Wax mold surface repairing device and repairing method
Through the combination of wet spray freezing, laser positioning and clamping mechanism, the problems of fixation instability and damage during the wax model drilling process were solved, and efficient and low-cost wax model repair was achieved.
Patent Information
- Application Number
- CN202511197712.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2025-10-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, wax molds are prone to surface dents, scratches, and deformation during the drilling repair process, and require the use of multiple fixtures, resulting in additional costs and adaptability issues.
The wax model is frozen and fixed using a wet spray mechanism, and then frozen using a low-temperature refrigerant. Laser positioning and a clamping mechanism are combined to ensure drilling accuracy. A condenser is used to thaw and air-dry the wax model to avoid damage caused by traditional fixing methods.
The fixed stability and accuracy during the wax pattern drilling process are achieved, surface damage is reduced, repair costs are lowered, and processing efficiency and adaptability are improved.
Smart Images
Figure CN120790846A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of wax mold repairing devices, in particular to a wax mold surface repairing device and a repairing method. BACKGROUND
[0002] Expendable pattern casting (also known as lost wax casting) is a process for making precision metal castings based on a soluble wax mold, which is to pour molten metal into the cavity formed by melting the wax mold, and is widely used in the fields of aerospace, medical devices, artworks and the like. In the process of making the wax mold, materials such as beeswax and paraffin are used to manually carve or inject into a mold to form a cast prototype, and modern technology has introduced 3D printing of wax molds (such as PMMA and real wax printing) to replace traditional wax injection machines. In the prior art, after the wax mold is completed, the wax mold needs to be trimmed, combined and the like, and in the process of trimming the wax mold, since the wax mold is made by using an injection molding process, the depth and diameter of the hole formed on the wax mold are low in size precision due to the use of a core in the mold for forming the hole on the wax mold, and further hole repairing work needs to be performed on the wax mold by using a drilling machine.
[0003] When the drilling machine is used to further repair the hole of the wax mold, a tool clamp needs to be used to fix the wax mold, and during the fixing process, the wax mold is prone to be depressed, scratched, deformed and the like, resulting in that after the drilling is completed, further smoothening and repairing need to be performed on the surface damage of the wax mold. Meanwhile, due to the limitation of the shape of the wax mold, different tool clamps need to be adapted, resulting in additional production cost. SUMMARY
[0004] The application aims to solve the technical problems in the prior art, and therefore provides a wax mold surface repairing device, which comprises: a workbench; a drilling mechanism arranged above the workbench, the drilling mechanism comprising a support column bolted to the upper end face of the workbench, a drilling machine head bolted to the upper end face of the support column, a drill bit arranged on the drilling machine head, and a laser positioning module arranged on the drilling machine head; a wet spraying mechanism arranged on the left side wall of the workbench and used for spraying water for fixing the wax mold after freezing; a freezing mechanism arranged on the upper end face of the workbench, the freezing mechanism comprising a freezing bin opened in the upper end face of the workbench, an evaporator arranged in the freezing bin, a refrigerant flowing in the evaporator and being lower than 0 DEG C, a cold guide plate abutting against the upper end face of the evaporator and used for covering the freezing bin, at least one placing frame arranged on the cold guide plate, a sliding groove opened in the upper end face of the cold guide plate, and a sliding block opened in the lower end face of the placing frame and corresponding to the sliding groove; and the sliding block is slidably arranged in the sliding groove. A pressing mechanism is arranged on the front side wall of the workbench and used for pressing and fixing the placing frame in the hole repairing station.
[0005] As a preferred form of the above technical solution, the refrigerant is freon.
[0006] As a preferred form of the above technical solution, the wet spraying mechanism comprises a nozzle, an ear is welded and fixed on the left side wall of the workbench, a placing hole is formed in the ear, the nozzle is inserted into the placing hole, a limiting plate is arranged on the nozzle and used for avoiding the nozzle from penetrating through the placing hole, one end of a spring hose is communicated with the bottom of the nozzle, the other end of the spring hose is communicated with a water tank, and a water pump is arranged on the spring hose.
[0007] As a preferred form of the above technical solution, the pressing mechanism comprises a mounting block welded and fixed on the front side of the upper end face of the workbench, a screw hole is formed in the mounting block, a screw rod is bolted in the screw hole, a rotating disc is welded and fixed on the end of the screw rod away from the freezing mechanism, and a rotating handle is welded and fixed on the rotating disc.
[0008] As a preferred form of the above technical solution, a protective pad is bonded to the end of the screw rod close to the freezing mechanism.
[0009] As a preferred form of the above technical solution, a thawing mechanism is arranged on the right side of the freezing mechanism, the thawing mechanism comprises a thawing bin formed on the right side of the upper end face of the workbench, a compressor is arranged in the thawing bin, the input end of the compressor is communicated with the output end of the evaporator, the output end of the compressor is communicated with the input end of the condenser, the output end of the condenser is communicated with the input end of the expansion valve, and the output end of the expansion valve is communicated with the input end of the evaporator. A heat-conducting plate for covering the thawing bin is abutted above the compressor, a heat dissipation fin is abutted below the condenser, the heat dissipation fin is bolted on the inner wall of the thawing bin, heat dissipation air holes are formed in the front and rear inner walls of the thawing bin, dust covers are bolted on the heat dissipation air holes, and a heat dissipation fan is arranged in the thawing bin.
[0010] As a preferred form of the above technical solution, a wind-drying frame for air-drying water on the surface of the wax mold is arranged on the front side of the thawing mechanism.
[0011] A wax mold surface repairing method, which uses the wax mold surface repairing device to repair the surface of the wax mold, and comprises the following steps. S1, spray the placement frame with a nozzle, then place the wax mold to be repaired in the placement frame, then move the wax mold back and forth on the placement frame until the axis of the hole to be repaired on the wax mold is on the horizontal line of the cross laser line formed by the laser positioning module, then after the evaporator freezes and fixes the wax mold on the placement frame, move the placement frame to the right until the axis of the hole to be repaired on the wax mold is on the vertical line of the cross laser line formed by the laser positioning module, that is, the positioning of the hole to be repaired on the wax mold is completed, at this time the hole to be repaired on the wax mold is in a concentric state with the drill bit; S2, use the pressing mechanism to press and fix the placement frame, and then use the drill bit to perform the hole repair operation on the wax mold; S3, place the repaired wax mold together with the placement frame on the heat-conducting plate, use the high temperature at the condenser to melt the ice layer fixing the wax mold, and realize rapid demolding of the wax mold; S4, place the demolded wax mold on the air drying rack to dry the surface of the wax mold.
[0012] The present application provides a wax mold surface repair device and a repair method, which has the following beneficial effects: 1, spray the placement frame with a nozzle, then place the wax mold to be repaired in the placement frame, since the placement frame is attached to the heat sink, the heat sink is attached to the evaporator, and the evaporator flows a refrigerant below 0℃, therefore the evaporator can freeze and condense the water in the placement frame, and fix the wax mold on the placement frame, since the melting point of the wax mold material is low, a low speed is required during drilling to prevent the wax mold from melting, and since the hardness of the wax mold material is low, drilling is relatively easy, and the torque of the drill bit on the wax mold during drilling is small, which ensures that the rotational torque of the entire wax mold during drilling is small, which ensures the feasibility of the scheme of freezing and adhering the wax mold with water.
[0013] 2, the scheme of freezing and adhering the wax mold with water avoids the problems of surface indentation, scratching, deformation and other pressure damage caused by fixing the wax mold with traditional fixtures, and further smoothening and repairing of the surface damage of the wax mold is not required after drilling, and the reduction of the process can greatly reduce the cost of wax mold drilling repair. At the same time, the scheme of freezing and adhering the wax mold with water is not limited by the shape of the wax mold, has wide adaptability and low cost.
[0014] 3, since the high temperature / medium temperature high pressure refrigerant flows in the condenser, it can be used to heat the drilled and repaired wax mold, melt the ice layer fixing the wax mold, and realize rapid demolding of the wax mold, and since the temperature of the refrigerant flowing in the condenser is 50-70℃, the thawing process is fast and will not cause the wax mold to melt and deform in a short time, avoiding damage to the wax mold.
[0015] 4, the front side of the thawing mechanism is provided with a drying rack for drying the surface moisture of the wax mold, since the hot air blown out of the front side dust cover has a high temperature, in order to prevent the melting deformation of the wax mold caused by long time high temperature drying, the drying time can be controlled or the drying rack is away from the front side dust cover, so as to ensure that the temperature of the hot air is lower than the melting point of the wax mold.
[0016] 5, at least one placing frame is arranged on the cold guide plate, when the number of placing frames is greater than one, the drilling repair of the wax mold to be repaired can be carried out on one side, and the cooling and freezing fixing operation of other wax molds can be carried out on the other side, so as to fully utilize the cooling and freezing fixing time and maximize the processing efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is the exploded view of the present application; Figure 2 is the structural schematic view of the present application; Figure 3 is the structural schematic view of the wet spraying mechanism in the present application; Figure 4 is Figure 3 is the enlarged view of part A in the present application; Figure 5 is Figure 3 is the enlarged view of part B in the present application; Figure 6 is the schematic view of the freezing mechanism in the present application when working; Figure 7 is the schematic view of the thawing mechanism and the drying mechanism in the present application when working.
[0018] The reference signs in the drawings are as follows: 1, workbench; 2, drilling mechanism; 21, support column; 22, drilling machine head; 23, drill bit; 24, laser positioning module; 3, wet spraying mechanism; 31, nozzle; 32, limiting plate; 33, hanging ear; 34, placing hole; 35, spring hose; 36, water pump; 37, water tank; 4, freezing mechanism; 41, freezing bin; 42, evaporator; 43, cold guide plate; 44, placing frame; 5, pressing mechanism; 51, mounting block; 52, screw hole; 53, screw rod; 54, rotating disc; 55, rotating handle; 56, protective pad; 6, thawing mechanism; 61, thawing bin; 62, compressor; 63, condenser; 64, heat dissipation fin; 65, heat dissipation fan; 66, heat dissipation air hole; 67, dust cover; 68, heat conduction plate; 69, expansion valve; 7, drying rack. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application.
[0020] Embodiment 1 Please refer to Figures 1-7 In this embodiment, a wax mold surface repairing device comprises: a workbench 1; a drilling mechanism 2 arranged above the workbench 1, the drilling mechanism 2 comprising a support column 21 bolted to the upper end face of the workbench 1, a drilling head 22 bolted to the upper end face of the support column 21, a drill bit 23 arranged on the drilling head 22, and a laser positioning module 24 arranged on the drilling head 22; a wet spraying mechanism 3 arranged on the left side wall of the workbench 1, used for spraying water for fixing the wax mold after freezing; a freezing mechanism 4 arranged on the upper end face of the workbench 1, the freezing mechanism 4 comprising a freezing bin 41 opened on the upper end face of the workbench 1, an evaporator 42 arranged in the freezing bin 41, a coolant 42 flowing in the evaporator 42, a cold guide plate 43 abutting above the evaporator 42 and used for covering the freezing bin 41, at least one placing frame 44 arranged on the cold guide plate 43, a sliding groove opened on the upper end face of the cold guide plate 43, and a sliding block opened on the lower end face of the placing frame 44 and corresponding to the sliding groove; the sliding block is slidably arranged in the sliding groove; a pressing mechanism 5 arranged on the front side wall of the workbench 1, used for pressing and fixing the placing frame 44 at the drilling repairing station.
[0021] In a specific implementation, the laser positioning module 24 is used for centering the hole to be repaired on the wax mold and the drill bit 23. When the laser positioning module 24 works, a cross laser line is formed below. After the wax mold is placed on the placing frame 44, the wax mold is moved forward and backward on the placing frame 44 until the axis of the hole to be repaired on the wax mold is on the horizontal line of the cross laser line. Then, after the evaporator 42 freezes and fixes the wax mold on the placing frame 44, the placing frame 44 is moved to the right until the axis of the hole to be repaired on the wax mold is on the vertical line of the cross laser line, that is, the positioning of the hole to be repaired on the wax mold is completed. At this time, the hole to be repaired on the wax mold and the drill bit 23 are in the centered state. Finally, the placing frame 44 is pressed and fixed by using the pressing mechanism 5, and the hole repairing operation on the wax mold can be performed.
[0022] It should be noted that the power module of the drill head 22, the laser positioning module 24, the calibration module (not shown in the figure) and other components are well known to those skilled in the art, and therefore will not be described in detail. In addition, since the drill bit 23 is used for drilling and repairing the hole to be repaired on the wax mold, the wax mold material has a low melting point, so a low speed is required during drilling to prevent the wax mold from melting. In addition, the wax mold material has low hardness, so drilling is relatively easy, and the torque of the drill bit on the wax mold during drilling is small, which ensures that the rotational torque of the entire wax mold during drilling is small, thereby ensuring the feasibility of the scheme of freezing and adhering the wax mold with water.
[0023] As a further embodiment of the present application, please refer to Figure 3 and Figure 5 The wet spraying mechanism 3 comprises a nozzle 31, a hanging ear 33 is welded and fixed on the left side wall of the workbench 1, a placing hole 34 is formed in the hanging ear 33, the nozzle 31 is inserted into the placing hole 34, a limiting plate 32 is further arranged on the nozzle 31 to prevent the nozzle 31 from penetrating through the placing hole 34, one end of a spring hose 35 is communicated with the bottom of the nozzle 31, the other end of the spring hose 35 is communicated with a water tank 37, and a water pump 36 is further arranged on the spring hose 35.
[0024] In specific implementation, the operator can hold the nozzle 31 and use the nozzle 31 to spray water in the placing frame 44, and then place the wax mold to be repaired in the placing frame 44. Since the placing frame 44 is attached to the cold guide plate 43, and the cold guide plate 43 is attached to the evaporator 42, and the evaporator 42 flows with refrigerant below 0°C, the evaporator 42 can freeze and condense the water in the placing frame 44, thereby freezing and fixing the wax mold on the placing frame 44.
[0025] It should be noted that the refrigerant in the evaporator 42 is Freon, and the materials of the evaporator 42, the cold guide plate 43 and the placing frame 44 are metal materials with good heat conduction efficiency. Preferably, the evaporator 42 is a copper pipe, and the cold guide plate 43 and the placing frame 44 are stainless steel sheets.
[0026] Please refer to Figures 1-7 A wax mold surface repair method using the wax mold surface repair device for repair, comprising the following steps: S1, spray wet inside the placement frame 44 with nozzle 31, then place the wax mold to be repaired in the placement frame 44, then move the wax mold back and forth on the placement frame 44 until the axis of the hole to be repaired on the wax mold is on the horizontal line of the cross laser line formed by the laser positioning module 24, then after the evaporator 42 freezes and fixes the wax mold on the placement frame 44, move the placement frame 44 to the right until the axis of the hole to be repaired on the wax mold is on the vertical line of the cross laser line formed by the laser positioning module 24, that is, the positioning of the hole to be repaired on the wax mold is completed, at this time the hole to be repaired on the wax mold is in the center with the drill bit 23; S2, use the pressing mechanism 5 to press and fix the placement frame 44, then use the drill bit 23 to repair the hole on the wax mold.
[0027] Embodiment 2 Please refer to Figures 1-7 In this embodiment, a wax mold surface repair device comprises: a workbench 1; a drilling mechanism 2 arranged above the workbench 1, the drilling mechanism 2 comprising a support column 21 bolted to the upper end face of the workbench 1, a drill head 22 bolted to the upper end face of the support column 21, a drill bit 23 arranged on the drill head 22, and a laser positioning module 24 arranged on the drill head 22; a wet spraying mechanism 3 arranged on the left side wall of the workbench 1 for spraying water to freeze the wax mold; a freezing mechanism 4 arranged on the upper end face of the workbench 1, the freezing mechanism 4 comprising a freezing bin 41 opened on the upper end face of the workbench 1, an evaporator 42 arranged in the freezing bin 41, a refrigerant with a temperature lower than 0℃ flowing in the evaporator 42, a cold guide plate 43 abutting above the evaporator 42 for covering the freezing bin 41, at least one placement frame 44 arranged on the cold guide plate 43, a sliding groove opened on the upper end face of the cold guide plate 43, and a sliding block opened on the lower end face of the placement frame 44 corresponding to the sliding groove; the sliding block is slidably installed in the sliding groove; a pressing mechanism 5 arranged on the front side wall of the workbench 1 for pressing and fixing the placement frame 44 at the drilling repair station.
[0028] In the embodiment, the laser positioning module 24 is used for positioning the hole to be repaired on the wax mold and the drill bit 23. When the laser positioning module 24 works, a cross laser line is formed below. After the wax mold is placed on the placing frame 44, the wax mold is moved forward and backward on the placing frame 44 until the axis of the hole to be repaired on the wax mold is on the horizontal line of the cross laser line. Then, after the evaporator 42 freezes and fixes the wax mold on the placing frame 44, the placing frame 44 is moved to the right until the axis of the hole to be repaired on the wax mold is on the vertical line of the cross laser line, that is, the positioning of the hole to be repaired on the wax mold is completed. At this time, the hole to be repaired on the wax mold is in the centering state with the drill bit 23. Finally, the placing frame 44 is fixed by the pressing mechanism 5, and the hole repairing operation on the wax mold can be performed.
[0029] It should be noted that the power module, the calibration module (not shown in the figure) and other components of the drill head 22 and the laser positioning module 24 are well known to those skilled in the art, and thus will not be described in detail. In addition, since the drill bit 23 is used for drilling hole repairing operation on the hole to be repaired on the wax mold, the low-speed drilling is required to prevent the wax mold from melting due to the low melting point of the wax mold material. Moreover, since the wax mold material has low hardness, the drilling is easy, and the torque of the wax mold during drilling is small, which ensures that the rotation torque of the whole wax mold during drilling is small, thereby ensuring the feasibility of the scheme of freezing and adhering the wax mold by water.
[0030] As a further embodiment of the present application, please refer to Figure 3 and Figure 5 The wet spraying mechanism 3 comprises a nozzle 31, a hanging ear 33 is welded and fixed on the left side wall of the workbench 1, a placing hole 34 is formed in the hanging ear 33, the nozzle 31 is inserted into the placing hole 34, a limiting plate 32 is arranged on the nozzle 31 to prevent the nozzle 31 from penetrating through the placing hole 34, one end of a spring hose 35 is communicated with the bottom of the nozzle 31, the other end of the spring hose 35 is communicated with a water tank 37, and a water pump 36 is arranged on the spring hose 35.
[0031] In the embodiment, the operator can hold the nozzle 31 to spray water in the placing frame 44, and then place the wax mold to be repaired in the placing frame 44. Since the placing frame 44 is attached to the cold lead plate 43, the cold lead plate 43 is attached to the evaporator 42, and the refrigerant with a temperature lower than 0℃ flows in the evaporator 42, the evaporator 42 can freeze and condense the water in the placing frame 44 to freeze and fix the wax mold on the placing frame 44.
[0032] It should be noted that the refrigerant in the evaporator 42 is Freon, and the materials of the evaporator 42, the cold lead plate 43 and the placing frame 44 are metal materials with good heat conduction efficiency. Preferably, the evaporator 42 is a copper pipe, and the cold lead plate 43 and the placing frame 44 are stainless steel sheets.
[0033] As a further embodiment of the present application, please refer to Figure 3 and Figure 4 The pressing mechanism 5 includes a mounting block 51 welded on the front side of the upper end face of the workbench 1, a screw hole 52 is formed in the mounting block 51, a screw rod 53 is bolted in the screw hole 52, a rotating disc 54 is welded and fixed on the end of the screw rod 53 away from the freezing mechanism 4, and a rotating handle 55 is welded and fixed on the rotating disc 54.
[0034] Further, a protective pad 56 is bonded to the end of the screw rod 53 close to the freezing mechanism 4.
[0035] In a specific implementation, the rotating handle 55 is held by an operator to rotate the rotating disc 54, thereby driving the screw rod 53 to rotate, and the screw rod 53 can move forward and backward in the screw hole 52, so as to realize the pressing and fixing and releasing of the placement frame 44. Anti-skid lines or an anti-skid sleeve is processed or bonded on the rotating handle 55, so as to facilitate the operator to hold it.
[0036] It should be noted that the pressing mechanism 5 can also use other fixing and clamping mechanisms such as air cylinder pressing and bolt fixing to realize the fixing of the position of the placement frame 44.
[0037] Please refer to Figures 1-7 A wax mold surface repairing method using the wax mold surface repairing device to repair, and the specific steps are as follows: S1, wet the placement frame 44 with the nozzle 31, then place the wax mold to be repaired in the placement frame 44, and then move the wax mold on the placement frame 44 forward and backward until the axis of the hole position to be repaired on the wax mold is on the horizontal line of the cross laser line formed by the laser positioning module 24, and then after the evaporator 42 freezes and fixes the wax mold on the placement frame 44, move the placement frame 44 to the right until the axis of the hole position to be repaired on the wax mold is on the vertical line of the cross laser line formed by the laser positioning module 24, that is, the positioning of the hole position to be repaired on the wax mold is completed, and at this time, the hole position to be repaired on the wax mold is in the center with the drill bit 23; S2, use the pressing mechanism 5 to press and fix the placement frame 44, and then use the drill bit 23 to perform the hole repairing operation on the wax mold.
[0038] Embodiment 3 A wax mold surface repairing device, comprising: a workbench 1; a drilling mechanism 2 arranged above the workbench 1, the drilling mechanism 2 including a support column 21 bolted on the upper end face of the workbench 1, a drill head 22 bolted on the upper end face of the support column 21, a drill bit 23 arranged on the drill head 22, and a laser positioning module 24 arranged on the drill head 22; A wet spraying mechanism 3 is arranged on the left side wall of the workbench 1 and used for spraying water to fix the wax mold after freezing; A freezing mechanism 4 is arranged on the upper end face of the workbench 1, the freezing mechanism 4 comprises a freezing bin 41 arranged on the upper end face of the workbench 1, an evaporator 42 arranged in the freezing bin 41, a refrigerant with a temperature lower than 0℃ flowing in the evaporator 42, a cold lead plate 43 abutting on the evaporator 42 and used for covering the freezing bin 41, at least one placing frame 44 arranged on the cold lead plate 43, a sliding groove arranged on the upper end face of the cold lead plate 43, and a sliding block arranged on the lower end face of the placing frame 44 and corresponding to the sliding groove; the sliding block is slidably arranged in the sliding groove; A pressing mechanism 5 is arranged on the front side wall of the workbench 1 and used for pressing and fixing the placing frame 44 in the hole repairing position.
[0039] In the embodiment, the laser positioning module 24 is used for centering the hole position to be repaired on the wax mold and the drill bit 23; when the laser positioning module 24 works, a cross laser line is formed below; after the wax mold is placed on the placing frame 44, the wax mold is moved forward and backward on the placing frame 44 until the axis of the hole position to be repaired on the wax mold is on the horizontal line of the cross laser line; then, after the evaporator 42 freezes and fixes the wax mold on the placing frame 44, the placing frame 44 is moved to the right until the axis of the hole position to be repaired on the wax mold is on the vertical line of the cross laser line, that is, the positioning of the hole position to be repaired on the wax mold is completed; at this time, the hole position to be repaired on the wax mold and the drill bit 23 are in the centered state; finally, the pressing mechanism 5 is used for pressing and fixing the placing frame 44, and then the hole repairing operation on the wax mold can be performed.
[0040] It should be noted that the power module, the calibration module (not shown in the figure) and other components of the drill head 22 and the laser positioning module 24 are all known to those skilled in the art, and thus will not be described in detail. In addition, since the drill bit 23 is used for drilling hole repairing operation on the hole position to be repaired on the wax mold, the low-speed drilling is required to prevent the wax mold from melting due to the low melting point of the wax mold material; and since the wax mold material has low hardness, the drilling is easy, and the torque of the wax mold caused by the drill bit is small during drilling, which ensures that the rotation torque of the entire wax mold is small during drilling, and thus the scheme of freezing and adhering the wax mold by water is feasible.
[0041] As a further embodiment of the present application, please refer to Figure 3 and Figure 5The wet spraying mechanism 3 comprises a nozzle 31, a hanging lug 33 welded and fixed on the left side wall of the workbench 1, a placing hole 34 formed on the hanging lug 33, the nozzle 31 inserted into the placing hole 34, a limiting plate 32 arranged on the nozzle 31 to avoid the nozzle 31 from penetrating through the placing hole 34, one end of a spring hose 35 communicated with the bottom of the nozzle 31, a water tank 37 communicated with the other end of the spring hose 35, and a water pump 36 arranged on the spring hose 35.
[0042] In the embodiment, the operator can hold the nozzle 31 to spray the water in the placing frame 44, and then place the wax mold to be repaired in the placing frame 44. Since the placing frame 44 is attached to the cold conducting plate 43, the cold conducting plate 43 is attached to the evaporator 42, and the refrigerant with a temperature lower than 0℃ flows in the evaporator 42, the evaporator 42 can freeze and condense the water in the placing frame 44, so as to freeze and fix the wax mold on the placing frame 44.
[0043] It should be noted that the refrigerant in the evaporator 42 is Freon, and the materials of the evaporator 42, the cold conducting plate 43 and the placing frame 44 are metal materials with good heat conduction efficiency. Preferably, the evaporator 42 is a copper pipe, and the cold conducting plate 43 and the placing frame 44 are stainless steel sheets.
[0044] As a further embodiment of the present application, please refer to Figure 3 and Figure 4 The pressing mechanism 5 comprises a mounting block 51 welded and fixed on the front side of the upper end face of the workbench 1, a screw hole 52 formed on the mounting block 51, a screw rod 53 screwed and installed in the screw hole 52, a rotating disc 54 welded and fixed on the end of the screw rod 53 away from the freezing mechanism 4, and a rotating handle 55 welded and fixed on the rotating disc 54.
[0045] Further, the screw rod 53 is bonded with a protective pad 56 close to the end of the freezing mechanism 4.
[0046] In the embodiment, the operator holds the rotating handle 55 to rotate the rotating disc 54, so as to drive the screw rod 53 to rotate, and the screw rod 53 can move forward and backward in the screw hole 52, so as to press and fix the placing frame 44 and release the placing frame 44. The rotating handle 55 is processed with anti-skid lines or bonded with an anti-skid sleeve, so as to be conveniently held by the operator.
[0047] It should be noted that the pressing mechanism 5 can also use other fixing and clamping mechanisms such as air cylinder pressing and screw fixing to fix the position of the placing frame 44.
[0048] As a further embodiment of the present application, please refer to Figure 1The freezing mechanism 4 is provided with a thawing mechanism 6 on the right side, the thawing mechanism 6 comprises a thawing bin 61 opened on the right side of the upper end face of the workbench 1, a compressor 62 is arranged in the thawing bin 61, the input end of the compressor 62 is communicated with the output end of the evaporator 42, the output end of the compressor 62 is communicated with the input end of a condenser 63, the output end of the condenser 63 is communicated with the input end of an expansion valve 69, and the output end of the expansion valve 69 is communicated with the input end of the evaporator 42; The condenser 63 is provided below the compressor 62 and abuts against a heat conduction plate 68 for covering the thawing bin 61, and the heat conduction plate 68 is bolted to the inner wall of the thawing bin 61.
[0049] In the specific implementation, the low-temperature and low-pressure refrigerant in the evaporator 42 is compressed into high-temperature and high-pressure refrigerant by the compressor 62, flows into the condenser 63, and under the heat dissipation and cooling effect of the heat dissipation fins 64 and the cooling fan 65, the high-temperature and high-pressure refrigerant in the condenser 63 gradually cools into medium-temperature and high-pressure refrigerant, and the medium-temperature and high-pressure refrigerant is converted into low-temperature and low-pressure refrigerant into the evaporator 42 under the action of the expansion valve 69, forming a cycle.
[0050] At this time, the high-temperature / medium-temperature and high-pressure refrigerant flowing in the condenser 63 can be used to heat the wax mold after the hole repair is completed, so that the ice layer fixing the wax mold is melted, the wax mold is quickly demolded, and because the temperature of the refrigerant flowing in the condenser 63 is 50-70℃, the thawing process is fast and will not cause the wax mold to be deformed in a short time, avoiding the damage of the wax mold.
[0051] It should be noted that the condenser 63 and the heat conduction plate 68 are made of metal materials with good heat conduction efficiency, and the condenser 63 is preferably a copper pipe, and the heat conduction plate 68 is preferably a stainless steel sheet. In addition, the control module, power module (not shown in the figure) and other components of the compressor 62 and the cooling fan 65 are well known to those skilled in the art, and therefore will not be described here.
[0052] As a further embodiment of the present application, please refer to Figure 1 and Figure 7 The thawing mechanism 6 is provided with a drying rack 7 for drying the surface moisture of the wax mold on the front side.
[0053] In the specific implementation, because the temperature of the hot air blown out of the front dust cover 67 is high, in order to prevent the wax mold from being deformed due to long-time high-temperature drying, the drying time can be controlled or the drying rack 7 is away from the front dust cover 67, so that the temperature of the hot air is lower than the melting point of the wax mold.
[0054] Referring to Figures 1-7 A wax mold surface repairing method using the wax mold surface repairing device for repairing, specifically as follows: S1, use the nozzle 31 to spray wet in the placing frame 44, then place the wax mold to be repaired in the placing frame 44, then move the wax mold on the placing frame 44 forward and backward until the axis of the hole position to be repaired on the wax mold is on the horizontal line of the cross laser line formed by the laser positioning module 24, then after the evaporator 42 freezes and fixes the wax mold on the placing frame 44, move the placing frame 44 to the right until the axis of the hole position to be repaired on the wax mold is on the vertical line of the cross laser line formed by the laser positioning module 24, that is, the positioning of the hole position to be repaired on the wax mold is completed, at this time the hole position to be repaired on the wax mold is in the center with the drill bit 23; S2, use the pressing mechanism 5 to press and fix the placing frame 44, then use the drill bit 23 to repair the hole position on the wax mold; S3, place the repaired wax mold together with the placing frame 44 on the heat conducting plate 68, use the high temperature at the condenser 63 to melt the ice layer fixing the wax mold, realize the rapid demolding of the wax mold; S4, place the demolded wax mold on the air drying rack 7 to dry the extra moisture on the surface of the wax mold.
[0055] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A wax mold surface repair device, characterized in that: include: Workbench (1); A drilling mechanism (2) is arranged above the workbench (1); A spraying mechanism (3) is provided on the left side wall of the workbench (1) and is used for spraying water that can fix the wax mold after freezing; A freezing mechanism (4) is arranged on the upper end surface of the workbench (1), and the freezing mechanism (4) includes a freezing chamber (41) opened on the upper end surface of the workbench (1), an evaporator (42) is arranged in the freezing chamber (41), a refrigerant with a temperature below 0°C flows in the evaporator (42), a cold guide plate (43) for sealing the freezing chamber (41) is abutted above the evaporator (42), at least one placement frame (44) is provided on the cold guide plate (43), a slide groove is provided on the upper end surface of the cold guide plate (43), and a slider corresponding to the slide groove is provided on the lower end surface of the placement frame (44); the slider is slidably installed in the slide groove. A pressing mechanism (5) is provided on the front side wall of the workbench (1) and is used to press and fix the placement frame (44) at the drilling repair station.
2. A wax mold surface repair device according to claim 1, characterized in that: The drilling mechanism (2) comprises a support column (21) bolted to the upper end surface of the workbench (1); a drilling machine head (22) is bolted to the upper end surface of the support column (21); a drill bit (23) is provided on the drilling machine head (22); and a laser positioning module (24) is also provided on the drilling machine head (22).
3. The wax mold surface repair device according to claim 2, characterized in that: The refrigerant is Freon.
4. The wax mold surface repair device according to claim 1, characterized in that: The spraying mechanism (3) includes a nozzle (31). A hanging ear (33) is welded and fixed on the left side wall of the workbench (1). A placement hole (34) is provided on the hanging ear (33). The nozzle (31) is inserted into the placement hole (34). A limiting plate (32) is also provided on the nozzle (31) to prevent the nozzle (31) from passing through the placement hole (34). The bottom of the nozzle (31) is connected to one end of a spring hose (35). The other end of the spring hose (35) is connected to a water tank (37). A water pump (36) is also provided on the spring hose (35).
5. The wax mold surface repair device according to claim 1, characterized in that: The clamping mechanism (5) includes a mounting block (51) welded and fixed to the front side of the upper end of the workbench (1), a screw hole (52) is provided on the mounting block (51), a screw rod (53) is bolted in the screw hole (52), a turntable (54) is welded and fixed to the end of the screw rod (53) away from the freezing mechanism (4), and a rotating handle (55) is welded and fixed to the turntable (54).
6. The wax mold surface repair device according to claim 5, characterized in that: A protective pad (56) is bonded to the end of the screw (53) close to the freezing mechanism (4).
7. The wax mold surface repair device according to claim 3, characterized in that: A thawing mechanism (6) is provided on the right side of the freezing mechanism (4), and the thawing mechanism (6) includes a thawing chamber (61) provided on the right side of the upper end surface of the workbench (1), and a compressor (62) is provided in the thawing chamber (61), the input end of the compressor (62) is communicated with the output end of the evaporator (42), the output end of the compressor (62) is communicated with the input end of the condenser (63), the output end of the condenser (63) is communicated with the input end of the expansion valve (69), and the output end of the expansion valve (69) is communicated with the input end of the evaporator (42); A heat conducting plate (68) for sealing the thawing chamber (61) is abutted on the upper side of the compressor (62), and a heat dissipation fin (64) is abutted on the lower side of the condenser (63). The heat dissipation fin (64) is bolted to the inner wall of the thawing chamber (61). Heat dissipation holes (66) are provided on the front and rear inner walls of the thawing chamber (61). A dust cover (67) is bolted to the heat dissipation holes (66). A heat dissipation fan (65) is also provided in the thawing chamber (61).
8. The wax mold surface repair device according to claim 7, characterized in that: The front side of the thawing mechanism (6) is provided with an air-drying rack (7) for air-drying moisture on the surface of the wax mold.
9. A wax mold surface repair method, characterized in that: Repairing is performed using the wax mold surface repair device as claimed in claim 8, specifically in the following steps: S1, spray the inside of the placement frame (44) with a nozzle (31), then place the wax mold to be repaired in the placement frame (44), and then move the wax mold back and forth on the placement frame (44) until the axis of the hole to be repaired on the wax mold is on the horizontal line of the cross laser line formed by the laser positioning module (24), and then after the evaporator (42) freezes and fixes the wax mold on the placement frame (44), move the placement frame (44) to the right until the axis of the hole to be repaired on the wax mold is on the vertical line of the cross laser line formed by the laser positioning module (24), that is, the positioning of the hole to be repaired on the wax mold is completed, and at this time the hole to be repaired on the wax mold and the drill bit (23) are in a centering state; S2, using the pressing mechanism (5) to press and fix the placement frame (44), and then using the drill bit (23) to repair the holes on the wax mold; S3, placing the repaired wax mold together with the placement frame (44) on the heat conducting plate (68), using the high temperature at the condenser (63) to melt the ice layer fixing the wax mold, thereby achieving rapid demoulding of the wax mold; S4. Place the demoulding wax mold on an air-drying rack (7) to air-dry the excess moisture on its surface.