Horizontal forming rack

Abstract

The utility model provides a forming horizontal rack, which belongs to the technical field of square tube extrusion forming, and comprises a rack body, a lower roller device, an upper roller device and a lifting device, the rack body comprises a vertical rack and an upper slide block capable of sliding up and down along the vertical rack; wherein the vertical frames are divided into two groups, and each vertical frame is provided with an upper sliding block. The lower roller device comprises a lower roller horizontal opening and closing mechanism and a lower roller mechanism. The lower roller mechanism comprises a lower roller shaft and two lower rollers connected to the lower roller shaft. The upper roller device comprises an upper roller horizontal opening and closing mechanism and an upper roller mechanism; the two ends of the upper roller shaft are rotationally connected to the upper sliding blocks, and the upper roller horizontal opening and closing mechanism drives the two upper rollers to be horizontally opened and closed. The lifting device is arranged above the vertical frame, and a lifting rod of the lifting device is connected to the upper sliding block to drive the upper roller mechanism to ascend and descend. According to the forming horizontal rack, the distance between the upper rollers, the distance between the lower rollers and the distance between the upper rollers and the lower rollers can be adjusted according to the specification of a preformed square pipe, and the forming precision of the square pipe is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of square tube extrusion molding, and in particular relates to a molding horizontal 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 forming is difficult and each process must have high accuracy, otherwise it is difficult to ensure the dimensional accuracy of the final square tube.

[0003] During the rough forming process of square tubes, multiple processes are required to gradually bend the two sides of the steel strip, and then perform single-side bending. The forming quality of the previous process is the guarantee of the quality of the subsequent process and the final forming. However, the current square tube forming equipment uses a forming horizontal frame for the bending of the two sides of the steel strip. Due to the different specifications of square tubes, the current forming horizontal frame adjustment is not perfect. For the forming of square tubes of certain specifications, there are problems such as mismatched adjustment and large errors, which is not conducive to the final forming quality of the square tube. Utility Model Content

[0004] The embodiment of the utility model provides a horizontal forming frame, which aims to improve the forming accuracy of square tubes through horizontal synchronous opening and closing and lifting and lowering adjustment.

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

[0006] The frame body comprises a vertical frame and an upper sliding block which can slide up and down along the vertical frame;

[0007] The lower roller device comprises a lower roller horizontal opening and closing mechanism and a lower roller mechanism, wherein the lower roller mechanism comprises a lower roller shaft and two lower rollers connected to the lower roller shaft; both ends of the lower roller shaft are rotatably connected to the stand, and the lower roller horizontal opening and closing mechanism drives the two lower rollers to open and close horizontally;

[0008] The upper roller device comprises an upper roller horizontal opening and closing mechanism and an upper roller mechanism, wherein the upper roller mechanism comprises an upper roller shaft and two upper rollers connected to the upper roller shaft; both ends of the upper roller shaft are rotatably connected to the upper slider, and the upper roller horizontal opening and closing mechanism drives the two upper rollers to open and close horizontally; and

[0009] The lifting device is arranged above the stand, and the lifting rod of the lifting device is connected to the upper slider to drive the upper roller mechanism to rise and fall.

[0010] In an achievable manner, the lower roller horizontal opening and closing mechanism comprises a lower roller opening and closing screw and two lower roller opening and closing nuts matched with the lower roller opening and closing screw; both ends of the lower roller opening and closing screw are provided with threaded sections with opposite rotation directions, and the two lower roller opening and closing nuts are matched with the threaded sections with opposite rotation directions; both ends of the lower roller opening and closing screw are rotatably connected to the stand; the lower roller opening and closing nut is provided with a lower bearing seat which moves horizontally with the lower roller opening and closing nut;

[0011] The lower roller shaft is provided with two lower connecting sleeves connected with the lower roller shaft key, and the lower connecting sleeves are rotatably connected with the lower bearing seat; the lower roller key is connected to the lower connecting sleeves;

[0012] The upper roller horizontal opening and closing mechanism has the same structure as the lower roller horizontal opening and closing mechanism.

[0013] In a feasible manner, an axial shoulder is provided at one end of the lower connecting sleeve, and an annular shoulder axially abutting against the axial shoulder is provided in the axial hole of the lower rolling roller.

[0014] In one achievable manner, a mounting hole for mounting the lower roller opening and closing nut is provided on the lower bearing seat, and the lower bearing seat is fastened to the lower roller opening and closing nut by bolts.

[0015] In one feasible manner, a driving motor is provided at one end of the lower roller opening and closing screw rod, and an axial displacement centering adjustment device is provided at the other end thereof; the axial displacement centering adjustment device includes an external threaded sleeve rotatably connected to the lower roller opening and closing screw rod, and the external threaded sleeve is threadedly connected to the horizontal hole of the vertical frame; the end of the lower roller opening and closing screw rod is provided with a limiting shoulder for preventing the external threaded sleeve from axial movement.

[0016] In one achievable manner, the axis displacement centering adjustment device further comprises an internally threaded sleeve fixedly mounted on the horizontal hole of the stand, and the externally threaded sleeve is threadedly connected to the internally threaded sleeve.

[0017] In one achievable manner, a limit baffle is provided at one end of the horizontal hole on the stand, and an adjustment gap for horizontal centering is provided between the limit baffle and the internal threaded sleeve.

[0018] In one achievable manner, the internal threaded sleeve is provided with a limit stop plate, the limit stop plate abuts against the end surface of the horizontal hole away from the limit stop plate, and the limit stop plate is fastened to the stand by bolts.

[0019] In one achievable manner, the lifting device is a worm gear lifting structure, and a connecting shaft is provided between two groups of the lifting devices.

[0020] In one achievable manner, a pull rod is provided between the two stands.

[0021] Compared with the prior art, the forming horizontal frame provided by the utility model has the following beneficial effects: a lower roller horizontal opening and closing mechanism is provided for adjusting the lower roller horizontally, and the distance between the two lower rollers can be adjusted according to the specifications of the square tube; the upper roller is also separately provided with an upper roller horizontal opening and closing mechanism, and the distance between the two upper rollers can be adjusted according to the specifications of the square tube; and a lifting device for lifting the upper roller is also provided, and the distance between the upper roller and the lower roller can be adjusted according to the thickness of the steel strip. This forming horizontal frame can adjust the spacing between the upper rollers, between the lower rollers, and between the upper roller and the lower roller according to the thickness of the steel strip and the size of the preformed square tube, thereby improving the precision of square tube forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a horizontal molding frame provided by an embodiment of the utility model;

[0023] Figure 2 for Figure 1 The right side structural diagram of the provided molding horizontal frame;

[0024] Description of reference numerals:

[0025] 1. Stand; 2. External threaded sleeve; 3. Internal threaded sleeve; 4. Lower bearing seat; 5. Lower connecting sleeve; 6. Upper roller shaft; 7. Upper rolling roller; 8. Upper roller opening and closing screw rod; 9. Upper slider; 10. Lifting rod; 11. Connecting shaft; 12. Pull rod; 13. Lifting device; 14. Lower roller shaft; 15. Lower roller opening and closing screw rod; 16. Lower rolling roller; 17. Lower roller opening and closing nut; 18. Limit baffle. DETAILED DESCRIPTION

[0026] 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.

[0027] Please also read Figure 1 and Figure 2 Now, the horizontal forming frame provided by the utility model is described. The horizontal forming frame comprises: a frame body, a lower roller device, an upper roller device and a lifting device 13. The frame body comprises a vertical frame 1 and an upper slider 9 that can slide up and down along the vertical frame 1; wherein the vertical frame 1 is divided into two groups, and each vertical frame 1 is provided with an upper slider 9.

[0028] The lower roller device includes a lower roller horizontal opening and closing mechanism and a lower roller mechanism. The lower roller mechanism includes a lower roller shaft 14 and two lower rollers 16 connected to the lower roller shaft 14. The two ends of the lower roller shaft 14 are rotatably connected to the stand 1, and the lower roller horizontal opening and closing mechanism drives the two lower rollers 16 to open and close horizontally. The upper roller device includes an upper roller horizontal opening and closing mechanism and an upper roller mechanism. The upper roller mechanism includes an upper roller shaft 6 and two upper rollers 7 connected to the upper roller shaft 6. The two ends of the upper roller shaft 6 are rotatably connected to the upper slider 9, and the upper roller horizontal opening and closing mechanism drives the two upper rollers 7 to open and close horizontally. The lifting device 13 is arranged above the stand 1, and the lifting rod 10 of the lifting device 13 is connected to the upper slider 9 to drive the upper roller mechanism to rise and fall. Correspondingly, each stand 1 is provided with a lifting device 13.

[0029] Compared with the prior art, the forming horizontal frame provided by the utility model has the following beneficial effects: a lower roller horizontal opening and closing mechanism capable of horizontally opening and closing the lower roller 16 is provided, and the distance between the two lower rollers 16 can be adjusted according to the specifications of the square tube; the upper roller 7 is also separately provided with an upper roller horizontal opening and closing mechanism, and the distance between the two upper rollers 7 can be adjusted according to the specifications of the square tube; and a lifting device 13 for lifting the upper roller 7 is also provided, and the distance between the upper roller 7 and the lower roller 16 can be adjusted according to the thickness of the steel strip. This forming horizontal frame can adjust the spacing between the upper rollers 7, between the lower rollers 16, and between the upper roller 7 and the lower roller 16 according to the thickness of the steel strip and the size of the preformed square tube, thereby improving the precision of square tube forming.

[0030] In some embodiments, see Figure 1 and Figure 2 The lower roller horizontal opening and closing mechanism includes a lower roller opening and closing screw rod 15 and two lower roller opening and closing nuts 17 matched with the lower roller opening and closing screw rod 15; both ends of the lower roller opening and closing screw rod 15 are provided with threaded sections with opposite rotation directions, and the two lower roller opening and closing nuts 17 are matched with the threaded sections with opposite rotation directions. When the lower roller opening and closing screw rod 15 rotates, the two lower roller opening and closing nuts 17 are driven to move horizontally in the opposite or opposite directions; both ends of the lower roller opening and closing screw rod 15 are rotatably connected to the stand 1; the lower roller opening and closing nut 17 is provided with a lower bearing seat 4 which moves horizontally with the lower roller opening and closing nut 17.

[0031] The lower roller shaft 14 is provided with two lower connecting sleeves 5 connected with the lower roller shaft 14 by keys. The lower connecting sleeves 5 are connected with the lower bearing seat 4 by bearings. The lower roller 16 is connected with keys on the lower connecting sleeves 5. The lower roller 16 moves with the opening and closing of the lower roller opening and closing nut 17, and can also rotate with the lower roller shaft 14. Among them, the keyway and flat key arranged along the axial direction between the lower connecting sleeve 5 and the lower roller shaft 14 can play a guiding role in axial movement, and the key connection also enables the lower connecting sleeve 5 and the lower roller 16 to rotate with the lower roller shaft 14.

[0032] The upper roller horizontal opening and closing mechanism has the same structure as the lower roller horizontal opening and closing mechanism, including an upper roller opening and closing screw rod 8 and an upper roller opening and closing nut. The difference is that the upper roller opening and closing screw rod 8 and the upper roller shaft 6 are both rotatably connected to the upper slider 9. The upper roller mechanism has the same structure as the lower roller mechanism, but the difference is that the upper roller 7 and the lower roller 16 have different structures, and the upper roller 7 and the lower roller 16 have mutually matched backlog surfaces.

[0033] The following embodiments of this article are also described by taking the lower roller device as an example, and the structure of the upper roller device is not shown in detail.

[0034] In some embodiments, see Figure 1 and Figure 2 , an axial stop shoulder is provided at one end of the lower connecting sleeve 5, and an annular shoulder axially abutting against the axial stop shoulder is provided in the shaft hole of the lower roller 16. The axial stop shoulder on the lower connecting sleeve 5 has an axial limit function for the lower roller 16. In this assembly method, the lower roller 16 has limit in both the axial and circumferential directions, and the lower roller 16 does not need to be connected with additional bolts, and the assembly and disassembly are simple and convenient.

[0035] In some embodiments, see Figure 1 and Figure 2 The lower bearing seat 4 is provided with a mounting hole for mounting the lower roller opening and closing nut 17, and the lower bearing seat 4 is fastened to the lower roller opening and closing nut 17 by bolts. The installation method of the lower bearing seat 4 being sleeved on the lower roller opening and closing nut 17 can improve the firmness of the connection between the lower bearing seat 4 and the lower roller opening and closing nut 17.

[0036] When the forming horizontal frame is installed, the vertical center line of the whole machine may not be in the designed center position due to processing and assembly errors, which will cause the width center of the conveyed steel belt to be inconsistent with the vertical center line. At this time, it is necessary to perform centering adjustment after the frame assembly is completed. Specifically, in some embodiments, a driving motor is provided at one end of the lower roller opening and closing screw rod 15, and an axial displacement centering adjustment device is provided at the other end thereof; the axial displacement centering adjustment device includes an external threaded sleeve 2 rotatably connected to the lower roller opening and closing screw rod 15, and the external threaded sleeve 2 is threadedly connected to the horizontal hole of the vertical frame 1; the end of the lower roller opening and closing screw rod 15 is provided with a limit shoulder for preventing the external threaded sleeve 2 from axial movement. By rotating the external threaded sleeve 2 and pushing it left and right, the lower roller opening and closing screw rod 15 can be driven to move left and right, and then the two lower roller opening and closing nuts 17 and the two lower rolling rollers 16 can be simultaneously translated to the left or right, thereby realizing the centering of the two lower roller opening and closing nuts 17, thereby ensuring the centering of the two lower rolling rollers 16. Such adjustment can compensate for the errors in processing and assembly and improve the production accuracy.

[0037] One end of the upper roller opening and closing screw rod 8 is also provided with an axis displacement centering adjustment device.

[0038] In some embodiments, see Figure 1 and Figure 2 The axis displacement centering adjustment device also includes an internal thread sleeve 3 fixed on the horizontal hole of the stand 1, and the external thread sleeve 2 is screwed into the internal thread sleeve 3. By setting the internal thread sleeve 3, the problem of the stand 1 being worn due to the direct cooperation between the external thread sleeve 2 and the stand 1 is avoided, and the cost of replacing the internal thread sleeve 3 is low.

[0039] In some embodiments, see Figure 1 and Figure 2 A limit baffle 18 is provided at one end of the horizontal hole on the stand 1, and an adjustment gap for horizontal centering is provided between the limit baffle 18 and the internal threaded sleeve 3. An adjustment gap is reserved for the horizontal displacement of the external threaded sleeve 2. At the same time, a driving motor and a reducer are installed at the other end of the lower roller opening and closing screw rod 15, and a gap is also reserved between the reducer and the stand 1 to facilitate the horizontal or axial adjustment of the lower roller opening and closing screw rod 15.

[0040] In some embodiments, see Figure 1 and Figure 2 The internal threaded sleeve 3 is provided with a limit stop plate, which abuts against the end surface of the horizontal hole away from the limit stop plate 18, and the limit stop plate is fastened to the stand 1 by bolts.

[0041] In some embodiments, see Figure 1 The lifting device 13 is a worm gear lifting structure, and a connecting shaft 11 is provided between the two sets of lifting devices 13. Through the connecting shaft 11, the two sets of lifting devices 13 are constrained, and the supporting strength of the entire frame is also improved.

[0042] In some embodiments, see Figure 1 A pull rod 12 is provided between the two vertical frames 1. The pull rod 12 constrains the two vertical frames 1, and also constrains the positional relationship of the two upper roller mechanisms, so as to prevent the two vertical frames 1 from tilting in the opposite direction or toward each other, ensure the vertical lifting of the upper roller mechanism as a whole, and improve the overall support strength of the frame.

[0043] 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.

[0044] 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 horizontal forming frame, characterized in that: include: The frame body comprises a stand frame (1) and an upper slide block (9) which can slide up and down along the stand frame (1); The lower roller device comprises a lower roller horizontal opening and closing mechanism and a lower roller mechanism, wherein the lower roller mechanism comprises a lower roller shaft (14) and two lower rollers (16) connected to the lower roller shaft (14); both ends of the lower roller shaft (14) are rotatably connected to the stand (1), and the lower roller horizontal opening and closing mechanism drives the two lower rollers (16) to open and close horizontally; An upper roller device comprises an upper roller horizontal opening and closing mechanism and an upper roller mechanism, wherein the upper roller mechanism comprises an upper roller shaft (6) and two upper rollers (7) connected to the upper roller shaft (6); both ends of the upper roller shaft (6) are rotatably connected to the upper slider (9), and the upper roller horizontal opening and closing mechanism drives the two upper rollers (7) to open and close horizontally; and A lifting device (13) is arranged above the stand (1); a lifting rod (10) of the lifting device (13) is connected to the upper slider (9) to drive the upper roller mechanism to rise and fall.

2. The horizontal forming frame according to claim 1, characterized in that: The lower roller horizontal opening and closing mechanism comprises a lower roller opening and closing screw (15) and two lower roller opening and closing nuts (17) matched with the lower roller opening and closing screw (15); the two ends of the lower roller opening and closing screw (15) are provided with threaded sections with opposite rotation directions, and the two lower roller opening and closing nuts (17) are matched with the threaded sections with opposite rotation directions; the two ends of the lower roller opening and closing screw (15) are rotatably connected to the stand (1); the lower roller opening and closing nut (17) is provided with a lower bearing seat (4) which moves horizontally with the lower roller opening and closing nut (17); The lower roller shaft (14) is provided with two lower connecting sleeves (5) connected to the lower roller shaft (14) by a key, and the lower connecting sleeves (5) are rotatably connected to the lower bearing seat (4); the lower rolling roller (16) is connected to the lower connecting sleeves (5) by a key; The upper roller horizontal opening and closing mechanism has the same structure as the lower roller horizontal opening and closing mechanism.

3. The horizontal forming frame according to claim 2, characterized in that: An axial stop shoulder is arranged at one end of the lower connecting sleeve (5), and an annular shoulder axially abutting against the axial stop shoulder is arranged in the axial hole of the lower rolling roller (16).

4. The molding horizontal frame according to claim 2, characterized in that: The lower bearing seat (4) is provided with a mounting hole for mounting the lower roller opening and closing nut (17), and the lower bearing seat (4) is fastened to the lower roller opening and closing nut (17) by bolts.

5. The horizontal forming frame according to claim 2, characterized in that: A driving motor is provided at one end of the lower roller opening and closing screw rod (15), and an axial displacement centering adjustment device is provided at the other end thereof; the axial displacement centering adjustment device comprises an external threaded sleeve (2) rotatably connected to the lower roller opening and closing screw rod (15), and the external threaded sleeve (2) is threadedly connected to the horizontal hole of the stand (1); and a limiting shoulder is provided at the end of the lower roller opening and closing screw rod (15) for preventing the external threaded sleeve (2) from axially moving.

6. The horizontal forming frame according to claim 5, characterized in that: The axis displacement centering adjustment device also includes an internal thread sleeve (3) fixedly arranged on the horizontal hole of the stand (1), and the external thread sleeve (2) is screwed into the internal thread sleeve (3).

7. The molding horizontal frame according to claim 6, characterized in that: A limit baffle (18) is provided at one end of the horizontal hole on the stand (1), and an adjustment gap for horizontal centering is provided between the limit baffle (18) and the internal threaded sleeve (3).

8. The horizontal forming frame according to claim 7, characterized in that: The internal threaded sleeve (3) is provided with a limit stop plate, the limit stop plate abuts against the end surface of the horizontal hole away from the limit stop plate (18), and the limit stop plate is fastened to the stand (1) by bolts.

9. The molding horizontal frame according to claim 1, characterized in that: The lifting device (13) is a worm gear lifting structure, and a connecting shaft (11) is provided between two groups of the lifting devices (13).

10. The molding horizontal frame according to claim 1, characterized in that: A pull rod (12) is arranged between the two upright frames (1).

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