A powder metallurgy injection molding mold structure

Abstract

The present invention relates to the field of mold technology, and specifically discloses a powder metallurgy injection molding mold structure, the molding mold structure comprising: a fixed mold; and a movable mold, wherein a first movable slider is symmetrically provided on the movable mold, and a second movable slider is symmetrically provided on one side of the fixed mold, the first movable slider and the second movable slider are slidably connected to control the movement of the first movable slider, and two fixed sliders are provided between the two first movable sliders, and the fixed slider is movably provided on one side of the first movable slider. In the molding mold structure of the present invention, a first movable slider, a second movable slider, and a fixed slider are provided between the fixed mold and the movable mold, and are used to move the third movable slider so that a push rod at one end of the third movable slider positions and supports the product, the push rod is perpendicular to the arc surface on the product, and is used to stabilize the product and adjust the movement of each slider, the push rod forms an angle with the horizontal line, and is used to prepare products whose teeth are perpendicular to the arc surface, the gear transmission prepared by the mold is stable, the buffering and vibration absorption effect is good, and the mold can prepare products with a large number of teeth.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a powder metallurgy injection molding mold structure. Background Art

[0002] Moulds are often used in processes such as die forging, extrusion, blanking, cold heading, casting, and powder metallurgy to produce parts with complex shapes.

[0003] In the prior art, an invention with application number CN201922104507.2 is disclosed, and its name is: a powder metallurgy forming mold, in which the lower mold cavity, the second fixing hole, the plug-in rod and the setting of the lower mold are conducive to fixing the lower mold during the work process, and are conducive to discharging the gas inside the metallurgical cavity during the work process to prevent the gas from affecting the metallurgical work.

[0004] However, in the prior art, the mold mentioned in application number CN201922104507.2 cannot mold products with multiple teeth and the teeth are perpendicular to the arc surface. The injection molding effect of products with a large number of teeth is poor, and the molding process is too complicated. Summary of the Invention

[0005] The object of the present invention is to provide a powder metallurgy injection molding die structure to solve the problems in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A powder metallurgy injection molding die structure, the molding die structure comprising:

[0008] Fixed mold;

[0009] and a movable mold, wherein a first movable slider is symmetrically provided on the movable mold, and a second movable slider is symmetrically provided on one side of the fixed mold. The first movable slider is slidably connected to the second movable slider and is used to control the movement of the first movable slider. Two fixed sliders are provided between the two first movable sliders, and the fixed slider is movably arranged on one side of the first movable slider.

[0010] Furthermore, a plurality of guide rods are fixedly provided on the movable mold, a first mold core is fixedly provided on the movable mold, two sliding blocks are provided on one side of the first mold core, an inclined hole is provided on the sliding block, and sliding grooves for installing the first movable slider are provided at both ends of the first mold core, and pads are symmetrically provided inside the sliding grooves.

[0011] Furthermore, a second mold core is fixedly provided on one side of the fixed mold, and the second mold core is arranged corresponding to the first mold core. A nozzle is fastened on the fixed mold for connecting the second mold core to inject powder metallurgy, and two second movable sliders are fixedly provided at both ends of the second mold core.

[0012] Furthermore, a connecting block is fixedly provided on one side of the fixed mold, a sliding rod is fixedly provided on one side of the connecting block, and the sliding rod cooperates with the oblique hole.

[0013] Furthermore, a protrusion is fixedly provided at the bottom of the first movable slider, a second inclined surface is provided on one side of the first movable slider, a matching block is fixedly provided on the other side, a matching groove is provided on the second inclined surface, a through groove is provided on one side of the first movable slider, and a first spring for connecting the fixed slider is fixed in the through groove.

[0014] Furthermore, a first inclined groove is provided on one side of the second movable slider, and a matching rod is fixed on the first inclined groove.

[0015] Furthermore, the protrusion cooperates with the sliding groove, the pad is slidably arranged on the protrusion to limit the protrusion, and the matching groove cooperates with the matching rod.

[0016] Furthermore, two clamping blocks are provided on one side of the fixed slider, a groove is provided between the two clamping blocks, a movable groove is symmetrically provided in the fixed slider, a top groove is connected in the movable groove, the two top grooves are connected, an open groove is provided on one side of the fixed slider, the open groove is provided at the connection point of the two top grooves, and a product is provided between the two fixed sliders.

[0017] The groove is movably matched with the matching block.

[0018] Furthermore, a third movable slider is slidably provided in the movable groove, an inner groove is provided on one side of the third movable slider, a second spring is fixedly provided in the inner groove, the second spring is fixedly connected to the bottom of the movable groove, and a push rod is fixedly provided at one end of the third movable slider.

[0019] The top rod is matched with the top groove.

[0020] Furthermore, the push rod is perpendicular to the arc surface on the product, and the push rod cooperates with the teeth on the product to be used for product production positioning.

[0021] Beneficial effects of the present invention:

[0022] 1. The molding die structure of the present invention comprises a first movable slider, a second movable slider, and a fixed slider disposed between the fixed die and the movable die. The first movable slider is used to move the third movable slider so that a push rod at one end of the third movable slider positions and supports the product. The push rod is disposed perpendicular to the arc surface on the product to stabilize the product.

[0023] 2. The molding die structure of the present invention adjusts the movement of each slider, and the push rod forms an angle with the horizontal line, which is used to prepare products with teeth perpendicular to the arc surface. The gear transmission prepared by this die is stable, the buffering and vibration absorption effect is good, and the die can prepare products with a large number of teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is an exploded schematic diagram of the molding die structure of the present invention;

[0026] Figure 2 This is a front view of the molding die structure of the present invention;

[0027] Figure 3 This is a cross-sectional view of the molding die structure of the present invention;

[0028] Figure 4 This invention Figure 3 A in the middle is an enlarged structural diagram;

[0029] Figure 5 It is a schematic structural diagram of the third movable slider of the present invention. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0031] A powder metallurgy injection molding die structure, such as Figure 1 As shown, the molding mold structure includes a fixed mold 2 and a movable mold 1. The movable mold 1 is provided with a symmetrically distributed first movable slider 3, and one side of the fixed mold 2 is provided with a symmetrically distributed second movable slider 4. The first movable slider 3 and the second movable slider 4 are arranged correspondingly. A fixed slider 5 is provided on one side of the first movable slider 3. The two fixed sliders 5 are arranged between the two first movable sliders 3, and a product 6 is provided between the two fixed sliders 5.

[0032] like Figure 1 、 Figure 2 、 Figure 3 As shown, the movable mold 1 is fixedly provided with guide rods 11 distributed in an array, the movable mold 1 is fixedly provided with a first mold core 10, one side of the first mold core 10 is provided with two slide blocks 13, and the slide blocks 13 are provided with inclined holes 14.

[0033] Both ends of the first mold core 10 are provided with slide grooves 12 for installing the first movable slider 3. Symmetrically distributed pads 15 are provided inside the slide grooves 12. The pads 15 are used to limit the first movable slider 3 to prevent the first movable slider 3 from vertically escaping from the slide grooves 12.

[0034] A nozzle 21 is fastened to the fixed mold 2, and a second mold core 24 is fixed on one side of the fixed mold 2. The nozzle 21 is connected to the second mold core 24. After the powder raw material is metallurgically heated, the powder metallurgy is injected into between the first mold core 10 and the second mold core 24 through the nozzle 21. The two second movable sliders 4 are respectively arranged at both ends of the second mold core 24 and are fixedly connected to the fixed mold 2.

[0035] A connecting block 22 is provided on one side of the fixed mold 2, and an inclined sliding rod 23 is fixed on one side of the connecting block 22. The sliding rod 23 is slidably connected to the fixed mold 2 through the connecting block 22. The sliding rod 23 cooperates with the inclined hole 14. A first inclined groove is provided on the side of the second movable slider 4 close to the second mold core 24, and a cooperating rod 41 is fixed on the first inclined groove.

[0036] like Figure 1 、 Figure 4 As shown, a protrusion 31 is fixedly provided at the bottom of the first movable slider 3, the protrusion 31 is slidably connected to the slide groove 12, and the pad 15 is slidably connected to the protrusion 31, a second inclined surface is provided on one side of the first movable slider 3, and a matching block 33 is fixedly provided on the other side, a matching groove 32 is provided on the second inclined surface, and the matching groove 32 is slidably connected to the matching rod 41, a through groove 34 is provided on one side of the first movable slider 3, and a first spring 35 is fixed in the through groove 34 for connecting to the ejecting fixed slider 5.

[0037] Two clamping blocks 51 are provided on one side of the fixed slider 5, and a groove 52 is provided between the two clamping blocks 51. The groove 52 cooperates with the mating block 33, and the mating block 33 moves in the groove 52. The fixed slider 5 is inclined and symmetrically distributed with moving grooves 53. The moving grooves 53 are connected with a top groove 54. The two top grooves 54 are connected. An open groove is provided on the side of the fixed slider 5 away from the clamping block 51. The open groove is located at the connection point of the two top grooves 54, and the open groove is connected to the two top grooves 54.

[0038] like Figure 3-Figure 5 As shown, a third movable slider 7 is slidingly provided in the movable groove 53, and an inner groove 71 is provided on one side of the third movable slider 7. A second spring 72 is installed in the inner groove 71, and one end of the second spring 72 is fixedly connected to the inner groove 71, and the other end is fixedly connected to the bottom of the movable groove 53.

[0039] A push rod 73 is fixedly provided on one end of the third movable slider 7 close to the inner groove 71. The push rod 73 is slidably connected to the top groove 54. A gear ring 61 is provided on the product 6. The push rod 73 is perpendicular to the arc surface of the gear ring 61, and the push rod 73 is positioned and matched with the teeth on the gear ring 61.

[0040] When in use, a method of using a powder metallurgy injection molding mold structure is as follows:

[0041] When the movable mold 1 is brought close to the fixed mold 2, the two first movable sliders 3 move toward each other through the cooperation of the cooperation groove 32 and the cooperation rod 41, and the fixed slider 5 abuts against one end of the first mold core 10. When the first movable sliders 3 move toward each other, the first spring 35 is compressed, and the cooperation block 33 moves with the first movable slider 3 and moves deep into the groove 52 until it abuts against the inner wall deep in the groove 52.

[0042] During this process, the first movable slider 3 pushes the third movable slider 7 to move into the movable groove 53, compressing the second spring 72. The push rod 73 is perpendicular to the arc surface of the ring gear 61. When the movable mold 1 and the fixed mold 2 are closed, the first spring 35 and the second spring 72 are in a compressed state.

[0043] Injection molding process: The powder metallurgy is injected into the space between the first mold core 10 and the second mold core 24 through the nozzle 21 until the injection is completed. After the product is formed, the ejector pin 73 is positioned and matched with the teeth on the gear ring 61.

[0044] During the mold opening process of the movable mold 1 and the fixed mold 2, the first spring 35 is in a compressed state, pushing the first movable slider 3 to move horizontally in the opposite direction. At this time, the second spring 72 compressed on the fixed slider 5 pushes the first movable slider 3 to move horizontally until the matching block 33 moves from the inner wall deep in the groove 52 to fit the inner wall on the other side. The matching block 33 stops moving, and the mold opening process is completed. The fixed slider 5 and the first movable slider 3 both return to their initial positions, and the product in the mold is ejected by the ejector. The powder metallurgy injection molding process is completed, and some blanks with specific shapes and sizes can be processed. Molds can be produced for products with multiple teeth and a large number of teeth perpendicular to the arc surface. The mold structure is simple, easy to maintain, easy to assemble, and reliable in connection.

[0045] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A powder metallurgy injection molding mold structure, characterized in that: The forming mold structure includes: Fixed mold (2); and a movable mold (1), wherein a first movable slider (3) is symmetrically provided on the movable mold (1), a second movable slider (4) is symmetrically provided on one side of the fixed mold (2), the first movable slider (3) and the second movable slider (4) are slidably connected to control the movement of the first movable slider (3), two fixed sliders (5) are provided between the two first movable sliders (3), and the fixed slider (5) is movably provided on one side of the first movable slider (3); The movable mold (1) is fixedly provided with a plurality of guide rods (11), the movable mold (1) is fixedly provided with a first mold core (10), one side of the first mold core (10) is provided with two slide blocks (13), the slide blocks (13) are provided with inclined holes (14), both ends of the first mold core (10) are provided with slide grooves (12) for mounting the first movable slider (3), and pads (15) are symmetrically provided inside the slide grooves (12); A second mold core (24) is fixedly provided on one side of the fixed mold (2), and the second mold core (24) is arranged corresponding to the first mold core (10). A nozzle (21) is fastened on the fixed mold (2) for connecting the second mold core (24) to inject powder metallurgy, and two second movable sliders (4) are fixedly provided at both ends of the second mold core (24); A protrusion (31) is fixedly provided at the bottom of the first movable slider (3), a second inclined surface is provided on one side of the first movable slider (3), a matching block (33) is fixedly provided on the other side, a matching groove (32) is provided on the second inclined surface, a through groove (34) is provided on one side of the first movable slider (3), and a first spring (35) for connecting to the fixed slider (5) is fixedly provided in the through groove (34); Two clamping blocks (51) are provided on one side of the fixed slider (5), a groove (52) is provided between the two clamping blocks (51), a movable groove (53) is symmetrically provided in the fixed slider (5), a top groove (54) is provided in the movable groove (53), the two top grooves (54) are connected, an open groove is provided on one side of the fixed slider (5), the open groove is provided at the connection point of the two top grooves (54), and a product (6) is provided between the two fixed sliders (5); The groove (52) is movably engaged with the matching block (33); A third movable slider (7) is slidably provided in the movable groove (53), an inner groove (71) is provided on one side of the third movable slider (7), a second spring (72) is fixedly provided in the inner groove (71), the second spring (72) is fixedly connected to the bottom of the movable groove (53), and a top rod (73) is fixedly provided at one end of the third movable slider (7); The top rod (73) cooperates with the top groove (54); The push rod (73) is perpendicular to the arc surface on the product (6), and the push rod (73) cooperates with the teeth on the product (6) to be used for production positioning of the product (6).

2. A powder metallurgy injection molding die structure according to claim 1, characterized in that: A connecting block (22) is fixedly provided on one side of the fixed mold (2), a sliding rod (23) is fixedly provided on one side of the connecting block (22), and the sliding rod (23) cooperates with the inclined hole (14).

3. The powder metallurgy injection molding die structure according to claim 1, characterized in that: A first inclined groove is provided on one side of the second movable slider (4), and a matching rod (41) is fixedly provided on the first inclined groove.

4. The powder metallurgy injection molding die structure according to claim 3, characterized in that: The protrusion (31) cooperates with the slide groove (12), the pad (15) is slidably arranged on the protrusion (31) and is used to limit the protrusion (31), and the matching groove (32) cooperates with the matching rod (41).

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