A self-centering adjustable balance block press-fit system

Abstract

The application discloses a self-centering-adjustable balance block press-fitting system and relates to the technical field of compressor equipment. The application comprises a workbench, a push-centering-clamping assembly arranged on the workbench, the push-centering-clamping assembly comprising a mounting bracket, a push-centering assembly and a movable clamping assembly, the push-centering assembly comprising a push-centering guide block slidingly arranged on the mounting bracket, a push-clamping head one arranged on the push-centering guide block, a compression spring arranged between the push-centering guide block and the mounting bracket, and an arc-shaped groove arranged on an end of the push-clamping head one; the movable clamping assembly comprises a piston cylinder one fixedly arranged on the push-centering guide block and a push-clamping head two arranged on a piston rod of the piston cylinder one; the push-clamping head one and the push-clamping head two can be opened and closed relative to the mounting bracket; and the arc-shaped groove on the push-clamping head one can be matched with a column on an upper side of a mounting portion of a workpiece. The application can make the shaft center of a balance block upper crank hole follow the shaft center of a workpiece upper crank and perform follow-up centering adjustment.

Description

Technical Field

[0001] This invention relates to the field of compressor equipment technology, and more specifically, to a self-centering adjustable balance block pressure distribution system. Background Technology

[0002] The basic working principle of a typical refrigerator compressor is that the motor drives the crankshaft to rotate. The rotation of the crankshaft causes the cranks on the crankshaft to drive the piston in a reciprocating linear motion within the cylinder via the connecting rod. It draws in low-temperature, low-pressure refrigerant gas through the suction pipe, compresses it through the piston driven by the motor, and then discharges high-temperature, high-pressure refrigerant gas through the exhaust pipe, providing power for the refrigeration cycle and thus realizing the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption).

[0003] As mentioned above, crankshaft rotation is a crucial and vital motion within the refrigerator compressor. Although lubricating oil is involved, wear still occurs. The smoothness of crankshaft rotation directly affects the compressor's energy consumption and lifespan. Therefore, the clearance between the crankshaft bore in the crankcase and the crankshaft is extremely important. Accurately measuring the size of this crankshaft bore in the assembly workshop to ensure a proper fit with the crankshaft and that the clearance is within the standard range is a significant challenge for the workshop and its employees. Even a slight error can lead to severe crankshaft wear or jamming, rendering the entire compressor unusable. The compressor is the "heart" of the refrigerator; its cessation signifies the refrigerator's loss of its "precious life." Summary of the Invention

[0004] To overcome the shortcomings of the above-mentioned technical problems, the present invention provides a balancing block press-fit system with adjustable centering, which enables the crankshaft hole on the balancing block to be adjusted according to the change of the crankshaft on the workpiece, thereby improving the assembly accuracy between the crankshaft and the crankshaft hole.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a self-centering adjustable balance block pressing system, including a worktable and a push-centering clamping assembly disposed on the worktable, which includes a mounting bracket, a push-positioning assembly, and a movable clamping assembly. The push-positioning assembly includes a push-guide block slidably disposed on the mounting bracket, a push-clamping head one disposed on the push-guide block, a compression spring disposed between the push-guide block and the mounting bracket, and an arc-shaped groove disposed at the end of the push-clamping head one. The movable clamping assembly includes a piston cylinder one fixed on the push-guide block, and a push-clamping head two disposed on the piston rod of the piston cylinder one. The push-clamping head one and the push-clamping head two can open and close relative to the mounting bracket. The arc-shaped groove on the push-clamping head one can be adapted to the column on the upper side of the mounting part of the workpiece.

[0006] This invention provides a self-centering adjustable balance block press-fit system. The specific implementation is as follows: First, the workpiece is fixed on the worktable; then, the balance block is clamped and fixed by activating the movable clamping assembly. Specifically, piston cylinder one is activated, and the piston rod on piston cylinder one drives the second push-align clamping head to move to one side of the first push-align clamping head, so that the first and second push-align clamping heads clamp and fix the balance block. Then, the first push-align clamping head on the push-align positioning assembly is moved to the lower side of the workpiece's mounting part. The arc-shaped groove on the first push-align clamping head can be adapted to the column on the upper side of the workpiece's mounting part. At this time, the crankshaft hole of the balance block clamped by the first and second push-align clamping heads and the axis of the crankshaft of the workpiece's mounting part can always remain the same under the action of the compression spring; that is, it enables the axis of the crankshaft hole on the balance block to be dynamically centered and adjusted according to the change of the axis of the crankshaft on the workpiece, thereby improving the assembly accuracy between the crankshaft and the crankshaft hole.

[0007] Preferably, the upper side of the second push-aligning clamping head is provided with a through groove on both sides, so that the upper side of the second push-aligning clamping head forms a clamping surface that can cooperate with the lower side of the second push-aligning clamping head. This facilitates the fixed clamping of the balance block before the push-aligning head is pushed.

[0008] Preferably, the system also includes a feeding mechanism, which comprises a horizontal adjustment component and a vertical adjustment component. The horizontal adjustment component includes a servo motor 1 mounted on the lower support plate and at least one sliding rail. The vertical adjustment component is slidably mounted on the sliding rail. The servo motor 1 is fixed on the lower support plate. A gear 1 is fixed on the output shaft of the servo motor 1. A gear 2 is rotatably mounted on the lower side of the lower support plate. A rack and belt is provided between gear 1 and gear 2. One side of the rack and belt is fixedly connected to the vertical adjustment component.

[0009] The horizontal adjustment component and the vertical adjustment component can be used to move the centering and clamping component horizontally and vertically. In a specific implementation, when the centering and clamping component needs to be moved horizontally for feeding, the first servo motor is started first. The start of the first servo motor will drive the first gear, the rack and belt and the second gear to rotate in sequence, thereby driving the centering and clamping component to move and adjust horizontally.

[0010] Preferably, the vertical adjustment assembly includes a lifting adjustment plate mounted on a movable slide rail. The lifting adjustment plate is fixedly connected to one side of a rack and pinion belt. A lifting slide rail mounting bracket is fixedly mounted on one side of the lifting adjustment plate. A vertical mounting slide rail is mounted on the lifting slide rail mounting bracket. A lead screw motor is mounted on the upper end of the lifting slide rail mounting bracket. A lead screw is fixed on the output shaft of the lead screw motor. The other end of the lead screw is rotatably connected to the lifting slide rail mounting bracket. A mounting bracket is slidably mounted on the mounting slide rail. The mounting bracket is threadedly connected to the lead screw.

[0011] In a specific implementation, when it is necessary to adjust the vertical movement of the centering and locating clamping assembly, the lead screw motor is started first. The lead screw motor can rotate in the forward or reverse direction, thereby driving the lead screw to rotate in the forward or reverse direction, which in turn drives the mounting bracket and the centering and locating clamping assembly mounted on the mounting bracket to move upward or downward for displacement adjustment.

[0012] Preferably, the workbench is equipped with a heating mechanism, which includes a support frame mounted on the workbench, a heater mounted on the support frame, and a heating head mounted on the heater.

[0013] The heating head on the heater can clamp the balance block that is fixedly clamped on the centering and stabilizing clamping assembly, so that the crankshaft hole of the balance block can be interference-fitted with the crankshaft on the workpiece.

[0014] As a preferred embodiment, it also includes a positioning fixture, with the lower support plate set on the upper side of the workbench; the positioning fixture includes several support fixture columns set on the workbench, a hydraulic cylinder is fixed on the lower side wall of the lower support plate, a movable fixture plate is provided on the hydraulic rod of the hydraulic cylinder, and several movable fixture columns are fixed on the lower side of the movable fixture plate.

[0015] The workpiece can be fixed on the worktable by using positioning fixtures. In a specific implementation, the workpiece is first placed on several supporting fixture columns, and then hydraulic cylinder one is activated. The hydraulic rod on hydraulic cylinder one drives the movable fixture plate and movable fixture columns to move towards the supporting fixture columns. Through the cooperation of the supporting fixture columns and the movable fixture columns, the workpiece can be clamped and fixed.

[0016] Preferably, it also includes a pressing mechanism, which includes a hydraulic cylinder two mounted on the worktable and a fixed push column mounted on the hydraulic rod of the hydraulic cylinder two.

[0017] When the balance block needs to be assembled onto the workpiece, the balance block must first be moved to the position between the workpiece and the push column. Then, the second hydraulic cylinder is activated. The second hydraulic cylinder drives the push column to move toward the workpiece side, thereby driving the balance block to be pressed onto the workpiece crankshaft.

[0018] Preferably, the device also includes a material handling mechanism, which includes a flipping mechanism and a clamping mechanism. The flipping mechanism includes a positioning flipping mechanism mounting bracket, a second servo motor, and a turntable. The positioning flipping mechanism mounting bracket is fixedly mounted on the workbench, the second servo motor is fixedly mounted on the positioning flipping mechanism mounting bracket, the output shaft of the second servo motor is fixedly mounted on the turntable, and the clamping mechanism is mounted on the turntable on the side away from the second servo motor.

[0019] When it is necessary to transfer the balance blocks sent out through the production line one by one, the second servo motor is started first. The rotation of the output shaft of the second servo motor will drive the turntable to rotate. The rotation of the turntable will drive the balance blocks held on the clamping mechanism to adjust the displacement from the picking position to the feeding position.

[0020] Preferably, the clamping mechanism includes a right-angle mounting plate set on the turntable, a T-shaped positioning plate on the right-angle mounting plate, a sliding bracket slidably provided between the T-shaped positioning plate and the right-angle mounting plate, a piston cylinder two fixedly mounted on the T-shaped positioning plate, the piston rod end of the piston cylinder two fixedly connected to the bottom wall of the opening groove on the sliding bracket, a positioning protrusion fixedly mounted on the right-angle mounting plate, and two sets of clamping blocks fixedly connected to the sliding bracket on both sides of the positioning protrusion.

[0021] When it is necessary to fix and clamp the balance block, first insert the positioning protrusion into the crankshaft hole through the flipping mechanism, and then start the second piston cylinder. The piston rod of the second piston cylinder will drive the sliding bracket to move, so that the clamping block moves toward the balance block, and achieves clamping and fixing of the balance block by cooperating with the positioning protrusion.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the precise centering and feeding of the balance block can be achieved by the push-aligning clamping head. In this invention, the axis of the crankshaft hole of the balance block can move and change with the axis of the arc-shaped groove through the horizontally movable push-aligning guide block and the compression spring. The axis of the arc-shaped groove is the same as the axis of the workpiece mounting column. Therefore, during the assembly of the balance block, the axis of the workpiece crankshaft and the axis of the balance block crankshaft hole always remain concentric, thereby effectively improving the installation quality of the balance block. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a self-centering adjustable balance block pressing system according to the present invention.

[0024] Figure 2 This is a schematic diagram of the feeding mechanism of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the centering and clamping assembly of the present invention.

[0026] Figure 4 This is a schematic diagram of the material handling mechanism of the present invention.

[0027] Figure 5 This is a schematic diagram of the pressing mechanism of the present invention.

[0028] Figure 6 This is a schematic diagram of the heater of the present invention.

[0029] In the picture: Workbench 100; Workpiece 101; Displacement bracket 102; Column 103; Upper support plate 104; Lower support plate 105; Balance block 106; Feeding tray 107; Heating mechanism 200; support frame 201; heater 202; heating head 203; Press-fitting mechanism 300; positioning fixture 310; supporting fixture plate 311; supporting fixture column 312; hydraulic cylinder one 313; moving fixture plate 314; moving fixture column 315; fixed-push press-fitting mechanism 320; hydraulic cylinder two 321; fixed-push column 322; Material handling mechanism 400; positioning and flipping mechanism mounting bracket 401; servo motor 2 402; turntable 403; right angle mounting plate 420; clamping mechanism mounting plate 421; T-shaped positioning plate 422; sliding bracket 423; piston cylinder 2 424; positioning protrusion 425; clamping block 426; open slide groove 427; Feeding mechanism 500; Lateral adjustment assembly 510; Servo motor 1 511; Moving slide rail 512; Gear 1 513; Bushing 514; Gear 2 515; Rack and pinion belt 516; Vertical adjustment assembly 520; lifting adjustment plate 521; moving slider 522; lifting slide rail mounting bracket 523; vertical mounting slide rail 524; lead screw motor 525; lead screw 526; lifting slider 527; Push-aligning centering clamping assembly 530; clamping assembly adjusting plate 531; horizontal mounting plate 532; push-aligning guide block 533; push-aligning clamping head one 534; compression spring 535; arc-shaped groove 536; adjusting bracket 537; piston cylinder one 538; push-aligning clamping head two 539; groove 540. Detailed Implementation

[0030] The technical solution of the invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: See Appendix Figure 1 To be continued Figure 6A self-centering adjustable balance block pressing system includes a worktable 100, a feeding mechanism, a heating mechanism 200, and a pressing mechanism 300 disposed on the worktable 100. The feeding mechanism includes a material handling mechanism 400 and a feeding mechanism 500. The pressing mechanism 300 includes a positioning fixture 310 for workpiece positioning and fixing, and a fixed-push pressing mechanism 320, which can push the balance block onto the fixed workpiece 101. The worktable 100 is provided with a displacement bracket 102 for mounting the feeding mechanism. The displacement bracket 102 includes four parallel columns 103 installed around the worktable 100. An upper support plate 104 is installed at the end of each column 103, and a lower support plate 105 is fixedly mounted on the lower side of the upper support plate 104. The feeding mechanism 500 includes a horizontal adjustment component 510, a vertical adjustment component 520 disposed on the horizontal adjustment component 510, and a push-alignment centering clamping component 530 for clamping and following centering adjustment of the balance block 106.

[0031] The centering and clamping assembly 530 includes a centering and positioning assembly and a movable clamping assembly mounted on the mounting bracket. The mounting bracket includes a clamping assembly adjusting plate 531 mounted on the vertical mounting slide rail and a horizontal mounting plate 532 mounted on the clamping assembly adjusting plate 531. The centering and positioning assembly and the movable clamping assembly can move relative to each other in a cross direction on the horizontal mounting plate. The centering and positioning assembly includes a centering guide block 533 slidably mounted on the horizontal mounting plate and a centering clamping head 534 mounted on the centering guide block 533. A compression spring 535 is provided between the centering guide block 533 and the clamping assembly adjusting plate 531. An arc-shaped groove 536 is provided at the end of the centering clamping head 534. The semi-circular groove 536 on the first push-align clamping head 534 can be adapted to the column on the upper side of the mounting part of the workpiece. The axis of the column of the mounting part is the same as the axis of the pressing part of the balance block. The movable clamping assembly includes an adjusting bracket 537 slidably disposed on the push-align guide block and a piston cylinder 538 fixedly disposed on the push-align guide block. The piston rod of the piston cylinder 538 is fixedly connected to the adjusting bracket 537. A second push-align clamping head 539 is provided on the lower side of the adjusting bracket 537. The lower surface of the first push-align clamping head 534 and the upper surface of the second push-align clamping head 539 can serve as the clamping surfaces of the upper and lower surfaces of the balance block. The precise clamping of the balance block can be achieved by the cooperation of the first push-align clamping head 534 and the second push-align clamping head 539. The upper side of the second push-aligning clamping head 539 is provided with a through groove 540 on both sides, so that the upper side of the second push-aligning clamping head 539 forms a clamping surface that can cooperate with the lower side of the first push-aligning clamping head 534. This facilitates the fixed clamping of the balance block before its fixed push.

[0032] The balance block can be precisely centered and fed in by using a push-aligning clamping head. The horizontally movable push-aligning guide block and compression spring work together to allow the axis of the balance block crankshaft hole to move and change with the axis of the arc-shaped groove. The axis of the arc-shaped groove is the same as the axis of the workpiece mounting column. Therefore, during the assembly of the balance block, the axis of the workpiece crankshaft and the axis of the balance block crankshaft hole always remain concentric, thus effectively improving the installation quality of the balance block.

[0033] The heating mechanism 200 includes a support frame 201 mounted on the worktable 100 and a heater 202 mounted on the support frame 201. The heater 202 is prior art and will not be described in detail here. It is heated by moving a balance block taken from the material handling mechanism 400 by the feeding mechanism 500 to a specific position on the upper part of the heating head 203 of the heater 202. The heating position and time must be strictly controlled; otherwise, the inner hole may be too large and fall off, or too small and subsequent pressing and fitting may fail.

[0034] The specific implementation method is as follows: First, the workpiece is fixed on the worktable 100; then, the balance block is clamped and fixed by activating the movable clamping assembly. That is, the piston cylinder 538 is activated first, and the piston rod on the piston cylinder 538 drives the push-align clamping head 539 to move to one side of the push-align clamping head 534, so that the push-align clamping head 534 and the push-align clamping head 539 clamp and fix the balance block; then, the push-align clamping head 534 on the push-align positioning assembly is moved to the lower side of the workpiece mounting part. The arc-shaped groove 536 on the push-align clamping head 534 can be adapted to the column on the upper side of the workpiece mounting part. At this time, the crankshaft hole of the balance block clamped by the push-align clamping head 534 and the push-align clamping head 539 can always remain the same as the axis of the crankshaft of the workpiece mounting part under the action of the compression spring, which facilitates the precise assembly of the balance block and the workpiece.

[0035] Example 2: See appendix Figure 1 To be continued Figure 6This embodiment further defines the feeding mechanism 400 based on Embodiment 1. It includes a worktable 100, a feeding mechanism, a heating mechanism 200, and a pressing mechanism 300 mounted on the worktable 100. The pressing mechanism 300 includes a positioning fixture 310 for workpiece positioning and fixing, and a fixed-push pressing mechanism 320, which can push the balance block onto the fixed workpiece 101. The worktable 100 is provided with a displacement bracket 102 for mounting the feeding mechanism. The displacement bracket 102 includes four parallel columns 103 mounted around the worktable 100. An upper support plate 104 is mounted at the end of each column 103, and a lower support plate 105 is fixedly mounted on the underside of the upper support plate 104. The feeding mechanism 500 includes a horizontal adjustment component 510, a vertical adjustment component 520 disposed on the horizontal adjustment component 510, and a push-alignment centering clamping component 530 for clamping and following centering adjustment of the balance block 106.

[0036] The horizontal adjustment component 510 includes a servo motor 511 and at least one sliding rail 512 disposed on the lower support plate 105. The vertical adjustment component 520 is slidably disposed on the sliding rail 512. The servo motor 511 is fixedly installed on the left side of the lower support plate 105. A gear 513 is fixedly disposed on the output shaft of the servo motor 511. A lower bushing 514 is located near the right end of the lower support plate 105. A gear 515 is rotatably disposed inside the bushing 514. A rack and pinion belt 516 is disposed between the gear 513 and the gear 515. One side of the rack and pinion belt 516 is fixedly connected to the vertical adjustment component 520.

[0037] The horizontal adjustment component 510 and the vertical adjustment component 520 enable the horizontal reciprocating movement and vertical up-and-down movement of the centering and aligning clamping component 530. In a specific implementation, when the centering and aligning clamping component 530 needs to be moved horizontally for feeding, the servo motor 511 is started first. The start of the servo motor 511 will sequentially drive the gear 513, the rack and belt 516, and the gear 515 to rotate, thereby driving the centering and aligning clamping component 530 to move and adjust horizontally.

[0038] The vertical adjustment assembly 520 includes a lifting adjustment plate 521 disposed on the movable slide rail, a movable slider 522 disposed between the movable slide rail and the lifting adjustment plate 521, a lifting slide rail mounting bracket 523 fixedly disposed on the left side of the lifting adjustment plate 521, a vertical mounting slide rail 524 disposed on the lifting slide rail mounting bracket 523, a lead screw motor 525 disposed on the upper end of the lifting slide rail mounting bracket 523, a lead screw 526 fixedly disposed on the output shaft of the lead screw motor 525, the other end of the lead screw 526 being rotatably connected to the lifting slide rail mounting bracket 523, a lifting slider 527 disposed on the vertical mounting slide rail 524, the lifting slider 527 being threadedly connected to the lead screw 526, a mounting bracket fixedly disposed on the side of the lifting slider 527 away from the vertical mounting slide rail 524, and a push-aligning and centering clamping assembly 530 disposed on the mounting bracket.

[0039] When it is necessary to adjust the vertical movement of the centering and locating clamping assembly 530, the lead screw motor 525 is started first. The lead screw motor 525 can rotate in the forward or reverse direction, thereby driving the lead screw to rotate in the forward or reverse direction, thereby driving the mounting bracket and the centering and locating clamping assembly 530 mounted on the mounting bracket to move upward or downward for displacement adjustment.

[0040] The centering and clamping assembly 530 includes a centering and positioning assembly and a movable clamping assembly mounted on the mounting bracket. The mounting bracket includes a clamping assembly adjusting plate 531 mounted on the vertical mounting slide rail and a horizontal mounting plate 532 mounted on the clamping assembly adjusting plate 531. The centering and positioning assembly and the movable clamping assembly can move relative to each other in a cross direction on the horizontal mounting plate. The centering and positioning assembly includes a centering guide block 533 slidably mounted on the horizontal mounting plate and a centering clamping head 534 mounted on the centering guide block 533. A compression spring 535 is provided between the centering guide block 533 and the clamping assembly adjusting plate 531. An arc-shaped groove 536 is provided at the end of the centering clamping head 534. The semi-circular groove 536 on the first push-align clamping head 534 can be adapted to the column on the upper side of the mounting part of the workpiece. The axis of the column of the mounting part is the same as the axis of the pressing part of the balance block. The movable clamping assembly includes an adjusting bracket 537 slidably disposed on the push-align guide block and a piston cylinder 538 fixedly disposed on the push-align guide block. The piston rod of the piston cylinder 538 is fixedly connected to the adjusting bracket 537. A second push-align clamping head 539 is provided on the lower side of the adjusting bracket 537. The lower surface of the first push-align clamping head 534 and the upper surface of the second push-align clamping head 539 can serve as the clamping surfaces of the upper and lower surfaces of the balance block. The precise clamping of the balance block can be achieved by the cooperation of the first push-align clamping head 534 and the second push-align clamping head 539. The upper side of the second push-aligning clamping head 539 is provided with a through groove 540 on both sides, so that the upper side of the second push-aligning clamping head 539 forms a clamping surface that can cooperate with the lower side of the first push-aligning clamping head 534. This facilitates the fixed clamping of the balance block before its fixed push.

[0041] The balance block can be precisely centered and fed in by using a push-aligning clamping head. The horizontally movable push-aligning guide block and compression spring work together to allow the axis of the balance block crankshaft hole to move and change with the axis of the arc-shaped groove. The axis of the arc-shaped groove is the same as the axis of the workpiece mounting column. Therefore, during the assembly of the balance block, the axis of the workpiece crankshaft and the axis of the balance block crankshaft hole always remain concentric, thus effectively improving the installation quality of the balance block.

[0042] The heating mechanism 200 includes a support frame 201 mounted on the worktable 100 and a heater 202 mounted on the support frame 201. The heater 202 is heated by a balance block retrieved from the material handling mechanism 400 by the feeding mechanism 500 and moved to a specific position on the upper side of the heating head 203. The heating position and time must be strictly controlled; otherwise, the inner hole may be too large and fall off, or too small and subsequent pressing may fail.

[0043] The specific implementation method is as follows: First, the workpiece is fixed on the worktable 100. When it is necessary to move the centering and locating clamping assembly 530 horizontally for feeding, the servo motor 511 is started first. The start of the servo motor 511 will sequentially drive the gear 513, the rack and belt 516 and the gear 515 to rotate, thereby driving the centering and locating clamping assembly 530 to move and adjust horizontally. When it is necessary to move the centering and locating clamping assembly 530 vertically, the lead screw motor 525 is started first. The lead screw motor 525 can rotate forward or backward, thereby driving the lead screw to rotate forward or backward, thereby driving the mounting bracket and the centering and locating clamping assembly 530 mounted on the mounting bracket to move upward or downward for displacement adjustment.

[0044] The feeding adjustment of the push-centering clamping assembly 530 can be achieved through the horizontal adjustment assembly 510 and the vertical adjustment assembly 520. The balance block is then clamped and fixed by activating the active clamping assembly. First, the piston cylinder 538 is activated, and the piston rod on the piston cylinder 538 drives the second push-align clamping head 539 to move to one side of the first push-align clamping head 534, so that the first push-align clamping head 534 and the second push-align clamping head 539 clamp and fix the balance block. Then, the push-align clamping head 534 on the push-align positioning assembly is moved to the lower side of the workpiece mounting part. The arc-shaped groove 536 on the push-align clamping head 534 can be adapted to the column on the upper side of the workpiece mounting part. At this time, the crankshaft hole of the balance block clamped by the first push-align clamping head 534 and the second push-align clamping head 539 can always remain the same as the axis of the crankshaft of the workpiece mounting part under the action of the compression spring, which facilitates the precise assembly of the balance block and the workpiece.

[0045] Example 3: See appendix Figure 1 To be continued Figure 6This embodiment further defines the material handling mechanism 400 based on embodiment 1 or 2. The material handling mechanism 400 includes a flipping mechanism and a clamping mechanism. The clamping mechanism is used to clamp and remove the balance block on the feeding tray 107, and the flipping mechanism can control the clamping mechanism to perform the operation. The flipping mechanism includes a positioning flipping mechanism mounting bracket 401, a second servo motor 402, and a turntable 403. The positioning flipping mechanism mounting bracket 401 is fixed on the worktable 100, the second servo motor 402 is fixed on the positioning flipping mechanism mounting bracket 401, the turntable 403 is fixed on the output shaft of the second servo motor 402, and the clamping mechanism is installed on the turntable 403 on the side away from the second servo motor 402. When it is necessary to transfer the balance blocks sent out by the production line one by one, the second servo motor 402 is started first. The rotation of the output shaft of the second servo motor 402 will drive the turntable 403 to rotate. The rotation of the turntable 403 will drive the balance blocks held on the clamping mechanism to adjust the displacement from the picking position to the feeding position.

[0046] The clamping mechanism includes a right-angle mounting plate 420, a clamping mechanism mounting plate 421, a T-shaped positioning plate 422, a sliding bracket 423, a piston cylinder 424, a positioning protrusion 425, and two sets of clamping blocks 426. The right-angle mounting plate 420 has a right-angle cross-section and is fixedly mounted on the turntable 403. The clamping mechanism mounting plate 421 is fixedly mounted on the right-angle mounting plate 420. The T-shaped positioning plate 422 is fixedly mounted on the upper surface of the clamping mechanism mounting plate 421 and is fixedly connected by two bolts. An open groove 427 is formed between the positioning plate 422 and the clamping mechanism mounting plate 421. A rectangular through hole is provided on the sliding bracket 423, allowing the sliding bracket 423 to slide on the clamping mechanism mounting plate 421. The T-shaped positioning plate 422 is embedded in the through hole. The two sides of the sliding bracket 423 are slidably installed in the open groove 427. The second piston cylinder 424 is fixed to the T-shaped positioning plate 422, and the piston rod of the second piston cylinder 424 is fixedly connected to the bottom wall of the through hole on the sliding bracket 423. Two sets of clamping blocks 406 are located between the positioning protrusions 425. When it is necessary to fix and clamp the balance weight, first insert the positioning protrusion 425 into the crankshaft hole through the flipping mechanism, and then start the second piston cylinder 424. The piston rod of the second piston cylinder 424 will drive the sliding bracket 423 to move, so that the clamping block 426 moves toward the balance weight, and achieves clamping and fixing of the balance weight by cooperating with the positioning protrusion 425.

[0047] Detailed Implementation: When it is necessary to transfer the balance blocks sent out by the assembly line one by one, first start the second servo motor 402. The rotation of the output shaft of the second servo motor 402 will drive the turntable 403 to rotate. The rotation of the turntable 403 will drive the clamping mechanism to move towards the balance block until the positioning protrusion 425 is inserted into the crankshaft hole on the balance block. Then start the second piston cylinder 424. The piston rod of the second piston cylinder 424 will drive the sliding bracket 423 to move, so that the clamping block 406 faces the flat surface. The balance block moves and, by cooperating with the positioning protrusion 425, clamps and fixes the balance block; then the servo motor 422 is started, and the rotation of the output shaft of the servo motor 422 will drive the turntable 403 to rotate in the opposite direction. The rotation of the turntable 423 will drive the clamping mechanism to move towards the feeding mechanism of the balance block; then the position is adjusted by the horizontal adjustment component 510 and the vertical adjustment component 520, so that the first push-up clamping head 534 and the second push-up clamping head 539 cooperate to accurately clamp the balance block.

[0048] Example 4: See appendix Figure 1 To be continued Figure 6 This embodiment further defines the pressing and dispensing mechanism 300 based on embodiment 3.

[0049] The press-fit mechanism 300 includes a positioning fixture 310 for limiting and fixing the workpiece and a fixed-push press-fit mechanism 320, which can push the balance block onto the workpiece mounting part that is limited and fixed.

[0050] The positioning fixture 310 includes a support fixture plate 311 mounted on the worktable 100, four support fixture columns 312 mounted on the support fixture plate 311, a hydraulic cylinder 313 fixed to the lower side wall of the upper support plate 104, a movable fixture plate 314 mounted on the hydraulic rod of the hydraulic cylinder 313, and four movable fixture columns 315 fixed to the lower side of the movable fixture plate 314. The workpiece can be limited and fixed by the cooperation of the support fixture columns 312 and the movable fixture columns 315. Specifically, by activating the hydraulic cylinder 313, the hydraulic rod of the hydraulic cylinder 313 drives the movable fixture plate 314 and the four movable fixture columns 315 mounted on the movable fixture plate 314 to move towards one side of the worktable 100, so that the support fixture columns 312 and the movable fixture columns 315 cooperate to achieve the limitation and fixation of the workpiece.

[0051] The fixed-push pressing mechanism 320 includes a second hydraulic cylinder 321 fixedly mounted on the lower side of the worktable 100. The hydraulic rod of the second hydraulic cylinder 321 is provided with a fixed-push column 322. When the heated balance block is sent between the workpiece mounting part and the fixed-push column, and the first push clamping head is interference-fitted with the upper part of the balance block mounting part, the second hydraulic cylinder 321 is activated. The hydraulic rod of the second hydraulic cylinder 321 drives the fixed-push column 322 to press the balance block into the workpiece mounting part. The two are fixed by interference fit. It is required that the hole of the heated workpiece mounting part and the crankshaft position of the balance block are completely aligned. The pressing depth and angle during the pressing process need to be strictly controlled to meet the process requirements.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

Claims

1. A self-centering adjustable balance block pressing system, comprising a worktable and a centering and clamping assembly disposed on the worktable, the assembly including a mounting bracket, a centering and clamping assembly, and a movable clamping assembly, characterized in that, The pushing and positioning assembly includes a pushing guide block slidably mounted on the mounting bracket, a first pushing clamping head mounted on the pushing guide block, a compression spring between the pushing guide block and the mounting bracket, and an arc-shaped groove at the end of the first pushing clamping head. The arc-shaped groove on the first pushing clamping head can be adapted to the column on the upper side of the mounting part of the workpiece. Under the action of the compression spring, the axis of the column of the mounting part and the axis of the pressing part of the balance block always remain the same. The movable clamping assembly includes a first piston cylinder fixed on the pushing guide block, a second pushing clamping head mounted on the piston rod of the first piston cylinder, and the first pushing clamping head and the second pushing clamping head can be opened and closed relative to the mounting bracket. The upper side of the second push-aligning clamping head is provided with a through groove on both sides, so that the upper side of the second push-aligning clamping head forms a clamping surface that can cooperate with the lower side of the push-aligning clamping head.

2. The self-centering adjustable balance block pressing system according to claim 1, characterized in that, It also includes a feeding mechanism, which includes a horizontal adjustment component and a vertical adjustment component. The horizontal adjustment component includes a lower support plate, a servo motor 1 mounted on the lower support plate, and at least one sliding rail. The vertical adjustment component is slidably mounted on the sliding rail. The servo motor 1 is fixed on the lower support plate. A gear 1 is fixed on the output shaft of the servo motor 1. A gear 2 is rotatably mounted on the lower side of the lower support plate. A rack and belt is provided between gear 1 and gear 2. One side of the rack and belt is fixedly connected to the vertical adjustment component.

3. The self-centering adjustable balance block pressing system according to claim 2, characterized in that, The vertical adjustment assembly includes a lifting adjustment plate mounted on a movable slide rail. The lifting adjustment plate is fixedly connected to one side of a rack and pinion belt. A lifting slide rail mounting bracket is fixedly mounted on one side of the lifting adjustment plate. A vertical mounting slide rail is mounted on the lifting slide rail mounting bracket. A lead screw motor is mounted on the upper end of the lifting slide rail mounting bracket. A lead screw is fixed on the output shaft of the lead screw motor. The other end of the lead screw is rotatably connected to the lifting slide rail mounting bracket. A mounting bracket is slidably mounted on the mounting slide rail. The mounting bracket is threadedly connected to the lead screw. A movable slider is provided between the movable slide rail and the lifting group adjustment plate.

4. A self-centering adjustable counterweight press-fit system according to any one of claims 1-3, characterized in that, The workbench is equipped with a heating mechanism, which includes a support frame mounted on the workbench, a heater mounted on the support frame, and a heating head mounted on the heater.

5. A self-centering adjustable pad press fit system according to claim 4, wherein, It also includes positioning fixtures, with the lower support plate set on the upper side of the workbench; the positioning fixtures include several support fixture columns set on the workbench, a hydraulic cylinder is fixed on the lower side wall of the lower support plate, a movable fixture plate is set on the hydraulic rod of the hydraulic cylinder, and several movable fixture columns are fixed on the lower side of the movable fixture plate.

6. A self-centering adjustable pad press fit system according to claim 5, wherein, It also includes a push-and-press mechanism, which includes a hydraulic cylinder two mounted on the worktable and a fixed push column mounted on the hydraulic rod of the hydraulic cylinder two.

7. A self-centering adjustable counterweight press-fit system according to claim 4 or 5, characterized in that, It also includes a material handling mechanism, which includes a flipping mechanism and a clamping mechanism; the flipping mechanism includes a positioning flipping mechanism mounting bracket, a second servo motor and a turntable; the positioning flipping mechanism mounting bracket is fixedly set on the workbench, the second servo motor is fixedly set on the positioning flipping mechanism mounting bracket, the output shaft of the second servo motor is fixedly set on the turntable, and the clamping mechanism is installed on the turntable on the side away from the second servo motor.

8. The self-centering adjustable balance block pressing system according to claim 7, characterized in that, The clamping mechanism includes a right-angle mounting plate set on the turntable, a T-shaped positioning plate on the right-angle mounting plate, a sliding bracket slidably provided between the T-shaped positioning plate and the right-angle mounting plate, a piston cylinder two fixedly mounted on the T-shaped positioning plate, the piston rod end of the piston cylinder two fixedly connected to the bottom wall of the opening groove on the sliding bracket, a positioning protrusion fixedly mounted on the right-angle mounting plate, and two sets of clamping blocks fixedly connected to the sliding bracket on both sides of the positioning protrusion.

Images