A method and device for assembling a pressure relief assembly of an automobile air-conditioning compressor

Abstract

The present invention relates to an assembly method for a pressure relief assembly of an automobile air-conditioning compressor, and the implementation method is as follows: a steel ball, a spring and a plugging nail are sequentially placed in a valve hole of a one-way valve of a static vortex disk, the valve hole of the one-way valve is closed and a high-frequency air pressure monitor is used to detect the air pressure value in the one-way valve, the plugging nail is squeezed toward the inner direction of the valve hole of the one-way valve, and the plugging nail pressing operation is stopped when the air pressure value is monitored to reach a set value or is within a set range. After the implementation of the present invention, the assembly quality and efficiency of the one-way valve are greatly improved, and the influence of the drilling depth on the pressing result is avoided through the air detection method; a large number of mechanical structures for contact steel ball measurement are reduced, the equipment cost is reduced, and the mechanical operation error of the contact steel ball measuring spring pressure is avoided, the outflow of defective products is prevented, the assembly efficiency is improved by more than 40%, and the pressing cycle can reach 30±1S.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy automobile air-conditioning compressors, and more specifically, to an assembly method and device for an automobile air-conditioning compressor pressure relief assembly. Background Art

[0002] The assembly of the non-return valve of the air-conditioning compressor of new energy vehicles is to place a steel ball at the non-return valve hole on the static scroll disk, and provide pressure through the spring to limit the non-return valve pressure relief value. There is a blocking nail at the outer end of the non-return valve hole to limit the position of the spring to ensure the position of the spring and ensure the stability of the non-return valve pressure relief value. The current method is mostly limited press-fitting. The defective rate of products processed by this method is about 15%, and the production cycle is 44±3S. Some customers also use direct contact with the steel ball to measure the spring pressure value. The defective rate of products processed by this method is about 3%, and the production cycle is 90±5S. There is an urgent need for a method that can improve product yield and processing efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method and device for assembling a pressure relief assembly of an automobile air-conditioning compressor in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] Construct a method for assembling a pressure relief assembly of an automobile air-conditioning compressor, and the implementation method is as follows:

[0006] Place the steel ball, spring and plugging pin into the valve hole of the one-way valve of the static vortex disc in sequence, close the valve hole of the one-way valve and use a high-frequency air pressure monitor to detect the air pressure value in the one-way valve, squeeze the plugging pin toward the inside of the valve hole of the one-way valve, and stop the plugging pin pressing operation when the monitored air pressure value reaches a set value or is within a set range.

[0007] The automobile air-conditioning compressor pressure relief assembly assembly method described in the present invention, wherein the valve hole of the one-way valve is a through hole; a steel ball, a spring and a blocking nail are placed in sequence at one end of the valve hole of the one-way valve, and the other end is blocked by the air pressure detection head of the frequency air pressure monitor; the detection air hole of the air pressure detection head is connected to the valve hole of the one-way valve.

[0008] The automobile air-conditioning compressor pressure relief assembly assembly method described in the present invention also includes the following method: setting multiple groups of identical or different set distances, when the monitored air pressure value does not reach the set value after the blocking pin is pressed into a group of set distances, continue to press into the next group of set distances, and repeat the above operation until it is detected that the air pressure value is not less than the set value or not less than the minimum value of the set range interval; if the detected air pressure value reaches the set value or is within the set range interval when the operation is stopped, it is determined to be qualified; if the detected air pressure value exceeds the set value or is greater than the maximum value of the set range interval when the operation is stopped, it is determined to be unqualified.

[0009] The automobile air-conditioning compressor pressure relief assembly assembly method described in the present invention also includes a method: when performing a plugging operation, the air pressure value detected by the high-frequency air pressure monitor is used as a pressure value analog quantity to directly transmit a voltage value to a device performing the plugging operation, and the device is stopped according to the voltage value.

[0010] A vehicle air-conditioning compressor pressure relief component assembly device is used to implement the above-mentioned vehicle air-conditioning compressor pressure relief component assembly method, which includes a feeding assembly that sequentially places a steel ball, a spring and a plugging pin into the valve hole of a stationary vortex disk, a high-precision servo press that squeezes the plugging pin toward the inside of the valve hole of the one-way valve, a high-frequency air pressure detector that detects the air pressure value in the closed one-way valve, and a control host that receives the detection data of the high-frequency air pressure detector and controls the operation of the high-precision servo press accordingly.

[0011] The automobile air-conditioning compressor pressure relief assembly assembly device described in the present invention is characterized in that the valve hole of the one-way valve is a through hole, and the steel ball, spring and blocking pin are sequentially inserted from the upper end of the through hole; the high-precision servo press is arranged directly above the one-way valve; and the air pressure detection head of the high-frequency air pressure detector is arranged directly below the one-way valve.

[0012] The automobile air-conditioning compressor pressure relief component assembly device described in the present invention, wherein the automobile air-conditioning compressor pressure relief component assembly device also includes a frame; the frame is provided with a first mounting plate for mounting the high-precision servo press, a second mounting plate for mounting the one-way valve, and a third mounting plate for mounting the air pressure detection head of the high-frequency air pressure detector in sequence from top to bottom; the second mounting plate is provided with a through hole corresponding to the air pressure detection head; the second mounting plate and the third mounting plate are connected by a plurality of elastic guide members.

[0013] The automobile air-conditioning compressor pressure relief assembly assembly device described in the present invention, wherein the elastic guide member includes a guide column and a buffer spring sleeved outside the guide column, and the buffer spring is located between the second mounting plate and the third mounting plate; the second mounting plate is penetrated by a guide sleeve sleeved outside the guide column.

[0014] The automobile air-conditioning compressor pressure relief assembly assembly device of the present invention is characterized in that a mounting assembly for detachably mounting the one-way valve is provided on the second mounting plate.

[0015] The automobile air-conditioning compressor pressure relief assembly assembly device of the present invention comprises: a plurality of mounting columns for supporting and mounting the third mounting plate are arranged on the frame; and the high-frequency air pressure detector is installed below the third mounting plate.

[0016] The beneficial effects of the present invention are as follows: after the implementation of the present invention, the assembly quality and efficiency of the one-way valve are greatly improved, and the influence of the drilling depth on the pressing result is avoided through the gas detection method; a large number of mechanical structures for contact steel ball measurement are reduced, the equipment cost is reduced, and the mechanical operation error of the contact steel ball measurement of the spring pressure is avoided, the outflow of defective products is prevented, the assembly efficiency is improved by more than 40%, and the pressing cycle can reach 30±1S. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0018] Figure 1 This is a flow chart of a method for assembling a pressure relief assembly of an automobile air-conditioning compressor according to a preferred embodiment of the present invention;

[0019] Figure 2 It is a flow chart of the segmented pressing mode of the assembly method of the automobile air-conditioning compressor pressure relief assembly of the preferred embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of an assembly device for a pressure relief assembly of an automobile air-conditioning compressor according to a preferred embodiment of the present invention;

[0021] Figure 4 It is a side view of an assembly device for a pressure relief assembly of an automobile air-conditioning compressor according to a preferred embodiment of the present invention;

[0022] Figure 5 It is a cross-sectional view of the press-fit detection of the automobile air-conditioning compressor pressure relief assembly assembly device according to a preferred embodiment of the present invention;

[0023] Figure 6 The present invention is a block diagram of the principle of press-fitting of an assembly device for a pressure relief assembly of an automobile air-conditioning compressor according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0025] The preferred embodiment of the present invention is a method for assembling a pressure relief assembly of an automobile air-conditioning compressor. Figure 1 See also Figure 2 , the implementation method is as follows:

[0026] S01: Place the steel ball, spring and plugging pin into the valve hole of the one-way valve of the static vortex in sequence;

[0027] S02: Close the valve hole of the one-way valve and use a high-frequency air pressure monitor to detect the air pressure value in the one-way valve;

[0028] S03: Pressing the plugging nail toward the inside of the one-way valve hole, and stopping the plugging nail pressing operation when the monitored air pressure value reaches a set value or is within a set range;

[0029] After the implementation of the present invention, the assembly quality and efficiency of the one-way valve are greatly improved. The air detection method is used to avoid the influence of the drilling depth on the pressing result. The large number of mechanical structures for contact steel ball measurement are reduced, the equipment cost is reduced, and the mechanical operation error of the contact steel ball measurement of the spring pressure is avoided, which prevents the outflow of defective products. The assembly efficiency is increased by more than 40%, and the pressing cycle can reach 30±1S.

[0030] Preferably, the valve hole of the one-way valve is a through hole; a steel ball, a spring and a blocking nail are placed in sequence at one end of the valve hole of the one-way valve, and the other end is sealed by an air pressure detection head of a frequency air pressure monitor; the detection air hole of the air pressure detection head is connected to the valve hole of the one-way valve; through this setting method, the cost is low and processing can be carried out quickly.

[0031] Preferably, the method further comprises:

[0032] S11: Set multiple groups of same or different set distances;

[0033] S12: When the monitored air pressure value does not reach the set value after the plugging nail is pressed into a set distance, the plugging nail continues to be pressed into the next set distance, and the above operation is repeated until the air pressure value is detected to be not less than the set value or not less than the minimum value of the set range interval, and then stops;

[0034] S13: If the detected air pressure value reaches the set value or is within the set range when the operation is stopped, it is considered qualified; if the detected air pressure value exceeds the set value or is greater than the maximum value of the set range when the operation is stopped, it is considered unsatisfactory;

[0035] After the high-performance servo press presses the set distance, the high-frequency air pressure detector is enabled, and the high-frequency output voltage analog is given to the high-performance servo press. The high-performance servo press presses the next set distance through analog value control, thereby forming a closed-loop control until the high-frequency air pressure detector detects that the one-way valve air pressure value reaches the set range and stops pressing, so as to achieve precise control requirements.

[0036] In this way, the spacing value for each step-by-step pressing can be set. When this method is used, the number of times the air pressure value is detected can be reduced. It is only necessary to detect the air pressure change value after pressing a spacing value each time. This method is also more conducive to product quality inspection and rejection of defective products.

[0037] Preferably, the method is also included: when executing the operation of pressing and plugging nails, the air pressure value detected by the high-frequency air pressure monitor is used to directly transmit the voltage value to the equipment executing the operation of pressing and plugging nails by using the pressure value analog quantity, and the equipment is controlled to stop according to the voltage value; the one-way valve air pressure value is detected by the high-frequency air pressure detector, and the voltage value is directly transmitted to the high-precision servo press controller by using the pressure value analog quantity to form a closed-loop control, and the pressing distance and pressing speed of the high-precision servo press are controlled according to the one-way valve air pressure value. When the set one-way valve air pressure value is reached, the high-precision servo press stops pressing and returns to its original position, and the product plugging nail pressing is completed; the control is convenient and the precision is high.

[0038] An automobile air-conditioning compressor pressure relief assembly assembly device is used to implement the above-mentioned automobile air-conditioning compressor pressure relief assembly assembly method, such as Figure 3-6 As shown, it includes a feeding assembly (not shown) for sequentially placing a steel ball 100, a spring 101 and a plugging pin 102 into a valve hole 10 of a stationary scroll, a high-precision servo press 2 for pressing the plugging pin 102 toward the inside of the valve hole 10 of the one-way valve 1, a high-frequency air pressure detector 3 for detecting the air pressure value in the closed one-way valve 1, and a control host 4 for receiving the detection data of the high-frequency air pressure detector 3 and controlling the operation of the high-precision servo press 2 accordingly;

[0039] Through the pneumatic detection method, a constant flow of gas is passed through the gap between the steel ball and the static vortex disk, and the air pressure value of the one-way valve is detected by a high-frequency air pressure detector to feedback the spring compression value, and the spring compression value is controlled by a high-performance servo press. After the implementation of the present invention, the assembly quality and efficiency of the one-way valve are greatly improved. Through the pneumatic detection method, the influence of the drilling depth on the press-fitting result is avoided; a large number of mechanical structures for contact steel ball measurement are reduced, the equipment cost is reduced, and the mechanical operation error of the contact steel ball spring pressure measurement is avoided, the outflow of defective products is prevented, the assembly efficiency is improved by more than 40%, and the press-fitting cycle can reach 30±1S;

[0040] In this application, the data interaction and control between the control host and the high-frequency air pressure detector and the high-precision servo press can be achieved by existing technical means;

[0041] Preferably, the valve hole of the one-way valve 1 is a through hole, and the steel ball 100, the spring 101 and the blocking pin 102 are sequentially inserted from the upper end of the through hole; the high-precision servo press 2 is arranged directly above the one-way valve 1; the air pressure detection head of the high-frequency air pressure detector 3 is arranged directly below the one-way valve 1; the detection is convenient.

[0042] Preferably, the automobile air-conditioning compressor pressure relief component assembly device also includes a frame 5; the frame 5 is provided with a first mounting plate 50 for mounting a high-precision servo press 2, a second mounting plate 51 for mounting a one-way valve 1, and a third mounting plate 52 for mounting an air pressure detection head 30 of a high-frequency air pressure detector 3 in sequence from top to bottom; the second mounting plate 51 is provided with a through hole corresponding to the air pressure detection head 30; the second mounting plate 51 and the third mounting plate 52 are connected by a plurality of elastic guide members 53; after the one-way valve 1 is locked on the second mounting plate, the steel ball 100, the spring 101 and the blocking nail 102 are sequentially placed in the valve hole of the one-way valve, the active end of the high-precision servo press 2 moves downward to squeeze the blocking nail, the second mounting plate 51 moves downward under the action of the elastic guide member, the air pressure detection head 30 presses against the lower end of the one-way valve 1, the active end of the high-precision servo press 2 continues to move downward, and the blocking nail is pressed into the valve hole, and the depth of the pressing can be reflected according to the reading of the air pressure detection head.

[0043] Preferably, the elastic guide member 53 includes a guide column 530 and a buffer spring 531 sleeved outside the guide column 530, and the buffer spring 531 is located between the second mounting plate 51 and the third mounting plate 52; a guide sleeve 532 sleeved outside the guide column 530 is provided through the second mounting plate 51; it has good stability and high precision.

[0044] Preferably, a mounting assembly 511 for detachably mounting the one-way valve 1 is provided on the second mounting plate 51, so as to facilitate the disassembly and assembly of the one-way valve.

[0045] Preferably, the frame 5 is provided with a plurality of mounting posts 54 for supporting and mounting the third mounting plate 52 ; the high-frequency air pressure detector is installed below the third mounting plate 52 .

[0046] Specific experimental data: The product parameters of the data collected by the present invention are as follows: The diameter of the installation hole of the one-way valve spring plug is The drilling depth is 12.4±0.05mm, the diameter of the one-way valve exhaust groove is 1.5mm, the diameter of the one-way valve hole is 1.5mm, the elastic coefficient of the spring is 4.15N / mm, when the air source pressure is 0.6±0.015MPa, the conduction detection time is 900-2400ms, and the termination pressure is 0.13±0.02MPa, which is qualified.

[0047] Therefore, it can be seen from this data that the error in the depth of the pressure relief hole is 0.1mm, and the corresponding change in the spring pressure value is 0.415N. According to the air pressure test control during actual production, the actual compression of the spring when the product is qualified is between 0.193mm and 0.205mm, and the allowable deviation value is 0.012mm, which ensures that the spring pressure value does not change due to processing errors and ensures the consistency of product quality.

[0048] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A method for assembling a pressure relief assembly of an automobile air-conditioning compressor, characterized in that: Here’s how to do it: Put a steel ball, a spring and a plugging nail into the valve hole of the one-way valve of the static vortex in sequence, close the valve hole of the one-way valve and use a high-frequency air pressure monitor to detect the air pressure value in the one-way valve, squeeze the plugging nail toward the inside of the valve hole of the one-way valve, and stop pressing the plugging nail when the air pressure value reaches a set value or is within a set range; the valve hole of the one-way valve is a through hole; a steel ball, a spring and a plugging nail are put into one end of the valve hole of the one-way valve in sequence, and the other end is blocked by the air pressure detection head of the frequency air pressure monitor; the detection air hole of the air pressure detection head is connected to the valve hole of the one-way valve ; It also includes a method: setting multiple groups of identical or different set distances, when the monitored air pressure value does not reach the set value after the blocking nail is pressed into a group of set distances, continue to press into the next group of set distances, and repeat the above operation until the air pressure value is detected to be not less than the set value or not less than the minimum value of the set range interval and stop; if the detected air pressure value reaches the set value or is within the set range interval when the operation is stopped, it is determined to be qualified; if the detected air pressure value exceeds the set value or is greater than the maximum value of the set range interval when the operation is stopped, it is determined to be unqualified.

2. The method for assembling a pressure relief assembly of an automobile air-conditioning compressor according to claim 1, characterized in that: It also includes a method: when performing a nail pressing operation, the air pressure value detected by the high-frequency air pressure monitor is used as a pressure value analog quantity to directly transmit a voltage value to a device performing the nail pressing operation, and the device is stopped according to the voltage value.

3. An assembly device for an automobile air-conditioning compressor pressure relief assembly, used to implement the assembly method for an automobile air-conditioning compressor pressure relief assembly according to any one of claims 1-2, characterized in that: It includes a feeding assembly for placing a steel ball, a spring and a plugging pin in sequence into the valve hole of a one-way valve of a static vortex disc, a high-precision servo press for squeezing the plugging pin toward the inside of the valve hole of the one-way valve, a high-frequency air pressure detector for detecting the air pressure value in the closed one-way valve, and a control host that receives the detection data of the high-frequency air pressure detector and controls the operation of the high-precision servo press accordingly.

4. The automobile air-conditioning compressor pressure relief assembly assembly device according to claim 3, characterized in that: The valve hole of the one-way valve is a through hole, and the steel ball, spring and blocking pin are sequentially inserted from the upper end of the through hole; the high-precision servo press is arranged directly above the one-way valve; the air pressure detection head of the high-frequency air pressure detector is arranged directly below the one-way valve.

5. The automobile air-conditioning compressor pressure relief assembly assembly device according to claim 4, characterized in that: The automobile air-conditioning compressor pressure relief component assembly device also includes a frame; the frame is provided with a first mounting plate for mounting the high-precision servo press, a second mounting plate for mounting the one-way valve, and a third mounting plate for mounting the air pressure detection head of the high-frequency air pressure detector in sequence from top to bottom; the second mounting plate is provided with a through hole corresponding to the air pressure detection head; the second mounting plate and the third mounting plate are connected by a plurality of elastic guide members.

6. The automobile air-conditioning compressor pressure relief assembly assembly device according to claim 5, characterized in that: The elastic guide member includes a guide column and a buffer spring sleeved outside the guide column, wherein the buffer spring is located between the second mounting plate and the third mounting plate; a guide sleeve sleeved outside the guide column is provided through the second mounting plate.

7. The automobile air-conditioning compressor pressure relief assembly assembly device according to claim 5, characterized in that: The second mounting plate is provided with a mounting assembly for detachably mounting the one-way valve.

8. The automobile air-conditioning compressor pressure relief assembly assembly device according to claim 5, characterized in that: The frame is provided with a plurality of mounting columns for supporting and mounting the third mounting plate; the high-frequency air pressure detector is installed below the third mounting plate.

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