Universal square shell support and full-automatic square shell high-speed cleaning equipment

Abstract

The utility model discloses a square shell universal support and full-automatic square shell high-speed cleaning equipment. The universal support for the square shell comprises a mounting plate and at least one limiting supporting structure, the limiting supporting structure comprises a supporting mechanism, first limiting mechanisms and second limiting mechanisms, the supporting mechanism is used for supporting a bottom plate of the square shell, and the first limiting mechanisms are arranged on one side of the supporting mechanism at intervals in the first direction; the first limiting mechanism and the supporting mechanism are matched to form a first limiting structure used for limiting the square shell to move in the first direction, the second limiting mechanism is arranged on one side of the supporting mechanism in the second direction, and the second limiting mechanism and the supporting mechanism are matched to form a second limiting structure used for limiting the square shell to move in the second direction. The universal support for the square shell is simple in structure, the square shell can be limited by clamping the large face and the side face of the square shell, the square shell can be fixed by supporting the inner bottom face of the square shell, and therefore the universal support can be suitable for square shells of various models, and the model changing frequency is reduced.

Description

Technical Field

[0001] The utility model particularly relates to a universal bracket for square shells and full-automatic high-speed cleaning equipment for square shells, belonging to the technical field of ultrasonic cleaning equipment. Background Art

[0002] When new energy battery shells are being formed, stretching oil is needed to protect the surface of the workpiece from damage, but the high-viscosity stretching oil will adhere to the surface of the shell. At the same time, carbon deposits and aluminum chips generated on the surface during battery shell processing also need to be handled.

[0003] Square shell manufacturers mainly use ultrasonic cleaning machines to clean the inner and outer surfaces of the shell. The cleaning speed of conventional shell models can generally only reach about 50ppm. As the speed of battery shell production equipment increases or the production capacity expands, higher requirements are placed on the cleaning speed of its downstream cleaning equipment. At the same time, due to high labor costs and low efficiency, the cleaning machine needs to be able to achieve fully automated operation. Square shells are usually hung on the cleaning bracket of the conveyor chain and enter the cleaning machine. For battery shells of different sizes, the bracket needs to be replaced or adjusted. Due to the large number of brackets on the cleaning machine, the changeover time is long, which affects the cleaning capacity. Utility Model Content

[0004] The main purpose of the utility model is to provide a universal bracket for square shells and a fully automatic high-speed square shell cleaning device, so as to overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model includes:

[0006] The first aspect of the utility model provides a universal bracket for a square shell, which includes a mounting plate and at least one limiting support structure, wherein the limiting support structure is fixed on the mounting plate, the limiting support structure includes a supporting mechanism, a first limiting mechanism and a second limiting mechanism, the supporting mechanism being used to support the bottom plate of the square shell, the first limiting mechanism being arranged at intervals along a first direction on one side of the supporting mechanism, a first gap being provided between the first limiting mechanism and the supporting mechanism for embedding the first side plate of the square shell, the first limiting mechanism cooperating with the supporting mechanism to form a first limiting structure for limiting the movement of the square shell along the first direction, the second limiting mechanism being arranged at one side of the supporting mechanism along a second direction, a second gap being provided between the second limiting mechanism and the supporting mechanism for embedding the second side plate of the square shell, the second limiting mechanism cooperating with the supporting mechanism to form a second limiting structure for limiting the movement of the square shell along the second direction, wherein the first direction intersects with the second direction, and the first side plate and the second side plate are two adjacent side plates.

[0007] The second aspect of the utility model provides a fully automatic square shell high-speed cleaning device, including a cleaning mechanism, a conveying mechanism and a first square shell fixing mechanism, the cleaning mechanism having a cleaning tank for accommodating a liquid cleaning system, the first square shell fixing mechanism being fixed on the conveying mechanism, a portion of the conveying mechanism being arranged in the cleaning tank, the first square shell fixing mechanism being able to enter the cleaning tank and leave the cleaning tank along a selected direction driven by the conveying mechanism, wherein the first square shell fixing mechanism is the square shell universal bracket.

[0008] Compared with the prior art, the advantages of the utility model include:

[0009] The utility model provides a universal bracket for square shells, which has a simple structure and can limit the position of the square shell by clamping the large surface and the side surface (side plate) of the square shell and support the inner bottom surface (bottom plate) of the square shell to fix it, so that it can be suitable for square shells of various models and reduce the number of model changes.

[0010] The utility model provides a full-automatic square shell high-speed cleaning device, in which a mounting plate of a square shell universal bracket and a chain accessory are connected by a quick clamping method, so that the overall quick changeover is convenient.

[0011] The utility model provides a fully automatic square shell high-speed cleaning device, in which a mounting plate of a square shell universal bracket is arranged to be a structure that is sunken relative to the plane of an annular chain, which can effectively avoid interference problems between the square shell universal brackets and ensure that the square shell passes through the cleaning mechanism smoothly.

[0012] The utility model provides a fully automatic square shell high-speed cleaning device. When the ring chain enters the cleaning tank, it is in a vertical state with the liquid surface in the cleaning tank. When leaving the cleaning tank, it is in an inclined state with the liquid surface in the cleaning tank. The shell opening faces downward, ensuring that the air inside the square shell can be effectively emptied when the square shell enters the cleaning liquid, thereby ensuring that the bottom of the square shell is cleaned and reducing the impact on the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of a square shell universal bracket in Example 1 of the utility model;

[0015] Figure 2 It is a structural schematic diagram of a single position-limiting support structure in a square shell universal bracket in Example 1 of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a square shell after being fixed by a square shell universal bracket in Embodiment 1 of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of a square shell fixed by a single limiting support structure of a square shell universal bracket in Example 1 of the utility model;

[0018] Figure 5 This is a schematic diagram of the overall structure of a fully automatic square shell high-speed cleaning device in Example 2 of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure inside the cleaning mechanism of a fully automatic square shell high-speed cleaning device in Example 2 of the utility model;

[0020] Figure 7 It is a structural schematic diagram of the annular chain and the square shell universal bracket in Example 2 of the utility model. DETAILED DESCRIPTION

[0021] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the utility model after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0022] The first aspect of the utility model provides a universal bracket for a square shell, which includes a mounting plate and at least one limiting support structure, wherein the limiting support structure is fixed on the mounting plate, the limiting support structure includes a supporting mechanism, a first limiting mechanism and a second limiting mechanism, the supporting mechanism is used to support the bottom plate of the square shell, the first limiting mechanism is arranged at a distance along a first direction on one side of the supporting mechanism, a first gap is provided between the first limiting mechanism and the supporting mechanism for the first side plate of the square shell to be embedded, the first limiting mechanism cooperates with the supporting mechanism to form a first limiting structure for limiting the movement of the square shell along the first direction, the second limiting mechanism is arranged at a side of the supporting mechanism along the second direction, a second gap is provided between the second limiting mechanism and the supporting mechanism for the second side plate of the square shell to be embedded, the second limiting mechanism cooperates with the supporting mechanism to form a second limiting structure for limiting the movement of the square shell along the second direction, wherein the first direction intersects with the second direction, and the first side plate and the second side plate are two adjacent side plates.

[0023] Further, the support mechanism includes at least two support rods, at least two support rods are arranged at intervals along the second direction, one end of the support rod is fixed to the mounting plate, and the other end serves as a support end, and the support ends of all the support rods are located in the same plane and form a support surface for supporting the bottom plate of the square shell;

[0024] The first limiting mechanism includes at least two first limiting rods, which are fixed on the mounting plate at intervals along the second direction. The second limiting mechanism includes at least one second limiting rod, which is fixed on the mounting plate.

[0025] Furthermore, at least two support rods, at least two first limit rods and at least one second limit rod are combined to form two limit rod groups, and the two limit support rod groups are arranged at intervals along the second direction; the two limit support rod groups each include a mounting block and at least one support rod and a first limit rod, the support rod and the first limit rod are fixedly arranged on the mounting block, the first limit rod is arranged at intervals along the first direction on one side of the support rod, the mounting block is fixed on the mounting plate, and one of the limit support rod groups also includes a second limit rod, the second limit rod is arranged on the mounting block, and the second limit rod is arranged at intervals along the second direction on the side of the support rod included in the limit support rod group away from the other limit support rod group.

[0026] Furthermore, the support rods and the first limit rod included in the same limit support rod group are arranged on the same straight line along the first direction.

[0027] Furthermore, the support rod, the first limiting rod and the second limiting rod are arranged in parallel.

[0028] Furthermore, the position-limiting support rod group also includes a connecting piece, and the multiple support rods included in the same position-limiting support rod group are fixedly connected as a whole via the connecting piece.

[0029] Further, the mounting block is detachably arranged on the mounting plate.

[0030] The second aspect of the utility model provides a fully automatic square shell high-speed cleaning device, including a cleaning mechanism, a conveying mechanism and a first square shell fixing mechanism, the cleaning mechanism having a cleaning tank for accommodating a liquid cleaning system, the first square shell fixing mechanism being fixed on the conveying mechanism, part of the conveying mechanism being arranged in the cleaning tank, the first square shell fixing mechanism being able to enter the cleaning tank and leave the cleaning tank along a selected direction driven by the conveying mechanism, wherein the first square shell fixing mechanism is a universal bracket for square shells.

[0031] Furthermore, the conveying mechanism includes a driving mechanism and two parallelly arranged ring chains, the driving mechanism is transmission-connected to the ring chains, the square shell universal bracket is arranged between the two ring chains, and the mounting plates are respectively fixedly connected to the two ring chains, wherein the part of the ring chain entering the cleaning tank is vertically arranged, and the part leaving the cleaning tank is inclined, and the vertical arrangement or inclined arrangement here both use the liquid level or horizontal plane in the cleaning tank as the reference plane.

[0032] Furthermore, the mounting plate is arranged on a side of the ring chain close to its own ring center, and the position limiting support structure is located on a side of the mounting plate facing away from the ring center of the ring chain;

[0033] Furthermore, the first square shell fixing mechanism includes a plurality of square shell universal brackets, and the plurality of square shell universal brackets are arranged side by side on two ring chains.

[0034] Furthermore, the cleaning mechanism is an ultrasonic cleaning mechanism.

[0035] Furthermore, the fully automatic square shell high-speed cleaning equipment also includes: a second square shell fixing mechanism, a third square shell fixing mechanism and a square shell transfer mechanism. The second square shell fixing mechanism and the third square shell fixing mechanism are arranged on both sides of the cleaning mechanism along the conveying direction of the square shell. The second square shell fixing mechanism and the third square shell fixing mechanism both include a square shell universal bracket. The square shell transfer mechanism is used to transfer the square shell between the first square shell fixing mechanism and the second square shell fixing mechanism and the third square shell fixing mechanism.

[0036] The technical solution, its implementation process and principle will be further explained below in conjunction with the accompanying drawings and specific implementation cases.

[0037] Example 1

[0038] See also Figure 1 and Figure 2 A universal bracket for a square shell includes a mounting plate 31 and a plurality of position-limiting support structures 32. The plurality of position-limiting support structures 32 are fixed on the mounting plate 31 at intervals, and each position-limiting support structure 32 is used to support and fix a square shell.

[0039] For details, please refer to Figure 3 and Figure 4The limiting support structure 32 includes a first limiting rod group 3210 and a second limiting rod group 3220. The first limiting rod group 3210 and the second limiting rod group 3220 are fixed on the mounting plate 31 at intervals along the second direction. The first limiting rod group 3210 and the second limiting rod group 3220 both include a mounting block 321, two support rods 322 and a first limiting rod 323. The two support rods 322 and the first limiting rod 323 are fixed on the mounting block 321 at intervals along the first direction. The four support rods 322 included in the first limiting rod group 3210 and the second limiting rod group 3220 form a supporting mechanism for supporting the bottom plate of the square shell 100. There is a first gap between the first limiting rod 323 included in the first limiting rod group 3210 and the second limiting rod group 3220 and a support rod 322 adjacent to the first limiting rod group 322 for the first side plate of the square shell 100 to be embedded. The first limiting rod group 3210 and the second limiting rod group 3220 The two first limit rods 323 included in the group 3220 and the adjacent support rods 322 cooperate to form a first limiting structure for limiting the movement of the square shell 100 along the first direction, and the second limit rod group 3220 also includes a second limit rod 324, the second limit rod 324 is fixedly set on the mounting block 321, the second limit rod 324 is spaced along the second direction on the side of the support rod 322 included in the second limit rod group 3220 away from the first limit rod group 3210, and there is a second gap between the second limit rod 324 and the adjacent support rod 322 for the second side panel of the square shell 100 to be embedded, and the second limit rod 323 included in the second limit rod group 3220 and the adjacent support rod 322 cooperate to form a second limiting structure for limiting the movement of the square shell 100 along the second direction, wherein the first direction intersects with the second direction, and the first side panel and the second side panel are two adjacent side panels.

[0040] It can be understood that the multiple support rods 322 in the limiting support structure 32 in the utility model can support the square shell 100, and the first limiting rod 323 and the second limiting rod 324 respectively cooperate with the multiple support rods 322 in the first and second directions of intersection and limit the relative movement between the square shell 100 and the limiting support structure 32, and the first limiting rod 323 and the second limiting rod 324 respectively cooperate with two adjacent side plates of the square shell, so that the limiting support structure 32 can be unaffected by the size of the square shell to a certain extent, and thus can achieve support and restriction of square shells of various sizes, thereby adapting to various models of square shells.

[0041] Specifically, the support rod 322 and the first limit rod 323 included in any one of the first limit rod group 3210 and the second limit rod group 3220 are located on the same straight line. More specifically, the support rod 322, the first limit rod 323 and the second limit rod 324 can be fixed to the mounting block 321 in a detachable manner, which is not specifically limited here. More specifically, the mounting block 321 can also be fixed to the mounting plate 31 in a detachable manner. For example, the mounting block 321 can be fixed to the mounting plate 31 by screws / bolts and other threaded connectors.

[0042] For more details, please refer to Figure 4 The mounting block 321 has a connecting portion and an extending portion which are arranged in sequence, the connecting portion is fixedly connected to the mounting plate, and the extending portion extends to one side of the mounting plate 31, wherein the support rod 322, the first limiting rod 323 and the second limiting rod 324 are fixed on the extending portion.

[0043] Specifically, the multiple support rods 322 included in the first limiting rod group 3210 and the second limiting rod group 3220 are all arranged in parallel, and the heights of the multiple support rods 322 are consistent, and the top ends of the multiple support rods 322 are located in the same plane and form a support surface for the bottom plate of the supporting square shell. More specifically, the first limiting rod group 3210 and the second limiting rod group 3220 also include a connecting piece 325, and the multiple support rods 322 included in the same limiting support rod 322 group are also fixedly connected as a whole via the connecting piece 325. It should be noted that the shapes, sizes and structures of the multiple support rods 322 included in the first limiting rod group 3210 and the second limiting rod group 3220 can be the same, and no special limitation is made here. More specifically, the first limiting rod 323 and the second limiting rod 324 can also be arranged in parallel with the support rod 322, and the heights of the first limiting rod 323 and the second limiting rod 324 can be the same or different from the height of the support rod 322.

[0044] It should be noted that the square shell in the present invention is generally a battery shell, and of course it can also be other containers with openings.

[0045] Example 2

[0046] See also Figure 5 and Figure 6A fully automatic square shell high-speed cleaning device comprises a second square shell fixing mechanism 40, a cleaning mechanism 10, a conveying mechanism 20, a first square shell fixing mechanism 30, a third shell fixing mechanism 50 and a square shell transfer mechanism (not shown in the figure), wherein the second square shell fixing mechanism 40 is arranged at a loading station upstream of the cleaning mechanism 10, and the third shell fixing mechanism 50 is arranged at a unloading station downstream of the cleaning mechanism 10, the first square shell fixing mechanism 30 is fixedly arranged on the conveying mechanism 20, and can move in a direction from the loading station to the unloading station and pass through the cleaning mechanism 10 under the drive of the conveying mechanism 20, and the square shell transfer mechanism is used to transfer square shells between the first square shell fixing mechanism 30, the second square shell fixing mechanism 40 and the third shell fixing mechanism 50.

[0047] Specifically, the first square shell fixing mechanism 30, the second square shell fixing mechanism 40 and the third party shell fixing mechanism 50 all include the square shell universal bracket in Example 1, which is mainly used to support and restrict the square shell. The first square shell fixing mechanism 30, the second square shell fixing mechanism 40 and the third party shell fixing mechanism 50 may include a single row or multiple rows of square shell universal brackets, and the number of which can be adjusted according to specific needs, which is not limited here. Specifically, the square shell transfer mechanism may include a manipulator known to those skilled in the art, and its own structure and the CNC program it relies on are all known to those skilled in the art, and its specific structure, working mode, etc. are not limited here. In this embodiment, the square shell transfer mechanism can achieve a square shell transfer speed of 100ppm.

[0048] Specifically, the cleaning mechanism 10 is an ultrasonic cleaning mechanism, which has a cleaning tank for accommodating a liquid cleaning system. The first square shell fixing mechanism 30 is fixed on the conveying mechanism 20, and part of the conveying mechanism 20 is arranged in the cleaning tank. The first square shell fixing mechanism 30 can enter the cleaning tank and leave the cleaning tank along a selected direction under the drive of the conveying mechanism 20.

[0049] For more details, please refer to Figure 7 The conveying mechanism 20 includes a driving mechanism and two parallel ring chains 21, the driving mechanism is connected to the ring chains 21, and the first square shell fixing mechanism 30 includes a plurality of square shell universal brackets arranged at equal intervals between the two ring chains 21, so as to make full use of the space in the length direction of the cleaning mechanism, and to shorten the overall length of the equipment as much as possible without affecting the cleaning effect of the cleaning mechanism at a speed of 100ppm. Each square shell universal bracket includes 4-6 limiting support structures 32, and the 4-6 limiting support structures 32 are arranged at equal intervals between the two ring chains 21 to ensure that the square shell can pass through the cleaning mechanism smoothly, especially without interference when turning. Exemplarily, the spacing between the plurality of square shell universal brackets is 203.2mm.

[0050] More specifically, the mounting plate 31 of the universal bracket of the square shell is fixedly connected to the two ring chains 21 respectively, wherein the ring chain 21 is vertically arranged at the part entering the cleaning tank, and is inclined at the part leaving the cleaning tank. More specifically, the ring chain 21 is vertical to the liquid level 101 in the cleaning tank when entering the cleaning tank, and is vertical to the liquid level 101 in the cleaning tank when leaving the cleaning tank, ensuring that the internal air of the square shell can be effectively emptied when entering the cleaning liquid, thereby ensuring that the bottom of the square shell is cleaned.

[0051] For details, please refer to Figure 7 The mounting plate 31 of the square shell universal bracket is arranged on the side of the ring chain 21 close to its own ring center, and the limiting support structure 32 is located on the side of the mounting plate 31 facing away from the ring center of the ring chain 21, that is, the mounting plate 31 sinks a certain distance toward the inner side of the center of the ring chain.

[0052] For details, please refer to Figure 7 The mounting plate 31 of the square shell universal bracket is fixedly connected to the chain attachment 22 of the ring chain 21 by a quick clamping handle 23, which can realize the overall quick change of the square shell universal bracket and reduce the changeover time. It should be noted that the ring chain 21 with the chain attachment 22 and the quick clamping handle 23 are both known to those skilled in the art and are not the key points of protection of the present utility model.

[0053] The ring chain in the utility model is in a vertical state with the liquid surface in the cleaning tank when entering the cleaning tank, and is in an inclined state with the liquid surface in the cleaning tank when leaving the cleaning tank, with the shell opening facing downward, ensuring that the air inside the square shell can be effectively emptied when the cleaning liquid enters, thereby ensuring that the bottom of the square shell is cleaned and reducing the impact on the next process.

[0054] It should be understood that the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A universal bracket for square shell, characterized in that: The bracket has a first end for supporting the bottom plate of the housing, the second end for supporting the bottom plate being provided with a first stop and a second stop for supporting the bottom plate of the housing.

2. The square shell universal bracket according to claim 1, characterized in that: The support mechanism comprises at least two support rods, at least two of the support rods are arranged at intervals along the second direction, one end of the support rod is fixed to the mounting plate, and the other end serves as a support end, and the support ends of all the support rods are located in the same plane and form a support surface for supporting the bottom plate of the square shell; The first limiting mechanism includes at least two first limiting rods, which are fixed on the mounting plate at intervals along the second direction, and the second limiting mechanism includes at least one second limiting rod, which is fixed on the mounting plate.

3. The square shell universal bracket according to claim 2, characterized in that: At least two of the support rods, at least two of the first limit rods and at least one of the second limit rods are combined to form two limit support rod groups, and the two limit support rod groups are arranged at intervals along the second direction; the two limit support rod groups each include a mounting block and at least one support rod and a first limit rod, the support rod and the first limit rod are fixedly arranged on the mounting block, the first limit rod is arranged at intervals along the first direction on one side of the support rod, the mounting block is fixed on the mounting plate, and one of the limit support rod groups also includes a second limit rod, the second limit rod is arranged on the mounting block, and the second limit rod is arranged at intervals along the second direction on the side of the support rod included in the limit support rod group away from the other limit support rod group.

4. The square shell universal bracket according to claim 3, characterized in that: The support rods and the first limit rod included in the same limit support rod group are arranged on the same straight line along the first direction.

5. The square shell universal bracket according to claim 4, characterized in that: The support rod, the first limiting rod and the second limiting rod are arranged in parallel.

6. The square shell universal bracket according to claim 3, characterized in that: The position-limiting support rod group further includes a connecting piece, and the plurality of support rods included in the same position-limiting support rod group are fixedly connected as one body via the connecting piece.

7. The square shell universal bracket according to claim 3, characterized in that: The mounting block is detachably disposed on the mounting plate.

8. A fully automatic square shell high-speed cleaning device, comprising a cleaning mechanism, a conveying mechanism and a first square shell fixing mechanism, wherein the cleaning mechanism has a cleaning tank for accommodating a liquid cleaning system, the first square shell fixing mechanism is fixed on the conveying mechanism, a part of the conveying mechanism is arranged in the cleaning tank, and the first square shell fixing mechanism can enter and leave the cleaning tank in a selected direction under the drive of the conveying mechanism, characterized in that: The first square shell fixing mechanism is a square shell universal bracket according to any one of claims 1-7.

9. The fully automatic square shell high-speed cleaning equipment according to claim 8 is characterized in that: The conveying mechanism includes a driving mechanism and two parallelly arranged ring chains, the driving mechanism is transmission-connected to the ring chains, the square shell universal bracket is arranged between the two ring chains, and the mounting plates are respectively fixedly connected to the two ring chains, wherein the part of the ring chain entering the cleaning tank is vertically arranged, and the part leaving the cleaning tank is inclined.

10. The fully automatic square shell high-speed cleaning equipment according to claim 9 is characterized in that: The mounting plate is arranged on a side of the ring-shaped chain close to its own ring-shaped center, and the position-limiting support structure is located on a side of the mounting plate facing away from the ring-shaped center of the ring-shaped chain.

11. The fully automatic square shell high-speed cleaning equipment according to claim 9 is characterized in that: The first square shell fixing mechanism comprises a plurality of square shell universal brackets, and the plurality of square shell universal brackets are arranged side by side on the two ring chains.

12. The fully automatic square shell high-speed cleaning equipment according to claim 8 or 9, characterized in that: The cleaning mechanism is an ultrasonic cleaning mechanism.

13. The fully automatic square shell high-speed cleaning equipment according to claim 8 or 9, characterized in that: Also includes: A second square shell fixing mechanism, a third square shell fixing mechanism and a square shell transfer mechanism, the second square shell fixing mechanism and the third square shell fixing mechanism are arranged on both sides of the cleaning mechanism along the conveying direction of the square shell, the second square shell fixing mechanism and the third square shell fixing mechanism both include the square shell universal bracket described in any one of claims 1-7, and the square shell transfer mechanism is used to transfer the square shell between the first square shell fixing mechanism and the second square shell fixing mechanism and the third square shell fixing mechanism.

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