Combined forging die

Abstract

The invention discloses a combined forging die, and relates to the field of forging die, the combined forging die comprises a die body, the inner side of the die body is provided with a cooling runner, the side surface of the die body is fixedly provided with a combined insertion block for assembling the die, and the inner side of the joint of the cooling runner is hinged with a circular truncated cone plug for controlling on-off; the preheating assembly is arranged on the inner side of the die body to help to guide the flowing direction of preheating flames, the corresponding combined insertion blocks and coordination insertion grooves are arranged on the side faces of the die bodies to combine the multiple die bodies, and the circular truncated cone plugs and the push blocks are used for controlling on-off of cooling runners in the die bodies. According to the combined forging die, switching of internal cooling runners in the die body combination state and the independent use state is achieved, the overall cooling effect of the combined forging die is guaranteed, in addition, the preheating assembly is arranged in the die body to help overall balanced preheating, and the problem that in the prior art, overall uniform preheating of the die is difficult to achieve is solved; and meanwhile, the effect of monitoring the preheating progress of the die body is achieved, and preheating use of the forging die is facilitated.

Description

Technical Field

[0001] The invention relates to a forging die, relates to the field of forging dies, and in particular to a combined forging die. Background Art

[0002] Forging is a processing method that uses a forging machine to apply pressure to a metal blank to cause it to undergo plastic deformation in order to obtain a forging with certain mechanical properties, shape, and size. Forging can eliminate defects such as cast porosity produced during the metal smelting process and optimize the microstructure. The mechanical properties of forgings are generally better than those of castings of the same material.

[0003] Forging requires the use of molds to help with shaping. The molds include separate molds and combined molds. The combined molds are composed of multiple independent components and can be used to forge complex parts and combined parts. However, the forging mold needs to be preheated to 200-350℃ before use. The more complex the mold structure, the more difficult it is to preheat evenly. In addition, the mold needs to be cooled after forging, and the overall cooling process of the mold needs to be controlled, especially for combined forging molds, whose internal cooling channels cannot be connected smoothly.

[0004] To this end, those skilled in the art have proposed a combined forging die, which is designed to facilitate temperature control to ensure that the temperature of the die can be controlled during forging. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a combined forging die, and specifically relates to the field of forging dies.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a combined forging die, including a die body, the die body includes an upper die, a lower die, a guide and a limiter structure of the forging die, and the die is summarized.

[0007] A cooling channel is provided inside the mold body, and the mold body transports a cooling medium through the cooling channel to help cool the parts. After the parts are forged in the mold, the cooling medium is transported through the cooling channel to absorb the heat energy of the parts and the mold, thereby accelerating the molding of the parts.

[0008] In order to facilitate the combined installation of adjacent mold bodies and the communication use of internal cooling channels, a combined plug-in block is fixedly connected to the side of the mold body, and multiple mold bodies are correspondingly combined and installed through the combined plug-in block. Not only can the combined plug-in block realize the aligned installation of multiple mold bodies, but it is also convenient to connect the cooling channels inside multiple mold bodies through the combined plug-in block.

[0009] In order to realize the mode switching between single use and multiple use of the mold body, a conical plug is hingedly arranged at the joint where the cooling channel passes through the mold body, and the joint end of the cooling channel is sealed by the conical plug. When the mold body is used alone, the complete internal flow channel can meet the cooling needs. When multiple mold bodies are connected for use, the cooling channel inside the multiple mold bodies is connected through the conical plug, and at the same time, the cooling channel inside a single mold body is blocked to a certain extent to ensure the flow of cooling medium inside multiple mold bodies.

[0010] In order to achieve uniform preheating of the combined mold, a preheating component is also provided inside the mold body to help guide the preheating flame and airflow. The preheating component includes a preheating channel opened inside the mold body, and a baffle for closing the preheating channel. The baffle is fixed inside the mold body perpendicular to the extension direction of the preheating channel.

[0011] After the mold body is half-closed, it is preheated, and the preheating flame or air is evenly dispersed to various locations inside the mold body along the preheating flow channel, so that various positions of the mold body are evenly preheated. After the overall preheating of the mold body is completed, the mold is fully closed, and the baffle completes the sealing of the preheating flow channel, so that the residual heat flow channel arranged inside the mold body will not affect the forging.

[0012] Preferably, a matching slot is provided on the side of the mold body corresponding to the combined plug-in block, and the two mold bodies are installed corresponding to the matching slot through the combined plug-in block.

[0013] The cooling channel runs through the side wall of the connection between the combined plug-in block and the coordination slot. After the two mold bodies are combined, the cooling channel inside them can be connected as one to meet the flow requirements of the cooling medium.

[0014] The conical plug is hingedly arranged on the inner side of the cooling flow channel connecting end of the two mold bodies, and a push block is fixedly connected to the corresponding conical plug on the outer side of the cooling flow channel. When the two mold bodies are used in combination, the conical plug is pushed by the push block to deflect it, thereby connecting the originally blocked cooling flow channel, connecting the cooling flow channels on the inner sides of the two mold bodies, and at the same time, the original cooling flow channel in the mold body is blocked by the deflection of the conical plug, so that the cooling medium flows along the new cooling flow channel.

[0015] Preferably, an anti-skid groove is provided on the side of the conical plug corresponding to the push block. When the push block is pressed against the side of the conical plug, the anti-skid groove ensures the pushing effect of the push block on the conical plug, thereby avoiding slipping due to the smooth inclined surface of the conical plug.

[0016] A first spring is tightly arranged on the inner side of the truncated cone plug. On the one hand, the first spring arranged on the inner side of the truncated cone plug can enhance the blocking effect on the cooling channel. On the other hand, the elastic force of the first spring is used to reset the truncated cone plug after the two mold bodies are separated.

[0017] Preferably, a sealing rubber pad is fixedly provided on the inner side of the cooling channel interface end corresponding to the truncated cone plug, and the sealing rubber pad is combined with the tightening effect of the first spring to ensure that the cooling medium will not overflow from the cooling channel interface when the mold body is used alone.

[0018] A guide groove is provided on the inner wall of the cooling channel corresponding to the first spring, and one end of the first spring away from the truncated cone plug extends to the inner side of the guide groove and is fixed thereto. The guide groove is provided to guide and limit the first spring, thereby preventing the first spring from exerting a stable elastic force on the truncated cone plug due to an angle change when the truncated cone plug is deflected.

[0019] Preferably, a positioning pin is slidably provided on the inner side of the coordination slot corresponding to the combined plug-in block, and a fixing bolt is threadedly provided on the side of the mold body corresponding to the positioning pin, and the fixing bolt extends to the bottom of the positioning pin to contact and tighten therewith.

[0020] After the two mold bodies are assembled and installed through the combined plug-in block, the fixing bolt is screwed into place, and the fixed bolt pushes the positioning pin slidably set on the inner side of the matching slot upward, and the positioning pin is pressed against the side wall of the combined plug-in block to realize the combined positioning of the two mold bodies.

[0021] Preferably, a coordination groove is opened on the inner side of the mold body corresponding to the baffle plate, and the coordination groove is perpendicular to the extension direction of the preheating runner. When the upper mold and the lower mold of the mold body are closed, the staggered blocks and the coordination grooves are used to block the preheating runner, so that excessive overflow will not occur during the forging process of the parts in the mold body to affect the shape of the parts.

[0022] A constant temperature stopper is slidably provided on the inside of the mold body through the coordination groove, and the constant temperature stopper moves accordingly with the change of the mold body temperature. Before the mold body temperature does not reach the preheating requirement, the positioning stopper forms a block to block the stopper, so that the mold closing of the mold body cannot be completed. When the mold body is preheated to above the specified temperature, the constant temperature stopper exceeds the limit position, and the baffle completely enters the coordination groove to complete the mold closing of the mold body, and the forging of subsequent parts can continue.

[0023] Preferably, a temperature sensing cavity is provided inside the mold body, and the temperature sensing cavity accommodates a temperature sensing medium. As the temperature of the mold body changes, the volume of the temperature sensing medium in the temperature sensing cavity changes accordingly. The change in the temperature of the temperature sensing medium in the temperature sensing cavity is used to determine when the mold closing is completed. This not only ensures the guiding effect of the preheating flow channel on the preheating flame and airflow and ensures uniform preheating of the mold body, but also helps to judge the preheating progress of the mold body.

[0024] An advance rod is inserted into the inner side of the temperature sensing cavity. As the preheating temperature of the mold body changes, the advance rod moves accordingly. One end of the advance rod extends outside the temperature sensing cavity and is slidably connected to a constant temperature block. The constant temperature block is driven by the advance rod to move accordingly with the preheating temperature of the mold body.

[0025] Preferably, a piston is slidably provided inside the temperature sensing chamber, and the piston seals the temperature sensing medium in the temperature sensing chamber well and can move along the temperature sensing chamber according to the change of the volume of the temperature sensing medium.

[0026] The advance rod extends into the temperature sensing chamber at one end and is fixedly connected to the piston. The constant temperature stop block is coaxially plugged with the advance rod at one end away from the advance rod and is provided with an adjusting bolt. By means of the plug-in connection between the constant temperature stop block and the advance rod, the extension length of the constant temperature stop block relative to the baffle can be adjusted according to usage needs, thereby ensuring accurate control of the mold closing temperature of the mold body.

[0027] Preferably, a liquid replenishing microtube is provided at the upper end of the temperature sensing cavity and passes through the mold body. An airtight valve is fixed to the end of the liquid replenishing microtube away from the temperature sensing cavity. The temperature sensing medium in the temperature sensing cavity is replenished through the liquid replenishing microtube, and excess gas in the temperature sensing cavity is conveniently discharged through the airtight valve.

[0028] Preferably, a second spring is fixedly connected to the inner side of the constant temperature stop block, and the other end of the second spring is fixed to the end of the advance rod. The second spring provides elastic force for the installation of the advance rod and the constant temperature stop block, thereby ensuring that there is no excessive fitting gap between the two when the installation length of the advance rod relative to the constant temperature stop block is adjusted by the adjusting bolt, thereby ensuring that the advance rod is in tight contact with the end of the adjusting bolt.

[0029] The present invention discloses a combined forging die, which has the following beneficial effects: 1. The combined forging die has corresponding combination plugs and matching slots on the side of the die body to combine multiple die bodies, and controls the on-off of the cooling channel in the die body through the truncated cone plug and the push block, so as to realize the switching of the internal cooling channel in the two states of die body combination and single use, thereby ensuring the overall cooling effect of the combined forging die. In addition, a preheating component is arranged in the die body to help the overall uniform preheating, thereby avoiding the problem that the prior art is difficult to achieve the overall uniform preheating of the die. At the same time, it also has the effect of monitoring the preheating progress of the die body, which is convenient for the preheating use of the forging die.

[0030] 2. In the combined forging die, a conical plug is hingedly provided at the joint of the cooling flow channel, and the first spring and the guide groove are combined to ensure the sealing effect of the cooling flow channel joint. In order to ensure the pushing effect of the push block on the conical plug, an anti-skid groove is also provided on the side of the conical plug. The push block applies a thrust to the conical plug through the anti-skid groove to avoid the push block and the conical plug from slipping due to the deflection of the conical plug, while ensuring the close pushing relationship between the two.

[0031] 3. In the combined forging die, a positioning pin is slidably arranged on the inner side of the matching slot by means of a fixing bolt. When two die bodies are used in combination through a combined plug-in block and the matching slot, the positioning pin is pushed into place by the fixing bolt. The positioning pin is pressed against the side of the combined plug-in block to realize the positioning of the combined plug-in block on the inner side of the matching slot, thereby ensuring the stable connection of multiple combined die bodies. In addition, the tightness of the fit between the cooling channels inside adjacent die bodies is also enhanced. In the process of the positioning pin being pushed into place, a lateral pushing force is also generated on the combined plug-in block, thereby making the connection at the cooling channel joint tighter.

[0032] 4. In the combined forging die, the die body is uniformly preheated by guiding the preheating flame and air flow through the preheating channel arranged on the inner side. At the same time, in order to prevent the existence of the preheating channel from affecting the shape of the forged parts, a baffle is correspondingly arranged to block the preheating channel. In the semi-closed mold state, the preheating flame and air are guided to various parts of the die body along the preheating channel. After the preheating is completed, the die is fully closed, and the baffle cooperates with the coordination groove to block the preheating channel.

[0033] 5. The combined forging die is provided with a constant temperature stop block inside the die body which can move forward according to the temperature change. The baffle is pressed and limited by the constant temperature stop block. As the temperature of each area of ​​the die body is preheated and the temperature rises, the volume of the medium in the temperature sensing cavity increases, pushing the moving rod forward. The baffle can fully enter the coordination groove only after the temperature of the die body exceeds the preheating value. The preheating process of each area of ​​the die body can be monitored, which is also beneficial to the distribution of the preheating flame and convenient for the overall preheating needs of the die body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the preheating assembly inside the phantom body of the present invention; Figure 3For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 This is a cross-sectional view of the combined plug-in structure of the present invention; Figure 5 It is a cross-sectional view of the coordination slot structure of the present invention; Figure 6 This is a schematic diagram of the installation structure of the constant temperature block of the present invention; Figure 7 This is a schematic diagram of the installation and adjustment structure of the constant temperature stop block of the present invention.

[0036] In the figure: 1. mold body; 2. cooling flow channel; 3. combination plug; 4. cone plug; 5. preheating assembly; 501. preheating flow channel; 502. baffle; 6. coordination slot; 7. push block; 8. anti-skid groove; 9. first spring; 10. sealing rubber pad; 11. guide groove; 12. positioning pin; 13. stabilizing bolt; 14. coordination groove; 15. constant temperature block; 16. temperature sensing chamber; 17. advance rod; 18. piston; 19. distance adjusting bolt; 20. liquid replenishing micro tube; 21. airtight valve; 22. second spring. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are 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.

[0038] The embodiment of the present invention discloses a combined forging die; According to the attached Figure 1 As shown, it includes a mold body 1, which includes an upper mold, a lower mold, a guide and a limiter structure of a forging mold, and is summarized as a mold.

[0039] A cooling channel 2 is provided inside the mold body 1, and the mold body 1 conveys a cooling medium through the cooling channel 2 to help cool the parts. After the parts are forged in the mold body 1, the cooling medium is conveyed through the cooling channel 2 to absorb the heat energy of the parts and the mold, thereby accelerating the forming of the parts.

[0040] In order to facilitate the combined installation of adjacent mold bodies 1 and the connected use of the internal cooling flow channel 2, a combined plug-in block 3 is fixedly connected to the side of the mold body 1, and multiple mold bodies 1 are correspondingly combined and installed through the combined plug-in block 3. In addition, the upper mold and the selection mold are also correspondingly combined and installed through the combined plug-in block 3. Not only can the combined plug-in block 3 realize the aligned installation of multiple mold bodies 1, but it is also convenient to connect the cooling flow channels 2 in multiple mold bodies 1 through the combined plug-in block 3.

[0041] According to the attached Figure 2 and attached Figure 3 As shown, in order to realize the mode switching between single use and multiple use of the mold body 1, a conical plug 4 is hingedly provided at the joint where the cooling channel 2 passes through the mold body 1, and the joint end of the cooling channel 2 is sealed by the conical plug 4. When the mold body 1 is used alone, the complete cooling channel 2 inside it can meet the cooling needs. When multiple mold bodies 1 are connected for use, the cooling channel 2 inside the multiple mold bodies 1 is connected through the conical plug 4, and at the same time, the cooling channel 2 inside a single mold body 1 is blocked to a certain extent to ensure the flow of cooling medium inside the multiple mold bodies 1.

[0042] In order to achieve uniform preheating of the combined mold, a preheating component 5 is also provided on the inner side of the mold body 1 to help guide the preheating flame and airflow. The preheating component 5 includes a preheating channel 501 opened on the inner side of the mold body 1, and a baffle 502 for closing the preheating channel 501. The baffle 502 is fixed on the inner side of the mold body 1 perpendicular to the extension direction of the preheating channel 501.

[0043] After the mold body 1 is half-closed, it is preheated, and the preheating flame or air is evenly dispersed to various places inside the mold body 1 along the preheating channel 501, so that various positions of the mold body 1 are evenly preheated. After the overall preheating of the mold body 1 is completed, the mold is fully closed, and the baffle 502 completes the sealing of the preheating channel 501, so that the preheating channel 501 set inside the mold body 1 will not affect the forging.

[0044] According to the attached Figure 3 As shown, a matching slot 6 is provided on the side of the mold body 1 corresponding to the combined plug-in block 3 , and the two mold bodies 1 are installed corresponding to the matching slot 6 through the combined plug-in block 3 .

[0045] The cooling channel 2 penetrates the side wall of the joint between the combined plug block 3 and the coordination slot 6. After the two mold bodies 1 are combined, the cooling channel 2 inside them can be connected as one to meet the flow requirements of the cooling medium.

[0046] The conical plug 4 is hingedly arranged on the inner side of the connecting end of the cooling channel 2 of the two mold bodies 1, and a push block 7 is fixedly connected to the outer side of the cooling channel 2 corresponding to the conical plug 4. When the two mold bodies 1 are used in combination, the conical plug 4 is pushed by the push block 7 to deflect it, thereby connecting the originally blocked cooling channel 2, so that the cooling channel 2 on the inner sides of the two mold bodies 1 is connected, and at the same time, the original cooling channel 2 in the mold body 1 is blocked by the deflection of the conical plug 4, so that the cooling medium flows along the new cooling channel 2.

[0047] Preferably, an anti-skid groove 8 is provided on the side of the conical plug 4 corresponding to the push block 7. When the push block 7 is pressed against the side of the conical plug 4, the anti-skid groove 8 ensures that the push block 7 pushes the conical plug 4, thereby avoiding slipping due to the smooth inclined surface of the conical plug 4.

[0048] According to the attached Figure 4 As shown, a first spring 9 is tightly arranged on the inner side of the truncated cone plug 4. On the one hand, the first spring 9 arranged on the inner side of the truncated cone plug 4 can enhance the blocking effect on the cooling channel 2. On the other hand, the elastic force of the first spring 9 is used to reset the truncated cone plug 4 after the two mold bodies 1 are separated.

[0049] Preferably, a sealing pad 10 is fixedly provided on the inner side of the interface end of the cooling channel 2 corresponding to the truncated cone plug 4. The sealing pad 10 and the first spring 9 work together to prevent the cooling medium from overflowing from the interface of the cooling channel 2 when the mold body 1 is used alone.

[0050] A guide groove 11 is provided on the inner wall of the cooling channel 2 corresponding to the first spring 9. One end of the first spring 9 away from the truncated cone plug 4 extends to the inner side of the guide groove 11 and is fixed thereto. The guide groove 11 is provided to guide and limit the first spring 9 to prevent the truncated cone plug 4 from deflecting and affecting the first spring 9 from exerting a stable elastic force on it due to the change in angle.

[0051] According to the attached Figure 5 As shown, a positioning pin 12 is slidably provided on the inner side of the coordination slot 6 corresponding to the combined plug block 3, and a fixing bolt 13 is threadedly provided on the side of the mold body 1 corresponding to the positioning pin 12, and the fixing bolt 13 extends to the bottom of the positioning pin 12 to contact and tighten therewith.

[0052] After the two mold bodies 1 are assembled and installed through the combined plug-in block 3, the stabilizing bolt 13 is screwed in place. The stabilizing bolt 13 pushes the positioning pin 12 slidably set on the inner side of the matching slot 6 upward, and the positioning pin 12 is pressed against the side wall of the combined plug-in block 3 to realize the combined positioning of the two mold bodies 1.

[0053] According to the attached Figure 6 and attached Figure 7 As shown, a coordination groove 14 is opened on the inner side of the mold body 1 corresponding to the baffle plate 502, and the coordination groove 14 is perpendicular to the extension direction of the preheating runner 501. When the upper mold and the lower mold of the mold body 1 are closed, the staggered baffle plates 502 and the coordination grooves 14 are used to block the preheating runner 501, so that during the forging process of the parts in the mold body 1, excessive overflow will not occur to affect the shape of the parts.

[0054] A constant temperature stopper 15 is slidably provided on the inner side of the mold body 1 through the coordination groove 14. The constant temperature stopper 15 moves accordingly with the change of the temperature of the mold body 1. Before the temperature of the mold body 1 does not reach the preheating requirement, the constant temperature stopper 15 blocks the baffle 502, so that the mold body 1 cannot be completely closed. When the mold body 1 is preheated to above the specified temperature, the constant temperature stopper 15 exceeds the limit position, and the baffle 502 completely enters the coordination groove 14, completing the mold closing of the mold body 1, and the forging of subsequent parts can continue.

[0055] Preferably, a temperature sensing cavity 16 is provided on the inner side of the mold body 1, and the temperature sensing cavity 16 contains a temperature sensing medium. As the temperature of the mold body 1 changes, the volume of the temperature sensing medium in the temperature sensing cavity 16 changes accordingly. The change in the temperature of the temperature sensing medium in the temperature sensing cavity 16 is used to determine when the mold closing is completed. This not only ensures the guiding effect of the preheating flow channel 501 on the preheating flame and airflow, and ensures uniform preheating of the mold body 1, but also helps to judge the preheating progress of the mold body 1.

[0056] An advance rod 17 is inserted into the inner side of the temperature sensing cavity 16. As the preheating temperature of the mold body 1 changes, the advance rod 17 moves accordingly. One end of the advance rod 17 extends outside the temperature sensing cavity 16 and is slidably connected to the constant temperature block 15. The constant temperature block 15 is driven by the advance rod 17 to move accordingly with the preheating temperature of the mold body 1.

[0057] Preferably, a piston 18 is slidably provided inside the temperature sensing chamber 16 , and the piston 18 seals the temperature sensing medium in the temperature sensing chamber 16 well, and can move along the temperature sensing chamber 16 according to the change of the volume of the temperature sensing medium.

[0058] The advancing rod 17 extends into the temperature sensing chamber 16 at one end and is fixedly connected to the piston 18. The end of the constant temperature stopper 15 away from the advancing rod 17 is coaxially plugged with the advancing rod 17 and is provided with an adjusting bolt 19. By means of the plug-in connection between the constant temperature stopper 15 and the advancing rod 17, the extension length of the constant temperature stopper 15 relative to the baffle 502 can be adjusted according to the needs of use, thereby ensuring the accurate control of the closing temperature of the mold body 1.

[0059] Preferably, a liquid infusion microtube 20 is provided at the upper end of the temperature sensing cavity 16 and passes through the mold body 1. An airtight valve 21 is fixed to the end of the liquid infusion microtube 20 away from the temperature sensing cavity 16. The temperature sensing medium in the temperature sensing cavity 16 is replenished through the liquid infusion microtube 20, and excess gas in the temperature sensing cavity 16 is conveniently discharged through the airtight valve 21.

[0060] Preferably, a second spring 22 is fixedly connected to the inner side of the constant temperature stop block 15, and the other end of the second spring 22 is fixed to the end of the advance rod 17. The second spring 22 provides elastic force for the installation of the advance rod 17 and the constant temperature stop block 15, ensuring that there is no excessive fitting gap between the two when the installation length of the advance rod 17 relative to the constant temperature stop block 15 is adjusted by the adjusting bolt 19, thereby ensuring that the advance rod 17 is in tight contact with the end of the adjusting bolt 19.

[0061] The combined forging die has corresponding combined plug blocks 3 and matching slots 6 arranged on the side of the die body 1 to combine multiple die bodies 1, and controls the on-off of the cooling channel 2 in the die body 1 through the truncated cone plug 4 and the push block 7, so as to realize the switching of the internal cooling channel 2 in the two states of the die body 1 combined and used alone, thereby ensuring the overall cooling effect of the combined forging die. In addition, a preheating component 5 is arranged in the die body 1 to help perform overall uniform preheating, thereby avoiding the problem that it is difficult to achieve overall uniform preheating of the die in the prior art, and at the same time, it also has the effect of monitoring the preheating progress of the die body 1, thereby facilitating the preheating use of the forging die.

[0062] Furthermore, a conical plug 4 is hingedly provided at the joint of the cooling channel 2, and the first spring 9 and the guide groove 11 are combined to ensure the sealing effect of the joint of the cooling channel 2. In order to ensure the pushing effect of the push block 7 on the conical plug 4, an anti-skid groove 8 is also provided on the side of the conical plug 4. The push block 7 applies a thrust to the conical plug 4 through the anti-skid groove 8 to prevent the push block 7 from slipping due to the tight contact with the conical plug 4 as the conical plug 4 deflects, while ensuring the tight pushing relationship between the two.

[0063] Furthermore, a positioning pin 12 is slidably provided on the inner side of the coordination slot 6 by means of a fixing bolt 13. When the two mold bodies 1 are used in combination with the coordination slot 6 through the combined plug-in block 3, the positioning pin 12 is pushed into position by the fixing bolt 13. The positioning pin 12 is pressed against the side of the combined plug-in block 3 to realize the positioning of the combined plug-in block 3 on the inner side of the coordination slot 6, thereby ensuring a stable connection of multiple combined mold bodies 1. In addition, the tightness of the fit between the cooling channels 2 on the inner sides of adjacent mold bodies 1 is also enhanced. In the process of the positioning pin 12 being pushed into position, a lateral pushing force is also generated on the combined plug-in block 3, thereby making the connection at the joint of the cooling channel 2 tighter.

[0064] Furthermore, the mold body 1 is preheated uniformly as a whole by guiding the preheating flame and air flow through the preheating channel 501 arranged on the inner side. At the same time, in order to prevent the existence of the preheating channel 501 from affecting the shape of the forged parts, a baffle 502 is correspondingly arranged to block the preheating channel 501. In the semi-closed mold state, the preheating flame and air are guided to various parts of the mold body 1 along the preheating channel 501. After the preheating is completed, the mold is fully closed, and the baffle 502 cooperates with the coordination groove 14 to block the preheating channel 501.

[0065] Furthermore, a constant temperature stop block 15 is provided on the inner side of the mold body 1, which can move forward according to the temperature change. The baffle 502 is pressed and limited by the constant temperature stop block 15. As the temperature of each area of ​​the mold body 1 is preheated and heated, the volume of the medium in the temperature sensing cavity 16 increases, squeezing the moving rod 17 to move forward. The baffle 502 can fully enter the coordination groove 14 only after the temperature of the mold body 1 exceeds the preheating value. The preheating process of each area of ​​the mold body 1 can be monitored, which is also beneficial to the distribution of the preheating flame and facilitates the overall preheating needs of the mold body 1.

[0066] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A combined forging die, comprising a die body (1), wherein the die body (1) comprises an upper die, a lower die, a guide and a limiter structure of the forging die, and a cooling channel (2) is arranged inside the die body (1). The die body (1) conveys a cooling medium through the cooling channel (2) to help cool a part, and is characterized in that: A combination plug-in block (3), the combination plug-in block (3) being fixedly connected to a side surface of the mold body (1), and a plurality of the mold bodies (1) being assembled and installed in a corresponding manner via the combination plug-in block (3); A truncated cone plug (4), the truncated cone plug (4) being hingedly arranged at the joint where the cooling channel (2) penetrates the mold body (1), and sealing the joint end of the cooling channel (2); A preheating component (5), the preheating component (5) comprising a preheating channel (501) opened inside a mold body (1), and a baffle (502) for closing the preheating channel (501), the baffle (502) being fixed on the inside of the mold body (1) perpendicular to the extension direction of the preheating channel (501), the mold body (1) being preheated after the mold body (1) is half-closed, the preheating flame or air is evenly dispersed along the preheating channel (501), and after the overall preheating of the mold body (1) is completed, the mold is fully closed, and the baffle (502) completes the closing of the preheating channel (501).

2. The combined forging die according to claim 1, characterized in that: A matching slot (6) is provided on the side of the mold body (1) corresponding to the combined plug-in block (3); the cooling channel (2) penetrates the side wall at the connection between the combined plug-in block (3) and the matching slot (6); the truncated cone plug (4) is hingedly arranged on the inner side of the connection end of the cooling channel (2) of the two mold bodies (1); and a push block (7) is fixedly connected to the outer side of the cooling channel (2) corresponding to the truncated cone plug (4).

3. The combined forging die according to claim 2, characterized in that: An anti-slip groove (8) is provided on the side surface of the truncated cone plug (4) corresponding to the push block (7), and a first spring (9) is tightly arranged on the inner side of the truncated cone plug (4).

4. The combined forging die according to claim 3, characterized in that: A sealing rubber pad (10) is fixedly arranged on the inner side of the interface end of the cooling flow channel (2) corresponding to the truncated cone plug (4), and a guide groove (11) is opened on the inner wall of the cooling flow channel (2) corresponding to the first spring (9), and one end of the first spring (9) away from the truncated cone plug (4) extends to the inner side of the guide groove (11) and is fixed thereto.

5. The combined forging die according to claim 2, characterized in that: A positioning pin (12) is also slidably provided on the inner side of the coordination slot (6) corresponding to the combined plug block (3), and a fixing bolt (13) is threadedly provided on the side of the mold body (1) corresponding to the positioning pin (12), and the fixing bolt (13) extends below the positioning pin (12) to contact and tighten therewith.

6. The combined forging die according to claim 1, characterized in that: A coordination groove (14) is provided on the inner side of the mold body (1) corresponding to the baffle plate (502), the coordination groove (14) is perpendicular to the extension direction of the preheating flow channel (501), and a constant temperature stopper (15) is slidably provided on the inner side of the mold body (1) and penetrates the coordination groove (14).

7. The combined forging die according to claim 6, characterized in that: A temperature sensing cavity (16) is provided inside the mold body (1), a carrying rod (17) is inserted inside the temperature sensing cavity (16), and one end of the carrying rod (17) extending outside the temperature sensing cavity (16) is slidably sleeved with a constant temperature stopper (15).

8. The combined forging die according to claim 7, characterized in that: A piston (18) is slidably disposed inside the temperature sensing chamber (16); one end of the advancement rod (17) extending into the inside of the temperature sensing chamber (16) is fixedly connected to the piston (18); and one end of the constant temperature stopper (15) away from the advancement rod (17) is coaxially plugged with the advancement rod (17) and is provided with a distance adjusting bolt (19).

9. The combined forging die according to claim 7, characterized in that: A liquid replenishing micro-tube (20) is provided at the upper end of the temperature sensing chamber (16) and passes through the mold body (1), and an airtight valve (21) is fixed to one end of the liquid replenishing micro-tube (20) away from the temperature sensing chamber (16).

10. The combined forging die according to claim 7, characterized in that: A second spring (22) is fixedly connected to the inner side of the constant temperature stopper (15), and the other end of the second spring (22) is fixed to the end of the advancement rod (17).

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