Integrated wire-drawing die box

Abstract

The utility model relates to the technical field of wire drawing machines, in particular to an integrated wire drawing die box which comprises a main body, a metal wire inlet and a metal wire outlet are formed in the two ends of the main body respectively, a cooling cavity is formed in the middle end of the main body, a die sleeve is clamped in the cooling cavity, the cooling cavity is connected with the die sleeve through a water cooling mechanism, a screw plug is installed at the outlet, and the die sleeve and the screw plug are integrally formed. A plurality of groups of mold cores are mounted in the mold sleeve, and two ends of the mold sleeve are hermetically connected with the main body respectively; and the water cooling mechanism comprises a pipe body which is spirally distributed in the die sleeve, the two ends of the pipe body are connected into the cooling water tank, and a water pump is installed at the joint of the pipe body and the cooling water tank. The structure of the wire-drawing die box is simplified, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of wire drawing machine technology, and in particular to an integrated wire drawing die box. Background Technology

[0002] A wire drawing machine is a mechanical device that uses the principle of elastic deformation and plastic deformation generated in the drawing die during the wire drawing process to change the size and physical properties of the wire. It is widely used in the production of various steel wires and welding wires in the metal products industry. The wire drawing die box is a part of the working machinery of the wire drawing machine.

[0003] Chinese patent CN201308918Y discloses a direct water-cooled wire drawing die box, belonging to the technical field of metal product electromechanical equipment. It includes a die box, a screw plug and set screw, a wire drawing die, a sealing gasket, a die-loading cavity, a return water tank, a drain pipe, and an overflow pipe. The die box is located at one end, and the return water tank at the other end. A die-loading cavity is located between the die box and the return water tank, and the wire drawing die and overflow pipe are located within the die-loading cavity. A screw plug and set screw are located between the wire drawing die and the return water tank. Sealing gaskets are located between the die box and the wire drawing die, and between the wire drawing die and the screw plug and set screw. This utility model has a simple structure and good cooling effect; at a drawing speed of 10 m / s, the measured average temperature of the steel wire exiting the die is less than 75℃.

[0004] However, in the existing technology, the screw plug and die sleeve in the wire drawing die box adopt a separate structure. A sealing structure is required between the screw plug and die sleeve and the main body of the wire drawing die box, as well as between the screw plug and die sleeve. Moreover, the entire structure needs to be scrapped when the wire drawing machine is maintained, resulting in high maintenance costs. Utility Model Content

[0005] In order to overcome the problems existing in the prior art, this application provides an integrated wire drawing mold box.

[0006] The integrated wire drawing mold box provided in this application adopts the following technical solution:

[0007] An integrated wire drawing die box includes a main body with wire inlets and outlets at both ends. A cooling chamber is located in the middle of the main body, and a die sleeve is fitted inside the cooling chamber. The cooling chamber is connected to the die sleeve via a water cooling mechanism. A screw plug is installed at the outlet, and the die sleeve and screw plug are integrally formed. Several sets of die cores are installed inside the die sleeve, and both ends of the die sleeve are sealed to the main body. The water cooling mechanism includes spirally distributed tubes inside the die sleeve, with both ends of the tubes connected to a cooling water tank. A water pump is installed at the connection between the tubes and the cooling water tank.

[0008] By adopting the above technical solution, the main body of the wire drawing die box is installed on the wire drawing machine. The cooling chamber between the inlet and outlet of the main body is used to dissipate heat from the metal wire drawn by the die core inside the die sleeve and the wire drawing die box. The cooling chamber is equipped with a water cooling mechanism connected to the die sleeve to cool the die sleeve. A pressure-type strong water cooling method is adopted. The water cooling mechanism uses a water pump to deliver cooling water from the cooling water tank through a spirally distributed tube inside the die sleeve. The cooling water is delivered to the tube at a certain pressure, so that the cooling water can quickly circulate in the water channel, effectively removing the heat generated by the friction between the metal wire and the die core, as well as the large amount of heat generated by the plastic deformation of the metal wire itself. The screw plug installed at the outlet of the wire drawing die box is integrally formed with the die sleeve, which facilitates disassembly and assembly inside the wire drawing die box. The integrally formed structure requires fewer sealing connections, and maintenance only requires replacing the internal die core, which not only improves the overall structural stability but also reduces maintenance costs.

[0009] Preferably, the mold sleeve has a through hole for accommodating the mold core, wherein the through hole includes a first mounting part with the same inner diameter and a second mounting part with an inner diameter that gradually decreases from the inlet to the outlet, and the mold core is installed in both the first mounting part and the second mounting part.

[0010] Preferably, the inner diameter of the first mounting part is greater than the maximum inner diameter of the second mounting part, wherein the length of the first mounting part is the same as the length of the mold core, and the length of the mold core in the second mounting part is less than the length of the second mounting part.

[0011] Preferably, the inner diameter of the plug is larger than the inner diameter of the mold sleeve, and the inner surface of the plug adopts an internal hexagonal structure, and the outer surface of the plug is threadedly connected to the body.

[0012] Preferably, the inner diameter of the mold core in the first mounting part is larger than the inner diameter of the mold core in the second mounting part, and the two are fitted together, wherein there is an arc transition between the metal wire inlet and outlet of the mold core and the end face of the mold core.

[0013] By adopting the above technical solution, the perforation inside the die sleeve is used to install the die core. The first mounting part of the die core installs the first die core, and the second mounting part installs the second die core. The metal wire can be continuously drawn by passing through the die cores in sequence. Through multiple gradual drawing processes, the wire can be refined to the size that meets production requirements more accurately and stably. Moreover, the deformation amount of each drawing pass is relatively small, which allows the metal wire's microstructure to change more uniformly and the internal stress distribution to be more reasonable, thereby improving the overall mechanical properties of the metal wire. The die core in the first mounting part can abut against the end of the second mounting part, which has a smaller inner diameter. The inlet diameter of the second mounting part is larger than the outlet diameter, and the die core can be locked inside it by its matching outer diameter, making it difficult for the die core installed in the die sleeve to move. At the same time, the two die cores fit together, and there is an arc transition at the inlet and outlet, which can ensure that the metal wire is fully drawn in the die sleeve and improve the surface quality of the metal wire. The outer surface of the plug is connected to the body by threads. During installation, an internal hex wrench can be used to rotate the plug by engaging the internal hexagonal structure on the inner side of the plug, improving the convenience of installing the plug and the mold sleeve as a whole.

[0014] Preferably, a first sealing groove is formed on one end face of the mold sleeve near the inlet, and a second sealing groove is formed on the side wall of the end of the mold sleeve away from the first sealing groove, wherein a sealing ring is installed in both the first sealing groove and the second sealing groove.

[0015] Preferably, the portion of the mold sleeve located inside the cooling cavity has a heat dissipation groove, and the outer diameter of the mold sleeve is smaller than the outer diameter of the screw plug.

[0016] Preferably, the connection between the outer surface of the mold sleeve and the screw plug adopts an arc-shaped transition.

[0017] By adopting the above technical solution, the mold sleeve is sealed to one end of the main body through a sealing ring set in the first sealing groove, and a sealing ring is set in the second sealing groove to seal the inner side of the main body. Sealing at two locations achieves a complete seal between the integrated mold sleeve and the screw plug within the main body, simplifying the sealing structure. The heat dissipation grooves on the surface of the mold sleeve in the cooling cavity section assist the water-cooling mechanism in heat dissipation. The outer diameter of the mold sleeve is smaller than that of the screw plug, and the connection point has an arc-shaped transition, facilitating the installation of the integrated mold sleeve and screw plug into the main body.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] The screw plug installed at the outlet of the wire drawing die box in this application is integrally formed with the die sleeve, which facilitates disassembly and assembly inside the wire drawing die box. The integrally formed structure requires fewer sealing connection positions, and only the internal die core needs to be replaced during maintenance. This not only improves the overall structural stability but also reduces maintenance costs.

[0020] This application employs a pressure-type forced water cooling method. The water cooling mechanism uses a water pump to pump the cooling water in the cooling water tank through a spirally distributed tube inside the die sleeve. The cooling water is delivered to the tube at a certain pressure, allowing the cooling water to circulate rapidly within the pipe, effectively dissipating heat and improving the heat dissipation effect during the wire drawing process. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the overall structure of the integrated wire drawing mold box.

[0022] Explanation of reference numerals in the attached drawings: 1. Main body; 11. Cooling chamber; 12. Water cooling mechanism; 121. Pipe body; 122. Cooling water tank; 123. Water pump; 2. Mold sleeve; 21. Perforation; 211. First mounting part; 212. Second mounting part; 22. First sealing groove; 23. Second sealing groove; 24. Sealing ring; 25. Heat dissipation groove; 3. Plug; 4. Mold core. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0024] This application discloses an integrated wire drawing mold box.

[0025] Reference Figure 1An integrated wire drawing die box includes a main body 1, with wire inlets and outlets at both ends of the main body 1. A cooling chamber 11 is provided at the middle end of the main body 1, in which a die sleeve 2 is fitted. The cooling chamber 11 is connected to the die sleeve 2 via a water cooling mechanism 12. A screw plug 3 is installed at the outlet, and the die sleeve 2 and the screw plug 3 are integrally formed. Several sets of die cores 4 are installed in the die sleeve 2, and both ends of the die sleeve 2 are sealed to the main body 1. The water cooling mechanism 12 includes a spirally distributed tube 121 opened in the die sleeve 2, with both ends of the tube 121 connected to a cooling water tank 122. A water pump 123 is installed at the connection between the tube 121 and the cooling water tank 122. The main body 1 of the wire drawing die is installed on the wire drawing machine. A cooling chamber 11 between the inlet and outlet of the main body 1 is used to dissipate heat from the metal wire drawn by the die core 4 within the die sleeve 2 and from the wire drawing die itself. A water-cooling mechanism 12 connected to the die sleeve 2 cools the die sleeve 2 using a pressure-type strong water cooling method. The water-cooling mechanism 12, through a water pump 123, pumps cooling water from the cooling water tank 122 through a spirally distributed pipe 121 within the die sleeve 2, delivering the cooling water at a certain pressure. This allows the cooling water to circulate rapidly within the water channels, effectively removing the heat generated by friction between the metal wire and the die core 4, as well as the significant heat generated by the plastic deformation of the metal wire itself. The screw plug 3 installed at the outlet of the wire drawing die is integrally formed with the die sleeve 2, facilitating disassembly and assembly within the wire drawing die. The integral structure requires fewer sealing connections, and maintenance only requires replacing the internal die core 4, improving the overall structural stability and reducing maintenance costs.

[0026] Reference Figure 1The mold sleeve 2 has a through hole 21 for accommodating the mold core 4. The through hole 21 includes a first mounting portion 211 with the same inner diameter and a second mounting portion 212 with an inner diameter that gradually decreases from the inlet to the outlet. Mold cores 4 are installed in both the first mounting portion 211 and the second mounting portion 212. The inner diameter of the first mounting portion 211 is larger than the maximum inner diameter of the second mounting portion 212. The length of the first mounting portion 211 is the same as the length of the mold core 4, while the length of the mold core 4 in the second mounting portion 212 is shorter than the length of the second mounting portion 212. The inner diameter of the screw plug 3 is larger than the inner diameter of the mold sleeve 2, and the inner surface of the screw plug 3 has an internal hexagonal structure. The outer surface of the screw plug 3 is threaded to the main body 1. The inner diameter of the mold core 4 in the first mounting portion 211 is larger than the inner diameter of the mold core 4 in the second mounting portion 212, and the two are fitted together. An arc-shaped transition is provided between the inlet and outlet of the metal wire of the mold core 4 and the end face of the mold core 4. The perforation 21 within the die sleeve 2 is used to install the die core 4. The first mounting part 211 of the die core 4 is used to install the first die core 4, and the second mounting part 212 is used to install the second die core 4. The metal wire can be continuously drawn by passing through the die core 4 in sequence. Through multiple gradual drawing, the wire can be refined to the size that meets the production requirements more accurately and stably. Moreover, the deformation amount of each drawing pass is relatively small, which allows the structure of the metal wire to change more evenly and the internal stress distribution to be more reasonable, thereby improving the comprehensive mechanical properties of the metal wire. The die core 4 in the first mounting part 211 can abut against the end of the second mounting part 212 with a smaller inner diameter. The inlet diameter of the second mounting part 212 is larger than the outlet diameter, and the die core 4 can be locked inside it by a matching outer diameter, so that the die core 4 installed in the die sleeve 2 is not easy to move. At the same time, the two die cores 4 fit together, and there is an arc transition at the inlet and outlet, which can ensure that the metal wire is fully drawn in the die sleeve 2 and improve the surface quality of the metal wire. The outer surface of the plug 3 is connected to the main body 1 by a thread. During installation, an internal hex wrench can be used to rotate the plug 3 by engaging the internal hexagonal structure on the inner side of the plug 3, which improves the convenience of installing the plug 3 and the mold sleeve 2 as a whole.

[0027] Reference Figure 1A first sealing groove 22 is formed on one end face of the mold sleeve 2 near the inlet, and a second sealing groove 23 is formed on the side wall of the end of the mold sleeve 2 away from the first sealing groove 22. Sealing rings 24 are installed in both the first sealing groove 22 and the second sealing groove 23. A heat dissipation groove 25 is formed on the surface of the mold sleeve 2 located within the cooling chamber 11, and the outer diameter of the mold sleeve 2 is smaller than the outer diameter of the screw plug 3. An arc-shaped transition is used at the connection between the outer surfaces of the mold sleeve 2 and the screw plug 3. The mold sleeve 2 is sealed to one end of the main body 1 through the sealing ring 24 in the first sealing groove 22, and to the inner surface of the main body 1 through the sealing ring 24 in the second sealing groove 23. Sealing at these two locations achieves a complete seal between the integrated mold sleeve 2 and the screw plug 3 within the main body 1, simplifying the sealing structure. The heat dissipation groove 25 on the surface of the mold sleeve 2 located within the cooling chamber 11 assists the water cooling mechanism 12 in heat dissipation. The outer diameter of the mold sleeve 2 is smaller than that of the screw plug 3, and the arc-shaped transition at the connection facilitates the installation of the integrated mold sleeve 2 and screw plug 3 into the main body 1.

[0028] Working principle: During installation of the integrated wire drawing die box, firstly, the die core 4 is installed into the die sleeve 2. Then, the sealing ring 24 is placed in the first sealing groove 22 and the second sealing groove 23 on the integrated die sleeve 2 and the screw plug 3. Next, it is threaded into the main body 1 using an Allen wrench. Finally, the cooling water tank 122 in the water cooling mechanism 12 is connected to the pipe 121 on the die sleeve 2 within the cooling chamber 11, thus completing the installation of the integrated wire drawing die box. For maintenance, simply remove the integrated die sleeve 2 and screw plug 3 from the main body 1 and replace the internal die core 4.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated wire drawing mold box, characterized in that: include The main body (1) has an inlet and an outlet of metal wire at both ends. A cooling chamber (11) is opened at the middle end of the main body (1). A mold sleeve (2) is snapped into the cooling chamber (11). The cooling chamber (11) is connected to the mold sleeve (2) through a water cooling mechanism (12). A screw plug (3) is installed at the outlet. The mold sleeve (2) and the screw plug (3) are integrally formed. Several sets of mold cores (4) are installed in the mold sleeve (2). Both ends of the mold sleeve (2) are sealed to the main body (1). The water cooling mechanism (12) includes a pipe (121) spirally distributed inside the mold (2), wherein the two ends of the pipe (121) are connected to the cooling water tank (122), and a water pump (123) is installed at the connection between the pipe (121) and the cooling water tank (122).

2. The integrated wire drawing mold box according to claim 1, characterized in that: The mold sleeve (2) has a through hole (21) for accommodating the mold core (4). The through hole (21) includes a first mounting part (211) with the same inner diameter and a second mounting part (212) with the inner diameter gradually decreasing from the inlet to the outlet. The mold core (4) is installed in both the first mounting part (211) and the second mounting part (212).

3. The integrated wire drawing mold box according to claim 2, characterized in that: The inner diameter of the first mounting part (211) is greater than the maximum inner diameter of the second mounting part (212), wherein the length of the first mounting part (211) is the same as the length of the mold core (4), and the length of the mold core (4) in the second mounting part (212) is less than the length of the second mounting part (212).

4. The integrated wire drawing mold box according to claim 3, characterized in that: The inner diameter of the plug (3) is larger than the inner diameter of the mold sleeve (2), and the inner surface of the plug (3) adopts an internal hexagonal structure. The outer surface of the plug (3) is threadedly connected to the body (1).

5. The integrated wire drawing die box according to claim 3, characterized in that: The inner diameter of the mold core (4) in the first mounting part (211) is larger than the inner diameter of the mold core (4) in the second mounting part (212) and the two are attached together. An arc transition is provided between the metal wire inlet and outlet of the mold core (4) and the end face of the mold core (4).

6. The integrated wire drawing die box according to claim 1, characterized in that: The mold sleeve (2) has a first sealing groove (22) on one end face near the entrance, and a second sealing groove (23) is provided on the side wall of the end of the mold sleeve (2) away from the first sealing groove (22). Both the first sealing groove (22) and the second sealing groove (23) are equipped with sealing rings (24).

7. The integrated wire drawing die box according to claim 6, characterized in that: The mold sleeve (2) has a heat dissipation groove (25) on part of its surface located in the cooling cavity (11), and the outer diameter of the mold sleeve (2) is smaller than the outer diameter of the screw plug (3).

8. The integrated wire drawing mold box according to claim 7, characterized in that: The outer surface of the mold sleeve (2) and the screw plug (3) are connected by an arc-shaped transition.

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