Bilateral four-plate precise multifunctional automatic wax injection machine

Abstract

The utility model discloses a double-side four-plate precise multifunctional automatic wax injection machine which comprises a rack, a wax injection device, a mold assembly and a demolding auxiliary device, wherein the wax injection device, the mold assembly and the demolding auxiliary device are arranged on the rack; the wax injection device is arranged above the rack, the mold assembly is arranged under the wax injection device, and the demolding auxiliary device is arranged on the outer side between the wax injection device and the mold assembly. A finished product box is arranged below the mold assembly; the wax injection device comprises a driving device, a funnel and a wax injection assembly which are sequentially arranged from top to bottom, the demolding auxiliary device comprises a positioning frame, a demolding agent tank and a rotary driving device, the demolding agent tank and the rotary driving device are arranged on the positioning frame, and the mold assembly comprises a mold base, a first module and a second module. The first module and the second module are arranged on the mold base side by side. According to the utility model, automatic processing is realized, the working efficiency and the product quality are greatly improved, and the overall structural layout is reasonable. The practicability is high, and the popularization significance is high.

Description

Technical Field

[0001] The utility model relates to a wax injection machine, in particular to a bilateral four-plate precision multi-functional automatic wax injection machine. Background Art

[0002] In the production of precious metal jewelry, it is necessary to form a wax film of a product by injecting wax through a rubber mold, then insert a plurality of wax films on a wax column to obtain a wax film tree, and use the wax film tree to make a gypsum mold. After the gypsum mold is formed, the gypsum mold is heated to melt and discharge the wax film tree, and precious metal is injected into the gypsum mold to form a jewelry tree composed of precious metal, and then the finished jewelry is obtained after subsequent separation, grinding and polishing.

[0003] In the traditional operation mode, generally, a worker holds a wax film by hand and then injects molten wax into the wax film. Although the melting point of wax is relatively low, generally heated to 70°C to 75°C, it is still very easy to cause burns to workers due to contact during operation, and the safety is low. On the other hand, the efficiency of manual operation is also relatively low. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a bilateral four-plate precision multi-functional automatic wax injection machine aiming at the deficiencies in the prior art.

[0005] A bilateral four-plate precision multi-functional automatic wax injection machine includes a frame and a wax injection device, a mold assembly, and a demolding auxiliary device installed on the frame; the wax injection device is arranged above the frame, the mold assembly is arranged directly below the wax injection device, and the demolding auxiliary device is arranged outside between the wax injection device and the mold assembly. A finished product box is arranged below the mold assembly; the wax injection device includes a driving device, a funnel and a wax injection assembly arranged in sequence from top to bottom, and the bottom end of the funnel is connected to the top end of the wax injection assembly; the wax injection assembly includes a main body part and a wax column cover and a wax column heating element arranged at the bottom of the main body part, the wax column cover is installed at the bottom end of the main body part, the wax column heating element is arranged inside the main body part, and a wax nozzle is arranged at the bottom end of the main body part; the demolding auxiliary device includes a positioning frame and a demolding agent tank and a rotation driving device installed on the positioning frame, the positioning frame is pivotally connected to the frame, and the rotation driving device drives the positioning frame to rotate relative to the frame; the mold assembly includes a mold base, a first module and a second module, and the first module and the second module are arranged side by side on the mold base; the mold base is installed on the frame through a guide rail, and both the first module and the second module include a first mold mounting plate, a second mold mounting plate, a mold closing driving device and a top material driving device, the first mold mounting plate and the second mold mounting plate are arranged opposite to each other left and right, a first mold and a second mold are respectively installed on the inner side surfaces of the first mold mounting plate and the second mold mounting plate, forming cavities are arranged on the inner surfaces of the first mold and the second mold, and two forming cavities enclose to form a product mold cavity, and a feeding port communicating with the mold cavity is arranged above.

[0006] Further, a wax column cavity and a hollow material passing area are arranged inside the main body part. A plurality of hollow holes are arranged on the hollow material passing area, and the hollow holes extend in the up-and-down direction.

[0007] Further, the wax column heating part is arranged in a conical shape with a larger upper part and a smaller lower part. A plurality of through holes penetrating up and down are arranged on the wax column heating part, and the plurality of through holes respectively penetrate the bottom end and a part of the inclined outer side surface of the wax column heating part.

[0008] Further, the funnel is arranged in a structure with a larger upper part and a smaller lower part, and a feeding port is arranged on one side thereof. A guiding inclined surface is arranged at the bottom of the feeding port, and the guiding inclined surface extends from the top end to the bottom end; and the feeding port extends out of the outer side of the upper frame.

[0009] Further, the top end of the wax nozzle is movably installed in the middle of the bottom end of the main body part and can move up and down. The bottom end of the wax nozzle extends out of the bottom end of the wax column cover; a plurality of feeding holes are arranged on the peripheral edge of the side wall of the wax nozzle, and a discharging port extending downward is arranged on the bottom surface of the wax nozzle, and the discharging port is communicated with the feeding holes.

[0010] Further, the frame includes a lower frame and an upper frame arranged on the lower frame. A containing cavity is arranged below the lower frame, and an embedding port communicating the containing cavity with the outside is arranged on one side surface of the lower frame. The finished product box is embedded into the containing cavity from one side.

[0011] Further, a blanking hole is arranged on the top surface of the lower frame, and the blanking hole is arranged directly below the first module and the second module.

[0012] Further, at least two guide columns extending up and down are arranged on the upper frame. A bottom plate is arranged on the guide columns, and the demolding assisting device is installed at the bottom of the bottom plate; a top plate is arranged at the top end of the guide column, an installation column is arranged between the top plate and the bottom plate, a mounting plate is installed on the installation column, and a compression spring is arranged between the mounting plate and the bottom plate; the funnel and the wax injection assembly are installed on the mounting plate.

[0013] Further, the positioning frame includes a positioning plate, a baffle plate, a middle limiting frame and a front side plate arranged at the bottom of the positioning plate. A positioning shaft extending forward is arranged on the bottom surface of the bottom plate, the positioning plate is movably installed on the positioning shaft, the middle limiting frame includes two side plates and a first bottom plate, one end of the first bottom plate is pivotally connected to one of the side plates, and the other end is installed on the other side plate through a locking part.

[0014] Further, the locking fastener includes a base, a rotating handle and a hanging buckle. An installation shaft is provided on the base. The rotating handle is installed on the installation shaft and can rotate along the installation shaft. The hanging buckle is arranged in a C shape, and its two free ends are respectively installed on two opposite side surfaces of the rotating handle, and the hanging buckle is installed on one side of the free end of the rotating handle. A hook is provided on one side of the free end of the first bottom plate, and the hook is hung on the hanging buckle.

[0015] In summary, a bilateral four-plate precision multi-functional automatic wax injection machine of the present invention can complete automatic wax injection, molding, mold opening, mold closing and blanking of wax injection by setting a fully automatic wax injection device, a mold assembly and a demolding auxiliary device. Since there is a cooling time during molding, multiple sets of molds can share one wax injection device, thereby further improving work efficiency; and the structural layout of the present invention is reasonable.

[0016] The present invention has strong practicability and has strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of a bilateral four-plate precision multi-functional automatic wax injection machine of the present invention;

[0018] Figure 2 is Figure 1 a partial exploded schematic diagram of the wax injection machine in;

[0019] Figure 3 is Figure 1 a structural schematic diagram of the demolding auxiliary device 40 in;

[0020] Figure 4 is Figure 1 a sectional schematic diagram of the wax injection device in;

[0021] Figure 5 is Figure 4 a structural schematic diagram of the wax injection assembly in;

[0022] Figure 6 is Figure 2 a structural schematic diagram of the mold assembly in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] As Figures 1 to 6As shown in the figure, it is a bilateral four-plate precision multi-functional automatic wax injection machine provided by the present utility model. The bilateral four-plate precision multi-functional automatic wax injection machine includes a frame 10 and a wax injection device 20, a mold assembly 30, and a demolding auxiliary device 40 installed on the frame 10. The wax injection device 20 is arranged above the frame 10, the mold assembly 30 is arranged directly below the wax injection device 20, and the demolding auxiliary device 40 is arranged outside between the wax injection device 20 and the mold assembly 30. In addition, a finished product box 50 is arranged below the frame 10, and the products after wax injection molding directly fall into the finished product box 50.

[0025] The frame 10 includes a lower frame 11 and an upper frame 12 arranged on the lower frame 11. A receiving cavity is arranged below the lower frame 11, and an embedding opening 111 communicating the receiving cavity with the outside is arranged on one side surface of the lower frame 11. The finished product box 50 is embedded into the receiving cavity from one side. A blanking hole 112 is arranged on the top surface of the lower frame 11. In this embodiment, the blanking hole 112 is arranged in a long strip shape. At least two guide columns 121 extending up and down are arranged on the upper frame 12, and a bottom plate 122 is arranged on the guide columns 121. The bottom plate 122 is fixedly installed on the guide columns 121, and its position on the guide columns 121 is adjustable. The demolding auxiliary device 40 is installed at the bottom of the bottom plate 122. The top ends of the guide columns 121 are provided with a top plate 123, and an electric box 60 for supplying power to the device is installed on the top plate 123. An installation column 124 is further arranged between the top plate 123 and the bottom plate 122. An installation plate 125 is installed on the installation column 124, and a compression spring 126 is arranged between the installation plate 125 and the bottom plate 122.

[0026] The wax injection device 20 includes a driving device 21, a funnel 22, and a wax injection assembly 23 arranged in sequence from top to bottom. The driving device 21 is installed on the top plate 123 and extends downward. The bottom end of the driving device 21 extends into the funnel 22. The bottom end of the funnel 22 is connected to the wax injection assembly 23 and is aligned up and down. The wax column is loaded into the wax injection assembly 23 through the funnel 22. The driving device 21 squeezes and pushes the wax column downward from top to bottom to perform wax injection, and at the same time, it can also quickly inject the molten wax downward into the mold assembly 30. In this embodiment, the driving device 21 is a cylinder. A pneumatic rod extending downward to the outside is arranged in the cylinder, and a pushing punch 211 is arranged at the bottom end of the pneumatic rod. The pushing punch 211 extends into the funnel 22. The funnel 22 is arranged in a structure with a large upper part and a small lower part, and a feeding port is arranged on one side of it. A guiding inclined surface 221 is arranged at the bottom of the feeding port, and the guiding inclined surface 221 extends from the top end to the bottom end. And the feeding port extends outside the upper frame 12 to facilitate feeding.

[0027] The wax injection assembly 23 includes a main body 231, a wax column cover 232 and a wax column heating element 233 provided at the bottom of the main body 231. The wax column cover 232 is installed at the bottom end of the main body 231, and the wax column heating element 233 is disposed inside the main body 231. A wax column cavity 234 and a hollow material passing area are provided inside the main body 231. The hollow material passing area is provided with a plurality of hollow holes 235 extending in the vertical direction. In this embodiment, the height of the hollow material passing area is approximately about 1 / 3 of the main body 231. The wax column heating element 233 is provided in a tapered shape with a larger top and a smaller bottom. The wax column heating element 233 is provided with a plurality of through holes 236 penetrating up and down. The plurality of through holes 236 respectively penetrate the bottom end and a part of the inclined outer side surface of the wax column heating element 233.

[0028] A wax nozzle 70 is further provided in the middle of the wax column heating element 233. The bottom end of the wax nozzle 70 extends out of the bottom end of the wax column cover 232. A plurality of feed holes 71 are provided on the peripheral edge of the side wall of the wax nozzle 70. A discharge port 72 extending downward is provided on the bottom surface of the wax nozzle 70. The discharge port 72 is communicated with the feed holes 71. An annular flange 73 is provided above the feed holes 71. The bottom surface of the annular flange 73 contacts the inner top surface of the wax column cover 232. In addition, a positioning hole 237 is provided in the middle of the bottom end of the main body 231. The top end of the wax nozzle 70 is installed in the positioning hole 237. In this embodiment, the hollow material passing area is made of a metal heat-conducting material or other heat-conducting materials. The wax column is introduced into the main body 231 from the guiding inclined surface 221 of the feed port. The wax column heating element 233 generates heat and transfers the heat to the hollow material passing area. The wax column softens and enters the wax column heating element 233 through the hollow holes. The wax column heating element 233 heats the wax to completely melt it into a liquid. The arrangement of the through holes 236 enables the wax to be heated evenly as a whole.

[0029] The demolding assisting device 40 includes a positioning frame 41, a demolding agent tank 42 and a rotation driving device 43 installed on the positioning frame 41. The positioning frame 41 is pivotally connected to the bottom surface of the bottom plate 122. The positioning frame 41 includes a positioning plate 411, a baffle 412, a middle limiting frame 413 and a front side plate 414 provided at the bottom of the positioning plate 411. A positioning shaft 127 extending forward is provided on the bottom surface of the bottom plate 122. A positioning hole is provided at the top of the positioning plate 411. The positioning hole passes through the positioning shaft 127 and can rotate along the positioning shaft. The middle limiting frame 413 includes two side plates and a first bottom plate. One end of the first bottom plate is pivotally connected to one of the side plates, and the other end is installed on the other side plate through a locking member 414.

[0030] The locking fastener 414 includes a base, a rotating handle 416 and a hanging buckle 417. An installation shaft 415 is arranged on the base. The rotating handle 416 is installed on the installation shaft 416 and can rotate along the installation shaft 416. The hanging buckle 417 is arranged in a C shape, and its two free ends are respectively installed on two opposite side surfaces of the rotating handle 416, and the hanging buckle 417 is installed on one side of the free end of the rotating handle 416. One side of the free end of the first bottom plate is provided with a hook 418, and the hook 418 is hung on the hanging buckle 417. During installation, first install the release agent tank 42 on the positioning frame 41, and then rotate and lock the first bottom plate on the side plate.

[0031] A nozzle 421 is arranged below the inner end of the release agent tank 42. The rotation driving device 43 is installed on the outer side surface of the front side plate 414. In this embodiment, the rotation driving device 43 is a cylinder, and a pneumatic rod extends inside the cylinder. The pneumatic rod is connected to one end of the nozzle 421 of the release agent tank 42. During operation, the pneumatic rod of the rotation driving device 43 generates an outward force acting on the release agent tank 42, so that the entire positioning frame 41 rotates along the positioning shaft 127, thereby adjusting the angle of the nozzle 421 for precise spraying.

[0032] The mold assembly 30 includes a mold base 31, a first module 32 and a second module 33. The first module 32 and the second module 33 are arranged side by side on the mold base 31. A guide groove 113 is arranged on the top surface of the lower frame 11, and a guide rail 311 matching therewith is arranged on the bottom surface of the mold base 31. The guide rail 311 is installed in the guide groove 113 and can move left and right along the guide groove. The first module 32 and the second module 33 have basically the same structure, and both include a first mold mounting plate 321, a second mold mounting plate 322, a mold closing drive 323 and a ejecting drive (not shown in the figure). In this embodiment, the mold closing drive 323 is arranged outside the first mold mounting plate 321, and the ejecting drive is arranged outside the second mold mounting plate 322 and can drive the ejector pin to move in the second mold mounting plate 322 toward the first mold mounting plate 321 for...

[0033] The first mold mounting plate 321 and the second mold mounting plate 322 are arranged opposite to each other left and right. The mold closing drive 323 is used to push the first mold mounting plate 321 and the second mold mounting plate 322 to close or open the mold, and the ejecting drive is used to eject the product from the mold cavity. Installation grooves 327 are arranged on the inner side surfaces of the first mold mounting plate 321 and the second mold mounting plate 322. The first mold 334 and the second mold 335 are respectively installed in the installation grooves 327 of the mold mounting plate 321 and the second mold mounting plate 322. Forming cavities 338 are arranged on the inner surfaces of the first mold 334 and the second mold 335. The two forming cavities 338 enclose to form a product mold cavity, and a feed port 336 communicating with the mold cavity is arranged above.

[0034] During operation, the mold base 31 is driven by a driving device to move to the right, so that any one of the feeding ports 336 in the first module 32 or the second module 33 after mold closing is moved directly below the wax nozzle 70. The driving device 21 of the wax injection device 20 pushes the wax injection assembly 23 downward to drive the wax nozzle 70 to move downward until the bottom end of the wax nozzle 70 is aligned with the feeding port 336 of the mold. The wax column cover 232 continues to move downward, while the wax nozzle 70 can no longer move downward because the bottom end is blocked. Then, the position of the annular flange 73 at the inner end of the wax nozzle 70 will be above the inner surface of the wax column cover 232, and the feeding hole 71 on the wax nozzle 70 will be exposed outside the inner bottom surface of the wax column cover 232, so that the wax liquid can enter through the feeding hole 71 and be injected into the mold cavity of the first module 32 or the second module 33 through the feeding port. After the wax injection is completed, the wax injection device 20 moves upward and away. The compression spring 126 rebounds upward, and the bottom of the wax nozzle 70 loses support and moves downward until the annular flange 73 contacts the wax column cover 232, and the feeding hole 71 is blocked by the bottom hole wall of the wax column cover 232.

[0035] Then, the mold base 31 moves horizontally again to move another non-wax-injected mold directly below for wax injection. The previously wax-injected mold is opened after cooling. The product is in the second mold 335, and the ejector drive can drive the ejector pin to extend into the second mold 335 to eject the product from the mold cavity, and then the product falls into the finished product box 70. The demolding auxiliary device 40 can rotate the nozzle to face the first mold 32 or the second mold 33 to spray the demolding agent, so as to improve the demolding efficiency and avoid adhesion.

[0036] In summary, a bilateral four-plate precision multi-functional automatic wax injection machine of the present invention can complete automatic wax injection, molding, mold opening, mold closing and blanking of wax injection by setting a fully automatic wax injection device 20, a mold assembly 30 and a demolding auxiliary device 40. Since there is a cooling time during molding, multiple sets of molds can share one wax injection device 20, thereby further improving the working efficiency; and the structural layout of the present invention is reasonable. The present invention has strong practicability and has strong promotion significance.

[0037] The above embodiments only represent one implementation manner of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A bilateral four-plate precision multifunctional automatic wax injection machine, characterized in that: The invention comprises a frame and a wax injection device, a mold assembly and a demoulding auxiliary device installed on the frame; the wax injection device is arranged above the frame, the mold assembly is arranged directly below the wax injection device, the demoulding auxiliary device is arranged on the outer side between the wax injection device and the mold assembly, and a finished product box is arranged below the mold assembly; the wax injection device comprises a driving device, a funnel and a wax injection assembly arranged in sequence from top to bottom, and the bottom end of the funnel is connected to the top end of the wax injection assembly; the wax injection assembly comprises a main body and a wax column cover and a wax column heating element arranged at the bottom of the main body, the wax column cover is installed at the bottom end of the main body, the wax column heating element is arranged in the main body, and a wax nozzle is arranged at the bottom end of the main body; the demoulding auxiliary device comprises a positioning frame and a demoulding agent tank, a rotary driving device and a wax column heating element installed on the positioning frame The driving device comprises a positioning frame pivotally connected to the frame, and the rotating driving device drives the positioning frame to rotate relative to the frame; the mold assembly comprises a mold base, a first mold group and a second mold group, and the first mold group and the second mold group are installed side by side on the mold base; the mold base is installed on the frame through a guide rail, and the first mold group and the second mold group both comprise a first mold mounting plate, a second mold mounting plate, a mold closing drive and a material ejecting drive, the first mold mounting plate and the second mold mounting plate are arranged opposite to each other on the left and right, and the first mold mounting plate and the second mold mounting plate are respectively installed on the inner side surfaces, and the inner surfaces of the first mold mounting plate and the second mold mounting plate are both provided with molding cavities, and the two molding cavities are enclosed to form a product mold cavity, and a feed port connected to the mold cavity is arranged at the top.

2. A bilateral four-plate precision multifunctional automatic wax injection machine as claimed in claim 1, characterized in that: The inner side of the main body is provided with a wax column cavity and a hollow material transfer area below the wax column cavity. The hollow material transfer area is provided with a plurality of hollow holes extending in an up-and-down direction.

3. A bilateral four-plate precision multifunctional automatic wax injection machine as claimed in claim 1, characterized in that: The wax column heating element is arranged in a cone shape with a larger top and a smaller bottom. The wax column heating element is provided with a plurality of through holes penetrating from top to bottom. The plurality of through holes respectively penetrate the bottom end of the wax column heating element and a part of the inclined outer side surface thereof.

4. The bilateral four-plate precision multifunctional automatic wax injection machine according to claim 1, characterized in that: The funnel is arranged in a structure of upper and lower size, and a feeding port is arranged on one side thereof, a guiding slope is arranged at the bottom of the feeding port, and the guiding slope extends downward from the top to the bottom; and the feeding port extends out of the outer side of the upper frame.

5. The bilateral four-plate precision multifunctional automatic wax injection machine according to claim 1, characterized in that: The top of the wax nozzle is movably mounted in the middle of the bottom of the main body and can move up and down, and the bottom of the wax nozzle extends out of the bottom end of the wax column cover; a plurality of feed holes are arranged on the periphery of the side wall of the wax nozzle, and a discharge port extending downward is arranged on the bottom surface of the wax nozzle, and the discharge port is connected to the feed hole.

6. The bilateral four-plate precision multifunctional automatic wax injection machine according to claim 1, characterized in that: The frame includes a lower frame and an upper frame arranged on the lower frame, a containing cavity is arranged below the lower frame, an embedding opening connecting the containing cavity and the outside is arranged on one side surface of the lower frame, and the finished product box is embedded into the containing cavity from one side.

7. A bilateral four-plate precision multifunctional automatic wax injection machine as claimed in claim 6, characterized in that: The top surface of the lower frame is provided with a material drop hole, and the material drop hole is arranged directly below the first module and the second module.

8. The bilateral four-plate precision multifunctional automatic wax injection machine as claimed in claim 6, characterized in that: At least two guide columns extending up and down are arranged on the upper frame, a bottom plate is arranged on the guide columns, and the demoulding auxiliary device is installed at the bottom of the bottom plate; a top plate is arranged on the top of the guide column, a mounting column is arranged between the top plate and the bottom plate, the mounting column is installed on the mounting plate, and a compression spring is arranged between the mounting plate and the bottom plate; the funnel and the wax injection assembly are installed on the mounting plate.

9. A bilateral four-plate precision multifunctional automatic wax injection machine as claimed in claim 8, characterized in that: The positioning frame includes a positioning plate and a baffle plate arranged at the bottom of the positioning plate, a middle limiting frame, and a front side plate. A positioning shaft extending forward is arranged on the bottom surface of the bottom plate. The positioning plate is movably mounted on the positioning shaft. The middle limiting frame includes two side plates and a first bottom plate. One end of the first bottom plate is pivotally connected to one of the side plates, and the other end is installed on the other side plate through a locking member.

10. The bilateral four-plate precision multifunctional automatic wax injection machine according to claim 9, characterized in that: The locking component includes a base, a rotating handle and a hanging buckle. The base is provided with a mounting shaft. The rotating handle is mounted on the mounting shaft and can rotate along the mounting shaft. The hanging buckle is arranged in a C shape, and its two free ends are respectively mounted on two opposite side surfaces of the rotating handle, and the hanging buckle is mounted on one side of the free end of the rotating handle. A hook is provided on one side of the free end of the first base plate, and the hook is hung on the hanging buckle.

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