Bath tank for keeping constant temperature of resin

Abstract

The utility model discloses a bath for keeping constant temperature of resin, which belongs to the field of production of composite gas cylinders and comprises a support and a bath body erected at the top of the support, and a descending tank for immersing fibers and greasing the fibers is arranged at the top of the bath body. A temperature control mechanism for performing constant-temperature regulation and control on the bath body is mounted on the bracket; and a thermocouple in circuit connection with the temperature control mechanism is mounted in the descending tank. A thermocouple capable of penetrating into the resin is additionally arranged on the bath tank and the descending tank to monitor the temperature and is connected with a mold temperature controller with a PID (Proportion Integration Differentiation) temperature control system; and the mold temperature controller is connected with a constant-temperature water path. The thermocouple feeds back the real-time resin temperature to the mold temperature controller, the mold temperature controller adjusts the output water heating power through internal calculation according to the difference between the real-time resin temperature, the water temperature in a water outlet pipe of the mold temperature controller and the set temperature and the difference between the water temperature in a water return pipe of the mold temperature controller and the set temperature, and the water outlet temperature and the water return temperature of the mold temperature controller are guaranteed, so that the resin temperature is guaranteed. Therefore, the temperature of the resin adhesive can be ensured to be constant in any working environment.

Description

Technical Field

[0001] The utility model relates to the field of composite gas cylinder production, and specifically relates to a bath for keeping resin at a constant temperature. Background Art

[0002] The fiber-wound inner liner composite gas cylinder is a new type of gas cylinder developed in recent years. It uses fiber as the main load-bearing layer. Compared with steel gas cylinders, it has the advantages of light weight, long service time, corrosion resistance, excellent safety performance, and long service life. There are many ways of fiber winding. Among them, wet winding of gas cylinders is more common in the production of composite gas cylinders. In the actual production process, first, carbon fiber or glass fiber needs to be impregnated with glue through a glue tank and then wound onto the gas cylinder.

[0003] The Chinese utility model patent with the publication number of CN203977116U3 discloses a fiber sizing device for producing composite gas cylinders. By setting a glue inlet slit and a glue outlet at the bottom of the discharging pressure roller and arranging a cavity communicating with the glue slit and the glue outlet in the discharging pressure roller, the glass glue accumulated on the upper surface of the fiber can be discharged, effectively improving the uniformity of fiber sizing, so that the strength of the winding layer of the gas cylinder after winding is more uniform, achieving the purpose of improving the quality of the gas cylinder. However, in the actual production process of composite gas cylinders, fiber needs to be wet-impregnated with resin, and the viscosity of resin is different at different temperatures, and the amount of fiber impregnated with resin is also different.

[0004] When the temperature is too low, the viscosity of the resin increases, making it difficult for the fiber to be wetted, resulting in uneven distribution of the resin, affecting the performance of the composite material. The fluidity of the resin becomes poor, increasing the operation difficulty and affecting the stability and consistency of the process. The curing reaction rate of the resin decreases, and the curing time is also prolonged, affecting the production efficiency.

[0005] When the temperature is too high, the curing speed is accelerated, shortening the operation time, and the curing is uneven and not easy to operate. The viscosity of the resin decreases at high temperatures, affecting the wetting effect of the fiber, resulting in a decrease in the mechanical properties of the composite material, and accelerating the formation of bubbles. Especially during the curing process, the presence of bubbles will affect the density and strength of the composite material.

[0006] Due to the different ambient temperatures caused by seasonal changes, the temperature of the resin is also different. The glue tank set in the above equipment only has the simple function of containing resin and cannot provide a good constant temperature environment for the resin glue inside, which will have a significant impact on the fiber sizing work.

[0007] Therefore, a bath for keeping resin at a constant temperature is provided to solve the above problems. Content of the Utility Model

[0008] (1) Technical Problems to be Solved

[0009] The present utility model provides a bath for maintaining the constant temperature of resin, aiming to solve the problem in the background technology that the existing glue tank only has the function of simply containing resin and cannot provide a good constant temperature environment for the resin glue therein, preventing the difficulty of fiber infiltration caused by too high or too low temperature, resulting in uneven resin distribution and affecting the infiltration effect of fibers.

[0010] (II) Technical solution

[0011] To achieve the above object, the present utility model provides the following technical solution: A bath for maintaining the constant temperature of resin, including a bracket and a bath body erected on the top of the bracket. A descending groove for submerging fibers to apply resin to the fibers is opened at the top of the bath body. A temperature control mechanism for thermostatically regulating the bath body is installed on the bracket. A thermocouple circuit-connected to the temperature control mechanism is installed in the descending groove.

[0012] To keep the temperature of the resin glue in the descending groove of the bath body constant, the temperature control mechanism includes a mold temperature controller arranged outside the bracket and a water outlet pipe and a water return pipe installed on the mold temperature controller. The temperature control mechanism includes a mold temperature controller arranged outside the bracket and a constant temperature water path arranged in an S shape in the top cavity inside the bracket. The mold temperature controller is provided with a water outlet pipe and a water return pipe. Two connecting pipe heads are installed on the outer side wall of the bracket at the side of the cavity. The two connecting pipe heads are respectively inserted and fixed with the water outlet pipe and the water return pipe. The constant temperature water path is located directly below the bath body. The thermocouple feeds back the real-time resin temperature to the mold temperature controller. The mold temperature controller adjusts the output water heating power through internal calculation according to the difference between the real-time resin temperature, the water temperature in the water outlet pipe of the mold temperature controller, the water temperature in the water return pipe of the mold temperature controller and the set temperature, ensuring the water outlet and return water temperatures of the mold temperature controller and thus ensuring the resin temperature, so as to ensure that the resin glue temperature is constant under any working environment, thereby ensuring the processing efficiency.

[0013] Preferably, for installing the constant temperature water path, the water outlet pipe and the water return pipe, the connecting pipe heads are divided into a water inlet pipe head and a water outlet pipe head. The water outlet pipe is inserted and fixed with the water inlet pipe head, and the water return pipe is inserted and fixed with the water outlet pipe head. The two ends of the constant temperature water path are respectively inserted and fixed with the water inlet pipe head and the water outlet pipe head. The water outlet pipe and the water return pipe are connected and docked with the constant temperature water path by means of insertion, which is convenient for disassembly and assembly during maintenance.

[0014] Preferably, in order to ensure the heat supply balance in the cavity of the bracket, several support bars are arranged below the constant temperature waterway at the bottom inside the cavity of the bracket. Support blocks are fixedly installed at the bottoms of the several support bars. Semi-circular support grooves adapted to the outer side wall of the constant temperature waterway are formed at the tops of the several support bars. The constant temperature waterway is supported by the support bars, pressed into the semi-circular support grooves, and clamped and fixed. The support blocks are used to support the support bars to ensure that the bottom of the constant temperature waterway does not contact the bottom inside the cavity, avoid uneven heating, and ensure the stability of heat conduction.

[0015] Preferably, in order to adjust the installation height of the thermocouple, the bath further includes a support mechanism arranged on the thermocouple. The support mechanism includes a vertical support rod fixedly installed at a position near the side of the top of the bracket. The top end of the vertical support rod is hinged with a horizontal support rod. A sleeve block is fixedly installed at one end of the horizontal support rod far from the vertical support rod. A connecting block is movably installed inside the sleeve block. An installation block for installing the thermocouple is fixedly installed on the outer wall of the connecting block. The sleeve block and the connecting block are rotationally connected by a fastening bolt. By rotating the horizontal support rod, the angle of the horizontal support rod is adjusted, so as to change the position height of the installation block. Then, by rotating the installation block and loosening and tightening the fastening bolt, the levelness of the installation block is adjusted to adapt to the thermocouple, so that the thermocouple can be vertically inserted into the resin glue to detect the temperature, which is convenient and fast.

[0016] Preferably, for installing the thermocouple, an installation cavity is formed at the top of the installation block. The thermocouple probe is inserted downward into the installation cavity. There is no fixation between the thermocouple and the installation cavity, and it is a movable installation. The support can be completed by inserting the thermocouple into the installation cavity from the top, which is convenient and fast.

[0017] (III) Beneficial effects

[0018] In this bath, a thermocouple that can penetrate into the resin is installed on the descending tank to monitor the temperature and is connected to a mold temperature controller with a PID temperature control system. The mold temperature controller is connected to the constant temperature waterway. The thermocouple feeds back the real-time resin temperature to the mold temperature controller. The mold temperature controller adjusts the output water heating power through internal calculation according to the differences between the real-time resin temperature, the water temperature in the outlet pipe of the mold temperature controller, and the water temperature in the return pipe of the mold temperature controller and the set temperature, to ensure the outlet and return water temperatures of the mold temperature controller, thereby ensuring the resin temperature. Thus, it is ensured that the resin glue temperature is constant under any working environment, thereby ensuring the processing efficiency.

[0019] In this bath, by rotating the horizontal support rod, the angle of the horizontal support rod is adjusted, so as to change the position height of the installation block. Then, by rotating the installation block and loosening and tightening the fastening bolt, the levelness of the installation block is adjusted to adapt to the thermocouple, so that the thermocouple can be vertically inserted into the resin glue to detect the temperature, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1Schematic diagram of the external structure of a bath for keeping resin at a constant temperature;

[0021] Figure 2 Schematic diagram of the sectional structure of the side view of a bath for keeping resin at a constant temperature;

[0022] Figure 3 Schematic diagram of the sectional structure of the top view of a bath for keeping resin at a constant temperature;

[0023] Figure 4 is Figure 1 Enlarged schematic diagram at position A in

[0024] Figure 5 Installation schematic diagram of the constant temperature water circuit and the semi-circular support groove of a bath for keeping resin at a constant temperature.

[0025] In the figure:

[0026] 1. Bracket; 2. Bath body; 3. Descending tank; 4. Temperature control mechanism; 41. Mold temperature controller; 42. Outlet pipe; 43. Return pipe; 44. Constant temperature water circuit; 45. Connector head; 451. Inlet pipe head; 452. Outlet pipe head; 46. Support bar; 47. Support block; 48. Semi-circular support groove; 5. Thermocouple; 6. Support mechanism; 61. Vertical support rod; 62. Horizontal support rod; 63. Sleeve block; 64. Connecting block; 65. Mounting block; 66. Fastening bolt; 67. Mounting cavity. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] This embodiment provides a bath for keeping resin at a constant temperature. As Figures 1-5 shown, the bath includes a bracket 1 and a bath body 2 erected on the top of the bracket 1. A descending tank 3 for submerging fibers for fiber greasing is opened at the top of the bath body 2. A temperature control mechanism 4 for controlling the constant temperature of the bath body 2 is installed on the bracket 1. A thermocouple 5 electrically connected to the temperature control mechanism 4 is installed in the descending tank 3:

[0030] The temperature control mechanism 4 includes a mold temperature controller 41 arranged outside the bracket 1 and a constant temperature water path 44 arranged in an S shape in the top cavity inside the bracket 1. The mold temperature controller 41 is provided with a water outlet pipe 42 and a water return pipe 43. Two connecting pipe heads 45 are installed on the outer side wall of the bracket 1 at the side of the cavity. The two connecting pipe heads 45 are respectively inserted and fixed with the water outlet pipe 42 and the water return pipe 43. The constant temperature water path 44 is located directly below the bathtub body 2.

[0031] During use, a thermocouple 5 that can penetrate into the resin is installed on the lowering tank 3 to monitor the temperature and is connected to the mold temperature controller 41 with a PID temperature control system. The mold temperature controller 41 is connected to the constant temperature water path 44. The thermocouple 5 feeds back the real-time resin temperature to the mold temperature controller 41. The mold temperature controller 41 adjusts the output water heating power through internal calculation according to the differences between the real-time resin temperature, the water temperature in the water outlet pipe 42 of the mold temperature controller 41, and the water temperature in the water return pipe 43 of the mold temperature controller 41 and the set temperature, ensuring the water outlet and return water temperatures of the mold temperature controller 41 and thus ensuring the resin temperature, so as to ensure that the resin glue temperature is constant regardless of the working environment, thereby ensuring the processing efficiency.

[0032] Furthermore, the connecting pipe head 45 is divided into a water inlet pipe head 451 and a water outlet pipe head 452. The water outlet pipe 42 is inserted and fixed with the water inlet pipe head 451, and the water return pipe 43 is inserted and fixed with the water outlet pipe head 452. The two ends of the constant temperature water path 44 are respectively inserted and fixed with the water inlet pipe head 451 and the water outlet pipe head 452. During use, the water outlet pipe 42 and the water return pipe 43 are connected and docked with the constant temperature water path 44 by inserting the water inlet pipe head 451 and the water outlet pipe head 452, which is convenient for disassembly and assembly during maintenance.

[0033] Even further, several support bars 46 are arranged at the bottom inside the cavity of the bracket 1 below the constant temperature water path 44. Support blocks 47 are fixedly installed at the bottoms of the several support bars 46. Semi-circular support grooves 48 adapted to the outer side wall of the constant temperature water path 44 are formed at the tops of the several support bars 46. During use, the constant temperature water path 44 is supported by the support bars 46, and the constant temperature water path 44 is pressed into the semi-circular support grooves 48 and clamped and fixed. The support blocks 47 are used to support the support bars 46 to ensure that the bottom of the constant temperature water path 44 does not contact the bottom inside the cavity, avoiding uneven heating and ensuring the stability of heat conduction.

[0034] Embodiment 2

[0035] Different from Embodiment 1, as Figure 1 and Figure 4As shown, the bathtub further includes a support mechanism 6 provided on the thermocouple 5. The support mechanism 6 includes a vertical support rod 61 fixedly installed at a position near the side of the top of the bracket 1. The top end of the vertical support rod 61 is hinged with a horizontal support rod 62. A sleeve block 63 is fixedly installed at one end of the horizontal support rod 62 away from the vertical support rod 61. A connecting block 64 is movably installed in the sleeve block 63. An installation block 65 for installing the thermocouple 5 is fixedly installed on the outer wall of the connecting block 64. The sleeve block 63 and the connecting block 64 are rotatably connected by a fastening bolt 66.

[0036] During use, rotate the horizontal support rod 62 to adjust the angle of the horizontal support rod 62, thereby changing the position height of the installation block 65. Then, by rotating the installation block 65 and loosening or tightening the fastening bolt 66, the levelness of the installation block 65 can be adjusted so as to adapt it to the thermocouple 5, enabling the thermocouple 5 to be inserted vertically downward into the resin glue to detect the temperature, which is convenient and fast.

[0037] Furthermore, an installation cavity 67 is formed at the top of the installation block 65. The probe of the thermocouple 5 is inserted downward into the installation cavity 67. During use, there is no fixation between the thermocouple 5 and the installation cavity 67, and it is a movable installation. The support can be completed by inserting the thermocouple 5 into the installation cavity 67 from the top, which is convenient and fast.

[0038] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A bath for maintaining a constant temperature of a resin, comprising a support (1) and a bath body (2) mounted on the top of the support (1), the top of the bath body (2) being provided with a descending groove (3) for immersing fibers for coating the fibers with grease, the support (1) being provided with a temperature control mechanism (4) for regulating the constant temperature of the bath body (2), the descending groove (3) being provided with a thermocouple (5) connected to the circuit of the temperature control mechanism (4), wherein: The temperature control mechanism (4) comprises a mold temperature controller (41) arranged outside the support (1) and a constant temperature water path (44) arranged in an S shape in the top cavity inside the support (1); the mold temperature controller (41) is provided with a water outlet pipe (42) and a water return pipe (43); two connecting pipe heads (45) are installed on the outer wall of the support (1) at the side of the cavity; the two connecting pipe heads (45) are respectively plugged and fixed to the water outlet pipe (42) and the water return pipe (43); the constant temperature water path (44) is located directly below the bath body (2).

2. A bath for maintaining a constant temperature of a resin according to claim 1, characterized in that: The connecting pipe head (45) is divided into an inlet pipe head (451) and an outlet pipe head (452); the outlet pipe (42) is plugged and fixed to the inlet pipe head (451); the return pipe (43) is plugged and fixed to the outlet pipe head (452); and the two ends of the constant temperature water circuit (44) are respectively plugged and fixed to the inlet pipe head (451) and the outlet pipe head (452).

3. A bath for maintaining a constant temperature of a resin according to claim 1, characterized in that: A plurality of support bars (46) are arranged at the bottom of the cavity of the bracket (1) below the constant temperature water channel (44); support blocks (47) are fixedly mounted at the bottom of the plurality of support bars (46); and semicircular support grooves (48) adapted to the outer wall of the constant temperature water channel (44) are provided at the top of the plurality of support bars (46).

4. A bath for maintaining a constant temperature of a resin according to claim 3, characterized in that: The bathtub also includes a support mechanism (6) arranged on the thermocouple (5), the support mechanism (6) including a vertical support rod (61) fixedly mounted on the top of the bracket (1) near the side, the top end of the vertical support rod (61) is hingedly connected to a horizontal support rod (62), a sleeve block (63) is fixedly mounted on one end of the horizontal support rod (62) away from the vertical support rod (61), a connecting block (64) is movably mounted in the sleeve block (63), a mounting block (65) for mounting the thermocouple (5) is fixedly mounted on the outer wall of the connecting block (64), and the sleeve block (63) and the connecting block (64) are rotatably connected via a fastening bolt (66).

5. A bath for maintaining a constant temperature of a resin according to claim 4, characterized in that: The top of the mounting block (65) is provided with a mounting cavity (67), and the thermocouple (5) probe is inserted downward into the mounting cavity (67).

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