Vacuum chuck and workbench thereof

Abstract

The utility model relates to the technical field of machining centers, in particular to a vacuum chuck and a workbench thereof, the vacuum chuck comprises a vacuum box, the vacuum box is provided with a top opening and a side opening, and the vacuum box is closed except the top opening and the side opening; the adsorption block is arranged on the vacuum box, an axial avoiding groove is formed in the upper portion of the adsorption block, and the axial avoiding groove divides the upper portion of the adsorption block into a first side adsorption part and a second side adsorption part; the first side adsorption part and the second side adsorption part are each provided with a penetrating hole penetrating through the top faces of the first side adsorption part and the second side adsorption part and the bottom face of the adsorption block, and the penetrating holes communicate with an inner cavity of the vacuum box through the top open hole. The axial avoiding groove formed in the upper portion of the adsorption block can avoid the cutting path of a cutter, meanwhile, the upper portion of the adsorption block is divided into the first side adsorption part and the second side adsorption part so that a workpiece can be supported, adsorbed and fixed on the two sides of the cutting path, and a narrow batten can be stably supported and fixed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining centers, in particular to a vacuum chuck and a combined worktable using the same. BACKGROUND

[0002] A machining center with cutting function uses vacuum adsorption means to fix the workpiece, specifically using a vacuum chuck to support and fix the workpiece from the bottom surface of the workpiece. The vacuum chuck of the prior art includes a plurality of vacuum boxes independently or commonly connected with a vacuum source pipeline, an adsorption block screw-mounted on the top surface of the vacuum box, and in some cases a sealing protection ring or sealing gasket may be adhesively mounted on the surface of the adsorption block.

[0003] For example, the work platform disclosed in the utility model patent with publication number CN221065428U and named "work platform with combined vacuum chuck and machining center thereof" includes a track and a combined vacuum chuck capable of sliding along the track. In the above-mentioned scheme, a set (two) of the work platform is required to complete the support and fixation of the workpiece, and a gap is required between the two work platforms to avoid the cutting path of the cutter. At the same time, the overall structure of the work platform is relatively complex, and a gap is required between the two work platforms to avoid interference. Therefore, the machining center provided by the above-mentioned technical scheme cannot process narrow strips with a small width, i.e. it cannot effectively support and fix narrow strips with a width less than 290 cm for width direction splitting processing. SUMMARY

[0004] The purpose of the present utility model is to provide a vacuum chuck, which has an axial avoiding groove opened in the upper part of the adsorption block to avoid the cutting path of the cutter, and divides the upper part of the adsorption block into a first side adsorption part and a second side adsorption part to support and adsorptively fix the workpiece on both sides of the cutting path. Since the two adsorption parts and the axial avoiding groove of the vacuum chuck are arranged on the same vacuum box, only one worktable base is required to complete the support and adsorptive fixation of the workpiece, and two work platforms are not required, so that narrow strips with a width of 90-290 cm can be stably supported and fixed. The following technical scheme is specifically adopted:

[0005] A vacuum chuck, comprising:

[0006] A vacuum box, which is closed except for a top opening and a side opening;

[0007] An adsorption block, which is arranged above the vacuum box and has an axial avoiding groove opened in the upper part thereof, the axial avoiding groove dividing the upper part of the adsorption block into a first side adsorption part and a second side adsorption part;

[0008] The first side adsorption part and the second side adsorption part are both provided with a through hole penetrating through the top surface and the bottom surface of the adsorption block, and the through hole is communicated with the inner cavity of the vacuum box through the top opening.

[0009] Preferably, the width of the axial avoiding slot is 3-5 cm.

[0010] Preferably, the width of the first side adsorption part is greater than that of the second side adsorption part.

[0011] Preferably, the upper part of the adsorption block is further provided with a transverse avoiding slot, and the axial avoiding slot and the transverse avoiding slot intersect.

[0012] Further preferably, the axial avoiding slot and the transverse avoiding slot intersect perpendicularly.

[0013] Further preferably, the transverse avoiding slot divides the first side adsorption part into a first side front end adsorption part and a first side rear end adsorption part, and divides the second side adsorption part into a second side front end adsorption part and a second side rear end adsorption part, and the first side front end adsorption part, the first side rear end adsorption part, the second side front end adsorption part and the second side rear end adsorption part are all provided with the through hole penetrating through the top surface and the bottom surface of the adsorption block.

[0014] Preferably, the top surface of the first side adsorption part and the second side adsorption part is provided with a sealing protection ring arranged around the top surface.

[0015] The application also provides a workbench using the above-mentioned vacuum chuck, comprising:

[0016] A workbench base is axially arranged and has a certain length.

[0017] A plurality of vacuum chucks are arranged on the workbench base, and the axial avoiding slots on the plurality of vacuum chucks are aligned and can be connected in a straight line.

[0018] Preferably, the upper part of the adsorption block of the vacuum chuck arranged near the beginning and / or end of the workbench base is provided with an axial avoiding slot and a transverse avoiding slot.

[0019] Preferably, the side of the workbench base is provided with a lifting material supporting mechanism, which includes a lifting plate arranged axially and having a certain length, and the lifting plate is installed on the workbench base through a lifting guide unit and a lifting driving unit, and the lifting plate can be raised to make its material supporting working surface higher than the adsorption working surface of the vacuum adsorption disc, or can be lowered to make its material supporting working surface lower than the adsorption working surface of the vacuum adsorption disc.

[0020] Compared with the prior art, the vacuum chuck provided in the application can support and fix the workpiece by being installed on a workbench base; the workbench provided in the application can stably support and fix the narrow board with a width of 90-290 cm.

[0021] Further, by arranging the lifting material supporting mechanism, when the workbench has two groups, before feeding, the pair of lifting plates is lifted to make the material supporting surface higher than the suction surface of the vacuum suction disc, so that the lifting plate is used as the supporting surface of the board or plate, and the position of the board or plate on the supporting surface can be adjusted; after the position is determined, the pair of lifting plates is lowered to make the material supporting surface lower than the suction surface of the vacuum suction disc, so that the board or plate can be fixed by suction. This scheme can avoid abrasion of the suction block or the sealing protection ring when the position of the workpiece is adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Figure 1 A structural schematic diagram of the vacuum chuck provided in Embodiment 1 of the present application.

[0024] Figure 2 A structural schematic diagram of the vacuum box provided in Embodiment 1 of the present application.

[0025] Figure 3 A structural schematic diagram of the vacuum chuck provided in Embodiment 2 of the present application.

[0026] Figure 4 A structural schematic diagram of the vacuum chuck provided in Embodiment 3 of the present application.

[0027] Figure 5 A structural schematic diagram of the workbench provided in Embodiments 4-7 of the present application.

[0028] Figure 6 Another angle of the structural schematic diagram of the workbench provided in Embodiments 4-7 of the present application.

[0029] Figure 7 A structural schematic diagram of Figure 6 A local enlarged view of A in FIG. 8. DETAILED DESCRIPTION

[0030] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example

[0031] Reference Figure 1 , 2 The vacuum suction cup 5 shown includes a vacuum box 1 and an adsorption block 2.

[0032] Vacuum box 1 has a top opening 11 and a side opening 12, and is sealed except for the top opening 11 and the side opening 12. For example, vacuum box 1 is a rectangular and sealed box with an internal cavity. The top surface and side surface of vacuum box 1 have top opening 11 and side opening 12 respectively to connect the internal vacuum cavity to external components, such as vacuum pipelines and vacuum air sources. In this embodiment, the top surface of vacuum box 1 has two top openings 11.

[0033] The adsorption block 2 is a rectangular block of a certain thickness, which is fixedly installed on the top surface of the vacuum box 1 by screwing, and has the same cross-sectional shape as the vacuum box 1. In particular, the upper part of the adsorption block 2 is provided with an axial clearance groove 21. The axial clearance groove 21 is a through groove with a width of 3~5cm.

[0034] By creating the axial clearance groove 21, the upper part of the thickness of the adsorption block 2 is divided into a first adsorption section 22 and a second adsorption section 23. The first adsorption section 22 has a through hole 24 penetrating its top surface and the bottom surface of the adsorption block 2, and the second adsorption section 23 also has a through hole 24 penetrating its top surface and the bottom surface of the adsorption block 2. The two through holes 24 are correspondingly arranged with the two top openings 11, so that the through holes 24 communicate with the inner cavity of the vacuum box 1 through the top openings 11.

[0035] Of course, the top surface of the vacuum box 1 can be provided with two sets of top openings 11, each set including multiple (e.g., 3) top openings 11, each corresponding to a perforation 24, so as to accommodate adsorption blocks 2 with different opening positions of the perforation 24.

[0036] Preferably, the top surfaces of the first adsorption part 22 and the second adsorption part 23 are each provided with a sealing protective ring 4 arranged around the periphery of their top surfaces. Example

[0037] Reference Figure 3 As shown, the difference between Example 2 and Example 1 is that the vacuum box 1 and the adsorption block 2 have a longer length. Embodiment

[0038] Referring to Figure 4 As shown in FIG. 3, the difference between Embodiment 3 and Embodiment 1 or 2 is that the upper part of the suction block 2 is further provided with a transverse avoiding slot 26, and the axial avoiding slot 21 and the transverse avoiding slot 26 intersect.

[0039] In this embodiment, the axial avoiding slot 21 and the transverse avoiding slot 26 intersect perpendicularly. In other embodiments, the axial avoiding slot 21 and the transverse avoiding slot 26 can also intersect at other non-perpendicular angles, depending on the angle between the two-direction cutting paths.

[0040] The transverse avoiding slot 26 divides the first side suction part 22 into a first side front end suction part 221 and a first side rear end suction part 222, and divides the second side suction part 23 into a second side front end suction part 231 and a second side rear end suction part 232. The first side front end suction part 221, the first side rear end suction part 222, the second side front end suction part 231 and the second side rear end suction part 232 are all provided with through holes 24 penetrating through the top surface and the bottom surface of the suction block 2. Embodiment

[0041] Referring to Figure 5 , 6 As shown in FIG. 4, the workbench includes a workbench base 3 and a plurality of vacuum suction cups 5 as described in Embodiment 1 and / or Embodiment 2.

[0042] The workbench base 3 can be any one of the prior art, which is axially arranged and has a certain length.

[0043] The plurality of vacuum suction cups 5 are fixedly arranged through the workbench base 3, for example, are screwedly mounted on the workbench base 3. The axial avoiding slots 21 on the plurality of vacuum suction cups 5 are aligned and can be connected into a straight line. The plurality of vacuum suction cups 5 are respectively connected with the vacuum air source through the side part openings 12, for example, through any one of the prior art modes such as vacuum air pipes, electromagnetic valves, etc.

[0044] The workbench of this embodiment can be independently matched with the machining center of the prior art, and is suitable for supporting and fixing the narrow strips to realize the splitting machining of the narrow strips.

[0045] In some preferred embodiments, a track can be installed on the surface of the workbench base 3, and a sliding block, an independent motor and a drag chain are installed on the bottom surface of the vacuum suction cup 5, so that the vacuum suction cup 5 can move along the axial direction to adapt to narrow strips of different lengths. The motor is electrically connected with the control system of the machining center, so that the position of the vacuum suction cup 5 can be controlled through the main control panel of the machining center. Embodiment

[0046] Referring to Figure 5 ,6 As shown, the worktable includes a worktable base 3 and a plurality of vacuum chucks 5 as described in Embodiment 1 and / or Embodiment 2.

[0047] Multiple vacuum suction cups 5 are fixedly mounted on a worktable base 3, for example, by screwing them into the worktable base 3. The axial clearance grooves 21 on the multiple vacuum suction cups 5 are aligned and can be connected in a straight line. The multiple vacuum suction cups 5 are connected to a vacuum source through side openings 12, for example, through a vacuum pipe, a solenoid valve, or any other existing technology.

[0048] Specifically, a vacuum suction cup 5', as provided in Embodiment 3, is provided near the end of the worktable base 3 to avoid the sawing path of the transverse cutting tool. Example

[0049] Reference Figure 5 , 6 As shown, the difference between this embodiment and embodiment 5 is that the worktable can be installed on the machining center base and cooperate with the existing movable worktable. The movable worktable is equipped with multiple general vacuum suction cups; however, specifically, one of the general vacuum suction cups aligned with vacuum suction cup 5' on the movable worktable should have a transverse clearance groove.

[0050] Of course, the two sets of workbenches can also be used together. Example

[0051] Reference Figure 5 , 6 As shown, the difference between this embodiment and embodiment 6 is that a lifting material support mechanism 6 is provided on the side of the workbench base 3. The lifting material support mechanism 6 includes a lifting plate 61 with a certain length arranged axially. The lifting plate 61 is installed on the workbench base 3 through a lifting guide unit 62 and a lifting drive unit 63. The lifting plate 61 can rise so that its material support working surface is higher than the adsorption working surface of the vacuum adsorption plate 5, or it can fall so that its material support working surface is lower than the adsorption working surface of the vacuum adsorption plate 5.

[0052] Specifically, refer to Figure 7 As shown, the lifting guide unit 62 includes a horizontal shaft 621 screwed and mounted on the workbench base 3. The bottom surface of the lifting plate 61 is integrally formed with an extension plate 622. A guide groove 623 is provided on the extension plate 622. The horizontal shaft 621 is inserted into the guide groove 623 to guide and restrict the lifting of the lifting plate 61.

[0053] The lifting driving unit 63 comprises a mounting base 631 mounted on the workbench base 3 by screwing and an air rod 632 fixed on the mounting base 631 by screwing, the output end of the air rod 632 is pivoted to the bottom surface of the lifting plate 61, the freedom thereof is limited to small rotation in the plane where the lifting plate 61 is located, so as to use the work of the plurality of lifting driving units 63 asynchronously.

[0054] If the workbench is used in cooperation with the movable workbench, the lifting material supporting mechanism 6 should be arranged on the side of the movable workbench base; if a pair of workbenches are used in cooperation, the pair of workbenches should both have the lifting material supporting mechanism 6.

[0055] The above description is for illustration and not for limitation. Many implementations and many applications other than the examples provided would be apparent to those skilled in the art from this description. The scope of the present teachings should therefore not be determined with reference to the above description, but instead should be determined with reference to the appended claims along with their full scope of equivalents. For purposes of completeness, all articles and references, including publications, patents, and patent documents, are incorporated herein by reference in their entirety. Nothing herein is to be construed as a disclaimer of any subject matter not expressly recited in the foregoing description or claims. Applicant reserves the right to make any subject matter of the present disclosure a part of the disclosure, whether or not it is recited in the foregoing description or claims.

Claims

1. A vacuum chuck, characterized by The vacuum box (1) is provided with a top opening (11) and a side opening (12), and is closed except for the top opening (11) and the side opening (12). The upper part of the adsorption block (2) is provided with an axial avoiding groove (21), which divides the upper part of the adsorption block (2) into a first side adsorption part (22) and a second side adsorption part (23). The first side adsorption part (22) and the second side adsorption part (23) are both provided with a through hole (24) penetrating through the top surface and the bottom surface of the adsorption block (2), and the through hole (24) is communicated with the inner cavity of the vacuum box (1) through the top opening (11). The width of the axial avoiding groove (21) is 3-5 cm.

2. The vacuum chuck according to claim 1, characterized in that The width of the first side adsorption part (22) is greater than that of the second side adsorption part (23).

3. The vacuum chuck according to claim 1, characterized in that The upper part of the adsorption block (2) is also provided with a transverse avoiding groove (26), and the axial avoiding groove (21) and the transverse avoiding groove (26) intersect.

4. The vacuum chuck of claim 1, wherein The axial avoiding groove (21) and the transverse avoiding groove (26) intersect perpendicularly.

5. The vacuum chuck of claim 4, wherein The transverse avoiding groove (26) divides the first side adsorption part (22) into a first side front end adsorption part (221) and a first side rear end adsorption part (222), and divides the second side adsorption part (23) into a second side front end adsorption part (231) and a second side rear end adsorption part (232), and the first side front end adsorption part (221), the first side rear end adsorption part (222), the second side front end adsorption part (231) and the second side rear end adsorption part (232) are all provided with the through hole (24) penetrating through the top surface and the bottom surface of the adsorption block (2).

6. The vacuum chuck according to claim 4 or 5, characterized in that The top surface of the first side adsorption part (22) and the second side adsorption part (23) is provided with a sealing protection ring (4) arranged around the top surface.

7. The vacuum chuck of claim 1, wherein The workbench base (3) is axially arranged and has a certain length.

8. A worktable utilizing the vacuum chuck according to claim 1, characterized by A plurality of vacuum suction cups (5) are arranged on the workbench base (3), and the axial avoiding grooves (21) on the plurality of vacuum suction cups (5) are aligned and can be connected in a straight line. The upper part of the adsorption block (2) of the vacuum suction cup (5) arranged near the beginning and / or end of the workbench base (3) is provided with an axial avoiding groove (21) and a transverse avoiding groove (26). The side of the workbench base (3) is provided with a lifting material supporting mechanism (6), which includes a lifting plate (61) arranged axially and having a certain length, and the lifting plate (61) is installed on the workbench base (3) through a lifting guide unit (62) and a lifting driving unit (63).

9. The worktable of claim 8, wherein, ​ 10. The worktable of claim 8, wherein, ​

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