Workpiece assembly clamp assembly

Abstract

The application relates to the technical field of clamping tools, and discloses a workpiece assembly clamping assembly, which comprises a workbench, U-shaped placing seats and side edge clamping assemblies are arranged on the two sides of the upper end of the workbench, and compression air cylinders for driving the rotation of top clamping seats are installed on the left and right sides of the workbench; end clamping assemblies are slidably connected to the guide rail seats on the side edges of the U-shaped placing seats, bottom heating assemblies are arranged on the U-shaped placing seats, and top heating assemblies are arranged on the top clamping seats; when the top clamping seat rotates towards the upper end of the workpiece, the end clamping assemblies are driven to clamp the end of the workpiece, meanwhile, the end clamping assemblies drive the bottom heating assemblies to tightly adhere to the lower end surface of the workpiece after the bottom heating assemblies are extended, and the top heating assemblies tightly adhere to the upper end surface of the workpiece after the top heating assemblies are extended out of the top clamping seat. The application realizes multi-directional limiting and anti-deviation of the workpiece, and the workpiece is stably clamped; the bottom heating assemblies and the top heating assemblies are synchronously and upwardly heated, and the constant-temperature curing effect is good.

Description

Technical Field

[0001] This invention relates to the field of clamping fixture technology, specifically to a workpiece assembly clamping component. Background Technology

[0002] After the workpiece is glued and assembled, it needs to be clamped, pressurized, and heated at a constant temperature for curing. Existing clamping fixtures have many defects: First, most adopt a single-sided independent clamping structure, which is prone to displacement and misalignment, resulting in poor clamping stability; Second, the clamping structure and heating structure are driven separately and independently, requiring step-by-step operation, which is cumbersome, inefficient, and prone to large manual adjustment errors; Third, conventional heating components are fixed, resulting in poor fit to the workpiece end face, affecting the heating of the workpiece and causing inconsistent glue curing quality; Fourth, the fixed heating components are directly exposed, and the high temperature of the heating components makes it easy to accidentally touch and burn during operation. Therefore, we have introduced a workpiece assembly clamping component. Summary of the Invention

[0003] The purpose of this invention is to provide a workpiece assembly and clamping assembly to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a workpiece assembly clamping assembly, including a worktable, wherein U-shaped placement seats and side clamping assemblies are provided on both sides of the upper end of the worktable, the U-shaped placement seats are used to place the workpiece, and the side clamping assemblies are used to clamp and fix the workpiece simultaneously from the front and rear. The workbench is equipped with clamping cylinders on its left and right sides for driving the top clamping seat to rotate. An end clamping assembly is slidably connected to the guide rail seat on the side of the U-shaped placement seat. A bottom heating assembly is provided on the U-shaped placement seat. One end of the end clamping assembly is connected to the bottom of the bottom heating assembly, and the other end of the end clamping assembly is connected to the top clamping seat. The top clamping seat is equipped with a top heating component; When the top clamping seat rotates towards the upper end of the workpiece, it drives the end clamping assembly to clamp the end of the workpiece. At the same time, the end clamping assembly drives the bottom heating assembly to extend and press against the lower end surface of the workpiece, and the top heating assembly extends out of the top clamping seat and presses against the upper end surface of the workpiece.

[0005] Preferably, a push-pressing cylinder and a limit slide are installed on the upper end of the worktable; The side clamping assembly includes a first rack and a second rack that slide symmetrically inside the limiting groove, and a gear installed centrally inside the limiting groove, the gear meshing between the first rack and the second rack. The rear end of the first rack is fixed with a first L-shaped side clamp, the front end of the second rack is fixed with a second L-shaped side clamp, and the push piston rod of the push cylinder output end is fixed to the front end of the second L-shaped side clamp.

[0006] Preferably, the end clamping assembly includes a slide block slidably connected to the guide rail seat, an end clamping plate fixed at the upper end of the slide block, and an L-shaped push-pull seat fixed at the inner end of the slide block.

[0007] Preferably, the bottom heating assembly includes a first limiting mounting plate that slides into a first limiting groove inside the U-shaped placement seat, a bottom heating block fixed at the upper end of the first limiting mounting plate, and a U-shaped seat fixed at the lower end of the first limiting mounting plate; The first slide rod inside the U-shaped seat extends through the first oblique groove at the end of the L-shaped push-pull seat.

[0008] Preferably, the bottom of the first limiting groove is provided with a first through groove in the center, and the bottom of the U-shaped placement seat is provided with a connecting groove that communicates with the guide rail seat. The U-shaped seat extends into the connecting groove through the first through groove.

[0009] Preferably, the outer end of the top clamping seat is provided with a rotating arm, the rotating arm is provided with a second oblique through groove, and the top of the end clamping plate is fixed with a second sliding rod, the two ends of the second sliding rod extending through the corresponding second oblique through groove.

[0010] Preferably, the top of the clamping cylinder is provided with a drive box, the rotating arm is rotatably connected to the drive box, and the clamping cylinder drives the top clamping seat to rotate forward and backward by driving the rotating arm.

[0011] Preferably, a rotating shaft is fixed on the rotating arm, with both ends of the rotating shaft extending through the drive box. A U-shaped drive seat located inside the drive box is fixed in the middle of the rotating shaft. After the pressing piston rod at the output end of the pressing cylinder extends into the drive box, a third slide rod is fixed thereon. Both ends of the third slide rod extend through the sliding groove on the side of the U-shaped drive seat.

[0012] Preferably, the top heating assembly includes a second limiting mounting plate slidably connected in a second limiting groove inside the top clamping seat, a top heating block fixed at the lower end of the second limiting mounting plate, a support plate provided at the upper end of the second limiting groove, an expansion bladder fixedly connected between the support plate and the second limiting mounting plate, a telescopic cylinder fixed at the top of the outer end of the top clamping seat, and a conductive tube communicating between the top of the telescopic cylinder and the expansion bladder. When the top clamping seat rotates towards the upper end of the workpiece until the bottom of the telescopic cylinder contacts the contact plate at the top of the end clamping plate, the telescopic cylinder is compressed and the internal air is squeezed into the expansion bladder through the guide pipe. After the expansion bladder expands, it pushes the second limiting mounting plate down until the top heating block extends out through the second through groove at the bottom of the second limiting groove and presses against the upper surface of the workpiece.

[0013] Preferably, a reset spring is fixed in the center of the second limiting groove, and the upper end of the reset spring is fixed to the lower end of the second limiting mounting plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention uses a pressing cylinder to link the rotating arm and the top clamping seat, which simultaneously drive the end clamping assembly to clamp the end of the workpiece. At the same time, the end clamping assembly drives the bottom heating block to fit against the lower end of the workpiece, achieving clamping and lower heating linkage with a single drive; combined with the side clamping assembly to clamp the workpiece, it achieves multi-directional limiting and anti-displacement of the workpiece, and stable clamping of the workpiece. The bottom heating element and the top heating element heat up and adhere to each other simultaneously, resulting in excellent constant temperature curing effect; The interconnected structure reduces manual adjustments, provides stable three-dimensional clamping and positioning, improves workpiece coating and curing efficiency and finished product quality, simplifies drive components, and reduces equipment operation and maintenance costs. After resetting, the top heating block retracts into the second limiting groove, and the bottom heating block falls back into the first limiting groove. During operation, personnel will not touch the top heating block and the bottom heating block, thus preventing burns and improving operational safety. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the workpiece clamping method according to the present invention; Figure 2 A schematic diagram of the structure of the U-shaped placement seat and side clamping assembly of the present invention; Figure 3 For the present invention Figure 2 A structural diagram from another perspective; Figure 4 This is a three-dimensional structural diagram of the side clamping assembly of the present invention; Figure 5 A schematic diagram showing the structure of the side clamping assembly, U-shaped placement seat, and end clamping assembly of the present invention; Figure 6 This is an exploded structural diagram showing the connection between the end clamping component and the bottom heating component of the present invention; Figure 7 This is a cross-sectional view of the assembly of the end clamping component, the bottom heating component, and the U-shaped placement seat of the present invention. Figure 8 For the present invention Figure 1 A structural diagram from another perspective; Figure 9 This is a schematic diagram of the structure of the top clamping seat and the side clamping assembly of the present invention for clamping the workpiece; Figure 10 This is a schematic diagram of the structure of the bottom heating component and the top heating component of the present invention in contact with the workpiece; Figure 11 A cross-sectional view of the top heating assembly and top clamping seat of the present invention; Figure 12This is a schematic diagram of the connection between the pressing piston rod and the rotating arm in this invention; Figure 13 This is a schematic diagram of the structure of the end clamping component, bottom heating component, and top heating block of the present invention for clamping a workpiece; Figure 14 This is a schematic diagram of the structure of the top clamping seat after it has been flipped upwards. Figure 15 For the present invention Figure 14 A cross-sectional structural diagram.

[0016] In the diagram: 1. Workbench; 2. Control switch; 3. Clamping cylinder; 4. Pushing cylinder; 5. Top clamping seat; 6. Workpiece; 7. Side clamping assembly; 701. Pushing piston rod; 702. Second L-shaped side clamping plate; 703. First rack; 704. Gear; 705. Second rack; 706. First L-shaped side clamping plate; 8. U-shaped placement seat; 9. Drive box; 10. Guide rail seat; 11. Limiting slide groove; 12. Bottom heating block; 13. End clamping plate; 14. Second slide rod; 15. Slide seat; 16. Contact plate; 17. 18. L-shaped push-pull seat; 19. First oblique through groove; 20. First limiting mounting plate; 21. U-shaped seat; 22. First sliding rod; 23. First limiting groove; 24. First through groove; 25. Top heating block; 26. Second oblique through groove; 27. Rotating arm; 28. Telescopic cylinder; 29. ​​Conductor pipe; 30. Support plate; 31. Second limiting groove; 32. Inflation bladder; 33. Second limiting mounting plate; 34. Return spring; 35. Rotating shaft; 36. U-shaped drive seat; 37. Third sliding rod; 38. Sliding through groove; 39. Pressing piston rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example: Please see Figures 1-15 The present invention provides a technical solution: A workpiece assembly clamping assembly includes a worktable 1. Both sides of the upper end of the worktable 1 are provided with U-shaped placement seats 8 and side clamping assemblies 7. The U-shaped placement seats 8 are used to place workpieces 6, and the side clamping assemblies 7 are used to clamp and fix workpieces 6 from the front and rear at the same time. The workbench 1 is equipped with clamping cylinders 3 on its left and right sides for driving the top clamping seat 5 to rotate. An end clamping assembly is slidably connected to the guide rail seat 10 on the side of the U-shaped placement seat 8. A bottom heating assembly is provided on the U-shaped placement seat 8. One end of the end clamping assembly is connected to the bottom of the bottom heating assembly, and the other end of the end clamping assembly is connected to the top clamping seat 5. The top clamping seat 5 is equipped with a top heating component; When the top clamping seat 5 rotates towards the upper end of the workpiece 6, it drives the end clamping assembly to clamp the end of the workpiece 6. At the same time, the end clamping assembly drives the bottom heating assembly to extend and closely adhere to the lower surface of the workpiece 6, and the top heating assembly extends out of the top clamping seat 5 and closely adheres to the upper surface of the workpiece 6.

[0019] The upper end of the workbench 1 is equipped with a push-tightening cylinder 4 and a limit slide groove 11; The side clamping assembly 7 includes a first rack 703 and a second rack 705 symmetrically sliding inside the limiting slide groove 11, and a gear 704 centrally installed inside the limiting slide groove 11, wherein the gear 704 meshes between the first rack 703 and the second rack 705. The rear end of the first rack 703 is fixed with a first L-shaped side clamp 706, the front end of the second rack 705 is fixed with a second L-shaped side clamp 702, and the push piston rod 701 of the output end of the push cylinder 4 is fixed to the front end of the second L-shaped side clamp 702.

[0020] The end clamping assembly includes a slide 15 that slides within the guide rail seat 10, an end clamp 13 fixed to the upper end of the slide 15, and an L-shaped push-pull seat 17 fixed to the inner end of the slide 15.

[0021] The bottom heating assembly includes a first limiting mounting plate 19 that slides into a first limiting groove 22 inside a U-shaped placement seat 8, a bottom heating block 12 fixed at the upper end of the first limiting mounting plate 19, and a U-shaped seat 20 fixed at the lower end of the first limiting mounting plate 19. The first slide bar 21 inside the U-shaped seat 20 extends through the first oblique through groove 18 at the end of the L-shaped push-pull seat 17.

[0022] The bottom of the first limiting groove 22 is provided with a first through groove 23 in the center, and the bottom of the U-shaped placement seat 8 is provided with a connecting groove that communicates with the guide rail seat 10. The U-shaped seat 20 extends into the connecting groove through the first through groove 23.

[0023] The top clamping seat 5 is provided with a rotating arm 26 on its outer end. The rotating arm 26 is provided with a second oblique through groove 25. The top of the end clamping plate 13 is fixed with a second sliding rod 14. The two ends of the second sliding rod 14 extend through the corresponding second oblique through groove 25.

[0024] The top of the clamping cylinder 3 is provided with a drive box 9, and the rotating arm 26 is rotatably connected to the drive box 9. The clamping cylinder 3 drives the top clamping seat 5 to rotate forward and backward by driving the rotating arm 26.

[0025] A rotating shaft 34 is fixed on the rotating arm 26. Both ends of the rotating shaft 34 extend through the drive box 9. A U-shaped drive seat 35 located inside the drive box 9 is fixed in the middle of the rotating shaft 34. The pressing piston rod 38 at the output end of the pressing cylinder 3 extends into the drive box 9 and is fixed with a third slide rod 36. Both ends of the third slide rod 36 extend through the sliding groove 37 on the side of the U-shaped drive seat 35.

[0026] The top heating assembly includes a second limiting mounting plate 32 that slides in the second limiting groove 30 inside the top clamping seat 5, a top heating block 24 fixed at the lower end of the second limiting mounting plate 32, a support plate 29 provided at the upper end of the second limiting groove 30, an expansion bag 31 fixedly connected between the support plate 29 and the second limiting mounting plate 32, a telescopic cylinder 27 fixed at the top of the outer end of the top clamping seat 5, and a guide tube 28 connecting the top of the telescopic cylinder 27 and the expansion bag 31. When the top clamping seat 5 rotates towards the upper end of the workpiece 6 until the bottom of the telescopic cylinder 27 contacts the contact plate 16 at the top of the end clamping plate 13, the telescopic cylinder 27 is compressed and squeezes the internal air into the expansion bag 31 through the guide pipe 28. After the expansion bag 31 expands, it pushes the second limiting mounting plate 32 down until the top heating block 24 extends out through the second through groove at the bottom of the second limiting groove 30 and presses against the upper surface of the workpiece 6.

[0027] A reset spring 33 is fixed in the center of the second limiting groove 30, and the upper end of the reset spring 33 is fixed to the lower end of the second limiting mounting plate 32.

[0028] The upper end of the workbench 1 is also equipped with a control switch 2, which is used to control the operation of the clamping cylinder 3, the pushing cylinder 4, the top heating block 24 and the bottom heating block 12.

[0029] Specifically, when using it: The workpiece assembly and clamping component relies on the worktable 1 as the overall supporting base. Control switch 2 centrally manages the actions of all pneumatic and heating components, enabling simultaneous multi-directional clamping of workpiece 6, synchronous bonding and heating of the upper and lower end faces, and constant-temperature, pressure-based curing of workpiece 6 after adhesive application. The entire operation is interconnected, requiring no step-by-step manual adjustment. The linkage logic of each structure operates in five complete stages: side pre-positioning clamping, top clamping linkage end clamping, synchronous bonding of upper and lower heating components, heating and pressure curing, and reset. Each structural label corresponds one-to-one with the original text. The detailed principle is as follows: I. Workpiece 6 Placement and Side Clamping Pre-positioning Stage: The operator first places the workpiece 6 to be glued and assembled inside the U-shaped placement seats 8 on both sides of the upper end of the workbench 1 to complete the basic support and positioning of the workpiece 6. The operator then activates the push cylinder 4 via control switch 2. The push piston rod 701 at the output end of the push cylinder 4 extends, causing the second L-shaped side clamp 702 to move backward synchronously.

[0030] The second L-shaped side clamp 702 is connected to the second rack 705 at its rear end. The second rack 705 slides backward inside the limiting slide groove 11 and drives the gear 704 meshing with the gear 704 in the middle of the limiting slide groove 11. The rotation of the gear 704 drives the first rack 703 on the other side to slide in the opposite direction. The first L-shaped side clamp 706 fixed at the rear end of the first rack 703 moves towards the workpiece 6 in sync.

[0031] Relying on the bidirectional synchronous transmission structure of gear 704, first rack 703, and second rack 705, first L-shaped side clamping plate 706 and second L-shaped side clamping plate 702 clamp the workpiece 6 synchronously from the front and rear sides of the workpiece 6, preventing the workpiece 6 from shifting back and forth during subsequent top pressing and heating, and realizing bidirectional synchronous clamping and positioning of the side clamping assembly 7.

[0032] 2. The clamping cylinder 3 drives the top clamping seat 5 to rotate, which in turn triggers the end clamping assembly to clamp the end of the workpiece 6: After the side clamping is completed, the clamping cylinders 3 on the left and right sides of the worktable 1 are activated by the control switch 2. The drive box 9 is installed above the clamping cylinder 3. The clamping piston rod 38 at the output end of the clamping cylinder 3 extends into the drive box 9, driving the end third slide rod 36 to extend. The third slide rod 36 passes through the sliding grooves 37 on both sides of the U-shaped drive seat 35, pushing the U-shaped drive seat 35 to deflect. The U-shaped drive seat 35 is fixed to the rotating shaft 34 as one piece. The two ends of the rotating shaft 34 pass through the drive box 9 and are rigidly connected to the outer rotating arm 26. Therefore, the deflection of the U-shaped drive seat 35 can drive the rotating shaft 34 and the rotating arm 26 to rotate synchronously, and finally drive the top clamping seat 5 at the end of the rotating arm 26 to flip and press down on the upper end of the workpiece 6.

[0033] The rotating arm 26 has a second oblique through groove 25, and the second sliding rod 14 fixed at the top of the end clamp 13 passes through the second oblique through groove 25; When the rotating arm 26 flips downward, the second inclined groove 25 presses the second slide bar 14, causing the end clamping plate 13 and the slide block 15 to slide horizontally along the guide rail seat 10 toward the end of the workpiece 6. The L-shaped push-pull seat 17 fixed inside the slide block 15 moves forward synchronously with the slide block 15, so that the end clamping assembly moves as a whole toward the end of the workpiece 6 until the end clamping plate 13 of the end clamping assembly clamps the end of the workpiece 6, locking the end of the workpiece 6 and preventing the workpiece 6 from shifting left and right.

[0034] 3. The end clamping assembly is linked with the bottom heating assembly to fit against the lower surface of workpiece 6: The L-shaped push-pull seat 17 has a first oblique through groove 18 at its end. The first limiting mounting plate 19 is assembled in the first limiting groove 22 inside the U-shaped placement seat 8. The lower end of the first limiting mounting plate 19 is fixed to the U-shaped seat 20. The first sliding rod 21 inside the U-shaped seat 20 passes through the first oblique through groove 18. When the L-shaped push-pull seat 17 slides inward with the slide seat 15, the first oblique through groove 18 squeezes the first slide rod 21 and pushes the U-shaped seat 20 upward; The upward movement of the U-shaped seat 20 will cause the first limiting mounting plate 19 to rise along the first limiting groove 22. The bottom heating block 12 fixed at the upper end of the first limiting mounting plate 19 will extend upward simultaneously and fit tightly against the lower surface of the workpiece 6, thus completing the action of the bottom heating component fitting against the lower surface of the workpiece 6. This action occurs synchronously with the end clamping plate 13 holding the end of the workpiece 6. The clamping and bottom heating bonding are linked by a single sliding structure, without the need for additional driving components.

[0035] IV. After the top clamping seat 5 is pressed down and makes contact, the top heating component automatically presses down and adheres to the upper end of the workpiece 6: The top clamping seat 5 is rotated downward until the bottom of the telescopic cylinder 27 and the contact plate 16 at the top of the end clamping plate 13 are pressed together. The telescopic cylinder 27 is compressed and the air inside the telescopic cylinder 27 is squeezed into the expansion bag 31 through the guide tube 28. The expansion bag 31 is installed between the support plate 29 and the second limiting mounting plate 32. The support plate 29 is fixed to the upper end of the second limiting groove 30 inside the top clamping seat 5. After the expansion bag 31 is inflated, it pushes the second limiting mounting plate 32 downward, and the return spring 33 is gradually compressed. The lower end of the second limiting mounting plate 32 is fixed with the top heating block 24. Under the action of the thrust, it slides down along the second limiting groove 30. The top heating block 24 extends down through the second through groove at the bottom of the second limiting groove 30 and presses against the upper surface of the workpiece 6. The second limiting groove 30 is centrally fitted with a reset spring 33. The upper end of the reset spring 33 is connected to the second limiting mounting plate 32. It is compressed and stores energy only when the expansion bladder 31 is inflated, providing elastic force for subsequent reset.

[0036] At this point, the bottom heating block 12 and the top heating block 24 are tightly attached to the upper and lower ends of the workpiece 6, respectively. The workpiece 6 is simultaneously and completely fixed by the side clamping assembly 7, the end clamping assembly, and the top clamping seat 5 in three dimensions, with no displacement space.

[0037] V. Constant temperature and pressure curing, cooling, and automatic reset process for each structure: Heating and pressurizing curing: The operator starts the top heating block 24 and the bottom heating block 12 by controlling switch 2 to heat up. The two are heated to 60°C at the same time. Under continuous clamping and pressing, the temperature and pressure are kept constant for 10 minutes to heat and promote the curing of the glue pre-coated on the surface of the workpiece 6, thereby improving the adhesive strength and curing efficiency.

[0038] Cooling stage: After holding the pressure for 10 minutes, turn off the heating power of the top heating block 24 and the bottom heating block 12 by controlling switch 2, keep the entire clamping structure still, and let the workpiece 6 cool naturally for 5 minutes until the glue is completely cured and formed.

[0039] Mechanism reset: After cooling is completed, control switch 2 controls the pressing piston rod 38 of pressing cylinder 3 to retract, pulls rotating arm 26 to rotate in the opposite direction to lift top clamping seat 5, telescopic cylinder 27 disengages from contact plate 16, air inside expansion bag 31 flows back to release pressure, reset spring 33 pushes up second limit mounting plate 32 to retract upward, top heating block 24 retracts into second limit groove 30; During the lifting process of the rotating arm 26, the second inclined through groove 25 pulls the second slide rod 14, the slide seat 15, the end clamp 13, and the L-shaped push-pull seat 17 slide outward along the guide rail seat 10 at the same time, the L-shaped push-pull seat 17 pulls the first slide rod 21, and the U-shaped seat 20 gradually moves down along the first through groove 23 until the first limiting mounting plate 19 falls down, and the bottom heating block 12 falls down with the first limiting mounting plate 19 and retracts into the first limiting groove 22; Then, by controlling switch 2, the piston rod 701 of the pushing cylinder 4 is retracted until the first L-shaped side clamp 706 and the second L-shaped side clamp 702 move away from the workpiece 6, thus releasing the side clamping. After all clamping and heating components are fully reset, the worker can remove the cured workpiece 6 from the U-shaped placement seat 8, completing the single assembly, clamping, heating and curing process.

[0040] Summary of the core logic of overall coordination: With the clamping cylinder 3 as the core linkage power source, the top clamping seat 5 can be rotated by a single set of cylinders to simultaneously trigger two sets of actions: end clamping and bottom heating and bonding. Relying on the pneumatic linkage structure of telescopic cylinder 27, guide tube 28, and expansion bag 31, the top heating block 24 is automatically ejected after the top clamping is in place. The side clamping assembly 7 adopts a gear and rack bidirectional synchronous clamping structure to ensure the front and rear positioning of the workpiece 6. The entire set of equipment relies on the control switch 2 to uniformly control the start and stop of the cylinder and the on and off of the heating module. The clamping, heating, and pressurizing actions are fully automatic and linked, without the need for multiple sets of independent drive components. The structure is simple and the clamping and positioning accuracy is high. With the upper and lower double-sided constant temperature heating, the workpiece coating, assembly, and curing quality and work efficiency are greatly improved.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece assembly and clamping assembly, comprising a worktable (1), characterized in that: The workbench (1) is provided with a U-shaped placement seat (8) and a side clamping assembly (7) on both sides of the upper end. The U-shaped placement seat (8) is used to place the workpiece (6), and the side clamping assembly (7) is used to clamp and fix the workpiece (6) from the front and back at the same time. The workbench (1) is equipped with clamping cylinders (3) on the left and right sides for driving the top clamping seat (5) to rotate. An end clamping assembly is slidably connected to the guide rail seat (10) on the side of the U-shaped placement seat (8). A bottom heating assembly is provided on the U-shaped placement seat (8). One end of the end clamping assembly is connected to the bottom of the bottom heating assembly, and the other end of the end clamping assembly is connected to the top clamping seat (5). The top clamping seat (5) is provided with a top heating assembly; When the top clamping seat (5) rotates toward the upper end of the workpiece (6), it drives the end clamping assembly to clamp the end of the workpiece (6). At the same time, the end clamping assembly drives the bottom heating assembly to extend and stick to the lower surface of the workpiece (6), and the top heating assembly extends out of the top clamping seat (5) and sticks to the upper surface of the workpiece (6).

2. The workpiece assembly and clamping assembly according to claim 1, characterized in that: The upper end of the workbench (1) is equipped with a push-tightening cylinder (4) and a limit slide groove (11). The side clamping assembly (7) includes a first rack (703) and a second rack (705) symmetrically sliding inside the limiting slide groove (11) and a gear (704) centrally installed inside the limiting slide groove (11), the gear (704) meshing between the first rack (703) and the second rack (705). The rear end of the first rack (703) is fixed with a first L-shaped side clamp (706), the front end of the second rack (705) is fixed with a second L-shaped side clamp (702), and the push piston rod (701) at the output end of the push cylinder (4) is fixed to the front end of the second L-shaped side clamp (702).

3. The workpiece assembly and clamping assembly according to claim 1, characterized in that: The end clamping assembly includes a slide (15) that slides within the guide rail (10), an end clamp (13) fixed to the upper end of the slide (15), and an L-shaped push-pull seat (17) fixed to the inner end of the slide (15).

4. The workpiece assembly and clamping assembly according to claim 3, characterized in that: The bottom heating assembly includes a first limiting mounting plate (19) that slides in the first limiting groove (22) inside the U-shaped placement seat (8), a bottom heating block (12) fixed at the upper end of the first limiting mounting plate (19), and a U-shaped seat (20) fixed at the lower end of the first limiting mounting plate (19). The first slide bar (21) inside the U-shaped seat (20) extends through the first oblique groove (18) at the end of the L-shaped push-pull seat (17).

5. A workpiece assembly and clamping assembly according to claim 4, characterized in that: The first limiting groove (22) has a first through groove (23) at the center of its bottom, and the bottom of the U-shaped placement seat (8) has a connecting groove that communicates with the guide rail seat (10). The U-shaped seat (20) extends into the connecting groove through the first through groove (23).

6. A workpiece assembly and clamping assembly according to claim 4, characterized in that: The top clamping seat (5) is provided with a rotating arm (26) on its outer end. The rotating arm (26) is provided with a second oblique through groove (25). The top of the end clamping plate (13) is fixed with a second slide rod (14). The two ends of the second slide rod (14) extend through the corresponding second oblique through groove (25).

7. A workpiece assembly and clamping assembly according to claim 6, characterized in that: The top of the clamping cylinder (3) is provided with a drive box (9), and the rotating arm (26) is rotatably connected to the drive box (9). The clamping cylinder (3) drives the top clamping seat (5) to rotate forward and backward by driving the rotating arm (26).

8. A workpiece assembly and clamping assembly according to claim 7, characterized in that: A rotating shaft (34) is fixed on the rotating arm (26). Both ends of the rotating shaft (34) extend through the drive box (9). A U-shaped drive seat (35) located inside the drive box (9) is fixed in the middle of the rotating shaft (34). The pressing piston rod (38) at the output end of the pressing cylinder (3) extends into the drive box (9) and is fixed with a third slide rod (36). Both ends of the third slide rod (36) extend through the sliding groove (37) on the side of the U-shaped drive seat (35).

9. A workpiece assembly and clamping assembly according to claim 3, characterized in that: The top heating assembly includes a second limiting mounting plate (32) that slides in the second limiting groove (30) inside the top clamping seat (5), a top heating block (24) fixed at the lower end of the second limiting mounting plate (32), a support plate (29) provided at the upper end of the second limiting groove (30), an expansion bag (31) fixedly connected between the support plate (29) and the second limiting mounting plate (32), a telescopic cylinder (27) fixed at the top of the outer end of the top clamping seat (5), and a conduit (28) connecting the top of the telescopic cylinder (27) and the expansion bag (31). When the top clamping seat (5) rotates to the upper end of the workpiece (6) until the bottom of the telescopic cylinder (27) contacts the contact plate (16) at the top of the end clamping plate (13), the telescopic cylinder (27) is compressed and squeezes the internal air into the expansion bladder (31) through the conduit (28). After the expansion bladder (31) expands, it pushes the second limiting mounting plate (32) down until the top heating block (24) extends out through the second through groove (23) at the bottom of the second limiting groove (30) and presses against the upper surface of the workpiece (6).

10. A workpiece assembly and clamping assembly according to claim 9, characterized in that: A reset spring (33) is fixed in the center inside the second limiting groove (30), and the upper end of the reset spring (33) is fixed to the lower end of the second limiting mounting plate (32).

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