Fabricated structure hard alloy bar pressing die

Abstract

The utility model relates to the technical field of bar pressing dies, and discloses an assembly type structure hard alloy bar pressing die which comprises a base, a female die, a pressing plate, a pressing block and two heat dissipation grooves, a bar groove is formed in the upper end face of the pressing block, a bottom groove is formed in the lower end face of the base, and an extrusion groove is formed in the position, close to the middle, of the upper end face of the female die. And heat dissipation boxes are arranged at the positions, close to the lower sides, of the end faces of the two sides of the pressing plate correspondingly, fans are fixedly arranged on the inner walls of the two heat dissipation grooves correspondingly, and embedded plates are fixedly arranged at the positions, close to the opposite sides, of the inner walls of the two heat dissipation grooves correspondingly. According to the utility model, the working part of the die is made of hard alloy, the lower part of the die is quenched by using die steel, and then the two parts are connected in a screw manner, so that the steel part of the structure can keep hardness and strength in a quenching state, the die basically has no stress, can keep form and location tolerance and precision for a long time, and is long in service life and low in cost; the hard alloy working part can be directly replaced after being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of bar pressing dies, in particular to an assembled structure cemented carbide bar pressing die. Background Art

[0002] A bar pressing die is a processing tool for manufacturing metal bars, usually a device for pressing metal materials into required shapes and sizes in cold and hot states. Such a die is usually made of high-strength metal materials to be able to withstand high-pressure and high-temperature working environments. The bar pressing die changes the shape of the metal bar by applying high pressure and high temperature and presses it into the required cross-sectional shape.

[0003] For the pressing dies of existing automatic press products in the powder metallurgy industry (not limited to the cemented carbide industry), generally, integral die steel is used for quenching and processing. Such a die has low hardness and poor wear resistance, and it is difficult to demold when making bars or other products with complex structures. Another type is to weld cemented carbide after quenching the die steel, but after welding, the steel parts will undergo annealing, and stress will also be generated in the cemented carbide part, which is prone to chipping, cracking, short service life, and high cost.

[0004] Therefore, the technical personnel in this field provide an assembled structure cemented carbide bar pressing die to solve the problems raised in the above background art. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a kind of assembled structure cemented carbide bar pressing die is proposed. The working part of the die adopts cemented carbide, and the lower part is processed by quenching die steel, and then the two parts are connected by a screw way. The steel part of this structure can maintain the hardness and strength in the quenched state, the die basically has no stress, can maintain the form and position tolerance and precision for a long time, has a long service life, low cost, and the damaged cemented carbide working part can be directly replaced.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An assembled structure cemented carbide bar pressing die, including a base, a female die, a pressing plate, a pressing block and two heat dissipation grooves. A bar groove is opened on the upper end surface of the pressing block, a bottom groove is opened on the lower end surface of the base, and an extrusion groove is opened at a position close to the middle on the upper end surface of the female die;

[0007] Radiating boxes are arranged on the lower sides of both end faces of the pressing plate. Fans are fixedly arranged on the inner walls of the two heat dissipation grooves. Embedding plates are fixedly arranged at positions close to the opposite sides on the inner walls of the two heat dissipation grooves. Air holes are opened on the end faces of the two embedding plates, and transmission holes are opened at positions close to the middle on the upper end faces of the two embedding plates;

[0008] Through the above technical solution, the base, the pressing plate and the pressing block of the mold are manufactured separately, and the three parts are connected by screws. The advantage of this structure is that the steel part can maintain the hardness and strength in the quenched state, the mold basically has no stress, can maintain the geometric tolerance and precision for a long time, has a long service life, low cost, and the working part of the cemented carbide can be directly replaced if damaged. Moreover, a heat dissipation mechanism is arranged inside the base of the mold. Through the blowing of the fan, air is introduced into the heat dissipation groove. The embedded plate inside the heat dissipation groove is connected to the heat dissipation box that fits the pressing plate, so that the heat on the heat dissipation box will be transmitted to the embedded plate. The fan blows on the embedded plate, effectively carrying away the heat, and the air can enter the heat dissipation box through the transmission holes, accelerating the heat loss and making the heat dissipation effect of the mold better.

[0009] Further, the pressing block is fixedly arranged on the upper end surface of the pressing plate through four first connecting rods, and the pressing plate is fixedly arranged on the upper end surface of the base through three second connecting rods;

[0010] Through the above technical solution, the pressing block of the mold is fixedly connected through the first connecting rod, and the pressing plate is fixedly connected through the second connecting rod. The separate design facilitates subsequent replacement.

[0011] Further, mounting holes are respectively formed at both sides of the upper end surface of the female mold;

[0012] Through the above technical solution, the upper mechanism of the female mold is installed through the mounting holes on the female mold.

[0013] Further, two heat dissipation grooves are respectively formed on the inner walls of both sides of the base, and two connecting grooves are arranged between the two heat dissipation grooves;

[0014] Through the above technical solution, the heat dissipation of the mold is assisted by the heat dissipation grooves formed on the base, and the two heat dissipation grooves can be communicated through the connecting grooves to allow heat to escape.

[0015] Further, main air grooves are respectively formed at the upper side positions of the inner walls on the opposite sides of the two heat dissipation grooves, and auxiliary air grooves are respectively formed at the lower side positions of the inner walls on the opposite sides of the two heat dissipation grooves;

[0016] Through the above technical solution, air enters the heat dissipation groove through the main air groove and the auxiliary air groove on one side, and finally discharges through the main air groove and the auxiliary air groove on the other side, accelerating the air flow rate.

[0017] Further, a plurality of partition plates are fixedly arranged on the inner walls of the two heat dissipation boxes, and a plurality of connecting holes are respectively formed at the lower end surfaces of the plurality of partition plates;

[0018] Through the above technical solution, the heat dissipation area of the heat dissipation box is increased by the partition plates inside the heat dissipation box, and air can enter each chamber through the connecting holes, accelerating the heat dissipation effect.

[0019] Furthermore, the two embedding plates are respectively embedded and arranged on the lower end surfaces of the two heat dissipation boxes;

[0020] Through the above technical solution, the embedding plate is connected to the heat dissipation box, making the heat dissipation effect of the heat dissipation box better.

[0021] The utility model has the following beneficial effects:

[0022] 1. A pressing die for cemented carbide bars with an assembled structure proposed by the utility model. The base, pressing plate and pressing block of the die are designed separately, and the base, pressing plate and pressing block are all connected by screws. The steel parts of this structure can maintain the hardness and strength in the quenched state. The die basically has no stress, can maintain the form and position tolerance and accuracy for a long time, has a long service life, low cost, and the working part of the cemented carbide can be directly replaced when damaged.

[0023] 2. A pressing die for cemented carbide bars with an assembled structure proposed by the utility model. A heat dissipation groove is arranged inside the base of the die, and a fan is arranged inside the heat dissipation groove. The fan blows to one side, and the blown wind blows through the embedding plate. The embedding plate is connected to the heat dissipation box that fits the pressing plate. The heat on the heat dissipation box is transmitted to the embedding plate and blown away by the wind. Moreover, transmission holes are arranged on the embedding plate, and the wind enters the inside of the heat dissipation box through the transmission holes, effectively enhancing the heat dissipation effect. Description of the Drawings

[0024] Figure 1 is the front sectional view of the utility model;

[0025] Figure 2 is the side sectional view of the utility model;

[0026] Figure 3 is the top view of the utility model;

[0027] Figure 4 is of the utility model Figure 1 magnified schematic view of part A;

[0028] Figure 5 is the top view of the female die of the utility model;

[0029] Figure 6 is the front sectional view of the female die of the utility model.

[0030] Legend Explanation:

[0031] 1. Compression block; 2. Rod groove; 3. Pressing plate; 4. First connecting rod; 5. Base; 6. Second connecting rod; 7. Bottom groove; 8. Mounting hole; 9. Extrusion groove; 10. Female die; 11. Main air groove; 12. Fan; 13. Embedded plate; 14. Connecting groove; 15. Air hole; 16. Auxiliary air groove; 17. Heat dissipation box; 18. Heat dissipation groove; 19. Partition board; 20. Connecting hole; 21. Transmission hole. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Refer to Figures 1-6 , an embodiment provided by the present invention: an assembled structure cemented carbide bar pressing die, including a base 5, a female die 10, a pressing plate 3, a compression block 1 and two heat dissipation grooves 18. A rod groove 2 is opened on the upper end surface of the compression block 1, a bottom groove 7 is opened on the lower end surface of the base 5, and an extrusion groove 9 is opened at a position close to the middle on the upper end surface of the female die 10;

[0034] The base 5, the pressing plate 3 and the compression block 1 of this die are manufactured separately. The working part is made of cemented carbide, and the lower part is processed by quenching die steel. The three parts are connected by screws. The advantage of this structure is that the steel part can maintain the hardness and strength in the quenched state, the die basically has no stress, can maintain the shape and position tolerance and accuracy for a long time, has a long service life, low cost, and the cemented carbide working part can be directly replaced when damaged.

[0035] Heat dissipation boxes 17 are arranged on the lower side positions of both end faces of the pressing plate 3. Fans 12 are fixedly arranged on the inner walls of the two heat dissipation grooves 18. Embedded plates 13 are fixedly arranged on the inner walls of the two heat dissipation grooves 18 at positions close to the opposite sides. Air holes 15 are opened on the end faces of the two embedded plates 13, and transmission holes 21 are opened at positions close to the middle on the upper end faces of the two embedded plates 13;

[0036] A heat dissipation mechanism is arranged inside the base 5 of this die. Through the blowing of the fan 12, air enters the inside of the heat dissipation groove 18. The embedded plate 13 inside the heat dissipation groove 18 is connected to the heat dissipation box 17 that fits the pressing plate 3, so that the heat on the heat dissipation box 17 will be transmitted to the embedded plate 13. The fan 12 blows the embedded plate 13, effectively carrying away the heat, and the air can enter the heat dissipation box 17 through the transmission hole 21, accelerating the heat loss, so that the heat dissipation effect of the die is better.

[0037] The briquetting block 1 is fixedly arranged on the upper end surface of the pressing plate 3 through four first connecting rods 4. The pressing plate 3 is fixedly arranged on the upper end surface of the base 5 through three second connecting rods 6. Mounting holes 8 are provided on both sides of the upper end surface of the female die 10.

[0038] The briquetting block 1 of this mold is fixedly connected through the first connecting rod 4, while the pressing plate 3 is fixedly connected through the second connecting rod 6. They are separately designed for subsequent replacement. The upper mechanism of the female die 10 is installed through the mounting holes 8 on the female die 10.

[0039] Two heat dissipation grooves 18 are respectively opened on the inner walls of both sides of the base 5. Two connecting grooves 14 are arranged between the two heat dissipation grooves 18. Main air grooves 11 are respectively opened at the upper side positions of the inner walls on the opposite sides of the two heat dissipation grooves 18. Auxiliary air grooves 16 are respectively opened at the lower side positions of the inner walls on the opposite sides of the two heat dissipation grooves 18. A plurality of partition plates 19 are fixedly arranged on the inner walls of the two heat dissipation boxes 17. A plurality of connecting holes 20 are opened on the lower end surfaces of the plurality of partition plates 19. Two embedding plates 13 are respectively embedded in the lower end surfaces of the two heat dissipation boxes 17.

[0040] The heat dissipation of the mold is assisted by the heat dissipation grooves 18 opened on the base 5. Moreover, the two heat dissipation grooves 18 can be connected through the connecting grooves 14 to allow heat to dissipate. Air enters the heat dissipation grooves 18 through the main air grooves 11 and the auxiliary air grooves 16 on one side and is finally discharged through the main air grooves 11 and the auxiliary air grooves 16 on the other side to accelerate the air flow rate. The heat dissipation area of the heat dissipation box 17 is increased by the partition plates 19 inside the heat dissipation box 17. Moreover, air can enter each chamber through the connecting holes 20 to accelerate heat dissipation. The embedding plate 13 is connected to the heat dissipation box 17, making the heat dissipation effect of the heat dissipation box 17 better.

[0041] Working principle: Place the briquetting block 1 above the pressing plate 3 and then fix it through the first connecting rod 4. Then place the pressing plate 3 on the base 5 and fix it through the second connecting rod 6. Press the briquetting block 1 into the extrusion groove 9 of the female die 10. During operation, the fan 12 inside the heat dissipation groove 18 starts to rotate, taking in air from the main air groove 11 and the auxiliary air layer groove on one side, blowing towards the embedding plate 13, passing through the ventilation holes 15 to reach the connecting groove 14 and entering the other heat dissipation groove 18, and finally being blown out by the fan 12 towards the main air groove 11 and the auxiliary air groove 16 on the other side. When the air reaches the air holes 15 on the embedding plate 13, it will enter the inside of the heat dissipation box 17 through the transmission holes 21 and reach each chamber through the connecting holes 20 on the partition plates 19 to enhance the heat dissipation effect of the heat dissipation box 17.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An assembled structure cemented carbide rod pressing die, comprising a base (5), a die (10), a pressing plate (3), a pressing block (1) and two heat dissipation grooves (18), characterized in that: The upper end surface of the pressing block (1) is provided with a rod groove (2), the lower end surface of the base (5) is provided with a bottom groove (7), and the upper end surface of the die (10) is provided with an extrusion groove (9) at a middle position; Heat dissipation boxes (17) are provided at the lower side of the end surfaces of both sides of the pressure plate (3), fans (12) are fixedly provided on the inner walls of the two heat dissipation grooves (18), embedded plates (13) are fixedly provided on the inner walls of the two heat dissipation grooves (18) at opposite sides, air holes (15) are provided on the end surfaces of the two embedded plates (13), and transmission holes (21) are provided at the middle of the upper end surfaces of the two embedded plates (13).

2. The assembled structural cemented carbide bar pressing die according to claim 1, characterized in that: The pressing block (1) is fixedly arranged on the upper end surface of the pressing plate (3) via four first connecting rods (4), and the pressing plate (3) is fixedly arranged on the upper end surface of the base (5) via three second connecting rods (6).

3. The assembled structural cemented carbide bar pressing die according to claim 1, characterized in that: The upper end surface of the die (10) is provided with mounting holes (8) on both sides.

4. The assembled structural cemented carbide bar pressing die according to claim 1, characterized in that: The two heat dissipation grooves (18) are respectively provided on the inner walls at both sides of the base (5), and two connection grooves (14) are provided between the two heat dissipation grooves (18).

5. The assembled structural cemented carbide bar pressing die according to claim 1, characterized in that: A main air slot (11) is provided on the upper side of the inner wall on the opposite side of the two heat dissipation slots (18), and a secondary air slot (16) is provided on the lower side of the inner wall on the opposite side of the two heat dissipation slots (18).

6. The assembled structural cemented carbide rod pressing die according to claim 1, characterized in that: A plurality of partitions (19) are fixedly disposed on the inner walls of the two heat dissipation boxes (17), and a plurality of connection holes (20) are formed on the lower end surfaces of the plurality of partitions (19).

7. The assembled structural cemented carbide bar pressing die according to claim 1, characterized in that: The two embedded plates (13) are respectively embedded in the lower end surfaces of the two heat dissipation boxes (17).

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