A discharge width adjustable extrusion device for plastic sheets
By designing a wide-width adjustment type discharge device including an extrusion head, an extrusion mold and an extrusion pipe, the wide-width adjustment drive motor and bevel gear system can be used to achieve accurate adjustment of the wide-width discharge, and scrape the plastic layer by driving cylinders and triangular scrapers, the problem of cumbersome and high cost of adjusting the wide-width discharge in the prior art is solved, and efficient and accurate plate production is achieved.
Patent Information
- Application Number
- CN202520320876.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The existing plastic extrusion devices need to be disassembled and installed when adjusting the width of the discharge, which is cumbersome and time-consuming. At the same time, they need to be equipped with extrusion devices of different models, which is relatively expensive.
A wide-width adjustment extrusion device for discharge is designed including an extrusion head, an extrusion mold and an extrusion pipe. The driving motor drives the bevel gear and threaded rod through a wide-width adjustment drive, drives the front adjustment shield movement, realizes accurate adjustment of the wide-width discharge, and scrapes away the plastic layer by driving the cylinder and triangular scraper to avoid residue.
The precise adjustment of the width of the discharge is achieved, the operation is simplified, the adjustment time is reduced, the residue and adhesion of the plastic layer is avoided, and the production cost is reduced.
Smart Images
Figure CN222712790U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the relevant field of extrusion devices, in particular to a discharge width adjustable extrusion device for plastic plates. Background Art
[0002] As an indispensable material in modern industry, plastic sheets are widely used in many fields such as construction, packaging, transportation, electronics, etc. As an important plastic processing equipment, plastic extruder plays a vital role in the production of plastic sheets. It is a device that extrude molten plastic through a mold. Its working principle is to force the molten plastic material through the screw to convey and compress it. The molten plastic is extruded through the molding hole of the mold to form a continuous sheet, which is then solidified by a cooling device and finally cut into the required length by a cutting device. This production method has significant advantages such as high production efficiency, saving raw materials, and stable product quality.
[0003] As the market demand for plastic sheets becomes more diverse, the requirements for extrusion devices are getting higher and higher. Fixed mold extrusion devices can no longer meet the market demand for plastic sheets of different widths. For example, when processing plastic sheets with different widths, it is necessary to replace molds of different sizes to adjust the sheet width. Each adjustment requires the original extrusion device to be disassembled first, which takes a long time to disassemble. When selecting a new extrusion device, it needs to be installed on the extruder, which also takes a long time to install and disassemble, and the operation is cumbersome. At the same time, different extrusion devices need to be configured for plastic sheets of different widths, and the mold cost is high, which is not conducive to reducing production costs. Utility Model Content
[0004] The purpose of the utility model is to provide an extrusion device with adjustable discharge width for plastic sheets, so as to solve the problems proposed in the above-mentioned background technology that the extrusion device needs to be disassembled and reinstalled when adjusting the discharge width, the operation is cumbersome and time-consuming, and different types of extrusion devices need to be equipped, which is costly.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a discharge width adjustable extrusion device for plastic sheet material, comprising an extrusion head, an extrusion die and an extrusion branch pipe, the extrusion head is located at the rear end of the extrusion die, the extrusion branch pipe is located in the extrusion die, front adjustment shielding plates are arranged on both sides of the front end of the extrusion die, and the inner side of the upper end of the front adjustment shielding plate is integrally connected with an upper fixed vertical plate; outer L-shaped fixed plates are welded and fixed on both sides of the front end of the upper end of the extrusion die, a two-way drive threaded rod is rotatably connected between the two outer L-shaped fixed plates through bearings, and the upper fixed vertical plate passes through the two-way drive threaded rod and is threadedly connected with the two-way drive threaded rod; a width adjustment drive motor is installed at the upper end of the extrusion die, and the output shaft end of the width adjustment drive motor is connected with a first bevel gear, and one side of the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixed to the outside of the middle part of the two-way drive threaded rod through a keyway; a transverse limit sliding rod is fixed on the outer side of the upper fixed vertical plate along the front end of the two-way drive threaded rod, and the transverse limit sliding rod slides along the outer L-shaped fixed plate.
[0006] Preferably, an inner rubber scraper strip is fixed on the inner side of the rear end of the front adjustment shielding plate and at a position corresponding to the extruded branch pipe.
[0007] Preferably, the outer side of the outer L-shaped fixing plate is coaxially connected to the third bevel gear with the bidirectional drive threaded rod, the upper end of the outer L-shaped fixing plate is rotatably connected to the fourth bevel gear, the fourth bevel gear is meshed with the third bevel gear, the lower end of the outer L-shaped fixing plate is coaxially connected to the fourth bevel gear with a lower threaded rod, the outer side of the lower end of the outer L-shaped fixing plate is fixed with a longitudinal limiting sliding rod, and the lower threaded rod and the outer side of the longitudinal limiting sliding rod are commonly connected to the longitudinal sliding plate.
[0008] Preferably, a driving cylinder is installed at the rear end of the longitudinal sliding plate, and a triangular scraper block is connected to the output rod end of the driving cylinder, and the front end of the triangular scraper block extends into the front adjustment shielding plate.
[0009] Preferably, the front adjustment baffle is composed of an adjustment plate body and an external fixed frame body, the external fixed frame body is integrally connected to the outside of the rear end of the adjustment plate body, the rear end surface of the adjustment plate body is provided with a sealing layer, and the adjustment plate body slides against the front end surface of the extrusion mold.
[0010] Preferably, the rear end of the lower end surface inside the outer fixed frame forms an inclined blanking surface.
[0011] Preferably, the front ends of both sides of the lower end of the extrusion die are both equipped with lower collecting troughs via bolts.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] (1) In the utility model, the meshing rotation of the first bevel gear and the second bevel gear is driven by the width adjustment driving motor, which drives the two-way driving threaded rod to rotate, and then drives the front adjustment shielding plate to move through the threaded connection relationship to achieve precise adjustment of the discharge width. Compared with replacing the extrusion die on the extrusion device, it is not only easy to operate, but also has high adjustment accuracy. It does not need to be equipped with different types of extrusion devices, and can meet the production needs of plates of different sizes and specifications;
[0014] (2) In the utility model, when the discharge width is adjusted, the front adjusting baffle plate is driven to move outward; the longitudinal sliding plate moves downward through the meshing connection between the first bevel gear and the second bevel gear, and when the material blocking position of the front adjusting baffle plate is exposed, the driving cylinder drives the triangular scraper block to move and contact the front adjusting baffle plate, and move downward along its material blocking position, so as to promptly scrape off the plastic layer adhered to the rear end surface, thereby effectively avoiding the residue and adhesion of the plastic layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of a discharge width adjustable extruder for plastic plates from a main perspective of the utility model;
[0016] Figure 2 It is a schematic diagram of the overall structure of a discharge width adjustable extruder for plastic plates from a rear perspective of the utility model;
[0017] Figure 3 It is a side view of a discharge width adjustable extruder for plastic plates of the utility model;
[0018] Figure 4 It is a top view of a discharge width adjustable extruder for plastic plates of the utility model;
[0019] Figure 5 This is an enlarged view of the structure at point A of a discharge width adjustable extruder for plastic plates of the utility model.
[0020] In the figure: 1. extrusion head; 2. extrusion mold; 3. extrusion branch pipe; 4. front adjustment baffle plate; 5. inner rubber scraper; 6. upper fixed vertical plate; 7. width adjustment drive motor; 8. first bevel gear; 9. second bevel gear; 10. two-way drive threaded rod; 11. outer L-shaped fixed plate; 12. transverse limit sliding rod; 13. third bevel gear; 14. fourth bevel gear; 15. lower threaded rod; 16. longitudinal limit sliding rod; 17. longitudinal sliding plate; 18. driving cylinder; 19. triangular scraper block; 20. lower collecting trough; 21. adjustment plate body; 22. outer fixed frame; 23. inclined feeding surface. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0022] See also Figure 1-Figure 5 The utility model provides an embodiment: a discharge width adjustable extrusion device for plastic plates, comprising an extrusion head 1, an extrusion die 2 and an extrusion branch pipe 3, wherein the extrusion head 1 is located at the rear end of the extrusion die 2, and the extrusion branch pipe 3 is located inside the extrusion die 2.
[0023] (1) Design of the extrusion die 2 and the front adjustment baffle plate 4: Front adjustment baffle plates 4 are provided on both sides of the front end of the extrusion die 2 for adjusting the discharge width; an inner rubber scraper strip 5 is fixed on the inner side of the rear end of the front adjustment baffle plate 4 at a position corresponding to the extrusion branch pipe 3 for scraping off the excess plastic layer on the surface of the extrusion branch pipe 3 when adjusting the discharge width, thereby avoiding residual and waste of the plastic layer. The provision of the inner rubber scraper strip 5 further improves the production efficiency and quality of the sheet material and reduces the production cost.
[0024] An upper fixed vertical plate 6 is integrally connected to the inner side of the upper end of the front adjustment shielding plate 4, which is used for threaded connection with the bidirectional drive threaded rod 10. External L-shaped fixed plates 11 are welded and fixed on both sides of the front end of the upper end of the extrusion mold 2, and the bidirectional drive threaded rod 10 is rotatably connected between the two external L-shaped fixed plates 11 through bearings. A width adjustment drive motor 7 is installed on the upper end of the extrusion mold 2, and the output shaft end of the width adjustment drive motor 7 is connected to a first bevel gear 8, and one side of the first bevel gear 8 is meshedly connected to a second bevel gear 9, and the second bevel gear 9 is fixed to the outside of the middle part of the bidirectional drive threaded rod 10 through a keyway; the upper fixed vertical plate 6 passes through the bidirectional drive threaded rod 10 and is threadedly connected to the bidirectional drive threaded rod 10, so as to realize the left and right movement of the front adjustment shielding plate 4. A transverse limiting sliding rod 12 is fixed to the front end of the bidirectional driving threaded rod 10 along the outer side of the upper fixed vertical plate 6. The transverse limiting sliding rod 12 slides along the outer L-shaped fixed plate 11 to ensure the stability of the front adjustment baffle plate 4 during movement, making the adjustment of the discharge width more stable and precise, thereby improving the production quality of the plate.
[0025] (2) Design of the adjustment plate body 21 and the external fixed frame 22: The front adjustment baffle plate 4 is composed of the adjustment plate body 21 and the external fixed frame 22. The external fixed frame 22 is integrally connected to the rear end of the adjustment plate body 21 to enhance the structural strength of the adjustment plate body 21. The rear end surface of the adjustment plate body 21 is provided with a sealing layer to improve the sealing performance with the front end surface of the extrusion die 2. The adjustment plate body 21 slides against the front end surface of the extrusion die 2 to ensure stability and accuracy when adjusting the discharge width. This not only improves the structural strength and sealing performance of the front adjustment baffle plate 4, but also ensures stability and accuracy when adjusting the discharge width.
[0026] The rear end of the lower end surface of the outer fixed frame 22 forms an inclined material discharge surface 23, which is used to allow the scraped plastic layer to slide smoothly into the lower collecting tank 20. The front ends of both sides of the lower end of the extrusion mold 2 are both bolted with lower collecting tanks 20, which are used to collect the scraped plastic layer for subsequent cleaning and recycling. This part of the design makes the cleaning and maintenance process more convenient and reduces production costs.
[0027] (3) Design of the longitudinal sliding plate 17 and the triangular scraper 19: The outer side of the outer L-shaped fixed plate 11 is coaxially connected to the bidirectional drive threaded rod 10 with the third bevel gear 13, and the upper end of the outer L-shaped fixed plate 11 is rotatably connected to the fourth bevel gear 14, and the fourth bevel gear 14 is meshed with the third bevel gear 13. The lower end of the outer L-shaped fixed plate 11 is coaxially connected to the fourth bevel gear 14 with the lower threaded rod 15, and the outer side of the lower end of the outer L-shaped fixed plate 11 is fixed with a longitudinal limit sliding rod 16. The lower threaded rod 15 and the longitudinal limit sliding rod 16 are externally connected to the longitudinal sliding plate 17, and the longitudinal sliding plate 17 is threadedly connected to the lower threaded rod 15, which is used to drive the triangular scraper 19 to move up and down. The rear end of the longitudinal sliding plate 17 is installed with a driving cylinder 18, and the output rod end of the driving cylinder 18 is connected to the triangular scraper 19. The front end of the triangular scraper 19 extends into the front adjustment shielding plate 4, and is used to scrape off the plastic layer adhered to the rear end surface of the front adjustment shielding plate 4. This design can ensure that when the discharge width is adjusted, the plastic layer adhered to the rear end surface of the front adjustment baffle plate 4 is scraped off in time, avoiding the residue and adhesion of the plastic layer, and further improving the production efficiency and quality of the plate.
[0028] A blade may be embedded in the inner front end of the triangular scraper block 19 to achieve a better scraping effect on the plastic layer. In order to prevent the blade from damaging the sealing layer, a limiting structure is provided between the longitudinal sliding plate 17 and the triangular scraper block 19 so that the extension distance of the triangular scraper block 19 remains consistent.
[0029] Working principle: the discharge width is adjusted according to the requirements of the plastic sheet; the width adjustment drive motor 7 drives the first bevel gear 8 to rotate, and the meshing connection relationship between the first bevel gear 8 and the second bevel gear 9 drives the two-way drive threaded rod 10 to rotate, and the threaded connection relationship between the two-way drive threaded rod 10 and the upper fixed vertical plate 6 drives the front adjustment baffle plate 4 to move until the extrusion branch pipe 3 of the corresponding size is exposed.
[0030] When adjusting outward to increase the discharge width, the front adjustment shielding plate 4 is normally driven to move outward. When adjusting inward to reduce the discharge width, the front adjustment shielding plate 4 is also driven to move outward. The longitudinal sliding plate 17 moves downward through the meshing connection between the first bevel gear 8 and the second bevel gear 9. When the blocking position of the front adjustment shielding plate 4 is exposed, the driving cylinder 18 drives the triangular scraper 19 to move and contact the front adjustment shielding plate 4; when the front adjustment shielding plate 4 moves outward and is exposed, the triangular scraper 19 moves downward along the blocking position of the front adjustment shielding plate 4, and promptly scrapes off the plastic layer adhered to the rear end face of the front adjustment shielding plate 4. The plastic layer reaches the lower collection tank 20 through the inclined discharge surface 23 and is collected. The lower collection tank 20 is cleaned by removing the bolts.
[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A discharge width adjustable extrusion device for plastic plates, comprising an extrusion head (1), an extrusion die (2) and an extrusion branch pipe (3), wherein the extrusion head (1) is located at the rear end of the extrusion die (2), and the extrusion branch pipe (3) is located inside the extrusion die (2), characterized in that: Front adjustment shielding plates (4) are arranged on both sides of the front end of the extrusion die (2), and the inner side of the upper end of the front adjustment shielding plates (4) is integrally connected with an upper fixed vertical plate (6); external L-shaped fixed plates (11) are welded and fixed on both sides of the front end of the upper end of the extrusion die (2), and a bidirectional driving threaded rod (10) is rotatably connected between the two external L-shaped fixed plates (11) via a bearing, and the upper fixed vertical plate (6) passes through the bidirectional driving threaded rod (10) and is threadedly connected to the bidirectional driving threaded rod (10); the extrusion die (2) A width adjustment drive motor (7) is installed at the upper end, the output shaft end of the width adjustment drive motor (7) is connected to a first bevel gear (8), one side of the first bevel gear (8) is meshingly connected to a second bevel gear (9), and the second bevel gear (9) is fixed to the outside of the middle part of the bidirectional drive threaded rod (10) through a keyway; a transverse limiting sliding rod (12) is fixed to the outside of the upper fixed vertical plate (6) along the front end of the bidirectional drive threaded rod (10), and the transverse limiting sliding rod (12) slides along the outer L-shaped fixed plate (11).
2. The extruder with adjustable discharge width for plastic sheet material according to claim 1, characterized in that: An inner rubber scraper strip (5) is fixed on the inner side of the rear end of the front adjustment shielding plate (4) at a position corresponding to the extruded branch pipe (3).
3. The extruder with adjustable discharge width for plastic sheet material according to claim 1, characterized in that: The outer side of the outer L-shaped fixing plate (11) is coaxially connected to a third bevel gear (13) with the bidirectional drive threaded rod (10); the upper end of the outer L-shaped fixing plate (11) is rotatably connected to a fourth bevel gear (14), the fourth bevel gear (14) is meshed with the third bevel gear (13); the lower end of the outer L-shaped fixing plate (11) is coaxially connected to the fourth bevel gear (14); a longitudinal limit sliding rod (16) is fixed to the outer side of the lower end of the outer L-shaped fixing plate (11); and the lower threaded rod (15) and the longitudinal limit sliding rod (16) are externally connected to a longitudinal sliding plate (17) together.
4. The extruder with adjustable discharge width for plastic sheet material according to claim 3, characterized in that: A driving cylinder (18) is installed at the rear end of the longitudinal sliding plate (17), and a triangular scraper block (19) is connected to the output rod end of the driving cylinder (18), and the front end of the triangular scraper block (19) extends into the front adjustment shielding plate (4).
5. The extruder with adjustable discharge width for plastic sheet material according to claim 1, characterized in that: The front adjustment shielding plate (4) is composed of an adjustment plate body (21) and an external fixing frame (22); the external fixing frame (22) is integrally connected to the rear end of the adjustment plate body (21); the rear end surface of the adjustment plate body (21) has a sealing layer; the adjustment plate body (21) slides in contact with the front end surface of the extrusion die (2).
6. The extruder with adjustable discharge width for plastic sheet material according to claim 5, characterized in that: The rear end of the lower end surface inside the outer fixed frame (22) forms an inclined blanking surface (23).
7. The extruder with adjustable discharge width for plastic sheet material according to claim 6, characterized in that: The front ends of both sides of the lower end of the extrusion die (2) are both mounted with lower collecting troughs (20) via bolts.