slotting die

Abstract

In an electrode substrate in which an active material is applied to a surface of a current collector, an uncoated portion is molded according to the slotted die of the present application, in which the uncoated portion in which the active material is not applied is formed at one end and the other end of the coated portion in which the active material is applied, the slotted die including: a main die including an upper die and a lower die that are parallel to each other, in which the upper die and the lower die are slidable closer to or farther from each other; a first auxiliary die configured to dispose the uncoated portion of one end of the electrode substrate in a processable position when the electrode substrate is input into the main die, the first auxiliary die including a first auxiliary upper die coupled to the upper die and a first auxiliary lower die coupled to the lower die; and a second auxiliary die configured to dispose the uncoated portion of the other end of the electrode substrate in a processable position when the electrode substrate is input into the main die, the second auxiliary die including a second auxiliary upper die coupled to the upper die and a second auxiliary lower die coupled to the lower die.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2020-0142546, filed on October 29, 2020, the entire contents of which are incorporated herein by reference.

[0002] This invention relates to a grooving mold for molding electrode contacts on an electrode substrate, or for processing an electrode substrate into individual electrodes molded with electrode contacts. In the electrode substrate, an active material is applied to the surface of a current collector, and an uncoated portion without active material is formed at one end and the other end of the coated portion with active material applied. More specifically, this invention provides a grooving mold capable of processing multiple individual electrodes at once, and performing individual grooving through a first auxiliary mold and a second auxiliary mold mounted in a main mold, thus making it easier to groove electrodes of various sizes. Background Technology

[0003] Generally, unlike non-rechargeable primary batteries, secondary batteries are batteries that can be recharged and discharged. Secondary batteries are widely used in high-tech electronic devices such as mobile phones, laptops, and portable video cameras.

[0004] These secondary batteries are divided into can-type secondary batteries where the electrode assembly is built into a metal can, and bag-type secondary batteries where the electrode assembly is built into a bag. The bag-type secondary battery includes an electrode assembly, an electrolyte, and a bag containing the electrode assembly and the electrolyte. Furthermore, the electrode assembly has a structure with multiple electrodes and multiple separators stacked alternately.

[0005] Reference Figure 1A The illustration shows the processing of a single electrode in electrode substrate 1. The positive or negative electrode substrate processed using a slotted die is provided in the following state, with positive or negative active material applied along the longitudinal direction of the positive or negative current collector on the portion other than the two ends.

[0006] In addition, such as Figure 1B As shown, the upper and lower molds of the slotting mold according to the prior art are illustrated. When the electrode substrate is input into the slotting mold, when the upper mold 3 and the lower mold 4 are closed, the uncoated portion 1a formed on one or both ends of the coated portion 1b of the electrode substrate 1 is processed into an electrode tab 2a by pressing the embossing portion 3a and the engraving portion 4a that mesh with each other.

[0007] Here, a grooving mold or another cutting device can also be used to cut the individual electrode 2 together with the processing of the uncoated portion 1a. That is, to process it into a shape with... Figure 1A The lower part shows the shape of a single electrode 2.

[0008] In other words, grooving performed in the grooving mold refers to "cutting," for example, cutting off unwanted portions of the uncoated portion 1a to form electrode tabs 2a, forming electrode tabs 2a and cutting the electrode substrate 1 to a predetermined length to form individual electrodes 2, or cutting the entire uncoated portion 1a from one side. The coated portion 1b of the electrode substrate 1 is cut into coated portions 2b of predetermined dimensions for each individual electrode 2.

[0009] In the existing grooving molds, when inputting electrode substrates 1 with different sizes, there are problems such as the need to change the upper mold 3 and lower mold 4, or limitations in the size of the electrode substrates 1 that can be processed. Furthermore, since it is difficult to individually adjust multiple embossing portions 3a and engraving portions 4a to process multiple electrode tabs 2a at once, there is a problem of increased processing deviation, making it difficult to apply in practice. Summary of the Invention

[0010] Technical issues

[0011] Therefore, in order to solve the problems of the construction according to the prior art, the main object of the present invention is to provide a slotting mold that can process two electrode contacts separately and adjust the separately set settings during processing.

[0012] Technical solution

[0013] To achieve the above objective, when an electrode substrate on which an active material is applied to the surface of a current collector is fed into the electrode substrate, an uncoated portion is molded using a slotting mold according to the present invention, wherein the uncoated portion on which no active material is applied is formed at one end and the other end of the coated portion on which the active material is applied. The slotting mold comprises: a main mold including an upper mold and a lower mold parallel to each other, wherein the upper mold and the lower mold are slidable toward or away from each other; a first auxiliary mold configured such that when the electrode substrate is fed into the main mold, the uncoated portion at one end of the electrode substrate is positioned in a processable position, the first auxiliary mold including a first auxiliary upper mold coupled to the upper mold and a first auxiliary lower mold coupled to the lower mold; and a second auxiliary mold configured such that when the electrode substrate is fed into the main mold, the uncoated portion at the other end of the electrode substrate is positioned in a processable position, the second auxiliary mold including a second auxiliary upper mold coupled to the upper mold and a second auxiliary lower mold coupled to the lower mold.

[0014] When the upper mold and the lower mold of the main mold slide, the sliding of the first auxiliary upper mold and the first auxiliary lower mold of the first auxiliary mold and the sliding of the second auxiliary upper mold and the second auxiliary lower mold of the second auxiliary mold can be carried out simultaneously, so as to simultaneously and separately groove the uncoated part by the first auxiliary mold and the second auxiliary mold. Here, the grooving process includes "forming electrode tabs", "forming electrode tabs and cutting the electrode substrate into individual electrodes" or "cutting the uncoated part".

[0015] The first auxiliary upper mold and the second auxiliary upper mold are detachably and adjustablely coupled to the position of the upper mold, and the first auxiliary lower mold and the second auxiliary lower mold are detachably and adjustablely coupled to the position of the lower mold.

[0016] When the electrode substrate is input into the main mold, the first auxiliary mold and the second auxiliary mold can perform processing to form multiple electrode contacts in one step.

[0017] A stripper can be disposed between the first auxiliary mold and the second auxiliary mold. When the electrode substrate is input, the stripper presses and fixes the coated portion.

[0018] The demolding device may include an upper demolding device coupled to the upper mold and a lower demolding device coupled to the lower mold. When the uncoated portion is molded using the first auxiliary mold and the second auxiliary mold, a predetermined pressure may be applied to the coated portion between the upper demolding device and the lower demolding device to fix the coated portion and prevent it from moving.

[0019] The upper demolding device may include a main upper demolding device disposed at the center between the first auxiliary upper mold and the second auxiliary upper mold, and an auxiliary upper demolding device disposed on one side of the main upper demolding device, with a gap between the main upper demolding device and the auxiliary upper demolding device. The lower demolding device may include a main lower demolding device disposed at the center between the first auxiliary lower mold and the second auxiliary lower mold, and an auxiliary lower demolding device disposed on one side of the main lower demolding device, with a gap between the main lower demolding device and the auxiliary lower demolding device.

[0020] The auxiliary upper demolding device may be disposed on each of the two sides of the main upper demolding device, with a gap between the main upper demolding device and the auxiliary upper demolding device, and the auxiliary lower demolding device may be disposed on each of the two sides of the main lower demolding device, with a gap between the main lower demolding device and the auxiliary lower demolding device.

[0021] Each of the auxiliary upper demolding device and the auxiliary lower demolding device can be detachable. The auxiliary upper demolding device can be detachably coupled to the first auxiliary upper mold of the first auxiliary mold or the second auxiliary upper mold of the second auxiliary mold, and the auxiliary lower demolding device can be detachably coupled to the first auxiliary lower mold of the first auxiliary mold or the second auxiliary lower mold of the second auxiliary mold.

[0022] The gaps between the main upper demolding device and the auxiliary upper demolding device, as well as the gaps between the main lower demolding device and the auxiliary lower demolding device, can be offset in the vertical direction.

[0023] Beneficial effects

[0024] In the present invention having the above-described structure, since the first auxiliary mold and the second auxiliary mold respectively slot the uncoated portions provided at both ends of the electrode substrate, it is easier to perform molding of the two uncoated portions, and slotting can be performed on larger and various types of electrode substrates.

[0025] Because the first auxiliary mold and the second auxiliary mold simultaneously slot each uncoated part, the design flexibility of each electrode tab on both sides can be increased, and the processing position and accuracy can be adjusted more easily.

[0026] In the grooving mold according to the invention, because a demolding device is provided, the coated portion can be fixed and not moved when grooving is performed.

[0027] Because the demolding device is divided into a main demolding device (main upper demolding device and main lower demolding device) and an auxiliary demolding device (auxiliary upper demolding device and auxiliary lower demolding device), the coating part can be supported more stably simply by replacing the auxiliary demolding device, based on the temperature-based thermal expansion coefficient of the electrode substrate.

[0028] Furthermore, the gaps between the main upper demolding device and the auxiliary upper demolding device, as well as the gaps between the main lower demolding device and the auxiliary lower demolding device, can be offset vertically to prevent pressing, imprinting, or jamming on the electrode substrate. The auxiliary demolding devices are detachably mounted on the first and second auxiliary molds, so they can be easily replaced together when the first and second auxiliary molds are changed. Attached Figure Description

[0029] Figure 1A This is a view illustrating the state of a single electrode formed by slotting in an electrode substrate.

[0030] Figure 1B This is a view showing the shapes of the upper and lower molds of a slotting mold according to the prior art.

[0031] Figure 2This is a plan view of the upper and lower molds of the slotting mold according to the first embodiment of the present invention.

[0032] Figure 3 This is a side view of the upper and lower molds of the slotting mold according to the first embodiment of the present invention.

[0033] Figure 4 It is a diagram Figure 3 A view showing the closed state of the upper and lower molds.

[0034] Figure 5 It is an enlarged diagram illustrating the vertical misalignment of the gaps between the main upper demolding device and the auxiliary upper demolding device, as well as the gaps between the main lower demolding device and the auxiliary lower demolding device. Detailed Implementation

[0035] In the following, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings to enable those skilled in the art to readily implement the technical concept of the invention. However, the invention may be embodied in different forms and should not be construed as limited to the embodiments set forth herein.

[0036] To clearly explain the invention, irrelevant parts have been omitted, and throughout the specification, the same reference numerals are assigned to the same or similar parts.

[0037] Furthermore, the terms or words used in this specification and claims should not be construed as having a general meaning or dictionary-based meaning, but should be interpreted as meanings and concepts that are within the scope of the invention, based on the principle that the inventor can properly define the concepts of the terms to best describe and explain his or her invention.

[0038] This invention relates to a grooving mold that, when an electrode substrate 1 is input, grooves an uncoated portion (molding electrode tabs on the uncoated portion) to groove the electrode substrate 1 into a separate electrode 2. In the electrode substrate 1, an active material is applied to the surface of a current collector, and an uncoated portion 1a to which the active material is not applied is formed at one end and the other end of a coated portion 1b to which the active material is applied. In the separate electrode 2, electrode tabs 2a are formed at both ends or one end of the coated portion 2b. Embodiments according to the invention will be described below with reference to the accompanying drawings.

[0039] First Implementation Method

[0040] Figure 2 This is a plan view of the upper and lower molds of the slotting mold according to the first embodiment of the present invention. Figure 3 This is a side view of the upper and lower molds of the slotting mold according to the first embodiment of the present invention. Figure 4 It is a diagram Figure 3A view showing the closed state of the upper and lower molds.

[0041] Referring to the accompanying drawings, the slotting mold provided in this embodiment includes a main mold 10 and a first auxiliary mold 20 and a second auxiliary mold 30 respectively additionally coupled to one side and the other side of the main mold 10.

[0042] like Figure 2 As shown, the main mold 10 includes an upper mold 11 and a lower mold 12 that are parallel to each other. The upper mold 11 and the lower mold 12 are configured to slide closer to or further away from each other. That is, with the lower mold 12 fixed, the upper mold 11 descends, or with the upper mold 11 fixed, the lower mold 12 rises. Alternatively, the upper mold 11 descends and the lower mold 12 rises. Here, each surface facing each other is formed as a flat surface.

[0043] In addition, the first auxiliary mold 20 is installed on one side of the main mold 10, and the second auxiliary mold 30 is installed on the other side of the main mold 10.

[0044] When the electrode substrate 1 is fed into the main mold 10, the first auxiliary mold 20 is positioned at the uncoated portion 1a at one end of the electrode substrate 1. The first auxiliary mold includes a first auxiliary upper mold 21 and a first auxiliary lower mold 22, with the first auxiliary upper mold 21 coupled to the upper mold 11 and the first auxiliary lower mold 22 coupled to the lower mold 12.

[0045] When the electrode substrate 1 is fed into the main mold 10, the second auxiliary mold 30 is positioned at the uncoated portion 1a at the other end of the electrode substrate 1. The second auxiliary mold 30 includes a second auxiliary upper mold 31 and a second auxiliary lower mold 32, with the second auxiliary upper mold 31 coupled to the upper mold 11 on the opposite side of the first auxiliary upper mold 21, and the second auxiliary lower mold 32 coupled to the lower mold 12 on the opposite side of the first auxiliary lower mold 22.

[0046] Therefore, when the upper mold 11 and lower mold 12 of the main mold 10 slide, the sliding of the first auxiliary upper mold 21 and the first auxiliary lower mold 22 of the first auxiliary mold 20 and the sliding of the second auxiliary upper mold 31 and the second auxiliary lower mold 32 of the second auxiliary mold 30 are performed simultaneously.

[0047] Therefore, the first auxiliary mold 20 and the second auxiliary mold 30 can simultaneously slot each uncoated portion 1a of the electrode substrate 1. That is, the slotting process performed here refers to all three processes, such as "processing of molding electrode tabs", "processing of forming electrode tabs and then cutting the electrode substrate into individual electrodes", or "processing of cutting uncoated portions from coated portions".

[0048] The first auxiliary upper mold 21 and the second auxiliary upper mold 31 provided in this embodiment are coupled in the upper mold 11 to be detachable and position-adjustable, and the first auxiliary lower mold 22 and the second auxiliary lower mold 32 are coupled in the lower mold 12 to be detachable and position-adjustable.

[0049] Therefore, when it is necessary to adjust the size or position of the electrode tabs according to the size of the electrode substrate 1 on which the slots are made, the slots can be made by adjusting or replacing only one of the first auxiliary mold 20 and / or the second auxiliary mold 30, without replacing the entire main mold 10.

[0050] Furthermore, in molds based on existing technology, such as Figure 1B As shown, only one embossing portion 3a and one engraving portion 4a are formed on the upper mold 3 and lower mold 4, respectively. However, in the mold provided by the present invention, as... Figure 2 As shown, since the first auxiliary mold 20 and the second auxiliary mold 30 are set to be separate from each other, the first auxiliary upper mold 21 and the second auxiliary upper mold 31, as well as the first auxiliary lower mold 22 and the second auxiliary lower mold 32, can be set in pairs. Therefore, multiple embossed parts can be formed in the first auxiliary upper mold 21 and the second auxiliary upper mold 31, and multiple engraved parts can be formed in the first auxiliary lower mold 22 and the second auxiliary lower mold 32.

[0051] Therefore, in the slotting mold provided in this embodiment, when the electrode substrate 1 is input into the main mold 10, the first auxiliary mold 20 and the second auxiliary mold 30 can perform processing to form multiple electrode contacts simultaneously in one step.

[0052] Second Implementation Method

[0053] Furthermore, the slotting mold according to the invention may include a demolding device 40. That is, as... Figure 3 and Figure 4 To illustrate more clearly, in the slotting mold provided in this embodiment, when the electrode substrate 1 is input between the first auxiliary mold 20 and the second auxiliary mold 30, a demolding device 40 can be provided to press and fix the coated portion 1b disposed between the two uncoated portions 1a.

[0054] The demolding device 40 includes an upper demolding device 41 coupled to the upper mold 11 and a lower demolding device 42 coupled to the lower mold 12. When the uncoated portion is molded using the first auxiliary mold 20 and the second auxiliary mold 30, a predetermined pressure is applied to the coated portion 1b between the upper demolding device 41 and the lower demolding device 42 to fix the coated portion 1b and prevent it from moving.

[0055] The upper demolding device 41 includes a main upper demolding device 41a disposed at the center between the first auxiliary upper mold 21 and the second auxiliary upper mold 31, and an auxiliary upper demolding device 41b disposed on one side of the main upper demolding device 41a, with a gap between the main upper demolding device 41a and the auxiliary upper demolding device 41b.

[0056] In addition, the lower demolding device 42 includes a main lower demolding device 42a disposed at the center between the first auxiliary lower mold 22 and the second auxiliary lower mold 32, and an auxiliary lower demolding device 42b disposed on one side of the main lower demolding device 42a, with a gap between the main lower demolding device 42a and the auxiliary lower demolding device 42b.

[0057] Here, the auxiliary upper demolding device 41b is disposed on each of the two sides of the main upper demolding device 42a, and there is a gap between the auxiliary upper demolding device 41b and the main upper demolding device 42a; the auxiliary lower demolding device 42b is disposed on each of the two sides of the main lower demolding device 42a, and there is a gap between the auxiliary lower demolding device 42b and the main lower demolding device 42a.

[0058] The upper auxiliary demolding device 41b and the lower auxiliary demolding device 42b are detachable. That is, the upper auxiliary demolding device 41b is detachably coupled to the first upper auxiliary mold 21 of the first auxiliary mold 20 or the second upper auxiliary mold 31 of the second auxiliary mold 30, and the lower auxiliary demolding device 42b is detachably coupled to the first lower auxiliary mold 22 of the first auxiliary mold 20 or the second lower auxiliary mold 32 of the second auxiliary mold 30.

[0059] In addition, refer to Figure 5 , Figure 5 This is an enlarged view illustrating the vertical misalignment of the gaps between the main upper demolding device 41a and the auxiliary upper demolding device 41b, and between the main lower demolding device 42a and the auxiliary lower demolding device 42b. The gaps appear between the main upper demolding device 41a and the auxiliary upper demolding device 41b, and between the main lower demolding device 42a and the auxiliary lower demolding device 42b.

[0060] Here, the gaps between the main upper demolding device 41a and the auxiliary upper demolding device 41b, and the gaps between the main lower demolding device 42a and the auxiliary lower demolding device 42b, are misaligned in the vertical direction.

[0061] In other words, as the width of the electrode substrate 1 increases (the distance between the uncoated portions at both ends increases), it becomes difficult to effectively fix the coated portion 1b using a single mold release device due to the impact and thermal expansion applied during processing.

[0062] Furthermore, when only one main demolding device 41a or 42a is provided, vibration of the coated portion 1b is likely to occur near the first auxiliary mold 20 and the second auxiliary mold 30 performing the processing. Therefore, auxiliary demolding devices 41b and 42b can be additionally mounted to the first auxiliary mold 20 and the second auxiliary mold 30 to additionally fix the coated portion 1b when the first auxiliary mold 20 and the second auxiliary mold 30 slide.

[0063] For the reasons mentioned above, the demolding devices provided in this embodiment are configured as main demolding devices 41a and 42a installed on the main mold 10 and auxiliary demolding devices 41b and 42b installed on the auxiliary molds 20 and 30.

[0064] Furthermore, as described above, in this embodiment, the gaps between the main upper demolding device 41a and the auxiliary upper demolding device 41b, and between the main lower demolding device 42a and the auxiliary lower demolding device 42b, are misaligned in the vertical direction. That is, when the upper and lower gaps are at the same position, both sides can be opened, and the coating portion 1b may sag or get stuck between the gaps. However, when the gaps are misaligned as described above, since at least one side of the upper and lower sides is blocked, the possibility of the coating portion 1b sagling or getting stuck between the gaps can be significantly reduced.

[0065] In the present invention having the above-described structure, since the first auxiliary mold 20 and the second auxiliary mold 30 respectively slot the uncoated portions 1a provided at both ends of the electrode substrate 1 according to the operation of the main mold 10, it is easier to perform the molding of the two uncoated portions 1a, and slotting can be performed on larger and various types of electrode substrates.

[0066] Because the first auxiliary mold 20 and the second auxiliary mold 30 simultaneously slot each uncoated part, the design flexibility of each electrode tab on both sides of the processing can be increased, and the processing position and accuracy can be adjusted more easily.

[0067] In the grooving mold according to the invention, because a demolding device 40 is provided, the coated portion can be fixed and not moved when grooving is performed.

[0068] Because the demolding device is divided into a main demolding device (main upper demolding device and main lower demolding device) and an auxiliary demolding device (auxiliary upper demolding device and auxiliary lower demolding device), the coating part can be supported more stably simply by replacing the auxiliary demolding device, based on the temperature-based thermal expansion coefficient of the electrode substrate.

[0069] Furthermore, the gaps between the main upper demolding device 41a and the auxiliary upper demolding device 41b, and between the main lower demolding device 42a and the auxiliary lower demolding device 42b, can be offset vertically to prevent pressing, imprinting, or jamming on the electrode substrate. The auxiliary demolding devices 41b and 42b are detachably mounted on the first auxiliary mold 20 and the second auxiliary mold 30, so that when the first auxiliary mold 20 and the second auxiliary mold 30 are replaced, the auxiliary demolding devices 41b and 42b can be replaced along with them.

[0070] Although embodiments of the invention have been described with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

[0071] [Explanation of reference numerals in the attached figures]

[0072] 1: Electrode substrate

[0073] 1a: Uncoated area

[0074] 1b: Coated part

[0075] 2a: Electrode contacts

[0076] 10: Main mold

[0077] 11: Upper mold

[0078] 12: Lower mold

[0079] 20: First Auxiliary Mold

[0080] 30: Second auxiliary mold

[0081] 40: Demolding device

Claims

1. A grooving die, wherein when an active material is applied to the surface of an electrode substrate on which the active material is applied, the grooving die molds an uncoated portion, wherein the uncoated portion on which the active material is not applied is formed at one end and the other end of a coated portion on which the active material is applied, the grooving die comprising: The main mold includes an upper mold and a lower mold that are parallel to each other, wherein the upper mold and the lower mold can slide closer to or further away from each other; The first auxiliary mold is configured such that when the electrode substrate is input into the main mold, the uncoated portion at one end of the electrode substrate is positioned in a processable position. The first auxiliary mold includes a first auxiliary upper mold coupled to the upper mold and a first auxiliary lower mold coupled to the lower mold. and The second auxiliary mold is configured such that when the electrode substrate is input into the main mold, the uncoated portion at the other end of the electrode substrate is positioned in a processable position. The second auxiliary mold includes a second auxiliary upper mold coupled to the upper mold and a second auxiliary lower mold coupled to the lower mold. The first auxiliary upper mold and the second auxiliary upper mold are detachably and adjustablely coupled to the position of the upper mold, and the first auxiliary lower mold and the second auxiliary lower mold are detachably and adjustablely coupled to the position of the lower mold. A demolding device is provided between the first auxiliary mold and the second auxiliary mold. When the electrode substrate is input, the demolding device presses and fixes the coating portion. The demolding device includes an upper demolding device coupled to the upper mold and a lower demolding device coupled to the lower mold. When the uncoated portion is molded using the first auxiliary mold and the second auxiliary mold, a predetermined pressure is applied to the coated portion between the upper and lower mold releasers to fix the coated portion and prevent it from moving. The upper demolding device includes a main upper demolding device and an auxiliary upper demolding device. The main upper demolding device is disposed between the first auxiliary upper mold and the second auxiliary upper mold, and a gap exists between the main upper demolding device and the auxiliary upper demolding device. The lower demolding device includes a main lower demolding device and an auxiliary lower demolding device. The main lower demolding device is disposed between the first auxiliary lower mold and the second auxiliary lower mold, and a gap exists between the main lower demolding device and the auxiliary lower demolding device. The gap between the main upper demolding device and the auxiliary upper demolding device is misaligned relative to the gap between the main lower demolding device and the auxiliary lower demolding device.

2. The slotting mold according to claim 1, wherein, When the upper mold and the lower mold of the main mold slide, the sliding of the first auxiliary upper mold and the first auxiliary lower mold of the first auxiliary mold and the sliding of the second auxiliary upper mold and the second auxiliary lower mold of the second auxiliary mold are carried out simultaneously, so as to simultaneously groove the uncoated part by the first auxiliary mold and the second auxiliary mold individually and separately.

3. The slotting mold according to claim 1, wherein, When the electrode substrate is input into the main mold, the first auxiliary mold and the second auxiliary mold perform processing to form multiple electrode contacts in one step.

4. The slotting mold according to claim 1, wherein, The main upper demolding device is positioned at the center between the first auxiliary upper mold and the second auxiliary upper mold, and the auxiliary upper demolding device is positioned on one side of the main upper demolding device. A gap exists between the main upper demolding device and the auxiliary upper demolding device. The main lower demolding device is located at the center between the first auxiliary lower mold and the second auxiliary lower mold, and the auxiliary lower demolding device is located on one side of the main lower demolding device, with a gap between the main lower demolding device and the auxiliary lower demolding device.

5. The slotting mold according to claim 1, wherein, The auxiliary upper demolding device is disposed on each of the two sides of the main upper demolding device, and a gap is formed between the main upper demolding device and the auxiliary upper demolding device. The auxiliary lower demolding device is disposed on each of the two sides of the main lower demolding device, and a gap is formed between the main lower demolding device and the auxiliary lower demolding device.

6. The slotting mold according to claim 1, wherein, Each of the auxiliary upper demolding device and the auxiliary lower demolding device is detachable.

7. The slotting mold according to claim 1, wherein, The auxiliary upper mold release device is detachably coupled to the first auxiliary upper mold of the first auxiliary mold or the second auxiliary upper mold of the second auxiliary mold, and The auxiliary lower mold release device is detachably coupled to the first auxiliary lower mold of the first auxiliary mold or the second auxiliary lower mold of the second auxiliary mold.

8. The slotting mold according to claim 1, wherein, The gaps between the main upper demolding device and the auxiliary upper demolding device, as well as the gaps between the main lower demolding device and the auxiliary lower demolding device, are misaligned in the vertical direction.

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