CN106736745A - Work Fixtures - Google Patents

Abstract

The present invention relates to a workpiece fixing apparatus. This work piece fixed equipment utilizes first electro-magnet to adsorb the apron in order to fix the work piece on the carrier to prevent that the in-process work piece of processing from shifting or being beaten by the cutter and fly, the apron directly pushes down the work piece moreover and makes the frame of work piece all expose outside, thereby can realize disposable processing to the frame of work piece, has left out this process of traditional switching-over clamping, has improved machining efficiency. In addition, the workpiece fixing equipment is provided with an adsorption component for adsorbing the cover plate, and the adsorption component is driven to be close to or far away from the workpiece through the first guide mechanism and the second guide mechanism along the movement of the first direction and the second direction, so that the cover plate is placed on the workpiece before processing, and the cover plate is taken down after the processing is finished. Therefore, the workpiece fixing equipment can automatically complete the picking and placing of the cover plate, not only improves the processing efficiency, but also saves the labor.

Description

Work Fixtures

technical field

The invention relates to the technical field of workpiece fixing, in particular to a workpiece fixing device.

Background technique

Shell workpieces (such as mobile phone shells, etc.) are relatively light and thin. When processing these workpieces, it is usually necessary to set up a fixture to fix the workpiece to prevent the workpiece from shifting or even being blown away by the tool during processing. When processing the frame of the workpiece, generally the opposite sides of the workpiece are fixed with a fixture first, and the other two sides are processed. After the processing is completed, the operator reverses and clamps the workpiece to complete the processing of the remaining two sides. This requires at least one operator for one machine, and the operator needs to reverse and clamp the workpiece in time to ensure that the processing progress will not be delayed. The whole processing process takes a long time, which greatly reduces the processing efficiency.

Contents of the invention

Based on this, it is necessary to provide a workpiece fixing device that can improve processing efficiency and save manpower.

A workpiece fixing device, used for fixing workpieces to be processed, said workpiece fixing device comprising:

The carrier, the adsorption component, the first electromagnet, the cover plate, the first guiding mechanism and the second guiding mechanism;

The carrier is used to place the workpiece;

the cover plate is configured to be placed on the workpiece;

The first electromagnet is set in cooperation with the carrier and is used to absorb the cover to fix the workpiece on the carrier;

The adsorption component is used to absorb and release the cover;

The first guiding mechanism can drive the adsorption assembly to approach or move away from the workpiece along a first direction;

The second guiding mechanism can drive the adsorption assembly to approach or move away from the workpiece along a second direction, and the second direction is perpendicular to the first direction.

In one of the embodiments, the carrier includes a flat plate and a support plate, the flat plate is used to place the workpiece, and the support plate is provided with two, which are respectively arranged at two ends of the flat plate, and the flat plate There is an air hole on the top, and the air hole is used to face the workpiece;

The workpiece fixing device also includes an air extraction assembly, the air extraction assembly includes an air pipe and a vacuum pump, one end of the air pipe is passed through the air hole, and the other end is connected to the vacuum pump.

In one of the embodiments, the two supporting plates and the flat plate are enclosed to form an accommodating cavity, and the first electromagnet is arranged in the accommodating cavity.

In one of the embodiments, the first guiding mechanism includes a guide post and a slider, the guide post extends along the first direction, the slider is slidably arranged on the guide post, and the slider and The adsorption component is connected and can drive the adsorption component to slide along the guide post.

In one of the embodiments, the second guide mechanism includes a fixed part and a movable part, the fixed part is connected with the slider, one end of the movable part is connected with the fixed part, and the other end is connected with the adsorption The components are connected, and the movable part can expand and contract in the second direction relative to the fixed part.

In one of the embodiments, the adsorption assembly includes a connecting plate, a connecting piece, and an absorbing part. One end of the connecting plate is connected to the movable part, and the other end is connected to the connecting piece. direction, the third direction is perpendicular to the first direction and the second direction, the end of the connecting piece away from the connecting plate is connected to the adsorption part, and the connecting piece is along the second direction extension;

The adsorption part is a second electromagnet or a vacuum chuck.

In one of the embodiments, the adsorption assembly further includes an elastic member, the elastic member is sheathed on the connecting member, and an end of the elastic member is connected to the adsorption part.

In one of the embodiments, the first guiding mechanism further includes a limiting plate and a limit sensor, two limiting plates are provided at both ends of the guide post respectively, and the limit sensor is set There are two limit sensors, one of which is correspondingly arranged on one of the limiting plates, and the limit sensor is arranged on the side of the limiting plate close to the guide post.

In one of the embodiments, the workpiece fixing device further includes a protective assembly, the protective assembly includes a fixed plate and a dust cover, the fixed plate is arranged at the end of the guide post, and one end of the dust cover It is connected to the fixed plate, and the other end is connected to the slider. When the slider slides along the guide post, the dust cover can expand and contract along the first direction;

There are two groups of the protection components, which are respectively arranged on both sides of the slider.

In one of the embodiments, the workpiece fixing device further includes a cleaning assembly, the cleaning assembly includes an air blowing table and an air blowing pipe, one end of the air blowing pipe is connected to the air blowing table, and the other end is used to align the described artifacts.

The above-mentioned workpiece fixing device uses the first electromagnet to absorb the cover to tightly fix the workpiece on the carrier to prevent the workpiece from shifting or being knocked off by the tool during processing, and the cover directly presses the workpiece The frame of the workpiece is exposed, so that the frame of the workpiece can be processed at one time, the traditional reversing clamping process is omitted, and the processing efficiency is improved.

Moreover, the workpiece fixing device is provided with an adsorption component for absorbing the cover plate, and through the movement of the first guide mechanism and the second guide mechanism along the first direction and the second direction, the adsorption component is driven close to or away from the workpiece, so as to Put the cover plate on the workpiece before processing, and remove the cover plate after processing. Therefore, the workpiece fixing device can automatically complete the picking and placing of the cover plate, which not only improves the processing efficiency, but also saves manpower.

Description of drawings

Fig. 1 is a schematic structural view of a workpiece fixing device according to an embodiment;

Fig. 2 is a partial structural schematic diagram of the workpiece fixing device shown in Fig. 1;

Fig. 3 is another partial structural schematic diagram of the workpiece fixing device shown in Fig. 1;

FIG. 4 is a schematic structural diagram of the second guiding mechanism shown in FIG. 3 .

detailed description

The workpiece fixing device will be further described below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 . A workpiece fixing device 10 according to an embodiment is used to place a cover plate 20 on a workpiece 30 .

The workpiece fixing device 10 includes a workbench 100 , a carrier 200 , an air extraction assembly 300 , an adsorption assembly 400 , a first guiding mechanism 500 , a second guiding mechanism 600 , and a first electromagnet 700 . Wherein, the carrier 200 , the air extraction assembly 300 , the first guiding mechanism 500 and the second guiding mechanism 600 are all installed on the workbench 100 . The carrier 200 is used to place the workpiece 30 . The suction assembly 300 uses the principle of negative pressure to tightly adsorb the workpiece 30 on the carrier 200 to help complete the first processing of the workpiece 30 . The adsorption component 400 is used to absorb and release the cover 20 . The first guiding mechanism 500 and the second guiding mechanism 600 can drive the suction part 400 to approach or move away from the workpiece 30 , so that the suction assembly 400 can place the cover 20 on the workpiece 30 or remove the cover 20 . The first electromagnet 700 can attract the cover plate 20 to fix the workpiece 30 on the carrier 200 , thereby helping to complete the second processing of the workpiece 30 .

When processing shell-type workpieces, two processing procedures are usually required: first, the back of the workpiece is processed for the first time, and then the frame of the workpiece is processed for the second time. During the first processing, the position of the workpiece 30 is fixed by using the suction assembly 300 . During the second processing, the position of the workpiece 30 is fixed by using the first electromagnet 700 and the cover plate 20 .

Specifically, the carrier 200 includes a flat plate 210 and a supporting plate 220 , the flat plate 210 is used to place the workpiece 30 , and there are two supporting plates 220 , which are respectively arranged at two ends of the flat plate 210 . The carrier 200 has an accommodating cavity 230 surrounded by two support plates 220 and a flat plate 210 . An air hole is opened on the plate 210 , and the air hole is used to be arranged facing the workpiece 30 .

The air extraction component 300 includes an air pipe 310 and a vacuum pump (not shown in the figure). One end of the air pipe 310 is passed through the air hole, and the other end is connected to the vacuum pump.

When processing for the first time, start the vacuum pump, after the cavity between the workpiece 30 and the flat plate 210 is evacuated, the outside air pressure will press the workpiece 30 tightly on the flat plate 210, so that when the back side of the workpiece 30 is processed , the workpiece 30 will not shift.

When the frame of the workpiece 30 is processed, the tool will exert a lateral force on the workpiece 30 , causing the workpiece 30 to be displaced. Therefore, it is necessary to place the cover plate 20 on the workpiece 30 before the second processing to increase the pressing force on the workpiece 30 .

Taking the viewing angle shown in FIG. 1 as the viewing angle, it is assumed that the initial position of the cover plate 20 is on the right side of the carrier 200 . The first guide mechanism 500 will first drive the adsorption assembly 400 to move to the top of the cover plate 20 along the first direction, and then the second guide mechanism 600 will drive the adsorption assembly 400 to move along the second direction, so that the adsorption assembly 400 is close to the cover plate 20, After the adsorption assembly 400 sucks up the cover plate 20, the second guide mechanism 600 drives the adsorption assembly 400 to move in the second direction in reverse, and the first guide mechanism 500 drives the adsorption assembly 400 to move in the first direction, so that the adsorption assembly 400 moves to above the workpiece 30. Finally, the second guide mechanism 600 drives the adsorption assembly 400 close to the workpiece 30, the adsorption assembly 400 releases the cover plate 20, and after the cover plate 20 is positioned on the workpiece 30, the first guide mechanism 500 and the second guide mechanism 600 drive the adsorption assembly 400 away from the workpiece 30 processing area, so as not to affect the movement of the tool. After the cover plate 20 is positioned on the workpiece 30 , the first electromagnet 700 will attract the cover plate 20 to fix the workpiece 30 .

After the second processing is completed, the first guide mechanism 500 and the second guide mechanism 600 drive the adsorption assembly 400 to remove the cover plate 20 .

In this embodiment, the first electromagnet 700 is located in the accommodating cavity 230 . An electromagnet is a device that generates electromagnetism when it is energized, and demagnetizes when it is powered off. It is generally made of soft iron or silicon steel that demagnetizes quickly. After the cover plate 20 is positioned on the workpiece 30 , the first electromagnet 700 is energized, and the first electromagnet 700 will attract the cover plate 20 after being magnetized, so that the workpiece 30 is tightly clamped between the cover plate 20 and the flat plate 210 . In order to ensure a sufficiently large adsorption force, there are two first electromagnets 700 .

The workpiece fixing device 10 of this embodiment uses the first electromagnet 700 to absorb the cover plate 20 to tightly fix the workpiece 30 on the carrier 200, so as to prevent the workpiece from shifting or being knocked off by the tool during processing. . Moreover, the cover plate 20 directly presses the workpiece 30 so that the frame of the workpiece 30 is exposed, so that the frame of the workpiece 30 can be processed at one time, the traditional reversing clamping process is omitted, and the processing efficiency is improved.

Moreover, the workpiece fixing device 10 can automatically complete the picking and placing of the cover plate 20, which not only improves the processing efficiency, but also saves manpower.

In addition, the workpiece fixing device 10 of this embodiment can also realize the automatic pick-up and placement of the workpiece 30 through the adsorption assembly 400 , the first guide mechanism 500 and the second guide mechanism 600 , which further saves manpower.

In order to facilitate the following description of the adsorption assembly 400, the first guide mechanism 500 and the second guide mechanism 600, in this embodiment, the first direction is defined as the X direction, the second direction is defined as the Z direction, and the third direction is defined as the Y direction , X direction, Y direction and Z direction are perpendicular to each other.

As shown in Figures 3 and 4, the first guide mechanism 500 includes a guide post 510 and a slider 520, the guide post extends along the X direction, the slider 520 is slidably disposed on the guide post 510, the slider 520 is connected to the adsorption assembly 400, And it can drive the adsorption assembly 400 to slide along the guide post 510 .

The second guide mechanism 600 includes a fixed part 610 and a movable part 620. The fixed part 610 is connected with the slider 520. One end of the movable part 620 is connected with the fixed part 610, and the other end is connected with the adsorption assembly 400. The movable part 620 can move relative to the fixed part. 610 expands and contracts in the Z direction.

In this embodiment, both the first guiding mechanism 500 and the second guiding mechanism 600 are slide cylinders. The slider 520 can slide a preset distance along the X direction to drive the adsorption component 400 closer to or away from the cover plate 20, and the movable part 620 can extend or shrink a preset distance relative to the fixed part 610 along the Z direction to drive the adsorption component 400 closer to or away from the cover plate 20. Cover plate 20.

The first guiding mechanism 500 further includes a limiting plate 530 and a limit sensor 540 , there are two limiting plates 530 , which are respectively arranged at two ends of the guide post 510 . There are two limit sensors 540 , one limit sensor 540 is correspondingly set on one limit plate 530 , and the limit sensor 540 is set on a side of the limit plate 530 close to the guide post 510 . When the slider 520 moves to the end of the guide post 510 and abuts against the limit sensor 540, the limit sensor 540 will stop the slider 520, preventing the slider 520 from hitting the limit plate 530 and causing damage to the first guide mechanism 500 .

Similarly, in order to prevent the telescopic distance of the movable part 620 from exceeding the preset distance due to misoperation, a sensor for monitoring the telescopic distance of the movable part 620 may also be provided on the second guide mechanism 600 .

The suction assembly 400 includes a connection plate 410 , a connection piece 420 and a suction portion 430 , one end of the connection plate is connected to the movable portion 620 and the other end is connected to the connection piece 420 , and the connection plate extends along the Y direction. An end of the connecting piece 420 away from the connecting plate 410 is connected to the adsorption portion 430 , and the connecting piece 420 extends along the Z direction. The connecting plate 410 can prevent the adsorption part 430 from interfering with other components during the moving process.

In this embodiment, the adsorption part 430 is a second electromagnet, and the adsorption and release of the cover plate 20 are realized by turning on and off the electricity of the adsorption part 430 . It can be understood that, in other implementation manners, the adsorption part 430 can also be a vacuum chuck, which absorbs and releases the cover plate 20 through the principle of negative pressure.

The adsorption assembly 400 further includes an elastic member 440 sleeved on the connecting member 420 , and an end of the elastic member 440 is connected to the adsorption portion 430 . When the adsorption part 430 touches the cover plate 20, it will generate a relatively large impact force on the cover plate. The elastic member 440 can effectively buffer the impact force and protect the processed workpiece pressed by the cover plate 20 to a certain extent. .

As shown in Figure 1, the workpiece fixing device 10 also includes a protective assembly 800, the protective assembly 800 includes a fixed plate 810 and a dust cover 820, the fixed plate 810 is located at the end of the guide post 510, and one end of the dust cover 820 is connected to the fixed plate 810 is connected, and the other end is connected with slider 520. When the slider 520 slides along the guide post 510, the dust cover 820 can expand and contract along the X direction. Moreover, the protective assembly 800 is provided with two groups, which are respectively arranged on two sides of the slider 520 . The dust cover 820 is a corrugated telescopic tube, which can prevent impurities such as dust, chips, and hard sand particles from entering the first guiding mechanism 500, reduce the damage of hard particles to the first guiding mechanism 500, and prolong the service life of the first guiding mechanism 500. In this embodiment, the fixing plate 810 is spaced apart from the limiting plate 530 . In other embodiments, the dust cover 820 may be directly connected to the limiting plate 530 , thereby omitting the fixing plate 810 .

The workpiece fixing device 10 also includes a cleaning assembly 900 . The cleaning assembly 900 includes an air blowing table 910 and an air blowing pipe (not shown in the figure). One end of the air blowing pipe is connected to the air blowing table 910 , and the other end is used to align the workpiece 30 . The cleaning assembly 900 can blow away the swarf generated during the processing in time to ensure the smooth progress of the processing.

It is worth mentioning that the operation of each component in this embodiment is controlled by a PLC program, without manual operation, which reduces labor costs. In order to ensure the appearance and tidiness of the whole device, all the wires are organized together by the wire harness 110 .

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a kind of workpiece-holding devices, it is characterised in that for fixing workpiece to be processed, the workpiece-holding devices include：

Luggage carrier, absorbent module, the first electromagnet, cover plate, the first guiding mechanism and the second guiding mechanism；

The luggage carrier is used to place the workpiece；

The cover plate is used to place on the workpiece；

First electromagnet coordinates the luggage carrier to set and described so that the workpiece to be fixed on for adsorbing the cover plate On luggage carrier；

The absorbent module is used to adsorb and discharge the cover plate；

First guiding mechanism can drive the absorbent module in the first direction closer or far from the workpiece；

Second guiding mechanism can drive the absorbent module in a second direction closer or far from the workpiece, described second Direction is perpendicular to the first direction.

2. workpiece-holding devices according to claim 1, it is characterised in that the luggage carrier includes flat board and supporting plate, The flat board is used to place the workpiece, and the supporting plate is provided with two, the two ends of the flat board is respectively arranged on, on the flat board Stomata is offered, the stomata is used for the workpiece just to setting；

The workpiece-holding devices also include vacuum elements, and the vacuum elements include tracheae and vavuum pump, the one of the tracheae End is arranged in the stomata, and the other end is connected with the vavuum pump.

3. workpiece-holding devices according to claim 2, it is characterised in that two supporting plates are enclosed with the flat board Accommodating cavity is formed, first electromagnet is in the accommodating cavity.

4. workpiece-holding devices according to claim 1, it is characterised in that first guiding mechanism includes guide pillar and cunning Block, the guide pillar extends along the first direction, and the sliding block is slidably arranged on the guide pillar, the sliding block and the absorption Component is connected, and the absorbent module can be driven to be slided along the guide pillar.

5. workpiece-holding devices according to claim 4, it is characterised in that second guiding mechanism include fixed part and Movable part, the fixed part is connected with the sliding block, and one end of the movable part is connected with the fixed part, the other end with it is described Absorbent module is connected, and the movable part can be flexible along the second direction relative to the fixed part.

6. workpiece-holding devices according to claim 5, it is characterised in that the absorbent module includes connecting plate, connection Part and adsorption section, one end of the connecting plate are connected with the movable part, and the other end is connected with the connector, the connecting plate Extend along third direction, the third direction is vertical with the first direction and the second direction, the connector away from One end of the connecting plate is connected with the adsorption section, and the connector extends along the second direction；

The adsorption section is the second electromagnet or vacuum cup.

7. workpiece-holding devices according to claim 6, it is characterised in that the absorbent module also includes elastic component, institute Elastic component is stated to be sheathed on the connector, and the end of the elastic component is connected with the adsorption section.

8. workpiece-holding devices according to claim 4, it is characterised in that first guiding mechanism also includes limiting plate And limit inductor, the limiting plate is provided with two, is respectively arranged on the two ends of the guide pillar, and the limit inductor is provided with two Individual, a limit inductor is correspondingly arranged on a limiting plate, and the limit inductor is located at described spacing Plate is near the side of the guide pillar.

9. workpiece-holding devices according to claim 4, it is characterised in that the workpiece-holding devices also include protection group Part, the guard assembly includes fixed plate and dust cover, and the fixed plate is located at the end of the guide pillar, the one of the dust cover End is connected with the fixed plate, and the other end is connected with the sliding block, when the sliding block is slided along the guide pillar, the dust cover energy It is flexible along the first direction；

The guard assembly is provided with two groups, is respectively arranged on the both sides of the sliding block.

10. workpiece-holding devices according to claim 1, it is characterised in that the workpiece-holding devices also include cleaning Component, the cleaning assembly includes air blowing platform and gas blow pipe, and one end of the gas blow pipe is connected with the air blowing platform, and the other end is used In the alignment workpiece.