Multi-ejector-pin synchronous grinding jig

Abstract

The utility model discloses a multi-ejector-pin synchronous grinding jig which comprises a jig base, a fixed vertical plate is fixedly installed on one side of the top of the jig base, rotating shafts are rotatably installed on the upper portion of the fixed vertical plate at equal intervals, fixed blocks are fixedly installed at one ends of the rotating shafts, fixed clamping blocks are fixedly installed at the bottoms of one sides of the fixed blocks, and the fixed clamping blocks are fixedly installed at the bottoms of the other sides of the fixed clamping blocks. The upper portion of one side of each fixing block is provided with a movable clamping block capable of being movably adjusted, an ejector pin body is clamped and fixed between the fixed clamping block and the movable clamping block on the same fixing block, the other side of the fixing vertical plate is provided with a motor for driving all the rotating shafts, and the top of the jig base is provided with a cuboid installation base capable of being adjusted in a lifting mode. A cuboid grinding block matched with the cuboid mounting base is fixedly mounted at the top of the cuboid mounting base, and the ejector pin bodies are located above the cuboid grinding block; the grinding jig has the multi-station fixing and synchronous grinding functions and the grinding block lifting adjusting function, and the performance of the grinding jig can meet the ejector pin grinding requirement.

Description

Technical Field

[0001] This utility model belongs to the field of grinding fixture technology, specifically a multi-pin synchronous grinding fixture. Background Technology

[0002] Ejector pins are fasteners or tools used in molds, equipment, and machinery, primarily for positioning and support during processing. They are typically cylindrical or conical metal parts with a certain degree of hardness and wear resistance. In injection molding equipment, ejector pins require surface grinding to ensure a good fit between the ejector pin and the mold and to reduce wear and jamming. Existing grinding equipment can only fix and process one ejector pin at a time, which is inefficient. Furthermore, the grinding wheel contacts the ejector pin too quickly during grinding, causing the ejector pin to break or deform. Therefore, improvements are needed to address these issues. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a multi-ejector synchronous grinding fixture, comprising a fixture base with a cuboid structure, a fixed vertical plate fixedly installed on one side of the top of the fixture base, rotating shafts rotatably installed at equal intervals on the upper part of the fixed vertical plate, a fixed block fixedly installed at one end of each rotating shaft, a fixed clamping block fixedly installed at the bottom of one side of each fixed block, and a movable and adjustable clamping block installed on the upper part of one side of each fixed block, an ejector body clamped and fixed between the fixed clamping block and the movable clamping block on the same fixed block, a motor for driving all rotating shafts installed on the other side of the fixed vertical plate, a height-adjustable cuboid mounting base installed on the top of the fixture base, a matching cuboid grinding block fixedly installed on the top of the cuboid mounting base, and the ejector bodies all located above the cuboid grinding blocks.

[0004] Preferably, the top of each fixed clamping block is provided with a concave arc groove A that matches the ejector pin body, and the bottom of each movable clamping block is provided with a concave arc groove B that matches the ejector pin body. One end of the ejector pin body is movably clamped between the concave arc groove A and the concave arc groove B, thereby effectively clamping and fixing the ejector pin body.

[0005] Preferably, a vertical groove is provided on the upper part of one side of the fixing block, a threaded shaft is rotatably installed inside the vertical groove, a movable sleeve is threadedly connected to the surface of the threaded shaft, a movable clamping block is fixedly installed at one end of the movable sleeve, and the top of the threaded shaft extends to the top of the fixing block and is fixedly installed with a rotating wheel A, so as to effectively adjust and fix the ejector pin body.

[0006] Preferably, the rotation axis coincides with the axis of the ejector pin body.

[0007] Preferably, a worm gear is fixedly installed at the end of the rotating shaft away from the fixed block, and a worm connected to the motor output end is rotatably installed on the other side of the fixed vertical plate. The worms are all meshed with all the worm gears, thereby effectively driving the ejector pin body to rotate.

[0008] Preferably, a fixed frame is fixedly installed on the top of the fixture base, and two sliding rods are fixedly installed inside the fixed frame. Two movable plates are slidably sleeved between the two sliding rods. The top ends of the two movable plates are rotatably connected to the bottom of the cuboid mounting base, thereby enabling the effective installation of the cuboid mounting base.

[0009] Preferably, a bidirectional threaded rod is rotatably installed in the middle of the fixed frame, and the middle parts of the two movable plates are respectively threaded to the two sides of the bidirectional threaded rod. One end of the bidirectional threaded rod extends to one end of the fixed frame and is fixedly installed with a rotating wheel B, thereby effectively adjusting the height of the cuboid grinding block, so that the cuboid grinding block slowly contacts the rotating pin body to perform the grinding operation.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This grinding fixture has multi-station fixing and synchronous grinding functions. It can fix multiple ejector pins in one processing and drive multiple ejector pins to rotate synchronously so that they can perform grinding operations at the same time. In addition, this grinding fixture has a grinding block lifting and adjusting function, so that the grinding block can slowly contact the ejector pins and uniformly grind multiple ejector pins. It also effectively avoids the problem of breakage or deformation caused by the grinding block contacting the ejector pins too quickly. At the same time, this grinding fixture has a simple structural design, is convenient to use and operate, and is stable and reliable in fixing and grinding. Its performance can meet the usage requirements of ejector pin grinding processing. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram:

[0013] Figure 1 This is a front view structural diagram of the multi-pin synchronous grinding fixture of this utility model;

[0014] Figure 2 This utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0015] Figure 3 This utility model Figure 2 A partial structural diagram;

[0016] In the diagram: 1. Fixture base; 2. Fixed vertical plate; 3. Rotating shaft; 4. Fixed block; 5. Fixed clamping block; 6. Movable clamping block; 7. Ejector pin body; 8. Motor; 9. Cuboid mounting base; 10. Cuboid grinding block; 11. Concave arc groove A; 12. Concave arc groove B; 13. Vertical groove; 14. Threaded shaft; 15. Moving sleeve; 16. Rotary wheel A; 17. Worm gear; 18. Worm; 19. Fixed frame; 20. Slide rod; 21. Moving plate; 22. Ejector rod; 23. Bidirectional threaded rod; 24. Rotary wheel B. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Depend on Figures 1 to 3 The present invention includes a fixture base 1 with a cuboid structure. A fixed vertical plate 2 is fixedly installed on one side of the top of the fixture base 1. Rotating shafts 3 are rotatably installed at equal intervals on the upper part of the fixed vertical plate 2. A fixed block 4 is fixedly installed at one end of each rotating shaft 3. A fixed clamping block 5 is fixedly installed at the bottom of one side of each fixed block 4. An adjustable movable clamping block 6 is installed on the upper part of one side of each fixed block 4. A pin body 7 is clamped and fixed between the fixed clamping block 5 and the movable clamping block 6 on the same fixed block 4. A motor 8 for driving all rotating shafts 3 is installed on the other side of the fixed vertical plate 2. A cuboid mounting base 9 with adjustable height is installed on the top of the fixture base 1. A matching cuboid grinding block 10 is fixedly installed on the top of the cuboid mounting base 9. The pin bodies 7 are all located above the cuboid grinding block 10.

[0019] The top of each fixed clamping block 5 is provided with a concave arc groove A11 that matches the ejector pin body 7, and the bottom of each movable clamping block 6 is provided with a concave arc groove B12 that matches the ejector pin body 7. One end of the ejector pin body 7 is movably clamped between the concave arc groove A11 and the concave arc groove B12, thereby effectively clamping and fixing the ejector pin body 7. A vertical groove 13 is provided on the upper part of one side of the fixed block 4. A threaded shaft 14 is rotatably installed inside the vertical groove 13. A movable sleeve 15 is threadedly connected to the surface of the threaded shaft 14. The movable clamping block 6 is fixedly installed on one end of the movable sleeve 15. The top of the threaded shaft 14 extends to the top of the fixed block 4 and is fixedly installed with a rotating wheel A16, thereby effectively adjusting and fixing the ejector pin body 7.

[0020] By placing one end of the ejector pin body 7 inside the concave arc groove A11, and then rotating the rotating wheel A16 to rotate the threaded shaft 14, the rotation of the threaded shaft 14 will cause the movable sleeve 15 to drive the movable clamping block 6 to move downward, so that the movable clamping block 6 can clamp and fix the ejector pin body 7 by cooperating with the concave arc groove B12 and the concave arc groove A11.

[0021] The axis of rotation 3 coincides with the axis of the ejector body 7. The above can only clamp the ejector body 7 of a specified diameter and drive the ejector body 7 of a specified diameter to perform stable rotational grinding operation by rotating the axis of rotation 3.

[0022] When it is necessary to clamp ejector bodies 7 of different diameters, the fixed block 4, the fixed clamping block 5, and the movable clamping block 6 need to be adjusted so that a long vertical groove is opened on one side of the fixed block 4. The long vertical groove is symmetrically arranged through the rotating shaft 3. A bidirectional threaded shaft is rotatably installed inside the long vertical groove. The two sides of the bidirectional threaded shaft are symmetrically threaded with movable sleeves. The fixed clamping block 5 and the movable clamping block 6 are respectively fixedly installed on one side of the two movable sleeves. The opposite sides of the fixed clamping block 5 and the movable clamping block 6 are provided with arc-shaped grooves for clamping the ejector body 7. At this time, the fixed clamping block 5 and the movable clamping block 6 can clamp ejector bodies 7 of different diameters, and the rotation of the rotating shaft 3 can drive the ejector body 7 to perform a stable rotational grinding operation.

[0023] Worm gears 17 are fixedly installed on the end of the rotating shaft 3 away from the fixed block 4. Worm 18 connected to the output end of motor 8 is rotatably installed on the other side of the fixed vertical plate 2. Worm 18 is meshed with all the worm gears 17, so as to effectively drive the ejector body 7 to rotate.

[0024] By starting the motor 8, the worm 18 is rotated. The rotation of the worm 18 will drive all the worm wheels 17 to rotate, which in turn drives all the rotating shafts 3 to rotate. The rotation of the rotating shafts 3 will drive the ejector body 7 to rotate through the fixed block 4, the fixed clamping block 5 and the movable clamping block 6.

[0025] A fixed frame 19 is fixedly installed on the top of the fixture base 1. Two sliding rods 20 are fixedly installed inside the fixed frame 19. Two movable plates 21 are slidably sleeved between the two sliding rods 20. The top ends of the two movable plates 21 are rotatably connected to the bottom of the cuboid mounting base 9, thereby enabling the effective installation of the cuboid mounting base 9. A bidirectional threaded rod 23 is rotatably installed in the middle of the fixed frame 19. The middle parts of the two movable plates 21 are respectively threaded to the two sides of the bidirectional threaded rod 23. One end of the bidirectional threaded rod 23 extends to one end of the fixed frame 19 and is fixedly installed with a rotating wheel B24, thereby enabling the effective adjustment of the cuboid grinding block 10 in height, so that the cuboid grinding block 10 slowly contacts the rotating ejector pin body 7 for grinding.

[0026] The bidirectional threaded rod 23 is rotated by the rotating wheel B24. The rotation of the bidirectional threaded rod 23 causes the two moving plates 21 to move relative to each other. The two moving plates 21, which move relative to each other, push the cuboid mounting base 9 and the cuboid grinding block 10 upward through the four push rods 22, so that the cuboid grinding block 10 performs surface grinding operation on the fully rotating pin body 7. After one end of the pin body 7 is ground, the other end of the pin body 7 is switched and the grinding operation is performed again.

[0027] This grinding fixture features multi-station fixing and synchronous grinding functions. It can fix multiple ejector pins in one processing cycle and simultaneously drive them to rotate for synchronous grinding. Furthermore, the fixture has a grinding block lifting and adjusting function, allowing the grinding block to slowly contact the ejector pins for even grinding, effectively preventing breakage or deformation caused by excessively rapid contact. The fixture also boasts a simple structural design, convenient use and operation, and stable and reliable fixing and grinding, meeting the performance requirements for ejector pin grinding.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-pin synchronous lapping jig comprising a jig base (1) in a cuboid structure, characterized in that: The side of the top of the jig base (1) is fixedly provided with a fixed vertical plate (2), the upper part of the fixed vertical plate (2) is rotatably provided with a rotating shaft (3), one end of the rotating shaft (3) is fixedly provided with a fixed block (4), the bottom of one side of the fixed block (4) is fixedly provided with a fixed clamping block (5), the upper part of one side of the fixed block (4) is provided with a movable adjusting movable clamping block (6), the fixed clamping block (5) and the movable clamping block (6) on the same fixed block (4) are clamped and fixed with a thimble body (7), the other side of the fixed vertical plate (2) is provided with a motor (8) for driving all the rotating shafts (3), the top of the jig base (1) is provided with a cuboid mounting seat (9) which can be adjusted in lifting, the top of the cuboid mounting seat (9) is fixedly provided with a cuboid grinding block (10) matched therewith, and the thimble body (7) is located above the cuboid grinding block (10).

2. The multi-pin synchronous lapping fixture of claim 1, wherein: The top of the fixed clamping block (5) is provided with a concave arc clamping groove A (11) matched with the thimble body (7), the bottom of the movable clamping block (6) is provided with a concave arc clamping groove B (12) matched with the thimble body (7), and one end of the thimble body (7) is movably clamped between the concave arc clamping groove A (11) and the concave arc clamping groove B (12).

3. The multi-pin synchronous lapping fixture of claim 2, wherein: The upper part of one side of the fixed block (4) is provided with a vertical recess (13), the inside of the vertical recess (13) is rotatably provided with a threaded shaft (14), the surface of the threaded shaft (14) is threadedly connected with a moving sleeve (15), the movable clamping block (6) is fixedly installed at one end of the moving sleeve (15), and the top of the threaded shaft (14) extends above the fixed block (4) and is fixedly provided with a rotating wheel A (16).

4. The multi-pin synchronous lapping fixture of claim 3, wherein: The rotating shaft (3) is coaxial with the axis of the thimble body (7).

5. The multi-pin synchronous lapping fixture of claim 1, wherein: One end of the rotating shaft (3) away from the fixed block (4) is fixedly provided with a worm wheel (17), the other side of the fixed vertical plate (2) is rotatably provided with a worm gear (18) connected with the output end of the motor (8), and the worm gear (18) is meshedly connected with all the worm wheels (17).

6. The multi-pin synchronous lapping fixture of claim 1, wherein: The top of the jig base (1) is fixedly provided with a fixed frame (19), the inside of the fixed frame (19) is fixedly provided with two sliding rods (20), two moving plates (21) are slidably sleeved between the two sliding rods (20), and two top rods (22) are rotatably connected between the top of both ends of the two moving plates (21) and the bottom of the cuboid mounting seat (9).

7. The multi-pin synchronous lapping fixture of claim 6, wherein: The middle part of the fixed frame (19) is rotatably provided with a bidirectional threaded rod (23), the middle parts of the two moving plates (21) are threadedly connected with the two sides of the bidirectional threaded rod (23), and one end of the bidirectional threaded rod (23) extends out of one end of the fixed frame (19) and is fixedly provided with a rotating wheel B (24).

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