Shaping tool for deformation of inner cavity of powder metallurgy product

Abstract

The utility model discloses a shaping tool for deformation of an inner cavity of a powder metallurgy product, which comprises a lower die holder, a metallurgy product body and a punch sleeve, the bottom end of the punch sleeve is provided with a punch, the top of the lower die holder is provided with a sliding chute, the inner wall of the bottom of the sliding chute is fixedly connected with two limit bolts, and the limit bolts are fixedly connected with the lower die holder. A first sliding block and a second sliding block are slidably connected into the sliding groove and located between the two limiting bolts, one end of the first sliding block and one end of the second sliding block are both fixedly connected with shaping heads, the shaping heads are located in the metallurgical product body, and a product fixing plate is fixedly connected to the top of the lower die base. And one side of the product fixing plate is fixedly connected with two fixing blocks. According to the metallurgical product shaping device, the first sliding block and the second sliding block move in the sliding groove under extrusion of the punch, so that the shaping head is driven to move, a metallurgical product body is shaped, and the phenomena of strain and succulence are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of shaping tooling, in particular to a shaping tooling used for the inner cavity deformation of powder metallurgy products. Background Art

[0002] Metal powder injection molding (MIM) is a new forming technology that has rapidly developed internationally in recent years. Products sintered using MIM not only possess the same complex shapes and high precision as those obtained by plastic injection molding, but also possess physical, chemical, and mechanical properties similar to forgings. However, due to factors such as the heating rate, sintering temperature and time, cooling rate, sintering atmosphere, and sintering pressure during the sintering process, stress release occurs, resulting in dimensional deviations, deformation, and other adverse reactions in sintered parts. Therefore, it is necessary to correct the internal deformation of powder metallurgy products.

[0003] At present, most of the existing inner cavity deformation and shaping tooling uses a punch to directly contact the inner cavity of the product to shape it, so as to achieve the inner cavity size of the shaped product and ensure that the product width meets the size specifications, but it is prone to stretching and fleshing, affecting the product appearance and performance. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing inner cavity deformation shaping tooling in the prior art mostly adopts a punch to directly contact the inner cavity of the product to shape the inner cavity size of the shaped product and ensure that the product width meets the size specifications, but is prone to strain and fleshiness, which affects the appearance and performance of the product. A shaping tooling for the inner cavity deformation of powder metallurgy products is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The cam is secured to the bottom of the moulding machine and has a locking plate which is secured on both sides of the moulding machine for locking the mould into place when the work is to be performed The cam is secured on the bottom of the moulding machine for locking the mould in place When the mould is unlocked, the mould is then unlocked Having a secure lock on the mould

[0007] Furthermore, one side of each of the first slider and the second slider is fixedly connected to a first spring, and the other end of the first spring is in contact with the limiting latch.

[0008] Furthermore, a guide groove is provided on the top of the stripping block, an insert block is slidably connected in the guide groove, and the insert block is fixedly plugged into the product fixing plate.

[0009] Furthermore, a second spring is fixedly connected to one side of the insert block, and the other end of the second spring is fixedly connected to an inner wall of one end of the guide groove.

[0010] Furthermore, two mounting holes are provided on the top of the product fixing plate.

[0011] Furthermore, the sum of the 3 / 4 head dimensions of the first slider and the second slider is less than or equal to the product inner cavity value -0.1mm.

[0012] The beneficial effects of the utility model are:

[0013] 1. By squeezing the punch, the first slider and the second slider move in the slide groove, thereby driving the shaping head to move, and then shaping the metallurgical product body to prevent strain and fleshiness.

[0014] 2. By pushing the material-removing block, the protrusion is driven to move, thereby pushing the metallurgical product body to move, and then pushing the metallurgical product body out from between the two fixed blocks, so as to take the shaped metallurgical product body.

[0015] 3. The sliding connection design between the insert block and the guide groove guides the movement of the stripping block to improve the stability of the stripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a shaping tool for inner cavity deformation of powder metallurgy products proposed in the present invention;

[0017] Figure 2 This is a rear view structural diagram of a shaping tool for inner cavity deformation of powder metallurgy products proposed in the present invention;

[0018] Figure 3 The utility model is a schematic diagram of the explosion structure of a shaping tool for the inner cavity deformation of powder metallurgy products.

[0019] In the figure: 1. Lower die base; 2. Slide; 3. Limit pin; 4. First slide; 5. Second slide; 6. Punch sleeve; 7. Punch; 8. Shaping head; 9. First spring; 10. Product fixing plate; 11. Fixing block; 12. Material stripping block; 13. Guide groove; 14. Second spring; 15. Protrusion; 16. Metallurgical product body; 17. Insert block; 18. Mounting hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 3 , a shaping tool for deformation of the inner cavity of a powder metallurgy product, comprising a lower die base 1, a metallurgical product body 16 and a punch sleeve 6, a punch 7 is provided at the bottom end of the punch sleeve 6, a slide groove 2 is provided on the top of the lower die base 1, and two limit pins 3 are fixed to the bottom inner wall of the slide groove 2 by bolts. The limit pins 3 prevent the product from moving too much left and right when stretched. A first slider 4 and a second slider 5 are slidably connected in the slide groove 2, and one end of the first slider 4 and the second slider 5 are both provided with an inclined surface. The inclined surfaces of the two first sliders 4 and the second sliders 5 form a V-shaped structure. The first slider 4 and the second slider 5 are located between the two limit pins 3, and one end of the first slider 4 and the second slider 5 are both integrally formed with a shaping head 8. The shaping head 8 is located in the metallurgical product body 16, and when the punch 7 is extruded The first slider 4 and the second slider 5 move in the slide groove 2, thereby driving the shaping head 8 to move, and then shaping the metallurgical product body 16. The top of the lower die base 1 is fixed with a product fixing plate 10 by bolts. One side of the product fixing plate 10 is integrally formed with two fixing blocks 11. The metallurgical product body 16 is located between the two fixing blocks 11. The top of the lower die base 1 is slidably inserted with a stripping block 12. The stripping block 12 is located below the product fixing plate 10. One end of the stripping block 12 is integrally formed with two protrusions 15. Pushing the stripping block 12 drives the protrusion 15 to move, thereby pushing the metallurgical product body 16 to move, and then pushing the metallurgical product body 16 out from between the two fixing blocks 11 so as to take the shaped metallurgical product body 16.

[0022] The first and second slide blocks 4 and 5 are welded with a first spring 9 on one side, and the other end of the first spring 9 contacts the limit latch 3. Under the action of the first spring 9, the first slide block 4 and the second slide block 5 are reset. A guide groove 13 is provided on the top of the stripping block 12, and an insert block 17 is slidably connected in the guide groove 13. The insert block 17 is fixedly plugged into the product fixing plate 10. The design of the sliding connection between the insert block 17 and the guide groove 13 guides the movement of the stripping block 12 to improve the stability of the stripping. A second spring 14 is welded on one side of the insert block 17, and the other end of the second spring 14 is fixedly connected to the inner wall of one end of the guide groove 13. Under the action of the second spring 14, the stripping block 12 is reset. Two mounting holes 18 are provided on the top of the product fixing plate 10. The sum of the 3 / 4 head sizes of the first slide block 4 and the second slide block 5 is less than or equal to the product inner cavity value -0.1mm, thereby achieving a good product placement effect, and the contact surface with the product is an inclined surface, so that the slider pulling force is concentrated at the position where the product is severely deformed.

[0023] The working principle of this embodiment is as follows: when in use, first, the metallurgical product body 16 is inserted between the two fixed blocks 11, and the shaping head 8 is located in the metallurgical product body 16. Then, under the extrusion of the punch 7, the first slider 4 and the second slider 5 are moved in the slide groove 2, thereby driving the shaping head 8 to move, and then shaping the metallurgical product body 16. After that, the punch 7 is raised, and then the first slider 4 and the second slider 5 are reset under the action of the first spring 9. Then, the stripping block 12 is pushed to drive the protrusion 15 to move, thereby pushing the metallurgical product body 16 to move, and then the metallurgical product body 16 is pushed out from between the two fixed blocks 11 to facilitate the removal of the shaped metallurgical product body 16, and then the stripping block 12 is reset under the action of the second spring 14.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shaping tool for deforming the inner cavity of a powder metallurgy product, comprising a lower die base (1), a metallurgical product body (16) and a punch sleeve (6), wherein a punch (7) is provided at the bottom end of the punch sleeve (6), characterized in that: The top of the lower die base (1) is provided with a slide groove (2), and the bottom inner wall of the slide groove (2) is fixedly connected to two limit pins (3), and a first slider (4) and a second slider (5) are slidably connected in the slide groove (2), and the first slider (4) and the second slider (5) are located between the two limit pins (3). One end of the first slider (4) and one end of the second slider (5) are fixedly connected to a shaping head (8), and the shaping head (8) is located in the metallurgical product body (16), and the top of the lower die base (1) is fixedly connected to a product fixing plate (10), and one side of the product fixing plate (10) is fixedly connected to two fixed blocks (11), and the metallurgical product body (16) is located between the two fixed blocks (11), and the top of the lower die base (1) is slidably plugged with a material stripping block (12), and the material stripping block (12) is located below the product fixing plate (10), and one end of the material stripping block (12) is fixedly connected to two protrusions (15).

2. The shaping tool for inner cavity deformation of powder metallurgy products according to claim 1, characterized in that: One side of each of the first slider (4) and the second slider (5) is fixedly connected to a first spring (9), and the other end of the first spring (9) is in contact with the limiting latch (3).

3. The shaping tool for inner cavity deformation of powder metallurgy products according to claim 1, characterized in that: A guide groove (13) is provided on the top of the stripping block (12), an inserting block (17) is slidably connected in the guide groove (13), and the inserting block (17) is fixedly plugged into the product fixing plate (10).

4. The shaping tool for inner cavity deformation of powder metallurgy products according to claim 3, characterized in that: One side of the insert block (17) is fixedly connected to a second spring (14), and the other end of the second spring (14) is fixedly connected to an inner wall of one end of the guide groove (13).

5. The shaping tool for inner cavity deformation of powder metallurgy products according to claim 1, characterized in that: Two mounting holes (18) are provided on the top of the product fixing plate (10).

6. The shaping tool for inner cavity deformation of powder metallurgy products according to claim 1, characterized in that: The sum of 3 / 4 head dimensions of the first slider (4) and the second slider (5) is less than or equal to the product inner cavity value -0.1 mm.

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