Two-up and two-down direct drive type press mould base structure

Abstract

The utility model discloses an upper-two-lower-two direct drive type press die frame structure which comprises a box body, an upper die mechanism and a lower die mechanism, and the lower die mechanism comprises a die frame guide column, a middle die plate, a first lower plate, a second lower plate, a middle die lifting driving device and a second lower lifting driving device. The two or more die frame guide columns are fixedly connected between a bottom plate of the box body and an upper fixing plate of the upper die mechanism, and the middle die plate and the second lower plate are sequentially installed from top to bottom and are both in sliding connection with the die frame guide columns. The middle mold lifting driving device sequentially penetrates through the bottom plate and the second lower plate through a middle mold lead screw transmission assembly and then is in transmission connection with the middle mold plate, and the second lower lifting driving device penetrates through the bottom plate through a second lower lead screw transmission assembly and then is in transmission connection with the second lower plate. Compared with the traditional mode that multiple transmission parts such as a guide rod and a bottom plate are adopted for connection, the lower die mechanism has the advantages that the complexity of the transmission structure of the lower die mechanism is simplified, the height of the press die frame is greatly reduced, the assembly is convenient, the positioning error is reduced, and the operation is stable.

Description

Technical Field

[0001] This utility model relates to the field of powder molding manufacturing technology, and more specifically, to a two-upper-two-lower direct-drive press mold frame structure. Background Technology

[0002] Powder molding presses generally include an upper housing, an upper mold mechanism, and a lower mold mechanism. The structure of the lower mold mechanism in existing two-upper-lower-two-lower-two-presses is usually consistent with the upper-lower-two-body structure of a 40T powder molding press disclosed in utility model patent number CN211662715U. This lower mold mechanism includes a middle mold plate, a middle mold guide post, a middle mold base plate, a lower plate, a lower fixed plate, a lower second plate, a lower second guide post, a lower second base plate, a middle mold lifting drive device, and a lower second lifting drive device. The middle mold guide post is connected between the middle mold plate and the middle mold base plate and passes through the lower second plate and the lower fixed plate. The lower second guide post is connected between the lower second plate and the lower second base plate and passes through the lower fixed plate. The upper end of the middle mold lifting drive device passes through the lower second base plate and is connected to the middle mold base plate. There are two lower second lifting drive devices, and the two lower second lifting drive devices are respectively connected to the two sides of the lower second base plate. The lower mold mechanism of this patent is very complex, using multiple transmission components such as guide rods and base plates for connection. This significantly increases the overall height of the powder forming press and also increases transmission losses, making assembly difficult. It is also prone to vibration during pressing, and this instability will affect the forming accuracy of the product. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects in the prior art and provide a simplified transmission structure of the lower mold mechanism, which greatly reduces the height of the press mold frame and provides a stable upper two-lower two direct drive press mold frame structure.

[0004] To achieve the above objectives, this utility model provides a two-upper-two-lower direct-drive press mold frame structure, including a housing, an upper mold mechanism, and a lower mold mechanism. The housing has a top plate and a bottom plate at its upper and lower ends, respectively. The upper mold mechanism is installed at the upper end of the housing, and the lower mold mechanism is installed at the lower end of the housing and located directly below the upper mold mechanism. The lower mold mechanism includes mold frame guide pillars, a middle mold plate, a lower lower plate, a lower second plate, a middle mold lifting drive device, and a lower second plate lifting drive device. Two or more mold frame guide pillars are provided and are respectively fixedly connected to the bottom plate and the upper mold plate of the housing. Between the upper fixed plates of the mold mechanism, the middle mold plate and the lower two plates are installed sequentially from top to bottom and are slidably connected to the mold frame guide pillars. The lower plate is fixedly connected to the top surface of the base plate. The middle mold lifting drive device and the lower two lifting drive device are respectively installed upward through the bottom surface of the base plate. The middle mold lifting drive device passes through the base plate and the lower two plates sequentially through the middle mold lead screw transmission assembly and is connected to the middle mold plate to drive it to move up and down. The lower two lifting drive device passes through the base plate through the lower two lead screw transmission assembly and is connected to the lower two plates to drive it to move up and down.

[0005] Preferably, the middle mold lifting drive device is configured as a middle mold lifting drive motor, and the middle mold lead screw transmission assembly includes a middle mold lead screw, a middle mold lead screw bearing seat, and a middle mold lead screw sleeve. The middle mold lifting drive motor is installed facing upwards at the bottom of the base plate, the middle mold lead screw bearing seat is embedded in the top surface of the base plate, the bottom end of the middle mold lead screw is connected to the middle mold lifting drive motor and its top end passes through the lower two plates and extends into the interior of the middle mold template, one end of the middle mold lead screw sleeve passes through the lower two plates and is fixedly connected to the bottom of the middle mold template, the middle mold lead screw is rotatably connected to the middle mold lead screw bearing seat and threadedly connected to the middle mold lead screw sleeve, and the middle mold lifting drive motor can drive the middle mold lead screw to rotate, thereby driving the middle mold template to move up and down.

[0006] Preferably, the lower two lifting drive device is configured as a lower two lifting drive motor, and the lower two lead screw transmission assembly includes a lower two lead screw, a lower two lead screw bearing seat, and a lower two lead screw sleeve. The lower two lifting drive motor is mounted upwards at the bottom of the base plate, the lower two lead screw bearing seat is embedded in the top surface of the base plate, the bottom end of the lower two lead screw is drivenly connected to the lower two lifting drive motor and its top end extends into the interior of the lower two plate, one end of the lower two lead screw sleeve is fixedly connected to the bottom of the lower two plate, the lower two lead screw is rotatably connected to the lower two lead screw bearing seat and threadedly connected to the lower two lead screw sleeve, and the lower two lifting drive motor can drive the lower two lead screw to rotate, thereby driving the lower two plate to move up and down.

[0007] Preferably, the lower mold mechanism further includes a mandrel lifting drive assembly. The lower plate, lower second plate, and middle mold plate each have mandrel through holes through which the output portion of the mandrel lifting drive assembly passes. The mandrel lifting drive assembly includes a mandrel electric cylinder, a mandrel guide rod, a mandrel fixing plate, a mandrel floating plate, a mandrel lead screw, a mandrel lead screw bearing seat, a mandrel lead screw sleeve, a mandrel cylinder cover, a mandrel piston, a mandrel mounting base, and a mandrel locking block. The mandrel electric cylinder is mounted on one side of the mandrel fixing plate, and the other side of the mandrel fixing plate is fixedly connected to the bottom plate via the mandrel guide rod. The mandrel floating plate slides along the mandrel guide rod. The mandrel screw bearing seat is embedded on the other side of the mandrel fixing plate. One end of the mandrel screw is connected to the output part of the mandrel electric cylinder and rotatedly connected to the mandrel screw bearing seat. The bottom end of the mandrel screw sleeve is fixedly connected to the top of the mandrel floating plate. The other end of the mandrel screw passes through the mandrel floating plate and is threadedly connected to the mandrel screw sleeve. The mandrel cylinder cover is fixedly connected to the top of the mandrel screw sleeve. The bottom of the mandrel piston is movably inserted inside the mandrel cylinder cover and the mandrel screw sleeve. The mandrel mounting seat is installed on the top of the mandrel piston. The mandrel locking block is installed in conjunction with the mandrel mounting seat.

[0008] Preferably, the upper mold mechanism includes an upper lifting drive assembly, an upper second lifting drive assembly, an upper guide column, an upper first guide plate, an upper second guide plate, an upper first plate, an upper second plate, and an upper first plate guide rod. The upper guide column has two or more members and is fixedly connected between the top plate and the upper fixed plate. The upper first guide plate and the upper second guide plate are installed sequentially from top to bottom and are slidably connected to the upper guide column. The upper second lifting drive assembly is installed on the top of the top plate. The upper second lifting drive assembly passes through the upper first guide plate, the upper second guide plate, and the upper fixed plate through its output portion and is then connected to the upper second plate, driving it to move up and down. Two upper lifting drive assemblies are provided and installed at both ends of the upper first guide plate. The upper first lifting drive assembly is connected to the upper second guide plate through its output portion. The upper first plate guide rod passes through the upper fixed plate and the upper second plate and is fixedly connected between the upper second guide plate and the upper first plate. The upper first lifting drive assembly can drive the upper second guide plate and the upper first plate to move up and down simultaneously.

[0009] Preferably, the top plate has two through holes for the upper lifting drive assembly to pass through.

[0010] Preferably, the upper lifting drive assembly includes an upper lifting drive motor, an upper reducer, an upper lead screw, an upper lead screw bearing seat, and an upper nut sleeve. The upper lifting drive motor is mounted on both sides of the upper guide plate via the upper reducer. The upper lead screw bearing seats are respectively fixedly mounted on both sides of the upper guide plate. The top of the upper lead screw is respectively connected to the upper second lifting drive assembly and rotatably connected to its corresponding upper lead screw bearing seat. The upper end of the upper nut sleeve is respectively mounted on both sides of the upper second guide plate. The upper lead screw is respectively vertically set and passes through the upper second guide plate before being threadedly connected to the upper nut sleeve. The output part of the upper lifting drive motor is connected to the top end of the upper lead screw.

[0011] Preferably, each of the two upper lifting drive components includes an upper two lifting drive motor, an upper two lead screw, an upper two lead screw bearing seat, and an upper two nut sleeve. The upper two lifting drive motor is fixedly installed on the top of the top plate. The upper two lead screw bearing seat is embedded in the top plate. The top of the upper two lead screw is rotatably connected to the upper two lead screw bearing seat. The upper end of the upper two nut sleeve is fixedly installed on the upper guide plate. The upper two lead screw is vertically arranged and threadedly connected to the upper two nut sleeve. The lower end of the upper two nut sleeve passes through the upper two guide plates and the upper fixed plate and is connected to the top surface of the upper two plates through a connector. The output part of the upper two lifting drive motor is drivenly connected to the top end of the upper two lead screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model has a compact structure and reasonable design. The middle mold lifting drive device and the lower two lifting drive device of the lower mold mechanism directly drive their respective middle mold plate and lower two plate to move up and down through their respective middle mold lead screw transmission components and lower two lead screw transmission components. Compared with the traditional method of connecting multiple transmission components such as guide rods and base plates, it simplifies the complexity of the transmission structure of the lower mold mechanism, greatly reduces the height and volume of the press mold frame, facilitates assembly, and can also improve transmission efficiency and accuracy, reduce positioning errors, and provide stable and rapid response. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a two-upper-two-lower direct-drive press mold frame structure provided in an embodiment of this utility model;

[0016] Figure 2 This is an enlarged schematic diagram of the lower mold mechanism of a two-upper-two-lower direct-drive press mold frame structure provided in this utility model embodiment;

[0017] Figure 3 This is a schematic diagram of the mandrel lifting drive assembly of a two-upper-two-lower direct-drive press mold frame structure provided in this embodiment of the utility model;

[0018] Figure 4 This is a cross-sectional schematic diagram of the lower mold mechanism of a two-upper-two-lower direct-drive press mold frame structure provided in this embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the upper mold mechanism of a two-upper-two-lower direct-drive press mold frame structure provided in this embodiment of the utility model;

[0020] Figure 6 This is an enlarged top view of a two-upper-two-lower direct-drive press mold frame structure provided in this embodiment of the utility model;

[0021] Figure 7 This is a schematic diagram of the working of a two-upper-two-lower direct-drive press mold frame structure provided in this embodiment of the utility model. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please refer to Figure 1 The present invention provides a two-upper-two-lower direct-drive press mold frame structure, including a housing 1, an upper mold mechanism 2 and a lower mold mechanism 3, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, the top and bottom ends of the box body 1 can be provided with a top plate 11 and a bottom plate 12, respectively. The upper mold mechanism 2 is installed at the upper end of the box body 1, and the lower mold mechanism 3 is installed at the lower end of the box body 1 and located directly below the upper mold mechanism 2.

[0025] like Figure 2 As shown, the lower mold mechanism 3 may include mold frame guide pillars 31, middle mold plate 32, lower plate 33, lower plate 34, middle mold lifting drive device 35, and lower plate 36. The mold frame guide pillars 31 are provided with two or more and are respectively fixedly connected between the bottom plate 12 of the housing 1 and the upper fixed plate 21 of the upper mold mechanism 2. The middle mold plate 32 and the lower plate 34 are installed sequentially from top to bottom and are slidably connected to the mold frame guide pillars 31. The lower plate 33 is fixedly connected to the top surface of the bottom plate 12. The middle mold lifting drive device 35 and the lower plate 36 are respectively installed upward through the bottom surface of the bottom plate 12. The middle mold lifting drive device 35 passes through the bottom plate 12 and the lower plate 34 sequentially through the middle mold screw transmission assembly and is connected to the middle mold plate 32 to drive it to move up and down. The lower plate 36 passes through the bottom plate 12 through the lower plate 34 and is connected to the lower plate 34 to drive it to move up and down.

[0026] In order to make the operation of the middle template 32 and the lower second plate 34 more stable, the middle template lifting drive device 35 and the lower second lifting drive device 36 are both provided in pairs and are arranged diagonally on the base plate 12.

[0027] Specifically, the middle mold lifting drive device 35 can be configured as a middle mold lifting drive motor. The middle mold lead screw transmission assembly includes a middle mold lead screw 351, a middle mold lead screw bearing seat 352, and a middle mold lead screw sleeve 353. The middle mold lifting drive motor is installed facing upwards at the bottom of the base plate 12. The middle mold lead screw bearing seat 352 is embedded in the top surface of the base plate 12. The bottom end of the middle mold lead screw 351 is connected to the middle mold lifting drive motor and its top end passes through the lower second plate 34 and extends into the interior of the middle mold template 32. One end of the middle mold lead screw sleeve 353 passes through the lower second plate 34 and is fixedly connected to the bottom of the middle mold template 32. The middle mold lead screw 351 is rotatably connected to the middle mold lead screw bearing seat 352 and threadedly connected to the middle mold lead screw sleeve 353.

[0028] Furthermore, the lower two lifting drive device 36 can be configured as a lower two lifting drive motor. The lower two lead screw transmission assembly includes a lower two lead screw 361, a lower two lead screw bearing seat 362, and a lower two lead screw sleeve 363. The lower two lifting drive motor is installed facing upwards at the bottom of the base plate 12. The lower two lead screw bearing seat 362 is embedded in the top surface of the base plate 12. The bottom end of the lower two lead screw 361 is connected to the lower two lifting drive motor and its top end extends into the interior of the lower two plate 34. One end of the lower two lead screw sleeve 363 is fixedly connected to the bottom of the lower two plate 34. The lower two lead screw 361 is rotatably connected to the lower two lead screw bearing seat 362 and threadedly connected to the lower two lead screw sleeve 363.

[0029] In practice, the middle mold lifting drive motor can drive the middle mold lead screw 351 to rotate, thereby driving the middle mold nut sleeve 353 to move up and down, and then the middle mold plate 32 to move up and down; the lower two lifting drive motor can drive the lower two lead screw 361 to rotate, thereby driving the lower two plate 34 to move up and down.

[0030] like Figure 3 and Figure 4As shown, the lower mold mechanism 3 may also include a mandrel lifting drive assembly 37. The lower plate 33, lower second plate 34, and middle mold plate 32 each have mandrel through holes 370 for the output portion of the mandrel lifting drive assembly 37 to pass through. The mandrel lifting drive assembly 37 includes a mandrel electric cylinder 371, a mandrel guide rod 372, a mandrel fixing plate 373, a mandrel floating plate 374, a mandrel lead screw 375, a mandrel lead screw bearing seat 3751, a mandrel lead screw sleeve 3752, a mandrel cylinder cover 376, a mandrel piston 377, a mandrel mounting seat 378, and a mandrel locking block 379. The mandrel electric cylinder 371 is installed on one side of the mandrel fixing plate 373. The other side of the mandrel fixing plate 373 is fixedly connected to the bottom plate 12 via the mandrel guide rod 372 and is located in the middle position. The mandrel floating plate 374... The mandrel guide rod 372 is slidably connected to the mandrel guide rod 372. The mandrel screw bearing seat 3751 is embedded on the other side of the mandrel fixing plate 373. One end of the mandrel screw 375 is connected to the output part of the mandrel electric cylinder 371 and is rotatably connected to the mandrel screw bearing seat 3751. The bottom end of the mandrel screw sleeve 3752 is fixedly connected to the top of the mandrel floating plate 374. The other end of the mandrel screw 375 passes through the mandrel floating plate 374 and is threadedly connected to the mandrel screw sleeve 3752. The mandrel cylinder cover 376 is fixedly connected to the top of the mandrel screw sleeve 3752. The bottom of the mandrel piston 377 is movably inserted inside the mandrel cylinder cover 376 and the mandrel screw sleeve 3752. The mandrel mounting seat 378 is installed on the top of the mandrel piston 377. The mandrel locking block 379 is installed in conjunction with the mandrel mounting seat 378.

[0031] In practice, the mandrel is fixedly installed between the mandrel locking block 379 and the mandrel mounting base 378. The mandrel electric cylinder 371 can drive the mandrel screw 375 to rotate through the transmission assembly (gear + belt), thereby driving the mandrel screw sleeve 3752 and the mandrel floating plate 374 to move up and down. The mandrel can also control its entry and exit during the up and down movement of the mandrel piston 377. When extended, it is used for forming the center through hole of the powder molding product. The mandrel guide rod 372 provides connection and guidance for the installation of the mandrel electric cylinder 371 and the mandrel floating plate 374, making it more stable during the lifting process and ensuring the accuracy of the mandrel during the movement.

[0032] like Figure 5As shown, the upper mold mechanism 2 may include an upper lifting drive assembly 22, an upper second lifting drive assembly 23, an upper guide post 24, an upper guide plate 25, an upper second guide plate 26, an upper plate 27, an upper second plate 28, and an upper plate guide rod 271. The upper guide post 24 has two or more posts, which are respectively fixedly connected between the top plate 11 and the upper fixed plate 21. The upper first guide plate 25 and the upper second guide plate 26 are installed sequentially from top to bottom and are slidably connected to the upper guide post 24. The upper second lifting drive assembly 23 is installed on the top of the top plate 11, and the upper second lifting drive assembly 23 outputs... The part passes through the upper guide plate 25, the upper second guide plate 26 and the upper fixed plate 21 and is connected to the upper second plate 28 for transmission and drives it to move up and down. There are two upper lifting drive components 22 and they are installed at both ends of the upper guide plate 25. The upper lifting drive components 22 are respectively connected to the upper second guide plate 26 through their output parts. The upper plate guide rod 271 passes through the upper fixed plate 21 and the upper second plate 28 and is fixedly connected between the upper second guide plate 26 and the upper plate 27. The upper lifting drive components 22 can drive the upper second guide plate 26 and the upper plate 27 to move up and down at the same time.

[0033] like Figure 6 As shown, two through holes 110 can be opened on the top plate 11 for the upper lifting drive assembly 22 to pass through.

[0034] In this embodiment, the two upper lifting drive components 22 are installed on both sides of the upper guide plate 25, and are not all concentrated on the top plate 11. This helps to reduce the local stress on the top plate 11, avoids deformation of the box 1 due to stress concentration, and ensures the consistency of the alignment and gap between the upper mold mechanism 2 and the lower mold mechanism 3 during pressing, thereby improving the product forming accuracy.

[0035] Specifically, the upper lifting drive assembly 22 may include an upper lifting drive motor 221, an upper reducer 222, an upper lead screw 223, an upper lead screw bearing seat 224, and an upper nut sleeve 225. The upper lifting drive motor 221 is mounted on both sides of the upper guide plate 25 through the upper reducer 222. The upper lead screw bearing seats 224 are respectively fixedly mounted on both sides of the upper guide plate 25. The top of the upper lead screw 223 is respectively connected to the upper second lifting drive assembly 23 and rotatably connected to its corresponding upper lead screw bearing seat 224. The upper end of the upper nut sleeve 225 is respectively mounted on both sides of the upper second guide plate 26. The upper lead screw 223 is respectively vertically set and passes through the upper second guide plate 26 and is threadedly connected to the upper nut sleeve 225. The output part of the upper lifting drive motor 221 is connected to the top of the upper lead screw 223.

[0036] Furthermore, each of the two upper lifting drive components 23 may include an upper two lifting drive motor 231, an upper two lead screw 233, an upper two lead screw bearing seat 234, and an upper two nut sleeve 235. The upper two lifting drive motor 231 is fixedly installed on the top of the top plate 11. The upper two lead screw bearing seat 234 is embedded in the top plate 11. The top of the upper two lead screw 233 is rotatably connected to the upper two lead screw bearing seat 234. The upper end of the upper two nut sleeve 235 is fixedly installed on the upper guide plate 25. The upper two lead screw 233 is vertically arranged and threadedly connected to the upper two nut sleeve 235. The lower end of the upper two nut sleeve 235 passes through the upper two guide plate 26 and the upper fixed plate 21 and is connected to the top surface of the upper two plate 28 through a connector. The output part of the upper two lifting drive motor 231 is connected to the top end of the upper two lead screw 233.

[0037] To improve the stability and accuracy of pressing, the lower die mechanism 3 may also include four lower punch guide assemblies (see...). Figure 1 Each of the lower punch guide rail assemblies is vertically and liftably installed on the lower inner side of the housing 1 and located at the four corners of the middle template 32 and the lower second plate 34. Each lower punch guide rail assembly is connected to the diagonal part of its corresponding middle template 32 and lower second plate 34 in pairs.

[0038] Similarly, the upper die mechanism 2 may also include four upper punch guide rail assemblies (see...). Figure 1 Each upward punch guide rail is vertically set on the upper inner side of the housing 1 and located at the four corners of the upper plate 27 and the upper second plate 28. Each downward punch guide rail assembly is connected to the diagonal part of its corresponding upper plate 27 and upper second plate 28 in pairs.

[0039] like Figure 7 As shown, during operation, punches can be installed on the upper plate 28, upper second plate 27, middle plate 32 and lower second plate 34 of the press mold frame, respectively. The middle mold and middle mold slide can be installed on the top of the middle plate 32. The corresponding punches can be raised and lowered by the corresponding up and down lifting drive device to realize powder pressing and molding.

[0040] In summary, compared with the traditional method of connecting multiple transmission components such as guide rods and base plates, the lower mold mechanism of this utility model greatly simplifies its structural complexity, significantly reduces the height and volume of the press mold frame, facilitates assembly, and can also improve transmission efficiency and accuracy, reduce positioning errors, and provide stable and rapid response.

[0041] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A two-upper-two-lower direct-drive press mold frame structure, characterized in that: The system includes a housing (1), an upper mold mechanism (2), and a lower mold mechanism (3). The housing (1) has a top plate (11) and a bottom plate (12) at its upper and lower ends, respectively. The upper mold mechanism (2) is installed at the upper end of the housing (1), and the lower mold mechanism (3) is installed at the lower end of the housing (1) and located directly below the upper mold mechanism (2). The lower mold mechanism (3) includes a mold frame guide post (31), a middle mold plate (32), a lower bottom plate (33), a lower second plate (34), a middle mold lifting drive device (35), and a lower second lifting drive device (36). The mold frame guide post (31) has two or more posts and is fixedly connected to the bottom plate (12) of the housing (1) and the upper fixed plate (2) of the upper mold mechanism (2), respectively. Between 1), the middle template (32) and the lower two plates (34) are installed sequentially from top to bottom and are slidably connected to the mold frame guide column (31). The lower plate (33) is fixedly connected to the top surface of the base plate (12). The middle mold lifting drive device (35) and the lower two lifting drive device (36) are respectively installed upward through the bottom surface of the base plate (12). The middle mold lifting drive device (35) passes through the base plate (12) and the lower two plates (34) sequentially through the middle mold screw transmission assembly and is connected to the middle template (32) to drive it up and down. The lower two lifting drive device (36) passes through the base plate (12) through the lower two screw transmission assembly and is connected to the lower two plates (34) to drive it up and down.

2. The upper two-lower two direct-drive press mold frame structure according to claim 1, characterized in that: The intermediate mold lifting drive device (35) is configured as an intermediate mold lifting drive motor. The intermediate mold lead screw transmission assembly includes an intermediate mold lead screw (351), an intermediate mold lead screw bearing seat (352), and an intermediate mold lead screw sleeve (353). The intermediate mold lifting drive motor is installed facing upwards at the bottom of the base plate (12). The intermediate mold lead screw bearing seat (352) is embedded in the top surface of the base plate (12). The bottom end of the intermediate mold lead screw (351) is connected to the intermediate mold lifting drive motor for transmission and... Its top end passes through the lower two plates (34) and extends into the interior of the middle template (32). One end of the middle template screw sleeve (353) passes through the lower two plates (34) and is fixedly connected to the bottom of the middle template (32). The middle template screw (351) is rotatably connected to the middle template screw bearing seat (352) and threadedly connected to the middle template screw sleeve (353). The middle template lifting drive motor can drive the middle template screw (351) to rotate, thereby driving the middle template (32) to move up and down.

3. The upper two-lower two direct-drive press mold frame structure according to claim 1, characterized in that: The lower two lifting drive device (36) is configured as a lower two lifting drive motor. The lower two lead screw transmission assembly includes a lower two lead screw (361), a lower two lead screw bearing seat (362), and a lower two lead screw sleeve (363). The lower two lifting drive motor is installed facing upward at the bottom of the base plate (12). The lower two lead screw bearing seat (362) is embedded in the top surface of the base plate (12). The bottom end of the lower two lead screw (361) is connected to the lower two lifting drive motor and its top end extends into the interior of the lower two plate (34). One end of the lower two lead screw sleeve (363) is fixedly connected to the bottom of the lower two plate (34). The lower two lead screw (361) is rotatably connected to the lower two lead screw bearing seat (362) and threadedly connected to the lower two lead screw sleeve (363). The lower two lifting drive motor can drive the lower two lead screw (361) to rotate, thereby driving the lower two plate (34) to move up and down.

4. The upper two-lower two direct-drive press mold frame structure according to claim 1, characterized in that: The lower mold mechanism (3) further includes a mandrel lifting drive assembly (37). The lower plate (33), the lower second plate (34), and the middle mold plate (32) each have mandrel through holes (370) through which the output part of the mandrel lifting drive assembly (37) passes. The mandrel lifting drive assembly (37) includes a mandrel electric cylinder (371), a mandrel guide rod (372), a mandrel fixing plate (373), a mandrel floating plate (374), and a mandrel lead screw (375). The mandrel bearing housing (3751), mandrel sleeve (3752), mandrel cylinder cover (376), mandrel piston (377), mandrel mounting base (378), and mandrel locking block (379) are provided. The mandrel electric cylinder (371) is installed on one side of the mandrel fixing plate (373), and the other side of the mandrel fixing plate (373) is fixedly connected to the bottom plate (12) below by the mandrel guide rod (372). The mandrel floating plate (374) is connected to the mandrel. The guide rod (372) is slidably connected, and the mandrel screw bearing seat (3751) is embedded on the other side of the mandrel fixing plate (373). One end of the mandrel screw (375) is connected to the output part of the mandrel electric cylinder (371) and rotatedly connected to the mandrel screw bearing seat (3751). The bottom end of the mandrel screw sleeve (3752) is fixedly connected to the top of the mandrel floating plate (374). The other end of the mandrel screw (375) passes through the mandrel floating plate. (374) is then threadedly connected to the mandrel sleeve (3752). The mandrel cylinder cover (376) is fixedly connected to the top of the mandrel sleeve (3752). The bottom of the mandrel piston (377) is movably inserted inside the mandrel cylinder cover (376) and the mandrel sleeve (3752). The mandrel mounting seat (378) is installed on the top of the mandrel piston (377). The mandrel locking block (379) is fitted with the mandrel mounting seat (378).

5. The upper two-lower two direct-drive press mold frame structure according to claim 1, characterized in that: The upper mold mechanism (2) includes an upper lifting drive assembly (22), an upper second lifting drive assembly (23), an upper guide column (24), an upper guide plate (25), an upper second guide plate (26), an upper plate (27), an upper second plate (28), and an upper plate guide rod (271). The upper guide column (24) has two or more columns and is fixedly connected between the top plate (11) and the upper fixed plate (21). The upper first guide plate (25) and the upper second guide plate (26) are installed sequentially from top to bottom and are slidably connected to the upper guide column (24). The upper second plate (28) and the upper first plate (27) are installed sequentially from top to bottom and are slidably connected to the mold frame guide column (31). The upper second lifting drive assembly (23) is installed on the top of the top plate (11). The upper second lifting drive assembly (23) passes through the upper guide plate (25), the upper second guide plate (26) and the upper fixed plate (21) through its output part and is connected to the upper second plate (28) and drives it to move up and down. The upper lifting drive assembly (22) is provided in two and installed at both ends of the upper guide plate (25). The upper lifting drive assembly (22) is connected to the upper second guide plate (26) through its output part. The upper plate guide rod (271) passes through the upper fixed plate (21) and the upper second plate (28) and is fixedly connected between the upper second guide plate (26) and the upper plate (27). The upper lifting drive assembly (22) can drive the upper second guide plate (26) and the upper plate (27) to move up and down at the same time.

6. The upper two-lower two-direct-drive press mold frame structure according to claim 5, characterized in that: The top plate (11) has two through holes (110) for the upper lifting drive assembly (22) to pass through.

7. The upper two-lower two direct-drive press mold frame structure according to claim 5, characterized in that: The upper lifting drive assembly (22) includes an upper lifting drive motor (221), an upper reducer (222), an upper lead screw (223), an upper lead screw bearing seat (224), and an upper nut sleeve (225). The upper lifting drive motor (221) is mounted on both sides of the upper guide plate (25) via the upper reducer (222). The upper lead screw bearing seat (224) is fixedly mounted on both sides of the upper guide plate (25). The upper lead screw (223)... The top of each is connected to the upper two lifting drive components (23) and rotatedly connected to their respective upper lead screw bearing seats (224). The upper end of the upper nut sleeve (225) is installed on both sides of the upper two guide plates (26). The upper lead screws (223) are vertically set and pass through the upper two guide plates (26) and are threadedly connected to the upper nut sleeves (225). The output part of the upper lifting drive motor (221) is connected to the top of the upper lead screw (223).

8. The upper two-lower two direct-drive press mold frame structure according to claim 5, characterized in that: Each of the two upper lifting drive assemblies (23) includes an upper two lifting drive motor (231), an upper two lead screw (233), an upper two lead screw bearing seat (234), and an upper two nut sleeve (235). The upper two lifting drive motor (231) is fixedly installed on the top of the top plate (11). The upper two lead screw bearing seat (234) is embedded in the top plate (11). The top of the upper two lead screw (233) is rotatably connected to the upper two lead screw bearing seat (234). The upper end of the nut sleeve (235) is fixedly installed on the upper guide plate (25). The upper two lead screws (233) are vertically arranged and threadedly connected to the upper two nut sleeves (235). The lower end of the upper two nut sleeves (235) passes through the upper two guide plates (26) and the upper fixed plate (21) and is connected to the top surface of the upper two plates (28) through a connector. The output part of the upper two lifting drive motors (231) is connected to the top end of the upper two lead screws (233) for transmission.

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