Static Vacuum Welding Furnace

Abstract

The present invention relates to a static vacuum welding furnace, which belongs to the technical field of vacuum welding furnaces. It is characterized in that a plurality of welding chambers are arranged side by side at intervals, a cover opening and closing device for opening and closing the welding chambers is connected to the welding chambers, a supply and discharge device (2) is provided on one side of the welding chambers, a conveying device (3) is provided between the supply and discharge device (2) and each welding chamber, a heating device and a cooling device are connected to each welding chamber, a workpiece pushing device and a workpiece extruding device are provided on both sides of the workpiece positioning device, respectively, and a space for arranging a cassette is provided between the workpiece extruding device and the workpiece positioning device. The static vacuum welding furnace of the present invention can weld a plurality of workpieces at the same time, has a high welding speed, and the workpiece pushing device can push the workpieces in the cassette one by one into the workpiece positioning device, and the workpieces after welding can be pushed into the cassette, so that the pushing and pushing of the workpieces into the box can be performed automatically, and has a high degree of automation and a high operating speed.

Description

[Technical field]

[0001] The present invention relates to a static vacuum welding furnace and belongs to the technical field of vacuum welding furnaces. [Background technology]

[0002] Vacuum welding furnaces (vacuum eutectic furnaces) are used to weld products with high quality in a vacuum environment. A reducing system (N2, formic acid, N2H2, H2) is introduced during the heating or cooling process to protect the product and solder from oxidation, while reacting with the oxides on the surface of the product and solder, improving the quality of the weld surface and reducing the void rate of the weld.

[0003] Conventional vacuum welding furnaces are generally of two types. One is a continuous vacuum welding furnace, which welds the workpieces by moving the workpieces to be welded through a heating station, a welding station, and a cooling station in that order. However, such a vacuum welding furnace has the following problems during use. 1) The equipment is too long, occupying a large space, making it difficult to meet the space requirements of customers. 2) During the workpiece transport process, the two parts of the workpieces to be welded tend to move relative to each other, resulting in the two parts of the workpieces to be welded being unable to be accurately aligned, resulting in a low yield of welded workpieces. The other is a fixed vacuum welding furnace, which welds the workpieces by putting the workpieces into a welding furnace, heating them to a predetermined temperature in the welding furnace, and then vacuuming the welding furnace. Such a vacuum welding furnace has the following problems during use. The temperature of the workpieces during welding is high, and after welding is completed, the workpieces need to be cooled to a predetermined temperature before opening the welding furnace to avoid oxidation of the workpieces due to contact with air, but the temperature of the welding furnace is high and the cooling speed of the workpieces is slow, so the welding speed is very low.

[0004] Therefore, it is difficult for the conventional vacuum welding furnace to achieve both a good welding speed and a good yield of the workpieces after welding, and the conventional stationary welding furnace has a low degree of automation. Summary of the Invention [Problem to be solved by the invention]

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and provide a static vacuum welding furnace that can automate the feeding and discharging of material pieces, achieve a high yield of workpieces after welding, and have a high welding speed. [Means for solving the problem]

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: A static vacuum welding furnace, comprising a supply and discharge device, a transport device, a welding chamber, and a lid opening and closing device, a plurality of welding chambers are arranged side by side at intervals, the welding chambers are connected to the lid opening and closing device for opening and closing the welding chambers, a supply and discharge device is provided on one side of the welding chambers, a transport device is provided between the supply and discharge device and each welding chamber, and a heating device and a cooling device are connected to each welding chamber; The supply and discharge device includes a material piece pushing device, a material piece extruding device, and a material piece positioning device, and is characterized in that the material piece pushing device and the material piece extruding device are provided on each side of the material piece positioning device, and a space is provided between the material piece extruding device and the material piece positioning device for positioning a cassette.

[0007] Preferably, the material piece extruding device includes a material piece extruding plate, an extruding buffer device, and a material piece extruding power device, the material piece extruding plate is connected to the material piece extruding power device, the material piece extruding plate moves along a direction approaching or moving away from the material piece positioning device, and the extruding buffer device is provided between the material piece extruding plate and the material piece extruding power device. The material piece extruding power device pushes and moves the material piece extruding plate to extrude the material pieces in the cassette through the material piece extruding plate, and the extruding buffer device has a buffering effect, which can send the material pieces to a predetermined position and avoid damage to the material pieces.

[0008] Preferably, the extrusion buffering device includes a material piece extrusion spring, the material piece extrusion plate and the material piece extrusion power device are relatively slidable along a direction parallel to the moving direction of the material piece extrusion plate, and the material piece extrusion spring is provided between the material piece extrusion power device and the material piece extrusion plate. The material piece extrusion power device pushes and moves the material piece extrusion plate by the material piece extrusion spring, thereby pushing the material piece extrusion plate and enabling relative movement between the material piece extrusion power device and the material piece extrusion plate to realize buffering.

[0009] Preferably, the workpiece positioning device includes an upwardly opening workpiece positioning groove, which positions the workpiece to facilitate the conveying device to accurately suck up the workpiece, and ensures that the workpiece and the cassette are aligned when the welded workpiece is pushed into the cassette.

[0010] Preferably, the supply and discharge device further includes a cassette supply device, a cassette jacking device, a cassette holder, and a cassette push-out device, the cassette jacking device is disposed in the space, the cassette push-out device and the cassette holder are disposed on both sides of the cassette jacking device, respectively, and the cassette push-out device is disposed opposite the cassette holder, the cassette supply device is disposed on one side of the cassette jacking device, and the cassette supply device and the cassette holder are disposed at a distance in the vertical direction. The cassette supply device can send a cassette filled with material pieces to the cassette jacking device, the cassette jacking device drives the cassette to move it opposite the material piece push-out device to facilitate pushing out the material pieces to be welded and pushing in the material pieces after welding, and the cassette push-out device can push the cassette into the cassette holder, thereby realizing automation of the input and recovery of material pieces.

[0011] Preferably, the cassette jacking device includes a cassette jacking power unit, a jacking frame, and a crimping device, the cassette jacking power unit is connected to the jacking frame to raise and lower the jacking frame, a cassette support unit is provided at the bottom of the jacking frame, the crimping device is attached to the top of the jacking frame, and the crimping device is provided directly opposite the cassette support unit. The crimping device can crimp the cassette to the cassette support unit to make the cassette more stable during movement.

[0012] Preferably, the feeding and discharging device further includes an adjustment device, which is attached to the cassette jacking power device and connected to the jacking frame, and the adjustment direction is the same as the extrusion direction of the cassette extrusion device. The adjustment device can adjust the position of the jacking frame so that the cassette in the jacking frame is directly opposite to the workpiece positioning device.

[0013] Preferably, the cassette extrusion device includes a cassette plunger and a cassette extrusion power device, a plurality of cassette plungers are arranged in parallel, the cassette extrusion power device is connected to each of the cassette plungers, and each cassette plunger moves synchronously toward or away from the cassette holder. The cassette extrusion power device pushes and moves the cassette by the cassette plunger, and supplies the cassette to the cassette holder, thereby enabling the material pieces to be continuously fed out.

[0014] Preferably, the plurality of sets of welding chambers are arranged in parallel with a space therebetween, each set of welding chambers includes two welding chambers spaced apart vertically, and each set of welding chambers is connected with a cover opening / closing device. The number of welding chambers may be increased or decreased according to customer needs, so as to meet the requirements of welding speed, due to the welding chambers and cover opening / closing devices being installed as modules.

[0015] Preferably, each of the lid opening and closing devices includes a first lid opening and closing device and a second lid opening and closing device, the first lid opening and closing device and the second lid opening and closing device are respectively connected to two welding chambers of the same set, and the second lid opening and closing device is attached to the first lid opening and closing device. The first lid opening and closing device and the second lid opening and closing device can open and close the covers of the two welding chambers of the same set, respectively, and the control is more flexible. Effect of the Invention

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the static vacuum welding furnace of the present invention, the conveying device can send the workpieces to be welded in the workpiece positioning device into each welding chamber one by one, and can also send the welded workpieces from inside the welding chamber to the workpiece positioning device, each welding chamber can operate separately and multiple workpieces can be welded at the same time; the cooling device can cool the welding chamber and quickly cool the welded workpieces to a predetermined temperature, and can speed up the welding speed of the workpieces; since the heating, welding and cooling of the workpieces are performed in the same welding chamber, the workpieces do not move during the entire process, thereby ensuring a good conductive effect between the welded workpieces and the core piece; the workpiece pushing device can push the workpieces in the cassette one by one into the workpiece positioning device, and can also push the welded workpieces into the cassette, thereby realizing the automation of the extrusion of the workpieces and loading them into the cassette, with a high degree of automation, a fast operating speed and a high yield of welded workpieces. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic three-dimensional view of a static vacuum welding furnace. [Diagram 2] FIG. 2 is a schematic rear view of a static vacuum welding furnace. [Diagram 3] FIG. [Figure 4] FIG. 4 is a partial enlarged view of part A in FIG. [Diagram 5] FIG. 13 is a schematic three-dimensional view of the supply and discharge device from another viewing angle. [Figure 6] FIG. 6 is a partial enlarged view of part B in FIG. [Figure 7] FIG. 6 is a partial enlarged view of part C in FIG. [Figure 8] FIG. 6 is a partial enlarged view of part D in FIG. 5. [Figure 9] FIG. [Figure 10] FIG. 10 is a partially enlarged view of a portion E in FIG. [Figure 11] FIG. 2 is a schematic three-dimensional view of a welding chamber base. [Figure 12] FIG. 2 is a schematic front cross-sectional view of a welding chamber base. [Figure 13] FIG. [Figure 14] FIG. 2 is a schematic three-dimensional view of a top cover of the welding chamber. [Figure 15] FIG. [Figure 16] FIG. 2 is a schematic left side view of the cover opening and closing device. [Figure 17] FIG. 2 is a schematic three-dimensional view of a condensation unit. [Explanation of symbols]

[0019] 1 Stand 2 Supply and discharge device 3. Conveyor 4 Circulating Water Tank 5 Lid opening and closing device 6 Condensing Unit 7 Filtration Unit 8 Welding chamber top cover 801 Air Intake 9 Welding chamber base 10 Condenser 11 Lower Pallet 12 Conveyor timing belt 13 Material piece extrusion plate 14 Platen 15 Material piece push plate 16 Material piece push rack 17 Material piece positioning groove 18 Cassette plunger 19 Jacking Frame 20 Material piece pushing timing belt 21 Material piece compression spring 22 Material piece pushing guide rail 23 Upper Pallet 24 Conveyor motor 25 Cassette Push Cylinder 26 Cassette Jacking Motor 27 Cassette jacking screw 28 Adjustment cylinder 29 Adjustable Rack 30 Jacking Base 31 Cassette crimping cylinder 32 Cassette Push Rack 33 Material piece extrusion timing belt 34 Material piece extrusion rack 35 Material Single Extrusion Spring 36 Translation guide rail 37 Translation rack 38 Pillar 39 Lifting rack 40 Extendable Rack 41 Nozzle 42 Elastic timing belt 43 Telescopic drive motor 44 Insulation Cover 45 Support plate 4501 Outer plate 4502 Inner plate 4503 Air supply groove 46 Base body 47 Heating tube 48 Air supply pipe 49 First lid opening and closing cylinder 50 First Lid Opening Rack 51 Second cover opening / closing guide rail 52 Second lid opening and closing rack 53 Mounting base 54 First cover opening / closing guide rail 55 Bottom Cooling Channel 56 Second cover opening and closing cylinder 57 Separation tube 58 Collection Bottle DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention will be further described below with reference to specific embodiments, but the detailed description given herein with reference to the drawings is merely for the purpose of better explanation, and the structure of the present invention is not limited to these limited embodiments, and those skilled in the art will understand that some equivalent alternatives or general means are included in the protection scope of the present application, although they are no longer described in detail in this specification.

[0021] 1 to 17 show the best embodiment of the present invention, and the present invention will be further described below with reference to FIGS. 1 to 17. FIG.

[0022] The static vacuum welding furnace includes a supply and discharge device 2, a conveying device 3, a welding chamber, and a lid opening and closing device 5, and multiple welding chambers are arranged side by side with spaces between them, a lid opening and closing device for opening and closing the welding chamber is connected to the welding chamber, a supply and discharge device 2 is provided on one side of the welding chamber, a conveying device 3 is provided between the supply and discharge device 2 and each welding chamber, a heating device and a cooling device are connected to each welding chamber, the supply and discharge device 2 includes a material piece pushing device, a material piece extruding device, and a material piece positioning device, and the material piece pushing device and the material piece extruding device are provided on each side of the material piece positioning device, and a space is provided between the material piece extruding device and the material piece positioning device for placing a cassette. In this static vacuum welding furnace, the conveying device can send the workpieces to be welded in the workpiece positioning device one by one into each welding chamber, and can also send the welded workpieces from inside the welding chamber to the workpiece positioning device, each welding chamber can operate independently and weld multiple workpieces simultaneously, and the cooling device can cool the welding chamber and quickly cool the welded workpieces to a predetermined temperature, so as to increase the welding speed of the workpieces. The workpiece pushing device can push the workpieces in the cassette one by one into the workpiece positioning device, and can also push the welded workpieces into the cassette, thereby realizing the automation of the extrusion of the workpieces and the loading into the cassette, with a high degree of automation, a fast operating speed, and a high yield of welded workpieces.

[0023] Specifically, as shown in Figures 1 and 2, the static vacuum welding furnace further includes a stand 1, the welding chamber is attached to the stand 1, and multiple sets of welding chambers are arranged side by side with a gap between them, each set of welding chambers includes two welding chambers arranged side by side with a gap between them, and in this embodiment, three sets of welding chambers are arranged side by side with a gap between them, and a lid opening and closing device 5 is connected to each set of welding chambers.

[0024] Each welding chamber includes a welding chamber base 9 and a welding chamber top cover 8. The welding chamber top cover 8 is coupled to the upper side of the welding chamber base 9 to seal the top of the welding chamber base 9, and a welding cavity is formed between the welding chamber base 9 and the welding chamber top cover 8. The lid opening and closing device 5 is connected to the welding chamber top cover 8 and opens and closes the welding chamber top cover 8 by raising and lowering the welding chamber top cover 8. The heating device includes a lower heating device provided in the welding chamber base 9 and an upper heating device provided in the welding chamber top cover 8.

[0025] The supply and discharge device 2 is provided on one side of the welding chamber, the supply and discharge device 2 is attached to the stand 1, the conveying device 3 is also attached to the stand 1, the conveying device 3 is provided between the supply and discharge device 2 and the welding chamber, and the conveying device 3 sends the material pieces to be welded in the supply and discharge device 2 one by one into each welding chamber, and returns the material pieces after welding in each welding chamber one by one into the supply and discharge device 2.

[0026] The cooling device includes a condenser 10, a cooling pump, a circulating water tank 4, and a lower cooling channel 55 and an upper cooling channel provided in the welding chamber, and an upper cooling channel and a lower cooling channel 55 are provided in each welding chamber, and the outlet of the lower cooling channel 55 of each welding chamber is connected to the inlet of the upper cooling channel. In this embodiment, the condenser 10 corresponds to the welding chamber one-to-one, and there is only one cooling pump and circulating water tank 4. The condenser 10, the circulating water tank 4, and the cooling pump are all mounted on the stand 1, and the condenser 10 is arranged in parallel on the upper side of the circulating water tank 4, and the outlets of the upper cooling channels of each welding chamber are all connected to the tube inlets of the corresponding condensers 10, and the tube outlets of each condenser 10 are all connected to the top of the circulating water tank 4. The inlet of the cooling pump is connected to the lower or bottom of the circulating water tank 4, and the outlet of the cooling pump is also connected to the inlet of the lower cooling channel 55 of each welding chamber, and the shell of each condenser 10 is connected to the circulating cooling water.

[0027] When cooling the welding chamber, the circulating water is vaporized because the temperature of the welding chamber is high, and the vaporized circulating water vapor enters the condenser 10 and is condensed before returning to the circulating water tank 4, thus realizing water recycling.

[0028] The cooling device further includes a balance pipe and a drain pipe, the outlet of the upper cooling channel of each welding chamber is connected to both the inlet of the drain pipe and the inlet of the balance pipe, the outlet of the balance pipe is connected to the circulating water tank 4, and the outlet of the drain pipe is connected to the tube inlet of the condenser 10. Shutoff valves are provided both between the inlet of the balance pipe and the outlet of the upper cooling channel, and between the inlet of the drain pipe and the outlet of the upper cooling channel, and also between the outlet of the cooling pump and the inlet of each lower cooling channel 55.

[0029] When cooling the welding chamber, the shutoff valve between the inlet of the balance tube and the outlet of the upper cooling channel is closed, the shutoff valve between the cooling pump and the inlet of the lower cooling channel 55 is opened, and the shutoff valve between the inlet of the drain tube and the outlet of the upper cooling channel is opened. In this way, the cooling pump causes the circulating water in the circulating water tank 4 to pass through the lower cooling channel 55, the upper cooling channel, and the drain tube in sequence, enter the tube of the condenser 10, and be condensed into the circulating water tank 4.

[0030] When the welding chamber is heated, some of the circulating water remains in the upper cooling channel and the lower cooling channel 55. In this case, the shutoff valve between the cooling pump and the inlet of the lower cooling channel 55 is closed, the shutoff valve between the inlet of the drain pipe and the outlet of the upper cooling channel is closed, and the shutoff valve between the inlet of the balance tube and the outlet of the upper cooling channel is opened. During the heating process, the circulating water in the upper cooling channel and the lower cooling channel 55 is liquefied and enters the circulating water tank 4 through the balance tube. Since the amount of such water is small, the steam that directly enters the circulating water tank 4 comes into contact with the water in the circulating water tank 4 and condenses.

[0031] The cooling device does not include the circulating water tank 4, the condenser 10, and the cooling pump, and the circulating water may be directly introduced into the upper cooling channel and the lower cooling channel 55. The cooling device may be a semiconductor cooling device as it is.

[0032] The vacuum extraction device includes a condensation unit 6, a filtering unit 7, and a vacuum pump, the inlet of which is connected to the outlet of the condensation unit 6, and the inlet of the condensation unit 6 is also connected to the welding cavity of each welding chamber. The filtering unit 7 is provided between the outlet of the condensation unit 6 and the inlet of the vacuum pump, and a plurality of filtering units 7 are connected in series, and in this embodiment, three filtering units 7 are connected in series. A conventional filter may be used as the filtering unit 7, but the structure of the filtering unit 7 will not be described in detail here.

[0033] 3 to 5, the supply and discharge device 2 includes a material piece pushing device, a material piece extruding device, and a material piece positioning device, the material piece pushing device and the material piece extruding device are provided on both sides of the material piece positioning device, the cassette supply device and the cassette extruding device have the same height, and a space for arranging a cassette is provided between the material piece extruding device and the material piece positioning device. The pushing direction of the material piece pushing device is parallel to the extruding direction of the material piece extruding device.

[0034] The supply and discharge device 2 further includes a cassette supply device, a cassette jacking device, a cassette holder, and a cassette extrusion device, the cassette jacking device is provided in the space between the material piece extrusion device and the material piece positioning device, the cassette extrusion device and the cassette holder are provided on both sides of the cassette jacking device, respectively, and the cassette extrusion device and the cassette holder are provided directly opposite each other, the cassette supply device is provided on one side of the cassette jacking device, and the cassette supply device and the cassette holder are provided spaced apart in the vertical direction, and the cassette supply device is provided directly below the cassette holder. The extrusion direction of the cassette extrusion device is perpendicular to the extrusion direction of the material piece extrusion device.

[0035] The cassette supply device includes a lower pallet 11 and a supply power unit provided on the lower pallet 11, the supply power unit including a conveyor motor 24 and a conveyor timing belt 12, conveyor timing belt pulleys are rotatably attached to both ends of the lower pallet 11, each end of the conveyor timing belt 12 meshes with the conveyor timing belt pulley on the corresponding side, the output shaft of the conveyor motor 24 is connected to one of the conveyor timing belt pulleys, and the conveyor timing belt 12 is provided with a top portion that protrudes upward from the lower pallet 11, so that the cassettes on the lower pallet 11 are transported via the conveyor timing belt 12.

[0036] Two conveyor timing belts 12 are arranged side by side with a gap between them, and the conveyor timing belt pulleys of the two conveyor timing belts 12 are connected by a synchronous shaft, so that the two conveyor timing belts 12 move synchronously and have the same moving speed. The two conveyor timing belts 12 transport the cassettes by holding both ends of the cassettes, which makes the transportation of the cassettes more stable.

[0037] In this embodiment, the cassette holder is the upper pallet 23, which is provided above the lower pallet 11 with a gap therebetween, and the upper pallet 23 and the lower pallet 11 are provided directly opposite each other. A cassette containing the material pieces to be welded is sent to the cassette jacking device via the space between the upper pallet 23 and the lower pallet 11, and the cassette filled with the material pieces after welding is pushed into the upper pallet 23 by the cassette extrusion device, thereby achieving continuous supply and discharge of the material pieces.

[0038] In order to more stably transport the cassettes on the upper pallet 23, two limiting plates are provided side by side at a distance from each other on the upper side of the upper pallet 23, and a channel for guiding the cassettes is formed in the upper pallet 23 between the two limiting plates.

[0039] The cassette is a rectangular box open at both ends, and both opposing ends of the cassette are open. The inner walls on both opposing sides of the cassette are provided with outwardly convex loading portions, with the loading portions on both sides in a one-to-one correspondence. Both sides of the material piece are placed on the loading portions on both sides, and the material piece extruding device and the material piece pushing device each handle the material pieces from both ends of the cassette.

[0040] The material piece pushing device and the material piece extruding device are provided on opposite sides of the upper pallet 23, respectively, and the material piece pushing device and the material piece extruding device are provided directly opposite each other.

[0041] The material piece positioning device includes a material piece positioning groove 17 attached to the upper pallet 23, the material piece positioning groove 17 opening upward, the material piece pushing device and the material piece positioning groove 17 being provided on the same side of the upper pallet 23, and the material piece extruding device being provided on the other side of the upper pallet 23.

[0042] The material piece pushing device includes a material piece pushing power device, a material piece pushing plate 15, and a pushing buffer device, the material piece pushing plate 15 is slidably arranged in the material piece positioning groove 17, the material piece pushing device is attached to the material piece positioning groove 17, and the material piece pushing plate 15 is connected to the material piece pushing device, so that the material piece pushing plate 15 moves back and forth along the material piece positioning groove 17. In this embodiment, the material piece pushing power device is arranged below the material piece positioning groove 17, and a long hole is provided at the bottom of the material piece positioning groove 17, so that the material piece pushing plate 15 can be easily connected to the material piece pushing power device. The material piece pushing plate 15 and the material piece pushing power device are slidable relative to each other, and the sliding direction is the same as the moving direction of the material piece pushing plate 15, and the pushing buffer device is arranged between the material piece pushing plate 15 and the material piece pushing power device.

[0043] A horizontal material piece pushing guide rail 22 is attached to the material piece positioning groove 17, and a material piece pushing rack 16 is slidably attached to the material piece pushing guide rail 22, and the material piece pushing plate 15 is slidably connected to the material piece pushing rack 16. The material piece pushing rack 16 is connected to a material piece pushing power device.

[0044] A pushing buffer guide rail is provided at the top of the material piece pushing rack 16, and the lower part of the material piece pushing plate 15 is slidably mounted on the pushing buffer guide rail through a long hole, and the pushing buffer guide rail is provided parallel to the moving direction of the material piece pushing plate 15. In this embodiment, the pushing buffer device is a material piece pushing spring 21, and both ends of the material piece pushing spring 21 are respectively connected to the material piece pushing plate 15 and the material piece pushing rack 16. When the material piece pushing rack 16 moves close to the lower pallet 23, the material piece pushing spring 21 urges the material piece pushing plate 15 to move, and the material piece pushing spring 21 allows the relative movement between the material piece pushing plate 15 and the material piece pushing rack 16, thus pushing the material piece to a desired position and avoiding damage to the material piece.

[0045] The material piece pushing power device includes a material piece pushing motor and a material piece pushing timing belt 20, and a pushing timing belt pulley is rotatably provided on both ends of the material piece positioning groove 17, and both ends of the material piece pushing timing belt 20 each mesh with the pushing timing belt pulley on the corresponding side. The material piece pushing motor is attached to the material piece positioning groove 17, and the output shaft of the material piece pushing motor is connected to one of the pushing timing belt pulleys, and the material piece pushing rack 16 is connected to the upper side of the material piece pushing timing belt 20.

[0046] The material piece pushing power device may use the linear module as is, and the material piece pushing timing belt 20 may be replaced with a screw nut pair.

[0047] 3, 5 and 6, the cassette jacking device includes a cassette jacking power unit, a jacking frame 19, and a crimping device, the jacking frame 19 is attached to the stand 1 so as to be able to rise and fall, the bottom of the jacking frame 19 closer to the upper pallet 23 is convex outward to form a cassette support portion, the cassette support portion is provided at the bottom of the jacking frame 19, the crimping device is attached to the top of the jacking frame 19 and provided directly above the cassette support portion, and a cavity for accommodating a cassette is provided between the crimping device and the cassette support portion. The cassette jacking power unit is connected to the jacking frame 19 and raises and lowers the jacking frame 19.

[0048] The crimping device includes a cassette crimping cylinder 31 and a platen 14, the cassette crimping cylinder 31 is mounted vertically on the top of the jacking frame 19, the platen 14 is attached to the piston rod of the cassette crimping cylinder 31 and rises and falls in sync with the piston rod of the cassette crimping cylinder 31, the platen 14 is located directly above the cassette support portion, and the cassette crimping cylinder 31 lowers the platen 14 and crimps the cassette to the cassette support portion.

[0049] The cassette jacking power unit includes a cassette jacking motor 26 and a cassette jacking screw 27, the cassette jacking motor 26 is attached to the stand 1, the cassette jacking screw 27 is arranged vertically, the cassette jacking screw 27 is rotatably attached to the stand 1, and the piston rod of the cassette jacking motor 26 is connected to the cassette jacking screw 27 to rotate the cassette jacking screw 27.

[0050] A vertical cassette jacking guide rail is attached to the stand 1, and a jacking base 30 is slidably attached to the cassette jacking guide rail. The jacking base 30 is connected to the jacking frame 19 and raises and lowers the jacking frame 19. The cassette jacking screw 27 is screwed into the jacking base 30 and raises and lowers the jacking frame 19 via the jacking base 30.

[0051] The cassette jacking power unit may be a linear module, and the cassette jacking screw 27 may be replaced by a timing belt.

[0052] The supply and discharge device 2 further includes an adjustment device, which is arranged between the jacking base 30 and the jacking frame 19, the jacking frame 19 is slidably connected to the jacking base 30, and the sliding direction is perpendicular to the moving direction of the material piece pushing plate 15, thereby adjusting the position of the cassette so that the cassette is arranged directly opposite the material piece pushing plate 15 and the material piece extrusion device.

[0053] The adjustment device includes an adjustment cylinder 28, which is mounted on a jacking base 30, and a piston rod of the adjustment cylinder 28 is connected to the jacking frame 19 to move the jacking frame 19 horizontally. Specifically, a horizontal adjustment guide rail is mounted on the upper side of the jacking base 30, and an adjustment rack 29 is slidably mounted on the adjustment guide rail, and the piston rod of the adjustment cylinder 28 is connected to the adjustment rack 29, and the jacking frame 19 is fixedly connected to the adjustment rack 29, so that the adjustment to the jacking frame 19 is more stable and reliable.

[0054] As shown in Figures 3, 5 and 7, the cassette pushing device includes a cassette pushing power unit and a cassette plunger 18, the cassette plunger 18 is horizontally arranged, the cassette plunger 18 is arranged higher than the upper pallet 23, and two cassette plungers 18 are arranged on both sides of the jacking frame 19, and the cassette in the jacking frame 19 is pushed by both ends of the cassette to the upper pallet 23. The cassette pushing power unit is also connected to each cassette plunger 18 to move them.

[0055] The cassette pushing device further includes a cassette push rack 32, each cassette plunger 18 is fixedly connected to the cassette push rack 32 and moves synchronously with the cassette push rack 32, and the cassette pushing power device is connected to the cassette push rack 32 and moves the cassette push rack 32, thereby each cassette plunger 18 moves synchronously. In this embodiment, the cassette pushing power device is a cassette push cylinder 25, and the cassette pushing power device may be implemented by a linear module.

[0056] 3, 5 and 8, the material piece extruding device includes a material piece extruding plate 13, an extrusion buffer device, and a material piece extruding power device, in which the cassette extruding plate 13 is provided opposite the material piece positioning groove 17, the material piece extruding plate 13 is slidably provided on the upper pallet 23, and the material piece extruding power device is connected to the material piece extruding plate 13 and reciprocates the material piece extruding plate 13 toward or away from the material piece positioning groove 17. The material piece extruding plate 13 is slidable relative to the material piece extruding power device, and the sliding direction is the same as the moving direction of the material piece extruding plate 13, and the extrusion buffer device is provided between the material piece extruding plate 13 and the material piece extruding power device. The material piece extruding plate 13 is provided opposite the material piece pushing plate 15.

[0057] A material piece extrusion guide rail is attached to the upper pallet 23, a material piece extrusion rack 34 is slidably attached to the material piece extrusion guide rail, the material piece extrusion rack 34 is connected to a material piece extrusion power device, the material piece extrusion plate 13 is attached to the material piece extrusion rack 34, and the extrusion buffer device is attached between the material piece extrusion plate 13 and the material piece extrusion rack 34.

[0058] In this embodiment, the extrusion buffer device is a material piece extrusion spring 35, a guide shaft is attached to the material piece extrusion rack 34, the material piece extrusion plate 13 is slidably connected to the guide shaft, the material piece extrusion spring 35 is externally fitted onto the guide shaft, and both ends of the material piece extrusion spring 35 are respectively connected to the material piece extrusion plate 13 and the material piece extrusion rack 34, thereby pushing the material piece to the desired position while avoiding damage to the material piece.

[0059] The material piece extrusion power device includes a material piece extrusion motor and a material piece extrusion timing belt 33, an extrusion timing belt pulley is rotatably attached to the upper pallet 23, there are two extrusion timing belt pulleys provided at both ends of the material piece extrusion guide rail, both ends of the material piece extrusion timing belt 33 are connected to the two extrusion timing belt pulleys, respectively, and the output shaft of the material piece extrusion motor is connected to one of the extrusion timing belt pulleys. A material piece extrusion rack 34 is fixedly connected to the upper side of the material piece extrusion timing belt 33.

[0060] The material piece extrusion power device may use a cylinder or linear module, and the material piece extrusion timing belt 33 may be replaced with a screw-nut pair.

[0061] When pushing the material piece out of the groove, the material piece extrusion motor moves the material piece extrusion plate 13 via the material piece extrusion timing belt 33, and the material piece extrusion plate 13 extends into the cassette and pushes the corresponding material piece into the material piece positioning groove 17 until the end of the material piece is positioned by the material piece pushing plate 15, and the presence of the material piece extrusion spring 35 can avoid damage to the material piece.

[0062] As shown in Figures 9 and 10, the conveying device 3 includes a translation device, a lifting device, an extension device, and a suction device, in which the translation device is attached to the stand 1, the lifting device is attached to the translation device and moves back and forth between the supply and discharge device 2 and each set of welding chambers following the translation device, the extension device is attached to the lifting device and moves up and down following the lifting device, the suction device is attached to the extension device and moves horizontally following the extension device, and the movement direction of the extension device is perpendicular to the movement direction of the translation device.

[0063] The translation device includes a translation motor and a translation rack 37, a horizontal translation guide rail 36 is attached to the stand 1, the translation rack 37 is slidably attached to the translation guide rail 36, and the translation motor is attached to the stand 1 and connected to the translation rack 37 to move it horizontally. The translation motor is a linear module, but the translation rack 37 may be moved by a motor via a timing belt.

[0064] The lifting device includes a lifting power unit and a lifting rack 39, the lifting rack 39 being slidably mounted to the translating rack 37, and the lifting power unit connected to the lifting rack 39 to raise and lower it. In this embodiment, the translating rack 37 is mounted to a pillar 38, and the lifting rack 39 is slidably mounted to the pillar 38. The lifting power unit is a linear module, but the lifting rack 39 may also be raised and lowered by a motor via a timing belt.

[0065] The telescopic device includes a telescopic power unit and a telescopic rack 40, the telescopic rack 40 being slidably mounted on the lift rack 39, and the telescopic power unit is connected to the telescopic rack 40 to move it horizontally.

[0066] The telescopic power device includes a telescopic drive motor 43 and a telescopic timing belt 42. Telescopic timing belt pulleys are rotatably attached to both ends of the lifting rack 39, and both ends of the telescopic timing belt 42 are connected to both telescopic timing belt pulleys, respectively. The telescopic drive motor 43 is attached to the lifting rack 39, and the output shaft of the telescopic drive motor 43 is connected to one of the telescopic timing belt pulleys. The telescopic rack 40 is fixedly connected to one side of the telescopic timing belt 42. The telescopic power device may use a linear module, but the telescopic timing belt 42 may be replaced with a screw-nut pair.

[0067] The suction device includes a suction rack and a nozzle 41, the suction rack is attached to the underside of the extendable rack 40, the nozzle 41 is attached to the bottom of the suction rack, and multiple nozzles 41 are arranged side by side at intervals, thereby transporting the material pieces.

[0068] 11-12, the welding chamber base 9 includes a heat insulating cover 44 and a support plate 45. A base body 46 is provided in the heat insulating cover 44. A lower mounting cavity that opens upward is provided at the top of the base body 46. The heat insulating cover 44 is a rectangular parallelepiped. The support plate 45 is provided in the base body 46. The bottom of the support plate 45 is supported by the bottom of the base body 46 and is removably connected to the base body 46. The side of the support plate 45 is provided at a distance from the inner wall of the base body 46. A seal ring is provided at the top of the base body 46, and the seal ring is provided to surround the lower mounting cavity.

[0069] The lower heating device includes a heating tube 47 provided in the support plate 45, the heating tube 47 is provided in the longitudinal direction of the support plate 45, and a plurality of the heating tubes 47 are provided in parallel at intervals along the lateral direction of the support plate 45. In this embodiment, two heating tubes 47 are provided in parallel at intervals along the lateral direction of the support plate 45. A temperature sensor is further provided in the support plate 45, the temperature sensor being provided between the two heating tubes 47 to detect the temperature of the support plate 45 in real time, and the temperature of the material piece reflects the temperature of the support plate 45.

[0070] Furthermore, the support plate 45 includes an outer plate 4501 and an inner plate 4502, the outer plate 4501 is provided on the upper side of the inner plate 4502 and the outer plate 4501 is removably connected to the inner plate 4502, and the temperature sensor and the heating tube 47 are both provided between the outer plate 4501 and the inner plate 4502, thereby making it easy to attach and detach the heating tube 47.

[0071] A lower groove is provided at the bottom of the base body 46, and an upper groove is provided on the inner wall of the bottom of the insulating cover 44. The lower groove and the upper groove define a lower cooling channel 55, which is spirally arranged in the welding chamber base 9, thereby increasing the cooling area and enabling the material pieces to be cooled uniformly.

[0072] As shown in Figures 12 and 13, a plurality of air supply grooves 4503 are provided in the bottom of the support plate 45, i.e., the bottom of the inner plate 4502, and the bottom of the support plate 45 is in close contact with the base body 46, whereby the air supply grooves 4503 and the bottom of the base body define a plurality of air supply channels.

[0073] A protective gas supply device is connected to each welding chamber, and the protective gas supply device includes an air supply pipe 48, the outlet of which passes through the insulating cover 44 and the bottom of the base body 46 and communicates with the inlet of each air supply channel, whereby the outlet of each air supply channel is provided incorporating the support plate 45, and each air supply channel communicates with the space between the support plate 45 and the base body 46, so that nitrogen can enter the welding cavity uniformly.

[0074] As shown in FIG. 14, the structure of welding chamber top cover 8 is the same as that of welding chamber base 9 except that support plate 45 is not provided inside welding chamber top cover 8, but the structure of welding chamber top cover 8 will not be described in detail.

[0075] An air bleed port 801 is provided at the top of the welding chamber top cover 8, and the air bleed port 801 communicates with the condensing unit 6, enabling vacuum suction inside the welding chamber. The air bleed port 801 passes through the insulating cover 44 and the top cover body of the welding chamber top cover 8, and communicates with an upper mounting cavity in the top cover body.

[0076] When the welding chamber top cover 8 is joined to the upper side of the welding chamber base 9, the upper mounting cavity and the lower mounting cavity define a welding cavity, the edge of the top cover body crimps the edge of the base body 46, and the top cover body fits with the base body 46 to press the sealing ring, thereby ensuring a good sealing effect between the welding chamber top cover 8 and the welding chamber base 9.

[0077] The upper heating device includes a heating pipe 47 provided in the top cover body, the heating pipe 47 is provided along the longitudinal direction of the top cover body, and two heating pipes 47 are provided in parallel with a space between them along the lateral direction of the top cover body. The upper cooling channel is provided between the top cover body and the insulating cover 44 of the welding chamber top cover 8.

[0078] As shown in Figures 15-16, in this embodiment, each lid opening and closing device 5 includes a first lid opening and closing device and a second lid opening and closing device, and the welding chamber top covers 8 of two welding chambers in the same set are connected to the first lid opening and closing device and the second lid opening and closing device, respectively, so that the two welding chamber top covers 8 in the same set are raised and lowered individually.

[0079] The first lid opening / closing device includes a first lid opening / closing cylinder 49 and a first lid opening / closing rack 50, a mounting base 53 is provided on the stand 1, the mounting base 53 is provided directly below the corresponding set of welding chambers, a vertical first lid opening / closing guide rail 54 is provided on the mounting base 53, the two first lid opening / closing guide rails 54 are arranged side by side with a gap between them, the first lid opening / closing rack 50 is provided on one side of the mounting base 53, and the first lid opening / closing rack 50 is slidably attached to the first lid opening / closing guide rail 54, the first lid opening / closing cylinder 49 is attached vertically to the stand 1, and the piston rod of the first lid opening / closing cylinder 49 is connected to the first lid opening / closing rack 50 and raises and lowers the first lid opening / closing rack 50.

[0080] A first connecting plate is provided on both sides of the first lid opening / closing rack 50, and the two first connecting plates are provided with a gap between them. The lower ends of the two first connecting plates are all fixedly connected to the first lid opening / closing rack 50, and the upper ends of the two first connecting plates are all bent close to the welding chamber and connected to the welding chamber top cover 8 of the welding chamber above. This welding chamber top cover 8 is located between the two first connecting plates, so that this welding chamber top cover 8 rises and falls in synchronization with the first connecting plates.

[0081] The second lid opening / closing device includes a second lid opening / closing rack 52 and a second lid opening / closing cylinder 56. A vertical second lid opening / closing guide rail 51 is attached to the inside of each of the two first connecting plates of the first lid opening / closing rack 50. The second lid opening / closing rack 52 is provided between the two first connecting plates. Both sides of the second lid opening / closing rack 52 are slidably connected to the second lid opening / closing guide rail 51 on the corresponding side. A second connecting plate is provided on both sides of the upper side of the second lid opening / closing rack 52. Two second connecting plates are provided side by side with a gap between them. The upper ends of the two second connecting plates are both bent close to the welding chamber. The welding chamber top cover 8 of the lower welding chamber is fixedly connected to the upper end of the second connecting plate. This welding chamber top cover 8 is located between the two second connecting plates. As a result, this welding chamber top cover 8 rises and falls in synchronization with the two second connecting plates.

[0082] 17, the condensation unit 6 includes a separation tube 57 and a collection bottle 58, the inlet and outlet of the separation tube 57 are both provided on the side, the inlet of the separation tube 57 is connected to the welding cavity of the welding chamber, and the outlet of the separation tube 57 is connected to the inlet of the filtration unit 7. The collection bottle 58 is provided below the separation tube 57, the top of the collection bottle 58 is connected to the bottom of the separation tube 57, and a seal is provided between the top of the collection bottle 58 and the bottom of the separation tube 57, and the top of the separation tube 57 is sealed.

[0083] When the welding chamber is evacuated, the gas enters the separation tube 57, while the liquid enters the collection bottle 58 by gravity, achieving gas-liquid separation.

[0084] The working process of the static vacuum welding furnace is as follows: the workpieces to be welded are placed in the cassette, the conveyor motor 24 conveys the cassette to the upper side of the cassette support part of the jacking frame 19 via the conveyor timing belt 12, and the cassette crimping cylinder 31 pushes the platen 14 to move it downward and crimp the cassette to the cassette support part.

[0085] The cassette jacking motor 26 raises the jacking base 30 via the cassette jacking screw 27, and the jacking frame 19 rises in sync with the jacking base 30 so that the material piece at the top of the cassette faces the material piece positioning groove 17. At this time, the adjustment cylinder 28 drives the adjustment rack 29 to adjust the position of the jacking frame 19, so that the material piece in the cassette faces the material piece positioning groove 17.

[0086] The material piece extrusion motor drives the material piece extrusion plate 13 via the material piece extrusion timing belt 33, and the material piece extrusion plate 13 feeds the material piece from the cassette into the material piece positioning groove 17 by the end of the material piece, and when the end of the material piece is supported by the material piece pushing plate 15, the material piece extrusion motor resets the material piece extrusion plate 13.

[0087] The nozzle 41 of the conveying device 3 sucks the workpieces in the workpiece positioning groove 17 and conveys them into the welding chamber. The cassette jacking motor 26 also raises the jacking base 30 by the cassette jacking screw 27, thereby raising the jacking frame 19 a predetermined distance and further aligning the workpiece at the top of the cassette with the workpiece positioning groove 17. In this way, all of the workpieces in the cassette are sent into the welding chamber.

[0088] The pieces of material to be welded are placed on the support plate 45 of the welding chamber, and then the lifting device moves the welding chamber top cover 8 downward so that it is coupled to the welding chamber base 9 .

[0089] The air supply pipe 48 introduces nitrogen into the welding chamber, and also connects the upper and lower cooling channels 55 to the circulating water tank 4 through the balance pipe, and the shutoff valve between the air extraction port 801 and the condensing unit 6 is also closed. The heating pipe 47 heats the welding chamber to a predetermined temperature.

[0090] A shutoff valve in the air supply line 48 closes the air supply line 48 while the vacuum pump draws a vacuum on the welding chamber, thereby causing welding of the workpieces.

[0091] After welding is completed, the isolation valves between the upper and lower cooling channels 55 and the balance tubes are closed, and the cooling pump sends circulating water through the upper and lower cooling channels 55, thereby cooling the welding chamber.

[0092] The conveying device sends the workpieces that have been completed welded into the workpiece positioning groove 17, and the workpiece pushing motor pushes the workpieces in the workpiece positioning groove 17 into the cassette via the workpiece pushing timing belt 20. Next, the cassette jacking motor 26 moves the jacking base 30 downward a predetermined distance using the cassette jacking screw 27, and the jacking frame 19 moves synchronously to lower the cassette a predetermined distance, so that the empty mounting portions on both sides of the cassette once again face the workpiece positioning groove 17 and receive more workpieces in the workpiece positioning groove 17.

[0093] After the welded material pieces are packed inside the cassette, the cassette jacking motor 26 raises the jacking base 30 by the cassette jacking screw 27, thereby moving the cassette upward by the jacking frame 19 until it is aligned with the upper pallet 23, and the cassette crimping cylinder 31 moves the platen 14 upward to release the crimping on the cassette, at this time the cassette push cylinder 25 moves the cassette push rack 32, thereby moving each cassette plunger 18, and the cassette plunger 18 pushes the cassette in the jacking frame 19 to the upper pallet 23.

[0094] The above is merely a preferred embodiment of the present invention, and does not limit the present invention in other forms, and those skilled in the art can use the technical content disclosed above to make equivalent changes or modifications to equivalent embodiments. However, as long as it does not deviate from the content of the technical solution of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention belong to the protection scope of the technical solution of the present invention.

Claims

1. 1. A static vacuum welding furnace, comprising: The welding chamber includes a supply and discharge device (2), a transport device (3), a welding chamber, and a lid opening and closing device (5), and a plurality of welding chambers are arranged side by side at intervals, a lid opening and closing device for opening and closing the welding chamber is connected to the welding chamber, the supply and discharge device (2) is provided on one side of the welding chamber, a transport device (3) is provided between the supply and discharge device (2) and each welding chamber, and a heating device and a cooling device are connected to each welding chamber, The static vacuum welding furnace is characterized in that the supply and discharge device (2) includes a material piece pushing device, a material piece extruding device, and a material piece positioning device, the material piece pushing device and the material piece extruding device being provided on each side of the material piece positioning device, and a space for placing a cassette is provided between the material piece extruding device and the material piece positioning device.

2. 2. The static vacuum welding furnace according to claim 1, characterized in that the material piece extrusion device includes a material piece extrusion plate (13), an extrusion buffer device, and a material piece extrusion power device, the material piece extrusion plate (13) is connected to the material piece extrusion power device, the material piece extrusion plate (13) moves along a direction approaching or moving away from the material piece positioning device, and the extrusion buffer device is provided between the material piece extrusion plate (13) and the material piece extrusion power device.

3. 3. The static vacuum welding furnace according to claim 2, characterized in that the extrusion buffer device includes a material piece extrusion spring (35), the material piece extrusion plate (13) and the material piece extrusion power device are relatively slidable along a direction parallel to the moving direction of the material piece extrusion plate (13), and the material piece extrusion spring (35) is arranged between the material piece extrusion power device and the material piece extrusion plate (13).

4. 2. A static vacuum welding furnace according to claim 1, characterized in that the workpiece positioning device comprises an upwardly opening workpiece positioning groove (17).

5. 2. The static vacuum welding furnace according to claim 1, wherein the supply and discharge device (2) further includes a cassette supply device, a cassette jacking device, a cassette holder, and a cassette push-out device, the cassette jacking device is provided in the space, the cassette push-out device and the cassette holder are respectively provided on both sides of the cassette jacking device, and the cassette push-out device is provided directly opposite the cassette holder, the cassette supply device is provided on one side of the cassette jacking device, and the cassette supply device and the cassette holder are provided spaced apart in the vertical direction.

6. 6. The static vacuum welding furnace according to claim 5, wherein the cassette jacking device includes a cassette jacking power unit, a jacking frame (19), and a crimping device, the cassette jacking power unit is connected to the jacking frame (19) and raises and lowers the jacking frame (19), a cassette support unit is provided at the bottom of the jacking frame (19), the crimping device is attached to the top of the jacking frame (19), and the crimping device is provided directly opposite the cassette support unit.

7. 7. The static vacuum welding furnace according to claim 6, characterized in that the supply and discharge device (2) further includes an adjustment device, which is mounted on the cassette jacking power device and connected to the jacking frame (19), and the adjustment direction is the same as the extrusion direction of the cassette extrusion device.

8. The static vacuum welding furnace according to claim 5 or 7, characterized in that the cassette push-out device includes a cassette plunger (18) and a cassette push-out power device, a plurality of cassette plungers (18) are arranged in parallel, the cassette push-out power device is connected to each of the cassette plungers (18), and each cassette plunger (18) moves synchronously toward or away from the cassette holder.

9. 2. The static vacuum welding furnace according to claim 1, characterized in that the plurality of sets of welding chambers are arranged in parallel with a space therebetween, each set of welding chambers includes two welding chambers spaced apart in the vertical direction, and each set of welding chambers is connected to a lid opening and closing device (5).

10. 10. The static vacuum welding furnace according to claim 9, characterized in that each of the lid opening and closing devices (5) includes a first lid opening and closing device and a second lid opening and closing device, the first lid opening and closing device and the second lid opening and closing device are respectively connected to two welding chambers of the same set, and the second lid opening and closing device is attached to the first lid opening and closing device.

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