Rapid forming mold for silica gel wax mold

Abstract

The invention relates to the technical field of injection molding, and discloses a silica gel wax mold rapid forming mold which comprises a base, the upper surface of the base is fixedly connected with a pouring shell and a fixing support, and a sealing cover is arranged below the fixing support; the lifting base is slidably connected to the inner wall of the pouring shell, a lifting wafer is arranged on the upper surface of the lifting base, and a rotating wafer is arranged on the upper surface of the lifting wafer; wherein the moving track of the lifting base comprises three specified stroke intervals, and when the lifting base moves in the three specified stroke intervals, the rotating wafer is driven to rotate around the axis of the rotating wafer. According to the rapid forming mold for the silica gel wax mold, the problems that in the prior art, the adhesion strength between the wax mold and the mold is high, the wax mold is difficult to directly take out from the mold, and the demolding process wastes time and labor, so that the production efficiency of the wax mold is reduced can be effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding, in particular to a silica gel wax mold rapid forming mold. BACKGROUND

[0002] The silica gel wax mold is a special mold for handicrafts, which has the characteristics of high temperature resistance, corrosion resistance, high simulation, etc. The injection molding machine fills the molten wax material into the mold cavity through high pressure to form the preliminary shape of the wax mold. After the wax mold cools and solidifies, the mold is opened to take out the wax mold. In the injection molding process of the wax mold, the wax material is formed in a closed mold, which has less material waste and high utilization rate, which helps to reduce production cost and reduce the demand for raw materials.

[0003] At present, in the process of injection molding of the wax mold, the high-temperature molten wax in the mold cools and solidifies, and the wax mold is tightly wrapped on the mold cavity. The adhesion strength between the wax mold and the mold is high, and it is difficult to directly take out the wax mold from the mold. The demolding process is time-consuming and laborious, thereby reducing the production efficiency of the wax mold. SUMMARY

[0004] In view of the above shortcomings of the prior art, the present application provides a silica gel wax mold rapid forming mold, which can effectively solve the problem of high adhesion strength between the wax mold and the mold, difficult to directly take out the wax mold from the mold, time-consuming and laborious demolding process, thereby reducing the production efficiency of the wax mold.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: The present application provides a silica gel wax mold rapid forming mold, comprising: The upper surface of the base is fixedly connected with a pouring shell and a fixed support, respectively, and the lower part of the fixed support is provided with a cover; The lifting base is slidingly connected to the inner wall of the pouring shell, and the upper surface of the lifting base is provided with a lifting disc, and the upper surface of the lifting disc is provided with a rotating disc; The moving track of the lifting base includes three specified travel intervals. When the lifting base moves in the three specified travel intervals, the rotating disc is driven to rotate around its own axis, the lifting disc is driven to move along its own axial direction, and the rotating disc is driven to move along its own axial direction.

[0006] Further, the upper surface of the base is fixedly connected with a second air cylinder, the extension end of the second air cylinder is fixedly connected with the inner wall top of the lifting base, the upper surface of the fixed support is fixedly connected with a first air cylinder, and the extension end of the first air cylinder penetrates through the fixed support and is fixedly connected with the upper surface of the cover.

[0007] Further, the inner wall top of the lifting base is fixedly connected with an outer shell, the lower surface of the lifting disc is fixedly connected with an inner shell, the inner wall of the outer shell is fixedly connected with a lifting slide rail, and the inner shell is slidably connected with the outer shell through the lifting slide rail.

[0008] Further, the two sides of the inner shell are fixedly connected with side rods, the inner wall of the lifting base is rotatably connected with a first rotating rod, the circumferential outer surface of the first rotating rod is fixedly connected with a pushing handle, the outer surface of the pushing handle is provided with a pushing hole, and the side rods are slidably connected with the pushing handle through the pushing hole.

[0009] Further, the circumferential outer surface of the first rotating rod is fixedly connected with a rotating handle, and the inner wall of the pouring shell is fixedly connected with an abutting block.

[0010] Further, the lower surface of the rotating disc is fixedly connected with a shaft rod, the bottom end of the shaft rod is fixedly connected with a first bevel gear, the inner wall of the lifting base is rotatably connected with a second rotating rod, the circumferential outer surface of the second rotating rod is fixedly connected with a second bevel gear, and the first bevel gear is meshedly connected with the second bevel gear.

[0011] Further, the two ends of the second rotating rod penetrate through the side wall of the lifting base and are fixedly connected with transmission gears, and the two sides of the pouring shell are fixedly connected with racks, and the transmission gears are meshedly connected with the racks.

[0012] Further, the circumferential outer surface of the shaft rod is fixedly connected with a mounting ring body, the circumferential outer surface of the mounting ring body is rotatably connected with a lifting ring body, and two lifting ring bodies located in the same inner shell are fixedly connected with a connecting rod.

[0013] Further, the lower surface of the lifting ring body is fixedly connected with a bottom rod, the bottom end of the bottom rod is rotatably connected with a ball, the inner wall bottom of the inner shell is rotatably connected with a rotating ring body, and the upper surface of the rotating ring body is fixedly connected with a squeezing plug.

[0014] Further, the circumferential outer surface of the rotating ring body is rotatably connected with a pulley, the inner wall of the outer shell is provided with a guide slide, and the pulley is slidably connected in the inner part of the guide slide. The guide slide comprises a vertical slide and a spiral slide, and the top end of the vertical slide is in communication with the bottom end of the spiral slide.

[0015] Compared with the prior art, the technical scheme provided by the application has the following beneficial effects: 1. This invention uses a lifting base to push the wax model upward along the inner wall of the casting shell. The upward movement of the wax model only needs to overcome the wrapping force between the wax model and the inner wall of the casting shell, and does not need to overcome the wrapping force between the wax model and the lifting base. Therefore, the wax model only needs to release the adhesion effect from the casting shell, but does not need to release the adhesion effect from the lifting base, which reduces the resistance effect during the upward movement of the wax model. In addition, the lifting base pushes the lower surface of the wax model upward as a whole, preventing deformation and damage to the lower surface and sides of the wax model.

[0016] 2. This invention uses three sets of rotating discs to rotate around their own axes, thereby releasing the adhesion between the lower surface of the wax model and the three sets of rotating discs, thus reducing the wrapping force between the lower surface of the wax model and the lifting base, the lifting discs, and the rotating discs.

[0017] 3. The present invention uses three sets of lifting discs to push the wax model upward relative to the lifting base. During the process of the three sets of lifting discs pushing the wax model upward relative to the lifting base, it is only necessary to overcome the wrapping force between the lower surface of the wax model and the lifting base, without overcoming the wrapping force between the wax model and the casting shell. The wax model only needs to release the adhesion effect from the lifting base, thereby greatly reducing the resistance effect on the wax model and avoiding damage to the lower surface of the wax model by the three sets of lifting discs.

[0018] 4. This invention uses three sets of rotating discs to push the wax model upward relative to the lifting discs. During the process of the three sets of rotating discs pushing the wax model upward relative to the lifting discs, it is only necessary to overcome the adhesive force between the lower surface of the wax model and the lifting discs. Since the contact area between the lifting discs and the lower surface of the wax model is small, the adhesive force between the wax model and the lifting discs is weak, thereby ensuring that the three sets of rotating discs will not damage the lower surface of the wax model.

[0019] In summary, by sequentially demolding the wax model inside the casting shell in a specific order, the wax model can be completely removed from the inside of the casting shell. The demolding process is simple and convenient, and the demolding time is short, thereby improving the production efficiency of wax models. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the lifting disc structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the lifting base according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the second cylinder in an embodiment of the present invention; Figure 5 This is a schematic diagram of the right-side structure of the push handle according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second rotating rod in an embodiment of the present invention; Figure 7 This is a schematic diagram of the separation structure of the inner shell in an embodiment of the present invention; Figure 8 This is a schematic diagram of the extrusion plug according to an embodiment of the present invention.

[0022] The labels in the diagram represent: 1. Base; 11. Cast shell; 12. Fixed bracket; 13. Cover; 2. Lifting base; 21. Lifting disc; 211. Outer shell; 212. Inner shell; 213. Lifting slide rail; 214. Side rod; 215. First rotating rod; 216. Push handle; 2161. Push hole; 217. Rotating handle; 218. Contact block; 22. Rotating disc; 221. Shaft; 22 2. First bevel gear; 223. Second rotating rod; 224. Second bevel gear; 225. Transmission gear; 226. Rack; 3. Mounting ring; 31. Lifting ring; 311. Connecting rod; 32. Base rod; 33. Ball bearing; 34. Rotating ring; 35. Extrusion insert; 36. Pulley; 37. Guide slide; 371. Vertical slide; 372. Spiral slide; 4. First cylinder; 41. Second cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] The present invention will be further described below with reference to embodiments.

[0025] Example: Please see Figures 1-8 This invention provides a technical solution: a rapid prototyping mold for silicone wax molds, comprising: The base 1 has a casting shell 11 and a fixing bracket 12 fixedly connected to its upper surface, and a cover 13 is provided below the fixing bracket 12. The lifting base 2 is slidably connected to the inner wall of the casting shell 11. The upper surface of the lifting base 2 is provided with a lifting disc 21, and the upper surface of the lifting disc 21 is provided with a rotating disc 22. The movement trajectory of the lifting base 2 includes three specified travel intervals. When the lifting base 2 moves within the three specified travel intervals, it drives the rotating disc 22 to rotate around its own axis, drives the lifting disc 21 to move along its own axis, and drives the rotating disc 22 to move along its own axis, respectively.

[0026] A second cylinder 41 is fixedly connected to the upper surface of the base 1. The telescopic end of the second cylinder 41 is fixedly connected to the top of the inner wall of the lifting base 2. A first cylinder 4 is fixedly connected to the upper surface of the fixed bracket 12. The telescopic end of the first cylinder 4 passes through the fixed bracket 12 and is fixedly connected to the upper surface of the cover 13.

[0027] The top of the inner wall of the lifting base 2 is fixedly connected to the outer shell 211, the lower surface of the lifting disc 21 is fixedly connected to the inner shell 212, the inner wall of the outer shell 211 is fixedly connected to the lifting slide rail 213, and the inner shell 212 is slidably connected to the outer shell 211 through the lifting slide rail 213.

[0028] Side rods 214 are fixedly connected to both sides of the inner shell 212. A first rotating rod 215 is rotatably connected to the inner wall of the lifting base 2. A push handle 216 is fixedly connected to the outer circumference of the first rotating rod 215. A push hole 2161 is opened on the outer surface of the push handle 216. The side rods 214 are slidably connected to the push handle 216 through the push hole 2161.

[0029] A rotating handle 217 is fixedly connected to the outer circumference of the first rotating rod 215, and an abutment block 218 is fixedly connected to the inner wall of the casting shell 11.

[0030] A shaft 221 is fixedly connected to the lower surface of the rotating disc 22. A first bevel gear 222 is fixedly connected to the bottom end of the shaft 221. A second rotating rod 223 is rotatably connected to the inner wall of the lifting base 2. A second bevel gear 224 is fixedly connected to the outer circumference of the second rotating rod 223. The first bevel gear 222 and the second bevel gear 224 are meshed together.

[0031] Both ends of the second rotating rod 223 pass through the side wall of the lifting base 2 and are fixedly connected to the transmission gear 225. Both sides of the casting shell 11 are fixedly connected to the rack 226, and the transmission gear 225 and the rack 226 are meshed together.

[0032] A mounting ring 3 is fixedly connected to the outer circumference of the shaft 221, and a lifting ring 31 is rotatably connected to the outer circumference of the mounting ring 3. A connecting rod 311 is fixedly connected between the two lifting rings 31 located in the same inner shell 212.

[0033] A base rod 32 is fixedly connected to the lower surface of the lifting ring 31, and a ball bearing 33 is rotatably connected to the bottom end of the base rod 32. A rotating ring 34 is rotatably connected to the bottom of the inner wall of the inner shell 212, and a compression insert 35 is fixedly connected to the upper surface of the rotating ring 34.

[0034] A pulley 36 is rotatably connected to the outer circumference of the rotating ring 34, and a guide slide 37 is provided on the inner wall of the outer shell 211, with the pulley 36 slidably connected inside the guide slide 37. The guide slide 37 includes a vertical slide 371 and a spiral slide 372, with the top end of the vertical slide 371 connected to the bottom end of the spiral slide 372.

[0035] Working principle: Injection molding process of wax molds: In practical applications, by activating the first cylinder 4, the two first cylinders 4 drive the cover 13 to move vertically downward through the telescopic end. The cover 13 moves downward and fits against the top of the casting shell 11, thus sealing the casting shell 11. Molten wax is injected into the interior of the casting shell 11 through the injection port provided on the casting shell 11. After the molten wax cools and solidifies, the first cylinder 4 is activated again. The two first cylinders 4 drive the cover 13 to move vertically upward through the telescopic end, thereby opening the casting shell 11.

[0036] As described above, the movement trajectory of the lifting base 2 includes three specific ranges of travel: During the first leg of the journey: In practical applications, by activating the second cylinder 41, the four second cylinders 41 drive the lifting base 2 to move upward along the inner wall of the casting shell 11 via the telescopic end. The lifting base 2 pushes the wax model on its upper surface to move upward along the inner wall of the casting shell 11. During the upward movement of the wax model along the inner wall of the casting shell 11, the pushing force of the lifting base 2 on the wax model is evenly applied to the lower surface of the wax model. At this time, the upward movement of the wax model only needs to overcome the wrapping force between the wax model and the inner wall of the casting shell 11, and does not need to overcome the wrapping force between the wax model and the lifting base 2. Therefore, the wax model only needs to release the adhesion effect from the casting shell 11, and does not need to release the adhesion effect from the lifting base 2, thereby reducing the resistance effect during the upward movement of the wax model (if the wax model is separated from both the casting shell 11 and the lifting base 2 at the same time, the wax model will be subject to greater resistance). In addition, the lifting base 2 pushes the lower surface of the wax model upward as a whole, preventing deformation and damage to the lower surface and sides of the wax model.

[0037] As a further embodiment of the present invention, during the upward movement of the lifting base 2 along the inner wall of the casting shell 11, the lifting base 2 drives the second rotating rod 223 on its inner wall to move vertically upward. The second rotating rod 223 drives the transmission gears 225 at both ends of it to move vertically upward, so that the two transmission gears 225 move upward along the two racks 226 respectively. Under the meshing action of the transmission gears 225 and the racks 226, the second rotating rod 223 rotates around its own axis. The second rotating rod 223 drives the three sets of second bevel gears 224 on its outer circumference to rotate around the axis of the second rotating rod 223. Under the meshing action of the second bevel gears 224 and the first bevel gear 222, the three sets of The second bevel gear 224 drives the three sets of first bevel gears 222 to rotate around the axis of shaft 221. The three sets of first bevel gears 222 drive the three sets of shafts 221 to rotate around their own axes. The three sets of shafts 221 drive the three sets of rotating discs 22 at their top to rotate around their own axes. Under the rotation of the three sets of rotating discs 22, the adhesion between the lower surface of the wax model and the three sets of rotating discs 22 is released, thereby reducing the wrapping force between the lower surface of the wax model and the lifting base 2, the lifting disc 21 and the rotating discs 22. During the rotation of the three sets of rotating discs 22, the upper surface of the three sets of rotating discs 22 is always in contact with the lower surface of the wax model, thereby avoiding damage to the lower surface of the wax model by the three sets of rotating discs 22.

[0038] During the second leg of the journey: In practical applications, during the upward movement of the lifting base 2, the lifting base 2 drives the two first rotating rods 215 on its inner wall to move upward. The two first rotating rods 215 drive the two sets of rotating handles 217 on their outer circumference to move upward. Under the action of the two sets of abutting blocks 218, the two sets of abutting blocks 218 push the bottom end of the rotating handle 217 downward through their arc surfaces. The two sets of rotating handles 217 drive the two first rotating rods 215 to rotate around their own axes. The two rotating first rotating rods 215 drive the push handles 216 on their outer circumference to rotate upward. Under the limiting action of the lifting slide rail 213, the push handles 216 push the side rods 214 and the inner shell 212 upward along the lifting slide rail 213 through the push hole 2161 (e.g., Figure 4 and Figure 5As shown, during the upward rotation of the push handle 216 around the first rotating rod 215, the side rod 214 will not come into contact with the inner wall of the push hole 2161. The inner shell 212 drives the lifting disc 21 at its top to move upward relative to the lifting base 2. The three sets of lifting discs 21 push the wax model on the lifting base 2 upward relative to the lifting base 2. During the upward push of the wax model relative to the lifting base 2 by the three sets of lifting discs 21, it is only necessary to overcome the wrapping force between the lower surface of the wax model and the lifting base 2, and it is not necessary to overcome the wrapping force between the wax model and the casting shell 11. Similarly, the wax model only needs to release the adhesion effect with the lifting base 2, thereby greatly reducing the resistance effect on the wax model and avoiding damage to the lower surface of the wax model by the three sets of lifting discs 21.

[0039] In the third leg of the journey: In practical applications, as the inner shell 212 slides upward along the lifting slide rail 213, the inner shell 212 drives two rotating rings 34 on the bottom of its inner wall to move upward relative to the outer shell 211. The rotating rings 34 drive the pulleys 36 on their outer circumference to move upward along the guide slide rail 37. After the pulleys 36 slide upward along the vertical slide rail 371 and connect with the spiral slide rail 372, the rotating rings 34 rotate around their own axis under the limiting action of the spiral slide rail 372. The rotating rings 34 drive the pressing inserts 35 on their upper surface to rotate synchronously. Under the connecting action of the connecting rod 311, the rotation angle of the two lifting rings 31 is limited, so that the lifting rings 31 cannot rotate around the axis of the mounting ring 3, but the mounting ring 3 can rotate around the axis of the lifting rings 31. The rotating pressing inserts 35 are pushed by the balls 33. The moving base rod 32 and the lifting ring 31 move upward relative to the inner shell 212. The lifting ring 31 drives the mounting ring 3 on its inner wall to move upward relative to the inner shell 212. The mounting ring 3 drives the shaft 221 on its inner wall to move upward relative to the inner shell 212. The shaft 221 drives the rotating disc 22 at its top to move upward relative to the lifting disc 21. The three sets of rotating discs 22 push the wax model on the lifting disc 21 upward relative to the lifting disc 21. During the process of the three sets of rotating discs 22 pushing the wax model upward relative to the lifting disc 21, it is only necessary to overcome the adhesion between the lower surface of the wax model and the lifting disc 21. Since the contact area between the lifting disc 21 and the lower surface of the wax model is small, the adhesion between the wax model and the lifting disc 21 is weak, thus ensuring that the three sets of rotating discs 22 will not damage the lower surface of the wax model.

[0040] In summary, through the three specific ranges of travel during the upward movement of the lifting base 2, the wax model can be completely removed from the inside of the casting shell 11. The demolding process is simple and convenient, and the demolding time is short, thereby improving the production efficiency of wax models.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid prototyping mold for silicone wax molds, characterized in that, include: The base (1) has a casting shell (11) and a fixed bracket (12) fixedly connected to its upper surface, and a cover (13) is provided below the fixed bracket (12). The lifting base (2) is slidably connected to the inner wall of the casting shell (11). The upper surface of the lifting base (2) is provided with a lifting disc (21), and the upper surface of the lifting disc (21) is provided with a rotating disc (22). The movement trajectory of the lifting base (2) includes three specified travel intervals. When the lifting base (2) moves within the three specified travel intervals, it drives the rotating disc (22) to rotate around its own axis, drives the lifting disc (21) to move along its own axis, and drives the rotating disc (22) to move along its own axis.

2. The silicone wax mold rapid prototyping mold according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to a second cylinder (41), the telescopic end of the second cylinder (41) is fixedly connected to the top of the inner wall of the lifting base (2), the upper surface of the fixed bracket (12) is fixedly connected to a first cylinder (4), the telescopic end of the first cylinder (4) passes through the fixed bracket (12) and is fixedly connected to the upper surface of the cover (13).

3. The silicone wax mold rapid prototyping mold according to claim 2, characterized in that: The inner wall of the lifting base (2) is fixedly connected to the top of the outer shell (211), the lower surface of the lifting disc (21) is fixedly connected to the inner shell (212), the inner wall of the outer shell (211) is fixedly connected to the lifting slide rail (213), and the inner shell (212) is slidably connected to the outer shell (211) through the lifting slide rail (213).

4. The silicone wax mold rapid prototyping mold according to claim 3, characterized in that: Both sides of the inner shell (212) are fixedly connected with side rods (214). The inner wall of the lifting base (2) is rotatably connected with a first rotating rod (215). The outer circumferential surface of the first rotating rod (215) is fixedly connected with a push handle (216). The outer surface of the push handle (216) is provided with a push hole (2161). The side rod (214) is slidably connected to the push handle (216) through the push hole (2161).

5. A rapid prototyping mold for silicone wax molds according to claim 4, characterized in that: A rotating handle (217) is fixedly connected to the outer circumference of the first rotating rod (215), and an abutment block (218) is fixedly connected to the inner wall of the casting shell (11).

6. The silicone wax mold rapid prototyping mold according to claim 5, characterized in that: A shaft (221) is fixedly connected to the lower surface of the rotating disc (22), and a first bevel gear (222) is fixedly connected to the bottom end of the shaft (221). A second rotating rod (223) is rotatably connected to the inner wall of the lifting base (2), and a second bevel gear (224) is fixedly connected to the outer circumference of the second rotating rod (223). The first bevel gear (222) and the second bevel gear (224) are meshed together.

7. A rapid prototyping mold for silicone wax molds according to claim 6, characterized in that: Both ends of the second rotating rod (223) pass through the side wall of the lifting base (2) and are fixedly connected to the transmission gear (225). Both sides of the casting shell (11) are fixedly connected to the rack (226), and the transmission gear (225) meshes with the rack (226).

8. A rapid prototyping mold for silicone wax molds according to claim 7, characterized in that: The outer circumferential surface of the shaft (221) is fixedly connected to the mounting ring (3), and the outer circumferential surface of the mounting ring (3) is rotatably connected to the lifting ring (31). A connecting rod (311) is fixedly connected between the two lifting rings (31) located in the same inner shell (212).

9. A rapid prototyping mold for silicone wax molds according to claim 8, characterized in that: The lower surface of the lifting ring (31) is fixedly connected to a bottom rod (32), the bottom end of the bottom rod (32) is rotatably connected to a ball (33), the bottom of the inner wall of the inner shell (212) is rotatably connected to a rotating ring (34), and the upper surface of the rotating ring (34) is fixedly connected to a pressing plug (35).

10. A rapid prototyping mold for silicone wax molds according to claim 9, characterized in that: The outer circumferential surface of the rotating ring (34) is rotatably connected to a pulley (36), and the inner wall of the outer shell (211) is provided with a guide slide (37), and the pulley (36) is slidably connected inside the guide slide (37). The guide slide (37) includes a vertical slide (371) and a spiral slide (372), with the top end of the vertical slide (371) connected to the bottom end of the spiral slide (372).

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