A pipe material cold-drawing machine clamp trolley

Abstract

The utility model relates to a kind of pipe material cold-drawing machine clamp trolley, mobile is established on the machine body of cold-drawing machine, including vehicle body, the front end of vehicle body is equipped with the taper slot of small end forward, big end backward, the inside edge of the taper slot is respectively slidably equipped with the jaw plate that inwardly gathers and clamps pipe material end portion when moving forward, outwardly separates and loosens pipe material end portion when moving backward, the vehicle body in the rear end of jaw plate is equipped with the push plate that the jaw plate moves, the push plate both ends and the rear end between corresponding jaw plate are equipped with connecting plate, the front end of connecting plate and jaw plate are hinged, connecting plate rear end and push plate are hinged, the rear end of machine body is installed with drawing oil cylinder, the piston rod of drawing oil cylinder and vehicle body rear end surface are fixedly connected.The utility model moves forward by push plate and pushes jaw plate to adhere to taper slot inwardly gathers and clamps pipe material end portion when moving, outwardly separates and loosens pipe material end portion when moving backward, thus can provide stronger clamping force, and structure is simple, clamping stability is good, can satisfy the cold-drawing processing requirement of multiple specifications metal pipe.

Description

Technical Field

[0001] This utility model relates to the field of cold drawing machine technology, and in particular to a clamping trolley for a tube cold drawing machine. Background Technology

[0002] Cold drawing technology involves treating one end of a metal tube with a hammer, then flattening the end and passing it through the center hole of a cold drawing die. The end of the metal tube is then clamped by a clamping trolley mounted on the cold drawing machine body, and cold drawing is performed under the reverse traction of the clamping trolley, thereby extending the length of the metal tube.

[0003] In existing clamping trolley structures, some clamps use scissor mechanisms to clamp metal tubes, but the clamping force of this structure is insufficient for metal tubes with larger diameters, and slippage is likely to occur during cold drawing. Others use linkage mechanisms to perform the clamping action, but the overall structure is more complex, and there are many movements of various parts during clamping, resulting in unsatisfactory clamping stability. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a clamping trolley for a tube cold drawing machine with a simple structure, strong clamping force and good clamping stability.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a clamping trolley for a tube cold drawing machine, which is movably mounted on the body of the cold drawing machine, including a trolley body. The front end of the trolley body is provided with a conical groove with the small end facing forward and the large end facing backward. A jaw plate is slidably provided on the inner side of the conical groove, which moves inward to clamp the end of the tube when moving forward and moves outward to release the end of the tube when moving backward. A push plate is provided in the trolley body at the rear end of the jaw plate to push the jaw plate to move. A connecting plate is provided between the two ends of the push plate and the rear end of the corresponding jaw plate. The front end of the connecting plate is hinged to the jaw plate, and the rear end of the connecting plate is hinged to the push plate. A drawing cylinder is installed at the rear end of the machine body. The piston rod of the drawing cylinder is fixedly connected to the rear end face of the trolley body.

[0006] Furthermore, to better improve the clamping force of the jaw plate, the inner clamping surface of the jaw plate is densely covered with four-sided pyramidal blocks.

[0007] Specifically, the vehicle body at the rear end of the jaw plate has an inner cavity, a partition is provided in the middle of the inner cavity, a cylinder is provided in the inner cavity at the rear end of the partition, the front end of the cylinder is supported on the partition, a cylinder seat is fixed at the rear end of the inner cavity, the rear end of the cylinder is connected to the cylinder seat by a pin, and the piston rod of the cylinder is connected to the rear end face of the push plate.

[0008] Furthermore, the bottom surface of the inner cavity at the front end of the partition is provided with a rectangular guide groove, and a guide block is slidably provided in the rectangular guide groove. The bottom surface of the push plate is embedded and fixed with the guide block.

[0009] To facilitate material unloading after cold drawing, an arc-shaped material groove is provided on the bottom surface of the conical groove on the front side of the rectangular guide groove.

[0010] Pin seats are fixed on both sides of the inner cavity, and tension springs are connected between the pin seats and both ends of the push plate, so as to realize the rapid reset of the jaw plate by means of the tension springs.

[0011] Furthermore, rollers that roll in conjunction with the body are installed at the four corners of the vehicle body.

[0012] Furthermore, the rear end of the machine body is provided with a cylinder seat fixed to the ground, the rear end face of the machine body is fixedly connected to the front end face of the cylinder seat, and the drawing cylinder is fixed on the rear end face of the cylinder seat.

[0013] The beneficial effects of this utility model are as follows: This utility model sets the jaw plate in the conical groove at the front end of the vehicle body. When the jaw plate is pushed forward by the push plate to conform to the conical groove, it retracts inward to clamp the end of the tube material, and when it moves backward, it separates outward to release the end of the tube material. Thus, it can provide a strong clamping force when clamping the end of the tube material. Moreover, the structure is simple, the stability during the clamping process is good, and it can meet the cold drawing processing requirements of metal tubes of various specifications. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a partial structural schematic diagram of the present invention.

[0017] Figure 3 This is an enlarged structural schematic diagram of the square pyramid block described in this utility model.

[0018] Figure 4 This is a schematic diagram of the installation structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the vehicle body described in this utility model.

[0020] In the diagram: 1. Machine body, 2. Car body, 2-1. Conical groove, 2-2. Inner cavity, 2-3. Partition, 2-4. Rectangular guide groove, 2-5. Arc-shaped material trough, 3. Jaw plate, 4. Push plate, 5. Connecting plate, 6. Pulling cylinder, 7. Four-sided pyramid block, 8. Cylinder, 9. Cylinder seat, 10. Guide block, 11. Pin seat, 12. Tension spring, 13. Roller, 14. Cylinder seat, 15. Cover plate. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] like Figures 1-5 The diagram shows a clamping trolley for a tube cold drawing machine, which is movable on the machine body 1 of the cold drawing machine and used to clamp and pull metal tubes. The clamping trolley includes a body 2. The front end of the body 2 has a conical groove 2-1 with the small end facing forward and the large end facing backward. The rear end of the body 2 has a rectangular inner cavity 2-2. A partition 2-3 is provided in the middle of the inner cavity 2-2. A rectangular guide groove 2-4 is provided on the bottom surface of the inner cavity 2-2 at the front end of the partition 2-3. An arc-shaped material groove 2-5 is opened on the bottom surface of the conical groove 2-1 on the front side of the rectangular guide groove 2-4.

[0023] A jaw plate 3 is slidably provided on the inner side of the tapered groove 2-1. The jaw plate 3 has a right trapezoidal cross section. The clamping surface on the inner side of the jaw plate 3 is densely arranged with quadrangular pyramidal blocks 7 to improve the clamping force. A cylinder 8 is provided in the inner cavity 2-2 at the rear end of the partition 2-3. The front end of the cylinder 8 is supported on the partition 2-3. A cylinder seat 9 is fixed at the rear end of the inner cavity 2-2. The rear end of the cylinder 8 is connected to the cylinder seat 9 by a pin.

[0024] The piston rod of the cylinder 8 is connected to a push plate 4. A connecting plate 5 is provided between the two ends of the push plate 4 and the rear end of the corresponding jaw plate 3. The front end of the connecting plate 5 is hinged to the jaw plate 3, and the rear end of the connecting plate 5 is hinged to an elongated hole on the push plate 4. Driven by the cylinder 8, the jaw plate 3 can move along the bottom surface of the conical groove 2-1, conforming to its side. When the jaw plate 3 moves forward, both jaw plates 3 simultaneously retract inward to clamp the end of the metal tube to be cold-drawn. When the jaw plate 3 moves backward, both jaw plates 3 simultaneously separate outward to release the end of the cold-drawn metal tube.

[0025] A guide block 10 is slidably provided inside the rectangular guide groove 2-4, and the bottom surface of the push plate 4 is embedded and fixed with the guide block 10 to improve the stability of the movement of the push plate 4.

[0026] Pin seats 11 are fixed on the vehicle body 2 on both sides of the inner cavity 2-2. Tension springs 12 are connected between the pin seats 11 and the two ends of the push plate 4. Through the action of the tension springs 12, the jaw plate 3 at the end of the loosened metal tube can be quickly reset.

[0027] The four corners of the bottom surface of the vehicle body 2 are respectively rotatably mounted with rollers 13 that roll in cooperation with the body 1, and a cover plate 15 is fixedly connected to the upper surface of the vehicle body 2 at the position of the jaw plate 3.

[0028] The rear end of the machine body 1 is provided with a cylinder seat 14 fixed to the ground. The front end face of the drawing cylinder 6 used for cold drawing metal tubes is fixed to the rear end face of the cylinder seat 14. The rear end face of the machine body 1 is fixedly connected to the front end face of the cylinder seat 14. The piston rod of the drawing cylinder 6 is fixedly connected to the rear end face of the vehicle body 2.

[0029] In use, the drawing cylinder 6 pushes the clamping carriage forward along the machine body 1. When it approaches the cold drawing die of the cold drawing machine, the cylinder 8 pushes the jaw plate 3 forward. The two jaw plates 3 simultaneously retract inward and clamp the end of the metal tube to be cold drawn through the action of the four-sided pyramid block 7. Then, the drawing cylinder 6 pulls the clamping carriage backward to perform cold drawing on the metal tube. When the clamping carriage returns to its original position, the cold drawing ends. The cylinder 8 pulls the jaw plate 3 backward in the opposite direction. The two jaw plates 3 simultaneously separate outward, and the jaw plates 3 release the end of the cold-drawn metal tube. With the action of the tension spring 12, the jaw plates 3 quickly return to their original position. When the cold-drawn metal tube falls, its end falls into the arc-shaped material groove 2-5.

[0030] In a specific embodiment of this utility model, three sets of jaw plates 3 are arranged side by side inside the body 2 of the clamping trolley, and each is equipped with a pulling cylinder 6, so that three metal tubes can be cold-drawn at one time.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A clamping trolley for a tube cold drawing machine, movable on the machine body (1) of the cold drawing machine, including a trolley body (2), characterized in that: The front end of the vehicle body (2) is provided with a conical groove (2-1) with the small end facing forward and the large end facing backward. A jaw plate (3) is provided on the inner side of the conical groove (2-1) to clamp the end of the pipe material when moving forward and to separate and loosen the end of the pipe material when moving backward. A push plate (4) is provided in the vehicle body (2) at the rear end of the jaw plate (3) to push the jaw plate (3) to move. A connecting plate (5) is provided between the two ends of the push plate (4) and the rear end of the corresponding jaw plate (3). The front end of the connecting plate (5) is hinged to the jaw plate (3), and the rear end of the connecting plate (5) is hinged to the push plate (4). A pulling cylinder (6) is installed at the rear end of the machine body (1). The piston rod of the pulling cylinder (6) is fixed to the rear end face of the vehicle body (2).

2. The clamping trolley of the tube cold drawing machine as described in claim 1, characterized in that: The clamping surface of the jaw plate (3) is densely covered with four-sided pyramidal blocks (7) that can improve the clamping force.

3. The clamping trolley of the tube cold drawing machine as described in claim 1, characterized in that: The vehicle body (2) at the rear end of the jaw plate (3) has an inner cavity (2-2). A partition (2-3) is provided in the middle of the inner cavity (2-2). A cylinder (8) is provided in the inner cavity (2-2) at the rear end of the partition (2-3). The front end of the cylinder (8) is supported on the partition (2-3). A cylinder seat (9) is fixed at the rear end of the inner cavity (2-2). The rear end of the cylinder (8) is connected to the cylinder seat (9) by a pin. The piston rod of the cylinder (8) is connected to the rear end face of the push plate (4).

4. The clamping trolley of the tube cold drawing machine as described in claim 3, characterized in that: The bottom surface of the inner cavity (2-2) at the front end of the partition (2-3) is provided with a rectangular guide groove (2-4), and a guide block (10) is slidably provided in the rectangular guide groove (2-4). The bottom surface of the push plate (4) is embedded and fixed with the guide block (10).

5. The clamping trolley of the tube cold drawing machine as described in claim 4, characterized in that: An arc-shaped material trough (2-5) is provided on the bottom surface of the conical groove (2-1) on the front side of the rectangular guide groove (2-4).

6. The clamping trolley of the tube cold drawing machine as described in claim 4, characterized in that: Pin seats (11) are fixed on the vehicle body (2) on both sides of the inner cavity (2-2), and tension springs (12) are connected between the pin seats (11) and the two ends of the push plate (4).

7. The clamping trolley of the tube cold drawing machine as described in claim 1, characterized in that: The vehicle body (2) is equipped with rollers (13) at each of its four corners, which are in rolling cooperation with the body (1).

8. The clamping trolley of the tube cold drawing machine as described in claim 1, characterized in that: The machine body (1) has a cylinder seat (14) fixed to the ground at the rear end. The rear end face of the machine body (1) is fixed to the front end face of the cylinder seat (14). The pulling cylinder (6) is fixed to the rear end face of the cylinder seat (14).

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