PVC (polyvinyl chloride) film plastic uptake process

Abstract

The invention discloses a PVC (polyvinyl chloride) film plastic uptake process. The PVC film plastic uptake process comprises the following steps: S1, preparing materials; s2, preheating treatment; s3, carrying out plastic molding; s4, demolding is conducted; s5, carrying out post-treatment; wherein in the step S4, the vacuum pump is turned off, the blister product is conveyed to the discharging end of the blister device through the blister device, then the blister product is discharged to an external storage area through the discharging device, and then appearance and performance testing is conducted on the blister product. In the step S4, after the vacuum pump is turned off, the blister products are conveyed to the second conveying belt through the first conveying belt for subsequent conveying, then the second conveying belt conveys the blister products to the bottom side of the material taking end of the material taking assembly, the material taking assembly grabs the blister products, and then the blister products are conveyed to the bottom side of the material taking end of the material taking assembly. And the blister products output to the surface of the second conveying belt by the first conveying belt are sequentially stacked, so that stacking and batch discharging of the blister products are achieved, the space utilization rate of the blister products is improved, and meanwhile the discharging efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of blister forming technology, in particular to a PVC film blister forming technology. Background Art

[0002] PVC film blister process is a plastic processing technology that softens polyvinyl chloride (PVC) film by heating and forming it using vacuum technology. This process is usually used to manufacture thin-walled plastic products of various shapes, and is widely used in packaging, display, household appliance housings and decoration. The core principle of PVC film blister process is to soften the PVC film material by heating, and then use vacuum suction to adsorb the softened film material on the surface of a pre-prepared mold to form it. After molding, it is cooled and fixed into the shape of the final product. The PVC film blister process generally includes material selection, using PVC film of specific thickness and properties; heating and softening; blister molding; cooling and shaping; demolding and post-processing. The advantages of PVC film blister process include low cost, efficient production and strong flexibility. PVC materials are cheap, the processing technology is relatively simple, and the blister process can be mass-produced. Products of different shapes can also be produced according to the design of the mold. The process is easy to control, so it is very suitable for the application direction of thin-walled plastic packaging.

[0003] A Chinese patent with application number CN202010038932.0 discloses a PVC film blister process, in which a feeding mechanism disclosed in the patent is installed on a first shell, and a pushing mechanism is installed on the first shell. The feeding mechanism and the pushing mechanism facilitate the movement of the PVC plastic hard sheet, which is conducive to continuously placing the PVC plastic hard sheet under the heating mechanism; a cleaning mechanism is installed on the first shell, and when the PVC plastic hard sheet passes through the cleaning mechanism, the cleaning mechanism cleans the bottom end of the PVC plastic hard sheet and fixes the debris on the PVC plastic hard sheet, thereby facilitating the collection and cleaning of the debris; a limiting mechanism is fixed to the first shell, and the fixing of the PVC plastic hard sheet by the limiting mechanism is conducive to the positioning of the PVC plastic hard sheet. However, the above-mentioned PVC film blister process does not further improve the unloading device of the blister equipment, resulting in insufficient unloading efficiency and affecting the improvement of the overall production efficiency. Summary of the invention

[0004] Based on this, it is necessary to provide a PVC film blister process to address the technical problem of insufficient production efficiency of the existing PVC film blister process.

[0005] A PVC film blister process, the PVC film blister process comprising the following steps: S1, material preparation; S2, preheating treatment; S3, blister molding; S4, demoulding; S5, post-processing. Among them, step S1 includes selecting a PVC film with preset size parameters, setting the thickness to 0.2-1.0mm, and installing the PVC film coil to the feeding end of the blister device; selecting a blister mold, and installing the mold to the preset station of the blister device. Step 2 includes preheating the PVC film to the processing temperature, and the processing temperature is set to 120-160℃. Step S3 includes conveying the PVC film heated to the preset working temperature to the blister mold, starting the blister device, and the vacuum pump extracts the air in the mold, so that the atmospheric pressure is used to make the PVC film close to the mold surface to form the mold shape; maintaining the vacuum state, and cooling the PVC film at the same time until it is cooled to the preset temperature to obtain a solidified blister product. Step S4 includes turning off the vacuum pump, the blister device conveys the blister product to the unloading end of the blister device, and then, the blister product is unloaded to the external storage area through a unloading device, and then the blister product is tested for appearance and performance. Step S5 includes trimming the edges of the blister product to ensure that the product meets factory requirements.

[0006] In one embodiment, the blister device in the above-mentioned step S1 includes a frame, a reel, a blister mechanism and a first conveyor belt, and the reel, the blister mechanism and the first conveyor belt are all installed on the frame, wherein the reel is arranged at one end of the frame; the first conveyor belt is arranged at the top of the frame and extends from one end of the frame to the other end; the blister mechanism is arranged at the top of the first conveyor belt near one end of the reel.

[0007] In one embodiment, in step S1, the PVC film coil is installed on the unwinding roller, the blister mold is set in the blister module, and after the PVC film is processed and formed by the blister module, the blister product is conveyed by the first conveyor belt.

[0008] In one embodiment, the unloading device in the above-mentioned step S4 includes a base, a second conveyor belt and a material picking assembly, the base is arranged on one side of the frame, the second conveyor belt and the material picking assembly are both installed on the base, one end of the second conveyor belt corresponds to the output end of the first conveyor belt, the other end of the second conveyor belt extends along the length direction of the base to the other end of the base, and the material picking assembly is arranged on one side of the second conveyor belt.

[0009] In one of the embodiments, in the above-mentioned step S4, after the vacuum pump is turned off, the blister product is conveyed to the second conveyor belt through the first conveyor belt for subsequent conveying, and then the second conveyor belt conveys the blister product to the bottom side of the material picking end of the material picking component, and the material picking component grabs the blister product and stacks the blister products output from the first conveyor belt to the surface of the second conveyor belt in sequence.

[0010] In one embodiment, the above-mentioned material picking assembly includes a driving unit and a material picking unit. The driving unit is arranged on one side of the second conveyor belt and connected to the base. The material picking unit is arranged at the output end of the driving unit corresponding to the second conveyor belt, so that the driving unit can drive the material picking unit to pick up the blister products on the surface of the second conveyor belt.

[0011] In one embodiment, the above-mentioned material picking unit includes a connecting arm, a mounting frame and a plurality of vacuum suction cups, one end of the connecting arm is connected to the output end of the driving unit, and the other end of the connecting arm is connected to the mounting frame; the plurality of vacuum suction cups are installed on the mounting frame, and the suction end of each vacuum suction cup is arranged toward the surface of the second conveyor belt.

[0012] In one of the embodiments, in the above-mentioned step S4, when a number of blister products are conveyed from the output end of the first conveyor belt to the preset position of the second conveyor belt, the driving unit drives a number of vacuum suction cups to move to the preset position through the connecting arm and the mounting frame, and sucks the number of blister products accordingly.

[0013] In one embodiment, the above-mentioned driving unit includes a first linear slide and a second linear slide, the first linear slide is vertically arranged relative to the conveying plane of the second conveyor belt and connected to the base; the second linear slide is arranged parallel to the conveying plane of the second conveyor belt and connected to the output end of the first linear slide; thus, the first linear slide can drive the second linear slide to perform lifting and lowering movements relative to the second conveyor belt, so as to adjust the relative height between the second linear slide and the second conveyor belt.

[0014] In one embodiment, the connecting arm is connected to the output end of the second linear slide, so that the second linear slide can drive the connecting arm to move horizontally relative to the second conveyor belt, thereby adjusting the horizontal relative position between the plurality of vacuum suction cups and the second conveyor belt.

[0015] In one embodiment, the mounting frame and the connecting arm are connected via a hinge structure, so that the mounting frame can swing in a preset direction relative to the connecting arm with the hinge structure as an axis.

[0016] In one embodiment, the connecting arm is provided by a driving cylinder, and the output end of the driving cylinder is hinged to the mounting frame, so that the driving cylinder can drive the mounting frame to swing the connecting arm first.

[0017] In one of the embodiments, the hinge structure between the mounting frame and the connecting arm is arranged perpendicular to the conveying direction of the second conveyor belt, so that the mounting frame can adjust the pitch angle relative to the conveying plane of the second conveyor belt.

[0018] The above-mentioned PVC film blister process improves the unloading efficiency of blister products by setting a unloading device at the discharge end of the blister device. Specifically, the unloading device in step S4 includes a base, a second conveyor belt and a material picking component. The base is arranged on one side of the frame, and the second conveyor belt and the material picking component are both installed on the base. One end of the second conveyor belt corresponds to the output end of the first conveyor belt, and the other end of the second conveyor belt extends to the other end of the base along the length direction of the base. The material picking component is arranged on one side of the second conveyor belt. In the above-mentioned step S4, after the vacuum pump is turned off, the blister product is conveyed to the second conveyor belt through the first conveyor belt for subsequent conveying. Then, the second conveyor belt conveys the blister product to the bottom side of the material picking end of the material picking component. The material picking component grabs the blister product and stacks the blister products output from the first conveyor belt to the surface of the second conveyor belt in sequence, so as to realize the stacking and batch unloading of the blister products, thereby improving the space utilization of the blister products and improving the unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a PVC film blister process in one embodiment; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the M portion in the illustrated embodiment. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] The present invention discloses a PVC film blister process, which comprises the following steps: S1, material preparation; S2, preheating treatment; S3, blister molding; S4, demoulding; S5, post-processing. Among them, step S1 includes selecting a PVC film with preset size parameters, setting the thickness to 0.2-1.0mm, and installing the PVC film coil to the feeding end of the blister device 10; selecting a blister mold, and installing the mold to the preset station of the blister device 10. Step 2 includes preheating the PVC film to the processing temperature, and the processing temperature is set to 120-160°C. Step S3 includes conveying the PVC film heated to the preset working temperature to the blister mold, starting the blister device 10, and the vacuum pump extracts the air in the mold, thereby using atmospheric pressure to make the PVC film close to the mold surface to form the mold shape; maintaining the vacuum state, while cooling the PVC film until it is cooled to the preset temperature, to obtain a solidified blister product. Step S4 includes turning off the vacuum pump, and the blister device 10 conveys the blister product to the unloading end of the blister device 10, and then unloading the blister product to the external storage area through the unloading device 20, and then performing appearance and performance tests on the blister product. Step S5 includes trimming the edges of the blister product to make the product meet the factory requirements.

[0027] See also Figure 1 to Figure 2 Further, the blister device 10 in the above step S1 includes a frame 100, an unwinding roller 110, a blister mechanism 120 and a first conveyor belt 130, wherein the unwinding roller 110, the blister mechanism 120 and the first conveyor belt 130 are all installed on the frame 100, wherein the unwinding roller 110 is arranged at one end of the frame 100; the first conveyor belt 130 is arranged at the top of the frame 100 and extends from one end of the frame 100 to the other end; the blister mechanism 120 is arranged at the top of the first conveyor belt 130 near one end of the unwinding roller 110. Thus, in step S1, the PVC film coil is installed on the unwinding roller 110, the blister mold is arranged on the blister module, and after the PVC film is processed and formed by the blister module, the blister product is conveyed by the first conveyor belt 130.

[0028] Furthermore, the unloading device 20 in step S4 includes a base 200, a second conveyor belt 210 and a material picking assembly 220, the base 200 is arranged on one side of the frame 100, the second conveyor belt 210 and the material picking assembly 220 are both installed on the base 200, wherein one end of the second conveyor belt 210 corresponds to the output end of the first conveyor belt 130, and the other end of the second conveyor belt 210 extends along the length direction of the base 200 to the other end of the base 200, and the material picking assembly 220 is arranged on one side of the second conveyor belt 210, so that the material picking end of the material picking assembly 220 can correspond to the blister product conveyed on the surface of the second conveyor belt 210. Specifically, in the above-mentioned step S4, after the vacuum pump is turned off, the blister product is conveyed to the second conveyor belt 210 through the first conveyor belt 130 for subsequent conveying, and then the second conveyor belt 210 conveys the blister product to the bottom side of the material picking end of the material picking component 220. The material picking component 220 grabs the blister product and stacks the blister products output from the first conveyor belt 130 to the surface of the second conveyor belt 210 in sequence, so as to realize the stacking and batch unloading of the blister products, thereby improving the space utilization of the blister products and improving the unloading efficiency.

[0029] Furthermore, the material picking component 220 includes a driving unit and a material picking unit. The driving unit is arranged on one side of the second conveyor belt 210 and is connected to the base 200. The material picking unit is arranged at the output end of the driving unit corresponding to the second conveyor belt 210, so that the driving unit can drive the material picking unit to pick up the blister products on the surface of the second conveyor belt 210. Specifically, the material picking unit includes a connecting arm 221, a mounting frame 222 and a plurality of vacuum suction cups 223, one end of the connecting arm 221 is connected to the output end of the driving unit, and the other end of the connecting arm 221 is connected to the mounting frame 222; a plurality of vacuum suction cups 223 are installed on the mounting frame 222, and the suction end of each vacuum suction cup 223 is arranged toward the surface of the second conveyor belt 210, so that, in the above-mentioned step S4, when a plurality of blister products are conveyed from the output end of the first conveyor belt 130 to the preset station of the second conveyor belt 210, the driving unit drives the plurality of vacuum suction cups 223 to move to the preset station through the connecting arm 221 and the mounting frame 222, and correspondingly sucks a plurality of blister products, and then realizes batch suction of blister products by the material picking component 220, thereby greatly improving the material unloading efficiency.

[0030] Furthermore, the driving unit includes a first linear slide 224 and a second linear slide 225. The first linear slide 224 is vertically arranged relative to the conveying plane of the second conveyor belt 210 and connected to the base 200; the second linear slide 225 is arranged parallel to the conveying plane of the second conveyor belt 210 and connected to the output end of the first linear slide 224; thus, the first linear slide 224 can drive the second linear slide 225 to move up and down relative to the second conveyor belt 210, so as to adjust the relative height between the second linear slide 225 and the second conveyor belt 210. Specifically, the connecting arm 221 is connected to the output end of the second linear slide 225, so that the second linear slide 225 can drive the connecting arm 221 to move horizontally relative to the second conveyor belt 210, so as to adjust the horizontal relative position between the plurality of vacuum suction cups 223 and the second conveyor belt 210.

[0031] Furthermore, the mounting frame 222 and the connecting arm 221 are connected by a hinge structure, so that the mounting frame 222 can swing in a preset direction relative to the connecting arm 221 with the hinge structure as the axis. Specifically, the connecting arm 221 is provided with a driving cylinder 226, and the output end of the driving cylinder 226 is hinged to the mounting frame 222, so that the driving cylinder 226 can drive the mounting frame 222 to swing the connecting arm 221 first, and can cause the mounting frame 222 to maintain a preset angle relative to the connecting arm 221, thereby further expanding the material picking angle of the plurality of vacuum suction cups 223.

[0032] Furthermore, the hinge structure between the mounting frame 222 and the connecting arm 221 is arranged perpendicular to the conveying direction of the second conveyor belt 210, so that the mounting frame 222 can adjust the pitch angle relative to the conveying plane of the second conveyor belt 210, thereby effectively expanding the applicable working conditions of several vacuum suction cups 223.

[0033] In summary, the PVC film blister process disclosed by the present invention improves the unloading efficiency of blister products by setting a unloading device at the discharge end of the blister device. Specifically, the unloading device in step S4 includes a base, a second conveyor belt and a material picking assembly, the base is arranged on one side of the frame, the second conveyor belt and the material picking assembly are both installed on the base, one end of the second conveyor belt corresponds to the output end of the first conveyor belt, the other end of the second conveyor belt extends to the other end of the base along the length direction of the base, and the material picking assembly is arranged on one side of the second conveyor belt. In the above-mentioned step S4, after the vacuum pump is turned off, the blister product is conveyed to the second conveyor belt through the first conveyor belt for subsequent conveying, and then, the second conveyor belt conveys the blister product to the bottom side of the material picking end of the material picking assembly, the material picking assembly grabs the blister product, and stacks the blister products output from the first conveyor belt to the surface of the second conveyor belt in sequence, so as to realize the stacking and batch unloading of blister products, thereby improving the space utilization of blister products and improving the unloading efficiency.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A PVC film blister process, characterized in that: The method comprises the following steps: S1, material preparation; S2, preheating treatment; S3, vacuum forming; S4, demoulding; S5, post-processing; Step S1 includes selecting a PVC film with preset size parameters, setting the thickness to 0.2-1.0 mm, and installing the PVC film coil to the feeding end of the blister device; selecting a blister mold, and installing the mold to a preset position of the blister device. Step 2 includes preheating the PVC film to a processing temperature, and the processing temperature is set to 120-160°C; Step S3 includes conveying the PVC film heated to a preset working temperature to the blister mold, starting the blister device, and using a vacuum pump to extract the air in the mold, thereby using atmospheric pressure to make the PVC film close to the mold surface to form a mold shape; maintaining a vacuum state and cooling the PVC film until it is cooled to a preset temperature to obtain a solidified blister product; Step S4 includes turning off the vacuum pump, and the blister device conveys the blister product to the unloading end of the blister device, and then unloading the blister product to the external storage area through the unloading device, and then performing appearance and performance tests on the blister product; Step S5 includes trimming the edges of the blister product to ensure that the product meets factory requirements.

2. The PVC film blister process according to claim 1, characterized in that: The blister device in step S1 includes a frame, a reel, a blister mechanism and a first conveyor belt, wherein the reel, the blister mechanism and the first conveyor belt are all installed on the frame, wherein the reel is arranged at one end of the frame; the first conveyor belt is arranged at the top of the frame and extends from one end of the frame to the other end; the blister mechanism is arranged at the top of the first conveyor belt near one end of the reel.

3. The PVC film blistering process according to claim 2, characterized in that: In the step S1, the PVC film coil is installed on the unwinding roller, the blister mold is set in the blister module, and after the PVC film is processed and formed by the blister module, the blister product is conveyed by the first conveyor belt.

4. The PVC film blistering process according to claim 3, characterized in that: The unloading device in step S4 includes a base, a second conveyor belt and a material picking assembly, the base is arranged on one side of the frame, the second conveyor belt and the material picking assembly are both installed on the base, one end of the second conveyor belt corresponds to the output end of the first conveyor belt, the other end of the second conveyor belt extends along the length direction of the base to the other end of the base, and the material picking assembly is arranged on one side of the second conveyor belt.

5. The PVC film blistering process according to claim 4, characterized in that: In step S4, after the vacuum pump is turned off, the blister product is conveyed to the second conveyor belt through the first conveyor belt for subsequent conveying. Then, the second conveyor belt conveys the blister product to the bottom side of the material picking end of the material picking component. The material picking component grabs the blister product and stacks the blister products output from the first conveyor belt to the surface of the second conveyor belt in sequence.

6. The PVC film blistering process according to claim 5, characterized in that: The material picking assembly includes a driving unit and a material picking unit. The driving unit is arranged on one side of the second conveyor belt and connected to the base. The material picking unit is arranged at the output end of the driving unit corresponding to the second conveyor belt, so that the driving unit can drive the material picking unit to pick up the blister products on the surface of the second conveyor belt.

7. The PVC film blistering process according to claim 6, characterized in that: The material picking unit includes a connecting arm, a mounting frame and a plurality of vacuum suction cups, one end of the connecting arm is connected to the output end of the driving unit, and the other end of the connecting arm is connected to the mounting frame; the plurality of vacuum suction cups are installed on the mounting frame, and the suction end of each vacuum suction cup is arranged toward the surface of the second conveyor belt.

8. The PVC film blistering process according to claim 7, characterized in that: In step S4, when a plurality of blister products are conveyed from the output end of the first conveyor belt to the preset station of the second conveyor belt, the driving unit drives a plurality of vacuum suction cups to move to the preset station through the connecting arm and the mounting frame, and sucks the plurality of blister products accordingly.

9. The PVC film blistering process according to claim 8, characterized in that: The driving unit includes a first linear slide and a second linear slide. The first linear slide is vertically arranged relative to the conveying plane of the second conveyor belt and connected to the base; the second linear slide is parallelly arranged along the conveying plane of the second conveyor belt and connected to the output end of the first linear slide.

10. The PVC film blistering process according to claim 9, characterized in that: The connecting arm is connected to the output end of the second linear slide, so that the second linear slide can drive the connecting arm to move horizontally relative to the second conveyor belt, thereby adjusting the horizontal relative position between the plurality of vacuum suction cups and the second conveyor belt.

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