CN115333294A - Miniature electric cylinder with side surface supporting and guiding functions - Google Patents

Abstract

The invention relates to the field of mechanical transmission, in particular to a miniature electric cylinder with side support and guidance. A miniature electric cylinder with side support and guide includes a motor connecting plate, a cylinder block and a servo motor. The lower part of the motor connecting plate is fixedly installed with a rear end cover, the upper part of the motor connecting plate is fixedly installed with a servo motor, and the synchronizing wheels are respectively installed on the screw rods. The shaft end of the screw nut and the motor end of the servo motor, the synchronous belt is sleeved on the synchronous wheel, the synchronous wheel cover is fixed to the motor connecting plate, the outer wall of the front of the screw nut is provided with a screw flange, and the front of the screw flange is provided with a bearing pressure Cover and angular contact bearing, the lock nut is installed on one end of the screw nut, the screw nut is threadedly connected with the inner thread of the piston through the external thread on the screw flange, and one end of the main rod is connected with the piston by threaded connection. The present invention has the advantages that the forward and backward movement of the line rail is consistent with the axial movement of the main rod piston, which further ensures that the piston cannot rotate inside the cylinder.

Description

A miniature electric cylinder with side support guide

technical field

The invention relates to the field of mechanical transmission, in particular to a miniature electric cylinder with side support and guide.

Background technique

At present, most of the miniature electric cylinders on the market are limited due to the diameter of the cylinder. Most of them are used in the design stage of the cylinder profile mold. Install the structure of the guide ring or guide post. During the actual installation process, the groove-shaped protrusions of the guide ring or guide post should be installed correspondingly to the pull slots inside the cylinder, so that the piston does not rotate when it reciprocates inside the cylinder. However, the defect of this design is that the guide ring or guide post is usually made of POM (polyoxymethylene) material, which will wear out after a period of time in actual use, and cannot fully guarantee normal use conditions.

Contents of the invention

In order to solve the technical problem that it cannot be used normally, the invention provides a miniature electric cylinder with side support and guide.

Technical scheme of the present invention is as follows:

A miniature electric cylinder with side support and guidance, including a motor connecting plate, a cylinder body and a servo motor, the rear end cover is fixedly installed on the lower part of the motor connecting plate, the servo motor is fixedly installed on the upper part of the motor connecting plate, and the synchronous wheels are respectively installed on the screw rod The shaft end of the nut screw and the motor end of the servo motor, the synchronous belt is inserted into the synchronous wheel, the synchronous wheel cover is fixed to the motor connection plate, the outer wall of the front part of the screw nut is provided with a screw flange, and the front of the screw flange is sequentially provided with a bearing pressure Cover and angular contact bearing, the lock nut is installed on one end of the screw nut, the screw nut is connected with the internal thread in the piston through the external thread on the screw flange, and the main rod is connected with the piston through a threaded connection, and the internal thread The joint is screwed to the other end of the main rod, and the inner wall of the cylinder is provided with a groove in the inner hole, the guide column is aligned with the side of the groove in the inner hole of the cylinder, and the front end cover and the rear end cover are installed on both sides of the cylinder body.

The inner ring of the angular contact bearing is provided with a screw washer.

The caliber on the left side of the piston is larger than that on the right side, and a recessed groove is arranged on the outer wall of the left side, and a guide post is arranged in the recessed groove, and the guide post is fixed on the piston with screws.

There is a recessed position on the left side of the upper mounting guide plate, a slide block is installed on the recessed position, a line rail is installed in the slide block, the front mounting plate is fixed on the internal thread joint, and the front mounting plate is fixedly connected with the upper mounting guide plate.

An oil-free bushing is arranged inside the front end cover.

Using the technical solution of the present invention, the structure is novel, the design is ingenious and simple, on the basis of retaining the internal cylinder groove and the guide column installed on the piston, wire gauges and sliders are installed outside the cylinder, and connected to the internal piston through the connecting piece Synchronization is formed. The existing electric cylinder only adopts the design of a single guide column or a uniformly distributed guide ring as described above. Although it can basically guarantee that the piston will not rotate when the cylinder body reciprocates axially, based on the material itself (mostly polyoxymethylene) Material) and actual working conditions (mostly used to push or pull tooling), it is impossible to fully guarantee that the function can still be realized during later use, especially after wear and tear, so it is combined with the use scene and installed after multi-directional use , attach a line rail to the outside of the conventional miniature electric cylinder and install it on the side of the electric cylinder, fix it to the front mounting plate through the wire gauge slider, and then connect it to the internal thread joint at the front end of the original electric cylinder with screws to realize the front and rear of the line rail The movement is consistent with the axial movement of the main rod piston, which further ensures that the piston cannot rotate inside the cylinder. At the same time, threaded holes can also be processed on the front mounting plate, and a variety of diversified tooling connection methods can be provided to achieve Adapt to a variety of feeding methods.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural representation of the explosion state of the present invention;

Fig. 3, 4 are the structural representations of piston of the present invention;

Fig. 5 is a schematic structural view of the cylinder body of the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

Example

As shown in Figures 1, 2, 3, 4, and 5, a miniature electric cylinder with side support and guidance includes a motor connecting plate 19, a cylinder body 1 and a servo motor 20, and the lower part of the motor connecting plate 19 is fixedly installed at the rear end Cover 15, servo motor 20 is fixedly installed on the upper part of motor connecting plate 19, and is locked and fixed with motor screws. Synchronous wheel 16 is respectively installed on the screw shaft end of screw nut 3 and the motor end of servo motor 20. Synchronous belt 17 is inserted into synchronous wheel 16 Above, the synchronous wheel cover 18 is fixed on the motor connection plate 19, the outer wall of the front part of the screw nut 3 is provided with a screw flange, and the front of the screw flange is provided with a bearing gland 14 and an angular contact bearing 9 in sequence, and the lock nut 10 is installed on On one end of the screw nut 3, the screw nut 3 is threadedly connected with the internal thread in the piston 7 through the external thread on the screw flange, one end of the main rod 2 is connected with the piston 7 through a threaded connection, and the internal thread joint 5 is screwed to the main rod 2. The other end is fixed with thread glue at the same time. The inner wall of the cylinder body 1 is provided with a groove in the inner hole. The guide column 21 is installed on the side of the groove in the inner hole of the cylinder body 1. Install the piston and other components into the inner side of the cylinder body. The front cover 4 and the rear end cover 15 are installed on both sides of the cylinder body 1, and are installed on the cylinder body 1 with screws.

The inner ring of the angular contact bearing 9 is provided with a screw washer 8 .

The diameter on the left side of the piston 7 is greater than the diameter on the right side, and the outer wall on the left side is provided with a recessed groove, and a guide post 21 is set in the recessed groove, and the guide post 21 is fixed on the piston 7 with screws.

There is a recessed position on the left side of the upper installation guide plate 12, and a slide block 13 is installed on the recessed position. The line rail 22 is installed in the slide block 13, and the line rail 22 and the slide block 13 are installed on the reserved side of the cylinder body. Tighten, the front mounting plate 11 is fixed on the internally threaded joint 5, the front mounting plate 11 is fixedly connected with the upper mounting guide plate 12, and the corresponding holes are adjusted to an accurate position, and then the screws are tightened and fixed. .

The front end cover 4 is provided with an oil-free bushing 6 .

During use, the angular contact bearing 9 can be effectively connected with the screw rod to ensure that when the screw rod moves, the screw rod can still not move back and forth, and the screw nut 3 can be effectively connected with the The piston 7, the piston 7 and the main rod 2, the main rod 2 and the internal thread joint 5 are connected together, and at the same time, the thread fastening glue is applied during installation to make the connection tighter, and it is also for the movement of the rear line rail slider and the piston 7 Consistent movement plays a decisive role. Install the line rail slider to the side of the cylinder body, and then connect it with the internal threaded joint 5 through the front mounting plate 11. The front mounting plate 11 is an aluminum connecting piece. When the rod moves axially, it drives the slider back and forth to prevent the piston from rotating inside the cylinder. The motor connecting plate is installed to provide the installation position for the motor, and then the driving force of the motor is transmitted to the end of the screw through the synchronous wheel and the synchronous belt. The screw rod rotates synchronously while the motor moves to complete the power transmission.

This product is mostly used in photovoltaic industry equipment instead of cylinders, which can complete the horizontal movement of workpieces. At the same time, compared with traditional cylinders, it can rely on PLC control to move to any point within the stroke range to achieve different motion strokes. To meet the requirements of workpiece advancement, the line rail is installed on the side of the cylinder to ensure the stability of the installation. Because the connecting piece connects the main rod and the slider as a whole, when the main rod moves forward, the slider also moves forward, and the slider can only move forward and backward under the constraint of the wire rail, so the piston can only move left and right inside the cylinder. The front and rear linear motion can not rotate, and the installation holes can be reserved on the front and rear connecting parts, which ensures that different tooling can be attached to the electric cylinder in the subsequent actual production and use, and the electric cylinder can drive the tooling in different directions. , Complete a variety of motion feed methods.

It should be understood that the above descriptions are only preferred embodiments of the present invention, and are not sufficient to limit the technical solutions of the present invention. For those of ordinary skill in the art, within the spirit and principles of the present invention, they can Additions, substitutions, transformations or improvements are described, and all technical solutions after such additions, substitutions, transformations or improvements shall belong to the protection scope of the appended claims of the present invention.

Claims (5)

1. A miniature electric cylinder with side support and guidance, including a motor connection plate (19), a cylinder body (1) and a servo motor (20), characterized in that the lower part of the motor connection plate (19) is fixed and installed at the rear end The cover (15), the servo motor (20) is fixedly installed on the upper part of the motor connecting plate (19), the synchronous wheel (16) is respectively installed on the shaft end of the screw nut (3) and the motor end of the servo motor (20), and the synchronous belt ( 17) Put it on the synchronous wheel (16), fix the synchronous wheel cover (18) to the motor connection plate (19), and set the screw flange on the front outer wall of the screw nut (3), and set the bearing in front of the screw flange The gland (14), angular contact bearing (9), and the lock nut (10) are installed on one end of the screw nut (3), and the screw nut (3) connects with the piston (7) through the external thread on the screw flange. Internal thread thread connection, one end of the main rod (2) is connected with the piston (7) by thread connection, the internal thread joint (5) is screwed to the other end of the main rod (2), and the inner wall of the cylinder body (1) is provided with an inner hole pull The guide column (21) is aligned with the groove side of the inner hole of the cylinder body (1) for installation, and the front end cover (4) and the rear end cover (15) are installed on both sides of the cylinder body (1). 2. A miniature electric cylinder with side support and guide according to claim 1, characterized in that: the inner ring of the angular contact bearing (9) is provided with a screw washer (8). 3. A miniature electric cylinder with side support and guide according to claim 1, characterized in that: the diameter of the left side of the piston (7) is larger than the diameter of the right side, and a concave groove is provided outside the left outer wall, and in the concave groove Guide column (21) is set, and guide column (21) is fixed on the piston (7) with screw. 4. A miniature electric cylinder with side support and guide according to claim 1, characterized in that: there is a recessed position on the left side of the upper installation guide plate (12), and a slider (13) is installed on the recessed position, The line rail (22) is installed in the slide block (13), the front mounting plate (11) is fixed on the internal thread joint (5), and the front mounting plate (11) is fixedly connected with the upper mounting guide plate (12). 5. A miniature electric cylinder with side support and guide according to claim 1, characterized in that: the front end cover (4) is provided with an oil-free bushing (6).

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