Headstock-chuck type positioner

Abstract

The utility model discloses a head and tail seat type positioner relates to positioner technical field, and its technical scheme main points are: including underframe, headstock and tailstock, and tailstock and underframe slide fit, and be provided with two support mechanism for supporting rotary workpiece between headstock and tailstock, be provided with the first drive mechanism for driving rotary workpiece rotation in the headstock, and tailstock and support mechanism all are provided with the limiting device for limiting tailstock and support mechanism. The utility model discloses a support mechanism is arranged for, thereby making support mechanism can play the supporting effect to rotary workpiece, greatly reduce the weight load of main shaft to rotary workpiece, make the main shaft have longer service life, and the meshing of driving gear and driven gear can be more accurate through the adjustment of the adjusting plate of first drive mechanism, make the installation and structure of first drive mechanism more simple, thereby effectively reduce the processing manufacture and production cost of first drive mechanism.

Description

Technical Field

[0001] This utility model relates to the field of positioner technology, and more specifically, to a head-and-tail seat type positioner. Background Technology

[0002] A head-and-tail positioner is a mechanical device that can clamp and rotate a workpiece placed between a head and a tail. It is generally used in welding and other scenarios. When combined with other welding equipment, it can achieve automated welding. When used in wire placement scenarios, it can achieve automated wire placement when combined with other wire placement equipment. The drive system is generally placed on a fixed head, and the tail central shaft and the workpiece follow the movement. The tail can move to adapt to rotating workpieces of different lengths.

[0003] The commonly used drive structure is as follows: the motor is connected to the input end of the first-stage reducer, the output end of the reducer is connected to the pinion shaft in the spindle box, the pinion meshes with the large gear spindle, and the rotating workpiece is directly and rigidly connected to the auxiliary disk of the spindle to achieve the purpose of workpiece rotation. The large gear spindle is equipped with a multi-bearing support structure such as crossed roller bearings or double-row tapered roller bearings to bear radial and axial loads and driving torque. This makes the existing gearbox structure complex, difficult to process and manufacture, and costly. Because the large gear spindle has to bear both the torque driving the rotating workpiece and the weight load of the rotating workpiece during operation, the large gear spindle is prone to damage, which increases the processing cost of the rotating workpiece.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a head-and-tail seat type positioner in order to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model embodiment is achieved through the following technical solution: a head-and-tail seat type positioner, including a base frame and a head seat and a tail seat disposed at both ends of the base frame, characterized in that: the tail seat is slidably engaged with the base frame, two support mechanisms for supporting rotating workpieces are disposed between the head seat and the tail seat and are slidably engaged with the base frame, the head seat is provided with a first driving mechanism for driving the rotating workpiece to rotate, and the tail seat and the support mechanisms are each provided with a limiting device for limiting the tail seat and the support mechanisms.

[0007] The present invention is further configured such that: the support mechanism includes a first mounting seat that slides with the base frame, two symmetrically distributed second mounting seats are slidably mounted on the support seat, a support roller is rotatably connected to the second mounting seat, and a second driving mechanism is provided on the first mounting seat for driving the two second mounting seats to move away from or towards each other synchronously.

[0008] The present invention is further configured such that: the second driving mechanism includes a lead screw disposed in the first mounting base, the lead screw includes a first threaded section, an intermediate section and a second threaded section, the first threaded section and the second threaded section have opposite directions of rotation, the two second mounting bases are respectively threadedly connected to the first threaded section and the second threaded section, and the first mounting base is provided with a turntable for driving the lead screw to rotate.

[0009] The present invention is further configured such that: the first driving mechanism includes a driving motor located inside the headstock, a reducer is fixedly connected to the output end of the driving motor, a driving gear is fixedly connected to the end of the reducer away from the driving motor, a driven gear meshing with the driving gear is rotatably connected to the headstock, and a main shaft for driving the rotating workpiece to rotate is provided on the driven gear.

[0010] The present invention is further configured such that: a mounting plate is provided between the drive gear and the reducer, the drive gear and the mounting plate are rotatably engaged, and an adjusting plate is fixedly connected to the lower end of the head seat on the mounting plate, and an adjusting screw is provided on the adjusting plate to abut against the mounting plate.

[0011] The present invention is further configured such that: the lower ends of the first mounting base and the tailstock are both fixedly connected to a support base that slides with the base frame; the limiting mechanism includes a limiting screw that is threadedly connected to the support base; and one end of the limiting screw located inside the support base is fixedly connected to an abutment plate.

[0012] In summary, this utility model has the following beneficial effects:

[0013] By setting a support mechanism that slides with the base frame between the headstock and tailstock, the support mechanism can support the rotating workpiece, greatly reducing the weight load of the rotating workpiece on the spindle and giving the spindle a longer service life.

[0014] The first drive mechanism, through the adjustment of the adjusting plate, enables more precise meshing between the driving gear and the driven gear. The rotation of the driving gear drives the driven gear to rotate, thereby driving the rotating workpiece to rotate. The setting of the support mechanism reduces the weight load of the rotating workpiece on the spindle, thus eliminating the need to install roller bearings in the first drive mechanism. This optimizes the first drive mechanism, making its installation and structure simpler, and effectively reducing the processing, manufacturing and production costs of the first drive mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a head-and-tail seat type positioner according to the present invention;

[0016] Figure 2 This is a schematic diagram of the support mechanism in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first driving mechanism in this utility model.

[0018] Reference numerals: 1. Base frame; 2. Headstock; 3. Tailstock; 4. Support mechanism; 401. First mounting base; 402. Second mounting base; 403. Support roller; 404. Second drive mechanism; 4041. Lead screw; 4042. First threaded section; 4043. Second threaded section; 4044. Turntable; 5. First drive mechanism; 501. Drive motor; 502. Reducer; 503. Drive gear; 504. Driven gear; 505. Main shaft; 506. Mounting plate; 507. Adjusting plate; 508. Adjusting screw; 6. Limiting device; 601. Limiting screw; 602. Abutment plate; 7. Support base. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] In one possible embodiment, please refer to Figure 1 and Figure 3 As shown, a head-and-tail positioner includes a base frame 1 and a head seat 2 and a tail seat 3 disposed at both ends of the base frame 1. The tail seat 3 is slidably engaged with the base frame 1, thereby enabling the processing of rotating workpieces of different sizes through the sliding of the base frame 1, thus expanding the application range of the positioner. Two support mechanisms 4 are provided between the head seat 2 and the tail seat 3, which are slidably engaged with the base frame 1 to support the rotating workpiece. By providing support mechanisms 4 between the head seat 2 and the tail seat 3 and slidably engaged with the base frame 1, the rotating workpiece can be supported, greatly reducing the weight load of the rotating workpiece on the spindle 505, thus extending the service life of the spindle 505.

[0021] For further details, please refer to Figure 1 and Figure 2As shown, the lower ends of the support mechanism 4 and the tailstock 3 are both fixedly connected to support seats 7 that slide with the base frame 1. The sliding of the support seats 7 and the base frame 1 enables the sliding of the support mechanism 4 and the tailstock 3. Both the tailstock 3 and the support mechanism 4 are provided with limiting devices 6 for limiting the tailstock 3 and the support mechanism 4. The limiting device includes a limiting screw 601 that is threadedly connected to the support seat 7. One end of the limiting screw 601 located inside the support seat 7 is fixedly connected to an abutment plate 602. The abutment plate 602 can increase the contact area with the base frame 1. When the support mechanism 4 and the tailstock 3 are moved to the required position, the limiting screw 601 is tightened to make the abutment plate 602 fully contact the base frame 1, so that a large frictional force is generated between the abutment plate 602 and the base frame 1, thereby ensuring the stability of the support mechanism 4 and the tailstock 3 during operation.

[0022] For further details, please refer to Figure 1 and Figure 2 As shown, the support mechanism 4 includes a first mounting base 401 that slides with the base frame 1. Two symmetrically distributed second mounting bases 402 are slidably mounted on the support base 7. Support rollers 403 are rotatably connected to the second mounting bases 402. The bearing of the rotating workpiece is placed between the two support rollers 403, so that the support rollers 403 do not affect the rotation of the rotating workpiece. The first mounting base 401 is provided with a second driving mechanism 404 for driving the two second mounting bases 402 to move away from or towards each other synchronously. By driving the second driving mechanism 404, the distance between the two second mounting bases 402 is changed, thereby supporting rotating workpieces of different sizes.

[0023] For further details, please refer to Figure 1 and Figure 2 As shown, the second drive mechanism 404 includes a lead screw 4041 disposed in the first mounting base 401. The lead screw 4041 includes a first threaded section 4042, an intermediate section, and a second threaded section 4043. The first threaded section 4042 and the second threaded section 4043 have opposite rotation directions. Two second mounting bases 402 are threadedly connected to the first threaded section 4042 and the second threaded section 4043, respectively. A turntable 4044 is disposed on the first mounting base 401 for driving the lead screw 4041 to rotate. By rotating the turntable 4044, the lead screw 4041 can be driven to rotate. Since the first threaded section 4042 and the second threaded section 4043 have opposite rotation directions, the two second mounting bases 402 will move in opposite directions, moving closer or further apart, thereby adjusting the distance between the two mounting bases.

[0024] For further details, please refer to Figure 1 and Figure 3As shown, a first drive mechanism 5 for driving the rotating workpiece is provided inside the headstock 2. The first drive mechanism 5 includes a drive motor 501 located inside the headstock 2. A reducer 502 is fixedly connected to the output end of the drive motor 501. A drive gear 503 is fixedly connected to the end of the reducer 502 away from the drive motor 501. A driven gear 504 meshing with the drive gear 503 is rotatably connected to the headstock 2. A main shaft 505 for driving the rotating workpiece is provided on the driven gear 504. The rotation of the drive motor 501 drives the rotation of the drive gear 503, which in turn drives the rotation of the driven gear 504, thereby driving the rotating workpiece to rotate. The reducer 502 can increase the torque of the driven gear 504, so that the main shaft 505 located on the driven gear 504 can effectively drive the rotation of the rotating workpiece. The support mechanism 4 reduces the impact of the rotating workpiece on the main shaft 505. The weight load is reduced, thus eliminating the need for roller bearings in the first drive mechanism 5, making the installation and structure of the first drive mechanism 5 simpler, thereby effectively reducing the processing and manufacturing costs of the first drive mechanism 5. A mounting plate 506 is also provided between the drive gear 503 and the reducer 502. The drive gear 503 and the mounting plate 506 are rotatably engaged. The head seat 2 is fixedly connected to the lower end of the mounting plate 506 with an adjusting plate 507. The adjusting plate 507 is provided with adjusting screws 508 that abut against the mounting plate 506. During installation, the position of the mounting plate 506 is adjusted by first fixing the adjusting plate 507 and then rotating the adjusting screws 508 on the adjusting plate 507 to ensure full meshing of the drive gear 503 and the driven gear 504. Then the mounting plate 506 is fixed. By adjusting the adjusting plate 507, the meshing of the drive gear 503 and the driven gear 504 can be made more precise.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A headstock-tailstock type positioner, comprising a base frame (1) and a headstock (2) and a tailstock (3) arranged at both ends of the base frame (1), characterized in that: The tailstock (3) is slidably engaged with the base frame (1). Two support mechanisms (4) for supporting the rotating workpiece are provided between the headstock (2) and the tailstock (3) and are slidably engaged with the base frame (1). The headstock (2) is provided with a first drive mechanism (5) for driving the rotating workpiece to rotate. The tailstock (3) and the support mechanism (4) are both provided with limiting devices (6) for limiting the tailstock (3) and the support mechanism (4).

2. The head-and-tail seat type positioner according to claim 1, characterized in that: The support mechanism (4) includes a first mounting seat (401) that slides with the base frame (1). Two symmetrically distributed second mounting seats (402) are slidably mounted on the support seat (7). A support roller (403) is rotatably connected to the second mounting seat (402). A second drive mechanism (404) is provided on the first mounting seat (401) for driving the two second mounting seats (402) to move away from or towards each other synchronously.

3. A headstock-style positioner as set forth in claim 2, characterized in that: The second drive mechanism (404) includes a lead screw (4041) disposed in the first mounting base (401). The lead screw (4041) includes a first threaded section (4042), an intermediate section and a second threaded section (4043). The first threaded section (4042) and the second threaded section (4043) have opposite directions of rotation. The two second mounting bases (402) are threadedly connected to the first threaded section (4042) and the second threaded section (4043) respectively. The first mounting base (401) is provided with a turntable (4044) for driving the lead screw (4041) to rotate.

4. A headstock-style positioner as set forth in claim 1, characterized in that: The first drive mechanism (5) includes a drive motor (501) located in the headstock (2). A reducer (502) is fixedly connected to the output end of the drive motor (501). A drive gear (503) is fixedly connected to the end of the reducer (502) away from the drive motor (501). A driven gear (504) meshing with the drive gear (503) is rotatably connected to the headstock (2). A spindle (505) for driving the rotating workpiece to rotate is provided on the driven gear (504).

5. A headstock-style positioner as set forth in claim 4, characterized in that: A mounting plate (506) is also provided between the drive gear (503) and the reducer (502). The drive gear (503) and the mounting plate (506) are rotatably engaged. The head seat (2) is located at the lower end of the mounting plate (506) and is fixedly connected to an adjusting plate (507). The adjusting plate (507) is provided with adjusting screws (508) that abut against the mounting plate (506).

6. A headstock-style positioner as set forth in claim 2, characterized in that: The lower ends of the first mounting base (401) and the tail (3) are fixedly connected to a support base (7) that slides with the base frame (1). The limiting mechanism includes a limiting screw (601) that is threadedly connected to the support base (7). One end of the limiting screw (601) located inside the support base (7) is fixedly connected to an abutment plate (602).

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