Efficient turbine single-punch tablet press and tablet pressing method thereof

Abstract

The invention relates to the technical field of tablet presses, and discloses an efficient turbine single-punch tablet press and a tabletting method thereof.The efficient turbine single-punch tablet press comprises a shell, a frame is fixedly mounted in the shell, a driving assembly is arranged on one side of the frame, a feeding hopper is slidably mounted in the frame, a feeding pipe is fixedly connected to the top of the feeding hopper, and a sealing assembly is arranged at the bottom of the feeding hopper; an electric push rod is fixedly connected into the shell, the output end of the electric push rod is fixedly connected with a first connecting rod, and the lower end of the first connecting rod is fixedly connected with a first connecting block and connected with a mold through the first connecting block. The feeding pipe is connected for feeding, raw material powder enters the feeding hopper, the first connecting rod drives the second connecting rod to enable the ejection column to eject a product out of the shell, the effects of automatic feeding through a worm gear system and automatic ejection and discharging after stamping are achieved, and the problems that during feeding, manual feeding is needed by an operator, and the production efficiency is high are solved. And the problem that materials formed by stamping cannot be automatically discharged is solved, and the machining efficiency of the tablet press is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tablet presses, and in particular to a high-efficiency turbine single-punch tablet press and a tablet pressing method thereof. Background Art

[0002] Tablet press is a device that presses powder or granular materials into tablets or other shapes. It is widely used in pharmaceutical, fertilizer, food and other industries. In the pharmaceutical field, tablet presses can be used to press drug powder into tablets to ensure accurate dosage and easy to carry and take; in the food industry, tablet presses can be used to press powdered raw materials into compressed tablets or candies; in the fertilizer industry, tablet presses can press fertilizer powder into granules for easy storage and transportation. The equipment presses the raw materials into tablets, tablets or other required shapes through molds and pressure, and usually includes multiple functional modules, such as feeding, pressing, demolding and other modules to complete the entire tableting process. In order to make the power transmission of the tableting process more stable and effective, and improve the quality and efficiency of tablet forming, it is necessary to use a high-efficiency turbine single-punch tablet press.

[0003] Existing tablet press equipment has certain limitations in terms of automation, especially in the loading and unloading links. During the production process, operators are often required to manually add raw materials to the feeding device. This process is not only time-consuming and labor-intensive, but also prone to leakage and waste of raw materials, affecting the cleanliness of the production environment. In addition, tablets formed by tableting usually need to be unloaded manually or transported through additional equipment, which further increases labor costs and operational complexity. With the development of industrial automation, more and more companies have put forward demands for efficient and automated tablet press equipment to achieve full-process automation from feeding, pressing to unloading, reduce manual intervention, and improve production efficiency.

[0004] After searching, a tablet press is disclosed in the patent with the announcement number CN107553964B, and its structural design has been improved for some links in the tablet pressing process. The tablet press includes a punching plate, a machine body, a filling bracket, a lifting mechanism and a load-reducing cylinder. Specifically, the punching plate in the patent is provided with a lower punch rod, and the machine body located below the punching plate is installed with a filling bracket, a lifting mechanism and a load-reducing cylinder. The filling bracket is provided with a filling guide rail for contacting the lower punch rod, and the filling bracket is installed on the machine body through the lifting mechanism and can move up and down relative to the machine body; the load-reducing cylinder includes a cylinder body and a piston rod, and the piston of the piston rod divides the cylinder body into a rod chamber and a rodless chamber, and the hydraulic system controls the lifting and lowering movement of the piston rod. Through this structural design, the patent effectively solves the problem of low efficiency when manually adjusting the load reduction, and reduces the consumption of labor.

[0005] However, the improvement is limited to the automation of load reduction adjustment, and the automation problem of feeding and unloading has not been solved. In actual production, operators still need to manually feed, and the tablets formed after tableting cannot be automatically unloaded. This manual operation not only increases the complexity of the operation, but also easily causes powder leakage, environmental pollution and reduced efficiency. In addition, during long-term high-intensity production, manual feeding and unloading are prone to errors or delays, further affecting product quality and production continuity. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a high-efficiency turbine single-punch tablet press and a tablet pressing method thereof, which solves the problem that an operator needs to manually add materials when loading and the materials formed by punching cannot be automatically unloaded.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency turbine single-punch tablet press, comprising a housing, a frame fixedly installed in the housing, a driving assembly provided on one side of the frame, a feeding hopper slidably installed inside the frame, a feeding pipe fixedly connected to the top of the feeding hopper, and a sealing assembly provided at the bottom; An electric push rod is fixedly connected inside the shell, and its output end is fixedly connected to the connecting rod 1. The lower end of the connecting rod 1 is fixedly connected to the connecting block 1 and is connected to the mold through the connecting block 1. A reset component and a top column fixedly connected to the inside of the shell are provided inside the shell. The outer wall of the top column is fixedly connected to the connecting rod 2 and is embedded with the connecting rod 1. The driving assembly includes a motor installed on one side of the frame, the output end of the motor is fixedly connected to a connecting worm 1, one side of the frame is rotatably connected to a worm wheel 1, the worm wheel 1 is meshed with the worm 1, and a connecting rod 1 is fixedly connected to the top of the worm wheel 1, the connecting rod 1 is connected to a connecting rod 2 through a rotating shaft at one end, and the other end of the connecting rod 2 is rotatably connected to the top of the feeding hopper.

[0008] Preferably, the sealing assembly comprises a sealing ring installed inside the feeding hopper, and a groove for accommodating the sealing ring is provided inside the feeding hopper, and the sealing ring is embedded in the groove.

[0009] Preferably, the reset assembly includes a limit column, both ends of which are fixedly connected to the inside of the shell, a cross plate is slidably connected to the outer wall of the limit column, the cross plate is fixedly connected to the outer wall of the top column, the outer wall of the limit column is sleeved with a first spring, one end of the first spring is fixed to the inside of the shell, and the other end is fixed to the top of the cross plate.

[0010] Preferably, a worm wheel 2 and a worm screw 2 are rotatably mounted inside the connecting block 1, the worm screw 2 is meshingly connected with the worm wheel 2, and one end of the worm screw 2 is fixedly connected with a hand wheel.

[0011] Preferably, a rotating disk is fixedly connected to the bottom of the worm gear 2, a connecting rod 3 is rotatably connected inside the rotating disk, and one end of the connecting rod 3 is rotatably connected to a connecting column.

[0012] Preferably, the connecting column is slidably connected inside the connecting block 1, one end of the connecting column is fixedly connected to a limiting block, the limiting block is slidably connected inside the connecting block 1, and one side of the limiting block is fixedly connected to the connecting block 2.

[0013] Preferably, a connecting groove is provided inside the mold, and the connecting groove is engaged with the connecting block. A hollow plate is fixedly connected to the other side of the frame, and a collecting frame is fixedly connected to the outer wall of the shell.

[0014] Preferably, a telescopic rod is provided inside the connecting block 1, and a second spring is sleeved on the outer wall of the telescopic rod. One end of the telescopic rod and the second spring are fixedly connected to the other side of the limit block, and the other end of the telescopic rod and the second spring are fixedly connected to the inside of the connecting block 1.

[0015] A tableting method of a high-efficiency turbine single-punch tablet press comprises the following steps: Step 1: Connect the feeding tube to the feeder to allow the raw material powder to enter the feeding hopper; Step 2: Start the motor to drive the worm 1 to rotate. The worm 1 drives the connecting rod 1 to rotate through the worm gear 1. The connecting rod 1 drives the connecting rod 2 to push the feeding hopper forward, covering the holes on the frame to achieve powder loading. Then, the worm gear 1 continues to rotate, driving the feeding hopper to reset. Step 3, start the electric push rod, the output end of which presses down and drives the connecting rod 1 and the mold to move downward, the connecting rod is separated from the connecting rod 2 when pressed down, and the connecting rod 2 is reset and lowered by the first spring; the mold presses down to punch the powder into tablets; Step 4: The output end of the electric push rod retracts, driving the mold to lift up, and at the same time, the connecting rod 1 drives the connecting rod 2 to move the ejector column upward, and the formed sheet product is ejected from the shell; Step 5: When feeding next time, the feeding hopper pushes the stamped product into the hollow plate for collection, and the excess powder falls into the collection frame through the holes on the hollow plate for collection; Step 6. When the mold needs to be replaced, turn the handwheel to drive the worm gear 2 to rotate and drive the worm gear 2 to rotate. The worm gear 2 drives the rotating disk to rotate, and the connecting column and the limit block are squeezed by the connecting rod 3 to separate the connecting block 2 on one side of the limit block from the connecting groove, thereby realizing the disassembly of the mold; when installing a new mold, insert it into the connecting block 1, and turn the handwheel in the opposite direction to embed the connecting block 2 into the connecting groove to fix the mold, thereby completing the mold replacement.

[0016] The present invention provides a high-efficiency turbine single-punch tablet press and a tablet pressing method thereof, which has the following beneficial effects: 1. The present invention connects the feed through a feed pipe to feed the raw material powder into the feed hopper, and the connecting rod one drives the connecting rod two to enable the ejector column to eject the product out of the shell. Then, during the next feeding, the feeding hopper pushes the stamped product into the hollow plate for collection, thereby achieving the effect of automatic feeding through the worm gear system and automatic ejection and unloading after stamping, solving the problem that the operator needs to manually feed the material during feeding and the material formed by stamping cannot be automatically unloaded, thereby improving the processing efficiency of the high-efficiency turbine single-punch tablet press.

[0017] 2. The present invention inserts the mold into the connecting block one, and then rotates the hand wheel in the opposite direction to embed the connecting block two into the connecting groove to fix the mold, thereby achieving the effect of facilitating mold replacement, solving the problem that the mold of the traditional tablet press is not easy to replace and the product pattern cannot be customized, and improving the adaptability of the high-efficiency turbine single-punch tablet press. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 It is a structural schematic diagram of a connecting rod of the present invention; Figure 4 It is a schematic diagram of the charging hopper structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of a connecting block of the present invention; Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Among them, 1. shell; 2. frame; 3. feeding hopper; 4. motor; 5. worm one; 6. worm wheel one; 7. connecting rod one; 8. connecting rod two; 9. feeding tube; 10. sealing ring; 11. slot; 12. electric push rod; 13. connecting rod one; 14. connecting rod two; 15. limiting column; 16. cross plate; 17. first spring; 18. top column; 19. connecting block one; 20. mold; 21. connecting groove; 22. worm wheel two; 23. rotating disk; 24. connecting rod three; 25. connecting column; 26. limiting block; 27. connecting block two; 28. second spring; 29. ​​telescopic rod; 30. hand wheel; 31. collection frame; 32. hollow plate; 33. worm two. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0021] Please refer to the attached Figure 1 -Attached Figure 4 The present invention provides a high-efficiency turbine single-punch tablet press, including a housing 1. The housing 1 is made of high-quality 304 stainless steel and has good anti-corrosion performance, ensuring that the equipment is not easy to rust in a humid environment and is easy to clean. A frame 2 is provided inside the housing 1. The frame 2 is made of high-strength alloy steel and has excellent load-bearing performance. It can effectively support multiple core components in the equipment and ensure the operating stability of the entire system.

[0022] The driving assembly is installed on one side of the frame 2. The core component is the motor 4. The motor 4 uses an industrial motor of model YZ-1500 with a power of 1500W, which can provide sufficient and stable power. The outer wall of the motor 4 is fixedly connected to one side of the frame 2 by high-strength bolts. The output end of the motor 4 is connected to a worm 5. The worm 5 is made of quenched carbon steel to improve its surface hardness and wear resistance, thereby extending the service life of the equipment. The worm 5 is meshed with the worm wheel 6 on one side of the frame 2. The worm wheel 6 is made of wear-resistant bronze, has excellent corrosion resistance, and is particularly suitable for long-term working environments. The top of the worm wheel 6 is fixedly connected with a connecting rod 7. The connecting rod 7 is made of high-carbon steel and has good impact resistance to ensure that it is not easily deformed under continuous working conditions.

[0023] One end of the connecting rod 1 7 is connected to the connecting rod 2 8 through a rotating shaft, and one end of the connecting rod 2 8 is fixed to the top of the feeding hopper 3. The feeding hopper 3 is made of a lightweight aluminum alloy, which is wear-resistant and corrosion-resistant. A feeding pipe 9 is fixedly connected to the top. The feeding pipe 9 is made of food-grade PVC material and meets food safety standards to ensure that the equipment is suitable for the processing of various types of pharmaceutical and food powders. A sealing assembly is provided at the bottom of the feeding hopper 3, including a sealing ring 10. The sealing ring 10 is made of highly elastic silicone rubber material, which is resistant to high temperatures and has good sealing performance. A card slot 11 for accommodating the sealing ring 10 is provided inside the feeding hopper 3. The card slot 11 is precisely sized and tightly fitted with the sealing ring 10 to avoid powder leakage during the feeding process and ensure the sealing and cleanliness of the powder transportation.

[0024] The housing 1 is fixedly connected with an electric push rod 12. The model of the electric push rod 12 is TP-1000, and the thrust is 1000N, which can meet the requirements of high-pressure operation. The output end of the electric push rod 12 is fixedly connected with a connecting rod 13. The connecting rod 13 is made of stainless steel, has excellent corrosion resistance, and is suitable for long-term use in industrial environments. The lower end of the connecting rod 13 is fixedly connected with a connecting block 19, and the bottom of the connecting block 19 is connected with a mold 20. The mold 20 is made of cemented carbide material, and the surface is processed with high precision to ensure the uniformity of the tableting process and the quality of the finished product.

[0025] A reset assembly is also provided inside the shell 1, including a limit column 15, which is made of high-strength alloy steel and has excellent wear resistance and corrosion resistance. The two ends of the limit column 15 are fixed inside the shell 1 by welding to ensure that it will not loosen during the operation of the equipment. The outer wall of the limit column 15 is slidably connected with a cross plate 16, which is made of 304 stainless steel, which is both wear-resistant and not easy to rust. The cross plate 16 is fixedly connected to the outer wall of the top column 18. The top column 18 is made of high-strength aluminum alloy, which is light and strong. The outer wall is fixedly connected with a connecting rod 2 14, and the connecting rod 2 14 is interlocked with the connecting rod 1 13 to ensure the stability of the mold 20 during the tableting process.

[0026] The outer wall of the limit column 15 is sleeved with a first spring 17, which is made of stainless steel wire and has strong elasticity and fatigue resistance. One end of the first spring 17 is fixed inside the housing 1, and the other end is fixed to the top of the cross plate 16. The design of the first spring 17 ensures that it can be quickly reset after the ejection action of the ejector column 18 is completed, providing protection for the continuous operation of the equipment.

[0027] When the equipment starts to run, the feeding pipe 9 is connected to the external feeding system to smoothly transport the powder raw materials into the feeding hopper 3. Subsequently, the motor 4 starts to drive the worm 5 to rotate. The worm 5 engages with the worm wheel 6, driving the connecting rod 1 7 and the connecting rod 2 8 to push the feeding hopper 3 forward. The feeding hopper 3 covers the holes on the frame 2, thereby achieving accurate feeding of the powder. As the worm wheel 6 continues to rotate, the feeding hopper 3 gradually returns to its original position, completing the input of the powder. The whole process is free of powder leakage under the action of the sealing component, ensuring a clean environment around the equipment.

[0028] After the feeding is completed, the electric push rod 12 starts, pushing the connecting rod 13 downward, thereby driving the mold 20 to press downward to complete the tableting operation of the powder. When the connecting rod 13 is pressed down, it is separated from the connecting rod 2 14, and the connecting rod 2 14 automatically resets under the action of the first spring 17. The mold 20 applies uniform pressure to the powder to press it into a sheet. The electric push rod 12 then retracts, driving the mold 20 to lift up, and the connecting rod 13 drives the connecting rod 2 14 to move upward, so that the top column 18 pushes the formed tablet out of the mold 20 and enters the feeding stage. At the beginning of the next feeding cycle, the feeding hopper 3 moves forward again, pushing the formed tablet into the hollow plate 32 for collection, and the excess powder flows into the collection frame 31 through the holes on the hollow plate 32, completing the cycle of the production process.

[0029] Please refer to the attached Figure 5 and attached Figure 6When the mold 20 needs to be replaced, the operator only needs to turn the hand wheel 30. The hand wheel 30 is made of industrial-grade aluminum alloy, which is light and easy to operate. The hand wheel 30 drives the worm 2 33 to rotate. The worm 2 33 is made of hardened steel, has a high surface hardness, and can provide stable torque transmission. The worm 2 33 is meshed and connected with the worm gear 2 22. The bottom of the worm gear 2 22 is fixedly connected with a rotating disk 23. The rotating disk 23 is rotatably connected with a connecting rod 3 24 inside. One end of the connecting rod 3 24 is connected with a connecting column 25. The connecting column 25 is made of 304 stainless steel to ensure reliable support and stability when replacing the mold.

[0030] One end of the connecting column 25 is fixedly connected to a limit block 26, which is made of high-strength engineering plastics and has good wear resistance and impact resistance. One side of the limit block 26 is fixedly connected to a second connection block 27, which is engaged with the connection groove 21 inside the mold 20, and is used to fix the mold 20 at a predetermined position to prevent the mold from shifting or loosening during operation.

[0031] During the process of replacing the mold, the operator easily turns the hand wheel 30, and drives the worm gear 22 to rotate through the worm gear 23. The worm gear 22 further drives the rotating disk 23 to rotate, driving the connecting rod 3 24 and the connecting column 25 to move forward, pushing the limit block 26 to release the engagement relationship with the connecting groove 21. At this time, the mold 20 is separated from the shell 1, and the mold is disassembled. When a new mold needs to be installed, it is inserted into the connecting block 19, aligned with the connecting groove 21, and the hand wheel 30 is turned in the opposite direction. The worm gear 22 drives the rotating disk 23 to rotate in the opposite direction, so that the connecting block 27 is embedded in the connecting groove 21, and the new mold 20 is firmly fixed in place, ensuring that the replacement process is safe and efficient.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency turbine single-punch tablet press, comprising a housing (1), characterized in that: A frame (2) is fixedly installed in the shell (1), a driving assembly is provided on one side of the frame (2), a feeding hopper (3) is slidably installed inside the frame (2), a feeding pipe (9) is fixedly connected to the top of the feeding hopper (3), and a sealing assembly is provided at the bottom; An electric push rod (12) is fixedly connected inside the housing (1), and an output end of the electric push rod is fixedly connected to a connecting rod 1 (13). The lower end of the connecting rod 1 (13) is fixedly connected to a connecting block 1 (19), and is connected to a mold (20) via the connecting block 1 (19). A reset assembly is provided inside the housing (1), and a top column (18) fixedly connected to the inside of the housing (1). The outer wall of the top column (18) is fixedly connected to a connecting rod 2 (14), and is engaged with the connecting rod 1 (13). The driving assembly comprises a motor (4) mounted on one side of the frame (2); the output end of the motor (4) is fixedly connected to a connecting worm (5); one side of the frame (2) is rotatably connected to a worm wheel (6); the worm wheel (6) is meshed with the worm (5) and is fixedly connected to a connecting rod (7) at the top thereof; the connecting rod (7) is connected to a connecting rod (8) via a rotating shaft at one end; the other end of the connecting rod (8) is rotatably connected to the top of the feeding hopper (3).

2. A high-efficiency turbine single-punch tablet press according to claim 1, characterized in that: The sealing assembly comprises a sealing ring (10) installed inside the feeding hopper (3); a slot (11) for accommodating the sealing ring (10) is provided inside the feeding hopper (3); and the sealing ring (10) is embedded in the slot (11).

3. A high-efficiency turbine single-punch tablet press according to claim 1, characterized in that: The reset assembly comprises a limit column (15), both ends of which are fixedly connected to the inside of the housing (1), a transverse plate (16) is slidably connected to the outer wall of the limit column (15), the transverse plate (16) is fixedly connected to the outer wall of the top column (18), and a first spring (17) is sleeved on the outer wall of the limit column (15), one end of the first spring (17) is fixed to the inside of the housing (1), and the other end is fixed to the top of the transverse plate (16).

4. A high-efficiency turbine single-punch tablet press according to claim 1, characterized in that: The connecting block 1 (19) is internally rotatably mounted with a worm wheel 2 (22) and a worm screw 2 (33); the worm screw 2 (33) is meshingly connected to the worm wheel 2 (22); one end of the worm screw 2 (33) is fixedly connected to a hand wheel (30).

5. A high-efficiency turbine single-punch tablet press according to claim 4, characterized in that: The bottom of the worm gear 2 (22) is fixedly connected to a rotating disk (23), the interior of the rotating disk (23) is rotatably connected to a connecting rod 3 (24), and one end of the connecting rod 3 (24) is rotatably connected to a connecting column (25).

6. A high-efficiency turbine single-punch tablet press according to claim 5, characterized in that: The connecting column (25) is slidably connected inside the connecting block one (19), one end of the connecting column (25) is fixedly connected to a limiting block (26), the limiting block (26) is slidably connected inside the connecting block one (19), and one side of the limiting block (26) is fixedly connected to a connecting block two (27).

7. A high-efficiency turbine single-punch tablet press according to claim 1, characterized in that: A connecting groove (21) is provided inside the mold (20), and the connecting groove (21) is engaged with the second connecting block (27). A hollow plate (32) is fixedly connected to the other side of the frame (2), and a collecting frame (31) is fixedly connected to the outer wall of the shell (1).

8. The high-efficiency turbine single-punch tablet press according to claim 1, characterized in that: A telescopic rod (29) is arranged inside the connecting block (19), and a second spring (28) is sleeved on the outer wall of the telescopic rod (29). One end of the telescopic rod (29) and the second spring (28) are fixedly connected to the other side of the limit block (26), and the other ends of the telescopic rod (29) and the second spring (28) are fixedly connected to the inside of the connecting block (19).

9. A tableting method of a high-efficiency turbine single-punch tablet press, according to the high-efficiency turbine single-punch tablet press according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Connect the feeding pipe (9) to the feeder so that the raw material powder enters the feeding hopper (3); Step 2: Start the motor (4) to drive the worm gear 1 (5) to rotate. The worm gear 1 (5) drives the connecting rod 1 (7) to rotate through the worm gear 1 (6). The connecting rod 1 (7) drives the connecting rod 2 (8) to push the feeding hopper (3) forward to cover the hole on the frame (2) to achieve powder loading. Subsequently, the worm gear 1 (6) continues to rotate to drive the feeding hopper (3) to reset. Step 3, starting the electric push rod (12), the output end of which presses down and drives the connecting rod 1 (13) and the mold (20) to move downward, the connecting rod 1 (13) is separated from the connecting rod 2 (14) when pressed down, and the connecting rod 2 (14) is reset and lowered by the first spring (17); the mold (20) presses down to punch the powder into tablets; Step 4: The output end of the electric push rod (12) is retracted to drive the mold (20) to be lifted, and at the same time, the connecting rod (13) drives the connecting rod (14) to move the ejector column (18) upward, so that the formed sheet product is ejected from the housing (1); Step 5: During the next feeding, the feeding hopper (3) pushes the stamped product into the hollow plate (32) for collection, and the excess powder falls into the collection frame (31) through the holes on the hollow plate (32) for collection; Step 6: When the mold (20) needs to be replaced, the hand wheel (30) is rotated to drive the worm gear (33) to rotate and drive the worm gear (22) to rotate. The worm gear (22) drives the rotating disk (23) to rotate, and the connecting column (25) and the limit block (26) are squeezed by the connecting rod (24) to separate the connecting block (27) on one side of the limit block (26) from the connecting groove (21), thereby realizing the removal of the mold (20); when installing a new mold (20), it is inserted into the connecting block (19), and the hand wheel (30) is rotated in the opposite direction to make the connecting block (27) embed into the connecting groove (21) to fix the mold (20), thereby completing the mold replacement.

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