Cutting device for co-extrusion film production

Abstract

The invention relates to the technical field of cut-off devices, and discloses a cut-off device for co-extrusion film production, which comprises a main body plate, a material groove for materials to pass through is formed in the middle of the main body plate, a moving plate group is further arranged on the side part of the main body plate, and a driving assembly for controlling the moving plate group to move is mounted on the other side part of the main body plate; a blade is connected to the side portion of the movable plate set, a mounting box is arranged on the side portion of the main body plate, the driving assembly is arranged in the mounting box, through the arrangement of the driving assembly, a co-extrusion film is manually placed in a material groove, a servo motor is started, and the servo motor rotates to drive a first rotating shaft and a first gear on the outer side of the first rotating shaft to rotate; a first gear, a second gear and a third gear are in meshing transmission and drive two rack plates to move at the same time, so that a connecting plate drives a blade to cut a co-extrusion film, the two rack plates can move synchronously through meshing transmission of the gears, and the problem of desynchrony possibly occurring in a traditional double-air-cylinder scheme is solved; and the effect that the cut edge is neat and free of deviation is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cutting devices, in particular to a cutting device for co-extrusion film production. Background Art

[0002] Co-extruded film is a multi-layer composite plastic film material produced by co-extrusion technology. This technology allows two or more different plastic materials to be extruded through a common extruder head at the same time to form a film material with a multi-layer structure. Each layer of material can have different physical properties and chemical compositions, such as different heat resistance, chemical resistance or optical properties, thus giving the final product diverse functions. Co-extruded film is widely used in packaging, building materials, medical treatment, agriculture and other fields. During the manufacturing process, different plastic particles are first heated and melted in their respective extruders, then collected through a multi-channel die head, and finally extruded into a film at the same time. This technology ensures that the layers of materials are closely combined at the molecular level to form a uniform and stable structure. Since each layer of material can be optimized for a specific function, such as the inner layer can be designed as a food contact safe material, the outer layer can enhance tear resistance, and the middle layer can provide gas barrier properties, the co-extruded film performs well in terms of strength, transparency, moisture resistance, gas barrier properties, etc. The advantages of co-extruded film also include high production efficiency, high resource utilization and environmental friendliness. Due to the multi-layer structure, a small amount of high-performance material can achieve functions that are difficult to achieve with a single material, thereby reducing raw material consumption and costs.

[0003] At present, there is a cutting device for co-extrusion film production with a publication number of CN218110895U, which includes a frame, and electric push rods are respectively provided at the upper and lower ends of the frame, and the output end of the electric push rod extends into the interior of the frame. A moving block is provided at the output end of the electric push rod, and a sliding component is provided on the side wall of the moving block. The present invention adopts the above structure. During the production process of the co-extruded film, the co-extruded film is made to pass through the frame. When the co-extruded film needs to be cut, the moving block is driven to move by the electric push rod, and the position of the moving block is stabilized by the sliding assembly, so that the moving block can drive the two cutters to move toward each other, so that the cutters can play the role of cutting the co-extruded film. The inclined design of the cutter allows the cutter to play the role of scissors, and the co-extruded film is gradually cut off from left to right. Not only is the cutting effect good, the cutting is more thorough, and the tearing situation that affects the quality of the co-extruded film can be avoided, thereby avoiding the situation of partial co-extruded film being wasted. However, this scheme adopts two cylinders to drive the two cutters for cutting respectively. The use of two cylinders and two cutters will increase the hardware cost of the equipment, and may also increase the workload of maintenance and troubleshooting; therefore, it does not meet the existing needs. In this regard, we propose a cutting device for co-extruded film production. Summary of the invention

[0004] The present invention provides a cutting device for co-extrusion film production, which has the beneficial effect of two rack plates being able to move synchronously, solving the problem mentioned in the above background technology that two cylinders drive two cutters to cut respectively. The use of two cylinders and two cutters will increase the hardware cost of the equipment, and may also increase the workload of maintenance and troubleshooting.

[0005] The present invention provides the following technical solution: a cutting device for co-extrusion film production, comprising a main body plate, a material trough for material passing through is opened in the middle of the main body plate, a movable plate group is also arranged on the side of the main body plate, a driving component for controlling the movement of the movable plate group is installed on the other side of the side of the main body plate, a blade is connected to the side of the movable plate group, an installation box is arranged on the side of the main body plate, and the driving component is arranged inside the installation box.

[0006] As an optional solution of a cutting device for co-extrusion film production described in the present invention, the movable plate group includes a first movable plate and a second movable plate, the first movable plate is arranged on the side of the main plate, and the first movable plate is arranged above the material trough, the second movable plate is also arranged on the side of the main plate, and the second movable plate is arranged below the material trough.

[0007] As an optional solution of a cut-off device for co-extrusion film production described in the present invention, a cavity is arranged inside the installation box, a slot is opened on the side of the installation box, the slot is connected to the cavity, and the drive assembly is installed inside the cavity.

[0008] As an optional solution of a cutting device for co-extrusion film production described in the present invention, the first rotating shaft, the second rotating shaft and the third rotating shaft are respectively inserted into the side of the main body plate, the driving assembly includes a gear set and a rack plate, the gear set is arranged inside the cavity, and the rack plate is slidably engaged inside the groove.

[0009] As an optional solution of a cutting device for co-extrusion film production described in the present invention, the rack group includes a first gear, a second gear and a third gear, the first gear is sleeved on the outside of the first rotating shaft, the second gear is sleeved on the outside of the second rotating shaft, and the third rotating shaft is sleeved on the outside of the third rotating shaft, and two rack plates are provided, and the two rack plates are respectively meshed with the first gear and the third gear for transmission.

[0010] As an optional solution of a cutting device for co-extrusion film production described in the present invention, the first movable plate and the second movable plate are respectively connected to the side with a connecting plate, the other end of the connecting plate is connected to the side of the rack plate, the side of the installation box is connected to a servo motor, the output shaft of the servo motor is inserted into the side of the installation box, and the output shaft of the servo motor is connected to the end of the first rotating shaft.

[0011] As an optional solution of a cutting device for co-extrusion film production described in the present invention, the side of the connecting plate is connected to a fixed block, the side of the main plate is provided with a slide groove, the side of the fixed block is connected to a piston block, the slide groove is set as a piston groove, and the piston block is slidably engaged with the slide groove.

[0012] As an optional solution of a cut-off device for co-extrusion film production described in the present invention, a damping tube for slowing down the movement of the first movable plate and the second movable plate is installed inside the slide groove, a plurality of spacers are installed inside the damping tube, air holes are opened on the surface of the spacer block, a pulley is installed on the side of the fixed block, and the pulley is slidably matched with the damping tube.

[0013] The present invention has the following beneficial effects:

[0014] 1. The cut-off device for co-extruded film production, through the setting of the driving component, manually places the co-extruded film inside the material tank, starts the servo motor, and the servo motor rotates, driving the first rotating shaft and the first gear outside the first rotating shaft to rotate, the first gear, the second gear and the third gear are meshed for transmission, and at the same time drive the two rack plates to move, so that the connecting plate drives the blade to cut the co-extruded film, and realizes that the two rack plates can move synchronously through the gear meshing transmission, avoiding the possible asynchronous problem in the traditional double-cylinder solution, ensuring the effect of neat cutting edges and no deviation, and solving the problem that two cylinders drive two cutters for cutting respectively. The use of two cylinders and two cutters will increase the hardware cost of the equipment, and may also increase the workload of maintenance and troubleshooting.

[0015] 2. The cut-off device for the co-extrusion film production adopts the setting of the damping tube. The damping tube and the sliding cooperation of the side of the fixed block. When the rack plate drives the movable plate group to move, the piston block and the slide groove slide, and the pulley slides on the side of the damping tube. When the pulley slides, the force is applied to the damping tube. The air inside the damping tube goes to the next section along the air hole, which increases the resistance of the pulley, so that the longitudinal adjustment block moves slowly. The damping effect helps to more accurately control the moving speed and position of the movable plate group, improve the cutting accuracy, and ensure the consistency of each cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the partial cutaway structure of the present invention.

[0018] Figure 3 For the present invention Figure 1 A is an enlarged structural diagram of FIG.

[0019] Figure 4 It is a schematic diagram of the cutaway structure of the damping tube of the present invention.

[0020] In the figure: 110, main plate; 111, first rotating shaft; 112, second rotating shaft; 113, third rotating shaft; 120, material trough; 130, moving plate group; 131, first moving plate; 132, second moving plate; 133, cavity; 134, notch; 140, mounting cavity; 150, driving assembly; 151, gear group; 152, first gear; 153, second gear; 154, third gear; 155, rack plate; 160, connecting plate; 161, servo motor; 162, fixing block; 163, slide groove; 164, piston block; 170, damping tube; 171, partition; 172, air hole; 173, pulley; 200, mounting box; 400, blade. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1: This embodiment aims to solve the problem that two cylinders drive two cutters to cut respectively. Using two cylinders and two cutters will increase the hardware cost of the equipment and may also increase the workload of maintenance and troubleshooting. Please refer to Figure 1-4 A cutting device for co-extrusion film production includes a main body plate 110, a material trough 120 for material to pass through is opened in the middle of the main body plate 110, a moving plate group 130 is also arranged on the side of the main body plate 110, a driving assembly 150 for controlling the movement of the moving plate group 130 is installed on the other side of the side of the main body plate 110, a blade 400 is connected to the side of the moving plate group 130, an installation box 200 is arranged on the side of the main body plate 110, and the driving assembly 150 is arranged inside the installation box 200.

[0023] The moving plate group 130 includes a first moving plate 131 and a second moving plate 132. The first moving plate 131 is arranged on the side of the main plate 110 and above the material slot 120. The second moving plate 132 is also arranged on the side of the main plate 110 and below the material slot 120. A cavity 133 is arranged inside the installation box 200. A notch 134 is opened on the side of the installation box 200. The notch 134 is connected to the cavity 133. The driving assembly 150 is installed inside the cavity 133.

[0024] The first rotating shaft 111, the second rotating shaft 112 and the third rotating shaft 113 are respectively inserted into the side of the main body plate 110, and the driving assembly 150 includes a gear set 151 and a rack plate 155. The gear set 151 is arranged inside the cavity 133, and the rack plate 155 is slidably engaged inside the notch 134. The rack set includes a first gear 152, a second gear 153 and a third gear 154. The first gear 152 is sleeved on the outside of the first rotating shaft 111, the second gear 153 is sleeved on the outside of the second rotating shaft 112, and the third rotating shaft 113 is sleeved on the outside of the third rotating shaft 113. Two rack plates 155 are provided, and the two rack plates 155 are respectively meshed with the first gear 152 and the third gear 154 for transmission.

[0025] The first movable plate 131 and the second movable plate 132 are respectively connected to the side with connecting plates 160, the other end of the connecting plate 160 is connected to the side of the rack plate 155, the side of the mounting box 200 is connected to a servo motor 161, the output shaft of the servo motor 161 is inserted into the side of the mounting box 200, and the output shaft of the servo motor 161 is connected to the end of the first rotating shaft 111.

[0026] In this embodiment: through the setting of the driving component 150, the co-extruded film is manually placed inside the material slot 120, and the servo motor 161 is started. The servo motor 161 rotates, driving the first rotating shaft 111 and the first gear 152 outside the first rotating shaft 111 to rotate, and the first gear 152, the second gear 153 and the third gear 154 are engaged in transmission, and at the same time drive the two rack plates 155 to move, so that the connecting plate 160 drives the blade 400 to cut the co-extruded film, and realizes that the two rack plates 155 can move synchronously through gear meshing transmission, avoiding the possible asynchronous problem in the traditional dual-cylinder solution, ensuring the effect of neat cutting edges and no deviation, and solving the problem that two cylinders drive two cutters for cutting respectively. Using two cylinders and two cutters will increase the hardware cost of the equipment, and may also increase the workload of maintenance and troubleshooting.

[0027] Embodiment 2: This embodiment is intended to promote the solution of the problem of consistency of each cutting. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-4The side of the connecting plate 160 is connected to a fixed block 162, the side of the main plate 110 is provided with a slide groove 163, the side of the fixed block 162 is connected to a piston block 164, the slide groove 163 is provided as a piston groove, and the piston block 164 is slidably engaged with the slide groove 163. A damping tube 170 for slowing down the movement of the first movable plate 131 and the second movable plate 132 is installed inside the slide groove 163, a plurality of spacers are installed inside the damping tube 170, and air holes 172 are provided on the surface of the spacers, a pulley 173 is installed on the side of the fixed block 162, and the pulley 173 is slidably engaged with the damping tube 170.

[0028] In this embodiment: by setting the damping tube 170, the damping tube 170 and the sliding cooperation with the side of the fixed block 162, when the rack plate 155 drives the movable plate group 130 to move, the piston block 164 and the slide groove 163 slide, and the pulley 173 slides on the side of the damping tube 170. When the pulley 173 slides, the force is applied to the damping tube 170. The air inside the damping tube 170 goes to the next section along the air hole 172, and increases the resistance to the pulley 173, so that the longitudinal adjustment block moves slowly. The damping effect helps to more accurately control the moving speed and position of the movable plate group 130, improve the cutting accuracy, and ensure the consistency of each cutting.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cutting device for co-extrusion film production, comprising a main body plate (110), a material slot (120) for material to pass through is provided in the middle of the main body plate (110), and a movable plate group (130) is also provided on the side of the main body plate (110), characterized in that: A driving assembly (150) for controlling the movement of a movable plate group (130) is installed on the other side of the main body plate (110), a blade (400) is connected to the side of the movable plate group (130), an installation box (200) is provided on the side of the main body plate (110), and the driving assembly (150) is arranged inside the installation box (200).

2. A cutting device for co-extrusion film production according to claim 1, characterized in that: The movable plate group (130) includes a first movable plate (131) and a second movable plate (132), wherein the first movable plate (131) is arranged on the side of the main plate (110), and the first movable plate (131) is arranged above the material trough (120), and the second movable plate (132) is also arranged on the side of the main plate (110), and the second movable plate (132) is arranged below the material trough (120).

3. A cutting device for co-extrusion film production according to claim 2, characterized in that: A cavity (133) is provided inside the installation box (200), a notch (134) is provided on a side of the installation box, the notch (134) is communicated with the cavity (133), and the drive assembly (150) is installed inside the cavity (133).

4. A cutting device for co-extrusion film production according to claim 3, characterized in that: The side of the main body plate (110) is respectively plugged with a first rotating shaft (111), a second rotating shaft (112) and a third rotating shaft (113); the driving assembly (150) comprises a gear set (151) and a rack plate (155); the gear set (151) is arranged inside the cavity (133); and the rack plate (155) is slidably engaged inside the notch (134).

5. A cutting device for co-extrusion film production according to claim 4, characterized in that: The rack assembly comprises a first gear (152), a second gear (153) and a third gear (154); the first gear (152) is sleeved on the outer side of the first rotating shaft (111); the second gear (153) is sleeved on the outer side of the second rotating shaft (112); the third rotating shaft (113) is sleeved on the outer side of the third rotating shaft (113); two rack plates (155) are provided, and the two rack plates (155) are respectively meshed with the first gear (152) and the third gear (154) for transmission.

6. A cutting device for co-extrusion film production according to claim 5, characterized in that: The first movable plate (131) and the second movable plate (132) are respectively connected to the side with a connecting plate (160), and the other end of the connecting plate (160) is connected to the side of the rack plate (155). The side of the installation box (200) is connected to a servo motor (161), and the output shaft of the servo motor (161) is inserted into the side of the installation box (200), and the output shaft of the servo motor (161) is connected to the end of the first rotating shaft (111).

7. A cutting device for co-extrusion film production according to claim 6, characterized in that: The side of the connecting plate (160) is connected to a fixing block (162), the side of the main plate (110) is provided with a sliding groove (163), the side of the fixing block (162) is connected to a piston block (164), the sliding groove (163) is configured as a piston groove, and the piston block (164) is slidably engaged with the sliding groove (163).

8. A cutting device for co-extrusion film production according to claim 7, characterized in that: A damping tube (170) for slowing down the movement of the first movable plate (131) and the second movable plate (132) is installed inside the slide groove (163), and a plurality of spacers (300) are installed inside the damping tube (170). Air holes (172) are opened on the surface of the spacers (300). A pulley (173) is installed on the side of the fixed block (162), and the pulley (173) is slidably matched with the damping tube (170).

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