CN110549413A - Decorative strip production method - Google Patents
Decorative strip production method Download PDFInfo
- Publication number
- CN110549413A CN110549413A CN201910622106.8A CN201910622106A CN110549413A CN 110549413 A CN110549413 A CN 110549413A CN 201910622106 A CN201910622106 A CN 201910622106A CN 110549413 A CN110549413 A CN 110549413A
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- strip
- decorative strip
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- cutting
- shaped
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000005520 cutting process Methods 0.000 claims abstract description 155
- 238000004804 winding Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 230000001154 acute effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000004080 punching Methods 0.000 description 17
- 238000010008 shearing Methods 0.000 description 15
- 230000002146 bilateral effect Effects 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 11
- 238000005034 decoration Methods 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 5
- 210000001624 hip Anatomy 0.000 description 4
- 238000003856 thermoforming Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
Abstract
The invention discloses a decorative strip production method, which comprises the first step of cutting a decorative sheet wound on a roll shaft at a longitudinal cutting station, and the second step of inputting a strip-shaped decorative strip into a transverse cutting station, wherein an isosceles triangle part of the strip-shaped decorative strip is cut at the transverse cutting station. The production method of the decorative strip overcomes the prejudice of the prior art, and the originally abandoned isosceles triangle part is reserved, so that the structure of the decorative strip is optimized, the operation not only simplifies the production process of the decorative strip, improves the material utilization rate and reduces the generation of waste materials, but also promotes the prefabricated cup using the decorative strip to have better cup body strength.
Description
Technical Field
The invention relates to a production method of a decorative strip, in particular to a production method of a decorative strip on a prefabricated cup.
Background
The prefabricated cup obtained by heating and shaping the plastic sheet is a cup shape with an integrated structure and is provided with a cup body structure and a cup edge structure, wherein the cup edge is positioned at the upper part of the cup body and protrudes out of the periphery of the cup body, and the outer contour of the cup edge has the shape which is the same as that of the cross section of the cup body and also has the shape difference with that of the cross section of the cup body; the design purpose of the cup rim is to realize the carrying and packaging in the continuous conveying, sealing after filling and selling stages in the forming process, the design purpose of the cup body is to accommodate materials, the main display part of the cup-shaped design and the main display part of the packaging design, and therefore the overall appearance of the prefabricated cup is mainly restricted by the cup body structure. The cup body of the common prefabricated cup has a cylindrical structure, an inverted round table-shaped structure, a rectangular parallelepiped structure with round corners and a spherical structure. In order to be matched with the prefabricated cup for sale, a decorative strip is usually arranged on the cup body of the prefabricated cup, the decorative strip surrounds the cup body for a circle, and product information, enterprise information and other designs which are beneficial to improving the appearance significance of the product are printed on the surface of the decorative strip. The structure formed by integrally curling the decorative strip is completely matched with the surface structure of the cup body, only the decorative strip can be attached to the cup body, and the decorative strip can display information and express the appearance characteristics of the cup body.
The used decorative strip is curled into an inverted round table shape, namely the upper part of the curled decorative strip is wide and the lower part of the curled decorative strip is narrow. The decorative strip is in a fan-ring-shaped structure after being spread and unfolded, the decorative strip is provided with two circular arc-shaped edges and two straight edges, the two straight edges are positioned at the end part of the decorative strip, and one end of the decorative strip is connected with the other end after being curled, so that the two straight edges are tightly connected together.
in the prior art, the manufacture and processing of the decorative strip which is curled into an inverted round table-shaped structure needs to be subjected to strip cutting, trimming and section cutting. Firstly, cutting a sheet with a larger width into a continuous sheet with a smaller width; then cutting the edge of the continuous sheet with smaller width to form an inward-concave arc edge, an outward-convex arc edge and a short straight edge, thus forming the continuous sheet to be cut, wherein the fan-shaped part and the isosceles triangle part are alternately arranged; and finally, cutting the isosceles triangle part to obtain the fan-shaped decorative strip from the continuous sheet to be cut, and discharging the cut triangular part as waste. It is clear that the amount of scrap should be the same as the amount of trim strips, and that the utilization of the material from which the trim strips are produced is low.
the decorative strip obtained by cutting is pushed into a label feeding die of the label rolling mechanism under the clamping and driving of the roller, and a storage cavity for storing the decorative strip is arranged in the label feeding die. The decorative strip can only move by being clamped and pushed by the roller after being cut. In order to ensure that the decorative strip can completely enter the storage cavity, the roller is arranged on the label feeding die, and the cutter for cutting the isosceles triangle part is also arranged on the label feeding die; and the roller and the cutter are close to the storage cavity, so that the tail end of the obtained decorative strip can enter the storage cavity under the pushing action of the cutter. This results in a very complex supply structure for the decorative strip.
Although the decorative strip is curled inside the marking die, and the outer side of the decorative strip is limited by the marking die, the central line direction of the storage cavity is not limited, the curling state of the decorative strip is uncontrollable, and the curling states are not necessarily the same.
and after the mark feeding die is fully loaded with the decorative strip, the mark feeding die moves to the position above the forming die, the push rod extends into the storage cavity, and one end of the push rod is in contact with the decorative strip in a curling state and pushes the decorative strip to move towards the position of the forming die. Until the trim strip is pushed into the mold cavity of the forming mold and the trim strip is pressed to fit within the mold cavity. Because the inner cavity of the decorative strip is tightly attached to the inner wall of the label feeding mold, the decorative strip is very thin, accidents can occur when the push rod pushes the decorative strip, and the accidents comprise that the edge of the decorative strip is stressed and deformed to be embedded into a gap between the push rod and the label feeding mold, the part of the decorative strip is not in a reasonable posture after being curled, and is extruded and deformed by the push rod, and the printed information on the surface of the decorative strip is abraded. The controllability of the curling supply process of the decorative strip is low, the curling success rate of the decorative strip is not high enough, and the production process of the prefabricated cup is influenced finally.
The shaping mould carrying the decorative strip is placed at a preform cup shaping station by extruding the heated plastic sheet and then forming the preform cup while the decorative strip is bonded to the preform cup. A decorative strip is provided on the preformed cup. The decorative strip is curled on the cup body, two ends of the decorative strip are connected together, and the straight edge of one end of the decorative strip is next to the straight edge of the other end of the decorative strip. The thickness of the cup body and the decoration strip is the same.
Due to the specific thermal forming process of the prefabricated cup, the wall thickness of the cup edge of the prefabricated cup is determined to be larger than that of the cup body. Although the decorative strip is arranged on the cup body, the thickness of the whole prefabricated cup at the cup body can be increased by the decorative strip, but the pressure applied to the cup body by a thumb when a user holds the cup body in the operation of opening the prefabricated cup cannot be resisted, and a small amount of deformation exists in most cases. The use experience brought by the defect of inconvenient use of the product for the consumer can weaken the overall image of the product in the impression of the consumer, and is very unfavorable for the long-term operation of enterprises.
Disclosure of Invention
The invention aims to solve the technical problem of how to improve the utilization rate of a decorative sheet, thereby obtaining a decorative strip production method.
In order to solve the technical problems, the invention adopts the following technical scheme: :
The first step, cutting the decorative sheet wound on the roll shaft at a longitudinal cutting station to obtain a strip-shaped decorative strip formed by alternately arranging a fan-shaped part and an isosceles triangle part, wherein the straight edge of the fan-shaped part is connected with the waist of the isosceles triangle part, the length of the straight edge of the fan-shaped part is equal to the length of the waist of the isosceles triangle part, and the bottom edge of the isosceles triangle part is parallel to the conveying direction of the strip-shaped decorative strip,
And secondly, inputting the long-strip-shaped decorative strip into a transverse cutting station, cutting off the isosceles triangle part of the long-strip-shaped decorative strip at the transverse cutting station, cutting the long-strip-shaped decorative strip by equal length to form the single-section decorative strip integrally in an arch structure, wherein the decorative strip comprises a body and two connecting parts, the body is in a fan-shaped shape, the straight edge of one end of the body and the straight edge of the other end of the body are in mirror symmetry relative to the central line of the body, one of the connecting parts is positioned on the straight edge of one end of the body, and the other connecting part is positioned on the straight.
it is clear that the isosceles triangle portion in the present solution is eventually transformed into the connecting portion of the decorative strip, which is completely different from the prior art in which the isosceles triangle portion is cut and discarded. In order to fully combine the connecting part with the body, the structures of the connecting part and the body are designed in a relevant manner, particularly, the straight edge at one end of the body and the straight edge at the other end of the body are in mirror symmetry relative to the central line of the body, the edge of the connecting part is positioned between the tangent line of the arc edge of the convex side of the body at the end where the straight edge of the body is positioned and the tangent line of the arc edge of the concave side of the body at the end where the straight edge of the body is positioned, when the decorative strip is rolled into a circular truncated cone shape, one of the connecting parts can be covered, and then the structural strength of the cup body is enhanced at the. The technical scheme has the advantages that the isosceles triangle part is reserved, and meanwhile, the technical effect of improving the strength of the cup body is achieved for the use process of the decorative strip.
When the connecting parts are in the shape of an oblique triangle, the best mode is that one of the connecting parts is in the shape of an acute triangle, and the other connecting part is in the shape of an obtuse triangle. The structure is convenient to produce, has high material utilization rate and can reduce waste.
After the decorative strip is installed on the cup body, the connecting part which can be in an obtuse triangle shape is positioned outside, and correspondingly, the connecting part which is in an acute triangle shape is positioned in front of the connecting part which is in an obtuse triangle shape in the conveying direction of the decorative strip; the connecting portion of the acute-angled triangle may be located outside, and the corresponding connecting portion of the obtuse-angled triangle may be located in front of the connecting portion of the acute-angled triangle in the conveyance direction of the trim strip. This may provide a different visual experience after the decorative strip is applied and placed on the cup body. The scheme has the advantages that the two sides with smaller side lengths of the connecting part form a plurality of contour styles at the two ends of the decorative strip, and the design space for increasing the appearance significance of the prefabricated cup using the decorative strip by utilizing the contour is large, so that the display form of the decorative strip on the prefabricated cup is rich.
Preferably, the cutting position on the isosceles triangle part of the elongated trim strip is located at the position of the high line of the isosceles triangle part, and the connecting part is in the shape of a right triangle. The altitude is in the vertical direction, this and the general motion trajectory of rectangular ornamental strip are all in the state of being perpendicular, and the cutting edge of the equipment of cutting rectangular ornamental strip among the prior art is mostly straight form, and these equipment can be competent in the task of cutting rectangular ornamental strip, so this scheme can utilize present ripe equipment to produce well, therefore implements very conveniently, and the implementation cost is low.
In order to match the use requirements of the adsorption type label rolling mechanism, the length difference between any two strip-shaped decorative strips at the longitudinal cutting station and the transverse cutting station is integral multiple of the length of the single independent decorative strip which is integrally in an arch structure. This makes it possible to supply the decorative strip on a large scale.
The strip-shaped decorative strip is obtained by die cutting from the decorative sheet wound on the roller. The cutting operation direction obtained by the mode is wider than that of the hobbing cutter cutting mode, the die cutting mode and the decorative sheet are cooperated through the step motion of the decorative sheet, and the step motion is just consistent with the work rhythm of other equipment for processing the strip-shaped decorative strip, so all the equipment in the technical scheme has good compatibility, and special debugging operation is not needed. A plurality of decorative strips can be formed through a die cutting mode, and the edges of the decorative strips can be cut.
The invention adopts the technical scheme that: the production method of the decorative strip overcomes the prejudice of the prior art, and the originally abandoned isosceles triangle part is reserved, so that the structure of the decorative strip is optimized, the operation not only simplifies the production process of the decorative strip, improves the material utilization rate and reduces the generation of waste materials, but also promotes the prefabricated cup using the decorative strip to have better cup body strength.
Drawings
The invention is further described with reference to the following figures and detailed description.
Fig. 1 is a schematic structural view of a cutting device required for carrying out a method for producing decorative strips according to the invention;
Fig. 2 is a perspective view of an upper die plate required for implementing a decorative strip production method of the present invention;
Fig. 3 is a front view of an upper die plate required for carrying out a method for producing a decorative strip according to the invention;
Fig. 4 is a perspective view of a lower template required for implementing the decorative strip production method of the present invention;
Fig. 5 is an assembly schematic view of an upper template and a lower template required for implementing the decorative strip production method of the invention;
Fig. 6 is a schematic view of the use of a cutting device required for the implementation of a method for producing decorative strips according to the invention;
fig. 7 is a schematic structural view of a long strip-shaped decorative strip produced by a cutting device required for implementing the decorative strip production method of the invention;
FIG. 8 is a schematic view of the use of an absorption type label rolling mechanism required for implementing the decoration strip production method of the present invention;
Fig. 9 is a schematic view of the use of the decorative strip on a prefabricated cup, which is obtained by the decorative strip production method of the invention.
Detailed Description
the production of the prefabricated cup comprises the steps of producing the decorative strip, supplying the decorative strip and thermoforming the prefabricated cup, wherein the decorative strip is directly supplied to the thermoforming link of the prefabricated cup.
The production raw material of the decorative strip is a decorative sheet with a large width wound on a roll shaft, the decorative sheet is cut into a plurality of strip-shaped decorative strips, and the number of the strip-shaped decorative strips is even in order to match the technical requirements of the prefabricated cup thermoforming.
As shown in fig. 1, 2, 3, 4, 5, the cutting operation is performed at a longitudinal cutting station. The cutting device for cutting is arranged in a longitudinal cutting station and comprises an upper template 1, a lower template 2, a driving assembly 3 and a frame. Four guide posts which are parallel to each other are arranged on the rack, the guide posts penetrate through the upper template 1, and the upper template 1 and the guide posts can be movably connected in a sliding mode. The lower template 2 is fixed on the frame; the driving assembly 3 is provided with a linear cylinder, a cylinder body of the linear cylinder is fixed on the rack, a piston rod of the linear cylinder is connected with the upper template 1, the driving assembly 3 drives the upper template 1 to do linear reciprocating motion along the guide pillar, and the lower template 2 is located on a path of the linear reciprocating motion of the upper template 1.
The upper template 1 is provided with punching and shearing cutters which are positioned on one side of the upper template 1 and face the position of the lower template 2. The lower template 2 is provided with a punching and shearing through hole 4 which is consistent with the outline of the punching and shearing cutter, and when the punching and shearing cutter is inserted into the punching and shearing through hole 4, a shearing process is formed between the punching and shearing through hole and the punching and shearing through hole 4, so that the decorative sheet can be subjected to die cutting operation.
The punching and shearing tool comprises a single-side cutting tool 5, a double-side cutting tool I6 and a double-side cutting tool II 7. The length of the unilateral cutting tool 5 and the length of the bilateral cutting tool II 7 are both larger than the length of the bilateral cutting tool I6.
The upper template 1 is provided with two unilateral cutting tools 5, the bilateral cutting tool II 7 is located in the middle of the two unilateral cutting tools 5, and the distance from the bilateral cutting tool II 7 to any unilateral cutting tool 5 is the same. The double-side cutting tools I6 are distributed between the double-side cutting tool II 7 and the single-side cutting tool 5 in an equidistant arrangement mode, and the distance between the single-side cutting tool 5 and the double-side cutting tool I6, the distance between adjacent double-side cutting tools I6 and the distance between the double-side cutting tool I6 and the double-side cutting tool II 7 are the same; the two unilateral cutting tools 5 are in mirror symmetry relative to the central line of the bilateral cutting tool II 7; the two-side cutting tool I6 located on one side of the two-side cutting tool II 7 and the two-side cutting tool I6 located on the other side of the two-side cutting tool II 7 are in mirror symmetry relative to the central line located on the two-side cutting tool II 7, and the number of the two-side cutting tool I6 located on one side of the two-side cutting tool II 7 is equal to the number of the two-side cutting tool I6 located on the other side of the two-side cutting tool II 7.
And space areas which are punching shear forming channels 8 are formed between the single-side cutting tool 5 and the double-side cutting tool I6, between the adjacent double-side cutting tools I6 and between the double-side cutting tool I6 and the double-side cutting tool II 7.
One side of unilateral cutter 5 is equipped with indent limit cutting edge, and one side that both sides cut cutter I6 is equipped with indent limit cutting edge, and the opposite side that both sides cut cutter I6 is equipped with outer chimb cutting edge, and both sides that both sides cut cutter II 7 all are equipped with outer chimb cutting edge. The structure of the inner concave edge cutting blade of the single-side cutting tool 5 is the same as that of the inner concave edge cutting blade of the double-side cutting tool I6, and the structure of the outer convex edge cutting blade of the double-side cutting tool I6 is the same as that of the outer convex edge cutting blade of the double-side cutting tool II 7; the concave edge cutting blade of the unilateral cutting tool 5 is adjacent to the outer convex edge cutting blade of the bilateral cutting tool I6, the concave edge cutting blade of the bilateral cutting tool I6 is adjacent to the outer convex edge cutting blade of the bilateral cutting tool II 7, and the concave edge cutting blade of one bilateral cutting tool I6 of the adjacent bilateral cutting tools I6 is adjacent to the outer convex edge cutting blade of the other bilateral cutting tool I6. Therefore, both the concave edge cutting blade and the convex edge cutting blade are distributed on both sides of the punch forming passage 8. The concave edge cutting knife edge comprises an arc-shaped knife edge I9 and a linear knife edge I10, and one end of the arc-shaped knife edge I9 is connected with one end of the linear knife edge I10; the outer convex edge cutting knife edge comprises an arc-shaped knife edge II 11 and a linear knife edge II 12, and one end of the arc-shaped knife edge II 11 is connected with one end of the linear knife edge II 12. The straight line cutting edge I10 between arbitrary indent limit cutting edge and the adjacent outer flange cutting edge is inclined to the centre of a circle of straight line cutting edge II 12, arc cutting edge I9 and the centre of a circle coincidence of arc cutting edge II 11, and the radian of arc cutting edge I9 is greater than the radian of arc cutting edge II 11.
The upper template 1 is provided with a prepressing plate 13. The prepressing plate 13 is movably mounted on the upper die plate 1 in a sliding manner, and the prepressing plate 13 is located around the punching and shearing tool. A guide post and a reset spring are arranged between the prepressing plate 13 and the upper template 1, one end of the guide post is fixedly connected with the prepressing plate 13, the other end of the guide post penetrates through the upper template 1 and is provided with a nut, the upper template 1 is in sliding connection with the guide post, the reset spring is sleeved on the guide post, one end of the reset spring is connected with the prepressing plate 13, the other end of the reset spring is connected with the upper template 1, the reset spring is in a compressed state after installation, the central line of the guide post is parallel to the linear reciprocating direction of the upper template 1, and therefore the sliding motion direction of the prepressing plate 13 relative to the upper template 1 is parallel to the linear reciprocating direction of.
In the initial state, the punching and shearing cutter of the cutting device is far away from the lower template 2. Before cutting, firstly, a section of decorative sheet extends out in the conveying direction, the decorative sheet extends into a position between the punching shear cutter and the lower template 2 in a horizontal posture, and the decorative sheet is placed on the lower template 2; when cutting is started, the punching and shearing tool moves to the position of the decorative sheet, the prepressing plate 13 is in contact with the decorative sheet before the punching and shearing tool, and the prepressing plate 13 tightly presses the decorative sheet on the lower template 2; when cutting, the punching shear cutter compresses the decorative sheet, and the part of the decorative sheet, which is tightly contacted with the cutting edge of the inner concave edge and the cutting edge of the outer convex edge, is subjected to the shearing force; after cutting, the decorative sheet is formed with a profile corresponding to the concave edge cutting blade and the convex edge cutting blade, and the waste material obtained by cutting is discharged from the punching shear forming passage 8. Then, the cutting device is returned to the initial state, and the sheet to be decorated is fed out in the same direction for a distance corresponding to the length of the die-cutting forming passage 8, and the decorative sheet is cut and divided into a plurality of elongated decorative strips by repeating the above-described cutting operation, as shown in fig. 6.
As shown in fig. 7, the strip-shaped decorative strip is provided with fan-shaped portions 14 and isosceles triangle portions 15, the fan-shaped portions 14 and the isosceles triangle portions 15 are alternately arranged, the straight edges of the fan-shaped portions 14 are connected with the waists of the isosceles triangle portions 15, and the length of the straight edges of the fan-shaped portions 14 is equal to the length of the waists of the isosceles triangle portions 15. The base of the isosceles triangle portion 15 is parallel to the conveying direction of the strip-shaped decorative strip.
And in the decoration strip supplying stage, the long strip decoration strips pass through the winding alignment station and then are input into the transverse cutting station.
A winding alignment member is provided at the winding alignment station, and a winding reel is provided in the winding alignment member, and the winding reel is arranged to form a transport path for transporting the decorative strip, for example, a method for supplying the decorative strip and a winding alignment member described in the die cutting member, which are disclosed in chinese patent No. CN106625863A published 5/10/2017, are known as a method for supplying the decorative strip and a winding alignment member suitable for the method. The strip-shaped decorative strips enter the winding alignment component after being turned into a vertical posture, the number of the strip-shaped decorative strips is even, and the turning direction of one half of the strip-shaped decorative strips is opposite to that of the other half of the strip-shaped decorative strips. The overturning operation can ensure that the printed information on the surface of the decorative strip can be exposed out of the surface of the cup body.
The strip-shaped decorative strip enters a transverse cutting station after passing through a winding alignment station, a transverse cutting device is arranged on the transverse cutting station, and the transverse cutting device can adopt the technical scheme that the patent name of Chinese patent 2016, 1, 20 and with the publication number of CN105253685A is called as a label cutting device, so that a cutting edge is positioned in a vertical plane. After the decoration strip is input into the transverse cutting device, the isosceles triangle part 15 of the strip-shaped decoration strip is cut off by the transverse cutting device, and the cutting position is just positioned at the position of the high line of the isosceles triangle part 15. The strip-shaped decorative strips are cut in equal length to form single-section decorative strips which are integrally in an arch structure; the long-strip decorative strip makes stepping movement, and the length of the decorative strip entering the transverse cutting device every time is equal to the length of the single-section decorative strip which is integrally in an arch structure and also equal to the length of the punching and shearing forming channel 8. Due to the coordination function of the winding alignment part, the length difference between the longitudinal cutting station and the transverse cutting station of any two strip-shaped decorative strips is integral multiple of the length of a single independent section of the decorative strip which is integrally in an arch structure, and some decorative strips have the same length and some decorative strips have different lengths.
As shown in fig. 8, the single-segment decorative strip with an overall arched structure comprises a body 16 and two connecting portions 17, wherein the body 16 is in a fan-ring shape, and the connecting portions 17 are in a right-angled triangle shape; when the right-angle sides of the two connecting parts 17 are butted, an isosceles triangle can be formed. The straight edge of one end of the body 16 and the straight edge of the other end of the body 16 are in mirror symmetry relative to the center line of the body 16, the oblique edge of the connecting part 17 is connected with the straight edge of one end of the body 16, and the length of the oblique edge of the connecting part 17 is equal to that of the straight edge of one end of the body 16; the connecting portion 17 at one end of the body 16 and the connecting portion 17 at the other end of the body 16 are mirror images with respect to the center line of the body 16. The extending direction of one right-angle side of one of the connecting parts 17 is parallel to the extending direction of one right-angle side of the other connecting part 17, and the extending direction of the other right-angle side of one of the connecting parts 17 is overlapped with the extending direction of the other right-angle side of the other connecting part 17. The center of the arc edge of the side of the body 16 that protrudes outward coincides with the center of the arc edge of the side of the body 16 that is recessed inward, and the radian of the arc edge of the side of the body 16 that protrudes outward is less than the radian of the arc edge of the side of the body 16 that is recessed inward. The arc edge of the side of the body 16 which is convex outwards is obtained by processing the convex edge cutting blade in the cutting device, and the arc edge of the side of the body 16 which is concave inwards and the bottom edge of the connecting part 17 are obtained by processing the concave edge cutting blade in the cutting device. As shown in fig. 8, the edge of the connecting portion 17 is located between the tangent line of the end of the arc edge of the side of the body 16 protruding outward at the straight edge of the body 16 and the tangent line of the arc edge of the side of the body 16 protruding inward at the straight edge of the body 16 at the end. The right-angle side of the connecting part 17 at one end of the body 16 is parallel to the right-angle side of the connecting part 17 at the other end of the body 16, and the lengths of the right-angle side and the right-angle side are the same, so that the outline of the edge of one end of the decorative strip in the width direction is the same as the outline of the edge of the other end of the decorative strip in the width direction.
The single-section decoration strip integrally in an arch structure is obtained by cutting, and is input into an adsorption type label rolling mechanism, the adsorption type label rolling mechanism can adopt the technical scheme that the patent name with the publication number of CN105151446A, which is published in 12, 16 and 12 months in 2015 of Chinese patent, is an adsorption type label rolling mechanism, and the mold cavity of a forming mold is set to be in a circular truncated cone shape. When the decorative strip enters the adsorption type label rolling mechanism, the cylindrical label rolling mold core 18 absorbs the decorative strip and rolls up the decorative strip, so that the decorative strip is rolled around the side surface of the label rolling mold core 18 to form one end of the body 16 and the connecting part 17 of the end to be covered on the other end of the body 16, and one end of the body 16 is covered on the connecting part 17 of the other end of the body 16, namely, one end of the decorative strip is covered on the other end of the decorative strip. Then, the label rolling die core 18 stops rotating and the negative pressure disappears, the pushing component 19 in the absorption label rolling mechanism pushes the curled decorative strip into the die cavity of the forming die, the curled decorative strip positioned in the die cavity is extruded and unfolded to form a circular truncated cone shape, one end of the body 16 covers the connecting part 17 at the other end of the body 16, the connecting part 17 at one end of the body 16 covers the other end of the body 16, and the straight edge at one end of the body 16 is connected with the straight edge at the other end of the body 16, namely the two straight edges are overlapped in the direction vertical to the central line of the die cavity.
The forming die is placed at the thermoforming site and the plastic sheet is extruded within the forming die to ultimately form the preform cup. The prefabricated cup is provided with a cup edge, a cup body and a decorative strip, wherein the cup edge and the cup body are of an integrated structure, the cup body is of an inverted round platform-shaped structure, the cup edge is positioned at the end with the largest width of the cup body and protrudes out of the surface of the cup body, the cup edge is of an overall annular structure and is provided with a film raising protrusion which has a larger width and extends in the radial direction, and the decorative strip is arranged on the cup body in a curling state; one end of the body 16 of the decoration strip covers the connecting part 17 at the other end of the body 16 and is connected with the connecting part 17 at one end of the body 16, the connecting part 17 at one end of the body 16 covers the other end of the body 16 and is connected with the other end of the body 16 and is curled into an inverted circular truncated cone shape, and the straight edge at one end of the body 16 is connected with the straight edge at the other end of the body 16, namely the two straight edges are overlapped in the direction. As shown in fig. 9, one of the connecting portions 17 is hidden by the body 16, and the other connecting portion 17 is located outside the body 16, so that the two right-angled sides of the exposed connecting portion 17 on the surface of the body 16 can be seen on the surface of the prefabricated cup. The two straight edges of the body 16 are positioned on the cup body at a position offset from the side of the cup body where the film-raising protrusion is located.
the two straight edges of the body 16 and the film forming protrusions can also be located on the same side of the cup body, thereby forming another embodiment.
In addition to the above embodiments, the cutting edge of the transverse cutting device is inclined, and the cut penetrates through the vertex angle of the isosceles triangle portion 15 during cutting, so as to obtain the decorative strip with one connecting portion 17 in an acute triangle shape and the other connecting portion 17 in an obtuse triangle shape. After the decorative strip is installed on the cup body, the connecting part 17 which can be in an acute triangle shape 17 is positioned at the outer part, and the connecting part 17 which can be in an obtuse triangle shape is positioned at the outer part, so that another embodiment is obtained.
Claims (7)
1. A production method of a decorative strip is characterized in that:
firstly, cutting a decorative sheet wound on a roll shaft at a longitudinal cutting station to obtain a strip-shaped decorative strip formed by alternately arranging a fan-shaped part (14) and an isosceles triangle part (15), wherein the straight edge of the fan-shaped part (14) is connected with the waist of the isosceles triangle part (15), the length of the straight edge of the fan-shaped part (14) is equal to the length of the waist of the isosceles triangle part (15), and the bottom edge of the isosceles triangle part (15) is parallel to the conveying direction of the strip-shaped decorative strip,
And secondly, inputting the long-strip-shaped decorative strip into a transverse cutting station, cutting off an isosceles triangle part (15) of the long-strip-shaped decorative strip at the transverse cutting station, cutting the long-strip-shaped decorative strip into equal lengths to form the single-section decorative strip integrally in an arch structure, wherein the decorative strip comprises a body (16) and two connecting parts (17), the body (16) is in a fan-ring shape, the straight edge of one end of the body (16) and the straight edge of the other end of the body (16) are in mirror symmetry relative to the central line of the body (16), one connecting part (17) is positioned on the straight edge of one end of the body (16), and the other connecting part (17) is positioned on the straight edge of the other end of the body.
2. The method for producing a decorative strip of claim 1, wherein: one of the connecting parts (17) is in the shape of an acute triangle, and the other connecting part (17) is in the shape of an obtuse triangle.
3. The method of producing the decorative strip of claim 2, wherein: the connecting portion (17) having an acute triangle shape is located in front of the connecting portion (17) having an obtuse triangle shape in the conveyance direction of the trim.
4. the method of producing the decorative strip of claim 2, wherein: the connecting portion (17) having the obtuse triangle shape is positioned in front of the connecting portion (17) having the acute triangle shape in the conveyance direction of the trim.
5. The method for producing a decorative strip of claim 1, wherein: the cutting position on the isosceles triangle part (15) of the strip-shaped decorative strip is located at the position of the high line of the isosceles triangle part (15), and the connecting parts (17) are all in a right-angled triangle shape.
6. The method for producing a decorative strip of claim 1, wherein: the long-strip-shaped decorative strips pass through the winding alignment station and then are input into the transverse truncation cutting station, and the length difference between the longitudinal cutting station and the transverse truncation cutting station of any two long-strip-shaped decorative strips is integral multiple of the length of the single independent decorative strip which is integrally in an arch structure.
7. The method for producing a decorative strip of claim 1, wherein: the strip-shaped decorative strip is obtained by die cutting from the decorative sheet wound on the roller.
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| CN201910622106.8A CN110549413A (en) | 2019-07-10 | 2019-07-10 | Decorative strip production method |
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| CN201910622106.8A CN110549413A (en) | 2019-07-10 | 2019-07-10 | Decorative strip production method |
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| CN110549413A true CN110549413A (en) | 2019-12-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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