Extruder head template adjusting mechanism

Abstract

The invention provides an extruder head template adjusting mechanism. The extruder head template adjusting mechanism comprises an extrusion part and mounting parts positioned on one side or two sides of the extrusion part, a feeding port is formed in one side of the extrusion part, a discharging port communicated with the feeding port is formed in the other side of the extrusion part, a height and width adjusting mechanism is arranged on the inner wall of the discharging port, and the height and width adjusting mechanism comprises a height adjusting assembly and a synchronous assembly located at one end or two ends of the height adjusting assembly; the height adjusting assembly comprises a limiting plate in sliding connection with the upper wall or the lower wall of the discharging port and a first driving piece which is fixed to the extrusion part and drives the limiting plate to slide in the height direction of the discharging port. According to the technical scheme, the height of the discharging opening of the extrusion part is limited through stretching and retracting of the limiting plate, so that the purpose of adjusting the thickness of a formed plate is achieved, the structure is simple and convenient to maintain, the whole template does not need to be replaced, production is more flexible, and time and labor are saved during maintenance.

Description

Technical Field

[0001] The invention generally relates to the field of extruders, and in particular to an extruder die plate adjustment mechanism. Background Art

[0002] Extruder is a common plastic processing equipment, mainly used to process solid plastic raw materials into plastic products with specific shapes. Its working principle is to use the pressure and shear force generated by the rotation of the screw to transport, compress, melt and plasticize the plastic raw materials in the barrel, and finally extrude them through a specific model of template to form continuous profiles, such as pipes, plates, cables, skins, etc.

[0003] When processing sheets, the outlet of the template is the profile size of the final sheet, so that the molten raw material is limited and shaped by the outlet of the template, and then undergoes a temperature-lowering and plasticizing treatment to form a sheet product, which is finally cut and shaped to achieve relative size and quality specifications.

[0004] However, the size of the discharge port of the template before the improvement is fixed. If you want to produce plate products of different specifications, you need to disassemble and replace the template to achieve the size of the discharge port of the corresponding specifications. Therefore, the inventor believes that the existing template has the problem of being unable to adjust the size of the discharge port, and the installation, disassembly and replacement are time-consuming and laborious. Summary of the invention

[0005] According to the present invention, in view of the problems existing in the above-mentioned prior art, an extruder head template adjustment mechanism is provided, comprising: an extrusion part, a mounting part located on one side or both sides of the extrusion part; an extrusion part, one side of which is provided with a feed port, and the other side of which is provided with a discharge port interconnected with the feed port, the inner wall of the discharge port is provided with a height and width adjustment mechanism, the height and width adjustment mechanism includes a height adjustment component, and a synchronization component located at one end or both ends of the height adjustment component; the height adjustment component includes a limit plate slidably connected to the upper wall or lower wall of the discharge port, and a first driving member fixed to the extrusion part and driving the limit plate to slide toward the height direction of the discharge port. By extending and retracting the limit plate, the height of the discharge port of the extrusion part is limited to achieve the purpose of adjusting the thickness of the sheet after forming. This structure is not only simple in structure and easy to maintain, but also does not require the replacement of the overall template, making production more flexible and maintenance saving time and effort.

[0006] In some embodiments, the synchronization component includes a limit module, which abuts against one side of the limit plate and is interconnected with the inner wall of the discharge port; a second driving member is fixed to the outer wall of the extrusion portion and is interconnected with the limit module, and is used to drive the limit module to slide and connect to the inner wall on the other side of the discharge port. As a result, the limit module can be displaced synchronously with the limit plate, which can not only adjust the final length of the product, but also make the end of the limit module abut against the other side of the discharge port through the sliding of the limit module, so as to achieve the purpose of limiting the width of the final product.

[0007] In some embodiments, a heating rod is provided at the end of the limit plate along its length direction. Therefore, since the template is located at the end of the extruder, in order to reduce the sheet material not being formed due to the decrease in the fluidity of the raw material extrusion caused by the decrease in the temperature of the raw material, the limit plate can also ensure the smoothness of the raw material flow through the heat conduction of the heating rod while the limit plate is displaced.

[0008] In some embodiments, a first flow guiding slope is provided on the side of the bottom edge of the limiting plate in contact with the raw material toward the feed port of the extrusion part. Therefore, due to the slippage of the limiting plate, the flow range of the raw material will be limited, which may easily cause a flow dead angle, so the first flow guiding slope is provided to guide the material at the corners, thereby reducing the dead zone of raw material flow and improving the flow efficiency of raw materials.

[0009] In some embodiments, a guide plate is provided on one side of the limit plate facing the feed port of the extrusion part, and one end of the guide plate facing the feed port of the extrusion part is hinged to the inner wall of the discharge port, and an elastic member is provided between the guide plate and the inner wall of the discharge port of the extrusion part, which is used to drive the end of the guide plate to always abut against the first guide slope or side wall of the limit plate. Thus, as the limit plate protrudes from the inner wall of the discharge port of the extrusion part, the guide plate is driven to tilt, thereby blocking the dead angle of raw material flow between the limit plate and the inner wall of the discharge port, thereby playing a guiding role for most of the raw materials and ensuring the smooth flow of the raw materials, and as the limit plate slides into the inner wall of the discharge port, the edge of the guide plate is always abutted against the side wall or the first guide slope of the limit plate under the action of the elastic member, and the raw materials remaining on the first guide slope can be scraped off, thereby improving the cleaning efficiency and avoiding the raw materials remaining in the dead zone that are difficult to maintain and clean.

[0010] In some embodiments, when the limit plate is received in the inner wall of the extrusion outlet, the end of the guide plate completely blocks the first guide slope. Thus, the guide plate completely blocks the first guide slope, avoiding the generation of a dead zone for the flow of raw materials and ensuring the smooth flow of raw materials.

[0011] In some embodiments, the synchronization components are provided in plurality and are located on one side or both sides of the limit plate. Thus, since the final product is a plate body, the synchronization components can be provided on one side or both sides of the height adjustment component, and the purpose of adjusting the width of the final plate can be achieved.

[0012] In some embodiments, the feed port of the extrusion part is set as a constriction in the direction of the discharge port of the extrusion part. Thus, the structural setting of the constriction can guide the raw material while squeezing the raw material, so that the raw material can fill each area in the flow channel more fully.

[0013] In some embodiments, a second guiding slope is provided on one side of the position limiting module facing the feed port of the extrusion part, thereby guiding the flowing raw material, reducing the accumulation of the raw material and improving the flow efficiency of the raw material.

[0014] In some embodiments, the second flow guiding slopes of adjacent limiting modules are connected to each other. Therefore, when driving a single limiting module or multiple limiting modules, the second flow guiding slopes will not cause flow dead angles, thereby improving the efficiency of raw material flow.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The height and width of the discharge port can be adjusted to adapt to the manufacture of different products; and it indirectly avoids the replacement of the template, making the manufacture of products of different sizes more flexible; 2. Simple structure, height adjustment and width adjustment are all achieved by driving the limiter through the driving part to limit the size of the discharge port; 3. The synchronization component can be used to adjust the width of the final product, and can also be used in conjunction with the height adjustment component to control the thickness of the final sheet product as a whole.

[0016] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram showing the overall structure of an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown; Figure 2 An internal cross-sectional view of an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the structure of a height and width adjustment component in an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown; Figure 4A cross-sectional schematic diagram of a height adjustment component in an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of a synchronization component in an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown; Figure 6 A top view of a limit module in an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown; Figure 7 A top view of a plurality of limit modules in an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown.

[0018] Explanation of symbols 1. Extrusion part; 11. Feed inlet; 12. Discharge outlet; 2. Mounting part; 21. Mounting hole; 3. Height adjustment component; 31. Limiting plate; 311. First guide slope; 32. First driving member; 33. Heating rod; 34. Guide plate; 35. Elastic member; 4. Synchronization component; 41. Limiting module; 411. Second guide slope; 42. Second driving member. DETAILED DESCRIPTION

[0019] Hereinafter, preferred embodiments (or implementation modes) of the present invention will be described in detail with reference to the accompanying drawings.

[0020] Reference below Figure 1-Figure 7 To describe an extruder die plate adjustment mechanism of the present invention.

[0021] Figure 1 The overall structure diagram of an extruder die plate adjustment mechanism according to an embodiment of the present invention is shown. Figure 1 As shown, the extruder head template adjustment mechanism provided in this embodiment includes an extrusion part 1 in the middle, and mounting parts 2 located on both sides of the extrusion part 1. The mounting part 2 is provided with a plurality of mounting holes 21 spaced along its length direction, so that the template can be mounted on the end of the extruder head by mounting components such as bolts, so that the extrusion pressure of the raw material on the extrusion part 1 is more constant. A feed port 11 is provided on one side of the extrusion part 1, and a discharge port 12 connected to the feed port 11 is provided on the other side of the extrusion part 1. The discharge port 12 is a rectangular opening, so that the raw material is discharged through the discharge port 12 of the extrusion part 1 after being melted and extruded, and is formed into a plate-like finished product structure through traction, spreading, cooling, plasticization and shaping.

[0022] Figure 2 The figure shows an internal cross-sectional view of an extruder die plate adjustment mechanism according to an embodiment of the present invention. Figure 2As shown, the feed port 11 of the extrusion part 1 is also a rectangular opening, the size of which is larger than the size of the discharge port 12 of the extrusion part 1, and inside the extrusion part 1, the feed port 11 is a necking structure in the direction of the discharge port 12, so that the raw material in the molten state is squeezed through the inner wall of the necking, and the raw material is filled more fully and evenly, thereby improving the success rate of product molding.

[0023] Figure 3 The figure shows a schematic diagram of the structure of the height and width adjustment component in the die plate adjustment mechanism of an extruder die head according to an embodiment of the present invention. Figure 3 As shown, the height and width adjustment mechanism includes a height adjustment component 3 distributed along the length direction of the discharge port 12, and a synchronization component 4 located on one side of the height adjustment component 3. The synchronization component 4 can not only realize the position effect of the height adjustment component 3, that is, the height adjustment, but also realize the role of limiting the width of the discharge port 12, thereby achieving the role of adjusting the width of the final product.

[0024] Among them, the height adjustment component 3 includes a limit plate 31, which is arranged along the length direction of the extrusion part 1 and is vertically arranged. A channel that cooperates with the limit plate 31 is opened on the inner wall of the discharge port 12 of the extrusion part 1, thereby realizing the sliding of the limit plate 31 in the channel. When the limit plate 31 protrudes from the edge of the inner wall of the discharge port 12 of the extrusion part 1, the limit plate 31 limits the space for the flow of molten raw materials to achieve the purpose of controlling the height of the final plate product. The height adjustment component 3 also includes a first drive member 32, which can be a linear drive device such as an electric push rod and a hydraulic cylinder. The body of the first drive component is fixed to the outer wall of the extrusion part 1, and its output end is fixed to the surface of the limit plate 31. The sliding operation of the limit plate 31 is realized by controlling the first drive member 32.

[0025] In some embodiments, a plurality of first drive members 32 may be provided and arranged at intervals, so that the force on the limit plate 31 is more balanced, and the service life of the limit plate 31 is also extended. Moreover, the height adjustment component 3 is preferably arranged on the upper wall of the discharge port 12. Due to the displacement operation of the limit plate 31, it is inevitable that an angle will be left between the limit plate 31 and the inner wall of the discharge port 12. If the height adjustment component 3 is arranged on the upper inner wall of the discharge port 12, even if part of the raw material is squeezed in the angle between the limit plate 31 and the upper inner wall of the discharge port 12, the raw material will be gathered in the overall raw material flow direction under the action of gravity, which is conducive to the replacement of raw materials in the angle area. If the height adjustment component 3 is arranged on the lower inner wall of the discharge port 12. The principle of the backlog between the limit plate 31 and the inner wall of the discharge port 12 has poor fluidity under the action of weight, which is easy to cause accumulation. As the temperature difference changes, the plasticization efficiency is accelerated, which is easy to cause blockage to the overall raw material flow.

[0026] Figure 4The cross-sectional view of the height adjustment component 3 in the die plate adjustment mechanism of an extruder die head according to an embodiment of the present invention is shown. Figure 4 As shown, a strip-shaped heating rod 33 is arranged inside the bottom area of ​​the limit plate 31 along its length direction. The heating rod 33 emits heat when powered on, and can radiate heat to the raw materials flowing in the surrounding area, so as to avoid the temperature of the raw materials from dropping and thus affecting the reduction of its flow efficiency. Therefore, the heating rod 33 ensures the smooth flow of the raw materials in the area of ​​the discharge port 12.

[0027] Furthermore, a first guide slope 311 is provided on the side of the bottom of the limiting plate 31 facing the feed port 11 of the extrusion part 1. As the raw material flows from the feed port 11 of the extrusion part 1 toward the discharge port 12, the limiting plate 31 protrudes from the inner wall of the discharge port 12. The first guide slope 311 can guide part of the raw material toward the edge of the limiting plate 31, thereby reducing the accumulation of the raw material at the angle between the limiting plate 31 and the inner wall of the discharge port 12, thereby accelerating the flow efficiency of the raw material during the extrusion process.

[0028] In order to reduce the accumulation of raw materials at the angle between the limit plate 31 and the inner wall of the discharge port 12, a strip-shaped guide plate 34 is provided on the side of the limit plate 31 facing the feed port 11, and the guide plate 34 is attached to the upper inner wall of the discharge port 12, and the end of the guide plate 34 facing the feed port 11 is hinged to the upper inner wall of the discharge port 12, and the end of the guide plate 34 extends to the end of the first guide slope 311 on the limit plate 31, and a plurality of elastic members 35 are provided in the middle to connect the upper inner wall of the discharge port 12 and the guide plate 34 to each other; the elastic member 35 can be a spring or a torsion spring, and the purpose is to apply an upward force to the guide plate 34 so that the guide plate 34 remains in a returned state. When the limiting plate 31 is in the initial state, the limiting plate 31 is located in the channel, the end of the limiting plate 31 is flush with the end of the channel, and the guide plate 34 is arranged horizontally, and the end of the guide plate 34 abuts against the end of the first guide slope 311, thereby shielding the first guide slope 311. When the raw material flows in the extrusion part 1, the guide plate 34 reduces the gap in the raw material flow process, and reduces the sanitary dead corners caused by the accumulation of raw materials inside the extrusion part 1. When the limiting plate 31 protrudes from the edge of the inner wall of the discharge port 12, it drives the guide plate 34 to rotate, so that the guide plate 34 is always abutted against the first guide slope 311 or the side wall of the limiting plate 31 under the action of the elastic member 35, so that the guide plate 34 and the first guide slope 311 form a continuous guide section, which reduces a large range of dead corners and also helps the smoothness of the raw material flow.

[0029] When the limiting plate 31 returns to the channel, the side of the guide plate 34 always abuts against the first guide slope 311, thereby scraping off the raw materials remaining on the first guide slope 311. Therefore, the guide plate 34 firstly fills the gap of the first guide slope 311; secondly, it slows down the slope of the raw material flow and improves the smoothness of the raw material flow; thirdly, it can scrape off the raw materials remaining on the first guide slope 311, which is convenient for subsequent cleaning operations.

[0030] Figure 5 The schematic diagram of the structure of the synchronization component 4 in the die plate adjustment mechanism of an extruder die head according to an embodiment of the present invention is shown. Figure 5 As shown, the synchronization component 4 includes a limit module 41 and a second drive member 42; the limit module 41 is located at one end of the limit plate 31 along its length direction, and the limit module 41 is connected to the upper inner wall of the discharge port 12 by sliding along the height direction of the discharge port 12. The second drive member 42 can be a linear drive device such as an electric push rod and a hydraulic cylinder. The body of the second drive member 42 is fixed to the outer wall of the extrusion part 1, and its output end is fixed to the surface of the limit module 41. The synchronization component 4 can cooperate with the height adjustment component 3 as a common component. The limit plate 31 is driven by the first drive member 32, and the limit module 41 is driven by the second drive member 42, so that the driving plate and the limit module 41 have the same descending height, thereby adjusting the thickness of the final product. If the width of the final product is to be adjusted, the limit module 41 is driven by the second drive member 42 to descend to a state where its end abuts against the other side of the discharge port 12, thereby limiting the width of the discharge port 12, so that the width of the final formed plate product reaches the adjustment.

[0031] In some embodiments, multiple synchronization components 4 can be provided, and they can be provided at one end or both ends of the height adjustment component 3, so as to be finally determined according to the actual requirements for preparing the plate or the layout of the associated equipment in the workshop, and will not affect the quality of the final plate. Moreover, the addition of multiple synchronization components 4 can cooperate with the height adjustment component 3 to adjust the thickness of the plate. It can also achieve the control of the width of plates of different models.

[0032] Figure 6 FIG. 4 is a top view of a limit module 41 in an extruder die plate adjustment mechanism according to an embodiment of the present invention. Figure 6 As shown, the side of the limiting module 41 facing the feed port 11 is also provided with a second guiding slope 411 for guiding the raw material toward the discharge port 12. When the limiting module 41 is lowered to a state where its end abuts against the inner wall on the other side of the discharge port 12, the second guiding slope 411 is provided to help reduce the accumulation of the raw material inside the extrusion part 1, thereby playing a good guiding role for the raw material.

[0033] Figure 7FIG. 4 is a top view showing a plurality of limit modules 41 in an extruder die plate adjustment mechanism according to an embodiment of the present invention. Figure 7 As shown, in some embodiments, when a plurality of limit modules 41 are located on the same side of the limit plate 31, adjacent limit modules 41 abut against each other, and the second guide slopes 411 on the back side of each limit module 41 are connected to each other, thereby reducing the angle dead zone of the raw material flow and ensuring the smooth flow of the raw material.

[0034] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0036] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An extruder die plate adjustment mechanism, characterized in that: include: An extrusion portion (1), and a mounting portion (2) located on one side or both sides of the extrusion portion (1); An extrusion part (1) is provided with a feed port (11) on one side and a discharge port (12) in communication with the feed port (11) on the other side, wherein a height and width adjustment mechanism is provided on the inner wall of the discharge port (12), and the height and width adjustment mechanism comprises a height adjustment component (3) and a synchronization component (4) located at one end or both ends of the height adjustment component (3); The height adjustment assembly (3) comprises a limit plate (31) slidably connected to the upper wall or the lower wall of the discharge port (12), and a first driving member (32) fixed to the extrusion portion (1) and driving the limit plate (31) to slide in a height direction of the discharge port (12); The synchronization component (4) comprises: A limiting module (41), which abuts against one side of the limiting plate (31) and is interconnected with the inner wall of the discharge port (12); The second driving member (42) is fixed to the outer wall of the extrusion portion (1) and is interconnected with the limiting module (41) for driving the limiting module (41) to slide and connect to the inner wall on the other side of the discharge port (12).

2. The extruder die plate adjustment mechanism according to claim 1, characterized in that: A heating rod (33) is provided inside the end of the limiting plate (31) along its length direction.

3. The extruder die plate adjustment mechanism according to claim 2, characterized in that: A first flow guiding slope (311) is provided on the side of the bottom edge of the limiting plate (31) in contact with the raw material and facing the feed port (11) of the extrusion part (1).

4. The extruder die plate adjustment mechanism according to claim 3, characterized in that: A guide plate (34) is provided on one side of the limiting plate (31) facing the feed port (11) of the extrusion portion (1); one end of the guide plate (34) facing the feed port (11) of the extrusion portion (1) is hinged to the inner wall of the discharge port (12); an elastic member (35) is provided between the guide plate (34) and the inner wall of the discharge port (12) of the extrusion portion (1) for driving the end of the guide plate (34) to always abut against the first guide slope (311) or the side wall of the limiting plate (31).

5. The extruder die plate adjustment mechanism according to claim 4, characterized in that: When the limiting plate (31) is received in the inner wall of the discharge port (12) of the extrusion portion (1), the end of the guide plate (34) completely blocks the first flow guide slope (311).

6. The extruder die plate adjustment mechanism according to claim 1, characterized in that: The synchronization components (4) are provided in plurality and are located on one side or both sides of the limiting plate (31).

7. The extruder die plate adjustment mechanism according to claim 1, characterized in that: The feed port (11) of the extrusion part (1) is arranged to be contracted in the direction of the discharge port (12) of the extrusion part (1).

8. The extruder die plate adjustment mechanism according to claim 1, characterized in that: A second flow guiding slope (411) is provided on the side of the limiting module (41) facing the feed port (11) of the extrusion portion (1).

9. The extruder die plate adjustment mechanism according to claim 8, characterized in that: The second flow guiding inclined surfaces (411) of adjacent limiting modules (41) are connected to each other.

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