Welding device of strapping tape automatic connection device

Abstract

The utility model discloses a welding device of a strapping tape automatic connection device, which comprises a base plate, a friction assembly and a strapping tape limiting mechanism, the strapping tape limiting mechanism is arranged on a support frame and can move between a working position and an avoiding position along a first direction, and the strapping tape limiting mechanism comprises a first limiting structure and a second limiting structure, the first limiting structure and the second limiting structure limit the first connecting part of the first strapping tape and the second connecting part of the second strapping tape respectively, so that the first connecting part and the second connecting part are mutually overlapped in the thickness direction. According to the welding device of the strapping tape automatic connecting device, it is ensured that the first connecting part of the first strapping tape and the second connecting part of the second strapping tape can be accurately aligned before welding, and it is ensured that the thickness of the welded connecting part is basically consistent with the thickness of the strapping tape; therefore, the connected strapping tape can pass through the machine head of the strapping machine without barriers.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a welding device of an automatic connecting device for strapping tapes. Background Art

[0002] The strapping machine winds the strapping tape around the item to be strapped, then tightens the strapping tape and fixes its two ends, so that the strapping tape is closely attached to the surface of the strapped package, ensuring that the package will not fall apart due to loose strapping during transportation and storage, and at the same time keeping the strapping neat and beautiful.

[0003] The tape supply mechanism of the existing strapping machine generally only installs one strapping tape reel. When the strapping tape on the strapping tape reel is used up, it is necessary to stop the machine and manually connect a new strapping tape reel, and then continue to run. Each time the strapping tape is used up, it is necessary to stop the machine for connection, so the production efficiency is relatively low. To solve this problem, Chinese Patent CN117963227A discloses an automatic connecting device for strapping tapes, which realizes the seamless connection of two rolls of strapping tapes, avoids the equipment shutdown caused by replacing the strapping tape roll, and thus improves the operation efficiency. However, the automatic connecting device for strapping tapes welds the head end of the second strapping tape to the tail end of the first strapping tape by heating, resulting in that the thickness and width of the joint position are both larger than those of the strapping tape itself, and it cannot smoothly pass through the strapping machine head with relatively high precision. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a welding device of an automatic connecting device for strapping tapes, so that the thickness of the connection part after welding is basically the same as the thickness and width of the strapping tape itself.

[0005] A welding device of an automatic connecting device for strapping tapes, which is used to be installed on a support frame. The welding device includes:

[0006] A backing plate, which is fixedly installed on the support frame and is parallel to the plane defined by the first direction and the second direction perpendicular to the first direction;

[0007] A friction assembly, which is located on one side of the backing plate and includes a mounting seat, a force applying member, a friction member and a connecting member. The mounting seat has a mounting cavity, the force applying member is installed in the mounting cavity and can move between a working position and an avoidance position along a third direction perpendicular to the plane; a friction head is provided at a first end of the friction member along the third direction, and a second end is connected to the force applying member through the connecting member. The friction member can telescopically move along the third direction with the force applying member and can reciprocate along the first direction relative to the force applying member; and

[0008] Strap limiting mechanism, the strap limiting mechanism is installed on the support frame, including a first limiting structure and a second limiting structure that can move between a working position and an avoidance position along a first direction. When the strap limiting mechanism is in the working position, the first limiting structure and the second limiting structure are located between the friction head and the backing plate, and are respectively used to limit the first connecting portion of the first strap and the second connecting portion of the second strap, so that the first connecting portion and the second connecting portion overlap each other in a third direction; when the strap limiting mechanism is in the avoidance position, the first limiting structure and the second limiting structure avoid the friction head, so that the friction head can move to the working position and cooperate with the backing plate to press the first connecting portion and the second connecting portion, and generate high-frequency friction through the reciprocating movement of the friction head along the first direction, so that the first connecting portion and the second connecting portion are welded together, and the thickness after welding is basically the same as the thickness of the strap.

[0009] In one embodiment, the strap limiting mechanism includes:

[0010] A limiting member extending along a second direction perpendicular to the first direction;

[0011] A first limiting portion located at the first end of the limiting member along the second direction, and a first limiting step is formed between the first limiting portion and the first side surface on one side of the limiting member along the second direction, for limiting the end surface of the first connecting portion; and

[0012] A second limiting portion located at the second end of the limiting member along the second direction, and a second limiting step is formed between the second limiting portion and the second side surface on the other side of the limiting member along the second direction, for limiting the end surface of the second connecting portion.

[0013] In one embodiment, the strap limiting mechanism further includes:

[0014] A sliding plate, both ends of the sliding plate along the second direction are slidably mounted on a first fixed seat and a second fixed seat respectively along the first direction, the first fixed seat and the second fixed seat are installed on the support frame, the first end of the sliding plate along the first direction is connected to the limiting member, and a third limiting step is formed between the first side surface of the limiting member and the end surface of the first end of the sliding plate, for limiting one side surface of the first connecting portion in the width direction, and a second limiting step is formed between the second side surface of the limiting member and the end surface of the first end of the sliding plate, for limiting one side surface of the second connecting portion in the width direction.

[0015] In one embodiment, the first side surface of the limiting member is a plane, and the bundling belt limiting mechanism further includes a position detection assembly. The position detection assembly includes an induction sheet, a reset member, and a position sensor. The induction sheet is movably mounted on the sliding plate. One end of the induction sheet is provided with the first limiting portion. When the induction sheet is in the initial position, the first limiting step is formed with the first side surface of the limiting member; the reset member is used to reset the induction sheet to the initial position, and the position sensor is used to detect the position of the induction sheet.

[0016] In one embodiment, the first side surface of the limiting member is a plane, and the bundling belt limiting mechanism further includes a position detection assembly. The position detection assembly includes an induction sheet, a reset member, and a position sensor. The induction sheet is rotatably mounted on the sliding plate. One end of the induction sheet is provided with the first limiting portion; the reset member is used to reset the induction sheet to the initial position, and the position sensor is used to detect the position of the induction sheet.

[0017] In one embodiment, the reset member is a spring. One end of the reset member is connected to the other end of the induction sheet opposite to the first limiting portion, and the other end of the reset member is connected to the second fixed seat.

[0018] In one embodiment, the position sensor is a photoelectric sensor.

[0019] In one embodiment, the second limiting portion and the limiting member are of an integral structure.

[0020] In one embodiment, convex teeth are provided on the surface of the backing plate and the end surface of the friction head.

[0021] In one embodiment, a first guiding groove extending in the first direction and a second guiding groove extending in the first direction are respectively provided on one side surface of the second end of the friction member along the third direction and the first end of the force applying member along the third direction. The connecting member has a first guiding block and a second guiding block that cooperate with the first guiding groove and the second guiding groove, and the first guiding block and the second guiding block are respectively located in the first guiding groove and the second guiding groove.

[0022] In one embodiment, the force applying member includes a driving member, a transmission member, and a force applying spring. The first end of the driving member along the third direction is connected to the friction member, the second end is inserted into the second installation cavity and is provided with a blind hole, the force applying spring is installed in the blind hole, and one end of the transmission member along the third direction is inserted into the blind hole.

[0023] The welding device of the above-mentioned automatic binding tape connecting device ensures that the first connecting part of the first binding tape and the second connecting part of the second binding tape can be accurately aligned before welding through the binding tape limiting mechanism, ensuring that the thickness of the connecting part after welding is basically the same as the thickness of the binding tape itself. The shaping mechanism cuts off the excess width of the welded part, making the width of the connecting part after welding basically the same as the width of the binding tape itself, so as to ensure that the binding tape after connection can pass through the head of the binding machine without obstacles. Brief Description of the Drawings

[0024] Figure 1 Is a perspective view of the automatic binding tape connecting device in one embodiment of the present utility model;

[0025] Figure 2 Is Figure 1 A perspective view of the shown automatic binding tape connecting device with the housing hidden;

[0026] Figure 3 Is Figure 1 An exploded schematic view of the shown automatic binding tape connecting device with the housing hidden;

[0027] Figure 4 Is the top view of the attached Figure 2 ;

[0028] Figure 5 Is a cross-sectional view along the C-C line in Figure 4 ;

[0029] Figure 6 Is Figure 1 A perspective view of the support frame equipped with the first motor and the second motor shown in

[0030] Figure 7 Is Figure 1 A perspective view of the tape pressing and welding mechanism of the shown automatic binding tape connecting device;

[0031] Figure 8 Is Figure 1 The top view of the tape pressing and welding mechanism of the shown automatic binding tape connecting device;

[0032] Figure 9 Is Figure 8 A cross-sectional view along the B-B direction;

[0033] Figure 10 Is Figure 1 A perspective view of the welding device of the shown automatic binding tape connecting device;

[0034] Figure 11 Is Figure 10 A perspective view with the tool rest, cutting tool, and backing plate hidden;

[0035] Figure 12Is a perspective view of the cam assembly;

[0036] Figure 13 Is a perspective view of the lever assembly;

[0037] Figure 14 Is a perspective view of the crank - connecting rod mechanism.

[0038] Explanation of reference numerals:

[0039] 1. Housing; 11. Housing main body; 12. Front cover; 13. First button; 14. Second button;

[0040] 2. Support frame; 21. First support plate; 22. Second support plate; 221. First support plate unit; 222. Second support plate unit; 223. Accommodation cavity; 224. First grooved belt; 225. Second grooved belt; 23. First belt width adjustment block; 24. Second belt width adjustment block; 25. Third support plate; 26. Fourth support plate;

[0041] 3. Belt pressing and welding mechanism;

[0042] 31. Mounting seat; 314. Mounting seat main body; 315. Cover plate;

[0043] 32. First belt pressing assembly; 321. First belt pressing member; 322. First biasing spring; 323. First transmission member; 324. First reset member; 325. First connecting pin; 326. First roller;

[0044] 33. Second belt pressing assembly; 331. Second belt pressing member; 332. Second biasing spring; 333. Second transmission member; 334. Second reset member; 335. Second connecting pin; 336. Second roller;

[0045] 34. Welding assembly; 341. Friction member; 341a. First friction tooth; 342. Driving member; 343. Connecting member; 344. Third transmission member; 345. Third reset member; 346. Third connecting pin; 347. Third roller; 348. Third biasing spring;

[0046] 4. Limiting and shaping assembly; 41. First fixed seat; 411. First fixed groove; 42. Second fixed seat; 421. Second fixed groove; 43. Slide plate; 431. Limiting member; 432. Second limiting portion; 44. Pad; 441. Second friction tooth; 442. Third friction tooth; 443. Fourth friction tooth; 451. Tool holder; 452. First cutter; 454. Guide post; 455. Transmission shaft; 456. Connecting block; 461. Inductive sheet; 461a. First limiting portion; 462. Fourth reset member; 463. In - place inductor; 464. Fifth reset member;

[0047] 5. First driving motor;

[0048] 6. Cam assembly; 601. Cam main shaft; 604. First cam; 605. Second cam; 606. Third cam; 607. Fourth cam; 608. Fifth cam;

[0049] 10. Lever assembly; 602. First auxiliary shaft; 603. Second auxiliary shaft; 609. First connecting rod; 610. Second connecting rod; 611. Third connecting rod; 612. Fourth connecting rod; 613. Fifth connecting rod; 614. Sixth connecting rod; 615. Seventh connecting rod; 618. Fourth roller; 619. Fifth roller; 620. Sixth roller; 621. Seventh roller; 622. Eighth roller;

[0050] 7. Second driving motor;

[0051] 8. Crank - connecting rod mechanism; 81. Eccentric shaft; 82. Eighth connecting rod;

[0052] 91. First binding strap; 911. First connecting part; 92. Second binding strap; 921. Second connecting part. Detailed implementation mode

[0053] To make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following clearly and completely describes the detailed implementation mode of the present utility model with reference to the accompanying drawings. Obviously, the specific details described below are only a part of the embodiments of the present utility model, and the present utility model can also be implemented in many other embodiments different from those described herein. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0054] In this article, when an element is referred to as "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The front, rear, up, down, and other orientation terms involved are defined based on the positions of the components in the drawings and the positions of the components relative to each other, only for the clarity and convenience of expressing the technical solution. It should be understood that the use of the orientation terms should not limit the scope of protection of the present utility model claimed.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0056] See Figures 1 - 5The strapping automatic connection device comprises a support frame 2, a strapping limit mechanism, a strapping and welding mechanism 3, a shaping mechanism, a first driving device and a second driving device, wherein the support frame 2 has a first direction ( Figure 6 middle "X" direction), the second direction ( Figure 6 "Y" direction) and the third direction ( Figure 6 In the "Z" direction, the second direction is perpendicular to the first direction, the third direction is perpendicular to the first direction and the second direction, and the support frame has a first belt groove 224 for the first connecting portion of the first strapping belt 91 to pass through and a second belt groove 225 for the second connecting portion 921 of the second strapping belt 92 to pass through.

[0057] The strapping strap limiting mechanism is installed on the support frame 2, and the strapping strap limiting mechanism includes a first limiting structure and a second limiting structure that can move between a working position and an avoidance position along a first direction. When the first limiting structure and the second limiting structure are in the working position, they are used to limit the first connecting portion 911 of the first strapping strap 91 and the second connecting portion 921 of the second strapping strap 92, respectively, so that the first connecting portion 911 and the second connecting portion 921 overlap each other in the third direction.

[0058] The belt pressing and welding mechanism 3 is installed on the support frame 2, and includes a pad 44, a first belt pressing assembly 32, a welding assembly 34 and a second belt pressing assembly 33. The pad 44 is located on one side of the limiting member 431 along the first direction, and the first belt pressing assembly 32, the welding assembly 34 and the second belt pressing assembly 33 are located on the other side of the limiting member 431 along the first direction. The first belt pressing assembly 32 can move between a clamping position and a loosening position. When the first belt pressing assembly 32 is in the clamping position, it cooperates with the pad 44 to fix the ends of the first strapping belt 91 respectively; the second belt pressing assembly 33 can move between a clamping position and a loosening position. When the second belt pressing assembly 33 is in the clamping position, it cooperates with the pad 44 to fix the ends of the first strapping belt 91 respectively; the second belt pressing assembly 33 can move between a clamping position and a loosening position. When the second belt pressing assembly 33 is in the clamping position, it cooperates with the pad 44 It is used to fix the head end of the second strapping belt 92; the welding assembly 34 includes a force-applying member and a friction member 341, the force-applying member can move between a working position and an avoidance position, and the friction member 341 can reciprocate along a first direction relative to the force-applying member. When the friction member 341 is in the working position, it cooperates with the pad 44 to apply pressure between the stacked first connection part 911 and the second connection part 921. When the friction member 341 reciprocates along the first direction relative to the pad 44, it drives the first connection part 911 and the second connection part 921 to rub at a high frequency, so that the first connection part 911 and the second connection part 921 are welded together and the thickness is basically consistent with the thickness of the strapping belt.

[0059] The shaping mechanism is installed on the support frame 2. It includes a first cutter 452 and a second cutter (not shown in the figure). The first cutter 452 and the second cutter are arranged along the first direction and can telescopically move. When the first cutter 452 and the second cutter extend, they cut off the excess width of the first connecting portion 911 and the second connecting portion 921 that are welded together.

[0060] The first driving device is connected to the limiting member 431, the first tape pressing assembly 32, the second tape pressing assembly 33, and the transmission member; the second driving device is connected to the friction member 341.

[0061] The automatic splicing device for bundling tapes of the present utility model realizes the seamless connection of two rolls of bundling tapes and improves the production efficiency. Moreover, the thickness and width of the connection part are basically the same as those of the bundling tape itself, so as to ensure that the bundling tape after splicing can pass through the head of the bundling machine without obstacles, ensuring the high efficiency and stability of the bundling process.

[0062] The specific structure of the automatic splicing device for bundling tapes will be elaborated in detail below in combination with specific embodiments.

[0063] Outer shell

[0064] The automatic splicing device for bundling tapes as an example further includes an outer shell 1, and the outer shell 1 plays a protective role. The outer shell 1 as an example includes an outer shell main body 11 and a front cover 12 installed on the front side of the outer shell main body 11. A control circuit (not shown in the figure) is installed inside the outer shell main body 11. A first button 13 and a second button 14 are installed on the panel of the outer shell main body 11, and the first button 13 and the second button 14 are connected to the control circuit.

[0065] Support frame

[0066] See Figure 6, as an example, the support frame 2 includes a first support plate 21 and a second support plate 22. The first support plate 21 is parallel to the plane defined by the first direction and the second direction. The second support plate 22 is parallel to the plane defined by the second direction and the third direction. The first end of the second support plate 22 along the third direction is connected to one end of the first support plate 21. A receiving cavity 223 is provided in the middle of the second support plate 22. First grooves 224 and second grooves 225 are respectively provided at the second ends of the second support plate 22 on both sides of the receiving cavity 223 along the third direction. Preferably, the second support plate 22 includes a first support plate unit 221 and a second support plate unit 222. The first support plate unit 221 and the second support plate unit 222 are arranged at intervals along the second direction, and a receiving cavity 223 is formed therebetween. The first ends of the first support plate unit 221 and the second support plate unit 222 along the third direction are fixed on the first support plate 21. First grooves 224 and second grooves 225 are respectively provided at the second ends of the first support plate unit 221 and the second support plate unit 222 along the third direction. As an alternative, the second support plate 22 can be an integral structure, and a part is cut off on the second support plate 22 to form the receiving cavity 223. The support frame 2 having such a structure has the advantages of reasonable space layout and compact structure.

[0067] Preferably, a first belt width adjusting block 23 is provided on one side of the second end of the first support plate unit 221 along the third direction and along the second direction. The first belt width adjusting block 23 and the first support plate unit 221 together form the first groove 224. By replacing the first belt width adjusting blocks 23 with different widths, the width of the first groove 224 can be adjusted to adapt to bundling belts with different widths. Similarly, a second belt width adjusting block 24 is provided on one side of the second end of the second support plate unit 222 along the third direction and along the second direction. The second belt width adjusting block 24 and the second support plate unit 222 together form the second groove 225. By replacing the second belt width adjusting blocks 24 with different widths, the width of the second groove 225 can be adjusted to adapt to bundling belts with different widths.

[0068] In one embodiment, the support frame 2 further includes a third support plate 25 and a fourth support plate 26. The third support plate 25 and the fourth support plate 26 are located on the first side of the second support plate 22 in the second direction. The third support plate 25 and the fourth support plate 26 are parallel to the plane defined by the first direction and the third direction, and are arranged opposite to each other in the second direction. The third support plate 25 is connected to the first support plate 21 and the first support plate unit 221, and the fourth support plate 26 is connected to the first support plate 21 and the second support plate unit 222.

[0069] Belt pressing and welding mechanism

[0070] Reference Figures 7 - 9, as an example, the tape pressing and welding mechanism 3 further includes a mounting base 31. The mounting base 31 is located at the middle position of the accommodation cavity 223 and is fixed to the first support plate unit 221 and the second support plate unit 222 by screws. An installation cavity is provided on the mounting base 31. The first tape pressing assembly 32 and the second tape pressing assembly 33 are installed in the installation cavity.

[0071] As an example, the mounting base 31 includes a mounting base body 314 and a cover plate 315. A groove is provided on one side of the mounting base body 314, and the cover plate 315 covers the opening of the groove to form the installation cavity. The mounting base 31 adopts this split structure, which is convenient for processing.

[0072] As an example, the first tape pressing assembly 32 includes a first tape pressing member 321, a first biasing spring 322, a first transmission member 323, and a first reset member 324. A pressing head is provided at one end of the first tape pressing member 321, and the other end is inserted into the installation cavity and is provided with a first blind hole. The first biasing spring 322 is installed in the first blind hole. One end of the first transmission member 323 is inserted into the first blind hole, and the other end extends out of the installation cavity and is provided with a first roller 326. The first reset member 324 is used to reset the first tape pressing member 321. In this embodiment, the first reset member 324 is a spring. One end of the first reset member 324 is connected to the first tape pressing member 321 through a first connecting pin 325, and the other end is fixed to the mounting base 31. Since the first biasing spring 322 is entirely installed in the first tape pressing member 321 and part of the first transmission member 323 is installed in the first tape pressing member 321, the length of the tape pressing assembly is greatly shortened, the disassembly and assembly are simple, and the cost is greatly reduced.

[0073] Similarly, the second tape pressing assembly 33 includes a second tape pressing member 331, a second biasing spring 332, a second transmission member 333, and a second reset member 334. A pressing head is provided at one end of the second tape pressing member 331, and the other end is inserted into the installation cavity and is provided with a second blind hole. The second biasing spring 332 is installed in the second blind hole. One end of the second transmission member 333 is inserted into the second blind hole, and the other end extends out of the installation cavity and is provided with a second roller. The second reset member 334 is used to reset the second tape pressing member 331. In this embodiment, the second reset member 334 is a spring. One end of the second reset member 334 is connected to the second tape pressing member 331 through a second connecting pin 335, and the other end is fixed to the mounting base 31. Since the second biasing spring 332 is entirely installed in the second tape pressing member 331 and part of the second transmission member 333 is installed in the second tape pressing member 331, the length of the tape pressing assembly is greatly shortened, the disassembly and assembly are simple, and the cost is greatly reduced.

[0074] As an example, the welding assembly 34 further includes a connecting member 343. The connecting member 343 is U-shaped and has a first guiding block and a second guiding block. A first friction tooth 341a is provided at a first end of the friction member 341 along the third direction. A first guiding groove extending along the first direction and a second guiding groove extending along the first direction are respectively provided on a side surface of a second end of the friction member along the third direction and a first end of the applying member along the third direction. The first guiding block and the second guiding block are respectively located in the first guiding groove and the second guiding groove. The friction member 341 is connected to the applying member through the connecting member 343, so that the friction member can move telescopically along the third direction with the applying member and can reciprocate along the first direction relative to the applying member.

[0075] As an example, the applying member includes a driving member 342, a third applying spring 348, a third transmission member 344, and a third reset member 345. A second end of the driving member 342 along the third direction is inserted into the installation cavity and is provided with a third blind hole. The third applying spring 348 is installed in the third blind hole. One end of the third transmission member 344 along the third direction is inserted into the third blind hole, and the other end is provided with a third roller 347. The third reset member 345 is used to reset the driving member 342. In this embodiment, the third reset member 345 is a spring. One end of the third reset member 345 is connected to the driving member 342 through a third connecting pin 346, and the other end is fixed on the mounting seat 31.

[0076] The heat generated by the friction member 341 of the welding assembly 34 heats the first connecting portion 911 of the first bundling band 91 and the second connecting portion 921 of the second bundling band 92 to a molten state on the contact surface, and they are welded together after cooling. During the welding process, the welding assembly 34 also applies an appropriate pressure to the superposed first connecting portion 911 and second connecting portion 921. This pressure helps the molten materials of the bundling bands to mix and solidify, forming a firm connection, and can ensure that the thickness at the interface is consistent with the bundling bands themselves.

[0077] Limit shaping assembly

[0078] See Figure 10 、 11 As shown in

[0079] As an example, first fixing grooves 411 and second fixing grooves 421 are respectively provided on opposite faces of the first fixing base 41 and the second fixing base 42, and two ends of the backing plate 44 in the second direction are respectively fixed in the first fixing groove 411 and the second fixing groove 421. A plurality of second friction teeth 441, third friction teeth 442 and fourth friction teeth 443 are arranged at intervals in the second direction on a side of the backing plate 44 facing the pressure belt and the welding mechanism 3, and the second friction teeth 441, third friction teeth 442 and fourth friction teeth 443 are respectively opposite to the head of the first pressure belt member 321, the first friction teeth 341a of the friction member 341 and the head of the second pressure belt member 331.

[0080] As shown in the figure, the strapping tape limiting mechanism as an example includes a sliding plate 43, a limiting member 431, a first limiting portion 461a and a second limiting portion 432. The sliding plate 43 is located on a side of the backing plate 44 close to the accommodating cavity 223, and is slidably mounted on the first fixing base and the second fixing base in the first direction. The limiting member 431 is connected to one end of the sliding plate 43 in the first direction. A third limiting step for limiting the width direction of the first connecting portion is formed between a first side surface of the limiting member 431 in the first direction and an end surface of the first end of the sliding plate 43. A fourth limiting step for limiting the width direction of the second connecting portion is formed between a second side surface of the limiting member 431 in the first direction and an end surface of the first end of the sliding plate 43. The first limiting portion 461a is provided at a first end of the limiting member 431 in the second direction, and a first limiting step for limiting the end of the first connecting portion is formed between the first limiting portion 461a and the first side surface of the limiting member 431. The second limiting portion 432 is provided at a second end of the limiting member 431 in the second direction, and a second limiting step for limiting the end of the first connecting portion is formed between the second limiting portion 432 and the second side surface of the limiting member 431. The first connecting portion is limited by the first limiting step and the third limiting step, and the second connecting portion is limited by the second limiting step and the fourth limiting step, so that the first connecting portion 911 and the second connecting portion 921 overlap in the third direction.

[0081] In one embodiment, the strapping strap limiting mechanism as an example further includes an in-place detection component, which includes a sensing sheet 461, a fourth resetting component 462 and an in-place sensor 463. The sensing sheet 461 is rotatably mounted on the slide plate 43. When the sensing sheet 461 is in the initial position, a first limiting portion 461a is provided at one end of the sensing sheet 461. The first limiting portion 461a and the surface of the limiting member 431 on the first side along the first direction form a limiting step to limit the head end of the first strapping strap. The fourth resetting component 462 is used to reset the sensing sheet 461. The in-place sensor 463 is used to detect the position of the sensing sheet 461. The in-place sensor 463 as an example is a photoelectric sensor. In the initial state, the first limiting portion 461a of the sensing sheet 461 forms a limiting step with the surface of the limiting member 431. When the end of the first strapping belt 91 contacts the first limiting portion 461a of the sensing sheet 461, the sensing sheet 461 is driven to rotate, thereby triggering the in-position sensor 463, which transmits a signal to the control system. When the slide plate 43 moves to the avoidance position, the sensing sheet 461 is reset under the action of the fourth reset component 462.

[0082] As an example, the second limiting portion 432 and the limiting member 431 are an integral structure.

[0083] The strapping belt limiting mechanism of this structure ensures that the first connecting portion 911 of the first strapping belt and the second connecting portion 921 of the second strapping belt 92 can be accurately aligned before welding. This alignment is a prerequisite for achieving high-quality welding, because only when the two ends are correctly aligned, the welded interface will be flat and strong enough.

[0084] The shaping mechanism as an example also includes a knife holder 451, a guide post 454 and a transmission shaft 455. The knife holder 451 is located on the side of the backing plate 44 opposite to the pressing belt and the welding mechanism 3, and can move between an extended position and a retracted position along the third direction. The first cutter 452 and the second cutter are arranged relatively along the second direction, and one end of the first cutter 452 and the second cutter along the third direction is fixed on the knife holder 451, and the other end passes through the through hole on the backing plate 44. The guide post 454 and the transmission shaft 455 both extend along the third direction, and the guide post 454 cooperates with the guide hole on the second fixed seat 42 to guide the movement of the knife holder 451. The transmission shaft 455 cooperates with the shaft hole on the first fixed seat 41, and the other end of the transmission shaft 455 extends out of the shaft hole and is connected to the connecting block 456.

[0085] The shaping mechanism trims and shapes the interface of the welded strapping, ensuring the flatness and neatness of the interface, removing any excess material or protrusions that may have occurred during the welding process, and ensuring that the width of the welded strapping is consistent with the original strapping. This is very important for the strapping to pass smoothly through the head of the strapping machine and other guiding mechanisms during subsequent use, avoiding malfunctions caused by inconsistent interface dimensions.

[0086] The first driving device

[0087] Reference Figures 1 - 13 As shown, the first driving device includes a first driving motor 5, a cam assembly 6, and a lever assembly. Among them, the first driving motor 5 is fixed on the third support plate 25 and the fourth support plate 26, and the first driving motor 5 is connected to the control system.

[0088] The cam assembly 6 is fixed on the third support plate 25 and the fourth support plate 26. The cam assembly 6 includes a cam main shaft 601, a first cam 604, a second cam 605, a third cam 606, a fourth cam 607, and a fifth cam 608. The cam main shaft 601 extends in the second direction, and both ends of the cam main shaft 601 are supported in the mounting holes of the third support plate 25 and the fourth support plate 26. One end of the cam main shaft 601 is connected to the output shaft of the first driving motor 5 through a first belt transmission mechanism. The first cam 604, the second cam 605, the third cam 606, the fourth cam 607, and the fifth cam 608 are all installed on the cam main shaft 601 and rotate synchronously with the cam main shaft 601.

[0089] The lever assembly 10 includes a first secondary shaft 602, a second secondary shaft 603, a first connecting rod 609, a second connecting rod 610, a third connecting rod 611, a fourth connecting rod 612, a fifth connecting rod 613, a sixth connecting rod 614, and a seventh connecting rod 615. Both ends of the first secondary shaft 602 and the second secondary shaft 603 are supported in the mounting holes of the third support plate 25 and the fourth support plate 26. The first connecting rod 609, the second connecting rod 610, and the third connecting rod 611 are all rotatably installed on the first secondary shaft 602. One end of the first connecting rod 609 is provided with a fourth roller 618, and the fourth roller 618 contacts the surface of the first cam 604. The other end of the first connecting rod 609 contacts the surface of the first roller 326 of the first belt pressing assembly 32. One end of the second connecting rod 610 is provided with a fifth roller 619, and the fifth roller 619 contacts the surface of the second cam 605. The other end of the second connecting rod 610 contacts the surface of the third roller 347 of the welding assembly 34. One end of the third connecting rod 611 is provided with a sixth roller 620, and the sixth roller 620 contacts the surface of the fourth cam 607. The other end of the third connecting rod 611 contacts the surface of the second roller 336 of the second belt pressing assembly 33.

[0090] One end of the fourth link 612 is rotatably mounted on the second auxiliary shaft 603. The other end of the fourth link 612 is hinged to one end of the fifth link 613, and the other end of the fifth link 613 is connected to the slide plate 43. A seventh roller 621 is provided in the middle of the fifth link 613, and the surface of the seventh roller 621 contacts the surface of the third cam 606. One end of the fifth reset member 464 is connected to the slide plate 43, and the other end is connected to the fourth link 612.

[0091] One end of the sixth link 614 is rotatably mounted on the second auxiliary shaft 603. The other end of the sixth link 614 is hinged to one end of the seventh link 615, and the other end of the seventh link 615 is connected to the connection block 456. An eighth roller 622 is provided in the middle of the sixth link 614, and the surface of the eighth roller 622 contacts the surface of the fifth cam 608.

[0092] Second driving device

[0093] The second driving device as an example includes a second driving motor 7 and a crank - connecting rod mechanism 8. The second driving motor 7 is fixed on the third support plate 25 and the fourth support plate 26, and the second driving motor 7 is connected to the control system. The output shaft of the second driving motor 7 is connected to the friction member 341 through the crank - connecting rod mechanism 8. The rotational motion of the second driving motor 7 is converted into the reciprocating motion of the friction member 341 through the crank - connecting rod mechanism 8.

[0094] As Figure 14 As shown, the crank - connecting rod mechanism 8 includes an eccentric shaft 81 and an eighth link 82. The eccentric shaft 81 is rotatably mounted on the second fixed seat 42. One end of the eccentric shaft 81 is connected to the output shaft of the second driving motor 7 through a second pulley transmission mechanism. The other end of the eccentric shaft 81 is provided with an eccentric portion, and the eccentric portion is connected to one end of the eighth link 82. The other end of the eighth link 82 is connected to the friction member 341.

[0095] Working principle

[0096] I. Upper belt preparation

[0097] Manually insert the end of the first binding tape 91 from the first tape groove 224 into the stopper 431, triggering the in - place inductor 463, causing the fourth cam 607 to rotate. Through the third link 611, the first tape - pressing assembly 32 is lifted to press the end of the first binding tape 91.

[0098] Manually insert the head of the first binding tape 91 from the second tape groove 225 into the stopper 431, press the first button 13, causing the first cam 604 to rotate. Through the first link 609, the second tape - pressing assembly 33 presses the head of the first binding tape 91. At this time, the third cam 606 drives the slide plate 43 to retract, and the mechanism enters the automatic operation state.

[0099] II. Automatic Tape Joining

[0100] When packing, press the second button 14, and the automatic tape joining device starts to work. During automatic operation, the second cam 605 rotates to drive the welding assembly 34 to press and clamp the first connecting portion 911 of the first binding tape 91 and the second connecting portion 921 of the second binding tape 92. The second driving motor 7 drives the friction member 341 through the crank and connecting rod mechanism 8 for friction welding, so that the final thickness of the welding position is the same as the thickness of the binding tape (the thickness of the two tapes becomes the thickness of one tape after welding). The cam assembly 6 continues to rotate to release the pressure of the pressing knife, so that the tape can be loosened. Immediately afterwards, the fifth cam 608 rotates to drive the first cutting knife 452 and the second cutting knife to trim the welding position, so that the welding position is the same width as the binding tape. All mechanisms return to the origin, and at this time the tape joining work ends.

[0101] The automatic tape joining device of the embodiment of the present utility model optimizes the continuous supply of the binding tape, realizes the seamless connection of two rolls of binding tapes through automation technology, avoids the equipment shutdown caused by replacing the binding tape roll, not only improves the operation efficiency, but also ensures the continuous operation of the equipment, and significantly improves the productivity and efficiency of the overall packing operation.

[0102] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model.

Claims

1. A welding device for an automatic connecting device of a strapping belt, used for installation on a support frame, characterized in that: The welding device comprises: A pad, the pad is fixedly mounted on the support frame, and the pad is parallel to a plane defined by a first direction and a second direction perpendicular to the first direction; A friction assembly, the friction assembly is located on one side of the backing plate, and comprises a mounting seat, a force-applying member, a friction member and a connecting member, the mounting seat having a mounting cavity, the force-applying member being mounted in the mounting cavity and being able to move between a working position and an avoidance position along a third direction perpendicular to the plane; a friction head is provided at a first end of the friction member along the third direction, and a second end is connected to the force-applying member through the connecting member, the friction member being able to telescopically move along the third direction with the force-applying member, and being able to reciprocate relative to the force-applying member along the first direction; and The strapping strap limiting mechanism is installed on the supporting frame, and comprises a first limiting structure and a second limiting structure which can move between a working position and an avoidance position along a first direction. When the strapping strap limiting mechanism is in the working position, the first limiting structure and the second limiting structure are located between the friction head and the pad, and are respectively used to limit the first connection part of the first strapping strap and the second connection part of the second strapping strap, so that the first connection part and the second connection part overlap with each other in a third direction; when the strapping strap limiting mechanism is in the avoidance position, the first limiting structure and the second limiting structure avoid the friction head, so that the friction head can move to the working position and cooperate with the pad, press the first connection part and the second connection part, and generate high-frequency friction through the reciprocating motion of the friction head along the first direction, so that the first connection part and the second connection part are welded together, and the thickness after welding is basically consistent with the thickness of the strapping strap.

2. The welding device of the automatic connecting device for strapping belts according to claim 1, characterized in that: The strapping belt limiting mechanism comprises: A limiter extending along a second direction perpendicular to the first direction; A first limiting portion, located at a first end of the limiting member along the second direction, and forming a first limiting step between a first side surface of the limiting member along one side of the second direction, for limiting the end surface of the first connecting portion; and The second limiting portion is located at the second end of the limiting member along the second direction, and forms a second limiting step between the second side surface of the limiting member on the other side of the second direction, for limiting the end surface of the second connecting portion.

3. The welding device of the automatic connecting device for strapping belts according to claim 2, characterized in that: The strapping belt limiting mechanism also includes: A skateboard, wherein both ends of the skateboard along the second direction can be slidably installed on the first fixing seat and the second fixing seat along the first direction respectively, and the first fixing seat and the second fixing seat are installed on the support frame, and the first end of the skateboard along the first direction is connected to the limiting member, and a third limiting step is formed between the first side surface of the limiting member and the end surface of the first end of the skateboard, which is used to limit a side surface in the width direction of the first connecting part, and a second limiting step is formed between the second side surface of the limiting member and the end surface of the first end of the skateboard, which is used to limit a side surface in the width direction of the second connecting part.

4. The welding device of the strapping belt automatic connecting device according to claim 3 is characterized in that: The first side surface of the limiting member is a plane, and the strapping belt limiting mechanism also includes an in-place detection component, which includes a sensing sheet, a reset component and an in-place sensor. The sensing sheet is movably mounted on the slide, and one end of the sensing sheet is provided with the first limiting portion; the reset component is used to reset the sensing sheet to an initial position, and the in-place sensor is used to detect the position of the sensing sheet.

5. The welding device of the automatic connecting device for strapping tape according to claim 4, characterized in that: The reset component is a spring, one end of the reset component is connected to the other end of the sensing sheet opposite to the first limiting portion, and the other end of the reset component is connected to the second fixing seat.

6. The welding device of the strapping belt automatic connecting device according to claim 4, characterized in that: The in-position sensor is a photoelectric sensor.

7. The welding device of the automatic connecting device for strapping belts according to claim 2, characterized in that: The second limiting portion and the limiting member are an integrated structure.

8. The welding device of the strapping belt automatic connection device according to claim 1, characterized in that: The surface of the backing plate and the end surface of the friction head are both provided with convex teeth.

9. The welding device of the strapping belt automatic connecting device according to claim 1, characterized in that: A first guide groove and a second guide groove extending along the first direction are respectively provided on one side surface of the second end of the friction member along the third direction and the first end of the force-applying member along the third direction, and the connecting member has a first guide block and a second guide block cooperating with the first guide groove and the second guide groove, and the first guide block and the second guide block are respectively located in the first guide groove and the second guide groove.

10. The welding device of the automatic connecting device for strapping tape according to claim 1, characterized in that: The force-applying member includes a driving member, a transmission member and a force-applying spring. The first end of the driving member along the third direction is connected to the friction member, and the second end is inserted into the second mounting cavity and is provided with a blind hole. The force-applying spring is installed in the blind hole, and one end of the transmission member along the third direction is inserted into the blind hole.

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