Quick pressure relief mechanism for vacuum chuck and vacuum chuck

Abstract

The rapid exhaust mechanism for the vacuum chuck comprises an air inlet and outlet pipe (1) located in the vacuum chuck, the air inlet and outlet pipe (1) is provided with a first air vent (2), a second air vent (3) and an exhaust port (4), the first air vent (2) is used for being connected with an air extracting pump, and the second air vent (3) is used for being connected with the exhaust port (4). The second air vent (3) is used for being connected with an air exhaust cavity, a pressure relief button (5) is arranged outside the air exhaust opening (4), a vacuum suction cup rotates in the middle of the pressure relief button (5), a plug (6) matched with the air exhaust opening (4) is arranged at one end of the pressure relief button (5), and a pressing part (7) used for controlling the pressure relief button (5) to rotate is arranged at the other end of the pressure relief button (5). According to the pressure relief device, pressure relief operation of an operator can be facilitated, and the rubber can be independently replaced while the sealing effect of the rubber is guaranteed.

Description

Technical Field

[0001] The utility model relates to a vacuum suction cup, in particular to a quick pressure relief mechanism for the vacuum suction cup and the vacuum suction cup. Background Art

[0002] The electric suction cup is a commonly used handling tool. It is made by fitting the rubber at the bottom of the suction cup to the adsorbent, and then extracting the air between the base and the adsorbent, thereby forming a vacuum with the help of the sealing effect, so that it is tightly adsorbed to the adsorbent and the handling effect is achieved. When the electric suction cup completes the handling action, the vacuum chamber between the base and the adsorbent is depressurized, thereby destroying the negative pressure vacuum state in the vacuum chamber and allowing the suction cup base to be freely separated from the adsorbent. On this basis, there are currently two ways to relieve the pressure of the vacuum chamber. The first one is shown in Patent 202210981748.9. By setting an air-deflation ear on one side of the rubber, the operator can use the air-deflation ear to lift the local position of the rubber, thereby breaking the completely sealed state of the vacuum chamber and achieving the pressure relief function. The second method, as shown in Patent 202010684221.0, is to provide an air valve connected to the air extraction chamber on the electric suction cup, so that the air valve can be restricted by negative pressure in a closed state during normal use; when the electric suction cup needs to be depressurized, the operator can then open the air valve, thereby connecting the air extraction chamber with the outside to achieve the pressure relief function. However, both of these pressure relief methods require the operator to directly destroy the negative pressure state in the air extraction chamber with a large force during operation, thereby increasing the difficulty of depressurizing the electric suction cup.

[0003] Furthermore, to ensure the connection strength and sealing of the rubber to the bottom of the suction cup, existing manufacturers generally fix the rubber directly to the bottom of the suction cup and make it impossible to remove it. As a result, when the rubber is damaged and its sealing effect is affected, the user needs to replace the entire chassis, which increases the subsequent maintenance cost of the electric suction cup. On the other hand, the rubber material is relatively soft. If the manufacturer uses conventional methods such as snap-fitting to detachably connect the rubber to the bottom of the suction cup, it is easy to cause the rubber to curl and deform and loosen when subjected to force, thereby destroying the sealing performance between the rubber and the suction cup and affecting its handling stability.

[0004] Therefore, the existing vacuum suction cup has the problems of inconvenient pressure relief operation and the inability to replace the rubber separately. Utility Model Content

[0005] The purpose of the utility model is to provide a quick pressure relief mechanism for a vacuum suction cup, which can facilitate the pressure relief operation of the operator and provide a vacuum suction cup that can ensure the sealing effect of the rubber while realizing the independent replacement of the rubber.

[0006] The technical solution of the utility model is: a quick pressure relief mechanism for a vacuum suction cup, including an air inlet and outlet pipes located in the vacuum suction cup, the air inlet and outlet pipes are respectively provided with a first air vent, a second air vent and an exhaust port, the first air vent is used to connect to an air pump, the second air vent is used to connect to an air suction chamber, a pressure relief button is provided on the outside of the exhaust port, the middle part of the pressure relief button rotates the vacuum suction cup, one end of the pressure relief button is provided with a plug that cooperates with the exhaust port, and the other end of the pressure relief button is provided with a pressing part for controlling the rotation of the pressure relief button.

[0007] In the aforementioned quick pressure relief mechanism for a vacuum suction cup, the inner side of the pressing portion is connected to the vacuum suction cup via an elastic member.

[0008] In the aforementioned quick pressure relief mechanism for a vacuum suction cup, the elastic member is a compression spring, one end of the compression spring is buckled and connected to the vacuum suction cup, and the other end of the compression spring is in contact with the inner end surface of the pressing portion.

[0009] In the aforementioned quick pressure relief mechanism for a vacuum suction cup, the air inlet and outlet pipes are provided with a detection air port for connecting to an air pressure sensor.

[0010] A vacuum suction cup is also provided, comprising the aforementioned quick pressure relief mechanism for the vacuum suction cup.

[0011] In the aforementioned vacuum suction cup, the vacuum suction cup includes a suction cup frame and a handle connected to each other, an air pump is connected to the handle, a first air hole for ventilation is provided on the suction cup frame, an air suction cavity is formed outside the first air hole, the two ends of the inlet and outlet pipes are respectively connected to the air suction pump and the air suction cavity through the first air port and the second air port, the pressure relief button is rotatably connected to the handle, and the elastic member is snap-fitted and connected to the handle.

[0012] In the aforementioned vacuum suction cup, an opening is provided on the side wall of the handle to match the pressing portion. When the pressure relief button is in a pressed state, a gap is formed between the pressing portion and the opening for gas circulation.

[0013] In the aforementioned vacuum suction cup, the lower end of the suction cup frame is detachably connected to a rubber, the middle part of the rubber is concave inward to form an air extraction cavity, and a second air hole connected to the first air hole is provided on the rubber.

[0014] In the aforementioned vacuum suction cup, the bottom of the suction cup frame is provided with engaging grooves around the periphery, the four sides of the rubber are buckled and connected to the engaging grooves via engaging parts, and a support frame is provided in the middle of the engaging parts.

[0015] In the aforementioned vacuum suction cup, the first air hole and the second air hole are connected to each other through an air extraction channel located at the bottom of the suction cup frame. The air extraction channel is used to be in a negative pressure state when the vacuum suction cup is working and to keep the rubber close to the suction cup frame.

[0016] Compared with the prior art, the present invention has the following features:

[0017] (1) The utility model uses the structural coordination of the air inlet and outlet pipes, the exhaust port, the pressure relief button and the plug to enable the operator to control the plug to close or move away from the exhaust port through the pressure relief button, thereby realizing the pressure relief function; by rotating the pressure relief button to connect it in the vacuum suction cup and limiting the position of the pressing part, the pressure relief button can form a lever structure, which effectively reduces the pressing force required to rotate the pressure relief button to open the plug, thereby facilitating the user's operation;

[0018] (2) An opening for a pressure relief button is provided on the side wall of the handle of the vacuum suction cup, so that the pressure relief button can be engaged with the opening under the squeezing action of the elastic member in the non-pressure relief state, thereby sealing the inner cavity of the handle and preventing external impurities from entering the handle and causing obstruction; and when the user presses the pressing portion to relieve pressure, a gap for gas to enter is formed between the pressing portion and the opening, thereby ensuring its pressure relief stability;

[0019] (3) By defining the connection structure between the vacuum suction cup and the rubber, the four sides of the rubber can be interlocked with each other through the interlocking part and the support frame and the interlocking groove at the bottom of the suction cup frame to achieve a sealing effect; on this basis, by interconnecting the first air hole and the second air hole through the air extraction channel, the vacuum suction cup can also keep the air extraction channel in a negative pressure state during suction, thereby adsorbing the rubber below, avoiding the problem of force displacement or detachment of the rubber, and further improving the connection stability and sealing effect between the rubber and the suction cup frame;

[0020] Therefore, the utility model can facilitate the pressure relief operation of the operator and realize the separate replacement of the rubber while ensuring the sealing effect of the rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of Example 1;

[0022] Figure 2 is a schematic structural diagram of Example 2;

[0023] Figure 3 yes Figure 2 A-direction enlarged view;

[0024] Figure 4 It is an outline diagram of Example 2;

[0025] Figure 5 yes Figure 4 The appearance after removing the rubber.

[0026] The marks in the accompanying drawings are: 1-inlet and outlet pipes, 2-first air vent, 3-second air vent, 4-exhaust port, 5-pressure relief button, 6-plug, 7-pressing part, 8-elastic part, 9-detection air port, 10-suction cup frame, 11-handle, 12-air pump, 13-first air hole, 14-air suction cavity, 15-air pressure sensor, 16-opening, 17-rubber, 18-second air hole, 19-air suction channel, 20-clamping groove, 21-clamping part, 22-support frame. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0028] Example 1. A quick pressure relief mechanism for a vacuum suction cup, comprising: Figure 1 As shown, it includes an air inlet and outlet pipe 1 fixed in the vacuum suction cup, and a first air vent 2, a second air vent 3 and an exhaust port 4 are respectively provided on the air inlet and outlet pipe 1. The first air vent 2 is used to connect to the air pump, and the second air vent 3 is used to connect to the air suction chamber. A pressure relief button 5 is provided on the outside of the exhaust port 4. The middle part of the pressure relief button 5 rotates the vacuum suction cup, and one end of the pressure relief button 5 is provided with a plug 6 that cooperates with the exhaust port 4. The plug 6 is made of flexible material and is buckled with the pressure relief button 5. The other end of the pressure relief button 5 is provided with a pressing part 7 for controlling the rotation of the pressure relief button 5.

[0029] The inner side of the pressing part 7 is connected to the vacuum suction cup through the elastic part 8; when the operator presses the pressing part 7, the pressure relief button 5 rotates and drives the plug 6 to open, thereby releasing the blockage of the exhaust port 4, allowing the gas in the suction chamber to be discharged outward from the exhaust port 4 of the inlet and outlet pipes 1, completing the pressure relief; when the operator releases the pressure, the elastic part 8 rebounds and drives the pressure relief button 5 to rotate and reset, and the plug 6 re-blocks the exhaust port 4, so that the vacuum pump can suck the gas in the suction chamber through the inlet and outlet pipes 1, thereby realizing the suction function.

[0030] The elastic member 8 is a compression spring, one end of which is buckled and connected to the vacuum suction cup, and the other end of which is in contact with the inner end surface of the pressing portion 7 .

[0031] An opening 16 for snapping and connecting the pressing portion 7 is provided on the side wall of the vacuum suction cup. When the pressure relief button 5 is in the non-pressure relief state, the pressing portion 7 and the opening 16 snap together and close the opening 16; when the pressure relief button 5 is in the pressure relief state, a gap is formed between the pressing portion 7 and the opening 16, allowing external air to enter the inlet and outlet pipes 1 through the exhaust port 4.

[0032] The air inlet and outlet pipes 1 are provided with a detection air port 9 for connecting to an air pressure sensor.

[0033] When the vacuum cup is in a negative pressure evacuation state, the plug 6 is tightly fitted with the exhaust port 4 under the cooperation of the elastic member 8 and the vacuum pump, so that the exhaust port 4 remains sealed and the vacuum pump can effectively evacuate the vacuum chamber. When the vacuum chamber needs to be depressurized, the operator presses the pressing portion 7 to rotate the pressure relief button 5, so that the plug 6 is separated from the exhaust port 4 as it rotates, and the pressing portion 7 is separated from the opening 16 as it rotates, so that external air can enter the vacuum chamber through the opening 16, the exhaust port 4, the air inlet and outlet pipes 1, and the second air vent 3 in sequence, achieving a pressure relief effect.

[0034] Example 2. A vacuum suction cup, comprising: Figure 2-5 As shown, it includes a quick pressure relief mechanism for a vacuum suction cup in Example 1, the vacuum suction cup includes a suction cup frame 10 and a handle 11 connected to each other, an air pump 12 is connected to the handle 11, a first air hole 13 for ventilation is provided on the suction cup frame 10, and an air suction cavity 14 is formed outside the first air hole 13, and the two ends of the inlet and outlet pipes 1 are respectively connected to the air suction pump 12 and the air suction cavity 14 through the first air vent 2 and the second air vent 3, the pressure relief button 5 is rotatably connected to the handle 11, and the elastic member 8 is snap-fitted and connected to the handle 11.

[0035] The outside of the detection air port 9 is connected to an air pressure sensor 15 with a display function through a hose. The display of the air pressure sensor 15 extends to the outer wall of the handle 11 and is used to display the air pressure value in the air extraction cavity 14.

[0036] An opening 16 that cooperates with the pressing portion 7 is provided on the side wall of the handle 11. When the pressure relief button 5 is in a pressed state, a gap for gas circulation is formed between the pressing portion 7 and the opening 16; when the pressure relief button 5 is in a non-pressed state, the pressing portion 7 is snapped into connection with the opening 16 and closes the opening 16.

[0037] The lower end of the suction cup frame 10 is detachably connected to a rubber 17 , the middle portion of the rubber 17 is recessed inward to form an air extraction cavity 14 , and a second air hole 18 communicating with the first air hole 13 is provided on the rubber 17 .

[0038] The bottom of the suction cup frame 10 is provided with a snap-fitting groove 20 around the edges, and the rubber 17 is snap-fitted to the snap-fitting groove 20 via a snap-fitting portion 21 around the edges. A support frame 22 made of a rigid material is provided in the middle of the snap-fitting portion 21. The support frame 22 is annular in shape and the rubber 17 is rubber-encapsulated and molded on the outside of the support frame 22.

[0039] The first air hole 13 and the second air hole 18 are offset from each other in the horizontal direction. The first air hole 13 and the second air hole 18 are connected to each other through an exhaust channel 19 located at the bottom of the suction cup frame 10. The exhaust channel 19 is used to be in a negative pressure state when the vacuum suction cup is working and to make the rubber 17 close to the suction cup frame 10.

[0040] The first air hole 13 and the second air hole 18 are both fastened with dustproof sheets, which can double filter the air path of the vacuum suction cup, thereby preventing external impurities from entering the rubber 17 or the suction cup frame 10 and causing blockage.

[0041] In this embodiment, the quick exhaust mechanism in Example 1 is installed in the handle 11 of the vacuum suction cup, so that the user can achieve stable pressure relief of the vacuum chamber 14 by pressing the pressing part 7. On this basis, by fastening the rubber to the snap-fitting groove 20 via the snap-fitting part 21 with the support frame 22, the connection stability between the snap-fitting part 21 and the snap-fitting groove 20 can be improved, and the snap-fitting part 21 can be prevented from being peeled off from the snap-fitting groove 20 due to deformation due to local force. Furthermore, through the cooperation of the first air hole 13, the second air hole 18 and the air extraction channel 19, the air extraction channel 19 can be kept in a negative pressure state after the vacuum suction cup is sucked, thereby adsorbing the rubber 17 below, that is, preventing the possibility of the rubber 17 being offset and falling off from the suction cup frame 10 as a whole after being stressed.

Claims

1. A quick pressure relief mechanism for a vacuum suction cup, characterized in that: The invention comprises an air inlet and outlet pipe (1) located in a vacuum suction cup, wherein a first air vent (2), a second air vent (3) and an exhaust port (4) are respectively provided on the air inlet and outlet pipe (1), wherein the first air vent (2) is used to connect to an air pump, and the second air vent (3) is used to connect to an air extraction chamber, and a pressure relief button (5) is provided outside the exhaust port (4), wherein the middle part of the pressure relief button (5) rotates the vacuum suction cup, and a plug (6) that matches the exhaust port (4) is provided at one end of the pressure relief button (5), and a pressing part (7) for controlling the rotation of the pressure relief button (5) is provided at the other end of the pressure relief button (5).

2. A quick pressure relief mechanism for a vacuum suction cup according to claim 1, characterized in that: The inner side of the pressing portion (7) is connected to the vacuum suction cup via an elastic member (8).

3. The quick pressure relief mechanism for a vacuum suction cup according to claim 2, characterized in that: The elastic member (8) is a compression spring, one end of which is buckled and connected to the vacuum suction cup, and the other end of which is in contact with the inner end surface of the pressing portion (7).

4. The quick pressure relief mechanism for a vacuum suction cup according to claim 1, characterized in that: The air inlet and outlet pipes (1) are provided with a detection air port (9) for connecting to an air pressure sensor.

5. Vacuum suction cup, characterized by: The vacuum suction cup includes a quick pressure relief mechanism for a vacuum suction cup according to any one of claims 1 to 4.

6. The vacuum suction cup according to claim 5, wherein: The vacuum suction cup comprises a suction cup frame (10) and a handle (11) connected to each other, an air pump (12) is connected inside the handle (11), a first air hole (13) for ventilation is provided on the suction cup frame (10), an air extraction cavity (14) is formed outside the first air hole (13), two ends of the air inlet and outlet pipes (1) are connected to the air extraction pump (12) and the air extraction cavity (14) respectively through the first air vent (2) and the second air vent (3), and the pressure relief button (5) is rotatably connected inside the handle (11).

7. The vacuum suction cup according to claim 6, wherein: An opening (16) that matches the pressing portion (7) is provided on the side wall of the handle (11). When the pressure relief button (5) is in a pressed state, a gap for gas circulation is formed between the pressing portion (7) and the opening (16).

8. The vacuum suction cup according to claim 6, wherein: The lower end of the suction cup frame (10) is detachably connected to a rubber (17), the middle portion of the rubber (17) is recessed inward to form an air extraction cavity (14), and the rubber (17) is provided with a second air hole (18) communicating with the first air hole (13).

9. The vacuum suction cup according to claim 8, wherein: The bottom of the suction cup frame (10) is provided with a snap-fitting groove (20) around the periphery, and the rubber (17) is snap-fitted and connected to the snap-fitting groove (20) via a snap-fitting portion (21), and a support frame (22) is provided in the middle of the snap-fitting portion (21).

10. The vacuum suction cup according to claim 8, wherein: The first air hole (13) and the second air hole (18) are connected to each other via an air extraction channel (19) located at the bottom of the suction cup frame (10). The air extraction channel (19) is used to be in a negative pressure state when the vacuum suction cup is working and to make the rubber (17) close to the suction cup frame (10).

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