Efficient mold device for PVC electrical conduit

Abstract

The utility model discloses a PVC electrical conduit efficient mold device which comprises a mounting frame, an injection molding machine is fixedly mounted on the upper surface of the mounting frame, a connecting column is rotatably mounted in an extrusion opening of the injection molding machine, a conduit mold is mounted on the outer surface of the extrusion opening of the injection molding machine in a threaded mode, and a circulating cooling mechanism is mounted in the conduit mold. The circulating cooling mechanism can conduct cooling efficiency to the casing pipe mold, and a cutting mechanism is fixedly mounted at the other end of the upper surface of the mounting frame and is in butt joint with the casing pipe mold. Through the design of the circulating cooling mechanism and the cutting mechanism, the PVC sleeve can be cured and formed in a short time through rapid cooling, deformation and non-uniform shrinkage are reduced, the stability of the size and shape of the product is ensured, the produced PVC sleeve with the specific length can be accurately cut through the automatic cutting function, and the production efficiency is improved. The length of each PVC sleeve is ensured to be consistent, and the device can be synchronous with an extrusion production line, so that the overall production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a high-efficiency mold device for PVC electrical casings. Background Art

[0002] PVC electrical conduit is a material commonly used for building wire protection, which needs to be manufactured through molds. Efficient mold devices can greatly improve production efficiency and product quality.

[0003] For example, the patent with the national authorized patent announcement number CN208697920U discloses a PVC flame retardant sleeve production extrusion mold, including a mold, one side of the mold is connected with a thermostat, and the thermostat is provided with a metal sleeve, the side of the metal sleeve away from the mold is connected with a sizing sleeve, and a conveyor belt is installed on one side of the sizing sleeve, the inner periphery of the conveyor belt is connected with a power wheel and a follower wheel, and the follower wheel is located on one side of the power wheel, a variable speed motor is provided below the conveyor belt, and a rubber plate is fused to the periphery of the conveyor belt, and a first fixed plate is welded to the periphery of the mold near the thermostat. In the utility model, it is possible to check whether the edge pressure is tight or not while the connection is engaged, to prevent one side from being loose and causing uneven thickness on both sides, to facilitate alignment and connection, and to softly support the PVC flame retardant sleeve for transportation, to prevent the deformation of the PVC flame retardant sleeve due to residual heat, to improve production efficiency, and to adjust the speed of the conveyor belt according to the production speed.

[0004] However, the above-mentioned PVC flame-retardant sleeve production extrusion die does not have the function of rapidly cooling the extruded sleeve and cutting it to a specific length during the extrusion production of the PVC sleeve, which reduces the production efficiency of the PVC sleeve during the production process. Utility Model Content

[0005] The purpose of the utility model is to provide an efficient mold device for PVC electrical conduits to solve the problem in the above-mentioned background technology that the extruded PCV conduits do not have the function of quickly cooling the extruded conduits and cutting them to a specific length during the extrusion production process, which reduces the production efficiency of the PVC conduits during the production process.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-efficiency mold device for PVC electrical casing, comprising: a mounting frame, an injection molding machine is fixedly mounted on the upper surface of the mounting frame, a connecting column is rotatably mounted in the extrusion port of the injection molding machine, a casing mold is threadedly mounted on the outer surface of the extrusion port of the injection molding machine, the casing mold sleeves the connecting column, and the injection molding machine squeezes the raw material into the gap between the casing mold and the connecting column to form a PVC casing;

[0008] Wherein, a circulating cooling mechanism is installed in the sleeve mold, and the circulating cooling mechanism can transmit the cooling efficiency to the sleeve mold;

[0009] A cutting mechanism is fixedly mounted on the other end of the upper surface of the mounting frame, and the cutting mechanism is connected to the sleeve mold for the cooled PVC sleeve to be pushed in.

[0010] Preferably, the circulating cooling mechanism comprises a shell-and-tube cooler, the shell-and-tube cooler is fixedly mounted on the upper surface of the mounting frame, and a water pump is fixedly mounted on the upper end of the outer surface of the shell-and-tube cooler;

[0011] Among them, the water outlet of the shell and tube cooler is connected to a first water pipe, the other end of the first water pipe is connected to the water inlet of the water pump, and the water outlet of the water pump is connected to a second water pipe, which runs through the sleeve mold and is provided with a threaded heat pipe.

[0012] Preferably, the other end of the threaded heat pipe is connected and installed with a third water pipe, and the third water pipe is connected and installed with the water inlet of the shell-and-tube cooler, so that the shell-and-tube cooler is connected through the outer surface with a fourth water pipe installed in another group of water inlets of the water pump, so that the second water pipe can supply water into the threaded heat pipe again, and the two groups of water inlets of the water pump are connected.

[0013] Preferably, the cutting mechanism comprises a connecting plate, the connecting plate is fixedly mounted on the upper surface of the mounting frame, a custodian ring is fixedly mounted inside the connecting plate, and the connecting plate is connected to and communicated with the sleeve mold via the custodian ring;

[0014] Wherein, a conveyor belt is installed on the inner upper surface of the connecting plate, and the conveyor belt is flush with the connecting plate.

[0015] Preferably, a cutting inlet is provided at the lower end of the outer surface of the hosting ring, and a cutter can be inserted into the cutting inlet. The cutter is fixedly mounted on the upper surface of the piston rod of the electric push rod, and the electric push rod is fixedly mounted on the upper surface of the mounting frame.

[0016] Preferably, a photoelectric sensor is fixedly installed in the connecting plate, a signal transmission end of the photoelectric sensor is connected to a signal receiving end of a controller, and a control output end of the controller is electrically connected to an electric control end of the electric push rod.

[0017] Preferably, the models of the photoelectric sensor and controller are SICK WTB4 and S7-1200 respectively.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. Through the design of injection molding machine, sleeve mold, connecting column, circulating cooling mechanism and cutting mechanism, when producing PVC sleeve, the PVC raw material can be poured into the injection molding machine for heating and melting, and then injected into the sleeve mold. The sleeve mold can make the extruded PVC material into a tube through the connecting column in the center, and then the injection molding machine can continue to push to extend the length of the PVC sleeve. The PVC material is extruded into a tube and slides in the sleeve mold. During the pushing process, it will be continuously cooled and hardened by the circulating cooling mechanism. The cooled and hardened PVC sleeve will be pushed into the cutting mechanism, and the PVC sleeve push When it reaches a certain length in the cutting mechanism, it will be automatically cut off. When there is sufficient PVC material, the PVC sleeve can be continuously produced and automatically cut off, thereby increasing the production efficiency of the PVC sleeve. Through this rapid cooling, the PVC sleeve can be solidified and formed in a short time, reducing deformation and uneven shrinkage, ensuring the stability of product size and shape, and the automatic cutting function can accurately cut the PVC sleeve produced with a specific length to ensure that the length of each PVC sleeve is consistent and meet the customer's specifications. This automatic cutting function can be synchronized with the extrusion production line to improve the overall production efficiency.

[0020] 2. Through the design of the shell-and-tube cooler, the water pump, the first water pipe, the second water pipe, the third water pipe, the fourth water pipe and the threaded heat-conducting pipe, while the PVC material is injection molded into the sleeve mold and the PVC sleeve is formed, the water pump will draw the cooled liquid in the shell-and-tube cooler into the water pump through the first water pipe, and the water pump will supply the coolant into the threaded heat-conducting pipe through the second water pipe, and the threaded heat-conducting pipe will transfer the cooling degree to the sleeve mold to achieve the effect of cooling the formed PVC sleeve, and the coolant after transferring the cooling degree to the sleeve mold will be pushed into the shell-and-tube cooler from the other end of the threaded heat-conducting pipe for cooling again, and the overcooled coolant will enter the water pump again through the first water pipe and be supplied to the threaded heat-conducting pipe again to achieve the purpose of circulating cooling of the PVC sleeve in the sleeve mold, and rapid cooling can avoid defects such as bubbles and depressions on the surface of the PVC sleeve, make the product surface smoother and more beautiful, and increase the product qualification rate.

[0021] 3. Through the design of the connecting plate, electric push rod, cutter, photoelectric sensor, conveyor belt and trust ring, the cooled PVC casing will be pushed into the trust ring by the subsequently produced PCV casing. As it is continuously pushed, the PVC casing will be detected by the photoelectric sensor after it covers the lower end of the photoelectric sensor and send a signal to the controller. The controller can then start the electric push rod to push the cutter on the upper surface of the piston rod to insert it into the inlet opened at the lower end of the outer surface of the trust ring to cut off the PVC casing. The cut PVC casing will be pushed out of the trust ring by the rear end of the PVC casing and fall onto the surface of the conveyor belt and be transported away, realizing the function of automatic cutting off of PVC casing of a specific length. This automatic cutting function can ensure that the length of each PVC casing is consistent and meets the customer's specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model PVC electrical casing high-efficiency mold device;

[0023] Figure 2 It is a structural schematic diagram of the sleeve mold and the connecting column of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the circulating cooling mechanism of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the truncation mechanism of the utility model.

[0026] In the figure: 1. mounting frame; 2. injection molding machine; 201. sleeve mold; 202. connecting column; 3. circulating cooling mechanism; 301. shell and tube cooler; 302. water pump; 303. first water pipe; 304. second water pipe; 305. third water pipe; 306. threaded heat pipe; 307. fourth water pipe; 4. cutting mechanism; 401. connecting plate; 402. electric push rod; 403. cutter; 404. photoelectric sensor; 405. conveyor belt; 406. hosting ring; 407. inlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0029] like Figure 1-Figure 2 As shown, a high-efficiency mold device for PVC electrical casing comprises: a mounting frame 1, an injection molding machine 2 is fixedly mounted on the upper surface of the mounting frame 1, a connecting column 202 is rotatably mounted in the extrusion port of the injection molding machine 2, a casing mold 201 is threadedly mounted on the outer surface of the extrusion port of the injection molding machine 2, and the casing mold 201 sleeves the connecting column 202 therein, so that the injection molding machine 2 squeezes the raw material into the gap between the casing mold 201 and the connecting column 202 to form a PVC casing;

[0030] The sleeve mold 201 is provided with a circulating cooling mechanism 3, which can transmit cooling efficiency to the sleeve mold 201;

[0031] A cutting mechanism 4 is fixedly mounted on the other end of the upper surface of the mounting frame 1 , and the cutting mechanism 4 is connected to the sleeve mold 201 for the cooled PVC sleeve to be pushed in.

[0032] Through the design of the injection molding machine 2, the sleeve mold 201, the connecting column 202, the circulating cooling mechanism 3 and the cutting mechanism 4, when the PVC sleeve is produced, the PVC raw material can be poured into the injection molding machine 2 to heat and melt, and then injected into the sleeve mold 201, and the sleeve mold 201 can form the extruded PVC material into a tube through the connecting column 202 at the center, and then the injection molding machine 2 can continue to push to extend the length of the PVC sleeve, and the PVC material is extruded into a tube and slides in the sleeve mold 201. During the process of being pushed, it will be continuously cooled and hardened by the circulating cooling mechanism 3, and the cooled and hardened PVC sleeve will be pushed into the cutting mechanism 4, and when the PVC sleeve is pushed into the cutting mechanism 4 and reaches a specific length, it will be automatically cut off. When the PVC material is sufficient, the PVC sleeve can be continuously produced and automatically cut off, thereby increasing the production efficiency of the PVC sleeve. Through this rapid cooling, the PVC sleeve can be solidified and formed in a short time, reducing deformation and uneven shrinkage, ensuring the stability of product size and shape, and the automatic cutting function can accurately cut the PVC sleeve produced with a specific length, ensuring that the length of each PVC sleeve is consistent and meeting the customer's specification requirements. This automatic cutting function can be synchronized with the extrusion production line to improve the overall production efficiency.

[0033] like Figure 3 As shown, the circulating cooling mechanism 3 includes a shell-and-tube cooler 301, which is fixedly mounted on the upper surface of the mounting frame 1, and a water pump 302 is fixedly mounted on the upper end of the outer surface of the shell-and-tube cooler 301;

[0034] Among them, the water outlet of the shell and tube cooler 301 is connected to a first water pipe 303, the other end of the first water pipe 303 is connected to the water inlet of the water pump 302, and the water outlet of the water pump 302 is connected to a second water pipe 304, which runs through the sleeve mold 201 and is provided with a threaded heat pipe 306.

[0035] The other end of the threaded heat pipe 306 is connected to a third water pipe 305, which is connected to the water inlet of the shell-and-tube cooler 301. The shell-and-tube cooler 301 is connected to a fourth water pipe 307 installed on its outer surface and connected to another group of water inlets of the water pump 302 for the second water pipe 304 to supply water to the threaded heat pipe 306 again. The two groups of water inlets of the water pump 302 are connected.

[0036] Through the design of the shell-and-tube cooler 301, the water pump 302, the first water pipe 303, the second water pipe 304, the third water pipe 305, the fourth water pipe 307 and the threaded heat pipe 306, while the PVC material is injected into the sleeve mold 201 to form the PVC sleeve, the water pump 302 will pump the cooled liquid in the shell-and-tube cooler 301 into the water pump 302 through the first water pipe 303, and the water pump 302 will supply the coolant into the threaded heat pipe 306 through the second water pipe 304, and the threaded heat pipe 306 will transfer the cooling degree to the sleeve mold 201. This achieves the effect of cooling the formed PVC sleeve, and the coolant after the cooling is transferred to the sleeve mold 201 will be pushed into the shell and tube cooler 301 from the other end of the threaded heat pipe 306 for cooling again, and the cooled coolant will enter the water pump 302 through the first water pipe 303 again and be supplied to the threaded heat pipe 306 again to achieve the purpose of circulating cooling on the PVC sleeve in the sleeve mold 201, and rapid cooling can avoid defects such as bubbles and depressions on the surface of the PVC sleeve, making the product surface smoother and more beautiful, thereby increasing the product qualification rate.

[0037] like Figure 4 As shown, the cutting mechanism 4 includes a connecting plate 401, which is fixedly mounted on the upper surface of the mounting frame 1, and a custodian ring 406 is fixedly mounted inside the connecting plate 401, and the connecting plate 401 is connected to the sleeve mold 201 through the custodian ring 406;

[0038] A conveyor belt 405 is installed on the inner upper surface of the connecting plate 401 , and the conveyor belt 405 is flush with and opposite to the connecting plate 401 .

[0039] An inlet 407 is provided at the lower end of the outer surface of the hosting ring 406 , into which the cutter 403 can be inserted. The cutter 403 is fixedly mounted on the upper surface of the piston rod of the electric push rod 402 , and the electric push rod 402 is fixedly mounted on the upper surface of the mounting frame 1 .

[0040] A photoelectric sensor 404 is fixedly installed in the connecting plate 401 . The signal transmission end of the photoelectric sensor 404 is connected to the signal receiving end of the controller. The control output end of the controller is electrically connected to the electric control end of the electric push rod 402 .

[0041] The models of the photoelectric sensor 404 and the controller are SICK WTB4 and S7-1200 respectively.

[0042] Through the design of the connecting plate 401, the electric push rod 402, the cutter 403, the photoelectric sensor 404, the conveyor belt 405 and the trust ring 406, the cooled PVC sleeve will be pushed into the trust ring 406 by the subsequently produced PCV sleeve. As it is continuously pushed, the PVC sleeve will be detected by the photoelectric sensor 404 until it covers the lower end of the photoelectric sensor 404 and sends a signal to the controller. The controller can then start the electric push rod 402 to push the cutter 403 on the upper surface of the piston rod to insert into the inlet 407 opened at the lower end of the outer surface of the trust ring 406 to cut off the PVC sleeve. The cut PVC sleeve will be pushed out of the trust ring 406 by the rear end of the PVC sleeve and fall onto the surface of the conveyor belt 405 to be transported away, thereby realizing the function of automatically cutting off the PVC sleeve of a specific length. This automatic cutting function can ensure that the length of each PVC sleeve is consistent to meet the customer's specifications.

[0043] According to the above technical scheme, the working steps of this scheme are summarized and sorted out: when producing PVC sleeves, the PVC raw materials can be poured into the injection molding machine 2 to heat and melt, and then injected into the sleeve mold 201, and the sleeve mold 201 can make the extruded PVC material into a tube through the connecting column 202 in the center, and then the injection molding machine 2 can continue to push to extend the length of the PVC sleeve, and the PVC material is extruded into a tube and slides in the sleeve mold 201. During the process of being pushed, the coolant will be supplied to the threaded heat pipe 306 through the second water pipe 304 through the water pump 302, and the threaded heat pipe 306 will transfer the cooling degree to the sleeve mold 201 to achieve the effect of cooling the formed PVC sleeve, and the coolant after transferring the cooling degree to the sleeve mold 201 will be pushed from the other end of the threaded heat pipe 306 into the tube-in-tube cooler 301 for cooling again, and the cooled coolant will pass through the first water again The tube 303 enters the water pump 302 and is again supplied to the threaded heat-conducting tube 306 to realize the purpose of circulating cooling on the PVC sleeve in the sleeve mold 201, and the cooled PVC sleeve will be pushed into the tube ring 406 by the subsequently produced PCV sleeve. As it is continuously pushed, until the PVC sleeve covers the lower end of the photoelectric sensor 404, it will be detected by the photoelectric sensor 404 and send a signal to the controller. The controller can then start the electric push rod 402 to push the cutter 403 on the upper surface of the piston rod to insert into the inlet 407 opened at the lower end of the outer surface of the tube ring 406 to cut off the PVC sleeve. The cut PVC sleeve will be pushed out of the tube ring 406 by the rear end of the PVC sleeve, fall on the surface of the conveyor belt 405 and be transported away, thereby realizing the function of automatically cutting off the PVC sleeve of a specific length. Through this automatic cutting function, the length of each PVC sleeve can be ensured to be consistent to meet the customer's specifications.

[0044] In summary: This rapid cooling can solidify the PVC sleeve in a short time, reduce deformation and uneven shrinkage, and ensure the stability of product size and shape. The automatic cut-off function can accurately cut the PVC sleeve produced in a specific length to ensure that the length of each PVC sleeve is consistent and meets customer specifications. This automatic cut-off function can be synchronized with the extrusion production line to improve overall production efficiency.

[0045] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-efficiency mold device for PVC electrical casing, characterized in that: include: A mounting frame (1), an injection molding machine (2) is fixedly mounted on the upper surface of the mounting frame (1), a connecting column (202) is rotatably mounted in the extrusion port of the injection molding machine (2), a sleeve mold (201) is threadedly mounted on the outer surface of the extrusion port of the injection molding machine (2), the sleeve mold (201) sleeves the connecting column (202) therein, and the injection molding machine (2) squeezes the raw material into the gap between the sleeve mold (201) and the connecting column (202) to form a PVC sleeve, wherein: A circulating cooling mechanism (3) is installed in the sleeve mold (201), and the circulating cooling mechanism (3) can transmit cooling efficiency to the sleeve mold (201); A cutting mechanism (4) is fixedly mounted on the other end of the upper surface of the mounting frame (1), and the cutting mechanism (4) is connected to the sleeve mold (201) for pushing the cooled PVC sleeve into it.

2. A high-efficiency mold device for PVC electrical conduit according to claim 1, characterized in that: The circulating cooling mechanism (3) comprises a shell-and-tube cooler (301), the shell-and-tube cooler (301) is fixedly mounted on the upper surface of the mounting frame (1), and a water pump (302) is fixedly mounted on the upper end of the outer surface of the shell-and-tube cooler (301); The water outlet of the shell-and-tube cooler (301) is connected to a first water pipe (303) installed thereon, the other end of the first water pipe (303) is connected to a water inlet of a water pump (302), the water outlet of the water pump (302) is connected to a second water pipe (304) installed thereon, the second water pipe (304) penetrates into the sleeve mold (201) and is provided with a threaded heat-conducting pipe (306).

3. A high-efficiency mold device for PVC electrical casing according to claim 2, characterized in that: The other end of the threaded heat-conducting pipe (306) is connected to a third water pipe (305), and the third water pipe (305) is connected to the water inlet of the shell-and-tube cooler (301) and is connected to the shell-and-tube cooler (301) through the outer surface thereof. The fourth water pipe (307) is connected to another group of water inlets of the water pump (302) and is connected to the second water pipe (304) for supplying water into the threaded heat-conducting pipe (306) again. The two groups of water inlets of the water pump (302) are connected.

4. A high-efficiency mold device for PVC electrical casing according to claim 3, characterized in that: The cutting mechanism (4) comprises a connecting plate (401), the connecting plate (401) is fixedly mounted on the upper surface of the mounting frame (1), a pedestal ring (406) is fixedly mounted inside the connecting plate (401), and the connecting plate (401) is connected to and communicates with the sleeve mold (201) via the pedestal ring (406); Wherein, a conveyor belt (405) is installed on the inner upper surface of the connecting plate (401) for transmission, and the conveyor belt (405) is flush with and opposite to the connecting plate (401).

5. A high-efficiency mold device for PVC electrical casing according to claim 4, characterized in that: The lower end of the outer surface of the hosting ring (406) is provided with an inlet (407), and the inlet (407) can allow the cutter (403) to be inserted. The cutter (403) is fixedly mounted on the upper surface of the piston rod of the electric push rod (402), and the electric push rod (402) is fixedly mounted on the upper surface of the mounting frame (1).

6. A high-efficiency mold device for PVC electrical casing according to claim 5, characterized in that: A photoelectric sensor (404) is fixedly installed in the connecting plate (401), a signal transmission end of the photoelectric sensor (404) is connected to a signal receiving end of a controller, and a control output end of the controller is electrically connected to an electric control end of the electric push rod (402).

7. A high-efficiency mold device for PVC electrical casing according to claim 6, characterized in that: The models of the photoelectric sensor (404) and the controller are SICK WTB4 and S7-1200 respectively.

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