Screw head shaping clamp

Abstract

The utility model provides a screw head shaping clamp, which relates to the field of clamps and comprises a clamp ring, one side of the clamp ring is connected with a fixing frame, the outer side of the fixing frame is connected with an outer driving shaft, the center of the clamp ring is connected with an inner driving shaft, and the outer wall of the inner driving shaft is connected with a connecting rod mechanism. A mounting hole is formed in the outer ring wall of the clamp ring, elastic grooves are symmetrically formed in the inner wall of the mounting hole, clamping blocks are slidably connected into the elastic grooves, a pressing piece is slidably connected to the inner side of the mounting hole, and the end face of the inner side of the pressing piece is hinged to the connecting rod mechanism. The screw head shaping clamp solves the problems that an existing screw head shaping clamp cannot guarantee that a clamped screw is located on the horizontal line, the follow-up machining process is affected, and meanwhile machining efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a screw head shaping clamp. Background Art

[0002] Screws, screws and bolts are all mechanical connection elements, usually used to fix two or more parts together. The main feature is its thread structure, including the diameter, pitch and thread type of the thread. The thread of the screw can be matched with the nut or other threaded holes to achieve the connection of parts. The screw usually consists of two parts: the screw head and the screw rod. The most critical part in screw processing is to process the thread on the screw rod. The thread design allows the screw to be pushed into another part while rotating, thereby completing the tightening function. After searching, the prior art (publication number: CN221313374U) records "a screw head shaping fixture, including a shell, the inside of the shell is rotatably connected to a plurality of pulleys, the outer periphery of the plurality of pulleys is sleeved with a belt, the top of the pulley is fixedly connected to a turntable, the top of the turntable is fixedly connected to an eccentric column, the middle of the shell is slidably connected to a plurality of connecting rod belts, the eccentric column is arranged in the middle of the connecting rod belt, the adjacent side of the plurality of connecting rod belts is fixedly connected to an L-shaped slider, the L-shaped slider is slidably connected to the middle of the shell, and the top of the L-shaped slider is fixedly connected to a clamp. In the utility model, the clamp can drive the rubber pad to clamp screw heads of different shapes at multiple points by driving the motor, and the employee does not need to manually operate the clamp to clamp the screw head, which can improve and reduce the labor intensity of the employee, and at the same time improve the stability of clamping."

[0003] Although the screw head shaping fixture in the prior art can achieve the effect of automatically clamping the screw head, there are still some shortcomings: when the existing screw head shaping fixture involves a clamping plate and an inner rubber pad, the rubber pad is easily squeezed and deformed by the screw head, resulting in clamping, and the screw head width of some screws is small, which is prone to clamping deviation, and manual support is required during operation. Therefore, the three clamps can only ensure the stability of clamping, but cannot ensure that the screw is on the horizontal line, which in turn affects the subsequent tapping process on the outer wall of the screw. Secondly, the above-mentioned fixture can only clamp one screw at a time, resulting in reduced processing efficiency. Utility Model Content

[0004] In order to overcome the defects of the prior art, a screw head shaping fixture is now provided to solve the problem that the existing screw head shaping fixture cannot ensure that the screw is on a horizontal line after being clamped, thereby affecting the subsequent processing flow and having low processing efficiency.

[0005] In order to achieve the above-mentioned purpose, a screw head shaping fixture is provided, including: a fixture ring, one side of the fixture ring is connected to a fixing frame, and the outer side of the fixing frame is connected to an outer drive shaft, and the center of the fixture ring is connected to an inner drive shaft, and the outer wall of the inner drive shaft is connected to a connecting rod mechanism, the outer ring wall of the fixture ring is provided with a mounting hole, and the inner wall of the mounting hole is symmetrically provided with elastic grooves, and a clamping block is slidably connected to the inside of the elastic groove, a clamping piece is slidably connected to the inner side of the mounting hole, and the inner end face of the clamping piece is hinged to the connecting rod mechanism.

[0006] Furthermore, the clamp ring is configured as a ring body structure, the fixing frame is connected to the ring wall on one side of the ring body, and the outer drive shaft and the inner drive shaft are respectively connected to two sides of the ring body.

[0007] Furthermore, the connecting rod mechanism includes two hinged connecting rods, and the connecting rod mechanism is arranged at equal intervals along the circumferential direction of the inner driving shaft, and the angle between the two hinged connecting rods is an obtuse angle.

[0008] Furthermore, a spring is provided at the bottom of the inner side of the elastic groove, and a guide column is provided at the inner side end of the clamping block, and the spring is sleeved on the outer side of the guide column.

[0009] Furthermore, an arc groove is formed on the opposite side of the clamping block, and a rubber pad is provided on the inner groove wall of the arc groove. A first sliding block is connected to the outer side of the clamping block, and the first sliding block is slidably connected to the inner groove wall of the elastic groove.

[0010] Furthermore, the mounting hole is configured as a rectangular hole structure, and the width of the mounting hole is smaller than the width of the outer end surface of the clamp ring, and the area of ​​the mounting hole is smaller than the clamping piece.

[0011] Furthermore, the clamping member includes a moving block, and a squeezing block is fixed on the side of the moving block facing the clamping block, and the outer wall of the moving block is connected to a second sliding block, and the second sliding block is slidably connected to a limiting groove opened on the inner wall of the mounting hole.

[0012] The beneficial effects of the utility model are:

[0013] 1. When in use, insert the screw head into the mounting groove on the outside of the clamp ring, and then squeeze the clamp block so that the screw head and the step of the screw rod are stuck in the arc groove, and then drive the inner drive shaft through the motor to rotate the inner drive shaft to drive the connecting rod structure to stretch and move, and then apply an outward thrust to the clamping piece, so as to achieve contact and extrusion of the end of the screw head, and at the same time cooperate with the limit of the clamp block to clamp and fix the screw head. Since the screw rod part of the screw is elastically clamped, the screw head is squeezed by the flat extrusion block, thus ensuring that the screw is in a horizontal position after clamping, which is convenient for subsequent processing;

[0014] 2. By using multiple groups of mounting holes on the fixture ring, multiple screws can be installed at one time. After one screw is processed, the outer drive shaft is driven by starting the motor, and then the fixture ring is driven to rotate a certain angle as a whole through the fixed frame, so that the screw inside the other mounting hole is in the processing equipment position, thereby achieving the effect of continuous processing of multiple screws at one time, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of a clamp ring according to an embodiment of the utility model.

[0016] Figure 2 For the utility model embodiment Figure 1 Schematic diagram of the structure at point A in the middle.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping member according to an embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of the side view structure of the clamp ring of an embodiment of the utility model.

[0019] In the figure: 1. clamp ring; 11. mounting hole; 12. clamp block; 13. elastic groove; 14. spring; 15. first slider; 16. clamping member; 161. moving block; 162. extrusion block; 17. second slider; 2. inner drive shaft; 3. connecting rod mechanism; 4. fixing frame; 5. outer drive shaft. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4 As shown, the utility model provides a screw head shaping fixture, including: a fixture ring 1, a fixing frame 4 is connected to one side of the fixture ring 1, and an outer side of the fixing frame 4 is connected to an outer drive shaft 5, and an inner drive shaft 2 is connected to the center of the fixture ring 1, and a connecting rod mechanism 3 is connected to the outer wall of the inner drive shaft 2, an outer ring wall of the fixture ring 1 is provided with a mounting hole 11, and an inner wall of the mounting hole 11 is symmetrically provided with elastic grooves 13, and a clamping block 12 is slidably connected to the inside of the elastic groove 13, a clamping piece 16 is slidably connected to the inner side of the mounting hole 11, and the inner end face of the clamping piece 16 is hinged to the connecting rod mechanism 3.

[0021] In this embodiment, the clamp ring 1 and the inner and outer structures as a whole constitute the main structure of the screw head shaping clamp involved in this application.

[0022] Specifically, the outer end of the inner drive shaft 2 is connected to a motor, and the motor is integrally connected to the clamp ring 1 through a fixing frame 4 (not shown in the figure), that is, the inner drive shaft 2 and the motor rotate synchronously with the clamp ring 1.

[0023] It should be noted that in order to maintain the overall rotational stability of the clamp ring 1, an annular closed guide groove is opened on the outer wall of the ring body. The guide groove avoids the outer side of the mounting hole 11. The guide groove is symmetrically arranged about the mounting hole 11, and then the support rod or other support structure is slidably connected inside the guide groove to realize the movable connection of the clamp ring 1.

[0024] like Figure 1 and Figure 4 As shown, the clamp ring 1 is configured as a ring body structure, and the fixing frame 4 is connected to the ring wall on one side of the ring body, and the outer drive shaft 5 and the inner drive shaft 2 are respectively connected to the two sides of the ring body, and the connecting rod mechanism 3 includes two hinged connecting rods, and the connecting rod mechanism 3 is arranged at equal intervals along the circumferential direction of the inner drive shaft 2, and the angle between the two hinged connecting rods is an obtuse angle.

[0025] As a preferred embodiment, the inner end of the connecting rod mechanism 3 is fixedly connected to the inner drive shaft 2, so that when the inner drive shaft 2 rotates forward and reversely, the connecting rod mechanism 3 can be driven to expand and bend and contract, thereby achieving the pushing out and retracting effect of the clamping member 16, and when it is pushed toward the outer mouth of the mounting hole 11, the squeezing and clamping effect is achieved, and when it is retracted, the releasing effect of the screw is achieved.

[0026] like Figures 1 to 3 As shown, a spring 14 is provided at the bottom of the inner groove of the elastic groove 13, and a guide column is provided at the inner end of the clamping block 12, and the spring 14 is sleeved on the outer side of the guide column, an arc groove is opened on the opposite side of the clamping block 12, and a rubber pad is provided on the inner groove wall of the arc groove, and a first slider 15 is connected to the outer side of the clamping block 12, and the first slider 15 is slidably connected to the inner groove wall of the elastic groove 13, the mounting hole 11 is set as a rectangular hole structure, and the width of the mounting hole 11 is smaller than the width of the outer end face of the clamp ring 1, and the area of ​​the mounting hole 11 is smaller than the clamping piece 16, the clamping piece 16 includes a moving block 161, and an extrusion block 162 is fixed to the side of the moving block 161 facing the clamping block 12, and the outer wall of the moving block 161 is connected to the second slider 17, and the second slider 17 is slidably connected to the limiting groove opened on the inner wall of the mounting hole 11.

[0027] As a preferred embodiment, a clamping block 12 is provided to achieve preliminary clamping of the screw rod portion, and the clamping effect is achieved by the elastic force of the spring 14. In addition, the spring 14 can be replaced with a miniature electric push rod to increase the clamping effect of the clamping block 12 at the inner end of the clamping block 12.

[0028] As a preferred implementation, the arc groove and rubber pad provided on the clamping block 12 can achieve stable clamping of the screw and prevent slipping during processing.

[0029] When in use, insert the screw head into the mounting groove on the outside of the clamp ring, and then squeeze the clamp block so that the screw head and the step of the screw rod are stuck in the arc groove, and then drive the inner drive shaft through the motor to rotate and drive the connecting rod structure to extend and move, thereby applying an outward thrust to the clamping piece, thereby achieving contact and extrusion of the end of the screw head, and at the same time cooperating with the limiting of the clamp block, so that the screw head is clamped and fixed. Since the screw rod part of the screw is elastically clamped, the screw head is squeezed by the flat extrusion block, thereby ensuring that the screw is in a horizontal position after clamping, which is convenient for subsequent processing.

[0030] The screw head shaping fixture of the utility model can effectively solve the problem that the existing screw head shaping fixture cannot ensure that the screw after clamping is in a horizontal line, which in turn affects the subsequent processing flow and has low processing efficiency. It is achieved on the basis of the existing screw head shaping fixture technology to ensure that the screw after clamping is in a horizontal direction, which is convenient for subsequent processing and improves processing efficiency.

Claims

1. A screw head shaping fixture, comprising: A clamp ring (1), characterized in that: a fixing frame (4) is connected to one side of the clamp ring (1), and an outer side of the fixing frame (4) is connected to an outer drive shaft (5), and an inner drive shaft (2) is connected to the center of the clamp ring (1), and the outer wall of the inner drive shaft (2) is connected to a connecting rod mechanism (3), the outer ring wall of the clamp ring (1) is provided with a mounting hole (11), and the inner wall of the mounting hole (11) is symmetrically provided with elastic grooves (13), and a clamping block (12) is slidably connected inside the elastic groove (13), a clamping piece (16) is slidably connected to the inner side of the mounting hole (11), and the inner end face of the clamping piece (16) is hinged to the connecting rod mechanism (3).

2. A screw head shaping fixture according to claim 1, characterized in that: The clamp ring (1) is provided as a ring body structure, the fixing frame (4) is connected to the ring wall on one side of the ring body, and the outer drive shaft (5) and the inner drive shaft (2) are respectively connected to the two sides of the ring body.

3. A screw head shaping fixture according to claim 1, characterized in that: The connecting rod mechanism (3) comprises two hinged connecting rods, and the connecting rod mechanism (3) is arranged at equal intervals along the circumferential direction of the inner drive shaft (2), and the angle between the two hinged connecting rods is an obtuse angle.

4. A screw head shaping fixture according to claim 1, characterized in that: A spring (14) is provided at the bottom of the inner side of the elastic groove (13), and a guide column is provided at the inner side end of the clamping block (12), and the spring (14) is sleeved on the outer side of the guide column.

5. The screw head shaping fixture according to claim 1, characterized in that: An arc-shaped groove is provided on the opposite side of the clamp block (12), and a rubber pad is provided on the inner groove wall of the arc-shaped groove. A first sliding block (15) is connected to the outer side of the clamp block (12), and the first sliding block (15) is slidably connected to the inner groove wall of the elastic groove (13).

6. The screw head shaping fixture according to claim 1, characterized in that: The mounting hole (11) is configured as a rectangular hole structure, the width of the mounting hole (11) is smaller than the width of the outer end surface of the clamp ring (1), and the area of ​​the mounting hole (11) is smaller than the pressing piece (16).

7. The screw head shaping fixture according to claim 1, characterized in that: The pressing member (16) comprises a moving block (161), and a squeezing block (162) is fixed on a side of the moving block (161) facing the clamping block (12), and a second sliding block (17) is connected to an outer wall of the moving block (161), and the second sliding block (17) is slidably connected to a limiting groove provided on an inner wall of the mounting hole (11).

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