A lightweight process for refrigerator crankcase

Abstract

The invention discloses a lightweight process for a refrigerator crankcase, specifically relating to the technical field of refrigerator crankcase production. The invention folds and stores the dust filter by bringing the movable frame and the installation frame closer to each other, removes the rotating block from the upper fixed rod, and releases the restrictive effect on the dust filter. The rotating block moves downward synchronously with the movable frame. At this time, the dust filter is unfolded, and the rotating block is rotated to the position of the lower fixed rod, and the limiting hole on the rotating block is engaged with the surface of the lower fixed rod. Thereafter, the elastic rod is pulled to slide with the ferrule, and then the elastic rod is toggled so that the positioning protrusion on the elastic rod reaches the position of the positioning groove and is blocked by the elastic rod and the opening of the limiting hole, thereby increasing the connection stability between the movable frame and the processing base. Through the arrangement of the movable frame and the dust filter, the particle size of the dust filter is smaller than the diameter of the dust particles, thereby achieving the blocking of the processing environment, avoiding the entry of external impurities during the blowing and cooling process, and effectively protecting.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerator crankcase production, and in particular to a refrigerator crankcase lightweighting process. Background Art

[0002] Most of the refrigerator crankcases commonly found on the market use cast iron crankcases and cast aluminum crankcases. The existing cast iron crankcases are heavier, the cast aluminum crankcases are not wear-resistant, and the refrigerator crankcase and cylinder liner are not well bonded. In order to reduce the weight during transportation and handling, reduce labor intensity, and increase economy, refrigerator compressors are developing towards lightweighting.

[0003] The invention patent with publication number CN105570090A discloses a split crankcase for a refrigerator compressor. It has the advantages of simple structural process, high production efficiency, low product cost, low labor intensity, and high dimensional accuracy. It can be used for mass production. During casting and molding, there is a lack of protection for the processing environment, which easily causes dust particles to contaminate the crankcase surface. Summary of the Invention

[0004] The object of the present invention is to provide a lightweight process for a refrigerator crankcase. By bringing the movable frame and the mounting frame closer to each other, the dust filter is folded and stored. When blowing air to cool down, the rotating block is first taken out from the upper fixed rod to release the restriction on the dust filter. The elastic rod is toggled so that the positioning protrusion on the elastic rod leaves the inside of the positioning groove. Then the elastic rod is pulled downward. The elastic rod slides with each other through the card slot and the card sleeve. When the positioning protrusion reaches the groove, the elastic rod loses the obstruction to the limiting hole. The rotating block is toggled, and the rotating block and the connecting rod rotate. The rotating block moves downward synchronously with the movable frame. At this time, the dust filter The filter is unfolded, the rotating block is rotated to the position of the lower fixed rod, and the limiting hole on the rotating block is engaged with the surface of the lower fixed rod, and then the elastic rod is pulled to make it slide with the clamping sleeve, and then the elastic rod is toggled so that the positioning protrusion on the elastic rod reaches the position of the positioning groove, which is blocked by the elastic rod and the opening of the limiting hole, thereby increasing the connection stability between the movable frame and the processing base. Through the setting of the movable frame and the dustproof filter, the particle size of the dustproof filter is smaller than the diameter of the dust particles, thereby realizing the blocking of the processing environment, avoiding the entry of external impurities during the blowing and cooling process, and effectively protecting to solve the problems mentioned in the above background technology.

[0005] The present invention can be implemented through the following technical solution: A refrigerator crankcase lightweight process includes the following steps:

[0006] Step 1: Install the two lower mold bases together to achieve the assembly of the lower mold bases, and fasten the two lower mold bases by fastening the components;

[0007] Step 2: inject aluminum alloy mold liquid, and the hydraulic cylinder pushes the transmission plate to drive the movable mold base, and punches the lower mold base to obtain an aluminum alloy crankcase;

[0008] Step 3: Loosen the fastening components and use the synchronous cylinder to drive the corresponding lower mold bases to move relative to each other to achieve demoulding;

[0009] Step 4: Pull the dust filter through the movable frame so that the rotating block on the movable frame rotates to the lower fixed rod on the surface of the processing base. The dust filter is used to seal the processing base and the transmission plate, and the wind force transmitted by the nozzle is used to cool the exposed aluminum alloy crankcase.

[0010] A further technical improvement of the present invention is that: in step one, the fastening assembly includes a protrusion fixedly connected to the end surfaces of the two lower half mold bases, and the surfaces of the protrusion are respectively provided with hole groove one and hole groove two, and the hole groove one and hole groove two are flush, and the interior of the hole groove one is rotatably connected with a screw member, one end of the screw member passes through the interior of the hole groove two and is threadedly connected with a butterfly nut, and the outer surface of the butterfly nut is provided with a rectangular buckle groove.

[0011] A further technical improvement of the present invention is that: in step one, when the two lower mold bases are close to each other and fit together, the screw member is rotated to pass through the inside of hole groove one and hole groove two, and then the butterfly nut is manually screwed, and the butterfly nut and the screw member are threadedly rotated, so that the butterfly nut fits together with the end face of hole groove two, thereby achieving the tightening of the two lower mold bases.

[0012] A further technical improvement of the present invention is that in step 2, the aluminum alloy mold liquid is used in conjunction with the movable mold base, the inner cavities of the two lower mold bases, the protruding columns and the fixed ring blocks to obtain a formed aluminum alloy crankcase.

[0013] A further technical improvement of the present invention is that: in step three, the butterfly nut is loosened so that the end of the butterfly nut is away from the end face of the hole groove two, the fixed restriction of the two lower half mold bases is released, and the corresponding lower half mold bases are pulled by the synchronous cylinder to realize the demolding of the aluminum alloy crankcase.

[0014] A further technical improvement of the present invention is that in step four, the dust filter is unfolded by pulling the movable frame downward, and the rotating block on the connecting rod is rotated. The elastic rod can slide on the sleeve through the cooperation of the slot and the sleeve, and the outer surface of the lower fixed rod enters the limiting hole to realize the connection between the movable frame and the processing base.

[0015] A further technical improvement of the present invention is that in step four, when the lower fixing rod enters the limiting hole, the elastic rod and the sleeve slide and drive the positioning protrusion to move upward, and the elastic rod is moved so that the positioning protrusion is stuck in the positioning groove to block the gap of the limiting hole.

[0016] A further technical improvement of the present invention is that in step four, in the initial state, the rotating block is connected to the surface of the upper fixed rod, and the dust filter is folded and stored by the movable frame and the installation frame being brought closer to each other.

[0017] The present invention also provides a refrigerator crankcase lightweight device, comprising four vertical rods installed on the top surface of a processing base, the outer surfaces of the four vertical rods being slidably connected with a transmission plate, two lower half mold bases that fit together are provided in the middle of the top surface of the processing base, a movable mold base used in conjunction with the two lower half mold bases is provided in the middle of the bottom surface of the transmission plate, and a protective mechanism is provided between the clamping sleeve and the processing base.

[0018] The protective mechanism includes a mounting frame installed on the outside of the movable mold base and fixedly connected to the surface of the transmission plate, the bottom of the mounting frame is provided with a movable frame, and a dust filter is provided between the mounting frame and the movable frame, the end surface of the movable frame is provided with a connecting rod, the end surface of the mounting frame is provided with an upper fixed rod, the outer surface of the connecting rod is rotatably connected to the rotating block, the surface of the rotating block is provided with a limiting hole, the limiting hole is used in conjunction with the outer surface of the upper fixed rod, the bottom surface of the inner cavity of the limiting hole is provided with a groove, the surface of the rotating block is provided with a positioning groove near the upper limit hole, and the surface of the rotating block is provided with a clamping sleeve near the lower limit hole, the inside of the clamping sleeve is slidably connected to an elastic rod of a U-shaped structure, the bottom surface of the elastic rod is provided with a clamping groove that slides with the clamping sleeve, and the surface of the elastic rod is provided with a positioning protrusion that cooperates with the positioning groove.

[0019] A lower fixing rod is installed on the surface of the processing base, and the lower fixing rod, the connecting rod and the upper fixing rod are arranged vertically in a collinear manner.

[0020] A fixed ring block is installed on the inner wall of one of the lower half mold bases, and a plurality of protrusions are installed on the outside of the fixed ring block. The movable mold base is used in conjunction with the two lower half mold bases to obtain a formed aluminum alloy crankcase. The same side surface of the aluminum alloy crankcase is provided with a cylinder liner and a plurality of mounting holes.

[0021] A fastening assembly is provided between the two lower mold bases, and the fastening assembly includes a protrusion fixedly connected to the end surfaces of the two lower mold bases, and the surfaces of the protrusions are respectively provided with hole groove one and hole groove two, and the hole groove one and hole groove two are flush, and the interior of the hole groove one is rotatably connected with a screw member, one end of the screw member passes through the interior of the hole groove two and is threadedly connected with a butterfly nut, the outer surface of the butterfly nut is provided with a rectangular buckle groove, and the inner side surface of the butterfly nut is provided with a rubber pad that fits with the end faces of the two hole grooves.

[0022] A synchronous cylinder is provided above the processing base on one side close to the lower half mold base, and a mounting base connected to the processing base is installed at the bottom of the synchronous cylinder. The piston rod end of the synchronous cylinder is fixed to the surface of the lower half mold base, and the top surface of the processing base is provided with a slide groove slidably connected to the lower half mold base.

[0023] The top surfaces of the four vertical poles are fixedly connected with a mounting plate, a hydraulic cylinder is installed in the middle of the top surface of the mounting plate, and the output end of the hydraulic cylinder is fixed to the top surface of the transmission plate.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, the rotating block is connected to the surface of the upper fixed rod, and the dust filter is folded and stored by the mutual approach of the movable frame and the mounting frame. When blowing and cooling, the rotating block is first removed from the upper fixed rod to release the restrictive effect on the dust filter, and the elastic rod is toggled so that the positioning protrusion on the elastic rod leaves the inside of the positioning groove. Then, the elastic rod is pulled downward, and the elastic rod slides with each other through the card slot and the card sleeve. When the positioning protrusion reaches the groove, the elastic rod loses the obstruction of the limiting hole, and the rotating block is toggled. The rotating block and the connecting rod rotate, and the rotating block moves downward synchronously with the movable frame. The dust filter is unfolded at this time, the rotating block is rotated to the position of the lower fixed rod, and the limiting hole on the rotating block is sleeved with the surface of the lower fixed rod. Then, the elastic rod is pulled to make it slide with the ferrule, and then the elastic rod is toggled so that the positioning protrusion on the elastic rod reaches the position of the positioning groove, which is blocked by the opening of the elastic rod and the limiting hole, thereby increasing the connection stability between the movable frame and the processing base. Through the setting of the movable frame and the dust filter, the particle size of the dust filter is smaller than the diameter of the dust particles, thereby achieving the blocking of the processing environment, preventing the entry of external impurities during the blowing and cooling process, and effectively protecting;

[0026] 2. In the present invention, the screw member in the first hole is rotated into the interior of the second hole, and then the butterfly nut is manually screwed or the rectangular buckle groove is screwed with the help of a wrench, so that the butterfly nut and the screw thread can be rotated, and the rubber pad on the inner side of the butterfly nut is fitted with the end face of the second hole, thereby achieving the fastening of the two lower half mold bases, reducing the spacing, and improving the molding quality of the aluminum alloy crankcase. After the integrally formed aluminum alloy crankcase is formed, the installation of the fastening assembly is released, and the corresponding lower half mold base is driven to slide in the slide groove by the synchronous cylinder to achieve the demoulding process of the aluminum alloy crankcase;

[0027] 3. In the present invention, the aluminum alloy crankcase is reduced in weight to achieve the purpose of lightweighting, and a cylinder liner with an annular groove is added at the cylinder hole to enhance the wear resistance of the cylinder hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0029] Figure 1 is a process flow chart of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 3 Schematic diagram of the three-dimensional structure of the crankcase of the present invention;

[0032] Figure 4 For the present invention Figure 2 A partial enlarged view of point A in the middle;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating block of the present invention;

[0034] Figure 6 Schematic diagram of the three-dimensional structure of the dust filter and the installation frame of the present invention;

[0035] Figure 7 This is a schematic diagram of the installation structure of the fixed ring block of the present invention;

[0036] Figure 8 For the present invention Figure 2 A partial enlarged view of point B in the middle;

[0037] Figure 9 For the present invention Figure 2 A partial enlarged view of point C in the middle.

[0038] In the figure: 1. Lower mold base; 2. Vertical rod; 3. Transmission plate; 4. Lower fixed rod; 5. Aluminum alloy crankcase; 6. Cylinder liner; 7. Mounting hole; 8. Upper fixed rod; 9. Connecting rod; 10. Rotating block; 11. Limit hole; 12. Positioning groove; 13. Clamping sleeve; 14. Groove; 15. Elastic rod; 16. Clamping groove; 17. Positioning protrusion; 18. Mounting frame; 19. Movable frame; 20. Dust filter; 21. Boss; 22. Fixed ring block; 23. Hole groove 1; 24. Hole groove 2; 25. Screw member; 26. Butterfly nut; 27. Slide; 28. Synchronous cylinder; 29. ​​Mounting seat; 30. Rectangular buckle groove. DETAILED DESCRIPTION

[0039] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0040] See also Figures 1-9 As shown, the present invention provides a refrigerator crankcase lightweighting process, comprising the following steps:

[0041] Step 1: dock and install the two lower mold base halves 1 to realize the assembly of the lower mold base, and fasten the two lower mold base halves 1 through the fastening assembly;

[0042] Step 2: inject aluminum alloy mold liquid, and the hydraulic cylinder pushes the transmission plate 3 to drive the movable mold base, and punches the lower mold base to obtain the aluminum alloy crankcase 5;

[0043] Step 3: Loosen the fastening components and use the synchronous cylinder 28 to drive the corresponding lower mold base 1 to move relative to each other to achieve demoulding;

[0044] Step 4: Pull the dust filter 20 through the movable frame 19 so that the rotating block 10 on the movable frame 19 rotates to the lower fixed rod 4 on the surface of the processing base, and seal the processing base and the transmission plate 3 through the dust filter 20, and use the wind force transmitted by the nozzle to cool the exposed aluminum alloy crankcase 5.

[0045] In step one, the fastening assembly includes a protrusion fixedly connected to the end surfaces of the two lower half mold bases 1, and the surfaces of the protrusions are respectively provided with a hole groove 1 23 and a hole groove 2 24, and the hole groove 1 23 and the hole groove 2 24 are flush, and the interior of the hole groove 1 23 is rotatably connected with a screw member 25, and one end of the screw member 25 passes through the interior of the hole groove 24 and is threadedly connected with a butterfly nut 26, and the outer surface of the butterfly nut 26 is provided with a rectangular buckle groove 30.

[0046] In step one, when the two lower mold bases 1 are close to each other and fit together, the screw member 25 is rotated to pass through the inside of the hole groove 1 23 and the hole groove 2 24, and then the butterfly nut 26 is manually screwed. The butterfly nut 26 and the screw member 25 are threadedly rotated so that the butterfly nut 26 fits with the end face of the hole groove 2 24, thereby achieving the fastening of the two lower mold bases 1.

[0047] In step 2, the aluminum alloy mold liquid is used in conjunction with the movable mold base, the inner cavity of the two lower mold bases 1, the protruding column 21 and the fixed ring block 22 to obtain a formed aluminum alloy crankcase 5.

[0048] In step three, loosen the butterfly nut 26 so that the end of the butterfly nut 26 is away from the end face of the second hole groove 24, release the fixed restriction of the two lower half mold bases 1, and pull the corresponding lower half mold base 1 through the synchronization cylinder 28 to realize the demolding of the aluminum alloy crankcase 5.

[0049] In step four, the dust filter 20 is unfolded by pulling the movable frame 19 downward, and the rotating block 10 on the connecting rod 9 is rotated. The elastic rod 15 slides on the sleeve 13 through the cooperation of the slot 16 and the sleeve 13. The outer surface of the lower fixed rod 4 enters the limiting hole 11 to realize the connection between the movable frame 19 and the processing base.

[0050] In step four, when the lower fixing rod 4 enters the limiting hole 11, the elastic rod 15 and the clamping sleeve 13 slide and drive the positioning protrusion 17 to move upward, and the elastic rod 15 is moved so that the positioning protrusion 17 is stuck in the positioning groove 12, blocking the gap of the limiting hole 11.

[0051] In step 4, in the initial state, the rotating block 10 is connected to the surface of the upper fixed rod 8, and the dust filter 20 is folded and stored by the movable frame 19 and the installation frame 18 being brought closer to each other.

[0052] The present invention also provides a lightweight device for a refrigerator crankcase, comprising four vertical rods 2 installed on the top surface of a processing base, the outer surfaces of the four vertical rods 2 being slidably connected to a transmission plate 3, two mutually fitting lower mold bases 1 being provided in the middle of the top surface of the processing base, a movable mold base used in conjunction with the two lower mold bases 1 being provided in the middle of the bottom surface of the transmission plate 3, and a protective mechanism being provided between the clamping sleeve 13 and the processing base.

[0053] The protection mechanism includes a mounting frame 18 mounted on the outside of the movable mold base and fixedly connected to the surface of the transmission plate 3, a movable frame 19 is provided at the bottom of the mounting frame 18, and a dust filter 20 is provided between the mounting frame 18 and the movable frame 19, a connecting rod 9 is provided on the end surface of the movable frame 19, an upper fixed rod 8 is provided on the end surface of the mounting frame 18, and a rotating block 10 is rotatably connected to the outer surface of the connecting rod 9. A limiting hole 11 is provided on the surface of the rotating block 10, and the limiting hole 11 is used in conjunction with the outer surface of the upper fixed rod 8. The inner bottom surface of the limiting hole 11 is provided with a groove 14, and the surface of the rotating block 10 A positioning groove 12 is provided near the top of the limiting hole 11, and a clamping sleeve 13 is installed on the surface of the rotating block 10 near the bottom of the limiting hole 11. The inside of the clamping sleeve 13 is slidably connected with an elastic rod 15 with a U-shaped structure. The bottom surface of the elastic rod 15 is provided with a clamping groove 16 that slides with the clamping sleeve 13, and the surface of the elastic rod 15 is installed with a positioning protrusion 17 that cooperates with the positioning groove 12; the surface of the processing base is installed with a lower fixed rod 4, and the lower fixed rod 4 and the connecting rod 9 are vertically collinear with the upper fixed rod 8, which improves the accuracy of the connection between the rotating block 10 and the upper fixed rod 4 and the lower fixed rod 8.

[0054] When the aluminum alloy crankcase 5 is cast as a whole, the fastening components between the two lower mold bases 1 are disassembled, and the two lower mold bases 1 lose their restrictive effect. Then, a plurality of nozzles arranged between the movable mold base and the mounting frame 18 are used to blow air to cool down the exposed aluminum alloy crankcase 5. During the blowing process, the transmission plate 3 is located above the two lower mold bases 1. The cooling of the aluminum alloy crankcase 5 by the nozzle is a common method in this field. In the initial state, the rotating block 10 is connected to the surface of the upper fixed rod 8. The dust filter 20 is folded and stored by the mutual approach of the movable frame 19 and the mounting frame 18. When blowing air to cool down, the rotating block 10 is first removed from the upper fixed rod 8 to release the restrictive effect on the dust filter 20. The elastic rod 15 is moved so that the positioning protrusion 17 on the elastic rod 15 leaves the inside of the positioning groove 12. Then, the elastic rod 15 is pulled downward, and the elastic rod 15 slides with the sleeve 13 through the card slot 16. When the positioning protrusion 17 reaches the groove 14, the elastic rod 15 loses the obstruction of the limiting hole 11, and the rotating block 10 is toggled. The rotating block 10 and the connecting rod 9 rotate, and the rotating block 10 moves downward synchronously with the movable frame 19. At this time, the dust filter 20 is unfolded, and the rotating block 10 is rotated to the position of the lower fixed rod 4, and the limiting hole 11 on the rotating block 10 is sleeved with the surface of the lower fixed rod 4. Then, the elastic rod 15 is pulled to slide with the ferrule 13, and then the elastic rod 15 is toggled so that the positioning protrusion 17 on the elastic rod 15 reaches the position of the positioning groove 12, and is blocked by the opening of the elastic rod 15 and the limiting hole 11, thereby increasing the connection stability of the movable frame 19 and the processing base. Through the setting of the movable frame 19 and the dust filter 20, the particle size of the dust filter 20 is smaller than the diameter of the dust particles, thereby achieving the blocking of the processing environment, avoiding the entry of external impurities during the blowing and cooling process, and effectively protecting.

[0055] A fixed ring block 22 is installed on the inner wall of one of the lower half mold bases 1, and a plurality of protrusions 21 are installed on the outside of the fixed ring block 22. The movable mold base is used in conjunction with the two lower half mold bases 1 to obtain a formed aluminum alloy crankcase 5. The same side surface of the aluminum alloy crankcase 5 is provided with a cylinder liner 6 and a plurality of mounting holes 7.

[0056] The aluminum alloy crankcase 5 reduces weight to achieve the purpose of lightweighting, and a cylinder liner 6 with a ring groove is added at the cylinder hole to enhance the wear resistance of the cylinder hole.

[0057] A fastening assembly is provided between the two lower mold bases 1, and the fastening assembly includes a protrusion fixedly connected to the end surface of the two lower mold bases 1, and the surface of the protrusion is respectively provided with a hole groove 1 23 and a hole groove 2 24, and the hole groove 1 23 and the hole groove 2 24 are flush, and the interior of the hole groove 1 23 is rotatably connected with a screw member 25, and one end of the screw member 25 passes through the interior of the hole groove 24 and is threadedly connected with a butterfly nut 26, and the outer surface of the butterfly nut 26 is provided with a rectangular buckle groove 30, and the inner side surface of the butterfly nut 26 is provided with a rubber pad that fits with the end face of the hole groove 24.

[0058] A synchronous cylinder 28 is provided above the processing base on one side close to the lower half mold base 1. A mounting base 29 connected to the processing base is installed at the bottom of the synchronous cylinder 28. The end of the piston rod of the synchronous cylinder 28 is fixed to the surface of the lower half mold base 1. The top surface of the processing base is provided with a slide groove 27 that is slidably connected to the lower half mold base 1.

[0059] When the two lower mold bases 1 are fitted together, the two protrusions are docked, and the screw member 25 in the hole groove 1 23 is rotated into the interior of the hole groove 2 24. Then, the butterfly nut 26 is manually screwed or the rectangular buckle groove 30 is screwed with the help of a wrench, so that the butterfly nut 26 and the screw member 25 can be threadedly rotated. The rubber pad on the inner side of the butterfly nut 26 fits with the end face of the hole groove 24, thereby fastening the two lower mold bases 1, reducing the spacing, and improving the forming quality of the aluminum alloy crankcase 5. After the one-piece aluminum alloy crankcase 5 is formed, the installation of the fastening component is released, and the corresponding lower mold base 1 is driven to slide in the slide groove 27 by the synchronous cylinder 28 to realize the demolding process of the aluminum alloy crankcase 5.

[0060] The top surfaces of the four uprights 2 are fixedly connected to a mounting plate, a hydraulic cylinder is installed in the middle of the top surface of the mounting plate, and the output end of the hydraulic cylinder is fixed to the top surface of the transmission plate 3.

[0061] The transmission plate 3 is driven up and down by a hydraulic cylinder, and the transmission plate 3 and the four vertical rods 2 slide relative to each other, thereby improving the stability of the movement of the transmission plate 3.

[0062] When the present invention is in use, first the screw member 25 in the hole groove 1 23 is rotated into the interior of the hole groove 2 24 , and then the butterfly nut 26 is manually screwed or the rectangular buckle groove 30 is screwed with the help of a wrench, so that the butterfly nut 26 and the screw member 25 can be threadedly rotated, and the rubber pad on the inner side of the butterfly nut 26 fits with the end surface of the hole groove 24 , thereby achieving the fastening of the two lower half mold bases 1, reducing the spacing, and improving the molding quality of the aluminum alloy crankcase 5. After the integrally formed aluminum alloy crankcase 5 is formed, the installation of the fastening assembly is released, and the corresponding lower half mold base 1 is driven to slide in the slide groove 27 by the synchronous cylinder 28 to achieve the demoulding process of the aluminum alloy crankcase 5;

[0063] The aluminum alloy crankcase 5 reduces weight to achieve the purpose of lightweighting, while adding a cylinder liner 6 with a ring groove at the cylinder bore to enhance the wear resistance of the cylinder bore;

[0064] The rotating block 10 is connected to the surface of the upper fixed rod 8. The dust filter 20 is folded and stored by the mutual approach of the movable frame 19 and the mounting frame 18. When blowing and cooling, the rotating block 10 is first removed from the upper fixed rod 8 to release the restriction on the dust filter 20. The elastic rod 15 is toggled so that the positioning protrusion 17 on the elastic rod 15 leaves the inside of the positioning groove 12. Then, the elastic rod 15 is pulled downward. The elastic rod 15 slides with the card slot 16 and the card sleeve 13. When the positioning protrusion 17 reaches the groove 14, the elastic rod 15 loses the obstruction to the limiting hole 11. The rotating block 10 is toggled, and the rotating block 10 and the connecting rod 9 rotate, and the rotating block 10 follows the movable frame 19 synchronously. Move downward, at this time the dust filter 20 is unfolded, the rotating block 10 is rotated to the position of the lower fixed rod 4, and the limiting hole 11 on the rotating block 10 is engaged with the surface of the lower fixed rod 4, then the elastic rod 15 is pulled to make it slide with the clamping sleeve 13, and then the elastic rod 15 is toggled so that the positioning protrusion 17 on the elastic rod 15 reaches the position of the positioning groove 12, and is blocked by the elastic rod 15 and the opening of the limiting hole 11, thereby increasing the connection stability between the movable frame 19 and the processing base. Through the setting of the movable frame 19 and the dust filter 20, the particle size of the dust filter 20 is smaller than the diameter of the dust particles, thereby realizing the blocking of the processing environment, avoiding the entry of external impurities during the blowing and cooling process, and effectively protecting.

[0065] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A refrigerator crankcase lightweighting process, characterized by: The following steps are involved: Step 1: docking and installing the two lower mold bases (1) to realize the combination of the lower mold bases, and fastening the two lower mold bases (1) by fastening components; Step 2: inject aluminum alloy mold liquid, and use the hydraulic cylinder to push the transmission plate (3) to drive the movable mold base, and punch the lower mold base to obtain an aluminum alloy crankcase (5); Step 3: Loosen the fastening components and drive the corresponding lower mold bases (1) to move relative to each other through the synchronous cylinder (28) to achieve demoulding; Step 4, the protection mechanism includes a mounting frame (18) mounted on the outside of the movable mold base and fixedly connected to the surface of the transmission plate (3), a movable frame (19) is provided at the bottom of the mounting frame (18), and a dust filter (20) is provided between the mounting frame (18) and the movable frame (19), a connecting rod (9) is provided on the end surface of the movable frame (19), an upper fixed rod (8) is provided on the end surface of the mounting frame (18), the outer surface of the connecting rod (9) is rotatably connected to a rotating block (10), a limiting hole (11) is provided on the surface of the rotating block (10), the limiting hole (11) is used in conjunction with the outer surface of the upper fixed rod (8), a groove (14) is provided on the bottom surface of the inner cavity of the limiting hole (11), a positioning groove (12) is provided on the surface of the rotating block (10) near the upper limit hole (11), and a clamping sleeve (13) is installed on the surface of the rotating block (10) near the lower limit hole (11), and the inner part of the clamping sleeve (13) is slidably connected to an elastic rod (15) of a U-shaped structure, The bottom surface of the elastic rod (15) is provided with a slot (16) that slides with the sleeve (13), and the surface of the elastic rod (15) is installed with a positioning protrusion (17) that cooperates with the positioning slot (12); the surface of the processing base is installed with a lower fixed rod (4), and the lower fixed rod (4) and the connecting rod (9) and the upper fixed rod (8) are arranged vertically in the same line. By pulling the movable frame (19) downward, the dust filter (20) is unfolded, so that the rotating block (10) on the movable frame (19) is rotated. ) is rotated to the lower fixed rod (4) on the surface of the processing base, and the processing base and the transmission plate (3) are sealed by the dust filter (20), and the exposed aluminum alloy crankcase (5) is cooled by the wind force transmitted by the nozzle. Through the cooperation of the card slot (16) and the card sleeve (13), the elastic rod (15) is realized to slide on the card sleeve (13), and the outer surface of the lower fixed rod (4) enters the limit hole (11), realizing the connection between the movable frame (19) and the processing base.

2. A refrigerator crankcase lightweighting process according to claim 1, characterized in that: In step one, the fastening assembly includes a protrusion fixedly connected to the end surfaces of the two lower half mold bases (1), and the surfaces of the protrusion are respectively provided with a hole groove (23) and a hole groove (24), wherein the hole groove (23) and the hole groove (24) are flush, and the interior of the hole groove (23) is rotatably connected with a screw member (25), one end of the screw member (25) passes through the interior of the hole groove (24) and is threadedly connected with a butterfly nut (26), and the outer surface of the butterfly nut (26) is provided with a rectangular buckle groove (30).

3. A refrigerator crankcase lightweighting process according to claim 2, characterized in that: In step 1, when the two lower mold bases (1) are close to each other and fit together, the screw member (25) is rotated to pass through the inside of the hole groove 1 (23) and the hole groove 2 (24), and then the butterfly nut (26) is manually screwed. The butterfly nut (26) and the screw member (25) are threadedly rotated so that the butterfly nut (26) fits with the end face of the hole groove 2 (24), thereby achieving the fastening of the two lower mold bases (1).

4. A refrigerator crankcase lightweighting process according to claim 3, characterized in that: In step 2, the aluminum alloy mold liquid is used in conjunction with the movable mold base, the inner cavity of the two lower mold bases (1), the protruding column (21) and the fixed ring block (22) to obtain a formed aluminum alloy crankcase (5).

5. A refrigerator crankcase lightweighting process according to claim 4, characterized in that: In step three, the butterfly nut (26) is loosened so that the end of the butterfly nut (26) is away from the end face of the second hole groove (24), thereby releasing the fixed restrictions of the two lower half mold bases (1), and the corresponding lower half mold base (1) is pulled by the synchronous cylinder (28) to realize the demoulding of the aluminum alloy crankcase (5).

6. The refrigerator crankcase lightweighting process according to claim 1, characterized in that: In step 4, when the lower fixing rod (4) enters the limiting hole (11), the elastic rod (15) and the clamping sleeve (13) slide and drive the positioning protrusion (17) to move upward, and the elastic rod (15) is moved so that the positioning protrusion (17) is inserted into the positioning groove (12), thereby blocking the gap of the limiting hole (11).

7. The refrigerator crankcase lightweighting process according to claim 1, characterized in that: In step 4, in the initial state, the rotating block (10) is connected to the surface of the upper fixed rod (8), and the dust filter (20) is folded and stored by the movable frame (19) and the installation frame (18) being brought closer to each other.

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