Automatic compressor support bolt tightening machine

Abstract

The utility model discloses a kind of compressor support bolt automatic tightening machine, it is related to bolt automatic fastening technical field;Including rack and the three-axis movement module being set on rack, functional execution component is installed in the output end of X direction screw rod module, the sleeve is fixed in this output end, the sleeve side intercommunication is provided with feeding channel, the gasket bearing disc is arranged below the sleeve;The top of sleeve is fixedly installed electric cylinder, the bottom output end of electric cylinder is fixedly installed with torque motor, the output end of torque motor is coaxially fixed with spanner.The utility model is positioned by three-axis moving assembly and functional execution component cooperation, accurately the position that needs bolt fastening is positioned, then through feeding channel automatic feeding fastening bolt and gasket bearing disc automatically provide gasket, and both are limited by floating limiting component before stress, it is convenient to automatically complete separation after stress, significantly improve bolt assembly efficiency, reduce manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of automatic bolt tightening technology, specifically an automatic bolt tightening machine for compressor brackets. Background Technology

[0002] The compressor is a core component in equipment such as air conditioning systems, and it is typically fixed to the vehicle using brackets and bolts. The quality of the bolt tightening on the compressor bracket directly affects the reliability of the compressor's fixation and operational stability, and has a significant impact on the vehicle's noise, vibration, and other performance parameters.

[0003] Currently, in the automotive parts and other assembly manufacturing sectors, the bolt tightening process for compressor brackets is still mostly done manually using pneumatic or electric wrenches. This method has many drawbacks: First, manual tightening is inefficient and labor-intensive, making it difficult to meet the high-speed requirements of modern production lines; second, manual operation cannot precisely control the tightening torque of each bolt, easily leading to insufficient torque or over-tightening, resulting in quality problems such as bolt loosening, breakage, or bracket deformation, leading to poor product consistency and reliability; third, this process usually requires the installation of shims, and manual operation is prone to problems such as omissions, incorrect installation, or misalignment of shims and bolts. Therefore, we provide an automatic compressor bracket bolt tightening machine. Utility Model Content

[0004] The purpose of this invention is to provide an automatic compressor bracket bolt tightening machine to solve the above-mentioned problems.

[0005] This utility model can be achieved through the following technical solution: an automatic bolt tightening machine for compressor brackets, including a frame and a three-axis motion module mounted on the frame. The three-axis motion module includes a Y-axis slide for fixing the bracket product and a Z-axis lead screw module and an X-axis lead screw module for mounting functional execution components. The function execution component is installed at the output end of the X-direction screw module. A sleeve is fixed at the output end. A feeding channel for intermittently feeding fastening bolts is provided on one side of the sleeve. An intermittently rotatable shim carrier plate for intermittently supplying shims is provided below the sleeve. An electric cylinder is fixedly installed on the top of the sleeve, and a torque motor is fixedly installed on the bottom output end of the electric cylinder. A wrench is coaxially fixed on the output end of the torque motor.

[0006] A further technical improvement of this utility model is that: the inner side wall of the sleeve is provided with multiple mounting grooves, and each mounting groove is equipped with a ball bearing by a spring for limiting the bolt head.

[0007] A further technical improvement of this utility model is that the feeding channel is inclined on one side of the sleeve, and an electromagnetic expansion valve fixed to the sleeve is provided above the feeding channel. The expansion and contraction end of the electromagnetic expansion valve controls the gap with the inner wall of the sleeve through the expansion and contraction state to control the slippage of the fastening bolt.

[0008] A further technical improvement of this utility model is that: there is a delay between the extended state and the retracted state of the extension end of the electromagnetic expansion valve, and the delay time allows a fastening bolt to pass through the limit position of the electromagnetic expansion valve.

[0009] A further technical improvement of this utility model is that a transmission box is fixed to the lower side wall of the sleeve, and a gear transmission group is provided inside. One gear is driven by a rotary motor installed on the top of the transmission box, and the other gear is fixed coaxially with the gasket bearing plate through a rotating shaft.

[0010] A further technical improvement of this utility model is that: the gasket bearing plate is provided with multiple positioning grooves, and each positioning groove is hinged with a limit block by a torsion spring to limit the position of the gasket.

[0011] A further technical improvement of this utility model is that the bottom of the wrench is provided with magnetic material, which is used to attract and keep the fastening bolt in a vertical position.

[0012] A further technical improvement of this utility model is that: a pressure sensor is provided on the limiting block to detect whether a pad is placed in the positioning groove. The pressure sensor is equipped with an alarm threshold, which triggers an alarm when a pad is missing or too many are placed.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a three-axis moving component and a functional execution component to accurately position the location where bolts need to be tightened. Then, the fastening bolts are automatically fed in through the feeding channel, and the gasket carrier plate automatically provides the gaskets. Both are limited by floating limit components before being subjected to force, which facilitates automatic disengagement after being subjected to force. This significantly improves bolt assembly efficiency and reduces manual intervention. At the same time, a torque motor is used to control the tightening torque to ensure that the tightening force of each bolt is consistent, thereby improving product reliability and safety. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a front view schematic diagram of the overall external structure of this utility model; Figure 2 This is a schematic diagram showing the connection of the functional execution components of this utility model; Figure 3 This utility model Figure 2Enlarged detail diagram at point A in the middle; Figure 4 This utility model Figure 2 Enlarged view of details at point B in the middle.

[0016] In the diagram: 1. Frame; 2. Y-axis slide; 4. Two-axis moving assembly; 5. Support product; 6. Sleeve; 7. Fixing frame; 8. Electric cylinder; 9. Sliding seat; 11. Torque motor; 12. Wrench; 13. Feeding channel; 14. Electromagnetic expansion valve; 15. Transmission box; 16. Rotary motor; 17. Gasket bearing plate; 18. Ball bearing; 19. Spring; 20. Limit block. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] Please see Figure 1-4 As shown, an automatic compressor bracket bolt tightening machine includes a frame 1, a Y-axis slide 2 horizontally mounted on the platform of the frame 1, and a bracket product 5 fixed on the top of the Y-axis slide 2; a two-axis moving assembly is mounted vertically on the frame 1, the two-axis moving assembly includes a Z-axis lead screw module and an X-axis lead screw module, which are used for Z-axis and X-axis movement adjustment respectively; specifically, the X-axis lead screw module is fixed at the output end of the Z-axis lead screw module, and a function execution component is fixed at the output end of the X-axis lead screw module; The functional execution component includes a mounting plate fixed to the output end of the X-direction lead screw module. A sleeve 6 is fixed to one side of the mounting plate. A fixing frame 7 is mounted on the top of the sleeve 6 via a support shaft. An electric cylinder 8 is fixed to the top of the fixing frame 7. A sliding seat 9 is vertically and slidably installed inside the sleeve 6. A torque motor 11 is mounted on the top of the sliding seat 9. The output end of the torque motor 11 passes through the sliding seat 9 and is fixedly connected to one end of a wrench 12 directly below it. The telescopic end of the electric cylinder 8 passes through the fixing frame 7 and is fixed to the housing of the torque motor 11. Magnetic material is provided at the bottom of the wrench 12.

[0019] An inclined feeding channel 13 is fixedly connected to one side of the sleeve 6. The feeding channel 13 is used to intermittently feed the fastening bolt. An electromagnetic expansion valve 14 is installed on the sleeve 6 above the feeding channel 13. The expansion rod of the electromagnetic expansion valve 14 passes through the side wall of the feeding channel 13 and extends into the interior. When its expansion rod is in the extended state, the expansion rod limits the head of the fastening bolt to prevent it from slipping. When its expansion rod is in the retracted state, the expansion rod contacts the limit on the head of the fastening bolt, causing the fastening bolt to slide into the sleeve 6 under the action of the component of gravity. Multiple mounting grooves are evenly provided at equal angles on the bottom inner wall of the sleeve 6. A ball bearing 18 is floatingly installed in the mounting groove by a spring 19. In the natural state, the ball bearing 18 is exposed in the mounting groove under the action of the spring 19. When the fastening bolt slides down to the sleeve 6, the ball bearing 18 limits the head of the fastening bolt, so that it is in a suspended state with the head above. A transmission housing 15 is fixed to the lower outer wall of the sleeve 6. A pair of gears are meshed and driven inside the transmission housing 15. A rotary motor 16 is fixedly installed on the top of the transmission housing 15. The output end of the rotary motor 16 is coaxially fixed with one of the gears. The other gear is coaxially fixed with a rotating shaft that rotates relative to the transmission housing 15. The bottom end of the rotating shaft passes through the transmission housing 15 and a washer bearing plate 17 is coaxially fixed at the end. The gasket support plate 17 is evenly provided with multiple positioning grooves. Each positioning groove is evenly hinged with a limit block 20 by a torsion spring. Each positioning groove of the gasket support plate 17 contains a gasket, which is limited by the limit block 20.

[0020] When using this utility model, place and fix the bracket product 5 on the Y-axis slide table 2, and manually place a certain number of fastening bolts into the feeding channel 13. At the same time, place a shim in the groove at each point, and then press the start button. The Y-axis slide 2 moves the bracket product 5 into the frame 1. The two-axis moving component 4 drives the function execution component to reach the preset working coordinate position, and then the telescopic rod of the electromagnetic telescopic valve 14 retracts. After a short delay, the telescopic rod returns to the initial position. This delay allows the foremost fastening bolt to slip off and can promptly limit the fastening bolts behind it. After the slipped fastening bolt falls and is limited by the ball bearing 18, the drive motor 16 rotates, and through gear transmission, the gasket of one of the positioning grooves is positioned directly below the outlet of the sleeve 6. Then, the electric cylinder 8 is activated, driving the torque motor 11 and the sliding seat 9 to move downward. The wrench 12 at the bottom of the sliding seat 9 moves downward and engages with the top force groove of the fastening bolt, and then presses downward, causing the head of the fastening bolt to press the ball bearing 18 and move downward, passing through the middle of the gasket and continuing to move downward, causing the gasket to press the limiting block 20 and disengage until it falls on the corresponding fastening position on the bracket product 5. The magnetic material of the wrench 12 keeps the fastening bolt vertical and enters the connecting hole on the bracket product 5. Then, the torque motor 11 is activated, and its output end rotates, driving the wrench 12 to rotate as well. The fastening bolt is screwed into the connecting hole. During the operation of the torque motor 11, the output end of the electric cylinder 8 continues to move slowly downward, cooperating with the screw-tightening operation of the torque motor 11. When the torque applied to the wrench 12 inside the bolt reaches a certain value, it indicates that the bolt has been tightened. The torque motor 11 stops rotating, and the output end of the electric cylinder 8 quickly returns to the initial position. The Y-axis slide 2 and the two-axis moving assembly 4 cooperate to position the bolt to the next tightening position. The above operation is repeated to continue the bolt tightening operation.

[0021] It should be noted that the limiting block 20 on the gasket support plate 17 is equipped with a pressure sensor to detect whether a gasket is placed in the positioning groove. The pressure sensor has an alarm threshold, which will trigger an alarm if a gasket is missing or too many are placed.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A compressor support bolt automatic tightening machine, comprising a rack (1) and a three-axis motion module arranged on the rack (1), characterized in that, The three-axis motion module includes a Y-axis slide (2) for fixing the bracket product (5) and a Z-axis lead screw module and an X-axis lead screw module for mounting the functional execution components; The function execution component is installed at the output end of the X-direction screw module. A sleeve (6) is fixed at the output end. A feeding channel (13) for intermittently conveying fastening bolts is provided on one side of the sleeve (6). An intermittently rotatable gasket bearing plate (17) for supplying gaskets is provided below the sleeve (6). An electric cylinder (8) is fixedly installed on the top of the sleeve (6), and a torque motor (11) is fixedly installed on the bottom output end of the electric cylinder (8). A wrench (12) is coaxially fixed on the output end of the torque motor (11).

2. The compressor bracket bolt automatic tightening machine according to claim 1, characterized in that, The inner wall of the sleeve (6) is provided with multiple mounting grooves, and each mounting groove is equipped with a ball (18) by means of a spring (19) for limiting the bolt head.

3. The compressor bracket bolt automatic tightening machine according to claim 1, characterized in that, The feeding channel (13) is inclinedly arranged on one side of the sleeve (6), and an electromagnetic expansion valve (14) fixed to the sleeve (6) is provided above the feeding channel (13). The expansion and contraction end of the electromagnetic expansion valve (14) controls the gap with the inner wall of the sleeve (6) through the expansion and contraction state to control the slippage of the fastening bolt.

4. The compressor bracket bolt automatic tightening machine according to claim 3, characterized in that, The electromagnetic expansion valve (14) has a delay between the extended state and the retracted state of its extension end, and the delay time allows a fastening bolt to pass through the limit position of the electromagnetic expansion valve (14).

5. The compressor bracket bolt automatic tightening machine of claim 1, wherein, The lower side wall of the sleeve (6) is fixed with a transmission box (15), which is equipped with a gear transmission group. One gear is driven by a rotary motor (16) installed on the top of the transmission box (15), and the other gear is fixed coaxially with the gasket bearing plate (17) through a rotating shaft.

6. The compressor bracket bolt automatic tightening machine of claim 1, wherein, The gasket bearing plate (17) is provided with multiple positioning grooves, and each positioning groove is hinged with a limit block (20) by a torsion spring to limit the gasket.

7. The compressor bracket bolt automatic tightening machine of claim 1, wherein, The bottom of the wrench (12) is provided with magnetic material to attract and keep the bolt in a vertical position.

8. An automatic compressor bracket bolt tightening machine according to claim 6, characterized in that, The limiting block (20) is equipped with a pressure sensor to detect whether a pad is placed in the positioning groove. The pressure sensor is equipped with an alarm threshold, which will trigger an alarm if a pad is missing or too many are placed.

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