CN211222223U

CN211222223U - Press machine braking device adopting double-eccentric cam structure

Info

Publication number: CN211222223U
Application number: CN201921890763.2U
Authority: CN
Inventors: 傅平; 汪利祥; 黄建勇; 陈远; 张国伟; 洪卫建
Original assignee: ZHEJIANG XIAOSHAN GOLDEN TORTOISE MACHINERY CO Ltd
Current assignee: ZHEJIANG XIAOSHAN GOLDEN TORTOISE MACHINERY CO Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-08-11
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to an adopt press arresting gear of two eccentric cam structures, the braking system technical field of affiliated press, including set-square and bent axle, be equipped with the eccentric braking subassembly that cup joints with bent axle looks jump ring formula parallel key on the bent axle, the set-square lower extreme is equipped with the brake band pull rod, between brake band pull rod and eccentric braking subassembly, the set-square upper end all is equipped with the arm-tie, bolted connection is fixed between arm-tie and set-square, the arm-tie cup joints fixedly with brake band pull rod looks nut lock formula, be equipped with the clamp plate with arm-tie looks bolt-up on the arm-tie, be equipped with the steel band that cup joints with eccentric braking subassembly looks inlay ring winding between two arm-ties, be equipped with the back bearing subassembly nested with set-square between two arm-ties, the back bearing subassembly top is equipped with the spacing nested spacing axle of set-square looks jump ring formula parallel key. The brake has the characteristics of good operation stability, large braking force, small braking inertia, good heat dissipation and long service life. The brake effect is guaranteed, meanwhile, the heat dissipation is improved, and the service cycle is prolonged.

Description

Press machine braking device adopting double-eccentric cam structure

Technical Field

The utility model relates to a braking system technical field of press, concretely relates to adopt press arresting gear of two eccentric cam structures.

Background

The press (including a punch press and a hydraulic press) is a universal press with an exquisite structure. The press machine drives the working mechanism by a motor through a transmission mechanism to apply technical force to the workpiece. The transmission mechanism is a belt transmission and gear transmission speed reducing mechanism; the working mechanism comprises a screw mechanism, a crank connecting rod mechanism and a hydraulic cylinder. The press machine has the characteristics of wide application, high production efficiency and the like, and can be widely applied to processes of cutting, punching, blanking, bending, riveting, forming and the like. The metal is processed into parts by applying a strong pressure to the metal blank to cause plastic deformation and fracture of the metal. When the mechanical press works, a motor drives a large belt pulley (usually used as a flywheel) through a triangle belt, and a crank-slider mechanism is driven through a gear pair and a clutch, so that a slider and a male die move down linearly. After the forging and pressing work of the mechanical press is finished, the sliding block moves upwards, the clutch is automatically disengaged, and meanwhile, the automatic device on the crankshaft is switched on, so that the sliding block stops near a top dead center.

The braking mechanism of the commonly used middle and small vertical crank press mostly adopts a belt brake, but the principle of the belt brake is that friction is generated between a friction material and a brake wheel to manufacture braking torque so as to achieve the purpose of braking. The energy loss of the press is increased due to the action of the braking torque, 10-20% of energy is consumed on the brake by the press, harmful heat is generated, and the abrasion of friction materials is accelerated. In particular, the braking effect of complete lubrication and incomplete lubrication is unstable. So that the working stability and the safety of the press have hidden troubles.

Disclosure of Invention

The utility model discloses mainly solve and have the running stability difference among the prior art, braking force is little, braking inertia is big, poor and the short not enough of life of thermal diffusivity, provide an adopt press arresting gear of two eccentric cam structures, it has that running stability is good, braking force is big, braking inertia is little, good thermal diffusivity and long service life's characteristics. The brake effect is guaranteed, meanwhile, the heat dissipation is improved, and the service cycle is prolonged. Avoid equipment overheated influence normal operating, prevent the potential safety hazard.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides an adopt press brake equipment of two eccentric cam structures, includes three corner seats and bent axle, the bent axle on be equipped with the eccentric braking subassembly that cup joints with bent axle looks jump ring formula parallel key, the three corner seats lower extreme be equipped with the movable brake band pull rod that cup joints of three corner seats mutually, brake band pull rod and eccentric braking subassembly between, the three corner seats upper end all be equipped with the arm-tie, arm-tie and three corner seats between looks bolted connection fixed, arm-tie and brake band pull rod looks nut locking formula cup joint fixedly, the arm-tie on be equipped with the clamp plate with arm-tie looks bolt-up, be equipped with the steel band that cup joints with eccentric braking subassembly looks inlay loop formula between two arm-ties and clamp plate, be equipped with the back bearing subassembly nested with three corner seats mutually between two arm-ties, back bearing subassembly top be equipped with the spacing nested spacing axle of three corner seats looks jump ring formula parallel key.

Preferably, the brake band pull rod is provided with a handle which is sleeved with the brake band pull rod, and a pressure spring which is sleeved with the handle is arranged between the handle and the triangular seat.

Preferably, a pressure spring seat sleeved with the handle is arranged between the pressure spring and the triangular seat.

Preferably, the eccentric brake assembly comprises a brake wheel, a brake wheel fixing shaft sleeve which is embedded with a crankshaft clamp spring type flat key in a limiting mode is arranged between the brake wheel and the crankshaft, a plurality of supporting connecting rods which are distributed in an annular mode at equal intervals are arranged between the brake wheel fixing shaft sleeve and the eccentric brake wheel, a left eccentric brake ring which is connected with the brake wheel through bolts is arranged at one side end of the brake wheel, and a right eccentric brake ring which is connected with the brake wheel through bolts is arranged at the other side end of the brake wheel.

Preferably, the left eccentric braking ring and the right eccentric braking ring are respectively provided with a plurality of radiating waist circular grooves which are distributed annularly.

Preferably, the circle centers of the outer circles of the left eccentric braking ring and the right eccentric braking ring and the circle center of the inner hole form an eccentric distance of 3-6 mm.

Preferably, the support bearing assembly comprises a small shaft, and bearings in movable contact with the outer circles of the left eccentric braking ring and the right eccentric braking ring are respectively arranged at two ends of the small shaft.

The utility model discloses can reach following effect:

the utility model provides an adopt press arresting gear of two eccentric cam structures compares with prior art, has that operating stability is good, braking force is big, braking inertia is little, good heat dissipation and long service life's characteristics. The brake effect is guaranteed, meanwhile, the heat dissipation is improved, and the service cycle is prolonged. Avoid equipment overheated influence normal operating, prevent the potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the eccentric braking assembly of the present invention.

Fig. 3 is a schematic side view of the eccentric brake assembly of the present invention.

Fig. 4 is a schematic structural diagram of a support bearing assembly according to the present invention.

In the figure: the brake device comprises a brake belt pull rod 1, a handle 2, a pressure spring 3, a limiting shaft 4, a steel belt 5, asbestos copper 6, an eccentric brake component 7, a crankshaft 8, a supporting bearing component 9, a pressure plate 10, a pulling plate 11, a triangular seat 12, a pressure spring seat 13, a brake wheel fixing shaft sleeve 14, a supporting connecting rod 15, a heat dissipation waist circular groove 16, a left eccentric brake ring 17, a brake wheel 18, a right eccentric brake ring 19, a bearing 20 and a small shaft 21.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1-4, a press brake device adopting a double eccentric cam structure comprises a triangular seat 12 and a crankshaft 8, wherein an eccentric brake assembly 7 sleeved with the crankshaft 8 in a clamp spring type flat key manner is arranged on the crankshaft 8, the eccentric brake assembly 7 comprises a brake wheel 18, a brake wheel fixing shaft sleeve 14 embedded with the crankshaft 8 in a limiting manner in a clamp spring type flat key manner is arranged between the brake wheel 18 and the crankshaft 8, 4 supporting connecting rods 15 distributed in an annular manner at equal intervals are arranged between the brake wheel fixing shaft sleeve 14 and the eccentric brake wheel 18, a left eccentric brake ring 17 connected with the brake wheel 18 through a bolt is arranged at one side end of the brake wheel 18, and a right eccentric brake ring 19 connected with the brake wheel 18 through a bolt is arranged at the other side end of the brake wheel 18. The circle centers of the outer circles of the left eccentric brake ring 17 and the right eccentric brake ring 19 are at an eccentric distance of 4.5mm from the circle center of the inner hole. The left eccentric brake ring 17 and the right eccentric brake ring 19 are both provided with 4 heat dissipation waist circular grooves 16 which are distributed annularly. The lower end of the triangular seat 12 is provided with a brake belt pull rod 1 movably sleeved with the triangular seat 12, the brake belt pull rod 1 is provided with a handle 2 sleeved with the brake belt pull rod 1, and a pressure spring 3 sleeved with the handle 2 is arranged between the handle 2 and the triangular seat 12. A pressure spring seat 13 which is sleeved with the handle 2 is arranged between the pressure spring 3 and the triangular seat 12. The brake band pulling rod 1 and the eccentric brake assembly 7, the upper end of the triangular seat 12 are all provided with a pulling plate 11, the pulling plate 11 and the triangular seat 12 are fixedly connected through bolts, the pulling plate 11 and the brake band pulling rod 1 are fixedly sleeved in a nut locking mode, the pulling plate 11 is provided with a pressing plate 10 fastened with the pulling plate 11 through bolts, a steel belt 5 sleeved with the eccentric brake assembly 7 in a clamping and embedding mode is arranged between the two pulling plates 11 and the pressing plate 10, a supporting bearing assembly 9 nested with the triangular seat 12 is arranged between the two pulling plates 11, the supporting bearing assembly 9 comprises a small shaft 21, and two ends of the small shaft 21 are respectively provided with a bearing 20 movably contacted with the outer circles of the left eccentric brake ring 17 and the right eccentric brake ring 19. A limiting shaft 4 which is in limiting nesting with a clamp spring type flat key of the triangular seat 12 is arranged above the supporting bearing assembly 9.

In conclusion, the press brake device adopting the double-eccentric cam structure has the characteristics of good operation stability, large brake force, small brake inertia, good heat dissipation and long service life. The brake effect is guaranteed, meanwhile, the heat dissipation is improved, and the service cycle is prolonged. Avoid equipment overheated influence normal operating, prevent the potential safety hazard.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides an adopt press arresting gear of two eccentric cam structures which characterized in that: comprises a triangular seat (12) and a crankshaft (8), wherein an eccentric brake assembly (7) which is sleeved with a crankshaft (8) through a clamp spring type flat key is arranged on the crankshaft (8), a brake band pull rod (1) which is movably sleeved with the triangular seat (12) is arranged at the lower end of the triangular seat (12), pull plates (11) are arranged between the brake band pull rod (1) and the eccentric brake assembly (7) and at the upper end of the triangular seat (12), the pull plates (11) and the triangular seat (12) are fixedly connected through bolts, the pull plates (11) and the brake band pull rod (1) are fixedly sleeved in a nut locking mode, press plates (10) which are fastened with the pull plates (11) through bolts are arranged on the pull plates (11), a steel belt (5) which is sleeved with the eccentric brake assembly (7) through a clamping and encircling mode is arranged between the two pull plates (11), and a support shaft assembly (9) which is nested with the triangular seat (12) is arranged between the two pull plates (11), and a limiting shaft (4) which is in limiting nesting with the triangular seat (12) through a circlip type flat key is arranged above the supporting bearing assembly (9).

2. The brake device of a press machine adopting a double eccentric cam structure according to claim 1, wherein: the brake band pull rod (1) is provided with a handle (2) which is sleeved with the brake band pull rod (1), and a pressure spring (3) which is sleeved with the handle (2) is arranged between the handle (2) and the triangular seat (12).

3. The brake device of a press machine adopting a double eccentric cam structure according to claim 2, wherein: a pressure spring seat (13) which is sleeved with the handle (2) is arranged between the pressure spring (3) and the triangular seat (12).

4. The brake device of a press machine adopting a double eccentric cam structure according to claim 1, wherein: the eccentric brake assembly (7) comprises a brake wheel (18), a brake wheel fixing shaft sleeve (14) which is embedded with a clamp spring type flat key of the crankshaft (8) in a limiting mode is arranged between the brake wheel (18) and the crankshaft (8), a plurality of supporting connecting rods (15) which are distributed in an equidistant annular mode are arranged between the brake wheel fixing shaft sleeve (14) and the eccentric brake wheel (18), a left eccentric brake ring (17) which is connected with the brake wheel (18) through bolts is arranged at one side end of the brake wheel (18), and a right eccentric brake ring (19) which is connected with the brake wheel (18) through bolts is arranged at the other side end of the brake wheel (18).

5. The brake device of a press machine adopting a double eccentric cam structure according to claim 4, wherein: the left eccentric braking ring (17) and the right eccentric braking ring (19) are respectively provided with a plurality of radiating waist circular grooves (16) which are distributed annularly.

6. The brake device of a press machine adopting a double eccentric cam structure according to claim 4, wherein: the circle centers of the outer circles of the left eccentric braking ring (17) and the right eccentric braking ring (19) and the circle center of the inner hole form an eccentric distance of 3-6 mm.

7. The brake apparatus for a press employing a double eccentric cam structure according to claim 4, 5 or 6, wherein: the supporting bearing assembly (9) comprises a small shaft (21), and bearings (20) in movable contact with the outer circles of the left eccentric braking ring (17) and the right eccentric braking ring (19) are respectively arranged at two ends of the small shaft (21).