Dual-function air inlet type vacuum chuck

Abstract

The utility model discloses a double-function air inlet type vacuum sucker which comprises a sucker framework (1), a rubber sheet (2) is connected to the bottom of the sucker framework (1), an air exhaust cavity (3) is formed in the inner side of the rubber sheet (2), and the double-function air inlet type vacuum sucker is characterized in that an adjusting cavity (4) is formed between the rubber sheet (2) and the sucker framework (1), and a ventilation switch (5) is connected to the portion, on one side of the adjusting cavity (4), of the sucker framework (1). The ventilation switch (5) is used for controlling the adjusting cavity (4) to be communicated with or separated from external air. According to the utility model, the adsorption stability of the vacuum chuck in different use states can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of vacuum chuck, in particular to a kind of dual-function air inlet vacuum chuck. BACKGROUND

[0002] Vacuum chuck is a commonly used handling tool, by the rubber of the bottom of suction disc is attached to the adsorbed object, then the air between base and adsorbed object is extracted, thereby the effect of forming vacuum by means of sealing is formed, so that it is tightly adsorbed with the surface of object, realizes handling effect. When vacuum chuck completes handling action, the pressure of the air extraction cavity between base and adsorbed object is released, so that the negative pressure vacuum state in the air extraction cavity is destroyed, so that vacuum chuck can be freely separated from adsorbed object.

[0003] The defect of existing vacuum chuck in actual use is that when the surface of the adsorbed object is smooth or shallow, the rubber and the surface of object can be completely attached to realize sealing effect after the attachment of vacuum chuck;But due to the relatively small friction between rubber and the surface of object, the rubber of vacuum chuck is easily slipped on the surface of object during handling, thereby the offset of vacuum chuck relative to object is formed, and the possibility of pressure relief of air extraction cavity along with the movement of vacuum chuck is increased, which affects the handling stability of vacuum chuck.

[0004] And when the surface of the adsorbed object is rough or deep, although the rubber and the surface of object are not easy to slip after mutual attachment, the sealing stability of the attachment part of the two is also decreased, that is, the rubber needs to produce greater deformation on the contact surface to realize complete filling of connecting gap in the state of vacuum chuck, so as to achieve the required sealing effect.

[0005] Due to the above limitations, it is difficult for manufacturers to ensure the stability of vacuum chuck in two different use states by simply adjusting the shape and material of rubber. INVENTION CONTENTS

[0006] The utility model aims at providing a kind of dual-function air inlet vacuum chuck. It can improve the adsorption stability of vacuum chuck in different use states.

[0007] The technical scheme of the utility model: dual-function air inlet vacuum chuck, including suction disc framework, the bottom of suction disc framework is connected with rubber, the inner side of rubber forms air extraction cavity, adjusting cavity is formed between rubber and suction disc framework, air switch is connected on the suction disc framework of one side of adjusting cavity, and air switch is used to control adjusting cavity and external air to be mutually communicated or mutually separated.

[0008] In the foregoing dual-function air inlet vacuum chuck, air extraction channel is provided on the suction disc framework, and air port matched with air extraction channel is provided on the rubber.

[0009] The air hole switch is screwed in the air hole.

[0010] The air hole switch is screwed in the air hole.

[0011] The air hole switch is screwed in the air hole.

[0012] The air hole switch is screwed in the air hole.

[0013] The air hole switch is screwed in the air hole.

[0014] The air hole switch is screwed in the air hole.

[0015] Compared with the prior art, the utility model has the following characteristics:

[0016] (1) the utility model discloses a structure cooperation of adjusting cavity and air hole switch makes the vacuum chuck when being used to the object of smooth surface or shallow hair surface carries out adsorption, can loosen the air hole switch and makes adjusting cavity with external air intercommunication, this makes when the air exhaust cavity with air exhaust forms negative pressure state, external air can enter adjusting cavity with the middle region of rubber skin and exert the positive pressure of object surface to the middle region of rubber skin under the action of air pressure, makes the middle region of rubber skin under the action of air pressure and object surface tightly combined, namely realizes antiskid function;

[0017] When the vacuum chuck is used for rough surface or deep hair surface object adsorption, the operator tightens the air hole switch and makes adjusting cavity and external air mutual separation, at this time, the air exhaust cavity is in the closed state, that is, the rubber skin middle region will not be deformed downward due to the change of air pressure in the air exhaust cavity, and the air exhaust cavity can reach the specified air pressure value in this state, and the external air will also concentrate on the rubber skin around the lip and exert pressure, thereby improving the deformation amplitude and sealing effect of the lip.

[0018] (2) By the connecting structure between the sucker skeleton and the rubber, on the one hand, the mutual buckling of the clamping groove and the clamping part can improve the sealing between the sucker skeleton and the rubber, and reduce the possibility of external air entering the adjusting cavity from the connecting gap between the two; on the other hand, the support frame and the connecting screw can cooperate to compress the rubber, so that the rubber can be tightly attached to the sucker skeleton, preventing the flexible rubber from deforming and decoupling after being subjected to local stress;

[0019] (3) By limiting the shape of the rubber, on the one hand, the deformation ability of the lip can be improved, so that the lip can be folded downward and tightly attached to the surface of the object when the suction cavity is in a negative pressure state, thereby improving the sealing effect; on the other hand, when the adjusting cavity is in a closed state, external air will exert downward pressure on the lip from the deformation groove under the action of air pressure, so that the lip will form a larger deformation amplitude under the action of air pressure and improve the tightness of the attachment to the surface of the object;

[0020] (4) When the operator presses the vacuum sucker, the lip can be limited by the setting of the stop edge, that is, to prevent the lip from being adhered to the clamping part above after being deformed under pressure and affecting the subsequent folding effect, thereby further improving the sealing effect of the rubber;

[0021] Therefore, the vacuum sucker can improve the adsorption stability under different use states. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the appearance diagram of the utility model;

[0023] Figure 2 is the sectional view of the utility model;

[0024] Figure 3 is Figure 2 the A direction enlarged view of

[0025] Figure 4 is Figure 2 the B direction enlarged view of

[0026] The marks in the drawings are: 1-sucker skeleton, 2-rubber, 3-suction cavity, 4-adjusting cavity, 5-ventilation switch, 6-air port, 7-vent hole, 8-sealing ring, 9-connecting screw, 10-support frame, 101-step groove, 102-clamping groove, 103-stop edge, 201-clamping part, 202-lip, 203-deformation groove. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings and examples, but it is not as the basis for limiting the utility model.

[0028] Example. Dual-function air inlet type vacuum sucker, consisting ofFigure 1 As shown, it comprises a suction disc skeleton 1, the bottom of the suction disc skeleton 1 is connected with a rubber skin 2, the inner side of the rubber skin 2 forms an air suction cavity 3, the rubber skin 2 and the suction disc skeleton 1 form an adjusting cavity 4 between them, the adjusting cavity 4 and the air suction cavity 3 are distributed in an up-down manner and are separated from each other through the rubber skin 2, the suction disc skeleton 1 on one side of the adjusting cavity 4 is connected with a ventilation switch 5, the ventilation switch 5 is used for controlling the adjusting cavity 4 to be communicated with or separated from the external air.

[0029] The suction disc skeleton 1 is provided with an air suction channel, the rubber skin 2 is provided with an air port 6 matched with the air suction channel, the air suction channel, the air port 6 and the air suction cavity 3 are sequentially communicated; when the vacuum suction disc is used, the air in the air suction cavity 3 is sucked by an air suction pump through the air suction channel and the air port 6, so that the air suction cavity 3 forms a negative pressure state after being sucked, and the adsorption function is realized.

[0030] The air port 6 is provided below with a pressing plate buckled to connect the rubber skin 2, the pressing plate and the suction disc skeleton 1 are screw-connected and used for extruding and limiting the rubber skin 2 around the air port 6, so that the air suction channel and the adjusting cavity 4 are separated from each other, and the air leakage problem of the vacuum suction disc when the ventilation switch 5 is opened is prevented.

[0031] The suction disc skeleton 1 forms a ventilation hole 7, the ventilation switch 5 is screw-connected in the ventilation hole 7, and the ventilation switch 5 forms a gap for the external air to enter after being unscrewed.

[0032] The suction disc skeleton 1 outside the ventilation hole 7 forms a stepped groove 101, the stepped groove 101 is provided with a sealing ring 8, and the outer end of the ventilation switch 5 and the surface of the sealing ring 8 are mutually attached.

[0033] The bottom of the suction disc skeleton 1 is provided with a clamping groove 102, the periphery of the rubber skin 2 is buckled to connect the clamping groove 102 through a clamping part 201, the suction disc skeleton 1 and the rubber skin 2 are mutually connected through a connecting screw 9, and the adjusting cavity 4 is located on the radial inner side of the clamping groove 102.

[0034] The middle of the rubber skin 2 is provided with a support frame 10 located in the clamping groove 102, the support frame 10 is of a rigid material, and the rubber skin 2 of a rubber material is overmolded outside the support frame 10, and the connecting screw 9 passes through the support frame 10 to connect the suction disc skeleton 1.

[0035] The bottom of the rubber skin 2 is provided with an annular lip 202, the lower end of the lip 202 forms an inclined surface used for attaching to the surface of an object, the upper end of the lip 202 forms a deformation groove 203 of a long strip-shaped section, the upper end of the deformation groove 203 extends to the inner side of the clamping groove 102, and the lower end of the deformation groove 203 is located on the outer side of the clamping groove 102.

[0036] The annular flange 103 is formed around the suction disc skeleton 1, and the lower end of the flange 103 is located below the bottom surface of the clamping portion 201 in the vertical direction, and the lip 202 is located below the flange 103 and is arranged in an upper and lower spaced manner with the flange 103.

[0037] The working principle of the utility model is as follows: when the utility model is used for adsorbing a smooth surface or a shallow surface, an operator loosens or removes the air vent switch 5, so that external air can enter the adjusting cavity 4 through the air hole 7. Then, the operator starts the air suction pump of the vacuum chuck to suck the gas in the air suction cavity 3. When the air suction cavity 3 forms a negative pressure state due to suction, external air enters the adjusting cavity 4 under the action of air pressure and exerts a downward pressure on the rubber 2 below, so that the middle region of the rubber 2 deforms downward under the action of air pressure and tightly adheres to the surface of the object, thereby improving the friction between the rubber 2 and the surface of the object and preventing the suction disc skeleton 1 from slipping during use.

[0038] When the utility model is used for adsorbing a rough surface or a deep surface, the operator tightens the air vent switch 5, so that the air vent switch 5 tightly adheres to the surface of the suction disc skeleton 1 after being tightened and sealed by the sealing ring 8, thereby closing the air hole 7 and preventing external air from entering the adjusting cavity 4. In this state, the amount of air in the adjusting cavity 4 remains fixed, that is, the middle region of the rubber 2 will not deform downward due to the change in air pressure in the air suction cavity 3. After the air vent switch 5 is tightened, the operator starts the air suction pump of the vacuum chuck to suck the gas in the air suction cavity 3. When the air suction cavity 3 forms a negative pressure state due to suction, external air will concentrate on the lip 202 around the rubber 2 and exert an inward extrusion force on the lip 202 under the action of air pressure, so that the lip 202 tightly adheres to the surface of the object under the action of air pressure and improves the sealing degree of the contact part.

Claims

1. A double-function air inlet vacuum chuck, comprising a chuck skeleton (1), a rubber skin (2) connected to the bottom of the chuck skeleton (1), and an air suction cavity (3) formed on the inner side of the rubber skin (2), characterized in that: The rubber (2) and the sucker skeleton (1) form a regulating cavity (4), the sucker skeleton (1) on one side of the regulating cavity (4) is connected with a ventilation switch (5), the ventilation switch (5) is used for controlling the regulating cavity (4) and the external air to be communicated or separated.

2. The dual function air inlet vacuum chuck of claim 1, wherein: The sucker skeleton (1) is provided with an air extraction channel, and the rubber (2) is provided with an air port (6) matched with the air extraction channel.

3. The dual function air inlet vacuum chuck of claim 1, wherein: The sucker skeleton (1) is provided with a ventilation hole (7), and the ventilation switch (5) is threadedly connected in the ventilation hole (7).

4. The dual function air inlet vacuum chuck of claim 3, wherein: The sucker skeleton (1) outside the ventilation hole (7) is provided with a stepped groove (101), the stepped groove (101) is provided with a sealing ring (8), and the outer end of the ventilation switch (5) and the surface of the sealing ring (8) are matched with each other.

5. The dual function air inlet vacuum chuck of claim 1, wherein: The bottom of the sucker skeleton (1) is provided with a clamping groove (102), the periphery of the rubber (2) is clamped and connected with the clamping groove (102) through a clamping part (201), and the sucker skeleton (1) and the rubber (2) are connected with each other through a connecting screw (9).

6. The dual function air inlet vacuum chuck of claim 5, wherein: The middle of the rubber (2) is provided with a support frame (10) located in the clamping groove (102), and the connecting screw (9) passes through the support frame (10) to connect the sucker skeleton (1).

7. The dual function air inlet vacuum chuck of claim 5, wherein: The bottom of the rubber (2) is provided with an annular lip (202), the upper end of the lip (202) forms an elongated cross-section deformation groove (203), the upper end of the deformation groove (203) extends to the inner side of the clamping groove (102), and the lower end of the deformation groove (203) is located on the outer side of the clamping groove (102).

8. The dual function air inlet vacuum chuck of claim 7, wherein: The periphery of the sucker skeleton (1) forms an annular retaining edge (103), and the lip (202) is located below the retaining edge (103) and is arranged in an upper and lower spaced manner with the retaining edge (103).

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