Multi-hole independent self-positioning clamping tool

Abstract

The invention relates to a multi-hole independent self-positioning clamping tool. When an existing jig tool is matched with automatic production, pneumatic elements are used for assisting in positioning and clamping product clamping, the number of electrical elements is large, cost is increased, and occupied space is large. The device comprises a main body positioning plate, a plurality of product positioning blocks are arranged on the main body positioning plate, and the device is characterized in that a Z-direction sliding block which is driven by a driving mechanism to ascend and descend is arranged behind the product positioning blocks, and a Z-direction pressing plate connected to the upper portion of the Z-direction sliding block is located above the product positioning blocks; a Y-direction pushing block and an X-direction pushing block are arranged on the two adjacent sides of the periphery of the product positioning block respectively, and the Z-direction sliding block moves to control the Y-direction pushing block and the X-direction pushing block to move in and out in a linkage mode. Each product can be independently positioned and clamped, and meanwhile, the occupied space is reduced, so that the layout of the number of the products is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of multi-point rapid clamping and positioning of products, and is particularly suitable for a multi-point independent positioning clamping tool used under the conditions of short processing time, large product production quantity and high product positioning accuracy. Background Art The current jigs and fixtures use pneumatic components to assist in positioning and clamping the products when they are used in automatic production. However, they have the following defects during use: 1. Each action is controlled by a control unit, resulting in an uncompact rhythm, a large number of electrical components, and increased costs. 2. A large space is required, and the number of products clamped each time is small, which leads to a high frequency of tool changes during the processing, which prolongs the processing time, resulting in low machine utilization, and directly increases costs. Summary of the invention

[0002] In view of the problems existing in the prior art, the present invention provides a multi-point independent positioning and clamping tooling, so that each product can be independently positioned and clamped, while also reducing the occupied space, thereby increasing the number of product layouts, and achieving a tooling fixture structure design that can quickly position and clamp a large number of products stably.

[0003] The present invention adopts the following technical scheme: a multi-point independent positioning and clamping tooling, including a main body positioning plate, a plurality of product positioning blocks are arranged on the main body positioning plate, a Z-direction slider driven by a driving mechanism to perform lifting and lowering actions is arranged behind the product positioning block, a Z-direction pressure plate connected to the upper part of the Z-direction slider is located above the product positioning block, and a Y-direction push block and an X-direction push block are respectively arranged on two adjacent sides of the periphery of the product positioning block, and the movement linkage of the Z-direction slider controls the entry and exit actions of the Y-direction push block and the X-direction push block.

[0004] Preferably, the Z-direction slider forms a guide protrusion at the front center, the Y-direction push block is arranged on a Y-direction slider, and the rear of the Y-direction slider is arranged on a spring stopper, and the spring stopper moves forward after contacting the protrusion.

[0005] Preferably, the spring stopper forms spring accommodating grooves on both sides, and a Y-direction return spring is arranged in the groove.

[0006] Preferably, the X-direction push block is located on the side of the Y-direction slider, the lower part of the X-direction push block is connected to the main positioning plate through a rotating shaft pin, the X-direction push block forms an arc-shaped protrusion on the inner side, and the Y-direction slider forms an inner groove on the outer side surface facing the arc-shaped protrusion.

[0007] Preferably, an X-direction return spring is arranged on the outer side of the upper portion of the X-direction push block.

[0008] Preferably, the Z-direction pressing plate is provided with a first pressing block and a second pressing block on both sides of the lower portion thereof.

[0009] Preferably, the product positioning block is located at the upper opposite position of the Y-direction push block and the X-direction push block to form a workpiece abutment end face.

[0010] Preferably, the driving mechanism is a cylinder, and the cylinder is connected to the Z-direction slider via a connecting shaft and a link block.

[0011] Preferably, the main body positioning plate is installed on the main body bottom plate.

[0012] Preferably, a support plate of equal height is arranged between the main body bottom plate and the cylinder body of the cylinder.

[0013] The beneficial effects of the present invention are: 1. The clever linkage of the mechanism ensures that each product can independently complete its positioning and clamping actions, ensuring the stable positioning and clamping of each product.

[0014] 2. The compact clamping mechanism increases the number of product layouts, reduces the frequency of loading and unloading products during processing, and directly improves the utilization rate of the machine.

[0015] 3. Through the control of electrical auxiliary components, the robot can be combined to load and unload materials, thereby realizing automated production, reducing labor costs, reducing manufacturing costs, and improving product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the decomposition structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the automatic positioning clamping structure of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the positioning block of the product of the present invention.

[0020] In the figure: 1, Z-axis pressure plate 2, first pressure block 3, second pressure block 4, Z-axis slide block 5, spring stopper 6, Y-axis return spring 7, product positioning block 8, X-axis return spring 9, X-axis push block 10, first rotating shaft pin 11, Y-axis push block 12, Y-axis slide block 13, main body positioning plate 14, equal height support plate 15, link block 16, second rotating shaft pin 17, connecting shaft 18, cylinder 19, main body bottom plate 20, guide protrusion 21, abutting end face 22, arc-shaped protrusion 23, inner groove 24, product. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments.

[0022] like Figure 1-Figure 3 The multi-point independent positioning and clamping tool shown in the figure includes a main body positioning plate 13, on which a plurality of product positioning blocks 7 are arranged, and behind the product positioning block 7, a Z-direction slider 4 driven by a driving mechanism to perform lifting and lowering actions is arranged, and a Z-direction pressing plate 1 connected to the upper part of the Z-direction slider 4 is located above the product positioning block 7, and a Y-direction push block 11 and an X-direction push block 9 are respectively arranged on the outer periphery of the product positioning block 7 on adjacent sides, and the movement linkage of the Z-direction slider 4 controls the in and out actions of the Y-direction push block 11 and the X-direction push block 9. The Z-direction slider is controlled by the driving mechanism to perform lifting and lowering to realize the longitudinal positioning of the product, and the movement of the Z-direction slider synchronously drives the Y-direction push block 11 and the X-direction push block 9 to perform actions, so as to realize the actions of loosening or clamping the product in these two directions.

[0023] Specifically, the Y-direction pushing block 11 is arranged in front of the product positioning block 7 , and the X-direction pushing block 9 is located at the side of the product positioning block 7 .

[0024] In one embodiment, the Z-direction slider 4 forms a guide protrusion 20 at the front center, and the Y-direction push block is arranged on a Y-direction slider 12. The rear of the Y-direction slider 12 is arranged on a spring stopper 5. The spring stopper 5 moves forward after contacting the guide protrusion. During the movement of the Z-direction slider, the spring stopper is triggered by the guide protrusion to move forward, and finally pushes the Y-direction push block to move forward. The guide protrusion includes a central protrusion, and the upper and lower ends form a guide arc surface. This structure ensures that the Z-direction slider pushes the spring stopper smoothly during the movement.

[0025] Specifically, the spring stopper 5 is formed with spring accommodating grooves on both sides, and the grooves are provided with Y-direction return springs 6. When the spring stopper and the guide convex point are misaligned, they are reset by the return force of the Y-direction return spring.

[0026] Specifically, the X-direction push block 9 is located at the side of the Y-direction slider 12, and the lower part of the X-direction push block 9 is connected to the main body positioning plate 13 through the first shaft pin 10. The X-direction push block 9 forms an arc-shaped protrusion 22 on the inner side, and the Y-direction slider forms an inner groove 23 on the outer side facing the arc-shaped protrusion. When the Y-direction slider moves outward, the arc-shaped protrusion on the inner side of the X-direction push block is separated from the inner groove, causing the X-direction push block to be pushed outward.

[0027] Specifically, an X-direction return spring 8 is arranged on the outer side of the upper part of the X-direction push block 9. A spring groove is formed on the outer side of the upper part of the X-direction push block 9, and an X-direction return spring is arranged in the spring groove, and the X-direction push block 9 is reset by the X-direction return spring.

[0028] like Figure 4As shown, in one embodiment, a first pressing block 2 and a second pressing block 3 are respectively arranged on both sides of the lower part of the Z-direction pressing plate 1. The two pressing blocks are respectively used to position both sides of the product, so as to achieve compression of the top surface of the product.

[0029] Specifically, the product positioning block 7 is located at the upper opposite position of the Y-direction push block 11 and the X-direction push block 9 to form a workpiece abutment end face 21. The abutment end face cooperates with the two push blocks to form abutment positioning of the four end faces of the product.

[0030] Specifically, the driving mechanism is a cylinder 18 , which is connected to the link block 5 via a connecting shaft 17 , and the link block 15 is connected to the Z-direction sliding block 4 via a second rotating shaft pin 16 .

[0031] Specifically, a groove is formed on the main body bottom plate 19, a positioning platform is arranged in the groove, and the main body positioning plate 13 is installed on the positioning platform.

[0032] In order to reliably support the main body bottom plate 19, an equal-height support plate 14 is provided between the main body bottom plate 19 and the cylinder body of the cylinder and connected by fasteners.

[0033] The working process of the present invention is as follows: the machine macro program issues instructions through the PLC code to control the solenoid valve, the solenoid valve operates to control the robot (not shown in the figure) to place the product 24 on the automatic positioning and clamping device, and then the solenoid valve operates to control the cylinder of the automatic positioning and clamping device to achieve its automatic positioning and clamping. After completion, the robot automatically retrieves the processed product.

[0034] Specifically, the cylinder applies force to drive the connected connecting shaft and the link block to move the Z-direction slider and the Z-direction pressure plate to a fixed position. At the same time, as the two protrusions of the Z-direction slider move upward, the protrusions push the spring block and the Y-direction slider and the Y-direction push block fixed thereto to move forward (Y-direction positioning). While the Y-direction slider moves forward, the arc-shaped protrusion 22 of the X-direction push block disengages from the groove of the Y-direction slider, and the X-direction push block flips outward around the first rotating shaft pin (X-direction positioning). At this point, the X-direction positioning, the Y-direction positioning and the Z-direction clamping are all opened.

[0035] The sequence of steps is as follows: first, the Z-axis pressure plate clamp is released first; second, the Y-axis push block b (Y-axis positioning) is released to position and clamp; and finally, the X-axis push block (X-axis positioning) is released to position and clamp.

[0036] After the robot puts the product into the product positioning block, the cylinder applies force to drive the connected connecting shaft and link block to drive the Z-direction slider and the Z-direction pressure plate to move downward. At the same time, due to the downward movement of the convex point of the Z-direction slider, in the absence of the convex point pushing, the Y-direction return spring applies force to drive the spring block and the Y-direction slider and Y-direction push block fixed with it to move backward (Y-direction positioning). Similarly, while the Y-direction slider moves backward, the X-direction return spring exerts force on the X-direction push block to flip the X-direction push block inward (X-direction positioning).

[0037] The order of steps is that the X-axis push block (X-axis positioning) contacts the product first, the Y-axis push block (Y-axis positioning) clamps the product, and the Z-axis pressure plate presses the product. The above steps complete the positioning and clamping of the product.

[0038] The invention can position and clamp special-shaped products stably, achieve efficient action rhythm, improve machine utilization rate and reduce manufacturing cost.

[0039] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the appended claims of the application.

Claims

1. A multi-point independent positioning clamping tool, comprising a main body positioning plate (13), on which a plurality of product positioning blocks (7) are arranged, characterized in that A Z-direction slider (4) driven by a driving mechanism to perform lifting and lowering movements is arranged behind the product positioning block (7); a Z-direction pressing plate (1) connected to the upper part of the Z-direction slider (4) is located above the product positioning block (7); a Y-direction push block (11) and an X-direction push block (9) are respectively arranged on two adjacent sides of the periphery of the product positioning block (7); the movement linkage of the Z-direction slider (4) controls the in and out movements of the Y-direction push block (11) and the X-direction push block (9).

2. The multi-point independent positioning clamping tool according to claim 1 is characterized in that The Z-direction slider (4) forms a guide protrusion (20) at the front center, the Y-direction push block is arranged on a Y-direction slider (12), and the rear of the Y-direction slider (12) is arranged on a spring stopper (5), and the spring stopper (5) moves forward after contacting the guide protrusion.

3. The multi-point independent positioning clamping tool according to claim 2 is characterized in that The spring stopper (5) is formed with spring receiving grooves on both sides, and a Y-direction return spring (6) is arranged in the spring receiving groove.

4. A multi-point independent positioning clamping tool according to claim 2 or 3, characterized in that The X-direction push block (9) is located on the side of the Y-direction slide block (12), and the lower part of the X-direction push block (9) is connected to the main body positioning plate (13) through a rotating shaft pin. The X-direction push block (9) forms an arc-shaped protrusion (22) on the inner side, and the Y-direction slide block forms an inner groove (23) on the outer side surface facing the arc-shaped protrusion.

5. The multi-point independent positioning clamping tool according to claim 4 is characterized in that An X-direction return spring (8) is arranged on the outer side of the upper part of the X-direction push block (9).

6. The multi-point independent positioning clamping tool according to claim 1 is characterized in that The Z-direction pressing plate (1) is provided with a first pressing block (2) and a second pressing block (3) on both sides of the lower part.

7. The multi-point independent positioning and clamping tool according to claim 1 is characterized in that The product positioning block (7) is located at an upper position opposite to the Y-direction push block (11) and the X-direction push block (9) to form a workpiece abutment end surface (21).

8. The multi-point independent positioning clamping tool according to claim 1 is characterized in that The driving mechanism is a cylinder (18), which is connected to the Z-direction slider (4) via a connecting shaft (17) and a link block (15).

9. The multi-point independent positioning clamping tool according to claim 1 is characterized in that The main body positioning plate (13) is mounted on the main body bottom plate (19).

10. The multi-point independent positioning clamping tool according to claim 9, characterized in that A support plate (14) of equal height is arranged between the main body bottom plate (19) and the cylinder body of the cylinder.

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