A kind of strapping production method and assembly line

Abstract

The present invention discloses a strapping tape production method and an assembly line thereof, wherein the strapping tape production method comprises the following steps: step 1: the core wires on each wire drum are arranged horizontally and parallelly for transportation, and are heated during transportation so that the surface of the core wires melts and becomes semi-solid; step 2: the transported core wires are extruded so that adjacent core wires are close to each other and adhere to each other, and are cooled by blowing air so that each core wire adheres to form an inner core strip in sequence; step 3: the material is heated and melted by an extruder and then wrapped on the transported inner core strip to form a strapping tape, and is cooled by water cooling; step 4: the cooled strapping tape is rolled up on a reel, and the reel is switched after the rolling is completed, so that the rolling strapping tape and the reel recovery can be carried out simultaneously. The present invention can improve the functionality of the finished strapping tape while also appropriately reducing the manufacturing cost of the functional strapping tape and improving the production efficiency of the strapping tape.

Description

Technical Field

[0001] The invention relates to the field of strapping tape manufacturing, and in particular to a strapping tape production method and an assembly line thereof. Background Art

[0002] Conventional strapping tape is mostly formed by extrusion. The plastic is heated and melted by an extruder, and then the melted plastic is pressed into a strip by a belt press. The strip plastic is then stretched into shape by a molding machine and then cooled and shaped. Finally, the cooled strapping tape is wound into a roll.

[0003] The strapping tape produced by this method has limited functionality (such as wear resistance, tensile strength, temperature resistance, etc.) due to the single material. The use of an extruder to process the raw materials mixed with functional materials will result in uneven mixing, which will affect the functional effect of the strapping tape. If the strapping tape is produced entirely with functional materials, the manufacturing cost of the strapping tape will be greatly increased. Although there are secondary processing methods on the produced strapping tape to improve the functionality of the strapping tape, such as coating the surface of the strapping tape with a thin layer of zinc to produce galvanized strapping tape that can prevent rust, and blackening the surface of the strapping tape to form a dense oxide film to improve the wear resistance of the strapping tape, the need for secondary processing greatly increases the complexity of the strapping tape manufacturing process. Summary of the invention

[0004] The object of the present invention is to provide a strapping tape production method and an assembly line thereof, which can improve the functionality of the finished strapping tape while also appropriately reducing the manufacturing cost of the functional strapping tape and improving the production efficiency of the strapping tape.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A method for producing a packing tape comprises the following steps:

[0007] Step 1: The core wires on each wire barrel are transported in a horizontal and parallel arrangement, and are heated during the transport process so that the surface of the core wire melts and becomes a semi-solid state;

[0008] Step 2: Extrude the delivered core wires so that adjacent core wires are close to each other and adhere to each other, and cool them by blowing air so that the core wires adhere to each other in turn to form an inner core strip;

[0009] Step 3: The material is heated and melted by an extruder and then wrapped on the conveying inner core strip to form a packing tape, which is then cooled by water cooling;

[0010] Step 4: Wind the cooled strapping tape onto the reel, and switch the reel after winding is completed, so that the strapping tape winding and reel recovery can be carried out simultaneously.

[0011] As a further improvement of the above technical solution, in the step 2, the top and bottom surfaces of the formed inner core strip are scraped flat during the conveying process.

[0012] The present invention also provides an assembly line for producing a strapping tape based on any one of the above technical solutions, comprising:

[0013] A guide assembly, used for guiding the core wires on a plurality of wire drums to be transported in a horizontal direction in a parallel arrangement;

[0014] A molding assembly, which is used to make the surfaces of the core wires all in a molten state and to adhere them in sequence to form an inner core strip;

[0015] A core wrapping assembly, which is used to wrap the outer shell on the inner core strip to form a packing tape;

[0016] A winding component, used for winding the packing tape;

[0017] Wherein, the winding assembly includes two reels, and the two reels are used to alternately wind up the packing tape through a switching mechanism.

[0018] As a further improvement of the above technical solution, the guide assembly includes a bracket, the bracket is provided with a plurality of extension rods for placing the wire bobbin, the wire bobbin is sleeved on the extension rods and cannot rotate, a first guide wheel unit and a plurality of second guide wheel units are provided on the machine body, the second guide wheel unit is located between the first guide wheel unit and the bracket, the first guide wheel unit includes a plurality of first guide wheels, the first guide wheels are rotatably connected to the machine body, the first guide wheels are arranged in a straight line in the horizontal direction in sequence, and a first guide channel for guiding the core wire transportation is formed between adjacent first guide wheels, the second guide wheel unit includes two second guide wheels, the second guide wheels are rotatably connected to the machine body, a first drive motor for driving any one of the two second guide wheels to rotate is installed on the machine body, the two guide wheels are arranged up and down, and a second guide channel for guiding the core wire transportation is formed between the two, and there is a one-to-one correspondence between the first guide channels and the second guide channels.

[0019] As a further improvement of the above technical solution, the extension rod is provided with an L-shaped lead frame, the transverse section of the lead frame is inserted along the axial direction of the extension rod and rotatably connected to the extension rod, a second drive motor for driving the lead frame to rotate relative to the extension rod is installed on the bracket, and a lead ring for the core wire to pass through is provided on the longitudinal section of the lead frame.

[0020] As a further improvement of the above technical solution, the molding assembly includes a heating seat and an extrusion seat, both of which can be detachably installed on the machine body, a heating cavity is provided on the heating seat and a first conveying channel for horizontally conveying the core wire is provided along the axial direction of the heating cavity, an electric heating device is installed in the heating cavity, the heating area of ​​the electric heating device is located on the trajectory of horizontal conveying of the core wire, an extrusion cavity is provided on the extrusion seat and a second conveying channel for horizontally conveying the core wire is provided along the axial direction of the extrusion cavity, two extrusion blocks are horizontally slidingly arranged in the extrusion cavity, the two extrusion blocks are symmetrically arranged relative to the second conveying channel, a driving device for driving the two extrusion blocks to move synchronously in opposite directions and a fan for cooling the inner core strip are installed on the extrusion seat, and the conveying trajectory of the core wire is located in the blowing direction of the fan.

[0021] As a further improvement of the above technical solution, a leveling assembly is provided between the molding assembly and the core wrapping assembly, and the leveling assembly includes a leveling seat, a leveling cavity is provided on the leveling seat, and a third conveying channel for horizontally conveying the inner core strip is provided along the axial direction of the leveling cavity, and two scrapers are provided in the leveling cavity, which are arranged vertically and obliquely relative to the inner core strip, and the distance between the blades of the two scrapers is smaller than the caliber of the third conveying channel.

[0022] As a further improvement of the above technical solution, the core wrapping assembly includes a core wrapping seat and an extruder. The core wrapping seat is detachably mounted on the machine body. A core wrapping cavity is provided on the core wrapping seat and a fourth conveying channel for horizontally conveying the inner core strip is provided along the axial direction of the core wrapping cavity. A through hole is provided on the core wrapping cavity for communicating with the discharge port of the extruder. A cooling water trough is provided on the machine body for cooling and shaping the inner core strip output from the core wrapping cavity.

[0023] As a further improvement of the above technical solution, the switching mechanism includes a rotating seat, which is rotatably arranged on the machine body, and a third drive motor is installed on the machine body for driving the rotating seat to rotate relative to the machine body. Rotating rods are rotatably arranged at two relative positions on the rotating seat, and the two reels are respectively mounted and fixed on the two rotating rods. A fourth drive motor is installed on the rotating seat for driving the rotating rods to rotate relative to the rotating seat. When the rotating seat and the machine body are in a relatively fixed state, the two reels are on the same vertical line.

[0024] As a further improvement of the above technical solution, the winding assembly also includes a changing unit for changing the packing tape from horizontal linear conveying to vertical linear conveying, a cutting unit for cutting the packing tape and two limiting units for limiting the packing tape from detaching from the reel. The changing unit includes a changing seat and two changing wheels. The changing seat is horizontally slidably arranged on the machine body. A first linear drive device for driving the changing seat to slide relative to the machine body is installed on the machine body. The moving direction of the changing seat is perpendicular to the conveying direction of the packing tape. The two changing wheels are both rotatably connected to the changing seat and a gap is provided between the two changing wheels for the packing tape to pass through. A fifth driving motor for driving any one of the two changing wheels to rotate is installed on the changing seat. When the packing tape is passed through the gap, the packing tape is clamped between the two changing wheels. The cutting unit is located directly below the changing unit. The cutting unit includes a cutting knife, which is horizontally slidably arranged The machine body is provided with a second linear drive device for driving the cutting knife to slide relative to the machine body, and the moving direction of the cutting knife is perpendicular to the conveying direction of the packing tape. A limit block is provided on the machine body, and the limit block is located on the moving track of the cutting knife and is provided with a groove for accommodating the blade of the cutting knife. The two limiting units are located directly below the cutting unit, and the limiting units correspond to the reel one by one. The limiting unit includes a driving seat and a resisting seat, and the driving seat is rotatably arranged on the rotating seat. A sixth driving motor for driving the driving seat to rotate relative to the rotating seat is installed on the rotating seat, one end of the resisting seat is hinged to the center position of the driving seat and a torsion spring is provided between the two for applying a force to the resisting seat against the packing tape, and an adhesive tape is provided on the side of the reel along its axial direction, and protrusions are provided on the driving seat and the resisting seat, and the other end of the resisting seat is cylindrical and when it resists on the reel, the two protrusions contact and resist.

[0025] Compared with the prior art, the present invention has the following advantages and effects:

[0026] (1) The present invention realizes the effect of composite production of strapping tape using different materials (i.e., the inner core strip and the outer shell of different materials are combined), thereby improving the functionality of the strapping tape and appropriately reducing the manufacturing cost of the functional strapping tape, and reducing the process flow of secondary processing of the strapping tape after forming and winding, thereby ensuring the production efficiency of the strapping tape.

[0027] (2) The present invention overlaps the forming strapping tape winding operation and the strapping tape recycling operation in the strapping tape production process, thereby reducing the impact of the recycling operation on the continuity of strapping tape production and shortening the strapping tape production time, thereby improving manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a packaging tape production method according to an embodiment of the present invention.

[0029] Figure 2 It is a structural schematic diagram of a packaging tape production line according to Embodiment 2 of the present invention.

[0030] Figure 3 yes Figure 1 A schematic structural diagram of a partial guide assembly is shown in FIG.

[0031] Figure 4 yes Figure 1 A schematic structural diagram of a partial second guide assembly is shown in FIG.

[0032] Figure 5 yes Figure 1 A schematic structural diagram of a partial molding component is shown in FIG.

[0033] Figure 6 yes Figure 5 A schematic diagram of the partial structure inside the heating seat is shown in FIG.

[0034] Figure 7 yes Figure 1 The structural schematic diagram of the partial second molding component is shown in FIG.

[0035] Figure 8 yes Figure 7 A schematic diagram of the partial structure inside the extrusion seat is shown in FIG.

[0036] Fig. 9 yes Figure 1 A schematic structural diagram of a partial core assembly is shown in FIG.

[0037] Fig.10 yes Fig. 9 A schematic diagram of the structure of a local core seat is shown in FIG.

[0038] Fig.11 yes Figure 1 A schematic structural diagram of a partial winding assembly is shown in FIG.

[0039] Fig.12 yes Fig.11 The structural schematic diagram of the direction-changing unit is shown in FIG.

[0040] Fig.13 yes Fig.11 The structural schematic diagram of the switching mechanism from perspective one is shown in FIG.

[0041] Fig.14 yes Fig.11 The structural schematic diagram of the switching mechanism from perspective 2 is shown in FIG.

[0042] Among them, the guide component 1, the bracket 11, the extension rod 12, the first guide wheel unit 13, the second guide wheel unit 14, the first guide wheel 15, the first guide channel 16, the second guide wheel 17, the first drive motor 18, the second guide channel 19, the molding component 2, the heating seat 21, the extrusion seat 22, the heating cavity 23, the first conveying channel 24, the electric heating device 25, the extrusion cavity 26, the second conveying channel 27, the extrusion block 28, the driving device 281, the fan 29, the core assembly 3, the core seat 31, the extruder 32, the core cavity 33, the fourth conveying channel 34, the cooling water tank 35, the winding component 4, the reel 41, the change unit 42, the cutting unit 4 3, limiting unit 44, switching mechanism 5, rotating seat 51, third drive motor 52, rotating rod 53, fourth drive motor 54, lead frame 6, second drive motor 61, lead ring 62, leveling assembly 7, leveling seat 71, leveling chamber 72, third conveying channel 73, scraper 74, change seat 81, first linear drive device 811, change wheel 82, fifth drive motor 821, cutting knife 83, second linear drive device 831, limit block 84, groove 85, drive seat 86, sixth drive motor 861, against seat 87, adhesive tape 88, protrusion 89, wire drum 91, core wire 92, inner core strip 93, packing tape 94, machine body 95. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0044] Embodiment 1.

[0045] See also Figure 1 The present embodiment provides a method for producing a strapping tape, comprising the following steps:

[0046] Step 1: The core wires on each wire barrel are transported in a horizontal and parallel arrangement, and are heated during the transport process so that the surface of the core wire melts and becomes a semi-solid state;

[0047] Step 2: Extrude the delivered core wires so that adjacent core wires are close to each other and adhere to each other, and cool them by blowing air so that the core wires adhere to each other in turn to form an inner core strip;

[0048] Step 3: The material is heated and melted by an extruder and then wrapped on the conveying inner core strip to form a packing tape, which is then cooled by water cooling;

[0049] Step 4: Wind the cooled strapping tape onto the reel, and switch the reel after winding is completed, so that the strapping tape winding and reel recovery can be carried out simultaneously.

[0050] In this embodiment, in step 2, the top and bottom surfaces of the formed inner core strip are scraped flat during the conveying process, thereby reducing the influence of protrusions formed by adhesion between the core wires on the molding quality of the subsequent outer shell on the inner core strip.

[0051] Embodiment 2.

[0052] See also Figure 2-Figure 13 , an assembly line based on the strapping tape production method of embodiment 1, comprising:

[0053] A guide assembly 1, which is used to guide the core wires on a plurality of wire drums to be transported in a horizontal direction in a parallel arrangement;

[0054] A molding component 2, which is used to make the surfaces of the core wires all in a molten state and to adhere them in sequence to form an inner core strip;

[0055] The core wrapping assembly 3 is used to wrap the outer shell on the inner core strip to form a packing tape;

[0056] A winding component 4, which is used to wind up the packing tape;

[0057] The winding assembly 4 includes two reels 41 , and the two reels 41 are used to alternately wind up the strapping tape through a switching mechanism 5 .

[0058] See also Figure 3 , Figure 4 The guide assembly 1 includes a bracket 11, on which are provided a plurality of extension rods 12 for placing the bobbin, the bobbin is sleeved on the extension rods 12 and cannot rotate, a first guide wheel unit 13 and a plurality of second guide wheel units 14 are provided on the machine body, the second guide wheel unit 14 is located between the first guide wheel unit 13 and the bracket 11, the first guide wheel unit 13 includes a plurality of first guide wheels 15, the first guide wheels 15 are rotatably connected to the machine body, each first guide wheel 15 is arranged in a straight line in the horizontal direction, and a first guide channel 16 for guiding the core wire transportation is formed between adjacent first guide wheels 15, the second guide wheel unit 14 includes two second guide wheels 17, the second guide wheel 17 is rotatably connected to the machine body, a first drive motor 18 for driving any one of the two second guide wheels 17 to rotate is installed on the machine body, the two guide wheels are arranged up and down, and a second guide channel 19 for guiding the core wire transportation is formed between the two, and each first guide channel 16 and the second guide channel 19 correspond to each other one by one.

[0059] When the core wires on the wire drum are transported, the core wires on each wire drum pass through the two second guide wheels 17 of the corresponding second guide wheel unit 14 through the second guide channel 19, and combined with the driving effect of the first drive motor 18 on the second guide wheel 17, the second guide wheel unit 14 restricts the core wire conveying direction to guide each core wire to be on the same horizontal plane and transport it horizontally to the first guide wheel unit 13, and then each horizontally transported core wire passes through the corresponding first guide channel 16 between the two adjacent first guide wheels 15, so that the first guide wheel unit 13 restricts the core wire conveying direction to make each core wire be transported in a horizontal and parallel arrangement, while ensuring the convenience of subsequent unified processing of the core wires, it also reduces the requirements for the placement space of the wire drum due to the need for core wire arrangement and transportation.

[0060] The first guide wheel unit 13 may be provided in plurality, thereby ensuring that each core wire is transported in parallel in the horizontal direction. Meanwhile, the second guide wheels 17 at the same height in each second guide wheel unit 14 may be sleeved and fixed on the output shaft of the first drive motor 18, so that a single first drive motor 18 can drive each second guide wheel unit 14 to transport the core wire thereon.

[0061] See also Figure 3 The extension rod 12 is provided with an L-shaped lead frame 6, the transverse section of the lead frame 6 is inserted along the axial direction of the extension rod 12 and rotatably connected to the extension rod 12, and the bracket 11 is equipped with a second driving motor 61 for driving the lead frame 6 to rotate relative to the extension rod 12, and the longitudinal section of the lead frame 6 is provided with a lead ring 62 for the core wire to pass through.

[0062] During the process of outputting the core wire from the bobbin, the lead frame 6 is driven by the second drive motor 61 to rotate the lead frame 6 relative to the bracket 11, thereby guiding the core wire to be wound out of the bobbin via the lead ring 62, thereby reducing the risk of the core wire breaking due to directly pulling the core wire out of the bobbin.

[0063] In this embodiment, the transverse section of the lead frame 6 is inserted and detachably mounted on the output shaft of the second drive motor 61 through a snap-fit ​​structure, so that the bobbin on the bracket 11 can be replaced by disassembling the lead frame 6 .

[0064] See also Figure 5-Figure 8The molding assembly 2 includes a heating seat 21 and an extrusion seat 22. Both the heating seat 21 and the extrusion seat 22 can be detachably mounted on the machine body. A heating chamber 23 is provided on the heating seat 21, and a first conveying channel 24 for horizontally conveying the core wire is provided along the axial direction of the heating chamber 23. An electric heating device 25 (such as a heating tube, a heating plate, etc.) is installed in the heating chamber 23. The heating area of ​​the electric heating device 25 is located on the trajectory of horizontal conveying of the core wire. An extrusion chamber 26 is provided on the extrusion seat 22, and a second conveying channel 27 for horizontally conveying the core wire is provided along the axial direction of the extrusion chamber 26. Two extrusion blocks 28 are horizontally slidably arranged in the extrusion chamber 26, and the two extrusion blocks 28 are symmetrically arranged relative to the second conveying channel 27. A driving device 281 for driving the two extrusion blocks 28 to move synchronously in opposite directions and a fan 29 for cooling the inner core strip are installed on the extrusion seat 22. The conveying trajectory of the core wire is located in the blowing direction of the fan 29.

[0065] When each core wire is transported through the heating chamber 23 via the first conveying channel 24, the electric heating device 25 heats the core wire so that the surface of the core wire melts and changes from solid to semi-solid. Subsequently, when the heated core wire is transported through the extrusion chamber 26 via the second conveying channel 27, the driving device 281 drives the two extrusion blocks 28 to approach each other, so that adjacent core wires can be close to and contact each other under the extrusion of the two extrusion blocks 28, so that the core wires can adhere together to form an inner core strip under the cooling effect of the fan 29.

[0066] In this embodiment, the driving device 281 is a dual-axis motor, and the two extrusion blocks 28 are respectively sleeved on the two output shafts of the dual-axis motor in a threaded manner, and the threads on the two output shafts are in opposite directions.

[0067] See also Fig. 9 , Fig.10 A leveling component 7 is provided between the molding component 2 and the core wrapping component 3. The leveling component 7 includes a leveling seat 71. A leveling cavity 72 is provided on the leveling seat 71, and a third conveying channel 73 for horizontally conveying the inner core strip is provided along the axial direction of the leveling cavity 72. Two scrapers 74 are provided in the leveling cavity 72, which are arranged up and down. The scrapers 74 are inclined relative to the inner core strip, so that the blade can guide the scraped waste away from the inner core strip while leveling the inner core strip. The distance between the blades of the two scrapers 74 is smaller than the diameter of the third conveying channel 73.

[0068] When the inner core strip is conveyed through the flattening chamber 72 via the third conveying channel 73, the two scrapers 74 can respectively flatten the top and bottom surfaces of the inner core strip, thereby reducing the influence of the protrusions formed by the adhesion between the core wires on the subsequent molding quality of the outer shell on the inner core strip.

[0069] See also Fig. 9 , Fig.11 The core wrapping assembly 3 includes a core wrapping seat 31 and an extruder 32. The core wrapping seat 31 is detachably mounted on the machine body. A core wrapping cavity 33 is provided on the core wrapping seat 31, and a fourth conveying channel 34 for horizontally conveying the inner core strip is provided along the axial direction of the core wrapping cavity 33. A through hole for communicating with the discharge port of the extruder 32 is provided on the core wrapping cavity 33. A cooling water trough 35 is provided on the machine body for cooling and shaping the inner core strip output from the core wrapping cavity 33.

[0070] During the process of the inner core strip being conveyed through the core wrapping cavity 33 via the fourth conveying channel 34, the extruder 32 heats and melts the material and conveys it into the core wrapping cavity 33 via the through hole. When the inner core strip is output from the core wrapping cavity 33, the material in a molten state can be wrapped around the inner core strip and output together, and after entering the cooling water trough 35 for cooling and shaping, an outer shell is formed that wraps and fixes the inner core strip, thereby completing the production of the strapping tape.

[0071] See also Figure 11-13 The switching mechanism 5 includes a rotating seat 51, which is rotatably arranged on the machine body. A third driving motor 52 is installed on the machine body for driving the rotating seat 51 to rotate relative to the machine body. Rotating rods 53 are rotatably arranged at two opposite positions on the rotating seat 51. The two reels 41 are respectively sleeved and fixed on the two rotating rods 53. A fourth driving motor 54 is installed on the rotating seat 51 for driving the rotating rods 53 to rotate relative to the rotating seat 51. When the rotating seat 51 and the machine body are in a relatively fixed state, the two reels 41 are on the same vertical line.

[0072] When the two reels 41 need to be switched, the third drive motor 52 drives the rotating seat 51 to rotate relative to the machine body, so that the position of the two reels 41 is switched, so that the reel 41 on one rotating rod 53 can be wound up with the strapping tape while the reel 41 on the other rotating rod 53 that has been wound up with the strapping tape is removed, thereby ensuring the continuity of the strapping tape winding operation and allowing the processes in the winding operation to be overlapped, thereby improving the efficiency of the operation.

[0073] When the strapping tape is wound up, the fourth driving motor 54 drives the rotating rod 53 to rotate relative to the rotating seat 51, so that the rotating rod 53 drives the reel 41 to rotate, thereby realizing the winding of the strapping tape.

[0074] See also Figure 12-14The winding assembly 4 also includes a direction-changing unit 42 for changing the packing tape from horizontal linear conveying to vertical linear conveying, a cutting unit 43 for cutting the packing tape, and two limiting units 44 for limiting the packing tape from being separated from the reel 41. The direction-changing unit 42 includes a direction-changing seat 81 and two direction-changing wheels 82. The direction-changing seat 81 is horizontally slidably arranged on the machine body. A first linear driving device 811 for driving the direction-changing seat 81 to slide relative to the machine body is installed on the machine body. The moving direction of the direction-changing seat 81 is consistent with the conveying direction of the packing tape. The two direction-changing wheels 82 are rotatably connected to the direction-changing seat 81, and a gap for the strapping belt to pass through is provided between the two direction-changing wheels 82. The direction-changing seat 81 is provided with a fifth driving motor 821 for driving any one of the two direction-changing wheels 82 to rotate. When the strapping belt is passed through the gap, the strapping belt is clamped between the two direction-changing wheels 82. The cutting unit 43 is located directly below the direction-changing unit 42. The cutting unit 43 includes a cutting knife 83, which is horizontally slidably arranged on the machine body. A fifth driving motor 821 for driving the cutting knife 83 is installed on the machine body. The cutting knife 83 slides relative to the machine body in a second linear drive device 831. The moving direction of the cutting knife 83 is perpendicular to the conveying direction of the strapping tape. A limit block 84 is provided on the machine body. The limit block 84 is located on the moving track of the cutting knife 83 and is provided with a groove 85 for accommodating the blade of the cutting knife 83. The two limiting units 44 are both located directly below the cutting unit 43. The limiting units 44 correspond to the reels 41 one by one. The limiting units 44 include a driving seat 86 and a resisting seat 87. The driving seat 86 is rotatably arranged on the rotating seat 5 1, a sixth driving motor 861 is installed on the rotating seat 51 for driving the driving seat 86 to rotate relative to the rotating seat 51, one end of the abutting seat 87 is hinged to the center position of the driving seat 86, and a torsion spring for applying a force against the packing belt to the abutting seat 87 is arranged between the two, an adhesive tape 88 is arranged on the side of the reel 41 along its axial direction, and a convex block 89 is arranged on both the driving seat 86 and the abutting seat 87, and the other end of the abutting seat 87 is cylindrical and when it abuts on the reel 41, the two convex blocks 89 contact and abut each other.

[0075] When the strapping tape is wound up, the conveying direction of the strapping tape is changed from horizontal to vertical under the guidance of the changing wheel 82. At the same time, the fifth driving motor 821 drives the changing wheel 82, so that the strapping tape is vertically conveyed through between the cutting knife 83 and the limit block 84 under the action of the changing unit 42 until it contacts the reel 41. At this time, the driving seat 86 drives the abutting seat 87 away from the reel 41 under the drive of the sixth driving motor 861, and then the driving seat 86 is reset by the sixth driving motor 861. Under the action of the torsion spring, the abutting seat 87 makes its other end press the strapping tape against the adhesive tape 88, so that the strapping tape can be wound up when the reel 41 rotates, and during the winding process, the other end of the abutting seat 87 can always press against the strapping tape wound up by the reel 41 under the action of the torsion spring.

[0076] During the process of the reel 41 rotating to reel the strapping tape, the direction-changing seat 81 moves relative to the machine body under the drive of the first linear drive device 811, so that the strapping tape can be wound around the reel 41 circle by circle along the axial direction of the reel 41, thereby ensuring the length of the strapping tape reeled on the reel 41.

[0077] When the reel 41 completes winding of the strapping tape, the cutting knife 83 moves under the drive of the second linear drive device 831 to cut the strapping tape, and then the positions of the two reels 41 are switched through the switching mechanism 5, so that the switched reel 41 continues to wind up the strapping tape. At this time, the cutting knife 83 is reset under the drive of the second linear drive device 831, and the strapping tape continues to be transported vertically. The other reel 41 that has completed winding of the strapping tape is removed from the rotating seat 51 and replaced with a new reel 41 for winding up the strapping tape again.

[0078] In this embodiment, the first linear drive device 811 adopts a linear module, and the second linear drive device 831 adopts an electric push rod.

[0079] The above contents described in this specification are merely examples of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, as long as they do not deviate from the contents of the present specification or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A method for producing a strapping tape, characterized in that: The steps include: Step 1: The core wires on each wire barrel are transported in a horizontal and parallel arrangement, and are heated during the transport process so that the surface of the core wire melts and becomes a semi-solid state; Step 2: Extrude the delivered core wires so that adjacent core wires are close to each other and adhere to each other, and cool them by blowing air so that the core wires adhere to each other in turn to form an inner core strip; Step 3: The material is heated and melted by an extruder and then wrapped on the conveying inner core strip to form a packing tape, which is then cooled by water cooling; Step 4: Wind the cooled strapping tape onto the reel, and switch the reel after winding is completed, so that the strapping tape winding and reel recovery can be carried out simultaneously; Wherein, in the step 2, the top and bottom surfaces of the formed inner core strip are scraped flat during the conveying process.

2. An assembly line based on the strapping tape production method according to claim 1, characterized in that: include: A guide assembly, used for guiding the core wires on a plurality of wire drums to be transported in a horizontal direction in a parallel arrangement; A molding assembly, which is used to make the surfaces of the core wires all in a molten state and to adhere them in sequence to form an inner core strip; A core wrapping assembly, which is used to wrap the outer shell on the inner core strip to form a packing tape; A winding component, used for winding the packing tape; Wherein, the forming assembly comprises a heating seat and an extrusion seat, both of which are detachably mounted on the machine body, a heating chamber is provided on the heating seat and a first conveying channel for horizontally conveying the core wire is provided along the axial direction of the heating chamber, an electric heating device is installed in the heating chamber, the heating area of ​​the electric heating device is located on the track of horizontal conveying of the core wire, an extrusion chamber is provided on the extrusion seat and a second conveying channel for horizontally conveying the core wire is provided along the axial direction of the extrusion chamber, two extrusion blocks are horizontally slidably arranged in the extrusion chamber, the two extrusion blocks are symmetrically arranged with respect to the second conveying channel, a driving device for driving the two extrusion blocks to move synchronously in opposite directions and a fan for cooling the inner core strip are installed on the extrusion seat, and the conveying track of the core wire is located in the blowing direction of the fan; A leveling assembly is provided between the molding assembly and the core wrapping assembly, and the leveling assembly includes a leveling seat, a leveling cavity is provided on the leveling seat, and a third conveying channel for horizontally conveying the inner core strip is provided along the axial direction of the leveling cavity, and two scrapers are provided in the leveling cavity, which are arranged up and down, and the scrapers are arranged obliquely relative to the inner core strip, and the distance between the blades of the two scrapers is smaller than the diameter of the third conveying channel; The winding assembly includes two reels, and the two reels are used to alternately wind up the packing tape through a switching mechanism.

3. The strapping tape production line according to claim 2, characterized in that: The guide assembly includes a bracket, which is provided with a plurality of extension rods for placing the wire bobbin, the wire bobbin is sleeved on the extension rods and cannot rotate, a first guide wheel unit and a plurality of second guide wheel units are provided on the machine body, the second guide wheel unit is located between the first guide wheel unit and the bracket, the first guide wheel unit includes a plurality of first guide wheels, the first guide wheels are rotatably connected to the machine body, the first guide wheels are arranged in a straight line in the horizontal direction in sequence, and a first guide channel for guiding the core wire transportation is formed between adjacent first guide wheels, the second guide wheel unit includes two second guide wheels, the second guide wheels are rotatably connected to the machine body, a first driving motor for driving any one of the two second guide wheels to rotate is installed on the machine body, the two guide wheels are arranged up and down, and a second guide channel for guiding the core wire transportation is formed between the two, and the first guide channels and the second guide channels correspond to each other one by one.

4. The strapping tape production line according to claim 3 is characterized in that: The extension rod is provided with an L-shaped lead frame, the transverse section of the lead frame is inserted along the axial direction of the extension rod and rotatably connected to the extension rod, a second drive motor for driving the lead frame to rotate relative to the extension rod is installed on the bracket, and a lead ring for the core wire to pass through is provided on the longitudinal section of the lead frame.

5. The strapping tape production line according to claim 2, characterized in that: The core wrapping assembly includes a core wrapping seat and an extruder. The core wrapping seat is detachably mounted on the machine body. A core wrapping cavity is provided on the core wrapping seat and a fourth conveying channel for horizontally conveying the inner core strip is provided along the axial direction of the core wrapping cavity. A through hole is provided on the core wrapping cavity for communicating with the discharge port of the extruder. A cooling water trough is provided on the machine body for cooling and shaping the inner core strip output from the core wrapping cavity.

6. The strapping tape production line according to claim 2, characterized in that: The switching mechanism includes a rotating seat, which is rotatably arranged on the machine body, and a third driving motor is installed on the machine body to drive the rotating seat to rotate relative to the machine body. Rotating rods are rotatably arranged at two relative positions on the rotating seat, and two reels are respectively mounted and fixed on the two rotating rods. A fourth driving motor is installed on the rotating seat to drive the rotating rod to rotate relative to the rotating seat. When the rotating seat and the machine body are in a relatively fixed state, the two reels are on the same vertical line.

7. The strapping tape production line according to claim 6, characterized in that: The winding assembly also includes a changing unit for changing the packing tape from horizontal linear conveying to vertical linear conveying, a cutting unit for cutting the packing tape and two limiting units for limiting the packing tape from detaching from the reel. The changing unit includes a changing seat and two changing wheels. The changing seat is horizontally slidably arranged on the machine body. A first linear drive device for driving the changing seat to slide relative to the machine body is installed on the machine body. The moving direction of the changing seat is perpendicular to the conveying direction of the packing tape. The two changing wheels are both rotatably connected to the changing seat and a gap is provided between the two changing wheels for the packing tape to pass through. A fifth driving motor for driving any one of the two changing wheels to rotate is installed on the changing seat. When the packing tape is passed through the gap, the packing tape is clamped between the two changing wheels. The cutting unit is located directly below the changing unit. The cutting unit includes a cutting knife. The cutting knife is horizontally slidably arranged on the machine body. A second linear drive device is installed to drive the cutting knife to slide relative to the machine body, and the moving direction of the cutting knife is perpendicular to the conveying direction of the packing tape. A limit block is provided on the machine body, and the limit block is located on the moving track of the cutting knife and is provided with a groove for accommodating the blade of the cutting knife. The two limiting units are located directly below the cutting unit, and the limiting units correspond to the reel one by one. The limiting unit includes a driving seat and a resisting seat, and the driving seat is rotatably arranged on the rotating seat. The rotating seat is provided with a sixth driving motor for driving the driving seat to rotate relative to the rotating seat, one end of the resisting seat is hinged to the center position of the driving seat and a torsion spring is provided between the two for applying a force to the resisting seat against the packing tape, an adhesive tape is provided on the side of the reel along its axial direction, and protrusions are provided on the driving seat and the resisting seat, and the other end of the resisting seat is cylindrical and when it resists on the reel, the two protrusions contact and resist.

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