Vacuum picking and tightening device with vacuum tube capable of hovering

Abstract

The vacuum picking and tightening device comprises a quick-change gun head, a gun head base assembly, a tightening stroke assembly, a stroke assembly and a screwdriver, the gun head base assembly is installed on the stroke assembly, the quick-change gun head is installed at the lower end of the gun head base assembly, the tightening stroke assembly is installed at the upper end of the gun head base assembly, and the screwdriver is installed on the quick-change gun head. The screwdriver is connected with the tightening stroke assembly, the quick-change gun head is connected with the tightening stroke assembly and comprises a vacuum pipe, a screwdriver head, a gun head locking sleeve, a positioning ring and a nut, a clamping ring is arranged on the outer side of the upper portion of the vacuum pipe, a fixing ring mounting groove is formed in the inner side of the top of the gun head locking sleeve, and a fixing ring is mounted in the fixing ring mounting groove. A nut mounting surface and a positioning ring mounting surface are arranged on the outer side of the lower end of the gun head locking sleeve, a blocking part is arranged at the bottom of the nut, the vacuum tube penetrates through the blocking part, the clamping ring is located at the upper end of the blocking part, and the screwdriver head penetrates through the vacuum tube. The vacuum tube can be suspended, the service life of the vacuum tube is prolonged, and the gun head can be rapidly replaced.

Description

Technical Field

[0001] The invention relates to a tool for tightening fasteners, in particular to a vacuum picking and tightening device with a suspendable vacuum tube. Background Art

[0002] The traditional method of tightening screws is to hold the screws by hand and tighten them with a tightening gun. Later, with the advancement of technology, the screws entered the gun head of the tightening gun through the screw channel. With the advancement of technology, tightening devices are currently used to tighten screws to improve tightening efficiency. Tightening devices are widely used in automobiles, new energy, home appliances and other industries. The current tightening devices have the following defects:

[0003] The outer diameter of the vacuum tube is limited due to interference, and the suction head of the vacuum tube cannot fully cover the screw head, or the screw may be crooked when being adsorbed, or a quick-change tightening device cannot be used; the screw is always in contact with the vacuum tube, and the vacuum tube adsorbs the screw into the threaded hole. The tightening cylinder continues to move downward, driving the vacuum tube to continue to press the screw down until the vacuum tube is compressed by the reaction force of the screw. The vacuum tube spring is compressed and differentially output with the bit until the bit enters the drive slot of the screw head. The bit rotates to tighten the screw. At this time, the vacuum tube spring gradually recovers. During the whole process, the vacuum tube is in contact with the screw head and will bear the friction of the screw and the eccentric load caused by the rotation of the screw head. The bit of the current tightening device can only be used for one type of screw. Therefore, when the gun head needs to be replaced (the bit is located at the gun head), the machine can only be stopped to dismantle the vacuum tube and other structures and replace the new gun head, which is inefficient. Summary of the invention

[0004] The invention provides a vacuum picking and tightening device with a vacuum tube capable of hovering. The vacuum tube can be hovered to increase the service life of the vacuum tube, and a quick-change structure is designed to quickly replace a gun head.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A vacuum pickup tightening device with a vacuum tube capable of hovering comprises a quick-change gun head, a gun head seat assembly, a tightening stroke assembly, a stroke assembly and a screwdriver, one end of the gun head seat assembly is mounted on the stroke assembly, the quick-change gun head is mounted on the lower end of the gun head seat assembly, the tightening stroke assembly is mounted on the upper end of the gun head seat assembly, the screwdriver is connected to the tightening stroke assembly, and the quick-change gun head is connected to the upper end of the tightening stroke assembly, wherein:

[0007] The quick-change gun head comprises a vacuum tube, a batch head, a gun head locking sleeve, a positioning ring and a nut. A clamping ring is provided on the upper outer side of the vacuum tube, a clamping groove corresponding to the clamping ring is provided on the inner side of the bottom of the gun head locking sleeve, a fixing ring mounting groove is provided on the inner side of the top of the gun head locking sleeve, the fixing ring is installed at the fixing ring mounting groove, a nut mounting surface and a positioning ring mounting surface are provided on the outer side of the lower end of the gun head locking sleeve, the nut is arranged on the nut mounting surface, a stopper is provided at the bottom of the nut, the vacuum tube passes through the stopper, the clamping ring is located at the upper end of the stopper, the positioning ring is located at the upper end of the nut, a pushing portion is provided at the upper end of the batch head, the diameter of the pushing portion is larger than the diameter of the lower end of the batch head, the upper end of the batch head passes through the vacuum tube, a supporting slider is provided at the lower side of the pushing portion of the batch head, a spring is installed between the supporting slider and the top of the vacuum tube, the batch head passes through the spring, the supporting slider is arranged on the lower side of the fixing ring, and a connecting block is installed on the top of the batch head.

[0008] Preferably, the gun head seat assembly includes a gun head seat, a cylinder barrel 1 is provided at the bottom of the gun head seat, a cylinder barrel 2 and a cylinder barrel 3 are provided in the middle of the gun head seat, the cylinder barrel 3 is located on the inner side of the cylinder barrel 1, the cylinder barrel 2 is located on the upper side of the cylinder barrel 3, the upper end of the piston is arranged at one cylinder barrel, a limiting part is provided on the top of the piston, a fixing flange is installed at the bottom of the gun head seat, the lower end of the piston passes through the fixing flange, the outer diameter of the limiting part is larger than the inner diameter of the fixing flange, a pushing part is provided inside the piston, an inclined surface is provided on the downward side of the pushing part, a gun head positioning sleeve is installed on the inner side of the cylinder barrel 3, a compression spring is installed at the upper end of the pushing part and the bottom of the gun head seat, the compression spring is sleeved on the gun head positioning sleeve, a plurality of circumferentially distributed holes 1 are provided at the lower end of the gun head positioning sleeve, a steel ball is provided at the one hole, and when the steel ball is located at the one hole, one side of the steel ball is located in the gun head positioning sleeve, and the other side of the steel ball is located on the outside of the gun head positioning sleeve.

[0009] Preferably, the upper end of the gun head locking sleeve is located on the inner side of the lower end of the gun head positioning sleeve, a steel ball groove is provided on the outer side of the upper end of the gun head locking sleeve, the gun head seat is provided with a driving hole one, the driving hole one is connected with the cylinder barrel one, the tightening stroke assembly is provided with a flange, the flange is installed on the top of the gun head seat, the flange is provided with a gun head quick-change cylinder air inlet interface, and the gun head quick-change cylinder air inlet interface is connected with the driving hole one.

[0010] Preferably, the lower end of the gun head seat is installed on the gun head seat mounting seat, the gun head seat mounting seat is installed on the driving block of the stroke assembly, the gun head seat mounting seat is provided with a vacuum suction channel 1, the gun head seat is provided with a vacuum suction channel 2, the vacuum suction channel 2 connects the vacuum suction channel 1 and the cylinder barrel 2, and a vacuum suction interface is installed at one end of the vacuum suction channel 1.

[0011] Preferably, a sealing ring installation groove and two grooves are provided at the limiting portion of the piston, one of which is used to install a sensor probe. When the limiting portion of the piston moves to the lowermost end, the other groove is connected to the driving hole, and one end of the groove faces the lower end of the piston. A sensor avoidance groove is provided at one end of the gun head seat, and a sensor mounting hole is provided on the fixing flange. The sensor is installed at the sensor mounting hole, and one end of the sensor is located at the sensor avoidance groove. The sensor avoidance groove corresponds to the groove for installing the sensor probe.

[0012] Preferably, the tightening stroke assembly also includes a cylinder body, the cylinder body includes cylinder body 1 and cylinder body 2, the outer diameter of cylinder body 1 is larger than the outer diameter of cylinder body 2, the flange is sleeved on cylinder body 2, the gun head seat is provided with a cylinder body 1 mounting groove, cylinder body 1 is located in the cylinder body 1 mounting groove, the piston rod passes through the center of cylinder body 1, the top of the piston rod is connected to the rear piston, the bottom of the piston rod is connected to the front piston, the front piston is slidably connected to the inner wall of the gun head seat, and the rear piston is connected to the cylinder body The inner wall of the second is slidably connected, the front piston is connected to the transfer sleeve, the upper end of the transfer sleeve is located inside the piston rod, the lower end of the transfer sleeve is installed with connecting block two, the connection between connecting block two and connecting block one is provided with corresponding tooth one, the upper inner wall of the transfer sleeve is connected to the spline shaft, the top of the spline shaft is connected to the adapter block, the upper end of the adapter block is installed with a transmission shaft, the outer side of the adapter block is installed with a bearing, the bearing is installed at the adapter ring, the adapter ring connects the cylinder barrel two and the adapter block, and the adapter block is connected to the screwdriver.

[0013] Preferably, a screwdriver bit tightening cylinder in-situ interface and a screwdriver bit tightening cylinder working position interface are also installed on the upward side of the flange. The screwdriver bit tightening cylinder in-situ interface is located between the screwdriver bit tightening cylinder working position interface and the gun head quick-change cylinder air inlet interface. The flange is provided with channel one, channel two and channel three. Channel one connects the gun head quick-change cylinder air inlet interface and driving hole one, channel two is connected with the internal space of cylinder barrel two, the top of channel two is located between cylinder barrel one and the rear piston, and the gun head seat is provided with channel four, channel four is connected with channel three and the internal space of cylinder barrel two, and one end of channel four is located between the front piston and cylinder barrel one.

[0014] Preferably, two magnetic switch mounting grooves are provided on the cylinder body, and magnetic switches are installed in the magnetic switch mounting grooves.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention realizes quick change of quick change gun heads through self-locking and unlocking of steel balls; the vacuum tube can be suspended: it can be used in working conditions of peripheral interference of screws, the vacuum tube is suspended outside the interference height, the outer diameter is not affected by the peripheral interference of the screw head, and the vacuum tube can fully cover the screw head; after the screw enters the threaded hole, the vacuum tube is separated from the screw, and the vacuum tube is not affected by the rotational eccentric load force and the friction force of the screw during the tightening process of the screw, thereby improving the service life of the vacuum tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the application of an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of a quick-change gun head according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of a vacuum tube according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic diagram of a gun head locking sleeve according to an embodiment of the present invention.

[0022] Figure 6 It is a cross-sectional view of a gun head locking sleeve according to an embodiment of the present invention.

[0023] Figure 7 It is a schematic diagram of a nut according to an embodiment of the present invention.

[0024] Figure 8 It is a cross-sectional view of a nut according to an embodiment of the present invention.

[0025] Fig. 9 It is a schematic diagram of a batch head according to an embodiment of the present invention.

[0026] Fig.10 It is a cross-sectional view of a screwdriver bit according to an embodiment of the present invention.

[0027] Fig.11 It is a schematic diagram of a gun head seat according to an embodiment of the present invention.

[0028] Fig.12 2 is a schematic diagram of a gun head seat from another perspective of an embodiment of the present invention.

[0029] Fig.13 It is a cross-sectional view of a gun head seat assembly according to an embodiment of the present invention.

[0030] Fig.14 It is a schematic diagram of a gun head seat assembly according to an embodiment of the present invention.

[0031] Fig.15 It is a schematic diagram of the gun head seat assembly from another perspective of an embodiment of the present invention.

[0032] Fig.16 It is a partial schematic diagram of a gun head seat assembly according to an embodiment of the present invention.

[0033] Fig.17 It is another partial schematic diagram of the gun head seat assembly according to an embodiment of the present invention.

[0034] Fig.18 It is a schematic diagram of a piston according to an embodiment of the present invention.

[0035] Fig.19 It is a cross-sectional view of a piston according to an embodiment of the present invention.

[0036] Fig. 20 It is a schematic diagram of a sensor probe installed on a piston according to an embodiment of the present invention.

[0037] Fig.21 It is a schematic diagram of a fixing flange according to an embodiment of the present invention.

[0038] Fig. 22 It is a schematic diagram of a gun tip positioning sleeve according to an embodiment of the present invention.

[0039] Fig.23 It is a cross-sectional view of a gun head seat according to an embodiment of the present invention.

[0040] Fig.24 It is a partial schematic diagram of an embodiment of the present invention.

[0041] Fig.25 It is another partial schematic diagram of an embodiment of the present invention.

[0042] Fig.26 It is a cross-sectional view of a tightening stroke assembly according to an embodiment of the present invention.

[0043] Fig. 27 It is a schematic diagram of a tightening stroke assembly according to an embodiment of the present invention.

[0044] Fig.28 It is a partial schematic diagram of a tightening stroke assembly according to an embodiment of the present invention.

[0045] Fig.29 It is a partial schematic diagram of a tightening stroke assembly according to an embodiment of the present invention.

[0046] Fig.30 It is a schematic diagram of a cylinder body according to an embodiment of the present invention.

[0047] Fig.31 It is a schematic diagram of a flange according to an embodiment of the present invention.

[0048] Fig.32 It is a schematic diagram of the combination of a fixing ring and a supporting sliding block according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] As shown in the figure, an embodiment of the present invention discloses a vacuum picking and tightening device with a vacuum tube that can be suspended, comprising a quick-change gun head 1, a gun head seat assembly 2, a tightening stroke assembly 3, a stroke assembly 4 and a screwdriver 5, one end of the gun head seat assembly 2 is installed on the stroke assembly 4, the quick-change gun head 1 is installed at the lower end of the gun head seat assembly 2, the tightening stroke assembly 3 is installed at the upper end of the gun head seat assembly 2, the screwdriver 5 is connected to the tightening stroke assembly 3, the quick-change gun head 1 is connected to the upper end of the tightening stroke assembly 3, the stroke assembly 4 drives the quick-change gun head 1, the gun head seat assembly 2, the tightening stroke assembly 3 and the screwdriver 5 to move as a whole, the screwdriver 5 drives the transmission shaft in the tightening stroke assembly 3 to rotate, the transmission shaft drives the spline shaft to rotate, the spline shaft drives the transfer sleeve to rotate, and the transfer sleeve drives the bit to rotate to tighten the screw.

[0051] The quick-change gun head 1 includes a vacuum tube 6, a batch head 7, a gun head locking sleeve 8, a positioning ring 9 and a nut 10. A clamping ring 61 is provided on the upper outer side of the vacuum tube 6, and a clamping groove 81 corresponding to the clamping ring 61 is provided on the inner side of the bottom of the gun head locking sleeve 8. A fixing ring mounting groove 82 is provided on the inner side of the top of the gun head locking sleeve 8. The fixing ring 11 is installed at the fixing ring mounting groove 82. A nut mounting surface 83 and a positioning ring mounting surface 84 are provided on the outer side of the lower end of the gun head locking sleeve 8. The nut 10 is arranged on the nut mounting surface 83, and the bottom of the nut 10 is provided with The stopper 101, the vacuum tube 6 passes through the stopper 101, the clamping ring 61 is located at the upper end of the stopper 101, the positioning ring 9 is located at the upper end of the nut 10, the upper end of the screwdriver 7 is provided with a pushing part 71, the diameter of the pushing part 71 is larger than the diameter of the lower end of the screwdriver, the upper end of the screwdriver 7 passes through the vacuum tube 6, the lower side of the pushing part of the screwdriver 7 is provided with a supporting slider 12, a spring 13 is installed between the supporting slider 12 and the top of the vacuum tube 6, the screwdriver 7 passes through the spring 13, the supporting slider 12 is arranged on the lower side of the fixing ring 11, and a connecting block 14 is installed on the top of the screwdriver 7. When the rear end pushes the screwdriver 7 to move downward, the screwdriver 7 moves downward due to the action of the spring, but the clamping ring 61 of the vacuum tube 6 is stuck between the gun head locking sleeve 8 and the nut 10, the vacuum tube 6 will not move, and the end of the screwdriver 7 will extend from the bottom of the vacuum tube 6. The outer side of the gun head locking sleeve 8 is blocked by the steel ball 21 of the gun head seat assembly 2, so the gun head locking sleeve 8 will not move.

[0052] The quick-change gun head 1 can be stored in the quick-change seat 15, and the positioning ring 9 plays a positioning role. When the positioning ring 9 is stuck in the quick-change seat 15, it indicates that the quick-change gun head 1 has been placed. The quick-change seat 15 here uses an existing quick-change seat, such as a flexible floating quick-change seat with a Chinese patent application number of 2024200326081 applied by our company, which will not be introduced in detail here. The screwdriver drives the head to rotate, and the stroke component 4 drives the parts to move horizontally. These are all existing technologies and will not be described in detail here.

[0053] In one embodiment of the present invention, the gun head seat assembly 2 includes a gun head seat 16, a cylinder barrel 1 161 is provided at the bottom of the gun head seat 16, a cylinder barrel 2 162 and a cylinder barrel 3 163 are provided in the middle of the gun head seat 16, the cylinder barrel 3 163 is located on the inner side of the cylinder barrel 1 161, the cylinder barrel 2 162 is located on the upper side of the cylinder barrel 3 163, the upper end of the piston 17 is arranged at the cylinder barrel 1 161, the top of the piston 17 is provided with a limiting portion 171, the bottom of the gun head seat 16 is installed with a fixing flange 18, the lower end of the piston 17 passes through the fixing flange 18, and the outer diameter of the limiting portion 171 is greater than the inner diameter of the fixing flange 18 A pushing portion 172 is provided inside the piston 17, and an inclined surface 173 is provided on the downward side of the pushing portion 172. A gun head positioning sleeve 19 is installed on the inner side of the cylinder barrel 162. A compression spring 20 is installed at the upper end of the pushing portion 172 and the bottom of the gun head seat 16. The compression spring 20 is sleeved on the gun head positioning sleeve 19. A plurality of circumferentially distributed holes 191 are provided at the lower end of the gun head positioning sleeve 19. A steel ball 21 is provided at one of the holes. When the steel ball 21 is located at the hole 191, one side of the steel ball 21 is located in the gun head positioning sleeve 19, and the other side of the steel ball 21 is located on the outside of the gun head positioning sleeve 19. The gun head positioning sleeve 19 is threadedly connected to the gun head seat 16. When air is ventilated to the cylinder barrel 161, the piston 17 is pushed upward. At this time, the compression spring 20 is compressed, and the steel ball 21 is pushed outward by the gun head locking sleeve 8, and the gun head locking sleeve 8 cannot be locked. In this way, the quick-change gun head 1 can be separated from the gun head seat assembly 2 by gravity and stored in the quick-change seat 15. When the gun head locking sleeve 8 needs to be locked for use, the cylinder barrel 161 is evacuated, the compression spring 20 is released, and the piston 17 is pushed downward, pushing the steel ball 21 into the hole 191, and the steel ball 21 locks the gun head locking sleeve 8.

[0054] In one embodiment of the present invention, the upper end of the gun head locking sleeve 8 is located on the inner side of the lower end of the gun head positioning sleeve 19, a steel ball groove 85 is provided on the outer side of the upper end of the gun head locking sleeve 8, the gun head seat 16 is provided with a driving hole 164, the driving hole 164 is connected to the cylinder barrel 161, the tightening stroke assembly 3 is provided with a flange 22, the flange 22 is installed on the top of the gun head seat 16, and a gun head quick-change cylinder air inlet interface 23 is provided on the flange 22, and the gun head quick-change cylinder air inlet interface 23 is connected to the driving hole 164.

[0055] In one embodiment of the present invention, the lower end of the gun head seat 16 is mounted on the gun head seat mounting seat 23, the gun head seat mounting seat 23 is mounted on the driving block 24 of the stroke assembly 4, the gun head seat mounting seat 23 is provided with a vacuum suction channel 1 231, the gun head seat 16 is provided with a vacuum suction channel 2 165, the vacuum suction channel 2 165 is connected to the vacuum suction channel 1 231 and the cylinder barrel 2 162, and one end of the vacuum suction channel 1 231 is installed with a vacuum suction interface 25. A plurality of ventilation grooves 121 are provided on the edge of the supporting slider 12.

[0056] The vacuum suction channel 1 231 is connected to the vacuum suction channel 2 165, and then to the cylinder barrel 2 162 and the cylinder barrel 3 163, and then to the internal space of the gun head positioning sleeve 19, and then to the internal space of the gun head locking sleeve 8 through the ventilation groove 121, and finally to the internal space of the vacuum tube 6. The vacuum suction interface 25 is connected to the vacuum generator, and the vacuum generator works to evacuate the vacuum tube to generate negative pressure. The vacuum tube 6 realizes the adsorption of the screw.

[0057] In one embodiment of the present invention, a sealing ring mounting groove 1711 and two grooves 1712 are provided at the limiting portion 171 of the piston 17, and a sensor probe 26 is installed at one of the grooves 1712. When the limiting portion of the piston 17 moves to the lowermost end, the other groove 1712 is connected to the driving hole 164, and one end of the groove 1712 faces the lower end of the piston 17. A sensor avoidance groove 166 is provided at one end of the gun head seat 16, and a sensor mounting hole 181 is provided on the fixing flange 18. The sensor 27 is installed at the sensor mounting hole 181, and one end of the sensor 27 is located at the sensor avoidance groove 166, and the sensor avoidance groove 166 corresponds to the groove 1712 for installing the sensor probe.

[0058] In one embodiment of the present invention, the tightening stroke assembly 3 also includes a cylinder body 28, the cylinder body 28 includes a cylinder body 1 281 and a cylinder body 282, the outer diameter of the cylinder body 1 281 is larger than the outer diameter of the cylinder body 282, the flange 22 is sleeved on the cylinder body 282, the gun head seat 16 is provided with a cylinder body 1 mounting groove 167, the cylinder body 1 281 is located in the cylinder body 1 mounting groove 167, the piston rod 29 passes through the center of the cylinder body 1 281, the top of the piston rod 29 is connected to the rear piston 30, the bottom of the piston rod 29 is connected to the front piston 31, the front piston 31 is slidably connected to the inner wall of the gun head seat 16, and the rear piston 30 is connected to the cylinder body 1 The inner wall of the cylinder body 282 is slidably connected, the front piston 31 is connected to the transmission sleeve 32, the upper end of the transmission sleeve 32 is located inside the piston rod 29, the lower end of the transmission sleeve 32 is installed with a connection block 23, the connection between the connection block 23 and the connection block 14 is provided with a corresponding tooth 1 331, the inner wall of the upper end of the transmission sleeve 32 is connected to the spline shaft 34, the top of the spline shaft 34 is connected to the adapter block 35, the upper end of the adapter block 35 is installed with a transmission shaft 36, the outer side of the adapter block 35 is installed with a bearing 37, the bearing 37 is installed at the adapter ring 38, the adapter ring 38 connects the cylinder body 282 and the adapter block 39, and the adapter block 39 is connected to the screwdriver 5. The design of the spline shaft 34 can transmit the torque of the screwdriver, and ensure that the piston does not rotate with the screwdriver while transmitting the torque, that is, it can achieve the drive head to move vertically downward and can rotate at the same time, the piston rod connects the front piston and the rear piston, and the piston can only reciprocate and not rotate.

[0059] The design of the second connecting block 33 and the first connecting block 14 allows for quick engagement.

[0060] In one embodiment of the present invention, a screwdriver bit tightening cylinder in-situ interface 40 and a screwdriver bit tightening cylinder working position interface 41 are also installed on the upward side of the flange 22. The screwdriver bit tightening cylinder in-situ interface 40 is located between the screwdriver bit tightening cylinder working position interface 41 and the gun head quick-change cylinder air inlet interface 23. The flange 22 is provided with channel one 221, channel two 222 and channel three 223. Channel one 221 connects the gun head quick-change cylinder air inlet interface 23 and the driving hole one 164. Channel two 222 is communicated with the internal space of the cylinder barrel two 282. The top of channel two 222 is located between the cylinder barrel one 281 and the rear piston 30. The gun head seat 16 is provided with channel four 168. Channel four 168 is communicated with the internal space of channel three 223 and the cylinder barrel two 282. One end of channel four 168 is located between the front piston 31 and the cylinder barrel one 281. The driving hole 164 is connected to the cylinder barrel 161, so that the gas can flow from the gun head quick-change cylinder air inlet interface 23, channel 1221, driving hole 164 and cylinder barrel 161, so that the piston can be driven to move, and the piston drives the sensor probe 26 to move. The sensor is used to sense the position of the sensor 26 probe, and then determine the current position of the piston. The sensor probe 26 is pasted on the piston, and glue can be used to paste it, such as 502 glue.

[0061] The screwdriver bit is tightened and the cylinder original position interface 40 is ventilated, the gas enters the second channel 222, and then enters the second cylinder barrel 282, pushing the rear piston to move upward, driving the transfer sleeve 32 to move upward, and the second connecting block 33 also moves upward, and the spring 13 also resets, pushing the screwdriver bit 7 to move upward, realizing the reset, that is, restoring the screwdriver bit to its original position.

[0062] The screwdriver bit is tightened by ventilation at the cylinder working position interface 41, and the gas enters channel three 223, then enters channel four 168, and then enters between the front piston 31 and the cylinder barrel 281, pushing the front piston 31 to move downward, and then pushing the transfer sleeve 32 to move downward, and finally driving the screwdriver bit 7 to move downward, and finally enter the working position, and the screwdriver bit 7 rotates while moving downward to tighten the screw.

[0063] In one embodiment of the present invention, two magnetic switch mounting grooves 283 are provided on the cylinder body 28, and a magnetic switch 42 is installed at the magnetic switch mounting grooves 283. A magnetic ring 43 is installed on the outer wall of the rear piston. The magnetic switch 42 senses the position of the rear piston by sensing the position of the magnetic ring 43.

[0064] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A vacuum pick-up and tightening device with a suspendable vacuum tube, characterized in that: It includes a quick-change gun head, a gun head seat assembly, a tightening stroke assembly, a stroke assembly and a screwdriver. One end of the gun head seat assembly is installed on the stroke assembly, the quick-change gun head is installed at the lower end of the gun head seat assembly, the tightening stroke assembly is installed at the upper end of the gun head seat assembly, the screwdriver is connected to the tightening stroke assembly, and the quick-change gun head is connected to the upper end of the tightening stroke assembly, wherein: The quick-change gun head comprises a vacuum tube, a batch head, a gun head locking sleeve, a positioning ring and a nut. A clamping ring is provided on the upper outer side of the vacuum tube, a clamping groove corresponding to the clamping ring is provided on the inner side of the bottom of the gun head locking sleeve, a fixing ring mounting groove is provided on the inner side of the top of the gun head locking sleeve, the fixing ring is installed at the fixing ring mounting groove, a nut mounting surface and a positioning ring mounting surface are provided on the outer side of the lower end of the gun head locking sleeve, the nut is arranged on the nut mounting surface, a stopper is provided at the bottom of the nut, the vacuum tube passes through the stopper, the clamping ring is located at the upper end of the stopper, the positioning ring is located at the upper end of the nut, a pushing portion is provided at the upper end of the batch head, the diameter of the pushing portion is larger than the diameter of the lower end of the batch head, the upper end of the batch head passes through the vacuum tube, a supporting slider is provided at the lower side of the pushing portion of the batch head, a spring is installed between the supporting slider and the top of the vacuum tube, the batch head passes through the spring, the supporting slider is arranged on the lower side of the fixing ring, and a connecting block is installed on the top of the batch head.

2. The vacuum pickup and tightening device with a suspendable vacuum tube according to claim 1, characterized in that: The gun head seat assembly includes a gun head seat, a cylinder barrel 1 is provided at the bottom of the gun head seat, a cylinder barrel 2 and a cylinder barrel 3 are provided in the middle of the gun head seat, the cylinder barrel 3 is located on the inner side of the cylinder barrel 1, the cylinder barrel 2 is located on the upper side of the cylinder barrel 3, the upper end of the piston is arranged at one cylinder barrel, a limiting part is provided on the top of the piston, a fixing flange is installed at the bottom of the gun head seat, the lower end of the piston passes through the fixing flange, the outer diameter of the limiting part is larger than the inner diameter of the fixing flange, a pushing part is provided inside the piston, an inclined surface is provided on the downward side of the pushing part, a gun head positioning sleeve is installed on the inner side of the cylinder barrel 3, a compression spring is installed at the upper end of the pushing part and the bottom of the gun head seat, the compression spring is sleeved on the gun head positioning sleeve, a plurality of circumferentially distributed holes 1 are provided at the lower end of the gun head positioning sleeve, a steel ball is provided at the first hole, and when the steel ball is located at the first hole, one side of the steel ball is located in the gun head positioning sleeve, and the other side of the steel ball is located on the outside of the gun head positioning sleeve.

3. The vacuum pickup and tightening device with a suspendable vacuum tube according to claim 2, characterized in that: The upper end of the gun head locking sleeve is located on the inner side of the lower end of the gun head positioning sleeve, a steel ball groove is provided on the outer side of the upper end of the gun head locking sleeve, a driving hole one is provided on the gun head seat, driving hole one is connected with cylinder barrel one, a tightening stroke assembly is provided with a flange, the flange is installed on the top of the gun head seat, a gun head quick-change cylinder air inlet interface is provided on the flange, and the gun head quick-change cylinder air inlet interface is connected with driving hole one.

4. The vacuum pickup and tightening device with a suspendable vacuum tube according to claim 3, characterized in that: The lower end of the gun head seat is installed on the gun head seat mounting seat, and the gun head seat mounting seat is installed on the driving block of the stroke assembly. The gun head seat mounting seat is provided with a vacuum suction channel 1, and the gun head seat is provided with a vacuum suction channel 2. The vacuum suction channel 2 connects the vacuum suction channel 1 and the cylinder barrel 2, and a vacuum suction interface is installed at one end of the vacuum suction channel 1.

5. The vacuum pickup and tightening device with a suspendable vacuum tube according to claim 4, characterized in that: A sealing ring installation groove and two grooves are provided at the limiting part of the piston, one of which is used to install a sensor probe. When the limiting part of the piston moves to the lowermost end, the other groove is connected with the driving hole, and one end of the groove faces the lower end of the piston. A sensor avoidance groove is provided at one end of the gun head seat, and a sensor mounting hole is provided on the fixing flange. The sensor is installed at the sensor mounting hole, and one end of the sensor is located at the sensor avoidance groove. The sensor avoidance groove corresponds to the groove for installing the sensor probe.

6. The vacuum pick-up and tightening device with a suspendable vacuum tube according to claim 5, characterized in that: The tightening stroke assembly also includes a cylinder body, which includes a cylinder body 1 and a cylinder body 2. The outer diameter of the cylinder body 1 is larger than the outer diameter of the cylinder body 2. The flange is sleeved on the cylinder body 2. The gun head seat is provided with a cylinder body 1 mounting groove. The cylinder body 1 is located in the cylinder body 1 mounting groove. The piston rod passes through the center of the cylinder body 1. The top of the piston rod is connected to the rear piston. The bottom of the piston rod is connected to the front piston. The front piston is slidably connected to the inner wall of the gun head seat. The rear piston is connected to the cylinder body 2. The inner wall is slidingly connected, the front piston is connected to the transfer sleeve, the upper end of the transfer sleeve is located inside the piston rod, the lower end of the transfer sleeve is installed with connecting block 2, and the connection between connecting block 2 and connecting block 1 is provided with corresponding tooth 1, the upper inner wall of the transfer sleeve is connected to the spline shaft, the top of the spline shaft is connected to the adapter block, the upper end of the adapter block is installed with a transmission shaft, the outer side of the adapter block is installed with a bearing, the bearing is installed at the adapter ring, the adapter ring connects the cylinder barrel 2 and the adapter block, and the adapter block is connected to the screwdriver.

7. The vacuum pick-up and tightening device with a suspendable vacuum tube according to claim 6, characterized in that: The upward side of the flange is also equipped with a screwdriver bit tightening cylinder in-situ interface and a screwdriver bit tightening cylinder working position interface. The screwdriver bit tightening cylinder in-situ interface is located between the screwdriver bit tightening cylinder working position interface and the gun head quick-change cylinder air inlet interface. The flange is provided with channel one, channel two and channel three. Channel one connects the gun head quick-change cylinder air inlet interface and driving hole one, channel two is connected with the internal space of cylinder barrel two, the top of channel two is located between cylinder barrel one and the rear piston, and the gun head seat is provided with channel four, channel four is connected with channel three and the internal space of cylinder barrel two, and one end of channel four is located between the front piston and cylinder barrel one.

8. The vacuum pickup and tightening device with a suspendable vacuum tube according to claim 7, characterized in that: Two magnetic switch mounting grooves are arranged on the cylinder barrel, magnetic switches are installed at the magnetic switch mounting grooves, and a magnetic ring is installed on the outer wall of the rear piston.

9. The vacuum pick-up and tightening device with a suspendable vacuum tube according to claim 1, characterized in that: The edge of the supporting slide block is provided with a plurality of ventilation grooves.

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