A sleeve quick-change mechanism and automatic bolt tightening system

Abstract

This utility model discloses a quick-change sleeve mechanism and an automatic bolt tightening system. The quick-change sleeve mechanism includes a base, on which multiple sleeve fixing blocks for placing sleeves are fixedly installed. A slide block is also installed on the base, along with a drive unit that drives the slide block to translate relative to the base. A limiting unit corresponding to each sleeve fixing block is installed on the slide block. The translational movement of the slide block allows the limiting unit to switch between a yielding state and a limiting state. In the yielding state, the limiting unit does not affect the sleeve's detachment from the sleeve fixing block; in the limiting state, the limiting unit prevents the sleeve from detaching from the sleeve fixing block. In this invention, through the coordinated operation of an external screw tightening module and the drive unit, the screw tightening gun can automatically pick up and return sleeves of different specifications without manual intervention, significantly improving the level of automation and effectively increasing work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automation technology, and in particular to a quick-change sleeve mechanism and an automatic bolt tightening system. Background Technology

[0002] In modern automated assembly and maintenance operations, tightening or loosening bolts is a common and critical step. With the continuous development of intelligent manufacturing and industrial automation, the demand for automated bolt tightening equipment is increasing, especially in industries such as automotive, electronics, and aerospace, where the trend towards high efficiency, high precision, and unmanned operation is becoming increasingly apparent.

[0003] In existing technologies, such as the bolt tightening equipment disclosed in patent CN 106112494 A, which includes a screw tightening module, frequent replacement of the corresponding sleeve is required in practical applications to accommodate bolts of different sizes. Traditional sleeve replacement methods are mostly manual, which is not only inefficient but also prone to unstable assembly quality due to human error, making it difficult to meet the requirements of modern high-efficiency automated production lines. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a quick sleeve replacement mechanism and an automatic bolt tightening system that can realize automatic sleeve replacement without manual intervention.

[0005] Technical solution: To achieve the above objectives, the present invention provides a quick-change sleeve mechanism, which includes a base, on which a plurality of sleeve fixing blocks for placing sleeves are fixedly installed; a slide block is also installed on the base, and a drive unit for driving the slide block to translate relative to the base.

[0006] The slide block is equipped with a limiting unit corresponding to each of the sleeve fixing blocks; the translational movement of the slide block enables the limiting unit to switch between a yielding state and a limiting state; in the yielding state, the limiting unit does not affect the sleeve from detaching from the sleeve fixing block; in the limiting state, the limiting unit can prevent the sleeve from detaching from the sleeve fixing block.

[0007] Furthermore, of the base and the slide block, one is fixedly mounted with a slide rail, and the other is fixedly mounted with a slider; the slider slides in conjunction with the slide rail. In this design, the slider is fixed to the slide block, and the slide rail is fixed to the base. There are two slide rails and two sliders, with the two sliders respectively installed on the two side edges of the slide block.

[0008] Furthermore, the sleeve fixing blocks are arranged in multiple rows; the slide is a plate structure with a clearance groove to allow for the movement of the sleeve.

[0009] Furthermore, the limiting unit is a U-shaped sheet structure with a notch facing the corresponding sleeve fixing block, and it is fixed to the slide by screws.

[0010] Furthermore, the base is also equipped with buffer and limiting units located on both sides of the slide. The buffer and limiting units can buffer and limit the slide during the switching process, reducing impact and improving positioning accuracy.

[0011] Furthermore, it also includes a protective cover fixed relative to the base body, the protective cover covering other components installed inside the base body; the protective cover has through holes corresponding to each of the sleeve fixing blocks.

[0012] An automatic bolt tightening system includes the aforementioned quick-change sleeve mechanism and a screw tightening module. The screw tightening module includes a screw tightening motor and a sleeve connector, wherein the screw tightening motor can drive the sleeve connector to rotate. Furthermore, the screw tightening module can be driven by an external drive mechanism to move between the quick-change sleeve mechanism and the working position, and can move the screw tightening module closer to or further away from the quick-change sleeve mechanism. The drive mechanism can be a Cartesian robot, an industrial manipulator, or the like.

[0013] Furthermore, the screw tightening module also includes a connecting seat and a transition seat. The screw tightening motor is fixed on the transition seat, and the transition seat can slide relative to the connecting seat. A spring is provided between the connecting seat and the transition seat. The spring applies elastic force to the transition seat, causing the transition seat to tend to move closer to the sleeve quick-change mechanism.

[0014] Beneficial effects: The quick-change sleeve mechanism and automatic bolt tightening system of this utility model have the following beneficial effects:

[0015] (1) In this invention, the screw tightening gun can automatically pick up and return sleeves of different specifications through the coordinated cooperation of the external screw tightening module and the drive unit, without the need for manual intervention, which greatly improves the level of automation and effectively improves the work efficiency.

[0016] (2) The layout of arranging the sleeves in multiple rows makes the overall structure of the quick-change sleeve mechanism compact, reduces the travel of the external tightening gun to pick up and put down the sleeve, and can accommodate more sizes of sleeves for use.

[0017] (3) In the screw tightening module, a spring is set to apply elastic force to the transition seat. When the screw tightening module takes out the sleeve, the sleeve connector is driven to rotate by the screw tightening motor, and the spring can push the sleeve connector to dock with the sleeve. Attached Figure Description

[0018] Figure 1This is a diagram showing the internal structure of the sleeve quick-change mechanism;

[0019] Figure 2 This is a structural diagram of the quick-change sleeve mechanism;

[0020] Figure 3 This is a structural diagram of an automatic bolt tightening system.

[0021] In the diagram: a-sleeve; A-sleeve quick-change mechanism; 1-base; 2-sleeve fixing block; 3-slide block; 3a-gap groove; 4-drive unit; 5-limiting unit; 5a-notch; 6-slide rail; 7-slider; 8-buffered limiting unit; B-screw tightening module; 9-connecting seat; 10-screw tightening motor; 11-sleeve connector; 12-transition seat; 13-spring; 14-protective cover; 14a-through hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 The sleeve quick-change mechanism A shown includes a base 1, on which a plurality of sleeve fixing blocks 2 for placing sleeve a are fixedly installed; a slide block 3 is also installed on the base 1, and a drive unit 4 for driving the slide block 3 to translate relative to the base 1.

[0024] The slide block 3 is equipped with a limiting unit 5 corresponding to each of the sleeve fixing blocks 2; the translational movement of the slide block 3 enables the limiting unit 5 to switch between a yielding state and a limiting state; in the yielding state, the limiting unit 5 does not affect the sleeve a from disengaging from the sleeve fixing block 2; in the limiting state, the limiting unit 5 can prevent the sleeve a from disengaging from the sleeve fixing block 2.

[0025] In this invention, through the coordinated operation of the external screw tightening module B and the drive unit 4, the screw tightening gun can automatically pick up and return sleeves a of different specifications without manual intervention, greatly improving the level of automation and effectively improving work efficiency.

[0026] Preferably, of the seat 1 and the slide 3, one is fixedly mounted with a slide rail 6, and the other is fixedly mounted with a slider 7; the slider 7 slides in conjunction with the slide rail 6. In this embodiment, the slider 7 is fixed to the slide 3, and the slide rail 6 is fixed to the seat 1. Furthermore, there are two slide rails 6 and two sliders 7, with the two sliders 7 respectively installed at the two side edges of the slide 3. This structure ensures the stability and smoothness of the slide 3's translation.

[0027] Preferably, the sleeve fixing block 2 is arranged in multiple rows; the slide block 3 is a plate structure with a relief groove 3a to allow for the movement of the sleeve a.

[0028] By arranging the sleeves a in multiple rows, the quick-change mechanism can be made compact, reducing the travel of the external tightening gun when picking up and putting down the sleeves a, and accommodating a variety of sleeves a sizes for use.

[0029] Preferably, the limiting unit 5 is a U-shaped sheet structure with a notch 5a facing the corresponding sleeve fixing block 2, and it is fixed to the slide block 3 by screws.

[0030] Preferably, the base 1 is further equipped with buffer and limiting units 8 placed on both sides of the slide 3. The buffer and limiting units 8 can buffer and limit the slide 3 during the switching of the slide 3, reduce impact and improve positioning accuracy.

[0031] Preferably, such as Figure 2 As shown, the quick-change sleeve mechanism A also includes a protective cover 14 fixed relative to the base 1, which covers other components installed inside the base 1; the protective cover 14 has through holes 14a corresponding to each of the sleeve fixing blocks 2. The protective cover 14 can provide protection, preventing other components from entering, and preventing injury to people or objects when the quick-change sleeve mechanism A is in operation.

[0032] An automatic bolt tightening system, such as Figure 3 As shown, it includes the aforementioned quick-change sleeve mechanism A and a screw tightening module B. The screw tightening module B includes a screw tightening motor 10 and a sleeve connector 11, and the screw tightening motor 10 can drive the sleeve connector 11 to rotate. Furthermore, the screw tightening module B can be driven by an external drive mechanism (not shown in the figure) to move between the quick-change sleeve mechanism A and the working position, and can move the screw tightening module B closer to or further away from the quick-change sleeve mechanism A. The drive mechanism can be a Cartesian robot, an industrial manipulator, or the like.

[0033] Preferably, the screw tightening module B further includes a connecting seat 9 and a transition seat 12. The screw tightening motor 10 is fixed on the transition seat 12, and the transition seat 12 can slide relative to the connecting seat 9. A spring 13 is provided between the connecting seat 9 and the transition seat 12. The spring 13 applies a spring force to the transition seat 12, so that the transition seat 12 tends to move closer to the sleeve quick-change mechanism A.

[0034] In screw tightening module B, a spring 13 applies elastic force to the transition seat 12. When screw tightening module B removes sleeve a, the screw tightening motor 10 drives the sleeve connector 11 to rotate, and the spring 13 pushes the sleeve connector 11 to engage with sleeve a. After the sleeve connector 11 and sleeve a are engaged, increased force is required to disengage sleeve a from the sleeve connector 11.

[0035] During operation, when the screw tightening module B needs to remove the sleeve a, the drive mechanism moves the screw tightening module B, causing the sleeve connector 11 to move above the target sleeve in the sleeve quick-change mechanism A. Then, the drive mechanism moves the screw tightening module B closer to the sleeve quick-change mechanism A, so that the distance between the connecting seat 9 and the seat body 1 is equal to the preset distance. At this time, if the sleeve connector 11 and the target sleeve do not directly connect successfully, the spring 13 is compressed, controlling the screw tightening motor 10 to rotate slowly. The spring 13 can push the sleeve connector 11 to successfully connect with the target sleeve. Then, the screw tightening module B moves away from the sleeve quick-change mechanism A, and the sleeve connector 11 carries the sleeve a away from the sleeve connector 11.

[0036] When the screw tightening module B needs to return the sleeve a, the drive mechanism moves the screw tightening module B so that the sleeve connector 11 moves the sleeve a above the corresponding sleeve fixing block 2. Then, the drive mechanism moves the screw tightening module B closer to the sleeve quick-change mechanism A so that the distance between the connecting seat 9 and the seat 1 is equal to the preset distance. At this time, the screw tightening motor 10 is controlled to rotate slowly so that the sleeve a aligns with the corresponding sleeve fixing block 2. Then, the drive unit 4 drives the slide 3 to move horizontally so that all the limit units 5 switch to the limit state. At this time, the sleeve connector 11 is embedded in the notch 5a. As the screw tightening module B moves away from the sleeve quick-change mechanism A, the limit units 5 assist the sleeve a to disengage from the sleeve connector 11.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A quick-change sleeve mechanism (A), characterized in that, It includes a base (1), on which a plurality of sleeve fixing blocks (2) for placing sleeves (a) are fixedly installed; a slide (3) is also installed on the base (1), and a drive unit (4) for driving the slide (3) to translate relative to the base (1). The slide (3) is equipped with a limiting unit (5) corresponding to each of the sleeve fixing blocks (2); the translational movement of the slide (3) enables the limiting unit (5) to switch between a yielding state and a limiting state; in the yielding state, the limiting unit (5) does not affect the sleeve (a) from leaving the sleeve fixing block (2); in the limiting state, the limiting unit (5) can prevent the sleeve (a) from leaving the sleeve fixing block (2).

2. The sleeve quick-change mechanism (A) according to claim 1, characterized in that, Of the seat (1) and the slide (3), one is fixedly mounted with a slide rail (6), and the other is fixedly mounted with a slider (7); the slider (7) slides in cooperation with the slide rail (6).

3. The sleeve quick-change mechanism (A) according to claim 2, characterized in that, The sleeve fixing block (2) is arranged in multiple rows; the slide (3) is a plate structure with a relief groove (3a) to allow the movement of the sleeve (a).

4. The sleeve quick-change mechanism (A) according to claim 1, characterized in that, The limiting unit (5) is a U-shaped sheet structure with a notch (5a) facing the corresponding sleeve fixing block (2) and is fixed to the slide (3) by screws.

5. The sleeve quick-change mechanism (A) according to claim 1, characterized in that, The seat (1) is also equipped with buffer limiting units (8) placed on both sides of the slide (3).

6. An automatic bolt tightening system, characterized in that, It includes the quick-change sleeve mechanism (A) as described in any one of claims 1-5, and further includes a screw tightening module (B); the screw tightening module (B) includes a screw tightening motor (10) and a sleeve connector (11), wherein the screw tightening motor (10) is capable of driving the sleeve connector (11) to rotate.

7. The automatic bolt tightening system according to claim 6, characterized in that, The screw tightening module (B) also includes a connecting seat (9) and a transition seat (12). The screw tightening motor (10) is fixed on the transition seat (12), and the transition seat (12) can slide relative to the connecting seat (9). A spring (13) is provided between the connecting seat (9) and the transition seat (12). The spring (13) applies elastic force to the transition seat (12), so that the transition seat (12) tends to move closer to the sleeve quick-change mechanism (A).

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