Dishwasher liner biting process and biting machine

Abstract

The present invention relates to a dishwasher liner biting process and a biting machine. The biting machine has four groups of forming biting hob mechanisms and four track dies symmetrically arranged up and down, left and right. Biting is performed on the four sides of the liner workpiece at the same time. The center line of the track die is parallel to the contour line of the liner workpiece. The forming biting hob moves relative to the track die to ensure that each group of forming biting hobs rolls over the outer edge of the liner workpiece equidistantly to complete the biting. There are two forms of movement between the track die, the forming biting hob and the liner workpiece: 1) the liner workpiece and the track die are fixed, and the forming biting hob moves relative to the liner workpiece along the track die; 2) the forming biting hob is fixed, and the liner workpiece and the track die move; according to the structure of the liner workpiece, the biting edges of the two forms of movement can be straight lines or curves. The biting machine of the process structure of the present invention can bit four sides up and down, left and right at the same time, and the installation height is simple and convenient, with high reliability, which greatly shortens the changeover adjustment time.

Description

Technical Field

[0001] The invention discloses a processing device for biting and forming the inner tank of a dishwasher, and in particular relates to an inner tank biting process and a biting machine. Background Art

[0002] With the rapid development of my country's economy and the continuous improvement of people's living standards, dishwashers, as common household appliances, are becoming more and more popular among young people, and customer experience and satisfaction are getting better and better. In the near future, dishwashers will be as popular as washing machines and refrigerators, and their sales market will be huge.

[0003] The key to the production of dishwashers is the processing of the inner tank, which is to stamp stainless steel and stainless iron sheets into shape, and then splice three or four stamped sheets into a sealed cubic inner tank with one end open. At present, there are two main ways to form the inner tank of a dishwasher: welding and biting. The welding method is a primitive process with poor product consistency, poor appearance and potential risks such as leakage. This technology has been gradually eliminated, and the mainstream technology is still to splice the formed sheets together by biting and flanging.

[0004] At present, the edge biting forming equipment for dishwasher liner is mainly from the Italian company Meroni. One is a turntable edge biting machine. The structural characteristics of this edge biting machine are that a tire mold frame with an inner liner mold is arranged in the middle of the equipment, and the sheet material is adsorbed on the inner liner mold through a suction cup; a large turntable is arranged on both sides, and four forming bite rollers are installed on the large turntable. A forming bite roller track mold with an annular groove is fixed in the middle of the turntable. Through the rotation of the large turntable, the forming bite roller is driven to roll along the inner liner bite edge under the constraint of the track mold, thereby completing the edge biting splicing. This type of edge biting machine can only bite two edges. There are four forming bite rollers on each large turntable, and the bite is completed through four forming. Due to the small number of forming bite rollers, the bending deformation of the sheet metal is large each time forming. In addition, the characteristics of the sheet metal parts make the bite qualification rate low when the incoming material characteristics are deviated. Therefore, this type of edge biting machine has poor compatibility with the material characteristics and appearance size deformation of the workpiece. Therefore, it is necessary to innovate and improve the biting process on this basis, divide the biting process into six parts, greatly improve the compatibility with the workpiece material characteristics and dimensional deformation, and shorten the biting time.

[0005] The forming bite hobs of the turntable bite edge machine are installed on the turntable. When the turntable rotates, each forming bite hob circles the inner liner in turn. A large number of tests have shown that increasing the number of forming bite hobs can reduce the deformation of the sheet metal each time during the bite process, which is beneficial to the bite forming of the sheet metal. However, due to the limitation of the circumference of the workpiece and the size of the turntable, the number of forming bite hobs installed on this type of bite edge machine can only be 4 to 8.

[0006] In addition, for this type of biting machine, when changing the product, the track mold, the lining film or even the middle lining mold frame needs to be replaced directly. This type of changeover method takes a long time to adjust and has poor stability.

[0007] Another type is the chain bite machine. The main structural feature of this machine is a tire mold frame with a fixed inner lining mold in the middle. The sheet to be bitten is placed on the inner lining mold and pressed by a clamping device. There is a group of forming bite rollers driven by chains on both sides of the tire mold frame. The motor drives the chain to pull the forming bite rollers to move one circle along the biting edge to complete the biting. This type of biting machine has a compact structure, but like the turntable biting machine, it can only bite two edges and has the defect of complex mold change.

[0008] The dishwasher market has broad prospects, and home appliances are diverse and frequently updated. The dishwasher tank is an important part of the dishwasher. At present, most dishwasher tanks with interlocking form are formed by bending the middle plate into a U shape and then interlocking with the upper and lower bottom plates to form an open inner cavity. Because the middle plate is bent, there are rounded corners at the back, which reduces the use space of the tank. For the same size tank, in order to increase the use rate of the tank space, the tank can be changed to four plates interlocking the four sides to form, so that there are no rounded corners at the back. Summary of the invention

[0009] The present invention is aimed at some new types of inner tanks (without middle plate bending, an open inner cavity is formed directly by biting 4 plates, and there is no rounded corner on the rear of the inner tank after biting), and at the same time solves the problem of rapid model change of a biting machine to be compatible with the production of multiple models of inner tanks, and provides a new dishwasher inner tank biting process and biting machine. The biting machine of this process structure can bite the four edges of the upper, lower, left and right at the same time, and can also be compatible with the production of multiple models of inner tanks without replacing parts. It is highly simple and convenient to install, with high reliability, which greatly shortens the model change adjustment time.

[0010] To achieve the above-mentioned purpose, the technical solution of the present invention is: a dishwasher liner biting process, using a dishwasher liner biting machine, characterized in that: the biting machine has four groups of forming biting hob mechanisms and four track dies symmetrically arranged up and down and left and right, and the four sides of the liner workpiece are bitten simultaneously on both sides, the center line of the track die is parallel to the contour line of the liner workpiece, and the forming biting hob moves relative to the track die to ensure that each group of forming biting hobs rolls over the outer edge of the liner workpiece equidistantly to complete the biting, wherein there are two forms of movement between the track die, the forming biting hob and the liner workpiece: 1) the liner workpiece and the track die are fixed, and the forming biting hob moves relative to the liner workpiece along the track die; 2) the forming biting hob is fixed, and the liner workpiece and the track die move; according to the structure of the liner workpiece, the biting edges of the two forms of movement can be straight lines or curves.

[0011] A dishwasher liner biting machine for the second motion form in the above-mentioned biting process, the liner biting machine is composed of a base, a mobile base, a tire mold frame, a rolling cutter mechanism, a tire mold assembly, a track mold, a backing mold assembly, a suction cup assembly, a clamping assembly, a servo drive system, and a control system. It is characterized in that: the rolling cutter mechanism, the servo drive system and the control system are installed on the base, and the tire mold assembly, the track mold, the backing mold assembly, the suction cup assembly, and the tire mold frame are installed on the mobile base; the four groups of the rolling cutter mechanisms are divided into two pairs and symmetrically arranged on both sides of the base, and each pair of the rolling cutter mechanisms are symmetrically distributed on the upper and lower surfaces of the base; the track mold has four pieces , and symmetrically installed on the mobile base, the mobile base is placed in the base, and sliding shoes are installed on the bottom of both sides to cooperate with the guide rails on the base, and lead screw nuts are installed on both sides of the mobile base to cooperate with the ball screw of the servo drive system; the tire mold frame is equipped with a tire mold assembly, and the inner liner sheet is placed in the tire mold assembly. The servo drive system drives the lead screw nut to drive the mobile base to slide along the guide rail on the base, so that the tire mold frame moves to drive the inner liner to move relative to the forming bite hob of the hob mechanism, and at the same time, the forming bite hob moves along the curved edge of the inner liner under the constraint of the track mold, thereby completing the bite and bite of the upper, lower, left and right four sides of the inner liner of the bite machine at the same time.

[0012] Furthermore, the mold assembly is composed of a top external mold assembly and a bottom external mold assembly, and the top external mold assembly and the bottom external mold assembly have a cylinder support, a cylinder, a mold base plate, a contoured pressure block, and an external mold. The external mold is fixedly connected to the mold base plate, and the mold base plate is connected to the cylinder support through a cylinder, and the cylinder support is fixed to the movable base; after the top plate and the bottom plate of the inner liner are placed, the cylinder extends out to drive the external mold to move, and finally the top plate and the bottom plate are pressed tightly under the action of the top and bottom external molds.

[0013] Furthermore, a mold changing device is also installed in the top outer mold assembly, and the mold changing device is composed of a guide sleeve, a guide rod, a connecting plate, a contour pressure block, and a spring pin. The guide rod is installed on the mold base plate through the guide sleeve, and the upper end of the guide rod is connected to the connecting plate and the contour pressure block. The guide rod is provided with position holes corresponding to each inner liner model. When switching the model, it is only necessary to lift the connecting plate to move the position hole of the corresponding model of the guide rod to the position of the spring pin, and then tighten the spring pin.

[0014] Furthermore, the tire mold frame is equipped with a top tire mold assembly, a bottom tire mold assembly, a suction cup assembly and a clamping mechanism, and the top tire mold assembly and the bottom tire mold assembly have a tire mold cylinder seat, a tire mold base plate, a tire mold, an inclined push rod, a tire mold, a tire mold pressure block and a spring; the tire mold base plate is fixed to the tire mold frame, the tire mold is installed on the tire mold base plate and connected to the inclined push rod, the inclined push rod is connected to the tire mold cylinder, the tire mold pressure block is installed on the tire mold base plate, covers the inclined push rod and the tire mold spring and is installed between the tire mold and the tire base plate, when the cylinder extends, the inclined push rod is pushed, thereby pushing the tire mold outward to the working position, when the tire mold cylinder is retracted, the tire mold is retracted inward and restored to its original position under the action of the spring.

[0015] Furthermore, the suction cup assembly has four groups, namely left, right, top and bottom suction cup assemblies. The left, right and bottom suction cup assemblies are fixedly connected to the tire mold frame through suction cup rods, or the suction cup rods are telescopically installed through cylinders or servo motors to facilitate the removal of the engaged inner liner.

[0016] Furthermore, the suction cup assembly is composed of a suction cup, a suction cup rod, gears, a servo motor, a suction cup frame, a ball screw and a screw nut; the servo motor drives the ball screw and the nut through the gears, and the nut is connected to the suction cup frame to drive the suction cup frame to move up and down, and the suction cup is fixedly mounted on the suction cup frame, thereby realizing the adjustment of the upper and lower positions of the suction cup frame and the suction cup; it is used to adjust the height of the top suction cup, which is suitable for the height of the top plate of the inner liner of different models; the clamping mechanism is composed of a cylinder and a pressure head, and the clamping mechanism is respectively installed at the end and both sides of the tire mold frame. When placing the inner liner sheet, the tire mold cylinder is extended first to push the top and bottom tire molds outward to the working position, and the inner liner sheet is placed against the tire mold, and then the suction cup assembly adsorbs and the clamping mechanism presses the sheet; while the plates of the inner liner are adsorbed by the suction cup, the clamping mechanism at the end and both sides acts to ensure that the positions of the plates do not change when the inner liner is bitten.

[0017] Furthermore, the hob mechanism is composed of a slide rail, a formed interlocking hob shaft, a formed interlocking hob seat, a formed interlocking hob, a supporting wheel, and a skateboard bracket. The skateboard bracket is connected to the base sliding shoe on the base through the slide rail, and the bottom of the skateboard bracket is connected to the track mold through the supporting wheel; the skateboard bracket is connected to the formed interlocking hob shaft and the formed interlocking hob through the formed interlocking hob seat; when the mobile base moves relative to the base, the track mold moves relative to the supporting wheel, and at the same time drives the formed interlocking hob on the skateboard bracket and the tire mold on the mobile base to move relative to each other.

[0018] Furthermore, the last group of the roller mechanism is equipped with a booster cylinder and a roller guide rail. The booster cylinder is installed on the skateboard bracket through the booster cylinder mounting seat. The booster cylinder is connected to the push block, and the push block is cooperated with the roller guide rail fixed on the skateboard bracket. The position of the forming bite roller is adjusted by the booster cylinder, so that the distance between the forming bite roller and the tire mold can be adjusted, and the pressure during bite can be increased.

[0019] Furthermore, the dishwasher inner tank biting machine is also equipped with an atomizing spray system, which consists of a box body, a pressure pump assembly, a pipeline, and an atomizing nozzle. The pressure pump assembly is installed on the box body and is connected to the atomizing nozzle through a pipeline. When the inner tank moves relative to the forming biting roller, the forming biting roller is driven to rotate clockwise. At this time, the atomizing nozzle sprays the oil-water mixture onto the forming biting roller. The forming biting roller with the oil-water mixture bites the inner tank again, which can prevent glue from sticking to the forming biting roller; the atomizing nozzle is installed on the tire mold frame, and the box body and the pressure pump assembly are installed on a mobile base or fixedly installed on a base.

[0020] The beneficial effects of the present invention are:

[0021] The linear biting machine of the invention is composed of a base, a movable base, a tire mold frame, a hobbing mechanism, a tire mold assembly, a track mold, a backing mold assembly, a suction cup assembly, a servo drive system and a control system.

[0022] The base has symmetrically distributed roller cutter mechanisms, and the movable base moves relative to the base. At the same time, the liner sheet placed on the movable base moves relative to the forming bite roller cutter, so that the four edges can be bitten at the same time. This type of biting machine has a simple and reliable structure and is easy to adjust and maintain.

[0023] The linear bite machine can also reduce the diameter of the forming bite hob and increase the number of forming bite hobs in each group, thereby improving the forming variables of each forming bite hob and improving the bite quality. By adjusting the front and end changeover devices located at the top external mold assembly, the production of different types of liner bites can be switched, achieving one machine with multiple uses and compatibility with different product specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the bite process of the new model of liner;

[0025] Figure 2 It is a general schematic diagram of the undercutting machine for the inner tank of a dishwasher of the present invention;

[0026] Figure 3 It is a schematic diagram of the servo drive system and control system;

[0027] Figure 4 is a schematic diagram of a mobile base;

[0028] Figure 5 It is the top outer mold assembly;

[0029] Figure 6 It is a three-dimensional schematic diagram of the tire mold frame installation structure;

[0030] Figure 7 This is the front view of the tire mold frame installation structure;

[0031] Figure 8 It is a schematic diagram of the hob mechanism. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] For the new type of liner, the present invention proposes a new biting process, see Figure 1 . The four sides of the liner are engaged independently, and the two sides are engaged simultaneously. Four groups of forming interlocking hob mechanisms 3 and four track molds 6 are arranged symmetrically up and down and left and right. The center line of the track mold 6 is kept parallel to the contour line of the liner 11, and the forming interlocking hob moves along the track mold to ensure that each group of forming interlocking hobs rolls over the outer edge of the liner equidistantly to complete the engagement. This new interlocking process principle has two forms of movement: 1. The liner workpiece and the track mold are fixed, and the forming interlocking hob moves relative to the liner workpiece along the track mold; 2. The forming interlocking hob is fixed, and the liner workpiece and the track mold move. The interlocking edges of the two forms of movement can be straight lines or curves, depending on the design of the liner product.

[0034] Therefore, the second form of movement requires the development of a completely new linear biting machine.

[0035] like Figures 2 to 8 As shown, a linear biting machine for the second form of motion is composed of a base 1, a movable base 4, a tire mold frame, a hob mechanism 3, a tire mold assembly 9, a track mold 6, a backing mold assembly 5, a suction cup assembly 10, a servo drive system 2, a control system, and a spraying system.

[0036] The hob mechanism 3, servo drive system 2 and control system are installed on the base 1, and the tire mold assembly 9, track mold 6, backing mold assembly 5, suction cup assembly 10 and tire mold frame are all installed on the mobile base 4. Slide shoes are installed on the bottom of both sides of the mobile base 4 to cooperate with the guide rails on the base 1, and screw nuts are also installed on both sides of the mobile base 4 to cooperate with the ball screw of the servo drive system 2. Under the action of the servo drive system 2, the mobile base 4 is driven to slide along the guide rails on the base 1 through the screw nuts.

[0037] like Figure 3 As shown, the servo drive system 2 includes: a servo motor 201, a coupling 202, a bearing 203 seat, and a ball screw 204, which are symmetrically mounted on the base 1. In addition, the base 1 is symmetrically mounted with hob shoes for mounting the hob mechanism, and a control panel is mounted at the end.

[0038] like Figure 4As shown, the movable base 4 is provided with a screw nut 301, a base shoe 302, a track mold 6, a top outer mold assembly 304, and a bottom outer mold assembly 305 on both sides. The screw nut 301 cooperates with the ball screw 204 installed on the base 1, and the movement of the screw nut 301 relative to the ball screw 204 provides power for the movement of the movable base 4. The base shoe 302 cooperates with the guide rail on the base 1 to provide guidance when the movable base 4 moves. The hob mechanism 3 is installed on the base 1, and the slide rail of the hob mechanism 3 cooperates with the base shoe 302 of the base 1, and the roller in the hob mechanism 3 can roll in the groove of the track mold 6. By changing the track path, it is ensured that when the movable base 4 moves, the distance between the forming bite hob in the hob mechanism 3 and the outer surface of the tire mold remains unchanged. After the top outer mold assembly 304 and the bottom outer mold assembly 305 are placed on the top plate and the bottom plate of the inner tank, the cylinder extends to drive the outer mold to move, and finally the top plate and the bottom plate are pressed tightly under the action of the top and bottom outer molds.

[0039] like Figure 5 As shown, the top outer mold assembly 304 includes a cylinder support 401, a cylinder 402, a mold base plate 403, a profiling block 404, a connecting plate 405, a guide column 406, a spring pin 407, a guide sleeve 408, and a top outer mold 409. The top outer mold 409 is fixedly connected with the mold base plate 403, and the mold base plate 403 is connected to the cylinder support 401 through the cylinder 402. The top outer mold 409 is equipped with a connecting plate 405 and a profiling block 404. Since the top plate has a large deformation amount during the press forming, the four corners will be tilted when placed on the top tire mold. At this time, a mold changing device is installed in the top outer mold assembly 304. The mold changing device is divided into a front end and a rear end, and is composed of a guide sleeve 408, a guide rod 406, a connecting plate 405, a profiling block 404, and a spring pin 407. The guide rod 406 is provided with position holes corresponding to the types of inner liner. When switching types, it is only necessary to lift the connecting plate 405 to move the position hole of the corresponding type of the guide rod 406 to the position of the spring pin 407, and then tighten the spring pin 407. At this time, while the top outer mold descends and presses the top plate, the type-changing device also descends, and the profiling blocks press the four corners of the top plate.

[0040] The bottom outer mold assembly 305 is similar in structure to the top outer mold assembly 304 , except that the bottom outer mold assembly 305 does not have a mold changing device.

[0041] like Figure 6As shown in FIG. 7 , the mold frame is equipped with a top mold assembly, a bottom mold assembly, a suction cup assembly 10 and a clamping mechanism 506. The top mold assembly and the bottom mold assembly are both composed of a mold cylinder 501, a cylinder seat 502, an inclined push rod 503, a mold pressure plate 504, a mold 505, a spring 515, a mold base plate 516, a suction cup rod 1 507, a limit block 508, etc. The suction cup assembly 10 is composed of a suction cup 509, a suction cup rod 2 510, a gear 511, a servo motor 512, a suction cup frame 513, a ball screw 514 and a screw nut. The clamping mechanism 506 is composed of a cylinder and a pressure head. When placing the liner sheet, the mold cylinder 501 is extended first, and the top and bottom molds are pushed outward to the working position, and the liner sheet is placed against the mold, and then the suction cup assembly 10 adsorbs and the clamping mechanism 506 presses the sheet.

[0042] There are four groups of suction cup assemblies 10, wherein the top suction cup assembly includes a suction cup, a suction cup rod, a gear, a servo motor, a suction cup frame, a ball screw, a screw nut, etc. According to different models, the output of the servo motor is controlled to drive the suction cup frame to rise and fall through the transmission of the gear ball screw, thereby realizing the switching of the working position of the top suction cup. The suction cup assemblies on both sides are composed of suction cups and suction cup rods. The suction cup rods can be fixedly installed on the tire mold frame, or can be made into a telescopic type and installed on the tire mold frame.

[0043] like Figure 8 As shown, the hob mechanism 3 is composed of a slide rail 601, a booster cylinder 602, a booster cylinder mounting seat 603, a push block 604, a needle guide rail 605, a forming bite hob shaft 606, a forming bite hob seat 607, a forming bite hob 608, a support wheel 609, a slide bracket 610, a limit rod 611, etc. The remaining hob mechanisms can only be composed of a slide rail, a forming bite hob shaft, a forming bite hob seat, a forming bite hob, a support wheel, a slide bracket, and a limit rod. The slide rail 601 of the hob mechanism is installed in conjunction with the base shoe 302 on the base 1, and the support wheel 609 is installed in conjunction with the track mold 6. When the mobile base 4 moves, the track mold 6 passes through the support wheel 609 of each group of forming bite hob mechanisms in turn. Thereby, all the forming bite rollers 608 are driven to move along the base sliding shoe 302 relative to the tire mold in turn, and each group of forming bite rollers 608 rolls over the inner liner bite surface in turn to complete the bite edge.

[0044] The spraying system consists of a box, a pressure pump assembly, a pipeline, an atomizing nozzle, etc. The pressure pump assembly is installed on the box and connected to the atomizing nozzle through a pipeline. When the inner tank workpiece moves relative to the forming bite hob, the forming bite hob is driven to rotate clockwise. At this time, the atomizing nozzle sprays the oil-water mixture on the forming bite hob. The forming bite hob with the oil-water mixture bites the inner tank workpiece again, so that the glue will not stick to the forming bite hob. In this system, the atomizing nozzle can be installed on the tire mold frame, and the box and the pressure pump assembly can be installed on the mobile base 4 or fixedly installed with the base 1.

[0045] In order to ensure that the engagement position does not leak during the engagement of the liner, glue will be applied to the liner sheet. During engagement, the folded edge of the sheet is squeezed by external force, which will squeeze out the glue and stick to the forming engagement hob. The atomizing spray system can spray the oil-water mixture on the forming engagement hob in an atomized form while the wheels are engaged. In this way, the glue will fall directly off the forming engagement hob when it is extruded without sticking to the forming engagement hob. The atomizing nozzle of this system is installed on the tire mold frame and moves with the liner workpiece. When the workpiece moves relative to the forming engagement hob, it drives the forming engagement hob to rotate. Each forming engagement hob passes through the nozzle position in turn when it rotates. During the engagement process, the nozzle is kept working to ensure that each forming engagement hob has an oil-water mixture.

[0046] The base is the main support of the equipment, with good rigidity, and the processing surface must meet the position accuracy requirements. The base has integral and split types. The split type is the upper installation part connected to the bottom by bolts and pins. The integral type is selected here. The hob mechanism, drive system, control system and guide rails are installed on the base. When changing the model, you only need to adjust the position of the front and rear contour blocks of the top cover.

Claims

1. A dishwasher liner biting process, using a dishwasher liner biting machine, characterized in that: The biting machine has four groups of forming bite hob mechanisms and four track dies symmetrically arranged up and down and left and right. The four sides of the liner workpiece are bitten simultaneously on both sides. The center line of the track die is parallel to the contour line of the liner workpiece. The forming bite hob moves relative to the track die to ensure that each group of forming bite hobs rolls over the outer edge of the liner workpiece equidistantly to complete the biting. Among them, there are two forms of movement between the track die, the forming bite and the liner workpiece: 1) the liner workpiece and the track die are fixed, and the forming bite hob moves relative to the liner workpiece along the track die; 2) the forming bite hob is fixed, and the liner workpiece and the track die move; according to the structure of the liner workpiece, the biting edges of the two forms of movement are both straight lines or curves; wherein, the dishwasher liner biting machine for realizing the second form of movement in the biting process is composed of a base, a movable base, a tire mold frame, a hob mechanism, a tire mold assembly, a track mold, a mold assembly, a suction cup assembly, a clamping assembly, a servo drive system, and a control system. The mechanism, servo drive system and control system are installed on the base, and the tire mold assembly, track mold, backing mold assembly, suction cup assembly and tire mold frame are installed on the mobile base; the four groups of the hob mechanism are divided into two pairs and symmetrically arranged on both sides of the base, and each pair of the hob mechanism is symmetrically distributed on the upper and lower surfaces of the base; the track mold has four pieces and is symmetrically installed on the mobile base, the mobile base is placed in the base, and the bottom of both sides is installed with sliding shoes to cooperate with the guide rails on the base, and the two sides of the mobile base are installed with screw nuts to cooperate with the ball screw of the servo drive system; the tire mold frame is equipped with a tire mold assembly, and the inner liner sheet is placed in the tire mold assembly. The servo drive system drives the screw nut to drive the mobile base to slide along the guide rail on the base, so that the tire mold frame moves to drive the inner liner to move relative to the forming bite hob of the hob mechanism, and at the same time, the forming bite hob moves along the curved edge of the inner liner under the constraint of the track mold, thereby completing the bite and bite of the upper, lower, left and right four sides of the inner liner of the bite machine at the same time.

2. The dishwasher inner tank biting process according to claim 1, characterized in that: The mold assembly consists of a top outer mold assembly and a bottom outer mold assembly, and the top outer mold assembly and the bottom outer mold assembly have a cylinder support, a cylinder, a mold base plate, a contoured pressing block, and an outer mold. The outer mold is fixedly connected to the mold base plate, and the mold base plate is connected to the cylinder support through a cylinder, and the cylinder support is fixed to the movable base; after the top plate and the bottom plate of the inner liner are placed, the cylinder extends out to drive the outer mold to move, and finally the top plate and the bottom plate are pressed tightly under the action of the top and bottom outer molds.

3. The dishwasher liner biting process according to claim 2, characterized in that: The top outer mold assembly is also equipped with a mold changing device, which consists of a guide sleeve, a guide rod, a connecting plate, a contour pressing block, and a spring pin. The guide rod is installed on the mold base plate through the guide sleeve, and the upper end of the guide rod is connected to the connecting plate and the contour pressing block. The guide rod is provided with position holes corresponding to each liner model. When switching models, you only need to lift the connecting plate to move the position hole of the corresponding model of the guide rod to the position of the spring pin, and then tighten the spring pin.

4. The dishwasher liner biting process according to claim 1, characterized in that: The tire mold frame is equipped with a top tire mold assembly, a bottom tire mold assembly, a suction cup assembly and a clamping mechanism. The top tire mold assembly and the bottom tire mold assembly have a tire mold cylinder seat, a tire mold base plate, a tire mold, an inclined push rod, a tire mold pressure block and a spring; the tire mold base plate is fixed to the tire mold frame, the tire mold is installed on the tire mold base plate and connected with the inclined push rod, the inclined push rod is connected to the tire mold cylinder, the tire mold pressure block is installed on the tire mold base plate, the inclined push rod and the tire mold spring are installed between the tire mold and the tire base plate. When the cylinder extends, the inclined push rod is pushed, thereby pushing the tire mold outward to the working position. When the tire mold cylinder is retracted, the tire mold is retracted inward and restored to its original position under the action of the spring.

5. The dishwasher inner tank biting process according to claim 4, characterized in that: The suction cup assembly has four groups, namely left side, right side, top and bottom suction cup assemblies. The left, right side and bottom suction cup assemblies are fixedly connected to the tire mold frame through suction cup rods. The cylinder or servo motor serves as the telescopic structure of the suction cup rod, which is convenient for taking out the inner liner that has been bitten.

6. The dishwasher liner biting process according to claim 4, characterized in that: The suction cup assembly consists of a suction cup, a suction cup rod, a gear, a servo motor, a suction cup frame, a ball screw and a screw nut; the servo motor drives the ball screw and the nut through the gear, and the nut is connected to the suction cup frame to drive the suction cup frame to move up and down, and the suction cup is fixedly mounted on the suction cup frame, thereby realizing the adjustment of the upper and lower positions of the suction cup frame and the suction cup; it is used to adjust the height of the top suction cup, which is suitable for the height of the top plate of the inner liner of different models; the clamping mechanism consists of a cylinder and a pressure head, and the clamping mechanism is respectively installed at the end and both sides of the tire mold frame. When placing the inner liner sheet, the tire mold cylinder is extended first to push the top and bottom tire molds outward to the working position, and the inner liner sheet is placed against the tire mold, and then the suction cup assembly adsorbs and the clamping mechanism presses the sheet; while the plates of the inner liner are adsorbed by the suction cup, the clamping mechanism at the end and both sides acts to ensure that the positions of the plates do not change when the inner liner is bitten.

7. The dishwasher liner biting process according to claim 1, characterized in that: The hob mechanism consists of a slide rail, a formed interlocking hob shaft, a formed interlocking hob seat, a formed interlocking hob, a supporting wheel, and a skateboard bracket. The skateboard bracket is connected to the base sliding shoe on the base through the slide rail, and the skateboard bracket is connected to the track mold through the supporting wheel below; the skateboard bracket is connected to the formed interlocking hob shaft and the formed interlocking hob through the formed interlocking hob seat; when the mobile base moves relative to the base, the track mold moves relative to the supporting wheel, and at the same time drives the formed interlocking hob on the skateboard bracket and the tire mold on the mobile base to move relative to each other.

8. The dishwasher liner biting process according to claim 7, characterized in that: The last group of roller mechanisms are equipped with a booster cylinder and a roller guide rail. The booster cylinder is installed on the skateboard bracket through a booster cylinder mounting seat. The booster cylinder is connected to a push block, and the push block is matched with a roller guide rail fixed on the skateboard bracket. The position of the forming bite roller is adjusted by the booster cylinder, thereby adjusting the distance between the forming bite roller and the tire mold, and increasing the pressure during bite.

9. The dishwasher inner tank biting process according to claim 1, characterized in that: The dishwasher liner biting machine is also equipped with an atomizing spray system, which consists of a box body, a pressure pump assembly, a pipeline, and an atomizing nozzle. The pressure pump assembly is installed on the box body and connected to the atomizing nozzle through a pipeline. When the inner liner moves relative to the forming bite roller, the forming bite roller is driven to rotate clockwise. At this time, the atomizing nozzle sprays the oil-water mixture onto the forming bite roller. The forming bite roller with the oil-water mixture bites the inner liner again, which can prevent glue from sticking to the forming bite roller. The atomizing nozzle is installed on the tire mold frame, and the box body and the pressure pump assembly are installed on a mobile base or fixedly installed on a base.

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