Numerical control machining center for machining injection mold and using method

Abstract

The invention relates to the technical field of mold machining, in particular to a numerical control machining center for machining an injection mold and a using method.The numerical control machining center comprises a base, the front end of the base is slidably connected with a mold body, an injection molding groove is formed in the upper end of the mold body, and the front end of the base is rotationally connected with two sets of symmetrical clamping blocks; the rear ends of the two sets of clamping blocks are attached to the mold body, a coating mechanism is installed at the upper end of the base and comprises a mounting plate, a grooving mechanism is installed at the front end of the mounting plate, and a second gear and a first conveying pipe are matched with each other, so that a polishing drill bit machines an injection molding groove in the mold body; and through mutual cooperation of a second fixing rod and a first sliding rod, a grinding drill bit can gradually extend downwards according to the depth of an injection molding groove, through mutual cooperation of a first gear and an inner gear ring, part of assemblies of the coating mechanism and the grooving mechanism conduct circular motion, and therefore a mold body is machined.

Description

Technical Field

[0001] The invention relates to the technical field of mold processing, in particular to a numerical control processing center for processing injection molds and a use method thereof. Background Art

[0002] Injection molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products complete configurations and precise dimensions. Due to the wide variety of plastics and processing methods, and the varying structures of plastic molding machines and plastic products, there are also many types and structures of injection molds.

[0003] When existing injection molds are slotted and polished during production, it takes a long time to process a mold. If the tool used for slotting is worn or blunt, a large cutting force will be generated during cutting, causing the material to be torn instead of cut neatly, thus forming burrs. The mold is not cooled enough during the slotting process, and the material may deform or shrink unevenly after cutting, which will also produce burrs. Coating design can be performed during injection mold processing, but the additional processing steps will reduce production efficiency and be time-consuming and labor-intensive. For this reason, we propose a CNC machining center for processing injection molds and a method for using it. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes a CNC machining center for machining injection molds and a method for using the same.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a CNC machining center for processing injection molds, including a base, the front end of the base is slidably connected to the mold body, the upper end of the mold body is provided with an injection groove, the front end of the base is rotatably connected to two groups of symmetrical blocks, the rear ends of the two groups of blocks are fitted with the mold body, the upper end of the base is installed with a coating mechanism, the coating mechanism includes a mounting plate, and the front end of the mounting plate is installed with a grooving mechanism.

[0006] Preferably, the coating mechanism also includes three groups of electric telescopic rods fixedly connected to the base, the output shafts of the three groups of electric telescopic rods are commonly fixedly connected to an inner gear ring, the upper end of the inner gear ring is fixedly connected to a circular ring plate, the inner and outer sides of the circular ring plate are slidably connected to two groups of symmetrical rollers, the two groups of rollers are rotatably connected to the lower end of the mounting plate, a limiting block is fixedly connected between the two groups of rollers at the lower end of the mounting plate, and the sliding groove opened on the outer side of the limiting block fits with the inner and outer sides of the circular ring plate.

[0007] Preferably, a paint box is fixedly connected to the upper end of the mounting plate, a first mounting bracket is fixedly connected to the upper end of the paint box, a motor is mounted on the upper end of the first mounting bracket, a first feed pipe is arranged on the inner side of the paint box, an output shaft of the motor is fixedly connected to the first feed pipe, a plurality of stirring rods are fixedly connected to the outer side of the first feed pipe, a first feed hole is provided below the stirring rods on the outer side of the first feed pipe, a partition is fixedly connected to the inner side of the paint box, the outer side of the first feed pipe passes through the partition, a first gear is fixedly connected to the outer side of the first feed pipe near the lower end, and the outer side of the first gear is meshed with the teeth of the inner gear ring.

[0008] Preferably, a second feed pipe is slidably connected to the inner side of the first feed pipe, a second feed hole is provided on the outer side of the second feed pipe, the second feed hole is in the shape of an elongated strip, the aperture of the second feed hole is larger than the first feed hole, a first spring is provided on the outer side of the second feed pipe, one end of the first spring is fixedly connected to the second feed pipe, the other end of the first spring is fixedly connected to the first feed pipe, the lower end of the second feed pipe is fixedly connected to a discharge pipe, the discharge pipe is a T-shaped pipe design, and a plurality of discharge holes are provided on the outer side of the discharge pipe.

[0009] Preferably, the upper end of the discharge pipe is fixedly connected to a limiting tube, the inner side of the limiting tube is slidably connected to a sliding rod, a second spring is arranged on the inner side of the limiting tube, the upper end of the second spring is fixedly connected to the limiting tube, the lower end of the second spring is fixedly connected to the sliding rod, two groups of symmetrical connecting blocks are fixedly connected to the outer side of the sliding rod near the lower end, the upper ends of the two groups of connecting blocks are commonly fixedly connected to a telescopic roller brush, the upper end of the telescopic roller brush is fixedly connected to the discharge pipe, and a spherical ball is installed at the lower end of the sliding rod.

[0010] Preferably, the grooving mechanism includes a second gear fixedly connected to the outside of the first feeding pipe, the outside of the second gear is rotatably connected to the first chain, the inside of the first chain is rotatably connected to the third gear, the inside of the third gear is fixedly connected to the first fixed rod, the inside of the first fixed rod is slidably connected to the limiting slider, the lower end of the first fixed rod is fixedly connected to the second fixed rod, the lower end of the limiting slider is fixedly connected to the first sliding rod, two groups of symmetrical limiting strips are fixedly connected to the outside of the first sliding rod, the first sliding rod is slidably connected to the inner side of the second fixed rod, the outside of the second fixed rod is rotatably connected to the second mounting bracket, and the rear end of the second mounting bracket is fixedly connected to the mounting plate.

[0011] Preferably, a third spring is provided on the outer side of the first slide rod, the upper end of the third spring is fixedly connected to the second fixed rod, the lower end of the third spring is fixedly connected to the first slide rod, the lower side of the third spring of the outer side of the first slide rod is slidably connected to a limiting plate, the lower end of the limiting plate is fixedly connected to a connecting shaft, the lower end of the first slide rod is fixedly connected to a grinding drill bit, a circular hole is opened at the lower end of the second mounting bracket, and the diameter of the limiting plate is larger than the diameter of the circular hole at the lower end of the second mounting bracket.

[0012] Preferably, two groups of symmetrical arc-shaped sliding rods are fixedly connected to the outer side of the connecting shaft, and grinding plates are slidably connected to the outer sides of the two groups of arc-shaped sliding rods.

[0013] Preferably, the outer side of the second fixed rod is fixedly connected to a fixed shaft, the outer side of the fixed shaft is rotatably connected to the second bevel gear, the outer side of the second bevel gear is meshingly connected to the first bevel gear, the first bevel gear is fixedly connected to the outer side of the second fixed rod, one end of the second bevel gear is fixedly connected to a fourth gear, the outer side of the fourth gear is rotatably connected to the second chain, the inner side of the second chain is rotatably connected to the fifth gear, the fifth gear is rotatably connected to the second mounting frame via a rotating shaft, and the other end of the fifth gear is fixedly connected to a blade via a rotating shaft.

[0014] A method for using a CNC machining for machining an injection mold, which is applicable to a CNC machining center for machining an injection mold as described above, comprises the following steps:

[0015] S1, place the mold body on the base, rotate the clamping block to fix the position, then start the discharge pipe to move the slotting mechanism and the other mechanisms of the coating mechanism downward to adapt to the height required for processing, the grinding drill bit and the spherical ball both slide upward and press the third spring and the second spring respectively, so that the coating mechanism and the slotting mechanism are in place;

[0016] S2, start the motor to make the grinding drill grind the upper end of the mold body to produce an injection groove, and the first gear is meshed with the inner gear ring, so that the mounting plate drives the grinding drill to move in a circle to gradually extend the depth of the injection groove, and the third spring and the second spring are gradually opened to make the grinding drill and the spherical ball extend downward, and the centrifugal force generated during the rotation makes the grinding sheet open outward horizontally, and the burrs generated during the processing of the upper end of the mold body are ground by rotation, and the grinding sheet is guided by the arc-shaped slide bar to grind when it contacts the edge cut of the injection groove;

[0017] S3, under the kinetic energy provided by the motor, the stirring rod is driven by the first feeding pipe to stir the paint box to avoid sedimentation, and then the telescopic roller brush is gradually penetrated into the injection tank, and the liquid output by the discharge pipe is used to evenly apply it to form a protective coating in the injection tank, and the airflow generated by the blades is used to quickly dry it, and the airflow is used to cool the grinding drill bit.

[0018] Compared with the prior art, the present invention provides a CNC machining center for machining injection molds and a method for using the same, which has the following beneficial effects:

[0019] 1. Through the cooperation between the second gear and the first feed pipe, the grinding drill bit rotates and processes the upper end of the mold body to produce an injection groove. Through the cooperation between the second fixed rod and the first slide rod, the grinding drill bit can be gradually extended downward according to the depth of the injection groove until the maximum downward length. Through the cooperation between the connecting shaft and the grinding sheet, the centrifugal force generated by the rotation is used to horizontally expand and rotate rapidly within the limited range of the arc-shaped slide rod, so that the grinding sheet fits the upper end of the mold body to grind the burrs produced by the cut of the injection groove. After the grinding sheet fits the mold body, the grinding drill bit continues to move downward, and can also be moved upward through the arc-shaped slide rod to make a certain angle deflection, from horizontal to oblique angle, to grind the horizontal surface of the mold body and the downward vertical edge of the injection groove.

[0020] 2. The second bevel gear can be rotated by the second fixed rod and the first bevel gear, and the blades can be rotated by the second chain to generate airflow to quickly dry the coating liquid on one side. The airflow input from the other side of the blade can also take away part of the heat generated by the grinding drill bit and blow away the metal debris within the range, thereby achieving a better drying effect of the coating liquid while cooling it down.

[0021] 3. The first feeding pipe drives the stirring rod to stir the paint box to avoid deposition and make the coating more uniform and better. The first gear and the inner gear ring cooperate with each other to realize the circular motion of some components of the coating mechanism and the slotting mechanism, so as to process the mold body. The first feed hole intermittently overlaps with the second feed hole to avoid the waste of coating liquid and output it evenly and continuously to make the processing effect of the mold better. The cooperation between the spherical ball and the sliding rod can support the upper structure during the circular motion, making the device more stable as a whole. Then, the spherical ball can avoid unnecessary scratches on the mold. The cooperation between the telescopic roller brush and the sliding rod can evenly apply the output coating liquid to the injection groove, so that the mold has excellent lubricity, which can reduce the friction between the plastic and the mold, thereby reducing the demolding force and improving the surface finish of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of a CNC machining center for processing injection molds proposed by the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of a CNC machining center for processing injection molds proposed by the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the overall structure of a coating mechanism of a CNC machining center for processing injection molds proposed by the present invention;

[0025] Figure 4 This is an enlarged schematic cross-sectional view of a coating mechanism for a CNC machining center for processing injection molds proposed by the present invention. Figure 1 ;

[0026] Figure 5 This is an enlarged schematic cross-sectional view of a coating mechanism for a CNC machining center for processing injection molds proposed by the present invention. Figure 2 ;

[0027] Figure 6 This is an enlarged schematic cross-sectional view of a coating mechanism for a CNC machining center for processing injection molds proposed by the present invention. Figure 3 ;

[0028] Figure 7 This is a schematic diagram of the overall structure of a slotting mechanism for a CNC machining center for processing an injection mold proposed by the present invention;

[0029] Figure 8 A schematic cross-sectional view of a grooving mechanism for a CNC machining center for processing an injection mold proposed by the present invention Figure 1 ;

[0030] Fig. 9 A schematic cross-sectional view of a grooving mechanism for a CNC machining center for processing an injection mold proposed by the present invention Figure 2 ;

[0031] Fig.10 This is an enlarged schematic diagram of the partial structure of a CNC machining center slotting mechanism for processing an injection mold proposed by the present invention. Figure 1 ;

[0032] Fig.11 This is an enlarged schematic diagram of the partial structure of a CNC machining center slotting mechanism for processing an injection mold proposed by the present invention. Figure 2 .

[0033] In the figure: 1, base; 2, clamping block; 3, mold body; 4, injection groove; 5, coating mechanism; 51, first mounting frame; 52, motor; 53, coating box; 54, first feed pipe; 55, stirring rod; 56, first feed hole; 57, partition; 58, first gear; 59, second feed pipe; 510, second feed hole; 511, first spring; 512, discharge pipe; 513, limit pipe; 514, discharge hole; 515, telescopic roller brush; 516, second spring; 517, sliding rod; 518, spherical ball; 519, connecting block; 520, mounting plate; 521, roller; 522, limit block; 523, Circular ring plate; 524, inner gear ring; 525, electric telescopic rod; 6, slotting mechanism; 61, second gear; 62, first chain; 63, third gear; 64, first fixed rod; 65, second fixed rod; 66, second mounting bracket; 67, first slide bar; 68, limit strip; 69, third spring; 610, connecting shaft; 611, limit plate; 612, arc slide bar; 613, grinding sheet; 614, grinding drill bit; 615, limit slider; 616, first bevel gear; 617, fixed rotating shaft; 618, second bevel gear; 619, fourth gear; 620, second chain; 621, fifth gear; 622, blade. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] See also Figure 1-Figure 10 A CNC machining center for processing injection molds and a method of using the same include a base 1, a mold body 3 is slidably connected to the front end of the base 1, an injection groove 4 is provided at the upper end of the mold body 3, two groups of symmetrical blocks 2 are rotatably connected to the front end of the base 1, the rear ends of the two groups of blocks 2 are fitted with the mold body 3, a coating mechanism 5 is installed at the upper end of the base 1, the coating mechanism 5 includes a mounting plate 520, and a slotting mechanism 6 is installed at the front end of the mounting plate 520.

[0036] In this embodiment, the coating mechanism 5 also includes three groups of electric telescopic rods 525 fixedly connected to the base 1, and the output shafts of the three groups of electric telescopic rods 525 are commonly fixedly connected to an inner gear ring 524, and the upper end of the inner gear ring 524 is fixedly connected to a circular ring plate 523, and the inner and outer sides of the circular ring plate 523 are slidably connected to two groups of symmetrical rollers 521, and the two groups of rollers 521 are rotatably connected to the lower end of the mounting plate 520. A limiting block 522 is fixedly connected between the two groups of rollers 521 at the lower end of the mounting plate 520, and a sliding groove provided on the outer side of the limiting block 522 fits with the inner and outer sides of the circular ring plate 523.

[0037] Specifically, the electric telescopic rod 525 serves as a supporting component, so that the remaining components of the coating mechanism 5 and the slotting mechanism 6 above can be stable and can also move up and down. When the first gear 58 rotates, it will engage with the inner gear ring 524 and realize the circular motion of the mounting plate 520. The circular plate 523 and the roller 521 cooperate with each other to assist the movement of the mounting plate 520, and the limit block 522 prevents the mounting plate 520 from falling off when it rotates.

[0038] In this embodiment, a paint box 53 is fixedly connected to the upper end of the mounting plate 520, a first mounting frame 51 is fixedly connected to the upper end of the paint box 53, a motor 52 is mounted on the upper end of the first mounting frame 51, a first feed pipe 54 is arranged on the inner side of the paint box 53, an output shaft of the motor 52 is fixedly connected to the first feed pipe 54, a plurality of stirring rods 55 are fixedly connected to the outer side of the first feed pipe 54, a first feed hole 56 is provided below the stirring rods 55 on the outer side of the first feed pipe 54, a partition 57 is fixedly connected to the inner side of the paint box 53, the outer side of the first feed pipe 54 passes through the partition 57, a first gear 58 is fixedly connected to the outer side of the first feed pipe 54 near the lower end, and the outer side of the first gear 58 is meshed with the teeth of the inner gear ring 524.

[0039] Specifically, the first mounting frame 51 provides an installation for the motor 52. After the motor 52 is started, the kinetic energy used to drive the first feed pipe 54 to drive the stirring rod 55 to rotate, thereby stirring the paint box 53 to avoid internal liquid sedimentation. The first feed hole 56 can output the liquid in the paint box 53 to the outside, and the partition 57 prevents the paint box 53 from leaking downward when stirring. The first gear 58 rotates through the kinetic energy of the first feed pipe 54, and then cooperates with the teeth of the inner gear ring 524 to achieve circular motion.

[0040] In this embodiment, the inner side of the first delivery pipe 54 is slidably connected to the second delivery pipe 59, and the outer side of the second delivery pipe 59 is provided with a second feed hole 510, the second feed hole 510 is in the shape of an elongated strip, and the aperture of the second feed hole 510 is larger than that of the first feed hole 56, and the outer side of the second delivery pipe 59 is provided with a first spring 511, one end of the first spring 511 is fixedly connected to the second delivery pipe 59, and the other end of the first spring 511 is fixedly connected to the first delivery pipe 54, and the lower end of the second delivery pipe 59 is fixedly connected to a discharge pipe 512, and the discharge pipe 512 is of T-shaped design, and a plurality of discharge holes 514 are provided on the outer side of the discharge pipe 512.

[0041] Specifically, the second delivery tube 59 is caused to slide upward in the first delivery tube 54 by the upward force exerted by the spherical ball 518 when it slides, so that the first feed hole 56 is within the height range of the second feed hole 510. When the first delivery tube 54 is driven by the motor 52 to rotate, the first feed hole 56 on the outside of the first delivery tube 54 will intermittently overlap with the second feed hole 510, so that the coating liquid on the inside of the paint box 53 enters the second delivery tube 59 through the second feed hole 510, and then is discharged outward through the discharge hole 514 on the outside of the discharge tube 512.

[0042] In this embodiment, the upper end of the discharge pipe 512 is fixedly connected to the limiting tube 513, and the inner side of the limiting tube 513 is slidably connected to the sliding rod 517. A second spring 516 is arranged on the inner side of the limiting tube 513, and the upper end of the second spring 516 is fixedly connected to the limiting tube 513, and the lower end of the second spring 516 is fixedly connected to the sliding rod 517. Two groups of symmetrical connecting blocks 519 are fixedly connected to the outer side of the sliding rod 517 near the lower end, and the upper ends of the two groups of connecting blocks 519 are commonly fixedly connected to the telescopic roller brush 515, and the upper end of the telescopic roller brush 515 is fixedly connected to the discharge pipe 512, and the lower end of the sliding rod 517 is installed with a spherical ball 518.

[0043] Specifically, after the spherical ball 518 fits the upper end of the mold body 3, it is forced to move upward and compress the second spring 516. The second spring 516 causes the limit tube 513 to exert force on the discharge tube 512 through the upward force, so that the discharge tube 512 moves upward, causing the first feed hole 56 on the outside of the first delivery tube 54 to intermittently overlap with the second feed hole 510. As the depth of the injection groove 4 increases, the sliding rod 517 is gradually opened by the second spring 516, and then the telescopic roller brush 515 is pulled open through the connecting block 519. The discharge hole 514 outputs the coating liquid flow to the outside of the telescopic roller brush 515. The telescopic roller brush 515 fits the inner wall of the injection groove 4 and is evenly coated during circular motion.

[0044] In this embodiment, the slotting mechanism 6 includes a second gear 61 fixedly connected to the outer side of the first feed pipe 54, the outer side of the second gear 61 is rotatably connected to the first chain 62, the inner side of the first chain 62 is rotatably connected to the third gear 63, the inner side of the third gear 63 is fixedly connected to the first fixed rod 64, the inner side of the first fixed rod 64 is slidably connected to the limiting slider 615, the lower end of the first fixed rod 64 is fixedly connected to the second fixed rod 65, the lower end of the limiting slider 615 is fixedly connected to the first slide bar 67, the outer side of the first slide bar 67 is fixedly connected to two groups of symmetrical limiting strips 68, the first slide bar 67 is slidably connected to the inner side of the second fixed rod 65, the outer side of the second fixed rod 65 is rotatably connected to the second mounting bracket 66, and the rear end of the second mounting bracket 66 is fixedly connected to the mounting plate 520.

[0045] Specifically, the second gear 61 rotates synchronously through the first feed pipe 54, and then the second gear 61 drives the third gear 63 to rotate through the first chain 62, and the third gear 63 drives the second fixed rod 65 to rotate through the first fixed rod 64. The first slide bar 67 on the inner side of the second fixed rod 65 allows the first slide bar 67 to slide up and down through the limit bar 68, but no deflection will occur. The first slide bar 67 rotates through the second fixed rod 65, driving the grinding drill bit 614 to rotate and process the upper end of the mold body 3 to produce an injection groove 4. The second mounting frame 66 provides installation space for other structures, and then moves synchronously with the mounting plate 520.

[0046] In this embodiment, a third spring 69 is provided on the outer side of the first slide rod 67, the upper end of the third spring 69 is fixedly connected to the second fixed rod 65, the lower end of the third spring 69 is fixedly connected to the first slide rod 67, the lower side of the third spring 69 on the outer side of the first slide rod 67 is slidably connected to a limiting plate 611, the lower end of the limiting plate 611 is fixedly connected to a connecting shaft 610, the lower end of the first slide rod 67 is fixedly connected to a grinding drill bit 614, a circular hole is opened at the lower end of the second mounting frame 66, and the diameter of the limiting plate 611 is larger than the diameter of the circular hole at the lower end of the second mounting frame 66.

[0047] Specifically, the grinding drill bit 614 is pressed against the mold body 3 during grinding. As the injection groove 4 is formed and deepened, the grinding drill bit 614 gradually slides downward through the first slide bar 67 and the third spring 69 and limits the maximum extension length through the limit slider 615. The connecting shaft 610 sliding on the outside of the first slide bar 67 will move with the grinding drill bit 614. The connecting shaft 610 can slide up and down through the limit bar 68 without deflection, so the connecting shaft 610 will rotate synchronously with the grinding drill bit 614. After the lower end of the limit plate 611 is in contact with the second mounting frame 66, the connecting shaft 610 reaches the maximum downward movement range.

[0048] In this embodiment, two groups of symmetrical arc-shaped sliding rods 612 are fixedly connected to the outer side of the connecting shaft 610 , and grinding plates 613 are slidably connected to the outer sides of the two groups of arc-shaped sliding rods 612 .

[0049] Specifically, when the connecting shaft 610 rotates, the grinding sheet 613 is horizontally expanded and rapidly rotated within the limited range of the arc-shaped slide bar 612 due to centrifugal force. After the grinding drill bit 614 passes through the second mounting frame 66, the grinding sheet 613 can also pass through the second mounting frame 66. When the grinding drill bit 614 is processing and grinding in the injection groove 4, the grinding sheet 613 fits the upper end of the mold body 3 to grind the burrs generated by the cut of the injection groove 4. After the grinding sheet 613 fits the mold body 3, the grinding drill bit 614 continues to move downward, and can also be moved upward through the arc-shaped slide bar 612 to make a certain deflection of the angle, from horizontal to an oblique angle, to grind the horizontal surface of the mold body 3 and the downward vertical edge of the injection groove 4.

[0050] In this embodiment, the outer side of the second fixed rod 65 is fixedly connected to a fixed shaft 617, the outer side of the fixed shaft 617 is rotatably connected to a second bevel gear 618, the outer side of the second bevel gear 618 is meshingly connected to the first bevel gear 616, the first bevel gear 616 is fixedly connected to the outer side of the second fixed rod 65, one end of the second bevel gear 618 is fixedly connected to a fourth gear 619, the outer side of the fourth gear 619 is rotatably connected to a second chain 620, the inner side of the second chain 620 is rotatably connected to a fifth gear 621, the fifth gear 621 is rotatably connected to the second mounting frame 66 via a rotating shaft, and the other end of the fifth gear 621 is fixedly connected to a blade 622 via a rotating shaft.

[0051] Specifically, when the second fixed rod 65 rotates, it can drive the first bevel gear 616 to rotate, the first bevel gear 616 engages with the second bevel gear 618, the second bevel gear 618 rotates itself through the fixed shaft 617, and then drives the fourth gear 619 to rotate, the fourth gear 619 outputs kinetic energy through the second chain 620 to rotate the fifth gear 621, the fifth gear 621 drives the blade 622 to rotate to generate airflow to quickly dry the coating liquid on one side, and the airflow input from the other side of the blade 622 can also take away part of the heat generated by the grinding drill bit 614 to blow away the metal debris within the range, thereby achieving a better drying effect of the coating liquid while cooling it down.

[0052] A method for using a CNC machining for machining an injection mold, which is applicable to the CNC machining center for machining an injection mold, comprises the following steps:

[0053] S1, place the mold body 3 on the base 1, rotate the clamping block 2 to fix the position, then start the discharge pipe 512, so that the slotting mechanism 6 and the other mechanisms of the coating mechanism 5 above move downward to adapt to the height required for processing, the grinding drill bit 614 and the spherical ball 518 both slide upward and press the third spring 69 and the second spring 516 respectively, so that the coating mechanism 5 and the slotting mechanism 6 are in place;

[0054] S2, start the motor 52 to make the grinding drill bit 614 grind the upper end of the mold body 3 to produce the injection groove 4, and the first gear 58 is meshed with the inner gear ring 524, so that the mounting plate 520 drives the grinding drill bit 614 to move in a circular manner to gradually extend the depth of the injection groove 4, and the third spring 69 and the second spring 516 are gradually opened to make the grinding drill bit 614 and the spherical ball 518 extend downward, and the centrifugal force generated during the rotation makes the grinding sheet 613 open outward horizontally, and the burrs generated during the processing of the upper end of the mold body 3 are ground by rotation, and the grinding sheet 613 is guided by the arc-shaped slide bar 612 to grind when it contacts the edge cut of the injection groove 4;

[0055] S3, under the kinetic energy provided by the motor 52, the stirring rod 55 is driven by the first feed pipe 54 to stir the paint box 53 to avoid sedimentation, and then the telescopic roller brush 515 is gradually penetrated into the injection tank 4, and the liquid output by the discharge pipe 512 is used to evenly apply it to form a protective coating in the injection tank 4, and the airflow generated by the blades 622 is used to quickly dry it, and the airflow is used to cool the grinding drill bit 614.

[0056] Working principle: when in use, put the mold body 3 into the mounting groove at the beginning of the base 1, rotate the clamping block 2 to fix the position of the mold body 3, start the electric telescopic rod 525 to drive the output shaft to retract, and the grinding drill bit 614 and the spherical ball 518 fit the upper end of the mold body 3 and then move upward under force and respectively press the third spring 69 and the second spring 516. The second spring 516 uses the upward force to make the limit tube 513 exert force on the discharge tube 512, so that the discharge tube 512 moves upward, so that the first feed hole 56 is within the height range of the second feed hole 510, and start the motor 52 installed on the upper end of the first mounting frame 51 to rotate the second gear 61, and the second gear 61 drives the third gear 63 to rotate through the first chain 62. The third gear 63 drives the second fixed rod 65 to rotate through the first fixed rod 64. The first slide bar 67 inside the second fixed rod 65 allows the first slide bar 67 to slide up and down through the limit bar 68, but will not deflect. The first slide bar 67 rotates through the second fixed rod 65, driving the grinding drill bit 614 to rotate and process the upper end of the mold body 3 to produce the injection groove 4. Then, the kinetic energy of the motor 52 is used to rotate the first material delivery pipe 54, and the inside of the paint box 53 is stirred by the stirring rod 55 to avoid deposition. The first material delivery pipe 54 also drives the first gear 58 to rotate, and the first gear 58 is engaged with the teeth of the inner gear ring 524. The first gear 58 rotates to make the mounting plate 520 The inner side of the inner gear ring 524 moves in a circular motion, and the two sets of rollers 521 slide on the inner and outer sides of the circular plate 523 to assist the movement of the mounting plate 520, and the position of the mounting plate 520 is limited by the limit block 522, so that the grinding drill 614 grinds to form the injection groove 4. The second spring 516 that is pressed when the spherical ball 518 contacts the mold body 3 is gradually opened as the injection groove 4 is generated and gradually deepened, so that the spherical ball 518 is always attached to the lower end sliding rod 517 of the mold body 3 as a support point to assist the circular motion and avoid scratches. When the first material delivery pipe 54 rotates, the first feed hole 56 on the outer side of the first material delivery pipe 54 will intermittently overlap with the second feed hole 510, so that the coating The coating liquid on the inner side of the material box 53 enters the second delivery pipe 59 through the second feed hole 510, and then flows out through the discharge hole 514 on the outer side of the discharge pipe 512 to the telescopic roller brush 515. The telescopic roller brush 515 extends through the connecting block 519 following the sliding of the sliding rod 517 and fits the inner wall of the injection groove 4. During the circular motion, the telescopic roller brush 515 evenly applies the coating on the inner wall of the injection groove 4. When the equipment is not in use, the second delivery pipe 59 sliding inside the first delivery pipe 54 will slide downward by gravity, so that the second feed hole 510 and the first feed hole 56 are inconsistent in height and staggered to avoid liquid leakage. The first spring 511 connects the first delivery pipe 54 and the second delivery pipe 59 to prevent them from falling off.

[0057] The grinding drill bit 614 is pressed against the mold body 3 during grinding. As the injection groove 4 is formed and deepened, the grinding drill bit 614 gradually slides downward through the first slide bar 67 and the third spring 69 and limits the maximum extension length through the limit slider 615. The connecting shaft 610 sliding on the outside of the first slide bar 67 will move with the grinding drill bit 614. The connecting shaft 610 can slide up and down through the limit bar 68 without deflection, so the connecting shaft 610 will rotate synchronously with the grinding drill bit 614. When the connecting shaft 610 rotates, the grinding sheet 613 is horizontally expanded and rotated rapidly within the limited range of the arc slide bar 612 by centrifugal force, and the grinding drill bit 614 passes through After the second mounting frame 66, the grinding sheet 613 can also pass through the second mounting frame 66. After the lower end of the limiting plate 611 is attached to the second mounting frame 66, the grinding sheet 613 reaches the maximum downward movement range. When the grinding drill bit 614 is processing and grinding in the injection groove 4, the grinding sheet 613 is attached to the upper end of the mold body 3 to grind the burrs generated by the cut of the injection groove 4. After the grinding sheet 613 is attached to the mold body 3, the grinding drill bit 614 continues to move downward, and can also be moved upward by the arc-shaped sliding rod 612 to make a certain deflection angle, from horizontal to oblique angle, to grind the horizontal surface of the mold body 3 and the downward vertical edge of the injection groove 4.

[0058] When the second fixed rod 65 rotates, it can drive the first bevel gear 616 to rotate, the first bevel gear 616 meshes with the second bevel gear 618, the second bevel gear 618 rotates itself through the fixed shaft 617, and then drives the fourth gear 619 to rotate, the fourth gear 619 outputs kinetic energy through the second chain 620 to rotate the fifth gear 621, the fifth gear 621 drives the blade 622 to rotate to generate airflow to quickly dry the coating liquid on one side, and the airflow input from the other side of the blade 622 can also take away part of the heat generated by the grinding drill bit 614, so that the coating liquid can be dried better while cooling.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC machining center for machining injection molds, comprising a base (1), characterized in that: The front end of the base (1) is slidably connected to a mold body (3), an injection molding groove (4) is provided at the upper end of the mold body (3), the front end of the base (1) is rotatably connected to two groups of symmetrical clamping blocks (2), the rear ends of the two groups of clamping blocks (2) are in contact with the mold body (3), and a coating mechanism (5) is installed at the upper end of the base (1), the coating mechanism (5) includes a mounting plate (520), and a slotting mechanism (6) is installed at the front end of the mounting plate (520).

2. A CNC machining center for machining injection molds according to claim 1, characterized in that: The coating mechanism (5) further comprises three groups of electric telescopic rods (525) fixedly connected to the base (1); the output shafts of the three groups of electric telescopic rods (525) are commonly fixedly connected to an inner gear ring (524); the upper end of the inner gear ring (524) is fixedly connected to a circular ring plate (523); two groups of symmetrical rollers (521) are slidably connected to the inner and outer sides of the circular ring plate (523); the two groups of rollers (521) are rotatably connected to the lower end of the mounting plate (520); a limiting block (522) is fixedly connected between the two groups of rollers (521) at the lower end of the mounting plate (520); and a sliding groove provided on the outer side of the limiting block (522) fits the inner and outer sides of the circular ring plate (523).

3. A CNC machining center for machining injection molds according to claim 2, characterized in that: The upper end of the mounting plate (520) is fixedly connected to a paint box (53), the upper end of the paint box (53) is fixedly connected to a first mounting frame (51), the upper end of the first mounting frame (51) is mounted with a motor (52), a first feed pipe (54) is arranged on the inner side of the paint box (53), the output shaft of the motor (52) is fixedly connected to the first feed pipe (54), a plurality of groups of stirring rods (55) are fixedly connected to the outer side of the first feed pipe (54), a first feed hole (56) is provided below the stirring rods (55) on the outer side of the first feed pipe (54), a partition (57) is fixedly connected to the inner side of the paint box (53), the outer side of the first feed pipe (54) passes through the partition (57), a first gear (58) is fixedly connected to the outer side of the first feed pipe (54) near the lower end, the outer side of the first gear (58) is meshed with the teeth of the inner gear ring (524).

4. A CNC machining center for machining injection molds according to claim 3, characterized in that: The inner side of the first material delivery pipe (54) is slidably connected to a second material delivery pipe (59), and a second material feed hole (510) is provided on the outer side of the second material delivery pipe (59). The second material feed hole (510) is in the shape of an elongated strip, and the diameter of the second material feed hole (510) is larger than that of the first material feed hole (56). A first spring (511) is provided on the outer side of the second material delivery pipe (59), and one end of the first spring (511) is fixedly connected to the second material delivery pipe (59), and the other end of the first spring (511) is fixedly connected to the first material delivery pipe (54). The lower end of the second material delivery pipe (59) is fixedly connected to a discharge pipe (512), and the discharge pipe (512) is in the shape of a T-shaped pipe, and a plurality of discharge holes (514) are provided on the outer side of the discharge pipe (512).

5. A CNC machining center for machining injection molds according to claim 4, characterized in that: The upper end of the discharge pipe (512) is fixedly connected to a limiting tube (513), and the inner side of the limiting tube (513) is slidably connected to a sliding rod (517). A second spring (516) is arranged on the inner side of the limiting tube (513), and the upper end of the second spring (516) is fixedly connected to the limiting tube (513), and the lower end of the second spring (516) is fixedly connected to the sliding rod (517). Two groups of symmetrical connecting blocks (519) are fixedly connected to the outer side of the sliding rod (517) near the lower end, and the upper ends of the two groups of connecting blocks (519) are fixedly connected to a telescopic roller brush (515). The upper end of the telescopic roller brush (515) is fixedly connected to the discharge pipe (512), and a spherical ball (518) is installed at the lower end of the sliding rod (517).

6. The CNC machining center for machining injection molds according to claim 1, characterized in that: The slotting mechanism (6) comprises a second gear (61) fixedly connected to the outer side of the first material conveying pipe (54); the outer side of the second gear (61) is rotatably connected to the first chain (62); the inner side of the first chain (62) is rotatably connected to the third gear (63); the inner side of the third gear (63) is fixedly connected to the first fixed rod (64); the inner side of the first fixed rod (64) is slidably connected to a limiting slider (615); the lower end of the first fixed rod (64) is fixedly connected to the second fixed rod (65); the lower end of the limiting slider (615) is fixedly connected to the first sliding rod (67); the outer side of the first sliding rod (67) is fixedly connected to two groups of symmetrical limiting strips (68); the first sliding rod (67) is slidably connected to the inner side of the second fixed rod (65); the outer side of the second fixed rod (65) is rotatably connected to the second mounting frame (66); the rear end of the second mounting frame (66) is fixedly connected to the mounting plate (520).

7. A CNC machining center for machining injection molds according to claim 6, characterized in that: A third spring (69) is arranged on the outer side of the first slide bar (67), the upper end of the third spring (69) is fixedly connected to the second fixed rod (65), the lower end of the third spring (69) is fixedly connected to the first slide bar (67), a limit plate (611) is slidably connected below the third spring (69) on the outer side of the first slide bar (67), the lower end of the limit plate (611) is fixedly connected to a connecting shaft (610), the lower end of the first slide bar (67) is fixedly connected to a grinding drill bit (614), a circular hole is opened at the lower end of the second mounting frame (66), and the diameter of the limit plate (611) is larger than the diameter of the circular hole at the lower end of the second mounting frame (66).

8. A CNC machining center for machining injection molds according to claim 7, characterized in that: Two groups of symmetrical arc-shaped sliding rods (612) are fixedly connected to the outer side of the connecting shaft (610), and grinding plates (613) are slidably connected to the outer sides of the two groups of arc-shaped sliding rods (612).

9. A CNC machining center for machining injection molds according to claim 6, characterized in that: The outer side of the second fixed rod (65) is fixedly connected to a fixed rotating shaft (617), the outer side of the fixed rotating shaft (617) is rotatably connected to a second bevel gear (618), the outer side of the second bevel gear (618) is meshingly connected to a first bevel gear (616), the first bevel gear (616) is fixedly connected to the outer side of the second fixed rod (65), one end of the second bevel gear (618) is fixedly connected to a fourth gear (619), the outer side of the fourth gear (619) is rotatably connected to a second chain (620), the inner side of the second chain (620) is rotatably connected to a fifth gear (621), the fifth gear (621) is rotatably connected to the second mounting frame (66) via a rotating shaft, and the other end of the fifth gear (621) is fixedly connected to a blade (622) via a rotating shaft.

10. A method for using CNC machining for processing an injection mold, applicable to a CNC machining center for processing an injection mold according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, place the mold body (3) on the base (1), rotate the clamping block (2) to fix the position, then start the discharge pipe (512), so that the slotting mechanism (6) and the remaining mechanism positions of the coating mechanism (5) above move downward to adapt to the height required for processing, the grinding drill bit (614) and the spherical ball (518) both slide upward and respectively press the third spring (69) and the second spring (516), so that the coating mechanism (5) and the slotting mechanism (6) are in place; S2, start the motor (52) to make the grinding drill bit (614) grind the upper end of the mold body (3) to produce the injection groove (4), and the first gear (58) is meshed with the inner gear ring (524), so that the mounting plate (520) drives the grinding drill bit (614) to move in a circular motion to gradually extend the depth of the injection groove (4), and the third spring (69) and the second spring (516) are gradually opened to make the grinding drill bit (614) and the spherical ball (518) extend downward, and the centrifugal force generated during the rotation makes the grinding sheet (613) open outward horizontally, and the burrs generated during the processing of the upper end of the mold body (3) are ground by rotation, and the grinding sheet (613) is guided by the arc-shaped slide bar (612) so that the grinding sheet (613) is ground when it contacts the edge cut of the injection groove (4); S3, under the kinetic energy provided by the motor (52), the stirring rod (55) is driven by the first feeding pipe (54) to stir the paint box (53) to avoid sedimentation, and then the telescopic roller brush (515) is gradually penetrated into the injection tank (4), and the liquid output by the discharge pipe (512) is used to evenly apply the liquid to form a protective coating in the injection tank (4), and the airflow generated by the blades (622) is used to quickly dry the paint, and the airflow is used to cool the grinding drill bit (614).

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