CN106514298B - Double-platform tandem type combined sliding table - Google Patents
Double-platform tandem type combined sliding table Download PDFInfo
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- CN106514298B CN106514298B CN201611063940.0A CN201611063940A CN106514298B CN 106514298 B CN106514298 B CN 106514298B CN 201611063940 A CN201611063940 A CN 201611063940A CN 106514298 B CN106514298 B CN 106514298B
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- sliding table
- sliding
- linear guide
- table body
- butt joint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/262—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members with means to adjust the distance between the relatively slidable members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a double-platform tandem type combined sliding platform, which comprises a controller, a first sliding platform mechanism and a second sliding platform mechanism, wherein each sliding platform mechanism comprises a driving block, a sliding platform body position sensing device, a sliding platform seat, a linear guide rail, a driving oil cylinder and a left and right transmission mechanism; the driving oil cylinder and the linear guide rail are arranged at the bottom of the sliding platform seat, and the driving oil cylinder is a right bidirectional output hydraulic oil cylinder; the driving block is arranged on the linear guide rail; the driving block or the sliding table body telescopic fixing mechanism is a butt joint mechanism, the sliding table seat adopts end butt joint, and a sliding table body is used together; the linear guide rails are positioned on the same straight line and are in contact connection with each other. This patent structure is simpler, and is with low costs, adopts high accuracy linear guide, and transmission precision is high, has a plurality of products butt joint and extends the function of using, realizes the trans-regional operation of the sliding table body, and output is big, the stroke is long, the operation is steady, adaptability ability is high, the expansion ability is strong, the sexual valence relative altitude.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a double tandem type combined sliding table.
background
according to the prediction and investment analysis report of China slipway industry in 2014 plus 2020, the usage of the domestic mechanical slipway is in the trend of rising year by year at present, and higher requirements are put forward on the slipway: longer stroke, larger output force and higher automation control are required.
Conventional mechanical slides are the main body beds of combination machines, face mills, and other special purpose machines. The working principle of the mechanical sliding table is that the sliding plate does longitudinal motion on the lathe bed, and the sliding plate is driven by a lead screw and acts as a gearbox. Various running speeds such as speed and the like can be obtained.
the mechanical sliding table is provided with a workpiece and then makes reciprocating motion, and the sliding table can also be provided with relevant accessories such as a power head and the like and then makes various cutting, drilling and boring motions on the workpiece through the motion of the sliding table. The complex parts can be machined or mass produced by combining a plurality of sliding tables with different specifications.
however, in various sliding tables in the prior art, particularly hydraulic sliding tables and mechanical sliding tables, a cylinder of one sliding table exists, only the sliding table body can be controlled to act in the control stroke of the cylinder, and no technology capable of controlling the sliding table body to exceed the control stroke of the cylinder exists.
disclosure of Invention
The technical problem to be solved by the invention is to provide a double-platform tandem type combined sliding platform, so as to solve the technical problem that in the prior art, an oil cylinder of one sliding platform can only control the sliding platform body to act in the control stroke of the oil cylinder; the technical problems further solved also include that the device can achieve the beneficial effects of large output force, long stroke, high speed, stable operation, high adaptive capacity, strong expansion capacity and high cost performance.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a double-platform tandem type combined sliding platform which comprises a controller, a sliding platform body, a first sliding platform mechanism and a second sliding platform mechanism, wherein the first sliding platform mechanism and the second sliding platform mechanism respectively comprise a driving block, a sliding platform body position sensing device, a sliding platform seat, a linear guide rail, a driving oil cylinder, a left transmission mechanism and a right transmission mechanism; the linear guide rails are distributed in parallel;
The controller is used for receiving a signal of the sliding table body position sensing device and controlling the action of the driving oil cylinder;
The driving oil cylinder and the linear guide rail are arranged at the bottom of the sliding platform seat, and the left transmission mechanism and the right transmission mechanism are respectively fixed at the left side and the right side of the sliding platform seat; the driving oil cylinder is a left-right bidirectional output hydraulic oil cylinder;
The left transmission mechanism comprises a stay cable and a fixed pulley; the fixed pulley is fixed on the left side of the sliding platform seat; one end of the inhaul cable is connected with the left side of the driving block, and the other end of the inhaul cable is connected with the left end of the driving oil cylinder;
The right transmission mechanism and the left transmission mechanism are symmetrically arranged;
The driving block is arranged on the linear guide rail and can move left and right along the linear guide rail; the lower part of the driving block is provided with a sliding chute which is used for being matched with the linear guide rail; one of the driving block or the sliding table body is provided with a telescopic fixing mechanism, and the other one is provided with a corresponding butt joint structure for fixing the driving block and the sliding table body together;
the sliding table bases of the first sliding table mechanism and the second sliding table mechanism are combined together in a mode of end butt joint, and a sliding table body is used together; the linear guide rails of the first sliding table mechanism and the second sliding table mechanism are positioned on the same straight line and are in contact connection with each other;
The sliding table body is arranged on the linear guide rail and can slide along the linear guide rail; the sliding table body is provided with two telescopic fixing mechanisms or two butt joint structures which are respectively positioned at the left side and the right side of the sliding table body.
more specifically, the telescopic fixing mechanism is an ejection device, the ejection device comprises a docking pin control mechanism and a docking pin, and the docking pin control mechanism controls the docking pin to eject and retract; the corresponding docking structure is an insertion hole or an insertion groove.
More specifically, the telescopic fixing mechanism comprises a holding piston and a friction plate, and the corresponding butt joint structure is a joint surface.
Further specifically, the sliding table body position sensing device is arranged on the sliding table base.
In order to achieve better technical effects, a steel wire rope tensioner can be arranged between the driving oil cylinder of the first sliding table mechanism and/or the second sliding table mechanism and the steel wire rope, and the steel wire rope is fixed on the driving oil cylinder through the steel wire rope tensioner.
This patent's two serial-type combination slip tables, its working method is:
the sliding table bodies are driven by the driving block to walk on the sliding table seats of the first sliding table mechanism to the sliding table seats of the second sliding table mechanism, and when the sliding table bodies walk to a first limit position, the sliding table body position sensing device receives a sliding table body position signal and transmits the signal to the controller; the controller controls the connecting part of the telescopic fixing mechanism to move and is combined with the butting mechanism, and meanwhile, the moving speed of the sliding table body is controlled by the driving block of the first sliding table mechanism; when the telescopic fixing mechanism of the second sliding table mechanism is combined with the butt joint mechanism, the sliding table body is under the combined action of the driving block of the first sliding table mechanism and the driving block of the second sliding table mechanism, and at this time, when the sliding table body continues to move to the second limit position, the controller controls the telescopic fixing mechanism to retract, so that the sliding table body is separated from the control of the driving block of the first sliding table mechanism and is under the independent action of the driving block of the second sliding table mechanism, and the sliding table body can act on the linear guide rail of the second sliding table mechanism.
through the process, the driving force conversion of the two sliding seats to the sliding table body is realized, so that the cross-region operation of the sliding table body is realized. The speed is basically constant in the process of converting the driving forces of the two oil cylinders through electric control in the whole butt joint process, and the stable and reliable feeding process of the sliding table is ensured.
These technical solutions, including the improved technical solutions, can also be combined or combined with each other, so as to achieve better technical effects.
By adopting the technical scheme, the invention has the following beneficial effects:
the technical scheme of the patent has the advantages of simple structural form, convenience in processing and installation, low manufacturing cost, high transmission precision due to the adoption of the high-precision linear guide rail, and particularly has the function of docking and expanding use of a plurality of products which are not provided by the conventional sliding table, and the function is still in a blank state at home at present.
The butt joint function can make the advantage of the technical scheme of this patent itself more enlargedly, realizes the drive force conversion of two slides to the sliding stand body through this process to realize the operation of striding the district of the sliding stand body. The speed is basically constant in the process of converting the driving forces of the two oil cylinders through electric control in the whole butt joint process, and the stable and reliable feeding process of the sliding table is ensured.
The invention has the advantages of wide application space, low cost and multiple functions after the stroke mechanism is butted, and can be widely applied to conventional and special fields such as laboratories, mines, petrifaction, machining and the like, thereby filling the blank in the aspect of China. After butt joint combination, the conveying device can be used as a conveying device in the field of laboratories and precision assembly lines, and can realize the conveying function of large stroke and high precision. After the universal turning head, the boring head, the milling head, the wire cutting, the welding hand and other processing units are arranged, various super-large and special parts can be processed by utilizing the characteristics of high precision and large stroke, and the special processing unit is suitable for special fields of aviation, ships, wind power, mines and the like; the hydraulic sliding table can be particularly used in the field of various general and special machine tools to replace the traditional hydraulic sliding table, thereby saving the cost and improving the competitiveness of products;
the technical scheme of this patent, the output that has is big, the stroke is long, fast, the operation is steady, adaptability ability height, expansibility reinforce, the advantage that the sexual valence relative altitude, and competitive power is strong in the market.
Drawings
Fig. 1 is an overall structure schematic diagram of a double tandem type combined sliding table of the patent.
Fig. 2 is a schematic structural diagram of a first sliding table mechanism or a second sliding table mechanism of the dual-tandem combined sliding table of the present patent. The sliding table body in the figure is a common sliding table body.
Fig. 3, 4 and 5 are schematic butt joint views of a double tandem type combined sliding table.
In the figure, 1-sliding table body, 2-driving block, 3-fixed pulley, 4-holding piston, 5-friction block, 6-sliding table seat, 7-driving oil cylinder, 10-inhaul cable, 11-linear guide rail and 12-sliding table body position sensing device.
Detailed Description
The patent is further explained below with reference to the drawings. The scope of protection of the patent is not limited to the specific embodiments.
Example 1
As shown in fig. 1, 2 and 3, the dual-stage tandem type combined sliding table of the present invention includes a controller, a sliding table body 1, a first sliding table mechanism and a second sliding table mechanism, wherein the first sliding table mechanism and the second sliding table mechanism each include a driving block 2, a sliding table body position sensing device 12, a sliding table base 6, a linear guide rail 11, a driving oil cylinder 7, a left transmission mechanism and a right transmission mechanism; the linear guide 11 is provided in plurality, and the linear guides 11 are arranged in parallel.
The controller is used for receiving signals of the sliding table body position sensing device 12 and controlling the action of the driving oil cylinder 7.
The driving oil cylinder 7 and the linear guide rail 11 are both arranged at the bottom of the slide pedestal 6, and the left transmission mechanism and the right transmission mechanism are respectively fixed at the left side and the right side of the slide pedestal 6; the driving oil cylinder 7 is a left-right bidirectional output hydraulic oil cylinder.
the left transmission mechanism comprises a stay cable 10 and a fixed pulley 3; the fixed pulley 3 is fixed on the left side of the sliding platform seat 6; one end of a guy cable 10 is connected with the left side of the driving block 2, and the other end of the guy cable 10 is connected with the left end of the driving oil cylinder 7.
The right transmission mechanism and the left transmission mechanism are symmetrically arranged.
The driving block 2 is arranged on a linear guide rail 11 different from the supporting sliding table body 1 and can move left and right along the linear guide rail 11; the lower part of the driving block 2 is provided with a sliding chute which is used for being matched with the linear guide rail 11; a telescopic fixing mechanism is arranged on the driving block 2, the telescopic fixing mechanism is an ejection device, the ejection device comprises a butt joint pin control mechanism and a butt joint pin, and the butt joint pin control mechanism controls the ejection and retraction of the butt joint pin; the corresponding docking structure is an insertion hole or an insertion groove. The sliding table body 1 is provided with two corresponding butt joint structures which are respectively positioned at the left side and the right side of the sliding table body 1.
the sliding table bases of the first sliding table mechanism and the second sliding table mechanism are combined together in a mode of end butt joint, and a sliding table body 1 is used together; the linear guide rails of the first sliding table mechanism and the second sliding table mechanism are positioned on the same straight line and are in contact connection with each other.
The sliding table body 1 is arranged on the linear guide rail and can slide along the linear guide rail.
the slide table body position sensing device 12 is provided on the slide table base.
Example 2
The double-platform tandem type combined sliding platform comprises a controller, a sliding platform body 1, a first sliding platform mechanism and a second sliding platform mechanism, wherein the first sliding platform mechanism and the second sliding platform mechanism respectively comprise a driving block 2, a sliding platform body position sensing device 12, a sliding platform seat 6, a linear guide rail 11, a driving oil cylinder 7, a left transmission mechanism and a right transmission mechanism; the linear guide 11 is provided in plurality, and the linear guides 11 are arranged in parallel.
The controller is used for receiving signals of the sliding table body position sensing device 12 and controlling the action of the driving oil cylinder 7.
The driving oil cylinder 7 and the linear guide rail 11 are both arranged at the bottom of the slide pedestal 6, and the left transmission mechanism and the right transmission mechanism are respectively fixed at the left side and the right side of the slide pedestal 6; the driving oil cylinder 7 is a left-right bidirectional output hydraulic oil cylinder.
The left transmission mechanism comprises a stay cable 10 and a fixed pulley 3; the fixed pulley 3 is fixed on the left side of the sliding platform seat 6; one end of a guy cable 10 is connected with the left side of the driving block 2, and the other end of the guy cable 10 is connected with the left end of the driving oil cylinder 7.
the right transmission mechanism and the left transmission mechanism are symmetrically arranged.
The driving block 2 is arranged on the linear guide rail 11 and can move left and right along the linear guide rail 11; the lower part of the driving block 2 is provided with a sliding chute which is used for being matched with the linear guide rail 11; the sliding platform body 1 is provided with two joint surfaces which are respectively positioned at the left side and the right side of the sliding platform body 1. The driving block 2 is provided with a telescopic fixing mechanism comprising a holding piston 4 and a friction plate, and is used for fixing the driving block 2 and the sliding table body 1 together;
The sliding table bases 6 of the first sliding table mechanism and the second sliding table mechanism are combined together in a mode of end butt joint, and a sliding table body 1 is used together; the linear guide rails of the first sliding table mechanism and the second sliding table mechanism are positioned on the same straight line and are in contact connection with each other.
the sliding table body 1 is arranged on the linear guide rail and can slide along the linear guide rail. The slide table body position sensing device 12 is provided on the slide table base.
Claims (2)
1. The utility model provides a two serial-type combination slip tables, characterized by: the device comprises a controller, a sliding table body, a first sliding table mechanism and a second sliding table mechanism, wherein the first sliding table mechanism and the second sliding table mechanism respectively comprise a driving block, a sliding table body position sensing device, a sliding table seat, a linear guide rail, a driving oil cylinder, a left transmission mechanism and a right transmission mechanism; the linear guide rails are distributed in parallel;
The controller is used for receiving a signal of the sliding table body position sensing device and controlling the action of the driving oil cylinder; the sliding table body position sensing device is arranged on the sliding table base;
The driving oil cylinder and the linear guide rail are arranged at the bottom of the sliding platform seat, and the left transmission mechanism and the right transmission mechanism are respectively fixed at the left side and the right side of the sliding platform seat; the driving oil cylinder is a left-right bidirectional output hydraulic oil cylinder;
The left transmission mechanism comprises a stay cable and a fixed pulley; the fixed pulley is fixed on the left side of the sliding platform seat; one end of the inhaul cable is connected with the left side of the driving block, and the other end of the inhaul cable is connected with the left output end of the driving oil cylinder;
The right transmission mechanism and the left transmission mechanism are symmetrically arranged;
The driving block is arranged on the linear guide rail and can move left and right along the linear guide rail; the lower part of the driving block is provided with a sliding chute which is used for being matched with the linear guide rail; one of the driving block or the sliding table body is provided with a telescopic fixing mechanism, and the other one is provided with a corresponding butt joint structure for fixing the driving block and the sliding table body together;
The sliding table bases of the first sliding table mechanism and the second sliding table mechanism are combined together in a mode of end butt joint, and a sliding table body is used together; the linear guide rails of the first sliding table mechanism and the second sliding table mechanism are positioned on the same straight line and are in contact connection with each other;
The sliding table body is arranged on the linear guide rail and can slide along the linear guide rail; the sliding table body is provided with two telescopic fixing mechanisms or two butt joint structures which are respectively positioned at the left side and the right side of the sliding table body;
The telescopic fixing mechanism is an ejection device, the ejection device comprises a butt joint pin control mechanism and a butt joint pin, and the butt joint pin control mechanism controls the ejection and retraction of the butt joint pin; the corresponding butt joint structure is an insertion hole or an insertion groove;
The working mode is as follows: the sliding table body is driven by the driving block to walk on a sliding table seat of the first sliding table mechanism to a sliding table seat of the second sliding table mechanism, and when the sliding table body walks to a first limit position, the sliding table body position sensing device receives a sliding table body position signal and transmits the signal to the controller; the controller controls the movement of a butt joint pin of a telescopic fixing mechanism of the second sliding table mechanism and is combined with the butt joint mechanism, and meanwhile, the movement speed of the sliding table body is controlled by a driving block of the first sliding table mechanism; when the telescopic fixing mechanism of the second sliding table mechanism is combined with the butt joint mechanism, the sliding table body is under the combined action of the driving block of the first sliding table mechanism and the driving block of the second sliding table mechanism, at this time, when the sliding table body continues to move to the second limit position, the controller controls the telescopic fixing mechanism of the first sliding table mechanism to withdraw, so that the sliding table body is separated from the control of the driving block of the first sliding table mechanism and is under the independent action of the driving block of the second sliding table mechanism, and the sliding table body can act on the linear guide rail of the second sliding table mechanism.
2. the dual in-line combination skid of claim 1, further comprising: and a steel wire rope tensioner is arranged between the driving oil cylinder of the first sliding table mechanism and/or the second sliding table mechanism and the steel wire rope, and the steel wire rope is fixed on the driving oil cylinder through the steel wire rope tensioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611063940.0A CN106514298B (en) | 2016-11-28 | 2016-11-28 | Double-platform tandem type combined sliding table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611063940.0A CN106514298B (en) | 2016-11-28 | 2016-11-28 | Double-platform tandem type combined sliding table |
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| Publication Number | Publication Date |
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| CN106514298A CN106514298A (en) | 2017-03-22 |
| CN106514298B true CN106514298B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611063940.0A Active CN106514298B (en) | 2016-11-28 | 2016-11-28 | Double-platform tandem type combined sliding table |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111390649B (en) * | 2020-03-17 | 2021-06-22 | 南京高传四开数控装备制造有限公司 | Linkage vertical machining center with double workbenches and multiple main shafts controlled independently |
| CN113305618B (en) * | 2021-05-26 | 2024-09-10 | 江苏普拉迪数控科技有限公司 | Automatic head changing head warehouse of gantry machining center |
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| CN203045525U (en) * | 2013-02-26 | 2013-07-10 | 丽水学院 | Driving device for grinding reciprocating movement |
| CN103790417A (en) * | 2013-10-05 | 2014-05-14 | 梁崇彦 | Hydraulic drive transverse moving system of mechanical parking device |
| CN104907839A (en) * | 2015-06-20 | 2015-09-16 | 苏州蓝王机床工具科技有限公司 | Driving device for large-sized reciprocating motion machine tool |
| CN206230250U (en) * | 2016-11-28 | 2017-06-09 | 洛阳利维科技有限公司 | A kind of dual stage combination in series slide unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010240815A (en) * | 2009-04-10 | 2010-10-28 | Mitsubishi Heavy Ind Ltd | Linear guide device of machine tool |
| CN203927276U (en) * | 2014-05-30 | 2014-11-05 | 西安交通大学 | The high high-accuracy location one-dimensional platform of accelerating of a kind of ultralong-stroke |
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2016
- 2016-11-28 CN CN201611063940.0A patent/CN106514298B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203045525U (en) * | 2013-02-26 | 2013-07-10 | 丽水学院 | Driving device for grinding reciprocating movement |
| CN103790417A (en) * | 2013-10-05 | 2014-05-14 | 梁崇彦 | Hydraulic drive transverse moving system of mechanical parking device |
| CN104907839A (en) * | 2015-06-20 | 2015-09-16 | 苏州蓝王机床工具科技有限公司 | Driving device for large-sized reciprocating motion machine tool |
| CN206230250U (en) * | 2016-11-28 | 2017-06-09 | 洛阳利维科技有限公司 | A kind of dual stage combination in series slide unit |
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| CN106514298A (en) | 2017-03-22 |
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