Local covering device of corona machine

Abstract

The utility model discloses a local covering device for a corona machine, which comprises a corona assembly, a first cover plate, a second cover plate and a third cover plate, the corona assembly comprises a corona roller and an electrode arranged above the corona roller, the corona roller is transversely arranged, and a base material channel is arranged between the corona roller and the electrode; the covering assembly comprises a plurality of guide rollers and an annular covering belt, and the guide rollers are sequentially arranged along the inner circumference of the covering belt at intervals; the covering belt is provided with a covering section, and the covering section is arranged between the substrate channel and the electrode; and the transverse sizes of the corona roller and the electrode are greater than the transverse size of the covering belt. During operation, a printing base material passes through the base material channel, and corona treatment can be carried out on the printing base material through electrode discharge; by arranging the covering tape, the part, covered by the covering tape, of the printing base material can be prevented from being subjected to corona treatment, good heat sealing performance is kept, follow-up heat sealing machining is facilitated, and the problems that heat sealing is not firm, and a heat sealing opening is not flat are solved. The covering belt is arranged to be annular, the covering belt and the printing base material can operate synchronously, and abrasion is reduced.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing, and in particular to a partial covering device for a corona machine. Background Technology

[0002] Plastic products, such as woven plastic fabrics, require corona treatment before printing to increase ink adhesion. However, this treatment also reduces the heat-sealing performance of the plastic products. Current corona treatment devices use integral electrodes, which can only perform full-width corona treatment on the product. When these products need to be heat-sealed after printing, this can affect the heat-sealing process, leading to problems such as weak heat seals and uneven seal edges. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a partial covering device for a corona machine.

[0004] The corona machine partial masking device according to an embodiment of the present invention includes:

[0005] A corona discharge assembly includes a corona discharge roller and an electrode disposed above the corona discharge roller. The corona discharge roller is arranged laterally, and a substrate channel is provided between the corona discharge roller and the electrode.

[0006] The masking assembly includes a plurality of guide rollers and an annular masking belt, wherein the plurality of guide rollers are arranged sequentially at intervals along the inner circumference of the masking belt; the masking belt has a masking section disposed between the substrate channel and the electrode; the lateral dimensions of the corona roller and the electrode are both larger than the lateral dimension of the masking belt.

[0007] The partial masking device for the corona machine according to an embodiment of this utility model has at least the following technical effects: During operation, the printed substrate passes through the substrate channel, and the electrode discharge can perform corona treatment on the printed substrate; by setting a masking strip, the part of the printed substrate covered by the masking strip can avoid corona treatment, maintain good heat sealing performance, and facilitate subsequent heat sealing processing, avoiding problems such as weak heat sealing and uneven heat sealing edges. By setting the masking strip in a ring shape, the masking strip can run synchronously with the printed substrate, reducing wear.

[0008] According to some embodiments of the present invention, two adjacent guide rollers are both referred to as guide rollers, the covering section is disposed between the two guide rollers, and the top of the corona roller is disposed above the bottom of the two guide rollers.

[0009] According to some embodiments of the present invention, the upstream end and the downstream end of the substrate channel are respectively provided with an upstream channel and a downstream channel, and the upstream channel and the downstream channel are respectively located at the bottom of the two guide rollers.

[0010] According to some embodiments of the present invention, the guide rollers are provided at the upper front and upper rear of the electrode.

[0011] According to some embodiments of the present invention, at least one of the guide rollers is a limiting roller, and the outer periphery of the limiting roller is provided with two protruding edges, and the covering strip is disposed between the two protruding edges.

[0012] According to some embodiments of the present invention, the covering assembly further includes a support frame and a sliding seat that is slidably disposed on the support frame in a transverse direction, and the limiting roller is disposed on the sliding seat.

[0013] According to some embodiments of the present invention, a locking structure is provided between the support frame and the sliding seat.

[0014] According to some embodiments of the present invention, the covering strip and all the limiting rollers are collectively referred to as a covering unit, and the covering assembly includes a plurality of the covering units.

[0015] According to some embodiments of the present invention, the covering unit is provided at both the left and right ends of the substrate channel.

[0016] According to some embodiments of the present invention, one of the guide rollers is a tension roller.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a cross-sectional structural schematic diagram of the partial covering device for the corona machine according to an embodiment of the present invention;

[0020] Figure 2 This is a top view of the partial covering device for the corona machine according to an embodiment of the present invention.

[0021] In the attached image:

[0022] 100-Base frame; 101-Corona roller; 102-Electrode; 110-First roller; 120-Second roller; 130-Third roller; 140-Fourth roller; 200-Mask tape; 210-Mask section; 300-Support frame; 310-Slider; 320-Sliding seat; 330-Telescopic arm; 400-Printing substrate. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate 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 utility model. Furthermore, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number, while "above," "below," "within," etc., are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] The following is for reference. Figure 1 and Figure 2 This invention describes a partial covering device for a corona machine according to an embodiment of the present invention.

[0027] The corona machine partial covering device of this utility model includes a corona component and a covering component.

[0028] Reference Figure 1The corona assembly includes a base frame 100, a corona roller 101, and an electrode 102 disposed above the corona roller 101. The corona roller 101 is arranged horizontally and is rotatably disposed on the base frame 100. The electrode 102 is fixedly disposed on the base frame 100 and is in the shape of a horizontally arranged strip. A substrate channel is provided between the corona roller 101 and the electrode 102. The substrate channel is used for the passage of printing substrates that need to be corona treated. The substrate channel can be attached to the surface of the corona roller 101.

[0029] The masking assembly includes multiple guide rollers and an annular masking belt 200. The guide rollers are spaced apart sequentially along the inner circumference of the masking belt 200, with the axial direction of the guide rollers being transverse. The inner circumferential surface of the masking belt 200 is in contact with the guide rollers. The masking belt 200 is a flexible material component, allowing it to stably run around the multiple guide rollers. The masking belt 200 can be made of insulating materials such as plastic film, woven plastic fabric, or PVC canvas. The masking belt 200 is made using readily available consumables and has no special performance requirements. Various flexible... The materials used are all suitable, and the cost of use is low. The masking tape 200 has a masking section 210 that extends in the front-to-back direction. The masking section 210 is located between the substrate channel and the electrode 102. The masking section 210 can effectively block ionization sparks, so that the part of the printed substrate that is masked is protected from corona treatment. The transverse dimensions of the corona roller 101 and the electrode 102 are both larger than the transverse dimension of the masking tape 200. Therefore, the masking section 210 can only cover a part of the printed substrate, and the part that is not masked can be corona treated normally.

[0030] During operation, the printing substrate 400 passes through the substrate channel, and the electrode 102 discharges to perform corona treatment on the printing substrate; by setting the masking strip 200, the part of the printing substrate covered by the masking strip 200 can avoid corona treatment, maintain good heat sealing performance, which is conducive to subsequent heat sealing processing and avoids problems such as weak heat sealing and uneven heat sealing.

[0031] It is understood that the space between the corona roller 101 and the electrode 102 is small, and the printing substrate will partially contact the masking tape 200 during operation, which will lead to easy wear. In this embodiment, by setting the masking tape 200 to be ring-shaped, the masking tape 200 can run synchronously with the printing substrate, so that the two are relatively stationary at the contact point between the masking tape 200 and the printing substrate, thus reducing wear.

[0032] In some embodiments of this utility model, two adjacent guide rollers are both referred to as guide rollers, a masking section 210 is disposed between the two guide rollers, and the top of the corona roller 101 is disposed above the bottom of the two guide rollers. The guide rollers are arranged laterally and are rotatably mounted on the base frame 100. The two guide rollers are referred to as the first roller 110 and the second roller 120, respectively. The first roller 110 is disposed behind the corona roller 101, and the second roller 120 is disposed in front of the corona roller 101. The masking tape 200 passes sequentially across the lower side of the second roller 120, the upper side of the corona roller, and the lower side of the first roller 110 along its direction of movement, so that during operation, the masking tape 200 can closely adhere to the printing substrate and be driven by the printing substrate, achieving synchronous operation of the masking tape 200 and the printing substrate without the need for additional driving components.

[0033] In some embodiments of this utility model, the upstream and downstream ends of the substrate channel are respectively provided with an upstream channel and a downstream channel, which are respectively located at the bottom of the two guide rollers. The upstream channel is located on the lower side of the second roller 120, and the downstream channel is located on the lower side of the first roller 110. Both the upstream and downstream channels are used for the printing substrate to pass through. In this way, during operation, the masking tape 200 and the printing substrate are not only in contact at the corona roller 101, but also at the bottom of the two guide rollers, which increases the static friction between the masking tape 200 and the printing substrate and prevents relative slippage between the masking tape 200 and the printing substrate from causing wear.

[0034] In some embodiments of this utility model, guide rollers are provided above the front and above the rear of the electrode 102. The guide roller located above the front of the electrode 102 is called the third roller 130, and the guide roller located above the rear of the electrode 102 is called the fourth roller 140. The third roller 130 can be located directly above the second roller 120, and the fourth roller 140 can be located directly above the first roller 110. In this way, the covering strip 200 surrounds the outside of the electrode 102, and there is enough space inside the covering strip 200 to set the electrode 102, so as to prevent the covering strip 200 from contacting the electrode 102.

[0035] In some embodiments of this utility model, at least one guide roller is a limiting roller, and the outer periphery of the limiting roller is provided with two protruding edges, with the masking belt 200 disposed between the two protruding edges. When the upstream channel and downstream channel are respectively located at the bottom of the two guide rollers, and the guide rollers also serve to transport the printing substrate, the guide rollers are not limiting rollers and are not provided with the two protruding edges, in order to maintain the smooth transport of the printing substrate; when the upstream channel and downstream channel are far away from the guide rollers, the guide rollers can also be limiting rollers. By providing two protruding edges, the lateral position of the masking belt 200 is restricted by the two protruding edges, so that the masking belt 200 can run stably and does not deviate.

[0036] In some embodiments of this utility model, the covering assembly further includes a support frame 300 and a sliding seat 320 slidably disposed on the support frame 300, with a limiting roller disposed on the sliding seat 320. The support frame 300 can be fixedly placed on the ground, or it can be fixedly connected to the base frame 100; thus, the lateral position of the limiting roller can be adjusted, thereby adjusting the area covered by the covering strip 200. In this embodiment, the third roller 130 and the fourth roller 140 can both be configured as limiting rollers.

[0037] In some embodiments of this utility model, a locking structure is provided between the support frame 300 and the sliding seat 320. The support frame 300 may be provided with a laterally extending slide rail, and the sliding seat 320 may be provided with a slider 310 with a locking device that is adapted to the slide rail, thereby realizing a sliding connection between the sliding seat 320 and the support frame 300. In this case, the locking device on the slider 310 is the locking structure between the support frame 300 and the sliding seat 320. Of course, in other embodiments of this utility model, the support frame 300 may be provided with a laterally arranged slide rod. In this case, the sliding seat 320 is a "C-shaped" adjustable clamp, and the locking structure is a locking bolt. Tightening the locking bolt causes the "C-shaped" adjustable clamp to clamp the slide rod, thereby fixing the relative position of the support frame 300 and the sliding seat 320. By setting a locking structure, locking and positioning can be performed after adjusting the lateral position of the limiting roller, making the position covered by the covering belt 200 more accurate.

[0038] In some embodiments of this invention, the masking belt 200 and all the limiting rollers are collectively referred to as a masking unit, and the masking assembly includes multiple masking units. These multiple masking units are arranged sequentially at intervals along the transverse direction; this allows for masking of multiple locations on the printing substrate, meeting usage requirements.

[0039] In some embodiments of this utility model, reference is made to Figure 2 The substrate channel has masking units at both the left and right ends. This covers the left and right edges of the printing substrate, and the width of the corona treatment can be adjusted by adjusting the lateral position of the limiting roller. It is understood that the splicing part of the product is generally located at the edge. This embodiment can be manufactured by adding components directly to an existing corona machine. Without changing the structure of the electrode 102 and the corona roller 101, the width of the corona treatment can be flexibly and quickly adjusted. It is particularly suitable for pre-printing corona treatment of heat-sealed spliced ​​products, ensuring both the adhesion of the printing ink and the heat-sealing performance of the spliced ​​parts. Furthermore, the number of masking units can be set to three: in addition to the masking units at the left and right edges of the substrate channel, a masking unit is also provided at the center line of the substrate channel.

[0040] In some embodiments of this utility model, one of the guide rollers is a tension roller. A third roller 130 can be configured as a tension roller; the tension roller can be a limiting roller with two convex edges, or it can be a regular roller without two convex edges. Taking a limiting roller with two convex edges as an example, a telescopic arm 330 is also provided between the tension roller and the sliding seat 320 connected to it. The telescopic arm 330 is vertically arranged, with one end connected to the sliding seat 320 and the tension roller located at the other end. Adjusting the extension and retraction of the telescopic arm 330 adjusts the vertical position of the tension roller, thereby adjusting the tension of the covering belt 200 to ensure stable operation of the covering belt 200. The telescopic arm 330 can be an electrically controlled adjustable component such as a cylinder or electric push rod, or it can be a manually adjustable component.

[0041] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A partial masking device for a corona machine, characterized in that, include: The corona assembly includes a corona roller (101) and an electrode (102) disposed above the corona roller (101). The corona roller (101) is arranged laterally, and a substrate channel is provided between the corona roller (101) and the electrode (102). The masking assembly includes a plurality of guide rollers and an annular masking strip (200), wherein the plurality of guide rollers are arranged sequentially at intervals along the inner circumference of the masking strip (200); the masking strip (200) has a masking section (210) disposed between the substrate channel and the electrode (102); the lateral dimensions of the corona roller (101) and the electrode (102) are both larger than the lateral dimension of the masking strip (200).

2. The corona machine partial masking device according to claim 1, characterized in that: Both of the two adjacent guide rollers are referred to as guide rollers, the covering section (210) is located between the two guide rollers, and the top of the corona roller (101) is located above the bottom of the two guide rollers.

3. The corona machine partial masking device according to claim 2, characterized in that: The upstream and downstream ends of the substrate channel are respectively provided with an upstream channel and a downstream channel, which are respectively located at the bottom of the two guide rollers.

4. The corona machine partial masking device according to claim 2, characterized in that: The guide rollers are provided on the upper front and upper rear sides of the electrode (102).

5. The corona machine partial masking device according to claim 1, characterized in that: At least one of the guide rollers is a limiting roller, and the outer periphery of the limiting roller is provided with two protruding edges, and the covering strip (200) is disposed between the two protruding edges.

6. The corona machine partial masking device according to claim 5, characterized in that: The covering assembly also includes a support frame (300) and a sliding seat (320) slidably disposed on the support frame (300) in a transverse direction, and the limiting roller is disposed on the sliding seat (320).

7. The corona machine partial masking device according to claim 6, characterized in that: A locking structure is provided between the support frame (300) and the sliding seat (320).

8. The corona machine partial masking device according to claim 5, characterized in that: The covering strip (200) and all the limiting rollers are collectively referred to as covering units, and the covering assembly includes a plurality of the covering units.

9. The corona machine partial masking device according to claim 8, characterized in that: The covering unit is provided at both the left and right ends of the substrate channel.

10. The corona machine partial masking device according to claim 1, characterized in that: One of the guide rollers is a tension roller.

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