A thin metal cylinder chamfering device and chamfering method

Abstract

The present invention relates to the field of battery production, and in particular to a chamfering device and a chamfering method for thin metal cylinders, wherein the chamfering device comprises: a feeding line for loading products to be chamfered one by one; a unloading line for unloading chamfered products one by one; a lifting mechanism comprising a plurality of trays capable of lifting and moving; a transferring mechanism for moving products from the feeding line to the tray, and from the tray to the unloading line; a rounding mechanism located directly above the lifting mechanism, comprising a rotatable inner support mold, the inner support mold being used to extend into the inner cavity of the product and fix the product in an expanded state; a positioning mechanism located on one side of the inner support mold, comprising a horizontally movable positioning plate, the positioning plate being used to abut against the upper port of the product on the tray to form a limit, and the positioning plate being provided with an avoidance opening for allowing the inner support mold to pass through; a chamfering mechanism located on the other side of the inner support mold, comprising a turning tool, the turning tool being used to chamfer the upper port of the rotating product.

Description

Technical Field

[0001] The present invention relates to the field of battery production, and in particular to a chamfering device and a chamfering method for a thin metal cylinder. Background Art

[0002] In the battery production process, it is generally necessary to chamfer the inner corners of the battery shell to facilitate subsequent processing. In existing new energy vehicle batteries, the battery shell is made of thin metal, resulting in the need for chamfering the size of only a few tenths of a millimeter, which requires very high processing requirements.

[0003] The traditional chamfering process generally uses ordinary single-edged tools to chamfer rotating products through sliding cutting. However, on the one hand, the clamping jaws of conventional machine tools are difficult to apply to the battery shell, which can easily cause deformation of the shell; on the other hand, due to the concentricity of the chamfering head, the design of the tool blade and other issues, the chamfering uniformity and consistency of the product are seriously affected. In addition, due to frequent chamfering and grinding, the positioning of the tool will deviate, which requires a long time to debug the tool position, greatly affecting product quality and production capacity. In particular, it cannot meet the processing requirements of high-speed chamfering of batch products. Summary of the Invention

[0004] Based on the above problems, one purpose of the present invention is to provide a thin metal cylinder chamfering device to realize batch chamfering processing of thin metal cylindrical products, thereby improving production capacity and product quality.

[0005] Another object of the present invention is to provide a method for chamfering a thin metal cylinder, thereby changing the original machine tool chamfering process and improving processing efficiency and yield rate.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A thin metal cylinder chamfering device, comprising:

[0008] The feeding line is used to load the products to be chamfered one by one;

[0009] The blanking line is used to blank the chamfered products one by one;

[0010] A lifting mechanism comprising a plurality of pallets capable of being raised and lowered;

[0011] Transfer mechanism, used to move products from the feeding line to the pallet, and from the pallet to the unloading line;

[0012] The rounding mechanism is located directly above the lifting mechanism and includes a rotatable inner support mold that is used to extend into the inner cavity of the product and fix the product in the expanded state;

[0013] The positioning mechanism is located on one side of the inner support mold and includes a horizontally movable positioning plate, which is used to abut against the upper end of the product on the pallet to form a limit, and the positioning plate is provided with an avoidance opening to allow the inner support mold to pass through;

[0014] The chamfering mechanism is located on the other side of the inner support die and includes a turning tool used to chamfer the upper end of the rotating product.

[0015] Optionally, the transfer mechanism includes a slide that moves back and forth between the feeding line and the unloading line. The tray is located on one side of the slide. A lifting frame is installed on the slide through a lifting cylinder. A clamping cylinder is provided on the lifting frame. The claw part of the clamping cylinder is provided with a clamping block for clamping the product.

[0016] Optionally, multiple pallets are provided, each pallet is provided with a corresponding rounding mechanism, a positioning mechanism and a chamfering mechanism, multiple clamping cylinders are also provided, and the distance between two adjacent pallets is consistent with the distance between two adjacent clamping cylinders.

[0017] Optionally, the number of gripper cylinders is twice the number of pallets, and when the products on the feed line are grabbed and moved toward the pallets, the products on the pallets are grabbed and moved toward the feed line at the same time.

[0018] Optionally, the circle-supporting mechanism also includes a mold core, a mold-supporting cylinder and a first motor. The mold core is inserted into the inner support mold from above the inner support mold, and the mold core is driven by the mold-supporting cylinder to switch between the upper and lower positions. When the mold core is in the upper position, the inner support mold is tightened; when the mold core is in the lower position, the inner support mold expands, and the inner support mold is connected to the first motor.

[0019] Optionally, the positioning mechanism also includes a positioning cylinder and a guide rail arranged along the extension direction of the piston rod of the positioning cylinder. A push plate is provided on the piston rod of the positioning cylinder, a slider that cooperates with the guide rail is provided on the push plate, and the positioning plate is installed on the push plate.

[0020] Optionally, the chamfering mechanism also includes a second motor, the output shaft of the second motor is connected to the tool seat through a ball screw pair, the turning tool is installed on the tool seat, and the turning tool is driven to move up and down by the second motor to control the feed amount.

[0021] Optionally, the lifting mechanism includes a lifting electric cylinder arranged vertically upward, and the tray is fixed to the output end of the lifting electric cylinder.

[0022] Optionally, a plurality of boxes for containing products are provided on the feeding line and the unloading line.

[0023] In summary, the beneficial effect of the present invention is that the thin metal cylinder chamfering equipment is designed with a transfer mechanism, a lifting mechanism, a positioning mechanism, a rounding mechanism, and a chamfering mechanism for thin-walled cylindrical products, which corresponds to a series of processes for automatic transfer, lifting, positioning, rounding, and chamfering of products, and solves the problems of clamping deformation, positioning deviation, difficulty in processing, and low product quality of conventional lathes for thin-walled cylindrical products. The production cycle is fast, the chamfering effect is good and consistent, and the processing requirements are met.

[0024] On the other hand, the present invention adopts the following technical solutions:

[0025] A method for chamfering a thin metal cylinder, based on the above-mentioned thin metal cylinder chamfering device, comprises the following steps:

[0026] Step 1: The product to be chamfered is fed through the feeding line, and the transfer mechanism clamps the product and moves it to the tray of the lifting mechanism;

[0027] Step 2: The lifting mechanism lifts the product until the upper end of the product abuts against the positioning plate of the positioning mechanism. At this time, the inner support mold of the supporting mechanism expands, the product is fixed, the positioning plate withdraws, and the lifting mechanism is lowered;

[0028] Step 3: The inner support mold drives the product to rotate, and the turning tool of the chamfering mechanism chamfers the product;

[0029] Step 4: After chamfering is completed, the lifting mechanism holds the product and lowers it after tightening the inner support mold;

[0030] Step 5: The transfer mechanism grabs the product and moves it to the unloading line for output.

[0031] In summary, the beneficial effect of the present invention is that the thin metal cylinder chamfering method realizes the automation and efficient execution of a series of processes of thin-walled columnar products from loading, transferring, lifting, positioning, rounding, chamfering to unloading, with high chamfering accuracy, effectively improving the processing efficiency and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the overall structure of a thin metal cylinder chamfering device provided by an embodiment of the present invention;

[0033] Figure 2 This is a partial structural diagram of a thin metal cylinder chamfering device provided by an embodiment of the present invention;

[0034] Figure 3 Schematic diagram of the structure of the lifting mechanism in the thin metal cylinder chamfering device provided by an embodiment of the present invention;

[0035] Figure 4 This is a schematic structural diagram of a transfer mechanism in a thin metal cylinder chamfering device provided by an embodiment of the present invention;

[0036] Figure 5 This is a schematic structural diagram of a rounding mechanism in a thin metal cylinder chamfering device provided by an embodiment of the present invention;

[0037] Figure 6 yes Figure 5 Cross-section at AA;

[0038] Figure 7 Schematic diagram of the structure of the positioning mechanism in the thin metal cylinder chamfering device provided by an embodiment of the present invention;

[0039] Figure 8 It is a structural schematic diagram of the chamfering mechanism in the thin metal cylinder chamfering equipment provided by an embodiment of the present invention.

[0040] In the picture:

[0041] 1. Feeding line; 11. Cassette;

[0042] 2. Lifting mechanism; 21. Pallet; 22. Lifting electric cylinder;

[0043] 3. Transfer mechanism; 31. Slide; 32. Lifting cylinder; 33. Lifting frame; 34. Gripping cylinder; 35. Clamping block;

[0044] 4. Supporting mechanism; 41. Inner supporting mold; 42. Mold core; 43. Supporting mold cylinder; 44. First motor;

[0045] 5. Positioning mechanism; 51. Positioning plate; 52. Avoidance; 53. Positioning cylinder; 54. Guide rail; 55. Push plate; 56. Slider;

[0046] 6. Chamfering mechanism; 61. Turning tool; 62. Second motor; 63. Ball screw pair; 64. Tool holder;

[0047] 7. Blanking line;

[0048] 8. Battery case. DETAILED DESCRIPTION

[0049] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0050] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, indirect connections through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] In the description of the present invention, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, and may also include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. The technical solution of the present invention will be further explained below with reference to the accompanying drawings and through specific embodiments.

[0052] See also Figure 1 and Figure 2 As shown, this preferred embodiment provides a thin metal cylinder chamfering device, which is explained in detail by taking the chamfering of the battery shell of a new energy vehicle battery as an example. The chamfering device includes a feeding line 1, a lifting mechanism 2, a transfer mechanism 3, a rounding mechanism 4, a positioning mechanism 5, a chamfering mechanism 6, and a blanking line 7.

[0053] Among them, the feeding line 1 is used to load the battery shells 8 to be chamfered one by one, and the unloading line 7 is used to unload the battery shells 8 that have been chamfered one by one. Both the feeding line 1 and the unloading line 7 are provided with several boxes 11 for holding products, which facilitates the accurate positioning and sorting of each battery shell 8.

[0054] See Figure 3 The lifting mechanism 2 includes several trays 21 that can be lifted and moved and a lifting cylinder 22 arranged vertically upward. The tray 21 is fixed to the output end of the lifting cylinder 22 and is used to support the battery shell 8 to be lifted and moved.

[0055] See Figure 4The transfer mechanism 3 is used to move the battery shell 8 from the feeding line 1 to the tray 21, and to move the battery shell 8 from the tray 21 to the unloading line 7. According to the action requirements, the transfer mechanism 3 here specifically includes a slide 31 that moves back and forth between the feeding line 1 and the unloading line 7. The tray 21 is located on one side of the slide 31. A lifting frame 33 is installed on the slide 31 through a lifting cylinder 32. A clamping cylinder 34 is provided on the lifting frame 33. The claw of the clamping cylinder 34 is provided with a clamping block 35 for clamping the battery shell 8, thereby clamping the battery shell 8 from the cassette 11 on the feeding line 1. After lifting, translation, lowering, and loosening, the battery shell 8 is placed on the tray 21. After lifting, translation, lowering, and loosening from the tray 21, the battery shell 8 is placed on the unloading line 7.

[0056] Preferably, multiple trays 21 are provided to form multiple workstations that can be processed simultaneously. Each tray 21 is correspondingly provided with a rounding mechanism 4, a positioning mechanism 5 and a chamfering mechanism 6. Multiple clamping cylinders 34 are also provided. The distance between two adjacent trays 21 is consistent with the distance between two adjacent clamping cylinders 34, so that multiple battery shells 8 can be transferred at the same time.

[0057] Furthermore, the number of the gripper cylinders 34 is twice the number of the trays 21. When the battery shells 8 on the feed line 1 are grabbed and moved toward the tray 21, the battery shells 8 on the tray 21 are simultaneously grabbed and moved toward the lower feed line 7, thereby improving the operation efficiency and reducing the repeated actions of the transfer mechanism 3.

[0058] See Figure 5 and Figure 6 The rounding mechanism 4 is located directly above the lifting mechanism 2, and includes a rotatable inner support mold 41. The inner support mold 41 is used to extend into the inner cavity of the battery shell 8 and fix the battery shell 8 in the expanded state. In view of the thin-walled battery shell 8, simple transfer can be carried out by gently clamping. If it needs to be tightened to drive rotation, the clamping cannot meet the requirements. Excessive clamping will cause the battery shell 8 to deform. Therefore, the use of internal support can achieve reliable clamping.

[0059] Specifically, the rounding mechanism 4 also includes a mold core 42, a mold supporting cylinder 43 and a first motor 44. The mold core 42 is inserted into the inner support mold 41 from above the inner support mold 41, and the mold supporting cylinder 43 drives the mold core 42 to switch between the upper position and the lower position. When the mold core 42 is in the upper position, the inner support mold 41 is tightened; when the mold core 42 is in the lower position, the inner support mold 41 expands, and the inner support mold 41 is connected to the first motor 44 in transmission, thereby meeting the requirements of clamping the battery shell 8 and driving the battery shell 8 to rotate.

[0060] See Figure 7The positioning mechanism 5 is located on one side of the inner support mold 41 and includes a horizontally movable positioning plate 51. The positioning plate 51 is used to abut against the upper end of the battery shell 8 on the tray 21 to form a limit, and is provided with an escape 52 to allow the inner support mold 41 to pass through. Thus, the positioning plate 51 limits the position of the lifted battery shell 8, thereby determining the reference surface when chamfering and ensuring positioning accuracy. After positioning is completed, it can be removed without interfering with the rotation of the battery shell 8.

[0061] Specifically, the positioning mechanism 5 also includes a positioning cylinder 53 and a guide rail 54 arranged along the extension direction of the piston rod of the positioning cylinder 53. A push plate 55 is provided on the piston rod of the positioning cylinder 53, and a slider 56 is provided on the push plate 55 to cooperate with the guide rail 54. The positioning plate 51 is installed on the push plate 55, thereby realizing the reciprocating movement of the positioning plate 51.

[0062] See Figure 8 The chamfering mechanism 6 is located on the other side of the inner support mold 41 and includes a turning tool 61. The turning tool 61 is used to chamfer the upper port of the rotating battery shell 8. It should be noted that the inner support mold 41 is recessed at the corresponding chamfering position, which will not affect the chamfering of the turning tool 61.

[0063] Specifically, the chamfering mechanism 6 also includes a second motor 62, the output shaft of the second motor 62 is connected to the tool holder 64 through a ball screw pair 63, and the turning tool 61 is installed on the tool holder 64. The turning tool 61 is driven by the second motor 62 to move up and down, thereby controlling the feed amount.

[0064] Preferably, the feeding line 1, the unloading line 7 and the tray 21 are all located on the same vertical plane and form a processing line. In this embodiment, two processing lines are set up as an example. The transfer mechanism 3 is located between the two processing lines and simultaneously transfers the battery shells 8 on the two processing lines, thereby improving processing efficiency.

[0065] Therefore, the thin metal cylinder chamfering equipment is designed with a transfer mechanism 3, a lifting mechanism 2, a positioning mechanism 5, a rounding mechanism 4, and a chamfering mechanism 6 for the thin-walled cylindrical battery shell 8, which corresponds to a series of processes of automatic transfer, lifting, positioning, rounding, and chamfering of the battery shell 8, solving the problems of clamping deformation, positioning deviation, difficulty in processing, and low quality of the thin-walled cylindrical battery shell 8 on conventional lathes. The production cycle is fast, the chamfering effect is good and consistent, and the processing requirements are met.

[0066] On this basis, this embodiment further provides a method for chamfering a thin metal cylinder, based on the above-mentioned thin metal cylinder chamfering device, comprising the following steps:

[0067] Step 1: The battery shell 8 to be chamfered is fed through the feeding line 1, and the transfer mechanism 3 clamps the battery shell 8 and moves it to the tray 21 of the lifting mechanism 2;

[0068] Step 2: The lifting mechanism 2 lifts the battery shell 8 until the upper end of the battery shell 8 abuts against the positioning plate 51 of the positioning mechanism 5. At this time, the inner support mold 41 of the supporting mechanism 4 expands, the battery shell 8 is tightened and fixed, the positioning plate 51 withdraws, and the lifting mechanism 2 is lowered;

[0069] Step 3: The inner support mold 41 drives the battery shell 8 to rotate, and the turning tool 61 of the chamfering mechanism 6 chamfers the battery shell 8;

[0070] Step 4: After chamfering is completed, the lifting mechanism 2 holds the battery shell 8 and lowers after the inner support mold 41 is tightened;

[0071] Step 5: The transfer mechanism 3 grips the battery shell 8 and moves it to the unloading line 7 for output.

[0072] In addition, in order to improve the production rhythm, when the previous group of motor shells are rising and chamfering, the next group of motor shells can be clamped and prepared at the same time, so that chamfering can be carried out continuously after the chamfering of the previous group of motor shells is completed.

[0073] This embodiment provides a beat analysis table, see the table below for details:

[0074]

[0075] It can be seen that at this rhythm, it only takes 8 seconds for a battery shell 8 to be loaded and unloaded. If eight workstations are working at the same time, the number of chamfered battery shells 8 can reach 50 to 60 per minute. Eight in and eight out can be compatible with a variety of products, and rapid mold change can be achieved at the same time, with obvious advantages in production efficiency.

[0076] Therefore, this thin metal cylinder chamfering method can realize the automation and efficient execution of a series of processes of thin-walled cylindrical products from loading, transferring, lifting, positioning, supporting rounding, chamfering to unloading. The chamfering accuracy is high and can reach within 0.05mm, which effectively improves the processing efficiency and yield rate.

[0077] The above embodiments merely illustrate the basic principles and features of the present invention and are not intended to be limiting. Various modifications and variations may be made to the present invention without departing from the spirit and scope of the present invention. Such modifications and variations are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin metal cylinder chamfering device, characterized in that: include: A feeding line (1) is used to feed the products to be chamfered one by one; The blanking line (7) is used to blank the chamfered products one by one; A lifting mechanism (2) comprising a plurality of trays (21) capable of being lifted and lowered; A transfer mechanism (3) for transferring products from the feeding line (1) to the tray (21), and for transferring products from the tray (21) to the unloading line (7); A rounding mechanism (4) is located directly above the lifting mechanism (2) and includes a rotatable inner supporting mold (41), wherein the inner supporting mold (41) is used to extend into the inner cavity of the product and fix the product in an expanded state; A positioning mechanism (5) is located on one side of the inner support mold (41), comprising a positioning plate (51) capable of horizontal movement, the positioning plate (51) being used to abut against the upper end of the product on the tray (21) to form a limit, and the positioning plate (51) is provided with an avoidance opening (52) allowing the inner support mold (41) to pass through; The chamfering mechanism (6) is located on the other side of the inner support die (41) and comprises a turning tool (61). The turning tool (61) is used to chamfer the upper end of the rotating product.

2. The thin metal cylinder chamfering device according to claim 1, characterized in that: The transfer mechanism (3) includes a slide (31) that moves back and forth between the feeding line (1) and the unloading line (7), the tray (21) is located on one side of the slide (31), a lifting frame (33) is installed on the slide (31) through a lifting cylinder (32), a clamping cylinder (34) is provided on the lifting frame (33), and the claw part of the clamping cylinder (34) is provided with a clamping block (35) for clamping the product.

3. The thin metal cylinder chamfering device according to claim 2, characterized in that: There are multiple trays (21), each of which is provided with a corresponding rounding mechanism (4), a positioning mechanism (5) and a chamfering mechanism (6). There are also multiple clamping cylinders (34), and the spacing between two adjacent trays (21) is consistent with the spacing between two adjacent clamping cylinders (34).

4. The thin metal cylinder chamfering device according to claim 3, characterized in that: The number of the gripper cylinders (34) is twice the number of the trays (21). When the products on the feeding line (1) are grabbed and moved toward the trays (21), the products on the trays (21) are grabbed and moved toward the unloading line (7) at the same time.

5. The thin metal cylinder chamfering device according to claim 1, characterized in that: The circle supporting mechanism (4) further comprises a mold core (42), a mold supporting cylinder (43) and a first motor (44); the mold core (42) is inserted into the inner supporting mold (41) from above the inner supporting mold (41), and the mold supporting cylinder (43) drives the mold core (42) to switch between an upper position and a lower position; when the mold core (42) is in the upper position, the inner supporting mold (41) is tightened; when the mold core (42) is in the lower position, the inner supporting mold (41) expands, and the inner supporting mold (41) is connected to the first motor (44) in a transmission manner.

6. The thin metal cylinder chamfering device according to claim 1, characterized in that: The positioning mechanism (5) further comprises a positioning cylinder (53) and a guide rail (54) arranged along the extending direction of the piston rod of the positioning cylinder (53); a push plate (55) is provided on the piston rod of the positioning cylinder (53); a slider (56) is provided on the push plate (55) and cooperates with the guide rail (54); and the positioning plate (51) is mounted on the push plate (55).

7. The thin metal cylinder chamfering device according to claim 1, characterized in that: The chamfering mechanism (6) further includes a second motor (62), the output shaft of the second motor (62) being connected to a tool holder (64) via a ball screw pair (63), the turning tool (61) being mounted on the tool holder (64), and the turning tool (61) being driven by the second motor (62) to move up and down, thereby controlling the feed rate.

8. The thin metal cylinder chamfering device according to claim 1, characterized in that: The lifting mechanism (2) comprises a lifting electric cylinder (22) arranged vertically upward, and the tray (21) is fixed to the output end of the lifting electric cylinder (22).

9. The thin metal cylinder chamfering device according to claim 1, characterized in that: The feeding line (1) and the unloading line (7) are both provided with a plurality of boxes (11) for containing products.

10. A method for chamfering a thin metal cylinder, based on the thin metal cylinder chamfering device according to any one of claims 1 to 9, characterized in that: Including steps: Step 1: The product to be chamfered is input through the feeding line (1), and the transfer mechanism (3) clamps the product and moves it to the tray (21) of the lifting mechanism (2); Step 2: The lifting mechanism (2) lifts the product until the upper end of the product abuts against the positioning plate (51) of the positioning mechanism (5). At this time, the inner support mold (41) of the supporting mechanism (4) expands, the product is fixed, the positioning plate (51) withdraws, and the lifting mechanism (2) is lowered; Step 3: The inner support mold (41) drives the product to rotate, and the turning tool (61) of the chamfering mechanism (6) chamfers the product; Step 4: After the chamfering is completed, the lifting mechanism (2) holds the product and lowers it after the inner support mold (41) is tightened; Step 5: The transfer mechanism (3) grabs the product and moves it to the unloading line (7) for output.

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