Negative pressure control mechanism and feeding device with same

Abstract

The negative pressure control mechanism comprises a valve body and a valve element assembly, the interior of the valve body is hollow to form a cavity, the valve body is provided with a first opening, a second opening, a third opening and a fourth opening which are communicated with the cavity, the first opening is used for being communicated with a negative pressure fan, the second opening is used for being communicated with a use end, and the valve element assembly is used for being communicated with the negative pressure fan. The third opening is used for communicating with external atmosphere or a positive pressure fan; the valve element assembly is arranged in the fourth opening in a penetrating mode and comprises a motor and a valve element, and the output end of the motor is connected with the valve element and used for driving the valve element to move so as to be switched between blocking of the second opening and blocking of the third opening. According to the negative pressure control mechanism, starting and stopping of negative pressure of the using end can be rapidly achieved, noise is low, efficiency is high, and therefore the machining efficiency of the applied machining equipment is greatly improved.

Description

Technical Field

[0001] The present application relates to the field of negative pressure control modules, and in particular to a negative pressure control mechanism and a feeding device having the same. Background Art

[0002] In the related art, the common negative pressure control mechanism includes a negative pressure pipe, a negative pressure fan and a solenoid valve. The negative pressure pipe is connected to the negative pressure fan, and the solenoid valve is arranged between the negative pressure pipe and the negative pressure fan, so as to control the presence or absence of negative pressure in the negative pressure pipe, so that the negative pressure pipe can intermittently generate negative pressure for adsorbing materials. However, the process of the solenoid valve controlling the negative pressure will generate a large noise, thus causing noise pollution. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a negative pressure control mechanism that can quickly start and stop the negative pressure at the use end, with low noise and high efficiency, thereby greatly improving the processing efficiency of the applied processing equipment.

[0004] The utility model also provides a feeding device with the negative pressure control mechanism.

[0005] According to the negative pressure control mechanism of the first aspect embodiment of the utility model, it includes: a valve body and a valve core assembly, the interior of the valve body is hollow to form a cavity, the valve body is provided with a first opening, a second opening, a third opening and a fourth opening which are respectively connected to the cavity, the first opening is used to connect to the negative pressure fan, the second opening is used to connect to the use end, and the third opening is used to connect to the external atmosphere or the positive pressure fan; the valve core assembly is passed through the fourth opening and includes a motor and a valve core, the output end of the motor is connected to the valve core, and is used to drive the valve core to move so as to switch between blocking the second opening and blocking the third opening.

[0006] According to the negative pressure control mechanism of the embodiment of the utility model, there are at least the following beneficial effects: this negative pressure control mechanism includes a valve body and a valve core assembly, the valve core assembly includes a motor and a valve core, the motor is used to drive the valve core to move in the hollow valve body, so as to switch between blocking the second opening and the third opening, when the valve core blocks the third opening under the drive of the motor, the first opening connected to the negative pressure fan and the second opening connected to the use end are connected, so that the use end can generate negative pressure under the action of the negative pressure fan, and when the valve core blocks the second opening under the drive of the motor, the first opening and the third opening are connected, that is, the negative pressure fan is connected to the external atmosphere or the positive pressure fan, and the negative pressure at the use end disappears immediately; therefore, the negative pressure control mechanism driven by the motor can quickly realize the start and stop of the negative pressure at the use end, and has low noise and high efficiency, thereby greatly improving the processing efficiency of the applied processing equipment.

[0007] According to some embodiments of the utility model, the valve body includes a hollow tubular body portion, the first opening and the fourth opening are respectively arranged at two ends of the tubular body portion, the second opening and the third opening are respectively arranged on the peripheral side surfaces of the tubular body portion, and the valve core includes an opening and closing portion, which is a curved surface adapted to the inner wall surface of the tubular body portion and can be rotated under the drive of a motor to block the second opening or the third opening.

[0008] According to some embodiments of the utility model, the valve core also includes a cylindrical portion, which is connected to the output end of the motor and the opening and closing portion, and the cylindrical portion is inserted into the tube body portion, and the projection of the opening and closing portion at one end of the cylindrical portion is a minor arc.

[0009] According to some embodiments of the utility model, a sensor is further included. The sensor is arranged on the valve body or the motor and is used to sense the position of the valve core.

[0010] According to some embodiments of the utility model, the valve core assembly also includes a mounting seat and a connecting piece, the main body of the motor is connected to the valve body through the mounting seat, the output end of the motor is connected to the valve core through the connecting piece, the outer peripheral surface of the connecting piece is provided with a sensing end, and the side surface of the mounting seat is provided with an avoidance hole, the sensor is fixed to the mounting seat and arranged toward the avoidance hole for sensing the sensing end.

[0011] According to some embodiments of the utility model, the sensing end is a bolt, and the bolt is arranged on the outer peripheral surface of the connecting piece. When the bolt corresponds to the avoidance hole, the valve core blocks one of the second opening or the third opening.

[0012] According to the feeding device of the second aspect embodiment of the utility model, it includes the negative pressure control mechanism of the first aspect embodiment of the utility model, including the negative pressure control mechanism as in the first aspect embodiment, the feeding device also includes a feeding mechanism, the feeding mechanism includes a driving component and a conveying member, the conveying member is provided with a through hole connected to the second opening, the output end of the driving component is connected to the conveying member, and is used to drive the conveying member to move, so that the conveying member can drive the material to move.

[0013] The feeding device according to the embodiment of the utility model has at least the following beneficial effects: the feeding device includes the negative pressure control mechanism in the embodiment of the first aspect, and also includes a feeding mechanism, the feeding mechanism includes a driving component and a conveying member, the use end is the conveying member, the through hole of the conveying member is connected to the second opening, the driving component can drive the conveying member to move, the negative pressure generated by the negative pressure control mechanism of the conveying member can drive the material to move, thereby realizing the conveyance of the material, and in the process of conveying the material, the noise is low and the efficiency is high.

[0014] According to some embodiments of the utility model, a suction channel is also included, the conveying member is a conveyor belt, and the through holes in the upper section of the conveyor belt are connected to the second opening through the suction channel to convey the material on the conveyor belt.

[0015] According to some embodiments of the utility model, the air suction channel includes a box body, which is arranged between the upper section of the conveyor belt and the lower section of the conveyor belt, and the top plate of the box body is provided with strip holes, and the extension direction of the strip holes is along the conveying direction of the conveyor belt.

[0016] According to some embodiments of the utility model, the conveyor belts are provided with a plurality of groups arranged side by side and at intervals, and the air suction channel further includes a plurality of connecting pipes, which connect the box body and the second opening and are passed through between adjacent conveyor belts.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the negative pressure control mechanism of the first aspect of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the valve core assembly and the sensor in the negative pressure control mechanism shown in FIG.

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the sensor in the negative pressure control mechanism and the valve core assembly after the mounting seat is removed;

[0022] Figure 4 This is a schematic diagram of the overall structure of one embodiment of the feeding device of the second aspect of the utility model;

[0023] Figure 5 for Figure 4 A cross-sectional view of the feeding device shown in ;

[0024] Figure 6 for Figure 4 The feed device shown in FIG. 1 is a cross-sectional view with the conveyor belt removed.

[0025] Reference numerals:

[0026] Valve body 100; first opening 110; second opening 120; third opening 130; fourth opening 140; valve core assembly 200; motor 210; valve core 220; opening and closing portion 221; cylindrical portion 222; mounting seat 230; avoidance hole 231; connecting piece 240; bolt 250; sensor 300; feeding mechanism 400; conveyor belt 410; through hole 411; air suction channel 420; box body 421; strip hole 4211; connecting pipe 422. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0031] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0032] Reference below Figures 1 to 6 The negative pressure control mechanism of the embodiment of the utility model and the feeding device having the negative pressure control mechanism are described.

[0033] like Figures 1 to 3As shown, the negative pressure control mechanism according to the embodiment of the first aspect of the utility model includes: a valve body 100 and a valve core assembly 200. The valve body 100 is hollow inside to form a cavity. The valve body 100 is provided with a first opening 110, a second opening 120, a third opening 130 and a fourth opening 140 which are respectively connected to the cavity. The first opening 110 is used to connect to the negative pressure fan, the second opening 120 is used to connect to the use end, and the third opening 130 is used to connect to the external atmosphere or the positive pressure fan; the valve core assembly 200 is penetrated through the fourth opening 140 and includes a motor 210 and a valve core 220. The output end of the motor 210 is connected to the valve core 220 and is used to drive the valve core 220 to move so as to switch between blocking the second opening 120 and blocking the third opening 130.

[0034] It can be understood that this negative pressure control mechanism includes a valve body 100 and a valve core assembly 200, and the valve core assembly 200 includes a motor 210 and a valve core 220. The motor 210 is used to drive the valve core 220 to move in the hollow valve body 100, so as to switch between blocking the second opening 120 and the third opening 130. When the valve core 220 blocks the third opening 130 under the drive of the motor 210, the first opening 110 connected to the negative pressure fan and the second opening 120 connected to the use end are connected, so that the use end can generate negative pressure under the action of the negative pressure fan, and when the valve core 220 blocks the second opening 120 under the drive of the motor 210, the first opening 110 and the third opening 130 are connected, that is, the negative pressure fan is connected to the external atmosphere or the positive pressure fan, and the negative pressure at the use end disappears immediately; therefore, the negative pressure control mechanism driven by the motor 210 can quickly realize the start and stop of the negative pressure at the use end, and has low noise and high efficiency, thereby greatly improving the processing efficiency of the applied processing equipment.

[0035] It can be understood that the valve body 100 includes a hollow tube body, the first opening 110 and the fourth opening 140 are respectively arranged at the two ends of the tube body, the second opening 120 and the third opening 130 are respectively arranged on the peripheral side of the tube body, and the valve core 220 includes an opening and closing portion 221, which is a curved surface adapted to the inner wall surface of the tube body and can be rotated under the drive of the motor 210 to block the second opening 120 or the third opening 130. For example, Figures 1 to 3 As shown, in this embodiment, the valve core 220 and the negative pressure motor 210 are respectively arranged at the two ends of the tubular body portion, and the valve core 220 includes an opening and closing portion 221, which is adapted to the curvature of the inner wall surface of the tube body portion. The motor 210 is used to drive the valve core 220 to rotate, so as to block the second opening 120 or the third opening 130 located on the side of the tube body portion of the valve body 100.

[0036] It should be understood that, in addition to the form of the motor 210 driving the valve core 220 to rotate in the present embodiment to realize the switching of the use end negative pressure start and stop. In some other embodiments, it can also be set in the form of the motor 210 driving the valve core 220 to move linearly along the axis of the tube body through the transmission mechanism. At this time, the second opening 120 and the third opening 130 are respectively located on the peripheral side of the tube body and on a straight line parallel to the axis of the tube body. The size of the opening and closing part 221 of the valve core 220 that is only arranged at one end away from the motor 210 can block the second opening 120 or the third opening 130, and other parts of the valve core 220 cannot be blocked, so that the switching of the valve core 220 blocking the second opening 120 or the third opening 130 can also be realized.

[0037] It is understandable that the valve core 220 further includes a cylindrical portion 222, the cylindrical portion 222 is connected to the output end of the motor 210 and the opening and closing portion 221, the cylindrical portion 222 is inserted into the tube body, and the projection of the opening and closing portion 221 at one end of the cylindrical portion 222 is a minor arc. Figures 2 to 3 As shown, in the present embodiment, the valve core 220 also includes a cylindrical portion 222 connected to the opening and closing portion 221 at one end close to the output end of the motor 210, the cylindrical portion 222 is inserted in the tube body, and the projection of the opening and closing portion 221 at one end of the cylindrical portion 222 is a minor arc, indicating that the opening and closing portion 221 only adopts the form of a curved surface with less material, instead of the cylindrical form with an avoidance groove on the side in the prior art, so as to realize the switching of the second opening 120 or the third opening 130, thereby saving material cost, reducing material weight, and reducing the load of the motor 210.

[0038] It is understandable that a sensor 300 is also included, and the sensor 300 is disposed on the valve body 100 or the motor 210 and is used to sense the position of the valve core 220. For example, Figures 1 to 3 As shown, in this embodiment, the rotation position of the valve core 220 is confirmed by the sensor 300, so as to determine whether the state of the use end has negative pressure when the machine is turned on, so as to better realize the coordination between the negative pressure control mechanism and other mechanisms.

[0039] It is understandable that the valve core assembly 200 further includes a connector 240 and a mounting seat 230 sleeved on the connector 240, the main body of the motor 210 is connected to the valve body 100 through the mounting seat 230, the output end of the motor 210 is connected to the valve core 220 through the connector 240, the outer peripheral surface of the connector 240 is provided with a sensing end, the side surface of the mounting seat 230 is provided with an avoidance hole 231, and the sensor 300 is fixed to the mounting seat 230 and arranged toward the avoidance hole 231 for sensing the sensing end. For example, Figures 1 to 3As shown, in this embodiment, the main body of the motor 210 is connected to the valve body 100 through the mounting seat 230, and the output end of the motor 210 is connected to the valve core 220 through the connecting piece 240, that is, the sensor 300 fixed to the mounting seat 230 can sense the sensing end of the side surface of the connecting piece 240 through the avoidance hole 231 on the side surface of the mounting seat 230, so as to confirm the rotation position of the valve core 220; the valve core 220 only switches between the second opening 120 and the third opening 130, so it only needs the sensor 300 to sense the difference in the sensing end to distinguish.

[0040] It is understandable that the sensing end is a bolt 250, and the bolt 250 is arranged on the outer peripheral surface of the connecting member 240. When the bolt 250 corresponds to the avoidance hole 231, the valve core 220 blocks one of the second opening 120 or the third opening 130. For example, Figures 2 to 3 As shown, in this embodiment, the sensing end is a bolt 250 arranged on the outer peripheral surface of the connecting member 240. When the connecting member 240 is rotated to the point where the bolt 250 corresponds to the avoidance hole 231, the valve core 220 blocks one of the second opening 120 or the third opening 130; when the connecting member 240 is rotated to the point where the bolt 250 does not correspond to the avoidance hole 231, the valve core 220 blocks the other of the second opening 120 or the third opening 130, thereby being able to determine the position of the valve core 220, and the sensor 300 transmits the sensed signal to the control system, the control system receives the signal, and controls other operating mechanisms to perform corresponding processing actions.

[0041] It should be understood that, except for the present embodiment in which the sensing end is in the form of a bolt 250 , in some other embodiments, the sensing end may also be configured in the form of a through hole 411 or other components.

[0042] like Figure 4-Figure 6 As shown, the feeding device according to the second aspect embodiment of the utility model includes the negative pressure control mechanism as in the first aspect embodiment mentioned above, and the feeding device also includes a feeding mechanism 400, the feeding mechanism 400 includes a driving component and a conveying member, the conveying member is provided with a through hole 411 connected to the second opening 120, the output end of the driving component is connected to the conveying member, and is used to drive the conveying member to move, so that the conveying member can drive the material to move.

[0043] It can be understood that this feeding device includes the negative pressure control mechanism in the first aspect embodiment, and also includes a feeding mechanism 400. The feeding mechanism includes a driving component and a conveying member. The use end is the conveying member. The through hole 411 of the conveying member is connected to the second opening 120. The driving component can drive the conveying member to move. The negative pressure generated by the negative pressure control mechanism of the conveying member can drive the material to move, thereby realizing the transmission of the material, and in the process of conveying the material, the noise is low and the efficiency is high.

[0044] It can be understood that it also includes a suction channel 420, the conveying member is a conveyor belt 410, and the through hole 411 on the upper section of the conveyor belt 410 is connected to the second opening 120 through the suction channel 420 to convey the material on the conveyor belt 410. Figures 4 to 5 As shown, in this embodiment, the feeding device also includes a suction channel 420, the conveying member is a conveyor belt 410, the suction channel 420 is arranged below the upper section of the conveyor belt 410, and is connected to the through hole 411 and the second opening 120 of the conveyor belt 410, so that during the movement of the upper section of the conveyor belt 410, the negative pressure of the suction channel 420 can be used to achieve product delivery.

[0045] It should be understood that the conveying member may be in the form of a conveying plate or the like in some other embodiments, in addition to the conveying belt 410 in the present embodiment.

[0046] It can be understood that the air suction channel 420 includes a box body 421, which is arranged between the upper section of the conveyor belt 410 and the lower section of the conveyor belt 410, and the top plate of the box body 421 is provided with a strip hole 4211, and the extension direction of the strip hole 4211 is along the conveying direction of the conveyor belt 410. For example, Figure 5 to Figure 6 As shown, in this embodiment, the suction channel 420 includes a box body 421 arranged between the upper section and the lower end of the conveyor belt 410, a bar hole 4211 is opened on the top of the box body 421, and the bottom of the box body 421 is connected to the second opening 120. The conveying direction of the upper section of the conveyor belt 410 is consistent with the extension direction of the bar hole 4211. Therefore, during the conveying process, the through hole 411 of the upper section of the conveyor belt 410 can correspond to the bar hole 4211, thereby realizing the adsorption and driving of the material.

[0047] It is understandable that the conveyor belt 410 is provided with a plurality of groups arranged side by side and at intervals, and the air suction channel 420 further includes a plurality of connecting pipes 422, which are connected to the box body 421 and the second opening 120 and are arranged between adjacent conveyor belts 410. Figure 5 to Figure 6 As shown, in this embodiment, the conveyor belts 410 are provided with multiple groups arranged side by side, and the suction channel 420 also includes a connecting pipe 422 connecting the bottom of the box body 421 and the second opening 120. The connecting pipe 422 is passed between adjacent conveyor belts 410, thereby realizing the transmission of negative pressure.

[0048] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Negative pressure control mechanism, characterized in that: include: A valve body, wherein the interior of the valve body is hollow to form a cavity, and the valve body is provided with a first opening, a second opening, a third opening and a fourth opening respectively connected to the cavity, wherein the first opening is used to connect to a negative pressure fan, the second opening is used to connect to a use end, and the third opening is used to connect to the external atmosphere or a positive pressure fan; A valve core assembly is provided through the fourth opening and includes a motor and a valve core. The output end of the motor is connected to the valve core and is used to drive the valve core to move so as to switch between blocking the second opening and blocking the third opening.

2. The negative pressure control mechanism according to claim 1, characterized in that: The valve body includes a hollow tube body portion, the first opening and the fourth opening are respectively arranged at two ends of the tube body portion, the second opening and the third opening are respectively arranged on the peripheral side surface of the tube body portion, and the valve core includes an opening and closing portion, which is a curved surface adapted to the inner wall surface of the tube body portion and can be rotated under the drive of the motor to block the second opening or the third opening.

3. The negative pressure control mechanism according to claim 2, characterized in that: The valve core also includes a cylindrical portion, which is connected to the output end of the motor and the opening and closing portion. The cylindrical portion is inserted into the tube body portion, and the projection of the opening and closing portion at one end of the cylindrical portion is a minor arc.

4. The negative pressure control mechanism according to claim 2, characterized in that: A sensor is also included. The sensor is arranged on the valve body or the motor and is used to sense the position of the valve core.

5. The negative pressure control mechanism according to claim 4, characterized in that: The valve core assembly also includes a connecting piece and a mounting seat sleeved on the connecting piece, the main body of the motor is connected to the valve body through the mounting seat, the output end of the motor is connected to the valve core through the connecting piece, a sensing end is provided on the outer peripheral surface of the connecting piece, and an avoidance hole is opened on the peripheral side surface of the mounting seat, the sensor is fixed to the mounting seat and arranged toward the avoidance hole for sensing the sensing end.

6. The negative pressure control mechanism according to claim 5, characterized in that: The sensing end is a bolt, and the bolt is arranged on the outer peripheral surface of the connecting member. When the bolt corresponds to the avoidance hole, the valve core blocks one of the second opening or the third opening.

7. A feeding device, characterized in that: It includes a negative pressure control mechanism as described in any one of claims 1 to 6 above, the feeding device also includes a feeding mechanism, the feeding mechanism includes a driving component and a conveying member, the conveying member is provided with a through hole connected to the second opening, the output end of the driving component is connected to the conveying member and is used to drive the conveying member to move so that the conveying member can drive the material to move.

8. The feeding device according to claim 7, characterized in that: It also includes an air suction channel, the conveying member is a conveyor belt, and the through hole in the upper section of the conveyor belt is connected to the second opening through the air suction channel to convey the material on the conveyor belt.

9. The feeding device according to claim 8, characterized in that: The air suction channel includes a box body, which is arranged between the upper section of the conveyor belt and the lower section of the conveyor belt, and the top plate of the box body is provided with strip holes, and the extension direction of the strip holes is along the conveying direction of the conveyor belt.

10. The feeding device according to claim 9, characterized in that: The conveyor belts are provided with a plurality of groups arranged side by side and at intervals, and the air suction channel also includes a plurality of connecting pipes, which are connected with the box body and the second opening and are passed through between adjacent conveyor belts.

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