Bending die device for profile bending machine

Abstract

The bending die device for the profile bending machine comprises a driving die roller and two driven die rollers, the driving die roller and the driven die rollers are made of polytetrafluoroethylene materials, and the driving die roller and the driven die rollers are axially and circumferentially positioned on a driving shaft and a driven shaft respectively, and the upper ends of the driving shaft and the driven shaft extend out of the upper end face of a shell of the profile bending machine. The upper end of the driving shaft is fixedly connected with a pressing and fixing device which is matched with the upper end of the driving die roller and used for pressing and fixing the driving die roller to the driving shaft, and a pressing assembly used for pressing and fixing the driven die roller to the driven shaft is fixed to the upper end of the driven shaft. By optimizing the materials of the driving die roller and the driven die roller, the quality problem that the metal die roller causes indentations or scratches on the surface of a section bar when the section bar is bent is solved, the bending quality of the section bar is improved, the axial gap between the driving die roller and the driving shaft is eliminated, the transmission precision is improved, the stability and the reliability of the mounting structure of the driving die roller are good, and the service life of the driving die roller is prolonged. And the requirement of high pressure bearing capacity is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of profile bending machines, and in particular relates to a bending die device used for a profile bending machine. Background Art

[0002] Profile bending machine is a special machine used to bend flat steel, square steel, round steel, angle steel, I-shaped steel, H-shaped steel, square tube, rectangular tube, round tube and other profiles. At present, there are many domestic profile bending machine manufacturers. The die rollers in the bending die device adapted to the profile are mostly made of steel. When the steel die roller contacts and bends the profile, it is easy to cause indentations on the surface of the profile, affecting the bending quality of the profile. In addition, the existing triangularly distributed active die roller and driven die roller have the same installation structure. Since the active die roller has a greater bearing pressure than the other two driven die rollers, the stability and reliability of the active die roller are poor during operation, affecting the bending quality of the profile. Therefore, it is necessary to make improvements to the above problems. Utility Model Content

[0003] The technical problem solved by the utility model is as follows: a bending die device for a profile bending machine is provided. By optimizing the materials of the active die roller and the driven die roller, the active die roller and the driven die roller made of polytetrafluoroethylene are adopted, so that the quality problem that the metal material die roller causes indentations or scratches on the surface of the profile when the profile is bent is solved, and the bending quality of the profile is improved. The active die roller and the active shaft are pressed and fixedly connected by a clamping and fixing device, and the axial clearance between the active die roller and the active shaft is eliminated, and the transmission accuracy is improved. The active die roller installation structure has good stability and reliability, meets the requirements of large pressure bearing capacity, and has high use value.

[0004] The technical solution adopted by the utility model is as follows: a bending die device for a profile bending machine comprises a driving die roller and two driven die rollers, and the driving die roller and the driven die roller are both made of polytetrafluoroethylene material, the driving die roller and the driven die roller are respectively axially and circumferentially positioned on a driving shaft and a driven shaft whose upper ends extend out of the upper end surface of a housing of the profile bending machine, the upper end of the driving shaft is fixedly connected with a clamping and fixing device which is adapted to the upper end of the driving die roller and is used for clamping and fixing the driving die roller on the driving shaft, and the upper end of the driven shaft is fixed with a clamping assembly which is used for clamping and fixing the driven die roller on the driven shaft.

[0005] The lower ends of the active die roller and the driven die roller are respectively positioned on the positioning platforms at the upper ends of the active shaft and the driven shaft, and the active die roller and the active shaft as well as the driven die roller and the driven shaft are circumferentially positioned and connected via keys.

[0006] Furthermore, the clamping and fixing device includes a flange ring and a pressure plate 1, the upper end surface of the active mold roller is formed with a positioning groove which forms a stepped structure with the upper end of the center hole, and the lower end of the flange ring whose thickness is greater than the depth of the positioning groove is adapted to be in the positioning groove, the pressure plate 1 is located on the upper end surface of the flange ring, and the long bolt passing through the through hole on the upper end surface of the pressure plate 1 is adapted to be connected with the threaded hole on the upper end surface of the active shaft, thereby realizing the clamping and fixing of the active mold roller on the active shaft.

[0007] Furthermore, a fixing ring is fixed on the hexagonal head at the upper end of the long bolt to facilitate the rotation operation.

[0008] Furthermore, the upper end surface of the driving shaft is lower than the upper end surface of the flange ring.

[0009] Furthermore, the clamping assembly includes a second pressure plate, which is arranged on the upper end surface of the driven mold roller, and the bolts passing through the through holes on the second pressure plate are adapted to be connected with the threaded holes on the upper end surface of the driven shaft to achieve the clamping and fixing of the driven mold roller on the driven shaft.

[0010] The advantages of this utility model compared with the prior art:

[0011] 1. This technical solution optimizes the materials of the active die roller and the driven die roller, and adopts active die roller and driven die roller made of polytetrafluoroethylene, thereby solving the quality problem that the metal material die roller causes indentations or scratches on the surface of the profile when the profile is bent, and improving the bending quality of the profile;

[0012] 2. This technical solution adopts the method of raising the pressure plate 1 by a flange ring, and the active die roller is pressed and fixed to the active shaft by a structure in which a long bolt passing through the pressure plate 1 is threadedly connected to the end of the active shaft, thereby eliminating the axial clearance between the active die roller and the active shaft and improving the transmission accuracy;

[0013] 3. This technical solution has a simple structure, novel design, convenient and quick disassembly and assembly, and the active die roller installation structure has good stability and reliability, meets the requirements of large pressure bearing capacity, and has high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model

[0015] Figure 2 It is a schematic diagram of the pressing and fixing structure of the active die roller and the active shaft of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiment of the present utility model Figure 1-2, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0019] Bending die devices for profile bending machines, such as Figure 1-2 As shown, it includes an active die roller 1 and two driven die rollers 2 located above the housing of the profile bending machine, and the active die roller 1 and the driven die roller 2 are both made of polytetrafluoroethylene material, and the active die roller 1 and the driven die roller 2 are respectively axially and circumferentially positioned on a driving shaft 3 and a driven shaft 4 whose upper ends extend out of the upper end surface of the housing of the profile bending machine, and the upper end of the active shaft 3 is fixedly connected with a clamping and fixing device adapted to the upper end of the active die roller 1 and used to clamp and fix the active die roller 1 on the active shaft 3, and the upper end of the driven shaft 4 is fixed with a clamping assembly used to clamp and fix the driven die roller 2 on the driven shaft 4; in the above structure, by optimizing the materials of the active die roller 1 and the driven die roller 2, the active die roller 1 and the driven die roller 2 made of polytetrafluoroethylene are used, so as to solve the quality problem that the metal material die roller causes indentations or scratches on the surface of the profile when the profile is bent, and improve the profile bending quality;

[0020] Among them, the lower ends of the active die roller 1 and the driven die roller 2 are respectively positioned on the positioning platforms at the upper ends of the active shaft 3 and the driven shaft 4, so as to realize the lower axial positioning of the active die roller 1 and the driven die roller 2, and the active die roller 1 and the active shaft 3 as well as the driven die roller 2 and the driven shaft 4 are all connected in circumferential positioning through the key 7, so as to provide conditions for the active die roller 1 and the driven die roller 2 to rotate synchronously with the active shaft 3 and the driven shaft 4 respectively.

[0021] The specific structure of the clamping and fixing device is as follows: the clamping and fixing device includes a flange ring 5 and a pressure plate 6, the upper end surface of the active die roller 1 is formed with a positioning groove 8 which forms a stepped structure with the upper end of the center hole, and the lower end of the flange ring 5 whose thickness is greater than the depth of the positioning groove 8 is adapted to the positioning groove 8, thereby ensuring that the upper end surface of the flange ring 5 is higher than the upper end surface of the active die roller 1, providing a cushioning condition for the clamping of the active die roller 1, the pressure plate 6 is located on the upper end surface of the flange ring 5, and the long bolt 9 passing through the through hole on the upper end surface of the pressure plate 6 is adapted to be connected with the threaded hole on the upper end surface of the active shaft 3, so as to realize the clamping and fixing of the active die roller 1 on the active shaft 3; specifically, the hexagonal head on the upper end of the long bolt 9 A fixing ring 11 is fixed for easy rotation operation, so as to facilitate the rotation of the long screw 9; in the above structure, the flange ring 5 is used to raise the pressure plate 6, and the active die roller 1 and the active shaft 3 are pressed and fixedly connected by the structure of the long bolt 9 passing through the pressure plate 6 and the end of the active shaft 3 being threadedly connected, thereby eliminating the axial gap between the active die roller 1 and the active shaft 3 and improving the transmission accuracy; wherein, the upper end surface of the active shaft 3 is lower than the upper end surface of the flange ring 5, which is conducive to adjusting the pressure plate 6 by tightening the long bolt 9 to provide a clamping force to the active die roller 1 through the flange ring 5, thereby eliminating the axial gap between the active die roller 1 and the active shaft 3 and ensuring the stability and reliability of the installation structure of the active die roller 1.

[0022] The specific structure of the clamping assembly is as follows: the clamping assembly includes a pressure plate 10, which is arranged on the upper end surface of the driven mold roller 2, and the bolts 12 passing through the through holes on the pressure plate 10 are adapted to be connected with the threaded holes on the upper end surface of the driven shaft 4, so as to realize the clamping and fixing of the driven mold roller 2 on the driven shaft 4.

[0023] The technical solution has a simple structure, novel design, convenient and quick disassembly and assembly, good stability and reliability of the active die roller installation structure, meets the requirements of large pressure bearing capacity, and has high use value.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Bending die device for profile bending machine, Features: The invention comprises a driving die roller (1) and two driven die rollers (2), wherein the driving die roller (1) and the driven die roller (2) are both made of polytetrafluoroethylene material, the driving die roller (1) and the driven die roller (2) are respectively positioned axially and circumferentially on a driving shaft (3) and a driven shaft (4) whose upper ends extend out of the upper end surface of a profile bending machine housing, the upper end of the driving shaft (3) is fixedly connected with a clamping and fixing device adapted to the upper end of the driving die roller (1) and used for clamping and fixing the driving die roller (1) on the driving shaft (3), and the upper end of the driven shaft (4) is fixed with a clamping component used for clamping and fixing the driven die roller (2) on the driven shaft (4).

2. The bending die device for a profile bending machine according to claim 1, Features: The lower ends of the active die roller (1) and the passive die roller (2) are respectively positioned on positioning platforms at the upper ends of the active shaft (3) and the passive shaft (4), and the active die roller (1) and the active shaft (3) as well as the passive die roller (2) and the passive shaft (4) are all connected in a circumferential positioning manner via a key (7).

3. The bending die device for a profile bending machine according to claim 2, Features: The clamping and fixing device comprises a flange ring (5) and a pressure plate 1 (6); the upper end surface of the active die roller (1) is provided with a positioning groove (8) which forms a stepped structure with the upper end of the center hole, and the lower end of the flange ring (5) whose thickness is greater than the depth of the positioning groove (8) is adapted to be in the positioning groove (8); the pressure plate 1 (6) is located on the upper end surface of the flange ring (5), and a long bolt (9) passing through the through hole on the upper end surface of the pressure plate 1 (6) is adapted to be connected with the threaded hole on the upper end surface of the active shaft (3), so as to realize the clamping and fixing of the active die roller (1) on the active shaft (3).

4. The bending die device for a profile bending machine according to claim 3, Features: A fixing ring (11) is fixed on the hexagonal head at the upper end of the long bolt (9) to facilitate the rotation operation.

5. The bending die device for a profile bending machine according to claim 4, Features: The upper end surface of the driving shaft (3) is lower than the upper end surface of the flange ring (5).

6. The bending die device for a profile bending machine according to any one of claims 1 to 5, Features: The clamping assembly comprises a second clamping plate (10), which is arranged on the upper end surface of the driven die roller (2), and a bolt (12) passing through a through hole on the second clamping plate (10) is adapted to be connected with a threaded hole on the upper end surface of the driven shaft (4), so as to clamp and fix the driven die roller (2) on the driven shaft (4).

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