Simple roll changer
By designing a simplified roll changer, utilizing a two-station film roll transfer mechanism and a film-sealing device, the problems of complex structure and high cost of the roll changer in the FFS heavy film bag packaging machine are solved, realizing automated switching and heat sealing, and improving work efficiency and equipment reliability.
Patent Information
- Application Number
- CN202521912581.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-09-05
AI Technical Summary
The existing FFS heavy film bag packaging machine has a complex structure and high cost, and manual operation can easily lead to film roll breakage, resulting in low work efficiency.
A simple roll changer was designed, which adopts a two-station film roll transfer mechanism and a film splicing heat sealing device, combined with a cutter locking mechanism, a film pressing mechanism and a film roll offset detection component, to realize the automatic switching and heat sealing of new and old film rolls.
It simplifies the roll changing process, improves equipment reliability and efficiency, reduces equipment complexity and cost, avoids the risk of film roll tearing, and ensures neat cuts and sealing quality.
Smart Images
Figure CN224590325U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a simple roll changing machine, belonging to the field of packaging machinery. Background Technology
[0002] Currently, most FFS heavy film bag packaging machines on the market still use manual roll changing. After the old film is used up, a new film roll is installed, and the old and new film rolls are manually joined together with adhesive tape. This method is prone to tearing during the conveying of the film roll with adhesive tape and has low work efficiency. Patent document CN120172158A discloses a horizontal overlapping automatic film splicing device. Although this device can improve the automation level of roll changing and improve work efficiency, it requires close coordination between various mechanisms, and its structure is complex and costly. Utility Model Content
[0003] To address the technical problems of complex structure and high cost of existing FFS heavy film bag packaging machines' roll changing mechanisms, this utility model provides a simplified roll changing machine. It includes a two-station film roll transfer mechanism for horizontally transferring new and old film rolls left and right. The front of the two-station film roll transfer mechanism is equipped with a film-sealing device. The film-sealing device includes a frame, with a liftable pressing mechanism at the upper front end of the frame. The rear end of the pressing mechanism is hinged to the cylinder rod of a horizontal cylinder, and the cylinder body of the horizontal cylinder is hinged to the upper rear end of the frame. The horizontal cylinder drives the pressing mechanism. The mechanism moves horizontally back and forth. An operating table is provided below the pressing mechanism. A cutting groove and a heat-sealing groove are arranged horizontally in sequence on the operating table. A cutter is arranged facing upward in the cutting groove. The lower end of the cutter is connected to the slide of a rodless cylinder. The rodless cylinder is connected to the frame and drives the cutter to move left and right. A heat-sealing pad corresponding to the heat-sealing groove is provided on the pressing mechanism. A liftable heat-sealing mechanism is provided directly below the heat-sealing groove. A cutter locking mechanism is also provided at the lower end of the cutter. The cutter locking mechanism can lock and restrict the movement of the cutter.
[0004] The cutter locking mechanism includes support arms, which are symmetrically arranged on both sides of the lower end of the operating table. The support arms are hinged to the upper part of the swing arm. The upper end of the swing arm is connected by a connecting rod, and a tension spring is provided on the connecting rod. The upper end of the tension spring is connected to the lower end of the operating table. At least one side of the swing arm is also provided with a pressure roller assembly. The lower end of the pressure roller assembly is tangent to the upper end of the swing arm. The upper end of the pressure roller assembly passes through the operating table and is higher than the upper surface of the operating table. The lower end of the swing arm can lock and restrict the movement of the cutter in the free state. When the pressing mechanism descends, it can drive the pressure roller assembly to move downward and swing the swing arm upward to release the locking restriction on the cutter.
[0005] The clamping mechanism includes a mounting plate, on which a vertically arranged clamping cylinder is provided. The cylinder body of the clamping cylinder is hinged to the upper end of the pressure plate. At least two sets of horizontally arranged pressure strips are provided at the lower end of the pressure plate, wherein the two sets of pressure strips are respectively arranged on the front and rear sides of the corresponding cutting long groove. The lower end of the pressure plate is also provided with a horizontally arranged heat sealing pad, which corresponds to the heat sealing long groove.
[0006] The lower rear part of the operating table is also equipped with a film pressing mechanism that can move back and forth. Below the film pressing mechanism is a film roll offset detection component. The film roll offset detection component can send a signal indicating whether there is a film roll or not. The external control system determines the offset direction of the film roll and controls the two-station film roll transfer mechanism to move horizontally left and right to correct the film roll.
[0007] The beneficial effects of this utility model are: A. Utilizing a simplified film-bonding heat-sealing device, after the automatic switching between new and old film rolls, the new film can be manually moved to the operating table to overlap or insert with the old film, and finally automatically heat-sealed. The overall structure is simplified, the coordination of each mechanism is simple and improves the reliability of the operation, and its small footprint can meet the packaging needs of enterprises with small production volumes.
[0008] B. The cutter locking mechanism can lock and restrict the cutter, avoiding the risk of malfunction of the rodless cylinder when manually overlapping or inserting new and old films, thus improving the reliability of the equipment.
[0009] C. Two sets of pressure strips are set on the front and back sides of the corresponding cutting groove, so that when the old film is pressed down, the cutter can cut the film between the two sets of pressure strips, ensuring the stability of the film cutting and the neatness of the cut.
[0010] D. The lower rear part of the operating table is equipped with a film pressing mechanism that can move back and forth to prevent the cut old film from sliding down, making it convenient for manual overlapping or splicing operations to be completed on the operating table.
[0011] E. By utilizing the film roll offset detection component in conjunction with the two-station film roll transfer mechanism, real-time automatic correction function is achieved during film feeding, avoiding the problem of missing seals at the top and bottom during subsequent bag making, thus improving the reliability of the equipment. Attached Figure Description
[0012] Figure 1 This is a three-dimensional isometric view of this utility model.
[0013] Figure 2 This is a schematic diagram of the heat sealing device for film bonding.
[0014] Figure 3 This is a schematic diagram of the film heat sealing device from another angle.
[0015] Figure 4 This is a schematic diagram of the cutter locking mechanism.
[0016] Figure 5 This is a schematic diagram of the clamping mechanism. Detailed Implementation
[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model are described in detail below with reference to the accompanying drawings. The embodiments are exemplary and intended to explain this utility model, but should not be construed as limiting this utility model.
[0018] See Figures 1-5 A simple film roll changing machine includes a two-station film roll transfer mechanism 1, which is used for horizontally transferring new and old film rolls left and right. The front of the two-station film roll transfer mechanism 1 is equipped with a film-joining heat-sealing device. The film-joining heat-sealing device includes a frame 2. A liftable pressing mechanism 5 is provided at the upper front end of the frame 2. The rear end of the pressing mechanism 5 is hinged to the cylinder rod of a horizontal cylinder 6. The cylinder body of the horizontal cylinder 6 is hinged to the upper rear end of the frame 2. The horizontal cylinder 6 drives the pressing mechanism 5 to move horizontally back and forth. An operating table 3 is provided below the pressing mechanism 5. The frame 2 has a cutting groove 3A and a heat-sealing groove 3B arranged horizontally in sequence. The cutting groove 3A has an upward-facing cutter 4. The lower end of the cutter 4 is connected to the slide of the rodless cylinder 4A. The rodless cylinder 4A is connected to the frame 2 and drives the cutter 4 to move left and right. The pressing mechanism 5 has a heat-sealing pad 55 corresponding to the heat-sealing groove 3B. The heat-sealing groove 3B is directly below the heat-sealing groove 3B and has a liftable heat-sealing mechanism 9. The lower end of the cutter 4 is also provided with a cutter locking mechanism 8, which can lock and restrict the movement of the cutter 4.
[0019] Furthermore, the two-station film roll transfer mechanism 1 is equipped with a base, and the base is equipped with two station slides that can move left and right. Each station slide is equipped with a flipping frame at its upper end, and the film roll is installed on the flipping frame. The motor drives the two station slides to move horizontally left and right.
[0020] Furthermore, the cutter locking mechanism 8 includes a support arm 81, which is symmetrically arranged on both sides of the lower end of the operating table 3. The support arm 81 is hinged to the upper part of the swing arm 82. The upper end of the swing arm 82 is connected by a connecting rod 85. A tension spring 84 is provided on the connecting rod 85, preferably one tension spring 84 on each side. The upper end of the tension spring 84 is connected to the lower end of the operating table 3. A pressure roller assembly 83 is also provided on the upper end of one side of the swing arm 82. The lower end of the pressure roller assembly 83 is tangent to the upper end of the swing arm 82. The upper end of the pressure roller assembly 83 passes through the operating table 3 and is higher than the upper surface of the operating table 3. The lower end of the swing arm 82 can lock and restrict the movement of the cutter 4 in the free state. When the pressing mechanism 5 descends, it can drive the pressure roller assembly 83 to move downward and swing the swing arm 82 upward to release the locking restriction on the cutter 4.
[0021] Furthermore, the pressing mechanism 5 includes a mounting plate 51, on which a vertically arranged pressing cylinder 52 is provided. The cylinder body of the pressing cylinder 52 is hinged to the upper end of the pressure plate 53. The lower end of the pressure plate 53 is provided with three sets of horizontally arranged pressing strips 54, two of which are respectively arranged on the front and rear sides of the corresponding cutting groove 3A. The lower end of the pressure plate 53 is also provided with a horizontally arranged heat sealing pad 55, which corresponds to the heat sealing groove 3B.
[0022] Furthermore, a film pressing mechanism 7 that can move back and forth is provided at the lower rear part of the operating table 3. A film roll offset detection component 10 is provided below the film pressing mechanism 7. The film roll offset detection component 10 can send a signal indicating whether there is a film roll or not. The external control system determines the offset direction of the film roll and controls the two-station film roll transfer mechanism 1 to move horizontally left and right to correct the film roll.
[0023] The working principle of this utility model is as follows: Cutting the old film: When the old film used on the two-station film roll transfer mechanism 1 is about to run out, the packaging machine stops running and drives the film pressing mechanism 7 to press the old film. The pressing cylinder 52 drives the pressure plate 53 to descend vertically, so that the three sets of pressure strips 54 press the film roll. Among them, two sets of pressure strips 54 press the old film at the front and rear ends of the cutter 4. At this time, the pressure roller assembly 83 is driven to move downward and swing the swing arm 82 upward to disengage from the cutter 4. The rodless cylinder 4A drives the cutter 4 to move and cut the old film. The pressing cylinder 52 drives the pressure plate 53 to return to the initial position. New film delivery: The two-station film roll transfer mechanism 1 transfers the new film to the back of the film bonding heat sealing device. The new film is then manually transferred to the operating table 3 and inserted into the old film. Complete film splicing: The pressing cylinder 52 drives the pressing plate 53 to descend vertically and press the joint between the new and old films. The heat sealing mechanism 9 moves vertically upward and presses against the joint between the new and old films, then heats it to heat seal the new film and the old film together. The heat sealing mechanism 9 returns to the initial position to complete the automatic film splicing.
Claims
1. A simple roll changing machine, comprising a two-station film roll transfer mechanism (1), the two-station film roll transfer mechanism (1) being used for horizontally transferring new and old film rolls left and right, the front of the two-station film roll transfer mechanism (1) being provided with a film-sealing device, characterized in that: The heat sealing device includes a frame (2), with a liftable pressing mechanism (5) at the upper front end of the frame (2). The rear end of the pressing mechanism (5) is hinged to the cylinder rod of a horizontal cylinder (6), and the cylinder body of the horizontal cylinder (6) is hinged to the upper rear end of the frame (2). The horizontal cylinder (6) drives the pressing mechanism (5) to move horizontally back and forth. An operating table (3) is provided below the pressing mechanism (5). A cutting groove (3A) and a heat sealing groove (3B) are arranged horizontally in front, back, left, and right directions on the operating table (3). The cutting groove (3A) contains a... The cutter (4) is arranged facing upwards. The lower end of the cutter (4) is connected to the slide of the rodless cylinder (4A). The rodless cylinder (4A) is connected to the frame (2). The rodless cylinder (4A) drives the cutter (4) to move left and right. The pressing mechanism (5) is provided with a heat sealing pad (55) corresponding to the heat sealing groove (3B). The heat sealing groove (3B) is provided with a liftable heat sealing mechanism (9) directly below it. The cutter (4) is also provided with a cutter locking mechanism (8) at the lower end. The cutter locking mechanism (8) can lock and restrict the movement of the cutter (4).
2. The simplified rewind machine according to claim 1, characterized in that: The cutter locking mechanism (8) includes a support arm (81), which is symmetrically arranged on both sides of the lower end of the operating table (3). The support arm (81) is hinged to the upper part of the swing arm (82). The upper end of the swing arm (82) is connected by a connecting rod (85). A tension spring (84) is provided on the connecting rod (85). The upper end of the tension spring (84) is connected to the lower end of the operating table (3). At least one side of the swing arm (82) is also provided with a pressure roller assembly (83). The lower end of the pressure roller assembly (83) is tangent to the upper end of the swing arm (82). The upper end of the pressure roller assembly (83) passes through the operating table (3) and is higher than the upper surface of the operating table (3). The lower end of the swing arm (82) can lock and restrict the movement of the cutter (4) in a free state. When the pressing mechanism (5) descends, it can drive the pressure roller assembly (83) to move downward and swing the swing arm (82) upward to release the locking restriction on the cutter (4).
3. The simplified winding machine according to claim 1, characterized in that: The pressing mechanism (5) includes a mounting plate (51), on which a vertically arranged pressing cylinder (52) is provided. The cylinder body of the pressing cylinder (52) is hinged to the upper end of the pressure plate (53). At least two sets of horizontally arranged pressing strips (54) are provided at the lower end of the pressure plate (53). The two sets of pressing strips (54) are respectively arranged on the front and rear sides of the corresponding cutting groove (3A). The lower end of the pressure plate (53) is also provided with a horizontally arranged heat sealing pad (55), which corresponds to the heat sealing groove (3B).
4. The simplified winding machine according to claim 1 or 3, characterized in that: The lower rear part of the operating table (3) is also provided with a film pressing mechanism (7) that can move back and forth. Below the film pressing mechanism (7) is a film roll offset detection component (10). The film roll offset detection component (10) can send a signal that there is a film roll or no film roll. The external control system judges the offset direction of the film roll and controls the two-station film roll transfer mechanism (1) to move horizontally left and right to correct the film roll.