Parallel type powder weighing device

Abstract

The utility model discloses a parallel type powder weighing device, and relates to the technical field of powder weighing, the parallel type powder weighing device comprises a feed pipe, at least two blanking pipes, a feed hopper, a vibration mechanism, a material weighing box and a material weighing mechanism, the number of the blanking pipes is at least two, the blanking pipes are communicated with the feed pipe, and all the blanking pipes are connected in parallel; the number of the feeding hoppers, the number of the vibration mechanisms, the number of the material weighing boxes and the number of the material weighing mechanisms are the same as the number of the discharging pipes, the feeding hoppers are connected to the lower portions of the discharging pipes in a one-to-one correspondence mode, and each feeding hopper is in transmission connection with one vibration mechanism; the material weighing boxes are arranged below discharging ports of the feeding hoppers in a one-to-one correspondence mode, and each material weighing box is provided with one material weighing mechanism used for detecting the weight of powder in the material weighing box. According to the powder weighing device, powder can be weighed by the multiple weighing boxes, and the powder weighing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of powder weighing technology, in particular to a parallel powder weighing device. Background Art

[0002] Powder molding technology is a processing method that places powder in a mold and presses the powder to form parts. It is often used for the molding of resin and metal parts. The powder weighing device is an important component used in powder molding technology. The powder is weighed by the powder weighing device before entering the mold for molding, which makes it easier to control the quality of the powder during processing and is beneficial to the production of workpieces.

[0003] The Chinese patent application number CN201420467501.6 discloses a fully automatic magnetic field forming press powder weighing device, which includes a frame, a barrel, a feeding channel, a hopper, a weighing sensor, a vibration mechanism and a powder pouring mechanism. The powder enters the feeding channel through the barrel and then enters the hopper. The weighing sensor weighs the powder in the hopper. When the heavy sensor detects that the weight of the powder in the hopper reaches the set value, the feeding channel is cut off, the hopper is flipped over and the powder is poured out.

[0004] In the above-mentioned powder weighing device, the powder weighing device can only weigh the powder in one hopper at a time, and its powder weighing efficiency is low. Summary of the invention

[0005] The utility model aims to provide a parallel powder weighing device, which can improve the efficiency of powder weighing.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] The utility model provides a parallel type powder weighing device, which comprises a feed pipe, a discharge pipe, a feeding hopper, a vibration mechanism, a weighing box and a weighing mechanism. At least two discharge pipes are provided, and the discharge pipes are all connected to the feed pipe and all the discharge pipes are connected in parallel with each other; the number of the feeding hoppers, the number of the vibration mechanisms, the number of the weighing boxes and the number of the weighing mechanisms are the same as the number of the discharge pipes, the feeding hoppers are connected one-to-one below the discharge pipes, and each of the feeding hoppers is transmission-connected with one of the vibration mechanisms; the weighing boxes are arranged one-to-one below the discharge port of the feeding hopper, and each of the weighing boxes is provided with a weighing mechanism for detecting the weight of the powder in the weighing box.

[0008] Furthermore, the feed pipe includes a first pipe section and a second pipe section connected from top to bottom, the first pipe section is connected to the feed pipe, the first pipe section is inclined downward in a direction away from the feed pipe, the second pipe section is vertically arranged, and the feeding hopper is connected below the second pipe section.

[0009] Furthermore, the parallel powder weighing device also includes a pneumatic butterfly valve, which is fixed to the second pipe section, and the valve core of the pneumatic butterfly valve can rotate in the second pipe section to open or block the second pipe section.

[0010] Furthermore, a mounting plate is connected to the outer periphery of the feed pipe, and a vibration motor is fixedly arranged on the mounting plate.

[0011] Furthermore, a powder blocking mechanism is provided at the discharge port of the feed hopper, and the powder blocking mechanism includes a front powder blocking plate, a lower powder blocking plate and a baffle driving component. The front powder blocking plate is enclosed at the discharge port of the feed hopper and forms an opening facing downward, the lower powder blocking plate is provided below the front powder blocking plate, and the baffle driving component is connected to the lower powder blocking plate. The baffle driving component can drive the lower powder blocking plate to move relative to the front powder blocking plate to open or close the lower opening of the front powder blocking plate.

[0012] Furthermore, a support frame is provided below the baffle driving member, and the baffle driving member is fixed to the support frame; the lower powder baffle plate is hinged to the driving end of the baffle driving member, and the baffle driving member can push the lower powder baffle plate to extend out of the support frame.

[0013] Furthermore, the powder blocking mechanism also includes a powder blocking sieve plate, which can be vertically movably arranged at the discharge port of the feeding hopper, and a plurality of powder screening holes are arranged on the powder blocking sieve plate.

[0014] Furthermore, the weighing mechanism includes a bottom plate and a weighing sensor, the weighing sensor is arranged on the bottom plate, and the weighing box is arranged above the bottom plate.

[0015] Furthermore, the parallel powder weighing device also includes a flipping mechanism and a lower powder tube, the flipping mechanism includes a driving cylinder and a base, the cylinder body of the driving cylinder is hinged to the base, the driving end of the driving cylinder is hinged to the weighing box, and the weighing box is hinged to the bottom plate; the weighing box has an opening at one end away from the driving cylinder, and the lower powder tube is arranged below the opening of the weighing box.

[0016] Furthermore, the bottom plate is arranged to be inclined downward in a direction away from the lower powder pipe.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. In the parallel type powder weighing device of the utility model, the powder enters at least two feeding pipes through a feeding port at the same time, and enters the feeding hopper through the feeding pipe. Each feeding hopper is vibrated by a vibration mechanism so that the powder flows out from the discharge port of the feeding hopper into the weighing box. The weighing mechanism at each weighing box weighs the powder in the weighing box symmetrically; thus, the parallel type powder weighing device can weigh the powder through at least two weighing boxes, thereby improving the powder weighing efficiency;

[0019] 2. The feed pipe includes a first pipe section and a second pipe section. The first pipe section is tilted downward in a direction away from the feed pipe. This connection mode facilitates the connection of at least two first pipe sections with the feed pipe. At the same time, the downwardly tilted first pipe section allows the powder in the first pipe section to flow downward into the second pipe section under the action of its own weight, so that the powder is not easy to accumulate in the first pipe section and block the first pipe section.

[0020] 3. A mounting plate and a vibration motor are arranged on the periphery of the feed pipe. When the vibration motor is working, the vibration is transmitted to the feed pipe and the discharge pipe, so that the powder can smoothly enter the feeding hopper from the feed pipe and the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of a parallel powder weighing device of one embodiment of the utility model.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of a parallel type powder weighing device according to one embodiment of the utility model.

[0023] Figure 3 The three-dimensional structure diagram of the powder blocking mechanism of one embodiment of the utility model is shown in FIG. Figure 1 .

[0024] Figure 4 The three-dimensional structure diagram of the powder blocking mechanism of one embodiment of the utility model is shown in FIG. Figure 2 .

[0025] In the figure:

[0026] 1000, parallel type powder weighing device; 100, frame; 200, feed pipe; 210, mounting plate; 220, vibration motor; 300, feed pipe; 310, first pipe section; 320, second pipe section; 330, pneumatic butterfly valve; 400, feed hopper; 410, discharge port; 500, vibration mechanism; 600, weighing box; 700, weighing mechanism; 710, bottom plate; 720, sensor; 730, powder pipe; 740, flip mechanism; 741, driving cylinder; 742, base; 800, powder blocking mechanism; 810, front powder blocking plate; 820, lower powder blocking plate; 830, baffle driving member; 840, powder blocking sieve plate; 841, powder sieve hole; 850, support frame; 860, vertical lifting cylinder. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] This embodiment discloses a parallel type powder weighing device 1000, referring to Figure 1 and Figure 2 The parallel powder weighing device 1000 includes a frame 100 and a feed pipe 200, a feed pipe 300, a feeding hopper 400, a vibration mechanism 500, a weighing box 600 and a weighing mechanism 700 arranged on the frame 100. The upper end of the feed pipe 200 is opened for powder to enter, and the feed pipe 300 is connected to the lower part of the feed pipe 200 and communicated with the feed pipe 200. The feeding hopper 400 is arranged below the feed pipe 300, and the inner cavity of the feed hopper 400 is communicated with the lower end opening of the feed pipe 300. The vibration mechanism 500 is transmission-connected to the feed hopper 400, and a discharge port 410 is arranged at the end of the feed hopper 400. The weighing box 600 is arranged below the discharge port 410 of the feed hopper 400, and the weighing mechanism 700 is arranged at the weighing box 600.

[0029] When using the parallel powder weighing device 1000, powder is added from the top of the feed pipe 200 and enters the feed hopper 400 through the discharge pipe 300. The vibration mechanism 500 generates vibration and transmits the vibration to the feed hopper 400, so that the powder in the feed hopper 400 enters the weighing box 600 from the discharge port 410 of the feed hopper 400 under vibration. The weighing mechanism 700 is used to detect the weight of the powder in the weighing box 600.

[0030] At least two feeding pipes 300 are provided, and all the feeding pipes 300 are connected to the feeding pipe 200 and all the feeding pipes 300 are connected in parallel. The number of feeding hoppers 400, the number of vibration mechanisms 500, the number of weighing boxes 600 and the number of weighing mechanisms 700 are the same as the number of feeding pipes 300. The feeding hoppers 400 are connected to the bottom of the feeding pipes 300 in a one-to-one correspondence, and each feeding hopper 400 is connected to a vibration mechanism 500 in a transmission manner. The weighing boxes 600 are arranged in a one-to-one correspondence below the discharge port 410 of the feeding hopper 400, and each weighing box 600 is provided with a weighing mechanism 700.

[0031] The “one-to-one correspondence” here means that each feed tube 300 has one and only one feed hopper 400 connected thereto; and each feed hopper 400 has one and only one weighing box 600 below the discharge port 410 .

[0032] In this embodiment, two lower material pipes 300 are specifically arranged in parallel. Correspondingly, the number of feeding hoppers 400, the number of vibration mechanisms 500, the number of weighing boxes 600 and the number of weighing mechanisms 700 are all two.

[0033] Reference Figure 1 and Figure 2The feed pipe 200 is vertically arranged, and a mounting plate 210 is connected to the outer periphery of the feed pipe 200. The mounting plate 210 is horizontally arranged, and a vibration motor 220 is fixedly arranged on the mounting plate 210. The vibration motor 220 generates vibration when working, and the vibration is transmitted to the feed pipe 200 through the mounting plate 210, so that the powder can smoothly enter the feeding hopper 400 from the feed pipe 200 and the discharge pipe 300.

[0034] The feed pipe 300 includes a first pipe section 310 and a second pipe section 320 connected from top to bottom. The first pipe section 310 is connected to the feed pipe 200, and the first pipe section 310 is tilted downward in a direction away from the feed pipe 200, so that the feed pipe 200 and the two first pipe sections 310 are connected in a Y shape. In this way, there is enough space for two or more first pipe sections 310 to be connected to the lower end of the feed pipe 200, and the tilted first pipe section 310 allows the powder in the first pipe section 310 to enter the second pipe section 320 under its own weight or the vibration of the vibration motor 220, and the powder is not easy to accumulate in the first pipe section 310 and block the first pipe section 310.

[0035] The second pipe section 320 is made of a silicone tube or a hose made of other materials to facilitate connection with the first pipe section 310 .

[0036] The lower end of the second pipe section 320 is connected to the feeding hopper 400 . The second pipe section 320 is vertically arranged to facilitate the powder to enter the feeding hopper 400 , while reducing the space occupied by the second pipe section 320 and facilitating the arrangement of the second pipe section 320 .

[0037] Pneumatic butterfly valves 330 are fixedly arranged on the two second pipe sections 320. Specifically, the second pipe section 320 is in the form of two separate upper and lower sections, and the upper and lower ends of the pneumatic butterfly valve 330 are respectively connected to the second pipe section 320 through flanges. The valve core of the pneumatic butterfly valve 330 can rotate in the second pipe section 320, thereby changing the flow area of ​​the second pipe section 320 to open or block the second pipe section 320.

[0038] The feeding hopper 400 is a long trough-shaped component, the upper side of the feeding hopper 400 is open, and the lower end of the second pipe section 320 is located at one end of the upper side of the feeding hopper 400. The discharge port 410 is arranged at one end of the feeding hopper 400 away from the second pipe section 320. The inner bottom wall of the feeding hopper 400 is inclined downward in the direction close to the discharge port 410 of the feeding hopper 400, that is, from the second pipe section 320 to the discharge port 410 of the feeding hopper 400, the inner bottom wall of the feeding hopper 400 is inclined downward, so that the powder entering the feeding hopper 400 through the second pipe section 320 can flow out from the discharge port 410 of the feeding hopper 400 to the weighing box 600 under the vibration of the vibration mechanism 500.

[0039] Reference Figures 2 to 4, a powder blocking mechanism 800 is provided at the discharge port 410 of each feeding hopper 400. The powder blocking mechanism 800 includes a front powder blocking plate 810, a lower powder blocking plate 820, a baffle driving member 830 and a powder blocking screen plate 840. The front powder blocking plate 810 is enclosed in front of the discharge port 410 of the feeding hopper 400 and forms an opening of the weighing box 600 facing downward. The lower powder blocking plate 820 is arranged below the front powder blocking plate 810, and the baffle driving member 830 is connected to the lower powder blocking plate 820. The baffle driving member 830 can drive the lower powder blocking plate 820 to move relative to the front powder blocking plate 810 to open or close the lower opening of the front powder blocking plate 810.

[0040] Specifically, in this embodiment, a support frame 850 is provided below the baffle driving member 830, and the support frame 850 is fixed on the frame 100. The baffle driving member 830 is fixed to the support frame 850, and the lower powder baffle plate 820 is hinged to the driving end of the baffle driving member 830.

[0041] Initially, the lower powder baffle plate 820 is located on the support frame 850 and supported by the support frame 850. The lower powder baffle plate 820 is located at the lower opening of the front powder baffle plate 810 to block the lower opening of the front powder baffle plate 810, so that the powder in the feed hopper 400 cannot enter the weighing box 600. When the powder needs to be added to the weighing box 600 for weighing, the baffle driving member 830 drives the lower powder baffle plate 820 to move so that the lower powder baffle plate 820 extends out of the support frame 850. After the lower powder baffle plate 820 loses the support of the support frame 850, the lower powder baffle plate 820 rotates downward around the hinge with the baffle driving member 830 under the action of gravity, thereby opening the lower opening of the front powder baffle plate 810, and the powder in the feed hopper 400 can enter the weighing box 600. In this embodiment, the lower powder baffle plate 820 is opened by rotating, so that the powder is not easy to accumulate on the lower powder baffle plate 820. In addition, in other embodiments, the lower powder baffle plate 820 can also be directly fixedly connected to the driving end of the baffle driving component 830, and the baffle driving component 830 drives the lower powder baffle plate 820 to slide back and forth to open or cover the lower opening of the front powder baffle plate 810.

[0042] In this embodiment, the baffle driving member 830 is specifically a cylinder, the cylinder body of the baffle driving member 830 is fixed on the support frame 850, the piston rod of the baffle driving member 830 is connected to a connecting block, and the lower powder baffle plate 820 is hinged to the connecting block.

[0043] The powder blocking screen plate 840 is arranged at the discharge port 410 of the feeding hopper 400. A plurality of powder screening holes 841 are arranged on the powder blocking screen plate 840, and the screening screen shields the discharge port 410 of the feeding hopper 400 to limit the volume of the powder flowing out of the discharge port 410 of the feeding hopper 400, and to prevent the influence of the weighing mechanism 700 when a large piece of powder falls into the weighing box 600.

[0044] A vertical lifting cylinder 860 is connected above the powder blocking screen plate 840, the cylinder body of the vertical lifting cylinder 860 is fixed to the frame 100, and the piston rod of the vertical lifting cylinder 860 is connected to the powder blocking screen plate 840. The vertical lifting cylinder 860 can control the lifting of the powder blocking screen plate 840 so that the powder blocking screen plate 840 is moved away from the discharge port 410 of the feeding hopper 400, thereby cleaning the powder accumulated at the powder blocking screen plate 840.

[0045] The vibration mechanism 500 in this embodiment is the same as that in the prior art and will not be described in detail here.

[0046] Reference Figure 1 and Figure 2 The weighing mechanism 700 includes a bottom plate 710 and a weighing sensor 720. The weighing sensor 720 is connected below the bottom plate 710, the bottom plate 710 is fixed on the frame 100, and the weighing box 600 is arranged above the bottom plate 710.

[0047] In this embodiment, the two bottom plates 710 are arranged on the same straight line. Two lower powder pipes 730 are arranged side by side between the ends of the two bottom plates 710 facing each other, and a flip mechanism 740 is provided at each end of the two bottom plates 710 that are away from each other. The flip mechanism 740 includes a driving cylinder 741 and a base 742. The base 742 is fixed on the frame 100, the cylinder body of the driving cylinder 741 is hinged to the base 742, and the driving end of the driving cylinder 741 is hinged to the weighing box 600. The end of the weighing box 600 away from the driving cylinder 741 is hinged to the end of the bottom plate 710 close to the lower powder pipe 730.

[0048] The weighing box 600 has an opening at one end away from the driving cylinder 741, and the lower powder tube 730 is arranged below the opening of the weighing box 600. Therefore, when the lining material sensor 720 detects that the weight of the powder in the weighing box 600 reaches the set value, the baffle driving member 830 drives the lower powder baffle plate 820 to cover the lower opening of the front powder baffle plate 810, and the driving cylinder 741 pushes the weighing box 600 so that the weighing box 600 rotates along the hinge between the weighing box 600 and the bottom plate 710, thereby making the opening at the end of the weighing box 600 tilt downward, and the powder in the weighing box 600 is poured into the lower powder tube 730 for subsequent molding process.

[0049] In this embodiment, the bottom plate 710 is tilted downward in a direction away from the lower powder tube 730, so that when the weighing box 600 is placed on the bottom plate 710, the weighing box 600 is tilted downward in a direction away from the lower powder tube 730, and the end opening of the weighing box 600 faces obliquely upward to prevent the powder from flowing out of the weighing box 600 when the powder is weighed.

[0050] The implementation principle of the parallel powder weighing device 1000 of this embodiment is:

[0051] When the parallel powder weighing device 1000 is used to weigh powder, the powder enters from the feed pipe 200, and enters the two feeding hoppers 400 respectively through the two parallel feeding pipes 300. The baffle driving member 830 at the discharge port 410 of the feeding hopper 400 drives the lower powder baffle plate 820 to move so that the lower powder baffle plate 820 rotates to open the lower opening of the front powder baffle plate 810. The powder in the feeding hopper 400 falls into the weighing box 600 under the vibration of the vibration mechanism 500, and the weighing sensor 720 weighs the powder in the weighing box 600. When the powder in the weighing box 600 reaches the set amount, the powder baffle driving member drives the lower powder baffle plate 820 to block the lower opening of the front powder baffle plate 810, and drives the cylinder 741 to push the weighing box 600 so that the weighing box 600 turns over and pours the powder into the lower powder pipe 730.

[0052] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A parallel powder weighing device, characterized in that: The parallel powder weighing device (1000) comprises a feed pipe (200), a feed pipe (300), a feeding hopper (400), a vibration mechanism (500), a weighing box (600) and a weighing mechanism (700), wherein at least two feed pipes (300) are provided, each of the feed pipes (300) is connected to the feed pipe (200) and all the feed pipes (300) are connected in parallel with each other; the number of the feeding hoppers (400), the number of the vibration mechanisms (500), the number of the weighing boxes (600) and the weighing mechanism (700) are controlled. The number of the material mechanisms (700) is the same as the number of the feed tubes (300); the feed hoppers (400) are connected one-to-one to the bottom of the feed tubes (300); each of the feed hoppers (400) is transmission-connected to one of the vibration mechanisms (500); the weighing boxes (600) are arranged one-to-one below the discharge port (410) of the feed hoppers (400); each of the weighing boxes (600) is provided with a weighing mechanism (700) for detecting the weight of the powder in the weighing box (600).

2. A parallel type powder weighing device as claimed in claim 1, characterized in that: The feed pipe (300) includes a first pipe section (310) and a second pipe section (320) connected from top to bottom, wherein the first pipe section (310) is connected to the feed pipe (200), the first pipe section (310) is inclined downward in a direction away from the feed pipe (200), and the second pipe section (320) is vertically arranged, and the feeding hopper (400) is connected below the second pipe section (320).

3. A parallel type powder weighing device as claimed in claim 2, characterized in that: The parallel powder weighing device (1000) further comprises a pneumatic butterfly valve (330), wherein the pneumatic butterfly valve (330) is fixed to the second pipe section (320), and the valve core of the pneumatic butterfly valve (330) can rotate within the second pipe section (320) to open or block the second pipe section (320).

4. A parallel type powder weighing device as claimed in claim 2, characterized in that: The outer periphery of the feed pipe (200) is connected to a mounting plate (210), and a vibration motor (220) is fixedly arranged on the mounting plate (210).

5. A parallel type powder weighing device as claimed in claim 1, characterized in that: A powder blocking mechanism (800) is provided at the discharge port (410) of the feed hopper (400), and the powder blocking mechanism (800) includes a front powder blocking plate (810), a lower powder blocking plate (820) and a baffle driving member (830). The front powder blocking plate (810) is enclosed at the discharge port (410) of the feed hopper (400) and forms an opening facing downward, the lower powder blocking plate (820) is provided below the front powder blocking plate (810), and the baffle driving member (830) is connected to the lower powder blocking plate (820). The baffle driving member (830) can drive the lower powder blocking plate (820) to move relative to the front powder blocking plate (810) to open or close the lower opening of the front powder blocking plate (810).

6. A parallel type powder weighing device as claimed in claim 5, characterized in that: A support frame (850) is arranged below the baffle driving member (830), and the baffle driving member (830) is fixed to the support frame (850); the lower powder baffle plate (820) is hinged to the driving end of the baffle driving member (830), and the baffle driving member (830) can push the lower powder baffle plate (820) to extend out of the support frame (850).

7. A parallel type powder weighing device as claimed in claim 5, characterized in that: The powder blocking mechanism (800) further comprises a powder blocking sieve plate (840), wherein the powder blocking sieve plate (840) can be vertically movably arranged at the discharge port (410) of the feeding hopper (400), and a plurality of powder screening holes (841) are arranged on the powder blocking sieve plate (840).

8. A parallel type powder weighing device as claimed in claim 1, characterized in that: The weighing mechanism (700) comprises a bottom plate (710) and a weighing sensor (720), wherein the weighing sensor (720) is arranged on the bottom plate (710), and the weighing box (600) is arranged above the bottom plate (710).

9. A parallel type powder weighing device as claimed in claim 8, characterized in that: The parallel powder weighing device (1000) further comprises a flipping mechanism (740) and a lower powder pipe (730), wherein the flipping mechanism (740) comprises a driving cylinder (741) and a base (742), wherein the cylinder body of the driving cylinder (741) is hinged to the base (742), the driving end of the driving cylinder (741) is hinged to the weighing box (600), and the weighing box (600) is hinged to the bottom plate (710); the weighing box (600) has an opening at one end away from the driving cylinder (741), and the lower powder pipe (730) is arranged below the opening of the weighing box (600).

10. A parallel type powder weighing device as claimed in claim 9, characterized in that: The bottom plate (710) is arranged to be inclined downward in a direction away from the lower powder pipe (730).

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