CN112188755A

CN112188755A - Sealing assembly and reflow soldering furnace with same

Info

Publication number: CN112188755A
Application number: CN201910605063.2A
Authority: CN
Inventors: 王玉伟
Original assignee: Illinois Tool Works Inc
Current assignee: Illinois Tool Works Inc
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2021-01-05

Abstract

A sealing assembly is used for mounting and sealing between an upper hearth and a lower hearth of a reflow oven and comprises a sealing strip and a mounting seat, and the mounting seat is arranged at the bottom of the sealing strip. The mounting seat is used for being installed on the reflow soldering furnace, and the sealing strip has elasticity, can install on the mounting seat detachably. The supporting part sets up in one side of sealing, and the supporting part is closer to reflow oven's furnace position than sealing. The setting of mount pad can realize fast-assembling and the quick detach of sealing strip, and the pressure that the sealing received can be alleviateed greatly in the setting of supporting part, and effectively completely cut off the erosion that comes from inside heat and the scaling powder of reflow soldering stove, has prolonged the life of sealing strip greatly.

Description

Sealing assembly and reflow soldering furnace with same

Technical Field

The application relates to the technical field of sealing assemblies, in particular to a sealing assembly for a reflow oven.

Background

Reflow ovens are commonly used to implement surface soldering processes for Printed Circuit Boards (PCBs). During soldering of Printed Circuit Boards (PCBs), a high temperature needs to be maintained in some areas within the reflow oven, and the reflow oven is typically filled with an inert gas as a shielding gas. In order to ensure the heating temperature in the reflow oven and prevent the inert gas from escaping from the reflow oven, the reflow oven is often provided with a sealing strip between the upper furnace chamber and the lower furnace chamber. The sealing strip needs to bear the weight of the upper hearth and the high temperature in the reflow soldering furnace, so that the sealing strip is easy to age and needs to be replaced and updated in time.

Disclosure of Invention

One of the objectives of the present application is to provide an improved sealing assembly, which can facilitate the installation and replacement of the sealing strip and prolong the service life of the sealing strip.

In order to achieve the above object, a first aspect of the present application provides a seal assembly for mounting a seal between upper and lower hearths of a reflow oven, wherein the seal assembly comprises a support portion, a seal portion and a mounting seat. The supporting part is in a long strip shape; the sealing part has elasticity, the length direction of the sealing part is consistent with that of the supporting part, and the sealing part is positioned on one side of the supporting part in the width direction and is connected with the supporting part; the support portion and the sealing portion are detachably mounted on the mounting seat.

As described above, the mounting seat is mounted on the side mounting portion of the upper hearth or the lower hearth along the length direction.

As with the seal assembly described above, the side mounting portion is a platform extending outwardly from a side of the upper hearth or the lower hearth.

As with the seal assembly described hereinbefore, the support portion is a solid body.

As in the seal assembly described hereinbefore, the support portion and the sealing portion are both made of an elastic material, and the mounting seat is made of a metal material.

As in the seal assembly described hereinbefore, the height of the sealing portion is greater than the height of the support portion.

As with the seal assembly described hereinbefore, the bottom of the seal portion and the bottom of the support portion are joined to form a base portion.

As in the seal assembly described hereinbefore, there is a space between the upper part of the support portion and the upper part of the seal portion when the support portion and the seal portion are in a free state.

The sealing assembly as described in the foregoing, the mounting seat includes a bottom plate and two side plates, the length directions of the bottom plate and the two side plates are the same, the two side plates are respectively connected to two sides of the bottom plate in the width direction, and the two side plates are respectively inclined with respect to each other, so that the two side plates and the bottom plate jointly constitute an accommodating space.

In the seal assembly as described above, the two sides of the base portion formed by the sealing portion and the supporting portion together respectively have an inward inclined surface, so that the base portion can be snap-fitted into the receiving space.

As in the seal assembly described above, the sealing portion has a hollow structure, and any cross section of the sealing portion is annular.

The sealing assembly as described above, the top of the sealing portion is spaced apart by a plurality of synapses, each of the synapses extending along a length of the sealing portion, and the sealing portion is integrally formed with the synapses.

A second aspect of the present application is to provide a reflow oven including an upper hearth, a lower hearth, and first and second seal assemblies. The upper furnace chamber comprises two opposite upper side edges extending along the length direction of the upper furnace chamber; the lower hearth comprises two opposite lower side edges extending along the length direction of the lower hearth; the first or second seal assembly of any preceding claim, each mounted between respective upper and lower sides along the length of the upper hearth.

As mentioned above, the mounting seat of the first sealing assembly and the mounting seat of the second sealing assembly are respectively and fixedly connected to the two lower side edges of the lower furnace.

As mentioned above, the mounting seat of the first sealing assembly and the mounting seat of the second sealing assembly are fixed to the two lower sides of the lower furnace by screws or bolts.

The sealing assembly of this application is provided with the mount pad in the below of sealing strip, and the mount pad can be fixed on the casing of reflow oven to the sealing strip can be installed on the mount pad through elasticity extrusion detachably, and this setting has realized the quick installation and the dismantlement of sealing strip, makes things convenient for the replacement of sealing strip to update greatly. The sealing strip is also internally provided with the sealing part and the supporting part at the same time, and the supporting part can bear most of pressure from the upper hearth, so that the pressure of the sealing part is greatly reduced; in addition, this application still installs the supporting part in the furnace one side that is close to the reflow soldering stove to for the sealing has blockked the heat radiation in the reflow soldering stove, and has hindered the scaling powder in the reflow soldering stove to the erosion of sealing, consequently the sealing strip of this application helps delaying ageing and increase of service life.

Drawings

Fig. 1A is a perspective view of a reflow oven 100 in an embodiment of the present application;

FIG. 1B is an enlarged view of the reflow oven 100 shown in FIG. 1A at location A;

FIG. 2 is a perspective view of the seal assembly 104 shown in FIG. 1A;

FIG. 3 is an exploded view of the seal assembly 104 shown in FIG. 2;

fig. 4 is a cross-sectional view of the seal assembly 104 shown in fig. 3 taken along line B-B.

Detailed Description

Various embodiments of the present application will now be described with reference to the accompanying drawings, which form a part hereof. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," "right," and the like may be used herein to describe various example structural portions and elements of the application, these terms are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the embodiments disclosed herein can be arranged in a variety of orientations, these directional terms are used for purposes of illustration only and are not to be construed as limiting.

Fig. 1A is a perspective view of a reflow oven 100 according to an embodiment of the present application. As shown in fig. 1A, the reflow oven 100 is generally rectangular and includes an upper chamber 101 and a lower chamber 102. The upper furnace 101 includes an upper furnace housing 105, and the upper furnace housing 105 has a receiving space therein for receiving an upper furnace heating device. The lower furnace 102 includes a lower furnace housing 106, and the lower furnace housing 106 also has a receiving space therein for receiving the lower furnace heating device.

The upper hearth 101 and the lower hearth 102 have the same length direction, and the upper hearth 101 is located above the lower hearth 102 and arranged oppositely. When the reflow furnace needs cleaning and maintenance, the upper furnace chamber 101 can be disassembled from above the lower furnace chamber 102. The upper furnace casing 105 includes a roof 114, a first upper side 111 and a second upper side 112, and the first upper side 111 and the second upper side 112 extend downward from both sides of the roof 114, respectively, so that the upper furnace 101 forms an upper furnace receiving space 113. The lower furnace shell 106 includes a bottom 124, a first lower side 121 and a second lower side 122, the first lower side 121 and the second lower side 122 respectively extend upward from both sides of the bottom 124, so that the lower furnace 102 forms a lower furnace accommodating space 123. When the upper furnace 101 covers the lower furnace 102, the upper furnace accommodating space 113 and the lower furnace accommodating space 123 are integrated to form the furnace accommodating space 103. The chamber receiving space 103 extends through the length of the reflow oven 100 for receiving Printed Circuit Boards (PCBs) to be soldered and for receiving a conveyor for carrying and transferring the PCBs.

The upper hearth 101 comprises two upper sides which are oppositely arranged in the width direction of the upper hearth 101 and extend along the length direction of the upper hearth 101; the lower furnace 102 includes two lower sides, which are disposed opposite to each other in the width direction of the lower furnace 102 and extend along the length direction of the lower furnace 102. The reflow oven 100 is provided with side mounting portions 135 at two side positions in the width direction thereof, respectively, and the side mounting portions 135 are located at positions where the upper furnace 101 and the lower furnace 102 are oppositely disposed, that is, at a position of an upper side of the upper furnace 101 and a position of a lower side of the lower furnace 102, respectively. The side mounting portions 135 extend along the length of the upper and

lower hearths

101 and 102 for mounting the two seal assemblies 104. The two sealing components 104 are respectively a first sealing component 104.1 and a second sealing component 104.2, are arranged between the upper hearth 101 and the lower hearth 102, and both extend along the length direction of the upper hearth 101 and the lower hearth 102, and are used for sealing two sides of the hearth accommodating space 103 in the width direction. Wherein the first sealing assembly 104.1 is used for sealing between the first upper side 111 and the first lower side 121, and the second sealing assembly 104.2 is used for sealing between the second upper side 112 and the second lower side 122.

Fig. 1B is an enlarged view of the reflow oven 100 shown in fig. 1A at position a. This embodiment uses the hearth connection as a side mount for securing the seal assembly 104. As shown in fig. 1B, a first upper hearth connection member 107 and a first lower hearth connection member 108 are provided on the left sides of the upper and

lower hearth housings

105 and 106, respectively. The first upper and

lower hearth connections

107, 108 are platforms extending outwardly from the side edges of the upper and

lower hearth housings

105, 106, respectively, for holding the first seal assembly 104.1. As can be seen in connection with fig. 1A, the right sides of the upper and

lower hearth housings

105, 106 are provided with a second upper and

lower hearth connection

109, 110, respectively, for securing the second seal assembly 104.2. The first upper hearth connection member 107 and the second upper hearth connection member 109 are symmetrically disposed at left and right sides of the reflow soldering furnace 100, and the first lower hearth connection member 108 and the second lower hearth connection member 110 are symmetrically disposed at left and right sides of the reflow soldering furnace 100. Since the first sealing assembly 104.1 and the second sealing assembly 104.2 have the same structure and the two sealing assemblies 104 are symmetrically arranged on both sides of the reflow oven 100 in the width direction, the present application only takes the first sealing assembly 104.1 located on the left side of the reflow oven 100 as an example to describe the specific structure of the sealing assembly 104 and the installation manner of the first upper furnace connecting piece 107 and the first lower furnace connecting piece 108.

As shown in fig. 1A and 1B, the first upper hearth connecting member 107 and the first lower hearth connecting member 108 are disposed vertically symmetrically, both of which are long and extend along the length direction of the upper hearth 101, respectively, and the first sealing assembly 104.1 is disposed between the first upper hearth connecting member 107 and the first lower hearth connecting member 108. The outer surface of the upper furnace housing 105 on the left side is defined as a first upper sidewall 131, and the length direction of the first upper sidewall 131 is identical to the length direction of the upper furnace housing 105. As shown in fig. 1B, the first upper hearth connection member 107 is provided at a bottom position of the first upper side wall 131, and one end of the first upper hearth connection member 107 in the width direction is connected to a bottom edge of the first upper side wall 131. The first upper hearth connection 107 extends outwardly from a bottom edge of the first upper side wall 131 such that a bottom surface of the first upper hearth connection 107 is substantially planar with a bottom surface 133 of the first upper side 111. The first upper hearth connection member 107 extends outwardly for a distance in a direction parallel to the bottom surface 133 of the first upper side portion 111, and then forms an upper flap 115 upwardly such that the upper flap 115 is substantially parallel to the first upper side wall 131. The formation of the upper flange 115 contributes to the structural stability of the first upper hearth connection 107.

Similarly, the outer surface of the lower furnace shell 106 on the left side is defined as a first lower sidewall 132, and the length direction of the first lower sidewall 132 is the same as the length direction of the lower furnace shell 106. The first lower furnace connecting member 108 is disposed at the top position of the first lower sidewall 132, and one end of the first lower furnace connecting member 108 in the width direction is connected to the top edge of the first lower sidewall 132. The first lower furnace connection member 108 extends outwardly from the top edge of the first lower sidewall 132 such that the top surface of the first lower furnace connection member 108 is substantially coplanar with the top surface 134 of the first lower side 121. The first lower furnace connection member 108 extends outwardly a distance in a direction parallel to the top surface 134 of the first lower side portion 121 and then forms the lower hem 114 downwardly such that the lower hem 114 is generally parallel to the first lower sidewall 132. The formation of the lower hem 114 is advantageous for enhancing the structural stability of the first lower hearth connection 108.

In this embodiment, the first upper hearth connection member 107 is integrally constructed with the first upper side wall 131, and the first lower hearth connection member 108 is integrally constructed with the first lower side wall 132. In other embodiments, the first upper hearth connection member 107 and the first upper side wall 131, and the first lower hearth connection member 108 and the first lower side wall 132 may be separately provided, for example, the first upper hearth connection member 107 is fixed to the first upper side wall 131 by welding or fastening by screws, bolts, etc., and the first lower hearth connection member 108 is fixed to the first lower side wall 132 by welding or fastening by screws, bolts, etc.

In the embodiment, the hearth connectors (the first upper hearth connector 107, the first lower hearth connector 108, the second upper hearth connector 109 and the second lower hearth connector 110) are used as the side edge mounting parts of the upper hearth 101 and the lower hearth 102 to fix the sealing assembly 104, so that the sealing assembly 104 can be far away from the hearth of the reflow soldering furnace 100 as far as possible, the influence of high temperature in the hearth and soldering flux from a Printed Circuit Board (PCB) on the sealing assembly is reduced, and the service life of the sealing assembly 104 is prolonged. In other embodiments, the lower body of the upper furnace 101 and the upper body of the lower furnace 102 can be directly used as the side mounting portions to fix the sealing assembly 104. In particular, it is possible to fix the first sealing assembly 104.1 directly between the first upper side 111 of the upper hearth 101 and the first lower side 121 of the lower hearth 102 and to fix the second sealing assembly 104.2 directly between the second upper side 112 of the upper hearth 101 and the second lower side 122 of the lower hearth 102. Since the reflow oven 100 is symmetrically disposed on the left and right sides, taking the left side of the reflow oven 100 as an example for description, at this time, the top end of the first sealing assembly 104.1 abuts against the bottom surface 133 of the first upper side portion 111, and the bottom end of the sealing assembly 104 is fixed on the top surface 134 of the first upper side portion 121, so that the left side of the reflow oven 100 can be sealed.

Fig. 2 is a perspective view of the first seal assembly 104.1 shown in fig. 1A; FIG. 3 is an exploded view of the seal assembly 104 shown in FIG. 2; fig. 4 is a cross-sectional view of the seal assembly 104 shown in fig. 3 taken along line B-B. As shown in fig. 2, the seal assembly 104 is elongated and includes a seal strip 204 and a mounting seat 203, the mounting seat 203 being located at the bottom of the seal strip 204. The sealing strip 204 and the mounting seat 203 are both long-strip-shaped, and the length direction of the sealing strip and the length direction of the mounting seat 203 are consistent with the length direction of the sealing assembly 104. The sealing strip 204 is made of an elastic material and the mount 203 is made of a metal material. In other embodiments, the mounting seat 203 may be made of other materials with high hardness and good heat resistance.

As can be seen in connection with fig. 1B, when the seal assembly 104 is installed between the upper chamber housing 105 and the lower chamber housing 106 of the reflow oven 100, the mounting seat 203 is installed on the upper surface of the first lower chamber connector 108, and the top of the sealing strip 204 contacts the lower surface of the first upper chamber connector 107, thereby achieving a sealed installation on the left side of the reflow oven 100. The mounting seat 203 and the first lower furnace connecting member 108 may be connected by welding, or fixing with screws or bolts. In other embodiments, the mounting seat 203 can be mounted on the lower surface of the first upper hearth connection member 107, and the side of the sealing strip 204 away from the mounting seat 203 contacts the upper surface of the first lower hearth connection member 108, so that the side of the reflow oven 100 can be mounted in a sealing manner.

The seal strip 204 includes a support portion 202 and a seal portion 201, the support portion 202 and the seal portion 201 are both long, the seal portion 201 is located on one side of the support portion 202 in the width direction, the two are arranged side by side, and the extending direction is consistent. Supporting part 202 is the solid, and the setting of solid can make things convenient for supporting part 202 to bear and come from the decurrent pressure of last furnace 101, and sealing 201 has inside hollow structure, and hollow structure's setting makes sealing 201 can produce deformation by a wide margin when receiving pressure, is favorable to sealing 201's upper end and the lower surface of first last furnace connecting piece 107 to hug closely to realize going up the sealed between furnace casing 105 and the lower furnace casing 106. In the present embodiment, the support portion 202 and the sealing portion 201 are made of silicone. In other embodiments, different materials may be used to prepare the support portion 202 and the sealing portion 201 separately.

As can be seen in fig. 1B, the support portion 202 is disposed on a side close to the firebox accommodating space 103 of the reflow oven 100, and the sealing portion 201 is disposed on a side away from the firebox accommodating space 103 of the reflow oven 100. Under the operating conditions of the reflow oven 100, the hearth-accommodating space 103 is a high-temperature environment and is dispersed with flux from a Printed Circuit Board (PCB). However, the high temperature environment tends to degrade the seal 204 and flux can cause corrosion of the seal 204. This application is equipped with supporting part 202 in the position department that sealing 201 is close to furnace accommodation space 103, and above-mentioned setting makes the thermal radiation that sealing 201 received weaken because of what supporting part 202 blockked to the ageing speed of sealing 201 has been delayed, and simultaneously, sealing 201 and scaling powder direct contact not have hindered the erosion of scaling powder to sealing 201, thereby has prolonged sealing 201's life.

As shown in fig. 3 and 4, the cross section of the supporting portion 202 is substantially rectangular, and the upper surface of the supporting portion 202 is slightly arched upwards to form an arc surface, and the arc surface is provided to increase the contact area between the upper surface of the supporting portion 202 and the lower surface of the first upper hearth connecting member 107.

The cross section of the sealing part 201 is substantially annular, three convex strips 301 are arranged at the top of the sealing part 201, the three convex strips 301 extend along the length direction of the sealing part 201, and the three convex strips are arranged at intervals in the width direction of the sealing part 201. The convex strip 301 protrudes slightly upward with respect to the upper surface of the ring of the sealing portion 201, and is integrally formed with the ring-shaped sealing portion 201. The provision of the ribs 301 facilitates the top of the sealing portion 201 to form a line seal with the lower surface of the first upper hearth connecting member 107, thereby contributing to the improvement of the sealing performance of the sealing portion 201. In other embodiments, the number of the convex strips 301 can be set to other suitable numbers, such as one, two, four, etc.

In other embodiments, the cross section of the sealing portion 201 may have other shapes, such as a rectangular ring shape, a "W" shape, etc., as long as it can be greatly deformed to achieve the sealing effect, and the cross section of the supporting portion 202 may have other shapes, such as a trapezoid, etc.

As shown in fig. 4, the sealing part 201 has a higher height than the supporting part 202. Because the sealing portion 201 is a hollow structure and the supporting portion 202 is a solid body, the sealing portion 201 has larger elastic deformation than the supporting portion 202 under the same pressure. When the upper hearth 101 is closed over the lower hearth 102, the first upper hearth connection member 107 abuts against the upper portion of the seal strip 204, the support portion 202 mainly plays a supporting role, only a small amount of compressive deformation is generated in the height direction, and the seal portion 201 generates a large amount of deformation, and a large amount of compressive deformation is generated in the height direction. Since the support 202 bears the main pressure from the upper furnace 101, when the sealing part 201 deforms to the same height as the support 202, the sealing part 201 does not continue to deform. At this time, the top of the sealing portion 201 is closely attached to the lower surface of the first upper hearth connecting member 107 due to a large amount of deformation, and mainly plays a role in sealing between the first upper hearth connecting member 107 and the first lower hearth connecting member 108.

When the supporting portion 202 and the sealing portion 201 are in a free state (for example, when the upper hearth 101 is not covered above the lower hearth 102), a space 410 is provided between the upper portion of the supporting portion 202 and the upper portion of the sealing portion 201, and the space 410 is provided to provide a deformation space for the supporting portion 202 and the sealing portion 201 (mainly the sealing portion 201), so that the upper portion of the supporting portion 202 and the upper portion of the sealing portion 201 can be allowed to deform sufficiently, and cannot interfere with each other due to insufficient deformation space.

As shown in fig. 3 and 4, the bottom of the sealing portion 201 and the bottom of the supporting portion 202 are connected to form a base portion 343. Both side surfaces in the width direction of the base portion 343 are inclined surfaces 344 inclined inward, so that the base portion 343 is gradually contracted from the bottom upward in the width direction, so that the cross section of the base portion 343 is substantially an isosceles trapezoid.

The mounting seat 203 includes a bottom plate 341 and two side plates 342, and the length directions of the bottom plate 341 and the two side plates 342 are the same. The bottom plate 341 is a long bar-shaped flat plate, and the two side plates 342 are connected to the end portions of the bottom plate 341 on both sides in the width direction. The two side plates 342 are inclined with respect to each other and form acute angles with the bottom plate 341, respectively, so that the two side plates 342 and the bottom plate 341 together form a receiving space 345, and the cross section of the receiving space 345 is substantially an isosceles trapezoid for engaging with the base portion 343 of the sealing tape 204. In this embodiment, the bottom plate 341 and the two side plates 342 are integrally formed, and the two sides of the elongated flat plate in the width direction are respectively bent inward to form symmetrical acute angles, so as to form the mounting seat 203.

In the embodiment, the accommodating space 345 of the mounting seat 203 and the base part 343 of the sealing strip 204 are structurally matched, the transverse base surfaces are both trapezoidal, and the matching structural arrangement can utilize the elasticity of the sealing strip 204 to directly clamp the base part 343 of the sealing strip 204 in the accommodating space 345 of the mounting seat 203, so that the relatively fixed mounting between the sealing strip 204 and the mounting seat 203 is realized. In other embodiments, the base portion 343 of the sealing strip 204 and the receiving space 345 of the mounting seat 203 may be configured with other shapes to facilitate engagement.

Since the reflow oven 100 needs to be sealed at its sides along the entire length, the length of the sealing strip 204 needs to be the same as the length of the reflow oven 100. The length of reflow oven 100 is about 4 meters to 8 meters, if the mount pad 203 is not adopted, and the sealing strip 204 of 4 meters to 8 meters is directly adhered and fixed on the side of reflow oven 100 through glue, then the sealing strip 204 is difficult to control and adhere because of its slender structure and soft texture, and the adhesion of glue is difficult to ensure the flatness of sealing strip 204, easily causes sealing strip 204 to arch upwards, thereby the gas leakage phenomenon appears.

In the embodiment of the sealing assembly 104 including the mounting seat 203 and the sealing strip 204, the mounting seat 203 can be fixed (for example, welded, screwed or bolted) on the first lower furnace connecting member 108, and then the sealing strip 204 is directly clamped to the mounting seat 203 from above the mounting seat 203, that is, the base portion 343 of the sealing strip 204 is directly accommodated in the accommodating space 345 of the mounting seat 203 by compression deformation without being fixed by screws or bolts. Because the mount pad 203 is made of metal material, it is firm and not easy to deform, so that a fixed mounting rail can be provided for mounting the sealing strip 204, a suitable mounting position of the sealing strip 204 is ensured, the mounting step of the sealing strip 204 is greatly simplified, and the sealing strip 204 is rapidly mounted. In addition, the elastic clamping installation between the sealing strip 204 and the installation seat 203 is more convenient to disassemble, the sealing strip 204 can be smoothly taken out from the installation seat 203 only by applying upward force to the upper part of the sealing strip 204, and the updating and the replacement of the sealing strip 204 are facilitated.

The installation seat 203 is added to the bottom of the sealing strip 204, and the installation seat 203 is fixed on the side of the reflow oven, so that the sealing strip 204 can be quickly assembled and disassembled by clamping connection of the sealing strip 204 and the installation seat 203. In addition, this application still adds supporting part 202 in sealing strip 204, and supporting part 202 sets up with sealing part 201 side by side, and installs supporting part 202 in the one side that is close to reflow soldering stove 100 furnace, and supporting part 202 can enough undertake the pressure that sealing part 201 received, can isolate the erosion that comes from the inside heat of reflow soldering stove 100 and scaling powder for sealing part 201 again to the ageing of sealing strip 204 has been delayed greatly, has prolonged the life-span of sealing strip 204. It should be noted that the seal assembly 104 of the present application is used in the reflow oven 100. In other embodiments, the seal assembly 104 is also suitable for use in other furnaces or vessel components that require sealing.

While only certain features of the application have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the application.

Claims

1. A seal assembly (104) for mounting a seal between upper and lower hearths of a reflow oven (100), the seal assembly (104) comprising:

a support portion (202), the support portion (202) being elongated;

the sealing part (201), the sealing part (201) has elasticity, the sealing part (201) is consistent with the length direction of the supporting part (202), the sealing part (201) is positioned on one side of the supporting part (202) in the width direction, and is connected with the supporting part (202); and

a mounting seat (203), the support portion (202) and the seal portion (201) being detachably mounted on the mounting seat (203).

2. The seal assembly of claim 1, wherein:

the mounting seat (203) is mounted on a side mounting part (135) of the upper hearth (101) or the lower hearth (102) along the length direction.

3. The seal assembly of claim 2, wherein:

the side mounting part (135) is a platform extending outwards from the side of the upper hearth (101) or the lower hearth (102).

4. The seal assembly of claim 1, wherein:

the supporting portion (202) is a solid body.

5. The seal assembly of claim 1, wherein:

the supporting portion (202) and the sealing portion (201) are both made of an elastic material, and the mounting seat (203) is made of a metal material.

6. The seal assembly of claim 1, wherein:

the height of the sealing part (201) is greater than that of the supporting part (202).

7. The seal assembly of claim 1, wherein:

the bottom of the sealing part (201) and the bottom of the supporting part (202) are connected to form a base part (343).

8. The seal assembly of claim 7, wherein:

when the support portion (202) and the seal portion (201) are in a free state, a space is provided between an upper portion of the support portion (202) and an upper portion of the seal portion (201).

9. The seal assembly of claim 1, wherein:

the mounting seat (203) comprises a bottom plate (341) and two side plates (342), the length directions of the bottom plate (341) and the two side plates (342) are consistent, the two side plates (342) are respectively connected to two sides of the bottom plate (341) in the width direction, and the two side plates (342) are respectively inclined relative to each other, so that the two side plates (342) and the bottom plate (341) jointly form an accommodating space (345).

10. The seal assembly of claim 9, wherein:

the two sides of the base part (343) formed by the sealing part (201) and the supporting part (202) are respectively provided with an inward inclined plane (344), so that the base part (343) can be in snap fit with the accommodating space (345).

11. The seal assembly of claim 1, wherein:

the sealing part (201) has a structure with a hollow inner part, and any cross section of the sealing part (201) is annular.

12. The seal assembly of claim 1, wherein:

the top of sealing portion (201) is provided with a plurality of sand grip (301) at interval, every sand grip (301) in a plurality of sand grip (301) all extend along the length direction of sealing portion (201).

13. A reflow oven (100), characterized in that the reflow oven (100) comprises:

the upper hearth (101) comprises two opposite upper sides extending along the length direction of the upper hearth (101);

the lower hearth (102), the said lower hearth (102) includes two relative lower sides extending along length direction of the lower hearth (102);

a first seal assembly and a second seal assembly, wherein the first seal assembly or the second seal assembly is the seal assembly (104) of any one of the preceding claims, the first seal assembly and the second seal assembly each being mounted between the respective upper and lower sides along the length of the upper hearth (101).

14. The reflow oven of claim 13, wherein:

the mounting seat (203) of the first sealing assembly and the mounting seat (203) of the second sealing assembly are fixedly connected to two lower side edges of the lower hearth (102) respectively.

15. The reflow oven of claim 14, wherein:

the mounting seat (203) of the first sealing assembly and the mounting seat (203) of the second sealing assembly are fixed with two lower sides of the lower hearth (102) through screws or bolts.