A balancing block grinding plane clamping jig in a metal injection molding process

Abstract

This utility model discloses a balance block grinding surface clamping fixture for metal injection molding process, including a clamping assembly and a base. The clamping assembly is movably mounted on top of the base. The clamping assembly includes a rectangular support plate, and a clamping plate is screwed onto the upper surface of the support plate. The clamping plate has multiple placement holes in the middle. By setting the clamping assembly and the base together, the fixture is placed in the placement holes for grinding when grinding products. This not only ensures the flatness of batch grinding and optimizes product quality, but also facilitates product handling and improves grinding efficiency. At the same time, a dust removal assembly is set on the support plate, so that the positioning pin can enter the mounting groove and recess through the guide hole and contact the protrusion. The protrusion pushes the support shell upward into the placement hole. The support shell can push out the product and also push out the grinding debris that falls into the placement hole, which not only facilitates the cleaning of debris, but also facilitates subsequent use.

Description

Technical Field

[0001] This utility model belongs to the field of clamping fixture technology, specifically relating to a balance block grinding surface clamping fixture in metal injection molding process. Background Technology

[0002] Metal powder injection molding (MIM) is a new type of near-net-shape forming technology in powder metallurgy that combines modern plastic injection molding technology with traditional powder metallurgy processes.

[0003] The product is produced by injection molding, so the condition of the mold is closely related to the quality of the product. However, for products with relatively thin walls, flow lines are easily generated during the injection sintering process. This is determined by the characteristics of the MIM process. In most cases, it is necessary to polish the product surface with subsequent grinding. Therefore, a balance block grinding surface clamping fixture is designed in the metal injection molding process to change the above technical defects. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a balance block grinding surface clamping fixture in the metal injection molding process to solve the above-mentioned technical problems.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a balance block grinding surface clamping fixture for metal injection molding process, including a clamping assembly and a base. The clamping assembly is movably installed above the base. The clamping assembly includes a rectangular support plate. The upper surface of the support plate is fitted with a clamping plate by screws. The clamping plate has multiple placement holes in the middle. The product body is placed inside the placement holes. A dust removal assembly is provided at the top center of the support plate, corresponding to the position of the product body. A guide hole is provided at the bottom center of the support plate, corresponding to the position of the dust removal assembly.

[0008] Preferably, the base includes a base plate, and a plurality of positioning pins are embedded inside the base plate. The upper end of the positioning pin is slidably connected to the guide hole and in contact with the dust removal component.

[0009] Furthermore, the plurality of placement holes are distributed at equal intervals, and threaded holes are provided at the four corners of the top of the support plate.

[0010] Furthermore, the dust removal component includes a mounting groove, which is located at the top of the support plate. A support shell is slidably connected inside the mounting groove. A groove is provided inside the bottom end of the support shell. A protrusion is integrally formed on the inner top wall of the groove. Springs are provided inside the groove and on both sides of the protrusion.

[0011] Furthermore, the shape and size of the mounting groove are the same as those of the placement hole, the upper end of the support shell is slidably connected to the placement hole, the mounting groove is connected to the guide hole, and the protrusion corresponds to the positioning pin.

[0012] Furthermore, the upper surface of the support shell is flush with the upper surface of the support plate, the upper surface of the support shell is in contact with the lower surface of the product body, and the thickness of the support shell is not less than the thickness of the product body.

[0013] Furthermore, the length of the upper end of the positioning pin is not greater than the thickness of the support plate, and the top and bottom ends of the spring are respectively fixedly connected to the inner top wall of the groove and the inner bottom wall of the mounting groove.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention, through the combination of a clamping assembly and a base, allows the grinding tool to be placed in the placement hole for grinding, ensuring the flatness of batch grinding, optimizing product quality, facilitating product handling, and improving grinding efficiency. Simultaneously, a dust removal assembly is installed on the support plate, allowing the positioning pin to enter the mounting groove and recess through the guide hole and contact the protrusion. The protrusion then pushes the support shell upwards into the placement hole. The support shell not only pushes the product out but also removes grinding debris that falls into the placement hole, facilitating debris cleaning and subsequent use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the clamping fixture in this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the clamping fixture in this utility model;

[0019] Figure 3 This is a top view of the clamping fixture in this utility model;

[0020] Figure 4 In this utility model Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 5 This is an exploded view of the clamping component in this utility model;

[0022] Figure 6 In this utility model Figure 4 Enlarged structural diagram at point B.

[0023] The markings in the attached diagram are as follows: 1. Support plate; 2. Clamping plate; 3. Screw; 4. Placement hole; 5. Base plate; 6. Positioning pin; 7. Product body; 8. Guide hole; 9. Threaded hole; 10. Mounting groove; 11. Support shell; 12. Groove; 13. Protrusion; 14. Spring. Detailed Implementation

[0024] This specific embodiment is a balance block grinding surface clamping fixture in a metal injection molding process, and its structural schematic diagram is shown below. Figures 1-6 As shown, the device includes a clamping assembly and a base. The clamping assembly is movably mounted on top of the base. The clamping assembly includes a rectangular support plate 1. A clamping plate 2 is mounted on the upper surface of the support plate 1 by screws 3. The clamping plate 2 has multiple placement holes 4 in the middle. The product body 7 is placed inside the placement holes 4. A dust removal assembly is provided at the top center of the support plate 1, corresponding to the position of the product body 7. A guide hole 8 is provided at the bottom center of the support plate 1, corresponding to the position of the dust removal assembly.

[0025] Specifically, during use, multiple dust removal components are first installed on the support plate 1. Then, the four corners of the clamping plate 2 are screwed onto the support plate 1. The injection-sintered product body 7 is then placed in the placement hole 4 with the side with flow lines facing upwards. At this time, the product body 7 is transferred to the grinding station for grinding through the support plate 1. After grinding, the support plate 1 is placed on the base for unloading. At the same time, the base, in conjunction with the dust removal components, can clean out the flow line debris that falls into the placement hole 4, so as to facilitate subsequent grinding.

[0026] In addition, the base includes a base plate 5, and a plurality of positioning pins 6 are embedded inside the base plate 5. The upper end of the positioning pin 6 is slidably connected to the guide hole 8 and contacts the dust removal component. The number of positioning pins 6 is equal to the number of product bodies 7. By aligning the guide hole 8 on the support plate 1 with the positioning pin 6 and inserting it, the upper end of the positioning pin 6 is inserted into the guide hole 8 and contacts the dust removal component, so that the product body 7 is pushed out of the placement hole 4 and the debris entering the placement hole 4 is cleaned.

[0027] In addition, multiple placement holes 4 are distributed at equal intervals, and threaded holes 9 are provided at the four corners of the top of the support plate 1; the shape of the placement holes 4 is processed according to the shape of the product, so that the placement holes 4 fill the entire clamping plate 2, which not only facilitates the handling of multiple product bodies 7, but also optimizes the quality of the product bodies 7 and improves production efficiency.

[0028] In addition, the dust removal component includes a mounting groove 10, which is located at the top of the support plate 1. A support shell 11 is slidably connected inside the mounting groove 10. A groove 12 is provided inside the bottom end of the support shell 11. A protrusion 13 is integrally formed on the inner top wall of the groove 12. Springs 14 are provided inside the groove 12 and on both sides of the protrusion 13. The support shell 11 can slide in the mounting groove 10, so that when the support shell 11 moves upward, it can push out the product body 7 and stretch the springs 14. At the same time, the support shell 11 can push out the debris that falls into its top and the side wall of the placement hole 4. After the product body 7 is taken out, the debris can be removed without dead angles, which is convenient for subsequent use. At the same time, without external force, the support shell 11 can always be located in the mounting groove 10 under the action of the springs 14.

[0029] Furthermore, the shape and size of the mounting groove 10 are the same as those of the placement hole 4. The upper end of the support shell 11 is slidably connected to the placement hole 4. The mounting groove 10 is connected to the guide hole 8. The protrusion 13 corresponds to the positioning pin 6. After the positioning pin 6 is inserted into the guide hole 8, it can contact the protrusion 13 and push the support shell 11 upward through the protrusion 13. When the support shell 11 moves upward, it can enter the placement hole 4 and slide to connect with it. Thus, the support shell 11 can push out the debris of the product body 7 and the inner wall of the placement hole 4 at the same time.

[0030] Furthermore, the upper surface of the support shell 11 is flush with the upper surface of the support plate 1, and the upper surface of the support shell 11 is in contact with the lower surface of the product body 7. The thickness of the support shell 11 is not less than the thickness of the product body 7. When the bottom of the support plate 1 is in contact with the top of the base plate 5, the top of the positioning pin 6 can push the support shell 11 upward and into the placement hole 4. At this time, the upper surface of the support shell 11 is not lower than the upper surface of the clamping plate 2. After the product body 7 is removed, the debris on the top of the support shell 11 and the upper surface of the clamping plate 2 can be cleaned and collected by brush or other tools for subsequent use.

[0031] In addition, the length of the upper end of the positioning pin 6 is not greater than the thickness of the support plate 1. The top and bottom ends of the spring 14 are fixedly connected to the inner top wall of the groove 12 and the inner bottom wall of the mounting groove 10, respectively. When the support plate 1 is pulled upward to separate it from the base plate 5, the top end of the positioning pin 6 can gradually disengage from the mounting groove 10. At the same time, under the action of the spring 14, the support shell 11 can move downward as the positioning pin 6 moves out. When the positioning pin 6 completely disengages from the mounting groove 10, the bottom of the support shell 11 contacts the inner bottom wall of the mounting groove 10, completing the reset for subsequent use.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A balancing block grinding face clamping jig in a metal injection molding process, characterized by, The device includes a clamping assembly and a base. The clamping assembly is movably mounted on top of the base. The clamping assembly includes a rectangular support plate (1). A clamping plate (2) is mounted on the upper surface of the support plate (1) by screws (3). The clamping plate (2) has multiple placement holes (4) in the middle. The product body (7) is placed inside the placement holes (4). A dust removal assembly is provided at the top center of the support plate (1) and at a position corresponding to the product body (7). A guide hole (8) is provided at the bottom center of the support plate (1) and at a position corresponding to the dust removal assembly.

2. The balancing block grinding fixture for metal injection molding process according to claim 1, wherein: The base includes a base plate (5), and a plurality of positioning pins (6) are embedded inside the base plate (5). The upper end of the positioning pin (6) is slidably connected to the guide hole (8) and in contact with the dust removal component.

3. The balancing block grinding fixture for metal injection molding process according to claim 2, wherein: The multiple placement holes (4) are distributed at equal intervals, and threaded holes (9) are provided at the four corners of the top of the support plate (1).

4. The balancing block grinding fixture for metal injection molding process according to claim 3, wherein: The dust removal assembly includes a mounting groove (10), which is located at the top of the support plate (1). A support shell (11) is slidably connected inside the mounting groove (10). A groove (12) is provided inside the bottom end of the support shell (11). A protrusion (13) is integrally formed on the inner top wall of the groove (12). Springs (14) are provided inside the groove (12) and on both sides of the protrusion (13).

5. The balancing block grinding fixture for metal injection molding process according to claim 4, wherein: The shape and size of the mounting groove (10) are the same as those of the placement hole (4). The upper end of the support shell (11) is slidably connected to the placement hole (4). The mounting groove (10) is connected to the guide hole (8). The protrusion (13) corresponds to the positioning pin (6).

6. The balancing block grinding fixture for metal injection molding process according to claim 5, wherein: The upper surface of the support shell (11) is flush with the upper surface of the support plate (1), the upper surface of the support shell (11) is in contact with the lower surface of the product body (7), and the thickness of the support shell (11) is not less than the thickness of the product body (7).

7. The balance block grinding and clamping fixture in a metal injection molding process according to claim 6, characterized in that: The length of the upper end of the positioning pin (6) is not greater than the thickness of the support plate (1), and the top and bottom ends of the spring (14) are fixedly connected to the inner top wall of the groove (12) and the inner bottom wall of the mounting groove (10), respectively.

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