A large two-color molding shaft mechanism used in automotive product molds

Abstract

The invention discloses a large-scale two-color molding shaft mechanism applied to automobile product molds, comprising a bottom plate code template, a molding shaft assembly and a mold core, the bottom plate code template is movably connected to the mold core through the molding shaft assembly, the molding shaft assembly is installed between the bottom plate code template and the mold core, a rear pressure plate and a rear bearing provide support and limit for the molding shaft assembly, prevent the molding shaft assembly from loosening from the bottom plate code template, increase the stability of the mechanism, the mold core receives the injection molding of a first color product, the output end of the cylinder drives the cylinder ejector rod to the right to realize the ejection of the mold core, a PLC control chip controls the ejection frequency of the cylinder and the rotation angle of the mounting frame according to the automation program, the mounting frame rotates, drives the mold core to rotate, and the cylinder controls the mold core to retract and close the mold to inject the second color product again, the automation control process is coordinated with the mechanical structure, the action continuity and the accuracy of the ejection size are greatly improved, there is no need to manually operate the mechanical equipment, the workload of workers is reduced, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile product mold production, and in particular to a large-scale two-color molding rotating shaft mechanism applied to automobile product molds. Background Art

[0002] The proportion of plastics used in automotive parts is getting higher and higher. The two-color headlights have actually been made of glass and plastic for 40 years. Now the headlights have gradually evolved from single color to two-color, and the molding method must also be changed to two-color injection molding. The process of two-color injection molding is to perform a second single-color injection molding on the mold core. However, after the first color injection molding is completed, the mold core needs to be reversed. The existing mold core reversing adopts a manual and mechanical method, and the mold core is ejected and rotated by manually operating the machine. However, the action continuity of the manually operated machine is not strong, the ejection size accuracy is low, the workload of workers is large, and the cost is increased. Summary of the invention

[0003] The purpose of the present invention is to provide a large-scale two-color molding shaft mechanism applied to automobile product molds, which has the advantages of high mechanism stability, strong action continuity, high precision of ejection size, reduced workload of workers, reduced costs and greater practicality, and can solve the problems of weak action continuity, low precision of ejection size, heavy workload of workers and increased costs in the prior art of manually operated machinery.

[0004] To achieve the above object, the present invention provides the following technical solutions: a large-scale two-color molding shaft mechanism applied to automobile product molds, comprising a base plate code template, a molding shaft assembly and a mold core, the base plate code template is movably connected to the mold core through the molding shaft assembly, a first through hole is processed inside the base plate code template, and the molding shaft assembly is installed inside the first through hole;

[0005] The molding shaft assembly includes a rear pressure plate, a rear bearing, a telescopic shaft body, a core connection stud, a front bearing, a front pressure plate and a B plate. The rear bearing is sleeved inside the rear pressure plate. The rear pressure plate and the rear bearing form an integrated structure. The integrated structure is sleeved on the injection molding machine connection side of the telescopic shaft body. A plurality of sets of core connection studs are fixedly installed on the core connection side of the telescopic shaft body. The core connection studs are annularly arranged on the right end surface of the telescopic shaft body. The core connection studs pass through the front bearing and are fixedly connected to the front pressure plate. The front pressure plate is located inside the second through hole. The second through hole is opened inside the B plate. A core is arranged on the outside of the B plate. The core is fixedly connected to the right side wall of the front pressure plate.

[0006] The telescopic rotating shaft body includes a bearing bushing, a left connecting end, a connecting groove, a power terminal, a cylinder, a cylinder push rod, a right connecting end, a rotating shaft body and a mounting frame. The left side of the bearing bushing is fixedly connected to the left connecting end, the connecting groove is processed inside the left connecting end, the power terminal is installed inside the bearing bushing, the power terminal is electrically connected to the cylinder, the power output end of the cylinder is fixedly connected to the cylinder push rod, the cylinder push rod passes through the right connecting end and is fixedly connected to the rotating shaft body, the end of the rotating shaft body is sleeved with the mounting frame, and the outer wall of the mounting frame is fixedly connected to the core connecting stud.

[0007] Preferably, the front pressure plate is in contact with and connected to the inner wall of the second through hole, and the inner wall of the second through hole is fixedly connected to the outer wall of the front bearing.

[0008] Preferably, the position of the connecting groove matches the position of the center hole of the rear pressure plate.

[0009] Preferably, the right connecting end is fixedly connected to the right end surface of the bearing bushing.

[0010] Preferably, a PLC control chip is arranged inside the mounting frame, and the PLC control chip is electrically connected to an external electronic controller.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This large-scale two-color molding shaft mechanism is used in automobile product molds. The rear pressure plate and rear bearing provide support and limit for the installation and operation of the entire molding shaft assembly, preventing the molding shaft assembly from loosening from the bottom plate template during operation and increasing the stability of the mechanism.

[0013] 2. This large-scale two-color molding shaft mechanism used in automobile product molds adopts an automated control process in conjunction with a mechanical structure, which greatly improves the consistency of action and the accuracy of ejection dimensions, making it more practical.

[0014] 3. This large-scale two-color molding shaft mechanism used in automobile product molds does not require manual mechanical equipment operation, reducing workers' workload and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall structure assembly of the present invention;

[0017] Figure 3 It is a schematic diagram of the rear pressing plate structure of the present invention;

[0018] Figure 4 It is a schematic diagram of the rear bearing structure of the present invention;

[0019] Figure 5 It is a schematic diagram of the external structure of the telescopic shaft body of the present invention;

[0020] Figure 6 It is a schematic diagram of the internal structure of the telescopic rotating shaft body of the present invention.

[0021] In the figure: 1. bottom plate code template; 11. first through hole; 2. forming shaft assembly; 21. rear pressure plate; 22. rear bearing; 23. telescopic shaft body; 231. bearing bushing; 232. left connecting end; 233. connecting groove; 234. power terminal; 235. cylinder; 236. cylinder push rod; 237. right connecting end; 238. shaft body; 239. mounting frame; 24. core connecting stud; 25. front bearing; 26. front pressure plate; 27. B plate; 3. core. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1 A large-scale two-color molding shaft mechanism used in automobile product molds includes a base plate code template 1, a molding shaft assembly 2 and a mold core 3, and the base plate code template 1 is movably connected with the mold core 3 through the molding shaft assembly 2.

[0024] See also Figure 2 A first through hole 11 is processed inside the bottom plate code template 1, and a forming shaft assembly 2 is installed inside the first through hole 11. A core mold 3 is arranged on the outer side of the B plate 27, and the core mold 3 is fixedly connected to the right side wall of the front pressure plate 26.

[0025] See also Figure 3-5 The molding shaft assembly 2 includes a rear pressure plate 21, a rear bearing 22, a telescopic shaft body 23, a core connecting stud 24, a front bearing 25, a front pressure plate 26 and a B plate 27. The rear pressure plate 21 is internally sleeved with the rear bearing 22. The rear pressure plate 21 and the rear bearing 22 form an integrated structure, which is sleeved on the injection molding machine connection side of the telescopic shaft body 23. A plurality of sets of core connecting studs 24 are fixedly installed on the core connecting side of the telescopic shaft body 23. The core connecting studs 24 are annularly arranged on the right end surface of the telescopic shaft body 23. The core connecting studs 24 pass through the front bearing 25 and are fixedly connected to the front pressure plate 26. The front pressure plate 26 is located inside the second through hole. The second through hole is opened inside the B plate 27. The front pressure plate 26 is in contact with the inner wall of the second through hole, and the inner wall of the second through hole is fixedly connected to the outer wall of the front bearing 25.

[0026] See also Figure 6 The telescopic shaft body 23 includes a bearing bushing 231, a left connecting end 232, a connecting groove 233, a power terminal 234, a cylinder 235, a cylinder push rod 236, a right connecting end 237, a shaft body 238 and a mounting frame 239. The left side of the bearing bushing 231 is fixedly connected to the left connecting end 232. The connecting groove 233 is processed inside the left connecting end 232. The power terminal 234 is installed inside the bearing bushing 231. The power terminal 234 is electrically connected to the cylinder 235. The power output end of the cylinder 235 It is fixedly connected to the cylinder top rod 236, and the cylinder top rod 236 passes through the right connecting end 237 and is fixedly connected to the rotating shaft body 238. The end of the rotating shaft body 238 is sleeved on the mounting frame 239, and the outer wall of the mounting frame 239 is fixedly connected to the core connecting stud 24. The position of the connecting groove 233 matches the position of the center hole of the rear pressure plate 21. The right connecting end 237 is fixedly connected to the right end face of the bearing bushing 231. A PLC control chip is arranged inside the mounting frame 239, and the PLC control chip is electrically connected to an external electronic controller.

[0027] Working principle: the forming shaft assembly 2 is installed between the bottom plate code template 1 and the core 3. The left end of the forming shaft assembly 2 passes through the bottom plate code template 1 and is connected to the injection molding machine. The core 3 is installed on the right side of the B plate 27 to receive the injection molding of the first color product. After the first color product is injected, the power terminal 234 is electrically connected to the cylinder 235 to supply power to the cylinder 235. The output end of the cylinder 235 drives the cylinder push rod 236 to the right to push out, and the core connection stud 24 is pushed out through the shaft body 238 and the mounting frame 239. The core connection stud 24 is fixedly connected to the front pressure plate 26, and the front pressure plate 26 is fixedly connected to the core 3 to realize the ejection of the core 3. A PLC control chip is arranged inside the mounting frame 239, and the PLC control chip is electrically connected to an external electronic controller, and the PLC control chip is electrically connected to an electric control device inside the cylinder 235. An automated program written in advance is input into the PLC control chip through the electronic controller, and the PLC control chip controls the ejection frequency of the cylinder 235 and the rotation angle of the mounting frame 239 according to the automated program. The connection method and control process between the PLC control chip and the machine are prior arts, and will not be elaborated here. The mounting frame 239 rotates, driving the mold core 3 to rotate, and the cylinder 235 controls the mold core 3 to retract and close the mold again, and then injects the second color product.

[0028] In summary: the present invention is applied to a large-scale two-color molding shaft mechanism for automobile product molds, the molding shaft assembly 2 is installed between the bottom plate code template 1 and the mold core 3, the left end of the molding shaft assembly 2 passes through the bottom plate code template 1 and is connected to the injection molding machine, the rear pressure plate 21 and the rear bearing 22 provide support and limit for the installation and operation of the entire molding shaft assembly 2, to prevent the molding shaft assembly 2 from loosening from the bottom plate code template 1 during operation, and to increase the stability of the mechanism, the mold core 3 is installed on the right side of the B plate 27 to receive the injection molding of the first color product, after the first color product is injected, the power terminal 234 is electrically connected to the cylinder 235 to supply power to the cylinder 235, the output end of the cylinder 235 drives the cylinder push rod 236 to be ejected to the right, and the mold core connecting stud 24 is ejected through the shaft body 238 and the mounting frame 239, the mold core connecting stud 24 is fixedly connected to the front pressure plate 26, and the front pressure plate 26 is fixedly connected to the mold core 3 , to realize the ejection of the mold core 3, a PLC control chip is arranged inside the mounting frame 239, the PLC control chip is electrically connected to the external electronic controller, the PLC control chip is electrically connected to the electric control device inside the cylinder 235, the written automation program is input into the PLC control chip through the electronic controller in advance, the PLC control chip controls the ejection frequency of the cylinder 235 and the rotation angle of the mounting frame 239 according to the automation program, the connection mode and control process of the PLC control chip and the machine are the existing technology, which will not be described here, the mounting frame 239 rotates, driving the mold core 3 to rotate, the cylinder 235 controls the mold core 3 to retract and close the mold again, and then injects the second color product, the automation control process cooperates with the mechanical structure, the action continuity and the accuracy of the ejection size are greatly improved, the practicability is stronger, there is no need for manual operation of the mechanical equipment, the workload of workers is reduced, and the cost is reduced.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-scale two-color molding shaft mechanism applied to automobile product molds, comprising a base plate code template (1), a molding shaft assembly (2) and a mold core (3), wherein the base plate code template (1) is movably connected to the mold core (3) through the molding shaft assembly (2), and is characterized in that: A first through hole (11) is processed inside the base plate code template (1), and a molded rotating shaft assembly (2) is installed inside the first through hole (11); The molding shaft assembly (2) comprises a rear pressure plate (21), a rear bearing (22), a telescopic shaft body (23), a mold core connecting stud (24), a front bearing (25), a front pressure plate (26) and a B plate (27). The rear pressure plate (21) is sleeved with the rear bearing (22) inside. The rear pressure plate (21) and the rear bearing (22) form an integrated structure. The integrated structure is sleeved on the injection molding machine connection side of the telescopic shaft body (23). The mold core of the telescopic shaft body (23) is A plurality of sets of core connection studs (24) are fixedly installed on the connection side. The core connection studs (24) are annularly arranged on the right end surface of the telescopic shaft body (23). The core connection studs (24) pass through the front bearing (25) and are fixedly connected to the front pressure plate (26). The front pressure plate (26) is located inside the second through hole. The second through hole is opened inside the B plate (27). The core (3) is arranged on the outer side of the B plate (27). The core (3) is fixedly connected to the right side wall of the front pressure plate (26). The telescopic shaft body (23) comprises a bearing bushing (231), a left connecting end (232), a connecting groove (233), a power terminal (234), a cylinder (235), a cylinder push rod (236), a right connecting end (237), a shaft body (238) and a mounting frame (239). The left side of the bearing bushing (231) is fixedly connected to the left connecting end (232). The connecting groove (233) is processed inside the left connecting end (232). A power terminal (234) is installed inside the sleeve (231), the power terminal (234) is electrically connected to the cylinder (235), the power output end of the cylinder (235) is fixedly connected to the cylinder push rod (236), the cylinder push rod (236) passes through the right connecting end (237) and is fixedly connected to the rotating shaft body (238), the end of the rotating shaft body (238) is sleeved with the mounting frame (239), and the outer wall of the mounting frame (239) is fixedly connected to the mold core connecting stud (24); A PLC control chip is arranged inside the mounting frame (239), and the PLC control chip is electrically connected to an external electronic controller; The PLC control chip is electrically connected to the electric control device inside the cylinder (235), and the PLC control chip stores a pre-written automation program input through an electronic controller. The PLC control chip controls the ejection frequency of the cylinder (235) and the rotation angle of the mounting frame (239) according to the automation program.

2. According to claim 1, a large-scale two-color molding shaft mechanism used in automobile product molds is characterized by: The front pressure plate (26) is in contact with and connected to the inner wall of the second through hole, and the inner wall of the second through hole is fixedly connected to the outer wall of the front bearing (25).

3. According to claim 1, a large-scale two-color molding shaft mechanism for automobile product molds is characterized by: The position of the connecting groove (233) matches the position of the central hole of the rear pressing plate (21).

4. According to claim 1, a large-scale two-color molding shaft mechanism for automobile product molds is characterized by: The right connecting end (237) is fixedly connected to the right end surface of the bearing bushing (231).

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