Thin film longitudinal conveying structure and hot melt adhesive wrapping machine using same

Abstract

The utility model discloses a thin film longitudinal conveying structure and a hot melt adhesive wrapping machine using the same, the thin film longitudinal conveying structure comprises a machine base and two thin film conveying units, the two thin film conveying units are respectively arranged on the machine base, and the machine base is arranged at the thin film discharging end of the wrapping machine; the two film conveying units are symmetrically arranged on the two sides of the longitudinal guide pipe with the axis of the longitudinal guide pipe as the symmetry axis. The film longitudinal conveying structure adsorbs the packaging film through the conveying mechanism and the adsorption mechanism in the film conveying unit and drives the packaging film to move downwards, so that the conveying process of the packaging film is more stable, the situation that the packaging film is disturbed by air flow in the conveying process is reduced, formation of a subsequent wrapping structure is facilitated, and the packaging efficiency is improved. And the packaging effect of the hot melt adhesive is ensured.

Description

Technical Field

[0001] The utility model relates to the field of hot melt adhesive coating production equipment, in particular to a film longitudinal conveying structure and a hot melt adhesive wrapping machine using the same. Background Art

[0002] At present, after the production of hot melt adhesive is completed, a wrapping machine is generally used to bag the hot melt adhesive for storage, and then the bagged hot melt adhesive is placed in a water tank to cool. After cooling, the bagged hot melt adhesive is transported to the storage table by a conveyor belt, and the staff packs the bagged hot melt adhesive at the storage table.

[0003] Existing wrapping machines include a film conveying mechanism. When wrapping hot melt adhesive, the film is conveyed through the film conveying mechanism. The film conveying mechanism includes a longitudinal guide tube, around which the film wraps and moves longitudinally, cooperating with subsequent structures to form a wrapping structure, thereby bagging the hot melt adhesive. However, the film is light and easily disturbed during the conveying process, affecting the subsequent wrapping structure and affecting the packaging quality of the hot melt adhesive. Utility Model Content

[0004] The purpose of the present invention is to provide a longitudinal film conveying structure and a hot melt adhesive wrapping machine using the same, so as to solve the problem of instability in the conveying process of the packaging film.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The present invention also provides a longitudinal film conveying structure, which is arranged on the longitudinal guide tube of the wrapping machine, and includes a machine base and two film conveying units, the two film conveying units are respectively arranged on the machine base, and the machine base is arranged at the film discharge end of the wrapping machine; the two film conveying units are symmetrically arranged on both sides of the longitudinal guide tube with the axis of the longitudinal guide tube as the symmetry axis;

[0007] The film conveying unit includes a conveying mechanism, a connecting seat and an adsorption mechanism; the conveying mechanism includes a transmission device, a driving wheel, a synchronous belt and a driven wheel; the transmission device is arranged on the connecting seat, the driving wheel is connected to the output end of the transmission device, the driven wheel is rotatably assembled on the connecting seat, and the synchronous belt is sleeved on the outer circumference of the driving wheel and the driven wheel;

[0008] The adsorption mechanism includes a negative pressure generating device and a negative pressure box, the negative pressure box is connected to the negative pressure generating device, and a cavity is provided inside the negative pressure box; the negative pressure box is arranged between the driving wheel and the driven wheel, and the side of the negative pressure box close to the longitudinal guide tube is provided with an air suction hole connected to the cavity; a plurality of through holes are provided at intervals on the surface of the synchronous belt; the side of the negative pressure box close to the longitudinal guide tube is tightly attached to the back of the synchronous belt.

[0009] In the film longitudinal conveying structure, the film conveying unit further includes a moving mechanism; the fixed end of the moving mechanism is arranged on the machine base, and the movable end of the moving mechanism is connected to the connecting seat and drives the connecting seat horizontally close to or away from the longitudinal guide tube.

[0010] In the film longitudinal conveying structure, the moving mechanism includes a driving device, a fixed end of the driving device is arranged on the machine base, and a driving end of the driving device is connected to the connecting base.

[0011] In the longitudinal film conveying structure, the moving mechanism also includes a fixed plate and a guide column; the connecting seat is provided with a sliding groove adapted to the guide column, the fixed plate is fixed to the machine base, one end of the guide column is connected to the fixed plate, and the other end of the guide column is inserted into the sliding groove, and the connecting seat is slidably assembled with the guide column through the sliding groove.

[0012] In the film longitudinal conveying structure, the adsorption mechanism further includes a negative pressure gauge, which is fixed to the outside of the negative pressure box, and a detection end of the negative pressure gauge is arranged in the cavity for detecting the air pressure in the cavity.

[0013] In the film longitudinal conveying structure, a concave cavity is provided on the outer periphery of the through hole, and the bottom surface of the concave cavity is in the shape of an elongated circular hole.

[0014] The utility model also provides a hot melt adhesive wrapping machine, which uses the above-mentioned film longitudinal conveying structure.

[0015] A technical solution in the present invention can have the following beneficial effects:

[0016] The longitudinal film conveying structure absorbs the packaging film through the conveying mechanism and the adsorption mechanism, and drives the packaging film to move downward, so that the conveying process of the packaging film is smoother, and the situation where the packaging film is disturbed by air flow during the conveying process is reduced, which is conducive to the formation of the subsequent wrapping structure and ensures the packaging effect of the hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of one embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the positional relationship between the adsorption mechanism and the longitudinal guide tube in one embodiment of the present utility model;

[0019] In the accompanying drawings: longitudinal guide tube 1, machine base 2, conveying mechanism 3, connecting base 4, adsorption mechanism 5, moving mechanism 6;

[0020] Driving wheel 31, synchronous belt 32, driven wheel 33; negative pressure generating device 51, negative pressure box 52, negative pressure gauge 53; driving device 61; fixing plate 62, guide column 63;

[0021] Through hole 321 and cavity 322 . DETAILED DESCRIPTION

[0022] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features without distinction of order or importance.

[0024] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] Please refer to Figure 1 and 2 The present invention provides a longitudinal film conveying structure, which is arranged on a longitudinal guide tube 1 of a wrapping machine, and includes a machine base 2 and two film conveying units. The two film conveying units are respectively arranged on the machine base 2, and the machine base 2 is arranged at the film discharge end of the wrapping machine; the two film conveying units are symmetrically arranged on both sides of the longitudinal guide tube 1 with the axis of the longitudinal guide tube 1 as the symmetry axis;

[0027] The film conveying unit includes a conveying mechanism 3, a connecting seat 4, and an adsorption mechanism 5; the conveying mechanism 3 includes a transmission device, a driving wheel 31, a synchronous belt 32, and a driven wheel 33; the transmission device is arranged on the connecting seat 4, the driving wheel 31 is in driving connection with the output end of the transmission device, the driven wheel 33 is rotatably assembled on the connecting seat 4, and the synchronous belt 32 is sleeved on the outer circumference of the driving wheel 31 and the driven wheel 33;

[0028] The adsorption mechanism 5 includes a negative pressure generating device 51 and a negative pressure box 52. The negative pressure box 52 is connected to the negative pressure generating device 51, and a cavity is provided inside the negative pressure box 52; the negative pressure box 52 is arranged between the driving wheel 31 and the driven wheel 33, and the negative pressure box 52 is provided with an air suction hole connected to the cavity on the side close to the longitudinal guide tube 1; a plurality of through holes 321 are provided at intervals on the surface of the synchronous belt 32; the negative pressure box 52 is close to the back of the synchronous belt 32 on the side close to the longitudinal guide tube 1.

[0029] The film conveying units are symmetrically arranged, with one film conveying unit located on one side of the longitudinal guide tube 1 of the wrapping machine, and the other film conveying unit located on the other side of the longitudinal guide tube 1 of the wrapping machine. The film conveying unit includes a conveying mechanism 3, a connecting seat 4, and an adsorption mechanism 5, wherein the conveying mechanism 3 includes a transmission device, a driving wheel 31, a synchronous belt 32, and a driven wheel 33; the surface of the synchronous belt 32 is provided with a plurality of through holes 321, and the back of the synchronous belt 32 is provided with a negative pressure box 52. The air in the cavity is extracted by the negative pressure generating device 51, so that a negative pressure is generated in the cavity. The negative pressure box 52 forms an air extraction zone on the side close to the longitudinal guide tube 1, and allows air to pass through the through holes 321 and the air suction hole in sequence into the cavity, thereby achieving the purpose of adsorbing the packaging film; at the same time, the transmission device drives the driving wheel 31 to rotate, and the driving wheel 31 drives the driven wheel 33 through the synchronous belt 32, so that the synchronous belt 32 drives the packaging film downward.

[0030] During the rotation of the synchronous belt 32, the through holes 321 on the surface of the synchronous belt 32 pass through the air extraction zone as the synchronous belt 32 moves. The section of the synchronous belt 32 passing through the air extraction zone obtains suction, thereby adsorbing the packaging film and driving the packaging film to move downward. Subsequently, the through holes 321 leave the air extraction zone as the synchronous belt 32 moves, causing the suction to disappear. At this time, the packaging film is prevented from rotating with the synchronous belt 32 due to the loss of suction in this section of the synchronous belt 32, thereby preventing the packaging film from being wrapped around the conveying mechanism 3.

[0031] The longitudinal film conveying structure absorbs the packaging film through the conveying mechanism 3 and the adsorption mechanism 5, and drives the packaging film to move downward, so that the conveying process of the packaging film is smoother, and the situation where the packaging film is disturbed by air flow during the conveying process is reduced, which is conducive to the formation of the subsequent wrapping structure and ensures the packaging effect of the hot melt adhesive.

[0032] The negative pressure generating device 51 is specifically a vacuum pump. The negative pressure generating device 51 is connected to the negative pressure box 52 through a pipeline to extract air from the negative pressure box 52.

[0033] Specifically, the film conveying unit further includes a moving mechanism 6 ; the fixed end of the moving mechanism 6 is arranged on the machine base 2 , and the movable end of the moving mechanism 6 is connected to the connecting seat 4 , and drives the connecting seat 4 horizontally close to or away from the longitudinal guide tube 1 .

[0034] The moving mechanism 6 drives the connecting base 4 to move horizontally, thereby moving the conveying mechanism 3 and the suction mechanism 5 horizontally toward or away from the longitudinal guide tube 1. When packaging film needs to be conveyed, the moving mechanism 6 drives the connecting base 4 horizontally toward the longitudinal guide tube 1, allowing the synchronous belt 32 to absorb the packaging film. When packaging film is not required, the moving mechanism 6 drives the connecting base 4 horizontally away from the longitudinal guide tube 1, moving the conveying mechanism 3 and the suction mechanism 5 away from the longitudinal guide tube 1.

[0035] With the above structure, the distance between the synchronous belt 32 and the longitudinal guide tube 1 can be adjusted by the moving mechanism 6, thereby controlling the distance between the two ends of the packaging film and the longitudinal guide tube 1. The staff can make adjustments according to actual conditions to make the packaging film more stable and adapt to the subsequent formation of packaging bags.

[0036] Furthermore, the moving mechanism 6 includes a driving device 61 , a fixed end of the driving device 61 is disposed on the machine base 2 , and a driving end of the driving device 61 is connected to the connecting base 4 .

[0037] In one embodiment of the present invention, the drive device 61 is specifically a pneumatic cylinder, which drives the connecting base 4 to move laterally by extending and contracting the cylinder, thereby moving the conveying mechanism 3 and the suction mechanism 5 away from the longitudinal guide tube 1. This structure is simple, and the cylinder output is stable, making the conveying mechanism 3 and the suction mechanism 5 more stable during movement.

[0038] Furthermore, the moving mechanism 6 also includes a fixed plate 62 and a guide column 63; the connecting seat 4 is provided with a sliding groove adapted to the guide column 63, the fixed plate 62 is fixed to the machine base 2, one end of the guide column 63 is connected to the fixed plate 62, and the other end of the guide column 63 is inserted into the sliding groove, and the connecting seat 4 is slidably assembled with the guide column 63 through the sliding groove.

[0039] With the above structure, the sliding groove and the guide column 63 are slidably assembled to limit the movement of the connecting base 4 in other directions, so that the connecting base 4 can only move horizontally, making the connecting base 4 more stable when moving. The fixing plate 62 plays the role of fixing the guide column 63.

[0040] Preferably, the adsorption mechanism 5 further includes a negative pressure gauge 53, which is fixed to the outside of the negative pressure box 52, and a detection end of the negative pressure gauge 53 is arranged in the cavity for detecting the air pressure in the cavity.

[0041] Negative pressure gauge 53 is used to monitor the air pressure within the cavity. Once the through-hole 321 has absorbed the packaging film, air cannot enter the cavity. At this point, negative pressure generating device 51 continues to extract air from the cavity, creating a negative pressure. The value displayed on negative pressure gauge 53 allows personnel to determine whether the synchronous belt 32 is absorbing the packaging film. When negative pressure gauge 53 displays "0," it indicates that the synchronous belt 32 is not absorbing the packaging film.

[0042] Optionally, a concave cavity 322 is provided on the outer periphery of the through hole 321 , and the bottom surface of the concave cavity 322 is in the shape of an elongated circular hole.

[0043] By adopting the above structure, the adsorption area of the packaging film is increased, the adsorption effect on the packaging film is better, and the packaging film can better follow the downward movement of the synchronous belt 32, thereby making the transportation of the packaging film more stable.

[0044] The utility model also provides a hot melt adhesive wrapping machine, which uses the above-mentioned film longitudinal conveying structure.

[0045] The hot melt adhesive wrapping machine adopts the above-mentioned longitudinal film conveying structure. Through the conveying mechanism 3 and the adsorption mechanism 5, the packaging film is adsorbed and driven to move downward, making the conveying process of the packaging film smoother and reducing the situation where the packaging film is disturbed by air flow during the conveying process, which is conducive to the formation of the subsequent wrapping structure and ensures the packaging effect of the hot melt adhesive.

[0046] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific embodiments of the present invention without inventive effort, and such equivalent variations or substitutions are encompassed within the scope of the claims of this application.

Claims

1. A film longitudinal conveying structure, provided on the longitudinal guide tube of a wrapping machine, characterized in that: The machine comprises a base and two film conveying units, wherein the two film conveying units are respectively arranged on the base, and the base is arranged at the film discharge end of the wrapping machine; the two film conveying units are symmetrically arranged on both sides of the longitudinal guide tube with the axis of the longitudinal guide tube as the symmetry axis; The film conveying unit includes a conveying mechanism, a connecting seat and an adsorption mechanism; the conveying mechanism includes a transmission device, a driving wheel, a synchronous belt and a driven wheel; the transmission device is arranged on the connecting seat, the driving wheel is connected to the output end of the transmission device, the driven wheel is rotatably assembled on the connecting seat, and the synchronous belt is sleeved on the outer circumference of the driving wheel and the driven wheel; The adsorption mechanism includes a negative pressure generating device and a negative pressure box, the negative pressure box is connected to the negative pressure generating device, and a cavity is provided inside the negative pressure box; the negative pressure box is arranged between the driving wheel and the driven wheel, and the side of the negative pressure box close to the longitudinal guide tube is provided with an air suction hole connected to the cavity; a plurality of through holes are provided at intervals on the surface of the synchronous belt; the side of the negative pressure box close to the longitudinal guide tube is tightly attached to the back of the synchronous belt.

2. A film longitudinal conveying structure according to claim 1, characterized in that: The film conveying unit further comprises a moving mechanism; a fixed end of the moving mechanism is arranged on the machine base, and a movable end of the moving mechanism is connected to the connecting seat and drives the connecting seat to horizontally approach or move away from the longitudinal guide tube.

3. A film longitudinal conveying structure according to claim 2, characterized in that: The moving mechanism includes a driving device, a fixed end of the driving device is arranged on the machine base, and a driving end of the driving device is connected to the connecting base.

4. A film longitudinal conveying structure according to claim 3, characterized in that: The moving mechanism also includes a fixed plate and a guide column; the connecting seat is provided with a sliding groove adapted to the guide column, the fixed plate is fixed to the machine base, one end of the guide column is connected to the fixed plate, and the other end of the guide column is inserted into the sliding groove, and the connecting seat is slidably assembled with the guide column through the sliding groove.

5. The film longitudinal conveying structure according to claim 1, characterized in that: The adsorption mechanism further includes a negative pressure gauge, which is fixed to the outside of the negative pressure box, and a detection end of the negative pressure gauge is arranged in the cavity for detecting the air pressure in the cavity.

6. A film longitudinal conveying structure according to claim 1, characterized in that: A concave cavity is provided on the outer periphery of the through hole, and the bottom surface of the concave cavity is in the shape of an elongated circular hole.

7. A hot melt adhesive wrapping machine, characterized in that: The hot melt adhesive wrapping machine uses the film longitudinal conveying structure as described in any one of claims 1 to 6.

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