CN211542221U - Water gap cutting device - Google Patents

Abstract

The utility model relates to a cut mouth of a river device, include: go up mould subassembly and lower mould subassembly. Go up the mould subassembly and include: a blanking unit and an upper driving unit; the blank unit includes: the device comprises a driving plate, an upper cutter and a prepressing plate; a first elastic piece is arranged between the driving plate and the prepressing plate; the extrusion surface of the prepressing plate is arranged in a profiling structure; the lower die assembly includes: a positioning unit; the positioning unit includes: a positioning seat and a lower cutter; the bearing surface of the positioning seat is arranged in a profiling structure; the lower cutter is used for separating a water gap of the workpiece from the positioning seat; the lower cutter is provided with a bayonet for positioning a water gap of a workpiece. Above-mentioned cut mouth of a river device utilizes the positioning seat of profile modeling to fix a position the work piece, sets up the lower cutter that can fix a position the mouth of a river of work piece accuracy, compresses tightly the back on the positioning seat through the pre-compressed plate of profile modeling with the work piece, utilizes the mouth of a river of last cutter with the work piece to cut, realizes mechanized operation, improves work efficiency to the shape and the position of the mouth of a river that cuts are stable and accurate, are favorable to the quality management and control of product.

Description

Water cutting device

technical field

The utility model relates to the technical field of industrial processing equipment, in particular to a water cutting device.

Background technique

In industrial production, the injection molding process is often used to make workpieces. The hot-melt plastic material is injected into the molding mold under pressure, and the plastic material is cooled and formed in the molding cavity of the molding mold to obtain a workpiece with a preset shape. Based on the requirements of runner design or positioning, the workpiece often has redundant nozzles after injection molding. Therefore, after the workpiece is injection-molded, the nozzle on the workpiece needs to be cut off.

The traditional nozzle cutting is mainly manual cutting after the workpiece is released from the mold. The disadvantage of this method of runner cutting is that manual operation is prone to fatigue, resulting in reduced work efficiency, and the runner cutting will fluctuate due to the proficiency of the worker and the current operating state, resulting in the shape and position of the runner to be cut. It will be ever-changing, which is not conducive to the quality control of products.

Utility model content

Based on this, the utility model provides a nozzle device, which utilizes a contoured positioning seat to position the workpiece, and a lower cutter that can precisely locate the nozzle of the workpiece is provided, and the contoured pre-pressing plate presses the workpiece on the positioning seat. After loading, use the upper cutter to cut the nozzle of the workpiece to realize mechanized operation and improve work efficiency, and the shape and position of the nozzle to be cut are stable and accurate, which is conducive to product quality control.

A water cutting device, comprising:

The upper die assembly; the upper die assembly includes: a cutting unit and an upper driving unit connected to the cutting unit; the cutting unit includes: a driving board connected to the upper driving unit, an upper cutter connected to the driving board, and a a pre-pressing plate; a first elastic member is arranged between the driving plate and the pre-pressing plate; the extrusion surface of the pre-pressing plate is a profiling structure; and

The lower die assembly is arranged relative to the upper die assembly; the lower die assembly includes: a positioning unit; the positioning unit includes: a positioning seat arranged parallel to the pre-pressing plate and a lower cutting knife connected to the positioning seat; the bearing surface of the positioning seat is provided with a profiling structure The lower cutter is arranged opposite to the upper cutter; the lower cutter is used to separate the nozzle of the workpiece from the positioning seat; the lower cutter is provided with a bayonet for positioning the nozzle of the workpiece.

The above-mentioned nozzle device, when working, places the workpiece in the positioning unit of the lower die assembly, locates the workpiece through the contoured positioning seat, and uses the lower cutter to separate the nozzle of the workpiece from the positioning seat, and the nozzle of the workpiece is blocked. The bayonet on the lower cutter snaps into place. Next, the upper drive unit in the upper die assembly drives the drive plate to move down, and then drives the upper cutter and the pre-pressing plate to move down. The profiling pre-pressing plate contacts the workpiece before the upper cutter and presses the workpiece on the positioning seat, and with the further downward movement of the driving plate, the first elastic member is compressed, and the upper cutter cuts the nozzle of the workpiece. Through the above design, the workpiece is positioned by the contoured positioning seat, and a lower cutter that can precisely locate the nozzle of the workpiece is provided. The cutting nozzle can realize mechanized operation, improve work efficiency, and the shape and position of the nozzle to be cut are stable and accurate, which is conducive to the quality control of products.

In one of the embodiments, the driving board is further provided with a guide pin, and the positioning unit is provided with a guide hole for connecting the guide pin; or, the positioning unit is further provided with a guide pin, and the drive board is provided with a guide pin for connecting guide hole. Before the upper cutter and the lower cutter are engaged, the guide pin and the guide hole are connected first, so as to ensure that the upper cutter and the lower cutter can be accurately engaged.

In one embodiment, the upper cutter comprises: an upper blade located outside the driving plate, a first adjustable bolt inserted between the upper blade and the driving plate, and a second elastic bolt located between the upper blade and the driving plate The lower cutter includes: a lower blade located on the outer side of the positioning seat, a second adjustable bolt inserted between the lower blade and the positioning seat, and a third elastic piece located between the lower blade and the positioning seat; the bayonet is arranged on the on the lower blade. Through the first adjustable bolt and the second elastic piece, the position of the upper blade can be adjusted to match the position of the nozzle of the workpiece. Through the second adjustable bolt and the third elastic piece, the position of the lower blade can be adjusted to match the position of the nozzle of the workpiece. Moreover, the occlusal gap between the upper blade and the lower blade can also be adjusted to make the occlusion between the upper blade and the lower blade more tightly.

In one of the embodiments, the inner side of the upper blade is provided with a first escape groove for inserting the cutting edge of the lower blade; the outer side of the lower blade is provided with a second escape groove for inserting the cutting edge of the upper blade. When the upper cutter and the lower cutter are engaged, the cutting edge of the upper cutting edge is inserted into the second escape groove of the lower cutting edge, and the cutting edge of the lower cutting edge is inserted into the first escape groove of the upper cutting edge. The lower blade bites tightly.

In one of the embodiments, the outer side of the lower blade is provided with a receiving table for supporting the nozzle of the workpiece; the material receiving table is located on the outer side of the bayonet. When cutting the nozzle of the workpiece, the support table can support the nozzle of the workpiece, so that the nozzle can be stably subjected to force and easier to fall off when being cut.

In one of the embodiments, the lower die assembly further includes: a traverse unit connected to the positioning unit; the traverse unit includes: a sliding seat connected to the positioning seat and a lower driver connected to the sliding seat. The lower drive of the traverse unit can drive the sliding seat to move horizontally, thereby driving the positioning unit to move horizontally, so as to facilitate loading and unloading.

In one embodiment, the traverse unit further includes: a limiter; the limiter is located on the moving track of the sliding seat and is used to limit the position of the sliding seat when the sliding seat moves to the lower part of the upper mold assembly. In order to make the sliding seat stay under the upper die assembly accurately, a limiter is provided to carry out physical limitation.

In one embodiment, the traverse unit further includes: a plurality of buffers; the buffers are distributed on both ends of the moving stroke of the sliding seat. The buffering element acts as a buffer to prevent the sliding seat from damaging the driver or rigidly colliding with other components due to inertial action when the carriage travels to both ends of the moving stroke.

In one of the embodiments, the sliding seat is provided with a discharging chute; the lower die assembly is further provided with a feeding box located under the discharging chute. When the nozzle of the workpiece is cut and dropped, it can fall into the receiving box through the discharge chute, which is convenient for waste recycling.

In one of the embodiments, the traverse unit further includes: a sensor electrically connected to the upper driver; the sensor is used to detect the position of the carriage and to send an activation electrical signal to the upper driver when the carriage moves below the upper die assembly. Using the sensor, when the sliding seat reaches the lower part of the upper die assembly, a starting electrical signal can be sent to the upper driver, so as to link the traverse unit with the upper driving unit, and improve the automation degree and the reliability of the equipment.

Description of drawings

1 is a schematic diagram of a water-cutting device according to Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of another perspective view of the water cutting device shown in FIG. 1;

3 is a schematic diagram of a material cutting unit of an upper die assembly in the nozzle device shown in FIG. 1;

FIG. 4 is a schematic diagram of another viewing angle of the material cutting unit shown in FIG. 3;

Fig. 5 is the exploded schematic diagram of the cutting unit shown in Fig. 3;

6 is a schematic diagram of a positioning unit of a lower die assembly in the runner device shown in FIG. 1;

FIG. 7 is a schematic diagram of another viewing angle of the positioning unit shown in FIG. 6;

8 is an exploded schematic view of the positioning unit shown in FIG. 6;

Fig. 9 is the schematic diagram when the upper cutter shown in Fig. 1 and the lower cutter are engaged;

Fig. 10 is the use state diagram of the water cutting device shown in Fig. 1;

Fig. 11 is an enlarged schematic view of part A in the water cutting device shown in Fig. 10;

FIG. 12 is a schematic diagram of the water cutting device according to the second embodiment of the present invention.

The meanings of the symbols in the accompanying drawings are:

(100, 100a) - water cutting device;

10-upper die assembly, 11-cutting unit, 111-drive plate, 1111-guide pin, 112-upper cutter, 1121-upper blade, 11211-first escape groove, 1122-first adjustable bolt , 1123-second elastic member, 113-pre-pressing plate, 114-first elastic member, 115-guide rod, 12-upper drive unit, 121-upper driver, 122-slide plate, 123-guide post;

20-lower die assembly, 21-positioning unit, 211-positioning seat, 212-lower cutter, 2121-lower blade, 21211-bayonet, 21212-second avoidance groove, 21213-bearing table, 2122-second Adjustable bolt, 2123-Third elastic piece, 22-Transverse unit, 221-Slide seat, 2211-Discharge chute, 2212-Guide hole, 222-Lower driver, 223-Linear guide rail, 224-Limiting piece, 225-buffer, 23-joint box;

30 - protective cover;

40- electric control box;

200 - Artifacts.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the related drawings. The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

Example 1

As shown in FIG. 1 to FIG. 11 , it is a water cutting device 100 according to an embodiment of the present invention.

As shown in FIG. 1 and FIG. 2 , the nozzle device 100 includes: an upper mold assembly 10 and a lower mold assembly 20 disposed opposite to the upper mold assembly 10. The lower die assembly 20 is used for positioning the workpiece 200 , and the upper die assembly 10 is used to cooperate with the lower die assembly 20 to cut the nozzle of the workpiece 200 .

Hereinafter, on the basis of FIGS. 1 and 2 , the above-mentioned water cutting device 100 will be further described with reference to FIGS. 3 to 10 .

As shown in FIG. 2 , the upper die assembly 10 includes: a cutting unit 11 and an upper driving unit 12 connected to the cutting unit 11 . The cutting unit 11 is used for cutting the nozzle of the workpiece 200 , and the upper driving unit 12 is used for driving the cutting unit 11 to work.

Further, as shown in FIGS. 3 to 5 , in this embodiment, the cutting unit 11 includes: a driving board 111 connected to the upper driving unit 12 , an upper cutting knife 112 connected to the driving board 111 , and a Pre-press plate 113 . Wherein, a first elastic member 114 is provided between the driving plate 111 and the pre-pressing plate 113 . The pressing surface of the pre-pressing plate 113 is provided in a profiling structure. In this embodiment, in this embodiment, the first elastic member 114 is a spring. In other embodiments, the spring can also be replaced with an elastic rubber block, or an elastic sheet, or other types of elastic devices.

In addition, in this embodiment, as shown in FIG. 5 , in this embodiment, the material cutting unit 11 further includes: a guide rod 115 passing through between the driving plate 111 and the pre-pressing plate 113 , the guide rod 115 is used for Guide the action of the pre-pressing plate 113 . Further, the above-mentioned first elastic member 114 can be sleeved on the guide rod 115 .

As shown in FIG. 2 , in this embodiment, the upper driving unit 12 includes: an upper driver 121 connected to the driving board 111 , a sliding plate 122 passing through the driving board 111 , and a guide post 123 passing through the sliding plate 122 . The upper driver 121 is used to drive the driving board 111 to move, and the moving track of the driving board 111 is restricted by the sliding plate 122 and the guide post 123 , thereby improving the stability and precision of the driving board 111 .

Further, in this embodiment, the upper driver 121 is a cylinder connected to the sliding seat 221. In other embodiments, the upper driver 121 may also be a motor, a lead screw connected to the motor, and a nut socketed with the lead screw, wherein, The nut is connected to the drive plate 111 .

As shown in FIG. 6 to FIG. 8 , the lower mold assembly 20 includes: a positioning unit 21 . The positioning unit 21 includes: a positioning seat 211 arranged parallel to the pre-pressing plate 113 and a lower cutter 212 connected to the positioning seat 211 . The bearing surface of the positioning seat 211 is provided with a profiling structure. The lower cutter 212 is disposed opposite to the upper cutter 112 . The lower cutter 212 is used to separate the nozzle of the workpiece 200 from the positioning seat 211 . The lower cutter 212 is provided with a bayonet 21211 for positioning the nozzle of the workpiece 200 .

In order to allow the upper cutter 112 and the lower cutter 212 to be adjusted according to the nozzle position of the workpiece 200 and to make the engagement between the upper cutter 112 and the lower cutter 212 more tightly, in this embodiment, as shown in FIG. 5 , the upper cutter 112 includes: an upper blade 1121 located outside the driving plate 111, a first adjustable bolt 1122 inserted between the upper blade 1121 and the driving plate 111, and a second elastic member 1123 located between the upper blade 1121 and the driving plate 111 . As shown in FIG. 8 , the lower cutter 212 includes: a lower blade 2121 located outside the positioning seat 211 , a second adjustable bolt 2122 inserted between the lower blade 2121 and the positioning seat 211 , and a second adjustable bolt 2122 located between the lower blade 2121 and the positioning seat 211 The third elastic member 2123 between them. The bayonet 21211 is disposed on the lower blade 2121 . Through the first adjustable bolt 1122 and the second elastic member 1123, the position of the upper cutting edge 1121 can be adjusted to match the position of the nozzle of the workpiece 200. Through the second adjustable bolt 2122 and the third elastic member 2123 , the position of the lower blade 2121 can be adjusted to match the position of the nozzle of the workpiece 200 . In addition, the occlusal gap between the upper blade 1121 and the lower blade 2121 can also be adjusted, so that the occlusion between the upper blade 1121 and the lower blade 2121 is tighter. In this embodiment, the second elastic member 1123 is a spring sleeved on the first adjustable bolt 1122 , and the third elastic member 2123 is a spring sleeved on the second adjustable bolt 2122 . In other embodiments, the spring can also be replaced with an elastic rubber block, or an elastic sheet, or other types of elastic devices.

Further, in this embodiment, as shown in FIG. 9 , which shows the engagement state (not fully engaged) of the upper cutter 112 and the lower cutter 212 , the inner side of the upper cutter 1121 is provided with a cutting edge for inserting the lower cutter 2121 The first escape groove 11211 of the part. As shown in FIG. 8 , the outer side of the lower blade 2121 is provided with a second escape groove 21212 for receiving and inserting the cutting edge of the upper blade 1121 . As shown in FIG. 9, when the upper cutter 112 and the lower cutter 212 are engaged, the cutting edge of the upper cutting edge 1121 is inserted into the second escape groove 21212 of the lower cutting edge 2121, and the cutting edge of the lower cutting edge 2121 is inserted into the upper cutting edge In the first escape groove 11211 of the blade 1121, the upper blade 1121 and the lower blade 2121 are tightly engaged.

In addition, as shown in FIG. 8 , the outer side of the lower blade 2121 is provided with a receiving table 21213 for supporting the nozzle of the workpiece 200 . The receiving table 21213 is located outside the bayonet 21211. When cutting the nozzle of the workpiece 200, the receiving table 21213 can support the nozzle of the workpiece 200, so that the nozzle can be stably subjected to force and easier to fall off when being cut.

Considering that when the space between the upper mold assembly 10 and the lower mold assembly 20 is small, the loading and unloading of the workpiece 200 will become very difficult. Therefore, as shown in FIG. 1 and FIG. 2 , in this embodiment, the lower mold The mold assembly 20 may further include: a traverse unit 22 connected to the positioning unit 21 . The traverse unit 22 includes: a sliding seat 221 connected to the positioning seat 211 and a lower driver 222 connected to the sliding seat 221 . The sliding seat 221 can be driven to move horizontally by the lower driver 222 of the traverse unit 22, thereby driving the positioning unit 21 to move horizontally, so as to facilitate loading and unloading. In this embodiment, the lower driver 222 is a cylinder connected to the sliding seat 221. In other embodiments, the lower driver 222 can also be a motor, a lead screw connected to the motor, and a nut socketed with the lead screw, wherein the nut and the slide The seat 221 is connected.

In addition, in order to improve the stability and precision of the movement of the sliding seat 221, in this embodiment, the traverse unit 22 further includes: a linear guide rail 223 that is slidably connected to the sliding seat 221.

As shown in FIG. 1 , in this embodiment, the traverse unit 22 may further include: a limiting member 224 . The limiting member 224 is located on the moving track of the sliding seat 221 and is used to limit the position of the sliding seat 221 when the sliding seat 221 moves to the lower part of the upper die assembly 10 . In order to make the sliding seat 221 stay under the upper mold assembly 10 accurately, a limiter 224 is provided for physical limitation.

Further, in this embodiment, the limiting member 224 is a third adjustable bolt, and the limited position of the sliding seat 221 can be adjusted by rotating the third adjustable bolt.

In addition, the traverse unit 22 may further include: a plurality of buffers 225 . The buffer members 225 are distributed at both ends of the moving stroke of the sliding seat 221. The buffers 225 play a buffering role to prevent the sliding seat 221 from damaging the driver or rigidly colliding with other components due to inertia when the sliding seat 221 travels to both ends of the moving stroke. For example, in this embodiment, hydraulic shock absorbers are provided at both ends of the movement stroke of the carriage 221 .

In order to facilitate the recovery of the nozzle of the workpiece 200 , as shown in FIG. 2 , in this embodiment, the sliding seat 221 is provided with a discharge chute 2211 . The lower die assembly 20 is also provided with a material receiving box 23 located below the discharging chute 2211 . When the nozzle of the workpiece 200 is cut and dropped, it can fall into the receiving box 23 through the discharge chute 2211, which is convenient for waste recycling.

In this embodiment, for the linkage between the traverse unit 22 and the upper driving unit 12 , when the traverse unit 22 reaches a preset position, that is, when the sliding seat 221 reaches the bottom of the upper die assembly 10 , the upper driving unit can be set. 12 Start the action.

In order to improve the reliability of the device action, in other embodiments, the traverse unit 22 may further include: a sensor electrically connected to the driver 121 . The sensor is used to detect the position of the carriage 221 and to send an activation electrical signal to the upper driver 121 when the carriage 221 moves to the lower side of the upper die assembly 10. Using the sensor, when the sliding seat 221 reaches the lower part of the upper die assembly 10, a starting electrical signal can be sent to the upper driver 121 to link the traverse unit 22 with the upper driver unit 12, thereby improving the degree of automation and the reliability of equipment operation. Wherein, the sensor can be a non-contact sensor, such as a proximity switch or a grating, and the sensor can also be a contact sensor, such as a mechanical sensor.

In order to ensure the accuracy of the mold clamping between the upper mold assembly 10 and the lower mold assembly 20, as shown in FIG. 2, in this embodiment, the driving board 111 is further provided with a guide pin 1111, and the positioning unit 21 is provided with a plug-in guide The guide hole 2212 of the positive pin 1111. Specifically, in this embodiment, the guide hole 2212 is provided on the sliding seat 221 . Before the upper cutter 112 and the lower cutter 212 are engaged, the alignment pin 1111 and the alignment hole 2212 are connected and inserted first, so as to ensure that the upper cutter 112 and the lower cutter 212 can be accurately engaged. It can be understood that in other embodiments, the setting positions of the guide pins 1111 and the guide holes 2212 can also be reversed, that is, the positioning unit 21 is provided with the guide pins 1111, and the driving board 111 is provided with the plug-in guide pins The guide holes 2212 of the 1111 , specifically, the guide pins 1111 can be arranged on the sliding seat 221 , and the guide holes 2212 are arranged on the driving board 111 .

10 and 11, when working, the workpiece 200 is placed in the positioning unit 21 of the lower die assembly 20, the workpiece 200 is positioned by the profiling positioning seat 211, and the lower cutter is used for the positioning of the workpiece 200. 212 separates the nozzle of the workpiece 200 from the positioning seat 211 , and the nozzle of the workpiece 200 is clamped and positioned by the bayonet 21211 on the lower cutter 212 . Next, the upper drive unit 12 in the upper die assembly 10 drives the drive plate 111 to move down, and further drives the upper cutter 112 and the pre-pressing plate 113 to move down. The profiling pre-pressing plate 113 contacts the workpiece 200 before the upper cutter 112 and presses the workpiece 200 on the positioning seat 211, and as the driving plate 111 moves down further, the first elastic member 114 is compressed, and the upper cutter 112 Nozzle for cutting workpiece 200. Through the above design, the workpiece 200 is positioned by the contoured positioning seat 211 , and a lower cutter 212 that can precisely locate the nozzle of the workpiece 200 is provided, and the workpiece 200 is pressed on the positioning seat 211 by the contoured pre-pressing plate 113 . , using the upper cutter 112 to cut the nozzle of the workpiece 200 to realize mechanized operation and improve work efficiency, and the shape and position of the nozzle to be cut are stable and accurate, which is conducive to product quality control.

Embodiment 2

As shown in FIG. 12 , it is a water cutting device 100a according to another embodiment of the present invention.

The difference between this embodiment and the first embodiment is that the water cutting device 100a in this embodiment further includes: a protective cover 30 disposed on the outer side of the upper mold assembly 10 and an electric control box disposed on one side of the upper mold assembly 10 40. Wherein, the protective cover 30 is used to prevent foreign objects from entering when the upper mold assembly 10 and the lower mold assembly 20 are clamped, thereby improving the safety of equipment operation. The electric control box 40 is used to provide power for the upper mold assembly 10 and the lower mold assembly 20 .

Other structures of this embodiment are the same as those of the first embodiment, and the beneficial effects of the first embodiment can also be achieved.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.

The above examples only represent the embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

1. a nozzle device, characterized in that: comprising: an upper die assembly; the upper die assembly includes: a material cutting unit and an upper driving unit connected to the material cutting unit; the material cutting unit includes: a driving board connected to the upper driving unit, a driving board connected to the material cutting unit The upper cutter, and the pre-pressing plate connected to the driving plate; a first elastic member is arranged between the driving plate and the pre-pressing plate; the pressing surface of the pre-pressing plate is set in a profiling structure; and a lower mold assembly arranged opposite to the upper mold assembly; the lower mold assembly includes: a positioning unit; the positioning unit includes: a positioning seat arranged parallel to the pre-pressing plate and a lower cutter connected to the positioning seat; The bearing surface of the positioning seat is arranged in a profiling structure; the lower cutting knife is arranged opposite to the upper cutting knife; the lower cutting knife is used to separate the nozzle of the workpiece from the positioning seat; the lower cutting knife is provided with a The bayonet of the nozzle for positioning the workpiece. 2 . The water cutting device according to claim 1 , wherein the driving plate is further provided with a guide pin, and the positioning unit is provided with a guide hole for inserting the guide pin; or, the The positioning unit is further provided with a guide pin, and the drive board is provided with a guide hole for receiving the guide pin. 3 . The water cutting device according to claim 1 , wherein the upper cutting knife comprises: an upper cutting edge located outside the driving plate, a first cutting edge passing through between the upper cutting edge and the driving plate. 4 . an adjustable bolt, and a second elastic member located between the upper blade and the drive plate; the lower cutter comprises: a lower blade located on the outer side of the positioning seat, a lower blade disposed between the lower blade and the a second adjustable bolt between the positioning seats, and a third elastic piece between the lower blade and the positioning seat; the bayonet is arranged on the lower blade. 4 . The water cutting device according to claim 3 , wherein the inner side of the upper blade is provided with a first escape groove for connecting and inserting the cutting edge of the lower blade; the outer side of the lower blade is provided with a first escape groove. 5 . The second escape groove of the cutting edge portion of the upper blade is inserted. 5 . The nozzle device according to claim 3 , wherein the outer side of the lower blade is provided with a receiving table for supporting the nozzle of the workpiece; the material receiving table is located outside the bayonet. 6 . 6 . The nozzle device according to claim 1 , wherein the lower die assembly further comprises: a traverse unit connected to the positioning unit; the traverse unit comprises: a sliding unit connected to the positioning seat. 7 . A seat and a lower drive connected to the sliding seat. 7 . The water cutting device according to claim 6 , wherein the traverse unit further comprises: a limiter; the limiter is located on the movement track of the sliding seat and is used for the movement of the sliding seat. 8 . The seat restricts the position of the sliding seat when the seat moves below the upper mold assembly. 8 . The water cutting device according to claim 6 , wherein the traverse unit further comprises: a plurality of buffers; the buffers are distributed on both ends of the moving stroke of the sliding seat. 9 . 9 . The water cutting device according to claim 6 , wherein the sliding seat is provided with a discharge chute; and the lower die assembly is further provided with a material receiving box located below the discharge chute. 10 . 10 . The water cutting device according to claim 6 , wherein the upper driving unit comprises an upper driver, and the traverse unit further comprises: a sensor electrically connected to the upper driver; the sensor is used to detect the The position of the sliding seat is used to send a starting electrical signal to the upper driver when the sliding seat moves below the upper mold assembly.

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