Binder premixing device for MIM metal feeding

Abstract

The utility model provides a binder premixing device for MIM metal feeding, which comprises a tank body, supporting legs and a top cover, the supporting legs are installed on the lower end face of the tank body, the upper end face of the tank body is provided with a premixing bin which is recessed inwards, the bottom face of the premixing bin is provided with a discharge pipe, the discharge pipe penetrates through the tank body downwards and extends out of the tank body, the discharge pipe is connected with an electromagnetic valve, and the electromagnetic valve is connected with a motor. The top cover is detachably installed on the upper end face of the tank body and seals the premixing bin, feeding hoppers are symmetrically arranged on the outer wall of the tank body and communicate with the premixing bin, a plurality of mixing assemblies are arranged on the upper end face of the top cover and extend into the premixing bin, and a vibration machine is installed on the outer wall of the tank body and used for being matched with the mixing assemblies to conduct mixing. Through the arrangement of the material mixing assembly and the vibration machine, the metal feed and the binder can be continuously turned up through the material mixing assembly, the premixing function is achieved, through the vibration cooperation of the vibration machine, the metal feed and the binder are rapidly mixed, the premixing efficiency is improved, and the discharging efficiency can be improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of MIM molding equipment, in particular to a binder premixing device for MIM metal feeding. Background Art

[0002] Metal Injection Molding (MIM) is a new type of powder metallurgy near-net forming technology derived from the plastic injection molding industry. As we all know, plastic injection molding technology can produce various complex shaped products at a low price, but the strength of plastic products is not high. In order to improve its performance, metal or ceramic powder can be added to the plastic to obtain products with higher strength and good wear resistance. In recent years, this idea has evolved to maximize the content of solid particles and completely remove the binder and densify the molded blank during the subsequent sintering process. This new powder metallurgy forming method is called metal injection molding. At present, metal powder and binder need to be mixed before metal injection molding, and a mixing device and a premixing device need to be used. The premixing device can improve the mixing efficiency of the mixing device.

[0003] For example, the patent with application number 201920068497.9 discloses a MIM molded rapid mixer, including a barrel with legs, a motor inverted on the side of the barrel and a two-stage agitator, the top of the barrel is provided with an inlet, the side of the bottom is provided with an outlet, and the middle part of the barrel is detachably installed with a filter plate, the filter plate consists of a horizontal plate with filter holes and a mounting tube located at the center of the horizontal plate, the center of the horizontal plate is provided with a through hole, and the mounting tube is connected to the through hole, the two-stage agitator includes a bottom agitator and an upper agitator, the bottom agitator is rotatably installed at the bottom of the barrel, and the upper agitator is rotatably installed in the mounting tube, the motor is connected to the bottom agitator through a first transmission structure, and the bottom agitator is connected to the upper agitator through a second transmission structure. The utility model is easy to use and has a better stirring effect.

[0004] The inventor believes that the prior art does not have a premixing device, and a large amount of mixing is required during mixing to ensure that the metal powder and the binder are fully mixed, which cannot fully meet production needs. Utility Model Content

[0005] The utility model mainly provides a binder premixing device for MIM metal feeding, which is used to solve the technical problems raised in the above background technology.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] A binder premixing device for MIM metal feeding comprises a tank body, a supporting foot and a top cover, wherein the supporting foot is mounted on the lower end surface of the tank body, the upper end surface of the tank body is provided with an inwardly recessed premixing bin, the bottom surface of the premixing bin is provided with a discharge pipe, the discharge pipe penetrates downwardly through the tank body and extends out of the tank body, the discharge pipe is connected to an electromagnetic valve, the top cover is detachably mounted on the upper end surface of the tank body and closes the premixing bin, the outer wall of the tank body is symmetrically provided with a feed hopper, the feed hopper is connected to the premixing bin, the upper end surface of the top cover is provided with a plurality of mixing components, the mixing components extend into the premixing bin, the outer wall of the tank body is provided with a vibrator, the vibrator is used to cooperate with the mixing components to mix materials.

[0008] Preferably, the mixing assembly includes a motor, a connecting shaft, a mounting shaft and a spiral stirring blade, the motor is mounted on the upper end surface of the top cover, the output end of the motor is arranged downward, the connecting shaft is mounted on the output end of the motor and penetrates downward through the top cover into the premixing bin, the mounting shaft is mounted on the lower end surface of the connecting shaft, and the spiral stirring blade is mounted on the outer wall of the mounting shaft.

[0009] Preferably, a protective shell is installed on the outer wall of the motor.

[0010] Preferably, a first fixing block is symmetrically installed on the outer wall of the top cover, a second fixing block corresponding to the first fixing block is provided on the outer wall of the tank body, a fixing pin is provided on the lower end surface of the first fixing block, a fixing hole matching with the fixing pin is provided on the upper end surface of the second fixing block, a mounting hole communicating with the fixing hole is provided on the outer wall of the second fixing block, a latch is slidably connected in the mounting hole, and a socket matching with the latch is provided on the outer wall of the fixing pin.

[0011] Preferably, the mounting hole is symmetrically provided with sliding grooves, and the outer wall of the latch is provided with a sliding block slidably connected to the sliding grooves.

[0012] Preferably, a spring is provided in the slide groove, and two ends of the spring are fixedly connected to the slider and the slide groove respectively.

[0013] Preferably, the end of the plug extending into the insertion hole is provided with a curved surface.

[0014] Preferably, the bottom surface of the premixing bin is inclined toward the discharge pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By setting up a mixing component and a vibrator, the metal feed and the binder can be continuously turned over by the mixing component to achieve the function of premixing, and the metal feed and the binder can be quickly mixed through the vibration of the vibrator, thereby improving the premixing efficiency and the discharging efficiency;

[0017] 2. By setting the motor, the connecting shaft, the mounting shaft and the spiral stirring blade, the motor can drive the spiral stirring blade to continuously turn over the metal feed and the binder without causing the binder to break and affect the use effect, and ensure that the metal feed and the binder are mixed;

[0018] 3. By providing the first fixing block, the second fixing block, the fixing pin, the fixing hole, the latch and the socket, the top cover can be easily installed and quickly disassembled, thereby improving the efficiency of installation and disassembly.

[0019] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 for Figure 2 Enlarged view of area a.

[0023] In the figure: 1. tank body; 11. premixing bin; 12. discharge pipe; 13. solenoid valve; 14. feed hopper; 15. vibrator; 16. second fixed block; 161. fixing hole; 162. mounting hole; 1621. slide groove; 1622. spring; 163. latch; 1631. slider; 2. support foot; 3. top cover; 31. first fixed block; 32. fixing pin; 321. socket; 4. mixing assembly; 41. motor; 411. protective shell; 42. connecting shaft; 43. mounting shaft; 44. spiral stirring blade. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] Please pay attention to Figures 1 to 3 , a binder premixing device for MIM metal feeding, comprising a tank body 1, a supporting foot 2 and a top cover 3, the supporting foot 2 being installed on the lower end surface of the tank body 1, the upper end surface of the tank body 1 being provided with an inwardly recessed premixing bin 11, the bottom surface of the premixing bin 11 being provided with a discharge pipe 12, the discharge pipe 12 penetrating downwardly through the tank body 1 and extending out of the tank body 1, the discharge pipe 12 being connected with an electromagnetic valve 13, the top cover 3 being detachably installed on the upper end surface of the tank body 1 and closing the premixing bin 11, the outer wall of the tank body 1 being symmetrically provided with a feed hopper 14, the feed hopper 14 being connected to the premixing bin 11, the upper end surface of the top cover 3 being provided with a plurality of mixing components 4, the mixing components 4 extending into the premixing bin 11, the outer wall of the tank body 1 being provided with a vibrator 15, the vibrator 15 being used to cooperate with the mixing component 4 for mixing.

[0028] Specifically, by setting up the mixing component 4 and the vibrator 15, the metal feed and the binder can be continuously turned over by the mixing component 4 to achieve the function of premixing, and the metal feed and the binder can be quickly mixed through the vibration of the vibrator 15, thereby improving the premixing efficiency and the discharge efficiency.

[0029] Please pay attention to Figures 1-2 The mixing assembly 4 includes a motor 41, a connecting shaft 42, a mounting shaft 43 and a spiral stirring blade 44. The motor 41 is mounted on the upper end surface of the top cover 3, and the output end of the motor 41 is arranged downward. The connecting shaft 42 is mounted on the output end of the motor 41 and penetrates the top cover 3 downward to extend into the premixing bin 11. The mounting shaft 43 is mounted on the lower end surface of the connecting shaft 42. The spiral stirring blade 44 is mounted on the outer wall of the mounting shaft 43. By arranging the motor 41, the connecting shaft 42, the mounting shaft 43 and the spiral stirring blade 44, the spiral stirring blade 44 can be driven by the motor 41 to continuously turn over the metal feed and the binder without causing the binder to break and affect the use effect, and ensure that the metal feed and the binder are mixed. The outer wall of the motor 41 is installed with a protective shell 411. By arranging the protective shell 411, the motor 41 can be protected to prevent the motor 41 from being damaged by external force.

[0030] Please pay attention to Figures 1 to 3The outer wall of the top cover 3 is symmetrically installed with a first fixing block 31, and the outer wall of the tank body 1 is provided with a second fixing block 16 corresponding to the first fixing block 31. The lower end surface of the first fixing block 31 is provided with a fixing pin 32, and the upper end surface of the second fixing block 16 is provided with a fixing hole 161 that matches the fixing pin 32. The outer wall of the second fixing block 16 is provided with a mounting hole 162 connected to the fixing hole 161, and a latch 163 is slidably connected in the mounting hole 162. The outer wall of the fixing pin 32 is provided with a plug hole 321 that matches the latch 163. By arranging the first fixing block 31, the second fixing block 16, the fixing pin 32, the fixing hole 161, the latch 163 and the plug hole 321, the top cover 3 can be easily installed, the top cover 3 is convenient for quick disassembly and assembly, and the efficiency of installation and disassembly is improved. The mounting hole 162 is symmetrically provided with a slide groove 1621, and the outer wall of the latch 163 is provided with a slide groove 1621 that matches the slide groove 162 The slider 1631 is slidably connected. By setting the slider 1631 and the slide groove 1621, it is convenient to slide and connect the latch 163, so that the latch 163 can slide in a directional manner and is convenient to fix. The slide groove 1621 is provided with a spring 1622, and the two ends of the spring 1622 are respectively fixedly connected with the slider 1631 and the slide groove 1621. By setting the spring 1622, the latch 163 can be automatically pushed into the insertion hole 321 by the spring 1622, so that the latch 163 automatically locks the fixing pin 32. The end of the latch 163 extending into the insertion hole 321 is provided with an arc surface. By setting the arc surface, when the latch 163 is inserted into the insertion hole 321, the latch 163 can be guided by the arc surface to facilitate the entry of the latch 163 into the insertion hole 321. The bottom surface of the premixing bin 11 is inclined to the discharge pipe 12. By setting the bottom surface of the premixing bin 11 as an inclined setting, the mixed material can be conveniently introduced into the discharge pipe 12, thereby facilitating the discharge.

[0031] The specific operation mode of the utility model is as follows:

[0032] When in use, press the switch to start the motor 41 and the vibrator 15. The motor 41 starts to drive the connecting shaft 42 to rotate, and the connecting shaft 42 drives the installation shaft 43 to rotate. Further, the metal powder and the binder are poured into the premixing bin 11 from the feeding hoppers 14 at the left and right ends respectively, so that the spiral stirring blades 44 flip the metal powder and the binder upward to achieve mixing. The vibrator 15 vibrates to make the metal powder and the binder vibrate and mix continuously to improve the mixing efficiency. Further, the electromagnetic valve 13 is opened to allow the premixed metal powder and binder to be discharged from the discharge pipe 12 and enter the mixer to be fully mixed. When the metal powder and the binder are discharged, the motor 41 and the vibrator 15 are turned off.

[0033] When it is necessary to clean the premixing bin 11, the latch 163 is pulled outward to disengage the latch 163 from the insertion hole 321. At the same time, the latch 163 drives the slider 1631 to slide in the slide groove 1621 and compress the spring 1622. When the latch 163 is completely out of the insertion hole 321, the top cover 3 is taken out upward to disengage the fixing pin 32 from the fixing hole 161, and then the latch 163 is released so that the spring 1622 resets the latch 163. Further, the premixing bin 11 is cleaned. After the cleaning is completed, the top cover 3 is put back. At the same time, the latch 163 is pulled outward to make the latch 163 enter the installation hole 162, and the fixing pin 32 is aligned with the fixing hole 161 and inserted. When the fixing pin 32 is fully inserted into the fixing hole 161, the plug is released so that the spring 1622 pushes the latch 163 into the insertion hole 321 to achieve fixation.

[0034] The above description of the utility model is exemplified in combination with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A binder premixing device for MIM metal feeding, comprising a tank body (1), a support leg (2) and a top cover (3), It is characterized in that The supporting foot (2) is mounted on the lower end surface of the tank body (1); the upper end surface of the tank body (1) is provided with a premixing bin (11) recessed inwardly; the bottom surface of the premixing bin (11) is provided with a discharge pipe (12); the discharge pipe (12) penetrates downwardly through the tank body (1) and extends out of the tank body (1); the discharge pipe (12) is connected to an electromagnetic valve (13); the top cover (3) is detachably mounted on the upper end surface of the tank body (1) and closes the premixing bin (11); the outer wall of the tank body (1) is symmetrically provided with a feed hopper (14); the feed hopper (14) is connected to the premixing bin (11); the upper end surface of the top cover (3) is provided with a plurality of mixing components (4); the mixing components (4) extend into the premixing bin (11); the outer wall of the tank body (1) is provided with a vibrator (15); the vibrator (15) is used to cooperate with the mixing component (4) to mix materials.

2. A binder premixing device for MIM metal feeding according to claim 1, It is characterized in that The mixing assembly (4) comprises a motor (41), a connecting shaft (42), a mounting shaft (43) and a spiral stirring blade (44); the motor (41) is mounted on the upper end surface of the top cover (3); the output end of the motor (41) is arranged downward; the connecting shaft (42) is mounted on the output end of the motor (41) and passes through the top cover (3) downward and extends into the premixing bin (11); the mounting shaft (43) is mounted on the lower end surface of the connecting shaft (42); and the spiral stirring blade (44) is mounted on the outer wall of the mounting shaft (43).

3. A binder premixing device for MIM metal feeding according to claim 2, It is characterized in that A protective shell (411) is installed on the outer wall of the motor (41).

4. A binder premixing device for MIM metal feeding according to claim 1, It is characterized in that A first fixing block (31) is symmetrically mounted on the outer wall of the top cover (3); a second fixing block (16) corresponding to the first fixing block (31) is mounted on the outer wall of the tank body (1); a fixing pin (32) is mounted on the lower end surface of the first fixing block (31); a fixing hole (161) matched with the fixing pin (32) is mounted on the upper end surface of the second fixing block (16); a mounting hole (162) connected to the fixing hole (161) is mounted on the outer wall of the second fixing block (16); a plug pin (163) is slidably connected in the mounting hole (162); and a plug hole (321) matched with the plug pin (163) is mounted on the outer wall of the fixing pin (32).

5. A binder premixing device for MIM metal feeding according to claim 4, It is characterized in that The mounting hole (162) is symmetrically provided with a sliding groove (1621), and the outer wall of the latch (163) is provided with a sliding block (1631) slidably connected to the sliding groove (1621).

6. A binder premixing device for MIM metal feeding according to claim 5, It is characterized in that A spring (1622) is provided in the slide groove (1621), and two ends of the spring (1622) are fixedly connected to the slider (1631) and the slide groove (1621) respectively.

7. A binder premixing device for MIM metal feeding according to claim 4, It is characterized in that One end of the latch pin (163) extending into the insertion hole (321) is provided with a curved surface.

8. A binder premixing device for MIM metal feeding according to claim 1, It is characterized in that The bottom surface of the premixing bin (11) is inclined toward the discharge pipe (12).

Images