Low-pressure casting forming die for screw rotor of compressor

Abstract

The invention belongs to the technical field of low-pressure casting, and particularly relates to a compressor screw rotor low-pressure casting forming mold which comprises a bottom plate, a base is fixedly connected to the upper side wall of the bottom plate, pouring gates are formed in the side walls of the bottom plate and the base, and a mold body is fixedly connected to the upper side wall of the base. The upper side wall of the mold body is fixedly connected with four guide columns, and the upper ends of the four guide columns are fixedly connected with the same top plate. After the screw rotor in the forming die is cast and taken out, impurities such as molten metal and materials remaining on the inner wall of a cavity of the die can be automatically cleaned, next casting is prevented from being affected, meanwhile, the abrasion degree in the cavity is automatically detected, and after it is detected that the inner wall of the cavity is abraded, the screw rotor is automatically removed. And an operator can be reminded in time to repair the cavity, so that the die-casting quality of the compressor screw rotor is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of low-pressure casting, and in particular relates to a low-pressure casting mold for a compressor screw rotor. Background Art

[0002] Screw compressors are widely used due to their high reliability, convenient operation and maintenance, and good dynamic balance. The processing of the screw rotor, an important part of the screw compressor, has become the primary problem for researchers. Currently, the main methods for processing screw rotors are: casting method, grinding, milling, and hobbing. Since the grinding, milling, and hobbing methods have high production costs and complex processing processes, while low-pressure casting has a lower cost and a simple processing process, low-pressure casting of screw rotors is widely adopted. For example, a low-pressure casting mold for a compressor screw rotor proposed in Patent Publication No. CN116689737A.

[0003] When casting a compressor screw rotor using a low-pressure casting mold, during the filling stage, the molten metal rushes into the mold cavity with a certain speed and pressure. This high-speed flowing molten metal continuously exerts a strong scour on the surface of the mold cavity. As the number of castings accumulates, the surface material of the mold is gradually eroded and worn. In addition, when the screw rotor casting enters the demolding process, the relative movement and friction between the casting and the mold surface further exacerbate the wear between the two. Since the inner wall of the mold cavity is in a relatively concealed position, it is difficult for operators to observe its condition in real time and comprehensively, and it is even more impossible to repair the worn parts in a timely manner. If the worn mold is continuously used, the cavity size will inevitably change, resulting in a significant reduction in the dimensional accuracy of the mold. As a casting with extremely strict precision requirements, even a slight dimensional change in the mold for the compressor screw rotor may seriously interfere with the dimensional accuracy of the casting, thereby affecting its assembly performance and ultimately causing a significant increase in the rejection rate of the casting.

[0004] Therefore, a low-pressure casting mold for a compressor screw rotor is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-pressure casting mold for a compressor screw rotor in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a compressor screw rotor low-pressure casting mold, comprising a bottom plate, the upper side wall of the bottom plate is fixedly connected to a base, the side walls of the bottom plate and the base are both provided with casting ports, the upper side wall of the base is fixedly connected to a mold body, the upper side wall of the mold body is fixedly connected to four guide columns, the upper ends of the four guide columns are fixedly connected to the same top plate, the upper side wall of the top plate is fixedly connected to a hydraulic cylinder, the movable end of the hydraulic cylinder passes through the top plate and is fixedly connected to a lifting seat, the upper side wall of the bottom plate is fixedly connected to a control cabinet, and also includes: A clamping assembly, arranged on the lower side wall of the lifting seat, for taking out the casted casting; A detection component is arranged on the upper side wall of the bottom plate. The detection component is located behind the base and is used to detect the wear condition of the mold body.

[0007] Preferably, the clamping assembly includes a connecting ring fixedly connected to the lower side wall of the lifting seat, the upper side wall of the mold body is provided with a placement groove matching the connecting ring, the inner wall of the connecting ring is rotatably connected to a rotating ring through a bearing, the inner wall of the connecting ring is fixedly connected to a clamping motor, the clamping motor is connected to the rotating ring through a gear ring assembly, the inner walls on both sides of the rotating ring are fixedly connected to clamping electric push rods, and the moving end of the clamping electric push rod is fixedly connected to a clamping seat.

[0008] Preferably, the detection component includes a screw linear module fixedly connected to the side wall of the bottom plate, the movable end of the screw linear module is fixedly connected to the lifting plate, the front side wall of the lifting plate is fixedly connected to the detection electric push rod, the movable end of the detection electric push rod is fixedly connected to the square plate, the front side wall of the square plate is fixedly connected to a curved pipe, the front side of the curved pipe is connected to an ultrasonic component, the front side wall of the square plate is fixedly connected to an air pump, the air outlet end of the air pump is connected to the curved pipe, the lower end of the curved pipe is fixedly connected to a round cover, the lower end of the round cover is rotatably connected to a disc, the disc is a hollow structure, and the outer wall of the disc is connected to A scraper block is matched with the inner cavity of the mold body, and a detection cavity is provided inside the scraper block. The detection cavity is an L-shaped structure, and the lower end of the detection cavity is connected with the outside world. An air outlet is provided at the end of the detection cavity away from the disc, and a placement plate is fixedly connected to the lower inner wall of the detection cavity. The side wall of the placement plate away from the air outlet is connected to a piston block through a spring. The detection cavity and the disc are fixedly connected by the same inflation tube, a control valve is provided in the inflation tube, and a trigger switch is provided on the side wall of the detection cavity. The trigger switch is electrically connected to the corresponding control valve through a control cabinet, and an analysis component is provided on the side wall of the piston block.

[0009] Preferably, the analysis component includes a bent rod and an analysis frame. The bent rod is connected to the side wall of the piston block near the air outlet. The analysis frame is fixedly connected to the end of the bent rod away from the piston block. A metal wheel is rotatably connected to the inner wall of the analysis frame. An insulating film is provided on the surface of the metal wheel. A transfer plate is fixedly connected to the lower side wall of the metal wheel. An arc-shaped seat matching the transfer plate is fixedly connected to the upper side wall of the analysis frame. The arc-shaped seat is electrically connected to an external power source. A conduction plate is embedded in the upper side wall of the detection cavity. The conduction plate is electrically connected to the control cabinet. Two blocking plates are fixedly connected to the lower inner wall of the analysis frame and located on both sides of the arc-shaped seat.

[0010] Preferably, the ultrasonic component includes an installation ring. The installation ring is fixedly connected to a bent pipe through a bracket. An ultrasonic ring is rotatably connected to the inner wall of the installation ring through a bearing. An ultrasonic probe is fixedly connected to the inner wall of the ultrasonic ring. The ultrasonic probe is electrically connected to the control cabinet. A driving motor is fixedly connected to the upper side wall of the installation ring. An output end of the driving motor is fixedly connected to a rubber disc. The rubber disc contacts the ultrasonic ring.

[0011] Preferably, two short pipes are fixedly communicated with the lower side wall of the disc. The lower ends of the two short pipes are fixedly communicated with the same annular pipe. A plurality of jet heads are fixedly communicated with the outer wall of the annular pipe.

[0012] Preferably, an annular cooling cavity is formed inside the mold body. A threaded pipe is fixedly connected to the inner wall of the cooling cavity. A liquid inlet pipe is fixedly communicated with the liquid inlet end of the threaded pipe. A liquid outlet pipe is fixedly communicated with the liquid outlet end of the threaded pipe.

[0013] Preferably, a filtering mechanism is connected to the rear side wall of the mold body. One end of the liquid inlet pipe away from the threaded pipe is communicated with the filtering mechanism.

[0014] Compared with the existing technology, the advantages of a low-pressure die casting forming mold for a compressor screw rotor are as follows: 1. By providing the detection component, after the screw rotor inside the forming mold is cast and taken out, the metal liquid, materials and other impurities remaining on the inner wall of the mold cavity can be automatically cleaned to prevent affecting the next casting. At the same time, the wear degree inside the cavity is automatically detected. When it is detected that the inner wall of the cavity is worn, the operator can be reminded in time to repair the cavity, thereby ensuring the die casting quality of the compressor screw rotor.

[0015] 2. By providing the ultrasonic component, after the screw rotor in the mold is taken out, the die casting quality of the screw rotor can be automatically detected. When it is detected that the die casting quality of the screw rotor is poor, the operator can be reminded in time to scrap the casting, thereby ensuring the qualified rate of the screw rotor.

[0016] 3. By means of the provided cooling cavity, threaded pipe, liquid inlet pipe, liquid outlet pipe and filtering mechanism, after the mold cavity is filled with molten metal, the cooling rate of the molten metal can be accelerated, the solidification rate of the screw rotor casting can be increased, and the coolant can be automatically filtered to avoid problems such as blockage of the pipeline caused by impurities in the coolant. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 2 It is a schematic internal structure diagram of the base and the mold body in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 3 It is a schematic structural diagram of a detection component in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 4 It is a schematic diagram of the positional relationship between an air pump and a square plate in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 5 It is a schematic internal structure diagram of a disc and a scraping block in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 6 It is a schematic internal structure diagram of a detection cavity in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 7 It is a schematic structural diagram of an analysis component in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 8 It is a schematic diagram of the positional relationship between a transfer plate and an arc seat in a low-pressure casting mold for a compressor screw rotor provided by the present invention; Figure 9 It is a schematic structural diagram of an ultrasonic component in a low-pressure casting mold for a compressor screw rotor provided by the present invention.

[0018] In the figure: 1 bottom plate, 2 base, 3 casting port, 4 mold body, 5 guide column, 6 top plate, 7 hydraulic cylinder, 8 lifting seat, 9 control cabinet, 10 clamping assembly, 101 connecting ring, 102 rotating circle, 11 clamping motor, 12 clamping electric push rod, 13 clamping seat, 14 detection assembly, 141 screw linear module, 142 lifting plate, 15 detection electric push rod, 16 square plate, 17 elbow, 18 air pump, 19 round cover, 20 disc, 21 scraper, 22 detection cavity, 23 air outlet, 24 placement plate, 25 piston block, 26 inflation tube, 27 control valve, 28 trigger switch, 29 analysis component, 291 bending rod, 292 analysis frame, 30 metal wheel, 31 insulating film, 32 transfer plate, 33 arc seat, 34 conduction plate, 35 blocking plate, 36 ultrasonic component, 361 mounting ring, 362 ultrasonic ring, 37 ultrasonic probe, 38 driving motor, 39 rubber disk, 40 short tube, 41 ring tube, 42 jet head, 43 cooling chamber, 44 threaded tube, 45 liquid inlet pipe, 46 liquid outlet pipe, 47 filtering mechanism. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1-9 As shown, a compressor screw rotor low-pressure casting mold comprises a bottom plate 1, the upper side wall of the bottom plate 1 is fixedly connected to a base 2, the side walls of the bottom plate 1 and the base 2 are both provided with a casting port 3, the upper side wall of the base 2 is fixedly connected to a mold body 4, the upper side wall of the mold body 4 is fixedly connected to four guide columns 5, the upper ends of the four guide columns 5 are fixedly connected to the same top plate 6, the upper side wall of the top plate 6 is fixedly connected to a hydraulic cylinder 7, the moving end of the hydraulic cylinder 7 passes through the top plate 6 and is fixedly connected to a lifting seat 8, the upper side wall of the bottom plate 1 is fixedly connected to a control cabinet 9, and further comprises: The clamping assembly 10 is arranged on the lower side wall of the lifting seat 8 and is used to take out the cast casting. The clamping assembly 10 includes a connecting ring 101 fixedly connected to the lower side wall of the lifting seat 8. The upper side wall of the mold body 4 is provided with a placement groove that matches the connecting ring 101. The inner wall of the connecting ring 101 is rotatably connected with a rotating circle 102 through a bearing. The inner wall of the connecting ring 101 is fixedly connected with a clamping motor 11. The clamping motor 11 is transmission-connected to the rotating circle 102 through a gear ring assembly. The inner walls of both sides of the rotating circle 102 are fixedly connected with clamping electric push rods 12. The moving end of the clamping electric push rod 12 is fixedly connected with a clamping seat 13, which can take out the casted screw rotor; The detection component 14 is arranged on the upper side wall of the bottom plate 1. The detection component 14 is located behind the base 2 and is used to detect the wear condition of the mold body 4. The detection component 14 includes a screw linear module 141 fixedly connected to the upper side wall of the bottom plate 1. The moving end of the screw linear module 141 is fixedly connected with a lifting plate 142. The front side wall of the lifting plate 142 is fixedly connected with a detection electric push rod 15. The moving end of the detection electric push rod 15 is fixedly connected with a square plate 16. The front side wall of the square plate 16 is fixedly and communicatively connected with an elbow pipe 17. The front side of the elbow pipe 17 is connected with an ultrasonic component 36. The front side wall of the square plate 16 is fixedly connected with an air pump 18. The air outlet end of the air pump 18 is communicated with the elbow pipe 17. The lower end of the elbow pipe 17 is fixedly and communicatively connected with a round cover 19. The lower end of the round cover 19 is rotationally and communicatively connected with a disc 20. The disc 20 is of a hollow structure. The outer wall of the disc 20 is connected with a scraping block 21 that matches the inner cavity of the mold body 4. A detection cavity 22 is formed inside the scraping block 21. The detection cavity 22 is of an L-shaped structure and the lower end of the detection cavity 22 communicates with the outside. An air outlet 23 is formed at one end of the detection cavity 22 away from the disc 20. A placement plate 24 is fixedly connected to the lower side inner wall of the detection cavity 22. A piston block 25 is connected to the side wall of the placement plate 24 away from the air outlet 23 through a spring. A charging pipe 26 is fixedly and communicatively connected between the detection cavity 22 and the disc 20. A control valve 27 is arranged inside the charging pipe 26. A trigger switch 28 is arranged on the side wall of the detection cavity 22. The trigger switch 28 is electrically connected to the corresponding control valve 27 through a control cabinet 9. An analysis component 29 is arranged on the side wall of the piston block 25, which can automatically detect the wear degree inside the cavity. When it is detected that the inner wall of the cavity is worn, the operator can be reminded in time to repair the cavity, thus ensuring the die-casting quality of the compressor screw rotor. The analysis component 29 includes a bent rod 291 and an analysis frame 292. The bent rod 291 is connected to the side wall of the piston block 25 close to the air outlet 23. The analysis frame 292 is fixedly connected to the end of the bent rod 291 away from the piston block 25. A metal wheel 30 is rotatably connected to the inner wall of the analysis frame 292. An insulating film 31 is arranged on the surface of the metal wheel 30. A transfer plate 32 is fixedly connected to the lower side wall of the metal wheel 30. An arc seat 33 that matches the transfer plate 32 is fixedly connected to the upper side wall of the analysis frame 292. The arc seat 33 is electrically connected to an external power supply. A conduction plate 34 is embedded in the upper side wall of the detection cavity 22. The conduction plate 34 is electrically connected to the control cabinet 9. Two blocking plates 35 located on both sides of the arc seat 33 are fixedly connected to the lower side inner wall of the analysis frame 292, which can detect whether there are dents inside the cavity.

[0021] The ultrasonic component 36 includes an installation ring 361. The installation ring 361 is fixedly connected through a bracket and an elbow 17. The inner wall of the installation ring 361 is rotatably connected with an ultrasonic ring 362 through a bearing. The inner wall of the ultrasonic ring 362 is fixedly connected with an ultrasonic probe 37. The ultrasonic probe 37 is electrically connected to the control cabinet 9. The upper side wall of the installation ring 361 is fixedly connected with a driving motor 38. The output end of the driving motor 38 is fixedly connected with a rubber disc 39. The rubber disc 39 contacts the ultrasonic ring 362. After taking out the screw rotor in the mold, it can automatically detect the die-casting quality of the screw rotor. When it is detected that the die-casting quality of the screw rotor is poor, it can timely remind the operator to scrap the casting, thus ensuring the qualified rate of the screw rotor.

[0022] Two short pipes 40 are fixedly communicated with the lower side wall of the disc 20. The lower ends of the two short pipes 40 are fixedly communicated with the same annular pipe 41. A plurality of air jet heads 42 are fixedly communicated with the outer wall of the annular pipe 41, which can automatically clean impurities such as residual metal liquid and materials on the inner wall of the mold cavity.

[0023] An annular cooling cavity 43 is formed inside the mold body 4. The inner wall of the cooling cavity 43 is fixedly connected with a threaded pipe 44. The liquid inlet end of the threaded pipe 44 is fixedly communicated with a liquid inlet pipe 45. The liquid outlet end of the threaded pipe 44 is fixedly communicated with a liquid outlet pipe 46. The rear side wall of the mold body 4 is connected with a filtering mechanism 47. One end of the liquid inlet pipe 45 away from the threaded pipe 44 is communicated with the filtering mechanism 47. After filling the mold cavity with metal liquid, it can accelerate the cooling speed of the metal liquid, speed up the solidification speed of the screw rotor casting, and can automatically filter the coolant to avoid the problem that impurities in the coolant will cause pipeline blockage.

[0024] The operating principle of the present invention is described as follows: Align the casting port 3 below the bottom plate 1 with the lifting pipe of the low-pressure casting equipment, and then introduce compressed air into the pressure tank inside the casting equipment, so that the molten metal inside the casting equipment enters the cavity inside the mold body 4 through the casting port 3, and the gas inside the cavity is discharged through the exhaust holes provided inside the mold body 4. In the initial state, the lifting seat 8 fits with the upper surface of the mold body 4, and a casting groove communicating with the cavity is also provided on the lower side wall of the lifting seat 8. Part of the molten metal will enter the casting groove. When the molten metal enters the cavity, the control cabinet 9 will control the external conveying component to send cooling water into the threaded pipe 44 through the liquid inlet pipe 45, and use the threaded pipe 44 to carry away the heat of the molten metal and discharge it through the liquid outlet pipe 46. After cooling for ten minutes, the control cabinet 9 will control the external conveying component to stop working, and control the hydraulic cylinder 7 to work. The hydraulic cylinder 7 will drive the lifting seat 8 to move slowly upward. And when the hydraulic cylinder 7 drives the lifting seat 8 to move upward for two seconds, the control cabinet 9 will control the clamping electric push rod 12 to work. The clamping electric push rod 12 will drive the clamping seat 13 to move towards the upper end of the casting, and use the two clamping seats 13 to clamp the upper end of the casting. At the same time, the control cabinet 9 will also control the clamping motor 11 to work. The clamping motor 11 controls the rotation of the rotating ring 102 through the gear and ring gear transmission component. The rotating ring 102 will drive the clamping electric push rod 12 and the clamping seat 13 to rotate together, and use the clamping seat 13 to drive the casting to rotate slowly (the outer shape of the screw rotor assembly is a spiral structure and can rotate to take out the screw rotor from the mold body 4). When the hydraulic cylinder 7 drives the screw rotor to move upward to the set position through the lifting seat 8 and the clamping component 10, the control cabinet 9 will control the detection electric push rod 15 to work, so that the detection electric push rod 15 drives the square plate 16, the elbow pipe 17 and the ultrasonic component 36 to move, so that the ultrasonic ring 362 moves to directly below the casting. Then the control cabinet 9 controls the screw rod linear module 141 to work, so that the screw rod linear module 141 drives the ultrasonic ring 362 to move upward. At the same time, the control cabinet 9 will also control the ultrasonic probe 37 and the driving motor 38 to work. The driving motor 38 drives the ultrasonic ring 362 and the ultrasonic probe 37 to rotate together through the rubber disc 39, and uses the ultrasonic probe 37 to detect the defects of the screw rotor. When defects are detected in the screw rotor, the ultrasonic probe 37 will transmit the data to the control cabinet 9, and the operator can view the detection data of the screw rotor through the control cabinet 9 and scrap the defective castings, thereby ensuring the yield rate of the screw rotor; After the screw rotor is detected by the ultrasonic component 36, the control cabinet 9 will drive the ultrasonic component 36 to move downward from the outside of the screw rotor through the lead screw linear module 141. Then, the control cabinet 9 controls the detection electric push rod 15 to continue working, so that the disc 20 moves above the cavity of the mold body 4. Then, the control cabinet 9 controls the lead screw linear module 141 to work, driving the disc 20 and multiple scraping blocks 21 on the surface of the disc 20 to move downward together (the shapes of the multiple scraping blocks 21 are the same as the shape of the cavity inside the mold body 4, and the placement positions of the scraping blocks 21 and the cavity correspond to each other). At the same time, the control cabinet 9 also controls the air pump 18 to work. The air pump 18 will transport external gas to the disc 20 through the elbow pipe 17 and the round cover 19. Most of the gas will be ejected through the short pipe 40, the ring pipe 41 and multiple air jet heads 42 to clean the impurities attached to the inner wall of the cavity (a small amount of residues can be scraped off by the scraping blocks 21). A small amount of gas will be transported to the detection cavity 22 through the air charging pipe 26 and discharged through the air outlet 23. When the scraping block 21 contacts the inner wall of the cavity, the air outlet 23 will be blocked, and a small amount of gas will push the piston block 25 to move, so that the piston block 25 drives the analysis component 29 to move away from the placement plate 24. When the piston block 25 presses the trigger switch 28 during the movement, the trigger switch 28 will control the corresponding control valve 27 to close through the control cabinet 9, so as to block the air charging pipe 26, and the external gas will not continue to be transported to the detection cavity 22. When the scraping block 21 passes through the worn area inside the cavity (the surface of the scraping block 21 is electroplated with a layer of hard, bright and wear-resistant chromium layer, which improves the wear resistance of the scraping block 21), the worn area of the cavity is uneven. When the air outlet 23 passes through this area, the air outlet 23 and the inner wall of the cavity are no longer in a sealed state, and the gas inside the detection cavity 22 will be discharged through the air outlet 23 and the indentation inside the cavity, reducing the air pressure inside the detection cavity 22. Under the action of the spring force, the piston block 25 will drive the analysis component 29 to move towards the placement plate 24; The piston block 25 will drive the bent rod 291 and the analysis frame 292 to move towards the placement plate 24. The upper part of the metal wheel 30 inside the analysis frame 292 contacts the conduction plate 34. When the analysis frame 292 moves towards the placement plate 24, the metal wheel 30 will rotate a certain angle, so that the insulating film 31 on the surface of the metal wheel 30 rotates to the lower part, and the metal part of the metal wheel 30 contacts the conduction plate 34. The metal wheel 30 is electrically connected to the external power supply through the transfer plate 32 and the arc seat 33, and the conduction plate 34 is electrically connected to the control cabinet 9. When the metal part of the metal wheel 30 contacts the conduction plate 34, an electrical signal can be transmitted to the control cabinet 9. After receiving this electrical signal, the control cabinet 9 will control the buzzer module inside to emit a prompt sound to remind the operator to timely repair the cavity inside the mold body 4, thus ensuring the die-casting quality of the compressor screw rotor.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A compressor screw rotor low-pressure casting mold, comprising a bottom plate (1), the upper side wall of the bottom plate (1) is fixedly connected to a base (2), the side walls of the bottom plate (1) and the base (2) are both provided with a casting port (3), the upper side wall of the base (2) is fixedly connected to a mold body (4), the upper side wall of the mold body (4) is fixedly connected to four guide columns (5), the upper ends of the four guide columns (5) are fixedly connected to the same top plate (6), the upper side wall of the top plate (6) is fixedly connected to a hydraulic cylinder (7), the movable end of the hydraulic cylinder (7) passes through the top plate (6) and is fixedly connected to a lifting seat (8), the upper side wall of the bottom plate (1) is fixedly connected to a control cabinet (9), characterized in that: Also includes: A gripping assembly (10) is arranged on the lower side wall of the lifting seat (8) and is used to take out the casted casting; A detection component (14) is arranged on the upper side wall of the bottom plate (1); the detection component (14) is located behind the base (2) and is used to detect the wear condition of the mold body (4).

2. A compressor screw rotor low-pressure casting mold according to claim 1, characterized in that: The gripping assembly (10) comprises a connecting ring (101) fixedly connected to the lower side wall of the lifting seat (8); the upper side wall of the mold body (4) is provided with a placement groove that matches the connecting ring (101); the inner wall of the connecting ring (101) is rotatably connected to a rotating ring (102) via a bearing; the inner wall of the connecting ring (101) is fixedly connected to a gripping motor (11); the gripping motor (11) is transmission-connected to the rotating ring (102) via a gear ring assembly; the inner walls on both sides of the rotating ring (102) are fixedly connected to gripping electric push rods (12); and the movable end of the gripping electric push rod (12) is fixedly connected to a clamping seat (13).

3. A compressor screw rotor low-pressure casting mold according to claim 1, characterized in that: The detection component (14) comprises a screw linear module (141) fixedly connected to the upper side wall of the bottom plate (1); the movable end of the screw linear module (141) is fixedly connected to a lifting plate (142); the front side wall of the lifting plate (142) is fixedly connected to a detection electric push rod (15); the movable end of the detection electric push rod (15) is fixedly connected to a square plate (16); the front side wall of the square plate (16) is fixedly connected to a curved pipe (17); the front side of the curved pipe (17) is connected to an ultrasonic component (36); the front side wall of the square plate (16) is fixedly connected to an air pump (18); the air outlet end of the air pump (18) is connected to the curved pipe (17); the lower end of the curved pipe (17) is fixedly connected to a round cover (19); the lower end of the round cover (19) is rotatably connected to a disc (20); the disc (20) is a hollow structure; the outer wall of the disc (20) is connected to a mold body ( 4) a scraper block (21) with inner cavities matching each other, wherein a detection cavity (22) is provided inside the scraper block (21), wherein the detection cavity (22) is of an L-shaped structure, and the lower end of the detection cavity (22) is in communication with the outside, and an air outlet (23) is provided at one end of the detection cavity (22) away from the disc (20), a placement plate (24) is fixedly connected to the lower inner wall of the detection cavity (22), and a piston block (25) is connected to the side wall of the placement plate (24) away from the air outlet (23) via a spring, and the detection cavity (22) and the disc (20) are fixedly connected via a same inflation tube (26), and a control valve (27) is provided in the inflation tube (26), and a trigger switch (28) is provided on the side wall of the detection cavity (22), and the trigger switch (28) is electrically connected to the corresponding control valve (27) via a control cabinet (9), and an analysis component (29) is provided on the side wall of the piston block (25).

4. A compressor screw rotor low-pressure casting mold according to claim 3, characterized in that: The analysis component (29) comprises a bent rod (291) and an analysis frame (292), wherein the bent rod (291) is connected to a side wall of the piston block (25) close to the gas outlet (23), and the analysis frame (292) is fixedly connected to an end of the bent rod (291) away from the piston block (25). The inner wall of the analysis frame (292) is rotatably connected to a metal wheel (30), and an insulating film (31) is provided on the surface of the metal wheel (30). The lower side wall of the metal wheel (30) is A transfer plate (32) is fixedly connected, an arc seat (33) matching the transfer plate (32) is fixedly connected to the upper side wall of the analysis rack (292), the arc seat (33) is electrically connected to an external power supply, a conduction plate (34) is inlaid on the upper side wall of the detection cavity (22), the conduction plate (34) is electrically connected to the control cabinet (9), and two blocking plates (35) located on both sides of the arc seat (33) are fixedly connected to the lower inner wall of the analysis rack (292).

5. The compressor screw rotor low-pressure casting mold according to claim 3, characterized in that: The ultrasonic component (36) comprises a mounting ring (361), the mounting ring (361) being fixedly connected via a bracket and a bent pipe (17), the inner wall of the mounting ring (361) being rotatably connected to an ultrasonic ring (362) via a bearing, the inner wall of the ultrasonic ring (362) being fixedly connected to an ultrasonic probe (37), the ultrasonic probe (37) being electrically connected to a control cabinet (9), the upper side wall of the mounting ring (361) being fixedly connected to a drive motor (38), the output end of the drive motor (38) being fixedly connected to a rubber disk (39), the rubber disk (39) being in contact with the ultrasonic ring (362).

6. A compressor screw rotor low-pressure casting mold according to claim 3, characterized in that: Two short tubes (40) are fixedly connected to the lower side wall of the disc (20), the lower ends of the two short tubes (40) are fixedly connected to the same annular tube (41), and the outer wall of the annular tube (41) is fixedly connected to a plurality of spray heads (42).

7. A compressor screw rotor low-pressure casting mold according to claim 1, characterized in that: A cooling cavity (43) of an annular structure is provided inside the mold body (4); a threaded tube (44) is fixedly connected to the inner wall of the cooling cavity (43); a liquid inlet end of the threaded tube (44) is fixedly connected to a liquid inlet tube (45); and a liquid outlet end of the threaded tube (44) is fixedly connected to a liquid outlet tube (46).

8. A compressor screw rotor low-pressure casting mold according to claim 7, characterized in that: The rear side wall of the mold body (4) is connected to a filtering mechanism (47), and one end of the liquid inlet pipe (45) away from the threaded pipe (44) is in communication with the filtering mechanism (47).

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