Powder metallurgy pressing die

Abstract

The invention relates to the technical field of dies, in particular to a powder metallurgy pressing die which comprises a workbench, a die bottom plate is installed above the workbench, a first die plate and a second die plate are arranged on the upper end face of the die bottom plate, an annular groove is formed in the first die plate, and an annular plate is fixedly installed on the side wall of the second die plate. The annular plate is inserted into the annular groove in a penetrating mode, the annular plate is made of an elastic material, a supporting frame is installed above the workbench, an oil cylinder is installed on the upper side of the inner wall of the supporting frame, metallurgical powder is introduced into a mold cavity between the first mold plate and the second mold plate through an external material connecting pipe, then the oil cylinder is controlled to drive a pressing head to move downwards, and the pressing head is pressed into the annular groove. The pressing head moves towards the side close to the mold cavity, the pressing head compresses powder in the mold cavity till the powder is compacted, after the powder is formed, the first mold plate and the second mold plate can be automatically controlled to be away from each other through the discharging mechanism, formed powder metallurgy can be automatically taken out, and operation is convenient.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a powder metallurgy pressing mold. Background Art

[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metal powder) as raw material, and then forms and sinters it to produce metal materials, composite materials and various types of products. The purpose of forming is to produce a compact of a certain shape and size, and to give it a certain density and strength.

[0003] In the prior art, a die pressing device is commonly used to press metallurgical powders, that is, after filling the die with metallurgical powders, the powders are compacted by a punch, and then the formed compact is removed. For example, the application publication number CN115365767A discloses a powder metallurgy pressing die processing technology and a powder metallurgy pressing die, step 1: punching holes inside the integral blank die; step 2: heat treating the integral blank die after step 1. The die body is first drilled inside the material, and then heat treated. After the internal holes are drilled, the die body volume is reduced, and the internal structure conversion is more uniform during heat treatment. After changing the process, only 2-3 temperings are needed to eliminate the internal stress of the material, avoiding the phenomenon of local cracking of the material during processing on the online cutting wire.

[0004] Although the above technical solution can solve the problem of local cracking of the material, there are still other problems in the specific operation. For example, after the product is formed, an external device is required to take out the device, and the staff manually assists in taking out the product. The operation is more troublesome and is not conducive to the subsequent use of the product.

[0005] Therefore, it is necessary to provide a powder metallurgy pressing die to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0007] The technical solution adopted by the present application to solve its technical problems is: a powder metallurgy pressing mold, including a workbench, a mold base plate is installed above the workbench, and the upper end surface of the mold base plate is provided with template one and template two, the interior of the template one is provided with an annular groove, and the side wall of the template two is fixedly provided with an annular plate, and the annular plate is inserted into the interior of the annular groove; a support frame is installed above the workbench, and an oil cylinder is installed on the upper side of the inner wall of the support frame, the telescopic end of the oil cylinder corresponds to the cavity between template one and template two, and the telescopic end of the oil cylinder is fixedly provided with a pressing head; a discharging mechanism is provided on one side of the workbench, and the discharging mechanism is used to control template one and template two to move away from each other.

[0008] Furthermore, the shape of the annular plate is adapted to the shape of the annular groove, and the material of the annular plate is an elastic material; during operation, since the shapes of the annular plate and the annular groove are adapted to each other, it is convenient to separate and close template one and template two again, which is beneficial to the subsequent removal and molding of the product.

[0009] Furthermore, the discharging mechanism includes a plurality of connecting brackets fixedly mounted on the side walls of the supporting frame, and pulleys are rotatably arranged inside the plurality of connecting brackets. The plurality of pulleys are vertically arranged, and an elastic pull rope is wrapped around the surface of each pulley. One end of the elastic pull rope is connected to the side wall of the telescopic end of the oil cylinder, and the other end is connected to a pull column. Two pull columns are arranged, and are respectively connected to the side walls of template one and template two; a limiting unit is arranged on the upper surface of the pull column, and the limiting unit is used to limit and fix the pull column.

[0010] Furthermore, a limit frame is fixedly installed on the side wall of the support frame, and there are two limit frames. The two pull columns are respectively slidably arranged inside the limit frames, and sliding grooves adapted to the pull columns are opened inside the limit frames; during operation, when the pull columns move, the pull columns will move inside the limit frames at the same time. Under the limitation of the pull columns by the limit frames, it can ensure that the template 1 and template 2 connected to the pull columns move on the same axis, thereby facilitating the removal of the formed products.

[0011] Furthermore, a limit spring is fixedly installed on the inner wall of the limit frame, and the side of the limit spring away from the limit frame is connected to the side wall of the pull column; during operation, when the elastic pull rope pulls the pull column to move through the fixed pulley, the pull column will simultaneously compress the limit spring on its side wall. After the molded product is taken out, the oil cylinder is first controlled to drive the pressing head to move downward, that is, the telescopic end of the oil cylinder no longer stretches the elastic pull rope, so the elastic pull rope will be loose to a certain extent. When the looseness of the elastic pull rope is enough for the limit spring to drive the pull column to move back from the compressed state, template one and template two will be closed again under the action of the corresponding limit springs, thereby facilitating the subsequent pressing of powder metallurgy.

[0012] Furthermore, the limit unit includes an elastic limit head installed above the pull column, the elastic limit head is in the shape of an arc, the side wall of the limit frame is installed with an annular seat, and a limit groove is opened at the inner wall of the annular seat corresponding to the elastic limit head, and the shape of the elastic limit head is adapted to the shape of the limit groove.

[0013] Furthermore, the groove wall of the limit groove is provided with rounded corners, and the outer surface of the elastic limit head is sleeved with a spring; the side wall of the pull column is provided with a trigger unit, and the trigger unit is used to control the removal of the molded product; when working, since the surface of the elastic limit head is sleeved with the spring, and the shape of the limit groove is compatible with the shape of the elastic limit head, it is convenient for the subsequent elastic pull rope to pull the pull column out of the limit groove.

[0014] Furthermore, the trigger unit includes a contact 1 fixedly mounted on the side wall of the pull column, a contact 2 is mounted on the inner wall of the limit frame, a fixed frame is mounted above the workbench, a driving gear is rotatably arranged in the fixed frame, an end of the driving gear is connected to the output end of an external motor, a ratchet plate is slidably arranged in the fixed frame, the ratchet plate is meshed with the driving gear, and the side wall of the ratchet plate is connected to the lower end surface of the mold bottom plate through an L-shaped support plate.

[0015] Furthermore, two top plates are fixedly installed above the workbench, and an embedding groove is opened inside the mold bottom plate. The shape of the embedding groove is matched with the shape of the top plate, and the top plate is slidably arranged inside the embedding groove; during operation, when the mold bottom plate moves downward, and template one and template two also happen to move to the side close to the top plate, as the mold bottom plate moves downward, the position of the top plate remains unchanged, so the top plate can push the molded product above the mold bottom plate to a certain distance, thereby facilitating the removal of the molded product.

[0016] Furthermore, a limiting bracket adapted to the ratchet plate is arranged inside the fixing frame; when working, the limiting bracket is arranged to facilitate the driving gear to drive the ratchet plate to move.

[0017] The beneficial effect of the present application is as follows: a powder metallurgy pressing mold provided by the present application, through the action of a fixed pulley, an elastic pull rope will pull the pull column at the other end thereof, and the two pull columns will respectively pull template one and template two, and then template one and template two will separate from each other, that is, template two will drive the annular plate to be pulled out of the annular groove of template one by a certain distance, so that the molded product therebetween will be above the bottom plate of the mold. Such a design can automatically separate template one and template two, avoiding manual operation by staff, and also avoiding the problem of damage to the outer peripheral surface of the molded product due to strong adhesion between the molded product and the inner wall of the mold when the molded product is pushed out from the bottom, and the operation is relatively convenient.

[0018] When the elastic pull rope pulls the pull column out from the limit of the limit groove, the pull column will simultaneously drive contact one to move toward the side close to contact two. When template one and template two are separated from each other by a certain distance, contact one will contact contact two, so that the external circuit is connected. Therefore, the external controller will control the motor to drive the driving gear to rotate, and the driving gear will drive the ratchet plate engaged with it to move. The ratchet plate will simultaneously drive the L-shaped support plate and the mold bottom plate to move downward, so that the mold bottom plate drives the molded product to move downward, so that the molded product is moved out from between template one and template two, thereby facilitating the subsequent removal of the molded product.

[0019] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a three-dimensional schematic diagram in this application;

[0022] Figure 2 This is a schematic diagram of the structure of the annular groove and the annular plate in this application;

[0023] Figure 3 This is a schematic diagram of the structure of the pulley part in this application;

[0024] Figure 4 This is a schematic diagram of the structure of the pull column part in this application;

[0025] Figure 5 This is a schematic diagram of the structure of the limiting frame in this application;

[0026] Figure 6 This is a schematic diagram of the cross-section structure of the limiting frame in this application;

[0027] Figure 7 This is a schematic diagram of the structure of contact 1 and contact 2 in this application;

[0028] Figure 8 This is a schematic diagram of the structure of the L-shaped support plate in this application;

[0029] Fig. 9 This is a schematic diagram of the top plate structure in this application.

[0030] Among them, the reference numerals in the figure are:

[0031] 1. Workbench; 2. Mold bottom plate; 201. Template 1; 202. Template 2; 3. Annular groove; 4. Annular plate; 5. Support frame; 501. Connecting bracket; 502. Pulley; 6. Cylinder; 7. Pressing head; 8. Elastic pull rope; 9. Pull column; 10. Limit frame; 11. Limit spring; 12. Elastic limit head; 13. Annular seat; 14. Limit groove; 15. Contact 1; 16. Contact 2; 17. Fixed frame; 171. Ratchet plate; 172. L-shaped support plate; 18. Driving gear; 19. Top plate; 20. Embedded groove. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] like Figures 1 to 6 As shown, the present application provides a powder metallurgy pressing die, including a workbench 1, a die bottom plate 2 is installed above the workbench 1, and a template 1 201 and a template 2 202 are arranged on the upper end surface of the die bottom plate 2, an annular groove 3 is opened inside the template 1 201, and an annular plate 4 is fixedly installed on the side wall of the template 2 202, and the annular plate 4 is inserted into the inside of the annular groove 3, a support frame 5 is installed above the workbench 1, and an oil cylinder 6 is installed on the upper side of the inner wall of the support frame 5, and the telescopic end of the oil cylinder 6 corresponds to the cavity between the template 1 201 and the template 2 202, and a pressing head 7 is fixedly installed on the telescopic end of the oil cylinder 6; a discharging mechanism is arranged on one side of the workbench 1, and the discharging mechanism is used to control the template 1 201 and the template 2 202 to move away from each other;

[0035] During operation, in the initial state, template 1 201 and template 2 202 are butt-jointed with each other, and the combined cavity of the two forms a mold cavity; then, the metallurgical powder is introduced into the mold cavity between template 1 201 and template 2 202 through an external material pipe, and then the oil cylinder 6 is controlled to drive the pressing head 7 to move downward, so that the pressing head 7 moves toward the side close to the mold cavity, so that the pressing head 7 compresses the powder inside the mold cavity until the powder is compacted. After the powder is formed, the discharge mechanism can automatically control template 1 201 and template 2 202 to move away from each other, and the formed powder metallurgy can be automatically taken out, which is convenient to operate.

[0036] The shape of the annular plate 4 is adapted to the shape of the annular groove 3, and the material of the annular plate 4 is an elastic material; during operation, since the shapes of the annular plate 4 and the annular groove 3 are adapted to each other, the mutual separation and re-closing of template 1 201 and template 2 202 can be facilitated, thereby facilitating the subsequent removal and molding of the product.

[0037] The discharging mechanism includes a plurality of connecting brackets 501 fixedly mounted on the side wall of the support frame 5, wherein pulleys 502 are rotatably arranged in the plurality of connecting brackets 501, wherein the plurality of pulleys 502 are arranged vertically, and an elastic pull rope 8 is surrounded on the surface of each pulley 502, wherein one end of the elastic pull rope 8 is connected to the side wall of the telescopic end of the oil cylinder 6, and the other end is connected to a pull column 9, wherein two pull columns 9 are arranged and are respectively connected to the side walls of the template 1 201 and the template 2 202; a limiting unit is arranged on the upper surface of the pull column 9, and the limiting unit is used to limit and fix the pull column 9;

[0038] When working, refer to the attached Figure 3 As shown, at this time, the template 1 201 and the template 2 202 are closed together, and the upper pressing head 7 is pressing and molding the powder in the cavity between the template 1 201 and the template 2 202; after the powder between the template 1 201 and the template 2 202 is molded, the telescopic end of the oil cylinder 6 is first controlled to drive the pressing head 7 to move upward, so that the pressing head 7 gradually moves away from the template 1 201 and the template 2 202. After the telescopic end of the oil cylinder 6 moves a certain distance, the side wall of the telescopic end of the oil cylinder 6 will simultaneously pull the elastic pull rope 8, and then through the action of the fixed pulley 502, the elastic pull rope 8 will pull its other end The pulling column 9 at the bottom, and the two pulling columns 9 will pull the template 1 201 and the template 2 202 respectively, and then the template 1 201 and the template 2 202 will separate from each other, that is, the template 2 202 will drive the annular plate 4 to be pulled out of the annular groove 3 of the template 1 201 for a certain distance, so that the molded product between them will be above the mold bottom plate 2. Such a design can make the template 1 201 and the template 2 202 automatically separate, avoiding manual operation by the staff, and also avoiding the problem that the outer peripheral surface of the molded product is strongly bonded to the inner wall of the mold when the molded product is pushed out from the bottom, causing it to be damaged, and the operation is more convenient.

[0039] It should be noted that, refer to the attached Figure 3As shown, this is the initial state of the mold, template 1 201 and template 2 202 are closed together, and the staff can add powder metallurgy materials into the cavities of the two; and at this time, the elastic pull rope 8 is in a loose state, and the looseness of the elastic pull rope 8 is sufficient for the telescopic end of the cylinder 6 to drive the pressing head 7 to move downward, and enable the pressing head 7 to complete the pressing operation, and at the same time, the telescopic end of the cylinder 6 will not pull the elastic pull rope when moving downward; this is convenient for the subsequent oil cylinder 6 to pull the pressing head 7 upward for a distance, and the telescopic end of the cylinder 6 will pull the elastic pull rope 8, thereby pulling template 1 201 and template 2 202 apart from each other.

[0040] The side wall of the support frame 5 is fixedly installed with a limit frame 10, and there are two limit frames 10. The two pulling columns 9 are respectively slidably arranged inside the limit frames 10, and a sliding groove adapted to the pulling columns 9 is opened inside the limit frames 10; during operation, when the pulling columns 9 move, the pulling columns 9 will move inside the limit frames 10 at the same time. Under the limitation of the limit frames 10 on the pulling columns 9, it can ensure that the template 1 201 and the template 2 202 connected to the pulling columns 9 move on the same axis, thereby facilitating the removal of the formed products.

[0041] like Figures 3 to 7 As shown, a limit spring 11 is fixedly installed on the inner wall of the limit frame 10, and the side of the limit spring 11 away from the limit frame 10 is connected to the side wall of the pull column 9; during operation, when the elastic pull rope 8 pulls the pull column 9 to move through the fixed pulley 502, the pull column 9 will simultaneously compress the limit spring 11 on its side wall. After the molded product is taken out, the oil cylinder 6 is first controlled to drive the pressing head 7 to move downward, that is, the telescopic end of the oil cylinder 6 no longer stretches the elastic pull rope 8, so the elastic pull rope 8 will be loose to a certain extent. When the looseness of the elastic pull rope 8 is enough to allow the limit spring 11 to drive the pull column 9 to move and recover from the compressed state, the template 1 201 and the template 2 202 will be closed again under the action of the corresponding limit springs 11, thereby facilitating the subsequent pressing of powder metallurgy.

[0042] like Figures 4 to 9As shown, the limiting unit includes an elastic limiting head 12 installed above the pulling column 9, the shape of the elastic limiting head 12 is arc-shaped, and the side wall of the limiting frame 10 is installed with an annular seat 13, and the inner wall of the annular seat 13 is provided with a limiting groove 14 at a position corresponding to the elastic limiting head 12, and the shape of the elastic limiting head 12 is adapted to the shape of the limiting groove 14; during operation, when the template 1 201 and the template 2 202 are closed together, the elastic limiting head 12 is located inside the limiting groove 14 on the inner wall of the annular seat 13; at this time, the elastic limiting head 12 can give a certain limiting force to the annular seat 13 and the pulling column 9, so as to avoid the problem that the template 1 201 and the template 2 202 are separated due to the large force when the pressing head 7 above presses the molding material, thereby facilitating the cavity molding of the product between the template 1 201 and the template 2 202;

[0043] Moreover, after one-step molding is completed, when the elastic pull rope 8 pulls the pull column 9, when the pulling force is greater than the limiting force of the elastic limit head 12 and the limiting groove 14, the elastic limit head 12 will be pulled out of the limiting groove 14, so that the pull column 9 will continue to drive template 1 201 and template 2 202 to separate from each other, thereby facilitating the subsequent removal of the molded product.

[0044] The groove wall of the limiting groove 14 is provided with rounded corners, and the outer surface of the elastic limiting head 12 is sleeved with a spring; the side wall of the pulling column 9 is provided with a trigger unit, and the trigger unit is used to control the removal of the molded product; when working, since the surface of the elastic limiting head 12 is sleeved with a spring, and the shape of the limiting groove 14 is compatible with the shape of the elastic limiting head 12, it is convenient for the subsequent elastic pull rope 8 to pull the pulling column 9 out of the limiting groove 14.

[0045] The trigger unit includes a contact 15 fixedly mounted on the side wall of the pull column 9, a contact 2 16 is mounted on the inner wall of the limit frame 10, a fixing frame 17 is mounted above the workbench 1, a driving gear 18 is rotatably arranged in the fixing frame 17, the end of the driving gear 18 is connected to the output end of the external motor, a ratchet plate 171 is slidably arranged in the fixing frame 17, the ratchet plate 171 is meshedly connected with the driving gear 18, and the side wall of the ratchet plate 171 is connected to the lower end surface of the mold bottom plate 2 through an L-shaped support plate 172; when working, when the elastic pull rope 8 pulls the pull column 9 out from the limit of the limit groove 14, The pull column 9 will simultaneously drive the contact 15 to move toward the side close to the contact 2 16. When the template 1 201 and the template 2 202 are separated from each other by a certain distance, the contact 15 will contact the contact 2 16, so that the external circuit is connected. Therefore, the external controller will control the motor to drive the driving gear 18 to rotate, and the driving gear 18 will drive the ratchet plate 171 engaged with it to move. The ratchet plate 171 will simultaneously drive the L-shaped support plate 172 and the mold bottom plate 2 to move downward, so that the mold bottom plate 2 drives the molded product to move downward, so that the molded product is moved out from between the template 1 201 and the template 2 202, thereby facilitating the subsequent removal of the molded product.

[0046] Two top plates 19 are fixedly installed above the workbench 1, and an embedding groove 20 is opened inside the mold bottom plate 2. The shape of the embedding groove 20 is adapted to the shape of the top plate 19, and the top plate 19 is slidably arranged inside the embedding groove 20; during operation, when the mold bottom plate 2 moves downward, and the template 1 201 and the template 2 202 also happen to move to the side close to the top plate 19, as the mold bottom plate 2 moves downward, the position of the top plate 19 remains unchanged, so the top plate 19 can push the molded product above the mold bottom plate 2 to a certain distance, thereby facilitating the removal of the molded product.

[0047] The fixing frame 17 is provided with a limit bracket matched with the ratchet plate 171 inside; when working, the limit bracket is provided to facilitate the driving gear 18 to drive the ratchet plate 171 to move.

[0048] Working principle: In the initial state, the template 1 201 and the template 2 202 are butted together, and the combined cavity of the two forms a mold cavity; then the metallurgical powder is introduced into the mold cavity between the template 1 201 and the template 2 202 through the external material pipe, and then the control cylinder 6 drives the pressing head 7 to move downward, so that the pressing head 7 moves toward the side close to the mold cavity, so that the pressing head 7 compresses the powder inside the mold cavity until the powder is compacted. After the powder is formed, the template 1 201 and the template 2 202 can be automatically controlled to move away from each other through the discharging mechanism, and the formed powder metallurgy can be automatically taken out, which is convenient to operate;

[0049] Refer to the attached Figure 3As shown, at this time, the template 1 201 and the template 2 202 are closed together, and the upper pressing head 7 is pressing and molding the powder in the cavity between the template 1 201 and the template 2 202; after the powder between the template 1 201 and the template 2 202 is molded, the telescopic end of the oil cylinder 6 is first controlled to drive the pressing head 7 to move upward, so that the pressing head 7 gradually moves away from the template 1 201 and the template 2 202. After the telescopic end of the oil cylinder 6 moves a certain distance, the side wall of the telescopic end of the oil cylinder 6 will simultaneously pull the elastic pull rope 8, and then through the action of the fixed pulley 502, the elastic pull rope 8 will pull the other end thereof. The two pulling columns 9 will pull the template 1 201 and the template 2 202 respectively, and then the template 1 201 and the template 2 202 will separate from each other, that is, the template 2 202 will drive the annular plate 4 to be pulled out of the annular groove 3 of the template 1 201 by a certain distance, so that the molded product between them will be above the mold bottom plate 2. Such a design can make the template 1 201 and the template 2 202 automatically separate, avoiding manual operation by the staff, and also avoiding the problem that the molded product is strongly bonded to the inner wall of the mold when the molded product is pushed out from the bottom, resulting in damage to the outer peripheral surface of the molded product, and the operation is more convenient;

[0050] When the elastic pull rope 8 pulls the pull column 9 to move through the fixed pulley 502, the pull column 9 will compress the limit spring 11 of its side wall at the same time. After the molded product is taken out, the oil cylinder 6 is first controlled to drive the pressing head 7 to move downward, that is, the telescopic end of the oil cylinder 6 no longer stretches the elastic pull rope 8, so the elastic pull rope 8 will be loosened to a certain extent. When the looseness of the elastic pull rope 8 is enough for the limit spring 11 to drive the pull column 9 to move and recover from the compressed state, the template 1 201 and the template 2 202 will be closed again under the action of the corresponding limit spring 11, so as to facilitate the subsequent pressing of powder metallurgy.

[0051] When the template 1 201 and the template 2 202 are closed together, the elastic limiting head 12 is located inside the limiting groove 14 on the inner wall of the annular seat 13; at this time, the elastic limiting head 12 can give a certain limiting force to the annular seat 13 and the pulling column 9, so as to avoid the problem that the template 1 201 and the template 2 202 are separated due to the large force when the pressing head 7 above presses the molding material, thereby facilitating the cavity molding of the product between the template 1 201 and the template 2 202; and after the one-time molding is completed, under the pulling force of the elastic pull rope 8 on the pulling column 9, when the pulling force is greater than the limiting force of the elastic limiting head 12 and the limiting groove 14, the elastic limiting head 12 will be pulled out of the limiting groove 14, so that the pulling column 9 will continue to drive the template 1 201 and the template 2 202 to separate from each other, thereby facilitating the subsequent removal of the molded product;

[0052] When the elastic pull rope 8 pulls the pull column 9 out from the limit position of the limit groove 14, the pull column 9 will simultaneously drive the contact 1 15 to move to the side close to the contact 2 16. When the template 1 201 and the template 2 202 are separated from each other by a certain distance, the contact 15 will contact the contact 2 16, so that the external circuit is connected. Therefore, the external controller will control the motor to drive the driving gear 18 to rotate, and the driving gear 18 will drive the ratchet plate 171 meshed with it to move. The ratchet plate 171 will simultaneously drive the L-shaped support plate 172 and The mold bottom plate 2 moves downward, so that the mold bottom plate 2 drives the molded product to move downward, so that the molded product moves out from between template 1 201 and template 2 202, thereby facilitating the subsequent removal of the molded product; when the mold bottom plate 2 moves downward, and template 1 201 and template 2 202 also happen to move to the side close to the top plate 19, as the mold bottom plate 2 moves downward, the position of the top plate 19 remains unchanged, so the top plate 19 can push the molded product above the mold bottom plate 2 up to a certain distance, thereby facilitating the removal of the molded product.

[0053] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A powder metallurgy pressing die, characterized in that: The invention comprises a workbench (1), wherein a mold base plate (2) is installed above the workbench (1), and a template 1 (201) and a template 2 (202) are arranged on the upper end surface of the mold base plate (2), an annular groove (3) is opened inside the template 1 (201), and an annular plate (4) is fixedly installed on the side wall of the template 2 (202), and the annular plate (4) is inserted into the annular groove (3); a support frame (5) is installed above the workbench (1), and an oil cylinder (6) is installed on the upper side of the inner wall of the support frame (5), the telescopic end of the oil cylinder (6) corresponds to the cavity between the template 1 (201) and the template 2 (202), and a pressing head (7) is fixedly installed on the telescopic end of the oil cylinder (6); a discharging mechanism is arranged on one side of the workbench (1), and the discharging mechanism is used to control the template 1 (201) and the template 2 (202) to move away from each other.

2. A powder metallurgy pressing die according to claim 1, characterized in that: The shape of the annular plate (4) is compatible with the shape of the annular groove (3), and the material of the annular plate (4) is an elastic material.

3. The powder metallurgy pressing die according to claim 1, characterized in that: The discharging mechanism comprises a plurality of connecting brackets (501) fixedly mounted on the side wall of the support frame (5), a pulley (502) being rotatably arranged in each of the connecting brackets (501), the pulleys (502) being arranged vertically, an elastic pull rope (8) being wrapped around the surface of each pulley (502), one end of the elastic pull rope (8) being connected to the telescopic end side wall of the oil cylinder (6), and the other end being connected to a pull column (9), two pull columns (9) being arranged and respectively connected to the side walls of the template one (201) and the template two (202); a limiting unit is arranged on the upper surface of the pull column (9), and the limiting unit is used to limit and fix the pull column (9).

4. A powder metallurgy pressing die according to claim 3, characterized in that: A limit frame (10) is fixedly mounted on the side wall of the support frame (5), there are two limit frames (10), the two pull posts (9) are slidably arranged inside the limit frames (10), and a sliding groove adapted to the pull posts (9) is provided inside the limit frames (10).

5. A powder metallurgy pressing die according to claim 4, characterized in that: A limit spring (11) is fixedly mounted on the inner wall of the limit frame (10), and a side of the limit spring (11) away from the limit frame (10) is connected to a side wall of the pull column (9).

6. A powder metallurgy pressing die according to claim 4, characterized in that: The limiting unit comprises an elastic limiting head (12) installed above the pulling column (9), the elastic limiting head (12) being in the shape of an arc, an annular seat (13) being installed on the side wall of the limiting frame (10), a limiting groove (14) being provided on the inner wall of the annular seat (13) at a position corresponding to the elastic limiting head (12), and the shape of the elastic limiting head (12) being compatible with the shape of the limiting groove (14).

7. A powder metallurgy pressing die according to claim 6, characterized in that: The groove wall of the limiting groove (14) is provided with a rounded corner, and the outer surface of the elastic limiting head (12) is sleeved with a spring; the side wall of the pulling column (9) is provided with a trigger unit, and the trigger unit is used to control the removal of the formed product.

8. A powder metallurgy pressing die according to claim 7, characterized in that: The trigger unit comprises a contact point 1 (15) fixedly mounted on the side wall of the pull column (9), a contact point 2 (16) is mounted on the inner wall of the limit frame (10), a fixed frame (17) is mounted above the workbench (1), a driving gear (18) is rotatably mounted in the fixed frame (17), an end of the driving gear (18) is connected to an output end of an external motor, a ratchet plate (171) is slidably mounted in the fixed frame (17), the ratchet plate (171) and the driving gear (18) are meshedly connected, and a side wall of the ratchet plate (171) is connected to the lower end surface of the mold bottom plate (2) via an L-shaped support plate (172).

9. A powder metallurgy pressing die according to claim 8, characterized in that: Two top plates (19) are fixedly mounted above the workbench (1), an embedding groove (20) is provided inside the mold bottom plate (2), the shape of the embedding groove (20) matches the shape of the top plate (19), and the top plate (19) is slidably arranged inside the embedding groove (20).

10. The powder metallurgy pressing die according to claim 8, characterized in that: A limiting bracket adapted to the ratchet plate (171) is arranged inside the fixing frame (17).

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