Vacuum sealing and date coding integrated device for chili products

Abstract

This invention relates to the field of packaging machinery technology and discloses an integrated device for vacuum sealing packaging and date coding of chili products. It includes a filling component for filling chili products, a packaging component for vacuum heat sealing coding, and a shaping component disposed between the filling component and the packaging component. The shaping component adjusts the top opening of the bag after the filling component has finished filling the chili products. By actively adjusting the top opening of the packaging bag after the filling component has finished filling the chili products and before it enters the packaging component for vacuum heat sealing coding, the device eliminates wrinkles, collapses, and irregular deformations caused by the filling of chili products, resulting in a flat and regular rectangular opening. This provides a standardized sealing benchmark for subsequent vacuum heat sealing and ensures accurate coding position. It solves the problems of skewed, blurry, and missed coding caused by uneven top openings, improving the packaging appearance quality and the reliability of information labeling.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery technology, and in particular to an integrated device for vacuum sealing packaging and date coding of chili products. Background Technology

[0002] After production, chili products need to be vacuum-sealed to extend shelf life and maintain flavor. Vacuum sealing requires the use of relevant equipment. After vacuum sealing, inkjet printing equipment is also needed to mark the production date and shelf life information. The current production method usually adopts a separate setting for vacuum packaging machine and inkjet printer. After the chili products are vacuum-sealed, they need to be transferred to the inkjet printing station by manual labor or conveyor device for date marking.

[0003] An existing patent (publication number: CN206502078U) discloses a vacuum sealing machine, including a conveyor table and a machine body. A vacuuming mechanism, a sealing mechanism, and a printing mechanism are sequentially arranged on the machine body. The conveyor table is located in front of the machine body. The sealing mechanism includes a conveyor belt arranged vertically for conveying bags, an elastic clamping mechanism arranged along the conveyor belt, a heat sealing mechanism, and a cooling mechanism. The printing mechanism is located at the rear of the sealing mechanism. The vacuuming mechanism is horizontally movable and located at the rear of the sealing mechanism. The vacuuming mechanism has an air nozzle. When sealing the bag, the conveyor table places and conveys the bag, and the bag opening is placed at the inlet of the conveyor belt. The air nozzle of the vacuuming mechanism extends into the bag opening. When the bag opening is conveyed along the vertical conveyor belt, the air nozzle draws air and moves horizontally to enter the conveyor belt for conveying.

[0004] Although this application involves continuing the vacuuming process along the conveyor belt, with an elastic clamping mechanism at the conveyor belt's inlet section to hold the incoming nozzles and prevent damage, and the nozzles are horizontally reset by the vacuuming mechanism after retracting, ensuring no structural interference, and the nozzles can re-extend to continue vacuuming the next bag, in actual use, after filling chili products, the packaging bag bulges irregularly. This causes the top of the bag opening to collapse and wrinkle irregularly due to its own weight, resulting in an uneven cover after heat sealing. Consequently, the date inkjet printing position is difficult to accurately position during subsequent inkjet printing, and the inkjet printing font is prone to skewing, blurring, or even missing inkjet printing, seriously affecting the product's appearance quality and the reliability of information traceability. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated device for vacuum sealing packaging and date coding of chili products, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated device for vacuum sealing packaging and date coding of chili products, comprising a filling component for filling chili products, a packaging component for vacuum heat sealing coding, and a shaping component disposed between the filling component and the packaging component, wherein the shaping component is used to adjust the top bag opening after the filling component has finished filling the chili products; A conveyor belt is provided below the filling and packaging components. The shaping component includes a support frame fixed to the upper surface of the conveyor belt housing. A lifting electric push rod is installed on the upper surface of the support frame. The output end of the lifting electric push rod passes through the support frame and is installed with a track groove. Two track blocks are slidably connected to the inner wall of the track groove. A rod is fixed to the bottom end of each track block. An adjusting motor is installed at the end of the track groove. A threaded rod is rotatably connected to the inner wall of the track groove. A bidirectional threaded groove is opened on the outer surface of the threaded rod. The track blocks are threadedly connected to the threaded rod through the corresponding threaded grooves. The output end of the adjusting motor is connected to the threaded rod through a rotating shaft.

[0007] Preferably, two mounting brackets are fixed to the side of the track groove. An adjusting electric push rod is installed on the outer surface of each mounting bracket. A suction cup is installed at the output end of the adjusting electric push rod. An air pump is installed on the outer surface of the mounting bracket. The output end of the air pump is connected to the corresponding suction cup through a connecting pipe.

[0008] Preferably, the threaded rod is arranged horizontally along the conveyor belt conveying direction, and the two track blocks are symmetrically distributed with the midpoint of the threaded rod as the center of symmetry. The pitch of the bidirectional threaded grooves is equal and the rotation direction is opposite, ensuring that when the adjusting motor drives the threaded rod to rotate, the two track blocks can move synchronously towards or in opposite directions, thereby driving the insert rod to tighten the top opening of the packaging bag.

[0009] Preferably, the two mounting brackets are arranged horizontally and symmetrically perpendicular to the conveyor belt conveying direction, and the distance between the two mounting brackets matches the width of the required packaging bag. By adjusting the extension and retraction control of the electric push rod, the suction cup can adapt to the lateral size changes of packaging bags of different specifications, so as to achieve synchronous adsorption and positioning of the two side walls of the top bag opening.

[0010] Preferably, guide rods are fixed at both ends of the upper surface of the track groove. The guide rods pass through the support frame. Through the sliding cooperation between the guide rods and the support frame, the track groove remains horizontal and stable during the lifting process, avoiding deviation or tilting when the insertion rod is inserted into the top bag opening.

[0011] Preferably, the outer surface of the insert is covered with a food-grade silicone protective sleeve. The bottom end of the silicone protective sleeve has a tapered, rounded structure, and the outer surface is provided with anti-slip texture. Through the elastic cushioning properties of the silicone protective sleeve, the insert is prevented from directly contacting the inner wall of the packaging bag, thus avoiding scratches or punctures. At the same time, the tapered, rounded structure facilitates smooth insertion into the top of the bag opening, while the anti-slip texture enhances the friction with the inner wall of the top of the bag opening, ensuring that the top of the bag opening does not slip during the tightening process.

[0012] Preferably, the filling assembly includes a frame fixed to one side of the conveyor belt. A film-making bag-making device and a filling device are installed on the upper surface of the frame. The film-making bag-making device includes a film unwinding mechanism, a bag forming device, a longitudinal sealing mechanism, a transverse sealing mechanism, and a cutting mechanism. The cutting mechanism is located below the transverse sealing mechanism. The filling device includes a hopper and a metering and feeding mechanism. The film unwinding mechanism continuously unwinds the packaging film, which is then folded into a cylindrical shape by the bag forming device. The longitudinal sealing mechanism heat-seals the longitudinal overlap of the cylindrical film to form a continuous packaging bag cylinder. The transverse sealing mechanism heat-seals the bottom of the packaging bag cylinder to form the bag bottom. The metering and feeding mechanism fills the chili products in the hopper into the packaging bag cylinder according to a set weight. After filling, the cutting mechanism transversely cuts the packaging bag cylinder to form an independent filled packaging bag, which is then placed on the conveyor belt and transported to the shaping assembly.

[0013] Preferably, the packaging assembly includes a vacuum heat-sealing inkjet printing mechanism and a traction mechanism for driving the packaging bag to move. The vacuum heat-sealing inkjet printing mechanism includes a vacuum extraction chamber, a heat-sealing chamber, and an inkjet printing chamber arranged sequentially along the conveyor belt conveying direction.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention, by setting up a shaping component, actively adjusts the top opening of the packaging bag after the filling component completes the filling of chili products and before the packaging component performs vacuum heat sealing and coding. An adjusting electric push rod drives a suction cup to move laterally to both sides of the top bag opening. An air pump generates negative pressure, causing the suction cup to adhere to the outer wall of the top bag opening, thus opening the top bag opening. A lifting electric push rod drives the track groove to descend, allowing the insertion rod to insert into the top bag opening. Then, an adjusting motor drives the threaded rod to rotate, causing the two track blocks to move the insertion rod synchronously in opposite directions. After the insertion rod contacts the top bag opening, as... As the insertion rod continues to move, the force exerted by the insertion rod on the top bag opening exceeds the suction force of the suction cup. The suction cup detaches from the outer wall of the top bag opening, and the insertion rod continues to move in the opposite direction, tightening and straightening the top bag opening to both sides. This eliminates wrinkles, collapses, and irregular deformations caused by the chili product filling, resulting in a flat and regular rectangular opening. This provides a standardized sealing benchmark for subsequent vacuum heat sealing and ensures accurate coding positions. It solves the problems of skewed, blurry, and missed coding caused by unevenness at the top bag opening, improving the packaging appearance quality and the reliability of information labeling.

[0015] 2. This invention utilizes the combined design of the suction cup and insert rod in the shaping component to employ a two-step top bag opening adjustment method: first, suction opens the bag, then inserts and tightens it. Compared to a single mechanical opening or air-blowing shaping method, this method can more effectively handle irregularly bulging top bag openings after filling. The flexible suction of the suction cup avoids damage to the top bag opening caused by rigid insertion, while the reverse movement of the insert rod ensures uniform force on all parts of the top bag opening, resulting in a stable and reliable shaping effect. Furthermore, by adjusting the motor speed control and the threaded rod pitch design, the tightness of the top bag opening can be adjusted to meet the shaping needs of packaging bags of different thicknesses. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the integrated vacuum sealing packaging and date coding device for chili products of the present invention; Figure 2 This is a side view of the film-making device of the integrated vacuum sealing packaging and date coding device for chili products of the present invention; Figure 3 This is a side view of the support frame of the integrated vacuum sealing packaging and date coding device for chili products of the present invention; Figure 4 This is a side view of the insert rod of the integrated vacuum sealing packaging and date coding device for chili products of the present invention; Figure 5 This is a bottom view of the mounting frame of the integrated vacuum sealing packaging and date coding device for chili products according to the present invention.

[0017] In the diagram: 1. Filling assembly; 101. Frame; 102. Roll film bag making device; 1021. Roll film unwinding mechanism; 1022. Bag forming device; 1023. Longitudinal sealing mechanism; 1024. Horizontal sealing mechanism; 1025. Cutting mechanism; 103. Filling device; 1031. Hopper; 1032. Metering and feeding mechanism; 2. Packaging components; 201. Vacuum heat sealing and coding mechanism; 3. Shaping components; 301. Support frame; 302. Lifting electric actuator; 303. Track groove; 304. Track block; 305. Insert rod; 306. Adjusting motor; 307. Threaded rod; 308. Mounting bracket; 309. Adjusting electric actuator; 310. Suction cup; 311. Air pump; 312. Guide rod; 4. Conveyor belt. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] This invention provides, for example Figures 1 to 5 The integrated vacuum sealing packaging and date coding device for chili products shown includes a filling component 1 for filling chili products, a packaging component 2 for vacuum heat sealing coding, and a shaping component 3 disposed between the filling component 1 and the packaging component 2. The shaping component 3 is used to adjust the top bag opening after the filling component 1 has finished filling the chili products.

[0020] A conveyor belt 4 is provided below the filling component 1 and the packaging component 2. The shaping component 3 includes a support frame 301 fixed to the upper surface of the outer shell of the conveyor belt 4. A lifting electric push rod 302 is installed on the upper surface of the support frame 301. The output end of the lifting electric push rod 302 passes through the support frame 301 and is installed with a track groove 303. Two track blocks 304 are slidably connected to the inner wall of the track groove 303. A rod 305 is fixed at the bottom of each track block 304. An adjusting motor 306 is installed at the end of the track groove 303. A threaded rod 307 is rotatably connected to the inner wall of the track groove 303. A bidirectional threaded groove is opened on the outer surface of the threaded rod 307. The track block 304 is threadedly connected to the threaded rod 307 through the corresponding threaded groove. The output end of the adjusting motor 306 is connected to the threaded rod 307 through a rotating shaft.

[0021] Two mounting brackets 308 are fixed to the side of the track groove 303. Adjustable electric push rods 309 are installed on the outer surface of the two mounting brackets 308. Suction cups 310 are installed at the output end of the adjustable electric push rods 309. Air pumps 311 are installed on the outer surface of the mounting brackets 308. The output end of the air pumps 311 is connected to the corresponding suction cups 310 through a connecting pipe. The threaded rod 307 is arranged horizontally along the conveyor belt 4. The two track blocks 304 are symmetrically distributed with the midpoint of the threaded rod 307 as the center of symmetry. The pitch of the bidirectional threaded grooves is equal and the rotation direction is opposite, ensuring that when the adjusting motor 306 drives the threaded rod 307 to rotate, the two track blocks 304 can move synchronously in opposite directions, thereby driving the insertion rod 305 to tighten the top opening of the packaging bag.

[0022] Two mounting brackets 308 are arranged horizontally and symmetrically perpendicular to the conveyor belt 4. The distance between the two mounting brackets 308 matches the width of the required packaging bag. By adjusting the extension and retraction control of the electric push rod 309, the suction cup 310 can adapt to the lateral size changes of packaging bags of different specifications, and realize synchronous adsorption and positioning of the two side walls of the top bag opening. Guide rods 312 are fixed at both ends of the upper surface of the track groove 303. The guide rods 312 pass through the support frame 301. Through the sliding cooperation between the guide rods 312 and the support frame 301, the track groove 303 remains horizontal and stable during the lifting process, and avoids the insertion rod 305 from shifting or tilting when inserted into the top bag opening.

[0023] The outer surface of the insertion rod 305 is covered with a food-grade silicone protective sleeve. The bottom end of the silicone protective sleeve has a tapered and rounded structure, and the outer surface is provided with anti-slip texture. Through the elastic cushioning properties of the silicone protective sleeve, the insertion rod 305 is prevented from directly contacting the inner wall of the packaging bag and causing scratches or punctures. At the same time, the tapered and rounded structure facilitates smooth insertion into the top bag opening, and the anti-slip texture enhances the friction with the inner wall of the top bag opening, ensuring that the top bag opening does not slip during the tightening process.

[0024] The filling assembly 1 includes a frame 101 fixed to one side of the conveyor belt 4. A film-making bag-forming device 102 and a filling device 103 are mounted on the upper surface of the frame 101. The film-making bag-forming device 102 includes a film unwinding mechanism 1021, a bag-forming device 1022, a longitudinal sealing mechanism 1023, a transverse sealing mechanism 1024, and a cutting mechanism 1025. The cutting mechanism 1025 is located below the transverse sealing mechanism 1024. The filling device 103 includes a hopper 1031 and a metering and dispensing mechanism 1032. The film unwinding mechanism 1021 continuously unwinds the packaging film, which is then folded into a cylindrical shape by the bag-forming device 1022. The longitudinal sealing mechanism 1023 seals the cylindrical film longitudinally... The overlapping edges are heat-sealed to form a continuous packaging bag tube. The horizontal sealing mechanism 1024 performs a horizontal heat-sealing at the bottom of the packaging bag tube to form the bag bottom. The metering and feeding mechanism 1032 fills the chili products in the hopper 1031 into the packaging bag tube according to the set weight. After filling, the cutting mechanism 1025 performs a horizontal cutting on the packaging bag tube to form an independent filled packaging bag, which is then placed on the conveyor belt 4 and transported to the shaping component 3. The packaging component 2 includes a vacuum heat-sealing and coding mechanism 201 and a traction mechanism for driving the packaging bag to move. The vacuum heat-sealing and coding mechanism 201 includes a vacuum extraction chamber, a heat-sealing chamber, and a coding chamber arranged sequentially along the conveyor belt 4.

[0025] During use, the filled packaging bag is conveyed by the conveyor belt 4 to the shaping component 3 station. At this time, the packaging bag is irregularly bulging due to the chili products inside. Wrinkles and collapse appear at the top of the bag opening. The control system triggers the action of the adjusting electric push rod 309. The adjusting electric push rods 309 on the two mounting brackets 308 extend synchronously, driving the suction cup 310 to approach the two side walls of the top bag opening of the packaging bag until the suction cup 310 is attached to the outer wall of the top bag opening. The air pump 311 starts to generate negative pressure, and the suction cup 310 adsorbs the two side walls of the top bag opening, so that the originally closed or wrinkled top bag opening is initially opened to form an open state.

[0026] Subsequently, the lifting electric actuator 302 drives the track groove 303 to descend, and the guide rod 312 slides along the support frame 301 to ensure that the track groove 303 moves down horizontally and stably. The bottom end of the insertion rod 305, which is fitted with a food-grade silicone protective sleeve, is aligned with the top bag opening. The tapered and blunt structure facilitates the smooth insertion of the insertion rod 305 into the top bag opening until the insertion rod 305 reaches the set depth. In order to balance the smoothness of insertion and the stability of support, the insertion depth is preferably between 1 / 3 and 1 / 2 of the height of the top bag opening. At this time, the adjusting motor 306 starts to drive the threaded rod 307 to rotate. Since the outer surface of the threaded rod 307 has a bidirectional threaded groove and the two track blocks 304 are respectively engaged with the threaded grooves of different directions of rotation, the two track blocks 304 drive the insertion rod 305 to move synchronously in opposite directions. During the outward movement of the insertion rod 305, it contacts the inner wall of the top bag opening and generates a lateral pulling force.

[0027] By matching the negative pressure threshold of the preset air pump 311 with the output torque of the regulating motor 306, it is ensured that during the tensioning process of the insertion rod 305, when the lateral tension reaches the set value, the tension of the insertion rod 305 on the top bag opening is greater than the suction force of the suction cup 310. The suction cup 310 can automatically and smoothly detach from the bag opening, avoiding damage to the packaging bag caused by forced pulling. The regulating electric push rod 309 drives the suction cup 310 to reset, and the insertion rod 305 continues to move in the opposite direction to fully tighten and straighten the top bag opening to both sides. The anti-slip texture ensures that the top bag opening does not slip during the tensioning process, so that the top bag opening forms a flat and regular rectangular opening. After the shaping is completed, the lifting electric push rod 302 drives the track groove 303 to rise, and the insertion rod 305 is pulled out from the top bag opening. The regulating motor 306 reverses to reset the two track blocks 304. The shaped packaging bag continues to be transported to the packaging component 2 by the conveyor belt 4.

[0028] After entering packaging component 2, the traction mechanism clamps the top opening of the packaging bag on both sides and pulls it through the vacuum extraction chamber. The suction nozzle in the vacuum extraction chamber extends into the top opening of the bag to perform vacuuming. Since the top opening of the bag is flat and regular after shaping, the suction nozzle can be accurately inserted and the top opening of the bag and the periphery of the suction nozzle are kept in uniform contact, ensuring the efficiency of vacuuming and the stability of vacuum. After vacuuming is completed, the packaging bag enters the heat sealing chamber. The heat sealing strip in the heat sealing chamber performs horizontal heat sealing on the flat top opening of the bag, forming a tight and firm seal, avoiding heat sealing problems or air leakage caused by wrinkles at the top opening of the bag.

[0029] After heat sealing, the packaging bag continues to be conveyed to the coding chamber. Due to the shaping of the top bag opening, the sealing line is straight and regular. The coding machine in the coding chamber can position and code the packaging bag cover according to the preset coordinates. The date information is clearly and completely printed in the designated position, eliminating the phenomenon of skewed, blurry and missed coding. After coding is completed, the traction mechanism releases the packaging bag, and the finished packaging bag is output from the end of the conveyor belt 4, completing the integrated operation of vacuum sealing packaging and date coding of chili products.

[0030] Through the coordinated operation of the shaping component 3, filling component 1, and packaging component 2, this device achieves continuous automated production from filling chili products, shaping and adjusting the top bag opening, vacuuming, heat sealing to date coding. Compared with traditional packaging methods, it has significant advantages in dealing with the problem of top bag opening deformation that may occur when handling soft, oily, or irregularly filled chilies. The two-step adjustment mechanism of the shaping component effectively solves the quality defects in subsequent processes caused by uneven bag openings, improving overall packaging efficiency and finished product qualification rate.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated device for vacuum sealing packaging and date coding of chili products, comprising a filling component (1) for filling chili products, a packaging component (2) for vacuum heat sealing and coding, and a shaping component (3) disposed between the filling component (1) and the packaging component (2), characterized in that: The shaping component (3) is used by the filling component (1) to adjust the top opening of the bag after the chili product has been filled; A conveyor belt (4) is provided below the filling component (1) and the packaging component (2). The shaping component (3) includes a support frame (301) fixed to the upper surface of the outer shell of the conveyor belt (4). A lifting electric push rod (302) is installed on the upper surface of the support frame (301). The output end of the lifting electric push rod (302) passes through the support frame (301) and is equipped with a track groove (303). Two track blocks (304) are slidably connected to the inner wall of the track groove (303). A plug rod (305) is fixed at the bottom end of each track block (304). An adjusting motor (306) is installed at the end of the track groove (303). A threaded rod (307) is rotatably connected to the inner wall of the track groove (303). A bidirectional threaded groove is opened on the outer surface of the threaded rod (307). The track block (304) is threadedly connected to the threaded rod (307) through the corresponding threaded groove. The output end of the adjusting motor (306) is connected to the threaded rod (307) through a rotating shaft.

2. The integrated vacuum sealing packaging and date coding device for chili products according to claim 1, characterized in that: Two mounting brackets (308) are fixed on the side of the track groove (303). An adjusting electric push rod (309) is installed on the outer surface of each of the two mounting brackets (308). A suction cup (310) is installed at the output end of the adjusting electric push rod (309). An air pump (311) is installed on the outer surface of the mounting bracket (308). The output end of the air pump (311) is connected to the corresponding suction cup (310) through a connecting pipe.

3. The integrated vacuum sealing packaging and date coding device for chili products according to claim 2, characterized in that: The threaded rod (307) is arranged horizontally along the conveyor belt (4) in the conveying direction. The two track blocks (304) are symmetrically distributed with the midpoint of the threaded rod (307) as the center of symmetry. The pitch of the bidirectional threaded grooves is equal and the direction of rotation is opposite.

4. The integrated vacuum sealing packaging and date coding device for chili products according to claim 2, characterized in that: The two mounting brackets (308) are arranged horizontally and symmetrically perpendicular to the conveyor belt (4) in the conveying direction, and the spacing between the two mounting brackets (308) matches the width of the required packaging bag.

5. The integrated vacuum sealing packaging and date coding device for chili products according to claim 1, characterized in that: Guide rods (312) are fixed at both ends of the upper surface of the track groove (303), and the guide rods (312) pass through the support frame (301).

6. The integrated vacuum sealing packaging and date coding device for chili products according to claim 1, characterized in that: The outer surface of the insertion rod (305) is covered with a food-grade silicone protective sleeve. The bottom end of the silicone protective sleeve has a rounded structure with a tapered transition, and the outer surface is provided with anti-slip texture.

7. The integrated vacuum sealing packaging and date coding device for chili products according to claim 1, characterized in that: The filling assembly (1) includes a frame (101) fixed to one side of the conveyor belt (4). The upper surface of the frame (101) is equipped with a film roll bag making device (102) and a filling device (103). The film roll bag making device (102) includes a film unwinding mechanism (1021), a bag forming device (1022), a longitudinal sealing mechanism (1023), a transverse sealing mechanism (1024), and a cutting mechanism (1025). The cutting mechanism (1025) is located below the transverse sealing mechanism (1024). The filling device (103) includes a hopper (1031) and a metering and feeding mechanism (1032).

8. The integrated vacuum sealing packaging and date coding device for chili products according to claim 1, characterized in that: The packaging assembly (2) includes a vacuum heat-sealing inkjet printing mechanism (201) and a traction mechanism for driving the packaging bag to move. The vacuum heat-sealing inkjet printing mechanism (201) includes a vacuum extraction chamber, a heat-sealing chamber and an inkjet printing chamber arranged sequentially along the conveyor belt (4).

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