Double-acting extruder die rotating device

Abstract

The present invention relates to a double-action extruder, in particular to a die rotating device of a double-action extruder, comprising: a fixed seat, the fixed seat is installed on the extruder; a lifting cylinder, the lifting cylinder is fixed on the fixed seat; a guide rod, the guide rod is movably inserted on the fixed seat and is located on both sides of the lifting cylinder; a bracket, the bracket is provided with a lifting groove, and the bracket is fixed on the lifting cylinder and the guide rod; a second cylinder, the second cylinder is installed in the lifting groove; a rotating seat, the rotating seat is installed on the second cylinder; a rotating wheel, the rotating wheel is installed on the rotating seat, and the rotating wheels are symmetrically located on both sides of the die axis. The die rotating device of the double-action extruder provided by the present invention has a simple structure, saves effort in die rotation, is safe and convenient to use.

Description

Technical Field

[0001] The invention relates to a double-action extruder, in particular to a double-action extruder die rotating device. Background Art

[0002] At present, if the reverse extruder on the market adopts the form of movable mold, its mold positioning is more difficult, and it can usually only extrude rods and pipes. Because after the mold is transported to the extrusion barrel, it is impossible to ensure that the angle of its mold cavity is correct, and manual adjustment is required. The operation is unsafe, time-consuming and labor-intensive. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a double-action extruder die rotating device which can rotate the angle of the die, is safe to operate, saves effort, and has a simple structure. The specific technical solution is as follows:

[0004] The double-acting extruder die rotating device is characterized in that it comprises: a fixed seat, which is installed on the extruder; a lifting cylinder, which is fixed on the fixed seat; a guide rod, which is movably inserted on the fixed seat and is located on both sides of the lifting cylinder; a bracket, which is provided with a lifting groove, and the bracket is fixed on the lifting cylinder and the guide rod; a second cylinder, which is installed in the lifting groove; a rotating seat, which is installed on the second cylinder; a rotating wheel, which is installed on the rotating seat, and the rotating wheel is symmetrically located on both sides of the die axis; the double-acting extruder die rotating device includes a die rotation state and a die delivery state. In the die rotation state, the second cylinder rises, the rotating wheel holds up the die, and the rotating wheel drives the die to rotate to the correct angle; in the die delivery state, the second cylinder retracts, the die is pressed on the top of the lifting groove, the lifting cylinder rises, and the die moves to the extrusion center of the extruder.

[0005] By adopting the above technical solution, a second cylinder is installed inside the bracket, the second cylinder lifts the mold, and the rotating wheel drives the mold to rotate, so that the sliding friction between the original mold and the bracket is changed into rolling friction. The mold can be rotated by just rotating the rotating wheel, which saves effort and has high safety. When the mold is rotated into place, the second cylinder retracts, the mold is pressed against the bracket again, and then the mold is raised to the extrusion center of the extruder by the lifting cylinder.

[0006] Furthermore, positioning surfaces are provided on both sides of the top of the lifting slot, and the positioning surfaces are inclined surfaces or arc surfaces.

[0007] By adopting the above technical solution, the contact area between the positioning surface and the mold can be increased to avoid crushing the mold.

[0008] Further, it further includes a detection device, which is installed on the rotating seat. A detection groove is provided on the outer circular surface of the mold, and the detection groove is located directly below the mold when the position of the mold is correct. The detection groove is used for the detection device to detect the position of the mold.

[0009] By adopting the above technical solution, the detection device emits a signal after the mold rotates to the correct position, stops the rotating wheel from rotating, so that the rotation angle of the mold is accurate, and there is no need to precisely adjust the position of the mold again later.

[0010] Further, the detection device includes: a travel switch or a linear displacement sensor.

[0011] Further, it further includes a driving device, which is connected to the rotating wheel, and the driving device is used to drive the rotating wheel to rotate; the driving device includes a hydraulic motor or an electric motor.

[0012] By adopting the above technical solution, the driving device does not require manual rotation of the rotating wheel, which is labor-saving.

[0013] Further, it further includes a positioning sleeve, which is fixed on the top of the fixed seat, and the guide rod is slidably inserted on the positioning sleeve.

[0014] By adopting the above technical solution, the positioning sleeve facilitates the support bracket and avoids the cylinder from supporting the bracket, causing damage to the cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The mold rotating device of the double-action extruder provided by the present invention has a simple structure, labor-saving mold rotation, safety, and convenient use. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the mold rotating device of the double-action extruder in the initial state;

[0018] Figure 2 is a schematic structural diagram of the mold rotating device of the double-action extruder in the mold rotating state;

[0019] Figure 3 is a schematic structural diagram of the mold rotating device of the double-action extruder after completing the mold rotation;

[0020] Figure 4 is a schematic structural diagram of the mold rotating device of the double-action extruder in the mold feeding state. Detailed Embodiments

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Embodiment 1

[0023] As Figures 1 to 4 shown, the die rotating device of a double-acting extruder is characterized by comprising: a fixed seat 1, the fixed seat 1 is installed on the extruder; a lifting cylinder 23, the lifting cylinder 23 is fixed on the fixed seat 1; a guide rod 21, the guide rod 21 is movably inserted on the fixed seat 1 and is located on both sides of the lifting cylinder 23; a bracket 3, a lifting groove 31 is provided on the bracket 3, and the bracket 3 is fixed on the lifting cylinder 23 and the guide rod 21; a second cylinder 4, the second cylinder 4 is installed in the lifting groove 31; a rotating seat 5, the rotating seat 5 is installed on the second cylinder 4; a rotating wheel 6, the rotating wheel 6 is installed on the rotating seat 5, and the rotating wheel 6 is symmetrically located on both sides of the axis of the die 9. The die rotating device of the double-acting extruder includes a die rotating state and a die feeding state. In the die rotating state, the second cylinder 4 rises, the rotating wheel 6 supports the die 9, and the rotating wheel 6 drives the die 9 to rotate to the correct angle. In the die feeding state, the second cylinder 4 retracts, the die 9 presses on the top of the lifting groove 31, and the lifting cylinder 23 rises, and the die 9 moves to the extrusion center of the extruder.

[0024] The second cylinder 4 is installed inside the bracket 3. The second cylinder 4 jacks up the die 9, and the rotating wheel 6 drives the die 9 to rotate, changing the sliding friction between the original die 9 and the bracket 3 into rolling friction. Only by rotating the rotating wheel 6 can the rotation of the die 9 be realized. The rotation is labor-saving and has high safety. When the die 9 rotates in place, the second cylinder 4 retracts, the die 9 is pressed tightly on the bracket 3 again, and then the die 9 is raised to the extrusion center of the extruder by the lifting cylinder 23.

[0025] In at least one embodiment, it further includes a positioning sleeve 22. The positioning sleeve 22 is fixed on the top of the fixed seat 1, and the guide rod 21 is slidably inserted on the positioning sleeve 22.

[0026] The positioning sleeve 22 facilitates the support of the bracket 3 and avoids the lifting cylinder 23 supporting the bracket 3, resulting in damage to the cylinder.

[0027] A linear bearing is installed on the positioning sleeve 22, and the guide rod 21 is slidably inserted into the linear bearing.

[0028] Embodiment 2

[0029] On the basis of the above Embodiment 1, positioning surfaces 32 are provided on both sides of the top of the lifting groove 31. The positioning surfaces 32 are inclined surfaces or arc surfaces. The die 9 is pressed tightly on the positioning surfaces 32, and the positioning surfaces 32 can increase the contact area with the die 9 and avoid damaging the die 9.

[0030] Embodiment 3

[0031] On the basis of any of the above embodiments, it further includes a detection device 7. The detection device 7 is installed on the rotating seat 5. A detection groove is provided on the outer circumferential surface of the mold 9. The detection groove is arranged directly below the mold 9 when it is in the correct position. The detection groove is used for the detection device 7 to detect the position of the mold 9. When the cavity of the mold 9 is in the horizontal position, the detection groove is located directly below the axis of the mold 9.

[0032] After the cavity of the mold 9 rotates to the horizontal position, the detection device 7 can detect the detection groove, thereby sending out a signal to stop rotating the rotating wheel 6, making the rotation angle of the mold 9 accurate, and there is no need to precisely adjust the position of the mold 9 again later.

[0033] In not less than one embodiment, the detection device 7 includes: a travel switch or a linear displacement sensor. When the detection groove rotates above the travel switch and the linear displacement sensor, the pressing rod of the travel switch and the detection rod of the linear displacement sensor are inserted into the detection groove, the position changes, and a signal is generated.

[0034] Embodiment Four

[0035] On the basis of any of the above embodiments, it further includes a driving device. The driving device is connected to the rotating wheel 6 and is used to drive the rotating wheel 6 to rotate; the driving device includes a hydraulic motor or an electric motor.

[0036] The driving device is connected to the two rotating wheels 6 through a synchronous belt or gears to realize the rotation of the rotating wheels 6.

[0037] The driving device eliminates the need for manual rotation of the rotating wheel 6, which is labor-saving.

[0038] In not less than one embodiment, the driving device can be linked with the detection device 7. When the detection device 7 detects the detection groove, the driving state stops driving the rotating wheel.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The mold rotating device of the double-acting extruder provided by the present invention has a simple structure, the mold 9 rotates labor-savingly, safely, and is convenient to use.

[0041] 1. It can automatically find the horizontal position of the cavity of the mold 9, so that it enters the extrusion cylinder at an accurate angle for extrusion, in order to extrude special-shaped profiles with strict requirements for the placement angle of the mold 9 other than round bars and round tubes.

[0042] 2. All devices are integrated on the extruder main body, and a set of switching actions are all completed online. The structure is simple and it is convenient to use.

[0043] 3. Ensure that the mold 9 reaches the extrusion barrel in the shortest time for heat preservation extrusion, so that the mold 9 can maintain accurate temperature and stable expansion. The outer circle of the mold 9 can accurately match the inner hole of the extrusion barrel to complete the extrusion.

[0044] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. Double-action extruder die rotating device, characterized in that Comprising: A fixed seat which is installed on an extruder; A lifting cylinder which is fixed on the fixed seat; Guide rods which are movably inserted on the fixed seat and are located on both sides of the lifting cylinder; A bracket which is provided with a lifting groove and is fixed on the lifting cylinder and the guide rods; A second cylinder which is installed in the lifting groove; A rotating seat which is installed on the second cylinder; Rotating wheels which are installed on the rotating seat and are symmetrically located on both sides of the axis of the mold; The double-acting extrusion machine mold rotating device includes a mold rotating state and a mold feeding state. In the mold rotating state, the second cylinder rises, the rotating wheels lift the mold, and the rotating wheels drive the mold to rotate to the correct angle. In the mold feeding state, the second cylinder retracts, the mold presses on the top of the lifting groove, and the lifting cylinder rises, and the mold moves to the extrusion center of the extruder; Both sides of the top of the lifting groove are provided with positioning surfaces, and the positioning surfaces are inclined surfaces or arc surfaces; It further includes a detection device which is installed on the rotating seat. A detection groove is provided on the outer circumferential surface of the mold, and the detection groove is arranged directly below the mold when the mold is in the correct position. The detection groove is used for the detection device to detect the position of the mold; The detection device includes: a travel switch or a linear displacement sensor.

2. The double-acting extrusion machine mold rotating device according to claim 1, characterized in that It further includes a driving device which is connected to the rotating wheels and is used to drive the rotating wheels to rotate; the driving device includes a hydraulic motor or an electric motor.

3. The double-acting extrusion machine mold rotating device according to claim 1, characterized in that It further includes a positioning sleeve which is fixed on the top of the fixed seat, and the guide rods are slidably inserted on the positioning sleeve.

Images