Multifunctional constant temperature and humidity testing machine

Abstract

The invention belongs to the technical field of constant-temperature and constant-humidity testing machines, and particularly relates to a multifunctional constant-temperature and constant-humidity testing machine which comprises a machine body, a placement plate and the like. And a plurality of placing plates are arranged in the machine body. According to the invention, the magnetic strip in the groove at the front part of the placing plate adsorbs the counterweight strip I, meanwhile, all the shielding curtains on the roller shutter are also in a put-down state, and the magnetic strip adsorbs the counterweight strip II, so that the shielding curtains and the roller shutter are combined to shield the front part of the machine body, and then a test workpiece is placed in the machine body. According to the constant-temperature and constant-humidity test machine, the test workpieces are borne through the placement plate, the machine body is controlled, so that the interior of the machine body is in a constant-temperature and constant-humidity state, the temperature and humidity in the machine body are detected in real time through the adjusting assembly, and therefore constant-temperature and constant-humidity test on the test workpieces is achieved; therefore, the temperature and humidity change of air in the machine body is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of constant temperature and humidity testing machines, and in particular relates to a multifunctional constant temperature and humidity testing machine. Background Art

[0002] Constant temperature and humidity testing machine is a kind of equipment used to simulate various environmental conditions for experiments and tests. It can control the temperature and humidity in the box to keep it at a stable level to meet the needs of different experimental conditions. It is widely used in electronics, electrical engineering, instrumentation, plastics, metals, food, chemical industry, textile and other industries; When testing workpieces, the constant temperature and humidity tester sometimes needs to open the door to take out, add, remove or replace the test workpieces. However, once the door is opened, the air inside the tester convects with the outside world, which will cause significant changes in the temperature and humidity of the air inside the tester. In order to restore to the preset temperature and humidity state, the tester needs to consume more energy, thereby increasing the overall energy consumption; Based on the existing technology, the existing constant temperature and humidity test machine will protect the door of the box by setting a door curtain to prevent the problem of large-scale leakage of air in the test machine after the constant temperature and humidity test machine is turned on. However, the ordinary door curtain will affect the placement of the workpiece; When it is necessary to simulate the state of the same type of workpiece under different temperature and humidity conditions, multiple tests need to be carried out reciprocatingly to know the performance of the workpiece under different temperature and humidity conditions. The operation is more cumbersome and the energy consumption will increase. When ordinary door curtains are used, the various spaces in the testing machine will be interconnected, affecting the test accuracy. Summary of the invention

[0003] In order to overcome the disadvantage that the door of the testing machine is opened, causing convection between the air inside the testing machine and the outside, resulting in increased energy consumption of the testing machine, the present invention provides a multifunctional constant temperature and humidity testing machine.

[0004] The technical solution of the present invention is: a multifunctional constant temperature and humidity testing machine, including a body and a placement plate; a plurality of placement plates are arranged in the body, and the interior of the body is divided into a plurality of spaces by the placement plates; it also includes a baffle I, a motor, a transmission shaft, a rolling curtain and a shielding curtain; at least three baffles I are fixedly connected in the body; at least three motors are fixedly connected to the body; the output shaft of each motor is fixedly connected to a transmission shaft; all transmission shafts are rotatably connected to the body; a rolling curtain is wound on each transmission shaft; at least five shielding curtains are arranged on each rolling curtain, and the shielding curtains are made of transparent rubber material.

[0005] More preferably, a timing alarm is installed on the machine body.

[0006] More preferably, the rolling curtain is made of high temperature resistant rubber material, and a counterweight bar I is fixedly connected to the lower part of the rolling curtain, and the counterweight bar I is made of iron.

[0007] More preferably, a sealing strip is provided between the rolling curtain and the shielding curtain.

[0008] More preferably, a counterweight bar II is fixedly connected to the lower portion of the blackout curtain, and the counterweight bar I is made of iron.

[0009] More preferably, a groove is provided at the front of the placement plate, and a magnetic strip is installed in the groove.

[0010] More preferably, the upper edge of the groove opened at the front of the placement plate is arranged to be inclined.

[0011] More preferably, it also includes an electric actuator, a connecting rod and a baffle II; each placement plate is provided with a plurality of circular holes, and at least three electric actuators are fixedly connected to the inner side of the body; each telescopic portion of the electric actuator is fixedly connected to a connecting rod; all connecting rods are slidably connected to the body; each connecting rod is fixedly connected to a plurality of baffles II; the middle portion of the placement plate is a hollow structure, and all baffles II on the same connecting rod are slidably connected to a corresponding placement plate.

[0012] More preferably, it also includes a pick-up and placement system; the pick-up and placement system is connected to the fixed plate; the pick-up and placement system consists of a connecting rod, a button, a convex strip, a hanging ring, an L-shaped rod and an elastic member; at least three connecting rods are slidably connected to the fixed plate; a button is fixedly connected to each connecting rod; at least five convex strips are fixedly connected to each connecting rod; the button and all the convex strips pass through the baffle I and protrude from the baffle I; a hanging ring is fixedly connected to the lower front side of each shielding curtain; at least two L-shaped rods are fixedly connected to the lower surface of each baffle I; all L-shaped rods on the same baffle I are slidably connected to a corresponding connecting rod; an elastic member is sleeved on the outer side of the lower part of each L-shaped rod, the elastic member is a spring, one end of the elastic member is fixedly connected to the L-shaped rod, and the other end of the elastic member is fixedly connected to the connecting rod.

[0013] More preferably, the hanging ring is made of rubber.

[0014] The advantages and positive effects of the present invention are: (1) The counterweight strip I is attracted by the magnetic strip in the groove at the front of the placement plate. At the same time, all the shielding curtains on the rolling curtain are also in the lowered state, and the counterweight strip II is attracted by the magnetic strip, so that the shielding curtain and the rolling curtain combination shield the front of the machine body. Then the test workpiece is placed in the machine body, and the test workpiece is supported by the placement plate. Then the machine body is controlled so that the interior of the machine body is in a constant temperature and humidity state. The temperature and humidity inside the machine body are detected in real time by adjusting the components, so as to realize the constant temperature and humidity test of the test workpiece.

[0015] (2) Through the multi-layer hollow tempered glass and the shielding curtain installed on the box door, the state of the test workpiece is observed, and the specific position of the test workpiece to be removed, increased, decreased, or replaced is determined, and then the electric actuator is controlled to start, and the electric actuator starts to drive the connecting rod to move, and the movement of the connecting rod drives the corresponding baffle II to move, and then the baffle II is used to block the multiple circular holes on the placement plate, so that the placement plate, the roller shutter, the shielding curtain and the machine body form a closed space, that is, the test workpiece to be removed, increased, decreased, or replaced is placed in a closed space, and then the corresponding shielding curtain is squeezed to remove the corresponding test workpiece, so that in the process of removing the test workpiece, or increasing, decreasing, or replacing the test workpiece, it is only necessary to open the corresponding shielding curtain, thereby reducing the convection between the air in the machine body and the outside air, thereby reducing the temperature and humidity changes of the air in the machine body, and thereby reducing the energy consumption of restoring to the preset temperature and humidity. The state and position of the test workpiece can be observed through the multi-layer hollow tempered glass and the shielding curtain installed on the box door, so that the process of taking and placing the test workpiece is more convenient.

[0016] (3) The rolling curtain is driven by the rotation of the transmission shaft, and the movement of the rolling curtain drives the corresponding shielding curtain to move, so that the rolling curtain and all the shielding curtains are rolled up on the transmission shaft and stored on the inner side of the baffle I. Then, all the test workpieces in the machine body are taken out, thereby effectively improving the efficiency of taking out the test workpieces.

[0017] (4) The corresponding rolling curtain, the corresponding blocking curtain and the corresponding baffle II can be combined with the machine body to form three independent enclosed spaces, so that the test workpiece can form a control group when conducting the test, that is, the test workpiece of the same model can be placed in three different independent enclosed spaces, and the temperature and humidity in the three independent enclosed spaces are different, so that the changes of the test workpiece under different temperature and humidity conditions can be known, thereby making the functional diversity of the machine body and being able to more comprehensively know the performance of the test workpiece under different temperature and humidity conditions.

[0018] (5) By pulling the hanging ring upward, the hanging ring is hung on the corresponding convex strip. The movement of the hanging ring drives the shielding curtain to move, and then the shielding curtain is bent upward. The shielding curtain is opened and the test workpiece is then taken manually, thereby improving the convenience of taking the test workpiece.

[0019] (6) The door squeezes the connecting rod, causing the connecting rod to move and drive the corresponding convex strip to move backward, compressing the corresponding elastic member, causing the corresponding hanging ring to fall off the convex strip, and the elasticity of the blackout curtain itself and the gravity of the counterweight bar II cause the blackout curtain to fall, thereby resetting the blackout curtain and combining with the roller blind to block the front of the machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the three-dimensional structure of the multifunctional constant temperature and humidity testing machine of the present invention; Figure 2 This is a schematic diagram of the multifunctional constant temperature and humidity test cabinet door opening state of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the multifunctional constant temperature and humidity testing machine body, the placement plate, the adjustment assembly and the baffle I of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the multifunctional constant temperature and humidity test machine body, baffle I, motor, transmission shaft, roller blind, electric actuator and connecting rod combination of the present invention; Figure 5 It is a schematic diagram of the installation positions of the rolling curtain and the shielding curtain of the multifunctional constant temperature and humidity testing machine of the present invention; Figure 6 It is a schematic diagram of the installation positions of the magnetic strip, the counterweight strip I and the counterweight strip II of the multifunctional constant temperature and humidity testing machine of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the pick-and-place system of the multifunctional constant temperature and humidity testing machine of the present invention; Figure 8 The present invention is a schematic diagram of the three-dimensional structure of the multifunctional constant temperature and humidity testing machine baffle I, connecting rods, convex strips, L-shaped rods and elastic parts.

[0021] Markings in the figure are: 1-body, 11-door, 12-placing plate, 121-round hole, 122-magnetic strip, 13-fixing plate, 14-adjusting component, 201-baffle I, 202-motor, 203-drive shaft, 204-rolling curtain, 2041-counterweight bar I, 205-shielding curtain, 2051-counterweight bar II, 206-electric actuator, 207-connecting rod, 208-baffle II, 301-connecting rod, 3011-button, 302-convex strip, 303-hanging ring, 304-L-shaped rod, 305-elastic part. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0023] Embodiment 1 A multifunctional constant temperature and humidity testing machine, based on Figure 1-Figure 6 As shown, it includes an organism 1 and a placement plate 12; a plurality of placement plates 12 are arranged in the organism 1, and the interior of the organism 1 is divided into a plurality of spaces by the placement plates 12; It also includes a baffle I 201, a motor 202, a transmission shaft 203, a rolling curtain 204 and a shielding curtain 205; three baffles I 201 are fixedly connected to the inner front part of the body 1; three motors 202 are fixedly connected to the upper right part of the body 1; the output shaft of each motor 202 is fixedly connected to a transmission shaft 203; all transmission shafts 203 are rotatably connected to the body 1, and each transmission shaft 203 is located on the inner side of the corresponding baffle I 201; a rolling curtain 204 is wound around each transmission shaft 203, and the rolling curtain 204 is made of transparent rubber; five shielding curtains 205 are arranged on each rolling curtain 204, and the shielding curtains 205 are made of transparent rubber.

[0024] A timer alarm is installed on the machine body 1 to emit a prompt sound after the test is completed to remind the on-site staff that the test is completed.

[0025] The rolling curtain 204 is made of high temperature resistant rubber material, and a counterweight bar Ⅰ2041 is fixedly connected to the lower part of the rolling curtain 204, and the counterweight bar Ⅰ2041 is made of iron material.

[0026] A sealing strip is provided between the rolling curtain 204 and the shielding curtain 205 to enhance the sealing between the rolling curtain 204 and the shielding curtain 205 .

[0027] A counterweight bar II 2051 is fixedly connected to the lower part of the shielding curtain 205, and the counterweight bar I 2041 is made of iron.

[0028] The body 1 includes a door 11, a fixing plate 13 and an adjusting component 14; the door 11 is hinged at the front of the body 1, a handle is provided on the door 11, and multi-layer hollow tempered glass is installed on the door 11, so that the operator can observe the operation of the equipment and the material status, and ensure the smooth progress of the test process; a fixing plate 13 is fixedly connected to the left side of the inner side of the body 1, which is used to cooperate with the handle on the door 11; three adjusting components 14 for adjusting the temperature and humidity in the body 1 are connected to the inner side of the body 1, and each adjusting component 14 is composed of a temperature sensor and a humidity sensor.

[0029] A groove is formed at the front of the placement plate 12, and a magnetic strip 122 is installed in the groove.

[0030] The upper edge of the groove opened at the front of the placement plate 12 is set to be inclined so that the counterweight bar I2041 can be easily inserted into the groove.

[0031] It also includes an electric actuator 206, a connecting rod 207 and a baffle II 208; each placement plate 12 is provided with a plurality of circular holes 121, and three electric actuators 206 are fixedly connected to the right inner side of the body 1, and the electric actuators 206 are electric push rods; the telescopic part of each electric actuator 206 is fixedly connected to a connecting rod 207; all the connecting rods 207 are slidably connected to the body 1; each connecting rod 207 is fixedly connected to a plurality of baffles II 208; the middle part of the placement plate 12 is a hollow structure, and all baffles II 208 on the same connecting rod 207 are slidably connected to a corresponding placement plate 12.

[0032] When the multifunctional constant temperature and humidity testing machine is in use, for the convenience of description, the topmost rolling curtain 204 and the corresponding shielding curtain 205 will be taken as an example. The initial state of the rolling curtain 204 is the lowered state, that is, the end of the rolling curtain 204 away from the transmission shaft 203 is located in the groove at the front of the placement plate 12, and the counterweight strip I 2041 is adsorbed by the magnetic strip 122 in the groove at the front of the placement plate 12. At the same time, all the shielding curtains 205 on the rolling curtain 204 are also in the lowered state, and the counterweight strip II 2051 is adsorbed by the magnetic strip 122, so that the shielding curtain 205 and the rolling curtain 204 are combined to block the front of the machine body 1, as shown in FIG. Figure 2 As shown, the test workpiece is then placed. During the placement process, the box door 11 is manually opened in advance, and the workpiece is manually held and the corresponding shielding curtain 205 is squeezed, so that the shielding curtain 205 is rotated toward the inner rear side of the body 1 with the front side of the baffle Ⅰ201 as the reference, thereby placing the test workpiece on the placement plate 12, and then the box door 11 is closed, and then the operation of the body 1 is controlled. The interior of the body 1 is kept in a constant temperature and humidity state through a preset program, and the temperature and humidity inside the body 1 are detected in real time through the adjustment component 14, thereby realizing a constant temperature and humidity test on the test workpiece.

[0033] During the test of the machine body 1, it is sometimes necessary to open the box door 11 to take out the test workpiece, or to add, reduce or replace the test workpiece. After the box door 11 is opened, the air in the machine body 1 will convect with the outside air, which will cause a large change in the temperature and humidity of the air in the machine body 1. As a result, the machine body 1 needs to consume more energy to restore to the preset temperature and humidity state, which increases energy consumption. In order to solve the above problem, during the process of placing the test workpiece into the machine body 1, the shielding curtain 205 and the rolling curtain 204 are combined to block the front of the machine body 1, and during the placement process, the corresponding shielding curtain 205 needs to be squeezed to place the test workpiece on the placement plate 12, and the shielding curtain 205 is made of transparent rubber, which means that the position of the test workpiece on the placement plate 12 can be seen through the shielding curtain 205, so that when taking out the test workpiece, or adding, reducing or replacing the test workpiece, the state of the test workpiece is observed manually in advance through the multi-layer hollow tempered glass installed on the box door 11, and the specific position of the test workpiece to be taken out, added, reduced or replaced is determined, and then the box door 11 is opened, and then the corresponding electric actuator 206 is started through program control, and the electric actuator 206 starts to drive the connecting rod 207 to move, and the movement of the connecting rod 207 drives the corresponding baffle II 208 to move, and then the baffle II 208 blocks the multiple circular holes 121 on the placement plate 12, so that the placement plate 12 , rolling curtain 204, shielding curtain 205 and body 1 form a closed space, so that the required removal, increase, decrease, or replacement of the test workpiece is in a closed space, and the remaining space in the body 1 can still be used for normal constant temperature and humidity test, and then the corresponding shielding curtain 205 is squeezed manually according to the specific position of the test workpiece, so that the shielding curtain 205 rotates backward with the front side of the baffle Ⅰ 201 as the reference, and the corresponding test workpiece is taken out, and the same is true in the process of increasing, decreasing, or replacing the test workpiece, so that when taking out the test workpiece, or when adding, decreasing, or replacing the test workpiece, it is only necessary to open the corresponding shielding curtain 205, thereby reducing the convection between the air in the body 1 and the outside air, thereby reducing the temperature and humidity changes of the air in the body 1, and thereby reducing the energy consumption for restoring to the preset temperature and humidity, and the state and position of the test workpiece can be observed through the multi-layer hollow tempered glass and the shielding curtain 205 installed on the box door 11, so that the process of taking and placing the test workpiece can be made more convenient.

[0034] When it is necessary to take out all the test workpieces on the top layer, in order to improve the efficiency of taking out the test workpieces, the corresponding motor 202 is controlled to start, and the output shaft of the motor 202 rotates to drive the transmission shaft 203 to rotate, and the rotation of the transmission shaft 203 drives the rolling curtain 204 to move, and the movement of the rolling curtain 204 drives the corresponding shielding curtain 205 to move, so that the rolling curtain 204 and all the shielding curtains 205 are rolled up on the transmission shaft 203 and stored on the inner side of the baffle Ⅰ201, and then all the test workpieces on the top layer in the body 1 are taken out, thereby effectively improving the efficiency of taking out the test workpieces.

[0035] It should be noted that, by setting up two placement plates 12, the interior of the body 1 can be divided into three spaces, and the corresponding rolling curtain 204, the corresponding blocking curtain 205 and the corresponding baffle II 208 can be combined with the body 1 to form three independent enclosed spaces, so that when the test workpiece is tested, a control group can be formed, that is, the test workpiece of the same model can be placed in three different independent enclosed spaces, and the temperature and humidity in the three independent enclosed spaces are different, so that the changes of the test workpiece under different temperature and humidity conditions can be known, thereby making the function of the body 1 diverse, and the performance of the test workpiece under different temperature and humidity conditions can be more comprehensively known.

[0036] Embodiment 2 Based on the first embodiment, according to Figure 7-Figure 8 As shown, it also includes a pick-and-place system; the pick-and-place system is connected to the fixed plate 13; the pick-and-place system consists of a connecting rod 301, a button 3011, a convex strip 302, a hanging ring 303, an L-shaped rod 304 and an elastic member 305; three connecting rods 301 are slidably connected to the fixed plate 13; each connecting rod 301 is fixedly connected to a button 3011; each connecting rod 301 is fixedly connected to five convex strips 302; the button 3011 and all the convex strips 302 penetrate the baffle Ⅰ201 and protrude from the baffle The front side of Ⅰ201; each shielding curtain 205 is fixedly connected to a hanging ring 303 at the lower front side; each baffle Ⅰ201 is fixedly connected to two L-shaped rods 304 at the lower surface; all L-shaped rods 304 on the same baffle Ⅰ201 are slidably connected to a corresponding connecting rod 301; each L-shaped rod 304 is sleeved with an elastic member 305 on the outer side of the lower part, and the elastic member 305 is a spring, one end of the elastic member 305 is fixedly connected to the L-shaped rod 304, and the other end of the elastic member 305 is fixedly connected to the connecting rod 301.

[0037] The hanging ring 303 is made of rubber material, and is used to increase the friction between the hanging ring 303 and the convex strip 302 .

[0038] To further facilitate manual removal of the test workpiece, or addition, reduction, or replacement of the test workpiece, after determining the specific position of the test workpiece, the hanging ring 303 on the shielding curtain 205 corresponding to the position of the test workpiece is manually pinched, and the hanging ring 303 is pulled upward so that the hanging ring 303 is suspended on the corresponding convex strip 302. The movement of the hanging ring 303 drives the shielding curtain 205 to move, thereby causing the shielding curtain 205 to bend upward, and the shielding curtain 205 is lifted up, and then the test workpiece is manually taken, thereby improving the convenience of taking the test workpiece.

[0039] When it is necessary to take multiple test workpieces, a person may subconsciously take the next test workpiece directly and forget to put down the opened shielding curtain 205, or when taking multiple test workpieces, the corresponding multiple shielding curtains 205 will be opened, which may easily cause a large change in the temperature and humidity of the air in the machine body 1, increasing energy consumption. At the same time, after the test workpieces are taken, all the opened shielding curtains 205 need to be put down one by one, which is inconvenient. To solve the above problem, after the test workpieces are taken, the box door 11 needs to be closed. When the box door 11 is closed manually, the box door 11 is turned toward the fixed plate 13. The connecting rod 301 is moved and squeezed by the door 11, so that the connecting rod 301 moves backward with the front side of the baffle Ⅰ 201 as the reference, and the movement of the connecting rod 301 drives the corresponding convex strip 302 to move backward, and compresses the corresponding elastic member 305, so that the corresponding hanging ring 303 falls off from the convex strip 302, and the shielding curtain 205 falls down by the elasticity of the shielding curtain 205 itself and the gravity of the counterweight strip Ⅱ 2051, and then the counterweight strip Ⅱ 2051 is adsorbed by the magnetic strip 122, so that the shielding curtain 205 is reset, and combined with the rolling curtain 204 to shield the front part of the machine body 1; And when the test workpieces to be taken are not located on the same layer, taking the top layer and the middle layer in the machine body 1 as an example, after manually taking multiple test workpieces at the top layer (that is, the multiple shielding curtains 205 at the top layer have been opened), it is necessary to take multiple test workpieces at the middle layer. At this time, the box door 11 is in an open state. In order to reduce the large changes in the temperature and humidity of the air in the machine body 1, the button 3011 on the corresponding connecting rod 301 at the top layer is manually pressed, so that the connecting rod 301 moves backward, and then drives the corresponding convex strip 302 to move backward, and finally resets all the shielding curtains 205 opened at the top layer. At this time, continue to take the test workpieces in the middle layer, thereby reducing the opening frequency of the box door 11, and at the same time can effectively reduce the changes in the temperature and humidity of the air in the machine body 1, and at the same time can further improve the convenience of taking the test workpieces.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multifunctional constant temperature and humidity testing machine, comprising a body (1) and a placement plate (12); a plurality of placement plates (12) are arranged in the body (1), and the interior of the body (1) is divided into a plurality of spaces by the placement plates (12); the characteristics are: The machine also comprises a baffle plate I (201), a motor (202), a transmission shaft (203), a rolling curtain (204) and a blackout curtain (205); at least three baffle plates I (201) are fixedly connected inside the machine body (1); at least three motors (202) are fixedly connected to the machine body (1); the output shaft of each motor (202) is fixedly connected to a transmission shaft (203); all the transmission shafts (203) are rotatably connected to the machine body (1); a rolling curtain (204) is wound around each transmission shaft (203); at least five blackout curtains (205) are arranged on each rolling curtain (204), and the blackout curtains (205) are made of transparent rubber.

2. A multifunctional constant temperature and humidity testing machine according to claim 1, characterized in that: A timer alarm is installed on the machine body (1).

3. A multifunctional constant temperature and humidity testing machine according to claim 1, characterized in that: The rolling curtain (204) is made of high temperature resistant rubber material, and a counterweight bar I (2041) is fixedly connected to the lower part of the rolling curtain (204), and the counterweight bar I (2041) is made of iron material.

4. A multifunctional constant temperature and humidity testing machine according to claim 1, characterized in that: A sealing strip is provided between the rolling curtain (204) and the shielding curtain (205).

5. The multifunctional constant temperature and humidity testing machine according to claim 1, characterized in that: A counterweight bar II (2051) is fixedly connected to the lower part of the shielding curtain (205), and the counterweight bar I (2041) is made of iron.

6. A multifunctional constant temperature and humidity testing machine according to claim 1, characterized in that: A groove is provided at the front of the placement plate (12), and a magnetic strip (122) is installed in the groove.

7. A multifunctional constant temperature and humidity testing machine according to claim 1, characterized in that: The upper edge of the groove opened at the front of the placement plate (12) is arranged to be inclined.

8. A multifunctional constant temperature and humidity testing machine according to any one of claims 1 to 7, characterized in that: It also includes an electric actuator (206), a connecting rod (207) and a baffle II (208); each placement plate (12) is provided with a plurality of circular holes (121); at least three electric actuators (206) are fixedly connected to the inner side of the machine body (1); the telescopic portion of each electric actuator (206) is fixedly connected to a connecting rod (207); all the connecting rods (207) are slidably connected to the machine body (1); each connecting rod (207) is fixedly connected to a plurality of baffles II (208); the middle portion of the placement plate (12) is a hollow structure; all the baffles II (208) on the same connecting rod (207) are slidably connected to a corresponding placement plate (12).

9. A multifunctional constant temperature and humidity testing machine according to claim 8, characterized in that: The invention also includes a pick-and-place system; the pick-and-place system is connected to the fixed plate (13); the pick-and-place system is composed of a connecting rod (301), a button (3011), a convex strip (302), a hanging ring (303), an L-shaped rod (304) and an elastic member (305); at least three connecting rods (301) are slidably connected to the fixed plate (13); each connecting rod (301) is fixedly connected to a button (3011); each connecting rod (301) is fixedly connected to at least five convex strips (302); the button (3011) and all the convex strips (302) penetrate the baffle plate I (201) and protrude out of the baffle plate I (201). baffle I (201); a hanging ring (303) is fixedly connected to the lower front part of each shielding curtain (205); at least two L-shaped rods (304) are fixedly connected to the lower surface of each baffle I (201); all L-shaped rods (304) on the same baffle I (201) are slidably connected to a corresponding connecting rod (301); an elastic member (305) is sleeved on the outer side of the lower part of each L-shaped rod (304), the elastic member (305) is a spring, one end of the elastic member (305) is fixedly connected to the L-shaped rod (304), and the other end of the elastic member (305) is fixedly connected to the connecting rod (301).

10. A multifunctional constant temperature and humidity testing machine according to claim 9, characterized in that: The hanging ring (303) is made of rubber.

Images