Conical barrel and production process thereof

Abstract

The invention relates to the technical field of conical barrel production, in particular to a conical barrel and a production process thereof.The conical barrel comprises a barrel body, a barrel bottom, a barrel cover and a sealer, the barrel body is in a big-end-up conical shape, and the outer side of the upper portion of the barrel body protrudes outwards to form an annular first reinforcing rib. The bucket is reasonable and compact in structure, the bucket body is in a big-end-up cone shape, so that multiple bucket bodies can be sleeved together, the storage space is reduced, transfer and transportation of the bucket bodies are facilitated, the upper end of the bucket body is turned outwards to form a reel pipe with an annular section, grabbing of the bucket bodies is facilitated after the multiple bucket bodies are sleeved together, and the bucket is convenient to use. The barrel body is prevented from being scratched by the upper edge of the barrel body in the barrel body grabbing process, the safety performance is improved, meanwhile, the strength of the barrel body can be improved through the arrangement of the reel pipe, the phenomenon that the barrel body cracks when the first reinforcing ribs are formed is avoided, the reel pipe and the barrel cover can be rapidly installed together through the sealer conveniently, and in order to improve the sealing performance, the sealing effect is good. And a sealing ring is arranged between the upper side of the reel pipe and the barrel cover.

Description

Technical Field

[0001] The invention relates to the technical field of conical barrel production, in particular to a conical barrel and a production process thereof. Background Art

[0003] As an outer packaging product, conical barrels can be stacked together during transportation and storage, which can greatly save transportation costs and storage space, and are therefore increasingly widely used. At present, the thickness of the color steel coils of domestic conical barrel products is 0.8 to 1.5 mm, and the material cost accounts for more than 80% of the product cost. The conical barrel is a paint barrel with a conical opening. The barrel body and the bottom cover have the same thickness. The conical barrel is formed by cutting the color steel coils into a circle and welding them together with the barrel bottom and top cover.

[0004] In the production process of conical barrels, the barrel body, barrel cover and barrel bottom are generally processed from color steel coils. The welding of the two sides of the barrel body is generally carried out using a seam welder. A seam welder refers to a resistance welding machine that assembles the weldment into a lap joint or butt joint and places it between two roller electrodes. The roller electrodes pressurize the weldment and rotate, and continuously or intermittently pulse power to form a continuous weld. Seam welding is widely used in the manufacture of joints that require sealing, and is sometimes used to weld ordinary non-sealed sheet metal parts. The thickness of the welded metal material is usually 0.1 to 2.5 mm. Seam welders are widely used in the welding of thin plates of sealed containers such as oil drums, cans, radiators, aircraft and automobile fuel tanks.

[0005] However, when using a seam welding machine to weld the barrel body material, it is necessary to grind both sides of the barrel body material (color-coated steel). The harmful substances (paint and dust) generated during the grinding process will pollute the environment and cause damage to the human body. In order to centrally treat the harmful substances generated during the grinding process and avoid affecting the health of workers in other processes, it is necessary to set up a separate work area for the grinding process, which increases the construction cost. At the same time, the grinding process is separated from other processes, and the barrel body material needs to be transported back and forth, which is time-consuming and labor-intensive, and the manufacturing cost of the barrel body is relatively high.

[0006] In addition, when the seam welder welds both sides of the barrel body material, there needs to be an overlapping area of ​​2 to 3 mm wide, resulting in a waste of barrel body material. Moreover, after welding, the seam welder causes the width of the heat-affected zone of the barrel body material's weld to be larger, which will reduce the internal structure and stability of the barrel body material, and the weld strength is poor. In the subsequent process of expanding the cone, expanding the ribs and flanging, the weld is prone to cracking when the welded barrel body expands outward (expanding the cone), resulting in the need for operators to repair the cracked weld again, which is time-consuming and labor-intensive.

[0007] There are certain steps on both the front and back sides of the barrel body welded by the seam welding machine. In order to prevent the steps on the inner side of the barrel body from scratching and breaking the plastic bags and sterile bags, the operators are required to stick tape on the inner surface of the barrel body weld to form a protective layer to prevent scratching the plastic bags and sterile bags. However, in the process of making the protective layer, the operators are required to bend down to the bottom of the barrel body to start making and sticking tape, and the barrel body height is 1000 mm or 1025 mm. Tape needs to be stuck inside each barrel body, which increases the labor intensity of the operators and reduces the production efficiency of the conical barrel. In addition, there are safety hazards when the operators stick the tape. Summary of the invention

[0008] The present invention provides a conical barrel and a production process thereof, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of the existing conical barrels being inconvenient to transport and having high production costs.

[0009] One of the technical solutions of the present invention is achieved through the following measures: a conical barrel, including a barrel body, a barrel bottom, a barrel cover and a closure device, the barrel body is in a cone shape with a larger upper part and a smaller lower part, the outer side of the upper part of the barrel body protrudes outward to form a first annular reinforcing rib, the inner side of the lower end of the barrel body and the outer side of the barrel bottom are sealed and fixed together, the upper end of the barrel body is folded outward to form a rolled tube with a circular cross-section, and the rolled tube and the barrel cover are detachably fixed together through the closure device.

[0010] The following is a further optimization and / or improvement of one of the above-mentioned technical solutions: The lower end of the barrel bottom can bulge downward to form several circles of annular second reinforcing ribs, and the lower ends of the barrel bottom between two adjacent circles of second reinforcing ribs bulge downward to form third reinforcing ribs consistent with the radial direction of the barrel bottom, and the lower end of each circle of second reinforcing ribs is evenly spaced along the circumference with several vertically penetrating air holes.

[0011] The outer side of the barrel bottom is bent to form an arc-shaped inner turning edge with the opening inward, and the lower end of the barrel body is expanded outward to form a conical outer turning edge with a larger upper part and a smaller lower part, and the outer turning edge and the inner turning edge are engaged with each other.

[0012] The second technical solution of the present invention is achieved by the following measures: A production process of a conical barrel includes the following steps: S1, making the barrel body, including: S11, unwind and flatten the barrel material; S12, rolling the barrel body material into a round shape, and fixing two sides of the barrel body material close to each other together by laser welding to form a round barrel; S13, standing the round barrel upright and then expanding the barrel to form a cone barrel; S14, expanding the upper part of the cone barrel to form a first reinforcing rib, flanging the upper end of the cone barrel to form a rolled tube, and flanging the lower end of the cone barrel to form an outer flanging; S2, making the barrel bottom, including: S21, unroll and flatten; S22, adjusting the conveying direction and conveying length of the barrel bottom material; S23, forming air holes on the surface of the barrel bottom material by offset punching; S24, punching the surface of the barrel bottom material with the air permeable holes to form a circular barrel bottom material with a second reinforcing rib and a third reinforcing rib; S25, flanging the outer edge of the circular barrel bottom material to form an arc-shaped inner flanging with an opening inward; S3, making barrel cover, including: S31, unroll and flatten; S32, adjusting the conveying direction and conveying length of the barrel cover material; S33, punching the surface of the barrel cover material to form a round barrel cover; S4, fixing the outer side of the barrel bottom and the lower end of the barrel body together to form an open cone barrel; S5, spraying, drying and coding the weld of the open cone barrel in sequence; S6, packaging the barrel cover and the open cone barrel in step S5 respectively and storing them.

[0013] The following is a further optimization and / or improvement of the second technical solution of the above invention: In the above step S6, the barrel cover and the open cone barrel in step S5 are packaged by wrapping a film around the outside.

[0014] In the above step S6, four barrels formed by sequentially fitting together the plurality of open cone barrels in step S5 from bottom to top are placed on the upper side of a pallet and then packaged by wrapping with film.

[0015] In the above step S6, the pallet is placed in a pit, and a lift for lifting the pallet is provided in the pit.

[0016] In the above step S11, the length error and width error of the barrel body material are 0 to 0.5 mm, and the length error of the two diagonals of the barrel body material is not greater than 1 mm.

[0017] The present invention has a reasonable and compact structure, and the barrel body is in a tapered shape with a larger upper part and a smaller lower part, so that multiple barrel bodies can be put together, thereby reducing storage space and facilitating the transfer and transportation of the barrel bodies. The barrel body and the barrel bottom are fixed together, and then a plastic bag and an aseptic bag are sequentially put into the barrel body from the outside to the inside, and then ketchup is filled in the aseptic bag, and then the barrel cover and the upper end of the barrel body are fixedly installed together through a closure device, which is convenient for transporting the whole barrel of ketchup. The upper end of the barrel body is folded outward to form a coiled tube with a ring-shaped cross section, so that after multiple barrel bodies are put together, it is convenient to grab the barrel body, avoid being scratched by the edge of the barrel body during the process of grabbing the barrel body, and improve safety performance. At the same time, the setting of the coiled tube can also improve the strength of the barrel body, and avoid cracking of the barrel body when the first reinforcement rib is formed. The setting of the coiled tube is also convenient for rapid installation with the barrel cover through the closure device. In order to increase the sealing performance, a sealing ring is installed between the upper side of the coiled tube and the barrel cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a schematic diagram of the front view and cross-sectional structure of the barrel body before the barrel body and the barrel bottom are installed in embodiments 1 to 3 of the present invention.

[0019] Attached Figure 2 It is a schematic diagram of the top view of the barrel bottom in embodiments 1 and 2 of the present invention.

[0020] Attached Figure 3 It is a schematic diagram of the main cross-sectional structure of the barrel bottom in embodiments 1 and 2 of the present invention.

[0021] Attached Figure 4 It is a schematic diagram of the partial cross-sectional structure of the barrel body and the barrel cover after installation in embodiments 1 to 3 of the present invention.

[0022] Attached Figure 5 It is a schematic diagram of the partial cross-sectional structure of the barrel body and the barrel bottom after installation in embodiments 1 to 3 of the present invention.

[0023] Attached Figure 6 This is a schematic diagram of the process structure for making a barrel body in the fourth embodiment of the present invention.

[0024] Attached Figure 7 The figure is a schematic diagram of the process structure for making the barrel bottom in the fourth embodiment of the present invention.

[0025] Attached Figure 8 It is a schematic diagram of the top view of the conveyor belt during offset stamping in the fourth embodiment of the present invention.

[0026] Attached Fig. 9 It is a schematic diagram of the top view structure of the offset stamping in the fourth embodiment of the present invention.

[0027] Attached Fig.10 Schematic diagram of the top view of the bottom of the barrel after the air holes are punched in the fourth embodiment of the present invention.

[0028] The codes in the accompanying drawings are: 1 for the barrel body, 2 for the barrel bottom, 3 for the barrel cover, 4 for the closure, 5 for the first reinforcing rib, 6 for the coiled tube, 7 for the second reinforcing rib, 8 for the third reinforcing rib, 9 for the air vent, 10 for the inner flanging, 11 for the outer flanging, 12 for the unwinding and shearing unit, 13 for the rolling laser welding machine, 14 for the barrel expanding machine, 15 for the unwinding machine, 16 for the leveling machine, 17 for the servo feeder, 18 for the punching machine, 19 for the pre-rolling machine, 20 for the shearing machine, 21 for the pallet, and 22 for the elevator. DETAILED DESCRIPTION

[0029] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0030] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0031] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As shown in the attached Figures 1 to 5 As shown, the conical barrel includes a barrel body 1, a barrel bottom 2, a barrel cover 3 and a closure device 4. The barrel body 1 is in a cone shape with a larger upper portion and a smaller lower portion. The outer side of the upper portion of the barrel body 1 bulges outward to form a first annular reinforcing rib 5. The inner side of the lower end of the barrel body 1 is sealed and fixedly installed with the outer side of the barrel bottom 2. The upper end of the barrel body 1 is folded outward to form a rolled tube 6 with a circular cross-section. The rolled tube 6 and the barrel cover 3 are detachably fixedly installed together through the closure device 4.

[0032] According to the requirements, the lower part of the barrel body 1 is also conical with a larger upper part and a smaller lower part, and the taper of the lower part of the barrel body 1 is greater than the taper of the upper part of the barrel body 1. The closure 4 is an existing well-known technology, such as a lever-type closure. The barrel cover 3 has the same structure as the barrel bottom 2, and the barrel body 1 and the barrel bottom 2 are fixed together to form an open conical barrel. During use, the barrel body 1 is in a tapered shape with a larger top and a smaller bottom, so that multiple barrel bodies 1 can be put together, thereby reducing storage space and facilitating the transfer and transportation of the barrel body 1. In this embodiment, the barrel body 1 and the barrel bottom 2 are fixed together, and then a plastic bag and an aseptic bag are successively put into the barrel body 1 from the outside to the inside, and then the aseptic bag is filled with ketchup, and then the barrel cover 3 and the upper end of the barrel body 1 are fixed together through the closure 4, which is convenient for the transportation of the whole barrel of ketchup. The upper end of the barrel body 1 is folded outward to form a reel 6 with a ring-shaped cross-section, so that after multiple barrel bodies 1 are put together, it is convenient to grab the barrel body 1, avoid being scratched by the upper edge of the barrel body 1 during the process of grabbing the barrel body 1, and improve safety performance. At the same time, the setting of the reel 6 can also improve the strength of the barrel body 1, and avoid cracking of the barrel body 1 when the first reinforcing rib 5 is formed. The setting of the reel 6 also facilitates quick installation with the barrel cover 3 through the closure 4. In order to increase the sealing performance, a sealing ring is installed between the upper side of the reel 6 and the barrel cover 3.

[0033] The above-mentioned conical barrel can be further optimized and / or improved according to actual needs: Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown in Figures 3 and 5, the lower end of the barrel bottom 2 bulges downward to form a plurality of annular second reinforcing ribs 7, and the lower ends of the barrel bottom 2 between two adjacent circles of the second reinforcing ribs 7 bulge downward to form third reinforcing ribs 8 which are consistent with the radial direction of the barrel bottom 2, and the lower end of each circle of the second reinforcing ribs 7 is evenly spaced along the circumference with a plurality of vertically through-going air holes 9.

[0034] During use, by setting the second reinforcing ribs 7 and the third reinforcing ribs 8, it is possible to avoid the air holes 9 from reducing the strength of the barrel bottom 2, thereby ensuring the overall strength of the conical barrel during use. By setting the air holes 9, after the conical barrel is put into a plastic bag and a sterile bag, the condensed water on the surface of the plastic bag can be discharged from the air holes 9. At the same time, the second reinforcing ribs 7 and the third reinforcing ribs 8 are formed by the barrel bottom 2 bulging downward, so that there are multiple interconnected arc-shaped grooves on the upper surface of the barrel bottom 2, and the air holes 9 are located at the bottom of the arc-shaped grooves. The arc-shaped grooves can have the effect of converging condensed water, and the condensed water can finally enter the air holes 9 for discharge.

[0035] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 , 5 As shown, the outer side of the barrel bottom 2 is bent to form an arc-shaped inner flange 10 opening inward, and the lower end of the barrel body 1 is expanded outward to form a tapered outer flange 11 with a larger upper portion and a smaller lower portion, and the outer flange 11 and the inner flange 10 are engaged with each other.

[0036] During use, the outer side of the barrel bottom 2 is bent to form an arc-shaped inner flange 10 opening inward, which can increase the contact area between the barrel bottom 2 and the barrel body 1, ensure the strength after biting, and prevent the barrel bottom 2 and the barrel body 1 from separating from each other. The lower end of the barrel body 1 expands outward to form a conical outer flange 11 with a larger upper part and a smaller lower part. In this way, the outer flange 11 and the inner flange 10 can be quickly bitten together by a curling machine to form a triple curling, thereby increasing the strength of the connection between the barrel body 1 and the barrel bottom 2.

[0037] Embodiment 4: As shown in the attached Figures 1 to 10 As shown, the production process of the conical barrel includes the following steps: S1, making barrel body 1, including: S11, unwind and flatten the barrel body material: install the 0.8mm*1000mm color coated coil on the unwinding and shearing unit 12, the model of the unwinding and shearing unit 12 is ZQ-110 or T44K-1.5*1300, the unwinding and shearing unit 12 cuts the color coated coil into multiple 1624mm*1000mm or 1624*1025mm sheets, and realizes the operation of unwinding the barrel body material. The former is used to make the barrel body 1 of the conical barrel with a capacity of 215L, and the latter is used to make the barrel body 1 of the conical barrel with a capacity of 225L. The cut barrel body materials are placed on a pallet, with 350 to 400 sheets stacked on one pallet, and can also be directly transported to the next process by a robotic arm or a cylinder conveyor line; S12, rolling the barrel body material into a round shape, and fixing the two sides of the barrel body material close to each other by laser welding to form a round barrel: the cut barrel body material enters the rolling laser welding machine 13 through the cylinder conveyor line. The model of the rolling laser welding machine 13 is Zxl-fcgd1000W. The rolling laser welding machine 13 rolls the barrel body material into a round shape and then welds the two sides close to each other, so that the barrel body material forms a round barrel with a tubular structure; S13, after the drum is erected, it is expanded to form a conical drum: the drum is converted from a horizontal state to a vertical state after passing through an automatic steel drum turning device disclosed in a Chinese patent document with a publication number of CN217349642U, and then is conveyed to a drum expanding machine 14 by a drum conveyor line. The drum expanding machine 14 has a model of ZZJ, and the drum expanding machine 14 expands the drum to form a conical drum with a conical tube structure of a larger top and a smaller bottom; S14, expanding the upper part of the conical barrel to form a first reinforcing rib 5, flanging the upper end of the conical barrel to form a rolled tube 6, and flanging the lower end of the conical barrel to form an outer flanging 11: after the conical barrel passes through the expanding operation area of ​​the barrel expander 14 (model ZZJ), a first reinforcing rib 5 with an annular cross section and an arc shape with an opening inward is formed on the upper part of the conical barrel, and then enters the rolling operation area of ​​the barrel expander 14 (model ZZJ), the barrel expander 14 rolls the upper end of the conical barrel with the first reinforcing rib 5 to form a rolled tube 6, and at the same time, the lower end of the conical barrel with the first reinforcing rib 5 is flanging to form an outer flanging 11; S2, making barrel bottom 2, including: S21, unwinding and flattening: install the 0.8mm*1100mm color-coated coil on the unwinding machine 15, the model of the unwinding machine 15 is KJ-1600*12T, pass one end of the color-coated coil through the leveling machine 16, the model of the leveling machine 16 is XP-1380*11-5, and the surface of the color-coated coil is smoother after passing through the leveling machine 16; S22, adjusting the conveying direction and conveying length of the barrel bottom material: one end of the color-coated coil passes through the leveling machine 16 and then passes through the servo feeder 17. The model of the servo feeder 17 is NCF-1300. It adjusts the conveying length of the color-coated coil each time and ensures that the conveying direction of the color-coated coil is the same each time without swinging; S23, forming air holes 9 on the surface of the barrel bottom material by offset punching: four punching machines 18 are staggeredly distributed on both sides of the color-coated coil along the conveying direction of the color-coated coil, and the model of the punching machine 18 is JH21-160. The four punching machines 18 have the same working frequency. When working at the same time, the barrel bottom material with a diameter of 578 mm can be offset processed on the surface of the 1100 mm wide color-coated coil. The two punching machines 18 close to the servo feeder 17 and located on both sides of the color-coated coil are used to make the air holes 9, and the remaining two punching machines 18 are used to cut and make the second reinforcing rib 7 and the third reinforcing rib 8; S24, after punching the surface of the barrel bottom material with the air vent 9, a circular barrel bottom material with the second reinforcing rib 7 and the third reinforcing rib 8 is formed, and the diameter of the second reinforcing rib 7 and the third reinforcing rib 8 after production is 558 mm. The sheared waste is sheared by the shearing machine 20 and then collected. The model of the shearing machine 20 is JB-2000. S25, flanging the outer edge of the circular barrel bottom material to form an arc-shaped inner flange 10 with an opening facing inward: conveying the circular barrel bottom material with the second reinforcing rib 7 and the third reinforcing rib 8 and a diameter of 558 mm to a pre-rolling machine 19 through a roller conveyor. The model of the pre-rolling machine 19 is YJ-600. The pre-rolling machine 19 flanging the edge of the circular barrel bottom material to form an outer flange 11 and a barrel bottom 2 with a diameter of 553 mm; S3, making barrel cover 3, including: S31, unroll and flatten; S32, adjusting the conveying direction and conveying length of the barrel cover 3 material; S33, punching the surface of the barrel cover 3 material to form a circular barrel cover 3, and the steps of making the barrel cover 3 are the same as the steps of making the barrel bottom 2; S4, the outer side of the barrel bottom 2 is fixedly mounted on the lower end of the barrel body 1 to form an open cone barrel: when the barrel body 1 is processed with the outer flange 11 by the barrel expander 14, the prepared barrel bottom 2 is conveyed to the barrel expander 14 flanging process on the cylinder conveyor line, and the barrel expander 14 moves the barrel bottom 2 to the inner side of the lower part of the barrel body 1, and the barrel expander 14 engages the outer flange 11 and the inner flange 10 to form a triple curling (see Appendix Figure 5 ), the barrel bottom 2 and the barrel body 1 can be fixed together to form an open cone barrel; S5, spraying, drying and coding the weld of the open cone barrel in sequence: spraying paint on the weld surface of the open cone barrel can not only protect the weld, but also improve the appearance quality of the open cone barrel, then drying the paint, and finally coding on the surface of the barrel body 1, the coding information includes the volume, such as 225L or 215L, and can also include the production batch information of the open cone barrel, such as the production date, so as to facilitate the identification of the open cone barrel; S6, packaging the barrel cover 3 and the open cone barrel in step S5 respectively and putting them into storage, so that the open cone barrels can be managed uniformly.

[0038] During the production process, the two sides of the barrel are fixed together by laser welding to form a round barrel, which has the following advantages: First, the laser weld of the barrel body 1 makes the two sides of the barrel body material overlap, which can save raw materials. Ordinary barrel body materials need to have an overlap width when overlapping and welding on both sides. After welding, a 2 to 3 mm wide boss will be formed. Before welding, the welding surface needs to be depainted and the groove needs to be polished. Laser welding only needs to align the two sides of the barrel body material before welding, avoiding harmful substances in the process of depainting and polishing the groove to pollute the environment and cause damage to the human body, and can also reduce energy consumption.

[0039] Second, the heat-affected zone of the laser weld of the barrel body 1 is 2 to 3 mm, while the width of the heat-affected zone of the existing lap welding is 15 to 20 mm, which can reduce the impact on the internal structure and stability of the barrel body material.

[0040] Third, the laser weld width of the barrel body 1 is less than 1 mm, which is smaller than the existing lap weld width of 2 to 3 mm. When repainting the weld and heat-affected zone, the amount of paint used can be reduced, thereby reducing production costs.

[0041] Fourth, the problem of overlapping and excessive thickness of the weld at the curling is eliminated. The quality of the weld is not affected when the steel drum is curled, avoiding the phenomenon that the sealing weld is prone to cracking when the pressure is too high.

[0042] The production process of the conical barrel in this application has a significant energy-saving effect. The laser thermal energy melts the material of the welding part to form a strong weld with considerable toughness. Its tensile strength is equal to or greater than that of the parent material, so its strength is more than twice that of traditional welding, saving more than 85% of electricity.

[0043] It is relatively convenient to upgrade the existing conical barrel production line, accelerate the technological transformation of traditional industries, and relieve the worries of enterprise renewal. Since 85% of electricity is saved, more than 200,000 yuan in electricity bills can be saved each year, which is equivalent to the electricity bill saved in two to three years, and the investment in the laser welding machine can be recovered. Due to the excellent performance of laser welding with high strength and zero leakage, steel is saved, weight is reduced, and packaging reduction can be achieved.

[0044] The production process of the above-mentioned conical barrel can be further optimized and / or improved according to actual needs: Embodiment 5: As an optimization of the above embodiment, in step S6, the barrel cover 3 and the open cone barrel in step S5 are packaged by wrapping a film around the outside.

[0045] During use, a film is wrapped around the batches of barrel covers 3 and the outside of the open cone barrels in step S5 using a film wrapping machine, wherein the film wrapping machine is an existing well-known technology, such as MH-FG-2000A / B pallet wrapping film baler, so that the paint on the surface of the barrel cover 3 and the barrel body 1 can be protected to avoid scratches during transportation that affect the quality of the barrel cover 3 and the barrel body 1. At the same time, after wrapping the film, the barrel cover 3 and the barrel body 1 can be fixed separately to form a plurality of barrel covers 3 and barrel bodies 1 into a whole. When encountering bumpy roads during transportation, the stacked barrel covers 3 and the barrel bodies 1 can be prevented from falling and being damaged. It can also prevent rain, snow or impurities from entering the barrel body 1 and affecting the packaging bags and food that are subsequently packaged.

[0046] Embodiment 6: As an optimization of the above embodiment, as shown in the attached Figure 6 As shown, in step S6, four barrels formed by sequentially fitting together the open cone barrels in step S5 from bottom to top are placed on the upper side of the pallet 21 and then packaged by wrapping with film.

[0047] According to the requirements, the pallet 21 is an existing well-known technology, such as a wooden flat pallet. Four barrel groups or three barrel cover groups are placed on the upper side of each pallet 21. The four barrel groups and barrel cover groups are distributed in a 2*2 matrix. Each barrel group is composed of a number of open conical barrels that are sequentially mounted together from bottom to top. Each barrel group is composed of ten open conical barrels that are sequentially mounted together from bottom to top. In this way, there are forty open conical barrels on a pallet 21, which is convenient for statistics and management.

[0048] Embodiment 7: As an optimization of the above embodiment, as shown in the attached Figure 6 As shown, in step S6, the tray 21 is placed in a pit, and a lift 22 for lifting the tray 21 is provided in the pit.

[0049] According to the needs, the elevator 22 is an existing well-known technology, such as a fixed scissor-type lifting platform or a shallow pit four-column elevator disclosed in the Chinese patent document with announcement number CN220550933U. The pallet 21 is placed in the pit, so that a plurality of open cone barrels are sequentially assembled together from bottom to top and placed on the upper side of the pallet 21 in the pit. The center of gravity height of the barrel group can be lowered, thereby improving the safety of the multiple open cone barrels assembled together. At the same time, placing the open cone barrels in the pit can reduce labor intensity, thereby improving work efficiency. After forty open cone barrels are placed on the upper side of the pallet 21 in the pit, the operator controls the elevator 22, and the elevator 22 lifts the pallet 21 and then transfers it by a forklift. After the transfer of the pallet 21 is completed, a new pallet 21 is placed on the upper side of the elevator 22, and then the elevator 22 is reset. This reciprocating process is used to transfer the open cone barrels.

[0050] Embodiment 8: As an optimization of the above embodiment, in step S11, the length error and width error of the barrel body material are 0 to 0.5 mm, and the length error of the two diagonals of the barrel body material is not greater than 1 mm.

[0051] During the production process, this allows the two sides of the barrel body to be aligned with each other after being rolled into a circle. The two sides of the barrel body are welded together using a laser welding machine, which can ensure the welding strength of the barrel body weld and avoid cracking of the weld during cone expansion or use.

[0052] The above technical features respectively constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A conical barrel, characterized in that It includes a barrel body, a barrel bottom, a barrel cover and a closure. The barrel body is in a cone shape with a larger upper part and a smaller lower part. The outer side of the upper part of the barrel body bulges outward to form a first annular reinforcing rib. The inner side of the lower end of the barrel body and the outer side of the barrel bottom are sealed and fixed together. The upper end of the barrel body is folded outward to form a rolled tube with a circular cross-section. The rolled tube and the barrel cover are detachably fixed together through the closure.

2. The conical barrel according to claim 1, characterized in that The lower end of the barrel bottom bulges downward to form several circles of annular second reinforcing ribs, and the lower ends of the barrel bottom between two adjacent circles of second reinforcing ribs bulge downward to form third reinforcing ribs consistent with the radial direction of the barrel bottom. The lower end of each circle of second reinforcing ribs is evenly spaced along the circumference with several vertically penetrating air holes.

3. The conical barrel according to claim 2, characterized in that The outer side of the barrel bottom is bent to form an arc-shaped inner turning edge with the opening inward, and the lower end of the barrel body is expanded outward to form a conical outer turning edge with a larger upper part and a smaller lower part, and the outer turning edge and the inner turning edge are engaged with each other.

4. A process for producing a conical barrel according to any one of claims 1 to 3, characterized in that The steps include: S1, making the barrel body, including: S11, unwind and flatten the barrel material; S12, rolling the barrel body material into a round shape, and fixing two sides of the barrel body material close to each other together by laser welding to form a round barrel; S13, standing the round barrel upright and then expanding the barrel to form a cone barrel; S14, expanding the upper part of the cone barrel to form a first reinforcing rib, flanging the upper end of the cone barrel to form a rolled tube, and flanging the lower end of the cone barrel to form an outer flanging; S2, making the barrel bottom, including: S21, unroll and flatten; S22, adjusting the conveying direction and conveying length of the barrel bottom material; S23, forming air holes on the surface of the barrel bottom material by offset punching; S24, punching the surface of the barrel bottom material with the air permeable holes to form a circular barrel bottom material with a second reinforcing rib and a third reinforcing rib; S25, flanging the outer edge of the circular barrel bottom material to form an arc-shaped inner flanging with an opening inward; S3, making barrel cover, including: S31, unroll and flatten; S32, adjusting the conveying direction and conveying length of the barrel cover material; S33, punching the surface of the barrel cover material to form a round barrel cover; S4, fixing the outer side of the barrel bottom and the lower end of the barrel body together to form an open cone barrel; S5, spraying, drying and coding the weld of the open cone barrel in sequence; S6, packaging the barrel cover and the open cone barrel in step S5 respectively and storing them.

5. The production process of the conical barrel according to claim 4, characterized in that In step S6, the barrel cover and the open cone barrel in step S5 are packaged by wrapping a film around the outside.

6. The production process of the conical barrel according to claim 5, characterized in that In step S6, four barrels formed by sequentially fitting together the plurality of open cone barrels in step S5 from bottom to top are placed on the upper side of a pallet and then packaged by wrapping with film.

7. The production process of a conical barrel according to claim 6, characterized in that In step S6, the pallet is placed in a pit, and a lift for lifting the pallet is provided in the pit.

8. The production process of a conical barrel according to claim 4, 5, 6 or 7, characterized in that In step S11, the length error and width error of the barrel body material are 0 to 0.5 mm, and the length error of the two diagonals of the barrel body material is no more than 1 mm.

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