Cooling tube rib making machine and rib making method

Abstract

The present invention relates to the technical field of rolling rib dies, and more specifically, to a cooling tube rib making machine and a rib making method. The cooling tube rib making machine includes a positioning unit, wherein a first clamp and a second clamp are both provided with an arcuate groove; the arcuate groove is used to accommodate pipe fittings; and two coaxially spaced avoidance grooves are provided on the inner wall of the arcuate groove. A first driving unit drives the first clamp and the second clamp to move closer to or away from each other. In the rolling unit, the first roller and the second roller are spaced apart along the axis of the rotating shaft; the spacing between the first roller and the second roller is equal to the spacing between the two avoidance grooves; a first receiving groove for accommodating the first roller and a second receiving groove for accommodating the second roller are provided on the rotating shaft; the first roller and the second roller protrude from the outer circumferential wall of the rotating shaft by a first height and a second height, respectively; the first height is greater than the second height. The second driving unit drives the rotating shaft to rotate. This solves the problem of how to ensure the consistency of the protrusion height between multiple rolled ribs.

Description

Technical Field

[0001] The present invention relates to the technical field of bead rolling dies, and in particular to a cooling tube bead making machine and a bead making method. Background Art

[0002] In the production of cooling water pipes for automotive engine retarders, a roll forming process is typically used to plastically deform the ends of the pipes (i.e., the cooling water pipes). A hydraulically or mechanically driven roller mechanism forms multiple, spaced, annular protrusions (called beading) on the pipe end surface. This process involves core components such as a dedicated roll forming die, a pipe clamping and positioning mechanism, and a synchronous transmission. The roll forming die features a cavity structure designed to meet the target bead size. The deformation is controlled by adjusting the roller spacing and feed pressure. The clamping and positioning mechanism uses a multi-point hydraulic clamp to secure the pipe axis, preventing radial deviation during processing. The synchronous transmission coordinates roller rotation with axial feed motion to achieve continuous and uniform plastic deformation. During process implementation, parameters such as roll forming pressure, forming temperature, and feed speed must be strictly controlled to ensure that the bead geometry meets design requirements. The double beading structure, through an interference fit with the clamp during subsequent assembly, provides axial positioning and pull-out resistance at the pipe joint. Its high consistency directly impacts sealing effectiveness and connection reliability.

[0003] In the existing technology, the wear of the cavity caused by the long-term use of the rolling die will change the actual extrusion gap. When there is a difference in the degree of die wear between the double-rolling bead forming stations, the height deviation of the two protrusions will exceed the process tolerance range. In addition, the difference in the dynamic response characteristics of the equipment transmission system will also cause problems: during the synchronous processing of the two stations, factors such as the pressure pulsation of the hydraulic system, the accumulation of mechanical transmission gaps, and the deviation of servo control accuracy make it impossible for the two forming stations to maintain completely consistent loading curves. The core contradiction of the above problem is that the existing process system lacks a closed-loop compensation mechanism for the real-time attenuation of the mold state and the fluctuation of the equipment motion accuracy, which makes it difficult to stably control the height consistency of the double rolling bead. Summary of the Invention

[0004] In order to solve the problem of how to ensure the consistency of the protrusion height between multiple rolled ribs, the present invention provides a cooling tube rib making machine and a rib making method.

[0005] In a first aspect, the present invention provides a cooling tube rib machine, the cooling tube rib machine comprising:

[0006] A positioning unit comprising a first clamping die and a second clamping die; both the first clamping die and the second clamping die are provided with an arcuate groove; the arcuate groove is used to accommodate a pipe; the inner circumferential wall of the arcuate groove is provided with two arcuate avoidance grooves; the avoidance grooves are coaxial with the arcuate groove;

[0007] a first driving unit, wherein the first driving unit drives the first clamping die and the second clamping die to move closer to or farther from each other; when the first clamping die and the second clamping die are clamping the pipe, the arcuate groove on the first clamping die is coaxial with the arcuate groove on the second clamping die;

[0008] A rolling unit, the rolling unit comprising a rotating shaft, a first roller and a second roller; the first roller and the second roller are spaced apart along the axis of the rotating shaft; the distance between the first roller and the second roller is equal to the distance between the two avoidance grooves; a first accommodating groove and a second accommodating groove are formed on the outer circumferential wall of the rotating shaft; the first accommodating groove is used to accommodate the first roller; the second accommodating groove is used to accommodate the second roller; the first roller protrudes from the outer circumferential wall of the rotating shaft by a first height; the second roller protrudes from the outer circumferential wall of the rotating shaft by a second height; the first height is greater than the second height;

[0009] a second driving unit, wherein the second driving unit drives the rotating shaft to rotate; a distance between the first roller and the second driving unit is greater than a distance between the second roller and the second driving unit;

[0010] A third driving unit drives the rolling unit to move.

[0011] In some embodiments, the rolling unit further includes a first mounting shaft; a first mounting hole is formed on the rotating shaft; the first mounting shaft is located in the first mounting hole; the first mounting shaft is detachably connected to the rotating shaft; the first receiving groove and the second receiving groove are respectively connected to the first mounting hole;

[0012] When the first roller is located in the first receiving groove and the second roller is located in the second receiving groove, the first roller and the second roller are coaxially connected to the first mounting shaft respectively.

[0013] In some embodiments, an axis of the first mounting hole is parallel to and spaced apart from an axis of the rotating shaft.

[0014] In some embodiments, the angle between the axis of the first mounting hole and the axis of the rotating shaft is greater than 0° and less than 5°, the axis of the first mounting hole and the axis of the rotating shaft are located in the same plane, and the axial distance between the first mounting hole and the rotating shaft gradually increases in the direction away from the second drive unit.

[0015] In some embodiments, a second mounting hole is provided on the rotating shaft; a third accommodating groove and a fourth accommodating groove are provided on the outer circumferential wall of the rotating shaft; the third accommodating groove and the fourth accommodating groove are spaced apart along the axis of the rotating shaft; the distance between the third accommodating groove and the second driving unit is greater than the distance between the fourth accommodating groove and the second driving unit; the third accommodating groove and the fourth accommodating groove are respectively connected to the second mounting hole; the distance between the third accommodating groove and the fourth accommodating groove is equal to the distance between the first accommodating groove and the second accommodating groove; the third accommodating groove is used to accommodate the first roller; the fourth accommodating groove is used to accommodate the second roller;

[0016] The rolling unit further includes a second mounting shaft; the second mounting shaft is located in the second mounting hole; the second mounting shaft is detachably connected to the rotating shaft;

[0017] When the first roller is located in the third accommodating groove and the second roller is located in the fourth accommodating groove, the first roller and the second roller are coaxially connected to the second mounting shaft respectively.

[0018] In some embodiments, an axis of the second mounting hole is parallel to and spaced apart from an axis of the rotating shaft.

[0019] In a second aspect, the present invention discloses a method for cooling pipe ribs, which is applied to the cooling pipe rib machine described in any one of the above embodiments; the method for cooling pipe ribs comprises: step S10, based on the pipe to be ribbed being located between a first clamping die and a second clamping die; controlling a first drive unit to drive the first clamping die and the second clamping die toward each other until the pipe is clamped and positioned; wherein, when the pipe is clamped and positioned, the pipe is clamped in the arcuate grooves of the first clamping die and the second clamping die;

[0020] Step S20: Based on the completion of the clamping and positioning of the pipe, controlling the third driving unit to drive the rolling unit to move toward the inside of the pipe until the rolling unit moves to a preset position; wherein, when the rolling unit is in the preset position, the rotating shaft is eccentrically arranged with respect to the pipe, the first roller and the second roller are located on a side of the axis of the rotating shaft close to the axis of the pipe, and the distance between the rotating shaft and the inner wall of the pipe is less than the first height; and the distance between the rotating shaft and the inner wall of the pipe is less than the second height;

[0021] Step S30, based on the rolling unit being located at the preset position, controlling the second driving unit to drive the rolling unit to rotate around the axis of the arc groove;

[0022] Step S40: Based on the rotation time of the rolling unit reaching a preset time, controlling the third driving unit to drive the rolling unit to separate from the pipe;

[0023] Step S50 : Based on the rolling unit being separated from the pipe, the first driving unit is controlled to drive the first clamping die and the second clamping die to move away from each other, and the rib making is completed.

[0024] In some embodiments, a second mounting hole is formed on the rotating shaft; a third receiving groove and a fourth receiving groove are formed on the outer circumferential wall of the rotating shaft; the rolling unit further comprises a second mounting shaft; the second mounting shaft is located in the second mounting hole; and the second mounting shaft is detachably connected to the rotating shaft;

[0025] The step S20 includes:

[0026] Step S21: Based on the completion of the clamping and positioning of the pipe fitting, the use state and use time of the rolling unit are obtained; wherein the use state includes a first state and a second state; in the first state, the first roller is located in the first receiving groove, and the second roller is located in the second receiving groove; in the second state, the first roller is located in the third receiving groove, and the second roller is located in the fourth receiving groove;

[0027] Step S22: Based on the rolling unit being in the first state and the usage time being less than the first service life, executing step S25;

[0028] Step S23: Based on the rolling unit being in the first state and the usage time being greater than the first service life, adjusting the rolling unit to the second state;

[0029] Step S24, based on the rolling unit switching to the second state, executing step S25;

[0030] Step S25: Controlling the third driving unit to drive the rolling unit to move toward the interior of the pipe until the rolling unit moves to a preset position; wherein, when the rolling unit is in the preset position, the rotating shaft is eccentrically arranged with respect to the pipe, the first roller and the second roller are located on a side of the rotating shaft that is closer to the axis of the pipe, and the distance between the rotating shaft and the inner wall of the pipe is less than the first height; and the distance between the rotating shaft and the inner wall of the pipe is less than the second height;

[0031] The step S40 includes:

[0032] Step S41: based on the rotation time of the rolling unit reaching a preset time, controlling the third driving unit to drive the rolling unit to separate from the pipe; and accumulating the preset time as the usage time of the rolling unit.

[0033] In some embodiments, step S24 includes:

[0034] Step S241: Based on the rolling unit switching to the second state and the usage time being less than the second service life, execute step S25; wherein, the second service life is greater than the first service life.

[0035] In some embodiments, step S24 further includes:

[0036] Step S242: Based on the rolling unit switching to the second state and the usage time being greater than the second service life, a signal for replacing the rolling unit is issued.

[0037] To solve the problem of how to ensure the consistency of the protrusion height between multiple ribs, the present invention has the following advantages:

[0038] By means of the coaxial arc grooves and avoidance groove structure on the first clamping die and the second clamping die in the positioning unit, the first driving unit is cooperated to drive the first clamping die and the second clamping die to clamp the pipe fitting, so as to achieve precise alignment of the pipe fitting axis and the avoidance groove; by means of the first roller and the second roller arranged on the rotating shaft in the rolling unit, the third driving unit is used to drive the rolling unit to move along the axial direction of the pipe fitting, and the second driving unit is used to drive the rotating shaft to rotate; wherein the spacing between the first roller and the second roller is set to be equal to the spacing between the two avoidance grooves, and the protruding height of the first roller is greater than the protruding height of the second roller. When the rotating shaft is slightly deflected by radial force, the difference in the protruding heights of the two rollers is designed to offset the difference in contact pressure of the two rollers caused by the deflection of the rotating shaft, so that the double ribs formed by the first roller and the second roller at the end of the pipe fitting maintain uniform plastic deformation during the rolling process, thereby ensuring the dimensional consistency of the protruding height of the double ribs, and ultimately solving the problem of inconsistent protruding height caused by the difference in roller torque when forming the double ribs at the end of the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of a cooling tube rib machine according to an embodiment is shown in a first perspective;

[0040] Figure 2 Shown Figure 1 A schematic diagram of the cooling tube rib machine in the embodiment from a second viewing angle;

[0041] Figure 3 Shown Figure 2 A schematic side view of a cooling tube rib machine in an embodiment;

[0042] Figure 4 Shown Figure 3 AA cross-sectional schematic diagram of the cooling tube rib machine in the embodiment;

[0043] Figure 5 A schematic diagram of a pipe fitting according to an embodiment is shown;

[0044] Figure 6 A schematic diagram of a positioning unit of a cooling tube rib machine according to an embodiment of the present invention is shown in a first perspective;

[0045] Figure 7 Shown Figure 6 A schematic diagram of a positioning unit of a cooling tube rib machine in an embodiment from a second viewing angle;

[0046] Figure 8 A schematic diagram of a rolling unit of a cooling tube rib machine according to an embodiment is shown;

[0047] Figure 9 Shown Figure 8 A schematic front view of a rolling unit of a cooling tube rib machine in an embodiment;

[0048] Figure 10 Shown Figure 8 A schematic side view of a rolling unit of a cooling tube rib machine in an embodiment;

[0049] Figure 11 Shown Figure 8 A schematic top view of a rolling unit of a cooling tube rib machine in an embodiment;

[0050] Figure 12 Shown Figure 11 A schematic cross-sectional view taken along line BB of a rolling unit of a cooling tube rib machine in an embodiment;

[0051] Figure 13 A schematic diagram of a rolling unit of a cooling tube rib machine according to another embodiment is shown;

[0052] Figure 14 A schematic flow chart of a method for cooling pipe ribs according to an embodiment is shown.

[0053] Figure numerals: 10 pipe fitting; 20 positioning unit; 21 first clamping die; 22 second clamping die; 23 arc groove; 24 avoidance groove; 30 rolling unit; 31 rotating shaft; 311 first accommodating groove; 312 second accommodating groove; 313 first mounting hole; 314 second mounting hole; 315 third accommodating groove; 316 fourth accommodating groove; 317 bolt hole; 32 first roller; 33 second roller. DETAILED DESCRIPTION

[0054] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the present disclosure, rather than to imply any limitation on the scope of the present disclosure.

[0055] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." Terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships. For example, the term "on" may, in certain circumstances, be used to indicate a dependency or connection relationship. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" are to be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise specified, "plurality" means two or more.

[0056] In existing cooling tube beading machines, the double-roller beading process on the end of the tube 10 can lead to inconsistent bead heights. This can lead to deviations in the beading height parameters after repeated rolling operations due to roller wear or changes in the cantilever deflection of the rotating shaft 31, thus affecting the uniformity of the double-roller beading height.

[0057] In this embodiment, in order to ensure the consistency of the multiple beading processes performed on the end of the pipe 10, this embodiment discloses a cooling pipe beading machine. Figure 1 、 Figure 2 、 Figure 3 As shown, the cooling tube rib machine includes a positioning unit 20, a first drive unit, a rolling unit 30, a second drive unit, and a third drive unit. The positioning unit 20 includes a first clamping die 21 and a second clamping die 22; Figure 6 、 Figure 7As shown, an arcuate groove 23 is provided on each of the first clamping die 21 and the second clamping die 22; the arcuate groove 23 is used to accommodate the pipe 10; the inner circumferential wall of the arcuate groove 23 has two arcuate avoidance grooves 24; the avoidance groove 24 is coaxial with the arcuate groove 23. By setting the first clamping die 21 and the second clamping die 22 of the positioning unit 20, and both of them have an arcuate groove 23 for accommodating the pipe 10, positioning support can be provided for the pipe 10, and at the same time, an avoidance groove 24 coaxial with the arcuate groove 23 is provided on the inner circumferential wall of the arcuate groove 23. The avoidance groove 24 can provide avoidance space for the pipe 10 during the rolling process, so as to facilitate the subsequent rolling operation to perform precise processing on the pipe 10; the arcuate grooves 23 and the avoidance grooves 24 of the first clamping die 21 and the second clamping die 22 are coaxially provided, which can ensure that the axis of the pipe 10 is aligned during positioning, thereby improving positioning accuracy. In other embodiments, such as Figure 6 、 Figure 7 As shown, when the first clamp 21 and the second clamp 22 are spliced together, the arc-shaped grooves 23 of the two can surround and form an accommodating space. The inner diameter of the accommodating space at one end away from the rolling unit 30 gradually decreases toward the other end to match the outer diameter of the pipe 10, thereby forming a trumpet-shaped opening at the end of the accommodating space away from the rolling unit 30, which is convenient for guiding the pipe 10 to be positioned and fixed.

[0058] The first drive unit drives the first clamping die 21 and the second clamping die 22 toward or away from each other; when the first clamping die 21 and the second clamping die 22 are clamping the pipe 10, the arcuate groove 23 on the first clamping die 21 and the arcuate groove 23 on the second clamping die 22 are coaxial. By controlling the approach and separation of the first clamping die 21 and the second clamping die 22 by the first drive unit, the arcuate grooves 23 of the two clamping dies 21 and 22 are coaxial when clamping the pipe 10, thereby clamping and fixing the pipe 10 and ensuring that the pipe 10 is stable and does not shake during the rolling process. The coaxial clamping of the arcuate grooves 23 on the pipe 10 can prevent deformation of the pipe 10 or deviation in the rolling position due to offset of the clamping position, thereby ensuring processing accuracy.

[0059] like Figure 8 、 Figure 9 As shown, the rolling unit 30 includes a rotating shaft 31, a first roller 32 and a second roller 33; the first roller 32 and the second roller 33 are spaced apart along the axis of the rotating shaft 31; Figure 11 As shown, the distance between the first roller 32 and the second roller 33 is equal to the distance between the two avoidance grooves 24; the outer circumferential wall of the rotating shaft 31 is provided with a first receiving groove 311 and a second receiving groove 312; Figure 12As shown, the first accommodating groove 311 is used to accommodate the first roller 32; the second accommodating groove 312 is used to accommodate the second roller 33; the first roller 32 protrudes from the outer circumferential wall of the rotating shaft 31 by a first height; the second roller 33 protrudes from the outer circumferential wall of the rotating shaft 31 by a second height; the first height is greater than the second height. The rolling unit 30 is provided with a rotating shaft 31, a first roller 32 and a second roller 33, and the first roller 32 and the second roller 33 are spaced apart along the axis of the rotating shaft 31, and the spacing is consistent with the spacing of the avoidance groove 24. At the same time, a first accommodating groove 311 and a second accommodating groove 312 for accommodating the first roller 32 and the second roller 33 are respectively opened on the outer circumferential wall of the rotating shaft 31, so that the first roller 32 and the second roller 33 protrude from the outer circumferential wall of the rotating shaft 31 at different heights, and the first height is greater than the second height. By setting the protruding heights of the first roller 32 and the second roller 33 to be different, it is avoided that when the rotating shaft 31 is deflected, the first roller 32 and the second roller 33 are subjected to different rotational forces, resulting in different heights of the two rolled ribs during rolling forming.

[0060] The second drive unit rotates the rotating shaft 31; the distance between the first roller 32 and the second drive unit is greater than the distance between the second roller 33 and the second drive unit. As the second drive unit drives the rotating shaft 31, torque is transmitted through the rotating shaft 31 to the first and second rollers 32, 33, generating a compressive force that squeezes the inner wall of the pipe 10, forming raised ribs. Because the distance between the first roller 32 and the second drive unit is greater than the distance between the second roller 33 and the second drive unit, the torque loss transmitted to the first and second rollers 32, 33 is different. This results in the rotating shaft 31 generating different compressive forces on the first and second rollers 32, 33. The second roller 33, which is farther from the second drive unit, exerts less pressure on the inner wall of the pipe 10. Furthermore, the distance between the first roller 32 and the second drive unit, or the longer lever arm, makes the end of the rotating shaft 31, which is closer to the second drive unit, more susceptible to flexural deformation when subjected to the reaction force from the pipe 10. This further increases torque loss and reduces the compressive force of the first roller 32 on the pipe 10. Therefore, the present invention sets different protrusion heights for the first roller 32 and the second roller 33, thereby forming a compensation mechanism, so that the extrusion pressure of the first roller 32 and the second roller 33 on the pipe 10 is basically the same, and two rolling ribs of the same depth can be formed when the first roller 32 and the second roller 33 roll the pipe 10, meeting the rib making requirements of the pipe 10; reasonably setting the distance between the first roller 32 and the second roller 33 and the second driving unit can balance the loss of rotational torque and the compensation of extrusion force, making the rolling process more stable.

[0061] The third drive unit drives the rolling unit 30 to move. This allows the rolling unit 30 to move closer to or further away from the pipe 10, allowing for rolling and withdrawing operations on the pipe 10 and ensuring smooth reinforcement production. This configuration facilitates adjustment of the rolling unit 30's position based on the length of the pipe 10 and the reinforcement production location, improving the equipment's applicability.

[0062] In other embodiments, Figure 5 As shown, the pipe 10 clamped by the first clamping die 21 and the second clamping die 22 can be a curved tube or a straight tube. When clamping the pipe 10 , the present invention can make adaptive adjustments based on the structure of the pipe 10 .

[0063] In this embodiment, the rolling unit 30 further includes a first mounting shaft; Figure 4 As shown, a first mounting hole 313 is provided on the rotating shaft 31; the first mounting shaft is located in the first mounting hole 313; the first mounting shaft is detachably connected to the rotating shaft 31; the first receiving groove 311 and the second receiving groove 312 are respectively connected to the first mounting hole 313. The rolling unit 30 is provided with a first mounting shaft, the rotating shaft 31 has a first mounting hole 313, the first mounting shaft is located in the first mounting hole 313 and is detachably connected to the rotating shaft 31, and the first receiving groove 311 and the second receiving groove 312 are connected to the first mounting hole 313. The detachable connection between the first mounting shaft and the rotating shaft 31, as well as the connected receiving groove and mounting hole, facilitate the installation and removal of the first roller 32 and the second roller 33, and facilitate maintenance or replacement of the first roller 32 and the second roller 33. The structure in which the receiving groove and the mounting hole are connected enables the first roller 32 and the second roller 33 to be stably mounted on the rotating shaft 31 via the first mounting shaft, thereby ensuring transmission accuracy during rolling.

[0064] When the first roller 32 is located in the first receiving groove 311 and the second roller 33 is located in the second receiving groove 312, the first roller 32 and the second roller 33 are each coaxially connected to the first mounting axis. When the first roller 32 and the second roller 33 are located in the first receiving groove 311 and the second receiving groove 312, respectively, they are coaxially connected to the first mounting axis. This facilitates controlling the number of rotations of the rotating shaft 31 when the first roller 32 and the second roller 33 are simultaneously processing the pipe 10, ensuring the consistency of the formed bead. Furthermore, when the first roller 32 and the second roller 33 are processing the pipe 10, they can rotate about the first mounting axis, reducing circumferential wear on the first roller 32 and the second roller 33, thereby extending their service life. In other embodiments, when the first roller 32 and the second roller 33 have the same size, they can be mounted on different axes. This ensures that the protrusion heights of the first roller 32 and the second roller 33 are different, thereby ensuring the consistency of the double bead formed by roll forming.

[0065] In this embodiment, if Figure 4 、 Figure 12 As shown, the axis of the first mounting hole 313 is parallel to the axis of the rotating shaft 31, and there is a gap between them. This arrangement facilitates control of the protrusion height of the first roller 32 and the second roller 33, allowing the rollers to protrude from the outer circumference of the rotating shaft 31 to an appropriate height to meet the processing requirements of different bead heights. The design of the axis gap provides a structural basis for adjusting the roller protrusion height, allowing the equipment to adapt to various bead specifications.

[0066] In this embodiment, the angle between the axis of the first mounting hole 313 and the axis of the rotating shaft 31 is greater than 0° and less than 5°. The axis of the first mounting hole 313 and the axis of the rotating shaft 31 are located in the same plane, and the axial distance between the first mounting hole 313 and the rotating shaft 31 gradually increases in the direction away from the second drive unit. By tilting the first mounting hole 313 within the rotating shaft 31 and forming a slight angle with the axis of the rotating shaft 31, the cantilever deflection of the rotating shaft 31 during deflection is compensated. This prevents the first mounting hole 313 from tilting due to the bending of the cantilever of the rotating shaft 31, which could cause the first roller 32 and the second roller 33 to tilt. This ensures that the first roller 32 and the second roller 33 maintain their correct posture and sufficient extrusion force during the rolling process, thereby improving the stability of the bead rolling quality.

[0067] In this embodiment, if Figure 13 As shown, a second mounting hole 314 is provided on the rotating shaft 31; a third accommodating groove 315 and a fourth accommodating groove 316 are provided on the outer circumferential wall of the rotating shaft 31; the third accommodating groove 315 and the fourth accommodating groove 316 are spaced apart along the axis of the rotating shaft 31; the distance between the third accommodating groove 315 and the second driving unit is greater than the distance between the fourth accommodating groove 316 and the second driving unit; the third accommodating groove 315 and the fourth accommodating groove 316 are respectively connected to the second mounting hole 314; the distance between the third accommodating groove 315 and the fourth accommodating groove 316 is equal to the distance between the first accommodating groove 311 and the second accommodating groove 312; the third accommodating groove 315 is used to accommodate the first roller 32; the fourth accommodating groove 316 is used to accommodate the second roller 33. By setting a second mounting hole 314 and a corresponding accommodating groove, a second mounting shaft can be set in the second mounting hole 314, so that after the rotating shaft 31 has been used for a long time, when the cantilever deflection deformation is too large, the first roller 32 and the second roller 33 on the first mounting shaft can be installed to the second mounting shaft, and the installation position of the rollers can be changed, so that the protrusion height and the stress state of the first roller 32 and the second roller 33 can be adjusted, so as to extend the service life of the rolling unit 30 and avoid affecting the rolling accuracy of the roll forming due to the excessive cantilever deflection deformation of the rotating shaft 31.

[0068] In this embodiment, the rolling unit 30 further includes a second mounting shaft located within the second mounting hole 314 and detachably connected to the rotating shaft 31. This detachable second mounting shaft facilitates the installation of the first and second rollers 32, 33 within the second mounting hole 314, enabling switching of the roller mounting positions. If the cantilever of the rotating shaft 31 experiences excessive deformation, the mounting shaft and the receiving slot can be replaced, allowing the first and second rollers 32, 33 to continue functioning normally, thereby extending the service life of the rolling unit 30.

[0069] In other embodiments, Figure 12 、 Figure 13 As shown, a bolt hole 317 is defined at one end of the rotating shaft 31 away from the first roller. Multiple bolt holes 317 can be spaced apart along the circumference of the rotating shaft 31. One bolt hole 317 can communicate with the first mounting hole 313, and another bolt hole 317 can communicate with the second mounting hole 314. A locking bolt can be positioned within each bolt hole 317 and threadedly engaged with the bolt hole 317. One end of the locking bolt abuts against a radially extending side of the first mounting shaft and / or the second mounting shaft to secure the first and second mounting shafts.

[0070] In this embodiment, when the first roller 32 is located in the third receiving groove 315 and the second roller 33 is located in the fourth receiving groove 316, the first roller 32 and the second roller 33 are each coaxially connected to the second mounting shaft. When the first roller 32 and the second roller 33 are located in the third receiving groove 315 and the fourth receiving groove 316, respectively, they are coaxially connected to the second mounting shaft. This coaxial connection ensures that the first roller 32 and the second roller 33 can rotate stably in their new installation positions, ensuring the rotational accuracy and synchronization of the first roller 32 and the second roller 33 during the rolling process, thereby ensuring the quality of the formed bead.

[0071] In this embodiment, the axis of the second mounting hole 314 is parallel to the axis of the rotating shaft 31 and there is a gap between them. The axis of the second mounting hole 314 is parallel to the axis of the rotating shaft 31 and there is a gap between them. Since the first mounting hole 313 is pre-set to tilt in advance, the cantilever deflection deformation after long-term use can cause the axis of the first mounting hole 313 to approach the axis of the rotating shaft 31. At this time, the axis of the second mounting hole 314 gradually tilts, that is, the axis of the second mounting hole 314 and the axis of the rotating shaft 31 can gradually form an angle as the use time of the rolling unit 30 increases. When the first roller 32 and the second roller 33 are installed on the second mounting shaft, the above-mentioned setting can dynamically compensate for the cantilever deflection deformation of the rotating shaft 31, ensuring that the first roller 32 and the second roller 33 are each accurately installed in the second mounting hole 314. When the first roller 32 and the second roller 33 respectively abut against the inner wall of the pipe 10, the first height corresponding to the first roller 32 preset in advance is greater than the second height corresponding to the second roller 33, and the axis of the second mounting hole 314 is tilted under the influence of the cantilever deformation of the rotating shaft 31. This feature can effectively compensate for the defect that the first roller 32 and the second roller 33 have different rolling depths due to different torques, thereby ensuring the consistency of the height of the formed rolling rib protrusion and extending the service life of the rolling unit 30.

[0072] In other embodiments, the cross section of the rotating shaft 31 may be elliptical, thereby enhancing the compression resistance of the rotating shaft 31 and ensuring smooth rib rolling.

[0073] In other embodiments, Figure 10 As shown, the arc of the side of the rotating shaft 31 where the first and second rollers 32 and 33 are positioned is smaller than the arc of the side of the rotating shaft 31 facing away from the first and second rollers 32 and 33, and the arcs on both sides are not concentric. This prevents the rotating shaft 31 from interfering with the pipe opening when inserted into the pipe 10. Furthermore, the thickness of the side of the rotating shaft 31 facing away from the first and second rollers 32 and 33 is thicker than that of an elliptical shape, thereby enhancing the structural strength of the rotating shaft 31 and preventing the risk of severe deformation or fracture of the rotating shaft 31 due to excessive pressure during the beading process. Furthermore, this arrangement only requires cutting one side of the semi-finished cylindrical rotating shaft 31 to obtain the final rotating shaft 31, reducing the processing difficulty.

[0074] In this embodiment, a method for cooling pipe ribs is disclosed, and the method for cooling pipe ribs can be applied to the cooling pipe rib machine of any of the above embodiments. Figure 14 As shown, the cooling pipe rib method includes steps S10 to S50, and the above steps are described in detail below:

[0075] In step S10, based on the pipe 10 to be reinforced being positioned between the first clamping die 21 and the second clamping die 22, the first drive unit is controlled to drive the first clamping die 21 and the second clamping die 22 toward each other until the pipe 10 is clamped and positioned. When the pipe 10 is clamped and positioned, it is clamped in the arcuate grooves 23 between the first clamping die 21 and the second clamping die 22. This step secures the pipe 10 in place, providing a stable foundation for subsequent rolling reinforcement. Clamping and positioning the pipe 10 in the arcuate grooves 23 ensures that the axis of the pipe 10 is aligned with the axis of the equipment, ensuring the accuracy of the rolling position.

[0076] In step S20, based on the completion of the clamping and positioning of the pipe 10, the third driving unit is controlled to drive the rolling unit 30 to move toward the inside of the pipe 10 until the rolling unit 30 moves to a preset position; wherein, when the rolling unit 30 is in the preset position, the rotating shaft 31 and the pipe 10 are eccentrically arranged, the first roller 32 and the second roller 33 are located on the side of the axis of the rotating shaft 31 close to the axis of the pipe 10, and the distance between the rotating shaft 31 and the inner wall of the pipe 10 is less than the first height; the distance between the rotating shaft 31 and the inner wall of the pipe 10 is less than the second height. After the pipe 10 is clamped and positioned, the third driving unit is controlled to drive the rolling unit 30 to move to a preset position inside the pipe 10, so that the rotating shaft 31 is eccentrically arranged with the pipe 10, and the first roller 32 and the second roller 33 are located on the side of the rotating shaft 31 close to the axis of the pipe 10, and the distance between the side of the rotating shaft 31 away from the axis of the pipe 10 and the inner wall of the pipe 10 can be less than the first height and the second height. By moving the rolling unit 30 to the preset eccentric position, the first roller 32 and the second roller 33 can contact and apply pressure to the inner wall of the pipe 10 when the rotating shaft 31 rotates, preparing for rolling ribs; the eccentric setting of the rotating shaft 31 and the spacing less than the second height ensure that the first roller 32 and the second roller 33 can cut into the surface of the pipe 10 to form an extrusion force, thereby squeezing to form the required rolling rib structure.

[0077] In step S30, based on the rolling unit 30 being in the preset position, the second drive unit is controlled to rotate the rolling unit 30 about the axis of the arcuate groove 23. The rotating rolling unit 30 causes the first roller 32 and the second roller 33 to roll the inner wall of the tube 10, thereby forming the desired bead structure on the surface of the tube 10. This rotational motion ensures uniform and continuous beading, improving bead quality.

[0078] In step S40, upon the rolling unit 30 rotating for a predetermined time, the third drive unit is controlled to drive the rolling unit 30 to disengage from the pipe 10. By setting the rotation time, the rolling process is ensured to be complete, and the bead is promptly disengaged from the pipe 10 after reaching the predetermined depth and shape. This prevents excessive rolling from damaging the pipe 10 or affecting production efficiency.

[0079] In step S50, upon the roll unit 30 being released from the pipe 10, the first drive unit is controlled to move the first clamping die 21 and the second clamping die 22 away from each other, completing the reinforcement process. After the roll unit 30 is released from the pipe 10, the first drive unit is controlled to move the first clamping die 21 and the second clamping die 22 away from each other, removing the reinforced pipe 10. By sequentially completing the steps of clamping, rolling, withdrawing, and releasing, the reinforcement process is automatically completed, completing the entire reinforcement process. The orderly execution of these steps ensures the consistency and efficiency of the reinforcement process.

[0080] In this embodiment, a second mounting hole 314 is defined on the rotating shaft 31; a third receiving groove 315 and a fourth receiving groove 316 are defined on the outer circumferential wall of the rotating shaft 31; the rolling unit 30 further includes a second mounting shaft; the second mounting shaft is located in the second mounting hole 314; the second mounting shaft is detachably connected to the rotating shaft 31; step S20 may include steps S21 to S25, and the above steps may be described in detail below:

[0081] Step S21: Based on the completion of the clamping and positioning of the pipe 10, the use state and usage time of the rolling unit 30 are obtained. The use state includes a first state and a second state. In the first state, the first roller 32 is located in the first receiving groove 311, and the second roller 33 is located in the second receiving groove 312. In the second state, the first roller 32 is located in the third receiving groove 315, and the second roller 33 is located in the fourth receiving groove 316. By obtaining the use state and usage time of the rolling unit 30, the wear of the rolling unit 30 can be determined, providing a basis for whether to switch the state. Clarifying the installation positions of the first roller 32 and the second roller 33 in the two use states facilitates state switching according to actual conditions, rationally utilizes the equipment structure, and extends the service life of the rolling unit 30.

[0082] Step S22: Based on the rolling unit 30 being in the first state and the usage time being less than the first service life, execute step S25. When the rolling unit 30 is in the first state (the first roller 32 is in the first receiving groove 311 and the second roller 33 is in the second receiving groove 312) and the usage time is less than the first service life, the step of driving the rolling unit 30 to move to the preset position is directly executed. By determining the relationship between the usage time and the service life, if the rolling unit 30 has not reached the first service life, the first state is continued for processing, thereby fully utilizing the normal usage cycle of the equipment and avoiding premature state switching that affects production efficiency.

[0083] Step S23: Based on the rolling unit 30 being in the first state and having been in use for longer than the first service life, the rolling unit 30 is adjusted to the second state. When the rolling unit 30 is in the first state and has been in use for longer than the first service life, it is adjusted to the second state (with the first roller 32 in the third receiving groove 315 and the second roller 33 in the fourth receiving groove 316). By switching to the second state after the service life of the first state expires, and utilizing different roller installation positions, the effects of cantilever deformation caused by prolonged use are avoided, thereby extending the overall service life of the rolling unit 30.

[0084] In step S24, based on the rolling unit 30 switching to the second state, step S25 is executed. After the rolling unit 30 switches to the second state, the step of driving the rolling unit 30 to move to the preset position is executed. By executing subsequent operations in a timely manner, the continuity of the rib production process after the state switch is ensured, ensuring smooth production. Processing continues after the state switch, realizing the rational use of the different installation positions of the rolling unit 30.

[0085] Step S25, control the third driving unit to drive the rolling unit 30 to move toward the inside of the pipe 10 until the rolling unit 30 moves to a preset position; wherein, when the rolling unit 30 is in the preset position, the rotating shaft 31 and the pipe 10 are eccentrically arranged, the first roller 32 and the second roller 33 are located on the side of the axis of the rotating shaft 31 close to the axis of the pipe 10, and the distance between the rotating shaft 31 and the inner wall of the pipe 10 is less than the first height; the distance between the rotating shaft 31 and the inner wall of the pipe 10 is less than the second height. The third driving unit is controlled to drive the rolling unit 30 to move to a preset eccentric position, so that the first roller 32 and the second roller 33 can be rotated by the rotating shaft 31 to contact the inner wall of the pipe 10. By moving the rolling unit 30 to the preset position in different states, it is ensured that no matter whether the first roller 32 and the second roller 33 are in the first state or the second state, the pipe 10 can be accurately rolled and ribbed, thereby ensuring the consistency of the processing technology; the eccentric setting and spacing requirements of the rotating shaft 31 ensure that the rollers can effectively roll the pipe 10 to form ribs that meet the requirements.

[0086] Step S40 may include: Step S41, based on the rotation time of the rolling unit 30 reaching a preset time, controlling the third drive unit to drive the rolling unit 30 to disengage from the pipe 10; and accumulating the preset time as the usage time of the rolling unit 30. When the rotation time of the rolling unit 30 reaches the preset time, it is controlled to disengage from the pipe 10, and the time is accumulated as the usage time. By accumulating the usage time, the working time of the rolling unit 30 can be accurately recorded, providing data support for determining its service life and state switching. The timely disengagement of the rolling unit 30 from the pipe 10 and the accumulation of time ensure the accuracy of the production process and the timeliness of equipment maintenance.

[0087] In this embodiment, step S24 may include: step S241, executing step S25 based on the rolling unit 30 switching to the second state and the usage time being less than the second service life; wherein the second service life is greater than the first service life. When the rolling unit 30 switches to the second state and the usage time is less than the second service life, executing the step of driving the rolling unit 30 to move to a preset position. Since the second service life is greater than the first service life, continued use in the second state further extends the overall service life of the rolling unit 30, reduces replacement frequency, and thus extends the service life of the rolling unit 30 and reduces production costs. When the usage time is greater than the first service life, the rotating shaft 31 deflects near the first roller 32. At this time, the second state is switched. Since the second mounting hole 314 is parallel to the axis of the rotating shaft 31, the rotating shaft 31 has already deflected, resulting in a deeper theoretical rolling depth for the first roller 32. This allows for compensating for the extrusion force, bringing the actual rolling depths of the first and second rollers 32, 33, closer together, thereby improving the consistency of the double beading.

[0088] In this embodiment, step S24 may further include: step S242, based on the rolling unit 30 switching to the second state and the usage time exceeding the second service life, issuing a signal to replace the rolling unit 30. When the rolling unit 30 switches to the second state and the usage time exceeds the second service life, the replacement signal is issued. By setting a service life threshold and issuing the replacement signal, excessive wear of the rolling unit 30 is easily detected and replaced in a timely manner, thereby ensuring the production qualification rate of the pipe fittings 10 and avoiding the production of substandard products due to equipment wear.

[0089] It should be understood that the “present embodiment” mentioned in the present invention is based on the technical points currently described, and multiple “present embodiments” may be the same embodiment or different embodiments.

[0090] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and that in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A cooling tube rib machine, characterized in that: The cooling tube rib machine comprises: A positioning unit comprising a first clamping die and a second clamping die; both the first clamping die and the second clamping die are provided with an arcuate groove; the arcuate groove is used to accommodate a pipe; the inner circumferential wall of the arcuate groove is provided with two arcuate avoidance grooves; the avoidance grooves are coaxial with the arcuate groove; a first driving unit, wherein the first driving unit drives the first clamping die and the second clamping die to move closer to or farther from each other; when the first clamping die and the second clamping die are clamping the pipe, the arcuate groove on the first clamping die is coaxial with the arcuate groove on the second clamping die; A rolling unit, the rolling unit comprising a rotating shaft, a first roller and a second roller; the first roller and the second roller are spaced apart along the axis of the rotating shaft; the distance between the first roller and the second roller is equal to the distance between the two avoidance grooves; a first accommodating groove and a second accommodating groove are formed on the outer circumferential wall of the rotating shaft; the first accommodating groove is used to accommodate the first roller; the second accommodating groove is used to accommodate the second roller; the first roller protrudes from the outer circumferential wall of the rotating shaft by a first height; the second roller protrudes from the outer circumferential wall of the rotating shaft by a second height; the first height is greater than the second height; a second driving unit, wherein the second driving unit drives the rotating shaft to rotate; a distance between the first roller and the second driving unit is greater than a distance between the second roller and the second driving unit; a third driving unit, wherein the third driving unit drives the rolling unit to move; The rolling unit further includes a first mounting shaft; a first mounting hole is formed on the rotating shaft; the first mounting shaft is located in the first mounting hole; the first mounting shaft is detachably connected to the rotating shaft; the first receiving groove and the second receiving groove are respectively connected to the first mounting hole; When the first roller is located in the first receiving groove and the second roller is located in the second receiving groove, the first roller and the second roller are coaxially connected to the first mounting shaft respectively; The angle between the axis of the first mounting hole and the axis of the rotating shaft is greater than 0° and less than 5°, the axis of the first mounting hole and the axis of the rotating shaft are located in the same plane, and the axial distance between the first mounting hole and the rotating shaft gradually increases in the direction away from the second drive unit.

2. A cooling tube rib machine according to claim 1, characterized in that: A second mounting hole is provided on the rotating shaft; a third accommodating groove and a fourth accommodating groove are provided on the outer circumferential wall of the rotating shaft; the third accommodating groove and the fourth accommodating groove are spaced apart along the axis of the rotating shaft; the distance between the third accommodating groove and the second driving unit is greater than the distance between the fourth accommodating groove and the second driving unit; the third accommodating groove and the fourth accommodating groove are respectively connected to the second mounting hole; the distance between the third accommodating groove and the fourth accommodating groove is equal to the distance between the first accommodating groove and the second accommodating groove; the third accommodating groove is used to accommodate the first roller; the fourth accommodating groove is used to accommodate the second roller; The rolling unit further includes a second mounting shaft; the second mounting shaft is located in the second mounting hole; the second mounting shaft is detachably connected to the rotating shaft; When the first roller is located in the third accommodating groove and the second roller is located in the fourth accommodating groove, the first roller and the second roller are coaxially connected to the second mounting shaft respectively.

3. A cooling tube rib machine according to claim 2, characterized in that: The axis of the second mounting hole is parallel to the axis of the rotating shaft and has a distance therebetween.

4. A method for cooling pipe ribs, applied to the cooling pipe rib machine according to any one of claims 1 to 3; characterized in that: The cooling pipe rib method includes: Step S10: Based on the pipe to be reinforced being located between the first clamping die and the second clamping die, controlling the first driving unit to drive the first clamping die and the second clamping die toward each other until the pipe is clamped and positioned; wherein, when the pipe is clamped and positioned, the pipe is clamped in the arc-shaped grooves of the first clamping die and the second clamping die; Step S20: Based on the completion of the clamping and positioning of the pipe, controlling the third driving unit to drive the rolling unit to move toward the inside of the pipe until the rolling unit moves to a preset position; wherein, when the rolling unit is in the preset position, the rotating shaft is eccentrically arranged with respect to the pipe, the first roller and the second roller are located on a side of the axis of the rotating shaft close to the axis of the pipe, and the distance between the rotating shaft and the inner wall of the pipe is less than the first height; and the distance between the rotating shaft and the inner wall of the pipe is less than the second height; Step S30, based on the rolling unit being located at the preset position, controlling the second driving unit to drive the rolling unit to rotate around the axis of the arc groove; Step S40: Based on the rotation time of the rolling unit reaching a preset time, controlling the third driving unit to drive the rolling unit to separate from the pipe; Step S50 : Based on the rolling unit being separated from the pipe, the first driving unit is controlled to drive the first clamping die and the second clamping die to move away from each other, and the rib making is completed.

5. A cooling pipe rib method according to claim 4, characterized in that: A second mounting hole is provided on the rotating shaft; a third receiving groove and a fourth receiving groove are provided on the outer circumferential wall of the rotating shaft; the rolling unit further comprises a second mounting shaft; the second mounting shaft is located in the second mounting hole; the second mounting shaft is detachably connected to the rotating shaft; The step S20 includes: Step S21: Based on the completion of the clamping and positioning of the pipe fitting, the use state and use time of the rolling unit are obtained; wherein the use state includes a first state and a second state; in the first state, the first roller is located in the first receiving groove, and the second roller is located in the second receiving groove; in the second state, the first roller is located in the third receiving groove, and the second roller is located in the fourth receiving groove; Step S22: Based on the rolling unit being in the first state and the usage time being less than the first service life, executing step S25; Step S23: Based on the rolling unit being in the first state and the usage time being greater than the first service life, adjusting the rolling unit to the second state; Step S24, based on the rolling unit switching to the second state, executing step S25; Step S25: Controlling the third driving unit to drive the rolling unit to move toward the interior of the pipe until the rolling unit moves to a preset position; wherein, when the rolling unit is in the preset position, the rotating shaft is eccentrically arranged with respect to the pipe, the first roller and the second roller are located on a side of the rotating shaft that is closer to the axis of the pipe, and the distance between the rotating shaft and the inner wall of the pipe is less than the first height; and the distance between the rotating shaft and the inner wall of the pipe is less than the second height; The step S40 includes: Step S41: based on the rotation time of the rolling unit reaching a preset time, controlling the third driving unit to drive the rolling unit to separate from the pipe; and accumulating the preset time as the usage time of the rolling unit.

6. A cooling pipe rib method according to claim 5, characterized in that: The step S24 includes: Step S241: Based on the rolling unit switching to the second state and the usage time being less than the second service life, execute step S25; wherein, the second service life is greater than the first service life.

7. A method for cooling pipe ribs according to claim 6, characterized in that: The step S24 further includes: Step S242: Based on the rolling unit switching to the second state and the usage time being greater than the second service life, a signal for replacing the rolling unit is issued.

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