Plastic part production mold facilitating mold release

Abstract

This utility model discloses a plastic part production mold that facilitates mold separation, including a hydraulic cylinder, an upper mold, a lower mold, a transmission mold-removing mechanism, and a mold-pushing mechanism. The transmission end of the hydraulic cylinder is connected to the upper mold, and the lower mold is fixed to the worktable. The transmission mold-removing mechanism includes a connecting frame, a screw body, a spiral sleeve, a transmission gear, a transmission rack, and a displacement plate. The connecting frame is fixed to the right end of the upper mold and connected to the screw body. The screw body is threadedly engaged with the spiral sleeve. A transmission gear is fixedly installed on the outer wall of the spiral sleeve, and the transmission gear meshes with the transmission rack on the displacement plate. The mold-pushing mechanism includes a connecting plate and a push rod body. The connecting plate is fixed to the middle of the displacement plate and connected to the push rod body. This plastic part production mold that facilitates mold separation adds a transmission mold-removing mechanism and a mold-pushing mechanism. The coordinated design of the transmission mold-removing mechanism and the mold-pushing mechanism achieves a triple technological breakthrough in hydraulic power reuse, precise motion conversion, and product demolding. Compared with traditional molds, it significantly reduces energy consumption and improves demolding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts molds, specifically a plastic parts production mold that facilitates mold separation. Background Technology

[0002] Plastic molds are precision tools used for the mass production of plastic products. They are formed by injecting molten plastic at high temperatures into the mold cavity. The core of the mold consists of a cavity (concave mold) and a core (punch mold), and is usually made of steel or aluminum alloy. It includes a gating system, a cooling system, and an ejection structure. The workflow includes six stages: mold closing, injection, pressure holding, cooling, mold opening, and demolding. They are widely used in the automotive, electronics, and home appliance industries. Their precision and surface treatment (polishing / texturing) directly determine the dimensional stability and appearance quality of the product. They are the core equipment for modern injection molding industry to achieve efficient, low-cost, and large-scale production.

[0003] Based on existing plastic part production molds, it has been found that during the production process, existing plastic part molds have high demolding resistance, requiring the addition of auxiliary demolding mechanisms such as sliders, inclined ejectors, and air ejectors, or relying on manual prying, knocking, and other intervention operations to complete demolding. This not only increases the mold manufacturing cost and maintenance difficulty, but also easily leads to quality risks such as product deformation and tearing, and reduces production efficiency. Based on this, this utility model designs a plastic part production mold that is easy to separate, in order to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a plastic part production mold that facilitates mold separation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A plastic part production mold that facilitates mold separation includes a hydraulic cylinder, an upper mold, a lower mold, a transmission mold-removing mechanism, and a mold-pushing mechanism. The transmission end of the hydraulic cylinder is connected to the upper mold, and the lower mold is fixed to a worktable. The transmission mold-removing mechanism includes a connecting frame, a screw body, a spiral sleeve, a transmission gear, a transmission rack, and a displacement plate. The connecting frame is fixed to the right end of the upper mold and connected to the screw body. The screw body is threadedly engaged with the spiral sleeve. A transmission gear is fixedly installed on the outer wall of the spiral sleeve, and the transmission gear meshes with the transmission rack on the displacement plate. The mold-pushing mechanism includes a connecting plate and a push rod body. The connecting plate is fixed to the middle of the displacement plate and connected to the push rod body.

[0006] Optionally, a limiting sleeve is provided at the connection between the screw body and the spiral sleeve, and a thrust bearing is installed between the two.

[0007] Optionally, a support frame is connected to the right end of the limiting sleeve, and a support seat is fixedly installed on the left end of the support frame. The support seat is installed on the right end of the lower mold.

[0008] Optionally, the support base is provided with a limiting slide rail, and the left end of the displacement plate is provided with a limiting slide sleeve, the limiting slide sleeve and the limiting slide rail being slidably engaged.

[0009] Optionally, the movement trajectory of the push rod is parallel to the upper surface of the lower mold.

[0010] Optionally, the rotation axis of the transmission gear is perpendicular to the axis of the screw body.

[0011] Optionally, the reciprocating motion direction of the displacement plate is perpendicular to the motion direction of the hydraulic cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention includes a transmission-driven mold-taking mechanism and a mold-pushing mechanism. The vertical motion of the hydraulic cylinder is converted into a horizontal pushing force through the precision thread transmission between the screw body and the spiral sleeve. A thrust bearing reduces friction loss, and the meshing of the transmission gear and rack achieves power conversion. The displacement plate, through the cooperation of the limiting sleeve and the limiting rail, ensures stable linear movement of the push rod body. The rigid connection of the connecting plate ensures uniform distribution of the pushing force, achieving a stable removal of the plastic part. Attached Figure Description

[0013] Figure 1 This is a three-dimensional front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view. Figure 3 This is a three-dimensional top view of the structure of this utility model; Figure 4 This is a three-dimensional left-side view structural schematic diagram of the present invention; Figure 5 This is a three-dimensional right-view structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the structure of this utility model from a right-side plan view; Figure 7 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ; Figure 8 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ; Figure 9 This utility model Figure 7 A magnified three-dimensional structural diagram of point A in the middle.

[0014] In the diagram: 1. Hydraulic cylinder; 2. Upper mold; 3. Lower mold; 4. Transmission mold removal mechanism; 401. Connecting frame; 402. Screw body; 403. Spiral sleeve; 404. Transmission gear; 405. Thrust bearing; 406. Transmission rack; 407. Displacement plate; 408. Limiting sleeve; 409. Support frame; 410. Limiting sliding sleeve; 411. Support base; 412. Limiting slide rail; 5. Mold pushing mechanism; 501. Connecting plate; 502. Push rod body. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] 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.

[0018] Please see Figures 1-9In this embodiment of the present invention, a plastic part production mold that facilitates mold separation includes a hydraulic cylinder 1, an upper mold 2, a lower mold 3, a transmission mold-removing mechanism 4, and a mold-pushing mechanism 5. The transmission end of the hydraulic cylinder 1 is connected to the upper mold 2, and the lower mold 3 is fixed to the worktable. The transmission mold-removing mechanism 4 includes a connecting frame 401, a screw body 402, a spiral sleeve 403, a transmission gear 404, a transmission rack 406, and a displacement plate 407. The connecting frame 401 is fixed to the right end of the upper mold 2 and connected to the screw body 402. The screw body 402 is threadedly engaged with the spiral sleeve 403. The transmission gear 404 is fixedly installed on the outer wall of the spiral sleeve 403, and the transmission gear 404 meshes with the transmission rack 406 on the displacement plate 407. The mold-pushing mechanism 5 includes a connecting plate 501 and a push rod body 502. The connecting plate 501 is fixed to the middle of the displacement plate 407 and connected to the push rod body 502. The piston rod end of the hydraulic cylinder 1 is connected to the top of the upper mold 2 via a flange, and the lower mold 3 is fixed to the worktable surface by positioning bolts. The connecting frame 401 of the transmission mold-taking mechanism 4 is welded to the right side of the upper mold 2, and its extension is fitted with a screw body 402, which forms a threaded pair with the screw sleeve 403. The outer circumference of the screw sleeve 403 is integrally formed with a transmission gear 404, which meshes with the transmission rack 406 on the displacement plate 407. The support base 411 is fixed to the right side of the lower mold 3 by bolts, and the limiting slide rail 412 installed on its upper part slides in engagement with the limiting slide sleeve 410 at the left end of the displacement plate 407.

[0019] The connecting plate 501 of the ejector mechanism 5 is fixed at the through hole in the middle of the displacement plate 407, and the ejector body 502 is fixedly installed on its outer wall. When the hydraulic cylinder 1 drives the upper mold 2 to move downward and close the mold, the screw body 402 is screwed into the spiral sleeve 403 and rotates. Through gear and rack transmission, the displacement plate 407 drives the ejector body 502 to move outward to avoid the cavity. When the mold opens, the hydraulic cylinder 1 returns and pulls the screw body 402 to reverse, and the ejector body 502 ejects the product parallel to the parting surface of the lower mold 3. The limit sleeve 408 and the support frame 409 form an axial positioning system, and the thrust bearing 405 ensures that the spiral sleeve 403 rotates smoothly. The working principle of this utility model is as follows: This plastic part production mold that facilitates mold separation is driven by a hydraulic cylinder 1 to press down the upper mold 2 and close with the lower mold 3 fixed on the worktable. During the mold closing process, the upper mold 2 drives the connecting frame 401 and the screw body 402 to move down synchronously. The screw body 402 drives the transmission gear 404 to rotate through the threaded engagement with the screw sleeve 403. The transmission gear 404 meshes with the transmission rack 406 on the displacement plate 407, causing the displacement plate 407 to drive the connecting plate 501 and the push rod body 502. The mold moves outward to avoid the molding cavity; during demolding, the hydraulic cylinder 1 lifts the upper mold 2, the screw body 402 rotates in the opposite direction to drive the transmission gear 404 to reverse, and drives the displacement plate 407 to move towards the center of the mold through the transmission rack 406. At this time, the limiting sleeve 410 is precisely guided along the limiting slide rail 412 on the support base 411, so that the push rod body 502 moves parallel to the surface of the lower mold 3 to eject the product. The thrust bearing 405 ensures that the spiral sleeve 403 rotates smoothly. The limiting sleeve 408 and the support frame 409 form a stable support system.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic part production mold that facilitates mold separation, comprising a hydraulic cylinder (1), an upper mold (2), a lower mold (3), a transmission mold-removing mechanism (4), and a mold-pushing mechanism (5), characterized in that: The hydraulic cylinder (1) is connected to the upper mold (2) at the transmission end, and the lower mold (3) is fixed to the workbench; the transmission mold taking mechanism (4) includes a connecting frame (401), a screw body (402), a spiral sleeve (403), a transmission gear (404), a transmission rack (406), and a displacement plate (407). The connecting frame (401) is fixed to the right end of the upper mold (2) and connected to the screw body (402). The screw body (402) is threadedly engaged with the spiral sleeve (403). The transmission gear (404) is fixedly installed on the outer wall of the spiral sleeve (403). The transmission gear (404) meshes with the transmission rack (406) on the displacement plate (407); the mold pushing mechanism (5) includes a connecting plate (501) and a push rod body (502). The connecting plate (501) is fixed to the middle of the displacement plate (407) and connected to the push rod body (502).

2. The plastic part production mold facilitating mold split of claim 1, wherein: A limiting sleeve (408) is provided at the connection between the screw body (402) and the screw sleeve (403), and a thrust bearing (405) is installed between the two.

3. A plastic part production mold facilitating mold opening according to claim 2, characterized in that: The right end of the limiting sleeve (408) is connected to a support frame (409), and the left end of the support frame (409) is fixedly installed with a support seat (411), which is installed on the right end of the lower mold (3).

4. The plastic part production mold facilitating mold opening of claim 3, wherein: The support base (411) is provided with a limiting slide rail (412), and the left end of the displacement plate (407) is provided with a limiting slide sleeve (410). The limiting slide sleeve (410) and the limiting slide rail (412) are in sliding cooperation.

5. The plastic part production mold facilitating mold split of claim 1, wherein: The trajectory of the push rod (502) is parallel to the upper surface of the lower mold (3).

6. The plastic part production mold facilitating mold split of claim 1, wherein: The axis of rotation of the transmission gear (404) is perpendicular to the axis of the screw body (402).

7. The plastic part production mold facilitating mold split of claim 1, wherein: The reciprocating motion direction of the displacement plate (407) is perpendicular to the motion direction of the hydraulic cylinder (1).

Images