A draw frame can mechanism

Abstract

The utility model discloses a kind of stretcher tank withdrawal mechanisms, including punch, stretching mechanism, tank withdrawal mechanism, punch is set in the left side of stretching mechanism, tank withdrawal mechanism is set in the right end of stretching mechanism;The tank withdrawal mechanism further include mounting bracket, tank withdrawal rubber ring, the right end of the stretching ring in stretching mechanism is provided with the mounting bracket of quick installation and disassembly, tank withdrawal rubber ring that automatically discharges oil dirt is set on mounting bracket.The function of the utility model is to reduce the lubricating oil accumulation at the contact of tank withdrawal rubber ring and tank body, ensure that tank withdrawal rubber ring can normally push out tank body and unload;Shorten the time required for replacing tank withdrawal rubber ring, improve production efficiency;Laid out trapezoidal structure's rubber ring body, solve the vibration and indentation problem generated in tank bottom when high-speed processing handles SD330ML tank type, prolong the service life of rubber ring when producing this model tank body.

Description

Technical Field

[0001] This utility model belongs to the technical field of can ejection mechanism, and particularly relates to a can ejection mechanism for a stretching machine. Background Technology

[0002] In two-piece can production, the stretching machine is the core equipment for forming the can body. It uses immense pressure to plastically deform a round aluminum or steel billet (cup) within a mold, sequentially performing stretching and thinning processes to process the cup-shaped billet into a thin-walled, thick-bottomed, seamless can body. This equipment integrates precision molds, efficient lubrication, and a synchronous can ejection mechanism, ensuring accurate can dimensions, a smooth surface, and high production efficiency. This provides a qualified can body foundation for subsequent cleaning, printing, and necking / flanging processes.

[0003] In the prior art, such as the two-piece stretching mold for beverage cans disclosed in Chinese Patent (CN209139653U), there is a fixed plate. A bottom mold is fixed to one side of the fixed plate. A positioning rod is provided at one end of the bottom mold connected to the fixed plate. Slide rails are fixed at both ends of the fixed plate corresponding to the bottom mold. A first hydraulic rod is fixed to the fixed plate corresponding to the bottom mold. The first hydraulic rod is located between the two slide rails. A connecting plate is installed at the end of the first hydraulic rod away from the fixed plate. Slider blocks are fixed at both ends of the connecting plate. The slide rails are slidably connected to the sliders.

[0004] This method has the following drawbacks: First, when using a stripping ring to remove the stretched can from the punch, lubricating oil continuously accumulates on the inner surface of the stripping ring's rubber ring during the process. As the stretching machine operates at high speed, causing the inner diameter of the rubber ring to expand, this residual lubricating oil, combined with the rubber ring's expansion and deformation, can lead to slippage between the can and the rubber ring before the rubber ring reaches its service life and needs replacement. Second, after a period of use, the rubber ring on the stripping ring in this device deforms and expands, therefore, it needs to be replaced periodically to ensure that the rubber ring can be properly replaced. The rubber rings are often removed from the punch. The lack of a disassembly and installation mechanism on the peeling ring in this device makes it difficult for operators to quickly replace the rubber rings, increasing the time required for replacement and reducing production efficiency. Thirdly, in actual production, the stepped rubber rings will leave indentations at the bottom of the can when the production speed of SD500ML cans exceeds 200CPM. In severe cases, this can cause the can to crack, making the product fail to meet production requirements. Furthermore, when the stepped rubber rings are attached to the can, the air gaps created by the stepped structure will cause the punch to vibrate at high speed, reducing production efficiency.

[0005] Therefore, this utility model provides a can-removal mechanism for a stretching machine. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model discloses a can ejection mechanism for a stretching machine. This mechanism reduces lubricant buildup at the contact point between the ejection rubber ring and the can body, ensuring that the ejection rubber ring can be properly pushed out and removed from the can. It also shortens the time required to replace the ejection rubber ring, improving production efficiency. Furthermore, the trapezoidal structure of the rubber ring body solves the problems of vibration and indentation on the bottom of the can during high-speed processing of the SD330ML can, extending the service life of the rubber ring when producing this type of can.

[0007] To achieve the above technical effects, this utility model provides a can-removing mechanism for a stretching machine, including a punch, a stretching mechanism, and a can-removing mechanism. The punch is located on the left side of the stretching mechanism, and the can-removing mechanism is located on the right side of the stretching mechanism. The can-removing mechanism also includes a mounting frame and a can-removing rubber ring. The right end of the stretching ring in the stretching mechanism is provided with a quick-installation and disassembly mounting frame, and the can-removing rubber ring that automatically discharges oil is located on the mounting frame.

[0008] Preferably, the mounting bracket further includes a base plate, a cover plate, a mounting groove, and fixing bolts. The base plate is located at the right end of the tensioning mechanism, the cover plate is hinged to the cover plate, the mounting groove is located on the inner side of the cover plate, and the fixing bolts are located at the right end of the cover plate and are threadedly connected to the base plate.

[0009] Preferably, the surface of the base plate is provided with triangularly arranged limiting grooves.

[0010] Preferably, an oil storage tank is provided at the lower right end of the cover plate, and an oil-absorbing sponge is provided in the oil storage tank.

[0011] Preferably, the ejector ring further includes a ring body, a mounting shell, and a limiting protrusion. The ring body wraps around the right end of the mounting shell, and the left end surface of the mounting shell is provided with a limiting protrusion. The position of the limiting protrusion corresponds to the limiting groove on the base plate. The rear side of the mounting shell is also provided with a hole for the fixing bolt to pass through.

[0012] Preferably, the side of the rubber ring body is also provided with an oil guide grid and an oil guide ring groove. The oil guide grid is respectively arranged around the right end of the rubber ring body, the oil guide ring groove is arranged on the side of the rubber ring body, and an outlet is provided below the oil guide ring groove.

[0013] Preferably, the rubber ring body is provided with an inwardly tightening trapezoidal structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The mechanism is equipped with an oil guide grid, an oil guide ring groove, and an oil storage tank. The oil guide structure and groove on the can-removing rubber ring guide the oil out of the ring's surface and store it, reducing lubricant buildup at the contact point between the rubber ring and the can body, ensuring the rubber ring can be easily pushed out and removed from the can. An installation frame allows operators to quickly disassemble and replace the rubber ring, reducing the time required for replacement due to breakage and improving production efficiency. The trapezoidal structure of the rubber ring body solves the problems of vibration and indentation on the can bottom during high-speed processing of SD330ML cans. Furthermore, the thickened rubber ring body results in less deformation and a longer service life. Attached Figure Description

[0015] Figure 1 This is a front view of Embodiment 1 of this utility model; Figure 2 This is an isometric view of the internal structure of Embodiment 1 of this utility model; Figure 3 yes Figure 2 A partial schematic diagram of 'a' in the diagram; Figure 4 This is a right view of the can-removing mechanism in Embodiment 1 of this utility model; Figure 5 This is an isometric view of the can-removing mechanism in Embodiment 1 of this utility model; Figure 6 This is a right view of the ejector rubber ring in Embodiment 2 of this utility model; Figure 7 This is a left view of the ejector rubber ring in Embodiment 2 of this utility model; The attached diagram lists the components represented by each number as follows: 1. Punch; 2. Stretching mechanism; 3. Can ejection mechanism; 4. Stretching ring; 5. Mounting bracket; 6. Can ejection rubber ring; 7. Base plate; 8. Cover plate; 9. Mounting groove; 10. Fixing bolt; 11. Oil storage tank; 12. Oil-absorbing sponge; 13. Rubber ring body; 14. Mounting shell; 15. Limiting protrusion; 16. Oil guide grid; 17. Oil guide ring groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0017] like Figures 1 to 7 As shown The prior art in this embodiment has the following problems: The inventors have found the following defects in the prior art: 1. When the stretching machine runs at high speed, the inner diameter of the rubber ring expands. As the rubber ring expands and deforms, the lubricating oil will cause the tank to slip and the rubber ring to fail to be pushed out smoothly before the rubber ring reaches the end of its service life and needs to be replaced; 2. The peeling ring in this device lacks a disassembly and installation mechanism to allow the operator to quickly replace the rubber ring, which increases the time required to replace the rubber ring and reduces production efficiency; 3. The gap between the stepped rubber ring and the tank can cause the punch to vibrate when running at high speed, reducing production efficiency.

[0018] Therefore, the inventor provides a can-removing mechanism for a stretching machine, including a punch 1, a stretching mechanism 2, and a can-removing mechanism 3. The punch 1 is located on the left side of the stretching mechanism 2, and the can-removing mechanism 3 is located on the right side of the stretching mechanism 2. The can-removing mechanism 3 also includes a mounting frame 5 and a can-removing rubber ring 6. The right end of the stretching ring 4 in the stretching mechanism 2 is provided with a quick-installation and disassembly mounting frame 5, and the can-removing rubber ring 6, which automatically discharges oil, is located on the mounting frame 5.

[0019] Using the above scheme, the can-removing rubber ring 6 can be installed on the right end of the tension ring 4 through the mounting bracket 5. When the can at the front end of the punch 1 is stretched by the tensioning mechanism 2, the left end of the can at the front end of the punch 1 extends beyond the right end of the can-removing mechanism 3 to perform the bottom pressing action. After the bottom pressing is completed, the punch 1 retracts, and the left end of the can is blocked by the can-removing rubber ring 6, so that the can is blocked from the punch 1 and the can falls to complete the stretching and can-removing operation.

[0020] Furthermore, the mounting bracket 5 also includes a base plate 7, a cover plate 8, a mounting groove 9, and a fixing bolt 10. The base plate 7 is located at the right end of the tensioning mechanism 2. The cover plate 8 is hinged to the cover plate 8. The mounting groove 9 is located on the inner side of the cover plate 8. The fixing bolt 10 is located at the right end of the cover plate 8 and is threadedly connected to the base plate 7. The cover plate 8 can be fixed to the base plate 7 by fixing bolts 10. The mounting groove 9 is used to install the can-removing rubber ring 6 between the cover plate 8 and the base plate 7. When the fixing bolts 10 are installed on the base plate 7, the can-removing rubber ring 6 is clamped and fixed between the cover plate 8 and the base plate 7 by the mounting groove 9 on the cover plate 8. When it is necessary to remove and replace the can-removing rubber ring 6, simply remove the fixing bolts 10, open the cover plate 8, remove the old can-removing rubber ring 6, and install the new can-removing rubber ring 6 to complete the installation and replacement. In this way, the operator can quickly disassemble and replace the can-removing rubber ring 6, shorten the time required to replace the can-removing rubber ring 6, and improve production efficiency.

[0021] Furthermore, the surface of the base plate 7 is provided with triangularly arranged limiting grooves; Among them, the triangular arrangement of limiting grooves can provide limiting guidance for the operator when installing the can-removing rubber ring 6, making it convenient for the operator to quickly align and install the can-removing rubber ring 6. After the can-removing rubber ring 6 is installed, it can also limit the rotational displacement of the can-removing rubber ring 6 during high-speed operation.

[0022] Furthermore, an oil storage tank 11 is provided at the lower right end of the cover plate 8, and an oil-absorbing sponge 12 is provided in the oil storage tank 11. The oil storage tank 11 is equipped with an oil-absorbing sponge 12. When the lubricating oil on the surface of the tank flows down from the can-removing rubber ring 6, it flows into the oil storage tank 11 and is absorbed by the oil-absorbing sponge 12. When the can-removing rubber ring 6 is replaced, the oil storage tank 11 and the oil-absorbing sponge 12 receive and store the lubricating oil scraped off the can body by the can-removing rubber ring 6 during the can-removing process, preventing the lubricating oil from dripping into the inside of the equipment and causing pollution.

[0023] Furthermore, the can-removing rubber ring 6 also includes a rubber ring body 13, a mounting shell 14, and a limiting protrusion 15. The rubber ring body 13 wraps around the right end of the mounting shell 14, and the left end surface of the mounting shell 14 is provided with a limiting protrusion 15. The position of the limiting protrusion 15 corresponds to the limiting groove on the base plate 7. The rear side of the mounting shell 14 is also provided with a hole for the fixing bolt 10 to pass through. The mounting shell 14, through the pre-drilled holes for the fixing bolts 10 and the limiting protrusion 15 on the left end surface, allows the operator to quickly align the can-removing rubber ring 6 onto the positioning base plate 7 when installing the mounting shell 14. Then, the cover plate 8 is placed on top, the fixing bolts 10 are installed, and the side of the mounting shell 14 is pressed and fixed between the cover plate 8 and the base plate 7 through the mounting groove 9 on the cover plate 8 to complete the fixation.

[0024] Furthermore, the side of the rubber ring body 13 is also provided with an oil guide grid 16 and an oil guide ring groove 17. The oil guide grid 16 is respectively arranged around the right end of the rubber ring body 13, and the oil guide ring groove 17 is arranged on the side of the rubber ring body 13. An outlet is provided below the oil guide ring groove 17. When the front end of the ejector ring 6 contacts the tank body, the lubricating oil on the surface of the tank body gets onto the ring. The oil guide grid 16 on the ring body 13 guides the lubricating oil from the right end of the ejector ring 6 into the oil guide ring groove 17 on the side of the ring. The lubricating oil is guided into the oil guide ring groove 17 in the oil guide grid 16 due to capillary action. Then, under the influence of capillary action and gravity, the oil in the oil guide ring groove 17 gathers downward and is discharged into the oil storage tank 11 through the outlet below the oil guide ring groove 17. In this way, the oil guide structure and oil guide groove on the ejector ring 6 guide the oil out of the surface of the ejector ring 6 in a timely manner and store it, reducing the accumulation of lubricating oil at the contact point between the ejector ring 6 and the tank body, and ensuring that the ejector ring 6 can push the tank body out and unload normally. Example 2

[0025] like Figures 6 to 7 As shown Furthermore, the rubber ring body 13 is provided with an inwardly tightening trapezoidal structure; Among them, the rubber ring body 13 is changed from a stepped shape to an inwardly tightened trapezoidal structure. The thickness of the rubber ring body 13 is increased, which can effectively reduce the vibration and indentation problems that occur when processing SD330ML cans at high speed, reduce the vibration of the punch 1, and the deformation caused by the thickened rubber ring body 13 is smaller, resulting in a longer service life.

[0026] In summary, this mechanism is equipped with an oil guide grid 16, an oil guide ring groove 17, and an oil storage tank 11. Through the oil guiding structure and groove on the can-removing rubber ring 6, the oil is promptly guided out and stored from the surface of the rubber ring 6, reducing lubricant accumulation at the contact point between the rubber ring 6 and the can body, ensuring that the rubber ring 6 can be smoothly pushed out and removed from the can. An installation frame 5 is provided, allowing operators to quickly disassemble and replace the rubber ring 6, shortening the time required for replacement and improving production efficiency. The trapezoidal rubber ring body 13 solves the problems of vibration and indentation on the bottom of the can during high-speed processing of SD330ML cans. Furthermore, the thickened rubber ring body 13 results in less deformation and a longer service life.

[0027] The working principle of this utility model: When producing a standard tank, the cover plate 8 can be fixed to the base plate 7 using the fixing bolts 10. The mounting groove 9 is used to install the can-removing rubber ring 6 between the cover plate 8 and the base plate 7. When the fixing bolts 10 are installed on the base plate 7, the can-removing rubber ring 6 is clamped and fixed between the cover plate 8 and the base plate 7 through the mounting groove 9 on the cover plate 8. The mounting shell 14, through the holes reserved for the fixing bolts 10 and the limiting protrusion 15 on the left end surface, can provide the operator with a limiting guide function when installing the mounting shell 14. The triangularly arranged limiting grooves can provide the operator with a limiting guide function when installing the can-removing rubber ring 6, making it convenient for the operator to quickly align and install the can-removing rubber ring 6. After the can-removing rubber ring 6 is installed, it can also limit the rotational displacement of the can-removing rubber ring 6 during high-speed operation. Then, the cover plate 8 is covered, the fixing bolts 10 are installed, and the side of the mounting shell 14 is pressed and fixed between the cover plate 8 and the base plate 7 through the mounting groove 9 on the cover plate 8 to complete the fixation. After the can body at the front end of punch 1 is stretched by stretching mechanism 2, the left end of the can body at the front end of punch 1 extends beyond the right end of can retraction mechanism 3 to perform the bottom pressing action. After the bottom pressing is completed, punch 1 retracts, and the left end of the can body is blocked by can retraction rubber ring 6, causing the can body to be blocked from punch 1. The can body falls to complete the stretching and can retraction operation. When the front end of the ejector ring 6 contacts the tank body, the lubricating oil on the surface of the tank body is applied to the ring. The oil guide grid 16 on the ring body 13 then guides the lubricating oil from the right end of the ejector ring 6 into the oil guide ring groove 17 on the side of the ring. Due to capillary action, the lubricating oil is guided into the oil guide ring groove 17 within the oil guide grid 16. Then, under the influence of capillary action and gravity, the oil collects downwards within the oil guide ring groove 17 and is discharged into the oil storage tank 11 through the outlet below the oil guide ring groove 17. An oil-absorbing sponge 12 is installed inside the oil storage tank 11. When the lubricating oil on the surface of the can flows down from the can-removing rubber ring 6, it flows into the oil storage tank 11 and is absorbed by the oil-absorbing sponge 12. Until the can-removing rubber ring 6 is replaced, the oil storage tank 11 and the oil-absorbing sponge 12 collect and store the lubricating oil scraped off the can body by the can-removing rubber ring 6 during the can-removing process. In this way, the oil guiding structure and oil guiding groove on the can-removing rubber ring 6 guide and discharge the oil from the surface of the can-removing rubber ring 6 in time, reducing the accumulation of lubricating oil at the contact point between the can-removing rubber ring 6 and the can body, and ensuring that the can-removing rubber ring 6 can push the can body out and remove it normally. When it is necessary to remove and replace the can-removing rubber ring 6, simply remove the fixing bolt 10, open the cover plate 8, remove the old can-removing rubber ring 6, and install the new can-removing rubber ring 6 to complete the installation and replacement. In this way, the operator can quickly disassemble and replace the can-removing rubber ring 6, shorten the time required to replace the can-removing rubber ring 6, and improve production efficiency. When producing SD330ML cans, the can ejection ring 6 can be replaced with a model where the ring body 13 has a trapezoidal structure. After the improvement, the speed of the stretching machine can be increased from 200 CPM to 280 CPM. It can run continuously at 280 CPM for 168 hours, which reduces the vibration of the punch 1 and does not find any indentations on the bottom of the can. It can fully meet the usage requirements. In addition, the service life of the ejection ring 6 with this structure is longer. Compared with the stepped ejection ring 6 which needs to be replaced every 8 hours, the current ring can be replaced every 24 hours, which improves the service life, reduces the replacement frequency, and saves spare parts. This concludes the description of the working principle of this utility model.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A can-removing mechanism for a stretching machine, comprising a punch (1), a stretching mechanism (2), and a can-removing mechanism (3), wherein the punch (1) is disposed on the left side of the stretching mechanism (2), and the can-removing mechanism (3) is disposed on the right side of the stretching mechanism (2), characterized in that: The can-removing mechanism (3) also includes a mounting frame (5) and a can-removing rubber ring (6). The right end of the tension ring (4) in the tensioning mechanism (2) is provided with a quick-installation and disassembly mounting frame (5). The can-removing rubber ring (6) that automatically discharges oil is set on the mounting frame (5).

2. The can-removal mechanism for a stretching machine according to claim 1, characterized in that: The mounting bracket (5) further includes a base plate (7), a cover plate (8), a mounting groove (9), and a fixing bolt (10). The base plate (7) is located at the right end of the tensioning mechanism (2). The cover plate (8) is hinged to the cover plate (8). The mounting groove (9) is located on the inner side of the cover plate (8). The fixing bolt (10) is located at the right end of the cover plate (8) and is threadedly connected to the base plate (7).

3. The can-removal mechanism for a stretching machine according to claim 2, characterized in that: The surface of the base plate (7) is provided with triangularly arranged limiting grooves.

4. The can-removal mechanism for a stretching machine according to claim 2, characterized in that: An oil storage tank (11) is provided at the lower right end of the cover plate (8), and an oil-absorbing sponge (12) is provided in the oil storage tank (11).

5. The can-removal mechanism for a stretching machine according to claim 1, characterized in that: The aforementioned ejector ring (6) also includes a ring body (13), a mounting shell (14), and a limiting protrusion (15). The ring body (13) is wrapped around the right end of the mounting shell (14). The left end surface of the mounting shell (14) is provided with a limiting protrusion (15). The position of the limiting protrusion (15) corresponds to the limiting groove on the base plate (7). The rear side of the mounting shell (14) is also provided with a hole for the fixing bolt (10) to pass through.

6. The can-removal mechanism for a stretching machine according to claim 5, characterized in that: The side of the rubber ring body (13) is also provided with an oil guide grid (16) and an oil guide ring groove (17). The oil guide grid (16) is respectively arranged around the right end of the rubber ring body (13), and the oil guide ring groove (17) is arranged on the side of the rubber ring body (13). An outlet is provided below the oil guide ring groove (17).

7. The can-removal mechanism for a stretching machine according to claim 5, characterized in that: The rubber ring body (13) is provided with an inwardly tightening trapezoidal structure.

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