CN2445834Y

CN2445834Y - Cutting-off machine for reinforced bar

Info

Publication number: CN2445834Y
Application number: CN 00250173
Authority: CN
Inventors: 雷步忠; 赵利民; 景永盛
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-13
Filing date: 2000-09-13
Publication date: 2001-09-05
Anticipated expiration: 2010-09-13

Abstract

The utility model belongs to a steel product die cutting device, which belongs to the construction machinery field. The utility model is characterized in that a shearing knife is coincident with a knife seat machine body; the cross section of the head part of the shearing knife is designed into a closed ring shape; the head part of the shearing knife is provided with a tool box body; a material stopping block is in inclined plane wedge engagement with the machine body, and the inclined plane can be at any angle from 0 DEG to 90 DEG; a flywheel adopts a spoke type flywheel, and a flywheel cover can rotate around a hinge point below the flywheel cover; a tangential key transmission force is adopted between a crankshaft and a rotating key clutch. The utility model has the advantages of light weight, convenient installation, novel and beautiful appearance, and low production cost.

Description

Bar cropper

The utility model is to belong to building machinery field steel die cutting device, concrete indication bar cropper.

There is following point in present domestic bar cropper, as Fig. 1

1, because blade is fixed at the punch tool seat edge, crankshaft-link rod center (body center) and shearing center of effort be not on a line like this, power that crankshaft-link rod passed on punch tool seat and shearing force can produce a couple, this couple must body generation power be come balance, and the cabinet size structure increases.

Round end mortar nest between 2 crankshaft-link rods cooperates, this structure processing technology bad student cost height.

3. body heaviness, the head rigidity is poor, and distribution of material is unreasonable.

4. material blocking block can only have level adjustment, can not well adapt to the reinforcing bar of different-diameter.

5. flywheel is a solid construction, waste material.

6. difficulty is fixed, installs, adjusted to flywheel guard.

7. bent axle and clutch are turned and are located two key connecting, two key connecting requirement on machining accuracy height, otherwise two key can be simultaneously not stressed.Technology cost height.

The purpose of the utility model exploitation is in order to overcome the shortcoming of prior art, bar cropper a kind of simple in structure, in light weight, easy for installation to be provided.

The purpose of this utility model realizes in the following way; This bar cropper, comprise motor (14), the small belt pulley (9) that is installed on the frame (1), big belt pulley (8), power passed to bent axle (6), realize shearing function by connecting rod (5) and punch tool seat (4) again, it is characterized in that by gear drive with flywheel functions; Shearing force overlaps with the tool rest body, the head Cross section Design becomes closed circular, head band instrument casing, material blocking block engages for the inclined-plane voussoir with body, the inclined-plane can be 0 °～90 ° arbitrarily angled, flywheel adopts spoked flywheel, and flywheel guard can adopt the tangential keys power transmission around following hinge rotation between bent axle and the rotating key clutch.

The utility model compared with prior art has following advantage:

1. the blade with punch tool seat moves on to punch tool seat (body) center, makes to shear the line of force and overlap with the connecting rod line of force, does not have couple like this when shearing, and the tool rest both sides do not stress, can attenuate, and weight reduction.

2. connecting rod connects with punch tool seat and changes original mortar nest structure into present three fulcrum pin axle structures, and this structure that adds a fulcrum at the center can make shearing and bending moment reduce half, and this weight structure processing technology is better than original structure.

3. material blocking block engages for the inclined-plane voussoir with body, and can the follow one's bent position of stepless adjustment backgauge of such structure is to adapt to the reinforcing bar of cutting different-diameter.The inclined-plane can be 0 °～90 ° arbitrarily angled, can reach self-locking when angle 〉=81.6 °, and at this moment hold-down screw does not stress.

4. spoked flywheel replaces former solid formula flywheel, and this construction weight is the lightest under the situation of same rotary inertia.Economical and practical.

5. body head sectional dimension strengthens, and adds reinforcement at stressed maximum, and the maximum district of stress Cross section Design becomes closed circular, because distribution of material is reasonable, weight does not only increase minimizing on the contrary after the enlarging section size.So both increased rigidity, also can be with the head place of emptying as a tool box.Also saved the expense of making the tool box.

6. flywheel guard can be around following hinge rotation when install adjusting, and one of afterbody is adjusted fixed screw, installs when cover and need only adjust this some when improper and get final product, and all hold-down screws have made things convenient for installation all on the surface, have beautified external form.

7. the work done of bar cutting machine crankshaft is unidirectional, so just can adopt the tangential keys of folk prescription to power transmission, and machining amount reduces half, and productivity ratio doubles.

Below in conjunction with accompanying drawing the utility model is further described;

Fig. 1 is the prior art structure chart

Fig. 2 is the utility model master diagrammatic sketch

Fig. 3, Fig. 4 are the partial enlarged drawings of Fig. 2

Fig. 5 is the utility model diagrammatic sketch of bowing

Fig. 6-Fig. 9 is the amplification assumption diagram of Fig. 5

Shown in the figure; 1 body, 2. blades, 3. material blocking blocks, 4. punch tool seats, 5. connecting rods, 6. bent axles, 7. belt housings 8, flywheel (big belt pulley) is small belt pulley 10. control sticks 11. blades 12 9., turn key 13, clutch gear 14, motor 15, set bolt 16, bearing pin 17, oil nozzle 18, tangential keys 19, regulate bolt 20, hinge.

Fig. 2 moves on to punch tool seat (body) center with the blade of punch tool seat, makes to shear the line of force and overlap with the connecting rod line of force, does not have couple like this when shearing, and the tool rest both sides do not stress, can attenuate, and weight reduction.

Connecting rod connects with punch tool seat and changes original mortar nest structure into present three fulcrum pin axle structures among Fig. 3, and this structure that adds a fulcrum at the center can make shearing and bending moment reduce half, and this weight structure processing technology is better than original structure.

Material blocking block engages for the inclined-plane voussoir with body among Fig. 4, and can the follow one's bent position of stepless adjustment backgauge of such structure is to adapt to the reinforcing bar of cutting different-diameter.The inclined-plane can be 0 °～90 ° arbitrarily angled, can reach self-locking when angle 〉=81.6 °, and at this moment hold-down screw does not stress.

Body head sectional dimension strengthens among Fig. 6, adds reinforcement at stressed maximum, and the maximum district of stress Cross section Design becomes closed circular, because distribution of material is reasonable, weight does not only increase minimizing on the contrary after the enlarging section size.So both increased rigidity, also can be with the head place of emptying as a tool box.Also saved the expense of making the tool box.

Flywheel guard can be around following hinge rotation when Fig. 7 installed and adjusts,, one of afterbody adjusts fixed screw, installs when cover and need only adjust this some when improper and get final product, all hold-down screws have made things convenient for installation all on the surface, have beautified external form.

The work done of Fig. 8 bar cutting machine crankshaft is unidirectional, so just can adopt the tangential keys of folk prescription to power transmission, and machining amount reduces half, and productivity ratio doubles.

Spoked flywheel replaces former solid formula flywheel among Fig. 9, and this construction weight is the lightest under the situation of same rotary inertia.Economical and practical.

Claims

1. bar cropper, comprise motor (14), the small belt pulley (9) that is installed on the frame (1), big belt pulley (8), power passed to bent axle (6), realize shearing function by connecting rod (5) and punch tool seat (4) again, it is characterized in that by gear drive with flywheel functions; Shearing force overlaps with the tool rest body, the head Cross section Design becomes closed circular, head band instrument casing, material blocking block engages for the inclined-plane voussoir with body, the inclined-plane can be 0 °～90 ° arbitrarily angled, flywheel adopts spoked flywheel, and flywheel guard can adopt the tangential keys power transmission around following hinge rotation between bent axle and the rotating key clutch.

2. it is characterized in that according to claims 1 described a kind of bar cropper: blade is in the punch tool seat center fixation, and the shearing force position overlaps with punch tool seat, connecting rod and body center.

3. it is characterized in that according to claims 1 described a kind of bar cropper: punch tool seat adopts three fulcrum hinges to connect with connecting rod.

4. it is characterized in that according to claims 1 described a kind of bar cropper: material blocking block is the position that the inclined-plane wedge structure can stepless adjustment backgauge.0 °～90 ° of the angles on inclined-plane.

5. it is characterized in that according to claims 1 described a kind of bar cropper: the big belt pulley (8) with flywheel functions adopts the spoke structure.

6. it is characterized in that according to claims 1 described a kind of bar cropper: the body head adopts heavy in section thin-walled box-structure, and has the tool box function.

7. according to claims 1 described a kind of bar cropper, it is characterized in that: flywheel guard can be adjusted around rotating shaft rotation.

8. according to claims 1 described a kind of bar cropper, it is characterized in that: adopt the tangential keys power transmission between bent axle and the rotating key clutch.