A device for preventing folding of a PVC membrane

Abstract

The utility model belongs to packaging equipment technical field, concretely relates to a device for preventing PVC film folding. Including base, the top of base is fixed with the sliding slot, the symmetry of two adjusting base plates is installed on the sliding slot, install c type groove frame on the adjusting base plate, be equipped with the cylinder between two c type groove frames, the both ends fixed of cylinder are equipped with sliding axle, sliding axle and corresponding c type groove frame sliding joint, still have counterweight that jointly slides between two c type groove frames, the counterweight is located above the cylinder. The utility model can make PVC film always be in the taut state in the operation process, can closely adhere to the lower die of heating lower plate and forming mould when passing through heating plate, forming mould, makes PVC film not to be accumulated between forming mould and heating plate and causes folding phenomenon, the utility model can satisfy the taut adjustment of PVC film, can also avoid moving again to base, has facilitated the subsequent adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology, and specifically relates to a device for preventing PVC film from folding. Background Technology

[0002] Flat-plate aluminum-plastic blister packaging machines are a core component of modern packaging machinery, gradually penetrating various industries such as food, pharmaceuticals, and health products. They have become crucial equipment for ensuring product safety and extending shelf life. Their core function is to safely and effectively encapsulate various products within aluminum-plastic blister packs, protecting them from environmental damage during transportation and storage, thus ensuring product quality. While the aluminum-plastic blister packaging machine industry is experiencing unprecedented development driven by Industry 4.0, gradually achieving automation and intelligence in production processes, existing models remain relatively fixed: PVC film on a PVC support passes through a PVC feeding device and a PVC position adjustment device, then enters the PVC heating station between upper and lower heating plates under the action of feed rollers. The upper and lower heating plates heat the PVC film to a predetermined temperature, softening it. Subsequently, the forming feed device pulls the PVC. Due to variations in the PVC supplier or the characteristics of the packaging material itself—that is, differences in the PVC film's extensibility after heating—the PVC film may curl and fold as it passes through the heating plates and forming mold.

[0003] Due to limitations in equipment models and the characteristics of PVC film itself, we cannot directly solve the PVC film folding problem from the equipment itself and raw materials in a short period of time. At the same time, when adjusting the film, how to quickly adjust it according to different types of film is also the key to improving work efficiency. Utility Model Content

[0004] To address the aforementioned shortcomings, this invention provides a device for preventing PVC film from folding. This invention keeps the PVC film taut throughout operation, ensuring it adheres tightly to the lower heating plate and the lower die of the forming mold as it passes the heating plate and forming mold, preventing the PVC film from accumulating between the forming mold and the heating plate and causing folding. Furthermore, this invention allows for quick adjustment of the width of the two adjusting base plates according to the different widths of the PVC film. This invention not only satisfies the need for PVC film tautness adjustment but also avoids the need to move the base again, facilitating subsequent adjustments.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for preventing PVC film from folding includes a base, a groove fixedly provided on the top of the base, two adjustable base plates symmetrically installed on the groove, C-shaped slot frames installed on the adjustable base plates, a roller provided between the two C-shaped slot frames, sliding shafts fixedly provided at both ends of the roller, and the sliding shafts slidably connected to the corresponding C-shaped slot frames; a counterweight is also slidably connected between the two C-shaped slot frames, and the counterweight is located above the roller.

[0007] Furthermore, the adjusting base plate includes a base plate body, which is slidably connected to the slide groove; a threaded hole is provided through the middle of the base plate body, and a bidirectional screw is screwed into the threaded holes of the two base plate bodies; a motor bracket is fixedly provided on one side of the base, and a drive motor is fixedly installed on the motor bracket, and the output shaft of the drive motor is fixedly connected to one end of the bidirectional screw.

[0008] Furthermore, a slide bar is fixedly provided on the base plate body, and the C-shaped slot frame includes a slot frame base. A second slide groove is opened at the bottom of the slot frame base, and the second slide groove is slidably connected to the slide bar; the slot frame body is fixedly connected to the top of the slot frame base.

[0009] Furthermore, the sliding direction of the second groove is perpendicular to the sliding direction of the base plate body.

[0010] Furthermore, the surface of the base plate body is uniformly provided with multiple first threaded openings, and a second threaded opening is provided on one side of the slot frame base. An angle iron is installed on one of the first threaded openings and the second threaded opening.

[0011] Furthermore, a closed cover plate is fixedly installed at the upper end of the slot frame body by bolts.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) Each time the PVC supplier changes, the extensibility of different PVC films after heating varies. Even within the same supplier, there are differences in the PVC produced in each batch. During operation, the PVC film that has been heated and stretched will sway left and right, affecting the bubble forming of the blister pack machine. In severe cases, the PVC film will fold. Such PVC film cannot pass through the guide rail and the drive roller and needs to be recut and spliced. This will result in PVC film waste and increase the labor intensity of personnel. It will also cause some PVC film waste and lead to a small equipment stoppage, affecting the operating efficiency of the equipment. This utility model adds a roller to the film feeding control part. By pressing the PVC film down with the roller, the PVC film can always be kept in a taut state during operation. When passing through the heating plate and the forming mold, it can stick tightly to the lower heating plate and the lower mold of the forming mold, so that the PVC film will not accumulate between the forming mold and the heating plate and cause folding.

[0014] (2) Through the structural design of the roller and counterweight, the PVC film passes under the roller before entering the heating plate. Since the C-shaped groove frame is slidably connected to the sliding shaft of the roller, the roller will press down on the PVC film by its own weight. This can keep the PVC film in a taut state during operation. Due to the rolling characteristics of the roller, the roller will not affect the flow of the PVC film during the pressing process. Furthermore, the counterweight can be adjusted according to the different PVC films to keep the PVC film in a suitable taut state, thereby avoiding the problem of folding after the PVC film is heated.

[0015] (3) By controlling the drive motor, this utility model can quickly adjust the width of the two adjustment base plates according to the different widths of the PVC film, and thus change the width of the C-shaped groove frame accordingly, so as to facilitate the passage of the film. When adjusting the width of the two adjustment base plates, the size of the roller and the counterweight can be changed according to the specific size.

[0016] (4) Through the structural design of the first threaded opening and the second threaded opening, the distance between the roller and the subsequent heating area can be finely adjusted, which can not only meet the tension adjustment of the PVC film, but also avoid moving the base again, which facilitates subsequent adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a device for preventing PVC film folding according to the present invention.

[0018] Figure 2 This is a schematic diagram of the dispersion structure of a device for preventing PVC film folding according to the present invention;

[0019] Figure 3 This is a partial structural diagram of the adjusting base plate of the device for preventing PVC film folding according to the present invention;

[0020] Figure 4 This is a schematic diagram of the partial dispersion structure of the adjusting base plate of the device for preventing PVC film folding according to the present invention;

[0021] Figure 5 This is a partial structural schematic diagram of a device for preventing PVC film folding according to the present invention.

[0022] The attached diagram is labeled as follows: 100-base; 110-slide groove; 120-motor bracket; 200-adjusting base plate; 210-base plate body; 211-threaded hole; 212-first threaded opening; 220-slide bar; 230-angle iron; 300-C-shaped slot frame; 310-slot frame base; 311-second slide groove; 312-second threaded opening; 320-slot frame body; 330-closed cover plate; 400-roller; 410-sliding shaft; 500-counterweight; 600-drive motor; 610-double-acting screw. Detailed Implementation

[0023] 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, 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.

[0024] Example

[0025] like Figures 1-5 As shown, a device for preventing PVC film from folding includes a base 100, a slide groove 110 fixedly provided on the top of the base 100, two adjusting base plates 200 symmetrically installed on the slide groove 110, C-shaped groove frames 300 installed on the adjusting base plates 200, a roller 400 provided between the two C-shaped groove frames 300, and sliding shafts 410 fixedly provided at both ends of the roller 400, the sliding shafts 410 being slidably connected to the corresponding C-shaped groove frames 300; a counterweight 500 is also slidably connected between the two C-shaped groove frames 300, the counterweight 500 being located above the roller 400.

[0026] This invention, through the structural design of the roller 400 and counterweight 500, allows the PVC film to pass under the roller 400 before entering the heating lower plate. Since the C-shaped groove frame 300 is slidably connected to the sliding shaft 410 of the roller 400, the roller 400 presses down on the PVC film by its own weight, keeping the PVC film taut throughout the process. Due to the rolling characteristics of the roller 400, the downward pressing process does not affect the flow of the PVC film. Furthermore, the number of counterweights 500 can be adjusted according to the type of PVC film to maintain a suitable tautness, thus preventing folding of the PVC film after heating.

[0027] It is worth noting that the specific weight values ​​of the roller 400 and the counterweight 500 of this utility model can be adjusted according to the actual type of membrane, and are not further limited here. The base 100 is a heavier object, thereby improving the stability of the device.

[0028] Furthermore, the adjusting base plate 200 includes a base plate body 210, which is slidably connected to the slide groove 110; a threaded hole 211 is provided through the middle of the base plate body 210, and a bidirectional screw 610 is screwed into the threaded holes 211 of the two base plate bodies 210; a motor bracket 120 is fixedly provided on one side of the base 100, and a drive motor 600 is fixedly installed on the motor bracket 120, and the output shaft of the drive motor 600 is fixedly connected to one end of the bidirectional screw 610.

[0029] This utility model, through the control of the drive motor 600, can quickly adjust the width of the two adjusting base plates 200 according to the different widths of the PVC film, thereby changing the width of the C-shaped groove frame 300 to facilitate the passage of the film. When adjusting the width of the two adjusting base plates 200, the size of the roller 400 and the counterweight 500 can be changed according to the specific dimensions.

[0030] It is worth noting that the drive motor 600 of this utility model is a bidirectional stepper motor, capable of rotating in both directions, which is existing technology and will not be described in detail here. The bidirectional screw 610 controls the two base plate bodies 210 to move closer or further apart simultaneously.

[0031] Furthermore, a slide bar 220 is fixedly provided on the base plate body 210, and the C-shaped groove frame 300 includes a groove frame base 310. The bottom of the groove frame base 310 has a second slide groove 311, which is slidably connected to the slide bar 220. The top of the groove frame base 310 is fixedly connected to the groove frame body 320. By sliding the second slide groove 311 and the slide bar 220, the distance between the roller 400 and the subsequent heating process can be finely adjusted, facilitating precise tensioning of the film.

[0032] Furthermore, the sliding direction of the second groove 311 is perpendicular to the sliding direction of the base plate body 210. The sliding direction of the second groove 311 is the running direction of the membrane.

[0033] Furthermore, the surface of the base plate body 210 is uniformly provided with a plurality of first threaded openings 212, and one side of the slot frame base 310 is provided with a second threaded opening 312. An angle iron 230 is installed on both the first threaded opening 212 and the second threaded opening 312. The angle iron 230 facilitates quick installation and disassembly.

[0034] This utility model, through the structural design of the first threaded port 212 and the second threaded port 312, allows for the fixing of different first threaded ports 212 and second threaded ports 312 according to different situations. This enables fine-tuning of the distance between the roller 400 and the subsequent heating area, which can satisfy the tension adjustment of the PVC film and avoid moving the base 100 again, thus facilitating subsequent adjustments.

[0035] Furthermore, a closed cover plate 330 is bolted to the upper end of the slot frame body 320. The closed cover plate 330 facilitates positioning and prevents parts from falling during handling.

[0036] Each time the PVC supplier changes, the extensibility of the PVC film varies after heating. Even within the same supplier, there are differences in the PVC produced in each batch. During operation, the PVC film, stretched by heat, wobbles from side to side, affecting the bubble forming process of the blister pack machine. In severe cases, the PVC film folds, preventing it from passing through the guide rails and drive rollers. This necessitates recutting and splicing, resulting in PVC film waste, increased labor intensity, and minor equipment downtime, impacting operational efficiency. This invention addresses this by adding a roller 400 to the film feeding control area. By pressing down on the PVC film, the roller 400 keeps the PVC film taut throughout operation. As it passes the heating plate and forming mold, it adheres tightly to the lower heating plate and the lower die of the forming mold, preventing the PVC film from accumulating between the forming mold and the heating plate and causing folding.

[0037] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for preventing PVC film from folding, characterized in that, The system includes a base (100), on the top of which a sliding groove (110) is fixedly provided. Two adjusting base plates (200) are symmetrically installed on the sliding groove (110). C-shaped slot frames (300) are installed on the adjusting base plates (200). A roller (400) is provided between the two C-shaped slot frames (300). Sliding shafts (410) are fixed at both ends of the roller (400). The sliding shafts (410) are slidably connected to the corresponding C-shaped slot frames (300). A counterweight (500) is also slidably connected between the two C-shaped slot frames (300). The counterweight (500) is located above the roller (400).

2. The device for preventing PVC film folding according to claim 1, characterized in that, The adjusting base plate (200) includes a base plate body (210), which is slidably connected to a slide groove (110); a threaded hole (211) is provided through the middle of the base plate body (210), and a bidirectional screw (610) is screwed into the threaded holes (211) of the two base plates (210); a motor bracket (120) is fixedly provided on one side of the base (100), and a drive motor (600) is fixedly installed on the motor bracket (120), and the output shaft of the drive motor (600) is fixedly connected to one end of the bidirectional screw (610).

3. The device for preventing PVC film folding according to claim 2, characterized in that, The base plate body (210) is fixedly provided with a slide bar (220), the C-shaped slot frame (300) includes a slot frame base (310), the bottom of the slot frame base (310) is provided with a second slide groove (311), the second slide groove (311) is slidably connected to the slide bar (220); the top of the slot frame base (310) is fixedly connected with the slot frame body (320).

4. The device for preventing PVC film folding according to claim 3, characterized in that, The sliding direction of the second groove (311) is perpendicular to the sliding direction of the base plate body (210).

5. The device for preventing PVC film folding according to claim 3, characterized in that, The base plate body (210) has a plurality of first threaded openings (212) evenly distributed on its surface, and the slot frame base (310) has a second threaded opening (312) distributed on one side. An angle iron (230) is installed on one of the first threaded openings (212) and the second threaded opening (312).

6. The device for preventing PVC film folding according to claim 3, characterized in that, The upper end of the slot frame body (320) is fixed with a closed cover plate (330) by bolts.

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