CN216029234U

CN216029234U - Device and system for automatically locking straight screw

Info

Publication number: CN216029234U
Application number: CN202122571058.XU
Authority: CN
Inventors: 张野; 王海荣; 黎田; 赵春波; 贾晓东; 于博; 陈兆芃
Original assignee: Beijing Siling Robot Technology Co ltd
Current assignee: Beijing Siling Robot Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-03-15
Anticipated expiration: 2031-10-25

Abstract

The present disclosure provides an automatic locking device of a word screw, it includes: a suction device formed with a central through hole and making the suction device suck a straight screw and be positioned at the suction device by supplying a negative pressure to the suction device; and the head of the tightening device is used for tightening the straight screw, wherein the head of the tightening device penetrates through the suction device to be in elastic contact with the straight screw. The present disclosure also provides a system for automatically locking a straight screw.

Description

Device and system for automatically locking straight screw

Technical Field

The disclosure relates to a device and a system for automatically locking a straight screw.

Background

With the development of automation technology, the workshop assembly process of a lot of equipment has all adopted automation equipment gradually to realize the assembly link, but under many circumstances, the locking work of screw still is accomplished by manual operation, especially to the locking work of a word screw, because when screwdriver and screw are not concentric, can produce eccentric force at the in-process of a word screw locking, need many times to adjust the tool and just can accomplish the locking of a word screw, lead to manual operation's efficiency very low, improved the assembly cost of equipment greatly.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present disclosure provides a device and a system for automatically locking a straight screw.

According to an aspect of the present disclosure, there is provided an apparatus for automatically locking a horizontal screw, including:

a suction device formed with a central through hole and making the suction device suck a straight screw and be positioned at the suction device by supplying a negative pressure to the suction device; and

the screw driver comprises a tightening device, wherein the head of the tightening device is used for tightening the straight screw, and the head of the tightening device penetrates through the suction device to be in elastic contact with the straight screw.

According to the device for automatically locking the straight screw, the lower end of the central through hole of the suction device is provided with a step part, so that the screw head of the straight screw is positioned on the suction device.

According to at least one embodiment of this disclosure, the device for automatically locking the in-line screw further includes:

the lower end of the connecting shaft is connected with the suction device, a suction hole is formed in the side wall of the connecting shaft, the upper end of the connecting shaft is closed, and negative pressure is provided for the suction device by providing negative pressure for the suction hole.

the connecting shaft is fixed on the adapter, so that when the adapter moves, the connecting shaft moves together with the adapter.

the adapter piece is arranged on the connecting piece in a sliding mode and can be close to or far away from the connecting piece.

According to at least one embodiment of this disclosure, the device for automatically locking a straight screw comprises:

a housing disposed at the connector; and

the driving device is arranged on the shell and drives the screwdriver head to rotate through the driving device, an elastic element is arranged between the screwdriver head and the driving device, so that the screwdriver head can be close to or far away from the driving device, and the screwdriver head is in elastic contact with the straight screw through the elastic element.

According to at least one embodiment of this disclosure, the device for automatically locking a straight screw further includes:

and the batch head is in transmission connection with the driving device through the quick-change structure so as to realize the replacement of the batch head through the quick-change structure.

a sleeve portion provided to the housing, wherein the sleeve portion is drivable by the driving means; and

a sliding portion slidably provided to the sleeve portion and capable of being driven by the sleeve portion; the quick-change structure is arranged on the sliding part, the batch head is mounted on the sliding part, and when the sliding part is close to or far away from the driving device, the batch head is close to or far away from the driving device.

According to at least one embodiment of this disclosure, the device for automatically locking the in-line screw, the quick-change structure includes:

a sliding sleeve provided outside the sliding portion, wherein an upper annular groove is formed in an upper half portion of an inner wall of the sliding sleeve; and

an elastic return portion for applying an upward force to the sliding sleeve;

an accommodating groove is formed in the batch head, an accommodating hole is formed in the lower end of the sliding part, and one end of the batch head is inserted into the accommodating hole; a through hole is formed in the side wall of the sliding part, and a ball is arranged in the through hole; when the ball contacts with the inner wall surface of the sliding sleeve, part of the ball is positioned in the accommodating groove of the batch head, and when the ball is positioned in the upper annular groove of the sliding sleeve, part of the ball is separated from the accommodating groove of the batch head.

According to another aspect of the present disclosure, there is provided a system for automatically locking a straight screw, which includes the above-mentioned apparatus for automatically locking a straight screw.

The system for automatically locking a straight screw according to at least one embodiment of the present disclosure further includes:

and the connecting piece of the device for automatically locking the straight screw is fixed at the tail end joint of the mechanical arm, so that the suction device is positioned at a fixed pose through the action of the mechanical arm.

the connecting piece of the device for automatically locking the straight screw is fixed on the feeding device, so that the suction device is close to or far away from the threaded hole for installing the straight screw through the feeding device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of an apparatus for automatically locking a straight screw according to an embodiment of the present disclosure.

Fig. 2 is a schematic sectional view of an apparatus for automatically locking a straight screw according to an embodiment of the present disclosure.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Fig. 4 is a schematic structural view of a tightening apparatus according to an embodiment of the present disclosure.

Fig. 5 is an enlarged schematic view of a portion B of fig. 4.

100 automatic locking device for straight screw

110 suction device

120 tightening device

121 outer casing

122 drive device

123 quick-change structure

1231 sliding sleeve

1232 elastic reset part

1233 ball bearing

1234 jump ring

124 sleeve part

125 sliding part

126 resilient element

127 batch head

128 output component

129 shaft sleeve

130 connecting shaft

140 seal

150 adaptor

160 connecting piece

170 guide shaft

180 linear bearing

190 fixed ring

200 air pipe connector

210 container.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "side wall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

Fig. 1 is a schematic structural view of an apparatus for automatically locking a straight screw according to an embodiment of the present disclosure. Fig. 2 is a schematic sectional view of an apparatus for automatically locking a straight screw according to an embodiment of the present disclosure.

As shown in fig. 1 and 2, an apparatus 100 for automatically locking a horizontal screw according to the present disclosure includes: a suction device 110 and a tightening device 120.

Wherein the suction device 110 is formed with a central through hole, and by providing a negative pressure to the suction device 110, the suction device 110 sucks a straight screw and is positioned at the suction device 110.

For example, a stepped portion is formed at a lower end of a central through hole of the suction device 110, and when a negative pressure is applied to the suction device 110, the suction device 110 sucks a screw out of a container 210 (screw holder) storing the in-line screw and positions a screw head of the in-line screw at the suction device 110, thereby conveniently aligning the in-line screw with the screw hole.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

In this disclosure, as shown in fig. 3, the device 100 for automatically locking a straight screw may further include: a connection shaft 130, a lower end of the connection shaft 130 being connected to the suction device 110, a suction hole being formed at a side wall of the connection shaft 130, an upper end of the connection shaft 130 being closed, and a negative pressure being supplied to the suction device 110 by supplying a negative pressure to the suction hole.

In the present disclosure, an air pipe joint 200 may be installed at the suction hole to input negative pressure to the connection shaft 130 through the air pipe joint 200.

For example, a sealing member 140 may be provided at an upper end of the connection shaft 130, wherein the sealing member 140 is formed with a through hole in which the batch head 127 is slidably provided to seal the upper end of the connection shaft 130 by the sealing member 140.

More preferably, the device 100 for automatically locking a straight screw may further include: the adapter 150, the connecting shaft 130 is fixed to the adapter 150, so that when the adapter 150 moves, the connecting shaft 130 moves together with the adapter 150.

In addition, the device 100 for automatically locking the in-line screw may further include: a connecting member 160, wherein the adaptor 150 is slidably disposed on the connecting member 160, and enables the adaptor 150 to approach or move away from the connecting member 160.

As an implementation form, the adaptor 150 may be provided with a guide shaft 170, and the connecting member 160 may be provided with a guide hole, and the guide shaft 170 may be slidably disposed in the guide hole to enable the adaptor 150 to approach or move away from each other by the guidance of the guide shaft 170.

In the present disclosure, the number of the guide shafts 170 may be two, and the two guide shafts 170 are arranged in parallel, so that the movement of the adaptor 150 can be more stable.

On the other hand, a bushing or a linear bearing 180 may be provided in the guide hole, thereby reducing a frictional force of the guide shaft 170 moving in the guide hole. On the other hand, the guide shaft 170 above the guide hole may be provided with a stopper to limit the lowest downward height of the adaptor 150, so as to prevent the adaptor 150 from being detached from the connector 160. In the present disclosure, the position limiting member may be a fixing ring 190, wherein the fixing ring 190 is fixed to the guide shaft 170.

A spring is disposed outside the guide shaft 170, wherein one end of the spring abuts against the adaptor 150, and the other end of the spring abuts against the connecting shaft 130, so that the spring applies a pushing force to the connecting shaft 130.

Fig. 4 is a schematic structural view of a tightening apparatus according to an embodiment of the present disclosure. Fig. 5 is an enlarged schematic view of a portion B of fig. 4. The structure of the tightening device 120 will be described in detail below with reference to the accompanying drawings.

As shown in fig. 4 and 5, the bit 127 of the tightening device 120 is used for tightening a straight screw, wherein the bit 127 of the tightening device 120 passes through the suction device 110 and is in elastic contact with the straight screw.

From this, the device of this automatic locking word screw can be applied to the end of arm, solves the problem that the locking in-process of word screw appears, replaces the manual work to realize the automatic locking of word screw.

That is, the bit 127 can be easily engaged with the screw head of the in-line screw by the elastic contact between the bit 127 and the in-line screw, thereby achieving the tightening of the in-line screw.

The tightening device 120 can complete the locking work of the screw according to the set torque, and meanwhile, the screwdriver head 127 can be flexibly replaced through the structure of the screwdriver head 127 which is quickly replaced, so that the locking requirements of different screws are met, and the system is flexible.

In the present disclosure, the tightening device 120 includes: a housing 121, wherein the housing 121 is disposed on the connecting member 160; the driving device 122 is arranged on the shell 121, so that the batch head 127 is driven to rotate by the driving device 122, wherein an elastic element 126 is arranged between the batch head 127 and the driving device 122, so that the batch head 127 can approach or separate from the driving device 122, and the elastic element 126 makes the batch head 127 elastically contact with a straight screw; preferably, the elastic member 126 may be a spring.

Preferably, the driving device 122 is fixed to the housing 121 and located inside the housing 121.

As an implementation form, the driving device 122 may be a motor, such as a speed reduction motor; of course, the driving device 122 may also be implemented by selecting other power elements, such as a pneumatic motor, and when the pneumatic motor is selected, a speed reducer may be added after the pneumatic motor to reduce the rotation speed of the pneumatic motor and increase the torque.

In the present disclosure, the driving device 122 is connected to the output member 128 through a coupling, and the output member 128 is in transmission connection with the sliding portion 125.

Moreover, one end of the elastic element 126 is disposed on the sliding portion 125, and the other end is disposed on the output member 128; so that the batch head can be in a floating state, the buffer effect is increased, and the hard contact is prevented from occurring, so that the equipment and the workpiece are prevented from being damaged.

In the present disclosure, the tightening device 120 further includes: the batch head 127 is in transmission connection with the driving device 122 through the quick-change structure 123, so that the batch head 127 can be replaced through the quick-change structure 123.

Preferably, the tightening device 120 further includes: a sleeve portion 124 and a slide portion 125.

The sleeve portion 124 is disposed on the housing 121, and the sleeve portion 124 can be driven by the driving device 122, for example, the sleeve portion 124 is connected with the output member 128 through a spline transmission.

The sliding portion 125 is slidably provided to the sleeve portion 124 and can be driven by the sleeve portion 124; the quick-change structure 123 is disposed on the sliding portion 125, and the batch head 127 is mounted on the sliding portion 125, so that when the sliding portion 125 approaches or moves away from the driving device 122, the batch head 127 approaches or moves away from the driving device 122.

In the present disclosure, a bushing 129 may be disposed between the sliding portion 125 and the sleeve portion 124, so that the friction force of the sliding portion 125 during sliding is reduced by the bushing 129.

The shaft sleeve 129 may be non-circular in shape, and power may be transmitted through the shaft sleeve 129.

An outer flange is formed at an upper end of the sliding portion 125, an inner flange is formed at a lower end of the sleeve portion 124, and the outer flange is positioned above the inner flange under normal conditions, and the sliding portion 125 is limited by the engagement of the inner flange and the outer flange, so that the sliding portion 125 is prevented from being separated from the sleeve portion 124.

As an implementation form, the quick-change structure 123 includes: a sliding sleeve 1231 provided outside the sliding portion 125, wherein an upper half portion of an inner wall of the sliding sleeve 1231 is formed with an upper annular groove; and an elastic returning part 1232, the elastic returning part 1232 for applying an upward force to the sliding sleeve 1231; wherein, an accommodating groove is formed on the batch head 127, an accommodating hole is formed at the lower end of the sliding part 125, and one end of the batch head 127 is inserted into the accommodating hole; a through hole is formed on the side wall of the sliding part 125, and a ball 1233 is arranged in the through hole; when the balls 1233 are in contact with the inner wall surface of the sliding sleeve 1231, portions of the balls 1233 are positioned in the receiving groove of the batch head 127, and when the balls 1233 are positioned in the upper annular groove of the sliding sleeve 1231, portions of the balls 1233 are separated from the receiving groove of the batch head 127.

When replacing the bit, slide sleeve 1231 downwards so that balls 1233 can be positioned in said upper annular groove; when the bit 127 is pulled downwards, the balls are moved to the upper annular groove of the sliding sleeve 1231, so that the bit 127 is detached; when a new batch head is replaced, the sliding sleeve 1231 is released, the sliding sleeve 1231 moves upwards under the action of the elastic reset portion 1232, and the ball part enters the accommodating groove of the batch head 127, so that the batch head 127 is locked.

Also, the elastic returning part 1232 can maintain the sliding sleeve 1231 in a state of locking the bit 127.

Preferably, a snap spring 1234 is disposed at a lower end of the sleeve portion 124, a step surface is formed on an inner wall surface of the sliding portion, the elastic reset portion 1232 may be a spring, one end of the spring abuts against the step surface of the sliding portion, and the other end of the spring abuts against the snap spring 1234, so that an elastic force is applied to the sliding portion 125 by the spring, and the sliding portion 125 is maintained at a position for locking the bit.

When the device for automatically locking the straight screw is used, the device can be arranged at the tail end of a mechanical arm, the tail end is controlled by the mechanical arm to reach the position above the screw at the screw cache position, the mechanical arm moves downwards to enable a screw head to enter the inside of a suction device, meanwhile, a vacuum generator works, and the inside of the suction device forms vacuum through an air pipe joint to suck the screw; after the suction device sucks the screw, the mechanical arm controls the tail end to be vertically lifted, and simultaneously, the electric screwdriver slowly rotates to enable the linear groove of the linear screw to be embedded into the linear head; the arm carries end and screw, reachs behind being locked screw hole top, carries out one section and feeds, feeds along the screw hole axis, screws up the device fast revolution simultaneously, accomplishes the screw thread screw in, and one section feeds and begins the two-stage process to feed after accomplishing the arm, screws up the device slow rotation this moment, and the arm lasts to push down, accomplishes the screw locking moment of torsion and confirms.

The inner wall of the suction device is limited to the axis of the screw in the whole screw locking process, so that the eccentric force generated in the locking process of the straight screw is balanced, and the screw is ensured to be locked smoothly; after locking, the mechanical arm moves upwards and retracts to complete the locking work of the straight screw.

According to another aspect of the present disclosure, a system for automatically locking a in-line screw is provided, which includes the above-mentioned apparatus 100 for automatically locking an in-line screw.

Preferably, the device 100 for automatically locking a straight screw further comprises: a robot arm (not shown) to which the link 160 of the auto-lock in-line screw device 100 is fixed at an end joint thereof so as to place the suction device 110 in a fixed attitude by the action of the robot arm.

Moreover, as another implementation form, the device 100 for automatically locking a straight screw may further include: a feeding device to which the coupling member 160 of the apparatus 100 for automatically locking a straight screw is fixed to allow the suction device 110 to approach or separate from the screw hole to which the straight screw is to be mounted, i.e., the feeding device may be provided as a linear driving device such as an air cylinder, a hydraulic cylinder, or a linear motor.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. An automatic locking device of word screw characterized by that includes:

2. The apparatus for automatically locking a straight screw according to claim 1, wherein a stepped portion is formed at a lower end of the central through hole of the suction means so that a head of the straight screw is positioned at the suction means.

3. The apparatus for automatically locking a horizontal screw according to claim 2, further comprising:

4. The apparatus for automatically locking a horizontal screw according to claim 3, further comprising:

5. The apparatus for automatically locking a horizontal screw according to claim 4, further comprising:

6. The apparatus for automatically locking a horizontal screw according to claim 5, wherein the tightening means comprises:

a housing disposed at the connector; and

7. The apparatus for automatically locking a horizontal screw according to claim 6, wherein the tightening means further comprises:

8. The apparatus for automatically locking a horizontal screw according to claim 7, wherein the tightening means further comprises:

a sliding portion slidably provided to the sleeve portion and capable of being driven by the sleeve portion; the quick-change structure is arranged on the sliding part, the batch head is mounted on the sliding part, and when the sliding part is close to or far away from the driving device, the batch head is close to or far away from the driving device;

and/or, the quick-change structure comprises:

an elastic return portion for applying an upward force to the sliding sleeve;

9. A system for automatically locking a in-line screw, comprising the apparatus for automatically locking an in-line screw of any one of claims 1 to 8.

10. The system for automatically locking a horizontal screw according to claim 9, further comprising:

the connecting piece of the device for automatically locking the straight screw is fixed at the tail end joint of the mechanical arm so as to enable the suction device to be positioned at a fixed pose through the action of the mechanical arm;

or, further comprising: