PE self-adhesive protective film edge pre-cutting device easy to position and tear off

Abstract

The utility model provides an easy positioning and tearing PE self -adhesion protective film edge pre -cutting device relates to film pre -edge technical field, including longitudinal rotation axis and protective film, the both ends part of longitudinal rotation axis is symmetrical and is equipped with two PE self -adhesion tape reel, all are equipped with the round mounting hole in this both ends part, all are equipped with the key groove in this both ends part outer periphery, the inside of round mounting hole is installed in the form of spring push -and -pull T -shaped positioning member along the vertical sliding, T -shaped positioning member is welded and is composed of horizontal force plate and vertical insertion rod, round mounting hole inner periphery rotation installation has the drive swing board, and the outside end of drive swing board pivot is fixedly connected with knob. When two PE self -adhesion tapes are adhered with the cooperation of protective film, may occur adhered misplacement needs to re -correct adjustment working condition, under this working condition, the convex shape tear strip can conveniently hook and pull out the force, and PE self -adhesion tape is removed quickly, and then the adhered position of PE self -adhesion tape is re -adjusted.

Description

Technical Field

[0001] This utility model relates to the field of film pre-edge technology, and in particular to an edge pre-cutting device for PE self-adhesive protective film that is easy to position and tear off. Background Technology

[0002] When pre-cutting the edges of the protective film, in order to calibrate the cutting blade and ensure cutting accuracy, it is usually necessary to stick PE self-adhesive positioning tape on both sides of the protective film to position the cutting line. Thus, the edge film pre-cutting device is usually equipped with a mechanism for unwinding and sticking the PE self-adhesive positioning tape roll.

[0003] Most existing pre-cutting devices use threaded locking parts (such as large-diameter nuts) to position and install the PE self-adhesive positioning tape reel. This makes it cumbersome and inconvenient to replace or remove the PE self-adhesive positioning tape reel, requiring multiple turns of the threaded locking parts in both directions. This indirectly reduces the replacement efficiency of the PE self-adhesive positioning tape reel. In addition, most PE self-adhesive positioning tapes lack a mechanism for easy tearing and removal by hand, making it difficult to remove the PE self-adhesive positioning tape when it is misaligned and needs to be readjusted, thus affecting the convenience of correction and adjustment. Utility Model Content

[0004] In view of this, the present invention provides an edge pre-cutting device for easy positioning and tearing of PE self-adhesive protective film, in order to solve the problem that most PE self-adhesive positioning tapes lack a mechanism for easy tearing and removal by fingers.

[0005] The technical solution proposed by this utility model is as follows: an easy-to-position and tear-off PE self-adhesive protective film edge pre-cutting device, specifically including a longitudinal rotating shaft and a protective film. Two PE self-adhesive tape reels are symmetrically fitted at both ends of the longitudinal rotating shaft. Circular mounting holes are provided in both ends, and keyways are provided on the outer periphery of both ends. A T-shaped positioning component that slides vertically is installed inside the circular mounting hole by a spring-push mechanism. The T-shaped positioning component is composed of a horizontal force-bearing plate and a vertical insertion rod welded together. The T-shaped positioning component rotates within the circular mounting hole. The device is equipped with a drive swing plate, and a knob is fixed to the outer end of the drive swing plate's rotating shaft. The inner circumference of the shaft cylinder at the center of the PE self-adhesive tape reel is formed with a key strip, and the end of the shaft cylinder is sleeved with the end of the longitudinal rotating shaft. The key strip is inserted into the keyway. The vertical insertion rod passes through the peripheral wall at the end of the longitudinal rotating shaft and is inserted into the key strip. The PE self-adhesive tape unwound and pulled from the two PE self-adhesive tape reels is adhered and fixed to the two side edges of the protective film. The inner circumference of the wound PE self-adhesive tape is connected with equally spaced fuzzy tear strips.

[0006] Furthermore, when the PE self-adhesive tape wound on the PE self-adhesive tape reel is pulled out and laid flat to adhere to the protective film, the tassel-shaped tear strip is located on the top side of the PE self-adhesive tape in the unfolded and laid-flat state.

[0007] Furthermore, two vertical track shafts are symmetrically fixed inside the circular mounting hole, and the horizontal force-bearing plate is slidably engaged with the two vertical track shafts. The spring that pushes the T-shaped positioning member is mounted on the vertical track shaft and is compressed and clamped between the horizontal force plate and the inner circumference of the circular mounting hole.

[0008] Furthermore, the outer end of the drive swing plate shaft and the knob both protrude from the circular mounting hole.

[0009] Furthermore, it also includes a frame-shaped base, with two rollers symmetrically and rotatably mounted on the upper part of both ends of the frame-shaped base, one of which is a protective film roller and the other is a protective film take-up roller. Two π-shaped frames are symmetrically welded to the middle part of the top of the two long side rods of the frame base. Two guide rollers are symmetrically rotated between the two ends of the horizontal beam plate at the top of the two π-shaped frames. The height of the guide rollers is higher than that of the rolling roller.

[0010] Furthermore, the protective film drawn from the protective film roller is sequentially passed through two guide rollers, and the first end of the protective film is connected to the protective film take-up roller. The portion of the protective film located between the two guide rollers has a stretched and flat structure.

[0011] Furthermore, two U-shaped vertical support frames are welded to the top side of the transverse beam plate at the top of the two π-shaped frames at a distance from each other, and two vertical guide shafts are symmetrically welded to the bottom side of the longitudinal beam plate at the top of the U-shaped vertical support frames. Two vertical guide shafts are slidably mounted with U-shaped sliding frames, and springs are compressed and fitted on the parts of the two vertical guide shafts located between the U-shaped sliding frames and the U-shaped vertical support frames. A longitudinally mounted rotating shaft is rotatably installed through the bottom part of the two vertical side rods of a U-shaped sliding frame. Two cutting blades are symmetrically fixed at the bottom part of the two vertical side rods of another U-shaped sliding frame. The bottom conical blades of the two cutting blades are used to pierce and cut the two side edges of the protective film. After the two side edges are cut off, two waste edge strips are formed.

[0012] Furthermore, two waste edge take-up reels are symmetrically rotatably installed below one of the guide rollers, and the two waste edge take-up reels are used to wind and collect the two waste edge strips.

[0013] The PE self-adhesive protective film edge pre-cutting device provided by this utility model has the following beneficial effects: When two PE self-adhesive tapes are used in conjunction with a protective film, there may be situations where the tapes are misaligned and need to be readjusted. In such cases, the frayed tear strip can be easily pulled out by hand to quickly tear off the PE self-adhesive tapes, and then the adhesive positions of the PE self-adhesive tapes can be readjusted. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this utility model is shown; Figure 2 A bottom-side view of the entire utility model is shown; Figure 3 This utility model illustrates Figure 1 Enlarged structural diagram of section A; Figure 4 The diagram shows the assembly relationship between the PE self-adhesive tape reel and the longitudinally positioned rotating shaft in this invention. Figure 5 A half-sectional internal structure diagram of the central shaft cylinder and circular mounting hole of this utility model is shown. Figure 6 This diagram shows the disassembly state of the PE self-adhesive tape reel in a semi-sectional state according to the present invention.

[0017] List of reference numerals in the attached diagram: 1. Frame-shaped base; 2. Protective film roller; 3. Protective film take-up roller; 4. π-shaped frame; 401. U-shaped vertical support frame; 4011. Vertical guide shaft; 5. Waste edge winding reel; 6. PE self-adhesive tape reel; 601 PE self-adhesive tape; 6011 flake tear tape; 602 shaft cylinder; 6021 key strip; 7. U-shaped sliding frame; 701. Vertical pivot; 7011. Vertical track shaft; 7012. Keyway; 7013. Circular mounting hole; 8. Guide rollers; 9. Drive assembly; 10. Electrical control box; 11. Protective film; 12. Gear motor; 13. T-shaped positioning component; 1301. Horizontal load-bearing plate; 1302. Vertical insertion rod; 14. Drive plate; 1401. Knob; 15. Cutting knife. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this 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, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Please refer to Figures 1 to 6 Example 1: This embodiment proposes an easy-to-position and tear-off PE self-adhesive protective film edge pre-cutting device, including a longitudinally placed rotating shaft 701 and a protective film 11. Two PE self-adhesive tape reels 6 are symmetrically fitted at both ends of the longitudinally placed rotating shaft 701. Circular mounting holes 7013 are provided at both ends, and keyways 7012 are provided on the outer periphery of both ends. A T-shaped positioning member 13, which slides vertically, is installed inside the circular mounting hole 7013 by a spring push. The T-shaped positioning member 13 is composed of a horizontal force-bearing plate 1301 and a vertical insertion rod 1302 welded together. A driving swing plate 14 is rotatably installed at the top position of the inner periphery of the circular mounting hole 7013. A knob 1401 is fixed to the outer end of the rotating shaft of plate 14; a key strip 6021 is formed on the inner circumference of the shaft 602 at the center of the PE self-adhesive tape reel 6, the shaft 602 is sleeved with the end of the longitudinal rotating shaft 701, and the key strip 6021 is inserted and assembled with the keyway 7012; the top part of the vertical insert rod 1302 passes through the peripheral wall of the end of the longitudinal rotating shaft 701 and is inserted and engaged with the key strip 6021; the PE self-adhesive tape 601 unwound and pulled from the two PE self-adhesive tape reels 6 is adhered and fixed to the two side edges of the protective film 11, and the inner circumference of the wound PE self-adhesive tape 601 is connected with equally spaced fuzzy tear strips 6011.

[0020] Preferably, when the PE self-adhesive tape 601 wound on the PE self-adhesive tape reel 6 is pulled out and laid flat to adhere to the protective film 11, the purplish tear strip 6011 is located on the top side of the PE self-adhesive tape 601 in the unfolded and laid-flat state.

[0021] Preferably, two vertical track shafts 7011 are symmetrically fixed inside the circular mounting hole 7013, and the horizontal force-bearing plate 1301 is slidably engaged with the two vertical track shafts 7011. The spring that pushes the T-shaped positioning member 13 is mounted on the vertical track shaft 7011 and is compressed and clamped between the horizontal force plate 1301 and the inner circumference of the circular mounting hole 7013.

[0022] Preferably, the outer end of the drive plate 14 shaft and the knob 1401 both protrude from the circular mounting hole 7013.

[0023] Implementation 2: This embodiment is based on Implementation 1, but with the following additions: This embodiment includes a frame-shaped base 1. Two rollers are symmetrically and rotatably mounted on the top of both ends of the frame-shaped base 1. One of them is a protective film roller 2, and the other is a protective film take-up roller 3. Two π-shaped frames 4 are symmetrically welded to the middle of the top of the two long side rods of the frame-shaped base 1. Two guide rollers 8 are symmetrically and rotatably mounted between the two ends of the horizontal beam plate at the top of the two π-shaped frames 4. The height of the guide rollers 8 is higher than the height of the rollers.

[0024] Preferably, the protective film 11 drawn from the protective film roller 2 is sequentially passed through two guide rollers 8, and the first end of the protective film 11 is connected to the protective film take-up roller 3; the part of the protective film 11 located between the two guide rollers 8 has a stretched and flat structure.

[0025] Preferably, two U-shaped vertical support frames 401 are welded to the top side of the horizontal beam plate at the top of the two π-shaped frames 4 at a distance from each other. Two vertical guide shafts 4011 are symmetrically welded to the bottom side of the longitudinal beam plate at the top of the U-shaped vertical support frames 401. U-shaped sliding frames 7 are slidably installed on the two vertical guide shafts 4011. Springs are compressed and fitted on the part of the two vertical guide shafts 4011 between the U-shaped sliding frames 7 and the U-shaped vertical support frames 401. A longitudinal rotating shaft 701 is rotatably installed through the bottom part of the two vertical side rods of one U-shaped sliding frame 7. Two cutting blades 15 are symmetrically fixed to the bottom part of the two vertical side rods of the other U-shaped sliding frame 7. The bottom conical blade part of the two cutting blades 15 is used to pierce and cut the two side edges of the protective film 11. After the two side edges are cut off, two waste edge strips are formed.

[0026] Preferably, two waste edge take-up reels 5 are symmetrically rotated and installed below a guide roller 8. The two waste edge take-up reels 5 are used to wind and collect the two waste edge strips.

[0027] Preferably, it also includes a drive assembly 9 and a geared motor 12. The geared motor 12 is fixedly installed near the side of the waste edge take-up reel 5, and the power output shaft of the geared motor 12 is connected to the reel of the waste edge take-up reel 5 through a coupling. The drive assembly 9 is fixedly installed near the end of the protective film take-up roller 3, and the power output shaft of the drive assembly 9 is connected to the roller shaft of the protective film take-up roller 3 through a coupling. An electrical control box 10 is fixedly installed on a π-shaped frame 4. The electrical control box 10 contains electrical control components for controlling the start and stop of the drive assembly 9 and the geared motor 12.

[0028] The working principle, specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in realizing this technical solution will be described and explained in detail below: In use, first start the drive assembly 9. After the drive assembly 9 is started, it rotates and drives the protective film take-up roller 3, which in turn pulls and conveys the protective film 11. When the protective film 11 is pulled and driven, it pulls and drives the protective film roller 2 to rotate and unwind. The outer periphery of the wound PE self-adhesive tape 601 is coated with adhesive. The U-shaped slide frame 7 and the longitudinal rotating shaft 701 slide downward under the push of the springs on the two vertical guide shafts 4011 at the corresponding positions, and press the two PE self-adhesive tape reels 6 against the two side edges of the protective film 11. When the two PE self-adhesive tape reels 6 are pressed against the two side edges, the adhesive on the outer periphery of the PE self-adhesive tape 601 is adhered and fixed to the two side edges, and under the pull of the protective film 11, it is unfolded and laid flat to adhere to the two side edges (see reference). Figure 1 During the traction and conveying of the protective film 11, the two cutting blades 15, under the push of the springs on the two vertical guide shafts 4011 at corresponding positions, pierce and cooperate with the two side edges of the protective film 11, and cut the two side edges to complete the cutting and removal of the film edge of the protective film 11. After the two side edges are cut and separated, two waste edge strips are formed. The two waste edge strips are wound and collected on the two waste edge take-up reels 5 respectively. The finished protective film 11 after the film edge cutting is completed is wound and collected on the protective film take-up roller 3.

[0029] When the vertical insertion rod 1302 is inserted into the key strip 6021, the PE self-adhesive tape reel 6 can be positioned at the end of the U-shaped sliding frame 7. The T-shaped positioning piece 13 is installed by spring push. The vertical insertion rod 1302 is fixed in the insertion positioning state by spring push on the vertical track shaft 7011. When disassembling and replacing the PE self-adhesive tape reel 6, by driving the swing plate 14, simply turn the knob 1401 clockwise to push and drive the horizontal force plate 1301 and the vertical insertion rod 1302 to compress the spring and slide down, and control the vertical insertion rod 1302 to separate from the key strip 6021, unlocking and releasing the PE self-adhesive tape reel 6. For the PE self-adhesive tape reel 6, before disassembling and replacing it, and before inserting the newly replaced PE self-adhesive tape reel 6 into the end of the longitudinal rotating shaft 701, the T-shaped positioning piece 13 must be driven down by the knob 1401 and the drive swing plate 14. This controls the vertical insertion rod 1302 to slide down and retract into the circular mounting hole 7013, creating space in the keyway 7012 for the key strip 6021 on the newly replaced PE self-adhesive tape reel 6 to slide smoothly and assemble into the keyway 7012 without obstruction. After completing the above operations, the newly replaced PE self-adhesive tape reel 6 is then fitted into the longitudinal rotating shaft. After assembling the end of 701, the hand releases the knob 1401, releasing the compression holding force indirectly acting on the spring of the vertical track shaft 7011 through the drive swing plate 14 and the horizontal force plate 1301. At this time, the compressed spring automatically pushes back, causing the horizontal force plate 1301 and the vertical insertion rod 1302 to slide upward and reset, and controls the vertical insertion rod 1302 to re-engage with the key bar 6021, completing the installation and positioning of the newly replaced PE self-adhesive tape reel 6. Thus, in the process of replacing and disassembling the PE self-adhesive tape reel 6, this utility model only requires the hand to rotate clockwise. The simple actions of turning the knob 1401, driving the swing plate 14, and releasing the knob 1401 by hand can be used in conjunction with the spring on the vertical track shaft 7011 to drive the T-shaped positioning piece 13 to slide up and down to lock and unlock the new and old PE self-adhesive tape reels 6. Compared with the existing technology of using threaded locking parts (such as large-diameter nuts) to position and install the PE self-adhesive tape reels 6, this can save the tedious steps of turning the threaded locking parts multiple times in both directions to tighten and loosen them when replacing and disassembling the PE self-adhesive tape reels 6, which helps to indirectly improve the replacement efficiency of the PE self-adhesive tape reels 6.

[0030] When the two PE self-adhesive tapes 601 are adhered to the two sides of the protective film 11, their inner edges form two positioning cutting lines on the protective film 11. The two cutting blades 15 can refer to these two positioning cutting lines to perform stable and precise cutting of the two side edges of the protective film 11.

[0031] When the two PE self-adhesive tapes 601 are used to adhere to the protective film 11, there may be a situation where the adhesion is misaligned and needs to be readjusted. In this situation, the fusible tear strip 6011 can be easily pulled by hand to quickly tear off the PE self-adhesive tape 601, and then the adhesion position of the PE self-adhesive tape 601 can be readjusted.

[0032] It is worth noting that the selection of electrical control components, the connection and wiring methods between electrical control components, the connection and wiring methods between electrical control components and the geared motor 12 and the drive assembly 9, and the control principles of electrical control components on the geared motor 12 and the drive assembly 9 are all existing technologies for technicians engaged in equipment electrification modification, design, upgrading and testing in this field, and therefore will not be elaborated here.

[0033] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0034] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An edge pre-cutting device for easy-to-position and tear-off PE self-adhesive protective film, comprising a longitudinal rotating shaft (701) and a protective film (11), wherein two PE self-adhesive tape reels (6) are symmetrically fitted at both ends of the longitudinal rotating shaft (701), and circular mounting holes (7013) are provided in both ends, and keyways (7012) are provided on the outer periphery of both ends. Its features are, The T-shaped positioning component (13) that slides vertically is installed inside the circular mounting hole (7013) by a spring push. The T-shaped positioning component (13) is composed of a horizontal force plate (1301) and a vertical insertion rod (1302) welded together. A drive swing plate (14) is rotatably installed on the inner circumference of the circular mounting hole (7013). A knob (1401) is fixedly connected to the outer end of the rotating shaft of the drive swing plate (14). A key strip (6021) is formed on the inner circumference of the shaft cylinder (602) at the center of the PE self-adhesive tape reel (6). The end of the vertical shaft (701) is sleeved and fitted, and the key strip (6021) is inserted and assembled with the keyway (7012); the vertical insert rod (1302) passes through the peripheral wall of the end of the vertical shaft (701) and is inserted and fitted with the key strip (6021); the PE self-adhesive tape (601) unwound and pulled from the two PE self-adhesive tape reels (6) is adhered and fixed to the two side edges of the protective film (11), and the inner circumference of the wound PE self-adhesive tape (6011) is connected with equally spaced fuzzy tear strips (6011).

2. The PE self-adhesive protective film edge pre-cutting device for easy positioning and tearing according to claim 1, characterized in that, When the PE self-adhesive tape (601) wound on the PE self-adhesive tape reel (6) is pulled out and laid flat to adhere to the protective film (11), the purplish tear strip (6011) is located on the top side of the PE self-adhesive tape (601) in the unfolded and laid-flat state.

3. The edge pre-cutting device for easily positioned and peelable PE self-adhesive protective film according to claim 1, characterized in that, The circular mounting hole (7013) has two vertical track shafts (7011) symmetrically fixed inside, and the horizontal force plate (1301) is in sliding fit with the two vertical track shafts (7011); The spring that pushes the T-shaped positioning member (13) is mounted on the vertical track shaft (7011) and is compressed and clamped between the horizontal force plate (1301) and the inner circumference of the circular mounting hole (7013).

4. The edge pre-cutting device for easily positioned and peelable PE self-adhesive protective film according to claim 1, characterized in that, The outer end of the drive swing plate (14) shaft and the knob (1401) both protrude from the circular mounting hole (7013).

5. The edge pre-cutting device for easily positioned and peelable PE self-adhesive protective film according to claim 1, characterized in that, It also includes a frame base (1), and two rollers are symmetrically rotated and installed above the two ends of the frame base (1), one of which is a protective film roller (2) and the other is a protective film take-up roller (3). The top middle part of the two long side rods of the frame base (1) is symmetrically welded with two π-shaped frames (4). The two ends of the horizontal beam plate at the top of the two π-shaped frames (4) are symmetrically rotated and installed with two guide rollers (8). The height of the guide rollers (8) is higher than that of the rolling roller.

6. The edge pre-cutting device for easily positioned and peelable PE self-adhesive protective film according to claim 5, characterized in that, The protective film (11) drawn from the protective film roller (2) passes through two guide rollers (8) in sequence, and the first end of the protective film (11) is connected to the protective film take-up roller (3); The portion of the protective film (11) located between the two guide rollers (8) has a stretched and flat structure.

7. The edge pre-cutting device for easily positioned and peelable PE self-adhesive protective film according to claim 5, characterized in that, Two tandem vertical support frames (401) are welded to the top side of the horizontal beam plate at the top of the two π-shaped frames (4), and two vertical guide shafts (4011) are symmetrically welded to the bottom side of the longitudinal beam plate at the top of the tandem vertical support frame (401). A U-shaped sliding frame (7) is slidably mounted on two vertical guide shafts (4011), and a spring is compressed and fitted on the part of the two vertical guide shafts (4011) located between the U-shaped sliding frame (7) and the U-shaped vertical support frame (401). A longitudinally mounted rotating shaft (701) is rotatably installed through the bottom part of the two vertical side rods of a U-shaped sliding frame (7). Two cutting blades (15) are symmetrically fixed at the bottom part of the two vertical side rods of another U-shaped sliding frame (7). The bottom conical blades of the two cutting blades (15) are used to pierce and cut the two side edges of the protective film (11). After the two side edges are cut off, two waste edge strips are formed.

8. The edge pre-cutting device for easily positioned and peelable PE self-adhesive protective film according to claim 7, characterized in that, Two waste edge take-up reels (5) are symmetrically rotated and installed below one of the guide rollers (8). The two waste edge take-up reels (5) are used to wind and collect the two waste edge strips.

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