A blocking piece of a flexible punching and inserting device for fireworks group pots

Abstract

The utility model discloses a kind of blocking piece of flexible punching plug guide device of firework group pot, blocking piece is set on integrated guide mechanism, integrated guide mechanism is composed of bottom plate and cover plate, and there is the gap of left and right direction of lead wire through between the cooperation surface of bottom plate and cover plate, the blocking piece retractable motion of connection driving mechanism, bottom plate or panel is equipped with the blocking piece through hole for the blocking piece, the working surface of blocking piece clamping lead wire is slope face.Press lead wire block descends and clamps lead wire, lead wire on blocking piece can displace along slope face, until lead wire and the inside surface of bottom plate or panel abut each other.It can effectively reduce the collision impact of lead wire body when pressing lead wire block and blocking piece clamping lead wire from two aspects of reducing collision pressure and buffering collision, and can avoid the situation that lead wire of clamping part is pressed flat.

Description

Technical Field

[0001] This utility model relates to a stop for a hole-drilling and insertion device for fireworks arrays. Background Technology

[0002] The working principle of the punching and insertion device in the fireworks assembly is as described in the Chinese invention patent document CN 105486179 A, ​​entitled "A Punching and Insertion Device for Firework Tubes": 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 17 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 held 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, when the ignition tongue and stop clamp the ignition wire, the hard collision between them pulverizes the granular gunpowder inside the wire, causing changes in the ignition rate and preventing precise adjustment of the ignition time. This manifests visually as the ignition wire at the clamping part being flattened.

[0004] We have been trying to solve this thorny problem, as illustrated by patent documents such as: "A flexible pressing tongue block for drilling and inserting holes in fireworks arrays" (publication date: August 1, 2023) with authorization announcement number CN219454849U, which buffers the collision by setting a flexible body at the collision end of the pressing tongue block; and "A flexible drilling and inserting device and its insertion method for fireworks arrays" (publication date: February 2, 2024) with application publication number CN 117490502A, which reduces the collision kinetic energy by reducing the pressure of the compression spring acting on the pressing tongue block.

[0005] However, the above solutions all mitigate collisions on the side of the pressing tongue block, without addressing the other side of the collision—the stop. In existing technology, the stop is located on the integrated guide mechanism, specifically as follows: Figure 1 , 2As shown, the integrated guiding mechanism consists of a base plate 101 and a cover plate 102. A left-right gap 104 is formed between the mating surfaces of the base plate and the cover plate, through which the lead wire 103 passes. The base plate has a stopper passage hole for the stopper 105 to pass through. When the telescopic stopper 105 extends, it engages vertically with the pressing tongue block 106 to clamp the lead wire 103 within the gap 104. The stopper 105 is cylindrical, so that when the lead wire guide grooves 107 on both sides move downwards, the ends of the lead wire segment are bent into an inverted U-shape along the central cylinder. Effectively reducing collisions on one side of the stopper further helps prevent changes in the lead wire's burning rate.

[0006] Other structures and working principles of the integrated guiding mechanism can be found in the patent document: "An Integrated Guiding Mechanism for a Firework Tube Punching and Insertion Device" with authorization announcement number CN217716153 U, announcement date 2022.11.01. This utility model fully cites the patent documents mentioned in the background art. Utility Model Content

[0007] To address the aforementioned drawbacks, the technical problem this utility model aims to solve is to provide a stopper for a flexible perforation and insertion device for fireworks arrays, effectively reducing the impact on the lead wire body when the pressure tongue block and the stopper clamp the lead wire. To solve this technical problem, the present utility model adopts a stopper for a flexible perforation and insertion device for fireworks arrays. The stopper is mounted on an integrated guide mechanism, which consists of a base plate and a cover plate. A lateral gap exists between the mating surfaces of the base plate and the cover plate for the lead wire to pass through. The stopper is connected to a drive mechanism for telescopic movement. A stopper passage hole is provided on the base plate or cover plate for the stopper to pass through. The key feature is that the working surface of the stopper clamping the lead wire is a sloped surface.

[0008] The beneficial effect of this utility model is that when the pressure tongue block descends to clamp the lead wire, the lead wire on the stop can be displaced along the ramp surface until the lead wire abuts against the inner side of the base plate or panel. At this time, the force-bearing surface of the lead wire includes not only the contact surface with the ramp surface but also the contact surface with the inner side surface; at the same time, compared with the cylindrical stop, the ramp surface can also increase the contact surface between the lead wire and the working surface, and also increase the force-bearing surface of the lead wire; the increased force-bearing surface of the lead wire can effectively reduce the impact pressure on the lead wire. Moreover, in the above process, the displacement of the lead wire along the ramp surface can buffer the pressure on the lead wire body. Therefore, setting the working surface of the stop to clamp the lead wire as a ramp surface can effectively reduce the impact impact on the lead wire body when the pressure tongue block and the stop clamp the lead wire from both reducing the impact pressure and buffering the impact, and can prevent the lead wire in the clamping part from being flattened.

[0009] In one embodiment, the ramp surface is a chamfered portion located at the end of the stop.

[0010] In one embodiment, the ramp surface is a conical surface located at the end of the stop.

[0011] In one embodiment, the base plate is provided with a stop through hole for the stop to pass through, and the telescopically moving stop moves toward the panel through the stop through hole; when the pressing tongue block descends to clamp the lead wire, the ramp surface abuts against the lead wire with the inner side of the panel. Furthermore, the panel is provided with anti-collision holes corresponding to the end of the stop.

[0012] In one embodiment, the panel is provided with a stop through hole for the stop to pass through, and the telescopically moving stop moves toward the base plate through the stop through hole; when the pressing tongue block descends to clamp the lead wire, the ramp surface abuts against the lead wire with the inner side of the base plate.

[0013] 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 present 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.

[0014] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description

[0018] Figure 1 A schematic diagram (front view) of a structure in the prior art where the stop is set on an integrated guide mechanism.

[0019] Figure 2 This is a schematic diagram of the structure of the existing technology in which the stop is set on the integrated guide mechanism (right view, cover plate removed).

[0020] Figure 3 This is a schematic diagram of the structure of the stopper in Embodiment 1 mounted on the integrated guide mechanism (and...). Figure 1 (Same perspective, including magnified structural diagrams).

[0021] Figure 4 This is a schematic diagram of the stop structure in Example 1.

[0022] Figure 5 This is a schematic diagram (perspective view, with the cover plate separated) of the structure of the stop on the integrated guide mechanism in Embodiment 1.

[0023] Figure 6 This is a partial structural diagram of the punching and insertion device of Example 1 (lead wire inserted state).

[0024] Figure 7 This is a partial structural diagram of the punching and insertion device in Example 1 (the lead wire is bent into an inverted U-shape).

[0025] Figure 8 This is a schematic diagram of the overall structure of the punching and insertion device in Example 1.

[0026] Figure 9 This is a schematic diagram (perspective view, with the cover plate separated) of the structure of the stop on the integrated guide mechanism in Embodiment 2.

[0027] Figure 10 This is a schematic diagram of the structure in Example 3 where the stop is mounted on the integrated guide mechanism. Figure 1 (Front view)

[0028] Figure 11 This is a schematic diagram of the structure in Example 3 where the stop is mounted on the integrated guide mechanism. Figure 2 (3D view, with the cover plate separated).

[0029] Figure 12 This is a schematic diagram of the stop structure in Example 4.

[0030] Figure 13 This is a schematic diagram of the structure in Example 4 where the stop is mounted on the integrated guide mechanism. Figure 1 (Front view)

[0031] Figure 14 This is a schematic diagram of the structure in Example 4 where the stop is mounted on the integrated guide mechanism. Figure 2 (3D view, with the cover plate separated).

[0032] Figure 15 This is a schematic diagram (perspective view, with the cover plate separated) of the structure of the stop on the integrated guide mechanism in Embodiment 5. Detailed Implementation

[0033] Example 1: See Appendix Figure 3-8 This illustrates a specific structure of the present invention. The stop 1 of the flexible perforated insertion device for the fireworks assembly is mounted on an integrated guide mechanism. The integrated guide mechanism consists of a base plate 2 and a cover plate 3. A gap in the left-right direction, through which the lead wire 5 passes, exists between the mating surfaces of the base plate 2 and the cover plate 3. The tail end 1-2 of the stop 1 is connected to a drive mechanism for telescopic movement. The working surface of the stop 1 that holds the lead wire 5 is a slope surface 1-1. In this example, the slope surface 1-1 is a chamfered portion located at the end of the stop 1.

[0034] In the example, the base plate 2 has a stop through hole for the stop 1 to pass through. The telescopically moving stop 1 passes through the stop through hole and moves towards the panel 3, extending between the mating surfaces of the base plate 2 and the cover plate 3. The feeding mechanism 8 feeds the lead wire 5 onto the stop 1, and the cutting mechanism 7 cuts off the feeding end of the lead wire 5 in a timely manner. When the pressing tongue block 4 descends to clamp the lead wire 5, the lead wire 5 can be displaced along the ramp surface 1-1 until the ramp surface 1-1 abuts against the inner side of the panel 3 (i.e., the side facing the base plate). Figure 3As shown, at this time, the force-bearing surface of the lead wire 5 includes not only the contact surface with the ramp surface 1-1, but also the contact surface with the inner side of the panel 3; at the same time, relative to the cylindrical stop, the ramp surface 1-1 can also increase the contact surface between the lead wire 5 and the working surface, and also increase the force-bearing surface of the lead wire 5. The increased force-bearing surface of the lead wire 5 can effectively reduce the impact pressure on the lead wire 5 body. Moreover, in the above process, the displacement of the lead wire 5 along the ramp surface 1-1 can buffer the pressure on the lead wire 5 body. Therefore, by setting the working surface of the stop 1 that clamps the lead wire as the ramp surface 1-1, when the pressing tongue block 4 and the stop 1 clamp the lead wire 5, the impact on the lead wire 5 body can be effectively reduced from the aspects of reducing impact pressure and buffering impact. It can prevent the lead wire 5 in the clamping part from being flattened.

[0035] Furthermore, existing improved technical solutions for this problem, as described in the background art, involve using a flexible body at the collision end of the pressure tongue block to buffer the impact. However, this solution suffers from drawbacks: the flexible body is small, difficult to install, and prone to detachment. Reducing the spring pressure acting on the pressure tongue block to decrease the impact kinetic energy results in a complex mechanism, making equipment manufacturing and maintenance somewhat difficult. This invention only changes the working surface structure of the stop 1, making it easy to install, manufacture, and maintain without requiring other modifications. It effectively avoids the shortcomings of existing improved technical solutions.

[0036] Example 2: See Appendix Figure 9 The difference from Embodiment 1 is that the panel 3 has an anti-collision hole 201 at the end corresponding to the stop 1. Everything else is the same as in Embodiment 1 and will not be described again.

[0037] Example 3: See Appendix Figure 10-11 The difference from Embodiment 1 is that, in this example, the panel 3 is provided with a stop through hole for the stop 1 to pass through. The telescopically moving stop 1 passes through the stop through hole and moves toward the base plate 2; when the pressing tongue block descends to clamp the lead wire, the ramp surface abuts against the lead wire on the inner side of the base plate 2. Everything else is the same as in Embodiment 1 and will not be described again.

[0038] Example 4: See Appendix Figure 12-14 The difference from Embodiment 1 is that the ramp surface is a conical surface 401 located at the end of the stop 1. Everything else is the same as in Embodiment 1 and will not be described again.

[0039] Example 5: See Appendix Figure 15 The difference from Embodiment 4 is that the panel 3 is provided with a stop through hole for the stop 1 to pass through. The telescopically moving stop 1 passes through the stop through hole and moves toward the base plate 2. When the pressing tongue block 4 descends to clamp the lead wire, the conical surface 401 abuts against the lead wire with the inner side surface of the base plate 2. Everything else is the same as in Embodiment 4 and will not be described again.

[0040] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in detail with reference to the accompanying drawings to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is limited only to the claims and their full scope and equivalents, and not to the specific embodiments disclosed.

Claims

1. A stopper for a flexible perforation and insertion device for fireworks arrays, the stopper being mounted on an integrated guide mechanism, the integrated guide mechanism comprising a base plate and a cover plate, wherein a lateral gap is formed between the mating surfaces of the base plate and the cover plate for the passage of the lead wire, the stopper being connected to a drive mechanism for telescopic movement, and the base plate or cover plate having a stopper passage hole for the stopper to pass through, characterized in that, The working surface of the stop clamping the lead wire is a sloping surface.

2. The stopper of the flexible perforation and insertion device for fireworks arrays as described in claim 1, characterized in that, The ramp surface is the chamfered portion located at the end of the stop.

3. The stopper of the flexible perforation and insertion device for fireworks arrays as described in claim 1, characterized in that, The ramp surface is a conical surface located at the end of the stop.

4. The stopper of the flexible perforation and insertion device for fireworks arrays as described in claim 1, characterized in that, The base plate is provided with a stop through hole for the stop to pass through. The telescopic stop moves toward the panel through the stop through hole. When the pressing tongue block moves down to clamp the lead wire, the ramp surface abuts against the lead wire with the inner side of the panel.

5. A stopper for a fireworks group pot flexible punch and insert guide device as claimed in claim 4, wherein, The panel has anti-collision holes at the ends of the corresponding stops.

6. A stopper for a fireworks group pot flexible punch and insert guide device as defined in claim 1, wherein, The panel is provided with a stop through hole for the stop to pass through. The telescopic stop moves through the stop through hole toward the base plate. When the pressing tongue block moves down to clamp the lead wire, the ramp surface abuts against the lead wire with the inner side of the base plate.

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