A split movable beam structure with automatic rotation and positioning of punching needles

Abstract

The present invention provides a split movable beam structure with automatic rotation and positioning of a piercing needle, comprising a front movable beam, a piercing needle, a rear movable beam, a piercing needle rotating device, a piercing needle needle seat and a driving and detecting device, wherein the rear end of the front movable beam is connected to the front end of the rear movable beam, and a countersunk hole is provided at the center position of the front end of the rear movable beam, and the piercing needle rotating device is arranged in the countersunk hole; the center positions of the front movable beam and the rear movable beam are respectively penetrated with a first through hole and a second through hole along the axial direction, the first through hole is connected with the second through hole, the piercing needle is installed on the piercing needle needle seat through the first through hole, the piercing needle needle seat is inserted into the second through hole and is connected to the piercing needle rotating device; a third through hole is provided on the side of the rear movable beam, and the driving and detecting device is connected to the piercing needle rotating device through the third through hole. The present invention adopts a front and rear split movable beam structure, which is easy to manufacture, has uniform and reliable force, and can automatically and accurately realize the rotation positioning of the piercing needle during the axial movement.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, relates to extrusion production and processing equipment technology, and specifically relates to a split movable beam structure with automatic rotation and positioning of a piercing needle. Background Art

[0002] The horizontal double-acting extruder with a perforation system can produce a variety of products. It can not only extrude bars, but also seamless pipes and various types of profiles. Its products have a wide range of market applications. At present, there are three main types of perforation systems for horizontal double-acting extruders, namely built-in, rear-mounted and side-mounted perforation systems. The rear-mounted and side-mounted perforation system extruders need to be independently equipped with a perforating needle drive cylinder. The moving stroke of the main plunger is not utilized, and its cylinder body and piston rod will be greatly lengthened, which increases the processing difficulty and production cost, and leads to an increase in the total installed length of the extruder. Compared with the first two types, the built-in perforation system extruder has a shorter overall length, and its moving beam usually adopts a single moving beam window-type structure with a built-in perforated small moving beam. In this case, firstly, the moving beam itself is too long and has a complex structure, and the span of the opened window is large, which increases the difficulty of processing and greatly weakens the structural strength; secondly, the built-in small perforating moving beam slides along the guide plate throughout its entire stroke, the guiding distance is long, and the guiding accuracy is difficult to control; thirdly, the perforating needle rotation mechanism is not an independent integral structure, which is difficult to inspect and disassemble, and is fixed and moved with the needle seat. The perforating needle cannot achieve automatic rotation and positioning at any time when moving axially, and it is especially difficult to complete the extrusion of variable-section profiles. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of the single moving beam of the built-in perforating system extruder being too long, having a complex structure, being inconvenient to inspect and maintain, and the perforating needle being unable to rotate at any time during axial movement. A split moving beam structure with automatic rotation and positioning of the perforating needle is specially provided.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A split movable beam structure with automatic rotation and positioning of a piercing needle comprises a front movable beam, a piercing needle, a rear movable beam, a piercing needle rotating device, a piercing needle needle seat and a driving and detecting device, wherein the rear end of the front movable beam is connected to the front end of the rear movable beam, a countersunk hole is provided at the center position of the front end of the rear movable beam, the piercing needle rotating device is arranged in the countersunk hole, a first through hole and a second through hole are respectively penetrated in the axial direction at the center position of the front movable beam and the rear movable beam, the first through hole is connected to the second through hole, the piercing needle is installed on the piercing needle needle seat through the first through hole, the piercing needle needle seat is inserted into the second through hole and is connected to the piercing needle rotating device; a third through hole is provided on the side of the rear movable beam, and the driving and detecting device is connected to the piercing needle rotating device through the third through hole.

[0006] Furthermore, the piercing needle rotating device includes a front end cover, a rolling bearing, a worm, a worm wheel, a rear end cover and a cylinder. The worm wheel is installed inside the cylinder through a rolling bearing and can rotate freely inside the cylinder. The front end cover and the rear end cover are respectively installed on both sides of the cylinder and axially press the outer end face of the rolling bearing. A through groove is opened at the center surface of the top of the cylinder in a direction perpendicular to the axial direction, and the worm passes through the through groove and engages with the worm wheel.

[0007] Furthermore, the center plane of the worm wheel coincides with the center plane of the cylinder in the axial direction.

[0008] Furthermore, the outer circles on both sides of the worm gear teeth match with the inner circle of the rolling bearing, and the inner circle of the cylinder matches with the outer circle of the rolling bearing.

[0009] Furthermore, the driving and detecting device includes a driven shaft, a transmission shaft, a motor reducer and a rotary encoder. A third through hole is opened on both side surfaces of the rear moving beam along the central axis of the worm. One end of the transmission shaft and the driven shaft are respectively inserted into the third through hole and are respectively connected to the two ends of the worm. The other end of the transmission shaft is connected to one end of the motor reducer, and the other end of the motor reducer is connected to the rotary encoder.

[0010] Furthermore, the transmission shaft and the driven shaft are respectively supported and positioned in the rear moving beam through copper sleeves.

[0011] Furthermore, the front end of the front moving beam is connected to an extrusion rod of an extruder, the rear end of the front moving beam is connected to the front end of the rear moving beam by bolts, and the rear end of the rear moving beam is connected to a main plunger of the extruder.

[0012] Furthermore, a U-shaped manhole is opened on one side of the rear end of the front moving beam.

[0013] Furthermore, the split moving beam structure also includes an electrical control system, and the electrical control system is electrically connected to the motor reducer.

[0014] Furthermore, the rotary encoder is connected to the electrical control system signal.

[0015] The beneficial effects of the present invention are as follows: the movable beam adopts a split structure assembled by a front movable beam and a rear movable beam, the front movable beam is provided with a U-shaped manhole, and a countersunk hole for installing a piercing needle rotating device is reserved on the rear movable beam, the characteristics of the front and rear movable beams are symmetrically distributed, and the structure is evenly and reliably stressed. As a compact integral component, the piercing needle rotating device can be installed in the countersunk hole of the rear movable beam at one time, and can be inspected, maintained and disassembled through the U-shaped manhole of the front movable beam. Compared with a single movable beam structure, it is not necessary to disengage the movable beam from the main plunger and then disassemble the needle rotating components one by one, which greatly saves manpower and production time. The piercing needle rotating device adopts a worm gear mechanism with good structural reliability. It is fixed in the moving beam, and the piercing needle can be rotated and positioned at any time when the piercing needle moves axially. It is driven by a motor reducer with a rotary encoder to achieve closed-loop precise control of the piercing needle rotation speed and angle, with a high degree of automation. At the same time, it can support and guide the piercing needle seat. Compared with the single moving beam window type structure, there is no need to add independent guiding and centering adjustment devices, and the moving beam structure can be simplified, which is convenient for production and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with specific embodiments:

[0017] Figure 1 It is a schematic structural diagram of a split movable beam with automatic rotation and positioning of a punching needle according to the present invention;

[0018] Figure 2 Shown Figure 1 AA section view;

[0019] Figure 3 Shown Figure 1 BB cross-sectional view.

[0020] Description of Reference Numerals

[0021] 1. Front moving beam; 2. Punching needle; 3. Rear moving beam; 4. Punching needle rotating device; 41. Front end cover; 42. Rolling bearing; 43. Worm; 44. Worm gear; 45. Rear end cover; 46. Cylinder; 5. Punching needle seat; 6. Driving and detecting device; 6.1. Driven shaft; 6.2. Transmission shaft; 6.3. Motor reducer; 6.4. Rotary encoder. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "axial", "front", "rear", "inside", "outside", etc. are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or part referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The present invention will be further described below in conjunction with specific embodiments.

[0025] Example 1

[0026] like Figure 1 , Figure 2 As shown, a split movable beam structure with automatic rotation and positioning of a piercing needle comprises a front movable beam 1, a piercing needle 2, a rear movable beam 3, a piercing needle rotating device 4, a piercing needle needle seat 5 and a driving and detecting device 6, wherein the rear end of the front movable beam 1 is connected to the front end of the rear movable beam 3, a countersunk hole is opened at the center position of the front end of the rear movable beam 3, and the piercing needle rotating device 4 is arranged in the countersunk hole, and the center positions of the front movable beam 1 and the rear movable beam 3 are respectively penetrated by a first through hole and a second through hole in the axial direction, the first through hole is connected with the second through hole, the piercing needle 2 is installed on the piercing needle needle seat 5 through the first through hole, the piercing needle needle seat 5 is penetrated into the second through hole, and is connected to the piercing needle rotating device 4; a third through hole is opened on the side of the rear movable beam 3, and the driving and detecting device 6 is connected to the piercing needle rotating device 4 through the third through hole.

[0027] The split movable beam structure described in the present invention can automatically and accurately realize the rotational positioning of the piercing needle during axial movement; the movable beam adopts a front and rear split structure, which is easy to manufacture and has uniform and reliable force; the piercing needle rotating device is an integral component with a compact structure and is easy to inspect, maintain and disassemble.

[0028] Example 2

[0029] On the basis of Example 1, further, the perforating needle rotating device 4 includes a front end cover 4.1, a rolling bearing 4.2, a worm 4.3, a worm wheel 4.4, a rear end cover 4.5 and a cylinder 4.6. The worm wheel 4.4 is installed inside the cylinder 4.6 through the rolling bearing 4.2 and can rotate freely inside the cylinder 4.6. The front end cover 4.1 and the rear end cover 4.5 are respectively installed on both sides of the cylinder 4.6 and axially press the outer end face of the rolling bearing 4.2. A through groove is opened at the top center plane of the cylinder 4.6 in a direction perpendicular to the axial direction, and the worm 4.3 passes through the through groove and engages with the worm wheel 4.4.

[0030] Furthermore, the center plane of the worm wheel 4.4 coincides with the center plane of the cylinder 4.6 in the axial direction; the outer circles on both sides of the gear teeth of the worm wheel 4.4 match with the inner circle of the rolling bearing 4.2, and the inner circle of the cylinder 4.6 matches with the outer circle of the rolling bearing 4.2.

[0031] Furthermore, a U-shaped manhole is opened at the rear end of the front moving beam 1, which serves as a window for inspection, maintenance and disassembly of the piercing needle rotating device.

[0032] The piercing needle rotating device 4 adopts a worm gear mechanism with good structural reliability. It is fixed in the moving beam, and the piercing needle can be rotated and positioned at any time when the piercing needle moves axially. The piercing needle rotating device 4 also plays a role in supporting and guiding the piercing needle seat. Compared with the single moving beam window-type structure, there is no need to add independent guiding and centering adjustment devices, and the moving beam structure can be simplified, which is convenient to manufacture and reduces costs. In addition, as a compact integral component, the piercing needle rotating device 4 can be installed in the countersunk hole of the rear moving beam at one time, and can be inspected, maintained and disassembled through the U-shaped manhole of the front moving beam. There is no need to disengage the moving beam from the main plunger and disassemble the needle rotating components one by one, which greatly saves manpower and production time.

[0033] Example 3

[0034] Based on the above embodiments, Figure 3 As shown, further, the driving and detecting device 6 comprises a driven shaft 6.1, a transmission shaft 6.2, a motor reducer 6.3 and a rotary encoder 6.4. A third through hole is opened on both sides of the rear moving beam 3 along the central axis of the worm 4.3. One end of the transmission shaft 6.2 and the driven shaft 6.1 are respectively inserted into the third through hole and connected to the two ends of the worm 4.3. The other end of the transmission shaft 6.2 is connected to one end of the motor reducer 6.3 to support the worm and transmit power. The other end of the motor reducer 6.3 is connected to the rotary encoder 6.4. The motor reducer 6.3 is used to drive the worm and worm wheel to rotate, thereby driving the piercing needle seat 5 and the piercing needle 2 to rotate. A rotary encoder is installed at the rear of the motor reducer to detect the rotation speed and angle of the piercing needle in real time.

[0035] Furthermore, the transmission shaft 6.2 and the driven shaft 6.1 are respectively supported and positioned in the rear moving beam 3 through copper sleeves.

[0036] The invention is driven by a motor reducer with a rotary encoder 6.4, and can realize closed-loop precise control of the rotation speed and angle of the punching needle, with a high degree of automation.

[0037] Example 4

[0038] On the basis of the above embodiment, further, the split moving beam structure also includes an electrical control system, which is electrically connected to the motor reducer 6.3 respectively; the rotary encoder 6.4 is signal-connected to the electrical control system.

[0039] The electrical control system is prior art and will not be described in detail here.

[0040] The piercing needle rotating device 4 is installed in the front end countersunk hole of the rear moving beam 4 as an integral structure; the piercing needle rotating device 4 mainly includes a front end cover 4.1, a rolling bearing 4.2, a worm 4.3, a worm wheel 4.4, a rear end cover 4.5 and a cylinder 4.6. The worm wheel 4.4 is installed inside the cylinder 4.6 by means of the rolling bearing 4.2, and its center plane coincides with the center plane of the cylinder 4.6 in the axial direction. The outer circles on both sides of the gear teeth of the worm wheel 4.4 match with the inner circle of the rolling bearing 4.2, and the inner circle of the cylinder 4.6 matches with the outer circle of the rolling bearing 4.2. The front end cover 4.1 and the rear end cover 4.2 are respectively installed on both sides of the cylinder 4.6, and axially press the outer end face of the rolling bearing 4.2 to realize the axial fixation of the worm wheel 4.4; a through groove is opened at the top center plane of the cylinder 4.6 in a direction perpendicular to the axial direction, and the worm 4.3 passes through the through groove and meshes with the worm wheel 4.4.

[0041] The driving and detecting device 6 mainly includes a driven shaft 6.1, a transmission shaft 6.2, a motor reducer 6.3 and a rotary encoder 6.4; a third through hole is opened on both sides of the rear moving beam 3 along the central axis of the worm 4.3; the transmission shaft 6.2 and the driven shaft 6.1 are respectively inserted into the third through hole, and are supported and positioned in the rear moving beam by a copper sleeve, and can rotate freely; one end of the transmission shaft 6.2 and the driven shaft 6.1 are respectively connected to the two ends of the worm 4.3, which play the role of supporting the worm and transmitting power, and the other end of the transmission shaft 6.2 and the driven shaft 6.1 extends out of the side of the rear moving beam 3, and the former is connected to the output shaft of the motor reducer 6.3. The rotary encoder 6.4 is installed on the extended shaft at the rear of the motor reducer 6.3. The rear end of the piercing needle seat 5 is connected to the piercing piston rod, and the front end is inserted into the second through hole and matched with the inner hole of the worm wheel 4.4 of the piercing needle rotating device 4, and its matching cross section is square, so that the piercing needle seat 5 can be driven to rotate when the worm wheel 4.4 rotates. The piercing needle 2 passes through the first through hole and is installed on the piercing needle seat 5. The piercing needle rotating device 4 not only supports the piercing needle seat 5, but also, when the ingot is pierced or the cross-section is changed, the piercing piston rod needs to push the piercing needle seat 5 to drive the piercing needle 2 to move axially. At this time, the piercing needle rotating device 4 also plays a role of precise guidance.

[0042] Example 5

[0043] The front end of the front moving beam 1 is installed with the extrusion rod of the extruder, the rear end of the rear moving beam 3 is connected to the main plunger of the extruder, and the rear end of the front moving beam 1 is connected to the front end of the rear moving beam 3 by bolts. When the piercing needle needs to be rotated, the electric control system can be used to start the motor reducer 6.3, and the piercing needle rotating device 4 can be driven by the transmission shaft 6.2 to drive the piercing needle seat 5 and the piercing needle 2 to rotate. The rotation speed and angle can be accurately controlled according to the signal fed back by the encoder 6.4. At the same time, the piercing needle can also be driven to rotate by manually rotating the driven shaft 6.1. By entering the U-shaped manhole on the front moving beam 1, the piercing needle 2, the piercing needle seat 5 and the piercing needle rotating device 4 can be easily inspected and maintained. When it is necessary to remove the piercing needle rotating device 4, first pull out the transmission shaft 6.2 and the driven shaft 6.1 from both sides of the rear moving beam 3, then remove the piercing needle 2 from the piercing needle seat 5, and pull it out from the front end surface of the front moving beam 1, and finally remove the piercing needle rotating device 4 from the countersunk hole of the rear moving beam 3 and take it out as a whole from the U-shaped manhole. The entire disassembly and assembly process does not require the entire moving beam to be separated from the main plunger, saving time and effort.

[0044] The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry and are not described one by one here.

Claims

1. A split movable beam structure with automatic rotation and positioning of a punching needle, characterized in that: The invention comprises a front moving beam (1), a piercing needle (2), a rear moving beam (3), a piercing needle rotating device (4), a piercing needle needle seat (5) and a driving and detecting device (6), wherein the rear end of the front moving beam (1) is connected to the front end of the rear moving beam (3), a countersunk hole is formed at the center of the front end of the rear moving beam (3), and the piercing needle rotating device (4) is arranged in the countersunk hole; a first through hole and a second through hole are respectively penetrated in the center of the front moving beam (1) and the rear moving beam (3) along the axial direction, the first through hole is connected to the second through hole, the piercing needle (2) is installed on the piercing needle needle seat (5) through the first through hole, the piercing needle needle seat (5) is inserted into the second through hole and is connected to the piercing needle rotating device (4); a third through hole is formed on the side of the rear moving beam (3), and the driving and detecting device (6) is connected to the piercing needle rotating device (4) through the third through hole; The perforating needle rotating device (4) comprises a front end cover (4.1), a rolling bearing (4.2), a worm (4.3), a worm wheel (4.4), a rear end cover (4.5) and a cylinder (4.6); the worm wheel (4.4) is installed inside the cylinder (4.6) via the rolling bearing (4.2) and can rotate freely inside the cylinder (4.6); the front end cover (4.1) and the rear end cover (4.5) are respectively installed on both sides of the cylinder (4.6) and axially press the rolling bearing ( The outer end surface of the cylinder (4.2) is provided with a through groove at the center surface of the top of the cylinder (4.6) in a direction perpendicular to the axial direction, and the worm (4.3) passes through the through groove and meshes with the worm wheel (4.4); the piercing needle rotating device (4) not only supports the piercing needle seat (5), but also, when the ingot is pierced or the cross-section is varied, the piercing piston rod needs to push the piercing needle seat (5) to drive the piercing needle (2) to move axially. At this time, the piercing needle rotating device (4) also plays a role of precise guidance; A U-shaped manhole is provided on one side of the rear end of the front moving beam (1) for inspecting and maintaining the piercing needle (2), the piercing needle seat (5) and the piercing needle rotating device (4).

2. The split movable beam structure with automatic rotation and positioning of the punching needle according to claim 1, characterized in that: The outer circles on both sides of the gear teeth of the worm wheel (4.4) match the inner circle of the rolling bearing (4.2), and the inner circle of the cylinder (4.6) matches the outer circle of the rolling bearing (4.2).

3. The split movable beam structure with automatic rotation and positioning of the punching needle according to claim 1, characterized in that: The driving and detecting device (6) comprises a driven shaft (6.1), a transmission shaft (6.2), a motor reducer (6.3) and a rotary encoder (6.4); third through holes are formed on two side surfaces of the rear moving beam (3) along the central axis of the worm (4.3); one end of the transmission shaft (6.2) and the driven shaft (6.1) respectively penetrate into the third through holes and are respectively connected to two ends of the worm (4.3); the other end of the transmission shaft (6.2) is connected to one end of the motor reducer (6.3); and the other end of the motor reducer (6.3) is connected to the rotary encoder (6.4).

4. The split movable beam structure with automatic rotation and positioning of the punching needle according to claim 3, characterized in that: The transmission shaft (6.2) and the driven shaft (6.1) are respectively supported and positioned in the rear moving beam (3) through copper sleeves.

5. The split movable beam structure with automatic rotation and positioning of the punching needle according to claim 1, characterized in that: The front end of the front moving beam (1) is connected to an extrusion rod of an extruder, the rear end of the front moving beam (1) is connected to the front end of the rear moving beam (3) via bolts, and the rear end of the rear moving beam (3) is connected to a main plunger of the extruder.

6. The split movable beam structure with automatic rotation and positioning of the punching needle according to claim 3, characterized in that: It also includes an electrical control system, which is electrically connected to the motor reducer (6.3).

7. The split movable beam structure with automatic rotation and positioning of the punching needle according to claim 3, characterized in that: The rotary encoder (6.4) is connected to the electrical control system signal.

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