Special ultrasonic welding system for high-precision single-face film

Abstract

The invention relates to the technical field of ultrasonic welding, in particular to an ultrasonic welding system special for a high-precision single-face film. The equipment comprises a placing plate, a welding mechanism is arranged on the upper end face of the placing plate, and a material pulling mechanism is arranged on the upper end face of the placing plate. The two rotating rollers in the material pulling mechanism are used for clamping stacked PE films and paper sheets, then the two rotating rollers rotate at a constant speed to pull the PE films and the paper sheets to synchronously move rightwards, constant-speed pulling of the PE films and the paper sheets is achieved, wrinkles on the PE films caused by uneven stress of the PE films are avoided, and the service life of the PE films and the paper sheets is prolonged. The connecting tightness between the PE film and the paper sheet after welding is improved, the PE film is adsorbed through the multiple adsorption openings, then the movable plate and the rubber strip move synchronously, the PE film and the paper sheet move synchronously while the PE film is tightly attached to the paper sheet, and therefore the right section of the stacked PE film and the right section of the paper sheet are suspended, and follow-up clamping of a rotating roller is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic welding, and in particular to a high-precision ultrasonic welding system dedicated to single-sided films. Background Art

[0002] Single-sided film refers to a layer of film material, one side of which has been specially treated or coated, while the other side remains in its original state. Single-sided film can be a film made of plastic, polymer, metal or other materials. Common types of single-sided film include polyethylene film (PE film). In the field of food packaging, PE film and paper are usually welded by ultrasonic welding machine to form composite paperboard. The processed composite paperboard has better moisture-proof sealing and enhances the strength of packaging. Ultrasonic welding is a welding method that uses high-frequency ultrasonic vibration energy to generate local high temperature on the contact surface of the workpiece to melt and combine the material surface.

[0003] In the existing welding process of PE film and paper, workers are required to stack the PE film and paper, and then weld the PE film and paper with an ultrasonic welding machine. During the welding process, workers are required to pull the PE film and paper to move slowly and at a uniform speed to prevent heat accumulation and material burning, control the melting depth of the welding area, and prevent thermal shrinkage and deformation. When workers manually pull the PE film, wrinkles are likely to appear on the PE film due to uneven force on the PE film, reducing the welding strength between the PE film and the paper. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a high-precision ultrasonic welding system dedicated to single-sided films, which can effectively solve the problems in the prior art that during the welding process, workers are required to pull the PE film and the paper sheet to move slowly and at a uniform speed to prevent heat accumulation and material burning, control the melting depth of the welding area, and prevent thermal shrinkage and deformation; when the workers manually pull the PE film, wrinkles may appear on the PE film due to uneven force on the PE film, thereby reducing the welding strength between the PE film and the paper sheet.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a high-precision single-sided film dedicated ultrasonic welding system, which is characterized by comprising: A placing plate is provided, and a welding mechanism for ultrasonically welding the PE film and the paper sheet is arranged on the upper end surface of the placing plate.

[0006] The upper end surface of the placement plate is provided with a material pulling mechanism located on the right side of the welding mechanism, and the material pulling mechanism includes a placement groove, and the inner walls on both sides of the placement groove are slidably provided with L-shaped plates through U-shaped bars, and a material pulling group is provided on the L-shaped plate.

[0007] A feeding mechanism is arranged on the upper end surface of the left end portion of the placement plate. The feeding mechanism comprises a sliding plate slidably arranged on the upper end surface of the placement plate. A feeding group for feeding PE film and paper sheets is arranged between the sliding plate and the placement plate.

[0008] The material pulling group includes two rotating rollers for pulling the welded PE film and paper sheet to move to the right.

[0009] Furthermore, the material pulling group includes a sliding block, and the vertical section of the L-shaped plate is provided with the sliding block for sliding up and down movement, and the two rotating rollers are respectively rotatably connected to the sliding block and the L-shaped plate.

[0010] Furthermore, the horizontal section of the L-shaped plate is provided with sliding grooves on the left and right sides, a horizontal bar is slidably arranged in the sliding groove, the left and right ends of the horizontal bar are fixedly connected to the placement plate through connecting blocks respectively, a trapezoidal block for pushing the sliding block to move upward is fixedly arranged on the upper end surface of the horizontal bar, a locking groove is provided on the sliding block, and a locking bar for locking the position of the sliding block is fixedly arranged on the upper end surface of the horizontal bar.

[0011] Furthermore, the feeding group includes a slide groove, the sliding plate is penetrated by a slide groove, a movable plate is slidably arranged in the slide groove, a protrusion for pushing the paper sheet to move is arranged on the movable plate, a guide rail is fixedly arranged on the lower end surface of the placement plate, and an electric slider fixedly connected to the movable plate is slidably arranged in the guide rail.

[0012] Furthermore, a limit group is provided on the sliding plate, and the limit group includes a T-shaped groove opened on the inner wall on the left side of the sliding groove, and two stop blocks distributed front and back are slidingly provided in the T-shaped groove, and an inclined surface is provided on the stop block, and the inclined surfaces of the two stop blocks are away from each other from left to right, and a spring is fixedly provided between the stop block and the inner wall of the T-shaped groove, a limit strip is fixedly provided on the right end surface of the moving plate, and a push strip is provided on the placement plate.

[0013] Furthermore, two rubber strips distributed frontally and rearwardly and fixedly connected to the moving plate are slidably arranged on the sliding plate, a plurality of suction ports are provided on the rubber strips, two moving grooves symmetrically distributed frontally and rearwardly are provided on the placement plate, a moving block is slidably arranged in the moving groove, an electric telescopic rod is arranged on the moving block, a sleeve is fixedly arranged at the telescopic end of the electric telescopic rod, a track is fixedly arranged on the upper end surface of the placement plate, a laser cutting head is slidably arranged on the track through a moving strip.

[0014] Furthermore, two front-to-back symmetrical clamping groups are arranged on the placement plate, and the clamping groups include a transmission shaft. The upper end surface of the placement plate is rotatably provided with two front-to-back symmetrically distributed transmission shafts through a fixed block, and magnets are fixedly arranged on the transmission shafts through connecting strips, and the weight of the magnets is greater than the magnetic force between the two magnets.

[0015] Furthermore, a transmission group is provided on the placement plate, and the transmission group includes a transmission plate, and a transmission plate is fixedly provided on the transmission shaft. Two U-shaped transmission bars are slidably provided on the upper end surface of the placement plate, and the openings of the transmission bars face the moving blocks on the corresponding sides. An arc-shaped pushing block is fixedly provided on the upper end surface of the transmission bars, and a vertical plate is fixedly provided on the right end surface of the sliding plate through a connecting plate, and a transmission groove is provided on the side of the vertical plate close to the fixed block.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a material pulling mechanism. After the stacked PE film and paper sheet are clamped by two rotating rollers, the two rotating rollers rotate at the same speed, and the two rotating rollers rotate in opposite directions. The PE film and the paper sheet are pulled to move right synchronously by the uniform rotation of the two rotating rollers, so that the PE film and the paper sheet are pulled uniformly, and wrinkles on the PE film caused by uneven force on the PE film are avoided, and the tightness of the connection between the PE film and the paper sheet after welding is improved. After the PE film is adsorbed by multiple adsorption ports, the moving plate and the rubber strip are moved synchronously, so that the PE film is closely attached to the paper sheet and moves synchronously with the paper sheet, so that the right section of the stacked PE film and the paper sheet is suspended, which is convenient for the subsequent clamping of the rotating rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of a feeding group, a pulling group and a limiting group according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a three-dimensional partial cross-section of an L-shaped plate according to an embodiment of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of a feeding group and a limiting group according to an embodiment of the present invention; Figure 5 It is a structural schematic diagram of a three-dimensional partial cross-section of a sliding plate according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the structure of the moving plate and the sliding plate in three-dimensional multiple states according to an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the embodiment of the present invention when two rotating rollers are away from each other; The numbers in the figure represent: 1. Placement plate; 2. Welding mechanism; 3. Material pulling mechanism; 31. Placement slot; 32. L-shaped plate; 33. Material pulling group; 331. Rotating roller; 332. Sliding block; 333. Sliding slot; 334. Horizontal bar; 335. Trapezoidal block; 336. Locking bar; 4. Material feeding mechanism; 41. Sliding plate; 42. Material feeding group; 421. Sliding slot; 422. Moving plate; 43. Limiting group; 431. Stop block ; 432, spring; 433, limit strip; 434, push strip; 435, T-slot; 44, rubber strip; 441, suction port; 442, moving block; 443, electric telescopic rod; 444, sleeve; 445, track; 446, laser cutting head; 45, clamping group; 451, transmission shaft; 452, magnet; 46, transmission group; 461, transmission plate; 462, transmission strip; 463, push block; 464, transmission groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below in conjunction with the embodiments. Example

[0021] See also Figure 1-Figure 7 The present invention provides a technical solution: a high-precision single-sided film dedicated ultrasonic welding system, comprising: A placing plate 1 is provided, and a welding mechanism 2 for ultrasonically welding the PE film and the paper sheet is arranged on the upper end surface of the placing plate 1 .

[0022] The upper end surface of the placement plate 1 is provided with a material pulling mechanism 3 located on the right side of the welding mechanism 2. The material pulling mechanism 3 includes a placement groove 31. The inner walls of the front and rear sides of the placement groove 31 are both slidably provided with L-shaped plates 32 through U-shaped bars, and a material pulling group 33 is provided on the L-shaped plate 32.

[0023] A feeding mechanism 4 is arranged on the upper end surface of the left end portion of the placement plate 1, and the feeding mechanism 4 includes a sliding plate 41 slidably arranged on the upper end surface of the placement plate 1, and a feeding group 42 for feeding PE film and paper sheets is arranged between the sliding plate 41 and the placement plate 1, and a support roller is rotatably arranged on the right section of the sliding plate 41.

[0024] The material pulling group 33 includes two rotating rollers 331 for pulling the welded PE film and paper sheet to move to the right.

[0025] The material pulling group 33 includes a sliding block 332. The vertical section of the L-shaped plate 32 is provided with a sliding block 332 for sliding up and down. The two rotating rollers 331 are rotatably connected with the sliding block 332 and the L-shaped plate 32 respectively. The opposite back sides of the two L-shaped plates 32 are provided with a transmission box, and the two rotating rollers 331 are connected to the transmission box through a rotating shaft.

[0026] The horizontal section of the L-shaped plate 32 is provided with sliding grooves 333 on the left and right sides, and a horizontal bar 334 is slidably arranged in the sliding groove 333. The left and right ends of the horizontal bar 334 are fixedly connected to the placement plate 1 through connecting blocks respectively, and the upper end surface of the horizontal bar 334 is fixedly provided with a trapezoidal block 335 for pushing the sliding block 332 to move upward. The sliding block 332 is provided with a locking groove, and the upper end surface of the horizontal bar 334 is fixedly provided with a locking bar 336 for locking the position of the sliding block 332.

[0027] The feeding group 42 includes a slide groove 421, a slide groove 421 is opened through the sliding plate 41, a moving plate 422 is slidably arranged in the slide groove 421, a protrusion for pushing the paper sheet to move is arranged on the moving plate 422, a guide rail is fixedly arranged on the lower end surface of the placement plate 1, and an electric slider fixedly connected to the moving plate 422 is slidably arranged in the guide rail.

[0028] A limit group 43 is provided on the sliding plate 41, and the limit group 43 includes a T-shaped slot 435 opened on the inner wall of the left side of the slide groove 421, and two stop blocks 431 distributed front and back are slidably provided in the T-shaped slot 435, and an inclined surface is provided on the stop block 431, and the inclined surfaces of the two stop blocks 431 are away from each other from left to right, and a spring 432 is fixedly provided between the stop block 431 and the inner wall of the T-shaped slot 435, a limit strip 433 is fixedly provided on the right end surface of the moving plate 422, and a push strip 434 is provided on the placement plate 1.

[0029] Two rubber strips 44 distributed front to back and fixedly connected to the moving plate 422 are slidably arranged on the sliding plate 41, a plurality of suction ports 441 are provided on the rubber strip 44, and the suction ports 441 are connected to an external air pump through a rubber tube, and two moving grooves symmetrically distributed front to back are provided on the placement plate 1, a moving block 442 is slidably arranged in the moving groove, an electric telescopic rod 443 is arranged on the moving block 442, a sleeve 444 is fixedly arranged at the telescopic end of the electric telescopic rod 443, a track 445 is fixedly arranged on the upper end surface of the placement plate 1, and a laser cutting head 446 is slidably arranged on the track 445 through a moving strip.

[0030] Two front-to-back symmetrical clamping groups 45 are arranged on the placement plate 1, and the clamping groups 45 include a transmission shaft 451. The upper end surface of the placement plate 1 is rotatably provided with two front-to-back symmetrically distributed transmission shafts 451 through a fixed block, and a magnet 452 is fixedly provided on the transmission shaft 451 through a connecting strip, and the weight of the magnet 452 is greater than the magnetic force between the two magnets 452, and rubber sheets are fixedly provided on the opposite surfaces of the two magnets 452 on the same fixed block.

[0031] A transmission group 46 is arranged on the placement plate 1, and the transmission group 46 includes a transmission plate 461. The transmission plate 461 is fixedly arranged on the transmission shaft 451. Two U-shaped transmission bars 462 are slidably arranged on the upper end surface of the placement plate 1, and the openings of the transmission bars 462 face the moving blocks 442 on the corresponding sides. An arc-shaped pushing block 463 is fixedly arranged on the upper end surface of the transmission bar 462. A vertical plate is fixedly arranged on the right end surface of the sliding plate 41 through a connecting plate, and a transmission groove 464 is opened on the side of the vertical plate close to the fixed block.

[0032] In the initial state, the electric telescopic rod 443 is in an extended state, the left end face of the sliding plate 41 is close to the fixed block, and the pushing block 463 is located on the left side of the fixed block. When working, the staff installs the rotating rod wrapped with PE film between the two sleeves 444, and makes the two magnets 452 on the same side clamp the PE film. The staff places a piece of paper on the sliding plate 41 and makes the paper between the two rubber strips 44. Then the two move synchronously to the right. While the moving block 442 moves, the telescopic end of the electric telescopic rod 443 contracts, thereby driving the rotating rod to move downward, and the movement of the PE film makes the two magnets clamping it The movable block 442 tilts to the right onto the sliding plate 41, and the left end of the PE film on the sliding plate 41 is pressed and limited by the gravity of the upper magnet 452 and the adsorption between the two magnets 452. Then, the movable block 442 continues to move to the right to drive the PE film to roll and adhere to the paper sheet. At the same time, the external air pump works to perform negative pressure adsorption on the PE film through the adsorption port 441, so that the PE film on the sliding plate 41 is close to the paper sheet. The movable block 442 drives the PE film to continue to move to the right through the electric telescopic rod 443 until the PE film completely covers the paper sheet. Then, the laser cutting head 446 works and moves from front to back to cut the PE film.

[0033] After the moving block 442 continues to move to the right until it contacts the transmission bar 462, the moving block 442 pushes the transmission bar 462 to move synchronously to the right, and the transmission bar 462 drives the pushing block 463 to move synchronously to the right. After the pushing block 463 moves to contact the transmission plate 461, the pushing block 463 pushes the transmission plate 461 to rotate the corresponding transmission shaft 451. The transmission shaft 451 drives the corresponding magnet 452 to rotate to a vertical state through the connecting bar. At this time, the magnet 452 close to the side of the sliding plate 41 is still in a horizontal state. Then the telescopic end of the electric telescopic rod 443 extends outward, and at the same time, the moving block 442 drives the electric telescopic rod 443 to move to the left and reset. After the moving block 442 moves to the left and contacts the transmission bar 462, the moving block 442 continues to push the transmission bar 462 to the left to move and reset.

[0034] In the initial state, the two stop blocks 431 are in contact with each other, and the limit bar 433 is close to the left end surfaces of the two stop blocks 431. When working, the electric slider drives the movable plate 422 to move synchronously to the right, and the movable bar pushes the stop block 431 and the sliding plate 41 to move synchronously to the right through the limit bar 433. The sliding plate 41 drives the vertical plate to move synchronously through the connecting plate. After the vertical plate moves to the right side of the transmission groove 464 and contacts the corresponding transmission plate 461, the transmission groove 464 and the transmission plate 461 cooperate with each other, so that the transmission shaft 451 drives the corresponding magnet 452 to rotate to a vertical state through the connecting bar, and clamps the PE film through the magnetic adsorption between the two magnets 452. Through the above method, the subsequent rolling feeding of the PE film is facilitated, and the clamping between the two magnets 452 provides tension for the feeding of the PE film.

[0035] After the two magnets 452 on the same side are rotated to a vertical state, the moving plate 422, the sliding plate 41 and the stop block 431 continue to move to the right. When the stop block 431 moves to contact with the push bar 434, the limit bar 433 continues to push the stop block 431 to move to the right. Through the cooperation between the inclined surface of the stop block 431 and the push bar 434, the two stop blocks 431 move away from each other in the front-to-back direction, and the spring 432 is compressed and deformed. Until the two stop blocks 431 move to disengage from the limit bar 433, the moving plate 422, the limit bar 433 and the rubber strip 44 continue to drive the paper sheet and the PE film to move and extend to the right. At this time, the right section of the paper sheet and the PE film is located on the right side of the sliding plate 41 and is suspended in the air (see FIG. 2 ). Figure 6 ), when the movable plate 422 moves to close to the right inner wall of the slide groove 421, it stops moving, completing the loading of the PE film and the paper sheet, avoiding the problem that the PE film and the paper sheet cannot be clamped by the two clamping rollers 331 on the sliding plate 41, resulting in the inability to perform subsequent welding.

[0036] In the initial state, the two L-shaped plates 32 are located at the right section of the placement groove 31, and the sliding block 332 is in contact with the upper horizontal section of the trapezoidal block 335 (see Figure 3), at this time, the two rotating rollers 331 are in a state of being away from each other. When working, the two L-shaped plates 32 move synchronously to the left, and the sliding block 332 and the L-shaped plate 32 move synchronously to the left until they contact the inclined surface of the trapezoidal block 335. The two rotating rollers 331 approach each other. When the sliding block 332 moves to contact the horizontal bar 334, the two clamping rollers complete the clamping of the stacked PE film and paper sheets (see Figure 7 ), and the position of the sliding block 332 is fixed by the locking bar 336, so that the axis position of the upper rotating roller 331 is fixed, thereby improving the stability of the PE film and paper sheet during the feeding process.

[0037] After completing the clamping of the stacked PE film and paper sheet, the welding mechanism 2 works to perform ultrasonic welding on the PE film and the paper sheet. At the same time, the transmission box works to make the two rotating rollers 331 rotate at the same speed and in opposite directions. The PE film and the paper sheet are pulled to the right through the rotation between the two rotating rollers 331, thereby achieving uniform speed pulling of the PE film and the paper sheet, avoiding wrinkles on the PE film caused by uneven force on the PE film, and improving the tightness of the connection between the PE film and the paper sheet after welding.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision single-sided film dedicated ultrasonic welding system, characterized in that: include: A placement plate (1), wherein the upper end surface of the placement plate (1) is provided with a welding mechanism (2) for ultrasonically welding the PE film and the paper sheet; The upper end surface of the placement plate (1) is provided with a material pulling mechanism (3) located on the right side of the welding mechanism (2), the material pulling mechanism (3) comprising a placement groove (31), the inner walls of the placement groove (31) on both the front and rear sides thereof being slidably provided with L-shaped plates (32) via U-shaped bars, and a material pulling group (33) being provided on the L-shaped plates (32); A feeding mechanism (4) is provided on the upper end surface of the left end portion of the placement plate (1), the feeding mechanism (4) comprising a sliding plate (41) slidably arranged on the upper end surface of the placement plate (1), and a feeding group (42) for feeding PE film and paper sheets is provided between the sliding plate (41) and the placement plate (1); The material pulling group (33) comprises two rotating rollers (331) for pulling the welded PE film and the paper sheet to move to the right.

2. A high-precision single-sided film dedicated ultrasonic welding system according to claim 1, characterized in that: The material pulling group (33) comprises a sliding block (332), a vertical section of the L-shaped plate (32) is provided with the sliding block (332) for sliding up and down movement, and two rotating rollers (331) are respectively rotatably connected to the sliding block (332) and the L-shaped plate (32).

3. A high-precision single-sided film dedicated ultrasonic welding system according to claim 2, characterized in that: The horizontal section of the L-shaped plate (32) is provided with sliding grooves (333) running through the left and right sides, a horizontal bar (334) is slidably arranged in the sliding groove (333), the left and right ends of the horizontal bar (334) are respectively fixedly connected to the placement plate (1) via connecting blocks, a trapezoidal block (335) for pushing the sliding block (332) to move upward is fixedly arranged on the upper end surface of the horizontal bar (334), a locking groove is provided on the sliding block (332), and a locking bar (336) for locking the position of the sliding block (332) is fixedly arranged on the upper end surface of the horizontal bar (334).

4. A high-precision single-sided film dedicated ultrasonic welding system according to claim 1, characterized in that: The feeding group (42) comprises a slide groove (421), the slide plate (41) is provided with a slide groove (421) extending therethrough, a movable plate (422) is slidably arranged in the slide groove (421), a protrusion for pushing the paper sheet to move is arranged on the movable plate (422), a guide rail is fixedly arranged on the lower end surface of the placement plate (1), and an electric slider fixedly connected to the movable plate (422) is slidably arranged in the guide rail.

5. A high-precision single-sided film dedicated ultrasonic welding system according to claim 4, characterized in that: A limit group (43) is provided on the sliding plate (41), and the limit group (43) comprises a T-shaped groove (435) provided on the inner wall on the left side of the sliding groove (421). Two stop blocks (431) are slidably provided in the T-shaped groove (435) and are distributed front and rear. The stop blocks (431) are provided with inclined surfaces, and the inclined surfaces of the two stop blocks (431) are away from each other from left to right. A spring (432) is fixedly provided between the stop blocks (431) and the inner wall of the T-shaped groove (435). A limit strip (433) is fixedly provided on the right end surface of the moving plate (422), and a push strip (434) is provided on the placement plate (1).

6. A high-precision single-sided film dedicated ultrasonic welding system according to claim 4, characterized in that: The sliding plate (41) is provided with two rubber strips (44) which are distributed front and back and fixedly connected to the moving plate (422) for sliding movement, and the rubber strips (44) are provided with a plurality of suction ports (441). The placement plate (1) is provided with two moving grooves which are symmetrically distributed front and back, and a moving block (442) is slidably provided in the moving groove, and an electric telescopic rod (443) is provided on the moving block (442), and a sleeve (444) is fixedly provided at the telescopic end of the electric telescopic rod (443). A track (445) is fixedly provided on the upper end surface of the placement plate (1), and a laser cutting head (446) is slidably provided on the track (445) via a moving strip.

7. A high-precision single-sided film dedicated ultrasonic welding system according to claim 1, characterized in that: The placement plate (1) is provided with two front-to-back symmetrical clamping groups (45), the clamping groups (45) comprising transmission shafts (451), the upper end surface of the placement plate (1) is rotatably provided with two front-to-back symmetrically distributed transmission shafts (451) via a fixing block, magnets (452) are fixedly provided on the transmission shafts (451) via a connecting strip, and the weight of the magnets (452) is greater than the magnetic force between the two magnets (452).

8. A high-precision single-sided film dedicated ultrasonic welding system according to claim 7, characterized in that: The placement plate (1) is provided with a transmission group (46), the transmission group (46) comprising a transmission plate (461), the transmission shaft (451) being fixedly provided with the transmission plate (461), the upper end surface of the placement plate (1) being slidably provided with two U-shaped transmission bars (462), the openings of the transmission bars (462) facing the moving blocks (442) on the corresponding sides, the upper end surface of the transmission bars (462) being fixedly provided with an arc-shaped pushing block (463), the right end surface of the sliding plate (41) being fixedly provided with a vertical plate via a connecting plate, the vertical plate being provided with a transmission groove (464) on a side close to the fixed block.

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