Tray forming apparatus
阅读：684发布：2022-01-07
专利汇可以提供Tray forming apparatus专利检索，专利查询，专利分析的服务。并且Individual precut and prescored tray blanks are withdrawn from a stack and fed to an infeed station of the machine, each blank being provided with adhesive while enroute to said infeed station, and each blank being oriented with its end flaps in radially spaced relationship with respect to the axis of rotation of a mandrel which moves upwardly from beneath the blank to engage it at the infeed station and move it upwardly against four fixed corner tab deflecting plows. The inner radial edge of the blank is engaged by a pair of pivotally mounted fingers which fold the inner end flap through 90* as the blank is moved downstream by the mandrel. Projecting portions of these fingers also fold the corner tabs through 90* with respect to the inner end flap, while a pair of resilient leaf spring elements fold the outer end flap at substantially the same time. The outer pair of corner tabs are folded solely by the above mentioned fixed corner tab engaging plows. A pair of opposed side walls have upstream edges for supporting these flap folding elements, and also for supporting fixed side flap folding members so arranged as to engage the side flaps of the blank as it travels between the axially spaced side walls. The continuously moving mandrel then carries the folded tray through substantially 180* of its rotation to set the adhesive prior to arrival at a discharge station, where an eject cylinder carried within the mandrel, punches the tray downwardly so that it drops downwardly onto a take-away conveyor.，下面是Tray forming apparatus专利的具体信息内容。
1. Apparatus for forming trays from initially flat rectangular blanks which include side flaps and end flaps connected to a bottom panel on prescored fold lines, and corner tabs connected to the end flaps and separated from the side flaps by precut notches; said apparatus comprising a magazine for storing a plurality of such blanks, means for withdrawing the blanks individually and feeding each to an infeed station, means for applying adhesive to selected portions of the blank as it is fed to said infeed station, at least one blank engaging mandrel rotatably supported on an axis in the machine for arcuate movement through the infeed station to engage a blank oriented in a plane which is radially oriented with its side flaps radially disposed and its end flaps oriented in spaced radial relationship to one another, said blank being moved arcuately in a downstream direction by said mandrel, axially spaced walls located on either side of the path of movement of said mandrel and having upstream edges spaced downstream from said infeed station, inner and outer pairs of fixed plows mounted to said side walls and projecting beyond said upstream edges thereof to engage the corner tabs and deflect them as the blank is moved downstream beyond the infeed station, non-powered means for subsequently folding said end flaps and for further folding said corner tabs simultaneously therewith, and means for folding said side flaps so that said upstream edges of said side walls hold said side flaps against the corner tabs which are in turn held in place by said mandrel to set the adhesive while the tray is moved arcuately between said side walls.
2. The combination set forth in claim 1 further characterized by means for adjusting said side walls toward and away from one another to accommodate carton blanks of various size.
3. The combination set forth in claim 1 further characterized in that said non-powered means for folding said end flaps comprises at least one pair of pivotally mounted flap folding fingers each of which fingers has a portion for engaging said one end flap to fold it back through substantially 90* as the blank is moved downstream by said mandrel, said fingers being mounted for limited pivotal movement in response to passage of the mandrel and an associated blank, said pivotal movement of said pair of fingers occurring about a common axis spaced radially away from the fold line associated with said one end flap.
4. The combination set forth in claim 3 further characterized in that said flap folding fingers further include projecting plows for engaging said partially deflected corner tabs to urge them into a substantially 90* orientation with respect to their associated end flaps at the same time during which said fingers are folding said end flaps through substantially 90*, and a fixed guide rail of arcuate contour associated with each side wall for holding said end flap in its folded position as said mandrel moves the blank downstream.
5. The combination set forth in claim 3 further characterized in that each of said flap folding fingers is pivotally mounted to one of said corner tab deflecting plows, each of said fingers having a projecting portion which is normally oriented in the path of movement of said blank and which is engaged by the blank adjacent said fold line associated with said one end flap to cause said finger to pivot through a predetermined angular displacement as said mandrel and its associated blank move therepast.
6. The combination set forth in claim 5 further characterized that each of said fingers further includes a projecting plow portion located opposite said projecting portion with respect to said pivot axis, which plow portion is offset axially with respect to said end flap engaging projecting portion for engaging one of said partially deflected corner tabs to urge it into a substantially 90* orientation with respect to its associated end flap in response to said predetermined angular displacement of said finger.
7. The combination set forth in claim 6 further characterized by biasing means for urging each pivoted finger toward said normal position for returning said finger to said normal position following the passage of said mandrel and an associated blank.
8. The combination set forth in claim 1 further characterized in that said means for folding said end flaps comprises at least one pair of resilient leaf spring members mounted to one pair of corner tab deflecting plows, each of said leaf spring members having a projecting portion which is normally oriented in the path of movement of one of said end flaps to be engaged thereby and to fold said end flap through substantially 90* as the blank is moved downstream by said mandrel, said spring members being flexed slightly in response to passage of the mandrel and an associated blank so as to resiliently return to their normal orientations following the passage of said mandrel and blank.
9. The combination set forth in claim 8 further characterized in that said means for folding said end flaps further comprises a pair of pivotally mounted flap folding fingers carried by the other pair of corner tab deflecting plows for engaging the other one of said end flaps and folding it back through substantially 90* as the blank is moved downstream by said mandrel, said fingers being mounted for limited pivotal movement in response to passage of the mandrel and an associated blank about a common axis spaced radially away from the fold line associated with said one end flap.
10. The combination set forth in claim 9 further characterized in that said flap folding fingers further include projecting plows for engaging said partially deflected corner tabs to urge them into a substantially 90* orientation with respect to their associated end flap at the same time during which said fingers are folding said end flaps through substantially 90*, and a fixed guide rail of arcuate contour associated with each side wall for holding said end flap in its folded position as said mandrel moves the blank downstream.
11. The combination set forth in claim 9 further characterized in that each of said flap folding fingers has a projecting portion which is normalLy oriented in the path of movement of said blank and which is engaged by the blank adjacent said fold line associated with said one end flap to cause said finger to pivot through a predetermined angular displacement as said mandrel and its associated blank move therepast.
12. The combination set forth in claim 11 further characterized in that each of said fingers further includes a projecting plow portion located opposite said projecting portion with respect to said pivot axis, which plow portion is offset axially with respect to said end flap engaging projecting portion for engaging one of said partially deflected corner tab to urge it into a substantially 90* orientation with respect to its associated end flap in response to said predetermined angular displacement of said finger.
13. The combination set forth in claim 12 further characterized by biasing means for urging each pivoted finger toward said normal position for returning said finger to said normal position following the passage of said mandrel and an associated blank.
14. The combination set forth in claim 9 further characterized by means responsive to the arrival of said mandrel and folded blank at a discharge station which is angularly spaced from said infeed station for ejecting the folded blank, said means including an eject cylinder carried by said mandrel.
15. The combination set forth in claim 14 wherein said eject means further includes a limit switch so arranged as to be tripped by arrival of said mandrel at said discharge station, and a valve located in a line connecting said eject cylinder to a source of fluid under pressure, said valve being operable in response to tripping of limit switch to actuate said cylinder at said discharge station as aforesaid.
16. The combination set forth in claim 9 wherein said means for withdrawing the blanks from said magazine comprises a vacuum cup pivotally mounted for limited angular movement from and to a blank pick-up position in engagement with the endmost case, conveyor means for moving the blank from a delivery position to which said vacuum cup has moved the blank toward said infeed station.
17. The combination set forth in claim 16 wherein said conveyor means includes a continuously driven roller which engages a leading edge portion of the blank when said blank has been so withdrawn by said vacuum cup, vacuum control means for selectively connecting said cup to a source of vacuum when said cup reaches said pick-up position and for venting said cup to atmosphere when the blank has reached said delivery position.
18. The combination set forth in claim 17 wherein said conveyor means further includes a back-up roller for said continuously driven roller, a crank arm pivotally supported in co-axial relationship with said driven roller and defining a movable axis for said back-up roller, cam means for cyclically oscillating said crank arm between a blank engaging position wherein said back-up roller cooperates with said driven roller to feed a blank therebetween and an inactive position wherein said back-up roller moves in the downstream direction out of the path of movement of a blank being moved into said delivery position and onto said driven roller.
19. The combination set forth in claim 14 wherein said infeed station and said discharge station are oriented 180* apart with respect to the axis of rotation of said mandrel, said blank being conveyed generally horizontally into a horizontal position at said infeed station and said mandrel engaging said blank from below to move it upwardly through 180*, and said eject cylinder serving to eject the folded blank downwardly at said discharge station, and a take away conveyor for receiving the downwardly discharged folded blank or tray.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种高密度棉花播种机 | 2020-05-08 | 827 |
| 一种全自动菜地地垄锄地机器人 | 2020-05-11 | 700 |
| 一种易于施肥的农用犁地装置 | 2020-05-11 | 794 |
| 一种应用于土壤修复设备的出料装置 | 2020-05-11 | 300 |
| 土壤修复处理装置 | 2020-05-08 | 963 |
| 一种土壤修复系统 | 2020-05-08 | 197 |
| 一种多级肥料发酵罐 | 2020-05-08 | 586 |
| 一种智能免耕施肥播种机 | 2020-05-11 | 881 |
| 一种设有破土片的铧式犁主犁体 | 2020-05-13 | 533 |
| 一种三叶青种植用培土装置 | 2020-05-11 | 187 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
QQ群二维码
意见反馈
意见反馈