A CNC machine tool for mold ejectors capable of automatic loading and unloading

Abstract

The present invention discloses a CNC machine tool for a mold ejector capable of automatically loading and unloading materials, which belongs to the technical field of CNC machine tools. It comprises an electric workbench and a three-jaw chuck installed on the CNC machine tool. The three-jaw chuck is used to clamp and fix the mold ejector. A support frame is slidably installed on the side of the upper end of the electric workbench away from the three-jaw chuck, and a fixed plate is fixedly installed on the support frame. A slide groove is provided on one end of the fixed plate close to the three-jaw chuck, and a detection component is installed inside the slide groove. The detection component comprises a moving block slidably installed inside the slide groove, and a shrinkage groove is provided on one end of the moving block close to the three-jaw chuck. A plurality of moving plates are slidably installed inside the shrinkage groove. The present invention can judge whether the consumption degree of the mold ejector meets the specified requirement during the grinding process through the detection component set up. After the specified requirement is met, the moving plate extends out of the shrinkage groove to serve as a reminder, so as to avoid excessive grinding affecting the next grinding.

Description

Technical Field

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

[0002] The processing requirements for mold ejectors are very strict to ensure their normal operation and service life in the mold. During processing, mold ejectors need to be polished using CNC machine tools to reduce the error value of the finished product size.

[0003] When using CNC machine tools to grind mold ejectors, multiple grinding blocks with different friction coefficients are required to grind the mold ejectors to ensure that the mold ejectors can achieve a mirror effect. However, when each grinding material is used to grind the mold ejector, excessive grinding will occur, resulting in the grinding block with the next friction coefficient having to reduce the grinding amount during grinding. After reducing the grinding amount, the mold ejector surface will not meet the specified requirements. If the specified requirements are to be met, the mold ejector surface will be consumed too much and the size will not match. Summary of the Invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a CNC machine tool for a mold ejector that can automatically load and unload materials.

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

[0006] A CNC machine tool for a mold ejector capable of automatic loading and unloading comprises an electric workbench and a three-jaw chuck mounted on the CNC machine tool, the three-jaw chuck being used to clamp and fix the mold ejector, a support frame being slidably mounted on a side of the upper end of the electric workbench away from the three-jaw chuck, and a fixed plate being fixedly mounted on the support frame;

[0007] A sliding groove is provided at one end of the fixed plate close to the three-jaw chuck, a detection assembly is installed inside the sliding groove, and the detection assembly includes a moving block slidably installed inside the sliding groove, and a contraction groove is provided 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;

[0008] A mechanical claw is installed on one side of the electric workbench, and the mechanical claw is used to automatically place the mold ejector before processing into the processing position and remove the mold ejector after processing from the position to be processed.

[0009] Furthermore, the thickness of the plurality of movable plates decreases in sequence, an extrusion spring is fixedly mounted on one end of the movable plate, and the other end of the extrusion spring is fixedly connected to the inner wall of the contraction groove, and the extrusion spring is used to compress the movable plate.

[0010] Furthermore, a first electric telescopic rod is fixedly installed on the upper side of the inner part of the slide groove, and the first electric telescopic rod is used to drive the moving block to move in the slide groove.

[0011] Furthermore, a switch is fixedly mounted on one side of the movable plate, and the switch is pressed into contact with the inner wall of the contraction groove after the movable plate extends out of the contraction groove.

[0012] Furthermore, the axis of the fixed disk and the axis of the three-jaw chuck are located on the same axis, and the end of the fixed disk close to the three-jaw chuck is rotatably connected to a rotating block, and an extrusion block is slidably installed inside the rotating block. The extrusion block extrude the end of the mold ejector pin, and one end of the extrusion block is elastically connected to the inner wall of the rotating block through a first compression spring.

[0013] Furthermore, each movable plate has a groove at the lower end, 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 in the groove, and the extension rod squeezes the pressure sensor through the second compression spring.

[0014] Furthermore, the end of the extending rod away from the second compression spring has a truncated cone structure, and the outer portion of the truncated cone portion on the extending rod is in compression contact with the end portion of the adjacent movable plate.

[0015] Furthermore, a movable frame is slidably installed on one side of the upper end of the electric workbench, a stepper motor is installed inside the movable frame, a mounting frame is provided on the output end of the stepper motor, a plurality of grinding blocks are embedded in the end of the mounting frame away from the stepper motor, a second electric telescopic rod is provided between the output end of the stepper motor and the inner wall of the mounting frame, the second electric telescopic rod is used to push the mounting frame to move, a switch near the center of the fixed disk is used to control the retraction of the second electric telescopic rod, and the other switches are used to control the operation of the stepper motor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention can determine whether the consumption of the mold ejector pins has reached the specified requirements during the grinding process by setting up a detection component. After the specified requirements are reached, the movable plate extends from the shrinkage groove to serve as a reminder, thereby avoiding excessive grinding that affects the next grinding.

[0018] (2) The present invention can determine whether the mold ejector pin is deformed due to heat and extrusion of the grinding block during the grinding process by providing an extension rod in conjunction with a pressure sensor, thereby effectively ensuring the quality of the mold ejector pin.

[0019] (3) The present invention can automatically replace the next level of grinding block with the mold ejector pin during the grinding process by setting a switch in conjunction with the stepping motor and the second electric telescopic rod, and automatically separate the grinding block from the mold ejector pin after the grinding is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the chute part and the slider part of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the rotating block and the extruding block of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the movable plate and the extrusion spring of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the extension rod portion of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the stepping motor of the present invention;

[0026] Figure 7 It is a partial structural schematic diagram of the grinding block of the present invention.

[0027] Description of the numbers in the figure:

[0028] 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;

[0029] 2. Fixed plate; 201. Slide; 202. First electric telescopic rod; 203. Rotating block; 204. Extrusion block; 205. First compression spring;

[0030] 3. Detection assembly; 301. Moving block; 302. Contraction groove; 303. Moving plate; 304. Extrusion spring; 305. Switch; 306. Groove; 307. Extension rod; 308. Second compression spring; 309. Pressure sensor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 7 The chuck 102 is moved to a certain position by the electric slide rails on the CNC machine tool, and the support frame 102 is fixed to the workbench by bolts. The three-jaw chuck 101 is installed on the machine tool body, and the three-jaw chuck 101 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 pin. The upper end of the electric workbench 1 is slidably mounted with a support frame 102 on the side away from the three-jaw chuck 101, and a fixed plate 2 is fixedly mounted on the support frame 102. The grinding block can be replaced with a cutting head. When the mold ejector pin is cut to a certain extent, the cutting heads of different sizes and specifications are automatically replaced to ensure that each cutting head only cuts a part of the mold ejector pin, thereby reducing the error during cutting and making the size of the mold ejector pin more accurate after processing.

[0033] 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 before processing into the processing position and remove the mold ejector after processing from the position to be processed. The mechanical claw 108 is controlled by the control system on the CNC machine tool;

[0034] A sliding groove 201 is formed on one end of the fixed plate 2 near the three-jaw chuck 101, and a detection assembly 3 is installed inside the sliding groove 201. The detection assembly 3 includes a moving block 301 slidably installed inside the sliding groove 201. A contraction groove 302 is formed on one end of the moving block 301 near the three-jaw chuck 101, and a plurality of moving plates 303 are slidably installed inside the contraction groove 302.

[0035] The thickness of the plurality of movable plates 303 decreases in sequence. An extrusion spring 304 is fixedly mounted on one end of the movable plate 303. The other end of the extrusion spring 304 is fixedly connected to the inner wall of the contraction groove 302. The extrusion spring 304 is used to squeeze the movable plate 303.

[0036] A first electric telescopic rod 202 is fixedly installed on the upper side of the inner portion of the slide groove 201 . The first electric telescopic rod 202 is used to drive the moving block 301 to move in the slide groove 201 .

[0037] By adopting the above technical solution, when processing the mold ejector, the mold ejector is placed on the three-jaw chuck 101 for fixing, and then the first electric telescopic rod 202 is controlled to drive the moving block 301 to move, and a certain distance is moved according to the grinding requirements, so that a moving plate 303 close to the center of the mold ejector moves to the edge position of the mold ejector after grinding, and then the other end is aligned with the fixed disk 2. After the fixed disk 2 and the moving block 301 move, the other end of the mold ejector can be fixed. After that, the three-jaw chuck 101 is controlled to rotate to drive the mold The ejector pin rotates, and the staff polishes the mold ejector pin as it rotates. When the mold ejector pin is polished and becomes thinner, its diameter will gradually decrease. When the diameter of the mold ejector pin is reduced, the end of the mold ejector pin no longer blocks the movable plate 303. At this time, under the action of the extrusion spring 304, the movable plate 303 can be extended from the contraction groove 302. The extended movable plate 303 can be located outside the circumferential surface of the mold ejector pin. After each movable plate 303 is extended, another coarseness of the polishing material is switched to polish the mold ejector pin.

[0038] A switch 305 is fixedly installed on one side of the movable plate 303. After the movable plate 303 extends out of the shrinkage groove 302, the switch 305 is squeezed and contacted with the inner wall of the shrinkage groove 302. The axis of the fixed disk 2 and the axis of the three-jaw chuck 101 are located on the same axis, and the end of the fixed disk 2 close to the three-jaw chuck 101 is rotatably connected to the rotating block 203. An extrusion block 204 is slidably installed inside the rotating block 203. The extrusion block 204 squeezes 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 squeezed and contacted with the end of the mold ejector pin. When the mold ejector pin rotates, the extrusion block 204 can be driven to rotate by friction, thereby driving the rotating block 203 to rotate. Therefore, the mold ejector pin can rotate relative to the fixed disk 2 when it rotates;

[0039] A movable frame 103 is slidably installed on one side of the upper end of the electric workbench 1, and a stepping motor 104 is installed inside the movable frame 103. A mounting frame 105 is sleeved on the output end of the stepping motor 104, and a plurality of grinding blocks 106 are embedded in the 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 near the center of the fixed disk 2 is used to control the retraction of the second electric telescopic rod 107, and the other switches 305 are used to control the operation of the stepping motor 104.

[0040] By adopting the above technical solution, whenever a movable plate 303 extends from the contraction groove 302, the switch 305 on the corresponding movable plate 303 can be squeezed and contacted with the inner wall of the contraction groove 302 as the movable plate 303 moves. At this time, the switch 305 is squeezed and can control the stepper motor 104 to rotate a certain angle. After the stepper 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 thereto to rotate, so that different grinding blocks 106 correspond to the positions of the mold ejector pins. 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 against the outer wall of the mold ejector pin, thereby facilitating grinding. When the last switch 305 is squeezed and contacted with the inner wall of the contraction groove 302, the second electric telescopic rod 107 is controlled to contract, thereby causing the mounting frame 105 to move, so that the grinding block 106 is separated from the outer wall of the mold ejector pin.

[0041] A groove 306 is formed at the lower end of each movable plate 303. A protruding rod 307 is slidably mounted inside the groove 306. A second compression spring 308 is fixedly mounted on one end of the protruding rod 307 located inside the groove 306. A pressure sensor 309 is embedded in the groove 306. The protruding rod 307 presses the pressure sensor 309 through the second compression spring 308.

[0042] One end of the extending rod 307 away from the second compression spring 308 is in a truncated cone structure, and the outer portion of the truncated cone portion of the extending rod 307 is in press contact with the end of the adjacent moving plate 303 .

[0043] By adopting the above technical solution, after the movable plate 303 extends from the shrinkage groove 302, the end of the extending rod 307 can fit against the outer wall of the mold ejector pin. At this time, as the mold ejector pin is gradually polished, the two extending rods 307 on the same movable 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 movable plate 303 is too large, it means that the mold ejector pin has been deformed during the polishing process and does not meet the production standards. If the pressure difference between the two pressure sensors 309 on the same movable plate 303 is within the allowable error range, it means that the mold ejector pin has not been significantly deformed, is within the production standard, and is a qualified product.

[0044] When the mold ejector pin is to be processed, the mold ejector pin is placed on the three-jaw chuck 101 for fixing, and the first electric telescopic rod 202 is controlled to drive the moving block 301 to move, and the moving plate 303 is moved to the specified position. After that, the other end is aligned with the fixed plate 2 and multiple moving plates 303 are squeezed to make the moving plate 303 retract into the shrinkage groove 302, and then the three-jaw chuck 101 is controlled to rotate to drive the mold ejector pin to rotate. When the mold ejector pin rotates, the second electric telescopic rod 107 is controlled to move the mounting bracket 105, so that the grinding head comes into contact with the mold ejector pin to grind the outer wall of the mold ejector pin. When the mold ejector pin is gradually polished and becomes thinner, its diameter will gradually decrease. When the diameter of the mold ejector pin is reduced, the end of the mold ejector pin no longer blocks the moving plate 303. At this time, under the action of the extrusion spring 304, the moving plate 303 can be extended from the shrinkage groove 302, and the extended moving plate 303 can be located in the mold On the outer side of the circumferential surface of the ejector, whenever a movable plate 303 extends from the contraction groove 302, the switch 305 on the corresponding movable plate 303 can be squeezed and contacted with the inner wall of the contraction groove 302 as the movable plate 303 moves. At this time, the switch 305 is squeezed and can control the stepping motor 104 to rotate a certain angle. 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 thereto to rotate, so that different grinding blocks 106 correspond to the positions of the mold ejector. 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 against the outer wall of the mold ejector, thereby facilitating grinding. Among them, when the last switch 305 is squeezed and contacted with the inner wall of the contraction groove 302, the second electric telescopic rod 107 is controlled to be retracted, thereby causing the mounting frame 105 to move, so that the grinding block 106 is separated from the outer wall of the mold ejector.

[0045] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

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

2. The CNC machine tool for a mold ejector capable of automatic loading and unloading according to claim 1, characterized in that: The thickness of the plurality of movable plates (303) decreases in sequence. A compression spring (304) is fixedly mounted on one end of the movable plate (303). 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 compress the movable plate (303).

3. The CNC machine tool for a mold ejector 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 of the interior of the slide groove (201), and the first electric telescopic rod (202) is used to drive the moving block (301) to move in the slide groove (201).

4. The CNC machine tool for a mold ejector capable of automatic loading and unloading according to claim 3, characterized in that: A switch (305) is fixedly mounted on one side of the movable plate (303), and the switch (305) is in compression contact with the inner wall of the contraction groove (302) after the movable plate (303) extends from the contraction groove (302).

5. The CNC machine tool for a mold ejector capable of automatic loading and unloading according to claim 4, characterized in that: The axis of the fixed disk (2) and the axis of the three-jaw chuck (101) are located on the same axis, and one end of the fixed disk (2) close to the three-jaw chuck (101) is rotatably connected to a rotating block (203), and an extrusion block (204) is slidably installed inside the rotating block (203). The extrusion block (204) extrude the end of the mold ejector pin, and one end of the extrusion block (204) is elastically connected to the inner wall of the rotating block (203) via a first compression spring (205).

6. The CNC machine tool for a mold ejector capable of automatic loading and unloading according to claim 5, characterized in that: A groove (306) is provided at the lower end of each movable plate (303), a protruding rod (307) is slidably mounted inside the groove (306), a second compression spring (308) is fixedly mounted on one end of the protruding rod (307) located inside the groove (306), a pressure sensor (309) is embedded inside the groove (306), and the protruding rod (307) presses the pressure sensor (309) through the second compression spring (308).

7. The CNC machine tool for a mold ejector capable of automatic loading and unloading according to claim 6, characterized in that: The end of the extending rod (307) away from the second compression spring (308) is in a truncated cone structure, and the outer portion of the truncated cone portion on the extending rod (307) is in compression contact with the end of the adjacent movable plate (303).

8. The CNC machine tool for a mold ejector capable of automatic loading and unloading according to claim 7, characterized in that: A movable frame (103) is slidably mounted on one side of the upper end of the electric workbench (1), a stepper motor (104) is mounted inside the movable frame (103), an output end of the stepper motor (104) is sleeved with a mounting frame (105), an end of the mounting frame (105) away from the stepper motor (104) is embedded with a plurality of grinding blocks (106), a second electric telescopic rod (107) is provided between the output end of the stepper 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, a switch (305) near the center of the fixed plate (2) is used to control the retraction of the second electric telescopic rod (107), and the other switches (305) are used to control the operation of the stepper motor (104).

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