CN214291279U - Quick cooling type vacuum welding furnace body - Google Patents
Quick cooling type vacuum welding furnace body Download PDFInfo
- Publication number
- CN214291279U CN214291279U CN202023186473.5U CN202023186473U CN214291279U CN 214291279 U CN214291279 U CN 214291279U CN 202023186473 U CN202023186473 U CN 202023186473U CN 214291279 U CN214291279 U CN 214291279U
- Authority
- CN
- China
- Prior art keywords
- heating chamber
- furnace cover
- furnace
- furnace body
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Tunnel Furnaces (AREA)
Abstract
The utility model discloses a rapid cooling type vacuum welding furnace body, which comprises a heating chamber, a furnace cover opening and closing device and a sealing device; the left end of the furnace cover is hinged with the top of the left side surface of the heating chamber through a first hinge longitudinal shaft, and a mouth-shaped sealing strip is arranged at the joint part of the furnace cover and the heating chamber; the cover opening and closing device comprises an uncovering cylinder arranged on the left side of the heating chamber, a hook cylinder arranged in the middle of the right end of the top surface of the cover and two locking cylinders arranged at the right end of the bottom surface of the heating chamber; the right end of the furnace cover is symmetrically provided with two upper hook devices along the hook cylinder, and the bottom end of the right side surface of the heating chamber is provided with a fifth hinge longitudinal shaft; two lower hook devices are symmetrically arranged at the right end of the furnace cover along the hook cylinder; and a plurality of heating chamber cooling channels are arranged on each side wall of the heating chamber, and a plurality of furnace cover cooling channels are arranged on the furnace cover. The vacuum welding furnace body of the utility model has the characteristics of reliable vacuum performance and easy maintenance.
Description
Technical Field
The utility model relates to a semiconductor welding equipment belongs to vacuum welding technical field.
Background
Under the rapid development environment of modern integrated circuits and electronic technologies, semiconductor products are more and more widely applied, and with the improvement of the fine requirements on the quality of semiconductor products, especially semiconductor metal packaging devices and semiconductor ceramic packaging devices, the traditional reflow soldering process, the soldering quality and the void ratio can not meet the quality requirements of the semiconductor products.
At present, the traditional vacuum reflow oven heats the circuit board by utilizing the hot air generated by filaments in the heating box and the hot air circulation mode, the heating tube heats the air of the heating box in the heating box, and then the fan conveys the hot air into the oven cavity of the reflow oven. In order to make the air outlet of the heating box uniform, the air outlet of the heating box is provided with a metal rectifying plate, and the rectifying plate is provided with a plurality of uniformly distributed small holes for guiding the hot air. The welding process of the circuit board on the conveying belt is that the circuit board heats the solder paste on the circuit board under the action of hot air, the soldering flux promotes the solder paste to melt, and finally the temperature of the circuit board is reduced under the action of the cooling fan, the solder paste is solidified, and the welding process is completed. In the welding mode of hot air heating, the heating of the circuit board is transferred and heated from the surface to the inner surface, so that the tin paste on the circuit board is easy to generate bubbles in the heating process, the phenomenon of false soldering due to cold soldering occurs in the welding process, the product quality is seriously influenced, and according to incomplete statistics, the defective products generated in the mode of bubbles account for about 50 percent of all the defective products. Secondly, because the efficiency of heat transfer by hot air is low, especially the heat absorption capacity of the flexible circuit board provided with the tool fixture is very large, the circuit board is not heated sufficiently due to the low-efficiency heating mode, the local temperature is higher, and the like, so that poor welding phenomena such as circuit board deformation and the like occur, and the product quality is seriously influenced; thirdly, the rectifying plate does not generate heat, the surface temperature does not reach the gasification temperature required by the soldering flux, so that the soldering flux is easy to adhere and condense on the rectifying plate, and the maintenance and the cleaning are quite difficult. On the other hand, the cavity door of the vacuum reflow oven has a complex structure, the weight is more than 20KG, and if the vacuum reflow oven is manually opened and closed, a common female operator is difficult to independently complete, and automatic integration cannot be realized. Most of the temperature control modes of the vacuum reflow oven adopt the integration of temperature sensing element inserted temperature control and heating plate, and the heating plate is inconvenient to disassemble and customize. The vacuum reflow soldering apparatus has several problems: 1. the hot air reflow furnace is used as a heating device, so that the problems of poor welding such as cold solder and circuit board deformation caused by poor welding due to the fact that the heating speed is low, the highest heating temperature is low, and the circuit board is heated unevenly to generate bubbles in solder paste; 2. the surface temperature of the rectifying plate is low, so that the adhesion and condensation of soldering flux are easily caused, and the maintenance and cleaning are difficult; 3. the infrared welding technology adopted in the prior art has the problems that although the heat source is convenient to control, the photosensitive points are shielded, the heating effect is influenced by the different qualities of elements and PCBs, the temperature difference is large and the like; 4. the screw thread of the cavity cover is easy to cause secondary pollution after long-term use, the granularity is reduced, and the common screw-thread door lock device is made of thin material, is easy to deform due to external impact and cannot be used, and has poor durability; 5. in the prior art, the temperature control mode adopts a heating plate insertion type, and the disassembly is inconvenient. 6. In the welding process of the furnace body made of metal, due to frequent cooling and heating, the bottom of the furnace body and the side wall of the furnace body are required to be thicker, otherwise small cracks which are not easy to find are easy to appear between the bottom of the furnace body and the side wall of the furnace body, and the welding quality is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a quick cooling formula vacuum welding stove furnace body to prior art not enough, its characteristics that have the vacuum performance reliable, easily maintain.
The utility model adopts the technical proposal as follows.
A furnace body of a rapid cooling type vacuum welding furnace comprises a heating chamber with an upward opening, a furnace cover capable of sealing the top of the heating chamber, a furnace cover opening and closing device and a sealing device; the left end of the furnace cover is hinged with the top of the left side surface of the heating chamber through a first hinge longitudinal shaft, and a mouth-shaped sealing strip is arranged at the joint part of the furnace cover and the heating chamber; the heating chamber and the furnace cover are both made of metal materials.
The furnace cover opening and closing device comprises an uncovering cylinder arranged on the left side of the heating chamber, a hook cylinder arranged in the middle of the right end of the top surface of the furnace cover, and two locking cylinders arranged at the right end of the bottom surface of the heating chamber; the surfaces of the output shaft of the uncovering cylinder, the output shaft of the hook cylinder and the output shaft of the locking cylinder are all perpendicular to the first hinge longitudinal axis; the left end of the top surface of the furnace cover is provided with an ear plate, and the top end of the uncovering cylinder is hinged with the ear plate through a third hinge longitudinal shaft.
Two upper hook devices are symmetrically arranged at the right end of the furnace cover along the hook cylinder, each upper hook device comprises a fourth hinge longitudinal shaft and an upper rotating plate sleeved on the fourth hinge longitudinal shaft, and a hook with a left opening is arranged at the bottom of the upper rotating plate; the top ends of the two upper rotating plates are connected through a vertical pushing rod; the top vertical rod is hinged with the upper end of the hook cylinder.
The bottom end of the right side surface of the heating chamber is provided with a fifth hinged longitudinal shaft; two lower hook devices are symmetrically arranged at the right end of the furnace cover along the hook cylinder; each lower hook device comprises a fifth hinged longitudinal shaft and two lower rotating plates sleeved on the fifth hinged longitudinal shaft, and the top of each lower rotating plate is provided with a hanging rod; the bottom end of each lower rotating plate is hinged with a locking cylinder; when the furnace cover is attached to the heating chamber, the rotation of the two upper rotating plates is controlled by the cover opening cylinder, and the rotation of the two lower rotating plates is controlled by the two locking cylinders, so that the hanging rods of the lower rotating plates can enter the hooks of the upper rotating plates above the lower rotating plates.
The heating chamber is provided with a vacuum-pumping pipe which is connected with a vacuum-pumping device arranged outside the furnace body.
The heating chamber is provided with a nitrogen inlet and outlet pipe which is connected with a nitrogen pumping device arranged outside the furnace body.
The heating chamber is provided with a reducing gas inlet which is communicated with a reducing gas storage tank arranged outside the furnace body;
and a plurality of heating chamber cooling channels are arranged on each side wall of the heating chamber, a plurality of furnace cover cooling channels are arranged on the furnace cover, and the inlet and the outlet of each heating chamber cooling channel and each furnace cover cooling channel are respectively connected with a cooling liquid pumping device and a cooling liquid box which are arranged outside the furnace body through pipelines.
The cooling channels of the heating chambers and the cooling channel of the furnace cover are spiral channels. And water hammer eliminators are arranged on pipelines among the cooling channels of the heating chambers, the cooling channels of the furnace cover and the cooling liquid pumping device arranged outside the furnace body.
As an optimal technical scheme, the top of each lower rotating plate is provided with a hanging rod movable hole, the hanging rod movable hole is provided with a hanging rod, and the hanging rod can move up and down in the hanging rod movable hole.
As the preferred technical scheme, the lower rotary plate comprises a lower toothed plate and an upper toothed plate which are fixedly connected; the top end of the upper toothed plate is provided with a hanging rod mounting rack, the hanging rod mounting rack comprises a bottom surface plate and two vertical plates, and the two vertical plates are symmetrically arranged along the upper rotating plate closest to the bottom surface plate; each vertical plate is provided with a hanging rod movable hole, and two ends of the hanging rod are respectively positioned in the hanging rod movable holes of the two vertical plates.
As preferred technical scheme, each lower toothed plate is articulated with the right end of a locking cylinder through a second articulated longitudinal axis.
As a preferred technical scheme, the lower end of the hook cylinder is hinged with the furnace cover through a seventh hinge longitudinal shaft;
as the preferred technical scheme, the top surface of the furnace body is provided with a sealing strip mounting groove for mounting a sealing strip.
Preferably, the left end of the heating chamber is provided with a first hinged longitudinal shaft bracket, and the first hinged longitudinal shaft is arranged on the first hinged longitudinal shaft bracket.
The utility model has the advantages that: the furnace cover opening and closing device comprises an uncovering cylinder arranged on the left side of the heating chamber, a hook cylinder arranged in the middle of the right end of the top surface of the furnace cover, and two locking cylinders arranged at the right end of the bottom surface of the heating chamber; the cover opening cylinder, the hook cylinder and the two locking cylinders are matched with each other, the top of the lower rotating plate is provided with a hanging rod moving hole, and when the hanging rod is hung in the hook of the upper rotating plate, the hanging rod is hung reliably and the sealing effect is good. Set up two locking cylinders and along couple cylinder symmetric distribution, the sealed effectual and small that account for and open and the device usefulness in right side of furnace. The heating chamber and the furnace cover are made of split metal, and the pressure can be borne by the furnace cover. The joint portion of bell and heating chamber is equipped with the sealing strip of "mouth" style of calligraphy, be equipped with a plurality of heating chamber cooling channel on each lateral wall of heating chamber, the bell is equipped with a plurality of bell cooling channel, each heating chamber cooling channel, bell cooling channel's import and export respectively through pipeline and the coolant liquid pumping installations of setting outside the furnace body, the coolant liquid case, can be for the sealing strip cooling, the life of sealing strip has been increased, the service environment of sealing strip has been optimized, after using for a period, sealed validity can only be realized through changing the sealing strip, the reliability of sealed effect has been ensured. The cooling channel of the heating chamber and the cooling channel of the furnace cover are spiral channels and are provided with the water hammer eliminator, so that the flowing cooling effect of the cooling liquid can be effectively improved.
Drawings
Fig. 1 is a schematic perspective view of the vacuum welding furnace body of the present invention.
Fig. 2 is a partially enlarged view of a portion a of fig. 1.
Fig. 3 is a partially enlarged view of a portion B of fig. 1.
Fig. 4 is a partially enlarged view of a portion C of fig. 1.
Fig. 5 is a partially enlarged view of a portion D of fig. 4.
Fig. 6 is a partially enlarged view of a portion E of fig. 4.
Fig. 7 is a plan view of the vacuum welding furnace body shown in fig. 1.
Fig. 8 is a left side view of the furnace body of the vacuum welding furnace shown in fig. 1.
Fig. 9 is a right side view of the vacuum welding furnace body shown in fig. 1.
Fig. 10 is a partially enlarged view of a portion F of fig. 9.
Fig. 11 is a schematic view of the vacuum welding furnace body shown in fig. 1 when the furnace lid is opened.
Fig. 12 is a partially enlarged view of a portion G of fig. 11.
Fig. 13 is a partially enlarged view of a portion H of fig. 11.
Fig. 14 is a partially enlarged view of a portion I of fig. 11.
Wherein: a reducing gas inlet 1;
a hearth-21; a sealing strip-22; a furnace cover-23; a first longitudinal axis of articulation-24;
a cylinder-31 for opening the cover; a hook cylinder-32; a locking cylinder-33; an ear plate-34; a third hinge longitudinal axis-35; an upper hook device-36; a fourth longitudinal axis of articulation-37; an upper rotating plate-38; top longitudinal rod-310; lower hook means-311; lower hook means-311; a fifth longitudinal axis of articulation-312; a lower rotating plate-313; a hanging rod-314; hanging rod movable hole-315; a seventh longitudinal axis of articulation-316; a sixth longitudinal axis of articulation-317; a second longitudinal axis of articulation-318; a lower toothed plate-319; an upper toothed plate-320; a hanging rod mounting rack-321; a vertical plate-322; a bottom panel-323;
a heating chamber cooling passage 4;
vacuum tube-5; a nitrogen inlet and outlet pipe-6; a heat insulation column-7;
a furnace lid cooling channel-8;
a first articulated longitudinal axis support-9.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1. As shown in fig. 1-14. A furnace body of a rapid cooling type vacuum welding furnace comprises a heating chamber 21 with an upward opening, a furnace cover 23 capable of sealing the top of the heating chamber 21, a furnace cover opening and closing device and a sealing device; the left end of the furnace cover 23 is hinged with the top of the left side surface of the heating chamber 21 through a first hinge longitudinal shaft 24, and a sealing strip 22 in a shape like a Chinese character 'kou' is arranged at the joint part of the furnace cover 23 and the heating chamber 21; the heating chamber 21 and the furnace cover 23 are made of metal materials.
The furnace cover opening and closing device comprises an uncovering cylinder 31 arranged on the left side of the heating chamber 21, a hook cylinder 32 arranged in the middle of the right end of the top surface of the furnace cover 23, and two locking cylinders 33 arranged on the right end of the bottom surface of the heating chamber 21; the surfaces of the output shaft of the uncovering cylinder 31, the output shaft of the hook cylinder 32 and the output shaft of the locking cylinder 33 are all perpendicular to the first hinge longitudinal shaft 24; the left end of the top surface of the furnace cover 23 is provided with an ear plate 34, and the top end of the cover-opening cylinder 31 is hinged with the ear plate 34 through a third hinge longitudinal axis 35.
Two upper hook devices 36 are symmetrically arranged at the right end of the furnace cover 23 along the hook cylinder 32, each upper hook device 36 comprises a fourth hinge longitudinal shaft 37 and an upper rotating plate 38 sleeved on the fourth hinge longitudinal shaft 37, and a hook 39 with a leftward opening is arranged at the bottom of the upper rotating plate 38; the top ends of the two upper rotating plates 38 are connected through a top vertical rod 310; the top vertical rod 310 is hinged with the upper end of the hook cylinder 32.
The bottom end of the right side of the heating chamber 21 is provided with a fifth hinge longitudinal shaft 312; two lower hook devices 311 are symmetrically arranged at the right end of the furnace cover 23 along the hook cylinder 32; each lower hook device 311 comprises a fifth hinging longitudinal shaft 312 and two lower rotating plates 313 sleeved on the fifth hinging longitudinal shaft 312, and the top of each lower rotating plate 313 is provided with a hanging rod 314; the bottom end of each lower rotating plate 313 is hinged with a locking cylinder 33; when the furnace cover 23 is jointed with the heating chamber 21, the two upper rotating plates 38 are controlled to rotate by the cover opening air cylinder 31, and the two lower rotating plates 313 are controlled to rotate by the two locking air cylinders 33, so that the hanging rods 314 of the lower rotating plates 313 can enter the hooks 39 of the upper rotating plates 38 above the lower rotating plates;
the heating chamber 21 is provided with a vacuum-pumping tube 5, and the vacuum-pumping tube 5 is connected with a vacuum-pumping device arranged outside the furnace body.
The heating chamber 21 is provided with a nitrogen inlet and outlet pipe 6, and the nitrogen inlet and outlet pipe 6 is connected with a nitrogen pumping device arranged outside the furnace body.
The heating chamber 21 is provided with a reducing gas inlet 1, and the reducing gas inlet 1 is communicated with a reducing gas storage tank arranged outside the furnace body 2.
A plurality of heating chamber cooling channels 4 are arranged on each side wall of the heating chamber 21, a plurality of furnace cover cooling channels 8 are arranged on the furnace cover, and inlets and outlets of the heating chamber cooling channels 4 and the furnace cover cooling channels 8 are respectively connected with a cooling liquid pumping device and a cooling liquid box which are arranged outside the furnace body through pipelines. The cooling channels of the heating chambers and the cooling channel of the furnace cover are spiral channels. And water hammer eliminators are arranged on pipelines among the cooling channels of the heating chambers, the cooling channels of the furnace cover and the cooling liquid pumping device arranged outside the furnace body.
The top of each lower rotating plate 313 is provided with a hanging rod movable hole 315, the hanging rod movable hole 315 is provided with a hanging rod 314, and the hanging rod 314 can move up and down in the hanging rod movable hole 315.
The lower rotating plate 313 comprises a lower toothed plate 319 and an upper toothed plate 320 which are fixedly connected; the top end of the upper toothed plate 320 is provided with a hanging rod mounting rack 321, the hanging rod mounting rack 321 comprises a bottom surface plate 323 and two vertical plates 322, and the two vertical plates 322 are symmetrically arranged along the upper rotating plate closest to the two vertical plates; hanging rod movable holes 315 are formed in each vertical plate 322, and two ends of each hanging rod 314 are respectively located in the hanging rod movable holes 315 of the two vertical plates 322.
Each lower toothed plate 319 is hinged to the right end of a locking cylinder 33 by a second longitudinal hinge axis 318. The locking cylinder 33 is mounted on the bottom surface of the heating chamber 21 by a sixth hinge longitudinal axis 317.
The lower end of the hook cylinder 32 is hinged to the furnace lid 23 via a seventh hinge longitudinal axis 316.
The top surface of the furnace body 2 is provided with a sealing strip mounting groove for mounting the sealing strip 22.
The left end of the heating chamber 21 is provided with a first articulated longitudinal shaft support 9, and a first articulated longitudinal shaft 24 is mounted on the first articulated longitudinal shaft support 9.
The above-mentioned embodiments are only for understanding the present invention, and are not intended to limit the technical solutions of the present invention, and those skilled in the relevant art can make various changes or modifications based on the technical solutions described in the claims, and all equivalent changes or modifications should be covered by the scope of the claims of the present invention. The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (7)
1. The utility model provides a quick cooling formula vacuum welding stove furnace body which characterized in that: the furnace body comprises a heating chamber with an upward opening, a furnace cover capable of sealing the top of the heating chamber, a furnace cover opening and closing device and a sealing device; the left end of the furnace cover is hinged with the top of the left side surface of the heating chamber through a first hinge longitudinal shaft, and a mouth-shaped sealing strip is arranged at the joint part of the furnace cover and the heating chamber; the heating chamber and the furnace cover are made of metal materials;
the furnace cover opening and closing device comprises an uncovering cylinder arranged on the left side of the heating chamber, a hook cylinder arranged in the middle of the right end of the top surface of the furnace cover, and two locking cylinders arranged at the right end of the bottom surface of the heating chamber; the surfaces of the output shaft of the uncovering cylinder, the output shaft of the hook cylinder and the output shaft of the locking cylinder are all perpendicular to the first hinge longitudinal axis; the left end of the top surface of the furnace cover is provided with an ear plate, and the top end of the uncovering cylinder is hinged with the ear plate through a third hinge longitudinal shaft;
two upper hook devices are symmetrically arranged at the right end of the furnace cover along the hook cylinder, each upper hook device comprises a fourth hinge longitudinal shaft and an upper rotating plate sleeved on the fourth hinge longitudinal shaft, and a hook with a left opening is arranged at the bottom of the upper rotating plate; the top ends of the two upper rotating plates are connected through a vertical pushing rod; the top longitudinal rod is hinged with the upper end of the hook cylinder;
the bottom end of the right side surface of the heating chamber is provided with a fifth hinged longitudinal shaft; two lower hook devices are symmetrically arranged at the right end of the furnace cover along the hook cylinder; each lower hook device comprises a fifth hinged longitudinal shaft and two lower rotating plates sleeved on the fifth hinged longitudinal shaft, and the top of each lower rotating plate is provided with a hanging rod; the bottom end of each lower rotating plate is hinged with a locking cylinder; when the furnace cover is attached to the heating chamber, the rotation of the two upper rotating plates is controlled by the cover opening cylinder, and the rotation of the two lower rotating plates is controlled by the two locking cylinders, so that the hanging rods of the lower rotating plates can enter the hooks of the upper rotating plates above the lower rotating plates;
the heating chamber is provided with a vacuumizing pipe which is connected with a vacuumizing device arranged outside the furnace body;
the heating chamber is provided with a nitrogen inlet and outlet pipe which is connected with a nitrogen pumping device arranged outside the furnace body;
the heating chamber is provided with a reducing gas inlet which is communicated with a reducing gas storage tank arranged outside the furnace body;
a plurality of heating chamber cooling channels are arranged on each side wall of the heating chamber, a plurality of furnace cover cooling channels are arranged on the furnace cover, and the inlet and the outlet of each heating chamber cooling channel and each furnace cover cooling channel are respectively connected with a cooling liquid pumping device and a cooling liquid box which are arranged outside the furnace body through pipelines;
each heating chamber cooling channel and each furnace cover cooling channel are spiral channels;
and water hammer eliminators are arranged on pipelines among the cooling channels of the heating chambers, the cooling channels of the furnace cover and the cooling liquid pumping device arranged outside the furnace body.
2. The rapid cooling type vacuum welding furnace body of claim 1, wherein: the top of each lower rotating plate is provided with a hanging rod movable hole, the hanging rod movable hole is provided with a hanging rod, and the hanging rod can move up and down in the hanging rod movable hole.
3. The furnace body of the rapid cooling type vacuum welding furnace according to claim 2, characterized in that: the lower rotary plate comprises a lower toothed plate and an upper toothed plate which are fixedly connected; the top end of the upper toothed plate is provided with a hanging rod mounting rack, the hanging rod mounting rack comprises a bottom surface plate and two vertical plates, and the two vertical plates are symmetrically arranged along the upper rotating plate closest to the bottom surface plate; each vertical plate is provided with a hanging rod movable hole, and two ends of the hanging rod are respectively positioned in the hanging rod movable holes of the two vertical plates.
4. The rapid cooling type vacuum welding furnace body of claim 1, wherein: each lower toothed plate is hinged with the right end of a locking cylinder through a second hinge longitudinal shaft.
5. The rapid cooling type vacuum welding furnace body of claim 1, wherein: the lower end of the hook cylinder is hinged with the furnace cover through a seventh hinge longitudinal shaft.
6. The rapid cooling type vacuum welding furnace body of claim 1, wherein: the top surface of the furnace body is provided with a sealing strip mounting groove for mounting a sealing strip.
7. The rapid cooling type vacuum welding furnace body of claim 1, wherein: the left end of the heating chamber is provided with a first articulated longitudinal shaft bracket on which the first articulated longitudinal shaft is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023186473.5U CN214291279U (en) | 2020-12-26 | 2020-12-26 | Quick cooling type vacuum welding furnace body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023186473.5U CN214291279U (en) | 2020-12-26 | 2020-12-26 | Quick cooling type vacuum welding furnace body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214291279U true CN214291279U (en) | 2021-09-28 |
Family
ID=77861508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023186473.5U Active CN214291279U (en) | 2020-12-26 | 2020-12-26 | Quick cooling type vacuum welding furnace body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214291279U (en) |
-
2020
- 2020-12-26 CN CN202023186473.5U patent/CN214291279U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112475523A (en) | Vacuum welding furnace capable of realizing rapid welding of semiconductor products | |
| CN214291272U (en) | Split type vacuum welding furnace body | |
| CN214291279U (en) | Quick cooling type vacuum welding furnace body | |
| CN206905531U (en) | Efficient energy-saving heat-preservation stove and aluminium alloy casting device | |
| CN214291271U (en) | Vacuum welding furnace capable of realizing rapid welding of semiconductor products | |
| CN214291274U (en) | Vacuum welding furnace body capable of realizing rapid welding of semiconductor products | |
| CN214291273U (en) | Split type vacuum welding furnace | |
| CN214291281U (en) | Non-contact vacuum welding furnace | |
| CN214291280U (en) | Rapid cooling type vacuum welding furnace | |
| CN206604493U (en) | A kind of paint reactor of rapid condensation | |
| CN217197415U (en) | Drying treatment device of printing machine | |
| CN214640857U (en) | Furnace cover opening and closing device of vacuum welding furnace | |
| CN209540925U (en) | A kind of fuel gas hot-blast stove for superfine powder | |
| CN209026848U (en) | A kind of air preheater being evenly heated convenient for deashing | |
| CN211284141U (en) | Electric heating tin melting furnace of glass production line | |
| CN221107466U (en) | Preparation facilities of ultrapure nitride powder | |
| CN208250397U (en) | A kind of hot galvanizing water bath heating system | |
| CN221740206U (en) | Temperature-resistant energy-saving water jacket structure | |
| CN219810042U (en) | Sleeve type air electric heater | |
| CN212179422U (en) | PCB drying device | |
| CN219231432U (en) | Heat exchange reboiler capable of preventing air leakage | |
| CN205002564U (en) | Electroplate material and take oven | |
| CN219010155U (en) | Edge sealing device of tin liquid cooler for float glass production | |
| CN206005030U (en) | SMT double applying piece mixing reflow soldering structure | |
| CN206005029U (en) | A kind of SMT counter-current welding equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |