A hot stamping equipment for producing cigarette box packaging paper

Abstract

The present invention provides a hot stamping device for producing cigarette box packaging paper, comprising a pressure bearing seat and a hot stamping device arranged above the pressure bearing seat, the hot stamping device comprising a hot stamping plate assembly, and a lifting power mechanism capable of driving the hot stamping plate assembly to move up and down; the hot stamping plate assembly comprises a bottom plate, an elastic plate and a movable seat which are sequentially distributed from bottom to top; the bottom plate and the elastic plate both comprise a deformation section, a deformation chamber is formed between the deformation sections of the bottom plate and the elastic plate, the deformation section of the elastic plate has a tendency to drive the deformation section of the bottom plate to warp upward, the length of the deformation section of the bottom plate warping upward is in direct proportion to the volume of the deformation chamber, a plurality of first adsorption holes connected to the deformation chamber are provided on the deformation section of the bottom plate; the elastic plate is connected to a supporting mechanism, and the supporting mechanism can be extended or shortened in the horizontal direction. The present invention can effectively reduce the pulling force generated on the hot stamping pattern when peeling off the paper.

Description

Technical Field

[0001] The invention relates to the technical field of hot stamping, in particular to hot stamping equipment for producing cigarette box packaging paper. Background Art

[0002] Unique and beautiful printing and decoration effects are particularly important in cigarette packaging, which helps to attract customers' attention and enhance product value. As a unique printing process, hot stamping has received more and more attention. It is mainly divided into hot stamping and cold stamping. The hot stamping process uses hot-melt adhesive on the back of the hot stamping foil. During the hot stamping process, the hot-melt adhesive is melted by the temperature and pressure of the hot stamping plate, thereby realizing the transfer of the pattern on the hot stamping foil. The cold stamping process is to spray adhesive on the printing paper, and then press the hot stamping foil on the printing paper. After the adhesive hardens, the pattern on the hot stamping foil can be transferred to the printing paper. Compared with the hot stamping process, the cold stamping process does not require heating during the entire process, which is conducive to saving a lot of energy.

[0003] Cold stamping process includes cold rolling and cold flat stamping. Among them, cold flat stamping uses flat-plate equipment to press the cold stamping foil onto the printing paper by pressure, and then separates the hot stamping foil from the printing paper, that is, peeling the paper, and pulling away the base film paper of the cold stamping foil together with the untransferred part. However, most of the existing paper peeling methods adopt parallel peeling, that is, pulling the base film paper off the printing paper in a posture parallel to the printing paper. This method will generate a large pulling force on the hot stamping pattern, which can easily cause damage to the hot stamping pattern. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a hot stamping device for producing cigarette box packaging paper, which can effectively reduce the pulling force on the hot stamping pattern when peeling off the paper.

[0005] The present invention adopts the following technical solutions.

[0006] A hot stamping device for producing cigarette box packaging paper, comprising a pressure bearing seat and a hot stamping device arranged above the pressure bearing seat, wherein the hot stamping device comprises a hot stamping plate assembly and a lifting power mechanism capable of driving the hot stamping plate assembly to move up and down;

[0007] The hot stamping plate assembly includes a bottom plate, an elastic plate and a movable seat which are sequentially arranged from bottom to top;

[0008] The bottom plate and the elastic plate both include a deformation section, a deformation chamber is formed between the deformation sections of the bottom plate and the elastic plate, the deformation section of the elastic plate has a tendency to drive the deformation section of the bottom plate to warp upward, the warping length of the deformation section of the bottom plate is in direct proportion to the volume of the deformation chamber, and a plurality of first adsorption holes connected to the deformation chamber are provided on the deformation section of the bottom plate;

[0009] The elastic plate is connected to a supporting mechanism, which can be extended or shortened in the horizontal direction to change the length of the deformation section of the bottom plate and the elastic plate that overlaps with the supporting mechanism in the horizontal direction. The parts of the deformation section of the bottom plate and the elastic plate that overlap with the supporting mechanism in the horizontal direction are in a horizontal state, and the rest of the deformation section of the bottom plate and the elastic plate are in an upward state.

[0010] Furthermore, an elastic pad is provided at the bottom end of the deformation section of the elastic plate.

[0011] Furthermore, the bottom plate and the elastic plate both include a receiving section, the receiving sections of the bottom plate and the elastic plate are connected to the movable seat as a whole, and a ventilation channel is opened between the receiving sections of the bottom plate and the elastic plate.

[0012] Furthermore, an elastic sleeve is connected between the edge of the deformation section of the bottom plate and the edge of the deformation section of the elastic plate, and the deformation chamber is located inside the elastic sleeve.

[0013] Further, the support mechanism includes a horizontally arranged air cushion, the air cushion is located between the elastic plate and the movable seat, the air cushion is connected to an air inlet valve and an exhaust valve, the air inlet valve is connected to an air pump, and the air volume of the air cushion is proportional to the length of the air cushion;

[0014] One end of the air cushion is provided with an extrusion block which is slidably connected with the moving seat in the horizontal direction. The extrusion block is connected with an elastic member which makes the extrusion block tend to move in the direction of reducing the length of the air cushion.

[0015] Furthermore, a horizontally extending guide rail is provided on the side wall of the movable seat, and a guide block slidably connected to the guide rail is provided on the extrusion block.

[0016] Furthermore, the exhaust valve is connected to an air knife extending in a horizontal direction and spanning the pressure bearing seat, and the air knife is connected to the extrusion block through a connecting arm to form a whole.

[0017] Furthermore, a plurality of second adsorption holes are provided at the top of the pressure bearing seat, the second adsorption holes are connected to a negative pressure channel, and the negative pressure channel is connected to an air suction pump.

[0018] Furthermore, the lifting power mechanism includes a mounting seat and a push rod disposed on the mounting seat and extending vertically. A vertically extending guide rod is disposed at the top of the movable seat, and a guide hole slidably connected to the guide rod is opened on the mounting seat.

[0019] The beneficial effects of the present invention are:

[0020] During the hot stamping process, the base film of the hot stamping foil is close to the bottom of the bottom plate, and the printing paper is close to the top of the pressure seat. First, the support mechanism is in the maximum extension state. At this time, the deformation sections of the bottom plate and the elastic plate all overlap with the support mechanism in the horizontal direction, and both are in a horizontal state. Then, the lifting power mechanism drives the bottom plate to press down, so that the pattern on the hot stamping foil is transferred to the printing paper.

[0021] After the adhesive between the pattern and the printing paper hardens, the support mechanism changes from the maximum elongation state to the maximum contraction state. Under the action of the elastic plate, the part of the deformation section of the bottom plate and the elastic plate that does not overlap with the support mechanism will rise. Since the length of the upturned part of the deformation section of the bottom plate is directly proportional to the volume of the deformation chamber. As the deformation section of the bottom plate and the elastic plate rises, negative pressure is formed in the deformation chamber. Under the action of atmospheric pressure, the first adsorption hole of the upturned part of the deformation section of the bottom plate will adsorb the base film paper of the hot stamping foil, so that the base film paper will rise with this part of the deformation section of the bottom plate, thereby tearing the base film paper that is tightly attached to the upturned part of the deformation section of the bottom plate from the printing paper.

[0022] As the support mechanism continues to transform toward the maximum contraction state, the length of the deformation sections of the bottom plate and the elastic plate that do not overlap with the support mechanism gradually increases, thereby continuously tearing the base film paper off the printing paper along the contraction direction of the support mechanism. Compared with the parallel paper peeling method, the pulling force on the hot stamping pattern when peeling off the paper is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is one of the cross-sectional structural schematic diagrams of this embodiment;

[0025] Figure 2 for Figure 1 A magnified view of part A;

[0026] Figure 3 for Figure 1 A magnified view of part B;

[0027] Figure 4 This is the second schematic cross-sectional view of the present embodiment;

[0028] Figure 5 for Figure 4 Enlarged view of part C;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of this embodiment (partial structure is omitted).

[0030] Description of reference numerals:

[0031] Pressure seat 1,

[0032] The second adsorption hole 11, the negative pressure channel 12,

[0033] Hot stamping plate assembly 21,

[0034] Bottom plate 211, elastic plate 212, moving seat 213, elastic pad 214, elastic sleeve 215,

[0035] Deformation chamber 21a, air permeable channel 21b,

[0036] Deformation section 201, receiving section 202,

[0037] The first adsorption hole 2111,

[0038] Lifting power mechanism 22,

[0039] Mounting seat 221, push rod 222, guide rod 223, guide hole 2211,

[0040] Support mechanism 23,

[0041] Air cushion 231, air inlet valve 232, exhaust valve 233, extrusion block 234, elastic member 235, guide rail 236, guide block 237,

[0042] Wind knife 31, connecting arm 32,

[0043] Base film paper 41, printing paper 42. DETAILED DESCRIPTION

[0044] The drawings are only used for illustrative purposes and should not be construed as limitations of this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product.

[0045] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present invention is further described below in conjunction with the drawings and embodiments.

[0046] As attached Figures 1 to 6 The hot stamping equipment for producing cigarette box packaging paper shown in the figure comprises a pressure bearing seat 1 and a hot stamping device arranged above the pressure bearing seat 1, wherein the hot stamping device comprises a hot stamping plate assembly 21 and a lifting power mechanism 22 capable of driving the hot stamping plate assembly 21 to move up and down;

[0047] The hot stamping plate assembly 21 includes a bottom plate 211, an elastic plate 212 and a moving seat 213 which are arranged in sequence from bottom to top;

[0048] The bottom plate 211 and the elastic plate 212 both include a deformation section 201. A deformation chamber 21a is formed between the deformation sections 201 of the bottom plate 211 and the elastic plate 212. The deformation section 201 of the elastic plate 212 has a tendency to drive the deformation section 201 of the bottom plate 211 to warp upward. The warping length of the deformation section 201 of the bottom plate 211 is proportional to the volume of the deformation chamber 21a. The deformation section 201 of the bottom plate 211 is provided with a plurality of first adsorption holes 2111 communicating with the deformation chamber 21a.

[0049] The elastic plate 212 is connected to a supporting mechanism 23, which can be extended or shortened in the horizontal direction to change the length of the deformation section 201 of the bottom plate 211 and the elastic plate 212 that overlaps with the supporting mechanism 23 in the horizontal direction. The portion of the deformation section 201 of the bottom plate 211 and the elastic plate 212 that overlaps with the supporting mechanism 23 in the horizontal direction is in a horizontal state, and the rest of the deformation section 201 of the bottom plate 211 and the elastic plate 212 is in an upward state.

[0050] During the hot stamping process, the base film paper 41 of the hot stamping foil is closely attached to the bottom end of the bottom plate 211, and the printing paper 42 is closely attached to the top end of the pressure bearing seat 1. Figure 1 As shown, first, the support mechanism 23 is in the maximum extension state, at which time the deformation sections 201 of the bottom plate 211 and the elastic plate 212 all overlap with the support mechanism 23 in the horizontal direction, and both are in a horizontal state. Then, the lifting power mechanism 22 drives the bottom plate 211 to press down, so that the pattern on the hot stamping foil is transferred to the printing paper 42.

[0051] As attached Figure 4 As shown, after the adhesive between the pattern and the printing paper 42 hardens, the support mechanism 23 changes from the maximum elongation state to the maximum contraction state. Under the action of the elastic plate 212, the part of the deformation section 201 of the bottom plate 211 and the elastic plate 212 that does not overlap with the support mechanism 23 will be warped. Since the length of the warped part of the deformation section 201 of the bottom plate 211 is in direct proportion to the volume of the deformation chamber 21a. As the deformation section 201 of the bottom plate and the elastic plate 212 warps, negative pressure is formed in the deformation chamber 21a. Under the action of atmospheric pressure, the first adsorption hole 2111 of the warped part of the deformation section 201 of the bottom plate 211 will adsorb the base film paper 41 of the gold foil, so that the base film paper 41 follows this part of the deformation section 201 of the bottom plate 211 to warp up, thereby tearing the base film paper 41 that is tightly attached to the warped part of the deformation section 201 of the bottom plate 211 off the printing paper 42.

[0052] As the support mechanism 23 continues to transform toward the maximum contraction state, the length of the deformation section 201 of the bottom plate 211 and the elastic plate 212 that does not overlap with the support mechanism 23 gradually increases, thereby continuously tearing the base film paper 41 off the printing paper 42 along the contraction direction of the support mechanism 23. Compared with the parallel peeling method, the pulling force on the hot stamping pattern when peeling off the paper is effectively reduced.

[0053] Preferably, an elastic pad 214 is provided at the bottom end of the deformation section 201 of the elastic plate 212. It is understood that when the deformation sections 201 of the bottom plate 211 and the elastic plate 212 are both in a horizontal state, the top of the bottom plate 211 is close to the bottom end of the elastic plate 212. At this time, the elastic pad 214 can not only prevent the bottom plate 211 from having a hard collision with the elastic plate 212, but also fill the deformation chamber 21a, so that the volume of the deformation chamber 21a is close to zero. In this way, when the deformation sections 201 of the bottom plate 211 and the elastic plate 212 are partially warped, the deformation chamber 21a can be close to vacuum, so that the first adsorption hole 2111 of the warped part of the deformation section 201 of the bottom plate 211 can firmly adsorb the base film paper 41 of the gold foil.

[0054] Preferably, the bottom plate 211 and the elastic plate 212 both include a receiving section 202 , and the receiving sections 202 of the bottom plate 211 and the elastic plate 212 are connected to the movable seat 213 as a whole, and a ventilation channel 21b is provided between the receiving sections 202 of the bottom plate 211 and the elastic plate 212 .

[0055] It can be understood that when the base film paper 41 is not completely torn off from the printing paper 42, the deformation sections 201 of the bottom plate 211 and the elastic plate 212 are partially in a horizontal state, and the horizontal deformation sections 201 of the bottom plate 211 and the elastic plate 212 are tightly attached, so that the first adsorption hole 2111 of the upturned part of the deformation section 201 of the bottom plate 211 is not connected to the air permeable channel 21b, and the first adsorption hole 2111 of the upturned part of the deformation section 201 of the bottom plate 211 firmly adsorbs the base film paper 41, so that the base film paper 41 cannot slide on the bottom plate 211.

[0056] When the base film paper 41 is completely torn off from the printing paper 42, the deformation section 201 of the bottom plate 211 and the elastic plate 212 is completely warped up, the first adsorption hole 2111 of the deformation section 201 of the bottom plate 211 is connected to the air permeable channel 21b, and the negative pressure is lost in the deformation chamber 21a. At this time, the base film paper 41 can slide on the bottom plate 211, thereby realizing the feeding of the hot stamping foil for the next hot stamping.

[0057] Preferably, an elastic sleeve 215 is connected between the edge of the deformation section 201 of the bottom plate 211 and the edge of the deformation section 201 of the elastic plate 212, and the deformation chamber 21a is located in the elastic sleeve 215. As an example, the elastic sleeve 215 is made of rubber.

[0058] Preferably, the support mechanism 23 includes a horizontally arranged air cushion 231, the air cushion 231 is located between the elastic plate 212 and the movable seat 213, the air cushion 231 is connected to an air inlet valve 232 and an air outlet valve 233, the air inlet valve 232 is connected to an air pump, and the air volume of the air cushion 231 is proportional to the length of the air cushion 231;

[0059] One end of the air cushion 231 is provided with an extrusion block 234 slidably connected to the moving seat 213 along the horizontal direction. The extrusion block 234 is connected to an elastic member 235 , which makes the extrusion block 234 tend to move in the direction of reducing the length of the air cushion 231 .

[0060] It can be understood that, in the process of the support mechanism 23 changing from the maximum contraction state to the maximum extension state, the air inlet valve 232 is opened, the exhaust valve 233 is closed, and the air pump injects air into the air cushion 231, and the air cushion 231 is extended. Under the support of the air cushion 231, the deformation section 201 of the bottom plate 211 and the elastic plate 212 that overlap with the air cushion 231 is in a horizontal state. At the same time, the air cushion 231 drives the extrusion block 234 to move in the direction of increasing the length of the air cushion 231, and the elastic member 235 stores elastic potential energy. In addition, in the process of transferring the pattern, the movable seat 213 acts on the bottom plate 211 through the air cushion 231, which helps to make the pressure uniform everywhere on the bottom plate 211, thereby helping to improve the quality of hot stamping.

[0061] After the adhesive between the pattern and the printing paper 42 hardens, the air pump stops, the air inlet valve 232 is closed, the exhaust valve 233 is opened, and the elastic member 235 causes the extrusion block 234 to move in the direction of reducing the length of the air cushion 231, thereby allowing the air in the air cushion 231 to flow away through the exhaust valve 233. The length of the air cushion 231 is reduced, and the deformation section 201 of the elastic plate 212 and the bottom plate 211, which have lost the support of the air cushion 231, rises again.

[0062] It is understood that the air pump, the air inlet valve 232 and the air outlet valve 233 may be manually controlled by an operator, or automatically controlled by a computer.

[0063] As an example, the elastic member 235 is a constant force spring.

[0064] Preferably, a horizontally extending guide rail 236 is provided on the side wall of the movable seat 213 , and a guide block 237 slidably connected to the guide rail 236 is provided on the extrusion block 234 .

[0065] Preferably, the exhaust valve 233 is connected to a wind knife 31 extending in the horizontal direction and spanning the pressure-bearing seat 1 , and the wind knife 31 is connected to the extrusion block 234 as a whole through a connecting arm 32 .

[0066] The wind knife 31 is facing the connection between the base film paper 41 and the printing paper 42. When the extrusion block 234 moves in the direction of reducing the length of the air cushion 231, the wind knife 31 moves with the extrusion seat, and the air in the air cushion 231 is blown toward the connection between the base film paper 41 and the printing paper 42 through the wind knife 31. When the airflow generated by the wind knife 31 reaches the connection between the base film paper 41 and the printing paper 42, an impact force is generated, which is conducive to the separation of the base film paper 41 and the printing paper 42. In addition, when the airflow passes through the printing paper 42, it is also conducive to hardening the adhesive on the printing paper 42.

[0067] In order to improve the separation efficiency of the base film paper 41 and the printing paper 42, preferably, a plurality of second adsorption holes 11 are opened at the top of the pressure bearing seat 1, and the second adsorption holes 11 are connected to a negative pressure channel 12, and the negative pressure channel 12 is connected to an air suction pump. In the process of peeling off the paper, the air suction pump is started to generate negative pressure in the second adsorption holes 11, so that the printing paper 42 is firmly adsorbed on the top of the pressure bearing seat 1.

[0068] Preferably, the lifting power mechanism 22 includes a mounting seat 221, and a push rod 222 disposed on the mounting seat 221 and extending vertically, a guide rod 223 extending vertically is disposed at the top of the moving seat 213, and a guide hole 2211 is provided on the mounting seat 221 for sliding connection with the guide rod 223. As an example, the push rod 222 is an electric push rod.

[0069] It should be noted that the air pump and the air suction pump mentioned in this embodiment are well known to technicians in various fields, so no further description is given in this specification.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A hot stamping device for producing cigarette box packaging paper, comprising a pressure bearing seat and a hot stamping device arranged above the pressure bearing seat, characterized in that: The hot stamping device includes a hot stamping plate assembly and a lifting power mechanism capable of driving the hot stamping plate assembly to move up and down; The hot stamping plate assembly includes a bottom plate, an elastic plate and a movable seat which are sequentially arranged from bottom to top; The bottom plate and the elastic plate both include a deformation section, a deformation chamber is formed between the deformation sections of the bottom plate and the elastic plate, the deformation section of the elastic plate has a tendency to drive the deformation section of the bottom plate to warp upward, the warping length of the deformation section of the bottom plate is in direct proportion to the volume of the deformation chamber, and a plurality of first adsorption holes connected to the deformation chamber are provided on the deformation section of the bottom plate; The elastic plate is connected to a support mechanism, and the support mechanism can be extended or shortened in the horizontal direction to change the length of the support mechanism overlapping with the bottom plate and the deformed section of the elastic plate in the horizontal direction. The parts of the bottom plate and the deformed section of the elastic plate overlapping with the support mechanism in the horizontal direction are in a horizontal state, and the rest of the deformed section of the bottom plate and the elastic plate are in an upward state. During the hot stamping process, first, the supporting mechanism is in the maximum elongation state. At this time, the deformation sections of the bottom plate and the elastic plate all overlap with the supporting mechanism in the horizontal direction, and both are in a horizontal state; then, the lifting power mechanism drives the bottom plate downward, thereby transferring the pattern on the hot stamping foil to the printing paper; after the adhesive between the pattern and the printing paper hardens, the supporting mechanism changes from the maximum elongation state to the maximum contraction state.

2. The hot stamping equipment for producing cigarette box packaging paper according to claim 1, characterized in that: An elastic pad is provided at the bottom end of the deformation section of the elastic plate.

3. The hot stamping equipment for producing cigarette box packaging paper according to claim 1, characterized in that: The bottom plate and the elastic plate both include a receiving section, the receiving sections of the bottom plate and the elastic plate are connected to the movable seat as a whole, and a ventilation channel is provided between the receiving sections of the bottom plate and the elastic plate.

4. The hot stamping equipment for producing cigarette box packaging paper according to claim 1, characterized in that: An elastic sleeve is connected between the edge of the deformation section of the bottom plate and the edge of the deformation section of the elastic plate, and the deformation chamber is located in the elastic sleeve.

5. The hot stamping equipment for producing cigarette box packaging paper according to claim 1, characterized in that: The support mechanism includes a horizontally arranged air cushion, the air cushion is located between the elastic plate and the movable seat, the air cushion is connected to an air inlet valve and an air outlet valve, the air inlet valve is connected to an air pump, and the air filling amount of the air cushion is in direct proportion to the length of the air cushion; One end of the air cushion is provided with an extrusion block which is slidably connected with the moving seat in the horizontal direction. The extrusion block is connected with an elastic member which makes the extrusion block tend to move in the direction of reducing the length of the air cushion.

6. The hot stamping equipment for producing cigarette box packaging paper according to claim 5, characterized in that: A horizontally extending guide rail is provided on the side wall of the movable seat, and a guide block slidably connected to the guide rail is provided on the extrusion block.

7. The hot stamping equipment for producing cigarette box packaging paper according to claim 5, characterized in that: The exhaust valve is connected with an air knife extending in the horizontal direction and spanning the pressure bearing seat, and the air knife is connected to the extrusion block through a connecting arm to form a whole.

8. The hot stamping equipment for producing cigarette box packaging paper according to claim 1, characterized in that: A plurality of second adsorption holes are provided at the top of the pressure bearing seat, the second adsorption holes are connected to a negative pressure channel, and the negative pressure channel is connected to an air suction pump.

9. The hot stamping equipment for producing cigarette box packaging paper according to claim 1, characterized in that: The lifting power mechanism comprises a mounting seat and a push rod which is arranged on the mounting seat and extends vertically. A guide rod which extends vertically is arranged on the top of the moving seat. A guide hole which is slidably connected with the guide rod is opened on the mounting seat.

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