Firecracker cylinder compressing device and firecracker cylinder bundling device

Abstract

The invention discloses a firecracker tube compressing device and a firecracker tube bundling device, and relates to the technical field of firecracker processing, the firecracker tube compressing device comprises a plurality of extruding blocks and a first driving mechanism, the plurality of extruding blocks are arranged in an annular track, and a placing area for containing firecracker tubes is arranged among the plurality of extruding blocks; the multiple extrusion blocks are all connected with the first driving mechanism, the first driving mechanism can drive the multiple extrusion blocks to synchronously move in the radial direction of the containing area, the firecracker barrels can contract in the radial direction through the extrusion blocks, after the firecracker barrels contract, the firecracker barrels are bundled through the bundling material, equivalently, pre-tightening force is applied to the firecracker barrels before bundling, and the firecracker barrels are bundled through the bundling material; due to the fact that the firecracker cylinder has certain elasticity, after extrusion force of the extrusion block is removed, the firecracker cylinder tends to expand outwards, at the moment, the bundling material can be tightened on the outer side wall of the firecracker cylinder, tight connection between paper cylinders is guaranteed, and the overall strength of the firecracker cylinder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of firecracker processing, in particular to a firecracker tube compression device and a firecracker tube bundling device. Background Art

[0002] In traditional fireworks manufacturing, firecracker tubes are typically assembled from multiple independent paper tubes (such as single-shot effect tubes or powder tubes) that are secured together by external binding or tightening. A common method involves using binding materials such as rope, wire, or tape to arrange the tubes side by side or stacked, then applying external restraint to form a cohesive structure.

[0003] However, due to the lack of effective preload control, this fixing method can only provide limited radial constraints due to the external bundling, and a tight and stable connection cannot be formed between the paper tubes, resulting in a loose structure of the firecracker tubes. During transportation, storage or burning, the paper tubes are easily displaced or loosened due to vibration, temperature and humidity changes or the impact of gunpowder combustion, affecting safety during burning. Summary of the Invention

[0004] The purpose of the present invention is to provide a firecracker tube compression device and a firecracker tube bundling device, which can apply radial extrusion force to a firecracker tube composed of multiple independent paper tubes stacked together through an extrusion block, so that the firecracker tube can produce radial elastic deformation, and then bundle it to improve the overall strength of the finished firecracker tube.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a firecracker tube compression device, comprising:

[0007] Extrusion blocks, wherein a plurality of the extrusion blocks are provided and arranged in a circular track, and a placement area for accommodating firecracker tubes is provided between the plurality of extrusion blocks, and the axis of the firecracker tube is parallel to the axis of the placement area;

[0008] And a first driving mechanism, multiple extrusion blocks are connected to the first driving mechanism, the first driving mechanism can drive multiple extrusion blocks to move synchronously along the radial direction of the placement area, and the extrusion blocks can cause the firecracker tube to shrink radially.

[0009] In one embodiment, the first driving mechanism includes an eccentric shaft and a first power source, the eccentric shaft being in transmission connection with the first power source, the first power source being used to drive the eccentric shaft to rotate, any one of the extrusion blocks being provided with a special-shaped hole, the axis of the special-shaped hole being parallel to the axis of the placement area, the first end of the eccentric shaft extending into the special-shaped hole, and the eccentric shaft being able to push the extrusion block to move toward or away from the firecracker tube through the special-shaped hole;

[0010] Preferably, a support frame is further included, a limiting column is provided on the support frame, and a first waist-shaped hole is also provided on the extrusion block, the axis of the first waist-shaped hole is parallel to the axis of the special-shaped hole, and the extrusion block is slidably installed on the support frame through the first waist-shaped hole, the length direction of the first waist-shaped hole is parallel to the moving direction of the extrusion block, and the width of the first waist-shaped hole matches the size of the limiting column.

[0011] As one embodiment, the first driving mechanism also includes a transmission ring, which is transmission-connected to the first power source, and a first tooth is provided on the inner wall of the transmission ring. The second end of the eccentric shaft extends into the transmission ring, and a second tooth is provided on the outer wall of the second end of the eccentric shaft. The first teeth are meshed with the second teeth, and the first power source can drive the transmission ring to rotate.

[0012] As one embodiment, the first power source is a telescopic mechanism, which is arranged on one side of the transmission ring along the radial direction of the transmission ring. The telescopic direction of the output shaft of the telescopic mechanism is perpendicular to the axis of the transmission ring. A drive shaft is provided on the output shaft of the telescopic mechanism, and the axis of the drive shaft is parallel to the axis of the transmission ring. A second waist-shaped hole is provided on the transmission ring, and the length direction of the second waist-shaped hole is arranged along the radial direction of the transmission ring. The width of the second waist-shaped hole matches the drive shaft.

[0013] As one embodiment, it also includes a first pushing device, which is arranged on one side of the placement area along the axial direction of the placement area. The output shaft of the first pushing device is arranged corresponding to the firecracker tube, and the extension direction of the output shaft of the first pushing device is parallel to the axis of the placement area.

[0014] The present invention also discloses a firecracker tube bundling device, comprising:

[0015] The aforementioned firecracker tube compression device;

[0016] A supporting device, the supporting device is arranged on one side of the placement area along the axial direction of the placement area, the supporting device includes a plurality of supporting columns, the supporting columns are used to support a strapping belt, and the strapping belt is coaxially arranged with the firecracker tube;

[0017] and a second pushing device, which is used to push the binding belt on the supporting column toward the firecracker tube compression device.

[0018] As one embodiment, the support device also includes a support seat and a sliding block, the sliding block is slidably connected to the support seat, and one of the sliding blocks is installed on the support column. The support device also includes a second driving mechanism, the second driving mechanism includes a driving wheel, a plurality of arc-shaped protrusions are arranged at circumferential intervals on the driving wheel, the inner arc surface of the arc-shaped protrusion is connected to the outer circumferential surface of the driving wheel, the driving wheel is rotatably arranged on the support seat, a plurality of sliding blocks are arranged around the outer side of the driving wheel, and a rotating wheel is provided at one end of the sliding block close to the driving wheel, the axis of the rotating wheel is arranged parallel to the axis of the driving wheel, and the rotating wheel is against the outer arc surface of the driving wheel.

[0019] As one embodiment, the second pushing device includes a push rod and a two-axis motion mechanism, the end of the push rod is used to abut the end of the strapping belt on the support column, and the push rod is installed on the output shaft of the two-axis motion mechanism, and the output shaft of the two-axis motion mechanism can move axially and radially along the placement area.

[0020] As an embodiment, it further comprises a telescopic device, wherein the output shaft of the telescopic device is parallel to the axis of the firecracker tube, and the supporting device is mounted on the output shaft of the telescopic device;

[0021] and a heating device, wherein a heating head of the heating device is arranged on the outside of the support column along the radial direction of the placement area, and the heating head is used to heat the portion of the strapping belt that bypasses the support column, and the strapping belt has thermoplasticity.

[0022] As an embodiment, it further includes a sliding baffle, which is slidably arranged on a side of the firecracker tube compression device close to the supporting device. The sliding baffle is spaced apart from the extrusion block and can slide radially along the placement area.

[0023] Compared with the prior art, the present invention has achieved the following technical effects:

[0024] In the firecracker tube compression device disclosed in the present invention, a placement area for placing firecracker tubes can be formed by multiple extrusion blocks arranged in a circular trajectory. The axis of the firecracker tube is parallel to the axis of the placement area. The extrusion blocks are connected to a first driving mechanism. The first driving mechanism can simultaneously drive multiple extrusion blocks to move radially along the placement area. In the process of the extrusion blocks approaching the axis of the placement area, the firecracker tubes placed in the placement area can be squeezed and the firecracker tubes can be radially contracted. After the firecracker tubes are contracted, they are bundled with bundling materials, which is equivalent to applying a pre-tightening force to the firecracker tubes before bundling. Since the firecracker tubes have a certain elasticity, after the extrusion blocks remove the extrusion force, the firecracker tubes will tend to expand outward. At this time, the bundling materials can be tightened on the outer wall of the firecracker tube, ensuring a close connection between each paper tube and improving the overall strength of the firecracker tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 Schematic diagram of the structure of the firecracker tube compression device in an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of a transmission ring in an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of a push plate in an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a support frame according to an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of a firecracker tube bundling device according to an embodiment of the present invention;

[0031] Figure 6 is a schematic diagram of a supporting device in an embodiment of the present invention;

[0032] Figure 7 for Figure 6 Schematic diagram from another perspective;

[0033] Figure 8 Schematic diagram of the cooperation between the sliding block and the sliding seat in an embodiment of the present invention.

[0034] Among them, 1. Extrusion block; 2. Firecracker tube; 3. Eccentric shaft; 4. First power source; 5. Special-shaped hole; 6. Support frame; 7. Limit column; 8. First waist-shaped hole; 9. Transmission ring; 10. First tooth; 11. Second tooth; 12. Drive shaft; 13. Second waist-shaped hole; 14. First pushing device; 15. Support column; 16. Strapping belt; 17. Support seat; 18. Sliding block; 19. Drive wheel; 20. Arc convex 21. Rotating wheel; 22. Push rod; 23. Telescopic device; 24. Heating device; 25. Sliding baffle; 26. Mounting plate; 27. Push plate; 28. Sliding seat; 29. Mounting slot; 30. First slide slot; 31. Second slide slot; 32. First telescopic assembly; 33. Second telescopic assembly; 34. Telescopic rod; 35. Lifting device; 36. Support plate; 37. Base; 38. Drive plate; 39. Drive rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to provide a firecracker tube compression device and a firecracker tube bundling device to solve the problems existing in the prior art. The squeezing block can apply a pre-tightening force to the firecracker tube before bundling, thereby improving the structural stability of the finished firecracker tube.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Please refer to Figure 1-8The firecracker tube compression device disclosed in the embodiment of the present invention includes: a squeezing block 1 and a first driving mechanism. A plurality of squeezing blocks 1 are provided, and the plurality of squeezing blocks 1 are arranged in a circular trajectory. A placement area for accommodating the firecracker tube 2 is provided between the plurality of squeezing blocks 1. When the firecracker tube 2 is placed in the placement area, the axis of the firecracker tube 2 is parallel to the axis of the placement area. The plurality of squeezing blocks 1 are all connected to the first driving mechanism. The first driving mechanism can drive the plurality of squeezing blocks 1 to move synchronously along the radial direction of the placement area. The working principle is as follows: a firecracker tube 2 composed of a plurality of independent paper tubes is placed in the placement area, and the axis of the firecracker tube 2 is parallel to the axis of the placement area. The first driving mechanism drives the plurality of squeezing blocks 1 to move simultaneously along the radial direction of the placement area toward the axis of the placement area. Since the plurality of squeezing blocks 1 are in a circular shape, Arrangement, therefore, in the process of the extrusion block 1 continuously moving toward the axial direction of the placement area, the firecracker tube 2 can produce radial contraction, and then the radially contracted firecracker tube 2 is bundled together by the bundling material. Since the firecracker tube 2 has a certain elasticity, if the extrusion force of the extrusion block 1 is removed in a natural state, the firecracker tube 2 will restore its deformation, and the bundling material is bundled to the periphery of the firecracker tube 2 when the firecracker tube 2 has radial contraction deformation. Therefore, when the extrusion force is removed, the firecracker tube 2 has a tendency to restore its original state, and the bundling material can be tightened to the periphery of the firecracker tube 2, that is, by first squeezing and then bundling, a pre-tightening force is applied to the firecracker tube 2, so that multiple independent paper tubes can be tightly connected together under the friction generated by the extrusion force, thereby improving the overall stability of the finished firecracker tube 2.

[0039] In this embodiment, the surface of the extrusion block 1 that is in contact with the firecracker tube 2 can be a flat surface or a curved surface.

[0040] In this embodiment, the number of extrusion blocks 1 is six, and the surface of the extrusion block 1 used to contact the firecracker tube 2 is a plane. The six extrusion blocks 1 are arranged in a circular trajectory, and the radial cross-section of the placement area formed around them is a regular hexagon. It is used to produce firecracker tubes 2 with a regular hexagonal radial cross-section.

[0041] In this embodiment, those skilled in the art can directly wrap the bundling material around the outside of the squeezed firecracker tube 2 by winding. Specifically, the firecracker tube 2 is made of paper material. After the squeezing force of the compressed firecracker tube 2 is removed, the firecracker tube 2 will not instantly return to its original shape, but will gradually recover. By utilizing this time gap, the staff can complete the winding and bundling operation.

[0042] It can be understood that when the surface of the extrusion block 1 used to contact the firecracker tube 2 is a plane, if the number of extrusion blocks 1 is three, the radial cross-section of the placement area formed by the three extrusion blocks 1 is an equilateral triangle; when the number of extrusion blocks 1 is four, the radial cross-section of the placement area formed by the four extrusion blocks 1 is a regular quadrilateral, and so on; when the surface of the extrusion block 1 used to contact the firecracker tube 2 is a curved surface, multiple curved surfaces can constitute a placement area with a circular cross-section.

[0043] In this embodiment, the first driving mechanism includes an eccentric shaft 3 and a first power source 4. The eccentric shaft 3 is transmission-connected to the first power source 4. The first power source 4 is used to drive the eccentric shaft 3 to rotate. A special-shaped hole 5 is provided on any extrusion block 1. The axis of the special-shaped hole 5 is parallel to the axis of the placement area. The first end of the eccentric shaft 3 extends into the special-shaped hole 5. The eccentric shaft 3 can push the extrusion block 1 to move toward or away from the firecracker tube 2 through the special-shaped hole 5; specifically, the main shaft neck of the eccentric shaft 3 is transmission-connected to the first power source 4, and the end of the eccentric section of the eccentric shaft 3 away from the main shaft neck extends into the special-shaped hole 5 as the first end. Along the movement direction of the extrusion block 1, the size of the special-shaped hole 5 is smaller than the diameter of the rotation trajectory of the eccentric section. Along the direction perpendicular to the movement direction of the extrusion block 1, the size of the special-shaped hole 5 is greater than or equal to the diameter of the rotation trajectory of the eccentric section. Therefore, during the rotation process, the eccentric section can push the extrusion block 1 to approach or away from the firecracker tube 2 along the radial direction of the placement area. It can be understood that the special-shaped hole 5 here means: the size of the hole along the movement direction of the extrusion block 1 is smaller than the diameter of the rotation trajectory of the eccentric section, and the size along the direction perpendicular to the movement direction of the extrusion block 1 is greater than or equal to the diameter of the rotation trajectory of the eccentric section. As long as the above conditions are met, there is no other reference meaning.

[0044] In this embodiment, the firecracker tube compression device also includes a support frame 6, on which a limiting column 7 is provided, and a first waist-shaped hole 8 is further provided on the extrusion block 1. The axis of the first waist-shaped hole 8 is parallel to the axis of the special-shaped hole 5, and the extrusion block 1 is slidably installed on the support frame 6 through the first waist-shaped hole 8. The length direction of the first waist-shaped hole 8 is parallel to the moving direction of the extrusion block 1, and the width of the first waist-shaped hole 8 matches the size of the limiting column 7. It can be understood that the waist-shaped hole is composed of semicircles at both ends and parallel straight edges in the middle, which can provide position adjustment space for parts. The size of the waist-shaped hole in the width direction is the same as the diameter of the semicircles at both ends, and the size of the length direction is greater than the diameter of the semicircles at both ends. That is to say, the size of the waist-shaped hole in the length direction is greater than the size of the limiting column 7, so the limiting column 7 can move in the length direction of the waist-shaped hole, but cannot move in the width direction of the waist-shaped hole. The limiting column 7 is installed on the support frame 6, so the extrusion block 1 can, with the cooperation of the waist-shaped hole and the limiting column 7, strictly approach or move away from the firecracker tube 2 along the radial direction of the placement area, thereby ensuring the uniqueness of the movement trajectory of the extrusion block 1.

[0045] In this embodiment, an extension portion is provided at one end of the first waist-shaped hole, and the extension portion extends from the inner side wall of the semicircle at one end along the length direction toward the semicircle at the other end, and the corresponding limiting column 7 is provided with a recessed portion that matches the extension portion.

[0046] In this embodiment, the first drive mechanism also includes a transmission ring 9, which is in transmission connection with the first power source 4. A first tooth 10 is provided on the inner wall of the transmission ring 9. The second ends of the multiple eccentric shafts 3 all extend into the transmission ring 9. The outer wall of the second end of the eccentric shaft 3 is provided with a second tooth 11. The first tooth 10 is meshed with the second tooth 11. The first power source 4 can drive the transmission ring 9 to rotate, and the transmission ring 9 can simultaneously drive the multiple eccentric shafts 3 to rotate. The multiple eccentric shafts 3 rotate synchronously, ensuring that the extrusion block 1 can move synchronously, thereby ensuring the uniformity of the deformation of the firecracker tube 2. It can be understood that the second end of the eccentric shaft 3 is the end of the main shaft neck of the eccentric shaft 3 away from the eccentric section, and the axis of the transmission ring 9 is coaxial with the axis of the placement area.

[0047] In this embodiment, the firecracker tube compression device also includes a mounting plate 26, which is arranged on the side of the support frame 6 close to the first pushing device 14. The mounting plate 26 is connected to the support frame 6. A through hole is provided on the mounting plate 26 for the eccentric shaft 3 to pass through. The main shaft neck of the eccentric shaft 3 is rotatably mounted in the through hole on the mounting plate 26.

[0048] In this embodiment, the first power source 4 is a telescopic mechanism, which is arranged on one side of the transmission ring 9 along the radial direction of the transmission ring 9. The telescopic direction of the output shaft of the telescopic mechanism is perpendicular to the axis of the transmission ring 9. A drive shaft 12 is provided on the output shaft of the telescopic mechanism. The axis of the drive shaft 12 is parallel to the axis of the transmission ring 9. A second waist-shaped hole 13 is provided on the transmission ring 9. The length direction of the second waist-shaped hole 13 is arranged along the radial direction of the transmission ring 9. The width of the second waist-shaped hole 13 matches the drive shaft 12. Therefore, the drive shaft 12 can be moved along the length of the second waist-shaped hole 13. The transmission ring 9 is coaxially sleeved on the outside of the multiple eccentric shafts 3 and can rotate with its own axis as the rotation center under the support of the multiple eccentric shafts 3. When the telescopic mechanism drives the drive shaft 12 to move in a direction perpendicular to the axis of the transmission ring 9, the drive shaft 12 can move along the length direction of the second waist-shaped hole 13 while providing the thrust required for rotation to the transmission ring 9 through the inner wall of the second waist-shaped hole 13, thereby driving the transmission ring 9 to rotate.

[0049] In this embodiment, the telescopic mechanism includes but is not limited to a hydraulic / pneumatic telescopic cylinder, a screw-nut mechanism, and an electric push rod 22 .

[0050] In this embodiment, the first driving mechanism includes multiple push-pull mechanisms, the number of which matches the number of extrusion blocks 1. The push-pull mechanism is arranged on the side of the extrusion block 1 away from the placement area. The output shaft of the push-pull mechanism is connected to the extrusion block 1. The movement direction of the output shaft of the push-pull mechanism is parallel to the radial direction of the placement area. Multiple push-pull mechanisms are controlled by the same control system to ensure that multiple extrusion blocks 1 can move synchronously.

[0051] In this embodiment, the push-pull mechanism includes but is not limited to a hydraulic / pneumatic telescopic cylinder, a screw-nut mechanism, and an electric push rod 22 .

[0052] In this embodiment, the firecracker tube compression device also includes a first pushing device 14, which is arranged on one side of the placement area along the axial direction of the placement area. The output shaft of the first pushing device 14 is arranged corresponding to the firecracker tube 2, and the extension direction of the output shaft of the first pushing device 14 is parallel to the axis of the placement area. The extension of the output shaft of the first pushing device 14 can provide thrust for the firecracker tube 2. As the first pushing device 14 continues to extend, the firecracker tube 2 can be gradually pushed out of the placement area to facilitate the subsequent bundling process.

[0053] In this embodiment, a pushing plate 27 is provided on the output shaft of the first pushing device 14. The shape of the pushing plate 27 matches the shape of the firecracker tube 2 after contraction, and the size of the pushing plate 27 is less than or equal to the cross-sectional size of the firecracker tube 2 after contraction. The output shaft of the first pushing device 14 is extended, driving the pushing plate 27 to gradually approach and abut against the end of the firecracker tube 2. The pushing plate 27 can enter the placement space along the axial direction of the placement space, and then gradually push out the firecracker tube 2 in the placement space. The setting of the pushing plate 27 ensures that the multiple independent paper tubes that make up the firecracker tube 2 can move outward synchronously.

[0054] In this embodiment, the first pushing device 14 includes but is not limited to a hydraulic / pneumatic telescopic cylinder, a screw-nut mechanism, and an electric push rod 22 .

[0055] This embodiment also discloses a firecracker tube bundling device, including the above-mentioned firecracker tube compression device, a supporting device and a second pushing device. The supporting device is arranged on one side of the placement area along the axial direction of the placement area. The supporting device includes multiple support columns 15. The support columns 15 are used to support the bundling belt 16. The bundling belt 16 is coaxially arranged with the firecracker tube 2. The second pushing device is used to push the bundling belt 16 on the support column 15 toward the firecracker tube compression device. Its working principle is as follows: the firecracker tube compression device radially compresses the firecracker tube 2 through the squeezing block 1, the support device supports the strapping 16 at one end of the placement area through the support column 15, and the second pushing device can push the strapping 16 down the support column 15 along the axial direction of the placement area. At this time, the interior of the part of the strapping 16 extending out of the support column 15 can be used to accommodate the firecracker tube 2. The strapping 16 and the firecracker tube 2 are arranged coaxially. The firecracker tube compression device can push the compressed firecracker tube 2 into the strapping 16 through the first pushing device 14. The part of the firecracker tube 2 pushed out of the placement area loses the squeezing of the squeezing block 1 and can gradually recover its deformation. The strapping 16 can tighten the firecracker tube 2, thereby achieving a tight bundling of the firecracker tube 2. It can be understood that along the axial direction of the placement area, the projection of the firecracker tube 2 after radial contraction is located within the projection of the strapping 16.

[0056] In this embodiment, the radial cross section of the firecracker tube 2 is a regular hexagon, and there are six support columns 15 , which are evenly distributed along a circular trajectory and can support the annular strapping belt 16 into a shape with a regular hexagonal radial cross section.

[0057] In this embodiment, the size of the strapping band 16 is larger than the size of the firecracker tube 2 after radial contraction, and smaller than or equal to the size of the firecracker tube 2 in its natural state. It can be understood that the size of the strapping band 16 is larger than the size of the firecracker tube 2 after radial contraction, which means that the firecracker tube 2 can directly enter the annular strapping band 16 along the axial direction of the placement area.

[0058] In this embodiment, the support device also includes a support seat 17 and a sliding block 18. The sliding block 18 is slidably connected to the support seat 17. A support column 15 is installed on any sliding block 18. The support device also includes a second driving mechanism. The second driving mechanism includes a driving wheel 19. The driving wheel 19 is provided with a plurality of arc-shaped protrusions 20 at circumferential intervals. The inner arc surface of the arc-shaped protrusion 20 is connected to the outer peripheral surface of the driving wheel 19. The driving wheel 19 is rotatably provided on the support seat 17. A plurality of sliding blocks 18 are arranged around the outer side of the driving wheel 19. A rotating wheel 21 is provided at one end of the sliding block 18 close to the driving wheel 19. The axis of the rotating wheel 21 is aligned with the axis of the driving wheel 19. The lines are arranged parallel, and the rotating wheel 21 abuts against the outer arc surface of the driving wheel 19; when working, the strapping belt 16 is put on the outside of the multiple support columns 15 by other equipment or manually, and the position where the outer arc surface of the arc-shaped protrusion 20 intersects with the outer arc surface of the driving wheel 19 is smoothly set, and the driving wheel 19 is connected to the motor transmission. As the driving wheel 19 rotates, the rotating wheel 21 can gradually roll from the driving wheel 19 to the outer arc surface to the outer arc surface of the arc protrusion 20. The rolling wheel is installed on the sliding block 18, which can push the sliding block 18 to move in the direction away from the axis of the driving wheel 19, so that the support column 15 can move outward synchronously to prop up the strapping belt 16 to the desired shape.

[0059] In this embodiment, the motor is installed at the end of the support base 17 away from the placement area, and the output shaft of the motor passes through the support base 17 and extends to the end of the support base 17 close to the placement area, thereby preventing the motor from affecting the bundling of the firecracker tubes 2.

[0060] In this embodiment, the arc-shaped protrusion 20 includes an ascending section and a descending section. Along the circumference of the driving wheel 19, the distance between the portion of the outer arc surface of the arc-shaped protrusion 20 located in the ascending section and the axis of the driving wheel 19 becomes larger and larger, while the distance between the portion of the outer arc surface of the arc-shaped protrusion 20 located in the descending section and the axis of the driving wheel 19 becomes smaller and smaller.

[0061] In this embodiment, a sliding seat 28 is provided on the side of the support seat 17 close to the firecracker tube compression device, and a first slide groove 30 is provided on both sides of the sliding seat 28. A mounting groove 29 for accommodating the sliding seat 28 is provided on the sliding block 18, and a second slide groove 31 corresponding to the first slide groove 30 is provided on the two side walls of the mounting groove 29. A connecting piece is slidably installed between the second slide groove 31 and the first slide groove 30, and the two parts of the connecting piece extend into the first slide groove 30 and the second slide groove 31 respectively, thereby realizing the sliding connection between the sliding seat 28 and the sliding block 18.

[0062] In this embodiment, the connecting member can be any one of a ball, a connecting rod, and a double-rod slide rail.

[0063] In this embodiment, a reset mechanism is also provided on the support seat 17, which is used to provide the sliding block 18 with a force pointing to the axis of the support seat 17, so that when the arc-shaped protrusion 20 rotates from the ascending section corresponding to the rotating wheel 21 to the descending section corresponding to the rotating wheel 21, the sliding block 18 can move toward the axis of the support seat 17.

[0064] In this embodiment, the reset mechanism is a tension spring or compression spring that can provide the sliding block 18 with a force pointing in the axial direction of the support seat 17. Its specific setting position can be set arbitrarily according to actual needs, as long as it can provide the sliding block 18 with a force pointing in the axial direction of the support seat 17.

[0065] In this embodiment, the reset mechanism is a tension spring provided between the axis of the sliding block 18 and the support seat 17 or a compression spring provided between the sliding block 18 and the outer edge of the support seat 17 .

[0066] In this embodiment, the second pushing device includes a push rod 22 and a two-axis motion mechanism. The end of the push rod 22 is used to abut against the end of the strapping 16 on the support column 15. The push rod 22 is installed on the output shaft of the two-axis motion mechanism. The output shaft of the two-axis motion mechanism can move axially and radially along the placement area. The output shaft of the two-axis motion mechanism can move axially and radially along the placement area. The two-axis motion mechanism drives the push rod 22 to move radially along the placement area to adjust the relative position of the push rod 22 and the strapping 16 to ensure that the push rod 22 can correspond to the end of the strapping 16, and thus can adapt to strapping 16 of different sizes. When the two-axis motion mechanism drives the push rod 22 to move axially along the placement area, the push rod 22 can push the strapping 16 to move in the direction close to the placement area.

[0067] In this embodiment, the two-axis motion mechanism includes a first telescopic component 32 and a second telescopic component 33. The first telescopic component 32 is slidably installed on the side of the support seat 17 away from the placement area. The sliding direction of the first telescopic component 32 is set along the radial direction of the support seat 17. The output shaft of the first telescopic component 32 extends to the radial outside of the support seat 17. The output shaft of the first telescopic component 32 is connected to the push rod 22. The output shaft of the first telescopic component 32 can move along the axis of the placement area. The output shaft of the second telescopic component 33 is connected to the first telescopic component 32. The output shaft of the second telescopic component 33 can be telescoped along the radial direction of the support seat 17. The second telescopic component 33 can drive the first telescopic component 32 to move radially along the support seat 17 to realize radial adjustment of the position of the push rod 22.

[0068] In this embodiment, the number of the first telescopic assemblies 32 matches the number of the second telescopic assemblies 33 .

[0069] In this embodiment, the number of second telescopic components 33 is half the number of first telescopic components 32. The second telescopic components 33 are arranged between the two first telescopic components 32. A telescopic rod 34 is installed on the output shaft of the second telescopic component 33. The telescopic rod 34 is perpendicular to the output shaft of the second telescopic component 33. The two ends of the telescopic rod 34 are respectively rotatably connected to the first telescopic components 32 on both sides. The rotation axis of the connection position between the end of the telescopic rod 34 and the first telescopic component 32 is parallel to the axis of the support seat 17. Both ends of the telescopic rod 34 can be retracted in the direction close to the output shaft of the second telescopic component 33 or extended in the direction away from the output shaft of the second telescopic component 33. When the output shaft of the second telescopic component 33 moves away from the axis of the support seat 17, the telescopic rod 34 gradually moves in the direction away from the axis of the support seat 17. During this process, the two ends of the telescopic rod 34 will gradually extend outward to adapt to the change in the position of the rotational connection between the telescopic rod 34 and the first telescopic component 32, so that the movement of the two first telescopic components 32 can be controlled by one second telescopic component 33.

[0070] In this embodiment, the first telescopic assembly 32 and the second telescopic assembly 33 both include but are not limited to a hydraulic / pneumatic telescopic cylinder, a screw-nut mechanism, and an electric push rod 22 .

[0071] In this embodiment, the firecracker tube bundling device also includes a telescopic device 23, the output shaft of the telescopic device 23 is parallel to the axis of the firecracker tube 2, and the supporting device is installed on the output shaft of the telescopic device 23. The position of the supporting device can be adjusted through the telescopic device 23, so that the supporting device can approach or move away from the placement area along the axial direction of the placement area to deliver the bundling belt 16 to one side of the placement area.

[0072] In this embodiment, the telescopic device 23 includes a motor, which is mounted on a support plate 36. The support plate 36 is arranged on the side of the support seat 17 away from the placement area. The support plate 36 is connected to the base 37. The output shaft of the motor extends through the support plate 36 in a direction away from the placement area. A threaded rod is installed on the output shaft of the motor. A drive plate 38 is installed at the end of the threaded rod. The drive plate 38 is threadedly engaged with the threaded rod. A drive rod 39 is provided on the end surface of the drive plate 38 close to the placement area. The drive rod 39 extends through the support plate 36 in the direction of the placement area. The drive rod 39 slides with the support plate 36. The end of the drive rod 39 away from the drive plate 38 is connected to the support seat 17. When the motor rotates, the threaded rod drives the drive plate 38 to move in a direction close to or away from the placement area through rotation. The drive plate 38 can drive the support seat 17 to move in a direction close to or away from the placement area through the drive rod 39.

[0073] In this embodiment, the firecracker tube bundling device further includes a lifting device 35 , which is mounted on a base 37 . A support plate 36 is connected to an output shaft of the lifting device 35 , and the height of the support device can be adjusted through the lifting device 35 .

[0074] In this embodiment, the specific configuration of the lifting device 35 is the same as that of the telescopic device 23, and both are driven by a screw mechanism, which will not be described in detail here.

[0075] In this embodiment, the firecracker tube bundling device also includes a heating device 24. Along the radial direction of the placement area, the heating head of the heating device 24 is arranged on the outside of the support column 15. The heating head is used to heat the part of the bundling belt 16 that bypasses the support column 15. The bundling belt 16 is thermoplastic. After being heated by the heating device 24, the bundling belt 16 can maintain its shape after being supported by the support column 15, so that the bundling belt 16 can match the circumferential contour of the firecracker tube 2, thereby preventing the bundling belt 16 from deforming the firecracker tube 2.

[0076] In this embodiment, the heating device 24 is connected to the base 37 via a bracket.

[0077] In this embodiment, the heating device 24 includes a telescopic structure, the telescopic direction of the telescopic structure is perpendicular to the axis of the placement area, and the heating head is arranged at the end of the telescopic structure. The telescopic structure can drive the heating head to move toward or away from the axis of the placement area to adapt to strapping straps 16 of different sizes.

[0078] In this embodiment, the telescopic structure includes but is not limited to a hydraulic / pneumatic telescopic cylinder, a screw-nut mechanism, and an electric push rod 22 .

[0079] In this embodiment, the firecracker tube bundling device also includes a sliding baffle 25, which is slidably arranged on one side of the firecracker tube compression device close to the supporting device. The sliding baffle 25 is spaced apart from the extrusion block 1, and the sliding baffle 25 can slide radially along the placement area. Its working principle is: first, the firecracker tubes 2 stacked in a hexagon are squeezed by the extrusion block 1 to cause the firecracker tubes 2 to produce radial contraction. After the support rod props up the strapping 16, the second pushing device can push the strapping 16 outward so that the end of the strapping 16 close to the placement area is extended from the support column 15. Under the action of the telescopic device 23, the support rod drives the strapping 16 to gradually move to one side of the extrusion block 1. At this time, the size of the compressed firecracker tube 2 is smaller than the size of the strapping 16, and the projection of the firecracker tube 2 along the axial direction of the placement area is Located within the projection of the strapping belt 16, the compressed firecracker tube 2 can be pushed out of the placement area through the first pushing device 14, and then enter the strapping belt 16. After the second pushing device pushes the strapping belt 16 completely down from the support column 15, the strapping belt 16 is located between the sliding baffle 25 and the extrusion block 1, and the sliding baffle 25 moves in the direction close to the axis of the placement area, thereby being able to block the strapping belt 16. At this time, along the radial direction of the placement area, the end of the sliding baffle 25 is located on the outside of the firecracker tube 2, and the first pushing device 14 continues to push the compressed firecracker tube 2 outward. Under the action of the sliding baffle 25, the strapping belt 16 will not move in the direction away from the placement area, thereby enabling the strapping belt 16 to reach the preset position, and will not be pushed away by the firecracker tube 2 that gradually recovers its deformation through friction.

[0080] In this embodiment, the strapping tape 16 is a PP tape.

[0081] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A firecracker tube compression device, characterized in that: include: An extrusion block (1), wherein a plurality of the extrusion blocks (1) are provided, the plurality of the extrusion blocks (1) are arranged in a circular track, a placement area for accommodating a firecracker tube (2) is provided between the plurality of the extrusion blocks (1), and the axis of the firecracker tube (2) is parallel to the axis of the placement area; and a first driving mechanism, wherein the plurality of extrusion blocks (1) are all connected to the first driving mechanism, and the first driving mechanism can drive the plurality of extrusion blocks (1) to move synchronously along the radial direction of the placement area, and the extrusion blocks (1) can cause the firecracker tube (2) to contract radially.

2. The firecracker tube compression device according to claim 1, characterized in that: The first driving mechanism includes an eccentric shaft (3) and a first power source (4), the eccentric shaft (3) is in transmission connection with the first power source (4), the first power source (4) is used to drive the eccentric shaft (3) to rotate, any one of the extrusion blocks (1) is provided with a special-shaped hole (5), the axis of the special-shaped hole (5) is parallel to the axis of the placement area, the first end of the eccentric shaft (3) extends into the special-shaped hole (5), and the eccentric shaft (3) can push the extrusion block (1) to move toward or away from the firecracker tube (2) through the special-shaped hole (5); Preferably, the invention further comprises a support frame (6), a limiting column (7) is provided on the support frame (6), a first waist-shaped hole (8) is also provided on the extrusion block (1), the axis of the first waist-shaped hole (8) is parallel to the axis of the special-shaped hole (5), the extrusion block (1) is slidably mounted on the support frame (6) through the first waist-shaped hole (8), the length direction of the first waist-shaped hole (8) is parallel to the moving direction of the extrusion block (1), and the width of the first waist-shaped hole (8) matches the size of the limiting column (7).

3. The firecracker tube compression device according to claim 2, characterized in that: The first driving mechanism further includes a transmission ring (9), which is transmission-connected to the first power source (4), and a first tooth (10) is provided on the inner wall of the transmission ring (9). The second end of the eccentric shaft (3) extends into the transmission ring (9), and a second tooth (11) is provided on the outer wall of the second end of the eccentric shaft (3). The first tooth (10) is meshed with the second tooth (11), and the first power source (4) can drive the transmission ring (9) to rotate.

4. The firecracker tube compression device according to claim 3, characterized in that: The first power source (4) is a telescopic mechanism, which is arranged on one side of the transmission ring (9) along the radial direction of the transmission ring (9), and the telescopic direction of the output shaft of the telescopic mechanism is perpendicular to the axis of the transmission ring (9). A driving shaft (12) is arranged on the output shaft of the telescopic mechanism, and the axis of the driving shaft (12) is parallel to the axis of the transmission ring (9). A second waist-shaped hole (13) is arranged on the transmission ring (9), and the length direction of the second waist-shaped hole (13) is arranged along the radial direction of the transmission ring (9), and the width of the second waist-shaped hole (13) matches the driving shaft (12).

5. The firecracker tube compression device according to claim 1, characterized in that: The firecracker tube (2) is provided with a first pushing device (14), the first pushing device (14) being arranged on one side of the placement area along the axial direction of the placement area, the output shaft of the first pushing device (14) being arranged corresponding to the firecracker tube (2), and the telescopic direction of the output shaft of the first pushing device (14) being parallel to the axis of the placement area.

6. A firecracker tube bundling device, characterized in that: include: The firecracker tube compression device according to any one of claims 1 to 5; A supporting device, the supporting device is arranged on one side of the placement area along the axial direction of the placement area, the supporting device includes a plurality of supporting columns (15), the supporting columns (15) are used to support a strapping belt (16), and the strapping belt (16) is coaxially arranged with the firecracker tube (2); and a second pushing device, wherein the second pushing device is used to push the binding belt (16) on the supporting column (15) toward the firecracker tube compression device.

7. The firecracker tube bundling device according to claim 6, characterized in that: The support device further comprises a support seat (17) and a sliding block (18), wherein the sliding block (18) is slidably connected to the support seat (17), and one of the supporting columns (15) is mounted on any one of the sliding blocks (18). The support device further comprises a second driving mechanism, wherein the second driving mechanism comprises a driving wheel (19), wherein the driving wheel (19) is provided with a plurality of arc-shaped protrusions (20) at circumferential intervals, wherein the inner arc surface of the arc-shaped protrusions (20) is connected to the outer circumferential surface of the driving wheel (19), and the driving wheel (19) is rotatably arranged on the support seat (17), and a plurality of the sliding blocks (18) are arranged around the outer side of the driving wheel (19), and a rotating wheel (21) is provided at one end of the sliding block (18) close to the driving wheel (19), wherein the axis of the rotating wheel (21) is arranged parallel to the axis of the driving wheel (19), and the rotating wheel (21) abuts against the outer arc surface of the driving wheel (19).

8. The firecracker tube bundling device according to claim 7, characterized in that: The second pushing device includes a push rod (22) and a two-axis motion mechanism, wherein the end of the push rod (22) is used to abut against the end of the strapping belt (16) on the support column (15), and the push rod (22) is installed on the output shaft of the two-axis motion mechanism, and the output shaft of the two-axis motion mechanism can move axially and radially along the placement area.

9. The firecracker tube bundling device according to claim 6, characterized in that: It also includes a telescopic device (23), the output shaft of the telescopic device (23) is parallel to the axis of the firecracker tube (2), and the supporting device is installed on the output shaft of the telescopic device (23); and a heating device (24), wherein a heating head of the heating device (24) is arranged on the outside of the support column (15) along the radial direction of the placement area, and the heating head is used to heat the portion of the strapping belt (16) that passes around the support column (15), and the strapping belt (16) has thermoplasticity.

10. The firecracker tube bundling device according to claim 6, characterized in that: It also includes a sliding baffle (25), which is slidably arranged on a side of the firecracker tube compression device close to the supporting device. The sliding baffle (25) is spaced apart from the extrusion block (1), and the sliding baffle (25) can slide along the radial direction of the placement area.

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