Flat round-head clamp for roller

Abstract

The utility model discloses a flat round-head clamp for a roller bar. Belongs to the technical field of optical glass secondary profiling. The problem that the two ends are round during roller production is mainly solved. The tool is mainly characterized by comprising a handle, a chuck and a hand lever, the hand lever part comprises a hand lever, a steel wire, an L-shaped plate and a limiting fixing block; the handle part comprises a movable handle rotationally connected to one end of the hand lever, and the movable handle is fixedly connected with the steel wire; the chuck part comprises a fixing plate, two rotating arms and two leveling rods, the fixing plate is fixed on the hand lever, the two rotating arms are rotatably mounted on the fixing plate, the two leveling rods are fixed at the outer ends of the two rotating arms, two branch steel wires are fixed at the other end of the steel wire through a limiting fixing block, and the two branch steel wires are connected with the inner ends of the two rotating arms. The roller rod flattening device has the advantages of being simple in structure, easy and convenient to operate and capable of flattening the two ends of the roller rod when the roller rod is secondarily pressed, and is mainly used for carrying out plane finishing on round heads at the two ends of the roller rod when the roller rod is secondarily pressed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the optical glass secondary compression technology field, specifically relates to a tool when roll bar is formed, and this tool can make the round head of the glass round bar of rolling become flat head. BACKGROUND

[0002] There are various production methods for optical glass lens blanks in optical imaging systems, such as primary compression, secondary compression and slicing, the primary compression and the secondary compression are hot working, and the slicing is cold working, wherein the roll bar belongs to the secondary compression.

[0003] Roll bar forming refers to that after glass plate material is prepared into a square bar, the square bar is softened in a softening furnace, and the softened glass square bar is rolled into a small round bar with a certain length and diameter. During rolling forming, the softened glass square bar reaches the specified diameter, but the length direction, especially the axis near the length direction, is not limited, and the edge in contact with the round bar has a certain friction, which causes the glass round bar to have a hemispherical protrusion at both ends after extrusion, which belongs to excess material and will unnecessarily waste glass, thereby affecting material utilization. If a tool is used to change the round head at both ends into a flat surface, the two ends do not need to be treated when slicing and meet the flat surface requirement, there is no material waste, so that the material utilization can be improved. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the utility model provides a tool for changing the round head at both ends into a flat head, so that the overall material utilization can be improved.

[0005] The technical solution of the utility model is: a round head flattening clamp for roll bar, characterized by: comprising a handle part, a clamp head part and a hand lever part; the hand lever part comprises a hand lever and a steel wire; the handle part comprises a movable handle rotatably connected to one end of the hand lever, and the movable handle is connected to one end of the steel wire; the clamp head part comprises a fixed plate, two rotating arms and two flattening bars, the fixed plate is fixed to the other end of the hand lever, the two rotating arms are symmetrically rotatably installed on the fixed plate, and the two flattening bars are respectively installed and fixed to the outer ends of the two rotating arms; the other end of the steel wire is fixed with two split steel wires through a limiting fixed block, and the two split steel wires are respectively connected to the inner ends of the two rotating arms.

[0006] In the technical solution of the utility model, the hand lever part further comprises an L-shaped plate and a spring; the hand lever part is a hollow curved lever composed of two sections of straight rods with a bending part; the L-shaped plate is welded inside the hollow tube at one end of the curved lever, the side plate of the L-shaped plate is provided with a first steel wire through hole, the steel wire passes through the spring and the first steel wire through hole on the L-shaped plate, and the steel wire is between the L-shaped plate and the limiting fixed block; one end of the spring is freely abutted against the side plate of the L-shaped plate, the steel wire passes through the middle, and the other end is freely abutted against the limiting fixed block.

[0007] In the technical solution of the present invention, one end of the side plate of the L-shaped plate is located at the bending part of the bending rod; the bending rod is provided with a second steel wire through hole which is opposite to the first steel wire through hole, and the steel wire passes through the second steel wire through hole, and the second steel wire through hole is a waist-shaped hole.

[0008] The technical solution of the present invention comprises two fixing plates, one upper plate and the other lower plate, which are fixed to the handle portion by a second bolt; one end of the fixing plate is semicircular and matches the handle portion, and the other end is flat.

[0009] In the technical solution of the present invention, the two rotating arms are provided with bolt through holes, and are respectively mounted between the upper and lower fixing plates through third bolts.

[0010] The bolt through holes in the technical solution of the utility model are arranged in a row at intervals, which are suitable for leveling bars of different lengths and specifications.

[0011] In the technical solution of the present invention, the outer end of the rotating arm is located outside the fixing plate and is provided with a through hole for a leveling rod; the leveling rod is fixed to the rotating arm by a fixing nut.

[0012] In the technical solution of the present invention, the leveling rod is perpendicular to the rotating arm; and the end surface of the leveling rod is tapered.

[0013] In the technical solution of the present invention, the movable handle is mounted on the hand lever via a first bolt.

[0014] In the technical solution of the utility model, a rubber sleeve is provided at one end of the hand lever to form a rubber sleeve handle.

[0015] The utility model adopts a flat round head clamp for roller rods composed of a handle part, a clamp part and a hand rod part, wherein the hand rod part includes a hand rod and a steel wire, an L-shaped plate, a spring, and a limit fixing block. The handle part includes a movable handle rotatably connected to one end of the hand rod, and the movable handle is fixedly connected to one end of the steel wire. The clamp part includes a fixed plate, two rotating arms and two flat rods. The fixed plate is fixed to the other end of the hand rod. The two rotating arms are symmetrically rotatably mounted on the fixed plate. The two flat rods are respectively mounted and fixed on the two rotating arms. At the outer end of the rotating arm, the other end of the steel wire is fixed with two branch steel wires through a limit fixing block. The two branch steel wires are fixedly connected to the inner ends of the two rotating arms respectively. Therefore, when the softened glass rod needs to be squeezed at both ends, the clamp is placed on the roller rod machine so that the softened glass rod is between the two flattening rods. When the movable handle and one end of the hand rod are tightly gripped, the movable handle rotates and drives the steel wire to move. When the steel wire moves, it drives the rotating arm to rotate. The rotating arm then drives the flattening rod to rotate inward. The flattening rod squeezes the two ends of the softened glass rod to make the two ends of the glass rod flat.

[0016] The utility model discloses a simple structure, easy operation and the advantage that can be even to the both ends of roller bar when twice pressure type roller bar, mainly used for the even of the round head that appears at the both ends of roller bar when twice pressure type roller bar. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model.

[0018] Figure 2 It is Figure 1 the plan view.

[0019] Figure 3 It is the extrusion front working state schematic diagram of the utility model.

[0020] Figure 4 It is the extrusion rear working state schematic diagram of the utility model.

[0021] Figure 5 It is the partial close-up view of chuck part under the extrusion rear working state of the utility model.

[0022] In the drawing: 1 - rubber sleeve, 2 - first bolt, 3 - movable handle, 4 - steel wire, 5 - curved rod, 6 - L-shaped plate, 7 - spring, 8 - second bolt, 9 - limit fixed block, 10 - third bolt, 11 - even bar, 12 - fixed nut, 13 - rotating arm, 14 - fixed plate. DETAILED DESCRIPTION

[0023] The specific embodiment of the utility model is further explained in detail in combination with the drawings.

[0024] As Figures 1 to 4 shown, the utility model discloses a roller bar even round head clamp, including handle part, chuck part and hand lever part. The clamp is simple in design, easy to operate, and can even the round head that appears at the both ends of roller bar when twice pressure type roller bar with smaller cost.

[0025] The handle part includes rubber sleeve 1, first bolt 2 and movable handle 3. The movable handle 3 is rotatably installed at the long straight rod one end of curved rod 5 through first bolt 2, and can rotate around first bolt 2 as the center. The rubber sleeve 1 is arranged at the long straight rod one end of curved rod 5, forms rubber sleeve handle, and is convenient for holding the clamp. The movable handle 3 is fixedly connected with one end of steel wire 4.

[0026] The hand lever part comprises a steel wire 4, a bent lever 5, an L-shaped plate 6, a spring 7 and a limiting fixed block 9. The bent lever 5 is composed of a long straight lever and a short straight lever, and the long straight lever is close to the movable handle 3. The L-shaped plate 6 is welded inside the short straight lever end of the bent lever 5, and the side plate of the L-shaped plate is located at the bending position of the bent lever 5. The side plate of the L-shaped plate is provided with a first steel wire through hole, and one end of the spring 7 is tightly abutted on the side plate of the L-shaped plate, and the other end is tightly abutted on the limiting fixed block 9. The other end of the steel wire 4 is fixedly connected with one end of two split steel wires through the first steel wire through hole and the spring 7 and the limiting fixed block 9. The long straight lever of the bent lever 5 is provided with a second steel wire through hole, and the second steel wire through hole and the spring 7 are opposite to the first steel wire through hole. The other end of the steel wire 4 passes through the second steel wire through hole and is fixed with the movable handle 3. When the movable handle 3 is in the upper position, the steel wire 4 is in the parallel state with the shorter straight lever of the bent lever 5.

[0027] The chuck part comprises a third bolt 10, two flat rods 11, a fixed nut 12, two rotating arms 13 and two fixed plates 14. The two fixed plates 14 are the same shape, one end is a semicircle shape same as the hand lever, and the other end is a triangular flat plate shape, and are arranged in an upper and lower interval and fixed on the short straight lever end of the bent lever 5 through the second bolt 8. The two rotating arms 13 are provided with bolt through holes, and the bolt through holes are a plurality of bolt through holes arranged at intervals, which are convenient for adjusting the distance between the two flat rods 11. The two rotating arms 13 are rotatably installed on the fixed plates 14 through the third bolt 10 passing through one of the bolt through holes, the rotating arms 13 are located between the upper and lower two fixed plates 14, the outer ends of the rotating arms 13 are located outside the fixed plates 14, and the steel wire 4 can drive the rotating arms 13 to rotate around the third bolt 10. The outer ends of the two rotating arms 13 are provided with flat rod through holes, and the two flat rods 11 are fixedly installed in the flat rod through holes at the outer ends of the two rotating arms 13 through the fixed nut 12, and the flat rods 11 are perpendicular to the rotating arms 13. The two split steel wires outside the limiting fixed block 9 are fixedly connected with the inner ends of the two rotating arms 13. The end face of the flat rod 11 is tapered, and the inclination degree is determined according to the length and diameter of the rolled rod. When the flat rod 11 is replaced according to the change of the glass rod specification, it is ensured that the inclined planes of the two flat rods 11 are parallel and perpendicular to the glass rod when the flat rod 11 rotates inward and extrudes the softened glass rod at both ends.

[0028] When the softened glass rod needs to be squeezed at both ends, the clamp is placed on the roller machine so that the softened glass rod is in the middle of the flattening rod 11. When the movable handle 3 is held by the hand with force, the movable handle 3 will rotate around the first bolt 2, and the steel wire 4 will move to the left, and the limiting block 9 will move forward together, and the limiting block 9 will compress the spring 7. Because the L-shaped plate 6 is welded on the inner wall of the curved rod 5, the movement of the spring 7 is blocked, so that the spring 7 is compressed and stores potential energy. When the steel wire 4 moves to the left, the rotating arm 13 rotates around the third bolt 10, and the rotating arm 13 drives the flattening rod 11 to rotate inward, and the two ends of the softened glass rod are squeezed, so that the two ends of the glass rod are flattened. The flattening rod 11 adjusts the shape of the sharp end according to the length and diameter of the roller rod. When the hand loosens the movable handle 3, the potential energy stored by the spring 7 is released, so that the steel wire 4 moves to the right and pushes the rotating arm 13 to reset. The rotating arm 13 rotates around the third bolt 10 and drives the flattening rod 11 to rotate outward, and one action is completed. When the next softened glass rod needs to be squeezed, the above-mentioned action is repeated to achieve the purpose of flattening the two ends.

[0029] The above is only the preferred embodiment of the present application, and does not limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A flat round head clamp for a roller, characterized by: The invention comprises a handle portion, a chuck portion and a hand lever portion; the hand lever portion comprises a hand lever and a steel wire (4); the handle portion comprises a movable handle (3) rotatably connected to one end of the hand lever, and the movable handle (3) is connected to one end of the steel wire (4); the chuck portion comprises a fixed plate (14), two rotating arms (13) and two leveling rods (11); the fixed plate (14) is fixed to the other end of the hand lever, the two rotating arms (13) are symmetrically and rotatably mounted on the fixed plate (14), the two leveling rods (11) are respectively mounted and fixed on the outer ends of the two rotating arms (13), and the other end of the steel wire (4) is fixed with two branch steel wires through a limit fixing block (9), and the two branch steel wires are respectively connected to the inner ends of the two rotating arms (13).

2. A roller clamp with a flat round head according to claim 1, characterized in that: The hand lever part also includes an L-shaped plate (6) and a spring (7); the hand lever part is a hollow curved rod (5) composed of two straight rods with a bend; the L-shaped plate (6) is welded to the inside of the hollow tube at one end of the curved rod (5); the side plate of the L-shaped plate (6) is provided with a first steel wire through hole, the steel wire (4) passes through the spring (7) and the first steel wire through hole on the L-shaped plate (6), and the steel wire (4) is between the L-shaped plate (6) and the limit fixing block (9); one end of the spring (7) is free to abut against the side plate of the L-shaped plate, the middle of the spring passes through the steel wire (4), and the other end is free to abut against the limit fixing block (9).

3. A roller clamp with a flat round head according to claim 2, characterized in that: One end of the side plate of the L-shaped plate (6) is located at the bend of the curved rod (5); the curved rod (5) is provided with a second steel wire through hole directly opposite to the first steel wire through hole, and the steel wire (4) passes through the second steel wire through hole, and the second steel wire through hole is a waist-shaped hole.

4. A roller clamp with a flat round head according to claim 1, 2 or 3, characterized in that: The fixing plate (14) consists of two pieces, an upper piece and a lower piece, which are fixed to the hand lever part by a second bolt (8); one end of the fixing plate (14) is semicircular and matches the hand lever part, and the other end is flat.

5. The roller clamp with a flat round head according to claim 4, characterized in that: The two rotating arms (13) are provided with bolt through holes and are respectively mounted between the upper and lower fixing plates (14) via third bolts (10).

6. A roller clamp with a flat round head according to claim 5, characterized in that: The bolt through holes are arranged in a row at intervals, and are suitable for leveling bars of different lengths and specifications.

7. A roller clamp with a flat round head according to any one of claims 1-3, 5-6, characterized in that: The outer end of the rotating arm (13) is located outside the fixing plate (14) and is provided with a leveling rod through hole; the leveling rod (11) is fixed to the rotating arm (13) via a fixing nut (12).

8. The roller clamp with a flat round head according to claim 7, characterized in that: The leveling rod (11) is perpendicular to the rotating arm (13); the end surface of the leveling rod (11) is conical.

9. A roller clamp with a flat round head according to any one of claims 1-3, 5-6, and 8, characterized in that: The movable handle (3) is mounted on the hand lever via a first bolt (2).

10. A roller clamp with a flat round head according to any one of claims 1-3, 5-6, and 8, characterized in that: One end of the hand lever is provided with a rubber sleeve (1) to form a rubber sleeve handle.

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