Rotary head binding machine

Abstract

The utility model relates to the technical field of head binding machine equipment, and provides a rotary head binding machine which comprises a machine base, an upper roller and a lower roller which are oppositely installed are arranged on the machine base and can rotate around the axes of the upper roller and the lower roller, a plurality of rolling grooves are formed in the outer surfaces of the upper roller and the lower roller in the axial direction of the upper roller and the lower roller respectively, and the upper roller and the lower roller can rotate around the axes of the rolling grooves. The rolling grooves are arranged between the upper roller and the lower roller in a one-to-one correspondence mode, so that when the upper roller and the lower roller rotate oppositely, the corresponding rolling grooves in the closest positions jointly form a series of round rolling holes arranged in the axial direction. According to the utility model, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the rolling grooves of the upper roller and the lower roller can seamlessly adapt to and process workpieces with complex shapes and variable sizes, and the production efficiency and the flexibility are greatly improved. And the rolling groove is used for carrying out gradual and uniform extrusion deformation on the end part of the workpiece, so that the accurate transition of the head part of the workpiece from thick to thin is realized, and the high efficiency and accuracy of the forming effect are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tying machines, and particularly relates to a rotary tying machine. Background Art

[0002] The rotary rolling head machine is a mechanical device widely used in the industrial field, specifically for rounding the heads of materials such as steel bars and metal wire rods. The current rotary rolling head machine can only be targeted at specific processing objects. For products with complex shapes and variable sizes, the rotary rolling head machine may not fully meet the requirements. For this reason, we propose a rotary tying machine. Content of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides a rotary tying machine to solve the above problems existing in the prior art.

[0005] (2) Technical Solutions

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A rotary tying machine includes a machine base. On the machine base, an upper rolling roller and a lower rolling roller are relatively installed, and both are configured to be rotatable around their respective axes. On the outer surfaces of the upper rolling roller and the lower rolling roller, a plurality of rolling grooves are respectively opened along their axial directions, and these rolling grooves are arranged in one-to-one correspondence between the upper rolling roller and the lower rolling roller, so that when the two rotate towards each other, the rolling grooves at the closest positions together form a series of circular rolling holes arranged axially. The widths of a plurality of the rolling grooves arranged axially in the same horizontal section gradually decrease, so that the diameters of the circular rolling holes formed at the closest positions between the upper rolling roller and the lower rolling roller decrease correspondingly in sequence;

[0007] The diameter of each rolling groove gradually changes in its own extending direction. When the end of the workpiece is inserted from the circular rolling hole with a larger diameter, as the upper rolling roller and the lower rolling roller rotate relatively, its cross-sectional dimension is gradually thinned by the extrusion of the circular rolling hole with a decreasing diameter.

[0008] Furthermore, the rolling groove includes two symmetrically arranged changing sections, and these two changing sections are arranged along the extending direction of the rolling groove, and the ends with smaller diameters of the two changing sections coincide with each other to form a common end. When the upper rolling roller and the lower rolling roller rotate to the position where their common ends are adjacent to each other, it will constitute the part with the smallest diameter in the circular rolling hole.

[0009] Furthermore, the rolling groove is of an annular structure, and the ends of two symmetrically arranged variable sections therein, which are far from the common end, are connected to form a continuous annular structure. Thus, when the upper roll and the lower roll rotate relative to each other, the workpiece enters through the inside of one variable section, passes through the common end, and then enters the other variable section, enabling extrusion deformation and relaxation of the workpiece.

[0010] Furthermore, the rolling groove is of an arc-shaped structure, and the ends of two symmetrically arranged variable sections therein, which are far from the common end, are not connected.

[0011] Furthermore, the diameter of the variable section gradually decreases towards its common end, so as to continuously and smoothly extrude and deform the workpiece when the upper roll and the lower roll rotate relative to each other.

[0012] Furthermore, the variable section is of a stepped structure, and the stepped structure includes an insertion part, a transition part, and a rolling part connected in sequence along the extension direction of the rolling groove. The insertion part has a relatively large diameter for inserting the initial workpiece. The transition part is arranged between the insertion part and the rolling part, and its diameter is smaller than that of the insertion part to transition the extrusion deformation of the workpiece. The rolling part has the smallest diameter, forming the final compression area of the workpiece.

[0013] Furthermore, mating gears are provided at one end of both the upper roll and the lower roll to keep the upper roll and the lower roll rotating synchronously during rotation. A flat key that can drive the lower roll to rotate is sleeved at one end of the lower roll away from the mating gear. A reduction gear is provided on the outer wall of the flat key, and a driving gear with a diameter smaller than its diameter is meshed and connected to the outer wall of the reduction gear. A first motor for driving the driving gear to rotate is provided on one side of the driving gear.

[0014] Furthermore, a sliding plate that can slide along the axial direction of the lower roll is provided on the machine base. A plurality of bearing seats are provided on the sliding plate, and the bearings inside these bearing seats are respectively sleeved on the outer walls of the upper roll and the lower roll to support them. The sliding plate moves along the axial direction of the lower roll to achieve the insertion or separation of the end of the lower roll and the flat key.

[0015] Furthermore, a second motor is installed inside the machine base. The output end of the second motor is connected to a rotating main gear. A transition gear is meshed and connected to the outer wall of the rotating main gear. A rotary disk is provided on the front of the transition gear. The rotary disk provides a sliding track for the sliding plate, enabling the sliding plate to move along the axial direction of the lower roll on the rotary disk. A plurality of positioning blocks are provided on the upper and lower sides of the sliding plate. A positioning bolt is threadedly connected to the positioning block. By rotating the positioning bolt, it can be in close contact with the sliding plate to generate frictional force or clamping force, thereby positioning the sliding plate.

[0016] Further, a rotatable feed roller is provided on the machine base, and the feed roller is located at the front end of the feeding direction of the upper roller and the lower roller to support the workpiece to enter the circular rolling hole formed at the closest position between the upper roller and the lower roller.

[0017] (III) Beneficial effects

[0018] The embodiment of the present utility model provides a rotary head-making machine, which has the following beneficial effects:

[0019] 1. The rolling grooves of the upper roller and the lower roller are precisely matched with each other at the closest position, jointly constituting a series of circular rolling holes that are carefully arranged axially and have continuously changing diameters. This enables the device to seamlessly adapt to and process workpieces with complex shapes and variable sizes. Without the cumbersome replacement of rollers, the processing requirements of workpieces of various specifications can be easily achieved, greatly improving production efficiency and flexibility.

[0020] 2. The workpiece is inserted into the circular rolling hole with a larger diameter. As the upper roller and the lower roller rotate in coordination, the diameter of the rolling hole gradually and finely decreases, gradually and uniformly squeezing and deforming the end of the workpiece, achieving an accurate transition from thick to thin at the head of the workpiece, and ensuring the high efficiency and accuracy of the forming effect. Description of the drawings

[0021] Figure 1 It is a front view schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is a right view schematic diagram of the overall structure of the present utility model;

[0023] Figure 3 It is a front view schematic diagram of the structures of the upper roller and the lower roller of the present utility model;

[0024] Figure 4 It is a schematic diagram of the variable section structure of the present utility model;

[0025] Figure 5 It is a schematic diagram of the stepped rolling groove structure of the present utility model;

[0026] Figure 6 It is a schematic diagram of the arc-shaped rolling groove structure of the present utility model.

[0027] In the figure: 1. Machine base; 2. Upper roller; 21. Rolling groove; 211. Insertion part; 212. Transition part; 213. Rolling part; 22. Variable section; 3. Lower roller; 4. Alignment gear; 5. Flat key; 6. Reduction gear; 7. Driving gear; 8. First motor; 9. Bearing seat; 10. Sliding plate; 11. Second motor; 12. Rotating main gear; 13. Intermediate gear; 14. Rotary disk; 15. Positioning block; 16. Positioning bolt; 17. Feed roller. Specific implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] Refer to the attached Figure 1-3 , a rotary head-tying machine, including a machine base 1 that serves as the support platform for the entire device. On the machine base 1, an upper rolling roller 2 and a lower rolling roller 3 are installed relatively up and down, and both are configured to be rotatable around their respective axes so as to rotate towards or away from each other under the drive of power. On the outer surfaces of the upper rolling roller 2 and the lower rolling roller 3, a plurality of rolling grooves 21 are respectively opened along their axial directions, and these rolling grooves 21 are arranged in one-to-one correspondence between the upper rolling roller 2 and the lower rolling roller 3. So that when the two rotate towards each other, the corresponding rolling grooves 21 at the closest positions cooperate with each other to jointly form a series of circular rolling holes arranged axially. The head of the workpiece is extruded through these circular rolling holes into the required shape. The widths of a plurality of rolling grooves 21 arranged axially in the same horizontal section decrease in sequence, so that the diameters of the circular rolling holes formed at the closest positions between the upper rolling roller 2 and the lower rolling roller 3 decrease correspondingly in sequence, and the processing of workpieces of various specifications can be realized without replacing the rolling rollers;

[0030] The diameter of each rolling groove 21 gradually changes in its own extending direction, that is, the inner diameter of the rolling groove 21 has different sizes. When the end of the workpiece is inserted from the circular rolling hole with a larger diameter, as the upper rolling roller 2 and the lower rolling roller 3 rotate relative to each other, its cross-sectional dimension is gradually thinned by the extrusion of the circular rolling hole with a decreasing diameter.

[0031] During use, the end of the workpiece is inserted from the circular tying hole with a larger diameter. As the upper rolling roller 2 and the lower rolling roller 3 rotate relative to each other, the diameter of the circular tying hole will gradually decrease at this time, and the end of the workpiece will be gradually extruded and deformed at this time, so as to realize the process of changing the head of the workpiece from thick to thin, and realize the efficient and precise extrusion forming of the head of the workpiece.

[0032] Refer to the attached Figure 4 , the rolling groove 21 includes two symmetrically arranged variable sections 22, and there are differences in the diameters within both variable sections 22. The workpiece is inserted from the position with a larger diameter within the variable section 22. These two variable sections 22 are arranged along the extending direction of the rolling groove 21, and the ends with smaller diameters of the two variable sections 22 coincide with each other to form a common end. When the upper rolling roller 2 and the lower rolling roller 3 rotate to make their common ends adjacent to each other, the smallest-diameter part in the circular rolling hole will be formed.

[0033] When the workpiece is extruded, the end of the workpiece is inserted from the circular piercing hole with a larger diameter. When the upper roller 2 and the lower roller 3 rotate towards each other and a circular piercing hole is formed at the common end of the two, the diameter of the circular piercing hole is the smallest, that is, the extrusion forming of the workpiece is completed at this time. The upper roller 2 and the lower roller 3 continue to rotate towards each other. At this time, the relative diameter of the circular piercing hole will gradually increase. At this time, the circular piercing hole is no longer made on the head of the workpiece, which makes it easy to quickly remove the workpiece.

[0034] Embodiment 1

[0035] See attached Figure 3-5 The rolling groove 21 is an annular structure, forming a continuous and seamless annular path, in which two symmetrically arranged change sections 22 are connected at one end away from the common end to form a continuous annular structure. Therefore, when the upper roller 2 and the lower roller 3 rotate relative to each other, the workpiece enters through the common end through one change section 22 and then enters the other change section 22, which can realize the extrusion deformation and relaxation of the workpiece. Since the rolling groove 21 is a continuous annular structure, invalid turning or pause makes the workpiece smoother and more efficient during the processing.

[0036] Embodiment 2

[0037] The structure of the second embodiment is basically the same as that of the first embodiment, except that: Figure 6 The rolling groove 21 is an arc-shaped structure, in which two symmetrically arranged change sections 22 are not connected at one end away from the common end. Due to the non-connectivity of the change sections 22, when the workpiece enters the common end from one change section 22 and then enters the other change section 22, the upper roller 2 and the lower roller 3 do not need to perform a complete rotation cycle. On the contrary, they only need to rotate to an arc sufficient to allow the workpiece to pass through the change section 22 and the common end. This reduced rotation stroke not only shortens the processing time, but also reduces energy consumption and mechanical wear.

[0038] See attached Figure 4, the diameter of the variable section 22 gradually decreases towards its common end direction, so that when the upper roller 2 and the lower roller 3 rotate relative to each other, the workpiece is continuously and smoothly extruded and deformed. The diameter of the variable section 22 gradually decreases in the extending direction towards the common end, which means that the workpiece will be subjected to an increasingly large extrusion force during the movement. This gradual change in diameter not only ensures the continuity of extrusion, but also makes the extrusion process smoother, avoiding damage or shape distortion to the workpiece caused by a suddenly increased extrusion force. Subsequently, the workpiece enters another variable section 22, and the diameter of this variable section 22 gradually increases, enabling the workpiece to gradually relax and restore a certain shape stability after extrusion deformation. During the entire extrusion process, since the diameter of the variable section 22 continuously decreases gradually, the extrusion force received by the workpiece also gradually increases. This helps to achieve a more refined and uniform extrusion deformation effect. At the same time, this smooth extrusion process also reduces the noise and vibration generated during the processing, improving the overall stability of the equipment and the processing quality.

[0039] Refer to the appendix Figure 5 , the variable section 22 is a stepped structure. This stepped structure includes an insertion part 211, a transition part 212, and a rolling part 213 that are sequentially connected along the extending direction of the rolling groove 21. The insertion part 211 has a relatively large diameter and is used for the initial insertion of the workpiece to avoid difficult insertion of the workpiece due to too small a diameter. The transition part 212 is arranged between the insertion part 211 and the rolling part 213, and its diameter is smaller than that of the insertion part 211. The transition part 212 can smoothly guide the workpiece from the insertion part 211 into the rolling part 213 to transition the extrusion deformation of the workpiece, facilitating the workpiece to adapt to the subsequent stronger extrusion. The diameter of the rolling part 213 is the smallest, forming the final compression area of the workpiece with the smallest diameter. It is equivalent to the diameter of the variable section 22 gradually decreasing, and the compression area changes from "point" compression to "line" compression, so that the extrusion time of the workpiece in the compression area with the smallest diameter is increased, which can effectively curb the elastic deformation of the workpiece head and improve the processing accuracy.

[0040] Refer to the appendix Figure 2 , mating gears 4 that mesh with each other are provided at one end of both the upper roller 2 and the lower roller 3, so that the upper roller 2 and the lower roller 3 rotate synchronously during the rotation process. A flat key 5 that can drive its rotation is sleeved on one end of the lower roller 3 away from the mating gear 4. A reduction gear 6 is provided on the outer wall of the flat key 5. A driving gear 7 with a diameter smaller than its diameter is meshed and connected to the outer wall of the reduction gear 6. A first motor 8 for driving its rotation is provided on one side of the driving gear 7.

[0041] During use, the first motor 8 operates. At this time, the driving gear 7 drives the reduction gear 6 to operate, further enabling the flat key 5 to drive the lower roller 3 to rotate. At this time, through the cooperation of the two mating gears 4, the upper roller 2 and the lower roller 3 can rotate towards each other to facilitate the extrusion processing of the workpiece.

[0042] Refer to the appendixFigure 2 On the machine base 1, there is a sliding plate 10 that can slide along the axial direction of the lower roller 3. A number of bearing seats 9 are provided on the sliding plate 10. The bearings inside these bearing seats 9 are respectively sleeved on the outer walls of the upper roller 2 and the lower roller 3 to support them. The sliding plate 10 moves along the axial direction of the lower roller 3 to realize the insertion or separation of the end of the lower roller 3 and the flat key 5. Moving the sliding plate 10 separates the lower roller 3 from the flat key 5. At this time, new upper roller 2 and lower roller 3 can be replaced to avoid the equipment being unable to be used due to the long-term friction damage of the rolling groove 21.

[0043] Preferably, the end of the lower roller 3 is a regular polygon, and a regular polygon groove matching the end of the lower roller 3 is provided in the flat key 5, so that the flat key 5 can not only drive the lower roller 3 to rotate, but also enable the two to separate from each other.

[0044] Refer to the appendix Figure 1 In the machine base 1, a second motor 11 is installed. The output end of the second motor 11 is connected with a rotating main gear 12. The outer wall of the rotating main gear 12 is meshed and connected with a transition gear 13. A rotating disk 14 is provided on the front of the transition gear 13. The rotating disk 14 provides a sliding track for the sliding plate 10, so that the sliding plate 10 can move along the axial direction of the lower roller 3 on the rotating disk 14. When the second motor 11 is started, at this time, the rotating main gear 12 drives the transition gear 13 to rotate, and further enables the rotating disk 14 to drive the sliding plate 10 to rotate. At this time, the upper roller 2 and the lower roller 3 can rotate synchronously, which is convenient for adjusting the overall inclination angle of the upper roller 2 and the lower roller 3;

[0045] A number of positioning blocks 15 are provided on the upper and lower sides of the sliding plate 10 of the rotating disk 14. A positioning bolt 16 is threadedly connected in the positioning block 15. By rotating the positioning bolt 16, it can be in close contact with the sliding plate 10 to generate friction or clamping force, thereby positioning the sliding plate 10. Loosen the positioning bolt 16. At this time, the sliding plate 10 is not restricted and can slide out from the rotating disk 14, which is convenient for replacing the new upper roller 2 and lower roller 3.

[0046] Refer to the appendix Figure 1 On the machine base 1, a rotatable feeding roller 17 is provided. The feeding roller 17 is located at the front end of the feeding direction of the upper roller 2 and the lower roller 3 to support the workpiece to enter the circular rolling hole formed at the nearest position of the upper roller 2 and the lower roller 3. The feeding roller 17 can provide a stable transition platform to prevent the workpiece from shaking or tilting during the feeding process, ensuring that the workpiece can accurately enter the rolling area.

[0047] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary head-binding machine, comprising a machine base (1), on which an upper roller (2) and a lower roller (3) are arranged opposite to each other, both of which are configured to rotate around their respective axes, and on the outer surfaces of the upper roller (2) and the lower roller (3), a plurality of rolling grooves (21) are respectively opened along the axial direction thereof, and these rolling grooves (21) are arranged one by one between the upper roller (2) and the lower roller (3), so that when the two rotate towards each other, the corresponding rolling grooves (21) at the most adjacent positions jointly form a series of circular rolling holes arranged along the axial direction, characterized in that: The widths of the plurality of rolling grooves (21) arranged in the axial direction on the same horizontal cross section are reduced in sequence, so that the diameters of the circular rolling holes formed at the positions closest to the upper rolling roller (2) and the lower rolling roller (3) are reduced in sequence accordingly; The diameter of each rolling groove (21) changes gradually in its own extension direction. When the end of the workpiece is inserted from the circular rolling hole with a larger diameter, as the upper rolling roller (2) and the lower rolling roller (3) rotate relative to each other, its cross-sectional size is squeezed by the reduced circular rolling hole and gradually becomes thinner.

2. A rotary head-binding machine as claimed in claim 1, characterized in that: The rolling groove (21) comprises two symmetrically arranged change sections (22), the two change sections (22) are arranged along the extension direction of the rolling groove (21), and the ends with smaller diameters of the two change sections (22) overlap with each other to form a common end. When the upper rolling roller (2) and the lower rolling roller (3) rotate until their common ends are adjacent to each other, they will form the part with the smallest diameter in the circular rolling hole.

3. A rotary head-binding machine as claimed in claim 2, characterized in that: The rolling groove (21) is an annular structure, in which two symmetrically arranged change sections (22) are connected at one end away from the common end to form a continuous annular structure, so that when the upper roller (2) and the lower roller (3) rotate relatively, the workpiece passes through the interior of one change section (22) and enters the other change section (22) after passing through the common end, thereby achieving extrusion deformation and relaxation of the workpiece.

4. A rotary head-binding machine as claimed in claim 2, characterized in that: The rolling groove (21) is an arc-shaped structure, and the ends of the two symmetrically arranged change sections (22) therein that are away from the common end are not connected.

5. A rotary head-binding machine as claimed in claim 3 or 4, characterized in that: The diameter of the changing section (22) gradually decreases towards its common end, so that the workpiece is continuously and smoothly extruded and deformed when the upper roller (2) and the lower roller (3) rotate relative to each other.

6. A rotary head-binding machine as claimed in claim 3 or 4, characterized in that: The changing section (22) is a stepped structure, which comprises an inserting portion (211), a transition portion (212) and a rolling portion (213) connected in sequence along the extension direction of the rolling groove (21). The inserting portion (211) has a relatively large diameter and is used for inserting an initial workpiece. The transition portion (212) is arranged between the inserting portion (211) and the rolling portion (213) and has a smaller diameter than the inserting portion (211) to transitionally deform the extrusion of the workpiece. The rolling portion (213) has the smallest diameter and forms a final pressure-bearing area of ​​the workpiece.

7. A rotary head-binding machine as claimed in claim 1, characterized in that: One end of each of the upper roller (2) and the lower roller (3) is provided with a mating gear (4) meshing with each other, so that the upper roller (2) and the lower roller (3) can keep rotating synchronously during the rotation process; one end of the lower roller (3) away from the mating gear (4) is sleeved with a flat key (5) that can drive the flat key (5) to rotate; the outer wall of the flat key (5) is provided with a reduction gear (6); the outer wall of the reduction gear (6) is meshingly connected with a driving gear (7) having a diameter smaller than the reduction gear; one side of the driving gear (7) is provided with a first motor (8) that drives the driving gear (7) to rotate.

8. A rotary head-binding machine as claimed in claim 7, characterized in that: The machine base (1) is provided with a sliding plate (10) which can slide along the axial direction of the lower roller (3), and the sliding plate (10) is provided with a plurality of bearing seats (9). The bearings inside the bearing seats (9) are respectively sleeved on the outer walls of the upper roller (2) and the lower roller (3) to support them. The sliding plate (10) moves along the axial direction of the lower roller (3) to achieve the insertion or separation of the end of the lower roller (3) and the flat key (5).

9. A rotary head-binding machine as claimed in claim 8, characterized in that: A second motor (11) is installed in the machine base (1), and the output end of the second motor (11) is connected to a rotating main gear (12). The outer wall of the rotating main gear (12) is meshingly connected to a transition gear (13). A rotating disk (14) is provided on the front of the transition gear (13). The rotating disk (14) provides a sliding track for the sliding plate (10), so that the sliding plate (10) can move on the rotating disk (14) along the axial direction of the lower roller (3). The rotating disk (14) is provided with a plurality of positioning blocks (15) on the upper and lower sides of the sliding plate (10). The positioning blocks (15) are internally threaded with positioning bolts (16). By rotating the positioning bolts (16), the positioning bolts (16) can be brought into close contact with the sliding plate (10) and generate friction or clamping force, thereby positioning the sliding plate (10).

10. A rotary head-binding machine as claimed in claim 1, characterized in that: The machine base (1) is provided with a rotatable feed roller (17), which is located at the front end of the upper roller (2) and the lower roller (3) in the feeding direction to support the workpiece to enter the circular rolling hole formed at the most adjacent position of the upper roller (2) and the lower roller (3).

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