Motor and reflow soldering machine

Abstract

The utility model relates to a motor and a reflow soldering machine, and the motor comprises a motor body which is provided with an output shaft; the heat insulation sealing mechanism comprises a heat insulation plate, a first mounting plate attached to the heat insulation plate and a second mounting plate spaced from the first mounting plate, the output shaft sequentially penetrates through the heat insulation plate, the first mounting plate and the second mounting plate, and an air heat insulation layer is formed between the first mounting plate and the second mounting plate. The air heat insulation layer and the heat insulation plate act together, so that heat in the reflow soldering machine can be effectively prevented from being conducted to the position of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing mechanisms, in particular to a motor and a reflow soldering machine. Background Art

[0002] The function of the motor in the reflow soldering machine is to transfer the heat generated in the reflow soldering machine to the circuit board through the rotation speed of the motor, so that the tin on the circuit board can achieve the purpose of reflow soldering through the change of heat.

[0003] Combination Figure 1 and Figure 2 The existing motor includes a motor body 100 and an impeller 800 connected to the output end of the motor body 100, wherein the output shaft of the motor body 100 passes through the heat insulation plate 200 and the first mounting plate 300 in sequence, and the surface of the first mounting plate 300 is in contact with the surface of the heat insulation plate 200. It can be understood that the heat insulation plate 200 and the first mounting plate 300 are both provided with through holes, and a fourth shaft seal 604 is provided at the through hole of the heat insulation plate 200, and the fourth shaft seal 604 and the heat insulation plate are interference fit.

[0004] From the above, it can be seen that the existing motor is only sealed by a single layer formed by the heat insulation plate 200 and the first mounting plate 300. The seals, namely the heat insulation plate 200, the first mounting plate 300 and the fourth shaft seal 604, are close to the cavity of the reflow soldering machine. The seals used will age and wear due to the high temperature working environment and long-term working time. When the seals are aged and worn, the probability of nitrogen leakage in the reflow soldering machine will greatly increase. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model discloses a motor and a reflow soldering machine.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A motor, comprising:

[0008] A motor body having an output shaft;

[0009] The heat-insulating sealing mechanism includes a heat-insulating plate, a first mounting plate arranged in contact with the heat-insulating plate, and a second mounting plate arranged at a distance between the first mounting plate, wherein the output shaft passes through the heat-insulating plate, the first mounting plate and the second mounting plate in sequence, wherein an air heat-insulating layer is formed between the first mounting plate and the second mounting plate.

[0010] In one embodiment of the present invention, the first mounting plate and the second mounting plate are connected by at least one fastening element.

[0011] In one embodiment of the present invention, a gasket is provided on a side of the second mounting plate away from the first mounting plate.

[0012] In one embodiment of the utility model, the first mounting plate and the second mounting plate both have through holes, a first shaft seal is provided between the output shaft and the through hole of the first mounting plate, and the first shaft seal and the through hole of the first mounting plate are interference fit.

[0013] In one embodiment of the present invention, a second shaft seal is provided between the output shaft and the through hole of the second mounting plate, and the second shaft seal and the through hole of the second mounting plate are interference fit.

[0014] In one embodiment of the present invention, the second mounting plate is provided with a nitrogen filling port.

[0015] In one embodiment of the present invention, a thermocouple is further included, and a measuring end of the thermocouple passes through the second mounting plate.

[0016] In one embodiment of the present invention, an impeller connected to the end of the output shaft is also included.

[0017] In one embodiment of the present invention, the impeller and the output shaft are coaxially arranged.

[0018] The utility model also provides a reflow soldering machine, comprising the motor as described above.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The motor described in the utility model has an air insulation layer, which works together with the insulation board to prevent the heat in the furnace from being transferred to the motor position, thus playing a role of heat insulation;

[0021] The motor described in the utility model uses a gasket, a first shaft seal and a second shaft seal to further improve the sealing performance of the motor;

[0022] The motor described in the utility model is designed with a nitrogen filling port on the second mounting plate. The nitrogen filled into the reflow soldering machine is directly located at the air outlet position of the impeller, and the nitrogen can be delivered to various places inside the reflow soldering machine in the first time, which is beneficial to the stability of the nitrogen atmosphere inside the reflow soldering machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the structure of an existing motor.

[0025] Figure 2 This is a cross-sectional view of a conventional motor.

[0026] Figure 3 It is a structural schematic diagram of the motor in the utility model.

[0027] Figure 4 It is a cross-sectional view of the motor in the utility model.

[0028] Figure 5 It is a cross-sectional view of the motor (excluding the impeller) in the utility model.

[0029] Explanation of the reference numerals in the specification: 100, motor body; 200, heat insulation plate; 300, first mounting plate; 400, second mounting plate; 500, gasket; 601, first shaft seal; 602, second shaft seal; 603, fastening element; 604, third shaft seal; 700, thermocouple; 800, impeller; 900, air insulation layer. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0031] The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only the directions of the reference drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0032] Embodiment 1

[0033] Combination Figures 3 to 5 , a motor comprising:

[0034] The motor body 100 has an output shaft;

[0035] The heat-insulating sealing mechanism includes a heat-insulating plate 200, a first mounting plate 300 arranged in contact with the heat-insulating plate 200, and a second mounting plate 400 arranged to form a spacing between the first mounting plate 300. The output shaft passes through the heat-insulating plate 200, the first mounting plate 300 and the second mounting plate 400 in sequence, wherein an air heat-insulating layer 900 is formed between the first mounting plate 300 and the second mounting plate 400.

[0036] The present embodiment provides a motor with an additional air insulation layer 900, which works together with the insulation board 200 to effectively prevent the heat inside the reflow soldering machine from being transferred to the motor position, thereby extending the service life of the motor seal and reducing or avoiding the probability of nitrogen leakage in the reflow soldering machine.

[0037] In this embodiment, the motor further includes an impeller 800 connected to the end of the output shaft. Specifically, the impeller 800 and the output shaft are coaxially arranged so that the motor operates stably and reliably. When the motor is started, the motor drives the impeller 800 to rotate at a high speed, sucking air into the inlet and flowing outward to form a wind flow. Due to the high rotation speed of the impeller 800, the blades of the impeller are subjected to the centrifugal force, so that the air can be efficiently transported.

[0038] In this embodiment, the first mounting plate 300 and the second mounting plate 400 are connected by at least one fastening element 603. Specifically, Figure 3 As shown, the first mounting plate 300 and the second mounting plate 400 are both rectangular in shape and of the same size, and four fastening elements 603 are used to sequentially penetrate the four corners of the first mounting plate 300 and the second mounting plate 400, wherein the fastening elements 603 can be bolts, and the distance between the first mounting plate 300 and the second mounting plate 400 can be adjusted by adjusting the length of the bolts. It can be understood that the first mounting plate 300 and the second mounting plate 400 are pre-opened with through holes for the fastening elements 603 to penetrate.

[0039] In this embodiment, a gasket 500 is provided on one side of the second mounting plate 400 away from the first mounting plate 300. Further, the material of the gasket 500 is graphite. In this embodiment, both the first mounting plate 300 and the second mounting plate 400 are provided with through holes, and a first shaft seal 601 is provided between the output shaft and the through hole of the first mounting plate 300, and the first shaft seal 601 and the through hole of the first mounting plate 300 are interference fit.

[0040] A second shaft seal 602 is provided between the output shaft and the through hole of the second mounting plate 400 , and the second shaft seal 602 and the through hole of the second mounting plate 400 are in interference fit.

[0041] As can be seen from the above, the motor provided in this embodiment uses a gasket 500 made of graphite and a first shaft seal 601 and a second shaft seal 602 to form a match, thereby further improving the sealing performance of the motor.

[0042] In this embodiment, the second mounting plate 400 is provided with a nitrogen filling port (not shown in the figure), and the nitrogen filled into the furnace is directly located at the air outlet position of the impeller 800, which can deliver the nitrogen to every corner inside the cavity of the reflow soldering machine in the first time, which is beneficial to the stability of the nitrogen atmosphere inside the cavity of the reflow soldering machine.

[0043] In some possible embodiments, the motor further includes a thermocouple 700 , a measuring end of the thermocouple 700 passes through the second mounting board 400 , and the thermocouple 700 is used to monitor the temperature inside the reflow soldering machine.

[0044] In summary:

[0045] The motor provided in this embodiment has an additional air insulation layer 900, which works together with the insulation board 200 to effectively prevent the heat inside the reflow soldering machine from being transferred to the position of the motor, thereby preventing the high temperature inside the reflow soldering machine from damaging the internal components of the motor, extending the service life of the internal components, and reducing or avoiding the probability of nitrogen leakage in the reflow soldering machine.

[0046] In addition, the motor provided in this embodiment uses a gasket 500, a first shaft seal 601 and a second shaft seal 602 to further improve the sealing performance of the entire mechanism.

[0047] Embodiment 2

[0048] This embodiment provides a reflow soldering machine, including the motor provided in the first embodiment.

[0049] The working principle of this embodiment is as follows:

[0050] The structure of each heating zone in the reflow soldering machine is the same. In the upper and lower heating zones, there is a motor driving the impeller 800 to rotate at high speed to generate air or nitrogen blowing force. After the gas is heated by the heating wire or other materials, it is blown out from the porous plate and hits the PCB board, thus realizing reflow soldering.

[0051] Specifically, the motor is started, and the motor drives the impeller 800 to rotate, so that the heat generated in the reflow soldering machine is transferred to the circuit board through the rotation speed of the motor, so that the tin on the circuit board is reflow soldered through the change of heat.

[0052] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0053] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A motor, characterized in that: include: A motor body (100) having an output shaft; The heat insulation sealing mechanism comprises a heat insulation plate (200), a first mounting plate (300) arranged in contact with the heat insulation plate (200), and a second mounting plate (400) arranged with a spacing between the first mounting plate (300), wherein the output shaft passes through the heat insulation plate (200), the first mounting plate (300) and the second mounting plate (400) in sequence, wherein an air heat insulation layer (900) is formed between the first mounting plate (300) and the second mounting plate (400).

2. The motor according to claim 1, characterized in that The first mounting plate (300) and the second mounting plate (400) are connected via at least one fastening element (603).

3. The motor according to claim 1, characterized in that A gasket (500) is provided on a side of the second mounting plate (400) away from the first mounting plate (300).

4. The motor according to claim 1, characterized in that The first mounting plate (300) and the second mounting plate (400) are both provided with through holes, a first shaft seal (601) is provided between the output shaft and the through hole of the first mounting plate (300), and the first shaft seal (601) and the through hole of the first mounting plate (300) are interference fit.

5. The motor according to claim 4, characterized in that A second shaft seal (602) is provided between the output shaft and the through hole of the second mounting plate (400), and the second shaft seal (602) and the through hole of the second mounting plate (400) are interference fit.

6. The motor according to claim 1, characterized in that The second mounting plate (400) is provided with a nitrogen filling port.

7. The motor according to claim 1, characterized in that It also includes a thermocouple (700), wherein a measuring end of the thermocouple (700) passes through the second mounting plate (400).

8. The motor according to claim 1, characterized in that Also included is an impeller (800) connected to the end of the output shaft.

9. The motor according to claim 8, characterized in that The impeller (800) and the output shaft are coaxially arranged.

10. A reflow soldering machine, characterized in that: Comprising a motor as claimed in any one of claims 1 to 9.

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