A core rod steady pushing device

Abstract

The utility model belongs to the technical field of plastic extruder, concretely relates to a core rod stable pushing device, underframe, the long circular groove of underframe surface utilizes first bolt thread connection mounting bracket, the fixed connection fixed frame bottom surface of underframe surface, fixed frame top surface connects the rack, the rack top surface is engaged to be connected in the gear surface of pushing frame surface installation, pushing frame surface sliding connection is in the limit strip surface, the limit strip bottom is connected in fixed frame top surface, pushing frame bottom surface connects pushing disc, pushing frame surface installs servo motor. The utility model, through the cooperation of electric spiral elevating gear and guide pipe installed on mounting bracket, the height of traction platform and the traction frame installed above is adjusted, so that the roller on the traction frame can adapt to the core rod production of different diameters and keep consistent height with the center of extruder head, thereby reducing the use cost of production line, and also reducing the dependence on the proficiency of operators.

Description

Technical Field

[0001] This utility model belongs to the field of plastic extruder technology, specifically relating to a mandrel stabilizing and pushing device. Background Technology

[0002] Plastic extruders are core equipment in the plastics processing industry. They use the pressure and shear force generated by the rotating screw to transform solid plastic into a homogeneous melt and extrude it into molds. The mandrel in a plastic extruder, also known as the die core or mandrel, is a key component in the extrusion die. It is typically a cylindrical, conical, or specially shaped metal component, usually made of wear-resistant and heat-resistant alloy steel with a hardened surface. Installed in the center of the extrusion die, it is used to push the material during operation. The existing mandrel traction device has a fixed structure. When adapting to different mandrel production line devices, different models and heights of traction devices need to be processed together, which increases the cost of production line use and maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a mandrel stable pushing device, which aims to solve the problem that the existing mandrel traction device has a fixed structure and requires different models and heights of traction devices to be processed when adapting to different mandrel production line devices, thereby increasing the cost of production line use and maintenance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mandrel stabilizing and pushing device, comprising a base frame, an elongated groove on the surface of the base frame being threadedly connected to a mounting bracket using a first bolt, a bottom surface of a fixing bracket being fixedly connected to the surface of the base frame, a rack being connected to the top surface of the fixing bracket, the top surface of the rack being meshed with a gear surface mounted on the surface of the pushing bracket, the surface of the pushing bracket being slidably connected to a limiting strip surface, the bottom of the limiting strip being connected to the top surface of the fixing bracket, a pushing disc being connected to the bottom surface of the pushing bracket, and a servo motor being mounted on the surface of the pushing bracket; An electric telescopic cylinder is mounted on the top transverse end surface of the mounting frame. The top disc surface of the electric telescopic cylinder is threadedly connected to the surface of the traction platform using a second bolt. A guide tube is welded to the bottom surface of the traction platform. An inner rod is slidably sleeved on the inner wall surface of the guide tube. The bottom surface of the inner rod is welded to the top of the mounting frame. The top surface of the traction platform abuts against a fixing plate. The top surface of the fixing plate is threadedly connected to the top of the traction platform using a third bolt. The top surface of the traction platform abuts against a traction frame. A threaded rod is rotatably sleeved on the surface of the traction frame. The surface of the threaded rod is threadedly connected to the surface of the fixing plate. A limiting frame is threadedly connected to the inclined end of the traction frame surface using a fourth bolt. The surface of the limiting frame is sleeved on the surface of the roller shaft.

[0005] As a preferred embodiment of the mandrel stabilizing and pushing device of this utility model, the two sets of electric telescopic cylinders, the second bolt, the guide tube and the inner rod are symmetrically distributed at both ends of the traction table.

[0006] As a preferred embodiment of the mandrel stabilizing and pushing device of this utility model, the surface of the fixing plate is provided with a threaded through groove, the shape and size of which are adapted to the threaded rod.

[0007] As a preferred embodiment of the mandrel stabilizing and pushing device of this utility model, the traction frame is a triangular integral structure with a set of circular grooves symmetrically distributed at its bottom, and the shape and size of the circular grooves are adapted to the disc at one end of the threaded rod.

[0008] As a preferred embodiment of the mandrel stabilizing and pushing device of this utility model, the limiting frame is an L-shaped integrated structure with a semi-circular through groove on its surface, and the semi-circular through groove is adapted to the roller shaft. The two limiting frames are symmetrically distributed on the surface of the traction frame.

[0009] As a preferred embodiment of the mandrel stabilizing and pushing device of this utility model, the traction frame has a circular threaded groove longitudinally opened on the transverse end surface, the shape and size of which are adapted to the fourth bolt.

[0010] Compared with the prior art, the beneficial effects of this utility model are: By cooperating with the electric screw lifting device and guide tube installed on the mounting frame, the height of the traction table and the traction frame installed above it can be adjusted, so that the roller on the traction frame can be adapted to the production of mandrels of different diameters. During production, it can maintain the same height as the center of the extruder head, thereby reducing the cost of production line use and reducing the dependence on the skill level of operators. In addition, the spacing between the two sets of symmetrically distributed traction frames is adjusted by using threaded rods, which facilitates the adaptation to the traction requirements of different types of mandrels and improves the adaptability of use. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the base frame and traction platform of this utility model; Figure 3 This is a side view of the base frame and traction platform of this utility model. Figure 4 This is a top view of the base frame and traction platform of this utility model. Figure 5This is an enlarged cross-sectional schematic diagram of the traction frame of this utility model.

[0012] In the diagram: 1. Base frame; 2. First bolt; 3. Mounting bracket; 4. Electric telescopic cylinder; 5. Second bolt; 6. Traction platform; 7. Guide tube; 8. Inner rod; 9. Fixing plate; 10. Third bolt; 11. Traction frame; 12. Threaded rod; 13. Fourth bolt; 14. Limiting frame; 15. Roller; 16. Fixing frame; 17. Rack; 18. Pushing frame; 19. Limiting strip; 20. Pushing disc; 21. Servo motor. Detailed Implementation

[0013] 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.

[0014] Please see Figures 1-5 The present invention provides the following technical solution: a mandrel stabilizing pushing device, including a base frame 1, an elongated groove on the surface of the base frame 1 is threadedly connected to a mounting frame 3 by a first bolt 2, the bottom surface of a fixing frame 16 is fixedly connected to the surface of the base frame 1, a rack 17 is connected to the top surface of the fixing frame 16, the top surface of the rack 17 is meshed with a gear surface mounted on the surface of a pushing frame 18, the surface of the pushing frame 18 is slidably connected to the surface of a limiting strip 19, the bottom of the limiting strip 19 is connected to the top surface of the fixing frame 16, a pushing disc 20 is connected to the bottom surface of the pushing frame 18, and a servo motor 21 is mounted on the surface of the pushing frame 18; An electric telescopic cylinder 4 is installed on the top horizontal end surface of the mounting frame 3. The top disc surface of the electric telescopic cylinder 4 is threadedly connected to the surface of the traction platform 6 using a second bolt 5. A guide tube 7 is welded to the bottom surface of the traction platform 6. An inner rod 8 is slidably sleeved on the inner wall surface of the guide tube 7. The bottom surface of the inner rod 8 is welded to the top of the mounting frame 3. The top surface of the traction platform 6 abuts against a fixing plate 9. The top surface of the fixing plate 9 is threadedly connected to the top of the traction platform 6 using a third bolt 10. The top surface of the traction platform 6 abuts against a traction frame 11. A threaded rod 12 is rotatably sleeved on the surface of the traction frame 11. The surface of the threaded rod 12 is threadedly connected to the surface of the fixing plate 9. A limiting frame 14 is threadedly connected to the inclined end of the surface of the traction frame 11 using a fourth bolt 13. The surface of the limiting frame 14 is sleeved on the shaft surface of the roller 15.

[0015] Preferably, two sets of electric telescopic cylinders 4, the second bolt 5, the guide tube 7 and the inner rod 8 are symmetrically distributed at both ends of the traction table 6.

[0016] In actual use, the switch of the electric telescopic cylinder 4 is turned on, and the operating parameters of the two sets of electric telescopic cylinders 4 are set through the controller, so that the two electric telescopic cylinders 4 extend upward at the same time.

[0017] Preferably, the surface of the fixing plate 9 is provided with a threaded through groove, the shape and size of which are adapted to the threaded rod 12.

[0018] In practical use, the distance between the two cross-shaped traction frames 11 is adjusted by rotating the threaded rod 12 threaded to the fixed plate 9. The traction frame 11 is threaded to both sides of the threaded rod 12. When the threaded rod 12 threaded to the outside is loosened in the forward direction, the threaded rod 12 threaded to the other side of the traction frame 11 is simultaneously rotated in the reverse direction to adjust the position of one traction frame 11 on the top of the traction platform 6. After that, the above operation is repeated to adjust the position of the other traction frame 11 on the top of the traction platform 6 in the same way.

[0019] Preferably, the traction frame 11 is a triangular integral structure with a set of circular grooves symmetrically distributed at its bottom, and the shape and size of the circular grooves are adapted to the disc at one end of the threaded rod 12.

[0020] In practical use, the circular grooves on both sides of the traction frame 11 allow the threaded rod 12 to rotate within the circular grooves on the surface of the fixed plate 9 when it rotates on the surface of the fixed plate 9.

[0021] Preferably, the limiting frame 14 is an L-shaped integrated structure with a semi-circular through groove on its surface, and the semi-circular through groove is adapted to the shaft of the roller 15. The two limiting frames 14 are symmetrically distributed on the surface of the traction frame 11.

[0022] In practical use, the semi-circular through grooves of the two limiting frames 14 are used to abut together to fix the position of the roller 15 on the traction frame 11.

[0023] Preferably, a circular threaded groove is longitudinally formed on the transverse end surface of the traction frame 11, the shape and size of which are adapted to the fourth bolt 13.

[0024] In practical use, during processing, the fourth bolt 13 can be rotated counterclockwise to loosen the connection between the threaded part of the traction table 6 and the traction frame 11. Then, the threaded rods 12 that are rotatably connected on both sides of the traction frame 11 can be grasped respectively. By rotating the threaded rods 12 that are threadedly connected to the fixed plate 9, the distance between the two cross-set traction frames 11 can be adjusted.

[0025] Working principle: During plastic extrusion processing, the fixed frame 16 is installed on the mandrel processing production line. Then, the switch of the electric telescopic cylinder 4 is started using the external control panel and controller. The operating parameters of the two sets of electric telescopic cylinders 4 are set by the controller, so that the two electric telescopic cylinders 4 extend upward at the same time. When the electric telescopic cylinder 4 extends upward, it drives the threaded traction table 6 to move upward together until the traction frame 11 installed on the top of the traction table 6 is parallel to the extrusion port of the mandrel production line, which facilitates the stable conveying of the extruded mandrel on the roller 15 on the traction frame 11. Meanwhile, during processing, the fourth bolt 13 can be rotated counterclockwise to loosen the connection between the threaded connection between the traction table 6 and the traction frame 11. Then, the threaded rods 12 connected to both sides of the traction frame 11 can be grasped respectively. By rotating the threaded rods 12 connected to the fixed plate 9, the distance between the two cross-set traction frames 11 can be adjusted to adapt to the traction requirements of plastic products of different diameters. After the adjustment is completed, the fourth bolt 13 is rotated clockwise again so that the fourth bolt 13 clamps the adjusted position of the traction frame 11 on the traction table 6. In addition, after adjusting the spacing of the two sets of cross-distributed traction frames 11 as described above, the electric telescopic cylinder 4 is activated again through the external control panel to adjust the deviation between the height of the traction mandrel and the height of the plastic extrusion production line after the spacing of the traction frame 11 is adjusted. After the adjustment is completed, the servo motor 21 is activated through the external control panel. When the servo motor 21 rotates, it drives the gear installed inside the push frame 18 and connected to the output end of the servo motor 21 to rotate. When the gear installed at the bottom of the push frame 18 rotates, it moves on the top of the fixed frame 16 through the meshing rack 17. When the push frame 18 moves on the top of the fixed frame 16, it slides on the top of the limit bar 19, thereby guiding and limiting the movement of the push frame 18. At this time, the push disc 20 pushes and feeds the mandrel placed between the rollers 15 to form the material. In this design, the servo motor 21 is the Yaskawa SGMJV-04ADA6E motor from the existing equipment. It has precise forward and reverse rotation control capabilities, fast response speed, and can stably assist in the molding of plastic products by pushing the mandrel.

[0026] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mandrel stabilizing and pushing device, comprising a base frame (1), characterized in that: The base frame (1) has an elongated groove on its surface, which is threaded to the mounting bracket (3) by the first bolt (2). The base frame (1) has a fixed connection to the bottom surface of the fixing bracket (16). The top surface of the fixing bracket (16) is connected to the rack (17). The top surface of the rack (17) is meshed with the gear surface mounted on the surface of the pusher frame (18). The surface of the pusher frame (18) is slidably connected to the surface of the limiting strip (19). The bottom of the limiting strip (19) is connected to the top surface of the fixing frame (16). The bottom surface of the pusher frame (18) is connected to the pusher disc (20). The surface of the pusher frame (18) is mounted with a servo motor (21). An electric telescopic cylinder (4) is installed on the top horizontal end surface of the mounting frame (3). The top disc surface of the electric telescopic cylinder (4) is threadedly connected to the surface of the traction platform (6) by a second bolt (5). A guide tube (7) is welded to the bottom surface of the traction platform (6). An inner rod (8) is slidably sleeved on the inner wall surface of the guide tube (7). The bottom surface of the inner rod (8) is welded to the top of the mounting frame (3). The top surface of the traction platform (6) abuts against a fixing plate (9). The top surface of the fixing plate (9) is threadedly connected to the top of the traction platform (6) by a third bolt (10). The top surface of the traction platform (6) abuts against a traction frame (11). A threaded rod (12) is rotatably sleeved on the surface of the traction frame (11). The surface of the threaded rod (12) is threadedly connected to the surface of the fixing plate (9). The inclined end of the surface of the traction frame (11) is threadedly connected to a limiting frame (14) by a fourth bolt (13). The surface of the limiting frame (14) is sleeved on the shaft surface of the roller (15).

2. The mandrel stabilizing and pushing device according to claim 1, characterized in that: The two sets of electric telescopic cylinders (4), second bolts (5), guide tubes (7) and inner rods (8) are symmetrically distributed at both ends of the traction table (6).

3. The mandrel stabilizing and pushing device according to claim 1, characterized in that: The surface of the fixing plate (9) has a threaded groove, the shape and size of which are adapted to the threaded rod (12).

4. The mandrel stabilizing and pushing device according to claim 3, characterized in that: The traction frame (11) is a triangular integrated structure with a set of circular grooves symmetrically distributed at its bottom, and the shape and size of the circular grooves are adapted to the disc at one end of the threaded rod (12).

5. The mandrel stabilizing and pushing device according to claim 1, characterized in that: The limiting frame (14) is an "L" shaped integrated structure with a semi-circular through groove on its surface. The semi-circular through groove is adapted to the shaft of the roller (15). The two limiting frames (14) are symmetrically distributed on the surface of the traction frame (11).

6. The mandrel stabilizing and pushing device according to claim 4, characterized in that: The traction frame (11) has a circular threaded groove longitudinally opened on the transverse end surface, and its shape and size are adapted to the fourth bolt (13).

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