Split type plastic mold

Abstract

The utility model discloses a split type plastic mould which comprises a base, wherein a workbench is arranged at the upper end of the base; the mounting frames are arranged at the four corners of the upper end of the base, the mounting frames are fixedly connected with the base, servo motors are fixedly arranged at the lower ends of the interiors of the mounting frames, and output shafts of the servo motors extend to the middle positions of the interiors of the mounting frames; and a connecting base is arranged outside the position, located in the middle of the interior of the mounting frame, of an output shaft of the servo motor, and a lead screw is fixedly arranged at the end, located in the connecting base, of the output shaft of the servo motor. The problems that plastic part forming is inaccurate, size deviation occurs, the surface is rough and distorted, a movable mold is not flexible to disassemble, the movable mold is generally fixedly installed, when the movable mold needs to be replaced, the whole structure needs to be disassembled, then the movable mold needs to be replaced, and the mold precision is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a split type plastic mold. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes. Among them, the split plastic mold is a common type of mold, mainly used in the production of plastic products. Its basic feature is that the mold can be split into two or more parts, which is convenient for removing plastic parts and cleaning and repairing the mold. The split plastic mold is mainly composed of two parts: the movable mold and the fixed mold. The movable mold refers to the movable part, while the fixed mold is the fixed part.

[0003] For example, the Chinese patent "A Split Plastic Mold" with announcement number CN216658634U includes a base plate and a lifting unit. The middle part of the upper surface of the base plate is fixedly connected to half mold one, the upper surface of the base plate is located in the middle of the front and rear sides of half mold one to install a defoaming unit, the four corners of the lower surface of the base plate are respectively fixedly connected to the legs, and the lower end surface of each leg is provided with anti-slip grooves. The lifting unit includes a mounting plate, a screw, a support plate, a motor one and a mold assembly. The upper surface of the base plate is located on the left side of half mold one and is fixedly connected to the mounting plate. The middle part of the upper surface of the mounting plate is rotatably connected to the lower end of the screw through a bearing, the upper end of the screw is rotatably connected to the left part of the lower surface of the support plate through a bearing, and the left part of the side surface of the support plate is fixedly connected to motor one.

[0004] Although the above-mentioned prior art can realize the production of products through a split mold, in actual use, on the one hand, the movement of the movable mold is usually not fine enough, and the movable mold is prone to position deviation during the movement of the movable mold driven by the motor, resulting in inaccurate molding of plastic parts, dimensional deviation, surface roughness, distortion and other problems, thereby reducing the yield rate of the product; on the other hand, the disassembly of the movable mold is not flexible enough. The movable mold is generally fixedly installed. When the movable mold needs to be replaced, the entire structure needs to be dismantled and then the movable mold is replaced, resulting in a decrease in the accuracy of the movable mold, thereby shortening the service life of the movable mold. Therefore, it does not meet the existing needs. In this regard, we propose a split plastic mold. Utility Model Content

[0005] The purpose of the utility model is to provide a split plastic mold to solve the problems raised in the above-mentioned background technology, that the movable mold usually moves not finely enough, and the movable mold is prone to position deviation during the movement of the movable mold driven by the motor, resulting in inaccurate molding of plastic parts, dimensional deviation, rough surface, distortion, and insufficient flexibility in disassembly of the movable mold. The movable mold is generally fixedly installed, and when the movable mold needs to be replaced, the entire structure needs to be dismantled and then the movable mold is replaced, resulting in reduced mold accuracy.

[0006] To achieve the above object, the utility model provides the following technical solution: a split plastic mold, comprising a base, a workbench is provided at the upper end of the base, and the workbench is fixedly connected to the base; and further comprising:

[0007] A mounting frame is arranged at the four corners of the upper end of the base, and the mounting frame is fixedly connected to the base, a servo motor is fixedly arranged at the lower end inside the mounting frame, and the output shaft of the servo motor extends to the middle position inside the mounting frame, a connecting seat is arranged outside the output shaft of the servo motor located at the middle position inside the mounting frame, a screw rod is fixedly arranged at one end of the servo motor output shaft located inside the connecting seat, and one end of the screw rod extends to the upper end position inside the mounting frame.

[0008] Preferably, a movable platform is provided on the outside of the screw rod, slide grooves are provided on both sides of the movable platform, a slider is provided inside the slide groove, a rotating cavity is provided at the middle position inside the slider, a fixed hook is provided inside the rotating cavity, the fixed hook is rotatably connected to the inner wall of the rotating cavity, and one end of the fixed hook extends to the bottom of the movable platform, a torsion spring is provided between the fixed hook and the inner wall of the rotating cavity, and the two ends of the torsion spring are respectively fixedly connected to the fixed hook and the inner wall of the rotating cavity.

[0009] Preferably, four fixed plates are fixedly provided on the upper end of the workbench, and the fixed plates are equidistantly distributed in a ring shape, a telescopic rod is provided at the middle position of one side of the fixed plate, and the telescopic rod is fixedly connected to the fixed plate, an extrusion block is provided at one end of the telescopic rod, springs are fixedly provided at the upper and lower ends of one side of the extrusion block, and the other end of the spring is fixedly connected to the fixed plate.

[0010] Preferably, a drive motor is provided at the front and rear ends of the slider, and the output shaft of the drive motor extends to the outside of the slider. A pulley is fixedly provided outside the output shaft of the drive motor outside the slider, and the pulley is slidably matched with the slide groove.

[0011] Preferably, a rubber gasket is provided on the other side of the extrusion block, and the rubber gasket is fixedly connected to the extrusion block.

[0012] Preferably, a movable mold is disposed at the lower end of the movable platform, and fixed blocks are fixedly disposed on both sides of the movable mold, and the fixed blocks are fixedly engaged with fixed hooks.

[0013] Preferably, a fixed mold is provided at the middle position of the upper end of the workbench.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can make the movable mold move accurately in the vertical direction through the movable table and the screw. When making plastic products, the servo motor is turned on, and the rotating servo motor output shaft drives the screw to rotate through the connecting seat. The outside of the screw has a thread. When the screw rotates, the thread on the screw will push the movable table to move up or down. When the movable table needs to move up, the servo motor is rotated in the forward direction, or when the movable table needs to move downward, the servo motor is rotated in the reverse direction to achieve accurate movement of the movable mold, prevent inaccurate molding of plastic parts, and prevent dimensional deviation, surface roughness, and distortion, thereby improving the yield rate of the product.

[0016] 2. The utility model can fix the block through the fixing hook, and the movable mold can be flexibly disassembled and assembled. When the movable mold needs to be disassembled and assembled, the driving motor is turned on, so that the output shaft of the driving motor drives the pulley to rotate in the slide groove, so that the slider moves in the horizontal direction, and the distance between the sliders is expanded. At this time, the fixing hook is separated from the fixing block, so that the movable mold is detached from the moving table, and the disassembly of the movable mold is completed. When the movable mold needs to be installed, the distance between the sliders is adjusted according to the size of the movable mold. After the position adjustment is completed, the fixing block of the movable mold is aligned with the fixing hook and the movable mold is pushed into the fixing hook. In the process, the fixing blocks at both ends of the movable mold squeeze the fixing hook, so that the torsion spring on the fixing hook is in a compressed state. After the fixing block is completely pushed into the fixing hook, the reset torsion spring pushes the fixing hook to clamp the fixed movable mold through the fixing block, thereby preventing the movable mold from being reduced in precision during the replacement of the movable mold, thereby extending the service life of the movable mold.

[0017] 3. The utility model can fix fixed molds of different sizes through the telescopic rod and the spring. After the movable mold is replaced, the fixed mold that matches the movable mold can be replaced. When the fixed mold is replaced, the telescopic rod is squeezed to shrink the telescopic end of the telescopic rod, expand the distance between the telescopic rods, take the fixed mold out from between the telescopic rods, and then put the fixed mold that matches the movable mold between the telescopic rods. At the same time, the fixed mold squeezes the telescopic rod so that the telescopic rod squeezes and fixes the fixed mold. At this time, the spring is in a compressed state, and the force of the spring reset pushes the extrusion block to contact and fix the fixed mold, thereby improving the adaptability of the device to molds of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the internal structure of the utility model;

[0019] Figure 2 It is a side view of the internal structure of the utility model;

[0020] Figure 3 For the utility model Figure 1 A partial enlarged view of the middle A area;

[0021] Figure 4 For the utility model Figure 2 A partial enlarged view of area B in the middle.

[0022] In the figure: 1. base; 2. workbench; 3. mounting frame; 4. servo motor; 5. connecting seat; 6. screw rod; 7. moving table; 8. slide groove; 9. slider; 10. fixing hook; 11. fixing block; 12. moving mold; 13. fixing plate; 14. telescopic rod; 15. spring; 16. extrusion block; 17. rubber gasket; 18. fixed mold; 19. pulley; 20. driving motor; 21. torsion spring; 22. rotating chamber. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4 The utility model provides an embodiment: a split plastic mold, including a base 1, a workbench 2 is provided at the upper end of the base 1, and the workbench 2 is fixedly connected to the base 1; and also includes:

[0025] The mounting frame 3 is arranged at the four corners of the upper end of the base 1, and the mounting frame 3 is fixedly connected to the base 1. A servo motor 4 is fixedly arranged at the lower end inside the mounting frame 3, and the output shaft of the servo motor 4 extends to the middle position inside the mounting frame 3. A connecting seat 5 is arranged outside the output shaft of the servo motor 4 located at the middle position inside the mounting frame 3. A screw rod 6 is fixedly arranged at one end of the output shaft of the servo motor 4 located inside the connecting seat 5, and one end of the screw rod 6 extends to the upper end position inside the mounting frame 3.

[0026] During use, when making plastic products, the servo motor 4 is turned on, and the rotating output shaft of the servo motor 4 drives the screw rod 6 to rotate through the connecting seat 5. The outside of the screw rod 6 has a thread. When the screw rod 6 rotates, the thread on the screw rod 6 will push the movable platform 7 to move up or down. When the movable platform 7 needs to move upward, the servo motor 4 is rotated forward, or when the movable platform 7 needs to move downward, the servo motor 4 is rotated reversely to achieve precise movement of the movable mold 12.

[0027] See also Figure 1 and Figure 3 A moving platform 7 is arranged outside the screw rod 6, and slide grooves 8 are arranged on both sides of the inside of the moving platform 7. A slider 9 is arranged inside the slide groove 8, and a rotating cavity 22 is arranged at the middle position inside the slider 9. A fixed hook 10 is arranged inside the rotating cavity 22, and the fixed hook 10 is rotatably connected to the inner wall of the rotating cavity 22, and one end of the fixed hook 10 extends to the bottom of the moving platform 7, and a torsion spring 21 is arranged between the fixed hook 10 and the inner wall of the rotating cavity 22, and the two ends of the torsion spring 21 are fixedly connected to the fixed hook 10 and the inner wall of the rotating cavity 22 respectively, so as to facilitate the installation of the movable mold 12.

[0028] See also Figure 1 and Figure 2 Four fixed plates 13 are fixedly provided at the upper end of the workbench 2, and the fixed plates 13 are equidistantly distributed in a ring shape, a telescopic rod 14 is provided at the middle position of one side of the fixed plate 13, and the telescopic rod 14 is fixedly connected to the fixed plate 13, an extrusion block 16 is provided at one end of the telescopic rod 14, and springs 15 are fixedly provided at the upper and lower ends of one side of the extrusion block 16, and the other end of the spring 15 is fixedly connected to the fixed plate 13, so as to facilitate the replacement of the fixed mold 18 corresponding to the movable mold 12.

[0029] See also Figure 1 A driving motor 20 is provided at the front and rear ends of the slider 9, and the output shaft of the driving motor 20 extends to the outside of the slider 9. A pulley 19 is fixedly provided outside the output shaft of the driving motor 20 outside the slider 9, and the pulley 19 is slidably matched with the slide groove 8, so as to adapt to movable molds 12 of different sizes.

[0030] See also Figure 1 A rubber gasket 17 is provided on the other side of the extrusion block 16 , and the rubber gasket 17 is fixedly connected to the extrusion block 16 to increase the friction between the extrusion block 16 and the fixed mold 18 .

[0031] See also Figure 1 A movable mold 12 is disposed at the lower end of the movable platform 7 , and fixed blocks 11 are fixedly disposed on both sides of the movable mold 12 , and the fixed blocks 11 are fixedly engaged with the fixed hooks 10 , so as to facilitate the disassembly and assembly of the movable mold 12 .

[0032] See also Figure 1 A fixed mold 18 is arranged at the middle position of the upper end of the workbench 2 to facilitate the installation of the fixed mold 18.

[0033] Working principle: When the movable mold 12 needs to be disassembled, the drive motor 20 is turned on, so that the output shaft of the drive motor 20 drives the pulley 19 to rotate in the slide groove 8, so that the sliders 9 move in the horizontal direction, and the distance between the sliders 9 is expanded. At this time, the fixed hook 10 is separated from the fixed block 11, so that the movable mold 12 is separated from the moving table 7, and the disassembly of the movable mold 12 is completed. When the movable mold 12 needs to be installed, the distance between the sliders 9 is adjusted according to the size of the movable mold 12. After the position adjustment is completed, the fixed block 11 of the movable mold 12 is aligned with the fixed hook 10 and the movable mold 12 is pushed into the fixed hook 10. In the process, the fixed blocks 11 at both ends of the movable mold 12 squeeze the fixed hook 10, so that the torsion spring 21 on the fixed hook 10 is in a compressed state. In this state, when the fixing block 11 is completely pushed into the fixing hook 10, the reset torsion spring 21 pushes the fixing hook 10 to clamp the fixed movable mold 12 through the fixing block 11. After the movable mold 12 is replaced, the fixed mold 18 matched with the movable mold 12 can be replaced. When the fixed mold 18 is replaced, the telescopic rod 14 is squeezed to shrink the telescopic end of the telescopic rod 14, expand the distance between the telescopic rods 14, take the fixed mold 18 out from between the telescopic rods 14, and then put the fixed mold 18 matched with the movable mold 12 between the telescopic rods 14. At the same time, the fixed mold 18 squeezes the telescopic rod 14 so that the telescopic rod 14 squeezes and fixes the fixed mold 18. At this time, the spring 15 is in a compressed state, and the reset force of the spring 15 pushes the squeezing block 16 to contact and fix the fixed mold 18.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A split plastic mold, comprising a base (1), a workbench (2) being arranged at the upper end of the base (1), and the workbench (2) being fixedly connected to the base (1); Features: Also includes: A mounting frame (3) is arranged at four corners of the upper end of the base (1), and the mounting frame (3) is fixedly connected to the base (1); a servo motor (4) is fixedly arranged at the lower end of the mounting frame (3), and the output shaft of the servo motor (4) extends to the middle position of the mounting frame (3); a connecting seat (5) is arranged outside the output shaft of the servo motor (4) located at the middle position of the mounting frame (3); a screw rod (6) is fixedly arranged at one end of the output shaft of the servo motor (4) located inside the connecting seat (5), and one end of the screw rod (6) extends to the upper end of the mounting frame (3), and the screw rod (6) is arranged outside A moving platform (7) is arranged, and slide grooves (8) are arranged on both sides of the moving platform (7), and a slider (9) is arranged inside the slide groove (8). A rotating cavity (22) is arranged at the middle position inside the slider (9), and a fixing hook (10) is arranged inside the rotating cavity (22). The fixing hook (10) is rotatably connected to the inner wall of the rotating cavity (22), and one end of the fixing hook (10) extends to the bottom of the moving platform (7). A torsion spring (21) is arranged between the fixing hook (10) and the inner wall of the rotating cavity (22), and the two ends of the torsion spring (21) are fixedly connected to the fixing hook (10) and the inner wall of the rotating cavity (22) respectively.

2. A split plastic mold according to claim 1, Features: Four fixed plates (13) are fixedly arranged at the upper end of the workbench (2), and the fixed plates (13) are equidistantly distributed in a ring shape. A telescopic rod (14) is arranged at the middle position of one side of the fixed plate (13), and the telescopic rod (14) is fixedly connected to the fixed plate (13). An extrusion block (16) is arranged at one end of the telescopic rod (14), and springs (15) are fixedly arranged at the upper and lower ends of one side of the extrusion block (16), and the other end of the spring (15) is fixedly connected to the fixed plate (13).

3. A split plastic mold according to claim 1, Features: A driving motor (20) is provided at the front and rear ends of the slider (9), and the output shaft of the driving motor (20) extends to the outside of the slider (9). A pulley (19) is fixedly provided outside the output shaft of the driving motor (20) outside the slider (9), and the pulley (19) is slidably matched with the slide groove (8).

4. A split plastic mold according to claim 2, Features: A rubber gasket (17) is provided on the other side of the extrusion block (16), and the rubber gasket (17) is fixedly connected to the extrusion block (16).

5. A split plastic mold according to claim 1, Features: A movable mold (12) is arranged at the lower end of the movable platform (7), and fixed blocks (11) are fixedly arranged on both sides of the movable mold (12), and the fixed blocks (11) are fixedly engaged with the fixed hooks (10).

6. A split plastic mold according to claim 1, Features: A fixed mold (18) is arranged at the middle position of the upper end of the workbench (2).

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