CN219928961U

CN219928961U - Glass transfer device

Info

Publication number: CN219928961U
Application number: CN202320417939.2U
Authority: CN
Inventors: 黄家明; 张云辉; 胡飞; 陈明权
Original assignee: Biel Crystal Manufactory Huizhou Ltd
Current assignee: Biel Crystal Manufactory Huizhou Ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-10-31
Anticipated expiration: 2033-03-07

Abstract

The glass transfer device comprises an X-axis transfer module, wherein one side of the X-axis transfer module is connected with a third mounting substrate, and one side of the third mounting substrate is provided with a feeding, taking and placing mechanism and a discharging, inserting and placing mechanism. The blanking inserting and placing mechanism comprises a first protection box, a blanking cylinder and a first vacuum generator, wherein a rotary cylinder is arranged at the lower end of a piston rod of the blanking cylinder, a rotating shaft of the rotary cylinder is connected with a blanking sucker assembly, and the blanking sucker assembly is connected with the first vacuum generator through a hose; the blanking cylinder is used for driving the rotary cylinder to linearly move in the vertical direction, and the rotary cylinder is used for driving the blanking sucker assembly to positively or reversely rotate around a straight line perpendicular to the vertical plane by a preset angle. Then, only the preset angle is set to 90 degrees, and the glass sheets horizontally placed can be adjusted to be vertically placed through the rotary cylinder, so that the glass can be vertically inserted and placed, and the glass is suitable for production and processing of the grinding-free glass.

Description

Glass transfer device

Technical Field

The utility model relates to the technical field of engraving and milling machines, in particular to a glass transferring device.

Background

In the course of working glass, it is generally necessary to simultaneously transfer a product to be worked (glass) and a worked product (glass) from the respective previous stations to the respective next stations by means of a glass transfer device. Referring to fig. 1, the existing glass transfer device is generally composed of an X-axis transfer module, a feeding and picking and placing mechanism, a discharging and picking and placing mechanism, a connecting plate and the like, wherein the feeding and picking and placing mechanism and the discharging and picking and placing mechanism have the same structure and comprise a cylinder and a sucker assembly, and the cylinder drives the sucker assembly to move in the direction perpendicular to the X-axis, so that glass products on corresponding stations are sucked. In addition, the feeding taking and placing mechanism and the discharging taking and placing mechanism are respectively installed and fixed on the left side and the right side of the connecting plate, meanwhile, the connecting plate is connected with the X-axis transferring module, so that the X-axis transferring module drives the feeding taking and placing mechanism and the discharging taking and placing mechanism to move in the X-axis direction at the same time through the connecting plate, and the feeding taking and placing mechanism and the discharging taking and placing mechanism are enabled to move in the X-axis direction at the same time. Then, when the X-axis transfer module moves the feeding taking and placing mechanism and the discharging taking and placing mechanism to the corresponding respective taking positions, the feeding taking and placing mechanism and the discharging taking and placing mechanism can simultaneously absorb the product (glass) to be processed and the processed product (glass) respectively, and then when the X-axis transfer module moves the feeding taking and placing mechanism and the discharging taking and placing mechanism to the corresponding respective discharging positions, the feeding taking and placing mechanism and the discharging taking and placing mechanism can simultaneously release the product (glass) to be processed and the processed product (glass) to the adsorption jig or the receiving device at the respective corresponding discharging positions, so that the simultaneous transfer of the product (glass) to be processed and the processed product (glass) is realized.

The glass transfer device of the prior art has a problem in that it is not suitable for processing of the abrasion-free glass. The reason for this is that for a mill-free glass, the finished glass needs to be placed vertically into the corresponding receiving device, but cannot be stacked horizontally. However, the unloading picking and placing mechanism of the glass transferring device in the prior art cannot realize the vertical placement of the processed glass.

In order to solve the technical problems, the utility model designs a novel glass transfer device.

Disclosure of Invention

The utility model aims to provide a glass transfer device which can realize vertical insertion and placement of glass, thereby being suitable for production and processing of grinding-free glass.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the glass transfer device comprises an X-axis transfer module, wherein one side of the X-axis transfer module is connected with a third mounting substrate, one side of the third mounting substrate, which is away from the X-axis transfer module, is provided with a feeding, taking and placing mechanism and a discharging, inserting and placing mechanism, and is characterized in that the discharging, inserting and placing mechanism comprises a first protection box fixedly connected with one side, which is away from the X-axis transfer module, of the third mounting substrate, a discharging cylinder and a first vacuum generator are arranged in the first protection box, a piston rod of the discharging cylinder extends downwards from the first protection box, the lower end of the discharging cylinder is provided with a rotary cylinder, and a rotary shaft of the rotary cylinder is connected with a discharging sucker assembly through a first connecting assembly, and the discharging sucker assembly is connected with the first vacuum generator through a hose; the blanking cylinder is used for driving the rotary cylinder to linearly move in the vertical direction, and the rotary cylinder is used for driving the blanking sucker assembly to positively or reversely rotate around a straight line perpendicular to the vertical plane by a preset angle.

In the glass transfer device provided by the utility model, the first connecting component comprises a first connecting arm, a second connecting arm and a third connecting arm, wherein one end of the first connecting arm is fixedly connected with the rotating shaft of the rotating cylinder, one end of the second connecting arm is connected with the other end of the first connecting arm, and one end of the third connecting arm is connected with the other end of the second connecting arm; the extending direction of the first connecting arm is perpendicular to the extending direction of the second connecting arm, the extending direction of the third connecting arm is perpendicular to the horizontal plane, the extending direction of the second connecting arm is perpendicular to the extending direction of the third connecting arm, and the extending direction of the first connecting arm is perpendicular to the extending direction of the second connecting arm.

In the glass transfer device provided by the utility model, the blanking sucker assembly comprises a first top plate connected with the lower end of the third connecting arm and a first vacuum sucker arranged on one side of the first top plate, which is far away from the third connecting arm.

In the glass transfer device provided by the utility model, the feeding pick-and-place mechanism comprises a second protection box fixedly connected to one side of the third mounting substrate, which is far away from the X-axis transfer module, wherein a feeding cylinder and a second vacuum generator are arranged in the second protection box, a piston rod of the feeding cylinder extends downwards from the second protection box, the lower end of the piston rod at the lower end of the feeding cylinder is connected with a feeding sucker assembly through a second connecting assembly, and the feeding sucker assembly is connected with the second vacuum generator through a hose; the feeding cylinder is used for driving the feeding sucker assembly to linearly move in the vertical direction.

In the glass transfer device provided by the utility model, the second connecting component comprises a fourth connecting arm connected with the piston rod of the feeding cylinder and a fifth connecting arm, the upper end of the fifth connecting arm is connected with the fourth connecting arm, the fourth connecting arm extends in a horizontal plane, and the fifth connecting arm extends in a vertical plane.

In the glass transfer device provided by the utility model, the feeding sucker assembly comprises a second top plate which extends in a horizontal plane and is connected to the lower end of the fifth connecting arm, and a second vacuum sucker which is arranged on the second top plate and is away from the fifth connecting arm.

In the glass transfer device provided by the utility model, the glass transfer device further comprises a lifting cleaning assembly arranged on one side of the third mounting substrate, which is far away from the X-axis transfer module, and the lifting cleaning assembly is positioned between the feeding taking and placing mechanism and the discharging inserting and placing mechanism.

In the glass transfer device provided by the utility model, the lifting cleaning assembly comprises a mounting bracket fixedly connected to the third mounting substrate, a lifting cylinder fixedly connected with the mounting bracket, and a blowing assembly connected with the bottom of a piston rod of the lifting cylinder through an adapter; the lifting air cylinder is used for driving the blowing assembly to linearly move in the vertical direction.

In the glass transfer device provided by the utility model, the blowing assembly is adjustably mounted on the adapter.

In the glass transfer device provided by the utility model, the adapter is provided with a first connecting piece extending in a horizontal plane and a second connecting piece extending downwards obliquely from one side of the first connecting piece, the upper side of the first connecting piece is connected to a piston rod of the lifting cylinder, the middle part of the second connecting piece is provided with an elongated hole, and the extending direction of the elongated hole is perpendicular to a vertical plane; the air blowing assembly comprises a middle connecting block, an air pipe fixedly connected with the middle connecting block, and an air inlet joint and an air outlet joint which are connected to two opposite ends of the air pipe; one side of the middle connecting block is provided with a limit screw, the limit screw penetrates through the slender hole, the tail end of the limit screw is sleeved with a clamping nut, and the tightness degree between the middle connecting block and the second connecting piece is achieved by screwing the clamping nut.

Compared with the prior art, the glass transfer device has the beneficial effects that:

1. the blanking inserting and placing mechanism comprises a first protection box fixedly connected to one side, away from the X-axis transferring module, of the third mounting substrate, a blanking cylinder and a first vacuum generator are installed in the first protection box, a piston rod of the blanking cylinder extends downwards out of the first protection box, a rotary cylinder is installed at the lower end of the blanking cylinder, a rotary shaft of the rotary cylinder is connected with a blanking sucker assembly through a first connecting assembly, and the blanking sucker assembly is connected with the first vacuum generator through a hose; the blanking cylinder is used for driving the rotary cylinder to linearly move in the vertical direction, and the rotary cylinder is used for driving the blanking sucker assembly to positively or reversely rotate around a straight line perpendicular to the vertical plane by a preset angle. Then, only the preset angle is set to 90 degrees, and the glass sheets horizontally placed can be adjusted to be vertically placed through the rotary cylinder, so that the glass can be vertically inserted and placed, and the glass is suitable for producing and processing the grinding-free glass.

2. The glass transfer device further comprises a lifting cleaning assembly arranged on one side, away from the X-axis transfer module, of the third mounting substrate, and the lifting cleaning assembly is located between the feeding taking and placing mechanism and the discharging inserting and placing mechanism. The lifting cleaning assembly is controlled to blow and clean the surface of the adsorption jig before the glass product is placed on the adsorption jig, so that the purpose of blowing off impurities on the surface of the adsorption jig is achieved, and the processing precision and the production yield of the glass product are further guaranteed. More importantly, the lifting cleaning assembly has a lifting function, and when the X-axis transferring module transfers, the height of the lifting cleaning assembly can be adjusted upwards, so that collision damage caused by interference of the lifting cleaning assembly with other parts is effectively avoided.

Drawings

FIG. 1 is a schematic perspective view of a prior art;

FIG. 2 is an exploded perspective view of a glass transfer device according to the present embodiment;

fig. 3 is a schematic structural diagram of a feeding, picking and placing mechanism of the glass transfer device provided in this embodiment, where a perspective process is performed on a second protection box;

FIG. 4 is an exploded perspective view of the air blowing assembly of the glass transfer device according to the present embodiment;

fig. 5 is a schematic structural diagram of a blanking insertion mechanism of the glass transfer device according to the present embodiment, where a perspective process is performed on a first protection box;

fig. 6 is a schematic perspective view of a partial structure of a blanking insertion mechanism of a glass transfer apparatus according to the present embodiment.

Reference numerals in the detailed description indicate:

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Referring to fig. 2 to 6, the present embodiment provides a glass transfer apparatus.

As shown in fig. 2, the glass transfer device includes an X-axis transfer module 201, one side of the X-axis transfer module 201 is connected with a third mounting substrate 202, and one side of the third mounting substrate 202, which is away from the X-axis transfer module 201, is provided with a feeding and picking mechanism 203 and a discharging and inserting mechanism 205. As shown in fig. 5, the discharging inserting and placing mechanism 205 includes a first protection box 2051 fixedly connected to a side of the third mounting substrate 202, which is far away from the X-axis transferring module 201, a discharging cylinder 2052 and a first vacuum generator 2056 are installed in the first protection box 2051, a piston rod of the discharging cylinder 2052 extends downwards from the first protection box 2051, a rotating cylinder 2053 is installed at the lower end of the discharging cylinder 2052, a rotating shaft of the rotating cylinder 2053 is connected with a discharging sucker assembly 2055 through a first connecting assembly 2054, and the discharging sucker assembly 2055 is connected with the first vacuum generator 2056 through a hose; the discharging cylinder 2052 is used for driving the rotary cylinder 2053 to linearly move in a vertical direction, and the rotary cylinder 2053 is used for driving the discharging sucker assembly 2055 to positively or reversely rotate around a straight line perpendicular to a vertical plane by a preset angle. Then, it can be understood that, only the preset angle is set to 90 °, the glass sheet placed horizontally can be adjusted to be placed vertically by the rotary cylinder 2053, so that the glass can be inserted vertically, and the glass is suitable for producing and processing the grinding-free glass.

With continued reference to fig. 5, in this embodiment, the first connection assembly 2054 includes a first connection arm 20541 having one end fixedly connected to the rotation shaft of the rotary cylinder 2053, a second connection arm 20542 having one end connected to the other end of the first connection arm 20541, and a third connection arm 20543 having one end connected to the other end of the second connection arm 20542; the extending direction of the first connecting arm 20541 is perpendicular to the extending direction of the second connecting arm 20542, the extending direction of the third connecting arm 20543 is perpendicular to the horizontal plane, the extending direction of the second connecting arm 20542 is perpendicular to the extending direction of the third connecting arm 20543, and the extending direction of the first connecting arm 20541 is perpendicular to the extending direction of the second connecting arm 20542. The blanking suction cup assembly 2055 includes a first top plate 20551 connected to a lower end of the third connecting arm 20543 and a first vacuum suction cup 20552 disposed on a side of the first top plate 20551 facing away from the third connecting arm 20543.

It is apparent that the rotation shaft of the rotary cylinder 2053 may stably rotate the first vacuum chuck 20552 by the first connection assembly 2054.

When the glass sheet horizontally placed needs to be sucked by the blanking inserting mechanism 205, the rotary cylinder 2053 can rotate the first vacuum chuck 20552 to a state that the suction surface of the first vacuum chuck 20552 is parallel to the horizontal plane, then the X-axis transplanting module drives the first vacuum chuck 20552 to align the glass sheet to be sucked, and then the first vacuum generator 2056 is started, so that the glass sheet horizontally placed is sucked.

When the glass sheets need to be vertically inserted by the blanking insertion mechanism 205, the rotary cylinder 2053 can rotate the first vacuum chuck 20552 to a state that the suction surface of the glass sheets is parallel to the vertical surface, at this time, the glass sheets sucked by the first vacuum chuck 20552 are naturally in a vertical state, then the X-axis transplanting module drives the first vacuum chuck 20552 to align with a receiving device for receiving the vertically placed glass sheets, and then the first vacuum generator 2056 stops, so that the glass sheets sucked on the first vacuum chuck 20552 vertically fall in the receiving device.

With continued reference to fig. 3, in this embodiment, the feeding pick-and-place mechanism 203 includes a second protection box 2031 fixedly connected to a side of the third mounting substrate 202 facing away from the X-axis transfer module 201, a feeding cylinder 2032 and a second vacuum generator 2036 are installed inside the second protection box 2031, a piston rod of the feeding cylinder 2032 extends downward from the second protection box 2031, and a lower end of the piston rod at a lower end of the feeding cylinder 2032 is connected with a feeding sucker assembly 2035 through a second connection assembly, and the feeding sucker assembly 2035 is connected with the second vacuum generator 2036 through a hose; the feeding cylinder 2032 is configured to drive the feeding suction cup assembly 2035 to move linearly in a vertical direction. The second connecting assembly comprises a fourth connecting arm 2033 connected with a piston rod of the feeding cylinder 2032 and a fifth connecting arm 2034, the upper end of which is connected with the fourth connecting arm 2033, the fourth connecting arm 2033 extends in a horizontal plane, and the fifth connecting arm 2034 extends in a vertical plane. The loading chuck assembly 2035 includes a second top plate 20351 extending in a horizontal plane and connected to a lower end of the fifth connection arm 2034, and a second vacuum chuck 20352 provided at the second top plate 20351 facing away from the fifth connection arm 2034. It should be noted that, the structure of the feeding pick-and-place mechanism 203 in this embodiment is the same as that of the prior art, so that the description is omitted.

Referring to fig. 4, in this embodiment, the glass transferring apparatus further includes a lifting cleaning assembly 204 mounted on a side of the third mounting substrate 202 facing away from the X-axis transferring module 201, where the lifting cleaning assembly 204 is located between the feeding pick-and-place mechanism 203 and the discharging insertion mechanism 205. The lifting cleaning assembly 204 comprises a mounting bracket 2041 fixedly connected to the third mounting substrate 202, a lifting cylinder 2042 fixedly connected to the mounting bracket 2041, and a blowing assembly 2044 connected to the bottom of a piston rod connected to the lifting cylinder 2042 through an adaptor 2043; the lifting cylinder 2042 is used to drive the blowing assembly 2044 to move linearly in a vertical direction.

Then, before the glass product is placed on the adsorption jig, the lifting cleaning assembly 204 is controlled to perform air blowing cleaning on the surface of the adsorption jig by using the air blowing assembly 2044, so as to achieve the purpose of blowing off impurities on the surface of the adsorption jig, thereby further ensuring the processing precision and the production yield of the glass product. More importantly, the lifting cleaning assembly 204 has a lifting function, and when the X-axis transferring module 201 transfers, the height of the blowing assembly 2044 can be adjusted up by the lifting cylinder 2042, so that collision damage caused by interference with other components can be effectively avoided.

With continued reference to fig. 4, in this embodiment, the blowing assembly 2044 is adjustably mounted to the adaptor 2043. Specifically, the adaptor 2043 has a first connecting piece 20431 extending in a horizontal plane and a second connecting piece 20432 extending obliquely downward from one side of the first connecting piece 20431, the upper side of the first connecting piece 20431 is connected to the piston rod of the lifting cylinder 2042, an elongated hole 204321 is formed in the middle of the second connecting piece 20432, and the extending direction of the elongated hole 204321 is perpendicular to the vertical plane; the blowing assembly 2044 includes an intermediate connection block 20441, a ventilation pipe 20442 fixedly connected to the intermediate connection block 20441, and an air inlet connector 20443 and an air outlet connector 20444 connected to opposite ends of the ventilation pipe 20442; one side of the middle connecting block 20441 is provided with a limit screw 20445, the limit screw 20445 is arranged in the elongated hole 204321 in a penetrating mode, the tail end of the limit screw 20445 is sleeved with a clamping nut, and the tightness degree between the middle connecting block 20441 and the second connecting piece 20432 is achieved through screwing the clamping nut.

It can be seen that when the extending direction of the elongated hole 204321 is the front-to-back direction, when we need to adjust the front-to-back position of the air blowing assembly 2044, the clamping nut can be screwed first to separate the intermediate connection block 20441 from the second connection piece 20432, and then the air blowing assembly 2044 is pushed back and forth until it is adjusted to the desired position, and the clamping nut is screwed again.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The glass transfer device comprises an X-axis transfer module (201), wherein one side of the X-axis transfer module (201) is connected with a third mounting substrate (202), one side of the third mounting substrate (202) which is far away from the X-axis transfer module (201) is provided with a feeding taking and placing mechanism (203) and a discharging inserting and placing mechanism (205), and the glass transfer device is characterized in that the discharging inserting and placing mechanism (205) comprises a first protection box (2051) fixedly connected to one side of the third mounting substrate (202) which is far away from the X-axis transfer module (201), a discharging cylinder (2052) and a first vacuum generator (2056) are arranged in the first protection box (2051), a piston rod of the discharging cylinder (2052) downwards extends out of the first protection box (2051), the lower end of the discharging cylinder (2052) is provided with a rotary cylinder (2053), a rotary shaft of the rotary cylinder (2053) is connected with a discharging sucker (2055) through a first connecting component (2054), and the discharging sucker (2055) is connected with the first vacuum generator (2056) through a vacuum sucker (2056); the blanking cylinder (2052) is used for driving the rotary cylinder (2053) to linearly move in the vertical direction, and the rotary cylinder (2053) is used for driving the blanking sucker assembly (2055) to positively or reversely rotate around a straight line perpendicular to the vertical plane by a preset angle.

2. The glass transfer apparatus according to claim 1, wherein the first connection assembly (2054) includes a first connection arm (20541) having one end fixedly connected to a rotation shaft of the rotary cylinder (2053), a second connection arm (20542) having one end connected to the other end of the first connection arm (20541), and a third connection arm (20543) having one end connected to the other end of the second connection arm (20542); the extending direction of the first connecting arm (20541) is perpendicular to the extending direction of the second connecting arm (20542), the extending direction of the third connecting arm (20543) is perpendicular to the horizontal plane, the extending direction of the second connecting arm (20542) is perpendicular to the extending direction of the third connecting arm (20543), and the extending direction of the first connecting arm (20541) is perpendicular to the extending direction of the second connecting arm (20542).

3. The glass transfer apparatus of claim 2, wherein the blanking suction cup assembly (2055) comprises a first top plate (20551) connected to a lower end of the third connecting arm (20543) and a first vacuum suction cup (20552) disposed on a side of the first top plate (20551) facing away from the third connecting arm (20543).

4. The glass transfer device according to claim 1, wherein the feeding pick-and-place mechanism (203) comprises a second protective box (2031) fixedly connected to one side of the third mounting substrate (202) away from the X-axis transfer module (201), a feeding cylinder (2032) and a second vacuum generator (2036) are installed in the second protective box (2031), a piston rod of the feeding cylinder (2032) extends downwards out of the second protective box (2031), and a feeding sucker assembly (2035) is connected to the lower end of the piston rod at the lower end of the feeding cylinder (2032) through a second connecting assembly, and the feeding sucker assembly (2035) is connected with the second vacuum generator (2036) through a hose; the feeding cylinder (2032) is used for driving the feeding sucker assembly (2035) to linearly move in the vertical direction.

5. The glass transfer apparatus according to claim 4, wherein the second connecting assembly comprises a fourth connecting arm (2033) connected to a piston rod of the feeding cylinder (2032) and a fifth connecting arm (2034) connected to the fourth connecting arm (2033) at an upper end, the fourth connecting arm (2033) extending in a horizontal plane, and the fifth connecting arm (2034) extending in a vertical plane.

6. The glass transfer apparatus of claim 5, wherein the loading chuck assembly (2035) includes a second top plate (20351) extending in a horizontal plane and connected to a lower end of the fifth connecting arm (2034) and a second vacuum chuck (20352) disposed on the second top plate (20351) facing away from the fifth connecting arm (2034).

7. The glass transfer apparatus according to claim 1, further comprising a lift cleaning assembly (204) mounted on a side of the third mounting substrate (202) facing away from the X-axis transfer module (201), the lift cleaning assembly (204) being located between the loading pick-and-place mechanism (203) and the unloading insert-and-place mechanism (205).

8. The glass transfer apparatus of claim 7, wherein the lift cleaning assembly (204) comprises a mounting bracket (2041) fixedly connected to the third mounting substrate (202), a lift cylinder (2042) fixedly connected to the mounting bracket (2041), and a blowing assembly (2044) connected to the bottom of a piston rod of the lift cylinder (2042) through an adapter (2043); the lifting cylinder (2042) is used for driving the blowing assembly (2044) to linearly move in the vertical direction.

9. The glass transfer device of claim 8, wherein the blowing assembly (2044) is adjustably mounted to the adaptor (2043).

10. The glass transfer device according to claim 8, wherein the adaptor (2043) has a first connecting piece (20431) extending in a horizontal plane and a second connecting piece (20432) extending obliquely downward from one side of the first connecting piece (20431), the upper side of the first connecting piece (20431) is connected to the piston rod of the lifting cylinder (2042), an elongated hole (204321) is opened in the middle of the second connecting piece (20432), and the extending direction of the elongated hole (204321) is perpendicular to a vertical plane; the blowing assembly (2044) comprises a middle connecting block (20441), a vent pipe (20442) fixedly connected with the middle connecting block (20441), and an air inlet joint (20443) and an air outlet joint (20444) connected to opposite ends of the vent pipe (20442); one side of middle connecting block (20441) is equipped with spacing screw rod (20445), spacing screw rod (20445) wears to locate elongated hole (204321), the end cover of spacing screw rod (20445) is equipped with the clamp nut, through the screw thread clamp nut realization the elasticity degree between middle connecting block (20441) and second connection piece (20432).