A square can forming device

By using a roller conveyor, a cylinder-driven lifting frame, and a scissor-type expansion mechanism, the efficiency bottleneck of existing square can forming devices has been solved, enabling continuous forming of metal cylinders and improving production efficiency and equipment utilization.

CN224525763UActive Publication Date: 2026-07-21WUXI BAOYINLAI PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI BAOYINLAI PACKAGING CO LTD
Filing Date
2025-07-14
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The existing square can forming equipment has an efficiency bottleneck in its operation process. Workers need to manually insert and remove the metal cylinder, which results in long equipment waiting time, frequent manual intervention, and increased labor intensity.

Method used

The system employs a roller conveyor in conjunction with a cylinder-driven lifting frame and a scissor-type expansion mechanism to achieve continuous conveying, positioning, forming, and unloading of metal cylinders. Photoelectric sensors and an integrated industrial control computer coordinate the orderly operation of each component, optimizing it for continuous production.

Benefits of technology

It enables continuous forming of metal cylinders, reduces manual intervention, and improves production efficiency and equipment utilization.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a square can forming device, including roller conveyor and two forming mould, the inner bottom fixed mounting of roller conveyor's frame has the lifting cylinder, the movable end fixed connection of lifting cylinder has the lifting frame, and lifting frame and the roller gap matching of roller conveyor, the both sides of lifting frame all are equipped with guide component, the top fixed connection of roller conveyor's frame has the door type frame, the top fixed mounting of door type frame has the expansion cylinder, in the utility model, through the roller conveyor conveying metal cylinder to the forming station, cooperation lifting cylinder drive's lifting frame realizes cylinder lifting feeding, utilizes the scissor -type expansion mechanism of integrated door type frame simultaneously and completes the quick expansion mould forming, forms " conveying - positioning - forming - unloading " continuous production, effectively solved the process interruption problem of traditional manual sleeve mould piece taking, will intermittent operation optimization for coherent production, promoted square can forming efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of square can forming technology, and in particular to a square can forming device. Background Technology

[0002] A square can forming device is a machine that uses high-pressure gas or liquid to expand and form a metal cylinder. It is mainly used to uniformly expand a welded circular metal cylinder (such as sheet metal or aluminum) by applying internal pressure, causing it to fit against the inner wall of a square or other irregularly shaped mold, thus forming a square can container. This equipment features high forming precision, no mechanical damage to the surface, and high production efficiency, and is widely used in metal packaging production in the food, chemical, and cosmetic industries.

[0003] The current operation of the can forming device suffers from an efficiency bottleneck: workers must manually insert metal cylinders into the forming mold, and after the mold expands to complete the can forming, they must manually remove the finished product and transfer it to the conveyor belt or stacking area before the next cylinder can be molded. This intermittent operation mode results in long equipment waiting times and frequent manual intervention, which not only restricts the production cycle but also increases labor intensity.

[0004] Therefore, improvements are proposed. Utility Model Content

[0005] This utility model is a square can forming device proposed to overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a square can forming device, comprising a roller conveyor and two forming molds, wherein a lifting cylinder is fixedly installed at the bottom of the frame of the roller conveyor, and a lifting frame is fixedly connected to the movable end of the lifting cylinder, and the gap between the lifting frame and the roller of the roller conveyor is matched, and guide components are installed on both sides of the lifting frame.

[0007] A gantry frame is fixedly connected to the top of the roller conveyor frame. An expansion cylinder is fixedly installed on the top of the gantry frame. The movable end of the expansion cylinder passes through the gantry frame and is fixedly connected to a movable block. Supports are slidably connected to both sides of the outer surface of the movable block, and the supports are fixedly installed on the inner top of the gantry frame. Two scissor assemblies are rotatably connected between the supports and the movable block. The movable ends of the two scissor assemblies are each equipped with a mounting seat, and the mounting seat is fixedly connected to the adjacent forming mold.

[0008] Furthermore, the lifting frame includes two crossbars, which are jointly and fixedly connected to multiple brackets. The bracket in the middle is fixedly installed on the top of the lifting cylinder, and the bracket is located in the gap between two adjacent rollers of the roller conveyor. This structural design allows the bracket to support the tank more stably and distribute the weight of the tank.

[0009] Furthermore, both of the guide components include guide rods, which are fixedly connected to the frame of the roller conveyor. A sliding sleeve is slidably fitted onto the outer surface of the guide rod, and the sliding sleeve is fixedly connected to the crossbar. Through the cooperation of the guide rod and the sliding sleeve, the movement trajectory of the lifting frame is strictly limited, effectively reducing lateral swaying during the lifting process and providing a more stable lifting environment for the tank.

[0010] Furthermore, both scissor lift assemblies include hollow connecting rods, with both ends of the hollow connecting rods rotatably connected to the movable block and the mounting base, respectively. Solid rods are rotatably connected to the inner walls of both sides of the hollow connecting rods, and the bottom of the solid rods is rotatably connected to the bracket. A slider is rotatably connected to the top of the solid rods, and a slide rail is slidably connected to one side of the outer surface of the slider. The slide rail is fixedly connected to the mounting base. Through the rotation and sliding cooperation of each component, the expansion range of the forming mold is controllable and the movement is stable, ensuring that the force on each part of the tank is uniform.

[0011] Furthermore, a photoelectric sensor is fixedly installed on one side of the top of the roller conveyor frame. The photoelectric sensor can quickly and accurately identify whether the tank has reached the designated forming position.

[0012] Furthermore, an industrial control computer is fixedly installed on one side of the outer surface of the gantry frame, and the industrial control computer is electrically connected to the photoelectric sensor, the lifting cylinder, the expansion cylinder, and the roller conveyor. As the control core of the entire device, the industrial control computer can coordinate the orderly operation of each component.

[0013] The beneficial effects of this utility model are:

[0014] In use, this square can forming device transports metal cylinders to the forming station via a roller conveyor. A lifting frame driven by a lifting cylinder is used to lift and load the cylinders. Simultaneously, a scissor-type expansion mechanism integrated on the gantry frame completes rapid mold expansion and forming, creating a continuous production process of "conveyance-positioning-forming-unloading." This effectively solves the problem of process interruptions caused by traditional manual mold-setting and part removal, optimizing intermittent operations into continuous production and improving the efficiency of square can forming. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 : A three-dimensional structural schematic diagram of this utility model;

[0017] Figure 2 : A three-dimensional structural diagram of the roller conveyor of this utility model;

[0018] Figure 3 : A three-dimensional structural diagram of the molding die of this utility model.

[0019] The attached figures are labeled as follows:

[0020] 1. Roller conveyor; 2. Bracket; 3. Industrial control computer; 4. Forming mold; 5. Gantry frame; 6. Expansion cylinder; 7. Sliding sleeve; 8. Crossbar; 9. Guide rod; 10. Lifting cylinder; 11. Assembly base; 12. Slide rail; 13. Solid rod; 14. Bracket; 15. Slider; 16. Movable block; 17. Hollow connecting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 3 As shown, a square can forming device is disclosed, including a roller conveyor 1 and two forming molds 4. The roller conveyor 1 enables continuous conveying of the can, reducing manual handling and improving production efficiency. A lifting cylinder 10 is fixedly installed at the bottom of the frame of the roller conveyor 1. A lifting frame is fixedly connected to the movable end of the lifting cylinder 10, and the gap between the lifting frame and the rollers of the roller conveyor 1 is matched. Guide components are installed on both sides of the lifting frame. The lifting frame includes two crossbars 8, and multiple brackets 2 are fixedly connected to the two crossbars 8. The bracket 2 located in the middle is fixedly installed on the top of the lifting cylinder 10, and the bracket 2 is located in the gap between two adjacent rollers of the roller conveyor 1. Both guide components include guide rods 9, and the guide rods 9 are fixedly connected to the frame of the roller conveyor 1. A sliding sleeve 7 is slidably sleeved on the outer surface of the guide rod 9, and the sliding sleeve 7 is fixedly connected to the crossbar 8. The sliding sleeve 7 slides along the guide rod 9 to ensure that the lifting frame moves vertically and avoids swaying or jamming.

[0023] A gantry frame 5 is fixedly connected to the top of the roller conveyor 1. An expansion cylinder 6 is fixedly installed on the top of the gantry frame 5. The movable end of the expansion cylinder 6 passes through the gantry frame 5 and is fixedly connected to a movable block 16. A bracket 14 is slidably connected to both sides of the outer surface of the movable block 16. The bracket 14 is fixedly installed on the inner top of the gantry frame 5. Two scissor assemblies are rotatably connected between the bracket 14 and the movable block 16. An assembly seat 11 is installed on the movable end of each of the two scissor assemblies, and the assembly seat 11 is fixedly connected to the adjacent forming mold 4. Each of the two scissor assemblies includes a hollow connecting rod 17. The hollow connecting rod 17 is rotatably connected to the movable block 16 and the mounting base 11 at both ends. A solid rod 13 is rotatably connected to the inner walls of both sides of the hollow connecting rod 17. The bottom of the solid rod 13 is rotatably connected to the bracket 14. A slider 15 is rotatably connected to the top of the solid rod 13. A slide rail 12 is slidably connected to one side of the outer surface of the slider 15. The slide rail 12 is fixedly connected to the mounting base 11. The solid rod 13 is rotatably connected to the hollow connecting rod 17, the slider 15, and the bracket 14 through a pin. The hollow connecting rod 17 is rotatably connected to the movable block 16 and the mounting base 11 through a pin.

[0024] A photoelectric sensor is fixedly installed on one side of the top of the roller conveyor 1 frame. The photoelectric sensor 21 is model OPB732WZ. An industrial control all-in-one computer 3 is fixedly installed on one side of the outer surface of the gantry frame 5. The industrial control all-in-one computer 3 is a multi-functional integrated device that integrates a computer host, display screen, touch screen, input device and various interfaces. It has industrial-grade durability, stability and reliability and is widely used in industrial control and automated production. It is applicable to this application. The industrial control all-in-one computer 3 is electrically connected to the photoelectric sensor, the lifting cylinder 10, the expansion cylinder 6 and the roller conveyor 1 to facilitate the control of the overall operation. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that this hardware structure improvement can achieve in combination with common knowledge.

[0025] Working Principle: During operation, the can to be formed is conveyed by roller conveyor 1. When the can moves to the forming station, a photoelectric sensor installed on one side of the top of the roller conveyor 1 detects the can and transmits a signal to the industrial control computer 3. The industrial control computer 3 then controls the roller conveyor 1 to stop running and simultaneously starts the lifting cylinder 10. The movable end of the lifting cylinder 10 extends upward, driving the lifting frame fixedly connected to it to rise. Multiple brackets 2 in the lifting frame pass through the gaps between the rollers of the roller conveyor 1, lifting the can and making it detach from the roller surface. During this process, the guide components on both sides of the lifting frame play a role. The sliding sleeve 7 slides along the guide rod 9 to ensure the stability of the lifting frame during the rising process and prevent the can from shaking.

[0026] After the tank is stably lifted, the industrial control computer 3 controls the expansion cylinder 6 at the top of the gantry frame 5 to start, and the movable end of the expansion cylinder 6 pushes the movable block 16 downward. Since the movable block 16 is slidably connected to the bracket 14, and there are two scissor assemblies rotatably connected between the bracket 14 and the movable block 16, the downward movement of the movable block 16 will cause the scissor assemblies to unfold. The hollow connecting rod 17 in the scissor assembly rotates relative to the solid rod 13, and the slider 15 at the top of the solid rod 13 slides along the slide rail 12 on the mounting base 11, so that the movable ends of the two scissor assemblies drive the mounting base 11 and the forming mold 4 fixedly connected to it to expand to both sides.

[0027] As the forming mold 4 expands, its outer surface contacts and applies force to the inner wall of the can, compressing the can into a square shape. After the can is formed, the industrial control computer 3 controls the movable end of the expansion cylinder 6 to retract, the movable block 16 moves upward, the scissor assembly folds, and the forming mold 4 is reset and detached from the can. Subsequently, the movable end of the lifting cylinder 10 retracts, the lifting frame descends, and the formed square can is placed back onto the roller conveyor 1. The industrial control computer 3 controls the roller conveyor 1 to resume operation, transporting the square can to the next process, completing one forming operation.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A square can forming apparatus comprising a roller conveyor (1) and two forming dies (4), characterized in that: A lifting cylinder (10) is fixedly installed at the bottom of the frame of the roller conveyor (1). The movable end of the lifting cylinder (10) is fixedly connected to a lifting frame, and the gap between the lifting frame and the roller of the roller conveyor (1) is matched. Guide components are installed on both sides of the lifting frame. A gantry frame (5) is fixedly connected to the top of the frame of the roller conveyor (1). An expansion cylinder (6) is fixedly installed on the top of the gantry frame (5). The movable end of the expansion cylinder (6) passes through the gantry frame (5) and is fixedly connected to a movable block (16). A bracket (14) is slidably connected to both sides of the outer surface of the movable block (16). The bracket (14) is fixedly installed on the inner top of the gantry frame (5). Two scissor assemblies are rotatably connected between the bracket (14) and the movable block (16). An assembly seat (11) is installed on the movable end of each of the two scissor assemblies. The assembly seat (11) is fixedly connected to the adjacent forming mold (4).

2. A square can forming device as claimed in claim 1, characterized in that: The lifting frame includes two crossbars (8), and the two crossbars (8) are fixedly connected to a plurality of brackets (2). The bracket (2) located in the middle is fixedly installed on the top of the lifting cylinder (10), and the bracket (2) is located in the gap between two adjacent rollers of the roller conveyor (1).

3. A square can forming apparatus as defined in claim 2, wherein: Both of the guide components include a guide rod (9), and the guide rod (9) is fixedly connected to the frame of the roller conveyor (1). A sliding sleeve (7) is slidably sleeved on the outer surface of the guide rod (9), and the sliding sleeve (7) is fixedly connected to the crossbar (8).

4. A square can forming apparatus as defined in claim 1, wherein: Both of the scissor lift assemblies include a hollow connecting rod (17), and the two ends of the hollow connecting rod (17) are rotatably connected to the movable block (16) and the mounting base (11), respectively. A solid rod (13) is rotatably connected to the inner walls of both sides of the hollow connecting rod (17), and the bottom of the solid rod (13) is rotatably connected to the bracket (14). A slider (15) is rotatably connected to the top of the solid rod (13), and a slide rail (12) is slidably connected to one side of the outer surface of the slider (15), and the slide rail (12) is fixedly connected to the mounting base (11).

5. A square can forming apparatus as defined in claim 1, wherein: A photoelectric sensor is fixedly installed on one side of the top of the frame of the roller conveyor (1).

6. A square can forming apparatus as defined in claim 5, wherein: An industrial control computer (3) is fixedly installed on one side of the outer surface of the gantry frame (5), and the industrial control computer (3) is electrically connected to the photoelectric sensor, the lifting cylinder (10), the expansion cylinder (6), and the roller conveyor (1).