Equipment that achieves high-speed and stable neck forming of cans through multiple repositioning

Abstract

A device for achieving high-speed and stable neck forming of cans through multiple repositioning, comprising a loading station and multiple groups of neck forming stations; the loading station comprises a loading turntable with a plurality of vacuum adsorption grooves evenly distributed on the circumference; and further comprising a stabilizing transition station embedded between the loading station and the neck forming station; the stabilizing transition station comprises a first and a second stabilizing turntable, both of which have a plurality of vacuum adsorption grooves evenly distributed on their circumferences; when the first stabilizing turntable rotates to connect the materials with the loading turntable, the can body passes through a first calibrated handover position from the vacuum adsorption groove of the loading turntable to the vacuum adsorption groove of the first stabilizing turntable; when the first stabilizing turntable rotates to connect the materials with the second stabilizing turntable, the can body passes through a second calibrated handover position from the vacuum adsorption groove of the first stabilizing turntable to the vacuum adsorption groove of the second stabilizing turntable. The present invention can be directly modularized on existing equipment and achieves high-speed production by ensuring the stability of the cans when they enter the neck forming mold.

Description

Technical Field

[0001] The present invention relates to the field of processing equipment for cans, and in particular to equipment for realizing high-speed and stable neck forming of cans through multiple repositioning. Background Art

[0002] With the development of society and the economy, the market demands increasingly higher production speeds and stability for manufacturing equipment. For example, in the metal packaging industry, multi-station neck forming equipment used in can production processes now generally requires production speeds of 3000+ CPM (Can Per Minute), or even 3400+ CPM. Therefore, the ability to achieve stable high-speed production is crucial to the fierce competition in this market.

[0003] The production of cans requires multiple processes, including cup punching, stretching, edge trimming, color printing, internal spraying, neck forming, etc. Figure 1 For cans after trimming, Figure 2 This is the can after neck forming. Production speed can be increased by increasing the number of machines used, such as the stretching machine used in the stretching process and the internal spraying machine used in the internal spraying process. However, the equipment used in the neck forming process is expensive and occupies a large area. Therefore, simply increasing the number of machines to increase production speed will lead to a significant increase in cost and occupy more floor space.

[0004] Nowadays, there are more types of cans on the market, and the height of the can body during neck forming (specifically including multiple forming steps, such as the solution disclosed in U.S. Patent US 9308570) is also higher than before. Previously, the common can shape on the market was 211 / 330ml, but now most of the cans produced are 211 / 500ml, 211 / 550ml, 211 / 568ml and other high-height cans.

[0005] Without changing the neck forming equipment, the processing of high-height cans requires higher and higher stability when feeding the cans. However, in the actual production process, it is found that the can height is inversely proportional to the stability of feeding the cans, that is, the higher the can height, the worse the stability when feeding the cans, and the more likely it is to cause can jamming. This is because: First, the faster the production speed, the shorter the time from loading the can to entering the neck forming, and therefore the shorter the time left for the can body to stabilize, which makes it difficult to stably and accurately position the can body during feeding processing and prone to shaking; second, the faster the production speed, the faster the speed of the feeding wheel increases, the greater the centrifugal force, the inertia of the can body increases, and at the same time, the positioning adsorption position offset caused by the high can height will cause the can body to jam. The force on the tank body is unbalanced, resulting in shaking during the can feeding process; third, without changing the existing structure of the neck forming equipment, the high tank height will lead to a smaller gap between the tank body and the mold and push plate assembly in the equipment. Therefore, once the tank body shakes, the tank body will randomly collide with the mold end face when entering the neck forming station, resulting in problems such as can falling and can jamming. Can jamming may damage the product, affect the production speed, and reduce the product yield. In severe cases, it may damage the equipment and cause shutdown, seriously affecting the continuity of production, and causing losses to the company in both equipment and production.

[0006] If high-speed can production without jamming is to be achieved by changing the neck forming equipment, adjustments need to be made to each station (usually the neck forming equipment has 14 stations), which at least includes changing the stroke of the cam in each station. Therefore, the workload involved is extremely large, time-consuming, labor-intensive and costly.

[0007] In summary, how to resolve the contradiction between ultra-high-speed production and can feeding stability without changing the existing neck forming equipment has become the subject to be studied and solved by the present invention. Summary of the Invention

[0008] The purpose of the present invention is to provide a device for realizing high-speed and stable neck forming of cans through multiple repositioning.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is:

[0010] A device for achieving high-speed and stable neck forming of cans through multiple repositioning, comprising a loading station and multiple groups of neck forming stations in order from front to back in the processing sequence of the cans;

[0011] The loading station includes a loading turntable, which is a star wheel with a plurality of vacuum adsorption grooves distributed on its circumference, and the vacuum adsorption grooves are arc-shaped and used to adsorb and position the can bodies of the cans;

[0012] It also includes at least one set of stable transition stations, which are embedded between the feeding station and the neck forming station, so that the feeding station, the stable transition station and the neck forming station are connected in sequence from front to back;

[0013] The stable transfer station includes a first stable turntable and a second stable turntable, the rotation axes of both of which are parallel to the rotation axis of the loading turntable; the first stable turntable and the second stable turntable are both star wheels, and a plurality of vacuum adsorption grooves are evenly distributed on the circumference of both;

[0014] When the first stable turntable and the loading turntable rotate to connect materials, the two opposite vacuum adsorption grooves on the two turntables jointly define a first calibration handover position, and the can body enters the vacuum adsorption groove of the first stable turntable from the vacuum adsorption groove of the loading turntable through the first calibration handover position;

[0015] When the first stable turntable and the second stable turntable rotate to connect materials, the two opposite vacuum adsorption grooves on the two jointly define a second calibration handover position, and the can body enters the vacuum adsorption groove of the second stable turntable from the vacuum adsorption groove of the first stable turntable through the second calibration handover position.

[0016] The relevant contents of the above technical solution are explained as follows:

[0017] 1. In the above solution, the loading station further includes a loading turntable, whose rotation axis is parallel to the rotation axis of the loading turntable; the loading turntable is a star wheel, and a plurality of the vacuum adsorption grooves are evenly distributed on its circumference;

[0018] When the loading turntable and the loading transfer disc rotate to load materials, the two opposite vacuum adsorption grooves on the two jointly define a circular intersection. The can body passes through the intersection from the vacuum adsorption groove of the loading turntable into the vacuum adsorption groove of the loading transfer disc, and the position of the can body is stabilized.

[0019] Since the structure of the loading station can adopt existing technology and is not the invention of this case, its principles and details are not described in detail in this case.

[0020] 2. In the above solution, the neck forming station includes a spindle assembly and a transfer assembly; the spindle assembly includes a forming spindle turntable, and the transfer assembly includes a forming turntable;

[0021] The rotating axes of the forming spindle turntable and the forming rotary turntable are parallel to the rotating axis of the second stable turntable; the forming spindle turntable and the forming rotary turntable are both star wheels, and a plurality of positioning grooves are distributed on the circumferential surface of the forming spindle turntable, and the positioning grooves are arc-shaped and used to position the can body of the can; a plurality of vacuum adsorption grooves are distributed on the circumferential surface of the forming rotary turntable;

[0022] When the second stable turntable and the forming spindle turntable rotate to receive the material, the vacuum adsorption groove on the former and the positioning groove on the latter jointly define a transfer position, and the can body passes through the transfer position from the vacuum adsorption groove of the second stable turntable to the positioning groove of the forming spindle turntable;

[0023] When the forming spindle turntable and the forming rotary disc rotate to receive the materials, the positioning grooves on the former and the vacuum adsorption grooves on the latter jointly define the transfer position, and the can body passes through the transfer position from the positioning grooves of the forming spindle turntable to the vacuum adsorption grooves of the forming rotary disc;

[0024] The neck forming stations are connected front to back to complete the neck forming of the can body in steps, and the finished product is discharged in the last battle.

[0025] 3. In the above solution, the spindle assembly of the neck forming station further includes multiple sets of mold assemblies and multiple sets of push plate assemblies;

[0026] The mold assembly and the push plate assembly are arranged in a one-to-one correspondence, and the two are arranged on both sides of the can body along the height direction of the can body. During processing, the push plate of the push plate assembly pushes the can body toward the mold assembly, and the mold of the latter's actuator component realizes the molding of the can body neck.

[0027] Since the structure of the neck forming station can adopt existing technology and is not the invention of this case, its principles and details are not described in detail in this case.

[0028] 4. In the above solution, multiple groups of stabilizing transfer stations are provided, each connected end-to-end from front to back, forming two calibrated transfer positions. This design allows the appropriate number of stabilizing transfer stations to be added based on the required can height and processing speed, ensuring precise positioning and stable transfer of cans as they enter the neck forming station.

[0029] 5. In the above solution, the structure of the second stabilizing turntable can be the same as that of the forming turntable.

[0030] The working principle and advantages of the present invention are as follows:

[0031] The present invention provides an equipment that can realize high-speed and stable neck forming of cans through multiple repositioning, including a loading station and multiple groups of neck forming stations; the loading station includes a loading turntable, and a plurality of vacuum adsorption grooves are evenly distributed on the circumferential surface; the stable transition station also includes a first stable turntable and a second stable turntable, and a plurality of vacuum adsorption grooves are evenly distributed on the circumferential surface of the two; when the first stable turntable and the loading turntable rotate to connect materials, the two opposite vacuum adsorption grooves on the two jointly define a first calibration handover position, and the can body enters the vacuum adsorption groove of the first stable turntable from the vacuum adsorption groove of the loading turntable through the first calibration handover position; when the first stable turntable and the second stable turntable rotate to connect materials, the two opposite vacuum adsorption grooves on the two jointly define a second calibration handover position, and the can body enters the vacuum adsorption groove of the second stable turntable from the vacuum adsorption groove of the first stable turntable through the second calibration handover position.

[0032] Compared to existing technologies, the present invention incorporates a stable transition station and adds two stabilizing turntables, thereby adding two calibration transfer stations. Each time a can enters the calibration transfer station, it undergoes a stable calibration, thereby increasing the total stabilization time and ultimately ensuring a sufficiently stable position when the can enters the neck forming station, preventing vibration. In other words, multiple can repositionings enable stable and reliable neck forming at high speeds, even at high can heights.

[0033] The modification cost of the present invention is low, and the modification can be achieved by adding at least two stable turntables with a star wheel structure; and the modification difficulty is low. The modular design of the stable transition station can be directly embedded between the loading station and the neck forming station of the existing equipment to complete the modification, which not only saves time and labor, but also has high precision after the equipment is assembled.

[0034] The present invention can ensure that the can stably enters the first station mold in the first group of neck forming stations, ensures the concentricity requirement between the can body and the mold, thereby ensuring the molding quality, liberating the limitation of production speed and improving production efficiency.

[0035] In summary, the present invention can be directly modularized on existing equipment and achieve high-speed production by ensuring the stability of the can when it enters the neck forming mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Attachment Figure 1 This is the can after trimming;

[0037] Attachment Figure 2 The can after the neck is formed;

[0038] Attachment Figure 3 A schematic diagram of the structure of an embodiment of the present invention Figure 1 (Top-down perspective);

[0039] Attachment Figure 4 A schematic diagram of the structure of an embodiment of the present invention Figure 2 (primary perspective);

[0040] Attachment Figure 5 for Figure 3 The enlarged view of point I in the middle;

[0041] Attachment Figure 6 A schematic diagram of the structure of the prior art Figure 1 (Top-down perspective);

[0042] Attachment Figure 7 A schematic diagram of the structure of the prior art Figure 2 (Primary perspective).

[0043] In the above figures: 0. Can body; 1. Loading turntable; 2. Loading carousel; 3. Vacuum suction tank; 4a. Transfer station; 4b. First calibration transfer station; 4c. Second calibration transfer station; 5. First stabilization turntable; 6. Second stabilization turntable; 7. Forming spindle turntable; 8. Forming carousel; 9. Positioning slot; 10. Transfer station; 11. Push plate; 12. Mold; A. Loading station; B. Stabilization transfer station; C. Neck forming station; d1. Gap; d2. Gap. DETAILED DESCRIPTION

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0045] Embodiment: The present invention will be clearly illustrated below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0046] The terms used herein are for describing specific embodiments only and are not intended to be limiting of the present invention. Singular forms such as "a," "the," "this," "this," and "the" as used herein also include plural forms.

[0047] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.

[0048] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct or indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0049] The terms “include”, “including”, “have”, etc. used in this document are open-ended terms, meaning including but not limited to.

[0050] Unless otherwise noted, the terms used herein generally have their ordinary meanings in the art, in the context of this application, and in the specific context. Certain terms used to describe this application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this application.

[0051] See attached Figures 3 to 7 As shown, a device for achieving high-speed and stable neck forming of cans through multiple repositioning includes a loading station A and multiple groups of neck forming stations C from front to back in the processing order of the cans.

[0052] The loading station 1 includes a loading turntable 1 and a loading rotary disc 2. The rotation axes of the two are parallel and both are star wheels. A plurality of vacuum adsorption grooves 3 are evenly distributed on the circumference of each. The vacuum adsorption grooves 3 are arc-shaped (preferably semicircular) and are used to adsorb and position the can bodies 0 of the cans. When the loading turntable 1 and the loading rotary disc 2 rotate to load materials, the two opposing vacuum adsorption grooves 3 on the two together define a circular intersection 4a. The can bodies 0 pass through this intersection 4a from the vacuum adsorption grooves 3 of the loading turntable 1 to the vacuum adsorption grooves 3 of the loading rotary disc 2, completing the initial position stabilization of the can bodies 0.

[0053] The structure of the loading station A can adopt existing technology and is not the invention of this case, so its principles and details are not described in detail in this case.

[0054] Among them, it also includes at least one group of stable transition stations B, which are embedded between the feeding station A and the neck forming station C, forming the feeding station A, the stable transition station B and the neck forming station C connected end to end.

[0055] The stable transition station B includes a first stable turntable 5 and a second stable turntable 6, both of which have rotating axes parallel to the rotating axis of the loading turntable 2; the first stable turntable 5 and the second stable turntable 6 are both star wheels, and a plurality of vacuum adsorption grooves 3 are evenly distributed on the circumferential surfaces of both.

[0056] When the first stabilizing turntable 5 and the loading turntable 2 rotate to connect materials, the two opposite vacuum adsorption grooves 3 on the two jointly define a circular first calibration handover position 4b, and the can body 0 passes through the first calibration handover position 4b from the vacuum adsorption groove 3 of the loading turntable 2 into the vacuum adsorption groove 3 of the first stabilizing turntable 5, and completes the initial position calibration and stabilization of the can body 0.

[0057] When the first stable turntable 5 and the second stable turntable 6 rotate to connect the materials, the two opposite vacuum adsorption grooves 3 on the two jointly define a circular second calibration handover position 4c, and the can body 0 passes through the second calibration handover position 4c from the vacuum adsorption groove 3 of the first stable turntable 5 to the vacuum adsorption groove 3 of the second stable turntable 6, and completes the re-position calibration and stabilization of the can body 0.

[0058] Among them, the handover position 4a completes the initial position stabilization of the can body 0, the first calibration handover position 4b completes the initial position calibration stabilization of the can body 0, and the second calibration handover position 4c completes the re-position calibration stabilization of the can body 0, thereby adding two more tank body repositionings to achieve the accurate and stable position of the can body 0 when it enters the neck forming station.

[0059] Preferably, multiple groups of stable transfer stations B can be provided, each connected end-to-end from front to back, forming two calibrated transfer positions. This design allows for the appropriate number of stable transfer stations B to be added based on the required can height and processing speed, ensuring precise positioning and stable transfer of the can body 0 as it enters the neck forming station C. This prevents can jamming, even if the high height of the can body 0 results in a very small gap d1 between it and the mold 12 and the gap d2 between the push plate 11.

[0060] Among them, the neck forming station C includes a spindle assembly and a transfer assembly; the spindle assembly includes a forming spindle turntable 7, and the transfer assembly includes a forming turntable 8.

[0061] The rotating axes of the forming spindle turntable 7 and the forming rotary disk 8 are parallel to the rotating axis of the second stable turntable 6; the forming spindle turntable 7 and the forming rotary disk 8 are both star wheels, and a plurality of positioning grooves 9 are distributed on the circumferential surface of the forming spindle turntable 7, and the positioning grooves 9 are arc-shaped (preferably semicircular), which are used to position the can body 0 of the can; a plurality of the vacuum adsorption grooves 3 are distributed on the circumferential surface of the forming rotary disk 8.

[0062] When the second stable turntable 6 and the forming spindle turntable 7 rotate to connect the materials, the vacuum adsorption groove 3 on the former and the positioning groove 9 on the latter jointly define a transfer position 10, and the can body 0 passes through the transfer position 10 from the vacuum adsorption groove 3 of the second stable turntable 6 into the positioning groove 9 of the forming spindle turntable 7.

[0063] When the forming spindle turntable 7 and the forming transfer disc 8 rotate to connect the materials, the positioning groove 9 on the former and the vacuum adsorption groove 3 on the latter jointly define the transfer position 10, and the can body 0 passes through the transfer position 10 from the positioning groove 9 of the forming spindle turntable 7 to the vacuum adsorption groove 3 of the forming transfer disc 8.

[0064] The spindle assembly of the neck forming station C also includes multiple sets (typically twelve) of mold assemblies and multiple sets (typically twelve) of push plate assemblies. These mold assemblies correspond to each other and are positioned on either side of the can body 0 along its height. During processing, the push plate 11, an actuator component of the push plate assembly, pushes the can body 0 toward the mold assembly, and the mold 12, an actuator component of the push plate assembly, forms the neck of the can body 0.

[0065] Each of the aforementioned neck forming stations C is connected in series, completing the neck forming of the can body 0 in stages, and finally discharging the finished product at the final station. Since the structure of the neck forming station C can be adapted from existing technology and is not the key invention of this application, its principles and details will not be elaborated upon in this application.

[0066] The structure of the second stabilizing turntable 6 may be the same as that of the forming turntable 8 .

[0067] Compared to existing technologies, the present invention incorporates a stable transition station and adds two stabilizing turntables, thereby adding two calibration transfer stations. Each time a can enters the calibration transfer station, it undergoes a stable calibration, thereby increasing the total stabilization time and ultimately ensuring a sufficiently stable position when the can enters the neck forming station, preventing vibration. In other words, multiple can repositionings enable stable and reliable neck forming at high speeds, even at high can heights.

[0068] The modification cost of the present invention is low, and the modification can be achieved by adding at least two stable turntables with a star wheel structure; and the modification difficulty is low. The modular design of the stable transition station can be directly embedded between the loading station and the neck forming station of the existing equipment to complete the modification, which not only saves time and labor, but also has high precision after the equipment is assembled.

[0069] The present invention can ensure that the can stably enters the first station mold in the first group of neck forming stations, ensures the concentricity requirement between the can body and the mold, thereby ensuring the molding quality, liberating the limitation of production speed and improving production efficiency.

[0070] In summary, the present invention can be directly modularized on existing equipment and achieve high-speed production by ensuring the stability of the can when it enters the neck forming mold.

[0071] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A device that achieves high-speed and stable neck forming of cans through multiple repositioning, comprising a loading station and multiple groups of neck forming stations in the order of can processing from front to back; The loading station includes a loading turntable, which is a star wheel with a plurality of vacuum adsorption grooves distributed on its circumference, and the vacuum adsorption grooves are arc-shaped and used to adsorb and position the can bodies of the cans; Its characteristics are: It also includes at least one set of stable transition stations, which are embedded between the feeding station and the neck forming station, so that the feeding station, the stable transition station and the neck forming station are connected in sequence from front to back; The stable transfer station includes a first stable turntable and a second stable turntable, the rotation axes of both of which are parallel to the rotation axis of the loading turntable; the first stable turntable and the second stable turntable are both star wheels, and a plurality of vacuum adsorption grooves are evenly distributed on the circumference of both; When the first stable turntable and the loading turntable rotate to connect materials, the two opposite vacuum adsorption grooves on the two turntables jointly define a first calibration handover position, and the can body enters the vacuum adsorption groove of the first stable turntable from the vacuum adsorption groove of the loading turntable through the first calibration handover position; When the first stable turntable and the second stable turntable rotate to connect the materials, the two opposite vacuum adsorption grooves on the two turntables jointly define a second calibration handover position, and the can body enters the vacuum adsorption groove of the second stable turntable from the vacuum adsorption groove of the first stable turntable through the second calibration handover position; The neck forming station includes a spindle assembly and a transfer assembly; the spindle assembly includes a forming spindle turntable, and the transfer assembly includes a forming turntable; The rotating axes of the forming spindle turntable and the forming rotary turntable are parallel to the rotating axis of the second stable turntable; the forming spindle turntable and the forming rotary turntable are both star wheels, and a plurality of positioning grooves are distributed on the circumferential surface of the forming spindle turntable, and the positioning grooves are arc-shaped and used to position the can body of the can; a plurality of vacuum adsorption grooves are distributed on the circumferential surface of the forming rotary turntable; When the second stable turntable and the forming spindle turntable rotate to receive the material, the vacuum adsorption groove on the former and the positioning groove on the latter jointly define a transfer position, and the can body passes through the transfer position from the vacuum adsorption groove of the second stable turntable to the positioning groove of the forming spindle turntable; When the forming spindle turntable and the forming transfer disc rotate to connect the materials, the positioning groove on the former and the vacuum adsorption groove on the latter jointly define the transfer position, and the can body enters the vacuum adsorption groove of the forming transfer disc from the positioning groove of the forming spindle turntable through the transfer position.

2. The device for realizing high-speed and stable neck forming of cans by multiple repositioning according to claim 1, characterized in that: The loading station also includes a loading turntable, whose rotation axis is parallel to the rotation axis of the loading turntable; the loading turntable is a star wheel, and a plurality of vacuum adsorption grooves are evenly distributed on its circumferential surface; When the loading turntable and the loading transfer disc rotate to load materials, the two opposite vacuum adsorption grooves on the two jointly define a circular intersection, and the can body enters the vacuum adsorption groove of the loading turntable from the vacuum adsorption groove of the loading transfer disc through the intersection.

3. The device for realizing high-speed and stable neck forming of cans by multiple repositioning according to claim 1, characterized in that: The spindle assembly of the neck forming station also includes multiple sets of mold assemblies and multiple sets of push plate assemblies; The mold assembly and the push plate assembly are arranged in a one-to-one correspondence, and the two are arranged on both sides of the tank body along the height direction of the tank body.

4. The device for realizing high-speed and stable neck forming of cans by multiple repositioning according to claim 1, characterized in that: There are multiple groups of stable transition stations, and each group of stable transition stations is connected end to end from front to back, and each group of stable transition stations forms two calibration handover positions.

5. The device for realizing high-speed and stable neck forming of cans by multiple repositioning according to claim 1, characterized in that: The structure of the second stabilizing turntable is the same as that of the forming turntable.

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