A vacuum clamp

Abstract

The present invention provides a vacuum clamp, including: a base, a fixed platform, a plurality of lifting platforms and a cylinder. The fixed platform is arranged on the base, the fixed platform is fixedly connected to the base, and the fixed platform includes a first suction cup connected to a vacuum generator; the lifting platform is arranged around the fixed platform, and the upper surface of the lifting platform is provided with a second suction cup connected to the vacuum generator; the cylinder is arranged on the base, and the cylinder drives the lifting platform to move up and down. Compared with the prior art, after the vacuum clamp of the present invention completes the rough processing process, under the attraction of the second suction cup, the cut frame material moves downward with the lifting platform, thereby realizing the separation of the frame material and the plate. It saves the time of manually removing the frame material during processing, and ensures that the position of the plate will not change after the frame material and the plate are separated.

Description

Technical Field

[0001] The invention relates to the technical field of industrial clamp equipment, and in particular to a vacuum clamp. Background Art

[0002] According to the process requirements of precision machining of composite plates, the rough machining and fine machining of the workpiece are completed on the same fixture, and the process is rough machining first and then fine machining. Among them, the rough machining process mainly removes the surrounding frame materials for auxiliary positioning. In order to prevent the residual frame materials from hindering the tool from fine machining, the previous fixtures often need to stop the program after the rough machining process and manually remove the frame materials before fine machining of the plate, so that the auxiliary time is greatly increased and the efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a vacuum clamp.

[0004] One embodiment of the present invention provides a vacuum clamp, comprising:

[0005] Pedestal;

[0006] A fixing platform, the fixing platform is arranged on the base, the fixing platform is fixedly connected to the base, and the fixing platform comprises a first suction cup connected to a vacuum generator;

[0007] A plurality of lifting platforms, the lifting platforms are arranged around the fixed platform, and the upper surface of the lifting platforms is provided with a second suction cup connected to the vacuum generator;

[0008] A cylinder is arranged on the base, and the cylinder drives the lifting platform to move up and down.

[0009] Compared with the prior art, after the vacuum clamp of the present invention completes the rough processing process, under the attraction of the second suction cup, the cut frame material moves downward with the lifting platform, and the plate to be finely processed is fixed on the fixed platform under the attraction of the first suction cup, thereby realizing the separation of the frame material and the plate. This saves the time of manually removing the frame material during processing and ensures that the position of the plate will not change after the frame material and the plate are separated.

[0010] Furthermore, it also includes a base plate, which is arranged above the cylinder, the base plate is in contact with or detachably connected to the push rod of the cylinder, the plurality of lifting platforms are arranged on the base plate, and the base plate is provided with a plurality of first openings; the base includes a bottom plate and a plurality of support blocks arranged on the bottom plate, the cylinder is arranged on the bottom plate, and the support blocks are connected to the fixed platform through the first openings. The lifting platforms are made to rise or fall at the same time, and remain on the same relative horizontal plane during the rising or falling process.

[0011] Furthermore, it also includes a first positioning pin and a positioning block, wherein the first positioning pin is fixedly connected to the substrate; the positioning block is arranged on the fixing platform, a pin hole is arranged at the center of the positioning block, and the first positioning pin corresponds to the pin hole. The spatial position of the substrate rising is limited by the cooperation of the positioning pin and the pin hole.

[0012] Further, the fixing table includes a positioning part and a first suction cup from bottom to top; the positioning part is provided with a first vacuum connection port connected to the vacuum generator, a first vacuum suction port and two recessed parts, the first vacuum connection port is arranged on the side of the positioning part, the first vacuum suction port is arranged and the two recessed parts are arranged on the upper surface of the positioning part, the first vacuum suction port is communicated with the first vacuum connection port, the two recessed parts are respectively arranged on both sides of the first vacuum suction port, a positioning channel is provided inside the recessed part, the positioning block is detachably arranged in the recessed part, the positioning channel is located below the pin hole, the positioning pin passes through the positioning channel and is inserted into the pin hole; the first suction cup is detachably connected to the positioning part, the first suction cup is provided with a vacuum channel and a first vacuum groove, the vacuum channel is a cylindrical hollow channel, one end of the vacuum channel is arranged on the lower surface of the first suction cup and is communicated with the first vacuum suction port, the first vacuum groove is a groove communicated with the other end of the vacuum channel, and the first vacuum groove is arranged on the upper surface of the first suction cup. By separately providing the positioning portion and the first suction cup, the difficulty of processing and installing the accessory is reduced, and the cost of repairing or replacing the accessory is reduced.

[0013] Furthermore, a throttling hole is provided above the pin hole, and the pin hole is connected to the upper surface of the positioning block through the throttling hole. The side and bottom surfaces of the positioning block are provided with a first groove and a second groove respectively, and the first groove is connected to the upper surface of the positioning block, and the second groove is connected to the first groove. The positioning pin pushes air into the pin hole when entering the pin hole, and the throttling hole acts as an air buffer when the air passes through. The first groove and the second groove increase the space for storing air, avoiding excessive air pressure caused by too small a space, and ensuring that the end of the positioning pin abuts against the inside of the pin hole smoothly.

[0014] Furthermore, it also includes a plurality of second positioning pins, which are arranged around the fixing platform and fixedly connected to the upper surface of the substrate, so as to position the frame material and improve the positioning accuracy.

[0015] Furthermore, the second suction cup includes a second vacuum groove and a second vacuum suction port disposed in the second vacuum groove. The air between the second vacuum groove and the frame material is sucked out by the vacuum generator through the second suction cup, so that the frame material is closely attached to the lifting platform under the action of air pressure.

[0016] Furthermore, a second vacuum connection port connected to the vacuum generator is also provided on the outer side of the lifting platform, and the second suction cup is connected to the second vacuum connection port and is connected to the vacuum generator through the second vacuum connection port, ensuring that the second suction cup is connected to the vacuum generator.

[0017] Furthermore, a regulating valve is included, the regulating valve is connected to the air flow channel of the cylinder, and the regulating valve is exposed outside the bottom plate, so that the user can adjust the air flow speed of the cylinder to control the lifting speed of the base plate.

[0018] Furthermore, it also includes a protective plate, which is arranged on the bottom plate and surrounds the support block and the cylinder to prevent dust or water vapor from entering the interior during the processing.

[0019] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. 4 is a cross-sectional view of a vacuum chuck according to an embodiment of the present invention.

[0021] Figure 2 FIG. 4 is a front view of a vacuum clamp according to an embodiment of the present invention.

[0022] Figure 3 FIG. 4 is a schematic diagram of a vacuum clamp according to an embodiment of the present invention.

[0023] Figure 4 The figure is a schematic diagram of the connection between the first positioning pin and the positioning block of the vacuum clamp according to an embodiment of the present invention.

[0024] Figure 5 FIG. 1 is a top view of a fixing portion of a fixing table of a vacuum clamp according to an embodiment of the present invention.

[0025] Figure 6 The figure is a structural diagram of a positioning block of a vacuum clamp according to an embodiment of the present invention.

[0026] Figure 7 FIG. 4 is a side view of a vacuum chuck according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-7 ,in, Figure 1 is a cross-sectional view of a vacuum clamp according to an embodiment of the present invention, Figure 2 FIG. 1 is a front view of a vacuum clamp according to an embodiment of the present invention. Figure 3 is a schematic diagram of a vacuum clamp according to an embodiment of the present invention, Figure 4 This is a schematic diagram of the connection between the first positioning pin and the positioning block of a vacuum clamp according to an embodiment of the present invention. Figure 5 FIG. 1 is a top view of a fixing portion of a fixing table of a vacuum clamp according to an embodiment of the present invention. Figure 6 This is a structural diagram of a positioning block of a vacuum clamp according to an embodiment of the present invention. Figure 7 FIG. 4 is a side view of a vacuum chuck according to an embodiment of the present invention.

[0029] See also Figure 1 , a vacuum clamp according to an embodiment of the present invention comprises:

[0030] Base 1;

[0031] A fixing platform 2, wherein the fixing platform 2 is arranged on the base 1, the fixing platform 2 is fixedly connected to the base 1, and the fixing platform 2 comprises a first suction cup 22 connected to a vacuum generator; preferably, the fixing platform 2 is a rectangular fixing platform 2, and the fixing platform 2 is bolted to the base 1; preferably, the corners of the fixing platform 2 are flat angles and even rounded corners; preferably, a sealing ring is provided on the first suction cup 22.

[0032] A plurality of lifting platforms 3 are arranged around the fixed platform 2, and the upper surface of the lifting platform 3 is provided with a second suction cup 32 connected to the vacuum generator; preferably, two or more lifting platforms 3 are provided on at least one side of the fixed platform 2; preferably, a sealing ring is provided on the second suction cup 32.

[0033] Cylinder 4, the cylinder 4 is arranged on the base 1, and the cylinder 4 drives the lifting platform 3 to move up and down. Preferably, the cylinder 4 drives all the lifting platforms 3 to move up and down at the same time, and the lifting platforms 3 are always relatively located at the same horizontal height during the up and down movement. Preferably, the push rod of the cylinder 4 includes a central support rod in the same direction, two auxiliary support rods and a flat push plate, the central support rod is arranged at the center position of the cylinder 4, the two auxiliary support rods are symmetrical with each other around the central support rod, the central support rod and the two auxiliary support rods are arranged in the same direction, and the flat push plate is fixedly connected to the central support rod and the two auxiliary support rods respectively.

[0034] The first suction cup 22 and the second suction cup 32 may be connected to the same vacuum generator, or may be connected to two different vacuum generators. Preferably, the first suction cup 22 and the second suction cup 32 may be connected to two different vacuum generators.

[0035] In other embodiments, those skilled in the art may also connect the first suction cup 22 and the second suction cup 32 to two groups of interfaces of the same vacuum generator controlled by different control switches according to control requirements.

[0036] See also Figure 2-3 In this embodiment, preferably, the number of the lifting platforms 3 is 6, and two and one lifting platforms 3 are respectively provided on any two adjacent sides of the fixed platform 2. The upper surface of the lifting platform 3 is located on the same horizontal plane as the upper surface of the fixed platform 2. The unprocessed sheet material is placed on the fixed platform 2 and the lifting platform 3. The vacuum generator is used to suck away the air between the sheet material and the upper surface of the lifting platform 3 and the upper surface of the fixed platform 2 through the first suction cup 22 and the second suction cup 32, and the sealing ring prevents the external air from entering, thereby forming a vacuum state. The sheet material is clamped on the lifting platform 3 and the fixed platform 2 respectively under the action of air pressure. After the rough processing is completed, the cylinder 4 drives all the lifting platforms 3 to descend at the same time. Under the action of air pressure, the lifting platform 3 clamps the sheet material and descends to a certain height. The sheet material that needs to be finely processed is clamped on the fixed platform 2. Compared with the prior art, the vacuum clamp of the present invention can directly separate the frame material from the plate, saving the time of manually removing the frame material during processing, and ensuring that the position of the plate will not change after the frame material and the plate are separated.

[0037] In one embodiment, the vacuum clamp of the present invention further includes a substrate 5, which is arranged above the cylinder 4, and the substrate 5 is in contact with or detachably connected to the push rod of the cylinder 4, and the plurality of lifting platforms 3 are arranged on the substrate 5, and the substrate 5 is provided with a plurality of first openings; the base 1 includes a bottom plate 11 and a plurality of support blocks 12 arranged on the bottom plate 11, the cylinder 4 is arranged on the bottom plate 11, and the support blocks 12 are connected to the fixed platform 2 through the first openings.

[0038] Preferably, the base plate 5 is bolted to the push rod of the cylinder 4 to improve the stability of the base plate 5 when the push rod of the cylinder 4 pushes it to move up and down.

[0039] Preferably, the support block 12 is bolted to the fixing platform 2 to ensure that the fixing platform 2 will not be displaced due to interference.

[0040] In this embodiment, the base plate 5 ensures that all the lifting platforms 3 rise or fall at the same time and remain on the same relative horizontal plane during the rising or falling process.

[0041] See also Figure 1 and Figure 4 In one embodiment, the first positioning pin 60 and the positioning block 62 are further included. The first positioning pin 60 is fixedly connected to the substrate 5. The positioning block 62 is arranged on the fixing platform 2. The center of the positioning block 62 is provided with a pin hole 622. The first positioning pin 60 corresponds to the pin hole 622. Preferably, at least two first positioning pins 60 and positioning blocks 62 are provided. Preferably, the positioning block 62 is detachably arranged on the fixing platform 2. Preferably, the positioning block 62 is bolted to the fixing platform 2.

[0042] In this embodiment, through the cooperation of the positioning pin and the pin hole 622, when the substrate 5 rises, the first positioning pin 60 is inserted into the pin hole 622 of the positioning block, and the spatial position of the first positioning pin 60 is limited by the pin hole 622. Since the first positioning pin 60 is fixedly connected to the substrate 5, the spatial position of the rising substrate 5 is also limited, thereby ensuring that the upper surface of the lifting platform 3 and the upper surface of the fixed platform 2 are located on the same horizontal plane after rising.

[0043] See also Figure 1 and Figure 5In one embodiment, the fixed platform 2 includes a positioning portion 24 and a first suction cup 22 from bottom to top; the positioning portion 24 is provided with a first vacuum connection port 241 connected to a vacuum generator, a first vacuum suction port 242 and two recessed portions 244, the first vacuum connection port 241 is arranged on the side of the positioning portion 24, preferably, the first vacuum connection port 241 is located on one side of the two lifting platforms 3, preferably, the first vacuum connection port 241 is arranged between the two lifting platforms 3. The first vacuum suction port 242 is provided and two recessed portions 244 are provided on the upper surface of the positioning portion 24, the first vacuum suction port 242 is communicated with the first vacuum connection port 241, the two recessed portions 244 are respectively provided on both sides of the first vacuum suction port 242, a positioning channel is provided inside the recessed portion 244, the positioning block 62 is detachably provided in the recessed portion 244, the positioning channel is located below the pin hole 622, the positioning pin passes through the positioning channel and is inserted into the pin hole 622; the first suction cup 22 is detachably connected to the positioning portion 24, the first suction cup 22 is provided with a vacuum channel 222 and a first vacuum groove 224, the vacuum channel 222 is a cylindrical hollow channel, one end of the vacuum channel 222 is provided on the lower surface of the first suction cup 22 and communicated with the first vacuum suction port 242, the first vacuum groove 224 is a groove communicated with the other end of the vacuum channel 222, and the first vacuum groove 224 is provided on the upper surface of the first suction cup 22.

[0044] Preferably, the positioning block is arranged in the recessed portion 244 by bolt connection.

[0045] Preferably, a sealing ring is provided at the connection between the positioning pin and the base plate 5 .

[0046] Preferably, a first thread is disposed on the inner side of the first vacuum connection port 241 , and the first vacuum connection port 241 is connected to a pipe port of a vacuum generator through the first thread.

[0047] In this embodiment, by separately providing the positioning portion 24 and the first suction cup 22, the difficulty of processing and installing the accessories is reduced, and the cost of repairing or replacing the accessories is reduced. When the positioning pin is not inserted into the pin hole 622, the positioning channel limits the upward and downward movement path of the positioning pin, ensuring that the positioning pin can be accurately inserted into the pin hole 622 when moving upward.

[0048] See also Figure 4 and Figure 6In one embodiment, a throttling hole 624 is provided above the pin hole 622, and the pin hole 622 is connected to the upper surface of the positioning block through the throttling hole 624. The side and bottom surfaces of the positioning block 62 are respectively provided with a first groove 624 and a second groove 626. The first groove 624 is connected to the upper surface of the positioning block 62, and the second groove 626 is connected to the first groove 624.

[0049] In this embodiment, the positioning pin pushes air into the pin hole 622 when entering the pin hole 622, and the throttling hole 624 acts as an air buffer when the air passes through. Since the air squeezed during the rising process of the positioning pin flows to the upper surface of the positioning block 62 through the throttling pin hole 622, the first groove 624 and the second groove 626 increase the space for storing air, thus avoiding excessive air pressure caused by too small a space, thereby ensuring that the end of the positioning pin is smoothly abutted against the inside of the pin hole 622.

[0050] See also Figure 3 In one embodiment, the vacuum clamp of the present invention further includes a plurality of second positioning pins 7, which are arranged around the fixing table 2 and fixedly connected to the upper surface of the substrate 5. Preferably, the second positioning pins 7 are distributed at the corners of the substrate 5, and the second positioning pins 7 are used to position the frame material to improve the accuracy of positioning.

[0051] In one embodiment, the second suction cup 32 includes a second vacuum groove and a second vacuum suction port disposed in the second vacuum groove. Preferably, the second vacuum groove is disposed on a protruding portion of the upper surface of the lifting platform 3, and the air between the second vacuum groove and the frame material is sucked out through the second suction cup 32 by a vacuum generator, so that the frame material is closely attached to the lifting platform 3 under the action of air pressure.

[0052] Preferably, a second vacuum connection port 322 connected to the vacuum generator is further provided on the outer side of the lifting platform 3, and the second suction cup 32 is connected to the second vacuum connection port 322 and is connected to the vacuum generator through the second vacuum connection port 322. Ensure that the second suction cup 32 is connected to the vacuum generator.

[0053] Preferably, a second thread is disposed on the inner side of the second vacuum connection port 322 , and the second vacuum connection port 322 is connected to the pipe port of the vacuum generator through the second thread.

[0054] See also Figure 2 , Figure 3 and Figure 7In one embodiment, the vacuum clamp of the present invention further includes a regulating valve 8, which is connected to the air flow channel of the cylinder 4 and exposed on the outside of the bottom plate 11. The user can adjust the regulating valve 8 exposed on the outside of the bottom plate 11 according to the use requirements, so as to control the air flow in and out speed of the cylinder 4, so as to achieve the effect of controlling the lifting speed of the substrate 5.

[0055] Preferably, the regulating valve 8 includes an air inlet regulating valve 8 and an air outlet regulating valve, the air inlet regulating valve is connected to the air inlet passage of the cylinder 4, and the air outlet regulating valve is connected to the air outlet passage of the cylinder 4. The ascending speed and descending speed of the substrate 5 can be adjusted separately.

[0056] In one embodiment, the vacuum clamp of the present invention further comprises a protective plate 9, which is disposed on the bottom plate 11 and surrounds the support block 12 and the cylinder 4 to prevent dust or water vapor from entering the interior during processing.

[0057] Preferably, the protective plate 9 is connected to the fixing block by bolts. If the protective plate 9 is damaged, the user can remove the damaged protective plate 9 and replace it with a suitable protective plate 9.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum clamp, characterized in that: include: Pedestal; A fixing platform, the fixing platform is arranged on the base, the fixing platform is fixedly connected to the base, and the fixing platform comprises a first suction cup connected to a vacuum generator; A plurality of lifting platforms, the lifting platforms are arranged around the fixed platform, and the upper surface of the lifting platforms is provided with a second suction cup connected to the vacuum generator; A cylinder, wherein the cylinder is arranged on the base and drives the lifting platform to move up and down; A base plate is arranged above the cylinder, the base plate is in contact with or detachably connected to the push rod of the cylinder, the plurality of lifting platforms are arranged on the base plate, and the base plate is provided with a plurality of first openings; the base comprises a bottom plate and a plurality of support blocks arranged on the bottom plate, the cylinder is arranged on the bottom plate, and the support blocks are connected to the fixed platform through the first openings; It also includes a first positioning pin and a positioning block, wherein the first positioning pin is fixedly connected to the substrate; the positioning block is disposed on the fixing platform, a pin hole is disposed at the center of the positioning block, and the first positioning pin corresponds to the pin hole; The fixing platform includes a positioning part and a first suction cup from bottom to top; the positioning part is provided with a first vacuum connection port connected to the vacuum generator, a first vacuum suction port and two recessed parts, the first vacuum connection port is arranged on the side of the positioning part, the first vacuum suction port is arranged and the two recessed parts are arranged on the upper surface of the positioning part, the first vacuum suction port is communicated with the first vacuum connection port, the two recessed parts are respectively arranged on both sides of the first vacuum suction port, a positioning channel is arranged inside the recessed part, the positioning block is detachably arranged in the recessed part, the positioning channel is located below the pin hole, the positioning pin passes through the positioning channel and is inserted into the pin hole; the first suction cup is detachably connected to the positioning part, the first suction cup is provided with a vacuum channel and a first vacuum groove, the vacuum channel is a cylindrical hollow channel, one end of the vacuum channel is arranged on the lower surface of the first suction cup and is communicated with the first vacuum suction port, the first vacuum groove is a groove communicated with the other end of the vacuum channel, and the first vacuum groove is arranged on the upper surface of the first suction cup; It also includes a plurality of second positioning pins, which are arranged around the fixing platform and fixedly connected to the upper surface of the substrate.

2. A vacuum clamp according to claim 1, characterized in that: A throttling hole is provided above the pin hole, and the pin hole is connected to the upper surface of the positioning block through the throttling hole. The side and bottom surfaces of the positioning block are respectively provided with a first groove and a second groove, the first groove is connected to the upper surface of the positioning block, and the second groove is connected to the first groove.

3. A vacuum clamp according to claim 1, characterized in that: The second suction cup includes a second vacuum groove and a second vacuum suction port disposed in the second vacuum groove.

4. A vacuum clamp according to claim 1, characterized in that: A second vacuum connection port connected to the vacuum generator is also provided on the outer side of the lifting platform. The second suction cup is connected to the second vacuum connection port and is connected to the vacuum generator through the second vacuum connection port.

5. A vacuum clamp according to claim 1, characterized in that: It also includes a regulating valve, which is connected to the air flow channel of the cylinder and exposed on the outside of the bottom plate.

6. A vacuum clamp according to claim 1, characterized in that: It also includes a protection plate, which is arranged on the bottom plate and surrounds the support block and the cylinder.

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