Limiting device of automatic beveling machine

Abstract

The utility model discloses a limiting device of an automatic beveling machine. The limiting device comprises a beveling cutter installation head, a key shaft, a threaded rod and a limiting assembly. The automatic cutter feeding and retracting device has the advantages that the limiting assembly is arranged, cutter feeding and retracting can be automatically controlled, linear motion of the key shaft when the key shaft is improper is avoided, and impact and abrasion between parts of equipment can be reduced. Particularly, the service life of equipment can be prolonged and the maintenance cost can be reduced by only performing rotary motion at the limit positions of feeding and retreating, the key shaft can be ensured to accurately stop at a specific position and only perform rotary motion through the two-way limiting mode, the groove machining depth and the position precision can be strictly controlled, and the machining efficiency is improved. No matter in the lower feeding limit position or the upper returning limit position, machining errors caused by unnecessary movement of the key shaft can be avoided, and the situation that feeding and returning are inaccurate is avoided.

Description

Technical Field

[0001] The utility model relates to a limiting device, in particular to a limiting device for an automatic beveling machine, belonging to the technical field of beveling machines. Background Technique

[0002] In the field of metal processing, a beveling machine is an important device used for beveling metal workpieces for subsequent welding and other operations. The beveling machine is a special tool for chamfering the front end face of a pipeline during welding, solving the problems of non-standard angles, rough slopes, and high working noise in operations such as flame cutting and grinding machine grinding, and having the advantages of simple operation, standard angles, and smooth surfaces.

[0003] In the prior art, such as the rust-removing automatic beveling machine disclosed in the publication number CN201693357U, by arranging an inner brush head and an outer brush head on a key shaft, the device can simultaneously perform beveling and rust-removing treatments on a metal pipe, combining two processes into one, improving work efficiency. Moreover, by using a feed transmission mechanism, the device can complete the feed movement of the key shaft and the rotational movements of the beveling tool and the brush head with only one motor, simplifying the operation and reducing energy consumption. In the prior art, during the tool retraction process of the automatic beveling machine, manual operation is required. This operation mode depends on manual intervention, not only increasing the work intensity of the operator but also prone to inaccurate tool advancement and retraction during the operation, affecting the accuracy and quality of beveling processing. Summary of the Invention

[0004] The purpose of the utility model is to provide a limiting device for an automatic beveling machine to solve at least one of the above technical problems.

[0005] The utility model realizes the above purpose through the following technical solutions: A limiting device for an automatic beveling machine includes a beveling tool mounting head, a key shaft fixedly connected to the surface of the beveling tool mounting head, and a threaded rod fixedly connected to the end of the key shaft.

[0006] A limiting component is arranged on the surface of the threaded rod. The limiting component includes a bushing fixedly sleeved on the surface of the threaded rod, a pressing cover slidably sleeved on the surface of the bushing, and a first screw, a nut, a feed gear, an upper pressing cover, and a second screw for limiting and adjusting the position of the beveling tool. A nut is threadedly sleeved on the surface of the threaded rod, the nut is in contact with a first convex ring, a feed gear is sleeved on the surface of the nut, the pressing cover is fixedly connected to the feed gear through the first screw, an upper pressing cover is sleeved on the surface of the threaded rod above the feed gear, and the upper pressing cover is fixedly connected to the feed gear through the second screw.

[0007] As a further scheme of the utility model: A strip-shaped limiting chute is arranged on the surface of the key shaft.

[0008] As a further solution of the present utility model: a first convex ring is fixedly connected to the surface of the lower pressing cover, a first rabbet is provided on the surface of the first convex ring, a second convex ring is fixedly connected to the bottom surface of the upper pressing cover, a second rabbet is provided on the surface of the second convex ring, the second rabbet and the first rabbet face in opposite directions, placing holes are symmetrically provided on the upper and lower surfaces of the nut respectively, the upper and lower placing holes are arranged in a cross shape, a first spring pin is arranged inside the placing hole between the nut and the first convex ring, the bottom end of the first spring pin is slidably connected to the surface of the first convex ring, a second spring pin is arranged inside the placing hole between the nut and the second convex ring, and the top end of the second spring pin is slidably connected to the surface of the second convex ring.

[0009] As a further solution of the present utility model: the bottom end of the first spring pin is provided with a first arc surface adapted to the first rabbet, and the top end of the second spring pin is provided with a second arc surface adapted to the second rabbet.

[0010] As a further solution of the present utility model: the central aperture of the upper pressing cover is larger than the diameter of the threaded rod, a gasket is slidably arranged in the central hole of the upper pressing cover, and the gasket is fixedly connected to the threaded rod by an internal hexagonal socket head screw.

[0011] As a further solution of the present utility model: one side of the first rabbet and the second rabbet is a bevel surface, and the other side is a stepped surface, and the locking directions of the first rabbet and the second rabbet are opposite.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The present utility model is provided with a first spring pin and a second spring pin. When the key shaft is retracted upward, the upper end surface of the nut is actually in a contact friction state with the upper pressing cover. After the key shaft retracts to the in-place position, the second spring pin is snapped into the placing hole to finely adjust the position of the feed nut, so that a gap is formed between the upper end surface of the nut and the upper pressing cover, and a gap is formed between the lower end surface and the lower pressing cover, avoiding contact wear between the lower end surface of the nut and the lower pressing cover under the action of gravity during idling and reducing noise;

[0014] 2. The present utility model is provided with a limiting component, which can automatically control the feed and retraction of the tool, avoiding the linear movement of the key shaft at inappropriate times, and reducing the impact and wear between the components of the equipment. Especially at the extreme positions of the feed and retraction, only rotating motion can extend the service life of the equipment and reduce the maintenance cost. Through this two-way limiting method, it can ensure that the key shaft stops accurately at a specific position and only rotates, strictly controlling the depth and position accuracy of the groove processing. Whether it is the lower limit position of the feed or the upper limit position of the retraction, it can avoid processing errors caused by unnecessary movement of the key shaft and prevent inaccurate feed and retraction. Description of the Drawings

[0015] Figure 1Schematic diagram of the overall structure of the present utility model Figure I ;

[0016] Figure 2 Schematic diagram of the overall structure of the present utility model Figure II ;

[0017] Figure 3 Exploded structure schematic diagram of each component of the present utility model;

[0018] Figure 4 Schematic diagram of the structure of the upper gland in the present utility model;

[0019] Figure 5 Schematic diagram of the structure of the key shaft in the present utility model;

[0020] Figure 6 Schematic diagram of the structure of the nut and the first spring pin in the present utility model.

[0021] In the figure: 1, groove cutter mounting head; 2, key shaft; 3, strip-shaped limit chute; 4, threaded rod; 5, bushing; 6, first screw; 7, lower gland; 8, first convex ring; 9, first rabbet; 10, first spring pin; 11, nut; 12, placement hole; 13, feed gear; 14, second spring pin; 15, upper gland; 16, second convex ring; 17, second rabbet; 18, second screw; 19, gasket; 20, socket head cap screw. Detailed implementation method

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0023] Embodiment 1, as Figures 1 to 6 shown, a limiting device of an automatic beveling machine includes a groove cutter mounting head 1, a key shaft 2 fixedly connected to the surface of the groove cutter mounting head 1, and a threaded rod 4 fixedly connected to the end of the key shaft 2;

[0024] A limiting component is provided on the surface of the threaded rod 4. The limiting component includes a bushing 5 fixedly sleeved on the surface of the threaded rod 4, a lower pressing cover 7 slidably sleeved on the surface of the bushing 5, and a first screw 6, a nut 11, a feed gear 13, an upper pressing cover 15, and a second screw 18 for limiting and adjusting the position of the groove cutter. The nut 11 is threadedly sleeved on the surface of the threaded rod 4. The nut 11 contacts the first convex ring 8. The feed gear 13 is sleeved on the surface of the nut 11. The lower pressing cover 7 is fixedly connected to the feed gear 13 through the first screw 6. The upper pressing cover 15 is sleeved on the surface of the threaded rod 4 above the feed gear 13. The upper pressing cover 15 is fixedly connected to the feed gear 13 through the second screw 18, which can automatically control the feed and retraction of the tool, prevent the key shaft 2 from making a linear motion at inappropriate times, reduce the impact and wear between the components of the equipment. Especially at the limit positions of the feed and retraction, only rotational motion can extend the service life of the equipment and reduce the maintenance cost.

[0025] Embodiment 2. In addition to including all the technical features in Embodiment 1, this embodiment further includes: a strip-shaped limiting chute 3 is provided on the surface of the key shaft 2. During use, the key shaft 2 is installed at the installation position of the groove machine. Through the strip-shaped limiting chute 3, it can be ensured that the key shaft 2 can move within a certain range, thereby ensuring the feed and retraction of the tool.

[0026] It should be noted that the installation method between the key shaft 2 and the groove machine is prior art and will not be elaborated in detail here.

[0027] A first convex ring 8 is fixedly connected to the surface of the lower pressing cover 7. A first stop 9 is provided on the surface of the first convex ring 8. A second convex ring 16 is fixedly connected to the bottom surface of the upper pressing cover 15. A second stop 17 is provided on the surface of the second convex ring 16. The second stop 17 and the first stop 9 face in opposite directions. Placing holes 12 are symmetrically provided on the upper and lower surfaces of the nut 11 respectively, and the upper and lower placing holes 12 are arranged in a cross shape. A first spring pin 10 is provided inside the placing hole 12 between the nut 11 and the first convex ring 8. The bottom end of the first spring pin 10 is slidably connected to the surface of the first convex ring 8. A second spring pin 14 is provided inside the placing hole 12 between the nut 11 and the second convex ring 16. The top end of the second spring pin 14 is slidably connected to the surface of the second convex ring 16. Through the above settings, the key shaft 2 only makes rotational motion when feeding to the lower limit position and retracting to the upper limit position, and has the functions of automatically stopping feeding, automatically retracting, and automatically stopping retracting.

[0028] The central hole diameter of the upper pressing cover 15 is larger than the diameter of the threaded rod 4. A gasket 19 is slidably arranged in the central hole of the upper pressing cover 15. The gasket 19 is threadedly fixed to the threaded rod 4 through an internal hexagon socket head screw 20, which can limit the moving distance of the nut 11 and prevent the nut 11 from moving out of the threaded rod 4.

[0029] It should be noted that: the sizes of the gasket 19 and the bushing 5 can ensure that when they are moved to a certain position, they can respectively contact the pin shafts of the second spring pin 14 and the first spring pin 10.

[0030] Embodiment 3. In addition to all the technical features in Embodiment 1, this embodiment further includes: the bottom end of the first spring pin 10 is provided with a first arc surface adapted to the first stop 9, and the top end of the second spring pin 14 is provided with a second arc surface adapted to the second stop 17, which can ensure that during the use process, the first spring pin 10 or the second spring pin 14 is smoother during the interaction with the first stop 9 or the second stop 17. Whether entering or exiting the stop, it can reduce jamming and resistance, and improve the smoothness and coherence of the operation.

[0031] One side of the first stop 9 and the second stop 17 is a bevel surface, and the other side is a stepped surface. The stopping directions of the first stop 9 and the second stop 17 are opposite, and the relative movement between the nut 11 and the feed gear 13 can be controlled according to the movement of the feed gear 13.

[0032] When using this kind of limiting device, first assemble the device with the beveling machine and make the strip-shaped limiting chute 3 adapted to the limit on the device. After the assembly is completed, control the power motor of the device to run. The output shaft of the motor is connected to the input bevel gear, and the input bevel gear meshes with the bevel gear. The second gear fixedly arranged coaxially with the bevel gear meshes with the feed gear 13. The rotation of the feed gear 13 can be indirectly driven by the operation of the power motor. The above is the prior art and will not be described in detail here.

[0033] When the feed gear 13 rotates forward, it drives the upper cover 15 and the lower cover 7 to rotate synchronously. When the feed gear 13 rotates, it can push the second spring pin 14 that pops up from the upper end surface of the nut 11. At this time, the second spring pin 14 is located on the stepped surface of the second stop 17. The blocking effect of the stepped surface of the second stop 17 can drive the nut 11 to rotate, and the key shaft 2 makes a downward feeding movement; at this time, the first spring pin 10 on the lower end surface of the nut 11 does not enter the first stop 9 of the lower cover 7 of the feed gear 13 and is pressed into the placement hole 12 opened on the surface of the nut 11 by the first convex ring 8 on the surface of the lower cover 7. At this time, the lower cover 7 and the nut 11 are in a separated state;

[0034] When the gasket 19 matching the key shaft 2 presses the second spring pin 14 in the upper end hole of the nut 11 into the placement hole 12, the nut 11 is separated from the upper cover 15. At this time, the first spring pin 10 on the lower end surface of the nut 11 immediately slides out from the bevel surface after entering the first stop 9 of the lower cover 7. At this time, the nut 11 and the key shaft 2 rotate at the same speed, and the key shaft 2 only makes a rotational movement and cannot feed downward;

[0035] When the feed gear 13 rotates reversely, the first spring pin 10 on the lower end face of the nut 11 is immediately blocked by the stepped surface in the first stop 9 of the lower pressure cover 7 after entering the first stop 9 of the lower pressure cover 7, that is, blocked by the lower pressure cover 7. At this time, the nut 11 rotating at the same speed as the key shaft 2 stops, and the key shaft 2 moves quickly upward;

[0036] During this process, when the key shaft 2 moves upward, it drives the bushing 5 to move upward. The bushing 5 can be used to press the first spring pin into the placement hole 12 on the lower end face of the nut 11. At this time, the nut 11 is disengaged from the feed gear 13 again. The nut 11 rotates at the same speed as the key shaft 2, and the key shaft 2 only rotates and cannot continue to retract upward (i.e., the automatic stop retraction function).

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A limit device for an automatic beveling machine, comprising a beveling tool mounting head (1), a key shaft (2) fixedly connected to the surface of the beveling tool mounting head (1), and a threaded rod (4) fixedly connected to the end of the key shaft (2); It is characterized in that: A limit assembly is provided on the surface of the threaded rod (4). The limit assembly includes a bushing (5) fixedly sleeved on the surface of the threaded rod (4), a lower pressing cover (7) slidably sleeved on the surface of the bushing (5), and a first screw (6), a nut (11), a feed gear (13), an upper pressing cover (15), and a second screw (18) for limiting and adjusting the position of the beveling tool. The surface of the threaded rod (4) is threadedly sleeved with a nut (11). The nut (11) is in contact with a first convex ring (8). A feed gear (13) is sleeved on the surface of the nut (11). The lower pressing cover (7) is fixedly connected to the feed gear (13) by a first screw (6). An upper pressing cover (15) is sleeved on the surface of the threaded rod (4) above the feed gear (13). The upper pressing cover (15) is fixedly connected to the feed gear (13) by a second screw (18).

2. The limit device of the automatic beveling machine according to claim 1, characterized in that: A strip-shaped limit chute (3) is provided on the surface of the key shaft (2).

3. The limit device of the automatic beveling machine according to claim 1, characterized in that: A first convex ring (8) is fixedly connected to the surface of the lower pressing cover (7). A first stop (9) is provided on the surface of the first convex ring (8). A second convex ring (16) is fixedly connected to the bottom surface of the upper pressing cover (15). A second stop (17) is provided on the surface of the second convex ring (16). The second stop (17) and the first stop (9) face in opposite directions. Placing holes (12) are symmetrically provided on the upper and lower surfaces of the nut (11) respectively. The upper and lower placing holes (12) are arranged in a cross shape. A first spring pin (10) is provided inside the placing hole (12) between the nut (11) and the first convex ring (8). The bottom end of the first spring pin (10) is slidably connected to the surface of the first convex ring (8). A second spring pin (14) is provided inside the placing hole (12) between the nut (11) and the second convex ring (16). The top end of the second spring pin (14) is slidably connected to the surface of the second convex ring (16).

4. The limit device of the automatic beveling machine according to claim 3, characterized in that: The bottom end of the first spring pin (10) is provided with a first arc surface adapted to the first stop (9). The top end of the second spring pin (14) is provided with a second arc surface adapted to the second stop (17).

5. The limit device of the automatic beveling machine according to claim 1, characterized in that: The central aperture of the upper pressing cover (15) is larger than the diameter of the threaded rod (4). A gasket (19) is slidably arranged in the central hole of the upper pressing cover (15). The gasket (19) is threadedly fixed to the threaded rod (4) by an internal hexagon socket head screw (20).

6. The limit device of the automatic beveling machine according to claim 3, characterized in that: One side of the first stop (9) and the second stop (17) is a slope, and the other side is a step surface. The stopping directions of the first stop (9) and the second stop (17) are opposite.

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