Bag making machine capable of automatically switching multi-specification bag openings

By designing a bag-making machine with automatic switching of multiple bag opening specifications, the problems of inconvenient adjustment of the conveying structure and complex heat-sealing structure of existing bag-making machines have been solved. Automatic adjustment, quick replacement and multi-specification cutting have been achieved, improving production efficiency and applicability.

CN223972233UActive Publication Date: 2026-03-06JIANGSU MINGNAN HOUBO NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-11
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing bag making machines have inconvenient conveyor structures that require manual rotation and adjustment during production, complex heat sealing structures that are difficult to install, and limited applicability of single bag opening cutting devices.

Method used

A bag making machine with automatic switching of multiple bag opening specifications was designed, including an adjusting conveying device, a heat sealing device, and a multi-bag opening cutting device. It adopts electric adjustment, magnetic fixation, and hydraulic drive to realize automatic switching and quick replacement of heat sealing structure, and supports cutting bag openings of different sizes.

Benefits of technology

It improves the adjustment speed and applicability of bag making machines, and realizes automatic adjustment of conveying, quick change of heat sealing structure and multiple bag opening cutting, so as to meet the production needs of products of different specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a multi-specification bag mouth automatic switching bag making machine which comprises an installation frame structure, an adjusting conveying device, a heat sealing device structure replacing heat sealing structures and a multi-bag mouth cutting device. The bag making machine comprises a mounting frame structure, a heat sealing device structure is fixedly mounted on the surface of the mounting frame structure, a replacement heat sealing structure is fixedly connected to the surface of the heat sealing device structure in a butt joint mode, and a multi-bag-opening cutting device is fixedly mounted on the surface of the mounting frame structure. The distance is conveniently and electrically adjusted through the adjusting conveying device, conveyed materials are tightened, the adjusting speed of an existing device is increased, an existing heat sealing strip structure can be rapidly replaced through the heat sealing device structure and the replacement heat sealing structure, and when products of different sizes are produced, the products can be replaced in time, and production is not affected.
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Description

Technical Field

[0001] This utility model relates to the field of bag making machines, and in particular to a bag making machine with automatic switching of bag openings of multiple specifications. Background Technology

[0002] A bag-making machine is a machine that produces various plastic or other material packaging bags. Its processing range includes packaging bags of various sizes, thicknesses, and specifications made of plastic or other materials. Generally, plastic packaging bags are the main product, and various kinds of bags are produced for use in daily life, including food and clothing.

[0003] Existing bag making machines require manual rotation and adjustment of the conveying structure during production, which is very inconvenient. For example, the tension adjustment structure of the device is complicated to install and difficult to replace quickly. In addition, a single device only has a single bag opening cutting device, which has low applicability. Therefore, a bag making machine with automatic switching of multiple bag opening specifications is proposed. Utility Model Content

[0004] The main purpose of this utility model is to provide a bag making machine with automatic switching of multiple bag opening specifications, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bag making machine with automatic switching of multiple bag opening specifications includes an installation frame structure, an adjustable conveying device, a heat sealing device structure to replace the heat sealing structure, and a multi-bag opening cutting device. The adjustable conveying device is fixedly installed on the surface of the installation frame structure, the heat sealing device structure is fixedly installed on the surface of the installation frame structure, the heat sealing device structure is fixedly connected to the heat sealing structure, and the multi-bag opening cutting device is fixedly installed on the surface of the installation frame structure.

[0007] Preferably, the mounting frame structure includes a mounting bracket, a drive motor, an auxiliary roller, mounting holes, and an end conveyor belt. The drive motor is fixedly mounted on the surface of the mounting bracket, the output end of the drive motor is connected to the auxiliary roller, the mounting holes are fixedly opened on the surface of the mounting bracket, and the end conveyor belt is mounted on the surface of the mounting frame structure.

[0008] Preferably, the adjusting conveying device includes a fixed frame, an electric lifting rod, a retaining ring frame, a rotary motor, a docking hole, and a conveying roller. The electric lifting rod is fixedly connected to the surface of the fixed frame, and the retaining ring frame is fixedly connected to the output end of the electric lifting rod. The rotary motor is fixedly sleeved on the surface of the retaining ring frame, and the conveying roller is movably docked to the surface of the retaining ring frame. The conveying roller is fixedly docked to the output end of the rotary motor.

[0009] Preferably, the heat sealing device structure includes a connecting frame, a hydraulic device, a docking frame, and a docking slot. The hydraulic device is fixedly mounted on the surface of the connecting frame, the output end of the hydraulic device is fixedly connected to the docking frame, and a docking slot is fixedly provided on the surface of the docking frame.

[0010] Preferably, the replacement heat-sealing structure includes a sealing strip, a connecting guide strip, a magnetic block, a heating interface, and a heat-insulating handle. The connecting guide strip is fixedly provided on the surface of the sealing strip, the magnetic block is fixedly provided on the surface of the connecting guide strip, a heating interface is fixedly provided on one end of the sealing strip, and a heat-insulating handle is fixedly provided on one end of the sealing strip.

[0011] Preferably, the multi-bag opening cutting device includes a second docking frame, a second hydraulic device, a bag opening flat cutting device, a third hydraulic device, and a bag opening irregular shape cutting device. The second hydraulic device is fixedly installed on the surface of the second docking frame, and the output end of the second hydraulic device is fixedly connected to the bag opening flat cutting device. The third hydraulic device is fixedly installed on the surface of the second docking frame, and the output end of the third hydraulic device is fixedly connected to the bag opening irregular shape cutting device.

[0012] Preferably, the multi-bag opening cutting device includes a second docking frame fixedly connected to the mounting hole, a connecting frame of the heat sealing device structure fixedly connected to the mounting hole, a docking guide strip of the replacement heat sealing structure inserted and fixedly docked with the docking slot, and a fixing frame of the adjusting conveying device fixedly connected to the mounting hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model discloses a bag making machine with automatic switching of multiple bag opening specifications. It features an adjustable conveyor device for convenient electric adjustment of the distance, ensuring the conveyed material is taut and improving the adjustment speed of existing devices. A rotary motor drives the conveyor rollers to rotate, thus conveying the material onto the surface. Simultaneously, an electric lifting rod drives the retaining ring frame to rise, tightening the material between it and the auxiliary rollers. The machine incorporates a heat-sealing device structure and a replaceable heat-sealing structure, allowing for quick replacement of the existing heat-sealing strip structure. This enables timely replacement without affecting production when manufacturing products of different sizes. The replaceable heat-sealing structure is fixed using magnetic attraction and interlocking methods, and can be removed via an insulated handle during replacement. Heating is achieved by connecting heating wires to the heating interface. Multiple bag opening cutting devices can cut bag openings of different sizes and shapes, improving the device's applicability. When producing products of different sizes, either the flat bag opening cutting device or the irregular bag opening cutting device can be used individually. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a bag-making machine with automatic switching of multiple bag opening specifications according to this utility model.

[0016] Figure 2 This utility model relates to a bag-making machine with automatic switching of multiple bag opening specifications;

[0017] Figure 3 This utility model relates to a bag-making machine with automatic switching of multiple bag opening specifications;

[0018] Figure 4 This utility model relates to a bag-making machine with automatic switching of multiple bag opening specifications;

[0019] Figure 5 This utility model relates to a bag-making machine with automatic switching of multiple bag opening specifications;

[0020] Figure 6 This utility model relates to a bag-making machine with automatic switching of multiple bag opening specifications;

[0021] In the diagram: 1. Installation frame structure; 101. Mounting frame; 102. Drive motor; 103. Auxiliary roller; 104. Mounting hole; 105. End conveyor belt; 2. Adjustable conveying device; 201. Fixing frame; 202. Electric lifting rod; 203. Clamping ring frame; 204. Rotary motor; 205. Docking hole; 206. Conveying roller; 3. Heat sealing device structure; 301. Connecting frame; 302. Hydraulic device one; 303. Docking frame one; 304. Docking slot; 4. Replacement heat sealing structure; 401. Seal; 402. Docking guide strip; 403. Magnetic block; 404. Heated docking interface; 405. Heat-insulated handle; 5. Multi-bag opening cutting device; 501. Docking frame two; 502. Hydraulic device two; 503. Bag opening flat cutting device; 504. Hydraulic device three; 505. Bag opening irregular shape cutting device. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1-6 As shown, a bag-making machine with automatic switching of multiple bag opening specifications includes an installation frame structure 1, an adjusting conveying device 2, a heat-sealing device structure 3, a replacement heat-sealing structure 4, and a multi-bag opening cutting device 5. The adjusting conveying device 2 is fixedly installed on the surface of the installation frame structure 1, the heat-sealing device structure 3 is fixedly installed on the surface of the installation frame structure 1, the replacement heat-sealing structure 4 is fixedly connected to the surface of the heat-sealing device structure 3, and the multi-bag opening cutting device 5 is fixedly installed on the surface of the installation frame structure 1. The installation frame structure 1 and the adjusting conveying device 2 convey and tighten the material of its feeding device. The heat-sealing device structure 3 and the replacement heat-sealing structure 4 can be easily and quickly replaced, and the material is heat-sealed. The multi-bag opening cutting device 5 is equipped with multiple cutting settings and can be rotated for use as needed.

[0024] Furthermore, the mounting frame structure 1 includes a mounting bracket 101, a drive motor 102, an auxiliary roller 103, mounting holes 104, and an end conveyor belt 105. The drive motor 102 is fixedly mounted on the surface of the mounting bracket 101, and the output end of the drive motor 102 is connected to the auxiliary roller 103. The mounting holes 104 are fixedly opened on the surface of the mounting bracket 101, and the end conveyor belt 105 is mounted on the surface of the mounting frame structure 1. The drive motor 102 drives the auxiliary roller 103 to rotate, thereby conveying the material on the surface. The end conveyor belt 105 conveys the cut material, and a heat-sealing base plate and a cutting base plate are provided on the surface of the end conveyor belt 105 at the positions for heat sealing and cutting to avoid damage to the conveyor belt.

[0025] Furthermore, the adjusting conveying device 2 includes a fixed frame 201, an electric lifting rod 202, a retaining ring frame 203, a rotary motor 204, a docking hole 205, and a conveying roller 206. The electric lifting rod 202 is fixedly connected to the surface of the fixed frame 201, and the retaining ring frame 203 is fixedly connected to the output end of the electric lifting rod 202. The rotary motor 204 is fixedly sleeved on the surface of the retaining ring frame 203, and the conveying roller 206 is movably docked to the surface of the retaining ring frame 203. The output end of the rotary motor 204 is fixedly docked to the conveying roller 206.

[0026] Furthermore, the heat sealing device structure 3 includes a connecting frame 301, a hydraulic device 302, a docking frame 303, and a docking slot 304. The hydraulic device 302 is fixedly mounted on the surface of the connecting frame 301, and the output end of the hydraulic device 302 is fixedly connected to the docking frame 303. The docking slot 304 is fixedly opened on the surface of the docking frame 303. The hydraulic device 302 drives the docking frame 303 to repeatedly press down so that the product passing through it is heat-sealed by the seal strip 401.

[0027] Furthermore, the replacement heat-sealing structure 4 includes a sealing strip 401, a docking guide strip 402, a magnetic block 403, a heating docking interface 404, and a heat-insulating handle 405. The docking guide strip 402 is fixedly disposed on the surface of the sealing strip 401, the magnetic block 403 is fixedly disposed on the surface of the docking guide strip 402, the heating docking interface 404 is fixedly opened on one end surface of the sealing strip 401, and the heat-insulating handle 405 is fixedly disposed on one end surface of the sealing strip 401. The docking guide strip 402 and the magnetic block 403 are docked and fixed with the docking slot 304. When replacing, they can be pulled out by the heat-insulating handle 405. When heating, the heating wire is connected through the heating docking interface 404.

[0028] Furthermore, the multi-bag opening cutting device 5 includes a second docking frame 501, a second hydraulic device 502, a bag opening flat cutting device 503, a third hydraulic device 504, and a bag opening irregular shape cutting device 505. The second hydraulic device 502 is fixedly installed on the surface of the second docking frame 501, and the output end of the second hydraulic device 502 is fixedly connected to the bag opening flat cutting device 503. The third hydraulic device 504 is fixedly installed on the surface of the second docking frame 501, and the output end of the third hydraulic device 504 is fixedly connected to the bag opening irregular shape cutting device 505. The second hydraulic device 502 and the third hydraulic device 504 facilitate the downward pressing and cutting of the bag opening flat cutting device 503 and the bag opening irregular shape cutting device 505, and the bag opening flat cutting device 503 and the bag opening irregular shape cutting device 505 operate independently and can be adjusted as needed.

[0029] Furthermore, the multi-bag opening cutting device 5 includes a docking frame 501 fixedly connected to the mounting hole 104, a connecting frame 301 of the heat sealing device structure 3 fixedly connected to the mounting hole 104, a docking guide strip 402 of the replacement heat sealing structure 4 inserted and fixedly docked with the docking slot 304, and a fixing frame 201 of the adjusting conveying device 2 fixedly connected to the mounting hole 104; the entire device changes the adjustment method, improves the adjustment efficiency, and changes the docking structure of the heat sealing device so that it can be quickly replaced, and adds a cutting structure so that the device can perform targeted cutting.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bag making machine capable of automatically switching between different bag opening sizes, characterized in that: Including installation frame structure (1), adjust conveying device (2), heat sealing device structure (3) replace heat sealing structure (4) and multi-bag opening cutting device (5), the surface of installation frame structure (1) is fixedly installed with adjust conveying device (2), the surface of installation frame structure (1) is fixedly installed with heat sealing device structure (3), the surface of heat sealing device structure (3) is fixedly connected with replace heat sealing structure (4), the surface of installation frame structure (1) is fixedly installed with multi-bag opening cutting device (5).

2. The multi-specification bag mouth automatic switching bag making machine according to claim 1, characterized in that: The installation frame structure (1) includes a mounting frame (101), a drive motor (102), an auxiliary roller (103), a mounting hole (104) and a terminal conveying belt (105), the surface of the mounting frame (101) is fixedly provided with the drive motor (102), the output end of the drive motor (102) is connected with the auxiliary roller (103), the surface of the mounting frame (101) is fixedly provided with the mounting hole (104), and the surface of the installation frame structure (1) is provided with the terminal conveying belt (105).

3. A multi-specification bag mouth automatic switching bag making machine according to claim 2, characterized in that: The adjusting conveying device (2) includes a fixed frame (201), an electric lifting rod (202), a clasp holder (203), a rotary motor (204), a butt joint hole (205) and a conveying roller (206), the surface of the fixed frame (201) is fixedly connected with the electric lifting rod (202), the output end of the electric lifting rod (202) is fixedly connected with the clasp holder (203), the surface of the clasp holder (203) is fixedly sleeved with the rotary motor (204), the surface of the clasp holder (203) is movably connected with the conveying roller (206), and the output end of the rotary motor (204) is fixedly connected with the conveying roller (206).

4. The multi-specification bag mouth automatic switching bag making machine according to claim 3, characterized in that: The heat sealing device structure (3) includes a connecting frame (301), a hydraulic device (302), a butt joint frame (303) and a butt joint slot (304), the surface of the connecting frame (301) is fixedly provided with the hydraulic device (302), the output end of the hydraulic device (302) is fixedly connected with the butt joint frame (303), and the surface of the butt joint frame (303) is fixedly provided with the butt joint slot (304).

5. A multi-specification bag mouth automatic switching bag making machine according to claim 4, characterized in that: The replace heat sealing structure (4) includes a sealing strip (401), a butt joint guide strip (402), a magnetic attraction block (403), a heating butt joint port (404) and a heat insulation handle (405), the surface of the sealing strip (401) is fixedly provided with the butt joint guide strip (402), the surface of the butt joint guide strip (402) is fixedly provided with the magnetic attraction block (403), one end of the sealing strip (401) is fixedly provided with the heating butt joint port (404), and one end of the sealing strip (401) is fixedly provided with the heat insulation handle (405).

6. A multi-specification bag mouth automatic switching bag making machine according to claim 5, characterized in that: Said multi-bag mouth cutting device (5) includes butt joint frame two (501), hydraulic device two (502), bag mouth flat cutting device (503), hydraulic device three (504) and bag mouth special-shaped cutting device (505), the surface of butt joint frame two (501) is fixedly installed with hydraulic device two (502), the output end of hydraulic device two (502) is fixedly connected with bag mouth flat cutting device (503), the surface of butt joint frame two (501) is fixedly installed with hydraulic device three (504), and the output end of hydraulic device three (504) is fixedly connected with bag mouth special-shaped cutting device (505).

7. A multi-specification bag mouth automatic switching bag making machine according to claim 5, characterized in that: Said multi-bag mouth cutting device (5) includes butt joint frame two (501) and mounting hole (104) fixed connection, the connecting frame (301) of the heat sealing device structure (3) and mounting hole (104) fixed connection, the butt joint guide bar (402) of the replacement heat sealing structure (4) and butt joint slot (304) are inserted and fixed, and the fixed frame (201) of the adjusting conveying device (2) and mounting hole (104) fixed connection.