A pneumatic sizing device for powder metallurgy unit parts

Abstract

The utility model relates to a kind of pneumatic shaping device for powder metallurgy unit parts, including support rack, limit block and shaping assembly, limit block is set to two, and it is connected to the top surface of the support rack, the top surface of the limit block is fixed with and product bottom cavity shape is adapted to the mould core of adaptation;Shaping assembly is connected to the top surface of the support rack, including respectively corresponding to the first push block of two limit block positions and the two second push blocks perpendicular to the orientation of first push block, the first push block is configured to be able to move X reciprocating motion in the direction close to or away from mould core, the first push block is equipped with the fork-like structure matched with product structure groove;The second push block is respectively distributed in the two sides of mould core, and is configured to be able to move Y reciprocating motion in the direction close to or away from mould core.The utility model can realize the automatic shaping of part product, reach the effect that shaping product inner width, outer length, to improve product size, perpendicularity, position degree.

Description

Technical Field

[0001] This utility model relates to the field of MIM shaping fixture technology, specifically a pneumatic shaping device for powder metallurgy unit parts. Background Technology

[0002] Metal Injection Molding (MIM) is a molding method that involves injecting a plasticized mixture of metal powder and its binder into a mold. This method has the advantages of fewer metallurgical processes, less or no cutting, and high economic efficiency. At the same time, it overcomes the main disadvantages of traditional powder metallurgy processes, such as uneven material, low mechanical properties, difficulty in forming thin-walled products, and complex structures. It is suitable for mass production of small, precision, three-dimensional complex shapes, and metal parts with special requirements.

[0003] However, powder metallurgy MIM injection molded parts are prone to structural deformation and dimensional differences during sintering, which affect the appearance quality of the product and require manual correction. Therefore, there is an urgent need for a shaping device that can improve the appearance parameters such as perpendicularity and position of powder metallurgy unit parts. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic shaping device for powder metallurgy unit parts, which can solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pneumatic shaping device for powder metallurgy unit parts includes a support frame, limiting blocks, and a shaping assembly. Two limiting blocks are connected to the top surface of the support frame, and a mold core adapted to the shape of the bottom cavity of the product is fixed to the top surface of each limiting block. The shaping assembly, connected to the top surface of the support frame, includes a first push block corresponding to the positions of the two limiting blocks and two second push blocks perpendicular to the positions of the first push blocks. The first push blocks are configured to reciprocate in the X-direction towards or away from the mold core, and the first push blocks have a fork-shaped structure matching the product's structural groove. The second push blocks are distributed on both sides of the mold core and are configured to reciprocate in the Y-direction towards or away from the mold core.

[0007] In a preferred embodiment, the limiting block is constructed as a horizontally arranged T-shaped structure, including a limiting horizontal end and a limiting vertical end. The limiting horizontal end has a guide channel in the area corresponding to the limiting vertical end, and the mold core is connected to the limiting vertical end.

[0008] In a preferred embodiment, the first push block includes a first connecting end and an insertion end. The first connecting end is connected to a first cylinder, and the insertion end faces the limiting block. The width of the insertion end matches the width of the guide channel. This structure can ensure the movement accuracy of the insertion end, so that it accurately matches the structural groove of the product.

[0009] In a preferred embodiment, the fork-shaped structure consists of two insert teeth on the side of the insertion end facing the mold core, the two insert teeth corresponding to the two ends of the product, and L-shaped recesses corresponding to the structural grooves on both sides of the product are provided on the outer side of the insert teeth along their length direction, the L-shaped recesses being configured to be able to extend into the structural grooves.

[0010] In a preferred embodiment, the length of the insert teeth is greater than the width of the product.

[0011] In a preferred embodiment, the limiting block is provided with at least two sets of second positioning holes with a predetermined depth, the second positioning holes being used to install pins connected to the support frame.

[0012] In a preferred embodiment, the second pusher includes a second connecting end and a pushing end. The second connecting end is connected to a second cylinder. The pushing end is constructed as a concave structure, and its two legs correspond to the mold core positions on the two limiting blocks, respectively.

[0013] In a preferred embodiment, the shaping assembly further includes a pressure plate disposed above the mold core and a rotary pressing cylinder for controlling the pressure plate to rotate and press down, the rotary pressing cylinder being disposed between two limit blocks.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the pneumatic shaping device for powder metallurgy unit parts provided by this utility model can realize the automatic shaping of parts through the cooperation of product limiting blocks and shaping components. The pressure plate, the first push block fork structure that cooperates with the product structure groove and the second push block set in this device can fit the position and structure of the product, so as to achieve the effect of shaping the inner width and outer length of the product, thereby improving the product size, verticality and position. Attached Figure Description

[0015] Figure 1 This is a front view of the pneumatic shaping device for powder metallurgy unit parts in an embodiment of this utility model;

[0016] Figure 2 This is a rear view of the pneumatic shaping device for powder metallurgy unit parts in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram showing the cooperation between the limiting block, the first push block, and the product in an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting block in an embodiment of the present invention;

[0019] Figure 5 This is a cross-sectional view of the limiting block in an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram showing the interaction between the first pusher block and the product in an embodiment of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the second pusher block in an embodiment of this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Support frame; 2. Limiting block; 21. Horizontal limiting end; 22. Vertical limiting end; 23. Guide channel; 24. Mold core; 25. First positioning hole; 26. Second positioning hole; 3. First push block; 31. First connecting end; 32. Insertion end; 321. Insertion tooth; 322. L-shaped recess; 4. First cylinder; 5. Second push block; 51. Second connecting end; 52. Pushing end; 6. Second cylinder; 7. Pressure plate; 8. Rotary pressing cylinder; 9. Product; 91. Structural groove. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] See Figures 1-2This embodiment discloses a pneumatic shaping device for powder metallurgy unit parts, including a support frame 1, which is a support carrier for the pneumatic shaping device. The top surface of the support frame 1 is fixedly connected to two limiting blocks 2 for initial positioning of the product 9 and a shaping component for shaping the product 9.

[0027] Specifically, the two limit blocks 2 are positioned opposite each other and have a predetermined distance between them, combined with Figure 4 In this embodiment, the limiting block 2 is constructed as a horizontally arranged T-shaped structure, including a limiting horizontal end 21 and a limiting vertical end 22. The limiting vertical end 22 is recessed relative to the limiting horizontal end 21, so that the top surface height of the limiting vertical end 22 is lower than the top surface height of the limiting horizontal end 21, thereby forming a guide channel 23 structure in the area corresponding to the limiting vertical end 22. Furthermore, a fixed mold core 24 adapted to the shape of the bottom cavity of the product 9 is fixed on the top surface of the limiting vertical end 22 away from the limiting horizontal end 21. During shaping, the product 9 is placed on the mold core 24, and the mold core 24 can initially position the product 9.

[0028] Combination Figure 1 and Figure 3 , Figure 6 The shaping component includes a first push block 3 corresponding to the positions of the two limit blocks 2. The two first push blocks 3 are respectively connected to the first cylinder 4. The first cylinder 4 pushes the first push block 3 to perform X-direction reciprocating motion, that is, to move towards or away from the mold core 24, thereby forming X-direction pushing and shaping of the mold core 24.

[0029] Specifically, the first cylinder 4 is fixedly connected to the top surface of the support frame 1, and the first push block 3 is fixedly connected to the output end of the first cylinder 4. In this embodiment, the first cylinder 4 is preferably a dual-axis cylinder to ensure the stability and accuracy of its output end movement. The first push block 3 includes an integrally connected first connecting end 31 and an insertion end 32. The first connecting end 31 is fixedly connected to the output end of the first cylinder 4 by bolts, the insertion end 32 faces the limiting block 2, and the width of the insertion end 32 matches the width of the guide channel 23 of the limiting block 2. The insertion end 32 extends into the guide channel 23. Furthermore, the insertion end 32 is constructed as a fork-shaped structure on the side facing the mold core 24, which has two insertion teeth 321, and the two insertion teeth 321 correspond to the two ends of the product 9 on the mold core 24. The outer side of the insertion teeth 321 has a notch with a rectangular structure along its length direction, and forms an L-shaped recess 322. This structure corresponds to the L-shaped structure grooves 91 on both sides of the product 9. The L-shaped recess 322 of the insertion teeth 321 can be inserted into the structure grooves 91 of the product 9 and fit into the structure grooves 91 to achieve the shaping effect.

[0030] It should be noted that the length of the insert 321 needs to be greater than the width of the product 9 in order to achieve a comprehensive shaping and pressing effect.

[0031] Combination Figure 5 In a preferred embodiment, to prevent the limiting block 2 from shifting due to the pushing force of the first push block 3, thereby affecting the shaping accuracy, the top surface of the support frame 1 is provided with two positioning posts, which are used to cooperate with the shallow first positioning hole 25 at the bottom of the limiting block 2 to form a preliminary positioning of the limiting block 2; the limiting block 2 is also provided with at least two sets of deeper second positioning holes 26, which are used to install positioning pins to make the limiting block 2 more securely fixed. The positioning pins extend from the bottom of the support frame 1 and are fixed in the second positioning holes 26.

[0032] like Figure 1 As shown, the shaping assembly also includes two second push blocks 5 and second cylinders 6 connected to them respectively. The two second push blocks 5 are distributed along the Y direction on both sides of the mold core 24 and are configured to reciprocate in the Y direction towards or away from the mold core 24. The distribution orientation of the two first push blocks 3 and the two second push blocks 5 roughly forms a rectangle. Specifically, the second cylinder 6 is fixedly connected to the top surface of the support frame 1, and the second push blocks 5 are fixedly connected to its output end. In this embodiment, the second cylinder 6 is preferably a dual-axis cylinder to ensure the stability and accuracy of its output end movement. Figure 7 The second pusher block 5 further includes an integrally connected second connecting end 51 and a pushing end 52. The second connecting end 51 is fixedly connected to the output end of the second cylinder 6. The pushing end 52 faces the mold core 24 and is constructed as a concave structure. Its two legs correspond to the positions of the mold core 24 on the two limit blocks 2, so as to accurately push against the product 9. The two second pushers 5 push against the two sides of the product 9 respectively, so as to achieve the effect of shaping the inner width and outer length of the product 9.

[0033] It should be noted that in actual applications, the length of some products 9 is slightly longer than the width of the vertical end 22 of the limiting block 2, so that the two sides of the products 9 will protrude slightly from the limiting block 2. In this case, after the second push block 5 pushes against the products 9, a pre-pressure gap needs to be left with the limiting block 2 to prevent the second push block 5 from over-pressing the products 9.

[0034] In a preferred embodiment, the shaping assembly further includes a rotatable pressing plate 7 and a rotary pressing cylinder 8 for controlling the movement of the pressing plate 7. Specifically, the pressing plate 7 is constructed as a long plate-like structure with a certain thickness, which is disposed above the mold core 24, and its pressing range covers the product 9 on the two mold cores 24; the rotary pressing cylinder 8 is disposed between the two limiting blocks 2, and correspondingly, the support frame 1 is provided with mounting holes for mounting the rotary pressing cylinder 8, which passes through the mounting holes and is fixedly connected to the support frame 1 by screws. In the initial state, the pressing plate 7 is in an upward position, and its two ends are offset from the two mold cores 24. At this time, the product 9 is placed on the mold core 24, and then the rotary pressing cylinder 8 is activated, the pressing plate 7 rotates 90 degrees and presses down on the product 9.

[0035] In application, in the initial state, first activate the rotary pressing cylinder 8 to control the pressure plate 7 to rotate 90° and spring open, placing the product 9 into the mold core 24 of the limiting block 2. Then, control the pressure plate 7 to rotate 90° and press down on the product 9. Control the second cylinder 6 to push the two second push blocks 5 to the sides of the two products 9, achieving the effect of shaping the inner width and outer length. Then, control the first cylinder 4 to push the two first push blocks 3 to insert into the structural grooves 91 of the two products 9 respectively, achieving the shaping effect. After pausing for 1 second, control each cylinder to reset and remove the product 9.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pneumatic shaping device for powder metallurgy unit parts, characterized in that, include: Support frame (1); Two limiting blocks (2) are provided and connected to the top surface of the support frame (1). The top surface of the limiting block (2) is fixed with a mold core (24) that matches the shape of the bottom cavity of the product (9). The shaping component, connected to the top surface of the support frame (1), includes a first push block (3) corresponding to the positions of the two limiting blocks (2) and two second push blocks (5) perpendicular to the first push block (3). The first push block (3) is configured to reciprocate in the X direction in the direction of approaching or moving away from the mold core (24). The first push block (3) is provided with a fork-shaped structure matching the structural groove (91) of the product (9). The second push blocks (5) are distributed on both sides of the mold core (24) and are configured to reciprocate in the Y direction in the direction of approaching or moving away from the mold core (24).

2. The pneumatic shaping device for powder metallurgy unit parts according to claim 1, characterized in that, The limiting block (2) is constructed as a horizontally arranged T-shaped structure, including a limiting horizontal end (21) and a limiting vertical end (22). The limiting horizontal end (21) is provided with a guide channel (23) in the area corresponding to the limiting vertical end (22). The mold core (24) is connected to the limiting vertical end (22).

3. The pneumatic shaping device for powder metallurgy unit parts according to claim 2, characterized in that, The first push block (3) includes a first connecting end (31) and an insertion end (32). The first connecting end (31) is connected to a first cylinder (4). The insertion end (32) faces the limiting block (2), and the width of the insertion end (32) matches the width of the guide channel (23).

4. The pneumatic forming device for powder metallurgy unit parts according to claim 3, characterized in that, The fork-shaped structure consists of two insert teeth (321) on the side of the insertion end (32) facing the mold core (24), the two insert teeth (321) corresponding to the two ends of the product (9), and the outer side of the insert teeth (321) along its length direction is provided with L-shaped recesses (322) corresponding to the structural grooves (91) on both sides of the product (9), the L-shaped recesses (322) being constructed to be able to be inserted into the structural grooves (91).

5. The pneumatic forming device for powder metallurgy unit parts according to claim 4, characterized in that, The length of the insert (321) is greater than the width of the product (9).

6. The pneumatic shaping device for powder metallurgy unit parts according to claim 1, characterized in that, The limiting block (2) is provided with at least two sets of second positioning holes (26) with a predetermined depth. The second positioning holes (26) are used to install pins connected to the support frame (1).

7. The pneumatic shaping device for powder metallurgy unit parts according to claim 1, characterized in that, The second push block (5) includes a second connecting end (51) and a pushing end (52). The second connecting end (51) is connected to a second cylinder (6). The pushing end (52) is constructed as a concave structure, and its two legs correspond to the positions of the mold core (24) on the two limiting blocks (2).

8. The pneumatic shaping device for powder metallurgy unit parts according to claim 1, characterized in that, The shaping assembly also includes a pressure plate (7) disposed above the mold core (24) and a rotary pressing cylinder (8) for controlling the rotation and pressing of the pressure plate (7), wherein the rotary pressing cylinder (8) is disposed between two limit blocks (2).

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