Quick-change mechanism and tightening device thereof

Abstract

The quick-change mechanism and the tightening device thereof comprise a quick-change female head which is provided with an axially-arranged channel, and a butt joint port is arranged in the circumferential direction of the quick-change female head; the rotating shaft is arranged in the channel, one end of the rotating shaft is connected with a limiting structure, and the limiting structure limits the axial movement of the rotating shaft in one direction; the quick-change male head can be detachably connected with the quick-change female head in a butt joint mode in the axial direction, a rotatable bit adapter is arranged in the quick-change male head, the bit adapter and the rotating shaft are located on the same axis, and after the quick-change male head and the quick-change female head are connected in a butt joint mode, the bit adapter and the rotating shaft are connected in a clamped mode and rotate synchronously. And through the unique design of the limiting structure and the butt joint mechanism, the stability and accuracy of the tool head in the using process are ensured, the tool head is effectively prevented from loosening or falling off, and the operation safety is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic assembly, in particular to a quick-change mechanism and a tightening device thereof. Background Art

[0002] Screw tightening devices are widely used in assembly lines, such as those for automobiles, new energy, white household appliances, and electronic communications. For workstations involving screw tightening on the production line, dedicated screw tightening devices are configured. For workstations that need to tighten screws of multiple specifications, multiple types of tightening devices need to be configured, which not only has high requirements for the spatial layout of the workstation, but also requires multiple sets of tightening tool systems, resulting in high costs, complex processes, and slow beats.

[0003] For the situation of tightening screws of multiple specifications, the following solutions are available at present: tightening at multiple stations according to the screws, or configuring multiple specifications of dedicated tightening devices at one station, or replacing some parts of the tightening device to adapt to different screws. However, the above measures are difficult to overcome the problem of slow beats.

[0004] Therefore, we propose a quick-change mechanism and a tightening device thereof. Summary of the Utility Model

[0005] The applicant of the present utility model aims at the above-mentioned disadvantages in the existing production technology, and provides a quick-change mechanism and a tightening device thereof. Through the unique design of the limiting structure and the docking mechanism, the stability and accuracy of the tool head during use are ensured, effectively preventing the loosening or falling off of the tool head, and further improving the safety of operation.

[0006] The technical solution adopted by the present utility model is as follows:

[0007] A quick-change mechanism includes:

[0008] A quick-change female head, which is provided with an axially arranged channel and a docking port arranged circumferentially along the quick-change female head;

[0009] A rotating shaft, which is arranged in the channel, and a limiting structure is connected to one end of the rotating shaft, and the limiting structure restricts the axial movement of the rotating shaft in one direction;

[0010] A quick-change male head, which can be detachably docked with the quick-change female head axially, and a rotatable bit adapter is arranged in the quick-change male head. The bit adapter and the rotating shaft are on the same axis, and after the quick-change male and female heads are docked, the bit adapter and the rotating shaft are mutually clamped and rotate synchronously.

[0011] Furthermore, a docking mechanism is also arranged at the connection between the quick-change female head and the quick-change male head, which moves in a direction perpendicular to the side walls of the quick-change male and female heads and is used to controllably restrict the axial movement of the quick-change male and female heads.

[0012] Further, the docking mechanism includes a spring plunger, which consists of a latch pin and a spring sleeved outside the latch pin. The latch pin is fixed to the female quick-change head through the spring, and jacks are provided at corresponding positions of the female quick-change head and the male quick-change head.

[0013] Furthermore, a bearing is provided in the channel of the female quick-change head, and the width of any one side of the limiting structure is greater than the inner diameter of the bearing.

[0014] Further, the limiting structure is integrally formed with the rotating shaft or fixedly sleeved on the rotating shaft.

[0015] Further, the female quick-change head includes a first female quick-change head directly used for bit connection, and when the female quick-change head is the first female quick-change head, the rotating shaft is a bit; and a second female quick-change head used for docking fasteners, and when the female quick-change head is the second female quick-change head, the rotating shaft is a sleeve.

[0016] Further, the first female quick-change head further includes:

[0017] A cylinder barrel, which is threadedly docked with the first female quick-change head and has a channel in the cylinder barrel for the bit to pass through conveniently;

[0018] A screw suction tube that sleeves the bit to adsorb screws and is connected between the cylinder barrel and the first female quick-change head at one end;

[0019] A gasket ring, which is located inside the cylinder barrel;

[0020] A compression spring, which is installed between the gasket ring and the quick-change head to provide stable elasticity.

[0021] A tightening device includes the quick-change mechanism according to any one of the claims, and its structure further includes:

[0022] A tightening tool, which is connected to the male quick-change head and provides a rotational driving force for the bit adapter.

[0023] Further, an air vent joint for air intake is provided on the male quick-change head.

[0024] The beneficial effects of the present utility model are as follows:

[0025] The structure of the present utility model is compact, reasonable, and easy to operate. The mechanism is ingeniously designed and can quickly replace the tool head, thus greatly improving the work efficiency, and is especially suitable for operation scenarios that require frequent replacement of different tool heads. Through the unique design of the limiting structure and the docking mechanism, the stability and accuracy of the tool head during use are ensured, effectively preventing the loosening or falling off of the tool head, and further enhancing the safety of operation. In addition, the mechanism also has wide applicability and can be used in cooperation with different types of tool heads to meet diverse operation requirements. Finally, the quick-change mechanism has a simple structure, is convenient to maintain, reduces the use cost, and brings real economic benefits to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the present utility model.

[0027] Figure 2 This is a schematic structural diagram of the tightening device of the present utility model including the first quick-change female head.

[0028] Figure 3 This is a schematic structural diagram of the tightening device of the present utility model including the second quick-change female head.

[0029] Wherein:

[0030] 1. Quick-change female head; 2. Quick-change male head; 3. Tightening tool; 11. Nail suction tube; 12. Bit; 110. First spring plunger; 13. Cylinder barrel; 14. Gasket ring; 15. Compression spring; 16. First quick-change female head; 17. Ventilation joint; 18. Bit adapter; 19. Tool connector; 111. First bearing; 120. Second spring plunger; 121. Second bearing; 124. Circlip; 122. Second quick-change female head; 123. Sleeve. DETAILED DESCRIPTION OF THE INVENTION

[0031] The following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings.

[0032] The present utility model provides a quick-change mechanism and its tightening device, which realizes quick change. One set of tightening device is configured with multiple quick-change heads, and can tighten various specifications of screws, solving the problems of high cost, complex process and slow beat.

[0033] Embodiment 1

[0034] As Figures 1 to 3 shown, this embodiment provides a quick-change mechanism, which includes a quick-change female head 1, a rotating shaft and a quick-change male head 2. This mechanism is ingeniously designed and can realize the quick replacement of the quick-change female head 1, greatly improving the work efficiency.

[0035] The quick-change female head 1 is provided with an axial channel, and a docking port is arranged along the circumferential direction of the quick-change female head, which is convenient for docking with the quick-change male head 2. The rotating shaft is arranged in the channel, and a limiting structure is connected to one end of the rotating shaft, and this limiting structure restricts the axial movement of the rotating shaft in one direction, thus ensuring the stability of the rotating shaft during use.

[0036] The quick-change male head 2 can be detachably docked with the quick-change female head 1 along the axial direction. Inside the quick-change male head 2, a rotatable bit adapter 18 is arranged. This bit adapter 18 is on the same axis as the rotating shaft. When the quick-change male head 2 and the quick-change female head 1 are docked, the bit adapter 18 will be engaged with the rotating shaft, so that they can rotate synchronously.

[0037] In order to further enhance the stability of the connection between the quick-change male head 2 and the quick-change female head 1, the present invention also provides a docking mechanism at the connection between the quick-change female head 1 and the quick-change male head 2. This docking mechanism can move along the direction perpendicular to the side walls of the quick-change male and female heads, and is used to controllably limit the axial movement of the quick-change male and female heads. Specifically, the docking mechanism includes a spring plunger, which is composed of a pin and a spring sleeved outside the pin. The pin is fixed on the quick-change female head 1 through the spring. At the same time, jacks are provided at the corresponding positions of the quick-change female head 1 and the quick-change male head 2. When the two are docked, the pin will be inserted into the jack, thereby achieving a stable connection.

[0038] Inside the channel of the quick-change female head 1, a bearing is also provided to reduce the frictional resistance of the rotating shaft and make its rotation smoother. And the width of any one side of the limiting structure is greater than the inner diameter of the bearing, which can effectively prevent the axial movement of the rotating shaft in the bearing.

[0039] The limiting structure and the rotating shaft can be integrally formed or fixedly sleeved on the rotating shaft. In this embodiment, the limiting structure adopts an external hexagonal structure where the bit 12 is docked with the bit adapter 18. When the bit 12 is docked with the bit adapter 18, the external hexagonal structure can achieve the positioning of one side of the bit 12. At the same time, the external hexagonal structure contacts the bearing 111, which can just position the other side of the bit 12, thereby effectively preventing the bit 12 from loosening during use.

[0040] There are two types of quick-change female heads 1. One is the quick-change female head one 16 directly used for connecting the bit 12. At this time, the rotating shaft is the bit 12;

[0041] In another embodiment, the quick-change female head 1 is the quick-change female head two 122 used for docking fasteners. At this time, the rotating shaft is the sleeve 123. This design enables the quick-change mechanism to have a wider range of application scenarios, and different quick-change female heads 1 can be selected according to actual needs.

[0042] For the quick-change female head one 16, it also includes a cylinder 13, a screw suction tube 11, a gasket 14, and a compression spring 15. The cylinder 13 is docked with the quick-change female head one 16 through threads, and a channel for the bit 12 to pass through is provided inside it. The screw suction tube sleeves the bit to adsorb the screw, and one end of it is connected between the cylinder 13 and the quick-change female head one 16, which can play a role in stabilizing and guiding. The gasket 14 is located inside the cylinder 13, and the compression spring 15 is installed between the gasket 14 and the quick-change head, which can provide stable elasticity, thereby ensuring the stability and durability of the quick-change mechanism during use.

[0043] When it comes to non-external hexagonal screws, the quick-change female head includes the quick-change female head one 16, the cylinder barrel 13, the screw suction pipe 11, the bit 12, the spring plunger one 110, the compression spring 15, the spacer ring 14, the bearing one 111, etc. The quick-change female head one 16 is provided with a slot feature to cooperate with the tool connecting piece 19, and the quick-change female head one 16 is provided with a threaded hole to cooperate with the spring plunger one 110 to achieve the quick-release function. The quick-change female head one 16 is provided with a vent hole. After the quick-change female head one 16 and the tool connecting piece 19 are installed, a ventilation channel is formed. The cylinder barrel 13 is installed on the quick-change female head one 16, the screw suction pipe 11 is installed in the cylinder barrel 13, there is a spacer ring 14 in the cylinder barrel 13, and the compression spring 15 is installed between the spacer ring 14 and the quick-change female head one 16. The bearing one 111 is installed in the quick-change female head one 16, and the outer hexagon at the end of the bit 12 is inserted into the inner hexagon at the front end of the bit adapter 18, and is driven through the hexagon.

[0044] By setting the compression spring 15, the screw suction pipe 11 has a certain floating range in the axial direction.

[0045] When it comes to external hexagonal screws, the quick-change female head includes the quick-change female head two 122, the sleeve 123, the spring plunger two 120, the bearing two 121, the snap ring 124, etc. One end of the sleeve 123 is provided with an inner hexagonal groove to facilitate the adsorption of the external hexagonal screw. At the same time, a limiting structure is fixedly connected to the other end of the sleeve 123 to improve the limiting effect on the sleeve 123.

[0046] The quick-change female head two 122 is provided with a slot feature to cooperate with the tool connecting piece 19, and the quick-change female head two 122 is provided with a threaded hole to cooperate with the spring plunger two 120 to achieve the quick-release function. The sleeve 123 is provided with an internal hole, which is connected to the end cross-through hole. Through the inner cavity after the quick-change female head two 122 and the tool connecting piece 19 are installed, a ventilation channel is formed. The bearing two 121 is installed in the quick-change female head two 122, the snap ring 124 is installed on the sleeve 123 to prevent the sleeve 123 from falling off, and the hexagon at the end of the sleeve 123 is inserted into the inner hexagon at the front end of the bit adapter 18, and is driven through the hexagon.

[0047] In this embodiment, air channels are provided along the axial direction inside both the sleeve 123 and the screw suction pipe 11, and the air channels communicate with the ventilation joint 17 to achieve the suction of the screw.

[0048] Embodiment Two:

[0049] On the basis of Embodiment One, this embodiment provides a tightening device, which includes the quick-change mechanism in Embodiment One. Specifically, the tightening device further includes a tightening tool 3, which is connected to the quick-change male head 2 and can provide a rotational driving force for the bit adapter 18.

[0050] Generally speaking, the quick-change mechanism and tightening device provided by the present invention have the advantages of compact structure, convenient use, high stability, etc. Through ingenious design, the quick replacement of the tool head is realized, greatly improving the work efficiency. At the same time, the design of the limit structure and the docking mechanism also ensures the stability and durability of the quick-change mechanism during use. Such a quick-change mechanism and tightening device can be widely applied to various occasions that require frequent replacement of tool heads, such as the fields of mechanical manufacturing, automobile maintenance, etc., and have broad market prospects and application values.

[0051] The utility model includes a quick-change male head 2, a quick-change female head 1, a vacuum assembly and a tightening tool 3. The quick-change male head includes a tool connector 19, a bit adapter 18, an air vent connector 17, etc. One end of the tool connector 19 is provided with a slot feature and a through hole to cooperate with the slot of the quick-change female head 16 and the spring plunger 110 to realize the function of quick rotation and disassembly. The tool connector 19 is provided with an air vent connector hole, and the air vent connector 17 is installed on the tool connector 19. The air vent connector 17 is connected to the vacuum assembly to realize the vacuum demand. The bit adapter 18 is used to connect the tightening tool 3 and the bit 12 / socket 123.

[0052] The specific working principle of this embodiment is as follows:

[0053] When using this device for screw tightening operations, first select the appropriate quick-change female head according to the type of the screw (non-external hexagon or external hexagon), and connect it to the quick-change male head 2 through the quick-disassembly function. Subsequently, start the vacuum assembly. Through the air vent connector 17 and the corresponding air vent channels, a vacuum suction force is generated at the end of the screw suction tube 11 or the socket 123, and the screw can be easily sucked. Next, use the tightening tool 3 to accurately tighten the screw to the target position through the bit adapter 18 and the bit 12 (or socket 123). During the whole process, the quick-disassembly function greatly improves the work efficiency, and the vacuum suction function ensures the accurate placement of the screw, thus significantly improving the operation quality and efficiency.

[0054] The screw tightening device with vacuum suction function provided by the utility model realizes the perfect combination of quick replacement, stable suction and efficient tightening through ingenious structural design and high-precision manufacturing process. In practical applications, this device can significantly improve the work efficiency and operation quality of screw tightening operations, bringing convenience and benefits to related industries.

[0055] The above description is an explanation of the utility model, not a limitation of the utility model. The scope defined by the utility model can be seen in the claims. Within the protection scope of the utility model, any form of modification can be made.

Claims

1. A quick-change mechanism, characterized in that, Comprising: A quick-change female head (1) which is provided with an axially arranged channel and has a mating interface arranged circumferentially around the quick-change female head; A rotating shaft which is arranged in the channel, and a limiting structure is connected to one end of the rotating shaft, and the limiting structure restricts the axial movement of the rotating shaft in one direction; A quick-change male head (2) which can be detachably mated with the quick-change female head (1) axially, and a rotatable bit adapter (18) is arranged in the quick-change male head (2), the bit adapter (18) is on the same axis as the rotating shaft, and after the quick-change male and female heads are mated, the bit adapter (18) is engaged with the rotating shaft and rotates synchronously.

2. The quick-change mechanism according to claim 1, wherein: A docking mechanism is further arranged at the connection between the quick-change female head (1) and the quick-change male head (2), which moves in a direction perpendicular to the side walls of the quick-change male and female heads and is used to controllably restrict the axial movement of the quick-change male and female heads.

3. The quick-change mechanism according to claim 2, characterized in that: The docking mechanism comprises a spring plunger, the structure of which includes a pin and a spring sleeved outside the pin, the pin is fixed in the quick-change female head (1) through the spring, and jacks are arranged at the corresponding positions of the quick-change female head (1) and the quick-change male head (2).

4. A quick-change mechanism according to any one of claims 1-3, characterized in that: A bearing is arranged in the channel of the quick-change female head (1), and the width of any side of the limiting structure is greater than the inner diameter of the bearing.

5. The quick-change mechanism according to claim 4, characterized in that: The limiting structure is integrally formed with the rotating shaft or fixedly sleeved on the rotating shaft.

6. The quick-change mechanism according to claim 5, characterized in that: The quick-change female head (1) includes a quick-change female head one (16) directly used for connecting the bit (12), and when the quick-change female head (1) is the quick-change female head one (16), the rotating shaft is the bit (12); and a quick-change female head two (122) for docking with a fastener, and when the quick-change female head (1) is the quick-change female head two (122), the rotating shaft is the sleeve (123).

7. The quick-change mechanism according to claim 6, wherein: The quick-change female head one (16) further includes: A cylinder barrel (13) which is threadedly mated with the quick-change female head one (16) and has a channel in the cylinder barrel (13) for the bit (12) to pass through conveniently; A screw suction tube (11) which sleeves the bit (12) to adsorb screws and is connected between the cylinder barrel (13) and the quick-change female head one (16) at one end; a spacer ring (14) which is located in the cylinder barrel (13); a compression spring (15) which is installed between the spacer ring (14) and the quick-change head to provide stable elasticity.

8. A tightening device, characterized in that: It includes the quick-change mechanism according to any one of claims 6 and 7, and its structure further includes: A tightening tool (3) which is connected to the quick-change male head (2) and provides a rotational driving force for the bit adapter (18).

9. The tightening device according to claim 8, characterized in that: An air vent joint (17) for air intake is arranged on the quick-change male head (2).

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