Feeding mechanism of dry powder press

Abstract

The utility model relates to the technical field of dry powder forming equipment, in particular to a feeding mechanism of a dry powder press. The feeding mechanism comprises a driving device and a feeding box, the feeding box is provided with a feeding port, a feeding chamber and a vibration chamber which can be independently communicated with a mold cavity are arranged in the feeding box, the feeding chamber is communicated with the feeding port, a placement seat capable of moving up and down is arranged in the vibration chamber, a hammer body is arranged on the lower side of the placement seat, and the hammer body and the placement seat are connected through a plurality of vertical springs. A vibration motor is installed in the hammer body, and a lifting mechanism used for adjusting the vertical position of the placement base is installed on the feeding box. In the feeding process of the feeding mechanism, pressure can be applied to powder in the mold cavity through the hammer body in a vibration mode, filling gaps are prevented from being generated in the mold cavity, especially in the middle-lower portion of the mold cavity, the powder is distributed in the mold cavity more compactly and evenly, and therefore the forming quality of a green body is improved. The feeding mechanism can be obtained by improving existing like products, is adaptive to existing dry powder press equipment, and is easy to implement and popularize.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry powder forming equipment technical field especially relates to a kind of feeding mechanism of dry powder press. BACKGROUND

[0002] Dry powder press is widely used in powder metallurgy, ceramics, building materials and other fields, by the dry powder filled in mould cavity (die cavity) is pressed into shape, preparation meets the requirements of green body.The feeding mechanism as the important component of dry powder press, its function is to fill in die cavity with powder evenly, densely, and feeding quality is directly related to the forming density of green body, uniformity and the performance of final product.At present, the feeding mechanism of common dry powder press is mostly using feeding box or scraper type structure, and filling powder is completed by relying on the weight of powder or mechanical pushing and scraping.This feeding mode simply relies on gravity to drop material, and bridge phenomenon is easy to appear, so that the uniformity and density of powder distribution in die cavity are poor, which affects the forming quality of green body.

[0003] Therefore, how to provide a feeding mechanism capable of effectively avoiding bridge, improving powder filling density and uniformity is a technical problem to be solved in the field. SUMMARY

[0004] To overcome the defects of prior art, the utility model provides a kind of feeding mechanism of dry powder press, to optimize feeding mode, improve the uniformity and density of powder distribution in die cavity.

[0005] For the above technical purpose, the utility model adopts the following technical scheme to realize:

[0006] A kind of feeding mechanism of dry powder press, including driving device and feeding box of transmission connection, and feeding box is equipped with feed inlet;The feeding box is equipped with feeding chamber and vibration chamber, and feeding chamber and vibration chamber are both open at lower end and two spaces of partition, can be respectively individually communicated with die cavity, the feeding chamber is communicated with feed inlet, vibration chamber is equipped with the seat of being able to move up and down, and the seat of being able to move up and down is equipped with hammer body on the lower side, and both are connected by several vertical springs, the hammer body is installed with vibration motor, and the feeding box is installed with lifting mechanism for adjusting the up and down position of seat.

[0007] Preferably, the vibration motor uses rotor type vibration motor.

[0008] Preferably, the driving device is linear driving mechanism capable of driving feeding box to move back and forth;Feeding chamber and vibration chamber are distributed along front and back direction.

[0009] Preferably, the feeding box is equipped with cavity, and one vertical partition is fixed in the cavity, and the cavity is divided into feeding chamber and vibration chamber by partition.

[0010] Preferably, the front side of the feeding box is fixed with a pushing top, and the pushing top is made of elastic material.

[0011] Preferably, the lifting mechanism is a linear driving mechanism, which is installed on the top of the feeding box.

[0012] Preferably, the lower end of the hammer body is provided with a detachable hammer head.

[0013] Preferably, the feeding mechanism further comprises two linear guides distributed on the two sides of the feeding box, and the two sides of the feeding box are provided with two outwardly extending supporting arms, each of which is fixed with a sliding member, and the sliding member is in sliding cooperation with the corresponding linear guide.

[0014] Compared with the prior art, the feeding mechanism has the following beneficial technical effects:

[0015] During the feeding process of the feeding mechanism, the hammer body can vibrate to apply pressure to the powder in the mold cavity, so as to avoid the generation of filling gaps in the lower part of the mold cavity, and make the distribution of the powder in the mold cavity more uniform and dense, so as to improve the forming quality of the blank body. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description only relate to some embodiments of the present application, but not limit the present application.

[0017] Figure 1 It is a structural schematic view of the feeding mechanism in the embodiment.

[0018] Figure 2 It is a structural schematic view of the feeding mechanism in another direction in the embodiment.

[0019] Figure 3 It is a structural schematic view of the feeding mechanism after being partially cut open in the embodiment.

[0020] Figure 4 It is a state schematic view of the feeding mechanism when the feeding chamber is located above the mold cavity in the embodiment.

[0021] Figure 5 It is a state schematic view of the feeding mechanism when the vibration chamber is located above the mold cavity in the embodiment.

[0022] Reference signs:

[0023] 1-loading box; 2-sliding part; 3-branch; 4-linear guide; 5-driving device; 6-feeding port; 7-lifting mechanism; 8-push top; 9-throwing chamber; 10-baffle; 11-arrangement seat; 12-spring; 13-hammer body; 14-hammer head; 15-vibration chamber; 16-mold cavity. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0025] Referring to Figures 1 to 5 The embodiment discloses a feeding mechanism of a dry powder press, which comprises a driving device 5 and a loading box 1 connected in transmission. In use, the loading box 1 can be moved on the upper side of the working platform of the dry powder press to adjust the communication state with the mold cavity 16 driven by the driving device 5. The loading box 1 is in a shell structure, and the upper side is provided with a feeding port 6 connected with the storage unit of the dry powder press through a bendable pipeline to throw powder into the loading box 1. The loading box 1 is provided with a throwing chamber 9 and a vibration chamber 15, both of which are open at the lower end and are two spaces separated by a partition, and can be respectively and independently communicated with the mold cavity 16. The throwing chamber 9 is communicated with the feeding port 6. The vibration chamber 15 is provided with an arrangement seat 11 capable of moving up and down, and the lower side of the arrangement seat 11 is provided with a hammer body 13. The arrangement seat 11 and the hammer body 13 are connected through a plurality of vertically arranged springs 12. The lower end of the hammer body 13 is in a suspended state at the initial position, and the hammer body 13 is provided with a vibration motor (not shown). The loading box 1 is provided with a lifting mechanism 7, and the lifting mechanism 7 is in transmission connection with the arrangement seat 11, so as to adjust the up and down position of the arrangement seat 11.

[0026] The working principle of the feeding mechanism in the present application is as follows:

[0027] As Figure 4 , Figure 5As shown, when feeding, the feeding box 1 is adjusted in position by the driving device 5. Firstly, the feeding chamber 9 is moved above the mold cavity 16, and the powder in the feeding chamber 9 flows into the mold cavity 16 by gravity, in the process, the driving device 5 can move reciprocatingly by a small amplitude to make the powder flow into the mold cavity 16 from different directions, so as to improve the filling uniformity; then, the vibration chamber 15 is moved above the mold cavity 16, the lifting mechanism 7 drives the mounting seat 11 to move downward, the hammer body 13 applies appropriate pressure on the powder in the mold cavity 16, the vibration motor is started, and the hammer body 13 vibrates and presses the powder in the mold cavity 16, so as to avoid the generation of filling gaps in the lower part of the mold cavity 16, and make the powder in the mold cavity 16 more dense and uniform; finally, the feeding chamber 9 is moved above the mold cavity 16 again to supplement the powder in the mold cavity 16, and the feeding chamber 9 is moved away from above the mold cavity 16 to scrape the powder on the upper end of the mold cavity 16, thus completing the whole feeding operation.

[0028] In the feeding mechanism in the utility model, the hammer body 13 and the mounting seat 11 are connected through the spring 12. Based on the design, on the one hand, the spring 12 has good damping effect, weakens the vibration effect on the mounting seat 11 and its connecting components, avoids affecting the working performance of the feeding box 1 due to additional component vibration, and avoids energy waste; on the other hand, the spring 12 can continuously apply pressure on the powder during the vibration of the hammer body 13, and good compaction effect can be achieved.

[0029] In the feeding mechanism in the utility model, since the hammer body 13 is installed in the vibration chamber 15, when the powder is vibrated and compacted, the vibration chamber 15 covers the upper part of the mold cavity 16, so that dust pollution and raw material waste can be avoided during vibration.

[0030] In the utility model, the feeding mechanism can vibrate and compact the powder, so that the compactness of the powder filled in the mold cavity 16 can be significantly improved. In actual production process, the technical features should be fully considered, and the depth of the mold cavity 16 should be reasonably adjusted to ensure that the blank body can be stably formed and the density meets the expected requirements.

[0031] The vibration motor related to the feeding mechanism in the utility model is a product in the prior art, which is widely used in industrial and consumer electronics fields, and is usually divided into a rotor type vibration motor using eccentric mass rotation to realize vibration, and a piezoelectric type vibration motor using piezoelectric effect to generate vibration; in the specific implementation scheme, the vibration motor preferably adopts the rotor type vibration motor.

[0032] As shown in the drawings, Figure 1 , Figure 4As shown, in a specific implementation, the driving device 5 is a linear driving mechanism such as a hydraulic cylinder, a pneumatic cylinder, and an electric push rod, which can drive the feeding box 1 to move back and forth; the feeding chamber 9 and the vibration chamber 15 are distributed in the front-back direction; thus, by driving the feeding box 1 to move back and forth, the driving device 5 can adjust the cooperation state between the feeding chamber 9 and the vibration chamber 15 and the mold cavity 16.

[0033] like Figure 3 , Figure 4 As shown, in a specific implementation, the feeding box 1 has a cavity inside, and a vertical partition 10 is fixed inside the cavity. The cavity is divided into a feeding chamber 9 and a vibration chamber 15 by the partition 10.

[0034] like Figure 1 As shown, in a specific implementation, a pusher 8 is fixed to the front side of the feeding box 1. The pusher 8 is made of an elastic material. Thus, during the process of the feeding box 1 moving towards the mold cavity 16, the pusher 8 can be used to push the already formed blank forward to avoid physical damage to the blank.

[0035] In a specific implementation, the lifting mechanism 7 is a linear drive mechanism such as a cylinder or an electric push rod, which is installed on the top of the loading box 1 to facilitate maintenance.

[0036] like Figure 3 As shown, in a specific implementation, the lower end of the hammer body 13 is provided with a detachable and replaceable hammer head 14, so that a hammer head 14 with a matching shape can be replaced according to the shape of the mold cavity 16.

[0037] Reference Figure 1 , Figure 2 As shown in the specific implementation, the feeding mechanism further includes two linear guide members 4 distributed on both sides of the feeding box 1, the linear guide members 4 extending along the travel direction of the feeding box 1; two outwardly extending support arms 3 are provided on both sides of the feeding box 1, each support arm 3 having a fixed sliding member 2, the sliding member 2 slidingly engaging with the corresponding linear guide member 4; in actual use, the linear guide member 4 is installed on the body of the dry powder press, the linear guide member 4 and the sliding member 2 working together provide support and guidance for the feeding box 1, improving the working stability of the feeding box 1. The linear guide member 4 can be a slide rail or a slide rod, and the sliding member 2 can be a slider or a sliding sleeve accordingly.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0039] Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of the utility model protection.

Claims

1. A feeding mechanism of a dry powder press, comprising a driving device and a feeding box connected by transmission, the feeding box is provided with a feeding port; characterized in that: The feeding box is internally provided with a feeding chamber and a vibrating chamber, both of which are two spaces opened at lower ends and separated, and can be respectively and individually communicated with the mold cavity, the feeding chamber is communicated with the feeding port, the vibrating chamber is internally provided with a placing seat capable of moving up and down, the placing seat is provided with a hammer body at the lower side and both are connected through a plurality of vertically arranged springs, the hammer body is internally provided with a vibrating motor, and the feeding box is provided with a lifting mechanism for adjusting the up and down position of the placing seat.

2. The feeding mechanism according to claim 1, wherein: The vibrating motor is a rotor type vibrating motor.

3. The feeding mechanism according to claim 1, wherein: The driving device is a linear driving mechanism capable of driving the feeding box to move forward and backward; and the feeding chamber and the vibrating chamber are distributed along the front and back directions.

4. The feeding mechanism according to claim 1, wherein: The feeding box is internally provided with a cavity, the cavity is fixedly provided with a vertically arranged partition plate, and the cavity is divided into the feeding chamber and the vibrating chamber by the partition plate.

5. The feeding mechanism of claim 1, wherein: The front side of the feeding box is fixedly provided with a push top, and the push top is made of elastic material.

6. The loading mechanism of claim 1, wherein: The lifting mechanism is a linear driving mechanism and is installed at the top of the feeding box.

7. The loading mechanism of claim 1, wherein: The lower end of the hammer body is provided with a hammer head capable of being disassembled and replaced.

8. The loading mechanism of claim 1, wherein: The feeding mechanism further comprises two linear guide members distributed on both sides of the feeding box, both sides of the feeding box are provided with two outwardly extending supporting arms, each supporting arm is fixedly provided with a sliding member, and the sliding member is slidably matched with the corresponding linear guide member.

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