Dustproof vacuum copying machine

Abstract

The invention discloses a dustproof vacuum copying machine which comprises a copying machine body provided with an upper vacuum chamber and a lower vacuum chamber. The sealing frame is arranged on the inner side wall of the upper vacuum chamber in an attached mode, the mounting plate is assembled on the upper vacuum chamber through a telescopic unit, and an air inlet and an air outlet of the dust removal mechanism are located in the upper vacuum chamber and located on the outer side of the sealing frame. The stirring unit, the first clamp unit and the second clamp unit are assembled on the mounting plate through a two-axis translation mechanism, a first material containing cup capable of being opened and closed is detachably assembled on the first clamp unit, a second material containing cup capable of being opened and closed is detachably assembled on the second clamp unit, and the edge of the mounting plate is tightly attached to a rubber strip. External dust is prevented from entering the side, away from the cabinet door, of the mounting plate, the dust removal mechanism is started to generate airflow in the space between the mounting plate and the cabinet door to remove the dust, the tops of the first material containing cup and the second material containing cup are in the covering state, and the dust cannot enter the raw materials to pollute the raw materials.

Description

Technical Field

[0001] This invention relates to the technical field of vacuum casting machines, specifically to a dustproof vacuum casting machine. Background Technology

[0002] A vacuum casting machine, also commonly known as a vacuum injection molding machine, is a specialized piece of equipment that uses silicone molds to replicate small batches of plastic or rubber functional parts in a vacuum environment. It is primarily used for rapid prototyping, functional testing, and small-batch trial production. Vacuuming during the pouring of silicone and resin effectively removes air bubbles from the material, which is crucial for ensuring high precision and excellent surface quality of the replicated parts. Silicone molds have good flexibility, allowing for the replication of very complex structures, and demolding is easy, but their lifespan is limited, making them particularly suitable for small-batch production.

[0003] Chinese utility model patent application number CN201921546212.4, entitled "A Dustproof Vacuum Coating Machine," discloses a dustproof vacuum coating machine. It features a control mechanism and an air extraction device on one side of the machine body, a sealing baffle on the side of the machine body, a sealing door on the machine body, a sealing protrusion at the center of the sealing door, a sealing groove on the sealing door that matches the sealing baffle, and a dustproof pad on one side of the sealing groove. In use, closing the sealing door on the machine body causes the sealing protrusion at the center of the sealing door to seal against the machine body. Simultaneously, the sealing groove of the sealing door completely fits and seals against the sealing baffle. The dustproof pad on one side of the sealing groove provides both auxiliary sealing and dust prevention.

[0004] During the use of a vacuum casting machine, in addition to the dust being introduced due to air leakage during vacuuming caused by sealing issues, dust is also introduced when the cabinet door is opened to place the material cup. This dust will remain in the upper vacuum chamber, but the main function of the vacuum machine is not dust removal. In fact, dust can even affect the lifespan of the vacuum machine. The dust introduced when the cabinet door is opened is the main source of dust pollution for the vacuum casting machine. Therefore, it is necessary to design a dustproof vacuum casting machine. Summary of the Invention

[0005] To address the aforementioned technical problems, the purpose of this invention is to overcome the issue in the prior art where dust enters the upper vacuum chamber when the cabinet door of the vacuum molding machine is opened and cannot be removed.

[0006] To achieve the above objectives, the present invention provides a dustproof vacuum molding machine, comprising a molding machine body having an upper vacuum chamber and a lower vacuum chamber, and further comprising: a sealing frame fitted to the inner side wall of the upper vacuum chamber, a rubber strip mounted on the sealing frame, a vertical mounting plate mounted in the upper vacuum chamber on the inner side of the sealing frame via a telescopic unit and capable of fitting against the rubber strip, a dust removal mechanism mounted on the molding machine body with both the air inlet and outlet located in the upper vacuum chamber on the outer side of the sealing frame, a stirring unit mounted on the mounting plate near the sealing frame via a two-axis translation mechanism, and a first clamping unit and a second clamping unit mounted on the mounting plate near the sealing frame, wherein the first clamping unit is detachably fitted with an openable and closable first material cup, and the second clamping unit is detachably fitted with an openable and closable second material cup.

[0007] Preferably, the first clamping unit and the second clamping unit have the same structure, the volume of the second clamping unit is smaller than that of the first clamping unit and it is located diagonally above the first clamping unit, the first container cup and the second container cup have the same structure, and the volume of the second container cup is smaller than that of the first container cup; The first cup includes a cup body and a flip cover hinged to the cup body via a hinge shaft. An extension arm extends in the opposite direction from the connection between the flip cover and the hinge shaft. The first clamping mechanism includes a semi-ring support that can be detachably connected to the cup body, a rotating mechanism for driving the semi-ring support to rotate, and a pressing mechanism assembled in the middle of the semi-ring support and capable of pushing the extension arm downward.

[0008] Preferably, the telescopic unit includes a connecting plate fixedly connected to a mounting plate via a horizontally hollow connecting arm, at least one pair of mounting seats respectively mounted on the inner wall of the upper vacuum chamber opposite to the connecting plate and on the connecting plate, at least one X-shaped telescopic frame for connecting the pair of mounting seats, and a first drive push rod mounted on the inner wall of the upper vacuum chamber for driving the X-shaped telescopic frame. Both the mounting plate and the connecting plate are provided with through holes that match the end of the connecting arm, and the connecting arm is filled with sealing mud.

[0009] Preferably, the top of the upper vacuum chamber is recessed and provided with at least one mounting groove whose length direction is consistent with the extension direction of the X-shaped telescopic frame. A strip slide rail is installed in the mounting groove, and at least one pulley that is slidably connected to the strip slide rail is installed on the connecting plate through a connecting frame.

[0010] Preferably, the rotating mechanism includes a first mounting bracket mounted on a mounting plate, a horizontal connecting shaft fixedly connected to the semi-ring bracket and rotatably connected to the first mounting bracket, and a first motor mounted on the first mounting bracket and drivenly connected to the connecting shaft.

[0011] Preferably, the pressing mechanism includes a second drive push rod mounted on the middle of the semi-ring support and located above the semi-ring support via a second mounting bracket, and a pressure block mounted on the pressing end of the second drive push rod.

[0012] Preferably, both ends of the semi-ring support are provided with notches, and elastic pins are fitted on the notches. The edge of the cup body is provided with a connecting part that matches the pair of notches, and the connecting part is provided with a socket for the corresponding elastic pin to be inserted.

[0013] Preferably, the elastic pin includes a mounting cylinder mounted on one side wall of the notch, an end cap mounted on the open end of the mounting cylinder, a rod that slides coaxially through the end cap and the top of the mounting cylinder, a mounting ring that is fixedly connected coaxially to the rod and slides in contact with the inner wall of the mounting cylinder, a spring disposed inside the mounting cylinder and whose two ends respectively abut against the mounting ring and the end cap, and a pull cap mounted on the end of the rod away from the connecting part.

[0014] According to the above technical solution, the dustproof vacuum casting machine provided by the present invention has the following advantages compared with the prior art: Firstly, the rubber strip is tightly attached to the edge of the mounting plate to prevent external dust from entering the side of the mounting plate away from the cabinet door. At this time, the dust removal mechanism is activated, generating airflow in the space between the mounting plate and the cabinet door to remove the dust that entered when the cabinet door was opened. Furthermore, the tops of the first and second material cups are closed, so dust will not enter the raw materials and contaminate them. Secondly, by separating a small space that is in contact with the outside through the mounting plate, the dust removal effect can be increased, while the dust removal pressure of the dust removal mechanism can also be reduced.

[0015] Other features and advantages of the present invention will be described in detail in the following detailed description section; and all parts not covered in the present invention are the same as or can be implemented using the prior art. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a dustproof vacuum casting machine provided by the present invention; Figure 2 This invention provides a dustproof vacuum casting machine. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial three-dimensional structural diagram of a dustproof vacuum casting machine provided by the present invention. Figure 1 ; Figure 4 This is a three-dimensional structural diagram of the telescopic unit of a dustproof vacuum casting machine provided by the present invention; Figure 5 This is a partial three-dimensional structural diagram of a dustproof vacuum casting machine provided by the present invention. Figure 2 .

[0017] Explanation of reference numerals in the attached figures 1. Upper vacuum chamber; 2. Lower vacuum chamber; 3. Molding machine body; 4. Sealing frame; 5. Rubber strip; 6. Mounting plate; 7. Dust removal mechanism; 8. Two-axis translation mechanism; 9. Stirring unit; 10. First clamping unit; 11. Second clamping unit; 12. First material container; 13. Second material container; 14. Container body; 15. Flip-top; 16. Extension arm; 17. Semi-ring support; 18. Connecting arm; 19. Connecting plate ; 20. Mounting base; 21. X-type telescopic frame; 22. First drive push rod; 23. Strip slide rail; 24. Connecting frame; 25. Pulley; 26. First mounting frame; 27. Connecting shaft; 28. First motor; 29. ​​Second drive push rod; 30. Pressure block; 31. Elastic pin; 32. Connecting part; 33. Mounting cylinder; 34. End cap; 35. Insert rod; 36. Mounting ring; 37. Spring; 38. Pull cap. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "inner," and "outer" in the terminology represent the orientation of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0020] like Figure 1-5 As shown, a dustproof vacuum molding machine includes a molding machine body 3 with an upper vacuum chamber 1 and a lower vacuum chamber 2, and further includes: a sealing frame 4 attached to the inner wall of the upper vacuum chamber 1, a rubber strip 5 mounted on the sealing frame 4, a vertical mounting plate 6 mounted on the upper vacuum chamber 1 inside the sealing frame 4 via a telescopic unit and able to adhere to and abut against the rubber strip 5, a dust removal mechanism 7 mounted on the molding machine body 3 with both the air inlet and outlet located on the upper vacuum chamber 1 outside the sealing frame 4, a stirring unit 9 mounted on the side of the mounting plate 6 near the sealing frame 4 via a two-axis translation mechanism 8, and a first clamping unit 10 and a second clamping unit 11 mounted on the side of the mounting plate 6 near the sealing frame 4. The first clamping unit 10 is detachably mounted with an openable and closable first material cup 12, and the second clamping unit 11 is detachably mounted with an openable and closable second material cup 13.

[0021] In the above technical solution, the main body 3 of the molding machine is equipped with a cabinet door, which is not shown in the figure; the two-axis translation mechanism 8 is an existing mature technology, which is generally composed of two sets of lead screw slides. In this solution, it is composed of a set of horizontal lead screw slides and a vertical electric multi-stage telescopic rod. The electric multi-stage telescopic rod is also an existing mature technology, including a second motor and multiple lead screws. By using multiple lead screws that are threaded together and nested, the rotational motion of the second motor is sequentially converted into the linear motion of each stage of the rod. The stirring unit 9 is also a mature existing technology. The stirring unit 9 includes a third motor and a stirring rod connected by a movable joint; the dust removal mechanism 7 is a mature existing technology, which generally includes an exhaust fan, an intake fan, connected pipes and filter elements. The filter elements can be made of polyester, P84, or PTFE membrane, and the filter elements should be cleaned regularly.

[0022] When in use, the telescopic unit moves the mounting plate 6 toward the sealing frame 4, so that the edge of the mounting plate 6 is tightly attached to the rubber strip 5. At this time, the cabinet door is opened, and the space inside the upper vacuum chamber 1 located on the mounting plate 6 is isolated from the outside, preventing external dust from entering the side of the mounting plate 6 away from the cabinet door. The first material cup 12 and the second material cup 13 containing the raw materials are respectively mounted on the first clamping unit 10 and the second clamping unit 11, and then the upper cabinet door is closed. At this time, the dust removal mechanism 7 is activated, generating airflow in the space between the mounting plate 6 and the cabinet door to remove the dust that entered when the cabinet door was opened. The tops of the first material cup 12 and the second material cup 13 are closed, so dust will not enter the raw materials and contaminate them. The mounting plate 6 separates a small space that is in contact with the outside, which can increase the dust removal effect and reduce the dust removal pressure of the dust removal mechanism 7. After the dust removal mechanism 7 is activated, the upper vacuum chamber 1 is in a dust-removed state. The telescopic unit retracts, causing the mounting plate 6 to move away from the sealing frame 4 and return to its original position. The tops of the first and second material cups 12 and 13 open. The two-axis translation mechanism 8 drives the stirring unit into the larger first material cup 12 located below for stirring. After stirring is completed, the two-axis translation mechanism 8 drives the stirring unit 9 to return to its original position. The raw material in the second material cup 13 is poured into the first material cup 12 and stirred. The stirred raw material is poured downward into the pouring funnel, and the mixed raw material is transported by the pressure difference between the upper vacuum chamber 1 and the lower vacuum chamber 2.

[0023] In a preferred embodiment of the present invention, the first clamping unit 10 and the second clamping unit 11 have the same structure, the volume of the second clamping unit 11 is smaller than that of the first clamping unit 10 and it is located obliquely above the first clamping unit 10, and the first serving cup 12 and the second serving cup 13 have the same structure, the volume of the second serving cup 13 is smaller than that of the first serving cup 12. The first cup 12 includes a cup body 14 and a flip cover 15 hinged to the cup body 14 via a hinge shaft. An extension arm 16 extends in the opposite direction from the connection between the flip cover 15 and the hinge shaft. The first clamping mechanism includes a semi-ring support 17 that can be detachably connected to the cup body 14, a rotating mechanism for driving the semi-ring support 17 to rotate, and a pressing mechanism assembled in the middle of the semi-ring support 17 and capable of pushing the extension arm 16 downward.

[0024] In the above technical solution, after the first cup 12 is placed on the semi-ring support 17, the extension arm 16 will be located directly below the pressing mechanism. When the dust removal mechanism 7 is activated, the flip cover 15 will close onto the cup body 14 due to gravity, thereby preventing dust from entering the cup body 14 during the dust removal process. After the dust removal is completed, the telescopic unit drives the mounting plate 6 to return to its original position, and the pressing mechanism presses the extension arm 16 downward, causing the flip cover 15 to rotate upward around the hinge axis and open. The second clamping unit 11 and the second cup 13 are used in the same way as the first clamping unit 10 and the first cup 12. The first container 12 is generally used to hold the curing agent, while the second container 13 is usually used to hold the resin.

[0025] In a preferred embodiment of the present invention, the telescopic unit includes a connecting plate 19 fixedly connected to a mounting plate 6 via a horizontally hollow connecting arm 18, at least one pair of mounting seats 20 respectively mounted on the inner wall of the upper vacuum chamber 1 opposite to the connecting plate 19 and on the connecting plate 19, at least one X-shaped telescopic frame 21 for connecting the pair of mounting seats 20, and a first drive push rod 22 mounted on the inner wall of the upper vacuum chamber 1 for driving the X-shaped telescopic frame 21. Both the mounting plate 6 and the connecting plate 19 are provided with through holes that match the end of the connecting arm 18, and the connecting arm 18 is filled with sealing mud.

[0026] In the above technical solution, the X-type telescopic frame 21 is an existing mature technology, also known as a diamond telescopic frame. The first drive push rod 22 drives one end of the X-type telescopic frame 21 to move, thereby controlling the extension and retraction of the X-type telescopic frame 21. The X-type telescopic frame 21 has a small volume after folding. The connecting arm 18 is hollow, allowing lines and pipes to pass through it. After assembly, it is sealed with sealant to prevent dust from passing through the mounting plate 6.

[0027] In a preferred embodiment of the present invention, the top of the upper vacuum chamber 1 is recessed and provided with at least one mounting groove whose length direction is consistent with the telescopic direction of the X-shaped telescopic frame 21. A strip slide rail 23 is assembled in the mounting groove, and at least one pulley 25 that is slidably connected to the strip slide rail 23 is assembled on the connecting plate 19 through the connecting frame 24.

[0028] In the above technical solution, the pulley 25 and the strip rail 23 cooperate to prevent the connecting plate 19 from falling downward due to gravity, and provide an upward pulling force so that the connecting plate 19 can move in the horizontal direction; the mounting groove can hide the strip rail 23 and prevent it from colliding with the mounting plate 6.

[0029] In a preferred embodiment of the present invention, the rotating mechanism includes a first mounting bracket 26 mounted on a mounting plate 6, a horizontal connecting shaft 27 fixedly connected to a semi-ring support 17 and rotatably connected to the first mounting bracket 26, and a first motor 28 mounted on the first mounting bracket 26 and pulsatorically connected to the connecting shaft 27.

[0030] In the above technical solution, the first motor 28 drives the connecting shaft 27 to rotate, thereby driving the semi-ring support 17 to rotate. In practice, a stepper motor is often used to facilitate control of the rotation angle.

[0031] In a preferred embodiment of the present invention, the pressing mechanism includes a second drive push rod 29 mounted on the middle part of the semi-ring support 17 and located above the semi-ring support 17 via a second mounting bracket, and a pressing block 30 mounted on the pressing end of the second drive push rod 29.

[0032] In the above technical solution, the second drive push rod 29 drives the pressure block 30 to move and contact the extension arm 16, which can rotate and open the flip cover 15.

[0033] In a preferred embodiment of the present invention, notches are provided at both ends of the semi-ring support 17, and elastic pins 31 are fitted on the notches. Connecting portions 32 that match a pair of notches are provided on the edge of the cup body 14, and the connecting portions 32 are provided with insertion holes for the corresponding elastic pins 31 to be inserted.

[0034] In the above technical solution, the edge of the cup body 14 rests on the semi-ring support 17, and the connecting part 32 is engaged with the corresponding notch. Then, the elastic pin 31 is inserted into the connecting part 32, thereby fixing the cup body 14 on the semi-ring support 17.

[0035] In a preferred embodiment of the present invention, the elastic pin 31 includes a mounting cylinder 33 mounted on one side wall of the notch, an end cap 34 mounted on the open end of the mounting cylinder 33, a rod 35 that slides coaxially through the end cap 34 and the top of the mounting cylinder 33, a mounting ring 36 that is fixedly connected coaxially to the rod 35 and slides in contact with the inner wall of the mounting cylinder 33, a spring 37 disposed inside the mounting cylinder 33 and whose two ends respectively abut against the mounting ring 36 and the end cap 34, and a pull cap 38 mounted on the end of the rod 35 away from the connecting part 32.

[0036] In the above technical solution, by pulling the cap 38 to drive the insert rod 35 away from the connecting part 32 to slide, the mounting ring 36 slides away from the connecting part 32 in the mounting cylinder 33, and the spring 37 is further compressed until the insert rod 35 is pulled out from the connecting part 32, the cup body 14 and the semi-ring support 17 can be separated. When the cup body 14 needs to be assembled on the semi-ring bracket 17, first pull the pull cap 38 to insert the connecting part 32 into the notch, then release the pull cap 38, and the spring 37 will push the plug rod 35 into the socket.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A dustproof vacuum casting machine, comprising a casting machine body (3) having an upper vacuum chamber (1) and a lower vacuum chamber (2), characterized in that, Also includes: A sealing frame (4) is fitted to the inner wall of the upper vacuum chamber (1), a rubber strip (5) is fitted to the sealing frame (4), a vertical mounting plate (6) is fitted to the upper vacuum chamber (1) inside the sealing frame (4) and can fit against the rubber strip (5) via a telescopic unit, a dust removal mechanism (7) is fitted to the body of the molding machine (3) with the air inlet and outlet located in the upper vacuum chamber (1) outside the sealing frame (4), a stirring unit (9) is fitted to the side of the mounting plate (6) near the sealing frame (4) via a two-axis translation mechanism (8), and a first clamping unit (10) and a second clamping unit (11) are fitted to the side of the mounting plate (6) near the sealing frame (4). The first clamping unit (10) is detachably fitted with an openable first material cup (12), and the second clamping unit (11) is detachably fitted with an openable second material cup (13).

2. The dustproof vacuum casting machine according to claim 1, characterized in that, The first clamp unit (10) and the second clamp unit (11) have the same structure. The second clamp unit (11) is smaller in volume than the first clamp unit (10) and is located diagonally above the first clamp unit (10). The first container cup (12) and the second container cup (13) have the same structure. The second container cup (13) is smaller in volume than the first container cup (12). The first cup (12) includes a cup body (14) and a flip cover (15) hinged to the cup body (14) via a hinge shaft. The flip cover (15) extends in the opposite direction from the connection point with the hinge shaft, and the first clamping mechanism includes a semi-ring support (17) that can be detachably connected to the cup body (14), a rotating mechanism for driving the semi-ring support (17) to rotate, and a pressing mechanism assembled in the middle of the semi-ring support (17) and capable of pushing the extension arm (16) downward.

3. The dustproof vacuum casting machine according to claim 1, characterized in that, The telescopic unit includes a connecting plate (19) fixedly connected to the mounting plate (6) via a horizontal hollow connecting arm (18), at least one pair of mounting seats (20) respectively mounted on the inner wall of the upper vacuum chamber (1) opposite to the connecting plate (19) and on the connecting plate (19), at least one X-shaped telescopic frame (21) for connecting the pair of mounting seats (20), and a first drive push rod (22) mounted on the inner wall of the upper vacuum chamber (1) for driving the X-shaped telescopic frame (21). Both the mounting plate (6) and the connecting plate (19) are provided with through holes that match the end of the connecting arm (18), and the connecting arm (18) is filled with sealing mud.

4. A dustproof vacuum casting machine according to claim 3, characterized in that, The top of the upper vacuum chamber (1) is recessed and has at least one mounting groove whose length direction is consistent with the extension direction of the X-type telescopic frame (21). The mounting groove is equipped with a strip slide rail (23). The connecting plate (19) is equipped with at least one pulley (25) that is slidably connected to the strip slide rail (23) via a connecting frame (24).

5. A dustproof vacuum casting machine according to claim 2, characterized in that, The rotating mechanism includes a first mounting bracket (26) mounted on the mounting plate (6), a horizontal connecting shaft (27) fixedly connected to the semi-ring bracket (17) and rotatably connected to the first mounting bracket (26), and a first motor (28) mounted on the first mounting bracket (26) and drivenly connected to the connecting shaft (27).

6. A dustproof vacuum casting machine according to claim 2, characterized in that, The pressing mechanism includes a second drive push rod (29) mounted on the middle of the semi-ring bracket (17) and located above the semi-ring bracket (17) via a second mounting bracket, and a pressure block (30) mounted on the pressing end of the second drive push rod (29).

7. A dustproof vacuum casting machine according to claim 2, characterized in that, Both ends of the semi-ring support (17) are provided with notches, and elastic pins (31) are fitted on the notches. The edge of the cup body (14) is provided with a connecting part (32) that matches the pair of notches. The connecting part (32) is provided with a socket for the corresponding elastic pin (31) to be inserted.

8. A dustproof vacuum casting machine according to claim 7, characterized in that, The elastic pin (31) includes a mounting cylinder (33) mounted on one side wall of the notch, an end cap (34) mounted on the open end of the mounting cylinder (33), a rod (35) that slides coaxially through the end cap (34) and the top of the mounting cylinder (33), a mounting ring (36) that is fixedly connected coaxially to the rod (35) and slides in contact with the inner wall of the mounting cylinder (33), a spring (37) disposed inside the mounting cylinder (33) and whose two ends respectively abut against the mounting ring (36) and the end cap (34), and a pull cap (38) mounted on the end of the rod (35) away from the connecting part (32).

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