Glue scraping equipment and method for full-automatic bag making

Abstract

The invention provides glue scraping equipment and method for full-automatic bag making, and relates to the technical field of paper bag production, and the glue scraping equipment comprises a frame body, a first feeding mechanism, a second feeding mechanism, a glue coating-glue scraping unit and a discharging guide mechanism. According to the pre-gluing device, the gluing module, the slicking module, the release paper compounding module and the output guiding module of the reinforced paper sheet are integrated and are in online linkage with the bag making handle machine, so that the technical bottlenecks that the production process of a traditional pre-gluing process is split, the efficiency is low and the quality is not uniform are fundamentally solved; the glue outlet piece is matched with the main-auxiliary scraping plate assembly which is provided with a unique V-shaped surrounding part and an elastic floating support, so that the glue liquid can be accurately and uniformly scraped into a glue layer with preset width and thickness; the elastic connection and leveling mechanism ensures that the bottom surface of the scraper is dynamically parallel to the running plane of the paper sheets, so that glue on each reinforcing paper sheet is consistent in shape and uniform in thickness, and the bonding firmness of the handle and the reliability of a finished bag are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of paper bag production technology, specifically to a glue-applying device and method for fully automated bag making. Background Technology

[0002] With increasing environmental awareness and the implementation of the "plastic restriction order," paper shopping bags are increasingly widely used in retail, catering, and gift packaging. To meet the demands of large-scale production, fully automated bag-making production lines have become the industry mainstream. In such production lines, the bag-making handle machine is a key downstream process device, responsible for firmly attaching the handle to the bag body. This process typically involves attaching a reinforcing paper piece to a specific location on the bag body (usually the inside) and securing the two ends of the handle rope between the reinforcing paper piece and the bag body; that is, during the fully automated operation of the bag-making handle machine, a continuous supply of reinforcing paper pieces is required.

[0003] Currently, there are two main conventional technical approaches in the industry for reinforcing paper coating adhesives.

[0004] The first type is the offline pre-coating process: using independent roller coating or scraper coating equipment, the reinforcing paper tape rolls are coated with adhesive and then covered with release paper to produce semi-finished tape rolls.

[0005] The second type is online assisted gluing: a simple glue tank or glue spraying device is set up next to the bag making handle machine to coat the individual reinforcing paper sheets on site.

[0006] However, offline pre-coating processes are suitable for coating paper with a wider width, followed by slitting into reinforcing paper sheets of appropriate width. They cannot be directly used with bag-making handle machines. Online auxiliary coating, with its spraying or scraping structure, makes it difficult to ensure uniform coating. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a glue-coating device and method for fully automated bag making, solving the problem that existing bag-making handle machines lack a glue-coating device that can be directly matched to continuously prepare reinforcing paper sheets.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A glue-scraping device for fully automatic bag making includes a frame, a first feeding mechanism, a second feeding mechanism, a glue-coating-scraping unit, and a discharge guiding mechanism; The first feeding mechanism and the second feeding mechanism are both installed on the frame and are used to provide reinforcing paper sheets and release paper sheets, respectively; The glue-applying and scraping unit is installed on the frame and located downstream of the first feeding mechanism, and is used to apply glue and scrape the reinforcing paper from the first feeding mechanism. The discharge guiding mechanism is installed downstream of the glue coating-scraping unit and is used to guide the glued reinforcing paper sheet and the release paper sheet from the second feeding mechanism to be composited and output to the bag making handle machine.

[0009] This invention provides a glue-applying device and method for fully automated bag making. It has the following beneficial effects: 1. This invention integrates the functions of gluing, smoothing, laminating release paper, and output guidance of reinforcing paper sheets into one unit, and links it with the bag making handle machine online, fundamentally solving the technical bottlenecks of fragmented production process, low efficiency, and uneven quality in traditional pre-coating process. And it has at least the following beneficial effects: Excellent and stable adhesive application quality: Through the cooperation of the adhesive dispensing part and the main and auxiliary scraper assembly with a unique V-shaped enclosure and elastic floating support, the adhesive can be accurately and evenly scraped into an adhesive layer of preset width and thickness; the elastic connection and leveling mechanism ensures the dynamic parallelism between the bottom surface of the scraper and the running plane of the paper, thereby ensuring that the adhesive shape and thickness on each reinforcing paper sheet are consistent, which greatly improves the firmness of the handle and the reliability of the finished bag.

[0010] Flexible adjustment and highly adaptable: The equipment integrates a width adjustment component and a height-adjustable installation mechanism. Through simple mechanical adjustment, it can quickly adapt to the needs of reinforcing paper sheets and bag types of different sizes and specifications, realizing flexible production and shortening changeover time.

[0011] Stable operation and convenient maintenance: The unique frame design provides a solid and reasonably laid-out installation foundation for each functional module; the leveling components of the glue scraping unit adopt magnetic quick-release connection, which is convenient for installation, disassembly and maintenance; the dual-wheel guide mechanism ensures smooth conveying. The whole set of equipment has a compact structure and good rigidity, which can meet the stability requirements of continuous high-speed production and is easy to maintain. Attached Figure Description

[0012] Figure 1 This is a model diagram of a glue-applying device for fully automated bag making proposed in this invention; Figure 2 This is a perspective view of a glue-applying device for fully automated bag making proposed in this invention; Figure 3 This is a front view of a glue-applying device for fully automated bag making proposed in this invention; Figure 4 This is a three-dimensional schematic diagram of the coating-scraping unit of a fully automated bag-making scraping device proposed in this invention; Figure 5 This is a perspective view of a scraping assembly for a fully automated bag-making equipment proposed in this invention. Figure 6This is a perspective view of the main scraper plate of a fully automated bag-making scraping device proposed in this invention. Figure 7 This is a perspective view of a leveling component for a fully automated bag-making adhesive scraping device proposed in this invention. Figure 8 This is a perspective view of the auxiliary scraper of a fully automated bag-making adhesive scraping device proposed in this invention; Figure 9 This is a perspective view of a dual-wheel guide system for a fully automated bag-making adhesive scraping device proposed in this invention.

[0013] The components include: 1. First feeding mechanism; 2. Discharge guiding mechanism; 201. Vertical frame; 202. Lower roller; 203. Upper roller; 204. Gap opening; 205. Bolt; 206. Swing roller; 207. Spring; 3. Second feeding mechanism; 4. Frame; 401. Main frame; 402. Heightening frame; 403. Mounting port; 404. Middle frame; 405. Support box; 406. Vertical frame; 407. First truss; 408. Second truss; 5. Glue application-scraping unit; 501. Mounting platform; 502. Glue dispensing component; 503. Flow valve assembly; 504. Connecting... 505. Angled frame; 505a. Secondary scraper; 505b. Connecting horizontal section; 505c. Inclined section; 506. Main scraper; 506a. V-shaped enclosure; 506b. Flat plate section; 506c. Inclined plate section; 506d. Connecting port; 506e. Lifting pad; 507. Leveling assembly; 507a. Connector; 507b. Rotating threaded cylinder; 507c. Downward threaded rod; 507d. Bayonet; 508. Width adjustment assembly; 508a. First adjusting block; 508b. Second adjusting block; 508c. Operating part; 508d. Bidirectional threaded rod. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example 1: like Figures 1-9 As shown, this embodiment of the invention provides a glue-scraping device for fully automatic bag making, used in the paper bag production process to continuously supply reinforcing paper sheets containing release paper and glue to the bag making handle machine; it specifically includes a frame 4, a first feeding mechanism 1, a second feeding mechanism 3, a glue-scraping unit 5, and a discharge guiding mechanism 2.

[0016] like Figure 3As shown, the frame 4 includes a main frame 401, and a heightening frame 402 is provided on the top of the main frame 401. The heightening frame 402 is used to install the first feeding mechanism 1, which consists of two guide rollers, one above the other.

[0017] A middle frame 404 is fixedly installed on the inner side of the main frame 401. The middle frame 404 is used to install the discharge guide mechanism 2. The discharge guide mechanism 2 includes a guide roller on the middle frame 404 and a double wheel guide mechanism located inside the mounting port 403. The double wheel guide mechanism is used to synchronously guide the reinforcing paper sheet and the release paper sheet, and put them together and convey them toward the guide roller of the discharge guide mechanism 2. After the direction is adjusted, they are directly conveyed to the bag making handle machine.

[0018] An installation port 403 is provided on one side of the main frame 401, and the double-wheel guide mechanism of the discharge guide mechanism 2 is fixedly installed on the inner side of the installation port 403. A support box 405 is provided on the side of the main frame 401, and a vertical frame 406 is connected to the top of the support box 405. A first truss 407 and a second truss 408 are installed on the side of the vertical frame 406. A release paper distribution plate is installed on the second truss 408, and three sets of guide rollers for adjusting the moving direction of the release paper are installed on the first truss 407.

[0019] like Figure 2 , Figure 3 As shown, the first feeding mechanism 1 and the second feeding mechanism 3 are located at the top and distributed to the left and right. The discharge guiding mechanism 2 is located below the first feeding mechanism 1. The double wheel guiding mechanism of the discharge guiding mechanism 2 synchronously guides the reinforcing paper and the release paper.

[0020] Specifically, the first feeding mechanism 1 and the second feeding mechanism 3 are both installed on the frame 4, and are used to provide reinforcing paper sheets and release paper sheets respectively; the gluing-scraping unit 5 is installed on the frame 4 and located downstream of the first feeding mechanism 1, and is used to apply glue and scrape the reinforcing paper sheets from the first feeding mechanism 1; the discharge guiding mechanism 2 is installed downstream of the gluing-scraping unit 5, and is used to guide the glued reinforcing paper sheets and the release paper sheets from the second feeding mechanism 3 to be composited and output to the bag making handle machine.

[0021] In this embodiment, the modules for coating, smoothing, laminating release paper, and output guidance of reinforcing paper are integrated into one unit and linked online with the bag making handle machine, fundamentally solving the technical bottlenecks of fragmented production process, low efficiency, and uneven quality in traditional pre-coating processes.

[0022] In one embodiment, the glue application-scraping unit 5 includes: a mounting platform 501, a glue dispensing component 502, and a scraper assembly.

[0023] like Figure 4As shown, the mounting platform 501 is mounted on the frame 4 via a height-adjustable side frame. The height-adjustable side frame includes two plates, upper and lower, which are fixed together by a sliding hole-bolt structure. The glue outlet 502 is located at the bottom of the mounting platform 501. Its glue inlet is connected to a flow valve group 503 for controlling the glue flow rate. An external glue supply unit for pneumatic conveying / screw conveying / pump conveying is provided, which is connected to the glue inlet of the flow valve group 503 through a pipe. During use, the flow rate of the glue is controlled by the flow valve group 503, and the glue is output from the bottom end of the glue outlet 502. The glue forms a strip-shaped accumulation of glue on the moving reinforcing paper.

[0024] like Figure 4 , Figure 5 As shown, the scraper assembly includes a main scraper 506 and a secondary scraper 505. The secondary scraper 505 is connected to the bottom of the mounting platform 501 via a connecting bracket 504, with its scraping nozzle facing away from the outlet of the glue dispensing component 502. The scraping nozzle of the main scraper 506 faces the outlet of the glue dispensing component 502 and is arranged crosswise with the secondary scraper 505. The middle part of the secondary scraper 505 is provided with a raised opening 505c for the reinforcing paper sheet after glue application to pass through. The bottom surfaces of the main scraper 506 and the secondary scraper 505 are flush, and a raised pad 506e is provided below it to form a predetermined gap with the surface of the reinforcing paper sheet.

[0025] During installation, first adjust the height of the mounting platform 501 appropriately so that the adhesive applicator 502 is slightly higher than the horizontally moving reinforcing paper. The lifting pad 506e at the bottom of the main scraper 506 rests against the flat surface, thereby forming a gap of a certain thickness between the bottom of the main scraper 506 and the top surface of the reinforcing paper. This gap is the thickness of the adhesive layer. The intersection of the main scraper 506 and the auxiliary scraper 505 is the edge position for applying adhesive. The intersecting main scraper 506 and the auxiliary scraper 505 have two intersection points, which limits the width of the adhesive application and makes it correspond to the width of the reinforcing paper.

[0026] During the glue application process, the reinforcing paper and the glue above pass through the raised opening 505c in the middle of the secondary scraper 505, and then the main scraper 506 scrapes the accumulated glue level.

[0027] In one embodiment, the connecting inclined frame 504 is an elastic sheet, which allows the main scraper 506 to float elastically and ensures that the bottom surface of the lifting pad 506e continuously abuts against the reference plane set on the frame 4 under the action of elastic preload.

[0028] This design ensures the stability of the main scraper 506 and the stability of the gap between the bottom of the main scraper 506 and the reinforcing paper, making the glue application more uniform.

[0029] In one embodiment, a leveling component 507 is also designed, which is connected between the mounting platform 501 and the main scraper 506. By adjusting the height of at least one point of the mounting platform 501, the bottom of the main scraper 506 is made parallel to the reference plane set on the frame 4.

[0030] like Figure 6 As shown, there are two lifting pads 506e, distributed near the front and on the left and right sides. When the inclined frame 504 is in action, the main scraper 506 may be tilted. By setting an additional pressing point that does not coincide with either of the two lifting pads 506e, the main scraper 506 can be adjusted to be horizontal based on the three-point leveling, which in turn strengthens the stability of the gap between the bottom of the main scraper 506 and the paper sheet.

[0031] In one embodiment, such as Figure 7 As shown, the leveling assembly 507 includes a connector 507a, a rotating threaded cylinder 507b, and a pressing threaded rod 507c arranged sequentially from top to bottom.

[0032] The connector 507a is detachably connected to the bottom of the mounting platform 501 by magnetic adsorption. The top of the rotating threaded cylinder 507b is rotatably connected to the connector 507a. The top of the pressing threaded rod 507c is threadedly engaged with the bottom of the rotating threaded cylinder 507b. Its bottom end is provided with a bayonet 507d for engaging or abutting with the top of the main scraper 506.

[0033] By rotating the threaded cylinder 507b, the user can adjust the downward threaded rod 507c downwards or upwards, so that the bottom end of the downward threaded rod 507c presses down or releases the adjustment point of the main scraper 506, thereby realizing the leveling operation of the main scraper 506. It is worth noting that the top of the connector 507a is magnetically connected to the bottom of the mounting platform 501, and its contact position can be adjusted arbitrarily to always ensure that the leveling component 507 is in a vertical state.

[0034] In one embodiment, such as Figure 6 As shown, the main scraper 506 is an integral or combined structure, its main body is centrally symmetrical, and includes: a V-shaped enclosure 506a, two flat plate parts 506b, two inclined plate parts 506c, and two lifting pads 506e.

[0035] The V-shaped enclosure 506a is located in the middle, with its opening facing the outlet of the dispensing part 502. Two flat plates 506b extend outward from both sides of the V-shaped enclosure 506a, and two inclined plates 506c extend outward from the outer sides of the two flat plates 506b.

[0036] The bottom end of the inclined plate 506c is provided with a connection port 506d for connecting with the auxiliary scraper 505. Two lifting pads 506e are respectively fixedly installed at the bottom ends of the two inclined plate portions 506c, and a channel for the reinforcing paper to pass through is formed between the two lifting pads 506e.

[0037] During the glue application process, the reinforcing paper passes through the channel formed between the two lifting pads 506e, and the bottom surfaces of the V-shaped enclosure 506a, the two flat plates 506b, and the two inclined plates 506c are used to smooth the glue.

[0038] The secondary scraper 505 is a one-piece molded structure, which includes: a connecting horizontal part 505a and two inclined parts 505b.

[0039] The connecting horizontal part 505a is located in the middle, and two inclined parts 505b are symmetrically arranged on both sides of the connecting horizontal part 505a. A raised opening 505c is provided below the connecting horizontal part 505a.

[0040] The inclined portion 505b corresponds to the connecting port 506d, so that the inclined portion 505b can be locked inside the connecting port 506d to form a cross connection structure. The width of the adhesive scraping is limited based on the position where the inclined portion 505b intersects with the connecting port 506d.

[0041] In one embodiment, the V-shaped enclosure 506a includes a straight plate segment and two symmetrical inclined plate segments on both sides of the straight plate segment; a width adjustment component 508 is also designed, which is connected between the two flat plate portions 506b of the main scraper 506 and is used to adjust the distance between the two flat plate portions 506b.

[0042] It is worth noting that the V-shaped enclosure 506a is a thin sheet structure. After the width adjustment component 508 adjusts the distance between the two flat plates 506b, the V-shaped enclosure 506a deforms, the overall length of the main scraper 506 changes, and the inclined portions 505b at both ends of the auxiliary scraper 505 also deform. This causes the intersection position of the main scraper 506 and the auxiliary scraper 505 to change, thereby achieving the purpose of slightly adjusting the adhesive application width. Generally, the adjustment range is limited to within 3 cm to avoid plastic deformation of the main scraper 506 and the auxiliary scraper 505.

[0043] In one embodiment, the width adjustment assembly 508 includes: a first adjustment block 508a, a second adjustment block 508b, a bidirectional threaded rod 508d, and an operating part 508c.

[0044] The first adjusting block 508a and the second adjusting block 508b are respectively fixedly connected to the two flat plate parts 506b. The two sections of the bidirectional threaded rod 508d with opposite directions of rotation are respectively threadedly engaged with the first adjusting block 508a and the second adjusting block 508b. The operating part 508c is fixed to the operating part 508c on the bidirectional threaded rod 508d.

[0045] The user operates the bidirectional threaded rod 508d by operating the control unit 508c to rotate, thereby adjusting the distance between the first adjusting block 508a and the second adjusting block 508b, which in turn drives the two flat plate parts 506b to adjust their distance.

[0046] In one embodiment, the dual-wheel guide mechanism includes a stand 201, a lower roller 202, an upper roller 203, a swing roller 206, and a spring 207.

[0047] The upright frame 201 is fixedly installed in the mounting opening 403. The lower roller shaft 202 is fixedly installed on the side of the upright frame 201 through the bearing seats at both ends. The upper roller shaft 203 is installed above the bearing seats of the lower roller shaft 202 through the bearing seats at both ends and is fixed by bolts 205. A gap 204 is formed between the upper roller shaft 203 and the lower roller shaft 202. The resulting composite structure of "reinforcing paper-adhesive layer-release paper" can be flattened when passing through the gap 204. The swing roller 206 is installed on the top of the upright frame 201 through a rotating shaft. The spring 207 is connected between the bearing seat of the swing roller 206 and the upright frame 201. The swing roller 206 has an elastic tendency to move outward, ensuring that the release paper is always in a taut state.

[0048] Example 2: A glue-applying method for fully automated bag making, using the glue-applying equipment described in Example 1, includes the following steps: Step S10, Material Feeding Step: The reinforcing paper rolls loaded on the paper feeder of the first feeding mechanism 1 are continuously pulled out and output as strips (or pre-cut shapes) of reinforcing paper sheets. Simultaneously, the release paper rolls loaded on the centrifugal paper feeder of the second feeding mechanism 3 are continuously pulled out and output as release paper sheets. Both are guided to subsequent workstations under set tension control.

[0049] Step S20, Applying Adhesive and Smoothing: The reinforcing paper sheet is guided to continuously pass through the working area below the glue application-scraping unit 5 at a constant speed. First, the flow rate of adhesive from the hot melt adhesive pump is precisely controlled by the flow valve assembly 503, causing it to be extruded from the outlet of the adhesive outlet 502 and fall onto the preset glue application area of ​​the reinforcing paper sheet (usually a specific part at both ends or in the middle of the paper sheet). Then, the reinforcing paper sheet carrying the strip of adhesive continues to move forward, and is smoothed by the scraper assembly consisting of the main scraper 506 and the auxiliary scraper 505, ensuring the stability of the adhesive layer thickness.

[0050] Step S30, Composite Step: The reinforcing paper sheet, which has already been coated and is still in its "open time," is joined with the release paper sheet transported from the bypass at the composite station downstream of the coating-coating unit 5. A dual-wheel guide mechanism precisely covers and presses the release paper's anti-stick surface onto the wet adhesive layer of the reinforcing paper sheet, thus forming a continuous composite tape with a "reinforcing paper sheet-adhesive layer-release paper" structure. This step protects the adhesive layer, preventing it from contaminating the equipment or prematurely adhering to dust.

[0051] Step S40, Output Step: The resulting continuous composite tape is conveyed and guided by the discharge guiding mechanism 2, and finally guided and output to the patching station entrance of the downstream bag making handle machine with constant tension, achieving seamless connection.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A glue-applying device for fully automated bag making, characterized in that, It includes a frame (4), a first feeding mechanism (1), a second feeding mechanism (3), a glue application-scraping unit (5), and a discharge guiding mechanism (2); The first feeding mechanism (1) and the second feeding mechanism (3) are both installed on the frame (4) and are used to provide reinforcing paper and release paper, respectively; The glue-scraping unit (5) is installed on the frame (4) and located downstream of the first feeding mechanism (1) for applying glue and scraping the reinforcing paper from the first feeding mechanism (1). The discharge guiding mechanism (2) is installed downstream of the glue coating-scraping unit (5) and is used to guide the glued reinforcing paper sheet and the release paper sheet from the second feeding mechanism (3) to be composite and output to the bag making handle machine.

2. The adhesive scraping device for fully automatic bag making according to claim 1, characterized in that, The adhesive application-scraping unit (5) includes: Mounting platform (501), dispensing component (502), scraper assembly.

3. The adhesive scraping device for fully automatic bag making according to claim 2, characterized in that: The mounting platform (501) is mounted on the frame (4) via a height-adjustable side frame; The dispensing component (502) is located at the bottom of the mounting platform (501), and its inlet is connected to a flow valve assembly (503) for controlling the flow rate of the adhesive.

4. The adhesive scraping device for fully automatic bag making according to claim 3, characterized in that: The scraper assembly includes a main scraper (506) and a secondary scraper (505); the secondary scraper (505) is connected to the bottom of the mounting platform (501) via a connecting bracket (504), and its scraping opening faces away from the outlet of the glue dispensing component (502); the scraping opening of the main scraper (506) faces the outlet of the glue dispensing component (502) and is arranged crosswise with the secondary scraper (505); the secondary scraper (505) has a raised opening (505c) in the middle for the reinforcing paper sheet after glue application to pass through.

5. The adhesive scraping device for fully automatic bag making according to claim 4, characterized in that: The bottom surfaces of the main scraper (506) and the auxiliary scraper (505) are flush, and a lifting pad (506e) is provided below them to form a predetermined gap with the surface of the reinforcing paper.

6. The adhesive scraping device for fully automatic bag making according to claim 1, characterized in that, The connecting inclined frame (504) is an elastic sheet, which allows the main scraper (506) to float elastically and ensures that the bottom surface of the lifting pad (506e) continuously abuts against the reference plane set on the frame (4) under the action of elastic pre-tightening force.

7. The adhesive scraping device for fully automatic bag making according to claim 6, characterized in that: It also includes a leveling component (507) connected between the mounting platform (501) and the main scraper (506), which adjusts the height of at least one point of the mounting platform (501) so that the bottom of the main scraper (506) is parallel to the reference plane set on the frame (4).

8. A glue-applying device for fully automatic bag making according to claim 7, characterized in that: The leveling assembly (507) includes a connector (507a), a rotating threaded cylinder (507b), and a pressing threaded rod (507c) arranged sequentially from top to bottom. The connector (507a) is detachably connected to the bottom of the mounting platform (501) by magnetic adsorption.

9. A glue-applying device for fully automatic bag making according to claim 1, characterized in that: The top end of the rotating threaded cylinder (507b) is rotatably connected to the connector (507a); The top end of the downward threaded rod (507c) is threadedly engaged with the bottom of the rotating threaded cylinder (507b), and its bottom end is provided with a slot (507d) for engaging or abutting with the top of the main scraper (506).

10. A method for applying adhesive in fully automated bag making, characterized in that, The method using the scraping device according to any one of claims 1 to 9 comprises the following steps: Step S10, feeding step: Reinforcing paper sheets are continuously output from the first feeding mechanism (1), and release paper sheets are continuously output from the second feeding mechanism (3); Step S20, Glue application and smoothing step: Guide the reinforcing paper sheet to pass continuously through the glue application-scraping unit (5), apply the glue liquid to the preset area of ​​the reinforcing paper sheet through the glue dispensing part (502), and use the scraper assembly to scrape the glue liquid into a glue layer with uniform thickness and width. Step S30, Composite Step: On the adhesive layer surface of the coated reinforcing paper, the release paper is laminated to form a continuous composite tape; Step S40, Output Step: Guide the composite tape through the discharge guiding mechanism (3) and output it to the bag making handle machine.

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