Shell product positioning clamp

Abstract

The utility model discloses a shell type product positioning clamp which comprises a three-jaw chuck, a support is fixed above the three-jaw chuck, a top disc-shaped piece is arranged at the top of the support, the middle of the top disc-shaped piece is hollowed out, three guide blocks are fixed on the top disc-shaped piece and distributed in the circumferential direction of the top disc-shaped piece, and the three guide blocks are arranged on the top disc-shaped piece. Each guide block is movably matched with a clamping block, the clamping blocks are connected with clamping jaws of the three-jaw chuck through levers, and the middles of the levers are hinged to the support. The sunken convex part of the lower half part of the shell type product is inserted into the hollow middle part of the top disc-shaped piece, a small bevel gear for driving the three-jaw chuck is adopted, the three clamping jaws respectively drive the clamping blocks connected with the three clamping jaws through levers, and the three clamping blocks are closed to clamp the lower half part of the shell type product, so that the positioning of the lower half part of the shell type product is realized; and conditions are provided for subsequent welding.

Description

TECHNICAL FIELD

[0001] The utility model relates to product welding field, concretely relates to product's positioning equipment. BACKGROUND

[0002] The lower half of the shell type product has a sunken convex part. After the lower half and the upper half are welded, the product is completely formed. During welding, the lower half has a sunken convex part, so positioning is difficult, which leads to the welding not being able to proceed smoothly. SUMMARY

[0003] The utility model solves the technical problem that the lower half of the shell type product has a sunken convex part, so positioning is difficult, which leads to the welding not being able to proceed smoothly.

[0004] To solve the above technical problem, the utility model provides the following technical scheme: a shell type product positioning clamp, including three jaw chucks, the top of three jaw chucks is fixed with a support, the top of the support is equipped with a top disc-shaped part, the middle part of the top disc-shaped part is hollow, three guide blocks are fixed on the top disc-shaped part, the three guide blocks are distributed along the circumference of the top disc-shaped part, each guide block movably cooperates with a clamping block, the clamping block is connected with the clamping jaw of the three jaw chuck through a lever, and the middle part of the lever is hinged to the support.

[0005] The sunken convex part of the lower half of the shell type product is inserted into the hollow middle part of the top disc-shaped part. Because of the existence of the support, the positioning clamp has enough space to accommodate the sunken convex part. The small conical gear of the three jaw chuck is driven, the disc-shaped gear of the three jaw chuck rotates, the plane screw on the top surface of the disc-shaped gear drives the three clamping jaws, the three clamping jaws are driven by the levers and connected with the clamping blocks, the three clamping blocks are closed, the lower half of the shell type product is clamped, and the positioning of the lower half of the shell type product is realized, so that conditions are provided for subsequent welding.

[0006] The bottom of the support is equipped with a bottom disc-shaped part, three pairs of vertical plates are arranged between the bottom disc-shaped part and the top disc-shaped part, the lever is arranged in each pair of vertical plates, the top disc-shaped part is provided with a perforation, the bottom of the clamping block passes through the perforation and is fixedly connected with an auxiliary block, and the top of the lever is connected with the auxiliary block. One pair of levers is arranged in each pair of vertical plates, the top of the one pair of levers is clamped on the two sides of the auxiliary block, and the bottom of the one pair of levers is clamped on the two sides of the clamping jaw.

[0007] The top of the lever is provided with a first slot, and the clamping block is movably connected with the lever through a first shaft matched in the first slot.

[0008] The bottom of the lever is provided with a second slot, and the clamping jaw of the three jaw chuck is movably connected with the lever through a second shaft matched in the second slot.

[0009] The small bevel gear of the three-jaw chuck is connected to a gear shaft, on which a spur gear is mounted. The spur gear meshes with a rack, which is fixedly connected to the piston rod of the cylinder. The gear shaft can be directly welded into the wrench hole of the three-jaw chuck, achieving a fixed connection between the small bevel gear and the gear shaft. The linear reciprocating motion of the cylinder piston rod drives the rack to reciprocate, which in turn drives the small bevel gear to rotate, displacing the jaws and thus opening and closing the three clamping blocks.

[0010] The three-jaw chuck has a support welded to its side wall. The support is U-shaped, and the spur gear is located inside the support. A guide groove is provided at the bottom of the support, and the rack engages with the guide groove. The cylinder is mounted on the outer side wall of the support, and the cylinder's piston rod is fixedly connected to the rack via a connecting block. The connecting block has a slot and a connecting hole. The rack engages in the slot and is locked with a fastening screw. The piston rod engages in the connecting hole and is locked with a fastening screw.

[0011] A horizontal plate is installed on the outer wall of the support, and the cylinder is fitted into a U-shaped component, which is connected to the horizontal plate. In this way, the cylinder is fixedly installed on the outer wall of the support.

[0012] This invention adds a bracket and clamping block to the general three-jaw chuck, which facilitates the clamping and positioning of the lower part of shell-type products and provides conditions for welding the products. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings:

[0014] Figure 1 A schematic diagram of a positioning fixture for shell-type products;

[0015] Figure 2 for Figure 1 Top view;

[0016] Figure 3 for Figure 1 The left view;

[0017] Figure 4 for Figure 1 AA section view;

[0018] Figure 5 for Figure 1 BB section view.

[0019] Explanation of symbols in the diagram:

[0020] 10. Three-jaw chuck; 11. Clamping jaws; 12. Gear shaft; 13. Spur gear;

[0021] 20. Bracket; 21. Top disc-shaped component; 210. Perforation; 22. Bottom disc-shaped component; 23. Vertical plate;

[0022] 30. Clamping block; 31. Guide block; 32. Auxiliary block;

[0023] 40. Lever; 41. First slot; 42. Second slot; 43. Hinge between the lever and the upright plate;

[0024] 50. Rack; 51. Cylinder; 52. Connecting block; 53. Horizontal plate; 54. U-shaped part;

[0025] 60. Support; 61. Guide groove. Detailed Implementation

[0026] Combination Figures 1 to 3 A positioning fixture for shell-type products includes a three-jaw chuck 10, a bracket 20 fixed above the three-jaw chuck, a top disc-shaped component 21 on the top of the bracket, a hollowed-out center of the top disc-shaped component, and three guide blocks 31 fixed on the top disc-shaped component. The three guide blocks are distributed around the circumference of the top disc-shaped component, and each guide block is movably fitted with a clamping block 30. The clamping block is connected to the jaws 11 of the three-jaw chuck through a lever 40, and the center of the lever is hinged to the bracket.

[0027] The bottom of the bracket 20 is provided with a bottom disc-shaped component 22, and three pairs of upright plates 23 are provided between the bottom disc-shaped component and the top disc-shaped component 21. The lever 40 is provided in each pair of upright plates. The top disc-shaped component is provided with a through hole 210. The bottom of the clamping block 30 passes through the through hole and is fixedly connected to the auxiliary block 32. The top of the lever 40 is connected to the auxiliary block.

[0028] A first strip hole 41 is opened at the top of the lever 40, and the clamping block 30 is movably connected to the lever through a first shaft that fits in the first strip hole.

[0029] A second slotted hole 42 is opened at the bottom of the lever 40, and the jaws 11 of the three-jaw chuck are movably connected to the lever by engaging with the second shaft in the second slotted hole.

[0030] Combination Figure 1 , Figure 3 , Figure 5 The small bevel gear of the three-jaw chuck 10 is connected to the gear shaft 12. The gear shaft is equipped with a spur gear 13, which meshes with the rack 50. The rack is fixedly connected to the piston rod of the cylinder 51.

[0031] A support 60 is welded to the side wall of the three-jaw chuck 10. The support is U-shaped. The spur gear 13 is located inside the support. A guide groove is provided at the bottom of the support. The rack 50 cooperates with the guide groove 61. The cylinder 51 is installed on the outer side wall of the support. The piston rod of the cylinder is fixedly connected to the rack through the connecting block 52.

[0032] A horizontal plate 53 is installed on the outer side wall of the support 60, and the cylinder 51 is fitted in the U-shaped part 54, which is connected to the horizontal plate.

[0033] The lower half of the shell product is inserted into the hollowed middle part of the top disc-shaped part 21, and the lowered convex part is accommodated in the sufficient space of the positioning clamp due to the existence of the support 20. The linear motion of the piston rod of the air cylinder 51 drives the rack 50 to move, the rack drives the spur gear 13 to rotate, the small bevel gear of the three-jaw chuck 10 rotates, the disc-shaped gear of the three-jaw chuck rotates, the flat screws on the top surface of the disc-shaped gear drive the three clamping jaws 11, the three clamping jaws respectively drive the clamping blocks 30 connected thereto through the levers 40, the three clamping blocks are closed, the lower half of the shell product is clamped, and the positioning of the lower half of the shell product is realized, thereby providing conditions for subsequent welding.

[0034] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, the specific embodiments and application scope can be changed according to the idea of the present application, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A shell product positioning fixture comprising a three-jaw chuck (10), characterized in that: A bracket (20) is fixed above the three-jaw chuck. A top disc-shaped part (21) is provided on the top of the bracket. The top disc-shaped part is hollowed out in the middle. Three guide blocks (31) are fixed on the top disc-shaped part. The three guide blocks are distributed around the top disc-shaped part. Each guide block is movably fitted with a clamping block (30). The clamping block is connected to the jaws (11) of the three-jaw chuck through a lever (40). The middle part of the lever is hinged to the bracket.

2. The housing product positioning fixture of claim 1, wherein: The bottom of the bracket (20) is provided with a bottom disc-shaped component (22), and three pairs of upright plates (23) are provided between the bottom disc-shaped component and the top disc-shaped component (21). The lever (40) is provided in each pair of upright plates. The top disc-shaped component is provided with a through hole (210). The bottom of the clamping block (30) passes through the through hole and is fixedly connected to the auxiliary block (32). The top of the lever (40) is connected to the auxiliary block.

3. The housing product positioning fixture of claim 1, wherein: A first slot (41) is opened at the top of the lever (40), and the clamping block (30) is movably connected to the lever by a first shaft fitting in the first slot.

4. The housing product positioning fixture of claim 1, wherein: A second slotted hole (42) is opened at the bottom of the lever (40), and the jaws (11) of the three-jaw chuck are movably connected to the lever by a second shaft in the second slotted hole.

5. The housing product positioning fixture of claim 1, wherein: The small bevel gear of the three-jaw chuck (10) is connected to the gear shaft (12), and the gear shaft is provided with a spur gear (13). The spur gear meshes with the rack (50), and the rack is fixedly connected to the piston rod of the cylinder (51).

6. The housing product positioning fixture of claim 5, wherein: A support (60) is welded to the side wall of the three-jaw chuck (10). The support is U-shaped. A spur gear (13) is located inside the support. A guide groove (61) is provided at the bottom of the support. A rack (50) is engaged with the guide groove. A cylinder (51) is installed on the outer side wall of the support. The piston rod of the cylinder is fixedly connected to the rack through a connecting block (52).

7. The housing product positioning fixture of claim 6, wherein: A horizontal plate (53) is installed on the outer wall of the support (60), and a cylinder (51) is fitted in a U-shaped part (54), which is connected to the horizontal plate.

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