Injection molding mold for water chamber in automobile

Abstract

The utility model relates to the technical field of injection molding molds, in particular to an injection molding mold for a water chamber in an automobile. Comprising an upper die plate and a lower die plate, the upper die plate is provided with a forming groove, a core rod sliding module and a plurality of inclined guide rods, and the core rod sliding module is used for forming the inner wall of a threaded pipe opening; the lower die plate is provided with a male die and a plurality of lower sliding die blocks, the male die is used for forming the inner wall of the water chamber in the automobile, and each lower sliding die block is at least matched with one inclined guide rod; the core rod sliding module comprises a core rod sliding block, a driving sliding block and a hydraulic cylinder, the core rod sliding block is in sliding fit with the driving sliding block, the hydraulic cylinder is connected to the driving sliding block, the hydraulic cylinder is fixed to the top of the upper die plate, and the core rod sliding block and the driving sliding block are both in sliding fit with the upper die plate; the core rod sliding block and the driving sliding block are in sliding fit through an inclined guide face, and the hydraulic cylinder drives the core rod sliding block to be in butt joint with the male die. The die has the advantages of being good in forming effect and simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding molds, in particular to an injection molding mold for a water chamber in an automobile. Background Art

[0002] The automotive water chamber is used to connect multiple radiators and features a large, direct nozzle. It is a plastic part, injection molded. The nozzle-forming mold for the water chamber includes a core rod for forming the inner wall, which is driven by a slider. In the prior art, the slider with the core rod slides within the mold plate. The slider is driven to dock with other modules via an inclined guide rod. This guide rod makes it difficult for the slider to reach 100% travel, which can easily create gaps between the core rod and the other modules, affecting the product's surface quality. Furthermore, due to the small thickness of the nozzle-forming area, the slider with the core rod is subjected to high injection pressure. When molten material is injected into the molding cavity, the slider with the core rod is easily displaced, resulting in gaps in the product. Furthermore, as disclosed in patent CN220763411U, an automotive radiator water chamber injection mold employs a cylinder 704 to move a conversion element 702. The T-block at the end of the conversion element 702 slides within the T-slot of the slider 701, simultaneously driving the slider 701 upward along the guide rails. Although this structure can effectively drive the slider, guide structures need to be provided on both sides of the slider and the sliding seat, which complicates the mold processing operation. Utility Model Content

[0003] The purpose of the utility model is to provide an injection molding die for a water chamber in an automobile, which has the characteristics of good molding effect and simple mold structure.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] An injection molding mold for an automobile water chamber, wherein a threaded nozzle is provided at the end of the automobile water chamber, and the threaded nozzle is arranged obliquely relative to the automobile water chamber body. The injection molding mold comprises an upper template and a lower template, wherein the upper template is provided with a molding groove, a core rod sliding module and a plurality of oblique guide rods, wherein the core rod sliding module is used to mold the inner wall of the threaded nozzle; the lower template is provided with a punch and a plurality of lower sliding modules, wherein the punch is used to mold the inner wall of the automobile water chamber, and each of the lower sliding modules cooperates with at least one of the oblique guide rods;

[0006] The core rod sliding module includes a core rod slider, a driving slider and a hydraulic cylinder, the core rod slider and the driving slider are slidably matched, the hydraulic cylinder is connected to the driving slider, and the hydraulic cylinder is fixed to the top of the upper template, and the core rod slider and the driving slider are both slidably matched with the upper template;

[0007] The core rod slider and the driving slider are slidably matched with each other via an inclined guide surface, and the hydraulic cylinder drives the core rod slider to dock with the punch.

[0008] Furthermore, the core rod slider includes a sliding block, a core rod and a baffle, the baffle is fixed to the end surface of the slider, the sliding block is provided with a mounting hole, and the end of the core rod is fixed in the mounting hole;

[0009] The end of the core rod is provided with an inclined end surface and a side stopper, and the surface of the side stopper is smoothly connected to the inclined end surface.

[0010] Furthermore, a ramp is provided in the middle of the inclined end face, and the punch includes a fixed die and a movable die. The movable die is slidably matched with the fixed die, and the end shape of the movable die is matched with the end face of the core rod. After the mold is closed, the end face of the movable die is fitted with the end of the core rod.

[0011] Furthermore, the movable mold includes a connecting block, a top block and a side block, the connecting block is fixedly connected to the top block, the side block is provided with a connecting groove that slides with the connecting block, and the direction in which the side block slides along the connecting block is the X axis;

[0012] The side block is in sliding cooperation with the end of the fixed die, the sliding direction of the side block along the fixed die is the Z axis, and the movable die moves along the Z axis;

[0013] The top block and the side block are respectively provided with grooves matched with the side stoppers.

[0014] Furthermore, the lower mold plate is provided with a plurality of ejector pins, and at least one of the ejector pins passes through the fixed mold and is connected to the movable mold.

[0015] Furthermore, the lower template is connected to a lower mounting plate and an ejector plate, and the ejector plate is located between the lower mounting plate and the lower template; one end of the ejector is fixed to the ejector plate, and the other end of the ejector passes through the lower template and the male mold;

[0016] The ejector plate is fixedly connected to a plurality of push rods, which are slidably matched with the lower template. The lower mounting plate is fixedly connected to a guide column, which is slidably matched with the ejector plate. The end face of the guide column abuts against the lower template.

[0017] Furthermore, the plurality of lower sliding modules are divided into a rear sliding module, a front sliding module, a first side sliding module, a second side sliding module and a third side sliding module;

[0018] The rear end sliding module is used to form the rear end outer wall of the water chamber in the automobile, the front end sliding module is used to form the front end outer wall of the water chamber in the automobile, the first side sliding module and the second side sliding module are docked to form the outer wall of the threaded pipe mouth, and the first side sliding module and the third side sliding module are respectively used to form the outer side walls of the water chamber in the automobile.

[0019] Furthermore, the upper template is provided with a grouting channel, and the opening of the grouting channel is located at the top of the forming groove.

[0020] The technical solution provided by the utility model may have the following beneficial effects:

[0021] The core slide module consists of a core slider, a drive slider, and a hydraulic cylinder. The core slider is angled and joined to the punch, creating a virtually seamless gap. The core slider and punch are assembled with high reliability, achieving a superior product finish and preventing material shortages. The drive slider, fixed to the hydraulic cylinder, directly moves the core slider, eliminating the need for additional transmission mechanisms. Simply by providing inclined guide surfaces on both the drive slider and the core slider, the mold design is significantly simplified. Furthermore, the punch is divided into a fixed die and a movable die. The combined movable die is easy to assemble, and the coordination between the movable die and the core ensures reliable mold closing and easy mold opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an injection molding die for a water chamber in an automobile according to one embodiment of the present utility model;

[0023] Figure 2 Figure 1 Schematic diagram of the cooperation between the core rod sliding module and the upper mold plate of the injection molding mold of the automobile water chamber;

[0024] Figure 3 It is a schematic diagram of the upper template;

[0025] Figure 4 It is a schematic diagram of the lower template;

[0026] Figure 5 It is a schematic diagram of the cooperation between the core rod sliding module and the punch;

[0027] Figure 6 is a schematic diagram of the core rod sliding module;

[0028] Figure 7 It is a schematic diagram of the coordination of ejector pin, fixed die, connecting block and side block;

[0029] Figure 8 It is a schematic diagram of the back side of the lower die;

[0030] Figure 9 This is a schematic diagram of the water chamber in a car;

[0031] Among them, the car water chamber 01, threaded pipe mouth 011;

[0032] Upper template 1, forming groove 11, core rod sliding module 12, core rod slider 121, sliding block 1211, core rod 1212, inclined end surface 1212a, side block 1212b, baffle 1213, driving slider 122, hydraulic cylinder 123, inclined guide rod 13, grouting channel 14;

[0033] Lower template 2, punch 21, fixed mold 211, movable mold 212, connecting block 2121, ejector block 2122, side block 2123, ejector pin 22, lower mounting plate 23, ejector plate 24, push rod 25, guide column 26; rear end sliding module 201, front end sliding module 202, first side sliding module 203, second side sliding module 204, third side sliding module 205. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] The following combination Figures 1 to 9 , describing an injection molding mold for a water chamber in an automobile according to an embodiment of the present utility model.

[0036] The end of the vehicle's water chamber 01 is provided with a threaded nozzle 011, which is tilted relative to the main body of the vehicle's water chamber. The injection molding die of this embodiment includes an upper mold plate 1 and a lower mold plate 2. The upper mold plate 1 is provided with a molding groove 11, a core rod sliding module 12, and several inclined guide rods 13. The core rod sliding module 12 is used to shape the inner wall of the threaded nozzle. The lower mold plate 2 is provided with a punch 21 and several lower sliding modules. The punch 21 is used to shape the inner wall of the vehicle's water chamber, and each lower sliding module cooperates with at least one of the inclined guide rods 13.

[0037] The core rod sliding module 12 includes a core rod slider 121, a driving slider 122 and a hydraulic cylinder 123. The core rod slider 121 and the driving slider 122 are slidably matched. The hydraulic cylinder 123 is connected to the driving slider 122. The hydraulic cylinder 123 is fixed to the top of the upper template 1. The core rod slider 121 and the driving slider 122 are both slidably matched with the upper template 1.

[0038] The core rod slider 121 and the driving slider 122 are slidably matched with each other via an inclined guide surface, and the hydraulic cylinder 123 drives the core rod slider 121 to dock with the punch 21 .

[0039] When the upper mold plate 1 and the lower mold plate 2 are closed, the inclined guide rod 13 drives the several lower sliding modules to move toward the punch 21. The hydraulic cylinder 123 drives the core rod slide 121 toward the punch 21 by driving the slider 122. The molding groove 11, the core rod slide module 12, the punch 21 and the several lower sliding modules together form the molding cavity of the water chamber in the automobile. The upper mold plate 1 is provided with a grouting channel 14, the opening of which is located at the top of the molding groove 11. Molten material is injected into the molding cavity through the grouting channel 14. After cooling, the upper mold plate 1 and the lower mold plate 2 are opened. The inclined guide rod 13 then drives the several lower sliding modules away from the punch 21. The hydraulic cylinder 123 drives the slider 122 to move the core rod slide 121 in a direction away from the punch 21. The molded product can then be removed.

[0040] The driving slider 122 fixedly connected to the hydraulic cylinder 123 presses the core slider 121 against the punch 21, so that the core slider 121 is almost seamless after being assembled with the punch 21, and the surface effect of the product is good; based on the reliable pressure of the hydraulic cylinder 123, the core slider 121 is reliably assembled with the punch 21, preventing the product from being short of material. It should be noted that in this solution, the driving slider 122 fixedly connected to the hydraulic cylinder 123 directly pushes the core slider 121 to move, without any other transmission structure. It is only necessary to make the driving slider 122 and the core slider 121 have inclined guide surfaces respectively, which greatly simplifies the mold structure. The hydraulic cylinder 123 is vertically installed on the top of the upper mold plate 1. Based on the effect of the inclined guide surface, when the hydraulic cylinder 123 drives the driving slider 122 to move vertically, it pushes the core slider 121 to move obliquely, that is, to move axially along the core rod 1212, achieving the effect of smooth mold closing and opening. Exemplarily, the core rod slider 121 is provided with a concave sliding groove, and the driving slider 122 is provided with a convex sliding strip. The concave sliding groove and the convex sliding strip are slidably matched and both are inclined.

[0041] Specifically, the core rod slider 121 comprises a sliding block 1211, a core rod 1212, and a baffle 1213. The baffle 1213 is screwed to the end surface of the slider. Replacing baffles 1213 with different thicknesses allows for pipe orifices of varying lengths. The sliding block 1211 defines a mounting hole, into which the end of the core rod 1212 is screwed. It should be noted that the through-hole in the center of the baffle 1213 is in close contact with the outer wall of the core rod 1212. The end of the core rod 1212 is provided with an inclined end surface 1212a and a side block 1212b. The surface of the side block 1212b smoothly connects to the inclined end surface 1212a. The inclined end surface 1212a ensures a better fit between the end of the core rod 1212 and the punch 21. The side block 1212b is used to position the core rod 1212 and the punch 21, ensuring a smooth fit between the two.

[0042] In one embodiment of the present invention, a ramp is provided in the middle of the inclined end surface 1212a, and the male mold 21 includes a fixed mold 211 and a movable mold 212. The movable mold 212 is slidably matched with the fixed mold 211, and the end shape of the movable mold 212 is matched with the end surface of the core rod 1212. After the molds are closed, the end surface of the movable mold 212 is in contact with the end of the core rod 1212. When the upper mold plate 1 and the lower mold plate 2 are opened, the movable mold 212 moves relative to the fixed mold 211, and the movable mold 212 can assist in demolding the molded product. At the same time, based on the setting of the inclined surface, the movable mold 212 can also push the core rod 1212 to move slightly, facilitating the hydraulic pulling of the core rod slider 121 to prevent damage to the molded product.

[0043] Specifically, the movable mold 212 includes a connecting block 2121, a top block 2122, and a side block 2123. The connecting block 2121 is fixedly connected to the top block 2122, and the side block 2123 is provided with a connecting groove that slides with the connecting block 2121. The direction in which the side block 2123 slides along the connecting block 2121 is the X-axis. The side block 2123 slides with the end of the fixed mold, and the sliding direction of the side block 2123 along the fixed mold is the Z-axis. The movable mold 212 moves along the Z-axis. When the movable mold 212 moves, the top block 2122 can drive the side block 2123 to move through the connecting block 2121. Dividing the movable mold 212 into the connecting block 2121, the top block 2122, and the side block 2123 greatly reduces the difficulty of assembly. Accordingly, when the mold is closed, the several lower sliding modules all move in a plane parallel to the X-axis and the Y-axis. The top block 2122 and the side block 2123 are respectively provided with grooves that cooperate with the side block 1212b. When the mold is closed, the side block 1212b can limit the top block 2122 and the side block 2123.

[0044] In one embodiment of the present invention, the lower mold plate 2 is provided with a plurality of ejector pins 22. At least one of the ejector pins 22 passes through the fixed mold 211 and is connected to the movable mold 212. When the mold is opened, the ejector pin 22 drives the movable mold 212. It is understood that the remaining ejector pins 22 pass through the fixed mold 211 to demold other parts of the molded product.

[0045] Furthermore, the lower template 2 is connected to a lower mounting plate 23 and an ejector plate 24, and the ejector plate 24 is located between the lower mounting plate 23 and the lower template 2; one end of the ejector 22 is fixed to the ejector plate 24, and the other end of the ejector 22 passes through the lower template 2 and the punch 21;

[0046] The ejector plate 24 is fixedly connected to a plurality of push rods 25 , which slide in conjunction with the lower template 2 . The lower mounting plate 23 is fixedly connected to a guide column 26 , which slides in conjunction with the ejector plate 24 , and the end face of the guide column 26 abuts against the lower template 2 .

[0047] During mold opening, the injection molding machine's drive mechanism pushes ejector plate 24, which drives ejector pins 22 to demold the molded product. Simultaneously, ejector plate 24 pushes upper mold plate 1 via push rod 25, facilitating separation of upper and lower mold plates 1 and 2. Guide posts 26 and push rod 25 guide ejector plate 24. A return spring is also interposed between ejector plate 24 and lower mold plate 2.

[0048] In one embodiment of the present invention, the plurality of lower sliding modules are divided into a rear sliding module 201 , a front sliding module 202 , a first side sliding module 203 , a second side sliding module 204 and a third side sliding module 205 ;

[0049] The rear sliding module 201 is used to form the rear outer wall of the vehicle's water chamber, the front sliding module 202 is used to form the front outer wall of the vehicle's water chamber, the first side sliding module 203 and the second side sliding module 204 are connected to form the outer wall of the threaded nozzle, and the first side sliding module 203 and the third side sliding module 205 are respectively used to form the outer side walls of the vehicle's water chamber. The partitioned arrangement of the lower sliding modules ensures molding accuracy.

[0050] Other structures and operations of the injection molding die for the water chamber in an automobile according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0051] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish between the described features, without distinction of order or importance.

[0052] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0053] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0054] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An injection molding die for a car water chamber, wherein the end of the car water chamber is provided with a threaded nozzle, and the threaded nozzle is inclined relative to the car water chamber body, characterized in that: The injection molding die includes an upper die plate and a lower die plate, wherein the upper die plate is provided with a molding groove, a core rod sliding module and a plurality of oblique guide rods, wherein the core rod sliding module is used to mold the inner wall of the threaded pipe nozzle; the lower die plate is provided with a punch and a plurality of lower sliding modules, wherein the punch is used to mold the inner wall of the water chamber in the automobile, and each lower sliding module cooperates with at least one of the oblique guide rods; The core rod sliding module includes a core rod slider, a driving slider and a hydraulic cylinder, the core rod slider and the driving slider are slidably matched, the hydraulic cylinder is connected to the driving slider, and the hydraulic cylinder is fixed to the top of the upper template, and the core rod slider and the driving slider are both slidably matched with the upper template; The core rod slider and the driving slider are slidably matched with each other via an inclined guide surface, and the hydraulic cylinder drives the core rod slider to dock with the punch.

2. The injection molding die for the automobile water chamber according to claim 1, characterized in that: The core rod slider includes a sliding block, a core rod and a baffle, wherein the baffle is fixed to the end surface of the slider, the sliding block is provided with a mounting hole, and the end of the core rod is fixed in the mounting hole; The end of the core rod is provided with an inclined end surface and a side stopper, and the surface of the side stopper is smoothly connected to the inclined end surface.

3. The injection molding die for the automobile water chamber according to claim 2, characterized in that: A ramp is provided in the middle of the inclined end face, and the punch includes a fixed die and a movable die. The movable die is slidably matched with the fixed die, and the end shape of the movable die is matched with the end face of the core rod. After the mold is closed, the end face of the movable die is fitted with the end face of the core rod.

4. The injection molding die for the automobile water chamber according to claim 3, characterized in that: The movable mold includes a connecting block, a top block and a side block, wherein the connecting block is fixedly connected to the top block, and the side block is provided with a connecting groove that is slidably matched with the connecting block, and the sliding direction of the side block along the connecting block is the X axis; The side block is in sliding cooperation with the end of the fixed die, the sliding direction of the side block along the fixed die is the Z axis, and the movable die moves along the Z axis; The top block and the side block are respectively provided with grooves matched with the side stoppers.

5. The injection molding die for the automobile water chamber according to claim 3, characterized in that: The lower mold plate is provided with a plurality of ejector pins, and at least one of the ejector pins passes through the fixed mold and is connected to the movable mold.

6. The injection molding die for the automobile water chamber according to claim 5, characterized in that: The lower template is connected to a lower mounting plate and an ejector plate, and the ejector plate is located between the lower mounting plate and the lower template; one end of the ejector is fixed to the ejector plate, and the other end of the ejector passes through the lower template and the male mold; The ejector plate is fixedly connected to a plurality of push rods, which are slidably matched with the lower template. The lower mounting plate is fixedly connected to a guide column, which is slidably matched with the ejector plate. The end face of the guide column abuts against the lower template.

7. The injection molding die for the automobile water chamber according to claim 1, characterized in that: The plurality of lower sliding modules are divided into a rear sliding module, a front sliding module, a first side sliding module, a second side sliding module and a third side sliding module; The rear end sliding module is used to form the rear end outer wall of the water chamber in the automobile, the front end sliding module is used to form the front end outer wall of the water chamber in the automobile, the first side sliding module and the second side sliding module are docked to form the outer wall of the threaded pipe mouth, and the first side sliding module and the third side sliding module are respectively used to form the outer side walls of the water chamber in the automobile.

8. The injection molding die for the automobile water chamber according to claim 1, characterized in that: The upper template is provided with a grouting channel, and the opening of the grouting channel is located at the top end of the forming groove.

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