Elastic sheet bearing mechanism for strip pasting machine and manufacturing method

Abstract

The invention relates to an elastic sheet bearing mechanism for a strip pasting machine and a manufacturing method. The elastic sheet bearing mechanism for the strip pasting machine comprises a bearing soft cushion. The bearing soft cushion comprises a bottom layer and a release layer attached to the top of the bottom layer; the bearing soft cushion is used for bearing an elastic sheet which sequentially comprises an elastic layer and back glue from top to bottom and is bonded with the back glue. The bearing soft cushion adheres to the back glue of the borne elastic sheet through the release layer so as to reduce the adhesive force between the bearing soft cushion and the back glue, so that the back glue of the elastic strip can resist the adhesive force between the back glue and the bearing soft cushion when the strip pasting head extracts the elastic strip cut from the elastic sheet subsequently, the back glue of the elastic strip can be separated from the bearing soft cushion, and the elastic strip can be separated from the bearing soft cushion. And therefore, the elastic strip is taken out from the remaining elastic sheet, and the quality of the strip which is subsequently adhered to the cutting die plate is ensured. And the taken-out elastic strip is provided with back glue, has viscosity and can be directly adhered to a cutting die plate, so that the process is simplified, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of labeling machine technology, and in particular to an elastic sheet support mechanism for labeling machines and its manufacturing method. Background Technology

[0002] Flat die-cutting molds are widely used tools in the packaging industry. They use blades set on a template to cut or crease packaging materials to meet the needs of various packaging forming processes. Elastic sheets are usually attached to the die template on both sides of the blade edge to assist cutting and protect the blade.

[0003] Currently, the industry commonly uses a strip-applying machine to cut elastic sheets, then removes the cut elastic strips and pastes them onto a die template. However, the bonding of elastic sheets is mainly achieved by applying adhesive to the surface of the sheet or die template. This method requires specialized adhesive application equipment and adds an independent adhesive application process, resulting in a complex process and an increase in production steps.

[0004] Therefore, to improve strip application efficiency, the applicant eliminated the adhesive application process and used an elastic sheet with its own adhesive properties for the strip application. However, this elastic sheet adheres to the support mechanism used to hold it, making it impossible to remove the elastic strips cut from the sheet. Therefore, there is an urgent need for a support mechanism suitable for holding an elastic sheet with its own adhesive properties. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an elastic sheet bearing mechanism and manufacturing method for a strip applicator, which provides a bearing mechanism that is suitable for bearing elastic sheets that are sticky.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, embodiments of the present invention provide an elastic sheet support mechanism for a strip applicator, including a support pad;

[0010] The support pad includes a bottom layer and a release layer attached to the top of the bottom layer;

[0011] The support pad is used to support an elastic sheet material consisting of an elastic layer and an adhesive backing, from top to bottom, and is bonded to the adhesive backing.

[0012] According to the present invention, the bottom layer is a felt pad, a plastic pad, or includes a base paper and a coating disposed on top of the base paper.

[0013] According to the present invention, the release layer is a silicon-based release coating layer or a non-silicon-based release coating layer.

[0014] According to the present invention, the release layer is a silicone oil layer.

[0015] According to the present invention, the supporting pad is provided with vents capable of connecting to negative pressure, so as to adsorb the elastic sheet onto the supporting pad; and / or,

[0016] It also includes a support frame; the support pad is disposed on the top of the support frame; the support frame is provided with a clamping mechanism for clamping the edge of the elastic sheet onto the support pad.

[0017] According to the present invention, it further includes a negative pressure pump, which is connected to the bottom of the support pad through a pipeline and is used to output negative pressure suction to the vent holes on the support pad.

[0018] According to the present invention, the clamping mechanism includes a clamping plate and a locking member; the clamping plate is capable of pressing against the top edge of the elastic sheet, and the locking member is capable of locking the clamping plate onto the support frame; or,

[0019] The clamping mechanism includes a clamping plate and a lifting driver; the main body of the lifting driver is fixed on the support frame, and the driving end is fixedly connected to the clamping plate; the lifting driver is used to drive the clamping plate to rise and fall, so that the clamping plate presses against the edge of the elastic sheet.

[0020] In a second aspect, the present invention also provides a method for manufacturing an elastic sheet bearing pad for a strip applicator, comprising the following steps:

[0021] S1. Apply a release agent coating to the top of the base layer;

[0022] S2. The release agent coating solidifies to form a release layer, and the bottom layer and the release layer form a support cushion.

[0023] According to the present invention, in step S2,

[0024] The release agent coating solidifies at room temperature to form the release layer; or...

[0025] Bake the release agent coating to allow it to solidify and form a release layer.

[0026] According to the present invention, the release agent coating is a silicon-based release coating layer or a non-silicon-based release coating layer.

[0027] According to the present invention, the release agent coating is silicone oil.

[0028] (III) Beneficial Effects

[0029] The beneficial effects of this invention are as follows: In the elastic sheet support mechanism of this strip applicator, the support pad adheres to the adhesive backing of the elastic sheet through a release layer, thereby reducing the adhesive force between the support pad and the adhesive backing. This allows the adhesive backing of the elastic strip, cut from the elastic sheet, to resist the adhesive force between the adhesive backing and the support pad when the strip applicator head subsequently extracts the elastic strip. This enables the adhesive backing of the elastic strip to detach from the support pad, allowing the elastic strip to be removed from the remaining elastic sheet. This avoids adhesive residue or deformation of the elastic strip, ensuring the quality of the strip applied to the cutting template. The extracted elastic strip, with its adhesive backing, is inherently sticky and can be directly applied to the cutting template without requiring additional gluing treatment of the cutting template or the surface of the elastic strip. This simplifies the process, improves strip applicator efficiency, simplifies the device structure, and reduces costs. Furthermore, the support pad is relatively soft, preventing damage to the cutting tool when the cutting head contacts it. Attached Figure Description

[0030] Figure 1 This is an exploded view of the elastic sheet support mechanism and the elastic sheet used in the strip applicator;

[0031] Figure 2 A schematic diagram of an elastic sheet support mechanism for a stripping machine, which supports the elastic sheet and includes a negative pressure pump and a clamp.

[0032] Figure 3 This is a schematic diagram showing the material being inserted into the elastic layer of the elastic strip to attach the adhesive strip.

[0033] [Explanation of Labels in the Attached Image]

[0034] 11: Support frame; 12: Support pad; 121: Bottom layer; 122: Release layer; 13: Negative pressure pump; 14: Clamp; 141: Lifting drive component; 142: Clamping plate;

[0035] 2: Affix a label;

[0036] 500: Elastic sheet; 501: Elastic layer; 502: Adhesive backing. Detailed Implementation

[0037] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. Wherein, the terms "upper" and "lower" as used herein refer to... Figure 1 The vertical orientation is used as a reference.

[0038] See Figure 1-3 The elastic sheet support mechanism for a strip applicator proposed in this embodiment of the invention includes a support pad 12.

[0039] The support pad 12 includes a bottom layer 121 and a release layer 122 attached to the top of the bottom layer 121. The support pad 12 is used to support and bond to an elastic sheet 500, which includes an elastic layer 501 and an adhesive backing 502 from top to bottom.

[0040] The supporting pad 12 adheres to the adhesive 502 of the elastic sheet 500 it supports via the release layer 122, reducing the adhesive force between the pad and the adhesive 502. This allows the adhesive 502 of the elastic strip to resist the adhesive force between the adhesive 502 and the supporting pad 12 when the strip cutting head 2 removes the elastic strip cut from the elastic sheet 500. This allows the adhesive 502 of the elastic strip to detach from the supporting pad 12, enabling the elastic strip to be removed from the remaining elastic sheet 500. This avoids adhesive 502 residue or deformation of the elastic strip, ensuring the quality of the strip subsequently applied to the cutting template. The removed elastic strip, with its adhesive 502, is inherently sticky and can be directly applied to the cutting template without requiring additional gluing treatment of the template or the elastic strip's surface. This simplifies the process, improves strip application efficiency, simplifies the device structure, and reduces costs. Furthermore, the supporting pad 12 is relatively soft, preventing damage to the cutting tool when the cutting head contacts it.

[0041] Furthermore, the bottom layer 121 is a felt pad, a plastic pad, or may include base paper and a coating on top of the base paper. The material of the bottom layer 121 is relatively soft to avoid damaging the cutting tool during the cutting process. Among them, the felt pad has good cushioning properties, the plastic pad is highly durable, and the coated base paper is inexpensive. In actual use, different bottom layer materials can be selected according to different production environments and cost requirements.

[0042] It should be noted that the base paper and the bottom layer 121 formed by the coating on top of the base paper, after the release layer 122 is attached to their surface, form release paper.

[0043] When the bottom layer 121 includes the base paper and the coating on top of the base paper, the base paper is preferably cardboard. The cardboard of the conventional type is thicker, which can prevent the cutting head 3 from cutting through it.

[0044] Preferably, the thickness of the bottom layer 121 is at least 2 mm to prevent the cutting head 3 from cutting through the bottom layer 121.

[0045] Furthermore, the release layer 122 is a silicon-based release coating layer or a non-silicon-based release coating layer.

[0046] In silicone-based release coatings, the release function is primarily provided by organosilicon compounds, such as silicone resins and silicone oils. In non-silicone-based release materials, the release function is mainly provided by polymers that do not contain organosilicon, including the following categories: long-chain alkyl polymers, acrylic resins, fluorocarbon polymers, or other polyolefins (such as polymethylpentene, atactic polypropylene, etc.).

[0047] Silicone-based release coatings offer stable performance and provide good and consistent release for most adhesives, but there is a risk of siloxane oligomer migration to the adhesive interface. Non-silicone-based release coatings, on the other hand, are more selective in their application to different adhesive types, their peel strength is more sensitive to process and environmental parameters, and they meet environmental protection requirements. In practice, the most suitable release layer solution can be selected based on the specific chemical properties of the adhesive 502 on the elastic sheet 500 to ensure effective peeling.

[0048] Preferably, the release layer 122 is a silicone-based release coating layer, specifically a silicone oil layer. Silicone oil is a mature and efficient release agent with stable performance, providing uniform and durable release force, ensuring that the elastic sheet 500 can achieve consistent and reliable peeling under different environmental conditions, thus improving the stability of the process.

[0049] Furthermore, the elastic sheet 500 is fixed to the supporting pad 12 to prevent displacement of the elastic sheet 500 during the cutting and material handling processes, thereby ensuring cutting and material handling accuracy. The specific fixing method is as follows:

[0050] The bottom layer 121 is provided with ventilation holes 12111, which can be connected to negative pressure to adsorb the elastic sheet 500 onto the support pad 12; and / or, the edge of the elastic sheet 500 can be clamped onto the support pad 12.

[0051] The negative pressure adsorption method generates a vertically downward and evenly distributed adsorption force on the elastic sheet 500, which is particularly suitable for the bearing pad 12 with its own ventilated holes. It effectively overcomes the tendency to warp and achieves flat fixation across the entire surface. The edge clamping method is particularly suitable for fixing the bearing pad 12, which is not porous and requires machining to create openings. In use, one can choose to use either negative pressure adsorption or edge clamping to fix the elastic sheet 500 to the bearing pad 12, or both methods can be used simultaneously to prevent displacement of the elastic sheet during cutting and material handling, thus ensuring cutting and material handling accuracy. Preferably, the simultaneous use of negative pressure adsorption and edge clamping, i.e., fixing both the surface and the edge simultaneously, improves the fixing effect of the elastic sheet 500.

[0052] Specifically, when the bottom layer 121 is a felt pad, the felt pad itself has ventilation holes 1211. When the bottom layer 121 is a plastic pad, or includes a base paper and a coating on top of the base paper, if it is necessary to fix the elastic sheet 500 to the supporting soft pad 12 by negative pressure adsorption, ventilation holes 1211 can be evenly distributed on the bottom layer 121.

[0053] Preferably, the bottom layer 121 is made of felt, which is relatively soft and has its own ventilation holes 12111, which facilitates the subsequent connection of negative pressure to adsorb the elastic sheet 500 onto the supporting soft pad 12.

[0054] Furthermore, this elastic sheet support mechanism also includes a support frame 11.

[0055] The support pad 12 is located on the top of the support frame 11, which supports the support pad 12 and can be placed on the frame.

[0056] Furthermore, when the elastic sheet 500 can be adsorbed onto the support pad 12, the elastic sheet support mechanism also includes a negative pressure pump 13. The negative pressure pump 13 is connected to the bottom of the support pad 12 through a pipeline and is used to output negative pressure suction to the vent holes 1211 on the support pad 12 so as to adsorb the elastic sheet 500 onto the support pad 12.

[0057] Furthermore, when the edge of the elastic sheet 500 can be clamped onto the support pad 12: the support frame 11 is provided with a clamping mechanism for clamping the edge of the elastic sheet 500 onto the support pad 12.

[0058] Optionally, the clamping mechanism includes a clamping plate 142 and a locking member. The clamping plate can press against the top edge of the elastic sheet 500, and the locking member can lock the clamping plate 142 onto the support frame 11.

[0059] The locking component can be a threaded fastener or a quick-release locking pin, or other mechanisms that can achieve locking.

[0060] When the locking element is a threaded fastener or a quick-release locking pin, both the clamping plate 142 and the support frame 11 have insertion holes, and the locking element can be inserted into the insertion holes on the clamping plate 142 and the support frame 11 to lock the clamping plate 142 onto the support frame 11.

[0061] Preferably, multiple clamping mechanisms are arranged at intervals along the edge of the support frame 11 to expand the clamping range of the elastic sheet 500 edge and avoid local displacement of the elastic sheet 500.

[0062] Optionally, the clamping mechanism includes a clamping plate 142 and a lifting driver 141. The main body of the lifting driver 141 is fixed to the support frame 11, and the driving end is fixedly connected to the clamping plate 142. The lifting driver 141 is used to drive the clamping plate 142 to rise and fall, so that the clamping plate 142 presses against the edge of the elastic sheet 500.

[0063] The lifting driver 141 can be a cylinder, or it can include a motor and a transmission mechanism connected to the motor shaft, such as a gear rack, lead screw, or nut. Of course, the lifting driver 141 can also be other drivers capable of driving the clamping plate 142 to rise and fall.

[0064] Furthermore, based on the above settings, the method for manufacturing the elastic sheet bearing pad for the strip applicator includes the following steps:

[0065] S1. Apply a release agent coating to the top of the bottom layer 121.

[0066] S2. The release agent coating solidifies to form a release layer 122, and the bottom layer 121 and the release layer 122 form a support cushion 12.

[0067] Specifically, in step S2,

[0068] Release agent coating solidifies at room temperature to form release layer 122; or,

[0069] Bake the release agent coating to solidify it and form release layer 122.

[0070] Room temperature solidification is energy-efficient and requires minimal equipment, making it suitable for small batches or substrates with poor heat resistance. Baking, on the other hand, can significantly shorten the production cycle and improve efficiency, making it suitable for large-scale, rapid production.

[0071] Preferably, in step S2, in order to accelerate the solidification efficiency, the solidification of the release agent coating is accelerated by increasing air circulation (e.g., using a fan or blower to send room temperature air to the coating surface) at room temperature.

[0072] Optionally, in step S2, the baking method is as follows: the bottom layer 121 coated with the release agent coating is baked in a high-temperature oven. The baking temperature is between room temperature and 180°C, and the baking time is set to meet the requirement that the release agent coating solidifies without damaging the bottom layer 121.

[0073] Preferably, the baking temperature is 160°C.

[0074] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flexible sheet support mechanism for a strip applicator, characterized in that, Including the support cushion (12); The support pad (12) includes a bottom layer (121) and a release layer (122) attached to the top of the bottom layer (121). The support pad (12) is used to support the elastic sheet (500) which includes an elastic layer (501) and an adhesive backing (502) from top to bottom, and is bonded to the adhesive backing (502).

2. The elastic sheet bearing mechanism for a strip applicator as described in claim 1, characterized in that, The bottom layer (121) is a felt pad, a plastic pad, or includes a base paper and a coating on top of the base paper.

3. The elastic sheet bearing mechanism for a strip applicator as described in claim 1, characterized in that, The release layer (122) is a silicon-based release coating layer or a non-silicon-based release coating layer.

4. The elastic sheet bearing mechanism for a strip applicator as described in claim 3, characterized in that, The release layer (122) is a silicone oil layer.

5. The elastic sheet bearing mechanism for a strip applicator as described in claim 1, characterized in that, The supporting pad (12) is provided with ventilation holes (1211) that can connect to negative pressure, so as to adsorb the elastic sheet (500) onto the supporting pad (12); and / or, It also includes a support frame (11); the support pad (12) is located on the top of the support frame (11); the support frame (11) is provided with a clamping mechanism for clamping the edge of the elastic sheet (500) onto the support pad (12).

6. The elastic sheet bearing mechanism for a strip applicator as described in claim 5, characterized in that, It also includes a negative pressure pump (13), which is connected to the bottom of the support pad (12) through a pipeline and is used to output negative pressure suction to the air vents (1211) on the support pad (12).

7. The elastic sheet bearing mechanism for a strip applicator as described in claim 5, characterized in that, The clamping mechanism includes a clamping plate (142) and a locking member; the clamping plate is capable of pressing against the top edge of the elastic sheet (500), and the locking member is capable of locking the clamping plate (142) onto the support frame (11); or, The clamping mechanism includes a clamping plate (142) and a lifting driver (141); the main body of the lifting driver (141) is fixed on the support frame (11), and the driving end is fixedly connected to the clamping plate (142); the lifting driver (141) is used to drive the clamping plate (142) to rise and fall, so that the clamping plate (142) presses against the edge of the elastic sheet (500).

8. A method for manufacturing an elastic sheet bearing pad for a strip applicator, characterized in that, Includes the following steps: S1. Apply a release agent coating to the top of the bottom layer (121); S2, the release agent coating solidifies to form a release layer (122), and the bottom layer (121) and the release layer (122) form a support cushion (12).

9. The method for manufacturing an elastic sheet bearing pad for a strip applicator as described in claim 8, characterized in that, In step S2, The release agent coating solidifies at room temperature to form the release layer (122); or... Bake the release agent coating to allow it to solidify and form a release layer (122).

10. The method for manufacturing an elastic sheet bearing pad for a strip applicator as described in claim 8, characterized in that, The release agent coating is a silicon-based release coating layer or a non-silicon-based release coating layer.

11. The method for manufacturing an elastic sheet bearing pad for a strip applicator as described in claim 8, characterized in that, The release agent coating is silicone oil.

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