CN220479899U - Multi-station corner cutting equipment for water tank die pressing plate - Google Patents

Abstract

The utility model discloses multi-station corner cutting equipment for a water tank die pressing plate, and belongs to the field of water tank die pressing plate processing. The cutting equipment comprises two sets of single-side cutting devices which are oppositely arranged, a plate channel is arranged between the two sets of single-side cutting devices, a front-end multi-station cutting assembly and a rear-end multi-station cutting assembly are arranged on each set of single-side cutting device, each of the front-end multi-station cutting assembly and the rear-end multi-station cutting assembly comprises at least two sets of single-station cutting mechanisms which are arranged along the front-back direction, and the single-station cutting mechanisms on the two sets of single-side cutting devices are in one-to-one correspondence. The utility model can adopt the truss robot to convey the plates, reduces the equipment input cost, and is convenient for the arrangement of the molding plate manufacturing production line; in addition, can select different cutting stations according to panel size flexibility, satisfy the corner cutting needs of the water tank moulded board of multiple specification, have advantages such as production efficiency is high, the practicality is strong.

Description

Multi-station corner cutting equipment for water tank die pressing plate

Technical Field

The utility model relates to a water tank die pressing plate machining device, in particular to multi-station corner cutting equipment for a water tank die pressing plate.

Background

The assembled water tank is formed by assembling a plurality of die pressing plates, and the die pressing plates are usually connected by bolts or welding, so that a certain concave-convex shape is needed to be formed by compression molding to improve the integral rigidity of the die pressing plates during manufacturing of the die pressing plates, and a flanging structure is needed to be formed at the peripheral edges of the die pressing plates so as to facilitate connection of the adjacent die pressing plates. In the actual production process, the stamping plate is formed by stamping a stainless steel plate, the plate for manufacturing the stamping plate is generally square or rectangular, and the dimension specifications are different according to the dimension of the stamping plate. Because the stamping plate needs to be subjected to flanging treatment, the stamping plate needs to be cut at four corner positions of the plate before flanging, and a square notch is usually cut, so that the stamping flanging of the plate is facilitated.

At present, most adopts the punching machine to cut the corner of water tank die platen panel, for example, "a square water tank die platen corner cutting device" disclosed in chinese patent application No. 201810422814.2, it includes the board, the lower mould subassembly, a frame, corner cutting drive assembly and last mould subassembly, the lower mould subassembly includes die holder and die, die holder fixed mounting is on the board, the die is equipped with four, four die even close-fitting embedding are installed on the die holder, frame fixed mounting is on the board, corner cutting drive assembly includes pneumatic cylinder and sliding plate, pneumatic cylinder fixed mounting is in frame top central point, the output of pneumatic cylinder and the upper end central point fixed connection of sliding plate, sliding plate and frame sliding connection, upper mould subassembly includes upper die base and square drift, upper die base fixed mounting is in the bottom central point of sliding plate, square drift is equipped with four, four square drifts even fixed mounting is on the upper die base. The square water tank template corner cutting device can finish corner cutting treatment of the square water tank template, but the following defects still exist:

1) The square water tank template corner cutting device is only suitable for cutting the corners of a die pressing plate with one specification and size, the applicable die pressing plate has great limitation, if the corners of the rectangular water tank template are required to be cut, the upper die assembly and the lower die assembly are required to be integrally replaced, even a punching machine with a larger size is required to be replaced, the practicability is poor, and the equipment input cost is high;

2) The square water tank template corner cutting device can only adopt a lateral upward blanking design, and generally needs to be matched with an automatic robot for loading and unloading, so that the equipment cost is increased.

Based on the defects of the existing corner cutting device, it is necessary to design a piece of board corner cutting equipment which can be suitable for various different specifications and sizes, so that the equipment investment cost of enterprises is reduced.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects in the prior art, and provides the multi-station corner cutting equipment for the water tank die pressing plate plates, by adopting the technical scheme of the utility model, a plate channel can be formed between two groups of opposite single-side cutting devices, so that the plates can be conveniently conveyed by using a truss robot, the feeding and discharging of a special multi-axis automatic robot are not needed, the equipment input cost is reduced, the arrangement of a die pressing plate manufacturing production line is facilitated, and the occupied space of the equipment is reduced; in addition, utilize front end multistation on the unilateral cutting device of every group to cut assembly and rear end multistation and cut the assembly and can realize the cutting of panel four corners, and can select different cutting stations in a flexible way according to the panel size, satisfied the corner that the water tank moulded board of multiple specification cuts needs, have advantages such as production efficiency is high, the practicality is strong.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model discloses multi-station corner cutting equipment for a water tank die pressing plate, which comprises two sets of single-side cutting devices which are oppositely arranged, wherein a plate channel for placing a plate is arranged between the two sets of single-side cutting devices, each set of single-side cutting device is provided with a front-end multi-station cutting assembly for cutting corners at the front end of the plate and a rear-end multi-station cutting assembly for cutting corners at the rear end of the plate, each front-end multi-station cutting assembly and each rear-end multi-station cutting assembly comprise at least two sets of single-station cutting mechanisms which are arranged along the front-rear direction, and the single-station cutting mechanisms on the two sets of single-side cutting devices are in one-to-one correspondence.

Furthermore, the number of the single-station cutting mechanisms in the front-end multi-station cutting assembly is equal to the number of the single-station cutting mechanisms in the rear-end multi-station cutting assembly.

Further, the single-side cutting device comprises a frame, and each group of single-station cutting mechanisms are arranged on the frame; the two sets of frames of the single-side cutting device are fixed or can be installed on the base in a mutually opposite adjusting manner.

Furthermore, the frame is provided with a notch corresponding to the cutting position of the corresponding single-station cutting mechanism, and the opening directions of the notches on the frame of the two groups of single-side cutting devices are opposite.

Still further, the frame has and cuts the position and is located the chip removal position that cuts the position lower part, simplex position cutting mechanism locates and cuts the position department.

Still further, simplex position cutting mechanism includes pneumatic cylinder, upper die base, drift and die, the cylinder body fixed mounting of pneumatic cylinder is in corresponding frame upper portion, the drive end of pneumatic cylinder is down and with upper die base fixed connection, the lower part of upper die base is installed to the drift, the die fixed mounting is on the die holder of frame, and the drift is relative from top to bottom with the die.

Furthermore, a connecting plate is fixedly arranged on the upper die holder, and a guide post matched with the machine frame in an up-down guiding manner is arranged on the connecting plate.

Furthermore, the lower die holder is provided with a blanking hole communicated with the blanking hole of the female die.

Further, at least one set of opposite single-station cutting mechanisms in the front end multi-station cutting assembly or the rear end multi-station cutting assembly of the two sets of single-side cutting devices is 135-degree cutting angle, at least one set of opposite single-station cutting mechanisms is 165-degree cutting angle, and the rest single-station cutting mechanisms are 90-degree cutting angle.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) The multi-station corner cutting equipment for the water tank die pressing plate comprises two groups of single-side cutting devices which are oppositely arranged, a plate channel can be formed between the two groups of single-side cutting devices which are oppositely arranged, so that the plate can be conveniently conveyed by using a truss robot, a special multi-axis automatic robot is not required for feeding and discharging, the equipment investment cost is reduced, the die pressing plate manufacturing production line is conveniently arranged, and the occupied space of the equipment is reduced; each group of single-side cutting devices are provided with a front-end multi-station cutting assembly for cutting the corners of the front end of the plate and a rear-end multi-station cutting assembly for cutting the corners of the rear end of the plate, each of the front-end multi-station cutting assembly and the rear-end multi-station cutting assembly comprises at least two groups of single-station cutting mechanisms arranged along the front-back direction, the single-station cutting mechanisms on the two groups of single-side cutting devices are in one-to-one correspondence, the front-end multi-station cutting assemblies and the rear-end multi-station cutting assemblies can realize the cutting of four corners of the plate, different cutting stations can be flexibly selected according to the size of the plate, the corner cutting requirements of a water tank molding plate with various specifications are met, and the advantages of high production efficiency, strong practicability and the like are achieved;

(2) According to the multi-station corner cutting equipment for the water tank die pressing plate, the number of the single-station cutting mechanisms in the front-end multi-station cutting assembly is equal to that of the single-station cutting mechanisms in the rear-end multi-station cutting assembly, so that plates with one specification can be just matched on each station, synchronous cutting of four corners can be realized, and the production efficiency is improved;

(3) The utility model relates to multi-station corner cutting equipment for a water tank die pressing plate, which comprises a single-side cutting device, a plurality of groups of single-station cutting mechanisms, a plurality of cutting mechanisms and a plurality of cutting mechanisms, wherein the single-side cutting device comprises a frame; the frames of the two groups of unilateral cutting devices are fixed or can be installed on the base in a mutually opposite adjusting way, so that the assembly of each group of single-station cutting mechanisms is convenient, and the equipment manufacturing precision is guaranteed; when the frames of the two groups of single-side cutting devices are arranged on the base in a mutually adjustable mode, a plurality of corner cutting stations are arranged in the length direction of the plate, the corner cutting positions can be properly adjusted according to the width of the plate, and corner cutting operation can be performed on some non-standard-specification die pressing plates, so that the application range of the equipment is greatly improved;

(4) According to the multi-station corner cutting equipment for the water tank die pressing plate, the notch corresponding to the cutting position of the corresponding single-station cutting mechanism is arranged on the rack, and the opening directions of the notch on the rack of the two groups of single-station cutting devices are opposite, so that two sides of the plate are positioned in the notch and correspond to the cutting position of the corresponding single-station cutting mechanism, the plate can conveniently circulate on the equipment, the rack is high in structural strength, and the working stability of each group of single-station cutting mechanisms is ensured;

(5) According to the multi-station corner cutting equipment for the water tank die pressing plate, the frame is provided with the cutting position and the chip removing position positioned at the lower part of the cutting position, the single-station cutting mechanism is arranged at the cutting position, and cut waste can directly enter the chip removing position, so that the waste is conveniently discharged and collected;

(6) The utility model relates to multi-station corner cutting equipment for a water tank die plate, which comprises a single-station cutting mechanism, a cutting mechanism and a cutting mechanism, wherein the single-station cutting mechanism comprises a hydraulic cylinder, an upper die holder, a punch and a female die; in addition, the upper die holder is fixedly provided with a connecting plate, and the connecting plate is provided with a guide post which is matched with the machine frame in an up-down guiding way, so that the alignment accuracy of the punch and the female die is further ensured, and the blanking precision is ensured;

(7) According to the multi-station corner cutting equipment for the water tank die plate, at least one group of opposite single-station cutting mechanisms in the front-end multi-station cutting assembly or the rear-end multi-station cutting assembly of the two groups of single-side cutting devices are 135-degree cutting angles, at least one group of opposite single-station cutting mechanisms are 165-degree cutting angles, and the rest single-station cutting mechanisms are 90-degree cutting angles, so that the folding edge cutting angle requirements of different water tank die plates can be met, and the application range and the practicability of the equipment are further improved.

Drawings

FIG. 1 is a schematic perspective view of a multi-station corner cutting device for a water tank die plate material;

FIG. 2 is a schematic top view of a multi-station corner cutting apparatus for a water tank die platen plate according to the present utility model;

FIG. 3 is a schematic side view of a multi-station corner cutting apparatus for a water tank die platen plate according to the present utility model;

FIG. 4 is a schematic perspective view of a single-sided cutting device according to the present utility model;

FIG. 5 is a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A;

fig. 6 is a schematic view of a partial enlarged structure at K in fig. 5.

Reference numerals in the schematic drawings illustrate:

1. a single-side cutting device; 1-1, a frame; 1-1a, cutting position; 1-1b, chip removal position; 1-1-1, notch; 1-1-2, lower die holder; 1-1-3, blanking holes; 1-2A, a front-end multi-station cutting assembly; 1-2B, a rear end multi-station cutting assembly; 1-2, a single-station cutting mechanism; 1-2-1, a hydraulic cylinder; 1-2-2, upper die holder; 1-2-3 parts of punch head; 1-2-4 parts of female die; 1-2-5, guide post; 1-2-6, connecting plate; 2. a base; 3. a sheet passage; 4. a sheet material.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.

Examples (example)

Referring to fig. 1 to 4, a multi-station corner cutting device for a water tank die plate board in this embodiment includes two sets of single-side cutting devices 1 arranged oppositely, a board channel 3 for placing a board 4 is arranged between the two sets of single-side cutting devices 1, corners of the board 4 are located in the single-side cutting devices 1, and four corners of the board 4 can be cut by using the two sets of single-side cutting devices 1. The upper part of the plate channel 3 is free from shielding, the truss robot can be used for conveying the plates 4 in the plate channel 3, and a special multi-axis automatic robot is not required for feeding and discharging, so that the equipment input cost is reduced, the arrangement of a molding plate manufacturing production line is facilitated, and the equipment occupation space is reduced. Each group of single-side cutting devices 1 is provided with a front-end multi-station cutting assembly 1-2A for cutting the corners of the front end of the plate 4 and a rear-end multi-station cutting assembly 1-2B for cutting the corners of the rear end of the plate 4, each of the front-end multi-station cutting assemblies 1-2A and the rear-end multi-station cutting assemblies 1-2B comprises at least two groups of single-station cutting mechanisms 1-2 arranged along the front-back direction, the single-station cutting mechanisms 1-2 on the two groups of single-side cutting devices 1 are in one-to-one correspondence, the single-side cutting devices 1 arranged along the front-back direction of each group form different cutting stations, the cutting of four corners of the plate can be realized, different cutting stations can be flexibly selected according to the size of the plate, the corner cutting requirements of a water tank die pressing plate with various specifications are met, and the single-station cutting device has the advantages of high production efficiency, strong practicability and the like.

As shown in fig. 2, in the present embodiment, the number of the single-station cutting mechanisms 1-2 in the front-end multi-station cutting assembly 1-2A and the number of the single-station cutting mechanisms 1-2 in the rear-end multi-station cutting assembly 1-2B are equal, for example, the front-end multi-station cutting assembly 1-2A is provided with three groups of single-station cutting mechanisms 1-2, and then the rear-end multi-station cutting assembly 1-2B is also provided with three groups of single-station cutting mechanisms 1-2; the front end multi-station cutting assembly 1-2A is provided with four groups of single-station cutting mechanisms 1-2, and the rear end multi-station cutting assembly 1-2B is also provided with four groups of single-station cutting mechanisms 1-2. Therefore, plates of one specification can be just matched on each station, synchronous cutting of four corners can be realized, and the production efficiency is improved. Taking fig. 2 as an example, arrow "S" is the moving direction of the sheet material 4 in the sheet material passage 3, each group of single-station cutting mechanisms 1-2 is arranged along the S direction, and two groups of opposite single-station cutting mechanisms 1-2 perpendicular to the S direction form one cutting station, such as station (1), station (2) and station (3) in fig. 2, wherein the directions of the single-station cutting mechanisms 1-2 on the front-end multi-station cutting assembly 1-2A and the rear-end multi-station cutting assembly 1-2B are opposite, and are respectively used for cutting corners of two ends of the sheet material 4. The spacing between the adjacent single-station cutting mechanisms 1-2 in the front-end multi-station cutting assembly 1-2A can be equal or unequal, the spacing between the adjacent single-station cutting mechanisms 1-2 in the rear-end multi-station cutting assembly 1-2B can be equal or unequal, various different combinations can be formed by the front station and the rear station, taking the layout in fig. 2 as an example, three stations of the front-end multi-station cutting assembly 1-2A can be respectively formed into different combinations with three stations of the rear-end multi-station cutting assembly 1-2B, so that boards with different specifications can be cut, and the boards 4 can be cut in the front-end multi-station cutting assembly 1-2A and the rear-end multi-station cutting assembly 1-2B in two times according to different requirements, for example, the boards 4 can be cut in the station (1) of the front-end multi-station cutting assembly 1-2A and the station (3) of the rear-end multi-station cutting assembly 1-2B at the other end. According to different cutting angle shapes, each group of single-station cutting mechanisms 1-2 in the front end multi-station cutting assembly 1-2A and the rear end multi-station cutting assembly 1-2B can be designed into different cutting angle shapes, and the corner cutting applicability is further enriched. In a word, according to the different size specifications and cutting angle shapes of the plate 4, different cutting stations can be selected in the multi-station corner cutting equipment to synchronously or step by step for cutting operation, so that the application range of the equipment is greatly improved.

Referring to fig. 1, the single-side cutting device 1 comprises a frame 1-1, and each group of single-station cutting mechanisms 1-2 are arranged on the frame 1-1; the frames 1-1 of the two groups of unilateral cutting devices 1 are fixed or can be installed on the base 2 in a mutually opposite adjusting way. Thus, the assembly of each group of single-station cutting mechanisms 1-2 is convenient, and the equipment manufacturing precision is ensured; when the frames 1-1 of the two groups of single-side cutting devices 1 are fixed on the base 2, the whole structure is stable and reliable, the cutting device can be suitable for cutting angles of die pressing plates with common width sizes, when the frames 1-1 of the two groups of single-side cutting devices 1 are installed on the base 2 in a way of being capable of being adjusted in opposite directions, a plurality of cutting angle stations are arranged in the length direction of the plate 4, the cutting angle positions can be properly adjusted according to the width of the plate 4, and the cutting angle operation can be performed on the die pressing plates with non-standard specifications, so that the application range of equipment is greatly improved. The adjustable structure of the frame 1-1 on the base 2 may be designed in the prior art, such as a ball screw, etc., and will not be described herein. In addition, the notch 1-1-1 corresponding to the cutting position of the corresponding single-station cutting mechanism 1-2 is arranged on the frame 1-1, the notch 1-1-1 can be U-shaped, the opening directions of the notches 1-1-1 on the frames 1-1 of the two groups of single-side cutting devices 1 are opposite, so that two sides of the plate 4 are positioned in the notch 1-1-1 and correspond to the cutting position of the corresponding single-station cutting mechanism 1-2, the plate is convenient to circulate on equipment, the influence of the notch 1-1 on the strength of the frame 1-1 is small, the frame 1-1 can adopt integral welding pieces, the structural strength is high, and the working stability of each group of single-station cutting mechanisms is ensured.

As shown in fig. 1, 3 and 4, in the present embodiment, the frame 1-1 has a cutting position 1-1a and a chip removing position 1-1b located at the lower part of the cutting position 1-1a, and the single-station cutting mechanism 1-2 is disposed at the cutting position 1-1a, so that the cut waste material can directly enter the chip removing position 1-1b below, thereby facilitating the discharge and collection of the waste material. Referring to fig. 5 and 6, in this embodiment, the single-station cutting mechanism 1-2 includes a hydraulic cylinder 1-2-1, an upper die holder 1-2-2, a punch 1-2-3, and a die 1-2-4, wherein a cylinder body of the hydraulic cylinder 1-2-1 is fixedly installed at an upper portion of a corresponding frame 1-1, a driving end of the hydraulic cylinder 1-2-1 is downward and fixedly connected with the upper die holder 1-2-2, the punch 1-2-3 is installed at a lower portion of the upper die holder 1-2-2, the die 1-2-4 is fixedly installed on a lower die holder 1-1-2 of the frame 1-1, and the punch 1-2-3 is vertically opposite to the die 1-2-4. The cross section shape of the punch head 1-2-3 is matched with the cross section shape of the die 1-2-4, and the punch head 1-2-3 can extend into the die 1-2-4 to shear the plate under the action of the hydraulic cylinder 1-2-1. The punch head 1-2-3 and the die 1-2-4 are of detachable structures, and the worn punch head 1-2-3 and the die 1-2-4 can be replaced or the punch head 1-2-3 and the die 1-2-4 with different cutting shapes can be replaced according to the requirement. The lower die holder 1-1-2 is a horizontal transverse plate, the frame 1-1 is divided into a cutting position 1-1a and a chip removal position 1-1b, and the vertical plates are arranged on the frame 1-1 between the adjacent single-station cutting mechanisms 1-2 for separation, so that the structural strength of the lower die holder 1-1-2 is improved. As shown in FIG. 6, the lower die holder 1-1-2 is also provided with a blanking hole 1-1-3 communicated with the blanking hole of the female die 1-2-4. Further as shown in fig. 5 and 6, in order to improve the matching precision of the punch head 1-2-3 and the female die 1-2-4, a connecting plate 1-2-6 is fixedly arranged on the upper die holder 1-2-2, and a guide post 1-2-5 which is matched with the frame 1-1 in an up-down guiding manner is arranged on the connecting plate 1-2-6, so that the alignment precision of the punch head 1-2-3 and the female die 1-2-4 is further ensured, and the blanking precision is ensured.

In this embodiment, the front end multi-station cutting assembly 1-2A or the rear end multi-station cutting assembly 1-2B of the two sets of single-side cutting devices 1 have at least one set of opposite single-station cutting mechanisms 1-2 with 135-degree cutting angles, at least one set of opposite single-station cutting mechanisms 1-2 with 165-degree cutting angles, and the rest single-station cutting mechanisms 1-2 with 90-degree cutting angles, so that the requirements of the folded edge cutting angles of different water tank molding plates can be met, and the application range and the practicability of the device are further improved. Of course, according to different needs of the flanging angle, a plurality of groups of corner cutting punches and female die combinations with different angles can be arranged.

Referring to fig. 1, in the multi-station corner cutting device for a water tank die plate, a truss robot is used to drive a plate 4 to move in a plate channel 3, so that the plate 4 moves to a corresponding station of the cutting device, then a hydraulic cylinder 1-2-1 of a single-station cutting mechanism 1-2 of the corresponding station acts to drive a punch 1-2-3 to move downwards, and a die 1-2-4 is matched to realize cutting of the plate corners, and the cut plate 4 is driven by the truss robot to move to a next processing station for subsequent molding of the die plate.

According to the multi-station corner cutting equipment for the water tank die pressing plate, a plate channel can be formed between two sets of oppositely arranged single-side cutting devices, so that the plates are conveniently conveyed by using a truss robot, a special multi-axis automatic robot is not required for feeding and discharging, the equipment input cost is reduced, the die pressing plate manufacturing production line is conveniently arranged, and the occupied space of the equipment is reduced; in addition, utilize front end multistation on the unilateral cutting device of every group to cut assembly and rear end multistation and cut the assembly and can realize the cutting of panel four corners, and can select different cutting stations in a flexible way according to the panel size, satisfied the corner that the water tank moulded board of multiple specification cuts needs, have advantages such as production efficiency is high, the practicality is strong.

The utility model and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the utility model. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the spirit of the present utility model, and all the structural manners and the embodiment are considered to be within the protection scope of the present utility model.

Claims (9)

1. A multi-station corner cutting device for a water tank die pressing plate is characterized in that: including two sets of unilateral cutting device (1) that set up relatively, two sets of unilateral cutting device (1) are therebetween have panel passageway (3) that are used for placing panel (4), every group unilateral cutting device (1) are last all to be equipped with front end multistation cutting assembly (1-2A) that are used for cutting the corner of panel (4) front end and be used for cutting rear end multistation cutting assembly (1-2B) of panel (4) rear end, front end multistation cutting assembly (1-2A) and rear end multistation cutting assembly (1-2B) all include at least two sets of simplex position cutting mechanism (1-2) that set up along the fore-and-aft direction, two sets of simplex position cutting mechanism (1-2) one-to-one on unilateral cutting device (1).

2. The water tank die platen plate multi-station corner cutting apparatus of claim 1, wherein: the number of the single-station cutting mechanisms (1-2) in the front-end multi-station cutting assembly (1-2A) is equal to the number of the single-station cutting mechanisms (1-2) in the rear-end multi-station cutting assembly (1-2B).

3. The water tank die platen plate multi-station corner cutting apparatus of claim 1, wherein: the unilateral cutting device (1) comprises a frame (1-1), and each group of single-station cutting mechanisms (1-2) are arranged on the frame (1-1); the frames (1-1) of the two groups of single-side cutting devices (1) are fixedly or oppositely adjustably arranged on the base (2).

4. A water tank die platen plate multi-station corner cutting apparatus as claimed in claim 3, wherein: the machine frame (1-1) is provided with a notch (1-1-1) corresponding to the cutting position of the corresponding single-station cutting mechanism (1-2), and the opening directions of the notches (1-1-1) on the machine frame (1-1) of the two groups of single-side cutting devices (1) are opposite.

5. A water tank die platen plate multi-station corner cutting apparatus as claimed in claim 3, wherein: the machine frame (1-1) is provided with a cutting position (1-1 a) and a chip removal position (1-1 b) positioned at the lower part of the cutting position (1-1 a), and the single-station cutting mechanism (1-2) is arranged at the cutting position (1-1 a).

6. The water tank die platen plate multi-station corner cutting apparatus according to any one of claims 1 to 5, wherein: the single-station cutting mechanism (1-2) comprises a hydraulic cylinder (1-2-1), an upper die holder (1-2-2), a punch (1-2-3) and a female die (1-2-4), wherein a cylinder body of the hydraulic cylinder (1-2-1) is fixedly arranged on the upper portion of a corresponding frame (1-1), a driving end of the hydraulic cylinder (1-2-1) faces downwards and is fixedly connected with the upper die holder (1-2-2), the punch (1-2-3) is arranged on the lower portion of the upper die holder (1-2-2), the female die (1-2-4) is fixedly arranged on a lower die holder (1-1-2) of the frame (1-1), and the punch (1-2-3) is opposite to the female die (1-2-4) from top to bottom.

7. The water tank die platen plate multi-station corner cutting apparatus of claim 6, wherein: the upper die holder (1-2-2) is fixedly provided with a connecting plate (1-2-6), and the connecting plate (1-2-6) is provided with a guide pillar (1-2-5) which is matched with the frame (1-1) in an up-down guiding way.

8. The water tank die platen plate multi-station corner cutting apparatus of claim 6, wherein: the lower die holder (1-1-2) is provided with a blanking hole (1-1-3) communicated with the blanking hole of the female die (1-2-4).

9. The water tank die platen plate multi-station corner cutting apparatus of claim 6, wherein: at least one group of opposite single-station cutting mechanisms (1-2) in the front end multi-station cutting assembly (1-2A) or the rear end multi-station cutting assembly (1-2B) of the two groups of single-side cutting devices (1) are at a cutting angle of 135 degrees, at least one group of opposite single-station cutting mechanisms (1-2) are at a cutting angle of 165 degrees, and the rest single-station cutting mechanisms (1-2) are at a cutting angle of 90 degrees.