Film breaking and connecting mechanism

Abstract

This invention relates to the field of coating equipment technology, and more particularly to a film cutting and splicing mechanism. The film cutting and splicing mechanism includes a frame, a splicing table, a film suction assembly, a film cutting assembly, and a film splicing assembly. The splicing table is vertically and flexibly mounted within the frame. The film suction assembly includes a first suction box and a second suction box, located on the upper and lower sides of the splicing table, respectively. The first suction box can suction the tail end of the old film, and the second suction box can suction and fix the head end of the new film onto the splicing table. The splicing table can stack the new head end below the old tail end. The film cutting assembly is located on one side of the splicing table and can cut the overlapping portion of the new and old films along the film width direction to form a new head end of the new film and a new tail end of the old film, with the new head end and new tail end abutting to form a joint. The film splicing assembly is vertically and flexibly mounted on the frame and located above the splicing table. The film splicing assembly can press against the splicing table to adhere the joint, improving the flatness of the joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating equipment, in particular to a film breaking and connecting mechanism. BACKGROUND

[0002] The coating equipment is mainly used for surface coating process production of film body, paper and the like. The film body (or paper) to be coated is unwound from the front film roll, sequentially passes through flattening, coating and other processes, and then is rewound by the rear film roll.

[0003] At present, in order to ensure the smoothness of the coating process, a film breaking and connecting mechanism is needed to butt joint the film body of the old film roll and the film body of the new film roll. The conventional film connecting operation is to stack the old film body and the new film body together, and then connect the new film body and the old film body into one body through adhesion and other processes. The existing film connecting operation has the problem that the joint part of the new film body and the old film body has a large thickness difference with other parts of the film body, which easily causes the coating head to jump during coating, thereby reducing the coating quality and coating precision. Meanwhile, the joint part is prone to wrinkles, and the flatness is difficult to meet the use requirements, resulting in the generation of waste.

[0004] Therefore, there is an urgent need for a film breaking and connecting mechanism to solve the above problems. SUMMARY

[0005] The present application aims to provide a film breaking and connecting mechanism to improve the flatness of the butt joint, avoid wrinkles and coating head jumping of the butt joint, and avoid waste of the butt joint.

[0006] To achieve this purpose, the technical solution adopted by the present application is:

[0007] A film breaking and connecting mechanism, comprising:

[0008] a rack and a film connecting table, the film connecting table being arranged in the rack in a liftable manner;

[0009] a film suction assembly, comprising a first film suction box and a second film suction box, the first film suction box and the second film suction box being respectively arranged on the upper and lower sides of the film connecting table, the first film suction box being capable of suctioning the tail of the old film, and the second film suction box being capable of suctioning and fixing the head of the new film on the film connecting table; the film connecting table being capable of stacking the head of the new film below the tail of the old film;

[0010] a film breaking assembly arranged on one side of the film connecting table and capable of cutting the stacking part of the new film and the old film in the film width direction to form a new head of the new film and a new tail of the old film, and the new head and the new tail butt joint to form a butt joint; and

[0011] A film bonding assembly is vertically mounted on the frame and located above the film bonding platform. The film bonding assembly is configured to press against the film bonding platform to bond the mating joint.

[0012] As a preferred embodiment, the film suction assembly further includes:

[0013] A guide post and a carrier plate, wherein the guide post is vertically disposed within the frame, and the carrier plate is slidably disposed on the guide post; a second film suction box is disposed on the carrier plate, and a film receiving platform is disposed above the second film suction box; and

[0014] A first driving member is disposed within the frame. The output end of the first driving member is connected to the carrier plate and can drive the carrier plate to rise so that the head of the new membrane on the membrane bonding platform is stacked below the tail of the old membrane.

[0015] As a preferred embodiment, the membrane rupture assembly includes:

[0016] A second rodless cylinder includes a second cylinder band and a second slider. The second cylinder band is disposed on the carrier plate and extends along the direction of the membrane width. The second slider is slidably disposed on the second cylinder band.

[0017] The cutting tool, the film-attaching stage having a cutting channel, the cutting tool being connected to the second slider and being able to slide within the cutting channel to cut the overlapping portion of the new film and the old film.

[0018] As a preferred embodiment, the membrane assembly includes:

[0019] The third film suction box is configured to absorb or release adhesive tape; and

[0020] The second driving component has its output shaft connected to the third film suction box to drive the third film suction box to press against the film receiving platform and adhere the tape to the mating joint.

[0021] As a preferred embodiment, the membrane assembly further includes:

[0022] The pulley block is fixedly mounted on the output shaft of the second drive member; and

[0023] The slide rail slides in conjunction with the pulley block and is connected to the third suction box. The slide rail has a first position and a second position along the length of the frame. When the slide rail slides to the second position, the third suction box is located outside the frame and can absorb the tape.

[0024] As a preferred embodiment, the membrane assembly further includes:

[0025] A push-pull rod is connected to the slide rail, and one end of the push-pull rod extends to the outside of the platform and has a handle.

[0026] As a preferred embodiment, the membrane disconnection and reconnection mechanism further includes:

[0027] The fan and branch pipes, one end of each of the branch pipes can be connected to the first suction box, the second suction box and the third suction box respectively, and the suction port of the fan can be selectively connected to the other end of one or more of the branch pipes to open the corresponding first suction box, second suction box and third suction box.

[0028] As a preferred embodiment, the membrane disconnection and reconnection mechanism further includes:

[0029] The smoothing component is configured to slide back and forth along the cutting direction of the membrane assembly to smooth the mating joint.

[0030] As a preferred embodiment, the smoothing component includes:

[0031] A first rodless cylinder includes a first cylinder band and a first slider. The first cylinder band is disposed on the test bench and extends along the cutting direction of the membrane breaking assembly. The first slider is slidably disposed on the first cylinder band.

[0032] A smoothing block, connected to the first slider and located above the mating joint, is capable of sliding synchronously with the first slider to smooth the mating joint.

[0033] As a preferred embodiment, the film suction assembly further includes a third driving component, which is disposed on the frame. At least two first film suction boxes are provided, and the output ends of the plurality of third driving components are respectively connected to the corresponding first film suction boxes in a transmission connection.

[0034] When the tail of the old film is cut to form the new tail and the removed old tail, part of the first suction box releases the old tail to remove it, thereby forming a mating joint on the film splicing table; the remaining first suction box adsorbs and presses the new tail.

[0035] The beneficial effects of this invention are as follows:

[0036] The film-cutting and splicing mechanism proposed in this invention involves a first suction box adsorbing the tail end of the old film, a second suction box adsorbing and fixing the head end of the new film onto a splicing platform, and then the splicing platform stacking the head end of the new film below the tail end of the old film. The film-cutting assembly cuts the overlapping portion of the new and old films along the film width direction to form a new head end of the new film and a new tail end of the old film. The new head end and the new tail end are then joined to form a butt joint. Finally, the splicing assembly bonds the butt joint, thus connecting the new and old films. This film-cutting and splicing mechanism can cut and then join the overlapping portion of the new and old films, avoiding overlapping at the butt joint. This ensures that the thickness of the butt joint is consistent with that of the new and old films, improving the flatness of the butt joint and preventing wrinkles, thus guaranteeing the quality of the butt joint and avoiding waste. Furthermore, since there is no thickness difference between the butt joint and the new and old films, the coating head of the coating machine will not skip when the butt joint passes through it, which helps improve coating accuracy. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the forward structure of the membrane splicing and disconnection mechanism provided in this embodiment of the invention, before the new membrane head is stacked below the old membrane tail. Figure 1 ;

[0038] Figure 2 This is a schematic diagram of the lateral structure of the membrane splicing mechanism provided in an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the forward structure of the membrane splicing and disconnection mechanism provided in this embodiment of the invention, where the new membrane head is stacked below the old membrane tail. Figure 2 .

[0040] The component names and labels in the diagram are as follows:

[0041] 10. Old film; 20. New film; 30. First roll; 40. Second roll;

[0042] 1. Stand; 2. Film splicing station;

[0043] 3. Film suction assembly; 31. First film suction box; 32. Second film suction box; 33. Guide post; 34. Carrier plate; 35. First driving component; 36. Third driving component;

[0044] 4. Fan; 41. Branch piping;

[0045] 5. Membrane cutting assembly; 51. Second rodless cylinder; 52. Second slider; 53. Cutting tool;

[0046] 6. Film splicing assembly; 61. Third film suction box; 62. Second drive unit; 63. Slide rail; 64. Pulley block; 65. Push-pull rod;

[0047] 7. Smoothing component; 71. First rodless cylinder; 72. First slider; 73. Smoothing block. Detailed Implementation

[0048] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0049] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0052] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0053] Existing membrane splicing mechanisms stack old and new membranes together, resulting in a significant thickness difference between the joint between the new and old membranes and the rest of the membrane. This not only easily causes the coating head to skip during coating, reducing coating quality and precision, but also makes the joint prone to wrinkles, making it difficult to meet flatness requirements and generating waste.

[0054] To solve the above problems, such as Figures 1-3 As shown, this embodiment discloses a film cutting and splicing mechanism, specifically including a frame 1, a splicing platform 2, a film suction assembly 3, a film cutting assembly 5, and a film splicing assembly 6. The splicing platform 2 is vertically and flexibly disposed within the frame 1. The film suction assembly 3 includes a first film suction box 31 and a second film suction box 32, which are located on the upper and lower sides of the splicing platform 2, respectively. The first film suction box 31 can adsorb the tail end of the old film 10, and the second film suction box 32 can adsorb and fix the head end of the new film 20 onto the splicing platform 2. The splicing platform 2 can overlap the head end of the new film 20 below the tail end of the old film 10. The film cutting assembly 5 is located on one side of the splicing platform 2 and can cut the overlapping portion of the new film 20 and the old film 10 along the film width direction to form a new head end of the new film 20 and a new tail end of the old film 10, and the new head end and the new tail end are joined together to form a joint. The film bonding assembly 6 is vertically mounted on the frame 1 and located above the film bonding table 2. The film bonding assembly 6 can press against the film bonding table 2 to bond the mating joint.

[0055] like Figure 1 As shown, a first roller 30 and a second roller 40 are arranged vertically opposite each other on one side of the width direction of the frame 1. The old film 10 is wound on the first roller 30, and the new film 20 is wound on the second roller 40. The moving direction of the old film 10 is consistent with the width direction of the frame 1, and the film width direction of the old film 10 and the new film 20 is consistent with the length direction of the frame 1.

[0056] When the old film 10 is about to be unwound, the first roll 30 stops unwinding, and the head of the new film 20 is manually pulled to the upper surface of the film splicing platform 2. The film splicing mechanism then begins the film splicing operation.

[0057] First, the first suction box 31 adsorbs the tail end of the old film 10, and the second suction box 32 adsorbs and fixes the head end of the new film 20 onto the splicing platform 2. Then, the splicing platform 2 is raised to a certain height so that the head end of the new film 20 is stacked below the tail end of the old film 10. The film cutting assembly 5 cuts the overlapping portion of the new film 20 and the old film 10 along the film width direction to form a new head end of the new film 20 and a new tail end of the old film 10, and the new head end and the new tail end are joined together to form a joint. Finally, the splicing assembly 6 glues the joint, thereby connecting the new film 20 and the old film 10 into one unit.

[0058] The film cutting and splicing mechanism of this embodiment can cut and splice the overlapping portions of the new film 20 and the old film 10, thereby avoiding overlapping at the joint. This ensures that the thickness of the joint is consistent with that of the new film 20 and the old film 10, improving the flatness of the joint and preventing wrinkles, thus guaranteeing the quality of the joint and avoiding waste. Furthermore, since there is no thickness difference between the joint and the new film 20 and the old film 10, the coating head of the coating machine will not skip when the joint passes through it, which helps improve coating accuracy and quality.

[0059] like Figure 1 As shown, the film-attaching platform 2 can be raised and lowered within the frame 1 and has an initial position and a film-attaching position. When the film-attaching platform 2 is in the initial position, it is lower than the horizontal level of the old film 10, thus providing sufficient space between the film-attaching platform 2 and the old film 10 to facilitate the operator manually pulling the head of the new film 20 onto the film-attaching platform 2. Figure 3 As shown, when the film-attaching platform 2 is raised to the film-attaching position, the old film 10 and the new film 20 are stacked together to facilitate the cutting and bonding operations of the two.

[0060] Preferably, the film suction assembly 3 further includes a guide post 33 and a carrier plate 34. The guide post 33 is vertically disposed within the frame 1, and the carrier plate 34 is slidably disposed on the guide post 33. A second film suction box 32 is disposed on the carrier plate 34, and the film receiving platform 2 is disposed above the second film suction box 32. A first driving member 35 is disposed within the frame 1, and the output end of the first driving member 35 is connected to the carrier plate 34 and can drive the carrier plate 34 to rise, so that the new head on the film receiving platform 2 is stacked below the old tail. The stability of the lifting and lowering movement of the film receiving platform 2 is improved by setting the guide post 33.

[0061] In this embodiment, the first driving component 35 is a cylinder. Cylinders have a simple structure, high control precision, and are easy to install and maintain. Of course, the first driving component 35 can also be a linear motor or a hydraulic cylinder, etc., and no specific limitation is made here.

[0062] like Figures 1-3 As shown, both the first suction box 31 and the second suction box 32 use vacuum adsorption to adsorb the old film 10 and the new film 20 respectively, so that the old film 10 and the new film 20 are subjected to uniform adsorption force. This not only improves the stability of the new film 20 and the old film 10, but also avoids wrinkles in the overlapping part of the old film 10 and the new film 20, further improving the stability of the joint.

[0063] It should be noted that both the first suction box 31 and the second suction box 32 are provided with adsorption holes, and the film receiving platform 2 is provided with corresponding through holes. The through holes are connected one-to-one with the adsorption holes of the second suction box 32, so that the second suction box 32 can stably adsorb the head of the new film 20 onto the film receiving platform 2.

[0064] Specifically, the membrane splicing and dispensing mechanism also includes a fan 4 and branch pipes 41. One end of each branch pipe 41 can be connected to the first suction box 31 and the second suction box 32, respectively. The suction port of the fan 4 can selectively connect to the other end of one or more branch pipes 41 to open the corresponding first suction box 31 and second suction box 32. For example, when the second suction box 32 is connected to the suction port of the fan 4 through the corresponding branch pipe 41, the second suction box 32 is opened. At this time, the interior of the second suction box 32 is evacuated to a vacuum environment, thereby causing the suction holes of the second suction box 32 to generate suction force and adsorb the new membrane 20. When the second suction box 32 is disconnected from the suction port of the fan 4, the second suction box 32 is closed, thereby releasing the new membrane 20. The working principle of the first suction box 31 is the same as that of the second suction box 32, and will not be described again here.

[0065] like Figure 1 and Figure 3 As shown, the film suction assembly 3 also includes a third driving member 36, which is mounted on the platform 1. At least two first film suction boxes 31 are provided, and the output ends of the multiple third driving members 36 are respectively connected to the corresponding first film suction boxes 31. Part of the first film suction boxes 31 releases the old tail section to remove it, thereby forming a mating joint on the film receiving platform 2. The third driving member 36 drives the first film suction box 31 to descend to the position where the old film 10 is located to suction the old film 10. When the film receiving platform 2 rises to the film receiving position, the third film suction box 61 presses the old film 10 against the new film 20.

[0066] In this embodiment, the third driving component 36 is a cylinder. Cylinders have a simple structure, high control precision, and are easy to install and maintain. Of course, the third driving component 36 can also be a linear motor or a hydraulic cylinder, etc., and no specific limitation is made here.

[0067] like Figure 1 and Figure 2 As shown, the film cutting assembly 5 includes a second rodless cylinder 51 and a cutter 53. The second cylinder includes a second cylinder band and a second slider 52. The second cylinder band is disposed on the carrier plate 34 and extends along the film width direction, and the second slider 52 is slidably disposed on the second cylinder band. The film receiving stage 2 has a cutting channel. The cutter 53 is connected to the second slider 52 and can slide within the cutting channel to cut the overlapping portion of the new film 20 and the old film 10. After cutting, the cutter 53 can be reset and wait for the next cutting operation.

[0068] It should be noted that after the film cutting assembly 5 cuts the overlapping portion of the new film 20 and the old film 10, the tail of the old film 10 is cut to form a new tail and the removed old tail, and the head of the new film 20 is cut to form a new head and an old head. In this embodiment, there are two first suction boxes 31 and two second suction boxes 32. Both the two first suction boxes 31 and the two second suction boxes 32 are arranged along the width direction of the frame 1, and the cutting channel is located between the two second suction boxes 32. The two first suction boxes 31 respectively adsorb and press against the old tail and the new tail of the old film 10, and the two second suction boxes 32 respectively adsorb and press against the old head and the new head of the new film 20. After the cutting is completed, the first suction box 31, which adsorbs and presses against the old tail of the old film 10, is closed to release the old tail. Then, the third drive unit 36 ​​drives the first suction box 31 to rise, thereby disengaging from the old tail. The operator manually pulls the old tail off the film receiving platform 2, so that the new head of the new film 20 and the new tail of the old film 10 are both located on the upper end face and are joined to form a butt joint.

[0069] It should be noted that the film splicing assembly 6 uses adhesive tape to bond the joints together. In this embodiment, the adhesive tape is relatively thin, and the thickness of the new film 20 and the old film 10 is much greater than the thickness of the adhesive tape. Therefore, the adhesive tape will not have a significant impact on the thickness of the joint. It can be assumed that the thickness of the joint is consistent with that of the new film 20 and the old film 10, thereby avoiding the coating head from skipping during the coating process.

[0070] like Figure 1 and Figure 3 As shown, the film splicing assembly 6 includes a third suction box 61 and a second drive unit 62. The third suction box 61 can adsorb or release adhesive tape. The output shaft of the second drive unit 62 is connected to the third suction box 61 to drive the third suction box 61 to press against the film splicing platform 2 and adhere the adhesive tape to the joint. The third suction box 61 also uses vacuum adsorption to adsorb the adhesive tape, so that the tape is subjected to uniform adsorption force, which can prevent the tape from wrinkling and improve the bonding quality of the joint.

[0071] In this embodiment, the second driving component 62 is a cylinder. Cylinders have a simple structure, high control precision, and are easy to install and maintain. Of course, the second driving component 62 can also be a linear motor or a hydraulic cylinder, etc., and no specific limitation is made here. The third suction box 61 is connected to the suction port of the blower 4 through a corresponding branch pipe 41, so that the blower 4 can control the opening and closing of the third suction box 61. The third suction box 61 also has suction holes, and its working principle is the same as that of the first suction box 31 and the second suction box 32, which will not be described again here.

[0072] Furthermore, such as Figure 1 and Figure 2As shown, the film-attaching assembly 6 also includes a pulley block 64, a slide rail 63, and a push-pull rod 65. The pulley block 64 is fixedly mounted on the output shaft of the second drive member 62. The slide rail 63 is slidably engaged with the pulley block 64 and connected to the third film suction box 61. The slide rail 63 has a first position and a second position along the length of the frame 1. When the slide rail 63 slides to the second position, the third film suction box 61 is located outside the frame 1 and can absorb the adhesive tape. The push-pull rod 65 is connected to the slide rail 63, and one end of the push-pull rod 65 extends to the outside of the frame 1 and has a handle.

[0073] Specifically, the operator pulls the handle outward, causing the push-pull rod 65, slide rail 63, and third suction box 61 to move from the first position to the outside of the platform 1, until the third suction box 61 moves to the second position outside the platform 1. The blower 4 opens the third suction box 61 to allow it to absorb the adhesive tape (the tape can be manually applied to the suction holes of the third suction box 61 during operation). Then, the handle is pushed in the opposite direction, causing the push-pull rod 65, slide rail 63, and third suction box 61 to return to the first position, at which point the third suction box 61 is directly above the mating joint. The second drive unit 62 drives the third suction box 61 to descend and press against the film-jointing platform 2, thereby adhering the adhesive tape to the mating joint, completing the film-jointing operation of the new film 20 and the old film 10. It is understood that the length and extension direction of the adhesive tape are consistent with the mating joint to improve the adhesion effect of the tape. In addition, the reciprocating movement of the third film suction box 61 in the first and second positions is achieved manually, which is simple to operate and improves the flexibility of the film splicing assembly 6.

[0074] To improve the bonding strength and smoothness of the joint, the film cutting and splicing mechanism also includes a smoothing component 7, which can slide back and forth along the cutting direction of the film cutting component 5 to smooth the joint.

[0075] Specifically, such as Figure 1 and Figure 3 As shown, the smoothing component 7 includes a first rodless cylinder 71 and a smoothing block 73. The first rodless cylinder 71 includes a first cylinder band and a first slider 72. The first cylinder band is disposed on the frame 1 and extends along the cutting direction of the film cutting component 5. The first slider 72 is slidably disposed on the first cylinder band. The smoothing block 73 is connected to the first slider 72 and is located above the mating joint. The smoothing block 73 can slide synchronously with the first slider 72 to smooth the mating joint. Through the reciprocating smoothing action of the smoothing block 73 on the surface of the tape, not only can the adhesion effect of the tape be improved, resulting in a higher bonding strength of the mating joint, but the tape can also be pressed flat on the mating joint, improving the flatness of the mating joint.

[0076] For ease of understanding, the detailed membrane splicing process of the membrane splicing mechanism is as follows:

[0077] The first step is to pull the push-pull rod 65, slide rail 63 and third suction box 61 from the first position to the table 1 using the handle, and then apply the tape to the second position. Then push the handle in the opposite direction to reset the third suction box 61 to the first position.

[0078] The second step involves pulling the head of the new film 20 onto the film receiving platform 2, leveling it, and then opening the two second suction boxes 32 to adsorb and fix the head of the new film 20 onto the film receiving platform 2. The first driving component 35 drives the film receiving platform 2 to rise from its initial position to the film receiving position, so that the tail of the old film 10 overlaps with the head of the new film 20.

[0079] Third, when the old film 10 is about to be unwound, the first roll 30 stops unwinding. The third drive unit 36 ​​drives the first suction box 31 to descend to the film receiving position, and the first suction box 31 presses the old film 10 against the new film 20 and adsorbs the old film 10.

[0080] In the fourth step, the cutter 53 slides within the cutting channel to cut the overlapping portion of the new film 20 and the old film 10, and then the cutter 53 returns to its original position. The tail of the old film 10 is cut to form a new tail and the old tail is removed, and the head of the new film 20 is cut to form a new head and the old head is removed.

[0081] Fifth step, the first suction box 31, which adsorbs and presses against the old tail of the old film 10, is closed to release the old tail. Then, the third drive unit 36 ​​drives the first suction box 31 to rise, and the operator manually pulls the old tail off the film receiving platform 2, so that the new head of the new film 20 and the new tail of the old film 10 are connected to form a docking joint.

[0082] In the sixth step, the second drive unit 62 drives the third suction box 61 to press against the film receiving platform 2 and adheres the tape to the joint. At this time, the second drive unit 62 drives the first suction box 31, which releases the old tail, to descend again and press against the new head of the new film 20, thereby ensuring the stability and flatness of the joint.

[0083] In the seventh step, the second driving component 62 drives the third film suction box 61 to reset, thereby disengaging it from the film receiving platform 2. Simultaneously, the first film suction box 31, which presses against and adsorbs the new tail, rises under the drive of the third driving component 36, thereby avoiding interference with the smoothing component 7.

[0084] Step 8: The smoothing block 73 of the smoothing component 7 slides synchronously with the first slider 72 to smooth the joint and tape.

[0085] Step 9: Pull out the old head that was cut off from the new film 20, close and reset the first suction box 31 and the second suction box 32, return the film receiving platform 2 to the initial position, and start unwinding the second roll 40.

[0086] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film break and join mechanism, characterized by, The application relates to a film splicing device. The device comprises a rack (1) and a film receiving platform (2) which is arranged in the rack (1) in a lifting manner; a film suction assembly (3) which comprises a first film suction box (31) and a second film suction box (32), the first film suction box (31) and the second film suction box (32) are respectively arranged on the upper side and the lower side of the film receiving platform (2), the first film suction box (31) can suck the tail of an old film (10), the second film suction box (32) can suck and fix the head of a new film (20) on the film receiving platform (2), the film receiving platform (2) can stack the head of the new film (20) below the tail of the old film (10); a film cutting assembly (5) which is arranged on one side of the film receiving platform (2) and can cut the stacking position of the new film (20) and the old film (10) in the film width direction, so as to form a new head of the new film (20) and a new tail of the old film (10), and the new head and the new tail are connected to form a butt joint; and a film receiving assembly (6) which is arranged on the rack (1) in a lifting manner and is arranged above the film receiving platform (2), the film receiving assembly (6) is configured to be capable of pressing on the film receiving platform (2) to bond the butt joint; the film suction assembly (3) further comprises a third driving element (36), the third driving element (36) is arranged on the rack (1), the first film suction box (31) is provided with at least two, the output ends of a plurality of third driving elements (36) are respectively in driving connection with corresponding first film suction boxes (31); when the tail of the old film (10) is cut to form the new tail and the cut-off old tail, part of the first film suction boxes (31) releases the old tail, so that the old tail is removed, thereby forming a butt joint on the film receiving platform (2); the remaining first film suction boxes (31) suck and press the new tail; the film cutting and receiving mechanism further comprises: a smoothing assembly (7) which is configured to be capable of reciprocating sliding along the cutting direction of the film cutting assembly (5) to smooth the butt joint; the smoothing assembly (7) comprises: a first rodless cylinder (71) which comprises a first cylinder belt and a first sliding block (72), the first cylinder belt is arranged on the rack (1) and extends along the cutting direction of the film cutting assembly (5), and the first sliding block (72) is slidingly arranged on the first cylinder belt; and a smoothing block (73) which is connected with the first sliding block (72) and is arranged above the butt joint, the smoothing block (73) can synchronously slide with the first sliding block (72) to smooth the butt joint.

2. The film break and join mechanism according to claim 1, characterized by the film suction assembly (3) further comprises: a guide column (33) and a carrier plate (34), the guide column (33) is vertically arranged in the rack (1), and the carrier plate (34) is slidingly arranged on the guide column (33); the second film suction box (32) is arranged on the carrier plate (34), and the film receiving platform (2) is arranged above the second film suction box (32); and A first driving member (35) is arranged in the gantry (1), and an output end of the first driving member (35) is connected with the carrier plate (34) and can drive the carrier plate (34) to rise, so that the head of the new film (20) on the film receiving table (2) is overlapped below the tail of the old film (10).

3. The film break and join mechanism according to claim 2, characterized by The film breaking assembly (5) comprises: A second rodless cylinder (51) comprises a second cylinder belt and a second sliding block (52), the second cylinder belt is arranged on the carrier plate (34) and extends along the direction of the film width, and the second sliding block (52) is slidingly arranged on the second cylinder belt; and A cutter (53), the film receiving table (2) has a cutting channel, the cutter (53) is connected with the second sliding block (52) and can slide in the cutting channel to cut the overlapped part of the new film (20) and the old film (10).

4. The film break and join mechanism according to claim 1, wherein The film receiving assembly (6) comprises: A third film suction box (61) configured to be able to adsorb or release the adhesive tape; and A second driving member (62), an output shaft of the second driving member (62) is in transmission connection with the third film suction box (61) to drive the third film suction box (61) to press against the film receiving table (2) and stick the adhesive tape on the butt joint.

5. The film break and join mechanism according to claim 4, wherein The film receiving assembly (6) further comprises: A pulley block (64) fixedly arranged on the output shaft of the second driving member (62); and A slide rail (63) in sliding cooperation with the pulley block (64) and connected with the third film suction box (61), the slide rail (63) has a first position and a second position along the length direction of the gantry (1), when the slide rail (63) slides to the second position, the third film suction box (61) is located outside the gantry (1) and can adsorb the adhesive tape.

6. The film break and join mechanism according to claim 5, wherein The film receiving assembly (6) further comprises: A push-pull rod (65) connected with the slide rail (63), one end of the push-pull rod (65) extends to the outside of the gantry (1) and extends a handle.

7. The film break and join mechanism according to claim 4, wherein The film breaking and receiving mechanism further comprises: A fan (4) and branch pipelines (41), one end of each of the branch pipelines (41) can be in communication with the first film suction box (31), the second film suction box (32) and the third film suction box (61) respectively, and the suction port of the fan (4) can be selectively in communication with the other end of one or more of the branch pipelines (41) to open the corresponding first film suction box (31), the second film suction box (32) and the third film suction box (61).

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