CN111215894A - Automatic press-fitting equipment for screws in cavity - Google Patents
Automatic press-fitting equipment for screws in cavity Download PDFInfo
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- CN111215894A CN111215894A CN202010102596.1A CN202010102596A CN111215894A CN 111215894 A CN111215894 A CN 111215894A CN 202010102596 A CN202010102596 A CN 202010102596A CN 111215894 A CN111215894 A CN 111215894A
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- subassembly
- cavities
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- 210000000080 chela (arthropods) Anatomy 0.000 claims abstract description 15
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 20
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000037396 body weight Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
- B23P21/004—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units passing two or more work-stations whilst being composed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/007—Picking-up and placing mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The utility model provides an automatic pressure equipment of screw in cavity, which comprises a bod, the mesa, the floating pincers body subassembly, the frock subassembly, the pincers body supporting shoe, the floating pincers body subassembly is connected with the organism, the floating pincers body subassembly has C type pressure head, the frock subassembly sets up in the below of floating pincers body subassembly, and be connected with the mesa, the frock subassembly is provided with discoid load piece, discoid load piece has the axis of rotation, rotation axis connection is in revolving cylinder, the top of discoid load piece is provided with first slider, first slider top is provided with the lower mould, the work piece pressfitting hole that is used for holding the work piece has in the lower mould, the below of disc load piece is provided with the downside load piece corresponding with first slider, the pincers body supporting shoe sets up in downside load piece below. The equipment has high expansibility, is convenient for putting products into production and increasing products in later period, realizes automatic press mounting of a plurality of screws and process monitoring, is also suitable for press mounting of other cavity section parts, and realizes a series of steps of single feeding, automatic press-in, process monitoring and the like.
Description
Technical Field
The invention relates to automatic press fitting equipment for screws in a cavity.
Background
Referring to fig. 1, in the automatic press-fitting process of the illustrated cavity type part, two pieces of screws are manually placed into the cavity at one time, then the press-fitting process is automatically realized by equipment, and the tool needs to be designed into a module to integrally switch other tools. Referring to the press-in process of the screw and the plate shown in fig. 2, for the workpiece of the type, in the prior art, a strip-shaped pressure block is inserted between a cavity upper layer material and a cavity lower layer material in a cavity of the part to serve as an integral bearing surface, a forming female die can extrude the plate to form a concave pit so that the screw can be embedded, the screw is pressed into a slightly smaller hole of the plate to realize material meshing, and the pressure is high in the press-fitting process and needs to reach about 100 KN.
Such form is limited by the structure of rectangular shape pressure piece, and both ends all need the load, simultaneously because in the pressure equipment process, in the screw can the embedding material, lead to the work piece can wholly sink, if during unilateral pressure equipment (not two points are pressed together), the left side material can sink and in the embedding material to lead to the material on right side can deform, and then lead to the whole deformation of work piece. If during press fitting, the following disadvantages are also caused: the pressure is too large, the economy is not good, the expansibility of the equipment is not good, and because two screws are pressed and mounted simultaneously, the pressure displacement process of a single screw cannot be accurately monitored, and the quality cannot be ensured. Therefore, the realization of a single press-fitting process is additionally important, and in addition, in order to improve the possibility of the later expansion of the automation degree of the equipment, the modular design and the automatic tooling are additionally important.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide automatic press fitting equipment for screws in cavities, which is suitable for the automatic press fitting process of cavity parts.
In order to achieve the above purpose, the invention provides an automatic press mounting device for screws in a cavity, which comprises a machine body, a floating caliper body assembly, a tool assembly and a caliper body supporting block, wherein the machine body is provided with a table top, the floating caliper body assembly is connected with the machine body and is provided with a C-shaped pressure head, the tool assembly is arranged below the floating caliper body assembly and is connected with the table top, the tool assembly is provided with a disc-shaped bearing block, the disc-shaped bearing block is provided with a rotating shaft, the rotating shaft is connected with a rotating cylinder, a first floating block is arranged above the disc-shaped bearing block, a lower die is arranged above the first floating block, a workpiece press-fit hole for accommodating a workpiece is arranged in the lower die, and a lower bearing block corresponding to the first floating block is arranged below the disc-shaped bearing block, the clamp body supporting block is arranged below the lower side force bearing block.
Preferably, the disc-shaped bearing block comprises a second floating block, the second floating block is arranged above the disc-shaped bearing block, and a yielding groove is arranged at the position, corresponding to the second floating block, of the disc-shaped bearing block.
Preferably, including middle pivot, middle pivot cover locate the axis of rotation, middle pivot inside have the hollow hole that is used for installing the sensor power cord.
Preferably, the fixture comprises a positioning sleeve and a positioning pin, the positioning sleeve is arranged on the table board, and the positioning pin is matched with the positioning sleeve to fix the fixture assembly on the table board.
Preferably, the end part of the C-shaped pressure head is provided with a floating pressing head.
Preferably, a workpiece sensor is arranged on the bottom surface of the lower die.
Preferably, the lower die is provided with a workpiece positioning pin for positioning the workpiece.
Preferably, the guide rail device comprises a guide rail sliding block, and the guide rail sliding block is connected with the C-shaped pressure head.
Preferably, the workpiece positioning device comprises a coarse stop for limiting the position of the workpiece, and the coarse stop is connected with the disc-shaped bearing block.
Preferably, a side support for limiting the position of the side of the workpiece is arranged below the lower die.
The automatic switching tool adopting the modular design has the following advantages:
1. the equipment can obtain larger expansibility, the production and increase of products at the later period are facilitated, and meanwhile, the automatic press mounting and process monitoring of a plurality of screws are completely realized;
2. the press mounting method is applicable to press mounting of other cavity section parts by increasing the rotation angle and controlling the servo movement interval of the equipment, and a series of steps such as single feeding (reducing the beat influence caused by multiple times of feeding), automatic press-in, process monitoring and the like are realized;
3. the multilayer floating and rotating structure of the die can better solve the adverse effect that a workpiece is extruded by a non-working die or a screw area to deform due to the fact that a plurality of screws are fed at a time and press fitting needs single press fitting in the situation that press fitting needs lower die matching to enable the workpiece to be locally sunken, formed and extruded.
Drawings
FIG. 1 is a schematic diagram of a cavity part in the prior art;
FIG. 2 illustrates a press-fitting process of a cavity-type component in the prior art;
FIG. 3 is a perspective view of an automatic press-fitting apparatus for screws in a cavity according to the present invention;
FIG. 4 depicts a modular design of a work table for an automatic screw press-fitting apparatus within a cavity according to the present invention;
FIG. 5 depicts a table top with tooling assemblies switched by the automatic screw press-fitting equipment in a cavity in accordance with the present invention;
FIG. 6 is a side view of the automatic press fitting equipment for screws in a cavity switched over with a tooling assembly according to the present invention;
FIG. 7 is a cross-sectional view of a tooling of the automatic press fitting equipment for the screw in the cavity according to the present invention;
FIG. 8 is a first perspective view of a tooling of the automatic press-fitting equipment for the screws in the cavity according to the invention;
FIG. 9 is a second perspective view of the tooling of the automatic press-fitting equipment for screws in a cavity according to the invention;
fig. 10 to 13 are schematic diagrams illustrating the working principle of the automatic press-fitting equipment for the screws in the cavity according to the invention.
Wherein: 1. a floating caliper body assembly; 2. a tooling assembly; 3. a table top; 4. a positioning sleeve; 5. installing a threaded hole; 6. a disc-shaped bearing block; 7. a first slider; 8. a lower die; 9. a lower bearing block; 10. a workpiece positioning pin; 11. a workpiece sensor; 12. a yielding groove; 13. a rotating shaft; 14. an intermediate rotating shaft; 15. a C-shaped pressure head; 16. a clamp body supporting block; 17. a guide rail slider; 18. a rotating cylinder; 19. floating the compaction head; 20. coarse gear; 21. side support; 22. positioning pins; 23. a second slider.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 3 to 9, fig. 3 is a perspective view of an automatic press-fitting device for a screw in a cavity according to the present invention, fig. 4 illustrates a work table of a modular design of the automatic press-fitting device for a screw in a cavity according to the present invention, fig. 5 illustrates a work table of a tooling assembly switched by the automatic press-fitting device for a screw in a cavity according to the present invention, fig. 6 is a side view of a tooling assembly switched by the automatic press-fitting device for a screw in a cavity according to the present invention, fig. 7 is a sectional view of a tooling of the automatic press-fitting device for a screw in a cavity according to the present invention, fig. 8 is a first perspective view of a tooling of the automatic press-fitting device for a screw in a cavity according to the present invention, and fig. 9 is a second perspective view of a. The automatic press-fitting equipment for the screws in the cavity in the embodiment is mainly divided into a floating clamp body assembly and a movable tool assembly, and specifically comprises a machine body, a floating clamp body assembly 1, a tool assembly 2, clamp body supporting blocks 16 and other parts. The machine body is provided with a table top 3, the floating clamp body assembly 1 is connected with the machine body, the floating clamp body assembly 1 comprises a pair of workpiece pressing cylinders used for pressing workpieces and a C-shaped pressing head 15, a guide rail sliding block 17 is arranged on the machine body, the C-shaped pressing head 15 is installed on the guide rail sliding block 17, and a floating pressing head 19 is arranged at the end part of the C-shaped pressing head 15. And the floating pressing head of the clamp body is used for assisting pressing when the workpiece floats.
The tool assembly 2 is arranged below the floating clamp body assembly 1 and connected with the table top 3, the table top 3 is provided with a positioning sleeve 4 and an installation threaded hole corresponding to different tools, the positioning pin 22 is matched with the positioning sleeve 22 to fix the tool assembly 2 on the table top 3, and the tools can be switched at any time through modularized design. The tool assembly 2 is provided with a disc-shaped bearing block 6, the disc-shaped bearing block 6 is provided with a rotating shaft 13, the rotating shaft 13 is used for being inserted into a bearing for transmission, the rotating shaft 13 is connected to a rotating cylinder 18 through a rotating belt pulley and used for driving 180-degree rotation switching of a press-mounting disc, the rotating shaft 13 is arranged in a sleeved mode that a middle rotating shaft 14 can float up and down, and rotation is transmitted through keys. The intermediate shaft 14 has a hollow hole inside for mounting the power cord of the sensor, which ensures that the cable is not twisted. In addition, the tooling assembly 2 is further provided with a coarse stop 20 for limiting the position of the workpiece, the coarse stop 20 is connected with the disc-shaped bearing block 6, and universal interfaces such as electric quick plug and gas quick plug are further arranged below the tooling assembly 2.
The top of discoid load block 6 is provided with first slider 7 that is used for upside contact switching mould, but relative rotation between first slider 7 and the discoid load block, 7 tops of first slider are provided with lower mould 8, have the work piece pressfitting hole that is used for holding the work piece in the lower mould 8, the bottom surface of lower mould 8 is provided with the work piece sensor 11 that is used for the detection of cavity work piece, still be provided with the work piece locating pin 10 that is used for fixing a position the work piece on the lower mould 8, the below of lower mould 8 has the side support 21 of restriction work piece side position, when the pressure cylinder compresses tightly, the work piece is fixed a position to location work piece locating pin 10, the side of bottom sprag piece support work piece. During one-side press mounting, the first floating block 7 sinks, so that the workpiece and the screw on the side which is not press-mounted cannot interfere with each other, and the workpiece is guaranteed not to deform.
An oil groove is formed in the upper surface of the disc bearing block 6 and used for lubricating, a cylindrical lower side bearing block 9 corresponding to the first floating block 7 is arranged below the disc bearing block 6 and used for bearing a floating structure of the clamp body and transmitting the press-fitting pressure of the upper side to the lowest side, and the clamp body supporting block 16 is arranged below the lower side bearing block 9. A second floating block 23 is arranged above the disc-shaped bearing block 6, and a yielding groove 12 is arranged at the position of the disc-shaped bearing block 6 corresponding to the second floating block 23.
Fig. 10 to 13 are schematic diagrams illustrating the working principle of the automatic press-fitting equipment for the screws in the cavity according to the invention.
As shown in fig. 10 and 11, the upper C-shaped die is not in contact with the pliers body, and the counter-drawing and pressing processes are not started. In the process, the clamp body can float up and down along with the guide rail sliding block, the floating pressing head of the clamp body is used for assisting pressing when a workpiece floats, the workpiece can be assisted to be pressed downwards to prevent inclination when being pressed, the upper side die does not contact with a screw, the lower side die does not contact with each other at the moment, the C-shaped pressing head with special design is enabled to go deep into the workpiece through the Y-direction movement of the clamp body and the X-direction movement of the tool, and then the cylinder is reversely pulled to form a state to be pressed in a picture.
As shown in figure 12, the pressure head on the upper side of the clamp body extends to contact the screw to start reverse drawing, but does not start to press the material. Under the action of the balance cylinder, the clamp body is lifted, and the lower die contacts with a bearing surface of the tool. The pincers body can rise under the effect of reaction force during impressing, and the subsides tie-down die that the downside rises, and the rear side has a balance cylinder, balanced pincers body weight, and when pulling the pincers body backward like this, corresponding pincers body weight can not be used on preceding frock, and upside mould contact screw, but the process of impressing of screw does not begin, and at this moment, the downside mould contacts the load piece of frock.
As shown in fig. 13, the clamp body is extended further, the screw on the force application side is pressed into the material, the balance cylinder is arranged on the rear side to balance the weight of the clamp body, so that when the clamp body is pulled reversely, the corresponding weight of the clamp body cannot act on the front tool, and the screw which is not pressed on the left side sinks under the action of the floating structure of the tool and cannot be stressed. The workpiece in the left non-press-fitting area can extrude the die at the position to float downwards, a gap is generated after the die floats, the lower side of the die is a cavity and can float downwards, the die is not stressed, and press-fitting screws of the die with the C-shaped structure enter the material layer to contact with bearing force.
Finally, after one-time press mounting is completed, the tool can be integrally rotated by 180 degrees under the driving of the rotary cylinder, so that the press mounting is switched to the other side, the whole-process automation can be realized only by the last material, the press mounting displacement process of a single point can be monitored, the press mounting tool can be suitable for press mounting of other cavity type section parts by the increase of the rotation angle and the servo movement interval of the control equipment, and a series of steps such as single material loading (the influence of the beat caused by multiple material loading is reduced), automatic press mounting, process monitoring and the like are realized. In addition, the equipment can obtain larger expansibility (such as expanding to nut press mounting), so that the production and increase of products at the later stage are facilitated, and meanwhile, the automatic press mounting and process monitoring of a plurality of screws are completely realized; the multilayer floating and rotating structure of the die can better solve the adverse effect that a workpiece is extruded by a non-working die or a screw area to deform due to the fact that a plurality of screws are fed at a time and press fitting needs single press fitting in the situation that press fitting needs lower die matching to enable the workpiece to be locally sunken, formed and extruded.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides an automatic pressure equipment of screw in cavity, includes the organism, the organism be provided with mesa (3), its characterized in that: still include floating pincers body subassembly (1), frock subassembly (2), pincers body supporting shoe (16), floating pincers body subassembly (1) with the organism be connected, floating pincers body subassembly (1) C type pressure head (15) have, frock subassembly (2) set up in the below of floating pincers body subassembly (1) and with mesa (3) be connected, frock subassembly (2) be provided with discoid bearing piece (6), discoid bearing piece (6) axis of rotation (13) have, axis of rotation (13) connect in revolving cylinder (18), the top of discoid bearing piece (6) be provided with first slider (7), first slider (7) top be provided with lower mould (8), lower mould (8) in have the work piece pressfitting hole that is used for holding the work piece, the below of disc bearing piece (6) be provided with the corresponding downside of first slider (7) The pliers body supporting block (16) is arranged below the lower side bearing block (9).
2. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: the bearing block comprises a second floating block (23), wherein the second floating block (23) is arranged above a disc-shaped bearing block (6), and a yielding groove (12) is formed in the position, corresponding to the second floating block (23), of the disc-shaped bearing block (6).
3. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: including middle pivot (14), middle pivot (14) cover locate axis of rotation (13), middle pivot (14) inside have the hollow hole that is used for installing the sensor power cord.
4. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: including position sleeve (4) and locating pin (22), position sleeve (4) set up in mesa (3) on, locating pin (22) cooperate with position sleeve (22) will frock subassembly (2) be fixed in mesa (3) on.
5. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: the end part of the C-shaped pressure head (15) is provided with a floating pressing head (19).
6. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: and a workpiece sensor (11) is arranged on the bottom surface of the lower die (8).
7. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: the lower die (8) is provided with a workpiece positioning pin (10) for positioning a workpiece.
8. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: the device comprises a guide rail sliding block (17), wherein the guide rail sliding block (17) is connected with the C-shaped pressure head (15).
9. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: the workpiece positioning device comprises a coarse stop (20) used for limiting the position of a workpiece, wherein the coarse stop (20) is connected with the disc-shaped bearing block (6).
10. The automatic press-fitting equipment for screws in cavities of claim 1, wherein: and a side support (21) for limiting the side position of the workpiece is arranged below the lower die (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102596.1A CN111215894A (en) | 2020-02-19 | 2020-02-19 | Automatic press-fitting equipment for screws in cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102596.1A CN111215894A (en) | 2020-02-19 | 2020-02-19 | Automatic press-fitting equipment for screws in cavity |
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| Publication Number | Publication Date |
|---|---|
| CN111215894A true CN111215894A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010102596.1A Pending CN111215894A (en) | 2020-02-19 | 2020-02-19 | Automatic press-fitting equipment for screws in cavity |
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| Country | Link |
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| CN (1) | CN111215894A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737288A (en) * | 2013-11-29 | 2014-04-23 | 天津博信汽车零部件有限公司 | Device for press mounting of bolts |
| CN105598660A (en) * | 2016-03-25 | 2016-05-25 | 航天科技控股集团股份有限公司 | Automatic motometer part mounting machine |
| CN108080933A (en) * | 2018-01-22 | 2018-05-29 | 苏州托克斯冲压设备有限公司 | Sealing cover press-loading apparatus |
| CN207564080U (en) * | 2017-10-19 | 2018-07-03 | 常州星宇车灯股份有限公司 | A kind of novel rotation press mounting worktable |
| CN211804779U (en) * | 2020-02-19 | 2020-10-30 | 苏州托克斯冲压设备有限公司 | Automatic press-fitting equipment for screws in cavity |
-
2020
- 2020-02-19 CN CN202010102596.1A patent/CN111215894A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737288A (en) * | 2013-11-29 | 2014-04-23 | 天津博信汽车零部件有限公司 | Device for press mounting of bolts |
| CN105598660A (en) * | 2016-03-25 | 2016-05-25 | 航天科技控股集团股份有限公司 | Automatic motometer part mounting machine |
| CN207564080U (en) * | 2017-10-19 | 2018-07-03 | 常州星宇车灯股份有限公司 | A kind of novel rotation press mounting worktable |
| CN108080933A (en) * | 2018-01-22 | 2018-05-29 | 苏州托克斯冲压设备有限公司 | Sealing cover press-loading apparatus |
| CN211804779U (en) * | 2020-02-19 | 2020-10-30 | 苏州托克斯冲压设备有限公司 | Automatic press-fitting equipment for screws in cavity |
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