Vacuum on-off control assembly and vacuum jig control equipment

Abstract

The utility model relates to the technical field of machining equipment, and provides a vacuum on-off control assembly and vacuum jig control equipment, and the vacuum on-off control assembly comprises a three-way ball valve, a first gas circuit and a first valve. The three-way ball valve is provided with a first air inlet, a second air inlet and an exhaust port, the exhaust port is used for being communicated with the adsorption end of the vacuum jig, the first air inlet is configured to be communicated with a vacuum air source, and the second air inlet is configured to be communicated with a positive pressure air source. A rotating air cylinder of the three-way ball valve is configured to communicate with a positive pressure air source through a first air path, and a first valve is arranged on the first air path and used for controlling the air inlet and outlet direction of the rotating air cylinder. The first valve is a double-electric-control two-position five-way electromagnetic valve. According to the vacuum on-off control assembly, the rotary air cylinder is communicated with the positive pressure air source through the first air channel, the first valve is arranged on the first air channel so as to control the communication state of the air inlet and the air outlet of the three-way ball valve, control switching of the state of the vacuum jig is achieved, and the structure is simple and compact.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment technology, and in particular to a vacuum on / off control component and a vacuum fixture control device. Background Technology

[0002] In recent years, the market demand for specialized machine tools for processing brittle and hard materials (such as silicon, silicon carbide, quartz, and ceramics) has continued to increase. To improve the processing efficiency of these machine tools, vacuum fixtures are widely used in production. To control the working state of these vacuum fixtures, vacuum on / off control components are typically required. Due to the high cost of raw materials for the workpieces, the reliability of the vacuum on / off control components is crucial. Most existing vacuum on / off control components employ a linear cylinder-driven air path switching structure, which is a relatively complex machined assembly with a large footprint and complex structure. Utility Model Content

[0003] This invention provides a vacuum on / off control component and a vacuum fixture control device to solve the defects of the gas path conversion structure used to control vacuum fixtures in the prior art, which is complex in structure and occupies a large space.

[0004] In a first aspect, this utility model provides a vacuum on / off control component, comprising:

[0005] A three-way ball valve has a first air inlet, a second air inlet, and an exhaust port. The exhaust port is used to connect with the adsorption end of a vacuum fixture. The first air inlet is configured to connect with a vacuum source, and the second air inlet is configured to connect with a positive pressure air source.

[0006] The first air passage and the first valve, wherein the rotary cylinder of the three-way ball valve is configured to be connected to a positive pressure air source through the first air passage, the first valve is provided in the first air passage, and the first valve is used to control the air intake and exhaust direction of the rotary cylinder, so as to control the exhaust port to selectively connect with the first air intake or the second air intake through the rotary cylinder;

[0007] The first valve is a dual-electrically controlled two-position five-way solenoid valve.

[0008] The vacuum on / off control component according to this utility model further includes a second air passage and a second valve. The second air inlet is configured to be connected to a positive pressure air source through the second air passage, and the second valve is disposed in the second air passage.

[0009] According to the vacuum on / off control component of this utility model, the second valve is a two-way direct-acting solenoid valve.

[0010] The vacuum on / off control assembly of this utility model further includes a sensor assembly, a controller, and an alarm. The sensor assembly and the alarm are electrically connected to the controller. The sensor assembly is used to detect the rotation angle information of the rotary cylinder of the three-way ball valve, and the controller is used to control the working state of the alarm according to the rotation angle information.

[0011] According to the vacuum on / off control assembly of this utility model, the sensor assembly includes a photoelectric switch and a baffle; the baffle is disposed on the rotation shaft of the rotary cylinder; when the exhaust port is connected to the first air inlet, the baffle rotates into the optical path of the photoelectric switch.

[0012] The vacuum on / off control assembly according to this utility model also includes a mounting bracket, in which an installation space is formed, and the three-way ball valve and the first valve are fixedly installed in the installation space.

[0013] According to the vacuum on / off control assembly of this utility model, the mounting bracket includes a housing and a mounting plate, the housing has an installation space, the mounting plate is mounted on the side wall of the housing, and the three-way ball valve and the first valve are mounted on the mounting plate.

[0014] According to the vacuum on / off control assembly of this utility model, the mounting plate includes a first mounting plate and a second mounting plate;

[0015] The three-way ball valve is fixedly mounted on the first side of the first mounting plate, the second mounting plate is disposed on the second side of the first mounting plate, and the first valve is mounted on the second mounting plate.

[0016] According to the vacuum on / off control assembly of this utility model, the first mounting plate is provided with a clearance hole, and the rotary cylinder of the three-way ball valve extends to the second side of the first mounting plate through the clearance hole and connects with the first valve.

[0017] Secondly, this utility model also provides a vacuum fixture control device, comprising:

[0018] Positive pressure gas source, vacuum gas source, and vacuum on / off control component as described above;

[0019] The positive pressure air source is connected to the first air passage and the second air inlet respectively; the vacuum air source is connected to the first air inlet.

[0020] This utility model discloses a vacuum on / off control component. By connecting the exhaust port of a three-way ball valve to a vacuum fixture, the first air inlet to a vacuum source, and the second air inlet to a positive pressure source, the valve core of the three-way ball valve can rotate under the drive of a rotary cylinder, selectively connecting the exhaust port to the first and second air inlets. This allows the suction end of the vacuum fixture to switch between positive and negative pressure states, facilitating the suction of workpieces or their removal from the vacuum fixture. Simultaneously, the rotary cylinder is connected to the positive pressure source via a first air path, which includes a first valve to control the air intake of the rotary cylinder, thereby controlling the connection state of the three-way ball valve's exhaust and inlet ports. This achieves control and switching of the vacuum fixture's state. The structure is simple and compact, eliminating the need for complex air path conversion structures and effectively solving the shortcomings of existing air path conversion structures for controlling vacuum fixtures, which are complex and space-consuming. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the vacuum on / off control component provided by this utility model.

[0023] Figure 2 This is a connection principle diagram of the vacuum fixture control device provided by this utility model.

[0024] Figure label:

[0025] 1. Vacuum on / off control assembly;

[0026] 11. Three-way ball valve; 111. First air inlet; 112. Second air inlet; 113. Exhaust port;

[0027] 12. First air passage; 13. First valve; 14. Second air passage; 15. Second valve;

[0028] 16. Sensor assembly; 161. Photoelectric switch; 162. Baffle;

[0029] 17. Mounting bracket; 171. Housing; 172. First mounting plate; 173. Second mounting plate.

[0030] 2. Vacuum fixture control equipment. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] The following is combined with Figures 1-2 This invention describes a vacuum on / off control component.

[0033] like Figure 1 and Figure 2 As shown, this utility model provides a vacuum on / off control component 1, including: a three-way ball valve 11, a first air passage 12, and a first valve 13. The three-way ball valve 11 has a first air inlet 111, a second air inlet 112, and an exhaust port 113. The exhaust port 113 is used to communicate with the adsorption end of a vacuum fixture. The first air inlet 111 is configured to communicate with a vacuum source, and the second air inlet 112 is configured to communicate with a positive pressure air source. The rotary cylinder of the three-way ball valve 11 is configured to communicate with the positive pressure air source through the first air passage 12. The first valve 13 is located in the first air passage 12 and is used to control the air intake and exhaust direction of the rotary cylinder, so that the exhaust port 113 can be selectively connected to either the first air inlet 111 or the second air inlet 112. The first valve 13 is a dual-electrically controlled two-position five-way solenoid valve.

[0034] In this embodiment, it is understood that the three-way ball valve 11 typically has a valve core and a rotary cylinder. The output end of the rotary cylinder is connected to the valve core to drive the valve core to rotate. An air passage is formed inside the valve core. By adjusting the rotation angle of the valve core, the air passage of the valve core can connect the exhaust port 113 and one of the air inlets. The exhaust port 113 is connected to the adsorption end of the vacuum fixture, the first air inlet 111 is connected to a vacuum air source, and the second air inlet 112 is connected to a positive pressure air source. When the exhaust port 113 and the first air inlet 111 are connected, the vacuum air source is connected to the adsorption end of the vacuum fixture through the three-way ball valve 11, providing a vacuum negative pressure environment for the adsorption end of the vacuum fixture, enabling the vacuum fixture to adsorb the workpiece. With the exhaust port 113 and the second air inlet 112 connected, the vacuum source and the adsorption end of the vacuum fixture are disconnected. The positive pressure air source is connected to the adsorption end of the vacuum fixture through the three-way ball valve 11, so that the adsorption end of the vacuum fixture is under positive pressure, making it convenient for the processing personnel to remove the workpiece from the vacuum fixture.

[0035] Meanwhile, by connecting the rotary cylinder of the three-way ball valve 11 to the positive pressure air source through the first air passage 12, and setting the first valve 13 on the first air passage 12 to control the airflow in the first air passage 12, the direction of air intake and exhaust in the rotary cylinder is controlled. Thus, the rotation angle of the valve core is controlled by the rotary cylinder, thereby controlling the exhaust port 113 to selectively connect with the first air inlet 111 or the second air inlet 112, realizing the vacuum on / off control of the vacuum fixture. The structure is simple, convenient and practical.

[0036] Furthermore, by configuring the first valve 13 as a dual-electro-controlled two-position five-way solenoid valve, which has two solenoid coils controlling two different positions of the valve respectively, the valve can be configured to operate. When one coil is energized, it attracts the valve core to move, thereby changing the airflow state. When that coil is de-energized, the valve core does not immediately return to its original position but remains in its current position until the other coil is energized and attracts the valve core to move to the other position. Therefore, in practical applications, the first valve 13 can maintain its operating state before the power failure even after an unexpected power failure, thus avoiding situations where the workpiece moves or even falls due to an unexpected power failure, resulting in better reliability.

[0037] It is understood that in this embodiment, the positive pressure air source connected to the first air passage 12 and the positive pressure air source connected to the second air inlet 112 can be the same air source or independent air sources.

[0038] The vacuum on / off control component 1 of this utility model connects the exhaust port 113 of a three-way ball valve 11 to a vacuum fixture, the first air inlet 111 to a vacuum source, and the second air inlet 112 to a positive pressure source. The valve core of the three-way ball valve 11 can rotate under the drive of a rotary cylinder, allowing the exhaust port 113 to selectively connect with the first air inlet 111 and the second air inlet 112. This enables the suction end of the vacuum fixture to switch between positive and negative pressure states, facilitating the suction of workpieces or their removal from the vacuum fixture. Simultaneously, the rotary cylinder is connected to the positive pressure source via a first air passage 12, which is equipped with a first valve 13 to control the air intake and exhaust direction of the rotary cylinder, thereby controlling the connection state of the three-way ball valve 11's air inlet and exhaust ports. This achieves control and switching of the vacuum fixture's state. The structure is simple and compact, eliminating the need for complex air passage conversion structures and effectively solving the shortcomings of existing air passage conversion structures for controlling vacuum fixtures, which are complex and space-consuming.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the vacuum on / off control assembly 1 also includes a second air passage 14 and a second valve 15. The second air inlet 112 is configured to be connected to a positive pressure air source through the second air passage 14, and the second valve 15 is located in the second air passage 14.

[0040] In this embodiment, a second valve 15 is provided on the second air passage 14 connecting the second air inlet 112 and the positive pressure air source. The second valve 15 can be used to control the opening or closing of the second air passage 14 so that when the second air inlet 112 is connected to the exhaust port 113, the positive pressure environment formed by the positive pressure air source at the adsorption end of the vacuum fixture can be adjusted to meet the different usage needs of the vacuum fixture by the processing personnel.

[0041] Specifically, in some embodiments, the vacuum on / off control component 1 has three operating states: vacuum open, vacuum closed, and vacuum broken. In the vacuum open state, the first air inlet 111 is connected to the exhaust outlet 113, allowing the vacuum source to connect with the vacuum fixture, enabling the vacuum fixture to adsorb the workpiece. In the vacuum closed state, the second air inlet 112 is connected to the exhaust outlet 113, and the second valve 15 closes the second air passage 14, preventing the vacuum fixture from connecting with either the vacuum source or the positive pressure air source. The vacuum closed state is typically used as the initial state when the vacuum on / off control component 1 is started. In the vacuum broken state, the second air inlet 112 is connected to the exhaust outlet 113, and the second valve 15 opens the second air passage 14, connecting the vacuum source and the positive pressure air source, facilitating the removal of the workpiece from the vacuum fixture.

[0042] Optionally, the second valve 15 is a two-way direct-acting solenoid valve. Two-way direct-acting solenoid valves are characterized by simple structure, reliable operation, and fast response speed, in order to control the on / off state of the second air passage 14.

[0043] In some embodiments, such as Figure 1 and Figure 2 As shown, the vacuum on / off control assembly 1 also includes a sensor assembly 16, a controller (not shown in the figure), and an alarm (not shown in the figure). The sensor assembly 16 and the alarm are electrically connected to the controller. The sensor assembly 16 is used to detect the rotation angle information of the rotary cylinder of the three-way ball valve 11, and the controller is used to control the working state of the alarm according to the rotation angle information.

[0044] In this embodiment, by setting a sensor assembly 16 to detect the rotation angle information of the rotary cylinder of the three-way ball valve 11, when controlling the rotary cylinder of the three-way ball valve 11 to rotate so that the first air inlet 111 and the exhaust port 113 are connected, the controller can determine whether the rotary cylinder has rotated to the correct position through the rotation angle information detected by the sensor assembly 16, and control the alarm to remind the processing personnel through lights, sounds and other means, so as to avoid the processing personnel installing the workpiece on the vacuum fixture when the rotary cylinder has not rotated to the correct position or the vacuum fixture has insufficient negative pressure, which would cause the workpiece to move or even fall off due to insufficient suction force of the vacuum fixture.

[0045] Optionally, the sensor assembly 16 can be an encoder, an angle sensor, etc.

[0046] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the sensor assembly 16 includes a photoelectric switch 161 and a baffle 162. The baffle 162 is disposed on the rotation shaft of the rotary cylinder. When the exhaust port 113 is connected to the first air inlet 111, the baffle 162 rotates into the optical path of the photoelectric switch 161.

[0047] In this embodiment, the photoelectric switch 161 is disposed on one side of the rotating shaft of the rotary cylinder. When the rotary cylinder has not yet rotated to the position to connect the first air inlet 111 and the exhaust port 113, the light emitted by the photoelectric switch 161 will not be blocked by the baffle 162 and can generate a corresponding signal to enable the controller to control the alarm to indicate that the first air inlet 111 and the exhaust port 113 are not yet connected. When the first air inlet 111 and the exhaust port 113 are connected, the baffle 162 rotates into the light path of the photoelectric switch 161 and generates reflection, causing the photoelectric switch 161 to emit another signal to the controller, so that the controller controls the alarm to indicate that the first air inlet 111 and the exhaust port 113 are connected, and the workpiece can be installed in the vacuum fixture.

[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, the vacuum on / off control assembly 1 also includes a mounting bracket 17, in which an installation space is formed, and the three-way ball valve 11 and the first valve 13 are fixedly installed in the installation space.

[0049] In this embodiment, the mounting bracket 17 is provided with an installation space for installing the three-way ball valve 11 and the first valve 13, and for supporting and fixing the three-way ball valve 11 and the first valve 13, while also providing protection for the three-way ball valve 11 and the first valve 13. Optionally, the mounting bracket 17 can be a closed structure, enclosing the three-way ball valve 11 and the first valve 13 inside the installation space; or, the mounting bracket 17 can also be a semi-open structure.

[0050] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the mounting bracket 17 includes a housing 171 and a mounting plate. An installation space is formed inside the housing 171. The mounting plate is mounted on the side wall of the housing 171. The three-way ball valve 11 and the first valve 13 are mounted on the mounting plate.

[0051] In this embodiment, the housing 171 is used to support other components of the vacuum on / off control assembly 1 and can be used to fix it to the external environment (e.g., the ground, a column or other processing equipment). The housing 171 is provided with a mounting plate to install and fix the three-way ball valve 11 and the first valve 13.

[0052] Furthermore, in some embodiments, such as Figure 1 and Figure 2 As shown, the mounting plate includes a first mounting plate 172 and a second mounting plate 173. A three-way ball valve 11 is mounted and fixed on the first side of the first mounting plate 172, the second mounting plate 173 is disposed on the second side of the first mounting plate 172, and the first valve 13 is mounted on the second mounting plate 173.

[0053] In this embodiment, the first mounting plate 172 is used to mount and fix the three-way ball valve 11, and the second mounting plate 173 is used to mount and fix the first valve 13. Meanwhile, the three-way ball valve 11 and the first valve 13 are located on opposite sides of the first mounting plate 172. The first mounting plate 172 can separate the three-way ball valve 11 and the first valve 13, so that pipelines connected to the three-way ball valve 11 and the first valve 13 can be laid out respectively.

[0054] Furthermore, such as Figure 1 As shown, the first mounting plate 172 is provided with a clearance hole, and the rotary cylinder of the three-way ball valve 11 extends through the clearance hole to the second side of the first mounting plate 172 and connects with the first valve 13.

[0055] In this embodiment, by providing a clearance hole in the first mounting plate 172, the main structure of the three-way ball valve 11 (i.e., the structure provided with the first air inlet 111, the second air inlet 112 and the exhaust port 113) is located on the first side of the first mounting plate 172, and the rotary cylinder of the three-way ball valve 11 passes through the clearance hole so as to be connected to the first valve 13 through a pipeline.

[0056] In one specific embodiment, the first mounting plate 172 is a horizontally arranged flat plate. The three-way ball valve 11 is mounted and fixed below the first mounting plate 172. The second mounting plate 173 is a stepped plate composed of a first part, a second part, and a third part connected in sequence. The first part is horizontally arranged and fixed above the first mounting plate 172. The second part extends upward from the end of the first part, and the third part extends horizontally from the end of the second part. The first valve 13 is mounted above the third part, and a clearance hole is located below the third part. The rotating shaft of the rotary cylinder passes through the clearance hole, and a baffle 162 is provided on the rotating shaft of the rotary cylinder. A sensor mounting base is mounted above the first mounting plate 172 for mounting a photoelectric switch 161. The second valve 15 is located above the first mounting plate 172 and is mounted and fixed on the side wall of the housing 171.

[0057] On the other hand, such as Figure 1 and Figure 2As shown, this utility model also provides a vacuum fixture control device 2, including: a positive pressure gas source, a vacuum gas source, and a vacuum on / off control component 1 provided in any of the above embodiments. By adopting the vacuum on / off control component 1 of the above embodiments, the vacuum fixture control device 2 of this application also has the advantages of the above-mentioned vacuum on / off control component 1, which will not be described in detail here.

[0058] The positive pressure air source is connected to the first air passage 12 and the second air inlet 112. The vacuum air source is connected to the first air inlet 111.

[0059] In this embodiment, by connecting the positive pressure gas source to the first gas path 12 and the second air inlet 112 respectively, the first gas path 12 and the second air inlet 112 can share a gas source, making the pipeline layout of the vacuum fixture control device 2 simpler and the structure more compact.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vacuum on-off control assembly, characterized by, The utility model relates to a vacuum on-off control assembly, comprising: a three-way ball valve having a first air inlet, a second air inlet and an air outlet, the air outlet being configured to communicate with a suction end of a vacuum fixture, the first air inlet being configured to communicate with a vacuum air source, and the second air inlet being configured to communicate with a positive pressure air source; a first air path and a first valve, the rotating cylinder of the three-way ball valve being configured to communicate with the positive pressure air source through the first air path, the first valve being provided in the first air path and being configured to control the direction of air intake and exhaust of the rotating cylinder so as to selectively communicate the air outlet with the first air inlet or the second air inlet through the rotating cylinder; the first valve being a double-electric-control two-position five-way electromagnetic valve.

2. The vacuum on-off control assembly of claim 1, wherein, The utility model further comprises a second air path and a second valve, the second air inlet being configured to communicate with the positive pressure air source through the second air path, and the second valve being provided in the second air path.

3. The vacuum on-off control assembly of claim 2, wherein, the second valve being a two-way direct-acting electromagnetic valve.

4. The vacuum on-off control assembly of claim 1, wherein, The utility model further comprises a sensor assembly, a controller and an alarm, the sensor assembly and the alarm being electrically connected to the controller, the sensor assembly being configured to detect the rotation angle information of the rotating cylinder of the three-way ball valve, and the controller being configured to control the working state of the alarm according to the rotation angle information.

5. The vacuum on-off control assembly of claim 4, wherein, the sensor assembly comprising a photoelectric switch and a baffle, the baffle being provided on the rotating shaft of the rotating cylinder, and the baffle being rotated to the light path of the photoelectric switch when the air outlet communicates with the first air inlet.

6. The vacuum on-off control assembly of claim 1, wherein, The utility model further comprises a mounting bracket, the mounting bracket having a mounting space formed therein, and the three-way ball valve and the first valve being fixedly mounted in the mounting space.

7. The vacuum on-off control assembly of claim 6, wherein, The mounting bracket comprises a housing and a mounting plate, the mounting space being formed in the housing, and the mounting plate being mounted on the side wall of the housing, and the three-way ball valve and the first valve being mounted on the mounting plate.

8. The vacuum on-off control assembly of claim 7, wherein, The mounting plate comprises a first mounting plate and a second mounting plate. The three-way ball valve is fixedly mounted on the first side of the first mounting plate, the second mounting plate is provided on the second side of the first mounting plate, and the first valve is mounted on the second mounting plate.

9. The vacuum on-off control assembly of claim 8, wherein, The first mounting plate is provided with a clearance hole, and the rotating cylinder of the three-way ball valve extends to the second side of the first mounting plate and is connected with the first valve through the clearance hole.

10. A vacuum jig control apparatus, characterized by, The utility model relates to a vacuum on-off control assembly, comprising: a positive pressure air source, a vacuum air source and the vacuum on-off control assembly according to any one of claims 1 to 9; the positive pressure air source being in communication with the first air path and the second air inlet, respectively, and the vacuum air source being in communication with the first air inlet.

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