Electromagnetic valve magnetic sleeve production process and pressing tool

Abstract

The application relates to a solenoid valve magnetic guide sleeve production process and a pressing tool, and relates to the field of solenoid valve manufacturing.The application comprises the following steps: S1, surface treatment and cleaning treatment are performed on a front-end sleeve, a fixed ring and a rear-end sleeve; S2, the front-end sleeve is placed into a jig through an automatic assembly line, then the fixed ring and the rear-end sleeve are sequentially placed into the jig, and the three parts are sequentially assembled together through pressing assembly and pressing of a pressing tool; S3, the parts after the pressing are detected through automatic detection equipment to check whether the pressing is in place; S4, the pressed sleeve assembly is placed on a tool with brazing filler, and the brazing filler is placed; S5, the parts filled with the brazing filler are transplanted to a heat treatment rack, and are sent into a vacuum brazing furnace for welding; and S6, detection is performed after the welding.The application has the effects of being suitable for multi-variety, large-batch and small-batch production, low processing cost, simple and short process route, etc.

Description

TECHNICAL FIELD

[0001] The application relates to the field of electromagnetic valve manufacturing, in particular to an electromagnetic valve magnetic conducting sleeve production process and pressing tool. BACKGROUND

[0002] The electromagnetic valve is an industrial equipment controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, is not limited to hydraulic pressure and pneumatic pressure, is used for adjusting the direction, flow, speed and other parameters of medium in an industrial control system, and is currently widely applied in the fields of gas control and liquid control.

[0003] The magnetic conducting sleeve of the electromagnetic valve generally comprises a front end sleeve, a rear end sleeve and an intermediate fixing ring, a traditional magnetic conducting sleeve adopts a cylindrical bar material to perform upsetting forming process, then the sleeve outer dimension is machined, a welding ring groove is turned at a specific position in the middle, a copper wire is stacked in the ring groove by adopting argon arc welding process to form a magnetic separation ring, the workpiece after cooling is machined again, the welding position is machined to the required size, and the inner hole is machined to the required size, the method has high production cost, long cycle, and is not suitable for multi-variety and small-batch production because of the investment of forging and pressing dies and welding tools. SUMMARY

[0004] In order to improve the problems of high production cost, long cycle, investment of forging and pressing dies and welding tools and unsuitability for multi-variety and small-batch production of the magnetic conducting sleeve, the application provides an electromagnetic valve magnetic conducting sleeve production process and pressing tool.

[0005] In one aspect, the electromagnetic valve magnetic conducting sleeve production process provided by the application adopts the following technical scheme:

[0006] An electromagnetic valve magnetic conducting sleeve production process comprises the following steps: S1, surface treatment and cleaning treatment are performed on a front end sleeve, a fixing ring and a rear end sleeve;

[0007] S2, the front end sleeve is placed into a jig through an automatic assembly line, then the fixing ring and the rear end sleeve are sequentially placed into the jig, and pressing tool is used for assembly and pressing, so that the three parts are sequentially assembled together;

[0008] S3, the parts after pressing are detected by an automatic detection device to check whether the pressing is in place;

[0009] S4, the pressed sleeve assembly is placed on a tool with brazing material, and the brazing material is placed;

[0010] S5, the part filled with the brazing material is transplanted to a heat treatment rack, and is sent into a vacuum brazing furnace for welding;

[0011] S6, detection is performed after welding.

[0012] By adopting the technical scheme, the magnetic guide sleeve adopts a machining route and automatic assembly process in manufacturing, and adopts a vacuum brazing process, so that the magnetic guide sleeve can be produced in a large quantity, a small quantity or a multi-variety, and the magnetic guide sleeve is processed by pressing and brazing, so that the processing cost of the magnetic guide sleeve is low, and the process route is simple and short.

[0013] In one specific embodiment, in step S4, the brazing filler metal is a copper-based brazing filler metal, the preheating temperature is 550-600 DEG C, and the brazing temperature is 980-1100 DEG C.

[0014] In step S5, the processed workpiece is placed in the heating cavity of the brazing furnace, 800-1000 workpieces are processed per furnace, and the furnace door is closed. Before brazing, the vacuum system of the brazing furnace is started to remove the air in the furnace to a vacuum state, and then the heating system is started. When the workpiece is heated to the preheating temperature with the furnace, the temperature is kept for 6-12 minutes, then the furnace continues to heat to the brazing temperature, keeps for 10-20 minutes, and then stops heating. The fast cooling program is started to cool the temperature in the furnace, and the furnace is cooled to the demagnetization temperature, and the temperature is kept for 6-12 minutes. Finally, the furnace is cooled to the discharge temperature, and the discharge temperature is controlled at room temperature 35 DEG C.

[0015] In another aspect, the application provides a magnetic guide sleeve pressing tool for an electromagnetic valve, which adopts the following technical scheme:

[0016] A magnetic guide sleeve pressing tool for an electromagnetic valve, comprising a pressing platform, two fixed cylinders with coaxial axes arranged on the pressing platform, the two fixed cylinders being arranged above and below each other, a storage cylinder for placing a fixed ring being arranged on the pressing platform, a clamping assembly for moving the fixed ring out of the storage cylinder being arranged on the pressing platform, the clamping assembly being located between the two fixed cylinders, a first feeding assembly for placing a front-end sleeve and a second feeding assembly for placing a rear-end sleeve being arranged on the pressing platform, a discharging assembly being arranged on each of the two fixed cylinders, and a pressing assembly for driving the front-end sleeve and the rear-end sleeve to move close to each other being arranged on the pressing platform.

[0017] By adopting the technical scheme, when the magnetic conductive sleeve is press-fit assembled, the front end sleeves are put into the first feeding assembly in batches, the rear end sleeves are put into the second feeding assembly in batches, the fixing rings are put into the storage cylinder in batches, then the clamping assembly is driven to move the fixing rings out and between the two fixing cylinders, then the extrusion assembly is started to insert the front end sleeves and the rear end sleeves into the corresponding fixing cylinders respectively, then the extrusion assembly is driven to insert the front end sleeves and the rear end sleeves into the fixing rings, so that the three are press-fit into the magnetic conductive sleeve, then the press-fit magnetic conductive sleeve is taken out by the discharging assembly, and then the above operation is repeated to realize continuous press-fit of the magnetic conductive sleeve. Compared with the manual feeding mode, the press-fit efficiency of the magnetic conductive sleeve can be improved, and the production efficiency of the magnetic conductive sleeve is improved.

[0018] In a specific implementation scheme, the first feeding assembly comprises two first conveying mechanisms and two support rods, the shaft shoulders of the front end sleeves are overlapped on the two first conveying mechanisms, and the support rods are used to support the front end sleeves on the first conveying mechanisms, and the front end sleeves are located between the two support rods.

[0019] The extrusion assembly comprises two hydraulic cylinders, one of which is located above the support rod, a guide rod is arranged on the press-fit platform, the guide rod corresponds to the support rod one by one, the guide rod is located between the support rod and the upper fixing cylinder, and the two guide rods are away from each other from the side away from the upper fixing cylinder to the side close to the upper fixing cylinder. A support spring is arranged on each guide rod, the support spring is used to support the support rod, and the hydraulic cylinder extrudes the front end sleeve so that the front end sleeve is inserted into the upper fixing cylinder.

[0020] By adopting the technical scheme, when the front end sleeves are fed, a plurality of front end sleeves are overlapped on the two first conveying mechanisms, then the first conveying mechanism is started to convey the front end sleeves to the two support rods, then the hydraulic cylinder is driven to elongate, the piston rod of the hydraulic cylinder pushes towards the upper fixing cylinder, the shaft shoulder of the front end sleeve pushes the support rod to move downwards, the support rod slides towards the two sides under the guidance of the guide rod, and finally the support rod is separated from the front end sleeve. After the support rod and the front end sleeve are separated, the support rod is restored to the original position under the pushing of the support spring to support the next front end sleeve, then the piston rod of the hydraulic cylinder pushes the front end sleeve to pass through the fixing cylinder and be inserted into the fixing ring, so that continuous feeding of the front end sleeves is realized.

[0021] In one specific embodiment, the second feeding assembly comprises a second conveying mechanism and a support plate, the second conveying mechanism is used to transport the rear end sleeve to the support plate, the support plate is slidingly arranged with the pressing platform, and another hydraulic cylinder is arranged below the support plate, the support plate is located at the piston rod end of the hydraulic cylinder, and the hydraulic cylinder pushes the support plate so that the rear end sleeve is inserted into the lower fixed cylinder.

[0022] By adopting the above technical scheme, while the front end sleeve is fed, the second conveying mechanism drives the rear end sleeve to be transported to the support plate, then the hydraulic cylinder is driven to be elongated, the piston rod of the hydraulic cylinder drives the support plate to move upward, the support plate pushes the rear end sleeve to pass through the lower fixed cylinder and is inserted into the fixed ring at the same time with the front end sleeve, so that the continuous pressing operation of the magnetic conducting sleeve is realized, and the pressing efficiency of the magnetic conducting sleeve is improved.

[0023] In one specific embodiment, the fixed cylinder is composed of an upper arc plate and a lower arc plate, one end of the lower arc plate is rotationally arranged with one end of the upper arc plate, and a discharging groove is arranged on the inner side wall of the lower arc plate.

[0024] The discharging assembly comprises a hard elastic plate arranged on the upper arc plate, the hard elastic plate is located in the discharging groove, the hard elastic plate is used to push the front end sleeve or the rear end sleeve out of the lower arc plate, and each hydraulic cylinder is connected with the upper arc plate through a connecting piece.

[0025] By adopting the above technical scheme, after the pressing of the magnetic conducting sleeve is completed, the hydraulic cylinder is retracted, the upper arc plate is driven to rotate through the connecting piece, the hard elastic plate is driven to slide out of the discharging groove through the upper arc plate, and the magnetic conducting sleeve after the pressing is completed is pushed out of the lower arc plate, so that the discharging of the magnetic conducting sleeve is realized.

[0026] In one specific embodiment, the connecting piece comprises a rack, a driving gear and a conveying belt, the rack is fixedly arranged at the piston rod end of the hydraulic cylinder, a driving wheel and a driven wheel are rotationally arranged on the pressing platform, the driving gear is coaxially arranged on the driving wheel, the driving wheel and the driven wheel are connected through the conveying belt, a pull rod is slidingly arranged on the pressing platform, a connecting rod is hingedly arranged on the pull rod, the other end of the connecting rod is hingedly arranged with the upper arc plate, a stop block is arranged on the pull rod, and a push block is arranged on the conveying belt and used to push the stop block to move away from the upper arc plate.

[0027] By adopting the technical scheme, when the magnetic conductive sleeve is unloaded, the hydraulic cylinder is contracted, the piston rod of the hydraulic cylinder drives the rack to slide, the rack drives the driving gear to rotate, the driving gear drives the driving wheel to rotate, the driving wheel drives the conveying belt to move, the push block on the conveying belt pushes the stop block to slide, the stop block drives the pull rod to slide away from the upper arc plate, the pull rod drives the upper arc plate to overturn through the connecting rod, so that the upper arc plate and the lower arc plate are opened, and the movement of the hydraulic cylinder drives the rotation of the upper arc plate.

[0028] In a specific implementation, the pressing platform is provided with an unloading spring for pushing the pull rod to slide towards the upper arc plate, and the stop block is hingedly connected with a rotating plate at an end away from the upper arc plate, and the push block pushes the rotating plate away from the upper arc plate to make the stop block slide.

[0029] By adopting the technical scheme, with the contraction of the hydraulic cylinder, the push block pushes the rotating plate to move, the rotating plate abuts against the stop block and pulls the stop block to slide, the stop block drives the pull rod to move, the pull rod pushes the unloading spring to contract, at this time, the upper arc plate drives the hard elastic plate to push the pressed magnetic conductive sleeve out of the lower arc plate, then with the continuous contraction of the hydraulic cylinder, the push block moves to the arc position along with the conveying belt, then with the movement of the push block, the push block is separated from the rotating plate, at this time, the pull rod is pushed by the unloading spring to make the upper arc plate close to the lower arc plate, and when the parts are pressed, the hydraulic cylinder is elongated, the hydraulic cylinder drives the conveying belt to rotate reversely, the conveying belt pushes the push block to press the stop block, at this time, the rotating plate rotates, and the push block passes over the stop block, so that the continuous overturning of the upper arc plate is driven.

[0030] In a specific implementation, the clamping assembly includes two clamping plates abutting against the fixing ring and two clamping hydraulic cylinders, the pressing platform is provided with two lifting supports, the lifting supports correspond to the clamping hydraulic cylinders one by one, the clamping hydraulic cylinders are connected with the lifting supports, the clamping plates are arranged at the piston rod ends of the clamping hydraulic cylinders, and the fixing ring is located between the two clamping plates.

[0031] By adopting the technical scheme, when the fixing ring is moved, the lifting support is first driven to be elongated to the storage cylinder, then the clamping hydraulic cylinder is driven to elongate the clamping plate to clamp the fixing ring in the storage cylinder, and then the lifting support is contracted to clamp the fixing ring out of the storage cylinder to between the two fixing cylinders, so that the continuous feeding of the fixing ring is realized.

[0032] In one specific embodiment, the clamping plate is provided with a buffer rod, the piston rod end of the clamping hydraulic cylinder is provided with a buffer support, the buffer rod is inserted into the buffer support and is arranged in sliding mode, a buffer spring is sleeved on the buffer rod, one end of the buffer spring is connected with the clamping plate, and the other end of the buffer spring is connected with the buffer support.

[0033] By adopting the technical scheme, when the clamping hydraulic cylinder drives the clamping plate to clamp the fixing ring, the clamping plate extrudes the fixing ring, the buffer rod slides with the buffer support, and the buffer spring is contracted, so that the clamping plate is effectively prevented from extruding and deforming the fixing ring.

[0034] In summary, the present application has at least one of the following beneficial technical effects:

[0035] 1. The magnetic guide sleeve adopts a machining route and automatic assembly process in manufacturing, and adopts a vacuum brazing process, and can be used for multi-variety, large-batch and small-batch production. The magnetic guide sleeve is processed by pressing and brazing, so that the processing cost of the magnetic guide sleeve is low, and the process route is simple and short.

[0036] 2. When the magnetic guide sleeve is assembled by pressing, the front-end sleeve is placed in batches in the first feeding assembly, the rear-end sleeve is placed in batches in the second feeding assembly, and the fixing ring is placed in batches in the storage cylinder, then the clamping assembly is driven to move the fixing ring out and place it between the two fixing cylinders, then the extrusion assembly is started to insert the front-end sleeve and the rear-end sleeve into the corresponding fixing cylinders, then the extrusion assembly is driven to insert the front-end sleeve and the rear-end sleeve into the fixing ring, so as to press and combine the three into a magnetic guide sleeve, then the discharging assembly is used to take out the pressed magnetic guide sleeve, and then the above operation is repeated to realize continuous pressing of the magnetic guide sleeve. Compared with the manual feeding mode, the pressing efficiency of the magnetic guide sleeve is improved, and the production efficiency of the magnetic guide sleeve is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic view of an electromagnetic valve magnetic guide sleeve production process and pressing tool according to an embodiment of the present application.

[0038] Figure 2 is a view along Figure 1 A-A line.

[0039] Figure 3 is a view along Figure 1 B-B line.

[0040] Figure 4 is Figure 3 D part enlarged view.

[0041] Figure 5 is Figure 1 C part enlarged view.

[0042] Figure 6 is Figure 5 E part in the enlarged view.

[0043] BRIEF DESCRIPTION OF DRAWINGS: 1, pressing platform; 11, storage cylinder; 111, discharge port; 2, fixed cylinder; 21, upper arc plate; 22, lower arc plate; 23, discharge chute; 24, discharge assembly; 241, hard elastic plate; 25, connecting piece; 251, rack; 252, drive gear; 253, conveying belt; 254, driving wheel; 255, driven wheel; 256, sliding support; 257, pull rod; 258, connecting rod; 259, stop block; 261, rotating plate; 262, push block; 263, discharge spring; 3, clamping assembly; 31, clamping plate; 32, clamping hydraulic cylinder; 33, lifting support; 34, buffer support; 35, buffer rod; 36, buffer spring; 4, first feeding assembly; 41, first conveying mechanism; 42, support rod; 43, guide rod; 44, support spring; 5, second feeding assembly; 51, second conveying mechanism; 52, support plate; 6, extrusion assembly; 61, hydraulic cylinder; 71, front end sleeve; 72, fixed ring; 73, rear end sleeve. DETAILED DESCRIPTION

[0044] The following will be described in detail in combination with the accompanying Figures 1-6 The application is further described in detail.

[0045] In one aspect, the application discloses a production process of a solenoid valve magnetic guide sleeve.

[0046] A production process of a solenoid valve magnetic guide sleeve, comprising the following steps: S1: surface treatment and cleaning treatment are performed on the front end sleeve 71, the fixed ring 72 and the rear end sleeve 73;

[0047] S2: the front end guide pipe is placed into a jig through an automatic assembly line, then the fixed ring 72 and the rear end sleeve 73 are sequentially placed into the jig, and assembly and pressing are performed through a pressing tool, so that the three parts are sequentially assembled together;

[0048] S3: detection is performed on the parts after pressing through an automatic detection device to check whether the pressing is in place;

[0049] S4: the sleeve assembly after pressing is placed on a tool with brazing filler metal, and the brazing filler metal is placed;

[0050] S5: the part filled with the brazing filler metal is transplanted to a heat treatment rack and sent into a vacuum brazing furnace for welding;

[0051] S6: detection is performed after welding.

[0052] In step S2, the fixed ring 72 is made of 304 stainless steel magnetic separation material.

[0053] In step S4, the solder adopts copper-based brazing filler metal, the preheating temperature is 550-600 DEG C, the brazing temperature is 980-1100 DEG C, in specific implementation, the copper-based brazing filler metal can be selected as annular copper electrode, or welding wire, or paste copper-based solder, in addition to the use of copper-based solder, silver-based solder, or aluminum-based solder can also be used, different solder must use different welding parameters, and the process is adjusted accordingly.

[0054] In step S5, the processed workpiece is placed in the heating cavity of the brazing furnace, 800-1000 workpieces are processed per furnace, and the furnace door is closed, before brazing, the vacuum system of the brazing furnace is started, the air in the furnace is exhausted to a vacuum state, then the heating system is started, the workpiece is heated to the preheating temperature with the furnace, and the temperature is kept for 6-12 minutes to ensure that all workpieces in the furnace are heated uniformly, and the temperature of each part of each workpiece is consistent, then the furnace continues to heat to the brazing temperature, and after keeping warm for 10-20 minutes, the heating is stopped, and the fast cooling program is started to cool the temperature in the furnace, and the furnace is cooled to the demagnetization temperature, and the temperature is kept for 6-12 minutes, and finally the furnace is slowly cooled to the discharge temperature, and the discharge temperature is generally controlled at about 35 DEG C of indoor temperature.

[0055] The magnetic guide sleeve adopts a machining route and an automatic replacement assembly process in manufacturing, and adopts a vacuum brazing process, and can be produced in a large batch, a small batch or a multi-variety, and is pressed and brazed, so that the processing cost of the magnetic guide sleeve is low, the process route is simple and short, the maximum pressure resistance in the production process is 420 bar, and the magnetic guide sleeve is suitable for high-pressure electromagnetic valves. In the brazing process, the brazing temperature is 1100 DEG C, so that the magnetic guide sleeve is subjected to smaller thermal stress in the production process, thereby reducing stress deformation of the magnetic guide sleeve, and thereby improving stability and quality reliability of the magnetic guide sleeve.

[0056] In another aspect, the embodiment of the application discloses an electromagnetic valve magnetic guide sleeve pressing tool.

[0057] Reference Figure 1 , Figure 2The electromagnetic valve magnetic conducting sleeve pressing tool comprises a vertical pressing platform 1, two fixed cylinders 2 are fixedly arranged on the pressing platform 1 and are arranged in an upper and lower interval, the axes of the two fixed cylinders 2 are collinear, a storage cylinder 11 is fixedly arranged on the pressing platform 1, the storage cylinder 11 is vertically arranged, the storage cylinder 11 is arranged at the side of the pressing platform 1, the fixed cylinder 2 is arranged between the storage cylinder 11 and the pressing platform 1, the bottom of the storage cylinder 11 is provided with a discharge port 111, the fixed rings 72 are placed in the storage cylinder 11 one by one, the pressing platform 1 is provided with a clamping assembly 3 for conveying the fixed rings 72 from the storage cylinder 11 to the space between the two fixed cylinders 2, the pressing platform 1 is provided with a first feeding assembly 4 for conveying the front end sleeve 71 and a second feeding assembly 5 for conveying the rear end sleeve 73, the first feeding assembly 4 is arranged above the upper fixed cylinder 2, the second feeding assembly 5 is arranged below the lower fixed cylinder 2, the pressing platform 1 is provided with a pressing assembly 6, the pressing assembly 6 comprises two hydraulic cylinders 61, one hydraulic cylinder 61 is arranged above the first feeding assembly 4, and the other hydraulic cylinder 61 is arranged below the second feeding assembly 5, and each fixed cylinder 2 is provided with a discharging assembly 24.

[0058] When the magnetic conducting sleeve is pressed and assembled, a plurality of front end sleeves 71 are placed on the first feeding assembly 4, a plurality of fixed rings 72 are placed in the storage cylinder 11, and a plurality of rear end sleeves 73 are placed in the second feeding assembly 5, then the fixed rings 72 in the storage cylinder 11 are clamped and moved to the space between the two fixed cylinders 2 by the clamping assembly 3, then the two hydraulic cylinders 61 are elongated and simultaneously push the front end sleeve 71 and the rear end sleeve 73 to pass through the fixed cylinder 2 and insert into the fixed ring 72, so as to realize the assembly and pressing of the magnetic conducting sleeve of the electromagnetic valve, the clamping assembly 3 continuously clamps the fixed ring 72 between the two fixed cylinders 2, then the hydraulic cylinders 61 continuously press the front end sleeve 71 on the first feeding assembly 4 and the rear end sleeve 73 on the second feeding assembly 5, then the pressed magnetic conducting sleeve is moved out of the fixed cylinder 2 through the discharging assembly 24, so that the pressing of the magnetic conducting sleeve can be continuously carried out, the pressing efficiency of the magnetic conducting sleeve is improved, and the production efficiency of the magnetic conducting sleeve is improved.

[0059] Referring to Figure 1 , Figure 3 and Figure 4The clamping assembly 3 comprises two clamping plates 31 and two clamping hydraulic cylinders 32. Each clamping plate 31 is a "C" shaped plate abutting the fixed ring 72. The fixed ring 72 is located between the two clamping plates 31. The pressing platform 1 is provided with two lifting supports 33. Each lifting support 33 is driven by a hydraulic cylinder 61. The storage cylinder 11 is located between the two lifting supports 33. Each clamping hydraulic cylinder 32 is fixedly arranged on the lifting support 33. The piston rods of the two clamping hydraulic cylinders 32 are oppositely arranged. Each clamping hydraulic cylinder 32 is fixedly provided with a buffer support 34 on the piston rod. Each clamping plate 31 is fixedly provided with a buffer rod 35 on the side away from each other. Each buffer rod 35 is inserted into and slidably arranged in the buffer support 34. Each buffer rod 35 is sleeved with a buffer spring 36. One end of the buffer spring 36 is fixedly connected with the clamping plate 31. The other end of the buffer spring 36 is fixedly connected with the buffer support 34.

[0060] When the fixed ring 72 is fed, the lifting support 33 is driven to extend. The lifting support 33 drives the clamping hydraulic cylinder 32 to move to the discharge port 111 of the storage cylinder 11. Then the clamping hydraulic cylinder 32 is driven to extend. The piston rod of the clamping hydraulic cylinder 32 pushes the clamping plate 31 to extend into the storage cylinder 11 from the discharge port 111 and clamps the fixed ring 72. At this time, the buffer rod 35 slides along the buffer support 34. The clamping plate 31 extrudes the buffer spring 36 to contract, so as to effectively avoid the clamping plate 31 extruding and deforming the fixed ring 72. Then the lifting support 33 is retracted. The fixed ring 72 moves with the lifting support 33 to between the two fixed rings 72, so as to realize feeding of the fixed ring 72. When the magnetic guide sleeve is pressed and assembled, the clamping hydraulic cylinder 32 drives the clamping plate 31 to move away from each other. Then the above operation is repeated to clamp and feed the other fixed ring 72, so as to realize continuous feeding of the fixed ring 72.

[0061] Referring to Figure 1 , Figure 5The first feeding assembly 4 comprises two first conveying mechanisms 41 and two supporting rods 42, each first conveying mechanism 41 is composed of a conveying belt, a motor and a rotating wheel, the two first conveying mechanisms 41 are arranged at intervals, the front end sleeve 71 is vertically inserted between the two first conveying mechanisms 41, the shaft shoulder on the front end sleeve 71 is overlapped on the two first conveying mechanisms 41, the two supporting rods 42 correspond to the two first conveying mechanisms 41 one by one, the two supporting rods 42 are located between the fixed cylinder 2 and the upper hydraulic cylinder 61, four guide rods 43 are fixedly arranged on the pressing platform 1, each supporting rod 42 corresponds to two guide rods 43, each guide rod 43 penetrates through and is slidably arranged on the supporting rod 42, the two guide rods 43 arranged oppositely are away from each other from the side far away from the upper fixed cylinder 2 to the side close to the upper fixed cylinder 2, the supporting spring 44 is sleeved on each supporting rod 42, one end of the supporting spring 44 is fixedly connected with the supporting rod 42, and the other end of the supporting spring 44 is fixedly connected with the guide rod 43.

[0062] With reference to Figure 1 The second feeding assembly 5 comprises a second conveying mechanism 51 and a supporting plate 52, the second conveying mechanism 51 is composed of a conveying belt, a motor and a rotating roller, the supporting plate 52 is located at one end in the rotating direction of the second conveying mechanism 51, the supporting plate 52 is fixedly arranged at the piston rod end of the lower hydraulic cylinder 61, the supporting plate 52 is provided with a groove for inserting the rear end sleeve 73, and the rear end sleeve 73 is vertically placed on the second conveying mechanism 51 one by one.

[0063] When the front end sleeve 71 is fed, the first conveying assembly drives the front end sleeve 71 to move towards the supporting rod 42 through the shaft shoulder of the front end sleeve 71, then the front end sleeve 71 is moved to the supporting rod 42, the hydraulic cylinder 61 is driven to elongate, the hydraulic cylinder 61 extrudes the front end sleeve 71 to move downwards, the supporting rod 42 slides towards the two sides under the guidance of the guide rod 43 while moving downwards with the front end sleeve 71, at this time, the supporting spring 44 is contracted, the supporting rod 42 is separated from the front end sleeve 71 when the front end sleeve 71 is inserted into the fixed cylinder 2, the supporting spring 44 pushes the supporting rod 42 to return to the original position, then the front end sleeve 71 is inserted into the fixed ring 72 under the extrusion of the hydraulic cylinder 61, the fixed cylinder 2 can guide the front end sleeve 71 to be inserted into the fixed ring 72, and the accuracy of the insertion of the front end sleeve 71 is improved.

[0064] When the rear end sleeve 73 is fed, a plurality of rear end sleeves 73 are placed on the second conveying member, then the rear end sleeve is transported to the supporting plate 52 by the second conveying mechanism 51, then the lower hydraulic cylinder 61 is elongated, the rear end sleeve 73 is pushed upwards by the supporting plate 52 and inserted into the fixed ring 72 through the fixed cylinder 2, then the two hydraulic cylinders 61 extrude the front end sleeve 71 and the rear end sleeve 73 into the fixed ring 72, so that the pressing assembly of the magnetic conducting sleeve is realized.

[0065] Referring to Figure 2 , Figure 5 and Figure 6 , each fixed cylinder 2 is composed of an upper arc plate 21 and a lower arc plate 22, the lower arc plate 22 is fixedly arranged on the pressing platform 1, one end of the upper arc plate 21 is rotatably arranged on one end of the lower arc plate 22 through a hinge, the lower arc plate 22 is provided with a discharging groove 23 arranged along the axial direction of the circumferential side wall of the lower arc plate 22, a discharging assembly 24 includes a hard elastic plate 241 fixedly arranged on the upper arc plate 21, the hard elastic plate 241 is located in the discharging groove 23, the hard elastic plate 241 is a "C" type plate with the same bending degree as the lower arc plate 22, the length of the hard elastic plate 241 is greater than 1 / 4 of the circumference of the inner side wall of the fixed cylinder 2 and less than 1 / 2 of the circumference, the hard elastic plate 241 in the embodiment can be an elastic plastic plate, an elastic steel plate, etc., each hydraulic cylinder 61 drives the upper arc plate 21 to rotate through a connecting piece 25, the connecting piece 25 includes a rack 251, a drive gear 252 and a conveying belt 253, the pressing platform 1 is provided with a support frame, one end of the rack 251 is fixedly arranged on the piston rod end of the hydraulic cylinder 61, the support frame is rotatably provided with a driving wheel 254 and a driven wheel 255, the driving wheel 254 and the driven wheel 255 are both horizontally arranged, the conveying belt 253 is wound around the driving wheel 254 and the driven wheel 255 and is taut, the drive gear 252 is coaxially fixedly arranged on the driving wheel 254, the rack 251 is engaged with the drive gear 252, the pressing platform 1 is fixedly provided with a sliding support frame 256, the sliding support frame 256 is slidably provided with a pull rod 257, one end of the pull rod 257 is hingedly connected with a connecting rod 258, the connecting rod 258 is hingedly connected with the upper arc plate 21, the pull rod 257 is fixedly provided with a stop block 259, the stop block 259 is hingedly connected with a turning plate 261 on the side away from the upper arc plate 21, the hinged point of the turning plate 261 and the stop block 259 is located at the edge of the stop block 259 and the middle of the turning plate 261, the conveying belt 253 is provided with a push block 262 for pushing the turning plate 261 to slide, the sliding support frame 256 is provided with a discharging spring 263, one end of the discharging spring 263 is fixedly connected with the pull rod 257, the other end of the discharging spring 263 is fixedly connected with the sliding support frame 256.

[0066] After the hydraulic cylinder 61 finishes pressing the magnetic sleeve, the hydraulic cylinder 61 retracts. The piston rod of the hydraulic cylinder 61 drives the rack 251 to slide, the rack 251 drives the drive gear 252 to rotate, the drive gear 252 drives the drive wheel 254 to rotate, the drive wheel 254 drives the conveyor belt 253 to rotate, the conveyor belt 253 drives the push block 262 to push the rotating plate 261 to slide, one end of the rotating plate 261 is pressed against the stop block 259, the stop block 259 pulls the pull rod 257 to slide. At this time, the unloading spring 263 is compressed, and the pull rod 257 pulls the upper arc plate 21 to rotate through the connecting rod 258, so that the fixed cylinder 2 opens. While the upper arc plate 21 rotates, it drives the rigid elastic plate 241 to squeeze the workpiece in the lower arc plate 22. Initially, the rigid elastic plate 241 produces a certain deformation. Then, when the upper arc plate 21 rotates to a certain arc, the rigid elastic plate 241 pushes the workpiece out of the lower arc plate 22, thereby realizing the unloading of the magnetic sleeve.

[0067] When the magnetic sleeve moves out of the lower arc plate 22, the push block 262 moves to the arc section of the conveyor belt 253. Then, the hydraulic cylinder 61 continues to retract. As the push block 262 slides in the arc section, it disengages from the rotating plate 261. Under the push of the unloading spring 263, the pull rod 257 pushes the upper arc plate 21 to rotate towards the lower arc plate 22, thereby closing the lower arc plate 22 and the upper arc plate 21. When the hydraulic cylinder 61 continues to feed, it extends, and the piston rod end of the hydraulic cylinder 61 drives the rack 251 to slide. At this time, the conveyor belt 253 drives the push block 262 to move towards the upper arc plate 21. When the push block 262 squeezes the rotating plate 261, the rotating plate 261 rotates, allowing the push block 262 to pass over the stop block 259, thus realizing the squeezing and unloading by the hydraulic cylinder 61.

[0068] The implementation principle of the electromagnetic valve magnetic sleeve pressing tool in this application embodiment is as follows: When pressing and assembling the magnetic sleeve, the front sleeve 71 is first placed in the first feeding component 4 in batches, the rear sleeve 73 is placed in the second feeding component 5 in batches, and the fixing ring 72 is placed in the storage cylinder 11 in batches. Then, the clamping component 3 is driven to move the fixing ring 72 out and place it between the two fixing cylinders 2. Then, the extrusion component 6 is started to insert the front sleeve 71 and the rear sleeve 73 into the corresponding fixing cylinders 2 respectively. Then, the extrusion component 6 is driven to insert the front sleeve 71 and the rear sleeve 73 into the fixing ring 72, thereby pressing the three together into a magnetic sleeve. Then, the pressing magnetic sleeve is taken out by the unloading component 24. Then, the above operation is repeated to achieve continuous pressing of the magnetic sleeve, thereby improving the pressing efficiency of the magnetic sleeve and thus improving the production efficiency of the magnetic sleeve.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electromagnetic valve flux guide sleeve press-fit tool, characterized by: The application relates to a pressing platform (1) which is provided with two fixed cylinders (2) with coaxial axes, the two fixed cylinders (2) are arranged in an upper-lower mode, the pressing platform (1) is provided with a storage cylinder (11) for placing a fixed ring (72), the pressing platform (1) is provided with a clamping assembly (3) for moving the fixed ring (72) out of the storage cylinder (11), the clamping assembly (3) is located between the two fixed cylinders (2), the pressing platform (1) is provided with a first feeding assembly (4) for placing a front-end sleeve (71) and a second feeding assembly (5) for placing a rear-end sleeve (73), the two fixed cylinders (2) are each provided with a discharging assembly (24), and the pressing platform (1) is provided with an extruding assembly (6) for driving the front-end sleeve (71) and the rear-end sleeve (73) to approach each other. The first feeding assembly (4) comprises two first conveying mechanisms (41) and two supporting rods (42), the shaft shoulder of the front-end sleeve (71) is overlapped on the two first conveying mechanisms (41), the supporting rods (42) are used for receiving the front-end sleeve (71) on the first conveying mechanisms (41), and the front-end sleeve (71) is located between the two supporting rods (42). The extruding assembly (6) comprises two hydraulic cylinders (61), one of the hydraulic cylinders (61) is located above the supporting rods (42), the pressing platform (1) is provided with guide rods (43) corresponding to the supporting rods (42), the guide rods (43) are located between the supporting rods (42) and the upper fixed cylinder (2), the two guide rods (43) are away from each other from one side of the upper fixed cylinder (2) to the other side, a supporting spring (44) is arranged on each guide rod (43) and used for supporting the supporting rod (42), and the hydraulic cylinders (61) extrude the front-end sleeve (71) so that the front-end sleeve (71) is inserted into the upper fixed cylinder (2).

2. The electromagnetic valve flux guide sleeve press-fit tool of claim 1, wherein: The second feeding assembly (5) comprises a second conveying mechanism (51) and a supporting plate (52), the second conveying mechanism (51) is used for conveying the rear-end sleeve (73) to the supporting plate (52), and the supporting plate (52) is slidably arranged on the pressing platform (1); The other hydraulic cylinder (61) is located below the supporting plate (52), the supporting plate (52) is located at the piston rod end of the hydraulic cylinder (61), and the hydraulic cylinder (61) pushes the supporting plate (52) so that the rear-end sleeve (73) is inserted into the lower fixed cylinder (2).

3. The electromagnetic valve flux guide sleeve press-fit tool of claim 1, wherein: The fixed cylinder (2) is composed of an upper arc plate (21) and a lower arc plate (22), one end of the lower arc plate (22) is rotationally arranged on one end of the upper arc plate (21), and a discharging groove (23) is arranged on the inner side wall of the lower arc plate (22). The discharging assembly (24) comprises a hard elastic plate (241) fixedly arranged on the upper arc plate (21), the hard elastic plate (241) is located in the discharging groove (23), and the hard elastic plate (241) is used for pushing the front end sleeve (71) or the rear end sleeve (73) out of the lower arc plate (22); each hydraulic cylinder (61) is connected with the upper arc plate (21) through a connecting piece (25).

4. The electromagnetic valve flux guide sleeve press-fit tool of claim 3, wherein: The connecting piece (25) comprises a rack (251), a driving gear (252) and a conveying belt (253), the rack (251) is fixedly arranged at the piston rod end of the hydraulic cylinder (61), the pressing platform (1) is rotationally provided with a driving wheel (254) and a driven wheel (255), the driving gear (252) is coaxially arranged on the driving wheel (254), the driving wheel (254) and the driven wheel (255) are connected through the conveying belt (253), the pressing platform (1) is slidably provided with a pull rod (257), the pull rod (257) is hingedly provided with a connecting rod (258), one end of the connecting rod (258) is hingedly connected with the upper arc plate (21), the pull rod (257) is provided with a stop block (259), and the conveying belt (253) is provided with a push block (262) for pushing the stop block (259) to move away from the upper arc plate (21).

5. The electromagnetic valve flux guide sleeve press-fit tool of claim 4, wherein: The pressing platform (1) is provided with a discharging spring (263) for pushing the pull rod (257) to slide towards the upper arc plate (21), the stop block (259) is hingedly provided with a rotating plate (261) at an end away from the upper arc plate (21), the push block (262) extrudes the rotating plate (261) away from the upper arc plate (21) to make the stop block (259) slide, and the push block (262) extrudes the rotating plate (261) towards the upper arc plate (21) to make the rotating plate (261) rotate.

6. The electromagnetic valve flux guide sleeve press-fit tool of claim 1, wherein: The clamping assembly (3) comprises two clamping plates (31) abutting against a fixed ring (72) and two clamping hydraulic cylinders (32), the pressing platform (1) is provided with two lifting supports (33), the lifting supports (33) correspond to the clamping hydraulic cylinders (32) in one-to-one correspondence, the clamping hydraulic cylinders (32) are connected with the lifting supports (33), the clamping plates (31) are arranged at the piston rod ends of the clamping hydraulic cylinders (32), and the fixed ring (72) is located between the two clamping plates (31).

7. The electromagnetic valve flux guide sleeve press-fit tool of claim 6, wherein: The clamping plate (31) is provided with a buffer rod (35), the piston rod end of the clamping hydraulic cylinder (32) is provided with a buffer support (34), the buffer rod (35) is inserted into and slidably arranged in the buffer support (34), a buffer spring (36) is sleeved on the buffer rod (35), one end of the buffer spring (36) is connected with the clamping plate (31), and the other end of the buffer spring (36) is connected with the buffer support (34).

8. A solenoid valve flux guide tube production process using the solenoid valve flux guide tube pressing tool of claim 1, characterized by: It comprises the following steps: S1: surface treatment and cleaning treatment are carried out on the front-end sleeve (71), the fixing ring (72) and the rear-end sleeve (73); S2: the front-end sleeve is placed into a jig through an automatic assembly line, then the fixing ring (72) and the rear-end sleeve (73) are sequentially placed into the jig, and assembly and pressing are carried out by using a pressing tool, so that the three parts are sequentially assembled together; S3: the parts after pressing are detected by using an automatic detection device to check whether the pressing is in place; S4: the pressed sleeve assembly is placed on a tool with brazing filler metal, and the brazing filler metal is placed; S5: the part filled with the brazing filler metal is transplanted to a heat treatment rack and is sent into a vacuum brazing furnace to carry out welding; S6: detection is carried out after welding.

9. The electromagnetic valve flux guide sleeve production process of claim 8, wherein: In step S4, the brazing filler metal adopts copper-based brazing filler metal, the preheating temperature is 550-600 DEG C, and the brazing temperature is 980-1100 DEG C; In step S5, the processed workpiece is placed in the heating cavity of the brazing furnace, 800-1000 workpieces are processed in each furnace, and the door of the furnace is closed. Before brazing, the vacuum system of the brazing furnace is started, the air in the furnace is discharged to a vacuum state, then the heating system is started, the workpiece is heated to the preheating temperature with the furnace, and the temperature is kept for 6-12 minutes. Then the furnace continues to heat to the brazing temperature, and the heating is stopped after keeping the temperature for 10-20 minutes. The quick cooling program is started to reduce the temperature in the furnace, the temperature in the furnace is reduced to the demagnetization temperature, and the temperature is kept for 6-12 minutes. Finally, the temperature in the furnace is cooled to the discharge temperature, and the discharge temperature is controlled at the indoor temperature of 35 DEG C.

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