A quick-change tray device

Abstract

This invention discloses a quick-change tray device for cooperating with a part positioning base. The workpiece is clamped by the part positioning base, and the bottom of the workpiece is connected to the quick-change tray device through a connecting pipe penetrating the part positioning base. It consists of a worktable and a zero-point positioning base. The worktable includes: a worktable base, a worktable cover, a plurality of clamping positioning rings disposed below the worktable base, an upper connector cover and a one-way valve, and a vacuum cover disposed above the worktable cover and cooperating with the upper connector cover. The zero-point positioning base includes: a zero-point positioning base base, a pipe connector disposed below the zero-point positioning base base, and a clamping mechanism disposed above the zero-point positioning base base and disposed within the clamping positioning rings, a vacuum quick-change connector, and a lower pressure connector cover. This invention achieves micron-level positioning accuracy by using the annular groove on the inner side of the clamping positioning ring to cooperate with the movable protrusion of the clamping mechanism; and by using a one-way valve and a vacuum quick-connect connector to be connected under pressure, the workpiece on the worktable can be vacuum adsorbed. After the worktable is separated from the zero-point positioning base, the one-way valve has a good pressure holding effect, so that the workpiece has good accuracy retention on the worktable.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, specifically, to a quick-change pallet device. Background Technology

[0002] Pallets are a common piece of equipment in the machinery industry, primarily used for handling workpieces, especially when the workpiece surface precision and quality requirements are high and direct contact is not permitted. Pallets are also an effective means of efficient operation and process flow in most semi-automated and automated production lines. However, for workpieces requiring multiple processing steps and handling, the workpiece often experiences vibration or skew on the pallet, causing a deviation between the actual and theoretical processing references, which significantly impacts the machining accuracy.

[0003] To maintain the positional accuracy of workpieces on the pallet, mechanical structures are typically added to the pallet. However, this method has poor versatility for workpieces of different sizes and types, and scratches are easily caused on parts requiring high surface precision. Adding an in-situ detection mechanism to the processing equipment is another approach, but this involves complex procedures, increased costs, and extended overall processing time. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a quick-change pallet device to keep the workpiece from shifting on the pallet device and improve the processing accuracy.

[0005] The present invention solves the above problems through the following technical solution:

[0006] A quick-change pallet device is used to cooperate with a part positioning base to lift the workpiece; the workpiece is clamped by the part positioning base and the bottom of the workpiece is connected to the quick-change pallet device through a connecting tube passing through the part positioning base.

[0007] The quick-change tray device consists of a worktable and a zero-point positioning base. The worktable includes: a worktable base, a worktable cover, several clamping positioning rings disposed below the worktable base, an upper connector cover and a one-way valve, and a vacuum cover disposed above the worktable cover and cooperating with the upper connector cover. The worktable cover is closed on top of the worktable base, and the one-way valve is disposed through the upper connector cover and the vacuum cover.

[0008] The zero-point positioning base includes: a zero-point positioning base body, a pipe connector located below the zero-point positioning base body, a clamping mechanism located above the zero-point positioning base body and inside the clamping positioning ring, a vacuum quick-change connector, and a pressure connector cover. The vacuum quick-change connector is installed through the pressure connector cover. The upper end of the vacuum quick-change connector is connected to a one-way valve, and the lower end is connected to the pipe connector.

[0009] As a further improvement, a number of first circular protrusions are evenly arranged on the workbench base, and clamping positioning rings are installed inside the first circular protrusions.

[0010] The zero-point positioning base base is evenly arranged with a number of second circular protrusions corresponding to the first circular protrusion, and a clamping mechanism is provided on the second circular protrusions.

[0011] When the worktable is placed on the zero-point positioning base, the clamping positioning ring is sleeved outside the clamping mechanism, and the clamping mechanism is activated, limiting the clamping positioning ring. The worktable bears the workpiece pressure, which squeezes the vacuum cover and the one-way valve that runs through it, so that the one-way valve connects to the vacuum quick-change connector. The other end of the vacuum quick-change connector is connected to the air pump through the pipe connector, so that the air pump-vacuum quick-change connector-one-way valve-connecting pipe-workpiece are connected in sequence to achieve the adsorption of the workpiece. When the worktable is separated from the zero-point positioning base, the one-way valve plays a pressure-maintaining role.

[0012] As a further improvement, the clamping positioning ring is bolted to the first circular boss.

[0013] As a further improvement, the inner side of the clamping positioning ring is provided with an annular groove, and the clamping mechanism is provided with a corresponding retractable movable protrusion. The annular groove and the movable protrusion cooperate to fix and position the worktable and the zero-point positioning base.

[0014] As a further improvement, the clamping mechanism is a columnar structure with a diameter decreasing from top to bottom. Several movable protrusions are evenly distributed on the outer periphery of the clamping mechanism and can slide up and down along the outer periphery slope of the clamping mechanism, so as to realize the inward and outward expansion and contraction of the movable protrusions by the inclination of the outer periphery slope.

[0015] As a further improvement, the extension and retraction of the movable protrusion is controlled by a solenoid valve.

[0016] As a further improvement, the clamping positioning ring and the clamping mechanism are set to no less than three, and they correspond one-to-one.

[0017] As a further improvement, four clamping positioning rings and four clamping mechanisms are provided.

[0018] As a further improvement, the one-way valve and the vacuum quick-connect fitting are each provided in at least two units, and they correspond one-to-one.

[0019] As a further improvement, the connecting pipe is located outside the one-way valve inside the vacuum cover to connect the one-way valve to the connecting pipe.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] (1) The clamping positioning ring of the present invention has an annular groove on the inner side, and the clamping mechanism has a movable protrusion at the corresponding position. Several clamping positioning rings cooperate with the clamping mechanism to achieve micron-level positioning accuracy.

[0022] (2) The present invention uses a one-way valve and a vacuum quick-change connector. When the worktable and the part positioning base are engaged, the vacuum quick-change connector is compressed and connected to the one-way valve, which can perform vacuum adsorption treatment on the workpiece on the worktable. After the worktable and the zero-point positioning base are separated, the one-way valve has a good pressure holding effect, so that the workpiece has good precision retention on the worktable.

[0023] (3) The movable protrusion of the clamping mechanism of the present invention can be extended and retracted by a solenoid valve, which makes it easy to achieve automated operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the cooperation between a quick-change pallet device, a parts positioning base, and a workpiece according to the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of a quick-change tray device according to the present invention;

[0026] Figure 3 This is a bottom view of the worktable of the present invention;

[0027] Figure 4 This is a top view of the worktable of the present invention;

[0028] Figure 5 This is a side view of the zero-point positioning base of the present invention;

[0029] Figure 6 This is a top view of the zero-point positioning base of the present invention.

[0030] Figure label:

[0031] 1. Workbench; 2. Zero-point positioning base; 3. Workbench base; 4. Clamping positioning ring; 5. Upper connector cover; 6. One-way valve; 7. Vacuum cover; 8. Pipe connector; 9. Clamping mechanism; 10. Vacuum quick-change connector; 11. Lower pressure connector cover; 12. Zero-point positioning base base; 13. Movable protrusion; 14. Part positioning base; 15. Workpiece; 16. Connecting pipe. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0037] The following will combine Figure 1-6 This application provides a detailed description of a quick-change tray device according to its embodiments. It is worth noting that the following embodiments are merely illustrative of this application and do not constitute a limitation thereof.

[0038] Example

[0039] Combined with appendix Figure 1-6As shown, a quick-change pallet device is used to cooperate with the part positioning base 14 to lift the workpiece 15; the workpiece is clamped by the part positioning base and the bottom of the workpiece is connected to the quick-change pallet device through the connecting pipe 16 that passes through the part positioning base.

[0040] The quick-change pallet device consists of a worktable 1, a zero-point positioning base 2, etc. The worktable 1 includes: a worktable base 3, a worktable cover, several clamping and positioning rings 4 located below the worktable base, an upper connector cover 5 and a one-way valve 6, and a vacuum cover 7 located above the worktable cover and cooperating with the upper connector cover 5. The worktable base 3 is covered by the worktable cover, the vacuum cover 7 is located on the worktable cover, and the one-way valve 6 passes through the upper connector cover 5 and the vacuum cover 7.

[0041] The zero-point positioning base 2 includes: a zero-point positioning base body 12, a pipe connector 8 disposed below the zero-point positioning base body 12, and a clamping mechanism 9 disposed above the zero-point positioning base body 12 and disposed within the clamping positioning ring 4, a vacuum quick-change connector 10, and a pressure connector cover 11. The vacuum quick-change connector 10 is disposed through the pressure connector cover 11. The upper end of the vacuum quick-change connector 10 is connected to the one-way valve 6, and the lower end is connected to the pipe connector 8.

[0042] Specifically, several circular bosses are evenly arranged on the workbench base 3. Each of the circular bosses is fitted with a clamping positioning ring 4 by bolts, and the clamping positioning ring has a certain degree of freedom in the circumferential direction. The clamping positioning ring 4 is sleeved on the clamping mechanism 9 above the zero-point positioning base 2. The clamping positioning ring 4 cooperates with the clamping mechanism 9 to limit the installation of the clamping positioning ring 4. A vacuum quick-connector 10 is mounted on the zero-point positioning base 2 via a pressure connector cover 11. The vacuum quick-connector 10 works in conjunction with the one-way valve 6 of the worktable 1. When the worktable 1 is placed on the zero-point positioning base 2, the clamping mechanism 9 is activated, limiting the clamping positioning ring 4. The worktable 1 bears the workpiece pressure, which squeezes the vacuum cover 7 and the one-way valve 6 that runs through it. The one-way valve 6 compresses the vacuum quick-connector 10, allowing the one-way valve 6 to connect with the vacuum quick-connector 10. The other end of the vacuum quick-connector 10 is connected to a pipe connector 8, which can connect the pipe connector 8 on the lower side of the zero-point positioning base 2 to an air pump for vacuum treatment. The workpiece is then adsorbed by sequentially connecting the air pump, vacuum quick-connector 10, one-way valve 6, connecting pipe, and workpiece. When the worktable 1 is separated from the zero-point positioning base 2, the presence of the one-way valve 6 can maintain pressure.

[0043] In an optional embodiment, four circular protrusions are evenly distributed around the circumference of the workbench base 3 of the workbench 1 and the zero-point positioning base base 12 of the zero-point positioning base 2, corresponding one-to-one. The first circular protrusion on the workbench base 3 is equipped with a clamping positioning ring 4, and the second circular protrusion on the zero-point positioning base base 12 is equipped with a clamping mechanism 9.

[0044] Preferably, the clamping positioning ring 4 has an annular groove on its inner side, and the clamping mechanism 9 has a retractable movable protrusion 13 at the corresponding position, which can extend and retract. When the worktable 1 is placed on the zero-point positioning base 2, the movable protrusion 13 on the clamping mechanism 9 extends and engages with the annular groove inside the clamping positioning ring 4, thereby fixing and positioning the worktable 1 and the zero-point positioning base 2 with a positioning accuracy of micrometer level. Optionally, the clamping mechanism 9 can be controlled by a solenoid valve to extend and retract, which is beneficial for automating the positioning and clamping process of this quick-change tray device.

[0045] Furthermore, the vacuum quick-connector 10 on the zero-point positioning base 2 has telescopic properties. When the vacuum quick-connector 10 is compressed, it will connect with the outside world, and when it returns to its original state, it will be isolated from the outside world.

[0046] In this embodiment, the clamping mechanism 9 is a columnar structure with a diameter decreasing sequentially from top to bottom, and several movable protrusions 13 are evenly distributed on the outer periphery of the clamping mechanism 9. These protrusions can slide up and down along the inclined surface of the outer periphery of the clamping mechanism 9, allowing for inward and outward expansion and contraction of the movable protrusions 13 through the inclination of the inclined surface itself. When the annular groove on the inner side of the clamping positioning ring 4 engages with the movable protrusion 13 of the clamping mechanism 9, the movable protrusion 13 slides downward along the inclined surface of the outer periphery of the clamping mechanism 9, allowing the vacuum quick-connect coupling 10 to engage with the one-way valve 6. That is, after the clamping mechanism 9 takes effect, the vacuum quick-connect coupling 10 is compressed and connected to the one-way valve 6. The zero-point positioning base 2 is connected to the air pump through the pipe connector 8 for vacuuming, causing the workpiece to adhere to the surface of the worktable. After the worktable 1 separates from the zero-point positioning base 2, the one-way valve 6 prevents air from entering, maintaining pressure and ensuring that the workpiece remains adhered to the surface of the worktable 1 during movement.

[0047] In another optional embodiment, there are at least three clamping positioning rings 4 and clamping mechanisms 9, which correspond one-to-one. In this embodiment, there are four clamping positioning rings 4 and four clamping mechanisms 9.

[0048] At least two one-way valves 6 and two vacuum quick-connect couplings 10 are provided, and they correspond one-to-one. In this embodiment, two one-way valves 6 and two vacuum quick-connect couplings 10 are provided, and the connecting pipe is provided outside the one-way valve 6 inside the vacuum cover 7 to connect the one-way valve 6 with the connecting pipe.

[0049] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can devise many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A quick-change tray device, characterized in that, Used to cooperate with the part positioning base to lift the workpiece; the workpiece is clamped by the part positioning base and the bottom of the workpiece is connected to the quick-change pallet device through the connecting tube that passes through the part positioning base. The quick-change tray device consists of a worktable and a zero-point positioning base. The worktable includes: a worktable base, a worktable cover, several clamping positioning rings located below the worktable base, an upper connector cover and a one-way valve, and a vacuum cover located above the worktable cover that cooperates with the upper connector cover. The worktable cover is closed on top of the worktable base, and the one-way valve is installed through the upper connector cover and the vacuum cover. The zero-point positioning base includes: a zero-point positioning base body, a pipe connector disposed below the zero-point positioning base body, a clamping mechanism disposed above the zero-point positioning base body and disposed within a clamping positioning ring, a vacuum quick-change connector, and a lower pressure connector cover. The vacuum quick-change connector is disposed through the lower pressure connector cover. The upper end of the vacuum quick-change connector is connected to a one-way valve, and the lower end is connected to the pipe connector. The workbench base has several first circular protrusions evenly arranged on it, and each first circular protrusion is equipped with a clamping positioning ring. The zero-point positioning base base is evenly arranged with a number of second circular protrusions corresponding to the first circular protrusion, and a clamping mechanism is provided on the second circular protrusions. When the worktable is placed on the zero-point positioning base, the clamping positioning ring is sleeved outside the clamping mechanism, and the clamping mechanism is activated, limiting the clamping positioning ring. The worktable bears the workpiece pressure, which squeezes the vacuum cover and the one-way valve that runs through it, so that the one-way valve connects to the vacuum quick-change connector. The other end of the vacuum quick-change connector is connected to the air pump through the pipe connector, so that the air pump-vacuum quick-change connector-one-way valve-connecting pipe-workpiece are connected in sequence to achieve the adsorption of the workpiece. When the worktable is separated from the zero-point positioning base, the one-way valve plays a pressure-maintaining role.

2. The quick-change pallet device according to claim 1, characterized in that, The clamping and positioning ring is installed inside the first circular boss by bolts.

3. The quick-change pallet device according to claim 1, characterized in that, The clamping positioning ring has an annular groove on its inner side, and the clamping mechanism has a corresponding retractable movable protrusion. The annular groove and the movable protrusion cooperate to fix and position the worktable and the zero-point positioning base.

4. The quick-change pallet device according to claim 3, characterized in that, The extension and retraction of the movable protrusion is controlled by a solenoid valve.

5. A quick-change tray device according to any one of claims 1-4, characterized in that, The clamping positioning rings and clamping mechanisms are configured to be no less than three, and each one corresponds to the other.

6. The quick-change pallet device according to claim 5, characterized in that, The clamping positioning rings and clamping mechanisms are each configured to have four rings.

7. A quick-change tray device according to any one of claims 1-4, characterized in that, The one-way valve and the vacuum quick-connect fitting are each provided in at least two pairs, and they correspond one-to-one.

8. The quick-change pallet device according to claim 7, characterized in that, The connecting pipe is located outside the one-way valve inside the vacuum cover to connect the one-way valve to the connecting pipe.

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