A follow-up device and tube extrusion machine

Abstract

The utility model belongs to the field of tube extrusion machines, and specifically relates to a follower device and a tube extrusion machine thereof, wherein the follower device includes a linear moving mechanism and a clamping mechanism arranged on the output end of the linear moving mechanism; the moving direction of the output end of the linear moving mechanism is parallel to the direction of the tube extrusion mechanism extruding the rod-shaped workpiece; the clamping mechanism is used to clamp the rod-shaped workpiece extruded by the tube extrusion mechanism, and the linear moving mechanism is used to drive the clamping mechanism to follow the clamped rod-shaped workpiece during the continuous extrusion of the rod-shaped workpiece. The follower device provided by the utility model is applied to the tube extrusion machine, and is suitable for various extrusion conditions of vertically extruding the rod-shaped workpiece, horizontally extruding the rod-shaped workpiece, and obliquely extruding the rod-shaped workpiece. It is also suitable for use in a tube extrusion mechanism equipped with an inner liner at the extrusion port of the tube extrusion mechanism. It has strong adaptability, can greatly improve the quality of the extruded rod-shaped workpiece, and avoid bending, breaking or wrinkling of the extruded rod-shaped workpiece.

Description

Technical Field

[0001] The utility model belongs to the field of tube extrusion machines, and in particular relates to a follower device and a tube extrusion machine thereof. Background Art

[0002] Silicon carbide tube is a high-quality silicon carbide product made of silicon carbide as the main raw material and sintered at high temperature. It has high temperature strength, high temperature oxidation resistance, good wear resistance, good thermal stability, small thermal expansion coefficient, high thermal conductivity, high hardness, heat shock resistance, chemical corrosion resistance and other excellent properties.

[0003] The basic preparation process of silicon carbide tubes includes: mixing raw materials evenly to prepare slurry, extruding the slurry into a green tube, and then drying the green tube and sintering it to obtain the finished product.

[0004] Since the length of the silicon carbide green tube is several meters, whether it is extruded horizontally or vertically, it is easy to crack or wrinkle due to the friction between the silicon carbide green tube and the liner tube and the gravity during the extrusion process, resulting in a technical problem of low yield rate.

[0005] The prior art lacks a solution to solve the problem of cracking and wrinkling of silicon carbide green tubes during extrusion, so it is urgent to develop a corresponding follow-up device to solve the problems existing in the prior art. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a follower device and a tube extruder thereof, so as to solve the problems in the prior art that when the tube extrusion mechanism extrude a rod-shaped workpiece, the slurry is easy to be deformed, cracked and wrinkled.

[0007] The utility model provides a follower device, comprising a linear moving mechanism and a clamping mechanism arranged on the output end of the linear moving mechanism;

[0008] The moving direction of the output end of the linear moving mechanism is parallel to the direction in which the tube extruding mechanism extrudes the rod-shaped workpiece;

[0009] The clamping mechanism is used for clamping the rod-shaped workpiece extruded by the tube extrusion mechanism, and the linear moving mechanism is used for driving the clamping mechanism to move with the clamped rod-shaped workpiece during the continuous extrusion of the rod-shaped workpiece.

[0010] Furthermore, a speed measuring mechanism is also included, which is used to monitor the extrusion speed of the tube extrusion mechanism. The moving speed of the linear moving mechanism 1 is the same as the extrusion speed of the rod-shaped workpiece of the tube extrusion mechanism 4.

[0011] Furthermore, the speed measuring mechanism includes a rotating disk, which is arranged at the extrusion port of the tube extrusion mechanism;

[0012] When the tube extrusion mechanism extrude the rod-shaped workpiece, the rotating disk rotates by friction with the surface of the extruded rod-shaped workpiece, and the extrusion speed of the rod-shaped workpiece is calculated by acquiring the rotation speed of the rotating disk.

[0013] Furthermore, the speed measuring mechanism also includes a fixed frame, the rotating disk is arranged on the fixed frame, and the fixed frame is arranged at one end of the linear motion mechanism body.

[0014] Furthermore, the linear motion mechanism includes a base, a linear guide rail, a sliding plate and a driving member;

[0015] The linear guide rail is arranged on the base, the sliding plate is slidably arranged on the linear guide rail, and the driving member drives the sliding plate to slide on the linear guide rail.

[0016] Furthermore, the driving member includes a rack arranged on the base and a motor arranged on the sliding plate, and a gear meshing with the rack is arranged on the motor shaft.

[0017] Furthermore, the clamping mechanism includes two clamping plates and a clamping driving member for driving the two clamping plates to move closer to or away from each other.

[0018] The utility model also provides a tube extruding machine, comprising a tube extruding mechanism and the above-mentioned follower device, wherein the follower device is arranged downstream of the extrusion port of the tube extruding mechanism.

[0019] Furthermore, the tube extrusion mechanism extrude the rod-shaped workpiece vertically downward; or, the tube extrusion mechanism extrude the rod-shaped workpiece horizontally.

[0020] Furthermore, the extrusion port is connected to an inner liner tube, and the rod-shaped workpiece extruded by the tube extrusion mechanism is a hollow tube structure attached to the outer periphery of the inner liner tube.

[0021] The beneficial effect of the utility model is that the follower device provided by the utility model is applied to a tube extruder and is suitable for various extrusion conditions of vertically downward extrusion of rod-shaped workpieces, horizontally transverse extrusion of rod-shaped workpieces and inclined extrusion of rod-shaped workpieces. It is also suitable for use in a tube extrusion mechanism in which an inner liner tube is provided at the extrusion port of the tube extrusion mechanism. It has strong adaptability, can greatly improve the quality of the extruded rod-shaped workpiece, and avoid bending, breaking or wrinkling of the extruded rod-shaped workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 It is a structural schematic diagram of the follower device in the utility model;

[0023] Attached Figure 2 For attachment Figure 1 A partial enlarged view of the middle A;

[0024] Attached Figure 3 For attachment Figure 1 A partial enlarged view of point B in the middle;

[0025] Attached Figure 4 It is a top view of the follower device in the utility model;

[0026] Attached Figure 5 It is a structural schematic diagram of the tube extruder in the utility model.

[0027] In the figure, 1-linear moving mechanism; 11-base; 12-linear guide; 13-sliding plate; 131-sliding block; 14-driving member; 141-rack; 142-motor; 143-gear; 2-clamping mechanism; 21-clamping driving member; 22-clamping plate; 3-speed measuring mechanism; 31-rotating disk; 32-fixed frame; 33-rotating rod; 4-tube extrusion mechanism; 41-extrusion port; 42-liner tube; 43-liner tube fixing frame; 5-working platform. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] As attached Figure 1 -Attached Figure 5 As shown, the utility model provides a follower device, comprising a linear moving mechanism 1 and a clamping mechanism 2 arranged on the output end of the linear moving mechanism 1;

[0034] The moving direction of the output end of the linear moving mechanism 1 is parallel to the direction in which the tube extruding mechanism 4 extrudes the rod-shaped workpiece, thereby enabling the clamping mechanism 2 to move together with the extruded rod-shaped workpiece;

[0035] The clamping mechanism 2 is used to clamp the rod-shaped workpiece extruded by the tube extrusion mechanism 4, and then provide support for the rod-shaped workpiece during the extrusion process. The linear moving mechanism 1 is used to drive the clamping mechanism 2 to follow the clamped rod-shaped workpiece during the continuous extrusion of the rod-shaped workpiece, that is, the clamping mechanism 2 clamps the rod-shaped workpiece, and the two move synchronously to provide support for the rod-shaped workpiece, which can prevent the newly extruded rod-shaped workpiece from bending, breaking or wrinkling due to the action of gravity. Specifically, when the tube extrusion mechanism 4 extrude the rod-shaped workpiece vertically downward, the follower device can prevent the extruded rod-shaped workpiece from breaking or wrinkling due to the action of gravity; when the tube extrusion mechanism 4 extrude the rod-shaped workpiece horizontally or tiltedly, the follower device can prevent the extruded rod-shaped workpiece from being deformed due to the action of gravity as a cantilever structure, and can also prevent the extruded rod-shaped workpiece from breaking or wrinkling due to the action of gravity; when the extrusion port 41 of the tube extrusion mechanism 4 is equipped with an inner liner 42, the follower device can prevent the extruded rod-shaped workpiece from wrinkling due to the large friction between the extruded rod-shaped workpiece and the inner liner 42.

[0036] The follower device provided by the utility model is applied to a tube extruder and is suitable for various extrusion working conditions such as vertically downward extrusion of a rod-shaped workpiece, horizontally transverse extrusion of a rod-shaped workpiece, and inclined extrusion of a rod-shaped workpiece. It is also suitable for use in a tube extrusion mechanism 4 in which an inner liner tube 42 is provided at the extrusion port 41 of the tube extrusion mechanism 4. It has strong adaptability, can greatly improve the quality of the extruded rod-shaped workpiece, and avoid bending, breaking or wrinkling of the extruded rod-shaped workpiece.

[0037] In one of the embodiments, the follow-up device also includes a speed measuring mechanism 3, which is used to monitor the extrusion speed of the tube extrusion mechanism 4 to provide a basis for the moving speed of the linear moving mechanism 1. The moving speed of the linear moving mechanism 1 is the same as the extrusion speed of the rod-shaped workpiece of the tube extrusion mechanism 4, so that the moving speed of the output end of the linear moving mechanism 1 is synchronized with the extrusion speed of the tube extrusion mechanism 4, so that the clamping mechanism 2 and the rod-shaped workpiece move relatively statically, and the clamping mechanism 2 and the rod-shaped workpiece in the extrusion process are automatically followed, without manual intervention, thereby improving efficiency, and at the same time, relative displacement between the clamping mechanism 2 and the rod-shaped workpiece can be avoided to cause wear on the rod-shaped workpiece.

[0038] In one embodiment, the speed measuring mechanism 3 includes a rotating disk 31, and the rotating disk 31 is arranged at the extrusion port 41 of the tube extrusion mechanism 4, so that the speed of the rod-shaped workpiece can be measured when the rod-shaped workpiece is just extruded;

[0039] When the tube extrusion mechanism 4 extrude the rod-shaped workpiece, the rotating disk 31 rotates by friction with the surface of the extruded rod-shaped workpiece, and the extrusion speed of the rod-shaped workpiece is calculated by obtaining the rotation speed of the rotating disk 31. The extrusion speed of the rod-shaped workpiece can be calculated according to the circumference and rotation speed of the rotating disk 31. The extrusion speed of the rod-shaped workpiece is monitored by the rotating disk 31, which can be accurately and reliably monitored, is not easily affected by the external environment, and has a low false alarm rate.

[0040] In one embodiment, the speed measuring mechanism 3 also includes a fixed frame 32, the rotating disk 31 is arranged on the fixed frame 32, and the fixed frame 32 is arranged at one end of the body of the linear moving mechanism 1, that is, the speed measuring mechanism 3 is directly arranged on the linear moving mechanism 1, so as to ensure the integrity of the follow-up device and simplify the difficulty of setting the follow-up device on the tube extrusion machine.

[0041] In one of the embodiments, a rotating rod 33 is hingedly provided on the fixed frame 32, and the other end of the rotating rod 33 is used to rotate and fix the rotating disk 31, thereby adjusting the distance between the rotating disk 31 and the rod-shaped workpiece. Preferably, a torsion spring is provided at the hinge of the rotating rod 33, thereby driving the rotating disk 31 to always be close to the outer wall of the rod-shaped workpiece, thereby improving the detection accuracy.

[0042] The linear motion mechanism 1 can be a cylinder, a hydraulic cylinder, an electric cylinder, a linear module, etc. The linear motion mechanism 1 includes a body and an output end, the body is a fixed end, such as a cylinder body of a cylinder, a hydraulic cylinder, an electric cylinder, a base of a linear module, etc., and the output end is an output component that moves linearly on the fixed end, such as a piston of a cylinder, a hydraulic cylinder, an electric cylinder, a slide of a linear module, etc.

[0043] In a preferred embodiment, the linear motion mechanism 1 includes a base 11, a linear guide rail 12, a sliding plate 13 and a driving member 14, wherein the base 11 serves as the body of the linear motion mechanism 1, and the sliding plate 13 serves as the output end of the linear motion mechanism 1;

[0044] The linear guide 12 is arranged on the base 11, and the sliding plate 13 is slidably arranged on the linear guide 12. Preferably, two linear guides 12 are arranged parallel to each other on both sides of the base 11, and two groups of sliders 131 are correspondingly arranged on the sliding plate 13. The sliding plate 13 is slidably arranged on the linear guide 12 through the two groups of sliders 131, and the driving member 14 drives the sliding plate 13 to slide on the linear guide 12. Since the extrusion length of the rod-shaped workpiece can be as long as several meters, the moving stroke of the output end of the linear moving mechanism 1 is also as long as several meters. Through the above arrangement, the structural strength of the linear moving mechanism 1 can be improved, and the structural deformation caused by the long moving stroke of the output end of the linear moving mechanism 1 can be avoided.

[0045] The driving member 14 may be a cylinder, a hydraulic cylinder or an electric cylinder, and may also be implemented by a screw nut pair, a transmission belt, etc. In a preferred embodiment, the driving member 14 includes a rack 141 disposed on the base 11 and a motor 142 disposed on the sliding plate 13, and a gear 143 meshing with the rack 141 is disposed on the rotating shaft of the motor 142, so that the position of the sliding plate 13 can be accurately controlled.

[0046] In one embodiment, the clamping mechanism 2 includes two clamping plates 22 and a clamping driving member 21 for driving the two clamping plates 22 to move relatively closer and farther away. In a preferred embodiment, the clamping driving member 21 is a finger cylinder, and the two clamping plates 22 are arranged on two fingers of the finger cylinder.

[0047] In one embodiment, multiple groups of clamping mechanisms 2 are arranged on the linear moving mechanism 1, and the multiple groups of clamping mechanisms 2 are close to the extrusion port 41 of the tube extrusion mechanism 4 in the initial state. After the outermost clamping mechanism 2 clamps the extruded rod-shaped workpiece and moves synchronously with the rod-shaped workpiece for a set distance, the second clamping mechanism 2 clamps, and so on, and clamping and supporting can be performed at multiple axial positions on the rod-shaped workpiece at equal intervals. Multiple points on the rod-shaped workpiece are supported to further improve the forming quality of the rod-shaped workpiece.

[0048] The utility model also provides a tube extruding machine, comprising a tube extruding mechanism 4 and the above-mentioned follower device, wherein the follower device is arranged downstream of the extrusion port 41 of the tube extruding mechanism 4 and is used to drive the clamping mechanism 2 to clamp the extruded rod-shaped workpiece for synchronous movement.

[0049] In one embodiment, the tube extrusion mechanism 4 extrude the rod-shaped workpiece vertically downward, and the linear moving mechanism 1 of the follower device is also arranged vertically downward;

[0050] Alternatively, the tube extruding mechanism 4 extrude the rod-shaped workpiece horizontally and laterally, and at this time, the linear moving mechanism 1 of the follower device is also arranged horizontally and laterally.

[0051] In one embodiment, the extrusion port 41 is connected to the inner liner tube 42, and the rod-shaped workpiece extruded by the tube extrusion mechanism 4 is a hollow tube structure attached to the outer periphery of the inner liner tube 42, thereby improving the quality of the rod-shaped workpiece.

[0052] In one embodiment, the tube extrusion mechanism 4 extrude the rod-shaped workpiece vertically downward, and the tube extrusion machine also includes a working platform 5, the tube extrusion mechanism 4 is arranged above the working platform 5, the inner liner tube 42 is arranged below the working platform 5, and an inner liner tube fixing frame 43 fixed to the lower end of the inner tube 42 is also arranged at the bottom of the ground to ensure the vertical arrangement of the inner liner tube 42. In addition, the linear moving mechanism 1 in the follower device is fixed to the support foot at the lower end of the working platform 5.

[0053] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A follower device, characterized in that: It comprises a linear motion mechanism (1) and a clamping mechanism (2) arranged on the output end of the linear motion mechanism (1); The moving direction of the output end of the linear moving mechanism (1) is parallel to the direction in which the tube extruding mechanism (4) extrude the rod-shaped workpiece; The clamping mechanism (2) is used for clamping the rod-shaped workpiece extruded by the tube extrusion mechanism (4), and the linear motion mechanism (1) is used for driving the clamping mechanism (2) to move with the clamped rod-shaped workpiece during the continuous extrusion of the rod-shaped workpiece.

2. The follower device according to claim 1, characterized in that: It also comprises a speed measuring mechanism (3) for monitoring the extrusion speed of the tube extrusion mechanism (4); the moving speed of the linear moving mechanism (1) is the same as the extrusion speed of the rod-shaped workpiece of the tube extrusion mechanism (4).

3. The follower device according to claim 2, characterized in that: The speed measuring mechanism (3) comprises a rotating disk (31), and the rotating disk (31) is arranged at the extrusion port (41) of the tube extrusion mechanism (4); When the tube extrusion mechanism (4) extrude a rod-shaped workpiece, the rotating disk (31) rotates by friction with the surface of the extruded rod-shaped workpiece, and the extrusion speed of the rod-shaped workpiece is calculated by acquiring the rotation speed of the rotating disk (31).

4. The follower device according to claim 3, characterized in that: The speed measuring mechanism (3) further comprises a fixed frame (32), the rotating disk (31) is arranged on the fixed frame (32), and the fixed frame (32) is arranged at one end of the body of the linear moving mechanism (1).

5. The follower device according to any one of claims 1 to 4, characterized in that: The linear motion mechanism (1) comprises a base (11), a linear guide rail (12), a sliding plate (13) and a driving member (14); The linear guide rail (12) is arranged on the base (11), the sliding plate (13) is slidably arranged on the linear guide rail (12), and the driving member (14) drives the sliding plate (13) to slide on the linear guide rail (12).

6. The follower device according to claim 5, characterized in that: The driving member (14) comprises a rack (141) arranged on the base (11) and a motor (142) arranged on the sliding plate (13); a gear (143) meshing with the rack (141) is arranged on the rotating shaft of the motor (142).

7. The follower device according to any one of claims 1 to 4, characterized in that: The clamping mechanism (2) comprises two clamping plates (22) and a clamping driving member (21) for driving the two clamping plates (22) to move closer together or further apart.

8. A tube extruder, characterized in that: It comprises a tube extruding mechanism (4) and a follower device as claimed in any one of claims 1 to 7, wherein the follower device is arranged downstream of an extrusion port (41) of the tube extruding mechanism (4).

9. The tube extruder according to claim 8, characterized in that: The tube extrusion mechanism (4) extrudes the rod-shaped workpiece vertically downward; Alternatively, the tube extruding mechanism (4) extrude the rod-shaped workpiece horizontally and laterally.

10. The tube extruder according to claim 8, characterized in that: The extrusion port (41) is connected to an inner liner tube (42), and the rod-shaped workpiece extruded by the tube extrusion mechanism (4) is a hollow tube structure attached to the outer periphery of the inner liner tube (42).

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