A hot press forming machine with high product precision

Abstract

The application belongs to the technical field of hot-pressing casting forming processing equipment, and particularly relates to a hot-pressing forming machine with high product precision, which comprises a box body, the box body is fixedly installed on the top of a carrier, a forming assembly is installed on one side of the top of the carrier, a spiral feeding assembly is fixedly installed through a side wall of the carrier, and a discharging assembly is further installed on the other side of the top of the carrier and used for discharging a material head and a finished product. The application discards a traditional high-pressure gas injection feeding mode, adopts a spiral conveying screw rod to mechanically push molten material, and does not involve high-pressure air in the whole material conveying process, so that air is not wrapped and carried into a mold cavity, and from the root, internal pores, sand holes, cavities and other defects of castings are eliminated, and the product yield is greatly improved. Meanwhile, the screw rod uniformly extrudes and fills the cavity, the material continuously and densely fills in the pressure maintaining stage, the internal organization of the castings is compact and uniform, and the appearance and internal quality of the products in batch production are highly unified.

Description

Technical Field

[0001] This invention relates to the field of hot press casting equipment technology, specifically a hot press forming machine with high product precision. Background Technology

[0002] Hot die casting, with its advantages of fast forming speed, high surface finish, and suitability for mass production of small parts, is widely used in the mass production of special ceramics, precision hardware, and electronic components. The core principle of hot die casting is to fill a closed mold cavity with molten wax-based slurry / metal melt under external force, and after pressure holding, cooling, and solidification, demold to obtain a blank. The feeding and conveying structure and the mold frame guiding and bearing structure of the equipment directly determine the casting yield, dimensional accuracy, and overall machine lifespan. Existing hot die casting equipment of the same type all use high-pressure gas purging and injection to force molten material into the mold cavity. During the material pushing process, the high-pressure gas is very likely to carry air into the mold cavity. After solidification, a large number of air bubbles will form inside the product, resulting in defects such as air holes and sand holes, which will significantly reduce the product qualification rate. At the same time, the high-pressure gas cannot accurately control the volume of material injected into the mold each time, and the deviation of the feeding amount each time is large. This can lead to insufficient material and non-compliant dimensions, or even excessive material overflowing from the mold, resulting in serious waste of raw materials and extremely poor quality stability in mass production.

[0003] Therefore, a new technical solution needs to be designed to address this issue. Summary of the Invention

[0004] The purpose of this invention is to provide a hot press forming machine with high product precision, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-precision hot press molding machine, comprising a housing, the housing being fixedly installed on the top of a carrier frame, a molding component being installed on one side of the top of the carrier frame, a spiral feeding component being fixedly installed through one side wall of the carrier frame, and a discharge component being installed on the other side of the top of the carrier frame for discharging the material head and the finished product.

[0006] By adopting the above technical solution, the material is first continuously introduced into the molding component through the spiral feeding component, and then the product is shaped by the molding component. After molding, the material head is unloaded first by the unloading component, and then the product is unloaded. This eliminates the traditional high-pressure gas injection feeding mode and uses a spiral conveyor screw to mechanically push the molten material. No high-pressure air is involved in the material conveying process, and air will not be carried into the mold cavity. This eliminates defects such as air holes, sand holes, and voids inside the casting from the root, and greatly improves the product yield. At the same time, the screw extrudes and fills the cavity at a uniform speed, and the material is continuously and densely filled during the pressure holding stage. The internal structure of the casting is dense and uniform, and the appearance and internal quality of the mass-produced products are highly consistent.

[0007] In a preferred embodiment of the present invention, the molding assembly includes a carrier plate. An electric cylinder is fixedly installed on the top of the carrier plate. The push rod of the electric cylinder movably passes through the carrier plate and is fixedly connected to a movable plate. An upper template is provided on the lower side of the movable plate, and a lower template is provided on the lower side of the upper template. A first cylinder is fixedly installed on both sides of the top of the upper template. The upper outer wall of the first cylinder is fixedly connected to the movable plate. The push rod of the first cylinder movably passes through the upper template and is fixedly connected to the lower template. A bottom plate is fixed on the lower side of the lower template. The bottom plate is fixed to the top of the carrier frame. Guide rods are fixed at the four corners of the bottom of the carrier plate. The guide rods movably pass through the movable plate, the upper template, and the lower template and are fixedly connected to the bottom plate. A second cylinder is fixed on both sides of the top of the movable plate, and a third cylinder is fixedly installed on one side of the top of the upper template.

[0008] By adopting the above technical solution, the upper and lower molds for product forming are first installed on the upper and lower templates respectively. The feeding nozzle of the spiral feeding assembly is installed through the base plate and aligned with the lower mold. The material removal head structure on the upper mold is connected to the third cylinder, and the material removal pusher is connected to the second cylinder. In use, the first cylinder drives the lower and upper templates to close. Then, the electric cylinder drives the movable plate and the upper and lower templates to descend and press against the feeding nozzle on the base plate. The spiral feeding assembly continuously feeds material into the mold. After feeding, the pressure is maintained for a certain period of time. Then, the electric cylinder drives the upper and lower templates to rise to a certain height, and the third cylinder drives the corresponding material removal head structure to push the material head to discharge. The unloading assembly receives the material head. Then, the closed mold is raised again. Then, the first cylinder pushes the lower template to descend, and the second cylinder drives the material removal mechanism to push the formed product to discharge. Finally, the unloading assembly receives the product.

[0009] In a preferred embodiment of the present invention, the top of the movable plate, the upper template and the lower template are provided with through holes corresponding to the guide rods, and a copper sleeve is fixed in the through hole. The copper sleeve is movably fitted onto the outer wall of the guide rod.

[0010] By adopting the above technical solution, the traditional linear motion bearing of the mold frame moving pair is replaced with a copper sleeve sliding guide structure. The copper sleeve and the equipment column have a large-area surface contact sliding fit. Compared with the ball point contact linear bearing, the overall load-bearing capacity is significantly improved, and it can withstand the alternating pressure of large-tonnage mold closing and injection. The copper sleeve has excellent wear resistance, and the fit clearance changes very little after long-term reciprocating lifting and lowering operation. There is no offset or shaking when the upper and lower mold plates are raised and lowered, the mold closing alignment accuracy is stable, and the dimensional tolerance control accuracy of castings is higher. It effectively solves the problems of accuracy decay and product dimensional deviation in the later stage of traditional equipment.

[0011] In a preferred embodiment of the present invention, the spiral feeding assembly includes a spiral feeding pipe, an auger is rotatably installed in the inner cavity of the spiral feeding pipe, a material bin is fixedly connected to one end of the spiral feeding pipe, and the other end of the spiral feeding pipe is connected to a feeding nozzle through a conduit, the feeding nozzle being fixedly fixed to the base plate.

[0012] By adopting the above technical solution, a drive motor is connected to the outer end of the auger in actual use, which can drive the auger to rotate, thereby enabling the material to be pushed to move, so that the material enters the feeding nozzle, and then enters the mold cavity of the forming mold through the feeding nozzle.

[0013] In a preferred embodiment of the present invention, an agitator motor is fixedly installed on the top of the silo, and the drive shaft of the agitator motor movably passes through the top of the silo and is fixedly connected to an agitator blade. In actual use, the agitator motor drives the agitator blade to agitate the material in the silo, thereby preventing material sedimentation, ensuring uniform mixing, and thus ensuring the quality of the material after feeding.

[0014] In a preferred embodiment of the present invention, the unloading assembly includes a frame, on which a carrier block is fixedly installed both above and below the inner cavity. An electric push rod is fixedly installed on one side wall of the carrier block, and the push rod of the electric push rod moves through the carrier block and is fixedly connected to a receiving tray.

[0015] By adopting the above technical solution, when receiving the material head, the receiving tray is moved to the material head unloading point by the electric push rod located on the lower side. Similarly, when receiving products, the receiving tray on the upper side is moved to the designated position for receiving.

[0016] In a preferred embodiment of the present invention, the four corners of the bottom of the carrier are fixed with legs, and rubber sleeves are fitted on the legs.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention abandons the traditional high-pressure gas injection feeding mode and adopts a screw conveyor to mechanically push molten material. No high-pressure air is involved in the material transportation process, and air will not be carried into the mold cavity. This eliminates defects such as air holes, sand holes, and voids inside the casting from the root, and greatly improves the product yield. At the same time, the screw extrudes and fills the cavity at a uniform speed, and the material continues to fill densely during the pressure holding stage. The internal structure of the casting is dense and uniform, and the appearance and internal quality of mass-produced products are highly consistent. The screw conveyor mechanism, driven by a servo motor, can precisely control the volume of material conveyed per batch by setting the number of rotations and the speed of the motor. It can match the corresponding feeding amount according to different mold specifications and product sizes, avoiding problems such as insufficient feeding leading to material shortages or smaller sizes, as well as excessive material overflowing from the mold and wasting material. Excess forming material heads can be recycled and melted for reuse, doubly reducing raw material consumption and lowering enterprise production costs. The traditional linear motion bearings of the mold frame moving pair are replaced with a copper sleeve sliding guide structure. The copper sleeve and the equipment column have a large-area surface contact sliding fit. Compared with the ball point contact linear bearing, the overall load-bearing capacity is significantly improved, and it can withstand the alternating pressure of large-tonnage mold closing and injection. The copper sleeve has excellent wear resistance, and the fit clearance changes very little after long-term reciprocating lifting and lowering operation. There is no offset or shaking when the upper and lower mold plates are raised and lowered, the mold closing alignment accuracy is stable, and the dimensional tolerance control of castings is more accurate. It effectively solves the problems of accuracy decay and product dimensional deviation in the later stage of traditional equipment. Attached Figure Description

[0018] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a high-precision hot press forming machine according to the present invention; Figure 2 This is a side view of a high-precision hot press forming machine according to the present invention. Figure 3 This is a front view structural diagram of a high-precision hot press forming machine according to the present invention; Figure 4 This is a front cross-sectional view of a high-precision hot press forming machine according to the present invention. Figure 5 This is a system operation diagram of a high-precision hot press molding machine according to the present invention.

[0019] In the picture: 1. Box body; 11. Carrier frame; 2. Spiral feed pipe; 21. Hopper; 22. Agitator motor; 3. Carrier plate; 31. Electric cylinder; 32. Movable plate; 33. Upper template; 34. Lower template; 35. Base plate; 36. First cylinder; 37. Second cylinder; 38. Third cylinder; 4. Frame; 41. Carrier block; 42. Receiving tray; 43. Electric actuator. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The model numbers of the electrical appliances provided in this invention are for reference only, and different models of electrical appliances with the same function can be replaced according to actual usage.

[0023] Please see Figure 1-5 The present invention provides a technical solution: a hot press forming machine with high product precision, including a housing 1, the housing 1 being fixedly installed on the top of a carrier 11, a forming component being installed on one side of the top of the carrier 11, a spiral feeding component being fixedly installed through one side wall of the carrier 11, and a discharge component being installed on the other side of the top of the carrier 11 for discharging the material head and the finished product.

[0024] It should be understood that in actual use, the material is first continuously introduced into the molding component through the screw feeding assembly, and then the molding component is used to shape the product. After molding, the unloading assembly can first unload the material head, and then unload the product. This eliminates the traditional high-pressure gas injection feeding mode and uses a screw conveyor to mechanically push the molten material. No high-pressure air is involved in the material conveying process, and air will not be carried into the mold cavity. This eliminates defects such as air holes, sand holes, and voids inside the casting from the root, and greatly improves the product yield. At the same time, the screw extrudes and fills the cavity at a uniform speed, and the material continues to fill densely during the pressure holding stage. The internal structure of the casting is dense and uniform, and the appearance and internal quality of the mass-produced products are highly consistent.

[0025] Furthermore, the four corners of the bottom of the carrier 11 are fixed with feet, and rubber sleeves are fitted on the feet to support the whole device and ensure the overall stability of the device.

[0026] like Figure 2 and Figure 4 As shown, the molding assembly includes a carrier plate 3. An electric cylinder 31 is fixedly installed on the top of the carrier plate 3. The push rod of the electric cylinder 31 moves through the carrier plate 3 and is fixedly connected to a movable plate 32. An upper template 33 is provided on the lower side of the movable plate 32. A lower template 34 is provided on the lower side of the upper template 33. A first cylinder 36 is fixedly installed on both sides of the top of the upper template 33. The upper side of the outer wall of the first cylinder 36 is fixedly connected to the movable plate 32. The push rod of the first cylinder 36 moves through the upper template 33 and is fixedly connected to the lower template 34. A bottom plate 35 is fixed on the lower side of the lower template 34. The bottom plate 35 is fixed to the top of the carrier frame 11. Guide rods are fixed at the four corners of the bottom of the carrier plate 3. The guide rods move through the movable plate 32, the upper template 33, and the lower template 34 and are fixedly connected to the bottom plate 35. A second cylinder 37 is fixed on both sides of the top of the movable plate 32. A third cylinder 38 is fixedly installed on one side of the top of the upper template 33. It should be understood that in actual use, the upper and lower molds used for product forming are first installed on the upper template 33 and lower template 34 respectively. The feeding nozzle of the spiral feeding assembly is installed through the base plate 35 and aligned with the lower mold. The material removal head structure on the upper mold is connected to the third cylinder 38, and the material removal pusher is connected to the second cylinder 37. Then, in use, the first cylinder 36 is used to drive the lower template 34 and the upper template 33 to close. Then, the electric cylinder 31 is used to drive the movable plate 32 and the upper template 33 and lower template 34 to descend and press against the base plate 35. The material is fed into the mold through the feeding nozzle. After feeding, the material is held under pressure for a certain period of time. Then, the electric cylinder 31 lifts the upper mold plate 33 and the lower mold plate 34 to a certain height. The third cylinder 38 drives the corresponding unloading head structure to push the material head to unload the material. The unloading component receives the material head. Then, the closed mold is lifted again. Then, the first cylinder 36 pushes the lower mold plate 34 down. Then, the second cylinder 37 drives the unloading mechanism to push the formed product to unload the material. Finally, the unloading component receives the product.

[0027] Furthermore, through holes are provided at the top of the movable plate 32, the upper template 33, and the lower template 34 corresponding to the guide rods. Copper sleeves are fixed in the through holes and are movably fitted onto the outer wall of the guide rods. The traditional linear motion bearings of the mold frame motion pair are replaced with a copper sleeve sliding guide structure. The copper sleeves and the equipment columns have a large-area surface contact sliding fit. Compared with the ball point contact linear bearings, the overall load-bearing capacity is significantly improved, and it can withstand large-tonnage mold closing and injection alternating pressure. The copper sleeves have excellent wear resistance, and the fit clearance changes very little after long-term reciprocating lifting and lowering operation. The upper and lower templates rise and fall without offset or shaking, the mold closing alignment accuracy is stable, and the casting dimensional tolerance control accuracy is higher. This effectively solves the problems of precision decay and product dimensional deviation in the later stage of traditional equipment.

[0028] like Figure 1 and 3 As shown, the spiral feeding assembly includes a spiral feeding pipe 2, with an auger rotatably installed inside the spiral feeding pipe 2. One end of the spiral feeding pipe 2 is fixedly connected to a material bin 21, and the other end of the spiral feeding pipe 2 is connected to a feeding nozzle through a conduit. The feeding nozzle is fixedly mounted on the base plate 35. It should be understood that in actual use, the outer end of the auger is connected to a drive motor, which drives the auger to rotate, thereby enabling the material to be pushed and moved, so that the material enters the feeding nozzle and then enters the mold cavity of the forming mold along the feeding nozzle.

[0029] Furthermore, an agitator motor 22 is fixed to the top of the hopper 21. The drive shaft of the agitator motor 22 passes through the top of the hopper 21 and is fixedly connected to an agitator blade. It should be understood that in actual use, the agitator motor 22 drives the agitator blade to agitate the material in the hopper 21, thereby preventing material sedimentation, ensuring uniform mixing, and thus ensuring the quality of the material after feeding.

[0030] like Figure 2 and Figure 5 As shown, the unloading assembly includes a frame 4. The frame 4 is fixedly installed with a carrier block 41 on both the upper and lower sides of the inner cavity. An electric push rod 43 is fixedly installed on one side wall of the carrier block 41. The push rod of the electric push rod 43 moves through the carrier block 41 and is fixedly connected to a receiving tray 42. It should be understood that when receiving the material head, the receiving tray 42 is moved to the material head unloading position by pushing the electric push rod 43 located on the lower side. Similarly, when receiving products, the receiving tray 42 on the upper side is moved to the designated position for receiving.

[0031] Furthermore, limit rods are fixed on both sides of one side wall of the receiving tray 42. The limit rods move through the carrier block 41. The setting of the limit rods makes the movement of the receiving tray 42 driven by the electric push rod 43 highly stable.

[0032] The working principle is as follows: During operation, the entire equipment is stably supported by the four corner supports and rubber sleeves at the bottom of the frame 11. First, the stirring motor 22 at the top of the hopper 21 drives the stirring blades to continuously stir the material, preventing material sedimentation and ensuring uniform mixing. Then, the auger inside the spiral feeding pipe 2 rotates under the drive motor, pushing the molten material at a uniform speed. It is then fed into the mold cavity through the guide tube and the feeding nozzle on the bottom plate 35. This abandons the traditional high-pressure gas injection feeding mode, eliminating the need for high-pressure air to be carried into the mold, thus preventing defects such as porosity and sand holes in the casting from the source. Before the molding operation, the upper template 33 and the lower template 34 are respectively equipped with matching molding molds. The upper mold's material removal head structure is connected to the third cylinder 38, and the material pushing component is connected to the second cylinder 37. During operation, the first cylinder 36 first drives the upper template 33 and the lower template 34 to close. The electric cylinder 31 drives the movable plate 32 to lower the closed mold as a whole, pressing it against the material feeding nozzle position on the bottom plate 35. After the mold is sealed, the material is continuously fed and pressure is maintained. The cavity is densely filled by the screw extruding material at a uniform speed, ensuring that the internal structure of the casting is uniform and dense. After the pressure holding is completed, the electric cylinder 31 drives the entire mold to rise to a specified height, and the third cylinder 38 drives the material removal head structure to push out the material head. The electric push rod 43 corresponding to the lower support block 41 inside the frame 4 pushes the receiving plate 42 forward to receive the material head. The limit rod ensures the stability of the receiving plate 42. After the material head is unloaded, the mold continues to rise. The first cylinder 36 drives the lower template 34 to descend and open the mold. The second cylinder 37 drives the unloading mechanism to push out the molded finished product. The electric push rod 43 corresponding to the upper support block 41 drives the upper receiving plate 42 forward to receive the finished product, completing a single die casting operation. During the operation of the equipment, copper sleeves are installed in the guide rod through holes of the upper template 33 and lower template 34 of the movable plate 32, replacing the traditional linear bearings to form a surface contact sliding guide structure. This greatly improves the load-bearing capacity and operational stability of the equipment, eliminates template offset and shaking, stabilizes the mold closing and alignment accuracy, effectively avoids the problem of accuracy decay and product size deviation after long-term operation of the equipment, and ensures the uniformity of product quality in mass production.

[0033] Furthermore, the components of the high-precision hot pressing molding machine of this invention are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the matching monitoring computer and power supply, are connected by wires. The electrical connection between each electrical component is completed in the order of operation. The detailed connection method is a well-known technology in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision hot press forming machine, comprising a housing (1), characterized in that: The box (1) is fixedly installed on the top of the carrier (11). A forming component is installed on one side of the top of the carrier (11). A spiral feeding component is fixedly installed through one side wall of the carrier (11). A unloading component is also installed on the other side of the top of the carrier (11) for unloading the material head and the finished product.

2. The high-precision hot press forming machine according to claim 1, characterized in that: The molding assembly includes a carrier plate (3). An electric cylinder (31) is fixedly installed on the top of the carrier plate (3). The push rod of the electric cylinder (31) moves through the carrier plate (3) and is fixedly connected to a movable plate (32). An upper template (33) is provided on the lower side of the movable plate (32). A lower template (34) is provided on the lower side of the upper template (33). A first cylinder (36) is fixedly installed on both sides of the top of the upper template (33). The upper side of the outer wall of the first cylinder (36) is fixedly connected to the movable plate (32). The push rod of the first cylinder (36) moves... The upper template (33) is fixedly connected to the lower template (34). The lower template (34) is fixed with a base plate (35) on its lower side. The base plate (35) is fixed to the top of the carrier frame (11). The four corners of the bottom of the carrier plate (3) are fixed with guide rods. The guide rods are movably connected through the movable plate (32), the upper template (33), and the lower template (34) and are fixedly connected to the base plate (35). The top two sides of the movable plate (32) are fixed with second cylinders (37). The top side of the upper template (33) is fixed with a third cylinder (38).

3. The high-precision hot pressing molding machine according to claim 2, characterized in that: The top of the movable plate (32), the upper template (33) and the lower template (34) are provided with through holes corresponding to the guide rods. A copper sleeve is fixed in the through hole and is movably fitted onto the outer wall of the guide rod.

4. The high-precision hot pressing molding machine according to claim 2, characterized in that: The spiral feeding assembly includes a spiral feeding pipe (2), an auger is rotatably installed in the inner cavity of the spiral feeding pipe (2), a material bin (21) is fixedly connected to one end of the spiral feeding pipe (2), and the other end of the spiral feeding pipe (2) is connected to the feeding nozzle through a conduit, and the feeding nozzle is fixed to the bottom plate (35) through the conduit.

5. A high-precision hot press forming machine according to claim 4, characterized in that: The top of the hopper (21) is fixed with an agitator motor (22), and the drive shaft of the agitator motor (22) moves through the top of the hopper (21) and is fixedly connected with agitator blades.

6. The high-precision hot press forming machine according to claim 1, characterized in that: The unloading assembly includes a frame (4), which is fixedly installed with a carrier block (41) on both the upper and lower sides of the inner cavity. An electric push rod (43) is fixedly installed on one side wall of the carrier block (41). The push rod of the electric push rod (43) moves through the carrier block (41) and is fixedly connected to a receiving tray (42).

7. A high-precision hot press forming machine according to claim 1, characterized in that: The support frame (11) is fixed with legs at the four corners of its bottom, and rubber sleeves are fitted on the legs.

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