Sticker sheet double dispensing device

Abstract

This utility model discloses a double-feeding device for paper stickers, including a frame, a front feeding unit, a front feeding drive device, a glue-applying roller, a glue-applying roller, a rear feeding unit, and a rear feeding drive device. The front feeding unit and the rear feeding unit are slidably disposed at the front and rear of the frame, respectively. The front feeding drive device is disposed at the front of the frame and connected to the front feeding unit, and the rear feeding drive device is disposed at the rear of the frame and connected to the rear feeding unit. The glue-applying roller is rotatably disposed on the frame and can be close to or away from the glue-applying roller. A paper conveying roller is disposed on the frame. A front support roller and a rear support roller are rotatably disposed on the frame below the front feeding unit and the rear feeding unit. Both the front support roller and the rear support roller are eccentric rollers. This utility model sets up a front feeding unit and a rear feeding unit on the unwinding frame. When the paper for making paper bags is glued and conveyed below the front feeding unit and the rear feeding unit, two paper stickers can be pasted on the paper simultaneously.

Description

Technical Field

[0001] This utility model relates to a double feeding device for paper stickers, belonging to the field of paper bag manufacturing technology. Background Technology

[0002] Current paper bag (flap pocket) sticker application technology typically involves only one sticker film applied to the flap of the paper bag, such as... Figure 8 As shown, this method is suitable for single-use food bags, but when some paper bags with special requirements need two stickers, such as... Figure 9 As shown, the top sticker strip is torn off the paper bag seal and then pasted to the other side of the paper bag. When the paper bag needs to be resealed after being opened, the bottom sticker strip is torn off and pasted to the other side of the paper bag. Since existing bag making machines cannot directly paste two sticker strips onto the paper to make the paper bag, this type of paper bag requires manual lamination and pasting of the second sticker strip during manufacturing. The manual lamination method has high labor costs, and the position of the sticker strip pasted manually is not exactly the same each time, so the consistency of the paper bag products is poor. Summary of the Invention

[0003] The purpose of this invention is to provide a double sticker feeding device, which solves the technical defects of existing sticker feeding devices that can only stick one sticker on a paper bag. When two stickers need to be stuck on, manual lamination is required, resulting in high paper bag manufacturing costs and poor consistency of stickers on paper bags.

[0004] To solve the above problems, the technical solution adopted by this utility model is: a double feeding device for paper pasting, including a frame, a front feeding unit, a front feeding drive device, a coating roller, a gluing roller, a rear feeding unit, and a rear feeding drive device. The front feeding unit and the rear feeding unit are slidably disposed at the front and rear of the frame, respectively. The front feeding drive device is disposed at the front of the frame and connected to the front feeding unit, and is used to drive the front feeding unit to slide left and right on the frame. The rear feeding drive device is disposed at the rear of the frame and connected to the rear feeding unit, and is used to drive the rear feeding unit to slide left and right on the frame. The coating roller is rotatably disposed on the frame, and the gluing roller can approach or... Away from the coating roller, as the paper passes over the coating roller, the glue application roller approaches the coating roller to apply glue to the paper. Multiple paper conveying rollers are installed on the frame for paper conveying. A front support roller and a rear support roller are rotatably installed on the frame below the front and rear feeding units, respectively. Both the front and rear support rollers are eccentric rollers. A front support drive device and a rear support drive device are installed on the frame, respectively connected to the front and rear support rollers, to drive the front and rear support rollers to rotate. The rotation of the front and rear support rollers will push the paper upwards, and the paper strips unwound and cut by the front and rear feeding units will be pasted onto the glued paper. This invention features a front feeding unit and a rear feeding unit on the unwinding frame, which can unwind two rolls of sticker sheets. Therefore, when the paper used to make paper bags is conveyed below the front and rear feeding units after being coated with glue, two sticker sheets can be pasted onto the paper simultaneously, eliminating the need for subsequent manual lamination and reducing the cost of paper bag manufacturing. Furthermore, since the positions of the front and rear feeding units on the frame are relatively fixed after adjustment, the sticker sheets can be pasted onto the paper more precisely, improving the consistency of sticker pasting on the paper bags. The positions of the front and rear feeding units on the frame can be adjusted independently, allowing for adjustments based on actual needs during use.

[0005] As a further improvement of this utility model, the front feeding drive device and the rear feeding drive device have the same structure, both including a drive rod and a handwheel. One end of the drive rod is a threaded rod, and the other end is a smooth rod. The smooth rod is rotatably mounted on the frame and has a handwheel. The threaded rods of the front feeding drive device and the rear feeding drive device are threadedly engaged with the front feeding unit and the rear feeding unit, respectively. Rotating the drive rods of the front feeding drive device and the rear feeding drive device drives the front feeding unit and the rear feeding unit to move left and right on the frame, respectively. In this utility model, the smooth rod part of the drive rod facilitates the rotatable connection with the frame and drives the threaded rod to rotate, while the threaded rod part is threadedly engaged with the front feeding unit and the rear feeding unit. The rotation of the threaded rod causes the front feeding unit and the rear feeding unit to move linearly.

[0006] As a further improvement of this utility model, the frame includes a left frame wall panel, a right frame wall panel, a front connecting beam, a middle connecting beam, and a rear connecting beam. The two ends of the front, middle, and rear connecting beams are fixedly connected to the front, middle, and rear parts of the top of the left and right frame wall panels, respectively. The front and rear parts of the front feeding unit are slidably connected to the front and middle connecting beams, respectively, and the front and rear parts of the rear feeding unit are slidably connected to the middle and rear connecting beams, respectively. The front feeding drive device is located between the front and middle connecting beams, and the rear feeding drive device is located between the middle and rear connecting beams. The frame structure of this utility model is stable and facilitates the sliding installation of the front and rear feeding units with the frame.

[0007] As a further improvement of this utility model, both the front feeding unit and the rear feeding unit include a left wall plate, a right wall plate, a suction roller, a cutting roller, an air shaft, multiple connecting rods, and multiple paper sheet conveying rollers. The two ends of the connecting rods are fixedly connected to the left wall plate and the right wall plate, respectively. The two ends of the paper sheet conveying rollers are rotatably connected to the left wall plate and the right wall plate, respectively. The two ends of the air shaft are supported by the left wall plate and the right wall plate, respectively, and can rotate relative to the left wall plate and the right wall plate. It is used to place the paper sheet roll in the use state. The two ends of the suction roller are rotatably connected to the left wall plate and the right wall plate, respectively. The suction roller has suction holes. A suction device is connected to one end of the suction roller by a rotary joint. The suction device draws air to adsorb the paper sheet onto the suction roller. The two ends of the cutting roller are rotatably connected to the left wall plate and the right wall plate, respectively. A cutting knife is installed on the cutting roller. A cutting drive motor is installed on the right wall plate. The cutting drive motor drives the cutting roller and the suction roller to rotate simultaneously. When the cutting knife rotates with the cutting roller to face the suction roller, it cuts the paper sheet.

[0008] As a further improvement of this utility model, a driving gear is provided at one end of the cutting roller, and a driven gear is provided at one end of the suction roller. The driving gear and the driven gear mesh with each other. The cutting drive motor is connected to the cutting roller, and the cutting drive motor drives the cutting roller to rotate, which in turn drives the suction roller to rotate through the meshing of the driving gear and the driven gear. In this utility model, the meshing of the driving gear and the driven gear allows the suction roller to rotate simultaneously with the cutting roller. Furthermore, the cutting roller and the suction roller in this utility model are driven by the same cutting drive motor, reducing the number of drive motors and simplifying the structure of this utility model.

[0009] As a further improvement of this utility model, the front feeding unit and the rear feeding unit also include a traction roller, a rubber pressure roller, and a traction roller drive motor. The two ends of the traction roller are rotatably connected to the left and right wall panels, respectively. The traction roller drive motor is connected to one end of the traction roller. The rubber pressure roller is located above or below the traction roller, and its two ends are rotatably connected to the left and right wall panels, respectively. The sticker roll unwinding roller on the air-expanding shaft passes around the sticker conveying roller, then passes between the traction roller and the rubber pressure roller, and is attracted to the suction roller. The traction roller provides power for the unwinding of the sticker roll. This utility model is equipped with a traction roller and a rubber pressure roller; when the sticker passes between them, the traction roller provides the power for sticker conveying and unwinding.

[0010] As a further improvement of this utility model, the front feeding unit and the rear feeding unit also include a guide plate. The guide plate is located between the traction roller and the suction roller. The paper sheet conveyed by the traction roller and the rubber pressure roller is supported by the guide plate and conveyed towards the suction roller. The guide plate in this utility model provides support for the paper sheet and facilitates its conveying.

[0011] As a further improvement of this utility model, the front feeding unit and the rear feeding unit also include a paper pressing strip fixing rod and multiple paper pressing strips. The two ends of the paper pressing strip fixing rod are fixedly connected to the left wall panel and the right wall panel, respectively. The multiple paper pressing strips are spaced apart in the left-right direction, with one end fixedly connected to the paper pressing strip fixing rod, and the other end bent towards the guide plate and pressing the paper sheet downwards onto the guide plate to prevent the paper sheet from arching upwards on the guide plate. This utility model uses paper pressing strips to guide the paper sheet onto the guide plate, keeping the paper sheet flat on the guide plate and preventing it from arching upwards during transport, which is more conducive to the suction roller adsorbing the paper sheet.

[0012] As a further improvement of this utility model, both the front feeding unit and the rear feeding unit include two feeding arms. The two feeding arms of the front feeding unit are fixed to the front of the left wall panel and the right wall panel, respectively. The two ends of the air shaft of the front feeding unit are supported by the front ends of the feeding arms and rotate relative to the feeding arms. The two feeding arms of the rear feeding unit are fixed to the rear of the left wall panel and the right wall panel, respectively. The two ends of the air shaft of the rear feeding unit are supported by the rear ends of the rear feeding unit and rotate relative to the feeding arms. This utility model provides feeding arms to facilitate the installation and support of the air shaft. At the same time, the feeding arms extend to one side so that the unwinding of the paper roll is not disturbed.

[0013] As a further improvement of this utility model, both the front support drive device and the rear support drive device are cylinders. The cylinder body is rotatably mounted on the frame, and a swing rod is rotatably connected to the piston rod of the cylinder. The end of the swing rod of the front support drive device and the rear support drive device away from the piston rod of the cylinder is fixedly connected to the front support roller and the rear support roller, respectively. The extension or retraction of the piston rod of the cylinder is used to drive the front support roller and the rear support roller to rotate by swinging the swing rod. This utility model drives the front support roller and the rear support roller to rotate by the extension and retraction of the cylinder piston rod. The overall structure is simple and easy to operate.

[0014] In summary, the beneficial effects of this utility model are as follows: This utility model is equipped with a front feeding unit and a rear feeding unit, which can place two sticker rolls to unroll the stickers, thereby pasting two sticker strips on the paper to make the paper bag without the need for subsequent manual lamination, reducing the labor cost of paper bag manufacturing, and improving the consistency of pasting the two sticker strips on the paper bag. Attached Figure Description

[0015] Figure 1 This is a longitudinal sectional view of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the present invention from another angle.

[0018] Figure 4 This is a schematic diagram of the front feeding unit and the rear feeding unit in this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the frame in this utility model.

[0020] Figure 6 This is a schematic diagram of the installation of the frame, the left wall panel, and the right wall panel of the front feeding unit and the rear feeding unit in this utility model.

[0021] Figure 7 This is a longitudinal sectional view of the front support roller and the rear support roller in this utility model.

[0022] Figure 8 This is a diagram of a paper bag with only one sticker.

[0023] Figure 9 This is a diagram of a paper bag with two stickers.

[0024] The components include: 1. Frame; 2. Front feeding unit; 3. Front feeding drive device; 4. Glue roller; 5. Applying roller; 6. Rear feeding unit; 7. Rear feeding drive device; 8. Paper conveying roller; 9. Front support roller; 10. Rear support roller; 11. Front support drive device; 12. Rear support drive device; 13. Handwheel; 14. Threaded rod; 15. Smooth rod; 16. Left frame wall panel; 17. Right frame wall panel; 18. Front connecting beam; 19. Middle connecting beam; 20. Rear connecting beam; 21. 21. Left wall panel; 22. Right wall panel; 23. Suction roller; 24. Cutting roller; 25. Air shaft; 26. Connecting rod; 27. Paper sheet conveying roller; 28. Cutting knife; 29. ​​Cutting drive motor; 30. Drive gear; 31. Driven gear; 32. Traction roller; 33. Rubber pressure roller; 34. Traction roller drive motor; 35. Guide plate; 36. Paper pressing strip fixing rod; 37. Paper pressing strip; 38. Feeding arm; 39. Swing rod; 40. Rubber roller core shaft; 41. Rubber roller; 42. Eccentric sleeve. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 3 The illustrated dual-feeding device for paper sheets includes a frame 1, a front feeding unit 2, a front feeding drive device 3, a coating roller 4, an application roller 5, a rear feeding unit 6, and a rear feeding drive device 7. The front feeding unit 2 and the rear feeding unit 6 are slidably disposed at the front and rear of the frame 1, respectively. The front feeding drive device 3 is disposed at the front of the frame 1 and connected to the front feeding unit 2, driving the front feeding unit 2 to slide left and right on the frame 1. The rear feeding drive device 7 is disposed at the rear of the frame 1 and connected to the rear feeding unit 6, driving the rear feeding unit 6 to slide left and right on the frame 1. The coating roller 4 is rotatably disposed on the frame 1. The application roller 5 can move closer to or further away from the coating roller 4. The paper passes over the coating roller... At time 4, the gluing roller 5 is close to the coating roller 4 to apply glue to the paper. Multiple paper conveying rollers 8 are provided on the frame 1 for paper conveying. A front support roller 9 and a rear support roller 10 are rotatably arranged on the frame 1 below the front feeding unit 2 and the rear feeding unit 6, respectively. Both the front support roller 9 and the rear support roller 10 are eccentric rollers. A front support drive device 11 and a rear support drive device 12 are provided on the frame 1, respectively connected to the front support roller 9 and the rear support roller 10, to drive the front support roller 9 and the rear support roller 10 to rotate. The rotation of the front support roller 9 and the rear support roller 10 will push the paper upwards, and the paper sheet unwound and cut by the front feeding unit 2 and the rear feeding unit 6 will be pasted onto the glued paper.

[0027] like Figure 5 and Figure 6As shown, the frame 1 of this utility model includes a left frame wall panel 16, a right frame wall panel 17, a front connecting beam 18, a middle connecting beam 19, and a rear connecting beam 20. The left frame wall panel 16 and the right frame wall panel 17 have the same shape and are arranged parallel to each other. The two ends of the front connecting beam 18, the middle connecting beam 19, and the rear connecting beam 20 are respectively fixedly connected to the front, middle, and rear parts of the top of the left frame wall panel 16 and the right frame wall panel 17. This utility model also uses multiple connecting beams to fix the lower parts of the left frame wall panel 16 and the right frame wall panel 17. To enhance the overall strength of the frame 1, the front and rear parts of the front feeding unit 2 are slidably connected to the front connecting beam 18 and the middle connecting beam 19, respectively, and the front and rear parts of the rear feeding unit 6 are slidably connected to the middle connecting beam 19 and the rear connecting beam 20, respectively. The front feeding unit 2 and the rear feeding unit 6 in this invention can be moved and adjusted independently relative to the frame. The front feeding drive device 3 in this invention is located between the front connecting beam 18 and the middle connecting beam 19, and the rear feeding drive device 7 is located between the middle connecting beam 19 and the rear connecting beam 20.

[0028] The front support roller 9 and the rear support roller 10 in this utility model have the same structure, both including a rubber roller mandrel 40, a rubber roller 41, and two eccentric sleeves 42, as shown below. Figure 7 As shown, the rubber roller 41 is cylindrical, and its inner diameter is larger than that of the rubber roller mandrel 40. The rubber roller 41 is sleeved on the rubber roller mandrel 40. Two eccentric sleeves 42 have circular through holes, the center lines of which do not coincide with the center lines of the eccentric sleeves 42, and are used for the rubber roller mandrel 40 to pass through. The two eccentric sleeves 42 are sleeved on the rubber roller mandrel 40 near both ends. The two ends of the rubber roller 41 are fixed to the rubber roller mandrel 40 by the eccentric sleeves 42, and the rubber roller 41 and the rubber roller mandrel 40 are kept eccentrically separated. The two ends of the rubber roller core 40 are rotatably connected to the left frame wall plate 16 and the right frame wall plate 17 by bearings, respectively. One end of the rubber roller core 40 of the front support roller 9 and the rear support roller 10 is connected to the front support drive device 11 and the rear support drive device 12, respectively. In this utility model, since the rubber roller 41 and the rubber roller core 40 are eccentrically set, the height of the top of the outer surface of the rubber roller 41 changes when the rubber roller core 40 rotates, so that the paper can be pushed upward when the sticker needs to be pasted.

[0029] like Figure 2 and Figure 3As shown, the front feeding drive device 3 and the rear feeding drive device 7 of this utility model have the same structure, both including a drive rod and a handwheel 13. One end of the drive rod is a threaded rod 14, and the other end is a smooth rod 15. The threaded rod 14 and the smooth rod 15 are integrally formed. The smooth rod 15 is rotatably mounted on the left frame wall plate 16 of the frame 1 using a bearing seat with built-in bearings and is provided with a handwheel 13. The handwheel 13 is fixedly connected to the smooth rod 15. The threaded rods 14 of the front feeding drive device 3 and the rear feeding drive device 7 are threadedly engaged with the front feeding unit 2 and the rear feeding unit 6, respectively. Rotating the drive rods of the front feeding drive device 3 and the rear feeding drive device 7 converts the rotation of the drive rods into linear motion of the front feeding unit 2 and the rear feeding unit 6, thereby driving the front feeding unit 2 and the rear feeding unit 6 to move left and right on the frame 1 along the length direction of the drive rod. Before use, the positions of the front feeding unit 2 and the rear feeding unit 6 on the frame 1 are adjusted by rotating the handwheel 13 as needed.

[0030] like Figures 1 to 4 As shown, both the front feeding unit 2 and the rear feeding unit 6 of this utility model include a left wall plate 21, a right wall plate 22, a paper suction roller 23, a cutting roller 24, an air shaft 25, multiple connecting rods 26, and multiple paper sheet conveying rollers 27. The left wall plate 21 and the right wall plate 22 have the same structure and are parallel. The two ends of the connecting rods 26 are fixedly connected to the left wall plate 21 and the right wall plate 22 respectively. The two ends of the paper sheet conveying rollers 27 are rotatably connected to the left wall plate 21 and the right wall plate 22 respectively. The two ends of the air shaft 25 are supported by the left wall plate 21 and the right wall plate 22 respectively, and can rotate relative to the left wall plate 21 and the right wall plate 22. It is used to place the paper sheet roll in the use state. The two ends of the paper suction roller 23 are rotatably connected to the left wall plate 21 and the right wall plate 22 respectively. In this utility model, the paper suction roller 23 has a hollow structure, and one end of the paper suction roller 23... The suction roller 23 is enclosed and has several suction holes communicating with its central hole. At the unenclosed end of the suction roller 23, a suction device is connected to a rotary joint and an air pipe. The suction device draws air to adsorb the paper sheet onto the suction roller 23. When the suction device stops drawing air or blowing air, the paper sheet adsorbed on the suction roller can be released and pasted onto the paper conveyed from below the suction roller 23. The two ends of the cutting roller 24 are rotatably connected to the left wall plate 21 and the right wall plate 22, respectively. A cutting blade 28 is installed on the cutting roller 24 and is arranged along the length of the cutting roller 24. A cutting drive motor 29 is installed on the right wall plate 22. The cutting drive motor 29 drives the cutting roller 24 and the suction roller 23 to rotate simultaneously. When the cutting blade 28 rotates with the cutting roller 24 to the side facing the suction roller 23, it cuts the paper sheet.

[0031] like Figure 3As shown, the specific structure of this utility model that enables a single cutting drive motor 29 to simultaneously drive the cutting roller 24 and the suction roller 23 to rotate is as follows: a drive gear 30 is provided at the right end of the cutting roller 24, and a driven gear 31 is provided at the right end of the suction roller 23. The drive gear 30 and the driven gear 31 mesh with each other. The cutting drive motor 29 is connected to the right end of the cutting roller 24. The cutting drive motor 29 drives the cutting roller 24 to rotate and drives the suction roller 23 to rotate through the meshing of the drive gear 30 and the driven gear 31.

[0032] like Figure 4 As shown, both the front feeding unit 2 and the rear feeding unit 6 of this utility model further include a traction roller 32, a rubber pressure roller 33, and a traction roller drive motor 34. The two ends of the traction roller 32 are rotatably connected to the left wall plate 21 and the right wall plate 22, respectively. The traction roller drive motor 34 is mounted on the right wall plate 22 and connected to the right end of the traction roller 32. The rubber pressure roller 33 is located above or below the traction roller 32. In this utility model, the rubber pressure roller 33 of the front feeding unit 2 is located above the traction roller 32, while the rubber pressure roller 33 of the rear feeding unit 6 is located below the traction roller 32. The two ends of the rubber pressure roller 33 are rotatably connected to the left wall plate 21 and the right wall plate 22, respectively. The position of the rubber pressure roller 33 in this utility model can be adjusted relative to the traction roller 32. The rubber pressure roller 33 of the front feeding unit 2... Each end of the 3 is provided with a sliding block, which is rotatably connected to the rubber pressure roller 33. The two sliding blocks are respectively slidably set on the left wall plate 21 and the right wall plate 22. The rubber pressure roller 33 can rotate relative to the left wall plate 21 and the right wall plate 22 by rotating relative to the sliding blocks. The sliding blocks in this utility model can be slidably installed on the left wall plate 21 and the right wall plate 22 by using vertically set slide rails. The sliding blocks in this utility model can be adjusted up and down by using screws that are threaded to the left wall plate 21 and the right wall plate 22. In this utility model, the sticker roll unwinding roller on the air shaft 25 passes around the sticker conveying roller 27, then passes between the traction roller 32 and the rubber pressure roller 33, and is attracted to the suction roller 23. The traction roller 32 provides power for unwinding the sticker roll.

[0033] like Figure 1 and Figure 4As shown, both the front feeding unit 2 and the rear feeding unit 6 of this utility model also include a guide plate 35. The guide plate 35 is located between the traction roller 32 and the suction roller 23. The two ends of the guide plate 35 are fixedly connected to the left wall plate 21 and the right wall plate 22, respectively. The paper sheet conveyed by the traction roller 32 and the rubber pressure roller 33 is supported by the guide plate 35 and conveyed towards the suction roller 23. Both the front feeding unit 2 and the rear feeding unit 6 of this utility model are provided with a paper pressing strip fixing rod 36 and multiple paper pressing strips 37. The two ends of the paper pressing strip fixing rod 36 are fixedly connected to the left wall plate 21 and the right wall plate 22, respectively. The multiple paper pressing strips 37 are distributed at equal intervals in the left and right directions. One end of the paper pressing strip 37 is fixedly connected to the paper pressing strip fixing rod 36, and the other end of the paper pressing strip 37 bends towards the guide plate 35 and presses the paper sheet downward on the guide plate 35 to prevent the paper sheet from arching upward on the guide plate 35.

[0034] like Figure 1 and Figure 4 As shown, in order to facilitate the placement and support of the air shaft 25, both the front feeding unit 2 and the rear feeding unit 6 in this utility model include two feeding arms 38. The two feeding arms 38 of the front feeding unit 2 are fixed to the front of the left wall plate 21 and the right wall plate 22, respectively. The two ends of the air shaft 25 of the front feeding unit 2 are supported by the front ends of the feeding arms 38 of the front feeding unit 2 and rotate relative to the feeding arms 38. The two feeding arms 38 of the rear feeding unit 6 are fixed to the rear ends of the left wall plate 21 and the right wall plate 22, respectively. The two ends of the air shaft 25 of the rear feeding unit 6 are supported by the rear ends of the rear feeding unit 6 and rotate relative to the feeding arms 38.

[0035] like Figure 3 and Figure 5 As shown, the front support drive device 11 and the rear support drive device 12 in this utility model are both cylinders. The cylinder body is rotatably mounted on the frame 1. A rocker arm 39 is rotatably connected to the piston rod of the cylinder. The end of the rocker arm 39 of the front support drive device 11 and the rear support drive device 12 away from the piston rod of the cylinder is fixedly connected to the front support roller 9 and the rear support roller 10. The extension or retraction of the piston rod of the cylinder is used to drive the front support roller 9 and the rear support roller 10 to rotate by swinging the rocker arm 39.

[0036] Unless otherwise specified in the above description, all parts are existing technology or can be implemented using existing technology. Furthermore, the specific embodiments described in this utility model are merely preferred embodiments of the invention and are not intended to limit the scope of this utility model. That is, all equivalent changes and modifications made within the scope of this utility model patent should be considered within the technical scope of this utility model.

Claims

1. A double-feeding device for paper stickers, characterized in that: The machine includes a frame, a front feeding unit, a front feeding drive, a coating roller, a gluing roller, a rear feeding unit, and a rear feeding drive. The front and rear feeding units are slidably mounted at the front and rear of the frame, respectively. The front feeding drive is located at the front of the frame and connected to the front feeding unit, driving the front feeding unit to slide left and right on the frame. The rear feeding drive is located at the rear of the frame and connected to the rear feeding unit, driving the rear feeding unit to slide left and right on the frame. The coating roller is rotatably mounted on the frame, and the gluing roller can move closer to or further away from the coating roller. As the paper passes over the coating roller, the gluing roller... The glue roller is close to the glue coating roller for applying glue to the paper. Multiple paper conveying rollers are installed on the frame for conveying the paper. A front support roller and a rear support roller are rotatably installed on the frame below the front and rear feeding units, respectively. Both the front and rear support rollers are eccentric rollers. A front support drive device and a rear support drive device are installed on the frame, respectively connected to the front and rear support rollers, for driving the front and rear support rollers to rotate. The rotation of the front and rear support rollers will lift the paper upwards, and the paper strips unwound and cut by the front and rear feeding units will be pasted onto the glued paper.

2. The double feeding device for paper stickers according to claim 1, characterized in that: The front feeding drive device and the rear feeding drive device have the same structure, both including a drive rod and a handwheel. One end of the drive rod is a threaded rod, and the other end is a smooth rod. The smooth rod is rotatably mounted on the frame and is equipped with a handwheel. The threaded rods of the front feeding drive device and the rear feeding drive device are threadedly engaged with the front feeding unit and the rear feeding unit, respectively. Rotating the drive rods of the front feeding drive device and the rear feeding drive device is used to drive the front feeding unit and the rear feeding unit to move left and right on the frame, respectively.

3. The double feeding device for paper stickers according to claim 1, characterized in that: The frame includes a left frame wall panel, a right frame wall panel, a front connecting beam, a middle connecting beam, and a rear connecting beam. The two ends of the front connecting beam, the middle connecting beam, and the rear connecting beam are fixedly connected to the front, middle, and rear parts of the top of the left frame wall panel and the right frame wall panel, respectively. The front and rear parts of the front feeding unit are slidably connected to the front connecting beam and the middle connecting beam, respectively. The front and rear parts of the rear feeding unit are slidably connected to the middle connecting beam and the rear connecting beam, respectively. The front feeding drive device is located between the front connecting beam and the middle connecting beam, and the rear feeding drive device is located between the middle connecting beam and the rear connecting beam.

4. The double feeding device for paper stickers according to claim 3, characterized in that: Both the front and rear feeding units include a left wall panel, a right wall panel, a suction roller, a cutting roller, an air shaft, multiple connecting rods, and multiple paper sheet conveying rollers. The two ends of the connecting rods are fixedly connected to the left and right wall panels respectively. The two ends of the paper sheet conveying rollers are rotatably connected to the left and right wall panels respectively. The two ends of the air shaft are supported by the left and right wall panels respectively and can rotate relative to them, used to place paper sheet rolls in use. The two ends of the suction roller are rotatably connected to the left and right wall panels respectively, and suction holes are provided on the suction roller. A rotary joint connects to an air suction device at one end of the suction roller. The air suction device draws air to adsorb the paper sheet onto the suction roller. The two ends of the cutting roller are rotatably connected to the left and right wall panels respectively, and a cutting blade is installed on the cutting roller. A cutting drive motor is installed on the right wall panel. This cutting drive motor simultaneously drives the cutting roller and the suction roller to rotate. The paper sheet is cut when the cutting blade rotates with the cutting roller to face the suction roller.

5. The double feeding device for sticker sheets according to claim 4, characterized in that: A drive gear is provided at one end of the cutting roller, and a driven gear is provided at one end of the suction roller. The drive gear and the driven gear mesh with each other. The cutting drive motor is connected to the cutting roller. The cutting drive motor drives the cutting roller to rotate and drives the suction roller to rotate through the meshing of the drive gear and the driven gear.

6. The double feeding device for paper stickers according to claim 4, characterized in that: The front and rear feeding units also include a traction roller, a rubber pressure roller, and a traction roller drive motor. The two ends of the traction roller are rotatably connected to the left and right wall panels, respectively. The traction roller drive motor is connected to one end of the traction roller. The rubber pressure roller is located above or below the traction roller. The two ends of the rubber pressure roller are rotatably connected to the left and right wall panels, respectively. The paper roll unwinding roller on the air shaft passes around the paper conveying roller, then passes between the traction roller and the rubber pressure roller, and is attracted to the suction roller. The traction roller provides power for unwinding the paper roll.

7. The double feeding device for paper stickers according to claim 6, characterized in that: The front and rear feeding units also include a guide plate, which is located between the traction roller and the suction roller. The paper sheets conveyed by the traction roller and the rubber pressure roller are supported by the guide plate and conveyed toward the suction roller.

8. The double feeding device for sticker sheets according to claim 7, characterized in that: The front feeding unit and the rear feeding unit also include a paper pressing strip fixing rod and multiple paper pressing strips. The two ends of the paper pressing strip fixing rod are fixedly connected to the left wall panel and the right wall panel respectively. The multiple paper pressing strips are spaced apart in the left and right direction. One end of each strip is fixedly connected to the paper pressing strip fixing rod, and the other end is bent toward the guide plate and presses the paper sheet downward on the guide plate to prevent the paper sheet from arching upward on the guide plate.

9. The double feeding device for sticker sheets according to claim 4, characterized in that: Both the front feeding unit and the rear feeding unit include two feeding arms. The two feeding arms of the front feeding unit are fixed to the front of the left wall panel and the right wall panel, respectively. The two ends of the air expansion shaft of the front feeding unit are supported by the front end of the feeding arm of the front feeding unit and rotate relative to the feeding arm. The two feeding arms of the rear feeding unit are fixed to the rear of the left wall panel and the right wall panel, respectively. The two ends of the air expansion shaft of the rear feeding unit are supported by the rear end of the rear feeding unit and rotate relative to the feeding arm.

10. The double feeding device for sticker sheets according to claim 1, characterized in that: Both the front support drive device and the rear support drive device are cylinders. The cylinder body is rotatably mounted on the frame. A rocker arm is rotatably connected to the piston rod of the cylinder. The end of the rocker arm of the front support drive device and the rear support drive device away from the piston rod of the cylinder is fixedly connected to the front support roller and the rear support roller. The extension or retraction of the piston rod of the cylinder is used to drive the front support roller and the rear support roller to rotate by swinging the rocker arm.

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