A kind of embossing device of paper-plastic composite bag and its processing method

Abstract

The application discloses a kind of paper-plastic composite bag's coining device and its processing method, including rack, for placing paper composite layer roll first placing rack, for placing PET film roll second placing rack, with for PET film gluing gluing mechanism, for the coining mechanism of paper composite layer roll pressure pattern, and for the pressing mechanism of paper composite layer and PET film pressing, paper composite layer enters into pressing mechanism after passing through coining mechanism, PET film enters into pressing mechanism after gluing, and pressing mechanism is used to press paper composite layer and PET film.This application has the effect of reducing the damage of the aluminum plating layer of PET film in the graphic printing step of paper-plastic composite packaging bag production process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of paper-plastic composite bags, in particular to a paper-plastic composite bag embossing device and a processing method thereof. BACKGROUND

[0002] The paper-plastic composite bag is a packaging product with various packaging advantages, low cost, and exquisite printing. The product has the characteristics of anti-static, anti-ultraviolet, moisture-proof, oxygen-proof, light-proof, cold-resistant, oil-resistant, high-temperature-resistant, and fresh-keeping, and is widely used in life.

[0003] In the related art, the Chinese invention patent with the publication number CN104139567A discloses a scratch-resistant vacuum heat-insulating aluminum-plastic film packaging bag, which comprises a scratch-resistant vacuum heat-insulating aluminum-plastic film packaging bag, and a layer of PE film, a layer of aluminum foil, a layer of PET film with an aluminum plating layer, and a layer of nylon film are sequentially arranged from the inside to the outside. A layer of scratch-resistant coating is coated on the nylon film. The PE film, the aluminum foil, the aluminum foil and the PET film with the aluminum plating layer, and the PET film with the aluminum plating layer and the nylon film are all coated with an adhesive polyurethane adhesive layer.

[0004] In view of the above related technology, in the production process of the packaging bag, according to the requirements of the customer, the customer required pattern is often embossed on the packaging bag. The paper-plastic composite packaging bag comprises a paper composite layer and a PET composite film with an aluminum plating layer. However, when embossing the existing paper-plastic composite packaging bag, the aluminum plating layer of the PET film is often damaged, affecting the quality of the finished product. SUMMARY

[0005] In order to reduce the damage of the pattern embossing step to the aluminum plating layer of the PET film in the production process of the paper-plastic composite packaging bag, the present application provides a paper-plastic composite bag embossing device and a processing method thereof.

[0006] In the first aspect, the paper-plastic composite bag embossing device provided by the present application adopts the following technical scheme:

[0007] A paper-plastic composite bag embossing device, comprising a rack, a first placing rack for placing a paper composite layer roll, a second placing rack for placing a PET film roll, a gluing mechanism for gluing the PET film, an embossing mechanism for rolling a pattern on the paper composite layer, and a pressing mechanism for pressing the paper composite layer and the PET film, the paper composite layer enters the pressing mechanism after passing through the embossing mechanism, the PET film enters the pressing mechanism after gluing, and the pressing mechanism is used for pressing the paper composite layer and the PET film.

[0008] By adopting the above technical scheme, the paper composite layer first passes through the embossing mechanism, and after the pattern on the paper composite layer is completed, the paper composite layer enters the pressing mechanism to be pressed with the PET film that has completed glue coating, thereby reducing damage to the aluminum plating layer of the PET film in the pattern embossing step in the paper-plastic composite packaging bag production process, and improving product quality.

[0009] Preferably, the embossing mechanism comprises fixed seats fixedly connected to both sides of the rack, first sliding grooves and second sliding grooves are formed in the fixed seats, first sliding seats are slidingly arranged in the first sliding grooves, second sliding seats are slidingly arranged in the second sliding grooves, a pressing roller for rolling and pressing a pattern on the paper composite layer is arranged between the two first sliding seats, the pressing roller is rotatably arranged on the first sliding seat, a contact roller is arranged between the two second sliding seats, the contact roller is rotatably arranged on the second sliding seat, the paper composite layer passes between the pressing roller and the contact roller, a pressing spring for pushing the second sliding seat towards the first sliding seat is arranged in the second sliding seat, and an adjusting assembly for adjusting the distance between the first sliding seat and the second sliding seat is arranged on the fixed seat.

[0010] By adopting the above technical scheme, the first sliding seat is slidingly arranged in the first sliding groove, the pressing roller is rotatably arranged on the first sliding seat, the second sliding seat is slidingly arranged in the second sliding groove, and the contact roller is rotatably arranged on the second sliding seat. When the pressing roller and the contact roller rotate, the pressing roller can stably roll and press a pattern on the paper composite layer under the elastic force of the pressing spring.

[0011] Preferably, a cross beam is arranged on the fixed seat, two ends of the cross beam are fixedly connected to the two fixed seats, respectively, the adjusting assembly comprises a transverse rod arranged between the two fixed seats, two ends of the transverse rod are fixed to the two first sliding seats, respectively, an adjusting rod is arranged on the transverse rod, the adjusting rod passes through the cross beam, an adjusting ring is rotatably arranged on the cross beam, the adjusting ring is threadedly connected to the adjusting rod, and a driving assembly for driving the adjusting ring to rotate is arranged on the cross beam.

[0012] By adopting the above technical scheme, in the continuous embossing process of the pressing roller, the pressing roller will be worn, so that the pressure of the pressing roller on the paper composite layer is reduced, thereby reducing the clarity of the pattern printing. The adjusting ring is rotatably arranged on the cross beam, the adjusting ring is threadedly connected to the adjusting rod, when the driving assembly drives the adjusting ring to rotate, the adjusting rod can drive the first sliding seat to slide towards the second sliding seat through the transverse rod, so that the pressing spring returns to the previous compressed state, thereby returning the pressing roller and the contact roller to the previous pressure on the paper composite layer, so that the pattern on the paper composite layer is as clear as possible.

[0013] Preferably, the driving assembly comprises a motor fixedly connected to the cross beam, a first gear fixedly connected to an output shaft of the motor, and a second gear fixedly connected to the adjusting ring and sleeved on the adjusting ring.

[0014] By adopting the technical scheme, the first gear is engaged with the second gear, and when the motor is driven, the first gear can drive the adjusting ring to rotate through the second gear, thereby facilitating the adjustment of the adjusting rod.

[0015] Preferably, the second sliding groove is provided with a control assembly, the control assembly comprises a pressure sensor fixedly connected to a side wall of the second sliding groove away from the first sliding seat, a control seat fixedly connected to a side of the second sliding seat away from the first sliding seat, an installation groove formed in a side of the control seat close to the pressure sensor, a control block slidably arranged in the installation groove and abutting against the pressure sensor, and a thrust piece arranged in the installation groove and preventing the control block from sliding into the installation groove.

[0016] By adopting the technical scheme, when the impression roller is worn, the abutting spring can push the second sliding block towards the first sliding block, so that the pressure of the control block on the pressure sensor is reduced, and when the pressure is less than a specific value, the control module can automatically start the motor to drive the adjusting ring to rotate, so that the pressure between the impression roller and the abutting roller returns to the previous state, and when the pressure of the control block on the pressure sensor returns to the previous state, the control module automatically stops the motor.

[0017] Preferably, the thrust piece is a thrust spring, one end of the thrust spring abuts against a side of the installation groove away from the pressure sensor, and the other end of the thrust spring abuts against a side of the control block away from the pressure sensor.

[0018] By adopting the technical scheme, one end of the thrust spring abuts against a side of the installation groove away from the pressure sensor, and the other end of the thrust spring abuts against a side of the control block away from the pressure sensor, so that the control block can abut against the pressure sensor and keep pressure on the pressure sensor.

[0019] Preferably, a ring-shaped groove is formed in a top surface of the cross beam, a ring-shaped blocking groove is formed in an inner wall of the ring-shaped groove, a connecting ring is fixedly connected to the adjusting ring, a limiting ring is fixedly connected to the connecting ring, the connecting ring is rotatably arranged in the ring-shaped groove, and the limiting ring is rotatably arranged in the ring-shaped blocking groove.

[0020] By adopting the technical scheme, the connecting ring is rotationally arranged in the annular groove, and the limiting ring is rotationally arranged in the annular blocking groove, thereby preventing the adjusting ring from being separated from the cross beam, and enabling the adjusting ring to be stably rotationally arranged on the cross beam.

[0021] Preferably, the pressing mechanism comprises rotating seats fixedly connected to two sides of the rack, two pressing rollers are rotationally arranged on the rotating seats, and the paper composite layer passes between the two pressing rollers.

[0022] By adopting the technical scheme, the paper composite layer passes between the two pressing rollers, and the pressing is performed on the PET film and the paper composite layer.

[0023] Preferably, the glue coating mechanism comprises a glue storage tank fixedly connected to one side of the rack and connecting seats fixedly connected to two sides of the rack, a row of brushes that abut against the PET film are fixedly connected to the connecting seats, a plurality of through holes are formed in brush handles of the row of brushes, a conduit is fixedly connected to the brush handles of the row of brushes, a plurality of delivery holes that are in communication with the through holes are formed in the conduit, one end of the conduit is closed, and the other end of the conduit is in communication with the glue storage tank.

[0024] By adopting the technical scheme, the delivery holes in the conduit are in communication with the through holes in the brush handles of the row of brushes, glue in the glue storage tank can pass through the conduit and the brush handles to enable the row of brushes to coat glue on the PET film, and the pressing of the PET film and the paper composite layer is facilitated.

[0025] In a second aspect, the paper-plastic composite bag processing method provided by the application adopts the following technical scheme:

[0026] The paper-plastic composite bag processing method comprises the following steps: S1: installing the paper composite layer roll on the first placing rack and installing the PET film roll on the second placing rack; S2: passing the paper composite layer between the impression roller and the abutting roller, and then guiding the paper composite layer to pass between the two pressing rollers; and S3: guiding the PET film under the row of brushes, and then guiding the PET film between the two pressing rollers.

[0027] By adopting the technical scheme, the paper composite layer first passes through the pressing mechanism, and then passes through the pressing mechanism together with the PET film after the pattern pressing on the paper composite layer is completed, thereby reducing damage to the aluminum plating layer of the PET film caused by the pattern pressing step in the production process of the paper-plastic composite packaging bag, and improving the product quality.

[0028] In summary, the application has at least one of the following beneficial technical effects:

[0029] 1. The paper composite layer first passes through the embossing mechanism, and after the pattern on the paper composite layer is pressed and combined, it enters the pressing mechanism to press with the PET film with completed glue coating, thereby reducing the damage to the aluminum plated layer of the PET film in the pattern embossing step in the production process of the paper-plastic composite packaging bag, and improving the product quality;

[0030] 2. The first sliding seat is slidingly arranged in the first sliding groove, the embossing roller is rotatably arranged on the first sliding seat, the second sliding seat is slidingly arranged in the second sliding groove, and the abutting roller is rotatably arranged on the second sliding seat. The paper composite layer passes between the embossing roller and the abutting roller, and when the embossing roller and the abutting roller rotate, the embossing roller can stably roll and print patterns on the paper composite layer under the elastic force of the pressing spring;

[0031] 3. In the continuous embossing process of the embossing roller, the embossing roller will be worn, so that the pressure of the embossing roller on the paper composite layer is reduced, thereby reducing the clarity of the pattern printing. The adjusting ring is rotatably arranged on the cross beam, and the adjusting ring is threadedly connected with the adjusting rod. When the driving assembly drives the adjusting ring to rotate, the adjusting rod can drive the first sliding seat to slide towards the second sliding seat through the horizontal rod, so that the pressing spring returns to the previous compressed state, thereby making the embossing roller and the abutting roller return to the previous pressure on the paper composite layer, so that the pattern on the paper composite layer can be as clear as possible. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the overall structure schematic diagram of the embossing device in the embodiment of the application.

[0033] Figure 2 is the cross-sectional view of the fixed seat and the cross beam in the embodiment of the application.

[0034] Figure 3 is Figure 2 is the enlarged view of part A in

[0035] Figure 4 is the cross-sectional view of the conduit and the brush in the embodiment of the application.

[0036] Explanation of reference numerals in the attached drawings: 1. Frame; 2. First placement frame; 3. Second placement frame; 4. Imprinting mechanism; 41. Fixed base; 411. First sliding groove; 412. Second sliding groove; 413. Crossbeam; 4131. Annular groove; 4132. Annular stop groove; 42. First sliding seat; 43. Second sliding seat; 44. Imprinting roller; 45. Abutting roller; 46. Abutting spring; 47. Adjusting assembly; 471. Horizontal rod; 472. Connecting rod; 473. Adjusting rod; 474. Adjusting ring; 475. Connecting ring; 476. Limiting ring; 48. Drive Components; 481, Electric motor; 482, First gear; 483, Second gear; 49, Control component; 491, Pressure sensor; 492, Control base; 4921, Mounting slot; 493, Control block; 494, Thrust component; 4941, Thrust spring; 495, Power supply; 496, Control module; 5, Glue application mechanism; 51, Connecting seat; 52, Drawer brush; 521, Through hole; 53, Glue storage tank; 54, Conduit; 541, Conveying hole; 6, Pressing mechanism; 61, Rotating seat; 62, Pressing roller; 7, Paper composite layer; 8, PET film. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0038] This application discloses an embossing apparatus for paper-plastic composite bags. (Refer to...) Figure 1 and Figure 2 As shown, the embossing device includes a frame 1, a first placement frame 2, a second placement frame 3, an embossing mechanism 4, an adhesive coating mechanism 5, and a pressing mechanism 6. The frame 1 is fixed to the ground, and the first placement frame 2 and the second placement frame 3 are fixed to the same side of the frame 1. The first placement frame 2 and the second placement frame 3 are arranged vertically. The paper composite layer 7 roll is rotatably mounted on the first placement frame 2, and the PET film 8 roll is rotatably mounted on the second placement frame 3.

[0039] Reference Figure 1 and Figure 2 As shown, the printing mechanism 4 includes a fixed base 41, a first sliding base 42, a second sliding base 43, an printing roller 44, an abutment roller 45, a pressure spring 46, an adjustment assembly 47, a drive assembly 48, and a control assembly 49. Two fixed bases 41 are mounted on the frame 1, vertically positioned on either side of the frame 1. Each of the two fixed bases 41 has a first sliding groove 411 and a second sliding groove 412 on its adjacent sides, with the first sliding groove 411 located above the second sliding groove 412.

[0040] Reference Figure 1 and Figure 2As shown, the first sliding seat 42 is provided with two, and the two first sliding seats 42 are vertically slidingly arranged in the two first sliding grooves 411 respectively. The second sliding seat 43 is also provided with two, and the two second sliding seats 43 are vertically slidingly arranged in the two second sliding grooves 412 respectively.

[0041] Referring to Figure 1 and Figure 2 As shown, the impression roller 44 is arranged between the two first sliding seats 42, and the impression roller 44 is rotationally arranged on the first sliding seat 42. The contact roller 45 is arranged between the two second sliding seats 43, and the contact roller 45 is rotationally arranged on the second sliding seat 43. The paper composite layer 7 passes between the impression roller 44 and the contact roller 45.

[0042] Referring to Figure 1 and Figure 2 As shown, the pressing spring 46 is arranged in the second sliding seat 43, one end of the pressing spring 46 abuts against the bottom surface of the second sliding seat 43, and the other end of the pressing spring 46 abuts against the bottom wall of the second sliding groove 412.

[0043] Referring to Figure 1 and Figure 2 As shown, the top of the fixed seat 41 is provided with a cross beam 413, and the two ends of the cross beam 413 are fixed to the top surfaces of the two fixed seats 41 respectively. The adjusting assembly 47 includes a transverse rod 471, two connecting rods 472, an adjusting rod 473 and an adjusting ring 474. The transverse rod 471 is arranged between the two fixed seats 41, and the length direction of the transverse rod 471 is parallel to the axis direction of the impression roller 44. The two connecting rods 472 are fixedly connected on the transverse rod 471, and the two connecting rods 472 are vertically fixedly connected to the bottom surface of the transverse rod 471, and the two connecting rods 472 are located at the two ends of the transverse rod 471 respectively. The bottoms of the two connecting rods 472 are fixedly connected to the two first sliding seats 42 respectively, and the transverse rod 471 is fixed to the first sliding seat 42 through the connecting rod 472.

[0044] Referring to Figure 1 and Figure 2 As shown, the adjusting rod 473 is arranged on the top surface of the transverse rod 471, and the bottom of the adjusting rod 473 is fixedly connected to the transverse rod 471. The adjusting rod 473 vertically passes through the cross beam 413. The adjusting ring 474 is rotationally arranged on the cross beam 413, the adjusting ring 474 is sleeved on the adjusting rod 473, and the adjusting ring 474 is threadedly connected with the adjusting rod 473.

[0045] Referring to Figure 1 and Figure 2As shown in the figure, the top surface of the crossbeam 413 is provided with an annular groove 4131, the inner wall of the annular groove 4131 is provided with an annular blocking groove 4132, the adjusting ring 474 is fixedly connected with a connecting ring 475, the connecting ring 475 is fixedly connected with a limiting ring 476, the connecting ring 475 is rotationally arranged in the annular groove 4131, and the limiting ring 476 is rotationally arranged in the annular blocking groove 4132.

[0046] Referring to Figure 1 and Figure 2 As shown in the figure, the driving assembly 48 comprises a motor 481, a first gear 482 and a second gear 483. The motor 481 is fixedly connected to the top surface of the crossbeam 413, the first gear 482 is fixedly connected to the output shaft of the motor 481, the second gear 483 is sleeved outside the adjusting ring 474, the second gear 483 is fixedly connected with the adjusting ring 474, and the first gear 482 is engaged with the second gear 483.

[0047] Referring to Figure 2 and Figure 3 As shown in the figure, the control assembly 49 comprises a pressure sensor 491, a control seat 492, a control block 493, a thrust member 494, a power supply 495 and a control module 496. The pressure sensor 491 is fixedly connected to the bottom wall of the second sliding groove 412, the control seat 492 is fixedly connected to the bottom surface of the second sliding seat 43, the bottom surface of the control seat 492 is provided with a mounting groove 4921, the control block 493 is vertically slidably arranged in the mounting groove 4921, and the bottom surface of the control block 493 abuts against the pressure sensor 491.

[0048] Referring to Figure 2 and Figure 3 As shown in the figure, the thrust member 494 is a thrust spring 4941, one end of the thrust spring 4941 abuts against the side surface of the mounting groove 4921 away from the pressure sensor 491, and the other end of the thrust spring 4941 abuts against the side surface of the control block 493 away from the pressure sensor 491. The power supply 495 and the control module 496 are both fixedly connected to the crossbeam 413, the power supply 495 is used for power supply of the motor 481, the control module 496 is used for processing of the pressure sensor 491 signal, and the control module 496 is used for control of the start and stop of the motor 481.

[0049] Referring to Figure 2 and Figure 3As shown, when the impression roller 44 is worn, the pressing spring 46 can push the second slider towards the first slider, so that the control block 493 reduces the pressure on the pressure sensor 491, and when the pressure is less than a certain value, the control module 496 can automatically start the motor 481, so that the motor 481 drives the adjusting ring 474 to rotate, so that the pressure between the impression roller 44 and the pressing roller 45 returns to the previous state, and when the control block 493 returns to the previous state. The pressure on the pressure sensor 491, the control module 496 automatically stops the motor 481.

[0050] Referring to Figure 1 and Figure 4 As shown, the gluing mechanism 5 includes a connecting seat 51, a brush 52, a glue tank 53 and a conduit 54. The connecting seat 51 is fixedly connected to the rack 1. The brush 52 is arranged between the two connecting seats 51. The two ends of the brush 52 are fixedly connected to the two connecting seats 51. The paper composite layer 7 is located above the brush 52. The PET film 8 is located below the brush 52. The bristles of the brush 52 are in contact with the top surface of the PET film 8.

[0051] Referring to Figure 1 and Figure 4 As shown, the glue tank 53 is fixedly connected to one side of the rack 1. A plurality of through holes 521 are formed in the brush handle of the brush 52. The conduit 54 is fixedly connected to the brush handle of the brush 52. The length direction of the conduit 54 is parallel to the length direction of the brush 52. A plurality of delivery holes 541 are formed in the conduit 54 and communicate with the through holes 521. The delivery holes 541 correspond to the through holes 521 one by one. One end of the conduit 54 is closed. The other end of the conduit 54 communicates with the glue tank 53.

[0052] Referring to Figure 1 and Figure 2 As shown, the pressing mechanism 6 includes a rotating seat 61 and a pressing roller 62. The rotating seat 61 is arranged on the rack 1. The two rotating seats 61 are fixedly connected to the two sides of the rack 1. The pressing roller 62 is arranged between the two rotating seats 61. The two pressing rollers 62 are arranged in an up-down distribution. The pressing roller 62 is rotatably arranged on the rotating seat 61. The paper composite layer 7 and the PET film 8 after gluing pass between the two pressing rollers 62. The pressing force of the two pressing rollers 62 presses the paper composite layer 7 and the PET film 8 after gluing.

[0053] The implementation principle of the paper-plastic composite bag impression device is that the paper composite layer 7 first passes through the impression mechanism 4. After the pattern impression on the paper composite layer 7 is completed, the paper composite layer 7 enters the pressing mechanism 6 and the PET film 8 after gluing for pressing. Thus, the damage to the aluminum plating layer of the PET film 8 in the pattern impression step in the paper-plastic composite bag production process is reduced, and the product quality is improved.

[0054] With the wear of the impression roller 44, the pressure of the impression roller 44 to the paper composite layer 7 is reduced, thus reducing the clarity of the pattern printing. When the impression roller 44 is worn, the abutting spring 46 can push the second sliding block to the direction close to the first sliding block, so that the control block 493 reduces the pressure to the pressure sensor 491. When the pressure is less than a certain value, the control module 496 can automatically start the motor 481, so that the motor 481 drives the adjusting ring 474 to rotate, so that the pressure between the impression roller 44 and the abutting roller 45 returns to the previous state. When the control block 493 returns to the previous state of the pressure to the pressure sensor 491, the control module 496 automatically stops the motor 481. When the motor 481 drives the adjusting ring 474 to rotate, the adjusting rod 473 can drive the first sliding seat 42 to slide to the direction close to the second sliding seat 43 through the transverse rod 471, so that the abutting spring 46 returns to the previous compression state, so that the impression roller 44 and the abutting roller 45 return to the previous pressure to the paper composite layer 7, so that the pattern on the paper composite layer 7 is as clear as possible.

[0055] The paper-plastic composite bag processing method disclosed by the embodiment of the present application comprises the following steps: S1: mounting the paper composite layer 7 roll on the first placing frame 2 and mounting the PET film 8 roll on the second placing frame 3; S2: passing the paper composite layer 7 between the impression roller 44 and the abutting roller 45, and then guiding the paper composite layer 7 to pass between the two compression rollers 62; S3: guiding the PET film 8 to the brush 52, and then guiding the PET film 8 to pass between the two compression rollers 62.

[0056] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An embossing device for paper-plastic composite bags, characterized in that: The paper composite layer (7) enters the pressing mechanism (6) after passing through the embossing mechanism (4), the PET film (8) enters the pressing mechanism (6) after being coated, and the pressing mechanism (6) is used for pressing the paper composite layer (7) and the PET film (8); The fixed seat (41) is provided with a first sliding groove (411) and a second sliding groove (412), the first sliding seat (42) is slidably arranged in the first sliding groove (411), the second sliding seat (43) is slidably arranged in the second sliding groove (412), the embossing roller (44) for rolling the pattern of the paper composite layer (7) is arranged between the two first sliding seats (42), the embossing roller (44) is rotatably arranged on the first sliding seat (42), the abutting roller (45) is arranged between the two second sliding seats (43), the abutting roller (45) is rotatably arranged on the second sliding seat (43), the paper composite layer (7) passes between the embossing roller (44) and the abutting roller (45), the pressing spring (46) for pushing the second sliding seat (43) towards the first sliding seat (42) is arranged in the second sliding seat (43), and the adjusting assembly (47) for adjusting the distance between the first sliding seat (42) and the second sliding seat (43) is arranged on the fixed seat (41); The fixed seat (41) is provided with a cross beam (413), the two ends of the cross beam (413) are fixedly connected to the two fixed seats (41), the adjusting assembly (47) comprises a transverse rod (471) arranged between the two fixed seats (41), the two ends of the transverse rod (471) are fixedly connected to the two first sliding seats (42), the adjusting rod (473) is arranged on the transverse rod (471), the adjusting rod (473) passes through the cross beam (413), the adjusting ring (474) is rotatably arranged on the cross beam (413), the adjusting ring (474) is threadedly connected with the adjusting rod (473), and the driving assembly (48) for driving the adjusting ring (474) to rotate is arranged on the cross beam (413); The driving assembly (48) comprises a motor (481) fixedly connected to the cross beam (413), a first gear (482) fixedly connected to an output shaft of the motor (481), a second gear (483) provided on the adjusting ring (474) and fixed to the adjusting ring (474), and the first gear (482) is engaged with the second gear (483). The second sliding groove (412) is provided with a control assembly (49), the control assembly (49) comprises a pressure sensor (491) fixedly connected to the side wall of the second sliding groove (412) away from the first sliding seat (42), a control seat (492) fixedly connected to the side of the second sliding seat (43) away from the first sliding seat (42), an installation groove (4921) formed in the side of the control seat (492) close to the pressure sensor (491), a control block (493) slidably arranged in the installation groove (4921) and abutting against the pressure sensor (491), and a thrust member (494) arranged in the installation groove (4921) and preventing the control block (493) from sliding into the installation groove (4921), wherein the cross beam (413) is provided with a power supply (495) for supplying power to the motor (481) and a control module (496) for processing signals of the pressure sensor (491) and controlling start and stop of the motor (481).

2. A embossing device for paper-plastic composite bag according to claim 1, characterized in that: The thrust member (494) is a thrust spring (4941), one end of the thrust spring (4941) abutting against the side of the installation groove (4921) away from the pressure sensor (491), and the other end of the thrust spring (4941) abutting against the side of the control block (493) away from the pressure sensor (491).

3. A device for embossing a paper-plastic composite bag according to claim 2, characterized in that: An annular groove (4131) is formed in the top surface of the cross beam (413), an annular blocking groove (4132) is formed in the inner wall of the annular groove (4131), a connecting ring (475) is fixedly connected to the adjusting ring (474), a limiting ring (476) is fixedly connected to the connecting ring (475), the connecting ring (475) is rotatably arranged in the annular groove (4131), and the limiting ring (476) is rotatably arranged in the annular blocking groove (4132).

4. A device for embossing a paper-plastic composite bag according to claim 2, characterized in that: The pressing mechanism (6) comprises rotating seats (61) fixedly connected to two sides of the rack (1), two pressing rollers (62) rotatably arranged on the rotating seats (61), and the paper composite layer (7) passes through between the two pressing rollers (62).

5. A device for embossing a paper-plastic composite bag according to claim 4, characterized in that: The gluing mechanism (5) comprises a glue storage tank (53) fixedly connected to one side of the frame (1) and connecting seats (51) fixedly connected to both sides of the frame (1), the connecting seats (51) are fixedly connected with a row of brushes (52) which abut against the PET film (8), a plurality of through holes (521) are formed in the brush handle of the row of brushes (52), a conduit (54) is fixedly connected to the brush handle of the row of brushes (52), a plurality of conveying holes (541) which are in communication with the through holes (521) are formed in the conduit (54), one end of the conduit (54) is closed, and the other end of the conduit (54) is in communication with the glue storage tank (53).

6. A method of processing a paper-plastic composite bag, according to the embossing device for a paper-plastic composite bag according to claim 5, characterized by, The method comprises the following steps: S1: winding the paper composite layer (7) on the first placing frame (2) and winding the PET film (8) on the second placing frame (3); S2: passing the paper composite layer (7) between the impression roller (44) and the abutting roller (45), and then guiding the paper composite layer (7) to pass between the two pressing rollers (62); S3: guiding the PET film (8) to below the row of brushes (52), and then guiding the PET film (8) to between the two pressing rollers (62).

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