Film sealing device for firecracker production

Abstract

The utility model relates to the field of firecracker production, in particular to a film sealing device for firecracker production. At present, a worker needs to match the frequency of a heat sealing machine in real time to adjust the feeding rate of the equipment, so that the heat sealing process of firecrackers is more convenient. A film sealing device for firecracker production comprises a conveyor provided with two sections of conveyor belts, a hot air box fixedly connected to the conveyor, and a bogie fixedly connected to the conveyor. The firecrackers close to the protective shell move forwards to make contact with the plastic packaging film and push the plastic packaging film to move forwards, the plastic packaging film is clamped and subjected to heat sealing and cutting off when the heat sealing plate moves downwards and the contact frame moves upwards, and then the heat sealing machine and the cutting machine conduct heat sealing and edge cutting on the side edges of the plastic packaging film wrapping the firecrackers. And the intermittent moving speed of the firecrackers is matched with the heat sealing speed of the contact frame, the heat sealing frame and the heat sealing plate, so that the heat sealing process of the firecrackers is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of firecracker production, and in particular to a sealing device for firecracker production. Background Technology

[0002] Firecrackers (also known as firecrackers) undergo a heat-sealing process after production, achieved by covering them with a red plastic film for sealing and protection. This process effectively isolates them from environmental moisture, preventing misfires due to dampness during transportation and storage, and ensuring product reliability.

[0003] Currently, some heat-sealing equipment suffers from process efficiency bottlenecks: workers must manually place firecrackers onto a conveyor, which intermittently starts and stops, causing the firecrackers to move intermittently, thus pushing the red plastic film along with the firecrackers. When the conveyor stops, the firecrackers and red plastic film pass over the heat-sealing machine, which then welds and cuts the film. If workers fail to place the firecrackers when the conveyor stops, the product will not reach the designated position, requiring manual adjustment. Because the synchronization between the heat-sealing rhythm and material conveying depends on manual adjustment, workers must constantly match the frequency of the heat-sealing machine to adjust the feeding rate, making the firecracker heat-sealing process even more inconvenient. Utility Model Content

[0004] To overcome the shortcomings of current equipment that requires staff to adjust the feeding rate in real time to match the frequency of the heat sealing machine, making the heat sealing process of firecrackers less convenient, this utility model provides a firecracker production sealing device that makes the intermittent moving speed of the firecrackers and the heat sealing speed of the heat sealing mechanism work together, thereby making the heat sealing process of firecrackers more convenient.

[0005] Technical solution: A sealing device for firecracker production, comprising:

[0006] A conveyor equipped with two conveyor belts;

[0007] A hot air box fixed to the conveyor;

[0008] Bogies fixed to the conveyor;

[0009] The heat sealing mechanism is located on the conveyor.

[0010] Preferably, it also includes a plastic wrap and firecrackers, with the plastic wrap placed on the bogie and three firecrackers placed on the conveyor.

[0011] Preferably, the heat sealing mechanism includes: a heat sealing machine fixed to the conveyor, a cutting machine fixed to the heat sealing machine, an electric push rod fixed to the conveyor, a lifting frame fixedly connected to the telescopic rod of the electric push rod, a protective shell fixed to the conveyor, a contact frame slidably connected to the protective shell, the contact frame being fixedly connected to the lifting frame, a heat sealing frame slidably connected to the protective shell, a heat sealing plate fixed to the heat sealing frame, two racks respectively fixed to the contact frame and the heat sealing frame, and a gear rotatably connected to the conveyor, the gear meshing with the two racks.

[0012] Preferably, the system also includes a guide frame and blocking bars, a guide frame slidably connected to the lifting frame and having three guide slots, and three blocking bars slidably connected to the conveyor, with the three blocking bars slidably connected to the three guide slots of the guide frame.

[0013] Preferably, it also includes a restraining frame, which is fixed to the conveyor and comes into contact with the firecracker.

[0014] The beneficial effects of this utility model are: 1. When the lifting frame moves upward, the guide frame causes the three blocking bars to move: the two blocking bars on both sides move closer to the firecracker, and the middle blocking bar moves away from the firecracker. The middle blocking bar no longer blocks the firecracker, allowing it to move forward. The firecracker will contact the blocking bar closest to the protective shell and stop moving, while the blocking bar furthest from the protective shell will intercept the firecracker behind it. When the lifting frame moves downward, the guide frame causes the three blocking bars to move: the two blocking bars on both sides move away from the firecracker, and the middle blocking bar moves closer to the firecracker. As the firecracker moves, the blocking bars at both ends no longer obstruct it, allowing it to continue moving forward. Firecrackers moving away from the protective shell will be stopped by the middle blocking bar after traveling a certain distance. Firecrackers moving closer to the protective shell will contact the plastic film and push it forward. The downward movement of the heat-sealing plate and the upward movement of the contact frame will clamp the plastic film and heat-seal and cut it. Then, the heat-sealing machine and the cutting machine will heat-seal and cut the sides of the plastic film wrapping the firecracker. This allows the intermittent movement speed of the firecracker to coordinate with the heat-sealing speed of the contact frame, heat-sealing frame, and heat-sealing plate, making the heat-sealing process of the firecracker more convenient. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a partial three-dimensional structural diagram of the heat sealing mechanism of this utility model.

[0018] Figure 4This is a partial cross-sectional three-dimensional structural schematic diagram of the heat sealing mechanism of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the guide frame and blocking rod of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1_Conveyor, 2_Hot air box, 3_Bogie, 4_Plastic sealing film, 41_Firecracker, 5_Heat sealing machine, 7_Cut machine, 8_Electric push rod, 9_Lifting frame, 10_Protective shell, 11_Contact frame, 12_Heat sealing frame, 121_Heat sealing plate, 13_Rack and pinion, 14_Gear, 15_Guide frame, 16_Blocking bar, 17_Restriction frame. Detailed Implementation

[0021] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0022] Example 1: A sealing device for firecracker production, such as... Figures 1-5 As shown, it includes:

[0023] Conveyor 1 equipped with two conveyor belts;

[0024] The hot air box 2 is bolted to the conveyor 1;

[0025] Bogie 3 welded onto conveyor 1;

[0026] A heat-sealing mechanism, used for heat-sealing firecrackers, is installed on conveyor 1.

[0027] It also includes a plastic seal 4 and firecrackers 41, the plastic seal 4 is placed on a bogie 3, the bogie 3 is used to turn the plastic seal 4, and three firecrackers 41 are placed on a conveyor 1.

[0028] The heat sealing mechanism includes: a heat sealing machine 5 bolted to the conveyor 1; a cutting machine 7 bolted to the heat sealing machine 5; an electric push rod 8 bolted to the conveyor 1; a lifting frame 9 fixedly connected to the telescopic rod of the electric push rod 8; a protective shell 10 bolted to the conveyor 1; a contact frame 11 slidably connected inside the protective shell 10; the contact frame 11 being welded to the lifting frame 9; a heat sealing frame 12 slidably connected inside the protective shell 10; a heat sealing plate 121 welded to the heat sealing frame 12; two racks 13 respectively welded to the contact frame 11 and the heat sealing frame 12; and a gear 14 rotatably connected to the conveyor 1, the gear 14 meshing with the two racks 13.

[0029] It also includes a guide frame 15 and a blocking rod 16. The guide frame 15 is slidably connected to the lifting frame 9 and has three guide slots. The three blocking rods 16 are slidably connected to the conveyor 1. The three blocking rods 16 are slidably connected to the three guide slots of the guide frame 15.

[0030] It also includes a restraint frame 17, which is marked on the conveyor 1. The restraint frame 17 is in contact with the firecracker 41 and is used to restrain the firecracker 41.

[0031] Initially, the workers placed the plastic sealing film 4 onto the bogie 3. Then, they started the conveyor 1, hot air box 2, heat sealing machine 5, cutting machine 7, heat sealing plate 121, and electric push rod 8. The workers then continuously placed firecrackers 41 onto the conveyor 1. One section of the conveyor belt on the conveyor 1 transported the firecrackers 41 forward. As the firecrackers 41 moved forward, they contacted the middle stop bar 16 and stopped moving. The extension rod of the electric push rod 8 moved upward, causing the lifting frame 9 to move upward. The lifting frame 9 moved upward, causing the contact frame 11 to move upward. The contact frame 11 moved upward, causing the rack 13 to move upward. The upward movement of the rack 13, through the gear 14, caused another rack 13 to move downward. The downward movement of the other rack 13 caused the heat sealing frame 121 and the heat... The sealing plate 121 moves downward, and simultaneously the lifting frame 9 moves upward a certain distance, which pushes the guide frame 15 upward. The upward movement of the guide frame 15 causes it to press against the three blocking rods 16 through its three guide slots. As the guide frame 15 continues to move upward, the three blocking rods 16 move. The two blocking rods on the sides move closer to the firecracker 41, while the middle blocking rod moves away from the firecracker 41. The middle blocking rod no longer blocks the firecracker 41, allowing it to move forward. The firecracker 41 moves forward and contacts the blocking rod 16 closest to the protective shell 10, stopping its movement. The blocking rod 16 furthest from the protective shell 10 intercepts the firecracker 41 behind it. Then, the telescopic rod of the electric push rod 8 returns to its original position downward. When the telescopic rod of lever 8 returns to its original position, it causes the lifting frame 9 to move downward. The downward movement of the lifting frame 9 causes the contact frame 11 to move downward. The downward movement of the contact frame 11 causes the rack 13 to move downward. The downward movement of the rack 13, via gear 14, causes another rack 13 to move upward. The upward movement of the other rack 13 causes the heat sealing frame 12 and heat sealing plate 121 to move upward. Simultaneously, after the lifting frame 9 moves downward a certain distance, it pushes the guide frame 15 downward. The downward movement of the guide frame 15 causes the three guide grooves of the guide frame 15 to press against the three blocking rods 16, causing the three blocking rods 16 to move. The two blocking rods on the sides move away from the firecracker 41, the middle blocking rod moves closer to the firecracker 41, and the blocking rods at both ends move away from the firecracker 41. Rod 16 no longer blocks firecracker 41, allowing it to continue moving forward. Firecrackers 41 moving away from protective shell 10 will be blocked by the middle blocking rod 16 after traveling a certain distance. Firecrackers 41 moving closer to protective shell 10 will contact the plastic sealing film 4 and push it forward. After firecracker 41 carrying plastic sealing film 4 crosses the first section of the conveyor belt of conveyor 1, the telescopic rod of electric push rod 8 drives the lifting frame 9, contact frame 11, and rack 13 to move upward. The upward movement of rack 13 will drive another rack 13 to move downward. The downward movement of the other rack 13 will drive the heat sealing frame 12 and heat sealing plate 121 to move downward. The downward movement of heat sealing plate 121 and the upward movement of contact frame 11 will clamp the plastic sealing film 4 and perform heat sealing and cutting of the plastic sealing film 4.After the plastic film 4 wrapping the firecracker 41 is heat-sealed, it is carried forward by the second section of the conveyor belt 1. The plastic film 4 wrapping the firecracker 41 will come into contact with the heat sealing machine 5, which heat-seals the sides of the plastic film 4 wrapping the firecracker 41. The plastic film 4 wrapping the firecracker 41 continues to move forward and comes into contact with the cutting machine 7, which cuts off the excess plastic film 4 wrapping the firecracker 41. Then the plastic film 4 wrapping the firecracker 41 continues to move forward into the hot air box 2, causing the plastic film 4 to shrink and fit over the firecracker 41. Finally, the sealed firecracker 41 is transported away by the second section of the conveyor belt 1. At the same time, the lifting frame 9 moves upward, which pushes the guide frame 15 upward. The upward movement of the guide frame 15 will cause the obstruction When rod 16 moves, the middle blocking rod 16 moves, causing the blocked firecracker 41 to move forward. The blocking rods at both ends of rod 16 move, blocking the firecracker 41 and preventing it from moving further. This intermittent movement speed of the firecracker 41 coordinates with the heat-sealing speed of the contact frame 11, heat-sealing frame 12, and heat-sealing plate 121, making the heat-sealing process of the firecracker 41 more convenient. Then, the telescopic rod of the electric push rod 8 drives the lifting frame 9, rack 13, contact frame 11, heat-sealing frame 12, heat-sealing plate 121, guide frame 15, and blocking rod 16 to reset. This process is repeated until the firecracker 41 is sealed. Afterward, the operator shuts off the conveyor 1, hot air box 2, heat-sealing machine 5, cutting machine 7, heat-sealing plate 121, and electric push rod 8.

[0032] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A device for producing a sealed film for firecrackers, characterized in that, The utility model relates to a plastic sealing device for firecracker, which comprises: A conveyor (1) with two conveying belts; A hot air box (2) fixed on the conveyor (1); A bogie (3) fixed on the conveyor (1); A heat sealing mechanism arranged on the conveyor (1).

2. The device for sealing the firecracker production according to claim 1, wherein the device is characterized in that, The device also comprises plastic sealing films (4) and firecrackers (41), wherein the plastic sealing films (4) are placed on the bogie (3), and the firecrackers (41) are placed on the conveyor (1).

3. The device for sealing the firecracker production according to claim 2, wherein the device is characterized in that, The heat sealing mechanism comprises a heat sealer (5) fixed on the conveyor (1), a cutting machine (7) fixed on the heat sealer (5), an electric push rod (8) fixed on the conveyor (1), a lifting frame (9) fixed on the extension rod of the electric push rod (8), a protective shell (10) fixed on the conveyor (1), a contact frame (11) slidingly connected in the protective shell (10), the contact frame (11) being fixed with the lifting frame (9), a heat sealing frame (12) slidingly connected in the protective shell (10), a heat sealing plate (121) fixed on the heat sealing frame (12), two racks (13) respectively fixed on the contact frame (11) and the heat sealing frame (12), a gear (14) rotatably connected on the conveyor (1), and the gear (14) being engaged with the two racks (13).

4. The device for sealing the firecracker production according to claim 3, wherein the device is characterized in that, The device also comprises a guide frame (15) and blocking rods (16), wherein the guide frame (15) is slidingly connected on the lifting frame (9) and has three guide slots, and the three blocking rods (16) are slidingly connected on the conveyor (1) and are slidingly connected with the three guide slots of the guide frame (15).

5. The device for sealing the firecracker production according to claim 4, wherein the device is characterized in that, The device also comprises a limiting frame (17), wherein the limiting frame (17) is fixed on the conveyor (1) and is in contact with the firecrackers (41).

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