CN214721000U

CN214721000U - Pipe cutting machine

Info

Publication number: CN214721000U
Application number: CN202120556218.0U
Authority: CN
Inventors: 罗志城; 罗志辉
Original assignee: Foshan City Shunde District Kaimingwei Machinery Co ltd
Current assignee: Foshan City Shunde District Kaimingwei Machinery Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-11-16
Anticipated expiration: 2031-03-17

Abstract

The utility model discloses a pipe cutting machine, which comprises a frame, be provided with the pipe cutting plane in the frame, be provided with the pipe cutting opening on the pipe cutting plane, be provided with in the frame: a pipe conveying mechanism for conveying the workpiece to the pipe cutting opening; pipe cutting mechanism, it includes base, linear driving piece, slide, driving motor and cutter, driving motor drive connect in the cutter, the rotation axis of cutter is located pipe cutting planar below, the base connect in the frame, linear driving piece connect in on the base, the slide set up in on the linear driving piece, linear driving piece accessible the slide drives the cutter business turn over in pipe cutting opening, the utility model discloses to not unidimensional tubular product all can more conveniently, accurately adjust when adjusting the feed volume, the feed error when reducing pipe cutting improves pipe cutting quality.

Description

Pipe cutting machine

Technical Field

The utility model relates to a machine tool especially relates to a pipe cutting machine.

Background

Pipe cutting machine is when the pipe cutting, because the tubular product size of different specification models is different, the cutter need press from both sides tubular product earlier before the pipe cutting tightly, then need adjust the feed volume according to the tubular product of unidimensional during the pipe cutting, with control pipe cutting volume, in practical application, still need change tubular product anchor clamps according to the tubular product of unidimensional, and parameter when adjusting pipe cutting, the process is comparatively troublesome, need adjust, and it is relatively poor to appear cutting the pipe quality easily, be difficult to the problem of control pipe cutting quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipe cutting machine to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The utility model provides a solution of its technical problem is:

the utility model provides a pipe cutting machine, includes the frame, be provided with the pipe cutting plane in the frame, be provided with the pipe cutting opening on the pipe cutting plane, be provided with in the frame: a pipe conveying mechanism for conveying the workpiece to the pipe cutting opening; pipe cutting mechanism, it includes base, sharp driving piece, slide, driving motor and cutter, driving motor drive connect in the cutter, the rotation axis of cutter is located cut the planar below of pipe, the base connect in the frame, sharp driving piece connect in on the base, the slide set up in on the sharp driving piece, sharp driving piece accessible the slide drives the cutter pass in and out cut the pipe opening.

The technical scheme at least has the following beneficial effects: the pipe cutting machine is characterized in that a pipe cutting plane for cutting pipes is arranged on a rack, a pipe conveying mechanism conveys a workpiece to a pipe cutting opening, and then a sliding plate is driven by a linear driving piece to do linear reciprocating motion, so that a cutter is driven to enter and exit the pipe cutting opening and cut the pipes.

As a further improvement of the technical scheme, an avoiding cavity is downwards arranged on the top surface of the base, a speed reducer is arranged on the bottom surface of the avoiding cavity, a shaft tube is connected to the sliding plate, a transmission shaft is arranged in the shaft tube, the cutter is connected to one end of the transmission shaft, and the driving motor is connected to the other end of the cutter through the speed reducer. The driving motor drives the cutter to rotate through the speed reducer, the output torque can be improved by the speed reducer, the required pipe cutting force can be achieved with lower power, the top surface of the base is provided with an avoiding cavity for components such as the driving motor and the speed reducer, the components such as the driving motor and the speed reducer are placed in the avoiding cavity, and the whole structure is more compact.

As a further improvement of the technical scheme, the linear driving piece is a front-back translation electric screw rod. Namely, the electric screw rod capable of translating back and forth is used for providing the driving force for the sliding plate to do linear reciprocating motion.

As a further improvement of the technical scheme, the top side of the base is provided with a guide rail, the bottom side of the sliding plate is provided with a sliding groove, and the guide rail and the sliding groove are mutually matched and connected. The slide passes through the mutually supporting of guide rail and spout to be connected, can follow linear direction reciprocating motion on the base, has improved the stability of slide when the motion.

As a further improvement of the technical scheme, a dust hood is arranged on the base, a dust collection space with an upward opening is arranged in the dust hood, the bottom of the cutter extends into the dust collection space, and a waste outlet communicated with the dust collection space is connected to the dust collection hood. When the cutter cuts the pipe, the top of the cutter is in contact with the pipe, and waste materials generated by the pipe in the cutting process enter the waste material outlet from the dust collection space and are discharged from the dust collection space in the dust collection cover, so that the pipe is convenient to collect.

As a further improvement of the above technical solution, the pipe feeding mechanism includes: the pipe clamping assembly comprises a pipe clamping seat connected to the rack, and a first pipe clamping space is arranged in the pipe clamping seat; the pipe pushing assembly is positioned on the right side of the pipe clamping assembly and comprises a first left-right translation electric screw rod connected to the rack and a pipe pushing seat connected to the first left-right translation electric screw rod, the first left-right translation electric screw rod can drive the pipe pushing seat to be close to or far away from the pipe clamping seat, and a second pipe clamping space is arranged in the pipe pushing seat; the trombone slide subassembly, it is located the left side of pressing from both sides the pipe subassembly, the trombone slide subassembly including connect in the electronic lead screw of translation about the second in the frame, connect in the trombone slide seat on the electronic lead screw of translation about the second, the electronic lead screw of translation can drive about the second the trombone slide seat is close to or keeps away from press from both sides the pipe seat, be provided with the third in the trombone slide and press from both sides a tub space, the bottom surface in first double-layered tub space with the bottom surface in third double-layered tub space forms jointly cut the pipe plane, cut a tub opening and be located first double-layered tub space with between the third double-layered tub space. The external pipe to be cut can be placed into the second pipe clamping space, the pipe is clamped by the pipe pushing seat and driven to approach the pipe clamping seat through the first left-right translation electric screw rod, the pipe enters the first pipe clamping space and the third pipe clamping space and is clamped by the pipe clamping seat and the pipe pulling seat, the pipe is cut through the back-and-forth movement of the cutter between the first pipe clamping space and the third pipe clamping space, the pipe pulling seat is driven to move leftwards through the second left-right translation electric screw rod, the cut pipe is separated from the cutter, the friction between the cutter and the pipe is reduced, so that the cut surface of the pipe is smoother, the pipe pushing seat and the pipe pulling seat are reset, the pipe pushing and the pipe cutting actions are repeated, when the pipe to be cut is shorter in the pipe pushing seat, one end of the pipe penetrates through the first pipe clamping space and enters the third pipe clamping space, but the pipe cannot be pushed to the right, the pipe is continuously pulled leftwards by the pipe pulling seat after the pipe is clamped, the pipe can be conveyed in place, then the pipe clamping seat is used for clamping the pipe, and finally the pipe is cut through the cutter, so that the waste of the tailings of the pipe can be reduced, the economic benefit of production is improved, the pipe is more stable during pipe cutting, and the pipe cutting quality is improved.

As a further improvement of the above technical solution, the tube clamping seat includes a first base plate and a first mounting plate disposed on the frame, a first lifting cylinder connected to the first mounting plate, and a first pressing plate connected to the first lifting cylinder, the first mounting plate is located above the first base plate, the first lifting cylinder can drive the first pressing plate to move up and down, and a first tube clamping space is formed between the first pressing plate and the first base plate. The first pressure plate is driven to move up and down through the first lifting cylinder, so that the pipe is pressed on the first base plate in the vertical direction.

As a further improvement of the above technical solution, a first front-back translation cylinder is arranged on the first substrate, a first clamping plate is arranged on the first front-back translation cylinder, the first front-back translation cylinder can drive the first clamping plate to move front and back, and the first clamping plate and the first pressing plate are mutually staggered in the vertical direction. Through first preceding back translation cylinder drive first splint seesaw to push away the tubular product of tandem, make the tubular product range compacter, first splint and first clamp plate are misplaced each other in vertical direction, make first splint can not take place to interfere with first clamp plate when the back and forth motion.

As a further improvement of the above technical solution, the push pipe seat includes a first push plate slidably connected to the frame, a first sliding frame connected to the first push plate, a second lifting cylinder connected to the first sliding frame, and a second press plate connected to the second lifting cylinder, the first left-right translation electric screw rod can drive the first push plate to be close to or away from the first substrate, the second lifting cylinder can drive the second press plate to move up and down, and a second pipe clamping space is formed between the second press plate and the first push plate. The second pressure plate is driven to move up and down through the second lifting cylinder, so that the pipe is pressed on the first pushing plate in the vertical direction.

As a further improvement of the above technical solution, the tube drawing base includes a second pushing plate slidably connected to the frame, a second sliding frame connected to the second pushing plate, a third lifting cylinder connected to the second sliding frame, and a third pressing plate connected to the third lifting cylinder, the second left-right translation electric screw rod can drive the second pushing plate to approach or leave the first substrate, the third lifting cylinder can drive the third pressing plate to move up and down, and a third tube clamping space is formed between the third pressing plate and the second pushing plate. And the third pressure plate is driven to move up and down through the third lifting cylinder, so that the pipe is pressed on the second pushing plate in the vertical direction.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is an overall perspective view of the present invention;

fig. 2 is another perspective view of the whole body of the present invention.

In the drawings: 100-a machine frame, 110-a pipe cutting opening, 210-a base, 220-a linear driving part, 230-a sliding plate, 240-a driving motor, 250-a cutter, 310-a speed reducer, 320-an axle tube, 330-a transmission shaft, 340-a guide rail, 350-a dust hood, 410-a first base plate, 420-a first mounting plate, 430-a first lifting cylinder, 440-a first pressing plate, 450-a first clamping plate, 510-a first left-right translation electric screw rod, 521-a first pushing plate, 522-a first sliding frame, 523-a second lifting cylinder, 524-a second pressing plate, 621-a second sliding frame and 622-a third lifting cylinder.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 and 2, a pipe cutting machine includes a frame 100, a pipe cutting plane is disposed on the frame 100, a pipe cutting opening 110 is disposed on the pipe cutting plane, and the frame 100 is provided with: a pipe feeding mechanism for transferring the workpiece to the pipe cutting opening 110; the pipe cutting mechanism comprises a base 210, a linear driving member 220, a sliding plate 230, a driving motor 240 and a cutter 250, wherein the driving motor 240 is connected to the cutter 250 in a driving manner, a rotation axis of the cutter 250 is located below a pipe cutting plane, the base 210 is connected to the rack 100, the linear driving member 220 is connected to the base 210, the sliding plate 230 is arranged on the linear driving member 220, and the linear driving member 220 can drive the cutter 250 to enter and exit the pipe cutting opening 110 through the sliding plate 230.

As can be seen from the above, a pipe cutting plane for cutting pipes is disposed on the frame 100, a pipe feeding mechanism transfers a workpiece to the pipe cutting opening 110, and then the linear driving member 220 drives the sliding plate 230 to linearly reciprocate, so as to drive the cutter 250 to enter and exit the pipe cutting opening 110 and cut the pipes, when the cutter 250 is driven to enter the pipe cutting plane from the pipe cutting opening 110, because the rotation axis of the cutter 250 is located below the pipe cutting plane, the cutter 250 contacts the pipes from the lower side of the pipes, when the pipes are cut on the pipe cutting plane, the bottom end points of the pipes are all abutted against the pipe cutting plane, and the bottom end points of the pipes are taken as reference points, and the reference points of the pipes of any size are all on the pipe cutting plane, so that the pipe cutting error during pipe cutting can be more conveniently and accurately adjusted, and the pipe cutting quality is improved.

In the above embodiment, the driving motor 240 can be directly used to drive the cutter 250 to rotate, in this embodiment, an avoiding cavity is downwardly arranged on the top surface of the base 210, the sliding plate 230 is provided with a speed reducer 310 facing the bottom surface of the avoiding cavity, the sliding plate 230 is connected with an axle tube 320, a transmission shaft 330 is arranged in the axle tube 320, the cutter 250 is connected to one end of the transmission shaft 330, and the driving motor 240 is connected to the other end of the cutter 250 through the speed reducer 310. The driving motor 240 drives the cutter 250 to rotate through the speed reducer 310, the output torque can be improved by utilizing the speed reducer 310, the required pipe cutting force can be achieved with lower power, the top surface of the base 210 is provided with an avoiding cavity for the driving motor 240, the speed reducer 310 and other components, the driving motor 240, the speed reducer 310 and other components are placed in the avoiding cavity, and the whole structure is more compact.

The linear driving member 220 mainly provides a driving force for moving in a linear direction, and in this embodiment, the linear driving member 220 is a front-back translation electric screw rod. That is, the electric screw rod for translation back and forth is used to provide the slide plate 230 with the driving force of linear reciprocating motion, and in practical application, driving members such as the electric guide rail 340, the pneumatic push rod and the hydraulic push rod can be used.

In this embodiment, the top side of the base 210 is provided with a guide rail 340, and the bottom side of the sliding plate 230 is provided with a sliding slot, and the guide rail 340 and the sliding slot are cooperatively connected. The sliding plate 230 is connected with the sliding groove through the matching of the guide rail 340, and can reciprocate on the base 210 along the linear direction, so that the stability of the sliding plate 230 during movement is improved.

In order to collect waste generated by the cutter 250, in this embodiment, a dust hood 350 is disposed on the base 210, a dust collection space with an upward opening is disposed in the dust hood 350, the bottom of the cutter 250 extends into the dust collection space, and a waste outlet communicated with the dust collection space is connected to the dust hood 350. When the cutting knife 250 cuts the pipe, the top of the cutting knife is in contact with the pipe, and waste materials generated by the pipe in the cutting process fall into the dust hood 350 and enter the waste material outlet from the dust collection space to be discharged, so that the waste materials are convenient to collect.

The tube feeding mechanism can feed the workpiece to the tube cutting opening 110, and in this embodiment, the tube feeding mechanism comprises: the pipe clamping assembly comprises a pipe clamping seat connected to the rack 100, and a first pipe clamping space is arranged in the pipe clamping seat; the push pipe assembly is positioned on the right side of the pipe clamping assembly and comprises a first left-right translation electric screw rod 510 connected to the rack 100 and a push pipe seat connected to the first left-right translation electric screw rod 510, the first left-right translation electric screw rod 510 can drive the push pipe seat to be close to or far away from the pipe clamping seat, and a second pipe clamping space is arranged in the push pipe seat; the trombone slide subassembly, it is located the left side of pressing from both sides the pipe subassembly, the trombone slide subassembly including connect in the electronic lead screw of translation about the second on the frame 100, connect in the trombone slide seat on the electronic lead screw of translation about the second, the electronic lead screw of translation can drive about the second the trombone slide seat is close to or keeps away from the pinch seat, be provided with the third in the trombone slide and press from both sides a tub space, the bottom surface in first double-layered tub space with the bottom surface in third pinch tube space forms jointly cut the pipe plane, cut a tub opening 110 and be located first double-layered tub space with between the third pinch tube space. The external pipe to be cut can be placed into the second pipe clamping space, the pipe is clamped by the pipe pushing seat and driven to approach the pipe clamping seat through the first left-right translation electric screw rod 510, the pipe enters the first pipe clamping space and the third pipe clamping space and is clamped by the pipe clamping seat and the pipe pulling seat, the pipe is cut through the back-and-forth movement of the cutter 250 between the first pipe clamping space and the third pipe clamping space, the pipe pulling seat is driven to move leftwards through the second left-right translation electric screw rod, the cut pipe is separated from the cutter 250, the friction between the cutter 250 and the pipe is reduced, so that the section of the pipe is smoother, the pipe pushing seat and the pipe pulling seat are reset, the pipe pushing and pipe cutting actions are repeated, when the pipe in the pipe pushing seat is short, one end of the pipe penetrates through the first pipe clamping space and enters the third pipe clamping space, but the pipe cannot be pushed to the right, the pipe is clamped by the pipe pulling seat and then pulled leftwards continuously, the pipe can be conveyed in place, then the pipe clamping seat is used for clamping the pipe, and finally the pipe is cut through the cutter 250, so that the waste of the tailings of the pipe can be reduced, the economic benefit of production is improved, the pipe is more stable during pipe cutting, and the pipe cutting quality is improved.

As a further embodiment of the pipe clamping seat structure, the pipe clamping seat includes a first substrate 410 and a first mounting plate 420 disposed on the rack 100, a first lifting cylinder 430 connected to the first mounting plate 420, and a first pressing plate 440 connected to the first lifting cylinder 430, the first mounting plate 420 is located above the first substrate 410, the first lifting cylinder 430 can drive the first pressing plate 440 to move up and down, and a first pipe clamping space is formed between the first pressing plate 440 and the first substrate 410. The first lifting cylinder 430 drives the first pressing plate 440 to move up and down, so that the tube is pressed on the first substrate 410 in the vertical direction.

In order to arrange and arrange the pipes to be cut in the front-back direction, in this embodiment, a first front-back translation cylinder is arranged on the first substrate 410, a first clamping plate 450 is arranged on the first front-back translation cylinder, the first front-back translation cylinder can drive the first clamping plate 450 to move front and back, and the first clamping plate 450 and the first pressing plate 440 are staggered in the vertical direction. The first clamping plate 450 is driven to move back and forth through the first front and rear translation cylinders, so that pipes arranged back and forth are pushed tightly, the arrangement of the pipes is more compact, the first clamping plate 450 and the first pressing plate 440 are staggered in the vertical direction, and the first clamping plate 450 cannot interfere with the first pressing plate 440 when moving back and forth.

As a further embodiment of the tube pushing seat structure, the tube pushing seat includes a first pushing plate 521 slidably connected to the frame 100, a first sliding frame 522 connected to the first pushing plate 521, a second lifting cylinder 523 connected to the first sliding frame 522, and a second pressing plate 524 connected to the second lifting cylinder 523, the first left-right translation electric screw 510 can drive the first pushing plate 521 to approach or separate from the first substrate 410, the second lifting cylinder 523 can drive the second pressing plate 524 to move up and down, and a second tube clamping space is formed between the second pressing plate 524 and the first pushing plate 521. The second lifting cylinder 523 drives the second pressing plate 524 to move up and down, so that the pipe is pressed on the first pushing plate 521 in the vertical direction.

As a further embodiment of the tube drawing base structure, the tube drawing base includes a second pushing plate slidably connected to the frame 100, a second sliding frame 621 connected to the second pushing plate, a third lifting cylinder 622 connected to the second sliding frame 621, and a third pressing plate connected to the third lifting cylinder 622, the second left-right translation electric screw rod can drive the second pushing plate to approach or leave the first substrate 410, the third lifting cylinder 622 can drive the third pressing plate to move up and down, and a third tube clamping space is formed between the third pressing plate and the second pushing plate. The third lifting cylinder 622 drives the third pressing plate to move up and down, so that the pipe is pressed on the second pushing plate in the vertical direction.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A pipe cutting machine is characterized in that: including frame (100), be provided with on frame (100) and cut a tub plane, it cuts tub opening (110) to be provided with on the tub plane to cut, be provided with on frame (100):

a pipe feeding mechanism for transferring the workpiece to the pipe cutting opening (110);

pipe cutting mechanism, it includes base (210), linear drive spare (220), slide (230), driving motor (240) and cutter (250), driving motor (240) drive connect in cutter (250), the axis of rotation of cutter (250) is located cut the planar below of pipe, base (210) connect in on frame (100), linear drive spare (220) connect in on base (210), slide (230) set up in on linear drive spare (220), linear drive spare (220) accessible slide (230) drive cutter (250) pass in and out cut pipe opening (110).

2. The pipe cutter of claim 1, wherein: the top surface of base (210) is provided with downwards and dodges the cavity, slide (230) just right dodge the bottom surface of cavity and be provided with reduction gear (310), be connected with central siphon (320) on slide (230), be provided with transmission shaft (330) in central siphon (320), cutter (250) connect in the one end of transmission shaft (330), driving motor (240) pass through reduction gear (310) connect in the other end of cutter (250).

3. The pipe cutter of claim 1, wherein: the linear driving piece (220) is an electric screw rod capable of translating back and forth.

4. The pipe cutter of claim 1, wherein: the top side of the base (210) is provided with a guide rail (340), the bottom side of the sliding plate (230) is provided with a sliding groove, and the guide rail (340) is connected with the sliding groove in a matched mode.

5. The pipe cutter of claim 1, wherein: be provided with suction hood (350) on base (210), the ascending dust absorption space of opening has in suction hood (350), the bottom of cutter (250) stretches into in the dust absorption space, be connected with on suction hood (350) with the waste outlet of dust absorption space intercommunication each other.

6. The pipe cutter of claim 1, wherein: the pipe conveying mechanism comprises:

the pipe clamping assembly comprises a pipe clamping seat connected to the rack (100), and a first pipe clamping space is arranged in the pipe clamping seat;

the push pipe assembly is positioned on the right side of the pipe clamping assembly and comprises a first left-right translation electric screw rod (510) connected to the rack (100) and a push pipe seat connected to the first left-right translation electric screw rod (510), the first left-right translation electric screw rod (510) can drive the push pipe seat to be close to or far away from the pipe clamping seat, and a second pipe clamping space is arranged in the push pipe seat;

the trombone slide subassembly, it is located the left side of pressing from both sides the pipe subassembly, the trombone slide subassembly including connect in the electronic lead screw of translation about the second on frame (100), connect in the electronic lead screw of translation about the second on the electronic lead screw of translation, the electronic lead screw of translation can drive about the second the trombone slide is close to or keeps away from the pinch roll seat, be provided with the third in the trombone slide and press from both sides a tub space, the bottom surface in first double-layered tub space with the bottom surface in third pinch roll space forms jointly cut the pipe plane, cut a tub opening (110) and be located first double-layered tub space with between the third pinch roll space.

7. The pipe cutter of claim 6, wherein: the pipe clamping seat comprises a first base plate (410) and a first mounting plate (420) arranged on the rack (100), a first lifting cylinder (430) connected to the first mounting plate (420), and a first pressing plate (440) connected to the first lifting cylinder (430), wherein the first mounting plate (420) is located above the first base plate (410), the first lifting cylinder (430) can drive the first pressing plate (440) to move up and down, and a first pipe clamping space is formed between the first pressing plate (440) and the first base plate (410).

8. The pipe cutter of claim 7, wherein: the first base plate (410) is provided with a first front-back translation cylinder, the first front-back translation cylinder is provided with a first clamping plate (450), the first front-back translation cylinder can drive the first clamping plate (450) to move front and back, and the first clamping plate (450) and the first pressing plate (440) are staggered in the vertical direction.

9. The pipe cutter of claim 7, wherein: the push pipe seat comprises a first push plate (521) connected to the rack (100) in a sliding mode, a first sliding frame (522) connected to the first push plate (521), a second lifting cylinder (523) connected to the first sliding frame (522), and a second press plate (524) connected to the second lifting cylinder (523), the first left-right translation electric screw rod (510) can drive the first push plate (521) to be close to or far away from the first substrate (410), the second lifting cylinder (523) can drive the second press plate (524) to move up and down, and a second pipe clamping space is formed between the second press plate (524) and the first push plate (521).

10. The pipe cutter of claim 7, wherein: the trombone slide mount include sliding connection in second push plate on frame (100), connect in second sliding frame (621) on the second push plate, connect in third lift cylinder (622) on second sliding frame (621), connect in third clamp plate on third lift cylinder (622), the electronic lead screw of translation can drive about the second push plate is close to or keeps away from first base plate (410), third lift cylinder (622) can drive third clamp plate up-and-down motion, the third clamp plate with form between the second push plate the third presss from both sides a tub space.