High stability packing machine

Abstract

This utility model relates to the field of strapping machines and discloses a high-stability strapping machine, comprising a frame, a strap isolation device, and a heat-sealing mechanism. A slot is provided on the top of the frame, and the strap isolation device is connected to the slot above the frame. The heat-sealing mechanism is installed inside the frame and positioned below the strap isolation device. The strap isolation device includes a feed seat, a guide slide, a sliding block, a lever, and a strap-out sensor switch. The feed seat and guide slide are mounted on the frame. The feed seat has a first feed groove, and the guide slide is located on the side of the first feed groove. The guide slide has a groove, and the sliding block is slidably connected to the groove. The lever is rotatably connected to the sliding block, and a spring is installed inside the sliding block. The front end of the lever extends into the first feed groove, and the side of the rear end of the lever abuts against the spring. The strap-out sensor switch is fixedly connected to the guide slide and is located on the side of the rear end of the lever. This utility model can further improve the overall stability and production efficiency of the machine.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically a high-stability packaging machine. Background Technology

[0002] As a key piece of equipment in modern industrial production, the operational stability of automatic strapping machines directly determines the efficiency and yield of packaging lines. The stability bottleneck of existing automatic strapping machines often occurs in the initial stage of the core process flow, namely the strap conveying and arrival detection stages. Currently, most automatic strapping machines on the market rely on the following two traditional technical solutions to control the arrival of the straps: The first approach involves setting a fixed feeding time. The control system starts the feeding motor and begins timing. Once the preset time is reached, it assumes the cable tie has been delivered to the designated position, stops feeding, and proceeds to the tensioning and heat-sealing process. However, this approach has significant drawbacks: in actual production, the cable tie may fail to reach the correct position within the set time due to increased friction with the guide groove, bending deformation, or slippage in the transmission mechanism. This forces the machine to perform subsequent operations before the cable tie has fully formed an effective loop, resulting in empty or loosely secured waste, severely impacting packaging quality and production efficiency. Furthermore, in the event of a tape jam, the motor will continue running until the timer expires, potentially leading to motor overload, cable tie breakage, or even damage to transmission components.

[0003] The second approach involves monitoring the load current of the feed motor in real time to determine whether the feeding is complete. The principle is that when the cable tie reaches the end of the feed line and is stopped by a mechanical limit switch, the motor load increases sharply, and the current increases accordingly. When the control system detects that the current exceeds a preset threshold, it determines that the cable tie is in place and stops feeding. While this approach is an improvement over pure timing control, its reliability remains insufficient. First, the detection accuracy is easily affected by factors such as fluctuations in mains voltage, changes in ambient temperature, and changes in friction caused by wear and tear on the mechanical structure, which may lead to misjudgments. Second, to accommodate the required tightness of different bundled items, the threshold setting for the stall current often requires a compromise value, which is complex and lacks adaptability. Setting the threshold too high may result in incomplete feeding; setting it too low may trigger a false stop under normal feeding resistance, resulting in insufficient feeding length.

[0004] In summary, existing traditional strapping machines all suffer from inherent defects such as low stability and low adaptability in the cable tie inspection process. These defects directly lead to problems such as decreased product qualification rate, increased equipment failure rate, and limited production efficiency.

[0005] In view of this, the applicant conducted in-depth research on the above-mentioned issues, which led to this case. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, this utility model provides a high-stability packaging machine, which can further improve the overall stability and production efficiency of the machine.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A high-stability strapping machine includes a frame, a strap isolation device, and a heat-sealing mechanism. The frame has a slot on top, and the strap isolation device is connected to the slot. The heat-sealing mechanism is installed inside the frame and positioned below the strap isolation device. The strap isolation device includes a feed seat, a guide slide, a sliding block, a lever, and a strap-out sensor switch. The feed seat and guide slide are mounted on the frame. The feed seat has a first feed groove, and the guide slide is located on the side of the first feed groove. The guide slide has a groove, and the sliding block is slidably connected to the groove. The lever is rotatably connected to the sliding block, and a spring is located inside the sliding block. The front end of the lever extends into the first feed groove, and the side of the rear end of the lever abuts against the spring. The strap-out sensor switch is fixedly connected to the guide slide and is located on the side of the rear end of the lever.

[0008] Furthermore, the sliding block has a receiving groove on its side, a mounting hole that runs vertically through the receiving groove, a rotating shaft in the mounting hole, and a paddle sleeved on the rotating shaft.

[0009] Furthermore, the side wall of the receiving groove is provided with a mounting groove, and the spring is disposed in the mounting groove.

[0010] Furthermore, the sliding block includes a lower slider and an upper slider, which are fastened together by screws. The lower slider has a transition groove at its rear end and a second feed groove with a partition inside.

[0011] Furthermore, the front end of the paddle is provided with a top band, the side wall of the top band is provided with an inclined top surface, and the front end of the inclined top surface is provided with a rounded corner.

[0012] Furthermore, the hot-melt mechanism includes a fixed frame, a hot-melt block, a first pressing block, a second pressing block, a first cylinder, and a drive assembly. The fixed frame is fixedly connected to the lower surface of the guide slide. The hot-melt block, the first pressing block, and the second pressing block are all slidably connected to the fixed frame. The hot-melt block is located between the first pressing block and the second pressing block. The second pressing block is provided with a third feed groove and a cutter. The first cylinder is located at the bottom of the frame. The power output end of the first cylinder is connected to the lower end of the hot-melt block. The drive assembly is located inside the frame and drives the first pressing block and the second pressing block to move up and down.

[0013] Furthermore, the drive assembly includes a first drive arm and a second cylinder. The front end of the first drive arm is hinged to the fixed frame, the middle part of the first drive arm is provided with a first strip hole, the lower end of the first clamping block is provided with a first drive shaft, the first drive shaft is slidably connected to the first strip hole, the lower end of the second cylinder is hinged to the frame, and the power output end of the second cylinder is hinged to the rear end of the first drive arm.

[0014] Furthermore, the drive assembly also includes a second drive arm and a third cylinder. The front end of the second drive arm is hinged to the fixed frame, the middle part of the second drive arm is provided with a second strip hole, the lower end of the second clamping block is provided with a second drive shaft, the second drive shaft is slidably connected to the second strip hole, the lower end of the third cylinder is hinged to the frame, and the power output end of the third cylinder is hinged to the rear end of the second drive arm.

[0015] This invention provides a highly stable packing machine. It has the following advantages: 1. This invention achieves direct confirmation of the "cable tie has accurately reached the preset position" state by physically triggering a sensor switch through the pusher of the cable tie head. This replaces the traditional indirect guessing mode, forming a reliable closed-loop control. The system will only execute the subsequent tightening and heat sealing processes after receiving this confirmation signal, thereby completely avoiding empty and loose binding caused by incomplete cable tie feeding and greatly improving the product qualification rate.

[0016] 2. Due to the highly reliable tape feeding process in this invention, the number of downtimes and processing time caused by tape feeding failures are significantly reduced. The baling machine can maintain continuous, stable, and efficient operation for extended periods, resulting in a significant improvement in overall equipment efficiency. Simultaneously, the reliance on operators is reduced, and the level of automation is substantially enhanced.

[0017] 3. The signal emitted by the induction switch in this invention can be used as a diagnostic signal. If the system does not receive the induction signal, it can be determined that there is a fault such as missing or blocked tape, and the machine will immediately stop and alarm. This rapid fault self-diagnosis and response mechanism prevents the fault from escalating, protects core components, extends the service life of the equipment, and demonstrates excellent stability and safety. Attached Figure Description

[0018] Figure 1 This is a perspective view of the external structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the cable tie isolation device; Figure 4 This is a cross-sectional structural diagram of the cable tie isolation mechanism; Figure 5This is a schematic diagram of the installation structure of the paddle. Figure 6 This is a schematic cross-sectional view of the internal structure of this utility model; Figure 7 This is a schematic diagram of the external structure of the hot-melt mechanism; Figure 8 This is a schematic diagram of another external structure of the hot melt mechanism; Figure 9 This is a three-dimensional cross-sectional view of the hot-melt mechanism; Figure 10 This is a cross-sectional view of the mounting structure of the first drive arm; Figure 11 This is a cross-sectional view of the mounting structure of the second drive arm.

[0019] The components include: frame 1, slot 11, feed seat 2, first feed groove 21, guide slide 3, slide 31, sliding block 4, receiving groove 41, mounting hole 42, rotating shaft 43, mounting groove 44, lower slide block 45, adapter groove 451, second feed groove 452, partition 453, upper slide block 46, paddle 5, top belt part 51, inclined top surface 52, belt induction switch 61, spring 62, fixing frame 71, hot melt block 72, first pressing block 73, second pressing block 74, third feed groove 741, cutter 742, first cylinder body 75, first drive arm 81, second cylinder body 82, first strip hole 83, first drive shaft 84, second drive arm 85, third cylinder body 86, second strip hole 87, and second drive shaft 88. Detailed Implementation

[0020] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Please see the appendix Figure 1 -Appendix Figure 11This utility model provides a high-stability packaging machine, comprising a frame 1, a cable tie isolation device, and a heat-melting mechanism. The cable tie isolation device isolates the upper and lower cable ties, and the heat-melting mechanism heat-melts and cuts the cable ties. Furthermore, the frame 1 of this utility model also includes a cable tie conveying mechanism, which is a conventional existing technology structure. The cable tie conveying mechanism can feed the cable ties into the cable tie isolation device; its structure will not be described in detail here. A slot 11 is provided above the frame 1. The cable tie isolation device is connected above the slot 11 of the frame 1. The hot-melt mechanism is installed inside the frame 1 and is located below the cable tie isolation device. The cable tie isolation device includes a feed seat 2, a guide slide 3, a sliding block 4, a lever 5, and a cable tie induction switch 61. The feed seat 2 and the guide slide 3 are installed on the frame 1. The feed seat 2 is provided with a first feed groove 21. The guide slide 3 is located on the side of the first feed groove 21. The guide slide 3 is provided with a sliding groove 31. The sliding block 4 is slidably connected to the sliding groove 31. The lever 5 is rotatably connected to the sliding block 4. A spring 62 is provided inside the sliding block 4. The front end of the lever 5 extends into the first feed groove 21. The side of the rear end of the lever 5 abuts against the spring 62. The cable tie induction switch 61 is fixedly connected to the guide slide 3 and is located on the side of the rear end of the lever 5.

[0022] In this embodiment, the sliding block 4 has a receiving groove 41 on its side, and the extending direction of the receiving groove 41 is parallel to the extending direction of the sliding groove 31. The receiving groove 41 has a through mounting hole 42, and a rotating shaft 43 is provided in the mounting hole 42. The paddle 5 is sleeved on the rotating shaft 43. When the cable tie abuts against the front end of the paddle 5, the paddle 5 can rotate around the axis of the rotating shaft 43. The side wall of the receiving groove 41 has a mounting groove 44, and a spring 62 is provided in the mounting groove 44. One end of the spring 62 can be fixedly connected in the mounting groove 44. The elastic force of the spring 62 is less than the abutting force of the cable tie, so that when the cable tie is heat-melted and cut, the spring 62 can abut against the rear end of the paddle 5 to reset the paddle 5.

[0023] In this embodiment, to facilitate the installation of the sliding block 4, the sliding block 4 includes a lower slider 45 and an upper slider 46, which are fastened together by screws. Furthermore, the rear end of the lower slider 45 is provided with an adapter groove 451. Specifically, the adapter groove 451 can be connected to the piston rod of a cylinder, so that the cylinder pulls the lower slider 45, thereby causing the sliding block 4 to slide within the groove 31.

[0024] In this embodiment, the upper surface of the lower slider 45 is provided with a second feeding groove 452, and a partition 453 is provided inside the second feeding groove 452. The partition 453 separates the first feeding groove 21 from the second feeding groove 452, thereby separating the cable tie into upper and lower sections. Specifically, the partition 453 and the lower slider 45 are fastened together by screws. Furthermore, the feeding end of the second feeding groove 452 is chamfered to facilitate the entry of the front end of the cable tie into the second feeding groove 452 during feeding.

[0025] In this embodiment, the front end of the lever 5 is provided with a top band portion 51, and the side wall of the top band portion 51 is provided with an inclined abutment surface 52. When the cable tie fully abuts against the top band portion 51, the inclined abutment surface 52 can remain perpendicular to the cable tie, ensuring the positioning of the cable tie. The front end of the inclined abutment surface 52 is provided with a rounded corner, which facilitates the cable tie abutting against and driving the lever 5 to swing.

[0026] In this embodiment, the heat-melting mechanism includes a fixed frame 71, a heat-melting block 72, a first clamping block 73, a second clamping block 74, a first cylinder 75, and a drive assembly. The fixed frame 71 is locked to the lower surface of the guide slide 3. The heat-melting block 72, the first clamping block 73, and the second clamping block 74 are all slidably connected to the fixed frame 71. The heat-melting block 72 is located between the first clamping block 73 and the second clamping block 74. The second clamping block 74 is provided with a third feed groove 741 and a cutter 742. The third feed groove 741 allows the cable tie to enter the first feed groove 21. The first cylinder 75 is located at the bottom of the frame 1. The power output end of the first cylinder 75 is connected to the lower end of the heat-melting block 72. The first cylinder 75 can drive the heat-melting block 72 to move up and down. When the heat-melting block 72 moves upward, it heat-melts the cable tie. The drive assembly is located inside the frame 1. The drive assembly drives the first clamping block 73 and the second clamping block 74 to move up and down.

[0027] Specifically, the drive assembly includes a first drive arm 81 and a second cylinder 82. The front end of the first drive arm 81 is hinged to the fixed frame 71, and a first strip-shaped hole 83 is provided in the middle of the first drive arm 81. A first drive shaft 84 is provided at the lower end of the first clamping block 73, and the first drive shaft 84 is slidably connected to the first strip-shaped hole 83. The lower end of the second cylinder 82 is hinged to the frame 1, and the power output end of the second cylinder 82 is hinged to the rear end of the first drive arm 81. During operation, the second cylinder 82 drives the rear end of the first drive arm 81 to move upward, causing the first drive arm 81 to swing upward. During the swinging process of the first drive arm 81, the first strip-shaped hole 83 drives the first drive shaft 84 to move upward, thereby driving the first clamping block 73 to rise and clamp the cable tie. The drive assembly also includes a second drive arm 85 and a third cylinder 86. The front end of the second drive arm 85 is hinged to the fixed frame 71, and a second strip-shaped hole 87 is provided in the middle of the second drive arm 85. A second drive shaft 88 is provided at the lower end of the second clamping block 74, and the second drive shaft 88 is slidably connected to the second strip-shaped hole 87. The lower end of the third cylinder 86 is hinged to the frame 1, and the power output end of the third cylinder 86 is hinged to the rear end of the second drive arm 85. During operation, the third cylinder 86 drives the rear end of the second drive arm 85 to move upward, causing the second drive arm 85 to swing upward. During the swinging process of the second drive arm 85, the second strip-shaped hole 87 drives the second drive shaft 88 to move upward, thereby driving the second clamping block 74 to rise and clamp the cable tie, and the cutter 742 cuts the cable tie.

[0028] The working principle of this utility model is as follows: During packaging, the cylinder drives the sliding block 4 to move forward to below the first feeding groove 21, which is separated from the second feeding groove 452. The cable tie is fed into the second feeding groove 452 through the conveying mechanism, and then enters the third feeding groove 741 and the first feeding groove 21, exiting from the feeding seat 2. Then, the front end of the cable tie is manually inserted into the first feeding groove 21 from the rear end of the feeding seat 2. As the cable tie moves forward, it abuts against the top part 51 of the lever 5 until it stops moving. At this time, the top part 51 of the lever 5 rotates and swings around the rotating shaft 43 due to the abutment, causing the rear end of the lever 5 to swing to below the belt sensing switch 61, where it is sensed. Afterward, the cylinder drives the sliding block 4 to reset, and the lever 5, after separating from the front end of the cable tie, resets under the elastic force of the spring 62, thus completing one recording process. Then the cylinder drives the sliding block 4 to move backward, and the first cylinder 75 and the drive assembly drive the hot melt block 72, the first pressing block 73 and the second pressing block 74 to move upward, so as to heat melt and cut the cable tie and complete the cable tie packaging.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-stability packing machine characterized by, The machine includes a frame, a cable tie isolation device, and a heat fusion mechanism. A slot is provided on the top of the frame, and the cable tie isolation device is connected to the slot on the frame. The heat fusion mechanism is installed inside the frame and positioned below the cable tie isolation device. The cable tie isolation device includes a feed seat, a guide slide, a sliding block, a lever, and a cable tie induction switch. The feed seat and guide slide are mounted on the frame. The feed seat has a first feed groove, and the guide slide is located on the side of the first feed groove. The guide slide has a sliding groove, and the sliding block is slidably connected to the sliding groove. The lever is rotatably connected to the sliding block, and a spring is installed inside the sliding block. The front end of the lever extends into the first feed groove, and the side of the rear end of the lever abuts against the spring. The cable tie induction switch is fixedly connected to the guide slide and is located on the side of the rear end of the lever.

2. A high-stability packing machine according to claim 1, characterized in that, The sliding block has a receiving groove on its side, and a through mounting hole is provided in the receiving groove. A rotating shaft is provided in the mounting hole, and the paddle is sleeved on the rotating shaft.

3. A high-stability packing machine according to claim 2, characterized in that, The side wall of the receiving groove is provided with a mounting groove, and the spring is located in the mounting groove.

4. A high-stability packing machine according to claim 3, characterized in that, The sliding block includes a lower slider and an upper slider, which are fastened together by screws. The lower slider has a transition groove at its rear end and a second feed groove with a partition inside.

5. A high-stability packing machine according to claim 4, characterized in that, The front end of the paddle is provided with a top band, the side wall of the top band is provided with an inclined top surface, and the front end of the inclined top surface is provided with a rounded corner.

6. A high-stability packing machine according to claim 1, characterized in that, The hot-melting mechanism includes a fixed frame, a hot-melting block, a first pressing block, a second pressing block, a first cylinder, and a drive assembly. The fixed frame is fixedly connected to the lower surface of the guide slide. The hot-melting block, the first pressing block, and the second pressing block are all slidably connected to the fixed frame. The hot-melting block is located between the first pressing block and the second pressing block. The second pressing block is provided with a third feed groove and a cutter. The first cylinder is located at the bottom of the frame. The power output end of the first cylinder is connected to the lower end of the hot-melting block. The drive assembly is located inside the frame and drives the first pressing block and the second pressing block to move up and down.

7. A high-stability packing machine according to claim 2, characterized in that, The drive assembly includes a first drive arm and a second cylinder. The front end of the first drive arm is hinged to the fixed frame. The middle part of the first drive arm is provided with a first strip hole. The lower end of the first clamping block is provided with a first drive shaft. The first drive shaft is slidably connected to the first strip hole. The lower end of the second cylinder is hinged to the frame. The power output end of the second cylinder is hinged to the rear end of the first drive arm.

8. A high-stability packing machine according to claim 7, characterized in that The drive assembly also includes a second drive arm and a third cylinder. The front end of the second drive arm is hinged to the fixed frame, and a second strip hole is provided in the middle of the second drive arm. A second drive shaft is provided at the lower end of the second clamping block. The second drive shaft is slidably connected to the second strip hole. The lower end of the third cylinder is hinged to the frame, and the power output end of the third cylinder is hinged to the rear end of the second drive arm.

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