Clamping device for cold drawing of steel

Abstract

This utility model discloses a clamping device for cold-drawn flat steel, including a base, a clamping mechanism, a concave support, a cylinder, a hydraulic rod, a clamping plate, and teeth. Four sets of clamping mechanisms are provided above the base, two of which are fixed to one side of the base, and the other two are movably mounted on the other side of the base. Each clamping mechanism includes a concave support, a cylinder, a hydraulic rod, a clamping plate, and teeth. A cylinder is located above the concave support, and the driving end of the cylinder passes through the lower part of the concave support and is connected to a hydraulic rod. The end of the hydraulic rod is connected to a clamping plate. Both the clamping surface of the clamping plate and the clamping surface of the concave support are provided with staggered teeth. The teeth contact both the upper and lower surfaces of the flat steel. This utility model can simultaneously clamp both the upper and lower surfaces of the flat steel, thereby improving the clamping effect and preventing the flat steel from slipping out of the clamping device.

Description

Technical Field

[0001] This utility model relates to the technical field of flat steel processing, and in particular to the technical field of clamping devices for cold-drawn flat steel. Background Technology

[0002] Flat steel refers to steel with a width of 12-300mm, a thickness of 3-60mm, a rectangular cross-section, and slightly blunt edges. Flat steel can be finished steel products, or it can be used as raw material for welded pipes and as slab blanks for rolled thin plates. Main uses: As finished products, flat steel can be used to make hoops, tools and machine parts, and in construction as structural components for building frames and ladders.

[0003] During the processing of flat steel, it needs to be cold-drawn. During the cold-drawing process, the flat steel needs to be clamped to prevent movement. However, the current clamping device cannot achieve overall clamping when the thickness of the flat steel is uneven or the mold is worn.

[0004] To address the problems mentioned above, for example, application number CN201822136303.2 discloses a clamp for holding flat steel, including a left hydraulic cylinder, a right hydraulic cylinder, and a T-shaped base. A first spacer and a second spacer are symmetrically fixed on both sides of the T-shaped base. A pair of bearing grooves are provided on the track in the middle of the T-shaped base, and bearings are provided in the bearing grooves. Bearing rods pass through the first hole of the first spacer, the bearing hole of the bearing, and the second hole of the second spacer, respectively. A spacer sliding plate is slidably mounted on the bearings. The spacer sliding plate has a cylindrical groove, and a wear-resistant rubber rod is provided on the cylindrical groove. The outer surface of the wear-resistant rubber rod protrudes from the flat steel insertion port of the spacer sliding plate. When the clamp holds the flat steel, one of the contact surfaces will be the wear-resistant rubber rod, i.e., an elastic clamping method, achieving the purpose of clamping the flat steel as a whole, thus ensuring product quality.

[0005] However, the clamps in the aforementioned patents have low adaptability and are limited when dealing with flat steel of different sizes. In addition, the clamps cannot be used for processing and clamping. Furthermore, when transferring idle flat steel in a concentrated manner, the weight of the clamps themselves is often less than that of the batch of flat steel, which can easily lead to the problem of an excessively high center of gravity.

[0006] To address the problems mentioned above, for example, application number CN202322407133.8 discloses a clamping fixture for processing flat steel, including a first fixture, a flat steel plate, and a second fixture. The flat steel plate is clamped between the first and second fixtures. A left base and a right base are respectively provided on the left and right sides of the first fixture. The tops of the left and right bases are connected by a crossbeam. A left clamping plate is connected through a clamping column to the top of the left base. By setting the left clamping plate, the right clamping plate, the sliding groove, the first fixture, and the second fixture, the distance between the first and second fixtures can be adjusted according to the length of the flat steel plate. Then, the position of the right clamping plate in the sliding groove can be adjusted according to the width of the flat steel plate, thereby adjusting the distance between the left and right clamping plates. The clamping column rotates through a threaded structure, causing its height to decrease, which in turn causes the height of the left clamping plate to decrease. Thus, the distance between the left clamping plate and the crossbeam corresponds to the thickness of the flat steel plate. This clamping fixture is suitable for processing and fixing flat steel, which is beneficial for processing and fixing flat steel of different sizes and offers greater flexibility.

[0007] However, the aforementioned patents still have the following drawbacks:

[0008] During the cold drawing process, the flat steel is subjected to tension on both sides and is prone to slipping out of the clamp. This is because the above structure only clamps and presses the upper surface of the flat steel, and does not clamp both the upper and lower surfaces of the flat steel at the same time, resulting in a low clamping effect. Summary of the Invention

[0009] The purpose of this invention is to solve the problems in the prior art by proposing a clamping device for cold-drawn flat steel, which can clamp both the upper and lower sides of the flat steel at the same time, thereby improving the clamping effect and preventing the flat steel from coming out of the clamping device.

[0010] To achieve the above objectives, this utility model proposes a clamping device for cold-drawn flat steel, including a base, a clamping mechanism, a concave support, a cylinder, a hydraulic rod, a clamping plate, and teeth. Four sets of clamping mechanisms are provided above the base, two of which are fixed to one side of the base, and the other two are movably mounted on the other side of the base. Each clamping mechanism includes a concave support, a cylinder, a hydraulic rod, a clamping plate, and teeth. A cylinder is located above the concave support, and the driving end of the cylinder passes through the lower part of the concave support and is connected to a hydraulic rod. The end of the hydraulic rod is connected to a clamping plate. Both the clamping surface of the clamping plate and the clamping surface of the concave support are provided with staggered teeth, which contact the upper and lower surfaces of the flat steel.

[0011] Preferably, the teeth are serrated, and the direction of the tooth tips is inclined in the opposite direction to the direction of force on the flat steel.

[0012] Preferably, the base has two grooves symmetrically formed along its length on its upper surface, each groove containing a threaded rod. The outer wall of each threaded rod is threaded with a movable block, and a connecting rod is provided above the movable block.

[0013] Preferably, the top end of the connecting rod is connected to the bottom end face of the concave support, and each of the concave supports is on the same horizontal plane.

[0014] Preferably, one end of the threaded rod extends outward through the side wall of the base, and a handle is provided at the extended end of the threaded rod.

[0015] Preferably, one end of the handle is provided with a first threaded hole, and the side wall of the base is provided with a second threaded hole corresponding to the first threaded hole. The first threaded hole and the second threaded hole are connected by a locking bolt through a common thread.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model, through the combined action of a cylinder, hydraulic rod, clamping plate, and toothed teeth, can effectively clamp flat steel. When the flat steel is placed on the concave support, the lower surface of the flat steel first contacts the toothed teeth on the concave support. Then, the cylinder drives the hydraulic rod to descend, which in turn drives the clamping plate to descend, so that the clamping plate contacts the upper surface of the flat steel. At the same time, the tooth tips are slightly embedded in the material surface under the action of clamping force, forming an initial engagement. When the flat steel is subjected to tension, the flat steel tends to slide outward. Since the tilt direction of the tooth tips is opposite to the direction of the tension, the greater the tension, the deeper the tooth tips are embedded. The pressure on the contact surface increases non-linearly, forming a self-reinforcing clamping effect, thereby improving the clamping effect of the flat steel and making it difficult for the flat steel to fall out of the clamping device.

[0018] 2. This utility model, through the combined action of the threaded rod, the moving block, and the handle, can drive the clamping mechanism to move. The rotation of the handle drives the threaded rod to rotate, which in turn drives the clamping mechanism to move, thus enabling the clamping of flat steel of different widths, making it more practical. Attached Figure Description

[0019] Figure 1 This is the front view of the clamping device for cold-drawn flat steel of this utility model;

[0020] Figure 2 This is a schematic diagram of the clamping mechanism of the clamping device for cold-drawn flat steel of this utility model;

[0021] Figure 3 This is a schematic diagram of the moving block of the clamping device for cold-drawn flat steel according to this utility model;

[0022] Figure 4 This is a schematic diagram of the flat steel clamping device for cold-drawn flat steel according to this utility model;

[0023] In the diagram: 1-base, 2-clamping mechanism, 201-concave support, 202-cylinder, 203-hydraulic rod, 204-clamping plate, 205-tooth pattern, 3-groove, 4-threaded rod, 5-moving block, 6-connecting rod, 7-handle, 8-first threaded hole, 9-second threaded hole, 10-locking bolt. Detailed Implementation

[0024] See Figures 1 to 4 This utility model relates to a clamping device for cold-drawn flat steel, comprising a base 1, clamping mechanisms 2, a concave support 201, a cylinder 202, a hydraulic rod 203, a clamping plate 204, and teeth 205. Four sets of clamping mechanisms 2 are provided above the base 1, two sets of which are fixed to one side of the base 1, and the other two sets are movably disposed on the other side of the base 1. Each clamping mechanism 2 includes a concave support 201, a cylinder 202, a hydraulic rod 203, a clamping plate 204, and teeth 205. A cylinder 202 is located above the concave support 201, and the driving end of the cylinder 202 passes through the lower part of the concave support 201 and is connected to the hydraulic rod 203. The end of 203 is connected to a clamping plate 204. The clamping surface of the clamping plate 204 and the clamping surface of the concave support 201 are both provided with staggered teeth 205. The teeth 205 contact the upper and lower surfaces of the flat steel. Driven by the cylinder 202, the hydraulic rod 203 is lowered, and the hydraulic rod 203 drives the clamping plate 204 to lower, so that the clamping plate 204 contacts the upper surface of the flat steel. At the same time, the tooth tips are slightly embedded in the material surface under the action of clamping force, forming a preliminary bite. When the flat steel is subjected to tension, the flat steel tends to slide outward. Since the tilt direction of the tooth tips is opposite to the direction of tension, the greater the tension, the deeper the tooth tips are embedded. The pressure on the contact surface increases non-linearly, forming a self-reinforcing clamping effect.

[0025] See Figure 2 The tooth pattern 205 is serrated, and the tooth tip direction of the tooth pattern 205 is inclined in the opposite direction to the force direction of the flat steel. Since the tooth tip inclination direction is opposite to the tensile force direction, the greater the tensile force, the deeper the tooth tip is embedded, and the pressure on the contact surface increases nonlinearly, forming a self-reinforcing clamping effect, thereby improving the clamping effect of the flat steel.

[0026] See Figure 1 and Figure 3 The base 1 has two grooves 3 symmetrically arranged along its length on its upper part. Each groove 3 has a threaded rod 4. The outer wall of each threaded rod 4 is threaded with a moving block 5. A connecting rod 6 is provided above the moving block 5. When the threaded rod 4 rotates, it drives the moving block 5 to move, which in turn drives the clamping mechanism 2 to move back and forth.

[0027] See Figure 1The top end of the connecting rod 6 is connected to the bottom end face of the concave support 201, and each of the concave supports 201 is on the same horizontal plane to avoid unevenness of the flat steel after clamping.

[0028] See Figure 1 One end of the threaded rod 4 extends outward through the side wall of the base 1. A handle 7 is provided at the extended end of the threaded rod 4. By rotating the handle 7, the threaded rod 4 is rotated, which in turn drives the moving block 5 to move. The moving block 5 then drives the clamping mechanism 2 to move back and forth.

[0029] See Figure 1 and Figure 4 The handle 7 has a first threaded hole 8 at one end, and the base 1 has a second threaded hole 9 corresponding to the first threaded hole 8 on its side wall. The first threaded hole 8 and the second threaded hole 9 are connected by a locking bolt 10. When the moving block 5 moves the clamping mechanism 2 to a suitable position, the operator screws the locking bolt 10 into the first threaded hole 8 and the second threaded hole 9 in sequence to limit the threaded rod 4 and prevent the threaded rod 4 from rotating after the flat steel is clamped.

[0030] The working process of this utility model:

[0031] In the operation of this utility model's clamping device for cold-drawn flat steel, when the flat steel is placed on the concave support 201, the lower surface of the flat steel first contacts the teeth 205 on the concave support 201. Subsequently, the hydraulic rod 203 is driven down by the cylinder 202, and the hydraulic rod 203 drives the clamping plate 204 down, so that the clamping plate 204 contacts the upper surface of the flat steel. At the same time, the tooth tips are slightly embedded in the material surface under the action of clamping force, forming a preliminary engagement. When the flat steel is subjected to tension, the flat steel tends to slide outward. Since the tilt direction of the tooth tips is opposite to the direction of tension, the greater the tension, the deeper the tooth tips are embedded. The pressure on the contact surface increases non-linearly, forming a self-reinforcing clamping effect, thereby improving the clamping effect of the flat steel and making it difficult for the flat steel to fall out of the clamping device.

[0032] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A clamping device for cold-drawn flat steel, characterized in that: The system includes a base (1), a clamping mechanism (2), a concave support (201), a cylinder (202), a hydraulic rod (203), a clamping plate (204), and a toothed groove (205). Four sets of clamping mechanisms (2) are provided above the base (1), two sets of which are fixed to one side of the base (1), and the other two sets are movable on the other side of the base (1). Each clamping mechanism (2) includes a concave support (201), a cylinder (202), a hydraulic rod (203), and a toothed groove (205). 3) Clamping plate (204) and teeth (205): A cylinder (202) is provided above the concave support (201). The driving end of the cylinder (202) passes through the lower part of the concave support (201) and is connected to a hydraulic rod (203). The end of the hydraulic rod (203) is connected to a clamping plate (204). The clamping surface of the clamping plate (204) and the clamping surface of the concave support (201) are both provided with staggered teeth (205). The teeth (205) are in contact with the upper and lower surfaces of the flat steel.

2. The clamping device for cold-drawn flat steel as described in claim 1, characterized in that: The tooth pattern (205) is serrated, and the tooth tip direction of the tooth pattern (205) is inclined in the opposite direction to the force direction of the flat steel.

3. The clamping device for cold-drawn flat steel as described in claim 1, characterized in that: Two grooves (3) are symmetrically provided on the upper part of the base (1) along the length direction. A threaded rod (4) is provided in each groove (3). A moving block (5) is threadedly connected to the outer wall of the threaded rod (4). A connecting rod (6) is provided above the moving block (5).

4. The clamping device for cold-drawn flat steel as described in claim 3, characterized in that: The top end of the connecting rod (6) is connected to the bottom end face of the concave support (201), and each of the concave supports (201) is on the same horizontal plane.

5. The clamping device for cold-drawn flat steel as described in claim 3, characterized in that: One end of the threaded rod (4) extends outward through the side wall of the base (1), and the extended end of the threaded rod (4) is provided with a handle (7).

6. The clamping device for cold-drawn flat steel as described in claim 5, characterized in that: The handle (7) has a first threaded hole (8) at one end, and the base (1) has a second threaded hole (9) corresponding to the first threaded hole (8) on its side wall. The first threaded hole (8) and the second threaded hole (9) are connected by a locking bolt (10) through a common thread.

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