Metal powder processing and forming device for gears and method thereof

Abstract

The present invention belongs to the field of powder processing technology, specifically a metal powder processing and molding device for gears and a method thereof; it includes a processing table; a lower mold, which is arranged on the top of the processing table; a fixed loading device is provided on the processing table; the fixed loading device includes a positioning square groove, and two of the positioning square grooves are symmetrically installed on the top of the processing table; a telescopic cylinder, which is installed on the top of the processing table; the output end of the telescopic cylinder faces the lower mold, and an upper mold is also installed, and the top of the lower mold is located at the moving path of the bottom of the upper mold; a rotary auxiliary pressure component, which is arranged on the processing table; the rotary auxiliary pressure component includes an arc-shaped cylinder; it is possible to avoid the formation of cavities inside the powder in the mold filling area, so that the powder filling amount required for molding is sufficient, so as to improve the molding quality of the gear, make the device and the molded gear safer when in use, thereby improving the molding effect of the device on the gear, and reducing the limitations of the device when in use.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder processing, and in particular relates to a metal powder processing and forming device for gears and a method thereof. Background Art

[0002] Metal powder is a fine granular substance made of metal material. By introducing the metal powder into the mold required for forming the gear, the powder is compacted under the action of the hydraulic system, and then the metal powder is extruded and formed into a gear. However, during the use of the existing metal powder processing and forming device for gears, the powder raw materials introduced into the mold are not tightly stacked due to factors such as powder properties, complex mold cavity structure or filling process, which easily forms cavities inside the filling area, resulting in insufficient powder filling. This not only seriously affects the quality of gear forming and makes it less safe during use, but also reduces the forming effect of the device, making the device more limited during forming. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a metal powder processing and molding device for gears and a method thereof, which effectively solves the problems in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a metal powder processing and molding device for gears, comprising a processing table;

[0005] The lower mold is arranged on the top of the processing table; the processing table is provided with a retaining and loading device for loading and unloading the lower mold on the processing table; the retaining and loading device includes a positioning square groove, and two positioning square grooves are symmetrically installed on the top of the processing table;

[0006] A telescopic cylinder is mounted on the top of the processing table; the output end of the telescopic cylinder faces the lower mold, and an upper mold is also mounted thereon, with the top of the lower mold located in the moving path of the bottom of the upper mold;

[0007] A rotary auxiliary pressure assembly is provided on the processing table and is used to reduce the cavity ratio of the powder at the lower mold; the rotary auxiliary pressure assembly comprises an arc-shaped cylinder, one end of which is open and the other end is closed;

[0008] The first substrate is installed on the processing table; the first substrate is connected to the closed end of the arc-shaped cylinder; the arc-shaped cylinder is also provided with a pressure control and air regulation unit; the pressure control and air regulation unit includes a ventilation box, which is installed on both sides of the arc-shaped cylinder, and the two are connected.

[0009] Preferably, it includes an air pump, which is installed on the processing table;

[0010] A connecting hose, one end of which is mounted on the air pump, and the other end of which passes through the first base plate and is mounted in the arc-shaped cylinder;

[0011] An arc-shaped rod body, one end of which is located in the arc-shaped cylinder, and the two are rotatably matched; the other end of the arc-shaped rod body faces the lower mold, and is also equipped with an auxiliary horizontal plate; the centers of the arc-shaped rod body and the arc-shaped cylinder are coaxial;

[0012] An arc spring is located in the arc cylinder; one end of the arc spring is fixedly connected to the inner bottom surface of the arc cylinder, and the other end is fixedly connected to the arc rod;

[0013] The vertical rack is installed on the side of the auxiliary horizontal plate.

[0014] Preferably, the arc-limiting groove is provided on opposite surfaces of the inner portion of the arc-shaped cylinder; limit rotation blocks are installed on both sides of the arc-shaped rod body, which rotate in conjunction with the limit arc groove; when the arc-shaped rod body rotates to the maximum range in the arc-shaped cylinder body, the limit rotation blocks on the arc-shaped rod body contact the edge of the limit arc groove, and the arc-shaped rod body is limited to the current position, so that the auxiliary horizontal plate on it is located at the top of the lower mold, and the two are arranged in parallel;

[0015] An auxiliary cylinder is connected to the top of the auxiliary horizontal plate, and the two are slidably matched; an auxiliary limit plate is installed at the end of the auxiliary cylinder away from the lower mold; a compacting mold is installed at the end of the auxiliary cylinder close to the lower mold, and the top of the lower mold is located in the moving path of the compacting mold;

[0016] An auxiliary spring is sleeved on the auxiliary cylinder; one end of the auxiliary spring is fixedly connected to the auxiliary limit plate, and the other end is fixedly connected to the auxiliary transverse plate.

[0017] Preferably, it includes a positioning square column installed at the bottom of the lower mold; the positioning square column is slidably matched with the positioning square groove;

[0018] A positioning spring is located in the positioning square groove; one end of the positioning spring is installed on the inner bottom surface of the positioning square groove, and the other end is located at the moving path of the positioning square column away from one end of the lower mold; a plurality of retaining slots are provided on the side of the positioning square column, which are arranged at equal distances.

[0019] Preferably, it includes a retaining square column, and two of the retaining square columns are symmetrically installed on the side of the processing table;

[0020] A retaining square plate is slidably connected to the retaining square column; a retaining spring is sleeved on the retaining square column, one end of which is fixedly connected to the retaining square plate and the other end is connected to a retaining limit plate, and the retaining limit plate is installed at the end of the retaining square column away from the processing table;

[0021] Retention cross block; the two said retention square plates are connected together at the retention cross block, and a pull ring is installed on the side away from the processing table; the retention cross block and the processing table are provided with contact pieces at the opposite surfaces, and the two contact pieces are electrically connected;

[0022] The retaining plug is installed on a side of the retaining cross block close to the processing table; the retaining plug passes through the processing table and is connected to one of the retaining slots.

[0023] Preferably, it comprises an air delivery hose, one end of which is mounted on the ventilation box, and the other end of which is mounted with a vertical circular tube, the end point of which faces the compacting mold and is also slidably connected to a guide cylinder;

[0024] A second base plate is mounted on the arc-shaped rod body; the second base plate is fixedly connected to the vertical circular tube; a guide horizontal plate is mounted on one end of the guide cylinder close to the compaction mold;

[0025] A guide spring is sleeved on the guide cylinder; one end of the guide spring is fixedly connected to the second base plate, and the other end is fixedly connected to the guide horizontal plate; a linkage column is installed on the guide horizontal plate, and the top of the compacting mold is located at the moving path of the linkage column.

[0026] Preferably, the compacting mold is further provided with a uniform powder stirring mechanism; the uniform powder stirring mechanism comprises a third base plate, which is installed on a side of the compacting mold away from the lower mold;

[0027] A driving gear is mounted on the third base plate; the driving gear is meshed with the vertical rack;

[0028] An active bevel gear is mounted on the side of the third base plate and is rotatably connected to the driving gear;

[0029] The driven bevel gear is connected to the compacting die and meshed with the driving bevel gear; a first pulley is also installed on the driven bevel gear.

[0030] Preferably, it includes a second pulley, which is installed on a side of the compacting mold away from the lower mold;

[0031] A transmission belt, two ends of which are connected to the second pulley and the first pulley respectively; the transmission belt is in sliding engagement with the second pulley and the first pulley;

[0032] A cavity is provided in the compaction mold, and a large gear is installed on the second pulley, which is located in the cavity; the large gear is meshed with a plurality of small gears, and a driving shaft is installed on the small gears, and a plurality of stirring rods are connected to the end of the driving shaft away from the cavity; the stirring rods are located on the side of the compaction mold close to the lower mold.

[0033] Preferably, it comprises a rectangular square plate, which is installed in the ventilation box; a rectangular square groove is provided on one side of the rectangular square plate close to the arc-shaped cylinder;

[0034] A limiting cylinder is installed through the side of the ventilation box away from the arc-shaped cylinder; the limiting cylinder and the ventilation box are slidably matched; a limiting square plate is installed at the end point of the limiting cylinder, which is located inside the ventilation box; the initial position of the limiting square plate is connected to the rectangular square groove;

[0035] A limit spring is sleeved on the limit cylinder; one end of the limit spring is fixedly connected to the limit square plate, and the other end is fixedly connected to the inner wall of the ventilation box.

[0036] The present invention also provides a method for processing and forming metal powder for gears, comprising the following steps:

[0037] S1. Fill the lower die with the metal powder required for forming the gear, and operate the rotary auxiliary pressure component to reduce the cavity inside the powder;

[0038] S2. Start the telescopic cylinder to move the upper mold on the output end toward the lower mold and make contact, forming a closed mold cavity to apply pressure to the powder, so that the gear can be pressed into shape.

[0039] From the above, it can be seen that the metal powder processing and molding device for gears provided by the present invention has the effect of preventing the device from reducing the amount of powder due to non-human factors during the molding process, thereby affecting the molding quality of the gear. At the same time, it is also used to reduce the cavity phenomenon inside the filling powder, and avoid the powder raw materials introduced into the mold due to factors such as powder properties, complex cavity structure or filling process, which leads to the failure of the powder to be tightly stacked at the filling point, thereby avoiding the formation of cavities inside the powder in the mold filling area, so that the powder filling amount required for molding is sufficient, thereby improving the molding quality of the gear, making the device and the molded gear safer when in use, thereby improving the molding effect of the device on the gear, and reducing the limitations of the device during use and molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0041] In the attached figure:

[0042] Figure 1 This is one of the overall structural diagrams of the present invention;

[0043] Figure 2 This is a schematic diagram of the lower mold structure of the present invention;

[0044] Figure 3 This is a schematic diagram of the auxiliary horizontal plate structure of the present invention;

[0045] Figure 4This is a cross-sectional exploded view of the positioning square column of the present invention;

[0046] Figure 5 is a cross-sectional view of the compaction mold of the present invention;

[0047] Figure 6 This is the second schematic diagram of the overall structure of the present invention;

[0048] Figure 7 This is a cross-sectional view of the ventilation box of the present invention;

[0049] Figure 8 This is a schematic diagram of the positioning spring structure of the present invention;

[0050] Figure 9 This is a schematic diagram of the structure of the gas delivery hose of the present invention;

[0051] Figure 10 This is a cross-sectional view of the arc-shaped cylinder of the present invention;

[0052] Figure 11 This is a schematic diagram of the vertical rack structure of the present invention;

[0053] Figure 12 This is a cross-sectional view of the limiting arc groove of the present invention;

[0054] In the figure: 1, processing table; 2, lower mold; 3, positioning square groove; 4, telescopic cylinder; 5, upper mold; 6, arc cylinder; 7, first base plate; 8, ventilation box; 9, air pump; 10, connecting hose; 11, arc rod; 12, auxiliary horizontal plate; 13, arc spring; 14, vertical rack; 15, limiting arc groove; 16, limiting rotating block; 17, auxiliary cylinder; 18, compacting mold; 19, auxiliary spring; 20, positioning square column; 21, positioning spring; 22, retaining slot; 23, retaining square column; 24, retaining square plate; 25, retaining spring; 26, retaining horizontal block ; 27. Contact piece; 28. Retaining plug; 29. ​​Gas hose; 30. Vertical circular tube; 31. Guide cylinder; 32. Second base plate; 33. Guide horizontal plate; 34. Guide spring; 35. Linkage column; 36. Third base plate; 37. Drive gear; 38. Active bevel gear; 39. Driven bevel gear; 40. First pulley; 41. Second pulley; 42. Transmission belt; 43. Large gear; 44. Small gear; 45. Drive shaft; 46. Stirring rod; 47. Rectangular plate; 48. Rectangular groove; 49. Limiting cylinder; 50. Limiting plate; 51. Limiting spring. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0056] Example, by Figures 1 to 12 It is given that the present invention comprises a processing table 1;

[0057] The lower mold 2 is arranged on the top of the processing table 1; the processing table 1 is provided with a retaining and loading device for loading and unloading the lower mold 2 on the processing table 1; the retaining and loading device includes a positioning square groove 3, two of the positioning square grooves 3 are symmetrically installed on the top of the processing table 1;

[0058] A telescopic cylinder 4 is mounted on the top of the processing table 1; the output end of the telescopic cylinder 4 faces the lower mold 2, and an upper mold 5 is also installed, and the top of the lower mold 2 is located in the moving path of the bottom of the upper mold 5;

[0059] A positioning square column 20 is installed at the bottom of the lower mold 2; the positioning square column 20 is slidably matched with the positioning square groove 3;

[0060] A positioning spring 21 is located in the positioning square groove 3; one end of the positioning spring 21 is mounted on the inner bottom surface of the positioning square groove 3, and the other end is located in the movement path of the positioning square column 20 away from the end of the lower mold 2; a plurality of retaining slots 22 are provided on the side of the positioning square column 20, which are arranged at equal intervals;

[0061] Retaining square columns 23, two of which are symmetrically mounted on the side of the processing table 1;

[0062] A retaining square plate 24 is slidably connected to the retaining square column 23; a retaining spring 25 is sleeved on the retaining square column 23, one end of which is fixedly connected to the retaining square plate 24 and the other end is connected to a retaining limit plate, which is installed at the end of the retaining square column 23 away from the processing table 1;

[0063] Retention block 26; the two retaining square plates 24 are connected together at the retention block 26, and a pull ring is installed on the side away from the processing table 1; the retention block 26 and the processing table 1 are provided with contact pieces 27 on the opposite sides, and the two contact pieces 27 are electrically connected;

[0064] A retaining plug 28 is installed on the side of the retaining cross block 26 close to the processing table 1; the retaining plug 28 passes through the processing table 1 and is connected to one of the retaining slots 22;

[0065] When the device is in use, it is necessary to produce gear parts of different sizes or models according to different gear forming requirements. At this time, it is necessary to replace the lower mold 2 and the upper mold 5 of different models. The following is the loading and unloading process of the lower mold 2, which can be consistent when applied to the upper mold 5; when it is necessary to install the lower mold 2, by pulling the pull ring outward, the retaining cross block 26 on it can be limited and moved at the retaining square column 23 through the retaining square plate 24, so that the retaining spring 25 on it is in a buffering state, which can make the retaining plug 28 on the retaining cross block 26 no longer located in the positioning square groove 3. At this time, it is only necessary to align the positioning square column 20 on the lower mold 2 with the positioning square groove 3 and insert it to locate the installation position of the lower mold 2, thereby avoiding the deviation of the installation position of the lower mold 2 from the preset position, which will cause the molding effect and quality to be reduced, thereby improving the installation effect of the mold;

[0066] When the positioning square column 20 moves within the positioning square groove 3, it will contact the end point of the positioning spring 21, putting it in a buffer state. The damping effect generated is used to actively reduce the speed of the lower mold 2 at the end of the installation position, avoiding the installation speed of the lower mold 2 being too fast, resulting in its rapid contact with the processing table 1, resulting in excessive impact force, which affects the life and precision of the lower mold 2, and improves the stability of the lower mold 2 during installation; it is worth mentioning that after the lower mold 2 has reached the specified installation position, the retaining cross block 26 that was originally pulled outward is released, so that the retaining spring 25 in the buffer state is reset, which will drive the retaining plug 28 on the retaining cross block 26 to reset and move into the positioning square groove 3 and connect with one of the retaining slots 22, thereby fixing the lower mold 2 in the current position, avoiding its dislocation due to non-human factors during use; it is worth mentioning that the number of retaining slots 22 is several, so that the lower mold 2 can be installed in different The invention relates to a device for use at a high height, which reduces the limitations of the device during use. At the same time, after the lower mold 2 is fixed, the positioning spring 21 in the buffer state cannot be reset, and the elastic force brought about will act on the positioning square column 20, thereby increasing the contact strength and friction between the retaining slot 22 and the retaining plug 28, improving the installation effect and stability of the lower mold 2, and improving the effect of the device during molding. It is worth mentioning that after the lower mold 2 is installed, the retaining cross block 26 and the contact pieces 27 at the opposite surfaces of the processing table 1 will contact each other, and the contact of the two contact pieces 27 will send a signal to the control center. When the device is in use, if the control center receives a signal of separation of the two contact pieces 27, it means that the retaining plug 28 on the retaining cross block 26 is no longer in contact with the retaining slot 22. The control center will immediately discover and notify the staff to go there, avoiding the dislocation of the lower mold 2 due to non-human factors during use, thereby improving the safety of the device during use.

[0067] When the device needs to replace or maintain the lower mold 2, the lower mold 2 needs to be disassembled. At this time, it is only necessary to pull the retaining cross block 26 outward, so that the retaining plug 28 on it is separated from the processing table 1 and is no longer connected to the retaining slot 22, thereby releasing the limit setting of the positioning square column 20, and completing the disassembly operation of the lower mold 2, so that the positioning spring 21 that was originally in the buffer state is reset, and the lower mold 2 can be popped out of the installation position on the processing table 1, which is convenient for the staff to replace or maintain the disassembled lower mold 2, making the installation and disassembly operations of the device on the lower mold 2 convenient and quick, and can be completed without the aid of any tools, reducing the limitations of the device during use, and allowing the device to use matching molds according to different molding requirements, thereby improving the molding effect of the device.

[0068] The rotary auxiliary pressure assembly of this embodiment is arranged on the processing table 1, and is used to reduce the cavity ratio of the powder at the lower mold 2; the rotary auxiliary pressure assembly includes an arc-shaped cylinder 6, one end of which is open and the other end is closed.

[0069] A first substrate 7 is mounted on the processing table 1; the first substrate 7 is connected to the closed end of the arc-shaped cylinder 6;

[0070] An air pump 9 is mounted on the processing table 1;

[0071] A connecting hose 10, one end of which is mounted on the air pump 9, and the other end of which passes through the first base plate 7 and is mounted in the arc-shaped cylinder 6;

[0072] An arc-shaped rod 11, one end of which is located in the arc-shaped cylinder 6, and the two are rotatably matched; the other end of the arc-shaped rod 11 faces the lower mold 2, and is further equipped with an auxiliary horizontal plate 12; the centers of the arc-shaped rod 11 and the arc-shaped cylinder 6 are coaxial;

[0073] An arc spring 13 is located inside the arc cylinder 6; one end of the arc spring 13 is fixedly connected to the inner bottom surface of the arc cylinder 6, and the other end is fixedly connected to the arc rod 11;

[0074] A vertical rack 14 is mounted on the side of the auxiliary horizontal plate 12;

[0075] The limiting arc groove 15 is provided on the opposite surface of the interior of the arc cylinder 6; the limiting rotating blocks 16 are installed on both sides of the arc rod 11, which rotate in conjunction with the limiting arc groove 15; when the arc rod 11 rotates to the maximum range in the arc cylinder 6, the limiting rotating blocks 16 on the arc rod 11 contact the edge of the limiting arc groove 15, and the arc rod 11 is limited to the current position, so that the auxiliary horizontal plate 12 on it is located at the top of the lower mold 2, and the two are arranged in parallel;

[0076] The auxiliary cylinder 17 is connected to the top of the auxiliary horizontal plate 12, and the two are slidably matched; the auxiliary limit plate is installed on the end of the auxiliary cylinder 17 away from the lower mold 2; the compacting mold 18 is installed on the end of the auxiliary cylinder 17 close to the lower mold 2, and the top of the lower mold 2 is located in the moving path of the compacting mold 18;

[0077] An auxiliary spring 19 is sleeved on the auxiliary cylinder 17; one end of the auxiliary spring 19 is fixedly connected to the auxiliary limit plate, and the other end is fixedly connected to the auxiliary horizontal plate 12;

[0078] An air delivery hose 29, one end of which is mounted on the ventilation box 8, and the other end of which is mounted with a vertical circular tube 30, the end of which faces the compacting mold 18 and is also slidably connected to a guide cylinder 31;

[0079] A second base plate 32 is mounted on the arc-shaped rod 11; the second base plate 32 is fixedly connected to the vertical tube 30; a guide horizontal plate 33 is mounted on one end of the guide cylinder 31 close to the compaction mold 18;

[0080] A guide spring 34 is sleeved on the guide cylinder 31; one end of the guide spring 34 is fixedly connected to the second base plate 32, and the other end is fixedly connected to the guide horizontal plate 33; a linkage column 35 is mounted on the guide horizontal plate 33, and the top of the compacting mold 18 is located in the movement path of the linkage column 35;

[0081] When the device is in use, the metal powder required for molding is filled into the lower mold 2, and the gas generated by the gas pump 9 is sent into the arc cylinder 6 through the connecting hose 10, thereby pressing the arc rod 11 in the arc cylinder 6, so that the arc rod 11 slides in a limited position at the arc cylinder 6, so that the arc spring 13 is in a buffer state, so that the limit rotating block 16 on the arc rod 11 slides in a limited position in the limit arc groove 15; and then the auxiliary horizontal plate 12 on the arc rod 11 rotates toward the top direction of the lower mold 2. When the limit rotating block 16 When it rotates to the edge of the limit arc groove 15 and contacts, it means that the arc rod 11 on the limit rotating block 16 has rotated to the maximum range. At this time, the auxiliary horizontal plate 12 on the arc rod 11 is parallel to the top of the lower mold 2, so that the compacting mold 18 on the auxiliary horizontal plate 12 moves to the top of the lower mold 2. At this time, the gas entering the arc cylinder 6 can no longer continue to drive the arc rod 11 to rotate, so that the gas entering the arc cylinder 6 will enter the gas hose 29 through the ventilation box 8 at the pressure control and gas regulating unit, thereby pressing The guide cylinder 31 moves in a limited position at the vertical tube 30, so that the guide spring 34 is in a buffer state, and the guide horizontal plate 33 on the guide cylinder 31 drives the linkage column 35 to move close to the compacting die 18 and contact it, thereby pressing the compacting die 18, so that it moves in a limited position at the auxiliary horizontal plate 12 through the auxiliary cylinder 17, so that the auxiliary spring 19 is in a buffer state, so that the compacting die 18 contacts the top of the lower die 2, so that the metal powder filled in the lower die 2 can be preliminarily compacted to avoid the presence of cavities inside the powder, which may cause insufficient powder filling. The molding quality of the gear is improved, and the molding effect of the device is improved; at this time, by releasing the gas inside the air supply hose 29 and the arc-shaped cylinder 6, the auxiliary horizontal plate 12 and the compacting die 18 can be driven to reset, so as to avoid the two being located in the moving path of the upper die 5 and affecting the molding process of the device. At this time, according to the molding requirements, powder can be continued to be filled or the telescopic cylinder 4 can be operated so that its output end can drive the upper die 5 to move toward the lower die 2 and contact it, so that the upper die 5 and the lower die 2 are merged, and the gear is compacted and formed, completing the molding operation of the device on the gear;After the powder is continuously filled into the lower mold 2, the above-mentioned operation is repeated, so that the compacting mold 18 continues to compact the powder in the lower mold 2. This not only preliminarily shapes the gear and prevents the gear molding quality from being affected by a reduction in the amount of powder due to factors other than human factors during the molding process, but also reduces the cavity phenomenon within the filled powder. This prevents the powder raw materials introduced into the mold from being tightly packed together at the filling location due to factors such as powder properties, complex mold cavity structure, or filling process, thereby avoiding the formation of cavities within the powder in the mold filling area. This ensures that the powder filling amount required for molding is sufficient, thereby improving the molding quality of the gear and making the device and the molded gear safer during use. This improves the molding effect of the device on the gear and reduces the limitations of the device during use and molding.

[0082] The compacting mold 18 of this embodiment is also provided with a uniform powder stirring mechanism; the uniform powder stirring mechanism includes a third base plate 36, which is installed on the side of the compacting mold 18 away from the lower mold 2;

[0083] A driving gear 37 is mounted on the third base plate 36 ; the driving gear 37 is meshed with the vertical rack 14 ;

[0084] A driving bevel gear 38 is mounted on the side of the third base plate 36 and is rotatably connected to the driving gear 37;

[0085] A driven bevel gear 39 is connected to the compacting die 18 and meshes with the driving bevel gear 38; a first pulley 40 is also mounted on the driven bevel gear 39;

[0086] A second pulley 41 is mounted on a side of the compacting mold 18 away from the lower mold 2;

[0087] A transmission belt 42, whose two ends are connected to the second pulley 41 and the first pulley 40 respectively; the transmission belt 42 is in sliding engagement with the second pulley 41 and the first pulley 40;

[0088] The compaction mold 18 has a cavity therein, and a large gear 43 is mounted on the second pulley 41 and is located in the cavity; the large gear 43 is meshedly connected to a plurality of small gears 44, and a drive shaft 45 is mounted on the small gears 44. The drive shaft 45 is connected to a plurality of stirring rods 46 at one end away from the cavity; the stirring rods 46 are located on the side of the compaction mold 18 close to the lower mold 2;

[0089] When the compacting mold 18 is parallel to the upper part of the lower mold 2 and moves vertically close to it, it is worth mentioning that the stirring rod 46 is located at the bottom of the compacting mold 18, and at the same time, the distance between the compacting mold 18 and the auxiliary horizontal plate 12 becomes larger. Since the driving gear 37 is meshed with the vertical rack 14, the driving gear 37 on the compacting mold 18 rotates when it descends, and drives the second pulley 41 to rotate under the action of the active bevel gear 38, the driven bevel gear 39, the first pulley 40 and the transmission belt 42, so that the large gear 43 on it rotates in the cavity, and meshes with a number of small gears 44 to rotate, and drives a number of stirring rods 46 to rotate under the action of the driving shaft 45, so that the compacting mold 18 Before contacting the powder at the lower mold 2, several stirring rods 46 at the bottom of the compacting mold 18 will first contact the powder, and the stirring rods 46 will contact the powder in the lower mold 2 in a rotating state, which is used to break up the metal powder filled in the lower mold 2, which can reduce the cavity phenomenon in the filled powder and avoid the filled powder from clumping. In other words, several stirring rods 46 rotate in the powder to break up the clumped powder and avoid local looseness caused by powder particle agglomeration, thereby improving the molding effect and quality of the device on the gear, and improving the effect of the device when in use, and making the powder dispersed and granular for molding, thereby reducing the limitations of the device when in use.

[0090] The arc-shaped cylinder 6 of this embodiment is also provided with a pressure control and air regulation unit; the pressure control and air regulation unit includes a ventilation box 8, which is installed on both sides of the arc-shaped cylinder 6, and the two are connected;

[0091] A rectangular plate 47 is installed in the ventilation box 8; a rectangular groove 48 is provided on the side of the rectangular plate 47 close to the arc-shaped cylinder 6;

[0092] A limiting cylinder 49 is installed through the side of the ventilation box 8 away from the arc-shaped cylinder 6; the limiting cylinder 49 and the ventilation box 8 are slidably matched; a limiting square plate 50 is installed at the end point of the limiting cylinder 49, which is located inside the ventilation box 8; the initial position of the limiting square plate 50 is connected to the rectangular square groove 48;

[0093] A limit spring 51 is sleeved on the limit cylinder 49; one end of the limit spring 51 is fixedly connected to the limit square plate 50, and the other end is fixedly connected to the inner wall of the ventilation box 8;

[0094] It is worth mentioning that the strength of the limit spring 51 is greater than that of the arc spring 13, that is, when the gas generated by the air pump 9 is sent into the arc cylinder 6 to drive the arc rod 11 to rotate, it cannot cause the limit spring 51 to deform, which makes the gas only flow in the arc cylinder 6 to move the auxiliary horizontal plate 12 on the arc rod 11 to a position parallel to the upper part of the lower mold 2; when the arc rod 11 is parallel to the upper part of the lower mold 2, it means that the arc rod 11 has been rotated to the maximum movement. The range is such that the gas in the arc cylinder 6 cannot continue to drive the arc rod 11 to rotate, causing the air pressure in the arc cylinder 6 to increase. After the air pressure at this place exceeds the strength of the limit spring 51, the gas acts on the limit plate 50 through the rectangular square groove 48, and pushes the limit plate 50 to move within the vent box 8 through the limit cylinder 49, so that the limit spring 51 is in a buffer state, and then the limit plate 50 on the limit cylinder 49 no longer contacts the rectangular square groove 48, which can make The gas that enters the arc-shaped cylinder 6 enters the connecting hose 10 through the ventilation box 8, which is used to drive the compacting mold 18 to move vertically downward and contact the lower mold 2, so as to preliminarily compact the filling powder located in the lower mold 2, so that the displacement sequence of the compacting mold 18 is to first rotate to be parallel to the upper part of the lower mold 2 and move vertically, so as to avoid the compacting mold 18 from being displaced due to the gas entering the connecting hose 10 during the rotation process, thereby affecting the compaction effect. At the same time, only one driving source is required for the movement of the compacting mold 18, so as to avoid the use of multiple driving sources resulting in excessive energy consumption of the device during use and reducing the service life of the device, thereby improving the effect of the device during use; and when the gas enters the connecting hose 10 through the ventilation box 8, it can also ensure that the force of the gas on the arc rod 11 when in the arc-shaped cylinder 6 will not be reduced, so as to avoid the compacting mold 18 located parallel to the upper part of the lower mold 2 from being dislocated during use, thereby reducing the limitations of the device during use.

[0095] The present invention also provides a method for processing and forming metal powder for gears, comprising the following steps:

[0096] S1. Fill the lower die 2 with the metal powder required for forming the gear, and operate the auxiliary pressure component to reduce the cavity inside the powder;

[0097] S2. Start the telescopic cylinder 4 so that the upper mold 5 on the output end moves toward and contacts the lower mold 2, forming a closed mold cavity to apply pressure to the powder to form the gear.

[0098] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0099] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A metal powder processing and molding device for gears, comprising a processing table; The lower mold is arranged on the top of the processing table; it is characterized by: The processing table is provided with a fixed loading device, which is used to load and unload the mold on the processing table; the fixed loading device includes a positioning square groove, and two positioning square grooves are symmetrically installed on the top of the processing table; A telescopic cylinder is mounted on the top of the processing table; the output end of the telescopic cylinder faces the lower mold, and an upper mold is also mounted thereon, with the top of the lower mold located in the moving path of the bottom of the upper mold; A rotary auxiliary pressure assembly is provided on the processing table and is used to reduce the cavity ratio of the powder at the lower mold; the rotary auxiliary pressure assembly comprises an arc-shaped cylinder, one end of which is open and the other end is closed; A first substrate is mounted on the processing table; the first substrate is connected to the closed end of the arc-shaped cylinder; the arc-shaped cylinder is also provided with a pressure control and air regulation unit; the pressure control and air regulation unit includes a ventilation box, which is mounted on both sides of the arc-shaped cylinder and the two are connected; A rectangular square plate is installed in the ventilation box; a rectangular square groove is provided on one side of the rectangular square plate close to the arc-shaped cylinder; A limiting cylinder is installed through the side of the ventilation box away from the arc-shaped cylinder; the limiting cylinder and the ventilation box are slidably matched; a limiting square plate is installed at the end point of the limiting cylinder, which is located inside the ventilation box; the initial position of the limiting square plate is connected to the rectangular square groove; A limit spring is sleeved on the limit cylinder; one end of the limit spring is fixedly connected to the limit square plate, and the other end is fixedly connected to the inner wall of the ventilation box; an air pump mounted on the processing table; A connecting hose, one end of which is mounted on the air pump, and the other end of which passes through the first base plate and is mounted in the arc-shaped cylinder; An arc-shaped rod body, one end of which is located in the arc-shaped cylinder, and the two are rotatably matched; the other end of the arc-shaped rod body faces the lower mold, and is also equipped with an auxiliary horizontal plate; the centers of the arc-shaped rod body and the arc-shaped cylinder are coaxial; An arc spring is located in the arc cylinder; one end of the arc spring is fixedly connected to the inner bottom surface of the arc cylinder, and the other end is fixedly connected to the arc rod; A vertical rack, which is installed on the side of the auxiliary horizontal plate; Limit arc grooves are provided on opposite surfaces of the interior of the arc-shaped cylinder; limit rotation blocks are installed on both sides of the arc-shaped rod body, which rotate in conjunction with the limit arc grooves; when the arc-shaped rod body rotates to the maximum range within the arc-shaped cylinder body, the limit rotation blocks on the arc-shaped rod body contact the edges of the limit arc grooves, thereby limiting the arc-shaped rod body to the current position, so that the auxiliary horizontal plate on it is located at the top of the lower mold, and the two are arranged in parallel; An auxiliary cylinder is connected to the top of the auxiliary horizontal plate, and the two are slidably matched; an auxiliary limit plate is installed at the end of the auxiliary cylinder away from the lower mold; a compacting mold is installed at the end of the auxiliary cylinder close to the lower mold, and the top of the lower mold is located in the moving path of the compacting mold; An auxiliary spring is sleeved on the auxiliary cylinder; one end of the auxiliary spring is fixedly connected to the auxiliary limit plate, and the other end is fixedly connected to the auxiliary transverse plate.

2. The metal powder processing and molding device for gears according to claim 1, characterized in that: It includes a positioning square column installed at the bottom of the lower mold; the positioning square column is slidably matched with the positioning square groove; A positioning spring is located in the positioning square groove; one end of the positioning spring is installed on the inner bottom surface of the positioning square groove, and the other end is located at the moving path of the positioning square column away from one end of the lower mold; a plurality of retaining slots are provided on the side of the positioning square column, which are arranged at equal distances.

3. The metal powder processing and molding device for gears according to claim 2, characterized in that: It includes two retaining square columns, two of which are symmetrically mounted on the sides of the processing table; A retaining square plate is slidably connected to the retaining square column; a retaining spring is sleeved on the retaining square column, one end of which is fixedly connected to the retaining square plate and the other end is connected to a retaining limit plate, and the retaining limit plate is installed at the end of the retaining square column away from the processing table; Retention cross block; the two said retention square plates are connected together at the retention cross block, and a pull ring is installed on the side away from the processing table; the retention cross block and the processing table are provided with contact pieces at the opposite surfaces, and the two contact pieces are electrically connected; The retaining plug is installed on a side of the retaining cross block close to the processing table; the retaining plug passes through the processing table and is connected to one of the retaining slots.

4. The metal powder processing and molding device for gears according to claim 2, characterized in that: It includes a gas delivery hose, one end of which is mounted on the ventilation box, and the other end is mounted with a vertical round tube, the end of which faces the compaction mold and is also slidably connected to a guide cylinder; A second base plate is mounted on the arc-shaped rod body; the second base plate is fixedly connected to the vertical circular tube; a guide horizontal plate is mounted on one end of the guide cylinder close to the compaction mold; A guide spring is sleeved on the guide cylinder; one end of the guide spring is fixedly connected to the second base plate, and the other end is fixedly connected to the guide horizontal plate; a linkage column is installed on the guide horizontal plate, and the top of the compacting mold is located at the moving path of the linkage column.

5. The metal powder processing and molding device for gears according to claim 1, characterized in that: The compacting mold is also provided with a uniform powder stirring mechanism; the uniform powder stirring mechanism includes a third base plate, which is installed on the side of the compacting mold away from the lower mold; A driving gear is mounted on the third base plate; the driving gear is meshed with the vertical rack; An active bevel gear is mounted on the side of the third base plate and is rotatably connected to the driving gear; The driven bevel gear is connected to the compacting die and meshed with the driving bevel gear; a first pulley is also installed on the driven bevel gear.

6. The metal powder processing and molding device for gears according to claim 5, characterized in that: comprising a second pulley mounted on a side of the compacting die away from the lower die; A transmission belt, two ends of which are connected to the second pulley and the first pulley respectively; the transmission belt is in sliding engagement with the second pulley and the first pulley; A cavity is provided in the compaction mold, and a large gear is installed on the second pulley, which is located in the cavity; the large gear is meshed with a plurality of small gears, and a driving shaft is installed on the small gears, and a plurality of stirring rods are connected to the end of the driving shaft away from the cavity; the stirring rods are located on the side of the compaction mold close to the lower mold.

7. A method for processing and molding metal powder for gears, using the metal powder processing and molding device for gears according to claim 1, characterized in that: Including steps: S1. Fill the lower die with the metal powder required for forming the gear, and operate the rotary auxiliary pressure component to reduce the cavity inside the powder; S2. Start the telescopic cylinder to move the upper mold on the output end toward the lower mold and make contact, forming a closed mold cavity to apply pressure to the powder, so that the gear can be pressed into shape.

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