A device for preventing damage to the outer surface of a steel pipe in a cold-drawing machine

Abstract

The utility model belongs to steel pipe cold-drawing production equipment technical field relates to a kind of cold-drawing machine steel pipe outer surface anti-damage device, comprising: cold-drawing machine main body, lifting material device, blanking receiving device and blanking collecting device, the lifting material device is located in the upstream of cold-drawing machine main body, the blanking receiving device is located below cold-drawing machine main body, the blanking collecting device is located downstream of blanking receiving device, it is characterized in that, the surface of lifting material device, blanking receiving device and blanking collecting device and steel pipe contact is equipped with guard plate;Buffering assembly is arranged on the blanking collecting device, and the buffering assembly is located at the feed end of blanking collecting device.It protects the damage of steel pipe outer surface due to direct friction with rack knock in the production process of cold-drawing steel pipe, ensures that finished steel pipe size is accurate and surface is smooth.

Description

Technical Field

[0001] This utility model belongs to the technical field of cold drawing production equipment for steel pipes, and relates to a device for preventing damage to the outer surface of steel pipes in a cold drawing machine. Background Technology

[0002] The cold drawing process for seamless steel pipes is a manufacturing technology that uses a cold drawing machine to perform multiple drawing processes on hot-rolled tube blanks to obtain seamless steel pipes with high-precision dimensions and a high-smooth surface finish. Its core characteristics are that the finished steel pipes have no weld seams, precise dimensions, and a high surface finish.

[0003] With the expanding applications of seamless steel pipes, the requirements for the surface quality of cold-drawn finished steel pipes are becoming increasingly stringent. However, on existing cold-drawing production lines, the outer surface of the steel pipes is damaged due to friction and collisions between the pipes and the machine frame. Furthermore, when the steel pipes roll into the collecting device, the significant height difference of the material frame in the collecting device easily causes impact damage to the outer surface of the steel pipes. Utility Model Content

[0004] Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a device for preventing damage to the outer surface of steel pipes in cold drawing machines. On the one hand, it solves the technical problem that the outer surface of steel pipes is damaged due to friction and collision between the steel pipe and the machine frame on the cold drawing production line. On the other hand, it solves the technical problem that when the steel pipe falls into the collecting device, the large depth of the collecting frame causes the steel pipe to fall too high, resulting in collision and other damage to the outer surface of the steel pipe.

[0005] Technical solution To achieve the above objectives, the main technical solutions adopted by this utility model include: A device for preventing damage to the outer surface of steel pipes in a cold drawing machine includes a cold drawing machine body, a material lifting device, a material feeding and receiving device, and a material collecting device. The material lifting device is located upstream of the cold drawing machine body, the material feeding and receiving device is located below the cold drawing machine, and the material collecting device is located downstream of the material feeding and receiving device.

[0006] The surfaces of the material lifting device, the material feeding and receiving device, and the material collecting device that come into contact with the steel pipe are all equipped with soft protective plates; a buffer assembly is installed on the material collecting device, and the buffer assembly is located at the feeding end of the material collecting device.

[0007] Furthermore, the buffer assembly includes a buffer rod and a counterweight; the buffer rod is rotatably mounted on the side wall of the feed end of the feeding and collecting device; one end of the buffer rod extends out of the outer edge of the collecting frame of the feeding and collecting device to form a blocking part, and the other end is fixedly connected to the counterweight; a soft protective plate is added to the blocking part of the buffer rod.

[0008] Furthermore, the buffer assembly includes a unidirectional rotary damper; the unidirectional rotary damper is fixedly installed on the side wall of the feed end of the feeding and collecting device; the rotating end of the unidirectional rotary damper is connected to the buffer rod.

[0009] Furthermore, a diversion device is provided at the feed end of the material collection device; the diversion device includes a mounting frame, a baffle rod, and a connecting rod; the mounting frame is fixed at the feed end; the mounting frame is provided with a square tube sleeve; the baffle rod is provided in the square tube sleeve and can move along the length direction of the square tube sleeve; a slide rail is provided at the bottom of the baffle rod perpendicular to the length direction of the baffle rod; one end of the connecting rod is hinged to the side of the buffer rod connected to the counterweight block, and the other end is connected to the slide rail at the bottom of the baffle rod.

[0010] Furthermore, the collection frame on the feed end side of the material collection device is provided with a gentle slope, and the horizontal angle of the gentle slope is 30°-45°.

[0011] Furthermore, a buffer plate is installed at the bottom of the collection frame of the material collection device.

[0012] Furthermore, a spring is installed at the bottom of the buffer plate, with the spring positioned near the side where the steel pipe rolls down.

[0013] Furthermore, the material lifting device includes a lifting baffle device; the lifting baffle device is disposed at the discharge end of the material lifting device; the lifting baffle device includes a cylinder and a baffle column; the cylinder is installed on the side wall of the material lifting device; the baffle column is installed on the telescopic end of the cylinder; a soft anti-scratch layer is provided on the baffle column.

[0014] Furthermore, the material feeding and receiving device includes a lifting receiving device and a conveyor chain; the lifting receiving device is located below the steel pipe outlet of the cold drawing machine; the conveyor chain is located below the lifting receiving device; and anti-scratch soft blocks are installed on the conveyor chain. An L-shaped soft protective plate is installed at the connection between the material feeding and receiving device and the material collecting device.

[0015] Furthermore, a material blocking device is installed on the material collection device; the material blocking device is located on the feeding end side of the material collection device; the material blocking device includes a blocking arm, a connecting rod and a cylinder 2; the connecting rod passes through the lower part of the feeding end of the material collection device, and the connecting rod can rotate along its own axis; the blocking arm is installed on the connecting rod; one end of the cylinder 2 is hinged to the blocking arm, and the other end is hinged to the material collection device.

[0016] Beneficial effects The beneficial effects of this utility model are: the cold-drawing machine steel pipe outer surface anti-damage device provided by this utility model mainly includes soft protective plates on the surfaces in contact with the steel pipe in the material lifting device, the material feeding and receiving device and the material collecting device, and a buffer component is set on the material collecting device to achieve the effect of avoiding damage to the outer surface of the steel pipe.

[0017] Specifically, for the material lifting device, soft protective plates are installed in the lifting frame, and a soft anti-scratch layer is wrapped around the baffle posts of the lifting device. For the unloading and conveying device, soft protective plates are installed on the lifting receiving device, anti-scratch soft blocks are installed on the conveyor chain, and L-shaped soft protective plates are installed at the connection between the unloading and conveying device and the unloading collection device. For the unloading collection device, soft protective plates are installed in the collection frame and on the baffle arm. This prevents the steel pipes from being damaged on the outer surface due to direct friction with the metal frame on the cold drawing production line. Simultaneously, a buffer assembly is installed on the unloading collection device so that when the steel pipe rolls down into the collection frame, it is slowed down by the buffer rod and guided to a gentle slope to slowly roll into the frame. This reduces the falling height of the steel pipes and uses a rolling method instead of a direct drop, avoiding impact damage.

[0018] Furthermore, a spring-loaded buffer plate is installed at the bottom of the collection box to further offset the impact force of the falling steel pipe on the bottom of the collection box. The spring-loaded buffer plate is designed with a single-sided spring structure, giving it a certain slope. This allows the steel pipe to roll naturally along the slope, preventing the spring from being compressed by the first falling steel pipe and thus reducing its cushioning performance. Therefore, it can better absorb the impact force of the falling steel pipe and avoid damage to the outer surface of the steel pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the positional relationship of the various devices in this utility model; Figure 2 This is a schematic structural diagram of the material collection device of this utility model; Figure 3 This is a schematic structural diagram of the buffer component and the current diversion component of this utility model; Figure 4 This is a schematic structural diagram of the material lifting device of this utility model; Figure 5 This is a schematic structural diagram of the material feeding and receiving device of this utility model; Figure 6 This is a schematic structural diagram of the material feeding and blocking device of this utility model; Figure 7 This is a schematic structural diagram of an embodiment of the material stop bar of this utility model; Figure 8 This is a schematic structural diagram of another embodiment of the material stop bar of this utility model; Figure 9 This is a schematic structural diagram of the L-shaped protective plate in the material feeding and conveying device of this utility model. Figure 10 This is a cross-sectional schematic diagram of the L-shaped protective plate in the material collection device of this utility model.

[0020] Explanation of reference numerals in the attached figures: 100: Cold drawing machine body; 200: Material lifting device; 300: Material feeding and receiving device; 400: Material collecting device; 500: Protective plate; 201: Lifting and stopping device; 2011: Stopping column; 2012: Cylinder 1; 2013: Stopping tube sleeve; 301: Lifting and receiving device; 302: Conveyor chain; 303: Anti-scratch soft block; 304: L-shaped protective plate; 3011: Lifting receiving plate; 3012: Linear guide rail; 3013: Lifting cylinder; 401: Collection box; 402: Buffer assembly; 403: Diversion assembly; 404: Material discharge stop device; 4021: One-way rotational damper; 4022: Buffer rod; 4023: Counterweight; 4025: Gentle slope; 4026: Buffer plate; 4027: Spring; 4031: Mounting base; 4032: Pipe sleeve; 4033: Material stop bar; 4034: Connecting rod; 4041: Stop arm; 4042: Connecting rod; 4043: Cylinder II; 4044: Connecting seat; 40331: Slide board; 40332: Sloping head; Detailed Implementation

[0021] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0022] This invention provides a device to prevent damage to the outer surface of steel pipes produced by a cold drawing machine. Protective plates are installed on the surfaces of the steel pipes that directly contact the material lifting device, feeding and receiving device, and feeding and collecting device, preventing scratches on the outer surface of the steel pipes due to direct friction with the machine frame throughout the cold drawing production line. Simultaneously, a buffer assembly is installed on the feeding and collecting device to prevent damage to the outer surface of the steel pipes caused by a large height difference between the feed end and the bottom of the collecting frame. Furthermore, a diversion assembly is installed in conjunction with the buffer assembly to ensure that multiple steel pipes produced in a single cold drawing process fall into the collecting frame one by one sequentially. Finally, a buffer plate is installed at the bottom of the collecting frame to further absorb the impact force of the falling steel pipes, preventing damage to the outer surface of the steel pipes.

[0023] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0024] Example 1 refer to Figure 1 This embodiment discloses a device for preventing damage to the outer surface of steel pipes in a cold drawing machine, which includes a cold drawing machine body 100, a material lifting device 200, a material feeding and receiving device 300, and a material collecting device 400. The material lifting device 200 is located upstream of the cold drawing machine body 100, the material feeding and receiving device 300 is located below the cold drawing machine 100, and the material collecting device 400 is located downstream of the material feeding and receiving device 300.

[0025] Furthermore, protective plates 500 are provided on the surfaces of the material lifting device 200, the material feeding and receiving device 300, and the material collecting device 400 that come into contact with the steel pipe. A buffer assembly 402 is also provided on the material collecting device 400, and the buffer assembly 402 is located at the feeding end of the material collecting device 400.

[0026] Furthermore, the buffer assembly 402 includes a buffer rod 4022 and a counterweight 4023. The buffer rod 4022 is rotatably mounted on the side wall of the feed end of the feeding collection device 400; one end of the buffer rod 4022 extends out of the outer edge of the collection frame 401 of the feeding collection device 400 to form a blocking part, and the other end is fixedly connected to the counterweight 4023; a protective plate 500 is added to the blocking part of the buffer rod 4022.

[0027] Furthermore, the buffer assembly includes a unidirectional rotary damper 4021, which is fixedly installed on the side wall of the feed end of the feeding and collecting device 400, and the rotating end of the unidirectional rotary damper 4021 is connected to the buffer rod 4022.

[0028] Specifically, the feeding end of the material collection device 400 has a mounting hole on its side wall, and a mounting groove at the bottom of the mounting hole. The selected unidirectional rotary damper 4021 has a mounting key at its bottom. The mounting key engages with the mounting groove to prevent the unidirectional rotary damper 4021 from slipping within the mounting hole. (Reference) Figure 2 The unidirectional rotary damper 4021 outputs high damping when the blocking part of the buffer rod 4022 rotates clockwise and low damping when it rotates counterclockwise.

[0029] Specifically, a mounting hole is provided in the middle part of the buffer rod 4022 for connection with the unidirectional rotation damper 4021. The distance from the mounting hole to the two ends of the buffer rod 4022 is different, with the shorter side connected to the counterweight 4023 and the longer side serving as a blocking part.

[0030] Specifically, the weight of the counterweight 4023 is calculated based on the weight of a single steel pipe and the lever arm ratio, so that a single steel pipe can press the buffer rod 4022 to rotate.

[0031] Furthermore, a diversion component 403 is provided at the feed end of the material collection device. The diversion component 403 includes a sleeve 4032, a baffle rod 4033, and a connecting rod 4034. The sleeve 4032 is located at the feed end, and its orientation is perpendicular to the rolling direction of the steel pipe. The baffle rod 4033 is located within the sleeve 4032 and can move along the length of the sleeve 4032. One end of the connecting rod 4034 is hinged to the side of the buffer rod 4022 connected to the counterweight 4023, and the other end is connected to the bottom of the baffle rod 4033.

[0032] Specifically, to ensure that the buffer assembly 402 transports only one steel pipe at a time, but the cold drawing machine delivers five steel pipes per production run, a diversion assembly 403 is required. (Reference) Figure 2 and Figure 3 The diversion component 403 is connected to the side wall of the feed end of the material collection device 400 via a mounting base. The diversion component 403 and the buffer component 402 are located on the same side, but to avoid interference during movement, a mounting base 4031 is provided to separate the diversion component 403 from the buffer component 402. This ensures that the buffer component 402 is against the side wall of the material collection device 300, while the diversion component 403 is located outside the buffer component 402. In this way, their movements do not interfere with each other, but they are connected by a connecting rod 4034 and operate in coordination.

[0033] Specifically, one end of the mounting base 4031 is connected to the side wall of the material collection device 400, and the sleeve 4032 is connected to the other end of the mounting base 4031. The baffle rod 4033 is set inside the sleeve 4032. To make the movement of the baffle rod 4033 smoother, a slide rail is provided between the baffle rod 4033 and the sleeve 4032.

[0034] Specifically, one end of the connecting rod 4034 is connected to the counterweight 4023 of the buffer rod 4022, and the other end is connected to the bottom of the stop rod 4033. A slide plate 40331 is set at the bottom of the stop rod 4033, allowing one end of the connecting rod 4034 to slide in the slide, preventing jamming during movement. The length and position of the connecting rod 4034 are designed according to the motion trajectory, so that when the blocking part of the buffer rod 4022 rotates downward, the connecting rod 4034 drives the stop rod 4033 to move upward, blocking the steel pipe and diverting the flow of the steel pipe.

[0035] Preferably, in order to achieve a better diversion effect, the position of the baffle rod 4033 should be such that when the first steel pipe begins to press down on the buffer rod 4022, the baffle rod 4033 can be raised to block the subsequent material pipe, and there will be no situation where two steel pipes press down on the buffer rod 4022 at the same time.

[0036] Preferred, Reference Figure 7 , Figure 8 When producing steel pipes of different diameters, the head of the baffle rod 4033 can be set with different shapes. When transporting large-diameter steel pipes, because the distance between the steel pipes is large, a round-headed baffle rod can be used. When transporting small-diameter steel pipes, because the distance between the steel pipes is small, a beveled head 40332 can be set on the baffle rod 4033 to achieve the function of diverting the steel pipes.

[0037] Furthermore, a gentle slope 4025 is provided in the collection frame 401 on the feeding end side of the material collection device 400, and the horizontal angle of the gentle slope 4025 is 30°-45°. In this embodiment, a gentle slope 4025 with a 40° angle is used.

[0038] Furthermore, the bottom of the collection frame 401 of the material collection device 400 is provided with a buffer plate 4026, and a spring 4027 is provided at the bottom of the buffer plate 4026. This allows it to absorb the impact force when the steel pipe rolls down, preventing damage to the outer surface of the steel pipe.

[0039] Furthermore, a spring 4027 is installed on one side of the bottom of the buffer plate 4026 in the direction perpendicular to the rolling of the steel pipe, so that the buffer plate 4026 makes an angle with the horizontal plane. After the steel pipe rolls in, it rolls along the buffer plate 4026 to the other side of the collection frame 401, preventing the spring 4027 from being compressed by the steel pipe and reducing the buffering performance. After the subsequent steel pipes gradually roll in and fill the bottom of the collection frame 401, the spring 4027 is compressed, but at this time the height difference of the rolling steel pipe has been reduced, so even if the spring 4027 no longer provides a buffering effect, it will not cause damage to the outer surface of the steel pipe.

[0040] For details, please refer to Figure 2 The buffer plate 4026 is "H"-shaped, with its two long ends located on either side of the material collection device 400, so that the buffer plate 4016 spans the bottom of the collection frame 401. This structure ensures that when the buffer plate 4016 forms a slope, its sharp edges will not collide with the steel pipe, and its two long ends can still receive the steel pipe in surface contact.

[0041] Further reference Figure 4The material lifting device 200 includes a lifting baffle device 201, which is located at the discharge end of the material lifting device 200. The lifting baffle device 200 includes a cylinder 2012 and a baffle column 2011. The cylinder 2012 is mounted on the side wall of the material lifting device 200, and the baffle column 2011 is mounted on the telescopic end of the cylinder 2012. An anti-scratch protective layer is provided on the baffle column 2011.

[0042] Specifically, the lifting and blocking device 201 can temporarily place the incoming steel pipe on the loading platform for a period of time, which also facilitates random inspection of the quality of the incoming steel pipe. The blocking column 2011 is installed in the blocking sleeve 2013, which is mounted on the side wall of the lifting device 200. The telescopic end of cylinder 2012 is connected to the bottom of the blocking column 2011. In use, the telescopic end of cylinder 2012 extends, and the blocking column 2011 extends accordingly, blocking the incoming steel pipe; when cylinder 2012 retracts, the blocking column 2011 falls, and the steel pipe can roll past. An anti-scratch protective layer is applied to the blocking column 2011 using an adhesive coating.

[0043] Further reference Figure 5 , Figure 9 and Figure 10 The material receiving and unloading device 300 includes a lifting receiving device 301 and a conveyor chain 302. The lifting receiving device 301 is located below the steel pipe outlet of the cold drawing machine body 100, and the conveyor chain 302 is located below the lifting receiving device 301. Anti-scratch soft blocks 303 are installed on the conveyor chain 302. An L-shaped protective plate 304 is installed at the connection between the material receiving and unloading device 300 and the material collecting device 400.

[0044] For details, please refer to Figure 5 The lifting receiving device 301 includes a lifting receiving plate 3011, a linear guide rail 3012, and a lifting cylinder 3013. The lifting receiving plate 3011 is mounted on the side where the conveyor chain 302 is located, with the linear guide rail 3012 perpendicular to the ground to ensure smooth and uninterrupted vertical movement of the lifting receiving plate 3011. The lifting cylinder 3013 is connected below the lifting receiving plate 3011 to drive its vertical movement.

[0045] Specifically, anti-scratch soft blocks 303 are installed on the conveyor chain 302 by means of rubber coating. The conveyor chain 302 is driven by sprockets to transport the steel pipes to the unloading and collecting device 400.

[0046] Specifically, an L-shaped protective plate 304 is installed at the junction of the material feeding and receiving device 300 and the material collecting device 400, i.e., on the side of the frame where the conveyor chain faces the material collecting device 400. (Reference) Figure 9 The L-shaped protective plate 304 is placed upside down on the frame, and the L-shaped protective plate 304 is set at a certain angle with the frame so that the steel pipe can roll smoothly.

[0047] Further reference Figure 6 A material discharge blocking device 404 is installed on the material collection device 400, and is located on the feed end side of the material collection device 400. The material discharge blocking device 404 includes a blocking arm 4041, a connecting rod 4042, and a cylinder 4043. The connecting rod 4042 passes through the lower part of the feed end of the material collection device 400 and can rotate along its own axis. The blocking arm 4041 is mounted on the connecting rod 4042. One end of the cylinder 4043 is hinged to the blocking arm 4041, and the other end is hinged to the material collection device 400. A protective plate 500 is installed on the blocking arm 4041.

[0048] Specifically, the material feeding and blocking device 404 is used for inspecting the finished steel pipes. The blocking arm 4041 is similar to an "L" shape, with its head mounted on a connecting rod 4042, which can rotate it. The lower middle part of the blocking arm 4041 is hinged to the telescopic end of cylinder 4043, and the bottom of cylinder 4043 is hinged to a connecting seat 4044, which is fixedly mounted on the material feeding and collecting device 400. In use, when cylinder 4043 retracts, the blocking arm 4041 falls; when cylinder 4043 extends, the blocking arm 4041 rises, blocking the steel pipe.

[0049] Specifically, in this embodiment, multiple sets of material lifting device 200, material feeding and conveying device 300, and material collecting device 400 are respectively provided, and all are arranged along the length of the steel pipe. Among them, a portion of the material collecting device 400 is equipped with a buffer component 402 and a diversion component 403, and another portion of the material collecting device 400 is equipped with a material blocking device 404. The two sets of devices can be distributed at intervals.

[0050] Preferably, the protective plate 500 can be made of nylon 6 or ultra-high molecular weight polyethylene.

[0051] Preferably, the protective plate 500 is detachably mounted on the frame by means of bolt connection.

[0052] This utility model provides a damage prevention device for the outer surface of steel pipes in a cold-drawing machine. During use, the steel pipe sequentially passes through a material lifting device, the main body of the cold-drawing machine, a feeding and conveying device, and a feeding and collecting device. Protective plates are installed on the surfaces in contact with the steel pipe in each of these devices, ensuring damage protection for the outer surface throughout the transfer process. In the cold-drawing machine, the steel pipe undergoes a cold-drawing process to achieve the required surface finish. Finally, the finished steel pipe falls into the feeding and collecting device. In this embodiment, the cold-drawing machine produces five finished steel pipes at a time, which roll sequentially to the feed end of the feeding and collecting device. The first steel pipe rolls down, pressing against a buffer rod. The buffer rod, via a connecting rod, causes a stop rod to rise, blocking subsequent steel pipes. At this point, the first steel pipe presses down on the buffer rod, and a one-way rotating damper outputs high damping, causing the buffer rod to drag the steel pipe slowly downwards until it rolls out of the buffer rod. The buffer rod is not pressed down by the weight of the steel pipe on one side, but by the weight of the counterweight on the other, causing the buffer rod to reset. At this time, the unidirectional rotary damper outputs low damping, and the buffer rod quickly resets. During the reset process, the connecting rod pulls the stop rod downward, releasing the second steel pipe to roll down, and subsequent steel pipes repeat this process. After rolling down the buffer rod, the first steel pipe rolls along the gentle slope to the buffer plate, where it presses down on the buffer plate, and the spring is compressed to absorb the impact. The steel pipe rolls from the higher part of the buffer plate to the lower part. Subsequent steel pipes gradually fall into the collection frame, and the spring remains compressed throughout. Although the spring's buffering capacity decreases somewhat, the height difference of the falling steel pipes is greatly reduced, preventing damage to the surface of the steel pipes.

[0053] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0054] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0055] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0056] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0057] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0058] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0059] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. A device for preventing damage to the outer surface of steel pipes from a cold-drawing machine, comprising a cold-drawing machine body (100), a material lifting device (200), a material feeding and receiving device (300), and a material collecting device (400), wherein the material lifting device (200) is located upstream of the cold-drawing machine body (100), the material feeding and receiving device (300) is located below the cold-drawing machine body (100), and the material collecting device (400) is located downstream of the material feeding and receiving device (300), characterized in that, The surfaces of the material lifting device (200), the material feeding and receiving device (300), and the material collecting device (400) that come into contact with the steel pipe are all provided with protective plates (500); a buffer assembly (402) is provided on the material collecting device (400), and the buffer assembly (402) is located at the feeding end of the material collecting device (400).

2. The anti-damage device for the outer surface of steel pipe in a cold-drawing machine according to claim 1, characterized in that, The buffer assembly (402) includes a buffer rod (4022) and a counterweight (4023); the buffer rod (4022) is rotatably mounted on the side wall of the feed end of the feeding collection device (400); one end of the buffer rod (4022) extends out of the outer edge of the collection frame (401) of the feeding collection device (400) to form a blocking part, and the other end is fixedly connected to the counterweight (4023); a protective plate (500) is installed on the side of the blocking part of the buffer rod (4022) that contacts the steel pipe.

3. The anti-damage device for the outer surface of a cold-drawn steel pipe according to claim 2, characterized in that, The buffer assembly (402) further includes a unidirectional rotary damper (4021); the unidirectional rotary damper (4021) is fixedly installed on the side wall of the feed end of the feeding collection device (400); the rotating end of the unidirectional rotary damper (4021) is connected to the buffer rod (4022).

4. The anti-damage device for the outer surface of a cold-drawn steel pipe according to claim 3, characterized in that, The feeding end of the feeding collection device (400) is provided with a diversion component (403); the diversion component (403) includes a sleeve (4032), a baffle rod (4033) and a connecting rod (4034); the sleeve (4032) is provided at the feeding end of the feeding collection device (400), and the sleeve (4032) is set in a direction perpendicular to the rolling direction of the steel pipe; the baffle rod (4033) is provided in the sleeve (4032) and can move along the length of the sleeve (4032); one end of the connecting rod (4034) is hinged to the side of the buffer rod (4022) connected to the counterweight (4023), and the other end is connected to the bottom of the baffle rod (4033).

5. The anti-damage device for the outer surface of steel pipe in a cold-drawing machine according to claim 4, characterized in that, The material collection device (400) has a gentle slope (4025) in the collection frame (401) on the feeding end side, and the horizontal angle of the gentle slope (4025) is 30°-45°.

6. The anti-damage device for the outer surface of a cold-drawn steel pipe according to claim 5, characterized in that, The bottom of the collection frame (401) of the feeding and collecting device (400) is provided with a buffer plate (4026).

7. The anti-damage device for the outer surface of a cold-drawn steel pipe according to claim 6, characterized in that, A spring (4027) is provided at the bottom of the buffer plate (4026), and the spring (4027) is located on the side near where the steel pipe rolls down.

8. A device for preventing damage to the outer surface of a cold-drawn steel pipe according to any one of claims 1-7, characterized in that, The material lifting device (200) includes a lifting baffle device (201); the lifting baffle device (201) is disposed at the discharge end of the material lifting device (200); the lifting baffle device (201) includes a cylinder (2012) and a baffle column (2011); the cylinder (2012) is installed on the side wall of the material lifting device (200); the baffle column (2011) is installed at the telescopic end of the cylinder (2012); the baffle column (2011) is provided with an anti-scratch protective layer.

9. A device for preventing damage to the outer surface of a cold-drawn steel pipe according to claim 8, characterized in that, The feeding and receiving device (300) includes a lifting receiving device (301) and a conveyor chain (302); the lifting receiving device (301) is located below the steel pipe outlet of the cold drawing machine body (100); the conveyor chain (302) is located below the lifting receiving device (301); anti-scratch soft blocks (303) are installed on the conveyor chain (301); an L-shaped protective plate (304) is provided at the connection between the feeding and receiving device (300) and the feeding collection device (400).

10. A device for preventing damage to the outer surface of a cold-drawn steel pipe according to claim 9, characterized in that, A material discharge blocking device (404) is installed on the material discharge collection device (400); the material discharge blocking device (404) is located on the feeding end side of the material discharge collection device (400); the material discharge blocking device (404) includes a blocking arm (4041), a connecting rod (4042) and a cylinder (4043); the connecting rod (4042) passes through the lower part of the feeding end of the material discharge collection device (400), and the connecting rod (4042) can rotate along its own axis; the blocking arm (4041) is installed on the connecting rod (4042); one end of the cylinder (4043) is hinged to the blocking arm (4041), and the other end is hinged to the material discharge collection device (400); a protective plate (500) is installed on the blocking arm (4041).

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