A spliced plastic mold

Abstract

The utility model relates to the technical field of plastic mould, and disclose a spliced plastic mould, including upper mould and with upper mould's lower mould, still include symmetrical opening on the upper mould and the stepped groove on lower mould, two groups of stepped groove all detachable installation are used for the cavity plate of forming in, two groups of stepped groove all are provided with locking portion for limiting cavity plate, the utility model discloses the stepped groove is set up on the upper mould and lower mould, and the cavity plate is detachably installed in the stepped groove, when the cavity wears, scratch or need to produce different specifications products, only need to replace cavity plate alone, do not need to replace whole upper mould or lower mould, effectively solved the problem that integral type cavity mould material waste is serious, and the replacement period is long, greatly reduce material loss, shorten the downtime, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, specifically to a splicing plastic mold. Background Technology

[0002] Plastic molds, as the core equipment for molding plastic products, are widely used in many fields such as electronics, automobiles, home appliances, and medical devices. The quality, production efficiency, and cost control of plastic products are directly related to the performance of plastic molds. With the continuous growth of market demand for plastic products, the requirements for the processing convenience, maintenance economy, and adaptability of plastic molds are also increasing.

[0003] Plastic molds are tools used to manufacture plastic products. They are usually made of metal and can produce plastic products of various shapes and sizes. The production of plastic molds requires designers to design the structure of the mold according to the requirements of the product. Then, the mold is manufactured through processing. During the production process, plastic granules are heated and melted and poured into the mold. After cooling and solidification, the mold is removed, and the plastic product is finally obtained.

[0004] In existing technologies, for integral cavity molds, the cavity and template are not separable. When the cavity is worn, scratched, or when different specifications of products need to be produced, the entire fixed template or moving template needs to be replaced. This not only results in serious material waste but also a long replacement cycle, significantly increasing production costs and downtime. Although modular cavity molds can replace cavities by replacing modules, the fixation of detachable cavities may become loose, leading to plastic overflow during injection molding. Furthermore, some detachable parting cavities require the removal of multiple fasteners during disassembly, resulting in low maintenance efficiency. Repeated disassembly can easily cause wear on the template connection holes, reducing the mold's service life. Therefore, we urgently need a splicing plastic mold to solve the above problems. Utility Model Content

[0005] This utility model provides a modular plastic mold. By symmetrically opening stepped grooves in the upper and lower molds and detachably installing the cavity plate, it solves the problems in the background art of integral cavity molds, which suffer from cavity wear, material waste, and long replacement cycles due to the need to replace the entire template when changing specifications, because the cavity and template cannot be separated. The locking part solves the problems in the background art of modular molds, such as easy loosening of the detachable cavity, easy overflow of injection plastic, need for repeated disassembly and wear of template connection holes, and reduced mold life.

[0006] This utility model provides the following technical solution: A modular plastic mold includes an upper mold and a lower mold adapted to the upper mold, and also includes stepped grooves symmetrically opened on the upper mold and the lower mold. Each of the two sets of stepped grooves has a cavity plate for molding installed in it, and each of the two sets of stepped grooves is provided with a locking part for limiting the cavity plate.

[0007] As a preferred technical solution of this utility model, the locking part includes a limiting plate that slides symmetrically on both sides of the stepped groove. The limiting plate has protrusions arranged in a linear array. The cavity plate has symmetrical insertion grooves that are adapted to the protrusions. When the protrusions on the limiting plate are inserted into the insertion grooves, a pressing area is formed.

[0008] As a preferred technical solution of this utility model, the upper mold and the lower mold are symmetrically provided with sliding holes, and the connection of the limiting plate slides in the sliding holes. The upper mold and the lower mold are provided with rectangular grooves that communicate with the sliding holes. The inner wall of the rectangular groove is threaded with a screw for driving the limiting plate to move, and the connection of the limiting plate is threaded with the screw.

[0009] As a preferred technical solution of this utility model, the bottom walls of the upper mold and the lower mold are symmetrically provided with sliding grooves, the bottom of the limiting plate is slidably connected in the sliding groove, a spring is provided in the sliding groove, and the two ends of the spring are respectively connected to the limiting plate and the inner wall of the sliding groove.

[0010] As a preferred technical solution of this utility model, at least two sets of limiting rods are symmetrically provided on the bottom wall of the stepped groove, and a limiting groove matching the limiting rods is provided on the bottom wall of the cavity plate. When the cavity plate abuts against the inner wall of the stepped groove, the limiting rod is inserted into the limiting groove and forms a limiting area.

[0011] As a preferred technical solution of this utility model, both the upper mold and the lower mold are symmetrically provided with threaded holes for locking, and the cavity plate is provided with threaded holes matching the threaded holes. When the threaded holes are coaxial, they are locked by bolts.

[0012] Compared with the prior art, this utility model provides a splicing plastic mold, which has the following beneficial effects: 1. In this modular plastic mold, stepped grooves are opened on the upper and lower molds, and the cavity plate can be detachably installed in the stepped grooves. When the cavity is worn, scratched, or when different specifications of products need to be produced, only the cavity plate needs to be replaced. There is no need to replace the entire upper or lower mold. This effectively solves the problems of serious material waste and long replacement cycle of integral cavity molds, greatly reduces material loss, shortens downtime, and reduces production costs.

[0013] 2. In this modular plastic mold, the symmetrically arranged limiting plates are moved by a screw, so that the polygonal protrusions on the limiting plates cooperate with the insertion grooves of the cavity plate to form a tight-fitting area. Combined with the preload of the spring in the slide groove, the positioning cooperation between the polygonal limiting rod on the bottom wall of the stepped groove and the limiting groove of the cavity plate, and the double locking structure of the bolt and bolt hole one and threaded hole two, the problem of easy loosening of the modular cavity mold and overflow of injection plastic is solved. Furthermore, the screw drive replaces the traditional multi-fastener connection, which improves maintenance efficiency, avoids wear of the template connection holes caused by repeated disassembly, and extends the service life of the mold.

[0014] The parts not covered in this device are the same as or can be implemented using existing technologies. This utility model effectively solves the problems of serious material waste and long replacement cycle of integral cavity molds, greatly reduces material loss, shortens downtime, reduces production costs, solves the problems of easy loosening of modular cavity molds and plastic overflow, and improves processing accuracy. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of a partial structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 3 ; Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 4 ; Figure 6 This is a partial cross-sectional view of the present invention.

[0017] In the diagram: 1. Upper mold; 2. Lower mold; 3. Stepped groove; 4. Cavity plate; 5. Limiting plate; 6. Protrusion; 7. Insertion groove; 8. Sliding hole; 9. Rectangular groove; 10. Screw; 11. Slide groove; 12. Spring; 13. Limiting rod; 14. Limiting groove; 15. Threaded hole one; 16. Threaded hole two. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Reference Figures 1-6 A type of interlocking plastic mold includes an upper mold 1 and a lower mold 2 adapted to the upper mold 1, and also includes stepped grooves 3 symmetrically opened on the upper mold 1 and the lower mold 2, with a cavity plate 4 for molding being disassembled and installed in each of the two sets of stepped grooves 3.

[0020] Here, the upper mold 1 has an injection port, and the cavity plate 4 is provided with an exhaust hole, which is not shown in the figure. The upper mold 1 and the lower mold 2 are both existing technical solutions, and are directly referenced in this embodiment, so they will not be described in detail here.

[0021] Furthermore, the upper mold 1 and the lower mold 2 serve as the basic framework of the mold. They adapt to each other to form a closed space for injection molding, providing stable support for the subsequent installation of the cavity plate 4 and the injection molding process.

[0022] In this embodiment, the stepped groove 3 has a stepped structure, which plays a precise positioning and bearing role for the cavity plate 4. When the cavity plate 4 is placed in the stepped groove 3, the stepped surface can initially limit the circumferential and vertical movement of the cavity plate 4, preventing the cavity plate 4 from shifting laterally or shaking vertically during installation and injection molding. When the cavity is worn or scratched, affecting the product quality, or when it is necessary to produce products of different specifications, it is only necessary to disassemble and replace the cavity plate 4 separately, without replacing the entire upper mold 1 or lower mold 2, which further improves the efficiency of mold use.

[0023] Both sets of stepped grooves 3 are equipped with locking parts for limiting the cavity plates 4. The locking parts include limiting plates 5 that slide symmetrically on both sides of the stepped groove 3. The limiting plates 5 have protrusions 6 arranged in a linear array. The cavity plates 4 are symmetrically provided with insertion grooves 7 that are adapted to the protrusions 6. When the protrusions 6 on the limiting plates 5 are inserted into the insertion grooves 7, a pressing area is formed. The upper mold 1 and the lower mold 2 are both symmetrically provided with sliding holes 8, and the connection of the limiting plates 5 slides in the sliding holes 8. Both the upper mold 1 and the lower mold 2 have rectangular grooves 9 that communicate with the sliding hole 8. The inner wall of the rectangular groove 9 is threaded with a screw 10 for driving the movement of the limiting plate 5. The connection of the limiting plate 5 is threaded with the screw 10. The bottom walls of the upper mold 1 and the lower mold 2 are symmetrically provided with sliding grooves 11. The bottom of the limiting plate 5 is slidably connected in the sliding groove 11. A spring 12 is provided in the sliding groove 11, and the two ends of the spring 12 are respectively connected to the limiting plate 5 and the inner wall of the sliding groove 11.

[0024] In this embodiment, the limiting plate 5 adopts a symmetrical sliding design, which can move synchronously along both sides of the stepped groove 3 to apply uniform locking force to both sides of the cavity plate 4, avoiding the cavity plate 4 from shifting or deforming due to force on one side. The symmetrical design makes the cavity plate 4 subject to balanced force, effectively improving the stability of locking and reducing the risk of the cavity plate 4 loosening during injection molding.

[0025] Furthermore, the protrusion 6 adopts a polygonal shape, such as a regular hexagon or a square. The polygonal structure and the inner wall of the insertion groove 7 can achieve a tight fit between their surfaces, effectively preventing relative rotation between the cavity plate 4 and the limiting plate 5 after locking. At the same time, the damping layer covering the surface of the protrusion 6, such as rubber or silicone, can increase the friction between the protrusion 6 and the insertion groove 7, further enhancing the locking force and preventing them from separating under the injection pressure. Moreover, the damping layer has a certain degree of elasticity, which can buffer the vibration generated during the injection process and reduce the rigid wear of the protrusion 6 and the insertion groove 7. When the protrusion 6 is inserted into the insertion groove 7 to form a tight abutment area, the cavity plate 4 can be stably fixed laterally, providing a stable molding environment for the injection process.

[0026] Furthermore, the sliding hole 8 provides precise guidance for the movement of the limiting plate 5. The connection of the limiting plate 5 slides into the sliding hole 8, ensuring that the limiting plate 5 can only move along the axial direction of the sliding hole 8, avoiding skewing or jamming of the limiting plate 5 during movement, and ensuring that the protrusion 6 can be accurately aligned with the insertion groove 7, improving the convenience and accuracy of the locking operation; when the screw 10 is rotated, the threaded engagement drives the limiting plate 5 to move along the sliding hole 8, realizing the engagement and separation of the protrusion 6 and the insertion groove 7.

[0027] In this embodiment, the slide groove 11 is slidably connected to the bottom of the limiting plate 5, forming an auxiliary guide from the bottom of the limiting plate 5. Together with the sliding hole 8, it guides the upper part of the limiting plate 5, further improving its movement stability and straightness, preventing the limiting plate 5 from bending or deviating when subjected to force, and ensuring the stable transmission of locking force. The spring 12 is in a compressed state in the slide groove 11, and its two ends are respectively connected to the limiting plate 5 and the inner wall of the slide groove 11, providing continuous preload force for the limiting plate 5. When the screw 10 drives the limiting plate 5 to lock the cavity plate 4, the preload force of the spring 12 can make the protrusion 6 fit tightly with the insertion groove 7.

[0028] At least two sets of limiting rods 13 are symmetrically provided on the bottom wall of the stepped groove 3, and a limiting groove 14 matching the limiting rods 13 is provided on the bottom wall of the cavity plate 4. When the cavity plate 4 abuts against the inner wall of the stepped groove 3, the limiting rods 13 are inserted into the limiting groove 14 and form a limiting area.

[0029] In this embodiment, the limiting rod 13 enables precise positioning of the cavity plate 4. When installing the cavity plate 4, the limiting groove 14 of the cavity plate 4 is aligned with the limiting rod 13 on the bottom wall of the stepped groove 3 and inserted, quickly completing the initial positioning of the cavity plate 4 and ensuring accurate installation within the stepped groove 3. The limiting rod 13, with its polygonal design, works in conjunction with the limiting groove 14 to prevent rotation of the cavity plate 4 after initial positioning. The damping layer covering its surface increases the friction between the limiting rod 13 and the limiting groove 14, preventing the cavity plate 4 from slipping during installation. It also buffers vibrations during injection molding, reducing rigid collision wear between the cavity plate 4 and the limiting rod 13, thus improving the reliability and service life of the positioning structure.

[0030] Both the upper mold 1 and the lower mold 2 are symmetrically provided with threaded holes 15 for locking. The cavity plate 4 is provided with threaded holes 16 that match the threaded holes 15. When the threaded holes 15 and 16 are coaxial, they are locked by bolts.

[0031] In this embodiment, after the cavity plate 4 is initially locked by the locking part, the threaded hole 15 and the threaded hole 16 are coaxial and connected by bolts, which can further enhance the connection strength between the cavity plate 4 and the upper mold 1 and the lower mold 2.

[0032] In this utility model, when installing the cavity plate 4, the cavity plate 4 is placed in the stepped groove 3, and the limiting rod 13 is inserted into the limiting groove 14 to achieve initial positioning. Then, the screw 10 is rotated to drive the limiting plate 5 to slide in the sliding hole 8 and the sliding groove 11, so that the protrusion 6 on the limiting plate 5 is inserted into the insertion groove 7 of the cavity plate 4 to form a pressing area. At the same time, the spring 12 is compressed to generate a pre-tightening force to fix the cavity plate 4. When the threaded hole 16 on the cavity plate 4 is coaxial with the threaded hole 15 on the corresponding mold, it is locked with bolts to complete the installation of the cavity plate 4. When disassembling the cavity plate 4, first unscrew the bolts, then rotate the screw 10 in the opposite direction. The limiting plate 5 will be reset under the elastic force of the spring 12, and the protrusion 6 will exit from the insertion groove 7. Then the cavity plate 4 can be taken out from the stepped groove 3.

[0033] Components not described in detail in this article are existing technologies.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A modular plastic mold, comprising an upper mold (1) and a lower mold (2) adapted to the upper mold (1), characterized in that, It also includes stepped grooves (3) symmetrically opened on the upper mold (1) and the lower mold (2). Both sets of stepped grooves (3) are equipped with molded cavity plates (4) for molding. Both sets of stepped grooves (3) are provided with locking parts for limiting the molded cavity plates (4).

2. The splicing plastic mold according to claim 1, characterized in that, The locking part includes a limiting plate (5) that slides symmetrically on both sides of the stepped groove (3). The limiting plate (5) has protrusions (6) arranged in a linear array. The cavity plate (4) has symmetrical insertion grooves (7) that are adapted to the protrusions (6). When the protrusions (6) on the limiting plate (5) are inserted into the insertion grooves (7), a pressing area is formed.

3. The splicing plastic mold according to claim 2, characterized in that, The upper mold (1) and the lower mold (2) are symmetrically provided with sliding holes (8), and the connection of the limiting plate (5) slides in the sliding hole (8). The upper mold (1) and the lower mold (2) are provided with rectangular grooves (9) that communicate with the sliding holes (8). The inner wall of the rectangular groove (9) is threaded with a screw (10) for driving the limiting plate (5) to move. The connection of the limiting plate (5) is threaded with the screw (10).

4. The splicing plastic mold according to claim 3, characterized in that, The bottom walls of the upper mold (1) and the lower mold (2) are symmetrically provided with sliding grooves (11). The bottom of the limiting plate (5) is slidably connected in the sliding groove (11). A spring (12) is provided in the sliding groove (11), and the two ends of the spring (12) are respectively connected to the inner wall of the limiting plate (5) and the sliding groove (11).

5. The splicing plastic mold according to claim 1, characterized in that, At least two sets of limiting rods (13) are symmetrically provided on the bottom wall of the stepped groove (3), and the bottom wall of the cavity plate (4) is provided with a limiting groove (14) that matches the limiting rod (13). When the cavity plate (4) abuts against the inner wall of the stepped groove (3), the limiting rod (13) is inserted into the limiting groove (14) and forms a limiting area.

6. The splicing plastic mold according to claim 1, characterized in that, Both the upper mold (1) and the lower mold (2) are symmetrically provided with threaded holes 1 (15) for locking. The cavity plate (4) is provided with threaded holes 2 (16) that match threaded holes 1 (15). When threaded holes 1 (15) and threaded holes 2 (16) are coaxial, they are locked by bolts.

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