Negative pressure assembly

Abstract

The utility model relates to the technical field of negative pressure adsorption, in particular to a negative pressure assembly, which aims to reduce gas supply cost and work noise and comprises a gas supply part, a gas storage part and a gas absorption part, the vacuum generating piece is provided with a gas through hole and a negative pressure hole communicated with the gas through hole, and the gas through hole comprises a gas inlet and a gas outlet which are located in the two opposite sides of the negative pressure hole; the gas guide piece is communicated with the gas inlet and the gas supply piece respectively, and controls gas in the gas supply piece to enter the gas through hole from the gas inlet and flow out of the gas through hole from the gas outlet, so that negative pressure is formed in the negative pressure hole; the pressure maintaining piece is communicated with the negative pressure hole and is used for maintaining negative pressure formed in the negative pressure hole; the adsorption part is communicated with the pressure maintaining part and adsorbs a workpiece through negative pressure maintained in the pressure maintaining part; the controller is electrically connected with the air guide part and the pressure maintaining part, when the negative pressure in the pressure maintaining part reaches a preset negative pressure value, the controller controls the pressure maintaining part to be closed and controls the air guide part to be closed, and when the negative pressure in the pressure maintaining part is smaller than the preset negative pressure value, the controller controls the air guide part to be started and controls the pressure maintaining part to be started.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure adsorption technology, specifically to a negative pressure component. Background Technology

[0002] Negative pressure adsorption is widely used in industries such as machinery, electronics, packaging, and printing to adsorb workpieces made of fragile, soft, thin-walled, or curved materials. The core component of negative pressure adsorption is the vacuum generator. Specifically, the vacuum generator is a highly efficient, clean, and small vacuum device that uses a positive pressure gas source to generate negative pressure. The current negative pressure adsorption process is roughly as follows: first, gas is introduced into the vacuum generator to create negative pressure; then, the workpiece is adsorbed through the negative pressure created within the vacuum generator; finally, the workpiece is moved to the target position and the gas supply to the vacuum generator is stopped to release the workpiece. In other words, current negative pressure adsorption achieves the adsorption and release of the workpiece through brief gas supply and interruption.

[0003] However, when the workpiece is adsorbed for a long time, it is necessary to continuously supply air to the vacuum generator, which results in long-lasting air supply noise, large gas consumption, and high cost. Utility Model Content

[0004] In view of the above, it is necessary to provide a negative pressure component to reduce gas supply costs and operating noise.

[0005] This utility model embodiment provides a negative pressure component, including:

[0006] Gas supply components, gas storage;

[0007] A vacuum generator has a gas through hole and a negative pressure hole that connects to the gas through hole. The gas through hole has an inlet and an outlet located on opposite sides of the negative pressure hole.

[0008] A gas guide is connected to the air inlet and the air supply component respectively. The gas guide controls the gas in the air supply component to enter the gas passage through the air inlet and flow out through the air outlet, so as to form a negative pressure in the negative pressure hole.

[0009] A pressure-holding component is connected to the negative pressure hole to maintain the negative pressure formed inside the negative pressure hole;

[0010] An adsorption element, connected to the pressure-holding element, is used to adsorb the workpiece by means of a negative pressure maintained within the pressure-holding element; and

[0011] The controller is electrically connected to the air guide and the pressure holding component respectively. When the negative pressure in the pressure holding component reaches a preset negative pressure value, the controller controls the pressure holding component to close to maintain pressure and controls the air guide to close. When the negative pressure in the pressure holding component is less than the preset negative pressure value, the controller controls the air guide to start and controls the pressure holding component to open.

[0012] In some embodiments, the gas guide includes a control gas and an inlet pipe, the two ends of the inlet pipe being connected to the control gas and the inlet respectively, the control gas being connected to the gas supply component to control the gas in the gas supply component to be introduced into the inlet pipe, the pressure holding component includes a pressure holding body and an outlet pipe, the two ends of the outlet pipe being connected to the negative pressure hole and the pressure holding body respectively, the pressure holding body maintaining the negative pressure entering from the vacuum generator through the outlet pipe.

[0013] In some embodiments, the inner diameter of the adsorption element, the inner diameter of the air inlet pipe, and the inner diameter of the air outlet pipe are all equal.

[0014] In some embodiments, the controlled gas is a gas solenoid valve, and the pressure-holding body is a pressure-holding control valve.

[0015] In some embodiments, the line connecting the center of the air inlet and the center of the air outlet is perpendicular to the central axis of the negative pressure hole.

[0016] In some embodiments, the distance between the central axis of the negative pressure hole and the air inlet is greater than the distance between the central axis of the negative pressure hole and the air outlet.

[0017] In some embodiments, the inner diameter of the air outlet is larger than the inner diameter of the air inlet.

[0018] In some embodiments, the negative pressure component further includes:

[0019] A silencer is threadedly connected to one end of the air outlet of the vacuum generator.

[0020] In some embodiments, the negative pressure component further includes:

[0021] The silencer is connected to one end of the air outlet of the vacuum generator and is an integral part of the vacuum generator.

[0022] In some embodiments, the negative pressure component further includes:

[0023] The display is connected to the pressure-holding component to display the negative pressure value within the pressure-holding component.

[0024] In the aforementioned negative pressure assembly, the negative pressure generated within the negative pressure orifice of the vacuum generator is transmitted to the pressure-holding component. When the negative pressure within the pressure-holding component reaches a preset negative pressure value, the controller controls the pressure-holding component to close and the air guide component to shut off. The pressure-holding component can maintain the negative pressure within the negative pressure orifice for a certain period of time. When the negative pressure within the pressure-holding component falls below the preset negative pressure value, the controller controls the air guide component to start and the pressure-holding component to open, allowing the negative pressure within the negative pressure orifice to reform and be transmitted to the pressure-holding component. Therefore, the aforementioned negative pressure assembly maintains the negative pressure within the negative pressure orifice for a certain period of time through the pressure-holding component. During this period, the air guide component stops working, enabling the negative pressure assembly to reduce the gas supply time while adsorbing the workpiece for an extended period, thereby reducing gas costs and operating noise. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the negative pressure component in an embodiment of the present invention.

[0026] Figure 2 for Figure 1 The diagram shows the structure of the vacuum generator in the negative pressure assembly.

[0027] Figure 3 for Figure 1 Another angle view of the vacuum generator in the negative pressure assembly shown.

[0028] Explanation of main component symbols: negative pressure assembly 100, vacuum generator 110, gas through hole 110a, negative pressure hole 110b, air inlet 110c, air outlet 110d, threaded section 110e, air guide 120, gas control 121, air inlet pipe 122, pressure holding component 130, pressure holding body 131, air outlet pipe 132, adsorption component 140, silencer 150, display meter 160, meter body 161, pressure measuring tube 162. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. In the description of this utility model, it should be noted that "multiple" means two or more, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The embodiments of this case will be described in detail below with reference to the accompanying drawings.

[0032] Please see Figure 1 This utility model provides a negative pressure component 100 to adsorb workpieces by negative pressure. The workpieces can be made of fragile, soft, thin-walled, curved, or other materials. The negative pressure component 100 includes a gas supply component (not shown) for storing gas, a vacuum generator 110, a gas guide component 120 connected to the vacuum generator 110 and the gas supply component, a pressure holding component 130 connected to the vacuum generator 110, an adsorption component 140 connected to the pressure holding component 130, a controller (not shown) electrically connected to the gas guide component 120 and the pressure holding component 130, a silencer 150 connected to the vacuum generator 110, and a display 160 connected to the pressure holding component 130.

[0033] Please see Figure 2 and Figure 3 The vacuum generator 110 has a circular gas passage 110a and a circular negative pressure hole 110b connected to the gas passage 110a. The two ends of the gas passage 110a are an inlet 110c and an outlet 110d, respectively. The negative pressure hole 110b is connected to the gas passage 110a and located between the inlet 110c and the outlet 110d. Gas can be introduced into the gas passage 110a through the inlet 110c and flow out through the outlet 110d, thus creating a negative pressure within the negative pressure hole 110b.

[0034] It should be noted that the number of negative pressure holes 110b can be one, two, or more, and the specific number of negative pressure holes 110b can be set based on the required negative pressure of the vacuum generator 110. In addition, the cross-section of the gas through hole 110a and the cross-section of the negative pressure hole 110b can both be square or a combination of round and square.

[0035] In this embodiment, there is one negative pressure hole 110b, the inner diameter of the air inlet 110c is smaller than the inner diameter of the air outlet 110d, and the outer side of the air outlet 110d of the vacuum generator 110 is provided with a threaded section 110e.

[0036] Please see Figure 2 The line a connecting the center of the air inlet 110c and the center of the air outlet 110d is perpendicular to the central axis b of the negative pressure hole 110b. In this embodiment, both the gas through hole 110a and the negative pressure hole 110b are linear structures, which facilitates the stable flow of gas introduced from the air inlet 110c, so as to form a stable negative pressure in the negative pressure hole 110b.

[0037] Understandably, in other embodiments, both the gas through-hole 110a and the negative pressure hole 110b can be bent structures.

[0038] Please see Figure 2 In this embodiment, the distance between the central axis b of the negative pressure hole 110b and the air inlet 110c is greater than the distance between the central axis b of the negative pressure hole 110b and the air outlet 110d. This is beneficial for the gas entering the gas passage 110a from the air inlet 110c to form a stable flow velocity at the connection between the negative pressure hole 110b and the gas passage 110a, so as to form a stable negative pressure in the negative pressure hole 110b.

[0039] Please see Figure 2 and Figure 3 In this embodiment, the inner diameter of the outlet 110d is larger than the inner diameter of the inlet 110c, which increases the flow cross-section of the gas entering from the inlet 110c, which helps to reduce the noise of the gas flowing out from the outlet 110d.

[0040] Please see Figure 1 and Figure 2 The gas guide 120 includes a control gas 121 and a cylindrical air inlet pipe 122. The two ends of the air inlet pipe 122 are connected to the control gas 121 and an air inlet 110c, respectively. The control gas 121 is connected to a gas supply component to control the gas in the gas supply component to be introduced into the air inlet 110c through the air inlet pipe 122. The air inlet pipe 122 has a flexible structure to facilitate adjustment of the position of the control gas 121.

[0041] In this embodiment, the control gas 121 is a gas solenoid valve, and the two ends of the air inlet pipe 122 are connected to the control gas 121 and the vacuum generator 110 by plugging in.

[0042] Please continue reading Figure 1 and Figure 2 The pressure-holding component 130 includes a pressure-holding body 131 and a cylindrical vent pipe 132. The two ends of the vent pipe 132 are connected to the pressure-holding body 131 and the vent port 110d, respectively. Negative pressure in the negative pressure hole 110b enters the pressure-holding body 131 through the vent pipe 132, and the pressure-holding body 131 can maintain the negative pressure introduced from the vent pipe 132 for a certain period of time. The vent pipe 132 has a flexible structure to facilitate adjustment of the position of the pressure-holding body 131.

[0043] It should be noted that the pressure-holding body 131 can maintain the negative pressure introduced from the exhaust pipe 132 for a certain period of time, which means that within a certain period of time, the negative pressure introduced into the pressure-holding body 131 from the exhaust pipe 132 is maintained within a certain range, and the pressure-holding body 131 can reduce the rate of change of the negative pressure introduced from the exhaust pipe 132.

[0044] In this embodiment, the pressure holding body 131 is a pressure holding control valve, and the two ends of the air outlet pipe 132 are connected to the pressure holding body 131 and the vacuum generator 110 by plugging in, and the inner diameter of the air outlet pipe 132 is equal to the inner diameter of the air inlet pipe 122.

[0045] Please see Figure 1 The adsorption element 140 is cylindrical. One end of the adsorption element 140 is connected to the pressure holding body 131 of the pressure holding element 130 by plugging in. The other end of the adsorption element 140 adsorbs the workpiece through the negative pressure maintained in the pressure holding body 131.

[0046] In this embodiment, the adsorption element 140 is a flexible structure to facilitate adjustment of the angle of the adsorption element 140, thereby increasing the adsorption range of the adsorption element 140.

[0047] In this embodiment, the controller can be a processor with calculation and control functions. When the negative pressure inside the pressure-holding body 131 reaches a preset negative pressure value, the controller controls the pressure-holding component 130 to close and the air guide component 120 to close. The pressure-holding body 131 can maintain the negative pressure introduced through the negative pressure hole 110b via the air outlet pipe 132 for a certain period of time. When the negative pressure inside the pressure-holding body 131 is less than the preset negative pressure value, the controller controls the air guide component 120 to start and controls the pressure-holding body 131 to open, so that the negative pressure in the negative pressure hole 110b can be reformed and transmitted to the pressure-holding body 131 via the air outlet pipe 132. The preset negative pressure value can be set based on the workpiece to be adsorbed. The comparison between the negative pressure inside the pressure-holding body 131 and the preset negative pressure value is set in the controller in the form of an execution program, so that the controller automatically compares the negative pressure inside the pressure-holding body 131 with the preset negative pressure value based on the set execution program, so as to control the pressure-holding component 130 and the air guide component 120.

[0048] Please see Figure 1 and Figure 3 In this embodiment, the muffler 150 is threadedly connected to the threaded section 110e of the vacuum generator 110 to reduce the noise when the vacuum generator 110 forms a negative pressure in the negative pressure hole 110b. The threaded connection between the muffler 150 and the vacuum generator 110 facilitates the quick assembly and disassembly of the muffler 150 and the vacuum generator 110.

[0049] In other embodiments, the muffler 150 is connected to one end of the air outlet 110d of the vacuum generator 110, and the muffler 150 and the vacuum generator 110 are an integral structure. Therefore, the integral structure of the muffler 150 and the vacuum generator 110 is beneficial for carrying the negative pressure assembly 100 and reduces the processing difficulty of the negative pressure assembly 100.

[0050] Please see Figure 1 The display meter 160 includes a meter body 161 and a pressure measuring tube 162 with its two ends connected to the meter body 161 and a pressure holding body 131, respectively. The pressure measuring tube 162 introduces the negative pressure inside the pressure holding body 131 to the meter body 161, and the meter body 161 displays the negative pressure value in real time so that the user can easily monitor the negative pressure value inside the pressure holding body 131. In this embodiment, the pressure measuring tube 162 has a flexible structure to facilitate the adjustment of the position of the meter body 161.

[0051] In the aforementioned negative pressure assembly 100, the negative pressure formed in the negative pressure hole 110b of the vacuum generator 110 is transmitted to the pressure holding body 131 via the outlet pipe 132. When the negative pressure in the pressure holding body 131 reaches the preset negative pressure value, the controller controls the pressure holding body 131 to close and controls the control gas 121 to shut off. The pressure holding body 131 can maintain the negative pressure introduced from the negative pressure hole 110b through the outlet pipe 132 for a certain period of time. When the negative pressure in the pressure holding body 131 is less than the preset negative pressure value, the controller controls the control gas 121 to start and controls the pressure holding body 131 to open, so that the negative pressure in the negative pressure hole 110b is re-formed and transmitted to the pressure holding body 131 via the outlet pipe 132. Therefore, the negative pressure component 100 maintains the negative pressure in the negative pressure hole 110b for a certain period of time through the pressure holding component 130. During this period, the air guide component 120 stops working, so that the negative pressure component 100 can reduce the gas supply time while adsorbing the workpiece for a long time, thereby reducing gas cost and working noise.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be incorporated into this invention.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A negative pressure component, characterized in that, include: Gas supply components, gas storage; A vacuum generator has a gas through hole and a negative pressure hole that connects to the gas through hole. The gas through hole has an inlet and an outlet located on opposite sides of the negative pressure hole. A gas guide is connected to the air inlet and the air supply component respectively. The gas guide controls the gas in the air supply component to enter the gas passage through the air inlet and flow out through the air outlet, so as to form a negative pressure in the negative pressure hole; a pressure holding component is connected to the negative pressure hole to maintain the negative pressure formed in the negative pressure hole. An adsorption element, connected to the pressure-holding element, is used to adsorb the workpiece by means of a negative pressure maintained within the pressure-holding element; and The controller is electrically connected to the air guide and the pressure holding component respectively. When the negative pressure in the pressure holding component reaches a preset negative pressure value, the controller controls the pressure holding component to close to maintain pressure and controls the air guide to close. When the negative pressure in the pressure holding component is less than the preset negative pressure value, the controller controls the air guide to start and controls the pressure holding component to open.

2. The negative pressure component as described in claim 1, characterized in that, The gas guiding component includes a control gas and an inlet pipe. The two ends of the inlet pipe are respectively connected to the control gas and the inlet. The control gas is connected to the gas supply component to control the gas in the gas supply component to be introduced into the inlet pipe. The pressure holding component includes a pressure holding body and an outlet pipe. The two ends of the outlet pipe are respectively connected to the negative pressure hole and the pressure holding body. The pressure holding body maintains the negative pressure entering from the vacuum generator through the outlet pipe.

3. The negative pressure component as described in claim 2, characterized in that, The inner diameters of the adsorption element, the air inlet pipe, and the air outlet pipe are all equal.

4. The negative pressure component as described in claim 2, characterized in that, The controlled gas is a gas solenoid valve, and the pressure-holding body is a pressure-holding control valve.

5. The negative pressure component as described in claim 1, characterized in that, The line connecting the center of the air inlet and the center of the air outlet is perpendicular to the central axis of the negative pressure hole.

6. The negative pressure component as described in claim 5, characterized in that, The distance between the central axis of the negative pressure hole and the air inlet is greater than the distance between the central axis of the negative pressure hole and the air outlet.

7. The negative pressure component as described in claim 5, characterized in that, The inner diameter of the air outlet is larger than the inner diameter of the air inlet.

8. The negative pressure component as described in claim 1, characterized in that, The negative pressure component also includes: A silencer is threadedly connected to one end of the air outlet of the vacuum generator.

9. The negative pressure component as described in claim 1, characterized in that, The negative pressure component also includes: The silencer is connected to one end of the air outlet of the vacuum generator and is an integral part of the vacuum generator.

10. The negative pressure component as described in claim 1, characterized in that, The negative pressure component also includes: The display is connected to the pressure-holding component to display the negative pressure value within the pressure-holding component.

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