A method for detecting paper tube firework blocks

Abstract

This invention discloses a method for detecting paper tube fireworks, including shaping the paper tube fireworks, first photographic detection, and deformation of the outer perimeter. The deformation component squeezes or stretches the outer perimeter, causing the fuses inside the fireworks tube to move. A second photographic detection is then performed, followed by comprehensive data analysis. First, the paper tube fireworks, just assembled mechanically, are shaped to ensure a regular shape and accurate arrangement of all paper tubes during photographing. This allows for accurate capture of the fuses inside each individual tube, avoiding interference between tubes and significantly reducing the amount of data processing required. Second, after the first photograph, the outer perimeter is deformed, and a second photograph is taken. This deformation causes a slight shift in the two fuses inside each tube, and a second photograph is taken, causing misalignment of overlapping fuses and reducing the false positive rate.

Description

Technical Field

[0001] This invention relates to the field of paper tube fireworks testing technology, and in particular to a method for testing paper tube fireworks pellets. Background Technology

[0002] Fireworks, as a form of entertainment that produces sound, light, and color, are widely used in grand ceremonies and performances. With the continuous improvement of people's living standards, the use of combination fireworks has also entered countless households. In the production process of combination fireworks, all procedures are operated and inspected manually. However, with increasing emphasis on production safety and improved production efficiency, current combination fireworks production has generally achieved semi-automated assembly line production. Production and inspection of combination fireworks are carried out through a combination of human and machine methods. This not only improves production efficiency but also reduces production costs for fireworks manufacturers, while simultaneously ensuring the safety of combination fireworks production.

[0003] Traditional inspection methods for paper tube fireworks involve manual visual inspection. This involves checking the integrity of the paper tube shape and the quality of the fuse (including the number, length, and any faulty fuses) to identify defects in the fuse and paper tube shape. Defects in fuse quality (including the number, length, and faulty fuses) prevent the fireworks from igniting properly. Changes in the paper tube shape, such as dents or deformation, affect subsequent automated production, for example, preventing proper paper pressing or proper placement of the inner tube. When visually inspecting the fuse, due to the small inner diameter and depth of a single paper tube, with the fuse located at the bottom, external lighting is required, and the eye must be highly focused on the observation point. During production, prolonged and intense visual observation easily leads to eye fatigue, causing defects in the integrity of the paper tube shape and the quality of the fuse (including the number, length, and faulty fuses) to go undetected, resulting in significant quality defects in the paper tube fireworks.

[0004] The impact of traditional operating methods:

[0005] 1. Manual operation requires continuous visual inspection, which can easily lead to visual fatigue;

[0006] 2. Negligence by production personnel can easily lead to batch quality accidents;

[0007] 3. Unshaped fireworks have irregular shapes, which affects the product's shape and quality. Summary of the Invention

[0008] To address the problems in the prior art, this invention provides a method for detecting paper tube fireworks.

[0009] The technical solution of this invention is: a method for detecting paper tube fireworks, comprising the following steps:

[0010] Step 1: Shaping the paper tube fireworks; Use shaping equipment to shape the paper tube fireworks to ensure that the cross-sectional shape of the paper tube fireworks is regular and the position of all paper tubes is accurate;

[0011] Step 2, First photo inspection; The photo inspection equipment takes photos of the inside of all the single tubes of the shaped paper tube fireworks and records them as the first set of data;

[0012] Step 3, Deformation of the outer enclosure; The outer enclosure is squeezed or stretched by the deformation component, causing the fuse inside the firework tube to move;

[0013] Step 4, Second photo inspection; The photo inspection equipment takes photos of the inside of all the single tubes of the deformed paper tube firework and records them as the second set of data;

[0014] Step 5: Data integration and judgment; the background system judges whether the paper tube fireworks are qualified products by comparing the first set of data with the second set of data.

[0015] As a further improvement to the above technical solution:

[0016] Preferably, the judgment of the two sets of data in step 5 mainly includes the lead length, the number of leads, the faulty lead, and the shape of the paper tube firework.

[0017] Preferably, step 5 further includes determining the lead length and the number of leads, the main basis for which is:

[0018] Step 51: If both sets of data show insufficient lead length or missing lead, the paper tube firework is determined to be a defective product.

[0019] Step 52: If at least one set of leads is qualified, the paper tube firework is judged to be a qualified product.

[0020] Preferably, the shaping device includes a shaping worktable, a limiting plate disposed on the front side of the shaping worktable, a pushing mechanism disposed on the rear side of the shaping worktable, a baffle assembly disposed on the right side of the shaping worktable, and a firework slug shaping and pushing assembly disposed on the left side of the shaping worktable.

[0021] Preferably, the baffle assembly includes a workbench gantry mounted on the right side of the shaping workbench, a cylinder fixing block fixedly mounted on the upper surface of the workbench gantry, a baffle cylinder mounted on the upper end of the cylinder fixing block, and a limiting baffle fixedly mounted below the output shaft of the baffle cylinder and slidably mounted through the upper surface of the workbench gantry. The workbench gantry is hollow in the middle, and the length and width of the workbench gantry are greater than the length and width of the paper tube firework sphere.

[0022] Preferably, the fireworks shaping and pushing assembly includes a shaping fixing block fixedly disposed on the left side of the shaping workbench, a shaping cylinder horizontally disposed on the upper end of the shaping fixing block, and a shaping baffle disposed at the front end of the shaping cylinder.

[0023] Preferably, the pushing mechanism includes a paper tube firework ball placement platform located behind the shaping worktable for placing paper tube firework balls. The lower part of the paper tube firework ball placement platform is connected to a lifting cylinder. The lifting cylinder is mounted on a support block, which is fixedly connected to the lower part of the shaping worktable. A pushing cylinder is mounted on the support block, located on the side of the shaping worktable away from the paper tube firework ball placement platform. A pushing plate is mounted at the front end of the pushing cylinder.

[0024] Preferably, the photographic detection device includes an imaging unit, a main system, and a motion module. The imaging unit is equipped with a wide-angle lens and a non-wide-angle lens, taking two photos of each paper tube. The wide-angle lens camera takes a photo of the complete paper tube to detect the quality of the paper tube wall and opening, while the non-wide-angle lens camera takes a photo of the bottom of the paper tube to detect the number and length of the leads. The main system controls the motion module to move and simultaneously controls the imaging unit to take photos.

[0025] Preferably, the deformation assembly includes a first lead-wire cylinder disposed on the left and right sides of the shaping device, and a lead-wire pressing plate disposed on the first lead-wire cylinder. The two lead-wire pressing plates are disposed opposite each other and correspond to the lead-wire position of the paper tube firework. The end face of the lead-wire pressing plate is in a continuous U-shape, and the protrusion of the lead-wire pressing plate is in an arc shape and corresponds to the gap between adjacent single tubes of the paper tube firework.

[0026] Preferably, the deformation assembly includes a second lead-wire cylinder disposed on the left and right sides of the shaping device, and a lead-wire shaping frame disposed on the second lead-wire cylinder. The lead-wire shaping frame includes a tension main rod connected to the second lead-wire cylinder and a plurality of pull rods disposed at equal intervals on the tension main rod. The gap between the pull rods and the adjacent single tubes of the paper tube firework spheres corresponds to the gap between the pull rods and the paper tube firework spheres. The two lead-wire shaping frames are mirror images disposed on both sides of the shaping device.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] Compared with existing technologies, the solution provided by this invention first reshapes the paper tube fireworks bundles that have just been mechanically assembled, ensuring that the shape is regular and the arrangement of all paper tubes is accurate during the photography process. This allows for accurate capture of the internal fuse of each individual tube during single-tube photography, avoiding interference between individual tubes. Compared to parallelogram-shaped or square fireworks bundles, the amount of data processing required for the backend is significantly reduced. Secondly, after the first photograph, the outer fuse is deformed before a second photograph is taken. In existing shooting and inspection processes, most rely on single-shot testing. While single-shot testing can detect whether the fuse length, number of fuses, misaligned fuses, and the shape of the firework tube meet the standards, it can also lead to issues where missing fuses are discovered after shooting. Some of these cases are indeed due to missing fuses, but others are caused by two fuses overlapping, resulting in the image only showing one fuse and being mistakenly judged as missing. By deforming the outer fuse enclosure to slightly shift the two fuses inside the tube, and then shooting again, the overlapping fuses can be misaligned, thus reducing the false positive rate.

[0029] Meanwhile, this invention designs dedicated equipment for the process, enabling simultaneous shaping and inspection. It is easy to operate, highly reliable, and greatly reduces the labor intensity of production personnel, as well as the labor and material costs of manual shaping. It also avoids quality problems caused by human negligence, ensuring both production quality and improving production efficiency. This allows production personnel to rationally arrange their work time, saving consumables to a certain extent and avoiding unnecessary waste. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the detection method of the present invention;

[0032] Figure 2 This is a three-dimensional structural diagram of the shaping and detection part of the present invention;

[0033] Figure 3 This is a three-dimensional structural diagram of the pushing part of the present invention;

[0034] Figure 4 This is a three-dimensional structural diagram of the selection portion of the present invention;

[0035] Figure 5This is a schematic diagram of the overall top view structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the deformable component structure in Embodiment 2 of the present invention;

[0037] Figure 7 This is a schematic diagram of the internal lead wire of the paper tube firework pellet of the present invention.

[0038] Attached reference numerals: 1. Shaping workbench; 2. Limiting plate; 3. Workbench gantry; 4. Cylinder fixing block; 5. Baffle cylinder; 6. Limiting baffle; 7. Shaping fixing block; 8. Shaping cylinder; 9. Shaping baffle; 10. Paper tube firework ball placement platform; 11. Lifting cylinder; 12. Support block; 13. Pushing cylinder; 14. Pushing plate; 15. Photographing and inspection equipment; 16. First lead wire cylinder; 17. Lead wire extrusion plate; 18. Second lead wire cylinder; 19. Lead wire shaping frame; 20. Temporary storage platform for defective products; 21. Storage platform for qualified products; 22. Selection cylinder. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "front," "rear," "left," "right," "up," and "down," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. The technical solutions of the various embodiments in this invention can be combined, and the technical features in the embodiments can also be combined to form new technical solutions.

[0041] This invention provides the following technical solution:

[0042] Example 1

[0043] As attached Figure 1 The diagram shown is a flowchart of the detection method of the present invention, which includes the following:

[0044] 1. Paper tube firework shaping: The paper tube firework is shaped using shaping equipment to ensure that the cross-sectional shape of the paper tube firework is regular and the arrangement of all paper tubes is accurate. This is mainly to ensure that the fuse inside the corresponding single tube can be accurately photographed during the subsequent photo inspection process, avoiding the influence between single tubes. Compared with irregularly shaped firework and square firework, the amount of data processing required for the back-end is greatly reduced.

[0045] 2. First photo inspection: The photo inspection device 15 takes photos of the inside of all the single tubes of the shaped paper tube firework and records them as the first set of data. This is the conventional photo inspection method, which can detect whether the fuse length, number of fuses, broken fuses, and the shape of the firework tube meet the standards.

[0046] 3. Enclosure Deformation: The outer enclosure is squeezed or stretched by the deformation component, causing the fuse inside the firework tube to move. This step is to shift the overlapping fuses of the single tube inside the firework tube, making the shooting results more accurate.

[0047] 4. Second photo inspection: The photo inspection device 15 takes photos of the inside of all the single tubes of the deformed paper tube firework and records them as the second set of data. At this time, it takes photos again to check for omissions caused by the overlapping fuses. At the same time, the double photo inspection is verified to avoid the misjudgment of the single photo inspection. The fuse length, fuse quantity, broken fuses and the shape of the firework tube are also verified twice, which improves the accuracy of the verification.

[0048] 5. Comprehensive Data Judgment: The backend system judges whether the paper tube fireworks are qualified products by comparing the first and second sets of data. This mainly involves judging whether the fuse length is up to standard, whether the fuse is faulty, whether the shape of the paper tube fireworks is damaged or deformed, and finally whether the fuse is missing (fuse quantity and fuse length). The judgment of missing fuses is mainly based on comparing the two sets of data: if both sets of data show insufficient fuse length or missing fuses, the paper tube fireworks are judged as defective products; if at least one set of fuses is qualified, the paper tube fireworks are judged as qualified products.

[0049] In the production process of combination fireworks, there is a step commonly known as "assembling the pot". The mechanized production equipment used is usually called "pot assembly machine" or "firework assembly machine" in the industry. First, multiple firework tubes are combined into rows, called tube rows. Holes are drilled in two adjacent firework tubes to insert a fuse. This fuse is called the connecting fuse. Then, the multiple rows of firework tubes with the connecting fuse are glued together into a block. Holes are drilled in two adjacent rows of firework tubes to insert a fuse. This fuse is called the surrounding fuse.

[0050] As attached Figure 7As shown, during mechanical assembly, when the connecting and surrounding leads are inserted, they are very likely to overlap due to their very similar insertion angles. Once the leads overlap, the machine vision cannot identify the length of the lead that is obscured below. However, by adding the deformation action of the surrounding leads, before and after the deformation, one of the two leads inside the cylinder that might overlap will not overlap. Therefore, visual recognition of the two photos can avoid misjudgment caused by lead overlap.

[0051] The data recorded for the current single-shot results is as follows:

[0052] 1. Total production: 676, 164 detected, detection rate: 24.3%; among them, 65 were judged as defective due to incorrect position, accounting for 9.6%; 53 were misjudged due to lead overlap, misjudged rate: 7.84%; the total of the two items is 118, misjudged rate: 17.4%.

[0053] 2. Total production: 650, 133 detected, detection rate: 20.4%; among them, 44 were judged as defective due to incorrect position, accounting for 6.7%; 29 were misjudged due to lead wire overlap, misjudgment rate: 4.46%; the total of the two items is 73, misjudgment rate: 11.2%.

[0054] 3. Total number of workpieces: 657, 125 were detected, detection rate: 19%. Among them, 22 were deemed unqualified due to incorrect placement, accounting for 3.3%; 33 were misjudged due to overlapping leads, misjudged rate: 5.02%, totaling 55, with a misjudgment rate of 8.3%.

[0055] By adopting the process method of this patent, misjudgment caused by incorrect positioning is avoided and misjudgment caused by lead overlap is reduced. At the same time, three sets of data were statistically analyzed, and the misjudgment rates were 0.6%, 0.5%, and 0.3% respectively. It can be seen that the misjudgment rate has been greatly reduced.

[0056] Example 2

[0057] As attached Figure 2 To be continued Figure 5 As shown, the shaping device for the detection method in Example 1 is as follows:

[0058] Shaping workbench 1 for shaping and inspecting paper tube fireworks;

[0059] A limit plate 2 is provided on the front side of the shaping workbench 1, and a photographic inspection device 15 is also provided. A pushing mechanism is provided at the rear end of the shaping workbench 1 for pushing paper tube fireworks. Specifically, a paper tube fireworks placement platform 10 is provided on the rear side of the shaping workbench 1 for placing paper tube fireworks. The lower part of the paper tube fireworks placement platform 10 is connected to a lifting cylinder 11. The lifting cylinder 11 is provided on a support block 12. The support block 12 is fixedly connected to the lower part of the shaping workbench 1. A pushing cylinder 13 is provided on the support block 12. The pushing cylinder 13 is located on the side of the shaping workbench 1 away from the paper tube fireworks placement platform 10. A pushing plate 14 is provided at the front end of the pushing cylinder 13.

[0060] The working process is as follows: the firework pellets are placed on the paper tube firework pellet placement platform 10 through the corresponding equipment, and are level with or slightly higher than the shaping worktable 1 under the adjustment of the lifting cylinder 11. Then, under the action of the pushing cylinder 13 and the pushing plate 14, the firework pellets are pushed onto the shaping worktable 1, and are limited by the action of the limiting plate 2. Thus, the front and rear sides of the paper tube firework pellets are limited, and the conveying is completed.

[0061] On the right side of the shaping workbench 1 is a lifting baffle assembly, specifically consisting of a workbench gantry 3 on the right side of the shaping workbench 1, a cylinder fixing block 4 fixedly mounted on the upper surface of the workbench gantry 3, a baffle cylinder 5 mounted on the upper end of the cylinder fixing block 4, and a limiting baffle 6 fixedly mounted below the output shaft of the baffle cylinder 5 and slidingly mounted on the upper surface of the workbench gantry 3. The workbench gantry 3 is hollow in the middle, and its length and width are greater than those of the paper tube firework ball.

[0062] On the left side of the shaping workbench 1 is the firework shaping and pushing assembly, specifically a shaping fixing block 7 fixedly set on the left side of the shaping workbench 1, a shaping cylinder 8 horizontally set on the upper end of the shaping fixing block 7, and a shaping baffle 9 set at the front end of the shaping cylinder 8.

[0063] The working process is as follows: After the firework ball is pushed onto the shaping worktable 1 by the pushing mechanism, the limiting baffle 6 moves downward under the action of the baffle cylinder 5, thereby limiting the right side of the firework ball. Then the shaping cylinder 8 on the left side extends and pushes the firework ball on the shaping worktable 1. When the firework ball contacts the limiting baffle 6 on the right side, as the shaping cylinder 8 extends, the paper tube firework ball, which is not yet very sticky, can be limited from its original parallelogram shape to a square shape, thereby achieving the purpose of shaping. Thus, the photographic inspection device 15 can start its first operation.

[0064] The photographic detection device 15 includes an imaging unit, a main system, and a motion module. The imaging unit is equipped with a wide-angle lens and a non-wide-angle lens, taking two photos of each paper tube. The wide-angle lens camera takes a photo of the complete paper tube to detect the quality of the paper tube wall and opening, while the non-wide-angle lens camera takes a photo of the bottom of the paper tube to detect the number and length of the leads. The main system controls the motion module to move and simultaneously controls the imaging unit to take photos.

[0065] As can be seen from the attached diagram, a pressure regulating valve is installed on the shaping workbench 1 to adjust the pressure of the cylinder and prevent damage to the paper tube firework pellets.

[0066] At the same time, by the appendix Figure 6 It can be seen that a temporary storage platform 20 for defective products is provided on the other side of the limit baffle 6. A qualified product storage platform 21 is vertically provided on one side of the temporary storage platform 20 for defective products. A sorting cylinder 22 is provided on the other side of the temporary storage platform 20 for defective products. A sorting plate is provided at the front end of the sorting cylinder 22. The sorting cylinder 22 and the qualified product storage platform 21 are located on the same straight line.

[0067] The selection cylinder 22 can be connected to the photographic inspection device 15. Upon receiving a signal from the device, the cylinder 22 extends forward and pushes the qualified paper tube firework ball onto the qualified product storage table 21. This clearly shows which products require rework and are defective, reducing manual labor. Qualified products are then moved to the workshop storage point by operators, ready for the next process. Defective products are repaired by operators to correct any issues, and then placed in the workshop storage point after passing inspection.

[0068] Example 3

[0069] From the appendix Figure 2 As shown, this is one manifestation of the deformation component, which is extrusion deformation. The specific structure is as follows: a first lead-wire cylinder 16 is set on the left side of the forming worktable 1 and the limiting baffle 6, and a lead-wire extrusion plate 17 is set on the first lead-wire cylinder 16. The two lead-wire extrusion plates 17 are arranged opposite each other and correspond to the lead-wire position of the paper tube firework. The end face of the lead-wire extrusion plate 17 is in the shape of a continuous U-shape, and the protrusion of the lead-wire extrusion plate 17 is in the shape of an arc and corresponds to the gap between adjacent single tubes of the paper tube firework.

[0070] As can be seen from the attached drawings, in order to avoid interference, a long groove is provided on the limiting baffle 6 to facilitate the passage of the lead wire extrusion plate 17. At the same time, corresponding upper and lower through holes are provided on the upper end of the workbench frame 3 to facilitate the passage of the first lead wire cylinder 16.

[0071] The working process and principle are as follows: After the paper tube firework is limited, the first lead cylinder 16 drives the lead extrusion plate 17 to move forward, so that the protrusion of the lead extrusion plate 17 extrudes the surrounding lead between the two single tubes on the outside. In addition to the change in length within the launch hole, the surrounding lead will change its angle within the launch hole due to the lateral force perpendicular to the direction of the launch hole. Therefore, the originally overlapping leads within the launch hole are transformed into non-overlapping leads, which improves the accuracy of the lead detector when the surrounding leads overlap and greatly reduces the misjudgment of lead detection caused by lead overlap.

[0072] Example 4

[0073] As attached Figure 6 As shown, this is one manifestation of the deformation component, which is tensile deformation. The specific structure is as follows: a second lead-wire cylinder 18 is provided on the limiting baffle 6 and the shaping baffle 9. A lead-wire shaping frame 19 is provided on the second lead-wire cylinder 18. The lead-wire shaping frame 19 includes a tension main rod connected to the second lead-wire cylinder 18 and a number of pull rods equally spaced on the tension main rod. The gap between the pull rods and the adjacent single tubes of the paper tube firework ball corresponds to the gap between them. The two lead-wire shaping frames 19 are mirror images of each other on both sides of the shaping equipment.

[0074] Although not shown in the figure, considering the actual situation, similar to Embodiment 3, corresponding slots need to be opened in the workbench gantry 3, the limiting baffle 6 and the shaping baffle 9 to avoid interference.

[0075] The working process and principle are as follows: After the paper tube firework ball is limited, the second lead cylinder 18 drives the belt to move upward and pull the surrounding lead upward by about 5mm. When the surrounding lead is stretched, in addition to the change in length inside the launch hole, the surrounding lead will change its angle due to the lateral force perpendicular to the launch hole. Therefore, the overlapping leads inside the launch hole are changed to non-overlapping, which improves the accuracy of the lead detector when the surrounding lead overlaps and greatly reduces the misjudgment of the lead detection caused by lead overlap.

[0076] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for detecting paper tube fireworks, characterized in that, Includes the following steps: Step 1: Shaping the paper tube fireworks; The paper tube fireworks are shaped using shaping equipment to ensure a regular cross-sectional shape and accurate positioning of all paper tubes. Step 2, First photo inspection; The photo inspection device (15) takes photos of all the single tubes of the shaped paper tube fireworks and records them as the first set of data; Step 3, Deformation of the outer enclosure; The outer enclosure is squeezed or stretched by the deformation component, causing the fuse inside the firework tube to move; Step 4, Second photo inspection; The photo inspection equipment (15) takes photos of all the single tubes of the paper tube firework after the deformation and records them as the second set of data; Step 5: Data integration and judgment; the backend judges whether the paper tube fireworks are qualified products by comparing the first set of data with the second set of data. Multiple firework tubes are arranged in a row, called a tube row. Holes are drilled in two adjacent firework tubes to insert a ignition fuse, which is called a connecting fuse. Then, the multiple rows of firework tubes with the connecting fuse are glued together into a block, and holes are drilled in two adjacent rows of firework tubes to insert a ignition fuse, which is called a surrounding fuse.

2. The method for detecting paper tube fireworks as described in claim 1, characterized in that, The judgment of the two sets of data in step 5 mainly includes the lead length, the number of leads, the faulty lead, and the shape of the paper tube firework.

3. The method for detecting paper tube fireworks as described in claim 1, characterized in that, Step 5 also includes determining the lead length and the number of leads, the main basis for which is: Step 51: If both sets of data show insufficient lead length or missing lead, the paper tube firework is determined to be a defective product. Step 52: If at least one set of leads is qualified, the paper tube firework is judged to be a qualified product.

4. The method for detecting paper tube fireworks according to claim 1, characterized in that, The shaping equipment includes a shaping workbench (1), a limiting plate (2) disposed on the front side of the shaping workbench (1), a pushing mechanism disposed on the rear side of the shaping workbench (1), a baffle assembly disposed on the right side of the shaping workbench (1), and a firework slug shaping and pushing assembly disposed on the left side of the shaping workbench (1).

5. The method for detecting paper tube fireworks as described in claim 4, characterized in that, The baffle assembly includes a workbench gantry (3) set on the right side of the shaping workbench (1), a cylinder fixing block (4) fixedly set on the upper surface of the workbench gantry (3), a baffle cylinder (5) set on the upper end of the cylinder fixing block (4), and a limiting baffle (6) fixedly set below the output shaft of the baffle cylinder (5) and slidably set on the upper surface of the workbench gantry (3). The middle of the workbench gantry (3) is hollow, and the length and width of the workbench gantry (3) are greater than the length and width of the paper tube firework ball.

6. The method for detecting paper tube fireworks according to claim 4, characterized in that, The firework shaping and pushing assembly includes a shaping fixing block (7) fixedly installed on the left side of the shaping workbench (1), a shaping cylinder (8) horizontally installed on the upper end of the shaping fixing block (7), and a shaping baffle (9) installed at the front end of the shaping cylinder (8).

7. The method for detecting paper tube fireworks according to claim 4, characterized in that, The pushing mechanism includes a paper tube firework ball placement platform (10) located behind the shaping workbench (1) for placing paper tube firework balls. The paper tube firework ball placement platform (10) is connected to a lifting cylinder (11) below. The lifting cylinder (11) is located on a support block (12). The support block (12) is fixedly connected to the bottom of the shaping workbench (1). A pushing cylinder (13) is provided on the support block (12). The pushing cylinder (13) is located on the side of the shaping workbench (1) away from the paper tube firework ball placement platform (10). A pushing plate (14) is provided at the front end of the pushing cylinder (13).

8. The method for detecting paper tube fireworks according to claim 1, characterized in that, The photographic detection device (15) includes an imaging unit, a main system, and a motion module. The imaging unit is equipped with a wide-angle lens and a non-wide-angle lens. Each paper tube takes two photos. The wide-angle lens camera takes a photo of the complete paper tube to detect the quality of the paper tube wall and opening. The non-wide-angle lens camera takes a photo of the bottom of the paper tube to detect the number and length of the leads. The main system is used to control the motion module to move and simultaneously control the imaging unit to take photos.

9. The method for detecting paper tube fireworks according to any one of claims 1 to 8, characterized in that, The deformation assembly includes a first lead cylinder (16) disposed on the left and right sides of the shaping device and a lead extrusion plate (17) disposed on the first lead cylinder (16). The two lead extrusion plates (17) are disposed opposite to each other and correspond to the lead position of the paper tube firework. The end face of the lead extrusion plate (17) is in a continuous U-shape, and the protrusion of the lead extrusion plate (17) is in an arc shape and corresponds to the gap between adjacent single tubes of the paper tube firework.

10. The method for detecting paper tube fireworks according to any one of claims 1 to 8, characterized in that: The deformation assembly includes a second lead cylinder (18) disposed on the left and right sides of the shaping device, and a lead shaping frame (19) disposed on the second lead cylinder (18). The lead shaping frame (19) includes a tension main rod connected to the second lead cylinder (18) and a plurality of pull rods disposed at equal intervals on the tension main rod. The gap between the pull rods and the adjacent single tubes of the paper tube firework spheres corresponds to the gap between the pull rods and the two lead shaping frames (19) are mirror images disposed on both sides of the shaping device.

Images