An auxiliary foil threading device, its usage method, and a hot stamping machine including the same

Abstract

The present invention discloses an auxiliary foil threading device, which includes a mandrel and a roller. The roller is sleeved on the mandrel in a freely rotatable manner, and a cloth support is connected to the roller. The present invention discloses a method for using the auxiliary foil threading device: the cloth support is automatically driven by the operation of the tooth row through the hot stamping unit, and the aluminum foil is driven to pass through the hot stamping unit by rotating the roller to recover the cloth support. The present invention discloses a hot stamping machine including the aforementioned auxiliary foil threading device. The auxiliary foil threading device is clamped on the installation bracket reserved at the front end of the hot stamping unit of the hot stamping machine through the positioning end faces at both ends of the mandrel. The auxiliary foil threading device of the present invention can reduce the number of personnel for foil threading operations, reduce the labor intensity of foil threading work, avoid the risk of personnel scalding, and improve production efficiency.

Description

Technical Field

[0001] The present invention belongs to the field of printing technology, and more specifically, relates to an auxiliary foil threading device, its usage method, and a hot stamping machine. Background Art

[0002] The foil threading methods of hot stamping machines are mainly divided into two types: manual foil threading and full-automatic foil threading. Basically, all hot stamping machine products on the market use the manual foil threading method; it is understood that Jishi once launched a hot stamping machine with full-automatic foil threading, but it is only used on special machines, with a high price and cannot be loaded on general-purpose hot stamping equipment on the market.

[0003] During the hot stamping production process of a hot stamping machine, the aluminum foil to be hot stamped is wound into a roll in a continuous, film-like strip form and placed in the foil feeding unit of the hot stamping part of the machine. Before starting the hot stamping work, the operator needs to thread the gold foil through the inside of the machine according to the unique hot stamping circuit of the machine (as Figure 1 shown, Patent 201410084199.0 has such a structure). The threading path of the foil should pass through the foil feeding unit, the hot stamping unit, the top of the machine, and finally be discharged to the outside of the machine through the waste discharge channel. During this period, the aluminum foil should run smoothly without breaking.

[0004] As Figure 2 shown, the steps of the current manual foil threading process are as follows: 1. At Station A, the operator sends out a continuous strip of aluminum foil of appropriate length from the rolled aluminum foil, folds it and reversely inserts it into the outlet of the hot stamping unit;

[0005] 2. At Station B, the operator repeatedly hooks and pushes the aluminum foil through the hot stamping unit to reach Position C with a special aluminum foil threading hook;

[0006] 3. The operator moves to Station C and pulls the aluminum foil passing through the hot stamping unit onto the top of the machine;

[0007] 4. The operator moves to Station D, winds the aluminum foil through mechanisms such as the foil passing rod and the foil pressing rubber wheel at the top of the machine, and finally discharges it from the machine through the waste foil channel at Point E.

[0008] During the entire foil threading process, the aluminum foil channel of the hot stamping unit is extremely narrow (the maximum height is about 100 mm, the depth is 1300 mm, and the length is 935 mm). There is also a row of tooth guides blocking the front, which greatly increases the operation difficulty of personnel at Station B. Moreover, the aluminum foil is a thin film strip, and it is prone to breakage when excessive force is applied. Especially when multiple aluminum foils need to be hot stamped simultaneously for a product, when the operator uses an aluminum foil threading hook to thread the foil at Area B, multiple operations such as hooking and picking are required. Due to limited operating space, blocked vision, etc., the operation is extremely inconvenient, with a high labor intensity, and it is easy to perform repetitive work due to aluminum foil breakage. It should be particularly noted that due to reasons such as replacing the foil roll, broken foil, and replacing the product, when it is necessary to stop the machine during production to re-thread the foil, there is a risk of scalding during the operation at Station B because the machine has already been heated at this time, and the temperature of the hot stamping unit exceeds 100 °C, while the operation at Station B has to be carried out close to the heating area for a series of operations, with a relatively high risk.

[0009] Patent 200520047967.1 discloses an automatic aluminum foil guiding device for an automatic die-cutting and hot stamping machine. The structure of this patented device is complex, and its installation is also inconvenient, which is not conducive to popularization and use. Summary of the Invention

[0010] In order to solve the above problems, the present invention provides an auxiliary foil threading device and its usage method, aiming to: reduce the foil threading operation of personnel, lower the labor intensity of the foil threading work, avoid the risk of personnel scalding, and improve production efficiency.

[0011] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0012] An embodiment of the present invention provides an auxiliary foil threading device, wherein the foil threading device includes a mandrel and a drum. The drum is sleeved on the mandrel in a freely rotatable manner, and a cloth support is connected to the drum. One end of the cloth support is connected to the surface of the drum, and the cloth support wraps around the drum in a coaxial form. When the drum rotates, the mandrel does not rotate.

[0013] According to the auxiliary foil threading device provided by the above embodiment of the present invention, two bearings or bushings are sleeved on the mandrel, and a freely rotatable drum is sleeved on the bearings or bushings.

[0014] According to the auxiliary foil threading device provided by the above embodiment of the present invention, positioning end faces are provided at both ends of the mandrel, and the positioning end faces are provided on the side walls at both ends of the mandrel.

[0015] According to the auxiliary foil threading device provided by the above embodiment of the present invention, the two positioning end faces are symmetric about the center of the mandrel.

[0016] The auxiliary foil threading device provided according to one of the above embodiments of the present invention, wherein the auxiliary foil threading device is clamped on the mounting bracket reserved at the front end of the hot stamping unit of the hot stamping machine through the positioning end faces at both ends of the mandrel.

[0017] The auxiliary foil threading device provided according to one of the above embodiments of the present invention, wherein the cloth support is fixed on the surface of the roller by gluing.

[0018] The present invention also provides a method for using the auxiliary foil threading device, wherein the method for using the auxiliary foil threading device includes the following steps:

[0019] Step 1: Hang the auxiliary foil threading device on the mounting bracket reserved at the front end of the hot stamping unit, and the cloth support naturally unfolds and droops under the action of gravity;

[0020] Step 2: Start the hot stamping machine, and the gripper bar moves along the gripper bar guide rail through the hot stamping unit towards the foil feeding unit, driving the cloth support to pass through the hot stamping unit and enter the foil feeding unit;

[0021] Step 3: Feed out an appropriate length of aluminum foil from the rolled aluminum foil and paste it on the cloth support;

[0022] Step 4: Rotate the roller, and the aluminum foil pasted on the cloth support will smoothly pass through the hot stamping channel along with the recovered cloth support;

[0023] Step 5: Remove the auxiliary foil threading device to complete foil threading.

[0024] The present invention further provides a hot stamping machine including the aforementioned auxiliary foil threading device, wherein the auxiliary foil threading device is clamped on the mounting bracket reserved at the front end of the hot stamping unit of the hot stamping machine through the positioning end faces at both ends of the mandrel.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1) By using the auxiliary foil threading device of the present invention, the cloth support is automatically driven by the operation of the gripper bar through the hot stamping unit, and the aluminum foil is driven to pass through the hot stamping unit by rotating the roller to recover the cloth support, reducing the operation difficulty and indirectly improving the production efficiency. 2) Since the heating plate, hot stamping plate, etc. in the hot stamping unit need to be heated to a temperature above 100 °C during operation, by using the auxiliary foil threading device of the present invention, the contact probability with the high-temperature area is greatly reduced, and the risk of scalding is reduced. 3) The structure of the present invention is simple, which can upgrade the existing manual operation to a semi-automatic device, with low manufacturing cost and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Referring to the accompanying drawings, the disclosure of the present invention will become more understandable. It is easy for those skilled in the art to understand that: these drawings are only used to illustrate the technical solutions of the present invention by way of example, and are not intended to limit the protection scope of the present invention. In the figures:

[0027] Figure 1 is a structural diagram of an existing hot stamping machine.

[0028] Figure 2 It is a structural diagram of the working stations of an existing hot stamping machine.

[0029] Figure 3 It is a schematic structural diagram of an auxiliary foil threading device according to an embodiment of the present invention.

[0030] Label and name

[0031] 1 Foil feeding unit 2 Hot stamping unit 3 Auxiliary foil threading device 4 Dental row 5 Aluminum foil 6 Foil threading path 7 Dental row track 31 Mandrel 32 Bearing 33 Roller 34 Support cloth 35 Positioning end face Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Figure 3 It is a schematic structural diagram of an auxiliary foil threading device according to an embodiment of the present invention. As Figure 3 shown, the auxiliary foil threading device 3 according to an embodiment of the present invention includes a mandrel 31, a bearing 32, and a roller 33. The bearing 32 is sleeved on the mandrel 31, the roller 33 is sleeved on the bearing 32, one end of a cloth support 34 is fixedly connected to the roller 33. One end of the cloth support 34 can be fixed to the roller 33 by gluing. The cloth support 34 is wrapped around the surface of the roller 33 in multiple layers and is coaxially arranged with the roller 33. Positioning end faces 35 are provided at both ends of the mandrel 31. The positioning end faces 35 are provided on the side walls at both ends of the mandrel 31, and the two positioning end faces 35 are centrosymmetric about the center of the mandrel 31.

[0035] For the auxiliary foil threading device 3 according to the above embodiment of the present invention, the auxiliary foil threading device 3 is clamped on the mounting bracket reserved at the front end of the hot stamping unit 2 of the hot stamping machine through the positioning end faces 35 at both ends of the mandrel 31.

[0036] The auxiliary foil threading device 3 according to one of the above embodiments of the present invention, wherein when the drum 33 rotates, the mandrel 31 does not rotate, that is, when the drum 33 rotates, the mandrel 31 is fixed.

[0037] The auxiliary foil threading device 3 according to one of the above embodiments of the present invention, wherein the cloth support 34 is fixed on the surface of the drum 33 by gluing.

[0038] Figure 1 It is a structural diagram of an existing hot stamping machine. Figure 2 It is a structural diagram of an existing hot stamping machine station. As Figures 1-2 shown, the auxiliary foil threading device 3 according to one of the above embodiments of the present invention, wherein when in use, the device of the present invention is suspended on the installation bracket reserved at the front end of the hot stamping unit 2, and the cloth support 34 naturally unfolds and hangs down under the action of gravity; subsequently, the hot stamping machine is started, and when the gripper bar 4 moves from the hot stamping unit 2 to the foil feeding unit 1 along the gripper bar guide rail (the specific path is as Figure 1 shown by the gripper bar trajectory 7), it will drive the cloth support to pass through the hot stamping unit 2 and enter the foil feeding unit 1; the operator is at station A, and pastes an appropriately long aluminum foil sent from the rolled aluminum foil 5 onto the cloth support 34; the operator directly goes to area D, rotates the drum 33, and the aluminum foil 5 pasted on the cloth support 34 will smoothly pass through the hot stamping channel following the recovered cloth support 34, specifically referring to Figure 1 the foil threading path 6 shown; the auxiliary foil threading device 3 is removed, and the subsequent foil threading work in areas D and E is completed, and the foil threading is completed.

[0039] According to another embodiment of the present invention, a hot stamping machine includes the above-mentioned auxiliary foil threading device 3, that is, the auxiliary foil threading device 3 of the present application can be used on a hot stamping machine.

[0040] The auxiliary foil threading device 3 according to one of the above embodiments of the present invention is integrally installed on the installation bracket reserved at the front end of the hot stamping unit 2. In order to prevent the mandrel 31 from rotating together with the drum 33, positioning end faces 35 are provided at both ends of the mandrel 31 of the present invention. The positioning end faces 35 are provided on the side walls at both ends of the mandrel 31, and the two positioning end faces 35 are centrosymmetric about the center of the mandrel 31. The positioning end faces 35 are stuck on the reserved installation bracket, so that when the drum 33 rotates, the mandrel 31 is fixed and does not rotate, thereby enabling the cloth support to move continuously and smoothly.

[0041] In order to make the rotation of the drum 33 smoother, a bearing 32 is also sleeved on the mandrel 31 of the auxiliary foil threading device 3 according to one of the above embodiments of the present invention, and the drum 33 is sleeved on the bearing 32. In this way, the rotation resistance of the drum 33 is smaller through the bearing 32, and thus it is smoother.

[0042] According to the auxiliary foil threading device 3 of one of the above embodiments of the present invention, one end of a cloth support 34 is fixedly connected to the roller 33, and the cloth support 34 can be fixed on the surface of the roller 33 by gluing. The operation of the cloth support 34 is driven by the operation of the tooth row 4 through the hot stamping unit 2 and is automatically completed. The aluminum foil 5 is driven to pass through the hot stamping unit 2 by rotating the roller 33 to recover the cloth support 34, reducing the operation difficulty.

[0043] As Figure 1 , Figure 2 , Figure 3 shown, the method for using the auxiliary foil threading device provided by one of the above embodiments of the present invention includes the following steps:

[0044] Step 1: Hang the device of the present invention on the installation bracket reserved at the front end of the hot stamping unit 2, and the cloth support 34 naturally unfolds and hangs down under the action of gravity;

[0045] Step 2: Start the hot stamping machine, and the tooth row 4 moves along the tooth row guide rail through the hot stamping unit 2 to the foil feeding unit 1, driving the cloth support 34 to pass through the hot stamping unit 2 and enter the foil feeding unit 1;

[0046] Step 3: Feed out a suitable length of aluminum foil 5 from the rolled aluminum foil 5 and paste it on the cloth support 34;

[0047] Step 4: Rotate the roller 33, and the aluminum foil 5 pasted on the cloth support 34 will smoothly pass through the hot stamping channel following the recovered cloth support 34;

[0048] Step 5: Remove the auxiliary foil threading device 3 to complete the foil threading.

[0049] The present invention also provides a hot stamping machine including the aforementioned auxiliary foil threading device. The auxiliary foil threading device 3 is clamped on the installation bracket reserved at the front end of the hot stamping unit of the hot stamping machine through the positioning end faces 35 at both ends of the mandrel 31.

[0050] Compared with the prior art, the present invention has the following beneficial effects: 1) By using the auxiliary foil threading device of the present invention, the operation of the cloth support is driven by the operation of the tooth row through the hot stamping unit and is automatically completed. The aluminum foil is driven to pass through the hot stamping unit by rotating the roller to recover the cloth support, reducing the operation difficulty and indirectly improving the production efficiency. 2) Since the heating plate, hot stamping plate, etc. in the hot stamping unit need to be heated to a temperature above 100 °C during operation, by using the auxiliary foil threading device of the present invention, the contact probability with the high-temperature area is greatly reduced, and the risk of scalding is reduced. 3) The structure of the present invention is simple, which can upgrade the existing manual operation to a semi-automatic device, with low manufacturing cost and convenient installation.

[0051] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0052] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for using an auxiliary foil threading device, the auxiliary foil threading device comprising a mandrel (31) and a roller (33), the roller (33) being sleeved on the mandrel (31) in a freely rotatable manner, a cloth support (34) being connected to the roller (33), one end of the cloth support (34) being connected to the surface of the roller (33) and the cloth support (34) being wrapped around the roller (33) in a coaxial form, the mandrel (31) not rotating when the roller (33) rotates, characterized in that, The method for using the auxiliary foil threading device comprises the following steps: Step 1: Hang the auxiliary foil threading device (3) on the mounting bracket reserved at the front end of the hot stamping unit (2), and the cloth support (34) naturally unfolds and hangs down under the action of gravity; Step 2: Start the hot stamping machine, and the gripper bar (4) moves along the gripper bar guide rail through the hot stamping unit (2) towards the foil feeding unit (1), driving the cloth support (34) to pass through the hot stamping unit (2) and enter the foil feeding unit (1); Step 3: Feed out an appropriate length of aluminum foil (5) from the rolled aluminum foil (5) and paste it on the cloth support (34); Step 4: Rotate the roller (33), and the aluminum foil (5) pasted on the cloth support (34) will smoothly pass through the hot stamping channel following the recovered cloth support (34); Step 5: Remove the auxiliary foil threading device (3) to complete foil threading.

2. The usage method of an auxiliary foil threading device according to claim 1, wherein: Two bearings (32) or bushings are sleeved on the mandrel (31), and a freely rotatable roller (33) is sleeved on the bearings (32) or bushings.

3. The usage method of an auxiliary foil threading device according to claim 2, characterized in that: Positioning end faces (35) are provided at both ends of the mandrel (31), and the positioning end faces (35) are provided on the side walls at both ends of the mandrel (31).

4. The usage method of an auxiliary foil threading device according to claim 3, characterized in that: The two positioning end faces (35) are centrosymmetric about the center of the mandrel (31).

5. The usage method of an auxiliary foil threading device according to claim 3, characterized in that: The auxiliary foil threading device (3) is clamped on the mounting bracket reserved at the front end of the hot stamping unit of the hot stamping machine through the positioning end faces (35) at both ends of the mandrel (31).

6. The usage method of an auxiliary foil threading device according to claim 1, wherein: The cloth support (34) is fixed on the surface of the roller (33) by gluing.

7. A gilding machine, the gilding machine comprising an auxiliary foil threading device (3), the auxiliary foil threading device comprising a mandrel (31) and a roller (33), the roller (33) being sleeved on the mandrel (31) in a freely rotatable manner, a cloth support (34) being connected to the roller (33), one end of the cloth support (34) being connected to the surface of the roller (33) and the cloth support (34) being wrapped around the roller (33) in a coaxial form, the mandrel (31) not rotating when the roller (33) rotates, characterized in that, The method for using the auxiliary foil threading device (3) is the method as described in any one of claims 1-6.

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