A material extrusion molding test device

Abstract

The present invention relates to a material extrusion molding test device, comprising a shell, an extrusion component and a cutting component, wherein a screening plate is fixedly arranged inside the shell, and the screening plate divides the inside of the shell into a feed cavity and a discharge cavity, and a plurality of screening holes with different apertures and hole depths are provided on the screening plate, and the output end face of the screening plate intersects with the radial section of the screening plate to form an inclined surface; the extrusion component has an extrusion end, and the extrusion end is built into the feed cavity, and the size of the feed cavity is changed by sliding the extrusion end; the cutting component has a cutting end, and the cutting end is arranged in the discharge cavity and is arranged in contact with a plurality of inclined surfaces; the problem that when conducting a material extrusion molding test, the existing device is difficult to simultaneously produce a plurality of granular materials with different lengths and diameters, and the influence of the above two factors on the molding of the granular materials cannot be studied.

Description

Technical Field

[0001] The invention relates to the technical field of granulation molding test, in particular to a material extrusion molding test device. Background Art

[0002] Granulation of powder materials has been widely used in the fields of medicine, fertilizer, food, etc. In terms of new fertilizers, the research on granulation and molding of powder materials has a better market prospect. The traditional fertilization method is to apply the prepared fertilizer directly into the field, which is easy to cause uneven fertilization. The fertilizer will be washed away in rainy weather, which is easy to cause dust pollution. It is also difficult to store and transport, and it is difficult to form a systematic and industrial development.

[0003] Before a product can be mass-produced, it must undergo a large number of scientific demonstration tests. Only after the tests are successfully passed can it be truly put into production. Specifically, the optimal values ​​of the length and size of the material particles are required, so it is necessary to test the extruded particles of the material.

[0004] For example, the patent application number CN204746266U proposes an experimental disc granulator, which can select granulation discs of different diameters for granulation through four coaxially arranged granulation discs. However, the above granulator does not take into account the influence of the particle length of the material on the material.

[0005] Therefore, when conducting extrusion molding tests on materials, it is difficult for existing devices to simultaneously produce multiple granular materials with different lengths and diameters, and it is impossible to study the effects of the above two factors on the molding of granular materials. Summary of the invention

[0006] In view of this, it is necessary to provide a material extrusion molding test device to solve the problem that when conducting material extrusion molding tests, the existing devices are difficult to simultaneously produce multiple granular materials with different lengths and diameters, and cannot study the effects of the above two factors on the molding of granular materials.

[0007] The present invention provides a material extrusion molding test device, comprising a shell, an extrusion component and a cutting component. A screening plate is fixedly arranged inside the shell, and the screening plate divides the inside of the shell into a feed cavity and a discharge cavity. The screening plate is provided with a plurality of screening holes with different apertures and hole depths, and the output end face of the screening plate intersects with the radial section of the screening plate to form an inclined surface; the extrusion component has an extrusion end, which is built into the feed cavity, and the size of the feed cavity is changed by sliding the extrusion end, so that the material can be squeezed from the feed cavity into the discharge cavity via the inclined surface; the cutting component has a cutting end, which is arranged in the discharge cavity and is attached to a plurality of inclined surfaces, so as to cut the material passing through the screening holes.

[0008] Furthermore, the outer shell includes a sleeve and a base plate, the sleeve is detachably connected to the base plate, a cavity is formed between the sleeve and the base plate, the screening plate is built into the cavity and divides the cavity into the feed cavity and the discharge cavity, the extrusion end is slidably connected to the sleeve, and the cutting assembly is fixedly connected to the base plate.

[0009] Furthermore, the sleeve and the base plate are threadedly connected.

[0010] Furthermore, the plurality of sieve holes are evenly arranged along the circumference of the sieve plate, and the number of the sieve holes is six, which are respectively the first sieve hole, the second sieve hole, the third sieve hole, the fourth sieve hole, the fifth sieve hole and the sixth sieve hole, and the hole diameters and hole depths of the first sieve hole, the second sieve hole, the third sieve hole, the fourth sieve hole, the fifth sieve hole and the sixth sieve hole are the same.

[0011] Furthermore, the cutting assembly includes a cutting piece, which includes a rotating shaft and a cutting knife. The rotating shaft is rotatably connected to the outer shell, and the rotating shaft is connected to the cutting knife. The movement path of the cutting knife forms a cutting surface, and the cutting surface is arranged to be attached to the output end face of the screen plate.

[0012] Furthermore, there are two cutting knives, which are symmetrically arranged on both sides of the rotating shaft, and the cutting surfaces of the two cutting knives overlap. The cutting assembly also includes a driving member, and the output end of the driving member is connected to the rotating shaft to drive the rotating shaft to rotate.

[0013] Furthermore, the two cutting knives have a first state and a second state. When the two cutting knives are in the first state, the rotating shaft is in a non-rotating state, and the two cutting knives are staggered with the screening holes. When the cutting knives are in the second state, the rotating shaft is in a rotating state.

[0014] Furthermore, the device also includes a heating component, which includes a spiral heating wire. The spiral heating wire is arranged on the outer wall of the outer shell located on the feed cavity to heat the feed cavity.

[0015] Furthermore, the heating component also includes a metal probe and a temperature control box. The temperature control box is connected to the spiral heating wire via the metal probe. The temperature control box is electrically connected to the spiral heating wire to control the heating power of the spiral heating wire.

[0016] Furthermore, the device also includes a receiving component, which is built into the discharge cavity. The receiving component is located on the side of the cutting end away from the screening plate. The receiving component has a plurality of receiving cavities, and the plurality of receiving cavities correspond one-to-one to the plurality of screening holes for receiving materials discharged from the corresponding screening holes.

[0017] Compared with the prior art, a sieve plate is fixedly arranged inside the shell, and the sieve plate divides the interior of the shell into a feed cavity and a discharge cavity. A plurality of sieve holes with different apertures and hole depths are opened on the sieve plate, and the output end face of the sieve plate intersects with the radial section of the sieve plate to form an inclined surface, and under the action of the extrusion assembly and the cutting assembly, a plurality of materials with different diameters and lengths can be obtained at one time, and the most preferred granular material size can be obtained by detecting the molding characteristics of the granular material, such as strength, hygroscopicity, physicochemical properties, physical properties, etc., and relative to the existing material extrusion molding test device, the length and diameter of the extruded granular material can be controlled at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a material extrusion molding test device in this embodiment provided by the present invention;

[0019] Figure 2 A schematic diagram of the structure of a heating component in this embodiment of a material extrusion molding test device provided by the present invention;

[0020] Figure 3 A schematic structural diagram of a cutting assembly in this embodiment of a material extrusion molding test device provided by the present invention;

[0021] Figure 4 This is a schematic structural diagram of a screening plate in this embodiment of a material extrusion molding test device provided by the present invention. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0023] like Figure 1 As shown, a material extrusion molding test device in this embodiment includes a shell 100, an extrusion component 200 and a cutting component 300, wherein the material is placed in the shell 100, the material is extruded and molded by the extrusion component 200, and is cut by the cutting component 300 to obtain the material of the desired shape, which is explained and described in more detail below.

[0024] The housing 100 in this embodiment is a structure for providing a cavity required for extrusion molding.

[0025] like Figure 4 As shown, a screen plate 130 is fixedly provided inside the outer shell 100 in this embodiment, and the screen plate 130 divides the interior of the outer shell 100 into a feed cavity and a discharge cavity. The screen plate 130 is provided with a plurality of screen holes 131 with different apertures and hole depths, and the output end face of the screen plate 131 intersects with the radial section of the screen plate 131 to form an inclined slope.

[0026] Among them, the outer shell 100 includes a sleeve 110 and a base plate 120, the sleeve 110 and the base plate 120 are detachably connected, a cavity is formed between the sleeve 110 and the base plate 120, the screening plate 130 is built into the cavity, and the cavity is divided into a feed cavity and a discharge cavity, the extrusion end is slidably connected to the sleeve 110, and the cutting assembly 300 is fixedly connected to the base plate 120.

[0027] In order to facilitate the removal of the extruded material, the sleeve 110 and the base plate 120 in this embodiment are detachably connected, wherein the sleeve 110 and the base plate 120 are threadedly connected. It can be understood that the sleeve 110 and the base plate 120 can also be replaced by other forms of connection structures as long as the extruded material can be easily removed.

[0028] The multiple sieve holes 131 in this embodiment are evenly arranged along the circumference of the sieve plate 130. The number of sieve holes 131 is six, which are respectively the first sieve hole, the second sieve hole, the third sieve hole, the fourth sieve hole, the fifth sieve hole and the sixth sieve hole. The first sieve hole, the second sieve hole, the third sieve hole, the fourth sieve hole, the fifth sieve hole and the sixth sieve hole have the same hole diameter and hole depth, so that materials of different diameters and lengths can be obtained.

[0029] The extrusion assembly 200 in this embodiment is a structure for extruding the material placed in the housing 100.

[0030] The extrusion assembly 200 in this embodiment has an extrusion end, which is built into the feed cavity. The size of the feed cavity is changed by sliding the extrusion end so as to squeeze the material from the feed cavity into the discharge cavity.

[0031] It can be understood that the extrusion assembly 200 is a structure of an extrusion end used for extrusion molding that can be thought of by a person skilled in the art. The extrusion assembly 200 in this embodiment includes a piston plate and a pressure rod. The piston plate is located in the feed cavity. The piston plate slides in a direction close to or away from the screening plate 130. The outer wall of the piston plate slides and is sealed with the interior of the outer shell 100. The side of the piston plate away from the screening plate 130 is connected to the press via a pressure rod to drive the piston plate to move.

[0032] The cutting assembly 300 in this embodiment is a structure for cutting the material passing through the screening holes 131 .

[0033] The cutting assembly 300 in this embodiment has a cutting end, which is disposed in the discharge cavity and attached to the plurality of sieve holes 131 for cutting materials passing through the sieve holes 131 .

[0034] Among them, Figure 3 As shown, the cutting assembly 300 includes a cutting piece 310, and the cutting piece 310 includes a rotating shaft 311 and a cutting knife 312. The rotating shaft 311 is rotatably connected to the housing 100, and the rotating shaft 311 is connected to the cutting knife 312. The movement path of the cutting knife 312 forms a cutting surface, and the cutting surface is arranged to be attached to the output end surface of the screening plate 130.

[0035] Furthermore, the cutting knife 312 is a metal wire knife.

[0036] In order to make the cutting process smoother and facilitate the rotation of the rotating shaft 311, the number of cutting knives 312 in this embodiment is two, and the two cutting knives 312 are symmetrically arranged on both sides of the rotating shaft 311. The cutting surfaces of the two cutting knives 312 overlap, and the cutting assembly 300 also includes a driving member 320, and the output end of the driving member 320 is connected to the rotating shaft 311 to drive the rotating shaft 311 to rotate.

[0037] The driving component 320 is a motor.

[0038] In order to prevent interference between the cutting knives 312 and the material squeezed out from the screening hole 131, the two cutting knives 312 in this embodiment have a first state and a second state. When the two cutting knives 312 are in the first state, the rotating shaft 311 is in a non-rotating state. The two cutting knives 312 are staggered with the screening hole 131. When the cutting knives 312 are in the second state, the rotating shaft 311 is in a rotating state.

[0039] It can be understood that, each time cutting is performed, the two cutting knives 312 rotate 180 degrees, and when the rotation stops, the cutting knives 312 and the screening holes 131 are staggered.

[0040] When the material needs to be heated during the extrusion process, the device in this embodiment also includes a heating component 400, and the heating component 400 includes a spiral heating wire 420. The spiral heating wire 420 is arranged on the outer wall of the housing 100 located on the feed cavity to heat the feed cavity.

[0041] Since friction generates frictional heat, in order to control the temperature in the feed cavity to remain stable, such as Figure 2As shown, the heating component 400 in this embodiment also includes a metal probe 410 and a temperature control box 430. The temperature control box 430 is connected to the spiral heating wire 420 via the metal probe 410. The temperature control box 430 is electrically connected to the spiral heating wire 420 to control the heating power of the spiral heating wire 420.

[0042] Among them, the temperature control box 430 can accurately observe the temperature change in real time. When the temperature reaches the set target value, it keeps warm. When the temperature is lower than the set temperature, it automatically heats up until it reaches the set temperature, and then keeps warm again.

[0043] It is understandable that the metal probe 410 and the temperature control box 430 may also be replaced by other structures as long as the temperature inside the feed cavity can be stabilized.

[0044] In order to prevent the spiral heating wire 420 from being exposed outside the device and affecting the operation, in this embodiment, a heat insulation layer is coated on the outside of the shell 100, and an installation cavity is formed between the heat insulation layer and the shell 100, and the spiral heating wire 420 is embedded in the installation cavity.

[0045] In order to facilitate receiving the cut materials, the device in this embodiment also includes a receiving component 500, which is built into the discharge cavity. The receiving component 500 is located on the side of the cutting end away from the screening plate 130. The receiving component 500 has a plurality of receiving cavities 510, and the plurality of receiving cavities 510 correspond one by one to the plurality of screening holes 131 for receiving the materials discharged from the corresponding screening holes 131.

[0046] It can be understood that the aperture of the receiving cavity 510 is larger than the maximum aperture of the screening hole 131 .

[0047] Workflow: put the prepared powder material into the feed cavity, adjust the extrusion end of the extrusion assembly 200 to the appropriate position, start the press, and make the powder material squeezed into strips through the sieve holes 131 of the sieve plate 130 under the extrusion of the extrusion end, and drive the cutting knife 312 to rotate through the driving member 320 to cut the strip material into specified particles, and finally fall into the receiving cavity 510 under the action of gravity and be collected, so that multiple particle materials with different diameters and lengths can be obtained at one time, and the most preferred particle material size can be obtained by detecting the molding characteristics of the particle material, such as strength, hygroscopicity, physicochemical properties, physical properties, etc.

[0048] Compared with the prior art: a sieve plate 130 is fixedly arranged inside the outer shell 100, and the sieve plate 130 divides the interior of the outer shell 100 into a feed cavity and a discharge cavity. A plurality of sieve holes 131 with different apertures and hole depths are opened on the sieve plate 130, and the output end face of the sieve plate intersects with the radial section of the sieve plate to form an inclined slope, and under the action of the extrusion component 200 and the cutting component 300, multiple materials with different diameters and lengths can be obtained at one time, and the most preferred granular material size can be obtained by detecting the molding characteristics of the granular material, such as strength, hygroscopicity, physicochemical properties, physical properties, etc., and compared with the existing material extrusion molding test device, multiple variables can be controlled simultaneously.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A material extrusion molding test device, characterized in that: It includes a housing, an extrusion assembly and a cutting assembly; A sieve plate is fixedly arranged inside the shell, and the sieve plate divides the inside of the shell into a feed cavity and a discharge cavity. The sieve plate is provided with a plurality of sieve holes with different hole diameters and hole depths, and the output end surface of the sieve plate intersects with the radial section of the sieve plate to form an inclined slope; The extrusion assembly has an extrusion end, which is built into the feed cavity. The size of the feed cavity is changed by sliding the extrusion end, so that the material is squeezed from the feed cavity into the discharge cavity through the inclined surface. The cutting assembly has a cutting end, which is arranged in the discharge cavity and attached to a plurality of inclined surfaces to cut the material passing through the screening hole; The housing comprises a sleeve and a bottom plate, the sleeve is detachably connected to the bottom plate, a cavity is formed between the sleeve and the bottom plate, the screening plate is built into the cavity and divides the cavity into the feed cavity and the discharge cavity, the extrusion end is slidably connected to the sleeve, and the cutting assembly is fixedly connected to the bottom plate; The plurality of sieve holes are evenly arranged along the circumference of the sieve plate, the number of the sieve holes is six, and they are respectively the first sieve hole, the second sieve hole, the third sieve hole, the fourth sieve hole, the fifth sieve hole and the sixth sieve hole, and the apertures and depths of the first sieve hole, the second sieve hole, the third sieve hole, the fourth sieve hole, the fifth sieve hole and the sixth sieve hole are the same; The cutting assembly comprises a cutting member, the cutting member comprises a rotating shaft and a cutting knife, the rotating shaft is rotatably connected to the housing, the rotating shaft is connected to the cutting knife, the movement path of the cutting knife forms a cutting surface, and the cutting surface is arranged to be attached to the output end surface of the sieve plate; The device also includes a receiving component, which is built into the discharge cavity. The receiving component is located on the side of the cutting end away from the screening plate. The receiving component has a plurality of receiving cavities, and the plurality of receiving cavities correspond one-to-one to the plurality of screening holes for receiving materials discharged from the corresponding screening holes.

2. The material extrusion molding test device according to claim 1, characterized in that: The sleeve and the base plate are threadedly connected.

3. The material extrusion molding test device according to claim 1, characterized in that: There are two cutting knives, which are symmetrically arranged on both sides of the rotating shaft. The cutting surfaces of the two cutting knives overlap. The cutting assembly also includes a driving member, and the output end of the driving member is connected to the rotating shaft to drive the rotating shaft to rotate.

4. The material extrusion molding test device according to claim 3, characterized in that: The two cutting knives have a first state and a second state. When the two cutting knives are in the first state, the rotating shaft is in a non-rotating state, and the two cutting knives are staggered with the screening holes. When the two cutting knives are in the second state, the rotating shaft is in a rotating state.

5. The material extrusion molding test device according to claim 1, characterized in that: The device also includes a heating component, which includes a spiral heating wire. The spiral heating wire is arranged on the outer wall of the shell located on the feeding cavity to heat the feeding cavity.

6. The material extrusion molding test device according to claim 5, characterized in that: The heating component also includes a metal probe and a temperature control box. The temperature control box is connected to the spiral heating wire via the metal probe. The temperature control box is electrically connected to the spiral heating wire to control the heating power of the spiral heating wire.

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