A sintering device for metal parts of a wheelchair

Abstract

The present invention relates to the field of metal sintering, and in particular to a sintering device for metal parts of a wheelchair. Technical problem: When low-temperature gas is introduced, it is easy to cause various parts of the metal parts to be heated unevenly. The technical solution is as follows: A sintering device for metal parts of a wheelchair, including a furnace body, etc.; also including a back plate and a placement plate, etc.; a back plate is fixedly connected to the left side of the furnace body; the back plate is provided with a plurality of rectangular grooves; the back plate is fixedly connected to a plurality of placement plates for placing metal parts, and the number and position of the placement plates correspond to the rectangular grooves, and the placement plates are hollow. The present invention limits the low-temperature gas by a limiting plate, so that the low-temperature gas is blocked by the limiting plate and then gradually diffuses into the furnace body, so that the metal parts are evenly cooled, and the low-temperature gas is prevented from blowing directly to the surface of the metal parts, resulting in rapid cooling of the part facing the first circular hole, while other parts have not yet been cooled, and the uneven temperature leads to a decrease in the quality of the metal parts.

Description

Technical Field

[0001] The invention relates to the field of metal sintering, and in particular to a sintering device for metal parts of a wheelchair. Background Art

[0002] In order to reduce the storage space, the current wheelchair structure is mainly of folding design. Since the user sits in the wheelchair for a long time, the movable joints of the wheelchair are subjected to greater torque. Therefore, the movable joints of the wheelchair are usually composed of metal parts, and compared with ordinary metal parts, the movable joints of the wheelchair have higher performance requirements for metal parts.

[0003] In the prior art, when sending metal parts into a vacuum sintering furnace for sintering, low-temperature gas is usually introduced into the sintering furnace for a period of time to form an atmosphere field to improve the sintering efficiency of the metal parts. Since there are many impurities on the inner wall of the sintering furnace, when low-temperature gas is introduced into the furnace, the impurities on the inner wall of the furnace are easily blown onto the metal parts, and various parts of the metal parts are easily heated unevenly, resulting in a decrease in the performance of the metal parts after forming. Moreover, the impurities blown onto the surface of the metal parts cannot be removed, and will be fixed on the surface of the metal parts after complete sintering, affecting the structure and precision of the metal parts, and further affecting the assembly into movable joints.

[0004] When the metal part is placed on the sintering plate, the gas cannot enter the contact area between the metal part and the sintering plate, so the low-temperature gas cannot cover the entire metal part, affecting the sintering efficiency and further causing the performance of the metal part to deteriorate after forming.

[0005] At the same time, during sintering, a layer of oxide scale will fall off the surface of the metal parts due to the high temperature. When workers take out the metal parts, the fallen oxide scale will be blown up, causing the oxide scale debris to fill the entire sintering furnace and affect the next sintering. Summary of the invention

[0006] In order to overcome the disadvantages that when low-temperature gas is introduced, different parts of the metal parts are easily heated unevenly, the gas cannot cover the entire metal parts, and the oxide scale that falls off will be lifted up when the metal parts are taken out, the present invention provides a sintering device for wheelchair metal parts.

[0007] The technical scheme is as follows: a sintering device for metal parts of a wheelchair, comprising a furnace body and a furnace door; the furnace door is rotatably connected to the right side of the furnace body; it also comprises a rear plate, a placement plate, a cover plate, an inner cylinder, a filter screen, a spring body, a limit plate, an outer cylinder and a power assembly; the rear plate is fixedly connected to the left side of the furnace body; the rear plate is provided with a plurality of rectangular grooves; the rear plate is fixedly connected with a plurality of placement plates for placing metal parts, and the number and position of the placement plates correspond to the rectangular grooves, and the placement plates are hollow; a plurality of annular holes are provided on the upper side of each placement plate; each placement plate is connected with a suction pipe, and the suction pipe is fixedly connected to the rear plate; the rear plate A plurality of cover plates are movably connected, and the number and position of the cover plates correspond to the rectangular grooves; an inner cylinder is fixedly connected in the furnace body; a plurality of first circular holes are opened in the inner cylinder; a filter screen is fixedly connected to each first circular hole; a plurality of spring bodies are fixedly connected to each first circular hole; all spring bodies located on the same first circular hole are commonly fixedly connected to a limit plate; an outer cylinder is rotatably connected in the furnace body, and the outer cylinder is located outside the inner cylinder; a plurality of second circular holes are opened in the outer cylinder, and the number and position of the second circular holes correspond to the first circular holes; a power assembly for driving the outer cylinder to rotate is connected to the rear plate, and the power assembly is connected to the outer cylinder.

[0008] Optionally, it also includes a toggle assembly; the toggle assembly includes an annular guide rail, a first moving block, a connecting rod, and a first spring rod; the furnace body is fixedly connected to two annular guide rails distributed on the left and right; each annular guide rail is slidably connected to a first moving block; the two first moving blocks are commonly fixedly connected to a connecting rod; the connecting rod is fixedly connected to a plurality of first spring rods.

[0009] Optionally, the telescopic end of the first spring rod is configured in a conical shape.

[0010] Optionally, a lifting component is also included; the lifting component includes a first push rod, a rectangular bar, a first rack, a supporting ring, a connecting block, a supporting rod, a rotating shaft, a first gear and a first rope; a plurality of first push rods are fixedly connected to the rear plate, and every two first push rods correspond to a row of annular holes; a rectangular bar is fixedly connected to the telescopic end of each first push rod, and the rectangular bar is slidably connected to the rear plate, and the rear plate is slidably connected to the placement plate; a plurality of first racks are fixedly connected to one side of each rectangular bar close to the annular hole; a plurality of supporting rings are fixedly connected to the upper side of the placement plate, and the position and number of the supporting rings correspond to the annular holes; a plurality of notches are opened on the upper side of the supporting ring ; Several connecting blocks are fixedly connected to the outside of the supporting ring, and the positions and number of the connecting blocks correspond to the notches; each connecting block is rotatably connected to a supporting rod for lifting the metal part, and a torsion spring is provided between the supporting rod and the connecting block; the front and rear sides of each annular hole are rotatably connected to two rotating shafts; the two rotating shafts located on the same annular hole are each wrapped together with a first rope, the first rope is slidably connected to all the supporting rods on the corresponding supporting ring toward one end of the outer ring surface of the supporting ring, and the first rope is made of high temperature resistant material; each rotating shaft is fixedly connected to a first gear, and the number and position of the first gear correspond to the first rack.

[0011] Optionally, it also includes a cleaning component; the cleaning component includes a second push rod, a mounting plate, a linear guide rail, a second moving block, a hollow tube, a connecting tube, a second spring rod, an air jet tube, a hose, a second motor, a rotating rod and a second rope; a plurality of pairs of second push rods are fixedly connected to the left side of the furnace body; the telescopic ends of each pair of second push rods are each commonly fixedly connected to a mounting plate, and the number and position of the mounting plates correspond to the placement plate; a linear guide rail is respectively fixedly connected to the front and rear sides of each mounting plate; each linear guide rail is each slidably connected to a second moving block; the two second moving blocks on each mounting plate are commonly fixedly connected to a hollow tube, and a torsion spring is provided between the hollow tube and the second moving block; each hollow tube is connected to a plurality of connecting tubes, and the connecting tubes are connected to a plurality of connecting tubes. The number and position of the connecting pipes correspond to the annular holes; each connecting pipe is fixedly connected to two second spring rods distributed front and back; the telescopic ends of the two second spring rods located in the same connecting pipe are respectively fixedly connected to a jet pipe for blowing off the oxide scale on the metal parts; each connecting pipe is connected to two hoses, and the two hoses located in the same connecting pipe are respectively connected to the corresponding jet pipe; one of the second moving blocks on each mounting plate is respectively fixedly connected to a second motor; the output shaft of each second motor is respectively fixedly connected to a rotating rod, and the rotating rod is located in the corresponding hollow tube; each rotating rod is respectively wrapped with a plurality of pairs of second ropes, and the number and position of the second ropes correspond to the connecting pipes, and the second ropes pass through the hollow tube and are fixedly connected to the jet pipe.

[0012] Optionally, the cleaning component also includes scraping needles; each air jet pipe is fixedly connected with a plurality of scraping needles.

[0013] Optionally, the cleaning component further includes limiting balls; a plurality of groups of limiting balls are fixedly connected to the lower side of each hollow tube, and the position of each group of limiting balls corresponds to the jet tube.

[0014] Optionally, the cleaning assembly also includes a second gear, a third push rod, a push plate and a second rack; a second gear is fixedly connected to the front end of each hollow tube; a number of third push rods are fixedly connected to the front side of each mounting plate; the telescopic ends of a number of third push rods located on the same mounting plate are each commonly fixedly connected to a push plate; and a number of second racks are fixedly connected to each push plate.

[0015] Optionally, the cleaning assembly also includes a collection box, a suction pipe and a rotating plate; each mounting plate is fixedly connected to a number of collection boxes, and every two collection boxes are located on the front and rear sides of a row of annular holes; each collection box is connected to a number of suction pipes; each collection box is rotatably connected to a number of rotating plates on one side close to the annular hole, and a torsion spring is provided between the rotating plate and the collection box.

[0016] Optionally, the cleaning component also includes hanging spikes; each rotating plate is fixed with a plurality of hanging spikes for hanging small oxide scale fragments.

[0017] The present invention has the following advantages: the present invention limits the low-temperature gas through the limiting plate, so that the low-temperature gas is blocked by the limiting plate and then gradually diffuses into the furnace body, so that the metal parts are evenly cooled, and the low-temperature gas is prevented from directly blowing onto the surface of the metal parts, resulting in rapid cooling of the part facing the first circular hole, while other parts have not yet been cooled, and the uneven temperature leads to a decrease in the quality of the metal parts.

[0018] The present invention controls the extension of the first push rod so that the rectangular bar drives the first rack to move rightward, the first rack drives the first gear to rotate, the first gear drives the rotating shaft to rotate, so that the rotating shaft reels the first rope, and the first rope moves into the supporting ring, so that the first rope drives the supporting rod to move downward away from one end of the supporting ring, so that the first rope drives the supporting rod to rotate upward on the connecting block, so that the supporting rod lifts the metal part upward, so that the metal part is separated from the supporting rod, so that the low-temperature gas can contact the lower side of the metal part, further improving the contact efficiency between the low-temperature gas and the metal part.

[0019] The present invention controls the linear guide rail to make the second moving block drive the connected component to move rightward. When the hollow tube approaches the metal workpiece, the external air pump is controlled to start, and the gas enters the air jet pipe through the hollow tube, the connecting pipe and the hose, so that the air jet pipe blows off the oxide scale attached to the metal workpiece. At this time, the scraper scrapes the outer wall of the metal workpiece to scrape off the fine oxide scale debris attached to the outer wall of the metal workpiece. At the same time, the scraper arranged obliquely downward blocks the blown-off oxide scale to prevent the blown-off oxide scale debris from being lifted up.

[0020] The metal parts produced by the present invention can meet higher performance requirements and ensure their structure and precision, so that the composed movable joints can be used in wheelchairs to ensure a smooth folding effect, and the structural stability of the wheelchair can be ensured when the user is riding, and the wheelchair will not fall apart, thereby improving the safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure disclosed by the sintering device of the wheelchair metal parts of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the sintering device for the wheelchair metal parts disclosed in the present invention;

[0023] Figure 3 A schematic diagram of the combined structure of the furnace body, the rear plate, the placement plate, the inner cylinder, the outer cylinder and the toggle assembly disclosed in the sintering device for the metal parts of the wheelchair of the present invention;

[0024] Figure 4 It is a schematic diagram of the combined partial structure of the inner cylinder, the outer cylinder and the toggle assembly disclosed in the sintering device for the metal parts of the wheelchair of the present invention;

[0025] Figure 5 A sectional view of the combined local structure of the inner cylinder and the filter screen disclosed in the sintering device for the metal parts of the wheelchair of the present invention;

[0026] Figure 6 It is a schematic diagram of the combined partial structure of the inner cylinder and the filter screen disclosed in the sintering device of the wheelchair metal parts of the present invention;

[0027] Figure 7 A schematic diagram of the combined partial structure of the rear plate, inner cylinder, outer cylinder, rolling ring, first motor and roller disclosed in the sintering device for the metal parts of the wheelchair of the present invention;

[0028] Figure 8 A schematic diagram of the combined partial structure of the rear plate, the placement plate and the supporting assembly disclosed in the sintering device for the metal parts of the wheelchair of the present invention;

[0029] Fig. 9 It is a schematic diagram of the combined partial structure of the placement plate and the holding assembly disclosed in the sintering device for the metal parts of the wheelchair of the present invention;

[0030] Fig.10 A schematic diagram of a partial structure of a lifting assembly disclosed in the sintering device for a wheelchair metal part of the present invention;

[0031] Fig.11 A schematic diagram of the combined structure of a furnace body, a rear plate and a cleaning assembly disclosed in the sintering device for a wheelchair metal part of the present invention;

[0032] Fig.12 A schematic diagram of a partial structure of a first combination of a placement plate and a cleaning assembly disclosed in a sintering device for a metal wheelchair component of the present invention;

[0033] Fig.13 A schematic diagram of a partial structure of a second combination of a placement plate and a cleaning assembly disclosed in the sintering device for a wheelchair metal part of the present invention;

[0034] Fig.14 A schematic diagram of a first partial structure of a cleaning assembly disclosed in the sintering device for a wheelchair metal part of the present invention;

[0035] Fig.15 A schematic diagram of a second partial structure of a cleaning assembly disclosed in the sintering device for a wheelchair metal part of the present invention;

[0036] Fig.16 A third partial structural schematic diagram of the cleaning assembly disclosed in the sintering device for the metal parts of the wheelchair of the present invention.

[0037] Markings in the accompanying drawings: 1-furnace body, 2-furnace door, 3-rear plate, 4-placing plate, 5-metal parts, 6-cover plate, 11-inner cylinder, 12-filter screen, 13-spring body, 14-limiting plate, 15-outer cylinder, 16-rolling ring, 17-first motor, 18-roller, 21-annular guide rail, 22-first moving block, 23-connecting rod, 24-first spring rod, 101-first push rod, 102-rectangular bar, 103-first rack, 104-supporting ring, 105-connecting block, 106-supporting rod, 107-rotating shaft, 108-first gear, 109-first rope, 201-second push rod, 202-mounting plate, 203 -linear guide rail, 204-second moving block, 205-hollow tube, 206-second gear, 207-connecting tube, 208-second spring rod, 209-jet tube, 2010-scraping needle, 2011-hose, 2012-second motor, 2013-rotating rod, 2014-second rope, 2015-limiting ball, 2016-third push rod, 2017-push plate, 2018-second rack, 2019-collecting box, 2020-suction tube, 2021-rotating plate, 2022-hanging thorn, 3a-rectangular groove, 4a-annular hole, 4b-suction tube, 11a-first circular hole, 15a-second circular hole, 104a-notch. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0039] Example 1

[0040] A sintering device for wheelchair metal parts, such as Figure 1-16 As shown, it includes a furnace body 1 and a furnace door 2; the furnace body 1 is rotatably connected to the furnace door 2 on the right side;

[0041] It also includes a rear plate 3, a placement plate 4, a cover plate 6, an inner tube 11, a filter screen 12, a spring body 13, a limit plate 14, an outer tube 15 and a power assembly; the rear plate 3 is fixedly connected to the left side of the furnace body 1; the rear plate 3 is provided with a plurality of rectangular grooves 3a; the rear plate 3 is fixedly connected to two placement plates 4 for placing metal parts 5, and the number and position of the placement plates 4 correspond to the rectangular grooves 3a, and the placement plates 4 are hollow; each placement plate 4 has a plurality of annular holes 4a on the upper side; each placement plate 4 is connected to a suction pipe 4b, and the suction pipe 4b is fixedly connected to the rear plate 3; the rear plate 3 is hinged with a plurality of cover plates 6, and the number and position of the cover plates 6 correspond to the rectangular grooves 3a An inner cylinder 11 is fixedly connected to the furnace body 1; a plurality of first circular holes 11a are provided in the inner cylinder 11; a filter screen 12 is fixedly connected to each first circular hole 11a; four spring bodies 13 are fixedly connected to each first circular hole 11a; all spring bodies 13 located on the same first circular hole 11a are fixedly connected to a limit plate 14; an outer cylinder 15 is rotatably connected to the furnace body 1, and the outer cylinder 15 is located outside the inner cylinder 11; a plurality of second circular holes 15a are provided in the outer cylinder 15, and the number and positions of the second circular holes 15a correspond to the first circular holes 11a; a power assembly for driving the outer cylinder 15 to rotate is connected to the rear plate 3, and the power assembly is connected to the outer cylinder 15.

[0042] The power assembly includes a rolling ring 16, a first motor 17, and a roller 18; the outer cylinder 15 is fixedly connected to the rolling ring 16; the rear plate 3 is bolted to two first motors 17; the output shafts of the two first motors 17 are each fixedly connected to a roller 18, and the roller 18 is transmission-connected to the rolling ring 16.

[0043] It also includes a toggle assembly; the toggle assembly includes an annular guide rail 21, a first moving block 22, a connecting rod 23, and a first spring rod 24; the furnace body 1 is bolted to two annular guide rails 21 distributed on the left and right; each annular guide rail 21 is slidably connected to a first moving block 22; the two first moving blocks 22 are commonly fixedly connected to a connecting rod 23; the connecting rod 23 is fixedly connected to a plurality of first spring rods 24.

[0044] The telescopic end of the first spring rod 24 is conical, so that when the first spring rod 24 rotates outside the outer cylinder 15, the telescopic end of the first spring rod 24 enters the second circular hole 15a, and then continues to rotate to allow the telescopic end of the first spring rod 24 to pass over the second circular hole 15a.

[0045] The working steps of the above embodiment are as follows: when in use, first connect the external gas pump to the space between the inner wall of the furnace body 1 and the outer wall of the outer tube 15, then open the furnace door 2, place the metal part 5 on the annular hole 4a of the placement plate 4, then close the furnace door 2 and the cover plate 6, when the metal part 5 is sintered in the furnace body 1, the first circular hole 11a and the second circular hole 15a are staggered to prevent impurities from entering through the first circular hole 11a and the second circular hole 15a during sintering and affecting the gas introduction. When it is necessary to introduce low-temperature gas into the furnace body 1, control the first motor 17 to start, and the output shaft of the first motor 17 drives the roller 18 to rotate, the roller 18 drives the rolling ring 16 to rotate, and the rolling ring 16 drives the outer tube 15 to rotate, thereby making the first circular hole 11a a and the second circular hole 15a are aligned, then, the external gas pump is controlled to start, and the low-temperature gas is passed between the inner wall of the furnace body 1 and the outer wall of the outer tube 15, and the low-temperature gas enters the furnace body 1 through the second circular hole 15a, the first circular hole 11a and the filter 12, so that the low-temperature gas is evenly filled with the entire furnace body 1, and the filter 12 blocks the impurities in the furnace body 1 to prevent the impurities from sticking to and clogging the first circular hole 11a. In this process, the limiting plate 14 limits the low-temperature gas, so that the low-temperature gas is blocked by the limiting plate 14 and then gradually diffuses into the furnace body 1, so that the metal part 5 is evenly cooled, and the gas is prevented from being directly blown to the surface of the metal part 5, resulting in rapid cooling of the part facing the first circular hole 11a, while other parts have not yet been cooled, and the uneven temperature causes the quality of the metal part 5 to decline.

[0046] During this process, some impurities will adhere to the filter screen 12. At this time, the annular guide rail 21 is controlled to make the first moving block 22 drive the connecting rod 23 and the first spring rod 24 to rotate, so that when the first spring rod 24 passes through the first circular hole 11a and the second circular hole 15a, Figure 5 As shown, the telescopic end of the first spring rod 24 is disengaged from the limit of the outer cylinder 15 and pops out, so that the telescopic end of the first spring rod 24 squeezes the limit plate 14, and the limit plate 14 squeezes the filter 12 to push away the impurities on the filter 12. At this time, the spring body 13 is in a stretched state. As the first spring rod 24 continues to rotate, when the first spring rod 24 is disengaged from the second circular hole 15a, the limit plate 14 moves back and forth under the elastic force of the spring body 13, so that the limit plate 14 reciprocates to vibrate the filter 12 to shake off the impurities on the filter 12.

[0047] Example 2

[0048] On the basis of Example 1, Figure 8-10As shown, it also includes a lifting assembly; the lifting assembly includes a first push rod 101, a rectangular bar 102, a first rack 103, a supporting ring 104, a connecting block 105, a supporting rod 106, a rotating shaft 107, a first gear 108 and a first rope 109; the rear plate 3 is bolted with a plurality of first push rods 101, and every two first push rods 101 correspond to a row of annular holes 4a; each telescopic end of each first push rod 101 is fixedly connected with a rectangular bar 102, and the rectangular bar 102 is slidably connected to the rear plate 3, and the rear plate 3 is slidably connected to the placement plate 4; a plurality of first racks 103 are fixedly connected to one side of each rectangular bar 102 near the annular hole 4a; a plurality of supporting rings 104 are fixedly connected to the upper side of the placement plate 4, and the position and number of the supporting rings 104 correspond to the annular hole 4a; a plurality of notches 104a are opened on the upper side of the supporting ring 104; a plurality of connecting blocks 105 are fixedly connected to the outer side of the supporting ring 104, and the position and number of the connecting blocks 105 correspond to the notches 104a; each connecting block 105 is rotatably connected to a The supporting rod 106 is lifted up by the member 5, and a torsion spring is arranged between the supporting rod 106 and the connecting block 105; the front and rear sides of each annular hole 4a are rotatably connected to two rotating shafts 107; the two rotating shafts 107 located on the same annular hole 4a are each wound with a first rope 109, and the first rope 109 is slidably connected with one end of all the supporting rods 106 on the corresponding supporting ring 104 toward the outer ring surface of the supporting ring 104, and the first rope 109 is made of high temperature resistant material; each rotating shaft 107 is fixed with a first Gear 108, and the number and position of the first gear 108 correspond to the first rack 103; the first rope 109 is wound up by the rotating shaft 107, so that the first rope 109 shrinks into the supporting ring 104, and the first rope 109 moves into the supporting ring 104, so that the first rope 109 drives the supporting rod 106 to move downward away from one end of the supporting ring 104, so that the first rope 109 drives the supporting rod 106 to rotate upward on the connecting block 105, so that the supporting rod 106 pushes the metal part 5 upward.

[0049] The working steps of the above embodiment are as follows: when the metal part 5 is sintered, the metal part 5 is placed on the supporting ring 104. When the low-temperature gas is introduced into the furnace body 1, the metal part 5 is lifted up by the supporting ring 104, so as to reduce the contact area between the metal part 5 and the placing plate 4 and improve the contact efficiency between the low-temperature gas and the metal part 5. At this time, after the low-temperature gas enters the inner wall of the annular metal part 5, it flows out through the notch 104a, so as to improve the circulation efficiency of the low-temperature gas on the metal part 5. However, since there is still a contact surface between the supporting ring 104 and the metal part 5, the low-temperature gas cannot enter the contact area between the supporting ring 104 and the metal part 5. At this time, the elongation of the first push rod 101 is controlled so that the rectangular bar 102 drives the first rack 103 to move rightward, the first rack 103 drives the first gear 108 to rotate, and the first gear 108 drives the rotating shaft 107 to rotate, so that the rotating shaft 107 contacts the first rack 103 of the high-temperature resistant material. A rope 109 is wound up, and as a part of the first rope 109 is wound up, the circumference of the rope loop formed by the first rope 109 slidably connected to the supporting rod 106 is reduced, and then the diameter of the rope loop formed by the first rope 109 is reduced, so that the first rope 109 contracts into the supporting ring 104, and the first rope 109 moves into the supporting ring 104, so that the first rope 109 drives the supporting rod 106 to move downward away from the end of the supporting ring 104, and because the torsion force of the torsion spring provided between the supporting rod 106 and the connecting block 105 is consistent, the first rope 109 drives the supporting rod 106 to rotate upward on the connecting block 105 like a lever, so that all the supporting rods 106 jointly push the metal part 5 upward, so that the metal part 5 is separated from the supporting rod 106, so that the low-temperature gas can contact the lower side of the metal part 5, further improving the contact efficiency between the low-temperature gas and the metal part 5.

[0050] Example 3

[0051] On the basis of Example 2, Figure 11-16As shown, a cleaning assembly is also included; the cleaning assembly includes a second push rod 201, a mounting plate 202, a linear guide rail 203, a second moving block 204, a hollow tube 205, a connecting tube 207, a second spring rod 208, an air jet tube 209, a hose 2011, a second motor 2012, a rotating rod 2013 and a second rope 2014; a plurality of pairs of second push rods 201 are bolted to the left side of the furnace body 1; each pair of the telescopic ends of the second push rods 201 are fixedly connected to a mounting plate 202, and the number and position of the mounting plates 202 are the same as The mounting plate 4 corresponds to each other; each mounting plate 202 has a linear guide rail 203 connected to the front and rear sides by bolts; each linear guide rail 203 is slidably connected to a second moving block 204; the two second moving blocks 204 on each mounting plate 202 are fixedly connected to a hollow tube 205, and a torsion spring is provided between the hollow tube 205 and the second moving block 204; each hollow tube 205 is connected to a plurality of connecting tubes 207, and the number and position of the connecting tubes 207 correspond to the annular hole 4a; each connecting tube 207 is fixedly connected to two front The second spring rods 208 are arranged at the rear; the telescopic ends of the two second spring rods 208 located in the same connecting pipe 207 are each fixedly connected with a jet pipe 209 for blowing off the oxide scale on the metal part 5; each connecting pipe 207 is connected with two hoses 2011, and the two hoses 2011 located in the same connecting pipe 207 are connected with the corresponding jet pipe 209; one of the second moving blocks 204 on each mounting plate 202 is bolted with a second motor 2012; the output shaft of each second motor 2012 is fixedly connected with a second motor 2012; A rotating rod 2013 is connected, and the rotating rod 2013 is located in the corresponding hollow tube 205; each rotating rod 2013 is wrapped with a plurality of pairs of second ropes 2014, and the number and position of the second ropes 2014 correspond to the connecting tube 207, and the second ropes 2014 pass through the hollow tube 205 and are fixedly connected to the jet pipe 209; by controlling the start of the external air pump, the gas enters the jet pipe 209 through the hollow tube 205, the connecting tube 207 and the hose 2011, so that the jet pipe 209 blows off the oxide scale attached to the metal part 5.

[0052] The cleaning assembly also includes scraping needles 2010; each air jet pipe 209 is fixedly connected with a plurality of scraping needles 2010 arranged obliquely downward.

[0053] The cleaning assembly also includes limiting balls 2015 ; a plurality of groups of limiting balls 2015 are fixedly connected to the lower side of each hollow tube 205 , and the position of each group of limiting balls 2015 corresponds to the injection tube 209 .

[0054] The cleaning assembly also includes a second gear 206, a third push rod 2016, a push plate 2017 and a second rack 2018; a second gear 206 is fixedly connected to the front end of each hollow tube 205; a plurality of third push rods 2016 are bolted to the front side of each mounting plate 202; the telescopic ends of a plurality of third push rods 2016 located on the same mounting plate 202 are each commonly fixedly connected to a push plate 2017; and a plurality of second racks 2018 are fixedly connected to each push plate 2017.

[0055] The cleaning assembly also includes a collecting box 2019, a suction pipe 2020 and a rotating plate 2021; each mounting plate 202 is fixedly connected to a plurality of collecting boxes 2019, and every two collecting boxes 2019 are located at the front and rear sides of a row of annular holes 4a; each collecting box 2019 is connected to a plurality of suction pipes 2020; each collecting box 2019 is rotatably connected to a plurality of rotating plates 2021 on one side close to the annular hole 4a, and a torsion spring is provided between the rotating plate 2021 and the collecting box 2019.

[0056] The cleaning assembly also includes spikes 2022; each rotating plate 2021 is fixed with a plurality of spikes 2022 for hanging small oxide scale fragments.

[0057] The working steps of the above embodiment are as follows: firstly, the external suction pump is connected to the suction pipe 4b, the external air delivery pump is connected to the hollow pipe 205, and the external air extraction pump is connected to the suction pipe 2020. After the metal part 5 is sintered, the temperature in the furnace body 1 is lowered to a predetermined temperature, and the cover plate 6 is opened upwards. Then, the second push rod 201 is controlled to extend so that the mounting plate 202 drives the connected parts to move to the right, until the mounting plate 202 passes through the rectangular groove 3a and is aligned with the placement plate 4. Then, the linear guide rail 203 is controlled to drive the second moving block 204 to move to the right. The connected component moves to the right. When the hollow tube 205 is close to the metal part 5, the external air pump is controlled to start. The gas enters the jet pipe 209 through the hollow tube 205, the connecting pipe 207 and the hose 2011, so that the jet pipe 209 blows off the oxide scale attached to the metal part 5. At this time, the scraper needle 2010 scrapes the outer wall of the metal part 5 to scrape off the fine oxide scale debris attached to the metal part 5. At the same time, the scraper needle 2010 set obliquely downward blocks the blown-off oxide scale to prevent the blown-off oxide scale debris from being lifted up.

[0058] At the same time, the external vacuum pump is controlled to start and the suction pipe 2020 is evacuated, so that the air pressure in the collection box 2019 is lower than the air pressure outside the collection box 2019, so that the rotating plate 2021 rotates to an inclined state to the side away from the metal part 5 under the action of the external atmospheric pressure, so that the box mouth of the collection box 2019 is opened, and the oxide scale blown off by the jet pipe 209 is sucked into the collection box 2019. In this process, when the larger oxide scale is sucked into the collection box 2019, it will collide with the inclined rotating plate 2021, causing the oxide scale to break into fine debris. At this time, the fine oxide scale debris is hung by the thorns 2022 to prevent the debris from flying into the furnace body 1. When the suction pipe 2020 stops evacuating, the rotating plate 2021 rotates to the initial position under the action of the torsion spring, so that the box mouth of the collection box 2019 is closed.

[0059] As the second moving block 204 continues to move to the right, since the metal part 5 is in a circular shape, at this time, the second motor 2012 is controlled to start, and the rotating rod 2013 is rotated through the output shaft of the second motor 2012, and the rotating rod 2013 drives the second rope 2014 to be released, so that the jet pipe 209 and the scraper needle 2010 move to the side away from the connecting pipe 207 under the action of the second spring rod 208, so that the jet pipe 209 and the scraper needle 2010 move in contact with the outer wall of the circular metal part 5 to remove the oxide scale on the outer wall of the metal part 5. During the movement of the jet pipe 209 and the scraper needle 2010, after the jet pipe 209 touches the limiting ball 2015, it moves up and down under the limiting action of the limiting ball 2015, so that the jet pipe 209 drives the scraper needle 2010 to poke the outer wall of the metal part 5 up and down reciprocatingly, thereby improving the efficiency of scraping off the oxide scale debris.

[0060] After the oxide debris on the outer wall of the metal part 5 is removed, the second moving block 204 and the parts connected to it are located on the right side of the placement plate 4. Then, the third push rod 2016 is controlled to extend so that the push plate 2017 drives the second rack 2018 to move backward until the second rack 2018 is directly below the second gear 206. Then, the linear guide 203 is controlled to make the second moving block 204 drive the parts connected to it to move to the left. When the hollow tube 205 moves close to the metal part 5, the second gear 206 drives the hollow tube 205 and the parts connected to it to rotate on the second rack 2018 until the jet pipe 209 and the scraper needle 2010 enter the annular metal part 5, so that the jet pipe 209 and the scraper needle 2010 remove the oxide on the inner wall of the metal part 5. At the same time, the external suction pump is controlled to start and the oxide scraped off the inner wall of the metal part 5 is sucked away through the annular hole 4a on the placement plate 4.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sintering device for wheelchair metal parts, comprising a furnace body (1) and a furnace door (2); the furnace body (1) is rotatably connected to the furnace door (2) on the right side; the characteristics are: The furnace body (1) further comprises a rear plate (3), a placement plate (4), a cover plate (6), an inner tube (11), a filter screen (12), a spring body (13), a limit plate (14), an outer tube (15) and a power assembly; the left side of the furnace body (1) is fixedly connected with the rear plate (3); the rear plate (3) is provided with a plurality of rectangular grooves (3a); the rear plate (3) is fixedly connected with a plurality of placement plates (4) for placing metal parts (5), and the number and position of the placement plates (4) correspond to the rectangular grooves (3a), and the placement plates (4) are hollow; each placement plate (4) is provided with a plurality of annular holes (4a) on the upper side; each placement plate (4) is connected with a suction pipe (4b), and the suction pipe (4b) is fixedly connected to the rear plate (3); the rear plate (3) is movably connected with a plurality of cover plates (6), and the number and position of the cover plates (6) correspond to the rectangular grooves (3a). The furnace body (1) is provided with an inner cylinder (11); the inner cylinder (11) is provided with a plurality of first circular holes (11a); each first circular hole (11a) is provided with a filter screen (12); each first circular hole (11a) is provided with a plurality of spring bodies (13); all spring bodies (13) located on the same first circular hole (11a) are provided with a common stop plate (14); an outer cylinder (15) is rotatably connected to the furnace body (1), and the outer cylinder (15) is located outside the inner cylinder (11); the outer cylinder (15) is provided with a plurality of second circular holes (15a), and the number and position of the second circular holes (15a) correspond to the first circular holes (11a); the rear plate (3) is provided with a power assembly for driving the outer cylinder (15) to rotate, and the power assembly is connected to the outer cylinder (15); It also includes a toggle assembly; the toggle assembly includes an annular guide rail (21), a first moving block (22), a connecting rod (23), and a first spring rod (24); the furnace body (1) is fixedly connected to two annular guide rails (21) distributed on the left and right; each annular guide rail (21) is slidably connected to a first moving block (22); the two first moving blocks (22) are commonly fixedly connected to a connecting rod (23); the connecting rod (23) is fixedly connected to a plurality of first spring rods (24); The telescopic end of the first spring rod (24) is arranged in a conical shape; The lifting assembly also includes a first push rod (101), a rectangular bar (102), a first rack (103), a supporting ring (104), a connecting block (105), a supporting rod (106), a rotating shaft (107), a first gear (108) and a first rope (109); the rear plate (3) is fixedly connected to a plurality of first push rods (101), and every two first push rods (101) correspond to a row of annular holes (4a); each first push rod (101) is retractable. Each end is fixedly connected to a rectangular bar (102), and the rectangular bar (102) is slidably connected to the rear plate (3), and the rear plate (3) is slidably connected to the placement plate (4); a plurality of first racks (103) are fixedly connected to one side of each rectangular bar (102) close to the annular hole (4a); a plurality of supporting rings (104) are fixedly connected to the upper side of the placement plate (4), and the positions and numbers of the supporting rings (104) correspond to the annular holes (4a); a plurality of notches are provided on the upper side of the supporting rings (104) (104a); a plurality of connecting blocks (105) are fixedly connected to the outside of the supporting ring (104), and the position and number of the connecting blocks (105) correspond to the notch (104a); each connecting block (105) is rotatably connected to a supporting rod (106) for lifting the metal part (5), and a torsion spring is provided between the supporting rod (106) and the connecting block (105); the front and rear sides of each annular hole (4a) are rotatably connected to two rotating shafts (107); The two rotating shafts (107) on the shaped hole (4a) are each commonly wound with a first rope (109), the first rope (109) is slidably connected to all the supporting rods (106) on the corresponding supporting ring (104) at one end facing the outer ring surface of the supporting ring (104), and the first rope (109) is made of high temperature resistant material; each rotating shaft (107) is fixedly connected to a first gear (108), and the number and position of the first gears (108) correspond to the first racks (103).

2. A sintering device for a wheelchair metal part according to claim 1, characterized in that: The furnace body (1) also includes a cleaning assembly; the cleaning assembly includes a second push rod (201), a mounting plate (202), a linear guide rail (203), a second moving block (204), a hollow tube (205), a connecting tube (207), a second spring rod (208), an air jet tube (209), a hose (2011), a second motor (2012), a rotating rod (2013) and a second rope (2014); a plurality of pairs of second push rods (201) are fixedly connected to the left side of the furnace body (1); the telescopic ends of each pair of second push rods (201) are each commonly fixedly connected to a mounting plate (20 2), and the number and position of the mounting plates (202) correspond to the placement plates (4); each mounting plate (202) is fixedly connected to a linear guide rail (203) on the front and rear sides; each linear guide rail (203) is slidably connected to a second moving block (204); the two second moving blocks (204) on each mounting plate (202) are commonly fixedly connected to a hollow tube (205), and a torsion spring is provided between the hollow tube (205) and the second moving block (204); each hollow tube (205) is connected to a plurality of connecting tubes (207), and the connecting tubes (207) are connected to the second moving blocks (204); The number and position of the tubes (207) correspond to the annular holes (4a); each connecting tube (207) is fixedly connected to two second spring rods (208) distributed front and rear; the telescopic ends of the two second spring rods (208) located on the same connecting tube (207) are each fixedly connected to an air jet pipe (209) for blowing off the oxide scale on the metal part (5); each connecting tube (207) is connected to two hoses (211), and the two hoses (211) located on the same connecting tube (207) are each connected to the corresponding air jet pipe (209); each One of the second moving blocks (204) on the mounting plate (202) is fixedly connected to a second motor (2012); the output shaft of each second motor (2012) is fixedly connected to a rotating rod (2013), and the rotating rod (2013) is located in the corresponding hollow tube (205); each rotating rod (2013) is wound with a plurality of pairs of second ropes (2014), and the number and position of the second ropes (2014) correspond to the connecting tube (207), and the second ropes (2014) pass through the hollow tube (205) and are fixedly connected to the jet tube (209).

3. A sintering device for a wheelchair metal part according to claim 2, characterized in that: The cleaning component also includes scraping needles (2010); each air jet pipe (209) is fixedly connected with a plurality of scraping needles (2010).

4. A sintering device for a wheelchair metal part according to claim 3, characterized in that: The cleaning assembly also includes a limiting ball (2015); a plurality of groups of limiting balls (2015) are fixedly connected to the lower side of each hollow tube (205), and the position of each group of limiting balls (2015) corresponds to the jet tube (209).

5. A sintering device for a wheelchair metal part according to claim 4, characterized in that: The cleaning assembly also includes a second gear (206), a third push rod (2016), a push plate (2017) and a second rack (2018); a second gear (206) is fixedly connected to the front end of each hollow tube (205); a plurality of third push rods (2016) are fixedly connected to the front side of each mounting plate (202); the telescopic ends of a plurality of third push rods (2016) located on the same mounting plate (202) are each fixedly connected to a push plate (217); and a plurality of second racks (2018) are fixedly connected to each push plate (2017).

6. A sintering device for a wheelchair metal part according to claim 5, characterized in that: The cleaning assembly also includes a collection box (2019), a suction pipe (2020) and a rotating plate (2021); each mounting plate (202) is fixedly connected to a plurality of collection boxes (2019), and every two collection boxes (2019) are located at the front and rear sides of a row of annular holes (4a); each collection box (2019) is connected to a plurality of suction pipes (2020); a side of each collection box (2019) close to the annular hole (4a) is rotatably connected to a plurality of rotating plates (2021), and a torsion spring is provided between the rotating plate (2021) and the collection box (2019).

7. The sintering device for a wheelchair metal part according to claim 6, characterized in that: The cleaning component also includes hanging spikes (2022); each rotating plate (2021) is fixedly connected with a plurality of hanging spikes (2022) for hanging small oxide scale fragments.

Images