PTC high-temperature calibration device

Abstract

The utility model relates to a PTC (Positive Temperature Coefficient) high-temperature calibration device, which aims to solve the technical problem of low natural cooling efficiency of residual high temperature of a workpiece during current workpiece taking, and comprises a base, a box body fixed at the top of the base, electric heating plates fixed on two side walls of an inner cavity of the box body, a box door hinged at an opening of the box body, and a hollow shaft penetrating through the top of the box body, the servo motor drives the second gear to rotate, so that the first gear rotates, the hollow shaft and the bearing disc are driven to rotate, a workpiece rotates in the bearing disc during high-temperature calibration, the heating uniformity is improved, and the calibration accuracy is further improved. And meanwhile, air blown by the fan is guided into the hollow shaft when the workpiece is taken, then the air is guided out through the hole in the tail end of the hollow shaft, and therefore the air can be accurately blown to the workpiece on the bearing disc, the cooling efficiency is improved, rapid cooling is achieved, and the situation that the hand is scalded when the workpiece is taken is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature calibration technical field, concretely is a kind of PTC high temperature calibration device. BACKGROUND

[0002] PCT peak temperature is an important test parameter, used to test the tolerance and stability of electronic devices and products under extreme conditions, PCT test is a kind of environment condition simulating high humidity and high temperature, electronic devices or products are placed in the environment with humidity up to 95% and temperature up to 121 ℃ for testing, the purpose of testing is to determine whether electronic devices or products can work normally or store for a long time without damage in such harsh environment, PCT peak temperature refers to the highest temperature point encountered by electronic devices or products during testing, and is one of important indicators for evaluating its stability and tolerance.

[0003] The existing PCT test in actual high temperature calibration process, parts are placed in test box, then heater is used to make workpiece under high temperature condition for detection, but after determination, its surface has higher temperature when taking out, so that it is not convenient to take out operation, and workpiece is placed in box body, and staff needs to go deep into interior for taking, there is visual blind area, further affect the convenience of operation. Therefore, new technical scheme needs to be designed to solve. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the deficiency of prior art, adapting to reality needs, provide a kind of PTC high temperature calibration device, to solve the technical problem of low natural cooling efficiency of workpiece when taking out.

[0005] In order to realize the purpose of the utility model, the technical scheme adopted by the utility model is as follows: a kind of PTC high temperature calibration device is designed, comprising:

[0006] The bottom of the base is fixed with a box body, the inner cavity of the box body is fixed with an electric heating plate on both sides, and the opening of the box body is hinged with a box door;

[0007] The top of the box body penetrates a hollow shaft, the tail end of the hollow shaft is connected with a bearing disc, a plurality of uniformly distributed holes are formed in the tail end of the hollow shaft, a first gear is fixed on the outer wall of the hollow shaft, the outer wall of the first gear is engaged with a second gear, the second gear is fixed on the outer end of the servo motor transmission shaft, the servo motor is fixed on the top of the box body, a fan is fixed on one side wall of the box body, the outer end of the fan is fixed and communicated with a conduit, the outer end of the conduit is connected with a solenoid valve, and the outer end of the solenoid valve is communicated with the hollow shaft through a rotary joint.

[0008] First open the box door, then the workpiece is placed into the inner cavity of the bearing disc, then the box door is closed, and heating is carried out by using the electric heating plate, so that the box is in a high temperature condition, then the servo motor is started to drive the second gear to rotate, so that the first gear is driven to rotate, so that the hollow shaft and the bearing disc are driven to rotate, so that the workpiece rotates in the bearing disc during high-temperature calibration, so that the uniformity of heating is improved, and the accuracy of calibration is improved, and when the workpiece is taken out, the fan blows air into the hollow shaft, and then the gas is discharged through the hole at the tail end of the hollow shaft, so that the workpiece on the bearing disc can be accurately blown, so that the cooling efficiency is improved, and rapid cooling is realized, so that the situation of scalding the hands when taking out is avoided.

[0009] Preferably, the inner cavity of the bearing disc is provided with a limiting sliding groove at the bottom, the limiting sliding groove is inserted with a matched limiting sliding block, the two side walls of the limiting sliding block are fixed with springs, the outer end of the spring is fixedly connected with the inner wall of the limiting sliding groove, and the top of the limiting sliding block is fixedly connected with the tail end of the hollow shaft.

[0010] Preferably, the inner cavity of the box body is fixedly provided with a temperature sensor at the bottom, the temperature sensor is connected with the industrial computer, so that the temperature in the box body can be detected, and the industrial computer can control the electric heating plate by using the temperature controller, so that the temperature of high-temperature calibration is accurate, and the accuracy of high-temperature calibration is improved.

[0011] Preferably, the surface of the box door is embedded with a transparent glass observation window, so that the internal condition of the box body can be observed conveniently.

[0012] Preferably, the outer wall of the box door is fixedly provided with a handle on one side, and the handle is provided with a matched rubber sleeve, so that the handle can be held to open and close the box body.

[0013] Preferably, the top of the base is provided with mounting holes at four corners, so that the device can be fixed on the mounting frame by penetrating the mounting holes with bolts when the device is used, so that the overall use stability of the device is high.

[0014] Compared with the prior art, the beneficial effects of the utility model lie in:

[0015] 1.The utility model discloses a second gear is rotated through servo motor drive, thereby make first gear rotation, thereby drive hollow shaft and bearing disc rotation, thereby make workpiece rotate in bearing disc when high temperature calibration, thereby make the evenness of heating improve, and further improve the accuracy of calibration, and the fan blows and is introduced into the hollow shaft when taking the piece, then utilize the hole of hollow shaft tail end and export gas, thereby can accurately blow to the workpiece on bearing disc, thereby improve the efficiency of cooling, and further realize quick cooling, avoid the situation of scalding of hand when taking place.

[0016] 2.The utility model discloses a bearing disc is pulled and makes the limit sliding block of hollow shaft tail end can compress spring and make bearing disc and limit sliding block slide relatively, thereby make bearing plate can pull to the outside of box body, thereby make convenient to take the workpiece, improve the convenience of operation. ACCURATELY BLOW TO THE WORKPIECE ON BEARING DISC

[0017] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0018] Fig. 2 It is the inside structure schematic diagram of the box body of the utility model;

[0019] Fig. 3 It is bearing disc part structure schematic diagram of the utility model;

[0020] In the drawing: 1, base;

[0021] 2, box body;21, box door;22, guide pipe;23, electric heating plate;24, temperature sensor;25, fan;

[0022] 3, hollow shaft;31, first gear;32, second gear;33, servo motor;34, bearing disc;35, hole;36, limit sliding slot;37, limit sliding block;38, spring. Specific implementation

[0023] The utility model is further explained in connection with the drawings and examples:

[0024] Example 1: a kind of PTC high temperature calibration device, refer to Figs. 1-3 , comprising:

[0025] Base 1, the top of base 1 is fixed with box body 2, the inner chamber both side walls of box body 2 are all fixed with electric heating plate 23, and box door 21 is hinged at the opening of box body 2;

[0026] The top of the box 2 is penetrated by a hollow shaft 3, the tail end of the hollow shaft 3 is connected with a bearing disc 34, a plurality of uniformly distributed holes 35 are arranged on the tail end of the hollow shaft 3, a first gear 31 is fixedly sleeved on the outer wall of the hollow shaft 3, the outer wall of the first gear 31 is engaged with a second gear 32, the second gear 32 is fixed to the outer end of the transmission shaft of a servo motor 33, the servo motor 33 is fixed to the top of the box 2, a fan 25 is fixed to one side wall of the box 2, the outer end of the fan 25 is fixedly connected with a conduit 22, the outer end of the conduit 22 is connected with a solenoid valve, and the outer end of the solenoid valve is communicated with the hollow shaft 3 through a rotary joint;

[0027] In actual use, first, the box door 21 is opened, then the workpiece is placed in the inner cavity of the bearing disc 34, then the box door 21 is closed, and the electric heating plate 23 is used for heating, so that the box 2 is in a high temperature condition, then the servo motor 33 is started to drive the second gear 32 to rotate, thereby driving the first gear 31 to rotate, thereby driving the hollow shaft 3 and the bearing disc 34 to rotate, so that the workpiece rotates in the bearing disc 34 during high-temperature calibration, thereby improving the uniformity of heating, and further improving the accuracy of calibration, and when the workpiece is taken out, the fan 25 blows air into the hollow shaft 3, and then the gas is discharged through the holes 35 at the tail end of the hollow shaft 3, so that the workpiece on the bearing disc 34 can be accurately blown, thereby improving the cooling efficiency, and further realizing rapid cooling, thereby avoiding the situation that the hand is scalded when taking out the workpiece.

[0028] Further, the top of the base 1 is provided with mounting holes at four corners, the mounting holes are arranged, so that the device can be fixed on the mounting frame through the mounting holes during use, thereby improving the stability of the device as a whole.

[0029] Further, the surface of the box door 21 is embedded with a transparent glass observation window, the glass observation window is arranged, so that the internal condition of the box 2 can be observed conveniently.

[0030] It is worth mentioning that the handle is fixedly installed on one side of the outer wall of the box door 21, and a matched rubber sleeve is sleeved on the outer wall of the handle, the handle is arranged, so that the box can be conveniently opened and closed by holding the handle.

[0031] As Fig. 1 and 2 , the inner cavity of the box 2 is fixedly provided with a temperature sensor 24, the temperature sensor 24 is connected with an industrial computer, so that the temperature in the box 2 can be detected, and the industrial computer can control the electric heating plate 23 by using a temperature controller, so that the temperature of the high-temperature calibration is accurate, thereby improving the accuracy of the high-temperature calibration.

[0032] As Fig. 1 and 3As shown, the inner cavity bottom of the bearing disc 34 is provided with a limiting sliding groove 36, the inner cavity of the limiting sliding groove 36 is inserted with a matched limiting sliding block 37, the two side walls of the limiting sliding block 37 are both fixedly provided with springs 38, the outer end of the spring 38 is fixedly connected with the inner wall of the limiting sliding groove 36, and the top of the limiting sliding block 37 is fixedly connected with the tail end of the hollow shaft 3;

[0033] By pulling the bearing disc 34, the limiting sliding block 37 at the tail end of the hollow shaft 3 can compress the spring 38, so that the bearing disc 34 and the limiting sliding block 37 slide relatively, so that the bearing disc 34 can be pulled to the outside of the box body 2, so that the workpiece is convenient to take and put, and the convenience of operation is improved.

[0034] The principle of the embodiment is that: in actual use, first, the box door 21 is opened, then the workpiece is placed in the inner cavity of the bearing disc 34, then the box door 21 is closed, heating is carried out by using the electric heating plate 23, so that the box body 2 is in a high temperature condition, then the servo motor 33 is started to drive the second gear 32 to rotate, so as to drive the first gear 31 to rotate, so as to drive the hollow shaft 3 and the bearing disc 34 to rotate, so that the workpiece rotates in the bearing disc 34 during high-temperature calibration, so that the uniformity of heating is improved, and the accuracy of calibration is improved, and when the workpiece is taken, the fan 25 blows air into the hollow shaft 3, and then the gas is discharged through the hole 35 at the tail end of the hollow shaft 3, so that the workpiece on the bearing disc 34 can be accurately blown, so that the cooling efficiency is improved, and fast cooling is realized, so that the situation of scalding the hands when taking the workpiece is avoided, when the workpiece is taken, by pulling the bearing disc 34, the limiting sliding block 37 at the tail end of the hollow shaft 3 can compress the spring 38, so that the bearing disc 34 and the limiting sliding block 37 slide relatively, so that the bearing disc 34 can be pulled to the outside of the box body 2, so that the workpiece is convenient to take and put, and the convenience of operation is improved.

[0035] In addition, the components designed in the utility model are all general standard components or components known by those skilled in the art, the structure and principle of which can be known by the technical personnel through a technical manual or through a conventional experimental method, and the technical personnel in the art can realize it without further description, and the content protected by the utility model does not involve improvement of the internal structure and method.

[0036] The embodiment of the utility model discloses a preferable embodiment, but is not limited to this, and those skilled in the art can easily understand the spirit of the utility model according to the above-mentioned embodiment, and make different inferences and changes, as long as it does not deviate from the spirit of the utility model, it is within the protection scope of the utility model.

Claims

1. A PTC high temperature calibration device, characterized by, Include: The base (1), the top of the base (1) is fixed with box (2), the inner cavity of the box (2) both sides wall is fixed with electric heating plate (23), the opening of the box (2) is hinged with box door (21); The top of the box (2) is penetrated by a hollow shaft (3), the tail end of the hollow shaft (3) is connected with a bearing disc (34), a plurality of uniformly distributed holes (35) are opened in the tail end of the hollow shaft (3), the outer wall of the hollow shaft (3) is fixed with a first gear (31) on the upper side, the outer wall of the first gear (31) is engaged with a second gear (32), the second gear (32) is fixed on the outer end of the transmission shaft of the servo motor (33), the servo motor (33) is fixed on the top of the box (2), one side wall of the box (2) is fixed with a fan (25), the outer end of the fan (25) is fixedly connected with a conduit (22), the outer end of the conduit (22) is connected with a solenoid valve, the outer end of the solenoid valve is communicated with the hollow shaft (3) through a rotary joint.

2. A PTC high temperature calibration device as claimed in claim 1, characterized in that The inner cavity of the bearing disc (34) is provided with a limiting sliding groove (36) at the bottom, the limiting sliding groove (36) is inserted with a matched limiting sliding block (37), the two side walls of the limiting sliding block (37) are fixed with springs (38), the outer end of the spring (38) and the inner wall of the limiting sliding groove (36) are fixedly connected, and the top of the limiting sliding block (37) and the tail end of the hollow shaft (3) are fixedly connected.

3. A PTC high temperature calibration device as claimed in claim 1, characterized in that The inner cavity of the box (2) is fixedly installed with a temperature sensor (24).

4. A PTC high temperature calibration device as claimed in claim 3, characterized in that The surface of the box door (21) is embedded with a transparent glass observation window.

5. The PTC high temperature calibration device of claim 1, wherein, The outer wall of the box door (21) is fixedly installed with a handle, and the outer wall of the handle is sleeved with a matched rubber sleeve.

6. A PTC high temperature calibration device as claimed in claim 1, characterized in that The top of the base (1) is provided with mounting holes at the four corners.

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