Plastic master batch extrusion device

Abstract

The utility model relates to the technical field of plastic production equipment, in particular to a plastic master batch extrusion device which comprises an extrusion cylinder, a feeding port and an extrusion motor are arranged on the extrusion cylinder, and the extrusion motor is connected with an extrusion shaft provided with a spiral extrusion plate; a discharge port is formed in the extrusion cylinder, and a discharge plate is mounted on the discharge port through a quick release structure; the quick-release structure adopts a structure similar to a quick-release flange structure, the discharge plate can be locked or unlocked only by screwing a knob, discharge plates with different aperture specifications can be quickly detached and replaced conveniently, the detaching and replacing process is convenient and quick, direct contact with the discharge plate is not needed, meanwhile, a stable and reliable locking structure can be provided for the discharge plate, and the discharge plate can be locked or unlocked conveniently. The discharging plate is prevented from falling off in the working process; and a rapid cooling mechanism is further arranged, so that the discharging plate can be rapidly cooled when the discharging plate is disassembled, and an operator is prevented from being scalded.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production equipment, in particular to a plastic masterbatch extrusion device. Background Art

[0002] Plastic masterbatch refers to a concentrate made by adding an abnormal amount of plastic additives into the resin. It can be added into the plastic manufacturing process as an additive, so as to add the corresponding plastic additives into the plastic, and there is no need to add plastic additives separately. Plastic masterbatch comes in a variety of bottles and can provide plastics with a variety of properties, such as filling masterbatch, color masterbatch, flame retardant masterbatch, antistatic masterbatch, wear-resistant masterbatch, etc. The production of plastic masterbatch requires the use of an extruder, which passes the masterbatch raw materials through an extrusion plate to generate strips of plastic masterbatch, which are then cut into small pieces of masterbatch.

[0003] There is a patent with application number CN202223444739.0, which discloses a plastic masterbatch extrusion device, including a horizontally arranged extruder body and an extrusion screw arranged in the extruder body, the rear end of the extrusion screw passes through the extruder body and is connected to a motor, the front end of the extrusion screw is arranged near the discharge port of the extruder body, and the discharge port of the extruder body is provided with a discharge adjustment member; this patent can insert discharge templates with different discharge hole diameters into the die base as needed, so as to effectively control the diameter of the extruded plastic strips; however, this patent lacks a fixing structure for the discharge template, and there is a risk that the discharge template may be disengaged from the die base due to lateral force. Utility Model Content

[0004] The utility model aims to provide a plastic masterbatch extrusion device which can provide a reliable fixing effect for a discharge plate on the basis of realizing rapid replacement of the discharge plate.

[0005] Based on the above purpose, the utility model adopts the following technical solutions:

[0006] A plastic masterbatch extrusion device comprises an extrusion barrel, characterized in that: a discharge port is arranged at one end of the extrusion barrel, and an extrusion motor is arranged at the other end; the output shaft of the extrusion motor is connected to the extrusion shaft, the extrusion shaft is sleeved in the extrusion barrel along the length direction of the extrusion barrel, and a spiral extrusion plate is arranged on the extrusion shaft; a feeding port is arranged on one end of the extrusion barrel close to the extrusion motor, and a discharge plate is installed on the discharge port through a quick-release structure.

[0007] Preferably, the quick-release structure includes a mounting seat arranged on the end of the extruder discharge port, and a mounting through hole matching the discharge port is arranged inside the mounting seat; a quick-release flange structure matching the discharge plate is arranged inside the mounting through hole.

[0008] Preferably, the quick-release flange structure includes a fixed block arranged on the inner side of the mounting seat, a pair of short connecting blocks are connected to the fixed block through an axial hole structure, and the ends of the pair of connecting blocks are respectively connected to a pair of limit blocks through the axial hole structure; the ends of the pair of limit blocks are respectively connected to a pair of long connecting blocks through the axial hole structure, and the ends of the long connecting blocks are connected to the flange controller.

[0009] Preferably, the flange controller is arranged on the outer side of the other end of the mounting base opposite to the fixed block, and the flange controller includes a knob screw rod rotatably connected to the mounting base; a knob is arranged at the end of the knob screw rod, and a control block is arranged in threaded cooperation with the screw rod part of the knob screw rod; the control block is connected to the long connecting block through an axial hole structure, and a sliding limit frame is arranged in cooperation with the control block.

[0010] Preferably, the discharge plate is a circular plate structure with a plurality of discharge through holes arranged on it; a limiting flange cooperating with the limiting block is arranged on the side of the discharge plate, an arc-shaped disassembly plate is arranged on the outer surface of the discharge plate, and a groove cooperating with the disassembly plate is arranged on the mounting seat.

[0011] Preferably, a cooling mechanism is provided at the discharge port, and the cooling mechanism includes a coolant tank; the coolant tank is connected to the top of the mounting seat through a cooling pipe, and the mounting seat is provided with a liquid inlet hole that cooperates with the cooling pipe; a drainage hole is provided at the bottom of the mounting seat, and the drainage hole is connected to a waste liquid collection box through a drainage pipe.

[0012] Preferably, the limit block is provided with a through hole that cooperates with the liquid inlet through hole and the liquid discharge through hole, a coolant flow channel is provided in the discharge plate, and the top and bottom of the side edges of the limit flange are provided with coolant ports connected to the coolant flow channel, and the coolant ports are provided in cooperation with the through holes on the limit block.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a quick-release structure at the discharge port end of the extruder, and the quick-release structure can be used to install a discharge plate; the discharge plate can be quickly replaced to switch discharge holes of different sizes to produce plastic masterbatches of different sizes, and the discharge plate can also be fixed by the quick-release structure to ensure that it is firmly fixed during operation; the quick-release structure adopts a structure similar to a quick-release flange, and controls the position of the limit block by fixing the middle section and using a knob screw to move a control block connected to the limit block, so that the quick-release flange structure can be controlled by rotating the knob screw to lock or unlock the discharge plate, and the operation is simple and easy to understand.

[0015] The utility model is convenient and quick in actual operation, and does not require direct contact with the discharge plate. A protruding disassembly plate can be used to more safely disassemble and replace the discharge plate. Since the material needs to be heated and softened when the plastic masterbatch is extruded, the device can replace the discharge plate without direct contact with the discharge plate, which can prevent the operator from being scalded by the heated discharge plate.

[0016] The utility model can also additionally provide a cooling mechanism. By providing through holes and flow channels for the coolant to pass through on the mounting seat, in the limit block and in the discharge plate, the coolant can be provided through the coolant tank, and the discharge plate can be cooled in advance when it needs to be removed and replaced. The discharge plate can be removed and replaced after cooling is completed, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0018] Figure 2 for Figure 1 A partial enlarged view of the area marked in middle A;

[0019] Figure 3 for Figure 2 A schematic diagram of the internal structure of the middle mounting seat after partial sectioning;

[0020] Figure 4 This is a front view of the internal structure of the mounting base of Example 1 of the utility model;

[0021] Figure 5 This is a front view of the internal structure of the mounting base in the unlocked state in Example 1 of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the discharge plate of Example 1 of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the mounting base in Embodiment 1 of the present utility model;

[0024] Figure 8 This is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0025] Fig. 9 This is a schematic diagram of the discharge plate structure of Example 2 of the utility model.

[0026] In the figure: extruder 1; feeding port 11; discharge port 12; coolant tank 13; waste liquid collection tank 14; extrusion motor 2; mounting seat 3; sliding limit frame 31; knob screw 32; screw 321; control block 33; long connecting block 34; limit block 35; short connecting block 36; fixed block 37; groove 38; discharge plate 4; disassembly plate 41; limit flange 42; coolant port 43. DETAILED DESCRIPTION

[0027] Example 1

[0028] The following is a further explanation of the present invention in conjunction with specific embodiments. Figure 1As shown, the utility model is a basic device for the production of plastic masterbatch, specifically a screw extruder, including a horizontally placed extrusion barrel 1, one end of the extrusion barrel 1 is provided with an extrusion motor 2, the output shaft of the extrusion motor 2 is connected with an extrusion shaft arranged in the extrusion barrel 1, so that the extrusion shaft can be driven by the extrusion motor 2 to rotate; a spiral extrusion plate is arranged on the extrusion shaft, when the extrusion shaft rotates, it can drive the material in the extrusion barrel 1 to move forward; a feeding port 11 is arranged on the extrusion barrel 1, and the feeding port 11 is arranged at one end close to the extrusion motor 2; a discharge port 12 is arranged at the other end of the extrusion barrel 1, and a discharge plate 4 is installed on the discharge port 12 through a quick-release structure. When the material is pushed to the discharge port 12 in the extrusion barrel 1, it can be molded into a strip structure through the discharge plate 4 and then cut into granules.

[0029] The structure of the discharge port 12 is as follows: Figure 2 As shown, a mounting seat 3 is fixedly arranged on the discharge port 12, and the mounting seat 3 is arranged perpendicular to the central axis of the extruder 1. The discharge plate 4 is installed in the mounting seat 3 through a quick release structure arranged on the mounting seat 3; the quick release structure in the mounting seat 3 is as shown in FIG. Figure 3 and Figure 4 As shown, it mainly includes a quick-release flange structure, including a pair of symmetrically arranged limit blocks 35, and the limit blocks 35 are provided with limit grooves for locking the discharge plate 4; the left and right ends of the pair of limit blocks 35 are connected to a pair of long connecting blocks 34 and short connecting blocks 36 by means of axial holes; the other ends of the two short connecting blocks 36 are connected to a fixed block 37 fixedly arranged in the mounting seat 3 by means of axial holes, and the other ends of the two long connecting blocks 34 are also connected to the flange controller by means of axial holes; a spring for the short connecting block 36 can be provided on the fixed block 37 to keep the short connecting block 36 under an outward thrust at all times to prevent the short connecting block 36 from sagging under the action of gravity when the discharge plate 4 is not installed, thereby blocking the space for installing the discharge plate 4.

[0030] The flange controller includes a knob screw rod 32 rotatably connected to the mounting seat 3; the knob screw rod 32 includes a screw rod 321 rotatably connected to the mounting seat, and a knob structure is provided at the end of the screw rod 321 for the convenience of the operator to directly rotate it; a control block 33 is sleeved on the screw rod 321, and a threaded hole cooperating with the screw rod 321 is provided on the inner side of the control block 33, so that the control block 33 can be threadedly engaged with the screw rod 321; a sliding limit frame 31 is sleeved on the outer side of the control block 33, and the sliding limit frame 31 is fixedly connected to the mounting seat 3, and is used to limit the movement of the control block 33 so that it cannot rotate, and cooperates with the screw rod 321 so that rotating the screw rod 321 can drive the control block 33 to slide in the sliding limit frame 31 along the length direction of the screw rod 321; the long connecting block 34 is connected to the control block 33 through the shaft hole structure, so that when the control block 33 moves, it will also drive the long connecting block 34 and the limit block 35 connected to the long connecting block 34 to move together; Figure 4 and Figure 5 As shown, when the control block 33 moves to the far end, it will drive the limit block 35 to clamp the discharge plate 4, and when the control block 33 moves to the near end, it will move the limit block 35 away from the discharge plate 4 to unlock the discharge plate 4 clamped by the limit block 35.

[0031] The structure of the discharge plate 4 is as follows Figure 6 As shown, a plurality of discharge through holes are provided on the discharge plate 4 for passing and shaping the materials; a limiting flange 42 is provided on the side of the discharge plate 4, and the width of the limiting flange 42 matches the width of the upper limit groove of the limiting block 35, so that the limiting flange 42 can be clamped in the limiting groove of the limiting block 35, so that the discharge plate 4 is locked by the limiting block 35; a pair of disassembly plates 41 are provided on the discharge surface of the discharge plate 4, and the disassembly plates 41 are arc-shaped plate structures bent inwardly, which can facilitate the removal of the discharge plate 4 from the mounting seat 3 after unlocking the discharge plate 4; as shown in FIG. Figure 7 As shown, the mounting seat 3 is provided with a groove 38 which cooperates with the disassembly plate 41, which can not only reserve installation space for the disassembly plate 41, but also play a role in positioning the discharge plate 4, so as to facilitate the positioning and installation of the discharge plate 4; the disassembly plate 41 can be covered with a heat-insulating material to form a heat-insulating outer layer to protect the user from being burned when disassembling the discharge plate 4.

[0032] When this embodiment is actually used, a discharge plate with a suitable aperture is selected according to production needs, and then the knob on the knob screw 32 is rotated to move the control block 33 to the proximal end, and the limit block 35 is in a relaxed position to leave space for installing the discharge plate 4, and then the discharge plate 4 is installed on the mounting seat 3; by aligning the groove 38 with the disassembly plate 41, it can be ensured that the discharge plate 4 is installed in an accurate and central position, so that its limit flange 42 matches the position of the limit block 35; then the knob of the knob screw 32 is twisted to move the control block 33 to the distal end, and as the control block 33 moves, the limit block 35 will also move accordingly until the discharge plate 4 is clamped; after completing the installation of the discharge plate 4, the material can be loaded from the feeding port 11 and then the extrusion motor 2 is turned on to start production.

[0033] Example 2

[0034] The difference between this embodiment and embodiment 1 is that Figure 8 As shown, in this embodiment, a cooling mechanism for quickly cooling the discharge plate 4 is provided, including a coolant tank 13 for storing coolant, and a waste liquid collecting tank 14 for collecting cooling waste liquid; the coolant tank 13 is connected to the top of the mounting seat 3 through a pipeline, and the waste liquid collecting tank 14 is connected to the bottom of the mounting seat 3 through a pipeline; a through hole connected to the pipeline is provided at a corresponding position on the mounting seat 3, so that the coolant can enter the mounting seat 3 from the top and be discharged from the bottom.

[0035] like Fig. 9 As shown, in this embodiment, a pair of symmetrically arranged coolant ports 43 are provided on the limiting flange 42 of the discharge plate 4, and a coolant flow channel structure cooperating with the coolant port 43 is also provided inside the discharge plate 4, so that the coolant entering from the coolant port 43 can quickly flow through various parts of the discharge plate 4 from the inside through the coolant flow channel, thereby achieving a rapid cooling effect; in this embodiment, a through hole cooperating with the coolant port 43 and the through hole on the mounting seat 3 is provided on the limiting block 35, so that the coolant can enter the interior of the mounting seat 3 through the through holes on the mounting seat 3 and the limiting block 35, and enter the internal coolant flow channel of the discharge plate 4 through the coolant port 43 to quickly cool the discharge plate 4.

[0036] In actual use of this embodiment, when it is necessary to replace the working discharge plate 4, the outlet tap of the cooling liquid tank 13 can be opened after the machine is shut down to allow the cooling liquid to enter the mounting seat 3 from the pipeline; after the cooling liquid passes through the through holes at the top of the mounting seat 3 and the limit block 35 in turn, it enters the internal cooling liquid flow channel of the discharge plate 4 through the cooling liquid port 43 at the top of the discharge plate 4; the cooling liquid flows through the inside of the discharge plate 4 through the cooling liquid flow channel to quickly cool the discharge plate 4, and the cooling waste liquid will pass through the cooling liquid port 43 at the bottom of the discharge plate 4, flow through the limit plate 35 and the through holes at the bottom of the mounting seat 3, and then be collected in the waste liquid collection box 14 through the pipeline; after the temperature of the discharge plate 4 is reduced to a suitable temperature, the outlet tap of the cooling liquid tank 13 is closed, and after the cooling liquid has all flowed out, the cooled discharge plate 4 can be safely removed as in the operation of Example 1 without worrying about burns.

[0037] The above description is only a further explanation of the present invention in combination with specific embodiments. All descriptions do not limit the protection scope of the present invention. Any changes or replacement solutions that can be easily thought of by technicians in this field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A plastic masterbatch extrusion device, comprising an extrusion barrel, characterized in that: A discharge port is provided at one end of the extrusion barrel, and an extrusion motor is provided at the other end; the output shaft of the extrusion motor is connected to the extrusion shaft, the extrusion shaft is sleeved in the extrusion barrel along the length direction of the extrusion barrel, and a spiral extrusion plate is provided on the extrusion shaft; a feeding port is provided at one end of the extrusion barrel close to the extrusion motor, and a discharge plate is installed on the discharge port through a quick-release structure; the quick-release structure includes a mounting seat arranged on the end of the discharge port of the extrusion barrel, and a mounting through hole matched with the discharge port is provided on the inner side of the mounting seat; a quick-release flange structure matched with the discharge plate is provided in the mounting through hole; the quick-release flange structure includes a fixed block arranged on the inner side of the mounting seat, a pair of short connecting blocks are connected to the fixed block through an axial hole structure, and the ends of the pair of connecting blocks are respectively connected to a pair of limit blocks through the axial hole structure; the ends of a pair of limit blocks are respectively connected to a pair of long connecting blocks through the axial hole structure, and the ends of the long connecting blocks are connected to the flange controller.

2. The plastic masterbatch extrusion device according to claim 1, characterized in that: The flange controller is arranged on the outer side of the other end of the mounting seat opposite to the fixed block, and the flange controller includes a knob screw rod rotatably connected to the mounting seat; a knob is arranged at the end of the knob screw rod, and a control block is arranged in threaded cooperation with the screw rod part of the knob screw rod; the control block is connected to the long connecting block through an axial hole structure, and a sliding limit frame is arranged in cooperation with the control block.

3. The plastic masterbatch extrusion device according to claim 2, characterized in that: The discharge plate is a circular plate structure with a plurality of discharge through holes arranged on it; a limiting flange cooperating with the limiting block is arranged on the side of the discharge plate, an arc-shaped disassembly plate is arranged on the outer surface of the discharge plate, and a groove cooperating with the disassembly plate is arranged on the mounting seat.

4. The plastic masterbatch extrusion device according to claim 3, characterized in that: A cooling mechanism is provided at the discharge port, and the cooling mechanism includes a coolant tank; the coolant tank is connected to the top of the mounting seat through a cooling pipe, and the mounting seat is provided with a liquid inlet through hole that cooperates with the cooling pipe; a drainage through hole is provided at the bottom of the mounting seat, and the drainage through hole is connected to a waste liquid collection box through a drainage pipe.

5. The plastic masterbatch extrusion device according to claim 4, characterized in that: The limit block is provided with a through hole that cooperates with the liquid inlet through hole and the liquid discharge through hole, the discharge plate is provided with a coolant flow channel, and the top and bottom of the side edge of the limit flange are provided with coolant ports connected to the coolant flow channel, and the coolant ports are provided in cooperation with the through holes on the limit block.

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