Slider assembly for injection molding mold

Abstract

To provide a slider assembly for an injection molding mold which requires less space and movement than conventional slider assemblies.SOLUTION: A slider assembly for an injection molding mold includes: a slider body; a shape insert connected to the slider body; a slider rail (5) along which a rack (6) attached to the slider body moves; and a traction element (11) that moves a pressure element (8). The pressure element (8) has teeth (9) that engage with the rack (6), and movement of the traction element (11) causes movement of the slider body via the rack (6) and pressure element (8). This makes it possible to provide the slider assembly for an injection molding mold that requires less movement and takes up less space than conventional slider assemblies.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a slider assembly for injection molds. [Background technology]

[0002] In the field of injection molding, slider assemblies are used to mold the sides of products, producing figure shapes that cannot be reproduced by traditional systems of conventional molds, because conventional molds are basically formed by a mold plate and a cavity plate, and have only a single opening action in which all workpieces are demolded in the mold opening direction.

[0003] Molds that require the production of parts with shapes that cannot be demolded using conventional procedures require the application of a mechanism called a slider, which has the role of transmitting vertical displacements to the mold opening during the opening and closing process, allowing the aforementioned negative shapes to be demolded vertically during the mold opening process and before proceeding to the demolding process of the injected product.

[0004] The slider must therefore move on guides or rails which define the path that must be traversed in each particular case to enable the target feature to be removed from the mold.

[0005] When long demolding paths, ie paths of 25 mm or more, are performed, the use of inclined guides becomes increasingly difficult, and above 35 mm their use is considered suboptimal.

[0006] The use of magnetic plates and robots to secure molds to machines is becoming more and more important, and every day more and more companies are adopting these new technologies to improve the performance of their equipment.

[0007] While the introduction of these new technologies brings economic improvements to the manufacturing process, it also creates new and unforeseen problems that must be solved.

[0008] First, although the magnetic plates mounted on the machine offer significant time savings when mounting the mold on the machine, the use of two magnetic plates per mold reduces the opening path by the thickness of each magnetic plate (one for each plate), which creates difficulties for all molds with long-stroke sliders and often forces the use of robots to be abandoned due to lack of space.

[0009] In addition to the above-mentioned drawbacks, when priority is given to using a work robot in a mold that requires a slider with a long path, the inclined guide cannot be used, and instead, pneumatic or hydraulic displacement is used, but its application involves many inconveniences and requires its application. Summary of the Invention

[0010] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a slider assembly for an injection molding mold that requires less space and has less movement than conventional slider assemblies.

[0011] The slider assembly for an injection mould according to the invention is defined in claim 1. Additional features of the slider assembly according to the invention are set out in the dependent claims.

[0012] Specifically, the slider assembly according to the present invention comprises: The slider body, a figure insert coupled to the slider body; a slider rail along which a rack attached to the slider body moves; a traction element that moves the pushing element; The pressure element has teeth that engage with the rack, and movement of the traction element causes movement of the slider body via the rack and the pressure element.

[0013] Preferably, the rack and the pressing element are perpendicular to each other.

[0014] Furthermore, preferably, the shaft passes through the pushing element and the traction element, and the pushing element and the traction element are displaceable along the shaft.

[0015] According to a preferred embodiment, the slider rail includes a slot within which the rack moves.

[0016] Additionally, the rack is preferably equipped with a hook.

[0017] According to a preferred embodiment, the traction element is a bushing.

[0018] Preferably, the slider rail comprises a hole, preferably located in a central position, through which the pressure element and the shaft move.

[0019] Since there is no need for angle machining of the inclined guides and the lateral guides and precision machining of the lateral guides is also not required, it takes up less space than other currently known models with similar features. [Brief explanation of the drawings]

[0020] To supplement the description provided and to aid in a better understanding of the features of the present invention, a set of drawings, according to an example of a preferred embodiment of the present invention, are attached as a part of said description, the following drawings being presented for illustrative and non-limiting purposes:

[0021] [Figure 1] FIG. 1 is a perspective view of a slider assembly according to the present invention in a mold closed position.

[0022] [Figure 2] FIG. 2 is a perspective view of a slider assembly according to the present invention in a mold open position.

[0023] [Figure 3] FIG. 3 is an exploded perspective view of a displacement assembly of a slider assembly according to the present invention.

[0024] [Figure 4] FIG. 4 is a perspective view of a displacement assembly of a slider assembly according to the present invention in a mold closed position.

[0025] [Figure 5] FIG. 5 is an exploded perspective view of a displacement assembly of a slider assembly according to the present invention in a mold open position. DETAILED DESCRIPTION OF THE INVENTION

[0026] The slider assembly according to the present invention, as shown in FIG. 1, comprises a slider body (1) having a figure insert (2) and movable on a base (3).

[0027] According to a representative embodiment, the slider body (1) is a parallelepiped of predetermined dimensions, and accommodates at one longitudinal end a shape insert (2) for processing the shape of the mold to be replicated, and at the opposite end has an inclined plane so that a positioning wedge (4) can oppose the injection pressure of the part to be injected.

[0028] The sliding system further comprises a slider rail (5) along which the rack (6) can slide longitudinally along the slot (7).

[0029] The movement of the rack (6) is activated by a pressure element (8) having teeth (9). The pressure element (8) is arranged laterally and is connected to the rack (6) so that when pressed from either end, it exerts angular pressure on the rack (6) and moves the rack (6) in the direction of its teeth (9). Furthermore, the rack (6) preferably comprises a drive connection (10) for moving the slider body (1).

[0030] The pressing element 8 is driven by a traction element 11, preferably a bushing, arranged around a shaft 12. The pressing element 8 and the traction element 11 are movable along the shaft 12, and the traction element 11 is attached to the injection plate of a mold (not shown).

[0031] As shown in the figure, the traction element (11) moves based on the slider rail (5) and is separated from the shaft (12) when it reaches the final position shown in Figures 2 and 5 .

[0032] The slider rail (5) has housings at each end for accommodating fixing screws (13) for attaching the slider rail (5) to the mold plate on which the system is installed. The slider rail (5) further comprises a hole (14), preferably located in a central position, through which the pressing element (8) and the shaft (12) move.

[0033] The positions shown in Figures 1 and 4 correspond to the closed position of the mould, and the positions shown in Figures 2 and 5 correspond to the open position of the mould.

[0034] As mentioned above, to move from one position to the other, the rack (6) performs a controlled sliding movement, which is the energy source used to move the slider body (1) for the purposes of this application.

[0035] To achieve the purpose of moving the slider body (1), the traction element (11) is moved, which causes the displacement of the pressure element (8), which in turn causes the rack (6) to slide via the teeth (9).

[0036] Although reference has been made to specific embodiments of the present invention, it will be obvious to those skilled in the art that the described slider assembly is susceptible to numerous variations and modifications and that all the details described may be substituted with other technically equivalents without departing from the scope of the claims as defined by the appended claims.

Claims

1. 1. A slider assembly for an injection mold, comprising: A slider body (1), a shape insert (2) connected to the slider body (1); a slider rail (5) along which a rack (6) attached to the slider body (1) moves; The slider assembly for the injection mold includes: It further comprises a traction element (11) that moves the pressure element (8), The pressure element (8) has teeth (9) that engage with the rack (6), and movement of the traction element (11) causes movement of the slider body (1) via the rack (6) and the pressure element (8).

2. 2. A slider assembly for an injection mould according to claim 1, wherein the rack (6) and the pressing element (8) are perpendicular to each other.

3. A shaft (12) passes through the pushing element (8) and the traction element (11), 3. A slider assembly for an injection mould according to claim 1 or 2, wherein the pushing element (8) and the pulling element (11) are movable along the shaft (12).

4. 4. A slider assembly for an injection mould according to claim 1, wherein the slider rail (5) includes a slot (7) within which the rack (6) moves.

5. 5. A slider assembly for an injection mould according to claim 1, wherein the rack (6) includes a hook (10).

6. 6. A slider assembly for an injection mould according to any one of claims 1 to 5, wherein the traction element (11) is a bushing.

7. 7. A slider assembly for an injection mould according to any one of claims 1 to 6, wherein the slider rail (5) comprises a hole (14) through which the pressing element (8) and the shaft (12) pass.

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