Rapid forming mold convenient to demold

Abstract

The invention discloses a rapid forming mold convenient to demold, which belongs to the technical field of injection molding, and comprises a fixed base, a material guide groove, a fixed frame, a guide rod, a hydraulic rod, a support frame, a material storage box, an injection molding frame, a feeding frame, a servo motor A, a spiral feeding rod, an electric heating pipe, an injection molding groove and a material extrusion groove, guide rods are fixedly installed at the four corners of the side of the fixing frame. After the sliding rod on the side of the demolding plate on the outer ring of the rotating column is extruded and contracted to a certain degree through the damping telescopic rod and the outer side spring, the damping telescopic rod and the outer side spring generate reverse thrust to push the sliding rod to slide on the inner side of the sliding groove, the demolding plate is driven to push an injection molding pipe fitting on the outer ring of the rotating column to slide off from the outer ring of the rotating column, and after demolding is conducted, demolding is completed. And the injection molding pipe fitting falls onto the surface of the material guide groove and falls into the material storage box along the material guide groove to be collected, and the effect that workers can conveniently conduct rapid demolding treatment on the injection molding pipe fitting subjected to injection molding is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to a rapid molding mold which is convenient for demoulding. Background Art

[0002] Injection molding is a method of injecting plastic liquid raw materials into the required molding mold groove, waiting for the plastic liquid raw materials to cool and dry, and then producing injection molded parts. Therefore, a rapid molding mold that is easy to demold is needed.

[0003] Among them, after searching, it was found that the application number is CN202123421477.1, an automatic demoulding device for plastic pipe fittings, which has a compression spring that uses elastic force to drive the moving plate to rise when the injection molding machine moves upward, so that the moving plate drives the vertical rod and the connecting rod to rise, and the rising connecting rod drives the ring to rise, so that the ring pushes the formed plastic pipe fitting out of the mold groove, which is convenient for demoulding; Among them, the shortcomings are as follows:

[0004] When the staff uses this kind of automatic demoulding device for plastic pipe fittings to perform injection molding production of plastic pipe fittings, the injection molding machine moves upward to drive the compression spring to use elastic force to drive the moving plate to rise, and drive the vertical rod and the connecting rod to rise, so that the circular ring can eject the formed plastic pipe fitting from the mold groove. During the period when the injection plastic part is squeezed into the mold groove to form the plastic pipe fitting, the injection plastic part will be in contact with the inner wall of the mold groove at a fixed position for a long time, which may easily cause the injection plastic part to adhere to the inner wall of the mold groove after drying, resulting in a slight change in the demoulding process. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid prototyping mold that is easy to demould in order to solve the problem that the demoulding process of the above-mentioned automatic demoulding device for plastic pipe fittings is slightly unchanged.

[0006] The technical solution adopted by the present invention is as follows: a rapid prototyping mold that is easy to demould, including a fixed base, a material guide trough, a fixed frame, a guide rod, a hydraulic rod, a support frame, a material storage box, an injection molding frame, a material feeding frame, a servo motor A, a spiral feeding rod, an electric heating pipe, an injection molding trough and an extrusion trough, a fixed frame is fixedly installed on the top of the fixed base, guide rods are fixedly installed on the four corners of the side of the fixed frame, hydraulic rods are relatively fixedly installed on the upper and lower sides of the fixed frame, a support frame is fixedly installed on the side of the end of the hydraulic rod, and the four corners of the support frame are slidably arranged on the outside of the guide rod through a slider, an injection molding frame is fixedly installed on the top of the fixed base near the side of the support frame, and an inlet is embedded on the top of the injection molding frame A material rack, wherein injection molding grooves are embedded on the sides of the injection molding rack near the four corners, an extrusion groove is embedded between the inner wall side of the injection molding groove and the inner wall side of the injection molding rack, a servo motor A is fixedly installed on the inner wall side of the injection molding rack, and the servo motor A is connected to a spiral feeding rod through an output shaft, an electric heating pipe is embedded on the inner wall of the injection molding rack, and the electric heating pipe is spirally arranged, a material guide groove is embedded above the fixed base near the bottom of the support frame, a material storage box is arranged below the fixed base near the bottom of the material guide groove, a rotating anti-sticking mechanism for preventing material adhesion is arranged inside the injection molding groove, and a sliding demolding mechanism for convenient demolding of injection molded pipe fittings is arranged on the side of the support frame.

[0007] Among them, the rotating anti-sticking mechanism is composed of a rotating rod A, a gear, a rotating frame, a copper plate, teeth, a rotating column, a servo motor B, a rotating rod B, a cooling water tank, a water pump and a water cooling pipe. The side of the support frame near the side of the injection molding groove is provided with a rotating column through a bearing for rotation. The side of the support frame near the upper and lower rotating columns is fixedly installed with a servo motor B. The servo motor B is connected to the rotating rod B through an output shaft, and the rotating rod B and the two opposite rotating columns are arranged through a chain transmission. The four corners of the inner wall of the support frame are provided with rotating rods A through bearings for rotation near the rotating columns. The outer ring of the rotating rod A is fixedly installed with a gear. The inner wall of the injection molding groove is connected with a sealing ring and A rotating frame is arranged for the bearing rotation, and the rotating frame is arranged in a ring shape, a copper plate is fixedly installed on the outer ring of the rotating frame, and teeth are fixedly installed on the inner ring of the rotating frame. There are several teeth, and they are arranged equidistantly in a trapezoidal shape, and there is a bite transmission arrangement between the several teeth and the teeth matching the outer ring of the gear. A cooling water tank is fixedly installed above the injection molding frame, and a water pump is embedded in the front of the cooling water tank. A water cooling pipe is embedded in the injection molding frame, and the water cooling pipe is spirally arranged on the inner walls of four injection molding grooves, and one end of the water cooling pipe is embedded on the side of the water pump, and the other end is embedded on the side of the cooling water tank. The outer surface material of the rotating frame and the rotating column is PVC.

[0008] Among them, the sliding demolding mechanism is composed of a slide groove, a sliding rod, a stripping plate and a damping telescopic rod. The four corners of the support frame are embedded with slide grooves near the rotating column. A sliding rod is slidably arranged on the inner side of the slide groove. A stripping plate is fixedly installed on the side of the sliding rod, and the stripping plate is slidably arranged on the outside of the rotating column. A damping telescopic rod is fixedly installed between the side of the sliding rod and the side of the fixed frame, and a spring is matched on the outside of the damping telescopic rod.

[0009] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0010] 1. This kind of rapid prototyping mold that is easy to demould is provided with a rotating anti-sticking mechanism, which allows the staff to coordinate the rotating rod A, gears, rotating frame, copper plate, teeth, rotating column, servo motor B, rotating rod B, cooling water tank, water pump and water cooling pipe. When the servo motor B drives the outer ring chain of the rotating rod B to drive the rotating column through the bearing transmission, the rotating frame is driven to rotate in the opposite direction of the rotating column through the chain and gears, so that the fluid injection molding material between the rotating frame and the rotating column that rotate in the opposite direction will not be in contact with the fixed position of the rotating frame and the rotating column for a long time during the gradual molding period to cause adhesion, which can avoid the adhesion and the inconvenient demoulding effect.

[0011] 2. This kind of rapid prototyping mold that is easy to demould is provided with a sliding demoulding mechanism, which allows the staff to cooperate between the slide groove, the sliding rod, the stripping plate and the damping telescopic rod. When the staff controls the hydraulic rod contraction support frame to slide on the outside of the guide rod through the slider, the sliding rod and the stripping plate will drive the damping telescopic rod and the outer spring to contract, so that the damping telescopic rod and the outer spring generate a reverse thrust on the sliding rod and the stripping plate, driving the sliding rod to push the stripping plate on the inner side of the slide groove to push out the injection molded pipe fittings of the outer ring of the rotating column, so as to facilitate the staff to perform rapid demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the injection molding machine of the present invention;

[0013] Figure 2 It is a schematic diagram of the front cross-sectional structure of the injection molding machine in the present invention;

[0014] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of the structure at A in the middle;

[0015] Figure 4 It is a schematic diagram of the side view structure of the rotating frame in the present invention;

[0016] Figure 5 It is a schematic diagram of the side cross-sectional structure of the support frame in the present invention;

[0017] Figure 6For the present invention Figure 5 The enlarged schematic diagram of the structure at A in the middle;

[0018] Figure 7 The figure is a schematic diagram of the front view three-dimensional structure of the stripping plate in the present invention.

[0019] Markings in the figure: 1. Fixed base; 101. Material guide trough; 102. Fixed frame; 103. Guide rod; 104. Hydraulic rod; 105. Support frame; 106. Rotating rod A; 107. Gear; 108. Slide; 2. Material storage box; 3. Injection molding frame; 301. Feeding rack; 302. Servo motor A; 303. Screw feeding rod; 304. Electric heating pipe; 305. Injection molding trough; 306. Extrusion trough; 4. Rotating frame; 401. Copper plate; 402. Teeth; 5. Rotating column; 6. Sliding rod; 601. Stripping plate; 602. Damping telescopic rod; 7. Servo motor B; 701. Rotating rod B; 8. Cooling water tank; 801. Water pump; 802. Water cooling pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the present invention:

[0022] Example 1: Reference Figure 1-7A rapid prototyping mold for easy demoulding includes a fixed base 1, a guide trough 101, a fixed frame 102, a guide rod 103, a hydraulic rod 104, a support frame 105, a material storage box 2, an injection molding frame 3, a feeding frame 301, a servo motor A302, a spiral feeding rod 303, an electric heating pipe 304, an injection molding trough 305 and an extrusion trough 306. The fixed frame 102 is fixedly installed on the top of the fixed base 1, and the four corners of the side of the fixed frame 102 are fixedly installed with guide rods 103, and the hydraulic rods 104 are relatively fixedly installed on the upper and lower sides of the fixed frame 102. The side of the end of the hydraulic rod 104 is fixedly installed with a support frame 105, and the four corners of the support frame 105 are slidably arranged on the outside of the guide rod 103 through a slider, and the injection molding frame 3 is fixedly installed on the top of the fixed base 1 near the side of the support frame 105. A feeding rack 301 is embedded on the top, injection molding grooves 305 are embedded on the sides of the injection molding frame 3 near the four corners, an extrusion groove 306 is embedded between the inner wall side of the injection molding groove 305 and the inner wall side of the injection molding frame 3, a servo motor A302 is fixedly installed on the inner wall side of the injection molding frame 3, the servo motor A302 is connected to the spiral feeding rod 303 through the output shaft, an electric heating pipe 304 is embedded on the inner wall of the injection molding frame 3, and the electric heating pipe 304 is spirally arranged, a material guide groove 101 is embedded above the fixed base 1 near the bottom of the support frame 105, a material storage box 2 is arranged below the fixed base 1 near the bottom of the material guide groove 101, a rotating anti-sticking mechanism for preventing material adhesion is arranged inside the injection molding groove 305, and a sliding demolding mechanism for convenient demolding of injection molding pipe fittings is arranged on the side of the support frame 105.

[0023] Reference Figure 2-6 , further, the rotating anti-sticking mechanism is composed of a rotating rod A106, a gear 107, a rotating frame 4, a copper plate 401, teeth 402, a rotating column 5, a servo motor B7, a rotating rod B701, a cooling water tank 8, a water pump 801 and a water cooling pipe 802;

[0024] A rotating column 5 is rotatably provided on the side of the support frame 105 near the injection molding groove 305 through a bearing, a servo motor B7 is fixedly installed between the upper and lower rotating columns 5 on the side of the support frame 105, the servo motor B7 is connected with a rotating rod B701 through an output shaft, and a chain transmission is provided between the rotating rod B701 and the two opposite rotating columns 5, rotating rods A106 are rotatably provided at the four corners of the inner wall of the support frame 105 near the rotating columns 5 through bearings, a gear 107 is fixedly installed on the outer ring of the rotating rod A106, a rotating frame 4 is rotatably provided on the inner wall of the injection molding groove 305 through a sealing ring and a bearing, and the rotating frame 4 is arranged in a ring shape, a copper plate 401 is fixedly installed on the outer ring of the rotating frame 4, and teeth 402 are fixedly installed on the inner ring of the rotating frame 4, and the teeth 402 have a certain The plurality of teeth 402 and the teeth of the outer ring of the gear 107 are arranged in a meshing transmission arrangement. A cooling water tank 8 is fixedly installed above the injection molding frame 3, and a water pump 801 is embedded in the front of the cooling water tank 8. A water cooling pipe 802 is embedded in the injection molding frame 3, and the water cooling pipe 802 is spirally arranged on the inner wall of the four injection molding grooves 305, and one end of the water cooling pipe 802 is embedded on the side of the water pump 801, and the other end is embedded on the side of the cooling water tank 8. The outer surface material of the rotating frame 4 and the rotating column 5 is PVC. When the staff needs to produce a large number of pipe fittings by injection molding, they carry a large amount of injection molding raw materials and pour them into the feeding frame 301, and turn on the servo motor A302 to drive the spiral feeding rod 303 to rotate, so that the raw materials fall into the injection molding frame 3 continuously. When a large amount of injection molding material in the injection molding frame is transported to the extrusion groove 306 through the spiral feeding rod 303, the electric heating tube 304 is turned on to heat and soften the injection molding material to make the injection molding material in a fluid state. At the same time, the staff controls the hydraulic rod 104 to extend the support frame 105 and slide the slider on the outside of the guide rod 103 to make the guide rod 103 contact with the injection molding groove 305 on the side of the injection molding frame 3. Then, the rotating frame 4 in the injection molding groove 305 will slide into the supporting frame 105, so that the teeth 402 of the inner circle of the rotating frame 4 are engaged with the gear 107. At the same time, the fluid injection molding material in the injection molding frame 3 is introduced into the injection molding groove 305 through the extrusion groove 306. At the same time, the staff turns on the two servo motors B7 to drive the outer ring chain of the rotating rod B701 to drive the four rotating columns 5 through the bearing transmission, so that the rotating columns 5 are driven by the chain The bar drives the rotating rod A106 and the outer ring gear 107 to rotate, and the matching teeth on the outer ring of the gear 107 and the several teeth 402 are engaged with each other to drive the rotating frame 4 to rotate in the opposite direction of the rotating column 5 through the bearing, and when a large amount of fluid injection molding raw materials are introduced into the injection molding groove 305, the rotating column 5 and the rotating frame 4 rotating in the opposite direction continuously scrape the inner and outer ring surfaces of the injection molding pipe fittings that have taken shape to prevent the injection molding pipe fittings from adhering to the rotating column 5 and the rotating frame 4. At the same time, the copper plate 401 on the outer ring of the rotating frame 4 continuously absorbs the heat of the injection molding pipe fittings. The staff then opens the cooling water tank 8 and the water pump 801, and guides the water coolant in the cooling water tank 8 into the water cooling pipe 802 to continuously pass around the copper plate 401, and then guides it back to the cooling water tank 8 from the other end of the water cooling pipe 802 for circulation cooling.The copper plate 401 that absorbs heat is quickly cooled, so that after the injection molded pipe is quickly cooled and formed, the rotating column 5 and the rotating frame 4 that rotate in opposite directions will not easily adhere to the injection molded pipe, making it inconvenient to demould. At the same time, the outer surfaces of the rotating frame 4 and the rotating column 5 made of PVC material with smooth surface, high temperature resistance and aging resistance will not easily make the fluid injection molding raw materials adhere to the outer surfaces of the rotating frame 4 and the rotating column 5 during the drying period when they come into contact with the fluid injection molding raw materials, making it easier to demould the injection molded pipe.

[0025] Reference Figure 1-7 , further, the sliding demoulding mechanism is composed of a slide groove 108, a sliding rod 6, a demoulding plate 601 and a damping telescopic rod 602;

[0026] The four corners of the support frame 105 are embedded with a slide groove 108 near the rotating column 5, and a sliding rod 6 is slidably arranged inside the slide groove 108. A stripping plate 601 is fixedly installed on the side of the sliding rod 6, and the stripping plate 601 is slidingly arranged on the outside of the rotating column 5. A damping telescopic rod 602 is fixedly installed between the side of the sliding rod 6 and the side of the fixed frame 102, and a spring is matched on the outside of the damping telescopic rod 602. When the injection molded pipe between the rotating column 5 and the rotating frame 4 is cooled and formed, the staff controls the hydraulic rod 104 to shrink the support frame 105 and slides on the outside of the guide rod 103 through the slider, so that the rotating column 5 drives the injection molded pipe to slide. When the plastic pipe fittings slide out of the injection molding groove 305, the side sliding rod 6 of the stripping plate 601 of the outer ring of the rotating column 5 will be squeezed and contracted to a certain extent by the damping telescopic rod 602 and the outer spring. The damping telescopic rod 602 and the outer spring will generate a reverse thrust to push the sliding rod 6 to slide on the inner side of the slide groove 108, driving the stripping plate 601 to push the injection molded pipe fittings on the outer ring of the rotating column 5 to slide off the outer ring of the rotating column 5. After demolding, the injection molded pipe fittings fall onto the surface of the material guide groove 101, and fall out along the material guide groove 101 to be collected in the material storage box 2, which is convenient for the staff to quickly demold the injection molded injection molded pipe fittings.

[0027] Reference Figure 1 , 2 Furthermore, the hydraulic rod 104 is electrically connected to an external power source through a hydraulic pump and a control panel, and the servo motor A302, electric heating pipe 304, servo motor B7, cooling water tank 8 and water pump 801 are all electrically connected to an external power source through control.

[0028] Embodiment 2

[0029] like Figure 2-7As shown, in addition to the embodiment in which the outer surfaces of the rotating frame 4 and the rotating column 5 are made of PVC, the present invention also has another embodiment in which the outer surfaces of the rotating frame 4 and the rotating column 5 are made of polytetrafluoroethylene. Since polytetrafluoroethylene has the characteristics of non-adhesion, high lubricity, high and low temperature resistance and corrosion resistance, when the outer surfaces of the rotating frame 4 and the rotating column 5 are in contact with the fluid injection molding raw material, the friction between the fluid injection molding raw material and the outer surfaces of the rotating frame 4 and the rotating column 5 is reduced, so that when the rotating frame 4 and the rotating column 5 rotate, the probability of the fluid injection molding raw material adhering to the surface of the rotating frame 4 and the rotating column 5 will be smaller, making it easier to demold the injection molded pipe fittings after molding.

[0030] Working principle: First, when the staff needs to produce a large number of pipe fittings by injection molding, they carry a large amount of injection molding raw materials and pour them into the feeding rack 301, and turn on the servo motor A302 to drive the spiral feeding rod 303 to rotate, so that a large amount of injection molding raw materials that continuously fall into the injection molding rack 3 are transported to the extrusion groove 306 through the spiral feeding rod 303. When the electric heating tube 304 is turned on to heat and soften the injection molding raw materials, so that the injection molding raw materials are in a fluid state, the staff controls the hydraulic rod 104 to extend the support frame 105 and slide the slider on the outside of the guide rod 103 to make the guide rod 103 contact with the injection molding groove 305 on the side of the injection molding rack 3. Then, the rotating rack 4 in the injection molding groove 305 will slide into the support frame 105, so that the inner circle of the rotating rack 4 is several After the teeth 402 engage with the gear 107, the fluid injection molding material in the injection molding frame 3 is introduced into the injection molding groove 305 through the extrusion groove 306. At the same time, the staff turns on the two servo motors B7 to drive the outer ring chain of the rotating rod B701 to drive the four rotating columns 5 through the bearing transmission. Then, the rotating column 5 drives the rotating rod A106 and the outer ring gear 107 to rotate through the chain. The teeth of the outer ring of the gear 107 and the teeth 402 engage with each other to drive the rotating frame 4 to rotate in the opposite direction of the rotating column 5 through the bearing. When a large amount of fluid injection molding material is introduced into the injection molding groove 305, the rotating columns 5 and the rotating frame 4 rotating in the opposite direction are constantly in the injection molding pipe fitting that has taken shape. The surface of the inner ring and the outer ring are scraped to prevent the injection molded pipe from adhering to the rotating column 5 and the rotating frame 4. At the same time, the copper plate 401 on the outer ring of the rotating frame 4 continuously absorbs the heat of the injection molded pipe. The staff then turns on the cooling water tank 8 and the water pump 801, and guides the water coolant in the cooling water tank 8 into the water cooling pipe 802 to continuously pass around the copper plate 401, and then guides it back from the other end of the water cooling pipe 802 into the cooling water tank 8 for circulation cooling, so as to quickly cool the copper plate 401 that absorbs heat. Finally, after the injection molded pipe is quickly cooled and formed, the rotating column 5 and the rotating frame 4 that rotate in the opposite direction will not easily adhere to the injection molded pipe, which makes demoulding inconvenient. At the same time, the staff controls the hydraulic rod 104 to shrink the support frame 10 The slider slides on the outside of the guide rod 103, so that the rotating column 5 drives the injection molded pipe to slide out of the injection groove 305. At the same time, the sliding rod 6 on the side of the stripping plate 601 of the outer ring of the rotating column 5 will be squeezed and contracted to a certain extent by the damping telescopic rod 602 and the outer spring. The damping telescopic rod 602 and the outer spring generate a reverse thrust to push the sliding rod 6 to slide inside the slide groove 108, driving the stripping plate 601 to push the injection molded pipe on the outer ring of the rotating column 5 to slide off the outer ring of the rotating column 5. After demolding, the injection molded pipe falls to the surface of the guide groove 101, and falls out along the guide groove 101 to be collected in the material storage box 2, which is convenient for the staff to quickly demold the injection molded pipe.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid prototyping mold that is easy to demould, comprising a fixed base (1), a material guide trough (101), a fixed frame (102), a guide rod (103), a hydraulic rod (104), a support frame (105), a material storage box (2), an injection molding frame (3), a material feeding frame (301), a servo motor A (302), a spiral feeding rod (303), an electric heating pipe (304), an injection molding trough (305) and an extrusion trough (306), wherein the fixed base (1) is fixedly mounted with a fixed frame (102) on the top, the four corners of the side of the fixed frame (102) are fixedly mounted with guide rods (103), the side of the fixed frame (102) is relatively fixedly mounted with hydraulic rods (104) on the top and bottom, the side of the end of the hydraulic rod (104) is fixedly mounted with a support frame (105), and the four corners of the support frame (105) are slidably arranged on the outside of the guide rod (103) through a sliding block, and the fixed base (1) An injection molding frame (3) is fixedly installed on the upper side near the support frame (105), a feeding frame (301) is embedded on the upper side of the injection molding frame (3), injection molding grooves (305) are embedded on the sides of the injection molding frame (3) near the four corners, an extrusion groove (306) is embedded between the inner wall side of the injection molding groove (305) and the inner wall side of the injection molding frame (3), a servo motor A (302) is fixedly installed on the inner wall side of the injection molding frame (3), the servo motor A (302) is connected to a spiral feeding rod (303) through an output shaft, an electric heating pipe (304) is embedded on the inner wall of the injection molding frame (3), and the electric heating pipe (304) is spirally arranged, a material guide groove (101) is embedded on the upper side of the fixed base (1) near the lower side of the support frame (105), and a material storage box (2) is arranged below the fixed base (1) near the lower side of the material guide groove (101), characterized in that: The injection molding groove (305) is provided with a rotating anti-sticking mechanism to prevent the material from sticking, and the side of the support frame (105) is provided with a sliding demoulding mechanism to facilitate the demoulding of the injection molded pipe.

2. A rapid prototyping mold that is easy to demould as claimed in claim 1, characterized in that: The rotating anti-sticking mechanism is composed of a rotating rod A (106), a gear (107), a rotating frame (4), a copper plate (401), teeth (402), a rotating column (5), a servo motor B (7), a rotating rod B (701), a cooling water tank (8), a water pump (801) and a water cooling pipe (802); A rotating column (5) is rotatably arranged on the side of the support frame (105) near the side of the injection molding groove (305) via a bearing, a servo motor B (7) is fixedly installed between the upper and lower rotating columns (5) on the side of the support frame (105), the servo motor B (7) is connected to a rotating rod B (701) via an output shaft, and a chain transmission is arranged between the rotating rod B (701) and the two opposite rotating columns (5), rotating rods A (106) are rotatably arranged on the four corners of the inner wall of the support frame (105) near the rotating columns (5), a gear (107) is fixedly installed on the outer ring of the rotating rod A (106), and the inner wall of the injection molding groove (305) is fixedly installed with a gear (107). A rotating frame (4) is rotatably arranged on the sealing ring and the bearing, and the rotating frame (4) is arranged in a ring shape, a copper plate (401) is fixedly installed on the outer ring of the rotating frame (4), and teeth (402) are fixedly installed on the inner ring of the rotating frame (4), a cooling water tank (8) is fixedly installed above the injection molding frame (3), a water pump (801) is embedded in the front of the cooling water tank (8), a water cooling pipe (802) is embedded in the injection molding frame (3), and the water cooling pipe (802) is spirally arranged around the inner walls of the four injection molding grooves (305), and one end of the water cooling pipe (802) is embedded in the side of the water pump (801), and the other end is embedded in the side of the cooling water tank (8).

3. A rapid prototyping mold that is easy to demould as claimed in claim 1, characterized in that: The sliding demoulding mechanism is composed of a slide groove (108), a sliding rod (6), a demoulding plate (601) and a damping telescopic rod (602); The four corners of the support frame (105) are embedded with sliding grooves (108) near the rotating column (5), and a sliding rod (6) is slidably arranged inside the sliding groove (108). A stripping plate (601) is fixedly installed on the side of the sliding rod (6), and a damping telescopic rod (602) is fixedly installed between the side of the sliding rod (6) and the side of the fixed frame (102), and a spring is matched with the outside of the damping telescopic rod (602).

4. A rapid prototyping mold that is easy to demould as claimed in claim 2, characterized in that: There are a plurality of teeth (402) which are arranged in a trapezoidal shape and at equal intervals, and the plurality of teeth (402) and the teeth matching the outer ring of the gear (107) are arranged in a meshing transmission arrangement.

5. A rapid prototyping mold that is easy to demould as claimed in claim 2, characterized in that: The outer surfaces of the rotating frame (4) and the rotating column (5) are made of PVC.

6. A rapid prototyping mold that is easy to demould as claimed in claim 3, characterized in that: The stripping plate (601) is slidably arranged on the outside of the rotating column (5).

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