CN205764856U - An automatic assembly device for screw and nut - Google Patents

Abstract

The utility model discloses an automatic assembly device of screw rod and nut, include: a base frame; the locking device comprises a base frame, a first lifting platform, a locking rod and a second lifting platform, wherein the base frame is provided with a first driving device and a second driving device; a second lifting platform which is arranged on the base frame and can move up and down by being pushed by a third driving device; the rotary drum is arranged on the second lifting platform and driven by a fourth driving device to rotate, a first through hole is formed in the rotary drum, the first through hole is longitudinally aligned with the locking rod, a positioning groove is formed in the bottom of the rotary drum, and the nut can be adsorbed in the positioning groove; and a nut feeding mechanism and a screw rod feeding mechanism. The utility model discloses can realize the automatic assembly of screw rod and nut, can effectively improve production efficiency, reduce workman's intensity of labour, can effectively guarantee product quality.

Description

An automatic assembly device for screw and nut

technical field

The utility model relates to an assembly device for electronic products.

Background technique

Due to the complex external shape of electronic products and the relatively fine assembly process, especially those involving auto-focus type electronic products, the assembly of electronic products is usually carried out manually at present, especially the installation of screws and nuts on electronic products requires workers Screw the screw on the nut first, then screw the screw on the electronic product, and finally lock the nut. The whole assembly process takes a long time, has many steps, labor intensity is high, production efficiency is low, and it is difficult to Ensure that the tightening force of each screw and nut can meet the predetermined requirements, which will easily affect the product quality.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide an automatic assembly device for screws and nuts that can automatically assemble screws and nuts to products, effectively improve production efficiency, ensure product quality, and reduce labor intensity of workers.

The technical scheme that the utility model adopts for solving its technical problem is:

An automatic assembly device for screws and nuts, comprising:

a pedestal;

a first lifting platform, longitudinally slidably arranged on the base frame and pushed by a first driving device to move up and down,

A longitudinal locking rod, which is rotatably arranged on the first lifting platform and driven by a second driving device to rotate around its longitudinal axis, has a screwdriver head for tightening the screw at the bottom of the locking rod;

A second lifting platform is vertically slidably arranged on the base frame and can be moved up and down by being pushed by a third driving device, and the second lifting platform is located below the first lifting platform;

A longitudinal drum, which is rotatably arranged on the second lifting platform and driven by a fourth driving device to rotate around its longitudinal central axis, is provided with a screw rod and the locking rod A longitudinal first through hole passes through, the first through hole is longitudinally aligned with the locking rod, and a positioning groove matching the nut is provided on the bottom of the drum, the positioning groove is aligned with the first through hole and communicated with the first through hole, the nut can be adsorbed in the positioning groove;

A nut feeding mechanism, arranged on the base frame, used to transport the nuts to the bottom of the positioning groove or into the positioning groove;

A screw feeding mechanism is arranged on the base frame or the second lifting platform, and is used to transport the screw into the first through hole.

Preferably, the rotating drum is magnetic so as to attract the nuts in the positioning grooves.

Preferably, the screw feeding mechanism includes a feeding block movably arranged on the second lifting platform, the feeding block is provided with at least one longitudinal second through hole, and the second lifting platform is provided with a longitudinal The third through hole and at least one longitudinal feeding hole, the described feeding hole is located above the feeding block, the first through hole is located below the feeding block, the third through hole, the first through hole and the The three of a second through hole are longitudinally aligned and communicated, and the described feeding block is driven by a fifth driving device to move or rotate to make the second through hole aligned and communicated with the feeding hole; the second The through hole, the third through hole and the feeding hole can all be passed by the screw, and the length of the second through hole is greater than or equal to the length of the screw.

Preferably, the number of the feeding holes is two and are respectively located on both sides of the third through hole, and the distance between each feeding hole and the third through hole is equal, and the number of the second through holes is two , and the distance between the two second through holes is equal to the distance between the feeding hole and the third through hole; when any second through hole is aligned with the third through hole, the other second through hole is aligned with the third through hole One of the two feeding holes is aligned.

Preferably, the second lifting platform is provided with a transverse chute matching the feeding block, and the feeding block is slidably arranged in the chute.

Preferably, the nut feeding mechanism includes a slideway and a mobile platform arranged on the base frame, the slideway is used for conveying and storing nuts, and the mobile platform is provided with a The nuts are longitudinally aligned and can be clamped on a pick-up rod in the inner ring of the nut. The pick-up rod is driven by a sixth driving device and can move longitudinally relative to the mobile platform. The frame is moved laterally to make the retrieving rod vertically aligned with the positioning groove.

Preferably, an elastic clamp for clamping the nut is provided at the end of the slideway, and when the mobile table moves laterally, the fetching rod can drive the nut to expand the elastic clamp and move out from the elastic clamp.

Preferably, a connecting platform is longitudinally slidably arranged on the first lifting platform, and the connecting platform is elastically connected to the first lifting platform, and the locking rod is rotatably arranged on the connecting platform.

Preferably, the first lifting platform is rotatably provided with a longitudinal first transmission rod, and the first transmission rod is connected to the locking rod for synchronous rotation; the base frame is rotatably provided with a first The transmission part, the first transmission rod is connected with the first transmission part to rotate synchronously and the first transmission rod can move up and down relative to the first transmission part, and the second drive device is used to drive the first transmission part to rotate.

Preferably, the second lifting platform is rotatably provided with a second transmission member, and a second transmission rod is drivingly connected with the second transmission member so as to rotate synchronously and move up and down relative to the second rotation member. The four driving devices are used to drive the second transmission rod to rotate around its longitudinal center axis, and the rotating drum is transmission-connected with the second transmission member so as to be able to rotate synchronously.

The beneficial effects of the utility model are: in the utility model, the nut feeding mechanism can transport the nuts to the bottom of the positioning groove or in the positioning groove, and the third driving device can push the second lifting platform to move down so that the rotating cylinder can press the nuts Close on the product, the screw feeding mechanism can transport the screw to the first through hole, then the first driving device can push the first lifting platform down to make the locking rod press the screw, and the second driving device can drive the locking The rod rotates to tighten the screw on the product, and then the fourth driving device can drive the drum to rotate to tighten the nut, so that the automatic assembly of the screw and the nut can be realized, which can effectively improve production efficiency, reduce labor intensity of workers, and is easy to adjust And control the tightening force of the screw and nut, which can effectively guarantee the product quality.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the overall structural diagram of the utility model;

Fig. 2 is a partial enlarged view of part A in Fig. 1;

Fig. 3 is a sectional view of the utility model;

Fig. 4 is a partially enlarged view of part B in Fig. 3;

Fig. 5 is a partially enlarged view of part C in Fig. 3;

Fig. 6 is a partially enlarged view of part D in Fig. 3;

Fig. 7 is an exploded view of the nut feeding mechanism in the present invention.

detailed description

Referring to Fig. 1 to Fig. 7, a kind of automatic assembly device of screw rod and nut comprises: a base frame 10; Moving up and down, a longitudinal locking rod 30 is rotatably arranged on the first lifting platform 20 and driven by a second driving device 31 to rotate around its longitudinal axis. The bottom of the locking rod 30 has a The screwdriver head 32 of the screw rod; a second lifting platform 40, which is vertically slidably arranged on the base frame 10 and can be moved up and down by a third driving device 41, and the second lifting platform 40 is located below the first lifting platform 20; A vertical rotating drum 50 is rotatably arranged on the second lifting platform 40 and is driven by a fourth driving device 51 to rotate around its longitudinal axis. The first through hole 52 in the longitudinal direction is aligned longitudinally with the locking rod 30. The bottom of the drum 50 is provided with a positioning groove 53 matching the shape of the nut. The positioning groove 53 is aligned with the first The through hole 52 is aligned and communicated with the first through hole 52, and the nut can be adsorbed in the positioning groove 53; a nut feeding mechanism is arranged on the base frame 10, and is used to transport the nut to the bottom of the positioning groove 53 or the positioning groove Inside 53; a screw feeding mechanism, which is arranged on the base frame 10 or the second lifting platform 40, and is used to transport the screw into the first through hole 52. In the utility model, the nut feeding mechanism can deliver the nuts to the bottom of the positioning groove 53 or in the positioning groove 53, and the third driving device 41 can push the second lifting platform 40 to move down so that the rotating drum 50 can press the nuts on the product. Above, the screw feeding mechanism can transport the screw into the first through hole 52, and then the first driving device 21 can push the first lifting platform 20 to move down to make the locking rod 30 compress the screw, and the second driving device 31 can drive The locking rod 30 rotates to tighten the screw on the product, and then the fourth driving device 51 can drive the rotating drum 50 to rotate to tighten the nut, thereby realizing the automatic assembly of the screw and the nut, which can effectively improve production efficiency and reduce the labor of workers. Strength, and easy to adjust and control the tightening strength of the screw and nut, which can effectively guarantee the product quality.

In this embodiment, the rotating drum 50 is magnetic, so that the nuts can be adsorbed in the positioning groove 53. Of course, in practical applications, the rotating drum 50 can also adopt vacuum adsorption, viscous adsorption, etc. to adsorb the nuts in the positioning groove 53. . The bottom of the base frame 10 is also equipped with a compacting cylinder 11 for compacting the product so as to assemble the screw rod and the nut. The drum 50 is elastically connected to the second lifting platform 40 through a second spring 82, which can prevent the drum 50 from being damaged due to excessive pressure and ensure product quality.

Referring to Fig. 1 to Fig. 5, the screw feeding mechanism includes a feeding block 71 movably arranged on the second lifting platform 40, and the feeding block 71 is provided with at least one longitudinal second through hole 711, and the second lifting platform 40 is provided with a longitudinal third through hole 42 and at least one longitudinal feeding hole 43, the feeding hole 43 is located above the feeding block 71, the first through hole 52 is located below the feeding block 71, and the third through hole 42. The first through hole 52 and a second through hole 711 are longitudinally aligned and communicated. The second through hole 711 is located in the third through hole 711. The feeding block 71 is driven by a fifth driving device 72 to move Or rotate to make the second through hole 711 aligned and communicated with the feeding hole 43; the second through hole 711, the third through hole 42 and the feeding hole 43 are all available for the screw to pass through, and the length of the second through hole 711 greater than or equal to the length of the screw. The feeding hole 43 can be connected with an external screw feeding device or screw feeding equipment. After the screw is conveyed into the feeding hole 43, the fifth driving device 72 can push the feeding block 71 to move to make the second through hole 711 and the upper hole 711 connected. The feed holes 43 are aligned and communicated, and the screw then falls into the second through hole 711, and then the fifth driving device 72 pushes the feeding block 71 to move back to make the second through hole 711 and the third through hole 42 and the first through hole 52, the screw rod can fall into the first through hole 52, and at the same time, the first through hole 52, the second through hole 711 and the third through hole 42 also form a passage for the locking rod 30 to pass through for tightening operation, The movement of the locking rod 30 will not be hindered, the structure is simple and ingenious, and it is easy to process and assemble. In this embodiment, the number of feeding holes 43 is two and are respectively located on both sides of the third through hole 42, and the distance between each feeding hole 43 and the third through hole 42 is equal, the second through hole 711 The number is two, and the spacing between the two second through holes 711 is equal to the spacing between the feeding hole 43 and the third through hole 42; when any second through hole 711 is aligned with the third through hole 42, another A second through hole 711 is aligned with one of the two feeding holes 43, and the two feeding holes 43 can continue to alternately feed materials, and when the second through hole 711 is aligned with the third through hole 42 in one of them, the locking lever 30. When performing locking processing, another second through hole 711 can be aligned with a feeding hole 43 at the same time to make the screw fall into the second through hole 711, so that after the screw rod in the previous second through hole 711 is assembled , the latter second through hole 711 can be immediately moved to a position aligned with the third through hole 42 to assemble the screw in the second through hole 711, which can effectively shorten the interval time of feeding and improve production efficiency, of course , in practical applications, the number of feeding holes 43 can also be one, three or other suitable numbers, and other suitable arrangements can be adopted, and it is not limited thereto. In addition, in this embodiment, the fifth driving device 72 is an air cylinder, and the fifth driving device 72 pushes the feeding block 71 to move laterally for feeding the screw. Of course, in practical applications, the feeding block 71 can also use a turntable Other structures, such as rotating the second through hole 711 to move back and forth between the feeding hole 43 and the third through hole 42 , are not limited thereto. The second lifting platform 40 is provided with a horizontal chute 44 matched with the feeding block 71, and the feeding block 71 is slidably arranged in the chute 44, which can guide the movement of the feeding block 71. The structure is simple and easy processing and assembly.

In this embodiment, the first driving device 21 is a motor, and the first driving device 21 drives the first lifting platform 20 to move up and down through a threaded rod transmission mechanism, which is beneficial to ensure the smoothness of the movement of the first lifting platform 20. The third drive The device 41 is an air cylinder, which can increase the speed at which the second lifting platform 40 moves up and down, thereby improving production efficiency.

Referring to Fig. 1, Fig. 3, Fig. 6 and Fig. 7, the nut feeding mechanism includes a slideway 61 and a mobile platform 62 arranged on the base frame 10, the slideway 61 is used for conveying and storing nuts, and the mobile platform 62 is provided with There is a pick-up rod 63 that is longitudinally aligned with the nut at the end of the slideway 61 and can be clamped in the inner ring of the nut. The pick-up rod 63 is driven by a sixth driving device 64 and can move longitudinally relative to the mobile platform 62. The mobile platform 62 is pushed by a seventh driving device 65 and can move laterally relative to the base frame 10 until the pick-up rod 63 is longitudinally aligned with the positioning groove 53 . The slideway 61 can be connected with an external vibrating screen and other nut feeding devices, and the mobile table 62 is pushed by the seventh driving device 65 to move to make the pick-up rod 63 longitudinally aligned with the positioning groove 53, and the rotating drum 50 can move down to displace the nuts. Adsorbed in the positioning groove 53, after that the retrieving rod 63 can be moved down to get out of the nut, and the moving table 62 is then moved back so that the retrieving rod 63 avoids the drum 50, so as to avoid hindering the movement of the drum 50, thus To realize automatic feeding of nuts, the structure is simple and reliable, and easy to process and use. Of course, in practical applications, the nut feeding mechanism can also adopt other common structures such as mechanical claws, and is not limited to this. In this embodiment, both the sixth driving device 64 and the seventh driving device 65 are air cylinders, which are simple in structure, easy to install, and relatively fast in action, which can improve production efficiency.

An elastic clamp 611 for clamping the nut is provided at the end of the slideway 61 . When the moving table 62 moves laterally, the pick-up rod 63 can drive the nut to stretch the elastic clamp 611 and move out from the elastic clamp 611 . On the one hand, the elastic clamp 611 can position the nut to facilitate the alignment and insertion of the retrieving rod 63 into the inner ring of the nut. On the other hand, after the previous nut is taken out, the elastic clamp 611 can be folded Tighten the next nut to prevent the following nut from slipping out from the slideway 61, so that the retrieving rod 63 can move the nut one by one. The structure is simple and reliable, and it is easy to process, assemble and use.

Referring to Fig. 1, Fig. 3 and Fig. 4, a connecting platform 22 is longitudinally slidably arranged on the first lifting platform 20, and the connecting platform 22 is elastically connected with the first lifting platform 20, and the locking rod 30 is rotatably arranged on the connecting platform 22. , which can prevent the locking rod 30 from damaging the product due to excessive pressure on the screw rod. In addition, in use, the first lifting platform 20 can also be pressed against the connecting platform 22 first, and then as the screw rod is tightened and moved down, the connection The elastic connection structure between the platform 22 and the first lifting platform 20 can drive the locking rod 30 to move down thereupon and maintain the pressure of the locking rod 30 on the screw rod, so that the first drive is not needed in the process of the locking rod 30 tightening the screw rod The device 21 continues to operate and is easy to control. In this embodiment, the connecting platform 22 and the first lifting platform 20 are elastically connected by the first spring 81. Of course, in practical applications, the connecting platform 22 and the first lifting platform 20 can also adopt other suitable The elastic connection structure is connected, while the connecting platform 22 is provided with a guide rod 221, and the first lifting platform 20 is correspondingly provided with a guide hole, and the guide rod 221 is slidably inserted in the guide hole to ensure the stability of the connecting platform 22 moving.

Referring to Fig. 1 to Fig. 4, there is a longitudinal first transmission rod 23 rotatably arranged on the first lifting platform 20, and the first transmission rod 23 is connected with the locking rod 30 to rotate synchronously; There is a first transmission member 12, the first transmission rod 23 is connected to the first transmission member 12 to rotate synchronously and the first transmission rod 23 can move up and down relative to the first transmission member 12, and the second drive device 31 is used to drive the first transmission member 12. A transmission member 12 rotates. In this embodiment, at least one plane portion is provided on the side wall of the first transmission rod 23, and a transmission hole is provided in the first transmission member 12. The cross-sectional shape of the transmission hole is the same as that of the first transmission rod 23. The cross-sectional shape of the first transmission rod 23 is slidably inserted in the transmission hole, so that the first transmission rod 23 can rotate synchronously with the first transmission member 12 and can move up and down relative to the first transmission member 12, thus locking When the rod 30 moves up and down to any position, the second driving device 31 can drive the locking rod 30 to rotate. The structure is simple and reliable, which facilitates the installation and assembly of the second driving device 31, effectively simplifies the structure, and facilitates production, assembly and use. In this embodiment, the second driving device 31 is a motor, which can drive the first transmission member 12 to rotate through a gear transmission mechanism, a belt transmission mechanism, and the like.

Referring to Fig. 1, Fig. 3 and Fig. 5, similarly, a second transmission member 45 is rotatably arranged on the second lifting platform 40, and a second transmission rod 46 is connected to the second transmission member 45 so as to rotate synchronously and relative to each other. The second rotating member moves up and down, and the fourth driving device 51 is used to drive the second transmission rod 46 to rotate around its longitudinal axis. When the second lifting platform 40 moves up and down to any position, the fourth driving device 51 can drive the drum 50 to rotate. In this embodiment, the fourth driving device 51 is a motor, which is connected with the second transmission rod 46, and the second The transmission member 45 drives the drum 50 to rotate through a gear transmission mechanism, and has a simple and reliable structure, and is easy to produce, assemble and use.

In addition, with reference to Fig. 1, Fig. 3 and Fig. 4, this assembly device also includes several sensors 13 for detecting the torsion force of the locking rod 30 and the drum 50, and these sensors 13 can control the actions of each driving device through a controller, so that Flexibly adjust the tightening force of the screw and nut to improve product quality.

The above descriptions are only the preferred implementation modes of the present utility model, as long as the technical solutions that achieve the purpose of the utility model by basically the same means all fall within the scope of protection of the utility model.

Claims (10)

1. a screw rod and the automatic assembling apparatus of nut, it is characterised in that including:

One pedestal (10)；

One first lifting platform (20), longitudinal sliding motion is arranged on pedestal (10) and above and is promoted by one first driving means (21) and can move up and down,

The check lock lever (30) of one longitudinal direction, is rotatably provided in the first lifting platform (20) and above and is driven by one second driving means (31) and can rotate around its longitudinal central axis, and the bottom of this check lock lever (30) has the driver bit (32) for tightening screw rod；

One second lifting platform (40), longitudinal sliding motion is arranged on pedestal (10) and above and is promoted by one the 3rd driving means (41) and can move up and down, and this second lifting platform (40) is positioned at the lower section of the first lifting platform (20)；

The rotating cylinder (50) of one longitudinal direction, it is rotatably provided in the second lifting platform (40) above and to be driven by a four-drive device (51) and can rotate around its longitudinal central axis, offer on described rotating cylinder (50) and be available for screw rod and first through hole (52) of a longitudinal direction that described check lock lever (30) passes, this first through hole (52) is longitudinally-aligned with check lock lever (30), the bottom of rotating cylinder (50) is provided with the locating slot (53) matched with nut, this locating slot (53) aligns with described first through hole (52) and connects with the first through hole (52), nut can be adsorbed in this locating slot (53)；

One nut feed mechanism, is arranged on pedestal (10), in the lower section that nut is transported to described locating slot (53) or locating slot (53)；

One screw feeding machine structure, is arranged on pedestal (10) or the second lifting platform (40), in by screw rod transmission to described the first through hole (52).

A kind of screw rod the most according to claim 1 and the automatic assembling apparatus of nut, it is characterised in that: described rotating cylinder (50) band is magnetic and can be adsorbed in described locating slot (53) by nut.

nullA kind of screw rod the most according to claim 1 and the automatic assembling apparatus of nut，It is characterized in that: described screw feeding machine structure includes the feeding block (71) being movably arranged on the second lifting platform (40)，Second through hole (711) of at least one longitudinal direction is offered on this feeding block (71)，The third through-hole (42) of a longitudinal direction and the feeding hole (43) of at least one longitudinal direction is offered on second lifting platform (40)，Described feeding hole (43) is positioned at the top of feeding block (71)，First through hole (52) is positioned at the lower section of feeding block (71)，Described third through-hole (42)、First through hole (52) is longitudinally-aligned with one second through hole (711) three and connects，Described feeding block (71) is driven by one the 5th driving means (72) and may move or turn to make this second through hole (711) align with feeding hole (43) and connect；Described the second through hole (711), third through-hole (42) and feeding hole (43) are available for screw rod and pass, and the length of the second through hole (711) is more than or equal to the length of screw rod.

A kind of screw rod the most according to claim 3 and the automatic assembling apparatus of nut, it is characterized in that: the quantity of described feeding hole (43) is two and lays respectively at the both sides of third through-hole (42), and spacing between each feeding hole (43) and third through-hole (42) is equal, the quantity of described second through hole (711) is two, and the spacing between two second through holes (711) is equal to the spacing between described feeding hole (43) and third through-hole (42)；When arbitrary second through hole (711) is alignd with third through-hole (42), another second through hole (711) aligns with the one in two feeding holes (43).

A kind of screw rod the most according to claim 3 and the automatic assembling apparatus of nut, it is characterized in that: offer the horizontal chute (44) matched with described feeding block (71) on described the second lifting platform (40), feeding block (71) is slidably arranged in this chute (44).

A kind of screw rod the most according to claim 1 and the automatic assembling apparatus of nut, it is characterized in that: described nut feed mechanism includes a slideway (61) and the mobile station (62) being arranged on pedestal (10), described slideway (61) is used for carrying and depositing nut, a feeding bar (63) that is longitudinally-aligned with the nut of slideway (61) end and that can be clamped in nut inner ring it is provided with in described mobile station (62), this feeding bar (63) is driven by one the 6th driving means (64) and can vertically move by relative movement platform (62), mobile station (62) is promoted by one the 7th driving means (65) and can relatively laterally move to make feeding bar (63) longitudinally-aligned with described locating slot (53) by pedestal (10).

A kind of screw rod the most according to claim 6 and the automatic assembling apparatus of nut, it is characterized in that: the end of described slideway (61) is provided with the spring chuck (611) for binding nut, when mobile station (62) transverse shifting, described feeding bar (63) can drive nut to strut described spring chuck (611) and remove from spring chuck (611).

A kind of screw rod the most according to claim 1 and the automatic assembling apparatus of nut, it is characterized in that: the upper longitudinal sliding motion of described the first lifting platform (20) is provided with a connected unit (22), this connected unit (22) is connected with the first lifting platform (20) elasticity, and described check lock lever (30) is rotatably provided in this connected unit (22).

A kind of screw rod the most according to claim 8 and the automatic assembling apparatus of nut, it is characterized in that: on described the first lifting platform (20), be rotatably provided with first drive link (23) of a longitudinal direction, this first drive link (23) and check lock lever (30) be in transmission connection and can synchronous axial system；One first driving member (12) rotatably it is provided with on described pedestal (10), first drive link (23) is in transmission connection with this first driving member (12) and can synchronous axial system and the first drive link (23) can relative first driving member (12) move up and down, and described the second driving means (31) rotates for driving the first driving member (12).

A kind of screw rod the most according to claim 1 and the automatic assembling apparatus of nut, it is characterized in that: on described the second lifting platform (40), be rotatably provided with one second driving member (45), one second drive link (46) is in transmission connection with the second driving member (45) and can synchronous axial system can moving up and down by relative second tumbler, described four-drive device (51) is used for driving this second drive link (46) to make it rotate around its longitudinal central axis, described rotating cylinder (50) and the second driving member (45) be in transmission connection and can synchronous axial system.