CN107537941B - Closing-in tool for motor rear cover of electric EGR valve - Google Patents
Closing-in tool for motor rear cover of electric EGR valve Download PDFInfo
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- CN107537941B CN107537941B CN201711017821.6A CN201711017821A CN107537941B CN 107537941 B CN107537941 B CN 107537941B CN 201711017821 A CN201711017821 A CN 201711017821A CN 107537941 B CN107537941 B CN 107537941B
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- rear cover
- lower die
- die
- motor
- motor rear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a closing-in tool for a motor rear cover of an electric EGR valve, which comprises a lower die part and an upper die part, wherein the lower die part is connected with the upper die part in a positioning way through a guide post and a guide sleeve; the center of the middle lower part of the lower die part is provided with a pre-tightening mechanism for pre-tightening the motor rear cover and the motor seat to improve the tightness and the connection strength of the motor rear cover before the motor rear cover is closed; and a clamping mechanism used for always keeping the motor seat from left and right offset in the closing-in process of the motor rear cover is further arranged between the lower die part and the upper die part. The motor rear cover closing-in device is compact in structure, ingenious in design and convenient to detach, and under the combined action of the pre-tightening mechanism and the clamping mechanism, closing-in operation of the motor rear cover is accurately realized, so that an assembled product is more precise, and the qualification rate of the product is greatly improved.
Description
Technical Field
The invention relates to the technical field of tool fixtures, in particular to a closing-in tool for a motor rear cover of an electric EGR valve.
Background
The EGR valve is a core modular unit in an EGR system, and is used in an EGR exhaust gas recirculation system, and is precisely controlled by Pulse Width Modulation (PWM) signals, so as to meet stricter emission requirements. At present, in an electric EGR valve in use, rotational motion of a motor is generally required to be converted into linear motion of a valve switch, and in the conversion process of the two motions, the stability of the motor plays a key role.
The EGR valve is that the motor inserts in two contact pins of motor housing through positive and negative pole, and motor gear meshes with three transition gear mutually, then three transition gear meshes with the gear reduction in the reducing gear box, and after the motor is circular telegram under such assembly condition, power is transmitted to transition gear by the motor, and the rotational motion of motor is transmitted out through the reducing gear box after the reduction. The motor driving the EGR valve is used as a complex electric control mechanical unit, has extremely high requirements on performance and durability, works in a complex engine compartment environment, and any small deviation can influence the flow of recirculated gas, so that automobile exhaust gas does not reach standards, and even the performance of the engine is influenced.
The existing assembly mode between the motor rear cover and the motor is that the motor rear cover and the motor shell are riveted and fixed. But this frock clamp structure complicacy is bulky, and the atress is inhomogeneous when riveting behind the motor, and the product outward appearance after the riveting receives the influence for general frock clamp can't realize the operation of closing up to the motor back lid of EGR valve, so it is especially important to develop a accurate motor-driven motor back lid closing up frock.
Disclosure of Invention
The invention aims to solve the technical problem that the closing-in tool for the motor rear cover of the electric EGR valve solves the problem that automobile exhaust does not reach standards due to insufficient precision in assembly of the closing-in operation of the motor rear cover, improves the assembly precision of the closing-in operation of the motor rear cover, reduces assembly deviation and greatly improves the product percent of pass.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
The utility model provides an electronic EGR valve motor back lid binding off frock, includes lower mould part and last mould part, locates the connection through guide pillar and guide pin bushing between lower mould part and the last mould part; the center of the middle lower part of the lower die part is provided with a pre-tightening mechanism for pre-tightening the motor rear cover and the motor seat to improve the tightness and the connection strength of the motor rear cover before the motor rear cover is closed; and a clamping mechanism used for always keeping the motor seat from left and right offset in the closing-in process of the motor rear cover is further arranged between the lower die part and the upper die part.
The lower die part comprises a lower die bottom plate, a lower die fixedly connected with the upper end surface of the lower die bottom plate, and a left cushion block and a right cushion block connected with the bottom end surface of the lower die bottom plate through screws; an inverted T-shaped lower die cavity for accommodating the motor base and the pre-tightening mechanism is formed in the lower die, lower die guide post mounting holes are formed in the left end and the right end of the lower die cavity, and a sliding groove for accommodating the clamping mechanism is formed in the top end of the lower die.
Further optimizing technical scheme, pretension mechanism is including fixedly setting up cylinder c that is located between two cushion on the bottom end face of lower mould bottom plate, and cylinder c's piston rod end fixedly connected with is located lower model intracavity and top and motor cabinet fixed connection's locating piece.
According to the further optimized technical scheme, the upper die part comprises an upper die top plate and an upper die fixedly connected to the lower end face of the upper die top plate through screws; an upper model cavity corresponding to the lower model cavity and used for accommodating the motor rear cover and upper die guide post mounting holes which are positioned at the left end and the right end of the upper model cavity and correspond to the lower die guide post mounting holes in the lower die are formed in the upper die.
According to a further optimized technical scheme, the clamping mechanism comprises a left die and a right die which are positioned in the sliding groove and used for firmly clamping the middle upper part of the motor base; the left side of the left die and the right side of the right die are respectively in threaded connection with a cylinder a and a cylinder b, and guide sleeve mounting holes corresponding to the lower die guide post mounting holes and the upper die guide post mounting holes are respectively formed in the middle of the left die and the right die.
By adopting the technical scheme, the invention has the following technical progress.
The motor rear cover closing-in device is compact in structure, ingenious in design and convenient to detach, and under the combined action of the pre-tightening mechanism and the clamping mechanism, closing-in operation of the motor rear cover is accurately realized, so that an assembled product is more precise, and the qualification rate of the product is greatly improved.
According to the invention, a cylinder c in the pre-tightening mechanism is used for pre-stressing the motor rear cover and the motor base to a certain extent before the motor rear cover is closed, so that good contact between the motor rear cover and the motor base is ensured, and then the hydraulic press descends to overcome the thrust of the cylinder c to continuously press down for closing, so that the motor rear cover and the motor base are always kept in a compressed state in the whole pressing process, and the tightness and the connection strength between the motor rear cover and the motor base are improved.
According to the invention, when the air cylinder c in the pre-tightening mechanism lifts the motor seat upwards to perform pre-tightening operation and when the hydraulic machine performs closing operation in the lower row, the clamping mechanism can effectively prevent the motor seat from deflecting left and right, so that deviation in the operation process is avoided, the assembled product is more precise, and the qualification rate of the product is greatly improved.
In the invention, the upper die part, the lower die part, the clamping mechanism and the pre-tightening mechanism are all arranged separately, and all components in all parts are connected through screw threads or pins, so that the disassembly and the assembly are very convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic cross-sectional structure of the present invention.
Wherein: 1. the die comprises a cushion block, 2, a lower die bottom plate, 3, a lower die, 4, a left die, 5, a right die, 6, a cylinder a,7, a cylinder b,8, a guide sleeve, 9, a guide pillar, 10, an upper die, 11, an upper die top plate, 12, a cylinder c,13, a positioning block, 14, a lower die cavity, 15, a motor base, 16, a motor rear cover, 17, an upper die cavity, 18 and a chute.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
The utility model provides an electronic EGR valve motor back lid binding off frock, combines the FIG. 1 to FIG. 2 to show, includes lower mould part, upper mould part, pretension mechanism and clamping mechanism. The lower die part and the upper die part are connected in a positioning way through a guide post 9 and a guide sleeve 8; the pre-tightening mechanism is arranged at the center of the middle lower part of the lower die part and is used for pre-tightening the motor rear cover 16 and the motor base 15 to a certain extent before the motor rear cover closes up so as to improve the tightness and the connection strength of the motor rear cover; the clamping mechanism is arranged between the lower die part and the upper die part and is used for always keeping the position of the motor base 15 unchanged in the vertical direction in the closing process of the motor rear cover, so that the motor base 15 does not deviate left and right.
The lower die part comprises a lower die bottom plate 2, a lower die 3, a cushion block 1, a lower die cavity 14 and a lower die guide post mounting hole. The lower die 3 is fixedly connected with the upper end face of the lower die bottom plate 2, a sliding groove 18 is formed in the top end of the lower die 3, and the sliding groove 18 is used for accommodating a clamping mechanism; the left cushion block 1 and the right cushion block 1 are connected with the bottom end surface of the lower die bottom plate 2 through screws and are used for supporting the whole device; the lower die cavity 14 is arranged in the lower die 3 and is in an inverted T shape and is used for accommodating the motor base 15 and the pre-tightening mechanism; two lower die guide pillar mounting holes are positioned at the left and right ends of the lower die cavity 14 and are used for placing the guide pillars 9.
The upper die section includes an upper die top plate 11, an upper die 10, an upper die cavity 17 and upper die guide post mounting holes. The upper die 10 is fixedly connected to the lower end surface of the upper die top plate 11 through screws; an upper mold cavity 17 is formed in the upper mold and corresponds to the lower mold cavity 14 for accommodating the motor rear cover 16; the two upper die guide post mounting holes are positioned at the left end and the right end of the upper die cavity 17 and correspond to the lower die guide post mounting holes in the lower die 3, and are used for placing the guide posts 9.
The pre-tightening mechanism comprises a cylinder c12 and a positioning block 13. The cylinder c12 is fixedly arranged on the bottom end surface of the lower die bottom plate 2 and positioned between the two cushion blocks 1 and is used for providing pretightening force before the closing-in of the motor rear cover; the positioning block 13 is arranged at the lower part in the lower die cavity 14 and is fixedly connected with the piston rod end of the cylinder c12, and the top end of the positioning block is fixedly connected with the motor base 15.
The clamping mechanism comprises a left die 4, a right die 5, a cylinder a6, a cylinder b7 and a guide sleeve mounting hole. The left die 4 and the right die 5 are positioned between the lower die 3 and the upper die 10 and are arranged in a chute 18, the upper parts of the right side of the left die 4 and the left side of the right die 5 are respectively arranged in a shape matched with a motor rear cover 16, the middle lower parts of the right side of the left die 4 and the left side of the right die 5 are respectively contacted with a motor base 15, and the middle upper parts of the motor base 15 are firmly clamped under the driving action of a cylinder a6 and a cylinder b7, and threaded holes are respectively formed in the left die 4 and the right die 5; the cylinder a6 and the cylinder b7 are respectively arranged on the left side of the left die 4 and the right side of the right die 5, and the piston rod ends of the cylinder a6 and the cylinder b7 are respectively provided with external threads matched with threaded holes on the left die 4 and the right die 5; the two guide sleeve mounting holes are formed in the middle of the left die 4 and the right die 5 and correspond to the lower die guide post mounting holes and the upper die guide post mounting holes.
The specific operation steps of the motor rear cover closing-in operation are as follows.
Firstly, the motor base 15 is placed in the lower model cavity 14, the bottom end of the motor base 15 is fixedly connected with the positioning block 13, and the motor rear cover 16 is placed in the upper model cavity 17.
Secondly, the piston rod heads of the cylinder a6 and the cylinder b7 are respectively connected into threaded holes of the left die 4 and the right die 5 in a threaded manner, the cylinder a6 and the cylinder b7 are inflated, the piston rods of the cylinder a6 and the cylinder b7 respectively drive the left die 4 and the right die 5 to be close to the center along the sliding groove 18, when the piston rods of the cylinder a6 and the cylinder b7 reach the maximum stroke, the left die 4 and the right die 5 just can tightly clamp the motor base 15, and at the moment, the guide sleeve mounting holes just correspond to the lower die guide pillar mounting holes and the upper die guide pillar mounting holes.
Then, the guide sleeve 8 is installed in the guide sleeve installation hole, and the guide post 9 is installed in the lower die guide post installation hole and the upper die guide post installation hole through the guide sleeve 8, so that the lower die part and the upper die part are stacked together through the guide post and the guide sleeve.
Then, the cylinder c12 is inflated, and the positioning block 13 is lifted to give a certain pre-pressure to the motor rear cover 16 and the motor base 15 under the pushing of the piston rod of the cylinder c12, so that good contact between the motor rear cover 16 and the motor base 15 is ensured.
Finally, the device is placed on a hydraulic workbench, the hydraulic press descends to overcome the thrust of the cylinder c12 to continuously press down for closing in, so that the motor rear cover 16 and the motor base 15 always keep a pressing state in the whole pressing process, and the tightness and the connection strength between the motor rear cover 16 and the motor base 15 are improved.
According to the pre-tightening mechanism, when the cylinder c12 lifts the motor base 15 upwards to perform pre-tightening operation and when the hydraulic press closes up the motor base, the clamping mechanism can effectively prevent the motor base from deflecting left and right, deviation in the operation process is avoided, and the assembled product is more precise.
In the invention, the upper die part, the lower die part, the clamping mechanism and the pre-tightening mechanism are all arranged separately, and all components in all parts are connected through screw threads or pins, so that the disassembly and the assembly are very convenient.
When the specification of the motor base changes, only the left and right mounting positions of the air cylinder a6 and the air cylinder b7 are required to be changed, so that when the piston rods of the air cylinder a6 and the air cylinder b7 extend, the left die 4 and the right die 5 just clamp the middle upper part of the motor base.
Claims (3)
1. Closing-in tool for motor rear cover of electric EGR valve, characterized in that: the die comprises a lower die part and an upper die part, wherein the lower die part is connected with the upper die part in a positioning way through a guide post (9) and a guide sleeve (8); the central position of the middle lower part of the lower die part is provided with a pre-tightening mechanism for pre-tightening the motor rear cover (16) and the motor base (15) to improve the tightness and the connection strength of the motor rear cover before the motor rear cover is closed; a clamping mechanism for always keeping the motor seat (15) from left and right offset in the closing-in process of the motor rear cover is also arranged between the lower die part and the upper die part;
the lower die part comprises a lower die bottom plate (2), a lower die (3) fixedly connected with the upper end surface of the lower die bottom plate (2), and a left cushion block (1) and a right cushion block (1) which are connected with the bottom end surface of the lower die bottom plate (2) through screws; an inverted T-shaped lower model cavity (14) for accommodating a motor seat (15) and a pre-tightening mechanism is formed in the lower die (3), lower die guide post mounting holes are formed in the left end and the right end of the lower model cavity (14), and a sliding groove (18) for accommodating a clamping mechanism is formed in the top end of the lower die (3);
the upper die part comprises an upper die top plate (11) and an upper die (10) fixedly connected to the lower end surface of the upper die top plate (11) through screws; an upper model cavity (17) corresponding to the lower model cavity (14) and used for accommodating the motor rear cover (16) and upper die guide post mounting holes which are positioned at the left end and the right end of the upper model cavity (17) and correspond to the lower die guide post mounting holes in the lower die (3) are formed in the upper die.
2. The electric EGR valve motor rear cover closing-in tool according to claim 1, wherein: the pre-tightening mechanism comprises a cylinder c (12) fixedly arranged on the bottom end face of the lower die bottom plate (2) and positioned between the two cushion blocks (1), and a positioning block (13) which is positioned in the lower die cavity (14) and is fixedly connected with the top end of the cylinder c (12) is fixedly connected with the motor base (15).
3. The electric EGR valve motor rear cover closing-in tool according to claim 1, wherein: the clamping mechanism comprises a left die (4) and a right die (5) which are positioned in the chute (18) and used for firmly clamping the middle upper part of the motor base (15); the left side of left mould (4) and right mould (5) right side threaded connection have cylinder a (6) and cylinder b (7) respectively, and guide pin bushing mounting hole corresponding with lower mould guide pillar mounting hole and last mould guide pillar mounting hole has all been seted up at left mould (4) and right mould (5) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017821.6A CN107537941B (en) | 2017-10-27 | 2017-10-27 | Closing-in tool for motor rear cover of electric EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017821.6A CN107537941B (en) | 2017-10-27 | 2017-10-27 | Closing-in tool for motor rear cover of electric EGR valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107537941A CN107537941A (en) | 2018-01-05 |
| CN107537941B true CN107537941B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711017821.6A Active CN107537941B (en) | 2017-10-27 | 2017-10-27 | Closing-in tool for motor rear cover of electric EGR valve |
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| Country | Link |
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| CN (1) | CN107537941B (en) |
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2017
- 2017-10-27 CN CN201711017821.6A patent/CN107537941B/en active Active
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| CN202021290U (en) * | 2011-03-12 | 2011-11-02 | 无锡隆盛科技有限公司 | Simple edge-folding riveting device |
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| CN102527820A (en) * | 2012-01-19 | 2012-07-04 | 宁波久腾车灯电器有限公司 | Aluminum alloy die casting piece trimming die with smooth cut |
| CN202803969U (en) * | 2012-09-08 | 2013-03-20 | 无锡隆盛科技股份有限公司 | Simple necking device capable of quickly adjusting angle |
| CN103272954A (en) * | 2013-06-07 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Snap-pressing device for exhaust brake valve |
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| CN107537941A (en) | 2018-01-05 |
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