Automatic screw turning equipment and automatic production line

Abstract

The utility model belongs to the technical field of automatic equipment, and discloses automatic screw turning equipment and an automatic production line. The automatic screw turning equipment comprises a fixing frame, a tightening mechanism, a second driving part and a displacement mechanism, the tightening mechanism comprises a first driving part and a tightening part, the first driving part is in transmission connection with the tightening part so as to drive the tightening part to rotate, a screwing hole and an adsorption hole which are communicated are formed in the tightening part, and the second driving part is in transmission connection with the second driving part. The screwing hole can be arranged on a to-be-tightened screw in a sleeving mode, and the adsorption hole can adsorb the to-be-tightened screw. The second driving piece is arranged on the fixing frame, is in transmission connection with the first driving piece and is used for driving the tightening mechanism to move in the vertical direction; the output end of the displacement mechanism is connected with the fixing frame so that the tightening mechanism and the second driving part can be driven to move in the horizontal direction through the fixing frame, and therefore the to-be-tightened part is driven to transfer the unqualified to-be-tightened screw from the workpiece into the recycling device.

Description

Technical Field

[0001] The utility model relates to the technical field of automation equipment, in particular to an automatic screw-tightening device and an automated production line. Background Art

[0002] In the process of mechanical production, screws are widely used, and different workpieces can be connected by tightening screws. In the prior art, an automated device is usually used to tighten screws. However, due to possible defects in workpieces or screws, sometimes the screws cannot be tightened. Currently, the existing automated devices cannot remove the screws that cannot be tightened, and usually, manual labor is required to transfer the screws from the workpieces to the recycling device, resulting in low production efficiency and high labor costs.

[0003] Therefore, there is an urgent need to propose an automatic screw-tightening device and an automated production line to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic screw-tightening device and an automated production line, which can remove the screws that cannot be tightened from the workpieces and transfer them to the recycling device.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] An automatic screw-tightening device includes:

[0007] A fixing frame;

[0008] A tightening mechanism, including a first driving member and a tightening member. The first driving member is in transmission connection with the tightening member to drive the tightening member to rotate. A screwing hole and an adsorption hole that are communicated with each other are arranged in the tightening member. The screwing hole can be sleeved on the screw to be tightened, and the adsorption hole can adsorb the screw to be tightened;

[0009] A second driving member, which is arranged on the fixing frame and is in transmission connection with the first driving member, and is used to drive the tightening mechanism to move in the vertical direction;

[0010] A displacement mechanism, whose output end is connected to the fixing frame to drive the tightening mechanism and the second driving member to move in the horizontal direction through the fixing frame.

[0011] Furthermore, the automatic screw-tightening device further includes a gas supply assembly, and the gas supply assembly includes a gas source and a gas path. One end of the adsorption hole far away from the screwing hole is communicated with the interface of the gas source through the gas path.

[0012] Furthermore, the tightening mechanism further includes a transmission assembly, and the first driving member drives the tightening member to rotate through the transmission assembly;

[0013] The air circuit is opened in the transmission component; and / or the air source is installed on the transmission component.

[0014] Furthermore, the tightening mechanism also includes a transmission assembly, which includes a mounting member, a transmission shaft and a first bearing. The mounting member is slidably arranged on the fixed frame along the vertical direction, and the two ends of the transmission shaft are respectively connected to the first driving member and the tightening member, and are rotatably connected to the mounting member through the first bearing.

[0015] Furthermore, a guide assembly is provided between the mounting member and the fixing frame, and the guide assembly includes a guide rail and a guide slider which slidably cooperate with each other, the guide rail extends in a vertical direction and is provided on the fixing frame, and the guide slider is provided on the mounting member.

[0016] Furthermore, a limiting structure is arranged on the fixing frame, and the limiting structure includes a first limiting structure and a second limiting structure, wherein the first limiting structure can interfere with the mounting member to limit the maximum displacement of the mounting member when the mounting member moves upward in the vertical direction; and the second limiting structure can interfere with the mounting member to limit the maximum displacement of the mounting member when the mounting member moves downward in the vertical direction.

[0017] Furthermore, a buffer is provided on at least one of the fixing frame and the mounting member, and the buffer is used to slow down the descending speed of the mounting member.

[0018] Furthermore, the mounting member is drivingly connected to an output end of the second driving member, and the first driving member is disposed on the mounting member.

[0019] Furthermore, there are a plurality of adsorption holes, and the plurality of adsorption holes are arranged around the outer periphery of the axis of the screw hole.

[0020] An automated production line comprises a feeding device, a recycling device and the automatic screw-tightening equipment in any of the above schemes, wherein the feeding device is used to transport a workpiece to a processing position of the automatic screw-tightening equipment, the tightening mechanism is used to screw qualified screws to be tightened onto the workpiece, and can transfer unqualified screws to be tightened to the recycling device.

[0021] Beneficial effects of the utility model:

[0022] The present utility model provides an automatic screw-tightening device and an automated production line, including a fixing frame, a tightening mechanism, a second driving member, and a displacement mechanism. The tightening mechanism includes a first driving member and a tightening member. The first driving member is in transmission connection with the tightening member to drive the tightening member to rotate. A screwing hole and an adsorption hole that are communicated with each other are arranged in the tightening member. The screwing hole can be sleeved on the screw to be tightened, and the adsorption hole can adsorb the screw to be tightened, so as to adsorb the unqualified screw to be tightened. The second driving member is arranged on the fixing frame and is in transmission connection with the first driving member for driving the tightening mechanism to move in the vertical direction, so as to drive the tightening member to approach or move away from the workpiece to be connected. The output end of the displacement mechanism is connected to the fixing frame to drive the tightening mechanism and the second driving member to move in the horizontal direction through the fixing frame, so as to drive the screw to be tightened to transfer the unqualified screw to be tightened from the workpiece to the recycling device. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the automatic screw-tightening device provided by the present utility model;

[0024] Figure 2 is a schematic structural diagram of the tightening member of the present utility model.

[0025] In the figure:

[0026] 100, screw to be tightened;

[0027] 1, fixing frame;

[0028] 2, tightening mechanism; 21, first driving member; 22, tightening member; 221, screwing hole; 222, adsorption hole; 23, transmission assembly; 231, mounting member; 232, transmission shaft; 24, guiding assembly; 241, guiding slide rail; 242, guiding slider;

[0029] 3, second driving member;

[0030] 4, limiting structure; 41, first limiting structure; 42, second limiting structure;

[0031] 5, buffer. Detailed Embodiments

[0032] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only some structures related to the present utility model are shown in the drawings, rather than all structures.

[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] As Figures 1 to 2 shown, this embodiment provides an automatic screw-tightening device, which includes a fixed frame 1, a tightening mechanism 2, a second driving member 3, and a displacement mechanism (not shown in the figure). The tightening mechanism 2 includes a first driving member 21 and a tightening member 22. The first driving member 21 is in transmission connection with the tightening member 22 to drive the tightening member 22 to rotate. A screwing hole 221 and an adsorption hole 222 that are connected and communicated are provided inside the tightening member 22. The screwing hole 221 can be sleeved on the screw 100 to be tightened, and the adsorption hole 222 can adsorb the screw 100 to be tightened, so as to adsorb the unqualified screw 100 to be tightened. The second driving member 3 is arranged on the fixed frame 1. The second driving member 3 is in transmission connection with the first driving member 21 and is used to drive the tightening mechanism 2 to move in the vertical direction, so as to drive the tightening member 22 to approach or move away from the workpiece to be connected. The output end of the displacement mechanism is connected to the fixed frame 1 to drive the tightening mechanism 2 and the second driving member 3 to move in the horizontal direction through the fixed frame 1, so as to drive the tightening member 22 to transfer the unqualified screw 100 to be tightened from the workpiece to the recycling device. In this embodiment, the first driving member 21 is a driving motor.

[0037] It should be noted that in the actual production process, due to machining defects in the workpieces or screws, sometimes the screws cannot be tightened onto the workpieces to be connected. In this embodiment, the screws that cannot be tightened onto the workpieces to be connected are defined as unqualified screws to be tightened 100, and the screws that can be tightened onto the workpieces to be connected are defined as qualified screws to be tightened 100.

[0038] Optionally, the number of the adsorption holes 222 is multiple, and the multiple adsorption holes 222 are arranged in a ring around the outer periphery of the axis of the screwing hole 221, so as to provide a more stable and balanced adsorption force for the screws to be tightened 100 and prevent the unqualified screws to be tightened 100 from falling during the transfer process.

[0039] The automatic screw tightening device further includes a gas supply assembly. The gas supply assembly includes a gas source and a gas path. One end of the adsorption hole 222 far from the screwing hole 221 is connected to the interface of the gas source through the gas path, so as to provide an adsorption force for the tightening member 22 to adsorb the screws to be tightened 100. When the number of the adsorption holes 222 is at least two, the number of the gas paths can be one, and at least two adsorption holes 222 are both communicated with the gas path; or when the number of the adsorption holes 222 is at least two, the number of the gas paths can be equal to the number of the adsorption holes 222, and they are communicated in one-to-one correspondence.

[0040] To facilitate the transmission connection between the second driving member 3 and the tightening mechanism 2, as Figure 1 shown, the tightening mechanism 2 further includes a transmission assembly 23. The transmission assembly 23 includes a mounting member 231, a transmission shaft 232 and a first bearing. The mounting member 231 is slidably arranged on the fixing frame 1 in the vertical direction, which is convenient for the second driving member 3 to drive the tightening mechanism 2 to move in the vertical direction. The two ends of the transmission shaft 232 are respectively connected to the first driving member 21 and the tightening member 22. The first driving member 21 drives the tightening member 22 to rotate through the transmission shaft 232. The transmission shaft 232 is rotatably connected to the mounting member 231 through the first bearing. When the first driving member 21 drives the transmission shaft 232 to rotate, the transmission shaft 232 can rotate in the first bearing. The first bearing provides stable support for the transmission shaft 232 and prevents the transmission shaft 232 from shaking during rotation.

[0041] To ensure the stability of the transmission shaft 232 when rotating relative to the connecting member, a second bearing is further arranged between the transmission shaft 232 and the fixing frame 1 to further provide support for the transmission shaft 232.

[0042] In this embodiment, the gas path of the gas supply assembly is arranged inside the transmission shaft 232, and the gas source is installed on the first bearing, so that the automatic screw tightening device of this embodiment has a compact and beautiful structure. In other embodiments, the gas path includes but is not limited to structures such as air pipes arranged outside the transmission shaft 232, and the gas source can also be installed on the first driving member 21, the mounting member 231 or the transmission shaft 232, which is not limited herein.

[0043] Specifically, a guide assembly 24 is also arranged between the mounting member 231 and the fixed frame 1. The guide assembly 24 includes a guide rail 241 and a guide slider 242 that slidably cooperate with each other. The guide rail 241 extends in the vertical direction and is arranged on the fixed frame 1. The guide slider 242 is arranged on the mounting member 231 to provide guidance for the movement of the mounting member 231 in the vertical direction to avoid deviation of its moving path, thereby ensuring the stability of the tightening mechanism 2 in the vertical direction.

[0044] Continue as Figure 1 As shown, the mounting member 231 is in driving connection with the output end of the second driving member 3, the first driving member 21 is arranged on the mounting member 231, and the second driving member 3 drives the tightening mechanism 2 to move in the vertical direction through the mounting member 231. Compared with the solution of directly connecting the output end of the second driving member 3 to the top of the first driving member 21, the above arrangement can reduce the height of the automatic tightening device in the vertical direction, so as to lower its center of gravity, thereby ensuring the stability of the entire device during operation.

[0045] The present embodiment does not limit the specific structure of the second driving member 3, and the second driving member 3 may be a driving device having a linear driving function, such as a pneumatic cylinder, an electric cylinder, or a linear motor.

[0046] Optionally, in the present embodiment, a limiting structure 4 is provided on the fixing frame 1, and the limiting structure 4 is used to limit the moving range of the mounting member 231 in the vertical direction. Specifically, the limiting structure 4 includes a first limiting structure 41 and a second limiting structure 42, and the first limiting structure 41 can conflict with the mounting member 231 to limit the maximum displacement of the mounting member 231 when it moves upward in the vertical direction; the second limiting structure 42 can conflict with the mounting member 231 to limit the maximum displacement of the mounting member 231 when it moves downward in the vertical direction. It should be noted that the present embodiment does not limit the specific structure of the first limiting structure 41 and the second limiting structure 42. In the prior art, as long as the first limiting structure 41 and the second limiting structure 42 that can limit the moving range of the tightening mechanism 2 in the vertical direction are realized, they are within the protection scope of the present embodiment.

[0047] In order to prevent the mounting member 231 from falling too fast, in this embodiment, a buffer 5 is provided on the fixing frame 1, and the buffer 5 is used to slow down the descending speed of the mounting member 231. Optionally, the buffer 5 includes but is not limited to a buffer cylinder or a hydraulic buffer. In this embodiment, a buffer cylinder and a hydraulic buffer are provided on the fixing frame 1, which can respectively abut against different parts of the mounting member 231 to slow down the descending speed of the tightening mechanism 2, thereby preventing the mounting member 231 from colliding with the second limiting structure 42 and causing damage. Of course, in other embodiments, the buffer 5 can also be provided on the mounting member 231, and the above-mentioned effects can also be achieved.

[0048] This embodiment also provides an automated production line, which includes a feeding device, a recycling device and the above-mentioned automatic screw-tightening device. The feeding device is used to transport the workpiece to the processing position of the automatic screw-tightening device. Then, the tightening mechanism 2 can screw the qualified screws to be tightened 100 onto the workpiece at the processing position, and can transfer the unqualified screws to be tightened 100 to the recycling device, realizing the automatic recycling of the unqualified screws to be tightened 100, which is beneficial to improving production efficiency and reducing labor costs.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An automatic screw tightening device, characterized in that: include: Fixed frame (1); The tightening mechanism (2) comprises a first driving member (21) and a tightening member (22), wherein the first driving member (21) is in driving connection with the tightening member (22) so as to drive the tightening member (22) to rotate, and the tightening member (22) is provided with a screw hole (221) and an adsorption hole (222) which are connected to each other, and the screw hole (221) can be sleeved on a screw (100) to be tightened, and the adsorption hole (222) can adsorb the screw (100) to be tightened; A second driving member (3), the second driving member (3) being arranged on the fixing frame (1), the second driving member (3) being in driving connection with the first driving member (21) and being used for driving the tightening mechanism (2) to move in a vertical direction; The displacement mechanism has an output end connected to the fixing frame (1) so as to drive the tightening mechanism (2) and the second driving member (3) to move in a horizontal direction through the fixing frame (1).

2. The automatic screw tightening device according to claim 1, characterized in that: The automatic screw-tightening device further comprises an air supply component, wherein the air supply component comprises an air source and an air circuit, and an end of the adsorption hole (222) away from the screwing hole (221) is connected to an interface of the air source through the air circuit.

3. The automatic screw tightening device according to claim 2, characterized in that: The tightening mechanism (2) further comprises a transmission assembly (23), and the first driving member (21) drives the tightening member (22) to rotate via the transmission assembly (23); The gas circuit is opened in the transmission component (23); and / or the gas source is installed on the transmission component (23).

4. The automatic screw tightening device according to claim 1, characterized in that: The tightening mechanism (2) further comprises a transmission assembly (23), the transmission assembly (23) comprising a mounting member (231), a transmission shaft (232) and a first bearing, the mounting member (231) being slidably arranged on the fixing frame (1) along a vertical direction, the two ends of the transmission shaft (232) being respectively connected to the first driving member (21) and the tightening member (22), and being rotatably connected to the mounting member (231) via the first bearing.

5. The automatic screw tightening device according to claim 4, characterized in that: A guide assembly (24) is also provided between the mounting member (231) and the fixed frame (1), and the guide assembly (24) comprises a guide rail (241) and a guide slider (242) which are slidably matched with each other, the guide rail (241) extending in a vertical direction and being provided on the fixed frame (1), and the guide slider (242) being provided on the mounting member (231).

6. The automatic screw tightening device according to claim 4, characterized in that: A limiting structure (4) is provided on the fixing frame (1), and the limiting structure (4) comprises a first limiting structure (41) and a second limiting structure (42), wherein the first limiting structure (41) can conflict with the mounting member (231) to limit the maximum displacement of the mounting member (231) when it moves upward in the vertical direction; and the second limiting structure (42) can conflict with the mounting member (231) to limit the maximum displacement of the mounting member (231) when it moves downward in the vertical direction.

7. The automatic screw-tightening device according to claim 4, characterized in that: A buffer (5) is provided on at least one of the fixing frame (1) and the mounting member (231), and the buffer (5) is used to slow down the descending speed of the mounting member (231).

8. The automatic screw-tightening device according to claim 4, characterized in that: The mounting member (231) is drivingly connected to the output end of the second driving member (3), and the first driving member (21) is arranged on the mounting member (231).

9. The automatic screw-tightening device according to any one of claims 1 to 8, characterized in that: There are a plurality of adsorption holes (222), and the plurality of adsorption holes (222) are arranged around the outer periphery of the axis of the screw hole (221).

10. An automated production line, characterized in that: It comprises a feeding device, a recovery device and an automatic screw-tightening device as claimed in any one of claims 1 to 9, wherein the feeding device is used to transport a workpiece to a processing position of the automatic screw-tightening device, and the tightening mechanism (2) is used to screw a qualified screw (100) to be tightened onto the workpiece, and can transfer an unqualified screw (100) to be tightened to the recovery device.

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