Multifunctional aluminum alloy pipeline die-casting equipment

Abstract

The invention discloses multifunctional aluminum alloy pipeline die-casting equipment, and relates to the technical field of aluminum alloy pipeline die-casting. Comprising a base, a mold is arranged on the base, one end of the mold communicates with a filling pipeline, and a material filling barrel is arranged on the filling pipeline; a removing mechanism is arranged at the top of the base and is used for removing sweeps in the mold; a filling mechanism is arranged at one end of the base and comprises a first sliding seat slidably mounted on the base, a position changing seat is rotatably mounted on the first sliding seat, a mounting seat is arranged at the top of the position changing seat, a push rod is fixedly arranged on the mounting seat, a punch is arranged at the end of the push rod, and the punch is in sliding fit with a filling pipeline and used for pushing molten materials; a fixing mechanism is arranged at the end of the filling pipeline, the punch and the pipeline can be conveniently maintained, tedious disassembly operation is not needed, and therefore the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting of aluminum alloy pipes, and particularly relates to a multi-functional die-casting device for aluminum alloy pipes. Background Art

[0002] Die-casting of aluminum alloy pipes is a method of manufacturing pipe components using aluminum alloy materials through the die-casting process. Die-casting is a process in which molten metal is injected into a mold under high pressure and rapidly cooled and formed. In the production of aluminum alloy pipes, die-casting can manufacture pipe products with high precision, complex shapes, and thin walls. During the die-casting process, the molten material is extruded by a punch, flows in the pipe, and finally is transferred into the mold for forming; the punch is in sliding fit in the pipe, and after long-term repeated sliding, defects such as corrosion and cracks will appear on the surface of the punch, which requires timely maintenance. However, in current die-casting equipment, cumbersome disassembly is required to perform maintenance operations, resulting in low operation efficiency; based on this, the present invention proposes a die-casting device that facilitates convenient maintenance of the punch and the pipe without cumbersome disassembly operations, thereby improving operation efficiency. Summary of the Invention

[0003] Aiming at the above technical problems, the present invention facilitates convenient maintenance of the punch and the pipe without cumbersome disassembly operations, thereby improving operation efficiency.

[0004] The implementation scheme of the present invention is as follows: A multi-functional die-casting device for aluminum alloy pipes, including a base, a mold is arranged on the base, one end of the mold is connected to a filling pipe, and a filling material cylinder is arranged on the filling pipe; a cleaning mechanism is arranged on the top of the base for removing waste chips inside the mold; a filling mechanism is arranged at one end of the base, the filling mechanism includes a sliding seat one slidably installed on the base, a rotating seat is rotatably installed on the sliding seat one, an installation seat is arranged on the top of the rotating seat, a push rod is fixedly arranged on the installation seat, a punch is arranged at the end of the push rod, and the punch is in sliding fit with the filling pipe for pushing the molten material; a fixing mechanism is arranged at the end of the filling pipe, the fixing mechanism includes a fixing seat, a cooperating disc is slidably fitted on the push rod, and the cooperating disc is fixed in cooperation with the fixing seat; an extending mechanism is arranged on the buckling push block, the extending mechanism includes an angle turntable rotatably installed on the installation seat, a limiting sleeve is arranged on the angle turntable, an extending rod is slidably installed on the limiting sleeve, the extending rod is slidably fitted inside the push rod, and a scraping mechanism is arranged at the end of the extending rod; a maintenance mechanism is arranged on the top of the base for inspecting and maintaining the punch.

[0005] Further, the cleaning mechanism includes an adsorption box, a control electric cylinder, and an adsorption part arranged on the top of the base. The adsorption box is communicated with the adsorption part through a pipe, and the control electric cylinder is used to control the movement of the adsorption part; a cooling system is arranged at the bottom of the base for cooling the mold; an opening and closing oil cylinder is arranged at one end of the base for controlling the opening and closing of the mold.

[0006] Furthermore, the filling mechanism includes a first motor and a first lead screw disposed on the base. The first motor is used to drive the first lead screw; a first sliding seat forms a screw pair with the first lead screw, and a rotation motor is disposed on the first sliding seat. The rotation motor is used to drive the rotation seat; and a fixed cylinder is disposed on the first sliding seat. A fixing hole is formed at the bottom of the rotation seat, and the telescopic rod of the fixed cylinder is matched with the fixing hole for fixation.

[0007] Furthermore, the fixing mechanism includes a second motor and a second lead screw disposed on the filling pipeline. The second motor is used to drive the second lead screw, and a fixed push plate is slidably mounted on the filling pipeline. The fixed push plate forms a screw pair with the second lead screw, and a push seat is disposed on the fixed push plate; a fastening push block is slidably disposed on the fixed seat. The fastening push block is pushed by the push seat, and a first spring is connected between the fastening push block and the fixed seat; a matching disk is matched with the fixed seat, and the fastening push block slides to fasten the matching disk.

[0008] Furthermore, a pressing plate is telescopically disposed inside the matching disk. A second spring is connected between the pressing plate and the matching disk, and one end of the fastening push block is in pressing contact with the pressing plate.

[0009] Furthermore, a push block is disposed on the push rod. The push block contacts the matching disk to push the matching disk.

[0010] Furthermore, the extension mechanism includes an angle motor disposed on the mounting seat. An angle gear is disposed on the output shaft of the angle motor. The angle gear meshes with an angle turntable. An extension motor is disposed on the angle turntable. An extension gear is disposed on the output shaft of the extension motor, and an extension rack is disposed on the extension rod. The extension rack meshes with the extension gear.

[0011] Furthermore, the scraping mechanism includes a cleaning cylinder disposed on the extension rod. A cleaning part is disposed on the telescopic rod of the cleaning cylinder.

[0012] Furthermore, the maintenance mechanism includes a maintenance control cylinder disposed on the top of the base. A maintenance cylinder is disposed on the telescopic rod of the maintenance control cylinder. An azimuth motor is disposed on the maintenance cylinder. A rotating frame is disposed on the output shaft of the azimuth motor. An inspection camera is disposed on the rotating frame for surface inspection of the punch; a transmission box and an oil object cylinder are disposed on the rotating frame. A release part is disposed on the telescopic rod of the oil object cylinder. The release part communicates with the transmission box to release the oil object; a maintenance cylinder is disposed on the rotating frame. A second maintenance motor is disposed on the telescopic rod of the maintenance cylinder. A second maintenance part is disposed on the output shaft of the second maintenance motor for cleaning the surface of the punch. A flipping cylinder is also rotatably disposed on the rotating frame, and a flipping motor is fixedly disposed. The flipping motor is used to drive the flipping cylinder. A first maintenance motor is disposed on the output shaft of the flipping cylinder. A first maintenance part is disposed on the output shaft of the first maintenance motor for cleaning the end face of the punch.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) The pushing seat pushes the buckling pushing block. The end of the buckling pushing block is buckled inside the matching disc, and the end of the buckling pushing block is in pressing contact with the pressing plate to enhance the fixing effect. The fixing electric cylinder can fix the transposition seat. Through the movement of the first sliding seat, the push rod and the punch move to complete the extrusion and pushing operation. (2) The inspection camera can inspect the surface defects of the punch, such as cracks, etc. The maintenance electric cylinder controls the position of the second maintenance motor, and the second maintenance part clears the surface of the punch. The flipping electric cylinder is flipped through the flipping motor, and the first maintenance motor drives the first maintenance part to clear the end face of the punch. The lubricating oil is transmitted through the transmission box, and the oil cylinder controls the release part to move, and the release part coats the lubricating oil on the surface of the punch. (3) The residual materials inside the filling pipe can be processed. Specifically, by controlling the first sliding seat to transfer to the conversion position, the transposition seat is rotated through the transposition motor, so that the extension rod faces the filling pipe. Through the operation of the extension motor, the extension rod extends into the filling pipe. That is, the scraping is performed by controlling the scraping part through the scraping electric cylinder. Through the operation of the angle motor, the angle turntable can be driven to rotate, and then the scraping operation is completed and the residue is removed. The extension rod is slidably matched with the push rod, which can effectively reduce the extension distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the filling mechanism of the present invention.

[0016] Figure 3 It is a schematic diagram of the structure of the filling mechanism of the present invention from another angle.

[0017] Figure 4 It is a schematic diagram of the structure of the fixing mechanism of the present invention.

[0018] Figure 5 It is a schematic diagram of the partial structure of the fixing mechanism of the present invention.

[0019] Figure 6 It is a schematic diagram of the structure of the extension mechanism of the present invention.

[0020] Figure 7 It is a schematic diagram of the structure of the extension rod of the present invention.

[0021] Figure 8 It is a schematic diagram of the structure of the maintenance mechanism of the present invention.

[0022] Figure 9 It is a schematic diagram of the installation structure of the rotating frame of the present invention.

[0023] Figure 10 It is a schematic diagram of the installation structure of the rotating frame of the present invention from another angle.

[0024] Reference numerals: 1 - base; 2 - cooling system; 3 - adsorption box; 4 - control electric cylinder; 5 - adsorption part; 6 - mold; 7 - opening and closing oil cylinder; 8 - filling material cylinder; 9 - filling pipeline; 10 - motor 1; 11 - lead screw 1; 12 - sliding seat 1; 13 - transposition motor; 14 - fixed electric cylinder; 15 - transposition seat; 16 - mounting seat; 17 - push rod; 18 - motor 2; 19 - lead screw 2; 20 - fixed push plate; 21 - punch; 22 - fixed seat; 23 - mating disc; 24 - push block; 25 - push seat; 26 - fastening push block; 27 - spring 1; 28 - pressing plate; 29 - spring 2; 30 - angle motor; 31 - angle gear; 32 - angle turntable; 33 - limit sleeve; 34 - extension rod; 35 - cleaning electric cylinder; 36 - cleaning part; 37 - extension gear; 38 - extension rack; 39 - extension motor; 40 - maintenance control electric cylinder; 41 - azimuth motor; 42 - maintenance cylinder; 43 - rotating frame; 44 - inspection camera; 45 - transmission box; 46 - oil and material electric cylinder; 47 - release part; 48 - flipping motor; 49 - flipping electric cylinder; 50 - maintenance motor 1; 51 - maintenance part 1; 52 - maintenance electric cylinder; 53 - maintenance motor 2; 54 - maintenance part 2. Detailed implementation manners

[0025] Embodiment: As Figures 1 to 10 shown, a mold 6 is arranged on a base 1, one end of the mold 6 is communicated with a filling pipeline 9, and a filling material cylinder 8 is arranged on the filling pipeline 9; a cleaning mechanism is arranged on the top of the base 1 for removing waste chips inside the mold 6; the cleaning mechanism includes an adsorption box 3, a control electric cylinder 4 and an adsorption part 5 arranged on the top of the base 1, the adsorption box 3 is communicated with the adsorption part 5 through a pipe, and the control electric cylinder 4 is used for controlling the movement of the adsorption part 5; a cooling system 2 is arranged at the bottom of the base 1 for cooling the mold 6; an opening and closing oil cylinder 7 is arranged at one end of the base 1 for controlling the opening and closing of the mold 6.

[0026] A filling mechanism is arranged at one end of the base 1. The filling mechanism includes a sliding seat 12 slidably mounted on the base 1, a transposition seat 15 rotatably mounted on the sliding seat 12, a mounting seat 16 arranged on the top of the transposition seat 15, a push rod 17 fixedly arranged on the mounting seat 16, and a punch 21 arranged at the end of the push rod 17. The punch 21 is slidably matched with the filling pipeline 9 for pushing molten material; a fixing mechanism is arranged at the end of the filling pipeline 9. The fixing mechanism includes a fixed seat 22, a mating disc 23 is slidably matched on the push rod 17, and the mating disc 23 is matched and fixed with the fixed seat 22; an extension mechanism is arranged on the fastening push block 26. The extension mechanism includes an angle turntable 32 rotatably mounted on the mounting seat 16, a limit sleeve 33 is arranged on the angle turntable 32, an extension rod 34 is slidably mounted on the limit sleeve 33, the extension rod 34 is slidably matched with the inside of the push rod 17, and a scraping mechanism is arranged at the end of the extension rod 34; a maintenance mechanism is arranged on the top of the base 1 for inspecting and maintaining the punch 21.

[0027] The filling mechanism includes a motor 10 and a screw 11 arranged on a base 1, wherein the motor 10 is used to drive the screw 11; a slide 12 and the screw 11 form a spiral pair, a transposition motor 13 is arranged on the slide 12, and the transposition motor 13 is used to drive a transposition seat 15; and a fixed electric cylinder 14 is arranged on the slide 12, and a fixing hole is opened at the bottom of the transposition seat 15, and the telescopic rod of the fixed electric cylinder 14 cooperates with the fixing hole for fixing.

[0028] The fixing mechanism includes a motor 2 18 and a screw 2 19 arranged on the filling pipe 9. The motor 2 18 is used to drive the screw 2 19, and a fixed push plate 20 is slidably installed on the filling pipe 9. The fixed push plate 20 and the screw 2 19 form a spiral pair, and a push seat 25 is arranged on the fixed push plate 20; a snap-fit ​​push block 26 is slidably arranged on the fixed seat 22, and the snap-fit ​​push block 26 is pushed by the push seat 25, and a spring 1 27 is connected between the snap-fit ​​push block 26 and the fixed seat 22; the matching plate 23 is matched with the fixed seat 22, and the snap-fit ​​push block 26 slides to snap the matching plate 23; a pressure plate 28 is telescopically arranged on the inner side of the matching plate 23, and a spring 29 is connected between the pressure plate 28 and the matching plate 23, and one end of the snap-fit ​​push block 26 is in extrusion contact with the pressure plate 28.

[0029] A push block 24 is provided on the push rod 17 , and the push block 24 contacts the matching disk 23 to push the matching disk 23 .

[0030] The extension mechanism includes an angle motor 30 arranged on the mounting seat 16, an angle gear 31 is arranged on the output shaft of the angle motor 30, the angle gear 31 is meshed with the angle turntable 32, an extension motor 39 is arranged on the angle turntable 32, an extension gear 37 is arranged on the output shaft of the extension motor 39, and an extension rack 38 is arranged on the extension rod 34, and the extension rack 38 is meshed with the extension gear 37.

[0031] The scraping mechanism includes a cleaning electric cylinder 35 arranged on an extension rod 34 , and a cleaning portion 36 is arranged on the telescopic rod of the cleaning electric cylinder 35 .

[0032] The maintenance mechanism includes a maintenance control electric cylinder 40 arranged on the top of the base 1. A maintenance cylinder 42 is arranged on the telescopic rod of the maintenance control electric cylinder 40. An azimuth motor 41 is arranged on the maintenance cylinder 42. A rotating frame 43 is arranged on the output shaft of the azimuth motor 41. An inspection camera 44 is arranged on the rotating frame 43 for surface inspection of the punch 21. A transmission box 45 and an oil object electric cylinder 46 are arranged on the rotating frame 43. A release part 47 is arranged on the telescopic rod of the oil object electric cylinder 46. The release part 47 communicates with the transmission box 45 to release oil objects. A maintenance electric cylinder 52 is arranged on the rotating frame 43. A second maintenance motor 53 is arranged on the telescopic rod of the maintenance electric cylinder 52. A second maintenance part 54 is arranged on the output shaft of the second maintenance motor 53 for cleaning the surface of the punch 21. A flipping electric cylinder 49 is rotatably arranged on the rotating frame 43, and a flipping motor 48 is fixedly arranged. The flipping motor 48 is used to drive the flipping electric cylinder 49. A first maintenance motor 50 is arranged on the output shaft of the flipping electric cylinder 49. A first maintenance part 51 is arranged on the output shaft of the first maintenance motor 50 for cleaning the end face of the punch 21.

[0033] The working principle is as follows: The opening and closing oil cylinder 7 controls the opening and closing of the mold 6. When the mold is opened, the adsorption part 5 is controlled by the control electric cylinder 4 to move to the inner side of the mold 6. Through the operation of the adsorption box 3, the waste chips on the inner side of the mold 6 can be adsorbed and removed by the adsorption part 5. The product is formed in the mold 6 and cooled by the cooling system 2. The molten material is filled into the filling pipeline 9 by the filling material cylinder 8. Through the movement of the push rod 17, that is, the punch 21 squeezes and pushes the material, so that the material is filled into the mold 6.

[0034] Specifically, through the operation of the first motor 10, the first lead screw 11 rotates, the first sliding seat 12 moves, and the punch 21 slides and cooperates with the inside of the filling pipeline 9. First, the cooperation disk 23 is fixed in cooperation with the fixed seat 22. That is, through the operation of the second motor 18, the second lead screw 19 rotates, the fixed push disk 20 moves, the push seat 25 pushes the buckling push block 26, and the end of the buckling push block 26 buckles inside the cooperation disk 23, and the end of the buckling push block 26 is in pressing contact with the pressing plate 28 to enhance the fixing effect. The fixed electric cylinder 14 can fix the transposition seat 15. Through the movement of the first sliding seat 12, the push rod 17 and the punch 21 move to complete the extrusion and pushing operation.

[0035] When performing maintenance on the subsequent punch 21, the fixed seat 22 and the mating disk 23 are first released from fixation. The push rod 17 extends outwards, and the push block 24 contacts the end face of the mating disk 23 to push out the mating disk 23, that is, to separate the fixed seat 22 from the mating disk 23. When the punch 21 is outside the filling pipeline 9, the position of the maintenance cylinder 42 is controlled by the maintenance control electric cylinder 40. The azimuth motor 41 can control the rotation of the rotating frame 43, and the inspection camera 44 can inspect the surface defects of the punch 21, such as cracks. The position of the maintenance motor two 53 is controlled by the maintenance electric cylinder 52, and the maintenance part two 54 performs cleaning treatment on the surface of the punch 21. The turnover electric cylinder 49 is turned over by controlling the turnover motor 48, and the maintenance motor one 50 drives the maintenance part one 51 to perform cleaning treatment on the end face of the punch 21. The lubricating oil is transported through the transmission box 45, and the oil cylinder 46 controls the movement of the release part 47, and the release part 47 applies the lubricating oil on the surface of the punch 21.

[0036] Furthermore, the residual materials inside the filling pipeline 9 can be processed. Specifically, by controlling the sliding seat one 12 to transfer to the conversion position, the rotation of the conversion seat 15 is controlled by the conversion motor 13, so that the extension rod 34 faces the filling pipeline 9. By operating the extension motor 39, the extension rod 34 extends into the filling pipeline 9. That is, the scraping is performed by controlling the scraping part 36 through the scraping electric cylinder 35. By operating the angle motor 30, the angle turntable 32 can be driven to rotate, and then the scraping operation is completed and the residue is removed. The extension rod 34 and the push rod 17 are slidably matched, which can effectively reduce the extension distance.

Claims

1. A multifunctional aluminum alloy pipe die-casting device, comprising a base (1), a mold (6) being arranged on the base (1), one end of the mold (6) being connected to a filling pipe (9), and a filling material cylinder (8) being arranged on the filling pipe (9); characterized in that: A cleaning mechanism is arranged on the top of the base (1) for removing waste chips inside the mold (6); a filling mechanism is arranged at one end of the base (1), the filling mechanism comprising a slide seat (12) slidably mounted on the base (1), a transposition seat (15) rotatably mounted on the slide seat (12), a mounting seat (16) arranged on the top of the transposition seat (15), a push rod (17) fixedly arranged on the mounting seat (16), a punch (21) arranged at the end of the push rod (17), the punch (21) slidably cooperates with the filling pipe (9) for pushing the molten material; a fixing mechanism is arranged at the end of the filling pipe (9), the fixing mechanism comprising a fixed A fixed seat (22) is provided with a matching plate (23) which is slidably matched on the push rod (17), and the matching plate (23) is matched and fixed with the fixed seat (22); an extension mechanism is provided on the buckled push block (26), and the extension mechanism includes an angle rotating plate (32) which is rotatably mounted on the mounting seat (16), a limit sleeve (33) is provided on the angle rotating plate (32), an extension rod (34) is slidably mounted on the limit sleeve (33), the extension rod (34) is slidably matched with the inside of the push rod (17), and a scraping mechanism is provided at the end of the extension rod (34); a maintenance mechanism is provided on the top of the base (1) for inspecting and maintaining the punch (21).

2. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1 is characterized in that: The cleaning mechanism comprises an adsorption box (3), a control electric cylinder (4) and an adsorption part (5) arranged on the top of the base (1); a connecting pipe between the adsorption box (3) and the adsorption part (5); and the control electric cylinder (4) is used to control the movement of the adsorption part (5). A cooling system (2) is arranged at the bottom of the base (1) for cooling the mold (6); and an opening and closing oil cylinder (7) is arranged at one end of the base (1) for controlling the opening and closing of the mold (6).

3. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1 is characterized in that: The filling mechanism comprises a motor (10) and a screw (11) arranged on a base (1), wherein the motor (10) is used to drive the screw (11); a slide seat (12) and the screw (11) form a spiral pair, a transposition motor (13) is arranged on the slide seat (12), and the transposition motor (13) is used to drive a transposition seat (15); and a fixed electric cylinder (14) is arranged on the slide seat (12), and a fixing hole is opened at the bottom of the transposition seat (15), and a telescopic rod of the fixed electric cylinder (14) cooperates with the fixing hole for fixing.

4. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1 is characterized in that: The fixing mechanism comprises a second motor (18) and a second screw rod (19) arranged on the filling pipe (9), wherein the second motor (18) is used to drive the second screw rod (19), and a fixed push plate (20) is slidably mounted on the filling pipe (9), wherein the fixed push plate (20) and the second screw rod (19) form a spiral pair, and a push seat (25) is arranged on the fixed push plate (20); a snap-fit ​​push block (26) is slidably arranged on the fixed seat (22), the snap-fit ​​push block (26) is pushed by the push seat (25), and a spring (27) is connected between the snap-fit ​​push block (26) and the fixed seat (22); the matching plate (23) matches with the fixed seat (22), and the snap-fit ​​push block (26) slides to snap-fit ​​the matching plate (23).

5. The multifunctional aluminum alloy pipe die-casting equipment according to claim 4 is characterized in that: A pressure plate (28) is telescopically arranged inside the matching disk (23), a second spring (29) is connected between the pressure plate (28) and the matching disk (23), and one end of the buckled push block (26) is in compression contact with the pressure plate (28).

6. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1 is characterized in that: The push rod (17) is provided with a push block (24), and the push block (24) contacts the matching disk (23) to push the matching disk (23).

7. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1 is characterized in that: The extension mechanism comprises an angle motor (30) arranged on a mounting seat (16); an angle gear (31) is arranged on an output shaft of the angle motor (30); the angle gear (31) meshes with an angle rotating disk (32); an extension motor (39) is arranged on the angle rotating disk (32); an extension gear (37) is arranged on the output shaft of the extension motor (39); and an extension rack (38) is arranged on the extension rod (34); the extension rack (38) meshes with the extension gear (37).

8. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1 is characterized in that: The scraping mechanism comprises a cleaning electric cylinder (35) arranged on an extension rod (34), and a cleaning portion (36) is arranged on the telescopic rod of the cleaning electric cylinder (35).

9. The multifunctional aluminum alloy pipe die-casting equipment according to claim 1, characterized in that: The maintenance mechanism comprises a maintenance control electric cylinder (40) arranged on the top of the base (1); a maintenance cylinder (42) is arranged on the telescopic rod of the maintenance control electric cylinder (40); an azimuth motor (41) is arranged on the maintenance cylinder (42); a rotating frame (43) is arranged on the output shaft of the azimuth motor (41); an inspection camera (44) is arranged on the rotating frame (43) for performing surface inspection on the punch head (21); a transmission box (45) and an oil-containing electric cylinder (46) are arranged on the rotating frame (43); a release portion (47) is arranged on the telescopic rod of the oil-containing electric cylinder (46); the release portion (47) is connected to the transmission box (45) to release the oil; and A maintenance electric cylinder (52) is arranged on the rotating frame (43), a maintenance motor (53) is arranged on the telescopic rod of the maintenance electric cylinder (52), a maintenance part (54) is arranged on the output shaft of the maintenance motor (53), and the surface of the punch (21) is cleaned. A flip electric cylinder (49) is rotatably arranged on the rotating frame (43), and a flip motor (48) is fixedly arranged. The flip motor (48) is used to drive the flip electric cylinder (49), a maintenance motor (50) is arranged on the output shaft of the flip electric cylinder (49), and a maintenance part (51) is arranged on the output shaft of the maintenance motor (50), and the end surface of the punch (21) is cleaned.

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