CN107695301B - Shell, sand casting mould and rotatable drying device for components of sand casting mould - Google Patents
Shell, sand casting mould and rotatable drying device for components of sand casting mould Download PDFInfo
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- CN107695301B CN107695301B CN201711106736.7A CN201711106736A CN107695301B CN 107695301 B CN107695301 B CN 107695301B CN 201711106736 A CN201711106736 A CN 201711106736A CN 107695301 B CN107695301 B CN 107695301B
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- shell
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- 238000001035 drying Methods 0.000 title claims abstract description 50
- 238000007528 sand casting Methods 0.000 title claims abstract description 24
- 239000000725 suspension Substances 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010114 lost-foam casting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Abstract
The invention discloses a rotatable drying device for a shell, a sand casting mould and components thereof, which comprises a speed reducing motor, a main support seat, a semicircular rotary seat, a semicircular bearing, a rotating device, a square hanging frame and a connecting rod between the frames, wherein the main support seat of a hollow structure also comprises a circular support plate and a ring groove support seat. The square hanging rack and the dried objects placed in the square hanging rack can be revolved by the hanging rack supporting seat in the rotating device driven by the speed reducing motor, and the square hanging rack rotates around the axis of the hanging support shaft under the action of the driving connecting rod and the connecting rod between the hanging racks. The invention can accelerate the drying of the dried object, realize uniform drying, avoid deformation or cracking, improve the yield of castings, and simultaneously is beneficial to forming circulation, so that the drying is quicker, the labor intensity and the production cost are reduced, the manufacturing time of the shell, the sand casting mould and the components thereof is shortened, and the invention has the advantages of simple structure, reasonable design and easy manufacture.
Description
Technical Field
The invention belongs to the technical field of casting mold drying equipment, and particularly relates to a rotatable drying device for a shell, a sand casting mold and components thereof.
Background
In all of the shell casting, investment casting and sand casting processes, it is necessary to dry the shell or mold and its components to reduce casting defects. At present, in investment casting, shell making and drying are generally carried out by placing a shell scattered with sand on a frame, drying the shell by a fan, an air conditioner and a dehumidifier in a workshop, and carrying out the next-layer operation after reaching the drying time required by the process. The main disadvantage of the prior art is that the shell making is very time-consuming and energy-consuming, especially for products with grooves, slits and mesopore structures, the drying time of each layer of such products is 1-2 days longer than that of the common collar products, greatly influencing the production arrangement and the supply period, and seriously reducing the production efficiency. In lost foam casting, the foam model is used for casting after being coated with a layer of coating on the surface and dried, and the prior art adopts natural cooling and drying, so that the efficiency is low.
In sand casting, in order to improve the cavity surface quality and improve the fluidity, it is necessary to brush or dip-coat the surfaces of the mold cavity and the core. If in the casting of automobile engine cylinder body, the psammitolite needs the stoving after the dip-coating, current psammitolite stoving mode adopts the psammitolite to hang on the stoving frame perpendicularly naturally to dry very often, but along with current psammitolite structure to complicacy development, adopts natural suspension mode can make the psammitolite focus of complicated structure unstable and lead to hanging the slope, uses the present operation of stoving frame to be difficult to the shaping and broken core rate is higher, can not batch production. In addition, the prior art scheme has the defects of long drying time and easy deformation of the sand core, thereby not only increasing the cost, but also affecting the quality of cast products.
Therefore, the technical improvement of the existing casting technology at present is a commonly pursued target in the contemporary casting industry. In particular to a sand core drying process, which adopts a novel process technology with small energy consumption, high drying speed, small occupied area, no deformation and no environmental pollution, and is one of the necessary links for the transformation of the casting process. Therefore, how to design a rapid and uniform drying device to dry components such as casting sand molds, mold shells or sand cores and the like, and replace the traditional simple hanging or stacking type drying becomes a problem which needs to be solved in the field.
Some solutions have been proposed in the prior art for the problems associated with drying of shells, sand molds and components thereof. The chinese patent of application number 201120399576.1 discloses a psammitolite stoving frame, including the crossbeam, support column, support frame and the spacing briquetting in the crossbeam both ends, this psammitolite stoving frame is through setting up the support frame that extends to the crossbeam both sides, can hang the psammitolite stoving on the support frame, but the psammitolite can not overturn at the stoving in-process, is heated inhomogeneous. Chinese patent No. 201320290228.X discloses a shell mold drying rack consisting of four longitudinal support bars and square transverse brackets, in which the shell mold is not movable, although the drying rack is movable as a whole. The Chinese patent with application number 201320432828.5 discloses a self-rotating type mould shell drying device, which comprises a driving motor, a worm, a gear and a mould shell bearing rod, wherein the mould shell is hung on the mould shell bearing rod through a hook and is in linear arrangement, the motor drives the worm to rotate, the worm drives the mould shell bearing rod to rotate through the gear, and the rotation of the mould shell can improve the drying effect, but is not suitable for being used in a drying furnace. The Chinese patent with application number 201621133588.9 discloses a shell drying device capable of automatically and quickly drying, which comprises a bracket and a rotating shaft arranged in the middle of the bracket, wherein the top end of the bracket is provided with a motor and a conveyor belt for driving the rotating shaft to rotate, and the rotating shaft is provided with a rotatable turntable and a supporting rod for fixing the shell, so that the drying efficiency and the drying effect can be improved to a certain extent, but the dried shell can only revolve and cannot automatically rotate. The patent application number 201610172995.9 discloses a self-rotating ceramic product processing oven, which comprises a box body, a pushing cylinder, a placing plate, a rotating motor, an upper clamping block and a lower clamping block, and can clamp the placed ceramic product between the upper clamping block and the lower clamping block, and automatically rotate to realize uniform drying, and the dried ceramic product can only revolve in the oven and cannot rotate, so that the drying effect is affected.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a rotatable drying device for a shell, a sand casting mold and components thereof, which can realize the rapid and uniform drying of the shell, the sand casting mold and the components thereof, improve the yield and the drying efficiency of castings, and is convenient to place and clean, saves labor hour and reduces the production cost, and can overcome the defects of the prior art.
The technical problems to be solved by the invention are realized by adopting the following technical scheme.
A rotatable drying device for a shell, a sand casting mould and components thereof comprises a speed reducing motor, a main support seat, a semicircular rotary seat, a semicircular bearing, a rotating device, a square hanging frame and a connecting rod between the frames. The speed reducing motor is fixedly arranged at the center of the top of the main supporting seat and used for providing power for rotation of the rotating device and the square hanging frame. The rotating device is positioned between the main supporting seat and the square hanging frame, the top of the rotating device is arranged on the output shaft of the speed reducing motor and used for hanging and supporting the square hanging frame and transmitting the rotation of the output shaft of the speed reducing motor so as to realize the revolution of the square hanging frame around the axis of the output shaft of the speed reducing motor; meanwhile, the rotating device also cooperates with the inter-frame connecting rod to drive the square hanging frame to realize autorotation. The semicircular rotary seat is embedded on the main support seat, and the upper end of the semicircular rotary seat is connected with the main support seat through two semicircular bearings. The semicircular rotary seat comprises a semicircular supporting plate and an arc-shaped bracket. The inner side end of the semicircular support plate is provided with an arc-shaped stop block, the semicircular support plate is embedded in the main support seat, the top of the arc-shaped support is fixedly connected with the semicircular support plate, and the lower end of the arc-shaped support is provided with a rotary connecting disc for hanging and supporting the rotating device; the lower end of the semicircular rotary seat is connected with the rotating device through a hinge. The square hanging frame is fixedly arranged below the rotating device; the inter-frame connecting rod is positioned below the square hanging frames, and two ends of the inter-frame connecting rod are connected with two adjacent square hanging frames through hinges. The square hanging frame comprises a frame body and a supporting mesh plate, wherein the supporting mesh plate is fixedly arranged at the bottom of the frame body and fixedly connected with the frame body; the top of the frame body is provided with a hanging ring for hanging the dried objects such as the shell, the sand casting mould and the components thereof, and the bottom of the frame body is also provided with a connecting rod seat for installing a connecting rod between frames.
The speed reducing motor adopts a speed reducing motor or a hydraulic motor or a pneumatic motor. The number of the rotary connecting discs in the semicircular rotary seat is 3-6.
The main support seat is of a hollow structure and comprises a round support plate and an annular groove support seat. The circular support plate is used for installing and fixing the speed reducing motor, and the annular groove support seat is used for installing the semicircular bearing. The annular groove supporting seat is positioned right below the circular supporting plate and fixedly connected with the circular supporting plate, and the two semicircular bearings are arranged in the annular groove of the annular groove supporting seat. The semicircular supporting plate is positioned between the semicircular bearing and the circular supporting plate.
The rotating device comprises a hanger supporting seat, a hanging support shaft and a driving connecting rod. The hanger support seat is arranged right below the ring groove support seat and used for installing and supporting a suspension support shaft, the hanger support seat is fixedly arranged on an output shaft of the speed reduction motor and is connected with the output shaft of the speed reduction motor through a flat key and used for transmitting output rotation of the speed reduction motor; the upper end of the suspension fulcrum shaft is arranged on the hanger supporting seat and is connected with the hanger supporting seat through a bearing, and the lower end of the suspension fulcrum shaft is fixedly connected with the top center of the square hanger and is used for fixing and supporting the square hanger; one end of the driving connecting rod is fixedly connected with the lower end of the suspension supporting shaft, and the other end of the driving connecting rod is connected with the rotary connecting disc at the lower end of the semicircular rotary seat through a hinge.
The number of the square hanging frames is 4-20, each two square hanging frames form an autorotation group, and the two square hanging frames in each autorotation group are independently connected through an inter-frame connecting rod; the top of the square hanging frame is provided with a hanging ring, the bottom of the square hanging frame is also provided with a connecting rod seat, and the eccentric distance between the axis of the connecting rod seat and the axis of the hanging support shaft is 1/10-1/3 of the length of the square hanging frame.
The invention can be placed in a drying furnace for use or the main supporting seat is embedded into the furnace top of the drying furnace. When the drying rack is used, firstly, according to the drying process requirements of the dried objects, the dried objects such as the shell, the sand casting mould and the components thereof are hung in the square hanging rack or the dried objects such as the shell, the sand casting mould and the components thereof are placed in the square hanging rack. The square hanger and the dried object placed in the square hanger are rotated around the axis of the hanging support shaft under the action of the driving connecting rod and the connecting rod between the hangers. Thereby realizing uniform drying of the dried objects such as the shell, the sand casting mould, the components and the like.
The beneficial effects of the invention are as follows: compared with the prior art, the shell, the sand casting mould, the components thereof and other dried objects can be hung in the square hanging frame, can be directly placed in the square hanging frame, and can rotate around the axis of the hanging support shaft while revolving around the axis of the hanging frame support seat. The invention can accelerate the drying of the dried objects such as the shell, the sand casting mold and the components thereof, realize uniform drying, avoid the deformation or cracking of the dried objects, improve the yield of castings, and simultaneously is beneficial to forming circulation in the drying furnace, so that the drying is more rapid, the labor intensity of workers and the production cost of enterprises are reduced, the manufacturing time of the shell, the sand casting mold and the components thereof is shortened, and the invention has the advantages of simple structure, reasonable design, easy manufacture and convenient cleaning, and can overcome the defects of the prior art.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the assembly relationship of the present invention;
FIG. 3 is a schematic view of the general structure of the present invention in an inverted state;
FIG. 4 is a schematic view of the main support seat according to the present invention;
FIG. 5 is a full cross-sectional view of the main support seat of the present invention;
fig. 6 is a schematic structural view of a semicircular rotary seat according to the present invention.
Detailed Description
The invention is further described below with reference to specific embodiments and illustrations in order to make the technical means, the creation features, the achievement of the purpose and the effect achieved by the invention easy to understand.
As shown in fig. 1, 2, 3, 4, 5 and 6, a rotatable drying apparatus for a shell, a sand mold and its components comprises a speed reducing motor 1, a main support base 2, a semicircular rotary base 3, a semicircular bearing 4, a rotating device 5, a square hanger 6 and an inter-hanger link 7. The speed reducing motor 1 is fixedly arranged at the top center position of the main supporting seat 2 and is used for providing power for the rotation of the rotating device 5 and the square hanging frame 6. The rotating device 5 is positioned between the main supporting seat 2 and the square hanging frame 6, and the top of the rotating device 5 is arranged on the output shaft of the speed reducing motor 1 and is used for hanging and supporting the square hanging frame 6 and transmitting the rotation of the output shaft of the speed reducing motor 1, so that the revolution of the square hanging frame 6 around the axis of the output shaft of the speed reducing motor 1 is realized; meanwhile, the rotating device 5 also cooperates with the inter-frame connecting rod 7 to drive the square hanging frame 6 to realize autorotation. The semicircular rotary seat 3 is embedded on the main support seat 2, and the upper end of the semicircular rotary seat 3 is connected with the main support seat 2 through two semicircular bearings 4. The semicircular rotary seat 3 comprises a semicircular supporting plate 31 and an arc-shaped bracket 32. The inner side end of the semicircular support plate 31 is provided with an arc-shaped stop block 311, the semicircular support plate 31 is embedded in the main support seat 2, the top of the arc-shaped support 32 is fixedly connected with the semicircular support plate 31, and the lower end of the arc-shaped support 32 is provided with a rotary connecting disc 33 for hanging and supporting the rotating device 5; the lower end of the semicircular rotary seat 3 is connected with the rotating device 5 through a hinge. The square hanging frame 6 is fixedly arranged below the rotating device 5; the inter-frame connecting rod 7 is positioned below the square hanging frames 6, and two ends of the inter-frame connecting rod 7 are connected with two adjacent square hanging frames 6 through hinges. The square hanger 6 comprises a frame body 61 and a supporting mesh plate 62, wherein the supporting mesh plate 62 is fixedly arranged at the bottom of the frame body 61 and fixedly connected with the frame body 61; the top of the frame body 61 is provided with a hanging ring 63 for hanging the dried objects such as the shell, the sand casting mould and the components thereof, and the bottom of the frame body 61 is also provided with a connecting rod seat 64 for installing the inter-frame connecting rod 7.
As shown in fig. 1, 2, 3, 4 and 5, the main support seat 2 has a hollow structure, and includes a circular support plate 21 and a ring groove support seat 22. Wherein, circular backup pad 21 is used for installing and fixed gear motor 1, and annular supporting seat 22 is used for installing semicircle bearing 4. The ring groove supporting seat 22 is located right below the circular supporting plate 21 and fixedly connected with the circular supporting plate 21, and the two semicircular bearings 4 are installed in the ring groove 221 of the ring groove supporting seat 22. The semicircular support plate 31 is located between the semicircular bearing 4 and the circular support plate 21.
As shown in fig. 1, 2 and 3, the rotating device 5 includes a hanger support base 51, a hanger shaft 52 and a driving link 53. The hanger support seat 51 is located right below the ring groove support seat 22 and is used for installing and supporting the hanging support shaft 52, and the hanger support seat 51 is fixedly installed on the output shaft of the speed reduction motor 1 and is connected with the output shaft of the speed reduction motor 1 through a flat key and is used for transmitting output rotation of the speed reduction motor 1; the upper end of the suspension support shaft 52 is arranged on the hanger supporting seat 51 and is connected with the hanger supporting seat 51 through a bearing, and the lower end of the suspension support shaft 52 is fixedly connected with the top center of the square hanger 6 and is used for fixing and supporting the square hanger 6; one end of the driving connecting rod 53 is fixedly connected with the lower end of the suspension shaft 52, and the other end of the driving connecting rod 53 is connected with the rotary connecting disc 33 at the lower end of the semicircular rotary seat 3 through a hinge.
As shown in fig. 1 and 2, the speed reducing motor 1 adopts a speed reducing motor or a hydraulic motor or a pneumatic motor.
As shown in fig. 1, 2 and 3, the number of the square hanging frames 6 is 4-20, and each two square hanging frames 6 form a self-rotation group, and the two square hanging frames 6 in each self-rotation group are independently connected through an inter-frame connecting rod 7; and the eccentricity between the axis of the connecting rod seat 64 and the axis of the suspending support shaft 52 is 1/10-1/3 of the length of the frame body 61.
As shown in fig. 1, 2, 3 and 6, the number of swivel connection plates 33 in the semicircular swivel seat 3 is 3-6.
The invention can be placed in a drying furnace for use or the main support seat 2 is embedded into the furnace top of the drying furnace. When the drying device is used, firstly, according to the drying process requirements of the dried objects, the dried objects such as the shell, the sand casting mould and the components thereof are hung on the hanging ring 63 in the square hanging frame, or the dried objects such as the shell, the sand casting mould and the components thereof are placed on the supporting mesh plate 62 in the square hanging frame. The decelerating motor 1 drives the hanger supporting seat 51 in the rotating device 5 to realize revolution of the square hanger 6 and the dried objects placed in the square hanger 6, and simultaneously the square hanger 6 and the dried objects rotate around the axis of the hanging support shaft 52 under the action of the driving connecting rod 53 and the inter-hanger connecting rod 7, so that uniform drying of the dried objects such as shells, sand casting molds and components thereof is realized.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a rotatable drying device for shell, sand casting mould and subassembly thereof, includes gear motor, main support seat, semi-circular revolving seat, semicircle bearing, rotary device, square stores pylon and inter-frame connecting rod, its characterized in that: the speed reducing motor is fixedly arranged at the center of the top of the main supporting seat; the rotating device is positioned between the main supporting seat and the square hanging frame, and the top of the rotating device is arranged on the output shaft of the speed reducing motor; the semicircular rotary seat is embedded on the main support seat, the upper end of the semicircular rotary seat is connected with the main support seat through two semicircular bearings, and the lower end of the semicircular rotary seat is connected with the rotating device through a hinge; the square hanging frame is fixedly arranged below the rotating device; the inter-frame connecting rod is positioned below the square hanging frames, and two ends of the inter-frame connecting rod are connected with two adjacent square hanging frames through hinges;
the main support seat is of a hollow structure and comprises a circular support plate and an annular groove support seat, wherein the annular groove support seat is positioned right below the circular support plate and fixedly connected with the circular support plate, and two semicircular bearings are arranged in an annular groove of the annular groove support seat;
the semicircular rotary seat comprises a semicircular support plate and an arc-shaped support, wherein an arc-shaped stop block is arranged at the inner side end of the semicircular support plate, the semicircular support plate is embedded in the main support seat and positioned between a semicircular bearing and the circular support plate, the top of the arc-shaped support is fixedly connected with the semicircular support plate, and a rotary connecting disc is arranged at the lower end of the arc-shaped support;
the rotating device comprises a hanger supporting seat, a hanging support shaft and a driving connecting rod, wherein the hanger supporting seat is arranged right below the annular groove supporting seat, is fixedly arranged on an output shaft of the speed reducing motor and is connected with the output shaft of the speed reducing motor through a flat key; the upper end of the suspension fulcrum shaft is arranged on the hanger supporting seat and is connected with the hanger supporting seat through a bearing, and the lower end of the suspension fulcrum shaft is fixedly connected with the top center of the square hanger; one end of the driving connecting rod is fixedly connected with the lower end of the suspension supporting shaft, and the other end of the driving connecting rod is connected with the rotary connecting disc at the lower end of the semicircular rotary seat through a hinge;
the square hanging frame comprises a frame body and a supporting mesh plate, wherein the supporting mesh plate is fixedly arranged at the bottom of the frame body and fixedly connected with the frame body; the top of the frame body is provided with a hanging ring, and the bottom of the frame body is also provided with a connecting rod seat for installing a connecting rod between frames.
2. A shell, sand mould and their components as claimed in claim 1, in which: the speed reducing motor adopts a speed reducing motor or a hydraulic motor or a pneumatic motor.
3. A shell, sand mould and their components as claimed in claim 1, in which: the number of the square hanging frames is 4-20, each two square hanging frames form a self-rotation group, and the two square hanging frames in each self-rotation group are independently connected through an inter-frame connecting rod.
4. A shell, sand mould and their components as claimed in claim 1, in which: the number of the rotary connecting discs in the semicircular rotary seat is 3-6.
5. A shell, sand mould and their components as claimed in claim 1, in which: the eccentric distance between the axis of the connecting rod seat and the axis of the suspension support shaft is 1/10-1/3 of the length of the square hanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106736.7A CN107695301B (en) | 2017-11-10 | 2017-11-10 | Shell, sand casting mould and rotatable drying device for components of sand casting mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106736.7A CN107695301B (en) | 2017-11-10 | 2017-11-10 | Shell, sand casting mould and rotatable drying device for components of sand casting mould |
Publications (2)
| Publication Number | Publication Date |
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| CN107695301A CN107695301A (en) | 2018-02-16 |
| CN107695301B true CN107695301B (en) | 2024-03-15 |
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| CN201711106736.7A Active CN107695301B (en) | 2017-11-10 | 2017-11-10 | Shell, sand casting mould and rotatable drying device for components of sand casting mould |
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| CN108284203A (en) * | 2018-03-16 | 2018-07-17 | 泰州鑫宇精工股份有限公司 | Rotary hanger |
| CN108356233A (en) * | 2018-03-16 | 2018-08-03 | 泰州鑫宇精工股份有限公司 | Configure the formwork drying production line rotatably linked up with |
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| CN109047674B (en) * | 2018-08-15 | 2024-03-26 | 武汉中精金属制品有限公司 | Rotary and revolution hanging mechanism for drying formwork |
| CN109341292B (en) * | 2018-10-31 | 2024-01-30 | 武汉中精金属制品有限公司 | Intelligent adjustable mould shell drying box suitable for intelligent robot shell manufacturing line |
| CN109588461A (en) * | 2018-12-10 | 2019-04-09 | 湖南耶啰耶兔业发展有限公司 | Tanning device is used in a kind of processing of rabbit meat |
| CN109708450B (en) * | 2018-12-28 | 2024-01-30 | 武汉中精金属制品有限公司 | Involute guiding and positioning mechanism |
| CN109807289B (en) * | 2019-03-20 | 2023-09-29 | 浙江宁巍机械科技有限公司 | Intelligent suspension shell manufacturing production line |
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