Feeding device for PS sheet extruder

Abstract

The utility model relates to a feeding device for a PS (polystyrene) sheet extruder, which comprises a hopper provided with a feed port and a discharge port; the rotating shaft is rotationally arranged in the hopper; the driving part is arranged on the hopper and connected with the rotating shaft so as to drive the rotating shaft to rotate; the screen is arranged in the hopper, and the screen is arranged on the rotating shaft in a sleeving manner and is in sliding connection with the rotating shaft; the transmission assembly comprises a fixing ring, a spring, a plurality of rollers and a plurality of convex blocks; according to the raw material particle screening device, raw material particles can be screened through the screen, large refractory foreign matter is screened out, meanwhile, the screen can continuously shake up and down in the rotating process through the transmission assembly, the residual raw material particles in meshes of the screen are shaken off, the screen is prevented from being blocked, and the screening efficiency of the raw material particles is guaranteed; therefore, the situation that foreign matters enter the machine barrel and the die head to cause unsmooth discharging and even blockage of the die head is avoided, workers do not need to frequently overhaul the extruder, the production efficiency of the extruder can be guaranteed, and the practicability is high.

Description

Technical Field

[0001] The present application relates to the technical field of PS sheet production, and in particular to a feeding device for a PS sheet extruder. Background Art

[0002] At present, in the production process of PS sheets, extrusion and tableting are mainly carried out through an extruder. The existing extruder mainly includes a barrel, a feed hopper, a screw, and a die head. The feed hopper is arranged at the top of the barrel, the screw is rotatably arranged in the barrel, the screw is connected to the motor, and the die head is arranged at the end of the barrel. After the raw material particles enter the barrel through the feed hopper, the raw material is melted into a melt under the action of a heating device, and the melt is transported to the die head under the action of the screw, and a soft and hot PS sheet is extruded from the outlet of the die head.

[0003] However, in the actual production process, since the raw material particles are directly put into the feed hopper, some large foreign objects that are difficult to melt mixed in the raw material particles will enter the barrel, and then enter the die head along with the raw materials. This will easily lead to poor discharge or blockage of the extruder die head, requiring staff to shut down the extruder for maintenance, which will reduce the production efficiency of PS sheets and is very inconvenient.

[0004] In view of the above problems, a feeding device for a PS sheet extruder is now designed. Utility Model Content

[0005] The embodiment of the present application provides a feeding device for a PS sheet extruder to solve the problem in the related art that raw material particles are directly put into a feed hopper, and some large foreign objects that are difficult to melt mixed in the raw material particles will enter the barrel and the die head, which may easily lead to poor discharge or blockage of the extruder die head, requiring staff to shut down the extruder for maintenance, which will reduce the production efficiency of PS sheets.

[0006] In a first aspect, a feeding device for a PS sheet extruder is provided, comprising:

[0007] A hopper, wherein the hopper is provided with a feed inlet and a discharge outlet;

[0008] A rotating shaft, which is rotatably disposed in the hopper;

[0009] A driving member, which is disposed on the hopper and connected to the rotating shaft to drive the rotating shaft to rotate;

[0010] A screen is arranged in the hopper, wherein the screen sleeve is arranged on the rotating shaft and is slidably connected thereto;

[0011] The transmission assembly includes a fixed ring, a spring, a plurality of rollers and a plurality of protrusions. The fixed ring is arranged in the hopper, the plurality of rollers are arranged on the screen, the rollers are matched with the fixed ring, the plurality of protrusions are arranged on the fixed ring, a slope is provided on the side of the protrusion close to the roller, the spring sleeve is arranged on the rotating shaft, and the two ends of the spring are respectively connected to the rotating shaft and the screen.

[0012] In some embodiments, a plurality of guide blocks are provided on the rotating shaft;

[0013] The screen comprises a sleeve and a screen body, wherein the sleeve is sleeved on a rotating shaft, an inner wall of the sleeve is provided with guide grooves corresponding to a plurality of guide blocks, the guide grooves cooperate with the guide blocks, and the screen body is arranged on the sleeve.

[0014] In some embodiments, a baffle is provided on the edge of the screen body.

[0015] In some embodiments, the screen body is in a frustoconical shape.

[0016] In some embodiments, a plurality of scraper assemblies are further provided in the hopper, and the scraper assemblies include a scraper body and a connecting frame. The scraper body is provided in the hopper and fits against the inner wall of the hopper, and the connecting frame is provided on the rotating shaft and connected to the scraper body.

[0017] In some embodiments, a connecting pipe is provided at the lower end of the hopper, the connecting pipe is communicated with a discharge port, an auger blade is provided in the connecting pipe, and the auger blade is provided on a rotating shaft.

[0018] The embodiment of the present application provides a feeding device for a PS sheet extruder, which can drive the screen on the rotating shaft to rotate through a driving member, thereby screening the raw material particles through the screen and screening out large pieces of refractory foreign matter. At the same time, the screen can be continuously shaken up and down during the rotation process through a transmission component, so that the raw material particles remaining in the mesh of the screen can be shaken off to avoid clogging of the screen, thereby ensuring the screening efficiency of the raw material particles. In this way, foreign matter can be prevented from entering the barrel and the die head, causing poor discharge of the die head or even clogging, so that the staff does not need to frequently inspect and repair the extruder, which can ensure the production efficiency of the extruder and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of a cross-sectional structure provided in an embodiment of the present application;

[0023] Figure 4 Provided for the embodiments of this application Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 5 A schematic diagram of a local three-dimensional explosion structure provided in an embodiment of the present application.

[0025] In the figure: 1. hopper; 11. feed port; 12. discharge port; 2. rotating shaft; 21. guide block; 3. driving member; 4. screen; 41. sleeve; 42. screen body; 43. guide groove; 44. baffle; 5. transmission assembly; 51. fixing ring; 52. spring; 53. roller; 54. bump; 55. inclined surface; 6. scraper assembly; 61. scraper body; 62. connecting frame; 7. connecting pipe; 8. auger blade. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] The embodiment of the present application provides a feeding device for a PS sheet extruder, which can solve the problem in the related art that raw material particles are directly put into the feed hopper, and some large foreign objects that are difficult to melt mixed in the raw material particles will enter the barrel and the die head, which may easily lead to poor discharge or blockage of the extruder die head, requiring staff to shut down the extruder for maintenance, which will reduce the production efficiency of PS sheets.

[0028] See also Figure 1-Figure 5A feeding device for a PS sheet extruder comprises: a hopper 1, a rotating shaft 2, a driving member 3, a screen 4 and a transmission assembly 5, wherein the hopper 1 is provided with a feed port 11 and a discharge port 12, wherein the feed port 11 is arranged at the upper end of the hopper 1, and the discharge port 12 is arranged at the lower end of the hopper 1, the rotating shaft 2 is rotatably arranged in the hopper 1, the driving member 3 is arranged on the hopper 1 and connected to the rotating shaft 2 to drive the rotating shaft 2 to rotate, the screen 4 is arranged in the hopper 1, and the screen 4 is sleeved on the rotating shaft 2 and slidably connected thereto;

[0029] In this embodiment, the driving member 3 is preferably a motor, so that during the implementation process, the motor can drive the rotating shaft 2 to rotate, thereby driving the screen 4 to rotate through the rotating shaft 2, and then the staff can put the raw material particles into the hopper 1 through the feed port 11, and then the raw material particles will fall on the screen 4 by gravity, so that large pieces of refractory foreign matter can be screened out through the screen 4, so that the raw material particles pass through the screen 4 and fall into the barrel of the extruder, thereby preventing large pieces of refractory foreign matter from entering the barrel and the die head, causing the die head to discharge material unsmoothly or even blocked, so that the staff does not need to frequently inspect and repair the extruder, and the production efficiency of the extruder can be guaranteed. When in use, the staff only needs to clean up the foreign matter screened out on the screen 4 when regularly maintaining the extruder, which is highly practical.

[0030] At the same time, the continuously rotating screen 4 can prevent the raw material particles from accumulating in one place of the screen 4, so that the screen surface of the screen 4 can be used more evenly and fully, thereby ensuring the screening efficiency of the raw material particles;

[0031] The transmission assembly 5 includes a fixed ring 51, a spring 52, a plurality of rollers 53 and a plurality of protrusions 54. The fixed ring 51 is arranged in the hopper 1. The plurality of rollers 53 are arranged on the screen 4. The rollers 53 are matched with the fixed ring 51. The plurality of protrusions 54 are arranged on the fixed ring 51. A side of the protrusion 54 close to the roller 53 is provided with an inclined surface 55. The spring 52 is sleeved on the rotating shaft 2. The two ends of the spring 52 are respectively connected to the rotating shaft 2 and the screen 4.

[0032] When the screen 4 rotates, the rollers 53 are driven to rotate, so that the rollers 53 roll along the fixing ring 51. At the same time, the elastic force of the spring 52 can make the rollers 53 always close to the fixing ring 51. When the rollers 53 move to the inclined surface 55 on the protrusion 54, the rollers 53 move upward along the inclined surface 55, thereby driving the screen 4 to move upward. When the rollers 53 move to the point where they are not in contact with the protrusion 54, the rollers 53 move downward and contact with the fixing ring 51, thereby driving the screen 4 to move downward. In this way, each time the rollers 53 contact a protrusion 54, the screen 4 moves up and down once. In this way, when the screen 4 continuously drives the rollers 53 to rotate, multiple rollers 53 can be made to contact and cooperate with multiple protrusions 54 in turn, thereby driving the screen 4 to continuously shake up and down during the rotation process, so that the raw material particles remaining in the mesh of the screen 4 can be shaken off, thereby preventing the screen 4 from being blocked, so that the screening efficiency of the raw material particles can be further guaranteed, and the use is convenient.

[0033] See also Figure 5 Specifically, the rotating shaft 2 is provided with a plurality of guide blocks 21, the screen 4 includes a sleeve 41 and a screen body 42, the sleeve 41 is sleeved on the rotating shaft 2, the inner wall of the sleeve 41 is provided with guide grooves 43 corresponding to the plurality of guide blocks 21, the guide grooves 43 cooperate with the guide blocks 21, and the screen body 42 is provided on the sleeve 41;

[0034] In this way, through the cooperation and limiting effect of the guide groove 43 and the guide block 21, the screen body 42 can only make a linear motion in the axial direction of the rotating shaft 2. At the same time, when the rotating shaft 2 rotates, the sleeve 41 can be driven to rotate through the guide block 21, thereby rotating the screen body 42. In this way, the screen 4 can move up and down during the rotation of the rotating shaft 2, which is convenient for use.

[0035] Furthermore, a baffle 44 is provided at the edge of the screen body 42, so that when the raw material particles are added, the baffle 44 can block the falling raw material particles, thereby preventing the raw material particles from scattering everywhere and falling into the gap between the screen body 42 and the hopper 1, which is highly practical.

[0036] Furthermore, in the present embodiment, the screen body 42 is in a truncated cone shape, so that when the raw material particles fall on the screen body 42, the raw material particles will roll downward along the surface of the screen body 42 due to the action of gravity, so that a pile of raw material particles falling on the screen body 42 can be quickly dispersed, thereby accelerating the screening efficiency of the raw material particles. At the same time, large pieces of refractory foreign matter will fall on the edge of the screen body 42, thereby avoiding large pieces of refractory foreign matter from accumulating on the surface of the screen body 42 and affecting the screening effect of the raw material particles. The accumulated large pieces of foreign matter are easier for the staff to clean up, which is convenient for use.

[0037] See also Figure 2-Figure 3 The hopper 1 is also provided with a plurality of scraper assemblies 6, the scraper assemblies 6 comprising a scraper body 61 and a connecting frame 62, the scraper body 61 is provided in the hopper 1 and fits with the inner wall of the hopper 1, the connecting frame 62 is provided on the rotating shaft 2 and connected to the scraper body 61;

[0038] In this way, when the rotating shaft 2 rotates, the scraper body 61 will be driven to rotate through the connecting frame 62, so that the scraper body 61 can scrape off the raw material particles accumulated on the inner wall of the hopper 1, so as to avoid the accumulation of raw materials on the side wall of the hopper 1 affecting the feeding effect, which is highly practical.

[0039] More specifically, in the present embodiment, a connecting pipe 7 is provided at the lower end of the hopper 1, and the connecting pipe 7 is communicated with the discharge port 12. An auger blade 8 is provided in the connecting pipe 7, and the auger blade 8 is provided on the rotating shaft 2. In this way, the connecting pipe 7 can be connected to the barrel during the implementation process, and then when the raw material particles are screened and fed, the rotating shaft 2 will drive the auger blade 8 to rotate, so that the raw material particles in the connecting pipe 7 can be evenly fed into the barrel through the auger blade 8, so that the extruder feed can be more uniform and the raw material can be prevented from being blocked during the feeding process.

[0040] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0041] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0042] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A feeding device for a PS sheet extruder, characterized in that: It includes: A hopper (1), wherein the hopper (1) is provided with a feed inlet (11) and a discharge outlet (12); A rotating shaft (2) rotatably disposed in the hopper (1); A driving member (3) is disposed on the hopper (1) and connected to the rotating shaft (2) to drive the rotating shaft (2) to rotate; A screen (4) is arranged in the hopper (1), and the screen (4) is sleeved on the rotating shaft (2) and slidably connected thereto; A transmission assembly (5) comprises a fixing ring (51), a spring (52), a plurality of rollers (53) and a plurality of protrusions (54); the fixing ring (51) is arranged in the hopper (1); the plurality of rollers (53) are arranged on the screen (4); the rollers (53) are matched with the fixing ring (51); the plurality of protrusions (54) are arranged on the fixing ring (51); a slope (55) is provided on a side of the protrusion (54) close to the roller (53); the spring (52) is sleeved on the rotating shaft (2); and the two ends of the spring (52) are respectively connected to the rotating shaft (2) and the screen (4).

2. A feeding device for a PS sheet extruder as claimed in claim 1, characterized in that: The rotating shaft (2) is provided with a plurality of guide blocks (21); The screen (4) comprises a sleeve (41) and a screen body (42); the sleeve (41) is sleeved on the rotating shaft (2); the inner wall of the sleeve (41) is provided with guide grooves (43) corresponding to a plurality of guide blocks (21); the guide grooves (43) cooperate with the guide blocks (21); and the screen body (42) is arranged on the sleeve (41).

3. A feeding device for a PS sheet extruder as claimed in claim 2, characterized in that: A baffle (44) is provided at the edge of the screen body (42).

4. A feeding device for a PS sheet extruder as claimed in claim 2, characterized in that: The screen body (42) is in a truncated cone shape.

5. A feeding device for a PS sheet extruder as claimed in claim 1, characterized in that: A plurality of scraper assemblies (6) are also provided in the hopper (1). The scraper assemblies (6) include a scraper body (61) and a connecting frame (62). The scraper body (61) is provided in the hopper (1) and fits the inner wall of the hopper (1). The connecting frame (62) is provided on the rotating shaft (2) and connected to the scraper body (61).

6. A feeding device for a PS sheet extruder as claimed in claim 1, characterized in that: A connecting pipe (7) is provided at the lower end of the hopper (1), the connecting pipe (7) is communicated with a discharge port (12), an auger blade (8) is provided in the connecting pipe (7), and the auger blade (8) is arranged on the rotating shaft (2).

Images