Automatic feeding device for steel pipe drawing machine

Abstract

This invention relates to an automatic feeding device for a steel pipe drawing machine, comprising a feeding structure, a pipe sorting structure, an output structure, and a frame. The feeding structure includes a feeding chain and a feeding carrier connected to the frame. The feeding chain is flexible. The feeding carrier includes a U-shaped feeding frame. One end of the feeding frame is equipped with a feeding sprocket with rotational power, and another end of the feeding frame is also equipped with a discharge ramp. One end of the feeding chain bypasses the feeding sprocket, allowing one end of the feeding chain to be synchronously driven by the feeding sprocket. The other end of the feeding chain is directly or indirectly connected to the other end of the feeding frame. The pipe sorting structure includes a sorting carrier and sorting components with lifting power. This invention can store multiple steel pipes and output them one by one sequentially, resulting in low labor intensity and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel pipe drawing technology, and in particular to an automatic feeding device for steel pipe drawing machines. Background Technology

[0002] Currently, precision steel pipe drawing machines generally use an inclined mandrel feeding system on the top of the main machine, requiring the billet tube to be placed at an angle on the drawing feeding platform. The main operating method is as follows: an inclined storage platform or storage box is set on the top of the drawing machine, and a crane is used to lift the billet tube to the storage platform or storage box. The billet tubes are then arranged one by one by the operator and manually moved to the drawing feeding position.

[0003] The storage platform or storage box is located on the upper part of the drawing machine, which is relatively high. Manual overhead crane loading is inconvenient and poses certain safety issues. Manual overhead crane lifting of pipes requires a temporary storage area and dedicated personnel, which occupies space and increases labor costs. Manual loading is labor-intensive, and the production cycle is not continuous, affecting the production speed. It is impossible to achieve automated production line-style production between upstream and downstream processes. Summary of the Invention

[0004] One object of the present invention is to solve or alleviate the above-mentioned technical problems.

[0005] The present invention employs an automatic feeding device for a steel pipe drawing machine, comprising a feeding structure, a pipe sorting structure, an output structure, and a frame. The feeding structure includes a feeding chain and a feeding carrier connected to the frame. The feeding chain is flexible. The feeding carrier includes a U-shaped feeding frame. One end of the feeding frame is equipped with a feeding sprocket with rotational power, and another end of the feeding frame is also equipped with a dropping slope. One end of the feeding chain bypasses the feeding sprocket, allowing one end of the feeding chain to be synchronously driven by the feeding sprocket. The other end of the feeding chain is directly or indirectly connected to the other end of the feeding frame. The pipe sorting structure includes a sorting carrier and a sorting component with lifting power. The sorting carrier is equipped with a sorting slope and a sorting limiter. When the sorting component is lifted, it passes through the angle formed by the sorting slope and the sorting limiter. The dropping slope is connected to the sorting slope. The output structure is connected to the output end of the sorting limiter.

[0006] The present invention achieves the following effect: it can store multiple steel pipes and output them one by one in sequence, with low labor intensity and high efficiency.

[0007] A further technical solution includes a feeding sprocket connected to a feeding power device with a motor; the feeding structure also includes an overload protection structure, which includes a reversing sprocket and an elastic element that provides tension. The reversing sprocket is hinged to the other end of the feeding frame; the other end of the feeding frame is higher than the first end of the feeding frame; the other end of the feeding chain passes around the reversing sprocket, so that the other end of the feeding chain can synchronously drive the reversing sprocket and is lower than the reversing sprocket. The two ends of the elastic element are respectively connected to the other end of the feeding chain and the feeding carrier.

[0008] While ensuring that all steel pipes can be output from the feeding chain between the two ends of the feeding frame, it is possible to prevent overload of the motor-driven feeding power unit.

[0009] A further technical solution includes an overload protection limiter and an overload protection guide bar with a limit protrusion. The overload protection limiter is fixed to the other end of the feeding frame, and the overload protection guide bar passes through the overload protection limiter. The elastic element is connected to the other end of the feeding chain through the overload protection guide bar. When the limit protrusion abuts against the overload protection limiter, the elastic element provides tension.

[0010] It can prevent elastic components from failing due to long-term stretching; it can also prevent overload of the power unit for feeding the motor.

[0011] A further technical solution involves setting a distributing angle between the top of the distributing component and the top of the distributing limiting body.

[0012] It can ensure that the steel pipe lifted by the distributed parts passes through the distribution limit body, and has high reliability.

[0013] Further technical solutions also include a ground rail, a lifting structure, and a feeding car equipped with a feeding cantilever. The feeding car is mounted on the ground rail and can move along the ground rail. One end of the feeding cantilever is suspended in the air. There are multiple feeding structures and pipe distribution structures. The distribution carrier and the feeding carrier are fixedly connected one-to-one. Multiple feeding structures are set along the ground rail. The lifting structure is connected to the feeding carrier so that the feeding carrier can be raised and lowered.

[0014] It can automatically load multiple steel pipes onto the feeding chain; it can also prevent multiple steel pipes from falling and colliding.

[0015] A further technical solution includes a lifting structure comprising a lifting chain, a lifting power device, and a lifting sprocket hinged to the feeding carrier; the lifting power device is a motor installed on the feeding carrier, and the rotational output end of the lifting power device is fixedly connected to the lifting sprocket, while the feeding carrier is linearly slidably connected to the frame; one end of the lifting chain is fixedly connected to the feeding carrier, and the other end of the lifting chain is connected to a heavy object, with the lifting chain bypassing the lifting sprocket so that it can be synchronously driven by the lifting sprocket.

[0016] Using the same motor can improve the reliability of the lifting power device.

[0017] A further technical solution involves a feeding chain groove in the middle of the feeding frame, with a portion of the feeding chain between the two ends of the distribution limit body located within the feeding chain groove.

[0018] This can improve the reliability of steel pipes by avoiding adhesion between them and their upstream components.

[0019] A further technical solution includes an output structure comprising multiple output wheels, each hinged to a distribution carrier; the tops of the multiple distribution limiters and the multiple output wheels are all arranged along an inclined straight line in the direction of the ground rail.

[0020] No power needs to be supplied to the output structure; a single steel pipe can output power directly from the output structure, making it relatively energy-efficient.

[0021] A further technical solution also includes multiple adjustment structures. Each adjustment structure includes an adjustment component equipped with an adjustment power device and an adjustment stop. The adjustment power device is fixed on the distribution carrier and its output end is connected to the adjustment component, so that the adjustment stop can move along the distribution slope. The height of each adjustment stop is equal and is less than the height of the lowest distribution limit body.

[0022] It is a steel pipe that can be used for various pipe diameters, has high versatility, and can also improve reliability.

[0023] A further technical solution also includes a rotating linkage rod, multiple dispensing components, and a one-to-one correspondence between the dispensing components and the dispensing limiters; each dispensing component is provided with a rack, and the rotating linkage rod is provided with multiple gears, each gear meshing with a rack, and the pitch circle circumference of each gear increases linearly, with the lower dispensing limiter corresponding to the smaller gear pitch circle circumference.

[0024] The tilt angle of the steel pipe gradually increases as it is lifted by multiple distribution components, thus ensuring that the steel pipe is pushed to the top of the distribution limit body. Attached Figure Description

[0025] Figure 1 This is a perspective view of the automatic feeding device for a steel pipe drawing machine according to an embodiment of the present invention. Figure 1 .

[0026] Figure 2 This is a perspective view of the automatic feeding device for a steel pipe drawing machine according to an embodiment of the present invention. Figure 2 .

[0027] Figure 3 This is a side view schematic diagram of the automatic feeding device of the steel pipe drawing machine according to an embodiment of the present invention.

[0028] Figure 4 This is a three-dimensional schematic diagram of the feeding structure 1 according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of DTL1 in detail one.

[0030] Figure 6 This is a top view schematic diagram of the automatic feeding device of the steel pipe drawing machine according to an embodiment of the present invention.

[0031] Figure 7This is a schematic diagram of section SEC1; arrow ARR1 indicates the direction of the upward movement of the middle of the feeding chain 12 during feeding.

[0032] Figure 8 This is a schematic diagram of section SEC2; arrow 2 ARR2 indicates the direction in which the distribution piece 22 rises when the distribution steel pipe 9 is distributed.

[0033] Figure 9 This is a schematic diagram of section 3 SEC3; arrow 3 ARR3 indicates the direction of the back-and-forth movement of the adjusting stop 311 during adjustment.

[0034] Figure 10 This is a three-dimensional schematic diagram of the pipe distribution structure 2 according to an embodiment of the present invention.

[0035] Detail 1: DTL1; Arrow 1: ARR1; Arrow 2: ARR2; Arrow 3: ARR3; Section 1: SEC1; Section 2: SEC2; Section 3: SEC3; Feeding Structure 1; Feeding Carrier 11; Dropping Incline 111; Feeding Frame 112; Feeding Chain Groove 113; Feeding Chain 12; Feeding Sprocket 121; Feeding Power Unit 129; Overload Protection Structure 13; Reversing Sprocket 131; Elastic Component 132; Overload Protection Limiting Body 133; Overload Protection Directional Rod 134; Limiting Protrusion 135; Pipe Dividing Structure 2; Dividing Carrier 21; Dividing Incline 2 11; Distributor limit body 212; Distributor angle 213; Linear guide rail 219; Distributor component 22; Distributor power unit 229; Adjustment structure 3; Adjustment component 31; Adjustment stop 311; Adjustment power unit 319; Lifting structure 4; Lifting chain 41; Lifting sprocket 42; Weight 421; Lifting power unit 429; Rotary linkage rod 5; Rack 51; Gear 52; Output structure 6; Output wheel 61; Output stop 62; Frame 7; Lifting guide groove 71; Lifting guide wheel 72; Feeding trolley 8; Feeding cantilever 81; Ground rail 89; Steel pipe 9. Detailed Implementation

[0036] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0037] As a specific embodiment, the automatic feeding device for the steel pipe drawing machine of the present invention includes a feeding structure 1, a pipe sorting structure 2, an output structure 6, and a frame 7.

[0038] The feeding structure 1 includes a feeding chain 12 and a feeding carrier 11 connected to the frame 7.

[0039] The feeding chain 12 is flexible. Typically, the feeding chain 12 is a chain, but it can also be a timing belt, etc.

[0040] The feeding carrier 11 includes a feeding frame 112 that is U-shaped. The U-shape refers to the shape where the middle is lower and both ends are higher than the middle when viewed from the side.

[0041] One end of the feeding frame 112 is provided with a feeding sprocket 121 with rotational power, and the other end of the feeding frame 112 is also provided with a discharge ramp 111.

[0042] One end of the feeding chain 12 bypasses the feeding sprocket 121, allowing one end of the feeding chain 12 to be synchronously driven by the feeding sprocket 121. The other end of the feeding chain 12 is directly or indirectly connected to the other end of the feeding frame 112. The fact that one end of the feeding chain 12 can be synchronously driven by the feeding sprocket 121 means that the linear velocities of the feeding chain 12 and the feeding sprocket 121 are always equal; in other words, the feeding chain 12 will not slip when driven by the feeding sprocket 121. It is easy to understand that there is an overlap between the feeding frame 112 and the feeding chain 12 when viewed from above. Typically, a weight 421 is suspended from the other end of the feeding sprocket 121.

[0043] The pipe distribution structure 2 includes a distribution carrier 21 and a distribution component 22 with lifting power.

[0044] The distribution carrier 21 is provided with a distribution ramp 211 and a distribution limit body 212. When the distribution component 22 is raised or lowered, it passes through the angle formed by the distribution ramp 211 and the distribution limit body 212. It is easy to understand that the distribution ramp 211 causes the steel pipe 9 located on it to tend to move closer to the distribution limit body 212.

[0045] The material discharge ramp 111 is connected to the distribution ramp 211. Typically, the material discharge ramp 111 and the distribution ramp 211 are located in the same plane.

[0046] The output structure 6 is connected to the output end of the dispensing limit body 212.

[0047] The working principle is as follows: before use, the feeding sprocket 121 is rotated in the opposite direction to extend the feeding chain 12 between the two ends of the feeding frame 112, and then multiple steel pipes 9 are loaded onto the feeding chain 12. At this time, the multiple steel pipes 9 are supported by the feeding frame 112 and / or the feeding chain 12 and held within the feeding frame 112.

[0048] like Figure 7 As shown, the forward rotation of the feeding sprocket 121 shortens the feeding chain 12 between the two ends of the feeding frame 112. The feeding chain 12 lifts multiple steel pipes 9 until a steel pipe 9 is higher than the top of the dropping slope 111 and then slides down from the dropping slope 111 to the sorting slope 211 in sequence until the steel pipe 9 is blocked by the sorting limit body 212. At this time, the steel pipe 9 are arranged in a row on the dropping slope 111 and the sorting slope 211.

[0049] like Figure 8As shown, the distributor 22 periodically pulls the steel pipe 9 closest to the distributor limit body 212 until it passes the distributor limit body 212. After the steel pipe 9 passes the distributor limit body 212 and is output onto the output structure 6, the output structure 6 outputs the steel pipe 9 from the next drawing process. Typically, the top of the distributor limit body 212 is provided with an inclined surface that slopes towards the output structure 6.

[0050] As can be seen from the above, the automatic feeding device for the steel pipe drawing machine in the embodiment of the present invention can store multiple steel pipes 9 and output them one by one in sequence, with low labor intensity and high efficiency.

[0051] As one specific implementation, the feeding sprocket 121 is connected to a feeding power device 129 powered by a motor; the feeding structure 1 also includes an overload protection structure 13, which includes a reversing sprocket 131 and an elastic element 132 providing tension. The reversing sprocket 131 is hinged to the other end of the feeding frame 112; the other end of the feeding frame 112 (the end where the reversing sprocket 131 is located) is higher than the other end of the feeding frame 112 (the end where the feeding sprocket 121 is located); the other end of the feeding chain 12 passes around the reversing sprocket 131, so that the other end of the feeding chain 12 can synchronously drive the reversing sprocket 131 and is lower than the reversing sprocket 131. The two ends of the elastic element 132 are respectively connected to the other end of the feeding chain 12 and the feeding carrier 11. For example, the elastic element 132 is a spring. The feeding power unit 129 drives the feeding sprocket 121 to rotate forward, causing the feeding chain 12 between the two ends of the feeding frame 112 to shorten until it is approximately a straight line (all the steel pipes 9 can roll on the feeding chain 12 between the two ends of the feeding frame 112, ensuring that all the steel pipes 9 can be output from the feeding chain 12 between the two ends of the feeding frame 112). The feeding power unit 129 may continue to rotate for a period of time due to inertia, control time difference, and other factors; the elastic force provided by the elastic element 132 allows the feeding power unit 129 to continue rotating, thereby preventing the feeding power unit 129 to be overloaded. In other words, while ensuring that all the steel pipes 9 can be output from the feeding chain 12 between the two ends of the feeding frame 112, the feeding power unit 129 to be overloaded can be prevented. Typically, the motor is equipped with a reducer and is a geared motor.

[0052] As one specific implementation, the feeding structure 1 also includes an overload protection limiting body 133 and an overload protection guide rod 134 with a limiting protrusion 135. The overload protection limiting body 133 is fixed to the other end of the feeding frame 112, and the overload protection guide rod 134 passes through the overload protection limiting body 133. The elastic element 132 is connected to the other end of the feeding chain 12 through the overload protection guide rod 134. When the limiting protrusion 135 abuts against the overload protection limiting body 133, the elastic element 132 provides tension. When a large number of steel pipes 9 are placed on the feeding chain 12 between the two ends of the feeding frame 112, the limiting protrusion 135 abuts against the overload protection limiting body 133. At this time, the limiting protrusion 135 mainly bears the steel pipes 9, which can prevent the elastic element 132 from being stretched for a long time and failing. When a large number of steel pipes 9 are output, and the number of steel pipes 9 decreases until the tension provided by the elastic element 132 causes the limiting protrusion 135 to separate from the overload protection limiting body 133, it can also prevent the feeding power device 129 of the motor from being overloaded. Usually, one end of the elastic element 132 is connected to the feeding carrier 11 through a screw to adjust the elastic force of the elastic element 132. Usually, the overload protection rod 134 fits against the overload protection limiting body 133 to achieve guidance.

[0053] As one specific implementation method, a distributing angle 213 is provided between the top end of the distributing component 22 and the top end of the distributing limiting body 212. This ensures that the steel pipe 9 lifted by the distributing component 22 passes over the distributing limiting body 212, resulting in high reliability.

[0054] As one specific implementation method, the automatic feeding device for the steel pipe drawing machine in this embodiment of the invention further includes a ground rail 89, a lifting structure 4, and a feeding trolley 8 equipped with a feeding cantilever 81. The feeding trolley 8 is mounted on the ground rail 89 and can move along the ground rail 89. Figure 7As shown, one end of the feeding cantilever 81 is suspended in the air; there are multiple feeding structures 1 and multiple pipe distribution structures 2, with distribution carriers 21 and feeding carriers 11 fixedly connected one-to-one, and multiple feeding structures 1 are set along the ground rail 89; the lifting structure 4 is connected to the feeding carrier 11 so that the feeding carrier 11 can be raised and lowered. Multiple steel pipes 9 are placed on the feeding cantilever 81, and then the lifting structure 4 drives the feeding carrier 11 to descend until the entire feeding frame 112 is lower than the feeding cantilever 81. The feeding car 8 is moved along the ground rail 89 until there is an overlap between the feeding car 8 and the multiple feeding structures 1 in the direction along the ground rail 89; at this time, the feeding frame 112 is located below the feeding cantilever 81. Then, the lifting structure 4 drives the feeding carrier 11 to rise, and the feeding chain 12 and / or the feeding frame 112 lifts the multiple steel pipes 9 until all the multiple steel pipes 9 are separated from the feeding cantilever 81, that is, the multiple steel pipes 9 can be automatically loaded onto the feeding chain 12; and compared with the multiple steel pipes 9 being tilted onto the feeding chain 12, it can avoid the feeding chain 12 from breaking due to the impact of the multiple steel pipes 9 falling, and it can also prevent the feeding chain 12 from driving the feeding sprocket 121 to rotate due to the impact of the multiple steel pipes 9 falling, causing damage to the lifting power device 429 of the motor or the reducer on the lifting power device 429; in other words, it can also prevent the feeding chain 12 from falling and impacting the multiple steel pipes 9.

[0055] As one specific implementation, the lifting structure 4 includes a lifting chain 41, a lifting power device 429, and a lifting sprocket 42 hinged to the loading carrier 11. The lifting power device 429 is a motor installed on the loading carrier 11. The rotational output end of the lifting power device 429 is fixedly connected to the lifting sprocket 42. The loading carrier 11 is linearly slidably connected to the frame 7. For example, the frame 7 is provided with a lifting guide groove 71, and the loading carrier 11 is provided with a lifting guide wheel 72 located in the lifting guide groove 71, thereby realizing a linear sliding connection between the loading carrier 11 and the frame 7. The direction of this linear sliding connection can be vertical or inclined. One end of the lifting chain 41 is fixedly connected to the loading carrier 11, and the other end of the lifting chain 41 is connected to a weight 421. The lifting chain 41 passes around the lifting sprocket 42 so that it can be synchronously driven by the lifting sprocket 42. When multiple steel pipes 9 are loaded into the loading frame 112, the lifting power device 429 rotates forward and drives the loading carrier 11 and the multiple steel pipes 9 to rise as a whole through the lifting sprocket 42. The weight of the load 421 pulls the loading carrier 11 upward, thereby reducing the torque required for the lifting power device 429 to rotate forward. When the multiple steel pipes 9 are output from the loading frame 112, the lifting power device 429 rotates in the reverse direction to lower the loading carrier 11. The lifting power device 429 can overcome the torque generated by the weight of the load 421 (the maximum torque provided by a typical motor in both forward and reverse rotation is roughly the same); therefore, the weight of the load 421 is usually roughly equal to half the sum of the weight of the loading structure 1 and the weight of the multiple steel pipes 9. As can be seen from the above, the reliability of the lifting power device 429 can be improved by using the same motor (with the same torque redundancy).

[0056] As one specific implementation, a feeding chain groove 113 is provided in the middle of the feeding frame 112, and a portion of the feeding chain 12 between the two ends of the distribution limiting body 212 is located within the feeding chain groove 113. During the process of the lifting structure 4 driving the feeding carrier 11 to rise, a portion of the multiple steel pipes 9 is first held by the feeding chain 12 between the two ends of the feeding frame 112, and then a portion is held by the middle of the feeding frame 112. This ensures that the steel pipes 9 inside the multiple steel pipes 9 will undergo displacement or increase the amount of displacement, thereby avoiding the steel pipes 9 from sticking together due to upstream components, thus improving reliability.

[0057] As one specific implementation, the output structure 6 includes multiple output wheels 61, each hinged to a distributing carrier 21; typically, each distributing carrier 21 is also fixedly provided with an output stop 62; such as Figure 3 As shown, the tops of multiple distribution limiters 212 and multiple output wheels 61 are all arranged along an inclined straight line in the direction of the ground rail 89. No power needs to be supplied to the output structure 6; a single steel pipe 9 can be output from the output structure 6, which is relatively energy-efficient.

[0058] As one specific implementation method, it also includes multiple adjustment structures 3. Each adjustment structure 3 includes an adjustment member 31 equipped with an adjustment power device 319 and an adjustment stop 311. The adjustment power device 319 is fixed to the distribution carrier 21, and its output end is connected to the adjustment member 31, allowing the adjustment stop 311 to move along the distribution ramp 211. The heights of each adjustment stop 311 are equal and all less than the height of the lowest distribution limit body 212. It is easy to understand that because the output wheels 61 are all arranged along an inclined straight line in the direction of the ground rail 89, the heights of the multiple distribution limit bodies 212 are also arranged sequentially from high to low. When the diameter of the steel pipe 9 changes (e.g., due to changes in production needs), such as when it becomes smaller, the adjusting power device 319 drives the adjusting component 31 to move, causing the adjusting stop 311 to approach the discharge ramp 111 and exceed the distributing limit body 212. This ensures that the distributing component 22 corresponds to only one steel pipe 9, and the rising of the distributing component 22 can only lift one steel pipe 9, thus enabling it to be used with steel pipes of various diameters and providing high versatility. In addition, during the process of the distributing component 22 lifting the steel pipe 9, one end of the steel pipe 9 first passes the lowest distributing limit body 212, and the other end of the steel pipe 9 last passes the highest distributing limit body 212; in other words, when viewed from above, the steel pipe 9 enters the output structure 6 at an angle, which improves reliability.

[0059] As one specific implementation method, it also includes a rotating linkage 5, each feeding sprocket 121, and / or each lifting sprocket 42 are connected by the rotating linkage 5 and can rotate synchronously. This ensures that the actions of multiple feeding structures 1 are synchronized. There are multiple distributing components 22, each distributing component 22 corresponding to a distributing limit body 212. Each distributing component 22 is provided with a rack 51, and the rotating linkage 5 is provided with multiple gears 52. Each gear 52 meshes with the rack 51 to convert linear motion into rotational motion. It can be seen that multiple distributing components 22 are linked by connecting multiple gears 52 through the rotating linkage 5 (the same applies to multiple adjusting components 31). The pitch circle circumference of each gear 52 increases linearly (linearly increasing means that the difference between the pitch circle circumferences of two adjacent gears 52 is non-linear and not constant, similar to acceleration. For example, the pitch circle circumferences of each gear 52 are 10, 2, and 2 respectively). 0, 40, 70, 110 mm, the difference in the pitch circle circumference of two adjacent gears 52 is 10, 20, 30, 40 mm respectively, the lower distribution limit body 212 corresponds to the smaller pitch circle circumference of the gear 52; under the premise that each gear 52 is driven to rotate by the rotating linkage 5 and has the same angular velocity, the lifting stroke of the rack 51 meshing with each gear 52 also increases linearly, so that the tilt angle of the steel pipe 9 gradually increases during the process of being lifted by multiple distribution parts 22, and one end of the steel pipe 9 can pass the top of the distribution limit body 212 before the other end, thereby ensuring that the steel pipe 9 is lifted to the top of the distribution limit body 212.

[0060] The terms used in this invention, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are merely for distinction.

[0061] In this invention, terms such as "a," "an," etc., do not indicate a limitation on the quantity, but rather indicate the existence of at least one of the mentioned objects.

[0062] In this invention, terms indicating orientation or location such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0063] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that are present but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context; for example, for deviations in dimensions, the specific context may include, but is not limited to, national standards for dimensional tolerances.

Claims

1. An automatic feeding device for a steel pipe drawing machine, comprising a feeding structure (1), a pipe sorting structure (2), an output structure (6), and a frame (7); the feeding structure (1) comprises a feeding chain (12) and a feeding carrier (11) connected to the frame (7); the feeding chain (12) is flexible; Its characteristic is that the feeding process is... The carrier (11) includes a U-shaped feeding frame (112); one end of the feeding frame (112) is provided with a feeding sprocket (121) with rotational power, and the other end of the feeding frame (112) is also provided with a dropping slope (111); one end of the feeding chain (12) passes around the feeding sprocket (121), so that one end of the feeding chain (12) can be synchronously driven by the feeding sprocket (121); the other end of the feeding chain (12) is directly or indirectly connected to the other end of the feeding frame (112); the pipe distribution structure (2) includes a distribution carrier ( 21) and a distributing component (22) with lifting power; the distributing carrier (21) is provided with a distributing ramp (211) and a distributing limit body (212), and the distributing component (22) passes through the angle formed by the distributing ramp (211) and the distributing limit body (212) when it is lifted; the dropping ramp (111) is connected to the distributing ramp (211); the output structure (6) is connected to the output end of the distributing limit body (212); the feeding sprocket (121) is connected to a feeding power device (129) for a motor; the feeding structure (1) also includes an overload protection structure. The structure (13) includes a reversing sprocket (131) and an elastic element (132) that provides tension. The reversing sprocket (131) is hinged to the other end of the feeding frame (112). The other end of the feeding frame (112) is higher than one end of the feeding frame (112). The other end of the feeding chain (12) passes around the reversing sprocket (131), so that the other end of the feeding chain (12) can synchronously drive the reversing sprocket (131) and is lower than the reversing sprocket (131). The two ends of the elastic element (132) are respectively connected to the other end of the feeding chain (12) and the upper... The material carrier (11) is connected; the feeding structure (1) also includes an overload limit body (133) and an overload guide rod (134) with a limit protrusion (135). The overload limit body (133) is fixed on the other end of the feeding frame (112). The overload guide rod (134) passes through the overload limit body (133). The elastic element (132) is connected to the other end of the feeding chain (12) through the overload guide rod (134). When the limit protrusion (135) abuts against the overload limit body (133), the elastic element (132) provides tension.

2. The automatic feeding device for the steel pipe drawing machine according to claim 1, characterized in that, A distributing angle (213) is provided between the top of the distributing component (22) and the top of the distributing limit body (212).

3. The automatic feeding device for the steel pipe drawing machine according to claim 1, characterized in that, It also includes a ground rail (89), a lifting structure (4), and a feeding car (8) equipped with a feeding cantilever (81). The feeding car (8) is set on the ground rail (89) and can move along the ground rail (89). One end of the feeding cantilever (81) is suspended in the air. There are multiple feeding structures (1) and pipe distribution structures (2). The distribution carrier (21) and the feeding carrier (11) are fixedly connected one-to-one. Multiple feeding structures (1) are set along the ground rail (89). The lifting structure (4) is connected to the feeding carrier (11) so that the feeding carrier (11) can be raised and lowered.

4. The automatic feeding device for the steel pipe drawing machine according to claim 3, characterized in that, The lifting structure (4) includes a lifting chain (41), a lifting power device (429), and a lifting sprocket (42) hinged to the loading carrier (11). The lifting power device (429) is a motor installed on the loading carrier (11). The rotation output end of the lifting power device (429) is fixedly connected to the lifting sprocket (42). The loading carrier (11) is linearly slidably connected to the frame (7). One end of the lifting chain (41) is fixedly connected to the loading carrier (11), and the other end of the lifting chain (41) is connected to a weight (421). The lifting chain (41) passes around the lifting sprocket (42) so that it can be synchronously driven by the lifting sprocket (42).

5. The automatic feeding device for a steel pipe drawing machine according to claim 3, characterized in that the feeding... A feeding chain groove (113) is provided in the middle of the frame (112), and the feeding chain (12) between the two ends of the distribution limit body (212) has a part located in the feeding chain groove (113).

6. The automatic feeding device for the steel pipe drawing machine according to claim 3, characterized in that, The output structure (6) includes multiple output wheels (61) which are respectively hinged to the distribution carrier (21); the tops of the multiple distribution limit bodies (212) and the multiple output wheels (61) are all arranged along an inclined straight line in the direction of the ground rail (89).

7. The automatic feeding device for a steel pipe drawing machine according to claim 6, characterized in that, It also includes multiple adjustment structures (3), each adjustment structure (3) including an adjustment member (31) provided with an adjustment power device (319) and an adjustment stop (311). The adjustment power device (319) is fixed on the distribution carrier (21) and its output end is connected to the adjustment member (31), so that the adjustment stop (311) can move along the distribution slope (211). The height of each adjustment stop (311) is equal and all are less than the height of the lowest distribution limit body (212).

8. The automatic feeding device for the steel pipe drawing machine according to claim 3, characterized in that, It also includes a rotating linkage rod (5), and multiple distribution parts (22), with each distribution part (22) corresponding to a distribution limit body (212). Each distribution part (22) is provided with a rack (51), and the rotating linkage rod (5) is provided with multiple gears (52). Each gear (52) meshes with the rack (51), and the pitch circle circumference of each gear (52) increases linearly. The lower distribution limit body (212) corresponds to the smaller pitch circle circumference of the gear (52).

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