Conveying mechanism capable of preventing film adhesion and film covering device

Abstract

The utility model discloses a conveying mechanism capable of preventing film adhesion. The conveying mechanism comprises a support, a first roll shaft and a second roll shaft. The first roll shaft and the second roll shaft are mounted on the bracket in parallel, and a gap space for a film-coated product to pass through is formed between the first roll shaft and the second roll shaft. A plurality of annular protrusions are arranged on the base bodies of the first roller shaft and the second roller shaft, and annular grooves are formed between the adjacent annular protrusions. Particularly, the annular protrusions on the first roller shaft and the annular grooves in the second roller shaft are in one-to-one correspondence in position and are the same in number, and similarly, the annular protrusions on the second roller shaft and the annular grooves in the first roller shaft are also in one-to-one correspondence in position and are the same in number. The film laminating machine has the beneficial effects that the electrostatic adsorption effect of a film laminating product is reduced, and the problem of film adhesion is effectively prevented. The utility model further discloses a film covering device capable of preventing the film from being adhered.

Description

Technical Field

[0001] The utility model relates to the technical field of film laminating, in particular to a conveying mechanism designed to prevent the film from adhering during the conveying process, and a film laminating device comprising the conveying mechanism. Background Art

[0002] The heating film laminating process is a post-printing processing technology that covers a plastic film on the surface of a printed matter and tightly combines the plastic film with the printed matter through heating and pressing. This process is widely used in the surface treatment of printed matters such as packaging boxes, shopping bags, book covers, poster advertisements, etc. to improve the brightness, durability, and aesthetics of the printed matter.

[0003] The working principle of the film laminating device is that the film laminating device first releases the film from the unwinding device, and then guides it into the heating zone through the guide roller. In the heating zone, the film is gradually softened under the action of the heating element. Subsequently, the softened film and the substrate are tightly adhered under the strong action of the hot pressing roller to form a firm adhesive layer. After completing the heating and adhesion steps, the film-laminated product will enter the cooling zone for cooling and shaping treatment. Finally, the film-laminated product will be conveyed to the winding or cutting mechanism for subsequent winding or cutting treatment.

[0004] However, during the heating process, a large amount of static electricity will be generated in the film, which causes the film-laminated product to adhere to the rear cover at the discharge port of the conveying mechanism of the film laminating device due to the action of static electricity when being conveyed to the winding or cutting mechanism, thus affecting the smooth discharge of the film, and further leading to a decline in product quality and a reduction in production efficiency. There is a solution in the prior art to install an electrostatic elimination device in the conveying mechanism, but it increases the complexity of the structure. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a mechanical film anti-adhesion conveying mechanism to solve the problem that the film-laminated product adheres to the rear cover at the discharge port of the conveying mechanism of the film laminating device due to the action of static electricity when being conveyed to the winding or cutting mechanism, thus affecting the smooth discharge of the film, and further leading to a decline in product quality and a reduction in production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A conveying mechanism for preventing film adhesion, comprising a bracket, a first roller shaft and a second roller shaft. The first roller shaft and the second roller shaft are installed on the bracket in parallel, and there is a gap space for the film-covered product to pass through between them. On the substrates of the first roller shaft and the second roller shaft, a number of annular protrusions are provided, and annular grooves are formed between adjacent annular protrusions. In particular, the annular protrusions on the first roller shaft correspond to the annular grooves on the second roller shaft one by one in position and are the same in number. Similarly, the annular protrusions on the second roller shaft also correspond to the annular grooves on the first roller shaft one by one in position and are the same in number. This design reduces the contact area between the film-covered product and the surface of the roller shaft and changes the force application mode of the film-covered product, thereby reducing the electrostatic adhesion effect.

[0008] Further, the number of annular protrusions on the first roller shaft is greater than or equal to 3 to ensure the stability of the film-covered product during conveying. At the same time, all the annular protrusions on the first roller shaft and the second roller shaft have flat and smooth top surfaces, which further reduces the friction with the film-covered product and reduces the adhesion risk.

[0009] Further, the annular protrusions on the first roller shaft and the second roller shaft have the same width in the direction of the roller shaft rotation axis, and the spacing between adjacent annular protrusions is equal. This uniform design ensures the smoothness of the film-covered product during conveying. At the same time, the annular protrusions on the first roller shaft and the annular grooves at the relative positions on the second roller shaft have the same width; similarly, the annular protrusions on the second roller shaft and the annular grooves at the relative positions on the first roller shaft also have the same width. This corresponding design further enhances the stability and conveying effect of the conveying mechanism.

[0010] Further, in order to ensure the smooth conveying of the film-covered product, the surface tangents of the annular protrusions on the first roller shaft are all on the same straight line; similarly, the surface tangents of the annular protrusions on the second roller shaft are also on the same straight line. The surface tangents between the annular protrusions on the first roller shaft and the surface tangents between the annular protrusions on the second roller shaft are parallel to each other, jointly forming a gap space for the film-covered product to pass through. This design ensures that the film-covered product will not be subjected to unnecessary resistance or deviation during conveying.

[0011] Further, for the convenience of use, the conveying mechanism further includes an annular groove, which is connected to the first roller shaft or the second roller shaft and is used to drive the first roller shaft or the second roller shaft to rotate, so as to drive the film-covered product to pass through the gap space for conveying.

[0012] Further, an adjusting mechanism is also provided on the bracket for adjusting the spacing between the first roller shaft and the second roller shaft to adapt to film-covered products of different thicknesses. This adjustable design enhances the versatility and flexibility of the conveying mechanism.

[0013] Further, in order to further reduce the impact of static electricity on the film-coated product, an electrostatic discharge structure is also provided on the bracket, which can discharge the static electricity on the bracket and safely introduce it to the ground, further reducing the electrostatic adhesion effect.

[0014] Finally, the present utility model also provides a film coating device, which includes a film coating mechanism and a conveying mechanism. The film coating mechanism is used to closely bond the film and the substrate under the strong action of the hot pressing roller, while the conveying mechanism is used to convey the film-coated product to the winding or cutting mechanism for subsequent winding or cutting treatment. In particular, the conveying mechanism is the above-mentioned conveying mechanism for preventing film adhesion, thus ensuring the stable conveying and high-quality processing of the film-coated product during the processing.

[0015] In summary, by applying the technical solution of the present utility model, the following beneficial effects are achieved: The design of the present utility model cleverly realizes the effective support and guidance of the film-coated product when passing through the gap between the first roller shaft and the second roller shaft. Its unique annular protrusion and annular groove structure significantly reduce the direct contact area between the film-coated product and the roller shaft substrate, thereby reducing the electrostatic adsorption effect and effectively preventing the film adhesion problem. In addition, since the annular protrusions on the first roller shaft and the annular protrusions on the second roller shaft are designed with a staggered distribution, their acting force directions are opposite, playing a good force balance role and further reducing the offset of the film-coated product to either side due to the electrostatic adsorption effect. Compared with the prior art, the structure of the present utility model is more concise, and complex static electricity elimination devices can be omitted, thereby reducing the equipment cost and maintenance complexity, and improving the production efficiency and product quality. Description of the Drawings

[0016] Figure 1 is the overall structure diagram of the conveying mechanism for preventing film adhesion in the embodiment of the present utility model;

[0017] Figure 2 is the exploded structure diagram of the conveying mechanism for preventing film adhesion in the embodiment of the present utility model;

[0018] Figure 3 is the partial structure diagram of the first roller shaft and the second roller shaft in the embodiment of the present utility model;

[0019] Figure 4 is the schematic diagram of the positional relationship between the annular protrusions and annular grooves on the first roller shaft and the second roller shaft of the present utility model;

[0020] Figure 5 is the structure diagram of the driving mechanism in Embodiment 1 of the present utility model;

[0021] Figure 6 is the overall structure diagram of the film coating device in the embodiment of the present utility model.

[0022] Description of the reference numerals: bracket 1, first roller shaft 2, second roller shaft 3, annular protrusion 4, annular groove 5, drive mechanism 6, first gear 61, second gear 62, second gear 63, fourth gear 64, film laminating mechanism 7, conveying mechanism 8 Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention, but it does not constitute a limitation on the protection scope of the present invention.

[0024] In the present invention, for a clearer description, the following explanations are made: When an observer observes the accompanying drawings, the left rear of the observer is set as the front, the right front of the observer is set as the rear, the left front of the observer is set as the right, the right rear of the observer is set as the left, the upper side of the observer is set as the upper, and the lower side of the observer is set as the lower. It should be noted that the terms "front side", "rear side", "upper side", "lower side", "inside", "above", "below", etc. in the text indicate the orientation or positional relationship based on the orientation or positional relationship set by the accompanying drawings, and are only for the purpose of clearly describing the present invention, rather than indicating or implying that the structures or components referred to must have a specific orientation or be constructed in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used for the purpose of clear or simplified description, and cannot be understood as indicating or implying relative importance or quantity.

[0025] Embodiment 1: Basic type of conveying mechanism for preventing film adhesion

[0026] This embodiment elaborates in detail a basic type of conveying mechanism for preventing film adhesion, and its design aims to effectively reduce the direct contact area and force application mode between the film-covered product and the roller shaft during the conveying process, thereby reducing the electrostatic adsorption effect and ensuring the stable conveying of the film-covered product.

[0027] 1. Structural composition

[0028] The conveying mechanism mainly consists of a bracket 1, a first roller shaft 2, a second roller shaft 3, an annular protrusion 4, an annular groove 5, a drive mechanism 6, and an adjustment mechanism (not marked in the figure), and the specific structure is as Figures 1 to 3 shown.

[0029] Bracket 1: Made of a strong metal material, with sufficient strength and stability, and is used to support and fix the first roller shaft 2 and the second roller shaft 3.

[0030] The first roller shaft 2 and the second roller shaft 3: The two roller shafts are installed in parallel on the bracket 1 with a certain spacing for the film-covered product to pass through. A number of annular protrusions 4 are provided on the substrates of the first roller shaft 2 and the second roller shaft 3, and annular grooves 5 are formed between adjacent annular protrusions 4. The height of the annular protrusions 4 or the depth of the annular grooves 5 is carefully designed to ensure that the film-covered product does not touch the bottom of the annular grooves 5 during the conveying process.

[0031] Distribution of the annular protrusions 4 and the annular grooves 5: As shown in the appendix Figure 5 shown, Figure 5 This shows a schematic diagram of the positional relationship between the annular protrusions and the annular grooves on the first roller shaft and the second roller shaft of the present utility model. Specifically, the annular protrusions 4 on the first roller shaft 2 correspond to the annular grooves 5 on the second roller shaft 3 one by one and have the same number. At the same time, the annular protrusions 4 on the first roller shaft 2 and the annular protrusions 4 on the second roller shaft 3 are staggeredly distributed. This design makes the number of annular protrusions 4 on the first roller shaft 2 the same as the number of annular grooves 5 on the second roller shaft 3, and vice versa.

[0032] Specifications of the annular protrusions 4: All the annular protrusions 4 on the first roller shaft 2 and the second roller shaft 3 have the same width in the direction of the roller shaft rotation axis, and all have a flat and smooth top surface, and the spacing between adjacent annular protrusions 4 is equal;

[0033] Specifications of the annular grooves 5: All the annular grooves 5 on the first roller shaft 2 and the second roller shaft 3 have the same width as the annular protrusions 4 at the relative positions in the direction of the roller shaft rotation axis, and the spacing between adjacent annular grooves 5 is equal.

[0034] The number of both the annular protrusions 4 and the annular grooves 5 is greater than or equal to 3. On the premise of ensuring material strength and processing cost, the more the number of the annular protrusions 4 and the annular grooves 5, the better. The upper limit number is not limited in this embodiment.

[0035] The driving mechanism 6: It is connected to the first roller shaft 2 or the second roller shaft 3 and is used to drive the roller shaft to rotate, so as to drive the film-covered product to be conveyed through the gap space. The driving mechanism 6 can adopt transmission devices such as motors and speed reducers to achieve stable rotation speed and conveying speed.

[0036] The following is an example of the implementation method of the driving mechanism 6. See the appendix Figure 5A schematic diagram of the structure of a driving mechanism 6, including a motor (not shown), a first gear 61, a second gear 62, a third gear 63 and a fourth gear 64, wherein the second gear 62 and the third gear 63 are respectively sleeved at both ends of the first roller 2, and the fourth gear 64 is sleeved at one end of the third roller 3, the first gear 61 is engaged with the second gear 62, and the third gear 63 is engaged with the fourth gear 64. The first gear 61 is a driving wheel, driven by the motor, and the first gear 61 transmits power to the second gear 62, the second gear 62 drives the first roller 2 to rotate, the first roller 2 rotates to drive the third gear 63, the third gear 63 rotates to drive the fourth gear 64, thereby driving the third roller 3 to rotate.

[0037] Adjustment mechanism: It is arranged on the support 1 and is used to adjust the distance between the first roller 2 and the second roller 3 to adapt to the coated products of different thicknesses. The adjustment mechanism can be adjusted manually or automatically to achieve precise distance control.

[0038] The surface tangent line of the annular protrusion 4 on the first roller 2 is located on the same straight line. At the same time, the surface tangent line of the annular protrusion 4 on the second roller 3 is also located on the same straight line. The two straight lines are parallel to form a gap space for the film-coated product to pass through.

[0039] 2. Working Principle

[0040] After the film-coated product has been subjected to the hot-pressing film-coating treatment, it will move to the conveying mechanism. This design allows the film-coated product to only contact the annular protrusion 4 during the conveying process, while the annular groove 5 forms an air passage, which helps to reduce static adsorption. At the same time, the driving mechanism 6 drives the roller to rotate, thereby driving the film-coated product to be conveyed through the gap space.

[0041] 3. Implementation Effect

[0042] This embodiment effectively reduces the direct contact area between the coated product and the roller, reduces the electrostatic adsorption effect, and realizes the stable transmission of the coated product. Since the annular protrusion 4 on the first roller 2 and the annular protrusion 4 on the second roller 3 are designed with staggered distribution, their force directions are opposite, which plays a good force balance role, further reducing the deviation of the coated product to either side due to the electrostatic adsorption effect. At the same time, the transmission mechanism also has the advantages of simple structure, easy maintenance, strong adaptability, etc., and can be widely used in various coating production lines.

[0043] Example 2: Optimized conveying mechanism to prevent film adhesion

[0044] On the basis of Example 1, this example further improves the transmission mechanism by adding an electrostatic decoupling structure to more effectively solve the electrostatic adsorption problem and improve the overall performance of the transmission mechanism.

[0045] 1. Structural composition

[0046] Compared with Embodiment 1, in addition to being composed of a bracket 1, a first roller 2, a second roller 3, an annular protrusion 4, an annular groove 5, and a driving mechanism 6, this conveying mechanism also adds an electrostatic discharge structure (not shown in the figure) for discharging the static electricity on the bracket 1, the first roller 2, and the second roller 3. The specific structure of the conveying mechanism is still as Figures 1 to 3 shown.

[0047] One end of the electrostatic discharge structure is grounded, and the other end is conductively connected to the bracket 1;

[0048] The bracket 1 is made of a metal conductive material or a non-metal material with a conductive material coated on its surface;

[0049] The first roller 2 and the second roller 3 are also made of a metal conductive material or a non-metal material with a conductive material coated on its surface, and are designed such that static electricity can flow into the electrostatic discharge structure through the bracket 1.

[0050] 2. Working principle

[0051] When the film-coated product is subjected to hot-pressing film coating treatment, it will be conveyed to this conveying mechanism. The film-coated product only contacts the annular protrusions 4 on the first roller 2 and the second roller 3, while the annular grooves 5 form air channels, which helps to reduce static electricity adsorption. At the same time, the driving mechanism 6 drives the rollers to rotate, thereby driving the film-coated product to be conveyed through the gap space. During the conveying process, the electrostatic discharge structure discharges the static electricity that may exist on the first roller 2, the second roller 3, and the bracket 1 to further prevent the film-coated product from adhering to the rollers due to static electricity.

[0052] 3. Implementation effect

[0053] In this embodiment, by adding an electrostatic discharge structure, the problem of static electricity adsorption is more effectively solved, and the adhesion phenomenon of the film-coated product during the conveying process is further reduced. At the same time, this conveying mechanism also has the advantages of simple structure, easy maintenance, strong adaptability, etc., and can be widely applied to various film coating production lines. Compared with Embodiment 1, on the basis of maintaining the original advantages, the performance and stability of the conveying mechanism are further improved in this embodiment.

[0054] Embodiment 3: A film coating device

[0055] As Figure 6 shown, this embodiment elaborates in detail the specific implementation manner of a film coating device based on a specific rotation mechanism. The device aims to effectively reduce the problems of the film-coated product during the processing process and ensure the stable conveying and high-quality processing of the film-coated product.

[0056] 1. Structural composition

[0057] As Figure 6As shown in the figure, the film laminating device mainly consists of a feeding mechanism (not marked in the figure), a film laminating mechanism 7, a conveying mechanism 8, and a winding mechanism (not marked in the figure). The specific structure is as follows:

[0058] Feeding part structure: It is used to feed the raw materials to be film laminated into the device for subsequent processing. The feeding mechanism can be designed with an automatic adjustment mechanism, which can be adaptively adjusted according to the thickness and width of the raw materials to ensure the stability and accuracy of feeding.

[0059] Film laminating mechanism 7: It is the core part of the film laminating device and is used to thermally press the film material onto the raw materials. At the same time, the thermal pressing film lamination can be equipped with a temperature control system, which can adjust the temperature according to the characteristics of different materials to avoid the influence of overheating or overcooling on the film lamination quality.

[0060] Conveying mechanism 8: It is connected to the film laminating mechanism 7 and is used to convey the film laminated products after thermal pressing film lamination to the subsequent processing links. The conveying mechanism 8 adopts the conveying mechanism 8 of Embodiment 1 or Embodiment 2.

[0061] Winding mechanism: It is used to wind the processed film laminated products. The winding mechanism is arranged at the end of the conveying mechanism 8 and is connected to the conveying mechanism 8. This mechanism adopts transmission devices such as motors and speed reducers to achieve stable rotation speed and winding speed.

[0062] 2. Working principle

[0063] When the raw materials to be film laminated enter the feeding mechanism, the automatic adjustment mechanism will be adaptively adjusted according to the thickness and width of the raw materials to ensure the stability and accuracy of feeding. Subsequently, the raw materials enter the film laminating mechanism 7 for thermal pressing film lamination treatment. During the thermal pressing process, the temperature control system will adjust the temperature according to the characteristics of different materials to ensure the film lamination quality. The film laminated products after thermal pressing film lamination are conveyed to the conveying mechanism 8 for subsequent processing. During the conveying process, the annular protrusions 4 of the conveying mechanism 8 adopt a staggered distribution design to reduce the friction on the film laminated products and ensure their stability during the conveying process. Finally, the processed film laminated products enter the winding mechanism for winding. The winding mechanism realizes stable rotation speed and winding speed through transmission devices such as motors and speed reducers, and ensures consistent tension during the winding process through the tension control system.

[0064] 3. Implementation effects and advantages

[0065] The embodiment provides a specific implementation manner of a film laminating device based on a specific conveying mechanism 8. By optimizing the conveying mechanism 8 of the film laminating device, when the product after film laminating is conveyed to the winding or cutting mechanism, the film-laminated product will be adsorbed on the rear cover at the discharge port of the conveying mechanism 8 of the film laminating device due to electrostatic action, thus affecting the smooth discharge of the film, and further resulting in defects such as a decline in product quality and a reduction in production efficiency. Compared with the prior art, the structure of the present utility model is more concise, without the need to install a complex static elimination device, thereby reducing the equipment cost and maintenance complexity, and improving the production efficiency and product quality.

[0066] Specifically, in the film laminating device, the mechanism connected to the conveying mechanism is not limited to the winding mechanism, and is also applicable to any other post-processing mechanism, such as a cutting mechanism.

[0067] The above is the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A conveying mechanism for preventing film adhesion, characterized in that: It includes a bracket, a first roller shaft and a second roller shaft. The first roller shaft and the second roller shaft are installed on the bracket in parallel, and there is a gap space for the film-covered product to pass through between the first roller shaft and the second roller shaft; On the substrates of the first roller shaft and the second roller shaft, a number of annular protrusions are provided, and annular grooves are formed between adjacent annular protrusions. In particular, the annular protrusions on the first roller shaft correspond to the annular grooves on the second roller shaft one by one in position and are the same in number. Similarly, the annular protrusions on the second roller shaft also correspond to the annular grooves on the first roller shaft one by one in position and are the same in number.

2. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, The number of the annular protrusions on the first roller shaft is greater than or equal to 3.

3. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, All the annular protrusions on the first roller shaft and the second roller shaft have flat and smooth top surfaces.

4. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, The widths of the annular protrusions on the first roller shaft and the second roller shaft in the direction of the roller shaft rotation axis are the same, and the distances between adjacent annular protrusions are equal.

5. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, The widths of the annular protrusions on the first roller shaft are equal to the widths of the annular grooves at the relative positions on the second roller shaft; similarly, the widths of the annular protrusions on the second roller shaft are also equal to the widths of the annular grooves at the relative positions on the first roller shaft.

6. The conveying mechanism for preventing film adhesion according to claim 1, wherein For the annular protrusions on the first roller shaft, their surface tangents are all on the same straight line; similarly, for the annular protrusions on the second roller shaft, their surface tangents are also on the same straight line; The surface tangents between the annular protrusions on the first roller shaft and the surface tangents between the annular protrusions on the second roller shaft are parallel to each other, jointly forming a gap space for the film-covered product to pass through.

7. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, It further includes an annular groove, which is connected to the first roller shaft or the second roller shaft and is used to drive the first roller shaft or the second roller shaft to rotate, so as to drive the film-covered product to be conveyed through the gap space.

8. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, The bracket is also provided with an adjusting mechanism for adjusting the distance between the first roller shaft and the second roller shaft to adapt to film-covered products of different thicknesses.

9. The transfer mechanism for preventing film adhesion according to claim 1, characterized in that, The bracket is also provided with an electrostatic conduction structure.

10. A film laminating device, comprising a film laminating mechanism and a conveying mechanism. The film laminating mechanism is used to tightly bond the film and the substrate under the strong action of a hot pressing roller. The conveying mechanism is used to convey the product after film laminating to a winding or cutting mechanism for subsequent winding or cutting treatment, characterized in that, The conveying mechanism is the anti-film adhesion conveying mechanism according to any one of claims 1 to 9.

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