Blow molding head of three-layer blow molding machine

Abstract

The utility model discloses a blow molding head of a three-layer blow molding machine, which relates to the technical field of plastic processing and comprises a box body, a fixed mold, a quick assembly component and an adjusting component, the fixed die is fixedly arranged at the top of the box body, a die sleeve is arranged at the top of the fixed die, a die core is arranged on the inner surface of the die sleeve, and a bolt is fixedly connected to the bottom of the die core. According to the utility model, the mouth mold core is arranged on the mold sleeve, then the bolt is aligned with the threaded hole of the movable mold, and the movable mold sleeve is screwed to finish preliminary installation. And then the threaded sleeve is aligned with the locking seat, the insertion rod is inserted into the extrusion bracket, and then the locking nut is screwed, so that the threaded sleeve is tightly meshed with the inner surface of the locking seat. Along with descending of the threaded sleeve, the inner diameter of the threaded sleeve presses and extrudes a slope at the top of the support, the support is promoted to gather towards the center, and the insertion rod is firmly locked. According to the device, the blow molding head structure can be conveniently and quickly mounted and replaced, the complexity of replacing the whole die head is avoided, the time is saved, the efficiency is improved, and the work of operators is greatly facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic processing, specifically a three -layer blow molding machine blow molding head. BACKGROUND

[0002] Blow molding is a kind of processing technology widely applied to the production of plastic products, especially suitable for the manufacture of hollow products, such as plastic bottles, barrels, cans and the like. Three-layer blow molding machine is the upgrading application of blow molding technology, which utilizes multilayer co-extrusion technology to produce multilayer structure products with special properties by combining raw materials with different properties in layers in the equipment.

[0003] In the prior art, the blow molding head is the core component of the three-layer blow molding machine, which is responsible for realizing multilayer co-extrusion by special designed flow channel through the molten plastic provided by multiple extruders, and finally forming the multilayer structure of the hollow product. The blow molding die head of the patent file with the publication number CN220052850U controls the rotation of the threaded rod synchronously by two motors, preventing the belts of the belt pulleys from wearing out, causing the threaded rods on both sides to rotate out of sync, and causing damage to internal parts.

[0004] However, the device is inconvenient to replace the blow molding head during use. When replacing the blow molding head conventionally, the entire die head needs to be replaced, which often results in a long replacement time. Since the die head is in a high-temperature state during replacement, it may also cause the operator to be scalded, thereby reducing the work efficiency and causing much inconvenience to the operator.

[0005] Based on this, a three-layer blow molding machine blow molding head is now provided, which can eliminate the drawbacks of existing devices. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a three-layer blow molding machine blow molding head to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A three-layer blow molding machine blow molding head, comprising: a box body;

[0009] A fixed mold is fixedly arranged on the top of the box body, and the top of the fixed mold is provided with a die bushing, the inner surface of the die bushing is provided with a die core, the bottom of the die core is fixedly connected with a bolt, and the inner surface of the fixed mold is slidably provided with a movable mold, and a blow molding gap is arranged between the fixed mold and the movable mold;

[0010] A quick mounting assembly is fixedly arranged on the top of the fixed mold for quickly mounting the fixed mold;

[0011] An adjusting assembly is fixedly arranged on the inner surface of the box body for automatically adjusting the flow rate of extrusion.

[0012] On the basis of the above technical solutions, the utility model further provides the following optional technical solutions:

[0013] In an alternative: fast -assembling assembly includes locking seat, locking seat fixedly arranged at the top of the fixed mold, the inner surface of locking seat is connected with the threaded sleeve, the top of threaded sleeve is fixedly connected with locking nut, the inner surface of threaded sleeve and locking nut is slidably connected with the plug rod, the top of plug rod is fixedly connected with the limiting plate, the inner surface of locking seat is fixedly connected with the extrusion support.

[0014] In an alternative: adjusting assembly includes blanking slope, blanking slope fixedly arranged at the inner surface of the box, the inner surface of box is fixedly connected with the blocking support, the inner surface of blocking support is slidably connected with the baffle.

[0015] In an alternative: the inner surface of box is fixedly provided with drive assembly, for driving baffle adjustment.

[0016] In an alternative: drive assembly includes sliding support, sliding support fixedly arranged at the inner surface of the box, the outer surface of sliding support is fixedly connected with motor, the output end of motor extends to the inside of sliding support and extends to the inside of sliding support through the outer surface of sliding support, the output end of motor is fixedly connected with screw rod, sliding support is slidably connected with sliding block, the outer surface of screw rod is threadedly connected with the inner surface of sliding block, the top of sliding block is fixedly connected with the bottom of baffle.

[0017] In an alternative: the top of extrusion support is provided with extrusion slope matched with threaded sleeve.

[0018] In an alternative: the inner surface of blocking support is provided with sliding groove matched with baffle.

[0019] In an alternative: the inner surface of sliding support is provided with sliding groove matched with sliding block.

[0020] Compared with the prior art, the utility model has the advantages as follows:

[0021] 1, the utility model discloses a die core is placed on the die sleeve, then the bolt is aligned with the thread hole of the movable mold, and the die sleeve is screwed to complete preliminary installation. Then the threaded sleeve is aligned with the locking seat, the plug rod is inserted into the extrusion support, and then the locking nut is tightened, so that the threaded sleeve and the inner surface of the locking seat are closely engaged. With the descending of the threaded sleeve, the inner diameter thereof compresses the slope at the top of the extrusion support, so that the support is gathered to the center, and the plug rod is firmly locked. The device is convenient for quick installation and replacement of the blow molding head structure, avoids the cumbersome replacement of the whole die head, saves time, improves efficiency, and greatly facilitates the work of the operator.

[0022] 2, the utility model discloses a motor drives screw rotation, because screw and two sliders adopt reverse thread connection, when screw rotates, two sliders will move towards the center direction, and further adjust the gap between baffle, through the control this gap, can realize the accurate regulation of material flow. The device simple design, convenient operation, need not complex procedure to complete the adjustment of material flow, provide great convenience for operating personnel, effectively improve work efficiency and the flexibility of operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is structural schematic diagram of the utility model.

[0024] Figure 2 It is structural schematic diagram of die sleeve in the utility model.

[0025] Figure 3 It is structural schematic diagram of quick-mounting assembly in the utility model.

[0026] Figure 4 It is structural schematic diagram of adjusting assembly in the utility model.

[0027] Figure 5 It is structural schematic diagram of sliding support in the utility model.

[0028] Mark annotation: 1, box body;2, fixed die;3, die sleeve;4, die core;5, bolt;6, movable die;7, blow molding gap;8, locking seat;9, threaded sleeve;10, locking nut;11, plug rod;12, limit plate;13, extrusion support;14, blanking slope;15, blocking support;16, baffle;17, sliding support;18, motor;19, screw;20, slider. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed with the drawings and examples.

[0030] In one embodiment, as shown in Figures 1-5 A three-layer blow molding machine blow molding head, comprising: box body 1, fixed die 2, quick-mounting assembly and adjusting assembly;Fixed die 2 is fixedly arranged at the top of box body 1, and the top of fixed die 2 is provided with die sleeve 3, the inner surface of die sleeve 3 is provided with die core 4, the bottom of die core 4 is fixedly connected with bolt 5, the inner surface of fixed die 2 is slidably provided with movable die 6, and blow molding gap 7 is arranged between fixed die 2 and movable die 6;The quick-mounting assembly is fixedly arranged at the top of fixed die 2 and is used for quickly mounting fixed die 2;The adjusting assembly is fixedly arranged on the inner surface of box body 1 and is used for automatically adjusting the flow of extrusion, the setting of die sleeve 3 facilitates the nesting installation of die core 4, and the setting of bolt 5 facilitates the threaded installation of die sleeve 3.

[0031] In one embodiment, as shown in Figure 2 and Figure 3 , the quick-mounting assembly comprises a locking seat 8 fixedly arranged at the top of the fixed mold 2, the inner surface of the locking seat 8 is threadedly connected with a threaded sleeve 9, the top of the threaded sleeve 9 is fixedly connected with a locking nut 10, the inner surfaces of the threaded sleeve 9 and the locking nut 10 are slidingly connected with a plug rod 11, the top of the plug rod 11 is fixedly connected with a limiting plate 12, the inner surface of the locking seat 8 is fixedly connected with an extrusion bracket 13, the top of the extrusion bracket 13 is provided with an extrusion slope matched with the threaded sleeve 9, the provision of the extrusion slope facilitates the inner diameter of the threaded sleeve 9 to extrude the extrusion slope when the threaded sleeve 9 is threadedly lowered, so that the extrusion bracket 13 is gathered to the center, thereby locking the plug rod 11, the provision of the locking nut 10 facilitates the operator to screw the locking nut 10, and the provision of the limiting plate 12 facilitates the installation of the plug rod 11.

[0032] In one embodiment, as shown in Figure 4 , the adjusting assembly comprises a discharging slope 14 fixedly arranged at the inner surface of the box body 1, the inner surface of the box body 1 is fixedly connected with a blocking bracket 15, the inner surface of the blocking bracket 15 is slidingly connected with a baffle 16, the inner surface of the box body 1 is fixedly provided with a driving assembly for driving the baffle 16 to adjust, the inner surface of the blocking bracket 15 is provided with a sliding groove matched with the baffle 16, facilitating the sliding expansion of the baffle 16, and the provision of the discharging slope 14 facilitates the guiding of the material.

[0033] In one embodiment, as shown in Figure 5 , the driving assembly comprises a sliding bracket 17 fixedly arranged at the inner surface of the box body 1, the outer surface of the sliding bracket 17 is fixedly connected with a motor 18, the output end of the motor 18 penetrates through the outer surface of the sliding bracket 17 and extends into the interior of the sliding bracket 17, the output end of the motor 18 is fixedly connected with a screw rod 19, the sliding bracket 17 is slidingly connected with a sliding block 20, the outer surface of the screw rod 19 is threadedly connected with the inner surface of the sliding block 20, the top of the sliding block 20 is fixedly connected with the bottom of the baffle 16, the inner surface of the sliding bracket 17 is provided with a sliding groove matched with the sliding block 20, facilitating the left and right sliding of the sliding block 20 on the sliding bracket 17, the screw thread directions of the two sliding blocks 20 are opposite, so that when the screw rod 19 rotates, it drives the two sliding blocks 20 to synchronously move to the middle, the sliding block 20 drives the two baffles 16 to adjust to the middle when it moves, thereby controlling the flow of the material according to the gap between the baffles 16, the motor 18 is a synchronous motor, facilitating the synchronous rotation of the two screw rods 19, and the provision of the screw rod 19 facilitates the movement of the sliding block 20 when it rotates.

[0034] The above-mentioned embodiment discloses a three-layer blow molding machine blow molding head, wherein the die core 4 is installed on the die sleeve 3, then the bolt 5 is aligned with the threaded hole on the movable die 6, and the die sleeve 3 is screwed to be installed, the threaded sleeve 9 is aligned with the locking seat 8, the plug rod 11 is inserted into the inside of the extrusion support 13, then the locking nut 10 is screwed so that the threaded sleeve 9 is engaged with the inner surface of the locking seat 8, the threaded sleeve 9 is gradually lowered, the inner diameter of the threaded sleeve 9 extrudes the extrusion slope arranged at the top of the extrusion support 13, so that the extrusion support 13 is close to the center, and the plug rod 11 is locked, the device can quickly install and replace the structure of the blow molding head, without replacing the whole die head, saving time cost, improving work efficiency, and bringing convenience to the operator, the output end of the motor 18 drives the screw rod 19 to rotate, since the screw rod 19 is threadedly connected with the two sliding blocks 20, and the thread directions of the two sliding blocks 20 are opposite, the two sliding blocks 20 drive the baffle 16 to move to the center for adjustment, so that the flow of the material is controlled according to the gap between the baffles 16, the device is simple in structure and convenient to operate, and brings convenience to the operator.

[0035] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A three-layer blow molding machine blow head, comprising: The box (1); The fixed mold (2) is fixedly arranged at the top of the box (1), the top of the fixed mold (2) is provided with a die sleeve (3), the inner surface of the die sleeve (3) is provided with a die core (4), the bottom of the die core (4) is fixedly connected with a bolt (5), the inner surface of the fixed mold (2) is slidably provided with a movable mold (6), and the blow molding gap (7) is arranged between the fixed mold (2) and the movable mold (6); It is characterized by further comprising a quick mounting assembly, which is fixedly arranged at the top of the fixed mold (2) and used for quickly mounting the fixed mold (2); The adjusting assembly is fixedly arranged on the inner surface of the box (1) and used for automatically adjusting the flow of extrusion.

2. A blow head for a three-layer blow molding machine according to claim 1, characterized in that The quick mounting assembly comprises a locking seat (8) fixedly arranged at the top of the fixed mold (2), a threaded sleeve (9) threadedly connected with the inner surface of the locking seat (8), a locking nut (10) fixedly connected with the top of the threaded sleeve (9), a plug rod (11) slidably connected with the inner surfaces of the threaded sleeve (9) and the locking nut (10), a limiting plate (12) fixedly connected with the top of the plug rod (11), and an extrusion support (13) fixedly connected with the inner surface of the locking seat (8).

3. A blow head for a three-layer blow molding machine according to claim 1, characterized in that, The adjusting assembly comprises a discharging slope (14) fixedly arranged on the inner surface of the box (1), a blocking support (15) fixedly connected with the inner surface of the box (1), and a baffle (16) slidably connected with the inner surface of the blocking support (15).

4. A blow head for a three-layer blow molding machine according to claim 3, characterized in that The inner surface of the box (1) is fixedly provided with a driving assembly for driving the baffle (16) to adjust.

5. A blow head for a three-layer blow molding machine according to claim 4, characterized in that The driving assembly comprises a sliding support (17) fixedly arranged on the inner surface of the box (1), a motor (18) fixedly connected with the outer surface of the sliding support (17), a screw rod (19) fixedly connected with the output end of the motor (18) and extending into the sliding support (17), a sliding block (20) slidably connected with the sliding support (17), and the outer surface of the screw rod (19) is threadedly connected with the inner surface of the sliding block (20).

6. A blow head for a three-layer blow molding machine according to claim 2, characterized in that, The top of the extrusion support (13) is provided with an extrusion slope matched with the threaded sleeve (9).

7. A blow head for a three-layer blow molding machine according to claim 3, characterized in that, The inner surface of the blocking support (15) is provided with a sliding groove matched with the baffle (16).

8. A blow head for a three-layer blow molding machine according to claim 5, characterized in that The inner surface of the sliding support (17) is provided with a sliding groove matched with the sliding block (20).

Images