Heating cavity for off-line gas phase welding

Abstract

The utility model provides a heating cavity for off-line gas phase welding. The heating cavity for off-line gas phase welding comprises a placing frame, a cavity body, a cavity cover and a lifting mechanism, the top of the cavity is open, the bottom of the cavity cover is open and corresponds to the cavity, and the placing frame is connected to the bottom of the cavity cover in a sliding mode; and the lifting mechanism is used for driving the cavity cover to execute a lifting action so as to be far away from or close to the cavity. The placing frame moving along with the cavity cover is used for containing workpieces, operation is easy and convenient, the workpieces can be rapidly taken and placed when the cavity cover is lifted, and the workpiece feeding and discharging efficiency is improved; when the workpieces are manually taken and placed, the workpieces do not need to stretch into the cavity, the operation risk is reduced, and the feeding and discharging operation safety is guaranteed; and meanwhile, the workpiece is located in the upper space in the heating cavity through the arrangement of the containing frame, the workpiece is prevented from making direct contact with high-temperature gas-phase liquid at the bottom of the cavity or liquefied gas-phase liquid obtained after heat absorption and condensation, the phenomenon that the workpiece is heated unevenly in the welding process is effectively prevented, and the welding quality of the workpiece is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas phase welding, more specifically to a heating cavity for offline gas phase welding. BACKGROUND

[0002] Gas phase welding is a kind of technology that uses high-temperature gas generated by gas phase liquid evaporation to heat and weld workpieces, which is widely used in the fields of aerospace, automobile manufacturing, electronic packaging, etc.Gas phase welding is usually divided into offline and online types, and the offline type means that the workpiece is not directly on the continuous production line during the welding process, but is loaded and unloaded outside the heating cavity, which is convenient for checking the quality of the workpiece before and after welding.

[0003] The existing heating cavity for offline gas phase welding usually places the workpiece placing rack in the cavity, so that the workpiece is easy to directly contact or be too close to the heating plate and gas phase liquid during the welding process, resulting in uneven heating of the workpiece and local overheating phenomenon, which affects the welding quality of the workpiece; and when loading and unloading the workpiece, the workpiece needs to be manually placed into the cavity with frequent temperature rising and falling, which increases the risk of operation and is easy to collide with the parts in the cavity, affecting the normal operation of the heating cavity. SUMMARY

[0004] The utility model aims at overcoming the defects of the prior art and providing a heating cavity for offline gas phase welding to solve the technical problem of easy contact between the workpiece and the gas phase liquid in the existing heating cavity for offline gas phase welding.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A heating cavity for offline gas phase welding, comprising a placing rack, a cavity, a cavity cover and a lifting mechanism; the cavity is open at the top, the cavity cover is open at the bottom and corresponds to the cavity, and the placing rack is slidingly connected to the bottom of the cavity cover; the lifting mechanism is used to drive the cavity cover to perform lifting action to move away from or approach the cavity.

[0007] The cavity cover comprises:

[0008] A cover plate, the lifting mechanism is connected to the cover plate;

[0009] Two connecting racks, the two connecting racks are arranged parallel to each other and fixedly connected to the bottom of the cover plate;

[0010] Two guide plates, the two guide plates are fixedly connected to one side of the two connecting racks close to each other; one side of the two guide plates close to each other is provided with a guide groove, and the placing rack is slidingly connected to the guide groove.

[0011] The guide plate comprises a guide plate body and a limiting part; the guide plate body is connected to the connecting frame, and the limiting part is formed by inwardly bending the top and bottom of the guide plate body; the guide plate body and the limiting part form the guide groove.

[0012] The placing frame comprises:

[0013] Two side plates are arranged in parallel with the connecting frame, and each of the two side plates is provided with a sliding rail on the side away from the other side plate; the sliding rail is slidingly connected to the guide groove.

[0014] Two support plates are arranged in parallel with each other, and the support plates are arranged perpendicularly to the side plates; the two ends of the support plates are connected to the two side plates; the two side plates and the two support plates form a horizontal frame.

[0015] A plurality of support rods are connected to the horizontal frame at both ends, and gaps exist between the support rods.

[0016] The sliding rail comprises a sliding rail body and an arc-shaped part; the arc-shaped part is formed by outwardly bending the top and bottom of the sliding rail body, and the curvature of the arc-shaped part corresponds to the limiting part; the sliding rail and the guide groove are provided with a plurality of balls.

[0017] The placing frame further comprises a handle; the handle is fixedly connected to the side of the support plate away from the support rod.

[0018] The heating cavity for offline gas phase welding further comprises:

[0019] A cooling pipe is connected to the cover plate; the air outlet end of the cooling pipe extends between the horizontal frame and the cover plate.

[0020] An air outlet pipe is fixedly connected to the outer wall of the cavity; the air inlet end of the air outlet pipe corresponds to the cavity cover.

[0021] The heating cavity for offline gas phase welding further comprises a plurality of heating plates; the heating plates are arranged around the outer wall of the cavity and are fixedly connected to the cavity.

[0022] The heating cavity for offline gas phase welding further comprises a plurality of heat insulation plates; the heat insulation plates are fixedly connected to the outer wall of the cavity; the heating plates are located between the heat insulation plates and the cavity.

[0023] The heating cavity for offline gas phase welding further comprises:

[0024] The infusion tube is fixedly connected to the cavity, and the infusion tube extends into the cavity;

[0025] The recovery pipe is fixedly connected to the bottom of the cavity and extends from the cavity to the side of the cavity away from the cavity cover.

[0026] The utility model discloses compared with prior art has the beneficial effects that: the utility model discloses the placing rack of following cavity cover moves and contains work piece, and the operation is simple, and it is favorable to take and put work piece when the cavity cover promotes, improves the efficiency of work piece feeding and discharging, when manual work piece is taken and put, need not stretch into the cavity, reduced the operation risk, also avoided the component in the cavity in the process of feeding and discharging to collide, guaranteeed the feeding and discharging operation safety, simultaneously, the setting of placing rack makes work piece be located in the upper space of heating cavity interior, the steam transmission heat is convenient, and the work piece avoids direct contact high temperature gas phase liquid of cavity bottom, also avoided the work piece contact gas phase liquid after heat absorption condenses and liquefies, effectively prevented the phenomenon of uneven heating of work piece in the welding process, reduced the work piece's defective rate, further guarantee the welding quality of work piece.

[0027] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, can be implemented according to the content of the specification, and in order to let the above and other purposes, characteristics and advantages of the utility model can be more obvious and easy to understand, the following preferred embodiments are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The utility model provides a kind of overall structure schematic diagram of heating cavity for offline gas phase welding;

[0029] Figure 2 The utility model provides the structure schematic diagram of cavity cover for heating cavity for offline gas phase welding;

[0030] Figure 3 For Figure 2 The enlarged structure schematic diagram of A of the place;

[0031] Figure 4 The structure schematic diagram of placing rack for heating cavity for offline gas phase welding is provided in the utility model;

[0032] Figure 5 The structure schematic diagram of cavity for heating cavity for offline gas phase welding is provided in the utility model;

[0033] Figure 6 The upper view structure schematic diagram of heating cavity for heating cavity for offline gas phase welding is provided in the utility model;

[0034] Figure 7 As Figure 6 The cross-sectional structure schematic view at B-B of figure 1;

[0035] Figure 8 The cavity body is provided with a cavity body of a heating cavity for offline gas phase welding.

[0036] Reference signs:

[0037] 31, rack; 311, side plate; 312, support plate; 313, support rod; 314, slide rail; 3141, slide rail body; 3142, arc-shaped part; 315, handle; 32, cavity; 33, cavity cover; 331, cover plate; 332, connecting frame; 3321, horizontal plate; 3322, vertical plate; 333, guide plate; 3331, guide plate body; 3332, limiting part; 334, guide groove; 34, lifting mechanism; 35, cooling pipe; 36, heating plate; 37, air outlet pipe; 38, recovery pipe; 39, heat insulation plate; 51, infusion pipe; 511, through hole. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in combination with the drawings and specific embodiments. The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0039] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0040] It should also be understood that the terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the specification and the appended claims of the utility model, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0041] It should be further understood that the term "and / or" used in the specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0042] Referring to Figures 1-8 As shown in the drawings, the embodiment discloses a heating cavity for offline vapor phase welding, which comprises a placing rack 31, a cavity 32, a cavity cover 33 and a lifting mechanism 34; the cavity 32 is open at the top, the cavity cover 33 is open at the bottom and is arranged correspondingly to the cavity 32, and the placing rack 31 is slidingly connected to the bottom of the cavity cover 33; the lifting mechanism 34 is used to drive the cavity cover 33 to perform lifting action to move away from or close to the cavity 32.

[0043] The heating cavity for offline vapor phase welding of the embodiment contains workpieces by the placing rack 31 moving with the cavity cover 33, which is easy to operate and facilitates quick taking and placing of workpieces when the cavity cover 33 is lifted, thereby improving the efficiency of workpiece feeding and discharging; when manually taking and placing workpieces, the operator does not need to stretch into the cavity 32, thereby reducing the operation risk and avoiding collision with components in the cavity 32 during feeding and discharging, thus ensuring the safety of feeding and discharging operation; at the same time, the placing rack 31 is arranged to make the workpieces located in the space above the heating cavity, which facilitates steam heat transfer and avoids direct contact of the workpieces with high-temperature vapor phase liquid at the bottom of the cavity 32 and contact of the workpieces with vapor phase liquid liquefied after heat absorption and condensation, effectively preventing uneven heating of the workpieces during welding, reducing the workpiece rejection rate and further ensuring the welding quality of the workpieces.

[0044] Specifically, the cavity cover 33 comprises:

[0045] a cover plate 331, to which the lifting mechanism 34 is connected;

[0046] two connecting racks 332, which are arranged in parallel to each other and fixedly connected to the bottom of the cover plate 331;

[0047] two guide plates 333, which are fixedly connected to the side of each of the two connecting racks 332 close to each other; each of the two guide plates 333 close to each other is provided with a guide groove 334, and the placing rack 31 is slidingly connected to the guide groove 334.

[0048] The connecting rack 332 provides a workpiece placing space between the placing rack 31 and the cover plate 331, and the workpiece is placed between the placing rack 31, the cover plate 331 and the connecting rack 332. The guide groove 334 facilitates smooth movement of the placing rack 31 and limits the movement direction and range of the placing rack 31, thereby ensuring smooth movement of the placing rack 31 during lifting of the cover plate 331 and sliding of the placing rack 31.

[0049] Specifically, the guide plate 333 comprises a guide plate body 3331 and a limiting portion 3332; the guide plate body 3331 is connected to the connecting frame 332, and the limiting portion 3332 is bent inward from the top and bottom of the guide plate body 3331; the guide plate body 3331 and the limiting portion 3332 form the guide groove 334. The vertical section of the guide plate 333 is in the shape of a "C", and the limiting portion 3332 is arranged to form the guide groove 334 structure on the guide plate 333, and the placing frame 31 can be embedded in the guide groove 334, so that the placing frame 31 is not easy to be separated from the guide plate 333 during sliding.

[0050] Specifically, the connecting frame 332 comprises a horizontal plate 3321 and at least one vertical plate 3322; one end of the vertical plate 3322 is fixedly connected to the cover plate 331, the other end is fixedly connected to the horizontal plate 3321, the guide plate 333 is fixedly connected to the horizontal plate 3321, and the horizontal length of the vertical plate 3322 is less than that of the horizontal plate 3321. The vertical height of the vertical plate 3322 is the vertical height of the workpiece placing space, and the vertical plate 3322 is arranged in multiple and is spaced from each other, which helps to improve the ventilation effect of the workpiece placing space, and further improve the heating and cooling effects of the workpiece, thereby ensuring the quality of the workpiece.

[0051] Specifically, the placing frame 31 comprises:

[0052] Two side plates 311, which are arranged in parallel with the connecting frame 332, and each side of the two side plates 311 away from each other is provided with a sliding rail 314 which is slidingly connected to the guide groove 334;

[0053] Two support plates 312, which are arranged in parallel with each other and perpendicularly to the side plates 311, and the two ends of the support plate 312 are connected to the two side plates 311; the two side plates 311 and the two support plates 312 form a horizontal frame;

[0054] A plurality of support rods 313, the two ends of which are connected to the horizontal frame, and there is a gap between the plurality of support rods 313.

[0055] The support rods 313 are arranged at intervals, which not only ensures the stable support of the workpiece, but also increases the ventilation space at the bottom of the workpiece, so that the blockage around the workpiece is small, which is beneficial to realize the uniform heating of the workpiece, ensures the heating and cooling efficiency of the workpiece, and to a certain extent, saves the consumption of resources and improves the utilization rate of gas phase liquid.

[0056] Specifically, the placing frame 31 further comprises a handle 315; the handle 315 is fixedly connected to the support plate 312. The handle 315 facilitates manual pulling out of the placing frame 31 for workpiece loading and unloading operation.

[0057] Specifically, the slide rail 314 comprises a slide rail body 3141 and an arc-shaped portion 3142; the arc-shaped portion 3142 is bent outward from the top and bottom of the slide rail body 3141, and the curvature of the arc-shaped portion 3142 corresponds to the position of the limiting portion 3332; and the slide rail 314 and the guide groove 334 are further provided with a ball. The arc-shaped portion 3142 enhances the stability of the guide rail and effectively prevents the slide rail 314 from deviating; and the ball reduces the friction between the slide rail 314 and the guide groove 334, thereby improving the smoothness of the movement of the placing rack 31.

[0058] Specifically, the heating cavity for offline gas phase welding further comprises a cooling pipe 35 connected to the cover plate 331, and the air outlet end of the cooling pipe 35 extends between the horizontal frame and the cover plate 331. The cooling pipe 35 is used to deliver cold air into the workpiece placing space to cool the workpiece. The cooling pipe 35 is connected to the cover plate 331, and the air outlet end is arranged opposite to the placing rack 31, which reduces the transmission distance of the cold air, so that the cold air directly acts on the workpiece, greatly improving the cooling efficiency of the workpiece, thereby shortening the overall welding time and improving the resource utilization rate, and ensuring the economic benefits of the heating cavity for offline gas phase welding.

[0059] Specifically, the heating cavity for offline gas phase welding further comprises an air outlet pipe 37 fixedly connected to the outer wall of the cavity 32, and the air inlet end of the air outlet pipe 37 is arranged opposite to the cavity cover 33. The air outlet pipe 37 is used to absorb the air of the cooling pipe 35, which facilitates to improve the cold air flow speed in the heating cavity and realize air circulation, thereby improving the resource utilization rate.

[0060] Specifically, the heating cavity for offline gas phase welding further comprises a plurality of heating plates 36 arranged around the outer wall of the cavity 32 and fixedly connected to the cavity 32. The heating plates 36 are arranged on the side wall and the bottom wall of the cavity 32, which ensures uniform distribution of temperature in the heating cavity, improves the heating efficiency, realizes efficient heating of the workpiece, and improves the welding quality and production efficiency.

[0061] Specifically, the heating cavity for offline gas phase welding further comprises a liquid delivery pipe 51 fixedly connected to the cavity 32, and the end of the liquid delivery pipe 51 extends into the cavity 32; and a plurality of through holes 511 are arranged at the end of the liquid delivery pipe 51. The through holes 511 facilitate the vaporization of the gas phase liquid and the entry of the gas phase liquid into the inside of the heating cavity 30 after evaporation, which helps the gas phase liquid after evaporation to move to the workpiece for heating the workpiece. The gas phase liquid is heated in the liquid delivery pipe 51, so that the gas phase liquid occupies and moves in a limited space, which is beneficial to rapid heating of the gas phase liquid and to improvement of the kinetic energy of the evaporated gas phase liquid, thereby improving the heating efficiency of the workpiece.

[0062] Specifically, the heating cavity for off-line vapor phase welding further comprises a recovery pipe 38 fixedly connected to the bottom of the cavity 32 and extending from inside the cavity 32 to a side of the cavity 32 away from the cavity cover 33. The recovery pipe 38 is used to guide the vapor phase liquid to leave the heating cavity, which helps to realize the recycling of the vapor phase liquid.

[0063] Specifically, the heating cavity for off-line vapor phase welding further comprises a plurality of heat insulation plates 39 fixedly connected to the outer wall of the cavity 32, and the heating plate 36 is located between the heat insulation plates 39 and the cavity 32. The heat insulation plates 39 avoid the influence of external structures on the heating plate 36, guarantee the structural stability and safety of the heating cavity for off-line vapor phase welding, and at the same time, the heat insulation plates 39 can effectively insulate heat loss, improve energy utilization efficiency, and ensure the smooth progress of the welding process and guarantee the welding efficiency.

[0064] The heating cavity for off-line vapor phase welding of the embodiment uses the placement rack moving with the cavity cover to accommodate the workpiece, which is simple to operate and facilitates quick taking and placing of the workpiece when the cavity cover is lifted, thereby improving the efficiency of workpiece feeding and discharging. When the workpiece is manually taken and placed, it is not necessary to stretch into the cavity, which reduces the operation risk and avoids collision with the components in the cavity during the feeding and discharging process, thereby guaranteeing the safety of the feeding and discharging operation. At the same time, the placement of the placement rack makes the workpiece located above the space inside the heating cavity, which facilitates the transmission of steam heat and avoids direct contact of the workpiece with the high-temperature vapor phase liquid at the bottom of the cavity and contact of the workpiece with the vapor phase liquid liquefied after condensation due to heat absorption, effectively preventing the uneven heating of the workpiece during the welding process, reducing the workpiece rejection rate, and further guaranteeing the welding quality of the workpiece.

[0065] The above only further illustrates the technical content of the present application by way of examples, so as to make it easier for the reader to understand, but does not represent that the embodiments of the present application are limited to this. Any technical extension or re-creation made according to the present application is also protected by the present application. The protection scope of the present application is subject to the claims.

Claims

1. A heating chamber for off-line vapor phase soldering, characterized in that The utility model provides a kind of placing rack, cavity, cavity cover and lifting mechanism. The cavity top is opened, the cavity cover bottom is opened and is arranged corresponding to the cavity, and the placing rack is slidably connected to the bottom of the cavity cover. The lifting mechanism is used to drive the cavity cover to perform lifting action to move away from or close to the cavity. The placing rack includes two side plates, two support plates and a plurality of support rods.

2. The heating chamber for off-line vapor phase soldering according to claim 1, characterized in that The two side plates are arranged in parallel and slidably connected to the cavity cover. The two support plates are arranged in parallel, and the support plates are arranged perpendicularly to the side plates. The two side plates and the two support plates form a horizontal frame. The cavity cover includes a cover plate, two connecting frames, two guide plates and a lifting mechanism.

3. The heating chamber for off-line vapor phase soldering according to claim 2, characterized in that The lifting mechanism is connected to the cover plate.

4. The heating chamber for off-line vapor phase soldering according to claim 3, characterized in that The two connecting frames are arranged in parallel and fixedly connected to the bottom of the cover plate.

5. The heating chamber for off-line vapor phase soldering according to claim 4, characterized in that The two guide plates are fixedly connected to the side of the two connecting frames close to each other.

6. The heating chamber for off-line vapor phase soldering according to claim 5, characterized in that The side of the two guide plates close to each other is provided with a guide groove, and the placing rack is slidably connected to the guide groove.

7. The heating chamber for off-line vapor phase soldering according to claim 6, characterized in that The guide plate includes a guide plate body and a limiting portion. The guide plate body is connected to the connecting frame, and the limiting portion is bent inward from the top and bottom of the guide plate body. The guide plate body and the limiting portion form the guide groove.

8. The heating chamber for off-line vapor phase soldering according to claim 7, characterized in that The side of the two side plates away from each other is provided with a sliding rail, and the sliding rail is slidably connected to the guide groove. The sliding rail includes a sliding rail body and an arc-shaped portion.

9. The heating chamber for off-line vapor phase soldering according to claim 8, characterized in that The arc-shaped portion is bent outward from the top and bottom of the sliding rail body, and the curvature of the arc-shaped portion corresponds to the limiting portion. The sliding rail and the guide groove are provided with a plurality of rolling balls.

10. The heating chamber for off-line vapor phase soldering according to claim 9, characterized in that The placing rack further includes a handle. The handle is fixedly connected to the side of the support plate away from the support rod. The utility model also provides a cooling pipe, an air outlet pipe, a plurality of heating plates, a plurality of heat insulation plates, a liquid delivery pipe and a recovery pipe. The cooling pipe is connected to the cover plate, and the air outlet end of the cooling pipe extends between the horizontal frame and the cover plate. The air outlet pipe is fixedly connected to the outer wall of the cavity, and the air inlet end of the air outlet pipe corresponds to the cavity cover. The plurality of heating plates are arranged around the outer wall of the cavity and fixedly connected to the cavity. The plurality of heat insulation plates are fixedly connected to the outer wall of the cavity, and the heating plates are located between the heat insulation plates and the cavity. The liquid delivery pipe is fixedly connected to the cavity, and the end of the liquid delivery pipe extends into the cavity. The end of the liquid delivery pipe is provided with a plurality of through holes. The recovery pipe is fixedly connected to the bottom of the cavity and extends from the cavity to the side of the cavity away from the cavity cover.

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