One-die two-output forming die for powder metallurgy

Abstract

The utility model discloses a one-die two-out powder metallurgy forming die, which comprises an upper punch bearing plate, a lower secondary punch bearing plate, a lower punch bearing plate and a female die, fast-assembly components are arranged in the upper punch bearing plate and the lower secondary punch bearing plate, the bottom end of the upper punch bearing plate is connected with an upper punch component through the fast-assembly components, and the bottom end of the lower punch bearing plate is connected with a lower punch component through the fast-assembly components. The upper punching assembly is used for sealing a female die from the upper portion and transmitting pressure to a powder piece from top to bottom, the top end of the lower secondary punching bearing plate is connected with a lower secondary punching assembly through a quick assembly, the lower secondary punching assembly is used for pressing a formed product in the pressing direction, and a lower punching assembly is arranged at the top end of the lower punching bearing plate. According to the utility model, unique structural design is adopted, the structure is simple, two products can be produced at the same time in the one-step forming process, the yield and the production efficiency are greatly improved, and the labor cost and investment are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to a one-mold two-outlet forming die for powder metallurgy. Background Art

[0002] Compression molding is the most widely used forming method in powder metallurgy production. Compression molding involves loading metal powder into a steel mold cavity and applying pressure to the powder through die punching to form it.

[0003] The piston is a part of the refrigerator air compressor, and its structure is shown in the figure ( Figure 1 ) is a relatively small part with a relatively complex structure. It cannot be mass-produced through ordinary processing, and the production efficiency is low and the manufacturing cost is high;

[0004] Currently, most of these parts are produced using powder metallurgy methods. The molds used for powder metallurgy generally include an upper punch, a female mold, a lower punch, and a lower secondary punch. Each female mold has only one cavity, so a mold can only produce one part at a time, and production efficiency is difficult to improve.

[0005] Therefore, the utility model provides a one-mold two-outlet powder metallurgy forming die to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a one-mold, two-outlet powder metallurgy forming die, which solves the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a one-mold two-outlet powder metallurgy forming die, comprising an upper punch pressure plate, a lower second punch pressure plate, a lower punch pressure plate and a female die, the upper punch pressure plate and the lower second punch pressure plate are both provided with quick-release components, the bottom end of the upper punch pressure plate is connected to the upper punch component through the quick-release component, the upper punch component is used to seal the female die from the top and transmit pressure to the powder part from top to bottom, the top end of the lower second punch pressure plate is connected to the lower second punch component through the quick-release component, the lower second punch component is used to press the blank into a product in the pressing direction, the top end of the lower punch pressure plate is provided with a lower punch component, the lower punch component is used to seal the female die from the bottom and transmit pressure to the powder part from bottom to top.

[0008] Preferably, the quick-release assembly includes a locking shaft, a positioning hook, a linkage gear plate, a transmission shaft, a transmission worm and a matching worm gear, the upper pressure plate and the lower second pressure plate are rotatably connected to a plurality of locking shafts, one end of each locking shaft is fixedly connected to the positioning hook, the inner walls of the upper pressure plate and the lower second pressure plate are rotatably connected to the linkage gear plate, the outer side of each locking shaft is fixedly connected to a spur gear, and the spur gear is meshed with the linkage gear plate, and the outer sides of the upper pressure plate and the lower second pressure plate are rotatably connected to the transmission shaft, one end of the transmission shaft located inside the upper pressure plate or the lower second pressure plate is fixedly connected to the transmission worm, wherein the top of the locking shaft corresponding to the transmission worm is fixedly connected to the matching worm gear, and the matching worm gear is meshed with the transmission worm.

[0009] Preferably, the upper punch assembly includes an upper punch ring, an upper punch return groove and an upper punch. The upper punch ring is assembled at the bottom end of the upper punch pressure plate and is connected to the positioning hook at the upper punch pressure plate. Two upper punch return grooves are opened inside the upper punch ring, and the upper punches are assembled inside the two upper punch return grooves.

[0010] Preferably, the lower second punch assembly includes a lower second punch ring, a lower second punch return groove and a lower second punch head. The lower second punch ring is assembled on the top of the lower second punch pressure plate and is connected to the positioning hook at the lower second punch pressure plate. Two lower second punch return grooves are opened inside the lower second punch ring, and the interiors of the two lower second punch return grooves are both equipped with lower second punch heads.

[0011] Preferably, the lower punch assembly includes a lower punch ring, a lower punch pad and a lower punch head. Both ends of the top of the lower punch pressure plate are connected to the lower punch ring by screws. A lower punch pad is provided inside each of the lower punch rings, and a lower punch head is assembled inside the lower punch pad. An avoidance channel is provided in the middle of the lower punch head.

[0012] Preferably, cavities are symmetrically opened on both sides of the female mold, and the upper punch extends from the top of the cavity to the inside of the cavity, the lower punch extends from the bottom of the cavity to the inside of the cavity, and the lower two punches extend through the avoidance channel to the inside of the cavity.

[0013] Preferably, the inner walls of the upper punching ring and the lower two punching rings are fixedly connected with a plurality of locking plates corresponding one to one with the positioning hooks, one end of the locking plate is provided with a locking groove, and the positioning hooks are snap-connected to the inside of the locking groove.

[0014] Preferably, a pad is provided between the lower punch ring and the lower punch pressure plate.

[0015] Beneficial effects

[0016] The utility model provides a one-mold, two-outlet powder metallurgy forming die. Compared with the existing technology, it has the following advantages:

[0017] The one-mold, two-outlet powder metallurgy forming die adopts a unique structural design and a simple structure, which enables two products to be produced simultaneously in a one-time forming process, greatly improving the output and production efficiency and reducing labor costs and investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a piston;

[0019] Figure 2 It is a schematic diagram of the utility model;

[0020] Figure 3 It is a half-section schematic diagram of the utility model;

[0021] Figure 4 It is a schematic diagram of the quick-install assembly of the utility model;

[0022] Figure 5 It is a schematic diagram of the lower two punch components of the utility model;

[0023] Figure 6 It is a schematic diagram of the lower punch assembly of the utility model;

[0024] Figure 7 It is a schematic diagram of the female mold of the present utility model.

[0025] In the figure, 1 is the upper punch pressure plate; 2 is the lower punch pressure plate; 3 is the lower punch pressure plate; 4 is the female die; 5 is the quick-release assembly; 6 is the upper punch assembly; 7 is the lower punch assembly; 8 is the lower punch assembly; 9 is the locking shaft; 10 is the positioning hook; 11 is the linkage gear plate; 12 is the transmission shaft; 13 is the transmission worm; 14 is the matching worm gear; 15 is the upper punch ring; 16 is the upper punch return groove; 17 is the upper punch; 18 is the lower punch ring; 19 is the lower punch return groove; 20 is the lower punch; 21 is the lower punch ring; 22 is the lower punch pad; 23 is the lower punch; 24 is the cavity. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 2-7, a one-die two-out powder metallurgy forming die, comprising an upper punch pressure plate 1, a lower second punch pressure plate 2, a lower punch pressure plate 3 and a female die 4, the upper punch pressure plate 1 and the lower second punch pressure plate 2 are both provided with a quick-release assembly 5, the bottom end of the upper punch pressure plate 1 is connected to an upper punch assembly 6 through the quick-release assembly 5, the upper punch assembly 6 is used to seal the female die 4 from the top and transmit pressure to the powder part from top to bottom, the top of the lower second punch pressure plate 2 is connected to a lower second punch assembly 7 through the quick-release assembly 5, the lower second punch assembly 7 is used to press the blank into a product in the pressing direction, the top of the lower punch pressure plate 3 is provided with a lower punch assembly 8, the lower punch assembly 8 is used to seal the female die 4 from the bottom and transmit pressure to the powder part from bottom to top;

[0028] The quick-release assembly 5 includes a locking shaft 9, a positioning hook 10, a linkage toothed disc 11, a transmission shaft 12, a transmission worm 13 and a matching worm gear 14. The upper pressure plate 1 and the lower second pressure plate 2 are rotatably connected to a plurality of locking shafts 9, one end of each locking shaft 9 is fixedly connected to the positioning hook 10, the inner walls of the upper pressure plate 1 and the lower second pressure plate 2 are rotatably connected to the linkage toothed disc 11, the outer side of each locking shaft 9 is fixedly connected to a spur gear, and the spur gear is meshed with the linkage toothed disc 11, and the outer sides of the upper pressure plate 1 and the lower second pressure plate 2 are rotatably connected to the transmission shaft 12, one end of the transmission shaft 12 located inside the upper pressure plate 1 or the lower second pressure plate 2 is fixedly connected to the transmission worm 13, wherein the top of the locking shaft 9 corresponding to the transmission worm 13 is fixedly connected to the matching worm gear 14, and the matching worm gear 14 is meshed with the transmission worm 13;

[0029] The upper punch assembly 6 includes an upper punch ring 15, an upper punch return groove 16 and an upper punch 17. The upper punch ring 15 is assembled at the bottom end of the upper punch pressure plate 1 and is connected to the positioning hook 10 on the upper punch pressure plate 1. Two upper punch return grooves 16 are provided inside the upper punch ring 15, and the upper punch 17 is assembled inside the two upper punch return grooves 16.

[0030] Furthermore, in order to ensure the consistency of product height during the pressing production process, the height difference between the two upper punches 17 is controlled within 0.01;

[0031] The lower second punch assembly 7 includes a lower second punch ring 18, a lower second punch return groove 19 and a lower second punch 20. The lower second punch ring 18 is assembled on the top of the lower second punch pressure plate 2 and is connected to the positioning hook 10 at the lower second punch pressure plate 2. Two lower second punch return grooves 19 are provided inside the lower second punch ring 18, and the lower second punch 20 is assembled inside the two lower second punch return grooves 19.

[0032] Furthermore, the inner walls of the upper punching ring 15 and the lower two punching rings 18 are fixedly connected with a plurality of matching lock plates corresponding to the positioning hooks 10 one by one. A matching lock groove is provided at one end of the matching lock plate, and the positioning hooks 10 are connected to the inside of the matching lock groove. By utilizing the structural cooperation between the matching lock plate and the matching lock groove, when the positioning hook 10 rotates toward the matching lock plate, the positioning hook 10 can be driven to snap into the matching lock groove, thereby forming a quick assembly of the upper punching ring 15 or the lower two punching rings 18;

[0033] In detail, in order to ensure the consistency of the step depth of the product during the pressing production process, the height difference between the two lower punches 20 is controlled within 0.01;

[0034] The lower punch assembly 8 includes a lower punch ring 21, a lower punch pad 22 and a lower punch 23. Both ends of the top of the lower punch pressure plate 3 are connected to the lower punch ring 21 by screws. A lower punch pad 22 is provided inside each lower punch ring 21, and a lower punch 23 is assembled inside the lower punch pad 22. An escape channel is provided in the middle of the lower punch 23.

[0035] Furthermore, a spacer is provided between the lower punch ring 21 and the lower punch pressure plate 3;

[0036] Furthermore, in order to ensure the consistency of product height during the pressing production process, the height difference between the two lower punches 23 should be controlled within 0.01. Taking into account the surface chamfer of the lower punch 23, it may be damaged during the pressing process. When the surface is repaired, the height of the two lower punches will be inconsistent, thereby affecting the height quality of the product. By designing a pad to adjust the height of the pad to ensure the product height, the cost of controlling the height by repairing the two lower punch dies is reduced. Considering the characteristics of the powder metallurgy pressing process, the lower punch cannot be "pressed to death", so the two lower punches 23 and the lower punch ring 21 are designed to be separate and independent, and a certain gap is retained therebetween.

[0037] The cavity 24 is symmetrically formed on both sides of the female die 4, and the upper punch 17 extends from the top of the cavity 24 to the inside of the cavity 24, the lower punch 23 extends from the bottom of the cavity 24 to the inside of the cavity 24, and the lower second punch 20 extends through the avoidance channel to the inside of the cavity 24;

[0038] Furthermore, in order to ensure the stability of the piston during pressing, the two lower punches 23 are arranged symmetrically with respect to the central axis of the female die 4, and the cavity 24 passes through the female die 4;

[0039] In summary, after experimental verification, the piston manufactured by the above scheme has been verified to meet the performance requirements of the refrigerator air compressor piston. It adopts a unique structural design and a simple structure, which enables two products to be produced simultaneously in a one-time molding process, greatly improving the output and production efficiency, and reducing labor costs and investment;

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] Working principle: when the upper punch 17 or the lower second punch 20 is damaged and needs to be repaired or replaced, first rotate the corresponding transmission shaft 12 to prompt the transmission worm 13 to shift the matching worm gear 14, thereby driving the locking shaft 9 connected to the matching worm gear 14 to rotate, and cooperate with the setting of the locking shaft 9 and the spur gear, the spur gear can be used to shift the linkage gear plate 11. Since each spur gear is connected to the linkage gear plate 11, the linkage gear plate 11 can be used to shift other spur gears, thereby driving multiple locking shafts 9 to rotate at the same time, prompting the positioning hook 10 to move out of the matching lock groove, thereby forming the unlocking of the upper punching ring 15 or the lower second punching ring 18, and then removing the upper punching ring 15 or the lower second punching ring 18 to release the restriction on the upper punch 17 or the lower second punch 20, so that the upper punch 17 or the lower second punch 20 can be quickly repaired or replaced, greatly improving the overall convenience.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-mold, two-outlet powder metallurgy forming die, characterized by: The invention comprises an upper punch pressure plate (1), a lower second punch pressure plate (2), a lower punch pressure plate (3) and a female die (4); a quick-release assembly (5) is provided inside the upper punch pressure plate (1) and the lower second punch pressure plate (2); the bottom end of the upper punch pressure plate (1) is connected to an upper punch assembly (6) via the quick-release assembly (5); the upper punch assembly (6) is used to seal the female die (4) from the top and transmit pressure to the powder part from the top to the bottom; the top end of the lower second punch pressure plate (2) is connected to a lower second punch assembly (7) via the quick-release assembly (5); the lower second punch assembly (7) is used to press the blank into a product in the pressing direction; the top end of the lower punch pressure plate (3) is provided with a lower punch assembly (8); the lower punch assembly (8) is used to seal the female die (4) from the bottom and transmit pressure to the powder part from the bottom to the top.

2. The one-mold, two-outlet powder metallurgy forming die according to claim 1, characterized in that: The quick-install assembly (5) includes a locking shaft (9), a positioning hook (10), a linkage toothed disc (11), a transmission shaft (12), a transmission worm (13) and a matching worm wheel (14). The interiors of the upper punch pressure plate (1) and the lower second punch pressure plate (2) are both rotatably connected to a plurality of locking shafts (9). One end of each locking shaft (9) is fixedly connected to the positioning hook (10). The inner walls of the upper punch pressure plate (1) and the lower second punch pressure plate (2) are both rotatably connected to the linkage toothed disc (11). The outer wall of each locking shaft (9) is fixedly connected to the positioning hook (10). The upper and lower second punch pressure plates (1) and the lower second punch pressure plates (2) are both fixedly connected with spur gears on the sides, and the spur gears are meshed with the linkage gear disc (11), and the outer sides of the upper punch pressure plate (1) and the lower second punch pressure plate (2) are both rotatably connected with a transmission shaft (12), and one end of the transmission shaft (12) located inside the upper punch pressure plate (1) or the lower second punch pressure plate (2) is fixedly connected with a transmission worm (13), wherein the top of the locking shaft (9) corresponding to the transmission worm (13) is fixedly connected with a matching worm wheel (14), and the matching worm wheel (14) is meshed with the transmission worm wheel (13).

3. The one-mold, two-outlet powder metallurgy forming die according to claim 2, characterized in that: The upper punch assembly (6) includes an upper punch ring (15), an upper punch return groove (16) and an upper punch (17). The upper punch ring (15) is assembled at the bottom end of the upper punch pressure plate (1) and is connected to the positioning hook (10) at the upper punch pressure plate (1). Two upper punch return grooves (16) are provided inside the upper punch ring (15), and the upper punch (17) is assembled inside the two upper punch return grooves (16).

4. The one-mold, two-outlet powder metallurgy forming die according to claim 3, characterized in that: The lower second punch assembly (7) includes a lower second punch ring (18), a lower second punch return groove (19) and a lower second punch head (20). The lower second punch ring (18) is assembled on the top of the lower second punch pressure plate (2) and is connected to the positioning hook (10) at the lower second punch pressure plate (2). Two lower second punch return grooves (19) are provided inside the lower second punch ring (18), and the lower second punch heads (20) are both assembled inside the two lower second punch return grooves (19).

5. The one-mold, two-outlet powder metallurgy forming die according to claim 4, characterized in that: The lower punch assembly (8) includes a lower punch ring (21), a lower punch pad (22) and a lower punch (23), both ends of the top of the lower punch pressure plate (3) are connected to the lower punch ring (21) by screws, each lower punch ring (21) is provided with a lower punch pad (22), and the lower punch (23) is assembled inside the lower punch pad (22), and an avoidance channel is provided in the middle of the lower punch (23).

6. The one-mold, two-outlet powder metallurgy forming die according to claim 5, characterized in that: The cavity (24) is symmetrically formed on both sides of the interior of the female die (4), and the upper punch (17) extends from the top end of the cavity (24) to the interior of the cavity (24), the lower punch (23) extends from the bottom end of the cavity (24) to the interior of the cavity (24), and the lower second punch (20) extends through the avoidance channel to the interior of the cavity (24).

7. The one-mold, two-outlet powder metallurgy forming die according to claim 4, characterized in that: The inner walls of the upper punching ring (15) and the lower two punching rings (18) are fixedly connected with a plurality of locking plates corresponding one to one with the positioning hooks (10), one end of the locking plate is provided with a locking groove, and the positioning hooks (10) are snap-connected inside the locking groove.

8. The one-mold, two-outlet powder metallurgy forming die according to claim 5, characterized in that: A cushion block is also provided between the lower punch ring (21) and the lower punch pressure plate (3).

Images