Die ejector pin numerical control machine tool capable of automatically feeding and discharging

Abstract

The invention discloses a die ejector pin numerical control machine tool capable of achieving automatic feeding and discharging, and belongs to the technical field of numerical control machine tools, the die ejector pin numerical control machine tool comprises an electric workbench and a three-jaw chuck installed on the numerical control machine tool, the three-jaw chuck is used for clamping and fixing a die ejector pin, and a supporting frame is slidably installed on the side, away from the three-jaw chuck, of the upper end of the electric workbench; a fixed disc is fixedly installed on the supporting frame, a sliding groove is formed in the end, close to the three-jaw chuck, of the fixed disc, a detection assembly is installed in the sliding groove, the detection assembly comprises a moving block installed in the sliding groove in a sliding mode, a contraction groove is formed in the end, close to the three-jaw chuck, of the moving block, and a plurality of moving plates are installed in the contraction groove in a sliding mode; through the arranged detection assembly, whether the consumption degree of the mold ejector pin meets the specified requirement or not in the grinding process can be judged, after the specified requirement is met, the movable plate stretches out of the shrinkage groove to serve as a prompt, and the situation that next grinding is affected due to excessive grinding is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machine tools, and more specifically, to a numerical control machine tool for mold ejector pins capable of automatically loading and unloading materials. Background Art

[0002] The processing requirements for mold ejector pins are very strict to ensure their normal operation and service life in the mold. When processing mold ejector pins, a numerical control machine tool is needed to polish them to reduce the error value of the finished product size.

[0003] When using a numerical control machine tool to polish mold ejector pins, polishing blocks with various different friction coefficients are required to polish the mold ejector pins to ensure that the mold ejector pins can achieve a mirror effect. However, when each polishing material polishes the mold ejector pins, there will be a situation of excessive polishing, resulting in that the next polishing block with a different friction coefficient can only reduce the polishing amount during polishing. After reducing the polishing amount, the surface of the mold ejector pin cannot meet the specified requirements. If the specified requirements are to be met, the surface of the mold ejector pin will be consumed too much and the size will not match. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a numerical control machine tool for mold ejector pins capable of automatically loading and unloading materials.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A numerical control machine tool for mold ejector pins capable of automatically loading and unloading materials includes an electric workbench and a three-jaw chuck installed on the numerical control machine tool. The three-jaw chuck is used to clamp and fix the mold ejector pins. On one side of the electric workbench away from the three-jaw chuck, a support frame is slidably installed, and a fixed disk is fixedly installed on the support frame; A chute is opened at one end of the fixed disk close to the three-jaw chuck. A detection component is installed inside the chute. The detection component includes a moving block slidably installed inside the chute. A contraction groove is opened at one end of the moving block close to the three-jaw chuck, and a plurality of moving plates are slidably installed inside the contraction groove; A mechanical claw is installed on one side of the electric workbench. The mechanical claw is used to automatically place the mold ejector pins before processing into the processing position and take the processed mold ejector pins off from the position to be processed.

[0007] Further, the thicknesses of the plurality of moving plates decrease in sequence. One end of each moving plate is fixedly installed with a compression spring, and the other end of the compression spring is fixedly connected to the inner wall of the contraction groove. The compression spring is used to extrude the moving plate.

[0008] Further, a first electric telescopic rod is fixedly installed on the upper side inside the chute. The first electric telescopic rod is used to drive the moving block to move inside the chute.

[0009] Further, a switch is fixedly installed on one side of the moving plate, and the switch is in pressing contact with the inner wall of the contraction groove after the moving plate extends out of the contraction groove.

[0010] Further, the axis of the fixed disk and the axis of the three-jaw chuck are on the same axis, and a rotating block is rotatably connected to one end of the fixed disk close to the three-jaw chuck. An extrusion block is slidably installed inside the rotating block, and the extrusion block extrudes the end of the mold ejector pin. One end of the extrusion block is elastically connected to the inner wall of the rotating block through a first compression spring.

[0011] Further, a groove is opened at the lower end of each moving plate, and an extension rod is slidably installed inside the groove. A second compression spring is fixedly installed at one end of the extension rod located inside the groove. A pressure sensor is embedded inside the groove, and the extension rod presses the pressure sensor through the second compression spring.

[0012] Further, the end of the extension rod away from the second compression spring has a frustum-shaped structure, and the frustum part on the extension rod is in pressing contact with the end of the adjacent moving plate outside.

[0013] Further, a moving frame is slidably installed on one side of the upper end of the electric workbench. A stepping motor is installed inside the moving frame. An installation frame is sleeved on the output end of the stepping motor. A plurality of grinding blocks are embedded at one end of the installation frame away from the stepping motor. A second electric telescopic rod is arranged between the output end of the stepping motor and the inner wall of the installation frame. The second electric telescopic rod is used to push the installation frame to move. The switch close to the center of the fixed disk is used to control the contraction of the second electric telescopic rod, and the other switches are used to control the operation of the stepping motor.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Through the detection component provided in the present invention, it can judge whether the consumption degree of the mold ejector pin reaches the specified requirement during the grinding process. After reaching the specified requirement, the extension of the moving plate from the contraction groove can be used as a reminder to avoid excessive grinding, which affects the next grinding.

[0015] (2) Through the extension rod and the pressure sensor provided in the present invention, it can judge whether the mold ejector pin is deformed due to heating and the extrusion of the grinding block during the grinding process of the mold ejector pin, which can effectively ensure the quality of the mold ejector pin.

[0016] (3) Through the switch, the stepping motor and the second electric telescopic rod provided in the present invention, it can automatically replace the grinding block of the next level to contact the mold ejector pin during the grinding process and automatically separate the grinding block from the mold ejector pin after the grinding is completed. Description of the Drawings

[0017] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the chute part and the slider part of the present invention; Figure 3 Schematic diagram of the rotating block and the extrusion block part of the present invention; Figure 4 Schematic diagram of the moving plate and the extrusion spring part of the present invention; Figure 5 Schematic diagram of the extension rod part of the present invention; Figure 6 Schematic diagram of the stepper motor part of the present invention; Figure 7 Schematic diagram of the grinding block part of the present invention.

[0018] Description of the reference numerals in the figure: 1. Electric workbench; 101. Three-jaw chuck; 102. Support frame; 103. Moving frame; 104. Stepper motor; 105. Mounting frame; 106. Grinding block; 107. Second electric telescopic rod; 108. Mechanical claw; 2. Fixed disk; 201. Chute; 202. First electric telescopic rod; 203. Rotating block; 204. Extrusion block; 205. First compression spring; 3. Detection assembly; 301. Moving block; 302. Shrinkage groove; 303. Moving plate; 304. Extrusion spring; 305. Switch; 306. Groove; 307. Extension rod; 308. Second compression spring; 309. Pressure sensor. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 7, A numerical control machine tool for mold ejector pins capable of automatic loading and unloading, including an electric workbench 1 and a three-jaw chuck 101 installed on the numerical control machine tool. Multiple electric slide rails are provided on the electric workbench 1. The support frame 102 is controlled to move through the electric slide rails on the numerical control machine tool, or the support frame 102 is fixed to the workbench with bolts after being moved to a certain position. The three-jaw chuck 101 is installed on the machine body and is driven by a driving motor on the machine tool to rotate. The three-jaw chuck 101 is used to clamp and fix the mold ejector pins. A support frame 102 is slidably installed on one side of the upper end of the electric workbench 1 away from the three-jaw chuck 101. A fixed disk 2 is fixedly installed on the support frame 102. Among them, the grinding block can be replaced with a cutting tool head. When the mold ejector pin is cut to a certain extent, cutting tool heads of different sizes and specifications are automatically replaced to ensure that each cutting tool head only cuts a part of the mold ejector pin, reducing the error during cutting and making the size of the mold ejector pin more accurate after processing; A mechanical claw 108 is installed on one side of the electric workbench 1. The mechanical claw 108 is used to automatically place the mold ejector pin before processing into the processing position and remove the processed mold ejector pin from the position to be processed. The mechanical claw 108 is controlled by the control system on the numerical control machine tool; A chute 201 is provided at one end of the fixed disk 2 close to the three-jaw chuck 101. A detection component 3 is installed inside the chute 201. The detection component 3 includes a moving block 301 slidably installed inside the chute 201. A contraction groove 302 is provided at one end of the moving block 301 close to the three-jaw chuck 101. Multiple moving plates 303 are slidably installed inside the contraction groove 302; The thicknesses of the multiple moving plates 303 decrease in sequence. One end of the moving plate 303 is fixedly installed with a compression spring 304. The other end of the compression spring 304 is fixedly connected to the inner wall of the contraction groove 302. The compression spring 304 is used to squeeze the moving plate 303; A first electric telescopic rod 202 is fixedly installed on the upper side inside the chute 201. The first electric telescopic rod 202 is used to drive the moving block 301 to move inside the chute 201.

[0021] By adopting the above technical solution, when machining the mold ejector pin, the mold ejector pin is fixed on the three-jaw chuck 101, and then the first electric telescopic rod 202 is controlled to drive the moving block 301 to move. According to the grinding requirements, it moves a certain distance, so that a moving plate 303 close to the center of the mold ejector pin moves to the edge position of the ground mold ejector pin. After that, the other end is aligned with the fixed disk 2, and the fixed disk 2 and the moving block 301 can fix the other end of the mold ejector pin after moving. Then, controlling the rotation of the three-jaw chuck 101 can drive the mold ejector pin to rotate. When the mold ejector pin rotates, the staff grinds it. Among them, when the mold ejector pin is gradually ground and thinned, its diameter will gradually decrease. When the diameter of the mold ejector pin decreases, the end of the mold ejector pin no longer blocks the moving plate 303. At this time, under the action of the compression spring 304, the moving plate 303 can extend out of the contraction groove 302, and the extended moving plate 303 can be located outside the circumferential surface of the mold ejector pin. After each moving plate 303 extends out, a grinding material with another thickness is switched to grind the mold ejector pin.

[0022] A switch 305 is fixedly installed on one side of the moving plate 303. The switch 305 is in pressing contact with the inner wall of the contraction groove 302 after the moving plate 303 extends out of the contraction groove 302. The axis of the fixed disk 2 and the axis of the three-jaw chuck 101 are on the same axis, and a rotating block 203 is rotatably connected to one end of the fixed disk 2 close to the three-jaw chuck 101. An extrusion block 204 is slidably installed inside the rotating block 203. The extrusion block 204 extrudes the end of the mold ejector pin. One end of the extrusion block 204 is elastically connected to the inner wall of the rotating block 203 through a first compression spring 205. After the fixed disk 2 moves relative to the three-jaw chuck 101, the end of the extrusion block 204 can be in pressing contact with the end of the mold ejector pin. When the mold ejector pin rotates, it can drive the extrusion block 204 to rotate through friction, thereby driving the rotating block 203 to rotate. Therefore, the mold ejector pin can rotate relative to the fixed disk 2 when rotating; A moving frame 103 is slidably installed on one side of the upper end of the electric workbench 1. A stepping motor 104 is installed inside the moving frame 103. The output end of the stepping motor 104 is sleeved with a mounting frame 105. A plurality of grinding blocks 106 are embedded at one end of the mounting frame 105 away from the stepping motor 104. A second electric telescopic rod 107 is provided between the output end of the stepping motor 104 and the inner wall of the mounting frame 105. The second electric telescopic rod 107 is used to push the mounting frame 105 to move. The switch 305 close to the center of the fixed disk 2 is used to control the contraction of the second electric telescopic rod 107, and the other switches 305 are used to control the operation of the stepping motor 104.

[0023] By adopting the above technical solution, whenever a moving plate 303 extends out of the contraction groove 302, the switch 305 on the corresponding moving plate 303 can be in extrusion contact with the inner wall of the contraction groove 302 as the moving plate 303 moves. At this time, the switch 305 can control the stepping motor 104 to rotate by a certain angle when being extruded. After the stepping motor 104 rotates, it can drive the mounting bracket 105 to rotate. After the mounting bracket 105 rotates, it can drive the grinding block 106 fixedly connected thereto to rotate, so that different grinding blocks 106 are corresponding to the positions of the die ejector pins. Among them, the second electric telescopic rod 107 can extrude the mounting bracket 105 during the grinding process, so that the grinding block 106 on the mounting bracket 105 fits against the outer wall of the die ejector pin, thus facilitating grinding. Among them, when the last switch 305 is in extrusion contact with the inner wall of the contraction groove 302, the second electric telescopic rod 107 is controlled to contract, so that the mounting bracket 105 moves and the grinding block 106 is separated from the outer wall of the die ejector pin.

[0024] A groove 306 is formed at the lower end of each moving plate 303. An extension rod 307 is slidably installed inside the groove 306. A second compression spring 308 is fixedly installed at one end of the extension rod 307 located inside the groove 306. A pressure sensor 309 is embedded inside the groove 306. The extension rod 307 squeezes the pressure sensor 309 through the second compression spring 308. One end of the extension rod 307 away from the second compression spring 308 has a frustum-shaped structure, and the frustum part on the extension rod 307 is in extrusion contact with the end of the adjacent moving plate 303.

[0025] By adopting the above technical solution, when the moving plate 303 extends out of the contraction groove 302, the end of the extension rod 307 can fit against the outer wall of the die ejector pin. At this time, as the die ejector pin is gradually ground, the two extension rods 307 on the same moving plate 303 will gradually move relative to the groove 306. At this time, the pressure of the second compression spring 308 on the pressure sensor 309 will change. When the pressure difference between the two pressure sensors 309 on the same moving plate 303 is too large, it means that the die ejector pin is deformed during the grinding process and does not meet the production standard. If the pressure difference between the two pressure sensors 309 on the same moving plate 303 is within the allowable error range, it means that the die ejector pin has not undergone obvious deformation and is within the production standard, being a qualified product.

[0026] Usage method: When machining the mold ejector pin, place the mold ejector pin on the three-jaw chuck 101 for fixation, then control the first electric telescopic rod 202 to drive the moving block 301 to move, and move the moving plate 303 to the specified position. After that, align the other end with the fixed disk 2 and squeeze the multiple moving plates 303 so that the moving plates 303 contract into the contraction groove 302. Then, control the three-jaw chuck 101 to rotate, which can drive the mold ejector pin to rotate. When the mold ejector pin rotates, control the second electric telescopic rod 107 to move the mounting frame 105, so that the grinding head contacts the mold ejector pin and grinds the outer wall of the mold ejector pin. Among them, when the mold ejector pin is gradually ground thinner, its diameter will gradually decrease. When the diameter of the mold ejector pin decreases, the end of the mold ejector pin no longer blocks the moving plate 303. At this time, under the action of the compression spring 304, the moving plate 303 can extend out of the contraction groove 302. After extending out, the moving plate 303 can be located outside the circumferential surface of the mold ejector pin. Whenever a moving plate 303 extends out of the contraction groove 302, the switch 305 on the corresponding moving plate 303 can be in contact with the inner wall of the contraction groove 302 due to the movement of the moving plate 303. At this time, the switch 305 can control the stepping motor 104 to rotate a certain angle when being squeezed. After the stepping motor 104 rotates, it can drive the mounting frame 105 to rotate. After the mounting frame 105 rotates, it can drive the grinding block 106 fixedly connected to it to rotate, so that different grinding blocks 106 correspond to the position of the mold ejector pin. Among them, the second electric telescopic rod 107 can squeeze the mounting frame 105 during the grinding process, so that the grinding block 106 on the mounting frame 105 fits the outer wall of the mold ejector pin, which is convenient for grinding. Among them, when the last switch 305 is in contact with the inner wall of the contraction groove 302 after being squeezed, control the second electric telescopic rod 107 to contract, so that the mounting frame 105 moves, and the grinding block 106 is separated from the outer wall of the mold ejector pin.

[0027] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A mold ejector CNC machine tool capable of automatically loading and unloading, comprising an electric workbench (1) and a three-jaw chuck (101) installed on the CNC machine tool, characterized in that: The three-jaw chuck (101) is used to clamp and fix the mold ejector pin. A support frame (102) is slidably installed on one side of the upper end of the electric workbench (1) away from the three-jaw chuck (101), and a fixed disk (2) is fixedly installed on the support frame (102). A chute (201) is opened at one end of the fixed disk (2) close to the three-jaw chuck (101). A detection component (3) is installed inside the chute (201). The detection component (3) includes a moving block (301) slidably installed inside the chute (201). A contraction groove (302) is opened at one end of the moving block (301) close to the three-jaw chuck (101), and a plurality of moving plates (303) are slidably installed inside the contraction groove (302). A mechanical claw (108) is installed on one side of the electric workbench (1). The mechanical claw (108) is used to automatically place the mold ejector pin before processing into the processing position and remove the processed mold ejector pin from the position to be processed.

2. The numerical control machine tool for mold ejector pins capable of automatic loading and unloading according to claim 1, characterized in that: The thicknesses of the plurality of moving plates (303) decrease in sequence. One end of the moving plate (303) is fixedly installed with a compression spring (304), and the other end of the compression spring (304) is fixedly connected to the inner wall of the contraction groove (302). The compression spring (304) is used to extrude the moving plate (303).

3. The numerically controlled machine tool for mold ejector pins capable of automatic loading and unloading according to claim 2, characterized in that: A first electric telescopic rod (202) is fixedly installed on the upper side inside the chute (201). The first electric telescopic rod (202) is used to drive the moving block (301) to move inside the chute (201).

4. The numerically controlled machine tool for mold ejector pins capable of automatic loading and unloading according to claim 3, characterized in that: A switch (305) is fixedly installed on one side of the moving plate (303). The switch (305) is in pressing contact with the inner wall of the contraction groove (302) after the moving plate (303) extends out of the contraction groove (302).

5. A mold ejector numerical control machine tool capable of automatically loading and unloading, as claimed in claim 4, wherein: The axis of the fixed disk (2) and the axis of the three-jaw chuck (101) are located on the same axis. A rotating block (203) is rotatably connected to one end of the fixed disk (2) close to the three-jaw chuck (101). An extrusion block (204) is slidably installed inside the rotating block (203). The extrusion block (204) extrudes the end of the mold ejector pin. One end of the extrusion block (204) is elastically connected to the inner wall of the rotating block (203) through a first compression spring (205).

6. The numerically controlled machine tool for mold ejector pins capable of automatic loading and unloading according to claim 5, characterized in that: A groove (306) is opened at the lower end of each moving plate (303). A protruding rod (307) is slidably installed inside the groove (306). A second compression spring (308) is fixedly installed at one end of the protruding rod (307) located inside the groove (306). A pressure sensor (309) is embedded inside the groove (306). The protruding rod (307) extrudes the pressure sensor (309) through the second compression spring (308).

7. A mold ejector numerical control machine tool capable of automatically loading and unloading, as described in claim 6, characterized in that: The end of the protruding rod (307) away from the second compression spring (308) has a frustum-shaped structure, and the frustum part on the protruding rod (307) is in pressing contact with the end of the adjacent moving plate (303).

8. A mold ejector numerical control machine tool capable of automatically loading and unloading, as claimed in claim 7, wherein: A movable frame (103) is slidably mounted on one side of the upper end of the electric workbench (1). A stepping motor (104) is installed inside the movable frame (103). An installation frame (105) is sleeved on the output end of the stepping motor (104). A plurality of grinding blocks (106) are embedded at one end of the installation frame (105) away from the stepping motor (104). A second electric telescopic rod (107) is provided between the output end of the stepping motor (104) and the inner wall of the installation frame (105). The second electric telescopic rod (107) is used to push the installation frame (105) to move. A switch (305) near the center of the fixed disk (2) is used to control the contraction of the second electric telescopic rod (107), and the other switches (305) are used to control the operation of the stepping motor (104).

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