Automatic pipe mold tensioning device

Abstract

The present application discloses an automatic pipe mold tensioning device, comprising a pipe mold nut tightening mechanism for locking the pipe mold nut, a tensioning head mechanism for connecting the pipe mold tensioning screw, a cylinder tensioning mechanism connected to the tensioning head mechanism to provide tensioning force, a tail nut tightening mechanism for tightening the tensioning head mechanism and the cylinder tensioning mechanism, a tensioning head driving mechanism for driving the tensioning head mechanism to move forward and backward along the X direction, and a pipe mold in-place detection mechanism for detecting the pipe mold in-place status; the tensioning head mechanism is provided with a tensioning head for connecting the pipe mold tensioning screw, and the tensioning head is provided with a forward and backward movement degree of freedom along the X direction, an up and down movement degree of freedom along the Z direction, and a pitching and swinging degree of freedom with the Y direction as the rotation axis, so that the front end of the tensioning head is coaxially connected with the pipe mold tensioning screw, thereby solving the problem of high meshing and docking failure rate caused by different axes of the pipe pile screw and the tensioning head.

Description

Technical Field

[0001] The present application provides an automatic pipe mold tensioning device, which relates to the technical field of construction engineering. Background Art

[0002] As a cement product, concrete piles are widely used in various infrastructure projects. Prestressing is an important production link of concrete piles. Its function is to apply prestressing stress to the steel cage inside the concrete piles before the concrete piles are subjected to external loads, thereby improving the bending resistance and rigidity of the piles, delaying the appearance of cracks, and increasing the durability of the concrete piles. Figure 1 The tensioning process is as follows: the tube mold end plate 13 is relatively stationary, and the tube mold tensioning screw 12 is tensioned by the tensioning machine. After the tensioning is completed, the tube mold tensioning screw 12 is locked by the tube mold nut 11 to lock the tensioning force.

[0003] In order to improve the automation of pipe pile tensioning equipment and avoid manual operation, the existing technology "CN210500789U prestressed pipe pile automatic tensioning equipment" provides a multi-model prestressed pipe pile automatic tensioning equipment, which is aligned through the control of the machine and the action of the mobile lifting platform; the working accuracy of the equipment is improved through the action of the tensioning machine floating device and the tensioning docking locking device, the cylinder nut automatic tightening device, and the pipe pile nut automatic tightening device. However, since the alignment cannot be guaranteed to be completely accurate, it was found that the equipment had a high failure rate in meshing and docking with the pipe mold tensioning screw when using this type of automatic tensioning equipment on site, and the maintenance and handling after the failure was difficult and had a long processing time, which was not conducive to production stability. Summary of the invention

[0004] The technical problem to be solved by the present application is the high failure rate of meshing and docking between the automatic tensioning equipment and the tensioning screw of the pipe mold.

[0005] In order to solve the above technical problems, the present application provides an automatic tensioning device for a pipe mold, with the axial direction of the device as the X direction, the vertical direction as the Z direction, a Y direction perpendicular to the X direction and the Z direction, the X direction close to the pipe mold as the front end, and the rear end away from the pipe mold as the back end, the pipe mold includes a pipe mold end plate, a pipe mold tensioning screw and a pipe mold nut sleeved on the pipe mold tensioning screw, the automatic tensioning device for the pipe mold includes a pipe mold nut tightening mechanism for locking the pipe mold nut, a tensioning head mechanism for connecting the pipe mold tensioning screw, and a connecting screw. The tensioning head mechanism provides a cylinder tensioning mechanism with tensioning force, a tail nut tightening mechanism for tightening the tensioning head mechanism and the cylinder tensioning mechanism, a tensioning head driving mechanism for driving the tensioning head mechanism to move forward and backward along the X direction, and a pipe mold in-place detection mechanism for detecting the pipe mold in-place status; the pipe mold nut tightening mechanism, tensioning head mechanism, cylinder tensioning mechanism and tail nut tightening mechanism are coaxially arranged; the pipe mold nut tightening mechanism, tensioning head mechanism and tail nut tightening mechanism move forward and backward relative to the axial direction of the cylinder tensioning mechanism;

[0006] The tensioning head mechanism is provided with a tensioning head for docking with the tube mold tensioning screw. The tensioning head is provided with the freedom of forward and backward movement along the X direction, the freedom of up and down movement along the Z direction and the freedom of pitching and swinging with the Y direction as the rotation axis, so that the front end of the tensioning head is coaxially docked with the tube mold tensioning screw.

[0007] Wherein, the oil cylinder tensioning mechanism is provided with at least three lifting rings, which are connected to the lifting and moving equipment to move to the vicinity of the end of the pipe mold.

[0008] Preferably, the cylinder tensioning mechanism comprises a through-type tensioning cylinder, a center screw is passed through the center of the through-type tensioning cylinder, a tensioning head sleeve is provided at the front end of the center screw for movably connecting the tensioning head, the rear end of the tensioning head is set as a plum blossom-shaped structure, the tensioning head sleeve is set as a plum blossom-shaped tensioning head sleeve, and the rear end of the center screw is provided with a handwheel for rotating the center screw to lock the tensioning head and the tensioning head sleeve.

[0009] Preferably, the tensioning head twisting mechanism also includes a tensioning head rotating bearing seat, the tensioning head rotating bearing seat is internally provided with a tensioning head fixed seat via a bearing connection, the tensioning head is connected to the tensioning head fixed seat via a set of quick-release pin handles; the tensioning head fixed seat is connected to a second motor reducer via a sprocket; a pair of side connecting plates are provided on the left and right sides of the tensioning head rotating bearing seat, and a pair of front and rear sliding copper sleeves are provided on the upper and lower sides of the side connecting plates, the front and rear sliding copper sleeves are provided on the front guide shaft fixed to the through-type tensioning cylinder body, a vertical guide shaft is fixed on the side connecting plate, and the The vertical guide shaft is sleeved with an up and down sliding copper sleeve, the up and down sliding copper sleeve is fixedly connected with a floating mounting seat, the floating mounting seat is provided with a rotating copper sleeve, the rotating copper sleeve takes the Y-axis as the rotation axis, the rotating copper sleeve is connected with a swing seat, and the swing seat is fixedly connected to the rotating bearing seat of the tensioning head; the pitching swing of the tensioning head with the Y-axis as the rotation axis is realized by the cooperation between the swing seat and the rotating copper sleeve, the up and down movement of the tensioning head on the Z-axis is realized by the cooperation between the up and down sliding copper sleeve and the vertical guide shaft, and the forward and backward movement of the tensioning head on the X-axis is realized by the cooperation between the front and rear sliding copper sleeve and the front guide shaft.

[0010] Preferably, the tensioning head twisting mechanism further includes a first actuating cylinder for driving the tensioning head to move up and down and a second actuating cylinder for driving the tensioning head to pitch and swing.

[0011] Preferably, the tensioning pull head driving mechanism comprises a front and rear actuating cylinder, and the actuating ends of the front and rear actuating cylinders are connected to the tensioning pull head mechanism via a connecting piece to drive the tensioning pull head mechanism to move forward and backward.

[0012] Preferably, the tail nut tightening mechanism includes a nut sleeved on the center screw, and the nut is located at the rear end direction of the through-type tensioning cylinder; the tail nut tightening mechanism also includes a nut rotating bearing seat, the nut rotating bearing seat is connected to the nut through a bearing, and the nut is connected to the fourth motor reducer through a sprocket; the center screw and the through-type tensioning cylinder are controlled to be tightened or loosened by rotating the nut.

[0013] Preferably, the cylinder tensioning mechanism also includes a proximity switch, a laser ranging sensor and a reflected light curtain, and the proximity switch, laser ranging sensor and reflected light curtain extend to the front end of the device through a frame fixed on the through-type tensioning cylinder body, the laser ranging sensor is used to detect the distance between the device and the pipe mold end plate, and the reflected light curtain is vertically arranged to detect the actual height position of the pipe mold tensioning screw.

[0014] Preferably, the tube mold nut tightening mechanism includes a first motor reducer, a nut sleeve rotating bearing seat, a nut tightening sleeve and a sprocket. The nut sleeve rotating bearing seat is connected to the nut tightening sleeve via a bearing, and the nut tightening sleeve is connected to the first motor reducer via the sprocket; the nut tightening sleeve is hollow and docked with the tube mold nut.

[0015] Preferably, the tube mold in place detection mechanism is arranged at the front end of the tensioning device, and the tube mold in place detection device includes a spring push plate, a spring, a linear bearing seat, a guide shaft and an induction sheet metal; the spring push plate, guide shaft and induction sheet metal are connected and fixed as a whole, and slide in the linear bearing seat, and the spring is sleeved on the guide shaft, so that the spring push plate slides when it is pressed against the tube mold end plate and is kept in contact with the tube mold end plate by the spring rebound force, and the induction sheet metal is used to detect whether the tensioning device and the tube mold are in place.

[0016] The tensioning head mechanism provided in the present solution solves the problem of high meshing and docking failure rate caused by different axes of the pile screw and the tensioning head by the up and down floating of the floating mounting seat and the sliding copper sleeve on the guide shaft and the rotation of the swinging seat in the floating mounting seat and the rotating copper sleeve. Both the tensioning head device and the nut tightening device are designed with indexing pin quick-release handles, and the nut sleeve and the plum blossom tensioning head can be quickly disassembled and withdrawn by opening and closing the indexing pin handle, thereby solving the defect that the equipment maintenance is difficult and the processing time is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the end of the tube mold;

[0018] Figure 2 This is a schematic diagram of the overall assembly structure of the automatic tensioning device for a pipe mold provided in an embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the structure of the oil cylinder tensioning mechanism provided in the embodiment of the present application;

[0020] Figure 4 A schematic diagram of the partial structure of the oil cylinder tensioning mechanism provided in an embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of the structure of the tube mold nut tightening mechanism provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the partial structure of the tube die nut tightening mechanism provided in an embodiment of the present application;

[0023] Figure 7 This is a schematic diagram of the structure of the twisting and tensioning pull head mechanism provided in an embodiment of the present application;

[0024] Figure 8The local structure diagram of the twisting and tensioning pull head mechanism provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0025] Fig. 9 The local structure diagram of the twisting and tensioning pull head mechanism provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0026] Fig.10 This is a schematic diagram of the tail nut tightening mechanism structure provided in an embodiment of the present application;

[0027] Fig.11 This is a schematic diagram of the structure of the twisting and tensioning pull head driving mechanism provided in an embodiment of the present application;

[0028] Fig.12 This is a schematic diagram of the structure of a pipe mold in-place detection machine provided in an embodiment of the present application;

[0029] Description of reference numerals:

[0030] Tube mold nut 11, tube mold tensioning screw 12, tube mold end plate 13,

[0031] Tube mold nut tightening mechanism 100, side plate 101, sliding copper sleeve 102, first motor reducer 103, nut sleeve rotating bearing seat 104, nut tightening sleeve 105, sprocket 106, quick release pin handle 107,

[0032] The tensioning head mechanism 200, the first action cylinder 201, the spring baffle 202, the floating mounting seat 203, the vertical guide shaft 204, the second action cylinder 205, the front and rear sliding copper sleeve 206, the second motor reducer 207, the tensioning head rotating bearing seat 208, the up and down sliding copper sleeve 209, the plum blossom tensioning head 210, the side connecting plate 211, the rotating copper sleeve 212, the tensioning head fixed seat 213, the swing seat 214, the proximity switch 215, the quick release pin handle 216, the spring 217,

[0033] Cylinder tensioning mechanism 300, tail guide shaft 301, hand wheel 302, center screw 303, first pull wire displacement sensor 304, first lifting ring 305, second pull wire displacement sensor 306, second lifting ring 307, laser distance sensor 308, reflected light curtain 309, proximity switch 310, front guide shaft 311, compression spring 312, through-type tensioning cylinder 313, driving cylinder 314, sliding copper sleeve 315, tail push plate 316, plum blossom tensioning head sleeve 317,

[0034] Tail nut tightening mechanism 400, fourth motor reducer 401, sliding copper sleeve 402, nut rotating bearing seat 403, sprocket 404, nut 405,

[0035] The tensioning pull head driving mechanism 500, the front and rear action cylinder 501, the copper sleeve 502, the connecting piece 503, the tube mold in place detection mechanism 600, the spring push plate 601, the spring 602, the linear bearing seat 603, the guide shaft 604, and the induction sheet metal 605. DETAILED DESCRIPTION

[0036] To make the application more obvious and easy to understand, various exemplary embodiments will be introduced below. These examples are non-limiting, and it should be understood that they are used for the more general application aspects of the illustrative device, system and method. Without departing from the substantive content and scope of the application, these embodiments can be subjected to multiple changes, and can be replaced by equivalents. In addition, multiple changes can be carried out to adapt to the purpose, content or scope of the application in order to adapt to special situations, materials, material components, treatment types, treatment actions or steps. All these changes will be within the protection scope of the application.

[0037] For any materials, dimensions, quantities introduced in the overview or detailed description, they will be examples only and are not intended to limit the subject matter of the present application. Moreover, the various implementations of the embodiments described herein will complement each other, rather than purely interchangeably, unless otherwise indicated. In other words, implementations from one embodiment can be freely combined with implementations of other embodiments, as those of ordinary skill in the art will readily appreciate, unless it is indicated that these implementations are only for replacement.

[0038] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Example

[0041] The present application embodiment provides a pipe mold automatic tensioning device, see Figure 1 and Figure 2The automatic tube mold tensioning device comprises a tube mold nut tightening mechanism 100, a tensioning head mechanism 200, a cylinder tensioning mechanism 300, a tail nut tightening mechanism 400, a tensioning head driving mechanism 500 and a tube mold in-place detection mechanism 600.

[0042] Among them, the nut tightening mechanism 100 and the tensioning head mechanism 200 are arranged on the cylinder tensioning mechanism 300 near the front end (when docking, the front end in the X direction shown in the figure is close to the pipe mold, the X and Y directions in the figure represent the horizontal front and back, left and right, respectively, and the Z direction in the figure represents the vertical up and down); the nut tightening mechanism 100 is used to dock with the pipe mold nut 11, and loosen or tighten the pipe mold nut. The tensioning head mechanism 200 is used to dock with the pipe mold tensioning screw 12, and transmit the tensioning force to the pipe mold tensioning screw by connecting with the pipe mold tensioning screw. The tail nut tightening mechanism 400 is used to tighten the cylinder tensioning mechanism 300 after the tensioning head mechanism 200 is docked with the pipe mold tensioning screw 12, so that the cylinder actuation tensioning force is transmitted to the tensioning head mechanism 200. In the automatic tube mold tensioning device provided by the present application, the tensioning pull head mechanism 200 adopts a floating design, which includes the freedom of movement in the X direction, and the tensioning pull head driving mechanism 500 is used to drive the tensioning pull head mechanism 200 to move linearly in the X direction. The tube mold in-place detection mechanism 600 is used to detect whether the device is in place with the tube mold end plate 13.

[0043] In a specific embodiment, see Figure 3 , Figure 4 The cylinder tensioning mechanism 300 includes a tail guide shaft 301, a hand wheel 302, a center screw 303, a first pull-wire displacement sensor 304, a first lifting ring 305, a second pull-wire displacement sensor 306, a second lifting ring 307, a laser ranging sensor 308, a reflected light curtain 309, a proximity switch 310, a front guide shaft 311, a compression spring 312, a through-type tensioning cylinder 313, a driving cylinder 314, a sliding copper sleeve 315, a tail push plate 316, and a plum blossom tensioning head sleeve 317.

[0044] The first lifting ring 305 and the second lifting ring 307 are respectively arranged on the main body of the through-type tensioning cylinder 313 and on the frame fixed to the main body of the through-type tensioning cylinder 313. A plurality of first lifting rings 305 and second lifting rings 307 can be arranged for connecting with other lifting equipment, mobile equipment and lifting rings to realize the lifting and left and right, front and back movement of the tensioning device and move it to a position close to the pipe mold. The tensioning device is more convenient to use and has a wide range of applications and can be applied to the tensioning of pipe molds of various specifications.

[0045] The central screw 303 passes through the through-type tensioning cylinder 313, and a plum blossom tensioning head sleeve 317 is provided at the front end, and a tail push plate 316 and a hand wheel 302 are provided at the rear end. The twisting tensioning head mechanism 200 is provided with a plum blossom tensioning head 210, and the plum blossom tensioning head sleeve 317 is movably connected with the plum blossom tensioning head 210 based on the profiling structure. The tail push plate 316 is sleeved on the central screw 303 and a group of sliding copper sleeves 315 are provided on the tail push plate 316. The sliding copper sleeve 315 is sleeved on the tail guide shaft 301 and can slide along the tail guide shaft 301 while limiting the tail push plate 316. 16 radial rotation, the central screw 303, plum blossom tensioning head sleeve 317, tail push plate 316, sliding copper sleeve 315 and hand wheel 302 are connected to form a whole and slide forward and backward relative to the inner hole of the through-type tensioning oil cylinder 313. The driving cylinder 314 is used to drive and control the sliding of the tail push plate 316 on the tail guide shaft 301. The tail guide shaft 301 is provided with a group of piston end faces fixed on the through-type tensioning oil cylinder 313. The driving cylinder 314 is also fixed on the piston end face of the through-type tensioning oil cylinder 313, and the action end is connected to the tail push plate 316. The first pull-wire displacement sensor 304 is provided with multiple ones, which are arranged on the main body of the through-type tensioning oil cylinder 313, and are respectively used to detect the extension length of the cylinder piston and the position of the tail nut tightening mechanism 400. The proximity switch 310, the laser distance sensor 308, and the reflected light curtain 309 are fixed on the main body of the through-type tensioning cylinder 313 through a frame and extend to the front end of the entire device. The frame is used to abut against the tube mold end plate 13, the proximity switch 310 is used to prompt approach, the laser distance sensor 308 is used to detect the distance between the device and the tube mold end plate 13, and the reflected light curtain 309 is vertically arranged to detect the actual height position of the tube mold tensioning screw 12. The first pull-wire displacement sensor 304 and the second pull-wire displacement sensor 306 are used to detect the positions of the tube mold nut tightening mechanism 100 and the tail nut tightening mechanism 400, respectively.

[0046] In a specific embodiment, see Figure 5 , Figure 6 The pipe mold nut tightening mechanism 100 is arranged on the front guide shaft 311 near the front end of the cylinder tensioning mechanism 300 and can move forward and backward; the pipe mold nut tightening mechanism 100 includes a side plate 101, a sliding copper sleeve 102, a first motor reducer 103, a nut sleeve rotating bearing seat 104, a nut tightening sleeve 105, a sprocket 106, and a quick release pin handle 107.

[0047] A pair of side plates 101 are arranged on the left and right sides of the nut sleeve rotating bearing seat 104 and fixed by bolts. A pair of sliding copper sleeves 102 distributed up and down are arranged on the side plates 101, and the sliding copper sleeves 102 are sleeved on the front guide shaft 311; a bearing is arranged in the nut sleeve rotating bearing seat 104, and a hollow nut tightening sleeve 105 is connected in the bearing. The nut tightening sleeve 105 is connected to the first motor reducer 103 via a sprocket 106, and the sprocket 106 is driven by the motor to drive the nut tightening sleeve 105 to rotate. When docking with the pipe mold, the pipe mold tensioning screw 12 passes through the center of the nut tightening sleeve 105, and the nut tightening sleeve 105 is docked with the pipe mold nut 11 for rotating to tighten or loosen the pipe mold nut 11.

[0048] In a further embodiment, three quick-release pin handles 107 are provided on the nut tightening sleeve 105. The three quick-release pin handles 107 limit the axial position of the nut tightening sleeve 105 on the sprocket by opening and closing. The nut tightening sleeve 105 can be quickly disassembled and replaced by opening and closing the quick-release pin handles 107, which reduces the maintenance difficulty and reduces the maintenance time; and the nut tightening sleeve 105 protrudes from the front end of the nut sleeve rotating bearing seat 104, which is convenient for docking with the pipe mold nut 11.

[0049] In a specific embodiment, see Figure 7 , Figure 8 and Fig. 9 The tensioning head mechanism 200 is arranged on the front guide shaft 311 near the front end of the cylinder tensioning mechanism 300 and can move forward and backward; the tensioning head mechanism 200 includes a first actuating cylinder 201, a spring baffle 202, a floating mounting seat 203, a vertical guide shaft 204, a second actuating cylinder 205, a front and rear sliding copper sleeve 206, a second motor reducer 207, a tensioning head rotating bearing seat 208, an up and down sliding copper sleeve 209, a plum blossom tensioning head 210, a side connecting plate 211, a rotating copper sleeve 212, a tensioning head fixed seat 213, a swing seat 214, a proximity switch 215, a quick release pin handle 216, and a spring 217.

[0050] A bearing is arranged in the tensioning head rotating bearing seat 208, and a tensioning head fixing seat 213 is connected in the bearing. The plum blossom tensioning head 210 is fixed in the tensioning head fixing seat 213 through a set of quick-release pin handles 216. The axial position of the plum blossom tensioning head 210 in the tensioning head fixing seat 213 is limited by the quick-release pin handles 216 to realize the quick release of the tensioning head; the front end of the plum blossom tensioning head 210 is provided with an internal thread for docking with the pipe mold tensioning screw 12, and the rear end of the plum blossom tensioning head 210 is a plum blossom profiling tensioning head for moving with the plum blossom tensioning head sleeve 317 The tensioning head fixing seat 213 is connected to the second motor reducer 207 through a sprocket, and the motor drives the sprocket to drive the tensioning head fixing seat 213 to drive the plum blossom tensioning head 210 to rotate. The plum blossom tensioning head 210 is tightened or loosened by rotation when docking with the pipe mold tensioning screw 12; a pair of side connecting plates 211 are distributed on the left and right sides of the tensioning head rotating bearing seat 208, and the side connecting plates 211 are provided with a pair of front and rear sliding copper sleeves 206 on the upper and lower sides. The front and rear sliding copper sleeves 206 are used to be sleeved on the front guide shaft 311, and the front guide shaft 311 is fixedly arranged on the tensioning head 210 and the pipe mold tensioning screw 12. The main body of the central tensioning oil cylinder 313 is fixedly connected to the frame, and four front guide shafts 311 are arranged in parallel, and the direction is consistent with the X direction, so that the side connecting plate 211 can slide forward and backward along the front guide shaft 311; the compression spring 312 is sleeved on the front guide shaft 311, and one end of the compression spring 312 is fixed, and the other end abuts against and connects the front and rear sliding copper sleeve 206, thereby limiting the front and rear movement range of the twisting tensioning head mechanism 200; the vertical guide shaft 204 is fixedly arranged on the side connecting plate 211, and the up and down sliding copper sleeve 209 is sleeved on the vertical guide shaft 204 in the vertical The guide shaft 204 moves up and down, the floating mounting seat 203 is fixedly connected to the up and down sliding copper sleeve 209, and the rotating copper sleeve 212 is set on the floating mounting seat 203, so that the rotating copper sleeve 212 can move up and down with the floating mounting seat 203, and the rotating copper sleeve 212 uses the Y axis as the rotation axis; a pair of swing seats 214 are distributed on the left and right sides of the tensioning head rotating bearing seat 208, and are bolted and fixedly connected to the tensioning head rotating bearing seat 208. The swing seat 214 is connected to the rotating copper sleeve 212, so that the tensioning head rotating bearing seat 208 can pitch and swing with the Y axis as the rotation axis. The first action cylinder 201 and the second action cylinder 205 are used to drive the plum blossom tensioning head 210 to move up and down and pitch and swing respectively. The proximity switch 215 is used to detect whether the screw-in depth of the front end of the plum blossom tensioning head 210 and the pipe mold tensioning screw 12 is in place.

[0051] Based on the above-mentioned twisting tensioning head mechanism 200, the pitch and roll swing of the plum blossom tensioning head 210 with the Y-axis as the rotation axis is realized through the cooperation of the swing seat 214 and the rotating copper sleeve 212, the up and down movement of the plum blossom tensioning head 210 on the Z-axis is realized through the cooperation of the up and down sliding copper sleeve 209 and the vertical guide shaft 204, and the forward and backward movement of the plum blossom tensioning head 210 on the X-axis is realized through the cooperation of the front and rear sliding copper sleeve 206 and the front guide shaft 311, and finally the forward and backward, up and down movement and pitch and roll swing of the plum blossom tensioning head 210 are realized, which facilitates the docking of the front end of the plum blossom tensioning head 210 with the pipe mold tensioning screw 12; thereby solving the problem of high meshing and docking failure rate caused by the different axes of the pipe mold tensioning screw 12 and the tensioning head.

[0052] In a further embodiment, the spring baffle 202 is fixedly set on the floating mounting seat 203, and springs 217 are set on the upper and lower parts of the swing seat 214 to abut against the spring baffle 202, thereby limiting the swing amplitude and angular position of the swing seat 214 in the rotating copper sleeve 212 to avoid excessive swing amplitude.

[0053] In a further embodiment, the plum blossom tensioning head 210 is movably connected to the plum blossom tensioning head sleeve 317, and the plum blossom tensioning head sleeve 317 is provided with a hollow space with the same shape as the plum blossom tensioning head 210, and the space is larger than the plum blossom tensioning head 210, so that the tensioning head twisting mechanism 200 is allowed to move within a certain range of movement. After the tensioning head twisting mechanism 200 is connected to the pipe mold tensioning screw 12, the plum blossom tensioning head sleeve 317 is tightened with the plum blossom tensioning head 210 by rotating the hand wheel 302, and then the through-type tensioning cylinder 313 is locked with the center screw 303. The through-type tensioning cylinder 313 gradually provides tensioning force to tighten the plum blossom tensioning head 210 and the plum blossom tensioning head sleeve 317 to transfer the tensioning force to the pipe mold tensioning screw 12 for tensioning.

[0054] In a specific embodiment, see Fig.10 The tail nut tightening mechanism 400 includes a fourth motor reducer 401, a sliding copper sleeve 402, a nut rotating bearing seat 403, a sprocket 404, and a nut 405.

[0055] A bearing is arranged in the nut rotating bearing seat 403, and a sprocket 404 and a nut 405 are arranged on the inner ring of the bearing. The nut 405 is fixedly connected to the sprocket 404. The sprocket 404 is connected to the fourth motor reducer 401 through a chain. The sprocket 404 is driven by the motor to drive the nut 405 to rotate. Sliding copper sleeves 402 are arranged on the left and right sides of the nut rotating bearing seat 403. The sliding copper sleeves 402 are sleeved on the tail guide shaft 301 so that the tail nut tightening mechanism 400 can move forward and backward along the tail guide shaft 301. The nut 405 is sleeved on the center screw 303, and the center screw 303 and the through-type tensioning cylinder 313 are tightened or loosened by rotation control.

[0056] In a specific embodiment, see Fig.11 The tensioning pull head driving mechanism 500 includes a front and rear action cylinder 501, a copper sleeve 502 and a connecting piece 503. The action end of the front and rear action cylinder 501 is connected to the connecting piece 503, the connecting piece 503 and the copper sleeve 502 are integrated, the copper sleeve 502 is sleeved on the guide piece in the X direction fixed to the through-type tensioning oil cylinder 313 body, and the connecting piece 503 is connected to the tensioning pull head mechanism 200. The front and rear action cylinder 501 drives and controls the tensioning pull head mechanism 200 to move forward and backward in the X direction.

[0057] In a specific embodiment, see Fig.12 The tube mold in-place detection device 600 is arranged at the front end of the entire device, and the tube mold in-place detection device 600 includes a spring push plate 601, a spring 602, a linear bearing seat 603, a guide shaft 604, and an induction sheet metal 605. The spring push plate 601, the guide shaft 604, and the induction sheet metal 605 are fixed as a whole by bolt connection, and slide in the linear bearing seat 603. The spring 602 is sleeved on the guide shaft 604, so that the spring push plate 601 slides when pressed against the tube mold end plate 13 and is kept in contact with the tube mold end plate 13 by the rebound force of the spring 602. The induction sheet metal 605 is used to detect whether the tensioning device and the tube mold are in place.

[0058] In the field of industrial automation, various types of action actuators are used to execute related actions, various types of sensors are used to collect data as the basis for determining the execution of related actions, and automated operations are established by connecting control terminals. According to specific application scenarios and action requirements, related control programs are programmed, tested, run, and debugged. This is very easy for technical personnel in this field to think of without the need for creative work. In addition, the automatic pipe mold tensioning device provided in the present application does not limit the combination of manual control and program automatic control by technical personnel. Technical personnel can adjust the relevant control programs according to convenience needs or directly adopt manual control. It can be understood that the automatic pipe mold tensioning device provided in the present application does not involve the protection of the control program.

[0059] The above is only a preferred embodiment of the present application, and is not any formal or substantial limitation to the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present application, and these improvements and supplements should also be regarded as the protection scope of the present application. For example, the cylinder involved in the embodiment of the present application can be replaced by an electric push rod, a ball screw, a T-type screw, a spring, etc., and the guide shaft, guide member and copper sleeve involved in the embodiment of the present application can be replaced by a linear guide slider, a linear bearing, etc., and the motor can be replaced by a stepper motor, a variable frequency motor, etc. Various motors. Any technician familiar with this profession, without departing from the content and scope of the present application, can make some changes, modifications and evolutions of the technical content disclosed above, which are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolutions made to the above-mentioned embodiments based on the substantial technology of the present application are still within the scope of the technical solution of the present application.

Claims

1. An automatic tube mold tensioning device, with the axial direction of the device as the X direction, the vertical direction as the Z direction, and a Y direction perpendicular to the X direction and the Z direction, the X direction close to the tube mold as the front end, and the tube mold away from the tube mold as the rear end, the tube mold includes a tube mold end plate, a tube mold tensioning screw and a tube mold nut sleeved on the tube mold tensioning screw, characterized in that: The automatic pipe mold tensioning device comprises a pipe mold nut tightening mechanism for locking the pipe mold nut, a tensioning head mechanism for connecting the pipe mold tensioning screw, a cylinder tensioning mechanism connected to the tensioning head mechanism to provide tensioning force, a tail nut tightening mechanism for tightening the tensioning head mechanism and the cylinder tensioning mechanism, a tensioning head driving mechanism for driving the tensioning head mechanism to move forward and backward along the X direction, and a pipe mold in-place detection mechanism for detecting the pipe mold in-place status; the pipe mold nut tightening mechanism, tensioning head mechanism, cylinder tensioning mechanism and tail nut tightening mechanism are coaxially arranged; the pipe mold nut tightening mechanism, tensioning head mechanism and tail nut tightening mechanism move forward and backward relative to the axial direction of the cylinder tensioning mechanism; The tensioning head mechanism is provided with a tensioning head for docking with the tube mold tensioning screw. The tensioning head is provided with the freedom of forward and backward movement along the X direction, the freedom of up and down movement along the Z direction and the freedom of pitching and swinging with the Y direction as the rotation axis, so that the front end of the tensioning head is coaxially docked with the tube mold tensioning screw.

2. The automatic tube mold tensioning device according to claim 1, characterized in that: The oil cylinder tensioning mechanism is provided with at least three lifting rings, which are connected to the lifting and moving equipment to move to the vicinity of the end of the pipe mold.

3. The automatic tube mold tensioning device according to claim 1, characterized in that: The cylinder tensioning mechanism includes a through-type tensioning cylinder, a center screw is passed through the center of the through-type tensioning cylinder, a tensioning head sleeve for movably connecting the tensioning head is provided at the front end of the center screw, the rear end of the tensioning head is set as a plum blossom-shaped structure, the tensioning head sleeve is set as a plum blossom-shaped tensioning head sleeve, and the rear end of the center screw is provided with a handwheel for rotating the center screw to lock the tensioning head and the tensioning head sleeve.

4. The automatic tube mold tensioning device according to claim 3, characterized in that: The tensioning head twisting mechanism also includes a tensioning head rotating bearing seat, a tensioning head fixed seat is provided inside the tensioning head rotating bearing seat through a bearing connection, and the tensioning head is connected to the tensioning head fixed seat through a set of quick-release pin handles; the tensioning head fixed seat is connected to the second motor reducer through a sprocket; a pair of side connecting plates are provided on the left and right sides of the tensioning head rotating bearing seat, and a pair of front and rear sliding copper sleeves are provided on the upper and lower sides of the side connecting plates, and the front and rear sliding copper sleeves are provided on the front guide shaft fixed to the through-type tensioning cylinder body, and a vertical guide shaft is fixed on the side connecting plate, and the vertical An up and down sliding copper sleeve is sleeved on the guide shaft, and the up and down sliding copper sleeve is fixedly connected with a floating mounting seat, and a rotating copper sleeve is provided on the floating mounting seat, and the rotating copper sleeve takes the Y-axis as the rotation axis, and the rotating copper sleeve is connected with a swing seat, and the swing seat is fixedly connected to the rotating bearing seat of the tensioning head; the pitching swing of the tensioning head with the Y-axis as the rotation axis is realized by the cooperation between the swing seat and the rotating copper sleeve, the up and down movement of the tensioning head on the Z-axis is realized by the cooperation between the up and down sliding copper sleeve and the vertical guide shaft, and the forward and backward movement of the tensioning head on the X-axis is realized by the cooperation between the front and rear sliding copper sleeve and the front guide shaft.

5. The automatic tube mold tensioning device according to claim 4, characterized in that: The tensioning head twisting mechanism also includes a first actuating cylinder for driving the tensioning head to move up and down and a second actuating cylinder for driving the tensioning head to pitch and swing.

6. The automatic tube mold tensioning device according to claim 4, characterized in that: The tensioning pull head driving mechanism comprises a front and rear actuating cylinder, and the actuating ends of the front and rear actuating cylinders are connected to the tensioning pull head mechanism through a connecting piece to drive the tensioning pull head mechanism to move forward and backward.

7. The automatic tube mold tensioning device according to claim 3, characterized in that: The tail nut tightening mechanism includes a nut sleeved on the center screw, and the nut is located at the rear end direction of the through-type tensioning cylinder; the tail nut tightening mechanism also includes a nut rotating bearing seat, and the nut rotating bearing seat is connected to the nut through a bearing, and the nut is connected to the fourth motor reducer through a sprocket; the center screw and the through-type tensioning cylinder are controlled to be tightened or loosened by rotating the nut.

8. The automatic tube mold tensioning device according to claim 3, characterized in that: The cylinder tensioning mechanism also includes a proximity switch, a laser ranging sensor and a reflected light curtain. The proximity switch, the laser ranging sensor and the reflected light curtain extend to the front end of the device through a frame fixed on the through-type tensioning cylinder body. The laser ranging sensor is used to detect the distance between the device and the pipe mold end plate, and the reflected light curtain is vertically arranged to detect the actual height position of the pipe mold tensioning screw.

9. The automatic tube mold tensioning device according to claim 1, characterized in that: The tube mold nut tightening mechanism includes a first motor reducer, a nut sleeve rotating bearing seat, a nut tightening sleeve and a sprocket. The nut sleeve rotating bearing seat is connected to the nut tightening sleeve via a bearing, and the nut tightening sleeve is connected to the first motor reducer via the sprocket; the nut tightening sleeve is hollow and docked with the tube mold nut.

10. The automatic tube mold tensioning device according to claim 1, characterized in that: The tube mold in-place detection mechanism is arranged at the front end of the tensioning device, and the tube mold in-place detection device includes a spring push plate, a spring, a linear bearing seat, a guide shaft and an induction sheet metal; the spring push plate, the guide shaft and the induction sheet metal are connected and fixed as a whole, and slide in the linear bearing seat, and the spring is sleeved on the guide shaft, so that the spring push plate slides when it is pressed against the tube mold end plate and is kept in contact with the tube mold end plate by the spring rebound force, and the induction sheet metal is used to detect whether the tensioning device and the tube mold are in place.

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