Christmas tree branch injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a Christmas branch injection mold which comprises a sprue gate, an upper fixing plate is mounted on the upper portion of the sprue gate, a female mold block is in threaded connection with the bottom of the upper fixing plate, a guide column is mounted at the bottom of the female mold block, and a lower fixing seat is sleeved outside the guide column. A male die block is installed in the lower fixing base, supporting columns are installed on the periphery of the bottom of the male die block, a return pin is movably installed at one end of the male die block, a clamping plate is welded to the bottom of the return pin, limiting columns are in threaded connection with the periphery of the clamping plate, and an ejector pin is installed on the top of the clamping plate. Springs are installed outside the limiting columns, connecting rod frames are welded to the bottoms of the clamping plates, and lifting rods are installed at one ends of connecting rods. According to the improved injection mold, the lifting rod moves up and down to drive the ejector pin during demolding, rapid demolding can be achieved, the demolding mechanism is provided with a spring for protection, and the service life of the ejector pin and the mold is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for Christmas tree branches. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. Its advantages are fast production speed, high efficiency, automated operation, a wide variety of colors and patterns, shapes from simple to complex, sizes from large to small, and precise product dimensions. The product is easy to update and can be made into parts with complex shapes. Injection molding is suitable for mass production and molding processing fields such as products with complex shapes. At a certain temperature, completely molten plastic material is added, flows into the mold cavity, and after cooling and solidification, a molded product is obtained. It is one of the important processing methods.

[0003] Today's injection molding machine, also known as injection molding machine or injection machine, is the main equipment used for injection molding products. It is the main molding equipment for thermoplastic plastics or thermosetting plastics using plastic molding molds to make plastic products of various shapes. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. Therefore, the injection mold is also very important. The precision and life of the mold directly determine the quality of the product, and it should also be measured from multiple angles when designing the mold.

[0004] In the process of realizing the utility model, the inventors found that the prior art had the following problems: 1. Most injection molding machines use internal demolding, and often the equipment will get stuck and unable to demold when used for a long time. At this time, repair and operation are extremely difficult, and the line needs to be stopped for repair, which delays production efficiency; 2. Injection molds are used frequently, and most equipment does not have buffer protection during the continuous opening, closing and demolding activities, which will greatly shorten the service life of the mold and affect the quality of the injection molded parts. Utility Model Content

[0005] The purpose of the utility model is to provide a Christmas tree branch injection mold to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a Christmas tree branch injection mold, including a pouring port, an upper fixing plate is installed on the upper part of the pouring port, a female module is threadedly connected to the bottom of the upper fixing plate, a guide column is installed at the bottom of the female module, a lower fixing seat is sleeved on the outside of the guide column, a male module is installed inside the lower fixing seat, a support column is installed around the bottom of the male module, a return pin is movably installed at one end of the male module, a clamp is welded at the bottom of the return pin, a limit column is threadedly connected around the clamp, a top pin is installed on the top of the clamp, a spring is installed on the outside of the limit column, a connecting rod frame is welded at the bottom of the clamp, a lifting rod is installed at one end of the connecting rod frame, and a finished product is attached to the upper surface of the male module.

[0006] Further preferably, the return pin and the male module are movably connected.

[0007] Further preferably, the pouring port is vertically installed at the center of the mother module.

[0008] Further preferably, the top of the ejector pin fits with the bottom of the male module, and the ejector pins are equidistantly installed on the surface of the male module.

[0009] Further preferably, the center lines of the female module and the male module are consistent.

[0010] Further preferably, a movable connection is formed between the fixing seats below the lifting rod.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, the demoulding operation of the injection mold is that the lifting rod links the ejector pin to eject the finished product, the operation is simple and direct, and the mold will not be stuck. At the same time, the lifting rod has a travel limit to protect the safety of the ejector pin.

[0013] In the utility model, the demoulding mechanism of the injection mold is equipped with a spring buffer protection, which ensures the service life of the mold under multiple frequencies of use. It also has the effect of storing force. When the return pin is pressed down, the force is stored. After the mother mold is lifted, it can immediately rebound and cooperate with the lifting rod to quickly demould. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the explosion structure of the utility model from another perspective;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model module;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model when it is opened;

[0018] Figure 5 This is a schematic diagram of the axonometric structure of the utility model.

[0019] In the figure: 1. pouring gate; 2. upper fixing plate; 3. female module; 4. guide column; 5. finished product; 6. return pin; 7. male module; 8. lifting rod; 9. support column; 10. lower fixing seat; 11. ejector pin; 12. spring; 13. splint; 14. connecting rod frame; 15. limit column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a Christmas tree branch injection mold, including a pouring port 1, an upper fixing plate 2 is installed on the upper part of the pouring port 1, a female module 3 is threadedly connected to the bottom of the upper fixing plate 2, a guide column 4 is installed at the bottom of the female module 3, a lower fixing seat 10 is sleeved on the outside of the guide column 4, a male module 7 is installed inside the lower fixing seat 10, a support column 9 is installed around the bottom of the male module 7, a return pin 6 is movably installed at one end of the male module 7, a clamping plate 13 is welded to the bottom of the return pin 6, a limiting column 15 is threadedly connected around the clamping plate 13, a top pin 11 is installed on the top of the clamping plate 13, a spring 12 is installed on the outside of the limiting column 15, a connecting rod frame 14 is welded to the bottom of the clamping plate 13, a lifting rod 8 is installed at one end of the connecting rod frame 14, and a finished product 5 is attached to the upper surface of the male module 7.

[0022] In this embodiment, Figure 3 As shown, the return pin 6 and the male module 7 form a movable connection; the return pin 6 is installed in the male module 7 and can move up and down. When the female module 3 is pressed down, the return pin 6 drops down to be flush with the top of the male module 7, and the splint 13 is linked to drop as a whole, making room for the injection liquid, and the coordination is flexible and fast.

[0023] In this embodiment, Figure 5 As shown, the pouring port 1 is vertically installed at the center of the female module 3; such installation helps the injection liquid to quickly flow into the mold cavity of the female module 3 and the male module 7, and being in the center position is conducive to the injection liquid to flow evenly around to meet the working speed.

[0024] In this embodiment, Figure 1 As shown, the top of the ejector pin 11 fits with the bottom of the male module 7, and the ejector pin 11 is installed equidistantly on the surface of the male module 7; the ejector pin 11 is inserted into the bottom of the female mold of the male module 7 through the clamping plate 13. The function of the ejector pin 11 is to eject the formed finished product 5 from the mold for easy removal. The flush and equidistant installation helps to evenly lift the finished product 5 without damaging the finished product 5, thereby ensuring the quality after processing.

[0025] In this embodiment, Figure 1As shown, the center lines of the female module 3 and the male module 7 are consistent; when the female module 3 and the male module 7 are molded up and down during casting, it is very important that the center lines of the two are consistent, which is related to whether the injection molded product 5 is symmetrical and qualified. Otherwise, flash and misalignment will appear, which greatly reduces the qualified rate of the product. Only by ensuring the consistency of the center can the qualified symmetry of the mold cavity be guaranteed and the production of unqualified products can be avoided.

[0026] In this embodiment, Figure 4 As shown, a movable connection is formed between the lifting rod 8 and the lower fixed seat 10; the lifting rod 8 passes through one side of the lower fixed seat 10 and can move up and down, so that the finished product 5 can be ejected by controlling the ejector 11 on the clamping plate 13 through the lifting rod 8. The externally movable lifting rod 8 is convenient for the staff to operate, and the position of the ejector 11 can also be judged by the up and down position of the lifting rod 8, so the maintenance of the mold is simple and quick.

[0027] The use method and advantages of the utility model: When the Christmas tree branch injection mold is used, the working process is as follows:

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the Christmas tree branch injection mold adopts a pouring processing technology, and the material liquid can be directly injected into the female module 3 and the male module 7 of the injection mold through the pouring port 1. The specific working principle is: the female module 3 and the male module 7 are accurately molded up and down through the guide column 4. At this time, the female module 3 will flatten the raised return pin 6 on the male module 7. At the same time, the return pin 6 drives the entire splint 13 to descend. The splint 13 is reduced to a fixed position by the height of the limiting column 15. The spring 12 installed on the limiting column 15 is stretched to store force, and the ejector pin 11 on the splint 13 also returns to the bottom flush position of the male module 7 concave mold, and the lifting rod 8 is at the bottom. The part is then returned to its original position, and then the liquid is poured in through the pouring port 1. After the liquid fills the mold cavity and is cooled and formed, the mother module 3 is moved up and the lifting rod 8 is lifted up. At this time, the connecting rod frame 14 connected to the lifting rod 8 lifts the entire clamping plate 13, and the ejector pin 11 can easily eject the finished product 5 from the mold by utilizing the stored force of the spring 12. The spring 12 also has a buffering effect, protecting the clamping plate 13 from impact, greatly extending the service life of the injection mold, and still ensuring the accuracy of the mold under multi-frequency use. The position of the external lifting rod 8 can determine the position status of the internal ejector pin 11, which is extremely convenient for later disassembly and maintenance.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A Christmas tree branch injection mold, comprising a pouring port (1), characterized in that: An upper fixing plate (2) is installed on the upper part of the pouring port (1), a female module (3) is threadedly connected to the bottom of the upper fixing plate (2), a guide column (4) is installed on the bottom of the female module (3), a lower fixing seat (10) is sleeved on the outside of the guide column (4), a male module (7) is installed inside the lower fixing seat (10), support columns (9) are installed around the bottom of the male module (7), and a return pin (6) is movably installed at one end of the male module (7). ), a clamp (13) is welded to the bottom of the return pin (6), a limiting column (15) is threadedly connected to the surface of the clamp (13), a ejector pin (11) is installed on the top of the clamp (13), a spring (12) is installed on the outside of the limiting column (15), a connecting rod frame (14) is welded to the bottom of the clamp (13), a lifting rod (8) is installed at one end of the connecting rod frame (14), and the upper surface of the male module (7) is fitted with the finished product (5).

2. A Christmas tree branch injection mold according to claim 1, characterized in that: The return pin (6) and the male module (7) form a movable connection.

3. The Christmas tree branch injection mold according to claim 1, characterized in that: The pouring port (1) is vertically installed at the center of the mother module (3).

4. The Christmas tree branch injection mold according to claim 1, characterized in that: The top of the ejector pin (11) fits with the bottom of the male module (7), and the ejector pin (11) is installed at equal distances on the surface of the male module (7).

5. The Christmas tree branch injection mold according to claim 1, characterized in that: The center lines of the female module (3) and the male module (7) are consistent with each other.

6. The Christmas tree branch injection mold according to claim 1, characterized in that: The lifting rod (8) and the lower fixing seat (10) are movably connected.

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