A quantitative feeding structure for a die casting machine

Abstract

The present invention discloses a quantitative unloading structure for a die-casting machine, and belongs to the technical field of die-casting machine feeding. It comprises a material box, in which a stirring mechanism is rotatably connected, the stirring mechanism comprises two connecting plates, a plurality of stirring rods are rotatably connected between the two connecting plates, two fixed plates connected and fixed to the material box are arranged on the lower side of the stirring mechanism, a baffle plate is abutted and matched between the two fixed plates, both ends of the baffle plate are fixedly connected to a slide bar, one end of the slide bar passes through the material box and is connected to a driving mechanism. The baffle plate is driven to reciprocate up and down by contact between the driving disk and the guide wheel, and the baffle plate is intermittently contacted with the fixed plate to realize intermittent feeding, and at the same time, the driving disk drives a plurality of stirring rods connected to the connecting disk to rotate, and the stirring rods stir the metal powder in the material box to prevent agglomeration, thereby preventing blockage at the discharge end of the material box, ensuring normal quantitative discharge, and having good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting machine feeding, and more specifically to a quantitative feeding structure of a die-casting machine. Background Art

[0002] The die-casting machine is a process technology that can use metal powder as raw material, and then form and sinter it to manufacture metal materials, composite materials and various types of products. Before use, the die-casting machine needs to be provided with die-casting raw materials through a feeding mechanism. The patent document with the prior art publication number CN216801629U provides a quantitative feeding structure for feeding a die-casting machine. The device is provided with an opening and closing mechanism so that a flip motor can drive a flip baffle to flip, thereby controlling the amount of metal powder fed, and ensuring the quantitative feeding requirements.

[0003] The above-mentioned unloading mechanism still has the following problems during use: metal powder is likely to clump in a humid environment, which may cause the unloading pipe to be blocked, resulting in failure to discharge the material in a normal quantitative manner.

[0004] Although the existing solutions use multiple stirring rods to perform uniform stirring, which effectively avoids the phenomenon of material agglomeration caused by moisture, a vertically liftable plug is usually used to block the feed port during the feed control stage. However, this design causes the extrusion between the plug and the inner wall of the feed port to form the material into a sheet or plate shape. In view of this, we propose a quantitative feed structure for a die-casting machine. Summary of the invention

[0005] 1. Technical problems to be solved

[0006] The object of the present invention is to provide a quantitative feeding structure for a die-casting machine to solve the problems raised in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] A quantitative unloading structure for a die-casting machine comprises a material box, in which a stirring mechanism is rotatably connected, the stirring mechanism comprises two connecting plates, a plurality of stirring rods are rotatably connected between the two connecting plates, two fixed plates connected and fixed to the material box are arranged on the lower side of the stirring mechanism, a material baffle plate is abutted and fitted between the two fixed plates, both ends of the material baffle plate are fixedly connected to sliding rods, the sliding rods are slidably connected to the material box, and one end of the sliding rod passes through the material box and is connected to a driving mechanism, the driving mechanism comprises a connecting rod, a guide wheel is rotatably connected to the connecting rod, and a driving disk connected to the stirring mechanism is movably contacted on the guide wheel.

[0009] The top longitudinal cross-section of the baffle plate is triangular, and the multiple stirring rods are arranged in a ring with equal intervals. The stirring rods are spirally fixed with multiple stirring blades, each stirring blade is designed as a hollow metal tube, and a first heating metal wire is embedded in the body of each hollow metal tube. A plurality of high thermal expansion coefficient raised patterns are arranged on the top of the two fixed plates toward the baffle plate, and a plurality of second heating metal wires are embedded in the baffle plate, and the resistances of the plurality of second heating metal wires are different.

[0010] Preferably, a box cover is hingedly connected to the material box, and a discharge pipe is also fixedly connected to the material box.

[0011] Preferably, the plurality of stirring rods are arranged in a ring shape with equal intervals, and the stirring rods are spirally fixedly connected with a plurality of stirring blades.

[0012] Preferably, an inner ring gear is in sliding contact with the connection disk, the inner ring gear is fixedly connected to the material box, and the end of the stirring rod penetrates into the connection disk and is fixedly connected to a transmission gear, and the transmission gear is meshingly connected to the inner ring gear.

[0013] Preferably, the cross section of the contact end of the baffle plate and the fixing plate is a triangular structure.

[0014] Preferably, a fixing seat is slidably connected to the connecting rod, the fixing seat is fixedly connected to the material box, and a compression spring is sleeved on the connecting rod, and two ends of the compression spring are respectively connected to the end of the connecting rod and the fixing seat.

[0015] Preferably, the driving plate comprises a cam A and a cam B, and both the cam A and the cam B are in rolling contact with the guide wheel.

[0016] Preferably, a rotating shaft is fixedly connected to the cam A, the rotating shaft is rotatably connected to the cam B, and one end of the rotating shaft penetrates into the material box and is fixedly connected to the connecting disk.

[0017] Preferably, an arc-shaped hole is provided on the cam A, a fixing rod fixedly connected to the cam B is provided in the arc-shaped hole, a movable block is slidably connected to the fixing rod, one end of the fixing rod is connected to the movable block through a spring, two clamping blocks are fixedly connected to the movable block, and a plurality of clamping slots are provided on both sides of the arc-shaped hole of the cam A, and the clamping blocks are clamped in cooperation with the clamping slots.

[0018] Preferably, a motor is fixedly mounted on one side of the material box, a worm is fixedly connected to the output end of the motor, a worm wheel is meshingly connected to one side of the worm wheel, and the worm wheel is connected to a driving disk via a coupling shaft.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. The baffle plate of the present invention is embedded with multiple second heating wires with different resistances and multiple first heating resistance wires and convex strips with differentiated thermal expansion coefficients, so that the metal powder will not become sticky or be crushed into a mass during the stirring stage and the unloading stage. The first heating wire heats the metal powder inside so that it cannot form a mass. During the controlled vertical lifting process of the baffle plate 7, the heating power of the multiple second heating wires inside is different, so that the expansion degree of each high thermal expansion coefficient convex pattern is different, so that the material body squeezed into a mass is broken up to different degrees, so that the phenomenon of the material body being squeezed into a block due to repeated contact and extrusion between the baffle plate 7 and the fixed plate 19 is greatly alleviated.

[0022] 2. The present invention drives the baffle plate to reciprocate up and down by contacting the driving disk with the guide wheel. The baffle plate intermittently contacts the fixed plate to realize intermittent feeding. At the same time, the driving disk drives multiple stirring rods connected to the connecting disk to rotate. The stirring rods stir the metal powder in the material box to prevent agglomeration, thereby preventing blockage at the discharge end of the material box, ensuring normal quantitative discharge, and having good practicality.

[0023] 3. When the connecting disk drives the stirring rod to rotate, the transmission gear meshes with the inner ring gear, so that the stirring rod rotates while revolving around the connecting disk, and drives the stirring blade to rotate, thereby further enhancing the stirring effect on the metal powder and effectively breaking up the lumps.

[0024] 4. The present invention cancels the engagement between the card block and the card slot by pulling the limit block, which can drive the cam B to rotate on the shaft, so that the curvature of the protrusion formed by the cooperation of the cam A and the cam B can be increased or decreased, thereby controlling the separation time of the baffle plate and the fixed plate, and further realizing the control of the discharge amount, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the material box of the present invention;

[0027] Figure 3 It is a schematic diagram of the disassembly of the stirring mechanism, inner ring gear and transmission gear structure of the present invention;

[0028] Figure 4 It is a front plan view schematic diagram of the material box, the material baffle plate and the fixing plate structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the driving mechanism and the driving disk structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the disassembly of the drive disk structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the anatomical structure of the fixing block of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the motor, worm and worm gear of the present invention;

[0033] Explanation of the numbers in the figure: 1. Material box; 2. Box cover; 3. Discharge pipe; 4. Stirring mechanism; 401. Connecting plate; 402. Stirring rod; 403. Stirring blade; 5. Inner ring gear; 6. Transmission gear; 7. Material baffle plate; 8. Slide rod; 9. Driving mechanism; 901. Connecting rod; 902. Guide wheel; 903. Fixed seat; 904. Compression spring; 10. Driving plate; 1001. Cam A; 1002. Cam B; 1003. Arc hole; 1004. Slot; 11. Fixed rod; 12. Movable block; 13. Spring; 14. Block; 15. Rotating shaft; 16. Motor; 17. Worm; 18. Worm wheel; 19. Fixed plate. DETAILED DESCRIPTION

[0034] See also Figure 1-8 , the present invention provides a technical solution:

[0035] A quantitative unloading structure for a die-casting machine comprises a material box 1, in which a stirring mechanism 4 is rotatably connected, the stirring mechanism 4 comprises two connecting plates 401, between which a plurality of stirring rods 402 are rotatably connected, and the lower side of the stirring mechanism 4 is provided with two fixed plates 19 connected and fixed to the material box 1, between which a baffle plate 7 is abutted and fitted, and both ends of the baffle plate 7 are fixedly connected to a slide bar 8, the slide bar 8 is slidably connected to the material box 1, and one end of the slide bar 8 passes through the material box 1 and is connected to a driving mechanism 9, and the driving mechanism 9 comprises a connecting rod 901, on which a guide wheel 902 is rotatably connected, and on which a driving disk 10 connected to the stirring mechanism 4 is movably contacted.

[0036] The top longitudinal section of the baffle plate 7 is triangular, and the multiple stirring rods 402 are arranged in a ring with equal intervals. The stirring rods 402 are spirally fixed with multiple stirring blades 403, and each stirring blade 403 is designed as a hollow metal tube. A first heating metal wire is embedded in the body of each hollow metal tube. A plurality of flexible high thermal expansion coefficient raised patterns are arranged on the two fixed plates 19 toward the top of the baffle plate 7, and a plurality of second heating metal wires are embedded in the baffle plate 7, and the resistances of the plurality of second heating metal wires are different. This design prevents the metal powder from becoming sticky or being crushed into a mass during the stirring stage and the unloading stage. The first heating metal wire heats the metal powder inside so that it cannot form a mass. During the controlled vertical lifting of the baffle plate 7, the heating powers of the multiple second heating metal wires therein are different, so that the expansion degrees of each high thermal expansion coefficient raised pattern are different, so that the material body squeezed into a mass is broken up to different degrees, thereby greatly alleviating the phenomenon of the material body being squeezed into blocks due to repeated contact and extrusion between the baffle plate 7 and the fixed plate 19.

[0037] In the present technical solution, when the driving disk 10 rotates, the protrusion contacts the guide wheel 902, which can drive the baffle plate 7 connected to the slide rod 8 to descend. After the contact between the baffle plate 7 and the fixed plate 19 is cancelled, the metal powder in the material box 1 is discharged to the lower side through the two fixed plates 19. The driving disk 10 also drives the stirring mechanism 4 to rotate, so that the stirring rod 402 rotates to stir the metal powder, which can break up the agglomerated metal powder and prevent blockage between the two fixed plates 19.

[0038] Specifically, a box cover 2 is hinged on the material box 1 , and a discharge pipe 3 is also fixedly connected to the material box 1 .

[0039] In this technical solution, a sealing gasket is fixedly provided at the contact portion between the cover plate 2 and the material box 1, which can increase the sealing performance of the material box 1 and reduce the possibility of the metal powder being damp and agglomerated;

[0040] The end of the discharge pipe 3 is connected to the material input end of the die casting machine.

[0041] Furthermore, the plurality of stirring rods 402 are arranged in a ring shape with equal intervals, and the stirring rods 402 are fixedly connected with a plurality of stirring blades 403 in a spiral manner.

[0042] In this technical solution, the stirring rod 402 drives the stirring blade 403 to perform an orbital motion around the connecting disk 401 to break up the agglomerated metal powder.

[0043] Furthermore, an inner ring gear 5 is in sliding contact with the connecting disk 401 , the inner ring gear 5 is fixedly connected to the material box 1 , and the end of the stirring rod 402 passes through the connecting disk 401 and is fixedly connected to the transmission gear 6 , which is meshingly connected to the inner ring gear 5 .

[0044] In this technical solution, the transmission gear 6 meshes with the inner ring gear 5 to drive the stirring rod 402 to rotate, so that the stirring blade 403 rotates, further increasing the stirring effect.

[0045] Furthermore, the cross section of the contact end of the blocking plate 7 and the fixing plate 19 is a triangular structure.

[0046] In this technical solution, Figure 4 As shown, the contact surfaces of the baffle plate 7 and the fixing plate 19 are non-vertical surfaces, which can effectively prevent metal powder from adhering to the baffle plate 7 and the fixing plate 19.

[0047] Furthermore, a fixing seat 903 is slidably connected to the connecting rod 901 , and the fixing seat 903 is fixedly connected to the material box 1 . A compression spring 904 is sleeved on the connecting rod 901 , and both ends of the compression spring 904 are respectively connected to the end of the connecting rod 901 and the fixing seat 903 .

[0048] In this technical solution, the connecting rod 901 can drive the slider 8 to descend, and after the pressure of the compression spring 904 is released, it drives the connecting rod 901 and the slider 8 to reset, thereby driving the baffle plate 7 to reciprocate.

[0049] Furthermore, the driving disk 10 includes a cam A1001 and a cam B1002 , and both the cam A1001 and the cam B1002 are in rolling contact with the guide wheel 902 .

[0050] In this technical solution, when the protruding parts of cam A1001 and cam B1002 contact the guide wheel 902 , the guide wheel 902 and the connecting rod 901 can be driven to move downward on the fixed seat 903 .

[0051] Furthermore, a rotating shaft 15 is fixedly connected to the cam A1001 , the rotating shaft 15 is rotatably connected to the cam B1002 , and one end of the rotating shaft 15 passes through the material box 1 and is fixedly connected to the connecting disk 401 .

[0052] In this technical solution, the cam A1001 drives the baffle plate 7 to reciprocate up and down while driving the connecting plate 401 and the stirring rod 402 to rotate through the rotating shaft 15. The structure is compact and power output is saved.

[0053] Furthermore, an arc-shaped hole 1003 is provided on the cam A1001, and a fixed rod 11 fixedly connected to the cam B1002 is provided in the arc-shaped hole 1003. A movable block 12 is slidably connected to the fixed rod 11. One end of the fixed rod 11 is connected to the movable block 12 through a spring 13. Two clamping blocks 14 are fixedly connected to the movable block 12. The cam A1001 is located on both sides of the arc-shaped hole 1003 and a plurality of clamping grooves 1004 are provided. The clamping blocks 14 are clamped in cooperation with the clamping grooves 1004.

[0054] In this technical solution, after the engagement between the block 14 and the slot 1004 is cancelled, pulling the limit block 12 can drive the cam B1002 to rotate, so that the curvature of the protrusion formed by the cam A1001 and the cam B1002 increases, which can increase or decrease the time for the material blocking plate 7 to separate from the fixed plate 19, thereby changing the amount of material discharged.

[0055] In addition, a motor 16 is fixedly installed on one side of the material box 1, a worm 17 is fixedly connected to the output end of the motor 16, a worm wheel 18 is meshedly connected to one side of the worm 17, and the worm wheel 18 is connected to a driving disc 10 through a coupling shaft.

[0056] The quantitative unloading structure of the die-casting machine recorded in the present application document is that when unloading is needed, the motor 16 drives the worm wheel 18 meshing with the worm 17 to rotate, and the worm wheel 18 drives one of the driving disks 10 to rotate. On the one hand, the driving disk 10 cooperates with the rotating shaft 15 to drive the stirring mechanism 4 to rotate, and the stirring rod 402 rotates to stir the metal powder. The stirring rod 402 is driven to rotate by the meshing of the transmission gear 6 and the inner ring gear 5, so that the stirring blade 403 rotates, further increasing the stirring effect, and the agglomerated metal powder can be broken up. On the other hand, when the protrusions of cam A1001 and cam B1002 contact the guide wheel 902, the guide wheel 902 and the connecting rod 901 can be driven to descend, so that the contact between the baffle plate 7 connected to the slide bar 8 and the fixed plate 19 is cancelled, and the metal powder is discharged to the discharge pipe 3 between the two fixed plates 19, and the discharge pipe 3 transports the die-casting raw materials into the die-casting machine.

[0057] When the protrusions of cam A1001 and cam B1002 are no longer in contact with the guide wheel 902, the pressure of the compression spring 904 is released to drive the connecting rod 901 and the slider 8 to reset, so that the baffle plate 7 abuts against the fixed plate 19 to prevent the metal powder from being discharged to the outside.

[0058] The baffle plate 7 is embedded with multiple second heating wires, and the resistances of the multiple second heating wires are different. This design prevents the metal powder from sticking or being crushed into a mass during the stirring stage and the unloading stage. The first heating wire heats the metal powder inside so that it cannot form a mass. During the controlled vertical lifting process of the baffle plate 7, the heating powers of the multiple second heating wires inside are different, so that the expansion degrees of each high thermal expansion coefficient raised pattern are different, so that the material body squeezed into a mass is broken up to different degrees, so that the phenomenon of the material body being squeezed into a block due to repeated contact and extrusion between the baffle plate 7 and the fixed plate 19 is greatly alleviated.

Claims

1. A quantitative material feeding structure for a die casting machine, comprising a material box, characterized in that: A stirring mechanism is rotatably connected in the material box, and the stirring mechanism includes two connecting plates, and a plurality of stirring rods are rotatably connected between the two connecting plates. Two fixed plates connected and fixed to the material box are arranged on the lower side of the stirring mechanism, and a material baffle plate is abutted and matched between the two fixed plates, and both ends of the material baffle plate are fixedly connected to a sliding rod, and the sliding rod is slidably connected to the material box, and one end of the sliding rod passes through the material box and is connected to a driving mechanism, and the driving mechanism includes a connecting rod, and a guide wheel is rotatably connected to the connecting rod, and a driving disk connected to the stirring mechanism is movably contacted on the guide wheel; The top longitudinal section of the baffle plate is triangular, the plurality of stirring rods are arranged in a ring with equal spacing, the stirring rods are spirally fixedly connected with a plurality of stirring blades, each stirring blade is designed as a hollow metal tube, a first heating wire is embedded in the body of each hollow metal tube, a plurality of high thermal expansion coefficient convex lines are arranged on the top of the two fixed plates toward the baffle plate, a plurality of second heating wires are embedded in the baffle plate, and the resistances of the plurality of second heating wires are different; An inner ring gear is in sliding contact with the connecting disk, the inner ring gear is connected and fixed with the material box, and the end of the stirring rod passes through the connecting disk and is fixedly connected with a transmission gear, and the transmission gear is meshed and connected with the inner ring gear; a fixed seat is slidably connected to the connecting rod, the fixed seat is connected and fixed with the material box, and a compression spring is sleeved on the connecting rod, and the two ends of the compression spring are respectively connected with the end of the connecting rod and the fixed seat; the driving disk includes a cam A and a cam B, and the cam A and cam B are both in rolling contact with the guide wheel; A motor is fixedly mounted on one side of the material box, a worm is fixedly connected to the output end of the motor, a worm wheel is meshingly connected to one side of the worm, and the worm wheel is connected to a driving disc through a coupling shaft.

2. The quantitative feeding structure of the die casting machine according to claim 1, characterized in that: A box cover is hingedly connected to the material box, and a discharge pipe is fixedly connected to the material box.

3. The quantitative feeding structure of the die casting machine according to claim 1, characterized in that: Each stirring blade is designed with thin metal walls and hollow core.

4. The quantitative feeding structure of the die casting machine according to claim 1, characterized in that: The cross section of the contact end of the baffle plate and the fixing plate is in a triangular structure.

5. The quantitative feeding structure of the die casting machine according to claim 1, characterized in that: The cam A is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with the cam B, and one end of the rotating shaft penetrates into the material box and is fixedly connected with the connecting disk.

6. The quantitative feeding structure of the die casting machine according to claim 5, characterized in that: An arc-shaped hole is provided on the cam A, and a fixing rod fixedly connected to the cam B is provided in the arc-shaped hole. A movable block is slidably connected to the fixing rod, and one end of the fixing rod is connected to the movable block through a spring. Two clamping blocks are fixedly connected to the movable block. A plurality of clamping grooves are provided on both sides of the arc-shaped hole of the cam A, and the clamping blocks are clamped in cooperation with the clamping grooves.

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