In-mold flash trim mold

Abstract

The utility model belongs to mould technical field, concretely relates to a kind of in-mould material leakage trimming die, including master mould, master mould is fixed with mould core, and the top surface of mould core is set out from the top surface of master mould, and the thimble hole of being set along the length direction of mould core is penetrated in the top surface of mould core;Mould core is equipped with material leakage pipe, and the inner diameter of material leakage pipe is greater than the diameter of the intermediate circular hole in the workpiece to be processed;Thimble hole is movably equipped with thimble;Master mould lower side is equipped with the rear mould of being fixedly connected with master mould, and the rear mould middle is equipped with the cavity coaxial with first movable cavity, and rear mould lateral wall is provided with discharge port;Rear mould is equipped with movable rod that is slidably arranged relative to rear mould, and movable rod is located below material leakage pipe, and the end of movable rod that is contacted with material leakage pipe is equipped with matching hole, and movable rod lateral wall is equipped with discharge port that is penetrated with matching hole, and discharge port is penetrated with discharge port and is set. Through the setting of the above components, the through-hole, trimming processing procedure of part are realized simultaneously, and the demoulding of part and waste material is also realized.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to an in-mold material leakage and edge trimming mold. Background Technology

[0002] In the field of mechanical manufacturing, the processing of polygonal parts with through holes typically requires multiple steps, including drilling, trimming, demolding, and waste removal. (See attached image) Figure 5 The workpiece 70 needs to be trimmed and perforated to form the finished part 80. In traditional processing, drilling and trimming are often done in steps at different machine stations. When there are not enough machine stations during production, it is difficult to complete trimming and waste removal processes simultaneously at the same station, requiring two machining operations. This secondary machining not only increases additional processing costs, including equipment usage costs and labor costs, but also extends product delivery time, impacting production efficiency and the company's market competitiveness.

[0003] Furthermore, in traditional machining mold structures, the waste material generated after trimming is easily trapped on the mold protrusion and difficult to remove smoothly. At the same time, product demolding and waste removal often require additional operations or auxiliary structures, further increasing the complexity and cost of machining. It is also difficult to ensure the continuity and stability of machining, and it is impossible to efficiently achieve high-quality machining of through-hole parts. Utility Model Content

[0004] The purpose of this utility model is to provide an in-mold material leakage and edge trimming mold, which aims to solve the technical problems of high machining cost, insufficient processing continuity and stability of existing molds.

[0005] To achieve the above objectives, this utility model provides an in-mold material discharge and trimming mold, comprising a main mold with a through hole in the middle, a mold core fixedly disposed in the main mold, a coaxially disposed tube hole in the middle of the mold core, the top surface of the mold core protruding from the top surface of the main mold, and an ejector pin hole extending through the mold core along its length; a material discharge tube disposed in the tube hole, the inner diameter of the material discharge tube being larger than the diameter of the central circular hole of the workpiece to be processed; an ejector pin movably disposed in the ejector pin hole; a rear mold fixedly connected to the main mold below the main mold, the rear mold having a cavity coaxial with a first movable cavity in the middle, and a discharge port disposed on the side wall of the rear mold; a movable rod slidably disposed relative to the rear mold in the rear mold, the movable rod being located below the material discharge tube, a mating hole being opened at the end of the movable rod that contacts the material discharge tube, and a discharge port communicating with the mating hole being disposed on the side wall of the movable rod, the discharge port communicating with the discharge port.

[0006] Preferably, a baffle is provided in the through hole of the main mold. The baffle is an annular plate, and the inner diameter of the baffle matches the diameter of the material leakage pipe, so that the material leakage pipe can slide relative to the baffle.

[0007] Preferably, the baffle is provided with a limiting hole parallel to the length direction of the ejector pin.

[0008] Preferably, the baffle is located below the mold core and is in contact with the mold core, and a first movable cavity is formed below the baffle.

[0009] Preferably, the rear mold sidewall is provided with a mounting hole that is perpendicular to and penetrates the rear mold sidewall. The distance between the mounting hole and the bottom surface of the rear mold is greater than the sliding distance of the movable rod relative to the rear mold. The mounting hole is a threaded hole. A limit groove is provided at the position of the movable rod corresponding to the mounting hole. The limit groove is provided along the length direction of the movable rod.

[0010] Preferably, a positioning screw is provided in the mounting hole, and the positioning screw is inserted into the limiting groove.

[0011] Preferably, the diameter of the end of the movable rod away from the discharge pipe is smaller than the diameter of the end in contact with the discharge pipe; a limiting ring is provided on the bottom surface of the cavity of the rear mold, and the inner diameter of the limiting ring is smaller than the diameter of the end of the movable rod in contact with the discharge pipe, so as to restrict the movable rod in the rear mold.

[0012] Preferably, the diameter of the mating hole matches the diameter of the leakage tube, so that the leakage tube can be inserted into the movable rod; the diameter of the connection between the outlet and the mating hole is not less than the inner diameter of the leakage tube.

[0013] Preferably, the end of the movable rod that contacts the discharge pipe is provided with a reserved hole that is perpendicular to the mating hole. The reserved hole is a threaded hole that passes through the movable rod. Two fixing screws are provided in the reserved hole. The fixing screws abut against the discharge pipe to fix the movable rod and the discharge pipe in place.

[0014] Preferably, the end of the ejector pin that contacts the rear mold has a protrusion with a diameter larger than that of the ejector pin.

[0015] The above-mentioned technical solutions in the in-mold material leakage and trimming die provided by this utility model embodiment have at least one of the following technical effects:

[0016] This utility model discloses an in-mold material discharge and trimming mold. With the cooperation of the main mold, mold core, rear mold, movable rod, material discharge tube and ejector pin, it can simultaneously perform through hole and trimming processes on the parts, and can also demold the parts and remove and discharge the waste material. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A front view of an in-mold material leakage and edge trimming mold provided for an embodiment of this utility model.

[0019] Figure 2 for Figure 1 Sectional view at point AA.

[0020] Figure 3 A partial view of an in-mold material leakage and edge trimming mold provided for an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the state in which the workpiece is ejected by an in-mold material leakage and edge trimming mold, which is provided as an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the part to be processed and the finished part.

[0023] The following are the labeling elements in the figure:

[0024] 10—Main mold; 11—Baffle; 12—Limiting hole; 13—First movable cavity; 20—Mold core

[0025] 21—Ejector pin hole; 22—Pipe hole; 30—Rear mold; 31—Mounting hole; 32—Positioning screw

[0026] 33—Limiting ring; 34—Discharge port; 40—Modular rod; 41—Matching hole; 42—Discharge port

[0027] 43—Pre-drilled hole; 44—Fixing screw; 50—Discharge tube; 60—Ejector pin; 70—Workpiece to be processed.

[0028] 80—Finished parts. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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.

[0031] Furthermore, the terms "first" and "second" 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] In one embodiment of this utility model, such as Figure 1 , 2 As shown, an in-mold material discharge and trimming mold is provided, including a main mold 10, a mold core 20, a rear mold 30, a movable rod 40, a material discharge tube 50, and an ejector pin 60.

[0034] The main mold 10 is a cylinder with a through hole in the middle. The mold core 20 is fixedly installed in the through hole of the main mold 10. The mold core 20 has a tube hole 22 coaxial with the mold core 20 in the middle. The top surface of the mold core 20 protrudes from the top surface of the main mold 10, forming a working surface for trimming the workpiece 70.

[0035] An ejector pin hole 21 is provided through the mold core 20 along its length. An ejector pin 60 is movably disposed in the ejector pin hole 21 and can slide along the ejector pin hole 21. A material discharge tube 50 is disposed in the tube hole 22 of the mold core 20 and can slide relative to the mold core 20.

[0036] The main mold 10 is fixedly connected to the rear mold 30 at the bottom. The rear mold 30 has a cavity in the middle, which is coaxially arranged with the through hole of the main mold 10. The movable rod 40 is installed in the cavity of the rear mold 30. The movable rod 40 can slide relative to the rear mold 30, and the movable rod 40 is located below the material discharge pipe 50.

[0037] The end of the movable rod 40 that contacts the discharge tube 50 has a mating hole 41, and the lower end of the discharge tube 50 can be inserted into the mating hole 41 to achieve precise connection between the two. The side wall of the rear mold 30 has a discharge port 34, and the side wall of the movable rod 40 has a discharge port 42, which is connected to the mating hole 41.

[0038] Specifically, a baffle 11 is provided in the through hole of the main mold 10. The baffle 11 is an annular plate. The baffle 11 is located below the mold core 20 and is in contact with the mold core 20. A first movable cavity 13 is formed below the baffle 11. The inner diameter of the baffle 11 matches the diameter of the sprue tube 50, so that the sprue tube 50 can slide relative to the baffle 11. At the same time, the baffle 11 is also provided with a limiting hole 12 coaxially arranged with the ejector pin hole 21, so that the ejector pin 60 can contact the movable rod 40 while also sliding relative to the mold core 20.

[0039] The rear mold 30 has a mounting hole 31 that penetrates perpendicularly through the side wall. The mounting hole 31 is a threaded hole and contains a positioning screw 32. The distance between the mounting hole 31 and the bottom surface of the rear mold 30 is greater than the sliding distance of the movable rod 40 relative to the rear mold 30. After the movable rod 40 is installed in the rear mold 30, a limit groove is formed at the position of the movable rod 40 corresponding to the mounting hole 31. The limit groove is set along the length direction of the movable rod 40. The positioning screw 32 is inserted into the limit groove to prevent the movable rod 40 from rotating, so that the discharge port 34 and the outlet port 42 remain in communication.

[0040] The bottom surface of the cavity of the rear mold 30 is provided with a limiting ring 33. The diameter of the end of the movable rod 40 away from the discharge pipe 50 is smaller than the diameter of the end that contacts the discharge pipe 50. The inner diameter of the limiting ring 33 is smaller than the diameter of the contact end of the movable rod 40, which can prevent the movable rod 40 from falling out of the rear mold 30.

[0041] The diameter of the mating hole 41 on the movable rod 40 matches the diameter of the material leakage pipe 50, ensuring that the material leakage pipe 50 can be stably inserted into the movable rod 40. The diameter of the outlet 42 at the point of connection with the mating hole 41 is not less than the inner diameter of the material leakage pipe 50, ensuring that waste material can pass through smoothly. The end of the movable rod 40 that contacts the material leakage pipe 50 is also provided with a reserved hole 43 perpendicular to the mating hole 41. The reserved hole 43 is a threaded hole that passes through the movable rod 40. Two fixing screws 44 are provided inside the reserved hole 43. The fixing screws 44 pass through the mating hole 41 and abut against the material leakage pipe 50, fixing the movable rod 40 and the material leakage pipe 50 together.

[0042] The end of the ejector pin 60 that contacts the rear mold 30 is provided with a protrusion with a diameter larger than that of the ejector pin 60, and the protrusion is fixedly connected to the movable rod 40.

[0043] The working principle of the in-mold material leakage trimming die is as follows: During processing, the cylindrical part of the workpiece 70 enters the tube hole 22 of the mold core 20, and the disc part of the workpiece 70 is placed on the part of the mold core 20 that protrudes from the top surface of the main mold 10. The external pressure mechanism drives the mother mold, which has a groove in the middle that matches the shape of the finished part 80, to apply pressure to the workpiece 70. The mother mold also has a stamping rod in the middle that matches the diameter of the middle hole of the workpiece 70, so that the workpiece 70 can be trimmed and holed under the pressure of the mother mold. The waste material generated in the hole of the workpiece 70 enters the mating hole 41 of the movable rod 40 through the material leakage pipe 50 and is discharged through the discharge port 34 of the rear mold 30. After processing, the movable rod 40, under the action of external driving force, drives the ejector pin 60 and the material discharge tube 50 to move upward along the first movable cavity 13, ejecting the finished part 80 from the mold core 20, thus demolding the part. At the same time, the waste material generated by trimming is ejected from the mold core 20, thus demolding the waste material. At this time, the state of the mold is as follows: Figure 4 As shown. During the sliding process of the movable rod 40, the positioning screw 32 can limit its circumferential movement, ensuring that the discharge port 42 and the discharge port 34 remain connected. After the waste material is discharged, the movable rod 40 drives the discharge tube 50 and the ejector pin 60 to reset, preparing for the next processing cycle. Through the coordinated action of each component, the integrated operation of through-hole drilling, edge trimming, part demolding, and waste material discharge is achieved, greatly improving processing efficiency and stability.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An in-mold material discharge and edge trimming mold, characterized in that: The system includes a main mold (10) with a through hole in the middle, a mold core (20) fixedly disposed in the main mold (10), a tube hole (22) coaxially disposed in the middle of the mold core (20), the top surface of the mold core (20) protruding from the top surface of the main mold (10), and an ejector pin hole (21) through the mold core (20) along the length direction of the mold core (20); a material drain tube (50) is disposed in the tube hole (22), the inner diameter of the material drain tube (50) being larger than the diameter of the central circular hole of the workpiece to be processed; an ejector pin (60) is movably disposed in the ejector pin hole (21); and a part is disposed below the main mold (10) that is connected to the main mold (10). 0) A fixedly connected rear mold (30) is provided in the middle of the rear mold (30) with a cavity coaxial with the first movable cavity (13), and a discharge port (34) is provided on the side wall of the rear mold (30); a movable rod (40) is provided in the rear mold (30) and is slidably disposed relative to the rear mold (30). The movable rod (40) is located below the discharge pipe (50). A mating hole (41) is provided at the end of the movable rod (40) that contacts the discharge pipe (50). A discharge port (42) is provided on the side wall of the movable rod (40) and communicates with the mating hole (41). The discharge port (42) communicates with the discharge port (34).

2. The in-mold material leakage and edge trimming mold according to claim 1, characterized in that: A baffle (11) is provided in the through hole of the main mold (10). The baffle (11) is an annular plate. The inner diameter of the baffle (11) matches the diameter of the material leakage pipe (50), so that the material leakage pipe (50) can slide relative to the baffle (11).

3. The in-mold material leakage and edge trimming mold according to claim 2, characterized in that: The baffle (11) is provided with a limiting hole (12) parallel to the length direction of the ejector pin (60).

4. The in-mold material leakage and edge trimming mold according to claim 2, characterized in that: The baffle (11) is located below the mold core (20) and is in contact with the mold core (20), and a first movable cavity (13) is formed below the baffle (11).

5. The in-mold material leakage and edge trimming mold according to claim 1, characterized in that: The rear mold (30) has a mounting hole (31) that is perpendicular to and penetrates the side wall of the rear mold (30). The distance between the mounting hole (31) and the bottom surface of the rear mold (30) is greater than the sliding distance of the movable rod (40) relative to the rear mold (30). The mounting hole (31) is a threaded hole. A limiting groove is provided at the position of the movable rod (40) corresponding to the mounting hole (31). The limiting groove is provided along the length direction of the movable rod (40).

6. The in-mold material leakage and edge trimming die according to claim 5, characterized in that: The mounting hole (31) is provided with a positioning screw (32), which is inserted into the limiting groove.

7. The in-mold material leakage and edge trimming die according to claim 1, characterized in that: The diameter of the end of the movable rod (40) away from the discharge pipe (50) is smaller than the diameter of the end that contacts the discharge pipe (50); a limiting ring (33) is provided on the bottom surface of the cavity of the rear mold (30), and the inner diameter of the limiting ring (33) is smaller than the diameter of the end of the movable rod (40) that contacts the discharge pipe (50) so as to restrict the movable rod (40) in the rear mold (30).

8. The in-mold material leakage and edge trimming mold according to claim 1, characterized in that: The diameter of the mating hole (41) matches the diameter of the material leakage pipe (50), so that the material leakage pipe (50) can be inserted into the movable rod (40); the diameter of the outlet (42) and the mating hole (41) through connection is not less than the inner diameter of the material leakage pipe (50).

9. The in-mold material leakage and edge trimming die according to claim 1, characterized in that: The movable rod (40) has a reserved hole (43) at the end that contacts the discharge pipe (50) and is perpendicular to the mating hole (41). The reserved hole (43) is a threaded hole that passes through the movable rod (40). Two fixing screws (44) are provided in the reserved hole (43). The fixing screws (44) abut against the discharge pipe (50) to fix the movable rod (40) and the discharge pipe (50) in place.

10. An in-mold material-discharging and edge-trimming die according to claim 1, characterized in that: The end of the ejector pin (60) that contacts the rear mold (30) is provided with a protrusion with a diameter larger than that of the ejector pin (60).

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