Internal support type clamp

Abstract

The utility model relates to the technical field of hardware machining, in particular to an inner supporting type clamp which comprises an installation frame, the installation frame is provided with a mold core and a supporting mechanism, the mold core is provided with a through hole, a plurality of clamping blocks are distributed on the mold core in an annular array mode with the center of the through hole as the circle center, and gaps are formed between the adjacent clamping blocks. The output end of the opening mechanism is arranged in the through hole, and the opening mechanism is used for driving the multiple clamping blocks to be away from each other in a pneumatic mode so as to abut against the inner side wall of a product installed on the mold core. The opening mechanism acts in the through hole, control over the clamping block is achieved, the effect that the clamping block is automatically controlled to be opened or retracted is achieved, and therefore a thought is provided for automatic product replacement, and the product replacement efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of hardware processing technology, and in particular to an internal support type clamp. Background Technology

[0002] For hollow hardware parts, internal support structures are typically used for clamping to save space. However, existing internal support clamps require manual control for opening and closing, resulting in low product changeover efficiency and indirectly increasing production costs. Summary of the Invention

[0003] This invention addresses the problems of existing technologies by providing an internal support clamp that can automatically achieve internal support and reset, thereby improving the efficiency of product replacement.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides an internal support clamp, including a mounting frame, which is provided with a mold core and a spreading mechanism. The mold core is provided with a through hole, and multiple clamping blocks are distributed in a circular array with the center of the through hole as the center. There are gaps between adjacent clamping blocks. The output end of the spreading mechanism is installed in the through hole. The spreading mechanism is used to pneumatically drive the multiple clamping blocks to move away from each other so as to abut against the inner sidewall of the product installed on the mold core.

[0006] Furthermore, the mounting frame has a connecting hole, the mold core is disposed on the top of the mounting frame, and the through hole communicates with the connecting hole; the spreading mechanism includes a spreading cylinder and a spreading member, the spreading cylinder is installed at the bottom of the mounting frame, the piston rod of the spreading cylinder protrudes into the through hole through the connecting hole, the spreading member is installed on the piston rod of the spreading cylinder, the spreading member is located between multiple clamping blocks, and the width of the spreading member increases from one end connected to the spreading cylinder to the other end.

[0007] Furthermore, the mold core is provided with external threads, and the connecting hole is provided with internal threads, with the external threads and internal threads engaging in a screw connection.

[0008] Furthermore, the connecting hole includes a clearance hole and a mounting hole, which are connected. The clearance hole is located directly below the mounting hole, and the inner diameter of the clearance hole is smaller than the inner diameter of the mounting hole. An internal thread is provided in the mounting hole, the mold core is provided with a mounting part, and an external thread is provided in the mounting part. The outer diameter of the mounting part is adapted to the inner diameter of the mounting hole.

[0009] Furthermore, the expansion member is screwed to the piston rod of the expansion cylinder, and a control groove is provided on the top of the expansion member.

[0010] Furthermore, the clamping block includes a connecting part, a limiting part, and a supporting part. The limiting part is located between the connecting part and the supporting part. The connecting part is connected to the mold core. Multiple supporting parts are arranged to form a supporting hole. The supporting member is located inside the supporting hole. The shape of the supporting hole is adapted to the shape of the supporting member. The supporting member abuts against the inner sidewall of the supporting part.

[0011] The beneficial effects of this utility model are as follows: This utility model achieves control of the clamping block by having the opening mechanism move within the through hole, thus realizing the effect of automatically controlling the opening or retraction of the clamping block, providing a solution for automated product replacement and improving the efficiency of product replacement. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention.

[0013] Figure 2 This is a cross-sectional view of the mold core of this utility model.

[0014] Figure 3 This is a schematic diagram of the spreading mechanism of this utility model.

[0015] Figure 4 This is a cross-sectional view of the mounting bracket of this utility model.

[0016] Reference numerals: 1—mounting bracket, 2—mold core, 3—spreading mechanism, 11—connecting hole, 12—internal thread, 13—clearance hole, 14—mounting hole, 21—through hole, 22—clamping block, 23—gap, 24—external thread, 25—mounting part, 26—connecting part, 27—limiting part, 28—spreading part, 29—spreading hole, 31—spreading cylinder, 32—spreading component, 33—control groove, 34—connecting rod. Detailed Implementation

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0018] like Figures 1 to 4 As shown, the present invention provides an internal support clamp, including a mounting frame 1. The mounting frame 1 is provided with a mold core 2 and a spreading mechanism 3. The mold core 2 is provided with a through hole 21. Multiple clamping blocks 22 are arranged in a circular array with the center of the through hole 21 as the center. There is a gap 23 between adjacent clamping blocks 22. The output end of the spreading mechanism 3 is installed in the through hole 21. The spreading mechanism 3 is used to pneumatically drive the multiple clamping blocks 22 away from each other so as to abut against the inner sidewall of the product installed on the mold core 2.

[0019] The expansion mechanism 3 extends and retracts within the through hole 21 to control the clamping block 22: when the expansion mechanism 3 extends, the output end of the expansion mechanism 3 does not contact the inner wall of the clamping block 22, and the clamping block 22 resets under its own stress, achieving the effect of inward retraction, allowing the product to detach from the clamping block 22; when the expansion mechanism 3 retracts, the output end of the expansion mechanism 3 contacts the inner wall of the clamping block 22, thereby forcing the clamping block 22 to open outward, thus achieving the effect of clamping the product from the inside.

[0020] In this embodiment, the mounting frame 1 has a connecting hole 11, the mold core 2 is disposed on the top of the mounting frame 1, and the through hole 21 communicates with the connecting hole 11; the spreading mechanism 3 includes a spreading cylinder 31 and a spreading member 32. The spreading cylinder 31 is installed at the bottom of the mounting frame 1, and the piston rod of the spreading cylinder 31 protrudes into the through hole 21 through the connecting hole 11. The spreading member 32 is installed on the piston rod of the spreading cylinder 31 and is located between multiple clamping blocks 22. The width of the spreading member 32 increases from one end connected to the spreading cylinder 31 to the other end.

[0021] The expansion member 32 is driven by the expansion cylinder 31 to move within the through hole 21, so as to achieve the effect of resisting or not resisting the clamping block 22, thereby realizing the control of the clamping block 22.

[0022] Specifically, the mold core 2 is provided with an external thread 24, and the connecting hole 11 is provided with an internal thread 12. The external thread 24 and the internal thread 12 are screwed together. That is, the mold core 2 and the mounting frame 1 are screwed together, so that the operator can replace the mold core 2 with a suitable one as needed on the mounting frame 1, which improves flexibility.

[0023] Specifically, the expansion member 32 is screwed to the piston rod of the expansion cylinder 31, and the top of the expansion member 32 is provided with a control groove 33; the expansion member 32 has a connecting rod 34, which is screwed to the piston rod of the expansion cylinder 31. The control groove 33 is adapted to the shape of an external screwdriver, such as a slotted groove in this utility model. That is, when it is necessary to replace the mold core 2, the expansion member 32 must first be turned so that the expansion member 32 is no longer threadedly connected to the expansion cylinder 31, so that the expansion member 32 can be removed from the mold core 2, and then the mold core 2 can be loosened from the mounting seat and removed; after replacing the mold core 2, a suitable expansion member 32 needs to be selected and assembled to the piston rod of the expansion cylinder 31 so that this utility model can continue to be used.

[0024] Specifically, the connecting hole 11 includes a clearance hole 13 and a mounting hole 14, which are connected. The clearance hole 13 is located directly below the mounting hole 14, and the inner diameter of the clearance hole 13 is smaller than the inner diameter of the mounting hole 14. An internal thread 12 is provided in the mounting hole 14, and the mold core 2 is provided with a mounting part 25. An external thread 24 is provided in the mounting part 25, and the outer diameter of the mounting part 25 is adapted to the inner diameter of the mounting hole 14.

[0025] In addition to allowing space for the piston rod / spreading member 32 of the cylinder 31, the clearance hole 13 is also used to limit the screw connection between the mounting hole 14 and the mold core 2, thereby preventing the mold core 2 from being installed too deep and affecting the actual application effect.

[0026] Specifically, the clamping block 22 includes a connecting portion 26, a limiting portion 27, and a supporting portion 28. The limiting portion 27 is located between the connecting portion 26 and the supporting portion 28. The connecting portion 26 is connected to the mold core 2. Multiple supporting portions 28 are arranged to form a supporting hole 29. A supporting member 32 is located inside the supporting hole 29. The shape of the supporting hole 29 is adapted to the shape of the supporting member 32. The supporting member 32 abuts against the inner wall of the supporting portion 28. The limiting portion 27 abuts against the product to be internally supported, thus supporting the product. The supporting portion 28 abuts against the inner wall of the product to achieve internal support. In use, the shape of the supporting hole 29 is adapted to the shape of the supporting member 32, both being frustum-shaped, achieving the effect of arc surface abutting against arc surface, which helps to reduce wear between the supporting member 32 and the clamping block 22.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. An internal support type clamp, comprising a mounting frame, characterized in that: The mounting frame is provided with a mold core and a spreading mechanism. The mold core is provided with a through hole, and multiple clamping blocks are arranged in a circular array with the center of the through hole as the center. There is a gap between adjacent clamping blocks. The output end of the spreading mechanism is installed in the through hole. The spreading mechanism is used to pneumatically drive the multiple clamping blocks to move away from each other so as to abut against the inner wall of the product installed on the mold core.

2. The internal support clamp according to claim 1, characterized in that: The mounting frame has a connecting hole, and the mold core is set on the top of the mounting frame. The connecting hole is connected to the connecting hole. The spreading mechanism includes a spreading cylinder and a spreading member. The spreading cylinder is installed at the bottom of the mounting frame. The piston rod of the spreading cylinder protrudes into the connecting hole through the connecting hole. The spreading member is installed on the piston rod of the spreading cylinder. The spreading member is located between multiple clamping blocks. The width of the spreading member increases from one end connected to the spreading cylinder to the other end.

3. The internal support clamp according to claim 2, characterized in that: The mold core is provided with external threads, and the connecting hole is provided with internal threads. The external threads and internal threads are screwed together.

4. The internal support clamp according to claim 3, characterized in that: The connecting hole includes a clearance hole and a mounting hole, which are connected. The clearance hole is located directly below the mounting hole, and the inner diameter of the clearance hole is smaller than the inner diameter of the mounting hole. An internal thread is provided in the mounting hole, and the mold core is provided with a mounting part. An external thread is provided in the mounting part, and the outer diameter of the mounting part is adapted to the inner diameter of the mounting hole.

5. The internally supported clamp according to claim 3, characterized in that: The expansion member is screwed to the piston rod of the expansion cylinder, and a control groove is provided on the top of the expansion member.

6. The internally supported clamp according to claim 2, characterized in that: The clamping block includes a connecting part, a limiting part, and a supporting part. The limiting part is located between the connecting part and the supporting part. The connecting part is connected to the mold core. Multiple supporting parts are arranged to form a supporting hole. The supporting member is located inside the supporting hole. The shape of the supporting hole is adapted to the shape of the supporting member. The supporting member abuts against the inner sidewall of the supporting part.

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