Ribbon dismounting assembly for firework inner cylinder cake and combined firework production equipment

Abstract

The utility model provides a binding belt dismounting assembly for a firework inner cylinder cake and combined firework production equipment, and relates to the technical field of firework production equipment, the binding belt dismounting assembly comprises a binding belt opening mechanism and a binding belt hooking mechanism; the ribbon opening mechanism can unfasten the rubber band connected with the two ends of the ribbon on the inner cylinder cake, so that the two ends of the ribbon can be separated from each other; and the ribbon hooking mechanism can hook the ribbon away from the periphery of the inner cylinder after the rubber band of the ribbon is unfastened, so that the ribbon of the inner cylinder cake is separated from the inner cylinder. When the cable tie dismounting assembly works, firstly, the rubber band is unfastened through the cable tie opening mechanism, so that the two ends of the cable tie can be separated from each other. And then, the binding belt is hooked away from the periphery of the inner cylinder by the binding belt hooking mechanism, so that the binding belt of the inner cylinder cake is separated from the inner cylinder. Therefore, by means of the cable tie dismantling assembly, the cable tie of the inner cylinder cake can be dismantled automatically, manual dismantling of the cable tie of the inner cylinder cake is replaced, automatic feeding is achieved, and the safety of personnel is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of firework production equipment, and particularly relates to a firework inner cylinder cake binding belt removing assembly and combined firework production equipment. BACKGROUND

[0002] The firework inner cylinder is a core component in the structure of the firework, and is mainly responsible for loading the firework propellant and realizing the functions of ascending, exploding and effect display during the burning. Generally, the inner cylinder cake is a basic unit of firework production, and the inner cylinder cake is composed of a plurality of firework inner cylinders combined by a binding belt, and is in a hexagonal shape. The two ends of the binding belt are connected by an elastic band.

[0003] The existing firework inner cylinder feeding equipment mostly loads the firework inner cylinder by using a hopper, and loads the inner cylinder into the hopper by using a manual feeding mode. Therefore, the worker needs to be close to the hopper to perform the inner cylinder feeding operation, and needs to manually remove the binding belt of the inner cylinder cake and then put the inner cylinder into the hopper. The automatic degree is low, and the safety of the worker cannot be guaranteed. CONTENT OF THE INVENTION

[0004] The technical problem to be solved by the present application is that, in view of the above-mentioned deficiencies in the prior art, a firework inner cylinder cake binding belt removing assembly and combined firework production equipment are provided.

[0005] A firework inner cylinder cake binding belt removing assembly, which comprises a binding belt opening mechanism and a binding belt hooking mechanism.

[0006] The binding belt opening mechanism can disengage the elastic band connecting the two ends of the binding belt on the inner cylinder cake, so that the two ends of the binding belt can be separated from each other.

[0007] The binding belt hooking mechanism can hook away the binding belt from around the inner cylinder after the elastic band is disengaged, so that the binding belt of the inner cylinder cake is separated from the inner cylinder.

[0008] Optionally, the binding belt opening mechanism comprises a first action sub-mechanism; the first action sub-mechanism comprises a movement head and a first driving unit; the first driving unit is used to drive the movement head to act, so that the movement head is inserted into the inner ring of the elastic band and winds the elastic band out of the hook-shaped structure at one end of the binding belt.

[0009] Optionally, the first driving unit comprises a first sub-driving unit and a second sub-driving unit.

[0010] The first sub-driving unit is used to drive the movement head to move, so that the movement head is inserted into or withdrawn from the inner ring of the elastic band.

[0011] The second sub-driving unit is used to drive the movement head to eccentrically rotate in the inner ring of the elastic band, so that the movement head winds the elastic band out of the hook-shaped structure at one end of the binding belt.

[0012] Optionally, the first action sub-mechanism further comprises a moving support; the moving support is assembled on the first sub-driving unit; the second sub-driving unit is assembled on the moving support;

[0013] The moving support is further provided with two pressing rods, which are respectively located at two sides of the moving head; when the first sub-driving unit drives the moving head to insert into the inner ring of the rubber band, the heads of the two pressing rods press the two ends of the cable tie respectively.

[0014] Optionally, an elastic element is further arranged between the moving support and the pressing rod; when the first sub-driving unit drives the moving head to insert into the inner ring of the rubber band, the moving support pushes the head of the pressing rod to press the cable tie through the elastic element.

[0015] Optionally, the cable tie opening mechanism further comprises a second action sub-mechanism; the second action sub-mechanism is used to drive the two ends of the cable tie to be staggered with each other along the axial direction of the inner cylinder before the moving head is inserted into the inner ring of the rubber band, so as to expand the inner ring of the rubber band.

[0016] Optionally, the second action sub-mechanism comprises a first top rod, a second top rod and a second driving unit; the second driving unit is used to drive the first top rod and the second top rod to move forward and backward along the axial direction of the inner cylinder;

[0017] The first top rod and the second top rod are located at the same side of the cable tie, and the ends of the first top rod and the second top rod are staggered in the moving direction, so that when the first top rod and the second top rod press the two ends of the cable tie respectively, the two ends of the cable tie can be staggered with each other along the axial direction of the inner cylinder.

[0018] Optionally, the cable tie hooking mechanism comprises a hook-shaped piece and a third driving unit; the hook-shaped piece is used to hook between the cable tie of the inner cylinder cake and the inner cylinder;

[0019] When the hook-shaped piece hooks between the cable tie of the inner cylinder cake and the inner cylinder, the third driving unit can drive the hook-shaped piece to retreat with the cable tie to hook away the cable tie after the rubber band is unwound from the periphery of the inner cylinder.

[0020] Optionally, the cable tie hooking mechanism further comprises an intermediate support, a fourth driving unit and a pressing head; the intermediate support is assembled on the third driving unit; the hook-shaped piece is assembled on the intermediate support; the fourth driving unit is assembled on the intermediate support; and the pressing head is assembled on the fourth driving unit;

[0021] The third driving unit can synchronously drive the hook-shaped piece and the fourth driving unit to move through the intermediate support;

[0022] When the hook-shaped member hooks the rubber band and the inner cylinder, the fourth driving unit can drive the pressure head to move forward to press the rubber band between the pressure head and the hook-shaped member.

[0023] Optionally, the rubber band opening mechanism is a scissor mechanism which opens the rubber band by cutting.

[0024] Optionally, the rubber band opening mechanism is arranged above the inner cylinder cake, and the rubber band hooking mechanism is arranged below the inner cylinder cake.

[0025] In another aspect, the application further provides a combined firework production device, which has the rubber band removing assembly of the firework inner cylinder cake.

[0026] When the rubber band removing assembly works, the rubber band opening mechanism first opens the rubber band, so that the two ends of the rubber band can be separated from each other. Then, the rubber band hooking mechanism hooks the rubber band away from the periphery of the inner cylinder, so that the rubber band of the inner cylinder cake is separated from the inner cylinder. Thus, the technical effect of the application is that the rubber band removing assembly can automatically remove the rubber band of the inner cylinder cake, replacing manual removal of the rubber band of the inner cylinder cake, so as to realize automatic feeding and high automation and high safety of personnel. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the inner cylinder cake in the embodiment of the application.

[0028] Figure 2 is a structural schematic diagram of the rubber band removing assembly in the embodiment of the application.

[0029] Figure 3 is Figure 2 is an enlarged view at A.

[0030] Figure 4 is another structural schematic diagram of the rubber band removing assembly in the embodiment of the application.

[0031] Figure 5 is Figure 4 is an enlarged view at B.

[0032] Figure 6 is a working schematic diagram of the second action sub-mechanism in the embodiment of the application.

[0033] Figure 7 is a working schematic diagram of the rubber band hooking mechanism in the embodiment of the application.

[0034] Figure 8 is another working schematic diagram of the rubber band hooking mechanism in the embodiment of the application.

[0035] Figure 9Fig. 1 is a schematic view of a partial structure of a strap removing assembly in an embodiment of the present application.

[0036] Reference signs: inner tube cake P, strap P1, rubber band P2, inner tube P3, strap opening mechanism 10, first action sub-mechanism 20, moving head 21, first driving unit 22, first sub-driving unit 221, second sub-driving unit 222, moving bracket 23, pressing rod 24, head 241, elastic element 25, second action sub-mechanism 30, first top rod 31, second top rod 32, second driving unit 33, strap hooking mechanism 40, hook-shaped member 41, third driving unit 42, intermediate bracket 43, fourth driving unit 44, pressing head 45, scissors mechanism 50. DETAILED DESCRIPTION

[0037] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope of protection of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted.

[0038] It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict.

[0039] The strap removing assembly provided by the present application is applied to a combined firework production device and is used for strap removal of an inner tube cake to separate the strap of the inner tube cake from the inner tube. The inner tube of the firework is a core component in the structure of the firework and is mainly responsible for loading the pyrotechnic composition and realizing the functions of ascending, exploding and effect display during the burning. Generally, the inner tube cake is a basic unit of firework production, and the inner tube cake is composed of a plurality of inner tubes combined together by a strap, in a hexagonal shape, and the two ends of the strap are connected together by a rubber band. Figure 1 The structure of the inner tube cake is shown, and the inner tube cake P includes the inner tube P3, the strap P1 and the rubber band P2. The inner tube cake P is in a hexagonal shape, the two ends of the strap P1 are connected by the rubber band P2, and the inner tube P3 is located in the inner circle of the strap P1. Specifically, the two ends of the strap P1 are provided with hook-shaped structures, and the rubber band P2 connects the two ends of the strap P1 by hanging on the hook-shaped structures at the two ends of the strap P1.

[0040] Reference Figure 2The strap removing assembly comprises a strap opening mechanism 10 and a strap hooking mechanism 40. The strap opening mechanism can unfasten the rubber band P2 connecting the two ends of the strap P1 on the inner drum cake P, so that the two ends of the strap P1 can be separated from each other. The strap hooking mechanism 40 can hook the strap P1 away from the periphery of the inner drum P3 after the rubber band P2 is unfastened, so that the strap P1 of the inner drum cake P is separated from the inner drum. In an embodiment of the present application, the strap opening mechanism 10 is arranged above the inner drum cake P, and the strap hooking mechanism 40 is arranged below the inner drum cake P.

[0041] In operation, first, the rubber band is unfastened by the strap opening mechanism 10, so that the two ends of the strap P1 can be separated from each other. Then, the strap P1 is hooked away from the periphery of the inner drum P3 by the strap hooking mechanism 40, so that the strap of the inner drum cake is separated from the inner drum. Therefore, the strap removing assembly described above can automatically remove the strap of the inner drum cake, replacing manual removal of the strap of the inner drum cake, so as to realize automatic feeding, with high automation and high safety of personnel.

[0042] In an embodiment of the present application, referring to Figure 3 and Figure 4 The strap opening mechanism 10 comprises a first action sub-mechanism 20; the first action sub-mechanism 20 comprises a moving head 21 and a first driving unit 22; the first driving unit 22 is used to drive the moving head 21 to act, so that the moving head 21 is inserted into the inner circle of the rubber band P2 and winds the rubber band P2 out of the hook-shaped structure at one end of the strap.

[0043] The first driving unit 22 drives the moving head 21 to move along a predetermined motion trajectory, and with the action of the moving head 21, the moving head 21 is inserted into the inner circle of the rubber band P2 and winds the rubber band P2 out of the hook-shaped structure at one end of the strap. It should be understood that the first driving unit 22 can be composed of one or more sub-driving units.

[0044] In an embodiment of the present application, the first driving unit 22 comprises a first sub-driving unit 221 and a second sub-driving unit 222. The first sub-driving unit 221 is used to drive the moving head 21 to move, so that the moving head 21 is inserted into or withdrawn from the inner circle of the rubber band P2. The second sub-driving unit 222 is used to drive the moving head 21 to eccentrically rotate in the inner circle of the rubber band P2, so that the moving head 21 winds the rubber band P2 out of the hook-shaped structure at one end of the strap.

[0045] In operation, first, the first sub-driving unit 221 drives the moving head 21 to move downward, the moving head 21 is inserted into the inner ring of the rubber band P2, then, the second sub-driving unit 222 drives the moving head 21 to eccentrically rotate in the inner ring of the rubber band P2, the moving head 21 winds the rubber band P2 out of the hook-shaped structure at one end of the strap P1. Finally, the first sub-driving unit 221 drives the moving head 21 to move upward, the moving head 21 exits the inner ring of the rubber band P2. At this point, the rubber band P2 connecting the two ends of the strap P1 is unwound.

[0046] In an embodiment of the present application, the first action sub-mechanism 20 further comprises a moving bracket 23; the moving bracket 23 is assembled on the first sub-driving unit 221; the second sub-driving unit 222 is assembled on the moving bracket 23. The moving bracket 23 is further provided with two pressing rods 24, which are respectively located on both sides of the moving head 21; when the first sub-driving unit 221 drives the moving head 21 to insert into the inner ring of the rubber band P2, the heads 241 of the two pressing rods 24 respectively press the straps at both ends. Further, the moving bracket 23 and the pressing rod 24 are further provided with an elastic element 25; when the first sub-driving unit 221 drives the moving head 21 to insert into the inner ring of the rubber band P2, the moving bracket 23 pushes the head 241 of the pressing rod 24 to press the strap P1 through the elastic element 25.

[0047] Specifically, the first sub-driving unit 221 is a pneumatic cylinder, which can drive the moving bracket 23 to move up and down; the second sub-driving unit 222 is a motor, which can drive the moving head 21 to eccentrically rotate. The second sub-driving unit 222 and the pressing rod 24 are arranged on the moving bracket 23. In operation, as the first sub-driving unit 221 drives the moving bracket 23 to move downward, the moving head 21 is inserted into the inner ring of the rubber band P2, at the same time, the heads 241 of the two pressing rods 24 respectively press the straps P1 at both ends. Here, since the two ends of the strap P1 are pressed by the two pressing rods 24, when the second sub-driving unit 222 drives the moving head 21 to eccentrically rotate in the inner ring of the rubber band P2, the strap P1 will not move. Further, the elastic element 25 is a spring, which is arranged between the moving bracket 23 and the pressing rod 24, as the head 241 of the pressing rod 24 moves downward and comes into contact with the strap P1, the strap P1 can be compressed by the elastic element 25 by pressing upward against the pressing rod 24, finally, the pressing rod 24 presses the strap P1 by the elastic element 25.

[0048] In an embodiment of the present application, referring to Figure 5 and Figure 6, the strap opening mechanism 10 further comprises a second action sub-mechanism 30; the second action sub-mechanism 30 is used to drive the two ends of the strap to be staggered with each other along the axial direction of the inner cylinder P3 before the moving head 21 is inserted into the inner ring of the rubber band P2, so as to expand the inner ring of the rubber band P2. When the two ends of the strap are staggered with each other along the axial direction of the inner cylinder P3, the area of the inner ring of the rubber band P2 is increased, so that the moving head 21 can be more easily inserted into the inner ring of the rubber band P2.

[0049] The second action sub-mechanism 30 comprises a first top rod 31, a second top rod 32, and a second driving unit 33; the second driving unit 33 is used to drive the first top rod 31 and the second top rod 32 to move forward and backward along the axial direction of the inner cylinder. The first top rod 31 and the second top rod 32 are located on the same side of the strap, and the ends of the first top rod 31 and the second top rod 32 are staggered in the moving direction, so that when the first top rod 31 and the second top rod 32 respectively abut against the two ends of the strap, the two ends of the strap can be staggered with each other along the axial direction of the inner cylinder. The second driving unit 33 can be specifically a pneumatic cylinder, when the pneumatic cylinder extends forward, the ends of the first top rod 31 and the second top rod 32 synchronously move forward to respectively abut against the two ends of the strap P1, at this time, due to the fact that the ends of the first top rod 31 and the second top rod 32 are staggered in the moving direction, the two ends of the strap P1 are staggered with each other along the axial direction of the inner cylinder P3.

[0050] In an embodiment of the present application, referring to Figure 7 and Figure 8 The strap hooking mechanism 40 comprises a hook-shaped piece 41 and a third driving unit 42; the hook-shaped piece 41 is used to hook between the strap and the inner cylinder of the inner cylinder pie. When the hook-shaped piece 41 hooks between the strap and the inner cylinder of the inner cylinder pie, the third driving unit 42 can drive the hook-shaped piece 41 to retreat with the strap hooked to take the strap after the rubber band P2 is unfastened away from the periphery of the inner cylinder. In work, the hook-shaped piece 41 hooks between the strap P1 and the inner cylinder P3 of the inner cylinder pie P, at this time, with the third driving unit 42 driving the hook-shaped piece 41 to retreat, the hook-shaped piece 41 retreats with the strap P1 hooked to take the strap P1 after the rubber band P2 is unfastened away from the periphery of the inner cylinder P3.

[0051] The strap hooking mechanism 40 further comprises an intermediate support 43, a fourth driving unit 44, and a pressing head 45; the intermediate support 43 is assembled on the third driving unit 42; the hook-shaped piece 41 is assembled on the intermediate support 43; the fourth driving unit 44 is assembled on the intermediate support 43; and the pressing head 45 is assembled on the fourth driving unit 44. The third driving unit 42 can synchronously drive the hook-shaped piece 41 and the fourth driving unit 44 to move through the intermediate support 43; when the hook-shaped piece 41 hooks between the strap and the inner cylinder of the inner cylinder pie, the fourth driving unit 44 can drive the pressing head 45 to move forward to be close to the hook-shaped piece 41, so as to press the strap P1 between the pressing head 45 and the hook-shaped piece 41.

[0052] Specifically, the third driving unit 42 and the fourth driving unit 44 are both air cylinders. The hook-shaped member 41 and the fourth driving unit 44 are both assembled on the middle support 43. When the hook-shaped member 41 hooks into the strap and the inner cylinder between the strap and the inner cylinder, the fourth driving unit 44 can drive the pressure head 45 to move forward relative to the hook-shaped member 41, and the strap P1 is pressed between the pressure head 45 and the hook-shaped member 41. When the third driving unit 42 retracts, the pressure head 45 and the hook-shaped member 41 retreat synchronously, the strap P1 between the pressure head 45 and the hook-shaped member 41 is extracted synchronously, and the strap P1 is separated from the inner cylinder P3. In this design, the strap P1 is pressed between the pressure head 45 and the hook-shaped member 41, which can avoid the strap P1 from being separated from the hook-shaped member 41 when the hook-shaped member 41 retreats, and the action is more reliable.

[0053] Based on the above description, the strap removal assembly provided in the present application can include the following action process when working. Step A, the inner cylinder cake P enters a predetermined position. Step B, the second action sub-mechanism 30 drives the two ends of the strap to be staggered along the axial direction of the inner cylinder P3 to expand the inner circle of the rubber band P2 (the second driving unit 33 drives the first top rod 31 and the second top rod 32 to respectively press against the two ends of the strap, and the two ends of the strap are staggered along the axial direction of the inner cylinder). Step C, the first sub-driving unit 221 drives the moving support 23 to move downward, and the movement head 21 is inserted into the inner circle of the rubber band P2 downward, and at the same time, the heads 241 of the two pressure rods 24 press against the two ends of the strap P1 respectively. Step D, the second sub-driving unit 222 drives the movement head 21 to rotate eccentrically in the inner circle of the rubber band P2, and the movement head 21 winds the rubber band P2 out of the hook-shaped structure of one end of the strap P1. Step E, the second driving unit 33 drives the first top rod 31 and the second top rod 32 to retract, and the first sub-driving unit 221 drives the movement head 21 to move upward, and the movement head 21 exits the inner circle of the rubber band P2. Step F, the fourth driving unit 44 can drive the pressure head 45 to move forward to press the strap P1 between the pressure head 45 and the hook-shaped member 41, and the third driving unit 42 drives the hook-shaped member 41 to retreat, and the hook-shaped member 41 retreats with the strap P1 to take the strap P1 away from the inner cylinder P3. The above steps A-F can separate the strap P1 of the inner cylinder cake P from the inner cylinder. However, it should be understood that the above steps A-F do not mean a strict sequence.

[0054] Reference Figure 9 In an embodiment of the present application, the strap opening mechanism is a scissors mechanism 50, the scissors mechanism 50 has two blades, and the two blades of the scissors mechanism 50 are driven by a driving device. The two blades can be opened and closed to cut the rubber band, and the rubber band is unwound by cutting. After cutting, the strap hooking mechanism 40 can take the strap P1 away from the inner cylinder P3 after the rubber band P2 of the strap P1 is unwound, so as to separate the strap P1 of the inner cylinder cake P from the inner cylinder.

[0055] The application further provides a combined firework production device, which has the firework inner tube cake ribbon removing assembly provided in the foregoing part. The ribbon removing assembly comprises a ribbon opening mechanism 10 and a ribbon hooking mechanism 40. The ribbon opening mechanism can unfasten the rubber band P2 connecting the two ends of the ribbon P1 on the inner tube cake P, so that the two ends of the ribbon P1 can be separated from each other. The ribbon hooking mechanism 40 can hook away the ribbon P1 from the periphery of the inner tube P3 after the rubber band P2 is unfastened, so that the ribbon P1 of the inner tube cake P is separated from the inner tube. In operation, the rubber band is first unfastened by the ribbon opening mechanism 10, so that the two ends of the ribbon P1 can be separated from each other. Then, the ribbon P1 is hooked away from the periphery of the inner tube P3 by the ribbon hooking mechanism 40, so that the ribbon of the inner tube cake is separated from the inner tube. Therefore, the ribbon removing assembly described above can automatically remove the ribbon of the inner tube cake, replace manual removal of the ribbon of the inner tube cake, so as to realize automatic feeding, high automation and high safety of personnel.

[0056] The combined firework production device comprises the firework inner tube cake ribbon removing assembly provided in the foregoing part, and the specific technical means and technical effects are described in the foregoing part, which will not be described herein.

[0057] It should be noted that the first driving unit, the second driving unit, the third driving unit and the fourth driving unit can be various types of driving devices, for example, electric devices, electric devices, for example, air cylinders, electric cylinders, motors, etc.

[0058] In the above embodiments of the application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0059] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise specifically limited. It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of the features, steps, operations, devices, components and / or their combinations.

[0060] The specific embodiments described herein are merely illustrative of the application. Various modifications or changes can be made to the described embodiments without departing from the scope of the application as defined in the claims.

Claims

1. A cable tie removal assembly for a fireworks inner tube disc, characterized in that, The strap removing assembly comprises a strap opening mechanism and a strap hooking mechanism. The strap opening mechanism can loosen the rubber band connecting the two ends of the strap on the inner cylinder cake, so that the two ends of the strap can be separated from each other. The strap hooking mechanism can hook the strap away from the periphery of the inner cylinder after the rubber band is loosened, so that the strap of the inner cylinder cake is separated from the inner cylinder.

2. The bungee removal assembly of a firework inner tube cake according to claim 1, wherein, The strap opening mechanism comprises a first action sub-mechanism; the first action sub-mechanism comprises a moving head and a first driving unit; the first driving unit is used to drive the moving head to act, so that the moving head is inserted into the inner circle of the rubber band and the rubber band is wound out of the hook-shaped structure at one end of the strap.

3. The bungee removal assembly of a firework inner tube cake according to claim 2, wherein, The first driving unit comprises a first sub-driving unit and a second sub-driving unit; The first sub-driving unit is used to drive the moving head to move, so that the moving head is inserted into or withdrawn from the inner circle of the rubber band; The second sub-driving unit is used to drive the moving head to eccentrically rotate in the inner circle of the rubber band, so that the moving head winds the rubber band out of the hook-shaped structure at one end of the strap.

4. The bungee removal assembly of a firework inner tube cake according to claim 3, wherein, The first action sub-mechanism further comprises a moving support; the moving support is assembled on the first sub-driving unit; the second sub-driving unit is assembled on the moving support; The moving support is further provided with two pressing rods, which are respectively located on both sides of the moving head; when the first sub-driving unit drives the moving head to be inserted into the inner circle of the rubber band, the heads of the two pressing rods press the strap at both ends, respectively.

5. The bungee removal assembly of a firework inner tube cake according to claim 4, wherein, An elastic element is further arranged between the moving support and the pressing rod; when the first sub-driving unit drives the moving head to be inserted into the inner circle of the rubber band, the moving support pushes the head of the pressing rod to press the strap through the elastic element.

6. The bungee removal assembly of claim 2, wherein, The strap opening mechanism further comprises a second action sub-mechanism; the second action sub-mechanism is used to drive the two ends of the strap to be staggered with each other along the axial direction of the inner cylinder before the moving head is inserted into the inner circle of the rubber band, so as to expand the inner circle of the rubber band.

7. The bungee removal assembly of a firework inner tube cake according to claim 6, wherein, The second action sub-mechanism comprises a first jacking rod, a second jacking rod and a second driving unit; the second driving unit is used to drive the first jacking rod and the second jacking rod to move forward and backward along the axial direction of the inner cylinder; The first jacking rod and the second jacking rod are located on the same side of the strap, and the ends of the first jacking rod and the second jacking rod are staggered in the moving direction, so that when the first jacking rod and the second jacking rod press the two ends of the strap, respectively, the two ends of the strap can be staggered with each other along the axial direction of the inner cylinder.

8. The bungee removal assembly of a firework inner tube cake according to claim 1, wherein, The strap hooking mechanism comprises a hook-shaped piece and a third driving unit; the hook-shaped piece is used to hook between the strap of the inner cylinder cake and the inner cylinder; When the hook-shaped piece hooks between the strap of the inner cylinder cake and the inner cylinder, the third driving unit can drive the hook-shaped piece to retreat with the strap after the rubber band is loosened, so as to hook the strap away from the periphery of the inner cylinder.

9. The bungee removal assembly of a firework inner tube cake according to claim 8, characterized in that, The strap hooking mechanism further comprises an intermediate support, a fourth driving unit and a pressing head; the intermediate support is assembled on the third driving unit; the hook-shaped piece is assembled on the intermediate support; the fourth driving unit is assembled on the intermediate support; and the pressing head is assembled on the fourth driving unit. The third driving unit can synchronously drive the hook-shaped member and the fourth driving unit to move through an intermediate support; When the hook-shaped member hooks into the inner tube cake, the fourth driving unit can drive the pressure head to move forward to the hook-shaped member to press the strap between the pressure head and the hook-shaped member.

10. The bungee removal assembly of a firework inner tube cake of claim 1, wherein, The strap opening mechanism is a scissors mechanism which opens the strap by cutting.

11. The bungee removal assembly of a firework inner tube cake according to claim 1, wherein, The strap opening mechanism is arranged above the inner tube cake, and the strap hooking mechanism is arranged below the inner tube cake.

12. A combination fireworks production apparatus, characterized by, The combined firework production device has the strap removing assembly of the firework inner tube cake as claimed in any one of claims 1-11.

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