Visual guidance tightening tool

Abstract

The utility model discloses a visual guidance tightening tool, which is used for tightening a screw on a battery pack and comprises a fixed seat, a pair of tightening modules, a pair of visual modules, a guide module and a distance adjusting module, the pair of tightening modules tighten the screws; the pair of visual modules is connected with the pair of tightening modules respectively, and the visual modules detect the hole positions of the screws; the distance adjusting module drives the other tightening module to move in the horizontal direction so as to adjust the distance between the pair of tightening modules. The guide module limits and guides the moving direction of the other tightening module. According to the utility model, the visual guiding and spacing adjusting module is additionally arranged, so that the problem of inconsistent tightening spacing caused by product machining tolerance is solved; through the two tightening guns, two screws are tightened at the same time, the efficiency is improved, and the cost is reduced; the caliper is added to greatly reduce debugging difficulty, and tightening precision and tightening efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack screw tightening, and particularly relates to a visual guidance tightening tooling. Background Art

[0002] In the prior art, there are many screws on the upper cover of the battery pack. Manual tightening has low efficiency and high labor intensity. Therefore, robots with tightening guns are gradually used to replace manual labor on the production line. Currently, there are the following methods: First, one robot is equipped with one tightening gun. After debugging and correcting the position, the tightening accuracy can be guaranteed. Since one tightening gun can only be aimed at one tightening position, multiple robots are required for one working station. On the one hand, the cost is relatively high. On the other hand, the interference areas generated by multiple robots are more, reducing the tightening efficiency. Second, one robot is equipped with two tightening guns. Although the cost can be reduced, this requires that the distance between the tightening positions of each battery pack product must be consistent, increasing the difficulty of product manufacturing, with poor compatibility, and it is difficult to debug the tightening accuracy. Moreover, the on-site debugging workload is large, and it is easy to occur the situation of nail jamming and product damage. Summary of the Invention

[0003] According to an embodiment of the utility model, there is provided a visual guidance tightening tooling for tightening the screws on the battery pack, which includes: a fixed seat, a pair of tightening modules, a pair of visual modules, a guiding module, and a spacing adjusting module;

[0004] The spacing adjusting module is fixed on the fixed seat, the guiding module is fixed on the fixed seat along the horizontal direction, and the fixed seat is connected to an external robot;

[0005] A pair of tightening modules tighten the screws, one of the tightening modules is fixed on the fixed seat, and the other tightening module is connected to the output end of the spacing adjusting module and the guiding module;

[0006] A pair of visual modules are respectively connected to a pair of tightening modules, and the visual modules detect the hole positions of the screws;

[0007] The spacing adjusting module drives the other tightening module to move horizontally to adjust the spacing between the pair of tightening modules;

[0008] The guiding module defines and guides the moving direction of the other tightening module.

[0009] Furthermore, the guiding module includes: a pair of first guide rails, a pair of first sliders, and a pair of first limit blocks;

[0010] The first guide rails are horizontally fixed on the fixed seat, the pair of first guide rails are parallel to each other, and are respectively arranged on the upper and lower sides of the spacing adjusting module;

[0011] A pair of first sliders are respectively slidably connected to a pair of first guide rails, and the pair of first sliders are fixedly connected to another tightening module;

[0012] The first limit blocks are fixed on the fixed seat. A pair of first limit blocks are arranged between the pair of first guide rails and are respectively arranged at both ends of the first guide rails. The first limit blocks limit the moving range of the tightening module.

[0013] Furthermore, the spacing adjustment module includes: a driving motor, a lead screw, and a sliding sleeve;

[0014] The driving motor is installed on the fixed seat;

[0015] The lead screw is connected to the output end of the driving motor, and both ends of the lead screw are rotatably connected to the fixed seat;

[0016] The sliding sleeve is sleeved on the lead screw and is threadedly connected to the lead screw. The sliding sleeve is fixedly connected to another tightening module;

[0017] The driving motor drives the lead screw to rotate, driving the sliding sleeve and another tightening module to move along the lead screw.

[0018] Furthermore, the vision module includes: a mounting block and a vision camera;

[0019] The mounting block is fixedly connected to the tightening module, and the vision camera is installed on the mounting block;

[0020] The vision camera is opposite to the hole position of the screw for detecting the hole position of the screw.

[0021] Furthermore, the tightening module includes: a mounting plate, a tightening gun, and a lifting mechanism;

[0022] The mounting plate is connected to the fixed seat;

[0023] The tightening gun and the lifting mechanism are installed on the mounting plate, and the tightening gun is connected to the lifting mechanism;

[0024] The lifting mechanism drives the tightening gun to move in the vertical direction, and the tightening gun outputs screws and tightens the screws on the battery pack.

[0025] Furthermore, the lifting mechanism includes: a cylinder, a second slider, a third slider, a second guide rail, a second limit block, and a reset component;

[0026] The second guide rail is fixedly installed on the mounting plate in the vertical direction;

[0027] The second slider and the third slider are arranged in a vertical row and slidably arranged on the second guide rail. The second slider is located above the third slider;

[0028] The second limit block is fixed at the bottom end of the mounting plate to limit the sliding range of the third slider;

[0029] The top of the tightening gun is fixed to the second slider and sequentially passes through the third slider and the second limiting block;

[0030] The air cylinder is fixed to the mounting plate, and the output end of the air cylinder faces the second slider to drive the second slider to descend;

[0031] The reset assembly is arranged between the second slider and the third slider, and the reset assembly drives the second slider to reset.

[0032] Furthermore, the reset assembly includes: a guide rod and a reset spring;

[0033] Both ends of the guide rod are respectively fixed to the top of the mounting plate and the third slider and pass through the second slider;

[0034] The reset spring is sleeved on the guide rod, and both ends of the reset spring respectively abut against the bottom of the second slider and the top of the third slider, and the reset spring drives the second slider to reset.

[0035] Furthermore, it also includes: a caliper and a pointer;

[0036] The caliper is fixed to the top of the fixed seat;

[0037] The pointer is fixed to another tightening module and is connected to the caliper, and the pointer indicates the horizontal movement distance of another tightening module.

[0038] According to the visual guidance tightening tooling of the embodiment of the present utility model, a visual guidance and spacing adjustment module is added, which overcomes the problem of inconsistent tightening spacing caused by product processing tolerances; through two tightening guns, simultaneous tightening of two screws is achieved, improving efficiency and reducing costs; adding a caliper greatly reduces the debugging difficulty and improves the tightening accuracy and tightening efficiency.

[0039] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. Brief Description of the Drawings

[0040] Figure 1 It is a structural diagram of the visual guidance tightening tooling according to the embodiment of the present utility model;

[0041] Figure 2 It is a front view of the visual guidance tightening tooling according to the embodiment of the present utility model;

[0042] Figure 3 It is a top view of the visual guidance tightening tooling according to the embodiment of the present utility model;

[0043] Figure 4 It is a side view of the visual guidance tightening tooling according to the embodiment of the present utility model. Detailed Description of the Embodiment

[0044] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, and the present utility model will be further elaborated.

[0045] First, in conjunction with Figures 1 to 4 A vision-guided tightening tooling according to an embodiment of the present utility model is described, which is used to tighten the screws of the battery pack upper cover and has a wide range of application scenarios.

[0046] As Figures 1 to 4 shown, the vision-guided tightening tooling of the embodiment of the present utility model for tightening the screws on the battery pack includes: a fixed seat 1, a pair of tightening modules, a pair of vision modules 2, a guiding module 3, and a spacing adjustment module 4.

[0047] Specifically, as Figures 1 to 4 shown, in this embodiment, the spacing adjustment module 4 is fixed on the fixed seat 1, the guiding module 3 is fixed on the fixed seat 1 in the horizontal direction, the fixed seat 1 is connected to an external robot, and a connecting flange is installed on the fixed seat 1 to connect to the external robot through the connecting flange; a pair of tightening modules tighten the screws, and the structures of the pair of tightening modules are the same. One of the tightening modules is fixed on the fixed seat 1, and the other tightening module is connected to the output end of the spacing adjustment module 4 and the guiding module 3. One of the tightening modules is set as the fixed tightening module 5, and the other tightening module is set as the movable tightening module 6; a pair of vision modules 2 are respectively connected to the pair of tightening modules, and the vision module 2 detects the hole positions of the screws to ensure that the tightening module can accurately align with the positions of the screws. High-precision positioning reduces tightening errors and ensures tightening quality; the spacing adjustment module 4 drives the movable tightening module 6 to move horizontally to adjust the spacing between the pair of tightening modules; the guiding module 3 defines and guides the moving direction of the movable tightening module 6. The design of the guiding module 3 ensures the stability of the movable tightening module 6 during the moving process, reduces vibration and offset, and ensures the stability and reliability of the tightening process; the design of the pair of tightening modules allows multiple screws to be tightened simultaneously. By adjusting the spacing between the tightening modules through the spacing adjustment module 4, it can adapt to screw hole positions with different spacings, increasing the applicable range of the tooling; the automated tightening system reduces the number of manual operations of workers, reduces labor intensity, and improves the safety of the working environment.

[0048] Further, as Figures 1 to 4As shown in the figure, in this embodiment, the guiding module 3 includes: a pair of first guide rails 31, a pair of first sliders 32, and a pair of first limit blocks 33; the first guide rails 31 are horizontally fixed on the fixed seat 1, the pair of first guide rails 31 are parallel to each other, and are respectively arranged on the upper and lower sides of the pitch adjustment module 4; the pair of first sliders 32 are respectively slidably connected to the pair of first guide rails 31, and the pair of first sliders 32 are fixedly connected to the moving tightening module 6; the first limit blocks 33 are fixed on the fixed seat 1, the pair of first limit blocks 33 are arranged between the pair of first guide rails 31, and are respectively arranged at both ends of the first guide rails 31, and the first limit blocks 33 limit the moving range of the moving tightening module 6. The sliding connection between the first guide rail 31 and the slider provides a smooth moving path, reducing friction and vibration; at the same time, the first limit blocks 33 are fixed at both ends of the guide rail, limiting the moving range of the slider, preventing excessive movement or slipping out of the guide rail, and improving the stability and reliability of the system; by adjusting the position of the first slider 32 on the first guide rail 31, the pitch between the pair of tightening modules can be flexibly adjusted to adapt to screw hole positions with different pitches; the structure is simple, easy to maintain, and has strong load-bearing capacity.

[0049] Further, as Figures 1 to 4 shown in the figure, in this embodiment, the pitch adjustment module 4 includes: a driving motor 41, a lead screw 42, and a sliding sleeve 43; the driving motor 41 is installed on the fixed seat 1; the lead screw 42 is connected to the output end of the driving motor 41, and both ends of the lead screw 42 are rotatably connected to the fixed seat 1; the sliding sleeve 43 is sleeved on the lead screw 42 and is threadedly connected to the lead screw 42, and the sliding sleeve 43 is fixedly connected to the moving tightening module 6; the driving motor 41 drives the lead screw 42 to rotate, driving the sliding sleeve 43 and the moving tightening module 6 to move along the lead screw 42. By driving the lead screw 42 to rotate by the driving motor 41 and the sliding sleeve 43 to move along the lead screw 42, precise control of the moving tightening module 6 is achieved. The threaded connection between the lead screw 42 and the sliding sleeve 43 can provide high-precision position adjustment to ensure that the tightening module can be accurately positioned at the required position. The lead screw 42 transmission system usually has a self-locking function. When the driving motor 41 stops working, the lead screw 42 and the sliding sleeve 43 can maintain their current positions without moving, preventing position deviation caused by external forces and improving the tightening accuracy; the structure is simple and has a high load capacity.

[0050] Further, as Figures 1 to 4 shown in the figure, in this embodiment, the vision module 2 includes: a mounting block 21 and a vision camera 22; the mounting block 21 is fixedly connected to the tightening module, and the vision camera 22 is installed on the mounting block 21; the vision camera 22 faces the hole position of the screw and is used to detect the hole position of the screw. The vision camera 22 can detect the hole position of the screw in real time and provide immediate feedback. This real-time detection function helps to perform dynamic adjustment during the tightening process to ensure that each screw can be correctly positioned and tightened, which can not only accurately guide the robot but also avoid dry tightening and damage to the tightening equipment.

[0051] Furthermore, as Figures 1 to 4 shown, in this embodiment, the tightening module includes: a mounting plate 61, a tightening gun 62, and a lifting mechanism; the mounting plate 61 is connected to the fixed seat 1; the tightening gun 62 and the lifting mechanism are mounted on the mounting plate 61, and the tightening gun 62 is connected to the lifting mechanism; the lifting mechanism drives the tightening gun 62 to move in the vertical direction, and the tightening gun 62 outputs screws and tightens the screws on the battery pack. The lifting mechanism drives the tightening gun 62 to move in the vertical direction, enabling the tightening gun 62 to flexibly reach positions at different heights, adapting to battery packs of different heights and increasing the applicable range of the system; the mounting plate 61 is connected to the fixed seat 1 to ensure the overall stability of the tightening module. Through the lifting mechanism, a pair of tightening modules can not only tighten two screws simultaneously but also tighten one screw individually.

[0052] Furthermore, as Figures 1 to 4 shown, in this embodiment, the lifting mechanism includes: a cylinder 63, a second slider 64, a third slider 65, a second guide rail 66, a second limit block 67, and a reset assembly; the second guide rail 66 is fixed on the mounting plate 61 in the vertical direction; the second slider 64 and the third slider 65 are arranged vertically and slidably disposed on the second guide rail 66, and the second slider 64 is located above the third slider 65; the second limit block 67 is fixed at the bottom end of the mounting plate 61 to limit the sliding range of the third slider 65; the top of the tightening gun 62 is fixed on the second slider 64 and sequentially penetrates through the third slider 65 and the second limit block 67; the cylinder 63 is fixed on the mounting plate 61, and the output end of the cylinder 63 faces the second slider 64 to drive the second slider 64 to descend; the reset assembly is arranged between the second slider 64 and the third slider 65, and the reset assembly drives the second slider 64 to reset. The second guide rail 66 provides stable guidance, making the vertical movement of the second slider 64 and the third slider 65 smoother. The second limit block 67 limits the sliding range of the third slider 65 to prevent excessive movement, improving the stability and reliability of the system; the vertical movement driven by the cylinder 63 is fast and responsive, enabling the tightening gun 62 to quickly move to the working position; the reset assembly ensures that the second slider 64 can automatically reset after completing the tightening task; by adjusting the stroke of the cylinder 63 and the length of the second guide rail 66, it can flexibly adapt to tightening tasks at different heights and positions.

[0053] Furthermore, as Figures 1 to 4As shown, in this embodiment, the reset assembly includes: a guide rod 68 and a reset spring 69; both ends of the guide rod 68 are respectively fixed to the top of the mounting plate 61 and the third slider 65, and penetrate through the second slider 64; the reset spring 69 is sleeved on the guide rod 68, and both ends of the reset spring 69 are respectively abutted against the bottom of the second slider 64 and the top of the third slider 65, and the reset spring 69 drives the second slider 64 to reset. The reset spring 69 drives the second slider 64 to reset through elastic force, ensuring that after each tightening operation, the second slider 64 can automatically return to the initial position, ensuring that the tightening module is always in the correct initial position; the combined structure of the guide rod 68 and the reset spring 69 is simple and easy to manufacture and assemble.

[0054] Further, as Figures 1 to 4 shown, in this embodiment, it further includes: a caliper 7 and a pointer 8; the caliper 7 is fixed to the top of the fixed seat 1; the pointer 8 is fixed to the moving tightening module 6 and is connected to the caliper 7, and the pointer 8 indicates the horizontal movement distance of the moving tightening module 6. The pointer 8 is connected to the caliper 7, and the horizontal movement distance of the moving tightening module 6 can be displayed in real time. The operator can understand the current position of the tightening module in real time by observing the position of the pointer 8 on the caliper 7, which is convenient for monitoring and adjustment; the combination of the caliper 7 and the pointer 8 enables the operator to intuitively observe and adjust the position of the moving tightening module 6, simplifies the debugging process, and saves time and effort.

[0055] During use, the screw enters the tightening gun 62 through an external air pipe to complete automatic feeding of the screw, and the robot drives the tightening tooling to move to the set position, that is: above the screw hole position of the battery pack; first, the vision camera 22 takes a photo of the screw hole, taking pictures of the hole position and the hole pitch, and controls the driving motor 41 to drive the moving tightening module 6 to move according to the hole position and the hole pitch. After the moving tightening module 6 reaches the actual tightening position, the tightening gun 62 outputs the screw and screws it onto the battery pack.

[0056] Above, with reference to Figures 1 to 4 the visual guidance tightening tooling according to the embodiment of the present invention is described. The visual guidance and pitch adjustment module are added, which overcomes the problem of inconsistent tightening pitches caused by product processing tolerances; through two tightening guns, the simultaneous tightening of two screws is realized, improving efficiency and reducing costs; adding the caliper 7 greatly reduces the debugging difficulty and improves the tightening accuracy and tightening efficiency.

[0057] It should be noted that in this specification, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device including the elements.

[0058] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be construed as a limitation of the present utility model. After those skilled in the art have read the above content, various modifications and substitutions of the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims

1. A visually guided tightening tool for tightening screws on a battery pack, characterized in that: It includes: a fixing seat, a pair of tightening modules, a pair of visual modules, a guide module and a spacing adjustment module; The spacing adjustment module is fixed on the fixing seat, the guide module is fixed on the fixing seat in a horizontal direction, and the fixing seat is connected to an external robot; The pair of tightening modules tighten the screws, wherein one of the tightening modules is fixed on the fixing seat, and the other tightening module is connected to the output end of the spacing adjustment module and the guide module; The pair of visual modules are respectively connected to the pair of tightening modules, and the visual modules detect the hole positions of the screws; The spacing adjustment module drives the other tightening module to move horizontally to adjust the spacing between the pair of tightening modules; The guide module defines and guides the moving direction of another tightening module.

2. The visually guided tightening tool as claimed in claim 1, characterized in that: The guide module comprises: a pair of first guide rails, a pair of first slide blocks and a pair of first limit blocks; The first guide rail is horizontally fixed on the fixing seat, and the pair of first guide rails are parallel to each other and are respectively arranged on the upper and lower sides of the spacing adjustment module; The pair of first sliders are respectively slidably connected to the pair of first guide rails, and the pair of first sliders are fixedly connected to another tightening module; The first limit block is fixed on the fixing seat, the pair of first limit blocks are arranged between the pair of first guide rails and respectively arranged at two ends of the first guide rails, and the first limit blocks limit the moving range of the tightening module.

3. The visually guided tightening tool as claimed in claim 1, characterized in that: The spacing adjustment module comprises: a driving motor, a lead screw and a sliding sleeve; The driving motor is mounted on the fixing seat; The screw rod is connected to the output end of the driving motor, and both ends of the screw rod are rotatably connected to the fixing seat; The sliding sleeve is sleeved on the screw rod and is threadedly connected to the screw rod, and the sliding sleeve is fixedly connected to another tightening module; The driving motor drives the screw to rotate, driving the sliding sleeve and another tightening module to move along the screw.

4. The visually guided tightening tool as claimed in claim 1, characterized in that: The visual module comprises: a mounting block and a visual camera; The mounting block is fixedly connected to the tightening module, and the visual camera is mounted on the mounting block; The visual camera is opposite to the hole position of the screw and is used to detect the hole position of the screw.

5. The visually guided tightening tool as claimed in claim 1, characterized in that: The tightening module comprises: a mounting plate, a tightening gun and a lifting mechanism; The mounting plate is connected to the fixing seat; The tightening gun and the lifting mechanism are mounted on the mounting plate, and the tightening gun is connected to the lifting mechanism; The lifting mechanism drives the tightening gun to move in a vertical direction, and the tightening gun outputs screws and tightens the screws on the battery pack.

6. The visually guided tightening tool as claimed in claim 5, characterized in that: The lifting mechanism comprises: a cylinder, a second slider, a third slider, a second guide rail, a second limit block and a reset assembly; The second guide rail is fixed on the mounting plate along the vertical direction; The second slider and the third slider are arranged vertically and slidably on the second guide rail, and the second slider is located above the third slider; The second limit block is fixed at the bottom end of the mounting plate to limit the sliding range of the third sliding block; The top of the tightening gun is fixed on the second sliding block and passes through the third sliding block and the second limiting block in sequence; The cylinder is fixed on the mounting plate, and the output end of the cylinder is opposite to the second slider, driving the second slider to descend; The reset component is disposed between the second slider and the third slider, and the reset component drives the second slider to reset.

7. The visually guided tightening tool as claimed in claim 6, characterized in that: The reset assembly comprises: a guide rod and a reset spring; The two ends of the guide rod are respectively fixed on the top of the mounting plate and the third slider, and pass through the second slider; The return spring is sleeved on the guide rod, and two ends of the return spring are respectively in contact with the bottom of the second slider and the top of the third slider, and the return spring drives the second slider to return.

8. The visually guided tightening tool as claimed in claim 1, characterized in that: Also included: caliper and pointer; The caliper is fixed on the top of the fixing seat; The pointer is fixed on the other tightening module and connected to the caliper, and the pointer indicates the horizontal moving distance of the other tightening module.

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