Film-pressing device for preparing heat-shrinkable film for conveying

Abstract

The application discloses a kind of heat shrinkable film preparation delivery film pressing device, including rack (1), the rack (1) upper side one end is equipped with unwinding roller (2), unwinding roller (2) rear side is equipped with multiple groups of reversing roller (3), reversing roller (3) is equipped with tensioning mechanism (4) between, reversing roller (3) rear side is equipped with film pressing mechanism (5), film pressing mechanism (5) rear side is equipped with winding roller (6);Film pressing mechanism (5) includes the same height guide roller (7) with winding roller (6), guide roller (7) upper side is equipped with support (8), support (8) is equipped with with winding direction same direction two-way screw rod (9) in, two-way screw rod (9) both ends are equipped with film pressing frame (10).It can flatten the wrinkle formed in winding process, improve product quality.

Description

Technical Field

[0001] This invention relates to a film pressing device, and more particularly to a film pressing device for preparing and conveying heat-shrinkable film. Background Technology

[0002] Heat shrink film, as the name suggests, is a thin film that shrinks when heated, thus tightly wrapping around a product. It is primarily made of various thermoplastic films. The thickness of heat shrink film is typically less than 0.5 mm, and its soft texture makes it prone to curling during transport, which can affect subsequent winding and use.

[0003] For example, patent application number 201910928860.4 discloses a film cutting and rolling device for heat shrink film production, which includes a frame, an unwinding assembly mounted on the frame, a pressing assembly mounted on one side of the unwinding assembly, and a driving assembly for driving the pressing assembly at one end. By setting up the pressing assembly, the heat shrink film roll is fixed and pulled together, reducing manual operation and lowering the labor intensity of operators. It mainly reduces the formation of wrinkles during the winding process by using the pressing assembly, but it cannot handle wrinkles that have already formed. During the winding process, especially at the beginning and end of the winding process, manual operation is required to place the heat shrink film on the winding roller. This stage easily leads to wrinkle formation. If wrinkles have already formed, the subsequently wound heat shrink film is also prone to wrinkling, resulting in poor product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a film-pressing device for preparing and conveying heat-shrinkable film. It can flatten wrinkles formed during the winding process, thereby improving product quality.

[0005] The technical solution of the present invention: a film pressing device for heat shrink film preparation and conveying, comprising a frame, an unwinding roller at one end of the upper side of the frame, multiple sets of reversing rollers at the rear side of the unwinding roller, a tensioning mechanism between the reversing rollers, a film pressing mechanism at the rear side of the reversing roller, and a take-up roller at the rear side of the film pressing mechanism; the film pressing mechanism includes a guide roller at the same height as the take-up roller, a bracket at the upper side of the guide roller, a bidirectional lead screw in the bracket in the same direction as the take-up direction, and film pressing frames at both ends of the bidirectional lead screw.

[0006] In the aforementioned heat shrink film preparation and conveying pressing device, the pressing frame includes a housing, sliding grooves on both sides of the housing, a fixed seat in the sliding groove, a rotating shaft in the fixed seat, a main pressing roller on the rotating shaft, a support rod on one side of the rotating shaft, two sets of symmetrically arranged fixed frames on the support rod, and an auxiliary pressing roller in the fixed frame.

[0007] In the aforementioned heat shrink film preparation and conveying pressing device, the fixing frame includes an installation part and a limiting block on the upper side of the installation part, the limiting block being a dovetail-shaped limiting block; the installation part is provided with a support shaft for fixing the auxiliary pressure roller; the two sets of fixing frames are provided with abutment grooves on their opposite surfaces, and the two sets of fixing frames are provided with springs connected to the fixing seat on their opposite surfaces.

[0008] In the aforementioned heat shrink film preparation and conveying pressing device, the housing is provided with a stop block that drives the fixed frame to move to both sides, and top blocks corresponding to the abutment grooves are provided on both sides of the stop block. A connecting rod that drives the stop block to move up and down is provided on the upper side of the stop block, and evenly distributed slots are provided on the connecting rod. A card seat corresponding to the connecting rod is provided on the upper side of the housing, and a locking block corresponding to the card slot is provided in the card seat.

[0009] In the aforementioned heat shrink film preparation and conveying pressing device, the top of the fixed seat is provided with a limiting plate, and the limiting plate is provided with a limiting groove corresponding to the limiting block.

[0010] In the aforementioned heat shrink film preparation and conveying pressing device, the tensioning mechanism includes a mounting shaft, on which a movable tensioning roller is provided by a fixing member.

[0011] In the aforementioned heat shrink film preparation and conveying pressing device, the fixing member includes a fixing part fixed on the mounting shaft, a sliding groove provided in the fixing part, a stop block provided in the sliding groove, a rotating part provided between the fixing parts, and a rotating rod connected to the mounting shaft provided in the rotating part.

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

[0013] 1. This application uses a pressing mechanism to flatten the wrinkles formed before winding. The pressing frame can move at a constant speed under the drive of the bidirectional screw to flatten the heat shrink film on the reversing roller and the take-up roller section, thus avoiding wrinkles on the heat shrink film on the take-up roller. Furthermore, the pressing frame can move back and forth, resulting in a good flattening effect on the heat shrink film.

[0014] 2. This application uses a connecting rod to move the stop block, allowing the fixing frame to move to both sides, thereby adapting to heat shrink films of different widths, which has good applicability. In addition, the distance between the center of the fixing frame and the center of the pressing frame is kept consistent, resulting in better pressing effect.

[0015] 3. This application uses a tensioning mechanism to press the heat shrink film during the conveying process, and uses the tensioning roller to press the heat shrink film with its own weight to achieve tension adjustment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the pressing mechanism of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the film pressing frame of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the fixing frame of the present invention;

[0020] Figure 5 This is a schematic diagram of the tensioning mechanism of the present invention.

[0021] The labels in the attached diagram are as follows: 1-frame, 2-unwinding roller, 3-reversing roller, 4-tensioning mechanism, 5-film pressing mechanism, 6-rewinding roller, 7-guide roller, 8-bracket, 9-bidirectional lead screw, 10-film pressing frame, 11-housing, 12-rotating shaft, 13-fixed frame, 14-main pressure roller, 15-sliding groove, 16-fixed seat, 17-limiting block, 18-mounting part, 19-auxiliary pressure roller, 20-limiting plate, 21-limiting groove, 23-support rod, 24-support shaft, 30-abutment groove, 31-connecting groove, 32-mounting shaft, 33-abutment block, 34-top block, 35-connecting rod, 36-slot, 37-slot seat, 38-locking block, 39-fixing component, 40-tensioning roller, 41-fixed part, 42-sliding groove, 43-rotating part, 44-rotating rod, 46-stop block. Detailed Implementation

[0022] Example. A heat-shrinkable film preparation and conveying pressing device, configured as follows: Figure 1-5 As shown, the machine includes a frame 1. One end of the frame 1 is provided with an unwinding roller 2. Multiple sets of reversing rollers 3 are provided behind the unwinding roller 2. A tensioning mechanism 4 is provided between the reversing rollers 3. A film pressing mechanism 5 is provided behind the reversing rollers 3. A take-up roller 6 is provided behind the film pressing mechanism 5. The film pressing mechanism 5 includes a guide roller 7 at the same height as the take-up roller 6. A bracket 8 is provided on the upper side of the guide roller 7. A bidirectional lead screw 9 in the bracket 8 is in the same direction as the take-up direction. Film pressing frames 10 are provided at both ends of the bidirectional lead screw 9.

[0023] The pressing frame 10 includes a housing 11, with sliding grooves 15 on both sides of the housing 11, a fixed seat 16 in the sliding groove 15, a rotating shaft 12 in the fixed seat 16, and a main pressure roller 14 on the rotating shaft 12; a support rod 23 is provided on one side of the rotating shaft 12, and two sets of symmetrically arranged fixed frames 13 are provided on the support rod 23, with an auxiliary pressure roller 19 in the fixed frame 13.

[0024] The fixing frame 13 includes a mounting part 18 and a limiting block 17 on the upper side of the mounting part 18. The limiting block 17 is a dovetail-shaped limiting block. The mounting part 18 is provided with a support shaft 24 for fixing the auxiliary pressure roller 19. The two sets of fixing frames 13 are provided with abutment grooves 30 on their opposite surfaces, and the two sets of fixing frames 13 are provided with springs connected to the fixing seat 16 on their opposite surfaces.

[0025] The housing 11 is provided with abutment blocks 33 that drive the fixing frame 13 to move to both sides. The abutment blocks 33 are provided with top blocks 34 on both sides corresponding to the abutment grooves 30. The upper side of the abutment blocks 33 is provided with a connecting rod 35 that drives the abutment blocks 33 to move up and down. The connecting rod 35 is provided with evenly distributed slots 36. The upper side of the housing 11 is provided with a card seat 37 corresponding to the connecting rod 35. The card seat 37 is provided with a locking block 38 corresponding to the slots 36.

[0026] The top of the fixed base 16 is provided with a limiting plate 20, and the limiting plate 20 is provided with a limiting groove 21 corresponding to the limiting block 17.

[0027] The tensioning mechanism 4 includes a mounting shaft 32, on which a movable tensioning roller 40 is provided via a fixing member 39.

[0028] The fixing member 39 includes a fixing part 41 fixed on the mounting shaft 32, a sliding groove 42 in the fixing part 41, a stop block 46 in the sliding groove 42, a rotating part 43 between the fixing parts 41, and a rotating rod 44 connected to the mounting shaft 32 in the rotating part 43.

[0029] The heat shrink film is released through the unwinding roller 2 and conveyed backward through the reversing roller 3. A tensioning mechanism 4 is provided between the reversing rollers 3. The tensioning mechanism 4 can tension the heat shrink film during conveying, reducing the formation of wrinkles. The tensioning roller 40 in the tensioning mechanism 4 presses on the heat shrink film under the action of gravity, thus tensioning the heat shrink film. Tensioning can reduce the formation of wrinkles in the heat shrink film, but it cannot effectively remove wrinkles that have already formed, especially when the heat shrink film is first attached to the take-up roller along the direction of movement. Since it is pulled manually, wrinkles are easily generated. At this time, the take-up operation is stopped, and then the bidirectional lead screw 9 is started, which drives the pressing frame 10 to move. During the movement of the pressing frame 10, the main pressure roller 14 and the auxiliary pressure roller 19 can press the heat shrink film and squeeze out the wrinkles that have already formed. Driven by the bidirectional lead screw 9, the speed during the pressing process can be made more uniform, avoiding wrinkles caused by speed changes, and the pressing effect is better. When encountering heat shrink film of different sizes, the position of the fixing frame 13 can be adjusted by moving the abutment block 33 through the connecting rod 35, thereby changing the position of the auxiliary pressure roller 19. The specific operation process is as follows: If the heat shrink film is large, the main pressure roller 14 cannot fully press the heat shrink film. In this case, first pull out the locking block 38 in the card holder 37, and then push the connecting rod 35 downward. When the connecting rod 35 moves, it will drive the abutment block 33 to move downward. Through the cooperation of the top block 34 and the abutment groove 30, the fixing frame 13 moves to both sides, thereby increasing the pressing area and improving applicability. Finally, simply reinsert the locking block 38 into the card holder 37 to lock it. The fixing frame 13 is provided with a limiting plate 20, which can limit and guide the mounting part 18. Finally, according to the thickness of the heat shrink film, the fixing seat 16 slides along the sliding groove 15, so that the main pressure roller 14 and the auxiliary pressure roller 19 can move up and down, improving applicability.

Claims

1. A film-pressing device for preparing and conveying heat-shrinkable film, characterized in that, The frame (1) includes an unwinding roller (2) at one end of its upper side, multiple reversing rollers (3) at the rear of the unwinding roller (2), a tensioning mechanism (4) between the reversing rollers (3), a film pressing mechanism (5) at the rear of the reversing rollers (3), and a take-up roller (6) at the rear of the film pressing mechanism (5). The film pressing mechanism (5) includes a guide roller (7) at the same height as the take-up roller (6), a bracket (8) at the upper side of the guide roller (7), and a bracket (8) in the bracket (8) that is in the same direction as the take-up direction. The bidirectional lead screw (9) has a pressing frame (10) at both ends; the pressing frame (10) includes a housing (11), with sliding grooves (15) on both sides of the housing (11), a fixed seat (16) in the sliding groove (15), a rotating shaft (12) in the fixed seat (16), and a main pressure roller (14) on the rotating shaft (12); a support rod (23) is provided on one side of the rotating shaft (12), and two sets of symmetrically arranged fixing frames (13) are provided on the support rod (23). (13) is provided with an auxiliary pressure roller (19); the fixing frame (13) includes a mounting part (18) and a limiting block (17) on the upper side of the mounting part (18), the limiting block (17) is a dovetail-shaped limiting block; the mounting part (18) is provided with a support shaft (24) for fixing the auxiliary pressure roller (19); the two sets of fixing frames (13) are provided with abutment grooves (30) on their opposite surfaces, and the two sets of fixing frames (13) are provided with springs connected to the fixing seat (16) on their opposite surfaces; the housing (11) The housing (11) is provided with a stop block (33) that drives the fixed frame (13) to move to both sides. The stop block (33) is provided with a top block (34) on both sides corresponding to the abutment groove (30). The upper side of the stop block (33) is provided with a connecting rod (35) that drives the stop block (33) to move up and down. The connecting rod (35) is provided with evenly distributed slots (36). The upper side of the housing (11) is provided with a card seat (37) corresponding to the connecting rod (35). The card seat (37) is provided with a locking block (38) corresponding to the slot (36).

2. The pressure film device for preparing and conveying heat-shrinkable film according to claim 1, characterized in that: The fixed base (16) is provided with a limiting plate (20) at the top, and the limiting plate (20) is provided with a limiting groove (21) corresponding to the limiting block (17).

3. The pressure film device for preparing and conveying heat-shrinkable film according to claim 1, characterized in that: The tensioning mechanism (4) includes a mounting shaft (32), on which a movable tensioning roller (40) is provided via a fixing member (39).

4. The pressure film device for preparing and conveying heat-shrinkable film according to claim 3, characterized in that: The fixing member (39) includes a fixing part (41) fixed on the mounting shaft (32), a sliding groove (42) is provided in the fixing part (41), a stop block (46) is provided in the sliding groove (42), a rotating part (43) is provided between the fixing parts (41), and a rotating rod (44) connected to the mounting shaft (32) is provided in the rotating part (43).

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