Double-ring heat sealing device
By designing a double-ring heat sealing device, the problem of low heat conduction efficiency of traditional heat sealing devices is solved, achieving uniform heat sealing and stable sealing of the applied composite film, thus improving the sealing quality and the stability of drug preservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ZHONGTAIBANG PHARM TECH CO LTD
- Filing Date
- 2025-06-15
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional single-sided hot plate heat sealing devices have low heat conduction efficiency, resulting in poor sealing of the composite film. Heat cannot penetrate multiple layers of materials simultaneously, leading to weak interlayer bonding, uneven sealing lines, and a high risk of drug evaporation and contamination.
A double-ring heat sealing device is adopted, in which two sets of coaxially opposite heat sealing rings are synchronously pressed along the axial direction under the control of the drive mechanism to achieve uniform heat action on both sides of the composite film. Combined with protective cover, heat insulation column and cooling channel, the heat conduction and sealing effect are optimized.
It achieves full cross-linking and fusion of the composite film in the thickness direction, eliminates defects such as weak interlayer bonding and uneven sealing lines, improves heat sealing effect, and reduces the risk of drug evaporation and contamination.
Smart Images
Figure CN224211381U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of material heat sealing equipment, and particularly relates to a double-ring heat sealing device. Background Technology
[0002] Traditional single-sided hot plate heat sealing devices have significant drawbacks in the production of adhesive dressings. Because they seal the composite film using only one-sided heating, heat conduction efficiency is low, leading to prolonged heat sealing time. Furthermore, since heat cannot penetrate multiple layers simultaneously, problems such as weak interlayer bonding and uneven seal width easily occur. This causes the medication carried by the internal foam to slowly evaporate through micro-gaps during storage, reducing the stability of the medication's efficacy and creating a risk of residual medication contamination after the dressing is opened. Therefore, it is necessary to solve these technical problems. Utility Model Content
[0003] The purpose of this application is to provide a double-ring heat sealing device to solve the technical problem of poor heat sealing effect in the prior art.
[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a double-ring heat sealing device, comprising:
[0005] frame;
[0006] A heating assembly is connected to the frame and two sets are arranged accordingly. The heating assembly includes a heat-sealing ring for contacting the target material, an electric heating device for generating heat, and a heating body connected between the electric heating device and the heat-sealing ring for conducting heat. The heat-sealing rings in the two sets of heating assemblies are coaxially spaced and opposite to each other.
[0007] A drive mechanism is connected to the heat-sealing rings and is used to drive the two heat-sealing rings to move closer or further apart, wherein the direction of movement of the heat-sealing rings is parallel to their own axial direction.
[0008] Optionally, at least one set of the heating components further includes a heat-insulating protective cover;
[0009] At least a portion of the heating element and the electric heating device, which are grouped together with the protective cover, are disposed inside the protective cover. The protective cover also has a groove for the electric heating device to be electrically connected to an external power supply device.
[0010] Optionally, the heating element in at least one group of the heating assemblies forms a conical segment and is connected to the heat-sealing ring through the conical segment.
[0011] Optionally, the double-ring heat sealing device further includes side guide plates spaced apart on the frame, with adjacent side guide plates forming a gap for the target material to pass through and for guiding the target material between adjacent heat sealing rings.
[0012] Optionally, the double-ring heat sealing device further includes a material guide support plate;
[0013] The material guide support plate has a waist-shaped hole and is connected to the frame through the waist-shaped hole. The extension direction of the waist-shaped hole is parallel to the axial direction of the heat-sealing ring. The side guide plate is connected to the material guide support plate.
[0014] Optionally, the drive mechanism includes a drive cylinder and a guide column respectively mounted on the frame, and also includes a slide plate connected to the power end of the drive cylinder and slidably connected to the guide column;
[0015] The heating component is mounted on the slide plate, and the output direction of the drive cylinder and the axial direction of the guide post are both parallel to the moving direction of the heat sealing ring.
[0016] Optionally, the heating assembly further includes a heat-insulating column capable of providing thermal insulation;
[0017] The heat insulation column is placed between the sliding plate and the heating element and is used to support the heating element.
[0018] Optionally, the slide plate is provided with cooling channels for the introduction of cooling medium.
[0019] The beneficial effects of the double-ring heat sealing device provided in this application are as follows: Compared with the prior art, in the double-ring heat sealing device provided in this application, by having two sets of coaxially opposite heat sealing rings press synchronously along the axial direction under the control of the driving mechanism, the two sides of the composite film can be subjected to uniform heat at the same time, so as to achieve full cross-linking and fusion of the material molten layer in the thickness direction, thereby completely eliminating the defects of weak interlayer bonding and uneven sealing line caused by traditional single-sided heat sealing. Thus, the double-ring heat sealing device in this application can form a better heat sealing effect in the application production process, which is far superior to the prior art. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of the double-ring heat sealing device in the embodiments of this application;
[0022] Figure 2 This is a front view of the overall structure of the double-ring heat sealing device in the embodiments of this application;
[0023] Figure 3 This is a side view of the overall structure of the double-ring heat sealing device in the embodiments of this application;
[0024] Figure 4 This is a schematic diagram of the overall structure of one set of heating components in one embodiment of this application;
[0025] Figure 5 This is a schematic diagram of the overall structure of another set of heating components in an embodiment of this application.
[0026] The reference numerals in the figures are as follows: 101, frame; 102, heat sealing ring; 103, electric heating device; 104, heating element; 105, protective cover; 106, groove; 107, conical section; 108, side guide plate; 109, material guide support plate; 110, waist-shaped hole; 111, drive cylinder; 112, guide post; 113, sliding plate; 114, heat insulation column; 115, cooling channel. Detailed Implementation
[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this application.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0031] Please refer to the following: Figures 1 to 5The present application provides a description of a double-ring heat-sealing device according to an embodiment. This double-ring heat-sealing device includes a frame 101, a heating assembly, and a driving mechanism. Wherein:
[0032] Two sets of heating components are connected to the frame 101. Each heating component includes a heat-sealing ring 102 for contacting the target material, an electric heating device 103 for generating heat, and a heating element 104 connected between the electric heating device 103 and the heat-sealing ring 102 for conducting heat. The heat-sealing rings 102 in the two sets of heating components are coaxially spaced relative to each other. A driving mechanism is connected to the heat-sealing rings 102 and drives the two heat-sealing rings 102 to move closer or further apart. The direction of movement of the heat-sealing rings 102 is parallel to its own axial direction. In this embodiment, the electric heating device 103 can be a commonly used electric heating device in the art, such as an electric heating tube. The heat-sealing rings 102 and the heating element 104 can be made of commonly used thermally conductive materials in the art, such as metals or polymers, which will not be elaborated further here.
[0033] According to the structure provided in this embodiment, by synchronously pressing two sets of coaxially opposite heat-sealing rings 102 along the axial direction under the control of the driving mechanism, the two sides of the composite film can be subjected to uniform heat at the same time, realizing the full cross-linking and fusion of the material molten layer in the thickness direction. This completely eliminates the defects of weak interlayer bonding and uneven sealing line caused by traditional single-sided heat sealing. Thus, the double-ring heat-sealing device in this embodiment can form a better heat-sealing effect during the application production process. Furthermore, the heating components that are located at the top and bottom and can move away from each other synchronously can move away from the target material synchronously and quickly after heat sealing to reduce the thermal impact on the non-heat-sealed area of the target material. It also facilitates the smooth passage of the target material between the heat-sealing rings 102, which is far superior to the prior art.
[0034] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 At least one set of heating components also includes a heat-insulating protective cover 105; at least a portion of the heating element 104 and the electric heating device 103, which are in the same group as the protective cover 105, are disposed inside the protective cover 105, and the protective cover 105 is also provided with a groove 106 for electrically connecting the power supply heating device 103 to an external power supply device. For ease of explanation, this embodiment is described using the example of a protective cover 105 disposed in one set of heating components. According to the structure provided in this embodiment, the protective cover 105 can effectively isolate the heat on the heating element 104 from dissipating outward, which not only improves the heat conduction efficiency, but also effectively prevents the axial alignment of the heat sealing ring 102 from deviating due to overheating deformation of the external mechanism, which is also conducive to further improving the heat sealing effect of the double-ring heat sealing device in this embodiment.
[0035] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5At least one set of heating components includes a heating element 104 forming a conical segment 107, which is connected to a heat-sealing ring 102. For ease of explanation, this embodiment uses an example of setting the conical segment 107 in another set of heating components. According to the structure provided in this embodiment, the conical segment 107 can create a physically isolated area with increased spacing between the portion of the heating element 104 not connected to the heat-sealing ring 102 and the target material. This significantly reduces heat transfer in the non-contact area by increasing the heat radiation transfer distance, thereby effectively avoiding the defect of local overheating and deformation of the adhesive material caused by the portion of the heating element 104 not connected to the heat-sealing ring 102. This also helps to further improve the heat-sealing effect of the double-ring heat-sealing device in this embodiment.
[0036] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The double-ring heat-sealing device also includes side guide plates 108 spaced apart on the frame 101. Adjacent side guide plates 108 cooperate to form a gap for the target material to pass through and guide the target material between adjacent heat-sealing rings 102. According to the structure provided in this embodiment, the spaced side guide plates 108 can guide the target material, allowing it to pass more accurately through the area between adjacent heat-sealing rings 102, which further improves the heat-sealing effect of the double-ring heat-sealing device in this embodiment.
[0037] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The double-ring heat sealing device also includes a material guide support plate 109; a waist-shaped hole 110 is formed on the material guide support plate 109 and connected to the frame 101 through the waist-shaped hole 110. The extension direction of the waist-shaped hole 110 is parallel to the axial direction of the heat sealing ring 102, and a side guide plate 108 is connected to the material guide support plate 109. According to the above structure provided in this embodiment, since the waist-shaped hole 110 extends in the axial direction of the heat sealing ring 102, the material guide support plate 109 can be adjusted in position relative to the frame 101 in the axial direction of the heat sealing ring 102 through the waist-shaped hole 110. This can drive the side guide plate 108 connected to the material guide support plate 109 to move along the axial direction of the heat sealing ring 102, thereby helping the side guide plate 108 to more adaptably guide the target material between the heat sealing rings 102, which also helps to further improve the heat sealing effect of the double-ring heat sealing device in this embodiment.
[0038] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5The driving mechanism includes a driving cylinder 111 and a guide post 112 respectively mounted on the frame 101, and a sliding plate 113 connected to the power end of the driving cylinder 111 and slidably connected to the guide post 112. A heating component is disposed on the sliding plate 113. The output direction of the driving cylinder 111 and the axial direction of the guide post 112 are both parallel to the moving direction of the heat-sealing ring 102. According to the structure provided in this embodiment, the sliding connection between the guide post 112 and the sliding plate 113 can constrain the sliding plate 113 to move linearly along the axial direction of the heat-sealing ring 102, ensuring no radial offset during the pressing process of the double heat-sealing rings 102. This also helps to further improve the heat-sealing effect of the double-ring heat-sealing device in this embodiment.
[0039] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The heating assembly also includes a heat-insulating column 114; the heat-insulating column 114 is placed between the sliding plate 113 and the heating element 104 and is used to support the heating element 104. According to the structure provided in this embodiment, the heat-insulating column 114 can effectively isolate the heat transfer from the heating element 104 to the sliding plate 113, thereby preventing the sliding plate 113 from deforming due to heat and causing the heat-sealing ring 102 to shift axially. This also helps to further improve the heat-sealing effect of the double-ring heat-sealing device in this embodiment.
[0040] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The slide plate 113 has a cooling channel 115 inside for introducing a cooling medium. In this embodiment, the cooling medium can be a cooling liquid or cooling gas commonly used in the art. According to the structure provided in this embodiment, by providing a cooling channel 115 inside the slide plate 113 and injecting a cooling medium, the thermal deformation of the slide plate 113 structure caused by heat conduction can be completely blocked, thereby ensuring that the axial movement trajectory of the heat sealing ring 102 is accurate and without deviation. This also helps to further improve the heat sealing effect of the double-ring heat sealing device in this embodiment.
[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A double-ring heat sealing device, characterized in that, include: Frame (101); A heating assembly is connected to the frame (101) and two sets are provided accordingly. The heating assembly includes a heat-sealing ring (102) for contacting the target material, an electric heating device (103) for generating heat, and a heating element (104) connected between the electric heating device (103) and the heat-sealing ring (102) for conducting heat. The heat-sealing rings (102) in the two sets of heating assemblies are coaxially spaced and opposite to each other. The driving mechanism is connected to the heat sealing ring (102) and is used to drive the two heat sealing rings (102) to move closer or further apart from each other. The direction of movement of the heat sealing ring (102) is parallel to its own axis.
2. The double-ring heat-sealing device as described in claim 1, characterized in that: At least one set of the heating components also includes a heat-insulating protective cover (105); At least a portion of the heating element (104) and the electric heating device (103) in the same group as the protective cover (105) are disposed inside the protective cover (105), and the protective cover (105) is also provided with a groove (106) for the electric heating device (103) to be electrically connected to an external power supply device.
3. The double-ring heat sealing device as described in claim 2, characterized in that: At least one set of the heating components has a heating element (104) forming a conical segment (107) and connected to the heat-sealing ring (102) through the conical segment (107).
4. The double-ring heat-sealing device as described in claim 1, characterized in that: The double-ring heat sealing device also includes side guide plates (108) spaced apart on the frame (101), with adjacent side guide plates (108) forming a gap for the target material to pass through and for guiding the target material between adjacent heat sealing rings (102).
5. The double-ring heat-sealing device as described in claim 4, characterized in that: The double-ring heat sealing device also includes a material guide support plate (109). The material guide support plate (109) has a waist-shaped hole (110) and is connected to the frame (101) through the waist-shaped hole (110). The extension direction of the waist-shaped hole (110) is parallel to the axial direction of the heat sealing ring (102). The side guide plate (108) is connected to the material guide support plate (109).
6. The double-ring heat-sealing device according to any one of claims 1-5, characterized in that: The drive mechanism includes a drive cylinder (111) and a guide column (112) respectively mounted on the frame (101), and also includes a slide plate (113) connected to the power end of the drive cylinder (111) and slidably connected to the guide column (112). The heating assembly is mounted on the slide plate (113), and the output direction of the drive cylinder (111) and the axial direction of the guide post (112) are both parallel to the moving direction of the heat sealing ring (102).
7. The double-ring heat-sealing device as described in claim 6, characterized in that: The heating assembly also includes a heat-insulating column (114) capable of heat insulation. The heat insulation column (114) is placed between the sliding plate (113) and the heating element (104) and is used to support the heating element (104).
8. The double-ring heat-sealing device as described in claim 6, characterized in that: The slide plate (113) is provided with a cooling channel (115) for the introduction of cooling medium.