Valve pocket bottom reinforcement bonding apparatus

Abstract

The utility model discloses a kind of reinforced bonding equipment of valve bag bottom, it is related to valve bag production technical field.The utility model includes belt conveyor, glue storehouse, mounting block and bonding press roller, the two long sides of the top of belt conveyor rack are all fixed with limit strip, several mutually contacting sleeve blocks are arranged between two limit strips, the top of two limit strips is all fixed with mounting block, the top central of belt conveyor is provided with glue storehouse above, the bottom of glue storehouse is fixed with connecting plate symmetrically, the below between two connecting plates is rotatably connected with coating press roller, one mounting block is provided with bonding press roller on the side away from glue storehouse.The utility model is provided with belt conveyor, glue storehouse, mounting block and bonding press roller, solve the bonding range of valve bag bottom bonding equipment limited, easy to cause uneven coating, and after bonding, extrusion is not enough, affect the problem of bonding stability.

Description

Technical Field

[0001] This utility model belongs to the field of valve bag manufacturing technology, and in particular relates to a reinforcing bonding device for the bottom of a valve bag. Background Technology

[0002] Valve bags are a common and important form of packaging in the industrial packaging field, especially suitable for powdery and granular materials. Their core feature is a circular filling port similar to a "one-way valve," allowing for efficient filling via specialized equipment and automatic sealing based on material pressure, eliminating the need for sewing or additional sealing. This design not only significantly improves filling efficiency and automation but also provides excellent leak-proof and moisture-proof performance, effectively protecting product quality. The valve bag bottom bonding device is the core equipment on the valve bag production line for achieving bottom sealing. It uses folding, gluing, and pressing processes to firmly bond the bottom of the cylindrical bag blank, replacing traditional sewing. The core value of this device lies in ensuring the bottom's sealing performance, load-bearing strength, and flatness, thereby meeting the requirements of leak-proof, impact-resistant, and efficient stacking for powdery material packaging. However, the valve bag bottom bonding equipment still has the following drawbacks in actual use:

[0003] In the production process, the bonding equipment at the bottom of the valve bag directly sets the adhesive in the appropriate position and then bonds it. However, the bonding range of the adhesive is limited, and there is a tendency for overflow and uneven coating after bonding.

[0004] Secondly, in operation, the bonding equipment at the bottom of the valve bag needs to apply glue and then directly squeeze to the appropriate position at the bottom of the valve bag before outputting it to the subsequent production steps. However, simply folding and squeezing in one step can easily cause the bonding to be unreliable and affect the stability of the bonding. Utility Model Content

[0005] The purpose of this utility model is to provide a reinforced bonding device for the bottom of a valve bag. By setting up a belt conveyor, glue tank, mounting block and bonding pressure roller, it solves the problems of limited bonding range, uneven coating, and insufficient extrusion after bonding, which affect the bonding stability of the bonding device at the bottom of the valve bag.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a reinforced bonding device for the bottom of a valve bag, comprising a belt conveyor, an adhesive tank, mounting blocks, and bonding rollers. Limiting strips are fixed to the two long sides of the top of the belt conveyor frame. Several contacting sleeves are arranged between the two limiting strips. Mounting blocks are fixed to the top of each of the two limiting strips. The two mounting blocks are centrally symmetrically arranged around the top center of the belt conveyor from a top-down view. An adhesive tank is located above the center of the top of the belt conveyor, and connecting plates are symmetrically fixed to the bottom of the adhesive tank. A coating roller is rotatably connected between the two connecting plates below. A bonding roller is provided on the side of one of the mounting blocks away from the glue tank. A belt conveyor is used to transport the sleeve block containing the valve bag blank. Limiting strips are provided on both sides of the top of its frame to guide the movement of the sleeve block. The mounting block is symmetrically fixed on the limiting strips and is used to install the pressure block and pressure rod. The glue tank is located above the center of the belt conveyor and the coating roller is installed through the bottom connecting plate for temporary storage and application of glue. The bonding roller is located on the outside of one side of the mounting block and is used for final compaction and bonding of the bag bottom.

[0008] Furthermore, a drive assembly is fixed on one side of the belt conveyor, and the output end of the drive assembly is fixed to the input end of the belt conveyor. The sleeve is set on the top of the belt of the belt conveyor, and the drive assembly is installed on one side of the belt conveyor to provide power to it. The sleeve is fixed on the surface of the belt and moves with it to realize the continuous conveying of the bag blank.

[0009] Furthermore, a discharge solenoid valve is fixedly connected to the bottom center of the glue tank. The output end of the discharge solenoid valve is located above the coating roller. The coating roller is located on the top of the sleeve block. The bottom of the glue tank is equipped with a discharge solenoid valve to control the glue to be discharged onto the coating roller, which then evenly coats the glue onto the bonding area of ​​the bag blank on the top of the sleeve block.

[0010] Furthermore, external supports are fixed on both sides of the glue tank. The lower parts of the two external supports are fixed to both sides of the belt conveyor, respectively. The external supports are fixed on both sides of the glue tank, and their lower ends are connected to the frame of the belt conveyor to provide stable support for the glue tank.

[0011] Furthermore, each mounting block has a connection port on its upper edge near the belt conveyor. Two connecting columns are rotatably connected to the vertical surface of each connection port. A pressure block is fixed to the end of the connecting column away from the adhesive roller, and a pressure rod is fixed to the end of the connecting column near the adhesive roller. Both the pressure block and the pressure rod are located on the top of the sleeve block. The mounting block has a connection port with a rotatable connecting column inside, which connects the pressure block and the pressure rod respectively. The pressure block is used to initially fold the edge of the bag blank, while the pressure rod further compacts the glued area to achieve pre-bonding.

[0012] Furthermore, both ends of the adhesive roller are fixed with support plates, and the bottom ends of the two support plates are respectively fixed to the top of the two limiting strips. The adhesive roller is fixed to the limiting strips by the support plates at both ends, and performs final rolling on the bottom of the bag blank after gluing and pre-pressing to ensure a firm bond.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of limited bonding range and uneven coating caused by the bonding equipment at the bottom of the valve bag by setting up a belt conveyor and an adhesive tank. When one edge of the bottom of the valve bag blank pressed on the sleeve block moves to the bottom of the adhesive tank, the discharge solenoid valve is opened. The discharge solenoid valve outputs the adhesive from the adhesive tank to the pressed position on the bag blank. At the same time, the coating roller on the connecting plate rolls with the adhesive as it is output, and the adhesive falling on it rolls and moves to the squeezed part of the valve bag at the top of the sleeve block. This increases the width of the adhesive coating and makes it more evenly coated on the bonding position at the bottom of the valve bag, resulting in a larger bonding range for the bonding equipment at the bottom of the valve bag and preventing uneven coating.

[0015] This invention solves the problem of insufficient compression after bonding at the bottom of the valve bag, which affects the bonding stability, by setting up a belt conveyor, glue tank, mounting block, and bonding pressure roller. First, the edge of one side of the bag blank is compressed by the connecting column and pressure block. After glue is applied below the glue tank, the other side of the bottom of the valve bag is further compressed by the pressure block on another mounting block and the connecting column, and then by the connecting column and pressure rod. This initial compression of the bottom of the valve bag is achieved. After being conveyed by the belt conveyor, the valve bag is further conveyed to the bottom of the bonding pressure roller, where it is pressed against the bottom of the bag blank that has been initially bonded to the top of the mounting block for tight bonding. This ensures that the bottom of the valve bag is fully bonded and securely fastened. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional view of the assembly structure of a reinforcing adhesive device for the bottom of a valve bag;

[0018] Figure 2 This is a three-dimensional structural diagram of a belt conveyor;

[0019] Figure 3 This is a three-dimensional structural diagram of the glue tank;

[0020] Figure 4 This is a three-dimensional structural view of the mounting block;

[0021] Figure 5 This is a three-dimensional view of the adhesive roller structure.

[0022] Figure label:

[0023] 1. Belt conveyor; 101. Limit bar; 102. Sleeve block; 103. Drive assembly; 2. Glue tank; 201. Connecting plate; 202. Coating roller; 203. Discharge solenoid valve; 204. Outer bracket; 3. Mounting block; 301. Connection port; 302. Connecting column; 303. Pressure block; 304. Pressure rod; 4. Adhesive roller; 401. Support plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0025] Please see Figure 1-3 This utility model relates to a reinforced bonding device for the bottom of a valve bag, comprising a belt conveyor 1, an adhesive tank 2, mounting blocks 3, and bonding rollers 4. Limiting strips 101 are fixed to the two long sides of the top of the belt conveyor 1 frame. During operation, the belt conveyor 1 transports the valve bag blank onto the conveying surface via a mounting block 102. Several mutually contacting mounting blocks 102 are arranged between the two limiting strips 101. The mounting blocks 102 provide a transport function after the valve bag blank has been initially folded and then reversed. Mounting blocks 3 are fixed to the top of each of the two limiting strips 101, and the two mounting blocks 3 are centrally symmetrically arranged around the top center of the belt conveyor 1 from a top-down view. Mounting block 3 connects pressure block 303 and pressure rod 304 to it. Glue tank 2 is set above the center of the top of belt conveyor 1. Glue tank 2 transfers and transports glue and provides temporary storage for glue. Connecting plates 201 are symmetrically fixed at the bottom of glue tank 2. Connecting plates 201 connect coating rollers 202 together. Coating rollers 202 are rotatably connected between the two connecting plates 201. Adhesive roller 4 is set on the side of mounting block 3 away from glue tank 2. Adhesive roller 4 is set on the top of sleeve block 102 and further squeezes and tightens the bottom of valve bag that has been initially glued to the top of sleeve block 102, so that the bottom of valve bag is glued and tightened.

[0026] Specifically, a drive assembly 103 is fixed on one side of the belt conveyor 1. The output end of the drive assembly 103 is fixed to the input end of the belt conveyor 1. The sleeve block 102 is set on the top of the belt of the belt conveyor 1. The belt conveyor 1 is driven by the power generated by the drive assembly 103. The sleeve block 102 moves with the belt conveyor 1.

[0027] Furthermore, a discharge solenoid valve 203 is fixedly connected to the bottom center of the glue tank 2. The output end of the discharge solenoid valve 203 is located above the coating roller 202, which is located on the top of the sleeve block 102. The input end of the top of the glue tank 2 is connected to the glue conveying equipment. When the glue tank 2 is working, the glue is discharged onto the coating roller 202 after the discharge solenoid valve 203 is opened, and then coated onto the pressed side of the valve bag.

[0028] Furthermore, both sides of the glue tank 2 are fixed with external brackets 204. The lower parts of the two external brackets 204 are respectively fixed to the two sides of the belt conveyor 1. The glue tank 2 is fixedly supported on the frame of the belt conveyor 1 by the external brackets 204.

[0029] The operation process of this embodiment is as follows: During operation, when the bottom edge of the valve bag blank pressed on the sleeve block 102 moves to below the glue tank 2, the discharge solenoid valve 203 is opened. The discharge solenoid valve 203 outputs the glue in the glue tank 2 to the pressed position on the bag blank. At the same time, the coating roller 202 on the connecting plate 201 rolls with the glue as it is output, and moves to the squeezed part on the top of the valve bag of the sleeve block 102. This increases the width of the glue coating and makes it more evenly coated on the bottom of the valve bag where it needs to be bonded. Specific Implementation Example 2

[0030] Please see Figure 1-5 Based on the first specific embodiment, each mounting block 3 has a connection port 301 at the upper edge of the side near the belt conveyor 1. Two connecting posts 302 are rotatably connected to the vertical surface of each connection port 301. A pressure block 303 is fixed to the end of the connecting post 302 away from the adhesive pressure roller 4, and a pressure rod 304 is fixed to the end of the connecting post 302 near the adhesive pressure roller 4. Both the pressure block 303 and the pressure rod 304 are set on the top of the sleeve block 102. The mounting block 3 is connected to the mounting block 3 through the connection port 301 and rotatably connected to the mounting block 3 through the connecting post 302. The side of the bottom of the valve bag is initially folded by the pressure block 303 on the connecting post 302. When the pressure rod 304 rolls over further, the bottom of the valve bag is further bonded and pressed tightly.

[0031] Specifically, both ends of the bonding roller 4 are fixed with support plates 401. The bottom ends of the two support plates 401 are respectively fixed to the top of the two limiting strips 101. When the bonding roller 4 is working, it is supported on the limiting strips 101 by the support plates 401.

[0032] The operation process of this embodiment is as follows: During operation, by starting the drive component 103 on the belt conveyor 1, the belt of the belt conveyor 1 is driven to move. The valve bag blank, which has been reversed and pre-folded at the bottom, is put onto the sleeve block 102. After being conveyed to the end of the belt conveyor 1 away from the drive component 103, the sleeve block 102 is driven to move by the belt during the conveying process. After the sleeve block 102 moves to the mounting block 3, it is first installed by the mounting structure, and then squeezed by the connecting column 302 and the pressure block 303. After applying glue to one edge of the bag blank and passing under the glue tank 2, the other side of the bottom of the valve bag is squeezed by the pressure block 303 on another mounting block 3 and the connecting column 302, and further squeezed by the connecting column 302 and the pressure rod 304. This initially squeezes the bottom of the valve bag. After being conveyed by the belt conveyor 1, the valve bag is further conveyed to the bottom of the bonding roller 4 and pressed by the bonding roller 4 onto the bottom of the bag blank that has been initially bonded to the top of the sleeve block 102 for pressing and bonding, so that the bottom of the valve bag is fully bonded and secured.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A reinforcing adhesive bonding device for the bottom of a valve bag, comprising a belt conveyor (1), an adhesive tank (2), a mounting block (3), and an adhesive pressure roller (4), characterized in that: Limiting strips (101) are fixed at the two long sides of the top of the belt conveyor (1). Several contacting sleeves (102) are arranged between the two limiting strips (101). Mounting blocks (3) are fixed at the top of the two limiting strips (101). The two mounting blocks (3) are arranged symmetrically with respect to the top center of the belt conveyor (1) from a top view. A glue tank (2) is arranged above the center of the top of the belt conveyor (1). A connecting plate (201) is symmetrically fixed at the bottom of the glue tank (2). A coating roller (202) is rotatably connected between the two connecting plates (201) below. An adhesive roller (4) is arranged on the side of one mounting block (3) away from the glue tank (2).

2. The reinforcing adhesive bonding device for the bottom of a valve bag according to claim 1, characterized in that: A drive assembly (103) is fixed on one side of the belt conveyor (1), the output end of the drive assembly (103) is fixed to the input end of the belt conveyor (1), and the sleeve block (102) is set on the top of the belt of the belt conveyor (1).

3. The reinforcing adhesive bonding device for the bottom of a valve bag according to claim 1, characterized in that: The bottom center of the glue tank (2) is fixedly connected to a discharge solenoid valve (203), the output end of which is located above the coating roller (202), and the coating roller (202) is located on the top of the sleeve block (102).

4. The reinforcing adhesive bonding device for the bottom of a valve bag according to claim 1, characterized in that: Both sides of the glue tank (2) are fixed with external brackets (204), and the lower parts of the two external brackets (204) are respectively fixed to both sides of the belt conveyor (1).

5. The reinforcing adhesive bonding device for the bottom of a valve bag according to claim 3, characterized in that: The mounting block (3) has a connection port (301) on the upper edge of the side near the belt conveyor (1). Two connecting columns (302) are rotatably connected to the vertical surface of the connection port (301). A pressure block (303) is fixed at the end of the connecting column (302) away from the adhesive roller (4), and a pressure rod (304) is fixed at the end of the connecting column (302) near the adhesive roller (4). The pressure block (303) and the pressure rod (304) are both located on the top of the sleeve block (102).

6. The reinforcing adhesive bonding device for the bottom of a valve pocket according to claim 1, characterized in that: Both ends of the adhesive roller (4) are fixed with support plates (401), and the bottom ends of the two support plates (401) are respectively fixed to the top of the two limiting strips (101).

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