CN114473472A - Multi-screw simultaneous automatic fastening device - Google Patents
Multi-screw simultaneous automatic fastening device Download PDFInfo
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- CN114473472A CN114473472A CN202210327448.9A CN202210327448A CN114473472A CN 114473472 A CN114473472 A CN 114473472A CN 202210327448 A CN202210327448 A CN 202210327448A CN 114473472 A CN114473472 A CN 114473472A
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- screwdriver
- plate
- torque
- guide rail
- transmission shaft
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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
- 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
- B23P19/04—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 assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/069—Multi-spindle machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a multi-screw simultaneous automatic fastening device, which is formed by welding a bottom plate and a vertical plate; the bottom plate is provided with a slide block guide rail structure, a double-shaft air cylinder, a workpiece mounting plate, an air cylinder and the like, and the workpiece mounting plate is connected with the air cylinder and the slide block and moves back and forth under the action of a control system; the vertical plate welding is provided with a pneumatic screwdriver fixing plate, a buffer plate combination, a screw driver guiding combination, a slide block guide rail structure and the like, the buffer plate combination and the screw driver guiding combination are connected to a slide block, the correct position of the vertical plate welding is guaranteed to move up and down on the guide rail under the driving of a driving cylinder, and a plurality of groups of screws are simultaneously fastened according to certain torque under the control of on-off air under the action of a control system; the problem of the connecting piece in screw fastening process because of the fastening order is different, lead to the assembly moment of torsion dispersion big is solved, improved assembly efficiency, need not the manual work to grip simultaneously and criticize, reduce artifical intensity of labour.
Description
Technical Field
The invention relates to the technical field of automatic screw fastening clamps, in particular to a device for simultaneously and automatically fastening multiple screws.
Background
At present in the installation of screw, especially there are a plurality of screws that need to lock on a plane, and this department when torque control to the screw needs more accurate, like the box assembling screw of engine crankcase, the fastening screw of cylinder cap and cylinder head, what often adopted is that the manual work is handed the wind batch and is fastened one by one the screw, because every screw is not going on simultaneously in fastening process, the moment of torsion difference of fastening is great, consequently need reuse moment of torsion spanner to carry out the retightening to every screw, in long-time operation process simultaneously, the workman uses for a long time and can produce the harm to the hand, work efficiency is lower during manual operation simultaneously, intensity of labour is big. In the assembly process of some production lines, screws are required to be installed at fixed positions, and a device for simultaneously and automatically fastening multiple screws can be completely designed.
Disclosure of Invention
In order to solve the problems of the background art, the present invention provides an automatic fastening device which can automatically fasten a plurality of screws at the same time and can realize a constant torque.
The invention adopts the technical scheme that a multi-screw simultaneous automatic fastening device comprises
The workpiece positioning and mounting device comprises a bottom plate, a slide block guide rail structure, a double-shaft air cylinder, a workpiece mounting plate, an air cylinder and other components are arranged on the bottom plate, the workpiece mounting plate is connected with the air cylinder and a slide block, a workpiece is positioned and mounted on the workpiece mounting plate, and the air cylinder presses the workpiece mounting plate and moves back and forth under the action of a control system;
the vertical plate is welded, a pneumatic screwdriver fixing plate and a sliding block guide rail structure are arranged on the vertical plate, a buffer plate combination and a screwdriver guide combination are fixed on the sliding block guide rail structure, the sliding block guide rail structure is driven by a driving cylinder to move up and down on a guide rail A, and a plurality of groups of screws are simultaneously fastened according to certain torque through the control of on-off air under the action of a control system;
the control system is composed of an electromagnetic valve, a PLC (programmable logic controller), a magnetic switch and the like, and is used for controlling the movement of the air cylinder and the on-off of the fixed-torque air batch so as to realize the automatic control of the fastening device.
The fixed torque screwdriver is fixed on the screwdriver fixing plate and is connected with the transmission shaft through the connecting column, the screwdriver automatically stops when the fastening torque reaches the set torque, and the fixed torque screwdriver can continue to work only by resetting during the next working cycle.
The buffer plate combination comprises a slide block fixing plate, a transmission shaft supporting seat, a transmission shaft, a bearing A, a spring A and the like, ensures the torque transmission of the transmission shaft with the screwdriver head through the transmission shaft connecting sleeve and the screwdriver connecting sleeve, and realizes the buffer when the screwdriver head is contacted with the fastening screw. The tappet, the spring B, the connecting column, the pin shaft and the transmission shaft connecting sleeve in the transmission shaft form an automatic resetting mechanism of the fixed-torque air batch;
the screwdriver guide assembly consists of a sliding block fixing plate A, a screwdriver fixing plate, a screwdriver positioning sleeve and a bearing B, and the screwdriver is guaranteed to be correctly positioned and transferred in the operation process.
The invention has the positive effects that: according to the invention, the driving cylinder drives the downward-pressing type fixed torque wrench of the wind screwdriver fixing plate, the automatic resetting mechanism combined with the buffer plate and the screwdriver guided by the screwdriver to be automatically fastened by multiple screws simultaneously along the guide rail, and the fixed torque wind screwdriver fixed torque function is combined, so that the consistency of fastening torque is realized, the assembly efficiency is improved, and the labor intensity is reduced.
Drawings
FIG. 1 is a schematic diagram illustrating an embodiment of the present invention;
FIG. 2 is a general assembly view showing a buffer plate assembly in an embodiment of the present invention;
fig. 3 is a general assembly view showing a driver guide assembly in an embodiment of the present invention;
fig. 4 is a comparison of fastening torque values using a conventional manual air batch and a fixed-torque air batch of the present invention.
The numbering in the drawings illustrates:
1. a base plate; 2. a cylinder; 3. a workpiece mounting plate; 4. welding the vertical plates; 5. a guide rail A; 6. a screwdriver head; 7. the screwdriver is guided and combined; 7a, a screwdriver fixing plate; 7b, a slide block fixing plate A; 7c, screw D; 7d, bearing cover plates; 7e, a screwdriver positioning sleeve; 7f, a retaining ring for a shaft; 7g, bearing B; 7h, screw E; 8. a screwdriver connecting sleeve; 9. connecting a column A; 10. a screw A; 11. combining a buffer plate; 11a, a slide block fixing plate; 11b, a transmission shaft fixing plate; 11c, a transmission shaft supporting seat; 11d, shaft sleeve; 11e. spring a; 11f. a drive shaft; 11g, a transmission shaft connecting sleeve; 11h, a check ring; 11i. a pin shaft; 11j. a tappet; 11k, spring B; 11l. bearing a; 11m connecting column 11n screw F; 12. connecting a column B; 13. a wind mill fixing plate; 14. a fixed torque wind batch; 15. a cylinder fixing plate; 16. a driving cylinder; 17. a screw B; 18. a connecting rod; 19. a screw C; 20. a cylindrical pin; 21. a slider; 22. a workpiece A; 23. fastening screws; 24. a workpiece B; 25. a double-shaft cylinder; 26. guide rail B
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, and the scope of the invention will be clearly and clearly defined.
As shown in fig. 1 to 4, the multi-screw simultaneous automatic fastening device finally realizes that a workpiece a 22 is connected with a workpiece B24 through a plurality of fastening screws 23, the torque is controlled to be 7 +/-0.1 Nm, the torque of the constant-torque windrow 14 needs to be controlled to be 7Nm to meet the torque requirement, the constant-torque windrow 14 is automatically stopped after the torque reaches 7Nm, a mechanism is needed to reset the constant-torque windrow 14 in the next cycle, and the implementation process will be described.
The workpiece combination device comprises a bottom plate 1, wherein a sliding mechanism consisting of a sliding block 21 and a guide rail B26 is arranged on the bottom plate 1, the sliding block 21 is connected with a workpiece mounting plate 3, the workpiece mounting plate 3 is connected with a double-shaft cylinder 25, a workpiece B24 is positioned and mounted on the workpiece mounting plate 3, a workpiece A22 is connected with a workpiece B24 through a fastening screw 23 to form a workpiece combination, the workpiece combination moves back and forth on the bottom plate 1 under the driving of the double-shaft cylinder 25, when the workpiece combination is driven by the double-shaft cylinder 25 to reach a correct position forwards, the cylinder 2 compresses the workpiece combination, fastening preparation is prepared for the next step, after fastening, the cylinder 2 is loosened, the double-shaft cylinder 25 drives the workpiece combination to move backwards, the workpiece combination is taken down, and a working cycle is completed.
The vertical plate welding 4 is provided with a sliding mechanism consisting of a sliding block 21 and a guide rail A5, a buffer plate combination 11 and a screwdriver guide combination 7 are fixed on the sliding mechanism by a screw C19, a driving cylinder 16 is fixed on a cylinder fixing plate 15, the cylinder fixing plate 15 is fixed on the vertical plate welding 4 under the action of a screw B17, the driving cylinder 16 is connected with a screwdriver fixing plate 13 through a connecting rod 18, a fixed-torque screwdriver 14 is fixed on the screwdriver fixing plate 13, the screwdriver fixing plate 13 and the buffer plate combination 11 are connected under the fastening of a screw A10 through a connecting rod B12, the buffer plate combination 11 and the screwdriver guide combination 7 are connected under the fastening of the screw A10 through a connecting rod A9, a screwdriver connecting sleeve 8 is connected with the buffer plate combination 11 through a cylindrical pin 20, a screwdriver head 6 is placed in a screwdriver positioning sleeve 8, so that the correct position is guaranteed to move up and down on the guide rail A5 under the driving of the driving cylinder 16, under the action of a control system, a plurality of fastening screws 23 are simultaneously fastened according to a certain torque through the control of on-off air;
the buffer plate assembly 11 is composed of a slider fixing plate 11a, a transmission shaft fixing plate 11B, a transmission shaft supporting seat 11c, a shaft sleeve 11D, a spring A11 e, a transmission shaft 11F, a transmission shaft connecting sleeve 11g, a retainer ring 11h, a pin shaft 11i, a tappet 11j, a spring B11 k, a bearing A11 l, a connecting column 11m and a screw F11 n, wherein the slider fixing plate 11a is connected with the transmission shaft fixing plate 11B through a screw D7 c, the transmission shaft supporting seat 11c is fixed on the transmission shaft fixing plate 11B through the screw F11 n, the transmission shaft 11F is supported through two bearings A11 l, the shaft sleeve 11D positions the axial positions of the two bearings A11 l, and the retainer ring 11h limits the axial movement of the bearing A. The pin shaft 11i is in interference fit with the transmission shaft connecting sleeve 11g and in clearance fit with the groove in the transmission shaft 11f, in the process that the sliding mechanism runs downwards, the spring A11 e is compressed, the transmission shaft connecting sleeve 11g slides upwards in the groove of the transmission shaft 11f together, the tappet 11j is pushed to move upwards, the tappet 11j pushes the spring B11 k to move upwards, the spring B11 k pushes the connecting column 11m to move upwards, the connecting column 11m is in contact with a reset switch in the constant-torque air batch 14, the switch is turned on, and the constant-torque air batch 14 is started to drive the screwdriver head 6 to work.
The screwdriver guide assembly 7 comprises a screwdriver fixing plate 7a, a slider fixing plate A7B, a screw D7 c, a bearing cover plate 7D, a screwdriver positioning sleeve 7E, a shaft retaining ring 7f, a bearing B7 g and a screw E7 h, wherein the screwdriver fixing plate 7a is fixed on the slider fixing plate A7B by the screw D7 c, the bearing cover plate 7D is fixed on the screwdriver fixing plate 7a by the screw E7 h, the bearing B7 g is fixed on the screwdriver positioning sleeve 7E by the shaft retaining ring 7f, and the screwdriver head 6 is positioned in the rotating process, so that the accuracy and reliability in the fastening process are guaranteed.
The control system is composed of an electromagnetic valve, a PLC (programmable logic controller), a magnetic switch and the like, and is used for controlling the movement of the air cylinder and the on-off of the fixed-torque air batch so as to realize the automatic control of the fastening device.
The invention has the following positive effects: the invention drives the fixed torque air batch 14 on the air batch fixing plate 13, the buffer plate combination 11 and the screwdriver head 6 of the screwdriver guide combination 7 to be automatically fastened by multiple screws at the same time through the driving air cylinder 16 along the guide rail A5, realizes the consistency of fastening torque by combining the fixed torque function of the fixed torque air batch 14, continuously assembles 10 components of a workpiece A22 and a workpiece B24 by using the multiple screw simultaneous automatic fastening device and conventionally using a manual air batch one by one, and performs torque test, wherein the test data is shown in figure 4. As can be seen from FIG. 4, the torque values of the workpiece combinations assembled by using the device of the invention all meet the requirement of 7 +/-0.1 Nm, the qualification rate is 100%, while the qualification rate of the assembly by using the conventional manual handheld assembly means is only 20%, and the device of the invention meets the requirement of the assembly quality; compared with the conventional assembly that only one screw can be fastened at one time, the assembly efficiency is improved by 100 percent; the pneumatic screwdriver does not need to be manually held, and the labor intensity is reduced.
The best configuration and the like for carrying out the present invention have been disclosed above, but the present invention is not limited thereto. That is, although specific embodiments have been particularly shown and described in the present invention, those skilled in the art can variously change the shape, number, and other detailed configurations of the above-described embodiments without departing from the scope of the technical idea and object of the present invention.
Therefore, the description of the shapes, numbers, and the like disclosed above is given by way of example to facilitate understanding of the present invention, and is not intended to limit the present invention, and the description under the names of the members other than the limitation of some or all of the shapes, numbers, and the like is also included in the present invention.
Claims (5)
1. A multi-screw simultaneous automatic fastening device is characterized by comprising
The device comprises a base plate (1), a slide block guide rail structure (21, 26), a double-shaft cylinder (25), a workpiece mounting plate (3), a cylinder (2) and other components are arranged on the base plate, the workpiece mounting plate (3) is connected with the double-shaft cylinder (25) and a slide block (21), a workpiece is positioned and mounted on the workpiece mounting plate (3), and the cylinder (2) compresses the workpiece and moves back and forth under the action of a control system;
the vertical plate welding joint (4) is provided with a wind batch fixing plate (13) and a sliding block guide rail structure (21, 5), a buffer plate combination (11) and a screwdriver guide combination (7) are fixed on the sliding block guide rail structure, the sliding block guide rail structure is driven by a driving cylinder (16) to ensure that the sliding block guide rail structure moves up and down at a correct position on a guide rail A (5), and a plurality of groups of screws are simultaneously fastened according to certain torque through the control of on-off air under the action of a control system;
the control system comprises an electromagnetic valve, a PLC (programmable logic controller), a magnetic switch and the like, controls the movement of the air cylinder and the on-off of the fixed-torque air screwdriver (14), and realizes the automatic control of the fastening device.
2. The device for simultaneously and automatically fastening multiple screws according to claim 1, wherein the fixed-torque screwdriver (14) is fixed on the screwdriver fixing plate (13) and is connected with the transmission shaft (11f) through the connecting column (11m), the screwdriver automatically stops when the fastening torque reaches the set torque, and the fixed-torque screwdriver (14) needs to be reset to continue working at the next working cycle.
3. The device for simultaneously and automatically fastening multiple screws according to claim 1, wherein the buffer plate assembly (11) comprises a slider fixing plate (11a), a transmission shaft fixing plate (11b), a transmission shaft supporting seat (11c), a transmission shaft (11f), a bearing A (11l), a spring A (11e) and the like, so that the transmission of torque between the transmission shaft (11f) and the screwdriver head (6) through the transmission shaft connecting sleeve (11g) and the screwdriver connecting sleeve (8) is ensured, and the buffer effect when the screwdriver head (6) contacts with the fastening screw (23) is realized.
4. The buffer plate combination (11) according to claim 3, wherein the tappet (11j), the spring B (11k), the connecting column (11m), the pin shaft (11i) and the transmission shaft connecting sleeve (11g) in the transmission shaft (11f) form an automatic return mechanism of the constant-torque air batch (14).
5. The device for simultaneously and automatically fastening multiple screws as claimed in claim 1, wherein the driver guide assembly (7) comprises a slider fixing plate A (7B), a driver fixing plate (7a), a driver positioning sleeve (7e) and a bearing B (7g), so as to ensure the proper positioning of the driver head (6) during operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327448.9A CN114473472A (en) | 2022-03-30 | 2022-03-30 | Multi-screw simultaneous automatic fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327448.9A CN114473472A (en) | 2022-03-30 | 2022-03-30 | Multi-screw simultaneous automatic fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114473472A true CN114473472A (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210327448.9A Pending CN114473472A (en) | 2022-03-30 | 2022-03-30 | Multi-screw simultaneous automatic fastening device |
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| Country | Link |
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| CN (1) | CN114473472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952265A (en) * | 2022-06-14 | 2022-08-30 | 江苏拓斯达机器人有限公司 | Automatic locking equipment |
-
2022
- 2022-03-30 CN CN202210327448.9A patent/CN114473472A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952265A (en) * | 2022-06-14 | 2022-08-30 | 江苏拓斯达机器人有限公司 | Automatic locking equipment |
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