Production process and production line of crown cap with top pull ring

Abstract

The invention provides a production process and a production line of a crown cap with a top pull ring. The production process comprises the steps of flattening, slicing, sheet stock printing and gum application, stamping, molding, finished product packaging and the like. When the sheet stock is printed, on the sheet stock, the plane outlines of the crown cap bodies are at least sequentially arranged into two staggered rows, and the outlines of the pull ring belts and the pull ring bodies are oppositely arranged. In the slicing process, the coiled material is cut into sheet materials in a wave cutting mode, so that the edges of the sheet materials are in a wave shape and coincide with the edge lines of the crown cap body plane contour, the pull ring belt and the pull ring body contour which are printed later. And during stamping, the front edge of the next sheet material and the rear edge of the previous sheet material are fed in a matched mode through an automatic feeding machine. A flat plate machine, a slicing machine, a printing machine, a gum application machine, a punching machine, a molding machine and a finished product packaging machine are sequentially arranged on each station on the production line. According to the invention, the coiled material is subjected to wave cutting to form the sheet material in a wave cutting manner, and the sheet material can be continuously fed into a punching machine to complete continuous punching during punching, so that the production efficiency of the crown cap is improved.

Description

Technical Field

[0001] The invention relates to the field of crown cap production, in particular to a production process and a production line of a crown cap with a top pull ring. Background Art

[0002] The crown cap is a kind of bottle cap, which is named because it has a corrugated short skirt and looks like a crown. At present, most beverages, especially beer bottles, are sealed with crown caps. When sealing, the crown cap is set to match the bottle mouth thread. The bottle mouth of the bottle body is a threaded bottle mouth. The crown cap covered on the bottle mouth is threaded and spun by a thread spinning machine. Since a rubber pad matching the bottle mouth thread is also provided inside the crown cap, the sealing effect is good. When opening, a bottle opener is used to pry upward on the skirt of the crown cap. Due to the effect of the rubber pad, it is easy to open under the effect of the bottle opener lever. However, since the corrugated short skirt of the crown cap itself is not suitable for being pried upward by hand, a bottle opener is required when opening the bottle, which brings inconvenience to the user. For this reason, people set a pull ring at the bottom of the crown cap. When opening the bottle cap, the bottle cap can be easily opened by pulling the pull ring upward. This crown cap with a pull ring is easy to open and soon used in the sealing of beer and other beverage bottles, and has gained a good reputation among users.

[0003] At present, a crown cap with a pull ring on the top is formed integrally with the cap body, and when stored, the pull ring is folded on the top of the cap body, which does not affect the transportation and storage of bottled beverages. However, the crown cap with a pull ring on the top has a complicated production process due to the addition of a molded pull ring during production.

[0004] At present, crown caps are mainly made of coils, but coils cannot be printed on both sides. Therefore, the production process mainly includes: flattening the coils (flat plate), slitting from sheets (cut materials), printing and gluing, stamping, molding and finished product packaging. Correspondingly, the production line of crown caps with top pull rings is arranged in sequence with flat plate machines, slicers, printers, gluing machines, stamping machines, molding machines and finished product packaging machines. The coils pass through each station on the production line and finally become finished product packaging. However, the stamping machine in the current crown cap production line cannot complete continuous stamping, resulting in slow production speed and failure to meet production requirements. Summary of the invention

[0005] The purpose of the invention is to provide a production process and a production line for crown caps with top pull rings in view of the fact that crown caps with top pull rings cannot be punched continuously during the production process, resulting in a slow production speed and failure to meet user requirements. The production process can enable a punching machine to punch continuously.

[0006] The technical solution adopted by the present invention to achieve its technical purpose is: a production process of a crown cap with a top pull ring, which adopts coil production, including flat plate, slicing, sheet printing and back glue, stamping, molding, and finished product packaging steps.

[0007] When printing the sheet material, the plane contours of the crown cap body and the pull ring are printed, the plane contours of the crown cap body and the pull ring body are both circular, and the radius of the pull ring body contour is half of the plane contour of the crown cap body, the pull ring body contour and the crown cap body plane contour are connected by a pull ring belt, and the extension lines of the center line of the pull ring belt at both ends intersect the pull ring body contour and the center of the crown cap body plane contour respectively; on the sheet material, the crown cap body plane contours are arranged in at least two staggered rows in sequence, and the pull ring belt and the pull ring body contour are arranged relatively.

[0008] During slicing, the coil is cut into sheets by wave cutting so that the edges of the sheets form a corrugated shape, which coincides with the edge lines of the crown cap body plane contour, the pull ring band, and the pull ring body contour printed later.

[0009] During stamping, an automatic feeder is used to align the leading edge of the rear sheet with the trailing edge of the front sheet for feeding.

[0010] Furthermore, in the production process of the crown cap with top pull ring, when printing the sheet material, the outer plane contours of the cover bodies of the two crown caps that are offset are arranged in a mirror image on the sheet material.

[0011] Furthermore, in the production process of the crown cap with a top pull ring, when the sheet is printed, both sides of the sheet are printed simultaneously.

[0012] Furthermore, in the production process of the crown cap with top pull ring, the sheet printing and the sheet back gluing are carried out simultaneously, with one side being printed and the other side being back gluing.

[0013] Furthermore, in the above-mentioned production process of the crown cap with a top pull ring: after the slicing step, it also includes a step of stacking and cutting the sheets formed by wave cutting, in which step, the sheets are neatly stacked and packaged; after the sheet backing step, it also includes a step of stacking and cutting the sheets with glue and the sheets after glue, in which step, the sheets with glue and the sheets after glue are neatly stacked and prepared for packaging.

[0014] Furthermore, in the above-mentioned production process of the crown cap with top pull ring: after the step of gluing the sheet material, a striping step is also included, in which the sheet material is vertically cut between the plane contours of the crown cap bodies of two rows back to back.

[0015] The present invention also provides a crown cap production line with a top pull ring, comprising a flatbed machine, a slicer, a printer, a glue machine, a punching machine, a molding machine and a finished product packaging machine which are arranged in sequence; the slicer and the flatbed machine form a flatbed-wave cutting integrated machine, which flattens the coiled material and then wave-cuts it into sheets, the front and rear edges of the sheets are both corrugated, and coincide with the edge lines of the plane contour of the crown cap cover body, the pull ring belt, and the pull ring body contour printed later.

[0016] Furthermore, in the above-mentioned crown cap production line with top pull ring: the edges of the lower knife holder plate and the supporting plate of the flat plate-wave cutting machine correspond to the front and rear edges of the sheet material.

[0017] Furthermore, in the above-mentioned crown cap production line with top pull ring: the printing machine and the gluing machine are combined to form a thousand-sheet printing and gluing machine.

[0018] Furthermore, in the above-mentioned crown cap production line with top pull ring: between the thousand-sheet printing and back-gluing machine and the punching machine, there is also a circular knife machine for vertically cutting the sheet material between the plane contours of the crown cap bodies of two rows back to back.

[0019] In the present invention, the coil is wave cut into sheets by wave cutting, and the sheets can be continuously fed into a punching machine to complete continuous punching during punching, thereby improving the production efficiency of crown caps.

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the production line of the present invention; Attached Figure 2 It is a schematic diagram of the sheet material; Attached Figure 3 is a schematic diagram of the lower tool holder; Attached Figure 4 It is a schematic diagram of the support plate. DETAILED DESCRIPTION

[0022] Embodiment 1 is a production process and production line of a crown cap with a top pull ring, such as Figure 1 As shown, the crown cap production of this embodiment completes the production of the crown cap with the top pull ring by using the coil. The crown cap production process and production line of this embodiment are described below according to the production process steps: The first step is the unwinding step 1, which is the step of unwinding the coil from the unwinder 110 at the beginning. At this time, the coil itself is still somewhat wound and uneven, which is not convenient for printing. Therefore, a flattening step is required. In some embodiments, the unwinder 110 itself is not on the production line, but at the starting position of the production line, the coil is unwound from the unwinder 110 and enters the production line.

[0023] The second step is the flattening step 2. Since the crown cover is made of metal material, the coil is not flat after being unwound from the unwinder 110 and needs to be flattened, that is, the coil is squeezed in the middle by two flat plates to make it flat. Therefore, this step is called the flattening step 2.

[0024] The third step, slicing step 3, follows the flattening step 2. Slicing step 3 is to cut a whole piece of coiled material (which has been flattened) into pieces of sheet material. In this embodiment, when slicing in slicing step 3, wave cutting is adopted, that is, the edge of the cut sheet material is wavy, so it is also called wave cutting. Since the coiled material needs to be fixed in slicing step 3, it is combined with flattening step 2 to complete these two steps by flattening-wave cutting integrated machine 120. In flattening-wave cutting integrated machine 120, the edge of the cut sheet material forms a corrugated shape, which coincides with the edge lines of the plane contour of the crown cap cover body, the pull ring belt, and the pull ring body contour printed later; in this way, the convex and concave of a sheet material are consistent with each other, which is convenient for continuous stamping later.

[0025] In this embodiment, the unwinding step 1, the flattening step 2 and the slicing step 3 are continuous in time. After the unwinding machine 110 unwinds, it immediately enters the flattening and slicing integrated machine 120 to form sheets, and the front and rear edges of these sheets are wavy and the convex and concave edges match each other. In this embodiment, the edges of the lower knife frame plate 300 and the material support plate 400 in the flattening and slicing integrated machine 120 correspond to the front and rear edges of the sheets. Figure 3 and Figure 4 As shown, the edge curve 350 of the lower knife holder plate 300, the edge curve 450 of the support plate 400, and the edges of the crown cap body plane contour 210, the ring pull band 230, and the ring pull body contour 220 correspond to each other during printing. The edge contour lines 250 at both ends of each sheet material correspond to the edge curve 350 of the lower knife holder plate 300 and the edge curve 450 of the support plate 400.

[0026] After completing these three steps, the sheets can be printed and glued. In this embodiment, the flat-plate-wave cutting integrated machine 120 occupies the first station of the production line. In some other embodiments, printing and gluing can be outsourced, so the sliced ​​sheets need to be packaged and transported to the cooperative workshop to complete printing and gluing. Therefore, in some other embodiments, the slicing step also includes a step of stacking and cutting the sheets formed by wave cutting. In the stacking and packaging step 4, the sheets are stacked neatly for easy packaging. The stacking and packaging step 4 can be completed on the production line. The packaging machine itself is a station on the production line. After being packaged by the packaging machine, it is transported to the printing and gluing workshop of the cooperative unit.

[0027] Then comes the printing step 5 and the gluing step 6. In this embodiment, these two steps are completed by the sheet printing and gluing machine 130. The sheet printing and gluing machine 130 is the second station on the crown cap production line. The printing step 5 and the gluing step 6 are completed. In this embodiment, the sheet printing and gluing machine 130 first performs double-sided printing on the sheet material, and prints the crown cap cover plane outline 210, the pull ring band 220, and the pull ring body outline 230 at the relative positions on the two sides of the sheet material. Figure 2 As shown. The crown cap body plane contour 210 and the ring pull ring body contour 220 are both circular, and the radius of the ring pull ring body contour 220 is half of the crown cap body plane contour 210. The ring pull ring body contour 220 and the crown cap body plane contour 210 are connected by a ring pull band 230, and the extension lines of the center line of the ring pull band 230 at both ends intersect the center of the ring pull ring body contour 210 and the crown cap body plane contour 220 respectively; on the sheet material, the crown cap body plane contour 210 is arranged in at least two staggered rows, and the ring pull band 230 and the ring pull ring body contour 220 are arranged oppositely; because the diameter of the crown cap body plane contour 210 is twice that of the ring pull ring body contour 220, therefore, when the crown cap body plane contours 210 on both sides are staggered, in the relative space, the respective ring pull bands and the ring pull ring body contours 220 will be side by side in the middle, as shown in FIG. Figure 2 As shown, the edge contour lines 250 at both ends of each sheet coincide with the edge lines of the crown cap cover plane contour 210, the pull ring band 230, and the pull ring body contour 220 printed thereon. In this embodiment, by arranging the crown cap cover plane contours 210 in at least two staggered rows, the utilization rate of the sheet can be improved and waste materials 101 can be reduced. In this embodiment, some characters can also be printed in the crown cap cover plane contours 210 on both sides, such as printing some text patterns such as trademarks in the crown cap cover plane contour 210 on the front side, and some award information can also be printed on the reverse side.

[0028] After the printing of the thousand sheets and the gluing machine 130 is completed, the back of the sheet is glued, and the glue inside the crown cap can be used to seal the bottle mouth in the future.

[0029] In some other embodiments, only the front side of the sheet is printed, and some text patterns such as trademarks are printed within the plane outline 210 of the crown cap body on the front side, while no printing is required and the back side is directly glued. Therefore, in many embodiments, the front side printing and the back side gluing are carried out simultaneously in the thousand-sheet printing and gluing machine 130.

[0030] In some other embodiments, the printing step 5 and the gluing step 6 can be outsourced separately and completed by a cooperative unit. The cooperative unit needs to make the edge lines of the crown cap cover plane contour 210, the pull ring band 230, and the pull ring body contour 220 coincide with the edge contour lines 250 at both ends of each sheet material. In the flat-plate-wave cutting integrated machine 120, when the coil is wave cut using the edge curve 350 of the lower tool holder plate 300 and the edge curve 450 of the support plate 400, the shapes of the edge lines of the crown cap cover plane contour 210, the pull ring band 230, and the pull ring body contour 220 are comprehensively considered during subsequent printing.

[0031] In the outsourcing process, after the wave-cut sheets have completed printing step 4 and gluing step 5 by the thousand-sheet printing and gluing machine 130, they need to be transported back for the next steps. Therefore, printing step 5 and gluing step 6 also include a packing and transportation step 7 to transport the printed and glued sheets back for the next steps.

[0032] In this embodiment, the coiled material is relatively wide. When punching later, if a certain type of punching machine cannot punch such a wide sheet material, it is necessary to perform a stripping process 8 to strip the relatively wide sheet material into two sets of relatively staggered crown cap body plane contours 210, pull ring bands 230, and pull ring body contours 220. The sheet material is vertically cut between two rows of back-to-back crown cap body plane contours 210 to form a stripped crown cap body plane contour 220. Figure 2 For the narrower sheet shown, the stripping process step 8 is completed by the circular knife machine 140. In this embodiment, the circular knife machine 140 is the fourth station on the production line. After the printing and gluing machine 130 on the third station on the production line automatically completes the printing and gluing, the sheet with the printed gluing output is directly input into the circular knife machine 140 on the fourth station to complete the sheet stripping process step 8. In some other embodiments, when the punching machine 160 can process the sheet with a relatively wide sheet, the stripping process step 8 is not required. Therefore, the circular knife machine 140 station can be bypassed on the production line and go directly to the next station. Of course, if the printing and gluing is outsourced, the sheet after the outsourcing printing and gluing can be directly put into this station on the production line.

[0033] The following is the punching step 10, which is completed by the punching machine 160. In order to make the punching proceed continuously, it is also necessary to set up an automatic feeder 150 at the fifth station of the production line to complete the step 9 of grabbing the sheet material and feeding it into the punching machine. In this embodiment, the automatic feeder 150 feeds the sheet material that has been slit by the circular knife machine 140 into the punching machine 160 in sequence, and matches the convex and concave edges of the sheet material to form a form that looks like a long roll, and automatically and continuously feeds the material.

[0034] The sixth station on the production line is the punching machine 160. The automatic feeder 150 continuously feeds the sheet material into the punching machine. In the punching machine, the plane outline 210 of the crown cap body is punched into a three-dimensional crown cap body, and the material of the middle part of the pull ring body outline 220 is eroded or punched onto the ring to form a thicker pull ring, which is convenient for manual pull ring, and the middle part of the pull ring is rounded to make the inner ring of the pull ring free of burrs and will not hurt the hand.

[0035] After the stamping step 10 is completed, the waste 101 generated during the stamping directly enters the waste collection container, and the semi-finished crown cap with top pull ring after stamping is conveyed to the molding machine 170 at the next station by the conveyor belt 102 for molding step 11, and finally the finished product is packaged and output step 12.

Claims

1. A production process for crown caps with top pull rings, using coil production, including flat plate, slicing, sheet printing and back glue, stamping, molding, and finished product packaging steps, characterized in that: When printing the sheet material, the plane contours of the crown cap body and the pull ring are printed, the plane contours of the crown cap body and the pull ring body are both circular, and the radius of the pull ring body contour is half of the plane contour of the crown cap body, the pull ring body contour and the crown cap body plane contour are connected by a pull ring belt, and the extension lines of the center line of the pull ring belt at both ends intersect the center of the pull ring body contour and the crown cap body plane contour respectively; on the sheet material, the crown cap body plane contours are arranged in at least two staggered rows in sequence, and the pull ring belt and the pull ring body contour are arranged relatively; When slicing, the coil is cut into sheets by wave cutting so that the edge of the sheet forms a corrugated shape, which coincides with the edge lines of the plane contour of the crown cap body, the pull ring belt, and the pull ring body contour printed later; During stamping, an automatic feeder is used to align the leading edge of the rear sheet with the trailing edge of the front sheet for feeding.

2. The production process of the crown cap with top pull ring according to claim 1, characterized in that: When the sheet is printed, the two crown caps are arranged in a mirror image outside the plane contours of the cover bodies of the two offset crown caps on the sheet.

3. The production process of the crown cap with top pull ring according to claim 2, characterized in that: When the sheet material is printed, both sides of the sheet material are printed simultaneously.

4. The production process of the crown cap with top pull ring according to claim 2, characterized in that: The sheet printing and sheet gluing are carried out at the same time, one side is printed and the other side is gluing.

5. The production process of the crown cap with top pull ring according to claim 3 or 4, characterized in that: The slicing step is followed by a stacking step of the wave-cutting sheets, in which the sheets are neatly stacked and packed; and after the sheet gluing step, the stacking step of the gluing sheets and the sheets after gluing is followed by a stacking step of the gluing sheets and the sheets after gluing are neatly stacked and prepared for packing.

6. The production process of the crown cap with top pull ring according to claim 3 or 4, characterized in that: After the step of gluing the sheet material, a striping step is also included, in which the sheet material is vertically cut between the plane contours of the crown cap bodies in two rows back to back.

7. A crown cap production line with a top pull ring, comprising a flatbed machine, a slicer, a printing machine, a glue machine, a punching machine, a molding machine and a finished product packaging machine arranged in sequence; characterized in that: The slicer and the flatbed machine form a flatbed-wave cutting machine, which flattens the coiled material and then waves-cuts it into sheets. The front and rear edges of the sheets are both corrugated and coincide with the edge lines of the crown cap body plane contour, the pull ring belt, and the pull ring body contour printed later.

8. The production line of crown caps with top pull rings according to claim 7, characterized in that: The edges of the lower knife holder plate and the material support plate of the flat plate-wave cutting machine correspond to the front and rear edges of the sheet material.

9. The crown cap production line with top pull ring according to claim 7, characterized in that: The printing machine and the gluing machine are combined to form a thousand-sheet printing and gluing machine.

10. The crown cap production line with top pull ring according to claim 7, characterized in that: Between the thousand-sheet printing and back-gluing machine and the punching machine, there is also a circular knife machine for vertically cutting the sheet material between the plane contours of the crown cap bodies in two rows back to back.

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