CN111254235A

CN111254235A - Conveying system configured for leather cutting water jet cutter

Info

Publication number: CN111254235A
Application number: CN202010159701.5A
Authority: CN
Inventors: 周建来; 周子潇
Original assignee: Jiangsu Shankai Intelligent Technology Co Ltd
Current assignee: Jiangsu Shankai Intelligent Technology Co Ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-06-09
Anticipated expiration: 2040-03-10
Also published as: CN111254235B

Abstract

The invention discloses a conveying system configured for a leather cutting water jet cutter, which comprises a rack, wherein the rack is provided with a rubber roller set, flat plates are paved on the upper surfaces of two ends of the rack, a conveying belt is paved on the outer cylindrical surface of each rubber roller and the flat plates to form a circulating conveying belt, and the conveying belt comprises a conveying belt unit and a connecting joint; chain guide rails are arranged on two sides of the rack, chains are arranged in the chain guide rails and are driven by chain wheels at two ends of the rubber roller group, two side edges of the conveyor belt unit are connected with the chains, and the conveyor belt and the chains are supported on the rack through the rubber rollers and the flat plates to form a closed circulating conveyor chain; the material conveying system integrates feeding and cutting bearing platforms, a cut piece can be properly supported to guarantee cutting accuracy during working, water can be drained timely, and other functional systems of the water jet cutter, such as a visual identification system, can synchronously complete other work on a next piece of material during a period when the cutting machine of the water jet cutter cuts and processes the previous piece of material, so that time is greatly saved.

Description

Conveying system configured for leather cutting water jet cutter

Technical Field

The invention belongs to the technical field of water jet cutter conveying materials, and particularly relates to a conveying material system configured for a leather cutting water jet cutter.

Background

The water jet cutter conveying and feeding system is only used for matching with a water jet cutter for cutting soft materials, particularly for matching with a water jet cutter for cutting leather, and is irrelevant to a water jet cutter objective table for cutting common hard materials such as metal or glass.

Water jet cutting is a high-pressure water jet cutting technology. The high-pressure water is used as a knife, any curve can be cut and processed on any material, and the cutting method is a novel safe and environment-friendly cutting mode in recent years. The water jet cutter has many advantages, but due to the characteristics of the water jet cutter, various technical difficulties exist in specific use occasions, the popularization and the utilization of the water jet cutter are restricted, and a new structure needs to be continuously designed and created to adapt to various requirements of the water jet cutter, so that the water jet cutter is popularized and applied in various processing fields.

A common water knife or similar equipment is often used for processing hard and difficult-to-cut materials, a workpiece is arranged on a rigid workbench, most of the workbench is static during cutting, and a water knife cutting head (called a water knife head for short) moves to realize cutting motion. The water knife cuts soft materials, but the mode is not suitable for the actual situation of soft material cutting. Different from hard materials, the water jet cutter can cut soft materials at a high speed, particularly leather materials, the cutting speed can reach the magnitude of hundreds of meters per minute, and the cutting of one material can be completed within a few seconds. If only the water cutter head moves to cut, the workbench carries a workpiece to be processed in situ and does not move to complete processing, the cutting capability of the water cutter is not fully exerted, subsequent material loading needs to occupy special time, and the production efficiency has a large space.

And if the soft material is cut in the advancing process of the material, namely the material conveying system and the water jet cutting move simultaneously, the working efficiency can be greatly improved. The control technology of the multi-axis linkage has no problems at present, and the key point is to innovatively improve the structure of the machine, so that the conveying structure capable of realizing the control technology is provided. The main structure of this kind of water jet cutter has been disclosed in patent publication No. CN110815395A, and the patent name is that the identification and trimming device for two-dimensional irregular shape of soft material has been explained, but there are various innovative development spaces for its local or subsystem specific implementation and style structure. The invention aims to create a brand-new material conveying system completely different from the structure of the conventional workbench to better achieve the purpose of quickly cutting soft materials represented by leather by a water jet. For the convenience of explaining the structure and principle of the present invention, the general structure and operation principle of the water jet knife will be described as follows:

the water jet cutter is used for two-dimensional cutting and trimming of soft materials represented by leather. The water jet cutter can flatten the material to be trimmed on a conveyor belt of a machine, perform two-dimensional visual recognition on the profile and the surface condition of the material, automatically trim and cut the profile of the material by the water jet cutter, and automatically return the trimmed material to the position near the feeding position. The machine is configured with a self-developed special program for controlling, human eyes and hands are replaced, edge information (shapes, holes, surface scars and the like) is obtained, a cutting path is calculated, a trimming track is determined from visual identification, then trimming processing is carried out, a feeding position is returned, and the whole process is automatically completed. In addition, in the time period when the previous material is processed, the vision identification and the processing track calculation of the next material are calculated in an online parallel mode, and the efficiency is improved.

The basic components of the water jet cutter comprise main components such as a feeding machine and the like. The invention combines the mesh belt driving mechanism, the conveying mesh belt and accessories thereof in the structure to be called a conveying and feeding system. Improve general workstation for conveying material system, carry on the work piece by the conveyer belt, at the in-process that advances, the cutting motion is done simultaneously to the water jet scalpel head, and work efficiency then can improve by a wide margin. For this purpose, the implementation principle and the structural design of the matched conveying system have the following problems or difficulties:

the first is the contradiction between drainage and support. When the soft material is subjected to cutting stress, a solid lower support is required, otherwise, the material shifts to cause cutter back-off or inaccurate cutting; the soft materials such as leather are required not to be soaked by water during cutting, and the water cutter head is required to be used for cutting, and real-time drainage is required to be carried out where the soft materials are required. The common requirements of supporting and real-time drainage are difficult to meet by a workbench of a common machine.

Secondly, the rigidity and flexibility of the transmission system are contradictory. The conveying system carries the cut materials into a processing area, and if the cut materials are switched to a special supporting table for cutting, the time is wasted and the structure of the machine is complicated; if cutting is carried out on the transmission system, the cutting force impacts the processed material from top to bottom, at the same time, the support of the conveying system must be firm and powerful, the conveying system carries the material to advance continuously, the advancing is a circular motion (the reciprocating motion is not suitable), namely, the conveying system can return to an initial position after a certain period, and the moving mode needs to be flexible and elastic.

Again, there is a conflict between the load-bearing mode and the machining accuracy. When cutting and trimming are carried out, the position of a processed material in the horizontal and height directions needs to be stable and accurate, cutting is carried out on a general rigid workbench, and the workbench can guarantee the position precision of a processed workpiece. The processed workpiece is carried on a moving and elastic material conveying and feeding system, and the accuracy of the horizontal direction and the height direction of the processed workpiece is ensured during cutting, so that the material conveying and feeding system is required to be stable and reliable in operation.

Other problems such as precise matching of the operation of the material conveying and feeding system and the cutting motion of the water cutter head, acquisition of automatic control signals and the like are also solved, and the material conveying and feeding system can meet the requirements in the aspect of structure.

Disclosure of Invention

The invention aims to provide a material conveying system configured for a leather cutting water jet scalpel, and the brand-new material conveying system is matched with the water jet scalpel, so that the water jet scalpel can efficiently cut soft materials and is particularly suitable for leather materials.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the rubber roller group is arranged on the rack, flat plates are laid on the upper surfaces of two ends of the rack, the conveying belt is laid on the outer cylindrical surface of each rubber roller and on the flat plates to form a circulating conveying belt, and the conveying belt comprises a conveying belt unit and a connecting joint;

chain guide rails are installed on two sides of the rack, chains are installed in the chain guide rails and driven by chain wheels at two ends of the rubber roller group, two side edges of the conveyor belt unit are connected with the chains, the conveyor belt and the chains are supported on the rack through the rubber rollers and the flat plates to form a closed circulating conveyor chain, and feeding and cutting are carried into a whole.

Preferably the conveyor units bound the wire mesh, the non-elastic ends of the conveyor and the elastic ends of the conveyor.

Preferably, the edge-covered steel wire mesh is a stainless steel wire mesh, and the upper surface and the lower surface of the stainless steel wire mesh are covered with edges; the inelastic end of the conveyor belt comprises an end connecting piece, a mandrel and a gap K, and the elastic end of the conveyor belt comprises a transition connecting piece, industrial elastic cloth, a ring buckle, an end connecting piece and a gap K.

Preferably, attach fitting structure includes and connects body and attach fitting body both ends transition connecting plate, connects the body and includes U type connecting plate, intermediate lamella, two half U type upper cover plates, a plurality of hexagon socket head cap screws.

Preferably, the middle plate is arranged in the U-shaped connecting plate, the two half U-shaped upper cover plates are placed on the other side of the middle plate, the U-shaped connecting plate, the middle plate and the two half U-shaped upper cover plates are connected into a whole through two rows of hexagon socket head cap screws, two gaps and a gap are formed by the U-shaped connecting plate, the middle plate and the two half U-shaped upper cover plates together, the gap is used for accommodating a core shaft at the non-elastic end of the conveying belt and the elastic end of the conveying belt, and the connecting piece material extends out of the gap.

Preferably, the driving motor drives each rubber roller through a synchronous belt and a synchronous pulley group, each rubber roller is composed of a steel core roller, a rubber layer, a transmission chain wheel and a support shaft head, the support shaft head is installed on the rack through a bearing, the transmission chain wheels are installed at two ends of each rubber roller, and a chain is meshed with the transmission chain wheels at two ends of each rubber roller.

Preferably, chain guide rails are mounted on the upper surface and the lower surface of the machine frame, the guide rail seat forms an inner cavity for accommodating the guide rail, the chain is mounted on the machine frame through mounting screws, and the chain is transmitted into the cavity of the guide rail.

Preferably, a connecting joint must be arranged between two adjacent conveyor belt units, two ends of each connecting joint are respectively provided with a transition connecting plate which is arranged in the connecting plate through a connecting bolt, the connecting plate is connected with the L-shaped plate through a screw, two holes are formed in the other vertical edge of the L-shaped plate, pin shafts of the chain penetrate into the two holes, the other side of the L-shaped plate is fixed through an elastic locking sheet, and the L-shaped plate is tightly arranged on one chain link of the chain.

Preferably, a cleaning roller for cleaning the surface of the conveyor belt is arranged, and the roller surface of the cleaning roller is provided with a hairbrush which is contacted with the conveyor belt.

Preferably, a correlation sensor is arranged at a proper position on the lower layer of the frame, and when the conveyor belt connecting joint reaches the position above the correlation sensor, the sensor can be triggered to send a signal for starting and stopping the conveyor belt driving motor.

The invention has the following beneficial effects:

the novel conveying mechanism is suitable for the characteristics of the water knife, so that the water knife can be popularized and applied more and better in the field of processing of leather and other soft materials.

Two-dimensional cutting, generally the diaxon motion realizes processing, and this conveying material system can add the conveying material motion into cutting processing motion as the third axle, obviously improves water sword cutting efficiency.

According to the material conveying system, the feeding and cutting bearing platform are integrated, when the material conveying system works, other functional systems of the water jet cutter, such as a visual identification system, synchronously complete other works on the next material in the same time period when the cutting machine of the water jet cutter performs cutting processing on the previous material, and the time is greatly saved.

Drawings

FIG. 1 is a schematic illustration of a conveyor belt installation.

Fig. 2 is a schematic diagram of a power transmission structure.

Fig. 3 is a top partial schematic view of a conveyor system.

Fig. 4 is a schematic diagram of the conveyor belt unit composition.

Fig. 5 is a side view of the conveyor unit.

Fig. 6 is a schematic diagram of a covered wire mesh structure.

Fig. 7 is a non-elastic end side view of the belt.

FIG. 8 is a schematic representation of a flexible end of a conveyor belt

Fig. 9 is a conveyor belt elastic end side view.

FIG. 10 is a schematic view of a coupling structure of a conveyor belt.

FIG. 11 is a schematic view of the structure of the joint body

FIG. 12 is a schematic perspective view of a U-shaped connecting plate

FIG. 13 is a schematic diagram of a mid-plate configuration.

FIG. 14 is a schematic view of the connection of the splice to both ends of the conveyor belt unit

FIG. 15 is a schematic representation of the connection of a connector to two conveyor units.

Fig. 16 is a schematic view of the connection of the conveyor belt to the chain.

Fig. 17 is a schematic connection diagram of the connection plates.

FIG. 18 is a schematic view of the connection of the transition connection plate, the connection plate and the L-shaped plate

FIG. 19 is a schematic view of a chain guide configuration.

Fig. 20 is a schematic view of a rubber roller structure.

In the figure:

a frame 1; a rubber roller 2; a drive motor 3; a conveyor belt unit 4; a connecting joint 5; a chain 6; a chain guide 7; a bearing 8; a synchronous belt 9; a synchronous belt group 10; a cleaning roller 11; correlation sensor 12, connection plate 13; an L-shaped plate 14; a plate 15;

edge-covered steel wire mesh 41; the belt flexible end 42; the belt inelastic end 43; a mandrel 44; adopting a stainless steel wire mesh 411; wrapping 412; a head connector 431; transition piece 425, industrial elastic cloth 424, ring 423; a base connection 422; a transition connection plate 51; a half U-shaped upper cover plate 52; a hexagon socket countersunk head screw 53; an intermediate plate 54; a U-shaped connecting plate 55; a steel core roller 21, a rubber layer 22, a driving chain wheel 23 and a supporting shaft head 24.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

fig. 1 shows the manner in which the conveyor belt is mounted on the frame. The middle wire frame of the frame 1 is the working range of the water jet cutter for cutting and trimming, and in the working range, the water jet cutter head moves above the frame and sprays high-pressure water to cut the processed material. The frame 1 is here only shown by way of example and is not limited to this frame structure. A plurality of rubber rollers 2 are arranged on the frame 1 to form a rubber roller group, and the rubber rollers 2 can rotate on the frame. The conveying belt consisting of a plurality of groups of conveying belt units 4 and connecting joints 5 is paved on the outer cylindrical surface of each rubber roller to form a closed circulating chain. The upper surface at frame both ends, laid the flat board that has the same height with last generating line of last rubber roller, the conveyer belt passes through from dull and stereotyped upper surface, and the flat board plays to the conveyer belt support and forces smooth effect, and dull and stereotyped end is equipped with big chamfer and does benefit to the conveyer belt attach fitting and passes through. A cleaning roller 11 for cleaning the surface of the conveyor belt is arranged at a proper position below the conveyor belt, a hairbrush is arranged on the surface of the roller, the hairbrush is in contact with the conveyor belt, and the cleaning roller rotates during working to clean the surface of the passing conveyor belt. The horizontal position of the bearing 8 for supporting the rubber roller 2 on the frame can be adjusted, and the tension force of the conveyor belt can be adjusted. As shown in figure 2, the power transmission of the conveyor belt system is mainly realized by chain transmission, a chain 6 is meshed with the driving chain wheels 23 at the two ends of each rubber roller 2, the chain transmission fluctuation in the system relates to the cutting precision, so that chain guide rails 7 are arranged to improve the chain transmission precision, the chain guide rails 7 are arranged on the upper surface and the lower surface of a rack, the chain 6 passes through the inside of the chain guide rails 7, and the chain guide rails 7 have forced restraint on the chain traveling track. The basic power of the transmission and feeding system comes from the driving motor 3, is installed at a proper position of the frame, and drives one rubber roller in the rubber roller group to rotate through a proper transmission mode, such as the transmission of the synchronous belt group 10 (or other common transmission modes), so as to drive other rubber rollers to rotate through chain transmission, thereby providing power for the whole conveyor belt system. The driving motor 3 adopts an alternating current servo motor and adopts a digital control mode. The alternating current servo motor is also used for driving the water cutter head to move and cut, and a digital control mode is adopted. The movement of the two components is coordinated with respective servo drive through a computer control system to calculate and drive, and an accurate synthetic movement track can be obtained. As shown in fig. 3, since the belt must have a certain width, bilateral driving is required for it. Therefore, in the horizontal plane, the components of the rack and the chain transmission are arranged in double rows, so that the conveyor belt is stressed uniformly and can be flattened during running; in a proper position of the lower layer of the frame, a correlation sensor 12 is arranged, and when the conveyor belt connecting joint 5 reaches the position above the correlation sensor, the sensor can be triggered to send a start and stop signal of a conveyor belt driving motor.

The carrier for conveying the materials of the conveying system is a conveying belt, and the conveying belt is composed of a certain number of sections of conveying belt units. The conveyor unit shown in fig. 4 and 5 comprises a covered wire mesh 41, a non-elastic end 43 of the conveyor and an elastic end 42 of the conveyor.

The edge-covered steel wire mesh shown in fig. 6, the so-called edge-covered steel wire mesh, is an applicable steel wire mesh subjected to edge covering treatment to ensure that the edge of the steel wire mesh has good strength (without being dragged and scattered), flatness and friction reduction in work, the stainless steel wire mesh 411 is used as a basic material, and according to specific application conditions, the wire diameter of the stainless steel wire mesh is as small as dozens of wires (one wire =0.01 mm) and as large as several millimeters, and the sizes of eyelets are also in the range of dozens of wires to several millimeters, and the stainless steel wire mesh can be adopted. In order to ensure that the edge of the steel wire mesh has better strength, flatness and antifriction property in the working process, the upper and lower surfaces of the four sides of the steel wire mesh are wrapped and firmly bonded within a certain width (generally dozens of millimeters), the wrapping edges 412 are made of non-metal materials with small friction and wear resistance, such as polytetrafluoroethylene conveyor belts (also known as teflon conveyor belts or PTFE conveyor belts) or oxford cloth, crown sling materials or kevlar, serving as base materials, and coated with polytetrafluoroethylene. Other materials with similar properties are also possible. The adhesive can be any high-strength metal and non-metal bonding agent, such as hot melt adhesive, AB glue, and the like.

The edge-covered steel wire mesh is a basic carrier for conveying materials and supporting the materials to cut, the stainless steel wire mesh 411 can be tensioned to bear the impact of high-pressure water, holes of the stainless steel wire mesh can quickly drain water, and in addition, the water knife is provided with a water-absorbing fog system to increase the drainage speed.

As shown in fig. 7, the inelastic end of the conveyor belt is composed of an end connecting piece 431 and a mandrel 44 coated in the end, the end connecting piece 431 is made of the same material as the steel wire mesh edge covering material, the two layers are overlapped and firmly bonded, the left gap K is a bonding space with the edge-covered steel wire mesh, a hole is formed in the right end, the mandrel 44 is arranged in the hole, the mandrel 44 is generally made of a non-metal material such as plastic, and the mandrel is used for facilitating reliable installation and force transmission of the conveying material unit and the connecting joint.

As shown in fig. 8, the flexible end of the conveyor belt is composed of a transition piece 425, an industrial flexible cloth 424, a buckle 423 and a terminal connector. The industrial elastic fabric 424 is made of an industrial fabric having high strength and a certain elasticity, such as spandex fabric. The industrial elastic cloth 424 plays an important role in the conveyor belt unit, participates in power transmission in the belt surface direction of the conveyor belt, and more importantly, the industrial elastic cloth 424 provides certain flexibility for the conveyor belt unit, the performance is needed when the conveyor belt turns around, only the conveyor belt consisting of the steel wire mesh is turned around, flatness of other parts is difficult to control, and cutting precision is greatly reduced; in addition, when the conveying belt is accelerated and decelerated, stress buffering is carried out, impact is reduced, and the conveying belt is protected. The right side of the industrial elastic cloth 424 is provided with a transition connecting piece 425 which is made of the same material as the steel wire mesh edge covering material and is firmly bonded with the industrial elastic cloth through bonding, and a gap K on the right side of the transition connecting piece is bonded with the edge-covering steel wire mesh; the left side of the industrial elastic cloth 424 is bonded with an end connecting piece, when a conveying system is started, on the side where the dragging force of the conveying belt is transmitted, the connecting part of the industrial elastic cloth and the connecting piece has large impact force, and the connecting part is easy to damage, so that a plurality of ring fasteners are used for riveting and reinforcing the connecting part and the industrial elastic cloth.

As shown in fig. 9, the tip connector is composed of a base connector 422 and a mandrel 44. The basic connecting piece 422 is also made of the same material as the steel wire mesh edge covering material. Because the industrial elastic cloth is arranged at the right end of the end connecting piece, the description assumes that the power of the conveyor belt is transmitted from the left side, and the connection between the industrial elastic cloth and the end connecting piece is greatly impacted, which easily causes the damage of the connection part, so a plurality of buckles 423 are also adopted for riveting and reinforcing between the end connecting piece and the industrial elastic cloth. The left end of the tip connector forms a hole in which a mandrel 44 is mounted. The conveyor belt unit thus constructed allows the wire mesh to drain quickly and the cut material to be prevented from being soaked in water. The elastic bearing can be tensioned and tensioned to bear straight load, and the two properties can be adjusted to a certain degree. The water jet cutter is used for water jet cutter conveying, when the conveying belt is tightened by a driving force, the capability of the steel wire mesh for bearing the impact force in the vertical direction can be rapidly enhanced along with the increase of the displacement of the generated plumb bob, and the mechanical property of the conveying belt can meet the bearing requirement for the cutting of leather light materials.

A multi-section conveyor belt unit made of a covered steel wire mesh, a non-elastic end of a conveyor belt and an elastic end of the conveyor belt can form an annular closed conveyor belt structure through a connecting joint. According to the requirements of conveying working length and cutting zone size, the conveyor belt units with a certain number of sections are determined, and the conveyor belt units are spliced two by two to form a conveyor belt whole body through connecting joints.

Fig. 10 is a coupling joint structure. Comprises a joint body 5 and two transition connecting plates 51. Two transition connection plates 51 are welded at both ends of the joint body 5.

Fig. 11 shows the structure of the joint body 5, which is seen by cutting a-a in fig. 10. Consists of a U-shaped connecting plate 55, a middle plate 54, two half U-shaped upper cover plates 52 and a plurality of inner hexagonal countersunk head screws 53. The U-shaped connection plate 55 is a base member, and since the thickness of the connection joint is required to be as small as possible, and the thickness of the U-shaped connection plate 51 is also required to be relatively thin, the intermediate plate 54 is installed therein in a manner of welding or other connection means to integrate the two. The two half U-shaped upper cover plates 52 are placed on the other surface of the middle plate 54, the U-shaped connecting plate 55, the middle plate 54 and the two half U-shaped upper cover plates 52 are connected into a whole through two rows of inner hexagonal countersunk head screws 53, two S gaps and M gaps are formed by the U-shaped connecting plate 55, the middle plate 54 and the two half U-shaped upper cover plates 52 together, and the gaps are used for accommodating mandrels and double-layer connecting piece materials of the non-elastic ends and the elastic ends of the conveyor belts shown in the figures 4 and 6. The connector material extends from the gap M and in this way connects the conveyor units in a plurality of sections, eventually forming a closed loop. After the complete conveyor belt is formed, the conveyor belt is connected with other functional components and is installed on a frame of a water jet cutter to form a special conveying material system.

Fig. 12 is a schematic perspective view of a U-shaped connecting plate 55, which is a trihedral structure with a hollow groove in the middle and a plurality of threaded holes on the bottom.

Fig. 13 is a schematic perspective view of the middle plate 54, in which the holes are formed at the same positions as those of the U-shaped connecting plates 55, and two transition connecting plates 51 are welded to two ends of the middle plate 55 for connecting with a chain drive.

As shown in fig. 14, the connecting joint connects the belt units into one body. The belt end 42 of the preceding belt unit is connected to the left end of the connector, and the mandrel, overlapping adhesive bonding material, is received in the gap S at the left end of the connector. The non-elastic end 43 of the belt of the latter belt unit is connected to the right end of the connector, and the mandrel, overlapping adhesive connecting material, is mounted in the gap S in the right end of the connector. A socket countersunk head screw 53 shown in fig. 11 fastens and connects the components of the joint and the mandrel.

In this way, the multiple conveyor units are connected to form a closed loop structure. After the complete conveyor belt is formed, the conveyor belt is connected with other functional components and is installed on a frame of a water jet cutter to form a special conveying material system.

The chain guide as shown in fig. 16, which is a product that has been commonly used in the equipment manufacturing industry at present, is a metal guide holder 71 that forms an internal cavity to accommodate a non-metal guide 72 made of a material that is wear resistant and has a low coefficient of friction, and is mounted to a machine frame by a plurality of mounting screws 73. The chain 6 is transmitted into the cavity of the non-metal guide rail 72, and the polygonal effect and other transmission fluctuation influences of chain transmission can be basically eliminated during transmission, so that the chain transmission effect is stable, and the cutting precision is ensured.

As shown in fig. 20, the rubber roller 2 supporting the conveyor belt is composed of a steel core roller 21, a rubber layer 22, a driving sprocket 23, and a support stub 24. Support spindle nose 24 passes through the bearing and installs in the frame, provides the support and can rotate for rubber roller 2, is equipped with drive sprocket 23 at the both ends of every rubber roller 2, realizes power transmission with the chain cooperation, and rubber layer 22 possesses certain elasticity, makes conveyer belt and rubber roller flexible contact, does benefit to the adjustment conveyer belt elasticity degree to reduce the wearing and tearing of conveyer belt.

When the conveying system performs feeding and feeding motion, the water cutter head moves according to cutting requirements, the advancing instantaneous speed of the conveyor belt is stable, and the conveying motion can accurately synthesize required motion tracks. The water jet cutter for cutting the leather has larger machine size and larger length of the matched conveyor belt, the conveyor belt is driven to advance only by the friction of the rubber roller 2, and the transmission stability can not meet the requirement.

In this respect, the invention takes the following special measures:

as shown in fig. 16, 17 and 18, a connecting joint 5 must be arranged between two adjacent conveyor belt units, a transition connecting plate 51 is respectively arranged at two ends of each connecting joint 5 and is installed in the connecting plate through a connecting bolt, the connecting plate 13 is connected with the L-shaped plate 14 through a screw, two holes are formed in the other vertical edge of the L-shaped plate, pin shafts of the chain penetrate into the two holes, the other vertical edge of the L-shaped plate is fixed through an elastic locking sheet, the L-shaped plate is tightly installed on one chain link of the chain 6, and therefore the chain and the conveyor belt are firmly connected.

The connection brings a lot of benefits to the conveying system, and the transmission is reliable and powerful. Because the chain guide rail is adopted to forcibly restrict the motion of the chain, the chain transmission is stable, and the belt transmission is stable by connecting the conveyor belt with the chain transmission. The flat plates laid at the two ends of the frame are combined to restrain the conveying belt below the conveying belt and the rubber roller group plays a role in tensioning the conveying belt, so that the conveying belt is stable in conveying, feeding and bearing cutting force, and the required conveying material movement precision matched with cutting movement is guaranteed.

The material conveying system is created for matching with a numerical control water jet cutter for cutting soft materials such as leather and the like. The numerical control water jet scalpel is used for replacing human eyes and human hands, automatically cutting and trimming materials, improves the efficiency, and is also a green processing mode.

The water knife can be used for cutting soft materials, particularly leather and the like, at a high moving speed. Replace the workstation with the conveyer belt, carry on the work piece, carry on the in-process that the material gos forward at the conveyer belt, the water sword removes the cutting simultaneously, will improve work efficiency by a wide margin. For this purpose, the invention creates a completely new material conveying system completely different from the current workbench, so that the water knife can realize the efficient cutting of soft materials, particularly leather materials.

The structure and the composition of the material conveying system are specially designed and configured, and the technological process and the specific structure of the material conveying system are different from the supporting mode of a workbench or the material conveying system adopted by the existing water jet cutter. The achievement of the invention uses the numerical control water jet cutter as follows.

The work flow of applying the conveying system of the invention to the matched water jet cutter is as follows:

when the automatic conveying device works, the mesh belt driving mechanism drives the conveying mesh belt to circularly move around a dotted line shown in the figure. The invention combines the mesh belt driving mechanism, the conveying mesh belt and accessories thereof in the structure to be called a conveying and feeding system.

The feeding system firstly loads the cut material into the visual system area, the industrial camera is matched with the conveying net belt, the material is scanned during the material movement, the scanning information is spliced by special identification software, the edge of the cut material is identified according to a special method given in the software, the trimming track is calculated according to a specially developed algorithm, the numerical control system is arranged in the computer, the trimming track is automatically converted into a cutting instruction by the system, the instruction is sent into the numerical control execution system, and the computer commands the cutting machine to perform subsequent cutting according to the requirement.

After the material passes through the visual identification area, the material is loaded into the numerical control trimming area by a conveying system. The cutting machine in the area executes the longitudinal and transverse moving command sent by the computer numerical control system and moves along any curve in a two-dimensional plane. The high-pressure water nozzle is arranged on a cross beam of the transverse moving module of the cutting machine and can move along any curve.

The pressure of the high-pressure water can reach more than 300MPa (pressure unit: megapascal), and the high-pressure water is generated by an external special high-pressure pump. The diameter of the high-pressure water nozzle is very small, generally only a few tenths of millimeters or smaller, so that the high-pressure water is high in pressure, high in speed and very small in diameter, and fine cutting can be achieved. And when the material enters a finishing area, the cutting machine drives the high-pressure water nozzle to move according to the instruction of the computer, and the high-pressure water nozzle continuously sprays high-pressure water in the moving process to cut the material.

The lower part of the mesh belt at the cutting machine part, namely the inside of the cutting machine, is also provided with a dehydrator which can accelerate the water generated by cutting to actively flow downwards and be discharged through related components.

The driving power of the material conveying and feeding system is also provided by a speed reducing servo motor, the driving unit is also controlled by a computer servo unit, a mesh belt driving roller (rubber roller) is driven to rotate after speed reduction, two ends of the mesh belt driving roller are respectively provided with a large chain wheel, a chain is arranged on the large chain wheel, and a guide rail is arranged outside the chain and used for ensuring stable transmission of the chain. The chain is mechanically connected with the conveying mesh belt, so that the conveying mesh belt can be driven to advance when the chain moves. The two ends of the mesh belt driving roller are respectively provided with one set of large chain wheel and chain for ensuring that the two sides of the mesh belt can be driven, so that the mesh belt can move uniformly. The linear motion of the conveying net belt and two groups of linear basic motion units of the cutting machine form a three-axis linkage motion system which is controlled by a computer three-axis linkage numerical control system, so that three actions of longitudinal forward motion, transverse movement and longitudinal additional motion during trimming and cutting can be realized together, and the cutting motion speed can be accelerated.

At the end of the trimming, the conveyor belt conveys the material out of the cutting area to the end of the machine. At this end the belt makes a 180 degree turn into the lower part of the machine.

The machine is provided with special control software, and all the actions and calculations required to be controlled mainly comprise the switches of all the components, the action sequence and the like, and are realized by the software in a centralized way. In addition, the feeding speed of the conveying net belt, the action time and precision of visual scanning, the accuracy grade of the cutting track and the speed of the numerical control cutting motion shaft can be adjusted. The hardware configuration of the machine is selected from proper structure types, and the control functions are correspondingly arranged in the software.

The invention has unique and special composition and structure, and the technological process and the specific structure are obviously different from the water jet cutter used in the prior common cutting and different from the common automatic computer cutting machine.

The machine is particularly suitable for finishing natural materials such as animal leather, and has good processing quality and high efficiency. The conveying belt comprises a plurality of sections of conveying belt units and connecting joints, wherein each conveying belt unit consists of a covered steel wire mesh, a conveying belt non-elastic end and a conveying belt elastic end; the connector comprises a U-shaped section connecting plate, a middle plate, two half U-shaped upper cover plates and two transition connecting plates. The conveying belt and the transmission chain are integrated into a whole through the two transition connecting plates, and the conveying belt and related configured components are integrated into a conveying system. The running stability of the conveyor belt is improved by combining multiple measures such as adopting a rubber roller set, additionally arranging a flat plate to limit the conveyor belt, applying a chain guide rail to restrain a chain and the like; the stroke of the cutting unit is controlled by utilizing the induction of a connecting plate of the connecting joint and the correlation sensor.

The matched conveying and feeding system for the water jet cutter bears the cut material and provides a solid lower support when the cut material is subjected to cutting stress; and guarantee by the cutting material not by the water logging when the cutting, where water cutter head cuts, where can real-time drainage. The conveying material moves forward, the cut material enters a processing area, the cutting is carried out on the upper side of the transmission system while advancing, a workbench is not required to be additionally arranged, the conveying material system performs continuous circular motion, and the conveying material system can return to the initial position after a certain period. The conveying and feeding system is matched with a water knife to operate and cut, is stable and reliable, and meets the general requirements of the leather industry on cutting precision. When cutting and trimming, the position of the processed material in the horizontal and height directions needs to be stable and accurate, and the cutting precision of leather generally needs to be in the order of millimeters. The processed workpiece is carried on a moving and elastic conveying and feeding system, and is different from a common rigid workbench for cutting, and a special configuration structure is required for the conveying and feeding system to ensure the accuracy of the horizontal direction and the height direction during cutting. Other structural configurations of the conveying system are matched with the water jet cutter, so that the synthetic integrated precision of the movement of the conveying system and the cutting movement of the water jet cutter is guaranteed, the movement control signal of the conveying system can be automatically acquired, and the whole working process of the conveying system is automated and efficient.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. A material conveying system configured for a leather cutting water jet cutter comprises a machine frame on which the water jet cutter works and is characterized in that,

2. A conveyor system configured for a leather cutting water jet as defined in claim 1, wherein: the conveyor belt unit is specifically wrapped with a steel wire mesh, a non-elastic end of the conveyor belt and an elastic end of the conveyor belt.

3. A conveyor system configured for a leather cutting water jet as defined in claim 2, wherein: the edge-covered steel wire mesh is a stainless steel wire mesh, and the upper surface and the lower surface of the stainless steel wire mesh are covered with edges; the inelastic end of the conveyor belt comprises an end connecting piece, a mandrel and a gap K, and the elastic end of the conveyor belt comprises a transition connecting piece, industrial elastic cloth, a ring buckle, an end connecting piece and a gap K.

4. A conveyor system configured for a leather cutting water jet as defined in claim 1, wherein: the connector structure comprises a connector body and transition connecting plates at two ends of the connector body, wherein the connector body comprises a U-shaped connecting plate, a middle plate, two half U-shaped upper cover plates and a plurality of inner hexagonal countersunk head screws.

5. A conveyor system configured for a leather cutting water jet cutter as defined in claim 4 wherein: install the intermediate lamella in the U type connecting plate, two half U type upper cover boards are placed on the another side of intermediate lamella, connect U type connecting plate, intermediate lamella, two half U type upper cover boards as a whole through two rows of hexagon socket head cap screws, U type connecting plate, intermediate lamella, two half U type upper cover board three construct two spaces and clearance jointly, the space is used for holding the dabber of conveyer belt inelasticity end and conveyer belt elasticity end, the connecting piece material stretches out from the clearance.

6. A conveyor system configured for a leather cutting water jet as defined in claim 1, wherein: the driving motor drives each rubber roller through a synchronous belt and a synchronous pulley group, each rubber roller is composed of a steel core roller, a rubber layer, a driving chain wheel and a supporting shaft head, the supporting shaft head is installed on the rack through a bearing, the driving chain wheels are installed at two ends of each rubber roller, and a chain is meshed with the driving chain wheels at two ends of each rubber roller.

7. A conveyor system configured for a leather cutting water jet according to claim 1 or 6, characterized in that: chain guide rails are arranged on the upper surface and the lower surface of the rack, an inner cavity is formed in the guide rail seat to accommodate the guide rail, the chain guide rail is arranged on the rack through mounting screws, and the chain is transmitted into the cavity of the guide rail.

8. A conveyor system configured for a leather cutting water jet as defined in claim 1, wherein: a connecting joint must be arranged between two adjacent conveyor belt units, two transition connecting plates are respectively arranged at two ends of each connecting joint and are arranged in the connecting plates through connecting bolts, the connecting plates are connected with the L-shaped plates through screws, two holes are formed in the other vertical edge of each L-shaped plate, pin shafts of the chains penetrate into the two holes, the other vertical edge of each L-shaped plate is fixed through elastic locking pieces, and the L-shaped plates are tightly arranged on one chain link of the chains.

9. A conveyor system configured for a leather cutting water jet as defined in claim 1, wherein: the cleaning roller for cleaning the surface of the conveyor belt is arranged, and the roller surface of the cleaning roller is provided with a brush which is contacted with the conveyor belt.

10. A conveyor system configured for a leather cutting water jet as defined in claim 1, wherein: and the proper position of the lower layer of the rack is provided with the correlation sensor, and when the connecting joint of the conveyor belt reaches the position above the correlation sensor, the sensor can be triggered to send a start-stop signal of the drive motor of the conveyor belt.