Hot melting device for bottom sewing of paper-plastic composite bag

Abstract

The utility model relates to the technical field of paper-plastic composite bag bottom sewing equipment, and discloses a hot melting device for bottom sewing of a paper-plastic composite bag, which comprises a bottom plate, limiting plates positioned at two ends of the top of the bottom plate and a lifting plate positioned on one side above the top of the bottom plate, the adjusting plates are arranged on the two sides of the tops of the two sets of limiting plates, and a servo motor is installed on one side of one end of the fixing frame. The lifting plate can be driven to be adjusted up and down through the air cylinder, adjustment of the lifting plate is more stable through the limiting rods, the movable rods and the lifting plate can move through the movable holes, the springs apply elastic force to the pressing blocks, the paper-plastic composite bags are pressed through the pressing blocks, and the electric heating pipes are powered on to heat the hot melting blocks. Then the paper-plastic composite bag is subjected to hot-melting bottom sewing through the hot-melting block, the clamping mechanism and the hot-melting mechanism are combined together, hot-melting bottom sewing can be conveniently conducted on the paper-plastic composite bag, and the bottom sewing effect on the paper-plastic composite bag is better.

Description

Technical Field

[0001] The utility model relates to the technical field of paper-plastic composite bag bottom sewing equipment, and specifically relates to a hot melt device for sewing the bottom of paper-plastic composite bags. Background Art

[0002] Paper-plastic composite bags are composed of plastic and kraft paper. Usually, the plastic layer is a flat filament woven cloth with polypropylene or polyethylene as the base material, and the kraft paper is a refined composite special kraft paper, which has the characteristics of high strength, good waterproof performance, and beautiful appearance. During the processing of paper-plastic composite bags, a hot melt device is required to thermally sew the bottom.

[0003] The application number CN202220948521.X discloses a hot melt device for sewing the bottom of paper-plastic composite bags, which relates to the technical field of paper-plastic composite bags, including a workbench. The upper surface of the workbench is fixedly connected with two stop rods...... Through the cooperation between the slide rail and the pulley, during the process of thermally sewing the bottom of the paper-plastic composite bag, the hot melt knife can move more smoothly. By setting the rubber pad, when fixing the paper-plastic composite bag, the outer surface of the paper-plastic composite bag will not be damaged; the hot melt mechanism and the pressing mechanism of this hot melt device are divided into two parts, resulting in poor synergistic use effect of the two groups of mechanisms, not being convenient for thermally sewing the bottom of the paper-plastic composite bag, and not being convenient for limiting the paper-plastic composite bag. During the conveying process, the paper-plastic composite bag is likely to shift, resulting in poor thermally sewing effect on the paper-plastic composite bag. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hot melt device for sewing the bottom of paper-plastic composite bags to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hot melt device for sewing the bottom of paper-plastic composite bags, including a bottom plate, limiting plates located at both ends of the top of the bottom plate, and a lifting plate located on one side above the top of the bottom plate. The bottom plate includes:

[0006] A fixed frame arranged on the top of the bottom plate; and

[0007] Adjusting plates arranged on both sides of the top of the two limiting plates.

[0008] Preferably, a servo motor is installed on one side of one end of the fixed frame. The output end of the servo motor is connected with a bidirectional threaded rod that penetrates into the adjusting plate. One side of the inner top of the fixed frame is provided with a support rod that penetrates into the adjusting plate. An arc-shaped groove is arranged on one side of the top of the bottom plate close to the limiting plate. Arc-shaped blocks are arranged at the middle positions of the bottoms of the two limiting plates.

[0009] Preferably, a fixing block is provided at the middle position of the bottom of the lifting plate. A hot-melt block is arranged inside the fixing block. A plurality of electric heating tubes are arranged at the bottom end inside the hot-melt block. A cylinder is arranged at the middle position of the top of the fixing frame close to one side of the lifting plate. Limit rods penetrating through to the top of the fixing frame are arranged at both ends of the top of the lifting plate. A pressing block is arranged at one side below the bottom of the lifting plate. Moving rods penetrating through to the top of the lifting plate are arranged at both ends of the top of the pressing block. Springs are arranged on the outer sides of the bottom ends of the moving rods located on the lifting plate.

[0010] Preferably, both ends of the bottom of the fixing frame are welded and connected to the top end of the bottom plate. The servo motor is detachably connected to the fixing frame through fixing bolts.

[0011] Preferably, a bearing is arranged at one end inside the fixing frame, and one end of the bidirectional threaded rod penetrates into the bearing. Threaded holes matching the bidirectional threaded rod are arranged at the top ends inside the two adjusting plates.

[0012] Preferably, both ends of the support rod are welded and connected to the inside of the fixing frame. Sliding holes are arranged at the top ends inside the other two adjusting plates, and the support rod penetrates into the sliding holes.

[0013] Preferably, the arc-shaped block is welded and connected to the limiting plate, and the arc-shaped block matches the arc-shaped groove. The arc-shaped block is movably connected to the bottom plate through the arc-shaped groove.

[0014] Preferably, an installation groove is arranged inside the fixing block. The hot-melt block is detachably connected to the fixing block through the installation groove. The cylinder is detachably connected to the fixing frame through fixing bolts.

[0015] Preferably, a connecting block is arranged at the middle position of the top of the lifting plate, and the telescopic end of the cylinder penetrates into the connecting block. Limit holes are arranged at both ends on one side of the top of the fixing frame, and the limit rods penetrate into the limit holes.

[0016] Preferably, moving holes are arranged at both ends inside the lifting plate, and the moving rods penetrate into the moving holes. The moving rods are movably connected to the lifting plate through the moving holes. Protrusions are arranged at the tops of the moving rods.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. The utility model can drive the lifting plate to adjust up and down through a cylinder, make the adjustment of the lifting plate more stable through a limiting rod, enable the movable rod to move with the lifting plate through a movable hole, apply an elastic force to the pressing block through a spring, press the paper-plastic composite bag through the pressing block, energize the electric heating tube to heat the hot-melt block, and then perform hot-melt bottom sewing on the paper-plastic composite bag through the hot-melt block. Combining the clamping mechanism and the hot-melt mechanism is convenient for performing hot-melt bottom sewing on the paper-plastic composite bag, and the bottom sewing effect on the paper-plastic composite bag is better;

[0019] 2. The utility model drives the bidirectional threaded rod to rotate through a servo motor. The bidirectional threaded rod cooperates with the threaded holes inside the two groups of adjusting plates, and can adjust the two groups of limiting plates towards each other. The other two groups of adjusting plates can slide with the support rod through the sliding holes, making the adjustment of the limiting plates more stable. The two groups of limiting plates can drive the two groups of arc-shaped blocks to adjust towards each other inside the arc-shaped grooves, which is convenient for limiting the paper-plastic composite bag, has a better conveying effect on the paper-plastic composite bag, and has a higher quality of hot-melt bottom sewing on the paper-plastic composite bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In all the drawings, similar elements or parts are generally marked with similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual proportion.

[0021] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the hot-melt mechanism of the utility model.

[0023] Figure 3 It is a cross-sectional view of the utility model.

[0024] Figure 4 It is a schematic diagram of the structure of the utility model.

[0025] In the figure: 1, bottom plate; 101, fixed frame; 2, limiting plate; 201, adjusting plate; 202, servo motor; 203, bidirectional threaded rod; 204, support rod; 205, arc-shaped groove; 206, arc-shaped block; 3, lifting plate; 301, fixed block; 302, hot-melt block; 303, electric heating tube; 304, cylinder; 305, limiting rod; 306, pressing block; 307, movable rod; 308, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figures 1-4 , an embodiment of a hot melt device for sewing the bottom of a paper-plastic composite bag provided by the present utility model: a hot melt device for sewing the bottom of a paper-plastic composite bag, including a bottom plate 1, limiting plates 2 located at both ends of the top of the bottom plate 1, and a lifting plate 3 located on one side above the top of the bottom plate 1. The bottom plate 1 includes: a fixing frame 101 provided on the top of the bottom plate 1; and adjusting plates 201 provided on both sides of the top of the two limiting plates 2.

[0031] Please pay special attention to Figure 1 , Figure 3 and Figure 4, a servo motor 202 is installed on one side of one end of the fixing frame 101. The output end of the servo motor 202 is connected to a bidirectional threaded rod 203 that penetrates into the inside of the adjusting plate 201. By driving the bidirectional threaded rod 203 to rotate through the servo motor 202, a support rod 204 that penetrates into the inside of the adjusting plate 201 is arranged on one side of the top end inside the fixing frame 101. Through the support rod 204, the adjustment of the adjusting plate 201 is more stable. An arc-shaped groove 205 is arranged on one side of the top of the bottom plate 1 close to the limiting plate 2. Arc-shaped blocks 206 are arranged at the middle positions of the bottoms of the two groups of limiting plates 2. Through the mutual cooperation of the arc-shaped groove 205 and the arc-shaped blocks 206, it is convenient to limit the paper-plastic composite bag.

[0032] Please refer particularly to Figure 1 , Figure 2 and Figure 3 , a fixing block 301 is arranged at the middle position of the bottom of the lifting plate 3. A hot-melt block 302 is arranged inside the fixing block 301. Multiple electric heating tubes 303 are arranged at the bottom end inside the hot-melt block 302. The hot-melt block 302 can be heated through the electric heating tubes 303. A cylinder 304 is arranged at the middle position of the top of the fixing frame 101 close to one side of the lifting plate 3. The lifting plate 3 can be adjusted up and down through the cylinder 304. Limit rods 305 that penetrate through the top of the fixing frame 101 are arranged at both ends of the top of the lifting plate 3. Through the limit rods 305, the adjustment of the lifting plate 3 is more stable. A pressing block 306 is arranged on one side below the bottom of the lifting plate 3. Moving rods 307 that penetrate through the top of the lifting plate 3 are arranged at both ends of the top of the pressing block 306. Springs 308 are arranged on the outer sides of the moving rods 307 at the bottom end of the lifting plate 3. By applying an elastic force to the pressing block 306 through the springs 308, it is convenient to press the paper-plastic composite bag.

[0033] Please refer particularly to Figure 1 , Figure 3 and Figure 4, both ends of the bottom of the fixing frame 101 are welded to the top end of the bottom plate 1. The servo motor 202 is detachably connected to the fixing frame 101 through fixing bolts to fixedly install the servo motor 202 and the fixing frame 101. One end inside the fixing frame 101 is provided with a bearing, and one end of the bidirectional threaded rod 203 penetrates into the bearing. The rotation of the bidirectional threaded rod 203 is made more stable through the bearing. Threaded holes matching the bidirectional threaded rod 203 are provided at the top ends inside the two adjusting plates 201, enabling the two adjusting blocks 201 to be adjusted towards each other. Both ends of the support rod 204 are welded to the inside of the fixing frame 101. Sliding holes are provided at the top ends inside the other two adjusting plates 201, and the support rod 204 penetrates into the sliding holes. The adjustment of the limiting plate 2 by the support rod 204 and the adjusting plate 201 is more stable. The arc-shaped block 206 is welded to the limiting plate 2 and matches the arc-shaped groove 205. The arc-shaped block 206 is movably connected to the bottom plate 1 through the arc-shaped groove 205. Through the mutual cooperation of the arc-shaped block 206 and the arc-shaped groove 205, it is convenient to limit the paper-plastic composite bag.

[0034] Please refer particularly to Figure 1 , Figure 2 and Figure 3 , an installation groove is provided inside the fixing block 301. The hot-melt block 302 is detachably connected to the fixing block 301 through the installation groove to fixedly install the hot-melt block 302 and the fixing block 301. The cylinder 304 is detachably connected to the fixing frame 101 through fixing bolts to fix the cylinder 304 on the top of the fixing frame 101. A connecting block is provided at the middle position of the top of the lifting plate 3, and the telescopic end of the cylinder 304 penetrates into the connecting block. The lifting block 3 is connected to the telescopic end of the cylinder 304 through the connecting block. Limit holes are provided at both ends on one side of the top of the fixing frame 101, and the limiting rod 305 penetrates into the limit holes. The adjustment of the lifting plate 3 by the limiting rod 305 is more stable. Moving holes are provided at both ends inside the lifting plate 3, and the moving rod 307 penetrates into the moving holes. The moving rod 307 is movably connected to the lifting plate 3 through the moving holes. The moving rod 307 can move relative to the lifting plate 3 through the moving holes. A convex block is provided at the top of the moving rod 307 to limit the moving rod 307.

[0035] Working principle: Before the use of the utility model, the hot-melt device is fixedly installed. When in use, the power supply is connected, and the paper-plastic composite bag is conveyed from the bottom plate 1 to the inside of the fixing frame 101. The bidirectional threaded rod 203 is driven to rotate by the servo motor 202. The bidirectional threaded rod 203 cooperates with the threaded holes inside the two groups of adjusting plates 201, and the two groups of limiting plates 2 can be adjusted towards each other. Through the sliding holes, the other two groups of adjusting plates 201 can slide with the support rod 204, making the adjustment of the limiting plates 2 more stable. The two groups of limiting plates 2 can drive the two groups of arc-shaped blocks 206 to adjust towards each other inside the arc-shaped grooves 205, facilitating the limitation of the paper-plastic composite bag, having a better conveying effect on the paper-plastic composite bag and a higher quality of hot-melt bottom sewing for the paper-plastic composite bag. The lifting plate 3 can be adjusted up and down by the air cylinder 304, and the adjustment of the lifting plate 3 is made more stable by the limiting rod 305. Through the movable holes, the movable rod 307 can move with the lifting plate 3, and the spring 308 applies an elastic force to the pressing block 306. The paper-plastic composite bag is pressed by the pressing block 306. The electric heating tube 303 is powered on to heat the hot-melt block 302, and then the paper-plastic composite bag is hot-melt bottom-sewn by the hot-melt block 302. Combining the clamping mechanism and the hot-melt mechanism together is convenient for hot-melt bottom-sewing the paper-plastic composite bag and has a better bottom-sewing effect on the paper-plastic composite bag.

[0036] The above are only the embodiments of the utility model, and common knowledge such as the specific structures and characteristics known in the solutions is not described in detail here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A hot melt device for seaming the bottom of a paper-plastic composite bag, characterized in that: The invention comprises a bottom plate (1), limit plates (2) located at two ends of the top of the bottom plate (1), and a lifting plate (3) located on one side above the top of the bottom plate (1), wherein the bottom plate (1) comprises: a fixing frame (101) disposed on the top of the bottom plate (1); and Adjustment plates (201) are arranged on both sides of the top of the two sets of limit plates (2); A servo motor (202) is installed on one side of one end of the fixing frame (101); the output end of the servo motor (202) is connected to a bidirectional threaded rod (203) penetrating into the interior of the adjustment plate (201); a support rod (204) penetrating into the interior of the adjustment plate (201) is arranged on one side of the top end of the fixing frame (101); an arc groove (205) is arranged on the top side of the bottom plate (1) close to the limit plate (2); arc blocks (206) are arranged at the middle positions of the bottoms of the two groups of limit plates (2); a fixing block (301) is arranged at the middle position of the bottom of the lifting plate (3); the inside of the fixing block (301) A hot melt block (302) is provided, and a plurality of groups of electric heating tubes (303) are provided at the bottom end of the hot melt block (302); a cylinder (304) is provided at the middle position of the top of the fixed frame (101) near one side of the lifting plate (3); both ends of the top of the lifting plate (3) are provided with limit rods (305) that penetrate through the top of the fixed frame (101); a pressure block (306) is provided on one side below the bottom of the lifting plate (3); both ends of the top of the pressure block (306) are provided with movable rods (307) that penetrate through the top of the lifting plate (3); and a spring (308) is provided on the outer side of the movable rod (307) located at the bottom end of the lifting plate (3).

2. A hot melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: Both ends of the bottom of the fixing frame (101) are welded to the top of the bottom plate (1), and the servo motor (202) is detachably connected to the fixing frame (101) via fixing bolts.

3. The hot-melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: A bearing is disposed at one end of the fixing frame (101), and one end of the bidirectional threaded rod (203) penetrates into the bearing. Threaded holes matching the bidirectional threaded rod (203) are disposed at the top ends of the two sets of adjustment plates (201).

4. The hot-melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: Both ends of the support rod (204) are welded to the inside of the fixing frame (101), and the top ends of the other two groups of adjustment plates (201) are provided with sliding holes, and the support rod (204) passes through the inside of the sliding holes.

5. The hot-melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: The arc block (206) is welded to the limiting plate (2), and the arc block (206) matches the arc groove (205). The arc block (206) is movably connected to the bottom plate (1) via the arc groove (205).

6. The hot-melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: The fixing block (301) is provided with a mounting groove inside, the hot melt block (302) is detachably connected to the fixing block (301) via the mounting groove, and the cylinder (304) is detachably connected to the fixing frame (101) via a fixing bolt.

7. The hot-melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: A connecting block is provided at the middle position of the top of the lifting plate (3), and the telescopic end of the cylinder (304) penetrates into the interior of the connecting block. Limiting holes are provided at both ends of one side of the top of the fixing frame (101), and the limiting rod (305) penetrates into the interior of the limiting hole.

8. The hot-melt device for seaming the bottom of a paper-plastic composite bag according to claim 1, characterized in that: Both ends of the lifting plate (3) are provided with movable holes, and the movable rod (307) penetrates into the movable hole. The movable rod (307) is movably connected to the lifting plate (3) through the movable hole, and a protrusion is provided on the top of the movable rod (307).

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