Binding machine

Abstract

The strapping machine comprises a tape reel, a tape threading device, a tape storage frame, a tape feeding and withdrawing mechanism and an arch tape channel, the tape threading device comprises a tape feeding section, a tape feeding section, a tape storage section and a transition section which are sequentially connected, the tape feeding section is located at the inlet end of the upper portion of the tape storage frame, the tape storage section is configured to be of a structure capable of being opened and closed in the width direction of a packaging tape, and when the tape storage section is closed, the tape feeding section is closed. A channel for the packaging tape to enter the tape feeding and withdrawing mechanism from the tape feeding section is formed; when the tape storage section is opened, the tape storage section is communicated with the tape storage frame, and the packaging tape naturally falls into the tape storage frame to be stored; and the transition section is configured to be of a nested structure, is connected with the belt feeding and withdrawing mechanism and acts along with the action of the belt feeding and withdrawing mechanism. According to the strapping machine, an upper tape feeding structure is adopted, the structure of an inlet of the tape storage frame is simplified, the problems that manual tape threading is difficult and time is wasted are effectively solved, the packaging tape can be smoothly conveyed to the tape conveying and withdrawing mechanism and the arch tape channel, and meanwhile the tape storage requirement is met by controlling the tape storage section.

Description

Technical Field

[0001] This invention relates to the field of strapping machine technology, specifically to a strapping machine that is particularly suitable for strapping and packaging cigarette boxes. Background Technology

[0002] A strapping machine is a device used to wrap straps around products or packages and tighten the ends to connect them, so as to achieve the purpose of fixing and packaging.

[0003] CN202624672U discloses a fully automatic plastic packaging strapping machine. The packaging tape on the tape reel enters the storage frame from the bottom and enters the archway tape path from the tensioning arm along the corresponding tape feeding track. The items to be strapped are located in the archway tape path. After the packaging tape is strapped to the items to be strapped, the tensioning arm tightens the packaging tape, and then it is cut and heated to bond, thereby realizing the strapping operation.

[0004] Considering the increased friction between the strapping and the guide wall, issues such as tape jamming and other problems with the smoothness of tape feeding, as well as design considerations such as the tape storage function, the strapping machines in the aforementioned patents all adopt a bottom-feeding method. Bottom-feeding allows the packaging tape to naturally accumulate in the tape storage frame using gravity, avoiding tape storage disorder and jamming caused by the tape being fed too high.

[0005] However, after replacing the reel, this type of strapping machine requires the packaging tape head to be inserted into the storage frame from the bottom. Since the storage frame entrance has a corresponding guide wheel structure, manual tape insertion is difficult and time-consuming in actual use.

[0006] CN2359218Y discloses a strapping device for a fully automatic strapping machine, enabling standing strapping. However, this device relies on the rotation and switching of a bridge-type conveyor trough (connecting to the feeding and receiving unit during strapping, and extending downwards into the storage trough during strapping storage). During the storage process, the storage path is restricted by the position of the trough, which easily leads to stacking resistance and causes the stored strapping to become disordered. In addition, the rotation of the bridge-type conveyor trough may cause additional friction at the joint of the packaging strap, resulting in poor conveying smoothness and easily causing a decline in the performance of the packaging strap, as well as a high risk of equipment failure.

[0007] Therefore, a strapping machine is needed that can ensure normal storage function and smooth conveying of packaging straps, while effectively solving the problems of difficulty and time-consuming manual strapping. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides a strapping machine that changes the original lower strapping structure to an upper strapping structure, simplifying the structure at the entrance of the strapping storage frame. This effectively solves the problems of difficulty and time-consuming manual strapping, and also allows the packaging straps to be smoothly delivered to the strapping feeding and unloading mechanism and the archway conveyor. At the same time, by controlling the strapping storage section, the needs for strapping storage are also taken into account.

[0009] A strapping machine includes: a frame, a tape reel, a tape threading device, a tape storage frame, a tape feeding and unloading mechanism, and an arched conveyor belt. Packaging tape on the tape reel sequentially passes through the tape threading device, the tape storage frame, and the tape feeding and unloading mechanism into the arched conveyor belt. The tape threading device is located above the tape storage frame, and the tape storage frame is located below the tape threading device. The tape threading device includes:

[0010] The tape inlet section is located at the upper inlet end of the tape storage frame;

[0011] The conveyor belt section connects to the downstream section of the feed belt section;

[0012] The storage section is connected downstream of the feeding section and is configured to open and close along the width of the packaging belt. When the storage section is closed, it forms a channel for the packaging belt to enter the feeding and unloading mechanism from the feeding section. When the storage section is open, it is connected to the storage frame, and the packaging belt falls naturally into the storage frame for storage.

[0013] The transition section is located downstream of the storage section and connected to the conveyor belt feeding and unloading mechanism. The transition section is configured in a nested structure.

[0014] Furthermore, the storage tape section includes:

[0015] A fixing plate is fixed to the back plate of the storage frame;

[0016] A movable plate is arranged opposite to a fixed plate and configured to move along the width of the packaging belt. When the movable plate moves away from the fixed plate, the storage section is opened and the storage section is connected to the storage frame.

[0017] Furthermore, the storage section also includes: a mounting plate, on which a moving plate driving component is provided, the moving plate driving component being fixedly connected to the moving plate and used to drive the moving plate to move along the width direction of the packaging belt.

[0018] Furthermore, the belt feeding section, belt delivery section, and belt storage section are inclined downwards, and are inclined from the upper entrance end of the frame to the entrance end of the transition section.

[0019] Furthermore, the feed section is equipped with a first detection sensor for detecting the packaging tape entering the feed section;

[0020] A second detection sensor is provided at the entrance of the transition section, and the second detection sensor is used to detect the packaging tape entering the transition section;

[0021] When the first detection sensor detects that the packaging tape has entered the feeding section and the second detection sensor detects that the packaging tape has entered the transition section, the tape storage section is opened to store the tape.

[0022] Furthermore, the transition section is generally arc-shaped, and includes:

[0023] The first transition channel is fixedly located at the outlet end of the storage section;

[0024] The second transition channel has an inner diameter larger than the first transition channel, forming a nested structure; the second transition channel is connected to the belt feeding and unfeeding mechanism and moves with the belt feeding and unfeeding mechanism.

[0025] Furthermore, the belt feeding and unloading mechanism includes a tensioning swing arm and an end face cam, and the second transition channel is connected to the tensioning swing arm and moves with the swing of the tensioning swing arm.

[0026] Furthermore, the threading device further includes:

[0027] The feed guide roller is located on the upper outer side of the belt storage frame and is used to guide the packaging belt on the belt reel into the feed section;

[0028] The feed roller is located between the feed section and the feed section.

[0029] Furthermore, a pressing wheel is provided below the feeding wheel. The pressing wheel is installed on the back plate of the belt storage frame through a pressing mechanism. A channel for conveying the packaging belt is formed between the feeding wheel and the pressing wheel. The pressing wheel is used to make the packaging belt contact the feeding wheel.

[0030] Furthermore, a limiting block is provided at the entrance of the transition section. The limiting block is connected to the strapping machine frame via an installation shaft. The limiting block is rotatably connected to the installation shaft. In its natural state, the limiting block falls naturally, and its end extends into the transition section to limit the packaging tape at the entrance of the transition section.

[0031] Working principle:

[0032] After passing through the feed guide rollers, the packaging belt enters from the feed section, and then passes through the feeding section, storage section and transition section in sequence. When it reaches the feeding and unloading mechanism, the storage section is opened. During the continued conveying of the packaging belt, the packaging belt exiting the storage section loses its support and falls naturally into the storage frame, where the packaging belt continues to be conveyed, thus realizing the storage function within the storage frame.

[0033] After the storage of the packaging tape is completed, the packaging tape enters the arch conveyor belt. The tension arm swings upward to tighten the packaging tape, which in turn drives the transition section to move. After it is fully tightened, the subsequent cutting, heating and bonding processes are carried out.

[0034] The beneficial effects of this invention are:

[0035] 1. This invention changes the existing lower belt feeding structure to upper belt feeding, which simplifies the structure, facilitates manual belt threading, ensures smooth conveying of packaging belts, and eliminates problems such as belt storage disorder and belt jamming.

[0036] 2. The upper feed path is more aligned with the reel's output direction, reducing the probability of the packaging tape getting tangled or jammed.

[0037] 3. With the top feeding method, the packaging tape can naturally hang into the spacious storage cabinet, which can reduce the mutual squeezing and stacking of the packaging tape during storage and avoid tape jamming caused by excessive feeding resistance due to crowded storage.

[0038] 4. The transition section connects the storage section to the feeding and unloading mechanism, ensuring smooth conveying and accurate feeding of the packaging tape without affecting the operation of the feeding and unloading mechanism.

[0039] 5. The tape feeding device has a smoother path than the lower tape feeding structure, and the path is aligned with the tape exit direction, which can effectively reduce the probability of tape jamming.

[0040] 6. The use of an inclined continuous path and a trumpet-shaped entrance significantly reduces the bending angle and frictional resistance of the packaging tape, thereby reducing the probability of tape tangling and jamming. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the strapping machine in Example 1;

[0042] Figure 2 This is a schematic diagram of the internal structure of the strapping machine in Example 1;

[0043] Figure 3 This is a schematic diagram of the belt feeding section and belt delivery section in Example 1;

[0044] Figure 4 This is a schematic diagram of the storage tape section and transition section in Example 1;

[0045] Figure 5 This is a schematic diagram of the action of the packaging belt being fed into the conveyor belt in Example 1;

[0046] Figure 6 This is a schematic diagram of the packaging belt feeding process in Example 1;

[0047] Figure 7 This is a schematic diagram of the packaging and storage process in Example 1.

[0048] Figure label:

[0049] 1-Frame; 2-Archway conveyor; 3-Storage frame; 4-Threading device; 41-Bracket; 411-Infeed guide roller; 42-Infeed section; 421-Upper guide plate; 422-Lower guide plate; 423-First photoelectric switch; 43-Feeding roller; 431-Mounting bracket; 432-Tension spring; 433-Pressure roller; 44-Feeding section; 45-Storage section; 451-Fixed plate; 452-Moving plate; 453-Mounting plate; 454-Cylinder; 46-Transition section; 461-First transition channel; 462-Second transition channel; 463-Second photoelectric switch; 464-Limit block; 465-Mounting shaft; 5-Feeding / retracting mechanism; 51-Tightening swing arm; 52-End face cam; 6-Belt reel; 7-Packaging belt. Detailed Implementation

[0050] The present invention will be further described in detail below through specific embodiments.

[0051] Example 1

[0052] like Figure 1-2 As shown, this embodiment discloses a strapping machine, including: a frame 1, an archway 2, a strapping storage frame 3, a strapping threading device 4, a strapping feed and return mechanism 5, a strapping reel 6, a clamping and cutting mechanism, and an ironing and sealing mechanism. The object to be strapped is placed in the archway 2. The packaging strap 7 on the strapping reel 6 enters the archway 2 from the upper part of the frame 1 on one side of the strapping storage frame 3 after sequentially passing through the strapping threading device 4 and the strapping feed and return mechanism 5, and then surrounds the object to be strapped along the archway 2. Subsequently, the end face cam 52 of the strapping feed and return mechanism 5 rotates, and drives the tensioning swing arm 51 to swing upward through the wave-shaped surface at its upper end, thereby tightening the packaging strap 7. Then, the clamping and cutting mechanism and the ironing and sealing mechanism cut the strap and heat and bond it, thereby realizing the strapping operation.

[0053] Specifically, such as Figure 3 , 5As shown, the belt feeding device 4 includes: a belt feed guide roller 411, a belt feed section 42, a belt delivery roller 43, a belt delivery section 44, a belt storage section 45, and a transition section 46. The belt feed section 42, the belt delivery section 44, and the belt storage section 45 are all slightly inclined along the belt delivery direction to form a conveying pattern of conveying the packaging belt 7 from top to bottom. The belt feed guide roller 411 is installed on the upper outer side of the belt storage frame 3 via a bracket 41. The frame 1 in the guiding direction of the belt feed guide roller 411 is provided with an inlet for the packaging belt 7, which is connected to the inlet of the belt feed section 42 so that the packaging belt 7 can smoothly enter the belt feed section 42. The feeding section 42 includes an upper guide plate 421, a lower guide plate 422, and a first photoelectric switch 423 (used to realize the function of the first detection sensor in the invention). The upper guide plate 421 and the lower guide plate 422 are arranged vertically opposite each other, and the area between them is the conveying channel for the packaging tape 7. Both are made of materials such as stainless steel with a smooth surface. The entrance ends of the upper guide plate 421 and the lower guide plate 422 form a bend, so that the entrance of the feeding section 42 presents a funnel-shaped guiding structure, so that the packaging tape 7 can smoothly enter the feeding section 42 at high speed. The first photoelectric switch 423 is used to detect the entry of the packaging tape 7 into the feeding section 42.

[0054] The feeding section 44 and the feeding section 42 have similar structures, both consisting of two guide plates forming a conveying channel. A feeding wheel 43 is set between them. The feeding wheel 43 is preferably a drive wheel with a drive, mainly used for the transition conveying of the packaging belt 7. A pressure wheel 433 is set below it. The feeding wheel 43 and the pressure wheel 433 form a channel for conveying the packaging belt 7. The pressure wheel 433 makes the packaging belt 7 contact the feeding wheel 43. The packaging feeding wheel 43 and the packaging belt 7 have sufficient friction, thus enabling the conveying function. The clamping roller 44 is mounted on the back plate of the storage frame 3 via a clamping mechanism. The clamping mechanism includes a mounting frame 431 and a tension spring 432. The mounting frame 431 has an L-shaped structure and is rotatably connected to the back plate of the storage frame 3 via a rotating shaft. The tension spring 432 is connected to its upper part to form a swing arm structure. The clamping roller 433 is located at the turning point of the mounting frame 431. The tension of the tension spring 432 makes the clamping roller 433 always have an upward tendency, thereby achieving the clamping of the packaging belt 7.

[0055] The storage section 45 includes a fixed plate 451, a movable plate 452, a mounting plate 453, and a cylinder 454. The fixed plate 451 and the mounting plate 453 are fixedly mounted on the back plate on the upper part of the storage frame 3. The mounting plate 453 extends away from the back plate. The cylinder 454 is mounted on the extension. The movable plate 452 is located inside the extension and is opposite to the fixed plate 451. The output end of the cylinder 454 is fixedly connected to the movable plate 452. The cylinder 454 drives the movable plate 452 away from or towards the fixed plate 451. The fixed plate 451 and the mounting plate 453 are L-shaped bends. In the initial state, the movable plate 452 and the fixed plate 451 are close together, and their lower parts form a support plane to support the conveying of the packaging belt 7, so that when the belt starts to feed, the end of the packaging belt 7 can be smoothly conveyed into the transition section 46 and subsequent mechanisms. When the cylinder 454 moves the moving plate 452 away from the fixed plate 451, the two separate, causing the storage frame 3 to open. The packaging belt 7 conveyed from the feeding section 44 loses the support of the moving plate 452 and the fixed plate 451, and falls naturally into the storage frame 3 under the action of gravity for storage.

[0056] The transition section 46 is connected downstream of the storage section 45, and its outlet is connected to the conveyor belt feeding and unloading mechanism 5. After passing through the transition section 46, the packaging belt 7 enters the conveyor belt feeding and unloading mechanism 5, and then passes through the conveyor belt feeding and unloading mechanism 5 into the arched conveyor belt 2. The transition section 46 has an overall arc-shaped structure, and its swing arc trajectory is the same as that of the tensioning swing arm 51. The transition section 46 includes a first transition channel 461 and a second transition channel 462. The second transition channel 462 is connected to the tensioning swing arm 51 and moves with the movement of the tensioning swing arm 51. The inner diameter of the second transition channel 462 is larger than that of the first transition channel 461, and the two form a nested structure. On the one hand, this allows the second transition channel 462 to follow the movement of the first transition channel 462, and on the other hand, the flared opening facilitates the entry of the packaging belt 7 from the first transition channel 461 into the second transition channel 462.

[0057] A second photoelectric switch 463 (used to realize the function of the second detection sensor in the invention) is installed at the entrance of the first transition channel 461 to detect the packaging tape 7 entering the first transition channel 461. When the packaging tape 7 is first inserted or replaced, the head of the packaging tape 7 is passed through the feed guide roller 411 and then inserted into the feed section 42 from the entrance at the top of the frame 1. Then the equipment is turned on to start automatic tape feeding. When the first photoelectric switch 423 detects the entry of the packaging tape 7, and at the same time the second photoelectric switch 463 detects the entry of the packaging tape 7 into the first transition channel 461, it means that the head of the packaging tape 7 has completely entered the first transition channel 461. At this time, the storage section 45 is opened (it can also be delayed to ensure that the head of the packaging tape 7 does not come out). The cylinder 454 drives the moving plate 452 to open the lower channel, and the packaging tape 7 naturally enters the storage frame 3 for storage.

[0058] Furthermore, a limiting block 464 is provided at the entrance of the first transition channel 461. The limiting block 464 is connected to the frame 1 via a mounting shaft 465. The limiting block 464 is rotatably connected to the mounting shaft 465. In its natural state, the limiting block 464 falls naturally, and its lower end extends into the first transition channel 461. At the same time, under the limiting effect of its fan-shaped structure, its lower end only extends partially, and there is still space between it and the bottom of the first transition channel 461 for the packaging belt 7 to pass through. The limiting block 464 is mainly used to limit the packaging belt 7 from entering the first transition channel 461 from the storage frame 3, and to prevent the packaging belt 7 from being unrestrained during the upward conveying process, which would cause the packaging belt 7 to jam after entering the first transition channel 461.

[0059] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A strapping machine, comprising: The machine consists of a frame (1), a reel (6), a tape threading device (4), a tape storage frame (3), a tape feeding and unloading mechanism (5), and an archway tape conveyor (2). The packaging tape (7) on the reel (6) passes sequentially through the tape threading device (4), the tape storage frame (3), and the tape feeding and unloading mechanism (5) into the archway tape conveyor (2). Its characteristic is that... The threading device (4) is located on the upper part of the storage frame (3), and the storage frame (3) is located below the threading device (4). The threading device (4) includes: The belt inlet section (42) is located at the upper inlet end of the frame (1); The conveyor belt section (44) is connected downstream of the feed belt section (42); The storage section (45) is connected to the downstream of the feeding section (44) and is configured to open and close along the width direction of the packaging belt (7). When the storage section (45) is closed, it forms a channel for the packaging belt (7) to enter the feeding and unloading mechanism (5) from the feeding section (44). When the storage section (45) is open, the storage section (45) is connected to the storage frame (3), and the packaging belt (7) falls naturally into the storage frame (3) for storage. The transition section (46) is connected to the downstream of the storage section (45) and to the conveyor belt feeding and unloading mechanism (5). The transition section (46) is configured in a nested structure.

2. The strapping machine as described in claim 1, characterized in that, The storage segment (45) includes: A fixing plate (451) is fixed to the back plate of the storage frame (3); The movable plate (452) is arranged opposite to the fixed plate (451) and configured to move along the width direction of the packaging strip (7). When the movable plate (452) moves away from the fixed plate (451), the storage strip section (45) is opened and the storage strip section (45) is connected to the storage strip frame (3).

3. The strapping machine as described in claim 2, characterized in that, The storage section (45) further includes: a mounting plate (453), on which a moving plate drive is provided, the moving plate drive is fixedly connected to the moving plate (452), and is used to drive the moving plate (452) to move along the width direction of the packaging belt (7).

4. The strapping machine as described in claim 1, characterized in that, The belt feeding section (42), belt delivery section (44) and belt storage section (45) are inclined downwards and from the upper entrance end of the frame (1) to the entrance end of the transition section (46).

5. The strapping machine as described in claim 1, characterized in that, The feed section (42) is equipped with a first detection sensor for detecting that the packaging tape (7) enters the feed section (42). A second detection sensor is provided at the entrance of the transition section (46), which is used to detect the packaging tape (7) entering the transition section (46).

6. The strapping machine as described in claim 1, characterized in that, The transition section (46) is generally arc-shaped and includes: The first transition channel (461) is fixedly arranged at the outlet end of the storage section (45); The second transition channel (462) has an inner diameter larger than the first transition channel (461), and the two form a nested structure; the second transition channel (462) is connected to the feed and unfeed mechanism (5) and moves with the feed and unfeed mechanism (5).

7. The strapping machine as described in claim 6, characterized in that, The belt feeding and unloading mechanism (5) includes a tensioning swing arm (51) and an end face cam (52). The second transition channel (462) is connected to the tensioning swing arm (51) and moves with the swing of the tensioning swing arm (51).

8. The strapping machine as described in claim 1, characterized in that, The threading device (4) further includes: The feed guide roller (411) is located on the upper outer side of the frame (1) and is used to guide the packaging belt (7) on the belt reel (6) into the feed section (42). The feed roller (43) is located between the feed section (42) and the feed section (42).

9. The strapping machine as described in claim 8, characterized in that, A pressing wheel (433) is provided below the feed roller (43). The pressing wheel (433) is installed on the back plate of the storage frame (3) through a pressing mechanism. A channel for conveying the packaging belt (7) is formed between the feed roller (43) and the pressing wheel (433). The pressing wheel (433) is used to make the packaging belt (7) contact the feed roller (43).

10. The strapping machine as described in claim 1, characterized in that, A limiting block (464) is provided at the entrance of the transition section (46). The limiting block (464) is connected to the frame (1) of the strapping machine through the mounting shaft (465). The limiting block (464) is rotatably connected to the mounting shaft (465). In its natural state, the limiting block (464) falls naturally, and its end extends into the transition section (46) to limit the packaging tape (7) at the entrance of the transition section (46).

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