Automatic material receiving and conveying device of plastic extruder

Abstract

The utility model discloses an automatic material receiving and conveying device of a plastic extruder, which comprises a rack, a screw extruder, a traction conveying roller group and a cooling tank, wherein the screw extruder and the traction conveying roller group are arranged on the rack; the cooling tank is positioned between the screw extruder and the traction conveying roller group; and movable connecting rods are movably hinged between the two ends of a roller shaft of the pressing roller and the two ends of roller shafts of the conveying carrier rollers on the two sides, the two ends of the roller shaft of the pressing roller are slidably connected into guide grooves vertically formed in the two sides of the inner wall of the cooling groove, and adjusting lead screws are vertically and rotationally installed in the guide grooves and are in transmission connection with the ends of the roller shaft of the pressing roller. The four movable connecting rods simultaneously drive the conveying carrier rollers on the two sides to synchronously ascend or descend, the effect of rapidly adjusting the height of the pressing roller and the height of the two conveying carrier rollers is achieved, the pressing roller, the two conveying carrier rollers and the pressing roller are movably connected through the movable connecting rods and mutually restrained, and the height distances between the two conveying carrier rollers and the pressing roller are kept consistent all the time; debugging is not needed after height adjustment, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an automatic material receiving and conveying device for a plastic extruder. Background Art

[0002] The automatic material receiving and conveying device for a plastic extruder generally refers to the cooling and conveying mechanism downstream of the extrusion die of the plastic extruder. Plastic extruders are divided into twin-screw extruders and single-screw extruders. The material is fed through a feed hopper, and the plastic particles are heated, melted, and mixed. The plastic particles are then extruded through the die and cooled and shaped in a matching cooling trough to prevent damage to the shape after extrusion. Existing cooling and conveying devices cool the extruded material through a cooling trough filled with cold water. Specifically, a traction conveying roller group on one side of the cooling trough pulls the extruded material into the cooling trough. The material is then pressed into the cold water in the cooling trough by the pressure rollers inside the cooling trough and then conveyed downstream through the traction conveying roller group.

[0003] The heights of the multiple rollers in the cooling trough of existing automatic material receiving and cooling conveyor systems are individually adjustable. During production, the heights of the conveyor rollers and pressure rollers must be individually adjusted based on the varying properties of the plastics and cooling time requirements. This allows the extruded material to be pressed into the cooling trough to varying depths. The deeper the depth, the greater the distance the extruded material has to travel into the cooling water, resulting in a longer cooling time. Conversely, the shallower the depth, the less distance the extruded material has to travel into the cooling water, resulting in a shorter cooling time. This cumbersome operation, as the rollers require calibration after each height adjustment, is a major challenge. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides an automatic material feeding and conveying device for a plastic extruder, which is used to solve the problem that the height of each roller in the cooling trough of the existing automatic material feeding and conveying device for a plastic extruder is adjusted individually and the operation is relatively troublesome.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatic material feeding and conveying device for a plastic extruder, comprising a frame, a screw extruder and a traction conveying roller group installed on the frame, and a cooling trough located between the screw extruder and the traction conveying roller group, a pressure roller is horizontally installed inside the cooling trough, and conveying rollers are horizontally installed on both sides of the cooling trough, and movable connecting rods are movably hinged between the two ends of the roller shaft of the pressure roller and the two ends of the roller shaft of the conveying rollers on both sides, and a slide groove is provided at the center position of the movable connecting rod, and a fixed shaft movably inserted in the slide groove is fixedly connected to the inner wall of the cooling trough, and the two ends of the roller shaft of the pressure roller are slidably connected to the guide grooves vertically arranged on both sides of the inner wall of the cooling trough, and an adjusting screw is vertically rotatably installed in the guide groove, and the adjusting screw is linked to the roller shaft end of the pressure roller.

[0006] Preferably, the sliding groove is a long groove and is arranged along the axial direction of the movable connecting rod.

[0007] Preferably, the guide groove is vertically arranged at a position of a bisector of the length of the cooling groove, and the bottom of the inner wall of the guide groove and the bottom of the inner wall of the cooling groove are located in the same horizontal plane.

[0008] Preferably, both ends of the roller shaft of the conveying roller are slidably connected to the front side and the back side of the inner wall of the cooling trough.

[0009] Preferably, the adjusting screw is rotatably connected to the sealed bearing seat at the bottom of the inner wall of the guide groove, and the lower end of the adjusting screw passes through and extends to the interior of the frame to be transmission-connected to the electric drive mechanism.

[0010] Preferably, the electric drive mechanism includes a servo motor, a synchronous wheel fixedly mounted on the surfaces of the two adjusting screw rods, and a synchronous belt for transmission connection between the two synchronous wheels.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The utility model provides a pressure roller, a conveying roller and a movable connecting rod connecting the two. When the adjusting screw is rotated to drive the pressure roller to move up and down, the conveying rollers on both sides are simultaneously driven to rise or fall synchronously through the four movable connecting rods, so that the height of the pressure roller and the two conveying rollers can be quickly adjusted. The three are movably connected and restrained by the movable connecting rod. The height distance between the two conveying rollers and the pressure roller is always consistent. No debugging is required after the height is adjusted. The operation is simple and convenient, which solves the problem that the height of each roller in the cooling trough of the existing automatic material feeding and conveying device of the plastic extruder is adjusted individually and the operation is relatively troublesome. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the corresponding position of the cooling groove of the utility model;

[0015] Figure 3 This is a structural diagram of the corresponding position of the pressure roller of the utility model;

[0016] Figure 4 This is a schematic diagram of the electric drive mechanism and the adjusting screw structure of the utility model.

[0017] In the figure: 1. Frame; 2. Screw extruder; 3. Traction conveyor roller group; 4. Cooling trough; 5. Pressure roller; 6. Conveyor roller; 7. Movable connecting rod; 8. Slide; 9. Fixed shaft; 10. Guide groove; 11. Adjusting screw; 12. Sealed bearing seat; 13. Electric drive mechanism; 131. Servo motor; 132. Synchronous pulley; 133. Synchronous belt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1-4 As shown, the utility model provides a technical solution: an automatic material receiving and conveying device for a plastic extruder, comprising a frame 1, a screw extruder 2 and a traction conveying roller group 3 installed on the frame 1, and a cooling trough 4 located between the screw extruder 2 and the traction conveying roller group 3, a pressure roller 5 is horizontally installed inside the cooling trough 4, and conveying rollers 6 are horizontally installed on both sides of the cooling trough 4, and the roller shaft ends of the conveying rollers 6 are slidably connected to the front and back sides of the inner wall of the cooling trough 4;

[0020] The two ends of the roller shaft of the pressure roller 5 and the two ends of the roller shaft of the conveying rollers 6 on both sides are respectively movably hingedly installed with movable connecting rods 7. A slide groove 8 is provided at the center of the movable connecting rod 7. The slide groove 8 is a long groove and is arranged along the axial direction of the movable connecting rod 7. A fixed shaft 9 that is movably inserted into the slide groove 8 is fixedly connected to the inner wall of the cooling groove 4;

[0021] The two ends of the roller shaft of the pressure roller 5 are slidably connected to the guide grooves 10 vertically arranged on both sides of the inner wall of the cooling trough 4. The guide grooves 10 are vertically arranged at the position of the bisector of the length of the cooling trough 4, and the bottom of the inner wall of the guide groove 10 is located at the same horizontal plane as the bottom of the inner wall of the cooling trough 4. An adjusting screw 11 is vertically rotatably installed in the guide groove 10, and the adjusting screw 11 is connected to the roller shaft end of the pressure roller 5.

[0022] The adjusting screw 11 is rotatably connected to the sealed bearing seat 12 at the bottom of the inner wall of the guide groove 10, and the lower end of the adjusting screw 11 passes through and extends to the interior of the frame 1 and is transmission-connected to the electric drive mechanism 13. The electric drive mechanism 13 includes a servo motor 131, a synchronous wheel 132 fixedly mounted on the surface of the two adjusting screws 11, and a synchronous belt 133 for transmission connection between the two synchronous wheels 132.

[0023] Working principle:

[0024] The plastic particles are added to the screw extruder 2, heated, melted and mixed, and then extruded. They pass above the conveying roller 6 on the left side of the cooling trough 4, pass under the pressure roller 5, then pass above the conveying roller 6 on the right side, and then pass through the traction conveying roller group 3 to be transported downstream. The pressure roller 5 presses the extruded molding material into the cooling trough 4 to be cooled and shaped by cold water;

[0025] By adjusting the rotation of the screw rod 11, the pressure roller 5 is driven to move upward or downward, and the movable connecting rods 7 on both sides are driven to turn up and down synchronously around the fixed axis 9. The movable connecting rod 7 drives the conveying rollers 6 on both sides to move upward or downward synchronously, so as to realize the rapid adjustment of the height of the pressure roller 5 and the conveying rollers 6 on both sides, and adjust the different immersion effects of the extruded molding material in the cold water. The pressure roller 5 and the two conveying rollers 6 are movably connected and restrained by the movable connecting rod 7. The height distance between the two conveying rollers 6 and the pressure roller 5 is always consistent. No debugging is required after the height adjustment, and the operation is simple and convenient.

[0026] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic material receiving and conveying device for a plastic extruder, comprising a frame (1), a screw extruder (2) and a traction conveying roller group (3) mounted on the frame (1), and a cooling trough (4) located between the screw extruder (2) and the traction conveying roller group (3), characterized in that: A pressure roller (5) is horizontally installed inside the cooling trough (4), and conveying rollers (6) are horizontally installed on both sides of the cooling trough (4). Both ends of the roller shaft of the pressure roller (5) and the two ends of the roller shaft of the conveying rollers (6) on both sides are respectively movably hingedly installed with movable connecting rods (7), and a slide groove (8) is provided at the center position of the movable connecting rod (7). A fixed shaft (9) movably inserted into the slide groove (8) is fixedly connected to the inner wall of the cooling trough (4), and both ends of the roller shaft of the pressure roller (5) are slidably connected to the guide grooves (10) vertically arranged on both sides of the inner wall of the cooling trough (4). An adjusting screw (11) is vertically rotatably installed in the guide groove (10), and the adjusting screw (11) is linked to the roller shaft end of the pressure roller (5).

2. The automatic material receiving and conveying device for a plastic extruder according to claim 1, characterized in that: The sliding groove (8) is a long groove and is arranged along the axial direction of the movable connecting rod (7).

3. The automatic material receiving and conveying device for a plastic extruder according to claim 1, characterized in that: The guide groove (10) is vertically arranged at a position of a bisector of the length of the cooling groove (4), and the bottom of the inner wall of the guide groove (10) and the bottom of the inner wall of the cooling groove (4) are located on the same horizontal plane.

4. The automatic material receiving and conveying device for a plastic extruder according to claim 1, characterized in that: Both ends of the roller shaft of the conveying roller (6) are slidably connected to the front side and the back side of the inner wall of the cooling trough (4).

5. The automatic material receiving and conveying device for a plastic extruder according to claim 1, characterized in that: The adjusting screw rod (11) is rotatably connected to the sealing bearing seat (12) at the bottom of the inner wall of the guide groove (10), and the lower end of the adjusting screw rod (11) passes through and extends into the interior of the frame (1) to be transmission-connected to the electric drive mechanism (13).

6. The automatic material receiving and conveying device for a plastic extruder according to claim 5, characterized in that: The electric drive mechanism (13) comprises a servo motor (131), a synchronous wheel (132) fixedly mounted on the surfaces of two adjusting screw rods (11), and a synchronous belt (133) for transmission connection between the two synchronous wheels (132).

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