Pneumatic assembly line, pneumatic clamping jaw and accidental opening prevention mechanism of pneumatic clamping jaw
By designing a fixed restriction device and an adjustable position adjustment device on the pneumatic jaw, the problem of high machining accuracy in the prior art is solved, and the precise adjustment of the pneumatic jaw anti-unintentional opening mechanism is realized to ensure safe handling of the workpiece.
Patent Information
- Application Number
- CN202420833347.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-19
AI Technical Summary
The anti-accident opening mechanism of the existing pneumatic jaws requires high machining accuracy and difficult assembly and commissioning. It lacks position adjustment links, which makes it easy for the pin shaft to be unable to be inserted into the positioning sleeve, resulting in the risk of workpiece falling.
An anti-unintentional opening mechanism of pneumatic jaws including a fixed restriction device and an adjustable position adjustment device is designed. Position adjustment is achieved through the cylinder pin structure and drive device to ensure that the pin shaft and the pneumatic jaw are closely fitted, reducing the machining accuracy. Requirements.
It effectively reduces the machining accuracy requirements of pneumatic jaws, ensures that the workpieces should be prevented from falling off when the air pressure is insufficient or the air is cut off, and has a simple structure, convenient use, and is easy to promote.
Smart Images
Figure CN222181026U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of workpiece handling in a pneumatic assembly line, and more specifically, to a pneumatic assembly line, a pneumatic clamp and a mechanism for preventing accidental opening thereof. Background Art
[0002] In the pneumatic assembly line, in order to prevent the pneumatic gripper from being out of air or insufficient air pressure during the handling process, which may lead to insufficient clamping force of the cylinder and then the workpiece falling, it is necessary to add an anti-accidental opening mechanism to the pneumatic gripper. The existing anti-accidental opening mechanism adopts a cylinder latch structure, such as Figure 1 As shown, before the pneumatic gripper starts to carry the workpiece, the latch shaft Z in the cylinder latch mechanism is inserted into the positioning sleeve T on the pneumatic gripper; during the carrying process, when the pneumatic gripper is short of air pressure or the air is cut off, the latch shaft Z is always inserted in the positioning sleeve T, thereby limiting the movement of the pneumatic gripper in the opening direction, so that the workpiece will not fall due to the accidental opening of the pneumatic gripper.
[0003] The anti-accidental opening mechanism of the pneumatic clamp has high requirements on the processing accuracy of the pneumatic clamp, and the assembly and debugging are difficult. In addition, due to the lack of a position adjustment link, it is easy for the pin shaft Z to fail to be inserted into the positioning sleeve T.
[0004] Therefore, how to improve the anti-accidental opening mechanism of the existing pneumatic clamp to reduce the requirements for the processing accuracy of the pneumatic clamp becomes a technical problem that needs to be solved in this application. Utility Model Content
[0005] In view of this, the present application proposes an anti-accidental opening mechanism for a pneumatic clamp, which adds a position adjustment device and can solve the problem of high processing accuracy requirements of existing pneumatic clamps.
[0006] According to the technical solution of the present application, a mechanism for preventing accidental opening of a pneumatic clamp is proposed, comprising a limiting device fixedly arranged on the pneumatic clamp and a position adjustment device movable along the opening and closing direction of the pneumatic clamp; the limiting device is used to limit the movement of the position adjustment device along the opening direction of the pneumatic clamp, and the position adjustment device is used to adjust its own position with the limiting device, and on the basis of the close fit between the two, the position adjustment device is connected to the pneumatic clamp.
[0007] Preferably, the limiting device includes a cylinder latch structure, and the cylinder latch structure includes a latch cylinder and a latch shaft; the latch shaft can extend or retract the cylinder latch structure under the drive of the latch cylinder, and the latch shaft can limit the movement of the position adjustment device along the opening direction of the pneumatic clamp when the cylinder latch structure is extended; the position adjustment device is used to adjust its own position and the latch shaft extending from the cylinder latch structure, and on the basis of the close fit between the two, the position adjustment device is connected to the pneumatic clamp.
[0008] Preferably, the position adjustment device includes a block and a driving device for driving the block to move along the opening and closing direction of the pneumatic clamp; the block can be driven by the driving device to move along the opening direction of the pneumatic clamp to closely fit the pin shaft extending out of the cylinder pin structure, and connect the block to the pneumatic clamp.
[0009] Preferably, the driving device comprises a push-pull block and a connecting bolt, the stopper is provided with a threaded hole matched with the connecting bolt, and the connecting bolt passes through the push-pull block and is connected to the stopper.
[0010] The cylinder latch structure also includes a guide sleeve, and the latch shaft can extend out of or retract into the cylinder latch structure along the guide sleeve under the drive of the latch cylinder.
[0011] In addition, the present application also proposes a pneumatic clamp, which includes the pneumatic clamp's anti-accidental opening mechanism described above.
[0012] Preferably, the pneumatic clamp comprises a plurality of anti-accidental opening mechanisms of the pneumatic clamp corresponding to different sizes of workpieces.
[0013] Preferably, the pneumatic clamp also includes a clamping cylinder, a movable clamping arm and a fixed clamping arm, the clamping cylinder is used to drive the pneumatic clamp and provide clamping force for the pneumatic clamp, the movable clamping arm is used to open or close the pneumatic clamp under the drive of the clamping cylinder, and the fixed clamping arm is installed on the movable clamping arm and is used to clamp the workpiece under the action of the clamping force provided by the clamping cylinder.
[0014] Preferably, the pneumatic clamp further comprises a connecting flange, and the pneumatic clamp is connected to a control device of the pneumatic clamp via the connecting flange.
[0015] According to another aspect of the present application, a pneumatic assembly line is also provided, and the pneumatic assembly line includes the pneumatic clamp described above.
[0016] According to the technical solution of the present application, a new type of pneumatic clamping jaws anti-accidental opening structure is provided, and the new type of pneumatic clamping jaws anti-accidental opening structure adds a position adjustment device, so that the operator can adjust the relative position relationship between the pneumatic clamping jaws anti-accidental opening mechanism and the pneumatic clamping jaws according to the actual situation after the pneumatic clamping jaws clamp the workpiece, thereby reducing the requirements for the processing accuracy of the pneumatic clamping jaws.
[0017] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:
[0019] Figure 1 It is an overall schematic diagram of an existing pneumatic gripper;
[0020] Figure 2 It is an overall schematic diagram of a pneumatic clamp according to a preferred embodiment of the present application;
[0021] Figure 3 for Figure 2 Schematic diagram of the anti-accidental opening mechanism of the pneumatic gripper shown. DETAILED DESCRIPTION
[0022] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.
[0023] In order to solve the problem that the existing anti-accidental opening mechanism of pneumatic jaws has high requirements on the processing accuracy of pneumatic jaws, the present application proposes a new anti-accidental opening mechanism of pneumatic jaws, and the new anti-accidental opening mechanism of pneumatic jaws includes a limiting device 10 and a position adjustment device 20; wherein, the limiting device 10 is fixedly arranged on the pneumatic jaws, and is used to limit the movement of the position adjustment device 20 along the opening direction of the pneumatic jaws, and the position adjustment device 20 can move along the opening and closing direction of the pneumatic jaws, and is used to adjust its own position with the limiting device 10, and is connected to the pneumatic jaws on the basis of the close fit between the two.
[0024] Different from the previous anti-accidental opening mechanism of the pneumatic clamp, the anti-accidental opening mechanism of the pneumatic clamp of the present application does not limit the movement of the pneumatic clamp in the opening direction by directly inserting the pin shaft Z into the positioning sleeve T of the pneumatic clamp, but indirectly limits the movement of the pneumatic clamp in the opening direction by limiting the movement of the position adjustment device 20 connected to the pneumatic clamp along the opening direction of the pneumatic clamp.
[0025] Specifically, after the pneumatic jaws clamp the workpiece, the limiting device 10 starts to work to limit the position adjustment device 20 from moving in the opening direction of the pneumatic jaws; at this time, before using the pneumatic jaws to transport the workpiece, it is necessary to adjust the position relationship between the position adjustment device 20 and the limiting device 10 as needed to ensure that the position adjustment device 20 can be tightly attached to the limiting device 10, and then the position adjustment device 20 is reliably connected to the pneumatic jaws; there are many ways to achieve a reliable connection between the position adjustment device 20 and the pneumatic jaws. Based on the principle of simplicity and effectiveness, the position adjustment device 20 and the pneumatic jaws can be connected together using screws. Since the position adjustment device 20 is connected to the pneumatic jaws, the limiting device 10 can indirectly limit the movement of the pneumatic jaws in the opening direction by directly limiting the movement of the position adjustment device 20 in the opening direction of the pneumatic jaws.
[0026] In this way, during the process of transporting the workpiece, even if there is an unexpected situation such as insufficient air pressure or sudden air failure causing the pneumatic clamp to lose its clamping force, the pneumatic clamp will not open and the workpiece will not fall because the anti-accidental opening mechanism of the pneumatic clamp limits the movement of the pneumatic clamp in the opening direction.
[0027] There are many ways to set the limiting device 10. Based on the principles of simplicity, reliability and effectiveness, the limiting device 10 can be set to include a cylinder latch structure based on the structural characteristics of the existing pneumatic clamp's anti-accidental opening mechanism. Further, the cylinder latch structure can be set to include a latch cylinder 11 and a latch shaft 12; wherein the latch shaft 12 can extend or retract the cylinder latch structure under the drive of the latch cylinder 11; when the pneumatic clamp clamps the workpiece, the latch shaft 12 extends out of the cylinder latch structure under the drive of the latch cylinder 11, blocking the movement of the position adjustment device 20 along the opening direction of the pneumatic clamp, and then adjust the position relationship between the position adjustment device 20 and the latch shaft 12 as needed to ensure that the position adjustment device 20 fits tightly on the latch shaft 12, and then reliably connect the position adjustment device 20 to the pneumatic clamp.
[0028] The position adjustment device 20 can be set into a variety of possible forms as needed. Also based on the principle of simplicity and effectiveness, the position adjustment device 20 can be further set to include a block 21 and a driving device for driving the block 21 to move along the opening and closing direction of the pneumatic clamp; when the pneumatic clamp clamps the workpiece, the latch shaft 12 extends out of the cylinder latch structure under the drive of the latch cylinder 11, blocking the movement route of the position adjustment device 20 along the opening direction of the pneumatic clamp. At this time, observe whether the latch shaft 12 and the block 21 are tightly fitted together. If there is a gap between the two, the driving device can be controlled to drive the block 21 to move along the opening direction of the pneumatic clamp (i.e., toward the latch shaft 12) to a position close to the latch shaft 12, and then on this basis, the block 21 and the pneumatic clamp are reliably connected together.
[0029] The driving device for driving the stopper 21 can be configured as an electric automatic control device or a mechanical manual control device as required. In line with the principle of saving manufacturing costs, the driving device can be configured as a mechanical manual control device; specifically, the driving device can be configured to include a push-pull block 22 and a connecting bolt 23; wherein, the bolt rod of the connecting bolt 23 runs through the entire push-pull block 22, and the bolt rod is respectively connected with a nut and a fastening nut at both ends of the push-pull block 22; at the same time, a threaded hole matching the connecting bolt 23 is provided on the stopper 21, and the bolt rod of the connecting bolt 23 continues to be threadedly connected with the stopper 21 after passing through the push-pull block 22.
[0030] like Figure 3 As shown, after the pneumatic clamp clamps the workpiece, the latch shaft 12 extends out of the cylinder latch structure under the drive of the latch cylinder 11, blocking the movement path of the position adjustment device 20 along the opening direction of the pneumatic clamp, and then the position relationship between the stop block 21 and the latch shaft 12 is adjusted as needed to ensure that the stop block 21 fits tightly on the latch shaft 12; specifically, when a gap is found between the stop block 21 and the latch shaft 12, the nut of the connecting bolt 23 is tightened so that the push-pull block 22 can push the stop block 21 to move in the opening direction of the pneumatic clamp (i.e., toward the direction of the latch shaft 12), and finally make the stop block 21 fit tightly on the latch shaft 12, and then reliably connect the stop block 21 to the pneumatic clamp.
[0031] Furthermore, in order to ensure that the latch shaft 12 can accurately extend and retract into the cylinder latch structure, and also to reduce the friction between the latch shaft 12 and the inner wall of the latch cylinder 11, thereby extending the service life of the cylinder latch structure, preferably, the cylinder latch structure also includes a guide sleeve 13, and the latch shaft 12 can extend or retract into the cylinder latch structure along the guide sleeve 13 under the drive of the latch cylinder 11.
[0032] In addition, the present application also proposes a pneumatic clamp, which includes the pneumatic clamp's anti-accidental opening mechanism described above.
[0033] It is not difficult to understand that when the pneumatic clamp is clamping workpieces of different sizes, different pneumatic clamp anti-accidental opening mechanisms are required to provide protection. In order to meet the requirement that the same pneumatic clamp can achieve reliable transportation when clamping workpieces of different sizes, preferably, the pneumatic clamp is configured to include multiple pneumatic clamp anti-accidental opening mechanisms corresponding to workpieces of different sizes.
[0034] On this basis, in order to meet the requirements of clamping workpieces of different shapes, the pneumatic clamp can be set into a variety of possible forms according to needs. Preferably, Figure 2 As shown, the pneumatic clamp is configured to include a clamping cylinder 30, a movable clamping arm 40 and a fixed clamping arm 50; wherein the clamping cylinder 30 is used to drive the pneumatic clamp and provide clamping force for the pneumatic clamp, the movable clamping arm 40 can be used to open or close the pneumatic clamp under the drive of the clamping cylinder 30, and the fixed clamping arm 50 is installed on the movable clamping arm 40 for directly contacting the workpiece and clamping the workpiece under the action of the clamping force provided by the clamping cylinder 30.
[0035] In order to facilitate the control of the pneumatic gripper, the pneumatic gripper can be further configured to include a connecting flange 60, and the pneumatic gripper is connected to the control device of the pneumatic gripper through the connecting flange 60. The control device of the pneumatic gripper can be configured in various possible forms as required, such as an automated control panel or a robot, etc.
[0036] According to another aspect of the present application, a pneumatic assembly line is also provided, and the pneumatic assembly line includes the pneumatic clamp described above.
[0037] According to the technical solution of the present application, a pneumatic assembly line, a pneumatic clamp and its anti-accidental opening mechanism are proposed. Different from the past, the anti-accidental opening structure of the pneumatic clamp has a position adjustment device, so that the operator can adjust the relative position relationship between the anti-accidental opening mechanism of the pneumatic clamp and the pneumatic clamp according to the actual situation after the pneumatic clamp clamps the workpiece, thereby reducing the requirements for the processing accuracy of the pneumatic clamp. In addition, the anti-accidental opening structure of the new pneumatic clamp also has the characteristics of simple structure and easy use, which is easy to promote and use.
[0038] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.
[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.
[0040] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.
Claims
1. The pneumatic gripper has an anti-accidental opening mechanism, characterized in that: It comprises a limiting device (10) fixedly arranged on the pneumatic clamp and a position adjusting device (20) movable along the opening and closing direction of the pneumatic clamp; the limiting device (10) is used to limit the movement of the position adjusting device (20) along the opening direction of the pneumatic clamp, and the position adjusting device (20) is used to adjust the position of itself and the limiting device (10), and on the basis of the close fit between the two, the position adjusting device (20) is connected to the pneumatic clamp.
2. The anti-accidental opening mechanism of the pneumatic clamp according to claim 1, characterized in that: The limiting device (10) comprises a cylinder latch structure, wherein the cylinder latch structure comprises a latch cylinder (11) and a latch shaft (12); the latch shaft (12) can extend or retract the cylinder latch structure under the drive of the latch cylinder (11), and the latch shaft (12) can limit the movement of the position adjustment device (20) along the opening direction of the pneumatic clamp when the cylinder latch structure is extended; the position adjustment device (20) is used to adjust the position of itself and the latch shaft (12) extending from the cylinder latch structure, and connect the position adjustment device (20) to the pneumatic clamp on the basis of the close fit between the two.
3. The anti-accidental opening mechanism of the pneumatic clamp according to claim 2, characterized in that: The position adjustment device (20) comprises a stopper (21) and a driving device for driving the stopper (21) to move along the opening and closing direction of the pneumatic clamping jaw; the stopper (21) can be driven by the driving device to move along the opening direction of the pneumatic clamping jaw to closely contact the latch shaft (12) extending out of the cylinder latch structure, and the stopper (21) is connected to the pneumatic clamping jaw.
4. The anti-accidental opening mechanism of the pneumatic clamp according to claim 3, characterized in that: The driving device comprises a push-pull block (22) and a connecting bolt (23); the stopper (21) is provided with a threaded hole matched with the connecting bolt (23); the connecting bolt (23) passes through the push-pull block (22) and is connected to the stopper (21).
5. The anti-accidental opening mechanism of the pneumatic clamp according to any one of claims 2 to 4, characterized in that: The cylinder latch structure also includes a guide sleeve (13), and the latch shaft (12) can be extended or retracted into the cylinder latch structure along the guide sleeve (13) under the drive of the latch cylinder (11).
6. Pneumatic gripper, characterized in that: The pneumatic clamp comprises the anti-accidental opening mechanism of the pneumatic clamp according to any one of claims 1 to 5.
7. The pneumatic gripper according to claim 6, characterized in that: The pneumatic clamp comprises a plurality of pneumatic clamps corresponding to different workpiece sizes to prevent accidental opening of the clamp.
8. The pneumatic gripper according to claim 7, characterized in that: The pneumatic clamp further comprises a clamping cylinder (30), a movable clamping arm (40) and a fixed clamping arm (50); the clamping cylinder (30) is used to drive the pneumatic clamp and provide a clamping force for the pneumatic clamp; the movable clamping arm (40) is used to open or close the pneumatic clamp under the drive of the clamping cylinder (30); and the fixed clamping arm (50) is mounted on the movable clamping arm (40) and is used to clamp a workpiece under the action of the clamping force provided by the clamping cylinder (30).
9. The pneumatic gripper according to any one of claims 6 to 8, characterized in that: The pneumatic clamp further comprises a connecting flange (60), and the pneumatic clamp is connected to a control device of the pneumatic clamp via the connecting flange (60).
10. Pneumatic assembly line, characterized in that: The pneumatic assembly line comprises the pneumatic gripper as described in any one of claims 6-9.