A barrier device and reflow soldering apparatus

Abstract

This application relates to a barrier device and a reflow soldering equipment. The barrier device includes a first bellows-type cover and a second bellows-type cover spaced apart along a first direction. A first end of the first bellows-type cover is used to fix it to an external device. A first end of the second bellows-type cover is also used to fix it to an external device. A gap is formed between the second ends of the first and second bellows-type covers along the first direction, and the gap is used for the passage of workpieces to be processed. Both the second ends of the first and second bellows-type covers are movable along the first direction to adjust the length of the gap along the first direction, thereby adapting the gap to accommodate workpieces of different sizes. Furthermore, the first and second bellows-type covers form a barrier, effectively reducing nitrogen leakage when the barrier device is installed at the inlet of the reflow soldering equipment.

Description

Technical Field

[0001] This application relates to the field of barrier device technology, and more particularly to a barrier device and a reflow soldering equipment. Background Technology

[0002] Reflow soldering is a common soldering process used in electronic device manufacturing to fix electronic components onto printed circuit boards. During operation, the reflow soldering equipment needs to be filled with nitrogen, an inert gas, to prevent oxidation of the printed circuit board in the preheating or soldering zone, thereby improving solder joint wettability, reducing voids, and improving soldering quality.

[0003] Reflow soldering equipment has an inlet for feeding components (such as printed circuit boards) into the equipment. To accommodate printed circuit boards of different sizes, the inlet is designed to be relatively large, which makes it prone to nitrogen leakage.

[0004] There is an urgent need to design a barrier device to effectively reduce nitrogen leakage and adapt to workpieces of different sizes. Utility Model Content

[0005] In view of the above problems, embodiments of this application provide a barrier device and a reflow soldering equipment, which overcome the above problems or at least partially solve the above problems.

[0006] According to one aspect of the embodiments of this application, a barrier device is provided, including a first accordion-style cover and a second accordion-style cover spaced apart along a first direction; a first end of the first accordion-style cover is used to fix to an external device; a first end of the second accordion-style cover is used to fix to an external device; a gap is formed between the second ends of the first accordion-style cover and the second end of the second accordion-style cover along the first direction, the gap being used for a workpiece to pass through; both the second ends of the first accordion-style cover and the second end of the second accordion-style cover are movable along the first direction to adjust the length of the gap along the first direction.

[0007] In one alternative implementation, the blocking device further includes a guide member, one end of which extends to a first end of the first accordion-style cover, and the other end of which extends to a first end of the second accordion-style cover. The guide member passes through a second end of both the first and second accordion-style covers, and the second end of both the first and second accordion-style covers is slidable along the guide member.

[0008] In one alternative implementation, the portion of the guide located in the gap is used to carry the workpiece to be processed.

[0009] In one alternative implementation, the blocking device further includes a guide rod, one end of which extends to a first end of the first accordion-style cover, and the other end of which extends to a first end of the second accordion-style cover. The guide rod passes through a second end of both the first and second accordion-style covers. The second end of both the first and second accordion-style covers is slidable along the guide rod. The guide rod is spaced apart from the guide member.

[0010] In one alternative implementation, the number of guide rods is two, and the two guide rods are spaced apart.

[0011] In one optional implementation, the gap is used for the direction in which the workpiece passes through to be a second direction. The blocking device further includes a cover, which includes a top wall and a first side wall and a second side wall respectively connected to the top wall. The first side wall and the second side wall are spaced apart along the second direction. Along a third direction, the top wall covers a portion of the first accordion-style cover, a portion of the gap, and a portion of the second accordion-style cover. The first direction, the second direction, and the third direction are perpendicular to each other. Along the second direction, both the first side wall and the second side wall cover a portion of the first accordion-style cover, a portion of the gap, and a portion of the second accordion-style cover.

[0012] In one alternative implementation, the cover further includes a third sidewall and a fourth sidewall spaced apart along the first direction, the third sidewall covering a portion of the first end of the first accordion-style cover, and the fourth sidewall covering a portion of the first end of the second accordion-style cover.

[0013] In one alternative implementation, a first protrusion is provided at the second end of the first accordion-style cover, and a second protrusion is provided at the second end of the second accordion-style cover.

[0014] In one alternative implementation, a first mounting portion is provided at the first end of the first accordion-style cover, and a second mounting portion is provided at the first end of the second accordion-style cover.

[0015] According to one aspect of the embodiments of this application, a reflow soldering apparatus is provided, including a body and the aforementioned barrier device; the body is provided with an inlet, and the barrier device covers the inlet to leave a gap for the workpiece to be processed to enter the body; a first end of a first accordion-type cover is fixed to the body; and a first end of a second accordion-type cover is fixed to the body.

[0016] The beneficial effects of this application embodiment are as follows: A barrier device is provided, including a first accordion-style cover and a second accordion-style cover spaced apart along a first direction; a first end of the first accordion-style cover is used to fix it to an external device; a first end of the second accordion-style cover is used to fix it to an external device; a gap is formed between the second ends of the first and second accordion-style covers along the first direction, the gap being used for the passage of a workpiece; both the second ends of the first and second accordion-style covers can move along the first direction to adjust the length of the gap along the first direction, improving the adaptability of the gap to workpieces of different sizes. That is, when the second ends of the first and second accordion-style covers move towards each other along the first direction, the length of the gap along the first direction decreases, adapting to smaller workpieces; when the second ends of the first and second accordion-style covers move away from each other along the first direction, the length of the gap along the first direction increases, adapting to larger workpieces.

[0017] In addition, due to the presence of the first and second bellows-type covers, the first and second bellows-type covers form a barrier, which can effectively reduce nitrogen leakage when the barrier device is installed at the inlet of the reflow soldering equipment.

[0018] Equally important, the gap between the first and second accordion-style covers in the barrier device is used for the workpiece to pass through, so that the workpiece can be processed without contact with the first and second accordion-style covers, avoiding contamination of the workpiece and ensuring the yield rate of the workpiece. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a partial schematic diagram of the reflow soldering equipment provided in the embodiments of this application.

[0021] Figure 2 This is a schematic diagram of one implementation of the blocking device provided in the embodiments of this application.

[0022] Figure 3 This is a schematic diagram of another implementation of the barrier device provided in the embodiments of this application.

[0023] The labels in the attached diagram are as follows: 100. Reflow soldering equipment; 10. Barrier device; 20. Main body; 201. Inlet; 1. First accordion-style cover; 2. Second accordion-style cover; 3. Guide component; 4. Guide rod; 5. Cover; 10s, gap; d, length of the gap; 11. The first end of the first accordion-style cover; 12. The second end of the first accordion-style cover; 21. The first end of the second accordion-style cover; 22. The second end of the second accordion-style cover; 101. First plate; 102. Second plate; 103. Pleated unit; 51. Top wall; 52. First side wall; 53. Second side wall; 54. Third side wall; 55. Fourth side wall; 111. First mounting part; 121. First protrusion; 211. Second mounting part; 221. Second protrusion; D1, First Direction; D2, Second Direction; D3, Third Direction. Detailed Implementation

[0024] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figure 1 This application provides a reflow soldering equipment 100, including a barrier device 10 and a body 20. The body 20 is provided with an inlet 201. The barrier device 10 covers the inlet 201. The barrier device 10 is used to reduce the loss rate of nitrogen gas filled in the body 20. The barrier device 10 is used to allow workpieces (e.g., printed circuit boards) to pass through and enter the interior of the body 20 for processing.

[0027] The body 20 of the reflow soldering equipment 100 is the component that realizes the function of the reflow soldering equipment 100. For example, the body 20 includes a furnace body and a conveyor belt. The conveyor belt carries the printed circuit board and feeds it into the furnace body. Heating elements are installed inside the furnace body to heat the printed circuit board. The board inlet 201 is located at the front end of the conveyor belt. Of course, it can be understood that the body 20 of the reflow soldering equipment 100 may also include other components, such as an electrical module, a control module, a cooling zone, and an exhaust system.

[0028] Please see Figure 2 This application provides a barrier device 10, including a first accordion-style cover 1 and a second accordion-style cover 2 spaced apart along a first direction D1; the first end 11 of the first accordion-style cover 1 is used to fix to an external device (e.g., the body 20 of a reflow soldering machine 100); the first end 21 of the second accordion-style cover 2 is used to fix to an external device (e.g., the body 20 of a reflow soldering machine 100); along the first direction D1, a gap 10s is formed between the second end 12 of the first accordion-style cover 1 and the second end 22 of the second accordion-style cover 2, the gap 10s being used for the passage of a workpiece; both the second end 12 of the first accordion-style cover 1 and the second end 22 of the second accordion-style cover 2 are movable along the first direction D1 to adjust the length d of the gap 10s along the first direction D1, thereby improving the adaptability of the gap 10s to the passage of workpieces of different sizes. That is, when the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 move toward each other along the first direction D1, the length d of the gap 10s along the first direction D1 decreases, adapting to smaller-sized workpieces to be processed; when the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 move away from each other along the first direction D1, the length d of the gap 10s along the first direction D1 increases, adapting to larger-sized workpieces to be processed.

[0029] It is worth noting that the dimensions of the workpiece to be processed in this application refer to the length of the workpiece along the first direction D1.

[0030] In addition, due to the presence of the first accordion-type cover 1 and the second accordion-type cover 2, the first accordion-type cover 1 and the second accordion-type cover 2 form a barrier effect. When the barrier device 10 is installed at the inlet 201 of the reflow soldering equipment 100, nitrogen leakage can be effectively reduced.

[0031] Equally important, the gap 10s between the first accordion-style cover 1 and the second accordion-style cover 2 in the barrier device 10 is used for the workpiece to pass through. The workpiece can be made without contact with the first accordion-style cover 1 and the second accordion-style cover 2, avoiding contamination of the workpiece, ensuring the yield of the workpiece (the yield can be increased by more than 5%), and reducing rework and scrap losses.

[0032] The method to achieve non-contact between the workpiece and the first accordion-style cover 1 and the second accordion-style cover 2 is as follows: after determining the length of the workpiece along the first direction D1, the second end 12 of the first accordion-style cover 1 is moved, and / or the second end 22 of the second accordion-style cover 2 is moved, so that the length d of the gap 10s along the first direction D1 is 2mm-10mm larger than the length of the workpiece along the first direction D1, thereby making the distance between the workpiece and the second end 12 of the first accordion-style cover 1 1mm-5mm. Similarly, the distance between the workpiece and the second end 22 of the second accordion-style cover 2 is 1mm-5mm, thus achieving a non-contact state between the workpiece and the first accordion-style cover 1 and the second accordion-style cover 2.

[0033] In some embodiments, the first accordion-style cover 1 includes a first plate 101, a second plate 102, and a plurality of pleated units 103. The first plate 101 and the second plate 102 are spaced apart along the first direction D1. The first plate 101 forms the first end 11 of the first accordion-style cover 1, and the second plate 102 forms the second end 22 of the second accordion-style cover 2. The plurality of pleated units 103 are connected between the first plate 101 and the second plate 102 and are connected sequentially along the first direction D1. Through the arrangement of the plurality of pleated units 103 and the first end 11 of the first accordion-style cover 1 being fixed to an external device, the first accordion-style cover 1 has good telescopic performance, enabling the second end 12 of the first accordion-style cover 1 to move freely along the first direction D1, thereby adjusting the length d of the gap 10s along the first direction D1 to adapt to workpieces of different sizes.

[0034] It is worth noting that in some embodiments, the pleated unit 103 is made of a flexible material that is resistant to high temperatures and corrosion. In some embodiments, the pleated unit 103 is made of nylon leather.

[0035] Similarly, the structure and material of the second accordion-style cover 2 are the same as those of the first accordion-style cover 1, giving the second accordion-style cover 2 good extensibility. It can flexibly adjust the length d of the gap 10s according to the size of the workpiece, thus enabling non-contact passage of the workpiece without causing excessive nitrogen leakage due to a large gap 10s along the first direction D1. This ensures the stability of the nitrogen environment inside the reflow soldering equipment 100, improving welding quality and production efficiency. At the same time, reducing nitrogen leakage saves nitrogen consumption costs and improves the economic efficiency of the reflow soldering equipment 100.

[0036] In some embodiments, the barrier device 10 further includes a guide 3, one end of which extends to the first end 11 of the first accordion-style cover 1. The guide 3 may be fixed to the first end 11 of the first accordion-style cover 1 or fixed to an external device (e.g., the body 20 of the reflow soldering equipment 100). The other end of the guide 3 extends to the first end 21 of the second accordion-style cover 2. The guide 3 may be fixed to the first end 21 of the second accordion-style cover 2 or fixed to an external device (e.g., the body 20 of the reflow soldering equipment 100). The guide 3 passes through the second end 12 of the first accordion-style cover 1 and the second end 22 of the second accordion-style cover 2. The second end 12 of the first accordion-style cover 1 can slide along the guide 3, and the second end 22 of the second accordion-style cover 2 can slide along the guide 3. By setting the guide 3, the movement of the second end 12 of the first bellows-type cover 1 and the second end 22 of the second bellows-type cover 2 becomes more stable, reducing the risk of gap 10s offset or deformation, thereby ensuring that the workpiece to be processed passes smoothly through the gap 10s and maintaining the reliability of the reflow soldering equipment 100 operation.

[0037] In some embodiments, the portion of the guide 3 located in the gap 10s is used to carry the workpiece to be processed. The portion of the guide 3 located in the gap 10s can directly carry the workpiece to be processed, or the guide 3 can indirectly carry the conductive element through a conveying device carrying the workpiece to be processed. This design reduces vibration or offset of the workpiece to be processed during transport, allowing it to pass through the gap 10s more smoothly.

[0038] In some embodiments, the blocking device 10 further includes a guide rod 4, one end of which extends to the first end 11 of the first accordion-style cover 1 and is fixed to the first end 11 of the first accordion-style cover 1; the other end of which extends to the first end 21 of the second accordion-style cover 2 and is fixed to the first end 21 of the second accordion-style cover 2; the guide rod 4 passes through the second end 12 of the first accordion-style cover 1 and the second end 22 of the second accordion-style cover 2, the second end 12 of the first accordion-style cover 1 being able to slide along the guide rod 4, and the second end 22 of the second accordion-style cover 2 being able to slide along the guide rod 4; the guide rod 4 is spaced apart from the guide member 3. By setting the guide rod 4, the guiding stability of the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 during the movement is further enhanced, the risk of gap 10s offset or deformation is further reduced, thereby further ensuring that the workpiece to be processed passes through the gap 10s smoothly and maintaining the reliability of the reflow soldering equipment 100 operation.

[0039] In some embodiments, there are two guide rods 4, which are spaced apart. With these two guide rods 4, the two guide rods 4 and the guide member 3 work together to ensure that the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 are subjected to more even force during movement. This further enhances the guiding stability of the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 during movement, further reduces the risk of gap 10s offset or deformation, and thus further ensures that the workpiece passes smoothly through the gap 10s and maintains the reliability of the reflow soldering equipment 100 operation.

[0040] In some embodiments, please refer to Figure 3 and combination Figure 2 The gap 10s is used for the direction in which the workpiece passes through, which is the second direction D2. The blocking device 10 also includes a cover 5. The cover 5 includes a top wall 51 and a first side wall 52 and a second side wall 53 respectively connected to the top wall 51. The first side wall 52 and the second side wall 53 are spaced apart along the second direction D2. Along the third direction D3, the top wall 51 covers a portion of the first accordion-style cover 1, a portion of the gap 10s, and a portion of the second accordion-style cover 2. The first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other. Along the second direction D2, the first side wall 52 and the second side wall 53 both cover a portion of the first accordion-style cover 1, a portion of the gap 10s, and a portion of the second accordion-style cover 2. With this configuration, the top wall 51, the first side wall 52, and the second side wall 53 shield the gap 10s but do not close the gap 10s. When the blocking device 10 is installed in the reflow soldering equipment 100, it can further reduce the amount of nitrogen leakage without closing the gap 10s, leaving space for the workpiece to pass through, thereby ensuring that the workpiece can pass through the gap 10s.

[0041] In addition, due to the arrangement of the top wall 51, the first side wall 52 and the second side wall 53, they can also play a guiding role during the movement of the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2, thereby improving the stability of the movement of the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 and further reducing the risk of gap 10s offset or deformation.

[0042] It is worth noting that when the barrier device 10 is provided with the guide member 3, in some embodiments, the cover 5 and the guide member 3 are spaced apart along the third direction D3. The arrangement of the cover 5 and the guide member 3 reduces the height of the gap 10s along the third direction D3. When the barrier device 10 is assembled with the reflow soldering equipment 100, the amount of nitrogen leakage can be further reduced.

[0043] It is worth noting that, in some embodiments, the cover 5 further includes a third sidewall 54 and a fourth sidewall 55 spaced apart along the first direction D1. The third sidewall 54 covers a portion of the first end 11 of the first accordion-style cover 1, and the fourth sidewall 55 covers a portion of the first end 21 of the second accordion-style cover 2. Along the first direction D1, the first accordion-style cover 1 and the second accordion-style cover 2 are supported between the third sidewall 54 and the fourth sidewall 55, improving the stability and guiding effect of the second end 12 of the first accordion-style cover 1 and the second end 22 of the second accordion-style cover 2 during movement, further reducing the risk of gap 10s offset or deformation, and improving the smoothness of the workpiece passing through the gap 10s.

[0044] It is worth noting that in some embodiments, the second end 12 of the first accordion-type cover 1 is provided with a first protrusion 121, and the second end 22 of the second accordion-type cover 2 is provided with a second protrusion 221. The first protrusion 121 is used to move the second end 12 of the first accordion-type cover 1 along the first direction D1, and the second protrusion 221 is used to move the second end 22 of the second accordion-type cover 2 along the first direction D1. By providing the first protrusion 121 and the second protrusion 221, the convenience of adjusting the movement of the second end 12 of the first accordion-type cover 1 and the second end 22 of the second accordion-type cover 2 is improved, thereby improving the convenience of adjusting the length d of the gap 10s along the first direction D1, enabling the barrier device 10 to more efficiently adapt to workpieces of different sizes, and improving the applicability and flexibility of the barrier device 10.

[0045] It is worth noting that in some embodiments, the first end 11 of the first bellows-type cover 1 is provided with a first mounting part 111, and the first end 21 of the second bellows-type cover 2 is provided with a second mounting part 211. The first mounting part 111 is used to fix the first end 11 of the first bellows-type cover 1 to an external device (e.g., the body 20 of the reflow soldering equipment 100), and the second mounting part 211 is used to fix the first end 21 of the second bellows-type cover 2 to an external device (e.g., the body 20 of the reflow soldering equipment 100). By setting the first mounting part 111 and the second mounting part 211, the fixed position of the first bellows-type cover 1 and the second bellows-type cover 2 can be precisely controlled, thereby ensuring the assembly stability of the entire barrier device 10 in the reflow soldering equipment 100.

[0046] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A barrier device, characterized in that include: A first accordion-style cover and a second accordion-style cover are arranged at intervals along a first direction; The first end of the first accordion-style cover is used to fix it to an external device; The first end of the second accordion-style cover is used to fix it to an external device; Along the first direction, a gap is formed between the second end of the first accordion-style cover and the second end of the second accordion-style cover, the gap being used for the passage of the workpiece to be processed; Both the second end of the first accordion-style cover and the second end of the second accordion-style cover can move along the first direction to adjust the length of the gap along the first direction.

2. The barrier device of claim 1, wherein, The blocking device further includes a guide member, one end of which extends to the first end of the first accordion-style cover, and the other end of which extends to the first end of the second accordion-style cover. The guide member passes through the second end of the first accordion-style cover and the second end of the second accordion-style cover. The second end of the first accordion-style cover can slide along the guide member, and the second end of the second accordion-style cover can slide along the guide member.

3. The barrier device of claim 2, wherein, The portion of the guide located in the gap is used to support the workpiece to be processed.

4. The barrier device of claim 2, wherein, The blocking device also includes a guide rod, one end of which extends to the first end of the first accordion-style cover, and the other end of which extends to the first end of the second accordion-style cover. The guide rod passes through the second end of the first accordion-style cover and the second end of the second accordion-style cover. The second end of the first accordion-style cover and the second end of the second accordion-style cover are slidable along the guide rod. The guide rod is spaced apart from the guide member.

5. The barrier device of claim 4, wherein, The number of guide rods is two, and the two guide rods are spaced apart.

6. The barrier device according to any one of claims 1-5, wherein, The gap is used so that the direction of the workpiece to be processed is a second direction. The blocking device also includes a cover, which includes a top wall and a first side wall and a second side wall respectively connected to the top wall. The first side wall and the second side wall are spaced apart along the second direction. Along a third direction, the top wall covers a portion of the first accordion-style cover, a portion of the gap, and a portion of the second accordion-style cover, with the first direction, the second direction, and the third direction being perpendicular to each other; Along the second direction, both the first sidewall and the second sidewall cover a portion of the first accordion-style cover, a portion of the gap, and a portion of the second accordion-style cover.

7. The barrier device of claim 6, wherein, The cover also includes a third sidewall and a fourth sidewall spaced apart along the first direction, the third sidewall covering a portion of the first end of the first accordion-style cover, and the fourth sidewall covering a portion of the first end of the second accordion-style cover.

8. The barrier device of any one of claims 1-5, wherein, The second end of the first accordion-style cover is provided with a first protrusion, and the second end of the second accordion-style cover is provided with a second protrusion.

9. The barrier device of any of claims 1-5, wherein, The first end of the first accordion-style cover is provided with a first mounting part, and the first end of the second accordion-style cover is provided with a second mounting part.

10. A reflow soldering apparatus characterized by comprising: The device includes a body and a barrier device as described in any one of claims 1-9; the body is provided with an inlet, and the barrier device covers the inlet to leave a gap for the workpiece to enter the body; the first end of the first accordion-style cover is fixed to the body; the first end of the second accordion-style cover is fixed to the body.

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