CN112140524A - Seamless sticking film machine - Google Patents

Abstract

The invention provides a seamless film sticking machine, which belongs to the technical field of machinery. It solves the problem that the existing laminating machine is easily contaminated with dust. The seamless film laminating machine includes a frame, a middle turntable and a winding and unwinding mechanism are arranged in the frame, a grabbing mechanism is arranged between the winding and unwinding mechanism and the middle turntable, one side of the frame is provided with a blanking mechanism, and the other There is a feeding frame on the side, and the feeding frame is provided with a rotatable driving roller and a driven roller. The peripheral outer sidewalls of the driving roller and the driven roller are spaced with a number of annular concave first positioning grooves. , the driving roller and the driven roller are tensioned with several conveying ropes with circular cross-sections. There is a gap between the ropes, and a feeding mechanism capable of grabbing the workpieces on the conveying rope onto the intermediate turntable is arranged between the feeding rack and the intermediate turntable. The seamless film laminating machine has the advantage of not being easily contaminated with dust.

Description

A seamless laminating machine

technical field

The invention belongs to the technical field of machinery, and relates to a seamless laminating machine.

Background technique

During the production and processing of products, such as watch covers, screens of electronic products, etc., it is necessary to stick films on their surfaces to prevent the wear of watch covers, screens, etc. quality.

In order to improve the efficiency of filming, the workpiece will use a filming machine during the filming process. Existing filming machines, such as Chinese patent literature, disclose a fully automatic hemming and filming device for the peripheral of an injection molding machine [Application No.: 201810415547.6; Application published No.: CN108437352A], which includes a chassis and a handling device arranged on the chassis, and along the handling device, the chassis is sequentially provided with a material swinging station, a piping station, a filming station and a transfer station, and the material swinging station is provided with a Swing adjustment and positioning device, the swing adjustment and positioning device includes a stage, a hemming device is arranged on the hemming station, and the hemming device includes a hemming table, a hemming head and a biaxial moving component that drives the hemming table to move around the hemming head; film sticking A film sticking device is arranged on the work station, and the film sticking device includes a film sticking assembly and a material tape rewinding and unwinding mechanism.

In the film sticking device of this structure, the workpiece is placed on the stage for transportation, and the stage is equivalent to a conveyor belt. During the process of conveying the workpiece, the workpiece will contact the stage, and the contact between the workpiece and the stage is Surface contact, the contact area is large, and even if the film is applied in a clean room, some dust will inevitably fall on the stage, and the dust falling on the stage will adhere to the workpiece, so that the When the film is pasted, the dust will be contaminated between the workpiece and the diaphragm, which will cause the workpiece to be unqualified or even scrapped.

SUMMARY OF THE INVENTION

The purpose of the present invention is to address the above-mentioned problems in the prior art, and propose a seamless film laminating machine, which solves the technical problem of how to make the workpiece not easily contaminated with dust during the lamination process.

The purpose of the present invention can be achieved by the following technical solutions: a seamless laminating machine, comprising a frame, the frame is provided with a turntable that can fix the workpiece, and the frame is provided with a material belt that can move A rewinding and unwinding mechanism is provided between the rewinding and unwinding mechanism and the intermediate turntable, and a grabbing mechanism capable of grabbing the film in the tape and pasting the workpiece on the intermediate turntable is provided, and one side of the frame is provided with There is an unloading mechanism that can remove the workpiece from the turntable. It is characterized in that the other side of the frame is also provided with a feeding frame, and the feeding frame is provided with rotatable driving rollers and driven rollers. , the peripheral outer sidewalls of the driving roller and the driven roller are provided with a number of annularly concave first positioning grooves at intervals, and a number of circular cross-sections are tensioned on the driving roller and the driven roller. The two ends of the conveying rope are respectively embedded in the corresponding first positioning grooves of the driving roller and the driven roller, and there is a gap between the two adjacent conveying ropes. There is a feeding mechanism between the intermediate turntables that can grab the workpiece on the conveying rope to the intermediate turntable.

This seamless laminating machine is used for laminating, such as laminating the cover, the workpiece moves with the conveying rope, and then grabs onto the intermediate turntable through the feeding mechanism, and the rewinding and unwinding mechanism works to drive the material belt to move. The material belt is two layers The film is located in one layer of the material tape and is formed by cutting it in advance, and the film is adhered to the other layer of the material belt. It is attached to the workpiece at the turntable, and finally unloaded through the unloading mechanism. The driving roller and the driven roller cooperate to drive the conveyor rope to move, the workpiece is placed on the conveyor rope, and the movement of the conveyor rope drives the workpiece to move. The cross section of the conveyor rope is circular, and there is a gap between two adjacent conveyor ropes. This structure is similar to reducing the surface area of the conveyor belt body, so that dust is not easy to accumulate on the conveyor rope, and workpieces such as surface covers are placed When on the conveyor rope, the workpiece and the conveyor rope are in line contact, which greatly reduces the contact area, so that the workpiece moving with the conveyor rope is not easy to be contaminated with dust, and the product qualification rate is improved. The setting of the first positioning groove plays a role in positioning the conveying rope, so that the conveying rope will not deviate from the set position during the moving process, so that the workpiece placed on the conveying rope and moving with the conveying rope will not fall.

In the above-mentioned seamless film laminating machine, the feeding frame is further provided with a number of support rollers, the support rollers are located between the driving roller and the driven roller, and the peripheral outer side walls of the support rollers are spaced apart from each other. A plurality of annular concave second locating grooves are provided, the second locating grooves are correspondingly arranged with the first locating grooves, the conveying rope can be embedded in the second locating grooves, and the conveying rope is partially protruded and arranged in the outside the support rollers. The support roller plays a supporting role to prevent the conveying rope from sagging, to ensure that the conveying rope is on the same horizontal plane, so that the workpiece can be conveyed smoothly, and there is no problem of relative movement with the conveying rope; the part of the conveying rope protrudes outside the support roller, that is, the workpiece follows the There will be no problem of jamming with the support roller during the movement of the conveying rope.

In the above-mentioned seamless film laminating machine, the outer diameter of the supporting roller is smaller than the outer diameter of the driving roller and the driven roller, and along the vertical direction, the central axis of the supporting roller is located between the driving roller and the driven roller. Above the central axis of the moving roller, the height of the conveying rope protruding outside the second positioning groove is greater than the height of the conveying rope being protruding outside the first positioning groove. In this structure, the conveying rope above the support roller is embedded in the second positioning groove, and the conveying rope under the support roller is separated from the support roller, the support roller will not increase the resistance, and will not hinder the movement of the conveying rope, Make the conveying rope better drive the workpiece to move.

In the above-mentioned seamless film laminating machine, both ends of the support roller are connected to the feeding frame, and bearings are provided between both ends of the supporting roller and the feeding frame. The setting of the bearing allows the support roller to rotate smoothly and the conveyor rope to move smoothly, thus making the workpiece move smoothly.

In the above-mentioned seamless laminating machine, the conveying rope has elasticity, and the conveying rope is made of rubber material, plastic material or fiber material. The conveyor rope can be better tensioned, so that the rolling roller can better drive the conveyor rope to move, so that the workpiece can move smoothly.

In the above-mentioned seamless film laminating machine, an alignment plate is fixedly connected to the feeding frame, and the alignment plate is located above the conveying rope in the vertical direction, and the inner side of the alignment plate is connected to the conveying rope. The ropes are parallel, and the two ends of the inner side of the alignment plate are rounded. The workpiece moves with the conveyor rope. When the workpiece contacts the end of the inner side of the alignment plate, it will deviate from a certain position under the action of rounding and then move along the inner side of the alignment plate. The rounding plays a role in adjusting the position of the workpiece. The setting of the alignment plate makes the workpiece move according to the set position, so that the feeding mechanism can accurately grasp the workpiece.

In the above-mentioned seamless film laminating machine, a first driver is fixedly connected to the feeding frame, the first driver is connected with the driving roller, and the first driver can drive the driving roller to rotate. The conveyor rope is tensioned, and the driver can drive the conveyor rope to move as long as it drives the driving roller to rotate.

In the above-mentioned seamless film laminating machine, the grabbing mechanism includes a grabbing cylinder that can move up and down, left and right, and the grabbing cylinder is provided with a bonding piece that can move up and down relative to the grabbing cylinder, and the retracting and unwinding rolls are The mechanism includes a second driver, the output shaft of the second driver is fixed with a driving plate, the grabbing cylinder can move to the driving plate, and the adhesive piece can grab the material in the material belt with the movement of the driving plate. diaphragm. The material belt is double-layered, by cutting one of the layers to form a diaphragm, the driving plate extends, the diaphragm moves to the driving plate, the grabbing cylinder moves down to the set position, and then the adhesive moves down to stick the diaphragm, The second driver drives the drive plate to move backward. When the rewinding and unwinding mechanism pulls the material tape to move, the film will be lifted, so that the film and the material tape will be separated. The movement of the grabbing cylinder drives the diaphragm to move above the workpiece at the middle turntable, then the grabbing cylinder moves down, and the adhesive piece moves down to make the diaphragm stick to the workpiece, the grabbing cylinder returns to its original position, and the unloading mechanism removes the workpiece. Take it off from the turntable, easy to operate.

In the above-mentioned seamless film laminating machine, a pair of guide plates is adjustable and fixed on the drive plate, and a first guide groove is formed between the pair of guide plates, and the adjustable fixing plate on the second driver is fixed. A pair of guide blocks are connected, a second guide groove is arranged between the pair of guide blocks, and the material belt moves along the first guide groove and the second guide groove. With this structure, the material belt is positioned so that the material belt will not deviate from the set position and the movement accuracy of the diaphragm is improved; at the same time, by adjusting the guide plate and the guide block, the width of the first guide groove and the second guide groove can be adjusted. , so that this seamless laminating machine is suitable for different widths of material strips, and has strong versatility.

In the above-mentioned seamless film laminating machine, the top of the frame is provided with a first camera, and the middle of the middle turntable has a plurality of suction holes for connecting with the suction mechanism, the first camera The air suction hole on the turntable is directly aligned, and the bottom of the frame is provided with a second camera, and the second camera can identify the center of the membrane adhered to the adhesive piece. The first camera and the second camera are both connected to the controller, the first camera identifies the center point of the workpiece, and the second camera identifies the center point of the diaphragm, and then makes the center point of the workpiece and the center point of the diaphragm fit to realize the film sticking; The suction hole generates negative pressure, so that the workpiece is sucked on the middle turntable, and the workpiece positioning is convenient.

In the above-mentioned seamless laminating machine, a cylindrical condensing tube is fixed in the frame, a magnifying glass is arranged in the condensing tube, and a mirror is arranged on the inner side wall of the condensing tube, so that the The second camera can face the adhesive piece directly through a magnifying glass. The setting of the mirror increases the brightness, and the setting of the magnifying glass increases the size of the diaphragm, so that the second camera can more accurately grasp the center point of the diaphragm and improve the precision of the film.

Compared with the prior art, the seamless laminating machine provided by the present invention has the following advantages:

1. This seamless laminating machine does not need to use glue in the process of laminating, so as to improve the adhesion between the protective film and the ink on the surface of the workpiece, and achieve seamless lamination.

2. The setting of the conveying rope of this seamless film laminating machine reduces the contact area between the conveying rope and the workpiece, so that the dust is not easy to contaminate the workpiece, and the film quality of the product is improved.

3. The seamless film laminating machine can accurately identify the center point of the workpiece and the diaphragm through the first camera and the second camera, so that the workpiece lamination accuracy is high.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the seamless laminating machine.

Figure 2 is the second schematic diagram of the overall structure of the seamless laminating machine.

FIG. 3 is a schematic diagram of the overall structure of the workpiece of the seamless laminating machine moving with the conveying rope.

Figure 4 is a schematic diagram of the overall structure of the driving roller, driven roller, support roller and conveying rope of the seamless film laminating machine.

Figure 5 is a schematic diagram of the connection of the driving roller, the driven roller, the supporting roller and the conveying rope of the seamless film laminating machine.

Figure 6 is a schematic diagram of the overall structure of the rewinding and unwinding mechanism of the seamless film laminating machine.

FIG. 7 is a schematic structural diagram of the grabbing cylinder and the adhesive part of the seamless film laminating machine.

In the figure, 1, the frame; 2, the workpiece; 3, the middle turntable; 31, the suction hole; 4, the material belt; 5, the rewinding and unwinding mechanism; 51, the second drive; ; 54, the first guide groove; 55, the guide block; 56, the second guide groove; 6, the diaphragm; 7, the grasping mechanism; 71, the grasping cylinder; , feeding frame; 10, driving roller; 11, driven roller; 12, first positioning groove; 13, conveying rope; 14, feeding mechanism; 15, supporting roller; 16, second positioning groove; 17, bearing; 18. Alignment plate; 19. First driver; 20. First camera; 21. Second camera; 22. Condenser.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

As shown in Figure 1 and Figure 2, this seamless laminating machine includes a frame 1, a middle turntable 3, a winding and unwinding mechanism 5, a grabbing mechanism 7, a feeding mechanism 8, a feeding frame 9, a driving roller 10, a driven Roller 11 , conveying rope 13 , feeding mechanism 14 , support roller 15 , first camera 20 and second camera 21 .

In this embodiment, the unloading mechanism 8 and the loading mechanism 14 have the same structure, and both include a sliding frame that can move forward and backward. The sliding frame is provided with a grabbing member that can move up and down. After the pick-up is moved in place, the workpiece is sucked by vacuum for feeding and unloading. In actual production, the sliding frame can be replaced with a mechanical arm. One end of the mechanical arm is connected to the frame, and the other end is provided with a grabbing piece.

The middle turntable 3 is arranged in the frame 1, and the middle of the middle turntable 3 has a suction hole 31 for connecting with the air extraction mechanism. Adsorbed in the middle turntable 3.

The other side of the frame 1 is also provided with a feeding rack 9. As shown in Figure 3, Figure 4, and Figure 5, the feeding frame 9 is provided with a rotatable driving roller 10, a driven roller 11 and a supporting roller 15. A first driver 19 is fixed in the feeding frame 9 , the first driver 19 is connected with the driving roller 10 , and the first driver 19 can drive the driving roller 10 to rotate. The support roller 15 is located between the driving roller 10 and the driven roller 11 , both ends of the support roller 15 are connected to the feeding frame 9 , and bearings 17 are provided between both ends of the supporting roller 15 and the feeding frame 9 . In this embodiment, ten annularly concave first positioning grooves 12 are provided at intervals on the peripheral outer side walls of the driving roller 10 and the driven roller 11 , and ten annular concave first positioning grooves 12 are provided at intervals on the peripheral outer side walls of the support roller 15 . The second positioning groove 16 is annularly concave, the first positioning groove 12 and the second positioning groove 16 are correspondingly arranged, and the number of the support rollers 15 is one. In actual production, the first positioning groove 12 and the second positioning groove 16 The number of the rollers can be eight or sixteen, and the number of the support rollers 15 can be two or three.

The driving roller 10 and the driven roller 11 are tensioned with a conveying rope 13 with a circular cross-section. There is a gap between two adjacent conveying ropes 13 , the conveying ropes 13 can be embedded in the second positioning grooves 16 , and the conveying ropes 13 are partially protruded out of the support roller 15 . The outer diameter of the support roller 15 is smaller than the outer diameter of the driving roller 10 and the driven roller 11. In the vertical direction, the central axis of the supporting roller 15 is located above the central axis of the driving roller 10 and the driven roller 11, and the conveying rope 13 is protruded. The height outside the second positioning groove 16 is greater than the height at which the conveying rope 13 protrudes outside the first positioning groove 12 . The conveying rope 13 has elasticity. In this embodiment, the conveying rope 13 is made of a rubber material. In actual production, the conveying rope 13 can be made of a plastic material or a fiber material.

An alignment plate 18 is fixedly connected to the feeding rack 9. In the vertical direction, the alignment plate 18 is located above the conveying rope 13, the inner side of the alignment plate 18 is parallel to the conveying rope 13, Both ends are rounded.

As shown in FIG. 6 , the winding and unwinding mechanism 5 is arranged on the frame 1 , and the winding and unwinding mechanism 5 includes a release roller, a winding roller, several intermediate rollers and a second driver 51 . One end of the material belt 4 is connected to the release roller, and the other end is connected to the take-up roller after being matched with the intermediate roller. The output shaft of the second driver 51 is fixedly connected with a driving plate 52, and a pair of adjustable and fixed on the driving plate 52 is fixed. The guide plate 53 has a first guide groove 54 between a pair of guide plates 53 , a pair of guide blocks 55 are adjustable and fixed on the second driver 51 , and a second guide groove 56 is formed between the pair of guide blocks 55 . The guide groove 54 is matched with the second guide groove 56 , and the material strip 4 is arranged along the first guide groove 54 and the second guide groove 56 .

As shown in FIG. 7 , the grasping mechanism 7 includes a grasping cylinder 71 that can move up and down, left and right, and the up and down, left and right movement is realized by a screw-slider structure or a cylinder. The up and down movement of the adhesive member 72 is realized by the air cylinder, the grabbing cylinder 71 can move to the driving plate 52, the adhesive member 72 extends out and presses and sticks the diaphragm 6, and then the driving plate 52 moves back to make the diaphragm 6 and the material The belt 4 is separated, and the adhesive member 72 grabs the film 6 and moves and sticks it on the workpiece 2 on the intermediate turntable 3 .

The top of the frame 1 is provided with a first camera 20 , the first camera 20 is directly aligned with the suction hole 31 on the turntable 3 , the bottom of the frame 1 is provided with a second camera 21 , and the frame 1 is fixed with a cylindrical The condensing tube 22 is provided with a magnifying glass in the condensing tube 22, a mirror is arranged on the inner side wall of the condensing tube 22, and the second camera 21 can face the bonding member 72 through the magnifying glass.

When working, place the workpiece 2 on the conveying rope 13 and move with the conveying rope 13. When the workpiece 2 moves to the alignment plate 18, the position is automatically adjusted and moves against the inner side wall of the alignment plate 18. After the detection device detects that the workpiece 2 is in place , the feeding mechanism 14 grabs the workpiece 2 on the conveying rope 13 to the suction hole 31 of the middle turntable 3, the suction mechanism sucks the workpiece 2 to locate the workpiece 2 at the suction hole 31, and the first camera 20 illuminates the workpiece 2 and Passed to the controller to identify the center point of workpiece 2. Place the material tape 4 in the rewinding and unwinding mechanism 5, the rewinding and unwinding mechanism 5 cooperates with the grabbing mechanism 7 to work, the adhesive member 72 sticks the film 6 to separate the film 6 from the material tape 4, and the second camera 21 illuminates and sticks it on the film 6. The film 6 on the adhesive part 72 is transmitted to the controller to identify the center point of the film 6, and then the film 6 moves with the grabbing cylinder 71 and is pasted on the workpiece 2, and the unloading mechanism 8 After the filming is completed, the workpiece 2 is removed, and the filming of a film 6 is completed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Although the frame 1, the workpiece 2, the intermediate turntable 3, the suction hole 31, the material belt 4, the rewinding and unwinding mechanism 5, the second driver 51, the driving plate 52, the guide plate 53, and the first guide groove are used more in this paper 54. Guide block 55, second guide groove 56, diaphragm 6, grabbing mechanism 7, grabbing cylinder 71, adhesive piece 72, unloading mechanism 8, feeding rack 9, driving roller 10, driven roller 11, First positioning groove 12, conveying rope 13, feeding mechanism 14, support roller 15, second positioning groove 16, bearing 17, alignment plate 18, first driver 19, first camera 20, second camera 21, focusing terms such as cartridge 22, but do not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; it is contrary to the spirit of the present invention to interpret them as any kind of additional limitation.

Claims (10)

1. A seamless laminating machine, comprising a frame (1), the frame (1) is provided with a turntable (3) capable of fixing the workpiece (2), and the frame (1) is provided with a turntable (3); A rewinding and unwinding mechanism (5) capable of realizing the movement of the material tape (4), a film (6) in the material tape (4) is provided between the rewinding and unwinding mechanism (5) and the intermediate turntable (3). A grabbing mechanism (7) for grabbing and pasting the workpiece (2) on the intermediate turntable (3), one side of the frame (1) is provided with a workpiece (2) that can be taken off the intermediate turntable (3) The unloading mechanism (8) is characterized in that the other side of the frame (1) is further provided with a feeding frame (9), and a rotatable driving roller (9) is provided on the feeding frame (9). 10) and the driven roller (11), the peripheral outer sidewalls of the driving roller (10) and the driven roller (11) are provided with a number of annularly concave first positioning grooves (12) at intervals, so The driving roller (10) and the driven roller (11) are tensioned with a plurality of conveying ropes (13) with circular cross-sections, and the two ends of the conveying ropes (13) are respectively embedded in the driving roller (13). 10) In the first positioning groove (12) corresponding to the driven roller (11), there is a gap between two adjacent conveying ropes (13), and the feeding rack (9) and the intermediate turntable (3) A feeding mechanism (14) capable of grabbing the workpiece (2) on the conveying rope (13) onto the intermediate turntable (3) is arranged therebetween. 2. A seamless film laminating machine according to claim 1, characterized in that, a plurality of support rollers (15) are further provided on the feeding rack (9), and the support rollers (15) are located on the driving roller Between (10) and the driven roller (11), a plurality of annularly concave second positioning grooves (16) are provided at intervals on the peripheral outer wall of the support roller (15). The second positioning grooves (16) Corresponding to the first positioning groove (12), the conveying rope (13) can be embedded in the second positioning groove (16), and the conveying rope (13) is partially protruded from the support roller (15) outside. 3. A seamless film laminating machine according to claim 2, characterized in that the outer diameter of the support roller (15) is smaller than the outer diameter of the driving roller (10) and the driven roller (11), along the In the vertical direction, the central axis of the support roller (15) is located above the central axis of the driving roller (10) and the driven roller (11), and the conveying rope (13) is protruded from the second positioning groove The height outside (16) is greater than the height at which the conveying rope (13) protrudes outside the first positioning groove (12). 4. A seamless film laminating machine according to claim 2, characterized in that both ends of the support roller (15) are connected to the feeding rack (9), and both ends of the support roller (15) are connected to the feeding frame (9). Bearings (17) are arranged between the ends and the feeding rack (9). 5. A seamless film laminating machine according to any one of claims 1-4, characterized in that, an alignment plate (18) is fixedly connected to the feeding rack (9), and along the vertical direction, all the The alignment plate (18) is located above the conveying rope (13), the inner side of the alignment plate (18) is parallel to the conveying rope (13), and the two ends of the inner side of the alignment plate (18) are inverted round. 6. A seamless laminating machine according to any one of claims 1-4, characterized in that, a first driver (19) is fixedly connected in the feeding rack (9), and the first driver ( 19) is connected with the driving roller (10), and the first driver (19) can drive the driving roller (10) to rotate. 7. A seamless laminating machine according to any one of claims 1-4, characterized in that the grabbing mechanism (7) comprises a grabbing cylinder (71) that can move up, down, left and right, and the grabbing mechanism (7) The drum (71) is provided with an adhesive member (72) that can move up and down relative to the grabbing drum (71). A drive plate (52) is fixedly connected to the output shaft of the machine, the grabbing cylinder (71) can move to the drive plate (52), and the adhesive piece (72) can be grabbed by the movement of the drive plate (52). Diaphragm (6) in tape (4). 8 . The seamless laminating machine according to claim 7 , wherein a pair of guide plates ( 53 ) are adjustable and fixed on the drive plate ( 52 ), and a pair of the guide plates ( 53 ) are fixed and adjustable. 9 . There is a first guide groove (54) therebetween, a pair of guide blocks (55) are adjustable and fixed on the second driver (51), and a second guide groove (55) is provided between the pair of guide blocks (55). 56), the material belt moves along the first guide groove (54) and the second guide groove (56). 9. A seamless film laminating machine according to claim 7, characterized in that a first camera (20) is provided on the top of the frame (1), and a center of the middle turntable (3) is provided with a plurality of cameras (20). There are two suction holes (31) for connecting with the suction mechanism, the first camera (20) is directly aligned with the suction holes (31) on the turntable (3), and the bottom of the frame (1) is provided with a suction hole (31). There is a second camera (21), which can identify the center of the membrane adhered to the adhesive (72). 10. A seamless laminating machine according to claim 9, characterized in that a cylindrical condensing tube (22) is fixedly connected in the frame (1), and the condensing tube (22) A magnifying glass is arranged in the middle, a mirror is arranged on the inner side wall of the condensing tube (22), and the second camera (21) can face the bonding member (72) directly through the magnifying glass.

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