CN210456167U

CN210456167U - Automatic feeding mechanism

Info

Publication number: CN210456167U
Application number: CN201920987114.8U
Authority: CN
Inventors: 冯艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-05-05
Anticipated expiration: 2029-06-27

Abstract

The utility model provides an automatic feeding mechanism, including upper roll, bottom roll, the bottom roll is driven rotatoryly by first power device, the upper roll sets up and is driven the up-and-down motion by second power device in the bottom roll top to loosen or compress tightly the work piece that is located between upper roll and the bottom roll. The utility model is reasonably designed, a double-roller mode is adopted to replace a conveying belt or a conveying wheel mode, during feeding, the compressing cylinder drives the upper roller to compress the steel grating workpiece downwards together with the lower roller, the driving motor drives the lower roller to rotate through the speed reducer, the upper roller and the lower roller can be provided with anti-skid lines to increase friction force for skid prevention, and the steel grating workpiece realizes feeding under the rotation of the lower roller; the utility model discloses during to the steel grating work piece of different specifications, reduced the operation of changing anchor clamps or changing anchor clamps mounted position, it is more convenient to use, has improved production efficiency.

Description

Automatic feeding mechanism

Technical Field

The utility model relates to a steel grating equipment technical field especially relates to an automatic feeding mechanism.

Background

The steel grating is a steel product with square lattices in the middle, which is welded by a press welder or manually by using flat steel in a crossed arrangement according to a certain distance and cross rods, and is mainly used for manufacturing ditch cover plates, steel structure platform plates, step plates of steel ladders and the like.

With the continuous development of mechanical automation, the automatic production technology of the steel grating is also rapidly developed. Cutting is an indispensable technological process in the manufacturing process of the steel grating. The traditional mechanical cutting which adopts manual distance measurement obviously cannot meet the current requirements. At present, the most adopted mode in the industry is the automatic cutting mode of the incoming materials of the steel grating workpieces. Therefore, in the cutting process of the steel grating, the feeding mechanism is one of important devices, and a good feeding mechanism can ensure the cutting precision of the steel grating workpiece.

The existing feeding mechanism is mostly carried out in a mode that a conveying belt is matched with a clamp, namely, a steel grating plate moves along the conveying belt after being fixed by the clamp, and is clamped and fixed by a station after reaching the station for processing. The problem that exists in this kind of mode is mainly that, to the steel grating work piece of different specifications, the anchor clamps mounted position that uses is not very big, say, the steel grating that the width is different, and the position of counter jig is just different, needs the reinstallation anchor clamps. This makes the use inconvenient during the replacement of another batch of models, since the replacement of the jig is involved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide an automatic feeding mechanism, mainly solved feeding mechanism among the prior art and need change anchor clamps and make the more troublesome technical problem of operation.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an automatic feeding mechanism comprises an upper roller and a lower roller, wherein the lower roller is driven by a first power device to rotate, the upper roller is arranged above the lower roller and driven by a second power device to move up and down so as to loosen or press a workpiece between the upper roller and the lower roller.

Preferably, the first power device includes a driving motor and a speed reducer, and the driving motor is connected to the lower roller through the speed reducer to drive the lower roller to rotate.

As a preferable technical scheme, the second power device comprises a pressing cylinder, and the pressing cylinder is connected with the upper roller to drive the upper roller to move up and down.

As a preferred technical scheme, the pressing air cylinder is supported and arranged above the upper roller through a support.

Preferably, the upper roller is movably mounted on the bracket through a bearing seat.

According to the preferable technical scheme, the workpiece pressing device further comprises a pressing mechanism, the pressing mechanism comprises a connecting rod, an upper pressing strip and a lower pressing strip, the lower pressing strip and the upper pressing strip are both arranged on the connecting rod, the upper pressing strip is arranged above the lower pressing strip, the upper pressing strip is movably arranged on the connecting rod, and a pressing power device drives the upper pressing strip to move up and down on the connecting rod so as to loosen or press a workpiece between the upper pressing strip and the lower pressing strip.

As a preferred technical scheme, the pressing mechanism further comprises a positioning mechanism, which is used for ensuring that the workpiece is attached to the reference surface in all directions during pressing, wherein the positioning mechanism comprises a fixed positioning piece and a movable positioning piece, the fixed positioning piece and the movable positioning piece are arranged on two sides along the conveying direction of the workpiece, the fixed positioning piece is fixedly arranged on one side, and the movable positioning piece is arranged on the other side and clamps or releases the workpiece in two side directions through a positioning piece transmission device;

the fixed positioning piece is a fixed positioning wheel or a fixed positioning strip;

the movable positioning piece is a movable positioning wheel or a movable positioning strip.

Preferably, the two pressing mechanisms are installed at a distance along the workpiece feeding direction and respectively comprise a front pressing mechanism and a rear pressing mechanism.

The device comprises a front pressing mechanism, a rear pressing mechanism, a front pressing mechanism and a rear pressing mechanism, and is characterized by further comprising two stroke sensing devices for detecting the conveying distance of the workpiece, wherein the two stroke sensing devices are respectively arranged corresponding to the positions of the front pressing mechanism and the rear pressing mechanism.

As a preferable technical scheme, the stroke sensing device comprises a metering wheel and an encoder which are connected by a line,

the metering wheel is used for detecting the workpiece conveying distance and transmitting the workpiece conveying distance to the encoder;

and the encoder is used for receiving the workpiece conveying distance transmitted by the metering wheel.

Has the advantages that:

1. the utility model is reasonably designed, a double-roller mode is adopted to replace a conveying belt or a conveying wheel mode, during feeding, the compressing cylinder drives the upper roller to compress the steel grating workpiece downwards together with the lower roller, the driving motor drives the lower roller to rotate through the speed reducer, the upper roller and the lower roller can be provided with anti-skid lines to increase friction force for skid prevention, and the steel grating workpiece realizes feeding under the rotation of the lower roller; the utility model discloses during to the steel grating work piece of different specifications, reduced the operation of changing anchor clamps or changing anchor clamps mounted position, it is more convenient to use, has improved production efficiency.

2. The utility model is additionally provided with a pressing mechanism which is mainly used for fixing the steel grating workpiece fed to a designated station, the fixing mainly comprises two aspects, namely, the up-and-down fixing and the left-and-right fixing, wherein the steel grating workpiece is pressed through an upper pressing strip and a lower pressing strip to realize the up-and-down fixing, and the left-and-right fixing is realized by clamping two sides of the steel grating workpiece through a fixed positioning wheel and a movable positioning wheel; therefore, the steel grating workpiece reaching the shearing station can be stable, and shearing is facilitated.

3. The utility model discloses increased stroke sensing device, preferentially chooseed meter rice wheel and encoder for use: the steel grating workpiece is driven by the upper roller and the lower roller to move forwards, and the steel grating workpiece passes through the first group of metering wheels and the encoder and then passes through the second group of metering wheels and the encoder; the design of two sets of metering wheel encoders not only can verify the precision each other, can also guarantee to cut first and last and all detected the displacement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a three-dimensional structure diagram of an automatic feeding mechanism of the present invention;

fig. 2 is a front view of an automatic feeding mechanism of the present invention;

fig. 3 is a left side view of the automatic feeding mechanism of the present invention;

fig. 4 is a top view of an automatic feeding mechanism of the present invention;

in the figure, 1 is an upper roller, 2 is a lower roller, 3 is a driving motor, 4 is a speed reducer, 5 is a pressing cylinder, 6 is a support, 7 is a bearing seat, 8 is a workpiece, 9 is a pressing mechanism, 9-1 is a front pressing mechanism, 9-2 is a rear pressing mechanism, 901 is a connecting rod, 902 is an upper pressing strip, 903 is a lower pressing strip, 904 is a fixed positioning wheel, 905 is a movable positioning wheel, 906 is a pressing cylinder, 907 is a movable positioning wheel cylinder, 10 is a meter wheel, and 11 is an encoder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The invention will now be further described with reference to the accompanying drawings.

Example 1:

referring to fig. 1 and 2, the automatic feeding mechanism comprises an upper roller 1 and a lower roller 2, wherein the lower roller 2 is driven by a first power device to rotate, and the upper roller 1 is arranged above the lower roller 2 and driven by a second power device to move up and down so as to loosen or press a workpiece 8 between the upper roller 1 and the lower roller 2.

In the present embodiment, with continued reference to fig. 1 and 2, the first power device includes a driving motor 3 and a speed reducer 4, and the driving motor is connected to the lower roller 2 through the speed reducer 4 to drive the lower roller 2 to rotate.

In the present embodiment, with continued reference to fig. 1 and 2, the second power device includes a pressing cylinder 5, and the pressing cylinder 5 is connected to the upper roller 1 to move it up and down.

In the present embodiment, with continued reference to fig. 1 and 2, the hold-down cylinder 5 is supported above the upper drum 1 by a bracket 6.

In this embodiment, with continued reference to fig. 1 and 2, the upper roller 1 is movably mounted on the carriage 6 by means of a bearing block 7.

The utility model discloses during the implementation, should leave the space between upper roll 1 and the lower roll 2, the state between the two can refer to the state that figure 1 and figure 2 show, and the space of leaving should guarantee that work piece 8 can enter into between the space. The part of the workpiece 8 firstly enters the gap, and then the upper roller 1 is driven by the pressing cylinder 5 to move downwards to be matched with the lower roller 2 to press the workpiece 8; then the driving motor 3 runs, the lower roller 2 is driven to rotate through the speed reducer 4, and the workpiece 8 is driven to move forwards, so that feeding is realized. The outer side walls of the upper roller 1 and the lower roller 2 are preferably provided with anti-slip lines to enhance the friction force and avoid slipping.

Example 2:

in this embodiment, on the basis of embodiment 1, as shown in fig. 1 to 4, a pressing mechanism 9 is added, where the pressing mechanism 9 includes a connecting rod 901, an upper pressing strip 902, and a lower pressing strip 903, the lower pressing strip 903 and the upper pressing strip 902 are both installed on the connecting rod 901, the upper pressing strip 902 is installed above the lower pressing strip 903, the upper pressing strip 902 is movably installed on the connecting rod 901, and a pressing power device drives the upper pressing strip 902 to move up and down on the connecting rod 901 to loosen or press a workpiece located between the upper pressing strip 902 and the lower pressing strip 903. The pressing power device is preferably a pressing cylinder 906 (air cylinder), but may be other transmission devices such as a motor.

During specific implementation, when the workpiece 8 is transported to a corresponding position, the pressing cylinder 906 drives the upper pressing strip 902 to move downwards on the connecting rod 901 and press the workpiece 8 in cooperation with the lower pressing strip 903, so that fixation on a station is realized, and the workpiece 8 is favorably processed.

The utility model discloses preferred embodiment, hold-down mechanism 9 still includes fixed positioning wheel 904, moves positioning wheel 905, fixed positioning wheel 904, move positioning wheel 905 and install in the both sides along 8 direction of transportation of work pieces, wherein fixed positioning wheel 904 fixed mounting is in one side, moves positioning wheel 905 and installs and pass through positioning wheel transmission at the opposite side and press from both sides tightly or loosen work piece 8 in the both sides direction. The positioning wheel transmission device is preferably a positioning wheel cylinder 907, and can also be other transmission devices such as a motor and the like.

During specific implementation, the fixed positioning wheel 904 is fixed, and the movable positioning wheel 905 clamps the steel grating in the two side directions through the movable positioning wheel cylinder 907 (preferably), so that the positioning and clamping device is suitable for positioning and clamping steel grating workpieces with different widths in the width direction.

The utility model discloses preferred embodiment, hold-down mechanism 9 is established to two, separates a distance installation along the work piece direction of feed, and hold-down mechanism 9-1 before and hold-down mechanism 9-2 after being respectively for guarantee work piece 8's clamping stability.

Example 3:

in this embodiment, on the basis of embodiment 2, as shown in fig. 4, two stroke sensing devices for detecting the workpiece transport distance are added, and the two stroke sensing devices are respectively installed corresponding to the positions 9-2 of the front pressing mechanism 9-1 and the rear pressing mechanism.

In the preferred embodiment of the present invention, the stroke sensing device comprises a metering wheel 10 and an encoder 11 connected by a circuit,

the metering wheel 10 is used for detecting the workpiece transportation distance and transmitting the workpiece transportation distance to the encoder;

and the encoder 11 is used for receiving the workpiece transportation distance transmitted by the metering wheel.

The encoder 11 controls the work of the positioning wheel cylinder 907 and the pressing cylinder 906 according to the acquired workpiece conveying distance. Specifically, after the work is started, the encoder 11 controls the work of the positioning wheel cylinder 907 and the pressing cylinder 906 according to the work piece conveying distance, so that the work piece 8 is effectively clamped when entering the work station. The specific workpiece conveying distance is set according to actual needs.

In this embodiment, the stroke sensing device may also be a PLC controller, which obtains the rotation speed of the lower drum 2 through the rotation speed of the driving motor 3, so as to know the transportation distance of the workpiece, and then control the positioning wheel cylinder 907 and the pressing cylinder 906 according to the transportation distance of the workpiece.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The automatic feeding mechanism is characterized by comprising an upper roller and a lower roller, wherein the lower roller is driven to rotate by a first power device, the upper roller is arranged above the lower roller and is driven to move up and down by a second power device so as to loosen or press a workpiece between the upper roller and the lower roller.

2. The automatic feeding mechanism according to claim 1, wherein the first power device comprises a driving motor and a speed reducer, and the driving motor is connected with the lower roller through the speed reducer to drive the lower roller to rotate.

3. The automatic feeding mechanism according to claim 1, wherein the second power unit comprises a pressing cylinder, and the pressing cylinder is connected with the upper roller to drive the upper roller to move up and down.

4. The automatic feeding mechanism according to claim 3, wherein the pressing cylinder is supported above the upper roller by a bracket.

5. An automatic feeding mechanism according to claim 4, wherein said upper roller is movably mounted to said frame by means of bearing blocks.

6. The automatic feeding mechanism according to claim 1, further comprising a pressing mechanism, wherein the pressing mechanism comprises a connecting rod, an upper pressing strip and a lower pressing strip, the lower pressing strip and the upper pressing strip are both mounted on the connecting rod, the upper pressing strip is mounted above the lower pressing strip, the upper pressing strip is movably mounted on the connecting rod, and a pressing power device drives the upper pressing strip to move up and down on the connecting rod so as to loosen or press the workpiece between the upper pressing strip and the lower pressing strip.

7. The automatic feeding mechanism according to claim 6, wherein the pressing mechanism further comprises a positioning mechanism, which is used for ensuring that the workpiece is attached to the reference surface in all directions during pressing, wherein the positioning mechanism comprises a fixed positioning piece and a movable positioning piece, the fixed positioning piece and the movable positioning piece are arranged on two sides along the conveying direction of the workpiece, the fixed positioning piece is fixedly arranged on one side, and the movable positioning piece is arranged on the other side and clamps or releases the workpiece in two side directions through a positioning piece transmission device;

8. An automatic feeding mechanism according to claim 6 or 7, wherein said pressing mechanisms are provided in two, respectively front and rear, pressing mechanisms installed at a distance along the workpiece feeding direction.

9. The automatic feeding mechanism according to claim 8, further comprising two stroke sensing devices for detecting a workpiece conveying distance, wherein the two stroke sensing devices are respectively installed corresponding to the positions of the front pressing mechanism and the rear pressing mechanism.

10. The automatic feeding mechanism according to claim 9, wherein said stroke sensing means comprises a metering wheel and an encoder connected by a wire,