Steering wheel counterweight steel bar crimping tool

By designing the steering wheel counterweight steel bar crimping tooling, the problem of inconsistent installation of the steering wheel counterweight steel ring is solved, the pressing accuracy and efficiency are improved, the product quality and safety are ensured, and it is suitable for mass production.

CN120362918APending Publication Date: 2025-07-25NANJING YUNHAI LIGHT METALS PRECISION MFG
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Patent Information

Application Number
CN202510811681.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-18
Publication Date
2025-07-25

AI Technical Summary

Technical Problem

In the prior art, the installation position accuracy and pressing force of the steering wheel counterweight steel ring are inconsistent, resulting in the insolid installation of the steel ring, affecting driving comfort and safety, and the manual operation efficiency is low, which cannot meet the needs of large-scale automated production.

Method used

A steering wheel counterweight steel bar crimping tool is designed, including jaws, pre-pressure blocks, cylinders, maintenance devices, cleaning devices and auxiliary devices. By detecting the wear of the pre-pressure block, removing metal debris and vibration cleaning, the pressing accuracy and efficiency are ensured.

Benefits of technology

It improves the dimensional stability and usage performance of the steering wheel rim, solves the problems of difficulty in judging the wear of pre-pressure blocks and incomplete cleaning of metal debris, and achieves efficient and automated production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a steering wheel counterweight steel bar crimping tool, and relates to the technical field of steering wheel counterweight steel bar crimping tools, the steering wheel counterweight steel bar crimping tool comprises a tool main body, a clamping jaw is fixed on the upper surface of the inner wall of the tool main body, and a first cylinder is fixed on the inner wall of the tool main body. According to the steering wheel counterweight steel bar crimping tool, after a press fitting tool completes operation, a worker manually pokes an insulating handle to check and maintain a pre-pressing block, and when it is detected that the pre-pressing block is seriously abraded, the pre-pressing block is matched with a sliding plate, an inclined plane block and a pressure sensor to send signals to a controller, so that the controller controls an alarm to give an alarm; and the first air cylinder is locked, so that the situation that operation continues under the condition that the pre-pressing block is seriously abraded, consequently, the size of a product produced in a press-fitting mode has a large error is avoided, and the problem that whether the pre-pressing block needs to be replaced or not cannot be judged is solved.
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Description

Technical Field

[0001] The present invention relates to the technical field of steering wheel counterweight steel bar crimping tooling, and specifically relates to a steering wheel counterweight steel bar crimping tooling. Background Art

[0002] In the automotive manufacturing industry, the performance and quality of the steering wheel are crucial for the driving experience and safety. The installation of the steering wheel counterweight steel ring is a key link in the steering wheel production process. When manually installing the counterweight steel ring onto the steering wheel, it is difficult to ensure the consistency of the position accuracy and crimping force for each installation, which may lead to the insecure installation of the steel ring, resulting in shaking or abnormal noises during vehicle driving, affecting driving comfort, and even posing potential safety hazards. At the same time, manual operation has low efficiency and cannot meet the requirements of large-scale automated production.

[0003] However, in the existing steering wheel counterweight steel ring crimping process, the steering wheel product rim is usually directly placed on the plane of the crimping tooling. Since the dimensions of the die-cast steering wheel rim are unstable and it is unknown which position contacts the plane first, the rim dimensions are likely to exceed the tolerance. To improve the existing counterweight steel ring crimping process, improve production efficiency, improve the dimensional stability of the rim after crimping, ensure product quality, and facilitate mass production, the present invention proposes a steering wheel counterweight steel bar crimping tooling. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a steering wheel counterweight steel bar crimping tooling, which solves the problems raised in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A steering wheel counterweight steel bar crimping tooling includes a tooling main body. A clamping jaw is fixed on the upper surface of the inner wall of the tooling main body. A first cylinder is fixed on the inner wall of the tooling main body. A pre-pressing block is fixed on the inner wall of the tooling main body. A maintenance device for detecting the wear degree of the pre-pressing block is arranged outside the pre-pressing block. A cleaning device for conveniently removing debris such as metal chips on the pre-pressing block is arranged inside the maintenance device. An auxiliary device for further removing debris is arranged inside the maintenance device to further remove the debris.

[0006] Among them, the maintenance device includes a box body, a sliding plate, an electromagnetic rod, a support plate, a connecting block, an inclined plane block, a pressure sensor, a controller, an alarm, a second cylinder, and a baffle. The box body is fixedly connected to the inner wall of the tooling main body. The sliding plate is slidably connected to the inner wall of the box body. The outer wall of the electromagnetic rod is attached to the upper surface of the pre-pressing block.

[0007] According to the above technical solution, the electromagnetic rod penetrates the upper surface of the box body, and the penetration part is in sliding connection. The electromagnetic rod penetrates the sliding plate, and the penetration part is in sliding connection. The support plate is fixedly connected to the bottom end of the electromagnetic rod, and the support plate supports the sliding plate.

[0008] According to the above technical solution, the electromagnetic rod penetrates the connecting block, and the penetration part is in sliding connection. An insulating handle is fixed to the side wall of the connecting block away from the electromagnetic rod. The inclined plane block is slidably connected to the bottom surface of the inner wall of the box body. When the sliding plate slides downward, it pushes the inclined plane block to slide outward.

[0009] According to the above technical solution, the pressure sensor is fixedly connected to the inner wall of the tooling main body. The input end of the pressure sensor is in contact with the side wall of the inclined plane block away from the box body. The controller is fixedly connected to the front of the pressure sensor. The pressure sensor is electrically connected to the controller. When the pressure sensor detects pressure, it sends an electrical signal to the controller.

[0010] According to the above technical solution, the alarm is fixedly connected to the front of the pressure sensor. The controller is electrically connected to the alarm. The second cylinder is fixedly connected to the inner wall of the tooling main body. The controller is electrically connected to the second cylinder. The piston of the second cylinder is connected to a piston rod. The baffle is fixedly connected to the end of the piston rod away from the second cylinder. When the second cylinder is started, it pushes the baffle to move upward through the piston rod.

[0011] According to the above technical solution, the cleaning device includes a compression spring, a conductive plate, a support spring, a storage battery and a collection box. The compression spring is fixedly connected to the bottom surface of the inner wall of the box body. The conductive plate is fixedly connected to the end of the compression spring away from the bottom surface of the inner wall of the box body. The compression spring is always in a compressed state.

[0012] According to the above technical solution, the support spring is fixedly connected to the bottom surface of the inner wall of the box body. The storage battery is fixedly connected to the end of the support spring away from the bottom surface of the inner wall of the box body. The output end of the storage battery is fixedly connected to the bottom surface of the conductive plate. The collection box is fixedly connected to the side wall of the box body. The storage battery supplies power to the sliding plate through the conductive plate.

[0013] According to the above technical solution, the auxiliary device includes a return spring, a connecting plate, a push block, a pressing block and a knocking rod. The return spring is fixedly connected to the side wall of the electromagnetic rod. The connecting plate is fixedly connected to the end of the return spring away from the electromagnetic rod.

[0014] According to the above technical solution, the push block is fixedly connected to the side of the connecting plate away from the return spring. The pressing block is fixedly connected to the inner wall of the box body. The knocking rod is fixedly connected to the side of the connecting plate close to the return spring. The pressing block pushes the push block to move, compressing the return spring.

[0015] The present invention provides a crimping tool for a steering wheel counterweight steel bar. It has the following beneficial effects:

[0016] (1) The present invention is provided with a maintenance device. After the crimping tool completes the operation, the insulating handle is manually toggled by the staff to check and maintain the pre-pressure block. When it is detected that the pre-pressure block is severely worn, in cooperation with the sliding plate, the inclined block and the pressure sensor, a signal is sent to the controller, so that the controller controls the alarm to give an alarm, and the first cylinder is locked to prevent continuous operation in the case of severe wear of the pre-pressure block, which may lead to large errors in the dimensions of the products produced by crimping, thus solving the problem of being unable to judge whether the pre-pressure block needs to be replaced.

[0017] (2) The present invention is provided with a cleaning device. While the maintenance device checks the wear degree of the pre-pressure block, the conductive plate is electrified by the storage battery, and in cooperation with the conductive sliding plate, the extrusion spring and the support spring, the electromagnetic rod is electrified, so that the electromagnetic rod generates a magnetic field to adsorb the metal debris on the pre-pressure block, preventing the electromagnetic rod from pressing over the metal debris when checking the pre-pressure block, causing scratches on the pre-pressure block, which may affect the internal stress of the pre-pressure block, thus solving the problem that the metal debris that may exist on the pre-pressure block is likely to cause defects such as scratches on the pre-pressure block, affecting the crimping work.

[0018] (3) The present invention is provided with an auxiliary device. While cleaning the pre-pressure block, through the extrusion of the extrusion block on the push block, in cooperation with the reset spring, the connecting plate drives the knocking rod to repeatedly knock on the inner wall of the box body, causing the box body to vibrate. Also, the side wall of the box body is attached to the pre-pressure block. When the box body vibrates, it drives the pre-pressure block to vibrate, causing the debris in the groove of the pre-pressure block to shake and bounce up, preventing the debris from getting stuck in the groove of the pre-pressure block and being too far away from the electromagnetic rod to be adsorbed on the outer wall of the electromagnetic rod, thus solving the problem that due to its own limitations, the magnetic field range generated by the electromagnetic rod is small and cannot clean the inside of the groove of the pre-pressure block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the maintenance device of the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the box body of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the auxiliary device of the present invention;

[0023] Figure 5 of the present invention Figure 4 schematic diagram of the partial enlarged structure of area A;

[0024] Figure 6 This is a schematic structural diagram of the cleaning device of the present invention.

[0025] In the figure: 1, tooling main body; 2, clamping jaw; 3, first cylinder; 4, pre-pressure block; 51, box body; 52, sliding plate; 53, electromagnetic rod; 54, support plate; 55, connecting block; 56, inclined plane block; 57, pressure sensor; 58, controller; 59, alarm; 510, second cylinder; 511, baffle; 61, extrusion spring; 62, conductive plate; 63, support spring; 64, storage battery; 65, collection box; 71, reset spring; 72, connecting plate; 73, pushing block; 74, extrusion block; 75, knocking rod. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-6 , an embodiment of the present invention is: A steering wheel counterweight steel strip crimping tooling includes a tooling main body 1. The upper surface of the inner wall of the tooling main body 1 is fixed with a clamping jaw 2. The inner wall of the tooling main body 1 is fixed with a first cylinder 3. The inner wall of the tooling main body 1 is fixed with a pre-pressure block 4. The pre-pressure block 4 is made of urethane rubber. Two pre-pressure blocks 4 are added at the most stable positions of the dimensions of the product rim 3 and 9 in the crimping tooling. When crimping, the pre-pressure block 4 first compresses the most stable positions of the 3 and 9 spokes, and then crimping production is carried out. The pre-pressure block 4 made of urethane rubber can improve the existing counterweight steel ring crimping process, improve production efficiency, improve the dimensional stability of the rim after crimping, ensure product quality, facilitate mass production, solve the problem that the rim is prone to deformation during the crimping process, and significantly improve the dimensional stability and service performance of the steering wheel. A maintenance device for detecting the wear degree of the pre-pressure block 4 is arranged outside the pre-pressure block 4.

[0028] Among them, the maintenance device includes a box body 51, a sliding plate 52, an electromagnetic rod 53, a support plate 54, a connecting block 55, an inclined plane block 56, a pressure sensor 57, a controller 58, an alarm 59, a second cylinder 510 and a baffle 511. The box body 51 is fixedly connected to the inner wall of the tooling main body 1. The sliding plate 52 is slidably connected to the inner wall of the box body 51. The sliding plate 52 is made of a conductive material. The outer wall of the electromagnetic rod 53 is attached to the upper surface of the preloading block 4. The electromagnetic rod 53 can slide along the upper surface of the preloading block 4. When the electromagnetic rod 53 slides to a place where the preloading block 4 is worn more seriously, the electromagnetic rod 53 slides downward under the action of gravity. The electromagnetic rod 53 penetrates the upper surface of the box body 51, and the penetration part is slidably connected. The electromagnetic rod 53 penetrates the sliding plate 52, and the penetration part is slidably connected. The support plate 54 is fixedly connected to the bottom end of the electromagnetic rod 53. The support plate 54 is made of an insulating material. When the electromagnetic rod 53 slides downward, it drives the support plate 54 to move downward. The sliding plate 52 no longer receives the supporting force of the support plate 54 and also slides downward following the support plate 54. The electromagnetic rod 53 penetrates the connecting block 55, and the penetration part is slidably connected. An insulating handle is fixed to the side wall of the connecting block 55 away from the electromagnetic rod 53. After the production is completed and the press-fitting tooling stops, the insulating handle is toggled to drive the connecting block 55 to slide. When the connecting block 55 slides, it drives the electromagnetic rod 53 to slide. The inclined plane block 56 is slidably connected to the bottom surface of the inner wall of the box body 51. When the sliding plate 52 slides downward, its side is slidably connected to the inclined plane of the inclined plane block 56, pushing the inclined plane block 56 to slide away from the box body 51. The pressure sensor 57 is fixedly connected to the inner wall of the tooling main body 1. The input end of the pressure sensor 57 is attached to the side wall of the inclined plane block 56 away from the box body 51. When the inclined plane block 56 slides towards the pressure sensor 57, the pressure sensor 57 detects the pressure. The controller 58 is fixedly connected to the front of the pressure sensor 57. The pressure sensor 57 is electrically connected to the controller 58. After the pressure sensor 57 detects the pressure, it sends a signal to the controller 58. The alarm 59 is fixedly connected to the front of the pressure sensor 57. The controller 58 is electrically connected to the alarm 59. The second cylinder 510 is fixedly connected to the inner wall of the tooling main body 1. The controller 58 is electrically connected to the second cylinder 510. After the controller 58 receives the signal, it controls the second cylinder 510 to start and controls the alarm 59 to sound an alarm. The piston of the second cylinder 510 is connected to a piston rod, and the baffle 511 is fixedly connected to the end of the piston rod away from the second cylinder 510. The second cylinder 510 pushes the piston rod to extend upward, driving the baffle 511 to rise, preventing the tooling main body 1 from working next time. After the staff replaces the preloading block 4, the second cylinder 510 is manually started through the controller 58 to lower the baffle 511. This maintenance device checks and maintains the preloading block 4 by the staff manually toggling the insulating handle after the press-fitting tooling completes the operation. When it is detected that the preloading block 4 is worn more seriously, it cooperates with the sliding plate 52.The inclined plane block 56 and the pressure sensor 57 send signals to the controller 58, enabling the controller 58 to control the alarm 59 to give an alarm and lock the first cylinder 3, preventing continued operation in the case where the preloading block 4 is severely worn, thus avoiding large errors in the dimensions of the products produced by press-fitting and solving the problem of being unable to determine whether the preloading block 4 needs to be replaced.

[0029] During the operation of this embodiment: Two preloading blocks 4 are added at the positions where the dimensions of the products of the press-fitting tooling, the rims 3 and 9, are the most stable. During press-fitting, the preloading block 4 first compresses the positions where the dimensions of the spokes 3 and 9 are the most stable, and then press-fitting production is carried out. After the production is completed, when the press-fitting tooling stops, the insulating handle is toggled, causing the insulating handle to drive the connecting block 55 to slide. When the connecting block 55 slides, it drives the electromagnetic rod 53 to slide. The electromagnetic rod 53 slides along the upper surface of the preloading block 4. When the electromagnetic rod 53 slides to a place where the preloading block 4 is severely worn, the electromagnetic rod 53 slides downward due to gravity. The downward sliding of the electromagnetic rod 53 drives the support plate 54 to move downward. The sliding plate 52 is no longer supported by the support plate 54 and also slides downward following the support plate 54. When the sliding plate 52 slides downward, its side is in sliding connection with the inclined surface of the inclined plane block 56, pushing the inclined plane block 56 to slide away from the box body 51. When the inclined plane block 56 slides towards the pressure sensor 57, the pressure sensor 57 detects the pressure and sends a signal to the controller 58. After receiving the signal, the controller 58 controls the second cylinder 510 to start and controls the alarm 59 to give an alarm. The second cylinder 510 pushes the piston rod to extend upward, driving the baffle 511 to rise, preventing the next operation of the tooling main body 1. After the staff replaces the preloading block 4, the second cylinder 510 is manually started through the controller 58 to lower the baffle 511.

[0030] Please refer to Figures 1-6, on the basis of the above embodiments, in another embodiment of the present invention, a cleaning device for conveniently removing debris such as metal chips on the preloading block 4 is provided inside the maintenance device. The cleaning device includes a compression spring 61, a conductive plate 62, a support spring 63, a storage battery 64, and a collection box 65. The compression spring 61 is fixedly connected to the bottom surface of the inner wall of the box body 51. The conductive plate 62 is fixedly connected to one end of the compression spring 61 away from the bottom surface of the inner wall of the box body 51. When the electromagnetic rod 53 slides to the right, it drives the support plate 54 to slide to the right. When the support plate 54 slides to disengage from the conductive plate 62, the conductive plate 62 slides upward under the elastic force of the compression spring 61 and contacts the sliding plate 52. The support spring 63 is fixedly connected to the bottom surface of the inner wall of the box body 51. The storage battery 64 is fixedly connected to one end of the support spring 63 away from the bottom surface of the inner wall of the box body 51. The output end of the storage battery 64 is fixedly connected to the bottom surface of the conductive plate 62. Since the bottom surface of the conductive plate 62 is fixedly connected to the storage battery 64, when the sliding plate 52 contacts the conductive plate 62, it also conducts electricity, making the electromagnetic rod 53 energized. After the electromagnetic rod 53 is energized, it generates a magnetic field to adsorb debris such as metal chips on the preloading block 4. The collection box 65 is fixedly connected to the side wall of the box body 51. When the electromagnetic rod 53 drives the support plate 54 to slide to the conductive plate 62, the inclined surface of the support plate 54 is slidably connected to the side of the conductive plate 62, pushing the conductive plate 62 to slide downward to separate the conductive plate 62 from the sliding plate 52. The sliding plate 52 no longer contacts the conductive plate 62. At this time, the electromagnetic rod 53 has slid above the collection box 65, and the electromagnetic rod 53 no longer generates a magnetic field after being de-energized. The metal chips adsorbed on the outer wall of the electromagnetic rod 53 fall into the collection box 65. While the maintenance device checks the wear degree of the preloading block 4, the cleaning device energizes the conductive plate 62 through the storage battery 64, cooperates with the conductive sliding plate 52, and the compression spring 61 and the support spring 63 energize the electromagnetic rod 53 to make the electromagnetic rod 53 generate a magnetic field to adsorb the metal chips on the preloading block 4, avoiding the electromagnetic rod 53 pressing over the metal chips when checking the preloading block 4 and causing scratches on the preloading block 4, thus affecting the internal stress of the preloading block 4, and solving the problem that the metal chips that may exist on the preloading block 4 are likely to cause defects such as scratches on the preloading block 4 and affect the pressing work.

[0031] Inside the maintenance device, there is an auxiliary device with an auxiliary cleaning device for further removing debris. The auxiliary device includes a return spring 71, a connecting plate 72, a pushing block 73, a pressing block 74, and a knocking rod 75. The return spring 71 is fixedly connected to the side wall of the electromagnetic rod 53. The connecting plate 72 is fixedly connected to the end of the return spring 71 away from the electromagnetic rod 53. The pushing block 73 is fixedly connected to the side of the connecting plate 72 away from the return spring 71. When the electromagnetic rod 53 slides, it drives the return spring 71, the connecting plate 72, and the pushing block 73 to move. The pressing block 74 is fixedly connected to the inner wall of the box body 51. When the electromagnetic rod 53 drives the pushing block 73 to move to the pressing block 74, the pushing block 73 is in sliding connection with the inclined surface of the pressing block 74. The pressing block 74 pushes the pushing block 73 to move in the direction of the electromagnetic rod 53, driving the connecting plate 72 to compress the return spring 71. The knocking rod 75 is fixedly connected to the side of the connecting plate 72 close to the return spring 71. The connecting plate 72 drives the knocking rod 75 to knock on the inner wall of the box body 51, causing the box body 51 to drive the pre-pressing block 4 to vibrate, so that the debris in the groove of the pre-pressing block 4 bounces up and is closer to the electromagnetic rod 53. While cleaning the pre-pressing block 4, this auxiliary device, through the extrusion of the pressing block 74 on the pushing block 73, cooperates with the return spring 71 to make the connecting plate 72 drive the knocking rod 75 to repeatedly knock on the inner wall of the box body 51, causing the box body 51 to vibrate. Also, the side wall of the box body 51 is in contact with the pre-pressing block 4. When the box body 51 vibrates, it drives the pre-pressing block 4 to vibrate as well, causing the debris in the groove of the pre-pressing block 4 to shake and bounce up, preventing the debris from getting stuck in the groove of the pre-pressing block 4 and being at a relatively far distance from the electromagnetic rod 53, so that it cannot be adsorbed on the outer wall of the electromagnetic rod 53, solving the problem that due to its own limitations, the magnetic field range generated by the electromagnetic rod 53 is small and it cannot clean the inside of the groove of the pre-pressing block 4.

[0032] When this embodiment works: When the electromagnetic rod 53 slides to the right, it drives the support plate 54 to slide to the right. When the support plate 54 slides to disengage from the conductive plate 62, the conductive plate 62 slides upward under the elastic force of the compression spring 61 and contacts the sliding plate 52. Since the bottom surface of the conductive plate 62 is fixedly connected to the storage battery 64, when the sliding plate 52 contacts the conductive plate 62, it also conducts electricity, making the electromagnetic rod 53 energized. After the electromagnetic rod 53 is energized, it generates a magnetic field to adsorb metal debris and other sundries on the pre-pressing block 4. After the electromagnetic rod 53 finishes inspecting the pre-pressing block 4 and resets, when the electromagnetic rod 53 drives the support plate 54 to slide to the conductive plate 62, the inclined surface of the support plate 54 is in sliding connection with the side of the conductive plate 62, pushing the conductive plate 62 to slide downward and separating the conductive plate 62 from the sliding plate 52. The sliding plate 52 no longer contacts the conductive plate 62. At this time, the electromagnetic rod 53 has slid above the collection box 65, and the electromagnetic rod 53 no longer generates a magnetic field after being de-energized. The metal debris adsorbed on the outer wall of the electromagnetic rod 53 falls into the collection box 65.

[0033] When the electromagnetic rod 53 slides, it drives the return spring 71, the connecting plate 72 and the push block 73 to move. When the electromagnetic rod 53 drives the push block 73 to move to the extrusion block 74, the push block 73 is slidably connected to the inclined surface of the extrusion block 74. The extrusion block 74 pushes the push block 73 to move in the direction of the electromagnetic rod 53, driving the connecting plate 72 to squeeze the return spring 71. At the same time, the connecting plate 72 drives the knocking rod 75 to knock on the inner wall of the box body 51, causing the box body 51 to drive the preloading block 4 to vibrate, so that the debris in the groove of the preloading block 4 bounces up and is closer to the electromagnetic rod 53. When the push block 73 moves away from the extrusion block 74, the connecting plate 72 is driven by the elastic force of the return spring 71 to drive the push block 73 and the knocking rod 75 to reset.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressing and connecting tooling for a steering wheel counterweight steel bar, comprising a tooling main body (1), characterized in that: On the upper surface of the inner wall of the tooling main body (1), a clamping jaw (2) is fixed. On the inner wall of the tooling main body (1), a first cylinder (3) is fixed. On the inner wall of the tooling main body (1), a pre-pressing block (4) is fixed. On the outside of the pre-pressing block (4), a maintenance device for detecting the wear degree of the pre-pressing block (4) is provided. Inside the maintenance device, a cleaning device for conveniently removing sundries such as metal chips on the pre-pressing block (4) is provided. Inside the maintenance device, an auxiliary device for further removing debris by the auxiliary cleaning device is provided. Among them, the maintenance device includes a box body (51), a sliding plate (52), an electromagnetic rod (53), a support plate (54), a connecting block (55), an inclined plane block (56), a pressure sensor (57), a controller (58), an alarm (59), a second cylinder (510) and a baffle (511). The box body (51) is fixedly connected to the inner wall of the tooling main body (1). The sliding plate (52) is slidably connected to the inner wall of the box body (51). The outer wall of the electromagnetic rod (53) is in contact with the upper surface of the pre-pressing block (4).

2. The crimping tool for the steering wheel counterweight steel bar according to claim 1, wherein: The electromagnetic rod (53) penetrates through the upper surface of the box body (51), and the penetration part is slidably connected. The electromagnetic rod (53) penetrates through the sliding plate (52), and the penetration part is slidably connected. The support plate (54) is fixedly connected to the bottom end of the electromagnetic rod (53).

3. The crimping tooling for the steering wheel counterweight steel bar according to claim 2, characterized in that: The electromagnetic rod (53) penetrates through the connecting block (55), and the penetration part is slidably connected. On the side wall of the connecting block (55) away from the electromagnetic rod (53), an insulating handle is fixed. The inclined plane block (56) is slidably connected to the bottom surface of the inner wall of the box body (51).

4. The crimping tooling for the steering wheel counterweight steel strip according to claim 3, characterized in that: The pressure sensor (57) is fixedly connected to the inner wall of the tooling main body (1). The input end of the pressure sensor (57) is in contact with the side wall of the inclined plane block (56) away from the box body (51). The controller (58) is fixedly connected to the front surface of the pressure sensor (57). The pressure sensor (57) is electrically connected to the controller (58).

5. A crimping tool for a steering wheel counterweight steel bar according to claim 4, characterized in that: The alarm (59) is fixedly connected to the front surface of the pressure sensor (57). The controller (58) is electrically connected to the alarm (59). The second cylinder (510) is fixedly connected to the inner wall of the tooling main body (1). The controller (58) is electrically connected to the second cylinder (510). The piston of the second cylinder (510) is connected with a piston rod. The baffle (511) is fixedly connected to the end of the piston rod away from the second cylinder (510).

6. The crimping tooling for the steering wheel counterweight steel bar according to claim 1, wherein: The cleaning device includes a compression spring (61), a conductive plate (62), a support spring (63), a storage battery (64) and a collection box (65). The compression spring (61) is fixedly connected to the bottom surface of the inner wall of the box body (51). The conductive plate (62) is fixedly connected to the end of the compression spring (61) away from the bottom surface of the inner wall of the box body (51).

7. A crimping tool for a steering wheel counterweight steel bar according to claim 6, characterized in that: The support spring (63) is fixedly connected to the bottom surface of the inner wall of the box body (51), the storage battery (64) is fixedly connected to one end of the support spring (63) away from the bottom surface of the inner wall of the box body (51), the output end of the storage battery (64) is fixedly connected to the bottom surface of the conductive plate (62), and the collection box (65) is fixedly connected to the side wall of the box body (51).

8. A crimping tool for a steering wheel counterweight steel bar according to claim 1, characterized in that: The auxiliary device includes a return spring (71), a connecting plate (72), a push block (73), a pressing block (74) and a knocking rod (75). The return spring (71) is fixedly connected to the side wall of the electromagnetic rod (53), and the connecting plate (72) is fixedly connected to one end of the return spring (71) away from the electromagnetic rod (53).

9. The crimping tooling for the steering wheel counterweight steel strip according to claim 8, wherein: The push block (73) is fixedly connected to one side of the connecting plate (72) away from the return spring (71), the pressing block (74) is fixedly connected to the inner wall of the box body (51), and the knocking rod (75) is fixedly connected to one side of the connecting plate (72) close to the return spring (71).