Film blowing device with film thickness adjusting function

Abstract

The utility model relates to the technical field of film blowing machines, and discloses a film blowing device with a film thickness adjusting function, the film blowing device comprises a film discharging mechanism and an adjusting mechanism, and the adjusting mechanism is arranged on the output side of the film discharging mechanism; the adjusting mechanism comprises a detection assembly which is in butt joint with the output side of the film discharging mechanism and used for detecting the thickness of a film output by the film discharging mechanism. And the film adjusting assembly is arranged on one side of the output end of the detection assembly and is used for receiving the detection information of the detection assembly on the film thickness and correspondingly heating or cooling the film. Through the combined design of the detection assembly and the film adjusting assembly, the film thickness can be detected after film discharging, and the film adjusting assembly optimizes the film in real time according to the film thickness detection result, so that the deviation of the film thickness is greatly reduced, a large number of unqualified products are prevented from flowing into subsequent procedures, the product quality is effectively improved, and the consistency of the film thickness is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of film blowing machines, and particularly relates to a film blowing device with a film thickness adjusting function. BACKGROUND

[0002] A film blowing machine is a plastic processing equipment, and its working is based on the extrusion and blow molding principle of plastic, and is mainly used for producing various plastic films.

[0003] In the production process of a traditional film blowing machine, after film extrusion and molding, the film is usually directly wound into a finished film roll through a traction device, but due to the influence of temperature, wind speed, screw speed and other parameters on the film bubble in the extrusion and traction process, the film thickness may be uneven in the circumferential direction or longitudinal direction.

[0004] In view of this phenomenon, the industry generally adopts an offline sampling detection method, that is, periodic sampling inspection is performed on the finished film through manual measurement or laboratory instruments. However, this offline detection cannot timely find the deviation of the film thickness, so it cannot be optimized in real time according to the actual production situation, and a large number of unqualified products are easily flowed into the subsequent process, which is difficult to ensure the consistency of product quality. CONTENT OF THE INVENTION

[0005] In order to solve the problems of the prior art, the application provides a film blowing device with a film thickness adjusting function, which is designed by combining a detection assembly and a film adjusting assembly. The film thickness can be detected after the film is output, the film adjusting assembly can optimize the film in real time according to the film thickness detection result, so that the deviation of the film thickness is greatly reduced, a large number of unqualified products are avoided to flow into the subsequent process, the product quality is effectively improved, and the consistency of the film thickness is improved.

[0006] The technical effects achieved by the application are achieved through the following aspects:

[0007] The application provides a film blowing device with a film thickness adjusting function, which includes a film output mechanism and an adjusting mechanism, and the adjusting mechanism is arranged on the output side of the film output mechanism.

[0008] The adjusting mechanism includes:

[0009] The detection assembly is connected to the output side of the film output mechanism, and is used for detecting the film thickness output by the film output mechanism; and

[0010] The film adjusting assembly is arranged on one side of the output end of the detection assembly, and is used for receiving the detection information of the film thickness detected by the detection assembly and heating or cooling the film accordingly.

[0011] In some implementations, the film output mechanism is provided with a film output port.

[0012] The detection assembly includes:

[0013] A first guide roller is arranged on both sides of the film outlet and used for guiding and conveying the film;

[0014] A support frame is connected with the first guide roller; and

[0015] A detection component is connected with the support frame and arranged corresponding to the first guide roller and used for detecting the thickness of each position of the film.

[0016] In some implementations, the detection component comprises a radiation emitter and a radiation receiver arranged oppositely, and the radiation emitter and the radiation receiver are arranged on both sides of the film outlet respectively.

[0017] In some implementations, the film adjusting assembly comprises:

[0018] A plurality of temperature control components are arranged around the film passing hole and have a film blowing port arranged on one side of the film passing hole, and the film blowing port is used for blowing hot air or cold air to the film to adjust the thickness of the film; and

[0019] A second guide roller is arranged on the film passing hole and arranged corresponding to the film blowing port.

[0020] In some implementations, the temperature control component comprises:

[0021] A shell is assembled by an upper shell plate and a lower shell plate, and the upper shell plate and the lower shell plate are arranged around a cavity, and the cavity is arranged in communication with the film blowing port;

[0022] A heating member is arranged along the edge of the film blowing port and connected with the upper shell plate;

[0023] A cooling member is connected with the lower shell plate corresponding to the heating member; and

[0024] An air outlet pipe is connected with one end of the shell away from the film blowing port and used for conveying air through the heating member and the cooling member to the film blowing port.

[0025] In some implementations, a plurality of detection components are arranged, and the number of the detection components is equal to the number of the heating members and the cooling members; and the detection components are connected with the heating members and the cooling members in control, so that the corresponding detection component controls the operation of a single heating member or cooling member.

[0026] In some implementations, the upper shell plate and the lower shell plate are arranged side by side with a plurality of heating members or cooling members.

[0027] In some implementations, the heating members and the cooling members are arranged alternately and side by side on the upper shell plate or the lower shell plate.

[0028] In some implementations, the cooling member comprises a cooling pipe and a cooling liquid, and the cooling liquid flows through the cooling pipe.

[0029] In some implementations, the heating member is a structure composed of several heating pipes.

[0030] In summary, the present application has at least the following advantages:

[0031] 1. The film blowing device with the film thickness adjusting function provided by the present application realizes real-time detection of the film thickness through the detection assembly, and then the film thickness is optimized and thinned through the linkage film adjusting assembly when the detection assembly senses that the film thickness is too thick. When the detection assembly senses that the film thickness is too thin or within the normal range, the film adjusting assembly blows cold air to the film, thereby ensuring the stability of the film thickness. The film thickness is detected in real time and optimized accordingly, effectively reducing the deviation of the film thickness, avoiding a large number of unqualified products from flowing into the subsequent process, and improving the product quality and the consistency of the film thickness.

[0032] 2. The film blowing device with the film thickness adjusting function provided by the present application realizes real-time detection and optimization through the detection assembly and the film adjusting assembly, reduces the production failure rate, effectively simplifies the detection operation, reduces the detection time, and thereby improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 FIG. 1 is a front view of the structure of the film blowing device in Embodiment 1 of the present application.

[0034] Figure 2 FIG. 2 is an enlarged structure schematic view of the detection assembly in Embodiment 1 of the present application. Figure 1

[0035] Figure 3 FIG. 3 is a top view of the film adjusting assembly in Embodiment 1 of the present application (except the air outlet pipe).

[0036] Figure 4 FIG. 4 is a structure schematic view of the temperature control component in the A-A view. Figure 3

[0037] Figure 5 FIG. 5 is a front view of the film adjusting assembly in Embodiment 1 of the present application.

[0038] Figure 6 FIG. 6 is a top view of the combination of the lower shell plate, the heating member, and the cooling member in Embodiment 2 of the present application.

[0039] Markings in the figure:

[0040] ​​1, film outlet mechanism, 11, film outlet; 2, adjusting mechanism, 21, detection assembly, 211, first guide roller, 212, support frame, 213, detection component, 2131, ray emitter, 2132, ray receiver, 22, film adjusting assembly, 221, temperature control component, 2211, film blowing port, 2212, shell, 2213, upper shell plate, 2214, lower shell plate, 2215, heating element, 2216, cooling element, 2217, air outlet pipe, 222, film passing hole, 223, second guide roller; 3, bubble. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, but not all the embodiments of the present application.

[0042] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0043] Example 1:

[0044] Please refer to the drawings Figure 1 The film blowing device with film thickness adjusting function of the present application comprises a film outlet mechanism 1 and an adjusting mechanism 2, and the adjusting mechanism 2 is arranged at the output side of the film outlet mechanism 1. The film outlet mechanism 1 is provided with a film outlet 11. Among them, the film outlet mechanism 1 is used to form a circular thin-walled pipe blank from plastic, and then blow compressed air into the pipe blank to make the pipe blank expand under the action of air pressure to form a bubble 3 similar to a balloon, and then transmit from the film outlet 11. Subsequently, the bubble 3 is connected to the adjusting mechanism 2 for real-time detection and optimization.

[0045] The adjusting mechanism 2 comprises a detection assembly 21 and a film adjusting assembly 22. Specifically, the detection assembly 21 is connected to the output side of the film outlet mechanism 1 for detecting the film thickness output by the film outlet mechanism 1. The film adjusting assembly 22 is arranged on one side of the output end of the detection assembly 21 for receiving the detection information of the film thickness from the detection assembly 21 and heating or cooling the film accordingly. It can be understood that the bubble 3 enters the detection assembly 21 after coming out of the film outlet mechanism 1, and the detection assembly 21 detects the thickness of the bubble 3. Then the film thickness information is obtained through the film adjusting assembly 22, and hot air or cold air is blown to a certain range of the bubble 3 to realize real-time optimization of the bubble 3.

[0046] The working process of the film blowing device in this embodiment is as follows: first, the film outlet mechanism 1 transmits the bubble 3 from the film outlet 11, and the bubble 3 passes through the detection assembly 21, so that the detection assembly 21 detects the film thickness of the bubble 3 in real time. When it is sensed that the film thickness of the bubble 3 is too thick, the film adjusting assembly 22 blows hot air towards the bubble 3 to optimize the thinning of the bubble 3; when it is sensed that the film thickness of the bubble 3 is too thin or within a normal range, the film adjusting assembly 22 blows cold air towards the bubble 3 to preliminarily solidify the bubble 3. The stability of the bubble 3 in the transmission process is effectively ensured, the deformation phenomenon is avoided, and the quality is ensured. In addition, when it is detected that the thickness of the bubble 3 is too thin or too thick for a set number of times, the control system program can be set to control the shutdown and prompt the operator to maintain the film outlet mechanism 1, thereby ensuring the quality of the subsequent bubble 3 production.

[0047] Through the above settings, the film thickness can be detected in real time and optimized accordingly, effectively reducing the deviation of the film thickness, avoiding a large number of unqualified products flowing into the subsequent process, and improving the product quality and the consistency of the film thickness. Moreover, due to the real-time detection and optimization of the detection assembly 21 and the film adjusting assembly 22, the production failure rate is reduced, the detection operation is effectively simplified, the detection time is short, and the production efficiency is improved.

[0048] Please refer to the accompanying drawings Figure 2 The detection assembly 21 includes a first guide roller 211, a support frame 212, and a detection component 213. The first guide roller 211 is arranged on both sides of the film outlet 11 and is used for guiding and transmitting the film; the support frame 212 is connected with the first guide roller 211; and the detection component 213 is connected with the support frame 212 and is arranged corresponding to the first guide roller 211 and is used for detecting the thickness of the film at different positions. It can be understood that the bubble 3 is similar to a cylindrical shape, a plurality of first guide rollers 211 are arranged along the bubble 3, and a plurality of detection components 213 are also arranged, thereby the thickness of the bubble 3 at different positions can be detected to ensure that the thickness deviation of the bubble 3 is small and the quality of the bubble 3 is ensured. The support frame 212 can ensure the stable operation of the first guide roller 211 and the detection component 213, and ensure the detection accuracy.

[0049] Specifically, the detection component 213 includes a radiation emitter 2131 and a radiation receiver 2132 arranged opposite to each other, and the radiation emitter 2131 and the radiation receiver 2132 are arranged on both sides of the film outlet 11. The radiation detection method can obtain two-dimensional or three-dimensional image information of an object, and can comprehensively and intuitively reflect the thickness condition of the bubble 3. Through analysis of the image, the position, size, shape and other information of the defect can be accurately determined, and the qualitative and quantitative accuracy is relatively high.

[0050] Through the above arrangement of the detection assembly 21, the detection assembly 21 can stably detect each position of the bubble 3 along the generation of the bubble 3, realize the comprehensiveness of the bubble 3 detection, and further ensure the detection accuracy by using the radiation detection combined with the regional detection.

[0051] In some embodiments, please refer to the accompanying drawings Figure 3 , the film adjusting assembly 22 comprises a plurality of temperature control components 221 and a second guide roller 223. The plurality of temperature control components 221 are arranged to form a film passing hole 222, and a film blowing port 2211 is arranged on one side corresponding to the film passing hole 222, which is used to blow hot or cold air to the film to adjust the thickness of the film. The second guide roller 223 is arranged at the film passing hole 222 and corresponds to the film blowing port 2211. Through the above arrangement, the film bubble 3 passes through the film passing hole 222 and moves from the first guide roller 211 to the second guide roller 223. The temperature control component 221 generates hot or cold air according to the detection data of the corresponding detection component 213, and optimizes the local position of the film bubble 3 through the film blowing port 2211. Wherein, the detection component 213 and the temperature control component 221 are vertically arranged corresponding to each other, and a plurality of detection components 213 and temperature control components 221 are independently detected, controlled and optimized in real time, which ensures the timeliness and accuracy of the film thickness optimization.

[0052] Specifically, please refer to the accompanying drawings Figures 4-5 , the temperature control component 221 comprises a shell 2212, a heating element 2215, a cooling element 2216 and an air outlet pipe 2217. The shell 2212 is assembled by an upper shell plate 2213 and a lower shell plate 2214, and the upper shell plate 2213 and the lower shell plate 2214 are arranged to form a cavity, which is arranged in communication with the film blowing port 2211. The upper shell plate 2213 and the lower shell plate 2214 can be assembled by screwing. The heating element 2215 is arranged along the edge of the film blowing port 2211 and connected with the upper shell plate 2213. Specifically, the heating element 2215 is composed of a plurality of heating pipes. The cooling element 2216 is connected with the lower shell plate 2214 corresponding to the heating element 2215. Specifically, the cooling element 2216 comprises a cooling pipe and a cooling liquid, and the cooling liquid flows through the cooling pipe. The air outlet pipe 2217 is connected with one end of the shell 2212 away from the film blowing port 2211, which is used to deliver the air through the heating element 2215 and the cooling element 2216 to the film blowing port 2211. Preferably, the air outlet pipe 2217 is a channel for introducing compressed air.

[0053] Through the above arrangement of the temperature control component 221, when the detection component 213 detects that the thickness of the film bubble 3 is too thick, the heating element 2215 is started, the air outlet pipe 2217 introduces compressed air, the compressed air becomes hot air after passing through the heating element 2215, and blows towards the film bubble 3, thereby optimizing the thickness of the film bubble 3. When the detection component 213 detects that the thickness of the film bubble 3 is not too thick, the cooling element 2216 is started, the air outlet pipe 2217 introduces compressed air, the compressed air becomes cold air after passing through the cooling element 2216, and blows towards the film bubble 3, thereby solidifying the film bubble 3, ensuring the quality of the film bubble 3, optimizing the thickness of the film bubble 3 in real time, effectively reducing the deviation of the film thickness, avoiding a large number of unqualified products flowing into the subsequent process, and improving the product quality and the consistency of the film thickness.

[0054] In some embodiments, the detection components 213 are provided in plurality, the number of detection components 213 is equal to the number of heating elements 2215 and cooling elements 2216; and the detection components 213 are in control connection with the heating elements 2215 and cooling elements 2216, so that the corresponding detection component 213 controls the operation of a single heating element 2215 or cooling element 2216. Through this arrangement, when the thickness of the bubble 3 at a certain position is detected to be thicker, the heating element 2215 is started, and then hot air is blown towards the bubble 3 to ensure that the thickness deviation of the bubble 3 is small. The heating element 2215 or cooling element 2216 can be flexibly started according to the thickness of the bubble 3 at different positions of the bubble 3, ensuring the thickness uniformity of the bubble 3 and improving the flexibility of optimizing the thickness. It can be understood that the temperature and time of heating and cooling and the moving time of the bubble 3 are all set by program control according to production needs, which can be flexibly adjusted according to existing common sense.

[0055] Embodiment 2:

[0056] The difference between this embodiment and embodiment 1 is that, as shown in Figure 6 The upper shell plate 2213 and the lower shell plate 2214 of this embodiment are both provided with a plurality of heating elements 2215 or cooling elements 2216 side by side. Through this arrangement, the area of the chamber for heating or cooling can be increased, thereby accelerating the heating or cooling efficiency of the compressed air and improving the timeliness of thickness optimization, so as to accelerate the film blowing efficiency.

[0057] In some embodiments, the heating elements 2215 and the cooling elements 2216 are alternately arranged side by side on the upper shell plate 2213 or the lower shell plate 2214. Through this arrangement, the heating elements 2215 and the cooling elements 2216 in the chamber are arranged at intervals, which can avoid the phenomenon that the temperature difference of the chamber is too large, ensure that the compressed air is quickly controlled at the required temperature, ensure that the temperature in the chamber is relatively balanced, and then make the compressed air heated or cooled evenly, thereby improving the thickness optimization quality.

[0058] Embodiment 3:

[0059] On the basis of the above-mentioned embodiments, the present embodiment provides a packaging material production equipment, which comprises the above-mentioned film blowing device with film thickness adjusting function.

[0060] The packaging material production equipment of the present embodiment can realize real-time detection operation of the bubble 3 and timely optimization and adjustment of the thickness by using the above-mentioned film blowing device with film thickness adjusting function, thereby improving the production quality of the bubble 3, ensuring the uniformity of the thickness of the bubble 3, and the equipment does not need to be separately detected by manual quality detection, reducing the labor, and correspondingly improving the production efficiency of the bubble 3.

[0061] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0062] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0064] In this application, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" a first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Although the description of this application has been made in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A blown film device with film thickness adjustment function, characterized in that, The film output mechanism (1) and the adjusting mechanism (2) are arranged on the output side of the film output mechanism (1). The adjusting mechanism (2) comprises: a detection assembly (21) arranged on the output side of the film output mechanism (1) for detecting the film thickness output by the film output mechanism (1); and a film adjusting assembly (22) arranged on one side of the output end of the detection assembly (21) for receiving the detection information of the film thickness from the detection assembly (21) and heating or cooling the film accordingly.

2. The film blowing apparatus having a film thickness adjusting function according to claim 1, wherein The film output mechanism (1) is provided with a film output port (11). The detection assembly (21) comprises: a first guide roller (211) arranged on both sides of the film output port (11) for guiding and conveying the film; a support frame (212) connected with the first guide roller (211); and a detection component (213) connected with the support frame (212) and arranged corresponding to the first guide roller (211) for detecting the thickness of the film at different positions.

3. The film blowing apparatus having a film thickness adjusting function according to claim 2, wherein The detection component (213) comprises a radiation emitter (2131) and a radiation receiver (2132) arranged oppositely, and the radiation emitter (2131) and the radiation receiver (2132) are arranged on both sides of the film output port (11).

4. The film blowing apparatus having a film thickness adjusting function according to claim 2, wherein The film adjusting assembly (22) comprises: a plurality of temperature control components (221) surrounding a film passing hole (222) and provided with a film blowing port (2211) on one side of the film passing hole (222), the film blowing port (2211) being used for blowing hot or cold air to the film to adjust the thickness of the film; and a second guide roller (223) arranged on the film passing hole (222) and corresponding to the film blowing port (2211).

5. The film blowing apparatus having a film thickness adjusting function according to claim 4, wherein The temperature control component (221) comprises: a shell (2212) assembled by an upper shell plate (2213) and a lower shell plate (2214), the upper shell plate (2213) and the lower shell plate (2214) surrounding a cavity, and the cavity being arranged in communication with the film blowing port (2211); a heating element (2215) arranged along the edge of the film blowing port (2211) and connected with the upper shell plate (2213); a cooling element (2216) connected with the lower shell plate (2214) corresponding to the heating element (2215); and an air outlet pipe (2217) connected with one end of the shell (2212) away from the film blowing port (2211) for conveying air through the heating element (2215) and the cooling element (2216) to the film blowing port (2211).

6. The film blowing apparatus having a film thickness adjusting function according to claim 5, wherein The detection component (213) is provided with a plurality of detection components (213), the number of the detection components (213) being equal to the number of the heating elements (2215) and the cooling elements (2216), and the detection components (213) are connected with the heating elements (2215) and the cooling elements (2216) for controlling the operation of a single heating element (2215) or cooling element (2216) corresponding to the detection component (213).

7. The film blowing apparatus having a film thickness adjusting function according to claim 5, wherein The upper shell plate (2213) and the lower shell plate (2214) are provided with a plurality of heating elements (2215) or cooling elements (2216) side by side.

8. The film blowing apparatus having a film thickness adjusting function according to claim 7, wherein The heating elements (2215) and the cooling elements (2216) are alternately arranged side by side on the upper shell plate (2213) or the lower shell plate (2214).

9. The film blowing apparatus having a film thickness adjusting function according to claim 5, wherein The cooling element (2216) comprises a cooling pipe and a cooling liquid, and the cooling liquid flows through the cooling pipe.

10. The film blowing apparatus having a film thickness adjusting function according to claim 5, wherein The heating element (2215) is composed of a plurality of heating pipes.

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