Strapping tape limiting mechanism of strapping tape automatic connection device

Abstract

The utility model discloses a strapping tape limiting mechanism of an automatic strapping tape connection device, the strapping tape limiting mechanism is installed on a support frame, can move between a working position and an avoiding position along a first direction, and comprises a first limiting structure and a second limiting structure, when the strapping tape limiting mechanism is located at the working position, 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 overlapped in the thickness direction. According to the strapping tape limiting mechanism of the automatic strapping tape 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 packing, in particular to a bundling belt limiting mechanism of an automatic bundling belt connecting device. Background Art

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

[0003] The existing tape supply mechanism of a packing machine generally only installs one bundling belt reel. When the bundling belt on the bundling belt reel is used up, it is necessary to stop the machine and manually connect a new bundling belt reel, and then continue to run. Each time the bundling belt 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 bundling belt connecting device, which realizes the seamless connection of two rolls of bundling belts, avoids the equipment downtime caused by replacing the bundling belt roll, and thus improves the operation efficiency. However, the automatic bundling belt connecting device welds the head end of the second bundling belt to the tail end of the first bundling belt by heating, resulting in the thickness and width of the joint position being larger than those of the bundling belt itself, and it cannot smoothly pass through the bundling machine head with higher precision. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a bundling belt limiting mechanism of an automatic bundling belt connecting device to accurately position the welding part of the bundling belt, so that the thickness of the welded bundling belt is basically the same.

[0005] A bundling belt limiting mechanism of an automatic bundling belt connecting device, the bundling belt limiting mechanism is installed on a support frame and can move between a working position and an avoidance position along a first direction. The bundling belt limiting mechanism includes a first limiting structure and a second limiting structure. When the bundling belt limiting mechanism is in the working position, the first limiting structure and the second limiting structure respectively limit a first connecting part of a first bundling belt and a second connecting part of a second bundling belt, so that the first connecting part and the second connecting part overlap each other in the thickness direction.

[0006] In one of the embodiments, the bundling belt limiting mechanism includes:

[0007] A limiting member extending along a second direction perpendicular to the first direction;

[0008] A first limiting part located at a first end of the limiting member along the second direction, and forming a first limiting step between a first side surface on one side of the limiting member along the second direction, for limiting the end surface of the first connecting part; and

[0009] 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 along the second direction, for limiting the end surface of the second connecting portion.

[0010] In one embodiment, the strapping belt limiting mechanism further includes:

[0011] The sliding plate is connected to the first fixing seat and the second fixing seat at both ends of the sliding plate along the second direction and can be slidably installed on the first fixing seat and the second fixing seat along the first direction respectively. The first fixing seat and the second fixing seat are installed on the support frame. The first end of the sliding plate along the first direction is connected to the limiting member. 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, which is used to limit a side surface in the width direction of the first connecting part. 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, which is used to limit a side surface in the width direction of the second connecting part.

[0012] In one embodiment, the first side surface of the limiting member is a plane, and the strapping limiting mechanism further includes an in-place detection component, the in-place detection component includes a sensing piece, a reset component and an in-place sensor, the sensing piece is movably mounted on the slide, one end of the sensing piece is provided with the first limiting portion, and when the sensing piece is in the initial position, it forms the first limiting step with the first side surface of the limiting member; the reset component is used to reset the sensing piece to the initial position, and the in-place sensor is used to detect the position of the sensing piece.

[0013] In one embodiment, the reset component is a spring, one end of the reset component is connected to the other end of the sensor plate opposite to the first limiting portion, and the other end of the reset component is connected to the second fixing seat.

[0014] In one embodiment, the sensor plate is rotatably mounted on the slide plate via a rotating shaft.

[0015] In one embodiment, the position sensor is a photoelectric sensor.

[0016] In one embodiment, the second limiting portion and the limiting member are an integral structure.

[0017] The strapping strap limiting mechanism of the above-mentioned strapping strap automatic connecting device ensures that the first connecting portion of the first strapping strap and the second connecting portion of the second strapping strap can be accurately aligned before welding, ensuring that the thickness of the connected portion after welding is basically consistent with the thickness of the strapping strap itself, thereby ensuring that the strapping strap after connection can pass through the head of the strapping machine without obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Stereogram of the automatic splicing device for strapping tapes in one embodiment of the present utility model;

[0019] Figure 2 is Figure 1 Stereogram of the automatic splicing device for strapping tapes with the housing hidden;

[0020] Figure 3 is Figure 1 Exploded view of the automatic splicing device for strapping tapes with the housing hidden;

[0021] Figure 4 is the Figure 2 top view of the appended

[0022] Figure 5 is the Figure 4 cross-sectional view along line C-C in

[0023] Figure 6 is Figure 1 Stereogram of the support frame equipped with the first motor and the second motor shown in

[0024] Figure 7 is Figure 1 Stereogram of the tape pressing and welding mechanism of the automatic splicing device for strapping tapes shown in

[0025] Figure 8 is Figure 1 top view of the tape pressing and welding mechanism of the automatic splicing device for strapping tapes shown in

[0026] Figure 9 is Figure 8 cross-sectional view along direction B-B;

[0027] Figure 10 is Figure 1 Stereogram of the limit and shaping assembly of the automatic splicing device for strapping tapes shown in

[0028] Figure 11 is Figure 10 Stereogram with the tool rest, cutter, and backing plate hidden;

[0029] Figure 12 Stereogram of the cam assembly;

[0030] Figure 13 Stereogram of the lever assembly;

[0031] Figure 14 Stereogram of the crank and connecting rod mechanism.

[0032] Explanation of reference numerals:

[0033] 1. Housing; 11. Housing main body; 12. Front cover; 13. First button; 14. Second button;

[0034] 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;

[0035] 3. Belt pressing and welding mechanism;

[0036] 31. Mounting seat; 314. Mounting seat body; 315. Cover plate;

[0037] 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;

[0038] 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;

[0039] 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;

[0040] 4. Limit and shaping assembly; 41. First fixing seat; 411. First fixing groove; 42. Second fixing seat; 421. Second fixing 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;

[0041] 5. First drive motor;

[0042] 6. Cam assembly; 601. Cam main shaft; 604. First cam; 605. Second cam; 606. Third cam; 607. Fourth cam; 608. Fifth cam;

[0043] 10. Lever assembly; 602. First countershaft; 603. Second countershaft; 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;

[0044] 7. Second drive motor;

[0045] 8. Crank-connecting rod mechanism; 81. Eccentric shaft; 82. Eighth connecting rod;

[0046] 91. First strapping band; 911. First connecting portion; 92. Second strapping band; 921. Second connecting portion. DETAILED DESCRIPTION

[0047] To make the above-mentioned purposes, features, and advantages of the present invention more clearly understood, the following provides a clear and complete description of the specific embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the specific details described below are only a portion of the embodiments of the present invention, and the present invention can also be implemented in many other embodiments different from those described herein. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0048] In this document, when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The directional terms such as front, back, upper, and lower are defined based on the positions of the components in the drawings and in relation to each other, and are intended only for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this utility model.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0050] See also Figures 1-5 The strapping automatic connecting device includes a support frame 2, a strapping limiting 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, and the third direction is perpendicular to the first direction and the second direction. The support frame has a first belt slot 224 for the first connecting portion of the first bundling strap 91 to pass through and a second belt slot 225 for the second connecting portion 921 of the second bundling strap 92 to pass through.

[0051] The bundling strap limiting mechanism is installed on the support frame 2. The bundling 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 the first direction. When the first limiting structure and the second limiting structure are in the working position, they are respectively used to limit the first connecting portion 911 of the first bundling strap 91 and the second connecting portion 921 of the second bundling strap 92, so that the first connecting portion 911 and the second connecting portion 921 overlap each other in the third direction.

[0052] The belt pressing and welding mechanism 3 is installed on the support frame 2, and it includes a backing plate 44, a first belt pressing assembly 32, a welding assembly 34, and a second belt pressing assembly 33. The backing plate 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 pressing position and a releasing position. When the first belt pressing assembly 32 is in the pressing position, it cooperates with the backing plate 44 to respectively fix the end of the first bundling strap 91; the second belt pressing assembly 33 can move between a pressing position and a releasing position. When the second belt pressing assembly 33 is in the pressing position, it cooperates with the backing plate 44 to fix the head of the second bundling strap 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 the first direction relative to the force applying member. When the friction member 341 is in the working position, it cooperates with the backing plate 44 to apply pressure between the stacked first connecting portion 911 and the second connecting portion 921. When the friction member 341 reciprocates along the first direction relative to the backing plate 44, it drives the first connecting portion 911 and the second connecting portion 921 to friction at high frequency, so that the first connecting portion 911 and the second connecting portion 921 are welded together and the thickness is basically the same as the thickness of the bundling strap.

[0053] The shaping mechanism is installed on the support frame 2, and it includes a first cutting knife 452 and a second cutting knife (not shown in the figure). The first cutting knife 452 and the second cutting knife are arranged along the first direction and can move telescopically. When the first cutting knife 452 and the second cutting knife extend, they cut off the excess width of the welded first connecting portion 911 and the second connecting portion 921.

[0054] The first driving device is connected to the limiting member 431 , the first belt pressing assembly 32 , the second belt pressing assembly 33 , and the transmission member; the second driving device is connected to the friction member 341 .

[0055] The automatic connecting device for strapping straps of the utility model realizes seamless connection of two rolls of strapping straps, thereby improving production efficiency. Moreover, the thickness and width of the connecting part are substantially consistent with the thickness and width of the strapping straps themselves, thereby ensuring that the strapping straps after connection can pass through the head of the strapping machine without obstruction, thereby ensuring the efficiency and stability of the strapping process.

[0056] The specific structure of the automatic connecting device for strapping belts will be described in detail below with reference to specific embodiments.

[0057] shell

[0058] The exemplary automatic strapping device also includes a housing 1, which serves as a protective device. The exemplary housing 1 comprises a housing body 11 and a front cover 12 mounted on the front side of the housing body 11. The housing body 11 houses a control circuit (not shown). A first button 13 and a second button 14 are mounted on the panel of the housing body 11, which are connected to the control circuit.

[0059] Support frame

[0060] See also 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 a plane defined by the first and second directions, and the second support plate 22 is parallel to a plane defined by the second and third directions. 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. A first belt groove 224 and a second belt groove 225 are provided at the second ends of the second support plate 22 along the third direction on both sides of the receiving cavity 223. 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 to form the receiving cavity 223 therebetween. The first ends of the first support plate unit 221 and the second support plate unit 222 along the third direction are fixed to the first support plate 21, and the second ends of the first support plate unit 221 and the second support plate unit 222 along the third direction are provided with a first belt groove 224 and a second belt groove 225, respectively. As an alternative, the second support plate 22 may be an integral structure, with a portion cut out of the second support plate 22 to form the accommodating cavity 223. The support frame 2 adopts this structure, which has the advantages of reasonable spatial layout and compact structure.

[0061] Preferably, a first bandwidth adjustment block 23 is provided on one side in the second direction at the second end of the first support plate unit 221 along the third direction. The first bandwidth adjustment block 23 and the first support plate unit 221 together form a first belt groove 224. By replacing the first bandwidth adjustment block 23 with different widths, the width of the first belt groove 224 can be adjusted to fit bundling belts of different widths. Similarly, a second bandwidth adjustment block 24 is provided on one side in the second direction at the second end of the second support plate unit 222 along the third direction. The second bandwidth adjustment block 24 and the second support plate unit 222 together form a second belt groove 225. By replacing the second bandwidth adjustment block 24 with different widths, the width of the second belt groove 225 can be adjusted to fit bundling belts of different widths.

[0062] 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 in the second direction of the second support plate 22. 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.

[0063] Belt pressing and welding mechanism

[0064] Reference Figures 7 to 9 , as an example, the belt pressing and welding mechanism 3 further includes a mounting base 31. The mounting base 31 is located at the middle position of the accommodating 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 belt pressing assembly 32 and the second belt pressing assembly 33 are installed in the installation cavity.

[0065] 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 such a split structure, which is convenient for processing.

[0066] As an example, the first belt pressing assembly 32 includes a first belt pressing member 321, a first biasing spring 322, a first transmission member 323, and a first reset member 324. One end of the first belt pressing member 321 is provided with a pressing head, 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 belt 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 belt pressing member 321 through a first connecting pin 325, and the other end is fixed on the mounting seat 31. Since the first biasing spring 322 is entirely installed in the first belt pressing member 321 and a part of the first transmission member 323 is installed in the first belt pressing member 321, the length of the belt pressing assembly is greatly shortened, the disassembly and assembly are simple, and the cost is greatly reduced.

[0067] Similarly, the second belt pressing assembly 33 includes a second belt pressing member 331, a second biasing spring 332, a second transmission member 333, and a second reset member 334. One end of the second belt pressing member 331 is provided with a pressing head, and the other two ends are inserted into the installation cavity and are 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 belt 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 belt pressing member 331 through a second connecting pin 335, and the other end is fixed on the mounting seat 31. Since the second biasing spring 332 is entirely installed in the second belt pressing member 331 and a part of the second transmission member 333 is installed in the second belt pressing member 331, the length of the belt pressing assembly is greatly shortened, the disassembly and assembly are simple, and the cost is greatly reduced.

[0068] 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 a third direction. A first guiding groove extending along a 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 biasing 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 biasing member through the connecting member 343, so that the friction member can move telescopically along the third direction with the biasing member and can reciprocate along the first direction relative to the biasing member.

[0069] As an example, the force - applying member includes a driving member 342, a third biasing spring 348, a third transmission member 344, and a third reset member 345. The 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 biasing 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.

[0070] The welding assembly 34 uses the heat generated by the friction member 341 to heat the first connecting portion 911 of the first binding tape 91 and the second connecting portion 921 of the second binding tape 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 binding tapes to mix and solidify, forming a firm connection. Moreover, it can ensure that the thickness at the interface is consistent with the binding tapes themselves.

[0071] Limit - shaping assembly

[0072] See Figure 10 、 11 As shown in, the limit - shaping assembly 4 includes a first fixing seat 41 and a second fixing seat 42. The first fixing seat 41 and the second fixing seat 42 are arranged opposite to each other along the second direction and are respectively fixed on one side of the first support plate unit 221 and the second support plate unit 222 along the second direction. The backing plate 44, the binding - tape limiting mechanism, and the shaping mechanism are all installed on the first fixing seat 41 and the second fixing seat 42.

[0073] As an example, first fixing grooves 411 and second fixing grooves 421 are respectively provided on the opposite surfaces of the first fixing seat 41 and the second fixing seat 42. The two ends of the backing plate 44 along 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 along the second direction on the side surface of the backing plate 44 facing the pressing tape and the welding mechanism 3. The second friction teeth 441, third friction teeth 442, and fourth friction teeth 443 are respectively opposite to the head of the first pressing - tape member 321, the first friction teeth 341a of the friction member 341, and the head of the second pressing - tape member 331.

[0074] As shown in the figure, the exemplary strapping limiting mechanism includes a slide 43, a limiting member 431, a first limiting portion 461a, and a second limiting portion 432. The slide 43 is located on a side of the backing plate 44 near the accommodating cavity 223 and is slidably mounted on the first and second fixing seats along a first direction. The limiting member 431 is connected to one end of the slide 43 along the first direction. A third limiting step is formed between a first side surface of the limiting member 431 along the first direction and an end surface of the first end of the slide 43 to limit the width direction of the first connecting portion. A fourth limiting step is formed between a second side surface of the limiting member 431 along the first direction and an end surface of the first end of the slide 43 to limit the width direction of the second connecting portion. The first limiting portion 461a is provided at the first end of the limiting member 431 along the second direction and forms a first limiting step between the first side surface of the limiting member 431 and the end surface of the first end of the slide 43. The second limiting portion 432 is provided at the second end of the limiting member 431 along the second direction, and forms a second limiting step between the limiting portion 432 and the second side surface of the limiting member 431 to limit the end of the first connecting portion. The first limiting step and the third limiting step limit the first connecting portion, while the second limiting step and the fourth limiting step limit the second connecting portion, so that the first connecting portion 911 and the second connecting portion 921 overlap in the third direction.

[0075] In one embodiment, the strapping limiting mechanism as an example further includes an in-place detection component, which includes a sensing piece 461, a fourth reset component 462 and an in-place sensor 463. The sensing piece 461 is rotatably mounted on the slide 43. When the sensing piece 461 is in the initial position, one end of the sensing piece 461 is provided with a first limiting portion 461a. The first limiting portion 461a and the surface of the limiting member 431 along the first side of the first direction form a limiting step to limit the head end of the first strapping strap. The fourth reset component 462 is used to reset the sensing piece 461. The in-place sensor 463 is used to detect the position of the sensing piece 461. As an example, the in-place sensor 463 is a photoelectric sensor. In the initial state, the first limiting portion 461a of the sensing plate 461 forms a limiting step with the surface of the limiting member 431. When the end of the first strapping strap 91 contacts the first limiting portion 461a of the sensing plate 461, the sensing plate 461 rotates, 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 plate 461 is reset by the fourth reset member 462.

[0076] As an example, the second limiting portion 432 and the limiting member 431 are an integral structure.

[0077] The bundling belt limiting mechanism of this structure ensures that the first connecting part 911 of the first bundling belt and the second connecting part 921 of the second bundling 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 interface after welding will be flat and have sufficient strength.

[0078] The shaping mechanism as an example further includes a tool holder 451, a guide post 454, and a transmission shaft 455. The tool holder 451 is located on the side of the backing plate 44 opposite to the pressing belt and welding mechanism 3 and can move between an extended position and a retracted position along a third direction. The first cutter 452 and the second cutter are arranged opposite to each other along a second direction. One end of the first cutter 452 and the second cutter along the third direction is fixed on the tool holder 451, and the other end passes through the perforation on the backing plate 44. Both the guide post 454 and the transmission shaft 455 extend along the third direction. The guide post 454 cooperates with the guide hole on the second fixed seat 42 to guide the movement of the tool 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.

[0079] The shaping mechanism trims and shapes the interface of the welded bundling belt, ensuring the flatness and neatness of the interface, removing the excess material or protrusions that may be generated during the welding process, and ensuring that the width of the welded bundling belt is consistent with the original bundling belt. This is very important for the bundling belt to smoothly pass through the head of the bundling machine and other guiding mechanisms during subsequent use, avoiding failures caused by inconsistent interface dimensions.

[0080] The first driving device

[0081] 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.

[0082] 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 along the second direction. Both ends of the cam main shaft 601 are respectively 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 mounted on the cam main shaft 601 and rotate synchronously with the cam main shaft 601.

[0083] The lever assembly 10 includes a first auxiliary shaft 602, a second auxiliary 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 auxiliary shaft 602 and the second auxiliary shaft 603 are respectively 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 mounted on the first auxiliary shaft 602. One end of the first connecting rod 609 is provided with a fourth roller 618, and the fourth roller 618 is in contact with the surface of the first cam 604. The other end of the first connecting rod 609 is in contact with 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 is in contact with the surface of the second cam 605. The other end of the second connecting rod 610 is in contact with 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 is in contact with the surface of the fourth cam 607. The other end of the third connecting rod 611 is in contact with the surface of the second roller 336 of the second belt pressing assembly 33.

[0084] One end of the fourth connecting rod 612 is rotatably mounted on the second auxiliary shaft 603. The other end of the fourth connecting rod 612 is hinged to one end of the fifth connecting rod 613, and the other end of the fifth connecting rod 613 is connected to the slide plate 43. A seventh roller 621 is provided in the middle of the fifth connecting rod 613, and the surface of the seventh roller 621 is in contact with 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 connecting rod 612.

[0085] One end of the sixth connecting rod 614 is rotatably mounted on the second auxiliary shaft 603. The other end of the sixth connecting rod 614 is hinged to one end of the seventh connecting rod 615, and the other end of the seventh connecting rod 615 is connected to the connecting block 456. An eighth roller 622 is provided in the middle of the sixth connecting rod 614, and the surface of the eighth roller 622 is in contact with the surface of the fifth cam 608.

[0086] The second driving device

[0087] 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.

[0088] Such as Figure 14As shown in the figure, the crank - connecting rod mechanism 8 includes an eccentric shaft 81 and an eighth connecting rod 82. The eccentric shaft 81 is rotatably installed 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 part, and the eccentric part is connected to one end of the eighth connecting rod 82. The other end of the eighth connecting rod 82 is connected to the friction part 341.

[0089] Working principle

[0090] I. Upper belt preparation

[0091] Manually insert the end of the first binding belt 91 from the first belt groove 224 into the stopper 431, triggering the in - place inductor 463, causing the fourth cam 607 to rotate. Through the third connecting rod 611, the first belt - pressing assembly 32 is lifted to press the end of the first binding belt 91.

[0092] Manually insert the head of the first binding belt 91 from the second belt groove 225 into the stopper 431, press the first button 13, causing the first cam 604 to rotate. Through the first connecting rod 609, the second belt - pressing assembly 33 presses the head of the first binding belt 91. At this time, the third cam 606 drives the slide plate 43 to retract, and the mechanism enters the automatic operation state.

[0093] II. Automatic connection

[0094] During packaging, press the second button 14, and the binding - belt automatic connection 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 part 911 of the first binding belt 91 and the second connecting part 921 of the second binding belt 92. The second driving motor 7 drives the friction part 341 through the crank - connecting rod mechanism 8 for friction welding, so that the final thickness at the welding position is the same as the thickness of the binding belt (the thickness of the two belts becomes the thickness of one belt after welding). The cam assembly 6 continues to rotate to release the pressure of the pressing knife, making the belt loose. Immediately afterwards, the fifth cam 608 rotates to drive the first cutter 452 and the second cutter to trim the welding position, making the welding position the same width as the binding belt. All mechanisms return to the origin, and at this time, the belt - connecting work ends.

[0095] The binding - belt automatic connection device of the embodiment of the present utility model optimizes the continuous supply of the binding belt, realizes the seamless connection of two rolls of binding belts through automation technology, avoids equipment downtime caused by replacing the binding - belt 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 packaging operation.

[0096] 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 for the purpose of describing specific embodiments only and are not intended to limit this utility model.

Claims

1. The bundling tape limiting mechanism of an automatic butt-joint device for bundling tapes, characterized in that, The bundling belt limiting mechanism is installed on the support frame and can move between a working position and an avoidance position along a first direction. The bundling belt limiting mechanism includes a first limiting structure and a second limiting structure. When the bundling belt limiting mechanism is in the working position, the first limiting structure and the second limiting structure respectively limit the first connecting portion of the first bundling belt and the second connecting portion of the second bundling belt, so that the first connecting portion and the second connecting portion overlap each other in the thickness direction.

2. The bundling strap limiting mechanism of the automatic butt-joint device for bundling straps according to claim 1, characterized in that The bundling belt limiting mechanism includes: a limiting member extending along a second direction perpendicular to the first direction; 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 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.

3. The bundling tape limiting mechanism of the automatic connection device for bundling tapes according to claim 2, characterized in that The bundling belt limiting mechanism further includes: 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 mounted on the support frame. The first end of the sliding plate along the first direction is connected to the limiting member. 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. 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.

4. The strapping strap limiting mechanism of the strapping strap automatic connecting device according to claim 3, characterized in that: The first side surface of the limiting member is a plane. The bundling belt limiting mechanism further includes a position-in-place detection assembly. The position-in-place detection assembly includes an induction sheet, a reset component and a position-in-place inductor. 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 between the induction sheet and the first side surface of the limiting member; the reset component is used to reset the induction sheet to the initial position, and the position-in-place inductor is used to detect the position of the induction sheet.

5. The bundling tape limiting mechanism of the automatic connection device for bundling tapes 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 induction sheet opposite to the first limiting portion, and the other end of the reset component is connected to the second fixed seat.

6. The bundling strap limiting mechanism of the automatic connection device for bundling straps according to claim 4, characterized in that, The induction sheet is rotatably mounted on the sliding plate through a rotating shaft.

7. The strapping strap limiting mechanism of the strapping strap automatic connecting device according to claim 4, characterized in that: The position-in-place inductor is a photoelectric sensor.

8. The bundling strap limiting mechanism of the automatic connection device for bundling straps according to claim 2, characterized in that, The second limiting portion and the limiting member are of an integral structure.

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