A detachable powder packaging machine

Through modular design and bolt-fixed connection, the problem of inconvenience in disassembly of existing powder packaging machines is solved, and the equipment is conveniently disassembled and installed and transported, which improves working stability and flexibility.

CN222713881UActive Publication Date: 2025-04-04SHANGHAI DINGJIANG PACKAGING MASCH MFG
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Patent Information

Application Number
CN202421576042.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-04
Publication Date
2025-04-04
Estimated Expiration
2034-07-04

AI Technical Summary

Technical Problem

The parts of the existing powder packaging machine are fixed to the main body, and the non-modular design leads to inconvenience in disassembly and assembly, especially in the transportation process.

Method used

A removable powder packaging machine is designed to connect various modules (such as feeding mechanism, heat sealing mechanism, drive mechanism and cut-off mechanism) by bolts, so that these modules can be disassembled and assembled independently, and the working stability is improved through a turntable and screw leveling device.

Benefits of technology

It realizes convenient disassembly and assembly and transportation of powder packaging machines, improves equipment flexibility and working stability, and reduces transportation and maintenance costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222713881U_ABST
Patent Text Reader

Abstract

The utility model discloses a detachable powder packaging machine, comprising a column, wherein a feeding mechanism, a heat-sealing mechanism, a driving mechanism and a cutting mechanism are sequentially arranged on one side of the column from top to bottom, the feeding mechanism, the heat-sealing mechanism, the driving mechanism and the cutting mechanism are fixedly connected to the column by bolts, and a control box is fixedly connected to the other side of the column, a guide molding mechanism is sleeved on the lower end of the feeding mechanism, a packaging bag placing mechanism is arranged on one side of the feeding mechanism, a packaging bag placing mechanism cover is arranged on the feeding mechanism, and the packaging bag placing mechanism is fixedly connected to the side wall of the column by bolts, a base, a feeding mechanism, a packaging bag placing mechanism, a guide molding mechanism, a heat-sealing mechanism, a driving mechanism and a cutting mechanism are fixed to the column by bolts, and the modular arrangement facilitates the disassembly and assembly of the packaging machine and the packaging and transportation of the packaging machine, and the screw is rotated by a turntable to push the support plate to move, so as to realize the leveling of the device, which is beneficial to the working stability of the packaging machine.
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Description

Technical Field

[0001] The utility model relates to the technical field of powder packaging machines, in particular to a detachable powder packaging machine. Background Art

[0002] Powder packaging machine is suitable for quantitative packaging of powdery, powdered and powdered materials in chemical, food, agricultural and sideline products industries, such as: milk powder, starch, pesticides, veterinary drugs, premixes, additives, condiments, feed, enzyme preparations, etc.

[0003] However, the parts of the current powder packaging machine are generally fixed on the main body of the packaging machine, not modularly designed, and inconvenient to disassemble and assemble during transportation. To address the above problems, a detachable powder packaging machine is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a detachable powder packaging machine to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A detachable powder packaging machine comprises a column, wherein a feeding mechanism, a heat sealing mechanism, a driving mechanism and a cutting mechanism are sequentially arranged on one side of the column from top to bottom, the feeding mechanism, the heat sealing mechanism, the driving mechanism and the cutting mechanism are fixedly connected to the column by bolts, a control box is fixedly connected to the other side of the column, a guide forming mechanism is sleeved on the lower end of the feeding mechanism, a packaging bag placing mechanism is arranged on one side of the feeding mechanism, a packaging bag placing mechanism cover is arranged on the feeding mechanism, and the packaging bag placing mechanism is fixedly connected to the side wall of the column by bolts.

[0007] As a further solution of the utility model: the bottom end of the column is fixedly connected to a base by bolts, the base is in a herringbone shape, and a supporting mechanism is arranged through three ends of the base.

[0008] As a further solution of the utility model: the support mechanism includes a screw rod, which passes through the end of the base accordingly, and is threadedly connected to the base, the top end of the screw rod is fixedly connected to a turntable, and the bottom end of the screw rod is rotatably connected to a support plate.

[0009] As a further solution of the utility model: the feeding mechanism includes a storage bucket, a second motor is fixedly installed on the top of the storage bucket by bolts, a feed port is arranged on the top of the storage bucket, a discharge pipe is fixedly connected to the bottom end of the storage bucket, a spiral auger is rotatably connected inside the storage bucket, the spiral auger extends into the discharge pipe, the top end of the spiral auger passes through the top cover of the storage bucket and is fixedly connected to the output end of the second motor, a mounting seat is fixedly connected to one side of the storage bucket, the mounting seat cover is arranged on the top of the column, and the mounting seat is fixedly installed on the column by bolts.

[0010] As a further solution of the utility model: the packaging bag placement mechanism includes two connecting arms, the bottom ends of the connecting arms are fixedly installed on the side walls of the columns by bolts, the top ends of the connecting arms are fixedly installed with first mounting arms by bolts, rotating rollers are installed between the first mounting arms, limiting mechanisms are symmetrically arranged on the rotating rollers, guide rods are installed between the first mounting arms on one side of the rotating rollers, an L-shaped connecting plate is fixedly installed between the first mounting arms and the connecting arms by bolts, a strip hole is penetrated through the vertical end of the L-shaped connecting plate, and a tensioning rod is slidably connected in the strip hole.

[0011] As a further solution of the utility model: the guide forming mechanism includes a forming guide bucket, a forming guide bucket cover is arranged on the discharge pipe, and second mounting arms are symmetrically installed on both sides of the forming guide bucket by bolts, and the second mounting arms are fixedly installed on the side wall of the column by bolts.

[0012] As a further solution of the utility model: the heat sealing mechanism includes a first mounting frame, one end of the first mounting frame is covered on the side wall of the column, and the first mounting frame is fixed to the column by bolts. The first electric cylinder is symmetrically fixedly installed on both sides of the first mounting frame, and the movable end of the first electric cylinder passes through the side wall of the first mounting frame, and the movable end of the first electric cylinder is fixedly installed with an L-shaped heat sealing plate in the first mounting frame by bolts.

[0013] As a further solution of the utility model: the driving mechanism includes an installation box, in which a first motor is fixedly installed, the output end of the first motor passes through the side wall of the installation box, and one end of the output end of the first motor outside the installation box is fixedly connected to a driving wheel, the installation box is rotatably connected to a driven wheel on one side of the driving wheel, the driving wheel and the driven wheel are tangent to each other, and mounting plates are fixedly connected to both sides of the installation box, and the mounting plates are fixedly installed on the columns by bolts.

[0014] As a further solution of the utility model: the cutting mechanism includes a second mounting frame, one end of the second mounting frame is covered on the column, and the second mounting frame is fixed to the column by bolts, and the other end of the second mounting frame is symmetrically fixedly connected with second electric cylinders on both sides, wherein the movable end of one of the second electric cylinders passes through the side wall of the second mounting frame and the movable end in the second mounting frame is fixedly connected with a cutting knife, and the movable end of the other second electric cylinder passes through the side wall of the second mounting frame and is fixedly connected with a top plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The base, feeding mechanism, packaging bag placement mechanism, guide forming mechanism, heat sealing mechanism, driving mechanism and cutting mechanism in the utility model are fixed on the column by bolts. Due to the modular setting, the packaging machine is convenient for disassembly and assembly, and the packaging machine is convenient for packaging and transportation.

[0017] 2. The utility model realizes leveling of the device by rotating the screw rod through the turntable to push the support plate to move, which is beneficial to the working stability of the packaging machine.

[0018] 3. The utility model sets the rolled packaging bag on the rotating roller, fixes the packaging bag on the rotating roller through a limiting mechanism, and fixes the rotating roller with the packaging bag installed on the first installation arm, and the belt of the packaging bag passes around the tensioning rod and the guide rod in turn and penetrates into the forming guide bucket of the guide forming mechanism, so that the belt of the packaging bag is wrapped around the discharge pipe of the feeding mechanism, and the opening of the belt of the packaging bag is built into the opening of the forming guide bucket to form the prototype of the bag, and the belt of the packaging bag passes through the two L-shaped heat sealing plates of the heat sealing mechanism, and the overlapping edge of the belt of the packaging bag passes between the driving wheel and the driven wheel of the driving mechanism, and the movable end of the first electric cylinder pushes the working L-shaped heat sealing plate to move, so that the opening of the formed packaging bag is heat-sealed, and the output end of the second motor drives the spiral auger to rotate The spiral auger inputs the powder in the storage bucket into the formed bag through the discharge pipe, the first motor in the driving mechanism drives the driving wheel fixedly connected to the output end to rotate, and drives the side sealing edge to move downward through the relatively rotating driving wheel and the driven wheel, the first electric cylinder works again, and the movable end of the first electric cylinder pushes the working L-shaped heat sealing plate to move, so that the packaging bag containing the powder is sealed, and the bottom and side of the next formed packaging bag are sealed at the same time to form the next packaging bag, the packaging bag containing the powder passes through the cutting mechanism, and the two second electric cylinders work at the same time, respectively pushing the fixedly connected cutting knife and the top plate to move relatively, the cutting knife and the top plate cooperate to cut off the packaging bag packed with the powder, repeat the above steps, realize automatic packaging of the powder, and improve packaging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the structure of a detachable powder packaging machine.

[0020] Figure 2 The present invention is a side view of a packaging bag placement mechanism in a detachable powder packaging machine.

[0021] Figure 3 The present invention is a side view of a guide forming mechanism in a detachable powder packaging machine.

[0022] Figure 4 for Figure 1 A partial enlarged view of point A in the middle.

[0023] Figure 5 The figure is a top view of a heat sealing mechanism in a detachable powder packaging machine.

[0024] Figure 6 The figure is a top view of a driving mechanism in a detachable powder packaging machine.

[0025] Figure 7The figure is a top view of a cut-off mechanism in a detachable powder packaging machine.

[0026] Figure 8 The figure is a side view of a feeding mechanism in a detachable powder packaging machine.

[0027] In the figure: 1, column; 2, control box; 3, base; 4, feeding mechanism; 5, packaging bag placement mechanism; 6, guide molding mechanism; 7, heat sealing mechanism; 8, driving mechanism; 9, cutting mechanism; 10, connecting arm; 11, first mounting arm; 12, rotating roller; 13, guide rod; 14, L-shaped connecting plate; 15, strip hole; 16, tension rod; 17, molding guide bucket; 18, second mounting arm; 19, screw rod; 20, rotating Plate; 21. Support plate; 22. First mounting frame; 23. First electric cylinder; 24. L-shaped heat sealing plate; 25. Mounting box; 26. Mounting plate; 27. First motor; 28. Driving wheel; 29. ​​Driven wheel; 30. Second mounting frame; 31. Second electric cylinder; 32. Cutting knife; 33. Top plate; 34. Storage bucket; 35. Feed inlet; 36. Second motor; 37. Mounting seat; 38. Discharge pipe; 39. Auger. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 8 In an embodiment of the utility model, a detachable powder packaging machine comprises a column 1, and a feeding mechanism 4, a heat sealing mechanism 7, a driving mechanism 8 and a cutting mechanism 9 are sequentially arranged on one side of the column 1 from top to bottom. The feeding mechanism 4, the heat sealing mechanism 7, the driving mechanism 8 and the cutting mechanism 9 are fixedly connected to the column 1 by bolts, and a control box 2 is fixedly connected to the other side of the column 1. A guide forming mechanism 6 is sleeved on the lower end of the feeding mechanism 4, and a packaging bag placing mechanism 5 is arranged on one side of the feeding mechanism 4. The packaging bag placing mechanism 5 is covered on the feeding mechanism 4, and the packaging bag placing mechanism 5 is fixedly connected to the side wall of the column 1 by bolts.

[0030] When in use, the loading mechanism is connected with the feeding mechanism 4, and the powder to be packaged is transported to the feeding mechanism 4, and the winding roller of the packaging bag is installed on the packaging bag placing mechanism 5. The packaging bag is guided and formed by the guiding and forming mechanism 6, and passes through the heat sealing mechanism 7, the driving mechanism 8 and the cutting mechanism 9 in sequence. The heat sealing mechanism 7 works to heat-seal the packaging bag passing through the heat sealing mechanism 7 to form the packaging bag, and the feeding mechanism 4 adds the powder to be packaged to the formed packaging bag, and the driving mechanism 8 works to drive the packaging bag containing the powder to move downward, and the heat sealing mechanism 7 works again to seal the packaging bag containing the powder and form a new formed packaging bag, and the cutting mechanism 9 works to cut off the sealed packaging bag, and repeats the above steps to realize the packaging of the powder; the feeding mechanism 4, the packaging bag placing mechanism 5, the guiding and forming mechanism 6, the heat sealing mechanism 7, the driving mechanism 8 and the cutting mechanism 9 in the present application are fixed to the column 1 by bolts. Due to the modular setting, the disassembly and assembly of the packaging machine is convenient, and the packaging and transportation of the packaging machine are convenient.

[0031] The bottom end of the column 1 is fixedly connected to the base 3 by bolts. The base 3 is in a herringbone shape. A supporting mechanism is provided through the three ends of the base 3. The supporting mechanism includes a screw 19. The screw 19 passes through the ends of the base 3 accordingly, and the screw 19 is threadedly connected to the base 3. A turntable 20 is fixedly connected to the top of the screw 19, and a support plate 21 is rotatably connected to the bottom end of the screw 19. The screw 19 is moved by rotating the turntable 20, and the support plate 21 is pushed to move, so as to achieve leveling of the device.

[0032] The feeding mechanism 4 includes a storage bucket 34, a second motor 36 is fixedly installed on the top of the storage bucket 34 by bolts, a feed port 35 is arranged on the top of the storage bucket 34, a discharge pipe 38 is fixedly connected to the bottom end of the storage bucket 34, a spiral auger 39 is rotatably connected in the storage bucket 34, the spiral auger 39 extends into the discharge pipe 38, the top end of the spiral auger 39 passes through the top cover of the storage bucket 34 and is fixedly connected to the output end of the second motor 36, a mounting seat 37 is fixedly connected to one side of the storage bucket 34, the mounting seat 37 cover is arranged on the top of the column 1, and the mounting seat 37 is fixedly installed on the column 1 by bolts, the output end of the second motor 36 drives the spiral auger 39 to rotate, and the spiral auger 39 inputs the powder in the storage bucket 34 into the formed bag through the discharge pipe 38.

[0033] The packaging bag placement mechanism 5 includes two connecting arms 10, the bottom ends of the connecting arms 10 are fixedly mounted on the side walls of the pillar 1 by bolts, the top ends of the connecting arms 10 are fixedly mounted with first mounting arms 11 by bolts, a rotating roller 12 is mounted between the first mounting arms 11, a limiting mechanism is symmetrically arranged on the rotating roller 12, a guide rod 13 is mounted between the first mounting arms 11 on one side of the rotating roller 12, an L-shaped connecting plate 14 is fixedly mounted between the first mounting arm 11 and the connecting arm 10 by bolts, a strip hole 15 is penetrated through the vertical end of the L-shaped connecting plate 14, a tensioning rod 16 is slidably connected in the strip hole 15, by sleeve-mounting the rolled packaging bag on the rotating roller 12, the packaging bag is fixed on the rotating roller 12 by the limiting mechanism, and the rotating roller 12 with the packaging bag mounted is fixedly mounted on the first mounting arm 11, the belt of the packaging bag passes through the tensioning rod 16 and the guide rod 13 in turn and penetrates into the guide forming mechanism 6, and the tensioning rod 16 tensions the bypassed belt for forming the packaging bag.

[0034] The guide forming mechanism 6 includes a forming guide bucket 17, which is covered on the discharge pipe 38. An opening is provided on the side of the forming guide bucket 17 close to the column 1. Second mounting arms 18 are symmetrically installed on both sides of the forming guide bucket 17 by bolts. The second mounting arms 18 are fixed to the side walls of the column 1 by bolts. When in use, the belt of the packaging bag passes through the forming guide bucket 17, so that the belt of the packaging bag is wrapped around the discharge pipe 38 of the feeding mechanism 4, and the opening of the belt of the packaging bag is built into the opening of the forming guide bucket 17 to form the prototype of the bag. The belt of the packaging bag passes through the heat sealing mechanism 7.

[0035] The heat sealing mechanism 7 includes a first mounting frame 22, one end of which is covered on the side wall of the column 1, and the first mounting frame 22 is fixed to the column 1 by bolts. The first mounting frame 22 is symmetrically fixedly installed with first electric cylinders 23 on both sides. The movable end of the first electric cylinder 23 passes through the side wall of the first mounting frame 22, and the movable end of the first electric cylinder 23 is fixedly installed with an L-shaped heat sealing plate 24 in the first mounting frame 22 by bolts. The movable end of the first electric cylinder 23 pushes the working L-shaped heat sealing plate 24 to move, so that the opening of the formed packaging bag is heat-sealed, and the driving mechanism 8 drives the side sealing edge to move downward, and the first electric cylinder 23 works again. The movable end of the first electric cylinder 23 pushes the working L-shaped heat sealing plate 24 to move, so that the packaging bag containing powder is sealed, and at the same time, the bottom and side of the next formed packaging bag are sealed to form the next packaging bag.

[0036] The driving mechanism 8 includes an installation box 25, in which a first motor 27 is fixedly installed, an output end of the first motor 27 passes through a side wall of the installation box 25, and an output end of the first motor 27 is fixedly connected to a driving wheel 28 at one end outside the installation box 25, the installation box 25 is rotatably connected to a driven wheel 29 on one side of the driving wheel 28, the driving wheel 28 and the driven wheel 29 are tangent, and mounting plates 26 are fixedly connected on both sides of the installation box 25, and the mounting plates 26 are fixedly installed on the column 1 by bolts, and the output end of the first motor 27 in the driving mechanism 8 drives the fixedly connected driving wheel 28 to rotate, so that the driving wheel 28 and the driven wheel 29 rotate relative to each other, and the packaged packaging bag is moved downward by driving the side sealing edge of the packaging bag.

[0037] The cutting mechanism 9 includes a second mounting frame 30, one end of which is covered on the column 1 and fixed to the column 1 by bolts. The other end of the second mounting frame 30 is symmetrically fixedly connected with second electric cylinders 31 on both sides. The movable end of one of the second electric cylinders 31 penetrates the side wall of the second mounting frame 30 and is fixedly connected with a cutting knife 32 at the movable end in the second mounting frame 30. The movable end of the other second electric cylinder 31 penetrates the side wall of the second mounting frame 30 and is fixedly connected with a top plate 33 at the movable end in the second mounting frame 30. The two second electric cylinders 31 work simultaneously, respectively pushing the fixedly connected cutting knife 32 and the top plate 33 to move relative to each other. The cutting knife 32 and the top plate 33 are used in coordination to cut off the packaging bag of the packaged powder.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A detachable powder packaging machine, comprising a column (1), characterized in that: A feeding mechanism (4), a heat sealing mechanism (7), a driving mechanism (8) and a cutting mechanism (9) are sequentially arranged on one side of the column (1) from top to bottom. The feeding mechanism (4), the heat sealing mechanism (7), the driving mechanism (8) and the cutting mechanism (9) are fixedly connected to the column (1) by bolts. A control box (2) is fixedly connected to the other side of the column (1). A guide forming mechanism (6) is sleeved on the lower end of the feeding mechanism (4). A packaging bag placing mechanism (5) is arranged on one side of the feeding mechanism (4). The packaging bag placing mechanism (5) is covered on the feeding mechanism (4), and the packaging bag placing mechanism (5) is fixedly connected to the side wall of the column (1) by bolts.

2. A detachable powder packaging machine according to claim 1, characterized in that: The bottom end of the column (1) is fixedly connected to a base (3) by means of bolts; the base (3) is in a herringbone shape, and a support mechanism is provided through three ends of the base (3).

3. A detachable powder packaging machine according to claim 2, characterized in that: The support mechanism comprises a screw rod (19), the screw rod (19) correspondingly passes through the end of the base (3), and the screw rod (19) is threadedly connected to the base (3), the top end of the screw rod (19) is fixedly connected to a turntable (20), and the bottom end of the screw rod (19) is rotatably connected to a support plate (21).

4. The detachable powder packaging machine according to claim 1, characterized in that: The feeding mechanism (4) comprises a storage bucket (34), a second motor (36) is fixedly installed on the top of the storage bucket (34) by bolts, a feeding port (35) is arranged on the top of the storage bucket (34), a discharge pipe (38) is fixedly connected to the bottom of the storage bucket (34), a spiral auger (39) is rotatably connected inside the storage bucket (34), the spiral auger (39) extends into the discharge pipe (38), the top end of the spiral auger (39) passes through the top cover of the storage bucket (34) and is fixedly connected to the output end of the second motor (36), a mounting seat (37) is fixedly connected to one side of the storage bucket (34), the mounting seat (37) is covered on the top of the column (1), and the mounting seat (37) is fixedly installed on the column (1) by bolts.

5. The detachable powder packaging machine according to claim 1, characterized in that: The packaging bag placement mechanism (5) comprises two connecting arms (10), the bottom ends of the connecting arms (10) are fixedly mounted on the side walls of the pillars (1) by means of bolts, the top ends of the connecting arms (10) are fixedly mounted with first mounting arms (11) by means of bolts, a rotating roller (12) is mounted between the first mounting arms (11), a limiting mechanism is symmetrically arranged on the rotating roller (12), a guide rod (13) is mounted between the first mounting arms (11) on one side of the rotating roller (12), an L-shaped connecting plate (14) is fixedly mounted between the first mounting arm (11) and the connecting arm (10) by means of bolts, a strip hole (15) is provided through the vertical end of the L-shaped connecting plate (14), a tensioning rod (16) is slidably connected in the strip hole (15).

6. The detachable powder packaging machine according to claim 1, characterized in that: The guide forming mechanism (6) comprises a forming guide bucket (17), the forming guide bucket (17) is covered on the discharge pipe (38), and second mounting arms (18) are symmetrically mounted on both sides of the forming guide bucket (17) by bolts, and the second mounting arms (18) are fixedly mounted on the side wall of the column (1) by bolts.

7. The detachable powder packaging machine according to claim 1, characterized in that: The heat sealing mechanism (7) comprises a first mounting frame (22), one end of the first mounting frame (22) is covered on the side wall of the column (1), and the first mounting frame (22) is fixed to the column (1) by bolts. First electric cylinders (23) are symmetrically fixedly installed on both sides of the first mounting frame (22), and the movable end of the first electric cylinder (23) passes through the side wall of the first mounting frame (22), and the movable end of the first electric cylinder (23) is fixedly installed with an L-shaped heat sealing plate (24) in the first mounting frame (22) by bolts.

8. The detachable powder packaging machine according to claim 1, characterized in that: The driving mechanism (8) comprises an installation box (25), a first motor (27) is fixedly installed in the installation box (25), an output end of the first motor (27) penetrates the side wall of the installation box (25), and one end of the output end of the first motor (27) outside the installation box (25) is fixedly connected to a driving wheel (28), the installation box (25) is rotatably connected to a driven wheel (29) on one side of the driving wheel (28), the driving wheel (28) and the driven wheel (29) are tangent, and installation plates (26) are fixedly connected to both sides of the installation box (25), and the installation plates (26) are fixedly installed on the column (1) by bolts.

9. The detachable powder packaging machine according to claim 1, characterized in that: The cutting mechanism (9) comprises a second mounting frame (30), one end of the second mounting frame (30) is covered on the column (1), and the second mounting frame (30) is fixed to the column (1) by bolts, and the other end of the second mounting frame (30) is symmetrically fixedly connected to second electric cylinders (31) on both sides, wherein the movable end of one of the second electric cylinders (31) penetrates the side wall of the second mounting frame (30) and is fixedly connected to a cutting knife (32) at the movable end in the second mounting frame (30), and the movable end of the other second electric cylinder (31) penetrates the side wall of the second mounting frame (30) and is fixedly connected to a top plate (33) at the movable end in the second mounting frame (30).