Cold pressing device for hard alloy material production

Abstract

The invention relates to a cold pressing device for producing a hard alloy material, belongs to the field of production of alloy materials, and aims to solve the problems that feeding is insufficient, a hard alloy blank subjected to cold pressing possibly has the problems of uneven density, insufficient strength and the like, and the performance and the service life of a product are seriously influenced. The placing groove is fixedly connected to the interior of the base, the first hydraulic machine is arranged below the base, the lower die is fixedly connected to the upper end of the first hydraulic machine, the first supporting plate is fixedly connected to the outer side of the base, and the second hydraulic machine is fixedly connected to the lower portion of the inner side of the first supporting plate. The reciprocating mechanism can swing the swing mechanism when reciprocating, the lower die vibrates, the internal gap is reduced, compared with the prior art, materials on the outer side can enter the inner side of the lower die, and therefore the purpose that the feeding amount is more accurate is achieved.

Description

Technical Field

[0001] The invention relates to the field of alloy material production, and in particular to a cold pressing device for producing hard alloy materials. Background Art

[0002] The cold pressing device mainly shapes the cemented carbide powder in the mold by applying high pressure. It uses a hydraulic system or a mechanical pressure system to generate strong pressure to compact the loose cemented carbide powder into a blank with a specific shape and size.

[0003] The patent with publication number CN116809931A discloses a powder cold pressing device and method for cemented carbide processing, which solves the problem that metal powder is easily spilled on the outer surface of the operating table and the lower mold during the process of adding metal powder into the cavity of the lower mold, and the problem that the accuracy of adding metal powder is high. In the production process of cemented carbide materials, the cold pressing device plays a vital role. In order to improve production efficiency, the cemented carbide powder is usually placed on the inner side of the placement groove of the cold pressing device so as to realize automatic feeding during the downward movement of the lower mold. This design concept improves the continuity and speed of production to a certain extent, reduces the links of manual intervention, and reduces labor intensity. However, in the actual feeding process, it faces a series of challenges. Due to the characteristics of the powder itself and the limitations of the feeding method, gaps often occur between powders. Cemented carbide powder is usually fine in particles, and there may be a certain amount of static electricity or adsorption on the surface, which makes the distribution of powder in the placement groove uneven. When the automatic feeding starts, the downward movement of the lower mold will drive the flow of powder, but the gaps between the powder particles will make it difficult to accurately control the feeding amount. These gaps may make the actual feeding amount less than the expected value. During the cold pressing process, accurate feed amount is one of the key factors to ensure product quality. If the feed is insufficient, the cemented carbide blank after cold pressing may have problems such as uneven density and insufficient strength, which will seriously affect the performance and service life of the product.

[0004] To solve the above problems, a cold pressing device for producing cemented carbide material is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a cold pressing device for the production of cemented carbide materials, which solves the problem that insufficient feed may cause uneven density and insufficient strength of the cemented carbide blanks after cold pressing, seriously affecting the performance and service life of the product.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A cold pressing device for producing cemented carbide materials, comprising a base, a placement groove fixedly connected to the inside of the base, a first hydraulic press arranged below the base, a lower mold fixedly connected to the upper end of the first hydraulic press, a first support plate fixedly connected to the outside of the base, a second hydraulic press fixedly connected to the lower inside of the first support plate, an upper mold fixedly connected to the lower end of the second hydraulic press, a reciprocating mechanism arranged at the upper end of the base, and a swing mechanism arranged on the side of the reciprocating mechanism close to the upper mold;

[0007] The reciprocating mechanism includes a sliding component and a pushing component, wherein the sliding component is arranged at the upper end of the pushing component;

[0008] The sliding assembly includes a second support plate fixedly connected to the upper surface of the base, a first guide groove is arranged inside the second support plate, a first guide rod is arranged on the inner side of the first guide groove, a third connecting plate is vertically slidably connected to one side of the second support plate, a first hole is arranged inside the third connecting plate, a first push plate is arranged on the inner side of the first hole, and the first push plate is connected to the first guide rod in a fixed manner.

[0009] Preferably, the central axis of the second support plate is perpendicular to the upper surface of the base, and the central axis of the first hole is perpendicular to the central axis of the second support plate.

[0010] Preferably, the appearance structure of the first guide groove is wavy, and the first guide groove and the first guide rod are matched in a clearance fit.

[0011] Preferably, the outer side surface of the first pushing plate is in contact with the inner side surface of the first hole, and the appearance structure of the first pushing plate is a rectangular parallelepiped.

[0012] The cam is secured to the upper edge of the second support frame, and the cam is secured on the lower edge of the second support frame, and the cam is secured on the lower edge of the second support frame.

[0013] Preferably, the width of the upper end of the first slide groove is smaller than the width of the lower end of the first slide groove, and the outer side surface of the first sliding block fits with the inner side surface of the first slide groove.

[0014] Preferably, the width of the upper end of the sliding hole is greater than the width of the lower end of the sliding hole, and the inner side surface of the sliding hole is in contact with the outer side surface of the second sliding block.

[0015] Preferably, the appearance and structural shape of the second guide groove is wavy, and the cooperation mode between the second guide groove and the second guide rod is clearance cooperation.

[0016] Preferably, a third hole is connected below the first hole, and the swing mechanism includes a pushing rod arranged on the inner side of the third hole, the pushing rod is connected to the first pushing plate in a fixed manner, the lower end of the pushing rod is fixedly connected to a pressure plate, the outer side of the pushing rod is fixedly connected to a fixing plate, a third guide groove is arranged inside the fixing plate, a point a is arranged on the outer side of one end of the third guide groove, a point b is arranged on the inner side of one end of the third guide groove, a point c is arranged on the outer side of the other end of the third guide groove, a point d is arranged on the inner side of the other end of the third guide groove, a third guide rod is arranged on the inner side of the third guide groove, the lower end of the third guide rod is fixedly connected to the third pushing plate, and the third push plate is connected to the first connecting plate in a fixed manner.

[0017] Preferably, point a of the third guide groove is closer to the push rod than point b of the third guide groove, and point c of the third guide groove is farther away from the push rod than point d of the third guide groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a cold pressing device for producing cemented carbide materials. A reciprocating mechanism and a swinging mechanism are provided so that the reciprocating mechanism swings the swinging mechanism when performing reciprocating motion, causing the lower mold to vibrate and the internal gap to be reduced. Compared with the prior art, the material on the outside can enter the inside of the lower mold, thereby achieving a more accurate feeding amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 It is a left-side structural schematic diagram of the first guide groove of the present invention;

[0022] Figure 3 It is a bottom view structural schematic diagram of the third guide groove of the present invention;

[0023] Figure 4 It is a schematic diagram of the top view of the second guide groove of the present invention;

[0024] Figure 5It is a schematic diagram of the appearance structure of the upper mold of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle;

[0026] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at point B in the middle.

[0027] In the figure: 1, base; 2, placement groove; 3, first hydraulic press; 4, lower mold; 5, first support plate; 6, second hydraulic press; 7, upper mold; 8, reciprocating mechanism; 9, swing mechanism; 81, sliding assembly; 82, pushing assembly; 8101, second support plate; 8102, first guide groove; 8103, first guide rod; 8104, third connecting plate; 8105, first hole; 8106, first pushing plate; 10, fourth hole; 8201, first paddle; 8202, The first slide groove; 8203, the first slider; 8204, the first push plate; 8205, the second push plate; 8206, the first connecting plate; 8207, the second connecting plate; 8208, the slide hole; 8209, the second slider; 8210, the second guide groove; 8211, the second guide rod; 8212, the second paddle; 11, the third hole; 901, the push rod; 902, the pressure plate; 903, the fixing plate; 904, the third guide groove; 905, the third guide rod; 906, the third push plate. DETAILED DESCRIPTION

[0028] 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 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 creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7 The present invention provides a technical solution: a cold pressing device for producing cemented carbide materials, comprising a base 1, a placement groove 2 fixedly connected to the inside of the base 1, a first hydraulic press 3 arranged below the base 1, a lower mold 4 fixedly connected to the upper end of the first hydraulic press 3, a first support plate 5 fixedly connected to the outside of the base 1, a second hydraulic press 6 fixedly connected to the lower inside of the first support plate 5, an upper mold 7 fixedly connected to the lower end of the second hydraulic press 6, a reciprocating mechanism 8 is arranged at the upper end of the base 1, and a swing mechanism 9 is arranged on the side of the reciprocating mechanism 8 close to the upper mold 7;

[0030] The reciprocating mechanism 8 includes a sliding component 81 and a pushing component 82, wherein the sliding component 81 is arranged at the upper end of the pushing component 82;

[0031] The sliding assembly 81 includes a second support plate 8101 fixedly connected to the upper surface of the base 1, a first guide groove 8102 is arranged inside the second support plate 8101, a first guide rod 8103 is arranged inside the first guide groove 8102, the appearance structure of the first guide groove 8102 is wavy, and the first guide groove 8102 and the first guide rod 8103 are matched in a clearance fit, so that the first guide rod 8103 moves forward and backward when the first guide groove 8102 moves, and a third connecting plate 8104 is vertically slidably connected to one side of the second support plate 8101, and a first hole 8105 is arranged inside the third connecting plate 8104, and the inner side of the first hole 8105 A first push plate 8106 is provided, and the connection between the first push plate 8106 and the first guide rod 8103 is a fixed connection. The central axis of the second support plate 8101 is perpendicular to the upper surface of the base 1, and the central axis of the first hole 8105 is perpendicular to the central axis of the second support plate 8101, so that when the first push plate 8106 moves up and down, the second support plate 8101 will not block the first push plate 8106, the outer side surface of the first push plate 8106 is in contact with the inner side surface of the first hole 8105, and the appearance structure of the first push plate 8106 is a rectangular parallelepiped, so that the first push plate 8106 will not rotate when it moves on the inner side of the first hole 8105.

[0032] The lower surface of the placement groove 2 is connected with a fourth hole 10, the lower mold 4 is nested in the inner side of the fourth hole 10, the pushing component 82 includes a first paddle 8201 arranged on the upper surface of the lower mold 4, a first slide groove 8202 is arranged inside the upper part of the lower mold 4, a first slider 8203 is arranged inside the first slide groove 8202, the upper end width of the first slide groove 8202 is smaller than the lower end width of the first slide groove 8202, and the outer side surface of the first slider 8203 is in contact with the inner side surface of the first slide groove 8202, so that the first slider 8203 is in the first slide groove 82 02 will not move out of the inner side of the first slide groove 8202, the first slide block 8203 is fixedly connected with the first push plate 8204 on the top, the first push plate 8204 is slidably connected with the second push plate 8205 on the top, the first connecting plate 8206 is fixedly connected with the top of the second push plate 8205, the first connecting plate 8206 is provided with a second connecting plate 8207 on the top, the upper end of the second connecting plate 8207 is nested in the inner side of the first hole 8105, the lower end of the second connecting plate 8207 is provided with a sliding hole 8208, the sliding hole 8208 is provided inside, and the sliding hole 8208 is provided inside. The width of the upper end of the sliding hole 8208 is greater than the width of the lower end of the sliding hole 8208, and the inner side surface of the sliding hole 8208 is fitted with the outer side surface of the second sliding block 8209, so that the second sliding block 8209 will not move out of the inner side of the sliding hole 8208 when moving inside the sliding hole 8208. The inner side of the sliding hole 8208 is provided with a second sliding block 8209, and the second sliding block 8209 is connected to the first connecting plate 8206 in a fixed manner. The upper surface of the first hole 8105 is connected with a second guide groove 8210, and the inner side of the second guide groove 8210 is provided with a second guide rod 8211, the connection method between the second guide rod 8211 and the second connecting plate 8207 is a fixed connection, the appearance and structural shape of the second guide groove 8210 is wavy, and the cooperation method between the second guide groove 8210 and the second guide rod 8211 is a clearance cooperation, so that the second guide rod 8211 can move left and right when moving on the inner side of the second guide groove 8210, the connection method between the first push plate 8106 and the second connecting plate 8207 is a lateral sliding connection, and the second paddles 8212 are fixedly connected to the lower sides of the second push plate 8205.

[0033] The first hole 8105 is connected to the third hole 11 below, and the swing mechanism 9 includes a pushing rod 901 arranged on the inner side of the third hole 11, and the pushing rod 901 is connected to the first pushing plate 8106 in a fixed connection manner. The lower end of the pushing rod 901 is fixedly connected to a pressing plate 902, and the outer side of the pushing rod 901 is fixedly connected to a fixing plate 903, and the interior of the fixing plate 903 is provided with a third guide groove 904, and the outer side of one end of the third guide groove 904 is provided with a point a, and the inner side of one end of the third guide groove 904 is provided with a point b, and the outer side of the other end of the third guide groove 904 is provided with a point c, and the inner side of the other end of the third guide groove 904 is provided with a point d, and the inner side of the third guide groove 904 is provided with a third guide rod 905. The lower end of the guide rod 905 is fixedly connected to a third push plate 906, and the third push plate 906 is fixedly connected to the first connecting plate 8206. Point a of the third guide groove 904 is closer to the push rod 901 than point b of the third guide groove 904, and point c of the third guide groove 904 is farther away from the push rod 901 than point d of the third guide groove 904, so that the third guide rod 905 moves to point a of the third guide groove 904 and moves back to the inside of a side of the third guide groove 904 that is closer to the push rod 901, and the third guide rod 905 moves to point c of the third guide groove 904 and moves back to the inside of a side of the third guide groove 904 that is farther away from the push rod 901.

[0034] When cold pressing is required, the first hydraulic press 3 is started to drive the lower mold 4 to move downward to the lower inner side of the placement groove 2. The powder inside the placement groove 2 enters the inner side of the lower mold 4 under gravity. After the lower mold 4 is filled with powder, the first hydraulic press 3 is started to drive the lower mold 4 to move upward, so that the first slider 8203 arranged on the inner side of the first slide groove 8202 moves upward, and the first push plate 8204 and the second push plate 8205 move upward, driving the first connecting plate 8206, the second connecting plate 8207 and the second slider 8209 to move upward. Since the upper end of the second connecting plate 8207 is arranged on the inner side of the third connecting plate 8104, the third connecting plate 8104 and the first push plate 8106 move upward. Since the first push plate 8106 and the first guide rod 81 03 is connected in a fixed manner. Since the appearance structure of the first guide groove 8102 is wavy, and the first guide groove 8102 and the first guide rod 8103 are matched in a clearance manner, the first push plate 8106 and the first guide rod 8103 swing back and forth. Since the first push plate 8106 and the second connecting plate 8207 are connected in a transverse sliding manner, the second connecting plate 8207 moves back and forth and swings left and right, driving the sliding hole 8208 and the second sliding block 8209 to move left and right, so that the second paddle 8212 moves the first paddle 8201 left and right and forward and backward, so that the inner side of the lower mold 4 vibrates back and forth and left and right, so that the gap inside the lower mold 4 can be reduced, and the material on the outside can enter the inner side of the lower mold 4, so that the feeding amount is more accurate.

[0035] When the first connecting plate 8206 moves left and right, it drives the third push plate 906 to move left and right, and drives the third push plate 906 to move left and right, so that the third guide rod 905 moves left and right. Because point a of the third guide groove 904 is closer to the push rod 901 than point b of the third guide groove 904, and point c of the third guide groove 904 is farther away from the push rod 901 than point d of the third guide groove 904, the third guide rod 905 moves to point a of the third guide groove 904 and moves back to the inside of a side of the third guide groove 904 closer to the push rod 901. The third guide rod 905 moves to point c of the third guide groove 904 and moves back to the inside of a side of the third guide groove 904 farther away from the push rod 901, so that the third guide rod 905 and the third push plate 906 move back and forth, and clamp the powder together with the pressing plate 902 to crush it, making it easier to enter the inner side of the lower mold 4, so that the feeding amount is more accurate.

[0036] As the third guide rod 905 and the third push plate 906 move forward and backward, and clamp the powder together with the pressure plate 902 to crush it, it immediately crushes the powder following the front and back vibration and left and right vibration of the second paddle 8212 and feeds the crushed material into the inner side of the lower mold 4, making the feeding amount more accurate.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold pressing device for producing cemented carbide materials, comprising a base (1), a placement groove (2) fixedly connected to the inside of the base (1), a first hydraulic press (3) arranged below the base (1), a lower mold (4) fixedly connected to the upper end of the first hydraulic press (3), a first support plate (5) fixedly connected to the outside of the base (1), a second hydraulic press (6) fixedly connected to the inside and below of the first support plate (5), and an upper mold (7) fixedly connected to the lower end of the second hydraulic press (6), characterized in that: A reciprocating mechanism (8) is disposed at the upper end of the base (1), and a swinging mechanism (9) is disposed on a side of the reciprocating mechanism (8) close to the upper mold (7); The reciprocating mechanism (8) comprises a sliding component (81) and a pushing component (82), wherein the sliding component (81) is arranged at the upper end of the pushing component (82); The sliding assembly (81) includes a second support plate (8101) fixedly connected to the upper surface of the base (1), a first guide groove (8102) is arranged inside the second support plate (8101), a first guide rod (8103) is arranged on the inner side of the first guide groove (8102), a third connecting plate (8104) is vertically slidably connected to one side of the second support plate (8101), a first hole (8105) is arranged inside the third connecting plate (8104), a first push plate (8106) is arranged on the inner side of the first hole (8105), and the first push plate (8106) is connected to the first guide rod (8103) in a fixed manner.

2. A cold pressing device for producing cemented carbide materials according to claim 1, characterized in that: The central axis of the second support plate (8101) is perpendicular to the upper surface of the base (1), and the central axis of the first hole (8105) is perpendicular to the central axis of the second support plate (8101).

3. The cold pressing device for producing cemented carbide materials according to claim 1, characterized in that: The appearance structure of the first guide groove (8102) is wavy, and the first guide groove (8102) and the first guide rod (8103) are matched in a clearance fit.

4. The cold pressing device for producing cemented carbide materials according to claim 1, characterized in that: The outer side surface of the first push plate (8106) is in contact with the inner side surface of the first hole (8105), and the appearance structure of the first push plate (8106) is a rectangular parallelepiped.

5. The cold pressing device for producing cemented carbide materials according to claim 1, characterized in that: The lower surface of the placement groove (2) is connected to a fourth hole (10), the lower mold (4) is nested in the inner side of the fourth hole (10), the pushing component (82) includes a first paddle (8201) arranged on the upper surface of the lower mold (4), a first slide groove (8202) is arranged on the upper inner side of the lower mold (4), a first slider (8203) is arranged on the inner side of the first slide groove (8202), a first push plate (8204) is fixedly connected to the upper side of the first slider (8203), a second push plate (8205) is slidably connected to the upper end of the first push plate (8204), a first connecting plate (8206) is fixedly connected to the upper end of the second push plate (8205), a second connecting plate (8207) is arranged on the upper side of the first connecting plate (8206), and the second connecting plate (8207) The upper end of the second connecting plate (8207) is nested in the inner side of the first hole (8105), a sliding hole (8208) is arranged inside the lower end of the second connecting plate (8207), a second sliding block (8209) is arranged inside the sliding hole (8208), the second sliding block (8209) is connected to the first connecting plate (8206) in a fixed connection, the upper surface of the first hole (8105) is connected to a second guide groove (8210), the inner side of the second guide groove (8210) is arranged with a second guide rod (8211), the second guide rod (8211) is connected to the second connecting plate (8207) in a fixed connection, the first push plate (8106) is connected to the second connecting plate (8207) in a transverse sliding connection, and second paddles (8212) are fixedly connected to the lower sides of the second push plate (8205).

6. A cold pressing device for producing cemented carbide materials according to claim 5, characterized in that: The width of the upper end of the first slide groove (8202) is smaller than the width of the lower end of the first slide groove (8202), and the outer side surface of the first sliding block (8203) fits with the inner side surface of the first slide groove (8202).

7. The cold pressing device for producing cemented carbide materials according to claim 5, characterized in that: The width of the upper end of the sliding hole (8208) is greater than the width of the lower end of the sliding hole (8208), and the inner side surface of the sliding hole (8208) is in contact with the outer side surface of the second sliding block (8209).

8. The cold pressing device for producing cemented carbide materials according to claim 5, characterized in that: The appearance and structural shape of the second guide groove (8210) is wave-shaped, and the matching mode between the second guide groove (8210) and the second guide rod (8211) is clearance matching.

9. The cold pressing device for producing cemented carbide materials according to claim 1, characterized in that: The first hole (8105) is connected to a third hole (11) below, and the swing mechanism (9) includes a push rod (901) arranged inside the third hole (11). The push rod (901) is connected to the first push plate (8106) in a fixed manner. The lower end of the push rod (901) is fixedly connected to a pressure plate (902), and the outer side of the push rod (901) is fixedly connected to a fixing plate (903). The fixing plate (903) is provided with a third guide groove (904) inside. A point a is arranged on the outer side of one end of the third guide groove (904), a point b is arranged on the inner side of one end of the third guide groove (904), a point c is arranged on the outer side of the other end of the third guide groove (904), a point d is arranged on the inner side of the other end of the third guide groove (904), a third guide rod (905) is arranged on the inner side of the third guide groove (904), a third push plate (906) is fixedly connected to the lower end of the third guide rod (905), and the third push plate (906) is connected to the first connecting plate (8206) in a fixed manner.

10. A cold pressing device for producing cemented carbide materials according to claim 9, characterized in that: Point a of the third guide groove (904) is closer to the push rod (901) than point b of the third guide groove (904), and point c of the third guide groove (904) is farther away from the push rod (901) than point d of the third guide groove (904).

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