Locking mechanism of workbench

Abstract

The utility model belongs to the technical field of circuit board processing equipment, and discloses a locking mechanism of a workbench, which comprises a blind rivet detachably connected to the workbench, a seat body and a driving mechanism, a locking groove is formed in the outer circumference of the blind rivet; the inner side of the seat body is provided with a containing space, a ball is placed in the containing space, and the ball has the activity amount of moving in the radial direction of the seat body in the containing space; and the driving mechanism is arranged in the seat body and drives the balls to move, so that the balls enter the locking grooves and are matched with the locking grooves. According to the utility model, the quick replacement of the workbench can be realized, and the influence on the final product yield caused by the positioning error of the workbench can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board processing equipment, in particular to a locking mechanism of a workbench. Background Art

[0002] At present, the processing equipment in the printed PCB circuit board needs to constantly replace and fix the printed circuit board during operation. Generally speaking, the printed circuit board is set on the workbench, which is equivalent to constantly replacing and fixing the workbench in the processing equipment, usually manually operated, so the replacement efficiency is low, the downtime is long, and the positioning accuracy is affected, which is not conducive to ensuring and improving the yield rate. Utility Model Content

[0003] In order to solve the above technical problems, the utility model discloses a locking mechanism for a workbench, which can realize the rapid replacement of the workbench and effectively prevent the positioning error of the workbench from affecting the final product yield.

[0004] The specific technical solution of the utility model is as follows:

[0005] A locking mechanism for a workbench, comprising:

[0006] A pull nail used for detachably connecting to a workbench, wherein the outer circumference of the pull nail is provided with a locking groove;

[0007] A seat body, wherein the inner side of the seat body has a containing space, wherein a ball is placed in the containing space, and wherein the ball has an amount of movement in the containing space along the radial direction of the seat body; and

[0008] The driving mechanism is arranged in the seat body, and the driving mechanism drives the ball to move so that the ball enters the locking groove and cooperates with the locking groove.

[0009] When the workbench is fixed, the ball is located in the locking groove. At this time, the driving mechanism prohibits the ball from escaping from the locking groove, so that the locking mechanism is in a locked state. Therefore, the rivet is fixed in the seat body, that is, the workbench is fixed in the processing equipment, and since the position of the seat body in the processing equipment is determined, the preset position of the workbench is determined. Therefore, when the workbench is fixed in the processing equipment, the preset processing accuracy can be guaranteed; when replacing the workbench, the driving mechanism acts in the opposite direction, and the ball withdraws from the locking groove. At this time, the rivet can be detached from the seat body, that is, the workbench can be removed or replaced; thereby achieving rapid replacement and precise positioning of the workbench.

[0010] Preferably, the driving mechanism comprises:

[0011] A locking ring, the locking ring slidingly cooperates with the seat body along the axial direction of the seat body so that the locking ring switches between a first position and a second position, and the locking ring has a power source for driving it to switch from the first position to the second position;

[0012] A return spring is disposed between the locking ring and the seat body; and

[0013] A motion platform, wherein the ball has a movable amount along the radial direction of the seat body on the motion platform;

[0014] In which, the power source drives the locking ring to switch from the first position to the second position, the return spring deforms and stores energy, and the ball withdraws from the locking groove, so that the locking mechanism is in a loosened state; when the power source is driven in reverse or turned off, the return spring releases the stored energy and pushes the locking ring to switch from the second position to the first position, so that the locking ring pushes the ball into the locking groove, and the locking mechanism is in a locked state.

[0015] The structure is highly compact and can avoid the driving mechanism having a large volume. The driving method is simple and can quickly provide power to the ball so that the ball quickly enters the locking groove. After the power source is reversed or turned off, the return spring releases the stored energy, causing the locking ring to loosen the ball, thereby causing the ball to exit the locking groove and the locking mechanism to be in a loosened state.

[0016] Preferably, the free end of the locking ring is provided with a slope 1 for pushing the ball to move.

[0017] Due to the structural characteristics of the ball and the accommodating space, there is a gap between the ball and the inner wall of the accommodating space. When the locking ring has a slope, it can extend from the gap into between the ball and the inner wall of the accommodating space, thereby realizing the radial movement of the ball along the seat body through the axial movement of the locking ring along the seat body.

[0018] Preferably, the accommodating space is formed between the moving platform and the seat body, and the diameter of the mouth of the accommodating space is smaller than the diameter of the ball.

[0019] Since the diameter of the mouth of the accommodating space is smaller than the diameter of the ball, the ball can be prevented from escaping from the accommodating space when the locking mechanism is in the released position, that is, the ball can be prevented from being lost.

[0020] Preferably, the groove wall of the locking groove has a second inclined surface, so that when the power source drives the locking ring to switch from the first position to the second position, the ball can slide out of the locking groove from the second inclined surface due to its own gravity.

[0021] The arrangement of the second inclined surface enables the ball to slide downward along the extension direction of the second inclined surface after the reset spring releases the stored energy, thereby exiting the locking groove, thereby placing the locking mechanism in a released state.

[0022] Preferably, it also includes:

[0023] A spring seat, the spring seat being positioned and arranged inside the seat body;

[0024] Wherein, the return spring is arranged between the spring seat and the locking ring.

[0025] The spring seat provides a state condition for the return spring and can simplify the seat body structure.

[0026] Preferably, the spring seat and the locking ring are provided with groove part 1 and groove part 2 respectively, and the return spring is arranged in the assembly space formed by groove part 1 and groove part 2;

[0027] One of the groove part 1 and the groove part 2 is provided with a connecting column for sleeve-mounting a reset spring.

[0028] The groove part 1, the groove part 2, and the connecting column can provide stability for the deformation of the return spring, thereby preventing the return spring from being skewed during the deformation process, thereby affecting the driving efficiency and the return efficiency.

[0029] Preferably, the spring seat is provided with a first step portion, and the seat body is provided with a second step portion cooperating with the first step portion.

[0030] The cooperation between the step portion 1 and the step portion 2 can realize the installation and positioning of the spring seat in the seat body, thereby simplifying the structure.

[0031] Preferably, the spring seat is provided with a platform portion, and the platform portion is configured as a motion platform.

[0032] The arrangement of the platform portion can avoid the need for additional components, thereby achieving structural optimization.

[0033] Preferably, the locking groove is configured as an annular groove arranged along the circumference of the rivet.

[0034] The annular groove can avoid driving errors and prevent the balls from being unable to enter the independent grooves, thereby preventing locking from being achieved.

[0035] Compared with the prior art, the utility model can realize the rapid replacement and positioning of the workbench. Through the cooperation of the ball and the locking groove, the rivet can no longer move along the axial direction of the seat body when the locking mechanism is in the locked state. The structure is simple, compact and efficient, thereby improving the process efficiency of the processing equipment and effectively reducing the downtime. In addition, since the positioning position remains unchanged after the workbench is replaced, the positioning accuracy can be guaranteed to ensure the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 An exploded view of an embodiment of the utility model;

[0037] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0038] Figure 3 It is a schematic diagram of an embodiment of the utility model in a locked state;

[0039] Figure 4 for Figure 2 A magnified image of point A;

[0040] Figure 5 It is a schematic diagram of another driving mechanism in an embodiment of the utility model.

[0041] In the figure: 1-pull nail; 2-seat body; 3-locking groove; 4-ball; 5-thread; 6-kit; 7-inclined surface 2; 8-locking ring; 9-reset spring; 10-moving platform; 11-inclined surface 1; 12-telescopic rod; 13-cylinder; 14-spring seat; 15-step part 1; 16-step part 2; 17-base 1; 18-base 2; 19-groove part 1; 20-groove part 2; 21-connecting column. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0043] like Figure 1 to Figure 4 As shown, a locking mechanism of a workbench includes a rivet 1 for detachably connecting to the workbench, a base body 2, and a driving mechanism; the outer circumference of the rivet 1 is provided with a locking groove 3; the inner side of the base body 2 has an accommodating space, in which a ball 4 is placed, and the ball 4 has an active amount to move radially along the base body 2 in the accommodating space; the driving mechanism is arranged in the base body 2, and the driving mechanism drives the ball 4 to move so that the ball 4 enters the locking groove 3 and cooperates with the locking groove 3.

[0044] In this embodiment, the seat body 2 is partially fixedly arranged in the processing equipment, so the hole on the workbench connected to the rivet 1 is a positioning hole, which can not only position the workbench in the processing equipment, but also make the preset positioning accuracy of the workbench in the processing equipment consistent, avoiding positioning errors after replacing the workbench. It can be seen that multiple seats 2 are arranged in the processing equipment, so the stability placement requirements of the workbench can be met through multiple locking mechanisms. In this embodiment, a thread 5 is provided at one end of the rivet 1, through which a detachable connection with the workbench can be achieved, so that the workbench can be connected to the base body 2 through the rivet 1; a sleeve 6 is provided at the end of the rivet 1 away from the thread 5, and the sleeve 6 is sleeved on the screw, and the sleeve 6 and the column head of the screw are positioned and assembled through an annular inclined surface structure, that is, the groove wall of the locking groove 3 has an inclined surface 2 7, so that when the power source drives the locking ring 8 to switch from the first position to the second position, the ball 4 can slide out of the locking groove 3 from the inclined surface 2 7 by its own gravity. Furthermore, the locking groove 3 is configured as an annular groove arranged along the circumference of the rivet 1. Therefore, when the driving mechanism drives the ball 4 to move, the ball 4 moves into the locking groove 3 configured as an annular groove, and slides upward along the second inclined surface 7 for a distance, and the position of the ball 4 in the locking groove 3 is maintained by the driving mechanism. However, when the driving mechanism reverses or is closed, the ball 4 can roll along the second inclined surface 7 and thus roll out of the locking groove 3. At this time, the rivet 1 can be separated from the base body 2, thereby realizing the replacement of the workbench, thereby realizing the switching of the locking mechanism from the locked state to the released state.

[0045] like Figure 1 to Figure 3As shown, in this embodiment, the driving mechanism includes a locking ring 8, a return spring 9 and a motion platform 10; the locking ring 8 slides with the seat body 2 along the axial direction of the seat body 2 so that the locking ring 8 switches between the first position and the second position, and the locking ring 8 has a power source for driving it to switch from the first position to the second position; the return spring 9 is arranged between the locking ring 8 and the seat body 2; the ball 4 has a movable amount along the radial direction of the seat body 2 on the motion platform 10; the power source drives the locking ring 8 to switch from the first position to the second position, the return spring 9 deforms and stores energy, and the ball 4 withdraws from the locking groove 3, so that the locking mechanism is in a loose state; when the power source is turned off, the return spring 9 releases the stored energy, and pushes the locking ring 8 to switch from the second position to the first position, so that the locking ring 8 pushes the ball 4 into the locking groove 3, so that the locking mechanism is in a locked state. The power source in this embodiment uses compressed air, and a channel for introducing compressed air is provided on the seat body 2, and the driving of the locking ring 8 is achieved by introducing compressed air through the channel. In the initial state, the return spring 9 drives the ball 4 to be clamped in the locking groove 3 to maintain the locking state of the locking mechanism; when the compressed air enters the seat body 2 through the channel, the compressed air enters the space between the moving platform 10 and the seat body 2, and the locking ring 8 moves downward at this time, compressing the return spring 9, so that the return spring 9 stores energy, and the ball 4 rolls out of the locking groove 3 along the inclined surface 7. At this time, the locking mechanism is in a relaxed state, so that the rivet 1 can be separated from the seat body 2; after replacing the workbench, the rivet 1 connected to the workbench is extended into the seat body 2, and the power source is turned off, then the return spring 9 releases the stored energy, and the locking ring 8 moves upward, and then the locking ring 8 can push the ball 4 to roll into the locking groove 3, thereby locking the rivet 1, and after the locking is completed, the return spring 9 maintains the state, continuously pressing the ball 4 against the locking groove 3, thereby maintaining the continuity and stability of the locking state. Therefore, when the compressed air enters the accommodating space, it applies positive pressure to the locking ring 8, thereby enabling the energy storage of the reset spring 9. When the power source is turned off, the locking ring 8 is not subjected to the force of the compressed air, so the locking ring 8 moves upward under the action of the reset spring 9 to drive the ball 4 to move and keep the ball 4 pressed against the locking groove 3.

[0046] like Figure 2 and Figure 3As shown, further, the free end of the locking ring 8 is provided with an inclined surface 11 for pushing the ball 4 to move. When the locking ring 8 pushes the ball 4, the locking ring 8 moves from bottom to top under the action of the reset spring 9, and the motion interference between the locking ring 8 and the ball 4 is eliminated by the inclined surface 11, and the free end of the locking ring 8 is gradually enlarged in the extension direction from bottom to top by the inclined surface 11, so that the ball 4 can be gradually pushed to move upward along the inclined surface 2 7, and the ball 4 is kept tightly against the locking groove 3 at the maximum length, so as to better complete the realization and maintenance of the locking state. In this embodiment, when the locking mechanism is in a relaxed state, the ball 4 should be prevented from falling out of the accommodating space to avoid the loss of the ball 4. Therefore, in this embodiment, the accommodating space is formed between the motion platform 10 and the seat body 2, and the mouth diameter of the accommodating space is smaller than the diameter of the ball 4. Thus, when the locking mechanism is in a relaxed state, the mouth of the space that can accommodate the ball 4 is limited in motion, preventing the ball 4 from escaping from the space and falling off. At the same time, on the basis of setting the inclined surface 11 and the inclined surface 2 7, the inclined surface 1 11 of the locking ring 8 generates a radial force acting on the ball 4, and the spherical surface of the ball 4 acts on the inclined surface 2 7 of the rivet 1, so that the ball 4 presses the rivet 1 tightly in the locked state, thereby eliminating the gap between the rivet 1 and the seat 2, forming a precise positioning

[0047] In some other technical solutions of this embodiment, such as Figure 5 As shown, the driving mechanism includes a telescopic rod 12 and a cylinder 13, the ball 4 is arranged at the free end of the telescopic rod 12, and the cylinder 13 drives the telescopic rod 12 to reciprocate along the radial direction of the seat body 2 to drive the ball 4 to enter or exit the locking groove 3, or the telescopic rod 12 and the cylinder 13 can also be replaced by a motor and a rod. It can be seen that in this embodiment, the driving mechanism has a large installation volume in the radial direction of the seat body 2, and for the structure, it will be configured more complex to match the actual structure of the driving mechanism. Therefore, compared with this technical solution, this embodiment optimizes the structure well by converting the axial motion into the radial motion, saves the installation volume, and has higher practicality. In the technical solution, the reset spring 9 can also be not provided, and the motor or the telescopic rod 12 is directly driven to reciprocate in the axial direction to realize the switching of the locking mechanism between the locked state and the relaxed state, but for this embodiment, the assembly length in the axial direction of the seat body 2 is also large, which is not conducive to miniaturization and simplification of the assembly process.

[0048] It can be seen that in some embodiments, the driving mechanism can drive the ball 4 into the locking groove 3, and in other embodiments, the driving mechanism can not only drive the ball 4 into the locking groove 3, but also drive the ball 4 out of the locking groove 3.

[0049] In this embodiment, a spring seat 14 is further included, and the spring seat 14 is positioned inside the seat body 2; the return spring 9 is arranged between the spring seat 14 and the locking ring 8. Figure 4 As shown, the spring seat 14 is provided with a step portion 15, and the seat body 2 is provided with a step portion 2 16 matched with the step portion 15. The spring seat 14 can achieve positioning and matching through the step portion 15 and the step portion 2 16. In this embodiment, the spring seat 14 is provided with a platform portion, and the platform portion is configured as a motion platform 10. Therefore, further, the seat body 2 includes a base 17 and a base 2 18, and the spring seat 14 is arranged in the base 2 18. After the reset spring 9 is arranged on the base 2 18, the locking ring 8 is assembled to the base 2 18, and then the ball 4 is placed on the platform portion, and finally the base 17 is buckled on the base 2 18. Therefore, on the basis of only having a positioning structure between the spring seat 14 and the base 2 18, the assembly stability of the spring seat 14 in the base 2 18 can also be achieved. In addition, in this embodiment, the spring seat 14 and the locking ring 8 are correspondingly provided with a groove portion 19 and a groove portion 20, and the reset spring 9 is arranged in the assembly space formed by the groove portion 19 and the groove portion 20; one of the groove portion 19 and the groove portion 20 is provided with a connecting column 21 for sleeve-mounting the reset spring 9. Specifically, the connecting column 21 is arranged in the groove portion 19, so that the reset spring 9 can be assembled more quickly.

[0050] Therefore, when using this embodiment, the rivet 1 is installed on the workbench that fixes the printed circuit board; the steel ball is installed in the accommodation space formed between the seat body 2, the locking ring 8, and the spring seat 14, and the reset spring 9 is installed between the locking ring 8 and the spring seat 14. The rivet 1 is fixed on the workbench. When the workbench moves to the top of the rivet 1 and aligns with the positioning hole of the seat body 2, the rivet 1 moves downward along the axial direction of the hole. Before or at the same time, compressed air is introduced to move the locking ring 8 downward, so that the ball 4 avoids the mouth of the accommodation space, so that the rivet 1 can move smoothly downward into the above-mentioned positioning hole. After the rivet 1 moves down to the right position, the power source is turned off, and the compressed air is stopped from being supplied. The reset spring 9 resets the steel ball to lock the rivet 1, and then locks the workbench. In this way, the workbench can be quickly replaced, and the problem of positioning accuracy is solved, which is convenient for users to use.

[0051] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A locking mechanism for a workbench, characterized in that: include: A pull nail used for detachably connecting to a workbench, wherein the outer circumference of the pull nail is provided with a locking groove; A seat body, wherein the inner side of the seat body has a containing space, wherein a ball is placed in the containing space, and wherein the ball has an amount of movement in the containing space along the radial direction of the seat body; as well as The driving mechanism is arranged in the seat body, and the driving mechanism drives the ball to move so that the ball enters the locking groove and cooperates with the locking groove.

2. A locking mechanism for a workbench as claimed in claim 1, characterized in that: The driving mechanism comprises: A locking ring, the locking ring slidingly cooperates with the seat body along the axial direction of the seat body so that the locking ring switches between a first position and a second position, and the locking ring has a power source for driving it to switch from the first position to the second position; A return spring is disposed between the locking ring and the seat body; and A motion platform, wherein the ball has a movable amount along the radial direction of the seat body on the motion platform; In which, the power source drives the locking ring to switch from the first position to the second position, the return spring deforms and stores energy, and the ball withdraws from the locking groove, so that the locking mechanism is in a loosened state; when the power source is turned off, the return spring releases the stored energy, pushing the locking ring to switch from the second position to the first position, so that the locking ring pushes the ball into the locking groove, and the locking mechanism is in a locked state.

3. A locking mechanism for a workbench as claimed in claim 2, characterized in that: The free end of the locking ring is provided with an inclined surface 1 for pushing the ball to move.

4. A locking mechanism for a workbench as claimed in claim 2, characterized in that: The accommodating space is formed between the moving platform and the seat body, and the diameter of the mouth of the accommodating space is smaller than the diameter of the ball.

5. The locking mechanism of a workbench as claimed in claim 2, characterized in that: The groove wall of the locking groove has a second inclined surface, so that when the power source drives the locking ring to switch from the first position to the second position, the ball can slide out of the locking groove from the second inclined surface due to its own gravity.

6. A locking mechanism for a workbench as claimed in claim 2, characterized in that: Also includes: A spring seat, the spring seat being positioned and arranged inside the seat body; Wherein, the return spring is arranged between the spring seat and the locking ring.

7. A locking mechanism for a workbench as claimed in claim 6, characterized in that: The spring seat and the locking ring are provided with groove part 1 and groove part 2 respectively, and the return spring is arranged in the assembly space formed by groove part 1 and groove part 2; One of the groove part 1 and the groove part 2 is provided with a connecting column for sleeve-mounting a reset spring.

8. The locking mechanism of a workbench as claimed in claim 6, characterized in that: The spring seat is provided with a first step portion, and the seat body is provided with a second step portion matched with the first step portion.

9. The locking mechanism of a workbench as claimed in claim 6, characterized in that: The spring seat is provided with a platform portion, and the platform portion is configured as a motion platform.

10. The locking mechanism of a workbench according to claim 1, characterized in that: The locking groove is configured as an annular groove arranged along the circumference of the rivet.

Images