A marking device for sheet food packaging

Abstract

The utility model aims at providing a kind of sheet food packaging marking device for reducing marking position deviation, good compatibility, can adjust marking position according to packaging type.The utility model includes base, setting on the upper portion of base for the packaging coiled material sending-out unwinding module, the heat sealing module of fixed connection in the lower portion of base, the unwinding module is located above the heat sealing module, the middle part of the unwinding module is provided with laser marking module for packaging bag date marking, the base is detachably installed with the forming plate for packaging paper shaping, the shaping plate is set between the heat sealing module and the unwinding module.The utility model is applied to the technical field of packaging marking device.

Description

Technical Field

[0001] This utility model relates to the technical field of packaging marking devices, and in particular to a marking device for sheet food packaging. Background Technology

[0002] Laser marking uses a high-density, high-energy laser beam to cause physical or chemical changes on the product surface, leaving an indelible mark. This mark is not easily wiped or worn away, ensuring the long-lasting legibility of the production date. Laser marking machines can achieve very fine markings, clearly printing production dates even on small products, guaranteeing the accuracy and readability of the information. Using laser marking to indicate production dates on product packaging primarily meets the food industry's needs for product traceability and quality control.

[0003] For sheet-shaped foods such as milk tablets and nutritional tablets, before packaging and shipping, they need to be individually packaged by a packaging machine and heat-sealed on the packaging machine. The surface of the packaging bag may have curvature or wrinkles. The unevenness of the packaging bag surface can cause the laser marking machine to easily deform, shift, twist, or miss during marking, resulting in defective products with poor marking. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a sheet food packaging marking device that reduces marking position offset, has good compatibility, and can adjust the marking position according to the type of packaging.

[0005] The technical solution adopted by this utility model is as follows: This utility model includes a base, an unwinding module disposed on the upper part of the base for feeding out the packaging roll, a heat sealing module fixedly connected to the lower part of the base, the unwinding module being located above the heat sealing module, a laser marking module for coding the date on the packaging bag being disposed in the middle of the unwinding module, and a forming plate for shaping the packaging paper being detachably installed on the base, the forming plate being disposed between the heat sealing module and the unwinding module.

[0006] Furthermore, the unwinding module includes an unwinding frame fixedly connected to the base, a paper-holding shaft pivotally connected to the upper part of the unwinding frame, a material-pulling component disposed in the middle of the unwinding frame for pulling out the roll material, and a displacement detection rod fixedly connected to the lower part of the unwinding frame for detecting the unwinding status. A sliding groove is provided in the middle of the unwinding frame for the laser marking module to slide and cooperate. Two mounting plates are detachably connected to the unwinding frame, and a film-adjusting shaft is pivotally connected between the two mounting plates. At least two roll material positioning sleeves are fixedly connected to the middle of the film-adjusting shaft.

[0007] Furthermore, the material pulling component includes two positioning plates fixedly connected to the unwinding frame, a material pulling drive device fixedly connected to one of the positioning plates, a material pulling shaft fixedly connected to the movable end of the material pulling drive device, and a roller pivotally connected between the two positioning plates. The end of the material pulling shaft is pivotally connected to the corresponding mounting plate. The material pulling shaft is fixedly connected to at least one traction wheel, and each traction wheel is fixedly connected to a traction sleeve for pulling the roll material.

[0008] Furthermore, a displacement monitoring plate is fixedly connected to the lower part of each positioning plate, and a photoelectric sensor is fixedly connected to the lower part of each displacement monitoring plate. Each displacement monitoring plate forms a displacement groove, and a signal rod for winding the roll material is provided between two displacement monitoring plates. The end of the signal rod slides in cooperation with the corresponding displacement groove, and the signal rod cooperates with the photoelectric sensor for detection.

[0009] Furthermore, the heat sealing module includes a vertical sealing component, a pouch-pulling component, and a sealing and cutting component arranged sequentially from top to bottom; The bag-pulling assembly includes a bag-pulling fixing seat, a bag-pulling driving device, a driving wheel, and a clamping wheel. The bag-pulling fixing seat is pivotally connected to the base. The bag-pulling driving device is fixedly connected to the bag-pulling fixing seat. The driving wheel is fixedly connected to the movable end of the bag-pulling driving device. The clamping wheel is pivotally connected to the base. The clamping wheel and the driving wheel are closely fitted together to pull the packaging bag.

[0010] Furthermore, the longitudinal sealing assembly includes a longitudinal sealing seat fixedly connected to the base, a first sealing plate disposed on one side of the longitudinal sealing seat, a longitudinal sealing connecting seat fixedly connected to the other end of the longitudinal sealing seat, a first sealing device disposed on the longitudinal sealing connecting seat, a sliding frame guided and connected to the longitudinal sealing connecting seat, and a second sealing plate fixedly connected to the sliding frame. Both the first sealing plate and the second sealing plate form a receiving cavity for material to fall into. A venting needle for puncturing the packaging is disposed on one side of the sliding frame.

[0011] Furthermore, the sealing and cutting assembly includes a mounting frame fixedly connected to the base, two sets of horizontal sealing plates slidably connected to the mounting frame, two sets of horizontal sealing drive devices correspondingly disposed on corresponding sides of the mounting frame, and a cutting blade disposed between the two sets of horizontal sealing plates. Each horizontal sealing plate is fixedly connected to the movable end of the corresponding horizontal sealing drive device. Two cutting drive devices are fixedly connected to each set of horizontal sealing plates, and the end of each cutting drive device is fixedly connected to one end of the corresponding cutting blade.

[0012] Furthermore, the laser marking module includes a mounting base, a laser driving device, a connecting plate, and a laser generating device. The mounting base is fixedly connected to the unwinding module, the laser driving device is fixedly connected to the mounting base, the connecting plate is slidably engaged with the unwinding module, the movable end of the laser driving device is fixedly connected to the connecting plate, and the laser generating device is guided and connected to the connecting plate.

[0013] Furthermore, the connecting plate has a slider that slides in cooperation with the unwinding module, a connecting block that is fixedly connected to the laser driving device is formed on one side of the slider, and a guide strip that guides the laser generating device.

[0014] Furthermore, the forming plate includes two extension frames fixedly connected to the base, an adjustment plate detachably connected to the corresponding extension frame, and a hanging plate fixedly connected to the two adjustment plates. The extension frames are formed with slots for adjusting the position of the adjustment plates.

[0015] The beneficial effects of this utility model are: by using a laser marking module that can be adjusted in front and back positions in the middle of the unwinding module, the production date is directly laser-marked on the surface of the packaging plastic roll after it has been flattened and deformed. This effectively avoids the deformation, offset, twisting or missing marking caused by unevenness on the surface of the packaging bag after the sheet material is packaged. The marking is clear, the detection is convenient, the efficiency of laser marking is improved, and the yield of defective products is reduced. Attached Figure Description

[0016] Figure 1 This is a first structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the second structure of this utility model; Figure 3 This is a first structural schematic diagram of the unwinding module of this utility model; Figure 4 yes Figure 3 A magnified view of part A in the middle; Figure 5 This is a schematic diagram of the second structure of the unwinding module of this utility model; Figure 6 This is a schematic diagram of the structure of the unwinding module and the laser marking module of this utility model; Figure 7 yes Figure 6 A magnified view of part B in the middle section; Figure 8 This is an exploded view of the laser marking module of this utility model; Figure 9 This is a schematic diagram of the structure of the heat sealing module of this utility model; Figure 10This is a structural schematic diagram of the longitudinal sealing assembly of this utility model; Figure 11 This is a structural schematic diagram of the pull bag assembly of this utility model; Figure 12 This is a structural schematic diagram of the sealing and cutting component of this utility model; Figure 13 This is an exploded view of the molded plate of this utility model.

[0017] In the picture: 1. Base; 2. Unwinding module; 21. Unwinding frame; 22. Paper support shaft; 23. Material pulling component; 231. Positioning plate; 232. Material pulling drive device; 233. Material pulling shaft; 234. Roller; 235. Traction wheel; 236. Traction sleeve; 237. Displacement monitoring plate; 238. Photoelectric sensor; 239. Signal rod; 24. Displacement detection rod; 25. Sliding groove; 26. Mounting plate; 27. Film adjusting shaft; 28. Roll positioning sleeve; 3. Heat sealing module; 31. Longitudinal sealing assembly; 311. Longitudinal sealing seat; 312. First pressure sealing plate; 313. Longitudinal sealing connecting seat; 314. First pressure sealing device; 315. Sliding frame; 316. Second pressure sealing plate; 317. Receiving cavity; 318. Exhaust needle; 32. Pull-out bag assembly; 321. Pull-out bag fixing base; 322. Pull-out bag driving device; 323. Drive wheel; 324. Clamping wheel; 33. Sealing and cutting assembly; 331. Mounting frame; 332. Horizontal sealing plate; 333. Horizontal sealing drive device; 334. Cutting blade; 335. Cutting drive device; 4. Laser marking module; 41. Mounting base; 42. Laser driver; 43. Connecting plate; 44. Laser generator; 45. Slider; 46. Connecting block; 47. Guide bar; 5. Forming plate; 51. Extension frame; 52. Adjustment plate; 53. Hanging plate; 54. Grooving. Detailed Implementation

[0018] like Figures 1 to 2 As shown, in this embodiment, the present invention includes a base 1, an unwinding module 2 disposed on the upper part of the base 1 for feeding out the packaging roll, a heat sealing module 3 fixedly connected to the lower part of the base 1, the unwinding module 2 being located above the heat sealing module 3, a laser marking module 4 for coding the date on the packaging bag being disposed in the middle of the unwinding module 2, and a forming plate 5 for shaping the packaging paper being detachably installed on the base 1, the forming plate being disposed between the heat sealing module 3 and the unwinding module 2.

[0019] Specifically, the unwinding module 2 is used to place the packaging plastic roll. After the packaging roll is flattened in the unwinding module 2, it changes shape by the forming plate 5. In the unwinding module 2, it enters the heat sealing module 3 to receive the falling sheet material. The heat sealing module 3 is used to seal the roll to form a sealed space to encapsulate sheet food or nutritional products. At the lower end of the heat sealing module 3, the connected plastic packaging is separated by the cutting blade 334 to achieve integrated sheet material encapsulation. The laser marking module is installed in the middle of the unwinding module 2 and can be adjusted back and forth according to the packaging marking position.

[0020] The laser marking module, which is set in the middle of the unwinding module 2 and can be adjusted in front and back positions, directly marks the production date on the surface of the packaging plastic roll after it is flattened and deformed. This effectively avoids the deformation, displacement, twisting or omission caused by unevenness on the surface of the packaging bag after the sheet material is packaged. The marking is clear, the detection is convenient, the efficiency of laser marking is improved, and the output rate of defective products is reduced.

[0021] like Figures 2 to 6 As shown, in this embodiment, the unwinding module 2 includes an unwinding frame 21 fixedly connected to the base 1, a paper-holding shaft 22 pivotally connected to the upper part of the unwinding frame 21, a material-pulling component 23 disposed in the middle of the unwinding frame 21 for pulling out the roll material, and a displacement detection rod 24 fixedly connected to the lower part of the unwinding frame 21 for detecting the unwinding status. The middle part of the unwinding frame 21 is provided with a sliding groove 25 for the laser marking module 4 to slide and cooperate. The unwinding frame 21 is detachably connected to two mounting plates 26, and a film-adjusting shaft 27 is pivotally connected between the two mounting plates 26. At least two roll material positioning sleeves 28 are fixedly connected to the middle part of the film-adjusting shaft 27.

[0022] Specifically, the two ends of the paper-holding shaft 22 are pivotally connected to the unwinding frame 21. Two paper-stopping wheels for clamping the paper tube are detachably installed in the middle of the paper-holding shaft by screws. The end of the displacement detection rod 24 is equipped with a photoelectric sensor 238 for detecting the positioning color blocks set at intervals on the packaging roll. When the displacement detection rod detects the positioning color block, the packaging roll has moved a distance equal to one plastic sealing packaging distance. The feedback control stops the pulling component 23, causing the roll to stop feeding.

[0023] In this embodiment, the material pulling component 23 includes two positioning plates 231 fixedly connected to the unwinding frame 21, a material pulling drive device 232 fixedly connected to one of the positioning plates 231, a material pulling shaft 233 fixedly connected to the movable end of the material pulling drive device 232, and a roller 234 pivotally connected between the two positioning plates 231. The end of the material pulling shaft 233 is pivotally connected to the corresponding positioning plate 231. At least one traction wheel 235 is fixedly connected to the material pulling shaft 233, and each traction wheel 235 is fixedly connected to a traction sleeve 236 for pulling the roll material.

[0024] Specifically, the material pulling drive device 232 is a rotary motor. The material pulling drive device 232 drives the material pulling shaft 233 to rotate. The traction sleeve 236 fixed on the material pulling shaft 233 rubs against the roll material, providing tensile force to the roll material and causing the roll material to be continuously released. When the roll material is pulled, the tension drives the signal rod 239 to move upward. The test photoelectric sensor 238 detects the upward displacement of the signal rod 239, generates an electrical signal feedback, and controls the material pulling drive device 232 to reduce the rotation speed. When the two photoelectric sensors 238 simultaneously emit signals in conjunction with the displacement monitoring rod, the material pulling drive device 232 stops.

[0025] In this embodiment, a displacement monitoring plate 237 is fixedly connected to the lower part of each positioning plate 231, and a photoelectric sensor 238 is fixedly connected to the lower part of each displacement monitoring plate 237. Each displacement monitoring plate 237 forms a displacement groove, and a signal rod 239 for winding the roll material is provided between two displacement monitoring plates 237. The end of the signal rod 239 slides in cooperation with the corresponding displacement groove, and the signal rod 239 cooperates with the photoelectric sensor 238 for detection.

[0026] Specifically, during the heat sealing process, the signal rod 239 contacts the photoelectric sensor 238. At this time, the photoelectric sensor 238 does not emit an electrical signal. When the roll material is pulled, the pulling force drives the signal rod 239 to move upward. The photoelectric sensor 238 detects the upward displacement of the signal rod 239, generates an electrical signal feedback, and controls the material pulling drive device 232 to reduce the rotation speed.

[0027] like Figures 9 to 12 As shown, in this embodiment, the heat sealing module 3 includes a vertical sealing component 31, a pouch assembly 32, and a sealing and cutting component 33 arranged sequentially from top to bottom; The bag-pulling assembly 32 includes a bag-pulling fixing seat 321, a bag-pulling driving device 322, a driving wheel 323, and a clamping wheel 324. The bag-pulling fixing seat 321 is pivotally connected to the base 1. The bag-pulling driving device 322 is fixedly connected to the bag-pulling fixing seat 321. The driving wheel 323 is fixedly connected to the movable end of the bag-pulling driving device 322. The clamping wheel 324 is pivotally connected to the base 1. The clamping wheel 324 and the driving wheel 323 are closely fitted together to pull the packaging bag.

[0028] Specifically, both the drive wheel 323 and the clamping wheel 324 are made of rubber, which pulls the packaging bag downwards by friction. The bag pulling drive device 322 is a rotary motor.

[0029] In this embodiment, the longitudinal sealing assembly 31 includes a longitudinal sealing seat 311 fixedly connected to the base 1, a first sealing plate 312 disposed on one side of the longitudinal sealing seat 311, a longitudinal sealing connecting seat 313 fixedly connected to the other end of the longitudinal sealing seat 311, a first sealing device 314 disposed on the longitudinal sealing connecting seat 313, a sliding frame 315 guided and connected to the longitudinal sealing connecting seat 313, and a second sealing plate 316 fixedly connected to the sliding frame 315. The first sealing plate 312 and the second sealing plate 316 both form a receiving cavity 317 for material to fall into. A venting needle 318 for puncturing the packaging is disposed on one side of the sliding frame 315.

[0030] Specifically, the accommodating cavity 317 provided between the first sealing plate 312 and the second sealing plate 316 ensures that the sheet material falling from top to bottom does not affect the sealing of the packaging bag. The longitudinal sealing seat 311 is provided with a waist-shaped groove, and the sliding seat adjusts its front and rear displacement through the waist-shaped groove to adapt to the sealing of packaging bags of different thicknesses. The first sealing device is a push cylinder, and the first sealing plate and the second sealing plate are heat sealing plates.

[0031] In this embodiment, the sealing and cutting assembly 33 includes a mounting frame 331 fixedly connected to the base 1, two sets of horizontal sealing plates 332 slidably connected to the mounting frame 331, two sets of horizontal sealing drive devices 333 correspondingly disposed on corresponding sides of the mounting frame 331, and a cutting blade 334 disposed between the two sets of horizontal sealing plates 332. Each horizontal sealing plate 332 is fixedly connected to the movable end of the corresponding horizontal sealing drive device 333. Two cutting drive devices 335 are fixedly connected to each set of horizontal sealing plates 332. The end of each cutting drive device 335 is fixedly connected to one end of the corresponding cutting blade 334.

[0032] Specifically, the horizontal sealing drive device 333 and the cutting drive device 335 are push cylinders. Two slide rods are provided in the mounting frame 331. Two sets of horizontal sealing plates 332 cooperate with the slide rods. After the packaging is in place, the two sets of horizontal sealing drive devices 333 are pushed out, and the two horizontal sealing plates 332 perform a pressing and sealing operation on the packaging bag. After the pressing and sealing is completed, the cutting drive device 335 is pushed out, and the cutting blade 334 cuts and separates the packaging.

[0033] like Figures 7 to 8 As shown, in this embodiment, the laser marking module 4 includes a mounting base 41, a laser driving device 42, a connecting plate 43, and a laser generating device 44. The mounting base 41 is fixedly connected to the unwinding module 2, the laser driving device 42 is fixedly connected to the mounting base 41, the connecting plate 43 is slidably engaged with the unwinding module 2, the movable end of the laser driving device 42 is fixedly connected to the connecting plate 43, and the laser generating device 44 is guided and connected to the connecting plate 43.

[0034] Specifically, the laser driving device 42 is a telescopic cylinder used to adjust the front and rear positions of the laser generating device 44 to adapt to laser marking of packaging bags of different sizes and models. The laser generating device 44 can be a CO2 laser marking machine, a fiber laser marking machine, or an ultraviolet laser marking machine.

[0035] In this embodiment, the connecting plate 43 has a slider 45 that slides with the unwinding module 2, a connecting block 46 that is fixedly connected to the laser driving device 42 is formed on one side of the slider 45, and a guide strip 47 that guides the laser generating device 44.

[0036] Specifically, the guide bar 47 simplifies the installation and disassembly of the laser generator 44, improving daily maintenance efficiency.

[0037] like Figure 13 As shown, in this embodiment, the forming plate 5 includes two extension frames 51 fixedly connected to the base 1, an adjustment plate 52 detachably connected to the corresponding extension frame 51, and a hanging plate 53 fixedly connected to the two adjustment plates 52. The extension frame 51 is formed with a slot 54 for adjusting the position of the adjustment plate 52.

[0038] Specifically, the adjustment plate 52 can be adjusted in front and behind according to the slot 54 to improve compatibility.

[0039] The working principle of this utility model: The roll material is placed on the paper holder 22, and the roll material is wound around the pulling component 23, the film adjusting shaft 27 and the roller 234 in sequence. After the packaging roll material is flattened in the unwinding module 2, it changes shape by the forming plate 5. In the unwinding module 2, it enters the heat sealing module 3 to receive the falling sheet material. The bag pulling assembly 32 pulls the packaging bag downward by friction. The longitudinal sealing assembly 31 heat seals the sides and bottom of the roll material, and the transverse sealing assembly presses the top of the roll material to achieve the sealing and encapsulation of the sheet material. After the pressing and sealing is completed, the cutting drive device 335 pushes out, and the cutting blade 334 cuts and separates the packaging.

[0040] Although the embodiments of this utility model are described with reference to actual solutions, they do not constitute a limitation on the meaning of this utility model. For those skilled in the art, modifications to the implementation schemes and combinations with other schemes based on this specification are obvious.

Claims

1. A labeling device for sheet-like food packaging, characterized in that: Includes a base (1), an unwinding module (2) disposed on the upper part of the base (1) for feeding out the packaging roll, a heat sealing module (3) fixedly connected to the lower part of the base (1), the unwinding module (2) being located above the heat sealing module (3), a laser marking module (4) for coding the date on the packaging bag being disposed in the middle of the unwinding module (2), and a forming plate (5) for shaping the packaging paper being detachably installed on the base (1), the forming plate being disposed between the heat sealing module (3) and the unwinding module (2).

2. The labeling device for sheet food packaging according to claim 1, characterized in that: The unwinding module (2) includes an unwinding frame (21) fixedly connected to the base (1), a paper-holding shaft (22) pivotally connected to the upper part of the unwinding frame (21), a material-pulling component (23) set in the middle of the unwinding frame (21) for pulling out the roll material, and a displacement detection rod (24) fixedly connected to the lower part of the unwinding frame (21) for detecting the unwinding situation. The unwinding frame (21) has a sliding groove (25) in the middle for sliding cooperation with the laser marking module (4). The unwinding frame (21) is detachably connected to two mounting plates (26). A film-adjusting shaft (27) is pivotally connected between the two mounting plates (26). At least two roll material positioning sleeves (28) are fixedly connected in the middle of the film-adjusting shaft (27).

3. The labeling device for sheet food packaging according to claim 2, characterized in that: The material pulling component (23) includes two positioning plates (231) fixedly connected to the unwinding frame (21), a material pulling drive device (232) fixedly connected to one of the positioning plates (231), a material pulling shaft (233) fixedly connected to the movable end of the material pulling drive device (232), and a roller (234) pivotally connected between the two positioning plates (231). The end of the material pulling shaft (233) is pivotally connected to the corresponding positioning plate (231). The material pulling shaft (233) is fixedly connected to at least one traction wheel (235), and each traction wheel (235) is fixedly connected to a traction sleeve (236) for pulling the roll material.

4. The labeling device for sheet food packaging according to claim 3, characterized in that: A displacement monitoring plate (237) is fixedly connected to the bottom of each positioning plate (231). A photoelectric sensor (238) is fixedly connected to the lower part of one of the displacement monitoring plates (237). Each displacement monitoring plate (237) forms a displacement groove. A signal rod (239) for winding the roll material is provided between two displacement monitoring plates (237). The end of the signal rod (239) slides in cooperation with the corresponding displacement groove. The signal rod (239) cooperates with the photoelectric sensor (238) for detection.

5. The labeling device for sheet food packaging according to claim 1, characterized in that: The heat sealing module (3) includes a vertical sealing component (31), a pouch assembly (32), and a sealing and cutting component (33) arranged sequentially from top to bottom. The bag-pulling assembly (32) includes a bag-pulling base (321), a bag-pulling drive device (322), a drive wheel (323), and a clamping wheel (324). The bag-pulling base (321) is pivotally connected to the base (1). The bag-pulling drive device (322) is fixedly connected to the bag-pulling base (321). The drive wheel (323) is fixedly connected to the movable end of the bag-pulling drive device (322). The clamping wheel (324) is pivotally connected to the base (1). The clamping wheel (324) and the drive wheel (323) work together to pull the bag.

6. The labeling device for sheet food packaging according to claim 5, characterized in that: The longitudinal sealing assembly (31) includes a longitudinal sealing seat (311) fixedly connected to the base (1), a first sealing plate (312) disposed on one side of the longitudinal sealing seat (311), a longitudinal sealing connecting seat (313) fixedly connected to the other end of the longitudinal sealing seat (311), a first sealing device (314) disposed on the longitudinal sealing connecting seat (313), a sliding frame (315) guided and connected to the longitudinal sealing connecting seat (313), and a second sealing plate (316) fixedly connected to the sliding frame (315). The first sealing plate (312) and the second sealing plate (316) are both formed with a receiving cavity (317) for material to fall into. A venting needle (318) for puncturing the packaging is provided on one side of the sliding frame (315).

7. A labeling device for sheet food packaging according to claim 5, characterized in that: The sealing and cutting assembly (33) includes a mounting frame (331) fixedly connected to the base (1), two sets of horizontal sealing plates (332) slidably connected to the mounting frame (331), two sets of horizontal sealing drive devices (333) correspondingly arranged on the corresponding side of the mounting frame (331), and a cutting blade (334) arranged between the two sets of horizontal sealing plates (332). Each horizontal sealing plate (332) is fixedly connected to the movable end of the corresponding horizontal sealing drive device (333). Two cutting drive devices (335) are fixedly connected to one set of horizontal sealing plates (332). The end of each cutting drive device (335) is fixedly connected to one end of the corresponding cutting blade (334).

8. The labeling device for sheet food packaging according to claim 1, characterized in that: The laser marking module (4) includes a mounting base (41), a laser driving device (42), a connecting plate (43), and a laser generating device (44). The mounting base (41) is fixedly connected to the unwinding module (2), the laser driving device (42) is fixedly connected to the mounting base (41), the connecting plate (43) is slidably engaged with the unwinding module (2), the movable end of the laser driving device (42) is fixedly connected to the connecting plate (43), and the laser generating device (44) is guided and connected to the connecting plate (43).

9. A labeling device for sheet food packaging according to claim 8, characterized in that: The connecting plate (43) has a slider (45) that slides with the unwinding module (2). A connecting block (46) that is fixedly connected to the laser driving device (42) is formed on one side of the slider (45). The connecting plate (43) has a guide strip (47) that guides the laser generating device (44).

10. A labeling device for sheet food packaging according to claim 1, characterized in that: The forming plate (5) includes two extension frames (51) fixedly connected to the base (1), an adjustment plate (52) detachably connected to the corresponding extension frame (51), and a hanging plate (53) fixedly connected to the two adjustment plates (52). The extension frame (51) has a slot (54) for adjusting the position of the adjustment plate (52) back and forth.

Images