Reshaping press for metal injection molding degreased blank

Abstract

The utility model relates to the technical field of shaping presses, in particular to a shaping press for a metal injection molding degreased blank, which comprises a press main body, the press main body comprises a machine body, a moving cavity arranged in the machine body and a moving groove arranged on a working table of the machine body and communicated with the moving cavity, and a shaping part is arranged on the machine body; the clamping mechanism comprises two sets of moving seats arranged in the moving groove in a sliding mode, positioning plates are arranged at the tops of the moving seats, fixing pieces used for fixing the positioning plates to the top positions of the moving seats are installed on the moving seats, and clamping plates are arranged at the tops of the ends, close to each other, of the two sets of positioning plates; according to the clamping mechanism, the blank is fixed through the movable base and the clamping plate, centering positioning of the blank can be achieved, the height of the clamping plate is adjusted through the adjusting mechanism, the blank is clamped, pressed and fixed through the clamping plate, the position of the clamping plate can be finely adjusted, the clamping requirements of the blanks of different sizes are met, the fixing mode is simple and reliable, and the clamping efficiency is high. The adjusting efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of shaping press technology, specifically a shaping press for degreased blanks from metal injection molding. Background Technology

[0002] In metal injection molding (MIM) processes, degreased preforms shrink and deform due to binder evaporation during degreasing, leading to inconsistent dimensional accuracy and shape that fail to meet subsequent sintering and finished product requirements. The shaping press, as a core post-processing device, precisely applies pressure to shape the degreased preforms, a crucial step in ensuring the final accuracy of MIM products and reducing scrap rates. For some pipe fittings and connector preforms, inner hole roundness deviations exceeding design requirements can cause uneven contact at mating surfaces, exacerbating localized wear and shortening part lifespan. Shaping can control the inner hole dimensions within design tolerances.

[0003] The existing patent publication number CN211757763U discloses an internal hole shaping press, which includes a frame and an expansion spring arranged on the worktable of the frame. The expansion spring is in the shape of a straight cylindrical shape with its axis arranged vertically. The top surface of the expansion spring has a radial groove extending vertically downward, and the extension line of the radial groove in the length direction passes through the axis of the expansion spring. There are two or more sets of radial grooves, which are evenly distributed along the circumference of the expansion spring. The top surface of the expansion spring and the shoulder of the valve sleeve form a stop fit relationship. The ovality of the inner hole of the product is corrected by shaping, so that the inner hole size meets the requirements, thereby avoiding subsequent machining processes.

[0004] In the aforementioned forming press, the inner hole can be shaped using the forming part. However, during the forming process, the workpiece is prone to axial or radial displacement due to the expansion force of the expansion spring or external force. The workpiece relies solely on its own weight and the contact of the stop, and the stability of the workpiece during forming still needs improvement. To address these issues, a forming press for degreased blanks in metal injection molding is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a shaping press for degreased blanks from metal injection molding, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A shaping press for degreased metal injection molded preforms, comprising:

[0008] The press body includes a machine body, a movable cavity disposed within the machine body, and a movable slot disposed on the machine body worktable and communicating with the movable cavity; a shaping component is mounted on the machine body.

[0009] The clamping mechanism includes two sets of movable seats that are slidably disposed in a movable groove. The top of each movable seat is provided with a positioning plate. A fixing member for fixing the positioning plate at the top position of the movable seat is installed on the movable seat. The top of each set of positioning plates that are close to one end is provided with a clamping plate. The bottom of the clamping plate is connected to a square rod that slides with the positioning plate.

[0010] The moving mechanism installed inside the moving cavity is used to adjust the relative movement of the two sets of moving seats;

[0011] The mechanism includes an adjusting rod and a limiting groove on the adjusting rod. The bottom end of the square rod is connected to a limiting block that can slide horizontally within the limiting groove. An adjusting component for adjusting the height of the adjusting rod is installed on the body.

[0012] In one alternative: the fastener includes a positioning bolt threaded to the top of the movable seat, and the positioning plate has a strip hole for the bolt rod to pass through.

[0013] In one alternative: the inner wall of the movable slot is provided with a guide groove, and the outer wall of the movable seat is provided with a guide strip that cooperates with the guide groove.

[0014] In one alternative embodiment: the moving mechanism is placed inside the moving cavity, the moving mechanism includes a toggle block and two sets of connecting rods rotatably connected to the toggle block, the end of the connecting rod away from the toggle block is rotatably connected to the bottom of the moving seat, a first guide rail is installed inside the machine body, the toggle block is provided with a first guide groove that slides with the first guide rail, a second guide rail is also installed inside the machine body, the moving seat is provided with a second guide groove that slides with the second guide rail, and an electric telescopic rod for pushing and pulling the toggle block to slide along the first guide rail is installed inside the machine body.

[0015] In one alternative: the two sets of connecting rods are symmetrically arranged, with one set of connecting rods rotatably connected to one set of movable seats.

[0016] In one alternative: the adjusting component includes a lead screw threadedly connected to the machine body, the machine body having an adjusting cavity, the top end of the lead screw extending into the moving cavity and rotatably connected to an adjusting rod, and the bottom end of the lead screw extending into the adjusting cavity and fixedly connected to a rotating wheel.

[0017] In one alternative: the shaping component includes a shaping rod disposed on the top of the machine body's worktable, a hydraulic cylinder is mounted on the top of the machine body, and the movable rod at the power output end of the hydraulic cylinder passes through the top of the machine body and connects to the shaping rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this utility model, the clamping mechanism uses a movable seat and a clamping plate to fix the blank, which can achieve the centering positioning of the blank and facilitate the precise shaping of the blank. The adjustment mechanism adjusts the height of the clamping plate, and the clamping plate clamps and presses the blank to fix it. The position of the clamping plate can also be finely adjusted to adapt to the clamping needs of blanks of different sizes. The fixing method is simple and reliable and the adjustment efficiency is high. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the moving mechanism in this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism in this utility model.

[0023] Figure 4 This is a schematic diagram of the clamping mechanism and part of the moving mechanism in this utility model.

[0024] Figure 5 This is a schematic diagram of the clamping mechanism and the adjusting mechanism in this utility model.

[0025] In the diagram: 1. Press body; 2. Clamping mechanism; 3. Moving mechanism; 4. Adjusting mechanism; 11. Machine body; 12. Moving cavity; 13. Moving groove; 14. Adjusting cavity; 15. Shaping rod; 16. Hydraulic cylinder; 21. Moving seat; 22. Second guide groove; 23. Positioning plate; 24. Positioning bolt; 25. Strip hole; 26. Clamping plate; 27. Square rod; 31. Actuating block; 32. Electric telescopic rod; 33. First guide rail; 34. Connecting rod; 35. Second guide rail; 36. First guide groove; 41. Adjusting rod; 42. Limiting groove; 43. Limiting block; 44. Lead screw; 45. Rotary wheel. Detailed Implementation

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 In this embodiment, a shaping press for degreased metal injection molded blanks includes...

[0029] The press body 1 includes a body 11, a movable cavity 12 disposed within the body 11, and a movable slot 13 disposed on the worktable of the body 11 and communicating with the movable cavity 12. A shaping component is installed on the body 11. The body 11 of the press body 1 is the core frame, and the movable cavity 12 and the movable slot 13 provide installation space for other components.

[0030] The clamping mechanism 2 includes two sets of movable seats 21 slidably disposed in the movable groove 13. The top of each movable seat 21 is provided with a positioning plate 23. A fixing member for fixing the positioning plate 23 at the top position of the movable seat 21 is installed on the movable seat 21. The top of each set of positioning plates 23 at one end close to each other is provided with a clamping plate 26. The bottom of the clamping plate 26 is connected to a square rod 27 that slides with the positioning plate 23. The clamping mechanism 2 fixes the blank through the movable seats 21 and the clamping plates 26.

[0031] The moving mechanism 3, installed in the moving cavity 12, is used to adjust the two sets of moving seats 21 to move towards each other; the moving mechanism 3 drives the opening and closing of the clamping mechanism 2.

[0032] The adjustment mechanism 4 includes an adjustment rod 41 and a limiting groove 42 provided on the adjustment rod 41. The bottom end of the square rod 27 is connected to a limiting block 43 that can slide horizontally within the limiting groove 42. An adjustment component for adjusting the height of the adjustment rod 41 is installed on the machine body 11. The adjustment mechanism 4 adjusts the height of the clamping plate 26, and the clamping plate 26 clamps and presses the blank to fix it.

[0033] Please see Figure 4 The fixing component includes a positioning bolt 24 threadedly connected to the top of the movable seat 21. The positioning plate 23 is provided with a strip hole 25 for the positioning bolt 24 to pass through. Specifically, after the positioning bolt 24 is loosened, the positioning plate 23 can be adjusted to move. The positioning bolt 24 passes through the strip hole 25 of the positioning plate 23 and is threadedly connected to the movable seat 21. The position of the positioning plate 23 is fixed by tightening the bolt. After loosening, the horizontal position of the positioning plate 23 can be adjusted along the strip hole 25 to adapt to the clamping requirements of blanks of different sizes. The fixing method is simple and reliable and the adjustment efficiency is high.

[0034] Furthermore, the inner wall of the moving groove 13 is provided with a guide groove, and the outer wall of the moving seat 21 is provided with a guide strip that cooperates with the guide groove. Specifically, the guide groove on the inner wall of the moving groove 13 and the guide strip on the outer wall of the moving seat 21 slide in cooperation, restricting the movement direction of the moving seat 21 and only allowing it to slide horizontally along the moving groove 13, ensuring that the moving seat 21 moves smoothly, avoiding deviation or jamming, improving the positioning accuracy of the clamping mechanism 2, and reducing the blank forming error.

[0035] Please see Figure 2 The moving mechanism 3 is placed inside the moving cavity 12. The moving mechanism 3 includes a toggle block 31 and two sets of connecting rods 34 rotatably connected to the toggle block 31. The end of the connecting rod 34 away from the toggle block 31 is rotatably connected to the bottom of the moving seat 21. A first guide rail 33 is installed inside the body 11. The toggle block 31 is provided with a first guide groove 36 that slides with the first guide rail 33. A second guide rail 35 is also installed inside the body 11. The moving seat 21 is provided with a second guide groove 22 that slides with the second guide rail 35. An electric telescopic rod 32 for pushing and pulling the toggle block 31 to slide along the first guide rail 33 is installed inside the body 11. Specifically, the electric telescopic rod 32 pushes and pulls the toggle block 31 to slide along the first guide rail 33. The toggle block 31 drives the moving seat 21 to move in opposite directions along the second guide rail 35 through the two sets of connecting rods 34. The first guide groove 36 and the second guide groove 22 respectively assist the stable sliding of the toggle block 31 and the moving seat 21.

[0036] Please see Figure 2 or Figure 4 The two sets of connecting rods 34 are symmetrically arranged, and one set of connecting rods 34 is rotatably connected to one set of movable seats 21. Specifically, the two sets of connecting rods 34 are symmetrically distributed with the actuating block 31 as the center, and each set of connecting rods 34 is individually connected to a movable seat 21 to ensure that the thrust of the actuating block 31 is evenly transmitted to the movable seats 21 on both sides. The symmetrical design of the connecting rods 34 makes the movement of the two sets of movable seats 21 highly synchronized and the clamping force uniform, so that the blank is centered and positioned.

[0037] Please see Figure 3 and Figure 5The adjusting component includes a lead screw 44 threaded onto the machine body 11. The machine body 11 has an adjusting cavity 14. The top end of the lead screw 44 extends into the moving cavity 12 and is rotatably connected to an adjusting rod 41. The bottom end of the lead screw 44 extends into the adjusting cavity 14 and is fixedly connected to a rotating wheel 45. Specifically, rotating the rotating wheel 45 drives the lead screw 44 to rotate. The lead screw 44 is threaded onto the machine body 11, converting the rotational motion into axial movement, which in turn drives the adjusting rod 41 to rise or fall. The square rod 27 slides at the end of the positioning plate 23, thereby adjusting the height of the clamping plate 26. When the distance between the two sets of clamping plates 26 changes, the limiting block 43 slides within the limiting groove 42, without affecting the height adjustment of the square rod 27 driven by the adjusting rod 41. The rotating wheel 45 is easy to operate within the adjusting cavity 14, facilitating manual rotation.

[0038] Please see Figure 1 The forming component includes a forming rod 15 mounted on the top of the worktable of the machine body 11. A hydraulic cylinder 16 is installed on the top of the machine body 11, and the movable rod at the power output end of the hydraulic cylinder 16 passes through the top of the machine body 11 and connects to the forming rod 15. Specifically, the hydraulic cylinder 16 drives the forming rod 15 to move up and down, cooperating with the blank fixed by the clamping mechanism 2, and the forming process of the blank is completed by the pressure of the forming rod 15. The forming rod 15 acts directly on the blank and can be replaced according to the size of the blank during actual processing.

[0039] The working principle of this utility model is as follows: The degreased metal injection molded blank is placed on the worktable of the machine body 11, between two sets of clamping plates 26. According to the size of the blank to be shaped, the positioning bolt 24 is loosened, and the horizontal position of the positioning plate 23 on the moving seat 21 is adjusted along the strip hole 25 to match the external size of the blank. After the adjustment is completed, the positioning bolt 24 is tightened to fix it. At this time, the clamping plate 26 is not in contact with the blank. The electric telescopic rod 32 is started, and the actuating block 31 is pulled to slide along the first guide rail 33. Through the connecting rod 34, the two sets of moving seats 21 are driven to move towards each other along the second guide rail 35 and the moving groove 13. The moving seat 21 drives the positioning plate 23 and the clamping plate 26 to move synchronously until the clamping plate 26 clamps the blank and the blank is centered. The height of the adjusting rod 41 can be adjusted by rotating the rotating wheel 45 to adjust the clamping plate 26 to press and fix the blank, thus completing the positioning and fixing of the blank. When the hydraulic cylinder 16 is activated, the movable rod at its power output end pushes the forming rod 15 downward, and the forming rod 15 contacts the blank and applies pressure.

[0040] 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 other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A shaping press for degreased blanks from metal injection molding, characterized in that, include The press body (1) includes a machine body (11), a movable cavity (12) disposed in the machine body (11), and a movable groove (13) disposed on the worktable of the machine body (11) and communicating with the movable cavity (12). A shaping component is installed on the machine body (11). The clamping mechanism (2) includes two sets of movable seats (21) slidably disposed in the movable groove (13). The top of the movable seat (21) is provided with a positioning plate (23). The movable seat (21) is provided with a fixing member for fixing the positioning plate (23) at the top of the movable seat (21). The top of the two sets of positioning plates (23) at one end close to each other is provided with a clamping plate (26). The bottom of the clamping plate (26) is connected to a square rod (27) that slides with the positioning plate (23). A moving mechanism (3) installed in the moving cavity (12) is used to adjust the opposing movement of the two sets of moving seats (21); and The adjustment mechanism (4) includes an adjustment rod (41) and a limiting groove (42) provided on the adjustment rod (41). The bottom end of the square rod (27) is connected to a limiting block (43) that can slide horizontally in the limiting groove (42). An adjustment component for adjusting the height of the adjustment rod (41) is installed on the body (11).

2. The shaping press for degreased metal injection molded blanks according to claim 1, characterized in that: The fastener includes a positioning bolt (24) threaded to the top of the movable seat (21), and the positioning plate (23) is provided with a strip hole (25) through which the rod of the positioning bolt (24) passes.

3. The shaping press for degreased metal injection molded blanks according to claim 1, characterized in that: The inner wall of the movable groove (13) is provided with a guide groove, and the outer wall of the movable seat (21) is provided with a guide strip that cooperates with the guide groove.

4. A shaping press for degreased metal injection molded blanks according to claim 1, characterized in that: The moving mechanism (3) is placed in the moving cavity (12). The moving mechanism (3) includes a toggle block (31) and two sets of connecting rods (34) rotatably connected to the toggle block (31). The end of the connecting rod (34) away from the toggle block (31) is rotatably connected to the bottom of the moving seat (21). A first guide rail (33) is installed in the body (11). A first guide groove (36) that slides with the first guide rail (33) is provided on the toggle block (31). A second guide rail (35) is also installed in the body (11). A second guide groove (22) that slides with the second guide rail (35) is provided on the moving seat (21). An electric telescopic rod (32) for pushing and pulling the toggle block (31) to slide along the first guide rail (33) is installed in the body (11).

5. A shaping press for degreased metal injection molded blanks according to claim 4, characterized in that: The two sets of connecting rods (34) are arranged symmetrically, and a set of connecting rods (34) is rotatably connected to a set of movable seats (21).

6. A shaping press for degreased metal injection molded blanks according to claim 1, characterized in that: The adjusting component includes a lead screw (44) threaded onto the machine body (11), an adjusting cavity (14) is provided on the machine body (11), the top end of the lead screw (44) extends into the moving cavity (12) and is rotatably connected to an adjusting rod (41), and the bottom end of the lead screw (44) extends into the adjusting cavity (14) and is fixedly connected to a rotating wheel (45).

7. A shaping press for degreased metal injection molded blanks according to claim 1, characterized in that: The shaping component includes a shaping rod (15) set on the top of the worktable of the machine body (11), and a hydraulic cylinder (16) is installed on the top of the machine body (11). The movable rod of the power output end of the hydraulic cylinder (16) passes through the top of the machine body (11) and connects to the shaping rod (15).

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