CN210988522U - Vamp upward-pulling mechanism - Google Patents

Abstract

The utility model discloses a vamp pulling-up mechanism, which comprises a frame, a driving device, a claw mechanism and a control unit; the rack is provided with a first proximity switch for sensing the up-and-down moving position of the claw mechanism, the driving device is arranged on the rack, and the driving device drives the claw mechanism to lift up and down; the claw mechanism is provided with a claw and a claw clamping control device for controlling the claw to open and close automatically; the first proximity switch, the driving device and the claw clamping control device are respectively and electrically connected to the control unit; so, through the improvement design to vamp pull-up mechanism for its during operation is more accurate, safer to the lift location and the judgement of claw, has solved among the traditional art vamp pull-up mechanism when carrying out the pull-up operation precision not good enough and has leaded to the poor problem of control uniformity to claw lift control and centre gripping action, has reduced the product defect rate by a wide margin, has improved the quality of product.

Description

Vamp upward-pulling mechanism

Technical Field

The utility model relates to a shoemaking machine field technique especially indicates a vamp pull-up mechanism, and it is main but not limited to back group machine.

Background

The shoe upper binding machine is common mechanical production equipment in the shoe automatic production industry, processes a surface material and a mid-sole binding, and sticks an upper surface and a mid-sole together; in the back group machine in having now, most vamp pull-up mechanism when carrying out the pull-up operation, the precision is not good enough, and is poor to the control uniformity of claw lifting control and centre gripping action, and the flaw appears easily in the product after the completion, has limited shoes processingquality, also has the operation precision of few partial vamp pull-up mechanism to promote to some extent, but it has the complicated scheduling problem of structure, is unfavorable for the popularization and application of equipment. In addition, in actual operation, the claw collides with the sweeping knife when descending, and the equipment is easily damaged.

Therefore, a new technical solution needs to be researched to solve the problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a shoe upper pulling mechanism, which is designed by improving the pulling mechanism of the centering back upper machine, so that the lifting location and judgment of the claw during operation are more accurate and safer, and the problem of poor control consistency of lifting control and clamping action of the claw due to poor precision during the pulling operation of the shoe upper pulling mechanism in the conventional technology is solved, thereby greatly reducing the defect rate of products, improving the quality of the products, and meanwhile, the structure is simple, the design is ingenious and reasonable, and the popularization and application of the equipment are facilitated;

in order to realize the purpose, the utility model adopts the following technical scheme:

a vamp pull-up mechanism comprises a frame, a driving device, a claw mechanism and a control unit;

the rack is provided with a first proximity switch for sensing the up-and-down moving position of the claw mechanism;

the driving device is arranged on the rack and drives the claw mechanism to lift up and down;

the claw mechanism is provided with a claw and a claw clamping control device for controlling the claw to open and close automatically; the first proximity switch, the driving device and the claw clamping control device are respectively and electrically connected to the control unit.

Preferably, the claw mechanism is connected with a movable rod, the movable rod is provided with an adjusting block, and the first proximity switch senses the position of the claw mechanism through sensing the adjusting block.

Preferably, the movable rod is mounted on the claw mechanism in a vertically adjustable displacement manner, and/or the adjusting block is mounted on the movable rod in a vertically adjustable displacement manner.

As a preferred scheme, the rack is provided with platform structures at two ends and a rack body arranged at the rear side of the platform structures, and the platform structures at the two ends are respectively arranged at the front sides of the two ends of the rack body; the platform structure is provided with a yielding hole; the driving device and the claw mechanisms are arranged in two numbers, the driving device is installed on the platform structure of the rack respectively, the lower end of the driving device is connected with a driving piece which penetrates through the yielding hole, and the driving piece acts on the corresponding claw mechanisms.

Preferably, the claw mechanism comprises a base part, a middle part and a claw part; the base of the claw mechanism is connected with a driving device; the claw is arranged on the claw part;

the middle part is provided with a front-back displacement control mechanism and/or a left-right displacement control mechanism so that the claw part can displace front-back and/or left-right relative to the base part.

As a preferable scheme, a first adjusting screw rod for adjusting the claw part to move back and forth, a first moving slide block sliding along the first adjusting screw rod, a second adjusting screw rod for adjusting the claw part to move left and right, and a second moving slide block sliding along the second adjusting screw rod are arranged in the middle of the claw mechanism;

the first adjusting screw rod can be rotatably arranged on the base part, the first movable sliding block is sleeved on the first adjusting screw rod in a threaded manner, and when the first adjusting screw rod rotates, the first movable sliding block slides along the first adjusting screw rod;

the second adjusting screw rod can be rotatably arranged on the first moving slide block, the second moving slide block is sleeved on the second adjusting screw rod in a threaded manner, and when the second adjusting screw rod rotates, the second moving slide block slides along the second adjusting screw rod.

As a preferred scheme, one end of each of the first adjusting screw rod and the second adjusting screw rod is respectively connected with a manual operation knob;

or one end of the first adjusting screw rod and one end of the second adjusting screw rod are respectively connected with a motor, and the motors are connected to the control unit.

Preferably, the claw mechanism further comprises a support plate, a claw clamping oil hydraulic cylinder and a movable block; the claw clamping control device is a claw clamping oil hydraulic cylinder, and the lower end of the claw clamping control device is provided with a piston rod; the movable block is connected to the piston rod, the slant groove that two splayed arranged has on the movable block, the claw has left claw, right claw, and the position is in the same place in the common pin joint between the upper and lower ends between left claw, right claw, and the upper end between them is connected in the corresponding slant groove of movable block through the connecting pin respectively, the flexible connecting pin that makes of the piston rod that the claw presss from both sides tight hydraulic cylinder slides in the slant inslot to the lower extreme of control left claw, right claw is closed, is opened.

Preferably, a second proximity switch for avoiding collision between the claw mechanism and the knife sweeping mechanism is arranged on the outer side of the frame, and the second proximity switch is electrically connected with the control unit.

Preferably, the second proximity switch is installed on the left side and/or the right side of the frame in a front-back displacement adjusting mode.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, by technical scheme can know, it is mainly:

the utility model provides a, through the improvement design of the pull-up mechanism of centering back group machine, make its during operation to the lift location of claw and judge more accurately, safer, solved among the traditional art vamp pull-up mechanism accurate nature lead to the poor problem of control uniformity to claw lift control and centre gripping action when carrying out the pull-up operation, reduced the product defect rate by a wide margin, improved the quality of product, and simultaneously, its simple structure, design benefit is reasonable, be favorable to the popularization and application of equipment.

Secondly, the improved design of the pull-up mechanism of the middle and back upper machine, so that the shoe making machine, mainly the middle and back upper machine, can be better suitable for full-automatic operation, avoids machine damage caused by improper manual operation, prolongs the service life of the machine, and simultaneously enables the working operation of the machine to be more intelligent.

And thirdly, the second proximity switches are arranged on the outer sides of the two ends of the rack, so that the position relation between the claw mechanism and the sweeping knife can be sensed, and the problem that the claw collides with the sweeping knife when descending in the traditional technology is effectively solved.

Fourthly, the claw mechanism of the vamp pulling-up mechanism of the utility model can be adjusted by the displacement from front to back and from left to right according to the requirement, thereby flexibly meeting the requirements of different shoe processing procedures; and the overall structure of the vamp pull-up mechanism has the advantages of easy assembly and positioning, good compactness and the like, occupies small space, is convenient to process, is also favorable for the arrangement management of equipment in a workshop, and has strong practicability.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is an assembled perspective view of an embodiment of the present invention;

FIG. 2 is another perspective assembly view of the embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the present invention;

fig. 4 is a schematic view of a driving device according to an embodiment of the present invention;

fig. 5 is a schematic view of a housing according to an embodiment of the present invention;

FIG. 6 is an exploded view of the claw mechanism according to the embodiment of the present invention;

FIG. 7 is an exploded view of another angular claw mechanism according to an embodiment of the present invention;

fig. 8 is a first cross-sectional view of the claw mechanism in an embodiment of the invention;

fig. 9 is a second cross-sectional view of the claw mechanism in an embodiment of the invention;

fig. 10 is a third schematic cross-sectional view of a claw mechanism in an embodiment of the invention;

fig. 11 is a perspective view of a movable block according to an embodiment of the present invention;

fig. 12 is a general electrical control block diagram of an embodiment of the present invention.

The attached drawings indicate the following:

10. frame 101, first proximity switch

102. Second proximity switch 11, platform structure

12. Abdicating hole 13, set square

14. Frame body 20 and drive device

21. Drive member 22, base plate

30. Claw mechanism 31, base

311. Movable rod 312 and adjusting block

32. Middle part 321, first adjusting screw rod

322. First movable slide block 323 and second adjusting screw rod

324. Second movable slider 33, claw portion

331. Supporting plate 332 and claw clamping oil cylinder

333. Claw 3331, tooth structure

334. Movable block 3341 and inclined groove

40. Control unit 50, the mid upper lasting device.

Detailed Description

Fig. 1 to 12 show a specific structure of an embodiment of the present invention.

The upper pulling mechanism of the utility model can be widely applied to shoe making machines, which are mainly but not limited to middle and back upper machines, and the upper pulling mechanism is used for the upper pulling control of heelpiece on the middle and back upper machines.

The vamp pulling-up mechanism comprises a frame 10, a driving device 20, a claw mechanism 30 and a control unit 40; the vamp pulling-up mechanism is arranged on a middle and back upper machine through a frame 10, the driving device 20 is arranged on the frame 10, and the driving device 20 drives the claw mechanism 30 to lift up and down; the frame 10 has a first proximity switch 101, and the first proximity switch 101 can sense the up-and-down movement position of the claw mechanism 30. The first proximity switch 101 and the driving device 20 are electrically connected to the control unit 40.

The driving part 21 of the driving device 20 is arranged at the lower end of the driving device 20, the uppermost end of the claw mechanism 30 is a base part 31, the claw mechanism 30 is connected with the driving part 21 of the driving device 20 through the base part 31, the claw mechanism 30 is provided with a claw 333, and the claw 333 is used for clamping the shoe upper; when the shoe upper pulling mechanism pulls up the shoe upper, the driving device 20 drives the claw mechanism 30 to descend, when the claw mechanism 30 descends to a specified position, the first proximity switch 101 is sensed to send a feedback signal to the control unit 40, the control unit 40 controls the driving device 20 to stop driving the claw mechanism 30 to descend, after descending is stopped, the claw mechanism 30 clamps the shoe upper, a time point when the first proximity switch 101 is sensed is used as a reference point for the control unit 40 to manage clamping time of the claw mechanism 30, then the control unit 40 controls the driving device 20 to drive the claw mechanism 30 to ascend, in the ascending process, the claw mechanism 30 pulls up the shoe upper, a timer is used for controlling the pulling-up to inch, after the inch time is up, the pulling-up is completed, and the claw mechanism 30 loosens the shoe upper, the control unit 40 controls the driving device 20 to drive the pawl mechanism 30 to ascend to the initial position. When the first proximity switch 101 is no longer sensed, a feedback signal is sent to the control unit 40, and the control unit 40 can control the mid-back upper machine to perform the upper forming operation (here, the mid-back upper forming device 50 performs the upper forming operation).

The machine frame 10 is designed to be bilaterally symmetrical, so that the left claw mechanism and the right claw mechanism can be arranged at two ends of the same machine frame 10, and the left end and the right end of the vamp of the shoe are pulled up simultaneously, thereby saving the working time, improving the efficiency and improving the product quality; frame 10 has the platform structure 11 that is located both ends and installs in the frame body 14 of 11 rear sides of platform structure, and the both ends front side at frame body 14 is installed respectively to the platform structure 11 at both ends, there is set-square 13 to strengthen joint strength between platform structure 11 and the frame body 14, platform structure 11 has the mounting hole of installation drive arrangement 20 and supplies the hole 12 of stepping down that drive arrangement 20's driving piece 21 passed.

Two driving devices 20 and two claw mechanisms 30 are arranged; the driving device 20 is mounted on the platform structure 11 of the frame 10, the driving device 20 may be designed as an oil hydraulic cylinder, and then the driving member 21 is a piston rod, the oil hydraulic cylinder is used for controlling the claw mechanism 30 to move up and down, and is referred to as a claw up-down oil hydraulic cylinder; the lower end of the upper hydraulic cylinder and the lower hydraulic cylinder of the claw is provided with a piston rod, and the piston rod passes through the abdicating hole 12 and is connected with the base 31 of the claw mechanism 30.

The claw mechanism 30 comprises a base part 31, a middle part 32 and a claw part 33; one side of the base 31 of the claw mechanism 30 is fixedly connected with a piston rod of a claw up-down oil hydraulic cylinder; the other side of the base 31 of the claw mechanism 30 is connected with a movable rod 311, the movable rod 311 passes through the bottom plate 22 where the driving device 20 is located, an adjusting block 312 is installed on the movable rod 311, meanwhile, the first proximity switch 101 is installed on the bottom plate 22 near the movable rod 311, and the position of the adjusting block 312 can be sensed by the first proximity switch 101;

the intermediate portion 32 has a front-rear displacement control mechanism and/or a left-right displacement control mechanism so that the claw portion 33 is displaceable front-rear and/or left-right relative to the base portion 31. Here, a first adjusting screw 321 for moving the adjusting claw part 33 back and forth, a first moving slider 322 for sliding along the first adjusting screw 321, a second adjusting screw 323 for moving the adjusting claw part 33 back and forth, and a second moving slider 324 for sliding along the second adjusting screw 323 are provided in the middle part 32 of the claw mechanism 30; the first adjusting screw rod 321 is rotatably installed on the base 31, the first moving slider 322 is threadedly sleeved on the first adjusting screw rod 321, and when the first adjusting screw rod 321 rotates, the first moving slider 322 slides along the first adjusting screw rod 321; the second adjusting screw rod 323 can be rotatably installed on the first moving slide block 322, the second moving slide block 324 is threadedly sleeved on the second adjusting screw rod 323, and when the second adjusting screw rod 323 rotates, the second moving slide block 324 slides along the second adjusting screw rod 323. The first adjusting screw rod 321 enables the claw part 33 to be adjusted by front and back displacement relative to the base part 31 through the first moving slide block 322, and the second adjusting screw rod 323 enables the claw part 33 to be adjusted by left and right displacement relative to the base part 31 through the second moving slide block 324, and also enables the claw part to be adjusted by left and right displacement relative to the first moving slide block 322. The knobs of the first adjusting screw rod 321 and the second adjusting screw rod 323 are arranged outside the middle part 32 of the claw mechanism 30, so that the manual rotation adjustment of people is facilitated, and the processing requirements of different shoes are met. Of course, the knob can also be designed as a motor, the motor is connected with the control unit 40, and the control unit 40 controls the forward and backward rotation of the motor to realize the forward and backward and left and right displacement adjustment of the claw part 33, so that the equipment operation is more accurate, the intelligent operation is realized, and the product quality is favorably improved.

The claw portion 33 is connected to the middle portion 32 of the claw mechanism 30 by a connecting member, specifically: a supporting plate 331 of the claw portion 33 is connected to the second movable slider 324, a claw clamping hydraulic cylinder 332 and a claw 333 are mounted on the supporting plate 331, and the claw clamping hydraulic cylinder 332 serves as a claw clamping control device for controlling the opening and closing of the claw 333; the lower end of the claw clamping oil hydraulic cylinder 332 is provided with a piston rod, the piston rod is connected with a movable block 334, the movable block 334 is provided with two inclined grooves 3341 (specifically, an inverted splayed shape), the lower end of the claw part 33 is provided with a claw 333, the claw 333 is provided with a left claw and a right claw, the upper end and the lower end of the left claw and the right claw are jointly pivoted together, the movable block 334 is respectively connected with the upper ends of the left claw and the right claw through connecting pins on the inclined grooves 3341, the connecting pins slide in the inclined grooves 3341, and the expansion and contraction of the piston rod of the claw clamping oil hydraulic cylinder 332 directly controls the closing and the opening of the claw 333. Here, the claw 333 has an axial hole in the middle thereof, the axial hole is provided with a support shaft, the claw 333 is connected to the support plate 331 through the support shaft, the claw 333 is connected to the connection pin through a mounting hole at the upper end thereof, the lower end clamping portion of the claw 333 is formed to have a wide surface and a tooth structure 3331, and the design of the wide surface of the clamping portion of the claw 333 and the tooth structure 3331 can help the claw 333 to clamp the upper surface of the shoe more stably and uniformly with force, thereby performing the upward pulling operation.

When the claw clamping oil hydraulic cylinder 332 drives the piston rod to move downwards, the movable block 334 moves downwards, the connecting pin in the inclined groove 3341 moves upwards, and the inclined groove 3341 has a guiding and limiting effect on the movement of the connecting pin, so that the tail part of the claw 333 extends outwards, and the head part of the claw 333 engages inwards (namely the claw 333 performs a clamping action); when the claw clamping cylinder 332 drives the piston rod to move upwards, the movable block 334 moves upwards, the connecting pin in the inclined groove 3341 moves downwards, the inclined groove 3341 has a guiding and limiting effect on the movement of the connecting pin, the tail of the claw 333 is inwards closed, and the head of the claw 333 is outwards expanded (namely the claw 333 is loosened).

Next, the operation process of the shoe upper pulling mechanism with the above-mentioned specific structure is described as follows:

when the vamp pull-up mechanism executes a descending operation, the claw up-down hydraulic cylinder drives the claw mechanism 30 to move downwards through the piston rod thereof, and the movable rod 311 is fixedly connected with the claw mechanism 30, so that the movable rod 311 moves downwards along with the claw mechanism 30, the adjusting block 312 on the movable rod 311 also moves downwards, when the first proximity switch 101 senses that the position of the adjusting block 312 reaches a set position, a feedback signal is sent, the driving device 20 stops driving the claw mechanism 30 to descend, and at the moment, the claw clamping hydraulic cylinder 332 drives the claw 333 to clamp the vamp, (the time point of the action of the claw clamping hydraulic cylinder 332 can be set by referring to the time point of the sensing of the first proximity switch 101); when the lifting operation is executed, the claw up-down hydraulic cylinder drives the claw mechanism 30 to move upwards through the piston rod thereof, and the movable rod 311 is fixedly connected with the claw mechanism 30, so that the movable rod 311 moves upwards along with the claw mechanism 30, and the adjusting block 312 on the movable rod 311 also moves upwards; in the process of lifting, the claw mechanism 30 pulls the vamp upwards, a timer is used for controlling the upwards pulling inching, after the inching time is up, the upwards pulling operation is completed, the claw clamping oil pressure cylinder 332 is controlled by the control unit 40 to drive the movable block 334 to move upwards, the claw 333 is released, then the claw up-down oil pressure cylinder drives the claw 333 to lift to a specified position, the driving device 20 stops driving the claw mechanism 30 to lift, and at the moment, the claw mechanism returns to the initial state. When the first proximity switch 101 no longer senses the adjustment block 312, a feedback signal is sent to the control unit 40, and the control unit 40 can control the mid-back upper machine to perform the upper forming operation.

Preferably, the second proximity switches 102 are installed on the outer sides of the two ends of the frame 10, the second proximity switches 102 can sense the position relationship between the claw mechanism 30 and the wiper, and when any one of the left and right second proximity switches 102 is sensed (i.e. when the relative position between the claw mechanism and the wiper is not safe), the claw mechanism 30 stops or does not perform the lowering operation; when the left and right second proximity switches 102 are not sensed at the same time, the claw mechanism 30 performs the lowering operation; it should be added that when the sweep knife is in the backward mode, the limitation is not imposed.

It should be noted that: the driving device 20, the claw mechanism 30, the first proximity switch 101 and the second proximity switch 102 are arranged at two ends of the frame 10, and when the machine works, the left claw mechanism and the right claw mechanism act synchronously, so that vamp displacement is avoided, and the working efficiency is improved.

The utility model is mainly designed by the improvement of the pulling-up mechanism of the centering back upper machine, so that the lifting positioning and judgment of the claw during the working process are more accurate and safer, the problem of poor control consistency of lifting control and clamping action of the claw caused by poor accuracy when the pulling-up mechanism is used for pulling up in the traditional technology is solved, the product defect rate is greatly reduced, the product quality is improved, and meanwhile, the structure is simple, the design is ingenious and reasonable, and the popularization and the application of the equipment are facilitated;

secondly, the improved design of the pull-up mechanism of the middle and back upper machine enables the shoe making machine, mainly the middle and back upper machine, to be better suitable for full-automatic operation, avoids machine damage caused by improper manual operation, prolongs the service life of the machine, and enables the working operation of the machine to be more intelligent;

moreover, the second proximity switches are arranged on the outer sides of the two ends of the rack, so that the position relation between the claw mechanism and the sweeping knife can be sensed, and the problem that the claw collides with the sweeping knife when descending in the traditional technology is effectively solved;

in addition, the claw mechanism of the vamp pulling-up mechanism of the utility model can be adjusted by the front and back displacement and the left and right displacement according to the requirement, thereby flexibly meeting the requirements of different shoe processing procedures; and the overall structure of the vamp pull-up mechanism has the advantages of easy assembly and positioning, good compactness and the like, occupies small space, is convenient to process, is also favorable for the arrangement management of equipment in a workshop, and has strong practicability.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (10)

1. A vamp pull-up mechanism which characterized in that: comprises a frame (10), a driving device (20), a claw mechanism (30) and a control unit (40);

the rack (10) is provided with a first proximity switch (101) for sensing the up-down moving position of the claw mechanism (30);

the driving device (20) is arranged on the rack (10), and the driving device (20) drives the claw mechanism (30) to lift up and down;

the claw mechanism (30) is provided with a claw (333) and a claw clamping control device for controlling the claw (333) to automatically open and close; the first proximity switch (101), the driving device (20) and the claw clamping control device are respectively and electrically connected to the control unit (40).

2. An upper pull-up mechanism according to claim 1, wherein: the claw mechanism (30) is connected with a movable rod (311), an adjusting block (312) is arranged on the movable rod (311), and the first proximity switch (101) senses the position of the claw mechanism (30) through sensing the adjusting block (312).

3. A shoe upper pull-up mechanism according to claim 2, wherein: the movable rod (311) can be arranged on the claw mechanism (30) in a vertically adjustable displacement mode, and/or the adjusting block (312) can be arranged on the movable rod (311) in a vertically adjustable displacement mode.

4. An upper pull-up mechanism according to claim 1, wherein: the rack (10) is provided with platform structures (11) positioned at two ends and a rack body (14) arranged at the rear side of the platform structures (11), and the platform structures (11) at the two ends are respectively arranged at the front sides of the two ends of the rack body (14); the platform structure (11) is provided with a yielding hole (12); drive arrangement (20), claw mechanism (30) are provided with two, install respectively on platform structure (11) of frame (10) drive arrangement (20), drive arrangement (20) lower extreme is connected with driving piece (21) and passes hole (12) of stepping down, driving piece (21) act on corresponding claw mechanism (30).

5. An upper pull-up mechanism according to claim 1, wherein: the claw mechanism (30) comprises a base part (31), a middle part (32) and a claw part (33); the base (31) of the claw mechanism (30) is connected with a driving device (20); the claw (333) is arranged on the claw part (33);

the intermediate section (32) has a front-rear displacement control mechanism and/or a left-right displacement control mechanism so that the claw section (33) is displaceable front-rear and/or left-right relative to the base section (31).

6. An upper pull-up mechanism according to claim 5, wherein: a first adjusting screw rod (321) for adjusting the claw part (33) to move back and forth, a first moving slide block (322) sliding along the first adjusting screw rod (321), a second adjusting screw rod (323) for adjusting the claw part (33) to move left and right, and a second moving slide block (324) sliding along the second adjusting screw rod (323) are arranged in the middle part (32) of the claw mechanism (30);

the first adjusting screw rod (321) can be rotatably arranged on the base part (31), the first moving sliding block (322) is sleeved on the first adjusting screw rod (321) in a threaded manner, and when the first adjusting screw rod (321) rotates, the first moving sliding block (322) slides along the first adjusting screw rod (321);

the second adjusting screw rod (323) can be rotatably arranged on the first moving slide block (322), the second moving slide block (324) is sleeved on the second adjusting screw rod (323) in a threaded manner, and when the second adjusting screw rod (323) rotates, the second moving slide block (324) slides along the second adjusting screw rod (323).

7. An upper pull-up mechanism according to claim 6, wherein: one end of the first adjusting screw rod (321) and one end of the second adjusting screw rod (323) are respectively connected with a manual operation knob;

or one ends of the first adjusting screw rod (321) and the second adjusting screw rod (323) are respectively connected with a motor, and the motors are connected to the control unit (40).

8. An upper pull-up mechanism according to claim 1, wherein: the claw mechanism (30) is also provided with a supporting plate (331), a claw clamping oil hydraulic cylinder (332) and a movable block (334); the claw clamping control device is a claw clamping oil hydraulic cylinder (332), and the lower end of the claw clamping control device is provided with a piston rod; the movable block (334) is connected to the piston rod, have two slant grooves (3341) that the splayed was arranged that fall on the movable block (334), claw (333) have left claw, right claw, and the position is in the same place in the common pin joint between the upper and lower extreme between left claw, right claw, and the upper end of both is connected in corresponding slant groove (3341) of movable block (334) through the connecting pin respectively, the flexible messenger connecting pin that the piston rod that the claw pressed from both sides tight hydraulic cylinder (332) slides in slant groove (3341) to the lower extreme closure of control left claw, right claw, is opened.

9. An upper pull-up mechanism according to claim 1, wherein: and a second proximity switch (102) for avoiding the collision of the claw mechanism (30) and the knife sweeping mechanism is arranged on the outer side of the frame (10), and the second proximity switch (102) is electrically connected to the control unit (40).

10. An upper pull-up mechanism according to claim 9, wherein: the second proximity switch (102) can be arranged on the left side and/or the right side of the machine frame (10) in a front-back displacement adjusting mode.

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