阅读说明：本技术 一种物流运输件自动化捆扎装置 (Automatic binding apparatus of commodity circulation transportation piece ) 是由 任震 徐振 于 2021-04-15 设计创作，主要内容包括：本发明公开了一种物流运输件自动化捆扎装置,由工作台、旋转机构、固定机构以及捆扎机构组成,启动第二电机驱动丝杆进行旋转,通过一对导柱与第一移动板之间的相互配合,丝杆的转动带动第一移动板在竖直方向上进行移动,第一移动板的移动带动转轮进行移动,从而根据工件的大小将胶带调整到适当的位置,并将胶带的一端粘连在工件的表面,启动第一电机能够驱动支撑管进行旋转,支撑管的转动带动转台进行旋转,转台的转动带动第一支撑板进行旋转,从而使胶带缠绕在工件的表面,实现自动对工件的捆扎,提高了工作效率,通过对固定机构的设计,能够防止工件在捆扎的过程中发生位移,影响捆扎的效果。(The invention discloses an automatic bundling device for logistics transportation pieces, which consists of a workbench, a rotating mechanism, a fixing mechanism and a bundling mechanism, wherein a second motor is started to drive a screw rod to rotate, the first moving plate is driven to move in the vertical direction by the rotation of the screw rod through the mutual matching of a pair of guide posts and the first moving plate, the rotating wheel is driven to move by the movement of the first moving plate, so that an adhesive tape is adjusted to a proper position according to the size of a workpiece, one end of the adhesive tape is adhered to the surface of the workpiece, a supporting tube can be driven to rotate by starting the first motor, a rotating table is driven to rotate by the rotation of the supporting tube, the first supporting plate is driven to rotate by the rotation of the rotating table, so that the adhesive tape is wound on the surface of the workpiece, the automatic bundling of the workpiece is realized, the working efficiency is improved, and the displacement of the workpiece in the bundling process can be, affecting the binding effect.)

1. An automatic binding apparatus of commodity circulation transportation piece, its characterized in that includes:

the device comprises a workbench (1), wherein a first sliding groove (2) is formed in the upper surface of the workbench (1), and a first sliding column (3) is connected in the first sliding groove (2) in a sliding manner;

the rotating mechanism (4) is fixedly connected to the surface of the workbench (1), the rotating mechanism (4) comprises a first motor (41), the outlet end of the first motor (41) is fixedly connected with a supporting pipe (42), a rotary table (43) is welded at the upper end of the supporting pipe (42), and a fixed table (44) is arranged in the middle of the upper surface of the rotary table (43);

the fixing mechanism (6) is fixedly connected to the upper surface of the fixing table (44);

and the bundling mechanism (5) is fixedly connected to the upper surface of the rotary table (43).

2. The automatic bundling device for logistics transportation pieces as claimed in claim 1, wherein: the other end of first traveller (3) is in the same place with revolving stage (43) welding, the coaxial welding in bottom of fixed station (44) has stand (45), stand (45) run through revolving stage (43), and stand (45) are located the inner chamber of stay tube (42), all link together through bearing rotation between stay tube (42) and workstation (1), between stand (45) and revolving stage (43), between stand (45) and stay tube (42).

3. The automatic bundling device for logistics transportation pieces as claimed in claim 1, wherein: the bundling mechanism (5) comprises a first supporting plate (51), the first supporting plate (51) is L-shaped, the upper surface of the first supporting plate (51) is fixedly connected with a second motor (52), the outlet end of the second motor (52) is fixedly connected with a lead screw (53) through a coupler, the lead screw (53) penetrates through the first supporting plate (51), the lead screw (53) is rotatably connected with the first supporting plate (51) and the rotary table (43) through a bearing, a first moving plate (55) is connected to the outer wall of the lead screw (53) in a threaded manner, and a pair of guide posts (54) are welded on the inner wall of the first supporting plate (51).

4. The automatic bundling device for logistics transportation pieces as claimed in claim 3, wherein: the pair of guide posts (54) penetrate through the first moving plate (55), the first moving plate (55) is connected with the pair of guide posts (54) in a sliding mode, a second supporting plate (56) is welded on one side wall of the first moving plate (55), a seventh groove (511) is formed in the other end of the second supporting plate (56), a first rotating rod (57) is rotatably connected into the seventh groove (511) through a bearing, a rotating wheel (58) is coaxially and fixedly connected onto the outer wall of the first rotating rod (57), a fixing groove (59) is formed in the outer wall of the rotating wheel (58), and an adhesive tape (510) is wound in the fixing groove (59).

5. The automatic bundling device for logistics transportation pieces as claimed in claim 1, wherein: the fixing mechanism (6) comprises a supporting frame (61), a cylinder (62) is fixedly connected to the front face of the supporting frame (61), a second moving plate (63) is fixedly connected to the outlet end of the cylinder (62), a second sliding groove (64) and a third sliding groove (65) are formed in the upper surface of the second moving plate (63), and a first moving plate (67) and a third moving plate (616) are arranged on the back face of the second moving plate (63).

6. The automatic bundling device for logistics transportation pieces as claimed in claim 5, wherein: first fly leaf (67) are colluding the shape, open the one end of first fly leaf (67) has first recess (69), the welding has second traveller (66) on the inner wall of first recess (69), sliding connection is in the same place between second traveller (66) and second spout (64), open the corner of first fly leaf (67) has second recess (610), be in the same place through the one end swing joint of round pin axle with support frame (61) in second recess (610), the other end welding of first fly leaf (67) has first splint (68).

7. The automatic bundling device for logistics transportation pieces as claimed in claim 5, wherein: the utility model discloses a portable electronic device, including third movable plate (616), third movable plate (616) are colluded shape, the one end of third movable plate (616) is opened has fifth recess (617), the welding has fourth traveller (620) on the inner wall of fifth recess (617), sliding connection is in the same place between fourth traveller (620) and third spout (65), the corner of third movable plate (616) is opened has sixth recess (618), there is second movable plate (611) through round pin axle swing joint in sixth recess (618), the other end welding of third movable plate (616) has third splint (619).

8. The automatic bundling device for logistics transportation pieces as claimed in claim 7, wherein: the second movable plate (611) is hook-shaped, the second movable plate (611) and the third movable plate (616) are arranged in a crossed mode, a fourth groove (613) is formed in one end of the second movable plate (611), a third sliding column (615) is welded to the inner wall of the fourth groove (613), the third sliding column (615) is connected with the third sliding groove (65) in a sliding mode, a third groove (612) is formed in the corner of the second movable plate (611), the third groove (612) is connected with the other end of the support frame (61) in a movable mode through a pin shaft, and a second clamping plate (614) is welded to the other end of the second movable plate (611).

Technical Field

The invention relates to the technical field of bundling of logistics transportation pieces, in particular to an automatic bundling device for the logistics transportation pieces.

Background

Logistics refers to the overall process of planning, implementing and managing raw materials, semi-finished products, finished products or related information from the production area of a commodity to the consumption area of the commodity in transportation, storage, distribution and other ways with the lowest cost and high efficiency in order to meet the needs of customers. Logistics is a system for controlling the movement of raw materials, finished products and information from supply to the end consumer via the transfer and possession of various intermediate links, thereby achieving the clear goal of organization. Modern logistics is a product of economic globalization and is also an important service industry for promoting economic globalization.

The logistics transportation piece needs to be bundled before being taken out of a warehouse, so that the packaging box is prevented from being rolled off in the transportation process of articles in the packaging box, the conventional logistics transportation piece is manually bundled, and the articles are easy to displace during bundling, so that the bundling is not tight enough.

Disclosure of Invention

The invention provides an automatic bundling device for logistics transportation pieces, and aims to solve at least one problem in the prior art.

In order to solve the problems, the invention adopts the following technical scheme:

an automatic bundling device for logistics transportation pieces comprises a workbench, a rotating mechanism, a fixing mechanism and a bundling mechanism.

Wherein, the workstation is used as basic platform, open the upper surface of workstation has first spout, sliding connection has first traveller in the first spout, through the mutually supporting between first spout and the first traveller, makes things convenient for rotary mechanism's normal operating.

Wherein, rotary mechanism fixed connection be in the surface of workstation, rotary mechanism includes first motor, and first motor is servo motor, the exit end fixedly connected with stay tube of first motor, the upper end welding of stay tube has the revolving stage, the upper surface middle part of revolving stage is provided with the fixed station, and the work piece has been placed to the upper surface of fixed station, starts first motor and can drive the stay tube and rotate, and the rotation of stay tube drives the revolving stage and rotates.

The fixing mechanism is fixedly connected to the upper surface of the fixing table, the fixing table plays a supporting role for the fixing mechanism, and the fixing mechanism is designed to prevent the workpieces from being displaced in the bundling process to affect the bundling effect.

The binding mechanism is fixedly connected to the upper surface of the rotary table, the rotary table supports the binding mechanism, workpieces can be automatically bound through the binding mechanism, the working efficiency is improved, and meanwhile the height of the workpieces can be automatically adjusted according to different sizes.

As a preferable scheme of the invention, the other end of the first sliding column is welded with the rotary table, the bottom of the fixed table is coaxially welded with an upright column, the upright column penetrates through the rotary table and is positioned in an inner cavity of the supporting tube, and the supporting tube is rotatably connected with the workbench, the upright column is connected with the rotary table, and the upright column is rotatably connected with the supporting tube through bearings.

As a preferred scheme of the present invention, the strapping mechanism includes a first support plate, the first support plate is L-shaped, the upper surface of the first support plate is fixedly connected with a second motor, the outlet end of the second motor is fixedly connected with a lead screw through a coupler, the lead screw penetrates through the first support plate, the lead screw, the first support plate and the turntable are rotatably connected together through a bearing, the outer wall of the lead screw is in threaded connection with a first moving plate, and the inner wall of the first support plate is welded with a pair of guide posts.

As a preferable scheme of the present invention, the pair of guide pillars penetrates through the first moving plate, the first moving plate and the pair of guide pillars are slidably connected together, a second support plate is welded on one side wall of the first moving plate, a seventh groove is formed at the other end of the second support plate, a first rotating rod is rotatably connected in the seventh groove through a bearing, a rotating wheel is coaxially and fixedly connected to an outer wall of the first rotating rod, a fixing groove is formed in an outer wall of the rotating wheel, and an adhesive tape is wound in the fixing groove.

As a preferable scheme of the present invention, the fixing mechanism includes a support frame, a cylinder is fixedly connected to a front surface of the support frame, a second moving plate is fixedly connected to an outlet end of the cylinder, a second sliding groove and a third sliding groove are formed on an upper surface of the second moving plate, and a first moving plate and a third moving plate are disposed on a back surface of the second moving plate.

As a preferable scheme of the present invention, the first movable plate is hook-shaped, one end of the first movable plate is provided with a first groove, the inner wall of the first groove is welded with a second sliding column, the second sliding column is connected with a second sliding groove in a sliding manner, a corner of the first movable plate is provided with a second groove, the second groove is movably connected with one end of the support frame through a pin shaft, and the other end of the first movable plate is welded with a first clamping plate.

As a preferable scheme of the present invention, the third movable plate is hook-shaped, a fifth groove is formed at one end of the third movable plate, a fourth sliding column is welded on an inner wall of the fifth groove, the fourth sliding column is connected with the third sliding groove in a sliding manner, a sixth groove is formed at a corner of the third movable plate, a second movable plate is movably connected in the sixth groove through a pin shaft, and a third clamping plate is welded at the other end of the third movable plate.

As a preferable scheme of the present invention, the second movable plate is hook-shaped, the second movable plate and the third movable plate are arranged in a crossed manner, a fourth groove is formed at one end of the second movable plate, a third sliding column is welded on an inner wall of the fourth groove, the third sliding column and the third sliding groove are connected together in a sliding manner, a third groove is formed at a corner of the second movable plate, the third groove is movably connected with the other end of the support frame through a pin shaft, and a second clamping plate is welded at the other end of the second movable plate.

Compared with the prior art, the invention has the advantages that:

(1) the workpiece is placed on the fixed table, the air cylinder is started to push the second movable plate to move towards the workpiece, the movement of the second movable plate drives the first movable plate, the second movable plate and the third movable plate to move, the first movable plate, the second movable plate and the third movable plate can respectively rotate by taking the corresponding pin shafts as centers during the moving process through the mutual matching between the second sliding column and the second sliding groove, between the third sliding column and the third sliding groove and between the fourth sliding column and the third sliding groove until the first clamping plate, the second clamping plate and the third clamping plate are tightly attached to the surface of the workpiece, a triangular area is formed between the first clamping plate, the second clamping plate and the third clamping plate, the first clamping plate, the second clamping plate and the third clamping plate are respectively contacted with three surfaces of the workpiece together, the clamping of the workpiece is realized by utilizing the stability of the triangle, and the displacement of the workpiece in the bundling process can be prevented, affecting the binding effect.

(2) The start second motor drive lead screw rotates, through mutually supporting between a pair of guide pillar and the first movable plate, the rotation of lead screw drives first movable plate and moves on vertical direction, the removal of first movable plate drives the runner and moves, thereby adjust the sticky tape to suitable position according to the size of work piece, and with the one end adhesion of sticky tape on the surface of work piece, start first motor and can drive the stay tube and rotate, the rotation of stay tube drives the revolving stage and rotates, the rotation of revolving stage drives first backup pad and rotates, thereby make the sticky tape winding on the surface of work piece, realize automatic tying up to the work piece, and the work efficiency is improved.

Drawings

FIG. 1 is a schematic view of a first perspective of a three-dimensional structure according to the present invention;

FIG. 2 is a schematic cross-sectional view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure at B in FIG. 2 according to the present invention;

FIG. 4 is a schematic top view of the structure of FIG. 1 in accordance with the present invention;

FIG. 5 is a schematic cross-sectional view of the structure at C in FIG. 4 according to the present invention

Fig. 6 is a schematic view of a second perspective structure according to the present invention.

The reference numbers in the figures illustrate:

1. a work table; 2. a first chute; 3. a first traveler; 4. a rotation mechanism; 41. a first motor; 42. supporting a tube; 43. a turntable; 44. a fixed table; 45. a column; 5. a strapping mechanism; 51. a first support plate; 52. a second motor; 53. a screw rod; 54. a pair of guide posts; 55. a first moving plate; 56. a second support plate; 57. a first rotating lever; 58. a rotating wheel; 59. fixing grooves; 510. an adhesive tape; 511. a seventh groove; 6. a fixing mechanism; 61. a support frame; 62. a cylinder; 63. a second moving plate; 64. a second chute; 65. a third chute; 66. a second strut; 67. a first movable plate; 68. a first splint; 69. a first groove; 610. a second groove; 611. a second movable plate; 612. a third groove; 613. a fourth groove; 614. a second splint; 615. a third strut; 616. a third movable plate; 617. a fifth groove; 618. a sixth groove; 619. a third splint; 620. a fourth traveler; 7. and (5) a workpiece.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Example (b):

referring to fig. 1-6, an automatic bundling apparatus for logistics transportation comprises a working table 1, a rotating mechanism 4, a fixing mechanism 6 and a bundling mechanism 5.

Wherein, workstation 1 is used as basic platform, and open the upper surface of workstation 1 has first spout 2, and sliding connection has first traveller 3 in first spout 2, through the mutually supporting between first spout 2 and the first traveller 3, makes things convenient for rotary mechanism 4's normal operating.

Wherein, rotary mechanism 4 fixed connection is on the surface of workstation 1, rotary mechanism 4 includes first motor 41, first motor 41 is servo motor, the exit end fixedly connected with stay tube 42 of first motor 41, the upper end welding of stay tube 42 has revolving stage 43, the upper surface middle part of revolving stage 43 is provided with fixed station 44, work piece 7 has been placed to the upper surface of fixed station 44, start first motor 41 and can drive stay tube 42 and rotate, the rotation of stay tube 42 drives revolving stage 43 and rotates.

The fixing mechanism 6 is fixedly connected to the upper surface of the fixing table 44, the fixing table 44 supports the fixing mechanism 6, and the fixing mechanism 6 is designed to prevent the workpieces 7 from being displaced in the bundling process to affect the bundling effect.

The binding mechanism 5 is fixedly connected to the upper surface of the rotary table 43, the rotary table 43 supports the binding mechanism 5, the workpieces 7 can be automatically bound through the design of the binding mechanism 5, the working efficiency is improved, and meanwhile, the height of the workpieces 7 can be automatically adjusted according to different sizes.

Specifically, the other end of the first sliding column 3 is welded with the rotary table 43, the upright 45 is coaxially welded at the bottom of the fixed table 44, the upright 45 penetrates through the rotary table 43, the upright 45 is located in the inner cavity of the supporting tube 42, and the supporting tube 42 and the workbench 1, the upright 45 and the rotary table 43, and the upright 45 and the supporting tube 42 are rotatably connected together through bearings.

In a further embodiment, the first sliding chute 2 and the first sliding column 3 are matched with each other, so that the rotation of the rotary table 43 is facilitated, meanwhile, the first sliding column 3 supports the rotary table 43, the upright column 45 supports the fixed table 44, and the connection between the support tube 42 and the workbench 1, between the upright column 45 and the rotary table 43, and between the upright column 45 and the support tube 42 is further limited, so that the effect that the rotary table 43 rotates and the fixed table 44 does not rotate is achieved.

Specifically, the bundling mechanism 5 includes a first support plate 51, the first support plate 51 is L-shaped, the upper surface of the first support plate 51 is fixedly connected with a second motor 52, the outlet end of the second motor 52 is fixedly connected with a lead screw 53 through a coupler, the lead screw 53 penetrates through the first support plate 51, the lead screw 53 is rotatably connected with the first support plate 51 and the turntable 43 through a bearing, the outer wall of the lead screw 53 is connected with a first moving plate 55 through threads, and the inner wall of the first support plate 51 is welded with a pair of guide posts 54.

In a further embodiment, the second motor 52 is a forward and reverse rotation motor, and when the second motor 52 is started to drive the screw 53 to rotate, the rotation of the screw 53 drives the first moving plate 55 to move in the vertical direction through the cooperation between the pair of guide posts 54 and the first moving plate 55.

Specifically, the pair of guide posts 54 penetrate through the first moving plate 55, the first moving plate 55 is connected with the pair of guide posts 54 in a sliding manner, a second supporting plate 56 is welded on one side wall of the first moving plate 55, a seventh groove 511 is formed in the other end of the second supporting plate 56, a first rotating rod 57 is rotatably connected in the seventh groove 511 through a bearing, a rotating wheel 58 is coaxially and fixedly connected to the outer wall of the first rotating rod 57, a fixing groove 59 is formed in the outer wall of the rotating wheel 58, and an adhesive tape 510 is wound in the fixing groove 59.

In a further embodiment, the second supporting plate 56 is L-shaped, the movement of the first moving plate 55 drives the second supporting plate 56 to move, and the movement of the second supporting plate 56 drives the rotating wheel 58 to move, so as to adjust the adhesive tape 510 to a proper position and adhere one end of the adhesive tape 510 to the surface of the workpiece 7.

Specifically, the fixing mechanism 6 includes a supporting frame 61, a cylinder 62 is fixedly connected to a front surface of the supporting frame 61, a second moving plate 63 is fixedly connected to an outlet end of the cylinder 62, a second sliding slot 64 and a third sliding slot 65 are formed on an upper surface of the second moving plate 63, and a first movable plate 67 and a third movable plate 616 are disposed on a back surface of the second moving plate 63.

In a further embodiment, the starting cylinder 62 can push the second moving plate 63 to move toward the workpiece 7, the movement of the second moving plate 63 drives the first moving plate 67 and the third moving plate 616 to move, the supporting frame 61 is in a shape of a Chinese character 'hui', and an opening is formed in the back of the supporting frame 61 to facilitate the movement of the first moving plate 67 and the third moving plate 616.

Specifically, the first movable plate 67 is hook-shaped, a first groove 69 is formed in one end of the first movable plate 67, a second sliding column 66 is welded to the inner wall of the first groove 69, the second sliding column 66 is connected with the second sliding groove 64 in a sliding mode, a second groove 610 is formed in a corner of the first movable plate 67, the second groove 610 is movably connected with one end of the support frame 61 through a pin shaft, and a first clamping plate 68 is welded to the other end of the first movable plate 67.

In a further embodiment, through the mutual cooperation between the second sliding column 66 and the second sliding chute 64, the first movable plate 67 can rotate around the pin shaft while moving until the first clamping plate 68 is tightly attached to the surface of the workpiece 7, through the design of the first groove 69, the relative movement between the first movable plate 67 and the second movable plate 63 is facilitated, and through the design of the second groove 610, the relative movement between the first movable plate 67 and the supporting frame 61 is facilitated.

Specifically, the third movable plate 616 is hook-shaped, one end of the third movable plate 616 is provided with a fifth groove 617, the inner wall of the fifth groove 617 is welded with a fourth sliding column 620, the fourth sliding column 620 is connected with the third sliding groove 65 in a sliding manner, a sixth groove 618 is formed at a corner of the third movable plate 616, the second movable plate 611 is movably connected in the sixth groove 618 through a pin shaft, and the other end of the third movable plate 616 is welded with a third clamping plate 619.

In a further embodiment, through the mutual cooperation between the fourth sliding column 620 and the third sliding groove 65, the third movable plate 616 can rotate around the pin at the corner of the third movable plate 616 during the moving process until the third clamping plate 619 is tightly attached to the surface of the workpiece 7, the fifth groove 617 facilitates the relative movement between the third movable plate 616 and the second movable plate 63, and the sixth groove 618 facilitates the relative movement between the third movable plate 616 and the second movable plate 611.

Specifically, the second movable plate 611 is hook-shaped, the second movable plate 611 and the third movable plate 616 are arranged in a crossing manner, a fourth groove 613 is formed at one end of the second movable plate 611, a third sliding column 615 is welded on the inner wall of the fourth groove 613, the third sliding column 615 is connected with the third sliding groove 65 in a sliding manner, a third groove 612 is formed at a corner of the second movable plate 611, the third groove 612 is movably connected with the other end of the support frame 61 through a pin shaft, and a second clamping plate 614 is welded at the other end of the second movable plate 611.

In a further embodiment, by the mutual cooperation between the third sliding column 615 and the third sliding groove 65, the second movable plate 611 can rotate with the pin at the corner of the second movable plate 611 while moving until the second clamping plate 614 is tightly attached to the surface of the workpiece 7, the relative movement between the second movable plate 611 and the second movable plate 63 is facilitated by the design of the fourth groove 613, and the relative movement between the second movable plate 611 and the supporting frame 61 is facilitated by the design of the third groove 612.

The working principle of the embodiment is as follows:

the workpiece 7 is placed on the fixed table 44, the starting cylinder 62 can push the second moving plate 63 to move towards the workpiece 7, the movement of the second moving plate 63 drives the first moving plate 67, the second moving plate 611 and the third moving plate 616 to move, through the mutual matching between the second sliding column 66 and the second sliding slot 64, the first moving plate 67 can rotate around the pin shaft during the moving process until the first clamping plate 68 clings to the surface of the workpiece 7, through the mutual matching between the fourth sliding column 620 and the third sliding slot 65, the third moving plate 616 can rotate around the pin shaft at the corner of the third moving plate 616 during the moving process until the third clamping plate 619 clings to the surface of the workpiece 7, through the mutual matching between the third sliding column 615 and the third sliding slot 65, the second moving plate 611 can rotate around the pin shaft at the corner of the second moving plate 611 during the moving process, until the second clamping plate 614 is tightly attached to the surface of the workpiece 7, a triangular area is defined among the first clamping plate 68, the second clamping plate 614 and the third clamping plate 619, the first clamping plate 68, the second clamping plate 614 and the third clamping plate 619 are respectively contacted with three surfaces of the workpiece 7, and the workpiece 7 is clamped by utilizing the stability of the triangle;

the second motor 52 is started to drive the screw 53 to rotate, through the mutual matching between the pair of guide posts 54 and the first moving plate 55, the first moving plate 55 is driven to move in the vertical direction by the rotation of the screw 53, the second supporting plate 56 is driven to move by the movement of the first moving plate 55, the rotating wheel 58 is driven to move by the movement of the second supporting plate 56, so that the adhesive tape 510 is adjusted to a proper position, one end of the adhesive tape 510 is adhered to the surface of the workpiece 7, the supporting tube 42 can be driven to rotate by the starting of the first motor 41, the rotating table 43 is driven to rotate by the rotation of the supporting tube 42, the first supporting plate 51 is driven to rotate by the rotation of the rotating table 43, the adhesive tape 510 is wound on the surface of the workpiece 7, and the workpiece 7 is bound.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.