A punching device suitable for producing soles of safety shoes of different sizes

Abstract

The present invention relates to the technical field of safety shoe production, and in particular to a punching and shearing device suitable for producing safety shoe soles of different sizes, comprising a punching and shearing machine, an upper mold fixing seat is arranged on the top of the punching and shearing machine, an electric hydraulic rod is arranged inside the upper mold fixing seat, a punching and shearing die for cutting the safety shoe sole is arranged on the telescopic end of the electric hydraulic rod, a rotating device for switching the punching and shearing die is arranged on the side of the punching and shearing machine, and a self-locking device for fixing the punching and shearing die is arranged between the rotating device and the punching and shearing die. The present invention cooperates with structures such as the rotating device, the self-locking device, the punching and shearing die, the transmission plate, the driving rod, the rotating plate, the extension rod and the adjusting mechanism, so that the self-locking device drives the punching and shearing die to move out from the bottom of the upper mold fixing seat and then switch to another punching and shearing die of a different size, so that multiple punching and shearing dies of different sizes can be quickly switched, which greatly shortens the downtime and improves the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of safety shoe production, in particular to a punching device suitable for producing soles of safety shoes with different sizes. Background Art

[0002] Safety shoes are a general term for safety shoes and protective shoes. They refer to shoes worn in different workplaces that protect the feet and legs from foreseeable injuries. The toe of a safety shoe can protect the foot from being hit by falling heavy objects. In order to ensure the structural strength of the toe, the thickness of the toe is generally thicker. Connectors are required to make a transition connection between the toe and the italic. When the sole of a safety shoe is produced, the sole raw material needs to be punched out by punching equipment.

[0003] Although the existing punching equipment for producing safety shoe soles can quickly replace the knife die to complete the cutting of safety shoe soles of different shapes and sizes, when replacing the knife die, the staff has to shut down the punching equipment for a long time to replace the knife die. In addition, the knife die of the existing safety shoe soles is heavy, and after the replacement is completed, a long debugging time is required, which increases the downtime and reduces the work efficiency. Therefore, we propose a punching equipment suitable for the production of safety shoe soles of different sizes. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a punching device suitable for producing soles of safety shoes of different sizes.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A punching device suitable for producing soles of safety shoes of different sizes, comprising:

[0007] A punching machine, wherein an upper mold fixing seat is arranged on the top of the punching machine, an electric hydraulic rod is arranged inside the upper mold fixing seat, and a punching die for cutting the sole of the safety shoe is arranged on the telescopic end of the electric hydraulic rod;

[0008] A rotating device for switching the punching and cutting dies is arranged on the side of the punching and cutting machine, and a self-locking device for fixing the punching and cutting dies is arranged between the rotating device and the punching and cutting dies;

[0009] The rotation device includes a motor fixing seat fixed on the side of the punching machine, a motor is fixed in the middle of the motor fixing seat, a transmission disc is fixed at the output end of the motor, a rotatable rotation disc is also arranged on the top of the motor fixing seat, a plurality of extension rods are arranged on the rotation disc, and an adjustment mechanism is arranged between the rotation disc and the transmission disc, and one end of the extension rod away from the rotation disc is connected to the self-locking device;

[0010] The adjusting mechanism comprises a positioning plate fixed on the top of the transmission plate, a groove matched with the rotation plate is arranged on one side of the positioning plate, a protrusion is fixed on the outer wall of the transmission plate, a driving rod is fixed on the protrusion, a plurality of slide grooves matched with the driving rod are opened on the rotation plate, and a plurality of circular grooves matched with the positioning plate are opened on the rotation plate. The transmission plate is driven to rotate by the output shaft of the motor, and the transmission plate drives the driving rod to rotate, so that the driving rod moves into the slide groove, and the driving rod cooperates with the slide groove to make the driving rod drive the rotation plate to rotate, so that the rotation plate rotates intermittently, so that a plurality of self-locking devices can be switched, and then a plurality of punching dies can be cut.

[0011] As a preferred technical solution of the present invention, the self-locking device includes a mold positioning plate fixed on the punching machine and two main mounting plates fixed on the punching die, and a pressure column is also fixed on the top of the punching die, a detachable lower mold is arranged above the mold positioning plate, a sole storage groove is arranged in the middle of the lower mold, and two positioning sleeves are symmetrically fixed on the top of the lower mold, two insertion rods are fixed at one end of the two main mounting plates away from the punching die, and slots matching the two insertion rods are opened on the two positioning sleeves, the punching die is arranged directly above the sole storage groove, and the pressure column is arranged directly below the output end of the electric hydraulic rod.

[0012] As a preferred technical solution of the present invention, two auxiliary mounting plates are symmetrically fixed to the outer wall of the punching die, two self-locking rods are arranged in the middle of the two auxiliary mounting plates, two support arms are arranged between the two self-locking rods and the pressure columns, and a clamping mechanism is arranged between the two self-locking rods and the two support arms.

[0013] As a preferred technical solution of the present invention, the clamping mechanism includes a fixed sleeve fixed to the end of the support arm away from the pressure column and a self-locking block arranged at the top of the self-locking rod, a locking sleeve is fixed to the bottom of the fixed sleeve, and a plurality of retractable telescopic blocks are arranged inside the locking sleeve. The self-locking block is in the shape of a hemisphere, and a through hole adapted to the self-locking rod is arranged in the middle of the locking sleeve. After the self-locking block is inserted into the through hole, it contacts one end of the telescopic block, and an inclined surface is arranged at the end of the telescopic block that contacts the self-locking block. The telescopic block contacts along the outer wall of the self-locking block, and the telescopic block moves to the bottom of the self-locking block and cooperates with the inclined surface, so that the telescopic block limits the self-locking block.

[0014] As a preferred technical solution of the present invention, a clamping rod is fixed on the top of the self-locking rod, the top of the clamping rod is fixed to the bottom of the self-locking block, and the outer wall of the clamping rod is also sleeved with a disc-shaped unlocking disk, and the telescopic block is arranged on an inclined surface that cooperates with the unlocking disk, so that the telescopic block can move between the unlocking disk and the self-locking rod, and then the unlocking disk moves between the self-locking block and the telescopic block.

[0015] As a preferred technical solution of the present invention, the inner wall of the lock sleeve is provided with a plurality of lock grooves adapted to the telescopic block, a spring is arranged between the telescopic block and the lock groove, and limit blocks are fixed to the top and bottom of the telescopic block, and the lock groove is provided with limit grooves adapted to the limit blocks, the bottom of the self-locking rod passes through the auxiliary mounting plate and is fixed with an adjustment plate, and a plurality of support columns are arranged between the adjustment plate and the auxiliary mounting plate.

[0016] As a preferred technical solution of the present invention, a limiting frame is fixed at one end of the extension rod away from the rotation disk, and the side of the limiting frame away from the extension rod is recessed inward to form a placement cavity, a connecting rod is arranged inside the placement cavity, and a fixing rod is sleeved on the outer wall of the connecting rod, the height of the fixing rod is smaller than the height of the placement cavity, and the end of the fixing rod away from the connecting rod is fixed to the side surface of the lower mold.

[0017] As a preferred technical solution of the present invention, a plurality of transmission balls are fixed to the bottom of the lower mold, and a plurality of slots matched with the transmission balls are provided on the top of the mold positioning plate. The cooperation between the plurality of transmission balls and the slots facilitates the positioning of the lower mold, and the plurality of transmission balls can also facilitate the movement of the lower mold on the mold positioning plate.

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

[0019] 1. Through the cooperation of the rotating device, the self-locking device, the punching die, the transmission plate, the driving rod, the rotating plate, the extension rod and the adjusting mechanism, the self-locking device drives the punching die to move out from the bottom of the upper die fixing seat and then switch to another punching die of different sizes. Then, the punching parameters of the soles of safety shoes of different sizes are switched through the punching machine, which reduces the time for adjusting the machine, so that multiple punching dies of different sizes can be quickly switched, which greatly shortens the downtime and improves the work efficiency.

[0020] 2. After the punching die is separated from the positioning sleeve, the punching die is separated from the lower die through the self-locking device, the punching die, the self-locking rod, the locking sleeve, the clamping rod, the unlocking disk, the self-locking block, the telescopic block and the clamping mechanism, so that the punching die is separated from the lower die, so that the lower die and the punching die are separated into two parts, which is not only convenient for the subsequent transportation of the workers, but also simple in installation, further improving the convenience of the device.

[0021] 3. When the lower mold is moved to the bottom of the upper mold fixing seat by the fixing rod, pull the fixing rod upward to make the fixing rod move upward along the outer wall of the connecting rod, so that the fixing rod drives the lower mold to move upward to the top of the mold positioning plate, so as to avoid the bottom of the lower mold from contacting the top of the mold positioning plate when switching the lower mold, causing wear of the lower mold or the mold positioning plate, thereby increasing the service life of the device.

[0022] 4. The transmission ball moves along the top of the mold positioning plate, so that the transmission ball drives the lower mold and the mold positioning plate to generate a gap. After the transmission ball moves to the inside of the slot, the mold positioning plate limits the lower mold, and the mold positioning plate positions the lower mold to avoid the lower mold from deviating and causing damage to the sole of the safety shoe or the punching die, thereby further improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the punching and cutting machine of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the self-locking device of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the main mounting plate of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the self-locking rod of the present invention;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the lock sleeve of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the unlocking disk of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the rotation device of the present invention;

[0031] Fig. 9 It is a structural schematic diagram of the extension rod of the present invention;

[0032] Fig.10 It is a structural schematic diagram of the mold positioning plate of the present invention;

[0033] Fig.11 For the present invention Figure 6 Schematic diagram of the local enlarged structure at point A in the middle.

[0034] Wherein: 1. punching machine; 2. upper mold fixing seat; 3. rotation device; 4. self-locking device; 5. electric hydraulic rod; 6. punching die; 301. motor fixing seat; 302. motor; 303. transmission plate; 304. positioning plate; 305. driving rod; 306. rotation plate; 307. extension rod; 308. limit frame; 401. mold positioning plate; 402. lower mold; 403. pressure column; 404. positioning sleeve; 405. main mounting plate; 406. auxiliary mounting plate; 407. self-locking rod; 408. locking sleeve; 409. fixing sleeve; 410. support column; 411. adjustment plate; 412. clamping rod; 413. unlocking disk; 414. self-locking block; 415. telescopic block; 416. spring; 417. support arm. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0036] Embodiment: The present invention provides as Figure 1 and Figure 2 The punching equipment shown is suitable for producing soles of safety shoes of different sizes, comprising:

[0037] The punching machine 1 has an upper mold fixing seat 2 on the top, an electric hydraulic rod 5 is arranged inside the upper mold fixing seat 2, and a punching die 6 for cutting the sole of the safety shoe is arranged on the telescopic end of the electric hydraulic rod 5.

[0038] As can be seen from the above, when in use, the safety shoe sole to be punched is placed between the punching machine 1 and the upper mold fixing seat 2, and then the punching die 6 is placed directly above the safety shoe sole. The punching die 6 is pushed downward by the telescopic end of the electric hydraulic rod 5, so that the punching die 6 punches the safety shoe sole.

[0039] refer to Figure 1 , Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, a rotating device 3 for switching the punching and cutting die 6 is provided on the side of the punching and cutting machine 1, and a self-locking device 4 for fixing the punching and cutting die 6 is provided between the rotating device 3 and the punching and cutting die 6;

[0040] The rotation device 3 includes a motor fixing seat 301 fixed on the side of the punching machine 1, a motor 302 is fixed in the middle of the motor fixing seat 301, a transmission disc 303 is fixed at the output end of the motor 302, a rotatable rotation disc 306 is also arranged on the top of the motor fixing seat 301, a plurality of extension rods 307 are arranged on the rotation disc 306, and an adjustment mechanism is arranged between the rotation disc 306 and the transmission disc 303, and an end of the extension rod 307 away from the rotation disc 306 is connected to the self-locking device 4;

[0041] The adjusting mechanism comprises a positioning plate 304 fixed on the top of the transmission plate 303, a groove matched with the rotation plate 306 is arranged on one side of the positioning plate 304, a protrusion is fixed on the outer wall of the transmission plate 303, a driving rod 305 is fixed on the protrusion, a plurality of slide grooves matched with the driving rod 305 are provided on the rotation plate 306, and a plurality of circular grooves matched with the positioning plate 304 are also provided on the rotation plate 306, the transmission plate 303 is driven to rotate by the output shaft of the motor 302, the transmission plate 303 drives the driving rod 305 to rotate, so that the driving rod 305 moves into the slide groove, and the driving rod 305 cooperates with the slide groove, so that the driving rod 305 drives the rotation plate 306 to rotate, so that the rotation plate 306 rotates intermittently, so that a plurality of self-locking devices 4 can be switched, and then a plurality of punching dies 6 can be cut.

[0042] By adopting the above technical solution:

[0043] During use, when the punching and cutting die 6 needs to be replaced, the output shaft of the motor 302 drives the transmission plate 303 to rotate, and the transmission plate 303 drives the driving rod 305 to rotate through the protrusion, so that the driving rod 305 moves into the slide groove of the rotation plate 306, and the rotation plate 306 drives the rotation plate 306 to rotate through the cooperation between the driving rod 305 and the slide groove, so that the rotation plate 306 rotates intermittently, and the rotation plate 306 drives the self-locking device 4 to rotate through the extension rod 307, so that the self-locking device 4 drives the punching and cutting die 6 to move out from the bottom of the upper mold fixing seat 2 and switch to another punching and cutting die 6 of different size, and then the punching parameters of the soles of safety shoes of different sizes are switched through the punching machine 1, thereby reducing the time of adjusting the machine, so that a plurality of punching and cutting dies 6 of different sizes can be quickly switched, which greatly shortens the downtime and improves the work efficiency.

[0044] Secondly, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig.11As shown, the self-locking device 4 includes a mold positioning plate 401 fixed on the punching machine 1 and two main mounting plates 405 fixed on the punching die 6, and a pressure column 403 is also fixed on the top of the punching die 6, a detachable lower mold 402 is arranged above the mold positioning plate 401, a sole storage groove is arranged in the middle of the lower mold 402, and two positioning sleeves 404 are symmetrically fixed to the top of the lower mold 402, two insertion rods are fixed to the ends of the two main mounting plates 405 away from the punching die 6, and slots compatible with the two insertion rods are opened on the two positioning sleeves 404, the punching die 6 is arranged directly above the sole storage groove, and the pressure column 403 is arranged directly below the output end of the electric hydraulic rod 5.

[0045] Two auxiliary mounting plates 406 are also symmetrically fixed to the outer wall of the punching die 6. Two self-locking rods 407 are arranged in the middle of the two auxiliary mounting plates 406. Two support arms 417 are arranged between the two self-locking rods 407 and the pressure column 403, and a clamping mechanism is arranged between the two self-locking rods 407 and the two support arms 417.

[0046] The clamping mechanism includes a fixing sleeve 409 fixed to the end of the support arm 417 away from the pressure column 403 and a self-locking block 414 arranged at the top of the self-locking rod 407. A locking sleeve 408 is fixed to the bottom of the fixing sleeve 409. A plurality of retractable retractable blocks 415 are arranged inside the locking sleeve 408. The self-locking block 414 is in the shape of a hemisphere. A through hole adapted to the self-locking rod 407 is arranged in the middle of the locking sleeve 408. After the self-locking block 414 is inserted into the through hole, it contacts one end of the retractable block 415. An inclined surface is arranged on the end of the retractable block 415 that contacts the self-locking block 414. The retractable block 415 contacts the outer wall of the self-locking block 414, so that the retractable block 415 moves to the bottom of the self-locking block 414 and cooperates with the inclined surface, so that the retractable block 415 limits the self-locking block 414.

[0047] A locking rod 412 is fixed to the top of the self-locking rod 407, and the top of the locking rod 412 is fixed to the bottom of the self-locking block 414, and the outer wall of the locking rod 412 is also provided with a disc-shaped unlocking disk 413, and the telescopic block 415 is arranged on an inclined surface that cooperates with the unlocking disk 413, so that the telescopic block 415 can move between the unlocking disk 413 and the self-locking rod 407, and then the unlocking disk 413 moves between the self-locking block 414 and the telescopic block 415.

[0048] The inner wall of the lock sleeve 408 is provided with a plurality of lock grooves matched with the telescopic block 415, a spring 416 is arranged between the telescopic block 415 and the lock groove, and limit blocks are fixed on the top and bottom of the telescopic block 415, and a limit groove matched with the limit block is arranged on the lock groove, and the bottom of the self-locking rod 407 passes through the auxiliary mounting plate 406 and is fixed with an adjustment plate 411, and a plurality of support columns 410 are arranged between the adjustment plate 411 and the auxiliary mounting plate 406.

[0049] By adopting the above technical solution:

[0050] When in use, when the punching and cutting die 6 needs to be replaced, the adjusting plate 411 is pushed upward, and the adjusting plate 411 drives the self-locking rod 407 to move upward, so that the self-locking rod 407 drives the self-locking block 414 to move upward through the clamping rod 412, and the self-locking block 414 pushes the telescopic block 415 to move into the lock groove of the lock sleeve 408, so that the telescopic block 415 moves to the bottom of the unlocking disk 413, so that the unlocking disk 413 is located between the telescopic block 415 and the self-locking block 414, and then the adjusting plate 411 is pulled downward, and the adjusting plate 411 drives the self-locking rod 407 to move downward, so that the self-locking rod 407 drives the self-locking block 414 to move downward through the clamping rod 412, and the self-locking block 414 pushes the telescopic block 415 to move into the lock groove of the lock sleeve 408. The locking disk 413 limits the telescopic block 415, so that the end of the telescopic block 415 with the inclined surface slides across the unlocking disk 413 and moves to the spherical surface of the self-locking block 414, so that the self-locking block 414 moves to the outside of the locking sleeve 408, so that the self-locking block 414 is separated from the locking sleeve 408, and then the punching die 6 is pushed upward, so that the punching die 6 drives the insertion rod upward through the main mounting plate 405, and after the punching die 6 is separated from the positioning sleeve 404, the punching die 6 is separated from the lower mold 402, so that the lower mold 402 and the punching die 6 are separated into two parts, which is not only convenient for the workers' subsequent transportation, but also simple in installation, further improving the convenience of the device.

[0051] Again, reference Figure 8 and Fig. 9 As shown, a limiting frame 308 is fixed at one end of the extension rod 307 away from the rotation disk 306, and the side of the limiting frame 308 away from the extension rod 307 is recessed inward to form a placement cavity, a connecting rod is arranged inside the placement cavity, and a fixing rod is sleeved on the outer wall of the connecting rod. The height of the fixing rod is less than the height of the placement cavity, and the end of the fixing rod away from the connecting rod is fixed to the side of the lower mold 402.

[0052] By adopting the above technical solution:

[0053] During use, when the extension rod 307 drives the lower mold 402 to move to the bottom of the upper mold fixing seat 2 through the fixed rod, the fixed rod is pulled upward to make the fixed rod move upward along the outer wall of the connecting rod, so that the fixed rod drives the lower mold 402 to move upward to the top of the mold positioning plate 401, thereby avoiding the bottom of the lower mold 402 from contacting the top of the mold positioning plate 401 when switching the lower mold 402, causing wear of the lower mold 402 or the mold positioning plate 401, thereby increasing the service life of the device.

[0054] Finally, reference Fig.10As shown, a plurality of transmission balls are fixed to the bottom of the lower mold 402, and a plurality of slots matched with the transmission balls are provided on the top of the mold positioning plate 401. The cooperation between the plurality of transmission balls and the slots facilitates the positioning of the lower mold 402, and the plurality of transmission balls can also facilitate the movement of the lower mold 402 on the mold positioning plate 401.

[0055] By adopting the above technical solution:

[0056] During use, when the lower mold 402 is connected to the mold positioning plate 401, the transmission ball moves along the top of the mold positioning plate 401, so that the transmission ball drives the lower mold 402 and the mold positioning plate 401 to generate a gap, and after the transmission ball moves to the inside of the slot, the mold positioning plate 401 limits the lower mold 402, so that the mold positioning plate 401 positions the lower mold 402, so as to avoid the lower mold 402 from deviating and causing damage to the sole of the safety shoe or the punching die 6, thereby further improving the safety of the device.

[0057] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A punching device suitable for producing soles of safety shoes of different sizes, characterized in that: include: A punching machine (1), wherein an upper mold fixing seat (2) is arranged on the top of the punching machine (1), an electric hydraulic rod (5) is arranged inside the upper mold fixing seat (2), and a punching die (6) for cutting the sole of the safety shoe is arranged on the telescopic end of the electric hydraulic rod (5); A rotating device (3) for switching the punching and cutting die (6) is arranged on the side of the punching and cutting machine (1), and a self-locking device (4) for fixing the punching and cutting die (6) is arranged between the rotating device (3) and the punching and cutting die (6); The rotation device (3) comprises a motor fixing seat (301) fixed to the side of the punching machine (1), a motor (302) being fixed in the middle of the motor fixing seat (301), a transmission disc (303) being fixed at the output end of the motor (302), a rotatable rotation disc (306) being provided at the top of the motor fixing seat (301), a plurality of extension rods (307) being provided on the rotation disc (306), an adjustment mechanism being provided between the rotation disc (306) and the transmission disc (303), and an end of the extension rod (307) away from the rotation disc (306) being connected to the self-locking device (4); The adjustment mechanism comprises a positioning plate (304) fixed on the top of the transmission plate (303); a groove matching the rotation plate (306) is provided on one side of the positioning plate (304); a protrusion is fixed on the outer wall of the transmission plate (303); a driving rod (305) is fixed on the protrusion; a plurality of sliding grooves matching the driving rod (305) are provided on the rotation plate (306); and a plurality of circular grooves matching the positioning plate (304) are also provided on the rotation plate (306); The self-locking device (4) comprises a mold positioning plate (401) fixed on the punching machine (1) and two main mounting plates (405) fixed on the punching die (6), and a pressure column (403) is also fixed on the top of the punching die (6), a detachable lower mold (402) is arranged above the mold positioning plate (401), a sole storage groove is arranged in the middle of the lower mold (402), and two positioning sleeves (404) are symmetrically fixed on the top of the lower mold (402), two insertion rods are fixed on the ends of the two main mounting plates (405) away from the punching die (6), and slots matching the two insertion rods are opened on the two positioning sleeves (404); Two auxiliary mounting plates (406) are symmetrically fixed to the outer wall of the punching die (6); two self-locking rods (407) are arranged in the middle of the two auxiliary mounting plates (406); two support arms (417) are arranged between the two self-locking rods (407) and the pressure column (403); and a clamping mechanism is arranged between the two self-locking rods (407) and the two support arms (417); The clamping mechanism comprises a fixing sleeve (409) fixed to an end of the support arm (417) away from the pressure column (403) and a self-locking block (414) arranged on the top of the self-locking rod (407); a locking sleeve (408) is fixed to the bottom of the fixing sleeve (409); and a plurality of retractable retractable blocks (415) are arranged inside the locking sleeve (408); A clamping rod (412) is fixed to the top of the self-locking rod (407), the top of the clamping rod (412) is fixed to the bottom of the self-locking block (414), and a disc-shaped unlocking plate (413) is sleeved on the outer wall of the clamping rod (412); The inner wall of the lock sleeve (408) is provided with a plurality of lock slots matched with the telescopic block (415), a spring (416) is arranged between the telescopic block (415) and the lock slot, and limit blocks are fixed at the top and bottom of the telescopic block (415), and the lock slot is provided with limit slots matched with the limit blocks, the bottom of the self-locking rod (407) passes through the auxiliary mounting plate (406) and is fixed with an adjustment plate (411), and a plurality of support columns (410) are arranged between the adjustment plate (411) and the auxiliary mounting plate (406).

2. The punching equipment for producing soles of safety shoes of different sizes according to claim 1 is characterized in that: A limiting frame (308) is fixed to one end of the extension rod (307) away from the rotation disk (306), and a side of the limiting frame (308) away from the extension rod (307) is recessed inwards to form a placement cavity, a connecting rod is arranged inside the placement cavity, and a fixing rod is sleeved on the outer wall of the connecting rod.

3. The punching equipment for producing soles of safety shoes of different sizes according to claim 1, characterized in that: A plurality of transmission balls are fixed to the bottom of the lower mold (402), and a plurality of slots adapted to the transmission balls are provided on the top of the mold positioning plate (401).

Images