Sizing rack

Abstract

The utility model provides a sizing machine frame, which belongs to the technical field of square tube forming and comprises a vertical frame, a lower roller mechanism, an upper roller mechanism, a left roller mechanism, a right roller mechanism and a lifting mechanism, and an upper sliding block is arranged on the vertical frame. The lower roller mechanism comprises a lower roller translation assembly, a lower roller shaft and a lower pressing roller; the lower roller translation assembly drives the lower pressing roller to horizontally move along the lower roller shaft; the upper roller mechanism comprises an upper roller translation assembly, an upper roller shaft and an upper pressing roller; the upper roller translation assembly drives the upper pressing roller to horizontally move along the upper roller shaft; the left roller mechanism comprises a left roller screw rod, a left roller translation nut and a left compression roller; the right roller mechanism comprises a right roller screw rod, a right roller translation nut and a right compression roller; a lifting rod of the lifting mechanism is connected with the upper sliding block, the lifting mechanism drives the upper roller mechanism and the left roller mechanism to ascend and descend, and the upper pressing roller, the left pressing roller, the lower pressing roller and the right pressing roller are staggered to form an extrusion forming space for forming the square pipe. And the sizing rack can accurately adjust the extrusion sizing space according to the square pipes of different specifications, and the square pipe forming precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of square tube extrusion molding, and particularly relates to a sizing machine frame. Background Art

[0002] The production of square tubes generally adopts direct cold rolling of steel strips. Due to the four angles of square steel tubes, they need to go through multiple processes such as steel strip feeding, steel strip leveling, rough forming, single-side forming, extrusion forming, welding, etc. The formed square tubes need to be sized to form the final product; the forming process is difficult, and each process must have a high degree of accuracy, otherwise it is difficult to ensure the dimensional accuracy of the final square tube.

[0003] At present, the square tube sizing roller pressing devices in direct squaring devices all have the problems of difficult adjustment of the extrusion space size and poor forming accuracy. Utility Model Content

[0004] The embodiment of the utility model provides a sizing machine frame, aiming to solve the problems in the prior art that the size of the extrusion space is difficult to adjust and the precision of the formed square tube is poor.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a sizing frame, comprising:

[0006] Two sets of vertical frames, each of which is provided with an upper sliding block;

[0007] The lower roller mechanism comprises a lower roller translation assembly, a lower roller shaft rotatably connected to the stand, and a lower pressure roller arranged on the lower roller shaft; the lower roller translation assembly drives the lower pressure roller to move horizontally along the lower roller shaft;

[0008] The upper roller mechanism comprises an upper roller translation assembly, an upper roller shaft rotatably connected to the stand, and an upper pressure roller arranged on the upper roller shaft; the upper roller translation assembly drives the upper pressure roller to move horizontally along the upper roller shaft; the upper roller mechanism is arranged on the upper slider;

[0009] A left roller mechanism, comprising a left roller screw, a left roller translation nut matched with the left roller screw, and a left pressure roller connected with the left roller translation nut; the left roller mechanism is arranged on the upper slider;

[0010] a right roller mechanism, comprising a right roller screw, a right roller translation nut matched with the right roller screw, and a right pressure roller connected with the right roller translation nut; the right roller mechanism is located above the left roller mechanism; and

[0011] A lifting mechanism is arranged on the vertical frame, and a lifting rod of the lifting mechanism is connected to the upper slider. The lifting mechanism drives the upper roller mechanism and the left roller mechanism to rise and fall. The upper pressure roller, the left pressure roller, the lower pressure roller and the right pressure roller are staggered to form an extrusion and shaping space for shaping the square tube.

[0012] In one feasible manner, the lower roller translation assembly includes a lower roller screw and a lower roller translation nut threaded on the lower roller screw; a lower connecting sleeve is keyed on the lower roller shaft, a lower bearing seat is rotatably connected to the lower connecting sleeve, the lower bearing seat is connected to the lower roller translation nut, and the lower pressure roller is keyed to the lower connecting sleeve; the structure of the upper roller translation assembly is the same as that of the lower roller translation assembly.

[0013] In one achievable manner, a matching hole for matching with the lower roller translation nut is provided on the lower bearing seat, and the lower bearing seat and the lower roller translation nut are fastened and connected by bolts.

[0014] In one achievable manner, a limiting shoulder is provided at one end of the lower connecting sleeve, and a limiting step axially abutting against the limiting shoulder is provided in the axial hole of the lower pressure roller.

[0015] In one achievable manner, a support plate is provided on the left roller translation nut, a left roller shaft is provided on the support plate, and the left pressure roller is rotatably connected to the left roller shaft.

[0016] In one achievable manner, a top screw is provided between the left roller and the support plate.

[0017] In one achievable manner, the lifting mechanism is a worm gear lifting structure.

[0018] In one achievable manner, a connecting shaft is provided between the two lifting mechanisms.

[0019] In one achievable manner, a pull rod is provided between the stands.

[0020] Compared with the prior art, the sizing machine frame provided by the utility model has the beneficial effects that the lower pressure roller, the left pressure roller, the right pressure roller and the upper pressure roller can all be translated in the horizontal direction, and the left pressure roller and the upper pressure roller can be raised and lowered in the up and down directions, so that the extrusion shaping space can be accurately adjusted according to square tubes of different specifications, thereby improving the forming accuracy of the square tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a sizing frame provided in an embodiment of the utility model;

[0022] Figure 2 for Figure 1The right side structural diagram of the sizing rack provided;

[0023] Description of reference numerals:

[0024] 1. Stand; 2. Left pressure roller; 3. Left roller translation nut; 4. Left roller screw; 5. Support plate; 6. Upper slider; 7. Upper roller screw; 8. Lifting rod; 9. Lifting mechanism; 10. Upper roller shaft; 11. Right pressure roller; 12. Right roller screw; 13. Top screw; 14. Lower pressure roller; 15. Lower roller shaft; 16. Lower connecting sleeve; 17. Lower bearing seat; 18. Lower roller screw; 19. Extrusion molding space; 20. Upper pressure roller; 21. Connecting shaft; 22. Pull rod. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Please also read Figure 1 and Figure 2 The sizing frame provided by the utility model is now described. The sizing frame includes two sets of vertical frames 1, a lower roller mechanism, an upper roller mechanism, a left roller mechanism, a right roller mechanism and a lifting mechanism 9. The vertical frame 1 is provided with an upper slider 6. The vertical frame 1 is provided with a slide rail for the upper slider 6 to slide up and down. The slide rail can be only a vertical plane or a vertical step surface.

[0027] The lower roller mechanism includes a lower roller translation assembly, a lower roller shaft 15 rotatably connected to the stand 1, and a lower pressure roller 14 arranged on the lower roller shaft 15; the lower roller translation assembly drives the lower pressure roller 14 to move horizontally along the lower roller shaft 15; the upper roller mechanism includes an upper roller translation assembly, an upper roller shaft 10 rotatably connected to the stand 1, and an upper pressure roller 20 arranged on the upper roller shaft 10; the upper roller translation assembly drives the upper pressure roller 20 to move horizontally along the upper roller shaft 10; the upper roller mechanism is arranged on the upper slider 6; the left roller mechanism includes a left roller screw 4, a left roller translation nut 3 matched with the left roller screw 4, and And the left pressure roller 2 connected to the left roller translation nut 3; the left roller mechanism is arranged on the upper slider 6; the right roller mechanism includes a right roller screw 12, a right roller translation nut matched with the right roller screw 12 and a right pressure roller 11 connected to the right roller translation nut; the right roller mechanism is located above the left roller mechanism; the lifting mechanism 9 is arranged on the stand 1, the lifting rod 8 of the lifting mechanism 9 is connected to the upper slider 6, the lifting mechanism 9 drives the upper roller mechanism and the left roller mechanism to rise and fall, and the upper pressure roller 20, the left pressure roller 2, the lower pressure roller 14 and the right pressure roller 11 are staggered to form an extrusion and molding space 19 for the molded square tube.

[0028] Compared with the prior art, the sizing machine frame provided by the utility model has the following beneficial effects: the lower pressure roller 14, the left pressure roller 2, the right pressure roller 11 and the upper pressure roller 20 can all be translated in the horizontal direction, and the left pressure roller 2 and the upper pressure roller 20 can be lifted and lowered in the up and down directions, so that the extrusion shaping space 19 can be accurately adjusted according to square tubes of different specifications, thereby improving the precision of square tube forming; at the same time, square tubes of different specifications can be produced without replacing pressure rollers, which greatly improves the versatility of the sizing machine frame, reduces production costs, improves production efficiency, and reduces labor intensity.

[0029] In some embodiments, Figure 1 As shown, the lower roller translation assembly includes a lower roller screw 18 and a lower roller translation nut screwed to the lower roller screw 18; the lower roller shaft 15 is keyed to a lower connecting sleeve 16, the lower connecting sleeve 16 is rotatably connected to a lower bearing seat 17, the lower bearing seat 17 is connected to the lower roller translation nut, and the lower pressure roller 14 is keyed to the lower connecting sleeve 16; the structure of the upper roller translation assembly is the same as that of the lower roller translation assembly. The connection structure of the upper roller translation nut is also the same as that of the lower roller translation nut. The difference is that the upper roller screw 7 is rotatably connected to the upper slider 6, and the two ends of the upper roller shaft 10 are rotatably connected to the upper slider 6. This article takes the lower roller mechanism as an example to explain the structure and connection relationship in detail, and the upper roller mechanism is not described in detail.

[0030] When the lower pressure roller 14 needs to be translated, the lower connecting sleeve 16 can be translated along the keyway on the lower roller shaft 15 by means of the key. The cooperation of the keyway and the key has a guiding effect on the lower connecting sleeve 16 and the lower pressure roller 14.

[0031] In some embodiments, Figure 1 As shown, a matching hole for matching the lower roller translation nut is provided on the lower bearing seat 17, and the lower bearing seat 17 and the lower roller translation nut are fastened and connected by bolts. The matching hole is provided to increase the contact area between the lower bearing seat 17 and the lower roller translation nut, thereby improving the firmness of the installation of the two.

[0032] In some embodiments, Figure 1 As shown, a limit shoulder is provided at one end of the lower connecting sleeve 16, and a limit step axially abutting against the limit shoulder is provided in the shaft hole of the lower pressure roller 14. The lower pressure roller 14 can be limited by the limit shoulder and the lower bearing seat 17. Such installation does not require a bolt-tightening connection method, and the assembly is simple and convenient.

[0033] In some embodiments, Figure 1 As shown, a support plate 5 is arranged on the left roller translation nut 3, a left roller shaft is arranged on the support plate 5, and the left pressure roller 2 is rotatably connected to the left roller shaft. There are one support plate 5 on each side, providing support for the left roller shaft in the vertical direction.

[0034] In some embodiments, Figure 1As shown, a top screw 13 is provided between the left roller shaft and the support plate 5. The top screw 13 locks the left roller shaft and the support plate 5 to prevent the left roller shaft from rotating.

[0035] In some embodiments, Figure 1 As shown, the lifting mechanism 9 is a worm gear lifting structure. Its lifting rod 8 is vertically connected to the upper slider 6. The worm gear lifting structure is a lifting mechanism 9 with good self-locking performance commonly used in the machinery industry, which can ensure the locking of the position after lifting.

[0036] In some embodiments, Figure 1 As shown, a connecting shaft 21 is provided between the two lifting mechanisms 9. The connecting shaft 21 constrains the two lifting devices and also improves the overall support strength of the frame.

[0037] In some embodiments, Figure 1 As shown, a pull rod 22 is provided between the vertical frames 1. The pull rod 22 constrains the positional relationship of the two vertical frames 1 to prevent the two vertical frames 1 from tilting in the opposite direction or toward each other, ensures the vertical lifting of the upper roller mechanism as a whole, and improves the supporting strength of the frame as a whole.

[0038] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sizing frame, characterized in that: include: Two sets of vertical frames (1), each vertical frame (1) being provided with an upper sliding block (6); The lower roller mechanism comprises a lower roller translation assembly, a lower roller shaft (15) rotatably connected to the stand (1), and a lower pressure roller (14) arranged on the lower roller shaft (15); the lower roller translation assembly drives the lower pressure roller (14) to move horizontally along the lower roller shaft (15); An upper roller mechanism comprises an upper roller translation assembly, an upper roller shaft (10) rotatably connected to the stand (1), and an upper pressure roller (20) arranged on the upper roller shaft (10); the upper roller translation assembly drives the upper pressure roller (20) to move horizontally along the upper roller shaft (10); the upper roller mechanism is arranged on the upper slider (6); A left roller mechanism, comprising a left roller screw (4), a left roller translation nut (3) matched with the left roller screw (4), and a left pressure roller (2) connected to the left roller translation nut (3); the left roller mechanism is arranged on the upper slider (6); A right roller mechanism, comprising a right roller screw (12), a right roller translation nut matched with the right roller screw (12), and a right pressure roller (11) connected with the right roller translation nut; the right roller mechanism is located above the left roller mechanism; as well as A lifting mechanism (9) is arranged on the stand (1); a lifting rod (8) of the lifting mechanism (9) is connected to the upper slider (6); the lifting mechanism (9) drives the upper roller mechanism and the left roller mechanism to rise and fall; the upper pressure roller (20), the left pressure roller (2), the lower pressure roller (14) and the right pressure roller (11) are staggered to form an extrusion and shaping space (19) for shaping the square tube.

2. The sizing frame according to claim 1, characterized in that: The lower roller translation assembly comprises a lower roller screw (18) and a lower roller translation nut screwed to the lower roller screw (18); the lower roller shaft (15) is keyed to a lower connecting sleeve (16), the lower connecting sleeve (16) is rotatably connected to a lower bearing seat (17), the lower bearing seat (17) is connected to the lower roller translation nut, and the lower pressure roller (14) is keyed to the lower connecting sleeve (16); the structure of the upper roller translation assembly is the same as that of the lower roller translation assembly.

3. The sizing frame according to claim 2, characterized in that: The lower bearing seat (17) is provided with a matching hole for matching the lower roller translation nut, and the lower bearing seat (17) and the lower roller translation nut are fastened and connected by bolts.

4. The sizing frame according to claim 2, characterized in that: A limit stop shoulder is provided at one end of the lower connecting sleeve (16), and a limit step axially abutting against the limit stop shoulder is provided in the axial hole of the lower pressure roller (14).

5. The sizing frame according to claim 1, characterized in that: A support plate (5) is arranged on the left roller translation nut (3), a left roller shaft is arranged on the support plate (5), and the left pressure roller (2) is rotatably connected to the left roller shaft.

6. The sizing frame according to claim 5, characterized in that: A top screw (13) is arranged between the left roller shaft and the support plate (5).

7. The sizing frame according to claim 1, characterized in that: The lifting mechanism (9) is a worm gear lifting structure.

8. The sizing frame according to claim 1, characterized in that: A connecting shaft (21) is arranged between the two lifting mechanisms (9).

9. The sizing frame according to claim 1, characterized in that: A pull rod (22) is arranged between the upright frames (1).

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