Supply equipment and method for strip with periodic patterns

Abstract

The embodiment of the invention discloses supply equipment and method for strips with periodic patterns, and relates to the technical field of packaging material supply. The supply equipment comprises a new unwinding assembly, an old unwinding assembly, a first identification assembly, a second identification assembly, a pre-cutting assembly, a splicing assembly, an acceleration assembly and a reference assembly. According to the supply equipment, on the basis of identification information of a first identification assembly and a second identification assembly, through a new unwinding assembly, an old unwinding assembly, an acceleration assembly and a reference assembly, the displacement amount of a new strip and the displacement amount of an old strip under the condition that tension is kept constant within a certain controlled range are controlled; after the phase relation of the periodic patterns on the new strip and the old strip relative to the pre-cutting point of the pre-cutting assembly is the same or within the preset phase error range, the new strip and the old strip are pre-cut; the splicing assembly is used for splicing the pre-cut new strip and the pre-cut old strip through a single-face adhesive tape to form a continuous strip. The device is suitable for providing the strips for the packaging production equipment.

Description

Technical Field

[0001] The present application relates to the technical field of packaging material supply, and in particular to a supply device and method for a strip material with a periodic pattern. Background Art

[0002] During the packaging production process, strips need to be pulled from the material roll to be provided to the packaging production equipment. When the strips (old strips) on the used material roll (old material roll) are about to and / or have just been exhausted, the tail of the old strips and the head of the new strips (pulled from the new material roll) need to be spliced ​​to form a continuous strip for use in the actual downstream production process.

[0003] In practical applications, some strips are printed with periodic patterns related to the products that need to be packaged and processed. After the products are packaged and processed, the position and shape of these periodic patterns on the final product must remain completely consistent within a certain error range. This requires that when splicing the tail of the old strip and the head of the new strip, it is necessary to ensure that the pattern period of the connected segment and the pattern period of the unconnected segment remain consistent within a certain error range (also known as absolute phase splicing).

[0004] In the existing technology, absolute phase splicing is performed manually. During the splicing process, the packaging production equipment needs to be slowed down and / or stopped in advance. After the manual absolute phase splicing is completed, the equipment is accelerated to the normal production speed, which greatly reduces the production efficiency of the packaging production equipment. In the process of automated absolute phase splicing, the new and old strips to be spliced ​​need to be in a stationary state, and then the absolute phase splicing is performed by the automated industrial equipment, which greatly reduces the production efficiency of the packaging production equipment. Summary of the Invention

[0005] In view of this, embodiments of the present application provide a supply device and method for a strip material with a periodic pattern, so as to improve the production efficiency of packaging production equipment.

[0006] In the first aspect, an embodiment of the present application provides a supply device for a strip with a periodic pattern, comprising: a new unwinding component for installing a new material roll and releasing the new strip; an old unwinding component for installing an old material roll and releasing the old strip; a first identification component, arranged on the running path of the new strip, for identifying the periodic pattern positioning information of the new strip; a second identification component, arranged on the running path of the old strip, for identifying the periodic pattern positioning information of the old strip; a pre-cutting component, arranged on the running path of the new strip and the old strip, for simultaneously pre-cutting the new strip and the old strip passing through the pre-cutting component, so as to simultaneously reduce the tensile strength of the new strip and the old strip; a splicing component, arranged on the running path of the new strip and the old strip, and downstream of the pre-cutting component, for splicing the new strip and the old strip pre-cut by the pre-cutting component through single-sided adhesive tape, so that the new strip and the old strip form a A continuous strip; an acceleration component, arranged downstream of the splicing component, for pulling out the new strip from the new strip roll and pulling it; a reference component, for pulling out the old strip from the old material roll and conveying it to the downstream packaging production equipment; wherein the supply equipment is configured to: before pre-cutting the new strip and the old strip, based on the periodic pattern positioning information of the new strip and the old strip identified by the first recognition component and the second recognition component, control the displacement of the new strip and the old strip while the tension is maintained constant within a certain controlled range through the new unwinding component, the old unwinding component, the acceleration component, and the reference component, so that the phase relationship of the periodic patterns on the new strip and the old strip relative to the pre-cutting point of the pre-cutting component is the same or within a preset phase error range.

[0007] On the second aspect, the embodiment of the present application provides a tape supply method with a periodic pattern tape, comprising: pulling the old tape out from the old material roll installed on the old unwinding component, and conveying it to the downstream packaging production equipment through the pre-cutting component, the splicing component and the reference component; pulling the new tape out from the new material roll installed on the new unwinding component, and passing it through the pre-cutting component, the splicing component and the acceleration component for winding, and towing it through the acceleration component; when the new tape and the old tape need to be spliced, the running speed of the new tape is accelerated to the same speed as the running speed of the old tape or within the preset speed error range, and the pre-cutting component is used to pre-cut the new tape and the old tape at the same time, so as to facilitate the new tape and the old tape to be spliced. A pre-cut is formed on the old strip at the same time; wherein, before pre-cutting the new strip and the old strip, the periodic pattern positioning information of the new strip identified by the first recognition component and the periodic pattern positioning information of the old strip identified by the second recognition component are used to control the displacement of the new strip and the old strip while the tension is maintained constant within a certain controlled range, so that the phase relationship of the periodic patterns on the new strip and the old strip relative to the pre-cut point of the pre-cutting component is the same or within a preset phase error range; the new strip and the old strip pre-cut by the pre-cutting component are spliced ​​using a splicing component, so that the new strip and the old strip form a continuous strip.

[0008] The supply equipment and method of the tape with periodic pattern of this embodiment, before pre-cutting the new tape and the old tape, controls the displacement of the new tape and the old tape while the tension is maintained constant within a certain controlled range through the new unwinding component, the old unwinding component, the acceleration component, and the reference component based on the periodic pattern positioning information of the new tape and the old tape identified by the first recognition component and the second recognition component, so that the phase relationship of the periodic patterns on the new tape and the old tape relative to the pre-cutting point of the pre-cutting component is the same or within a preset phase error range. Based on this, the new tape and the old tape are pre-cut, and the splicing component splices the new tape and the old tape pre-cut by the pre-cutting component with single-sided tape, so that the new tape and the old tape form a continuous tape, and then continuously provide tape to the downstream packaging production equipment. In this process, the packaging production equipment does not need to slow down or stop, thereby improving the production efficiency of the packaging production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1A schematic structural diagram of a supply device for a strip material with a periodic pattern provided in one embodiment of the present application;

[0011] Figure 2 A front view of a strip after splicing a new strip and an old strip provided in a specific embodiment of the present application;

[0012] Figure 3 A side view of a strip after splicing a new strip and an old strip provided in a specific embodiment of the present application;

[0013] Figure 4 A rear view of a strip after splicing a new strip and an old strip provided in a specific embodiment of the present application;

[0014] Figure 5 A schematic structural diagram of a pre-cut assembly is provided for a specific embodiment of the present application;

[0015] Figure 6 This is a state diagram of a pre-cutting assembly in a specific embodiment of the present application when pre-cutting new strips and old strips;

[0016] Figure 7 A structural diagram of a splicing assembly is provided for a specific embodiment of the present application;

[0017] Figure 8 This is a state diagram of a splicing assembly in a specific embodiment of the present application when splicing a new strip and an old strip;

[0018] Figure 9 A schematic diagram of a method for supplying a strip with a periodic pattern according to an embodiment of the present application.

[0019] Reference numerals:

[0020] 1-New unwinding assembly; 2-Old unwinding assembly; 3-First identification assembly; 4-Second identification assembly; 5-Pre-cutting assembly; 6-Splicing assembly; 7-Acceleration assembly; 8-Reference assembly; 51-First pre-cut piece; 52-Second pre-cut piece; 53-Pre-cutting power machine; 61-First splicing piece; 62-Second splicing piece; 63-Splicing power machine; 511-First pre-cutting mold; 512-First pre-cutting shaft; 521-Second pre-cutting mold; 522-Second pre-cutting shaft; 611-First splicing mold; 612-First splicing shaft; 621-Second splicing mold; 622-Second splicing shaft; 511a-Pre-cutting knife; 521a-Knife groove; 621a-Negative pressure hole; 91-New material roll; 92-Old material roll; 93-New tape; 94-Old tape; 95-Single-sided tape DETAILED DESCRIPTION

[0021] The embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described are only a portion of the embodiments of the present application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0022] In order to enable those skilled in the art to better understand the technical concepts, implementation plans and beneficial effects of the embodiments of the present application, specific examples are described in detail below.

[0023] Figure 1 A schematic diagram of a supply device for a strip with a periodic pattern provided in one embodiment of the present application, as shown in FIG. Figure 1 As shown, the supply equipment of the strip with periodic pattern in this embodiment may include: a new unwinding component 1, an old unwinding component 2, a first identification component 3, a second identification component 4, a pre-cutting component 5, a splicing component 6, an acceleration component 7, and a reference component 8.

[0024] The new unwinding assembly 1 is used to install a new material roll 91 and release a new strip 93.

[0025] The old unwinding assembly 2 is used to install the old material roll 92 and release the old strip 94.

[0026] The first recognition component 3 is arranged on the running path of the new strip 93 and is used to recognize the periodic pattern positioning information of the new strip 93.

[0027] The second identification component 4 is arranged on the running path of the old strip 94 and is used to identify the periodic pattern positioning information of the old strip 94.

[0028] The pre-cutting component 5 is provided on the running path of the new strip 93 and the old strip 94 and is used to pre-cut the new strip 93 and the old strip 94 to reduce the tensile strength of the new strip 93 and the old strip 94.

[0029] The splicing assembly 6 is arranged on the running path of the new strip 93 and the old strip 94 and is downstream of the pre-cutting assembly 5. It is used to splice the new strip 93 and the old strip 94 pre-cut by the pre-cutting assembly 5 through the single-sided adhesive tape 95 so that the new strip 93 and the old strip 94 form a continuous strip.

[0030] The acceleration component 7 is arranged downstream of the splicing component 6. After the new material roll 91 is installed in the new unwinding component 1, the new strip 93 passes through the pre-cutting component 5 and the splicing component 6 and is pulled by the acceleration component 7. The acceleration component 7 can be used to cooperate with the new unwinding component 1 to pre-tension the new strip 93; before the splicing process action is started, the acceleration component 7 is also used to cooperate with the new unwinding component 1 to complete the initial phase positioning of the new strip 93, determine the phase relationship of the periodic pattern on the new strip 93 relative to the pre-cutting component 5 and the acceleration component 6, and provide the necessary basic conditions for absolute phase splicing; during the execution of the splicing process action, the acceleration component can first be used to cooperate with the new unwinding component 1 to accelerate the new strip 93 to a running speed basically the same as that of the old strip 94, and then can also be used to cooperate with the splicing component 6 to pull off and remove the front end of the new strip 94.

[0031] Reference component 8, before the splicing process is completed, the old strip 94 passes through the pre-cutting component 5 and the splicing component 6 and is transported to the downstream packaging production equipment through the reference component 8; after the splicing process is completed, the new strip 93 and the old strip 94 form a continuous strip, and the new strip 93 passes through the pre-cutting component 5 and the splicing component 6 and is transported to the downstream packaging production equipment through the reference component 8; wherein, the running speed of the reference component 8 is basically the same as the running speed of the downstream packaging production equipment; the reference component 8 can be used to follow the running speed of the downstream packaging production equipment, and provide a unique speed and position reference for the operation of the new unwinding component 1, the old unwinding component 2, the pre-cutting component 5, the splicing component 6, the acceleration component 7, etc. during the execution of the splicing process, providing the necessary basic conditions for the absolute phase splicing of the strip.

[0032] In particular, the supply equipment for the strip with periodic pattern provided in the present application is configured as follows: before pre-cutting the new strip 93 and the old strip 94, based on the periodic pattern positioning information of the new strip 93 and the old strip 94 identified by the first identification component 3 and the second identification component 4, the displacement of the new strip 93 and the old strip 94 is controlled by the new unwinding component 1, the old unwinding component 2, the acceleration component 7, and the reference component 8 while the tension is maintained constant within a certain controlled range, so that the phase relationship of the periodic patterns on the new strip 93 and the old strip 94 relative to the pre-cutting point of the pre-cutting component 5 is the same or within a preset phase error range.

[0033] In some embodiments, the new strip 93 directly enters the acceleration assembly 7 after passing through the pre-cut assembly 5 and the splicing assembly 6; in addition, it is necessary to ensure that the pre-cut assembly 5, the splicing assembly 6, and the acceleration assembly 7 are relatively fixed in position and that there are no other components or assemblies in the combination of the three that can change the running path of the new strip 93, so that the running path of the new strip 93 through the combination of the pre-cut assembly 5, the splicing assembly 6, and the acceleration assembly 7 is fixed and unchanging, and there is no relative position sliding phenomenon between the new strip 93 and the acceleration assembly 7, i.e., there is no slippage between the new strip 93 and the acceleration assembly 7; in this way, it is only necessary to ensure that the tension of the new strip 93 remains constant within a certain controlled range, which can ensure that the speed and displacement of the acceleration assembly 7 are completely equal to the speed and displacement of the new strip 93, and at the same time, it also ensures that the speed and displacement of the acceleration assembly 7 are completely equal to the speed and displacement of the new strip 93 through the pre-cut assembly 5 and the splicing assembly 6.

[0034] Similarly, the old strip 94 can directly enter the reference assembly 8 after passing through the pre-cut assembly 5 and the splicing assembly 6, or the old strip 94 can directly enter the pre-cut assembly 5 and the splicing assembly 6 after passing through the reference assembly 8, or the old strip 94 can pass through the pre-cut assembly 5, the reference assembly 8, and the splicing assembly 6 in sequence, i.e., the reference assembly 8 is located upstream of the pre-cut assembly 5 or between the splicing assembly 6 and the pre-cut assembly 5 or downstream of the splicing assembly 6; in addition, it is necessary to ensure that the pre-cut assembly 5, the splicing assembly 6, and the reference assembly 8 are relatively fixed in position and that there are no other components or assemblies in the combination of the three that can change the running path of the old strip 94, so that the running path of the old strip 94 through the combination of the pre-cut assembly 5, the splicing assembly 6, and the reference assembly 8 is fixed and unchanging, and there is no relative position sliding phenomenon between the old strip 94 and the reference assembly 8, i.e., there is no slippage between the old strip 94 and the reference assembly 8; in this way, it is only necessary to ensure that the tension of the old strip 94 remains constant within a certain controlled range, which can ensure that the speed and displacement of the reference assembly 8 are completely equal to the speed and displacement of the old strip 94, and at the same time, it also ensures that the speed and displacement of the reference assembly 8 are completely equal to the speed and displacement of the old strip 94 through the pre-cut assembly 5 and the splicing assembly 6, thereby ensuring the accuracy of the pre-cutting and absolute phase splicing of the new strip 93 and the old strip 94 by the pre-cut assembly 5 and the splicing assembly 6.

[0035] In a specific embodiment, the new strip 93 directly enters the acceleration component 7 after passing through the pre-cutting component 5 and the splicing component 6, and the new strip 93 does not pass through any other parts or components that can change the running path of the new strip 93 between the pre-cutting component 5 and the splicing component 6 and the acceleration component 7, that is, the running path of the new strip 93 from the pre-cutting component 5 and the splicing component 6 to the acceleration component 7 is fixed, and there is no form of relative position sliding between the new strip 93 and the acceleration component 7, that is, there is no slipping between the new strip 93 and the acceleration component 7. In this way, it is only necessary to ensure that the tension of the new strip 93 remains constant within a certain controlled range, which can ensure that the speed and displacement of the acceleration component 7 are completely equal to the speed and displacement of the new strip 93, and at the same time, it is also ensured that the speed and displacement of the acceleration component 7 are completely equal to the speed and displacement of the new strip 93 passing through the pre-cutting component 5 and the splicing component 6. In addition, the old strip 94 enters the reference component 8 directly after passing through the pre-cutting component 5 and the splicing component 6, and the old strip 94 does not pass through any other parts or components that can change the running path of the old strip 94 between the pre-cutting component 5 and the splicing component 6 and the reference component 8, that is, the running path of the old strip 94 from the pre-cutting component 5 and the splicing component 6 to the reference component 8 is fixed, and there is no form of relative position sliding between the old strip 94 and the reference component 8, that is, there is no slipping between the old strip 94 and the reference component 8. In this way, it is only necessary to ensure that the tension of the old strip 94 remains constant within a certain controlled range to ensure that the speed and displacement of the reference component 8 are completely equal to the speed and displacement of the old strip 94. At the same time, it is also ensured that the speed and displacement of the reference component 8 are completely equal to the speed and displacement of the old strip 94 passing through the pre-cutting component 5 and the splicing component 6, thereby ensuring the accuracy of pre-cutting and absolute phase splicing of the new strip 93 and the old strip 94 by the pre-cutting component 5 and the splicing component 6.

[0036] The acceleration component 7 can work together with the new unwinding component 1 to tension the new strip 93 to keep the tension of the new strip 93 constant within a certain controlled range; the reference component 8 can work together with the old unwinding component 2 to tension the old strip 94 to keep the tension of the old strip 94 constant within a certain controlled range.

[0037] In some embodiments, the first recognition component 3 can be set at any position on the running path of the new strip 93 in the combination of the pre-cutting component 5, the splicing component 6, and the acceleration component 7, or the first recognition component 3 can be set on the running path of the new strip 93 upstream or downstream of the combination of the pre-cutting component 5, the splicing component 6, and the acceleration component 7, and does not contact the new strip 93, so that the running path of the new strip 93 between the first recognition component 3 and the pre-cutting point of the pre-cutting component 5 is fixed; the first recognition component 3 can identify the periodic pattern positioning information of the new strip 93; further, due to the running path of the new strip 93 when it passes through the combination of the pre-cutting component 5, the splicing component 6, and the acceleration component 7 It is fixed, and the running path of the new strip 93 between the pre-cutting component 5 and the splicing component 6 is fixed (or the running path of the new strip 93 between the splicing point of the first identification component 3 and the splicing component 6 is fixed), and there is no slippage between the new strip 93 and the acceleration component 7. The phase relationship of the periodic pattern of the new strip 93 relative to the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6 can be determined based on the periodic information of the periodic pattern, the positioning information of the periodic pattern of the new strip 93 identified by the first identification component 3, the running path length of the new strip 93 between the first identification component 3 and the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6, and the actual running displacement of the acceleration component 7.

[0038] In addition, the second identification component 4 can be set at any position on the running path of the old strip 94 in the combination of the pre-cutting component 5, the splicing component 6, and the reference component 8, or the second identification component 4 can be set on the running path of the old strip 94 upstream or downstream of the combination of the pre-cutting component 5, the splicing component 6, and the reference component 8, and has no contact with the old strip 94, so that the running path of the old strip 94 between the second identification component 4 and the pre-cutting point of the pre-cutting component 5 can be fixed; the second identification component 4 can identify the periodic pattern positioning information of the old strip 94; further, because the running path of the old strip 94 when passing through the combination of the pre-cutting component 5, the splicing component 6, and the reference component 8 is fixed, the old strip 94 between the pre-cutting component 5 and the splicing component 6 The running path is fixed (or the running path of the old strip 94 between the splicing point of the second identification component 4 and the splicing component 6 is fixed), and there is no slippage between the old strip 94 and the reference component 8. The phase relationship of the periodic pattern of the old strip 94 relative to the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6 can be determined based on the periodic information of a single periodic pattern, the positioning information of the periodic pattern of the old strip 94 identified by the second identification component 4, the running path length of the old strip 94 between the second identification component 4 and the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6, and the actual running displacement of the reference component 8, thereby further ensuring the accuracy of pre-cutting and absolute phase splicing of the new strip 93 and the old strip 94 by the pre-cutting component 5 and the splicing component 6.

[0039] In a specific embodiment, the first identification component 3 is arranged on the running path of the new strip 93 upstream of the pre-cutting component 5, the splicing component 6 and the acceleration component 7, and the running path of the new strip 93 between the first identification component 3 and the pre-cutting point of the pre-cutting component 5 is fixed; the first identification component 3 can identify the periodic pattern positioning information of the new strip 93; further, because the running path of the new strip 93 through the pre-cutting component 5, the splicing component 6 and the acceleration component 7 is fixed and there is no slippage between the new strip 93 and the acceleration component 7, the phase relationship of the periodic pattern of the new strip 93 relative to the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6 can be determined based on the periodic information of the periodic pattern, the periodic pattern positioning information of the new strip 93 identified by the first identification component 3, the running path length of the new strip 93 between the first identification component 3 and the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6, and the actual running displacement of the acceleration component 7. In addition, the second identification component 4 is set on the running path of the old strip 94 upstream of the combination of the pre-cutting component 5, the splicing component 6, and the reference component 8. The running path of the old strip 94 between the second identification component 4 and the pre-cutting point of the pre-cutting component 5 is fixed; the second identification component 4 can identify the periodic pattern positioning information of the old strip 94; further, because the running path of the old strip 94 through the pre-cutting component 5, the splicing component 6, and the reference component 8 is fixed, the running path of the old strip 94 between the pre-cutting component 5 and the splicing component 6 is fixed, and the old strip 94 and the reference component 8 are fixed. There is no slippage between the components 8, and the phase relationship of the periodic pattern of the old strip 94 relative to the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6 can be determined based on the periodic information of the periodic pattern, the positioning information of the periodic pattern of the old strip 94 identified by the second identification component 4, the running path length of the old strip 94 between the second identification component 4 and the pre-cutting point of the pre-cutting component 5 and the splicing point of the splicing component 6, and the actual running displacement of the reference component 8, thereby further ensuring the accuracy of pre-cutting and absolute phase splicing of the new strip 93 and the old strip 94 by the pre-cutting component 5 and the splicing component 6.

[0040] In some embodiments, the first identification component 3 and the second identification component 4 can identify the periodic pattern positioning information of the new strip 93 and the old strip 94 based on the periodic patterns on the new strip 93 and the old strip 94 themselves; they can also identify the periodic pattern positioning information of the new strip 93 and the old strip 94 based on color mark points that are equidistant from the period of the periodic pattern of the new strip 93 and the old strip 94. The color mark points are points printed on the strip at equidistant intervals from the period of the periodic pattern to facilitate industrial equipment to effectively identify the phase of the periodic pattern.

[0041] In a specific embodiment, the periodic pattern positioning information of the new strip 93 and the old strip 94 is identified by color mark points that are equidistant from the periodic pattern of the new strip 93 and the old strip 94, that is, the first identification component 3 and the second identification component 4 can use color mark recognition sensors.

[0042] The pre-cutting component 5 can simultaneously pre-cut the new strip 93 and the old strip 94 that have passed through the pre-cutting component 5 online dynamically to reduce the tensile strength of the new strip 93 and the old strip 94. In a specific implementation, pre-cuts are formed on the new strip 93 and the old strip 94 that have been pre-cut by the pre-cutting component 5, and the tensile strength of the new strip 93 and the old strip 94 are reduced at the pre-cuts of the new strip 93 and the old strip 94, respectively. Moreover, the tensile force that the new strip 93 and the old strip 94 can withstand after the tensile strength is reduced is less than the inherent limit that the new strip 93 and the old strip 94 can withstand. The tension is greater than the tension applied to the strip during the process of supplying the strip to the downstream packaging production equipment, so that in the subsequent process of splicing the new strip 93 and the old strip 94 through the splicing component 6, the rear end of the old strip 94 (that is, the old strip 94 between the pre-cut end of the old strip 94 and the old material roll 92) is pulled off and removed from the pre-cut end of the old strip 94 through the old unwinding component 2, and / or the front end of the new strip 93 (that is, the new strip 93 between the pre-cut end of the new strip 93 and the acceleration component 7) is pulled off and removed from the pre-cut end of the new strip 93 through the acceleration component 7.

[0043] After the pre-cutting component 5 pre-cuts the new tape 93 and the old tape 94, the splicing component 6 cooperates with the acceleration component 7 and the new unwinding component 1 and the old unwinding component 2 to splice the new tape 93 and the old tape 94 through the single-sided tape 95, thereby forming a continuous tape from the new material roll 91 to the reference component 8, continuously providing the downstream packaging production equipment with the required tape for production. In this process, it is necessary to use the old unwinding component 2 to pull the rear end of the old tape 94 (that is, the old tape 94 between the pre-cut end of the old tape 94 and the old material roll 92) from the pre-cut end of the old tape 94 and / or use the acceleration component 7 to pull the front end of the new tape 93 (that is, the new tape 93 between the pre-cut end of the new tape 93 and the acceleration component 7) from the pre-cut end of the new tape and remove it.

[0044] In the continuous strip, the old strip 94 from the pre-cut of the old strip 94 to the reference component 8 and the new strip 93 from the pre-cut of the new strip 93 to the new material roll 91 are retained, that is, the old strip 94 from the pre-cut of the old strip 94 to the old material roll 92 and the new strip 93 from the pre-cut of the new strip 93 to the acceleration component 7 are all pulled apart and removed, and in the continuous strip, the retained new strip 93 and the old strip 94 are spliced ​​together without overlap and without spacing by the single-sided tape 94.

[0045] To meet the requirements for absolute phase splicing, it is necessary to ensure that: the last periodic pattern of the old strip 94 retained on the continuous strip and the first periodic pattern of the new strip 93 each constitute a complete periodic pattern. Furthermore, the first periodic pattern portion of the new strip 93 between the pre-cut and the new material roll 91 and the last periodic pattern portion of the old strip 94 between the pre-cut and the reference assembly 8 can be spliced ​​together to form a complete periodic pattern, or the first periodic pattern of the new strip 93 between the pre-cut and the new material roll 91 and the last periodic pattern of the old strip 94 between the pre-cut and the reference assembly 8 each constitute a complete periodic pattern.

[0046] In a specific embodiment, the pre-cutting component 5 is arranged on the running path of the new strip 93 and the old strip 94. When it is determined based on the identification information of the first identification component 3 and the second identification component 4 that the phase relationship of the periodic patterns of the new strip 93 and the old strip 94 relative to the pre-cutting point of the pre-cutting component 5 is the same or is within a preset phase error range, the new strip 93 and the old strip 94 running at the same speed or within a preset second speed error range are pre-cut at the same time to reduce the tensile strength of the new strip 93 and the old strip 94. The splicing component 6 is arranged on the running path of the new strip 93 and the old strip 94, and is downstream of the pre-cutting component 5. After the pre-cutting component 5 pre-cuts the new strip 93 and the old strip 94, the splicing component 6 cooperates with the acceleration component 7 and the new unwinding component 1 and the old unwinding component 2 to splice the new strip 93 and the old strip 94 through the single-sided tape 95 to form a continuous strip from the new material roll 91 to the reference component 8. In the continuous strip, the old strip 94 from the pre-cut end of the old strip 94 to the reference component 8 and the new strip 93 from the pre-cut end of the new strip 93 to the new material roll 91 are retained, thereby continuously providing continuous strips for the downstream packaging production equipment. In this process, the packaging production equipment does not need to slow down or stop, thereby improving the production efficiency of the packaging production equipment.

[0047] In the actual production process of the downstream packaging production equipment, the continuous strip needs to be cut at a fixed interval according to the periodic pattern, and each strip after cutting contains an integer number of complete periodic patterns (for example, contains a complete periodic pattern). Then, the cut single strips are used one by one, and all strips containing the single-sided tape 95 after cutting need to be removed. If the single-sided tape 95 for splicing is cut on more cut strips during the process of the downstream packaging production equipment cutting the continuous strip at a fixed interval, More slit strips will need to be discarded, which will lead to unnecessary waste of strips and increase product quality risks. In order to effectively save strips and reduce product quality risks, further, when pre-cutting the new strip 93 and the old strip 94 through the pre-cutting component 5, it is necessary to make the pre-cut edges of the new strip 93 and the old strip 94 located at designated positions of a periodic pattern on the new strip 93 and the old strip 94, respectively, to ensure that after the downstream packaging production equipment slits the continuous strip, the single-sided tape 95 is present in the less slit strips.

[0048] In a specific embodiment, by setting a specific first preset displacement , second preset displacement , the third preset displacement , the fourth preset displacement and the fifth preset displacement, so that the acceleration component 7 and the new unwinding component 1 jointly accelerate the new strip 93 to the same running speed as the old strip 94 or within the preset error range, the phase relationship of the periodic patterns of the new strip 93 and the old strip 94 relative to the pre-cut of the pre-cut component 5 is exactly the same or within the preset phase error range. At the same time, the pre-cut component 5 also just pre-cuts the running new strip 93 and the old strip 94 and forms a pre-cut, or, further, on the premise of ensuring that the phase relationship of the periodic patterns of the new strip 93 and the old strip 94 relative to the pre-cut of the pre-cut component 5 is exactly the same or within the preset phase error range, the pre-cuts on the new strip 93 and the old strip 94 are respectively located at the specified positions of a periodic pattern on the new strip 93 and the old strip 94, which can ensure that after the continuous strip is cut at a fixed intercept by the downstream packaging production equipment, the single-sided tape 95 for splicing exists in the strips after less cutting, further saving strips and reducing product quality risks.

[0049] The first preset displacement For the initial phase positioning displacement, the new strip 93 that has been wound can be pre-tensioned by the acceleration component 7 and the new unwinding component 1, and then the acceleration component 7 and the new unwinding component 1 can be used to make the new strip 93 run forward at a low speed while maintaining the tension established during the pre-tensioning process, until the first recognition component 3 detects the specified number of periodic pattern positioning information on the new strip 93, and then continue to run forward for the first preset displacement. After the displacement, it stops to make necessary preparations for the subsequent absolute phase splicing. The period of the strip periodic pattern, the running path length of the new strip 93 between the first recognition component 3 and the pre-cutting component 5 and the third preset displacement Determination is made to ensure that after the initial phase positioning is completed, the new strip 93 moves forward for a third preset displacement. Afterwards, or, the new strip 93 moves forward for a third preset displacement. After the sum of the first and fifth preset displacements, the designated position of a periodic pattern on the new strip 93 just runs to the pre-cut point.

[0050] The second preset displacement For position tracking displacement, that is, after the splicing process is started, the second recognition component 4 detects the specified number of periodic pattern positioning information of the old strip 94, and the old strip 94 needs to move forward for the second preset displacement. Then, the acceleration component 7 is started, so that the new strip 93 begins to accelerate under the combined action of the acceleration component 7 and the new unwinding component 1. The second preset displacement The period of the strip periodic pattern, the running path length of the old strip 94 between the second identification component 4 and the pre-cut component 5 and the fourth preset displacement Determine to ensure that after the position tracking is completed, the old strip 94 moves forward for the fourth preset displacement Afterwards, or, the old strip 94 moves forward again for a fourth preset displacement After the sum of the displacement and the fifth preset displacement, the designated position of a periodic pattern on the old strip 94 just runs to the pre-cut point.

[0051] The third preset displacement The third preset displacement is the displacement of the old strip 94 during the process of the new strip 93 accelerating from zero to the same speed as the old strip 94 or within the preset error range under the joint action of the acceleration component 7 and the new unwinding component 1 after the splicing process is started. is a set constant, where .

[0052] The fourth preset displacement To accelerate the displacement, that is, after the splicing process is started, under the joint action of the acceleration component 7 and the new unwinding component 1, the speed of the new strip 93 is accelerated from zero to the same speed as the old strip 94 or within the preset error range, the displacement of the new strip 93. is a set constant, where .

[0053] In a specific embodiment, under the cooperation of the acceleration component 7 and the new unwinding component 1, the new strip 93 continues to move forward at a low speed after completing the pre-tensioning, until the first recognition component 3 recognizes the periodic pattern positioning information of the specified number of new strips 93, and then the strip 93 moves forward for the first preset displacement. Then the supply device of the present invention determines whether it is necessary to splice the new strip 93 and the old strip 94. If necessary (for example, it is detected that the diameter of the old material roll 92 reaches a certain preset threshold and / or the material change mark at the tail end of the old strip 94 is detected), the second recognition component 4 starts to recognize the periodic pattern positioning information of the old strip 94. When the second recognition component 4 recognizes the periodic pattern positioning information of the specified number of old strips 94, it monitors whether the displacement of the old strip 94 reaches the second preset displacement. , when the second preset displacement is reached When the speed of the new strip 93 is accelerated from zero to the same speed as the old strip 94 or within the preset speed error range, the acceleration component 7 and the new unwinding component 1 cooperate to accelerate the running speed of the new strip 93 from zero to the same speed as the old strip 94 or within the preset speed error range, and in the process of accelerating the running speed of the new strip 93 from zero to the same speed as the old strip 94 or within the preset speed error range, the new unwinding component 1, the old unwinding component 2, the acceleration component 7, and the reference component 8 respectively control the new strip 93 to just run forward for the fourth preset displacement. And the old strip 94 just runs forward the third preset displacement When the running speed of the new strip 93 is accelerated from zero to the same as that of the old strip 94 or within the preset speed error range, it can be ensured that the phase relationship between the periodic patterns on the new strip 93 and the old strip 94 relative to the pre-cutting point of the pre-cutting component 5 is the same or within the preset phase error range. At this time, the pre-cutting component 5 just pre-cuts the new strip 93 and the old strip 94 that are running synchronously and passing through the pre-cutting component 5 at the same time.

[0054] Alternatively, further, after the running speed of the new strip 93 is accelerated from zero to the same as that of the old strip 94 or within the preset speed error range (the new strip 93 just runs forward for the fourth preset displacement And the old strip 94 just runs forward the third preset displacement After that, the new strip 93 and the old strip 94 are continued to be controlled to move forward synchronously for the fifth preset displacement. The pre-cutting component 5 just pre-cuts the new strip 93 and the old strip 94 that are moving synchronously and passing through the pre-cutting component 5 at the same time, and forms pre-cuts on the new strip 93 and the old strip 94 respectively, so that the pre-cuts on the new strip 93 and the old strip 94 are respectively located at specified positions of a periodic pattern on the new strip 93 and the old strip 94.

[0055] In a specific embodiment, since the new tape 93 is fixed and unchanged in all running paths of the first identification assembly 3, the pre-cutting assembly 5 and the acceleration assembly 7, and there is no slippage phenomenon between the new tape 93 and the acceleration assembly 7, the running displacement and speed of the acceleration assembly 7 are the running displacement and speed of the new tape 93, that is, the actual running displacement and speed of the acceleration assembly 7 can be monitored to monitor the running displacement and speed of the new tape 93, and further, the first preset displacement , the fourth preset displacement and the fifth preset displacement of the new tape 93 are monitored.

[0056] In addition, since the old tape 94 is fixed and unchanged in all running paths of the second identification assembly 4, the pre-cutting assembly 5 and the reference assembly 8, and there is no slippage phenomenon between the old tape 94 and the reference assembly 8, the running displacement and speed of the reference assembly 8 are the running displacement and speed of the old tape 94, that is, the actual running displacement and speed of the reference assembly 8 can be monitored to monitor the running displacement and speed of the old tape 94, and further, the second preset displacement , the third preset displacement and the fifth preset displacement of the old tape 94 are monitored.

[0057] Figures 2 to 4 The application further provides a schematic diagram of a splicing section after the new tape 93 and the old tape 94 are spliced by the single-sided tape 95 according to the above-mentioned embodiments.

[0058] In the splicing process, in a specific embodiment of the application, the pre-cutting assembly 5 simultaneously pre-cuts the new tape 93 and the old tape 94, and simultaneously forms a pre-cutting hole arranged by a plurality of discontinuous holes on the new tape 93 and the old tape 94, then the splicing assembly 5 drives the single-sided tape 95 to rotate, the first adhesive part of the single-sided tape 95 is adhered to the old tape 94 on the downstream side of the pre-cutting hole of the old tape 94, the old unwinding assembly 2 is decelerated, and the tail end of the old tape 93 (i.e., the old tape 94 between the pre-cutting hole of the old tape 94 and the old material roll 92) is pulled off from the pre-cutting hole of the old tape 94; the second adhesive part of the single-sided tape 95 is adhered to the new tape 93 on the upstream side of the pre-cutting hole of the new tape 93, and the acceleration assembly 7 is accelerated, and the front end of the new tape 93 (i.e., the new tape 93 between the pre-cutting hole of the new tape 93 and the acceleration assembly 7) is pulled off from the pre-cutting hole of the new tape 93.

[0059] When the pre-cutting holes of the new tape 93 and the old tape 94 run synchronously to the splicing assembly 6, the tail end of the old tape 94 (i.e., the old tape 94 between the pre-cutting hole of the old tape 94 and the old material roll 92) can be pulled off from the pre-cutting hole of the old tape 94 by rapidly reducing the actual running speed of the old unwinding assembly 2, and the front end of the new tape 93 (i.e., the new tape 93 between the pre-cutting hole of the new tape 93 and the acceleration assembly 7) can be pulled off from the pre-cutting hole of the new tape 93 by rapidly increasing the actual running speed of the acceleration assembly 7.

[0060] The pre-cutting component 5 pre-cuts the new strip 93 and the old strip 94. In one embodiment of the present application, see Figure 5 and Figure 6 , the pre-cut component 5 may include:

[0061] A first pre-cut piece 51 and a second pre-cut piece 52; the second pre-cut piece 51 is arranged opposite to the first pre-cut piece 52, and the minimum distance between the second pre-cut piece 52 and the first pre-cut piece 51 is less than the sum of the thicknesses of the new strip 93 and the old strip 94; a pre-cutting power machine 53 is used to drive the first pre-cut piece 51 and / or the second pre-cut piece 52 to rotate. One pre-cutting power machine 53 can be used to simultaneously drive the first pre-cut piece 51 and the second pre-cut piece 52 to rotate. For example, the first pre-cut piece 51 and the second pre-cut piece 52 are connected by a gear transmission, or two pre-cutting power machines 53 can be used to respectively drive the first pre-cut piece 51 and the second pre-cut piece 52 to rotate.

[0062] The minimum distance between the second pre-cut piece 52 and the first pre-cut piece 51 is the distance between the meshing surfaces of the second pre-cut piece 52 and the first pre-cut piece 51 when they pre-cut the new strip 93 and the old strip 94 during operation.

[0063] In a specific embodiment, the pre-cutting power machine 53 drives the first pre-cut piece 51 to rotate, and at the same time drives the second pre-cut piece 52 to rotate through gears; the first pre-cut piece 51 and the second pre-cut piece 52 rotate in opposite directions.

[0064] When the phase relationship between the periodic patterns of the new strip 93 and the old strip 94 relative to the pre-cutting component 5 is the same or within the preset error range, and the designated position of a periodic pattern on the new strip 93 and the old strip 94 just runs to the pre-cutting point, the pre-cutting power machine 53 drives the first pre-cutting piece 51 and / or the second pre-cutting piece 52 to rotate, and pre-cuts the new strip 93 and the old strip 94 at the same time, and forms pre-cuts on the new strip 93 and the old strip 94, and the pre-cuts on the new strip 93 and the old strip 94 are exactly located on the new strip 93 and the old strip 94, respectively. A specified position of a certain periodic pattern is provided so that the new tape 93 and the old tape 94 can be spliced ​​together using the splicing component 5, and in the spliced ​​section, the last periodic pattern portion on the old tape 94 retained on the spliced ​​section and the first periodic pattern portion on the new tape 93 can be spliced ​​together to form a complete periodic pattern. At the same time, after the downstream packaging production equipment cuts the continuous tape at a fixed interval, the single-sided tape 95 used to splice the new tape 93 and the old tape 94 only exists in the tapes after less cutting.

[0065] The specific forms of the first pre-cut piece 51 and the second pre-cut piece 52 in the pre-cutting assembly 5 are not limited. As a preferred embodiment, the first pre-cut piece 51 has a first pre-cutting mold 511; the second pre-cut piece 52 has a second pre-cutting mold 521; the minimum distance between the second pre-cutting mold 521 and the first pre-cutting mold 511 is less than the sum of the thicknesses of the new strip 93 and the old strip 94; the top surface of the first expected mold has a pre-cutting knife 511a; the top surface of the second pre-cutting mold 521 has a knife groove 521a adapted to the pre-cutting knife 511a.

[0066] The pre-cutter 511a includes a plurality of discontinuous fork teeth, and the knife-yielding groove 521a includes a plurality of discontinuous yielding holes that engage with the fork teeth in the pre-cutter 511a, so that when the new strip 93 and the old strip 94 are pre-cut simultaneously by the mutual engagement of the pre-cutter 511a and the knife-yielding groove 521a, a pre-cut formed by an arrangement of a plurality of discontinuous holes can be formed on the new strip 93 and the old strip 94 at the same time.

[0067] During operation, the minimum distance between the first pre-cutting die 511 and the second pre-cutting die 521 is less than the sum of the thicknesses of the new strip 93 and the old strip 94, so that the new strip 93 and the old strip 94 can be pre-cut by the first pre-cutting die 511 and the second pre-cutting die 521 to form a pre-cut on the new strip 93 and the old strip 94 consisting of a plurality of discontinuous holes.

[0068] During operation, the pre-cutting power machine 53 drives the first pre-cutting part 51 and the second pre-cutting part 52 to rotate so that the pre-cutting knife 511a in the first pre-cutting mold 511 and the knife groove 521a in the second pre-cutting mold 521 engage with each other, so as to simultaneously pre-cut the specified positions of a periodic pattern on the new strip 93 and the old strip 94 that are in the pre-cutting component 5, run at the same speed, have the same phase relationship relative to the pre-cutting component 5 or are within a preset error range, so as to simultaneously form a pre-cut formed by a plurality of discontinuous holes at the specified positions of a periodic pattern on the new strip 93 and the old strip 94.

[0069] In some examples, the pre-cutting assembly 5 includes a first pre-cutting piece 51, a second pre-cutting piece 52 and a pre-cutting power machine 53, wherein the first pre-cutting piece 51 includes a first pre-cutting mold 511 and a first pre-cutting shaft 512, and the second pre-cutting piece 52 includes a second pre-cutting mold 521 and a second pre-cutting shaft 522.

[0070] The first pre-cutting shaft 512 is used to support the first pre-cutting mold 511 .

[0071] The second pre-cutting shaft 522 is used to support the second pre-cutting mold 521 .

[0072] The first pre-cutting mold 511 is disposed on the first pre-cutting shaft 512 , and the second pre-cutting mold 521 is disposed on the second pre-cutting shaft 522 .

[0073] The pre-cutting power machine 53 is connected to the first pre-cutting shaft 512 or the second pre-cutting shaft 522 to drive the first pre-cutting shaft 512 or the second pre-cutting shaft 522 .

[0074] One of the first pre-cutting mold 511 and the second pre-cutting mold 521 is provided with a pre-cutting knife 511a, and the other is provided with a knife-yielding groove 521a coupled to the pre-cutting knife 511a. In the process of the first pre-cutting shaft 512 and the second pre-cutting shaft 522 driving the first pre-cutting mold 511 and the second pre-cutting mold 521 to rotate respectively, the pre-cutting knife 511a provided in the first pre-cutting mold 511 and the knife-yielding groove 521a in the second pre-cutting mold 521 are used to pre-cut the specified positions of a periodic pattern on the new strip 93 and the old strip 94 at the same time, so as to form a pre-cut formed by a plurality of discontinuous holes at the specified positions of a periodic pattern on the new strip 93 and the old strip 94 at the same time, so as to reduce the tensile strength of the new strip 93 and the old strip 94 at the same time.

[0075] During the rotation of the first pre-cutting die 511 and the second pre-cutting die 521 , the minimum distance between them is less than the sum of the thicknesses of the new strip 93 and the old strip 94 .

[0076] See also Figure 6 The first pre-cutting shaft 512 is driven by the pre-cutting power machine 53, and the second pre-cutting shaft 522 is driven to rotate through the gear, further driving the first pre-cutting die 511 and the second pre-cutting die 521 to simultaneously pre-cut the specified position of a periodic pattern on the new strip 93 and the old strip 94 at the pre-cutting point and form a pre-cut, which is used to reduce the tensile strength of the specified position of a periodic pattern on the new strip 93 and the old strip 94 in its running direction; wherein the pre-cutting point refers to the position where the first pre-cutting die 511 and the second pre-cutting die 521 are approximately engaged during the process of pre-cutting the new strip 93 and the old strip 94 by the pre-cutting component 5.

[0077] When the first pre-cutting mold 511 and the second pre-cutting mold 521 are approximately engaged, if the first pre-cutting mold 511 and the second pre-cutting mold 521 are brought close to each other at a preset distance, the first pre-cutting mold 511 and the second pre-cutting mold 521 can actually engage; wherein the preset distance is less than the sum of the thicknesses of the new strip 83 and the old strip 84.

[0078] The splicing assembly 6 uses a single-sided tape 95 to splice the new strip 93 and the old strip 94 pre-cut by the pre-cut assembly 5. In one embodiment of the present application, see Figure 7 and Figure 8 , the splicing assembly 6 may include:

[0079] A first splicing piece 61 and a second splicing piece 62; the second splicing piece 62 is arranged opposite to the first splicing piece 61, and the minimum distance between the first splicing piece 61 and the second splicing piece 62 is less than the sum of the thicknesses of the new strip 93 and the old strip 94; a splicing power machine 63 is used to drive the first splicing piece 61 and / or the second splicing piece 62 to rotate. One splicing power machine 63 can be used to simultaneously drive the first splicing piece 61 and the second splicing piece 62 to rotate, for example, the first splicing piece 61 and the second splicing piece 62 are connected by a gear transmission, or two splicing power machines 63 can be used to respectively drive the first splicing piece 61 and the second splicing piece 62 to rotate.

[0080] The minimum distance between the second splicing piece 62 and the first splicing piece 61 is the distance between the meshing surfaces of the second splicing piece 62 and the first splicing piece 61 when they splice the new strip 93 and the old strip 94 during operation.

[0081] In one embodiment, the splicing motor 63 drives the first splicing piece 61 to rotate, and simultaneously drives the second splicing piece 62 to rotate via gears; the first splicing piece 61 and the second splicing piece 62 rotate in opposite directions. During operation, the minimum spacing between the first splicing piece 61 and the second splicing piece 62 is less than the sum of the thicknesses of the new strip 93 and the old strip 94. This facilitates forming a tension barrier between the new strip 93 and the old strip 94 upstream and downstream of the splicing point by the first splicing piece 61 and the second splicing piece 62. Furthermore, this facilitates the deceleration of the old unwinding assembly 2 to pull the rear end of the old strip 94 (i.e., the old strip 94 between the pre-cut end of the old strip 94 and the old material roll 92) off and removed, and the acceleration of the new strip 93 (i.e., the new strip 93 between the pre-cut end of the new strip 93 and the acceleration assembly 7) off and removed. The splicing point refers to the approximate meshing position of the first splicing piece 61 and the second splicing piece 62 during the process of splicing the new strip 93 and the old strip 94 by the splicing assembly 6.

[0082] The approximate engagement position in this embodiment has the same meaning as the approximate engagement position in the pre-cut component.

[0083] After the pre-cutting assembly 6 pre-cuts the new strip 93 and the old strip 94 , the splicing power machine 63 drives the first splicing piece 61 or the second splicing piece 62 to rotate to splice the new strip 93 and the old strip 94 .

[0084] In a specific embodiment, after the new strip 93 and the old strip 94 are pre-cut by the pre-cutting assembly 5 , the splicing power machine 63 drives the first splicing element 61 and / or the second splicing element 62 to rotate to splice the new strip 93 and the old strip 94 .

[0085] In a specific embodiment, the first splicing piece 61 has a first splicing mold 611; the second splicing piece 62 has a second splicing mold 621; at least one of the first splicing mold 611 and the second splicing mold 621 is provided with a negative pressure hole 621a on its surface for adsorbing the single-sided tape 95 for splicing the new tape 93 and the old tape 94.

[0086] In a specific example, negative pressure holes 621 a are provided on the surface of the second splicing mold 621 for adsorbing the single-sided tape 95 for splicing the new tape 93 and the old tape 94 .

[0087] The negative pressure hole 621 a may be opened on the surface of at least one of the first splicing mold 611 and the second splicing mold 621 .

[0088] During the splicing process, preferably, see Figure 8 When the new strip 93 and the old strip 94 pre-cut run to the splicing point of the splicing assembly 6 or before running to the splicing point, the actual running speed of the old unwinding assembly 2 is reduced to pull the rear end of the old strip 94 (that is, the old strip 94 between the pre-cut of the old strip 94 and the old material roll 92) off and removed from the pre-cut of the old strip 94; when the new strip 93 and the old strip 94 pre-cut run to the splicing point of the splicing assembly 6 or after running to the splicing point, the actual running speed of the acceleration assembly 7 is increased to pull the front end of the new strip 93 (that is, the new strip 93 between the pre-cut of the new strip 93 and the acceleration assembly 7) off and removed from the pre-cut of the new strip 93.

[0089] In one embodiment, the splicing assembly 6 is used to splice the head of the new strip 93 and the tail of the old strip 94 using a single-sided adhesive tape 95 to form a continuous strip.

[0090] The splicing assembly 6 includes a first splicing piece 61 , a second splicing piece 62 and a splicing power machine 63 ; wherein the first splicing piece 61 includes a first splicing mold 611 and a first splicing shaft 612 , and the second splicing piece 62 includes a second splicing mold 621 and a second splicing shaft 622 .

[0091] The first splicing mold 611 is disposed on the first splicing shaft 612 , and the second splicing mold 621 is disposed on the second splicing shaft 622 .

[0092] The splicing power machine 63 is connected to the first splicing shaft 612 and is used to drive the first splicing shaft 612 and / or the second splicing shaft 622 to rotate.

[0093] At least one of the first splicing mold 611 and the second splicing mold 621 is provided with a negative pressure hole 621a for adsorbing the single-sided tape 95 so as to splice the head of the new tape 93 and the tail of the old tape 94 during the splicing process to form a continuous tape.

[0094] The cross section of one of the first splicing mold 611 and the second splicing mold 621 perpendicular to the axial direction is fan-shaped, and the cross section of the other one perpendicular to the axial direction can be fan-shaped or circular.

[0095] Figure 9 A schematic diagram of a method for supplying a strip with a periodic pattern provided in one embodiment of the present application is shown in FIG. Figure 9 As shown, the method for supplying a strip with a periodic pattern according to this embodiment may include:

[0096] Step S10: Pull the old strip 94 out of the old material roll 92 installed on the old unwinding component 2, and convey it to the downstream packaging production equipment through the second identification component 4, the pre-cutting component 5, the splicing component 6 and the reference component 8.

[0097] The old strip 94 is pulled out from the old material roll 92 installed on the old unwinding component 2, and is transported to the downstream packaging production equipment through the second identification component 4, pre-cutting component 5, splicing component 6 and reference component 8 for use in production by the downstream packaging production equipment.

[0098] Step S20: Pull the new strip 93 out from the new material roll 91 installed on the new unwinding component 1, pass it through the first identification component 3, the pre-cutting component 5, the splicing component 6 and the acceleration component 7, and pull it through the acceleration component 7.

[0099] The new strip 93 is pulled out from the new material roll 91 installed on the new unwinding component 1, and passed through the first identification component 3, the pre-cutting component 5, and the splicing component 6 to the acceleration component 7, and is pulled by the acceleration component 7. When the old strip 94 needs to be switched to the new strip 93 for production by downstream packaging production equipment, the head of the new strip 93 and the tail of the old strip 94 are spliced ​​and then provided for production by the downstream packaging production equipment.

[0100] Step 30. When it is necessary to splice the new strip and the old strip, the running speed of the new strip 93 is accelerated to the same speed as the running speed of the old strip 94 or within the preset speed error range, and the new strip 93 and the old strip 94 are pre-cut at the same time using the pre-cut component 5 to form pre-cuts on the new strip 93 and the old strip 94 at the same time.

[0101] Before pre-cutting the new strip 93 and the old strip 94, the periodic pattern positioning information of the new strip 93 identified by the first recognition component 3 and the periodic pattern positioning information of the old strip 94 identified by the second recognition component 4 are used to control the displacement of the new strip 93 and the old strip 94 while the tension is maintained constant within a certain controlled range, so that the phase relationship of the periodic patterns on the new strip 93 and the old strip 94 relative to the pre-cutting point of the pre-cutting component 5 is the same or within a preset phase error range;

[0102] When it is necessary to splice the new strip 93 and the old strip 94, the acceleration component 7 and the new unwinding component 1 cooperate to accelerate the running speed of the new strip 93 from zero to the same running speed as the old strip 94 or within the preset speed error range, and the pre-cutting component 5 is used to pre-cut the new strip 93 and the old strip 94 at the same time to form pre-cuts on the new strip 93 and the old strip 94 at the same time, so as to reduce the tensile strength of the new strip 93 and the old strip 94 in their running direction at the pre-cuts on the new strip 93 and the old strip 94 respectively.

[0103] Step S40: Use the splicing assembly 6 to splice the new strip 93 and the old strip 94 pre-cut by the pre-cutting assembly 5, so that the new strip 93 and the old strip 94 form a continuous strip.

[0104] After the new strip 93 and the old strip 94 are pre-cut and pre-cut respectively by the pre-cutting assembly 5, the new strip 93 and the pre-cuts of the old strip 94 are synchronously run from the pre-cutting assembly 5 to the splicing assembly 6. After the pre-cuts of the new strip 93 and the old strip 94 run to the splicing assembly 6, the splicing assembly 6 splices the new strip 93 and the old strip 94 pre-cut by the pre-cutting assembly 5 to form a continuous strip. The supply method of this embodiment can be applied to the supply equipment of the previous embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0105] As an optional method, in a specific embodiment, step S20 includes:

[0106] Step S21 , pull the new strip 93 out from the new material roll 91 installed on the new unwinding component 1 , and pass it through the first identification component 3 , the pre-cutting component 5 , the splicing component 6 and the acceleration component 7 for winding.

[0107] The new strip 93 is pulled out manually or automatically from the new material roll 91 installed on the new unwinding component 1, and is wound through the first identification component 3, the pre-cutting component 5, the splicing component 6 and the acceleration component 7 to create conditions for subsequent process actions such as pre-tensioning of the new strip 93.

[0108] Step S22: Pre-tension the new strip 93 that has been wound by cooperating with the acceleration component 7 and the new unwinding component 1 to establish appropriate tension on the new strip 93 and ensure that the tension remains constant within a certain controlled range.

[0109] Step S23, after pre-tensioning is completed, the acceleration component 7 and the new unwinding component 1 work together to calculate the initial winding diameter of the new material roll 91 using the principle that the linear displacement of the acceleration component 7 and the new material roll 91 is equal, so that in the subsequent process, the operation of the acceleration component 7 and / or the new unwinding component 1 can be controlled according to the initial winding diameter of the new material roll 91.

[0110] Step S24: After the initial coil diameter of the new material roll 91 is determined, the acceleration component 7 and the new unwinding component 1 cooperate to make the new strip 93 run forward at a low speed while maintaining the tension established during the pre-tensioning process, until the first recognition component 3 recognizes the specified number of periodic pattern positioning information on the new strip 93, and then continues to run forward for the first preset displacement. The absolute phase is shifted and then stops to make necessary preparations for the subsequent absolute phase stitching.

[0111] As an optional method, in a specific embodiment, step S30 includes:

[0112] Step S31, real-time detection of the coil diameter of the old material roll 92 and / or detection of the material change mark at the tail end of the old strip 94. If the coil diameter of the old material roll 92 is detected to be lower than a preset coil diameter threshold and / or the material change mark at the tail end of the old strip 94 is detected, it is determined that the new strip and the old strip need to be spliced.

[0113] Step S32: The second recognition component 4 starts to recognize the periodic pattern positioning information of the old strip 94, and when the second recognition component 4 recognizes the periodic pattern positioning information of the specified number of old strips 94, monitors whether the displacement of the old strip 94 reaches the second preset displacement. .

[0114] Step S33: When the displacement of the old strip 94 reaches the second preset displacement When the speed of the new strip 93 is accelerated from zero to the same speed as the old strip 94 or within the preset speed error range by using the acceleration component 7 and the new unwinding component 1, and in the process of accelerating the speed of the new strip 93 from zero to the same speed as the old strip 94 or within the preset speed error range, the new strip 93 is controlled to run forward just at the fourth preset displacement. And the old strip 94 just runs forward the third preset displacement , so that the phase relationship of the periodic patterns on the new strip 93 and the old strip 94 relative to the pre-cut point of the pre-cut component 5 is the same or within a preset phase error range.

[0115] In this embodiment, after detecting that the coil diameter of the old material coil 92 is lower than a preset coil diameter threshold and / or detecting the material change mark at the end of the old strip 94, the second recognition component 4 detects the positioning information of the specified number of periodic patterns on the specified old strip 94, and the old strip 94 moves forward for the second preset displacement. After that, the new strip 93 begins to accelerate under the joint action of the acceleration component 7 and the new unwinding component 1, and in the process of the running speed of the new strip 93 accelerating from zero to the same running speed of the old strip 94 or within the preset speed error range, the displacement length of the new strip 93 is the fourth preset displacement length. At the same time, the displacement length of the old strip 94 is the third preset displacement , and the instantaneous displacement of the new strip 93 during the acceleration process Satisfies the following relationship:

[0116]

[0117] in, is the actual running time after the new strip 93 starts to accelerate ( ), Run the third preset displacement for old strip 94 The total time required, 、 、 、 、 、 For running the third preset displacement with the old strip 94 Total time required Related preset constants are used to ensure that hour, .

[0118] Step S34: The pre-cutting component 5 simultaneously pre-cuts the new strip 93 and the old strip 94 at the same speed or within a preset speed error range.

[0119] During the process of accelerating the running speed of the new strip 93 from zero to the same running speed as the old strip 94 or within the preset speed error range, the pre-cutting assembly 5 is started so that when the running speed of the new strip 93 is just accelerated from zero to the same running speed as the old strip 94 or within the preset speed error range, the pre-cutting knife 511a and the let-down knife 521a are just engaged, and the new strip 93 and the old strip 94 are pre-cut simultaneously, so as to simultaneously form pre-cuts consisting of a plurality of discontinuous holes arranged at designated positions of a periodic pattern on the new strip 93 and the old strip 94; or,

[0120] During the process of accelerating the running speed of the new strip 93 from zero to the same running speed as the old strip 94 or within the preset speed error range, or after the running speed of the new strip 93 is accelerated from zero to the same running speed as the old strip 94 or within the preset speed error range, the pre-cutting component 5 is started to accelerate the running speed of the new strip 93 from zero to the same running speed as the old strip 94 or within the preset speed error range. When the new strip 93 and the old strip 94 run forward together for the fifth preset displacement, the pre-cutting knife 511a and the let-down knife 521a just engage and pre-cut the new strip 93 and the old strip 94 at the same time, so as to simultaneously form a pre-cut formed by a plurality of discontinuous holes at the specified position of a periodic pattern on the new strip 93 and the old strip 94.

[0121] Furthermore, the tensile strength of the new tape 93 and the old tape 94 are respectively reduced at the pre-cuts, and then the pre-cuts on the new tape 93 and the old tape 94 run toward the splicing assembly 6 synchronously.

[0122] The tensile force that the corresponding positions of the new tape 93 and the old tape 94 with reduced tensile strength (i.e., the pre-cut edges of the new tape 93 and the old tape 94) can withstand is less than the inherent ultimate tensile force that the new tape 93 and the old tape 94 can withstand, and is greater than the tensile force applied to the tape during the process of providing the tape to the packaging production equipment.

[0123] As an optional method, in a specific embodiment, step S40 includes:

[0124] Step S41, when the pre-cuts on the new strip 93 and the old strip 94 have not yet run to the splicing assembly 6, start the splicing assembly 6, and when the first splicing mold 611 and the second splicing mold 621 just start splicing (such as just meshing) or before starting splicing (such as meshing), accelerate the first splicing mold 611 and the second splicing mold 621 to the same running speed as the new strip 93 and the old strip 94 or within the preset speed error range, and then the first splicing mold 611 and the second splicing mold 621 are spliced ​​(such as meshing to achieve splicing), and a tension barrier is formed upstream and downstream of the new strip 93 and the old strip 94 passing through the splicing assembly 6.

[0125] In step S42, before or after the first splicing mold 611 and the second splicing mold 621 form a tension barrier on the new strip 93 and the old strip 94 passing through the splicing component 6 upstream and downstream, the old unwinding component 2 slows down, and after the first splicing mold 611 and the second splicing mold 621 form a tension barrier on the new strip 93 and the old strip 94 passing through the splicing component 6 upstream and downstream, and when the pre-cut on the old strip 94 is about to run to the splicing point of the splicing component or just runs to the splicing point, the rear end of the old strip 94 (that is, the old strip 94 between the pre-cut of the old strip 94 and the old material roll 92) is pulled off and removed.

[0126] Step S43, the splicing assembly 5 drives the single-sided tape 95 located on the negative pressure hole 621a to rotate, so that the first adhesive portion of the single-sided tape 95 is adhered to the old tape 94 on the downstream side of the pre-cut of the old tape 94, and the center position of the single-sided tape 95 is basically aligned with the pre-cut position of the new tape 93 and the old tape 94.

[0127] Step S44: When the pre-cut edge of the new strip 93 is about to pass through the splicing point or just passes through the splicing point, the acceleration component 7 accelerates, and when the pre-cut edge of the new strip 93 just passes through the splicing point, or after the pre-cut edge of the new strip 93 passes through the splicing point, the front end of the new strip 93 (i.e., the new strip 93 between the pre-cut edge of the new strip 93 and the acceleration component 7) is pulled off and removed.

[0128] Step S45 , the splicing assembly 5 drives the single-sided tape 95 located on the negative pressure hole 621 a to continue rotating, so that the second adhesive portion of the single-sided tape 95 is adhered to the new tape 93 on the upstream side of the pre-cut of the new tape 93 .

[0129] At this point, the head of the new strip 93 and the tail of the old strip 94 are spliced ​​together by the single-sided tape 95 to form a continuous strip from the new material roll 91 to the reference component 8, further completing the purpose of conveying the new strip 93 to the downstream packaging production equipment.

[0130] As an optional manner, in a specific embodiment, the order of step S42 and step S43 may not be distinguished; the order of step S44 and step S45 may not be distinguished.

[0131] In this embodiment, when it is determined based on the identification information of the first identification component 3 and the second identification component 4 that the phase relationship of the periodic patterns on the new strip 93 and the old strip 94 relative to the pre-cutting component 5 is exactly the same or within the preset phase error range, the new strip 93 and the old strip 94 are pre-cut. After the pre-cutting component 5 pre-cuts the new strip 93 and the old strip 94, the splicing component 6 cooperates with the acceleration component 7, the new unwinding component 1 and the old unwinding component 2 to splice the new strip 93 and the old strip 94 through the single-sided tape 95 to form a continuous strip from the new material roll 91 to the reference component 8, thereby continuously providing strip to the downstream packaging production equipment. In this process, the packaging production equipment does not need to slow down or stop, thereby improving the production efficiency of the packaging production equipment.

[0132] The supply method of the above embodiment can be applied to the technical solution of the embodiment of the above supply equipment. Its implementation principle and technical effects are similar and will not be repeated here.

[0133] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0134] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0135] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A supply device for a strip with a periodic pattern, characterized in that: include: A new unwind assembly for installing a new roll of material and releasing new strip; An old unwinding assembly for installing an old material roll and releasing the old strip; A first identification component is provided on the running path of the new strip and is used to identify the periodic pattern positioning information of the new strip; A second identification component is provided on the running path of the old strip and is used to identify the periodic pattern positioning information of the old strip; A pre-cutting assembly is provided on the running path of the new strip and the old strip, and is used to pre-cut the new strip and the old strip passing through the pre-cutting assembly at the same time, so as to reduce the tensile strength of the new strip and the old strip at the same time; A splicing assembly is provided on the running path of the new strip and the old strip and is located downstream of the pre-cutting assembly, and is used to splice the new strip and the old strip pre-cut by the pre-cutting assembly using a single-sided adhesive tape so that the new strip and the old strip form a continuous strip; An acceleration assembly, disposed downstream of the splicing assembly, for pulling a new strip from the new strip roll and hauling it; A reference assembly for pulling the old strip from the old material roll and conveying it to downstream packaging production equipment; In which, the supply equipment is configured to: before pre-cutting the new strip and the old strip, based on the periodic pattern positioning information of the new strip and the old strip identified by the first identification component and the second identification component, control the displacement of the new strip and the old strip while maintaining the tension constant within a certain controlled range through the new unwinding component, the old unwinding component, the acceleration component, and the reference component, so that the phase relationship of the periodic patterns on the new strip and the old strip relative to the pre-cutting point of the pre-cutting component is the same or within a preset phase error range.

2. The supply device according to claim 1, characterized in that The positions of the pre-cutting assembly, the splicing assembly, and the accelerating assembly are relatively fixed, and there is no other component in the combination of the three that changes the running path of the new strip, so that the running path of the new strip when passing through the combination of the pre-cutting assembly, the splicing assembly, and the accelerating assembly remains unchanged; The reference assembly is located upstream of the pre-cutting assembly, or between the splicing assembly and the pre-cutting assembly, or downstream of the splicing assembly; the positions of the pre-cutting assembly, the splicing assembly, and the reference assembly are relatively fixed, and there is no other component in the combination of the three that changes the running path of the old strip, so that the running path of the old strip when passing through the combination of the pre-cutting assembly, the splicing assembly, and the reference assembly remains unchanged; The first recognition component is fixedly arranged on the new strip running path upstream or downstream of the combination of the pre-cutting component, the splicing component, and the accelerating component, or in the combination of the three, and does not contact the new strip, so that the new strip running path between the first recognition component and the pre-cutting point of the pre-cutting component remains unchanged; The second identification component is fixedly arranged on the old strip running path upstream or downstream of the combination of the pre-cutting component, the splicing component, and the reference component, or in the combination of the three, and does not contact the old strip, so that the old strip running path between the second identification component and the pre-cutting point of the pre-cutting component remains unchanged.

3. The supply device according to claim 1, characterized in that The pre-cutting assembly pre-cuts the new and old strips to form pre-cuts, thereby reducing the tensile strength of the new and old strips at the pre-cuts, and ensuring that the tensile force that the new and old strips can withstand after the tensile strength is reduced is less than the inherent ultimate tensile force that the new and old strips can withstand, and is greater than the tensile force applied to the strips during the process of supplying the strips to downstream packaging production equipment.

4. The supply device according to claim 1, characterized in that After the new unwinding assembly is installed with a new material roll, the acceleration assembly and the new unwinding assembly cooperate to pre-tension the new strip and control the new strip to continue to run forward at a low speed after the pre-tensioning is completed until the first recognition assembly recognizes the periodic pattern positioning information of the specified number of new strips, so that the new strip moves forward again for the first preset displacement. Then stop; When the supply device determines that the new strip and the old strip need to be spliced, from the moment when the second recognition component recognizes the periodic pattern positioning information of the specified number of old strips, the reference component monitors whether the displacement of the old strip reaches the second preset displacement. ; When the second preset displacement is reached When the speed of the new strip is accelerated from zero to the same speed as the old strip or within the preset speed error range, the acceleration component and the new unwinding component cooperate to accelerate the running speed of the new strip from zero to the same speed as the old strip or within the preset speed error range, and in the process of accelerating the running speed of the new strip from zero to the same speed as the old strip or within the preset speed error range, the new unwinding component, the old unwinding component, the acceleration component and the reference component respectively control the new strip to run forward just to the fourth preset displacement And the old strip just runs forward the third preset displacement , so that the phase relationship of the periodic patterns on the new strip and the old strip relative to the pre-cut point of the pre-cut component is the same or within a preset phase error range.

5. The supply device according to claim 4, characterized in that When the running speed of the new strip is accelerated from zero to the same as that of the old strip or within the preset speed error range, or after the running speed of the new strip is accelerated from zero to the same as that of the old strip or within the preset speed error range, the new strip and the old strip are controlled by the new unwinding assembly, the old unwinding assembly, the acceleration assembly, and the reference assembly to continue to run forward synchronously. After the fifth preset displacement, the pre-cutting assembly pre-cuts the new strip and the old strip at the same time so that the pre-cuts on the new strip and the old strip are respectively located at specified positions of a periodic pattern on the new strip and the old strip.

6. The supply device according to claim 1, characterized in that The pre-cutting component pre-cuts the new strip and the old strip. After pre-cuts are formed on the old strip and the new strip at the same time, the splicing component drives the single-sided tape to rotate, so that the first adhesive portion of the single-sided tape is adhered to the old strip on the downstream side of the pre-cut, and the old unwinding component slows down and pulls the tail end of the old strip off from the pre-cut; the second adhesive portion of the single-sided tape is adhered to the new strip on the upstream side of the pre-cut, and the accelerating component accelerates and pulls the head end of the new tape off from the pre-cut.

7. The supply device according to claim 1, characterized in that The pre-cut assembly comprises: First pre-cut piece; a second pre-cut piece, the second pre-cut piece being arranged opposite to the first pre-cut piece, and a minimum distance between the second pre-cut piece and the first pre-cut piece being less than the sum of the thicknesses of the new strip and the old strip; A pre-cutting power machine, used for driving the first pre-cut piece and / or the second pre-cut piece to rotate; The phase relationship between the periodic patterns on the new strip and the old strip relative to the pre-cutting point of the pre-cutting component is the same or within a preset phase error range, or when a specified position of a periodic pattern on the new strip and the old strip just runs to the pre-cutting point, the pre-cutting power machine drives the first pre-cutting part and / or the second pre-cutting part to rotate to pre-cut the new strip and the old strip.

8. The supply device according to claim 7, characterized in that The first pre-cut piece has a first pre-cutting die; the second pre-cut piece has a second pre-cutting die; The minimum distance between the second pre-cutting die and the first pre-cutting die is less than the sum of the thicknesses of the new strip and the old strip; The top surface of the first pre-cutting mold is provided with a pre-cutting knife; the top surface of the second pre-cutting mold is provided with a knife groove adapted to the pre-cutting knife; The pre-cutter includes a plurality of discontinuous fork teeth, and the knife groove includes a plurality of discontinuous clearance holes that engage with the fork teeth in the pre-cutter, so that the pre-cutting component pre-cuts the new strip and the old strip to form a pre-cut on the new strip and the old strip composed of a plurality of discontinuous holes.

9. The supply device according to claim 1, characterized in that The splicing assembly includes: First splicing piece; a second splicing piece, the second splicing piece being arranged opposite to the first splicing piece, and a minimum distance between the first splicing piece and the second splicing piece being smaller than the sum of the thicknesses of the new strip and the old strip; A splicing power machine, used for driving the first splicing piece and / or the second splicing piece to rotate; After the pre-cutting assembly pre-cuts the new strip and the old strip, the splicing power machine drives the first splicing piece or the second splicing piece to rotate to splice the new strip and the old strip.

10. The supply device according to claim 9, characterized in that The first splicing piece has a first splicing mold; The second splicing piece has a second splicing mold; A negative pressure hole is provided on the surface of at least one of the first splicing mold and the second splicing mold for absorbing the single-sided tape used to splice the new tape and the old tape.

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