Workpiece hold-down mechanism

Abstract

The utility model discloses a workpiece hold-down mechanism which comprises an installation seat, fixing plates are symmetrically installed on the top of the installation seat, a fixing rod is horizontally installed between the two fixing plates, a pressing head with an arc-shaped through hole is movably arranged on the circumferential outer wall of the fixing rod in a sleeved mode, and the arc-shaped through hole is formed in the pressing head. A lifting rod moving in the vertical direction is arranged below the arc-shaped through hole, the pressing head is rotationally connected with the lifting rod, the pressing head comprises a rotating part provided with the arc-shaped through hole, a pressing part located on one side of the rotating part and a connecting part arranged below the rotating part, and a shaft rod is arranged between the inner walls of the connecting part; a fixing sleeve is installed at the upper end of the lifting rod and movably arranged on the circumferential outer wall of the shaft rod in a sleeving mode, and a limiting base is arranged below the pressing and holding part and located on one side of the rotating part. According to the workpiece pressing mechanism, materials are pressed and fixed, meanwhile, the action range of the pressing head is reduced, and therefore space resources can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressing and holding fixtures, in particular to a workpiece pressing and holding mechanism. Background Art

[0002] During the processing of the laptop computer shell, it needs to be milled, and during the milling process, a pressing mechanism needs to be used to press and fix the shell.

[0003] After searching, the patent publication number CN220217615U discloses "a simple and reliable hydraulic clamping milling fixture", including a base, a clamping device, and a motion guide device. The base is a groove base, and the clamping device includes two V-blocks corresponding to the corresponding workpieces. The two V-blocks include a moving V-block and a fixed V-block facing the moving V-block. The fixed V-block is fixedly connected to one end of the groove base. The motion guide device includes a pad, a plurality of guide pillars, and a flange. One end of the plurality of guide pillars is respectively fixedly connected to the pad, and the other end of the plurality of guide pillars is movably connected to the other end of the groove base. The flange is connected between the pad and the piston rod of the hydraulic cylinder, and the moving V-block is fixedly connected to the pad. The device is simple to operate and has high processing efficiency.

[0004] In the prior art, the material can be fixed by the linear motion of the fixing mechanism to abut against the material. However, when the linear motion fixing mechanism is working, the displacement space it requires is too large, which is not conducive to the design requirements of a small space. Utility Model Content

[0005] The utility model aims to provide a workpiece pressing and holding mechanism, which can reduce the movement amplitude of the pressing head while realizing pressing and fixing of materials, thereby facilitating saving of space resources.

[0006] To achieve the above object, the technical solution adopted by the utility model is: a workpiece holding mechanism, comprising: a mounting seat, a fixing plate is symmetrically mounted on the top of the mounting seat, and a fixing rod is horizontally mounted between the two fixing plates;

[0007] A pressure head with an arc-shaped through hole is movably sleeved on the circumferential outer wall of the fixed rod, a lifting rod moving along the vertical direction is arranged below the arc-shaped through hole, and the pressure head is rotatably connected to the lifting rod.

[0008] The further improved scheme in the above technical scheme is as follows:

[0009] 1. In the above solution, the pressure head includes: a rotating part with the arc-shaped through hole, a holding part located on one side of the rotating part, and a connecting part arranged below the rotating part.

[0010] 2. In the above scheme, a shaft rod is arranged between the inner walls of the connecting part, a fixing sleeve is installed on the upper end of the lifting rod, and the fixing sleeve is movably arranged on the circumferential outer wall of the shaft rod.

[0011] 3. In the above scheme, the rotation angle of the pressure head is 85°~130°.

[0012] 4. In the above solution, a limit seat is arranged below the pressing portion and on one side of the rotating portion.

[0013] 5. In the above scheme, a pad with a limit hole is arranged between the mounting seat and the cylinder, the mounting seat is provided with a mounting hole corresponding to the limit hole, and a positioning pin can be embedded in the mounting hole and the limit hole.

[0014] 6. In the above solution, a cylinder is arranged below the mounting seat, and the movable end of the cylinder can penetrate the mounting seat and be fixedly connected to the lifting rod to drive the lifting rod to move up and down.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The utility model discloses a workpiece holding mechanism, in which a fixing rod is horizontally installed between two fixing plates, a pressing head with an arc-shaped through hole is movably sleeved on the circumferential outer wall of the fixing rod, a lifting rod which moves in the vertical direction is arranged below the arc-shaped through hole, and the pressing head is rotatably connected with the lifting rod, and the arc-shaped through hole of the pressing head of the fixing rod is relatively displaced during the upward and downward movement of the lifting rod, and the pressing head is flipped under the guidance of the arc-shaped through hole, so that the pressing head can be rotated to press or rotate to open the material, and the movement amplitude of the pressing head is reduced while pressing and fixing the material, which is conducive to saving space resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is a schematic diagram of the overall structure of the workpiece holding mechanism of the utility model;

[0018] Attached Figure 2 The cross-sectional structure of the workpiece holding mechanism of the utility model is shown in FIG. Figure 1 ;

[0019] Attached Figure 3 The cross-sectional structure of the workpiece holding mechanism of the utility model is shown in FIG. Figure 2 .

[0020] In the above figures: 1. mounting seat; 101. mounting hole; 2. fixing plate; 3. pressure head; 301. pressing part; 302. connecting part; 303. rotating part; 4. fixing rod; 5. lifting rod; 6. arc-shaped through hole; 7. cylinder; 8. fixing sleeve; 9. shaft rod; 10. limiting seat; 11. raising block; 12. limiting hole; 13. positioning pin. DETAILED DESCRIPTION

[0021] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0022] Embodiment 1: A workpiece holding mechanism comprises: a mounting seat 1, a fixing plate 2 is symmetrically mounted on the top of the mounting seat 1, and a fixing rod 4 is horizontally mounted between the two fixing plates 2;

[0023] A pressure head 3 having an arc-shaped through hole 6 is movably sleeved on the circumferential outer wall of the fixed rod 4, and a lifting rod 5 moving along the vertical direction is arranged below the arc-shaped through hole 6, and the pressure head 3 is rotatably connected to the lifting rod 5;

[0024] Start the cylinder, and the cylinder drives the fixed movement through the lifting rod, and the fixed sleeve drives the pressure head to move through the shaft rod. When the pressure head moves, the fixed rod can move along the arc-shaped through hole inside the pressure head, and the pressure head and the fixed sleeve are rotatably connected through the shaft rod. When the lifting rod moves, the fixed rod moves along the arc-shaped through hole, so that the pressure head can be rotated to open or close, and the material is pressed tightly through the holding part.

[0025] The pressing head 3 comprises a rotating portion 303 with the arc-shaped through hole 6 , a pressing portion 301 located at one side of the rotating portion 303 , and a connecting portion 302 disposed below the rotating portion 303 .

[0026] A shaft rod 9 is disposed between the inner walls of the connecting portion 302 , a fixing sleeve 8 is installed on the upper end of the lifting rod 5 , and the fixing sleeve 8 is movably sleeved on the circumferential outer wall of the shaft rod 9 .

[0027] The rotation angle of the pressure head 3 is 95°.

[0028] A limiting seat 10 is disposed below the pressing portion 301 and on one side of the rotating portion 303 .

[0029] A cylinder 7 is disposed below the mounting seat 1 , and a movable end of the cylinder 7 can penetrate the mounting seat 1 and be fixedly connected to the lifting rod 5 to drive the lifting rod 5 to move up and down.

[0030] A pad block 11 with a limit hole 12 is provided between the mounting seat 1 and the cylinder 7. The mounting seat 1 is provided with a mounting hole 101 corresponding to the limit hole 12. A positioning pin 13 can be embedded in the mounting hole 101 and the limit hole 12.

[0031] Embodiment 2: A workpiece holding mechanism comprises: a mounting seat 1, a fixing plate 2 is symmetrically mounted on the top of the mounting seat 1, and a fixing rod 4 is horizontally mounted between the two fixing plates 2;

[0032] A pressure head 3 having an arc-shaped through hole 6 is movably sleeved on the circumferential outer wall of the fixed rod 4, and a lifting rod 5 moving along the vertical direction is arranged below the arc-shaped through hole 6, and the pressure head 3 is rotatably connected to the lifting rod 5;

[0033] During the up and down movement of the lifting rod, the arc-shaped through hole of the fixed rod pressure head undergoes relative displacement, and the pressure head is flipped under the guidance of the arc-shaped through hole, so that the pressure head can be rotated to press or rotate open the material. While pressing and fixing the material, the movement amplitude of the pressure head is reduced, which is beneficial to saving space resources.

[0034] The pressing head 3 comprises a rotating portion 303 with the arc-shaped through hole 6 , a pressing portion 301 located at one side of the rotating portion 303 , and a connecting portion 302 disposed below the rotating portion 303 .

[0035] A shaft rod 9 is disposed between the inner walls of the connecting portion 302 , a fixing sleeve 8 is installed on the upper end of the lifting rod 5 , and the fixing sleeve 8 is movably sleeved on the circumferential outer wall of the shaft rod 9 .

[0036] The rotation angle of the pressure head 3 is 120°.

[0037] A limiting seat 10 is disposed below the pressing portion 301 and on one side of the rotating portion 303 .

[0038] A cylinder 7 is disposed below the mounting seat 1 , and a movable end of the cylinder 7 can penetrate the mounting seat 1 and be fixedly connected to the lifting rod 5 to drive the lifting rod 5 to move up and down.

[0039] A pad block 11 with a limit hole 12 is provided between the mounting seat 1 and the cylinder 7. The mounting seat 1 is provided with a mounting hole 101 corresponding to the limit hole 12. A positioning pin 13 can be embedded in the mounting hole 101 and the limit hole 12.

[0040] By setting the raising block on the side wall of the workbench and the mounting seat on the raising block, and embedding the positioning pin into the mounting hole of the mounting seat and the limit hole of the raising block, the position accuracy of the mounting seat is greatly improved, the situation of position deviation of the mounting seat and motion interference is reduced, and it is also convenient to level the pressing plane of the limit block, thereby improving the pressing stability of the pressure head.

[0041] The fixing sleeve 8 is sleeved on the outer wall of the shaft rod 9 .

[0042] The working principle is:

[0043] When in use, the cylinder is started, and the cylinder drives the fixed movement through the lifting rod, and the fixed sleeve drives the pressure head to move through the shaft rod. When the pressure head moves, the fixed rod can move along the arc-shaped through hole inside the pressure head, and the pressure head and the fixed sleeve are rotatably connected through the shaft rod. When the lifting rod moves, the fixed rod moves along the arc-shaped through hole, so that the pressure head can be rotated to open or close, and the material is pressed by the holding part;

[0044] The mounting seat is connected to the heightening block by passing the positioning pin through the mounting hole and the limiting hole, so as to facilitate leveling of the pressing plane of the limiting block and improve the pressing stability of the pressure head.

[0045] When the workpiece holding mechanism is used, the arc-shaped through hole of the fixed rod pressure head is relatively displaced during the upward and downward movement of the lifting rod, and the pressure head is flipped under the guidance of the arc-shaped through hole, so that the pressure head is rotated to press the material or rotate it to open it. While pressing and fixing the material, the movement range of the pressure head is reduced, which is conducive to saving space resources.

[0046] In addition, by setting the raising block on the side wall of the workbench and the mounting seat on the raising block, and embedding the positioning pin into the mounting hole of the mounting seat and the limiting hole of the raising block, the position accuracy of the mounting seat is greatly improved, the situation where the mounting seat occurs position deviation and produces motion interference is reduced, and it is also convenient to level the pressing plane of the limiting block, thereby improving the pressing stability of the pressure head.

[0047] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A workpiece holding mechanism, comprising: The mounting seat (1) is characterized in that: a fixing plate (2) is symmetrically mounted on the top of the mounting seat (1), and a fixing rod (4) is horizontally mounted between the two fixing plates (2); A pressure head (3) having an arc-shaped through hole (6) is movably sleeved on the circumferential outer wall of the fixed rod (4), and a lifting rod (5) movable in a vertical direction is provided below the arc-shaped through hole (6), and the pressure head (3) and the lifting rod (5) are rotatably connected.

2. The workpiece holding mechanism according to claim 1, characterized in that: The pressing head (3) comprises: a rotating portion (303) provided with the arc-shaped through hole (6), a holding portion (301) located at one side of the rotating portion (303), and a connecting portion (302) arranged below the rotating portion (303).

3. The workpiece holding mechanism according to claim 2, characterized in that: An axle rod (9) is arranged between the inner walls of the connecting portion (302), a fixing sleeve (8) is installed on the upper end of the lifting rod (5), and the fixing sleeve (8) is movably sleeved on the circumferential outer wall of the axle rod (9).

4. The workpiece holding mechanism according to claim 2, characterized in that: The rotation angle of the pressure head (3) is 85° to 130°.

5. The workpiece holding mechanism according to claim 2, characterized in that: A limiting seat (10) is provided below the pressing portion (301) and on one side of the rotating portion (303).

6. The workpiece holding mechanism according to claim 1, characterized in that: A padding block (11) with a limiting hole (12) is provided between the mounting seat (1) and the cylinder (7); the mounting seat (1) is provided with a mounting hole (101) corresponding to and extending through the limiting hole (12); and a positioning pin (13) can be embedded in the mounting hole (101) and the limiting hole (12).

7. The workpiece holding mechanism according to claim 6, characterized in that: A cylinder (7) is provided below the padding block (11), and a movable end of the cylinder (7) is capable of penetrating the padding block (11) and the mounting seat (1) and being fixedly connected to the lifting rod (5) to drive the lifting rod (5) to move up and down.

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