A can end trimming device for metal cans

Abstract

The utility model discloses a kind of can mouth trimming device for metal can, including workbench and support plate, the top of workbench is provided with conveyor belt, the top of conveyor belt is provided with material table, metal can is located on material table, the side of support plate is sequentially provided with base and carousel, the side of carousel is provided with the positioning cylinder for limiting the position of metal can, positioning cylinder rotates with carousel, the utility model is fixed in positioning cylinder after metal can by clamping block, motor rotates positioning cylinder by carousel, positioning cylinder then carries metal can sequentially through feeding station, standby material station, trimming station and discharging station, annular waste produced after trimming is then moved to waste material station with positioning cylinder and taken down, finally carousel drives positioning cylinder to return to feeding station again, four positioning cylinders repeat the above steps, to realize the continuous automatic trimming of metal can mouth, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal can mouth trimming, and in particular to a can mouth trimming device for metal cans. Background Technology

[0002] Food metal cans are packaging containers made of thin metal sheets (mainly tinplate or aluminum alloy). Due to their excellent sealing, pressure resistance and barrier properties, they are widely used for the long-term preservation of canned food, beverages, milk powder and other foods. The body and bottom of the metal can are formed by stamping in one piece. After stamping, excess material or burrs are often left on the edges. These burrs not only affect the appearance of the metal can, but may also threaten its sealing and safety. Therefore, after the metal can shell is stretched and formed, the can mouth must be trimmed in the height direction.

[0003] Chinese patent CN218016188U discloses a tea aluminum can mouth trimming device. The device uses a processing table, adjustment box, adjustment table, electric push rod, vertical plate, horizontal plate, connecting plate, first limiting plate, limiting box, turntable, convex shaft, moving plate, vertical rod, second limiting plate, drive motor, lead screw, sliding sleeve, trimming machine and controller to conveniently fix the tea aluminum can.

[0004] In the above solution, the bottom of the metal can is clamped by the motor driving the upper limit plate to move closer to the lower limit plate, and then the edge of the metal can is trimmed. Since this method only fixes the bottom of the can and fails to provide effective support for the can body, the stability of the can body is insufficient. During the edge trimming operation, the force can easily cause the can mouth to vibrate and shift, resulting in insufficient flatness of the can mouth after trimming. In addition, the loading, trimming and unloading of one metal can can be completed before the loading operation of another metal can can be carried out, resulting in low production efficiency. To address these issues, a can mouth trimming device for metal cans is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a can mouth trimming device for metal cans, in order to solve the problems mentioned in the background art, such as the force easily causing the can mouth to vibrate and shift, resulting in insufficient flatness of the can mouth after trimming, and the low production efficiency that can only be carried out after the loading, trimming and unloading of one metal can. The technical solution of this utility model provides a solution that is significantly different from the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A can-cutting device for metal cans includes a worktable and a support plate. A conveyor belt is installed above the worktable, and a material platform is installed above the conveyor belt. The metal can is located on the material platform. A base and a turntable are sequentially installed on one side of the support plate. A positioning mechanism for limiting the position of the metal can is installed on one side of the turntable. The positioning mechanism rotates with the turntable. A gear set for driving the positioning mechanism to rotate is installed inside the base. A cutting wheel is installed on one side of the base. A drive mechanism for driving the turntable and the cutting wheel to rotate is installed on the other side of the support plate. A loading and unloading mechanism for pushing the metal can onto the positioning mechanism and removing the metal can from the positioning mechanism is installed above the worktable. A waste cutting mechanism for cutting the waste material after the metal can is cut is installed below the worktable.

[0007] Preferably, the turntable is connected to the base via a bearing, the turntable has a knife groove on its side, the positioning mechanism includes a positioning cylinder, the positioning cylinder has at least three locking blocks on its side, a spring is provided between the positioning cylinder and the locking blocks, the spring pushes the locking blocks to fit against the inner wall of the metal can, and both ends of the locking blocks are provided with guide surfaces.

[0008] Preferably, the base has a transmission plate inside, which is a cross structure with four ends. Each of the four ends of the transmission plate has a rotating shaft. One end of the rotating shaft is connected to the transmission plate bearing, and the other end of the rotating shaft passes through the turntable and is connected to the positioning cylinder. The gear set includes an internal gear and an external gear. The internal gear is fixed on the base, and the external gear is installed on the rotating shaft. The internal gear and the external gear mesh.

[0009] Preferably, the driving mechanism is a motor, which is connected to the transmission plate shaft. A transmission shaft is provided on the side of the cutting wheel, and the transmission shaft is connected to the support plate through a bearing. The motor and the transmission shaft are connected through a pulley assembly, which includes a driving pulley and a driven pulley. The driving pulley and the driven pulley are connected by a belt. The driving pulley is connected to the motor shaft, and the driven pulley is mounted on the transmission shaft.

[0010] Preferably, the loading and unloading mechanism includes an electric telescopic rod, a connecting rod, a first guide post, and a second guide post. One end of the first guide post is provided with a rubber block, and the other end of the first guide post is connected to the connecting rod. The second guide post is a hollow tubular structure, and one end of the second guide post is provided with a suction cup. The other end of the second guide post passes through the connecting rod and is connected to the vacuum pump through an air pipe. The piston rod inside the electric telescopic rod is connected to the connecting rod.

[0011] Preferably, the side of the workbench is provided with a limit groove, and the bottom of the workbench is provided with a slide rail. The waste cutting mechanism includes a third guide post, a movable seat and a cutter. The two ends of the third guide post are respectively connected to the movable seat and the connecting rod. The upper end of the movable seat is connected to the slide rail through a slider, and the cutter is installed at one end of the movable seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by sequentially setting up a loading station, a waiting station, a trimming station, a unloading station, and a waste cutting station on one side of a turntable, achieves continuous automatic trimming of the metal can opening by the four positioning cylinders repeating the above steps. At the loading station, the electric telescopic rod pushes the metal can onto the positioning cylinder, and three clamping blocks simultaneously press against the inner wall of the metal can, fixing the metal can onto the positioning cylinder. Then, the motor drives the positioning cylinder to rotate via the turntable, causing the positioning cylinder to carry the metal can sequentially through the loading station, waiting station, trimming station, and unloading station. The annular waste material from the can opening after trimming is removed at the waste cutting station. Finally, the turntable drives the positioning cylinder back to the loading station, thus realizing continuous automatic trimming of the metal can opening.

[0013] 2. In this utility model, when the metal can is placed on the positioning cylinder, the spring pushes the locking block to move, so that the guide surface on the locking block fits against the inner wall of the metal can. The three locking blocks support the metal can body at the same time, which can avoid the can mouth vibration and displacement, resulting in insufficient flatness of the can mouth after trimming, thus improving the quality of the can mouth trimming. Attached Figure Description

[0014] Figure 1 A schematic diagram of the main structure of a can mouth trimming device used for metal cans; Figure 2 This is a schematic diagram of the cutter in a can-mouth trimming device used for metal cans; Figure 3 This is a schematic diagram of the base in a can mouth trimming device used for metal cans; Figure 4 For use in can mouth trimming devices for metal cans Figure 3 Enlarged view of part A; Figure 5 This is a schematic diagram of the trimming wheel in a trimming device for metal can mouths; Figure 6 This is a schematic diagram of the cutting groove in a can-mouth trimming device used for metal cans.

[0015] In the diagram: 1. Workbench; 101. Limiting groove; 102. Slide rail; 2. Support plate; 201. Base; 202. Internal gear; 203. External gear; 204. Rotating shaft; 3. Turntable; 301. Knife groove; 4. Conveyor belt; 401. Material platform; 5. Positioning cylinder; 501. Locking block; 502. Guide surface; 503. Spring; 6. Electric telescopic rod; 601. Connecting rod; 602. First guide post; 603. Second guide post; 604. Third guide post; 605. Movable seat; 606. Cutter; 7. Trimming wheel; 8. Motor; 801. Transmission plate; 802. Pulley assembly. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 In this utility model, a can mouth trimming device for metal cans includes a workbench 1 and a support plate 2. A conveyor belt 4 is arranged above the workbench 1, and a material platform 401 is arranged above the conveyor belt 4. The metal can is located on the material platform 401. A base 201 and a turntable 3 are arranged in sequence on one side of the support plate 2. A loading station, a waiting station, a trimming station, a unloading station and a waste cutting station are arranged in sequence on one side of the turntable 3.

[0020] The base 201 is fixed to the side of the support plate 2. The turntable 3 is connected to the base 201 through a bearing. The turntable 3 has a knife groove 301 on its side. The turntable 3 has at least four positioning cylinders 5 on its side. The positioning cylinders 5 have at least three locking blocks 501 on their sides. A spring 503 is provided between the positioning cylinders 5 and the locking blocks 501. The spring 503 pushes the locking blocks 501 to fit against the inner wall of the metal can. Anti-slip rubber pads are provided on the contact surface between the locking blocks 501 and the metal can. Guide surfaces 502 are provided at both ends of the locking blocks 501.

[0021] Example 1: Please refer to Figure 1-5 In this embodiment of the utility model, a can mouth trimming device for metal cans is provided. The base 201 is provided with a transmission plate 801. The transmission plate 801 has a cross structure with four ends. Each of the four ends of the transmission plate 801 is provided with a rotating shaft 204. One end of the rotating shaft 204 is connected to the bearing of the transmission plate 801, and the other end of the rotating shaft 204 passes through the turntable 3 and is connected to the positioning cylinder 5. The internal gear 202 is fixed on the base 201, and the external gear 203 is installed on the rotating shaft 204. The internal gear 202 and the external gear 203 mesh.

[0022] The motor 8 is shaft-connected to the transmission plate 801. The side of the cutting wheel 7 is provided with a transmission shaft. The transmission shaft is connected to the support plate 2 through a bearing. The motor 8 is connected to the transmission shaft through a pulley assembly 802. The pulley assembly 802 includes a driving pulley and a driven pulley. The driving pulley and the driven pulley are connected by a belt. The driving pulley is shaft-connected to the motor 8. The driven pulley is mounted on the transmission shaft.

[0023] After the motor 8 starts, it drives the transmission plate 801 and the drive wheel to rotate. The transmission plate 801 drives the turntable 3 to rotate through the rotating shaft 204. The drive wheel drives the driven wheel and the cutting wheel 7 to rotate in sequence through the belt. The diameter of the drive wheel is larger than that of the driven wheel, so that the speed of the cutting wheel 7 is higher than that of the transmission plate 801. When the turntable 3 drives the positioning cylinder 5 to revolve, the internal gear 202 drives the external gear 203 to rotate. The external gear 203 then drives the rotating shaft 204 and the positioning cylinder 5 to rotate. In addition, when the turntable 3 rotates, the motor 8 is in the starting state, and the cutting wheel 7 is also in the rotating state.

[0024] Above the workbench 1 are an electric telescopic rod 6, a first guide post 602, and a second guide post 603. One end of the first guide post 602 is equipped with a rubber block, and the other end of the first guide post 602 is connected to the connecting rod 601. The second guide post 603 is a hollow tubular structure. One end of the second guide post 603 is equipped with a suction cup, and the other end of the second guide post 603 passes through the connecting rod 601 and is connected to the vacuum pump through an air pipe. The piston rod inside the electric telescopic rod 6 is connected to the connecting rod 601.

[0025] The side of the workbench 1 is provided with a limit groove 101, and the bottom of the workbench 1 is provided with a slide rail 102. The bottom of the workbench 1 is provided with a third guide post 604, a movable seat 605 and a cutter 606. The two ends of the third guide post 604 are connected to the movable seat 605 and the connecting rod 601 respectively. The upper end of the movable seat 605 is connected to the slide rail 102 through a slider. The cutter 606 is installed at one end of the movable seat 605.

[0026] The first guide post 602, the second guide post 603, and the third guide post 604 are located on one side of the loading station, the unloading station, and the waste cutting station, respectively, and the electric telescopic rod 6 drives the first guide post 602, the second guide post 603, and the third guide post 604 to move simultaneously through the connecting rod 601.

[0027] When the conveyor belt 4 transports the metal can to the loading station, the first guide post 602 pushes the metal can so that when the metal can is fitted onto the positioning cylinder 5, the three clamping blocks 501 simultaneously squeeze the inner wall of the metal can, fixing the metal can onto the positioning cylinder 5. Then, the motor 8 drives the positioning cylinder 5 to revolve through the turntable 3. The positioning cylinder 5 carries the metal can through the loading station, the waiting station, the trimming station, and the unloading station in sequence. When the metal can is at the trimming station, the positioning cylinder 5 drives the metal can to rotate continuously, and the trimming wheel 7 is in a rotating state, thereby performing trimming operations on the mouth of the metal can. The annular waste material after trimming falls onto the rotating shaft 204 between the positioning cylinder 5 and the turntable 3. When the trimmed metal can is at the unloading station, the second guide post 603 moves so that the suction cup picks up the metal can. Then, the second guide post 603 resets and grabs the metal can into the material platform 401 on the conveyor belt 4. Finally, the suction cup is released, and the conveyor belt 4 transports the metal can to the subsequent processing steps. Then, turntable 3 continues to rotate, and the annular waste material from the can opening after the metal can is trimmed moves to the waste cutting station with the positioning cylinder 5. The annular waste material is in a downward state due to gravity. At this time, the third guide post 604 drives the cutter 606 to move towards the cutter groove 301, cutting the annular waste material into two arc strips. The two arc strips fall naturally due to gravity. Finally, turntable 3 drives the positioning cylinder 5 back to the loading station. Because the positioning cylinder 5 supports the metal can body during trimming, it avoids vibration and displacement of the can opening, which would result in insufficient flatness of the can opening after trimming, thus improving the quality of the can opening trimming.

[0028] The four positioning cylinders 5 repeat the above steps, thereby realizing continuous automatic edge cutting of the metal can opening and improving production efficiency.

[0029] The working principle of this utility model is as follows: After the metal can is placed on the positioning cylinder, the metal can is fixed on the positioning cylinder 5 by the simultaneous compression of the inner wall of the metal can by three clamping blocks 501. The motor 8 drives the positioning cylinder 5 to rotate through the turntable 3. The positioning cylinder 5 carries the metal can sequentially through the loading station, the waiting station, the trimming station, and the unloading station. After the metal can is trimmed at the trimming station, it is picked up by the suction cup at the unloading station and re-picked onto the conveyor belt 4. The annular waste generated after trimming moves with the positioning cylinder 5 to the waste cutting station. The annular waste is cut into two arc strips, which fall naturally under gravity to remove the annular waste. Finally, the turntable 3 drives the positioning cylinder 5 back to the loading station. The four positioning cylinders 5 repeat the above steps, thereby realizing continuous automatic trimming of the metal can opening and improving production efficiency.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A can mouth trimming device for metal cans, comprising a workbench (1) and a support plate (2), characterized in that: A conveyor belt (4) is provided above the workbench (1), and a material platform (401) is provided above the conveyor belt (4). The metal can is located on the material platform (401). A base (201) and a turntable (3) are provided on one side of the support plate (2). A positioning mechanism for limiting the position of the metal can is provided on one side of the turntable (3). The positioning mechanism rotates with the turntable (3). A gear set for driving the positioning mechanism to rotate is provided inside the base (201). A cutting wheel (7) is provided on one side of the base (201). A drive mechanism for driving the turntable (3) and the cutting wheel (7) to rotate is provided on the other side of the support plate (2). A loading and unloading mechanism for pushing the metal can onto the positioning mechanism and removing the metal can from the positioning mechanism is provided above the workbench (1). A waste cutting mechanism for cutting the waste after the metal can is cut is provided below the workbench (1).

2. The can mouth trimming device for metal cans according to claim 1, characterized in that: The turntable (3) is connected to the base (201) by a bearing. The turntable (3) has a knife groove (301) on its side. The positioning mechanism includes a positioning cylinder (5). The positioning cylinder (5) has at least three locking blocks (501) on its side. A spring (503) is provided between the positioning cylinder (5) and the locking blocks (501). The spring (503) pushes the locking blocks (501) to fit against the inner wall of the metal can. Both ends of the locking blocks (501) are provided with guide surfaces (502).

3. The can mouth trimming device for metal cans according to claim 1, characterized in that: The base (201) is equipped with a transmission plate (801). The transmission plate (801) has a cross structure with four ends. A rotating shaft (204) is provided on each of the four ends of the transmission plate (801). One end of the rotating shaft (204) is connected to the bearing of the transmission plate (801). The other end of the rotating shaft (204) passes through the turntable (3) and is connected to the positioning cylinder (5). The gear set includes an internal gear (202) and an external gear (203). The internal gear (202) is fixed on the base (201), and the external gear (203) is installed on the rotating shaft (204). The internal gear (202) and the external gear (203) mesh.

4. The can mouth trimming device for metal cans according to claim 1, characterized in that: The driving mechanism is a motor (8), which is connected to the transmission plate (801) shaft. The side of the cutting wheel (7) is provided with a transmission shaft, which is connected to the support plate (2) through a bearing. The motor (8) and the transmission shaft are connected through a pulley assembly (802). The pulley assembly (802) includes a driving wheel and a driven wheel, which are connected by a belt. The driving wheel is connected to the motor (8) shaft, and the driven wheel is mounted on the transmission shaft.

5. A can mouth trimming device for metal cans according to claim 1, characterized in that: The loading and unloading mechanism includes an electric telescopic rod (6), a connecting rod (601), a first guide post (602), and a second guide post (603). One end of the first guide post (602) is provided with a rubber block, and the other end of the first guide post (602) is connected to the connecting rod (601). The second guide post (603) is a hollow tubular structure. One end of the second guide post (603) is provided with a suction cup, and the other end of the second guide post (603) passes through the connecting rod (601) and is connected to the vacuum pump through an air pipe. The piston rod inside the electric telescopic rod (6) is connected to the connecting rod (601).

6. The can mouth trimming device for metal cans according to claim 1, characterized in that: The workbench (1) has a limit groove (101) on its side and a slide rail (102) on its underside. The waste cutting mechanism includes a third guide post (604), a movable seat (605) and a cutter (606). The two ends of the third guide post (604) are connected to the movable seat (605) and the connecting rod (601) respectively. The upper end of the movable seat (605) is connected to the slide rail (102) by a slider. The cutter (606) is installed at one end of the movable seat (605).

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