KR102150537B1 - Torque test device for temperature control valve - Google Patents

Abstract

The present invention relates to a torque test apparatus for a temperature control valve capable of performing both a torque measurement and a leak test as a facility to test a performance of the temperature control valve (N-type) for an electric automobile to reduce a defect rate. According to the present invention, the temperature control valve, configured to open/close or regulate flow of a flow rate between first and second pipes (74, 75) in a temperature control valve block (7) by a rotor (71) operated by an actuator (72), is supported between a lower jig block (2) fixed on an upper part of a base plate (1) and an upper clamp jig (13) rising or falling by an air cylinder (not shown). Then, it is determined whether or not there is a defect in an assembled status by whether a shaft (73) rotates smoothly when the rotor (71) operates. The actuator (72) is separated from the rotor (71) and supported by an actuator mounting block (21) and a support unit (20). The actuator mounting block (21) is connected to a torque meter (17) by means of a spindle (18). The support unit (20) may be coupled to an upper part of a transfer plate (16) and may be moved in the left-right direction from a base plate (14) fixed to the upper part of the base plate (1).

Description

Torque test device for temperature control valve

The present invention relates to a device for testing the performance of a temperature control valve (N-type) for an electric vehicle to reduce a defect rate, and to a torque test apparatus for a temperature control valve capable of performing both a torque measurement and a LEAK test.

That is, in the conventional torque measuring device, it was an indirect check method that only checks the limit operation capability by applying power, but in the present invention, the actual operating torque at high pressure can be measured by improving it to a direct measurement method capable of measuring a torque sensor. By enabling the high pressure (120 bar) leak test in this facility, it was possible to reduce the number of facilities and reduce the investment cost by improving the quality and shortening the measurement time.

Electric and hybrid vehicles are equipped with a heat pump system to cool or heat the internal space and battery.

The heat pump system is installed to support a change between a cooling device and a heating device, and is used to heat electric vehicles, hybrid vehicles, and internal combustion engine vehicles that do not have enough heat wasted for heating inside the vehicle. Solution for

The heat pump system is provided with a temperature control valve for controlling the flow rate and direction of the refrigerant, and the temperature control valve is configured such that a flow path is opened or closed by a ball operated by an actuator or a flow rate is adjusted.

That is, the temperature control valve is a component of an air conditioning system including a heat pump, and is for controlling the flow of refrigerant for cooling and heating. It is divided into two types of shuttle valves for control.

One air conditioning system is usually composed of four temperature control valves, and the temperature control valve used in an electric vehicle is as illustrated in FIG. 5.

5 is an exemplary view of a temperature control valve, the flow rate between the first pipe 104 and the second pipe 105 in the valve block 100 is configured to be opened or closed or controlled by the actuator 101, An opening/closing means 103 operated by the actuator 101 is positioned at the boundary between the first pipe 104 and the second pipe 105.

The opening/closing means 103 is composed of a needle having an opening 106 therein, and is connected by a shaft 102 so as to be operated by the actuator 101.

Therefore, when the opening 106 of the opening and closing means 103 coincides with the first and second pipes 104 and 105, the flow path is completely opened, and the opening 106 of the opening and closing means 103 is When the first and second pipes 104 and 105 are out of the way, the flow path is completely closed, and the opening degree 106 of the opening and closing means 103 partially overlaps the first and second pipes 104 and 105 The flow rate can be adjusted by adjusting the overlapped range.

In the temperature control valve configured as described above, it is important that the opening and closing means 103 are assembled to the correct size and position so that the operation failure of the opening and closing means 103 does not occur, and it is important to be rigidly assembled so that the refrigerant does not leak. In addition, equipment is used to test the assembly status and refrigerant leakage characteristics.

6 is a torque test apparatus for a temperature control valve according to the prior art, that is, an apparatus for testing an assembly state of a temperature control valve,

A temperature control valve configured to open or close the flow flow between the first pipe 45 and the second pipe 46 in the temperature control valve block 38 by the rotor 38 operated by the actuator 39 or regulate the flow rate Is,

It is supported between the lower jig block 32 fixed on the upper part of the base plate 31 and the upper clamp jig 43 that rises or falls by an air cylinder (not shown),

When the rotor 38 is operated, it is determined whether or not there is a defect in the assembled state by whether the shaft 44 rotates smoothly.

That is, the temperature control valve block 38 is placed on the lower jig pad 35 and the work guide plate 36 of the lower jig block 32,

When the upper clamp jig 43 descends by an air cylinder (not shown), it is firmly supported by the clamp jaw 41 and the clamp pad 40 coupled to the lower portion thereof,

In this state, when the actuator 39 is operated, whether or not the shaft 44 operates smoothly, it is determined whether or not the assembly is defective.

However, in such a conventional device, since a device for measuring the operating torque is not provided, power is applied to the actuator 39 as shown in the accompanying drawing to only perform a drive test with or without an overload, requiring more detailed measurement. There was a problem that could not be confirmed about the presence or absence of defective assembly.

In addition, the internal leak tester had a high pressure (120Bar), so there was no special method other than the helium test facility, and as a conventional construction mechanism, a cable and a connector were used for the actuator 39 with the rotor 38 built in. Thus, a lower jig consisting of a base plate 31, a lower jig block 32, a spring 33, a shaft 34, a lower jig pad 35 and a work guide plate 36, and a clamp pad 40, After loading the valve assembly consisting of the valve block 37, the rotor 38 and the actuator 39 into the upper jig consisting of the clamp jaw 41, the hinge shaft 42 and the upper clamp jig 43, the actuator When the power was applied to (39), the valve was turned on/off to determine whether an overload alarm occurred or not.

That is, in the prior art, after manually fastening the plug to the actuator 39 connector, the lower jig block 32, the spring 33, the shaft 34, the lower jig pad 35, and the work guide plate 36 After loading the jig with a valve assembly consisting of the valve block 37, the rotor 38 and the actuator 39, the upper jig consisting of the clamp jaw 41, the hinge shaft 42 and the upper clamp jig 43 After operating and clamping, power was applied to the actuator 39 to perform a drive test only with or without overload, and the internal leak tester had a high pressure (120 Bar), which was specially designed for other than helium test facilities. There was no method, so it was necessary to have a separate helium test facility.

Therefore, in the torque test apparatus of the temperature control valve according to the conventional technique,

1) Since actuator plugs must be manually operated, they are mainly used for prototype equipment in the early stages of development, and there was a problem that was not suitable for automated production.

2) There was a problem that it had to be manually disassembled and analyzed for the cause of the malfunction due to the assembly status of the internal parts of the valve.

3) Since the LEAK test has to be carried out with a separate helium test facility, expensive equipment is required and work time is more than 90 seconds, and since the helium test is performed in a closed chamber, there is a problem that it is impossible to test after assembling the actuator.

4) Since the drive test and the helium leak test must be performed separately, there is a problem in that installation space and installation cost are increased due to the separate provision of two equipment.

Korean Intellectual Property Office Application No. 10-2003-0064685

The present invention is an invention devised for a 2-Actuator operation (DRIVE) test and a leak test for each of A and B 2-ports after assembling a temperature control valve for an electric vehicle,

Using this device, it is possible to inspect the specifications of the torque 0.05Nm ~ 0.8Nm when operating the valve,

Real-time UPDATE of the operating load status of valve ON/OFF for each product, lot, and port enables application of production management systems (MES, etc.).

In the past, the cycle time that took more than 90 seconds was shortened to less than 45 seconds, so that the investment cost is greatly reduced.

By attaching wires and plugs to the measuring unit, it is easy to apply to automated lines (operating dummy actuators),

A LEAK test circuit is configured in the facility to enable high-precision inspection of less than 0.15cc/min at 120bar high pressure.

The purpose of this is to greatly reduce the installation space and installation cost by allowing the torque test and the LEAK test to be performed in one facility.

The above purpose is:

A temperature control valve configured to open and close the flow rate between the first and second pipelines in the temperature control valve block or to control the flow rate by a rotor operated by an actuator, includes a lower jig block fixed to the upper part of the base plate, and an air cylinder ( The torque test device of the temperature control valve is configured to be supported between the upper clamp jig that rises or falls by (shown in the figure), and then judges whether the assembly is defective or not by whether the shaft rotates smoothly when the rotor is operated. In,

The actuator is separated from the rotor and supported by an actuator mounting block and a support unit, the actuator is connected to a torque meter by a spindle, and the support unit is coupled to an upper portion of the transfer plate, and from a base plate fixed to the upper portion of the base plate. It is achieved by a torque testing device of a temperature control valve, characterized in that it is configured to move in the left and right direction.

The transfer plate is installed to be movable left and right by a transfer means on the base plate, and the actuator supported by the actuator mounting block and the support unit is located at a height corresponding to the rotor, and the actuator is a torque meter by a spindle. It is connected to, and can be supported by a bearing in the support unit so as to be rotatable.

In addition, since the lower jig pad is elastically supported by the spring on the upper part of the lower jig block, it is possible to adequately absorb the vertical impact applied to the temperature control valve block.

Inside the lower jig block and the lower jig pad, at least one jig locator for supporting the temperature control valve block is installed in a vertical direction, a rotor is located in the temperature control valve block, and a first pipe and a second pipe are provided. It is provided, and is configured to open/close or adjust the flow rate of the first and second pipes by rotation of the shaft of the rotor,

The jig locator is provided with an internal pipe in communication with the gas inlet, which is connected to the first and second pipes, so that the LEAK test can be performed immediately with the temperature control valve block set.

Meanwhile, a clamp pad is coupled to a lower portion of the upper clamp jig by a clamp jaw, so that the clamp pad supports the upper portion of the temperature control valve block.

The actuator is fixed to the actuator mounting block, and since the actuator cable is connected to the actuator mounting block, the actuator cable is configured to be directly connected to the actuator without additional manual work.

The upper jig slide is a structure supported by four types of guide bars, that is, four shafts 4 which are press equipment structures.

The present invention is an invention conceived for a 2-Actuator operation (DRIVE) test and a leak test for each 2-port of A and B after assembling an electric vehicle temperature control valve,

Using this device, it is possible to inspect the specifications of the torque 0.05Nm ~ 0.8Nm when operating the valve,

It is possible to apply a production management system (MES, etc.) by real-time UPDATE of the operating load status of valve ON/OFF by each product, lot, and port.

In the past, the cycle time that took more than 90 seconds was shortened to less than 45 seconds, and the investment cost was greatly reduced.

By attaching wires and plugs to the measuring unit, it is easy to apply to automated lines (operating dummy actuators).

By configuring the LEAK test circuit in the facility, it is possible to inspect the high-precision specifications of 0.15cc/min or less at 120bar high pressure.

By allowing the torque test and the LEAK test to be performed in one facility, the installation space and installation cost are greatly reduced.

1 is a front view of a torque test apparatus according to the present invention.
2 is a plan view of a torque test apparatus according to the present invention.
3 is a left side view of the torque test apparatus according to the present invention.
4 is an overall system configuration diagram of a torque test apparatus according to the present invention.
5 is an exemplary diagram of a temperature control valve.
6 is a front view of a torque test apparatus according to the prior art.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention.

Meanwhile, the following description of the present invention is merely an example for structural or functional description. Therefore, the scope of the present invention should not be construed as being limited by the embodiments described in the text.

For example, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea.

In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all or only such effects, the scope of the present invention should not be understood as being limited thereto.

The meaning of the terms described in the present invention should be understood as follows.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle. Other expressions describing the relationship between components, such as "between" and "just between" or "adjacent to" and "directly adjacent to" should be interpreted as well.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of a set feature, number, step, action, component, part, or combination thereof, and one or more other features or numbers. It is to be understood that the possibility of addition or presence of, steps, actions, components, parts, or combinations thereof is not preliminarily excluded.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same as those generally understood by one of ordinary skill in the art to which the present invention belongs.

Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this specification. Does not.

Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the accompanying drawings. The same reference numerals in each drawing indicate the same member.

1 is a front view of a torque test apparatus according to the present invention, FIG. 2 is a plan view of a torque test apparatus according to the present invention, FIG. 3 is a left side view of a torque test apparatus according to the present invention, and FIG. 4 is a torque test according to the present invention. This is the overall system configuration of the device.

In these drawings,

A temperature control valve configured such that the flow rate between the first pipe 74 and the second pipe 75 in the temperature control valve block 7 is opened or closed by the rotor 71 operated by the actuator 72 or regulated. Is,

It is supported between the lower jig block 2 fixed on the upper part of the base plate 1 and the upper clamp jig 13 that rises or descends by an air cylinder (not shown),

When the rotor 71 is operated, it is determined whether or not there is a defect in the assembled state by whether the shaft 73 rotates smoothly.

The actuator 72 is separated from the rotor 71 and supported by the actuator mounting block 21 and the support unit 20, and the actuator mounting block 21 is connected to the torque meter 17 by a spindle 18. And, the support unit 20 is coupled to the upper transfer plate 16, and is configured to move in the left and right direction from the base plate 14 fixed to the upper base plate (1).

In the illustrated embodiment, the base plate 14 is installed side by side on the base plate 1 together with the lower jig block 2, but the base plate 14 and the lower jig block 2 may be integrally configured. have.

The transfer plate 16 is installed to be movable left and right by a transfer means 15 (a rodless cylinder in the illustrated embodiment) on the base plate 14,

The actuator 72 supported by the actuator mounting block 21 and the support unit 20 is positioned at a height corresponding to the rotor 71,

The actuator mounting block 21 is connected to the torque meter 17 by a spindle 18, and is supported by a bearing 19 in the support unit 20 so as to be rotatable.

In addition, since the lower jig pad 5 is elastically supported by the spring 3 on the upper part of the lower jig block 2, it can adequately absorb the vertical impact applied to the temperature control valve block 7. There will be.

Inside the lower jig block 2 and the lower jig pad 5, at least one jig locator 6 for supporting the temperature control valve block 7 is installed in the vertical direction.

The temperature control valve block 7 is provided with a rotor 71 and a first conduit 74 and a second conduit 75, the first and second conduit by rotation of the shaft 73 of the rotor 71. 2 It is configured to open or close the opening of the pipelines 74 and 75 or to control the flow rate,

The jig locator 6 is provided with an internal pipe in communication with the gas injection port 61, which is connected to the first and second pipes 74 and 75, so that the temperature control valve block 7 is tested for a LEAK test. You can proceed immediately after setting.

The clamp pad 10 is coupled to the lower portion of the upper clamp jig 13 by a clamp jaw 11, so that the clamp pad 10 supports the upper portion of the temperature control valve block 7, and the hub The jig block 2 is provided with a gas injection port 61 to communicate with the first and second pipes 74 and 75 of the temperature control valve block 7 through the internal pipe of the jig locator 6.

In addition, the actuator 72 is fixed to the actuator mounting block 21. Since the actuator cable 22 is connected to the actuator mounting block 21, the actuator cable 22 is directly connected to the actuator 72 without manual work. I can connect.

The present invention is a structure in which the upper jig slide is supported by four guide bars, that is, four shafts 4, in consideration of the total reaction force (2.5 Ton) in three portholes that are concerned when testing at high pressure (120 bar). The lower jig has 4 springs (3) between the lower jig block (2) and the lower jig pad (5) to prevent damage to the surface of the temperature control valve block (7) due to impact when the upper jig is operated. Although installed, the spring 3 also plays a role of helping to separate the temperature control valve block 7 from the jig locator 6 when unloading.

In the case of the application of the present invention technology, a torque test is performed only for the WORK that passes after the high-pressure LEAK test is first inspected.In the case of the LEAK test, the inside of the jig locator 6 assembled at the three ports (A, B, C) The high pressure test pipe is processed, and both ends of the high pressure test pipe are connected to the first and second pipes 74 and 75 and the gas inlet 61 of the temperature control valve block 7, respectively, and the connection part The high pressure O-ring for 120bar and the labyrinth structure at the end of the locator are designed to prevent LEAK from occurring at high pressure.For example, if it is less than 0.15cc/min at 120bar, it can be evaluated as passing the high pressure LEAK test.

As such, the torque test is performed only for the WORK that passed the high pressure leak test.

For the torque test, first, a temperature control valve block (7) is mounted between the lower jig pad (5) and the clamp pad (10) so that the rotor (71) is exposed to the right side, and a torsion type torque meter ( 17) is configured to rotate synchronously with the spindle 18, and after attaching the actuator 72, the actuator cable 22, and the connector to the actuator mounting block 21, the transfer means 15 (in the illustrated embodiment, the rodless Cylinder) advances to allow the actuator 72 to be coupled to the rotor 71, and then applying power through the actuator cable 22 and the connector, thereby enabling a torque test.

Torque can be measured from 0 step to 1600 step (1800 step) by measuring the valve operating load torque generated by each step and create a graph as shown in the attached data.For example, if the torque test target specification is 2 port, 0 step to 1800 step 0.05 It can be set from Nm to 0.8Nm.

(After applying the invention device: 1 port of torque diagram for each step)

(After applying the invention device: 2 PORT of torque diagram for each step)

In the torque test apparatus according to the present invention, the torque test is performed only for the WORK that passes after the high-pressure LEAK test is first inspected, and the temperature control valve block 7 is inserted into the lower jig pad 5 and the jig locate 6 After loading, the upper clamp jig 13 descends, and the temperature is controlled between the clamp pad 10 coupled to the lower end of the upper clamp jig 13 and the jig pad 5 coupled to the upper end of the lower jig pad 5 After clamping the valve block 7, the conveying means 15 (which is a rodless cylinder in the illustrated embodiment) advances so that the actuator 72 is coupled to the rotor 71.

Then, power is applied through the actuator cable (22) and connector, and the shaft (73) and needle inside the rotor (71) are operated by step control, and the valve is turned on/off to perform the first leak test and based on a precision flow meter. Immediately after the pass is judged, the second torque test is performed. The torque test is performed under pressure of 120 bar, and the torque for each step is measured and calculated with a torque type torque meter and displayed as a graph.

When the entire inspection is completed, the transfer means 15 (which is a rodless cylinder in the illustrated embodiment) is moved backward, the upper clamp jig 13 is raised, and the temperature control valve block 7 is unloaded.

As described above, the present invention is not limited to the described embodiments, and it is apparent to those of ordinary skill in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

1: base plate 2: lower jig block
3: spring 5: lower jig pad
6: jig locator 7: temperature control valve block
10: clamp pad 13: upper clamp jig
14: base plate 16: transfer plate
17: torque meter 21: actuator mounting block
61: gas inlet 71: rotor
72 actuator 73 shaft
74: first pipe 75: second pipe
76: 3rd pipeline

Claims (7)

A temperature control valve configured such that the flow rate between the first and second pipes 74 and 75 in the temperature control valve block 7 is opened or closed by the rotor 71 operated by the actuator 72 or regulated, The shaft 73 is supported between the lower jig block 2 fixed to the upper part of the base plate 1 and the upper clamp jig 13 rising or lowering by the air cylinder, and then the shaft 73 when operating the rotor 71 In the torque test apparatus of a temperature control valve configured to determine whether or not there is a defect in the assembly state by whether) rotates smoothly,
The actuator 72 is separated from the rotor 71 and supported by the actuator mounting block 21 and the support unit 20, and the actuator mounting block 21 is connected to the torque meter 17 by a spindle 18. And, the support unit 20 is coupled to the upper transfer plate 16, the temperature control valve, characterized in that configured to move in the left and right direction from the base plate 14 fixed on the base plate (1). Torque test device.
The method of claim 1,
The transfer plate 16 is installed to be movable left and right by the transfer means 15 on the base plate 14, and the actuator 72 supported by the actuator mounting block 21 and the support unit 20 is It is located at a height corresponding to the rotor 71, and the actuator mounting block 21 is connected to the torque meter 17 by the spindle 18, and the bearing 19 in the support unit 20 is rotatable. Torque test apparatus for a temperature control valve, characterized in that supported by.
The method of claim 1,
Since the lower jig pad 5 is elastically supported by the spring 3 on the upper part of the lower jig block 2, it is configured to adequately absorb the vertical impact applied to the temperature control valve block 7 Torque test apparatus for a temperature control valve, characterized in that.
The method of claim 3,
Inside the lower jig block 2 and the lower jig pad 5, at least one jig locator 6 for supporting the temperature control valve block 7 is installed in the vertical direction, and the temperature control valve block In (7), a rotor 71 is located and a first pipe 74 and a second pipe 75 are provided, and the first and second pipes 74 are rotated by the rotation of the shaft 73 of the rotor 71. It is configured to open or close the opening of (75) or to control the flow rate
The jig locator 6 is provided with an internal pipe in communication with the gas injection port 61, which is connected to the first and second pipes 74 and 75, so that the temperature control valve block 7 is tested for a LEAK test. Torque test apparatus for a temperature control valve, characterized in that configured to proceed immediately in the set state.
The method of claim 1,
A clamp pad 10 is coupled to a lower portion of the upper clamp jig 13 by a clamp jaw 11, so that the clamp pad 10 is configured to support the upper portion of the temperature control valve block 7 Torque test device for temperature control valve.
The method of claim 1,
The actuator 72 is fixed to the actuator mounting block 21, and since the actuator cable 22 is connected to the actuator mounting block 21, the actuator cable 22 is directly connected to the actuator 72 without manual work. Torque test apparatus of a temperature control valve, characterized in that configured to be connected.
The method of claim 1,
The upper jig slide is a torque test apparatus for a temperature control valve, characterized in that it has a structure supported by four types of guide bars, that is, four shafts (4), which are press equipment structures.

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