Gluing device for kraft paper bag processing
By designing the gluing and laminating mechanism of the gluing device, the problem of asynchronous gluing and inner layer lamination of kraft paper bags was solved, achieving efficient automated processing.
Patent Information
- Application Number
- CN202520619902.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-03
AI Technical Summary
In existing kraft paper bag processing technology, gluing and inner layer lamination cannot be carried out simultaneously, resulting in low processing efficiency.
A glue-applying device was designed, comprising a glue-applying mechanism and a laminating mechanism. The glue-applying mechanism applies glue through a sponge sleeve, while the laminating mechanism synchronously conveys and laminates kraft paper and woven inner layer through a conveyor roller, thereby achieving synchronous glue application and lamination.
It improves the processing efficiency of kraft paper bags and enables automated and simultaneous gluing and inner layer lamination.
Smart Images

Figure CN223972240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of kraft paper bag processing technology, specifically to a gluing device for kraft paper bag processing. Background Technology
[0002] Kraft paper bags are packaging containers made of composite materials or pure kraft paper. They are non-toxic, odorless, pollution-free, low-carbon, and environmentally friendly, meeting national environmental protection standards. They are high-strength and environmentally friendly, and are one of the most popular environmentally friendly packaging materials internationally.
[0003] However, existing technologies still have some shortcomings in processing kraft paper bags:
[0004] Kraft paper bags typically consist of two layers: an outer kraft paper layer and an inner woven lining layer. With current technology, it is inconvenient to simultaneously laminate the lining layer onto the kraft paper during the gluing process. This requires a separate operation on the next production line, resulting in low processing efficiency for kraft paper bags. Utility Model Content
[0005] In order to solve the above problems, the purpose of this utility model is to provide a gluing device for processing kraft paper bags.
[0006] To solve the above technical problems, the present invention adopts the following technical solution: a gluing device for processing kraft paper bags, including a frame table, two fixed frames are fixedly installed at one end of the upper surface of the frame table, a first U-shaped frame is fixedly installed in the middle of the upper surface of the frame table, a second U-shaped frame is fixedly installed at the other end of the upper surface of the frame table, a gluing mechanism is provided between the two fixed frames, and a laminating mechanism is provided on the first U-shaped frame and the second U-shaped frame;
[0007] The glue application mechanism includes a glue storage tank, which is fixedly installed between two fixed frames. A conical glue hopper is fixedly installed at the bottom of the glue storage tank, and an arc-shaped opening is provided at the bottom end of the conical glue hopper.
[0008] A first motor is fixedly installed on one side of the fixed frame. A rotating shaft is fixedly installed on the drive output end of the first motor. A fixed roller is fixedly installed on the rotating shaft. A first sponge sleeve is fixedly installed on the outer wall of the fixed roller. The outer wall of the first sponge sleeve is in movable contact with the arc-shaped opening.
[0009] Preferably, a baffle plate is fixedly installed at the bottom of the glue storage tank, and the baffle plate has a plurality of evenly distributed conical holes.
[0010] Preferably, a rotating roller is rotatably mounted on the fixed frame, and a second sponge sleeve is fixedly mounted on the rotating roller.
[0011] Preferably, a support roller is rotatably mounted on the fixed frame, the support roller being located below the fixed roller and vertically corresponding to the fixed roller.
[0012] Preferably, the laminating mechanism includes a guide roller and two first conveying rollers. The guide roller is rotatably mounted on one end of the first U-shaped frame, and the two first conveying rollers are rotatably mounted on the other end of the first U-shaped frame. A first gear is fixedly mounted on one end of each of the two first conveying rollers, and the two first gears are meshed together.
[0013] Preferably, the laminating mechanism further includes two second conveying rollers and two third conveying rollers, which are rotatably mounted on the inner wall of the second U-shaped frame. A second gear is fixedly mounted on one end of each of the two second conveying rollers, and the two second gears are meshed together. A third gear is fixedly mounted on one end of each of the two third conveying rollers, and the two third gears are meshed together.
[0014] A second motor is fixedly installed on one side of the second U-shaped frame. The drive output end of the second motor is fixedly connected to one end of a third conveyor roller. A first synchronous pulley is fixedly installed on one end of one of the third conveyor rollers and one end of one of the second conveyor rollers. A first synchronous belt is installed between the two first synchronous pulleys. A second synchronous pulley is fixedly installed on one end of one of the second conveyor rollers and one end of one of the first conveyor rollers. A second synchronous belt is installed between the two second synchronous pulleys.
[0015] Preferably, a plurality of passive rollers are rotatably mounted on the inner wall of the second U-shaped frame, and the plurality of passive rollers are located between the second conveying roller and the third conveying roller.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] In this invention, the glue coating mechanism and the laminating mechanism work together to drive the first sponge sleeve in the glue coating mechanism to rotate. The first sponge sleeve applies the absorbed glue to the kraft paper. The first conveying roller, the second conveying roller, and the third conveying roller in the laminating mechanism laminate the woven inner layer onto the kraft paper and convey the kraft paper and the woven inner layer, so that the woven inner layer automatically adheres to the kraft paper. This facilitates the glue coating of the kraft paper and the laminating process of the kraft paper and the woven inner layer, thereby effectively improving the processing efficiency of kraft paper bags. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of a gluing device for processing kraft paper bags according to the present invention.
[0020] Figure 2 This is another overall structural schematic diagram of the gluing device for processing kraft paper bags according to this utility model.
[0021] Figure 3 This is a cross-sectional structural diagram of the glue storage box and conical glue hopper of this utility model.
[0022] Figure 4 This is a schematic diagram showing the separation of the arc-shaped opening and the first sponge sleeve of this utility model.
[0023] Figure 5 This is a schematic diagram of the lamination mechanism of this utility model.
[0024] Figure 6 This is a schematic diagram showing the orientation of the kraft paper and the woven inner layer in an embodiment of this utility model.
[0025] In the diagram: 1. Frame; 11. Fixed frame; 12. First U-shaped frame; 13. Second U-shaped frame; 2. Glue application mechanism; 4. Laminating mechanism; 21. Glue storage tank; 22. Conical glue hopper; 23. Arc-shaped opening; 24. Barrier plate; 25. Conical hole; 26. First motor; 27. Rotating shaft; 28. Fixed roller; 29. First sponge sleeve; 3. Rotating roller; 31. Second sponge sleeve; 32. Support roller; 41. Guide roller; 42. First conveyor roller; 43. First gear; 45. Second conveyor roller; 46. Third conveyor roller; 47. Passive roller; 48. Second gear; 49. Third gear; 5. Second motor; 51. First synchronous pulley; 52. First synchronous belt; 53. Second synchronous pulley; 54. Second synchronous belt; 10. Kraft paper; 20. Braided inner layer. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Example: Figure 1-6 As shown, this utility model provides a gluing device for processing kraft paper bags, including a frame 1. Two fixed frames 11 are fixedly installed at one end of the upper surface of the frame 1. A first U-shaped frame 12 is fixedly installed in the middle of the upper surface of the frame 1. A second U-shaped frame 13 is fixedly installed at the other end of the upper surface of the frame 1. A gluing mechanism 2 is provided between the two fixed frames 11. By setting the gluing mechanism 2, the gluing mechanism 2 can evenly coat the kraft paper 10 with glue. A laminating mechanism 4 is provided on the first U-shaped frame 12 and the second U-shaped frame 13. By setting the laminating mechanism 4, the laminating mechanism 4 can press the woven inner layer 20 onto the kraft paper 10. At the same time, it can transport the kraft paper 10 and the woven inner layer 20, thereby performing laminating processing on the kraft paper 10 and the woven inner layer 20 and improving the processing efficiency of kraft paper bags.
[0028] The glue application mechanism 2 includes a glue storage tank 21. By setting the glue storage tank 21, it is convenient to store glue for glue application. The glue storage tank 21 is fixedly set between two fixed frames 11. A conical glue hopper 22 is fixedly installed at the bottom of the glue storage tank 21. An arc-shaped opening 23 is opened at the bottom end of the conical glue hopper 22. By setting the conical glue hopper 22 and the arc-shaped opening 23, the glue in the glue storage tank 21 can flow downward through the arc-shaped opening 23. A baffle plate 24 is fixedly installed at the bottom of the glue storage tank 21. A plurality of evenly distributed conical holes 25 are opened on the baffle plate 24. By setting the baffle plate 24 and the conical holes 25, the inner diameter of the upper end of the conical hole 25 is larger than the inner diameter of the bottom end. The glue in the glue storage tank 21 flows downward through the conical holes 25. The setting of the baffle plate 24 and the conical holes 25 can reduce the downward flow rate of the glue and prevent too much glue from entering the arc-shaped opening 23.
[0029] A first motor 26 is fixedly installed on one side of the fixed frame 11. A rotating shaft 27 is fixedly installed on the drive output end of the first motor 26. A fixed roller 28 is fixedly installed on the rotating shaft 27. A first sponge sleeve 29 is fixedly installed on the outer wall of the fixed roller 28. The outer wall of the first sponge sleeve 29 is in contact with the arc-shaped opening 23. When the first motor 26 is turned on, the drive shaft of the first motor 26 can make the rotating shaft 27 rotate. The rotating shaft 27 can make the first sponge sleeve 29 rotate through the fixed roller 28. The first sponge sleeve 29 can absorb the glue at the arc-shaped opening 23. When the kraft paper 10 passes under the first sponge sleeve 29, the first sponge sleeve 29 can coat the absorbed glue onto the kraft paper 10.
[0030] A rotating roller 3 is rotatably mounted on the fixed frame 11, and a second sponge sleeve 31 is fixedly mounted on the rotating roller 3. By setting the rotating roller 3 and the second sponge sleeve 31, the height of the second sponge sleeve 31 is slightly higher than that of the first sponge sleeve 29. When the kraft paper 10 passes under the first sponge sleeve 29, the kraft paper 10 passes under the second sponge sleeve 31. If the thickness of the glue on the kraft paper 10 is higher than that of the second sponge sleeve 31, the second sponge sleeve 31 can absorb the excess glue on the kraft paper 10 and control the thickness of the glue on the kraft paper 10.
[0031] A support roller 32 is rotatably mounted on the fixed frame 11. The support roller 32 is located below the fixed roller 28 and is vertically corresponding to the fixed roller 28. By setting the support roller 32, when the first sponge sleeve 29 is coated with glue, the support roller 32 can support the kraft paper 10 and improve the stability of the kraft paper 10.
[0032] The laminating mechanism 4 includes a guide roller 41, two first conveying rollers 42, two second conveying rollers 45, and two third conveying rollers 46. The guide roller 41 is rotatably mounted on one end of the first U-shaped frame 12, and the two first conveying rollers 42 are rotatably mounted on the other end of the first U-shaped frame 12. A first gear 43 is fixedly mounted on one end of each of the two first conveying rollers 42. The two first gears 43 are meshed and connected. By driving the first conveying rollers 42, the second conveying rollers 45, and the third conveying rollers 46 to rotate, the first conveying rollers 42, the second conveying rollers 45, and the third conveying rollers 46 can convey the kraft paper 10 and the woven inner layer 20. By setting the two first gears 43, the transmission of the two first gears 43 can make the two first conveying rollers 42 rotate synchronously in opposite directions.
[0033] Two second conveying rollers 45 and two third conveying rollers 46 are rotatably mounted on the inner wall of the second U-shaped frame 13. A second gear 48 is fixedly mounted on one end of each of the two second conveying rollers 45, and the two second gears 48 are meshed together. A third gear 49 is fixedly mounted on one end of each of the two third conveying rollers 46, and the two third gears 49 are meshed together. By setting the second gears 48 and the third gears 49, the two second conveying rollers 45 can rotate synchronously in opposite directions, and the two third conveying rollers 46 can rotate synchronously in opposite directions.
[0034] A second motor 5 is fixedly installed on one side of the second U-shaped frame 13. The drive output end of the second motor 5 is fixedly connected to one end of a third conveyor roller 46. A first synchronous pulley 51 is fixedly installed on one end of the third conveyor roller 46 and one end of the second conveyor roller 45. A first synchronous belt 52 is installed between the two first synchronous pulleys 51. A second synchronous pulley 53 is fixedly installed on one end of the second conveyor roller 45 and one end of the first conveyor roller 42. A second synchronous belt 54 is installed between the two second synchronous pulleys 53. When the second motor 5 is turned on, the drive shaft of the second motor 5 can make the third conveyor roller 46 rotate. At the same time, the second conveyor roller 45 is rotated through the first synchronous pulley 51 and the first synchronous belt 52. The second conveyor roller 45 can make the first conveyor roller 42 rotate through the second synchronous pulley 53 and the second synchronous belt 54.
[0035] The inner wall of the second U-shaped frame 13 is rotatably equipped with a number of evenly distributed passive rollers 47. The passive rollers 47 are located between the second conveying roller 45 and the third conveying roller 46. By setting the passive rollers 47, the passive rollers 47 can support the kraft paper 10 and the woven inner layer 20 during the conveying process, thereby improving the stability of the kraft paper 10 and the woven inner layer 20.
[0036] Working principle: When it is necessary to apply glue to kraft paper 10, the operator first adds glue to the glue storage tank 21. The glue in the glue storage tank 21 passes through the conical hole 25 and enters the arc-shaped opening 23. At the same time, the first sponge sleeve 29 absorbs the glue coming out of the arc-shaped opening 23.
[0037] Subsequently, as Figure 6 The operator first passes the kraft paper 10 between the first sponge sleeve 29 and the support roller 32, and then passes the kraft paper 10 between the two first conveying rollers 42, the two second conveying rollers 45, the multiple passive rollers 47 and the two third conveying rollers 46. At the same time, the braided inner layer 20 passes around the guide roller 41 and passes between the two first conveying rollers 42, the two second conveying rollers 45, the multiple passive rollers 47 and the two third conveying rollers 46 in sequence. At this time, the braided inner layer 20 is located on the upper surface of the kraft paper 10.
[0038] Once ready, the operator simultaneously starts the first motor 26 and the second motor 5. The drive shaft of the first motor 26 rotates the first sponge sleeve 29 via the rotating shaft 27 and the fixed roller 28. During rotation, the first sponge sleeve 29 applies the absorbed adhesive to the kraft paper 10. Simultaneously, the drive shaft of the second motor 5 rotates the third conveyor roller 46, which in turn rotates the second conveyor roller 45 via the first synchronous pulley 51 and the first synchronous belt 52. The second conveyor roller 45, through the second synchronous pulley 53 and the second synchronous belt 54, rotates the first conveyor roller 42, which is driven by two first gears 43, two second gears 48, and two third gears 49. The first conveying roller 42, the two second conveying rollers 45, and the two third conveying rollers 46 rotate synchronously in opposite directions to convey the kraft paper 10 and the woven inner layer 20 (transporting the kraft paper 10 and the woven inner layer 20 to the external drying equipment). During this process, adhesive is applied to the kraft paper 10. When the kraft paper 10 and the woven inner layer 20 are bonded together, the woven inner layer 20 is pressed onto the upper surface of the kraft paper 10 by the adhesive. This facilitates the application of adhesive to the kraft paper 10 and the bonding process between the kraft paper 10 and the woven inner layer 20, thereby effectively improving the processing efficiency of kraft paper bags.
[0039] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0040] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A kind of kraft paper bag processing glue coating device, including rack table (1), it is characterized in that: The upper surface of the rack table (1) is fixedly provided with two fixed frames (11) at one end, a first U-shaped frame (12) is fixedly arranged at the middle of the upper surface of the rack table (1), and a second U-shaped frame (13) is fixedly arranged at the other end of the upper surface of the rack table (1), a gluing mechanism (2) is arranged between the two fixed frames (11), and a laminating mechanism (4) is arranged on the first U-shaped frame (12) and the second U-shaped frame (13). The gluing mechanism (2) comprises a glue storage tank (21), the glue storage tank (21) is fixedly arranged between the two fixed frames (11), and a conical glue hopper (22) is fixedly arranged at the bottom of the glue storage tank (21); and an arc-shaped opening (23) is formed at the bottom end of the conical glue hopper (22). A first motor (26) is fixedly arranged on one side of the fixed frame (11), a rotating shaft (27) is fixedly arranged on the driving output end of the first motor (26), a fixed roller (28) is fixedly arranged on the rotating shaft (27), a first sponge sleeve (29) is fixedly arranged on the outer wall of the fixed roller (28), and the outer wall of the first sponge sleeve (29) is in movable contact with the arc-shaped opening (23).
2. The glue coating device for kraft paper bag processing according to claim 1, characterized in that, A blocking plate (24) is fixedly arranged at the bottom of the glue storage tank (21), and a plurality of conical holes (25) are uniformly arranged on the blocking plate (24).
3. The glue coating device for kraft paper bag processing according to claim 1, characterized in that, A rotating roller (3) is rotatably arranged on the fixed frame (11), and a second sponge sleeve (31) is fixedly arranged on the rotating roller (3).
4. The glue coating device for kraft paper bag processing according to claim 1, characterized in that, A supporting roller (32) is rotatably arranged on the fixed frame (11), and the supporting roller (32) is located below the fixed roller (28) and vertically corresponds to the fixed roller (28).
5. The device for applying glue to Kraft paper bags according to claim 1, wherein The laminating mechanism (4) comprises a guide roller (41) and two first conveying rollers (42), the guide roller (41) is rotatably arranged at one end of the first U-shaped frame (12), the two first conveying rollers (42) are rotatably arranged at the other end of the first U-shaped frame (12), a first gear (43) is fixedly arranged at one end of each of the two first conveying rollers (42), and the two first gears (43) are meshed and connected.
6. The glue spreading device for processing kraft paper bags according to claim 5, wherein The laminating mechanism (4) further comprises two second conveying rollers (45) and two third conveying rollers (46), the two second conveying rollers (45) and the two third conveying rollers (46) are rotatably arranged on the inner wall of the second U-shaped frame (13), a second gear (48) is fixedly arranged at one end of each of the two second conveying rollers (45), the two second gears (48) are meshed and connected, a third gear (49) is fixedly arranged at one end of each of the two third conveying rollers (46), and the two third gears (49) are meshed and connected. One side of the second U-shaped frame (13) is fixedly installed with a second motor (5), a driving output end of the second motor (5) is fixedly connected with one end of a third conveying roller (46), one end of one of the third conveying rollers (46) and one end of a second conveying roller (45) are fixedly installed with a first synchronous wheel (51), two first synchronous wheels (51) are transmissionally installed with a first synchronous belt (52), one end of one of the second conveying rollers (45) and one end of a first conveying roller (42) are fixedly installed with a second synchronous wheel (53), two second synchronous wheels (53) are transmissionally installed with a second synchronous belt (54).
7. The glue coating device for kraft paper bag processing according to claim 6, characterized in that, The inner wall of the second U-shaped frame (13) is rotationally installed with evenly distributed passive rollers (47), and the passive rollers (47) are located between the second conveying roller (45) and the third conveying roller (46).