Limiting device for top bending angle of hydraulic pipe bending machine

Abstract

The utility model provides a hydraulic pipe bender top bending angle limiting device which comprises a sliding rail, a limiting mechanism is arranged on one side of the sliding rail, a sliding block mechanism is arranged on the other side of the sliding rail, the limiting mechanism comprises a limiting block, a side edge tightening screw, a top tightening screw, a hinge and a backup plate, and the sliding block mechanism comprises a sliding block. The sliding block is provided with a support, the support is L-shaped flat iron, the inner wall of one side of the support is provided with a metal switch, the metal switch is in contact with the sliding rail, and a spring is arranged between the sliding block and the metal switch. The push-bending mechanism is simple in structure, when the push-bending mechanism is used, the push-bending die abuts against the limiting block, the limiting block drives the sliding rail, the sliding rail leaves the metal switch button, so that electricity of the magnetic starter is cut off, power-off limiting is carried out, and the limiting mechanism can adjust the position according to the scales on the sliding rail so as to meet adjustment and use requirements of people.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a limiting device for the top bending angle of a hydraulic pipe bender. Background Art

[0002] In chemical plants, power plants, refineries and other fields, motors or other instruments are needed. When equipping the motors and other instruments with threading tubes, the tubes need to be bent. The instrument threading tubes use threading protection galvanized steel pipes with different curvatures. At this time, the threading protection galvanized steel pipes need to be bent. In the bending process, a hydraulic pipe bender is needed. The hydraulic pipe bender is a pipe bending tool with a pipe bending function. The limit device of the traditional pipe bender mainly controls the curvature manually, and the limit effect is poor and the work efficiency is low. Utility Model Content

[0003] In view of this, in order to solve the problems existing in the technical background, the utility model proposes a limiting device for the top bending angle of a hydraulic pipe bender, and the specific technical solution is as follows:

[0004] A limiting device for the top bending angle of a hydraulic pipe bender comprises a slide rail, a limiting mechanism is provided on one side of the slide rail, a slider mechanism is provided on the other side of the slide rail, the limiting mechanism comprises a limiting block, a side tightening screw, a top tightening screw, a hinge and a backing plate, the slider mechanism comprises a slider, a bracket is provided on the slider, the bracket is an "L"-shaped flat iron, a metal switch is provided on the inner wall of one side of the bracket, the metal switch contacts the slide rail, and a spring is provided between the slider and the metal switch.

[0005] Furthermore, one end of the spring is connected to the inner wall of the bracket, and the other end is connected to the connecting column, and the connecting column is arranged above the slide rail. The spring is in a compressed state under normal circumstances.

[0006] Furthermore, in the limiting structure, a limiting block is arranged on the slide rail and is adjusted and fixed by tightening screws on the side and the top, and an inverted "U"-shaped support plate is provided on the limiting block, and a hinge is provided on the support plate to facilitate the upward flipping of the support plate.

[0007] Furthermore, the upper surface of the slide rail is provided with scale lines at equal distances along its length direction.

[0008] Furthermore, a mounting hole is provided above the bracket for connecting to a bottom plate of the electric hydraulic pipe bender.

[0009] Furthermore, the metal switch is connected to a cable, and the cable is connected to a starter.

[0010] The above technical solution has the following beneficial effects:

[0011] The utility model has a simple structure. When in use, the top bending mold hits the limit block, the limit block drives the slide rail, and the slide rail leaves the metal switch button, thereby disconnecting the power of the magnetic starter to implement power-off limiting. The limit mechanism of the utility model can adjust the position according to the scale on the slide rail to meet people's adjustment and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a hydraulic pipe bender top bending angle limiting device of the utility model Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of a hydraulic pipe bender top bending angle limiting device of the utility model Figure 2 ;

[0014] In the figure: 1-slide rail; 2-scale line; 3-back plate; 4-limit block; 5-side tightening screws; 6-upper tightening screws; 7-hinge; 8-bracket; 9-mounting hole; 10-slider; 11-spring; 12-connecting column; 13-metal switch; 14-cable. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings.

[0016] Embodiment 1, the following will be combined with the drawings in the embodiment of the utility model to clearly and completely describe the technical scheme in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0017] In this embodiment, refer to Figure 1-2A limiting device for the top bending angle of a hydraulic pipe bender shown in the figure comprises a slide rail 1, a limiting mechanism is provided on one side of the slide rail 1, a slider 10 mechanism is provided on the other side of the slide rail 1, the limiting mechanism comprises a limiting block 4, a side tightening screw 5, a top tightening screw, a hinge 7 and a backing plate 3, the slider 10 mechanism comprises a slider 10, a bracket 8 is provided on the slider 10, the bracket 8 is an "L"-shaped flat iron, a metal switch 13 is provided on the inner wall of one side of the bracket 8, the metal switch 13 contacts the slide rail 1, a spring 11 is provided between the slider 10 and the metal switch 13, one end of the spring 11 is connected to the inner wall of the bracket 8, The other end is connected to a connecting column 12, and the connecting column 12 is arranged above the slide rail 1. The spring 11 is in a compressed state under normal circumstances. The limit block 4 in the limit structure is arranged on the slide rail 1 and is adjusted and fixed by tightening the side screws 5 and the upper tightening screws 6. The limit block 4 is provided with an inverted "U"-shaped support plate 3, and the support plate 3 is provided with a hinge 7 to facilitate the upward flipping of the support plate 3. The upper surface of the slide rail 1 is provided with scale lines 2 at equal distances along its length direction. A mounting hole 9 is opened above the bracket 8 for connecting to the bottom plate of the electric hydraulic pipe bender. The metal switch 13 is connected to the cable 14, and the cable 14 is connected to the starter.

[0018] In this embodiment, the total length of the slide rail 1 is 40 cm. The slide rail 1 on the side close to the limiting mechanism, i.e., the left slide rail 1, is engraved with a 20 cm scale, and the scales are 20, 19, 18...3, 2, 1.

[0019] The middle of the right side of the slide rail 1 without the scale is the position of the slider 10, and the fixing screw of the slider 10 is provided with a bracket 8, and the bracket 8 is made of flat iron.

[0020] In this embodiment, the backing plate 3 is formed by a straight flat iron and an L-shaped bent flat iron connected by a hinge 7. The straight flat iron is 10 cm long, and the bent flat iron is 8 cm long and 5 cm high.

[0021] The bracket 8 is also made of flat iron. The total length of the flat iron of the bracket 8 is 25 cm. A 90-degree bend is punched out at 20 cm. A metal switch 13 is installed on the inner wall. The button of the metal switch 13 is normally open. The wiring on the button of the metal switch 13 is a two-core wire with a length of 30 cm. Then a waterproof plug is connected, and then a two-meter wire is connected. The wire is connected to the magnetic starter. The starter is connected to the power supply and then to the motor. The button of the metal switch 13 is connected in series with the self-locking wire of the starter to shut down the machine by power failure.

[0022] A spring 11 is also mounted on the slide rail 1, so that the slide rail 1 presses against the metal button, and the metal switch 13 button is in a normally closed state, and the circuit is turned on.

[0023] When the utility model is used in practice, the side tightening screws 5 and the upper tightening screws 6 are loosened and then the position of the limit block 4 is adjusted, and then the side tightening screws 5 and the upper tightening screws 6 are tightened to prevent the limit block 4 from shifting, and the power is turned on, and the top bending mold is pushed onto the limit block 4, and the limit block 4 drives the slide rail 1, and the slide rail 1 leaves the metal switch 13 button, thereby disconnecting the power of the magnetic starter to implement power-off limiting. The limit mechanism of the utility model can adjust the position according to the scale on the slide rail 1 to meet people's adjustment and use.

[0024] The basic principles and main features of the utility model are described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A limiting device for the top bending angle of a hydraulic pipe bender, characterized in that: It includes a slide rail, a limiting mechanism is provided on one side of the slide rail, a slider mechanism is provided on the other side of the slide rail, the limiting mechanism includes a limiting block, a side tightening screw, a top tightening screw, a hinge and a backing plate, the slider mechanism includes a slider, a bracket is provided on the slider, the bracket is an "L"-shaped flat iron, a metal switch is provided on the inner wall of one side of the bracket, the metal switch contacts the slide rail, and a spring is provided between the slider and the metal switch.

2. A limiting device for the top bending angle of a hydraulic pipe bender according to claim 1, characterized in that: One end of the spring is connected to the inner wall of the bracket, and the other end is connected to the connecting column. The connecting column is arranged above the slide rail. The spring is in a compressed state under normal circumstances.

3. A limiting device for the top bending angle of a hydraulic pipe bender according to claim 1, characterized in that: The limiting block in the limiting mechanism is arranged on the slide rail and is adjusted and fixed by tightening screws on the side and the upper part. The limiting block is provided with an inverted "U"-shaped supporting plate, and the supporting plate is provided with a hinge to facilitate the supporting plate to flip upwards.

4. A limiting device for the top bending angle of a hydraulic pipe bender according to claim 1 or 3, characterized in that: The upper surface of the slide rail is provided with scale lines at equal distances along the length direction thereof.

5. A limiting device for the top bending angle of a hydraulic pipe bender according to claim 1 or 2, characterized in that: A mounting hole is provided above the bracket for connecting to the bottom plate of the electric hydraulic pipe bender.

6. A limiting device for the top bending angle of a hydraulic pipe bender according to claim 1, characterized in that: The metal switch is connected to a cable, and the cable is connected to a starter.

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