A rapid prototyping mold that is easy to demould

Abstract

The present invention discloses a rapid prototyping mold that is easy to demould, which belongs to the field of injection molding technology and includes 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 above the fixed base, and guide rods are fixedly installed at the four corners of the fixed frame. In the present invention, the sliding rod on the side of the stripping plate of the outer ring of the rotating column will be squeezed and contracted to a certain extent by the damping telescopic rod and the outer spring. The damping telescopic rod and the outer spring generate a reverse thrust to push the sliding rod to slide inside the slide groove, driving the stripping plate to push the injection molding pipe fittings of the outer ring of the rotating column to slide from the outer ring of the rotating column. After demoulding, the injection molding pipe fittings fall onto the surface of the material guide trough and fall out into the material storage box along the material guide trough for collection, which facilitates the staff to perform rapid demoulding on the injection molding pipe fittings.

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 easy to demould. Background Art

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

[0003] Among them, the search found that the application number is CN202123421477.1, an automatic demoulding device for plastic pipe fittings, which has a feature that when the injection molding machine moves upward, the compression spring will use elastic force to drive the movable plate to rise, so that the movable plate can drive the vertical rod and the connecting rod to rise, and the rising connecting rod can drive the ring to rise, so that the ring can push the formed plastic pipe fitting out of the mold groove to facilitate demoulding; Among them, the shortcomings are as follows:

[0004] When the staff uses this 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 movable plate to rise, and drive the vertical rod and the connecting rod to rise, so that the 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 convenient for demoulding, comprising 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, wherein a fixed frame is fixedly installed above the fixed base, and guide rods are fixedly installed at the four corners of the side of the fixed frame, hydraulic rods are fixedly installed on the upper and lower sides of the fixed frame, and 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 above the fixed base near the side of the support frame, and an inlet is embedded above the injection molding frame. The material rack has injection grooves 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 in the inner wall of the injection molding rack, and the electric heating pipe is spirally arranged, a material guide trough is embedded above the fixed base near the bottom of the support frame, and a material storage box is provided below the fixed base near the bottom of the material guide trough, a rotating anti-sticking mechanism is provided inside the injection molding groove to prevent material adhesion, and a sliding demolding mechanism is provided on the side of the support frame to facilitate demolding of injection molded pipe fittings.

[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 groove is provided with a rotating column through a bearing for rotation. The side of the support frame is fixedly installed with a servo motor B between the upper and lower rotating columns. 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 near the rotating column through bearings for rotation. The outer ring of the rotating rod A is fixedly installed with a gear. The inner wall of the injection groove is fixed with a sealing ring and The bearing is rotated with a rotating frame, 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 matching teeth on 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 inside of the injection molding frame, and the water cooling pipe is spirally arranged around the inner walls of the 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 demoulding 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 slidingly arranged on the inside of the slide groove. A stripping plate is fixedly installed on the side of the sliding rod, and the stripping plate is slidingly 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 with 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 rapid prototyping mold that is easy to demold is equipped with a rotating anti-sticking mechanism, which allows workers 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, 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 process, causing adhesion, thereby avoiding the effect of adhesion and inconvenience in demolding.

[0011] 2. This rapid prototyping mold that is easy to demould is equipped with a sliding demoulding mechanism, which allows the staff to cooperate between the slide groove, sliding rod, stripping plate and damping telescopic rod. When the staff controls the hydraulic rod to retract the support frame and 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 inside the slide groove to push out the injection molded pipe fittings on the outer ring of the rotating column, so that the staff can quickly perform the demoulding process. 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 This is a schematic diagram of the front cross-sectional structure of the injection molding machine of the present invention;

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

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

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

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

[0018] Figure 7 It 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 clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] In the present invention:

[0022] Example 1: Reference Figure 1-7, a rapid prototyping mold that is easy to demould, including 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, a fixed frame 102 is fixedly installed above the fixed base 1, and the four corners of the fixed frame 102 are fixedly installed with guide rods 103, a hydraulic rod 104 is fixedly installed on the upper and lower sides of the fixed frame 102, and a support frame 105 is fixedly installed on the side of the end of the hydraulic rod 104, and the four corners of the support frame 105 are slidably arranged on the outside of the guide rod 103 through a slider, an injection molding frame 3 is fixedly installed on the upper side of the fixed base 1 near the side of the support frame 105, and the injection molding frame 3 A feeding rack 301 is embedded at the top, and 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 in the inner wall of the injection molding frame 3, and the electric heating pipe 304 is spirally arranged. A material guide trough 101 is embedded above the fixed base 1 near the bottom of the support frame 105, and a material storage box 2 is provided below the fixed base 1 near the bottom of the material guide trough 101. A rotating anti-sticking mechanism is provided inside the injection molding groove 305 to prevent material adhesion, and a sliding demolding mechanism is provided on the side of the support frame 105 to facilitate demolding of the injection molded pipe fittings.

[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 side of the injection molding groove 305 through bearings, 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 to the rotating rod B701 through the output shaft, and the rotating rod B701 and the two opposite rotating columns 5 are arranged through a chain transmission, the four corners of the inner wall of the support frame 105 near the rotating columns 5 are rotatably provided with rotating rods A106 through bearings, the outer ring of the rotating rod A106 is fixedly installed with a gear 107, the inner wall of the injection molding groove 305 is rotatably provided with a rotating frame 4 through a sealing ring and a bearing, and the rotating frame 4 is arranged in a ring shape, the outer ring of the rotating frame 4 is fixedly installed with a copper plate 401, the inner ring of the rotating frame 4 is fixedly installed with teeth 402, 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 around 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 rack 301, and turn on the servo motor A302 to drive the spiral feeding rod 303 to rotate, so that the raw materials continuously fall into the injection molding frame 3. When a large amount of injection molding raw materials are 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 raw materials so that the injection molding raw materials are 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 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 on the inner ring of the rotating frame 4 are engaged with the gear 107. At the same time, the fluid injection molding raw materials in the injection molding frame 3 are 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 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 material is 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 that has taken shape to prevent the injection molding 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 molding pipe. 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, which has absorbed heat, is quickly cooled, allowing the molded tube to be quickly cooled and formed. The rotating column 5 and rotating frame 4, which rotate in opposite directions, will not easily adhere to the molded tube, making demolding inconvenient. Furthermore, the outer surfaces of the rotating frame 4 and rotating column 5, made of PVC with smooth, high-temperature and aging-resistant properties, will not easily adhere to the outer surfaces of the rotating frame 4 and rotating column 5 during the drying process when in contact with the fluid molding material, making demolding of the molded tube easier.

[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 slidingly set 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 set 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 with 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 retract 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. As 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 inside 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 guide groove 101 and fall out along the guide groove 101 into the storage box 2 for collection, 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 the external power supply through the hydraulic pump and the control panel, and the servo motor A302, the electric heating pipe 304, the servo motor B7, the cooling water tank 8 and the water pump 801 are all electrically connected to the external power supply through control.

[0028] Example 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-stickiness, high lubricity, high and low temperature resistance, and corrosion resistance, when the outer surfaces of the rotating frame 4 and the rotating column 5 come into contact with the fluid injection molding material, the friction between the fluid injection molding 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 material adhering to the surfaces of the rotating frame 4 and the rotating column 5 will be smaller, making it easier to demold the injection molded pipe fitting 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 trough 306 through the spiral feeding rod 303. At the same time, the electric heating tube 304 is turned on to heat and soften the injection molding raw materials, making the injection molding raw materials fluid. 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 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 supporting rack 105, so that the inner circle of the rotating rack 4 is several times 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 tank 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 on 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 tank 305, the rotating columns 5 and the rotating frame 4 rotating in opposite directions continuously rotate in the injection molding pipe fitting that has taken shape. The surface of the ring and outer ring is scraped to prevent the injection molded pipe from adhering to the rotating column 5 and the rotating frame 4. At the same time, the outer copper plate 401 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 to the cooling water tank 8 from the other end of the water cooling pipe 802 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 opposite directions 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, causing the rotating column 5 to drive 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 is 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 sliding 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 onto the surface of the guide groove 101 and falls out of the guide groove 101 to be collected in the material storage box 2, which facilitates 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 scope of protection 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) above, 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) above and below, 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 all arranged on the outside of the guide rod (103) through sliding blocks, 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), an injection molding groove (305) is embedded on the side 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 trough (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 provided below the fixed base (1) near the lower side of the material guide trough (101), characterized in that: The injection molding groove (305) is provided with a rotating anti-sticking mechanism to prevent the material from adhering, and the side of the support frame (105) is provided with a sliding demoulding mechanism to facilitate the demoulding of the injection molded pipe. 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); The side of the support frame (105) near the side of the injection molding groove (305) is provided with a rotating column (5) through a bearing, and the side of the support frame (105) is fixedly installed with a servo motor B (7) between the upper and lower rotating columns (5). The servo motor B (7) is connected to a rotating rod B (701) through an output shaft, and the rotating rod B (701) and the two opposite rotating columns (5) are arranged through a chain transmission. The four corners of the inner wall of the support frame (105) near the rotating column (5) are provided with a rotating rod A (106) through a bearing, and the outer ring of the rotating rod A (106) is fixedly installed with a gear (107). The inner wall of the injection molding groove (305) is fixedly installed with a servo motor B (7) between the upper and lower rotating columns (5). The servo motor B (7) is connected to a rotating rod B (701) through an output shaft, and the rotating rod B (701) and the two opposite rotating columns (5) are arranged through a chain transmission. The sealing ring and the bearing are rotatably provided with a rotating frame (4), and the rotating frame (4) is provided 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), 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 interior of 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).

2. A rapid prototyping mold that is easy to demould according to 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 provided 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).

3. The rapid prototyping mold for easy demoulding according to claim 1, characterized in that: There are a plurality of teeth (402) arranged in a trapezoidal shape and at equal intervals, and the plurality of teeth (402) and the teeth of the outer ring of the gear (107) are engaged with each other in a transmission arrangement.

4. The rapid prototyping mold for easy demoulding according to claim 1, characterized in that: The outer surfaces of the rotating frame (4) and the rotating column (5) are made of PVC.

5. The rapid prototyping mold for easy demoulding according to claim 2, characterized in that: The stripping plate (601) is arranged to fit and slide on the outside of the rotating column (5).

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