CN111673070A - Resin sand casting equipment and casting process - Google Patents
Resin sand casting equipment and casting process Download PDFInfo
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- CN111673070A CN111673070A CN202010670004.6A CN202010670004A CN111673070A CN 111673070 A CN111673070 A CN 111673070A CN 202010670004 A CN202010670004 A CN 202010670004A CN 111673070 A CN111673070 A CN 111673070A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D33/00—Equipment for handling moulds
- B22D33/02—Turning or transposing moulds
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Abstract
The invention belongs to precision casting, in particular to resin sand casting equipment and a casting process, which comprise a conveying mechanism and a supporting mechanism arranged on the top surface of the conveying mechanism, wherein the conveying mechanism is in transmission connection with a forming mechanism, the supporting mechanism comprises a supporting plate and supporting columns fixed at four corners of the bottom surface of the supporting plate, and the bottom ends of the supporting columns are fixed on the top surface of the conveying mechanism; when casting, the upper die and the casting part in the lower die which are positioned on one side can be taken out, then a new sand box is loaded and prepared, after casting is completed, the hydraulic cylinder drives the connecting guide plate and the upper die to reset, the conveying mechanism drives the whole forming mechanism to move, the upper die and the lower die which are prepared in advance are pushed to the lower part of the hydraulic cylinder, the hydraulic cylinder is used for pressing down to cast, when the casting is taken out and the new sand box is loaded and prepared, the equipment can continuously perform processing and casting, the equipment downtime is shortened, and the production efficiency is improved.
Description
Technical Field
The invention belongs to precision casting, and particularly relates to resin sand casting equipment and a casting process.
Background
The resin sand plays a role in blocking and isolating between the casting and the casting mold, achieves the purpose of preventing sand adhesion, can effectively prevent high-temperature liquid metal from being oxidized, prevents the casting mold from chemical reaction in the contact process with the high-temperature liquid metal, and can absorb and digest gases containing nitrogen, sulfur, carbon and the like.
Chinese patent publication No. CN109500358A discloses a resin sand casting apparatus and a casting process, which require stopping when casting is completed, taking out a casting, hoisting a new sand box into a mold, modulating, closing the mold for casting, and the apparatus has a long downtime and a low production efficiency, and cannot meet the demand for rapid production.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides resin sand casting equipment and a casting process, which have the characteristic of high production efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: a resin sand casting device and a casting process comprise a conveying mechanism and a supporting mechanism installed on the top surface of the conveying mechanism, wherein the conveying mechanism is connected with a forming mechanism in a transmission mode, the supporting mechanism comprises a supporting plate and supporting columns fixed at four corners of the bottom surface of the supporting plate, the bottom ends of the supporting columns are fixed on the top surface of the conveying mechanism, a hydraulic cylinder is fixedly connected to the middle position of the top surface of the supporting plate and is connected with an external hydraulic station in a transmission mode, the supporting mechanism further comprises three horizontally arranged connecting guide plates, the three connecting guide plates are all located below the supporting plate, the output end of the hydraulic cylinder is fixedly connected with one connecting guide plate in the middle position, the bottom surfaces of the three connecting guide plates are all provided with two sliding grooves corresponding to each other, the forming mechanism comprises a sliding plate and two lower dies fixed on the top surface of the sliding plate, the two upper dies correspond to the two lower dies respectively, two guide rods which are symmetrically arranged are fixedly connected to two ends of the top surface of the sliding plate, sliding sleeves are sleeved on the guide rods in a sliding mode and fixedly connected with the corresponding upper dies through connecting plates, a fixing plate is fixedly connected to the top surface of the upper dies and corresponds to the sliding grooves, and the upper dies are slidably connected with the connecting guide plates through the fixing plates.
Preferably, the transmission mechanism comprises a bearing table, a screw rod and a motor, a transmission groove is formed in the middle position of the top surface of the bearing table, the screw rod is rotatably connected to the inner wall of the transmission groove, the motor is fixed to one side of the bearing table, the output end of the motor is fixedly connected with the screw rod, and the sliding plate is in transmission connection with the screw rod and slides on the top surface of the bearing table.
Preferably, the supporting column is fixed on the top surface of the bearing table.
Preferably, the top surface of the bearing table is provided with two guide grooves which are arranged in parallel, and the transmission groove and the guide grooves are parallel to each other.
Preferably, the two sides of the bottom surface of the sliding plate are fixedly connected with guide blocks, and the guide blocks slide on the inner wall of the guide groove.
Preferably, the top end of the fixed plate is fixedly connected with a sliding block, and the sliding block slides on the inner wall of the sliding groove.
Preferably, four corners of the bottom surface of the bearing table are fixedly connected with pad feet.
Preferably, the thickness of the foot pad is ten centimeters.
A resin casting process using the resin casting apparatus of claim 8, comprising the steps of:
s1: the hydraulic cylinder 23 pulls the connecting guide plate 24 and the upper mold 33 below the connecting guide plate, so that two upper molds 33 are located at the same horizontal height, and three connecting guide plates 24 are located at the same horizontal height.
S2: the flask is set on one of the upper molds 33 and the corresponding lower mold 32, and is prepared.
S3: the conveying mechanism 1 drives the entire molding mechanism 3 to move, the two lower molds 32 on the slide plate 31 move synchronously, the two upper molds 33 and the two lower molds 32 move synchronously under the traction of the guide rods 35, the slide sleeves 36 and the connecting plates 361, the slide blocks 341 on the fixed plate 34 slide in the slide grooves 241 of the three connecting guide plates 24 when the two upper molds 33 move, the upper molds 33 and the lower molds 32 loaded with flasks are slid to the positions below the connecting guide plates 24 at the intermediate positions by the conveying mechanism 1, and the fixed plate 34 of the upper molds 33 is slid to the positions above the connecting guide plates 24 at the intermediate positions by the slide blocks.
S4: the hydraulic cylinder 23 pushes the connecting guide plate 24 downward, and the upper mold 33 moves downward simultaneously and cooperates with the lower mold 32 to perform casting.
S5: in the casting, the cast material in the upper mold 33 and the lower mold 32 on one side may be taken out, and then a new flask may be loaded and prepared.
S6: after casting, the hydraulic cylinder 23 drives the connecting guide plate 24 and the upper mold 33 to return.
S7: the conveying mechanism 1 drives the forming mechanism 3 to integrally move, the upper die 33 and the lower die 32 which are prepared in advance are pushed to the lower portion of the hydraulic cylinder 23, and the hydraulic cylinder 23 is used for pressing down to cast.
Compared with the prior art, the invention has the beneficial effects that:
when casting, the upper die and the casting part in the lower die which are positioned on one side can be taken out, then a new sand box is loaded and prepared, after casting is completed, the hydraulic cylinder drives the connecting guide plate and the upper die to reset, the conveying mechanism drives the whole forming mechanism to move, the upper die and the lower die which are prepared in advance are pushed to the lower part of the hydraulic cylinder, the upper die is connected with the connecting guide plate below the hydraulic cylinder, the hydraulic cylinder is used for pressing down for casting, when the casting is taken out and the new sand box is loaded and prepared, the equipment can be continuously processed and cast, the equipment downtime is shortened, and the production efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the conveying mechanism of the present invention;
FIG. 3 is a schematic view of the forming mechanism of the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 3.
In the figure: 1. a transport mechanism; 101. a transmission groove; 102. a guide groove; 11. a bearing table; 12. a screw rod; 13. a motor; 14. a foot pad; 2. a support mechanism; 21. a support plate; 22. a support pillar; 23. a hydraulic cylinder; 24. connecting the guide plate; 241. a chute; 3. a molding mechanism; 31. a sliding plate; 32. a lower die; 33. an upper die; 34. a fixing plate; 341. a slider; 35. a guide bar; 36. a sliding sleeve; 361. a connecting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: a resin sand casting device and a casting process comprise a conveying mechanism 1 and a supporting mechanism 2 installed on the top surface of the conveying mechanism 1, wherein the conveying mechanism 1 is connected with a forming mechanism 3 in a transmission mode, the supporting mechanism 2 comprises a supporting plate 21 and supporting columns 22 fixed at four corners of the bottom surface of the supporting plate, the bottom ends of the supporting columns 22 are fixed on the top surface of the conveying mechanism 1, a hydraulic cylinder 23 is fixedly connected to the middle position of the top surface of the supporting plate 21, the hydraulic cylinder 23 is connected with an external hydraulic station in a transmission mode, the supporting mechanism 2 further comprises three horizontally arranged connecting guide plates 24, the three connecting guide plates 24 are all located below the supporting plate 21, the output end of the hydraulic cylinder 23 is fixedly connected with one connecting guide plate 24 at the middle position, the bottom surfaces of the three connecting guide plates 24 are all provided with two sliding grooves 241 corresponding to each other, the forming mechanism 3 comprises a sliding plate 31, the two upper dies 33 respectively correspond to the two lower dies 32, two symmetrically-arranged guide rods 35 are fixedly connected to two ends of the top surface of the sliding plate 31, a sliding sleeve 36 is slidably sleeved on each guide rod 35, each sliding sleeve 36 is fixedly connected with the corresponding upper die 33 through a connecting plate 361, a fixing plate 34 is fixedly connected to the top surface of each upper die 33, each fixing plate 34 corresponds to the corresponding sliding groove 241, and each upper die 33 is slidably connected with the corresponding guide plate 24 through the fixing plate 34.
In this embodiment: when in use, the hydraulic cylinder 23 pulls the connecting guide plate 24 and the upper mold 33 below the connecting guide plate 24, so that the two upper molds 33 are located at the same horizontal height, the three connecting guide plates 24 are located at the same horizontal height, the sand box is placed on one upper mold 33 and the lower mold 32 corresponding to the upper mold 33, after the preparation is completed, the conveying mechanism 1 drives the whole forming mechanism 3 to move, the two lower molds 32 on the sliding plate 31 synchronously move, the two upper molds 33 and the two lower molds 32 synchronously move under the pulling of the guide rod 35, the sliding sleeve 36 and the connecting plate 361, the sliding block 341 on the fixing plate 34 slides in the sliding groove 241 of the three connecting guide plates 24 when the two upper molds 33 move, the upper mold 33 and the lower mold 32 loaded with the sand box slide to the lower part of the connecting guide plate 24 at the middle position under the action of the conveying mechanism 1, the fixing plate 34 of the upper mold 33 slides to the connecting guide plate 24 at the middle position through the sliding block 341, the hydraulic cylinder 23 pushes the connecting guide plate 24 to move downwards, the upper die 33 synchronously moves downwards, and the upper die 32 is matched with the lower die for casting, the sliding sleeve 36 slides on the guide bar 35 as the upper mold 33 moves downward, and, as casting proceeds, the castings in the upper and lower molds 33 and 32 on one side can be taken out, and then a new flask can be loaded and prepared, after casting, the hydraulic cylinder 23 drives the connecting guide plate 24 and the upper mold 33 to reset, the conveying mechanism 1 drives the forming mechanism 3 to move integrally, the upper mold 33 and the lower mold 32 which are prepared in advance are pushed to the lower part of the hydraulic cylinder 23, and the upper mold 33 is connected with the connecting guide plate 24 below the hydraulic cylinder 23, is pressed down by the hydraulic cylinder 23 for casting, when the casting is taken out and a new sand box is loaded and prepared, the equipment can continuously carry out processing and casting, the equipment downtime is shortened, and the production efficiency is improved.
Specifically, the conveying mechanism 1 comprises a bearing table 11, a screw rod 12 and a motor 13, a transmission groove 101 is formed in the middle position of the top surface of the bearing table 11, the screw rod 12 is rotatably connected to the inner wall of the transmission groove 101, the motor 13 is fixed on one side of the bearing table 11, the output end of the motor 13 is fixedly connected with the screw rod 12, and a sliding plate 31 is in transmission connection with the screw rod 12 and slides on the top surface of the bearing table 11; the motor 13 drives the screw rod 12 to rotate, and the sliding plate 31 moves along the screw rod 12.
Specifically, the supporting column 22 is fixed on the top surface of the bearing table 11; the support columns 22 serve to connect the carrier table 11 with the support plate 21.
Specifically, the top surface of the bearing table 11 is provided with two guide grooves 102 which are arranged in parallel, the transmission groove 101 and the guide grooves 102 are parallel to each other, two sides of the bottom surface of the sliding plate 31 are fixedly connected with guide blocks, and the guide blocks slide on the inner wall of the guide grooves 102; when the slide plate 31 slides, the guide block slides in the guide groove 102 to guide the sliding of the slide plate 31.
Specifically, the top end of the fixing plate 34 is fixedly connected with a sliding block 341, and the sliding block 341 slides on the inner wall of the sliding groove 241; the sliding block 341 slides in the sliding groove 241, and plays a role of connecting the fixing plate 34 and achieves the purpose of sliding.
Specifically, four corners of the bottom surface of the bearing table 11 are fixedly connected with foot pads 14; providing a fork transport space.
Specifically, the thickness of the foot pad 14 is ten centimeters; sufficient forking space can be provided.
A resin casting process using the resin casting apparatus of claim 8, comprising the steps of:
s1: the hydraulic cylinder 23 pulls the connecting guide plate 24 and the upper dies 33 below the connecting guide plate, so that the two upper dies 33 are positioned at the same horizontal height, and the three connecting guide plates 24 are positioned at the same horizontal height;
s2: placing the sand box on an upper die 33 and a lower die 32 corresponding to the upper die for modulation;
s3: the conveying mechanism 1 drives the whole forming mechanism 3 to move, the two lower dies 32 on the sliding plate 31 move synchronously, the two upper dies 33 and the two lower dies 32 move synchronously under the traction of the guide rods 35, the sliding sleeves 36 and the connecting plates 361, when the two upper dies 33 move, the sliding blocks 341 on the fixing plate 34 slide in the sliding grooves 241 of the three connecting guide plates 24, the upper dies 33 and the lower dies 32 loaded with sand boxes slide to the positions below the connecting guide plates 24 at the middle positions under the action of the conveying mechanism 1, and the fixing plate 34 of the upper dies 33 slides to the connecting guide plates 24 at the middle positions through the sliding blocks;
s4: the hydraulic cylinder 23 pushes the connecting guide plate 24 to move downwards, the upper die 33 synchronously moves downwards and is matched with the lower die 32 for casting;
s5: in the casting, the castings in the upper mold 33 and the lower mold 32 located on one side can be taken out, and then a new flask can be loaded and prepared;
s6: after casting is finished, the hydraulic cylinder 23 drives the connecting guide plate 24 and the upper die 33 to reset;
s7: the transfer mechanism 1 drives the molding mechanism 3 to move as a whole, pushes the upper mold 33 and the lower mold 32 prepared in advance to the lower side of the hydraulic cylinder 23, and performs casting by pressing the hydraulic cylinder 23.
The working principle and the using process of the invention are as follows: when in use, the hydraulic cylinder 23 pulls the connecting guide plate 24 and the upper mold 33 below the connecting guide plate 24, so that the two upper molds 33 are positioned at the same horizontal height, the three connecting guide plates 24 are positioned at the same horizontal height, the sand box is placed on one upper mold 33 and the lower mold 32 corresponding to the upper mold 33, after the preparation is completed, the conveying mechanism 1 drives the whole forming mechanism 3 to move, the two lower molds 32 on the sliding plate 31 synchronously move, the two upper molds 33 and the two lower molds 32 synchronously move under the pulling of the guide rod 35, the sliding sleeve 36 and the connecting plate 361, when the two upper molds 33 move, the sliding block 341 on the fixed plate 34 slides in the sliding grooves 241 of the three connecting guide plates 24, the upper mold 33 and the lower mold 32 loaded with the sand box slide to the lower part of the connecting guide plate 24 at the middle position under the action of the conveying mechanism 1, the fixed plate 34 of the upper mold 33 slides to the connecting guide plate 24 at the middle position through the sliding block, the hydraulic cylinder 23 pushes the connecting guide plate 24 to move downwards, the upper die 33 synchronously moves downwards, and the upper die 32 is matched with the lower die for casting, the sliding sleeve 36 slides on the guide bar 35 as the upper mold 33 moves downward, and, as casting proceeds, the castings in the upper and lower molds 33 and 32 on one side can be taken out, and then a new flask can be loaded and prepared, after casting, the hydraulic cylinder 23 drives the connecting guide plate 24 and the upper mold 33 to reset, the conveying mechanism 1 drives the forming mechanism 3 to move integrally, the upper mold 33 and the lower mold 32 which are prepared in advance are pushed to the lower part of the hydraulic cylinder 23, and the upper mold 33 is connected with the connecting guide plate 24 below the hydraulic cylinder 23, is pressed down by the hydraulic cylinder 23 for casting, when the casting is taken out and a new sand box is loaded and prepared, the equipment can continuously carry out processing and casting, the equipment downtime is shortened, and the production efficiency is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a resin sand casting equipment which characterized in that: the device comprises a conveying mechanism (1) and a supporting mechanism (2) installed on the top surface of the conveying mechanism, wherein the conveying mechanism (1) is connected with a forming mechanism (3) in a transmission manner, the supporting mechanism (2) comprises a supporting plate (21) and supporting columns (22) fixed at four corners of the bottom surface of the supporting plate, the bottom ends of the supporting columns (22) are fixed on the top surface of the conveying mechanism (1), a hydraulic cylinder (23) is fixedly connected to the middle position of the top surface of the supporting plate (21), the hydraulic cylinder (23) is in transmission connection with an external hydraulic station, the supporting mechanism (2) further comprises three horizontally arranged connecting guide plates (24), the three connecting guide plates (24) are all positioned below the supporting plate (21), the output end of the hydraulic cylinder (23) is fixedly connected with one connecting guide plate (24) at the middle position, and two sliding grooves (241) which are supposed to correspond to each other are formed in the bottom surfaces, the forming mechanism (3) comprises a sliding plate (31) and two lower dies (32) fixed on the top surface of the sliding plate, the forming mechanism (3) further comprises two upper dies (33), the two upper dies (33) correspond to the two lower dies (32) respectively, two guide rods (35) which are symmetrically arranged are fixedly connected to two ends of the top surface of the sliding plate (31), sliding sleeves (36) are sleeved on the guide rods (35) in a sliding mode, the sliding sleeves (36) are fixedly connected with the upper dies (33) corresponding to the sliding sleeves through connecting plates (361), a fixing plate (34) is fixedly connected to the top surface of the upper dies (33), the fixing plate (34) corresponds to the sliding grooves (241), and the upper dies (33) are slidably connected with the connecting guide plate (24) through the fixing plates (34).
2. The resin sand casting apparatus as recited in claim 1, wherein: transport mechanism (1) includes plummer (11), lead screw (12) and motor (13), transmission groove (101) have been seted up to the top surface intermediate position department of plummer (11), lead screw (12) rotate to be connected the inner wall of transmission groove (101), motor (13) are fixed one side of plummer (11), just the output of motor (13) with lead screw (12) fixed connection, sliding plate (31) with lead screw (12) transmission is connected, and slides and be in the top surface of plummer (11).
3. The resin sand casting apparatus as recited in claim 2, wherein: the supporting column (22) is fixed on the top surface of the bearing table (11).
4. The resin sand casting apparatus as recited in claim 3, wherein: the top surface of the bearing table (11) is provided with two guide grooves (102) which are arranged in parallel, and the transmission groove (101) and the guide grooves (102) are parallel to each other.
5. The resin sand casting apparatus as recited in claim 4, wherein: and guide blocks are fixedly connected to two sides of the bottom surface of the sliding plate (31), and slide on the inner wall of the guide groove (102).
6. The resin sand casting apparatus as recited in claim 5, wherein: the top end of the fixed plate (34) is fixedly connected with a sliding block (341), and the sliding block (341) slides on the inner wall of the sliding groove (241).
7. The resin sand casting apparatus as recited in claim 6, wherein; four corners of the bottom surface of the bearing table (11) are fixedly connected with pad feet (14).
8. The resin sand casting apparatus as recited in claim 7, wherein; the thickness of the foot pad (14) is ten centimeters.
9. A resin casting process using the resin casting apparatus of claim 8, characterized in that: the method comprises the following steps:
s1: the hydraulic cylinder (23) pulls the connecting guide plate (24) and the upper die (33) below the connecting guide plate, so that two upper dies (33) are located at the same horizontal height, and three connecting guide plates (24) are located at the same horizontal height.
S2: and placing the sand box on one upper die (33) and the corresponding lower die (32) for modulation.
S3: the conveying mechanism 1 drives the forming mechanism (3) to integrally move, the two lower dies (32) on the sliding plate (31) synchronously move, under the traction of the guide rod (35), the sliding sleeve (36) and the connecting plate (361), the two upper dies (33) and the two lower dies (32) move synchronously, when the two upper molds (33) move, the sliding blocks (341) on the fixed plate (34) slide in the sliding grooves (241) of the three connecting guide plates (24), sliding the upper mold (33) and the lower mold (32) loaded with flasks to a position below the connecting guide (24) at an intermediate position by the conveying mechanism (1), the fixed plate (34) of the upper mold (33) is slid onto the connecting guide plate (24) at an intermediate position by the slide block (341).
S4: the hydraulic cylinder (23) pushes the connecting guide plate (24) to move downwards, and the upper die (33) synchronously moves downwards and is matched with the lower die (32) for casting.
S5: when casting, the castings in the upper mold (33) and the lower mold (32) on one side are taken out, and then a new flask is loaded and prepared.
S6: after casting, the hydraulic cylinder (23) drives the connecting guide plate (24) and the upper die (33) to reset.
S7: the conveying mechanism (1) drives the forming mechanism (3) to integrally move, the upper die (33) and the lower die (32) which are prepared in advance are pushed to the lower portion of the hydraulic cylinder (23), and the hydraulic cylinder (23) is used for pressing down to cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010670004.6A CN111673070A (en) | 2020-07-13 | 2020-07-13 | Resin sand casting equipment and casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010670004.6A CN111673070A (en) | 2020-07-13 | 2020-07-13 | Resin sand casting equipment and casting process |
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| CN111673070A true CN111673070A (en) | 2020-09-18 |
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| CN202010670004.6A Pending CN111673070A (en) | 2020-07-13 | 2020-07-13 | Resin sand casting equipment and casting process |
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| CN113414348A (en) * | 2021-06-18 | 2021-09-21 | 安徽博晟亿电力科技有限公司 | High-pressure heating casting device for pig iron production and implementation method thereof |
| CN113414379A (en) * | 2021-06-08 | 2021-09-21 | 安庆中船柴油机有限公司 | Diesel engine cylinder cover casting system |
| CN116652083A (en) * | 2023-03-13 | 2023-08-29 | 江苏珀然股份有限公司 | Commercial car wheel forging device |
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| CN113414379A (en) * | 2021-06-08 | 2021-09-21 | 安庆中船柴油机有限公司 | Diesel engine cylinder cover casting system |
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| CN116652083A (en) * | 2023-03-13 | 2023-08-29 | 江苏珀然股份有限公司 | Commercial car wheel forging device |
| CN116652083B (en) * | 2023-03-13 | 2023-12-12 | 江苏珀然股份有限公司 | Commercial car wheel forging device |
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