Hot runner point glue feeding device for thin-wall mold

Abstract

The invention discloses a hot runner point glue feeding device for a thin-wall mold. The hot runner point glue feeding device comprises a processing table, a first mold, a second mold and a liquid injection gun, two vertical plates are vertically and fixedly arranged at the upper end of the machining table in a spaced mode, and a first mold which can rotate so that an opening of the first mold can face downwards and the section of the first mold can be semicircular is horizontally arranged between the two vertical plates. A second mold which can move towards the first mold and abut against the first mold to be used in cooperation with the first mold is horizontally and rotatably arranged at the upper end of the portion, located beside the first mold, of the machining table, so that mold cavities of the second mold and the first mold are spliced together, and a hot runner communicating with the interior of the second mold vertically penetrates through the top end of the second mold. According to the hot runner point glue feeding device for the thin-wall mold, the problems that in the prior art, in the using process, after a product in the mold is formed and opened every time, a finished product in the mold needs to be manually taken out, the working efficiency is reduced, and in the material taking process, waste heat can be generated on the surface of the finished product, and workers are prone to being scalded are solved.

Description

Technical Field

[0001] The present invention relates to the field of molds, and in particular, to a hot runner point gate injection device for thin-walled molds. Background Art

[0002] After the thin-walled mold is installed on the injection molding machine, the feeding port and the docking port of the mold are called the gate of the mold, and the points on the product are called the gate points. After the plastic passes through the syringe, enters the cavity through the gate point and the hot runner, it will fill the cavity. After cooling, the mold can be opened and the plastic part can be taken out to complete the entire injection molding process.

[0003] After retrieval, the Chinese patent application number is "CN202322561088.1", which discloses a hot runner point gate injection device for thin-walled molds, including a rotating disk. At least two lower molds are provided at the upper end of the rotating disk. The two lower molds are arranged in the circumferential direction of the axis of the rotating disk and are fixedly connected to the rotating disk. An upper mold is provided above the lower mold, and the upper mold is floatingly connected to the lower mold. A hollow cylinder base is provided at the lower end of the rotating disk. The upper end of the hollow cylinder base is rotationally connected to the rotating disk through a first bearing ring. A support ring is provided inside the hollow cylinder base, and the support ring is fixedly connected to the hollow cylinder base. The upper end of the support ring is rotationally connected to the lower end of the rotating disk through a second bearing ring.

[0004] The inventor found the following problems in the prior art during the implementation of the present invention:

[0005] During use, after each product in the mold is molded and the mold is opened, it is necessary to manually take out the finished product in the mold, which not only reduces the work efficiency, but also the surface of the finished product has residual heat during the material taking process, which is easy to scald the staff.

[0006] Therefore, it is an urgent problem to be solved by the present invention to provide a hot runner point gate injection device for thin-walled molds that can realize the function of automatic unloading during use, improve work efficiency, and avoid the staff being scalded by the residual heat of the finished product during the manual material taking process. Summary of the Invention

[0007] In view of the above technical problems, the object of the present invention is to overcome the problem that in the prior art, after each product in the mold is molded and the mold is opened, it is necessary to manually take out the finished product in the mold, which not only reduces the work efficiency, but also the surface of the finished product has residual heat during the material taking process, which is easy to scald the staff. Thus, a hot runner point gate injection device for thin-walled molds that can realize the function of automatic unloading during use, improve work efficiency, and avoid the staff being scalded by the residual heat of the finished product during the manual material taking process is provided.

[0008] To achieve the above object, the present invention provides a hot runner point gate injection device for thin-walled molds, and the device includes: a processing table, a first mold, a second mold, and an injection gun; wherein;

[0009] Two vertical plates are spaced apart and vertically fixed at the upper end of the processing table, and a first mold which can be rotated so that its opening faces downward and has a semicircular cross-section is horizontally arranged between the two. A second mold which can be moved toward the first mold and abutted against each other for use in cooperation is horizontally and rotatably arranged on the upper end of the processing table located next to the first mold, so that the mold cavities of the two are spliced together, a hot runner which is vertically penetrated through the top of the second mold and is connected to the interior thereof, a horizontal plate is horizontally fixed between the tops of the two vertical plates, and an injection gun which can inject liquid through the hot runner into the mold cavity spliced together by the first mold and the second mold is fixed on the horizontal plate.

[0010] Preferably, the device further comprises a driving mechanism for driving the first mold to rotate in a horizontal direction, wherein the driving mechanism comprises: a power gear and a rack set; wherein,

[0011] The first mold is horizontally and rotatably arranged between the two vertical plates through a rotating shaft, and a rack group is evenly and fixedly arranged on the circumferential side wall of the first mold, and a power gear meshing with the first mold is horizontally and rotatably arranged on the vertical plate located next to it.

[0012] Preferably, a driving motor is horizontally and rotatably arranged on the vertical plate, and the output shaft of the driving motor is coaxially connected to the end of the rotating shaft through a coupling.

[0013] Preferably, an auxiliary gear capable of meshing and connecting with the first mold is horizontally and rotatably arranged on the vertical plate located on the top of the first mold.

[0014] Preferably, the upper end of the processing table located directly below the first mold is provided with a feeding port connected to the interior thereof, and a feeding mechanism is provided through the interior of the processing table to receive and transport the finished product dropped from the first mold, and the feeding mechanism comprises: a feeding roller, a feeding belt and a feeding motor; wherein,

[0015] A discharge port is provided on one side of the processing table, and two feed racks are vertically fixedly arranged inside the processing table and on the side wall thereof located next to the discharge port, and a feed roller is horizontally and rotatably arranged on the top of each feed rack, and the two feed rollers are connected together through a feed belt transmission, and a feed motor for driving the corresponding feed roller is horizontally fixed on any feed rack, and the output shaft of the feed motor is coaxially connected to the corresponding feed roller through a coupling.

[0016] Preferably, the device further comprises a moving mechanism for driving the second mold to move in a horizontal direction, wherein the moving mechanism comprises: an electric telescopic rod; wherein:

[0017] A guide groove is vertically and penetratingly formed at the upper end of the processing table beside the first mold. A moving frame in an inverted L shape is vertically and fixedly arranged on the second mold facing away from the first mold. The bottom end of the moving frame passes through the guide groove adapted to it and extends into the interior of the processing table. The electric telescopic rod is horizontally and fixedly arranged on the inner wall of the processing table, and its telescopic end is fixed on the moving frame.

[0018] Preferably, a guide rod is horizontally and fixedly arranged in the guide groove. A guide hole for the guide rod to pass through is horizontally and penetratingly formed on the moving frame. The moving frame is horizontally and movably assembled on the guide rod through the guide hole.

[0019] Preferably, the electric telescopic rod is a cylinder or a servo electric cylinder.

[0020] According to the above technical solution, the beneficial effects of the thin-wall mold hot runner point gate injection device provided by the present invention during use are as follows:

[0021] During use, rotate the first mold to adjust its opening to face the second mold, and drive the second mold to approach the first mold until the opening of the second mold abuts against the opening of the first mold, so that the mold cavities of the two are spliced together. Then, insert the liquid outlet end of the liquid outlet pipe of the liquid injection gun into the hot runner on the second mold adapted to it, so as to inject plastic into the mold cavity formed by splicing the first mold and the second mold through the liquid injection gun.

[0022] After injection molding, drive the second mold to move backward to its initial position so that the second mold leaves the first mold. After it leaves, rotate the first mold so that its opening faces downward, and pour out the finished product from the first mold, thereby realizing the function of automatic unloading. There is no need for manual removal of the finished product from the mold, which improves work efficiency and also avoids the problem of being scalded by the finished product during the manual material taking process.

[0023] In summary, the present invention can realize the function of automatic unloading, improve work efficiency, and avoid the staff being scalded by the residual heat of the finished product during the manual material taking process.

[0024] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part; and the parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the following specific implementation manners, but do not constitute a limitation to the present invention. In the drawings:

[0026] Figure 1 It is a schematic structural diagram of the hot runner point gate injection device for thin-wall molds provided in a preferred embodiment of the present invention;

[0027] Figure 2 It is a structural sectional view of the hot runner point gate injection device for thin-wall molds provided in a preferred embodiment of the present invention;

[0028] Figure 3 is Figure 2 the structural sectional view in;

[0029] Figure 4 It is a schematic structural diagram of the hot runner point gate injection device for thin-wall molds provided in a preferred embodiment of the present invention at a certain moment during the working process.

[0030] Description of the reference numerals in the drawings

[0031] 1. Processing table; 2. Vertical plate; 3. First mold; 4. Second mold; 5. Liquid injection gun; 6. Feeding mechanism; 7. Material discharge port; 8. Driving gear; 9. Rack group; 10. Auxiliary gear; 11. Moving frame; 12. Electric telescopic rod; 13. Guide rod; 14. Hot runner; 15. Horizontal plate; 16. Driving motor; 17. Rotating shaft. Specific embodiments

[0032] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0033] As Figures 1-4 shown, a hot runner point gate injection device for thin-wall molds provided by the present invention, the device includes: a processing table 1, a first mold 3, a second mold 4 and a liquid injection gun 5; wherein;

[0034] On the upper end of the processing table 1, two vertical plates 2 are fixedly arranged at intervals and vertically, and between them, a first mold 3 which can rotate to make its opening face downward and has a semicircular cross-section is horizontally arranged. On the upper end of the processing table 1 beside the first mold 3, a second mold 4 which is horizontally arranged and can rotate and can move towards the first mold 3 and abut against each other for cooperation is arranged, so that the mold cavities of the two are spliced together. A hot runner 14 communicating with its interior is vertically penetrated through the top end of the second mold 4. A horizontal plate 15 is fixedly arranged horizontally between the tops of the two vertical plates 2. A liquid injection gun 5 which can inject plastic into the mold cavity where the first mold 3 and the second mold 4 are spliced together through the hot runner 14 is fixedly arranged on the horizontal plate 15.

[0035] In the above solution, when in use, as Figures 1-3As shown in the figure, rotate the first mold 3 to adjust its opening towards the second mold 4, and drive the second mold 4 to approach the first mold 3 until the opening of the second mold 4 abuts against the opening of the first mold 3, so that the mold cavities of the two are spliced together. Then, insert the liquid outlet end of the liquid outlet pipe of the liquid injection gun 5 into the hot runner 14 on the second mold 4 that is adapted to it, so as to inject plastic into the mold cavity formed by splicing the first mold 3 and the second mold 4 through the liquid injection gun 5.

[0036] After injection molding, drive the second mold 4 to move backward to its initial position so that the second mold 4 leaves the first mold 3. After it leaves, rotate the first mold 3 so that its opening faces downward, and pour out the finished product from the first mold 3, thus realizing the function of automatic unloading, eliminating the need for manual removal of the finished product from the mold, improving work efficiency, and at the same time avoiding the problem of being scalded by the finished product during the manual material removal process.

[0037] In addition, a vibrator is fixedly arranged on the outer wall of the first mold 3. After the product in the mold is formed and before the mold is opened, the formed product in the mold is vibrated by the vibrator to prevent the formed product on the forming side from sticking to the inside of the mold cavity and making it difficult to demold the product.

[0038] The liquid injection gun 5 is a well-known technical means in the art. Therefore, its specific structure and working principle will not be elaborated here.

[0039] In a preferred embodiment of the present invention, the device further includes a driving mechanism for driving the first mold 3 to rotate in the horizontal direction. The driving mechanism includes: a power gear 8 and a rack group 9; wherein,

[0040] The first mold 3 is horizontally and rotatably arranged between the two vertical plates 2 through a rotating shaft 17, and a rack group is uniformly and fixedly arranged on the circumferential side wall of the first mold 3. A power gear 8 that is horizontally and rotatably arranged and meshed with the first mold 3 is arranged on the vertical plate 2 beside it.

[0041] In the above solution, during use, by driving the power gear 8 to rotate, the first mold 3 meshed with it can be driven to rotate during the rotation process, so that the opening of the first mold 3 faces downward for easy unloading.

[0042] In a preferred embodiment of the present invention, a driving motor 16 is horizontally and rotatably arranged on the vertical plate 2, and its output shaft is coaxially connected to the end of the rotating shaft 17 through a coupling.

[0043] In the above solution, the driving motor 16 is used to drive the power gear 8 to rotate, so that during the rotation process, the first mold 3 meshed and connected therewith can be driven to rotate, so that the opening of the first mold 3 faces downward to facilitate discharging.

[0044] In a preferred embodiment of the present invention, an auxiliary gear 10 capable of meshing and connecting with the first mold 3 is horizontally and rotatably arranged on the vertical plate 2 at the top of the first mold 3.

[0045] In the above solution, the auxiliary gear 10 is used to improve the supporting ability of the first mold 3, so as to improve the stability and reliability of the rotated first mold 3.

[0046] In addition, several gears having the same function as the auxiliary gear 10 are horizontally and rotatably arranged on the vertical plate 2 between the power gear 8 and the auxiliary gear 10 along the circumferential direction of the first mold 3.

[0047] In a preferred embodiment of the present invention, a blanking port 7 communicating with the inside thereof is opened at the upper end of the processing table 1 directly below the first mold 3, and a feeding mechanism 6 is arranged through the inside of the processing table 1 to receive and convey the finished products dropped from the first mold 3. The feeding mechanism 6 includes: a feeding roller, a feeding belt and a feeding motor; wherein,

[0048] An outlet is opened on one side of the processing table 1. Two feeding frames are vertically and fixedly arranged on the inside of the processing table 1 and on its side wall beside the outlet respectively. A feeding roller is horizontally and rotatably arranged at the top of each feeding frame, and the two feeding rollers are driven and connected together by a feeding belt. A feeding motor for driving the corresponding feeding roller is horizontally and fixedly arranged on any one of the feeding frames, and the output shaft of the feeding motor is coaxially connected with the corresponding feeding roller through a coupling.

[0049] In the above solution, during use, the feeding mechanism 6 can receive the products dropped from the first mold 3 and convey the received products out of the inside of the processing table 1, so as to realize the functions of automatic material receiving and feeding.

[0050] Specifically, the feeding mechanism is used to drive the feeding roller connected thereto to rotate, so as to drive the feeding belt to run horizontally to convey the received finished products away.

[0051] In addition, the width of the conveyor belt is greater than the width of the blanking port 7, the width of the blanking port 7 is greater than the length of the finished product, and rubber strips are fixedly arranged on both sides of the conveyor belt to prevent the finished product falling from the blanking port 7 from sliding out from both sides of the conveyor belt.

[0052] In a preferred embodiment of the present invention, the device further includes a moving mechanism for driving the second mold 4 to move horizontally. The moving mechanism includes: an electric telescopic rod 12; wherein,

[0053] A guide groove is vertically penetrated through the upper end of the processing table 1 beside the first mold 3. A moving frame 11 in an inverted L shape is vertically and fixedly arranged on the second mold 4 facing away from the first mold 3. The bottom end portion of the moving frame 11 passes through the guide groove adapted to it and extends into the interior of the processing table 1. The electric telescopic rod 12 is horizontally and fixedly arranged on the inner wall of the processing table 1, and its telescopic end is fixed on the moving frame 11.

[0054] In the above solution, during use, when the telescopic end of the electric telescopic rod 12 is driven to extend out of or retract into its cylinder part, the second mold 4 can be driven to move linearly horizontally stably and reliably.

[0055] In a preferred embodiment of the present invention, a guide rod 13 is horizontally and fixedly arranged in the guide groove. A guide hole for the guide rod 13 to pass through is horizontally penetrated through the moving frame 11, and the moving frame 11 is horizontally and movably assembled on the guide rod 13 through this guide hole.

[0056] In the above solution, through the cooperation of the guide hole on the moving frame 11 and the guide rod 13, a guiding effect is achieved, so that the electric telescopic rod 12 can drive the support 13 and the second mold 4 thereon to move linearly horizontally stably and reliably.

[0057] In a preferred embodiment of the present invention, the electric telescopic rod 12 is a cylinder or a servo electric cylinder.

[0058] In summary, the thin-wall mold hot runner point gate injection device provided by the present invention overcomes the problems in the prior art that during use, after each product in the mold is molded and the mold is opened, it is necessary for workers to manually take out the finished product in the mold, which not only reduces the work efficiency, but also the surface of the finished product has residual heat during the material taking process and is likely to scald the workers.

[0059] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0060] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination manners.

[0061] Furthermore, any combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A hot runner point gate injection device for a thin-wall mold, characterized in that The device comprises: a processing table (1), a first mold (3), a second mold (4) and a liquid injection gun (5); wherein; Two vertical plates (2) are arranged at intervals and fixed vertically on the upper end of the processing table (1), and a first mold (3) which can be rotated so that its opening faces downward and has a semicircular cross-section is arranged horizontally between the two. A second mold (4) which can be moved toward the first mold (3) and abutted against each other for use in cooperation is arranged horizontally and rotatably on the upper end of the processing table (1) located next to the first mold (3), so that the mold cavities of the two molds are spliced together. A hot runner (14) which is connected to the interior of the second mold (4) is vertically penetrated through the top of the second mold (4). A horizontal plate (15) is fixed horizontally between the tops of the two vertical plates (2), and an injection gun (5) which can inject into the mold cavity of the first mold (3) and the second mold (4) spliced together through the hot runner (14) is fixed on the horizontal plate (15).

2. The hot runner point gate injection device for thin-wall molds according to claim 1, characterized in that, The device also includes a driving mechanism for driving the first mold (3) to rotate in a horizontal direction, the driving mechanism including: a power gear (8) and a rack set (9); wherein: The first mold (3) is horizontally and rotatably arranged between the two vertical plates (2) via a rotating shaft (17), and a rack set is evenly and fixedly arranged on the circumferential side wall of the first mold (3), and a power gear (8) meshingly connected with the first mold (3) is horizontally and rotatably arranged on the vertical plate (2) located next to it.

3. The hot runner point gate injection device for thin-wall molds according to claim 1, characterized in that, A driving motor (16) is horizontally and rotatably arranged on the vertical plate (2), and its output shaft is coaxially connected to the end of the rotating shaft (17) through a coupling.

4. The hot runner point gate injection device for thin-walled molds according to claim 2, wherein An auxiliary gear (10) capable of meshing and connecting with the first mold (3) is horizontally and rotatably arranged on the vertical plate (2) located on the top of the first mold (3).

5. The hot runner point gate feeding device for thin-wall molds according to claim 1, characterized in that, The upper end of the processing table (1) located directly below the first mold (3) is provided with a feeding port (7) connected to the interior thereof, and a feeding mechanism (6) is provided through the interior of the processing table (1) to receive and transport the finished product dropped from the first mold (3), wherein the feeding mechanism (6) comprises: a feeding roller, a feeding belt and a feeding motor; wherein: A discharge port is provided on one side of the processing table (1), and two feed racks are vertically fixedly arranged inside the processing table (1) and on its side wall located next to the discharge port, and a feed roller is horizontally and rotatably arranged on the top of each feed rack, and the two feed rollers are connected together through a feed belt transmission. A feed motor for driving the corresponding feed roller is horizontally fixed on any feed rack, and the output shaft of the feed motor is coaxially connected to its corresponding feed roller through a coupling.

6. The hot runner point gate injection device for thin-wall molds according to claim 1, wherein The device also includes a moving mechanism for driving the second mold (4) to move in a horizontal direction, the moving mechanism including: an electric telescopic rod (12); wherein: A guide groove is vertically penetrated and opened at the upper end of the processing table (1) beside the first mold (3). A moving frame (11) in an inverted L shape is vertically and fixedly arranged on the second mold (4) facing away from the first mold (3). The bottom end portion of the moving frame (11) passes through the guide groove adapted to it and extends into the interior of the processing table (1). The electric telescopic rod (12) is horizontally and fixedly arranged on the inner wall of the processing table (1), and its telescopic end is fixed on the moving frame (11).

7. The hot runner point gate injection device for thin-wall molds according to claim 6, characterized in that, A guide rod (13) is horizontally and fixedly arranged in the guide groove. A guide hole for the guide rod (13) to pass through is horizontally penetrated and opened on the moving frame (11), and the moving frame (11) is horizontally and movably assembled on the guide rod (13) through the guide hole.

8. The hot runner point gate injection device for thin-wall molds according to claim 6, characterized in that, The electric telescopic rod (12) is a cylinder or a servo electric cylinder.

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