Automatic steam shrinker

By using photoelectric sensors to control the automatic steam shrinking machine, the entire process of shrinking the door body is fully automated and the steam is precisely delivered, solving the problems of waste and safety hazards associated with traditional steam shrinking machines, and improving production efficiency and safety.

CN224297615UActive Publication Date: 2026-05-29SICHUAN HORSE DOORS & WINDOWS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN HORSE DOORS & WINDOWS CO LTD
Filing Date
2025-07-28
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional steam shrink film machines rely on manual operation, which leads to steam waste, safety hazards, and low production efficiency, making it difficult to achieve full automation and precise control.

Method used

The system employs an automatic steam shrinking machine, utilizing photoelectric sensors to achieve fully automated control of the door, precise steam injection, and is equipped with a thickness detector for automatic counting.

Benefits of technology

The process of shrinking the plastic protective film on the door body is fully automated, reducing steam waste, improving production efficiency, increasing safety, and facilitating management and statistics.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224297615U_ABST
    Figure CN224297615U_ABST
Patent Text Reader

Abstract

The utility model discloses an automatic steam film shrinking machine belongs to film shrinking equipment technical field, this automatic steam film shrinking machine, including: machine table body, both sides inner wall fixed mounting of machine table body have transmission belt mechanism, the top fixed connection of machine table body has two convex type side baffle, one side inner wall fixed mounting of one of convex type side baffle has feeding position inductor, and feeding position inductor is located transmission belt mechanism one end upside department, one side inner wall fixed mounting of one of convex type side baffle has steam position inductor, this automatic steam film shrinking machine has realized the full -range automation of the door body film shrinking process of having the plastic protective film, and accurate control steam delivery, avoid steam waste, will also to the door body after film shrinking processing automatic counting, convenient production management and inventory statistics, reduce manual intervention, reduce the opportunity of personnel contact hot steam, greatly improve the production efficiency of film shrinking processing, increase production safety.
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Description

Technical Field

[0001] This utility model relates to the field of shrink film equipment technology, and more specifically, to an automatic steam shrink film machine. Background Technology

[0002] After the door body is manufactured, in order to protect the door body surface from scratches, dust or moisture during transportation or storage, a steam shrink film machine is used to shrink the packaging film on the door body. The steam shrink film machine is a device that uses high-temperature steam to heat shrink the packaging film. By precisely controlling the steam temperature and spray pressure, the heat shrink film covering the door body surface shrinks evenly, closely fits the product outline, and forms a smooth and transparent protective layer.

[0003] In the process of shrink-wrapping plastic protective film on doors, traditional steam shrink-wrapping machines are usually operated manually or semi-automatically. Workers need to manually place the door covered with plastic protective film on the conveyor belt and control the start and stop of the steam equipment to complete the shrink-wrapping. Because it relies on manual judgment of the door's position and the timing of steam release, it is easy for the steam to be released too early or too late, which not only affects the shrink-wrapping effect but may also cause steam waste and increase production costs. Workers need to be in close contact with high-temperature steam equipment, which poses safety hazards such as burns. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an automatic steam shrink film machine. It realizes the full automation of the shrink film process of doors covered with plastic protective film, and precisely controls the steam supply to avoid steam waste. It also automatically counts the doors after shrink film processing, which facilitates production management and inventory statistics, reduces manual intervention, reduces the opportunity for personnel to come into contact with hot steam, greatly improves the production efficiency of shrink film processing, and increases production safety.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] An automatic steam shrink film machine includes: a machine body, on which a transmission belt mechanism is fixedly installed on both inner walls; two convex side baffles are fixedly connected to the top of the machine body; a feed position sensor is fixedly installed on one inner wall of one of the convex side baffles, the feed position sensor being located on the upper side of one end of the transmission belt mechanism; a steam position sensor is fixedly installed on one inner wall of one of the convex side baffles, the steam position sensor being located in front of the steam injection station of the machine body; and a thickness counting sensor and a thinning counting sensor are fixedly connected on one inner wall of one of the convex side baffles, both the thickness counting sensor and the thinning counting sensor being located on the upper side of the other end of the transmission belt mechanism, the thickness counting sensor being located above the thinning counting sensor.

[0009] As a preferred embodiment of this utility model, a baffle is fixedly connected between the top of the machine body and the corresponding convex side baffle, and a square hole is provided on the baffle.

[0010] As a preferred embodiment of this utility model, a vapor diffusion grid is fixedly installed on the top of the two convex side baffles.

[0011] As a preferred embodiment of this utility model, the vapor diffusion grid is made of stainless steel.

[0012] As a preferred embodiment of this utility model, two support frames are fixedly connected to the top of the machine body, and a rotating shaft is rotatably connected between the two support frames. A pressure plate is fixedly connected to the bottom of the rotating shaft.

[0013] In a preferred embodiment of this utility model, the rotating shaft and the pressure plate are made of stainless steel.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, this utility model provides an automatic steam shrink film machine, which has the following beneficial effects:

[0016] This automatic steam shrinking machine uses a feed position sensor to detect when a door covered with a plastic protective film enters the feed side of the drive belt mechanism. The drive motor of the drive belt mechanism is then activated, moving the door covered with the plastic protective film towards the steam injection station. When the front end of the door covered with the plastic protective film is detected by the steam position sensor, the solenoid valve of the steam equipment opens, releasing hot steam to shrink the plastic protective film on the door. When the rear end of the door passes the steam position sensor, the power to the solenoid valve of the steam equipment is disconnected, stopping the steam injection. When the door passes the positions of the thick door counting sensor and the thin door counting sensor, the thinner door will... When a thin door is detected by a thin door counting sensor, a thicker door will be detected by a thick door counting sensor. Either the thin door counting sensor or the thick door counting sensor will output a signal to the PLC counter, which will increment by one and continue to accumulate. This device, through the detection and cooperation of multiple photoelectric sensors, realizes the full automation of the shrink-film process of doors covered with plastic protective film, and precisely controls the steam supply to avoid steam waste. It also automatically counts the doors after shrink-film processing, which facilitates production management and inventory statistics, reduces manual intervention, reduces the chance of personnel coming into contact with hot steam, and greatly improves the production efficiency of shrink-film processing and increases production safety. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view at point B in the middle;

[0021] Figure 5 For the present utility model Figure 2 Enlarged view at point C

[0022] Figure 6 This is a cross-sectional view of the present invention.

[0023] Figure 7 This is a partial three-dimensional view of the structure of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Machine body; 2. Transmission belt mechanism; 3. Steam diffusion grid; 4. Baffle; 5. Feed level sensor; 6. Steam level sensor; 7. Thick gate counting sensor; 8. Thin gate counting sensor; 9. Rotary shaft; 10. Support frame; 11. Pressure plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example

[0027] Please see Figures 1-7 An automatic steam shrinking machine includes: a machine body 1, a transmission belt mechanism 2 fixedly installed on the inner walls of both sides of the machine body 1, two convex side baffles fixedly connected to the top of the machine body 1, a feed position sensor 5 fixedly installed on one inner wall of one side of one convex side baffle, the feed position sensor 5 being located on the upper side of one end of the transmission belt mechanism 2, a steam position sensor 6 fixedly installed on one inner wall of one side of one convex side baffle, the steam position sensor 6 being located in front of the steam injection station of the machine body 1, and a thickness counting sensor 7 and a thin door counting sensor 8 fixedly connected to one inner wall of one side of one convex side baffle, both the thickness counting sensor 7 and the thin door counting sensor 8 being located on the upper side of the other end of the transmission belt mechanism 2, with the thickness counting sensor 7 located above the thin door counting sensor 8.

[0028] In a specific embodiment of this utility model, the transmission belt mechanism 2 is a common motor-driven conveyor belt device on the market. The protrusions of the two convex side baffles are steam injection positions, where hot steam is injected by existing hot steam generating equipment. The feed position sensor 5, steam position sensor 6, thick door counting sensor 7, and thin door counting sensor 8 are common photoelectric sensors on the market. The feed position sensor 5 detects the door covered with a plastic protective film entering the feed side of the transmission belt mechanism 2 and transmits a signal to the controller. The controller outputs a signal to the relay, and the normally open contact of the relay closes, starting the drive motor of the transmission belt mechanism 2. This drives the door covered with the plastic protective film towards the steam injection position. When the front end of the door covered with the plastic protective film is detected by the steam position sensor 6, a signal is transmitted to the controller. The controller connects the solenoid valve of the steam equipment through the relay, causing the valve to open and releasing hot steam to shrink the plastic protective film on the door. When the tail end of the door passes the steam position sensor 6, the steam position sensor 6 outputs a signal to the controller. The relay disconnects the energizer to the solenoid valve of the steam equipment, stopping the steam supply. When the door passes the positions of the thick door counting sensor 7 and the thin door counting sensor 8, the thinner door will be detected by the thin door counting sensor 8, and the thicker door will be detected by the thick door counting sensor 7. The thick door counting sensor 7 or the thin door counting sensor 8 will output a signal to the PLC counter, which will increment by one and continue to accumulate. The controller, relay, and PLC counter are all common and mature technologies available on the market, and the basic electrical control circuit is also a common basic electrical solution. Its structural principle will not be elaborated here. The model and specifications should be selected according to the actual situation. This device, through the detection and cooperation of multiple photoelectric sensors, realizes the full automation of the shrinking process of the door covered with plastic protective film, and accurately controls the steam supply to avoid steam waste. It also automatically counts the doors after shrinking, which facilitates production management and inventory statistics, reduces manual intervention, reduces the opportunity for personnel to come into contact with hot steam, and greatly improves the production efficiency of shrinking processing and increases production safety.

[0029] Specifically, a baffle 4 is fixedly connected between the top of the machine body 1 and the corresponding convex side baffle, and a square hole is provided on the baffle 4.

[0030] In this embodiment, the baffle 4 is used as a precaution to prevent the door from tilting too much during feeding, which could damage the parts installed on the convex side baffle. In another embodiment of this utility model, the steam position sensor 6 is only used to open the steam after sensing the door, and a sensor to close the steam is provided on the machine body 1 corresponding to the steam diffusion grid 3.

[0031] Specifically, a vapor diffusion grid 3 is fixedly installed on the top of the two convex side baffles.

[0032] In this embodiment, the vapor diffusion grid 3 can disperse concentrated vapor into a uniform airflow, avoiding localized over-humidification.

[0033] Specifically, the vapor diffusion grid 3 is made of stainless steel.

[0034] In this embodiment, the steam diffusion grid 3 is in long-term contact with hot steam and is made of stainless steel, which is not easy to rust and has a long service life.

[0035] Specifically, the top of the machine body 1 is fixedly connected to two support frames 10, and a rotating shaft 9 is rotatably connected between the two support frames 10. A pressure plate 11 is fixedly connected to the bottom of the rotating shaft 9.

[0036] In this embodiment, the pressure plate 11 is located on the upper side of the transmission belt mechanism 2. When the door covered with a plastic protective film passes under the vapor diffusion grid 3, the pressure plate 11 will be lifted up, so that when the door passes through the pressure plate 11, the pressure plate 11 will press and straighten the plastic protective film on the door, thereby improving the film shrinkage effect.

[0037] Specifically, the pivot rod 9 and the pressure plate 11 are made of stainless steel.

[0038] In this embodiment, the rotating shaft 9 and the pressure plate 11 are in long-term contact with hot steam and are made of stainless steel, which is not easy to rust and has a long service life.

[0039] Working Principle: The feed position sensor 5 detects the door covered with a plastic protective film entering the feed side of the transmission belt mechanism 2. The feed position sensor 5 transmits a signal to the controller, which outputs a signal to the relay. The normally open contact of the relay closes, and the drive motor of the transmission belt mechanism 2 is started, moving the door covered with the plastic protective film towards the steam injection station. When the front end of the door covered with the plastic protective film is detected by the steam position sensor 6, a signal is transmitted to the controller. The controller connects the solenoid valve of the steam equipment through the relay, causing the valve to open and releasing hot steam to shrink the plastic protective film on the door. When the rear end of the door passes the steam position sensor 6, the steam position sensor 6 outputs a signal to the controller, which disconnects the solenoid valve of the steam equipment through the relay, stopping the steam injection. When the door passes the positions of the thick door counting sensor 7 and the thin door counting sensor 8, the thinner door will be... The counting sensor 8 detects that a thicker door will be detected by the thick door counting sensor 7. The thick door counting sensor 7 or the thin door counting sensor 8 will output a signal to the PLC counter, which will increment by one and continue to accumulate. This device, through the detection and cooperation of multiple photoelectric sensors, realizes the full automation of the shrinking process of the door covered with plastic protective film, and accurately controls the steam supply to avoid steam waste. It also automatically counts the door after shrinking, which facilitates production management and inventory statistics, reduces manual intervention, reduces the chance of personnel coming into contact with hot steam, and greatly improves the production efficiency of shrinking processing and increases production safety. The control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power component and the power supply are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. An automatic steam shrink film machine, characterized in that, include: The machine body (1) has a transmission belt mechanism (2) fixedly installed on the inner walls of both sides. The top of the machine body (1) is fixedly connected to two convex side baffles. One of the convex side baffles has a feed position sensor (5) fixedly installed on one side inner wall. The feed position sensor (5) is located on the upper side of one end of the transmission belt mechanism (2). One of the convex side baffles has a steam position sensor (6) fixedly installed on one side inner wall. The steam position sensor (6) is located in front of the steam injection station of the machine body (1). One of the convex side baffles has a thick door counting sensor (7) and a thin door counting sensor (8) fixedly connected on one side inner wall. The thick door counting sensor (7) and the thin door counting sensor (8) are both located on the upper side of the other end of the transmission belt mechanism (2). The thick door counting sensor (7) is located on the upper side of the thin door counting sensor (8).

2. The automatic steam shrink film machine according to claim 1, characterized in that: A baffle (4) is fixedly connected between the top of the machine body (1) and the corresponding convex side baffle, and a square hole is provided on the baffle (4).

3. The automatic steam shrink film machine according to claim 1, characterized in that: A vapor diffusion grid (3) is fixedly installed on the top of the two convex side baffles.

4. The automatic steam shrink film machine according to claim 3, characterized in that: The vapor diffusion grid (3) is made of stainless steel.

5. The automatic steam shrink film machine according to claim 1, characterized in that: The top of the machine body (1) is fixedly connected to two support frames (10), and a rotating shaft (9) is rotatably connected between the two support frames (10). A pressure plate (11) is fixedly connected to the bottom of the rotating shaft (9).

6. The automatic steam shrink film machine according to claim 5, characterized in that: The rotating shaft (9) and pressure plate (11) are made of stainless steel.