Screw tightening device

Abstract

The utility model provides a screw tightening device which comprises a screw tightening gun which comprises a gun body, a tightening component with a power output axis and a head component connected with the gun body, and the head component is provided with a tightening channel; the conveying part is provided with a conveying channel used for conveying screws, the conveying part is arranged on the gun body in a swinging mode, the conveying part is provided with a first position where the conveying channel communicates with the tightening channel and a second position where the conveying channel and the tightening channel are staggered, and the tightening component can reciprocate relative to the gun body along the power output axis; when the tightening component stretches out of the tightening channel, the conveying part is located at the first position, and when the tightening component stretches into the tightening channel, the conveying part is located at the second position. According to the technical scheme, the problem that in the prior art, a screw tightening gun is prone to screw clamping stagnation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw assembly, in particular to a screw tightening device. Background Art

[0002] In the prior art, the operation of tightening screws is performed by using a screw tightening gun, which includes a nail feeder and a tightening gun head connected to the nail feeder. When the nail feeder feeds the screw to the tightening gun head, the screw is easily stuck at the position where the nail feeder is connected to the tightening gun head. Since the screw tightening gun is an integrated structure, if the screw is stuck, the screw tightening gun head needs to be disassembled and assembled to clear the screw. This, on the one hand, not only wastes a lot of manpower costs, but also delays production, resulting in reduced production efficiency; on the other hand, for a production line that requires multiple screw tightening guns, it is necessary to manually confirm whether each screw tightening gun has a stuck screw, which also leads to reduced production efficiency; on the other hand, the mechanical mechanism of the tightening gun head is often disassembled and reinstalled, and the mechanical mechanism is prone to deformation. In this way, it is necessary to regularly replace structural parts, which increases production costs. Utility Model Content

[0003] In view of this, the utility model provides a screw tightening device to solve the problem that the screw tightening gun in the prior art is prone to screw jamming.

[0004] The utility model provides a screw tightening device, comprising: a screw tightening gun, comprising a gun body, a tightening component with a power output axis and a head component connected to the gun body, the head component having a tightening channel; a conveying part, having a conveying channel for conveying screws, the conveying part being swingably arranged on the gun body, the conveying part having a first position where the conveying channel is connected to the tightening channel and a second position where the conveying channel is staggered from the tightening channel, the tightening component being reciprocatingly movable relative to the gun body along the power output axis so as to be able to extend into and extend out of the tightening channel, when the tightening component extends out of the tightening channel, the conveying part is in the first position, and when the tightening component extends into the tightening channel, the conveying part is in the second position.

[0005] In this way, there is no need to waste a lot of manpower to disassemble and assemble the screw tightening device, which not only avoids reducing production efficiency, but also avoids the problem of increased production costs due to regular replacement of structural parts. There is no need for manual frequent confirmation of whether there is a screw stuck in the screw tightening device, thereby improving production efficiency.

[0006] In a preferred embodiment, the conveying part is provided with an abutment surface, which is inclined relative to the power output axis. Along the power output axis, from the gun body to the head component, the angle between the abutment surface and the power output axis gradually decreases, and the tightening component can act on the abutment surface to enable the conveying part to switch between the first position and the second position.

[0007] In this way, it can be ensured that no new screws will enter the tightening channel through the conveying channel when the tightening member is tightening, thereby preventing the screws from being stuck in the screw tightening device.

[0008] In a preferred embodiment, the screw tightening device also includes a mounting bracket connected to the gun body, and the conveying part includes: a conveying pipe, which is inclined relative to the power output axis, the first end of the conveying pipe is rotatably connected to the mounting bracket, and the side of the conveying pipe facing the tightening member forms an abutment surface; an elastic member, which is connected between the mounting bracket and the conveying pipe, the elastic member and the abutment surface are respectively located on opposite sides of the conveying pipe, and the elastic member is used to make the second end of the conveying pipe be located on the power output axis.

[0009] In this way, the elastic member can keep the delivery tube in the first position so that the delivery channel and the tightening channel are connected, so that the screw can enter the tightening channel through the delivery channel. When the tightening component is working, the tightening component moves along the power output axis L from the gun body toward the direction close to the head component. The tightening component extends out of the gun body and acts on the abutment surface. By overcoming the elastic force of the elastic member, the delivery part is swung, so that the delivery part can be staggered with the head component, thereby making the delivery channel disconnected from the tightening channel, and then the tightening member extends into the tightening channel to tighten the screw. In this way, it can be ensured that when the tightening member is tightening, no new screws will enter the tightening channel through the delivery channel, thereby avoiding the screw from being stuck in the screw tightening device; after the tightening work is completed, the tightening member extends out of the tightening channel, and under the action of the elastic member, the delivery tube returns to the first position.

[0010] In a preferred embodiment, one end of the elastic member abuts against the mounting bracket, and the other end of the elastic member abuts against the delivery pipe, and the abutting position of the elastic member and the delivery pipe is located between the first end and the second end.

[0011] In this way, the elastic member can keep the delivery tube at the first position so that the delivery channel and the tightening channel are connected, thereby allowing the screw to enter the tightening channel through the delivery channel.

[0012] In a preferred embodiment, the head component has two tightening channels arranged at an angle, and the head component is rotatably arranged relative to the gun body so that the power output axis can pass through any one of the two tightening channels.

[0013] In this way, when a fault occurs inside one of the two tightening channels, the head member can be rotated to make the other tightening channel located on the power output axis L, so that the tightening member can extend into the tightening channel to tighten the screw, thereby avoiding production interruption.

[0014] In a preferred embodiment, the two tightening channels are divided into a first tightening channel and a second tightening channel, the inner diameter of the first tightening channel is larger than the inner diameter of the second tightening channel, and the inner diameter of the conveying channel is larger than or equal to the inner diameter of the first tightening channel.

[0015] In this way, the two tightening channels can respectively enter screws of different types, so that the type of screw can be changed according to the type of screw without manually removing the type-changing gun head, thereby improving production efficiency.

[0016] In a preferred embodiment, the inner diameter of the delivery channel is 25 mm to 30 mm.

[0017] In this way, the space of the conveying channel can be increased, thereby increasing the range of motion of the screws, and being compatible with both M5 and M6 screws, which can ensure that the screws will not flip over in the conveying channel, while also ensuring that the screws can be stably transmitted to the head component, avoiding the screws from being stuck at a certain position in the conveying channel, thereby reducing the situation of material jamming in the screw tightening device, thereby avoiding causing automation shutdown and affecting production efficiency.

[0018] In a preferred embodiment, the screw tightening device further comprises a rotating mechanism mounted on the gun body, wherein the rotating mechanism comprises an output shaft rotatably arranged relative to the gun body, and the output shaft is connected to the head component.

[0019] In this way, the rotation can be switched to suit different screw types without the need for frequent manual type changes.

[0020] In a preferred embodiment, the head component includes two tightening heads connected and arranged at an angle, and an end of each tightening head facing the conveying portion is provided with an inclined surface, and the inclined surface is configured to be engageable with the end of the conveying portion.

[0021] In this way, a tightening channel is formed inside each tightening head, and the conveying portion is in the first position, and the inclined surface engages with the end of the conveying portion, so that the screw can be prevented from leaking from between the conveying channel and the tightening channel during the process of being conveyed from the conveying channel to the tightening channel.

[0022] In a preferred embodiment, the gun body includes a bracket and a guide housing arranged on the bracket, and a moving channel is provided on the guide housing, and the tightening member can extend into the tightening channel through the moving channel.

[0023] In this way, the tightening member can enter the tightening channel more smoothly.

[0024] It can be seen from the above scheme that when the conveying part conveys the screw to the head component, the conveying part is in the first position, so that the screw can enter the tightening channel through the conveying channel. When the tightening component is working, the tightening component extends into the tightening channel, and the conveying part is in the second position, so that the conveying channel and the tightening channel are staggered (that is, the conveying channel and the tightening channel are not connected). In this way, it can be ensured that when the tightening component is tightening, no new screws will enter the tightening channel through the conveying channel, thereby avoiding the screws from being stuck in the screw tightening device. In this way, there is no need to waste a lot of manpower costs to disassemble and assemble the screw tightening device, which can not only avoid reducing production efficiency, but also avoid the problem of increased production costs due to regular replacement of structural parts. There is no need for manual frequent confirmation of whether there is a screw stuck in the screw tightening device, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of a screw tightening device according to an exemplary embodiment of the utility model;

[0027] Figure 2 for Figure 1 A schematic structural diagram of a screw tightening device from another angle;

[0028] Figure 3 for Figure 2 A partial enlarged view of the screw tightening device (the conveying part is in the first position);

[0029] Figure 4 for Figure 3 A front view of a screw tightening device;

[0030] Figure 5 for Figure 2 A partial enlarged view of the screw tightening device (the conveying part is in the second position).

[0031] In the above drawings, the reference numerals used are as follows:

[0032] 11. Gun body;

[0033] 111, bracket;

[0034] 112. Guide housing;

[0035] 12. Tighten the components;

[0036] 13. Head component;

[0037] 131. Tighten the head;

[0038] 14. Tighten the channel;

[0039] 20. Conveying unit;

[0040] 21. Install the bracket;

[0041] 22. abutment surface;

[0042] 23. Elastic parts;

[0043] 24. Rotating mechanism. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments.

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0047] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0048] like Figures 1 to 5 As shown, an embodiment of the utility model provides a screw tightening device. The screw tightening device includes a screw tightening gun and a conveying portion 20. The screw tightening gun includes a gun body 11, a tightening member 12 having a power output axis L, and a head member 13 connected to the gun body 11, the head member 13 having a tightening channel 14; the conveying portion 20 has a conveying channel for conveying screws, the conveying portion 20 is swingably arranged on the gun body 11, the conveying portion 20 has a first position where the conveying channel is connected to the tightening channel 14 and a second position where the conveying channel is staggered from the tightening channel 14, the tightening member 12 can reciprocate relative to the gun body 11 along the power output axis L so as to be able to extend into and out of the tightening channel 14, when the tightening member 12 extends out of the tightening channel 14, the conveying portion 20 is in the first position, and when the tightening member 12 extends into the tightening channel 14, the conveying portion 20 is in the second position.

[0049] In the above technical scheme, when the conveying part 20 conveys the screw to the head component 13, the conveying part 20 is in the first position, so that the screw can enter the tightening channel 14 through the conveying channel; when the tightening component 12 is working, the tightening component 12 extends into the tightening channel 14, and the conveying part 20 is in the second position, so that the conveying channel and the tightening channel 14 are staggered (that is, the conveying channel and the tightening channel 14 are not connected). In this way, it can be ensured that when the tightening component 12 is tightening, no new screws will enter the tightening channel 14 through the conveying channel, thereby avoiding the screws from being stuck in the screw tightening device. In this way, there is no need to waste a lot of manpower costs to disassemble and assemble the screw tightening device, which can not only avoid reducing production efficiency, but also avoid the problem of increased production costs due to regular replacement of structural parts. There is no need for manual frequent confirmation of whether there is a screw stuck in the screw tightening device, thereby improving production efficiency.

[0050] Furthermore, the above arrangement can also improve the stability of screw feeding.

[0051] like Figure 4 and Figure 5 As shown, in the embodiment of the utility model, the conveying part 20 is provided with an abutment surface 22, and the abutment surface 22 is inclined relative to the power output axis L. Along the power output axis L, from the gun body 11 to the head component 13, the angle between the abutment surface 22 and the power output axis L gradually decreases, and the tightening component 12 can act on the abutment surface 22 so that the conveying part 20 can switch between the first position and the second position.

[0052] Through the above arrangement, when the tightening member 12 moves from the gun body 11 toward the head member 13 along the power output axis L, the tightening member 12 can act on the abutment surface 22 to make the conveying part 20 swing, so that the conveying part 20 can be staggered with the head member 13, and the conveying channel and the tightening channel 14 are disconnected. In this way, it can be ensured that when the tightening member 12 is tightening, no new screws will enter the tightening channel 14 through the conveying channel, thereby avoiding the screws from getting stuck in the screw tightening device.

[0053] like Figure 4 and Figure 5 As shown, in the embodiment of the utility model, the screw tightening device also includes a mounting bracket 21 connected to the gun body 11, and the conveying part 20 includes: a conveying pipe, which is inclined relative to the power output axis L, and the first end of the conveying pipe is rotatably connected to the mounting bracket 21, and the side of the conveying pipe facing the tightening member 12 forms an abutment surface 22; an elastic member 23, which is connected between the mounting bracket 21 and the conveying pipe, and the elastic member 23 and the abutment surface 22 are respectively located on opposite sides of the conveying pipe, and the elastic member 23 is used to make the second end of the conveying pipe be located on the power output axis L.

[0054] Through the above arrangement, the elastic member 23 can keep the conveying tube in the first position so that the conveying channel and the tightening channel 14 are connected, so that the screw can enter the tightening channel 14 through the conveying channel. When the tightening member 12 is working, the tightening member 12 moves along the power output axis L from the gun body 11 toward the direction close to the head member 13, and the tightening member 12 extends out of the gun body and acts on the abutment surface 22. By overcoming the elastic force of the elastic member 23, the conveying part 20 is swung, so that the conveying part 20 can be staggered with the head member 13, thereby making the conveying channel and the tightening channel 14 disconnected, and then the tightening member 12 extends into the tightening channel to tighten the screw. In this way, it can be ensured that when the tightening member 12 is tightening, no new screw will enter the tightening channel 14 through the conveying channel, thereby avoiding the screw from being stuck in the screw tightening device; after the tightening work is completed, the tightening member 12 extends out of the tightening channel 14, and under the action of the elastic member 23, the conveying tube returns to the first position.

[0055] Preferably, the elastic member 23 may be a spring.

[0056] like Figure 4 and Figure 5 As shown, in the embodiment of the present invention, one end of the elastic member 23 abuts against the mounting bracket 21, and the other end of the elastic member 23 abuts against the delivery pipe, and the abutting position of the elastic member 23 and the delivery pipe is located between the first end and the second end.

[0057] Through the above arrangement, the elastic member 23 can keep the delivery tube in the first position, so that the delivery channel and the tightening channel 14 are connected, so that the screw can enter the tightening channel 14 through the delivery channel.

[0058] In one embodiment, the rotational connection position between the conveying pipe and the mounting bracket 21 can also be located between the first end and the second end bracket, the second end is located on the power output axis L, the elastic member is in a stretched state, the two ends of the elastic member are respectively connected to the conveying pipe and the mounting, and the elastic member is located between the rotational connection position and the first end.

[0059] like Figure 3 As shown, in the embodiment of the utility model, the head component 13 has two tightening channels 14 arranged at an angle, and the head component 13 is rotatably arranged relative to the gun body 11 so that the power output axis L can pass through any one of the two tightening channels 14.

[0060] With the above arrangement, when a fault occurs inside one of the two tightening channels 14, the head member 13 can be rotated so that the other tightening channel 14 is located on the power output axis L, so that the tightening member 12 can be inserted into the tightening channel 14 to tighten the screws, thereby avoiding production interruption.

[0061] Specifically, in the embodiment of the present invention, the two tightening channels 14 are divided into a first tightening channel and a second tightening channel, the inner diameter of the first tightening channel is larger than the inner diameter of the second tightening channel, and the inner diameter of the conveying channel is larger than or equal to the inner diameter of the first tightening channel.

[0062] Through the above arrangement, the two tightening channels 14 can respectively enter screws of different types, for example, M5 and M6 screws, so that the screw tightening devices can be used compatibly. In this way, when M5 and M6 screws are switched during the production process, the type of screw can be switched according to the type of screw without manually removing the type-changing gun head, thereby improving production efficiency.

[0063] Preferably, in the embodiment of the utility model, the inner diameter of the conveying channel is 25mm to 30mm. In this way, the space of the conveying channel can be increased, thereby increasing the range of motion of the screw, and being compatible with both M5 and M6 screws, which can ensure that the screw will not flip in the conveying channel, and at the same time ensure that the screw can be stably transmitted to the head component, avoiding the screw from being stuck at a certain position in the conveying channel, thereby reducing the situation of material jamming in the screw tightening device, so as to avoid causing the automation to stop and affect production efficiency.

[0064] like Figure 4 and Figure 5 As shown, in the embodiment of the utility model, the screw tightening device further comprises a rotating mechanism 24 mounted on the gun body 11 , the rotating mechanism 24 has an output shaft rotatably arranged relative to the gun body 11 , and the output shaft is connected to the head component 13 .

[0065] Through the above settings, rotation switching can be performed according to different screw types without frequent manual type changes.

[0066] Preferably, in the embodiment of the present invention, the rotating mechanism 24 is a rotating cylinder, which can perform stable 90° reciprocating rotation.

[0067] like Figure 3 As shown, in the embodiment of the utility model, the head component 13 includes two tightening heads 131 connected and arranged at an angle, and an end of each tightening head 131 facing the conveying part 20 is provided with an inclined surface, and the inclined surface is configured to be able to engage with the end of the conveying part 20. In this way, a tightening channel 14 is formed inside each tightening head 131, and the conveying part 20 is in the first position, and the inclined surface engages with the end of the conveying part 20, so that the screw can be prevented from leaking from between the conveying channel and the tightening channel during the process of being conveyed from the conveying channel to the tightening channel.

[0068] like Figure 2As shown, in the embodiment of the utility model, the gun body 11 includes a bracket 111 and a guide housing 112 disposed on the bracket 111. The guide housing 112 is provided with a moving channel, and the tightening member 12 can extend into the tightening channel 14 through the moving channel. In this way, the tightening member 12 can enter the tightening channel 14 more smoothly.

[0069] like Figure 2 As shown, in an embodiment of the present invention, a side of the guide housing 112 facing the conveying portion 20 is provided with an avoidance groove, the conveying portion 20 is in the first position, and part of the conveying portion 20 is located in the avoidance groove to avoid part of the conveying portion 20.

[0070] It should be noted that in the embodiment of the utility model, the conveying part 20 is a nail feeder, and the tightening member 12 is a screw gun rod. The specific structures of the nail feeder, the screw gun rod, the tightening head 131 and the gun body can adopt the existing technology and will not be repeated here.

[0071] It can be seen from the above scheme that according to the screw tightening device proposed by the utility model, when the conveying part conveys the screw to the head component, the conveying part is in the first position, so that the screw can enter the tightening channel through the conveying channel, and when the tightening component is working, the tightening component extends into the tightening channel, and the conveying part is in the second position, so that the conveying channel and the tightening channel are staggered (that is, the conveying channel and the tightening channel are not connected). In this way, it can be ensured that when the tightening component is tightening, no new screws will enter the tightening channel through the conveying channel, thereby avoiding the screws from being stuck in the screw tightening device. In this way, there is no need to waste a lot of manpower costs to disassemble and assemble the screw tightening device, which can not only avoid reducing production efficiency, but also avoid the problem of increased production costs due to regular replacement of structural parts. There is no need to manually frequently confirm whether there is a screw stuck in the screw tightening device, thereby improving production efficiency.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screw tightening device, characterized in that: include: A screw tightening gun, comprising a gun body (11), a tightening member (12) having a power output axis (L), and a head member (13) connected to the gun body (11), wherein the head member (13) has a tightening channel (14); The conveying part (20) has a conveying channel for conveying screws. The conveying part (20) is swingably arranged on the gun body (11). The conveying part (20) has a first position in which the conveying channel is connected to the tightening channel (14) and a second position in which the conveying channel and the tightening channel (14) are staggered. The tightening member (12) can reciprocate relative to the gun body (11) along the power output axis (L) so as to be able to extend into and extend out of the tightening channel (14). When the tightening member (12) extends out of the tightening channel (14), the conveying part (20) is in the first position, and when the tightening member (12) extends into the tightening channel (14), the conveying part (20) is in the second position.

2. The screw tightening device according to claim 1, characterized in that: The conveying portion (20) is provided with a contact surface (22), and the contact surface (22) is arranged obliquely relative to the power output axis (L). Along the power output axis (L), from the gun body (11) to the head component (13), the angle between the contact surface (22) and the power output axis (L) gradually decreases, and the tightening component (12) can act on the contact surface (22) to enable the conveying portion (20) to switch between the first position and the second position.

3. The screw tightening device according to claim 2, characterized in that: The screw tightening device further comprises a mounting bracket (21) connected to the gun body (11), and the conveying portion (20) comprises: a delivery pipe, arranged obliquely relative to the power output axis (L), a first end of the delivery pipe being rotatably connected to the mounting bracket (21), and a side of the delivery pipe facing the tightening member (12) forming the abutment surface (22); An elastic member (23) is connected between the mounting bracket (21) and the delivery pipe. The elastic member (23) and the abutment surface (22) are respectively located on opposite sides of the delivery pipe. The elastic member (23) is used to make the second end of the delivery pipe located on the power output axis (L).

4. The screw tightening device according to claim 3, characterized in that: One end of the elastic member (23) abuts against the mounting bracket (21), and the other end of the elastic member (23) abuts against the delivery pipe. The abutting position of the elastic member (23) and the delivery pipe is located between the first end and the second end.

5. The screw tightening device according to any one of claims 1 to 4, characterized in that: The head component (13) has two tightening channels (14) arranged at an angle, and the head component (13) is rotatably arranged relative to the gun body (11) so that the power output axis (L) can pass through any one of the two tightening channels (14).

6. The screw tightening device according to claim 5, characterized in that: The two tightening channels (14) are divided into a first tightening channel and a second tightening channel, the inner diameter of the first tightening channel is larger than the inner diameter of the second tightening channel, and the inner diameter of the conveying channel is larger than or equal to the inner diameter of the first tightening channel.

7. The screw tightening device according to claim 6, characterized in that: The inner diameter of the delivery channel is 25 mm to 30 mm.

8. The screw tightening device according to claim 5, characterized in that: The screw tightening device further comprises a rotating mechanism (24) mounted on the gun body (11), wherein the rotating mechanism (24) comprises an output shaft rotatably arranged relative to the gun body (11), and the output shaft is connected to the head component (13).

9. The screw tightening device according to claim 5, characterized in that: The head component (13) comprises two tightening heads (131) connected to each other and arranged at an angle, and an end of each tightening head (131) facing the conveying portion (20) is provided with an inclined surface, and the inclined surface is configured to be able to engage with the end of the conveying portion (20).

10. The screw tightening device according to any one of claims 1 to 4, characterized in that: The gun body (11) comprises a bracket (111) and a guide housing (112) arranged on the bracket (111); a moving channel is provided on the guide housing (112); and the tightening member (12) can extend into the tightening channel (14) through the moving channel.

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