Automatic film sticking machine

Abstract

The utility model relates to the technical field of packaging machinery, in particular to an automatic film sticking machine. A first guide rail is arranged at the upper part of the rack; the portal frame is provided with a film pasting machine head, the lower portion of the portal frame is provided with a first sliding block, the first sliding block is matched with the first guide rail, and the portal frame is driven by a front-back moving mechanism to move front and back; the front-back movement detection device is arranged on one side or two sides of the rack and is used for detecting whether the materials are in place or not; a left-right moving mechanism is further arranged between the portal frame and the film pasting machine head and used for left-right moving of the film pasting machine head. Left-right movement detection devices are arranged on the two sides of the film pasting machine head and used for detecting whether the film pasting machine head moves left and right in place or not. The portal frame can move back and forth on the rack and is matched with the detection device to achieve dynamic tracking film pasting. Through precise control of the chain transmission system and the first driving device, the portal frame can move front and back, parallel operation of material conveying and film pasting procedures is achieved, and the limitation that traditional equipment needs to be shut down for film pasting is broken through.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing machinery technical field, concretely relates to a kind of automatic film sticking machine. BACKGROUND

[0002] Gypsum board is made of building gypsum as main raw material, it is a kind of light weight, higher strength, thick thinner, easy to process and sound insulation, heat insulation and fire resistance and other properties good building material, is one of the new light board currently developed, gypsum board has been widely used in residential, office building, shop, hotel and industrial plant and other various buildings interior partition, wall covering panel (instead of wall plaster layer), ceiling, sound-absorbing board, ground base plate and various decorative boards etc., in the process of gypsum board packaging, usually use film to wind the two sides of gypsum board stack and package, and the two ends of gypsum board stack are not treated, so that gypsum board is prone to damp, dust collection.

[0003] Patent CN202421002534.3 a film sticking machine head and its novel double-sided automatic film sticking device, can be on the two ends of gypsum board stack film packaging, there are still the following problems at present:

[0004] 1, to the rear end of gypsum board stack film, in the last need to brush film to the upper edge of stone board stack, because portal frame is fixed, the traditional brushing process needs gypsum board stack to move backward to realize, because continuously stacking gypsum board stack on conveying line, if conveying line moves backward, it will affect the stacking process, reduce efficiency and affect work rhythm.

[0005] 2, film sticking machine head is set in the middle of portal frame, if the left and right positions of gypsum board stack on conveying belt are skewed, film sticking is also skewed, affect film sticking quality.

[0006] 3, film roll on film sticking machine head is replaced complicatedly and replacement parts are heavy, single person is difficult to complete operation.

[0007] 4, the existing lifting device only presses the film in the middle, the film at the bottom corner of gypsum board stack is prone to not be tightly pasted. INVENTION CONTENTS

[0008] The utility model provides a kind of automatic film sticking machine, its purpose is to improve the efficiency and quality of film sticking.To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0009] An automatic film sticking machine, comprising:

[0010] Frame, the upper portion of which is provided with a first guide rail;

[0011] Portal frame, a film sticking machine head is arranged on the upper portion of the portal frame, and a first sliding block is arranged on the lower portion of the portal frame, the first sliding block is matched with the first guide rail, and the portal frame is moved forward and backward under the driving of a forward and backward moving mechanism.

[0012] Front and back movement detection device, set in one side or both sides of the rack, for detecting whether the material is in place;

[0013] The gantry and the film sticking head are also provided with a left and right movement mechanism for left and right movement of the film sticking head;

[0014] The film sticking head is provided with a left and right movement detection device on both sides for detecting whether the film sticking head moves left and right to place.

[0015] Further, the front and back movement mechanism includes a first driving device, a driving sprocket, a driven sprocket, a first chain and a second chain;

[0016] The first driving device is arranged on the rack, the driving sprocket and the driven sprocket are arranged at the front and back ends of the gantry; the first chain is connected with the driving sprocket and the driven sprocket; the output sprocket of the first driving device drives the driving sprocket to rotate through the second chain; the first driving device drives the gantry to move forward and backward through the first chain.

[0017] Further, the left and right movement mechanism includes a second driving device, a first lead screw, a first nut, a second guide rail and a second sliding block;

[0018] The film sticking head is provided with a first nut and a second sliding block; the gantry is provided with a second driving device and a second guide rail; the second driving device drives the first lead screw to rotate through a shaft coupling, the first lead screw cooperates with the first nut, and the second sliding block cooperates with the second guide rail; the second driving device drives the film sticking mechanism to move left and right along the second guide rail.

[0019] Further, the film sticking head is also provided with an offset compensation mechanism for adjusting the film sticking direction of the film sticking head when the end face of the material is not perpendicular to the advancing direction of the conveying line.

[0020] Further, the offset compensation mechanism includes a head frame body, a fifth driving device, a third guide rail, a third sliding block, a smoothing roller, a connecting plate and a brush; the fifth driving device drives the connecting plate to move forward and backward along the third guide rail through the third sliding block and the third guide rail, the brush is installed on one side of the smoothing roller; the connecting plate is provided with an elongated hole, and the smoothing roller is rotatably connected with the elongated hole through a rotating shaft.

[0021] Further, the film sticking head is provided with a hollow film roll changing assembly, which includes a supporting seat, a left end shaft, a right end shaft and a pressing mechanism; the left end shaft is rotatably arranged on the supporting seat, the right end shaft is arranged on the pressing mechanism, and the hollow film roll is arranged between the left end shaft and the right end shaft and is pressed by the pressing mechanism.

[0022] Further, the pressing mechanism comprises a second screw rod, a second supporting nut and a hand wheel; one end of the second screw rod is connected with the hand wheel, the other end is connected with the right end shaft through a bearing, and the second screw rod is matched with the second supporting nut; when the hand wheel is rotated, the right end shaft advances to press the hollow film roll.

[0023] Further, the left end shaft and the right end shaft are conical, and the conical surface is provided with a convex.

[0024] Further, the rack is provided with a jacking device for pressing the film on the material; the jacking device comprises a jacking frame, a first pressing frame, a second pressing frame, a third driving device and a fourth driving device.

[0025] The jacking frame moves up and down under the action of the third driving device, the first pressing frame is arranged at the middle part of the jacking frame, the cylinder barrel of the fourth driving device is arranged at the two sides of the jacking frame, the second pressing frame is arranged on the cylinder rod of the fourth driving device, and the fourth driving device drives the second pressing frame to move left and right.

[0026] Further, the third driving device is a double-stroke air cylinder.

[0027] The beneficial effects achieved by the utility model are as follows:

[0028] The gantry can move forward and backward on the rack, and dynamic tracking film pasting is realized by cooperating with the forward and backward moving detection device. Through the precise control of the chain transmission system and the first driving device, the gantry can move forward and backward. When the rear end surface of the gypsum board stack is pasted with the film, the gypsum board stack does not need to retreat, and the film upper edge can be brushed only by moving the gantry forward. The film pasting efficiency is improved, and the rhythm of the whole gypsum board stack moving forward is not affected. After the front end surface is pasted with the film, the gypsum board stack moves forward, and the gantry can move backward at the same time, so that the film pasting process time is shortened, and the film pasting efficiency is further improved.

[0029] The left and right moving mechanism integrates the screw rod guide rail system, the double detection device and the offset compensation mechanism, and the position of the film pasting head is fine adjusted through the second driving device. Combined with the material position detection function, the offset error of the gypsum board stack can be automatically corrected, and the packaging film pasting problem caused by the deviation is effectively solved.

[0030] The hollow film roll changing assembly adopts the conical end shaft matched with the screw pressing mechanism, and the convex of the conical surface improves the friction force. One person can quickly change through the hand wheel operation, the pressing force can be infinitely adjusted through the screw rod mechanism, and the operation strength and safety hidden danger are reduced.

[0031] The double-cylinder jacking device adopts a split pressing frame structure, and the double-stroke cylinder realizes two-stage jacking: the first stroke of the third driving device lifts the jacking frame, and the fourth driving device and the second pressing frame are lifted from below the rack; the fourth driving device acts to drive the two pressing frames to move to below the corners of the gypsum board stack; the second stroke of the third driving device lifts the first pressing frame and the second clamping frame again, and the film is attached to the bottom and corners of the gypsum board stack. The second pressing frame presses the corners to avoid film falling off. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0033] Figure 1 It is a front view structural schematic diagram of an automatic film sticking machine;

[0034] Figure 2 It is a side view structural schematic diagram of an automatic film sticking machine;

[0035] Figure 3 It is a front view structural schematic diagram of a front and rear moving mechanism of an automatic film sticking machine;

[0036] Figure 4 It is a side view structural schematic diagram of a front and rear moving mechanism of an automatic film sticking machine;

[0037] Figure 5 It is a structural schematic diagram of a left and right moving mechanism of an automatic film sticking machine;

[0038] Figure 6 It is a structural schematic diagram of a hollow film roll replacing assembly of an automatic film sticking machine;

[0039] Figure 7 It is a structural schematic diagram of a jacking device of an automatic film sticking machine;

[0040] Figure 8 It is a structural schematic diagram of a smoothing roller connecting structure of an automatic film sticking machine;

[0041] Figure 9 It is a schematic diagram of a smoothing roller of an automatic film sticking machine changing from a horizontal state to a skew state.

[0042] In the drawings, 1, rack; 11, first guide rail;

[0043] 2, gantry; 21, first sliding block;

[0044] 3, front and back moving mechanism; 31, first driving device; 311, chain transmission system; 3111, driving sprocket; 3112, driven sprocket; 3113, first chain; 3114, second chain; 32, front and back moving detection device;

[0045] 4, left and right moving mechanism; 41, second driving device; 42, first lead screw; 43, first nut; 44, second guide rail; 45, second sliding block; 46, left and right moving detection device;

[0046] 5, jacking device; 51, jacking frame; 52, first pressing frame; 53, second pressing frame; 54, third driving device; 55, fourth driving device;

[0047] 6, film laminating machine head; 61, hollow film roll changing assembly; 611, support seat; 612, left end shaft; 613, right end shaft; 614, pressing mechanism; 6141, second lead screw; 6142, second support nut; 6143, hand wheel; 62, hollow film roll; 63, machine head body; 64, fifth driving device; 65, third guide rail; 66, third sliding block; 67, connecting plate; 671, rotating shaft; 672, long hole; 68, smoothing roller; 69, brush.

[0048] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0050] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0051] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0052] As shown in Figures 1-8 An automatic film laminating machine, a gantry 2 is provided with a laminating head 6, which is used for laminating materials, and the laminating machine further comprises: a front and rear moving mechanism 3, a left and right moving mechanism 4 and a jacking device 5. The material is taken as a gypsum board stack.

[0053] The front and rear moving mechanism 3 comprises a chain transmission system 311 and a front and rear moving detection device 32, and the chain transmission system 311 comprises a driving sprocket 3111, a driven sprocket 3112 and a chain 3113.

[0054] The gantry 2 is provided with a first sliding block 21 at the lower part, and the first sliding block 21 is matched with the first guide rail 11, and the gantry 2 is driven by the front and rear moving mechanism 3 to realize the front and rear movement.

[0055] The gantry 2 is provided with a first sliding block 21 at the lower part, and the first sliding block 21 is matched with the first guide rail 11, and the gantry 2 is driven by the front and rear moving mechanism 3 to realize the front and rear movement.

[0056] The front and rear moving mechanism 3 comprises a first driving device 31 and a chain transmission system 311; the chain transmission system 311 comprises a driving sprocket 3111, a driven sprocket 3112, a first chain 3113 and a second chain 3114, and the chain transmission system 311 is driven by the first driving device 31 to realize the front and rear movement of the gantry 2, and the first driving device 31 is a motor.

[0057] The first driving device 31 is arranged on the frame 1, and the driving sprocket 3111 and the driven sprocket 3112 are arranged at the front and rear ends of the gantry 2; the first chain 3113 is connected with the driving sprocket 3111 and the driven sprocket 3112; the output sprocket of the first driving device 31 drives the driving sprocket 3111 to rotate through the second chain 3114; a plurality of sprocket discs are arranged on the driving sprocket, one sprocket disc is connected with the second chain 3114, and the other sprocket disc is connected with the first chain 3113; the first driving device 31 drives the gantry 2 to move forward and backward through the first chain 3113.

[0058] The first guide rail 11 cooperates with the first sliding block 21 of the gantry 2 to form a high-precision sliding pair, so that the gantry 2 moves stably along the conveying direction;

[0059] The front and rear movement detection device 32 is arranged on one side or both sides of the frame 1 and is used for detecting whether the material is in place. In the embodiment, the material is a gypsum board stack, and the front and rear movement detection device 32 is a photoelectric detector, which is arranged on both sides of the frame 1.

[0060] After the front and rear movement detection device 32 detects that the gypsum board stack is in place, the conveying belt stops conveying the gypsum board stack, and the gantry 2 also moves forward to a position, ready for film pasting. The film pasting head 6 moves downward to a position, conveying the film to the lower side of the gypsum board stack, and the jacking device 5 acts to press the film on the bottom corner of the gypsum board stack. Then, the film pasting head 6 pulls the film to the front end face of the gypsum board stack, and when the film is pulled to the upper side of the gypsum board stack, the conveying belt drives the gypsum board stack to move forward, and the gantry 2 moves backward under the driving of the driving device 31, pastes the film to the upper edge of the gypsum board stack, and then cuts the film. The conveying belt drives the gypsum board stack to continue moving forward, and the gantry 2 continues to move backward under the driving of the driving device 31, and when the gypsum board stack and the gantry 2 stop moving, the film pasting head 6 rotates by 180 degrees, ready for pasting the film on the other end face of the gypsum board stack. Similarly, the film pasting head 6 moves downward to a position, conveying the film to the lower side of the gypsum board stack, and the jacking device 5 acts to press the film on the bottom corner of the gypsum board stack. Then, the film pasting head 6 pulls the film to the rear end face of the gypsum board stack, and when the film is pulled to the upper side of the gypsum board stack, the gantry 2 moves forward under the driving of the driving device 31, pastes the film to the upper edge of the gypsum board stack, and then the gantry 2 continues to move forward to a position, and the gypsum board stack with the pasted film continues to move forward, leaving space, ready for pasting the film on the next gypsum board stack.

[0061] A left and right movement mechanism 4 is further arranged between the gantry 2 and the film pasting head 6 and is used for moving the film pasting head 6 leftward and rightward. The left and right movement mechanism 4 drives the film pasting head 6 to make lateral fine adjustment, and when the gypsum board stack is not placed in the center of the conveying, the left and right positions of the film pasting head 6 can be adjusted to align the film pasting head 6 with the gypsum board stack, so that the end face of the gypsum board stack is pasted with the film.

[0062] The left and right moving mechanism 4 comprises a second driving device 41, a first screw rod 42, a first nut 43, a second guide rail 44 and a second sliding block 45; the first nut 43 and the second sliding block 45 are arranged on the film pasting head 6; the second driving device 41 and the second guide rail 44 are arranged on the gantry 2; the second driving device 41 drives the first screw rod 42 to rotate through a shaft coupling, the first screw rod 42 cooperates with the first nut 43, and the second sliding block 45 cooperates with the second guide rail 44; the second driving device 41 drives the film pasting mechanism to move left and right along the second guide rail 44, and the second driving device 41 is a motor.

[0063] The film pasting head 6 is provided with left and right moving detection devices 46 on both sides, which are used for detecting the position of the film pasting structure moving left and right. The left and right moving detection devices 46 are photoelectric detectors. When the photoelectric detector on the left side cannot detect the gypsum board stack, it indicates that the gypsum board stack is placed too far to the right. The left and right moving mechanism 4 drives the film pasting head 6 to move to the right until the photoelectric detector on the left side can detect the gypsum board stack. Similarly, when the photoelectric detector on the right side cannot detect the gypsum board stack, the left and right moving mechanism 4 drives the film pasting head 6 to move to the left until the photoelectric detector on the right side can detect the gypsum board stack.

[0064] The second driving device 41 drives the first screw rod 42 to rotate through a shaft coupling, drives the first nut 43 on the film pasting head 6 to move transversely, cooperates with the second guide rail 44 and the second sliding block 45 to guide the left and right movement, and combines with the bilateral detection device to detect the deviation of the gypsum board stack to avoid misplacement of the film pasting.

[0065] As shown in Figure 8 The film pasting head 6 is provided with an offset compensation mechanism. When the gypsum board stack is inclined, that is, the end face of the gypsum board stack is not perpendicular to the advancing direction of the conveying line, it uses the rotatable structure of the parallelogram to paste the flattening roller 68 to the gypsum board stack. The specific structure comprises a head frame body 63, a fifth driving device 64, a third guide rail 65, a third sliding block 66, a flattening roller 68, a connecting plate 67 and a brush 69, and the fifth driving device 64 is a pneumatic cylinder. The fifth driving device 64 drives the connecting plate 67 to move forward and backward along the third guide rail 65 through the third sliding block 66 and the third guide rail 65, and the brush 69 is installed on one side of the flattening roller 68. Long holes 672 are arranged on the connecting plates 67 on both sides respectively, and the flattening roller 68 is rotatably connected with the long holes 672 on both sides through a rotating shaft 671. As shown in Figure 9 When the end face of the gypsum board stack is inclined, the elongation of the fifth driving device 64 at both ends is different, that is, the elongation of the cylinder rod of the pneumatic cylinder is different, the rotating shaft 671 rotates in the long hole 672 and has a certain sliding, so as to realize the deflection of the flattening roller 68 within a certain angle to compensate for the inclination of the end face of the gypsum board stack, and the brush 69 is tightly attached to the end face of the gypsum board stack by the flattening roller 68.

[0066] The film laminating machine head 6 is provided with a hollow film roll changing assembly 61, which comprises a support seat 611, a left end shaft 612, a right end shaft 613 and a pressing mechanism 614; the left end shaft 612 is rotatably arranged on the support seat 611, the right end shaft 613 is arranged on the pressing mechanism 614, the hollow film roll 62 is arranged between the left end shaft 612 and the right end shaft 613 and is pressed by the pressing mechanism 614. The hollow film roll changing assembly 61 realizes quick clamping and changing of the film roll.

[0067] The pressing mechanism 614 comprises a second lead screw 6141, a second support nut 6142 and a hand wheel 6143; one end of the second lead screw 6141 is connected with the hand wheel 6143, the other end is connected with the right end shaft 613 through a bearing, the second lead screw 6141 cooperates with the second support nut 6142, and when the hand wheel 6143 is rotated, the right end shaft 613 advances to press the hollow film roll 62. The left end shaft 612 and the right end shaft 613 are arranged in a conical shape, and a protrusion is arranged on the conical surface to increase the friction force.

[0068] The conical surface and the protrusion structure of the left end shaft 612 and the right end shaft 613 increase the friction force with the inner hole of the film roll and prevent slipping; the hand wheel 6143 drives the second lead screw 6141 to rotate and pushes the right end shaft 613 to move axially, thereby realizing quick clamping / release of the film roll.

[0069] The machine frame 1 is provided with a jacking device 5 for pressing the film on the material; the jacking device 5 comprises a jacking frame 51, a first pressing frame 52, a second pressing frame 53, a third driving device 54 and a fourth driving device 55, and the third driving device 54 and the fourth driving device 55 are air cylinders.

[0070] The jacking frame 51 moves up and down under the action of the third driving device 54, the first pressing frame 52 is arranged at the middle part of the jacking frame 51, the cylinder barrel of the fourth driving device 55 is arranged on both sides of the jacking frame 51, the second pressing frame 53 is arranged on the cylinder rod of the fourth driving device 55, and the fourth driving device 55 drives the second pressing frame 53 to move left and right. The third driving device 54 is a double-stroke air cylinder. A guide rod is arranged on the jacking frame 51, a guide rail is arranged on the machine frame 1, the guide rod moves up and down on the guide rail, and the guide rod and the guide rail stabilize the movement of the jacking frame 51. A guide rail is also arranged on the jacking frame 51, a guide sliding block is arranged on the second pressing frame 53, the guide sliding block moves on the guide rail, and the guide rail and the guide block stabilize the movement of the second pressing frame 53. Hard sponges are also arranged on the first pressing frame 52 and the second pressing frame 53, which can make the film adhere more tightly to the gypsum board stack.

[0071] The jacking device 5 applies directional pressure to the corners of the gypsum board stack to strengthen the film fitting. The double-cylinder jacking device 5 adopts a split pressing frame structure, and the double-stroke cylinders realize two-stage jacking: the first stroke of the third driving device 54 lifts the jacking frame 51, and the fourth driving device 55 and the second pressing frame 53 are lifted from below the rack 1; the fourth driving device 55 is actuated to drive the two pressing frames to move to below the corners of the gypsum board stack; the second stroke of the third driving device 54 lifts the first pressing frame 52 and the second clamping frame again to fit the film to the bottom and corners of the gypsum board stack. The second pressing frame 53 presses the film to the corners to avoid film falling off.

[0072] The working process of the jacking device 5 is as follows: the third driving device 54 first performs a stroke, and the first pressing frame 52 and the second pressing frame 53 are lifted to the upper part of the rack 1 to provide space for the movement of the second pressing frame 53; then the two fourth driving devices 55 actuate the two second pressing frames 53 to move inward, so that the second pressing frames 53 are moved to the bottom corners of the gypsum board stack; finally, the third driving device 54 performs another stroke, and the first pressing frame 52 and the second pressing frame 53 press the film to the bottom and corners of the gypsum board stack. After the film fitting to the bottom and corners of the gypsum board stack is completed, the third driving device 54 is retracted by one stroke, the fourth driving device 55 is retracted, and finally the third driving device 54 is retracted by one stroke, waiting for the next action.

[0073] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An automatic film applicator, characterized in that, include: The frame (1) has a first guide rail (11) on its upper part; A gantry frame (2) is provided with a film applicator head (6) and a first slider (21) is provided at its lower part. The first slider (21) cooperates with the first guide rail (11) and the gantry frame (2) moves back and forth under the drive of the forward and backward moving mechanism (3). A forward and backward movement detection device (32) is set on one or both sides of the frame (1) to detect whether the material is in place; A left-right moving mechanism (4) is also provided between the gantry (2) and the film applicator head (6) for the left-right movement of the film applicator head (6); The film applicator head (6) is provided with left and right movement detection devices (46) on both sides to detect whether the left and right movement of the film applicator head (6) is in place.

2. An automatic film applicator according to claim 1, characterized in that: The forward and backward moving mechanism (3) includes a first driving device (31), a driving sprocket (3111), a driven sprocket (3112), a first chain (3113), and a second chain (3114); The first drive device (31) is mounted on the frame (1), and the drive sprocket (3111) and the driven sprocket (3112) are mounted at the front and rear ends of the gantry (2); the first chain (3113) is connected to the drive sprocket (3111) and the driven sprocket (3112); the output sprocket of the first drive device (31) drives the drive sprocket (3111) to rotate through the second chain (3114); the first drive device (31) drives the gantry (2) to move back and forth through the first chain (3113).

3. An automatic film applicator according to claim 1, characterized in that: The left and right moving mechanism (4) includes a second driving device (41), a first lead screw (42), a first lead screw nut (43), a second guide rail (44), and a second slider (45); The film applicator head (6) is provided with a first screw nut (43) and a second slider (45); the gantry frame (2) is provided with a second drive device (41) and a second guide rail (44); the second drive device (41) drives the first screw (42) to rotate through a coupling, the first screw (42) cooperates with the first screw nut (43), and the second slider (45) cooperates with the second guide rail (44); the rotation of the second drive device (41) drives the film applicator to move left and right along the second guide rail (44).

4. An automatic film applicator according to claim 1, characterized in that: The film applicator head (6) is also equipped with an offset compensation mechanism, which is used to adjust the film applicator head (6) direction when the end face of the material is not perpendicular to the direction of the conveyor line.

5. An automatic film applicator according to claim 4, characterized in that: The offset compensation mechanism includes a head frame (63), a fifth drive device (64), a third guide rail (65), a third slider (66), a smoothing roller (68), a connecting plate (67), and a brush (69). The fifth drive device (64) pushes the connecting plate (67) to move back and forth along the third guide rail (65) through the third slider (66) and the third guide rail (65). The brush (69) is installed on one side of the smoothing roller (68). The connecting plate (67) is provided with an elongated hole (672), and the smoothing roller (68) and the elongated hole (672) are rotatably connected through a rotating shaft (671).

6. An automatic film applicator according to claim 1, characterized in that: The film applicator head (6) is provided with a hollow film roll replacement assembly (61). The hollow film roll replacement assembly (61) includes a support base (611), a left end shaft (612), a right end shaft (613), and a pressing mechanism (614). The left end shaft (612) is rotatably mounted on the support base (611), the right end shaft (613) is mounted on the pressing mechanism (614), and the hollow film roll (62) is mounted between the left end shaft (612) and the right end shaft (613) and pressed by the pressing mechanism (614).

7. An automatic film applicator according to claim 6, characterized in that: The pressing mechanism (614) includes a second lead screw (6141), a second support nut (6142), and a handwheel (6143); one end of the second lead screw (6141) is connected to the handwheel (6143), and the other end is connected to the right end shaft (613) through a bearing. The second lead screw (6141) cooperates with the second support nut (6142); when the handwheel (6143) is rotated, the right end shaft (613) moves forward to press the hollow film roll (62).

8. An automatic film applicator according to claim 6, characterized in that: The left end shaft (612) and the right end shaft (613) are tapered, and protrusions are provided on the tapered surface.

9. An automatic film applicator according to claim 1, characterized in that: The frame (1) is provided with a lifting device (5) for pressing the film onto the material; the lifting device (5) includes a lifting frame (51), a first pressing frame (52), a second pressing frame (53), a third driving device (54), and a fourth driving device (55); The lifting frame (51) moves up and down under the action of the third drive device (54). The first clamping frame (52) is located in the middle of the lifting frame (51). The cylinder of the fourth drive device (55) is located on both sides of the lifting frame (51). The second clamping frame (53) is provided on the cylinder rod of the fourth drive device (55). The fourth drive device (55) drives the second clamping frame (53) to move left and right.

10. An automatic film applicator according to claim 9, characterized in that: The third drive device (54) is a double-stroke cylinder.

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