Cavity assembly and vacuum reflow oven

Abstract

The utility model relates to a cavity assembly and a vacuum reflow oven, the cavity assembly comprises a lower shell, a supporting mechanism, a heating mechanism, a cooling mechanism and a bearing plate, the interior of the lower shell is an accommodating cavity; the supporting mechanism comprises two groups of supporting seats arranged in the accommodating cavity; the heating mechanism and the cooling mechanism are connected between the supporting seats; a plurality of first embedding grooves matched with the heating mechanisms and a plurality of second embedding grooves matched with the cooling mechanisms are formed in the bottom of the bearing plate, the first embedding grooves and the second embedding grooves are distributed in a staggered mode, and a partition part is formed between each first embedding groove and the corresponding adjacent second embedding groove. According to the cavity assembly provided by the utility model, heat and cooling quantity can be completely received by the bearing plate through arranging the baffle part in the bearing plate, mutual influence of the heating lamp tube and the cooling tube cannot be caused, and high-temperature deformation of the supporting seat can be effectively prevented through the special design of the supporting mechanism, so that good heating and cooling effects are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum welding, and specifically relates to a cavity component and a vacuum reflow furnace. Background Technique

[0002] A vacuum reflow furnace is a process welding furnace that can perform high-quality welding on products, ensuring that the welding materials work in a vacuum environment, a nitrogen environment, or a formic acid environment. At the same time, it can uniformly heat and cool the materials and the tube shell, avoiding cavitation and excessive oxidation, and has a good effect on improving the accuracy of the welding points and ensuring the accuracy of product performance.

[0003] The vacuum reflow furnace is usually provided with a heating system and a cooling system for heating or cooling the material carrier plate. The heating system and the cooling system are usually arranged alternately, and it is easy to generate interference between them, affecting the heating and cooling effects. At the same time, the high and low temperature changes are likely to cause deformation of the support structure or the cooling structure of the furnace body, thereby affecting the contact between the carrier plate and the heating system or the cooling system, and further affecting the heating effect or the cooling effect. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cavity component and a vacuum reflow furnace, which can at least solve one of the technical problems mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cavity component, including a lower shell, a support mechanism, a heating mechanism, a cooling mechanism, and a carrier plate. The inside of the lower shell is a receiving cavity. The support mechanism includes two groups of support seats arranged in the receiving cavity. The heating mechanism and the cooling mechanism are connected between the support seats. The bottom of the carrier plate is provided with a number of first embedding grooves matching the heating mechanism and a number of second embedding grooves matching the cooling mechanism. The first embedding grooves and the second embedding grooves are arranged in a staggered manner, and a partition portion is formed between adjacent first embedding grooves and second embedding grooves.

[0006] As a preferred solution, the heating mechanism includes heating lamp tubes arranged in the first embedding grooves, and the cooling mechanism includes cooling tubes arranged in the second embedding grooves. The heating lamp tubes and the cooling tubes are in contact with the carrier plate.

[0007] As a preferred solution, the cooling mechanism includes a connecting pipeline for connecting each cooling tube. The connecting pipeline is configured as a connecting channel arranged inside the support seat, and the connecting channel and the cooling tube cooperate to form a cooling path.

[0008] As a preferred solution, two sets of cooling passages are provided. The inlet ends of the two sets of cooling passages are respectively arranged at positions close to the middle of the two support seats. By providing the two sets of cooling passages, the overall cooling effect can be ensured, and the best cooling area can be located at the middle part of the carrier plate.

[0009] As a preferred solution, the cooling mechanism further includes a support rib plate connected between the two support seats. The support rib plate abuts against the lower part of the cooling pipe. By the high-fitting support of the support rib plate on the cooling pipe, the deformation of the cooling pipe can be prevented, the contact area between the cooling pipe and the carrier plate can be ensured, and the cooling effect can be ensured.

[0010] As a preferred solution, the top end of the support rib plate is set as an arc-shaped groove structure matching the bottom of the cooling pipe.

[0011] As a preferred solution, the support mechanism further includes at least three locking columns connected to the bottom ends of the support seats. The locking columns pass through the lower housing, and the locking columns are connected to the lower housing through locking members.

[0012] As a preferred solution, both the inlet end and the outlet end of the cooling mechanism are arranged through the locking columns, and the corresponding locking columns are provided with hollow through channels.

[0013] As a preferred solution, there is a gap between the bottom of the support seat and the lower housing, so as to prevent the heating lamp tube and the cooling pipe from directly contacting the bottom of the lower housing, thereby causing too fast heat dissipation or cold dissipation.

[0014] The present utility model further provides a technical solution of a vacuum reflow furnace, which includes the cavity assembly described in any of the above solutions.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1) Through the special design of the support seats and the locking columns in the support mechanism of the cavity assembly provided by the present utility model, and the cooperation with the lower housing, the support seats can be firmly connected to the lower housing, effectively preventing the support seats from deforming at high temperatures. At the same time, by opening the internal communication pipelines in the support seats, the support seats can communicate with each cooling pipe to form a cooling passage, saving space and being convenient for disassembly and assembly;

[0017] 2) Further, through the design of two sets of cooling passages with inlet in the middle and outlets at both ends, the cooling effect can be guaranteed; by providing the support rib plate at the bottom of the cooling pipe, the situation that the cooling pipe is bent and deformed due to high and low temperatures can be effectively prevented, further ensuring a good cooling effect;

[0018] 3) The partition part provided in the carrier plate can enable all the heat radiated by the heating lamp tube and the cooling amount of the cooling pipe to be received by the carrier plate, without causing mutual influence between the heating lamp tube and the cooling pipe, thereby improving the heating and cooling efficiency. Brief Description of the Drawings

[0019] Figure 1 This is a schematic diagram of the overall structure of the cavity assembly in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the carrier plate in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the support mechanism in an embodiment of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the support mechanism in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the cavity in an embodiment of the present utility model;

[0024] Figure 6 is Figure 5 the left view of;

[0025] Figure 7 is Figure 6 the cross-sectional view in the A-A direction;

[0026] The meanings of each label in the figure are as follows:

[0027] 1. Lower housing; 2. Carrier plate; 21. First embedding groove; 22. Second embedding groove; 23. Partition part; 3. Heating lamp tube; 4. Cooling pipe; 5. Support mechanism; 51. Support seat; 52. Locking column; 511. Installation hole; 512. Installation plate; 513. Installation blind hole; 514. Communication channel; 521. Inlet end; 522. Outlet end; 523. Threaded interface; 6. Support rib plate; 7. Locking part. Detailed Embodiment

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] See Figure 1 , this embodiment discloses a cavity assembly applied to a vacuum reflow furnace, including a lower housing 1. The inside of the lower housing 1 is a receiving cavity, and an upper housing (not shown in the figure) is connected through the lower housing 1. The lower housing 1 and the upper housing cooperate to form a sealed cavity of the vacuum reflow furnace.

[0031] Combined with Figure 5 , the vacuum reflow furnace cavity assembly further includes a carrier plate 2 disposed in the lower housing 1, and a heating mechanism and a cooling mechanism for heating and cooling the carrier plate 2 respectively. The carrier plate 2 is used to carry the product to be welded. The cavity assembly further includes a support mechanism 5 for supporting the carrier plate 2, the heating mechanism, and the cooling mechanism. The support mechanism 5 is used to fix the heating mechanism and the cooling mechanism, and the carrier plate 2 abuts on the heating mechanism and the cooling mechanism. The heating mechanism includes a plurality of heating tubes 3 abutting on the lower side of the carrier plate 2, and the cooling mechanism includes a plurality of cooling tubes 4 abutting on the lower side of the carrier plate 2. The heating tubes 3 and the cooling tubes 4 are both fixed by the support mechanism 5.

[0032] See Figure 2 , in this embodiment, a plurality of first embedding grooves 21 matching the heating tubes 3 and a plurality of second embedding grooves 22 matching the cooling tubes 4 are provided at the bottom of the carrier plate 2. The first embedding grooves 21 and the second embedding grooves 22 are parallel and are arranged in a staggered manner. A partition portion 23 is formed between adjacent first embedding grooves 21 and second embedding grooves 22, so that the first embedding grooves 21 and the second embedding grooves 22 form a semi-surrounding structure. It should be noted that in this embodiment, by providing the partition portion 23, the heat radiated by the heating tubes 3 and the cooling capacity of the cooling tubes 4 can all be received by the carrier plate 2, without causing mutual influence between the heating tubes 3 and the cooling tubes 4, thereby improving the heating and cooling efficiency. And through the setting of the semi-surrounding structure, it is convenient for the disassembly and assembly of the heating tubes 3 and the cooling tubes 4.

[0033] The carrier plate 2 can be made of materials with good heat conduction such as graphite and metal, and preferably graphite material with low expansibility and corrosion resistance.

[0034] Combined with Figure 3 、 Figure 4, to make the cooling pipes 4 communicate with each other to form a cooling passage, the cooling mechanism further includes connecting pipes provided at both ends of the cooling pipes 4 for connecting each cooling pipe 4. To save space and increase the cooling area, in this embodiment, the connecting pipes are integrally provided in the support mechanism 5, and are specifically arranged as follows: The support mechanism 5 includes two groups of support seats 51 respectively provided at both ends of the heating lamp tube 3 and the cooling pipe 4. The length of the support seat 51 matches that of the bearing plate 2, and the support seat 51 is fixedly connected to the lower housing 1. A plurality of mounting holes 511 matching the heating lamp tube 3 are provided at intervals along the length direction of the support seat 51. The heating lamp tube 3 passes through the mounting holes 511 and is fixed to the mounting seat by the mounting plate 512 and fasteners. When disassembly is required, the fasteners can be removed to take out the heating lamp tube 3, which is convenient for maintenance. Further, a plurality of mounting blind holes 513 communicating with the cooling pipe 4 are provided at intervals along the length direction of the support seat 51. A communication channel 514 communicating with the mounting blind holes 513 is formed inside the support seat 51. During installation, the cooling pipe 4 can be inserted into the mounting blind holes 513, and each cooling pipe 4 can be conducted through the communication channel 514 to form a cooling passage. See Figure 5 , threaded interfaces 523 communicating with the external cooling medium are respectively provided at the inlet end 521 and the outlet end 522 of the cooling passage.

[0035] In practical applications, the product to be welded is usually placed in the middle part of the bearing plate 2. The heating temperature of the heating mechanism usually reaches above 400°C. This temperature is extremely likely to cause the cooling water to vaporize before reaching the middle part of the bearing plate 2, making it difficult to achieve the cooling effect. Therefore, in this embodiment, the cooling passage is set to two groups, namely the first cooling passage and the second cooling passage, and the two cooling passages respectively control the cooling of half of the area of the bearing plate 2. Combined with Figure 5 , specifically, the inlet end 521 of the first cooling passage is arranged at a position close to the middle of a support seat 51 and communicates with the cooling pipe 4 at the corresponding position. This cooling passage flows from the middle position of the bearing plate 2 to the side end of the bearing plate 2, and its outlet end 522 is arranged at one end of the support seat 51; the inlet end 521 of the second cooling passage is arranged at a position close to the middle of the other support seat 51 and communicates with the cooling pipe 4 at the corresponding position. This cooling passage flows from the middle position of the bearing plate 2 to the other side end of the bearing plate 2. Through the setting of this cooling passage, the optimal cooling area is located in the middle part of the bearing plate 2. Compared with the setting of a single cooling passage, the cooling mechanism provided in this embodiment can enable the entire bearing plate 2 to have a better cooling effect. To improve the cooling speed, the cooling pipe 4 is usually made of a metal material, preferably stainless steel.

[0036] See Figure 6 and Figure 7, During the welding operation, long-term high and low temperature changes can easily cause the support base 51 and the cooling pipe 4 to deform. If the cooling pipe 4 is bent into an arc shape, the contact area between it and the bearing plate 2 will become smaller, thus affecting the cooling effect. To avoid the deformation of the cooling pipe 4, in this embodiment, the cooling mechanism further includes a support rib plate 6 abutted against the lower part of the cooling pipe 4. The two ends of the support rib plate 6 are respectively connected to the two support bases 51, and the top end of the support rib plate 6 is provided with an arc-shaped groove structure matching the bottom of the cooling pipe 4 to facilitate close fitting with the cooling pipe 4. The two ends of the support rib plate 6 can be detachably connected to the two support bases 51 by bolts or fixedly connected to the two support bases 51 by welding or other means. Through the high-fitting support of the support rib plate 6 for the cooling pipe 4, the deformation of the cooling pipe 4 can be prevented, ensuring the contact area between the cooling pipe 4 and the bearing plate 2 and ensuring the cooling effect.

[0037] If the support base 51 is deformed, it will cause poor contact between the heating lamp tube 3, the cooling pipe 4 and the bearing plate 2 connected to it, affecting both the heating effect and the cooling effect. Refer to Figure 3 , Figure 4 ,, In this embodiment, the support mechanism 5 further includes at least three groups of locking columns 52 connected to the bottom end of the support base 51. The locking columns 52 pass downward through the lower housing 1 and are fastened to the lower housing 1 by a locking member 7 such as a lock nut. The locking columns 52 and the support base 51 are preferably integrally formed to ensure the overall stability of the support mechanism 5. To keep the cavity in a sealed environment, the locking member 7 is connected to the lower housing 1 and the locking column 52 through a sealing ring. Preferably, to make further use of the space, in this embodiment, both the inlet end 521 and the outlet end 522 of the cooling passage are provided through the locking columns 52, that is, the locking columns 52 corresponding to the positions of the inlet end 521 and the outlet end 522 are each provided with a hollow through channel and are respectively communicated with the cooling pipe 4 at the corresponding positions. The locking columns 52 not corresponding to the positions of the inlet end 521 and the outlet end 522 can be set as solid. Through the cooperation of at least six groups of locking columns 52 and locking members 7 on both sides, the support base 51 can be firmly connected to the sturdy lower housing 1, effectively preventing the support base 51 from being distorted and deformed.

[0038] It should be noted that the locking column 52 has a predetermined height in the accommodation cavity of the lower housing 1, so that there is a gap between the support base 51 and the bottom of the lower housing 1. Such a setting can prevent the heating lamp tube 3 and the cooling pipe 4 from directly contacting the bottom of the lower housing 1, thus causing too fast heat dissipation or cold dissipation.

[0039] The cavity component provided in this embodiment can stably connect the support base 51 to the lower housing 1 through the special design of the support base 51 and the locking column 52 in the support mechanism 5, effectively preventing the support base 51 from deforming at high temperatures. At the same time, by opening the internal communication pipeline of the support base 51, it can communicate with each cooling pipe 4 to form a cooling path; and further through the design of two groups of cooling paths with inlet in the middle and outlets at both ends, the cooling effect can be ensured; through the setting of the support rib plate 6 at the bottom of the cooling pipe 4, the situation that the cooling pipe 4 is bent and deformed due to high and low temperatures can be effectively prevented, further ensuring a good cooling effect.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A cavity assembly, characterized in that: include, A lower shell (1), the interior of the lower shell (1) being a containing cavity; A support mechanism (5) comprising two groups of support seats (51) arranged in the accommodating cavity; A heating mechanism and a cooling mechanism connected between the support seats (51); A carrying plate (2), wherein a plurality of first embedding grooves (21) matching the heating mechanism and a plurality of second embedding grooves (22) matching the cooling mechanism are provided at the bottom of the carrying plate (2), wherein the first embedding grooves (21) and the second embedding grooves (22) are arranged in a staggered manner, and a barrier portion (23) is formed between adjacent first embedding grooves (21) and second embedding grooves (22).

2. The chamber assembly according to claim 1, characterized in that: The heating mechanism comprises a heating lamp tube (3) arranged in a first embedding groove (21), and the cooling mechanism comprises a cooling tube (4) arranged in a second embedding groove (22); the heating lamp tube (3) and the cooling tube (4) are in contact with the supporting plate (2).

3. The cavity assembly according to claim 2, characterized in that: The cooling mechanism comprises a connecting pipeline for connecting the cooling pipes (4), the connecting pipeline being configured as a connecting channel (514) arranged inside the support seat (51), and the connecting channel (514) and the cooling pipe (4) cooperate to form a cooling passage.

4. The cavity assembly according to claim 3, characterized in that: The cooling passages are arranged in two groups, and the inlet ends (521) of the two groups of cooling passages are respectively arranged at positions close to the middle of the two support seats (51).

5. The cavity assembly according to claim 2, characterized in that: The cooling mechanism also includes a supporting rib plate (6) connected between the two supporting seats (51), and the supporting rib plate (6) abuts against the bottom of the cooling pipe (4).

6. The cavity assembly according to claim 5, characterized in that: The top end of the supporting rib plate (6) is arranged as an arc-shaped groove structure matching the bottom end of the cooling pipe (4).

7. The chamber assembly according to claim 1, characterized in that: The support mechanism (5) further comprises at least three groups of locking columns (52) connected to the bottom end of the support seat (51); the locking columns (52) pass through the lower shell (1); and the locking columns (52) are connected to the lower shell (1) via locking members (7).

8. The chamber assembly according to claim 7, characterized in that: The inlet end (521) and the outlet end (522) of the cooling mechanism are both arranged through a locking column (52), and the corresponding locking column (52) is provided with a hollow through passage.

9. The chamber assembly according to claim 1, characterized in that: There is a gap between the support seat (51) and the bottom of the lower shell (1).

10. A vacuum reflow furnace, characterized in that: A cavity assembly comprising any one of claims 1-9.

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