Cambering attachment for truss assembly jig using canted roller press专利检索-弦切板木工，框架和细木工专利检索查询-专利查询网

Cambering attachment for truss assembly jig using canted roller press

阅读：508发布：2022-10-06

专利汇可以提供Cambering attachment for truss assembly jig using canted roller press专利检索，专利查询，专利分析的服务。并且Joist trusses, having generally parallel upper and lower chord members, are necessarily manufactured with a camber and preferably upon an assembly jig having a longitudinally disposed, movable, endless belt-like support surface for supporting precut wooden members arranged into the shape of a joist truss. Clamping devices, mounted upon the support surface, hold the precut members in place and spiked, metal gusset plates are placed at opposite sides of each joint of the truss. Two pairs of opposing, transversely-disposed rolls, arranged as roller presses, are located at one end of the support surface, with a first pair of rolls being positioned to receive both the support surface and the assembled truss thereon, so as to partially impale the gusset plate spikes into the members. The second pair of rolls are positioned beyond the support surface to tightly press the gusset plates against the sides of the truss as it passes through these rollers. The second pair of rolls are skewed, or angled from a normal transverse axial position to impart a predetermined camber into a truss as it moves through these rolls.，下面是Cambering attachment for truss assembly jig using canted roller press专利的具体信息内容。

权利要求

1. In a truss assembly jig for forming a timber truss having parallel upper and lower chords and diagonal struts between the chords, with the truss members, the chords and the struts being fastened together by spiked gusset plates, the combination including: a. a movable support surface whereon the truss members are placed in preassembled, longitudinal position to be thereafter moved to and from a discharge end of the support surface; b. a pair of first roll means near the discharge end of the support surface including a roll spaced above the surface a distance sufficient to partially impale the gusset plates into the wood truss members as the truss moves thereunder towards the discharge end of the surface; c. a pair of finishing roll means a short distance beyond the discharge end of the surface to receive a truss as it moves from the support surface, said finishing roll means having rolls spaced apart to press the gusset plates into and against the sides of the truss members to finish the truss; and the improvement wherein: the finishing roll means is skewed at an angle from the normal transverse axial alignment with respect to the longitudinal axis of the support surface whereby to impart a camber to a truss passing therethrough which is initiAlly placed in longitudinal alignment upon the support surface.

2. The apparatus defined in claim 1, wherein: the skew angle is from 2* to 10* .

3. The apparatus defined in claim 1, wherein: the said finishing roll means is carried in an adjustable frame means adapted to permit the same to be rotatably shifted to provide the aforesaid skew position.

4. The apparatus defined in claim 1, wherein: the said finishing roll means is carried in a yoke-like frame, the base of which is rotatably shiftable whereby to permit the rolls to be set at a selected skew angle.

5. The apparatus defined in claim 4, including: a second finishing roll means, with one finishing roll means being at one side of the apparatus, and the other finishing roll means being at the other side of the apparatus, whereby to permit the simultaneous formation of a pair of joist trusses on the apparatus.

6. The apparatus defined in claim 5, wherein: the second finishing roll means is longitudinally offset from the first to permit each roll means to extend to the center of the apparatus.

7. In the method of manufacturing a wooden joist truss, including longitudinal upper and lower wooden chords with wooden cross-bracing members, with a predetermined camber, which includes assembling wooden components, an assembly in the form of a joist truss with the upper and lower chord members in straight and parallel arrangement, placing toothed, metal gusset plates on each side of each joist, moving such assembly through a first roller press set at a normal angle to the longitudinal axis of the truss to partially embed the teeth of the gusset plates in the wooden members, and the improvement of passing the partially finished truss through a second roller press having the axis of its rolls set at a small angle to a normal position to the longitudinal axis of the truss passing through the first roller press to form a camber of predetermined dimensions in the truss.

说明书全文

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Cambering attachment for truss assembly jig using canted roller press

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