Flexible punching and inserting device for fireworks group pot and inserting method thereof

Abstract

The application discloses a flexible punching and inserting device for a fireworks group pot, a pressing lead tongue block is fixedly connected to the bottom end of a mandrel, the mandrel between a first shaft shoulder and a first positioning ring is sleeved in an inner sleeve pipe; the inner sleeve pipe is provided with a second shaft shoulder and a second positioning ring, a compression spring is sleeved outside the inner sleeve pipe, the inner sleeve pipe and the compression spring are sleeved in an outer base body, the top end of the compression spring acts on the upper portion of the outer base body, and the bottom end of the compression spring acts on the second shaft shoulder; the inner sleeve pipe is provided with a movable positioning assembly for blocking the descending of the inner sleeve pipe, and when a telescopic blocking piece is retracted, the movable positioning assembly is opened so that the inner sleeve pipe can descend. The flexible punching and inserting device can smoothly complete the inserting work, ensures the inserting quality, and ensures that the lead wire quality is not damaged during inserting; the components are tightly matched, the matching time precision is high; the device is compact in structure, small in size and convenient to move back and forth; the working reliability is effectively ensured, and the actual production and processing requirements of the punching and inserting device are better met.

Description

Technical Field

[0001] This invention relates to a punching and insertion device for a fireworks assembly and a method for inserting the device. Background Technology

[0002] The working principle of the insertion device in the fireworks assembly is as described in the Chinese invention patent document CN 105486179 A, ​​entitled "A Firework Tube Punching and Insertion Device": In the punching and insertion device of the fireworks assembly machine, the punching mechanism consisting of a punching cylinder and two punching needles processes two lead wire holes on two adjacent paper tubes. The lead wire conveying mechanism conveys the lead wire between the pressing tongue block and the lower telescopic stop. The cutting blade cuts the lead wire, and the middle part of the cut lead wire segment is clamped between the downward pressing tongue block and the forward-extending stop. Then, the lead wire guide grooves placed on both sides of the pressing tongue block move downward, bending the two ends of the lead wire segment into an inverted U-shape on the stop. The two feet of the inverted U-shaped lead wire segment are embedded in the lead wire guide groove. When the lead wire guide groove moves downward and approaches the paper tube, the stop retracts. Under the pressure of the compression spring, the pressing tongue block pushes the two feet of the inverted U-shaped lead wire segment into the two lead wire holes of the paper tube, completing the insertion work.

[0003] After more than a decade of development, existing ignition coilers are widely used in production. Although they are becoming increasingly sophisticated, the problem of ensuring the quality of the ignition wire is not damaged during insertion remains unresolved. Specifically, the compression spring holds the ignition wire in place by a compression tongue. As the ignition wire guide groove descends, it compresses the spring, and the increasing spring force can easily flatten the ignition wire. This causes the granular gunpowder inside the ignition wire to be pulverized, resulting in changes in the ignition rate and failing to achieve the goal of precisely adjusting the ignition time.

[0004] The industry has been trying to solve this thorny problem, but the difficulty lies in: First, after the lead segment is fed to the stop at a fixed length, the middle of the lead segment must be held in place by the pressure tongue block and the stop to prevent the lead from moving and causing the two legs of the inverted U-shape to be of unequal length, otherwise it will affect the insertion quality.

[0005] Secondly, reducing the spring force will prevent the lead wire from being pushed into the lead wire hole quickly, reliably, and properly, thus failing to complete the insertion process smoothly.

[0006] Furthermore, the pot-making machine places high demands on the reliability of its drilling and insertion devices: given the current processing efficiency, each drilling and insertion action of the device has a short cycle time, requiring high precision in timing; the device must also be compact in structure, small in size for easy reciprocating movement, and have tight fits between components. Any modifications that fail to meet these requirements will not be suitable for actual production. Summary of the Invention

[0007] To address the aforementioned drawbacks, the technical problem this invention aims to solve is to provide a flexible punching and insertion device for fireworks arrays, capable of smoothly completing the insertion process, ensuring insertion quality, reliable operation, and preventing damage to the lead wire during insertion. To solve this technical problem, the present invention employs a flexible punching and insertion device for fireworks arrays. The punching mechanism, consisting of a punching cylinder and two punching needles, processes two lead wire holes on two adjacent paper tubes. It also includes a lead wire conveying mechanism and its cutting blade, a pressing tongue block located between two lead wire guide grooves, and a telescopic stop below the pressing tongue block. The device is characterized by further including an outer base, an inner sleeve, and a mandrel; the outer base and the lead wire guide grooves are connected to a lifting drive assembly for linear vertical movement. The pressing tongue block is fixed to the bottom end of the mandrel. The lower part of the mandrel is provided with a first shoulder, and the upper part of the mandrel is provided with a first positioning ring. The mandrel between the first shoulder and the first positioning ring is fitted in the inner sleeve. The inner sleeve has a second shoulder at the lower part and a second positioning ring at the upper part. A compression spring is fitted outside the inner sleeve, and the inner sleeve and the compression spring are fitted in the outer base. The top end of the compression spring acts on the upper part of the outer base, and the bottom end of the compression spring acts on the second shoulder. The inner sleeve is provided with a movable positioning component that blocks the inner sleeve from moving downwards. When the stop is retracted, the movable positioning component opens, allowing the inner sleeve to move downwards.

[0008] In the above technical solution, in addition to the lifting drive assembly (such as a cylinder), the stop and the movable positioning assembly can each be separately equipped with a drive assembly (such as a cylinder) to drive the stop, the movable positioning assembly, and other insertion components to work together. Preferably, the stop is equipped with a telescopic control assembly, and the lifting drive assembly drives the stop to extend or retract through the telescopic control assembly. When the lifting drive assembly drives the stop to retract, it also opens the movable positioning assembly, allowing the inner sleeve to descend. The advantages are: the stop, the movable positioning assembly, and other insertion components are all driven by a single lifting drive assembly, which acts as both a drive and a control assembly, accurately controlling the release timing of the compression spring, thereby achieving instantaneous linkage and coordination of the actions of each component, resulting in tight fit and high timing accuracy between components; moreover, the device has a compact structure, small size, and is easy to move back and forth; and it has high reliability.

[0009] In the above technical solution, the outer substrate is a tubular body or a plate-like body.

[0010] Furthermore, the telescopic control assembly includes a first pusher head connected to the lifting drive assembly, and a sliding shaft connected to a stop. The stop and / or the sliding shaft are equipped with a return spring. The sliding shaft is correspondingly positioned below the first pusher head. The lifting drive assembly drives the first pusher head downward to abut against and push the sliding shaft to slide. The sliding shaft drives the stop to retract, and the return spring elastically deforms. The lifting drive assembly drives the first pusher head upward to reset and disengage from the sliding shaft, and the sliding shaft and the stop elastically reset. This further ensures operational reliability. Furthermore, the abutment portion between the first pusher head and the sliding shaft is provided with a mating slope. This further improves the mating accuracy.

[0011] Preferably, the movable positioning component is an elastic latch that holds the second positioning ring in place. The second pusher, connected to the lifting drive component, is positioned above the elastic latch. When the lifting drive component moves the second pusher downwards, it causes the elastic latch to open, allowing the inner sleeve to descend. This further ensures operational reliability. Furthermore, a first buffer element, such as an elastic rubber washer, is provided between the second positioning ring and the elastic latch. Furthermore, the working surface of the second pusher is frustoconical, and a roller is provided at the contact portion between the elastic latch and the second pusher. This further improves the fitting accuracy.

[0012] Preferably, a second buffer element, such as a buffer spring or other elastic material, is provided between the first shoulder and the second shoulder. This further reduces the impact of the pressure tongue block on the lead wire and ensures that the lead wire is clamped before the pressure spring releases.

[0013] A method for inserting a flexible perforated insertion device for fireworks arrays includes the following steps: S1: The drilling cylinder drives the drilling needle to drill two lead wire holes on two adjacent firework tubes; when the lifting drive assembly drives the outer base and lead wire guide groove to start descending, the inner sleeve and mandrel descend accordingly until the inner sleeve is blocked by the movable positioning assembly. At this time, the mandrel and its pressing tongue block clamp the middle of the lead wire section based on their own weight and the extended stop, so as to prevent the lead wire from moving and causing the two legs of the inverted U-shape to be of unequal length, thus ensuring the insertion quality; S2: As the outer substrate and lead guide groove continue to descend, the inner sleeve and mandrel no longer descend with it; the lead guide groove bends the two ends of the lead segment into an inverted U-shape on the stop, and the two ends of the inverted U-shaped lead segment are embedded in the two lead guide grooves; At the same time, the outer substrate moves downward and presses down on the top of the compression spring, but the inner sleeve stops, and the bottom of the compression spring is blocked by the second shoulder, so that the compression spring is compressed. Since the inner sleeve stops, the pressure of the compression spring is borne by the second shoulder and is not transmitted to the mandrel and its pressure tongue block, so as not to flatten the lead wire and ensure that the quality of the lead wire is not damaged. S3: As the lifting drive assembly continues to drive the lead wire guide groove downwards and approaches the paper tube, the telescopic control assembly drives the stop to retract, opening the movable positioning assembly so that the inner sleeve can descend. At this time, the compressed spring is released, and the spring force drives the mandrel and its pressing tongue block downwards through the second shoulder and the first shoulder in sequence, quickly, reliably, and accurately pushing the two legs of the inverted U-shaped lead wire segment into the two lead wire holes of the paper tube, successfully completing the insertion work.

[0014] As can be seen from the above, the beneficial effects of the present invention are as follows: the flexible punching and insertion device can smoothly complete the insertion work, ensure the insertion quality, and ensure that the quality of the lead wire is not damaged during insertion; at the same time, the mechanism does not change the cycle of each punching and insertion action, and does not affect the processing efficiency; it effectively ensures the reliability of the work and better meets the actual production and processing requirements of the punching and insertion device.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time.

[0016] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. When an element is referred to as being "attached to" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intervening element. Attached Figure Description

[0017] Example 1 Attached Figure: Figure 1 A schematic diagram of the drilling and insertion device (first-person view, including guide rods); Figure 2 This is a structural schematic diagram of the punching and insertion device (second view, excluding the guide rod; lead segment 16 presents both a straight section and an inverted U-shape). Figure 3 This is a structural schematic diagram of the punching and insertion device (third-person perspective, excluding the guide rod). The first group showing the internal structure Figure 4-7 : Figure 4 This is a schematic diagram of the outer matrix structure; Figure 5 This is a schematic diagram of the inner sleeve structure; Figure 6 This is a schematic diagram of the mandrel structure; Figure 7 A schematic diagram of the drilling and insertion head structure after removing the outer base, inner sleeve, and mandrel; The second group showing the internal structure Figure 8-9 : Figure 8 A schematic diagram (sectional view) of the combined structure of the inner sleeve and mandrel. Figure 9 A schematic diagram of the drilling and insertion head structure after removing the inner sleeve and mandrel (the outer base of the head is cut open). The third group showing the internal structure Figure 10-11 : Figure 10 A schematic diagram (sectional view) of the combined structure of the outer substrate, inner sleeve, and mandrel. Figure 11 This is a schematic diagram of the drilling and insertion head structure after the inner and outer bases and mandrel have been removed (the axial sliding hole on the head is cut open).

[0018] Attached diagram labels: 1. Wall panel; 2. Slider; 3. Guide rod; 4. Lead wire guide groove; 5. Pressing tongue block; 6. Stop; 7. Outer base; 8. Inner sleeve; 9. Mandrel; 10. Insertion cylinder; 11. Crossbeam; 12. Drilling cylinder; 13. Drilling pin; 14. Lead wire conveying mechanism; 15. Cutting knife; 16. Lead wire segment. 17 Compression spring, 18 Axial sliding hole, 19 Bearing, 20 Lever fulcrum, 601 First push head, 602 Sliding sleeve, 603 Sliding shaft, 604 Connecting rod, 605 Return spring, 606 Guide hole, 701 Positioning inner ring, 702 Inner step, 801 Second shaft shoulder, 802 Second positioning ring, 803 Bolt seat, 804 Bolt body, 805 Guide post, 806 Clamp spring, 807 Elastic rubber washer, 808 Second push head, 809 Working surface, 810 Roller, 811 Bolt port, 901 First shaft shoulder, 902 First positioning ring.

[0019] Example 2 Attached Figure: Figure 12 A schematic diagram of the combined structure of the outer substrate, inner sleeve, and mandrel (front view). Figure 13 This is a schematic diagram of the combined structure of the outer substrate, inner sleeve, and mandrel (rear view).

[0020] Example 3 Attached Figure: Figure 14 A schematic diagram of the punching and insertion device (first-person perspective); Figure 15A schematic diagram of the punching and insertion device (second perspective); Figure 16 This is a schematic diagram of the punching and insertion device (third-person perspective). Detailed Implementation

[0021] Example 1: See Appendix Figure 1-11 This illustrates a specific structure of the present invention. It is a flexible punching and insertion device for fireworks arrays. In this example, the wall plate 1 of the punching and insertion device is mounted on a guide rod 3 via a slider 2. The punching and insertion device moves back and forth along the guide rod 3 to punch and insert holes in the fireworks tubes below (not shown in the figure) one by one. A punching cylinder 12 is mounted on the wall plate 1, driving a punching needle 13 to punch two lead wire holes in two adjacent fireworks tubes before resetting. A lifting drive assembly—an insertion cylinder 10—is also mounted on the wall plate 1.

[0022] The flexible insertion mechanism includes a pressing tongue block 5 located between two lead wire guide grooves 4, a stop 6 below the pressing tongue block 5, and a lead wire conveying mechanism 14 on one side of the wall panel to convey the lead wire to the forward-extending stop 6.

[0023] The flexible insertion mechanism includes an outer base 7, an inner sleeve 8, and a mandrel 9. The lower end of the piston rod of the insertion cylinder 10, part of the lifting drive assembly, is connected to a crossbeam 11. The outer base 7 and the lead wire guide groove 4 are connected to the insertion cylinder 10 via the crossbeam 11 for vertical linear movement. When the crossbeam 11 descends, it also drives the cutting blade 15 to swing along the lever fulcrum 20 via the bearing 19 to cut the lead wire. The cut lead wire segment 16 rests on the stop 6 in the middle. After the crossbeam 11 rises and resets, the cutting blade 15 swings in the opposite direction to elastically reset.

[0024] In the example, the pressing tongue block 5 is fixed to the bottom end of the mandrel 9. The lower part of the mandrel 9 is provided with a first shoulder 901, and the upper part of the mandrel 9 is provided with a first positioning ring 902. The mandrel 9 between the first shoulder 901 and the first positioning ring 902 is fitted in the inner sleeve 8.

[0025] In the example, the inner sleeve 8 has a second shoulder 801 at the lower part and a second positioning ring 802 at the upper part. The compression spring 17 is fitted outside the inner sleeve 8, and the inner sleeve 8 and the compression spring 17 are fitted inside the outer base 7. The top end of the compression spring 17 acts on the positioning inner ring 701 at the upper part of the outer base 7, and the bottom end of the compression spring 17 acts on the second shoulder 801. The second positioning ring 802 on the inner sleeve 8 is located above the positioning inner ring 701.

[0026] In the example, the bottom end of the outer substrate 7 is provided with an inner step 702 to strengthen the bottom structure, and the first shoulder 901 is located above the inner step 702. The outer substrate 7 is installed in the axial sliding hole 18 on the wall plate 1 to achieve vertical linear movement.

[0027] In the example, the stop 6 is equipped with a telescopic control assembly, and the insertion cylinder 10 is driven to extend and retract via the telescopic control assembly. In the example, the telescopic control assembly includes a first push head 601, which is connected to the lower end of the piston rod of the insertion cylinder 10, and the piston rod passes through the guide hole 606 on the crossbeam 11.

[0028] The telescopic control assembly also includes a sliding shaft 603 installed within a sliding sleeve 602 of the wall panel 1. The sliding shaft 603 is connected to a stop 6 via a connecting rod 604 to achieve synchronous movement between the two. Both the stop 6 and the sliding shaft 603 are equipped with return springs 605. The sliding shaft 603 is correspondingly positioned below the first push head 601. When the insertion cylinder 10 drives the first push head 601 downwards to abut against and push the sliding shaft 603 into the sliding sleeve 602, the sliding shaft 603 causes the stop 6 to retract, and the return spring 605 elastically deforms and compresses to store energy. The insertion cylinder 10 then drives the first push head 601 upwards to reset and disengage from the sliding shaft 603, causing the sliding shaft 603 and the stop 6 to elastically reset. In this example, the contact portion between the first push head 601 and the sliding shaft 603 is provided with a mating slope to improve the mating accuracy.

[0029] The inner sleeve 8 is provided with a movable positioning component to prevent the inner sleeve 8 from descending. In this example, the movable positioning component is an elastic bolt that locks the second positioning ring 802. The elastic bolt includes a bolt seat 803, and two bolt bodies 804 are respectively fitted onto guide posts 805 on both sides of the bolt seat 803. A bolt spring 806 on the guide post 805 elastically compresses the two bolt bodies 804, causing them to move towards the center along the guide post 805. When the two bolt bodies 804 move towards each other, the two bolt openings 811 close and lock below the second positioning ring 802. In this example, an elastic rubber washer 807 is provided between the second positioning ring 802 and the elastic bolt.

[0030] A second pusher 808 is correspondingly provided above the elastic latch. The second pusher 808 is connected to the upper end of the piston rod of the insertion cylinder 10, and the piston rod passes between the two latch bodies 804. In the example, the working surface 809 of the second pusher 808 is frustoconical, and rollers 810 are provided at the contact portions between the two latch bodies 804 and the working surface 809 of the second pusher. This further improves the fitting accuracy.

[0031] When the insertion cylinder 10 drives the second pusher 808 downward, the frustum-shaped working surface 809 acts on the two rollers 810, inserts between the two bolts 804, drives the two bolt ports 811 to separate, and the elastic bolt opens the second positioning ring 802 to pass through, so that the inner sleeve 8 can move downward.

[0032] The insertion method for the flexible perforated insertion device used in fireworks arrays includes the following steps: S1 punching cylinder 12 drives punching needle 13 to punch two lead wire holes on two adjacent firework tubes and then resets. When insertion cylinder 10 drives outer base 7 and lead wire guide groove 4 to start descending through crossbeam 11, inner sleeve 8 and mandrel 9 descend accordingly until inner sleeve 8 is blocked by movable positioning component. At this time, mandrel 9 and its pressing tongue block 5 clamp the middle of lead wire segment 16 based on their own weight and the extended stop 6, to prevent lead wire segment 16 from moving and causing the two legs of the inverted U shape to be of unequal length, thus ensuring insertion quality; As the outer substrate 7 and lead wire guide groove 4 continue to descend, the inner sleeve 8 and mandrel 9 no longer descend; the lead wire guide groove 4 bends the two ends of the lead wire segment 16 into an inverted U-shape on the stop 6, and the two feet of the inverted U-shaped lead wire segment 16 are embedded in the two lead wire guide grooves 4. At the same time, the outer base 7 moves downward and presses down on the top of the compression spring 17, but the inner sleeve 8 is in a stopped state. The bottom end of the compression spring 17 is blocked by the second shoulder 801, so that the compression spring 17 is compressed. Since the inner sleeve 8 is stopped, the pressure of the compression spring 17 is borne by the second shoulder 801 and is not transmitted to the spindle 9 and its pressure tongue block 5, so as not to flatten the lead wire and ensure that the quality of the lead wire is not damaged. As the S3 insertion cylinder 10 continues to drive the lead wire guide groove 4 downwards and approaches the lower paper tube, the telescopic control component drives the stop 6 to retract, and at the same time opens the movable positioning component so that the inner sleeve 8 can descend. At this time, the compressed spring 17 is released, and the elastic force of the spring 17 drives the mandrel 9 and its pressing tongue block 5 downwards through the second shoulder 801 and the first shoulder 901 in sequence. This quickly, reliably, and accurately pushes the two feet of the inverted U-shaped lead wire segment 16 into the two lead wire holes of the paper tube, successfully completing the insertion work.

[0033] In other embodiments, a second buffer, such as a buffer spring or other elastic material, may be provided between the first shoulder 901 and the second shoulder 801 to further reduce the impact of the pressure tongue block 5 on the lead segment 16 and ensure reliable clamping of the lead segment 16 before the pressure spring 17 is released.

[0034] After the insertion work is completed, the insertion cylinder 10 drives all components to reset and continues the next drilling and insertion action.

[0035] By adopting the above technical solution, no additional driving components are added, nor are the number of strokes and the stroke of the insertion cylinder 10 changed, and the cycle of each drilling and insertion action remains unchanged. Therefore, the processing efficiency of the drilling and insertion device is not affected. The same insertion cylinder 10 serves as both a driving component and a control component. Combined with multiple overlapping mandrel compression springs, inner sleeves, and outer bases, the compression / release timing of the compression spring 17 is accurately and reliably controlled, thereby achieving immediate and tight linkage between the actions of each component, high timing accuracy, and effectively ensuring operational reliability. Furthermore, the device has a compact structure and small size, facilitating reciprocating movement. Therefore, this invention effectively meets the actual production and processing requirements of the drilling and insertion device.

[0036] Example 2: See Appendix Figure 12-13 This reflects another specific structure of the present invention. The difference from Embodiment 1 is that: In Example 1, the outer substrate 7 is a tubular body. The outer substrate 7 is installed in the axial sliding hole 18 on the wall panel 1 to achieve vertical linear movement. The upper part of the outer substrate 7 is provided with a positioning inner ring 701.

[0037] In this example, the outer substrate 7-2 is a plate-shaped body, and it is mounted on a guide rail 21 on a wall panel (not shown in the figure) to achieve vertical linear movement. A positioning end plate 22 is provided on the upper part of the outer substrate 7-2. The purpose of the invention can be achieved in the same way.

[0038] Apart from the differences mentioned above, the other mechanisms and their working principles in this example are the same as in Example 1, and are briefly described below: The structure of the mandrel 23, its inner sleeve 24, and the compression spring 25 is the same as that in Embodiment 1. The lower part of the mandrel 23 is provided with a first shoulder 26, and the upper part of the mandrel 23 is provided with a first positioning ring 27; the lower part of the inner sleeve 24 is provided with a second shoulder 28, and the upper part of the inner sleeve 24 is provided with a second positioning ring 29.

[0039] The spindle 23 between the first shoulder 26 and the first positioning ring 27 is fitted inside the inner sleeve 24, and the compression spring 25 is fitted outside the inner sleeve 24.

[0040] The top end of the compression spring 25 acts on the positioning end plate 22 on the upper part of the outer base 7-2, and the bottom end of the compression spring 25 acts on the second shoulder 28 of the inner sleeve 24. The second positioning ring 29 on the inner sleeve 24 is located above the positioning end plate 22, and the first positioning ring 27 is located above the second positioning ring 29.

[0041] The pressing tongue block 30 is fixed to the bottom end of the spindle 23, and the outer base 7-2 and the lead wire guide groove 31 are connected to the lifting drive assembly (not shown in the figure) for vertical linear movement. The inner sleeve 24 is provided with a movable positioning component (not shown in the figure, such as the elastic latch described in Embodiment 1) to block the inner sleeve 24 from moving downward. The movable positioning component moves to position the inner sleeve 24 between the positioning end plate 22 and the second positioning ring 29. When the lifting drive component drives the stop (not shown in the figure) to retract, it also opens the movable positioning component, so that the inner sleeve 24 can move downward.

[0042] The other mechanisms and their working principles are the same as in Example 1, and will not be described again.

[0043] Example 3: See Appendix Figure 14-16 This reflects another specific structure of the present invention. The difference from Embodiment 1 is that: In Example 1, the punching cylinder 12 drives the punching needle to move; the insertion cylinder 10 achieves the following three driving functions: 1. The outer substrate 7 and the lead wire guide groove 4 are connected to the insertion cylinder 10 via the crossbeam 11 for vertical linear movement; 2. The insertion cylinder 10 drives the stop to extend and retract via the telescopic control assembly; 3. When the insertion cylinder 10 drives the stop to retract, it also opens the movable positioning component through the second pusher 808, so that the inner sleeve can descend.

[0044] In this example, the insertion cylinder 42 no longer drives the stop and the movable positioning component. In addition to the drilling cylinder 40 and the insertion cylinder 42, there is also a stop cylinder 43 that directly drives the stop to extend and retract, so there is no need to set up an extension and retraction control component. There is also a latch cylinder 41 that directly opens / closes and drives the movable positioning component - such as the elastic latch, so there is no need to set up a second pusher 808.

[0045] The other mechanisms and their working principles are the same as in Example 1, and will not be described again.

[0046] The embodiments of the present invention disclosed above are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in conjunction with the accompanying drawings to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. However, the invention can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the invention. Therefore, the invention is limited only by the claims and their full scope and equivalents, and not by the specific embodiments disclosed.

Claims

1. A flexible punching and inserting device for fireworks arrays, comprising a punching mechanism consisting of a punching cylinder and two punching needles that processes two lead wire holes on two adjacent paper tubes, further comprising a lead wire conveying mechanism and its cutting blade, a pressing tongue block located between two lead wire guide grooves, and a telescopic stop provided below the pressing tongue block, characterized in that, It also includes an outer substrate, an inner sleeve, and a mandrel; the outer substrate and the lead wire guide groove are connected to the lifting drive assembly for vertical linear movement; The pressing tongue block is fixed to the bottom end of the mandrel. The lower part of the mandrel is provided with a first shoulder, and the upper part of the mandrel is provided with a first positioning ring. The mandrel between the first shoulder and the first positioning ring is fitted in the inner sleeve. The inner sleeve has a second shoulder at the lower part and a second positioning ring at the upper part. A compression spring is fitted outside the inner sleeve, and the inner sleeve and the compression spring are fitted in the outer base. The top end of the compression spring acts on the upper part of the outer base, and the bottom end of the compression spring acts on the second shoulder. The inner sleeve is provided with a movable positioning component that blocks the inner sleeve from moving downwards. When the stop is retracted, the movable positioning component opens, allowing the inner sleeve to move downwards.

2. The flexible perforation and insertion device for fireworks arrays as described in claim 1, characterized in that, The stop is equipped with a telescopic control component. The lifting drive component drives the stop to extend and retract through the telescopic control component. When the lifting drive component drives the stop to retract, it also opens the movable positioning component, allowing the inner sleeve to descend.

3. The flexible perforation and insertion device for fireworks arrays as described in claim 2, characterized in that, The telescopic control component includes a first pusher connected to the lifting drive component, and a sliding shaft connected to a stop. The stop and / or the sliding shaft are provided with a return spring. The sliding shaft is correspondingly located below the first pusher. The lifting drive component drives the first pusher downward to abut against and push the sliding shaft to slide. The sliding shaft drives the stop to retract, and the return spring elastically deforms. The lifting drive component drives the first pusher upward to reset and disengage from the sliding shaft, and the sliding shaft and the stop elastically reset.

4. The flexible perforation and insertion device for fireworks arrays as described in claim 3, characterized in that, The first pusher and the sliding shaft have a corresponding mating slope.

5. A flexible perforation and insertion device for fireworks arrays as described in any one of claims 1-4, characterized in that, The active positioning component is an elastic latch that holds the second positioning ring in place. The second pusher connected to the lifting drive component is positioned above the elastic latch. When the lifting drive component drives the second pusher downward, it causes the elastic latch to open, allowing the inner sleeve to descend.

6. The flexible perforation and insertion device for fireworks arrays as described in claim 5, characterized in that, The working surface of the second pusher is frustoconical, and a roller is provided at the contact part between the elastic bolt and the second pusher.

7. A flexible perforation and insertion device for fireworks arrays as described in any one of claims 1-4 and 6, characterized in that, A first buffer is provided between the second positioning ring and the elastic retainer.

8. A flexible perforation and insertion device for fireworks arrays as described in any one of claims 1-4 and 6, characterized in that, A second buffer is provided between the first shoulder and the second shoulder.

9. A flexible perforation and insertion device for fireworks arrays as described in any one of claims 1-4 and 6, characterized in that, The outer matrix is ​​a tubular or plate-like structure.

10. A method for inserting a flexible perforated insertion device for fireworks arrays, comprising the following steps: S1: The drilling cylinder drives the drilling needle to drill two lead wire holes on two adjacent firework tubes; when the lifting drive assembly drives the outer base and lead wire guide groove to start to descend, the inner sleeve and mandrel descend along with it until the inner sleeve is blocked by the movable positioning assembly. At this time, the mandrel and its pressing tongue block clamp the middle of the lead wire section based on its own weight and the extended stop. S2: As the outer substrate and lead guide groove continue to descend, the inner sleeve and mandrel no longer descend with it; the lead guide groove bends the two ends of the lead segment into an inverted U-shape on the stop, and the two ends of the inverted U-shaped lead segment are embedded in the two lead guide grooves; At the same time, the outer base moves downward and presses down on the top of the compression spring, but the inner sleeve stops, and the bottom of the compression spring is blocked by the second shoulder, causing the compression spring to be compressed. S3: When the lifting drive assembly continues to drive the lead wire guide groove downwards and approaches the paper tube, the telescopic control assembly drives the stop to retract, opening the movable positioning assembly so that the inner sleeve can descend. At this time, the compressed spring is released, and the spring force drives the mandrel and its pressing tongue block downwards through the second shoulder and the first shoulder in sequence, pushing the two legs of the inverted U-shaped lead wire segment into the two lead wire holes of the paper tube respectively, completing the insertion work.

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