Binder removing device for metal injection molding

Abstract

The invention discloses a binder removal device for metal injection molding, relates to the technical field of metal injection molding, and aims to solve the technical problem that the binder removal device for metal powder injection molding is uneven in heating when used for removing a binder from a columnar workpiece, the binder removal device comprises a degreasing furnace body, and a rack is arranged in the degreasing furnace body in a sliding manner; a planetary rotating mechanism is arranged at the head end of the rack, and a placing mechanism is arranged at the tail end of the rack. According to the invention, the planetary rotating mechanism is arranged to drive the plurality of placing mechanisms to rotate, so that when the columnar workpieces subjected to metal powder injection molding are subjected to binder removal, the positions of all the columnar workpieces are changed along with the movement of the placing mechanisms, the uniform heating of the columnar workpieces is facilitated, and the technical field of metal injection molding is solved; the technical problem that heating is uneven when a columnar workpiece is subjected to binder removal through a binder removal device for metal powder injection molding is solved.

Description

Technical Field

[0001] The invention relates to the technical field of metal injection molding, and more particularly to a binder removal device for metal injection molding. Background Art

[0002] The basic principle of metal powder injection molding technology is to mix metal powder with an organic binder (also called sintering agent, adhesive) to form a uniform mixture, and then use an injection molding machine to inject the mixture into the mold cavity under heated plasticization to solidify and form it. Thereafter, the binder is removed by chemical solvents or thermal decomposition, and finally the final product is obtained by sintering and densification. There are many types of workpieces for metal powder injection molding, including columnar workpieces such as studs.

[0003] The binder removal device for metal injection molding by heating and decomposition includes a degreasing furnace. The existing degreasing furnace includes a degreasing furnace body. A placement mechanism is slidably provided inside the degreasing furnace body. When the binder is removed from a columnar workpiece after metal powder injection molding, the workpiece to be degreased is placed on the placement mechanism and pushed into the degreasing furnace, and the furnace door is closed. The heating temperature and heating time of the degreasing furnace are set, and the heating system is started. During the heating process, the binder will gradually undergo a pyrolysis reaction to generate small gas molecules. These small gas molecules will be transmitted to the surface of the blank by diffusion or penetration, and will be separated from the surface of the blank into the external atmosphere. The exhaust system of the degreasing furnace will discharge the generated harmful gases and residues out of the furnace to keep the environment inside the furnace clean and stable.

[0004] However, the placement mechanism on the existing degreasing furnace includes a frame that can slide with the inner cavity of the degreasing furnace, and a plurality of placement plates are arranged on the frame. The columnar workpiece after metal powder injection molding is placed on the placement plate. When the columnar workpiece is heated to decompose the binder, the columnar workpiece located at different positions is heated unevenly, which will affect the binder removal effect of the columnar workpiece. In view of this, we propose a binder removal device for metal injection molding. Summary of the invention

[0005] The object of the present invention is to provide a binder removal device for metal injection molding to solve the technical problem of uneven heating when the binder removal device for metal powder injection molding removes the binder from a columnar workpiece.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a binder removal device for metal injection molding, comprising a degreasing furnace body, a frame is slidably arranged in the degreasing furnace body, a planetary rotating mechanism is arranged at the head end of the frame, and a placement mechanism is arranged at the tail end of the frame; The planetary rotating mechanism comprises a mounting block and a motor, wherein the mounting block is fixedly mounted at the head end of the frame, a circular groove is formed at the tail end of the mounting block, a circular plate A is rotatably mounted at the head end of the circular groove, an inner gear ring A is fixedly mounted at the tail end of the circular groove, a sun gear is disposed at the center of the circular plate A, the sun gear is rotatably connected to the circular plate A via a connecting rod A, the head end of the connecting rod A passes through the circular plate A, the mounting block and the head end of the frame in sequence and is fixedly connected to the output shaft of the motor, the motor is fixedly connected to the frame, and the sun gear is meshedly connected to the inner gear ring A via a plurality of planetary assemblies arranged in an annular equidistant structure; The placement mechanism includes two circular plates B, and the two circular plates B are fixed with a rotating ring A at one end relatively far away, one of the rotating rings A is rotatably connected to the tail end of the mounting circular block, and the other rotating ring A is rotatably connected to the tail end of the frame. A plurality of placement components are provided in a ring-shaped and equidistant structure in the gaps between the mounting circular blocks at both ends, and the number of the plurality of placement components is equal to the number of the plurality of planetary components. The two ends of the placement components are rotatably connected to the two circular plates B respectively, and the head end of the placement component passes through the circular plate B at the head end and is connected to the planetary component. The present invention drives a plurality of placement mechanisms to rotate and rotate by setting a planetary rotating mechanism, so that when the binder is removed from the columnar workpiece after metal powder injection molding, all the columnar workpieces change position with the movement of the placement mechanism, which is conducive to uniform heating of the columnar workpieces, and solves the technical problem of metal injection molding technology, and aims to solve the technical problem of uneven heating of the binder removal device of metal powder injection molding when removing the binder from the columnar workpiece.

[0007] Preferably, the planetary assembly includes a planetary gear ring, both ends of which are respectively meshed with the inner gear ring A and the sun gear, the planetary gear ring is rotatably connected to the circular plate A via a swivel ring B, an inner gear ring B is fixedly provided on the inner edge surface of the planetary gear ring, a center gear is provided inside the planetary gear ring, the center gear is rotatably connected to the circular plate A via a connecting rod B, the center gear is meshed with the inner gear ring B via at least one side gear, and the side gear is rotatably connected to the circular plate A via a connecting rod C.

[0008] Preferably, the placement assembly includes two rotating plates, and the two rotating plates are respectively rotatably arranged on the two circular plates B. The head end of the rotating plate located at the head end passes through the circular plate B and is fixedly connected to the planetary gear ring. A worm is arranged in the gap between the two rotating plates. The two ends of the worm are respectively rotatably connected to the two rotating plates. The head end of the worm passes through the rotating plate located at the head end and is fixedly connected to the center gear. The two rotating plates are fixedly connected by a number of arc plates arranged in a ring-shaped equidistant structure. Any two adjacent gaps between the arc plates constitute an installation cavity. A number of placement units are arranged in a linear equidistant structure on the installation cavity, and the several placement units are all meshed with the worm.

[0009] Preferably, the placement unit includes a connecting shaft, both ends of the connecting shaft are fixedly connected to both ends of the installation cavity, two partial worm gears are rotatably connected to the connecting shaft, both of the partial worm gears are meshingly connected to the worm, and both of the partial worm gears are fixed with installation rings relatively close to one end, and a plurality of placement modules are provided in a ring-shaped equidistant structure in the gap between the two partial worm gears, and both ends of the placement module are plug-in-matched with the two installation rings through plug-in modules.

[0010] Preferably, the mounting ring is provided with a plurality of plug-in slots A in a circular shape with equal intervals, the number of the plug-in slots A is equal to the number of the placement modules, a plug-in slot B is provided at the bottom of the plug-in slot A, a column is fixedly provided in the plug-in slot B, a slide rod is fixedly provided at the top of the column, a truncated cone block A is fixedly provided at the top of the slide rod, a truncated cone block B is sleeved on the slide rod, the truncated cone block A and the truncated cone block B are arranged in a symmetrical structure, two slide grooves A are symmetrically provided on both sides of the plug-in slot A, an arc block is slidably connected to the slide groove A, a plurality of hole grooves are provided on the slide groove A, and the arc block and the corresponding plurality of hole grooves are elastically connected by a spring A.

[0011] Preferably, the placement module includes two fan-shaped plates, both ends of the fan-shaped plates are respectively in contact with two corresponding arc blocks, the two fan-shaped plates are fixedly connected by a plurality of connecting blocks arranged in a circular equidistant structure, a plurality of slide grooves B are provided in a circular equidistant structure on the inner side of the fan-shaped plate, a clamping block is slidably connected in the slide groove B, and the clamping block is elastically connected to the slide groove B through a spring B.

[0012] Preferably, a plurality of movable grooves are provided on the outer side of the fan-shaped plate relative to the positions of the plurality of slide grooves B, an arc groove is provided in the movable groove, the movable groove is communicated with the arc groove, a movable plate is slidably connected in the arc groove, the movable plate and the arc groove are elastically connected by a spring C, the spring C is vortex-shaped, a guide plate is fixed on the movable plate, the guide plate is movably connected to the movable groove, and the guide plate is a trapezoidal structure.

[0013] Preferably, the plug-in module includes a plug-in column, which is fixed on the inner edge surface of the fan-shaped plate, and a guide fillet is provided at the bottom end of the plug-in column. The plug-in column is plugged into and matched with the plug-in slot B. A ring block A is fixed on the top of the plug-in column, and a ring block B is sleeved on the bottom of the plug-in column. The ring block A and the ring block B are elastically connected by a spring D, and the ring block B is movably matched with the plug-in slot A. A circular hole is provided at the bottom end of the plug-in column, and slide grooves C are provided on both sides of the bottom end of the circular hole. A slider is slidably connected to the slide groove C, and the slider is elastically connected to the slide groove C by a spring E. A trapezoidal block is fixed on the slider, and the trapezoidal block passes through the slide groove C and movably cooperates with the truncated cone block A, and the trapezoidal block is movably matched with the truncated cone block B.

[0014] Preferably, a rotating block is fixedly provided at the middle of the coupling shaft, and a plurality of protrusions are provided on the circumference of the rotating block in an annular structure with equal spacing, and a groove is provided between any two adjacent protrusions.

[0015] A method for using a binder removal device for metal injection molding comprises the following steps: S1: placing the columnar workpiece after metal powder injection molding on the placement module, that is, inserting the columnar workpiece from the inner side of the fan-shaped plate into the clamping cavity formed by the gap between the clamping blocks, so that the end of the columnar workpiece contacts the inclined end of the guide plate, and placing all the columnar workpieces on several placement modules in the same way as the above steps; S2: Placement module installation; S2.1: Pick up the placement module, insert the plug-in column into the plug-in slot B, so that the bottom end of the ring block B contacts the bottom end of the plug-in slot A, and the slider enters the gap between the truncated cone block A and the truncated cone block B. Under the elastic force of the spring D, the ring block A provides elastic force for the plug-in column and the placement module, and at this time, the two corresponding arc blocks contact the two ends of the fan-shaped plate at both ends, and further provide elastic force for the placement module under the elastic force of the spring A, so that the placement module is installed; all the placement modules that can be installed on the installable placement mechanism are installed in the same way as the above steps; S2.2: Adjustment of the placement module shape; if all the placement modules that can be installed on the installed placement mechanism are installed and there are still placement modules that have not been installed, the output shaft of the motor is rotated by external control, so that the sun gear drives the planetary gear ring to perform planetary revolution along the inner gear ring A, so that the circular plate A and the circular plate B rotate, and the planetary gear ring rotates relative to the circular plate A, so that the planetary gear ring drives the central gear to rotate through the side gear, and the central gear and the side gear rotate differentially, so that the placement mechanism rotates as a whole, and the rotating plate and the worm rotate differentially, and the rotation of the worm drives part of the worm gear to rotate relative to the connecting shaft, so that the position of each placement module on the placement assembly changes, and the placement module is installed in the same way as step S2.1, and the above operation is continued until all the placement modules for placing columnar workpieces are installed; S3: removing the binder from the columnar workpiece after metal powder injection molding; Push the rack into the debinding furnace body, close the furnace door, set the heating temperature and heating time of the debinding furnace body, and control the motor output shaft to rotate through the external control mechanism, so that the placement mechanism repeats the motion state of S2.2, so that all columnar workpieces are heated evenly and the binder removal effect is improved. Under the elastic force of spring C, the end of the columnar workpiece continues to contact with the protrusion or groove. At the same time, during the rotation of part of the worm gear relative to the connecting shaft, the placement module rotates relative to the rotating block, so that the columnar workpiece moves back and forth in the clamping cavity formed by the two clamping blocks, so that the clamped parts of the columnar workpiece can be heated in turn, further improving the uniformity of heating of the columnar workpiece; S4: Disassembly of the placement module and the columnar workpiece. When the binder of the columnar workpiece is removed, open the furnace door, pull out the rack, press the placement module to make the fan-shaped plate and the plug-in column continue to rise, and the trapezoidal block and the frustum block A are separated. At this time, the plug-in module can be directly taken out, and the S2.2 step is repeated to take out all the placement modules, and then the columnar workpiece can be taken out of the placement module.

[0016] The beneficial effects of the present invention are: 1. The present invention sets a planetary rotating mechanism to drive a plurality of placement mechanisms to rotate and self-rotate, so that when the binder is removed from the columnar workpiece after metal powder injection molding, all the columnar workpieces change position with the movement of the placement mechanism, which is beneficial to the uniform heating of the columnar workpieces, and solves the technical problem of uneven heating of the binder removal device of metal powder injection molding when removing the binder from the columnar workpiece.

[0017] 2. The present invention also realizes structural design of the planetary assembly and the placement assembly, so that the output shaft of the motor is externally controlled to rotate, so that the sun gear drives the planetary gear ring to perform planetary revolution along the inner gear ring A, so that the circular plate A and the circular plate B rotate, and the planetary gear ring rotates relative to the circular plate A, so that the planetary gear ring drives the center gear to rotate through the side gear, and the center gear and the side gear rotate differentially, so that the placement mechanism rotates as a whole, and the rotating plate and the worm rotate differentially. The rotation of the worm drives part of the worm gear to rotate relative to the connecting shaft, so that the position of each placement module on the placement assembly changes, which is further beneficial to the uniform heating of the columnar workpiece and the binder removal effect, thereby further solving the technical problem of uneven heating of the binder removal device of the metal powder injection molding when removing the binder from the columnar workpiece.

[0018] 3. The present invention also designs the placement module and the rotating block. Under the elastic force of the spring C, the end of the columnar workpiece is continuously in contact with the protrusion or the groove. At the same time, when the part of the worm gear rotates relative to the connecting shaft, the placement module rotates relative to the rotating block, so that the columnar workpiece moves back and forth in the clamping cavity formed by the two clamping blocks, so that the clamped parts of the columnar workpiece can be heated in turn, further improving the uniformity of heating of the columnar workpiece, thereby achieving a good binder removal effect, and further solving the technical problem of uneven heating of the binder removal device of metal powder injection molding when removing the binder from the columnar workpiece.

[0019] 4. The present invention has a structural design for the plug-in module, so that when installing the placement module, only one press is needed, and when removing the placement module, only one press is needed, so that the placement module is easy to load and unload. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the frame, planetary rotating mechanism, placement mechanism and placement assembly of the present invention.

[0022] Figure 3 It is a schematic diagram of the disassembled structure of the frame, planetary rotating mechanism, placement mechanism and placement assembly of the present invention.

[0023] Figure 4 It is a schematic diagram of the disassembled structure of the planetary rotating mechanism of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the planetary assembly of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the placement mechanism of the present invention.

[0026] Figure 7 It is a structural schematic diagram of the placement component of the present invention.

[0027] Figure 8 It is a schematic structural diagram of the worm and the placement unit of the present invention.

[0028] Fig. 9 It is a schematic diagram of the split structure of the placement unit in the use state of the present invention.

[0029] Fig.10 It is a schematic structural diagram of a part of the worm gear and the mounting ring of the present invention.

[0030] Fig.11 It is a schematic diagram of the cross-sectional structure of the mounting ring of the present invention.

[0031] Fig.12It is a schematic cross-sectional structure diagram of the placement module in the use state of the present invention.

[0032] Fig.13 It is a schematic cross-sectional structure diagram of the mounting ring, placement module and plug-in module of the present invention.

[0033] Fig.14 for Fig.13 A schematic diagram of the enlarged structure of .

[0034] Fig.15 It is a schematic diagram of the structure of the coupling shaft, rotating block, protrusion and groove of the present invention.

[0035] Fig.16 It is a schematic cross-sectional structure diagram of the placement unit of the present invention.

[0036] Description of the numbers in the figure: 1. Degreasing furnace body; 2. Frame; 3. Planetary rotating mechanism; 4. Placement mechanism; 5. Placement components; 31. Installation round block; 32. Round groove; 33. Round plate A; 34. Internal gear ring A; 35. Sun gear; 36. Connecting rod A; 37. Motor; 38. Planetary assembly; 381, planetary gear ring; 382, ​​rotating ring B; 383, inner gear ring B; 384, central gear; 385, connecting rod B; 386, side gear; 387, connecting rod C; 41. Circular plate B; 42. Swivel A; 51. Rotating plate; 52. Worm; 53. Arc plate; 54. Placement unit; 541, coupling shaft; 542, part of worm gear; 543, mounting ring; 544, placement module; 545, plug-in module; 5411, rotating block; 5412, protrusion; 5413, groove; 5430, spring A; 5431, plug-in slot A; 5432, plug-in slot B; 5433, column; 5434, slide bar; 5435, round table block A; 5436, round table block B; 5437, slide slot A; 5438, arc block; 5439, hole slot; 5440, connecting block; 5441, fan-shaped plate; 5442, slide groove B; 5443, clamping block; 5444, spring B; 5445, movable groove; 5446, arc groove; 5447, movable plate; 5448, spring C; 5449, guide plate; 5450, trapezoidal block; 5451, plug-in column; 5452, guide fillet; 5453, ring block A; 5454, ring block B; 5455, spring D; 5456, round hole; 5457, slide groove C; 5458, slider; 5459, spring E. DETAILED DESCRIPTION

[0037] like Figures 1 to 16 As shown, the present invention relates to a binder removal device for metal injection molding. In order to solve the above technical problems, the present invention provides the following technical solutions: A binder removal device for metal injection molding comprises a degreasing furnace body 1, a frame 2 is slidably arranged in the degreasing furnace body 1, a planetary rotating mechanism 3 is arranged at the head end of the frame 2, and the planetary rotating mechanism 3 comprises a mounting block 31 and a motor 37. The mounting block 31 is fixedly arranged at the head end of the frame 2, and a circular groove 32 is opened at the tail end of the mounting block 31. The circular groove 3 A circular plate A33 is rotatably provided at the head end of the circular groove 32, an inner gear ring A34 is fixedly provided at the tail end of the circular groove 32, a sun gear 35 is provided at the center of the circular plate A33, and the sun gear 35 is rotatably connected to the circular plate A33 through a connecting rod A36, the head end of the connecting rod A36 passes through the circular plate A33, the mounting block 31 and the head end of the frame 2 in sequence and is fixedly connected to the output shaft of the motor 37, the motor 37 is fixedly connected to the frame 2, and the sun gear 35 is meshedly connected to the inner gear ring A34 through a plurality of planetary assemblies 38 arranged in an annular equidistant structure; A placement mechanism 4 is arranged at the rear end of the frame 2. The placement mechanism 4 includes two circular plates B41. The two circular plates B41 are fixed with a rotating ring A42 at one end relatively far away. One of the rotating rings A42 is rotatably connected to the rear end of the mounting circular block 31, and the other rotating ring A42 is rotatably connected to the rear end of the frame 2. A plurality of placement components 5 are arranged in a ring-shaped and equidistant structure in the gaps between the mounting circular blocks 31 at both ends. The number of the plurality of placement components 5 is equal to the number of the plurality of planetary components 38. The two ends of the placement components 5 are rotatably connected to the two circular plates B41 respectively. The head end of the placement component 5 passes through the circular plate B41 at the head end and is connected to the planetary component 38. Through the above arrangement, the present invention allows the output shaft of the externally controlled motor 37 to rotate, so that the sun gear 35 drives the planetary component 38 to perform a planetary revolution along the inner gear ring A34, so that the circular plate A33 and the circular plate B41 rotate, and the planetary gear ring 381 rotates relative to the circular plate A33, and the placement component 5 performs a planetary revolution.

[0038] In an embodiment of the present invention, the planetary assembly 38 includes a planetary gear ring 381, the two ends of the planetary gear ring 381 are respectively meshed with the inner gear ring A34 and the sun gear 35, the planetary gear ring 381 is rotatably connected to the circular plate A33 through a swivel ring B382, an inner gear ring B383 is fixed on the inner edge surface of the planetary gear ring 381, a center gear 384 is provided in the planetary gear ring 381, the center gear 384 is rotatably connected to the circular plate A33 through a connecting rod B385, the center gear 384 is meshed with the inner gear ring B383 through at least one side gear 386, and the side gear 386 is rotatably connected to the circular plate A33 through a connecting rod C387. The present invention, through the structural design of the planetary assembly 38, makes the output shaft of the external control motor 37 rotate, so that the sun gear 35 drives the planetary gear ring 381 to perform planetary revolution along the inner gear ring A34, so that the circular plate A33 and the circular plate B41 rotate, and the planetary gear ring 381 rotates relative to the circular plate A33, so that the planetary gear ring 381 drives the center gear 384 to rotate through the side gear 386, and the center gear 384 and the side gear 386 rotate differentially.

[0039] In the embodiment of the present invention, the placement assembly 5 includes two rotating plates 51, the two rotating plates 51 are rotatably arranged on two circular plates B41 respectively, the head end of the rotating plate 51 at the head end passes through the circular plate B41 and is fixedly connected to the planetary gear ring 381, a worm 52 is arranged in the gap between the two rotating plates 51, the two ends of the worm 52 are rotatably connected to the two rotating plates 51 respectively, the head end of the worm 52 passes through the rotating plate 51 at the head end and is fixedly connected to the central gear 384, the two rotating plates 51 are fixedly connected through a plurality of arc plates 53 arranged in an annular equidistant structure, any two adjacent arc plates 53 gaps constitute an installation cavity, a plurality of placement units 54 are arranged in a linear equidistant structure on the installation cavity, and the plurality of placement units 54 are meshed and connected with the worm 52. This embodiment makes the circular plate B41 rotate with the rotation of the planetary gear ring 381, and the worm 52 rotates with the central gear 384 through the above arrangement.

[0040] In the embodiment of the present invention, the placement unit 54 includes a connecting shaft 541, both ends of the connecting shaft 541 are fixedly connected to both ends of the installation cavity, two partial worm wheels 542 are rotatably connected to the connecting shaft 541, both partial worm wheels 542 are meshed and connected with the worm 52, both partial worm wheels 542 are fixedly provided with a mounting ring 543 at one end relatively close to each other, and a plurality of placement modules 544 are provided in a ring-shaped and equidistant structure in the gap between the two partial worm wheels 542, and both ends of the placement modules 544 are plugged and matched with the two mounting rings 543 through plug-in modules 545. Through the above arrangement, the present invention enables that when the rotating plate 51 and the worm 52 rotate differentially, the rotation of the worm 52 drives the partial worm wheel 542 to rotate relative to the connecting shaft 541, so that the position of each placement module 544 on the placement assembly 5 changes.

[0041] In an embodiment of the present invention, a plurality of plug-in slots A5431 are provided in a circular shape with equal intervals on the mounting ring 543, the number of the plurality of plug-in slots A5431 is equal to the number of the plurality of placement modules 544, a plug-in slot B5432 is provided at the bottom of the plug-in slot A5431, a column 5433 is fixedly provided in the plug-in slot B5432, a slide bar 5434 is fixedly provided at the top of the column 5433, a frustum block A5435 is fixedly provided at the top of the slide bar 5434, a frustum block B5436 is sleeved on the slide bar 5434, the frustum block A5435 and the frustum block B5436 are arranged in a symmetrical structure, two slide grooves A5437 are symmetrically provided on both sides of the plug-in slot A5431, an arc block 5438 is slidably connected to the slide groove A5437, a plurality of hole grooves 5439 are provided on the slide groove A5437, and the arc block 5438 and the corresponding plurality of hole grooves 5439 are elastically connected by a spring A5430.

[0042] In the embodiment of the present invention, the placement module 544 includes two fan-shaped plates 5441, and the two ends of the fan-shaped plates 5441 are respectively in contact with two corresponding arc blocks 5438. The two fan-shaped plates 5441 are fixedly connected by a plurality of connecting blocks 5440 arranged in an annular equidistant structure. The inner side of the fan-shaped plates 5441 is provided with a plurality of slide grooves B5442 in an annular equidistant structure. A clamping block 5443 is slidably connected in the slide groove B5442. The clamping block 5443 is elastically connected to the slide groove B5442 through a spring B5444. The present invention clamps the columnar workpiece formed by metal powder injection molding by the clamping block 5443 formed by the two clamping blocks 5443.

[0043] In the embodiment of the present invention, the plug-in module 545 includes a plug-in column 5451, which is fixed on the inner edge of the fan-shaped plate 5441. The bottom of the plug-in column 5451 is provided with a guide fillet 5452. The plug-in column 5451 is plugged into the plug-in slot B5432. A ring block A5453 is fixed on the top of the plug-in column 5451. A ring block B5454 is sleeved on the bottom of the plug-in column 5451. The ring block A5453 is elastically connected to the ring block B5454 through a spring D5455. The ring block B5454 is connected to the plug-in slot B5432. The groove A5431 is movably fitted, a circular hole 5456 is provided at the bottom of the plug-in column 5451, and sliding grooves C5457 are provided on both sides of the bottom of the circular hole 5456. A slider 5458 is slidably connected to the sliding groove C5457. The slider 5458 and the sliding groove C5457 are elastically connected by a spring E5459. A trapezoidal block 5450 is fixed on the slider 5458. The trapezoidal block 5450 passes through the sliding groove C5457 and is movably fitted with the frustum block A5435. The trapezoidal block 5450 is movably fitted with the frustum block B5436. Through the above arrangement, the present invention makes it possible that when the plug-in column 5451 is plugged into the plug-in groove B5432, the trapezoidal block 5450 is subjected to the reaction force of the truncated cone block A5435, causing the slider 5458 to slide along the slide groove C5457, causing the slider 5458 to enter the gap between the truncated cone block A5435 and the truncated cone block B5436. Under the elastic force of the spring D5455, the ring block A5453 provides elastic force for the plug-in column 5451 and the placement module 544. At this time, the two corresponding arc blocks 5438 are in contact with both ends of the fan-shaped plate 5441, and further provide elastic force for the placement module 544 under the elastic force of the spring A5430, so that the placement module 544 is installed. All the placement modules 544 that can be installed on the installable placement mechanism 4 are installed in the same way as the above steps. When it is necessary to install the plug-in column 5451 When plugging into the plug-in slot B5432, press the fan-shaped plate 5441 so that the plug-in column 5451 continues to be inserted into the plug-in slot B5432, and the trapezoidal block 5450 is subjected to the reaction force of the truncated cone block B5436, causing the slider 5458 to slide along the slide groove C5457, causing the trapezoidal block 5450 to move to the bottom end of the truncated cone block B5436. At this time, let go. Under the elastic force of the spring D5455 and the spring A5430, the fan-shaped plate 5441 and the plug-in column 5451 rise, and the rise of the trapezoidal block 5450 drives the truncated cone block B5436 to rise along the slide rod 5434, so that the truncated cone block B5436 contacts with the truncated cone block A5435 to form a guide structure. As the fan-shaped plate 5441 and the plug-in column 5451 continue to rise, the trapezoidal block 5450 is separated from the truncated cone block A5435, and the plug-in module 545 can be directly taken out.

[0044] In the embodiment of the present invention, a plurality of movable grooves 5445 are provided on the outer side of the sector plate 5441 at positions corresponding to the plurality of slide grooves B5442, an arc groove 5446 is provided in the movable groove 5445, the movable groove 5445 is communicated with the arc groove 5446, a movable plate 5447 is slidably connected in the arc groove 5446, the movable plate 5447 is elastically connected with the arc groove 5446 through a spring C5448, the spring C5448 is vortex-shaped, a guide plate 5449 is fixed on the movable plate 5447, the guide plate 5449 is movably connected with the movable groove 5445, and the guide plate 5449 is a trapezoidal structure; A rotating block 5411 is fixedly arranged in the middle of the connecting shaft 541, and a plurality of protrusions 5412 are arranged in an annular structure with equal spacing on the circumference of the rotating block 5411, and a groove 5413 is arranged between any two adjacent protrusions 5412. Through the above arrangement, the present invention allows the placement module 544 to rotate relative to the rotating block 5411 during the rotation of the part of the worm gear 542 relative to the connecting shaft 541, so that the columnar workpiece moves back and forth in the clamping cavity formed by the two clamping blocks 5443, so that the clamped parts of the columnar workpiece can be heated in turn, further improving the uniformity of heating of the columnar workpiece.

[0045] A method for using a binder removal device for metal injection molding comprises the following steps: S1: Place the columnar workpiece after metal powder injection molding on the placement module 544, that is, insert the columnar workpiece from the inner side of the fan-shaped plate 5441 into the clamping cavity formed by the gap of the clamping block 5443, so that the end of the columnar workpiece contacts the inclined end of the guide plate 5449, and place all the columnar workpieces on several placement modules 544 in the same way as above; S2: Installation of placement module 544; S2.1: Pick up the placement module 544, insert the plug-in column 5451 into the plug-in slot B5432, so that the bottom end of the ring block B5454 contacts the bottom end of the plug-in slot A5431, so that the slider 5458 enters the gap between the truncated cone block A5435 and the truncated cone block B5436, and under the elastic force of the spring D5455, the ring block A5453 provides elastic force for the plug-in column 5451 and the placement module 544, and at this time, the two corresponding arc blocks 5438 contact the two ends of the fan-shaped plate 5441 at both ends, and further provide elastic force for the placement module 544 under the elastic force of the spring A5430, so that the placement module 544 is installed; all the placement modules 544 that can be installed on the installable placement mechanism 4 are installed in the same way as the above steps; S2.2: Adjustment of the shape of the placement module 544; if all the placement modules 544 that can be installed on the placement mechanism 4 are installed and there are still placement modules 544 that have not been installed, the output shaft of the motor 37 is rotated by external control, so that the sun gear 35 drives the planetary gear ring 381 to perform planetary revolution along the inner gear ring A34, so that the circular plate A33 and the circular plate B41 rotate, and the planetary gear ring 381 rotates relative to the circular plate A33, so that the planetary gear ring 381 drives the central gear 384 to rotate through the side gear 386, and the central gear 384 and the side gear 386 rotate differentially, so that the placement mechanism 4 rotates as a whole, and the rotating plate 51 and the worm 52 rotate differentially, the rotation of the worm 52 drives part of the worm gear 542 to rotate relative to the connecting shaft 541, so that the position of each placement module 544 on the placement component 5 changes, and the placement module 544 is installed continuously in the same way as step S2.1, and the above operation is continued until all the placement modules 544 for placing columnar workpieces are installed; S3: removing the binder from the columnar workpiece after metal powder injection molding; Push the frame 2 into the debinding furnace body 1, close the furnace door, set the heating temperature and heating time of the debinding furnace body 1, and control the rotation of the output shaft of the motor 37 through the external control mechanism, so that the placement mechanism 4 repeats the motion state of S2.2, so that all the columnar workpieces are heated more evenly and the binder removal effect is improved. Under the elastic force of the spring C5448, the end of the columnar workpiece is continuously in contact with the protrusion 5412 or the groove 5413. At the same time, during the rotation of part of the worm gear 542 relative to the connecting shaft 541, the placement module 544 rotates relative to the rotating block 5411, so that the columnar workpiece moves back and forth in the clamping cavity formed by the two clamping blocks 5443, so that the clamped parts of the columnar workpiece can be heated in turn, further improving the uniformity of heating of the columnar workpiece; S4: Disassembly of the placement module 544 and the columnar workpiece. After the adhesive of the columnar workpiece is removed, open the furnace door, pull out the frame 2, press the placement module 544 to make the fan plate 5441 and the plug-in column 5451 continue to rise, and the trapezoidal block 5450 and the truncated cone block A5435 are separated. At this time, the plug-in module 545 can be directly taken out, and the S2.2 step is repeated to take out all the placement modules 544, and then take the columnar workpiece out of the placement module 544.

[0046] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A binder removal device for metal injection molding, comprising a degreasing furnace body (1), wherein a frame (2) is slidably arranged inside the degreasing furnace body (1), characterized in that: A planetary rotating mechanism (3) is arranged at the head end of the frame (2), and a placing mechanism (4) is arranged at the tail end of the frame (2); The planetary rotating mechanism (3) comprises a mounting block (31) and a motor (37), wherein the mounting block (31) is fixedly mounted at the head end of the frame (2), a circular groove (32) is formed at the tail end of the mounting block (31), a circular plate A (33) is rotatably mounted at the head end of the circular groove (32), an inner gear ring A (34) is fixedly mounted at the tail end of the circular groove (32), a sun gear (35) is disposed at the center of the circular plate A (33), the sun gear (35) is rotatably connected to the circular plate A (33) via a connecting rod A (36), the head end of the connecting rod A (36) sequentially passes through the circular plate A (33), the mounting block (31) and the head end of the frame (2) and is fixedly connected to the output shaft of the motor (37), the motor (37) is fixedly connected to the frame (2), and the sun gear (35) is meshedly connected to the inner gear ring A (34) via a plurality of planetary assemblies (38) arranged in an annular structure with equal spacing; The placement mechanism (4) comprises two circular plates B (41), and the two circular plates B (41) are fixedly provided with a rotating ring A (42) at one end which is relatively far away from each other, wherein one of the rotating rings A (42) is rotatably connected to the rear end of the mounting circular block (31), and the other rotating ring A (42) is rotatably connected to the rear end of the frame (2), and a plurality of placement components (5) are arranged in a ring-shaped and equidistant structure in the gaps between the mounting circular blocks (31) at both ends, and the number of the plurality of placement components (5) is equal to the number of the plurality of planetary components (38), and the two ends of the placement component (5) are rotatably connected to the two circular plates B (41), respectively, and the head end of the placement component (5) passes through the circular plate B (41) at the head end and is connected to the planetary component (38).

2. The binder removal device for metal injection molding according to claim 1, characterized in that: The planetary assembly (38) comprises a planetary gear ring (381), the two ends of the planetary gear ring (381) are respectively meshed with the inner gear ring A (34) and the sun gear (35), the planetary gear ring (381) is rotationally connected to the circular plate A (33) via a rotating ring B (382), an inner gear ring B (383) is fixedly provided on the inner edge surface of the planetary gear ring (381), a central gear (384) is provided inside the planetary gear ring (381), the central gear (384) is rotationally connected to the circular plate A (33) via a connecting rod B (385), the central gear (384) is meshed with the inner gear ring B (383) via at least one side gear (386), and the side gear (386) is rotationally connected to the circular plate A (33) via a connecting rod C (387).

3. The binder removal device for metal injection molding according to claim 2, characterized in that: The placement assembly (5) comprises two rotating plates (51), the two rotating plates (51) are rotatably disposed on the two circular plates B (41) respectively, the head end of the rotating plate (51) located at the head end passes through the circular plate B (41) and is fixedly connected to the planetary gear ring (381), a worm (52) is arranged in the gap between the two rotating plates (51), the two ends of the worm (52) are rotatably connected to the two rotating plates (51) respectively, the head end of the worm (52) passes through the rotating plate (51) located at the head end and is fixedly connected to the central gear (384), the two rotating plates (51) are fixedly connected by a plurality of arc plates (53) arranged in an annular equidistant structure, the gaps between any two adjacent arc plates (53) constitute an installation cavity, a plurality of placement units (54) are arranged in a linear equidistant structure on the installation cavity, and the plurality of placement units (54) are meshingly connected to the worm (52).

4. The binder removal device for metal injection molding according to claim 3, characterized in that: The placement unit (54) comprises a connecting shaft (541), the two ends of the connecting shaft (541) are fixedly connected to the two ends of the installation cavity, the connecting shaft (541) is rotatably connected to two partial worm wheels (542), the two partial worm wheels (542) are meshingly connected to the worm (52), the two partial worm wheels (542) are relatively close to one end and are fixed with a mounting ring (543), a plurality of placement modules (544) are arranged in a ring-shaped structure with equal spacing in the gap between the two partial worm wheels (542), and the two ends of the placement module (544) are plug-fitted with the two mounting rings (543) through plug-in modules (545).

5. The binder removal device for metal injection molding according to claim 4, characterized in that: The mounting ring (543) is provided with a plurality of plug-in slots A (5431) at equal intervals in a circular shape, and the number of the plurality of plug-in slots A (5431) is equal to the number of the plurality of placement modules (544). A plug-in slot B (5432) is provided at the bottom of the plug-in slot A (5431), a column (5433) is fixedly provided in the plug-in slot B (5432), a sliding rod (5434) is fixedly provided at the top of the column (5433), a round table block A (5435) is fixedly provided at the top of the sliding rod (5434), and the sliding rod (54 34) is provided with a truncated cone block B (5436), the truncated cone block A (5435) and the truncated cone block B (5436) are arranged in a symmetrical structure, two sliding grooves A (5437) are symmetrically opened on both sides of the plug-in slot A (5431), an arc block (5438) is slidably connected to the sliding groove A (5437), and a plurality of hole grooves (5439) are opened on the sliding groove A (5437), and the arc block (5438) and the corresponding plurality of hole grooves (5439) are elastically connected by springs A (5430).

6. The binder removal device for metal injection molding according to claim 5, characterized in that: The placement module (544) includes two fan-shaped plates (5441), and the two ends of the fan-shaped plates (5441) are respectively in contact with two corresponding arc blocks (5438). The two fan-shaped plates (5441) are fixedly connected by a plurality of connecting blocks (5440) arranged in a circular equidistant structure. The inner side of the fan-shaped plate (5441) is provided with a plurality of slide grooves B (5442) in a circular equidistant structure. A clamping block (5443) is slidably connected in the slide groove B (5442), and the clamping block (5443) is elastically connected to the slide groove B (5442) by a spring B (5444).

7. The binder removal device for metal injection molding according to claim 6, characterized in that: A plurality of movable grooves (5445) are provided on the outer side of the fan-shaped plate (5441) at positions relative to the plurality of slide grooves B (5442); an arc groove (5446) is provided in the movable groove (5445); the movable groove (5445) is communicated with the arc groove (5446); a movable plate (5447) is slidably connected in the arc groove (5446); the movable plate (5447) and the arc groove (5446) are elastically connected via a spring C (5448); the spring C (5448) is vortex-shaped; a guide plate (5449) is fixedly provided on the movable plate (5447); the guide plate (5449) is movably connected to the movable groove (5445); and the guide plate (5449) is a trapezoidal structure.

8. The binder removal device for metal injection molding according to claim 7, characterized in that: The plug-in module (545) comprises a plug-in column (5451), the plug-in column (5451) is fixedly arranged on the inner edge surface of the fan-shaped plate (5441), the bottom end of the plug-in column (5451) is provided with a guide fillet (5452), the plug-in column (5451) is plugged into and matched with the plug-in slot B (5432), a ring block A (5453) is fixedly arranged on the top of the plug-in column (5451), a ring block B (5454) is sleeved on the bottom of the plug-in column (5451), the ring block A (5453) and the ring block B (5454) are elastically connected via a spring D (5455), and the ring block B (5454) and the plug-in slot A (5432) are plugged into and matched with each other. 31) movable cooperation, a circular hole (5456) is opened at the bottom of the plug-in column (5451), and sliding grooves C (5457) are opened on both sides of the bottom of the circular hole (5456), and a slider (5458) is slidably connected to the sliding groove C (5457), and the slider (5458) and the sliding groove C (5457) are elastically connected by a spring E (5459), and a trapezoidal block (5450) is fixed on the slider (5458), and the trapezoidal block (5450) passes through the sliding groove C (5457) and is movably cooperated with the truncated cone block A (5435), and the trapezoidal block (5450) is movably cooperated with the truncated cone block B (5436).

9. The binder removal device for metal injection molding according to claim 8, characterized in that: A rotating block (5411) is fixedly provided in the middle of the connecting shaft (541), and a plurality of protrusions (5412) are provided in an annular structure with equal spacing on the circumference of the rotating block (5411), and a groove (5413) is provided between any two adjacent protrusions (5412).

10. A method for using a binder removal device for metal injection molding according to claim 9, characterized in that: The following steps are involved: S1: placing a columnar workpiece formed by metal powder injection molding on a placement module (544), that is, inserting the columnar workpiece from the inner side of the fan-shaped plate (5441) into the clamping cavity formed by the gap of the clamping block (5443), so that the end of the columnar workpiece contacts the inclined end of the guide plate (5449), and placing all the columnar workpieces on a plurality of placement modules (544) in the same manner as the above steps; S2: installation of placement module (544); S2.1: Pick up the placement module (544), insert the plug-in column (5451) into the plug-in slot B (5432), so that the bottom end of the ring block B (5454) contacts the bottom end of the plug-in slot A (5431), so that the slider (5458) enters the gap between the truncated cone block A (5435) and the truncated cone block B (5436), and under the elastic force of the spring D (5455), the ring block A (5453) provides elastic force for the plug-in column (5451) and the placement module (544), and at this time, the two corresponding arc blocks (5438) are in contact with both ends of the fan-shaped plate (5441), and under the elastic force of the spring A (5430), further elastic force is provided for the placement module (544), so that the placement module (544) is installed; all the placement modules (544) that can be installed on the installable placement mechanism (4) are installed in the same way as the above steps; S2.2: Adjustment of the shape of the placement module (544); if all the placement modules (544) that can be installed on the placement mechanism (4) are installed and there are still placement modules (544) that have not been installed, the output shaft of the external control motor (37) is rotated, so that the sun gear (35) drives the planetary gear ring (381) to perform planetary revolution along the inner gear ring A (34), so that the circular plate A (33) and the circular plate B (41) rotate, and the planetary gear ring (381) rotates relative to the circular plate A (33), so that the planetary gear ring (381) passes through the side gear (3 86) drives the central gear (384) to rotate, and the central gear (384) and the side gear (386) rotate differentially, so that the placement mechanism (4) rotates as a whole, and the rotating plate (51) and the worm (52) rotate differentially, and the rotation of the worm (52) drives part of the worm wheel (542) to rotate relative to the connecting shaft (541), so that the position of each placement module (544) on the placement component (5) changes, and the placement module (544) is installed in the same manner as step S2.1, and the above operation is continued until all the placement modules (544) for placing columnar workpieces are installed; S3: removing the binder from the columnar workpiece after metal powder injection molding; The frame (2) is pushed into the debinding furnace body (1), the furnace door is closed, the heating temperature and heating time of the debinding furnace body (1) are set, and the output shaft of the motor (37) is controlled to rotate by an external control mechanism, so that the placement mechanism (4) repeats the motion state of S2.2, so that the uniformity of heating of all columnar workpieces is improved, and the binder removal effect is improved. Under the elastic force of the spring C (5448), the end of the columnar workpiece continues to contact the protrusion (5412) or the groove (5413), and at the same time, during the rotation of part of the worm gear (542) relative to the connecting shaft (541), the placement module (544) rotates relative to the rotating block (5411), so that the columnar workpiece moves back and forth in the clamping cavity formed by the two clamping blocks (5443), so that the clamped parts of the columnar workpiece can be heated in turn, further improving the uniformity of heating of the columnar workpiece; S4: Disassembly of the placement module (544) and the columnar workpiece. When the adhesive of the columnar workpiece is removed, open the furnace door, pull out the rack (2), press the placement module (544) to make the fan-shaped plate (5441) and the plug-in column (5451) continue to rise, and the trapezoidal block (5450) and the truncated cone block A (5435) are separated. At this time, the plug-in module (545) can be directly taken out, and the S2.2 step is repeated to take out all the placement modules (544), and then the columnar workpiece can be taken out from the placement module (544).

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