Die for powder metallurgy

Abstract

The utility model discloses a die for powder metallurgy, and particularly relates to the technical field of powder metallurgy, the die comprises a first die main body and a second die main body, the second die main body is located at the bottom of the first die main body, and ejection assemblies are arranged on the first die main body and the second die main body. Each of the two ejection assemblies comprises a push plate, a connecting rod, an extrusion block, a spring and a sliding rod, one end of each of the two connecting rods is fixedly connected with the corresponding push plate, and the other end of each of the two connecting rods is fixedly connected with the corresponding extrusion block. When the belt pulley is located in the first die body, the push plate at the top of the first die body is pressed to drive the connecting rod to move downwards, so that the extrusion block is driven to move downwards, the extrusion block pushes the belt pulley out of the first die body, and similarly, the belt pulley in the second die body is extruded. Belt pulley finished products in the two molds can be conveniently ejected, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, and more specifically, to a mold for powder metallurgy. Background Art

[0002] Powder metallurgy is a special metal processing technology that puts mixed powder into a mold to form the powder into the desired shape. The pulleys used in the steering system of automobiles are generally formed by powder metallurgy. Existing powder metallurgy molds are not convenient for quickly demoulding good products after firing, and the operation is difficult, resulting in low production efficiency.

[0003] The utility model with announcement number CN216966278U discloses a graphite mold for powder metallurgy. When the inner end of the transmission rod moves backward synchronously, its outer end expands outward synchronously. At this time, the ball seat and the ball head rotate both horizontally and vertically, and at the same time, the ball seat and the top block also rotate, so that the bottom end of the top block is pushed outward at the same time, and while the lower end of the top block swings outward, the outer end of its upper end is tilted upward at the same time, so that the finished product is ejected and then taken out by relevant staff, which is convenient for fast demolding of well-fired products, simple operation, easy use, and improved production efficiency.

[0004] When the above-mentioned mold is in use, when the finished product is located in the die, the lower end of the ejector block swings outward while the outer end of its upper end is simultaneously tilted upward to eject the finished product. However, the finished product may be stuck in the punch, which makes it inconvenient to eject the finished product in the punch, and the use effect is poor. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a mold for powder metallurgy, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a powder metallurgy mold, comprising a first mold body and a second mold body, and the second mold body is located at the bottom of the first mold body, the first mold body and the second mold body are both provided with ejection assemblies, and the two ejection assemblies each include a push plate, a connecting rod, an extrusion block, a spring and a sliding rod, one end of the two connecting rods are respectively fixedly connected to the two push plates, and the other ends of the two connecting rods are respectively fixedly connected to the two extrusion blocks, and the two extrusion blocks are respectively located inside the first mold body and the second mold body, the two springs are respectively movably mounted on the two connecting rods, one end of the two sliding rods are respectively fixedly connected to the first mold body and the second mold body, and the other ends of the two sliding rods pass through the two push plates respectively.

[0007] Furthermore, the first mold body and the second mold body are fixedly connected to the opposite sides with screw rods, and one end of the two screw rods passes through the two push plates respectively, and the two screw rods are movably sleeved with threaded extrusion sleeves.

[0008] Furthermore, two limit blocks are movably provided on the opposite sides of the two push plates, and one side of the four limit blocks is fixedly connected to the two sliding rods and the two screw rods respectively.

[0009] It can be seen that in the above technical solution, the push plate is limited and fixed by the threaded extrusion sleeve and the limit block.

[0010] Furthermore, the first mold body and the second mold body are both fixedly provided with external threaded sleeves, and an internal threaded sleeve is movably provided between the two external threaded sleeves.

[0011] Furthermore, a limiting ring is movably provided at the bottom of one of the external threaded sleeves, and the limiting ring is fixedly sleeved on the second mold body.

[0012] It can be seen that in the above technical solution, the limiting ring can limit the moving distance of the internal threaded sleeve.

[0013] Furthermore, a clamping ring is movably provided between the first mold body and the second mold body, and a plurality of clamping blocks are fixedly connected to both sides of the clamping ring, and one end of the plurality of clamping blocks extends into the first mold body and the second mold body respectively.

[0014] Furthermore, the upper thread of the first mold body is connected with a long bolt, and a spacer is provided on the movable sleeve of the long bolt.

[0015] It can be seen that in the above technical solution, the long bolt is rotated and moved away from the first mold body, and then the mixed powder is added into the first mold body. The gasket can improve the sealing between the long bolt and the first mold body.

[0016] Technical effects and advantages of the utility model:

[0017] 1. When the pulley is located in the first mold body, the push plate on the top of the first mold body is pressed to drive the connecting rod to move downward, thereby driving the extrusion block to move downward, and the extrusion block pushes the pulley into the first mold body. At the same time, the push plate drives the spring to compress. When the push plate is released, the spring rebounds and drives the push plate to return to its original position. At the same time, the slide bar limits the deflection of the push plate, and this cycle is repeated. Similarly, the pulley in the second mold body is extruded. The structure is simple, and it is convenient to eject the finished pulleys in the two molds, and the use effect is good;

[0018] 2. The utility model places a clamping ring between the first mold body and the second mold body, and a plurality of clamping blocks are respectively located in the first mold body and the second mold body, thereby locking the first mold body and the second mold body, and then sets the internal threaded sleeve on the two external threaded sleeves, so that the two external threaded sleeves are fixed to the internal threaded sleeves, thereby fixing the first mold body and the second mold body, and similarly disassembling the first mold body and the second mold body, the utility model has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of a powder metallurgy mold of the utility model;

[0021] Figure 2 This is a bottom view of the overall structure of a powder metallurgy mold of the utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of a first mold body and an external thread sleeve of a powder metallurgy mold of the utility model;

[0023] Figure 4 This is a schematic diagram of the assembly structure of a second mold body and an external thread sleeve of a powder metallurgy mold of the utility model;

[0024] Figure 5 This is a schematic diagram of the assembly structure of a clamping ring and a clamping block of a powder metallurgy mold of the utility model;

[0025] Figure 6 The utility model is a schematic diagram of the structure of an ejector assembly of a powder metallurgy mold.

[0026] In the figure: 1. first mold body; 2. second mold body; 3. external threaded sleeve; 4. internal threaded sleeve; 5. limit ring; 6. ejector assembly; 7. long bolt; 8. gasket; 9. retaining ring; 10. clamping block; 601. push plate; 602. connecting rod; 603. extrusion block; 604. spring; 605. sliding rod; 606. screw; 607. threaded extrusion sleeve; 608. limit block. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Refer to the instruction manual Figure 1-6 , a powder metallurgy mold of this embodiment includes a first mold body 1 and a second mold body 2, and the second mold body 2 is located at the bottom of the first mold body 1, and the first mold body 1 and the second mold body 2 are both provided with an ejection assembly 6, and the two ejection assemblies 6 each include a push plate 601, a connecting rod 602, an extrusion block 603, a spring 604 and a slide bar 605, one end of the two connecting rods 602 are respectively fixedly connected to the two push plates 601, and the other ends of the two connecting rods 602 are respectively fixedly connected to the two extrusion blocks 603, and the two extrusion blocks 603 are respectively located inside the first mold body 1 and the second mold body 2, two springs 604 are respectively movably mounted on the two connecting rods 602, one end of the two slide bars 605 are respectively fixedly connected to the first mold body 1 and the second mold body 2, and the other ends of the two slide bars 605 pass through the two push plates 601.

[0029] Furthermore, the first mold body 1 and the second mold body 2 are fixedly connected to the opposite sides with screw rods 606, and one end of the two screw rods 606 passes through the two push plates 601 respectively, and the two screw rods 606 are movably provided with threaded extrusion sleeves 607, and the opposite sides of the two push plates 601 are movably provided with two limit blocks 608, and one side of the four limit blocks 608 is fixedly connected to the two sliding rods 605 and the two screw rods 606 respectively.

[0030] Furthermore, an external threaded sleeve 3 is fixedly provided on the first mold body 1 and the second mold body 2, an internal threaded sleeve 4 is movably provided between the two external threaded sleeves 3, a limiting ring 5 is movably provided at the bottom of one of the external threaded sleeves 3, and the limiting ring 5 is fixedly provided on the second mold body 2, a clamping ring 9 is movably provided between the first mold body 1 and the second mold body 2, a plurality of clamping blocks 10 are fixedly connected on both sides of the clamping ring 9, and one end of the plurality of clamping blocks 10 respectively extends into the first mold body 1 and the second mold body 2.

[0031] Among them, the retaining ring 9 is placed between the first mold body 1 and the second mold body 2, and multiple clamping blocks 10 are respectively located in the first mold body 1 and the second mold body 2, so as to lock the first mold body 1 and the second mold body 2, and then the internal threaded sleeve 4 is sleeved on the two external threaded sleeves 3, so that the two external threaded sleeves 3 are fixed to the internal threaded sleeve 4, and then the first mold body 1 is fixed to the second mold body 2. Similarly, the first mold body 1 and the second mold body 2 are disassembled. The structure is simple and easy to use. The limit ring 5 can limit the moving distance of the internal threaded sleeve 4.

[0032] Furthermore, a long bolt 7 is connected to the upper thread of the first mold body 1, and a gasket 8 is provided on the movable sleeve of the long bolt 7. The long bolt 7 is rotated and moved away from the first mold body 1, and then the mixed powder is added into the first mold body 1. The gasket 8 can improve the sealing between the long bolt 7 and the first mold body 1.

[0033] The method of using this embodiment is:

[0034] When in use, the pulley of the automobile steering system is formed in the first mold body 1 and the second mold body 2. When the pulley is located in the first mold body 1, the push plate 601 on the top of the first mold body 1 is pressed to drive the connecting rod 602 to move downward, thereby driving the extrusion block 603 to move downward, and the extrusion block 603 pushes the pulley into the first mold body 1. At the same time, the push plate 601 drives the spring 604 to compress. When the push plate 601 is released, the spring 604 rebounds and drives the push plate 601 to return to its original position. At the same time, the slide bar 605 limits the deflection of the push plate 601, and this cycle is repeated. Similarly, the pulley in the second mold body 2 is extruded. The structure is simple, and it is convenient to eject the finished pulleys in the two molds. The use effect is good, and the threaded extrusion sleeve 607 is rotated to make it contact with the push plate 601, and the push plate 601 is limited and fixed by the threaded extrusion sleeve 607 and the limit block 608.

[0035] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A powder metallurgy mold, comprising a first mold body (1) and a second mold body (2), wherein the second mold body (2) is located at the bottom of the first mold body (1), characterized in that: The first mold body (1) and the second mold body (2) are both provided with an ejection assembly (6), and the two ejection assemblies (6) each include a push plate (601), a connecting rod (602), an extrusion block (603), a spring (604) and a slide bar (605), one end of the two connecting rods (602) are respectively fixedly connected to the two push plates (601), and the other end of the two connecting rods (602) are respectively fixedly connected to the two extrusion blocks (603), and the two extrusion blocks (603) are respectively located inside the first mold body (1) and the second mold body (2), the two springs (604) are respectively movably mounted on the two connecting rods (602), one end of the two slide bars (605) are respectively fixedly connected to the first mold body (1) and the second mold body (2), and the other end of the two slide bars (605) respectively penetrates the two push plates (601).

2. A powder metallurgy mold according to claim 1, characterized in that: The first mold body (1) and the second mold body (2) are fixedly connected to a screw rod (606) on the opposite side, and one end of the two screw rods (606) passes through the two push plates (601) respectively, and the two screw rods (606) are movably sleeved with a threaded extrusion sleeve (607).

3. A powder metallurgy mold according to claim 1, characterized in that: Two limit blocks (608) are movably provided on opposite sides of the two push plates (601), and one side of the four limit blocks (608) is fixedly connected to the two slide bars (605) and the two screw rods (606) respectively.

4. A powder metallurgy mold according to claim 1, characterized in that: An external threaded sleeve (3) is fixedly mounted on both the first mold body (1) and the second mold body (2), and an internal threaded sleeve (4) is movably mounted between the two external threaded sleeves (3).

5. A powder metallurgy mold according to claim 4, characterized in that: A limiting ring (5) is movably provided at the bottom of one of the external threaded sleeves (3), and the limiting ring (5) is fixedly sleeved on the second mold body (2).

6. The powder metallurgy mold according to claim 1, characterized in that: A clamping ring (9) is movably arranged between the first mold body (1) and the second mold body (2), and a plurality of clamping blocks (10) are fixedly connected to both sides of the clamping ring (9), and one end of the plurality of clamping blocks (10) extends into the first mold body (1) and the second mold body (2) respectively.

7. The powder metallurgy mold according to claim 1, characterized in that: The upper thread of the first mold body (1) is connected with a long bolt (7), and a gasket (8) is movably sleeved on the long bolt (7).

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