A sawing machine

Abstract

This utility model discloses a fixed-length sawing machine, comprising: a sawing head mounted on a frame and several straightening wheel sets; each straightening wheel set includes a wheel frame with two rows of spaced mounting slots, each mounting slot set including multiple mounting slots, and each of the multiple mounting slots having: a mounting seat movably disposed within the mounting slot, the mounting seat having a threaded hole and a shaft hole on the side of the mounting seat facing away from the wheel frame; a bolt threadedly connected to the wheel frame and screwed into the threaded hole; and a straightening roller including a wheel body and a shaft body, the wheel body being rotatably mounted on one end of the shaft body, and the other end of the shaft body being detachably mounted on the mounting seat. This allows for rapid replacement of the straightening wheels without disassembling the adjustment mechanism or repeating positioning; it significantly shortens the time for changing rollers, improves equipment utilization, reduces downtime, and thus increases production efficiency.

Description

Technical Field

[0001] This application relates to the field of metal processing technology, specifically to a fixed-length sawing machine. Background Technology

[0002] Most copper tubes are wound in coils on a cylinder. Before use, the copper tubes need to be straightened using a sawing machine with a straightening component, and then cut to a predetermined length by the cutting component.

[0003] In the copper tube production process, straightening is a crucial step in ensuring the straightness of the tubes. Traditional straightening machines apply rolling pressure to the copper tubes using paired straightening rollers to achieve straightening, as shown in patent CN221231985U, which employs an adjustable-spacing straightening roller assembly. However, over long-term operation, the straightening roller surfaces will develop dents or become out of round due to friction and wear, leading to decreased straightening accuracy and even scratching the copper tube surface. In such cases, the worn roller unit needs to be replaced, but the existing structure has significant drawbacks: the top pressure component must be completely loosened and removed before the adjusting block can be removed from the limiting mounting slot of the fixed plate, and then the roller unit can be disassembled. This process is time-consuming and severely affects the continuity of the production line. After reassembly, the clamping position of the top pressure component needs to be readjusted to calibrate the distance between the roller unit and the fixed roller unit. Manual calibration is prone to introducing errors (often ±0.5mm), resulting in uneven straightening force or poor ovality of the copper tubes. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a fixed-length sawing machine that enables rapid replacement of the straightening rollers without disassembling the adjustment mechanism or repeating positioning. The technical solution adopted includes: A fixed-length sawing machine includes: a sawing head mounted on a frame and a plurality of straightening wheel sets; each straightening wheel set includes a wheel frame, the wheel frame having two rows of spaced-apart mounting slots, each mounting slot set including multiple mounting slots, and each of the multiple mounting slots having: The mounting base is movably disposed in the mounting groove, and the mounting base is provided with a threaded hole, and the side of the mounting base opposite to the wheel frame is provided with a shaft hole; Bolts are threaded to the wheel frame and screwed into the threaded holes. A straightening roller includes a wheel body and a shaft body, wherein the wheel body is rotatably mounted on one end of the shaft body, and the other end of the shaft body is detachably mounted on the mounting base.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the other end of the shaft is provided with a flat surface, the mounting base is provided with a shaft hole that matches the other end of the shaft, and the end of the shaft with the flat surface is inserted into the shaft hole.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the mounting base is provided with a locking member, which is used to lock the shaft onto the mounting base.

[0007] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the side wall of the mounting base is provided with an insertion hole, the other end of the shaft is provided with an internal threaded hole, the locking member is provided with a threaded section, and the threaded section passes through the insertion hole and is installed in the internal threaded hole.

[0008] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the mounting base is provided with a mounting hole, a wear-resistant bushing is installed in the mounting hole, and the inner hole of the wear-resistant bushing constitutes the shaft hole.

[0009] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the wear-resistant shaft hole includes an outer ring and an inner ring, the outer ring is made of high carbon steel, and the inner ring is made of self-lubricating alloy.

[0010] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the two ends of the wear-resistant bushing are provided with double-lip dustproof oil seals.

[0011] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the outer ring is installed with an interference fit with the mounting hole.

[0012] The beneficial effects of this utility model are as follows: In this application, without changing the original position of the mounting base in the mounting groove and without restricting the position adjustment function of the bolts on the mounting base, the straightening roller can be replaced separately. This allows for quick replacement of the straightening roller without disassembling the adjustment mechanism or repeating the positioning. It greatly shortens the time for replacing the roller, improves the utilization rate of the equipment, reduces downtime, and thus improves production efficiency. It is highly practical for production scenarios that require frequent replacement of straightening rollers, such as the fixed-length sawing of large quantities of metal pipes and profiles. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the fixed-length sawing machine described in the embodiments of this application; Figure 2 This is a schematic diagram of the straightening wheel assembly described in the embodiments of this application; Figure 3 This is an exploded view of the straightening wheel assembly described in the embodiments of this application. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0017] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] Reference Figure 1-3 This application proposes an embodiment of a fixed-length sawing machine, which includes: a sawing head 20 mounted on a frame 10 and several straightening wheel sets 30; each straightening wheel set 30 includes a wheel frame 31, which has two rows of spaced mounting slots, each mounting slot set including multiple mounting slots 311, and each of the multiple mounting slots 311 having: Mounting base 32 is movably disposed in the mounting groove 311, and the mounting base is provided with threaded hole 321, and the mounting base 32 is provided with shaft hole 322 on the side opposite to the wheel frame 31; Bolt 33 is threaded to the wheel frame 31 and screwed into the threaded hole 321; The straightening roller 34 includes a wheel body 341 and a shaft body 342. The wheel body 341 is rotatably mounted on one end of the shaft body 342, and the other end of the shaft body 342 is detachably mounted on the mounting base 32.

[0019] The several straightening roller sets 30 on the frame 10 can straighten the pipe at different positions.

[0020] Without changing the original position of the mounting base 32 in the mounting groove 311, and without restricting the position adjustment function of the bolt 33 on the mounting base 32, the straightening roller 34 can be replaced separately. This allows for quick replacement of the straightening roller without disassembling the adjustment mechanism or repeating the positioning. It greatly shortens the time for replacing the roller, improves the utilization rate of the equipment, reduces downtime, and thus improves production efficiency. It is highly practical for production scenarios that require frequent replacement of the straightening roller 34, such as the fixed-length sawing of large quantities of metal pipes and profiles.

[0021] Preferably, the other end of the shaft 342 is provided with a flat surface 3421, and the mounting base 32 is provided with a shaft hole 322 that matches the other end of the shaft 342. The end of the shaft 342 with the flat surface 3421 is inserted into the shaft hole 322.

[0022] One end of the shaft 342 has a flat surface 3421 that inserts into the shaft hole 322 of the mounting base 32, which prevents circumferential displacement of the shaft 342 during rotation and ensures the normal operation of the straightening roller 34. The locking member 36 is connected to the internal threaded hole 343 of the shaft 342 by threads, which can effectively fix the shaft 342 on the mounting base 32, making the connection firm and easy to disassemble.

[0023] Referring to the accompanying drawings, in this embodiment, one or two planes 3421 can be designed at one end of the shaft 342 to achieve the positioning of the shaft 342.

[0024] Preferably, the mounting base 32 is provided with a locking member 36, which is used to lock the shaft 342 onto the mounting base 32.

[0025] When replacing the straightening roller 34, simply loosen the locking piece 36 to remove the old straightening roller 34 and its shaft 342. Then, insert the shaft 342 of the new straightening roller 34 into the shaft hole 322 and install it using the locking piece 36. There is no need to disassemble the entire adjustment mechanism or reposition the mounting base 32.

[0026] Specifically, the mounting base 32 has an insertion hole 323 on its side wall, and the other end of the shaft 342 has an internal threaded hole 343. The locking member 36 has a threaded section, which passes through the insertion hole 323 and is installed in the internal threaded hole 343.

[0027] Since the shaft 342 is inserted into and positioned in the shaft hole 322 through the plane 3421, the position of the internal threaded hole 343 is fixed each time the shaft 342 is inserted into the shaft hole 322. Therefore, the shaft 342 is locked by screwing the threaded section of the locking member 36 into the internal threaded hole 343. The shaft 342 can be removed and the straightening roller 34 can be replaced by unscrewing the internal threaded hole 343.

[0028] In this embodiment, the mounting base 32 is provided with a mounting hole 324, and a wear-resistant bushing 35 is installed in the mounting hole 324. The inner hole of the wear-resistant bushing 35 forms the shaft hole 322.

[0029] The shaft 342 of the straightening roller 34 mates with the shaft hole 322. After long-term use, wear may easily occur between the shaft 342 and the shaft hole 322, affecting the straightening effect of the straightening roller 34. Installing a wear-resistant bushing 35 on the mounting base 32 can reduce wear between the shaft 342 and the mounting base 32, extend the service life of the mounting base 32, and reduce equipment maintenance costs.

[0030] Specifically, the wear-resistant shaft hole 322 includes an outer ring 351 and an inner ring 352. The outer ring 351 is made of high carbon steel, and the inner ring 352 is made of a self-lubricating alloy.

[0031] The wear-resistant bushing 35 adopts a structure with an outer ring of 351 high-carbon steel and an inner ring of 352 self-lubricating alloy. It combines the high strength of high-carbon steel with the low friction characteristics of self-lubricating alloy, which can not only withstand large loads, but also reduce the frictional resistance when the shaft 342 rotates, thereby improving the operating efficiency of the equipment.

[0032] Preferably, the wear-resistant bushing 35 is provided with double-lip dustproof oil seals at both ends to achieve a seal between the outer ring 351 and the inner ring 352 of the wear-resistant bushing 35, preventing liquid or dust from entering.

[0033] The outer ring 351 is installed with an interference fit to the mounting hole 324. After the wear-resistant bushing 35 wears out, it can be replaced. The outer ring 351 and the inner ring 352 can be connected by screws, pins, retaining rings, or other components.

[0034] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A fixed-length sawing machine, characterized in that, include: A sawing head (20) and several straightening wheel sets (30) are mounted on a frame (10); the straightening wheel set (30) includes a wheel frame (31), and the wheel frame (31) is provided with two rows of spaced mounting slots, each mounting slot set including multiple mounting slots (311), and the multiple mounting slots (311) are respectively provided with: Mounting base (32) is movably disposed in the mounting groove (311), and the mounting base (32) is provided with a threaded hole (321), and the mounting base (32) is provided with a shaft hole (322) on the side away from the wheel frame (31). Bolt (33) is threaded to the wheel frame (31) and screwed into the threaded hole (321); The straightening roller (34) includes a wheel body (341) and a shaft body (342), wherein the wheel body (341) is rotatably mounted on one end of the shaft body (342), and the other end of the shaft body (342) is detachably mounted on the mounting base (32).

2. The fixed-length sawing machine according to claim 1, characterized in that, The other end of the shaft (342) is provided with a flat surface (3421), and the mounting base (32) is provided with a shaft hole (322) that matches the other end of the shaft (342). The end of the shaft (342) with the flat surface (3421) is inserted into the shaft hole (322).

3. The fixed-length sawing machine according to claim 2, characterized in that, The mounting base (32) is provided with a locking element (36), which is used to lock the shaft (342) onto the mounting base (32).

4. The fixed-length sawing machine according to claim 3, characterized in that, The mounting base (32) has a socket (323) on its side wall, and the shaft (342) has an internal threaded hole (343) at the other end. The locking member (36) has a threaded section, which passes through the socket (323) and is installed in the internal threaded hole (343).

5. The fixed-length sawing machine according to any one of claims 1-4, characterized in that, The mounting base (32) is provided with a mounting hole (324), and a wear-resistant bushing (35) is installed in the mounting hole (324). The inner hole of the wear-resistant bushing (35) forms the shaft hole (322).

6. The fixed-length sawing machine according to claim 5, characterized in that, The wear-resistant bushing (35) includes an outer ring (351) and an inner ring (352). The outer ring (351) is made of high carbon steel, and the inner ring (352) is made of a self-lubricating alloy.

7. The fixed-length sawing machine according to claim 6, characterized in that, The wear-resistant bushing (35) is provided with double-lip dustproof oil seals at both ends.

8. The fixed-length sawing machine according to claim 6, characterized in that, The outer ring (351) is installed with an interference fit to the mounting hole (324).

Images