Square tube processing extrusion forming device

Abstract

The utility model belongs to extrusion forming technical field, concretely relates to a square tube processing extrusion forming device, include: the processing frame, the position of one end of processing frame top is provided with the cold-drawing die, the upper position of cold-drawing die is provided with the feeding port, and the round pipe is placed in the feeding port top, the upper position of processing frame is slidably installed with U-shaped fender, the inside of U-shaped fender is provided with round pocket, the top of round pocket is provided with lining rod, and one end of lining rod near cold-drawing die is provided with core head, and the position below one end of round pocket near cold-drawing die is provided with telescopic link, and the inside of U-shaped fender is rotatably installed with support block. The utility model can realize, can move U-shaped fender to adapt to the round pipe of different length under the condition that the round pocket is stationary, to the demand of the extrusion of different length round pipe into square pipe.

Description

Technical Field

[0001] This utility model belongs to the field of extrusion molding technology, specifically relating to an extrusion molding device for square tube processing. Background Technology

[0002] Square tubes are steel pipes with a square cross-section, typically manufactured using hot-rolling or cold-rolling processes. They possess good mechanical properties and corrosion resistance, and are widely used in construction, bridges, machinery manufacturing, automobiles, and steel structures. Square tubes come in various specifications, with lengths and thicknesses customizable to meet specific requirements. Due to their robust structure and high load-bearing capacity, they are often used in applications requiring the resistance to significant pressure or loads. The surface of square tubes can be treated with galvanizing or powder coating to enhance corrosion resistance.

[0003] Problems with existing technology: In the extrusion molding process of square tubes, a cold drawing process can be used to forcibly stretch and transform a round tube into a square tube through a mold. This method can not only quickly extrude and process a round tube into a square tube, but also increase the plasticity of the material after cold drawing. However, the existing cold drawing process requires the round tube to be sleeved on the outside of the liner rod before being extruded and formed by the mandrel and the mold. The traditional sleeve method is relatively troublesome, and the liner rod needs to be replaced when processing tubes of different lengths. Utility Model Content

[0004] The purpose of this invention is to provide a square tube extrusion molding device that can move a U-shaped stop to adapt to round tubes of different lengths while keeping the round tube stationary, thereby meeting the needs of extruding and transforming round tubes of different lengths into square tubes.

[0005] The specific technical solution adopted by this utility model is as follows: A square tube extrusion molding device includes: a processing frame, a cold drawing die is provided at one end of the top of the processing frame, a feeding port is provided above the cold drawing die, a round tube is placed on top of the feeding port, a U-shaped block is slidably installed above the processing frame, a round pocket is provided inside the U-shaped block, a liner is provided on top of the round pocket, and a core is provided at one end of the liner near the cold drawing die; A telescopic rod is provided at the lower end of the round bag near the cold drawing mold, and a support block is rotatably installed inside the U-shaped block.

[0006] The processing frame has a groove near the U-shaped stop, and a drive screw is rotatably installed inside the groove. The bottom of the U-shaped stop is threadedly connected to the drive screw.

[0007] A horizontal bar is fixedly connected to the inside of the support block, and a lifting ring is fixedly connected to the horizontal bar near the liner. The lifting ring is sleeved on the outside of the liner.

[0008] A movable tooth is fixedly connected to the lower part of the circular pocket, and a gear is provided on the support block near the movable tooth.

[0009] The number of belt gears is two, and the two belt gears are respectively set on both sides of the bottom of the round bag. Both belt gears are engaged with the moving teeth.

[0010] A motor is fixedly installed near one of the gears on the support block, and the output end of the motor is connected to the gear. The other gear is rotatably installed on the support block.

[0011] The bottom of the telescopic rod is detachably installed to the ground by bolts, and a Y-shaped bracket is fixedly connected to the output end of the telescopic rod. A round pocket is placed on the top of the Y-shaped bracket.

[0012] The end of the round bag away from the cold drawing mold is fixedly connected to a connecting plate, and the end of the liner rod passes through the connecting plate and is fixedly connected to a pull rope. The liner rod and the connecting plate are slidably installed.

[0013] A fixed needle is fixedly connected to the processing frame near the pull rope, and the end of the pull rope is fixedly connected to the fixed needle.

[0014] A drive motor is fixedly installed at the end of the processing frame near the drive screw, and the output end of the drive motor is fixedly connected to the drive screw.

[0015] The technical effects achieved by this utility model are as follows: This invention allows for the movement of a U-shaped stop to accommodate round tubes of different lengths while keeping the round tube stationary, thereby meeting the need for extruding and transforming round tubes of different lengths into square tubes.

[0016] In this invention, the crossbar can limit the height of the round tube to prevent it from slipping during transmission with the gear. At the same time, the crossbar can prevent the round tube from sliding. The function of the lifting ring is to bear part of the weight of the liner, so that the liner is suspended in the air when the round tube is fitted with it, thus reducing friction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the material feeding structure in this utility model; Figure 3 This is a schematic diagram of the structure during extrusion in this utility model; Figure 4 This is a schematic diagram of the U-shaped stop in this utility model; Figure 5 This is a schematic diagram of the support block in this utility model; Figure 6This is a schematic diagram of the structure of the pull rope in this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Processing frame; 2. Feed port; 3. Round tube; 4. Round bag; 5. Core head; 6. Liner rod; 7. Cold drawing die; 8. U-shaped stop block; 9. Telescopic rod; 101. Drive screw; 102. Drive motor; 103. Fixed needle; 104. Pull rope; 801. Support block; 802. Crossbar; 803. With gear. Detailed Implementation

[0019] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0020] like Figure 1 - Figure 3 As shown, a square tube processing extrusion molding device includes: a processing frame 1, a cold drawing die 7 is provided at one end of the top of the processing frame 1, a feeding port 2 is provided above the cold drawing die 7, and a round tube 3 is placed on the top of the feeding port 2.

[0021] In this process, a round tube 3 is fed to the processing frame 1 through the feeding port 2, and is extruded and deformed into a square tube by the cold drawing die 7.

[0022] See attached document Figure 1 - Figure 5 A U-shaped stop 8 is slidably installed above the processing frame 1. A circular pocket 4 is located inside the U-shaped stop 8, and a liner 6 is located at the top of the circular pocket 4. A core head 5 is located at the end of the liner 6 near the cold drawing die 7. A sliding groove is formed on the processing frame 1 near the U-shaped stop 8, and a drive screw 101 is rotatably installed inside the sliding groove. The bottom of the U-shaped stop 8 is threadedly connected to the drive screw 101. A crossbar 802 is horizontally fixedly connected inside the support block 801, and a lifting ring is fixedly connected to the crossbar 802 near the liner 6, with the lifting ring sleeved on the outside of the liner 6. A moving gear is fixedly connected below the circular pocket 4. A gear 803 is provided on the support block 801 near the moving tooth; there are two gears 803, which are respectively located on both sides of the bottom of the round bag 4, and both gears 803 are meshed with the moving tooth; a motor is fixedly installed on the support block 801 near one of the gears 803, and the output end of the motor is connected to the gear 803, while the other gear 803 is rotatably installed on the support block 801; a drive motor 102 is fixedly installed on the processing frame 1 near the end of the drive screw 101, and the output end of the drive motor 102 is fixedly connected to the drive screw 101.

[0023] According to the above structure, before the extrusion processing of the round tube 3, the device needs to be adjusted to meet the requirements of the tube size. First, the motor inside the support block 801 can be started, and the motor drives the gear 803 to rotate. Since the gear 803 is meshed with the moving teeth at the bottom of the round bag 4, the round bag 4 can be driven to move. During the movement of the round bag 4, the drive motor 102 needs to be started to rotate. The drive screw 101, which is fixedly connected to the output end of the drive motor 102, drives the U-shaped stop 8 to move. The moving direction is opposite to and synchronous with the moving direction of the round bag 4. In this way, the round bag 4 does not move relative to the processing frame 1, but the U-shaped stop 8 is displaced relative to both the round bag 4 and the processing frame 1. The distance between the U-shaped stop 8 and the cold drawing die 7 is used to adapt to the length of the round tube 3. The function of the crossbar 802 is to limit the height of the round pocket 4 to prevent it from slipping during the transmission with the gear 803. At the same time, the crossbar 802 can also prevent the round tube 3 from sliding. The function of the lifting ring is to bear part of the weight of the liner 6, so that the liner 6 is suspended when the round tube 3 is fitted with it, thus reducing friction. When the core head 5 is beveled around the end near the feed port 2, the round tube 3 can be easily fitted onto the outside of the core head 5 and the liner 6 under the action of gravitational potential energy. The core head 5 is a hollow structure and is relatively lightweight.

[0024] See attached document Figure 1 - Figure 6 A telescopic rod 9 is provided at the lower end of the round bag 4 near the cold drawing mold 7. A support block 801 is rotatably installed inside the U-shaped stop block 8. The bottom of the telescopic rod 9 is detachably installed to the ground by bolts. A Y-shaped bracket is fixedly connected to the output end of the telescopic rod 9. The round bag 4 is placed on the top of the Y-shaped bracket. A fixed needle 103 is fixedly connected to the processing frame 1 near the pull rope 104. The end of the pull rope 104 is fixedly connected to the fixed needle 103. A connecting plate is fixedly connected to the end of the round bag 4 away from the cold drawing mold 7. The end of the liner 6 passes through the connecting plate and is fixedly connected to the pull rope 104. The liner 6 is slidably installed with the connecting plate.

[0025] Based on the above structure, when the U-shaped stop 8 is positioned according to the length of the round tube 3, the round tube 3 can be fitted and squeezed. First, the end of the round bag 4 is pushed upward by the telescopic rod 9 so that its end is connected with the feeding port 2. At this time, the round bag 4 drives the support block 801 to rotate. Then the feeding port 2 lets the round tube 3 fall freely. The round tube 3 reaches the round bag 4 along the feeding port 2 and is sleeved on the outside of the core head 5 and the liner 6. Finally, the round tube 3 is blocked by the cross bar 802. Then the telescopic rod 9 retracts and places the round bag 4 horizontally on the processing frame 1. The drive motor 102 is started to move the U-shaped stop 8 toward the cold drawing mold 7. The round bag 4 and the round tube 3 on it also move toward the cold drawing mold 7. The end of the round tube 3 is sent into the interior of the cold drawing mold 7. The end of the round tube 3 is lifted and squeezed into a cone shape. It is pulled by the clamping clamp through the cold drawing mold 7 to be squeezed into a square tube. During the cold drawing process, the core head 5 will be subjected to a large tension. At this time, the pull rope 104 can pull the liner 6 to bear the tension. Then, the U-shaped stop 8 is reset under the drive of the drive motor 102, and the telescopic rod 9 lifts the round bag 4 again to fit the new round tube 3, and so on.

[0026] When the U-shaped stop 8 is adjusted to accommodate the different lengths of the round tube 3, the feed port 2 also needs to be adjusted by the staff to accommodate the tilt angle of the round tube 4.

[0027] The working principle of this utility model is as follows: by starting the motor inside the support block 801, the motor drives the gear 803 to rotate. Since the gear 803 is engaged with the moving teeth at the bottom of the round bag 4, the round bag 4 can be driven to move. During the movement of the round bag 4, the drive motor 102 needs to be started to rotate. The drive screw 101, which is fixedly connected to the output end of the drive motor 102, drives the U-shaped stop 8 to move. The moving direction is opposite to and synchronous with the moving direction of the round bag 4. In this way, the round bag 4 does not move relative to the processing frame 1, but the U-shaped stop 8 is displaced relative to both the round bag 4 and the processing frame 1. The distance between the U-shaped stop 8 and the cold drawing mold 7 is used to adapt to the length of the round tube 3.

[0028] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A square tube processing extrusion forming device, comprising a processing frame (1), wherein a cold drawing die (7) is provided at one end of the top of the processing frame (1), and a feeding port (2) is provided above the cold drawing die (7), wherein a round tube (3) is placed on top of the feeding port (2), characterized in that: A U-shaped stop (8) is slidably installed above the processing frame (1). A round pocket (4) is provided inside the U-shaped stop (8). A liner (6) is provided on the top of the round pocket (4). A core head (5) is provided at one end of the liner (6) near the cold drawing mold (7). A telescopic rod (9) is provided at the lower end of the round bag (4) near the cold drawing mold (7), and a support block (801) is rotatably installed inside the U-shaped stop (8).

2. The molding apparatus according to claim 1, characterized in that: The processing frame (1) has a groove near the U-shaped stop (8), and a drive screw (101) is rotatably installed inside the groove. The bottom of the U-shaped stop (8) is threadedly connected to the drive screw (101).

3. The molding apparatus according to claim 1, characterized in that: A crossbar (802) is fixedly connected to the inside of the support block (801) in a horizontal direction. A lifting ring is fixedly connected to the crossbar (802) near the liner (6). The lifting ring is sleeved on the outside of the liner (6).

4. The molding apparatus according to claim 1, characterized in that: A movable tooth is fixedly connected to the lower part of the round bag (4), and a gear (803) is provided on the support block (801) near the movable tooth.

5. The molding apparatus according to claim 4, characterized in that: The number of belt gears (803) is two, and the two belt gears (803) are respectively located on both sides of the bottom of the round bag (4). Both belt gears (803) are meshed with the moving teeth.

6. The molding apparatus according to claim 1, characterized in that: A motor is fixedly installed on the support block (801) near one of the gears (803), and the output end of the motor is connected to the gear (803). The other gear (803) is rotatably installed on the support block (801).

7. The molding apparatus according to claim 1, characterized in that: The bottom of the telescopic rod (9) is detachably installed to the ground by bolts. The output end of the telescopic rod (9) is fixedly connected to a Y-shaped bracket, and a round pocket (4) is placed on the top of the Y-shaped bracket.

8. The molding apparatus according to claim 1, characterized in that: The end of the round pouch (4) away from the cold drawing mold (7) is fixedly connected to a connecting plate, and the end of the liner (6) passes through the connecting plate and is fixedly connected to a pull rope (104). The liner (6) and the connecting plate are slidably installed.

9. The molding apparatus according to claim 1, characterized in that: The processing frame (1) has a fixed needle (103) fixedly connected to the position near the pull rope (104), and the end of the pull rope (104) is fixedly connected to the fixed needle (103).

10. The molding apparatus according to claim 1, characterized in that: The processing frame (1) has a drive motor (102) fixedly installed at the end near the drive screw (101), and the output end of the drive motor (102) is fixedly connected to the drive screw (101).

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