An automatic positioning detection and trimming device for mold manufacturing

Abstract

The present invention discloses an automatic positioning inspection and trimming device for mold manufacturing, which relates to the field of mold manufacturing technology, including a control system, a workbench, and a trimming table. A rotating disk is installed on the workbench, and the trimming table is installed on the workbench; a rollover cylinder and a positioning cylinder in a mutually perpendicular state are installed on the workbench, a push-pull plate is installed at the output end of the rollover cylinder, and a positioning plate is installed at the output end of the positioning cylinder. The mold accessories to be inspected and trimmed are placed between the push-pull plate, the positioning plate, and the trimming table. The positioning cylinder and the rollover cylinder cooperate with each other to position the mold accessories to be inspected and trimmed, so that the center of the mold accessories is located on the rotation axis of the rotating disk, and the trimming table performs verticality inspection on each end face of the mold accessories, and at the same time uses electric spark wire cutting technology to trim the size of the mold accessories, or cleans the surface protrusions / burrs of the mold accessories, so that the size and surface accuracy of the mold accessories meet the requirements.

Description

Technical Field

[0001] The invention relates to the technical field of mold manufacturing, in particular to an automatic positioning detection and trimming device for mold manufacturing. Background Art

[0002] A mold is a tool used to make molded objects. It is a tool used in industrial production to obtain the desired product by injection molding, blow molding, extrusion, forging and other methods. The mold is composed of various parts. Different molds contain various parts. Inserts are an indispensable part of the mold and are widely used in molds. Due to the various specifications of molds, the same accessories cannot meet the use of molds of different specifications. They need to be ground at different heights to be suitable for different molds.

[0003] In addition, the verticality of the insert end faces also needs to be tested to ensure the dimensional accuracy of each insert so that it can be assembled into the mold. The existing mold accessory verticality detection equipment does not have cutting and trimming functions, and the operator is required to transfer the mold accessories to other equipment for processing, and then return to the verticality detection equipment for secondary inspection. This repetitive work leads to reduced work efficiency and increased labor costs. Summary of the invention

[0004] The object of the present invention is to provide an automatically positioned inspection and trimming device for mold manufacturing to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic positioning detection and trimming device for mold manufacturing, comprising a control system, the detection and trimming device comprising a workbench and a trimming table, the workbench is equipped with a rotating disk, and the trimming table is installed on the workbench;

[0006] The workbench is equipped with a guard plate, on which a rollover cylinder and a positioning cylinder are installed in a perpendicular state to each other, the rotating disk is located at the point where the axis of the rollover cylinder intersects the axis of the positioning cylinder, a push-pull plate is installed at the output end of the rollover cylinder, and a positioning plate is installed at the output end of the positioning cylinder, and the mold parts to be inspected and trimmed are placed between the push-pull plate, the positioning plate and the trimming table;

[0007] The control system is connected with the rotating disk, the rollover cylinder, the positioning cylinder and the trimming table. The positioning cylinder and the rollover cylinder cooperate with each other to position the mold parts to be inspected and trimmed, so that the center of the mold parts is located on the rotating axis of the rotating disk. The trimming table detects the verticality of each end face of the mold parts, and uses the electric spark wire cutting technology to trim the size of the mold parts, or clean the surface protrusions / burrs of the mold parts, so that the size and surface accuracy of the mold parts meet the requirements.

[0008] The upper surface of the workbench is provided with a mounting groove downwardly, the rotating disk is located in the mounting groove, a linkage disk is installed at the output end of the rotating disk, a slideway is provided at the lower end surface of the linkage disk, and a connecting rod is slidably installed in the slideway;

[0009] A distance box is installed at the lower end of the trimming table. The distance box is slidably installed in the installation groove by means of a slide rail. A lead screw extends from the distance box, and one end of the lead screw is fixed to the lower end of the connecting rod.

[0010] The slideway is composed of four arc-shaped slideways milled through, the center of each slideway is close to the center of the linkage disk, the rotation trajectory of the two ends of each slideway corresponds to the rotation trajectory of the vertical edge of the mold accessory, and the rotation trajectory of the center point of each slideway corresponds to the rotation trajectory of the center point of the horizontal edge on the mold accessory. A driving mechanism is installed in the distance box, and the driving mechanism causes the screw to extend out of the distance box or retract into the distance box. The driving mechanism adjusts the extension length of the screw, and the screw is fixed to the connecting rod. When the length of the screw is adjusted, the distance between the trimming table and the mold accessory is adjusted; the rotating disk drives the linkage disk to rotate, and the linkage disk drives the distance box to perform reciprocating linear motion through the slideway and the connecting rod; at the beginning of the trimming of the mold accessory, the electrode wire on the trimming table corresponds to the center point of the horizontal edge on the mold accessory, and then, under the control of the control system, the driving mechanism adjusts the extension distance of the screw; due to casting problems, the end face of the mold accessory with insufficient verticality is insufficient, and the end face of the mold accessory with insufficient verticality needs to be cut During cutting, the mold accessories are connected to the positive pole of the power supply, and the electrode wire is connected to the negative pole of the power supply. As the lead screw is retracted, the electrode wire continues to approach the mold accessories and cuts them. After cutting a groove perpendicular to the end face of the mold accessories, the linkage disk drives the mold accessories to rotate, and the electrode wire cuts the mold accessories at equal distances. Or if there are protrusions or burrs on the surface of the mold accessories due to casting problems and the surface of the mold accessories needs to be processed, the distance box retracts the lead screw to reduce the distance between the electrode wire and the surface of the mold accessories and meet the distance requirements of the wire cutting process. After that, the lead screw is no longer retracted and is fixed, the linkage disk drives the mold accessories to rotate, and the electrode wire processes the surface of the mold accessories at equal distances. On the same horizontal end face of the mold accessory, the distance from the end point of the horizontal edge line to the center of the mold accessory is greater than the distance from the center point of the horizontal edge line to the center of the mold accessory, and as the center point of the horizontal edge line continues to move toward the end point, the distance between the point on the horizontal edge line and the center of the mold accessory continues to increase. When the mold accessory rotates, the end point of the horizontal edge line, the center point of the horizontal edge line, and each point between the end point and the center point form circular trajectories of different radii on the horizontal plane. The radius of the circular trajectory formed by the center point is the smallest, and the radius of the circular trajectory formed by the end point is the largest. According to the formed circular trajectory, the circular trajectory formed by the end point is the end point of the arc slideway, and the circular trajectory formed by the center point is the center point of the arc slideway, and then the entire slideway is processed. When the mold accessory rotates driven by the linkage disk, when the vertical edge line of the mold accessory is away from the trimming table and the center point of the horizontal edge line is close to the trimming table, the screw drives the distance box to move in the direction close to the center point of the linkage disk; otherwise, the screw drives the distance box to move in the direction away from the center point of the linkage disk. Through the setting of the slideway, when the mold accessory rotates, the distance box always keeps the same processing distance with the trimming table and the mold accessory.

[0011] A negative pressure box is installed above the linkage disk, and a cavity is provided inside the negative pressure box. A partition is installed in the cavity, and a workpiece electrode is installed at the center of the partition. The workpiece electrode is connected to the positive output terminal of the power module in the control system and is connected in series with the normally open contact of the first contactor in the circuit. A negative pressure valve is installed in the cavity below the partition, and the negative pressure valve is externally connected to a negative pressure pump. A number of through holes are provided on the partition, and a support plate is installed on the negative pressure box. The negative pressure pump extracts air from the cavity through the negative pressure valve to generate negative pressure in the cavity, and uses the negative pressure to absorb the mold accessories so that the position of the mold accessories can be fixed. The first contactor is KM1, which is installed in the control circuit of the control system. The workpiece electrode is connected to the positive output terminal of the power module in the control system through the normally open contact KM1. When the mold accessories need to be cut or the surface protrusions / burrs are processed, the first contactor coil is energized, the normally open contact is closed, the workpiece electrode is energized, and the mold accessories are connected to the positive pole of the power supply.

[0012] The push-pull plate includes a fixed plate and a magnetic plate, one end surface of the fixed plate is rotatably connected to the output end of the rollover cylinder, the lower end of the other end surface of the fixed plate is rotatably connected to the magnetic plate, a spring is installed between the upper end of the fixed plate and the magnetic plate, an electromagnet is installed in the magnetic plate, and the electromagnet is connected to the control system;

[0013] A side-turning strip is installed at the edge of the installation groove, and the longitudinal section of the side-turning strip is triangular, and the hypotenuse faces the trimming table. When the rotating disk drives the mold accessories to rotate, the side-turning cylinder and the positioning cylinder are both in a contracted state. The rotating disk drives the mold accessories to rotate. After the trimming table processes the four vertical end faces, the internal cavity of the negative pressure box returns to normal pressure. Then, the cylinder rod of the side-flipping cylinder extends out and makes the magnetic plate magnetically attracted to the mold accessories. The cylinder rod pulls the mold accessories to move in the direction of the side-flipping cylinder. After the entire mold accessories pass over the side-flipping bar, the cylinder rod stops shrinking and starts to move in the opposite direction. At this time, the electromagnet is powered off, and the side-flipping cylinder pushes the mold accessories back through the push-pull plate. The force application point of the push-pull plate is above one side of the mold accessories, and the blocking point of the side-flipping bar on the mold accessories (the side-flipping bar forms a side-flipping fulcrum) is below one side of the mold accessories. When the push-pull plate pushes the mold accessories, the mold accessories are supported by the side-flipping bar and flipped in the direction of the negative pressure box. Then, the push-pull plate pushes the mold accessories to the processing position (the position of the mold accessories is determined by the extended length of the side-flipping cylinder rod to ensure that the mold accessories are pushed to the original position). Then, the negative pressure box adsorbs the mold accessories and the side-flipping cylinder is reset. The fixed plate is rotationally connected to the rollover cylinder through a pin and a torsion spring. The torsion spring keeps the fixed plate in a certain state, and the fixed plate can rotate around the pin. The magnetic plate is rotationally connected to the fixed plate, and the position is limited by a spring. The rotational connection between the fixed plate and the rollover cylinder, and the rotational connection between the magnetic plate and the fixed plate can adapt to the angle generated when the mold accessory rolls over.

[0014] The dressing table is provided with two electrode rods in the vertical direction, and two retracting rollers are provided on the outer side of the dressing table, and the retracting rollers are wound with electrode wires, and the electrode wires pass through the two electrode rods;

[0015] The electrode rod located at the top is connected to the negative terminal of the power module in the control system and the normally open contact of the second contactor is connected in series in the circuit;

[0016] The electrode rod located at the bottom is connected to the positive terminal of the power module in the control system, and the normally closed contact of the first contactor, the ammeter, and the normally open contact of the second contactor are connected in series in the circuit;

[0017] The electrode rod located below is electrically connected to the electrode rod located above and the normally open contact of the first contactor is connected in series in the connecting circuit. One of the retractable rollers is connected to a drive motor (not shown in the figure), and the drive motor rotates the retractable roller. The second contactor is KM2, and the second contactor is connected to the control circuit of the control system. When the electrode wire needs to be connected to the positive and negative poles of the power module, the coil of the second contactor is energized, the normally open contact KM2 of the second contactor is closed, and the current flows through the normally open contact KM2, the ammeter, the normally closed contact KM1, the electrode rod, the electrode wire, the electrode rod and the normally open contact KM2, and finally flows into the negative pole of the power module; the electrode wire is connected to the positive pole, and the current in the circuit is detected by the ammeter. The length L of the electrode wire connected to the circuit is calculated by the formula U=IR and R=PL / S. When the surface of the mold accessories needs to be processed or cut, the first contactor KM1 coil is energized, the normally closed contact KM1 is disconnected, and the normally open contact KM1 is closed, so that the workpiece electrode is connected to the positive pole of the power supply, and the electrode wire is connected to the negative pole of the power supply, so that the dressing table uses the electric spark wire cutting technology to process the mold accessories.

[0018] Two driving shafts are installed inside the dressing table, each of which is connected to a pitch-adjusting motor, a sprocket is installed on the driving shaft, chains are installed on the two sprockets, two bearing plates are installed on the chain, the two bearing plates are respectively installed on both sides of the chain, each electrode rod is installed on the bearing plate, and a slide groove is provided on the dressing table at a position corresponding to the electrode rod;

[0019] Driven by the distance-adjusting motor, the chain moves the two bearing plates closer to each other or farther away from each other;

[0020] An electrode head is installed at one end of the electrode rod, and two symmetrical electrode balls and an electrode ring are installed in the electrode head. The electrode ring is located outside the electrode ball and connected to the power electrode of the power module. The electrode ball is made of metal material, and the current is transmitted to the electrode wire through the electrode ring and the electrode ball.

[0021] Two key slots are symmetrically arranged on the electrode rod, and a slide rail slider is installed on the trimming table at the position of the slide slot, and the slider is located in the key slot;

[0022] A driving chamber is provided in the bearing plate, an excitation coil is installed on the inner wall of the driving chamber, the excitation coil is connected to the control system, a rotor sleeve is threadedly connected to the electrode rod, the rotor sleeve is rotatably installed in the driving chamber, and a plurality of permanent magnets are installed on the outer side of the rotor sleeve. When the end face of the mold accessory needs to be tested for verticality, the two bearing plates are driven by the chain to approach each other, and then the two electrode rods are brought closer to each other until the distance between the two electrode rods is equal to the height of each end face of the mold accessory. After that, the distance box shrinks the screw rod, so that the electrode rod gradually approaches the end face of the mold accessory and finally abuts against the end face of the mold accessory. When the electrode rod abuts against the end face of the mold accessory, as the screw rod shrinks, the electrode rod is gradually squeezed into the trimming table. During the squeezing process, the electrode rod drives the rotor sleeve to rotate, so that current is generated in the excitation coil; the control system compares the time when the excitation coils in the two bearing plates start to generate current. If the current time generated by the excitation coils in the two bearing plates is the same, it means that the end face of the mold accessory is vertical, otherwise, it means that the end face of the mold accessory is not vertical. The control system calculates the time difference between the two excitation coils generating current, and calculates the forward speed of the distance box according to the rotation speed of the screw rod, and finally calculates the cutting thickness of the non-vertical end face of the mold part. The control system monitors the time when the excitation coils in the two carrier plates generate current. When current is generated in both excitation coils, the screw rod stops rotating when the second excitation coil generates current. Then, the length L of the electrode wire connected to the circuit is calculated by the formula U=IR and R=PL / S. The calculated length L is calculated with the initial length L between the two electrode rods (that is, when the electrode rod is not in contact with the mold part). Using c 2 -b 2 =a 2 The value of a is calculated, which is the thickness of the non-vertical end face of the mold accessory that needs to be cut. Through two calculations of the thickness of the non-vertical end face to be cut, data verification is performed to ensure cutting accuracy. After the verticality detection is completed, the two electrode rods are reset under the drive of the chain. At this time, the distance between the two electrode rods is greater than the length of each end face of the mold accessory. This length is used to process the surface of the mold accessory.

[0023] The excitation coil is energized to generate a magnetic field and drive the rotor sleeve to rotate. The rotation of the rotor sleeve causes the electrode rod to extend. By adjusting the extension length of the two electrode rods, it can be used to position the mold accessories to ensure the position of the mold accessories during processing.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0025] 1. The positioning cylinder and the rollover cylinder cooperate with each other to position the mold parts to be inspected and trimmed, so that the center of the mold parts is located on the rotation axis of the rotating disk. The trimming table detects the verticality of each end face of the mold parts. At the same time, the size of the mold parts is trimmed by using the electric spark wire cutting technology, or the surface protrusions / burrs of the mold parts are cleaned to make the size and surface accuracy of the mold parts meet the requirements. The multi-functional effect is achieved by the multi-purpose of the trimming table.

[0026] 2. The control system calculates the time difference between the two excitation coils generating current, and calculates the forward speed of the distance box according to the rotation speed of the screw rod, and finally calculates the cutting thickness of the non-vertical end face of the mold part. The control system monitors the time when the excitation coils in the two carrier plates generate current. When current is generated in both excitation coils, the screw rod stops rotating when the second excitation coil generates current. Then, the length L of the electrode wire connected to the circuit is calculated by the formula U=IR and R=PL / S. The calculated length L is calculated with the initial length L between the two electrode rods (that is, when the electrode rod is not in contact with the mold part). Using c 2 -b 2 =a 2 The value of a is calculated, which is the thickness of the non-vertical end face of the mold part that needs to be cut. Through two calculations of the thickness of the non-vertical end face to be cut, data verification is performed to ensure cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a front half-section view of the overall structure of the present invention;

[0029] Figure 2 It is a top view of the overall structure of the present invention;

[0030] Figure 3 It is a front view of the interior of the negative pressure box of the present invention;

[0031] Figure 4 This is a bottom view of the linkage disk of the present invention;

[0032] Figure 5 It is a schematic diagram of the rotation of the magnetic attraction plate of the present invention;

[0033] Figure 6 is a front view of the interior of the dressing table of the present invention;

[0034] Figure 7 It is a left side view of the dressing table of the present invention;

[0035] Figure 8It is a left side view of the connection between the chain and the load-bearing plate of the present invention;

[0036] Fig. 9 The present invention Figure 6 A partial enlarged view of the middle A area;

[0037] Fig.10 The present invention Figure 6 A partial enlarged view of the middle B area;

[0038] Fig.11 It is a left view of the interior of the bearing plate of the present invention;

[0039] Fig.12 It is a left side view of the dressing table and the electrode rod of the present invention being slidably connected;

[0040] Fig.13 It is a circuit connection schematic diagram of the workpiece electrode and the electrode wire of the present invention.

[0041] In the figure:

[0042] 1. Workbench; 101. Rotating disk; 102. Linkage disk; 1021. Slideway; 103. Negative pressure box; 1031. Workpiece electrode; 1032. Negative pressure valve; 104. Side-turning cylinder; 105. Side-turning strip; 106. Push-pull plate; 1061. Fixed plate; 1062. Magnetic plate; 107. Positioning cylinder;

[0043] 2. Mould accessories;

[0044] 3. Dressing table; 301. Distance box; 302. Distance adjustment motor; 303. Driving shaft; 304. Chain; 305. Carrying plate; 3051. Rotor sleeve; 306. Retracting roller; 307. Electrode wire; 308. Electrode rod; 3081. Electrode head; 3082. Electrode ball;

[0045] 4. Control system. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-Figure 13 The present invention provides a technical solution: an automatic positioning detection and trimming device for mold manufacturing, including a control system 4, the detection and trimming device includes a workbench 1 and a trimming table 3, a rotating disk 101 is installed on the workbench 1, and the trimming table 3 is installed on the workbench 1;

[0048] A guard plate is installed on the workbench 1, on which a rollover cylinder 104 and a positioning cylinder 107 are installed in a mutually perpendicular state. The rotating disk 101 is located at the point where the axis of the rollover cylinder 104 and the axis of the positioning cylinder 107 intersect. A push-pull plate 106 is installed at the output end of the rollover cylinder 104, and a positioning plate is installed at the output end of the positioning cylinder 107. The mold parts 2 to be inspected and trimmed are placed between the push-pull plate 106, the positioning plate and the trimming table 3. The rollover cylinder 104 and the positioning cylinder 107 are both electric telescopic cylinders, and the rotating disk 101 is an electric rotating disk.

[0049] The control system 4 is connected to the rotating disk 101, the rollover cylinder 104, the positioning cylinder 107 and the trimming table 3. The positioning cylinder 107 and the rollover cylinder 104 cooperate with each other to position the mold component 2 to be inspected and trimmed, so that the center of the mold component 2 is located on the rotating axis of the rotating disk 101. The trimming table 3 performs verticality inspection on each end face of the mold component 2, and at the same time uses the electric spark wire cutting technology to trim the size of the mold component 2, or clean the surface protrusions / burrs of the mold component 2, so that the size and surface accuracy of the mold component 2 meet the requirements.

[0050] The upper end surface of the workbench 1 is provided with a mounting groove downwardly, the rotating disk 101 is located in the mounting groove, the output end of the rotating disk 101 is provided with a linkage disk 102, the lower end surface of the linkage disk 102 is provided with a slideway 1021, and a connecting rod is slidably installed in the slideway 1021;

[0051] The slide 1021 is composed of four arc-shaped slides milled through, the center of each slide is close to the center of the linkage disk 102, the rotation trajectory of the two ends of each slide corresponds to the rotation trajectory of the vertical edge of the mold accessory 2, and the rotation trajectory of the center point of each slide corresponds to the rotation trajectory of the center point of the horizontal edge of the mold accessory 2.

[0052] The rotating disk 101 drives the linkage disk 102 to rotate, and the linkage disk 102 drives the fixed distance box 301 to perform reciprocating linear motion through the slideway 1021 and the connecting rod.

[0053] A distance box 301 is installed at the lower end of the dressing table 3. A screw rod extends from the distance box 301. One end of the screw rod is fixed to the lower end of the connecting rod. A driving mechanism is installed in the distance box 301. The driving mechanism makes the screw rod extend out of the distance box 301 or retract into the distance box 301. The driving mechanism regulates the extension length of the screw rod. The screw rod is fixed to the connecting rod. When the length of the screw rod is adjusted, the distance between the dressing table 3 and the mold accessory 2 is adjusted.

[0054] At the beginning of the trimming of the mold component 2, the electrode wire 307 on the trimming table 3 corresponds to the center point of the horizontal edge line on the mold component 2. After that, under the control of the control system 4, the driving mechanism adjusts the extension distance of the lead screw;

[0055] When the end face of the mold accessory 2 is not vertical enough due to casting problems and needs to be cut, the mold accessory 2 is connected to the positive pole of the power supply, and the electrode wire 307 is connected to the negative pole of the power supply. As the lead screw is retracted, the electrode wire 307 continuously approaches the mold accessory 2 and cuts it. After cutting a groove perpendicular to the end face of the mold accessory 2, the linkage disk 102 drives the mold accessory 2 to rotate, and the electrode wire 307 performs equidistant cutting on the mold accessory 2.

[0056] When there are protrusions or burrs on the surface of the mold accessory 2 due to casting problems and the surface of the mold accessory 2 needs to be processed, the distance box 301 retracts the screw rod to reduce the distance between the electrode wire 307 and the surface of the mold accessory 2 and meet the distance requirements of the wire cutting processing process. After that, the screw rod is no longer retracted and is fixed, the linkage disk 102 drives the mold accessory 2 to rotate, and the electrode wire 307 performs equidistant processing on the surface of the mold accessory 2.

[0057] When the mold component 2 rotates driven by the linkage disk 102, when the vertical sideline of the mold component 2 is away from the trimming table 3 and the center point of the horizontal sideline is close to the trimming table 3, the screw drives the distance box 301 to move toward the center point of the linkage disk 102; conversely, the screw drives the distance box 301 to move away from the center point of the linkage disk 102. Through the setting of the slideway 1021, when the mold component 2 rotates, the distance box 301 always keeps the same processing distance with the trimming table 3 and the mold component 2.

[0058] A negative pressure box 103 is installed above the linkage disk 102, and a cavity is opened inside the negative pressure box 103. A partition is installed in the cavity, and a workpiece electrode 1031 is installed at the center of the partition. The workpiece electrode 1031 is connected to the positive output terminal of the power module in the control system 4 and the normally open contact of the first contactor is connected in series in the circuit. A negative pressure valve 1032 is installed at a position below the partition in the cavity. The negative pressure valve 1032 is externally connected to a negative pressure pump, and a number of through holes are opened on the partition. A support plate is placed on the negative pressure box 103.

[0059] The negative pressure pump extracts the air in the cavity through the negative pressure valve 1032, so that negative pressure is generated in the cavity, and the negative pressure is used to absorb the mold accessory 2, so that the position of the mold accessory 2 can be fixed. The first contactor is KM1, which is installed in the control circuit of the control system 4. The workpiece electrode 1031 is connected to the positive output terminal of the power module in the control system 4 through the normally open contact KM1. When the mold accessory 2 needs to be cut or the surface protrusion / burr is processed, the first contactor coil is energized, the normally open contact is closed, and the workpiece electrode 1031 is energized, so that the mold accessory 2 is connected to the positive pole of the power supply.

[0060] The push-pull plate 106 includes a fixed plate 1061 and a magnetic plate 1062. One end surface of the fixed plate 1061 is rotatably connected to the output end of the rollover cylinder 104. The lower end of the other end surface of the fixed plate 1061 is rotatably connected to the magnetic plate 1062. A spring is installed between the upper end of the fixed plate 1061 and the magnetic plate 1062. An electromagnet is installed in the magnetic plate 1062, and the electromagnet is connected to the control system 4.

[0061] A side-turning strip 105 is installed at the edge of the installation groove. The side-turning strip 105 has a triangular longitudinal section with the hypotenuse facing the trimming table 3 .

[0062] When the rotating disk 101 drives the mold accessory 2 to rotate, the side-turning cylinder 104 and the positioning cylinder 107 are both in the contracted state. The rotating disk 101 drives the mold accessory 2 to rotate. After the trimming table 3 has processed the four vertical end faces, the internal cavity of the negative pressure box 103 returns to normal pressure. After that, the cylinder rod of the side-turning cylinder 104 extends and makes the magnetic plate 1062 magnetically attracted to the mold accessory 2. The cylinder rod pulls the mold accessory 2 to move in the direction of the side-turning cylinder 104. After the entire mold accessory 2 passes over the side-turning bar 105, the cylinder rod stops contracting and starts to move in the opposite direction. At this time, the electromagnet is powered off, and the side-turning cylinder 104 passes through the push-pull plate 106. 06 pushes the mold accessory 2 back, the force point of the push-pull plate 106 is above one side of the mold accessory 2, and the blocking point of the rollover bar 105 on the mold accessory 2 is below one side of the mold accessory 2. When the push-pull plate 106 pushes the mold accessory 2, the mold accessory 2 is rolled over in the direction of the negative pressure box 103 under the support of the rollover bar 105. After that, the push-pull plate 106 pushes the mold accessory 2 to the processing position, and then the negative pressure box 103 absorbs the mold accessory 2, and the rollover cylinder 104 is reset. The fixed plate 1061 is rotatably connected to the rollover cylinder 104 through a pin and a torsion spring. The torsion spring keeps the fixed plate 1061 in a certain state, and the fixed plate 1061 can rotate around the pin. The magnetic plate 1062 is rotatably connected to the fixed plate 1061, and the position is limited by a spring. The rotational connection between the fixed plate 1061 and the rollover cylinder 104, and the rotational connection between the magnetic plate 1062 and the fixed plate 1061 can adapt to the angle generated when the mold accessory 2 rolls over.

[0063] Two electrode rods 308 are installed in the vertical direction on the dressing table 3. A jet pipe is installed on the dressing table 3. The jet pipe is connected to the liquid supply pipeline to spray the working fluid so that the working fluid flows between the mold parts 2 and the electrode wire 307. The working fluid finally flows out through the liquid outlet on the workbench 1. Two retracting rollers 306 are installed on the outer side of the dressing table 3. The electrode wire 307 is wound on the retracting rollers 306. The electrode wire 307 passes through the two electrode rods 308.

[0064] The electrode rod 308 located at the top is connected to the negative terminal of the power module in the control system 4 and the normally open contact of the second contactor is connected in series in the circuit;

[0065] The electrode rod 308 located at the bottom is connected to the positive terminal of the power module in the control system 4, and the normally closed contact of the first contactor, the ammeter, and the normally open contact of the second contactor are connected in series in the circuit;

[0066] The electrode rod 308 located below is electrically connected to the electrode rod 308 located above, and the normally open contact of the first contactor is connected in series in the connection circuit. One of the retractable rollers 306 is connected to the drive motor, and the drive motor rotates the retractable roller 306. The second contactor is KM2, and the second contactor is connected to the control circuit of the control system 4. When it is necessary to connect the electrode wire 307 to the positive and negative poles of the power module, the coil of the second contactor is energized, the normally open contact KM2 of the second contactor is closed, and the current flows through the normally open contact KM2, the ammeter, the normally closed contact KM1, the electrode rod 308, the electrode wire 307, the electrode rod 308 and the normally open contact KM2, and finally flows into the negative pole of the power module; the electrode wire 307 is connected to the positive pole, and the current in the circuit is detected by the ammeter. The length L of the electrode wire 307 connected to the circuit is calculated by the formula U=IR and R=PL / S. When the surface of the mold accessory 2 needs to be processed or cut, the first contactor KM1 coil is energized, the normally closed contact KM1 is disconnected, and the normally open contact KM1 is closed, so that the workpiece electrode 1031 is connected to the positive pole of the power supply, and the electrode wire 307 is connected to the negative pole of the power supply, so that the dressing table 3 uses the electric spark wire cutting technology to process the mold accessory 2.

[0067] Two driving shafts 303 are installed inside the dressing table 3, each driving shaft 303 is connected to a pitch-adjusting motor 302, a sprocket is installed on the driving shaft 303, a chain 304 is installed on the two sprockets, two bearing plates 305 are installed on the chain 304, the two bearing plates 305 are respectively installed on both sides of the chain 304, each electrode rod 308 is installed on the bearing plate 305, and a slide groove is opened at the position corresponding to the electrode rod 308 on the dressing table 3;

[0068] Driven by the distance-adjusting motor 302 , the chain 304 moves the two bearing plates 305 closer to each other or farther away from each other;

[0069] An electrode head 3081 is installed at one end of the electrode rod 308. Two symmetrical electrode balls 3082 and an electrode ring are installed in the electrode head 3081. The electrode ring is located outside the electrode ball 3082 and connected to the power electrode of the power module. The electrode ball 3082 is made of metal material, and the current is transmitted to the electrode wire 307 through the electrode ring and the electrode ball.

[0070] Two key slots are symmetrically provided on the electrode rod 308, and a slide rail slider is installed at the position of the slide slot on the dressing table 3, and the slider is located in the key slot;

[0071] A driving chamber is provided in the bearing plate 305 , an excitation coil is installed on the inner wall of the driving chamber, the excitation coil is connected to the control system 4 , a rotor sleeve 3051 is threadedly connected to the electrode rod 308 , the rotor sleeve 3051 is rotatably installed in the driving chamber, and a plurality of permanent magnets are installed on the outer side of the rotor sleeve 3051 .

[0072] When it is necessary to detect the verticality of the end face of the mold accessory 2, the two bearing plates 305 are driven by the chain 304 to approach each other, and then the two electrode rods 308 are brought close to each other until the distance between the two electrode rods 308 is equal to the height of each end face of the mold accessory 2. After that, the distance box 301 contracts the lead screw, so that the electrode rod 308 gradually approaches the end face of the mold accessory 2 and finally abuts against the end face of the mold accessory 2. When the electrode rod 308 abuts against the end face of the mold accessory 2, as the lead screw contracts, the electrode rod 308 is gradually squeezed into the trimming table 3. During the squeezing process, the electrode rod 308 drives the rotor sleeve 3051 to rotate, so that current is generated in the excitation coil; the control system 4 compares the time when the excitation coils in the two bearing plates 305 start to generate current. If the time when the excitation coils in the two bearing plates 305 generate current is the same, it means that the end face of the mold accessory 2 is vertical, otherwise, it means that the end face of the mold accessory 2 is not vertical. The control system calculates the time difference between the two excitation coils generating current, and calculates the forward speed of the distance box 301 according to the rotation speed of the screw rod, and finally calculates the cutting thickness of the non-vertical end surface of the mold component 2. The control system 4 monitors the time when the excitation coils in the two carrier plates 305 generate current. When current is generated in both excitation coils, the screw rod stops rotating when the second excitation coil generates current. Then, the length L of the electrode wire 307 connected to the circuit is calculated by the formula U=IR and R=PL / S. The hypotenuse of the calculated length L triangle is calculated with the length L between the first two electrode rods 308, and the long right-angled side of the triangle is calculated by c. 2 -b 2 =a 2 The value of a is calculated, which is the thickness of the non-vertical end face of the mold accessory 2 that needs to be cut. Through two calculations of the thickness of the non-vertical end face to be cut, data verification is performed to ensure cutting accuracy. After the belt verticality detection is completed, the two electrode rods 308 are reset under the drive of the chain 304. At this time, the distance between the two electrode rods 308 is greater than the length of each end face of the mold accessory 2. This length is used to process the surface of the mold accessory 2.

[0073] Working principle of the present invention:

[0074] The operator places the mold accessory 2 on the negative pressure box 103, and the positioning cylinder 107 and the side-turning cylinder 104 cooperate with each other to position the mold accessory 2 to be inspected and trimmed, so that the center of the mold accessory 2 is located on the rotation axis of the rotating disk 101. After that, the cylinder rods of the positioning cylinder 107 and the side-turning cylinder 104 contract, and the negative pressure pump extracts the air in the cavity through the negative pressure valve 1032, so that negative pressure is generated in the cavity, and the mold accessory 2 is adsorbed by the negative pressure to fix the position of the mold accessory 2.

[0075] When it is necessary to detect the verticality of the end face of the mold accessory 2, the two bearing plates 305 are driven by the chain 304 to approach each other, and then the two electrode rods 308 are brought close to each other until the distance between the two electrode rods 308 is equal to the height of each end face of the mold accessory 2. After that, the distance box 301 contracts the lead screw, so that the electrode rod 308 gradually approaches the end face of the mold accessory 2 and finally abuts against the end face of the mold accessory 2. When the electrode rod 308 abuts against the end face of the mold accessory 2, as the lead screw contracts, the electrode rod 308 is gradually squeezed into the trimming table 3. During the squeezing process, the electrode rod 308 drives the rotor sleeve 3051 to rotate, so that current is generated in the excitation coil; the control system 4 compares the time when the excitation coils in the two bearing plates 305 start to generate current. If the time when the excitation coils in the two bearing plates 305 generate current is the same, it means that the end face of the mold accessory 2 is vertical, otherwise, it means that the end face of the mold accessory 2 is not vertical. The control system calculates the time difference between the two excitation coils generating current, and calculates the forward speed of the distance box 301 according to the rotation speed of the screw rod, and finally calculates the cutting thickness of the non-vertical end surface of the mold component 2. The control system 4 monitors the time when the excitation coils in the two carrier plates 305 generate current. When current is generated in both excitation coils, the screw rod stops rotating when the second excitation coil generates current. Then, the length L of the electrode wire 307 connected to the circuit is calculated by the formula U=IR and R=PL / S. The hypotenuse of the calculated length L triangle is calculated with the length L between the first two electrode rods 308, and the long right-angled side of the triangle is calculated by c. 2 -b 2 =a 2 The value of a is calculated, that is, the thickness of the non-vertical end face of the mold component 2 that needs to be cut. The thickness of the non-vertical end face to be cut is calculated twice, and data verification is performed to ensure cutting accuracy.

[0076] After the belt verticality detection is completed, the two electrode rods 308 are reset under the drive of the chain 304 .

[0077] When the surface of the mold accessory 2 needs to be processed or cut, the first contactor KM1 coil is energized, the normally closed contact KM1 is disconnected, and the normally open contact KM1 is closed, so that the workpiece electrode 1031 is connected to the positive pole of the power supply, and the electrode wire 307 is connected to the negative pole of the power supply, so that the dressing table 3 uses the electric spark wire cutting technology to process the mold accessory 2.

[0078] When it is necessary to cut the end face of the mold accessory 2 that is not vertical enough, the mold accessory 2 is connected to the positive pole of the power supply, and the electrode wire 307 is connected to the negative pole of the power supply. As the lead screw is retracted, the electrode wire 307 continuously approaches the mold accessory 2 and cuts it. After cutting a groove perpendicular to the end face of the mold accessory 2, the linkage disk 102 drives the mold accessory 2 to rotate, and the electrode wire 307 performs equidistant cutting on the mold accessory 2.

[0079] When there are protrusions or burrs on the surface of the mold accessory 2 due to casting problems and the surface of the mold accessory 2 needs to be processed, the distance box 301 retracts the screw rod to reduce the distance between the electrode wire 307 and the surface of the mold accessory 2 and meet the distance requirements of the wire cutting processing process. After that, the screw rod is no longer retracted and is fixed, the linkage disk 102 drives the mold accessory 2 to rotate, and the electrode wire 307 performs equidistant processing on the surface of the mold accessory 2.

[0080] The rotating disk 101 drives the mold accessory 2 to rotate. After the trimming table 3 processes the four vertical end faces, the internal cavity of the negative pressure box 103 returns to normal pressure. After that, the cylinder rod of the side-turning cylinder 104 extends and makes the magnetic plate 1062 magnetically attracted to the mold accessory 2. The cylinder rod pulls the mold accessory 2 to move in the direction of the side-turning cylinder 104. After the entire mold accessory 2 passes over the side-turning bar 105, the cylinder rod stops contracting and starts to move in the opposite direction. At this time, the electromagnet is powered off, and the side-turning cylinder 104 pushes the mold accessory 2 back through the push-pull plate 106. The force application point of the push-pull plate 106 is above one side of the mold accessory 2, and the blocking point of the side flipping bar 105 on the mold accessory 2 is below one side of the mold accessory 2. When the push-pull plate 106 pushes the mold accessory 2, the mold accessory 2 is flipped toward the negative pressure box 103 under the support of the side flipping bar 105. Then, the push-pull plate 106 pushes the mold accessory 2 to the processing position, and then the negative pressure box 103 absorbs the mold accessory 2, and the side flipping cylinder 104 is reset, so that the trimming table 3 can process the remaining two end faces.

[0081] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0082] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic positioning inspection and trimming device for mold manufacturing, comprising a control system (4), characterized in that: The detection and trimming device comprises a workbench (1) and a trimming table (3); a rotating disk (101) is mounted on the workbench (1); and the trimming table (3) is mounted on the workbench (1); The workbench (1) is provided with a guard plate, on which a rollover cylinder (104) and a positioning cylinder (107) are installed in a mutually perpendicular state, the rotating disk (101) is located at the point where the axis of the rollover cylinder (104) intersects with the axis of the positioning cylinder (107), a push-pull plate (106) is installed at the output end of the rollover cylinder (104), and a positioning plate is installed at the output end of the positioning cylinder (107), and the mold accessory (2) to be inspected and trimmed is placed between the push-pull plate (106), the positioning plate and the trimming table (3); The control system (4) is connected to the rotating disk (101), the rollover cylinder (104), the positioning cylinder (107) and the trimming table (3); The upper end surface of the workbench (1) is provided with a mounting groove downwardly, the rotating disk (101) is located in the mounting groove, a linkage disk (102) is installed at the output end of the rotating disk (101), a slideway (1021) is provided on the lower end surface of the linkage disk (102), and a connecting rod is slidably installed in the slideway (1021); A distance box (301) is installed at the lower end of the trimming table (3), and the distance box (301) is slidably installed in the installation groove. A lead screw extends from the distance box (301), and one end of the lead screw is fixed to the lower end of the connecting rod; A negative pressure box (103) is installed above the linkage disk (102), a cavity is provided inside the negative pressure box (103), a partition is installed in the cavity, a workpiece electrode (1031) is installed at the center of the partition, the workpiece electrode (1031) is connected to the positive output terminal of the power module in the control system (4) and is connected in series with the normally open contact of the first contactor in the circuit, a negative pressure valve (1032) is installed in the cavity below the partition, the negative pressure valve (1032) is externally connected to a negative pressure pump, a plurality of through holes are provided on the partition, and a support plate is placed on the negative pressure box (103); The dressing table (3) is provided with two electrode rods (308) in a vertical direction, and two retracting rollers (306) are provided on the outer side of the dressing table (3), and an electrode wire (307) is wound around the retracting roller (306), and the electrode wire (307) passes through the two electrode rods (308); The electrode rod (308) located at the top is connected to the negative terminal of the power module in the control system (4), and a normally open contact of a second contactor is connected in series in the circuit; The electrode rod (308) located at the bottom is connected to the positive terminal of the power module in the control system (4), and the normally closed contact of the first contactor, the ammeter, and the normally open contact of the second contactor are connected in series in the circuit; The electrode rod (308) located below is electrically connected to the electrode rod (308) located above, and a normally open contact of a first contactor is connected in series in the connection circuit; Two drive shafts (303) are installed inside the dressing table (3), each of the drive shafts (303) is connected to a pitch-adjusting motor (302), a sprocket is installed on the drive shaft (303), a chain (304) is installed on the two sprockets, two bearing plates (305) are installed on the chain (304), the two bearing plates (305) are respectively installed on both sides of the chain (304), each electrode rod (308) is installed on the bearing plate (305), and a slide groove is provided at a position corresponding to the electrode rod (308) on the dressing table (3); Driven by the distance-adjusting motor (302), the chain (304) causes the two bearing plates (305) to move closer to each other or farther away from each other; An electrode head (3081) is installed at one end of the electrode rod (308), and two symmetrical electrode balls (3082) and an electrode ring are installed in the electrode head (3081). The electrode ring is located outside the electrode ball (3082) and is connected to a power electrode of a power module.

2. The automatic positioning mold manufacturing detection and trimming device according to claim 1 is characterized in that: The slideway (1021) is composed of four arc-shaped slideways that are milled through, the center of each slideway being close to the center of the linkage disk (102), the rotation trajectory of the two ends of each slideway corresponding to the rotation trajectory of the vertical edge of the mold accessory (2), and the rotation trajectory of the center point of each slideway corresponding to the rotation trajectory of the center point of the horizontal edge of the mold accessory (2).

3. The automatic positioning mold manufacturing detection and trimming device according to claim 2 is characterized in that: The push-pull plate (106) comprises a fixed plate (1061) and a magnetic plate (1062); an end surface on one side of the fixed plate (1061) is rotatably connected to the output end of the rollover cylinder (104); a lower end of an end surface on the other side of the fixed plate (1061) is rotatably connected to the magnetic plate (1062); a spring is installed between the upper end of the fixed plate (1061) and the magnetic plate (1062); an electromagnet is installed in the magnetic plate (1062); and the electromagnet is connected to the control system (4); A rollover strip (105) is installed at the edge of the installation groove; the rollover strip (105) has a triangular longitudinal section, with the hypotenuse facing the trimming table (3).

4. The automatic positioning mold manufacturing inspection and trimming device according to claim 1, characterized in that: Two key slots are symmetrically provided on the electrode rod (308); a slide rail slider is installed on the trimming table (3) at the position of the slide slot, and the slider is located in the key slot; A driving chamber is provided in the bearing plate (305), an excitation coil is installed on the inner wall of the driving chamber, the excitation coil is connected to the control system (4), a rotor sleeve (3051) is threadedly connected to the electrode rod (308), the rotor sleeve (3051) is rotatably installed in the driving chamber, and a plurality of permanent magnets are installed on the outer side of the rotor sleeve (3051).

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