CN219405225U - Injection mold for ball pen point - Google Patents

Abstract

The utility model discloses an injection mold for a ball-point pen point, and aims to provide an injection mold for a ball-point pen point, which has the advantages of simple operation steps, improved demolding operation efficiency and improved device practicability. The plastic injection molding device comprises a movable die and a fixed die, wherein an injection molding hole is formed in the fixed die, a push plate is connected to one side of the movable die, a shaping block is connected to the other side of the movable die, a shaping groove matched with the shaping block is formed in the fixed die, the injection molding hole is communicated with the shaping groove, a pull rod is arranged on the fixed die, one end of the pull rod is rotationally connected with the fixed die, the other end of the pull rod is opposite to the shaping block, a movable groove is formed in the fixed die, a rotating rod is connected to the movable groove, one end of the pull rod is connected with a rotating ring, the rotating ring is inserted with the rotating rod, a push rod is arranged on the movable die, one end of the push rod is connected with the movable die, the other end of the push rod is inserted with the movable groove, and the push rod is engaged with the rotating ring. The beneficial effects of the utility model are as follows: the operation steps and the structure are simplified, the demolding and blanking efficiency is improved, and the practicability is realized; improving the convenience and accuracy of operation.

Description

Injection mold for ball pen point

Technical Field

The utility model relates to the technical field of injection molding machines, in particular to an injection mold for a ball pen point.

Background

The die has a specific contour or cavity shape, and the blank can be separated (blanked) according to the contour shape by using the contour shape with the cutting edge. The blank can obtain a corresponding three-dimensional shape by using the shape of the inner cavity. The mold generally comprises a movable mold and a fixed mold (or a male mold and a female mold), which can be separated and combined. And taking out the workpiece when the workpiece is separated, and injecting the blank into the die cavity for forming when the workpiece is closed. The die is a precise tool, has a complex shape, bears the expansion force of a blank, has higher requirements on structural strength, rigidity, surface hardness, surface roughness and machining precision, and is one of important marks of the mechanical manufacturing level. After the injection molding part is molded, a person is required to take off the injection molding part manually, and then injection molding is performed next time, so that the problems of high cost and low efficiency are solved, and the injection molding part can be automatically separated after injection molding.

Chinese patent application publication No.: CN 214027017U, application publication date: 2021.08.24 the utility model discloses a mould for injection molding of a pen point of a ball pen. The movable die comprises a movable plate, a push plate, a movable die and a fixed die which are sequentially arranged from left to right, wherein the movable plate is fixedly connected with the movable die, a boss is fixedly connected to the right side face of the movable die, a concave hole which corresponds to and is matched with the boss is formed in the left side face of the fixed die, the movable die is connected with the fixed die in a plug manner, an injection hole is formed in the right side face of the fixed die, the injection hole is communicated with the concave hole, a push rod is arranged on the push plate, the push rod is arranged between the push plate and the fixed die, the push plate is elastically connected with the movable die, the push rod is in sliding connection with the movable die, and a through hole which penetrates through the left side face and the right side face is formed in the movable plate. The scheme has the following defects: when the demolding and blanking are carried out, after the push plate and the movable mold are moved outside, the push rod is required to be pushed again to move in the round hole II, so that the push rod withdraws the mold from the boss, the operation is complicated, a plurality of steps are required to operate, and the demolding efficiency and the practicability of the device are reduced.

In summary, the device is cumbersome to operate, and requires multiple steps to operate, so that the demolding efficiency and the practicability of the device are reduced.

Disclosure of Invention

The utility model provides the ball pen point injection mold which is simple in operation steps, improves the demolding operation efficiency and the device practicability, and overcomes the defects that the device in the prior art is complicated in operation and needs multiple steps to operate, and the demolding efficiency and the device practicability are reduced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a ball-point pen nib injection mold, including movable mould and cover half, be equipped with the hole of moulding plastics on the cover half, one side of movable mould is connected with the push pedal, the opposite side of movable mould is connected with the design piece, be connected with on the cover half with design piece assorted design groove, the hole of moulding plastics is linked together with the design groove, be equipped with the pull rod on the cover half, the one end and the cover half rotation of pull rod are connected, the other end and the design piece of pull rod are relative, be equipped with the movable groove on the cover half, be connected with the dwang on the movable groove, the one end of pull rod is connected with the swivel ring, the swivel ring is pegged graft with the dwang, be equipped with the push rod on the movable mould, the one end and the movable mould of push rod are connected, the other end and the movable groove grafting of push rod, push rod and swivel ring meshing are connected.

The push plate is arranged on one side of the movable mould, the fixed mould is arranged on the other side of the movable mould, the movable mould is pushed by the push plate, the shaping block on the movable mould enters the shaping groove, and the injection molding material is injected into the injection molding hole on the movable mould, so that the shaping block and the shaping groove form the shape of the pen point of the ball pen to be molded into a film. The movable mould is driven to reset by the push plate after the mould is cooled, the push rod connected to the movable mould is meshed with the rotating ring on the fixed mould, so that the pull rod on the fixed mould rotates at one end of the pull rod when the movable mould is reset, the other end of the pull rod is propped against the mould of the shaping block and applies force under the rotation, the shaping block is pushed out of the mould along with the movement of the fixed mould of the pull rod by the movable mould until the movable mould is completely reset, the mould can be separated and discharged after the mould is completely withdrawn, further additional operation is not needed, the mould can be separated through the reset movement of the movable mould, the operation steps and the structure are simplified, and the demoulding and discharging efficiency and the practicability of the injection mould are improved.

Preferably, the other end of the pull rod is provided with a connecting groove, a fixed block is arranged in the connecting groove, and the fixed block is connected with the pull rod. The fixed block is connected in the connecting groove rotation of the other end of the pull rod, and is connected with the shaping block vertically during the demolding, and the force application fixed block of the pull rod enables the force application of the fixed block to the shaping block to be enhanced, the demolding force is improved, and further the demolding is ensured to be smooth, and the structural stability is improved.

Preferably, the fixed block is connected with a stabilizing block, and the stabilizing block is made of rubber materials. The stabilizing block is made of a rubber material with certain flexibility, the stabilizing block is in contact with the surface of the die, the surface of the die is prevented from being damaged due to the fact that the surface of the die is too hard under the action of meshing rotation force application, meanwhile, the friction force of the surface contact surface of the die is improved, and the discharging effect of the die is guaranteed.

Preferably, a buffer rod is arranged between the fixed block and the stabilizing block, a buffer slot is arranged on the fixed block, one end of the buffer rod is connected with the stabilizing block, the other end of the buffer rod is inserted into the buffer slot, a spring is sleeved on the buffer rod, one end of the spring is connected with the fixed block, and the other end of the spring is connected with the stabilizing block. The fixed block and the stabilizing block are elastically connected through the spring, the buffer rod is sleeved in the spring, and the buffer rod is connected to the stabilizing block and can be movably inserted into the buffer slot on the fixed block through the spring, so that the pushing rod can buffer the stabilizing block when being meshed with the pull rod to move, the shaping block is ensured to be completely separated from the die when the stabilizing block applies force, the pushing rod is prevented from being unable to move on the rotating ring, and the effects of improving structural stability and operation accuracy are achieved.

Preferably, the movable mould is connected with a yielding groove, the position of the yielding groove is opposite to the pull rod, the connecting groove is connected with a plug rod, the plug rod is sleeved with a torsion spring, the fixed block is connected with the plug rod in an inserting mode, and the fixed block is elastically connected with the torsion spring. The position on the movable mould relative with the pull rod position is equipped with the groove of stepping down, when making movable mould and movable mould compound die, the pull rod income is stepping down the groove in the rotation, prevents to influence the compound die compactness of movable mould and cover half, and the spliced in the spread groove makes the fixed block rotate and connects on the pull rod through the grafting of inserted bar in addition, and the fixed block can be at the spread groove elastic rotation through the torsional spring simultaneously, and then makes the fixed block be convenient for along with the pull rod income is stepping down the inslot, and then makes the stable operation of structure be convenient for simultaneously.

Preferably, the movable die is connected with a limiting rod, and the fixed die is provided with a limiting groove matched with the limiting rod. And the movable die is connected with the limit rod, so that the die is clamped by inserting the limit rod into the limit groove, and the die clamping accuracy is improved.

Preferably, the push plate is connected with a fixing rod, the fixed die is provided with a fixing hole, and the fixing rod is spliced with the fixing hole. The fixed rod on the movable push plate is inserted into the fixed hole, so that the fixed rod reciprocates in the fixed hole in the moving process of the movable die, and the stability of die assembly is improved.

The beneficial effects of the utility model are as follows: the operation steps and the structure are simplified, the demolding and blanking efficiency of the injection mold is improved, and the practicability is realized; the operation is convenient, and the stability and fluency of the structure are high; improving the accuracy of the operation.

Drawings

FIG. 1 is a perspective view of the present utility model;

fig. 2 is a sectional view (injection-molded state) of fig. 1;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic view of the attachment of the fixed block to the tie rod;

FIG. 5 is a drawing of a first demolding state;

fig. 6 is a second demolding state diagram.

In the figure: 1. the device comprises a movable mould, a fixed mould, an injection molding hole, a push plate, a shaping block, a shaping groove, a pull rod, a movable groove, a rotary rod, a rotary ring, a push rod, a connecting groove, a fixed block, a stabilizing block, a yielding groove, a gear-inserting groove, a torsion spring, a limiting rod, a limiting groove, a fixing hole, a buffer rod, a buffer groove, a spring and a fixing rod.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, processes and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.

Examples

As shown in fig. 1 and 2, the injection mold for the ball pen point comprises a movable mold 1 and a fixed mold 2, wherein an injection molding hole 3 is formed in the fixed mold 2, a push plate 4 is connected to one side of the movable mold 1, a shaping block 5 is connected to the other side of the movable mold 1, a shaping groove 6 matched with the shaping block 5 is connected to the fixed mold 2, and the injection molding hole 3 is communicated with the shaping groove 6.

As shown in fig. 2 and 3, a pull rod 7 is arranged on the fixed mold 2, one end of the pull rod 7 is rotationally connected with the fixed mold 2, the other end of the pull rod 7 is opposite to the shaping block 5, a movable groove 8 is arranged on the fixed mold 2, a rotating rod 9 is connected to the movable groove 8, one end of the pull rod 7 is connected with a rotating ring 10, the rotating ring 10 is spliced with the rotating rod 9, a push rod 11 is arranged on the movable mold 1, one end of the push rod 11 is connected with the movable mold 1, the other end of the push rod 11 is spliced with the movable groove 8, and the push rod 11 is meshed with the rotating ring 10. The other end of the pull rod 7 is provided with a connecting groove 12, a fixed block 13 is arranged in the connecting groove 12, and the fixed block 13 is connected with the pull rod 7. The fixed block 13 is connected with a stabilizing block 14, and the stabilizing block 14 is made of rubber materials. The push plate 4 is connected with a fixing rod 24, the fixed die 2 is provided with a fixing hole 20, and the fixing rod 24 is spliced with the fixing hole 20.

As shown in fig. 3 and 4, a buffer rod 21 is arranged between the fixed block 13 and the stabilizing block 14, a buffer slot 22 is arranged on the fixed block 13, one end of the buffer rod 21 is connected with the stabilizing block 14, the other end of the buffer rod 21 is inserted into the buffer slot 22, a spring 23 is sleeved on the buffer rod 21, one end of the spring 23 is connected with the fixed block 13, and the other end of the spring 23 is connected with the stabilizing block 14. The movable mould 1 is connected with a yielding groove 15, the position of the yielding groove 15 is opposite to the pull rod 7, an inserting rod 16 is connected in the connecting groove 12, a torsion spring 17 is sleeved on the inserting rod 16, the fixed block 13 is spliced with the inserting rod 16, and the fixed block 13 is elastically connected with the torsion spring 17. The movable mould 1 is connected with a limiting rod 18, and the fixed mould 2 is provided with a limiting groove 19 matched with the limiting rod 18.

As shown in fig. 1-6: the push plate 4 pushes the movable die 1 to move straightly, the limiting rod 18 is inserted into the limiting groove 19 to limit the insertion distance of the shaping block 5 into the shaping groove 6, and the gap shape of the shaping block 5 in the shaping groove 6 is an injection molding shape, wherein when the movable die 1 approaches to the movable die 1, the push rod 11 pushes the pull rod 7 to gradually rotate leftwards through the meshed rotating ring 3, the pull rod 7 carries the fixing block 13 into the yielding groove 15, the pull rod 7 and the fixing block 14 carry the stabilizing block 14 to move upwards along the groove wall of the yielding groove 15 until the limiting rod 18 completely enters the limiting groove 19, the length of the pull rod 7 is prevented from affecting die assembly, and meanwhile, the fixing block 13 can rotate leftwards due to the torsion spring 17, so that smooth and rapid die assembly flow is ensured.

The torsion spring 17 is sleeved on the inserted link 16, wherein one end of the torsion spring is propped against the fixed block 13, and the other end is propped against the groove wall of the connecting groove 12, so that the fixed block 13 is perpendicular to the transverse central axis of the shaping block 5 (the mould) under no external force (the fixed block 13 leaves the abdication groove 15), and descends along with the rotation of the stabilizing block 14 and makes vertical force application contact with the surface of the mould through the spring 23 so as to compress the mould for demoulding.

When the die is assembled: pushing the push plate 4 to enable the movable die 1 to be close to the fixed die 2, enabling the fixed rod 24 to slide in the fixed hole 20, enabling the push rod 11 to engage with the rotating ring 10 to rotate, enabling the push rod 11 to rotate the pull rod 7, enabling the pull rod 7 to carry the fixed block 13 (the stabilizing block 14) to enter the abdication groove 15 until the limiting rod 18 enters the limiting groove 19, namely die assembly is completed, and then injecting molding materials through the injection molding hole 3 to enable the shape of the ballpoint pen point to be formed in the gap between the molding block 5 and the molding groove 6 to be molded (as shown in fig. 2).

And (5) blanking and demolding: after the mold is cooled, the push plate 4 is reversely moved, the push plate 4 pulls the movable mold 1 to leave the fixed mold 2, the fixed rod 24 reversely slides in the fixed hole 20, the limiting rod 18 leaves the limiting groove 19, meanwhile, the push rod 11 reversely rotates the rotating ring 10 to enable the pull rod 6 and the fixed block 13 (the stabilizing block 14) to slide up and down on the groove wall of the yielding groove 15 until the limiting rod 18 completely leaves the limiting groove 19, the pull rod 6 is arranged above the mold, the fixed block 13 presses the stabilizing block 14 vertically, and the fixed block 13 drives the pressing and stabilizing block 14 to vertically press the mold, so that the fixed block 5 completely exits the mold when completely resetting, and the mold can be freely separated from blanking under the action of gravity to finish blanking and demolding (as shown in fig. 5 and 6).

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. The utility model provides a ball-point pen nib injection mold, characterized by, including movable mould (1) and cover half (2), be equipped with injection molding hole (3) on cover half (2), one side of movable mould (1) is connected with push pedal (4), the opposite side of movable mould (1) is connected with shaping block (5), be connected with on cover half (2) with shaping block (5) assorted design groove (6), injection molding hole (3) are linked together with shaping groove (6), be equipped with pull rod (7) on cover half (2), the one end and cover half (2) rotation of pull rod (7) are connected, the other end and the shaping block (5) of pull rod (7) are relative, be equipped with movable groove (8) on cover half (2), be connected with dwang (9) on movable groove (8), the one end of pull rod (7) is connected with swivel becket (10), swivel becket (10) are pegged graft with dwang (9), be equipped with push rod (11) on movable mould (1), the one end and push rod (11) are connected with swivel becket (11).

2. The injection mold for the ball pen point according to claim 1, wherein a connecting groove (12) is formed in the other end of the pull rod (7), a fixing block (13) is arranged in the connecting groove (12), and the fixing block (13) is connected with the pull rod (7).

3. The injection mold for the ball-point pen point according to claim 2, wherein the fixed block (13) is connected with a stabilizing block (14), and the stabilizing block (14) is made of rubber materials.

4. The injection mold for the ball-point pen point according to claim 3, characterized in that a buffer rod (21) is arranged between the fixed block (13) and the stabilizing block (14), a buffer slot (22) is arranged on the fixed block (13), one end of the buffer rod (21) is connected with the stabilizing block (14), the other end of the buffer rod (21) is inserted into the buffer slot (22), a spring (23) is sleeved on the buffer rod (21), one end of the spring (23) is connected with the fixed block (13), and the other end of the spring (23) is connected with the stabilizing block (14).

5. The injection mold for the ball pen point according to claim 2, wherein the movable mold (1) is connected with a yielding groove (15), the position of the yielding groove (15) is opposite to that of the pull rod (7), an inserting rod (16) is connected in the connecting groove (12), a torsion spring (17) is sleeved on the inserting rod (16), the fixed block (13) is inserted with the inserting rod (16), and the fixed block (13) is elastically connected with the torsion spring (17).

6. The injection mold for the ball-point pen point according to claim 1, wherein the movable mold (1) is connected with a limiting rod (18), and the fixed mold (2) is provided with a limiting groove (19) matched with the limiting rod (18).

7. The injection mold for the ball-point pen point according to claim 1, wherein the push plate (4) is connected with a fixing rod (24), the fixed mold (2) is provided with a fixing hole (20), and the fixing rod (24) is inserted into the fixing hole (20).