Auxiliary device for reflow soldering chain and reflow soldering equipment

Abstract

The utility model discloses a reflow soldering chain auxiliary device and reflow soldering equipment, the reflow soldering chain auxiliary device comprises a chain bracket, a rotating wheel and a rotating wheel installation shaft, the chain bracket is provided with a bracket groove for a chain to pass through, the rotating wheel installation shaft is fixed on the chain bracket, and the rotating wheel is installed on the rotating wheel installation shaft in a rotating mode. The rotating wheel is aligned with the opening of the bracket, and the top surface of the rotating wheel is flush with the bottom of the bracket. The rotating wheel is arranged on the chain bracket, the chain is in rolling contact with the rotating wheel in the moving process, friction force is small, and resistance to rotation of the motor cannot be additionally increased. Meanwhile, as the rotating wheel has a supporting effect on the chain, the pressure of the chain on the chain bracket is reduced, the hard friction between the chain and the chain bracket is further reduced, the resistance borne by the motor during rotation is also correspondingly reduced, the problem that the surface of the chain bracket is ground to form a groove after the equipment is used for a long time can be avoided, and the service life of the motor is favorably prolonged; the equipment maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the reflow soldering equipment field especially relates to a reflow soldering chain auxiliary device and reflow soldering equipment. BACKGROUND

[0002] The core link of reflow soldering is to use external heat source to heat, so that the solder melts and flows again to immerse and complete the welding process of electronic devices. In this process, the chain of the conveying system of the equipment drives the circuit board with electronic devices to pass through each temperature area set in the equipment, and the solder is dried, preheated, melted, wetted and cooled to weld the components to the circuit board.

[0003] In the reflow soldering equipment, the circuit board is driven by the chain transmission mechanism, and the chain is driven from a high position to a low position, so it is necessary to provide support near the gear meshing position at the high position to ensure the close meshing of the chain and the gear. Usually, a stainless steel chain bracket is arranged near the gear to support the chain. The chain rubs hard on the end of the stainless steel chain bracket, and after a long time, the stainless steel chain bracket is rubbed to form grooves, thereby increasing the resistance when the motor rotates and damaging the gearbox of the reflow soldering motor. It can be seen that the wear and tear of the chain bracket affects the normal operation of the equipment and increases the repair cost.

[0004] In addition, the uneven surface of the chain bracket can also affect the stability of the circuit board during the conveying process, thereby affecting the welding quality. These problems cannot be ignored for the electronic manufacturing industry which pursues high precision and high efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a reflow soldering chain auxiliary device and reflow soldering equipment which can reduce the hard friction of the chain on the chain bracket, thereby reducing the resistance when the motor rotates and preventing the damage of the gearbox of the reflow soldering motor.

[0006] The utility model is realized in the following way. A reflow soldering chain auxiliary device is used in the transmission system of a reflow soldering equipment, which comprises a chain bracket, a rotating wheel and a rotating wheel mounting shaft. The chain bracket is provided with a supporting groove for the chain to pass through. The rotating wheel mounting shaft is fixed on the chain bracket. The rotating wheel is rotatably mounted on the rotating wheel mounting shaft. The rotating wheel is aligned with the slot opening of the supporting groove, and the top surface of the rotating wheel is flush with the groove bottom of the supporting groove.

[0007] Further, the length direction of the supporting groove is the transmission direction of the chain, and the two slot openings of the supporting groove are located at the two ends of the length direction.

[0008] Further, the two side walls of the supporting groove extend in the direction of the rotating wheel to form a guide wall for guiding the chain.

[0009] Further, the guide walls on both sides of the bracket are inclined to extend in the outward direction, forming a deviation prevention wall for preventing the chain from deviating.

[0010] Further, the bottom wall of the bracket is a plane and is parallel to the tangent direction of the top surface of the runner.

[0011] Further, the width of the bracket matches the width of the chain.

[0012] Further, the reflow soldering chain auxiliary device further comprises a mounting seat, the mounting seat is detachably mounted below the chain bracket, the bracket is located on the same outer side of the mounting seat, and the runner mounting shaft is fixed on the mounting seat and located on the same outer side of the bracket.

[0013] Further, the chain bracket further has a mounting portion, the mounting portion is provided with a mounting hole, and the mounting seat is mounted below the mounting portion through screws.

[0014] Further, the chain bracket is made of wear-resistant material.

[0015] In order to achieve the above-mentioned purpose, the utility model further provides a reflow soldering equipment, including transmission chain and above-mentioned any one reflow soldering chain auxiliary device, the chain bracket of reflow soldering chain auxiliary device is used for supporting transmission chain.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The reflow soldering chain auxiliary device provided by the utility model comprises a chain bracket, a runner and a runner mounting shaft, the chain bracket is provided with a bracket for the chain to pass through, the runner mounting shaft is fixed on the chain bracket, the runner is rotatably mounted on the runner mounting shaft, the runner is aligned with the slot of the bracket, and the top surface of the runner is flush with the slot bottom of the bracket. By arranging the runner on the chain bracket, the chain is in rolling contact with the runner during movement, the friction is small, and the resistance to the rotation of the motor is not additionally increased. At the same time, since the runner has a supporting effect on the chain, the pressure of the chain on the chain bracket is reduced, thereby reducing the hard friction between the chain and the chain bracket, the resistance to the rotation of the motor is also reduced, the problem that the surface of the chain bracket is ground into a groove after long-term use of the equipment can be avoided, the service life of the motor is prolonged, and the equipment maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of a reflow soldering chain auxiliary device provided by the utility model embodiment;

[0019] Figure 2 is Figure 1An exploded structural schematic view of the reflow soldering chain auxiliary device.

[0020] In the drawings:

[0021] 1, chain bracket; 10, mounting portion; 101, mounting hole; 11, holding groove; 12, guide wall; 13, straightening wall; 2, rotating wheel; 3, rotating wheel mounting shaft; 4, mounting seat. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and should not be used to limit the present application.

[0023] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application; the terms "first", "second", "third" are only for the purpose of description, and should not be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] Please refer to Figure 1 and Figure 2 , a reflow soldering chain auxiliary device provided by the embodiment is shown, which comprises a chain bracket 1, a rotating wheel 2 and a rotating wheel mounting shaft 3, the chain bracket 1 is provided with a holding groove 11 for the chain to pass through, the rotating wheel mounting shaft 3 is fixed on the chain bracket 1, and the rotating wheel 2 is rotatably mounted on the rotating wheel mounting shaft 3.

[0025] The rotating wheel 2 is aligned with the notch of the holding groove 11, and the top surface of the rotating wheel 2 is flush with the groove bottom of the holding groove 11.

[0026] By setting the rotating wheel 2 on the chain bracket 1, the chain is in rolling contact with the rotating wheel 2 during movement, with small friction and no additional resistance to the rotation of the motor. At the same time, since the rotating wheel 2 supports the chain, it reduces the pressure of the chain on the chain bracket 1, thereby reducing the hard friction between the chain and the chain bracket 1, and the resistance to the rotation of the motor is also reduced accordingly. It can avoid the problem that the surface of the chain bracket 1 is worn out after long-term use of the equipment, and it is beneficial to prolong the service life of the motor and reduce the maintenance cost of the equipment.

[0027] In this embodiment, the length direction of the bracket 11 is the transmission direction of the chain, and the two notches of the bracket 11 are located at both ends of the length direction. The bottom wall of the bracket 11 is a plane and is parallel to the tangent direction of the top surface of the rotating wheel 2, so that the pressure and friction of the chain on the bracket 11 and the rotating wheel 2 are uniform, avoiding damage due to excessive friction at individual positions.

[0028] The width of the bracket 11 matches the width of the chain. In actual application, the width of the bracket 11 is slightly larger than the width of the chain, so that when the chain passes through the bracket 11, it is possible to avoid contact with the two side walls of the bracket 11, and at the same time, when the transmission direction of the chain deviates, the two side walls of the bracket 11 can limit the chain to correct the transmission direction of the chain.

[0029] Further, the two side walls of the bracket 11 extend in the direction of the rotating wheel 2 to form guide walls 12 for guiding the chain. Through this design, it can ensure that the chain maintains the correct running direction in the bracket 11, effectively reducing or avoiding friction between the chain and the side wall of the bracket 11, which is beneficial to prolong the service life of the equipment and reduce the maintenance cost.

[0030] Further, the guide walls 12 on both sides of the bracket 11 extend outwardly and obliquely to form an eight-shaped correction wall 13 for preventing the chain from deviating. Through this design, the chain can maintain the correct path during transmission, avoiding wear and damage caused by chain deviation, prolonging the service life of the equipment and reducing the maintenance cost. It should be noted that the correction wall 13 can be designed with different angles and lengths to adapt to different types and specifications of chains. Specifically, the inclination angle of the correction wall 13 can be adjusted according to the width and transmission speed of the chain to ensure the best correction effect. For example, the correction wall 13 can adopt a larger inclination angle to cope with high-speed transmission chains, or a smaller inclination angle to adapt to low-speed transmission chains.

[0031] The chain bracket 1 is made of wear-resistant material to further improve its service life and reliability. As a preferred embodiment, the chain bracket 1 is integrally made of a whole piece of stainless steel plate, and the mounting portion 10 and the holding groove 11 are formed by bending; wherein the mounting portion 10 is provided with a mounting hole 101. The reflow soldering chain auxiliary device of the embodiment further comprises a mounting seat 4, which is mounted below the mounting portion 10 of the chain bracket 1 in a detachable manner (such as threaded connection, buckle connection, etc.), wherein the holding groove 11 is located on the outer side of the mounting seat 4, and the rotating wheel mounting shaft 3 is fixed on the mounting seat 4 and located on the same outer side of the mounting seat 4 as the holding groove 11. Since the mounting seat 4 is connected to the chain bracket 1 in a detachable manner, when the rotating wheel 2 is damaged or worn, it can be conveniently replaced.

[0032] The connecting mode between the rotating wheel mounting shaft 3 and the mounting seat 4 can be threaded connection, key connection or interference fit, so as to ensure the stability and reliability of the rotating wheel mounting shaft 3. In order to further improve the stability and reliability of the device, a buffer material such as a rubber gasket can be added between the mounting seat 4 and the chain bracket 1 to absorb vibration and impact.

[0033] The embodiment also provides a reflow soldering device, which comprises a chain transmission system and the reflow soldering chain auxiliary device described above, and the reflow soldering chain auxiliary device is installed below the chain of the chain transmission system.

[0034] In summary, the reflow soldering chain auxiliary device of the embodiment is applied to the reflow soldering device, effectively solving the wear problem caused by hard friction of the chain on the chain bracket 1, reducing the resistance when the motor rotates, reducing the damage to the gearbox, and prolonging the service life of the device. Compared with the prior art, the technical scheme of the embodiment has significant advantages in improving the reliability of the device and reducing the maintenance cost.

[0035] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reflow solder chain assist device for use in a drive system of a reflow soldering apparatus, characterized by, The chain bracket has a groove for the chain to pass through, the rotating wheel is installed on the rotating wheel mounting shaft, the top surface of the rotating wheel is aligned with the groove bottom of the groove, and the top surface of the rotating wheel is flush with the groove bottom of the groove.

2. The reflow solder chain assist device of claim 1, wherein, The length direction of the groove is the transmission direction of the chain, and the two groove openings are located at the two ends of the length direction of the groove.

3. The reflow solder chain assist device of claim 1, wherein, The two side walls of the groove extend to the direction of the rotating wheel and form guide walls for guiding the chain.

4. The reflow solder chain assist device of claim 3, wherein, The guide walls on the two sides of the groove extend to the outside direction and form straightening walls for preventing the chain from deviating.

5. The reflow solder chain assist device of claim 1, wherein, The bottom wall of the groove is a plane and is parallel to the tangent direction of the top surface of the rotating wheel.

6. The reflow solder chain assist device of claim 1, wherein, The width of the groove matches the width of the chain.

7. The reflow soldering chain assist device according to any one of claims 1 to 6, characterized by, The mounting seat is detachably mounted below the chain bracket, the groove is located on the outside edge of the mounting seat, the rotating wheel mounting shaft is fixed on the mounting seat and is located on the same outside edge of the mounting seat as the groove.

8. The reflow solder chain assist device of claim 7, wherein, The chain bracket also has a mounting portion, the mounting portion is provided with a mounting hole, and the mounting seat is mounted below the mounting portion through screws.

9. The reflow solder chain assist device of claim 7, wherein, The chain bracket is made of wear-resistant material.

10. A reflow soldering apparatus comprising a drive chain, characterized in that The reflow soldering chain auxiliary device of any one of claims 1 to 9 is also provided, and the chain bracket of the reflow soldering chain auxiliary device is used to support the transmission chain.

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