A double screw co-extrusion molding device for decorative board production

Abstract

This utility model relates to the technical field of extrusion molding equipment, and discloses a twin-screw co-extrusion molding device for decorative panel production, including twin rods and a connecting box. Its core feature is the inclusion of a limiting mechanism, which comprises a connecting rod and a fixing ring. The connecting rod is fixed to the end of the twin rods and has an annular groove; the fixing ring is fixed inside the connecting box. The limiting mechanism also includes a ball, a spring, and an outer ring. The ball is slidably disposed within the annular groove on the fixing ring, and the outer ring is slidably fitted around the outside of the fixing ring and pushed by the spring, serving to surround the ball. During operation, the ball falls into the annular groove, and the outer ring limits and locks the ball, achieving rapid connection and separation between the twin rods and the connecting box. Preferably, the device also includes a metering mechanism. This utility model, through the rapid disassembly and assembly design of the limiting mechanism, solves the problem of cumbersome and time-consuming replacement of existing twin rods, significantly improving maintenance efficiency and production continuity.

Description

Technical Field

[0001] This utility model relates to the field of extrusion molding equipment technology, and in particular to a twin-screw co-extrusion molding device for the production of decorative panels. Background Technology

[0002] Twin-screw co-extrusion molding units are key equipment for producing decorative panels (such as PVC or WPC sheets). They utilize a motor-driven transmission system within the connecting chamber to rotate the twin screws (i.e., twin rods) in the outer chamber, plasticizing, mixing, and extruding the material.

[0003] During the long-term production of decorative panels, the double rods, as core working components, are subjected to high temperatures, high pressures, and continuous friction from materials, leading to wear. Therefore, regularly inspecting, cleaning, repairing, or replacing the double rods is a necessary maintenance procedure to ensure product quality and equipment lifespan.

[0004] In the existing technology, the ends of the double rods and the output shaft of the connecting box (drive end) are usually fastened with flanges and bolts, or fixed by spline heating and pressing.

[0005] While this rigid fixed connection method can transmit large torques, it reveals serious defects during maintenance. When it is necessary to disassemble the double rods, operators must use special tools (such as wrenches and heaters) to remove the fastening bolts one by one or to separate them by heating. The operating space is small, the labor intensity is high, and the process is cumbersome, time-consuming, and labor-intensive.

[0006] This inefficient disassembly and assembly method resulted in excessive downtime for equipment maintenance, severely impacting the continuity and efficiency of the entire production line and making it unable to meet the demands of rapid production scheduling and timely maintenance.

[0007] Therefore, this utility model proposes a twin-screw co-extrusion molding device for the production of decorative panels to overcome the shortcomings of the prior art. Utility Model Content

[0008] To overcome the above shortcomings, this utility model provides a twin-screw co-extrusion molding device for decorative panel production. It aims to improve the problem in some existing twin-screw co-extrusion molding devices for decorative panel production where the twin rods are fixedly connected to the connecting box (drive end), resulting in cumbersome disassembly process during maintenance and replacement, which is time-consuming and labor-intensive and seriously affects production efficiency.

[0009] This utility model provides a twin-screw co-extrusion molding device for the production of decorative panels, comprising: twin rods, a connecting box, and a limiting mechanism.

[0010] The limiting mechanism includes connecting rod one, connecting rod two, and a fixing ring.

[0011] The connecting rod is fixed to the end of the double rod, and an annular groove is formed on the outer periphery of the connecting rod.

[0012] Furthermore, the second connecting rod is fixed inside the connecting box, and the fixing ring is fixed to the second connecting rod.

[0013] The limiting mechanism also includes a ball, a spring, and an outer ring; the fixed ring has a radial groove, and the ball is slidably disposed in the groove; the outer ring is slidably sleeved on the outside of the fixed ring, and the spring is configured to push the outer ring to axially reset so that the outer ring is sleeved around the ball.

[0014] The structure achieves a quick and reliable connection between the two rods and the drive end by inserting the connecting rod and the fixing ring, and by using the ball falling into the ring groove and being locked by the outer ring. This greatly simplifies the disassembly and assembly process.

[0015] Preferably, the twin-screw co-extrusion molding apparatus for decorative panel production further includes an outer chamber, with the twin screws disposed inside the outer chamber, which provides working space and material conveying channels for the twin screws.

[0016] Preferably, the twin-screw co-extrusion molding apparatus for decorative panel production further includes a metering mechanism, which is fixed to the top of the outer chamber and is used to control the batch and quantity of materials entering the outer chamber.

[0017] Preferably, the twin-screw co-extrusion molding apparatus for decorative panel production further includes a motor, and the metering mechanism includes a connecting plate, which is connected to the output shaft of the motor, and the motor provides stable rotational power to the metering mechanism.

[0018] Preferably, the metering mechanism further includes a fixing component for connecting the connecting plate to the motor drive. The fixing component includes a fixing rod and a rotating ring, which together achieve stable power transmission from the motor to the connecting plate.

[0019] Preferably, a material column is fixed on the connecting plate, and the metering mechanism further includes a feeding port for the initial input of materials, and the material column for carrying and transferring materials.

[0020] Preferably, the outer compartment is provided with a discharge port, and the bottom of the material column is provided with a bottom cover. The bottom cover is used to seal the material column during material transfer to prevent premature material leakage.

[0021] Preferably, the metering mechanism further includes a half plate, which is fixedly disposed above the discharge port. The half plate is configured to support the bottom cover when the material column rotates, and to allow the bottom cover to disengage from the support when the material column rotates to the discharge port position, so as to realize automatic metering of material discharge.

[0022] This utility model has the following beneficial effects: 1. This utility model, by setting a limiting mechanism consisting of a connecting rod, annular groove, fixed ring, ball, spring and outer ring, realizes a ball-locked quick connection between the double rods and the connecting box. It solves the problem of cumbersome disassembly, time-consuming and labor-intensive disassembly, and serious impact on production efficiency caused by the fixed connection (such as flange or bolt) between the double rods and the drive end in the prior art. It achieves the technical effect of ingenious structure, reliable locking, quick disassembly and assembly, and greatly shortening downtime for maintenance.

[0023] 2. This utility model solves the problems of uneven feeding control and easy instantaneous overfeeding leading to double rod blockage in the prior art by setting a quantitative mechanism on the top of the outer chamber, using a motor to drive the connecting plate to rotate the material column, and cooperating with a fixed half plate and the discharge port to achieve volumetric quantitative feeding. It achieves the technical effects of automatic feeding, uniform and controllable feeding, prevention of blockage, and improved production stability. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a twin-screw co-extrusion molding device for decorative panel production proposed in this utility model. Figure 2 This is a schematic diagram of the outer chamber of a twin-screw co-extrusion molding device for decorative panel production proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the outer ring structure of a twin-screw co-extrusion molding device for decorative panel production proposed in this utility model.

[0025] Legend: 1. Double poles; 2. Measuring mechanism; 21. Feeding port; 22. Connecting plate; 23. Material column; 24. Bottom cover; 25. Half plate; 26. Discharge port; 27. Fixing component; 271. Fixing rod; 272. Rotating ring; 3. Restriction mechanism; 31. Connecting rod one; 32. Annular groove; 33. Ball; 34. Circular groove; 35. Fixing ring; 36. Spring; 37. Outer ring; 38. Connecting rod two; 4. Outer compartment; 5. Connecting box; 6. Motor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0027] Reference Figures 1 to 4 This utility model provides a twin-screw co-extrusion molding device for the production of decorative panels, which aims to solve the problem in the prior art where the twin rods 1 are connected and fixed to the connecting box 5 (drive end), resulting in complicated and time-consuming disassembly during maintenance and replacement.

[0028] like Figure 1 As shown, a twin-screw co-extrusion molding apparatus for decorative panel production includes twin rods 1 and a connecting box 5, and also includes a limiting mechanism 3, which is used to realize a quick and detachable connection between the twin rods 1 and the connecting box 5.

[0029] Reference Figure 1 , Figure 3 and Figure 4 The limiting mechanism 3 is described in detail below: The limiting mechanism 3 includes a connecting rod 31, which is fixed to the end of the double rod 1. The connecting rod 31 has an annular groove 32 on its outer periphery. The limiting mechanism 3 also includes a connecting rod 38, which is fixed inside the connecting box 5. The limiting mechanism 3 also includes a fixing ring 35, which is fixed to the connecting rod 38. The connecting rod 31 is configured to be inserted into the fixing ring 35. The fixing ring 35 has a radial circular groove 34, and a ball 33 is slidably disposed in the circular groove 34. The limiting mechanism 3 also includes a spring 36 and an outer ring 37, which is slidably sleeved on the outside of the fixing ring 35. The spring 36 is configured to push the outer ring 37 to axially reset so that the outer ring 37 is sleeved around the ball 33.

[0030] Reference Figure 1 and Figure 2 A twin-screw co-extrusion molding apparatus for decorative panel production also includes an outer chamber 4, with twin rods 1 disposed inside the outer chamber 4. To solve the problem of blockage caused by inaccurate feeding control in the prior art, a metering mechanism 2 is also included, which is fixed to the top of the outer chamber 4.

[0031] Reference Figure 1 and Figure 2To achieve automated operation of the metering mechanism 2, a motor 6 is also included. The metering mechanism 2 includes a connecting plate 22, which is connected to the output shaft of the motor 6 for rotation under the drive of the motor 6. This transmission connection ensures that the metering mechanism 2 can obtain a stable and reliable power source for subsequent material metering.

[0032] Reference Figure 2 The metering mechanism 2 also includes a fixing component 27, which is used to drive the connecting plate 22 to the motor 6. The fixing component 27 includes a fixing rod 271 and a rotating ring 272. The rotating ring 272 cooperates with the fixing rod 271 to transmit the power of the motor 6 to the connecting plate 22. In order to realize the material containment and transfer, a material column 23 is fixed on the connecting plate 22. The material column 23 rotates synchronously with the connecting plate 22. The metering mechanism 2 also includes a feeding port 21, which is fixedly set to receive material from the outside and fill it into the material column 23 that rotates below it.

[0033] Reference Figure 2 The outer chamber 4 is provided with a discharge port 26, which corresponds to the unloading position of the metering mechanism 2. The bottom of the material column 23 is provided with a bottom cover 24, which is used to close the bottom of the material column 23 during the transfer process to realize the automatic control of the unloading action.

[0034] Reference Figure 2 and Figure 3 The metering mechanism 2 also includes a half plate 25, which is fixedly disposed above the discharge port 26 and located on the rotation path of the material column 23. The half plate 25 is configured to support the bottom cover 24 when the material column 23 rotates, keeping the bottom cover 24 closed. When the material column 23 rotates to the position of the discharge port 26, the material column 23 rotates out of the support range of the half plate 25. At this time, the bottom cover 24 is allowed to detach from the support and open, realizing automatic material unloading.

[0035] The implementation principle of this application embodiment is as follows: When feeding is required, the motor 6 is started. The motor 6 drives the connecting plate 22 to rotate through the fixing component 27. The fixing component 27 includes a fixing rod 271 and a rotating ring 272, which are used to stably transmit power. The connecting plate 22 drives the material column 23 fixedly connected to it to rotate counterclockwise synchronously. External material is added from the feeding port 21 and falls into the empty material column 23 that has rotated to its lower position. The material column 23 continues to rotate, and its bottom cover 24 slides on the fixed half plate 25. The half plate 25 supports the bottom cover 24 at this time to prevent material leakage. When the material column 23 rotates to the top of the outer chamber 4 above the discharge port 26, the material column 23 rotates out of the support range of the half plate 25, the bottom cover 24 loses support and opens, and the material falls into the outer chamber 4 through the discharge port 26 under the action of gravity. The material is extruded by the double rod 1. The material column 23 continues to rotate to enter the next cycle, realizing continuous quantitative feeding.

[0036] When the double rod 1 needs repair or replacement, the operator operates the limiting mechanism 3. During disassembly, the outer ring 37 is manually pulled back, causing the outer ring 37 to slide axially and compress the spring 36, disengaging the inner wall of the outer ring 37 from the radial limit of the ball 33. At this time, the double rod 1 is pulled outward, causing the double rod 1 to move the connecting rod 31 out. When the connecting rod 31 moves out, its inclined surface on the annular groove 32 will radially push the ball 33 into the circular groove 34 of the fixing ring 35, thereby completely separating the connecting rod 31 from the fixing ring 35. To achieve quick disassembly of the double rod 1 and the connecting box 5, during installation, the connecting rod 31 is aligned with the fixing ring 35 and inserted. The end of the connecting rod 31 pushes the ball 33 radially back into the circular groove 34. When the circular groove 32 reaches the position of the ball 33, the ball 33 falls into the circular groove 32 under its own weight or the indirect action of the spring 36. At the same time, the spring 36 pushes the outer ring 37 to automatically reset. The outer ring 37 is re-fitted around the ball 33 to prevent the ball 33 from coming out of the circular groove 32, thus achieving quick locking.

Claims

1. A twin-screw co-extrusion molding apparatus for the production of decorative panels, comprising twin screws (1) and a connecting box (5); Its features are, It also includes a limiting mechanism (3), which includes a connecting rod one (31) fixed to the end of the double rod (1), and an annular groove (32) is provided on the outer periphery of the connecting rod one (31). The limiting mechanism (3) also includes a connecting rod two (38) fixed inside the connecting box (5). The limiting mechanism (3) also includes a fixing ring (35) fixed to the connecting rod two (38). (31) is configured to be inserted into the fixing ring (35), the fixing ring (35) having a radial circular groove (34) and a ball (33) slidably disposed in the circular groove (34). The limiting mechanism (3) also includes a spring (36) and an outer ring (37), the outer ring (37) being slidably sleeved on the outside of the fixing ring (35). The spring (36) is configured to push the outer ring (37) to axially reset so as to sleeve the outer ring (37) around the ball (33).

2. The twin-screw co-extrusion molding apparatus for decorative panel production according to claim 1, characterized in that, It also includes an outer compartment (4), and the double rod (1) is disposed inside the outer compartment (4).

3. The twin-screw co-extrusion molding apparatus for decorative panel production according to claim 2, characterized in that, It also includes a metering mechanism (2), which is fixed to the top of the outer compartment (4).

4. A twin-screw co-extrusion molding apparatus for decorative panel production according to claim 3, characterized in that, It also includes a motor (6), and the metering mechanism (2) includes a connecting plate (22), which is connected to the output shaft of the motor (6) via a transmission.

5. A twin-screw co-extrusion molding apparatus for decorative panel production according to claim 4, characterized in that, The quantitative mechanism (2) further includes a fixing component (27), which is used to drive the connecting plate (22) to the motor (6). The fixing component (27) includes a fixing rod (271) and a rotating ring (272).

6. A twin-screw co-extrusion molding apparatus for decorative panel production according to claim 5, characterized in that, A material column (23) is fixed on the connecting plate (22), and the quantitative mechanism (2) also includes a feeding port (21).

7. A twin-screw co-extrusion molding apparatus for decorative panel production according to claim 6, characterized in that, The outer chamber (4) is provided with a discharge port (26), and the bottom of the material column (23) is provided with a bottom cover (24).

8. A twin-screw co-extrusion molding apparatus for decorative panel production according to claim 7, characterized in that, The metering mechanism (2) further includes a half plate (25), which is fixedly disposed above the feed inlet (26). The half plate (25) is configured to support the bottom cover (24) when the feed column (23) rotates, and to allow the bottom cover (24) to disengage from the support when the feed column (23) rotates to the position of the feed inlet (26).

Images