A clamping fixture for multi-cavity irregular thin-walled products

Abstract

This invention relates to a clamping fixture for multi-cavity, irregularly shaped, thin-walled products. Currently, the processing of irregularly shaped, thin-walled products tests the positioning and clamping effectiveness of fixtures. This invention includes a base with a main template mounted on it. The main template features multiple clamping stations, each including an X-axis fixing mechanism. A floating support mechanism is located at the rear end of the X-axis fixing mechanism. The floating support mechanism includes two symmetrically arranged support blocks, each forming a cavity. A slider is placed within each cavity, and the slider's vertical movement adjusts the lateral distance between the two support blocks. As the distance increases until the blocks contact the product, support is achieved. This invention enables automatic positioning and clamping, avoiding manual intervention. The floating support mechanism automatically compensates for changes in product dimensions, providing effective and stable support and enhancing product clamping stability.

Description

Technical Field

[0001] This invention belongs to the technical field of tooling and fixtures, and particularly relates to a clamping tool for multi-cavity irregular thin-walled products. Background Technology

[0002] Currently, the clamping of fixtures remains a challenge in the processing of most thin-walled products, especially for irregularly shaped thin-walled products, which tests the positioning and clamping effectiveness of tooling fixtures.

[0003] For conventional thin-walled products, clamping fixtures are prone to deformation. Therefore, fixed support structures are used to strengthen the product's structural strength. However, the problem is that fixed supports have high requirements for the product. The product itself is subject to deformation and dimensional fluctuations. The current support structure cannot be used as a floating support to strengthen the structure as the product size fluctuates. This is not conducive to the positioning and clamping of the product, which requires product selection and the manufacture of corresponding tooling fixtures for products of different sizes. This results in low production efficiency and increased manufacturing costs. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a clamping fixture for multi-cavity irregular thin-walled products. This fixture can accurately position the product as a floating support, following fluctuations in product size. It enables rapid product positioning, easy and stable clamping, and improves production efficiency and yield.

[0005] The present invention adopts the following technical solution: a clamping fixture for multi-cavity irregular thin-walled products, including a base, a main template set on the base, characterized in that the main template is provided with multiple clamping stations, each clamping station including an X-axis fixing mechanism, and a floating support mechanism is set at the rear end of the X-axis fixing mechanism. The floating support mechanism includes two support blocks arranged symmetrically on the left and right, and the interior of the two support blocks forms a cavity. A slider is set in the cavity. The slider can adjust the left and right distance between the two support blocks by moving up and down. The distance between the two support blocks increases until they contact the product to achieve support for the product.

[0006] Preferably, the inner end faces of the two support blocks form inclined surfaces in the longitudinal direction, and the slider forms wedge-shaped surfaces on both sides that match the inclined surfaces.

[0007] Preferably, the X-direction fixing mechanism includes a fixing block and an X-direction positioning push block. The center of the fixing block forms a space to accommodate the X-direction positioning push block. A return spring is provided on the upper part between the fixing block and the X-direction positioning push block. The fixing block is connected to the middle of both sides of the X-direction positioning push block through a rotating shaft.

[0008] Preferably, a mechanism limiting plate is also provided on the main template above the clamping station.

[0009] Preferably, a Y-direction fixing mechanism is provided on the side of the X-direction fixing mechanism at the clamping station. The Y-direction fixing mechanism includes a Y-direction ejection cylinder, which ejects the Y-direction clamping block to achieve the pressing of the product in the Y direction.

[0010] Preferably, an auxiliary positioning mechanism is also included, which includes an auxiliary ejection cylinder and an auxiliary positioning main board. The inner end of the auxiliary positioning main board is provided with multiple pressing mechanisms, which press down on the limiting plate of the pressing mechanism.

[0011] Preferably, the pressing mechanism includes a pressing block driven by a pressing cylinder.

[0012] Preferably, the lower part of the X-direction positioning push block is connected to the X-direction positioning push plate, and the X-direction positioning push plate is connected to the X-direction ejection cylinder.

[0013] Preferably, the lower part of the slider is connected to a guide post, and the guide post is connected to a lifting mechanism.

[0014] Preferably, a spring is fitted onto the guide post.

[0015] This invention enables automatic positioning and clamping, avoiding manual intervention. The floating support mechanism can automatically compensate for changes in the size of the product, providing effective and stable support and making the product clamping more stable. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the auxiliary positioning mechanism of the present invention;

[0018] Figure 3 This is a schematic diagram of the drive section structure of the X-direction fixing mechanism and the floating support mechanism of the present invention.

[0019] Figure 4 This is a structural schematic diagram of the X-direction fixing mechanism and the floating support mechanism of the present invention.

[0020] Figure 5 This is a schematic diagram of the X-direction fixing mechanism of the present invention.

[0021] Figure 6 This is a schematic diagram of the floating support mechanism of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] like Figures 1-6The clamping fixture shown includes a base 1, a main template 2 on the base, and multiple clamping stations on the main template 2. Each clamping station includes an X-axis fixing mechanism B, and a floating support mechanism C is located at the rear end of the X-axis fixing mechanism. The floating support mechanism includes two support blocks arranged symmetrically on the left and right, and the interior of the two support blocks forms a cavity. A slider 35 is arranged in the cavity. The slider can adjust the left and right distance between the two support blocks by moving up and down. When the distance between the two support blocks increases, they contact the product to support the product A.

[0024] like Figure 3 and Figure 5 As shown, in one embodiment, the X-direction fixing mechanism B includes a fixing block 32 and an X-direction positioning push block 29. The fixing block is U-shaped, and its front center forms a space to accommodate the X-direction positioning push block. A reset spring 30 is provided on the upper part between the fixing block and the X-direction positioning push block.

[0025] Specifically, a positioning groove is provided on the upper part of the X-axis positioning push block to position and install the reset spring 30.

[0026] Specifically, positioning connection holes are provided on both sides of the lower part of the fixed block and in the middle of both sides of the X-direction positioning push block, and the X-direction positioning push block and the fixed block are connected in the holes through the rotating shaft 31.

[0027] In one embodiment, the lower part of the X-direction positioning push block 29 is connected to the X-direction positioning push plate 19, and the lower part of the X-direction positioning push plate 19 is then connected to the X-direction ejection cylinder 22 via the first connecting plate 20 and the second connecting plate 21.

[0028] like Figure 4 and Figure 6 As shown, the floating support mechanism C includes a first support block 33 and a second support block 34. The inner end faces of the two support blocks form inclined surfaces 38 in the longitudinal direction, and the slider 35 forms wedge-shaped surfaces on both sides that match the inclined surfaces.

[0029] Specifically, a guide post 37 is connected to the lower part of the slider 35, a spring 36 is fitted onto the guide post, and the guide post is connected to the lifting mechanism. For example... Figure 3 As shown, the lifting mechanism includes a lifting cylinder 17, a push plate 16 is provided on the upper part of the lifting cylinder 17, and multiple guide columns are provided on the push plate. The lifting cylinder 17 is fixed on the cylinder fixing plate 18.

[0030] In one embodiment, a mechanism limiting plate 4 is also provided on the main template 2 above the clamping station.

[0031] A Y-direction fixing mechanism D is located on the side of the X-direction fixing mechanism B at the clamping station. The Y-direction fixing mechanism includes a Y-direction ejection cylinder 28, a connecting shaft 26 and a leveling column 27 on the Y-direction ejection cylinder 28, a Y-direction clamping push block 24 on the outside of the Y-direction clamping block 23, and a connecting fixing column 25 at the bottom of the Y-direction clamping block 23. When the Y-direction ejection cylinder 28 is activated, it applies force to drive the connecting shaft 26, the connecting fixing column 25, the Y-direction clamping push block 24, and the Y-direction clamping block 23 to clamp the product.

[0032] In one embodiment, an auxiliary positioning mechanism is also included, which includes an auxiliary ejection cylinder 5 and an auxiliary positioning main board 3. The auxiliary ejection cylinder 5 is mounted on the cylinder fixing block 6 via a floating joint 8 and a cylinder connecting block 7.

[0033] Specifically, the auxiliary positioning main board 3 is equipped with a moving mechanism at both ends, consisting of a linear guide rail fixing plate 9, a support plate 10, a connecting fixing plate 11, and a linear guide rail 12, to ensure the movement of the auxiliary positioning main board 3 in the Y direction. The moving mechanism is mounted on the mechanism fixing plate 15.

[0034] In one implementation, multiple pressing mechanisms E are provided inside the auxiliary positioning motherboard, and the pressing mechanisms press down against the limiting plate 4 of the mechanism. The pressing mechanism includes a pressing block 14 driven to press down by a pressing cylinder 13.

[0035] The working process of this invention is as follows: In the initial state, the product is placed in the air. The X-direction ejection cylinder 22 is activated, which drives the X-direction positioning push plate 19 to release the reset spring 30. The reset spring applies force to make the X-direction positioning push block 29 rotate around the rotating shaft 31 to position the product in the X direction.

[0036] When the lifting cylinder 17 is activated, it moves the push plate 16 downward. The spring 36 applies force to push the guide post 37 and the slider 35 downward. The slider causes the first support block 33 and the second support block 34 to expand outward to both sides until they contact the product and stop supporting the product. The slight force applied by the spring 36 and the self-locking formed by the angle of the wedge block prevent the product from deforming while providing strong support.

[0037] The auxiliary ejection cylinder moves the auxiliary positioning main board 3 in the Y direction. After reaching the position, the pressing cylinder 13 applies downward force to clamp the product in the Z direction. The ejection cylinder 28 applies force to drive the connecting shaft 26, connecting the fixing column 25, the Y-axis clamping push block 24, and the Y-axis clamping block 23 to clamp the product. At this point, the pressing cylinder resets. (The auxiliary ejection cylinder resets the auxiliary positioning main board 3, and processing begins.)

[0038] After processing is completed, the ejector cylinder 22 moves to reset the X-direction positioning push plate 19 and the X-direction positioning push block 29; the lifting cylinder 17 moves to push the push plate 16 upward, pushing the guide column 37 and the slider 35 upward. Under the limit of the mechanism limit plate 4, the first support block and the second support block retract inward. At this point, one positioning, clamping and processing cycle is completed, the product is taken out, and the product positioning and clamping processing process is repeated.

[0039] The floating support mechanism of this invention can automatically compensate for changes in product size, eliminating the need for product size screening. It solves the problem of difficult positioning and clamping of irregularly shaped thin-walled products. At the same time, it can also use a robotic arm to clamp the product. The positioning and clamping process can be fully automated with the cooperation of the cylinder, solenoid valve and processing program, reducing manual operation, making the product positioning and clamping process more stable, improving machine operating efficiency and reducing manufacturing costs.

[0040] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A clamping fixture for multi-cavity irregular thin-walled products, comprising a base (1) and a main template (2) disposed on the base, characterized in that... The main template (2) is provided with multiple clamping stations. Each clamping station includes an X-direction fixing mechanism (B). A floating support mechanism (C) is provided at the rear end of the X-direction fixing mechanism. The floating support mechanism (C) includes two support blocks arranged symmetrically on the left and right. The interior of the two support blocks forms a cavity. A slider (35) is provided in the cavity. The slider can adjust the left and right distance between the two support blocks by moving up and down. The distance between the two support blocks increases until they contact the product to support the product (A). The X-direction fixing mechanism (B) includes a fixing block (32) and an X-direction positioning push block (29). The center of the fixing block forms a space to accommodate the X-direction positioning push block. A reset spring (30) is provided on the upper part between the fixing block and the X-direction positioning push block. The middle of both sides of the X-direction positioning push block is connected to the fixing block through a rotating shaft (31).

2. The clamping fixture for multi-cavity irregular thin-walled products according to claim 1, characterized in that... The inner end faces of the two support blocks form inclined surfaces (38) in the longitudinal direction, and the slider (35) forms wedge-shaped surfaces on both sides that match the inclined surfaces.

3. The clamping fixture for multi-cavity irregular thin-walled products according to claim 1, characterized in that... The main template (2) is also provided with a mechanism limiting plate (4) above the clamping station.

4. The clamping fixture for multi-cavity irregular thin-walled products according to claim 1, characterized in that... A Y-direction fixing mechanism (D) is provided on the side of the X-direction fixing mechanism (B) at the clamping station. The Y-direction fixing mechanism includes a Y-direction ejection cylinder (28), which ejects the Y-direction clamping block (23) to achieve the Y-direction pressing of the product.

5. The clamping fixture for multi-cavity irregular thin-walled products according to claim 3, characterized in that... It also includes an auxiliary positioning mechanism, which includes an auxiliary ejection cylinder (5) and an auxiliary positioning main board (3). The inner end of the auxiliary positioning main board is provided with multiple pressing mechanisms (E), and the pressing mechanisms press down on the limiting plate (4) of the pressing mechanism.

6. The clamping fixture for multi-cavity irregular thin-walled products according to claim 5, characterized in that... The pressing mechanism includes a pressing block (14) driven to press down by a pressing cylinder (13).

7. The clamping fixture for multi-cavity irregular thin-walled products according to claim 1, characterized in that... The lower part of the X-direction positioning push block is connected to the X-direction positioning push plate (19), and the X-direction positioning push plate is connected to the X-direction ejection cylinder (22).

8. The clamping fixture for multi-cavity irregular thin-walled products according to claim 1, characterized in that... The lower part of the slider is connected to the guide post (37), and the guide post is connected to the lifting mechanism.

9. A clamping fixture for multi-cavity irregular thin-walled products according to claim 8, characterized in that... A spring (36) is fitted onto the guide post.

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