Plastic mold sprue trimming structure

Abstract

The utility model belongs to the technical field of plastic mold pouring gates, and particularly relates to a plastic mold pouring gate trimming structure which comprises a shearing assembly and an air cylinder, and the bottom end of the shearing assembly is connected with a piston rod of the air cylinder. The shearing assembly comprises a first connecting piece, a second connecting piece and a third connecting piece, the two ends of the first connecting piece are rotationally connected with the bottom end of the second connecting piece through a first rotating shaft, and the top end of the second connecting piece is rotationally connected with the bottom end of the third connecting piece through a second rotating shaft; a blade is detachably arranged at the top end of the third connecting piece; and the bottom end of the first connecting piece is fixedly connected with the piston rod of the air cylinder. The plastic mold pouring gate has the effect of providing larger shearing force so as to trim the plastic mold pouring gate.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic mold gates, and in particular relates to a plastic mold gate trimming structure. Background Art

[0002] The traditional gate trimming method is to use standard pneumatic scissors to trim the gate. The standard scissors use the middle fulcrum as the rotation axis to trim the gate. The blade and handle of the standard scissors are an integral structure; and the shear force arm of the standard scissors is 1:1. Under this shear force arm, the shear force is small. The shear force specifications of the standard scissors are 25, 30, 50 and 100. There is no transition standard scissors between 50 and 100, and the standard scissors of 50 and 100 cannot meet the requirements of certain usage scenarios. Utility Model Content

[0003] The utility model aims to provide a plastic mold gate trimming structure to solve the technical problem of insufficient shearing force when trimming the gate, and to achieve the purpose of providing greater shearing force to trim the plastic mold gate.

[0004] In order to solve the above technical problems, the utility model provides a plastic mold gate trimming structure, comprising: a shearing assembly and a cylinder, wherein the bottom end of the shearing assembly is connected to the piston rod of the cylinder;

[0005] The shearing assembly comprises: a first connecting member, a second connecting member, and a third connecting member, wherein both ends of the first connecting member are rotatably connected to the bottom end of the second connecting member via a first rotating shaft, and the top end of the second connecting member is rotatably connected to the bottom end of the third connecting member via a second rotating shaft;

[0006] The top end of the third connecting member is detachably provided with a blade;

[0007] The bottom end of the first connecting member is fixedly connected to the piston rod of the cylinder.

[0008] Furthermore, a base is slidably provided on both sides of the shearing assembly, and the base includes: a plate body, the bottom end of the plate body is fixedly connected to the top end of the cylinder; the plate body includes a straight plate and a vertical plate, the bottom end of the vertical plate is fixedly connected to the top end of the straight plate, and the straight plate and the vertical plate are vertically arranged.

[0009] Furthermore, a material trough is provided in the middle of the vertical plate, and a pouring material handle is placed in the material trough; a through groove is provided at the bottom end of the material trough, and the first connecting member is arranged in the through groove.

[0010] Furthermore, the length of the material trough is 50 cm to 60 cm; the length of the through groove is equal to the length of the first connecting member, and the first connecting member is arranged parallel to the straight plate.

[0011] Furthermore, the width of the material trough is 14 cm to 16 cm, and the width of the through groove is 16 cm to 20 cm.

[0012] Furthermore, the third connecting member includes: a first connecting plate and a second connecting plate, the top end of the first connecting plate is fixedly connected to the bottom end of the second connecting plate, and the connection between the first connecting plate and the second connecting plate is rotatably connected to the base through a positioning pin.

[0013] Furthermore, the length of the first connecting plate is twice the length of the second connecting plate, and the axis of the first connecting plate extends in a direction away from the material trough.

[0014] Furthermore, the second connecting plate is arranged perpendicular to the blade, and the length of the second connecting plate is half of the width of the blade.

[0015] The beneficial effects of the utility model are:

[0016] 1. Through the connecting rod structure of the first connecting member, the second connecting member, and the third connecting member, the size of the force arm is effectively controlled so that the shear structure has sufficient shear force.

[0017] 2. The blade is detachably connected to the third connecting piece. When the blade head is worn, it can be removed and replaced, thus avoiding the waste of costs caused by scrapping the entire pair of scissors due to wear.

[0018] 3. By opening a material trough to place the material handle, the space is effectively utilized and the trimming structure is reduced.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the plastic mold gate trimming structure of the utility model;

[0022] Figure 2 yes Figure 1 A cross-sectional view of

[0023] Figure 3 yes Figure 1Another working state diagram.

[0024] In the figure:

[0025] 1. Base; 11. Plate; 12. Material trough; 13. Through slot;

[0026] 2. Shearing assembly; 21. First connecting member; 211. First rotating shaft; 22. Second connecting member; 221. Second rotating shaft; 23. Third connecting member; 231. Positioning pin;

[0027] 3. Blade;

[0028] 4. Cylinder. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example:

[0031] like Figures 1 to 3 As shown, a plastic mold gate trimming structure includes: a shearing component 2 and a cylinder 4, and the bottom end of the shearing component 2 is connected to the piston rod of the cylinder 4.

[0032] A base 1 is slidably provided on both sides of the shearing assembly 2, and the base 1 includes: a plate body 11, the bottom end of the plate body 11 is fixedly connected to the top end of the cylinder 4; the plate body 11 includes a straight plate and a vertical plate, the bottom end of the vertical plate is fixedly connected to the top end of the straight plate, and the straight plate and the vertical plate are vertically arranged; a material trough 12 is opened in the middle of the vertical plate, and a gate material handle is placed in the material trough 12; a through groove 13 is opened at the bottom end of the material trough 12.

[0033] like Figure 2 As shown, the shearing assembly 2 includes: a first connecting member 21, a second connecting member 22, and a third connecting member 23. The two ends of the first connecting member 21 are rotatably connected to the bottom end of the second connecting member 22 through a first rotating shaft 211, and the top end of the second connecting member 22 is rotatably connected to the bottom end of the third connecting member 23 through a second rotating shaft 221.

[0034] The bottom end of the first connecting member 21 is fixedly connected to the piston rod of the cylinder 4. The first connecting member 21 is arranged in the through groove 13. The length of the material groove 12 is 50cm to 60cm. The length of the through groove 13 is equal to the length of the first connecting member 21. The first connecting member 21 is arranged parallel to the straight plate. The width of the material groove 12 is 14cm to 16cm, and the width of the through groove 13 is 16cm to 20cm.

[0035] It should be noted here that: when the cylinder 4 is in the initial position, the blades 3 are not closed, the cylinder 4 pushes the first connecting member 21 to rise, the second connecting member 22 moves until they are gradually parallel, and the third connecting member 23 moves toward the center. When the first connecting member 21 reaches the top of the through groove 13, the first connecting member 21 stops moving, and the blade 3 closes to trim the gate.

[0036] The top end of the third connecting member 23 is detachably provided with a blade 3; the third connecting member 23 includes: a first connecting plate and a second connecting plate, the top end of the first connecting plate is fixedly connected to the bottom end of the second connecting plate, the connection between the first connecting plate and the second connecting plate is rotatably connected to the base 1 through a positioning pin 231, the length of the first connecting plate is twice the length of the second connecting plate, the axis of the first connecting plate extends in a direction away from the material trough 12, the second connecting plate is vertically arranged to the blade 3, and the length of the second connecting plate is half the width of the blade 3.

[0037] To sum up, the extension length of the piston rod of the cylinder 4 is adjusted to zero. At this time, the second connecting member 22 tends to be vertical and drives the third connecting member 23 to move outward. There is a gap between the blades 3. The staff puts the material handle of the plastic mold into the material trough 12 from between the blades 3 and starts the cylinder 4. The cylinder 4 drives the first connecting member 21 to rise. Since the positioning pin 231 positions the height of the third connecting member 23, the second connecting member 22 moves to be parallel, and the third connecting member 23 moves toward the center. When the first connecting member 21 reaches the top of the through groove 13, the first connecting member 21 stops moving, the blade 3 is closed, and the blade 3 trims the gate of the plastic mold during the movement.

[0038] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0039] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A plastic mold gate trimming structure, characterized in that: include: A shearing assembly (2) and a cylinder (4), wherein the bottom end of the shearing assembly (2) is connected to the piston rod of the cylinder (4); The shearing assembly (2) comprises: a first connecting member (21), a second connecting member (22), and a third connecting member (23), wherein both ends of the first connecting member (21) are rotatably connected to the bottom end of the second connecting member (22) via a first rotating shaft (211), and the top end of the second connecting member (22) is rotatably connected to the bottom end of the third connecting member (23) via a second rotating shaft (221); The top end of the third connecting member (23) is detachably provided with a blade (3); The bottom end of the first connecting member (21) is fixedly connected to the piston rod of the cylinder (4).

2. A plastic mold gate trimming structure as claimed in claim 1, characterized in that: Bases (1) are slidably provided on both sides of the shearing assembly (2), and the base (1) comprises: a plate body (11), the bottom end of the plate body (11) is fixedly connected to the top end of the cylinder (4); the plate body (11) comprises a straight plate and a vertical plate, the bottom end of the vertical plate is fixedly connected to the top end of the straight plate, and the straight plate and the vertical plate are arranged vertically.

3. A plastic mold gate trimming structure as claimed in claim 2, characterized in that: A material trough (12) is provided in the middle of the vertical plate, and a pouring material handle is placed in the material trough (12); a through groove (13) is provided at the bottom end of the material trough (12), and the first connecting member (21) is arranged in the through groove (13).

4. A plastic mold gate trimming structure as claimed in claim 3, characterized in that: The length of the material trough (12) is 50 cm to 60 cm; the length of the through groove (13) is equal to the length of the first connecting member (21), and the first connecting member (21) is arranged parallel to the straight plate.

5. A plastic mold gate trimming structure as claimed in claim 3, characterized in that: The width of the material trough (12) is 14 cm to 16 cm, and the width of the through groove (13) is 16 cm to 20 cm.

6. A plastic mold gate trimming structure as claimed in claim 3, characterized in that: The third connecting member (23) comprises: a first connecting plate and a second connecting plate, the top end of the first connecting plate being fixedly connected to the bottom end of the second connecting plate, and the connection between the first connecting plate and the second connecting plate being rotatably connected to the base (1) via a positioning pin (231).

7. A plastic mold gate trimming structure as claimed in claim 6, characterized in that: The length of the first connecting plate is twice the length of the second connecting plate, and the axis of the first connecting plate extends in a direction away from the material trough (12).

8. A plastic mold gate trimming structure as claimed in claim 6, characterized in that: The second connecting plate is arranged perpendicular to the blade (3), and the length of the second connecting plate is half the width of the blade (3).

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