Flexible clamping and conveying device for firework leads

Abstract

The utility model discloses a flexible clamping and conveying device for a firework lead, which comprises an elastic groove connected with a driving mechanism to do linear motion or rotary motion, and the firework lead is partially embedded and passes through the elastic groove; and the clamping pieces correspondingly abut against the two side walls of the elastic groove. The firework lead passing through the elastic groove is clamped through deformation of the side wall of the elastic groove of the clamping part, and necessary clamping force is provided to ensure the conveying reliability of the firework lead. Meanwhile, the elastic groove and the firework lead embedded in the elastic groove have a large contact area to share the clamping force of the deformation part, the stress pressure of the firework lead is reduced, and therefore the firework lead is effectively protected; and meanwhile, the structure is simple.

Description

Technical Field

[0001] The utility model relates to a device for clamping a fireworks fuse for transportation. Background Art

[0002] Firework fuses are typically conveyed by clamping the wire between two wheels, with the friction between the driven and driving wheels responsible for the wire's movement. However, to achieve this conveyance, the inherent clamping force between the two wheels compresses the wire, which can easily damage both the inside and outside of the fuse. For example, damage to the paint layer weakens its structural strength, making it soft and difficult to insert into the fuse hole. Furthermore, compression can cause the pyrotechnic powder particles within the fuse to break up, altering its properties and affecting its ignition speed.

[0003] Improvements to the above problems in the prior art include:

[0004] On January 20, 2016, the Chinese utility model patent document with authorization publication number CN204988038U disclosed a "delivery wheel for fireworks production": a groove formed at the contact point between two parallel rubber rings serves as a channel for the fuse, and the elastic buffering effect of the rubber rings protects the fuse. However, the two rubber rings only contact the fuse at the tangent part, and the clamping force at the contact part is still too large, which cannot effectively fulfill the mission of protecting the fuse.

[0005] The Chinese invention patent document with application publication number CN105547052A, published on May 4, 2016, discloses a "firework fuse conveying device": comprising a driving wheel (1), a first roller (5), and a second roller (6), wherein a flexible conveyor belt (8) is wound around the first roller (5) and the second roller (6), and the flexible conveyor belt (8) partially wraps around the outer periphery of the driving wheel (1). The flexible conveyor belt (8) cooperates with the driving wheel (1) to achieve flexible clamping of the fuse. However, its conveying reliability is reduced, and the number of auxiliary components increases, making the structure complex. Utility Model Content

[0006] To address the aforementioned drawbacks, the present invention aims to provide a device for clamping and conveying firework fuses, ensuring reliable conveying while effectively protecting the fuses. To address the aforementioned technical issues, the present invention employs a flexible firework fuse clamping and conveying device, characterized by comprising an elastic groove connected to a drive mechanism for linear or rotational motion, with the firework fuse partially embedded in and passing through the elastic groove; and also comprising a clamping member correspondingly abutting the two side walls of the elastic groove.

[0007] The beneficial effect of the present invention is that the clamping pieces abutting against the two side walls of the elastic groove cause the side walls of the elastic groove of the clamping part to deform, thereby clamping the firework fuse passing through the elastic groove and providing the necessary clamping force to ensure the reliability of the firework fuse transmission; at the same time, the elastic groove and the firework fuse embedded therein have a large contact area to share the clamping force of the deformed part, thereby reducing the stress pressure on the firework fuse, thereby effectively protecting the firework fuse; at the same time, it also has the advantage of being simple and easy to use.

[0008] In one embodiment, the clamping member elastically clamps the two side walls of the elastic groove. The elastic clamping can be a first elastic clamping effect achieved by using an elastic material for the clamping member, a second elastic clamping effect achieved by connecting an elastic component such as a spring, or a third elastic clamping effect achieved by combining the first and second elastic clamping effects.

[0009] In one embodiment, the elastic groove is a first circular groove arranged on the outer periphery of the first rotating body or a linear groove arranged on the linear motion body; the clamping body is a second circular groove arranged on the second rotating body, and the inner wall of the second circular groove abuts against the outer wall of the first circular groove or the linear groove.

[0010] In one embodiment, the cross section of the first circular groove is U-shaped, and the cross section of the second circular groove is V-shaped or trapezoidal.

[0011] In one embodiment, the first rotating body is a driving wheel, and the second rotating body is a driven wheel.

[0012] In one embodiment, during the abutment between the elastic groove and the clamping member, the abutment surface of the elastic groove and / or the clamping member is a slope. The angles of the slopes of the elastic groove and the clamping member may be the same or different. Preferably, the included angle of the abutment slope of the clamping member is greater than the included angle of the abutment slope of the elastic groove.

[0013] In one embodiment, a driving wheel and a driven wheel mounted on a base plate are used to convey the fuse of a firework. The driving wheel is driven by a motor, and the rotating shaft of the driven wheel is mounted on a swing arm. A spring connected to the swing arm forces the driven wheel to move closer to the driving wheel. The elastic groove is a first circular groove disposed on the outer circumference of the driving wheel, and the clamping member is a second circular groove disposed on the outer circumference of the driven wheel. Under the action of the spring, the two inner walls of the second circular groove respectively abut the two outer walls of the elastic groove, thereby achieving elastic clamping of the elastic groove by the clamping member.

[0014] The flexible clamping and conveying device for firework fuses can be used in firework pot assembling machines, firework coiling machines, firework inserting machines, etc.

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

[0016] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0017] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0019] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate 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 implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of Example 1.

[0023] Figure 2 This is a structural diagram of Example 2.

[0024] Figure 3 This is a structural diagram of Example 3.

[0025] Figure 4 This is a schematic structural diagram of Example 4.

[0026] Figure 5 is a schematic diagram of the three-dimensional structure of Example 5 (the wedge-shaped block is not shown);

[0027] Figure 6 Schematic diagram of the side structure of Example 5 (showing the wedge-shaped block).

[0028] Figure 7 This is a structural diagram of Example 6.

[0029] Figure 8 This is a schematic diagram of the overall structure of Example 7;

[0030] Figure 9 Schematic diagram of the overall structure of Example 7 (with the swing arm and tension spring removed);

[0031] Figure 10 Schematic diagram of the coordination structure of the driving wheel, the driven wheel and the firework fuse of Example 7;

[0032] Figure 11 Schematic diagram of the coordination structure of the elastic groove, the clamping member and the firework fuse of Example 7.

[0033] Figure 12 This is a schematic diagram of the overall structure of Example 8. DETAILED DESCRIPTION

[0034] Example 1: See attached Figure 1 , reflecting a specific structure of the present invention. The flexible clamping and conveying device for fireworks fuses includes an elastic groove 101, which is a circular groove arranged on the outer periphery of the driving wheel 102. The driving wheel 102 is connected to the driving mechanism through a rotating shaft 106 to perform rotational motion. In the example, the abutting mating surface between the elastic groove 101 and the clamping member 104 is a slope 105, so that the side wall of the elastic groove 101 is easy to deform. The cross-section of the elastic groove 101 in the example is U-shaped, which facilitates the partial embedding and passing of the cylindrical fireworks fuse 103 through the elastic groove 101. In other embodiments, the cross-sectional shape of the elastic groove 101 can be other shapes that adapt to the shape of the fireworks fuse. The material of the elastic groove is elastic material such as rubber, plastic, and the like.

[0035] The device also includes two separate clamping members 104. These two clamping members 104 abut against the outer walls of the elastic groove 101, respectively. The entire clamping member 104 or the abutting portion thereof is made of an elastic material, providing an elastic clamping effect against the elastic groove 101. In this example, the clamping member 104 is a wheel rotatably mounted on the frame to reduce wear on the abutting surface. In other embodiments, the clamping member may also have other shapes that are fixedly mounted on the frame.

[0036] When the driving wheel 102 rotates, the two clamping members 104 cause the two side walls of the elastic groove 101 passing through the clamping part to deform inwardly, and the deformation part clamps the firework fuse 103 passing through the elastic groove 101, providing the necessary clamping force so that the rotating driving wheel 102 clamps and drags the firework fuse 103 and rotates forward, ensuring the reliability of the firework fuse transportation; at the same time, although the abutment between the elastic groove 101 and the clamping member 104 is limited to the tangential part of the two, the deformation part formed on the side wall of the elastic groove is larger, and the elastic groove 101 and the firework fuse 103 embedded therein have a large contact area to share the clamping force of the deformation part, thereby greatly reducing the force pressure on the clamped part of the firework fuse 103, thereby effectively protecting the firework fuse 103.

[0037] Example 2: See attached Figure 2, reflecting another specific structure of the present invention. The difference from Example 1 is that the clamping member is an integrated V-shaped groove body 201. The notch of the V-shaped groove body 201 faces the elastic groove 202, and the two inner walls of the V-shaped groove body 201 respectively abut the two outer walls of the elastic groove 202 to achieve clamping. All other aspects are similar to Example 1.

[0038] Example 3: See attached Figure 3 , reflecting another specific structure of the present invention. The difference from Example 1 lies in that the clamping member comprises two conical wheels 301. The conical surfaces 302 of the two conical wheels 301 are mounted opposite each other at the ends of the rotating shaft 303, forming circular grooves with a trapezoidal cross-section. The two conical surfaces 302 respectively abut the two outer walls of the elastic groove 305 to achieve clamping. Springs 304 are respectively provided on the outer ends of the two conical wheels 301 to achieve an elastic clamping effect on the elastic groove 305. The entirety of the two conical wheels 301 or the conical surfaces 302 can also be made of an elastic material to achieve an elastic clamping effect on the elastic groove 305. All other aspects are similar to Example 1.

[0039] Example 4: See attached Figure 4 , reflecting another specific structure of the present invention. This differs from Example 3 in that the inner ends of the two conical wheels 401 forming the clamping member fit together to form a circular groove with a V-shaped cross-section. A spring 402 is provided on the outer end of one conical wheel 401 to provide an elastic clamping effect against the elastic groove 403. All other aspects are similar to Example 3.

[0040] Example 5: See attached Figure 5-6 , reflecting another specific structure of the present invention. The difference from Example 3 is that the elastic groove is a linear groove 502 provided on the strip body 501, and the strip body 501 is connected to the first cylinder 503 to perform linear reciprocating motion. The inner wall of the circular groove 505 between the two conical wheels 504 is the abutment surface for clamping the outer wall of the linear groove 502. A wedge block 506 that can be telescoped up and down is provided above the corresponding circular groove 505, and the telescopic movement can be driven by a cylinder. When the wedge block 506 extends downward, it pushes the two conical wheels 504 to move outward along the rotating shaft 507, thereby releasing the clamping state of the linear groove 502, and the wedge block 506 resumes the clamping when it is retracted.

[0041] When the strip 501 moves forward, the two conical wheels 504 in the clamping state cause the two side walls of the elastic groove 502 passing through the clamping portion to deform inwardly. The deformed portion clamps the firework fuse 508 passing through the elastic groove 502, providing the necessary clamping force so that the strip 501 drags the firework fuse 508 forward; when the strip 501 retreats and resets, the wedge block 506 extends downward to release the clamping of the linear groove 502, so that the firework fuse 508 does not retreat.

[0042] In this example, multiple sets of conical wheels serving as clamping members are provided to ensure sufficient clamping force, and these multiple sets of clamping members are distributed in parallel along the strip 501. In other embodiments, when using rotating elastic grooves, multiple sets of clamping members can also be provided distributed along the circumference of the rotating body to distribute the clamping force and ensure sufficient clamping force.

[0043] Example 6: See attached Figure 7 , reflecting another specific structure of the present invention. The difference from Example 4 is that the clamping member is an integral rotating wheel 601, and a circular groove 602 with a V-shaped cross section is provided on the outer periphery of the rotating wheel 601. The two side walls of the clamped portion of the elastic groove 603 are provided with a clamping member 605 that encircles the firework fuse 604. This further improves the reliability of transportation while still effectively protecting the firework fuse.

[0044] Example 7: See attached Figure 8-11 , reflecting a specific structure of the present invention. Three sets of driving wheels 702 and driven wheels 703 are mounted on a base plate 701. They are used to transport three firework fuses 700. The driving wheels 702 are driven by a motor 704, while the rotating shafts of the driven wheels 703 are mounted on a swing arm 705. One end of the swing arm 705 is hinged to the base plate 701, and the other end is connected to a tension spring 706, which forces the driven wheels 703 toward the driving wheels 702. The base plate 701 also has guide grooves 707 for the three firework fuses 700. A panel can be provided on the base plate 701 to cover these guide grooves 707.

[0045] In this example, the elastic groove 708 is a first circular groove provided on the outer circumference of the driving pulley 702, and the clamping member is a second circular groove 709 provided on the outer circumference of the driven pulley 703. The first circular groove has a U-shaped cross-section, while the second circular groove 709 has a V-shaped cross-section. Under the pull of the tension spring 706, the inner walls of the second circular groove 709 abut against the outer walls of the elastic groove 708, achieving elastic clamping of the elastic groove by the clamping member.

[0046] In the example, Figure 11 As shown, the included angle of the abutting slope of the clamping member is greater than the included angle of the abutting slope of the elastic groove. Specifically, the included angle A of the slopes of the two inner walls of the second circular groove 709 is greater than the included angle B of the slopes of the two outer walls of the elastic groove 708. Due to this elastic clamping effect, the deeper the elastic groove 708 penetrates into the second circular groove 709, the greater the clamping force. When the wire diameter of the same firework fuse 700 varies (e.g., the positive and negative deviations allowed by the standard value in fuse manufacturing), the clamping force can dynamically adapt to these changes and provide appropriate clamping force.

[0047] The conveying device in the example has a simple structure and a compact size. When used in equipment such as fireworks pot assembling machines, fireworks coiling machines, and fireworks inserting machines, it can adapt well to cramped working environments.

[0048] Example 8: See attached Figure 12 , reflecting a specific structure of the present invention. The difference from Example 7 is that, whereas the driven wheel 703 in Example 7 is located to the left of the driving wheel 702, in this example, the driven wheel 801 is located to the right of the driving wheel 802. The functioning of the tension spring 803 and the swing arm 804 is modified accordingly: the middle portion of the swing arm 804 is hinged to the base plate, one end of the swing arm 804 is connected to the tension spring 803, and the other end is connected to the rotating shaft of the driven wheel 801, allowing the driven wheel 801 to move closer to the driving wheel 802 for elastic clamping.

[0049] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described. Obviously, many modifications and changes can be made based on the contents of this specification. This specification selects and describes these embodiments in detail in conjunction with the accompanying drawings in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. 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 violating the connotation of the present invention. Therefore, the present invention is only limited by the claims and their full scope and equivalents, and is not limited by the specific embodiments disclosed.

Claims

1. A flexible clamping and conveying device for fireworks fuse, characterized in that: It includes an elastic groove connected to a driving mechanism for linear or rotational motion, wherein the firework fuse is partially embedded in and passes through the elastic groove; and it also includes a clamping piece corresponding to the two side walls of the elastic groove.

2. A flexible clamping and conveying device for firework fuses according to claim 1, characterized in that: The clamping piece elastically clamps the two side walls of the elastic groove.

3. A flexible clamping and conveying device for firework fuses according to claim 1 or 2, characterized in that: The elastic groove is a first circular groove arranged on the outer periphery of the first rotating body or a linear groove arranged on the linear motion body; the clamping body is a second circular groove arranged on the second rotating body, and the inner wall of the second circular groove abuts against the outer wall of the first circular groove or the linear groove.

4. A flexible clamping and conveying device for firework fuses according to claim 3, characterized in that: The cross section of the first circular groove is U-shaped, and the cross section of the second circular groove is V-shaped or trapezoidal.

5. A flexible clamping and conveying device for firework fuses according to claim 3, characterized in that: The first rotating body is a driving wheel, and the second rotating body is a driven wheel.

6. A flexible clamping and conveying device for firework fuses according to any one of claims 1, 2, 4 and 5, characterized in that: The abutting matching surface of the elastic groove and / or the clamping member is a slope surface.

7. A flexible clamping and conveying device for firework fuses according to claim 3, characterized in that: The abutting matching surface of the elastic groove and / or the clamping member is a slope surface.

8. A flexible clamping and conveying device for firework fuses according to claim 6, characterized in that: The included angle of the abutting and fitting slope of the clamping member is greater than the included angle of the abutting and fitting slope of the elastic groove.

9. A flexible clamping and conveying device for firework fuses according to any one of claims 1, 2, 4, 5, and 7, characterized in that: The driving wheel and driven wheel installed on the base plate are used to transport the fireworks fuse; the driving wheel is driven to rotate by the motor, and the rotating shaft of the driven wheel is installed on the swing arm. The swing arm is connected to the spring to make the driven wheel close to the driving wheel; the elastic groove is a first circular groove set on the outer periphery of the driving wheel, and the clamping piece is a second circular groove set on the outer periphery of the driven wheel; under the action of the spring, the two inner walls of the second circular groove respectively abut the two outer walls of the elastic groove.

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