Hydraulic pull-out screw device of extruder

Abstract

The utility model discloses a hydraulic pull-out screw device of an extruder, which belongs to the technical field of extruders and comprises an extruder body and a base mounted on the side surface of the extruder body, a U-shaped adjusting frame is mounted at the top end of an adjusting component, and two hydraulic rods for realizing a hydraulic pull-out effect are mounted on the side surface of the adjusting frame. The driving end of the hydraulic rod penetrates through the adjusting frame to be connected with a rectangular mounting box, a through-type through hole is formed in the vertical side face of the adjusting frame, a second lead screw is mounted on the inner side of the mounting box, and a stepping motor for providing adjusting power for the second lead screw is mounted on the side face of the mounting box; the periphery of the second lead screw is in threaded connection with two adjusting blocks connected with the inner wall of the mounting box, the bottom ends of the adjusting blocks are connected with adjusting plates, and the side faces of the adjusting plates are slidably connected with limiting grooves formed in the bottom end of the mounting box. According to the hydraulic screw pulling-out device of the extruder, the screw can be fixed conveniently and easily, and time and labor are saved during mounting and dismounting of the screw.

Description

Technical Field

[0001] The utility model belongs to the technical field of extruders, in particular to a hydraulic screw pulling device for an extruder. Background Art

[0002] An extruder is one of the types of plastic machinery. Its main machine is an extruder, which is composed of an extrusion system, a transmission system and a heating and cooling system. The extrusion system includes a screw extrusion barrel, a hopper head and a mold. During the use of the extruder, it is often necessary to pull the screw out of the extruder, clean it and then reassemble it. The general method of disassembling the screw is to use manpower to pull it out of the extruder. The existing extruder uses hydraulic means instead of manual labor to pull out the screw, thereby greatly saving the work intensity of the staff and making it more labor-saving. Although it can save a certain amount of manpower to a certain extent, the device fixes the screw to be pulled out by a fixing plate with bolts, making the installation and removal of the screw more time-consuming and labor-intensive.

[0003] After searching, the Chinese patent document (authorization announcement number CN220638822U) shows a hydraulic screw pulling device for an extruder, which includes a mounting seat, a hydraulic cylinder, a top plate, a connecting rod and a fixed plate. The mounting seat is detachably arranged on the extruder cavity, the hydraulic cylinder is arranged on the outside of the mounting seat, the top plate is arranged on the piston rod of the hydraulic cylinder, the connecting rod is arranged between the top plate and the fixed plate, one end of the connecting rod is connected to the top plate, the fixed plate is connected to the other end of the connecting rod, and the screw of the extruder and the fixed plate are detachably connected. The utility model pushes the top plate outward under the ejection force of the hydraulic piston rod, and then the connecting rod drives the fixed plate to move outward, thereby pulling out the extruder screw, solving the problem of excessive initial force when pulling out the extruder screw, and avoiding the problem of wasting manpower. Although the patent can save a certain amount of manpower to a certain extent, the device fixes the screw to be pulled out by the fixed plate in conjunction with the bolt, making the installation and disassembly of the screw more time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to provide a hydraulic screw pulling device for an extruder to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extruder hydraulic pulling-out screw device, comprising an extruder body and a base installed on the side of the extruder body, an adjusting component for auxiliary adjustment is installed on the inner side of the base, a U-shaped adjusting frame is installed on the top of the adjusting component, and two hydraulic rods for realizing the hydraulic pulling-out effect are installed on the side of the adjusting frame, and the driving end of the hydraulic rod passes through the adjusting frame and is connected to a rectangular mounting box, and a through-type through hole is installed on the vertical side of the adjusting frame, a second screw rod is installed on the inner side of the mounting box, and a stepping motor for providing adjustment power for the second screw rod is installed on the side of the mounting box, the outer peripheral thread of the second screw rod is connected to two adjusting blocks connected to the inner wall of the mounting box, the bottom end of the adjusting block is connected to an adjusting plate, the side of the adjusting plate is slidably connected to the limiting groove arranged at the bottom end of the mounting box, and a fixing plate for fixing the screw is welded to one end of the adjusting plate located on the outside of the mounting box.

[0006] Preferably, a plurality of casters with foot brakes are installed at the bottom end of the base.

[0007] Preferably, the adjustment assembly includes two first screw rods installed on the inner side of the base and a drive motor installed on the side of the base to provide adjustment power for the first screw rods.

[0008] Preferably, auxiliary wheels are installed at the midpoints of the two first screw rods, and the two auxiliary wheels are connected by belt transmission.

[0009] Preferably, the outer periphery of the first screw rod is threadedly connected to two linkage blocks connected to the inner bottom wall of the base, and the top end of the linkage block is connected to a movable rod via a hinge.

[0010] Preferably, one end of the movable rod passes through an adjustment slot arranged at the top of the base and is connected to a base, and the top of the base is connected and fixed to the adjustment frame.

[0011] Preferably, a plurality of suction cups connected to the extruder body are installed on the side of the base.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0013] The hydraulic screw pulling device for the extruder benefits from the design of the stepper motor and the hydraulic rod. By starting the stepper motor, the second screw is driven to rotate. The rotation of the second screw drives the adjusting plates at the bottom ends of the two adjusting blocks to adjust. The adjustment of the two adjusting plates can drive the fixing plates to fix the screw, making the installation and removal of the screw by the device more time-saving and labor-saving. The installation box is driven to move horizontally by starting the hydraulic rod, so that the screw is pulled out mechanically instead of manually, which greatly saves the work intensity of the staff.

[0014] Thanks to the design of the adjustment component and the casters, the height of the adjustment frame can be adjusted by designing the adjustment component, thereby expanding the application range of the device, and the design of the suction cup can ensure the stability of the base during use, and the design of the casters can facilitate the movement of the base, thereby increasing the practicality of the device.

[0015] The extruder has a hydraulic screw pull-out device, and the screw fixing operation is convenient and easy to understand, making the installation and removal of the screw less time-consuming and labor-intensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the installation box of the utility model;

[0019] Figure 3 This is a cross-sectional view of the connection of the installation box of the utility model;

[0020] Figure 4 It is a partial connection cross-sectional view of the base of the utility model.

[0021] Description of reference numerals:

[0022] In the figure: 1. Extruder body; 2. Base; 3. Adjustment assembly; 31. Drive motor; 32. First screw; 33. Auxiliary wheel; 34. Movable rod; 35. Linkage block; 36. Suction cup; 4. Caster; 5. Adjustment frame; 6. Hydraulic rod; 7. Mounting box; 8. Stepper motor; 9. Adjustment plate; 10. Fixed plate; 11. Adjustment block; 12. Second screw. DETAILED DESCRIPTION

[0023] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0024] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0025] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., which shall be based on actual needs. The technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail. However, where appropriate, the technologies, methods and equipment should be regarded as part of the specification, and the proportions of the devices in the drawings are for reference only and may be adjusted to a certain extent according to actual usage.

[0026] Examples, such as Figures 1 to 4 As shown, a U-shaped adjustment frame 5 is installed at the top of the adjustment component 3, and two hydraulic rods 6 for realizing the hydraulic pulling effect are installed on the side of the adjustment frame 5, and the driving end of the hydraulic rod 6 passes through the adjustment frame 5 and is connected to a rectangular installation box 7. The top of the adjustment frame 5 can be used for the staff to place working tools, etc., so as to increase the practicality of the device. A through-type through hole is installed on the vertical side of the adjustment frame 5, and a second screw rod 12 is installed on the inner side of the installation box 7. The second screw rod 12 is a two-stage design, which can drive the two fixing plates 10 to fix the screw rods, and A stepper motor 8 for providing adjustment power for the second screw rod 12 is installed on the side of the installation box 7. The outer peripheral thread of the second screw rod 12 is connected to two adjustment blocks 11 connected to the inner wall of the installation box 7. The bottom end of the adjustment block 11 is connected to an adjustment plate 9. The side of the adjustment plate 9 is slidably connected to the limit groove arranged at the bottom end of the installation box 7. The end of the adjustment plate 9 located on the outside of the installation box 7 is welded with a fixing plate 10 for fixing the screw. The extruder body 1 is the prior art, including a screw extrusion barrel, a feed barrel, a hopper head and a mold, and the finished product produced is a round plastic tube.

[0027] A plurality of casters 4 with foot brakes are installed at the bottom end of the base 2. The design of the casters 4 can facilitate the transportation of the device after disassembly, which is more labor-saving.

[0028] The adjusting assembly 3 includes two first screw rods 32 installed on the inner side of the base 2 and a driving motor 31 installed on the side of the base 2 to provide adjusting power for the first screw rods 32. Auxiliary wheels 33 are installed at the midpoints of the two first screw rods 32. The two auxiliary wheels 33 are connected by belt transmission. The design of the two auxiliary wheels 33 can ensure that the two first screw rods 32 rotate synchronously to a certain extent. The outer peripheral thread of the first screw rod 32 is connected to two linkage blocks 35 connected to the inner bottom wall of the base 2. The first screw rod 32 is the same as the second screw rod 12 and is a two-stage design. The top of the linkage block 35 is connected to a movable rod 34 through a hinge. One end of the movable rod 34 passes through the adjusting slot at the top of the base 2 and is connected to the base. The base is an existing mature technology and can meet the effect of hinged connection. The top of the base is connected and fixed to the adjusting frame 5. A plurality of suction cups 36 connected to the extruder body 1 are installed on the side of the base 2. The design of the suction cup 36 ensures the stability of the base 1 when it is in use.

[0029] The extruder body 1, the drive motor 31, the hydraulic rod 6 and the stepper motor 8 are all conventional instruments. The working principle, size and model are irrelevant to the function of the present application, so they are not described in detail. They are all controlled by a remote control switch. The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices. Therefore, the present invention will no longer explain the control method and circuit connection in detail, and the proportions of the drawings are for reference only and can be adjusted to a certain extent according to actual usage.

[0030] How it works

[0031] The hydraulic screw pulling device of the extruder is used. When in use, the driving motor 31 is started according to actual conditions to drive the two first screws 32 to rotate. The rotation of the first screw 32 drives the movable rod 34 at the top of the linkage block 35 to adjust, so as to adjust the use height of the adjustment frame 5. The hydraulic rod 6 is started to drive the installation box 7 to move toward the side of the extruder body 1. The stepper motor 8 is started to drive the second screw 12 to rotate. The rotation of the second screw 12 drives the adjustment plates 9 at the bottom ends of the two adjustment blocks 11 to adjust. The adjustment of the two adjustment plates 9 can drive the fixing plate 10 to fix the screw. After the fixing is completed, the hydraulic rod 6 is started to drive the installation box 7 to move horizontally to pull out the screw.

[0032] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic screw pull-out device for an extruder, comprising an extruder body (1) and a base (2) mounted on the side of the extruder body (1), wherein an adjustment component (3) for auxiliary adjustment is mounted on the inner side of the base (2), characterized in that: A U-shaped adjustment frame (5) is installed at the top of the adjustment component (3), and two hydraulic rods (6) for achieving a hydraulic pulling effect are installed on the side of the adjustment frame (5), and the driving end of the hydraulic rod (6) passes through the adjustment frame (5) and is connected to a rectangular installation box (7), and a through-type through hole is installed on the vertical side of the adjustment frame (5). A second screw rod (12) is installed on the inner side of the installation box (7), and a stepping motor (8) for providing adjustment power for the second screw rod (12) is installed on the side of the installation box (7). The outer periphery of the second screw rod (12) is threadedly connected to two adjustment blocks (11) connected to the inner wall of the installation box (7), and the bottom end of the adjustment block (11) is connected to an adjustment plate (9), and the side of the adjustment plate (9) is slidably connected to a limit groove arranged at the bottom end of the installation box (7), and a fixing plate (10) for fixing the screw rod is welded to one end of the adjustment plate (9) located outside the installation box (7).

2. The hydraulic screw pull-out device for an extruder according to claim 1, characterized in that: A plurality of casters (4) with foot brakes are installed at the bottom end of the base (2).

3. The hydraulic screw pull-out device for an extruder according to claim 1, characterized in that: The adjustment assembly (3) comprises two first screw rods (32) mounted on the inner side of the base (2) and a drive motor (31) mounted on the side of the base (2) to provide adjustment power for the first screw rods (32).

4. The hydraulic screw pull-out device for an extruder according to claim 3, characterized in that: An auxiliary wheel (33) is installed at the midpoint of each of the two first screw rods (32), and the two auxiliary wheels (33) are connected via a belt transmission.

5. The hydraulic screw pull-out device for an extruder according to claim 4, characterized in that: The outer periphery of the first screw rod (32) is threadedly connected to two linkage blocks (35) connected to the inner bottom wall of the base (2), and the top end of the linkage block (35) is connected to a movable rod (34) via a hinge.

6. The hydraulic screw pull-out device for an extruder according to claim 5, characterized in that: One end of the movable rod (34) passes through an adjustment slot arranged at the top of the base (2) and is connected to a base, and the top of the base is connected and fixed to the adjustment frame (5).

7. The hydraulic screw pull-out device for an extruder according to claim 6, characterized in that: A plurality of suction cups (36) connected to the extruder body (1) are installed on the side of the base (2).

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