CN114229082B - A packing head for a packing machine - Google Patents
A packing head for a packing machine Download PDFInfo
- Publication number
- CN114229082B CN114229082B CN202210123222.7A CN202210123222A CN114229082B CN 114229082 B CN114229082 B CN 114229082B CN 202210123222 A CN202210123222 A CN 202210123222A CN 114229082 B CN114229082 B CN 114229082B
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- Prior art keywords
- belt
- head
- tension
- spring
- driving pulley
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/22—Means for controlling tension of binding means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/24—Securing ends of binding material
- B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Abstract
本发明公开一种用于打包机的打包头，包括安装在机架上的输送拉紧单元和连接单元；连接单元用于焊接打包带的首尾端重叠处；输送拉紧单元包括高拉力主动带轮、与高拉力主动带轮配合形成第一打包带通道的第一压紧轮组件、低拉力主动带轮以及与低拉力主动带轮配合形成第二打包带通道的第二压紧轮组件；第一压紧轮组件包括第一杠杆和分别铰接在第一杠杆两端部的从动轮结构和导向自由轮；第一杠杆上靠近导向自由轮的一侧连接有第一拉簧。本发明利用第一拉簧拉动第一压紧轮组件的第一杠杆，实现第一压紧轮组件与高拉力主动带轮的分离，能够在低拉力主动带轮输送打包带的过程中不会受到高拉力主动带轮的影响，保证打包带的快速有效输送。
The present invention discloses a baling head for a baling machine, comprising a conveying and tensioning unit and a connecting unit installed on a frame; the connecting unit is used for welding the overlapping parts of the head and tail ends of the baling belt; the conveying and tensioning unit comprises a high-tension driving pulley, a first pinching wheel assembly that cooperates with the high-tension driving pulley to form a first baling belt channel, a low-tension driving pulley, and a second pinching wheel assembly that cooperates with the low-tension driving pulley to form a second baling belt channel; the first pinching wheel assembly comprises a first lever and a driven wheel structure and a guide free wheel that are respectively hinged at both ends of the first lever; a first tension spring is connected to one side of the first lever close to the guide free wheel. The present invention uses the first tension spring to pull the first lever of the first pinching wheel assembly to separate the first pinching wheel assembly from the high-tension driving pulley, so that the low-tension driving pulley will not be affected by the high-tension driving pulley when conveying the baling belt, thereby ensuring the rapid and effective conveying of the baling belt.
Description
Technical Field
The invention relates to the technical field of packing machines, in particular to a packing head for a packing machine.
Background
A strapping machine is an apparatus for strapping a strap onto a surface of an article and generally includes a frame and a strapping head. The toe cap is subjected to the steps of tape feeding, tape feeding in place, tape pressing head end (free end), tape collecting, tape pressing tail end (wireless long end), welding, tape cutting, tape spitting, head resetting and the like in the automatic packaging process. In order to complete all the steps, the header needs to be provided with structures such as a tape feeding device, a tape withdrawing device, a joint connection cutting device, a transmission system, a track frame, a control device and the like. Thus, the header is a core component in the overall baler. There are also designs and applications for the header in the prior art, but there are also some areas where improvements are needed.
In the process of conveying packing belts by the packer, the packer generally only comprises a driving belt wheel, rotates positively in the belt conveying process and rotates reversely in the belt collecting process, and the packing belt can be driven to move only by enough friction force between the driving belt wheel and the packing belt in the belt conveying process or the belt collecting process. In order to enable enough friction force between the packing belt and the driving belt wheel, a pressing wheel is generally arranged, and the pressing wheel generally adopts a spring mechanism to realize the pressing action. However, the requirement for the compression degree of the packing belt is different in the process of belt feeding and belt receiving, if the moment is in a high pressure state, the rapid belt feeding in the process of belt feeding is not facilitated, and if the moment is in a low pressure state, the high tension compression in the process of belt receiving cannot be completed.
The chinese patent with application publication number CN 112027238A discloses a strapping machine, which is provided with a feeding roller and a pressing roller, wherein the pressing roller compresses the strapping belt on the feeding roller through a connecting rod, but the process of compressing is not explicitly described in the scheme, and according to the description of the prior art, it is only able to apply a certain elastic force or tensile force by means of a spring, so that the pressing roller can be pushed or pulled to realize the compressing function of the pressing roller. Therefore, the scheme is applied to the application of springs in the prior art, if the pressing force of the pinch roller is required to be increased, the spring can be improved towards the direction of improving the springs, for example, the spring with a larger elastic coefficient is replaced or the deformation degree of the spring is increased, if the pressing force of the pinch roller is required to be reduced, the spring with a smaller elastic coefficient can be replaced or the deformation degree of the spring is reduced, but no matter what kind of change is provided is only one pressing state, and the real-time adjustment cannot be carried out according to different working conditions of belt feeding and belt receiving.
The chinese patent with the publication number CN 212501203U discloses an integral packing machine head and a packing device, in which a driving wheel for transporting packing belts is provided, and a compressing assembly is provided, the compressing assembly is used for compressing the packing belts on the surface of the driving wheel, so as to ensure smooth transportation and avoid slipping, the compressing assembly comprises a wheel seat, a compressing wheel and a compressing spring, the compressing wheel is compressed on the driving wheel by using the elasticity of the compressing spring, but the elasticity of the spring is limited, the compressing force can be increased only by increasing the elasticity coefficient and the deformation degree of the spring, and the effect is not ideal in practice. Also, this scheme also can not carry out real-time adjustment and compress tightly the state of subassembly according to the different operating modes of sending the area and receiving.
According to the scheme, the compressing structure of the driving belt wheel in the prior art cannot be adjusted according to working conditions, so that the compressing state cannot be changed, and good belt feeding and collecting effects cannot be achieved. Therefore, how to realize different pressures of the driving pulley under different working conditions of belt feeding and belt receiving is a technical problem to be solved.
Disclosure of Invention
The invention aims to provide a packing head for a packing machine, which solves the problems in the prior art, a first compression wheel assembly and a second compression wheel assembly are respectively matched with a high-tension driving pulley and a low-tension driving pulley, and a first tension spring is used for pulling a first lever of the first compression wheel assembly to separate the first compression wheel assembly from the high-tension driving pulley, so that the high-tension driving pulley is not influenced by the high-tension driving pulley in the process of conveying packing belts by the low-tension driving pulley, and the quick and effective conveying of the packing belts is ensured.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides a packing head for a packer, which comprises a conveying and tensioning unit and a connecting unit, wherein the conveying and tensioning unit and the connecting unit are arranged on a rack;
The connecting unit comprises a head clamping cutter, a tail clamping cutter and a welding head, wherein the head clamping cutter and the tail clamping cutter are respectively positioned on the moving track of the packing belt conveyed by the conveying and tensioning unit and respectively clamp the head and the tail of the packing belt, and the welding head is used for welding the overlapping part of the head end and the tail end of the packing belt;
The conveying and tensioning unit comprises a high-tension driving pulley, a first compression pulley assembly, a low-tension driving pulley and a second compression pulley assembly, wherein the first compression pulley assembly and the low-tension driving pulley are matched with the Gao Lali driving pulley to form a first packing belt channel, the second compression pulley assembly and the low-tension driving pulley are matched with each other to form a second packing belt channel, the first compression pulley assembly comprises a first lever, a driven wheel structure and a guide free wheel, the driven wheel structure and the guide free wheel are respectively hinged to two ends of the first lever, a packing belt sequentially penetrates through the first packing belt channel, the second packing belt channel and is attached to the guide free wheel to carry out belt receiving and conveying, one side, close to the guide free wheel, of the first lever is connected with a first tension spring, and the first tension spring is used for pulling the first lever to drive the driven wheel structure to be far away from the Gao Lali driving pulley.
Preferably, the second pinch roller assembly comprises a second lever, one end of the second lever is hinged with a pinch roller structure, the other end of the second lever is connected with a second tension spring, one side, close to the pinch roller structure, of the second lever is provided with a second rotating shaft, and the second tension spring is used for pulling the second lever to drive the pinch roller structure to be close to the low-tension driving belt pulley.
Preferably, a welding motor is installed on the frame, and the welding motor is in power connection with the welding head.
Preferably, the Gao Lali driving pulley is connected with a high-tension servo motor, the low-tension driving pulley is connected with a low-tension servo motor, and the high-tension servo motor and the low-tension servo motor are both installed on the frame.
Preferably, the connecting unit comprises a cam connecting rod structure and a first baffle which is matched with the head clamping cutter, the tail clamping cutter and the welding head in a working position respectively;
The cam connecting rod structure comprises a connecting rod, a cam and a spring, wherein the cam and the spring are connected to the same side of a rotating shaft on the connecting rod, the cam and the spring have opposite effects on the rotating direction of the connecting rod, the end part of the connecting rod is connected with a working structure, the spring can enable the working structure to move towards a working position, and the cam can enable the working structure to move away from the working position;
The connecting rod comprises a first connecting rod, a second connecting rod and a third connecting rod, the cams comprise a first cam, a second cam and a third cam, the springs comprise a first spring, a second spring and a third spring, and the operation structure comprises a welding head, a tail clamping knife and a head clamping knife.
Preferably, the cam link structure is in power connection with a position control motor.
Preferably, the belt outlet end of the guide freewheel is provided with a belt groove assembly, the belt groove assembly comprises an L-shaped base, L-shaped baffles positioned on two sides of the L-shaped base and a belt returning baffle positioned on the outer side of the L-shaped base, a belt feeding channel and a belt returning channel are respectively formed on the inner side and the outer side of the L-shaped base, and a packing belt overlapping section is formed at the intersection of the belt feeding channel and an extension line of the belt returning channel.
Preferably, the inlet of the tape feeding channel is provided with a pipe position strip, the packing tape is positioned between the pipe position strip and the L-shaped base, the outlet of the tape feeding channel is provided with a steering bottom tape head, and the outlet of the tape returning channel is provided with a steering top tape head.
Preferably, the tape feed end of the first tape transport channel is provided with a tape feed short groove provided with an arc-shaped tip facing the first tape transport channel.
Preferably, the strap feeding end of the second strapping strand passage is provided with a reverse-engagement strap slot for connecting the first and second strapping strand passages.
Compared with the prior art, the invention has the following technical effects:
(1) The high-tension driving belt pulley and the low-tension driving belt pulley are respectively matched with the first compression wheel assembly and the second compression wheel assembly, and the first tension spring is used for pulling the first lever of the first compression wheel assembly to separate the first compression wheel assembly from the high-tension driving belt pulley, so that the high-tension driving belt pulley is not influenced by the high-tension driving belt pulley in the process of conveying the packing belt by the low-tension driving belt pulley, and the packing belt is ensured to be conveyed rapidly and effectively;
(2) According to the invention, a certain pulling force is provided for the second lever by the second tension spring, so that the packing belt can be tightly pressed on the low-pulling force driving belt pulley by the pressing wheel structure, and the slipping of the packing belt can be avoided when the low-pulling force driving belt pulley runs;
(3) The welding head is arranged to weld the packing belt, the welding head is driven by the cam connecting rod structure, the cam connecting rod structure comprises the first connecting rod, the first cam and the first spring which are connected to the same side of the rotating shaft on the first connecting rod, the first spring can be always in a stretching state, the welding head and the first baffle are matched by using tension to weld the packing belt, the advantages of the spring can be fully exerted, bending deformation is avoided, a stable compression state is ensured, and the welding effect can be improved;
(4) The welding motor is arranged to provide welding head power, the position of the cam connecting rod structure is controlled by the position control motor to control the action states of the welding head, the head clamping knife, the tail clamping knife, the middle clamping knife and the like, the low tension servo motor is used for providing low tension for conveying or tensioning the packing belt, the high tension servo motor is used for providing high tension for tensioning the packing belt, in a word, the operation of different structures or components in the packing head is controlled by different motors, the system structure can be simplified, and the level of automatic control is improved;
(5) The invention forms a belt conveying channel and a belt returning channel for conveying the packing belt through the L-shaped base, the L-shaped baffle and the belt returning baffle, can effectively restrict the conveying direction and the position of the packing belt no matter the packing belt is conveyed in the forward direction or the reverse direction, ensures that the packing belt is conveyed according to a specified path, provides structural support for conveying and tensioning the packing belt, and further, the inlet of the belt conveying channel is provided with a pipe position strip, the outlet is provided with a steering bottom belt head, the outlet of the belt returning channel is provided with a steering top belt head, and further restricts the conveying path of the packing belt.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic elevational view of the transport tensioning unit of the present invention;
FIG. 3 is a schematic perspective view of a conveying and tensioning unit according to the present invention;
FIG. 4 is a schematic view of an exploded view of a high tension drive pulley and a first pinch roller assembly of the present invention;
FIG. 5 is a schematic view of an exploded view of a low tension drive pulley and second pinch roller assembly of the present invention;
FIG. 6 is a schematic diagram of an exploded view of a slotted assembly of the present invention;
FIG. 7 is a schematic cross-sectional view of a slotted assembly of the present invention;
FIG. 8 is a schematic view of the structure of the feed belt short belt slot of the present invention;
FIG. 9 is a schematic view of a structure of a reverse-hinge strap slot according to the present invention;
FIG. 10 is a schematic diagram of an exploded construction of a connection unit according to the present invention;
FIG. 11 is a schematic cross-sectional view of a connecting unit according to the present invention;
FIG. 12 is a schematic view of a first link structure of the connection unit of the present invention;
FIG. 13 is a schematic view of a fourth link structure of the connecting unit of the present invention;
1, conveying and tensioning units; 2, a belt groove component, 3, a connecting unit, 4, a low-tension servo motor, 5, a high-tension servo motor, 6, a position control motor, 7, a welding motor;
11. High-tension driving belt pulley, 12, low-tension driving belt pulley, 13, first lever, 14, driven wheel structure, 141, connecting plate, 142, driven belt pulley, 143, hinging shaft, 15, guiding free wheel, 16, first rotating shaft, 17, first tension spring, 18, high-tension supporting plate, 19, compressing belt pulley, 110, second lever, 111, second rotating shaft, 112, U-shaped bracket, 113, second tension spring, 114, tension adjusting mechanism, 115, rotating supporting plate, 116, base plate;
21. an L-shaped base; 22, L-shaped baffle plates; 23, turning the bottom belt head, 24, turning the top belt head, 25, identifying a belt sensor, 26, a belt returning baffle, 27, a belt feeding short belt groove, 28, a different connection turning belt groove, 29, a pipe position strip;
31. Middle clamping knife, 32, welding head, 33, tail clamping knife, 34, head clamping knife, 35, second connecting rod, 36, first connecting rod, 361, first meshing part, 362, first working part, 363, first spring connecting part, 364, third rotating shaft, 37, third connecting rod, 38, second spring, 39, first spring, 310, third spring, 311, second cam, 312, fourth cam, 313, first cam, 314, fifth cam, 315, third cam, 316, fourth connecting rod, 3161, fourth meshing part, 3162, fourth working part, 3163, fourth spring connecting part, 3164, fourth rotating shaft, 317, fifth connecting rod, 318, fourth spring, 319, fifth spring, 320, first baffle, 321, second baffle, 322, welding connecting rod, 323, cutter, 324 and synchronizing wheel assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a packing head for a packing machine, which solves the problems in the prior art, a first compression wheel assembly and a second compression wheel assembly are respectively matched with a high-tension driving belt wheel and a low-tension driving belt wheel, and a first tension spring is used for pulling a first lever of the first compression wheel assembly to separate the first compression wheel assembly from the high-tension driving belt wheel, so that the high-tension driving belt wheel is not influenced by the high-tension driving belt wheel in the process of conveying packing belts by the low-tension driving belt wheel, and the quick and effective conveying of the packing belts is ensured.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-13, the invention provides a packing head for a packing machine, which comprises a conveying and tensioning unit 1 and a connecting unit 3, wherein the conveying and tensioning unit 1 is arranged on a machine frame, the conveying and tensioning unit 1 is used for conveying packing belts or tensioning the packing belts in the process of connecting the head end and the tail end of the packing belts, and the connecting unit 3 is used for realizing pressing and welding connection of the head end and the tail end of the packing belts after the packing belts are conveyed in place. The connecting unit 3 comprises a head clamping cutter 34, a tail clamping cutter 33 and a welding head 32, wherein the head clamping cutter 34 and the tail clamping cutter 33 are respectively positioned on the moving track of the packing belt conveyed by the conveying and tensioning unit 1 and respectively clamp the head and the tail of the packing belt, and the welding head 32 is used for welding the overlapping part of the head and the tail ends of the packing belt.
The conveying and tensioning unit 1 comprises a high-tension driving pulley 11 and a low-tension driving pulley 12, the high-tension driving pulley 11 and the low-tension driving pulley 12 are connected with power mechanisms, the power mechanisms can adopt the same driving motor or respectively correspond to the driving motors, and moment change can be carried out by adopting a gear assembly and other moment-changing mechanisms when the same driving motor is adopted. The high tension driving pulley 11 is matched with the first compacting wheel assembly to form a first packing belt channel, the packing belt is compacted and conveyed by the high tension driving pulley 11 and the first compacting wheel assembly in the first packing belt channel, the low tension driving pulley 12 is matched with the second compacting wheel assembly to form a second packing belt channel, and the packing belt is compacted and conveyed by the low tension driving pulley 12 and the second compacting wheel assembly in the second packing belt channel. The high tension driving pulley 11 may provide a high tension for the condition of high tension tightening the strapping band, and the low tension driving pulley 12 may provide a low tension for the condition of low tension tightening or rapid delivery of the strapping band. The first pinch roller assembly comprises a first lever 13, a driven wheel structure 14 and a guide freewheel 15, wherein the driven wheel structure 14 and the guide freewheel 15 are respectively hinged to two end parts of the first lever 13, a rotary supporting plate 115 can be arranged on the first lever 13, the rotary supporting plate 115 is arranged on two sides of the first lever 13 and clamps the guide freewheel 15 in the middle, and a rotating shaft for the guide freewheel 15 to rotate is arranged on the rotary supporting plate 115. The first lever 13 is rotatable about its fulcrum (e.g., the first pivot 16) and the other end of the first lever 13 rotates in the same direction about the fulcrum when a force is applied to the other end. The packing belt sequentially passes through the first packing belt channel and the second packing belt channel and is attached to the guide free wheel 15 for belt collection and transmission. When the packing belt is tightened, reverse thrust is provided to the guide freewheel 15, and under the action of the force, the first lever 13 rotates around the fulcrum, so that the driven wheel structure 14 can be pressed towards the high-tension driving pulley 11, and further, the packing belt is tightened more, the pressure is higher, so that enough clamping force for the packing belt can be provided in the tightening process of the packing belt, and the slipping of the packing belt is avoided. When the strapping tape is conveyed rapidly or is tensioned with low tension, the strapping tape is tightly pressed and conveyed by the combined action of the low tension driving pulley 12 and the second pressing pulley assembly, and at this time, a certain resistance to the conveying of the strapping tape may be caused by the high tension driving pulley 11 and the driven pulley structure 14. Therefore, a first tension spring 17 is connected to one side of the first lever 13, which is close to the guiding freewheel 15, and the first tension spring 17 is used for pulling the first lever 13 to drive the driven wheel structure 14 to be far away from the high-tension driving pulley 11, at this time, a certain gap is formed between the driven wheel structure 14 and the high-tension driving pulley 11, so that the packing belt can smoothly pass through. The conveying and tensioning unit 1 is provided with the high-tension driving belt pulley 11 and the low-tension driving belt pulley 12, a first compression wheel assembly and a second compression wheel assembly are respectively matched, and the first tension spring 17 is utilized to pull the first lever 13 of the first compression wheel assembly, so that the first compression wheel assembly is separated from the high-tension driving belt pulley 11, the high-tension driving belt pulley 11 is not influenced in the process of conveying the packing belt by the low-tension driving belt pulley 12, and the rapid and effective conveying of the packing belt is ensured.
As shown in fig. 4, the driven pulley structure 14 includes a connection plate 141, and a hinge shaft 143 and two driven pulleys 142 rotatably connected to the connection plate 141, respectively, the connection plate 141 is used as a support structure for the hinge shaft 143 and the two driven pulleys 142, and the three can be arranged in a triangle, and the hinge shaft 143 is located at a side of the two driven pulleys 142 away from the high-tension driving pulley 11, by controlling the position of the hinge shaft 143, the driven pulleys 142 can be pressed against the high-tension driving pulley 11, and a strapping band channel is formed between the two driven pulleys 142 and the tread of the high-tension driving pulley 11, that is, by controlling the position of the hinge shaft 143, the strapping band can be pressed between the two driven pulleys 142 and the high-tension driving pulley 11. The two driven pulleys 142 and the high-tension driving pulley 11 are distributed in a delta shape, when the position of the hinge shaft 143 is adjusted, the two driven pulleys 142 are tangential to the high-tension driving pulley 11 and are pressed towards the center direction of the high-tension driving pulley 11 as much as possible, so that the pressed state can be ensured, and dislocation is avoided.
As shown in fig. 2 to 3, the conveying and tensioning unit 1 may include a substrate 116, where the high-tension driving pulley 11, the first pinch roller assembly, the low-tension driving pulley 12 and the second pinch roller assembly are all mounted on the substrate 116, and the substrate 116 is used as a bearing structure, so that the relative positional relationship of each mounting component can be ensured.
The transport tensioning unit 1 may further comprise a high tension support plate 18, the high tension support plate 18 being arranged parallel to the base plate 116, both of which may be fixedly mounted on the frame. The two ends of the high tension driving pulley 11 are respectively rotatably mounted on the high tension supporting plate 18 and the base plate 116, and the high tension driving pulley can be mounted by a bearing arrangement mode. By adding the high-tension supporting plate 18 and matching the high-tension supporting plate with the base plate 116, both ends of the high-tension driving pulley 11 can be effectively supported, and stable operation of the high-tension driving pulley 11 can be ensured in the process that the high-tension driving pulley 11 provides high tension to drive the packing belt to move.
The first lever 13 is provided with a first rotating shaft 16 near one side of the driven wheel structure 14, the first rotating shaft 16 is equivalent to a fulcrum of the first lever 13, and the first lever 13 can rotate around the first rotating shaft 16, so that the first lever 13 plays a role in torque amplification. The two ends of the first rotating shaft 16 can be respectively rotatably installed on the high tension supporting plate 18 and the base plate 116, and the high tension supporting plate 18 and the base plate 116 are utilized to provide effective support, so that the first lever 13 can stably operate when the first lever rotates to apply force.
Referring to fig. 5, the second pinch roller assembly may include a second lever 110, one end of the second lever 110 is hinged with a pinch roller structure, the pinch roller structure is used for compressing the packing belt on the low tension driving pulley 12, the second lever 110 is configured to provide a moment amplifying effect, so as to improve the compressing force of the pinch roller structure relative to the low tension driving pulley 12, and further avoid the slipping phenomenon of the packing belt during the movement of the packing belt. The other end of the second lever 110 is connected with a second tension spring 113, one side of the second lever 110, which is close to the pinch roller structure, is provided with a second rotating shaft 111, and under the action of the second tension spring 113, the power for rotating the second lever 110 around the second rotating shaft 111 can be provided, so that the second tension spring 113 is utilized to pull the second lever 110 to drive the pinch roller structure to be close to the low-tension driving pulley 12.
One end of the second tension spring 113 is connected to the second lever 110, the other end of the second tension spring 113 can be connected with a tension adjusting mechanism 114, the tension adjusting mechanism 114 comprises a support installed on the base plate 116, a bolt penetrating through the support and a nut screwed on the bolt, the end portion of the bolt is connected with the second tension spring 113, the second tension spring 113 and the nut are respectively located on two sides of the support, when the nut is rotated, the nut is abutted to the support, at the moment, the bolt can axially move, the stretching amount of the second tension spring 113 can be adjusted, the tension of the second tension spring 113 applied to the second lever 110 is adjusted, and finally the compression force of the compression wheel structure relative to the low-tension driving pulley 12 is achieved.
The pinch roller structure may include a U-shaped bracket 112, two support arms of the U-shaped bracket 112 are rotatably provided with a pinch roller 19, a second rotating shaft 111 parallel to the pinch roller 19 is provided at the bottom of the U-shaped bracket 112, and the U-shaped bracket 112 can drive the pinch roller 19 to rotate around the second rotating shaft 111, so as to adjust the pressure of the pinch roller 19 to pinch the low-tension driving roller 12. The second rotating shaft 111 is mounted on the base plate 116, and the base plate 116 is used for supporting the rotation of the second rotating shaft 111 and further supporting the U-shaped bracket 112. A second strapping band passage is formed between the pinch pulley 19 and the tread of the low tension drive pulley 12.
The second lever 110 may be L-shaped, the bottom edge of the L-shaped second lever 110 is connected to the U-shaped bracket 112, and the bottom edge is the same as the extending direction of the arm of the U-shaped bracket 112, and the vertical edge of the L-shaped second lever 110 is connected to the second tension spring 113, where the second tension spring 113 may be also located in the extending direction of the arm of the U-shaped bracket 112.
As shown in fig. 1, a welding motor 7 is mounted on the frame, and the welding motor 7 is in power connection with a welding head 32. The welding motor 7 drives the driven eccentric shaft to rotate through the synchronous wheel assembly 324, and the welding connecting rod 322 swings, so that the welding head 32 can be driven to perform friction welding relative to the packing belt.
The high-tension driving pulley 11 can be connected with the high-tension servo motor 5, the low-tension driving pulley 12 can be connected with the low-tension servo motor 4, and the output of high tension and low tension can be realized by respectively controlling the independent high-tension servo motor 5 and the low-tension servo motor 4, so that the mechanical structure is simple, and the automatic control is convenient to realize. The high-tension servo motor 5 and the low-tension servo motor 4 can be mounted on the base plate 116, and then effective support and fixation of the high-tension driving pulley 11, the high-tension servo motor 5, the low-tension driving pulley 12 and the low-tension servo motor 4 are realized through the base plate 116.
As shown in fig. 10 to 13, the connection unit 3 includes a cam link structure and a first baffle 320 that is respectively engaged with the working structures (the head clamping blade 34, the tail clamping blade 33 and the welding head 32) in the working position. The cam connecting rod structure can comprise the same cam shaft and a plurality of connecting rods axially arranged on the cam shaft at intervals, the connecting rods can be pushed to rotate when the cam is in a pushing process by utilizing rotation of the cam, and the cam is in a return stroke by means of tension of a spring. The work station as referred to herein refers to the location where the work process is completed and the control work structure is able to reach and leave the work station to complete the process of strapping the strap connection. The welding head 32 is used for welding the end to end of the packing belt into a ring shape in a friction action mode, and packing work of the packed objects is achieved. The cam link structure comprises a first link 36, a first cam 313 and a first spring 39 which are connected to the same side of a rotating shaft on the first link 36, wherein the action effect of the first cam 313 and the first spring 39 on the first link 36 (the direction of rotating the first link 36 around the rotating shaft under the condition that the force application directions are the same) is the same according to the connection position of the first cam 313 and the first spring 39 on the first link 36, the end part of the first link 36 is connected with a welding head 32, in order to realize the control of the welding head 32, the action of the first cam 313 and the first spring 39 on the rotating direction of the first link 36 is opposite, namely, the first spring 39 can enable the welding head 32 to move to a working position, so that the welding head 32 is matched with the first baffle 320, the head end and the tail end of a packing belt can be overlapped together, after the welding is completed, the first cam 313 can enable the welding head 32 to move away from the working position, the clamping of the packing belt is released, and the packing belt can be disconnected from the device. The invention is provided with the welding head 32 for welding and connecting the packing belt, and the welding head 32 is driven by a cam connecting rod structure, and the cam connecting rod structure comprises a first connecting rod 36, a first cam 313 and a first spring 39 which are connected on the same side of a rotating shaft on the first connecting rod 36.
As shown in fig. 10, the end of the first link 36 may be provided with a cutter 323 for cutting the strapping tape in addition to the welding head 32, where the cutter 323 and the welding head 32 are pushed to cut and press the welding strapping tape wireless end by a push block (middle clamp knife 31) of the end of the first link 36, and the cutter 323, the welding head 32, and the push block (middle clamp knife 31) are relatively independent units so as not to affect each other during vibration friction of the welding head 32. The cutter 323 can reach the working position with the packing belt along with the action of the first connecting rod 36 along with the welding head 32, and can cut off the tail end (wireless end) of the packing belt to form a ring shape of the packing belt while the welding head 32 completes friction welding, thereby completing the process of connecting the packing belt.
The welding head 32 is installed on the middle clamping knife 31, the middle clamping knife 31 is hinged to the first connecting rod 36, the welding head 32 is driven to act through the action of the middle clamping knife 31, meanwhile, the welding head 32 is connected to the welding connecting rod 322, the welding connecting rod 322 is connected to the welding motor 7 through an eccentric shaft, the eccentric shaft and the welding connecting rod 322 are driven to act through the welding motor 7, and further the welding head 32 can be driven to perform friction welding relative to the packing belt. Further, since the welding head 32 is connected to both the center clamp 31 and the welding link 322, the welding head 32 can achieve friction welding by the welding link 322 while obtaining a certain clamping force by the center clamp 31, and thus the welding effect can be ensured.
The operation structure can also comprise a tail clamping knife 33, wherein the tail clamping knife 33 is used for clamping the tail part (namely, the wireless end) of the packing belt, so that the packing is prevented from loosening in the welding process, and further, the waste of the packing belt caused by unqualified packing quality or the need of repacking caused by loosening the packing is avoided. The tail clamping knife 33 can clamp the tail of the packing belt through the cooperation of the second connecting rod 35, the second cam 311 and the second spring 38 (similar to the cooperation mode of the welding head 32), and after the welding is finished, the tail clamping knife 33 moves away from the working position to release the clamping of the tail of the packing belt, so that the packing belt can be separated from the device.
The head clamp knife 34 is used for clamping the head (i.e. the free end) of the packing belt, so that the reverse conveying of the packing belt is facilitated to carry out tensioning operation, namely, after the head of the packing belt is clamped, the tail (i.e. the wireless end) of the packing belt is pulled to carry out tensioning. The head clamp 34 may be engaged by a third link 37, a third cam 315 and a third spring 310 (in a manner similar to that of the weld head 32) to clamp the strapping head, and after welding is completed, the head clamp 34 is moved away from the work position to release the clamp to the strapping head so that the strapping can be disengaged from the device.
The first link 36 includes a first engagement portion 361 engaged with the first cam 313, a first spring connection portion 363 connected with an end portion of the first spring 39, a spring fixing device hinged to the first spring connection portion 363, the spring fixing device capable of penetrating into the inner side of the first spring 39 and fixing with the end portion of the first spring 39, so that the first spring 39 can apply a pulling force to the first link 36, a first operation portion 362 connected with the middle clamp 31, the first operation portion 362 hinged with the middle clamp 31, so that the middle clamp 31 can linearly act to push the welding head 32 to clamp and weld the packing belt, and a third rotation shaft 364, namely a rotation shaft of the first link 36, disposed on the first link 36 near the end portion where the welding head 32 (the middle clamp 31) is connected, wherein the first spring 39 can apply a force to the first link 36 through the first spring connection portion 363 and the first cam 313 can both improve the clamping effect and the welding head 32 by using the force of the first engagement portion 361, thereby improving the principle of the lever and the welding head 31 and further improving the effect of the welding head 32. The second link 35 and the third link 37 may have the same structure as the first link 36, and the second link 35 and the third link 37 can control the tail clamp 33 and the head clamp 34 better by using the lever principle.
As shown in fig. 10 to 11, the first connecting rod 36, the second connecting rod 35 and the third connecting rod 37 are all in V-shaped structures, the vertex of each V-shaped structure is respectively provided with an engagement portion engaged with the cam, and each engagement portion is respectively engaged with and connected with the corresponding first cam 313, second cam 311 and third cam 315. An installation space can be formed on the inner side of the V-shaped structure, and other parts and structures can be conveniently installed.
As shown in fig. 10, the cam link structure may further include a fourth link 316, and a fourth cam 312 and a fourth spring 318 connected to the same side of the rotation axis of the fourth link 316, where the effect of the fourth cam 312 and the fourth spring 318 on the fourth link 316 (the direction of the rotation of the fourth link 316 around the rotation axis is the same when the force is applied) is the same, and the end of the fourth link 316 is connected with a first baffle 320, so that, to control the first baffle 320, the effect of the fourth cam 312 and the fourth spring 318 on the rotation direction of the fourth link 316 is opposite, that is, the fourth spring 318 can move the first baffle 320 to the working position, so that the tail clamp knife 33, the middle clamp knife 31 (the welding head 32) and the head clamp knife 34 cooperate with the first baffle 320 to clamp and weld the strap, and after the welding is completed, the fourth cam 312 can move the first baffle 320 away from the working position, and release the clamp to the strap from the strapping device.
The connection unit 3 may further include a second barrier 321 for restricting the position of the head (i.e., free end) of the strapping tape, and a boss is provided on the second barrier 321, and when the second barrier 321 is moved to the working position, the boss can form a barrier to the penetrating position of the strapping tape, thereby blocking the head of the strapping tape from continuing to move, and finally forming a connection region where the head and the tail of the strapping tape overlap. The cam link structure may include a fifth link 317, and a fifth cam 314 and a fifth spring 319 connected to the same side of the rotation axis of the fifth link 317, where the action effect of the fifth cam 314 and the fifth spring 319 on the fifth link 317 (in the case of the same direction of force application, the direction of rotation of the fifth link 317 about its rotation axis) is the same as that of the fifth link 317, and the end of the fifth link 317 is connected with a second baffle 321, so that in order to control the second baffle 321, the action of the fifth cam 314 and the fifth spring 319 on the rotation direction of the fifth link 317 is opposite, that is, the fifth spring 319 can move the second baffle 321 to the working position, that is, the second baffle 321 can block the movement of the baling head, and before the final welding, it is also necessary to move the second baffle 321 out of the working position, that is, the fifth cam 314 can move the second baffle 321 away from the working position, so as to avoid the influence on the welding process.
As shown in fig. 13, the fourth link 316 includes a fourth engagement portion 3161 engaged with the fourth cam 312, a fourth spring connection portion 3163 connected with an end portion of the fourth spring 318, the fourth spring connection portion 3163 being hinged with a spring fixing device capable of forming a hook form to be fixed with the end portion of the fourth spring 318 so that the fourth spring 318 can apply a pulling force to the fourth link 316, a fourth operation portion 3162 connected with the first baffle 320, the fourth operation portion 3162 being hinged with the first baffle 320 so as to push the first baffle 320 to perform a lateral movement, and to perform a welding with the tail clamp 33, the middle clamp 31 (welding head 32) and the head clamp 34 in a working position, and a fourth rotation shaft 3164, the fourth rotation shaft 3164 being a rotation shaft of the fourth link 316. The fifth link 317 may have the same structure as the fourth link 316, that is, the fifth link 317 includes a fifth engagement portion, a fifth operation portion, a fifth spring connection portion, and a fifth rotation shaft. The fourth link 316 and the fifth link 317 may each be provided in an L-shaped structure, and the end points of the short sides of each L-shaped structure are respectively provided with engagement portions, engaged with the corresponding fourth cam 312 and fifth cam 314 through the engagement portions, and the vertices of each L-shaped structure are respectively provided with spring connection portions, connected with the corresponding fourth spring 318 and fifth spring 319 through the spring connection portions. By adopting the arrangement mode of the L-shaped structure, on one hand, the installation space of other components and structures can be formed in the L-shaped structure, and on the other hand, the arrangement directions of the fourth connecting rod 316 and the fifth connecting rod 317 relative to other connecting rods can be converted, so that the arrangement of the components and the structures is more convenient, and the joint degree of the whole device structure is further improved.
The connection unit 3 mainly performs five groups of different linear motions under the driving of five corresponding cams (arranged on the same cam shaft) by five connecting rods, and respectively controls the middle clamping knife 31 (the welding head 32), the tail clamping knife 33, the head clamping knife 34, the first baffle 320 and the second baffle 321. The middle clamping knife 31 (welding head 32), the tail clamping knife 33 and the head clamping knife 34 need strong pressing force, and the corresponding first connecting rod 36, second connecting rod 35 and third connecting rod 37 can be respectively provided with a connecting rod large tension spring, namely, the first spring 39, the second spring 38 and the third spring 310 all adopt connecting rod large tension springs. And the rotating shafts of the connecting rods are close to corresponding operation structures, so that a high-strength lever structure is formed, the head part, the middle part and the tail part of the connecting part of the packing belt can be effectively clamped, and the friction welding process is finished. The linear motion of the first and second shutters 320 and 321 does not require a large force, so the corresponding fourth and fifth springs 318 and 319 are small link springs, and the corresponding link shafts may be installed at the centers of the fourth and fifth links 316 and 317.
As shown in fig. 1, the cam link structure is dynamically connected with a position control motor 6, and the position control motor 6 can control rotation of each cam, precisely control the rotation position of the cam, and further control the action state of each component corresponding to the cam link structure. The connecting unit 3 of the invention provides power for the welding head 32 by arranging the welding motor 7, controls the action states of the welding head 32, the head clamping knife 34, the tail clamping knife 33, the middle clamping knife 31 and the like by arranging the position control motor 6 to control the position of the cam connecting rod structure, provides low tension for conveying or tensioning the packing belt by arranging the low tension servo motor 4, provides high tension for tensioning the packing belt by arranging the high tension servo motor 5, and in a word, controls the operation of different structures or components in the packing head by different motors, can simplify the system structure and improve the level of automatic control.
As shown in fig. 6 to 9, the belt outlet end of the guiding freewheel 15 is provided with a belt slot assembly 2, the belt slot assembly 2 may include an L-shaped base 21, L-shaped baffles 22 located at two sides of the L-shaped base 21, and a belt return baffle 26 located at an outer side of the L-shaped base 21, at this time, the L-shaped base 21, the L-shaped baffles 22, and the belt return baffle 26 enclose a passage for conveying the strapping belt, specifically, an inner side (i.e., a side facing at a small angle and held by two arms of the L-shaped base 21) and an outer side (i.e., a side facing at a large angle and held by two arms of the L-shaped base 21) of the L-shaped base 21 respectively form a belt feeding passage and a belt return passage, the strapping belt output by the conveying tensioning unit 1 passes out along the belt feeding passage, returns back into the belt passage after passing through the cargo, and then the strapping belt continues to travel, an overlapping section of the strapping belt is formed at an intersection of an extension line of the belt feeding belt and the belt return passage, and the overlapping section is provided with a connecting unit 3, and the strapping belt compacting and welding by structures such as a head clamp 34, a tail clamp 33, a welding head 32, a middle clamp 31 of the connecting unit 3.
A pipe position strip 29 can be arranged at the inlet of the belt conveying passage, the pipe position strip 29 can be arranged on the L-shaped baffle 22, so that a passing packing belt can be positioned between the pipe position strip 29 and the L-shaped base 21, the pipe position strip 29 is utilized to restrain the conveying path of the packing belt, and the condition that other structures are hooked by tilting the packing belt in the belt conveying passage to influence conveying is avoided. The outlet of the belt conveying channel is provided with a steering bottom belt head 23, the outlet of the belt returning channel is provided with a steering top belt head 24, the steering bottom belt head 23 is of a block structure, two sides of the steering top belt head 24 are respectively provided with a U-shaped groove structure, a channel of the packing belt output belt groove component 2 through the belt conveying channel can be formed between the steering bottom belt head 23 and the steering top belt head 24, and a channel of the packing belt output belt groove component 2 through the belt returning channel can be formed between the steering top belt head 24 and the belt returning baffle 26.
As shown in connection with fig. 8, the feeding end of the first tape packing lane is provided with a feeding short groove 27, the feeding short groove 27 being located in a forward position between the driven wheel structure 14 and the high tension driving pulley 11, the feeding short groove 27 being provided with an arc-shaped sharp mouth facing the first tape packing lane, capable of restricting the respective directions of the packing tape so that it can be transported only in the direction of the first tape packing lane.
Referring to fig. 9, the belt feeding end of the second strapping band channel is provided with a different-engagement turning belt groove 28, the different-engagement turning belt groove 28 is located on the path between the high-tension driving pulley 11 and the low-tension driving pulley 12, and the different-engagement turning belt groove 28 is used for connecting the first strapping band channel and the second strapping band channel, so that the strapping band can smoothly enter the compression position of the second compression wheel assembly after passing through the compression position of the first compression wheel assembly.
The inlet of the return belt can be provided with a recognition belt sensor 25, the recognition belt sensor 25 can be a distance sensor, when the fact that the packing belt penetrates into the return belt is detected, the detection belt can monitor and send out signals to the control device, and the detection belt can also be a position sensor, and when the packing belt touches the contact piece and enables the contact piece to be attached to the position sensor, the position sensor can send out signals to the control device.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided herein to facilitate understanding of the principles and embodiments of the present invention and to provide further advantages and practical applications for those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210123222.7A CN114229082B (en) | 2022-02-10 | 2022-02-10 | A packing head for a packing machine |
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| CN202210123222.7A CN114229082B (en) | 2022-02-10 | 2022-02-10 | A packing head for a packing machine |
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| CN114229082B true CN114229082B (en) | 2025-06-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11174051B2 (en) | 2019-02-15 | 2021-11-16 | Samuel, Son & Co. (Usa) Inc. | Hand held strapping tool |
| US12397943B2 (en) | 2022-11-29 | 2025-08-26 | Samuel, Son & Co. (Usa) Inc. | Handheld strapping device |
| CN116080978B (en) * | 2023-02-24 | 2025-01-07 | 铜陵领芯科技有限公司 | Baling press head and baling method |
| CN116692105B (en) * | 2023-06-09 | 2025-12-02 | 青岛欣欣向荣智能设备有限公司 | Strapping machine head and strapping machine |
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| JP2003267305A (en) * | 2002-03-12 | 2003-09-25 | Strapack Corp | Strapping packing machine |
| CN102501997A (en) * | 2011-10-28 | 2012-06-20 | 杭州永创智能设备股份有限公司 | Wrapping machine |
| CN204433117U (en) * | 2015-02-06 | 2015-07-01 | 张家港市兰马机械有限公司 | A kind of ribbon feeder |
| CN216734903U (en) * | 2022-02-10 | 2022-06-14 | 珠海赛克科技有限公司 | Packing head for packing machine |
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|---|---|---|---|---|
| US5778643A (en) * | 1996-03-14 | 1998-07-14 | Officina Meccanica Sestese S.P.A. | Device to control the feeding of the strap in a strapping machine |
| DE102009004480B3 (en) * | 2009-01-09 | 2010-07-22 | Cyklop Gmbh | Device for determining the tension of a strapping band or the like |
| CN111392093B (en) * | 2020-04-13 | 2021-08-06 | 青岛欣欣向荣智能设备有限公司 | Head for packaging machine and packaging machine |
| CN212638023U (en) * | 2020-04-28 | 2021-03-02 | 珠海博杰电子股份有限公司 | Bundling mechanism |
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|---|---|---|---|---|
| JP2003267305A (en) * | 2002-03-12 | 2003-09-25 | Strapack Corp | Strapping packing machine |
| CN102501997A (en) * | 2011-10-28 | 2012-06-20 | 杭州永创智能设备股份有限公司 | Wrapping machine |
| CN204433117U (en) * | 2015-02-06 | 2015-07-01 | 张家港市兰马机械有限公司 | A kind of ribbon feeder |
| CN216734903U (en) * | 2022-02-10 | 2022-06-14 | 珠海赛克科技有限公司 | Packing head for packing machine |
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