Injection molding lock cylinder part shaping mold

Abstract

This utility model discloses a shaping mold for injection-molded lock cylinder parts, relating to the field of shaping mold technology. The utility model includes an upper mold base plate, a lower mold base plate, and an injection-molded lock cylinder part body. An upper template is fixed to the bottom surface of the upper mold base plate. A lower mold height limiting plate and a lower template are sleeved on the guide pillars on the surface of the lower mold base plate, with the lower template positioned above the lower mold height limiting plate. A placement platform is fixedly installed on the lower template, and a shovel is inserted into the upper template. When the mold is closed, the upper and lower mold base plates move relative to each other, precisely aligning the upper and lower templates. As the shovel presses down with the upper mold base plate and upper template, it interacts with the slider seat via its inclined surface, driving the slider seat to move laterally. This causes the side slider insert to compress and correct the outer contour of the injection-molded lock cylinder part body. The lower mold inner support insert core moves with the lower mold height limiting plate, inserting into the lower mold inner support insert, forcing the lower mold inner support insert to expand and shaping the inner ring of the injection-molded lock cylinder part body.

Description

Technical Field

[0001] This utility model relates to the field of shaping mold technology, specifically to a shaping mold for injection-molded lock core parts. Background Technology

[0002] In the lock manufacturing industry, the lock cylinder is as shown in the attached diagram in the instruction manual. Figure 7 As a core security component, the dimensional accuracy and geometry of the lock cylinder directly determine the assembly reliability, ease of use, and resistance to technical unlocking. Currently, high-precision lock cylinders are often manufactured using metal powder injection molding (MIM) or precision injection molding processes. However, during the cooling and solidification process after injection molding, due to factors such as uneven material shrinkage, mold cavity deviation, or ejection stress, the molded lock cylinders often exhibit defects such as out-of-tolerance inner and outer diameters, roundness distortion (exhibiting elliptical deformation in non-fixed positions), and fluctuations in overall height.

[0003] The fixtures (usually simple mechanical compression molds or reducing rings) used to correct these dimensionally non-compliant lock cylinder components have significant functional limitations and inadequate effectiveness. Firstly, their function is extremely limited; they typically only perform unidirectional, overall compression correction of the lock cylinder's outer diameter, failing to simultaneously control and correct critical inner diameter dimensions (such as the pinhole distribution circle) and overall height. This results in mismatched inner and outer diameters or an unacceptable overall height after correction, ultimately rendering the product unusable during assembly and leading to a low yield rate.

[0004] Therefore, a molding die for injection molding lock core parts is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an injection molding mold for lock core parts in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: A molding die for injection-molded lock cylinders includes an upper mold base plate, a lower mold base plate, and an injection-molded lock cylinder body. An upper template is fixed to the bottom surface of the upper mold base plate. A lower mold height limiting plate and a lower template are sleeved on the guide pillars on the surface of the lower mold base plate. The lower template is above the lower mold height limiting plate. A placement platform is fixedly installed on the lower template. A shovel is inserted into the upper template and fixed to the bottom surface of the upper mold base plate by bolts. A lower mold inner support insert is fixedly installed on the lower mold base plate. The lower mold inner support insert is movably inserted into the lower mold height limiting plate. A lower mold inner support insert is provided in the placement platform. The lower mold inner support insert core is inserted into the interior of the lower mold inner support insert. A slider seat is provided on the surface of the placement platform and the lower template. A side slider insert is fixedly installed on the slider seat.

[0007] Furthermore, the lower mold inner support insert core has a conical structure, and the lower mold inner support insert has an integral structure with a four-lobed expansion portion. The lower mold inner support insert core is inserted into the lower mold inner support insert to expand it for shaping the inner ring of the injection-molded lock core body. The lower mold inner support insert is made of an elastic material.

[0008] Furthermore, the lower mold height limiting plate is made of elastic material, which is used for the lower mold inner support insert core to return downward during engagement and shaping, and the elasticity of the lower mold inner support insert is used for contraction and return.

[0009] Furthermore, a seat is slidably inserted into the groove on the top surface of the lower template, and a through hole is opened on the end face of the seat, and a spring is fixedly connected between the end face of the through hole and the placement platform.

[0010] Furthermore, both the shovel and the base are wedge-shaped structures, with the shovel located above the base. During shaping, the inclined surface of the shovel fits against the inclined surface of the base, and the shovel is used to press the base to move laterally along the groove on the top surface of the lower template, so as to simultaneously cause multiple sets of bases to shrink and press inward.

[0011] Furthermore, multiple sets of side slider inserts are bolted to the base, and the side slider inserts are stacked to shape the outer surface of the injection-molded lock core body.

[0012] The beneficial effects of this utility model are as follows: The injection-molded lock core body is placed on the placement table to ensure its stable position during the forming process. When the mold is closed, its upper mold pad and lower mold pad move relative to each other, and the upper and lower mold plates are precisely aligned. When the shovel presses down with the upper mold pad and upper mold plate, it interacts with the slider seat through its inclined surface, driving the slider seat to move laterally. This causes the side slider insert to extrude and correct the outer contour of the injection-molded lock core body. The lower mold inner support insert core moves with the lower mold height limit plate and inserts into the lower mold inner support insert, forcing the lower mold inner support insert to expand and shape the inner ring of the injection-molded lock core body. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the utility model in its unfolded state; Figure 3 This is a schematic diagram of the upper mold pad and upper template of this utility model; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the lower mold pad, lower mold height limiting plate and lower template of this utility model; Figure 6 This is an exploded view of this utility model; Figure 7 This is a schematic diagram of the injection-molded lock core body of this utility model; Reference numerals in the attached drawings: 1. Upper mold base plate; 2. Upper template plate; 3. Lower mold base plate; 4. Lower mold height limiting plate; 5. Lower template plate; 51. Placement platform; 6. Scraper; 7. Lower mold inner support insert core; 8. Lower mold inner support insert; 9. Slider seat; 901. Seat body; 902. Through hole; 903. Spring; 10. Side slider insert; 11. Injection molded lock core body. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figures 1 to 7As shown, an injection-molded lock core forming mold includes an upper mold base plate 1, a lower mold base plate 3, and an injection-molded lock core body 11. An upper template 2 is fixed on the bottom surface of the upper mold base plate 1. A lower mold height limiting plate 4 and a lower template 5 are sleeved on the guide pillars on the surface of the lower mold base plate 3. The lower template 5 is above the lower mold height limiting plate 4. A placement platform 51 is fixedly installed on the lower template 5. A shovel 6 is inserted into the upper template 2 and fixed to the bottom surface of the upper mold base plate 1 by bolts. A lower mold inner support insert core 7 is fixedly installed on the lower mold base plate 3. The lower mold inner support insert core 7 is movably inserted into the lower mold height limiting plate 4. A lower mold inner support insert 8 is provided in the placement platform 51. The lower mold inner support insert core 7 is inserted into the interior of the lower mold inner support insert 8. A slider seat 9 is provided on the surface of the placement platform 51 and the lower template 5. A side slider insert 10 is fixedly installed on the slider seat 9. like Figure 4 and Figure 6 As shown, specifically, a seat 901 is slidably inserted into the groove on the top surface of the lower template 5. A through hole 902 is opened on the end face of the seat 901, and a spring 903 is fixedly connected between the end face of the through hole 902 and the placement platform 51.

[0019] More specifically, the seat 901 slides in the groove of the lower template 5, and the spring 903 is connected between the seat 901 and the placement platform 51. When the shovel 6 drives the seat 901 to move laterally, the spring 903 is compressed to store energy; when the shovel 6 retracts, the spring 903 releases energy and pushes the seat 901 to reset.

[0020] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, both the shovel 6 and the base 901 have a wedge-shaped structure, and the shovel 6 is located above the base 901. During the shaping process, the inclined surface of the shovel 6 is in contact with the inclined surface of the base 901. The shovel 6 is used to squeeze the base 901 to move laterally along the groove on the top surface of the lower template 5, so as to simultaneously cause multiple sets of bases 901 to shrink and squeeze inward.

[0021] More specifically, the wedge-shaped inclined surfaces of the shovel 6 and the base 901 fit together when the mold is closed. The vertical movement of the shovel 6 is converted into the lateral movement of the base 901. Multiple sets of bases 901 are synchronously driven by the inclined surfaces to shrink inward along the groove of the lower template 5, which drives the side slider insert 10 to uniformly squeeze the outer surface of the lock core body 11 from all sides.

[0022] like Figure 4 , Figure 5 and Figure 6 As shown, multiple sets of side slider inserts 10 are bolted to the base 901. The side slider inserts 10 are stacked to shape the outer surface of the injection-molded lock core body 11.

[0023] More specifically, multiple sets of side slider inserts 10 are stacked and installed on the base 901. When the base 901 moves inward, the stacked side slider inserts 10 simultaneously contact the outer surface of the injection-molded lock core body 11, forming a multi-segment shaping area.

[0024] like Figure 6 As shown, the lower mold inner support insert core 7 has a conical structure, and its lower mold inner support insert 8 has an integral structure. Its expansion part has a four-lobed structure. The lower mold inner support insert core 7 is inserted into the lower mold inner support insert 8 to expand it for shaping the inner ring of the injection molded lock core body 11. The lower mold inner support insert 8 is made of elastic material.

[0025] More specifically, when the conical structure of the lower mold inner support insert core 7 is inserted into the lower mold inner support insert 8, it generates a radial component force, which forces the four-lobed expansion part of the lower mold inner support insert 8 to expand outward evenly. After the shaping is completed, the lower mold inner support insert core 7 exits the lower mold inner support insert 8 and relies on its own elastic contraction to reset, making it easy to remove the product.

[0026] In practical applications, the lower mold height limit plate 4 is made of elastic material. During the meshing and shaping process, it is used for the lower mold inner support insert core 7 to return to its downward position. The elasticity of the lower mold inner support insert 8 is used for shrinkage and return.

[0027] More specifically, the lower mold height limiting plate 4 is made of elastic material. When subjected to pressure during the mold closing process, it undergoes elastic compression, allowing the lower mold plate 5 to move downwards. This enables the lower mold inner support insert core 7 to move upwards relative to the lower mold plate 5. When the upper mold is lifted, the elastic restoring force of the lower mold height limiting plate 4 pushes the lower mold inner support insert core 7 to reset. At the same time, the elasticity of the lower mold inner support insert 8 causes it to automatically contract and detach from the inner wall of the injection molded locking core body 11.

[0028] In summary: The injection-molded lock core body 11 is placed on the placement table 51 to ensure its stable position during the forming process. When the mold is closed, the upper mold pad 1 and the lower mold pad 3 move relative to each other, and the upper template 2 and the lower template 5 are precisely aligned. When the shovel 6 presses down with the upper mold pad 1 and the upper template 2, it interacts with the slider seat 9 through its inclined surface, driving the slider seat 9 to move laterally. This causes the side slider insert 10 to extrude and correct the outer contour of the injection-molded lock core body 11. The lower mold inner support insert core 7 moves with the lower mold height limit plate 4 and is inserted into the lower mold inner support insert 8, forcing the lower mold inner support insert 8 to expand and forming the inner ring of the injection-molded lock core body 11.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A molding die for injection-molded lock core parts, characterized in that, The system includes an upper mold base plate (1), a lower mold base plate (3), and an injection-molded lock core body (11). An upper template (2) is fixed to the bottom surface of the upper mold base plate (1). A lower mold height limiting plate (4) and a lower template (5) are fitted onto the guide pillars on the surface of the lower mold base plate (3). The lower template (5) is located above the lower mold height limiting plate (4). A placement platform (51) is fixedly installed on the lower template (5). A shovel (6) is inserted into the upper template (2) and fixed to the upper mold base plate (1) by bolts. On the bottom surface, a lower mold inner support insert core (7) is fixedly installed on the lower mold pad plate (3). The lower mold inner support insert core (7) is movably inserted into the lower mold height limiting plate (4). A lower mold inner support insert (8) is provided in the placement platform (51). The lower mold inner support insert core (7) is inserted into the interior of the lower mold inner support insert (8). A slider seat (9) is provided on the surface of the placement platform (51) and the lower template (5). A side slider insert (10) is fixedly installed on the slider seat (9).

2. The injection molding mold for a lock core as described in claim 1, characterized in that, The lower mold inner support insert core (7) has a conical structure, and the lower mold inner support insert (8) has an integral structure. Its expansion part has a four-lobed structure. The lower mold inner support insert core (7) is inserted into the lower mold inner support insert (8) to expand it for shaping the inner ring of the injection-molded lock core body (11). The lower mold inner support insert (8) is made of elastic material.

3. The injection molding mold for a lock core as described in claim 2, characterized in that, The lower mold height limiting plate (4) is made of elastic material. During the meshing and shaping process, it is used to reset the lower mold inner support insert core (7) downwards, and the elasticity of the lower mold inner support insert (8) is used for shrinkage and reset.

4. The injection molding mold for a lock core as described in claim 1, characterized in that, A seat (901) is slidably inserted into the groove on the top surface of the lower template (5). A through hole (902) is opened on the end face of the seat (901), and a spring (903) is fixedly connected between the end face of the through hole (902) and the placement platform (51).

5. The injection molding mold for a lock core as described in claim 4, characterized in that, Both the shovel (6) and the seat (901) are wedge-shaped structures, and the shovel (6) is located above the seat (901). During the shaping process, the inclined surface of the shovel (6) is in contact with the inclined surface of the seat (901). The shovel (6) is used to squeeze the seat (901) to move laterally along the groove on the top surface of the lower template (5) so as to simultaneously cause multiple sets of seats (901) to shrink and squeeze inward.

6. The injection molding mold for a lock core as described in claim 5, characterized in that, Multiple sets of side slider inserts (10) are bolted to the base (901), and the side slider inserts (10) are stacked to shape the outer surface of the injection-molded lock core body (11).

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