Film conveying device for soft packaging bag production

Abstract

The utility model relates to soft packing bag production equipment technical field, concretely is a kind of film conveying device for soft packing bag production, it includes: rack and unwinding roller, the surface of rack is provided with guide roller, rack and unwinding roller are detachably connected by dismounting mechanism, the outside of rack is provided with the tension adjusting mechanism for adjusting the tension of film. By setting dismounting mechanism, the connecting shaft part of unwinding roller is axially limited by the cooperation of positioning frame and the positioning clamp of pressure state, and the connecting shaft part of unwinding roller is radially limited by the limiting frame that rotates to horizontal state, and then the quick radial positioning and release are realized by the rotation of limiting frame, the clamping and loosening of positioning clamp are controlled by electric push rod drive lock block, to realize the axial locking and release, the quick dismounting of unwinding roller is realized by the cooperative action of the two;By setting tension adjusting mechanism, it can dynamically adjust the position of floating roller.

Description

Technical Field

[0001] This utility model relates to the technical field of flexible packaging bag production equipment, specifically a film conveying device for flexible packaging bag production. Background Technology

[0002] Flexible packaging refers to packaging whose shape can change after the contents are filled or removed. Various bags, boxes, sleeves, and seals made of paper, aluminum foil, fiber, plastic film and their composites are all flexible packaging. In the production process of flexible packaging bags, rolls of plastic film need to be unrolled and continuously and smoothly transported to subsequent printing, lamination, bag making and other processes.

[0003] Existing film conveying devices typically include an unwinding roller, several guide rollers, and a traction roller. However, during the unwinding process, the film's inertial torque changes due to the continuous change in roll diameter, which can easily lead to fluctuations in film tension. Excessive tension can cause the film to stretch and deform or even break; insufficient tension can cause the film to loosen and wrinkle, seriously affecting the processing quality of subsequent processes. Furthermore, existing devices require the use of appropriate tools (such as an Allen wrench) to disassemble and replace the unwinding roller, which is laborious and inconvenient. Therefore, a film conveying device for flexible packaging bag production is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a film conveying device for the production of flexible packaging bags, so as to solve at least one technical problem existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A film conveying device for producing flexible packaging bags, comprising:

[0007] The frame and the unwinding roll are provided. The surface of the frame is provided with guide rollers. The frame and the unwinding roll are detachably connected by a disassembly and assembly mechanism. The outside of the frame is provided with a tension adjustment mechanism for adjusting the film tension.

[0008] The disassembly and assembly mechanism includes a positioning frame, a positioning clamp, a limiting frame, and a locking block;

[0009] The locking block in the inward-moving state is used to press the positioning clamp, and the positioning frame cooperates with the positioning clamp in the pressed state to axially limit the connecting shaft of the unwinding roller, and the limiting frame in the horizontal state is used to radially limit the connecting shaft of the unwinding roller.

[0010] Preferably, the disassembly and assembly mechanism further includes a base, an electric push rod, a connecting rod, and rollers;

[0011] The base is fixedly connected to one side of the frame, the electric push rod is fixedly installed on the outside of the limiting frame, the connecting rod is fixedly connected to the output end of the electric push rod, and the roller is rotatably connected to the outside of the positioning frame.

[0012] Preferably, the positioning frame is fixedly connected to the top of the base, and the positioning clamp is rotatably connected to the inner side of the positioning frame.

[0013] Preferably, the limiting frame is rotatably connected to the top of the positioning frame, and the locking block is slidably connected to the bent part of the limiting frame.

[0014] Preferably, the connecting rod is fixedly connected to the locking block, and the output end of the electric push rod after being energized is used to drive the locking block to move through the connecting rod.

[0015] Preferably, the roller contacts the surface of the unwinding roller connecting shaft in the positioned state, and the limiting frame rotated to a horizontal state abuts against the surface of the positioning clamp.

[0016] Preferably, the tension adjustment mechanism includes a chute, a carriage, a lead screw, a motor, a floating roller, and a detection roller;

[0017] The slide groove is formed on the inner side of the frame, the slide carriage is slidably connected to the inner side of the slide groove, the lead screw is rotatably connected to the inner side of the slide groove, the motor is fixedly installed in the inner cavity of the frame, the floating roller is rotatably connected to one side of the slide carriage, and the detection roller is rotatably connected to the surface of the frame.

[0018] Preferably, the slide and the lead screw are connected by a lead screw seat, the output shaft end of the motor is fixedly connected to the lead screw, and the output shaft of the motor after being energized is used to drive the slide to move up and down through the lead screw.

[0019] Preferably, the tension sensor on the surface of the detection roller is electrically connected to the motor via a controller, and the slide in the lifting state is used to adjust the height of the floating roller.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. By setting up a disassembly and assembly mechanism, the positioning frame cooperates with the positioning clamp in the pressure state to axially limit the connecting shaft of the unwinding roller, and the limiting frame rotated to the horizontal state to radially limit the connecting shaft of the unwinding roller. Then, the rotation of the limiting frame realizes rapid radial positioning and release. The locking block is driven by an electric push rod to control the clamping and loosening of the positioning clamp, thereby realizing axial locking and release. The two work together to realize the rapid disassembly and assembly of the unwinding roller.

[0022] 2. By setting up a tension adjustment mechanism, the position of the floating roller can be dynamically adjusted to continuously compensate for tension changes caused by factors such as changes in roll diameter and speed fluctuations. This maintains the stability of film tension throughout the unwinding process, effectively ensuring the constant film tension from full roll to empty roll, and avoiding problems such as film stretching deformation, breakage, and wrinkling caused by tension fluctuations. Attached Figure Description

[0023] Figure 1 This is a front view structural diagram of the present utility model.

[0024] Figure 2 This is a schematic diagram of the disassembly and assembly mechanism of this utility model.

[0025] Figure 3 This utility model Figure 2 A schematic diagram of structure A in the diagram.

[0026] Figure 4 This is a schematic diagram of the tension adjustment mechanism of this utility model.

[0027] In the diagram: 1. Frame; 2. Unwinding roller; 3. Assembly / disassembly mechanism; 301. Base; 302. Positioning frame; 303. Positioning clamp; 304. Limiting frame; 305. Electric push rod; 306. Connecting rod; 307. Roller; 308. Locking block; 4. Guide roller; 5. Tension adjustment mechanism; 501. Slide groove; 502. Slide carriage; 503. Lead screw; 504. Motor; 505. Floating roller; 506. Detection roller. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-4 An embodiment of a film conveying device for producing flexible packaging bags provided by this utility model:

[0033] A film conveying device for producing flexible packaging bags, comprising:

[0034] The frame 1 and the unwinding roller 2 are provided. The surface of the frame 1 is provided with a guide roller 4. The frame 1 and the unwinding roller 2 are detachably connected by a disassembly and assembly mechanism 3. The outer side of the frame 1 is provided with a tension adjustment mechanism 5 for adjusting the film tension.

[0035] The disassembly and assembly mechanism 3 includes a positioning frame 302, a positioning clamp 303, a limiting frame 304, and a locking block 308;

[0036] The locking block 308, which moves inward, is used to press the positioning clamp 303. The positioning frame 302, which cooperates with the positioning clamp 303 in the pressed state, is used to axially limit the connecting shaft of the unwinding roller 2. The limiting frame 304, which rotates to the horizontal state, is used to radially limit the connecting shaft of the unwinding roller 2.

[0037] The disassembly and assembly mechanism 3 also includes a base 301, an electric push rod 305, a connecting rod 306, and a roller 307;

[0038] The base 301 is fixedly connected to one side of the frame 1, the electric push rod 305 is fixedly installed on the outside of the limit frame 304, the connecting rod 306 is fixedly connected to the output end of the electric push rod 305, and the roller 307 is rotatably connected to the outside of the positioning frame 302. The above structural design enables the positioning frame 302 to cooperate with the positioning clamp 303 in the compressed state, and together realize the axial limiting and fastening of the connecting shaft of the unwinding roller 2, preventing its axial movement, and the unwinding roller 2 is completely fixed.

[0039] The positioning frame 302 is fixedly connected to the top of the base 301, and the positioning clamp 303 is rotatably connected to the inner side of the positioning frame 302. The above structural design makes the locking block 308, which moves inward, squeeze the positioning clamp 303. After being squeezed, the positioning clamp 303 will rotate around its connection point with the positioning frame 302.

[0040] The limiting frame 304 is rotatably connected to the top of the positioning frame 302, and the locking block 308 is slidably connected to the bent part of the limiting frame 304. The above structural design allows the locking block 308 to retract under the drive of the electric push rod 305, so that it is freed from the pressure on the positioning clamp 303.

[0041] In one preferred embodiment, the connecting rod 306 is fixedly connected to the locking block 308, and the output end of the electric push rod 305 after being energized is used to drive the locking block 308 to move through the connecting rod 306. The above structural design means that when the electric push rod 305 is activated, the output end of the electric push rod 305 pushes the locking block 308 to move inward through the connecting rod 306, and the locking block 308 moving inward will squeeze the positioning clamp 303.

[0042] In one preferred embodiment, the roller 307 contacts the surface of the connecting shaft of the unwinding roller 2 in the positioning state, and the limiting frame 304 rotated to the horizontal state abuts against the surface of the positioning clamp 303. The above structural design allows the connecting shaft of the unwinding roller 2 to rely on its own weight to make its surface contact the roller 307 on the positioning frame 302. The design of the roller 307 reduces friction, making the unwinding roller 2 rotate more smoothly in the future.

[0043] In one preferred embodiment, the tension adjustment mechanism 5 includes a chute 501, a carriage 502, a lead screw 503, a motor 504, a floating roller 505, and a detection roller 506;

[0044] A slide groove 501 is formed inside the frame 1. A slide 502 is slidably connected to the inside of the slide groove 501. A lead screw 503 is rotatably connected to the inside of the slide groove 501. A motor 504 is fixedly installed in the inner cavity of the frame 1. A floating roller 505 is rotatably connected to one side of the slide 502. A detection roller 506 is rotatably connected to the surface of the frame 1. This structural design allows the controller to command the motor 504 to rotate when the tension is too high, driving the lead screw 503 to rotate via the output shaft. The carriage 502 connected to the seat moves upward within the slide groove 501. The carriage 502 drives the floating roller 505 to rise. The rise of the floating roller 505 increases the wrap angle or path length of the film, thereby absorbing some of the excess tension and causing the overall tension to drop back to the set value. When the tension is too low, the controller commands the motor 504 to rotate in the opposite direction, driving the lead screw 503 to move the carriage 502 downward. The floating roller 505 then descends, tightening the path of the film, thereby replenishing the tension and increasing it to the set value.

[0045] In one preferred embodiment, the slide 502 is connected to the lead screw 503 via a lead screw seat, and the output shaft end of the motor 504 is fixedly connected to the lead screw 503. The output shaft of the energized motor 504 is used to drive the slide 502 to move up and down via the lead screw 503. The above structural design allows the motor 504 to be started, and the output shaft of the running motor 504 to drive the lead screw 503 to rotate. The rotating lead screw 503 then drives the slide 502 to move up and down.

[0046] In one preferred embodiment, a tension sensor disposed on the surface of the detection roller 506 is electrically connected to the motor 504 via a controller, and the slide 502 in the lifting state is used to adjust the height of the floating roller 505. The above structural design allows a tension sensor to be installed on the bearing seat of the detection roller 506. The tension of the film is converted into pressure or torque on the detection roller 506, which is detected in real time by the tension sensor and the detected tension signal is transmitted to the controller. The controller then compares the received real-time tension signal with the set value.

[0047] The working principle of this utility model is as follows: When the limiting frame 304 is in the open state (vertically raised), it provides space for the unwinding roller 2 to be inserted or removed, and the locking block 308 is retracted under the action of the electric push rod 305, so that it is freed from the pressure on the positioning clamp 303. At this time, the operator places the connecting shaft of the unwinding roller 2 on the support surface of the positioning frame 302. The connecting shaft of the unwinding roller 2 will rely on its own weight to make its surface contact the roller 307 on the positioning frame 302. The design of the roller 307 reduces friction, making the unwinding roller 2 rotate more smoothly in the subsequent rotation. Then, the operator rotates the limiting frame 304 from the open state to the horizontal state. The horizontal limiting frame 304 then constitutes a physical constraint, and its bent part will be stuck in the unwinding... At the shoulder of the connecting shaft of the winding roller 2, the radial limit of the unwinding roller 2 is achieved, preventing it from accidentally coming out of the working position. After the limit frame 304 rotates to the horizontal position, the electric push rod 305 is activated. The output end of the electric push rod 305 pushes the locking block 308 to move inward through the connecting rod 306. The locking block 308 moving inward will squeeze the positioning clamp 303. After being squeezed, the positioning clamp 303 will rotate around its connection point with the positioning frame 302, thereby clamping the connecting shaft of the unwinding roller 2 inward. The positioning frame 302 and the positioning clamp 303 in this compressed state cooperate to achieve axial limit and fastening of the connecting shaft of the unwinding roller 2, preventing its axial movement. The unwinding roller 2 is completely fixed, thereby realizing the quick assembly and disassembly of the unwinding roller 2.

[0048] During transport, the film bypasses the detection roller 506. A tension sensor is installed on the bearing housing of the detection roller 506. The tension of the film is converted into pressure or torque on the detection roller 506, which is detected in real time by the tension sensor. The detected tension signal is transmitted to the controller. The controller compares the received real-time tension signal with a set value. If the detected tension is too high (greater than the set value), it indicates that the film is too taut, posing a risk of breakage or deformation. If the detected tension is too low (less than the set value), it indicates that the film is too loose, posing a risk of wrinkling. When the tension is too high, the controller commands the electric... When the machine 504 rotates, it drives the lead screw 503 to rotate via the output shaft. The slide 502, which is connected to the lead screw 503 via the lead screw seat, moves upward in the slide groove 501. The slide 502 drives the floating roller 505 to rise. The rise of the floating roller 505 increases the wrap angle or path length of the film, thereby absorbing some of the excess tension and causing the overall tension to drop back to the set value. When the tension is too low, the controller commands the motor 504 to rotate in the opposite direction, driving the lead screw 503 to move the slide 502 downward. The floating roller 505 then descends, tightening the path of the film and thus replenishing the tension, increasing it to the set value.

[0049] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A film conveying device for producing flexible packaging bags, characterized in that, It includes: A frame (1) and an unwinding roller (2) are provided. A guide roller (4) is provided on the surface of the frame (1). The frame (1) and the unwinding roller (2) are detachably connected by a disassembly and assembly mechanism (3). A tension adjustment mechanism (5) for adjusting the tension of the film is provided on the outside of the frame (1). The disassembly and assembly mechanism (3) includes a positioning frame (302), a positioning clamp (303), a limiting frame (304), and a locking block (308); The locking block (308) in the inward moving state is used to press the positioning clamp (303), the positioning frame (302) cooperates with the positioning clamp (303) in the pressed state to axially limit the connecting shaft of the unwinding roller (2), and the limiting frame (304) in the horizontal state is used to radially limit the connecting shaft of the unwinding roller (2).

2. The film conveying device for producing flexible packaging bags according to claim 1, characterized in that: The disassembly and assembly mechanism (3) also includes a base (301), an electric push rod (305), a connecting rod (306), and a roller (307); The base (301) is fixedly connected to one side of the frame (1), the electric push rod (305) is fixedly installed on the outside of the limiting frame (304), the connecting rod (306) is fixedly connected to the output end of the electric push rod (305), and the roller (307) is rotatably connected to the outside of the positioning frame (302).

3. The film conveying device for producing flexible packaging bags according to claim 2, characterized in that: The positioning frame (302) is fixedly connected to the top of the base (301), and the positioning clamp (303) is rotatably connected to the inner side of the positioning frame (302).

4. The film conveying device for producing flexible packaging bags according to claim 1, characterized in that: The limiting frame (304) is rotatably connected to the top of the positioning frame (302), and the locking block (308) is slidably connected to the bent part of the limiting frame (304).

5. A film conveying device for producing flexible packaging bags according to claim 2, characterized in that: The connecting rod (306) is fixedly connected to the locking block (308), and the output end of the electric push rod (305) after being energized is used to drive the locking block (308) to move through the connecting rod (306).

6. The film conveying device for producing flexible packaging bags according to claim 2, characterized in that: The roller (307) contacts the surface of the connecting shaft of the unwinding roller (2) in the positioning state, and the limiting frame (304) rotated to the horizontal state abuts against the surface of the positioning clamp (303).

7. A film conveying device for producing flexible packaging bags according to claim 1, characterized in that: The tension adjustment mechanism (5) includes a slide rail (501), a slide frame (502), a lead screw (503), a motor (504), a floating roller (505), and a detection roller (506); The slide groove (501) is opened on the inner side of the frame (1), the slide (502) is slidably connected to the inner side of the slide groove (501), the lead screw (503) is rotatably connected to the inner side of the slide groove (501), the motor (504) is fixedly installed in the inner cavity of the frame (1), the floating roller (505) is rotatably connected to one side of the slide (502), and the detection roller (506) is rotatably connected to the surface of the frame (1).

8. A film conveying device for producing flexible packaging bags according to claim 7, characterized in that: The slide (502) and the lead screw (503) are connected by a lead screw seat. The output shaft end of the motor (504) is fixedly connected to the lead screw (503). After being powered on, the output shaft of the motor (504) is used to drive the slide (502) to move up and down through the lead screw (503).

9. A film conveying device for producing flexible packaging bags according to claim 7, characterized in that: The tension sensor on the surface of the detection roller (506) is electrically connected to the motor (504) via a controller, and the slide (502) in the lifting state is used to adjust the height of the floating roller (505).

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