Rapid forming mold for plastic ring

Abstract

The utility model relates to the technical field of plastic ring processing, in particular to a rapid forming mold for a plastic ring. The utility model provides a plastic ring rapid forming mold with an improved structure. The device comprises a base, a fixed mold, a movable mold, a supporting frame, a material ejecting part, a material collecting assembly and the like, a mold cavity used for shaping a plastic ring is formed between the fixed mold and the movable mold, and the material ejecting part is arranged between the movable mold and the supporting frame. A collecting assembly used for collecting the plastic rings is arranged in the middle of the supporting frame. The telescopic rod of the air cylinder is controlled to be shortened upwards, so that the movable mold can drive the ejector rod and the elastic piece to move upwards, and in the upward moving process of the movable mold, the ejector rod can move downwards to push out the plastic ring formed in the mold cavity downwards through the extrusion effect of the U-shaped rod on the ejector rod; the plastic rings can be conveniently collected, dumped and discharged by pulling the material collecting disc forwards, operation is easy, and then the machining procedure can be simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic ring processing, and particularly relates to a rapid prototyping mold for plastic rings. Background Technique

[0002] The rapid prototyping mold for plastic rings usually includes an upper mold and a lower mold. When the two parts are closed, a closed cavity is formed, and the shape of the cavity is exactly the same as that of the plastic ring to be formed.

[0003] A plastic mold for rapid prototyping of plastic rings is disclosed on the Chinese Patent Network, and its authorization announcement number is CN219600134U. Although the formed plastic ring can be extruded through the demolding assembly in this patent, since both the fixed mold and the moving mold are arranged horizontally, the plastic ring extruded from the moving mold directly falls onto the base and is located between the fixed mold and the moving mold. Therefore, it is not convenient to collect the demolded plastic ring, and the demolding assembly uses an active extrusion method with a cylinder and a demolding rod to demold and discharge the plastic ring, which is not convenient to simplify the processing process, and thus the processing of the plastic ring is not convenient enough.

[0004] In view of this, a rapid prototyping mold for plastic rings with an improved structure is proposed to solve the technical problems existing in the above background technique. Content of the Utility Model

[0005] In order to overcome some defects still existing in the existing molding mold during use, the technical problem to be solved is to provide a rapid prototyping mold for plastic rings with an improved structure.

[0006] The technical solution of the utility model is: a rapid prototyping mold for plastic rings, which includes a base, a fixed mold, a moving mold, an injection nozzle, a support frame and a cylinder. A fixed mold is arranged in the middle of the base, and a moving mold covers the upper part of the fixed mold. A cavity for shaping the plastic ring is opened between the fixed mold and the moving mold. An injection nozzle directly communicated with the cavity is connected to the front side of the moving mold. A support frame is connected between the left and right sides of the base, and a cylinder is installed in the middle of the upper side of the support frame, and the end of the telescopic rod of the cylinder is connected to the moving mold. It also includes a material pushing part and a material collecting assembly. A material pushing part is arranged between the moving mold and the support frame. The material pushing part includes a push rod, an elastic part and a U-shaped rod. Push rods corresponding to the cavity are slidably arranged through the moving mold at intervals. An elastic part is sleeved on the upper part of the push rod, and the upper end of the elastic part is connected to the upper part of the push rod, and the lower end of the elastic part is connected to the upper end surface of the moving mold. A U-shaped rod is connected to the inner top of the support frame, and a material collecting assembly for collecting the plastic ring is arranged in the middle of the support frame.

[0007] Further, the material receiving component includes a guiding seat, a material receiving tray, a clamping post and a guide wheel. The guiding seats are symmetrically arranged on the inner sides of the middle parts of the supporting frames. A guiding groove is formed in the guiding seat, a sliding groove is formed in the guiding groove, and the material receiving tray is movably connected to the guiding groove and the sliding groove through the clamping post and the guide wheel respectively. The clamping post is movably sleeved in the sliding groove, and the guide wheel is movably sleeved in the guiding groove.

[0008] Further, the U-shaped rod is located directly above the ejector rod.

[0009] Further, the lower end surface of the ejector rod is flush with the top end surface of the mold cavity.

[0010] Further, positioning holes are spaced apart on the upper side of the fixed mold, and positioning rods adapted to the positioning holes are spaced apart on the lower side of the movable mold. The positioning rods can be inserted into the positioning holes.

[0011] Further, a blocking portion for limiting the guide wheel is arranged at the front end of the guide groove.

[0012] The beneficial effects are as follows: By controlling the telescopic rod of the cylinder to shorten upward, the movable mold can drive the ejector rod and the elastic member to move upward. During the upward movement of the movable mold, due to the extrusion of the U-shaped rod on the ejector rod, the ejector rod can move downward to push the plastic ring formed in the mold cavity downward; By pulling the material receiving tray forward, the plastic ring can be conveniently collected and poured, and the operation is simple, which is beneficial to simplifying the processing process. Description of the Drawings

[0013] Figure 1 is a three-dimensional structural diagram of the present utility model.

[0014] Figure 2 is a front view of the present utility model.

[0015] Figure 3 is a cross-sectional view of the present utility model.

[0016] Figure 4 is a demolding state diagram of the plastic ring of the present utility model.

[0017] Figure 5 is a turnover and pouring state diagram of the material receiving tray of the present utility model.

[0018] The labels in the figure are: 1 - base, 2 - fixed mold, 20 - mold cavity, 21 - positioning hole, 3 - movable mold, 30 - positioning rod, 4 - injection nozzle, 5 - support frame, 6 - cylinder, 7 - ejector rod, 8 - elastic member, 9 - U-shaped rod, 10 - guiding seat, 11 - guiding groove, 12 - sliding groove, 13 - material receiving tray, 14 - clamping post, 15 - guide wheel, a - plastic ring. Detailed implementation mode

[0019] The following further describes the present utility model in conjunction with the embodiments shown in the attached drawings.

[0020] Embodiment: A rapid prototyping mold for a plastic ring provided by the present utility model, as shown in Figures 1 - 5 It includes a base 1, a fixed mold 2, a movable mold 3, an injection nozzle 4, a support frame 5, a cylinder 6, a ejector member and a material collection assembly. A fixed mold 2 is arranged in the middle of the base 1, and a movable mold 3 is covered on the upper part of the fixed mold 2. A mold cavity 20 for shaping the plastic ring a is formed between the inside of the fixed mold 2 and the movable mold 3. And the volume of the mold cavity 20 on the movable mold 3 is larger than the volume of the mold cavity 20 on the fixed mold 2, so that the formed plastic ring can be conveniently separated from the mold cavity 20 on the fixed mold 2. An injection nozzle 4 directly communicating with the mold cavity 20 is connected to the front side of the movable mold 3. A support frame 5 is connected between the left and right sides of the base 1. The support frame 5 is an n-shaped frame, and a cylinder 6 is installed in the middle of the upper side of the support frame 5. And the end of the telescopic rod of the cylinder 6 is connected to the movable mold 3. A ejector member is arranged between the movable mold 3 and the support frame 5. The ejector member includes a ejector rod 7, an elastic member 8 and a U-shaped rod 9. The movable mold 3 is slidably and spacedly penetrated with ejector rods 7 corresponding to the mold cavity 20. An elastic member 8 is sleeved on the upper part of the ejector rod 7. And the upper end of the elastic member 8 is connected to the upper part of the ejector rod 7, and the lower end of the elastic member 8 is connected to the upper end surface of the movable mold 3. The elastic member 8 is a compression spring, which provides an upward resetting effect on the ejector rod 7. The inner top of the support frame 5 is connected with a U-shaped rod 9, and the U-shaped rod 9 is located directly above the ejector rod 7, so that the U-shaped rod 9 can push and squeeze the ejector rod 7. A material collection assembly is arranged in the middle of the support frame 5.

[0021] Further, as shown in Figures 1 - 5 The material collection assembly includes a guide seat 10, a material collection tray 13, a clamping column 14 and a guide wheel 15. Guide seats 10 are symmetrically arranged on the left and right sides of the inner side of the middle of the support frame 5. A guide groove 11 is formed in the guide seat 10, and a sliding groove 12 is formed in the guide groove 11. And a material collection tray 13 is movably connected in the guide groove 11 and the sliding groove 12 respectively through a clamping column 14 and a guide wheel 15. Among them, the clamping column 14 is movably sleeved in the sliding groove 12, and the guide wheel 15 is movably sleeved in the guide groove 11.

[0022] Further, as shown in Figure 3 and Figure 4 The lower end surface of the ejector rod 7 is flush with the inner top surface of the mold cavity 20, which is beneficial to maintaining the smoothness and flatness of the surface of the formed plastic ring a.

[0023] Further, as shown in Figure 4As shown, positioning holes 21 are spaced apart on the upper side of the fixed mold 2, and positioning rods 30 adapted to the positioning holes 21 are spaced and arranged on the lower side of the movable mold 3. The positioning rods 30 can be inserted into the positioning holes 21. Through the docking and positioning function of the positioning rods 30 and the positioning holes 21, it is beneficial for the movable mold 3 and the fixed mold 2 to be precisely matched.

[0024] In addition, as shown in Figures 1 - 5 a partition part is provided at the front end of the guide groove 11. The guide wheel 15 can be limited by the partition part to prevent the full winding disc 13 from falling off.

[0025] During use, in the state where the movable mold 3 and the fixed mold 2 are closely attached, the plastic raw material is injected into the mold cavity 20 through the injection nozzle 4. The injected plastic raw material can be quickly shaped through the mold cavity 20 so that a plastic ring a is formed after the plastic raw material is shaped; after the plastic ring a is shaped and cooled, the control cylinder 6 is controlled to slowly retract its telescopic rod upward, and then the movable mold 3, the ejector rod 7 and the elastic member 8 can be moved upward. Since the formed plastic ring a has a certain viscosity, it is easy to adhere to the inside of the movable mold 3. When the upper end of the ejector rod 7 contacts the U-shaped rod 9, the winding disc 13 is pushed forward to be located directly below the movable mold 3. Then, through the pushing action of the U-shaped rod 9 on the ejector rod 7, the ejector rod 7 can move downward while the movable mold 3 moves upward, and then the formed plastic ring a in the movable mold 3 can be pushed out downward. In this way, the plastic ring a extruded from the mold cavity 20 can be conveniently collected through the winding disc 13. After the plastic ring a is collected on the winding disc 13, only the winding disc 13 needs to be pushed to the frontmost side so that the clamping column 14 is separated from the sliding groove 12, and then the winding disc 13 can swing downward in a flipping manner with the guide wheel 15 as the axis. In this way, it is beneficial to conveniently pour and discharge the collected plastic ring a. The operation is simple and the use is convenient; after the above operation is completed, only the winding disc 13 needs to be reset. The control cylinder 6 is controlled to extend its telescopic rod downward, and then the movable mold 3 and the components thereon can be moved downward to reset. Through the alignment function of the positioning rod 30 and the positioning hole 21, the movable mold 3 can be precisely and closely attached to the fixed mold 2. If it is necessary to continue processing the plastic ring a, only the above operation needs to be repeated.

[0026] The above are only examples of the present invention and are not used to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art of those skilled in the art.

Claims

1. A plastic ring rapid prototyping mold, comprising a base (1), a fixed mold (2), a movable mold (3), an injection nozzle (4), a support frame (5) and a cylinder (6), wherein a fixed mold (2) is arranged in the middle of the base (1), and a movable mold (3) is covered on the upper part of the fixed mold (2), a mold cavity (20) for shaping a plastic ring (a) is opened between the fixed mold (2) and the movable mold (3), and an injection nozzle (4) directly connected to the mold cavity (20) is connected to the front side of the movable mold (3), a support frame (5) is connected between the left and right sides of the base (1), a cylinder (6) is installed in the middle of the upper side of the support frame (5), and the end of the telescopic rod of the cylinder (6) is connected to the movable mold (3), characterized in that: It also includes a material ejection component and a material collection component. A material ejection component is arranged between the movable mold (3) and the support frame (5), and the material ejection component includes a ejector rod (7), an elastic component (8) and a U-shaped rod (9). The movable mold (3) is slidably and spaced apart with ejector rods (7) corresponding to the mold cavity (20). The upper part of the ejector rod (7) is sleeved with an elastic component, and the upper end of the elastic component (8) is connected to the upper part of the ejector rod (7), and the lower end of the elastic component (8) is connected to the upper end surface of the movable mold (3). The top of the support frame (5) is connected to the U-shaped rod (9), and the middle part of the support frame (5) is provided with a material collection component for collecting the plastic ring (a).

2. A plastic ring rapid prototyping mold as claimed in claim 1, characterized in that: The material receiving assembly comprises a guide seat (10), a material receiving tray (13), a clamping column (14) and a guide wheel (15); the guide seat (10) is symmetrically arranged on the inner side of the middle part of the support frame (5); a guide groove (11) is provided on the guide seat (10); a slide groove (12) is provided in the guide groove (11); and the material receiving tray (13) is movably connected in the guide groove (11) and the slide groove (12) through the clamping column (14) and the guide wheel (15), respectively; the clamping column (14) is movably sleeved in the slide groove (12), and the guide wheel (15) is movably sleeved in the guide groove (11).

3. A plastic ring rapid prototyping mold as claimed in claim 1, characterized in that: The U-shaped rod (9) is located directly above the top rod (7).

4. A plastic ring rapid prototyping mold as claimed in claim 1, characterized in that: The lower end surface of the ejector pin (7) is flush with the upper end surface inside the mold cavity (20).

5. A plastic ring rapid prototyping mold as claimed in claim 1, characterized in that: Positioning holes (21) are arranged at intervals on the upper side of the fixed mold (2), and positioning rods (30) adapted to the positioning holes (21) are arranged at intervals on the lower side of the movable mold (3), and the positioning rods (30) can be inserted into the positioning holes (21).

6. A plastic ring rapid prototyping mold as claimed in claim 2, characterized in that: A blocking portion for limiting the position of the guide wheel (15) is provided at the front end of the guide groove (11).

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