Quick mold core replacement structure

Abstract

The utility model relates to a die. A quick mold core replacing structure comprises a lower mold plate, a lower mold core cavity is formed in the lower mold plate, a lower mold core is arranged in the lower mold core cavity, a fixing plate and a lower mold core lifting structure are arranged below the lower mold core, a lower mold core mold closing fixing structure is installed on the fixing plate, and the lower mold core lifting structure comprises a guide column and a lifting rod; elastic supporting structures are arranged on the two sides of the lower die core. The utility model provides the structure capable of quickly replacing the mold core, which is simple in structure and capable of quickly replacing the mold core, improving the productivity of products and saving the cost. The technical problems that in the prior art, the number of mold cores is limited, much time needs to be consumed for multiple types of hardware inserts, the productivity is affected, and the cost is high are solved.

Description

Technical Field

[0001] This utility model relates to a mold, and more particularly to a quick-change mold core structure. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to create shaped objects; this tool is composed of various parts, and different molds are composed of different parts.

[0003] Currently, the traditional technical solution commonly uses a conventional one-upper-two-lower mold, with one upper mold core and two lower mold cores, produced using a vertical rotary injection molding machine. For products requiring the insertion of multiple metal inserts, this single-upper-two-lower mold cannot meet production capacity requirements. Manually inserting multiple metal inserts is time-consuming and has a long molding cycle, impacting production capacity. Summary of the Invention

[0004] This utility model provides a simple structure that allows for quick mold core replacement, thereby increasing product production capacity and saving costs. It solves the technical problems of the existing technology, such as the limited number of mold cores, the need for more time to process multiple hardware inserts, which affects production capacity and results in high costs.

[0005] The above-mentioned technical problem of this utility model is solved by the following technical solution: a quick-change mold core structure includes a lower template, a lower mold core cavity within the lower template, a lower mold core within the lower mold core cavity, a fixing plate and a lower mold core lifting structure below the lower mold core, a lower mold core closing and fixing structure mounted on the fixing plate, and a lower mold core lifting structure including guide columns and lifting rods; elastic support structures are provided on both sides of the lower mold core. Multiple lower mold cores are designed, and through the guide columns and lifting rods in conjunction with the elastic support structures, quick replacement of the lower mold cores is achieved. The lower mold cores can be replaced simultaneously with mold opening, thereby achieving cyclic production and increasing production capacity.

[0006] Preferably, the elastic support structure includes movable support plates on both sides, with handles fixed to the movable support plates via two connecting rods, and compression springs installed on the connecting rods. When the lower mold core is located within the lower mold plate, the movable support plates abut against the sides of the mold core. After the lower mold core is pushed out by the lifting rod, the movable support plates, under the elastic force of the compression springs, are positioned below the lower mold core, supporting the pushed-out lower mold core. After replacing the lower mold core, pulling the handles on both sides compresses the compression springs again, causing the movable support plates to move to both sides, and the lower mold core falls back into the lower mold core cavity.

[0007] Preferably, the movable support plate is provided with a through hole, and a detachable stop pin is installed in the through hole. The stop pin is inserted into the stop pin positioning hole in the lower mold plate. When the lower mold core is replaced and placed into the lower mold core cavity, the stop pin is used to fix the movable support plate on the lower mold plate, thereby facilitating the placement of the lower mold core into the lower mold plate.

[0008] Preferably, the movable support plate is also provided with a limiting oblong hole, which is located on both sides of the through hole where the stop pin is installed. Under the push of the compression spring, the limiting oblong hole limits the movement stroke of the movable support plate, ensuring smooth movement of the dragged support plate.

[0009] Preferably, the movable support plate has a groove on its end face facing the lower mold core, and the groove mates with the guide post. The groove of the movable support plate abuts against the guide post, thereby positioning the end of the movable support plate below the lower mold core and supporting the lower mold core.

[0010] Preferably, a handle hole is provided above the lower mold core, and a handle screw is installed in the handle hole. The lower mold core can be removed from the lower mold core cavity for replacement by using the handle screw.

[0011] Preferably, the lower mold core closing and fixing structure includes a nylon opener / closer fixed to a fixed plate. The fixed plate also has guide post holes and lifting rod holes. The nylon opener / closer expands during mold closing, expanding within the lower mold core hole to lock the lower mold core. The purpose of locking is that, because the lower mold core needs to be replaced quickly, it needs to be ejected from the template. If the lower mold core is not locked, the upper mold part will pull the product and the mold core out together during mold opening, causing product damage.

[0012] Preferably, the lower mold core cavity on the lower template is provided with a movable support plate receiving groove on the outer side, and the bottom surface of the movable support plate receiving groove is provided with a movable support plate positioning hole and a stop pin positioning hole.

[0013] Therefore, the quick-change mold core structure of this utility model has the following advantages: by manufacturing multiple lower mold cores for rapid replacement, multiple lower mold cores are manually inserted into the hardware inserts during injection molding on the machine. After injection molding is completed, the lower mold cores are quickly replaced to continue production, thus achieving the required production capacity in a cyclical manner. This reduces the number of molds to be developed and replicated, reduces machine and labor costs, increases product capacity, and saves overall costs. Attached Figure Description

[0014] Figure 1 This is a 3D diagram of a quick-change mold core structure for mold opening.

[0015] Figure 2 yes Figure 1 A three-dimensional drawing of the mold.

[0016] Figure 3yes Figure 1 Remove the 3D image from the lower template.

[0017] Figure 4 yes Figure 2 Remove the 3D image from the lower template.

[0018] Figure 5 This is a 3D model of the template. Detailed Implementation

[0019] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example:

[0021] like Figure 1 and 2 As shown, a quick-change mold core structure includes a lower template 1, with a lower mold core cavity 18 formed at the center of the lower template 1. The lower mold core cavity 18 is quadrilateral, and a lower mold core 2 is installed inside the lower mold core cavity 18. Movable support plate receiving grooves 19 are formed on both sides of the lower mold core cavity 18. Two movable support plate positioning holes 20 are formed on the movable support plate receiving grooves 19, and a stop pin positioning hole 17 is formed between the two movable support plate positioning holes 20 (e.g., a stop pin positioning hole 17 is formed between the two movable support plate positioning holes 20). Figure 5 (As shown).

[0022] Elastic support structures are installed on both sides of the lower mold core 2. Parallel fixing plates 12 are located below the lower mold core 2, at the bottom of the lower mold core cavity 18. Nylon opening and closing devices 14 are fixed on the fixing plates 12. Parallel guide pillars 13 and lifting rods 15 are also installed below the lower mold core 2, passing through the fixing plates 12 and connecting to the lower mold core 2. Movable support plates 6 are installed on both sides of the lower mold core 2. Handles 7 are fixed to the movable support plates 6 via two connecting rods 11. The handles 7 are located outside the lower template 1, and pads 9 are provided between the handles 7 and the outer wall of the lower template 1. Compression springs 10 are sleeved on the connecting rods 11. One end of the compression spring 10 abuts against the movable support plate 6, and the other end abuts against the pad 9. The compression spring 10 is always in a compressed state. Two limiting oblique holes 16 are provided above the movable support plate 6. A through hole for a stop pin 5 is provided between the two limiting oblique holes 16. The stop pin 5 passes through the through hole and is fixed in the stop pin positioning hole 17 on the lower template. Two bolts 8 pass through the limiting oblique holes 16 and are fixed in the movable support plate positioning hole 20 on the lower template. Under the action of the compression spring 9, the movable support plate 6 can move closer to or away from the lower mold core 2 along the direction of the limiting oblique holes 16. A groove is provided on the side of the movable support plate 6 facing the lower mold core. The groove cooperates with the guide post 13. When the lower mold core 2 is raised, the movable support plate 6 is located below the lower mold core 2 and abuts against the guide post 13 to support the lower mold core. A handle hole is provided above the lower mold core 2, and a handle screw 4 is installed in the handle hole.

[0023] When in use, the mold opening state is as follows:

[0024] The mold is opened, and the lifting rod 15 guides the lower mold core 2 out by the guide post 13. The lower mold core 2 separates from the lower template 1. The movable support plates 7 on both sides are limited by the bolts 8 on the movable support plate 6 under the action of the compression spring 10. The movable support plate 6 will automatically slide to the bottom of the lower mold core 2 to support it. After the product is removed manually, the lower mold core 2 is taken out of the mold. The lifting rod 15 is reset. The manual pulls the handles 7 on both sides to drive the movable support plate 6 to be limited by the bolts on the movable support plate. The manual inserts the stop pin 5 into the movable support plate 6. The new lower mold core 2, which has been put into the mold with the hardware insert 3, can be put into the lower template 1 as needed. This operation is repeated.

[0025] The mold closing state is as follows:

[0026] The manual inserter 3 is placed into the lower mold core 2 from outside the mold. The manual inserter holds the handle screw 4 with both hands and guides the lower mold core 2 into the lower template 1 through the guide post 13. The manual inserter pulls the stop pin 5 out from the movable support plate 6. After the mold is closed, injection molding is performed.

[0027] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A quick-change mold core structure, comprising a lower mold plate, a lower mold core cavity being arranged in the lower mold plate, and a lower mold core being arranged in the lower mold core cavity, characterized in that: The lower die core is provided with a fixed plate and a lower die core lifting structure, the fixed plate is provided with a lower die core clamping fixed structure, the lower die core lifting structure comprises a guide column and a lifting rod; both sides of the lower die core are provided with an elastic support structure; the elastic support structure comprises movable supporting plates arranged on both sides, handles are fixed on the movable supporting plates through two connecting rods, and compression springs are arranged on the connecting rods; the movable supporting plates are provided with through holes, and detachable stop inserting needles are arranged in the through holes.

2. A quick change core structure according to claim 1, wherein: The movable supporting plates are further provided with limiting waist-shaped holes, and the limiting waist-shaped holes are arranged on both sides of the through holes where the stop inserting needles are arranged.

3. The quick-change core structure according to claim 1, wherein: End faces of the movable supporting plates on the side facing the lower die core are provided with grooves, and the grooves are matched with the guide columns.

4. A quick change core structure according to any one of claims 1 to 3, characterized in that: The lower die core is provided with a handle hole, and a handle screw rod is arranged in the handle hole.

5. A quick change core structure according to any one of claims 1 to 3, characterized in that: The lower die core clamping fixed structure comprises a nylon on-off device fixed on the fixed plate, and the fixed plate is further provided with a guide column hole and a lifting rod hole.

6. The quick-change core structure according to any one of claims 1 to 3, characterized in that: The outer side of the lower die core cavity on the lower die plate is provided with a movable supporting plate accommodating groove, and the bottom surface of the movable supporting plate accommodating groove is provided with a movable supporting plate positioning hole and a stop inserting needle positioning hole.

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