Spindle box of internal curing winding machine with three-dimensional layout of mold shaft

Abstract

The utility model discloses an internal curing winding machine spindle box with three-dimensional layout of mold shafts, which comprises a spindle box body, a motor speed reducer mounted on the back of the spindle box body, a transmission mechanism arranged in the spindle box body and driven by the motor speed reducer, and a plurality of mold shafts connected with the transmission mechanism and positioned in front of the spindle box body, the plurality of die shafts comprise large-specification die shafts and small-specification die shafts, and the large-specification die shafts and the small-specification die shafts are arranged up and down; and demolding ejection oil cylinders are arranged on the main shaft box body and are distributed on the peripheries of all the mold shafts. According to the design, a three-dimensional layout form is adopted for the die shafts, the configured large-specification die shafts and the configured small-specification die shafts achieve the maximum yarn outlet speed of 75 m / sec through the same motor reducer and the matched transmission gears, and the purpose of winding the large-specification die shafts with large torque is achieved; therefore, the same spindle box can be suitable for winding pipelines with nominal diameters of 1000 mm and below.

Description

Technical Field

[0001] The utility model relates to the field of glass fiber reinforced plastic pipes, in particular to processing equipment for glass fiber reinforced plastic pipes. Background Art

[0002] FRP pipes are primarily made of glass fiber as a reinforcement and resin as a matrix. In recent years, they have been widely used on ships. Production methods for FRP pipes and their accessories include hand lay-up, winding, pressing, pultrusion, and centrifugal casting, with winding being the most widely used industrially.

[0003] The winding method involves winding a continuous glass fiber yarn impregnated with a resin adhesive onto a mold under controlled tension and predetermined linearity. The mold is fixedly connected to a mold shaft at both ends, with one shaft driven by a matching motor and reducer. A winding carriage is located next to the mold. The winding carriage moves back and forth along the mold's axis, wrapping the glass fiber yarn around the mold and curing it into a fiberglass reinforced plastic tube. The winding machine primarily consists of the spindle box, which houses the mold shaft, and the winding carriage.

[0004] The existing mold shafts for winding glass fiber reinforced plastic pipes all adopt a horizontal layout, such as Figure 1 To accommodate molds of varying diameters, the horizontally arranged mold shafts must be of different sizes to accommodate the corresponding mold sizes. This results in a larger spindle box, where the mold shafts reside, and the spindle box takes up a larger area. Utility Model Content

[0005] The technical problem solved by the present invention is as follows: in order to adapt to molds of different diameters for glass fiber reinforced plastic processing, several mold shafts arranged horizontally need to have mold shafts of different specifications to adapt to molds of corresponding sizes. This results in the main spindle box where the mold shaft is located being too large, and thus the main spindle box occupies a larger space.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an internal curing winding machine spindle box with a three-dimensional layout of mold axes, including a spindle box body, a motor reducer installed on the back of the spindle box body, a transmission mechanism arranged in the spindle box body and driven by the motor reducer, and a mold axis connected to the transmission mechanism and located in front of the spindle box body. There are several mold axes, and the several mold axes include large-scale mold axes and small-scale mold axes, which are arranged up and down; a demolding ejection cylinder is provided on the spindle box body, and the demolding ejection cylinder is distributed on the periphery of all mold axes.

[0007] Large mold shafts connect to larger molds, while small mold shafts connect to smaller molds. This allows a single winding machine headstock to accommodate molds of varying sizes. Furthermore, because the large and small mold shafts are arranged three-dimensionally rather than horizontally, the headstock of this invention is smaller and occupies less space than conventional headstocks with horizontal mold shafts.

[0008] Alternatively, two small mold shafts are located on either side of a large mold shaft. Four ejector cylinders are positioned at the corners of a square, with the center of the square centered on the axis of the large mold shaft. Thus, each small mold shaft is flanked by a ejector cylinder. When ejecting a fiberglass reinforced plastic pipe from a mold connected to a large mold shaft, all four ejector cylinders operate simultaneously. When ejecting a fiberglass reinforced plastic pipe from a mold connected to a small mold shaft, a single ejector cylinder is sufficient.

[0009] The back of the spindle housing is equipped with a steam cooling water connection. Cooling ports are located in the center of the large and small mold shafts, and the steam cooling water connection is connected to these ports. Steam and cooling water enter the connecting pipe through the steam cooling water connection. From there, the steam and cooling water enter the mold connected to the mold shaft through the cooling port, cooling and solidifying the fiberglass reinforced plastic pipes attached to the mold. This curing method is called internal curing.

[0010] As an improvement, one large-size mold shaft and two small-size mold shafts constitute a group of mold shafts. Several groups of mold shafts are set on a single spindle box, and each group of mold shafts is equipped with a motor reducer.

[0011] The internal curing winding machine's spindle housing is located at one end of a conveyor line, with a fiberglass pipe support frame movably mounted on it. A winding carriage is mounted above the spindle housing, movably mounted on a mobile frame supported by a pair of brackets. The mold is supported at both ends by the fiberglass pipe support frame. One end of the mold is connected to the mold shaft of the spindle housing, which rotates the mold under the drive of a motor reducer. The winding carriage reciprocates along the mobile frame, parallel to the mold axis, wrapping the fiberglass yarn around the mold to form the fiberglass pipe. After the fiberglass pipe is formed and cured, a demolding cylinder acts on the end of the pipe to demold it. Once completed, the conveyor line moves the fiberglass pipe support frame and the pipe mounted on it out of the processing station.

[0012] For an internal curing wrapping machine with only one set of mold shafts, there are several headstocks, each arranged in parallel, each occupying a workstation. A mobile frame, which moves along a pair of brackets, enables switching between the various workstations. After the fiberglass reinforced plastic pipe at the first workstation is wound and begins to cure, the mobile frame moves along a pair of brackets to the second workstation, where the wrapping car wraps the mold at the second workstation. After the second workstation is completed, the wrapping car moves to the third workstation for winding. During the third workstation, the first workstation's demolding operation can be completed. This allows for highly efficient automated production.

[0013] The internal curing wrapping machine's spindle box is equipped with several sets of mold shafts, each occupying a workstation. A mobile frame, which moves along a pair of brackets, enables switching between these stations. After the fiberglass reinforced plastic pipe at the first station is wound and begins curing, the mobile frame moves along the pair of brackets to the second station, where the wrapping cart wraps the mold at the second station. After the second station is finished, the wrapping cart moves to the third station for winding. During this time, the first station's demolding operation can be completed. This allows the entire machine to achieve highly efficient automated production.

[0014] The utility model adopts a three-dimensional layout for the mold shaft. The large-sized mold shaft and the small-sized mold shaft are configured to achieve a maximum yarn output speed of 75m / sec through the same motor reducer and an adapted transmission gear, thereby achieving the purpose of large-torque winding of the large-sized mold shaft. Furthermore, the same spindle box can be used for winding pipes with a nominal diameter of 1000 mm and below, solving the disadvantages of adopting a horizontal layout of the mold shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 Schematic diagram of mold axis distribution of the spindle box in the prior art;

[0017] Figure 2 This is a schematic diagram of a main shaft box of an internal curing winding machine in the first embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the fiberglass pipe processing equipment where the spindle box of the internal curing winding machine is located in the first embodiment of the present utility model.

[0019] Explanation of symbols in the figure:

[0020] 01. The mold shaft of the spindle box in the prior art;

[0021] 10. Spindle box;

[0022] 20. Motor reducer;

[0023] 30. Large-size mold shaft; 31. Cooling port;

[0024] 40. Small size mold shaft;

[0025] 50. Demoulding and ejection cylinder;

[0026] 60. Steam cooling water joint;

[0027] 70. Spindle box of internal curing winding machine; 71. Conveyor line; 72. Fiberglass pipe support frame; 73. Winding vehicle; 74. Mobile frame; 75. Bracket;

[0028] 80. Fiberglass pipes. DETAILED DESCRIPTION

[0029] First embodiment

[0030] like Figure 2 The spindle box of the internal curing winding machine with a three-dimensional layout of the mold shaft includes a spindle box body 10, a motor reducer 20 installed on the back of the spindle box body, a transmission mechanism arranged in the spindle box body and driven by the motor reducer, and a mold shaft connected to the transmission mechanism and located in front of the spindle box body. There are several mold shafts, and the several mold shafts include a large-scale mold shaft 30 and a small-scale mold shaft 40, which are arranged up and down; a demolding ejection cylinder 50 is provided on the spindle box body, and the demolding ejection cylinders are distributed on the periphery of all mold shafts.

[0031] There is one large mold shaft 30 and two small mold shafts 40, which are located on the left and right sides below the large mold shaft. There are four demolding and ejection cylinders 50, located at the four corners of a square, with the center of the square located on the axis of the large mold shaft 30.

[0032] A steam cooling water connector 60 is provided on the back of the spindle housing 10 , and cooling ports 31 are provided in the centers of the large-size mold shaft 30 and the small-size mold shaft 40 , and the steam cooling water connector is communicated with the cooling ports.

[0033] The spindle box 70 of the internal curing winding machine is set at one end of the transmission line 71, and the transmission line is movably equipped with a glass fiber reinforced plastic pipe support frame 72; a winding car 73 is set above the spindle box of the internal curing winding machine, and the winding car is movably equipped on a movable frame 74, which is supported by a pair of brackets 75.

[0034] refer to Figure 3 In this embodiment, the number of the inner curing wrapping machine spindle boxes 70 is several, and the plurality of inner curing wrapping machine spindle boxes 70 are arranged in parallel, each inner curing wrapping machine spindle box 70 occupies one workstation. A movable frame 74 that can move along a pair of brackets 75 can switch between the workstations.

[0035] During production, both ends of the mold are supported by the FRP pipe support frame 72, and one end of the mold is connected to the large-size mold 30 or the small-size mold shaft 40 of the spindle box. The motor reducer 20 drives the gear transmission mechanism in the spindle box body 10, and the mold shaft coaxially arranged with the power output gear of the gear transmission mechanism drives the mold to rotate. The winding car 73 moves back and forth along the movable frame 74, and the moving direction is parallel to the axis of the mold. The winding car winds the glass fiber yarn onto the mold to form the FRP pipe. Afterwards, steam and cooling water enter the connecting pipe through the steam cooling water joint 60. The connecting pipe is located in the spindle box body 10 and is pivotally connected to the mold shaft. Through the connecting pipe, steam and cooling water enter the mold connected to the mold shaft through the cooling port 31 to cool and solidify the FRP pipe on the mold.

[0036] After the glass fiber reinforced plastic pipe is formed and solidified, the demoulding and ejecting oil cylinder 50 acts on the end of the glass fiber reinforced plastic pipe to demould the glass fiber reinforced plastic pipe. After completion, the conveyor line 71 moves the glass fiber reinforced plastic pipe support frame 72 and the glass fiber reinforced plastic pipe 80 thereon to the outside of the processing station.

[0037] After the fiberglass reinforced plastic pipe on the first station is wound, it begins to solidify. The movable frame 74 moves along a pair of brackets 75 to the second station. The winding vehicle 73 winds the mold on the second station. After the winding at the second station is completed, the winding vehicle moves to the third station for winding. During the winding at the third station, the demoulding operation of the first station can be completed. In this way, the entire equipment can achieve high-efficiency automated production.

[0038] The large-sized mold shaft 30 and the small-sized mold shaft 40 are configured to achieve a maximum yarn delivery speed of 75m / sec through the same motor reducer 20 and matching transmission gears, achieving high torque for winding the large-sized mold shaft 30. This allows the same headstock to be suitable for winding pipes with a nominal diameter of 1000mm or less.

[0039] Second embodiment

[0040] The spindle box of the internal curing winding machine with a three-dimensional layout of mold axes includes a spindle box body 10, a motor reducer 20 installed on the back of the spindle box body, a transmission mechanism arranged in the spindle box body and driven by the motor reducer, and a mold axis connected to the transmission mechanism and located in front of the spindle box body. There are several mold axes, and the several mold axes include a large-scale mold axis 30 and a small-scale mold axis 40, which are arranged up and down; a demolding ejection cylinder 50 is provided on the spindle box body, and the demolding ejection cylinders are distributed on the periphery of all mold axes.

[0041] Two small mold shafts 40 are distributed on the left and right sides below a large mold shaft 30. A large mold shaft 30 and two small mold shafts 40 form a set of mold shafts. A single spindle housing 10 is provided with several sets of mold shafts, and each set of mold shafts is equipped with a motor reducer 20.

[0042] Each set of mold shafts is equipped with four demoulding and ejecting oil cylinders 50 , which are located at the four corners of a square, and the center of the square is located on the axis of the large-size mold shaft 30 .

[0043] A steam cooling water connector 60 is provided on the back of the spindle housing 10 , and cooling ports 31 are provided in the centers of the large-size mold shaft 30 and the small-size mold shaft 40 , and the steam cooling water connector is communicated with the cooling ports.

[0044] The spindle box 70 of the internal curing winding machine is set at one end of the transmission line 71, and the transmission line is movably equipped with a glass fiber reinforced plastic pipe support frame 72; a winding car 73 is set above the spindle box of the internal curing winding machine, and the winding car is movably equipped on a movable frame 74, which is supported by a pair of brackets 75.

[0045] In this embodiment, each set of mold axes occupies one workstation, and a movable frame 74 that can be displaced along a pair of brackets 75 can be switched between the workstations.

[0046] During production, both ends of the mold are supported by a fiberglass pipe support frame 72, and one end of the mold is connected to the large-size mold 30 or the small-size mold shaft 40 of each set of mold shafts. The motor reducer 20 drives the gear transmission mechanism in the main spindle housing 10, and the mold shaft coaxially arranged with the power output gear of the gear transmission mechanism drives the mold to rotate. The winding car 73 moves back and forth along the movable frame 74, and the moving direction is parallel to the axis of the mold. The winding car winds the glass fiber yarn onto the mold to form the fiberglass pipe. Afterwards, steam and cooling water enter the connecting pipe through the steam cooling water joint 60. The connecting pipe is located in the main spindle housing 10 and is pivotally connected to the mold shaft. Through the connecting pipe, steam and cooling water enter the mold connected to the mold shaft through the cooling port 31 to cool and solidify the fiberglass pipe on the mold.

[0047] After the glass fiber reinforced plastic pipe is formed and solidified, the demoulding and ejecting oil cylinder 50 acts on the end of the glass fiber reinforced plastic pipe to demould the glass fiber reinforced plastic pipe. After completion, the conveyor line 71 moves the glass fiber reinforced plastic pipe support frame 72 and the glass fiber reinforced plastic pipe 80 thereon to the outside of the processing station.

[0048] After the fiberglass reinforced plastic pipe on the first station is wound, it begins to solidify. The movable frame 74 moves along a pair of brackets 75 to the second station. The winding vehicle 73 winds the mold on the second station. After the winding at the second station is completed, the winding vehicle moves to the third station for winding. During the winding at the third station, the demoulding operation of the first station can be completed. In this way, the entire equipment can achieve high-efficiency automated production.

[0049] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation method and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A spindle box for an internal curing winding machine with a three-dimensional arrangement of mold shafts, comprising a spindle box body (10), a motor reducer (20) mounted on the back of the spindle box body, a transmission mechanism disposed in the spindle box body and driven by the motor reducer, and a mold shaft connected to the transmission mechanism and located in front of the spindle box body, wherein the number of mold shafts is several, and the invention is characterized in that: The plurality of mold shafts include a large-size mold shaft (30) and a small-size mold shaft (40), which are arranged up and down; a demoulding ejection oil cylinder (50) is provided on the spindle housing, and the demoulding ejection oil cylinder is distributed on the periphery of all the mold shafts.

2. The spindle box of the internal curing winding machine with a three-dimensional mold shaft layout according to claim 1, characterized in that: Two small-sized mold shafts (40) are distributed on the left and right sides below a large-sized mold shaft (30).

3. The spindle box of the internal curing winding machine with a three-dimensional mold shaft layout according to claim 2, characterized in that: The number of the demoulding ejection oil cylinders (50) is four, and the four demoulding ejection oil cylinders are located at the four corners of a square, and the center of the square is located on the axis of the large-size mold shaft (30).

4. The spindle box of the internal curing winding machine with a three-dimensional mold shaft layout according to claim 1, characterized in that: A steam cooling water connector (60) is provided on the back of the main spindle housing (10), and a cooling port (31) is provided at the center of the large-size mold shaft (30) and the small-size mold shaft (40), and the steam cooling water connector is communicated with the cooling port.

5. The spindle box of the internal curing winding machine with a three-dimensional mold shaft layout according to claim 2, characterized in that: A large-size mold shaft (30) and two small-size mold shafts (40) form a set of mold shafts. A plurality of sets of mold shafts are arranged on a single spindle housing (10), and each set of mold shafts is equipped with a motor reducer (20).

6. The spindle box of the internal curing winding machine with a three-dimensional mold shaft layout according to claim 5, characterized in that: The spindle box (70) of the internal curing winding machine is arranged at one end of the transmission line (71), and the transmission line is movably matched with a glass fiber reinforced plastic pipe support frame (72); a winding car (73) is arranged above the spindle box of the internal curing winding machine, and the winding car is movably matched with the moving frame (74), and the moving frame is supported by a pair of brackets (75).

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