Coating mold capable of automatically adjusting gasket

Abstract

The utility model discloses a coating mould capable of automatically adjusting a gasket, which comprises an upper mould, a lower mould and an actuating mechanism, the gasket is arranged between the upper mould and the lower mould to form a discharging channel, the upper mould is fixedly connected with the lower mould through a plurality of fasteners, a feeding channel is arranged at one side and the middle part of the lower mould, and the upper mould is fixedly connected with the lower mould through a plurality of fasteners. A containing cavity communicated with the feeding channel is formed in the lower die, backflow channels are formed in the positions, at the two ends of the containing cavity, of the upper die, the die is provided with a gasket fine adjustment device used for fine adjustment of a gasket and provided with a digital display dial indicator, the adjusting amount of the gasket can be detected, and after the die is ground, the positions of the two ends of the gasket can be accurately adjusted through the adjusting device.

Description

Technical Field

[0001] The utility model relates to the technical field of slit extrusion coating, in particular to a lithium electrode sheet coating die. Background Art

[0002] A key process in the manufacturing process of lithium batteries is to coat the cathode and anode slurries on the surface of the current collector. In the existing coating mold, the gasket between the upper and lower molds is positioned by internal positioning pins. When the mold is repaired after its service life, the original gasket size does not match the die head, or the gasket is adjusted manually after the positioning pins are removed. The installation is often skewed, making it difficult to make the first piece of coating, or causing abnormalities such as scraping, affecting production efficiency and yield. To this end, we provide a coating mold that can automatically adjust the gasket to solve the above problems. Utility Model Content

[0003] The utility model aims to make up for the deficiencies of the prior art and provides a coating die capable of automatically adjusting a gasket.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coating mold with automatically adjustable gaskets, comprising an upper mold, a lower mold and an actuator, a gasket is installed between the upper mold and the lower mold to form a discharge channel, the upper mold is fixedly connected to the lower mold by multiple fasteners, a feed channel is arranged on one side and the middle of the lower mold, a cavity connected to the feed channel is arranged on the lower mold, a reflux channel is arranged at both ends of the cavity on the upper mold, a gasket fine-tuning device for fine-tuning the gasket is arranged on the rear side of the upper mold and the lower mold, and a digital micrometer for detecting the gasket adjustment amount is installed on one side of the gasket fine-tuning device.

[0005] More specifically, the gasket fine-tuning device includes a mounting bracket fixedly connected to the upper mold or the lower mold, a servo electric cylinder is fixedly mounted on the mounting bracket, the servo electric cylinder has an actuator end that can be extended forward and backward, the actuator end is connected to a connecting piece, and the connecting piece is connected to the gasket.

[0006] More specifically, the connecting member is provided with an electric cylinder connection hole, a micrometer installation hole and a gasket connection hole.

[0007] More specifically, the gasket is provided with a lug portion connected to the gasket fine-tuning device, and the lug portion is provided with a pin hole.

[0008] More specifically, the gasket is connected to the connecting member via a pin.

[0009] More specifically, the upper mold and the rear side of the lower mold are connected by a hinge, and the mold can be opened and cleaned online.

[0010] More specifically, a back alignment block and a lateral alignment block are provided on one side of the upper die and the lower die to prevent the die head from being installed crookedly.

[0011] More specifically, there are two groups of gasket fine-tuning devices, which are symmetrically installed on the left and right sides of the feed channel.

[0012] Compared with the prior art, the lithium battery gap coating mold has the following beneficial effects: the utility model adopts the gasket fine-tuning device. When the electric cylinder is working, the gasket is moved back and forth through the connecting part to fine-tune the gasket position, and the adjustment amount can be accurately read through the digital micrometer, which greatly improves the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the actuator of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the gasket fine-tuning device of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the connecting piece of the utility model. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figures 1 to 5 As shown, an embodiment of a coating mold with automatically adjustable gaskets includes an upper mold 1, a lower mold 2 and an actuator 3, a gasket 5 is installed between the upper mold 1 and the lower mold 2 to form a discharge channel 40, the upper mold 1 is fixedly connected to the lower mold 2 by a plurality of fasteners, a feed channel 10 is arranged on one side and the middle of the lower mold 2, a cavity connected to the feed channel 10 is arranged on the lower mold 2, and the cavity includes a main cavity 41 and a sub-cavity 42, a reflux channel 21 is arranged at both ends of the cavity on the upper mold 2, a gasket fine-tuning device 6 for fine-tuning the gasket is arranged on the rear side of the upper mold 1 and the lower mold 2, and a digital micrometer 7 for detecting the gasket adjustment amount is installed on one side of the gasket fine-tuning device 6.

[0020] The actuator 3 includes a gap adjustment motor 31, a connecting rod 32 and a baffle block 33 connected in sequence from top to bottom. The gap adjustment motor 31 (electric cylinder) drives the baffle block 33 to move up and down to adjust the flow rate. This is the existing technology and the working principle will not be repeated here.

[0021] The gasket fine-tuning device 6 includes a mounting bracket 63 fixedly connected to the upper mold 1 or the lower mold 2, and a servo electric cylinder 61 is fixedly mounted on the mounting bracket 63. The servo electric cylinder 61 has an actuator end 611 that can be extended forward and backward. The actuator end 611 is connected to a connecting piece 62, and the connecting piece 62 is connected to the gasket 5.

[0022] More specifically, the connecting member 62 is provided with an electric cylinder connecting hole 621, a micrometer mounting hole 622 and a gasket connecting hole 623, and a buffer groove 624 is provided between the electric cylinder connecting hole 621 and the gasket connecting hole 623. The buffer groove 624 is provided to lock the electric cylinder output shaft through a thread, so that the output shaft of the electric cylinder can be tightened and disassembled separately, which is convenient for cleaning and maintenance.

[0023] More specifically, the gasket 5 is provided with a lug portion connected to the gasket fine-tuning device 6 , and the lug portion is provided with a pin hole, in which a pin is installed, so that the gasket 5 is connected to the connecting piece 62 together.

[0024] More specifically, the gasket 5 is connected to the connecting member 62 via a pin.

[0025] More specifically, the upper mold 1 and the lower mold 2 are connected at one side by a hinge 81, so that the upper mold 1 and the lower mold 2 can be flipped open, which is convenient for online mold opening and cleaning without dismantling the entire upper mold.

[0026] More specifically, a back alignment block 82 and a side alignment block 83 are provided on one side of the upper die 1 and the lower die 2 to prevent the die head from being installed crookedly.

[0027] Working principle: The slurry enters the main cavity 41 and the auxiliary cavity 42 between the upper and lower molds from the feed channel 10, and then flows out from the discharge channel 40 after passing through the baffle block 33 to the electrode material for coating. When the mold is worn out after long-term work and is replaced or repaired and then installed, if the position of the gasket 5 between the upper and lower molds is incorrect, it is easy to affect the coating process window, resulting in the failure of the first coated piece or reduced product quality. At this time, the gasket fine-tuning device 6 begins to work, and the servo electric cylinder 61 works. Its actuator 611 stretches back and forth, and transmits the thrust or tension to the gasket 5 through the connecting piece 62, so as to fine-tune the gasket 5 and displace it to the correct position. During the displacement process, the fine-tuning amount can be read by a digital micrometer to facilitate consistency between the two sides.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coating die capable of automatically adjusting a gasket, characterized in that: It includes an upper die, a lower die and an actuator, a gasket is installed between the upper die and the lower die to form a discharge channel, the upper die is fixedly connected to the lower die by multiple fasteners, a feed channel is arranged on one side and the middle of the lower die, a cavity connected to the feed channel is arranged on the lower die, a reflux channel is arranged at both ends of the cavity on the upper die, a gasket fine-tuning device for fine-tuning the gasket is arranged on the rear side of the upper die and the lower die, and a digital micrometer for detecting the gasket adjustment amount is installed on one side of the gasket fine-tuning device.

2. The coating die capable of automatically adjusting the gasket according to claim 1, characterized in that: The gasket fine-tuning device includes a mounting bracket fixedly connected to the upper mold or the lower mold, a servo electric cylinder is fixedly mounted on the mounting bracket, the servo electric cylinder has an actuator end that can be telescopic forward and backward, the actuator end is connected to a connecting piece, and the connecting piece is connected to the gasket.

3. The coating die capable of automatically adjusting the gasket according to claim 2, characterized in that: The connecting piece is provided with an electric cylinder connection hole, a micrometer installation hole and a gasket connection hole.

4. The coating die capable of automatically adjusting the gasket according to claim 3, characterized in that: The gasket is provided with a lug portion connected with the gasket fine-tuning device, and the lug portion is provided with a pin hole.

5. The coating die capable of automatically adjusting the gasket according to claim 4, characterized in that: The gasket is connected to the connecting piece through a pin.

6. The coating die capable of automatically adjusting the gasket according to claim 5, characterized in that: The upper mold and the rear side of the lower mold are connected by a hinge.

7. The coating die with automatically adjustable gasket according to claim 6, characterized in that: A back alignment block and a lateral alignment block are arranged on one side of the upper die and the lower die.

8. The coating die with automatically adjustable gasket according to claim 7, characterized in that: There are two groups of gasket fine-tuning devices, which are symmetrically installed on the left and right sides of the feed channel.

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