CN110153296A - The mutual twist buckle slot device of spliced iron core and processing technology - Google Patents
The mutual twist buckle slot device of spliced iron core and processing technology Download PDFInfo
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- CN110153296A CN110153296A CN201910444577.4A CN201910444577A CN110153296A CN 110153296 A CN110153296 A CN 110153296A CN 201910444577 A CN201910444577 A CN 201910444577A CN 110153296 A CN110153296 A CN 110153296A
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- iron core
- spliced
- face
- spliced iron
- movable device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
- B21D39/037—Interlocking butt joints
Abstract
The present invention provides a kind of mutual twist buckle slot device of spliced iron core and processing technologys, are related to the technical field of punching press, the spliced mutual twist buckle slot device of iron core includes fixed mechanism, movable device and side push mechanism.When work, fixed mechanism and movable device clamp spliced iron core, the tablet that punching press is fallen and the spliced iron core laminated in cavity；Then movable device is mobile to the direction far from spliced iron core, and spliced iron core and cavity is enabled to constitute transition fit, and then side push mechanism pushes spliced iron core mobile, and then movable device resets, and fixed mechanism and movable device continue to clamp spliced iron core；Above step is repeated, turns round slot to realize during automatic mutual button.The mutual twist buckle slot device of spliced iron core provided in this embodiment, it is time saving and energy saving without the mode of artificial lamination, and improve the efficiency of processing.
Description
Technical field
The present invention relates to stamping technology field, more particularly, to a kind of mutual twist buckle slot device of spliced iron core and processing work
Skill.
Background technique
Punching press is that depended on pressure lathe and mold apply external force to plate, tubing etc., is allowed to generate plastic deformation or separation, from
And the processing method of the workpiece of shape and size needed for obtaining, using extensive.
In the prior art, two kinds are generally divided into the process for stamping of the iron core of automatic mutual button, one is to spliced iron core
Automatic mutual button punch process, principle be under blanking station be arranged a fixed prevention set, lead to interference fit or its other party
To resistance, punching part button point is allowed to be mutually inserted and realize mutual button；Another kind is the automatic mutual button punch process to monoblock type iron core,
Principle is that one is arranged under blanking station using iron core geometric center as the rotation stopping set of basic point, by control system each
A corresponding angle is rotated when punching press to realize the torsion slot of iron core.
But both process for stamping of the prior art, it can only realize to monoblock type iron core automatic mutual button and turn round slot, when
When needing mutually to detain spliced iron core and turn round the processing of slot, the mode for taking artificial lamination is generally required, then pass through weldering
It the techniques such as connects and carrys out secured core structure, it is time-consuming and laborious, and processing efficiency is very low.
Summary of the invention
The purpose of the present invention is to provide a kind of mutual twist buckle slot device of spliced iron core and processing technologys, to improve existing skill
Present in art when needing mutually to detain spliced iron core and turn round the processing of slot, the side for taking artificial lamination is generally required
Formula, then by techniques such as welding come secured core structure, it is time-consuming and laborious, and the technical problem that processing efficiency is very low.
The mutual twist buckle slot device of spliced iron core provided by the invention, including fixed mechanism, movable device and side push mechanism；
Fixed mechanism, movable device and side push mechanism, which are enclosed, is set as one for limiting the cavity of spliced iron core shift position；It is fixed
Mechanism and movable device form movable passageway, side push mechanism for clamping spliced iron core between fixed mechanism and movable device
It can be moved along movable passageway.
Further, fixed mechanism includes fixed block；First clamping face of fixed block and the first arc of spliced iron core
The radian in face is identical, and the first clamping face is bonded with the first arcwall face.
Further, movable device includes movable slider；Second clamping face of movable slider and the second of spliced iron core
Arcwall face with radian it is identical, and the second clamping face is bonded with the second arcwall face.
Further, side push mechanism includes side sliding block；Sliding block in side with the first end face of spliced iron core for abutting.
Further, one end that sliding block in side is abutted with first end face is that side pushes away end face；Side pushes away the shape and first of end face
The shape of end face is identical, and side pushes away end face and is bonded with first end face.
Further, movable device further includes the first actuator, first stroke limit shaft, the first confined planes and the second limit
Plane；First actuator is used to that movable slider to be driven to limit along the axial direction of first stroke limit shaft in the first confined planes and second
It is moved between plane.
Further, side push mechanism further includes the second actuator, second stroke limit shaft, third confined planes and the 4th limit
Plane；Axial direction of second actuator for driving side sliding block along second stroke limit shaft is limited in third confined planes and the 4th
It is moved between plane.
Further, the first actuator is the first electromagnet；Movable slider is ferromagnetism material.
Further, the one end of spliced iron core far from first end face is second end face；Fixed block includes clamping part and limit
Position portion, clamping part for clamping spliced iron core with movable device jointly；Limiting section includes third confined planes and clearance plane, activity
Mechanism can be abutted with third confined planes, there is gap between clearance plane and second end face.
Further, the present invention also provides a kind of processing technology applied to the mutual twist buckle slot device of spliced iron core, packets
Include following steps:
S1 fixed mechanism and movable device clamp spliced iron core；
When S2 punching machine moves to 45 °, movable device clamps spliced iron core together with fixed mechanism, when blanking punched,
The tablet newly fallen and the spliced iron core laminated in cavity；
When S3 punching machine moves to 230 °, movable device is moved to the direction far from spliced iron core, so that spliced iron core
The frictional force being subject to can overcome the gravity of spliced iron core itself that spliced iron is made to be unlikely to fall；
The direction of S4 side push mechanism to close spliced iron core is mobile, to push spliced iron core mobile, after mobile
Playback rapidly, the rotation angle of spliced iron core is α at this time；
When S5 punching machine moves to 45 °, movable device resets, and movable device clamps spliced iron core together with fixed mechanism；
S6 repeats step S2-S5.
The mutual twist buckle slot device of spliced iron core provided by the invention, it is time saving and energy saving without the mode of artificial lamination, and
And improve the efficiency of processing.
Processing technology provided by the invention, the promotion by movable device and side push mechanism to spliced battery core, Neng Goushi
It is realized while spliced iron core is mutually detained now and turns round slot, without carrying out the work such as artificial lamination and welding, effectively improved and add
The efficiency of work saves the time of processing and the labour of operator.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is structure of the spliced mutual twist buckle slot device of iron core provided in an embodiment of the present invention when clamping spliced iron core
Schematic diagram；
Fig. 2 is the structural schematic diagram of spliced iron core provided in an embodiment of the present invention；
Fig. 3 is the partial structure diagram of movable device provided in an embodiment of the present invention；
Fig. 4 is the partial structure diagram of side push mechanism provided in an embodiment of the present invention.
Icon: the mutual twist buckle slot device of the spliced iron core of 1-；The spliced iron core of 2-；3- fixed block；The first arcwall face of 4-；5-
One clamping face；6- movable slider；The second arcwall face of 7-；The second clamping face of 8-；The side 9- sliding block；10- first end face；The gap 11-
Face；12- first stroke limit shaft；The first confined planes of 13-；The second confined planes of 14-；15- second stroke limit shaft；16- third limit
Plane；The 4th confined planes of 17-；18- second end face；19- clamping part；20- limiting section；21- confined planes.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", "left", "right",
"vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on the figure or position
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, as occurred
Term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Fig. 1 is structure of the spliced mutual twist buckle slot device of iron core provided in an embodiment of the present invention when clamping spliced iron core
Schematic diagram, as shown in Figure 1, the mutual twist buckle slot device 1 of spliced iron core provided in this embodiment, including fixed mechanism, movable device
And side push mechanism；Fixed mechanism, movable device and side push mechanism, which are enclosed, is set as one for limiting the mobile position of spliced iron core 2
The cavity set；Fixed mechanism and movable device form movement for clamping spliced iron core 2 between fixed mechanism and movable device
Channel, side push mechanism can be moved along movable passageway.
Wherein, side push mechanism is bonded with the contact surface of fixed mechanism and movable device, enables side push mechanism steady
Ground pushes spliced iron core 2, while avoiding side push mechanism damage, improves the efficiency of processing.
The mutual twist buckle slot device 1 of spliced iron core provided in this embodiment, including fixed mechanism, movable device and side push away machine
Structure；Fixed mechanism, movable device and side push mechanism, which are enclosed, is set as one for limiting the cavity of spliced 2 shift position of iron core；
Fixed mechanism and movable device are for clamping spliced iron core 2, and side push mechanism is for pushing spliced iron core 2 to move in cavity
It is dynamic.When work, fixed mechanism and movable device clamp spliced iron core 2, the tablet and cavity that punching press is fallen
In spliced iron core 2 laminate；Then movable device is mobile to the direction far from spliced iron core 2, enables spliced iron core 2 and sky
Chamber constitutes transition fit, and then side push mechanism pushes spliced iron core 2 mobile, and then movable device resets, fixed mechanism and work
Motivation structure continues to clamp spliced iron core 2；Above step is repeated, turns round slot to realize during automatic mutual button.
The mutual twist buckle slot device 1 of spliced iron core provided in this embodiment, without the mode of artificial lamination, time saving province
Power, and improve the efficiency of processing.
Fig. 2 is the structural schematic diagram of spliced iron core provided in an embodiment of the present invention, as depicted in figs. 1 and 2, in above-mentioned reality
On the basis of applying example, further, fixed mechanism includes fixed block 3；The first clamping face 5 and the spliced iron core 2 of fixed block 3
The radian of first arcwall face 4 is identical, and the first clamping face 5 is bonded with the first arcwall face 4；
Further, further, movable device includes movable slider 6；The second clamping face 8 and the splicing of movable slider 6
Second arcwall face 7 of formula iron core 2 with radian it is identical, and the second clamping face 8 and the second arcwall face 7 be bonded.
In the present embodiment, when side push mechanism pushes spliced iron core 2 to move in the cavities, due to the first arcwall face 4 with
The radian of first clamping face 5 is identical and is bonded, and the second arcwall face 7 is identical as the radian of the second clamping face 8 and is bonded, then spliced
Iron core 2 can successfully move in cavity under the promotion of side push mechanism.
This setup ensure that spliced iron core 2 can successfully move in cavity under the promotion of side push mechanism
Dynamic, the inner wall collision for avoiding spliced iron core 2 and cavity damages the phenomenon that influencing processing effect in turn, improves processing
Efficiency.
As depicted in figs. 1 and 2, on the basis of the above embodiments, further, side push mechanism includes side sliding block 9；Side
Sliding block 9 with the first end face 10 of spliced iron core 2 for abutting；
Further, one end that side sliding block 9 is abutted with first end face 10 is that side pushes away end face 11；Side pushes away the shape of end face 11
It is identical as the shape of first end face 10, and side pushes away end face 11 and is bonded with first end face 10.
Wherein, first end face 10 pushes away end face 11 with side and can be bonded completely, this setup can make first end face 10 with
Side pushes away the maximum of the contact area between end face 11, and when side sliding block 9 pushes spliced iron core 2 mobile, first end face 10 is received
Pressure it is minimum, be more effectively prevented from the case where first end face 10 is deformed, further improved processing
Efficiency.
In the present embodiment, since the shape that side pushes away end face 11 is identical as the shape of first end face 10, and side push away end face 11 with
First end face 10 is bonded, then when side sliding block 9 pushes spliced iron core 2 mobile, first end face 10 and side are pushed away between end face 11
Contact area it is larger, the pressure that first end face 10 receives is smaller, effectively prevents the feelings that first end face 10 is deformed
Condition occurs, and effectively increases the efficiency of processing.
Fig. 3 is the structural schematic diagram of movable device provided in an embodiment of the present invention, as shown in figure 3, in above-described embodiment
On the basis of, further, movable device further includes the first actuator, first stroke limit shaft 12, the first confined planes 13 and
Two confined planes 14；First actuator is used to drive axial direction of the movable slider 6 along first stroke limit shaft 12 in the first limit
It is moved between face 13 and the second confined planes 14.
Wherein, the first limit gap is provided between movable slider 6 and the second confined planes 14, the first limit gap can prevent
Only movable slider 6 is abutted with the second confined planes 14, is avoided movable slider 6 and is damaged because of the extruding by the second confined planes 14,
The service life of movable slider 6 is increased, and improves the efficiency of processing.
In the present embodiment, the first actuator drives movable slider 6 along the axial direction of first stroke limit shaft 12 first
It is moved between confined planes 13 and the second confined planes 14, to push spliced iron core 2 mobile.
This setup effectively defines the mobile position of spliced iron core 2, and first stroke limit shaft 12 can
Play the role of guiding, spliced iron core 2 is more accurate so that movable slider 6 is able to drive, steadily moves, and improves processing
Efficiency.
Fig. 4 is the structural schematic diagram of side push mechanism provided in an embodiment of the present invention, as shown in figure 4, in above-described embodiment
On the basis of, further, side push mechanism further includes the second actuator, second stroke limit shaft 15, third confined planes 16 and
Four confined planes 17；Axial direction of second actuator for driving side sliding block 9 along second stroke limit shaft 15 is limited in third
It is moved between face 16 and the 4th confined planes 17.
Wherein, the second limit gap is provided between side sliding block 9 and the 4th confined planes 17, the second limit gap can prevent
Only side sliding block 9 is abutted with the 4th confined planes 17, is avoided side sliding block 9 and is damaged because of the extruding by the 4th confined planes 17,
The service life of side sliding block 9 is increased, and improves the efficiency of processing.
In the present embodiment, the second actuator driving side sliding block 9 along second stroke limit shaft 15 axial direction in third
It is moved between confined planes 16 and the 4th confined planes 17, to push spliced iron core 2 mobile.
This setup effectively defines the position that spliced iron core 2 moves back and forth, and second stroke limit shaft 15
It can play the role of guiding, spliced iron core 2 is more accurate so that side sliding block 9 is able to drive, steadily moves, and improves
Processing efficiency.
On the basis of the above embodiments, further, the first actuator is the first electromagnet；Movable slider 6 is ferromagnetic
Property material.
Wherein the second actuator is the second electromagnet, and side sliding block 9 is ferromagnetism material.
In the present embodiment, the first electromagnet is for driving movable slider 6 mobile or movable slider 6 being enabled to reset.This set
Mode, operator need to only enable the first electromagnet be powered, can be realized the movement or reset of movable slider 6, it is simple to operate and
It is mobile accurate, further increase the efficiency of processing.
As shown in Fig. 2, on the basis of the above embodiments, further, spliced iron core 2 far from first end face 10 one
End is second end face 18；Fixed block 3 includes clamping part 19 and limiting section 20, and clamping part 19 for clamping spelling with movable device jointly
Connect formula iron core 2；Limiting section 20 includes third confined planes 16 and clearance plane 11, and movable device can be abutted with third confined planes 16,
There is gap between clearance plane 11 and second end face 18.
Wherein, when movable device includes movable slider 6, the second clamping face 8 is identical as the shape of third confined planes 16, and
Second clamping face 8 can be bonded with third confined planes 16；This setup, when the second clamping face is abutted with third confined planes 16
When, the contact area of the second clamping face 8 and third confined planes 16 is larger, so that the second clamping face 8 is right by third confined planes 16
The generation for the case where its pressure is smaller, reduces the damage of the second clamping face 8, improves the service life of movable slider 6.
In the present embodiment, when movable device to it is mobile towards the direction of spliced iron core 2 when, due to depositing for third confined planes 16
It will limit movable device and further squeezing spliced iron core 2, it is therefore prevented that the case where splicing student's iron core is deformed
Occur, improves the efficiency of processing；In addition, having gap between clearance plane 11 and second end face 18, spliced iron core 2 is being prevented
Between limiting section 20 generate interference while, it is thus also avoided that because the extruding that second end face 18 receives clearance plane 11 cause it is spliced
The case where iron core 2 deforms, further improves the efficiency of processing.
On the basis of the above embodiments, further, the embodiment of the invention also provides one kind to be applied to spliced iron
The processing technology of the mutual twist buckle slot device 1 of core, comprising the following steps:
S1 fixed mechanism and movable device clamp spliced iron core 2；
When S2 punching machine moves to 45 °, movable device does not work, and movable device clamps spliced iron core together with fixed mechanism
2, when blanking punched, the spliced iron core 2 in tablet and cavity newly fallen is laminated；
When S3 punching machine moves to 230 °, formed punch has been moved off cavity plate, and movable device is transported to the direction far from spliced iron core 2
Dynamic, so that spliced iron core 2 and cavity constitute transition fit, the chucking power that spliced iron core 2 is subject in the cavities reduces, and spells
Connecing the frictional force that formula iron core 2 is subject to can overcome the gravity of spliced iron core 2 itself that spliced iron is made to be unlikely to fall；
S4 side push mechanism is to close to the movement of the direction of spliced iron core 2, and to push spliced iron core 2 mobile, movement is finished
Playback rapidly afterwards, the rotation angle of spliced iron core 2 is α at this time；
When S5 punching machine moves to 45 °, movable device resets, and movable device clamps spliced iron core 2 together with fixed mechanism；
S6 repeats above step S2-S5, and spliced iron core 2 rotates the angle that an angle is α within each duty cycle
Degree turns round slot to realize during automatic mutual button.
Wherein, when fixed block 3 includes clamping part 19 and limiting section 20, within each duty cycle, spliced iron core 2 is all
The angle that angle is α is rotated to clearance plane 11 under the promotion of side push mechanism.
In addition, when the overall thickness for the spliced iron core 2 for needing machine-shaping is L, the torsion angle of the v-groove is θ, material thickness t
When, then each punching press needs torsion angle of the v-groove α=θ * t/L
Processing technology provided in this embodiment, the promotion by movable device and side push mechanism to spliced battery core, can
It realizes and realizes torsion slot while spliced 2 mutually button of iron core, without carrying out the work such as artificial lamination and welding, effectively improve
The efficiency of processing saves the time of processing and the labour of operator.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of mutual twist buckle slot device of spliced iron core characterized by comprising fixed mechanism, movable device and side push away machine
Structure；
The fixed mechanism, the movable device and the side push mechanism, which are enclosed, is set as one for limiting spliced iron core movement
The cavity of position；
Movable passageway is formed between the fixed mechanism and the movable device, the side push mechanism can be along the movable passageway
It is mobile.
2. the mutual twist buckle slot device of spliced iron core according to claim 1, which is characterized in that the fixed mechanism includes solid
Determine block；
First clamping face of the fixed block is identical as the radian of the first arcwall face of the spliced iron core, and first folder
Face is held to be bonded with first arcwall face.
3. the mutual twist buckle slot device of spliced iron core according to claim 2, which is characterized in that the movable device includes living
Movable slider；
Second clamping face of the movable slider is identical as the radian of the second arcwall face of the spliced iron core, and described second
Clamping face is bonded with second arcwall face.
4. the mutual twist buckle slot device of spliced iron core according to claim 2, which is characterized in that the side push mechanism includes side
Sliding block；
The side sliding block with the first end face of the spliced iron core for abutting.
5. the mutual twist buckle slot device of spliced iron core according to claim 4, which is characterized in that the side sliding block with it is described
One end that first end face abuts is that side pushes away end face；
The shape that the side pushes away end face is identical as the shape of the first end face, and the side pushes away end face and the first end face paste
It closes.
6. the mutual twist buckle slot device of spliced iron core according to claim 3, which is characterized in that the movable device further includes
First actuator, first stroke limit shaft, the first confined planes and the second confined planes；
First actuator is used to drive axial direction of the movable slider along the first stroke limit shaft described the
It is moved between one confined planes and second confined planes.
7. the mutual twist buckle slot device of spliced iron core according to claim 4, which is characterized in that the side push mechanism further includes
Second actuator, second stroke limit shaft, third confined planes and the 4th confined planes；
Second actuator is used to drive axial direction of the side sliding block along the second stroke limit shaft described the
It is moved between three confined planes and the 4th confined planes.
8. the mutual twist buckle slot device of spliced iron core according to claim 6, which is characterized in that first actuator is the
One electromagnet；
The movable slider is ferromagnetism material.
9. the mutual twist buckle slot device of spliced iron core according to claim 4, which is characterized in that the spliced iron core is separate
One end of the first end face is second end face；
The fixed block includes clamping part and limiting section, and the clamping part is used to clamp the splicing jointly with the movable device
Formula iron core；
The limiting section includes third confined planes and clearance plane, and the movable device can be abutted with the third confined planes, institute
Stating between clearance plane and the second end face has gap.
10. a kind of processing technology applied to according to claim 1-9 described in any item spliced mutual twist buckle slot devices of iron core,
Characterized by comprising the following steps:
Fixed mechanism and movable device described in S1 clamp the spliced iron core；
When S2 punching machine moves to 45 °, the movable device clamps the spliced iron core together with the fixed mechanism, works as punching press
The spliced iron core laminated of the tablet newly fallen when blanking and position in the cavity；
When S3 punching machine moves to 230 °, the movable device is moved to the direction far from the spliced iron core, so that the spelling
The frictional force that the formula iron core of connecing is subject to can overcome the gravity of the spliced iron core itself that the spliced iron is made to be unlikely to fall；
S4 side push mechanism has been moved to close to the movement of the direction of the spliced iron core with pushing the spliced iron core mobile
Playback rapidly after finishing, the rotation angle of the spliced iron core described at this time are α；
When S5 punching machine moves to 45 °, the movable device resets, described in the movable device clamps together with the fixed mechanism
Spliced iron core；
S6 repeats step S2-S5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444577.4A CN110153296B (en) | 2019-05-24 | 2019-05-24 | Splicing type iron core mutual buckling and twisting groove device and machining process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444577.4A CN110153296B (en) | 2019-05-24 | 2019-05-24 | Splicing type iron core mutual buckling and twisting groove device and machining process |
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| CN110153296B CN110153296B (en) | 2020-12-18 |
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| CN109546765A (en) * | 2019-01-23 | 2019-03-29 | 宁波菲仕自动化技术有限公司 | A kind of split-type stator core construction and joining method |
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Denomination of invention: Splicing core interlocking twisting slot device and processing technology Effective date of registration: 20230303 Granted publication date: 20201218 Pledgee: Bank of China Limited by Share Ltd. Shunde branch Pledgor: FOSHAN CHUANHENG ELECTROMECHANICAL MANUFACTURING CO.,LTD. Registration number: Y2023980034003 |
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