A fully automatic wax pressing mold
The fully automatic wax injection mold addresses inefficiencies in traditional methods by automating mold operations, achieving 10 times the production capacity and reducing labor intensity and costs through hydraulic drive systems and ejection assemblies.
Patent Information
- Application Number
- CN202010798827.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-08-10
AI Technical Summary
Traditional wax compression molds in investment casting are labor-intensive, limit production capacity to 600 models per shift, and struggle to meet delivery times for large orders, with manual operation and heavy steel molds leading to high labor intensity and production inefficiencies.
A fully automatic wax injection mold system with a workbench, lower, middle, and upper mold assemblies, featuring hydraulic drive systems and ejection assemblies for automated mold closing, wax injection, and part ejection, enabling high-capacity, efficient production.
The system achieves 10 times the production capacity of manual methods, reduces worker intensity, and lowers production costs by ensuring rapid, high-quality wax part production.
Smart Images
Figure CN111805850B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of investment casting, in particular to a full-automatic wax injection mold. Background Art
[0002] In the field of investment casting, wax model products are usually produced using wax compression molds. Traditional wax compression molds use manual opening and closing of the molds, and air guns to blow out wax parts. Manual labor can only use one-out-of-two molds, and only 600 wax models can be produced per shift. In addition, the molds are made of steel and are heavy, and the labor intensity of workers is relatively high. For orders with a batch size of more than 10,000 pieces, it takes 16 days just to compress the wax, which is seriously unable to meet the delivery time requirements.
[0003] Therefore, the prior art has defects and needs to be improved. Summary of the invention
[0004] The main purpose of the invention is to provide a fully automatic wax pressing mold, aiming to improve the production efficiency of the wax mold and reduce the production cost.
[0005] To achieve the above object, the present invention proposes a fully automatic wax injection mold, which is installed on a wax injection machine. The wax injection machine includes a workbench and a closing mold plate. The wax injection mold includes a lower mold assembly, a middle mold assembly and an upper mold assembly which are arranged in sequence along a vertical direction.
[0006] The lower mold assembly is installed on the workbench, and the lower mold assembly includes a lower mold plate, and the surface of the lower mold plate is provided with a wax injection channel connected to the outside;
[0007] The middle mold assembly includes a middle mold plate and a first lifting drive assembly for driving the middle mold plate to lift and lower. The middle mold plate is provided with a plurality of molding grooves for extruding product wax parts, and the molding grooves are correspondingly connected to the wax injection channel.
[0008] The upper mold assembly is connected to the closing mold plate, and the upper mold assembly includes an upper mold plate, and the lower surface of the upper mold plate corresponds to the upper part of the molding groove;
[0009] It also includes a product wax part ejection assembly for ejecting product wax parts, and a wax channel wax part ejection assembly for ejecting wax channel wax parts;
[0010] The product wax part ejection assembly includes a plurality of ejection rods, the ejection rods pass through the lower template and correspond to the bottom of the molding groove respectively, and the ejection rods are connected to the ejection rod of the wax injection machine;
[0011] The wax part ejection assembly of the wax shooting channel includes a plurality of ejector pins, which pass through the lower template and correspond to the bottom of the wax shooting channel on the surface of the lower template, and the ejector pins are connected to the driving end of the second lifting driving assembly.
[0012] Preferably, the lower mold assembly is mounted on a workbench via a base, and the base is provided with a through hole for passing the ejector rod.
[0013] Preferably, the lower mold assembly is further provided with four guide columns arranged in a matrix shape, and the guide columns are respectively penetrated through the middle mold plate and the upper mold plate.
[0014] Preferably, the first lifting drive assembly is configured as a plurality of first drive cylinders, and the drive ends of the plurality of first drive cylinders are connected to the middle template.
[0015] Preferably, the upper mold plate is connected to the closing mold plate via a fixing plate, and the closing mold plate is connected to the hydraulic drive system of the wax injector.
[0016] Preferably, the middle template and the upper template are respectively provided with coolant channels inside, and the sides of the middle template and the upper template are respectively provided with coolant inlets and coolant outlets.
[0017] Preferably, a top mold ejection plate is connected below the ejection rod, the ejection rod passes through the through hole and is connected to the top mold ejection plate, and the ejection rod is connected to the hydraulic drive system of the wax injection machine.
[0018] Preferably, the second lifting drive assembly is configured as a plurality of second drive cylinders, the lower mold assembly is provided with a mounting plate for mounting the second drive cylinder, the driving end of the second drive cylinder passes through the mounting plate to connect to an ejector plate, the ejector plate is movably mounted on the ejector rod, and the ejector is mounted on the ejector plate.
[0019] Preferably, it also includes a handle control valve respectively connected to the first lifting drive assembly and the second lifting drive assembly.
[0020] Compared with the prior art, the beneficial effects of the present invention are: it realizes the fully automatic production of wax injection molds, the production capacity is 10 times that of traditional manual production capacity, and the operation intensity of workers is greatly reduced, the product quality is good, and there is no need to repair wax parts, which greatly reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0022] Figure 1 This is a schematic diagram of the overall structure of the wax injection mold of the present invention;
[0023] Figure 2 This is a schematic diagram of the structure of the lower mold assembly of the present invention;
[0024] Figure 3 This is a schematic diagram of the ejection structure of the wax part of the product of the present invention;
[0025] Figure 4 It is a schematic diagram of the wax ejection structure of the wax injection channel of the present invention;
[0026] Figure 5 It is a structural schematic diagram of the connection between the wax injection channel and the molding groove of the present invention;
[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0028] A fully automatic wax pressing mold proposed in this embodiment, referring to Figures 1 to 4 The wax injection mold is installed on a wax injection machine (not shown in the figure), the wax injection machine includes a workbench and a closing mold plate, and the wax injection mold includes a lower mold assembly, a middle mold assembly and an upper mold assembly arranged in sequence along the vertical direction;
[0029] The lower mold assembly is installed on the workbench, and the lower mold assembly includes a lower mold plate 11, and a wax injection channel 12 communicating with the outside is provided on the surface of the lower mold plate 11;
[0030] The middle mold assembly includes a middle mold plate 21 and a first lifting drive assembly 22 for driving the middle mold plate 21 to lift and lower. The middle mold plate 21 is provided with a plurality of molding grooves 23 for extruding product wax parts, and the molding grooves 23 are correspondingly connected to the wax injection channel 12;
[0031] The upper mold assembly is connected to the closing mold plate, and the upper mold assembly includes an upper mold plate 31, and the lower surface of the upper mold plate 31 corresponds to the upper part of the molding groove 23;
[0032] It also includes a product wax part ejection assembly for ejecting product wax parts, and a wax channel wax part ejection assembly for ejecting wax channel wax parts;
[0033] The product wax part ejection assembly includes a plurality of ejection rods 41, the ejection rods 41 pass through the lower mold plate 11 and correspond to the bottom of the molding groove 23 respectively, and the ejection rods 41 are connected to the ejection rod of the wax injection machine;
[0034] The wax part ejection assembly of the wax shooting channel includes a plurality of ejector pins 51 , which pass through the lower template 11 and correspond to the bottom of the wax shooting channel 12 on its surface, and the ejector pins 51 are connected to the driving end of the second lifting driving assembly 52 .
[0035] Furthermore, the lower mold assembly is mounted on the workbench via a base 13 , and the base 13 is provided with a through hole 14 for passing the ejector rod.
[0036] Furthermore, the lower mold assembly is also provided with four guide columns 15 arranged in a matrix shape, and the guide columns 15 are respectively penetrated through the middle mold plate 21 and the upper mold plate 31. The middle mold plate 21 and the upper mold plate 31 can be lifted and lowered along the guide columns 15 to ensure the stability of the lifting process and the coaxiality of the installation between the upper mold plate 31, the middle mold plate 21 and the lower mold plate 11.
[0037] Further, the first lifting drive assembly 22 is configured as a plurality of first driving cylinders, and the driving ends of the plurality of first driving cylinders are connected to the middle template 21. In this embodiment, two first driving cylinders are configured, and the two first driving cylinders are disposed at two diagonal ends of the middle template 21, so as to ensure the uniformity of the force of the middle template 21 and improve the stability of its lifting.
[0038] Furthermore, the upper mold plate 31 is connected to the closing mold plate through a fixing plate 32, and the closing mold plate is connected to the hydraulic drive system of the wax injection machine.
[0039] Furthermore, the middle template 21 and the upper template 31 are respectively provided with cooling liquid channels therein, and the sides of the middle template 21 and the upper template 31 are respectively provided with cooling liquid inlet 33 and cooling liquid outlet 34 .
[0040] Furthermore, a top mold ejection plate 42 is connected below the ejection rod 41, the ejection rod passes through the through hole 14 and is connected to the top mold ejection plate 42, and the ejection rod is connected to the hydraulic drive system of the wax injection machine.
[0041] Furthermore, the second lifting drive assembly 52 is configured as a plurality of second driving cylinders, and a mounting plate 53 for mounting the second driving cylinder is provided on the lower mold assembly, and the driving end of the second driving cylinder passes through the mounting plate 53 to connect an ejector plate 54, the ejector plate 54 is movably arranged on the ejector rod 41, and the ejector 51 is mounted on the ejector plate 54. In this embodiment, the number of the second driving cylinders is set to two, so as to ensure that the ejector plate 54 is stably stressed, and the lifting process of the ejector 51 is stable, so as to facilitate the rapid and accurate ejection of the wax parts of the wax injection path.
[0042] Specifically, during installation, the wax injection mold is carried to the workbench of the wax injection machine, so that the through hole 14 on the base 13 corresponds to the ejector rod, and then the base 13 is screwed and fixed on the workbench, and the ejector rod is connected to the ejector plate 42 of the top mold, and the top mold rod is driven to rise and fall by the hydraulic system of the wax injection machine, thereby driving the ejector plate 42 and the ejector rod 41 to rise and fall in turn, and the wax parts of the product are ejected. The upper mold plate 31 is connected to the film pressing plate of the wax injection machine through the fixed plate 32, and the film pressing plate is driven to rise and fall by the hydraulic system of the wax injection machine, thereby driving the fixed plate 32 and the upper mold plate 31 to rise and fall in turn, and the mold opening and closing between the upper mold plate 31 and the middle mold plate 21 are realized. The coolant inlet 33 and the coolant outlet 34 on the upper mold plate 31 and the middle mold plate 21 are connected to the cooling water system of the wax injection machine, so that the mold is always kept in a cooling state and the working temperature of the mold is reduced.
[0043] Before wax pressing, a release agent is sprayed between the upper template 31 and the middle template 21, and between the middle template 21 and the lower template 11, and then the first lifting drive assembly 22 drives the middle template 21 to press the lower template 11, and the fixed plate 32 drives the upper template 31 to descend and press the middle template 21, so that the upper template 31, the middle template 21 and the lower template 11 are pressed together to complete the mold closing, and then wax is injected to fill the molding groove 23 through the wax injection channel 12. After holding the pressure for three seconds, the mold is opened; the fixed plate 32 drives the upper template 31 to rise, the upper template 31 is separated from the middle template 21, and the top mold rod drives the top mold ejection plate 42 and the ejection rod 41 is lifted up to eject the product wax part from the molding groove 23, and then the product wax part is manually taken out, and the ejector rod returns to the initial position; the first lifting drive component 22 drives the middle template 21 to lift up, and the middle template 21 is separated from the lower template 11. The second lifting drive component 52 drives the ejector plate 54 and the ejector 51 to lift up in turn, and the wax part in the wax injection path 12 is ejected. After it is manually taken out, the ejector 51 is driven back to the initial position, and the product wax part is made. Then, the middle template 21 and the lower template 11 are pressed together, and the upper template 31 and the middle template 21 are pressed together, and then they return to the initial position to complete a cycle. Repeating the above process can realize the automatic production of product wax parts. At the same time, in this embodiment, reference Figure 5 The connection between the molding groove 23 and the wax injection channel 12 is half of a circle, which ensures the molding of the product wax parts and enables the wax injection machine ejector rod to break the wax parts and the inner gate when ejecting the wax parts.
[0044] It should be noted that the release agent is sprayed after 4 to 6 cycles. Furthermore, a handle control valve 6 connected to the first lifting drive assembly 22 and the second lifting drive assembly 52 is included. The operator can manually control the extension and retraction of the driving ends of the first lifting drive assembly 22 and the second lifting drive assembly 52, thereby manually controlling the lifting and lowering of the middle template 21 and the ejector pin 51.
[0045] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A fully automatic wax pressing mold, the wax pressing mold is installed on a wax pressing machine, the wax pressing machine includes a workbench and a mold plate, characterized in that: The wax injection mold comprises a lower mold assembly, a middle mold assembly and an upper mold assembly which are arranged in sequence along the vertical direction; The lower mold assembly is installed on the workbench, and the lower mold assembly includes a lower mold plate, and the surface of the lower mold plate is provided with a wax injection channel connected to the outside; The middle mold assembly includes a middle mold plate and a first lifting drive assembly for driving the middle mold plate to lift and lower. The middle mold plate is provided with a plurality of molding grooves for extruding product wax parts. The molding grooves are correspondingly connected to the wax injection path. The connection between the molding grooves and the wax injection path is half of a circle. The upper mold assembly is connected to the closing mold plate, and the upper mold assembly includes an upper mold plate, and the lower surface of the upper mold plate corresponds to the upper part of the molding groove; It also includes a product wax part ejection assembly for ejecting product wax parts, and a wax channel wax part ejection assembly for ejecting wax channel wax parts; The product wax part ejection assembly includes a plurality of ejection rods, the ejection rods pass through the lower template and correspond to the bottom of the molding groove respectively, and the ejection rods are connected to the ejection rod of the wax injection machine; The wax part ejection assembly of the wax shooting channel includes a plurality of ejector pins, which pass through the lower template and correspond to the bottom of the wax shooting channel on the surface of the lower template, and the ejector pins are connected to the driving end of the second lifting driving assembly.
2. The fully automatic wax injection mold according to claim 1, characterized in that: The lower mold assembly is installed on the workbench through a base, and a through hole for passing the top mold rod is opened on the base.
3. The fully automatic wax injection mold according to claim 2, characterized in that: The lower mold assembly is also provided with four guide columns arranged in a matrix shape, and the guide columns are respectively penetrated through the middle mold plate and the upper mold plate.
4. The fully automatic wax injection mold according to claim 1, characterized in that: The first lifting drive assembly is configured as a plurality of first drive cylinders, and the drive ends of the plurality of first drive cylinders are connected to the middle template.
5. The fully automatic wax injection mold according to claim 1, characterized in that: The upper part of the upper mold plate is connected to the closing mold plate through a fixing plate, and the closing mold plate is connected to the hydraulic driving system of the wax injection machine.
6. The fully automatic wax injection mold according to claim 1, characterized in that: The middle template and the upper template are respectively provided with cooling liquid channels inside, and the sides of the middle template and the upper template are respectively provided with cooling liquid inlet and cooling liquid outlet.
7. The fully automatic wax injection mold according to claim 2, characterized in that: A top mold ejection plate is connected below the ejection rod, the ejection rod passes through the through hole and is connected to the top mold ejection plate, and the ejection rod is connected to the hydraulic drive system of the wax injection machine.
8. The fully automatic wax injection mold according to claim 1, characterized in that: The second lifting drive assembly is configured as a plurality of second drive cylinders, the lower mold assembly is provided with a mounting plate for mounting the second drive cylinders, the driving end of the second drive cylinder passes through the mounting plate to connect with an ejector plate, the ejector plate is movably mounted on the ejector rod, and the ejector is mounted on the ejector plate.
9. The fully automatic wax injection mold according to any one of claims 1 to 8, characterized in that: It also includes a handle control valve connected to the first lifting drive assembly and the second lifting drive assembly respectively.