Adhesive film production equipment and production method thereof

Abstract

The present invention relates to the field of plastic molding technology, specifically to a kind of adhesive film production equipment and a production method thereof; it comprises an injection molding body and a molding column vertically passing through the center of the injection molding body; the molding column is aligned with the inner edge of an annular molding groove; a cooling component is provided below the molding groove; the cooling component is used to cool the annular film on the outer wall of the molding column; the injection molding body extrude the molten raw material along the molding groove and sleeve it on the molding column; a support ring is concentrically sleeved on the lower outer wall of the molding column; the support ring is connected to the bracket on the injection molding body through a connecting rod; a ring sleeve is sleeved on the outer wall of the support ring; threaded holes are penetrated through the inner and outer walls of the ring sleeve; the present invention connects a plurality of cutters circumferentially on the outer side of the molding column, thereby cutting the annular film into adhesive films of different widths by changing the circumferential position of the cutters, thereby meeting the production requirements of adhesive films of different widths and improving the application range of adhesive film production equipment.

Description

Technical Field

[0001] The invention relates to the technical field of plastic molding, in particular to a film production device and a production method thereof. Background Art

[0002] Casting is a common film production method, usually used to make EVA film. In this process, the film is squeezed into shape by an extruder, and then stretched and shaped by a series of rollers. Calendering refers to the process of applying a certain pressure and temperature during the stretching process to make the film meet the expected requirements in terms of size and thickness. During the calendering process, a certain amount of pressure is usually applied to ensure the uniformity and dimensional accuracy of the film. These pressures may cause stress inside and on the surface of the film, especially when the film structure is more complex or the thickness is larger. These stresses may affect the performance and stability of the film. In order to reduce the adverse effects of stress generated during the calendering process on the performance of the film, a stress relief process is required before the final winding equipment.

[0003] For this purpose, a special film production equipment has been developed in the industry, which enables the extruder to extrude the molten raw material along the annular molding groove. The annular film extruded into a certain thickness will adhere to the molding rod with an adapted inner diameter, so that the annular film is solidified by the surrounding cold air and the cold conduction in the molding rod in the process of not being easy to shake. The formed annular film will move along the axial direction of the molding rod and be cut into a film by the corresponding cutting knife, and the film will finally be wound up by the winding roller; although this equipment solves the stress problem of film production, the molding rod and the annular molding groove are fixed, so after the cutting knife cuts and unfolds it, the width of the formed film is fixed, which cannot meet the production needs of films of different widths.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes a film production device and a production method thereof, which solve the above technical problems. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, the present invention proposes a film production equipment and a production method thereof. The present invention connects a plurality of cutters circumferentially and movably on the outer side of a forming column, so that the annular film can be cut into films of different widths by changing the circumferential positions of the cutters, thereby meeting the production requirements of films of different widths and improving the application scope of the film production equipment.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the film production equipment described in the present invention comprises an injection molding body and a molding column vertically passing through the center of the injection molding body; the molding column is aligned with the inner edge of the annular molding groove; a cooling component is provided below the molding groove; the cooling component is used to cool the annular film on the outer wall of the molding column; the injection molding body extrude the molten raw material along the molding groove and sleeve it on the molding column; a support ring is concentrically sleeved on the lower outer wall of the molding column; the support ring is connected to the bracket on the injection molding body through a connecting rod; a ring sleeve is sleeved on the outer wall of the support ring; threaded holes are penetrated through the inner and outer walls of the ring sleeve; bolts are connected to the inner threads of the threaded holes; the outer wall of the ring sleeve is fixedly connected to a Y-shaped bar; the Y-shaped bar is rotatably connected to a cutter away from the inner side of the ring sleeve; the outer wall of the Y-shaped bar is fixedly connected to a motor; the motor output shaft is fixedly connected to the center of the cutter; there are multiple cutters; and the multiple cutters can approach the outer wall of the molding column when the ring sleeve rotates.

[0007] Preferably, an avoidance groove is provided on the lower outer wall of the forming column; a plurality of the avoidance grooves are evenly distributed around the center of the forming column; an avoidance block is movably connected in the avoidance groove; the avoidance block is connected to the bottom of the avoidance groove by a spring; the avoidance block is connected to the bottom of the avoidance groove by a limiting rope; the side of the avoidance block away from the spring is flush with the outer wall of the forming column.

[0008] Preferably, a movable groove is provided on the lower groove wall of the avoidance groove, which passes through the forming column; a movable bar is movably connected in the movable groove; the upper end of the movable bar is fixedly connected to the avoidance block; the lower end of the movable bar protrudes out of the movable groove; the center thread of the lower surface of the forming column is connected to a screw rod; the lower end of the screw rod is fixedly connected to a locking plate; the lower surface of the locking plate is fixedly connected to a knob; the outer diameter of the locking plate is adapted to the outer wall of the forming column.

[0009] Preferably, turntables are symmetrically provided on both sides of the cutter; the Y-shaped strip is fixedly connected to the extension plate at an upper position away from the ring sleeve at one end; the turntable is rotatably connected to the extension plate; the turntable can contact the annular film on the outer wall of the forming column after the cutter part is inserted into the avoidance groove; the position where the turntable contacts the annular film is at the same height in the vertical direction as the position where the cutter cuts off the annular film.

[0010] Preferably, the curved outer wall of the turntable is evenly provided with shifting grooves; a shifting block is movably connected in the shifting groove; the shifting block extends out of the shifting groove notch under the pulling of an elastic member in the shifting groove; and the shifting block can be retracted into the shifting groove under pressure.

[0011] Preferably, the plurality of shifting grooves are evenly distributed around the central axis of the turntable; the shifting groove is in the shape of an elongated strip, with one end of the shifting groove close to the cutter and the other end away from the cutter; the distance from the bottom of the shifting groove to the central axis of the turntable decreases as the distance from the cutter increases; the shifting block is slidably connected to the bottom of the shifting groove; a side of the shifting block close to the cutter is connected to the wall of the shifting groove by an elastic member; the elastic member is an elastic rope.

[0012] Preferably, an electromagnet is eccentrically embedded on a side of the turntable close to the cutter; and the electromagnets on both sides of the cutter have opposite magnetic properties.

[0013] A method for producing an adhesive film, which is applicable to the above-mentioned adhesive film production equipment, and the steps of the method are as follows:

[0014] S1: Control the ring sleeve to move along the circumference of the support ring. The support ring is concentric with the forming column, and the support ring is connected to the bracket through a connecting rod, so that the ring sleeve can move circumferentially around the forming column. During the movement of the ring sleeve, the corresponding Y-shaped bar and the cutter will move accordingly. After the cutter moves to a suitable position with the ring sleeve, the ring sleeve is rotated. During the rotation of the ring sleeve, the Y-shaped bar and the cutter will move toward the outer wall of the forming column, so that the edge of the cutter is inserted into the corresponding avoidance groove. Then, the corresponding bolt is tightened. After being tightened, the end of the bolt will be pressed against the outer wall of the support ring, so that the position of the ring sleeve is locked and cannot move, and the cutter is started to rotate;

[0015] S2: Pour the raw material into the melting cylinder, and the driving component will drive the spiral plate to rotate, so that the spiral plate extrude the molten raw material along the annular forming groove to form an annular film, and the annular film will be sleeved on the outer wall of the forming column with a corresponding inner diameter. The annular film will pass through the cooling component under traction, so that the annular film can be solidified, and the solidified annular film will be pulled down and passed through the avoidance groove;

[0016] S3: The turntable rotates under the traction of the annular film, and the rotating turntable drives the multiple shifting grooves to rotate. The shifting blocks contact the outer wall of the annular film as the shifting grooves rotate, so that the shifting blocks can move downward along the inclined surface of the bottom of the shifting grooves during the pressure process. The shifting blocks will move away from the cutter and pull the connected elastic rope. In the process of moving away from the cutter, the shifting blocks will drive the annular film to be pulled away from the cutter through friction; the two corresponding shifting blocks will tighten the annular film at the cutting position of the cutter, and cooperate with the rotation of the cutter to complete the cutting process;

[0017] S4: After the annular film is cut, a rubber film is formed, and the rubber film moves downward and is rolled up onto a rotating winding roller. The winding roller rotates to continuously provide traction to the annular film, so that the annular film is continuously extruded by the injection molding body and moves downward.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention connects a plurality of cutters circumferentially and movably on the outer side of the forming column, thereby changing the circumferential position of the cutters to cut the annular film into films of different widths, thereby meeting the production requirements of films of different widths and improving the application range of the film production equipment.

[0020] 2. In the present invention, the locking disk will contact the lower end of all the movable bars during the upward movement, and the movable bars will be pressed tightly under the contact with the upper surface of the locking disk, so that the movable bars are locked. In this way, the avoidance block in the avoidance groove is locked. On the one hand, the avoidance block flush with the outer wall of the forming column is more stable. On the other hand, it also prevents the spring from driving the avoidance block close to the cutter and causing damage, thereby achieving the protection of the avoidance block and further improving the stability of the film production equipment.

[0021] 3. In the present invention, the shifting block will drive the annular film to be pulled in the direction away from the cutter through friction during the process of moving away from the cutter. Turntables are provided on both sides of the cutter. In this way, when the two corresponding shifting blocks on the two turntables move away from each other, the two corresponding shifting blocks will tighten the annular film at the cutting position of the cutter, thereby preventing the wrinkles of the annular film from affecting the incision made by the cutter, thereby making the edge of the cut film smoother and improving the quality of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 is a cross-sectional view of the present invention;

[0026] Figure 4 is a three-dimensional diagram of a portion of the forming column and the surrounding cutter of the present invention;

[0027] Figure 5 yes Figure 4 A cross-sectional view of

[0028] Figure 6 It is a three-dimensional diagram of the cutter and the turntable in the present invention;

[0029] Figure 7 is a cross-sectional view of the turntable of the present invention;

[0030] Figure 8 is a flow chart of the method of the present invention;

[0031] In the figure: injection molding body 1, cooling assembly 11, bracket 12, molding column 2, avoidance groove 21, avoidance block 22, spring 23, limit rope 24, movable groove 25, movable bar 26, screw rod 27, locking plate 28, knob 29, support ring 3, connecting rod 31, ring sleeve 32, threaded hole 33, bolt 34, Y-shaped bar 35, cutter 36, motor 37, extension plate 38, turntable 4, shifting groove 41, shifting block 42, elastic member 43, electromagnet 44. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 8 As shown, the present invention includes the following embodiments: Embodiment 1:

[0034] A film production device comprises an injection molding body 1 and a molding column 2 vertically passing through the center of the injection molding body 1; the molding column 2 is aligned with the inner edge of an annular molding groove; a cooling component 11 is provided below the molding groove; the cooling component 11 is used to cool the annular film on the outer wall of the molding column 2; the injection molding body 1 extrude the molten raw material along the molding groove and sleeve it on the molding column 2; a support ring 3 is concentrically sleeved on the lower outer wall of the molding column 2; the support ring 3 is connected to the bracket 12 on the injection molding body 1 through a connecting rod 31; The outer wall of the support ring 3 is sleeved with a ring sleeve 32; the inner and outer walls of the ring sleeve 32 are penetrated with threaded holes 33; the inner thread of the threaded hole 33 is connected to a bolt 34; the outer wall of the ring sleeve 32 is fixedly connected to a Y-shaped bar 35; the Y-shaped bar 35 is rotatably connected to a cutter 36 away from the inner side of the ring sleeve 32; the outer wall of the Y-shaped bar 35 is fixedly connected to a motor 37; the output shaft of the motor 37 is fixedly connected to the center of the cutter 36; there are multiple cutters 36 and ring sleeve 32; the multiple cutters 36 can approach the outer wall of the forming column 2 when the ring sleeve 32 rotates.

[0035] During operation, the staff pours the raw material into the melting cylinder, which is connected to the injection cavity of the injection molding body 1. The driving component drives the spiral plate to rotate, so that the spiral plate extrude the molten raw material along the annular molding groove to form an annular film. The annular film is sleeved on the outer wall of the molding column 2 with a corresponding inner diameter. The annular film is pulled through the cooling component 11. The annular film is solidified by the double cooling of the cold air of the cooling component 11 and the cooling channel inside the outer wall of the molding column 2. The solidified annular film is pulled downward. Since the molding column 2 is vertically arranged, the opening vertical groove of the annular groove faces downward, so the annular film is pulled downward from the annular groove. The thickness of the extruded annular film is more uniform. Before the injection molding body 1 is activated, the staff will control the ring sleeve 32 to move along the circumferential direction of the support ring 3. The support ring 3 is concentric with the molding column 2, and the support ring 3 is connected to the bracket 12 through the connecting rod 31, so that the ring sleeve 32 can move circumferentially around the molding column 2. During the movement of the ring sleeve 32, the corresponding Y-shaped strip 35 and the cutter 36 will be driven to move accordingly, thereby changing the position of the cutter 36 on the circumferential direction of the molding column 2. The position of the ring sleeve 32 on the support ring 3 directly affects the position of the cutter 36 on the annular film. There are multiple cutters 36, so that two adjacent cutters 36 are 6 can control the width of the film after molding. Specifically, after the cutter 36 moves to a suitable position with the ring sleeve 32, the ring sleeve 32 is rotated. During the rotation of the ring sleeve 32, the Y-shaped bar 35 and the cutter 36 are driven to move toward the outer wall of the molding column 2, so that the cutter 36 contacts the molding column 2, and then the corresponding bolt 34 is screwed. After the bolt 34 is screwed, the end of the bolt 34 will be against the outer wall of the support ring 3, so that the position of the ring sleeve 32 is locked and cannot move. In this way, the cutter 36 is locked. Then, when the injection molding body 1 is enabled, the motor 37 is started to drive the cutter 36 to rotate. Note that the cutter 3 The rotation direction of the forming column 2 is from top to bottom. In this way, when the cooled annular film passes through a plurality of cutters 36, the cutters 36 will cut the annular film. In addition, the rotating cutters 36 will also drive the annular film to move downward, so that the annular film is smoothly pulled downward. Since the annular film is cut by the cutters 36 at the corresponding positions to form a rubber film, the width requirement of the rubber film is reflected in the adjustment of the positions of the ring sleeve 32 and the cutters 36, thereby improving the application range of the rubber film production equipment. As the rubber film moves downward, the rubber film will be rolled up onto the winding roller, and the winding roller will also give the rubber film traction at the same time, so that the annular film continues to move downward;

[0036] In this embodiment, a plurality of cutters 36 are movably connected circumferentially on the outer side of the forming column 2, so that the annular film can be cut into films of different widths by changing the circumferential positions of the cutters 36, thereby meeting the production requirements of films of different widths and improving the application range of the film production equipment. Embodiment 2:

[0037] The forming column 2 is provided with an avoidance groove 21 on the lower outer wall; a plurality of the avoidance grooves 21 are evenly distributed around the center of the forming column 2; an avoidance block 22 is movably connected in the avoidance groove 21; the avoidance block 22 is connected to the bottom of the avoidance groove 21 by a spring 23; the avoidance block 22 is connected to the bottom of the avoidance groove 21 by a limiting rope 24; the side of the avoidance block 22 away from the spring 23 is flush with the outer wall of the forming column 2.

[0038] In this embodiment, a movable groove 25 is provided on the lower groove wall of the avoidance groove 21, which penetrates the forming column 2; a movable bar 26 is movably connected in the movable groove 25; the upper end of the movable bar 26 is fixedly connected to the avoidance block 22; the lower end of the movable bar 26 protrudes out of the movable groove 25; the center thread of the lower surface of the forming column 2 is connected to a screw rod 27; the lower end of the screw rod 27 is fixedly connected to a locking plate 28; the lower surface of the locking plate 28 is fixedly connected to a knob 29; the outer diameter of the locking plate 28 is adapted to the outer wall of the forming column 2.

[0039] When working, before adjusting the cutter 36, the cutter 36 is in a non-rotating state. After the cutter 36 moves to the corresponding position on the support ring 3 with the ring sleeve 32, the rotating ring sleeve 32 drives the Y-shaped bar 35 and the cutter 36 to approach the forming column 2, and the cutter 36 will align with the corresponding avoidance groove 21 and squeeze the avoidance block 22 in the corresponding avoidance groove 21 toward the center of the forming column 2, so that the avoidance groove 21 is exposed, and part of the edge of the cutter 36 will enter the avoidance groove 21, thereby improving the cutting effect of the cutter 36 on the annular film. With the squeezing of the cutter 36, the avoidance block 22 will approach the bottom of the avoidance groove 21 for avoidance, and the avoidance block 22 will compress the spring 23, and the side of the avoidance block 22 that is not squeezed by the cutter 36 away from the forming column 2 is flush with the outer wall of the forming column 2, thereby ensuring the integrity of the outer wall of the forming column 2, reducing the friction between the annular film and the outer wall of the forming column 2, making the annular film traction smoother, and the avoidance block When the locking plate 28 is moved upward, the locking plate 28 will be moved upward, and the locking plate 28 will be in contact with the lower end of all the movable bars 26 during the upward movement. The movable bar 26 will be pressed tightly under the contact with the upper surface of the locking plate 28, so that the movable bar 26 is locked. In this way, the avoidance block 22 in the avoidance groove 21 is locked. On the one hand, the avoidance block 22 flush with the outer wall of the forming column 2 is more stable. On the other hand, it also prevents the spring 23 from driving the avoidance block 22 close to the cutter 36 to cause damage, thereby protecting the avoidance block 22 and further improving the stability of the film production equipment. Embodiment 3:

[0040] Turntables 4 are symmetrically provided on both sides of the cutter 36; the Y-shaped strip 35 is fixedly connected to the extension plate 38 at the upper position of one end away from the ring sleeve 32; the turntable 4 is rotatably connected to the extension plate 38; the turntable 4 can contact the annular film on the outer wall of the forming column 2 after the cutter 36 is partially inserted into the avoidance groove 21; the position where the turntable 4 contacts the annular film is at the same height in the vertical direction as the position where the cutter 36 cuts off the annular film.

[0041] In this embodiment, the curved outer wall of the turntable 4 is evenly provided with shifting grooves 41; the shifting block 42 is movably connected in the shifting groove 41; the shifting block 42 extends out of the notch of the shifting groove 41 under the pull of the elastic member 43 in the shifting groove 41; the shifting block 42 can be retracted into the shifting groove 41 under pressure.

[0042] In this embodiment, the plurality of shifting grooves 41 are evenly distributed around the central axis of the turntable 4; the shifting groove 41 is in an elongated strip shape, with one end of the shifting groove 41 close to the cutter 36 and the other end away from the cutter 36; the distance from the bottom of the shifting groove 41 to the central axis of the turntable 4 decreases as the distance from the cutter 36 increases; the shifting block 42 is slidably connected to the bottom of the shifting groove 41; a side of the shifting block 42 close to the cutter 36 is connected to the wall of the shifting groove 41 via an elastic member 43; the elastic member 43 is an elastic rope.

[0043] In this embodiment, the electromagnet 44 is eccentrically embedded in a surface of the turntable 4 close to the cutter 36 ; the electromagnets 44 on both sides of the cutter 36 have opposite magnetic properties.

[0044] During operation, when the annular film passes over the avoidance groove 21 under traction, the cutter 36 inserted into the avoidance groove 21 will rotate to cut the annular film. When the cutter 36 cuts the annular film, the towed annular film moves between the turntable 4 and the outer wall of the forming column 2. Friction is generated between the annular film and the curved outer wall of the turntable 4, so that the turntable 4 can rotate. During the rotation of the turntable 4, the electromagnet 44 is triggered, and the electromagnets 44 on the turntables 4 on both sides of the cutter 36 attract each other. The electromagnet 44 is eccentrically embedded in the end face of the turntable 4, so the two turntables 4 can rotate synchronously under the magnetic force of the electromagnet 44, and the electromagnets 44 of the two turntables 4 are only separated by The cutter 36 ensures the magnetic transmission effect, and the other electromagnets 44 around it are not affected by each other. During the rotation of the turntable 4, the multiple slots 41 on the outer wall will be driven to rotate. The slots 41 will drive the shift block 42 to rotate as the turntable 4 rotates. The shift block 42 contacts the outer wall of the annular membrane as the slots 41 rotate. The shift block 42 protrudes from the slots 41 and approaches the cutter 36. As the shift block 42 is squeezed by the annular membrane, the shift block 42 moves with the bottom of the slot 41. Since the bottom of the slot 41 is inclined, the distance between the bottom of the slot 41 and the central axis of the turntable 4 decreases as it moves away from the cutter 36. In this way, the shift block 42 can be pressed during the pressure process. The shift block 42 moves downward along the inclined surface of the bottom of the shift groove 41, and the shift block 42 will move away from the cutter 36 and pull the connected elastic rope. In the process of moving away from the cutter 36, the shift block 42 will drive the annular film to be pulled away from the cutter 36 through friction. Turntables 4 are provided on both sides of the cutter 36. In this way, when the two corresponding shift blocks 42 on the two turntables 4 move away from each other, the two corresponding shift blocks 42 will shift and tighten the annular film at the cutting position of the cutter 36, thereby preventing the wrinkles of the annular film from affecting the incision made by the cutter 36, thereby making the edge of the cut film smoother and improving the quality of the film; the turntable 4 is constantly rotating under the friction generated by the traction of the annular film. The turntable 4 can cyclically drive the shift block 42 to contact the annular film. In this way, when the cutter 36 is cutting the annular film, the turntable 4 can drive the corresponding shift block 42 to cyclically work, so as to achieve cutting under continuous tension of the annular film, and further improve the annular film slitting effect; when the shift block 42 is squeezed and returned to the shift groove 41 by the annular film, the corresponding elastic rope will be pulled. The existence of the elastic rope makes the shift block 42 suitable for annular films of different thicknesses. When the shift block 42 moves away from the annular film as the turntable 4 rotates, the elastic rope will pull the shift block 42 to move closer to the cutter 36, so that the shift block 42 in the shift groove 41 is reset, and prepares for the next contact with the annular film. Embodiment 4:

[0045] A method for producing an adhesive film, which is applicable to the above-mentioned adhesive film production equipment, and the steps of the method are as follows:

[0046] S1: Control the ring sleeve 32 to move along the circumference of the support ring 3. The support ring 3 is concentric with the forming column 2, and the support ring 3 is connected to the bracket 12 through the connecting rod 31, so that the ring sleeve 32 can move circumferentially around the forming column 2. During the movement of the ring sleeve 32, the corresponding Y-shaped bar 35 and the cutter 36 will be driven to move accordingly. After the cutter 36 moves to a suitable position with the ring sleeve 32, the ring sleeve 32 is rotated. During the rotation of the ring sleeve 32, the Y-shaped bar 35 and the cutter 36 will be driven to move toward the outer wall of the forming column 2, so that the edge of the cutter 36 is inserted into the corresponding avoidance groove 21, and then the corresponding bolt 34 is screwed. After being screwed, the end of the bolt 34 will be pressed against the outer wall of the support ring 3, so that the position of the ring sleeve 32 is locked and cannot move, and the cutter 36 is started to rotate;

[0047] S2: Pour the raw material into the melting cylinder, and the driving component will drive the spiral plate to rotate, so that the spiral plate extrude the molten raw material along the annular forming groove to form an annular film, and the annular film will be sleeved on the outer wall of the forming column 2 with a corresponding inner diameter, and the annular film will pass through the cooling component 11 under traction, so that the annular film can be solidified, and the solidified annular film will be pulled down and passed through the avoidance groove 21;

[0048] S3: The turntable 4 rotates under the traction of the annular film, and the rotating turntable 4 drives the plurality of shifting grooves 41 to rotate. The shifting blocks 42 contact the outer wall of the annular film as the shifting grooves 41 rotate, so that the shifting blocks 42 can move downward along the inclined surface of the bottom of the shifting grooves 41 during the pressure process. The shifting blocks 42 move away from the cutter 36 and pull the connected elastic rope. In the process of moving away from the cutter 36, the shifting blocks 42 drive the annular film to be pulled in the direction away from the cutter 36 through friction; the two corresponding shifting blocks 42 tighten the annular film at the cutting position of the cutter 36, and cooperate with the rotation of the cutter 36 to complete the cutting process;

[0049] S4: After the annular film is cut, a rubber film is formed, which moves downward and is rolled up onto a rotating winding roller. The winding roller rotates to continuously provide traction to the annular film, so that the annular film is continuously extruded by the injection molding body 1 and moves downward.

[0050] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A film production device, comprising an injection molding body (1) and a molding column (2) vertically passing through the center of the injection molding body (1); the molding column (2) is aligned with the inner edge of an annular molding groove; a cooling component (11) is provided below the molding groove; the cooling component (11) is used to cool the annular film on the outer wall of the molding column (2); the injection molding body (1) extrude the molten raw material along the molding groove and sleeve it on the molding column (2); the characteristics are: A support ring (3) is concentrically sleeved on the lower outer wall of the molding column (2); the support ring (3) is connected to the bracket (12) on the injection molding body (1) through a connecting rod (31); a ring sleeve (32) is sleeved on the outer wall of the support ring (3); threaded holes (33) are penetrated through the inner and outer walls of the ring sleeve (32); the inner thread of the threaded hole (33) is connected to a bolt (34); the outer wall of the ring sleeve (32) is fixedly connected to a Y-shaped bar (35); the Y-shaped bar (35) is rotatably connected to a cutter (36) away from the inner side of the ring sleeve (32); the outer wall of the Y-shaped bar (35) is fixedly connected to a motor (37); the output shaft of the motor (37) is fixedly connected to the center of the cutter (36); there are multiple cutters (36); the multiple cutters (36) can approach the outer wall of the molding column (2) when the ring sleeve (32) rotates; The molding column (2) is provided with an avoidance groove (21) on the lower outer wall; a plurality of the avoidance grooves (21) are evenly distributed around the center of the molding column (2); an avoidance block (22) is movably connected in the avoidance groove (21); the avoidance block (22) is connected to the bottom of the avoidance groove (21) via a spring (23); the avoidance block (22) is connected to the bottom of the avoidance groove (21) via a limiting rope (24); the side of the avoidance block (22) away from the spring (23) is flush with the outer wall of the molding column (2); A turntable (4) is symmetrically provided on both sides of the cutter (36); the upper end of the Y-shaped strip (35) away from the ring sleeve (32) is fixedly connected to an extension plate (38); the turntable (4) is rotatably connected to the extension plate (38); The curved outer wall of the turntable (4) is evenly provided with shifting grooves (41); the shifting blocks (42) are movably connected in the shifting grooves (41); The plurality of shifting grooves (41) are evenly distributed around the central axis of the turntable (4); the shifting groove (41) is in an elongated strip shape, with one end of the shifting groove (41) close to the cutter (36) and the other end away from the cutter (36); the distance from the bottom of the shifting groove (41) to the central axis of the turntable (4) decreases as the distance from the cutter (36) increases; the shifting block (42) is slidably connected to the bottom of the shifting groove (41); a surface of the shifting block (42) close to the cutter (36) is connected to the wall of the shifting groove (41) via an elastic member (43).

2. The adhesive film production equipment according to claim 1, characterized in that: The avoidance groove (21) is provided with a movable groove (25) on the lower groove wall penetrating the forming column (2); the movable groove (25) is movably connected to a movable bar (26); the movable bar (26) is fixedly connected to the avoidance block (22) at the upper end; the movable bar (26) protrudes out of the movable groove (25) at the lower end; the center thread of the lower surface of the forming column (2) is connected to a screw rod (27); the screw rod (27) is fixedly connected to a locking plate (28) at the lower end; the lower surface of the locking plate (28) is fixedly connected to a knob (29); the outer diameter of the locking plate (28) is adapted to the outer wall of the forming column (2).

3. The adhesive film production equipment according to claim 1, characterized in that: The turntable (4) can contact the annular film on the outer wall of the forming column (2) after the cutter (36) is partially inserted into the avoidance groove (21); the position where the turntable (4) contacts the annular film is at the same height in the vertical direction as the position where the cutter (36) cuts off the annular film.

4. The adhesive film production equipment according to claim 3, characterized in that: The shift block (42) extends out of the notch of the shift slot (41) when pulled by the elastic member (43) in the shift slot (41); the shift block (42) can be retracted into the shift slot (41) under pressure.

5. The adhesive film production equipment according to claim 4, characterized in that: The elastic member (43) is an elastic rope.

6. The adhesive film production equipment according to claim 5, characterized in that: An electromagnet (44) is eccentrically embedded in a surface of the turntable (4) close to the cutter (36); the electromagnets (44) on both sides of the cutter (36) have opposite magnetic properties.

7. A method for producing an adhesive film, the method being applicable to the adhesive film production equipment according to any one of claims 1 to 6, characterized in that: The steps of this method are as follows: S1: Control the ring sleeve (32) to move along the circumferential direction of the support ring (3), the support ring (3) is concentric with the forming column (2), and the support ring (3) is connected to the bracket (12) through the connecting rod (31), so that the ring sleeve (32) can move circumferentially around the forming column (2), and the movement of the ring sleeve (32) will drive the corresponding Y-shaped bar (35) and the cutter (36) to move accordingly. After the cutter (36) moves to a suitable position along with the ring sleeve (32), the ring sleeve (32) is rotated. During the rotation of the ring sleeve (32), the Y-shaped bar (35) and the cutter (36) are driven to move toward the outer wall of the forming column (2), so that the edge of the cutter (36) is inserted into the corresponding avoidance groove (21), and then the corresponding bolt (34) is screwed. After being screwed, the end of the bolt (34) will be pressed against the outer wall of the support ring (3), so that the position of the ring sleeve (32) is locked and cannot move, and the cutter (36) is started to rotate; S2: Pour the raw material into the melting cylinder, and the driving component drives the spiral plate to rotate, so that the spiral plate extrude the molten raw material along the annular forming groove to form an annular film, and the annular film is sleeved on the outer wall of the forming column (2) with a corresponding inner diameter. The annular film is pulled through the cooling component (11) so that the annular film is solidified, and the solidified annular film is pulled down and moves through the avoidance groove (21); S3: The turntable (4) rotates under the traction of the annular film, and the rotating turntable (4) drives the plurality of shifting grooves (41) to rotate. The shifting block (42) contacts the outer wall of the annular film as the shifting groove (41) rotates, so that the shifting block (42) can move downward along the inclined surface of the bottom of the shifting groove (41) during the pressure process. The shifting block (42) moves away from the cutter (36) and pulls the connected elastic rope. In the process of moving away from the cutter (36), the shifting block (42) drives the annular film to be pulled in a direction away from the cutter (36) through friction. The two corresponding shifting blocks (42) tighten the annular film at the cutting position of the cutter (36), and cooperate with the rotation of the cutter (36) to complete the cutting process. S4: After the annular film is cut, a rubber film is formed, which moves downward and is rolled up onto a rotating winding roller. The winding roller rotates to continuously provide traction for the annular film, so that the annular film is continuously extruded by the injection molding body (1) and moves downward.

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