testing authority

Abstract

The application provides a testing mechanism, which comprises a rack, a testing station for mounting a target workpiece arranged in the rack, a clamping component arranged on the rack and movably arranged to clamp the target workpiece, a door opening assembly arranged on the rack and comprising a pushing component and a pulling component, the pushing component is opposite to a lock arm on the target workpiece and movably arranged along a direction close to or away from the lock arm to push the lock arm to rotate and make the lock arm in an unlocking state, the pulling component is movably arranged and connected with a door body of the target workpiece to pull the door body to make the door body in an open position, and a locking component arranged on the rack and located at a side of the testing station, the locking component is movably arranged to push the door body to make the door body in a closed position. The application solves the problem that the testing mechanism in the prior art cannot test a medical refrigerator with an urgent door lock.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerator door opening and closing durability test, in particular to a test mechanism. BACKGROUND

[0002] At present, the test method and technical requirements of the durability test of the opening and closing of the medical refrigerator door are clearly specified in the national standard, and the door body and the opening and closing parts need to withstand 100000 times of opening and closing operation, and the structure and sealing function are not damaged after the experiment.

[0003] However, since the opening and closing of the door body of the medical refrigerator (such as the appearance patent CN306778316S) is realized by a forced door lock, and the opening and closing of the door body of the household refrigerator is realized by the attraction between the door seal magnetic strip and the cabinet, the device for testing the door of the household refrigerator in the prior art cannot be applied to the door of the medical refrigerator. SUMMARY

[0004] The main purpose of the present application is to provide a test mechanism to solve the problem that the test mechanism in the prior art cannot test the medical refrigerator with a forced door lock.

[0005] In order to achieve the above purpose, the present application provides a test mechanism, which comprises: a rack, a test station for mounting a target workpiece is arranged in the rack, the target workpiece comprises a door body, and a lock arm is arranged on the door body; a clamping component is arranged on the rack, the position of the clamping component is movably arranged, and the target workpiece is clamped by the clamping component; an opening door assembly is arranged on the rack, the opening door assembly comprises a pushing component and a pulling component, the pushing component is opposite to the lock arm on the target workpiece, and the pushing component is movably arranged in the direction of approaching or moving away from the lock arm to push the lock arm to rotate and make the lock arm in the unlocked state; the position of the pulling component is movably arranged and connected with the door body of the target workpiece, and the door body is opened by pulling the door body through the pulling component; a locking component is arranged on the rack and located on the side of the test station, and the position of the locking component is movably arranged to push the door body to the closed position.

[0006] Further, the clamping component comprises: a first clamping piece; a second clamping piece opposite to the first clamping piece, and the first clamping piece and the second clamping piece are movably arranged opposite to each other to clamp or release the target workpiece.

[0007] Further, the clamping component further comprises: a first driving rod, the first driving rod is telescopically arranged, and the first driving rod is drivingly connected with the first clamping piece; a second driving rod, the second driving rod is telescopically arranged, and the second driving rod is drivingly connected with the second clamping piece.

[0008] Further, the pushing component comprises a third driving rod arranged oppositely to the locking arm and being telescopically arranged, and a first buffer arranged at an end of the third driving rod and being moved by the third driving rod to push the locking arm.

[0009] Further, the pulling component comprises a rotating plate rotatably arranged around a first predetermined axis, and a connecting piece having two ends connected with the door body and the rotating plate respectively, wherein the connecting piece is a flexible piece.

[0010] Further, the testing mechanism further comprises a transmission assembly comprising a transmission shaft rotatable around an axis thereof, and the transmission shaft is connected with the rotating plate, wherein the rotating plate extends in a horizontal direction and the transmission shaft extends in a vertical direction.

[0011] Further, the transmission assembly further comprises a power component having a telescopically arranged piston rod, and a connecting crank arranged at a driving end of the piston rod and connected with the piston rod and the transmission shaft respectively, and the piston rod drives the transmission shaft to rotate through the connecting crank.

[0012] Further, the testing mechanism further comprises an extending support arranged on the frame and located at a side of the frame, and the locking component is arranged on the extending support.

[0013] Further, the locking component comprises a fourth driving rod telescopically arranged, and the extending direction of the fourth driving rod has an included angle with a horizontal plane, and a second buffer arranged at a driving end of the fourth driving rod and pushing the door body to the closed position through the fourth driving rod.

[0014] Further, the testing mechanism further comprises a control module arranged on the frame, and the clamping component, the door opening assembly and the locking component are connected with the control module respectively.

[0015] The application discloses a test mechanism, and belongs to the technical field of medical refrigerator door lock testing. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the specification of the application are used to provide further understanding of the application, the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitation on the application. In the drawings:

[0017] Figure 1 A front view of the test mechanism according to the application is shown;

[0018] Figure 2 A top view of the test mechanism according to the application is shown;

[0019] Figure 3 A right view of the test mechanism according to the application is shown;

[0020] Figure 4 A left view of the test mechanism according to the application is shown;

[0021] Figure 5 A control flow chart of the test mechanism according to the application is shown.

[0022] In the above drawings, the following reference signs are used:

[0023] 100, test station; 1, frame; 2, clamping component; 21, first clamping piece; 22, second clamping piece; 23, first driving rod; 24, second driving rod; 3, door opening assembly; 30, pushing component; 301, third driving rod; 302, first buffer piece; 31, pulling component; 310, rotating plate; 4, locking component; 40, fourth driving rod; 41, second buffer piece; 5, transmission assembly; 50, transmission shaft; 51, power component; 52, connecting crank; 6, extension support; 7, control module. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference should be made to Figures 1 to 4 The present application provides a test mechanism, comprising: a frame 1, a test station 100 for mounting a target workpiece is arranged in the frame 1, the target workpiece comprises a door body, and a lock arm is arranged on the door body; a clamping component 2 arranged on the frame 1, the position of the clamping component 2 is movably arranged, and the target workpiece is clamped by the clamping component 2; a door opening assembly 3 arranged on the frame 1, the door opening assembly 3 comprises a pushing component 30 and a pulling component 31, the pushing component 30 is opposite to the lock arm on the target workpiece, and the pushing component 30 is movably arranged in the direction of approaching or moving away from the lock arm to push the lock arm to rotate and make the lock arm in an unlocking state; the position of the pulling component 31 is movably arranged and connected with the door body of the target workpiece, and the door body is pulled to an open position by the pulling component 31; a locking component 4 arranged on the frame 1 and located at the side of the test station 100, the position of the locking component 4 is movably arranged to push the door body to a closed position.

[0026] The testing mechanism provided by the application comprises a rack 1, a clamping component 2, an opening door assembly 3 and a locking component 4. The rack 1 is provided with a testing station 100 for mounting a target workpiece. The target workpiece comprises a door body, and the door body is provided with a lock arm. The clamping component 2 is arranged on the rack 1 and is movably arranged. The clamping component 2 clamps the target workpiece. The opening door assembly 3 is arranged on the rack 1 and comprises a pushing component 30 and a pulling component 31. The pushing component 30 is opposite to the lock arm of the target workpiece and is movably arranged along the direction of approaching or moving away from the lock arm to push the lock arm to rotate and make the lock arm in an unlocking state. The pulling component 31 is movably arranged and connected with the door body of the target workpiece. The pulling component 31 pulls the door body to make the door body in an open position. The locking component 4 is arranged on the rack 1 and is movably arranged at the side of the testing station 100 to push the door body to the closed position. The application takes the opening and closing door test of a medical refrigerator as an example. In the testing process, the medical refrigerator is placed on the testing station 100, then clamped by the clamping component 2, the pushing component 30 is controlled to push out and push the lock arm of the medical refrigerator to open, at the same time, the pulling component 31 pulls the door body outward to make the refrigerator door open, then the locking component 4 pushes out to push the door body to the closed position, and then the cycle is performed to test the medical refrigerator door with a panic lock.

[0027] Specifically, the clamping component 2 comprises a first clamping piece 21 and a second clamping piece 22 opposite to the first clamping piece 21. The first clamping piece 21 and the second clamping piece 22 are movably arranged opposite to each other to clamp or release the target workpiece. The first clamping piece 21 and the second clamping piece 22 are elastic pieces, for example, rubber, sponge or silica gel, to avoid scratching the target workpiece in the clamping process.

[0028] Further, the clamping component 2 further comprises a first driving rod 23 and a second driving rod 24. The first driving rod 23 is telescopically arranged and drivingly connected with the first clamping piece 21. The second driving rod 24 is telescopically arranged and drivingly connected with the second clamping piece 22. Preferably, the first driving rod 23 and the second driving rod 24 are piston rods of air cylinders. The structure is simple and the first clamping piece 21 and the second clamping piece 22 are conveniently controlled to move.

[0029] In the application, the pushing component 30 comprises a third driving rod 301 opposite to the lock arm and telescopically arranged, and a first buffer 302 arranged at the end of the third driving rod 301. The first buffer 302 is driven by the third driving rod 301 to move to push the lock arm. Preferably, the first buffer 302 is made of rubber, sponge or silica gel, and the third driving rod 301 is a piston rod of an air cylinder to push the lock arm of the lock body to open.

[0030] In the embodiment, the pulling component 31 comprises a rotating plate 310 rotatably arranged around a first predetermined axis, and a connecting piece, two ends of the connecting piece being connected with the door body and the rotating plate 310 respectively, wherein the connecting piece is a flexible piece, the door body is provided with a suction cup, and the connecting piece is connected with the door body through the suction cup. Preferably, the connecting piece is a rope body, and the door body is opened by rotating the rotating plate 310 to drive the connecting piece.

[0031] Further, the pulling component 31 further comprises a supporting column arranged at the side of the rotating plate 310, and a limiting block arranged on the supporting column, when the connecting piece pulls the door body to open to contact with the limiting block, the rotating plate 310 stops rotating, and the locking component 4 starts to operate.

[0032] In the embodiment, the test mechanism further comprises a transmission assembly 5, the transmission assembly 5 comprises a transmission shaft 50 rotatable around an axis thereof, and the transmission shaft 50 is connected with the rotating plate 310, wherein the rotating plate 310 extends along a horizontal direction, and the transmission shaft 50 extends along a vertical direction. In this way, the rotating plate 310 is driven to rotate by rotating the transmission shaft 50.

[0033] In the embodiment, the transmission assembly 5 further comprises a power component 51 having a telescopic piston rod, and a connecting crank 52 arranged at a driving end of the piston rod, the connecting crank 52 being connected with the piston rod and the transmission shaft 50 respectively, and the piston rod drives the transmission shaft 50 to rotate through the connecting crank 52. In this way, the overall structure is more compact, and preferably, the power component 51 is a pneumatic cylinder, the connecting crank 52 drives the transmission shaft 50 to rotate by the telescopic action of the piston rod of the pneumatic cylinder, and the rotating angle of the rotating plate 310 is conveniently controlled.

[0034] In the embodiment, the test mechanism further comprises an extending support 6 arranged on the rack 1 and located at the side of the rack 1, and the locking component 4 is arranged on the extending support 6. In this way, the locking component 4 is conveniently supported, and the locking component 4 can timely close the door body.

[0035] Specifically, the locking component 4 comprises a fourth driving rod 40 telescopically arranged, and an angle between an extension direction of the fourth driving rod 40 and a horizontal plane is arranged, and a second buffer 41 arranged at a driving end of the fourth driving rod 40, and the door body is pushed to a closed position by the fourth driving rod 40. Preferably, the fourth driving rod 40 is a piston rod of a pneumatic cylinder, and the fourth driving rod 40 is arranged obliquely by arranging the angle between the extension direction of the fourth driving rod 40 and the horizontal plane, so as to avoid interference of the fourth driving rod with the door body when the door body is opened, and meanwhile, the installation space occupied by the test mechanism is also reduced.

[0036] In specific implementation, the testing mechanism further comprises a control module 7 arranged on the rack 1, and the clamping component 2, the door opening assembly 3 and the locking component 4 are respectively connected with the control module 7. The clamping component 2, the door opening assembly 3 and the locking component 4 are controlled by the control module 7 respectively, so as to realize the test of the opening and closing of the door body of the medical refrigerator together.

[0037] The application can test the medical refrigerator door body with the urgent door lock, improve the applicability and diversity of the testing device, meet the testing requirements of the medical refrigerator and similar products, improve the mechanical and automatic degree of the testing, minimize the errors caused by human operation and human calculation, ensure the accuracy and consistency of the test, reduce the cost of human and material resources, improve the stability of the testing process, reduce the invalid time consumption, avoid the damage to the testing prototype, improve the testing efficiency, accelerate the exposure of quality problems, set the action time and action times of each testing mechanism by the PLC programmable controller, drive the action of the cylinder and the transmission shaft, use the pushing and pulling force of the cylinder to drive the extension and retraction of each driving rod, open and close, so as to realize the automatic and accurate control of the whole process of opening and closing, locking, opening and closing, and realize the purpose of automatic durability test of the opening and closing under the condition of meeting the testing standard requirements; by designing the urgent door lock opening and closing mechanism, using the pushing and pulling force of the cylinder to drive the action of the door opening and closing mechanical arm, under the condition of meeting the durability test requirements of the door handle, the low-temperature preservation box can be freely opened and closed in the direction of the door handle; by designing the protection system module, when the driving rod deviates from the preset program and other abnormal operation conditions, the automatic testing system triggers the alarm system, each driving rod immediately stops the current action, synchronously sends the buzzer alarm, prompts the experimenters to intervene, so as to prevent irreversible mechanical damage to the testing prototype.

[0038] As Figure 5As shown, in the specific use process, the test sample machine is placed in the test station 100 formed by the rack 1, the test sample machine (target workpiece) door body is closed, the distance between the sample machine and each mechanism is adjusted, the test sample machine is clamped and fixed on both sides by the clamping part 2, the clamping part 2 is in contact with both sides of the sample machine through the first clamping part 21 and the second clamping part 22, so that the sample machine is in a more favorable test position, and the stability of the test equipment during operation is ensured; the test equipment power supply is turned on, each mechanism is automatically reset, the suction cup is installed on the door body surface, the connecting piece is connected with the pulling part 31, then the cylinder stroke and air pressure of each component are debugged, so that the pushing and pulling force acting on the test sample machine is within a suitable range, and mutual interference between the equipment is prevented; the control interface of the control module 7 is clicked, parameter setting is performed, the door opening time and door opening times of each driving rod are specifically set, then pre-debugging before testing is performed, after ensuring that each parameter is debugged without error, running is clicked, and testing starts; the cylinder in the pushing part 30 is extended by a preset length, the pushing force applied drives the unlocking arm to move, the second buffer 41 is in contact with the forced door lock, the door lock is opened forward, and simultaneously drives the door body to open outward, when the unlocking action is completed, the pushing part 30 is automatically retracted and reset; the piston rod of the power part 51 is synchronously retracted, drives the transmission shaft 50 to rotate counterclockwise, and the door opening assembly 3 swings outward to a preset angle, the pulling force is applied through the connecting piece to open the door, so that the door is stopped when the door is opened to 45°, and the soft rubber block at the front end of the door opening assembly 3 also plays a protection and buffering role; after the door is stable, under the premise of meeting the test requirements, the piston rod of the power part 51 is extended, the pushing force is applied to drive the transmission shaft 50 to rotate clockwise, the door opening assembly 3 swings inward, and the door is tightly closed through the soft rubber block; after the door is closed, the cylinder of the locking part 4 is extended, the pushing force is applied to close the door lock, and one door opening and closing action is completed, the first buffer 302 at the front end of the pushing part 30 and the second buffer 41 at the front end of the locking part 4 both play a protection and buffering role; according to the preset door opening times and door opening time, the test equipment is repeatedly controlled by the PLC system to perform the door opening and closing action until the set door opening times are completed, and each mechanism is reset; if the PLC receives an abnormal signal or other abnormal conditions during testing, it indicates that the system has a fault, the PLC will immediately control the test system to stop working, record and save the completed door opening and closing times, and simultaneously issue a buzzer alarm to prompt the test personnel to intervene in troubleshooting, and continue testing after the fault is repaired by human intervention.

[0039] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0040] The testing mechanism provided by the application comprises a rack 1, a clamping component 2, an opening door assembly 3 and a locking component 4. The rack 1 is provided with a testing station 100 for mounting a target workpiece. The target workpiece comprises a door body, and the door body is provided with a locking arm. The clamping component 2 is arranged on the rack 1 and is movably arranged at a position. The clamping component 2 clamps the target workpiece. The opening door assembly 3 is arranged on the rack 1 and comprises a pushing component 30 and a pulling component 31. The pushing component 30 is opposite to the locking arm of the target workpiece and is movably arranged along a direction close to or away from the locking arm to push the locking arm to rotate and make the locking arm in an unlocking state. The pulling component 31 is movably arranged at a position and is connected with the door body of the target workpiece. The pulling component 31 pulls the door body to make the door body in an open position. The locking component 4 is arranged on the rack 1 and is located at a side of the testing station 100. The locking component 4 is movably arranged at a position to push the door body to a closed position. The application takes the opening and closing door test of a medical refrigerator as an example. During the test, the medical refrigerator is placed on the testing station 100, then clamped by the clamping component 2, the pushing component 30 is controlled to push out and push the locking arm of the medical refrigerator to open, at the same time, the pulling component 31 pulls the door body outward to make the refrigerator door open, then the locking component 4 pushes out to push the door body to the closed position, and then the cycle is performed to test the medical refrigerator door with a panic bar.

[0041] The above only describes the preferred embodiments of the application and is not used to limit the application. The application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A testing mechanism, characterized in that, include: A frame (1) is provided with a test station (100) for installing a target workpiece. The target workpiece includes a door body and a locking arm is provided on the door body. A clamping component (2) is provided on the frame (1). The position of the clamping component (2) is movably provided, and the target workpiece is clamped by the clamping component (2). The door opening assembly (3) is disposed on the frame (1). The door opening assembly (3) includes a push-out component (30) and a pull component (31). The push-out component (30) is opposite to the locking arm on the target workpiece. The push-out component (30) is movably disposed in a direction close to or away from the locking arm to push the locking arm to rotate so that the locking arm is in the unlocked state. The position of the pulling component (31) is movably set and connected to the door of the target workpiece. The door is pulled by the pulling component (31) to make the door open. A locking component (4) is provided on the frame (1) and located on the side of the test station (100). The position of the locking component (4) is movably provided to push the door to the closed position. The ejection component (30) includes: a third drive rod (301) opposite to the locking arm, the third drive rod (301) being telescopically configurable; The first buffer (302) is disposed at the end of the third drive rod (301). The first buffer (302) is moved by the third drive rod (301) to push the locking arm. The pulling component (31) includes: a rotating plate (310) rotatably disposed about a first predetermined axis; A connector, the two ends of which are respectively connected to the door body and the rotating plate (310), wherein the connector is a flexible component; The pulling component (31) also includes a support column, which is located on the side of the rotating plate (310). A limit block is provided on the support column. When the connector pulls the door open to contact the limit block, the rotating plate (310) stops rotating and the locking component (4) starts to operate.

2. The testing mechanism according to claim 1, characterized in that, The clamping component (2) includes: First clamping element (21); The second clamping member (22) is opposite to the first clamping member (21), and the first clamping member (21) and the second clamping member (22) are movably arranged relative to each other to clamp or release the target workpiece.

3. The testing mechanism according to claim 2, characterized in that, The clamping component (2) further includes: The first drive rod (23) is telescopically configured and is drivenly connected to the first clamping member (21); The second drive rod (24) is telescopically oriented and is drivenly connected to the second clamping member (22).

4. The testing mechanism according to claim 1, characterized in that, The testing facility also includes: The transmission assembly (5) includes a transmission shaft (50) rotatable about its own axis, the transmission shaft (50) being connected to the rotating plate (310). The rotating plate (310) extends horizontally, and the transmission shaft (50) extends vertically.

5. The testing mechanism according to claim 4, characterized in that, The transmission assembly (5) also includes: A power unit (51) having a retractable piston rod; A connecting crank (52) is provided at the driving end of the piston rod. The connecting crank (52) is connected to the piston rod and the transmission shaft (50) respectively. The piston rod drives the transmission shaft (50) to rotate through the connecting crank (52).

6. The testing mechanism according to claim 1, characterized in that, The testing facility also includes: An extension bracket (6) is provided on the frame (1) and located on the side of the frame (1), and the locking component (4) is provided on the extension bracket (6).

7. The testing mechanism according to claim 1, characterized in that, The locking component (4) includes: A fourth drive rod (40) is telescopically configured, and the extension direction of the fourth drive rod (40) has an angle with the horizontal plane; The second buffer (41) is disposed at the driving end of the fourth drive rod (40) and pushes the door to the closed position through the fourth drive rod (40).

8. The testing mechanism according to claim 1, characterized in that, The testing facility also includes: The control module (7) is mounted on the frame (1), and the clamping component (2), the door opening component (3) and the locking component (4) are respectively connected to the control module (7).

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