Hot runner junction box anti-collision structure for injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a hot runner junction box anti-collision structure for an injection mold. Comprising a front mold base and a rear mold base, the rear mold base is provided with a hot runner, a junction box and an anti-collision structure, and the junction box is provided with a connector; the anti-collision structure comprises a plurality of protection plates, a protection area is defined by the protection plates, the junction box is installed in the protection area, and the tops of the protection plates are flush with the top of the connector or higher than the top of the connector. Compared with the prior art, the plurality of protection plates are arranged, and the tops of the plurality of protection plates are flush with the top of the connector or higher than the top of the connector; by means of the structure, the peripheries of the connector and the junction box can be protected, the situation that the junction box and the connector are impacted by external objects is avoided, it can be guaranteed that the junction box and the connector are used more reliably, and the service life can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an anti-collision structure for a hot runner junction box of an injection mold. Background Art

[0002] A hot runner (Hot Runner Systems) is a heating component system used in an injection mold to inject molten plastic particles into the cavity of the mold. A hot runner mold is a brand-new structure that heats the sprue and runner of a traditional mold or a three-plate mold, and does not require removing the runner and sprue during each forming process.

[0003] The hot runner ensures that the plastic in the runner and gate remains in a molten state by heating. Since heating rods and heating coils are provided near or at the center of the runner, the entire runner from the outlet of the injection machine nozzle to the gate is in a high-temperature state, keeping the plastic in the runner molten. Generally, after shutdown, it is not necessary to open the runner to remove the condensate. When starting the machine again, only the runner needs to be heated to the required temperature. It can be seen that the hot runner junction box is an important component for connecting the hot runner system and the temperature control system. It is responsible for transmitting temperature sensing signals and power to ensure the normal operation of the hot runner system.

[0004] For the convenience of subsequent wiring operations, the hot runner junction box is usually installed on the outer surface of the injection mold. However, the inventor found during actual production operations that there are defects in such a structured injection mold: First, during the placement or transportation of the mold, it is easy to hit the hot runner junction box, which may cause damage to the hot runner junction box. Second, when disassembling and assembling the injection mold to the injection machine, since the hot runner junction box on the outer surface is very close to the tie bars, the tie bars often hit the hot runner junction box during the disassembly and assembly of the injection mold to the injection machine, resulting in damage to the hot runner junction box. When the hot runner junction box is damaged, subsequent docking through the hot runner socket is impossible, and the hot runner cannot be powered on, filled with glue, heated, or temperature controlled, seriously affecting the reliability and service life of the hot runner junction box.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the Utility Model

[0006] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide an anti-collision structure for a hot runner junction box of an injection mold, which effectively solves the problem that the hot runner junction box of the injection mold is easily damaged by impact in the existing technology, thereby improving the reliability and service life of the hot runner junction box.

[0007] To achieve the above purpose, the present utility model adopts the following technical solution: An anti-collision structure for a hot runner junction box of an injection mold, comprising

[0008] The front mold base has a front mold core installed on the rear side.

[0009] The rear mold base is movably installed in the front - rear direction on the rear side of the front mold base; a rear mold core is installed on the front side of the rear mold base. When the rear mold base moves relative to one side of the front mold base, the front mold core and the rear mold core can be closed to enclose a molding cavity for an injection - molded product; the rear mold base is provided with a hot runner, and the hot runner is communicated with the molding cavity.

[0010] It further includes a junction box, a connector installed on the top of the junction box, and an anti - collision structure installed on the rear mold base. The anti - collision structure includes a plurality of protection plates. The plurality of protection plates enclose a protection area, the junction box is installed in the protection area, and the tops of the plurality of protection plates are flush with the top of the connector or higher than the top of the connector.

[0011] The beneficial effect of the anti - collision structure of the hot - runner junction box for the injection mold provided in this application is that: compared with the prior art, through the plurality of protection plates provided, and the tops of the plurality of protection plates are flush with the top of the connector or higher than the top of the connector; with such a structure, it can protect the periphery of the connector and the junction box, avoid the situation that the junction box and the connector are impacted by external objects, ensure that the junction box and the connector are more reliable in use, and can improve the service life.

[0012] Moreover, since it effectively protects the connector and the junction box, when the injection mold is installed in the injection molding machine, by using the plurality of protection plates, it can avoid the problem that the tie - bar impacts the connector and the junction box during the installation process of the injection mold, thereby improving the installation efficiency and ensuring that the junction box and the connector will not be damaged during the installation process.

[0013] As a preferred solution: the plurality of protection plates include a first plate body and a second plate body extending left - right, and a third plate body and a fourth plate body extending front - rear; the first plate body and the second plate body are arranged at a front - rear interval, and the third plate body and the fourth plate body are arranged at a left - right interval to enclose a protection area.

[0014] As a preferred solution: the width of the front - rear interval between the first plate body and the second plate body is greater than the front - rear width of the junction box; the width of the left - right interval between the third plate body and the fourth plate body is greater than the left - right width of the junction box.

[0015] As a preferred solution: the tops of the first plate body, the second plate body, the third plate body and the fourth plate body are all flush, and the tops of the first plate body, the second plate body, the third plate body and the fourth plate body are 5 mm - 10 mm higher than the top of the connector.

[0016] As a preferred solution: The rear mold base is installed with an ejector plate, and the ejector plate is installed with ejector pins extending into or retracting from the molding cavity; The rear mold base is provided with a first air cylinder, the telescopic rod of the first air cylinder is installed with a first pushing block, and the first pushing block is fixedly connected to the ejector plate; A distance is set between the left side of the first plate body and the front side of the third plate body to form a first notch, and the first pushing block can enter or exit the first notch.

[0017] As a preferred solution: The right side of the first plate body and the front side of the fourth plate body are in mutual abutment or spaced apart, the right side of the second plate body and the rear side of the fourth plate body are in mutual abutment or spaced apart, and the left side of the second plate body and the rear side of the third plate body are in mutual abutment or spaced apart.

[0018] As a preferred solution: The first plate body, the second plate body, the third plate body and the fourth plate body are all provided with first through holes, and the rear mold base is provided with first screw holes equal in number to the first through holes; When the first plate body, the second plate body, the third plate body and the fourth plate body are installed on the rear mold base, one first screw hole can be coaxially arranged with one first through hole.

[0019] As a preferred solution: The rear surface of the junction box is provided with a first wire passing hole; The rear surface of the rear mold base is provided with a first wire passing groove, and one end of the first wire passing groove is communicated with the first wire passing hole.

[0020] As a preferred solution: The rear surface of the rear mold base is provided with a second notch. When the hot runner is installed on the rear mold base, one side surface of the hot runner is exposed in the second notch; The other end of the first wire passing groove is conductively connected to the second notch.

[0021] As a preferred solution: The first wire passing groove is provided with a plurality of first wire clips. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a three-dimensional structure schematic diagram of a hot runner junction box anti-collision structure for an injection mold provided by an embodiment of the present application;

[0024] Figure 2 It is Figure 1 Another three-dimensional structure schematic diagram of the hot runner junction box anti-collision structure for an injection mold shown in;

[0025] Figure 3 It is Figure 2 A partial structure decomposition diagram of the hot runner junction box anti-collision structure for an injection mold shown in;

[0026] Figure 4 is Figure 1 The full sectional structure schematic diagram of the anti-collision structure of the hot runner junction box for an injection mold shown in the figure.

[0027] Among them, each reference numeral in the figure:

[0028] 10. Anti-collision structure of the hot runner junction box for an injection mold;

[0029] 11. Front mold base; 111. Front mold core; 12. Rear mold base; 121. Rear mold core; 122. Hot runner; 123. Ejector plate; 1231. Ejector pin; 124. First cylinder; 1241. First push block; 125. First screw hole; 126. First wire trough; 1261. First wire clamp; 127. Second notch; 13. Molding cavity; 14. Junction box; 141. Connector; 142. First wire passing hole; 15. Anti-collision structure; 151. First plate body; 152. Second plate body; 153. Third plate body; 154. Fourth plate body; 155. Protection area; 156. First notch; 157. First through hole. Specific embodiments

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0033] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0034] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] Please refer to Figures 1 to 4 together, and now a collision prevention structure 10 for a hot runner junction box used in an injection mold provided by an embodiment of the present application will be described. The collision prevention structure 10 for a hot runner junction box used in an injection mold includes: a front mold base 11 and a rear mold base 12.

[0036] A front mold core 111 is installed at the rear side of the front mold base 11, and the rear mold base 12 is movably installed back and forth at the rear side of the front mold base 11; a rear mold core 121 is installed at the front side of the rear mold base 12. When the rear mold base 12 moves relative to one side of the front mold base 11, the front mold core 111 and the rear mold core 121 can be closed to form a molding cavity 13 for an injection molded product; the rear mold base 12 is provided with a hot runner 122, and the hot runner 122 communicates with the molding cavity 13. During specific use, the injection mold is installed in an injection molding machine, and the injection molding machine can inject hot melt slurry into the molding cavity 13 through the hot runner 122. After the hot melt slurry cools and solidifies, the front mold core 111 and the rear mold core 121 are opened, and the product can be molded. A junction box 14 is installed on the rear mold base 12, a connector 141 is installed on the top of the junction box 14, the junction box 14 is used to connect the hot runner 122, and the connector 141 is used to bridge an external control device to ensure the normal operation of the hot runner 122 system by controlling the power on, glue injection, heating and temperature sensing of the hot runner 122. A collision prevention structure 15 is installed on the rear mold base 12. The collision prevention structure 15 includes a plurality of protective plates. The plurality of protective plates enclose a protection area 155, the junction box 14 is installed in the protection area 155, and the tops of the plurality of protective plates are flush with the top of the connector 141 or higher than the top of the connector 141.

[0037] Specifically, through a plurality of protective plates arranged such that the tops of the plurality of protective plates are flush with the top of the connector 141 or higher than the top of the connector 141; with such a structure, it is possible to protect the surroundings of the connector 141 and the junction box 14, avoiding the situation where the junction box 14 and the connector 141 are impacted by external objects, ensuring that the junction box 14 and the connector 141 are more reliable in use and can extend the service life; moreover, since effective protection is provided for the connector 141 and the junction box 14, when the injection mold is installed in the injection molding machine, by means of the arrangement of the plurality of protective plates, it is possible to avoid the problem that the tie bars impact the connector 141 and the junction box 14 during the installation process of the injection mold, thereby improving the installation efficiency and ensuring that the junction box 14 and the connector 141 will not be damaged during the installation process.

[0038] In some embodiments of the present application, the plurality of protective plates include a first plate body 151 and a second plate body 152 extending horizontally from left to right, and a third plate body 153 and a fourth plate body 154 extending horizontally from front to back; the first plate body 151 and the second plate body 152 are arranged at a front-back interval, and the third plate body 153 and the fourth plate body 154 are arranged at a left-right interval to enclose a protection area 155. The width of the front-back interval between the first plate body 151 and the second plate body 152 is greater than the front-back width of the junction box 14; the width of the left-right interval between the third plate body 153 and the fourth plate body 154 is greater than the left-right width of the junction box 14.

[0039] Specifically, by arranging the first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 at intervals from the junction box 14 respectively, a safety interval function is achieved, so as to ensure that the first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 will not impact the junction box 14 during the impact process, and the protection effect is better.

[0040] Preferably, the tops of the first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 are flush, and the tops of the first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 are 5 mm - 10 mm higher than the top of the connector 141. With such a structure, the protection effect is better.

[0041] In some other embodiments of the present application, the ejector plate 123 is installed on the rear mold base 12, and ejector pins 1231 extending into or retracting from the molding cavity 13 are installed on the ejector plate 123; a first air cylinder 124 is provided on the rear mold base 12, and a first push block 1241 is installed on the telescopic rod of the first air cylinder 124, and the first push block 1241 is fixedly connected to the ejector plate 123; a first notch 156 is formed by arranging the left side of the first plate body 151 and the front side of the third plate body 153 at an interval, and the first push block 1241 can enter or exit the first notch 156.

[0042] Continuing, the right side of the first plate body 151 abuts against or is spaced from the front side of the fourth plate body 154, the right side of the second plate body 152 abuts against or is spaced from the rear side of the fourth plate body 154, and the left side of the second plate body 152 abuts against or is spaced from the rear side of the third plate body 153.

[0043] Preferably, when the third plate body 153 and the fourth plate body 154 are spaced from the corresponding first plate body 151 or second plate body 152, the spacing distance is less than the diameter of the tie bar of the injection molding machine, which can prevent the problem that the tie bar damages the junction box 14 or the connector 141 due to the shaking of the injection mold during the process of installing the injection mold into the injection molding machine; compared with the structure of using anti-collision columns to protect the junction box 14 or the connector 141 in the traditional technology, its all-round protection effect is better, and it can not only prevent the impact of large items, but also prevent the impact of small items.

[0044] In some embodiments of the present application, the first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 are all cut from S50C steel plates, and the thickness of each plate body is between 5 mm and 15 mm, preferably using plate bodies with equal thickness. The first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 are all provided with first through holes 157, and the rear mold base 12 is provided with first screw holes 125 having the same number as the first through holes 157; when the first plate body 151, the second plate body 152, the third plate body 153 and the fourth plate body 154 are installed on the rear mold base 12, one first screw hole 125 can be coaxially arranged with one first through hole 157.

[0045] Specifically, the rear surface of the junction box 14 is provided with a first wire passing hole 142; the rear surface of the rear mold base 12 is provided with a first wire passing groove 126, and one end of the first wire passing groove 126 is communicated with the first wire passing hole 142. The rear surface of the rear mold base 12 is provided with a second notch 127. When the hot runner 122 is installed on the rear mold base 12, one side surface of the hot runner 122 is exposed in the second notch 127; the other end of the first wire passing groove 126 is conductively connected to the second notch 127. The first wire passing groove 126 is provided with a plurality of first wire clips 1261. When the cable of the junction box 14 is connected to the hot runner 122, it can pass through the first wire passing hole 142, and extend to the side where the hot runner 122 is located through the first wire passing groove 126 and the second notch 127, so as to facilitate the operator to connect the wires; at the same time, the first wire passing groove 126 is used to facilitate the storage of the cable, so that the cable will not be exposed on the outer surface of the injection mold, making it look more regular.

[0046] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A hot runner junction box anti-collision structure for an injection mold, comprising: A front mold base (11), the rear side of which is provided with a front mold core (111); The rear mold base (12) is installed on the rear side of the front mold base (11) in a manner that it can move forward and backward; a rear mold core (121) is installed on the front side of the rear mold base (12); when the rear mold base (12) moves relative to one side of the front mold base (11), the front mold core (111) and the rear mold core (121) can be molded together and enclose a molding cavity (13) of an injection molded product; the rear mold base (12) is provided with a hot runner (122), and the hot runner (122) is connected to the molding cavity (13); Features: The invention also comprises a junction box (14), a connector (141) installed on the top of the junction box (14), and an anti-collision structure (15) installed on the rear mold base (12), wherein the anti-collision structure (15) comprises a plurality of protective plates, the plurality of protective plates enclosing a protective area (155), the junction box (14) being installed in the protective area (155), and the tops of the plurality of protective plates being arranged flush with or higher than the top of the connector (141).

2. The anti-collision structure of the hot runner junction box for injection mold according to claim 1, characterized in that: The plurality of protection plates include a first plate body (151) and a second plate body (152) extending leftward and rightward, and a third plate body (153) and a fourth plate body (154) extending frontward and rearward; The first plate body (151) and the second plate body (152) are arranged at a front-to-back interval, and the third plate body (153) and the fourth plate body (154) are arranged at a left-to-right interval to enclose a protective area (155).

3. The anti-collision structure of the hot runner junction box for injection mold according to claim 2, characterized in that: The width of the front-to-back spacing between the first plate body (151) and the second plate body (152) is greater than the width of the junction box (14) in the front-to-back direction; The width of the left-right spacing between the third plate body (153) and the fourth plate body (154) is greater than the width of the junction box (14) in the left-right direction.

4. The anti-collision structure of the hot runner junction box for injection mold according to claim 2 or 3, characterized in that: The tops of the first plate body (151), the second plate body (152), the third plate body (153) and the fourth plate body (154) are all arranged flush with each other, and the tops of the first plate body (151), the second plate body (152), the third plate body (153) and the fourth plate body (154) are 5 mm to 10 mm higher than the top of the connector (141).

5. The anti-collision structure of the hot runner junction box for injection mold according to claim 4, characterized in that: The rear mold base (12) is equipped with an ejector plate (123), and the ejector plate (123) is equipped with an ejector (1231) extending into or out of the molding cavity (13); The rear mold base (12) is provided with a first cylinder (124), the telescopic rod of the first cylinder (124) is installed with a first push block (1241), and the first push block (1241) is fixedly connected to the ejector plate (123); The left side of the first plate body (151) is spaced apart from the front side of the third plate body (153) and surrounds a first notch (156), and the first push block (1241) can enter or be pushed out of the first notch (156).

6. The anti-collision structure of the hot runner junction box for injection mold according to claim 4, characterized in that: The right side of the first plate body (151) and the front side of the fourth plate body (154) are in contact with each other or are spaced apart from each other, the right side of the second plate body (152) and the rear side of the fourth plate body (154) are in contact with each other or are spaced apart from each other, and the left side of the second plate body (152) and the rear side of the third plate body (153) are in contact with each other or are spaced apart from each other.

7. The anti-collision structure of a hot runner junction box for an injection mold according to claim 5 or 6, characterized in that: The first plate body (151), the second plate body (152), the third plate body (153) and the fourth plate body (154) are all provided with a first through hole (157), and the rear mold base (12) is provided with a first screw hole (125) whose number is equal to the first through hole (157); when the first plate body (151), the second plate body (152), the third plate body (153) and the fourth plate body (154) are installed on the rear mold base (12), a first screw hole (125) can be coaxially arranged with a first through hole (157).

8. The anti-collision structure of a hot runner junction box for an injection mold according to claim 1, characterized in that: The rear surface of the junction box (14) is provided with a first wire passing hole (142); A first wire passing groove (126) is provided on the rear surface of the rear mold base (12), and one end of the first wire passing groove (126) is connected to the first wire passing hole (142).

9. The anti-collision structure of the hot runner junction box for injection mold according to claim 8, characterized in that: A second notch (127) is provided on the rear surface of the rear mold base (12); when the hot runner (122) is installed on the rear mold base (12), a side surface of the hot runner (122) is exposed in the second notch (127); The other end of the first wire passing groove (126) is conductively connected to the second notch (127).

10. The anti-collision structure of a hot runner junction box for an injection mold according to claim 8 or 9, characterized in that: The first wire passage groove (126) is provided with a plurality of first wire clamps (1261).

Images