Anti-falling structure of quick-change device

Abstract

The utility model belongs to the technical field of quick change of robots, and particularly relates to an anti-falling structure of a quick change device, which comprises a first electromagnetic valve, a pneumatic control valve and a second electromagnetic valve which are sequentially connected through air pipes, the first electromagnetic valve is connected with a quick change device through an air pipe; the second electromagnetic valve is connected with a quick change device through an air pipe; the pneumatic control valve is connected with the pneumatic control detection switch through an air pipe, the pneumatic control detection switch is installed at a designated position, and when the pneumatic control detection switch detects that the tool clamp is arranged at the designated position, the pneumatic control valve is controlled to be switched on. It can be understood that according to the technical scheme, only when the tool clamp is arranged at a designated position, the air control valve is switched on, the air cylinder can be opened, it is guaranteed that the air cylinder cannot be opened in the tool switching process of the quick-change device, and even if the electric control valve fails, the safety of the quick-change device can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of robot quick change, and in particular relates to an anti-drop structure of a quick change device. Background Art

[0002] The quick-change device can quickly switch the robot's end fixtures or tools, but at the same time, there is a very high risk that the quick-change device will accidentally fall off.

[0003] The existing technical solution uses an electric control valve to control the clamping and opening of the quick-change device, which is prone to malfunction caused by abnormal electric control signals. The risks are as follows: when dual power supplies are used in the same circuit, when the power supply circuit is short-circuited abnormally, the polarity of the solenoid valve may change. Even if there is no control power output, the solenoid valve may open due to power supply abnormality. Summarizing the risks that have occurred in the past, such as the control signal IO not being refreshed resulting in the signal not being updated in time, power short circuit, erroneous operation, etc., all of which may cause the quick-change device to open erroneously.

[0004] Therefore, the quick-change device in the prior art has a very high risk of accidentally falling off. Utility Model Content

[0005] To this end, the utility model provides an anti-drop structure for a quick-change device to solve the problem of accidental dropping of the quick-change device in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An anti-drop structure for a quick-change device, comprising:

[0008] A first solenoid valve, a gas-controlled valve, and a second solenoid valve connected in sequence through an air pipe; the first solenoid valve is connected to a quick-change device through an air pipe; the second solenoid valve is connected to the quick-change device through an air pipe;

[0009] The air-controlled valve is connected to the air-controlled detection switch through an air pipe. The air-controlled detection switch is installed at a specified position. When the air-controlled detection switch detects that the fixture is placed at the specified position, the air-controlled valve is controlled to be turned on.

[0010] Preferably, the anti-drop structure of the quick-change device further includes:

[0011] A quick exhaust valve is arranged between the air-controlled valve and the air-controlled detection switch.

[0012] Preferably, the anti-drop structure of the quick-change device further includes:

[0013] The number of the pneumatic detection switches is equal to the number of fixtures that need to be quickly replaced;

[0014] When the number of the gas-controlled detection switches is greater than or equal to two, the gas-controlled detection switches are connected in series in sequence through gas pipes.

[0015] Preferably, the anti-drop structure of the quick-change device further includes:

[0016] The gas-controlled detection switch and the quick exhaust valve are both provided with a muffler.

[0017] Preferably, in the anti-drop structure of the quick-change device, the air pipe is an 8 mm pneumatic control pipe.

[0018] Preferably, the anti-drop structure of the quick-change device and the model of the air-controlled valve are VTA315-02.

[0019] Preferably, the anti-drop structure of the quick-change device and the model of the quick exhaust valve are ASV410F-01-08S.

[0020] Preferably, the anti-drop structure of the quick-change device and the model of the pneumatic detection switch are VM830-01-01.

[0021] The utility model adopts the above technical solution, which has at least the following beneficial effects:

[0022] It is understandable that the anti-drop structure of a quick-change device shown in the utility model includes: a first solenoid valve, an air-controlled valve, and a second solenoid valve connected in sequence through an air pipe; the first solenoid valve is connected to the quick-change device through an air pipe; the second solenoid valve is connected to the quick-change device through an air pipe; the air-controlled valve is connected to the air-controlled detection switch through an air pipe, and the air-controlled detection switch is installed in a specified position. When the air-controlled detection switch detects that the tooling fixture is placed in the specified position, the air-controlled valve is controlled to be turned on. It is understandable that the technical solution can only open the cylinder when the tooling fixture is placed in the specified position and the air-controlled valve is turned on, ensuring that the quick-change device cannot open the cylinder during the process of switching the tooling. The control circuit composed of electric control and air control can ensure its safety even if the electric control valve fails.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the gas circuit of the prior art quick-change device;

[0026] Figure 2 It is a schematic diagram of an anti-drop structure of a quick-change device according to an exemplary embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of a gas-controlled detection switch shown in an exemplary embodiment of the utility model;

[0028] Figure 4 It is a data diagram of a gas-controlled detection switch shown in an exemplary embodiment of the utility model;

[0029] Figure 5 It is a schematic diagram of a gas-controlled valve shown in an exemplary embodiment of the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0031] For existing quick-change devices, see Figure 1 , using an electric control valve to control the clamping and opening of the quick-change device is prone to malfunctions caused by abnormal electric control signals. The risks are as follows: when dual power supplies are used in the same circuit, when the power supply circuit is short-circuited abnormally, the polarity of the solenoid valve may change. Even if there is no control power output, the solenoid valve may open due to power supply abnormalities. Summarizing the risks that have occurred in the past, such as the control signal IO not being refreshed resulting in the signal not being updated in time, power short circuit, and erroneous operation, all of which may cause the quick-change device to open erroneously.

[0032] Figure 2 FIG. 1 is a schematic diagram of an anti-drop structure of a quick-change device 10 according to an exemplary embodiment of the present invention. Figure 2 , providing an anti-drop structure of a quick change device, comprising:

[0033] A first solenoid valve 13, a gas-controlled valve 12, and a second solenoid valve 11 connected in sequence through an air pipe; the first solenoid valve 13 is connected to a quick-change device 10 through an air pipe; the second solenoid valve 11 is connected to a quick-change device 10 through an air pipe;

[0034] The air-controlled valve 12 is connected to the air-controlled detection switch (14, 15) through an air pipe. The air-controlled detection switch is installed at a specified position. When the air-controlled detection switch detects that the fixture is placed at the specified position, the air-controlled valve 12 is controlled to be turned on.

[0035] In specific practice, a group of pneumatic control valves 12 are added between the original two electric control valves. The pneumatic control valve 12 is logically controlled by an air pipe and a pneumatic control detection switch, which can physically disconnect the air source for clamping and opening the quick-change device 10, thus ensuring safety. A pneumatic control detection switch that can detect whether the tooling fixture is in place is added in series to the tool storage rack to detect whether the tooling fixture is placed on the storage rack. A pneumatic control detection switch is installed on the tooling fixture workbench to detect whether the tooling fixture is in the specified position. The logical OR valve is used for the "or" function. As long as one of the conditions is met, the cylinder of the quick-change device 10 can be opened. In this way, it can be ensured that the cylinder of the quick-change device 10 cannot be opened during the process of switching the tooling. The control circuit composed of electric control and pneumatic control can ensure its safety even if the electric control valve fails.

[0036] The air-controlled valve 12 is connected in series with the original solenoid valve air circuit, which plays the role of physically disconnecting the gas. The air-controlled valve 12 is not electrically controlled and has high safety. Under the joint action of the air-controlled valve 12 and the air-controlled detection switch, the air can only be ventilated and the air-controlled valve 12 can be opened after the tool is actually in place.

[0037] In specific practice, the technical solution shown in this embodiment is adopted. When the quick-change device 10 is in the process of switching the tooling, the tooling fixture has not reached the specified position, and therefore, the air-controlled valve 12 cannot be triggered. At this time, if an abnormality occurs, the cylinder cannot be opened. The control circuit composed of the combination of electric control and air control can ensure its safety even if the solenoid valve fails.

[0038] It should be noted that the anti-drop structure of the quick-change device further includes:

[0039] A quick exhaust valve 14 is provided between the gas-controlled valve 12 and the gas-controlled detection switch.

[0040] In specific practice, by providing the quick exhaust valve 14, the residual gas in the gas circuit can be quickly exhausted when the gas control valve 12 is started, thereby avoiding the problem of the quick change device 10 not being able to operate in time.

[0041] It should be noted that the anti-drop structure of the quick-change device further includes:

[0042] The number of the pneumatic detection switches is equal to the number of fixtures that need to be quickly replaced; Figure 2 In the figure, two gas-controlled detection switches (14, 15) are shown;

[0043] When the number of the gas-controlled detection switches is greater than or equal to two, the gas-controlled detection switches are connected in series in sequence through gas pipes.

[0044] It should be noted that the anti-drop structure of the quick-change device further includes:

[0045] The gas-controlled detection switch and the quick exhaust valve 14 are both provided with a muffler.

[0046] It should be noted that, in the anti-drop structure of the quick-change device, the air pipe is an 8mm pneumatic control pipe.

[0047] It should be noted that the anti-drop structure of the quick-change device and the model of the pneumatic detection switch are VM830-01-01, see Figure 3 and Figure 4 .

[0048] It should be noted that the anti-drop structure of the quick-change device and the model of the air-controlled valve 12 are VTA315-02. Figure 5 .

[0049] It should be noted that, in the anti-drop structure of the quick-change device, the model of the quick exhaust valve 14 is ASV410F-01-08S.

[0050] It is understandable that the anti-drop structure of a quick-change device shown in the utility model includes: a first solenoid valve, a pneumatic control valve, and a second solenoid valve connected in sequence through an air pipe; the first solenoid valve is connected to the quick-change device through an air pipe; the second solenoid valve is connected to the quick-change device through an air pipe; the pneumatic control valve is connected to the pneumatic control detection switch through an air pipe, and the pneumatic control detection switch is installed in a specified position. When the pneumatic control detection switch detects that the tooling fixture is placed in the specified position, the pneumatic control valve is controlled to be turned on. It is understandable that the technical solution can only open the cylinder when the tooling fixture is placed in the specified position and the pneumatic control valve is turned on, ensuring that the quick-change device cannot open the cylinder during the process of switching the tooling. The control circuit composed of electric control and pneumatic control can ensure its safety even if the electric control valve fails.

[0051] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0052] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An anti-drop structure for a quick-change device, characterized in that: include: A first solenoid valve, a gas-controlled valve, and a second solenoid valve connected in sequence through an air pipe; the first solenoid valve is connected to a quick-change device through an air pipe; the second solenoid valve is connected to the quick-change device through an air pipe; The air-controlled valve is connected to the air-controlled detection switch through an air pipe. The air-controlled detection switch is installed at a specified position. When the air-controlled detection switch detects that the fixture is placed at the specified position, the air-controlled valve is controlled to be turned on.

2. The anti-drop structure of the quick-change device according to claim 1, characterized in that: Also includes: A quick exhaust valve is arranged between the air-controlled valve and the air-controlled detection switch.

3. The anti-drop structure of the quick-change device according to claim 2, characterized in that: Also includes: The number of the pneumatic detection switches is equal to the number of fixtures that need to be quickly replaced; When the number of the gas-controlled detection switches is greater than or equal to two, the gas-controlled detection switches are connected in series in sequence through gas pipes.

4. The anti-drop structure of the quick-change device according to claim 3, characterized in that: Also includes: The gas-controlled detection switch and the quick exhaust valve are both provided with a muffler.

5. The anti-drop structure of the quick-change device according to claim 4, characterized in that: The air pipe is an 8 mm pneumatic control pipe.

6. The anti-drop structure of the quick-change device according to any one of claims 1 to 5, characterized in that: The model of the air control valve is VTA315-02.

7. The anti-drop structure of the quick-change device according to any one of claims 2 to 5, characterized in that: The model of the quick exhaust valve is ASV410F-01-08S.

8. The anti-drop structure of the quick-change device according to any one of claims 1 to 5, characterized in that: The model of the gas-controlled detection switch is VM830-01-01.

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