CN211251098U

CN211251098U - Injection molding mold of elastic key

Info

Publication number: CN211251098U
Application number: CN201922129428.7U
Authority: CN
Inventors: 陆洪彬; 何平周; 陆洪祥
Original assignee: Jinyutai Huizhou Industrial Co ltd
Current assignee: Jinyutai Huizhou Industrial Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-14
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses an injection moulding mould of elasticity button is provided with and moves the module of moulding plastics, decides the shaping module and play arm shaping external member. The elastic arm forming groove is formed, so that the elastic arm and the key can be integrally molded by injection, the integral mechanical strength of the finished key is improved, and the durability of the finished key is improved; the arrangement of the reinforcing rib forming grooves enhances the structural strength of the elastic arm and prolongs the service life of the elastic arm; the reinforcing block forming grooves are formed, so that the reinforcing blocks can be formed at the connecting positions of the keys and the elastic arms, the connecting reliability between the keys and the elastic arms is improved, and the connecting positions of the keys and the elastic arms are prevented from being broken; the semicircular convex parts are arranged, so that semicircular grooves can be formed on the surfaces of the keys, the contact areas of the fingers and the keys are increased, the friction force between the keys and the fingers is increased, and finally, the effect of preventing the keys from slipping when being operated by a user is achieved.

Description

Injection molding mold of elastic key

Technical Field

The utility model relates to an injection moulding mould technical field especially relates to an injection moulding mould of elasticity button.

Background

In daily life and production, various keys are often needed, and people can control various different devices or instruments and the like to execute corresponding work by operating the keys, so that the daily life and production of people are greatly facilitated. The existing keys are generally made by an injection molding mold, and an injection molding machine injects glue into the injection molding mold so that the glue is molded according to a predetermined shape.

However, the injection mold for the key still has the following disadvantages in the actual injection and application processes: firstly, the keys are generally arranged on the elastic arms, the existing mold can only respectively perform injection molding on the elastic arms and the keys, then the keys and the elastic arms are connected into a whole, and finally finished keys are manufactured, but the efficiency of manufacturing the finished keys by adopting the mode is very low; secondly, in the long-term use process of the finished key, the connecting position of the key and the elastic arm is easy to split, and the elastic arm is also easy to break, but the elastic arm and the key are respectively manufactured, so that the connecting position of the key and the elastic arm is difficult to reinforce through injection molding, and the durability of the finished key is very low; in addition, the rear mold of the injection mold is fixed on the injection molding machine, specifically, the rear mold is screwed on the injection molding machine after being penetrated through by a locking screw, however, in the actual installation process, under the condition of locking a single screw, other fixing holes on the rear mold cannot be aligned to other threaded holes on the injection molding machine, so that a worker needs to repeatedly finely adjust the installation position of the rear mold, so that all the fixing holes on the rear mold can be aligned with the threaded holes on the injection molding machine in a one-to-one correspondence manner, and thus, the assembly efficiency of the injection molding mold is very low; in addition, the surface of the injection molded key tends to be smooth, so that when people operate the key, the finger and the key are easy to slip and not easy to operate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide one kind not only can mould plastics elastic arm and button to an organic whole to can carry out the reinforcement to the hookup location department of elastic arm and button at the in-process of moulding plastics, can also improve workman assembly efficiency simultaneously, can also avoid injection moulding's button to take place the injection moulding mould of the elastic button of phenomenon of skidding easily in the practical application process in addition.

The purpose of the utility model is realized through the following technical scheme:

an injection mold for an elastic key, comprising:

the movable injection molding module comprises an injection molding template and a molding template, wherein a glue inlet is formed in the injection molding template, a key molding groove is formed in the molding template, the molding template is used for being mounted on the injection molding template, so that the key molding groove is communicated with the glue inlet, and a semicircular bulge is arranged at the bottom of the key molding groove;

the fixed forming module comprises a fixed die base plate, a key cavity forming boss and a plurality of fixed die screws, wherein the fixed die base plate is provided with a plurality of mounting waist holes, the key cavity forming boss is arranged on the fixed die base plate, the end parts of the fixed die screws penetrate through the mounting waist holes in a one-to-one correspondence manner, and the end parts of the fixed die screws are screwed on the injection molding machine; and

the elastic arm forming kit comprises a fixed base body and an elastic arm forming block, the fixed base body is mounted on the forming template, the elastic arm forming block is mounted on the fixed base body, an elastic arm forming groove is formed in the elastic arm forming block, a reinforcing rib forming groove is formed in the bottom of the elastic arm forming groove, and a reinforcing block forming groove is formed in the side wall of the elastic arm forming groove;

the forming template is used for covering and locating when the cover die base plate is on, so that the key cavity forming boss is inserted in the key forming groove, thereby making the cover die base plate the key cavity forming boss with the injection molding template encloses into the key forming cavity jointly, the key forming cavity respectively with the key forming groove with the elastic arm forming groove communicates.

In one embodiment, the mounting waist holes are distributed in axial symmetry with the central axis of the fixed mold base plate.

In one embodiment, the forming mold plate is provided with a guide pillar, the fixed mold base plate is provided with a guide hole, and the guide pillar penetrates through the guide hole.

In one embodiment, the guide post is provided with a plurality of oil storage tanks.

In one embodiment, the elastic arm forming block is further provided with a support forming groove, and the support forming groove is communicated with the elastic arm forming groove.

In one embodiment, a mounting flat angle is arranged at the corner position of the fixed mold base plate.

In one embodiment, the fixed mold substrate is provided with a water inlet and a water outlet, and the water inlet is communicated with the water outlet.

In one embodiment, the width of the mounting waist hole is 18 mm-22 mm.

In one embodiment, the bottom of the key forming groove is further provided with a concave grain forming groove.

In one embodiment, the rib-forming grooves have a rectangular cross-section.

Compared with the prior art, the utility model discloses advantage and beneficial effect below having at least:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of an injection mold for an elastic key according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a dynamic injection molding module and a spring arm forming assembly according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the movable injection molding module and the elastic arm molding assembly shown in FIG. 2 at A;

fig. 4 is a schematic view of a fracture structure of a stationary mold according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a finished key.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an injection mold 10 for an elastic key includes a movable injection mold 100, a fixed mold 200, and an elastic arm mold assembly 300, wherein the injection mold 100 and the fixed mold 200 are respectively disposed on an injection molding machine, and the elastic arm mold assembly 300 is mounted on the movable injection mold 100.

Therefore, it should be noted that the movable injection molding module 100 and the fixed molding module 200 are driven by an injection molding machine to be closed, so that the movable injection molding module 100 and the fixed molding module 200 together enclose a key molding cavity, and the key molding cavity is used for molding a key; the spring arm forming kit 300 is used to form a spring arm.

Referring to fig. 2 and fig. 3, the movable injection mold 100 includes an injection mold plate 110 and a molding mold plate 120, the injection mold plate 110 is provided with a glue inlet 111, the molding mold plate 120 is provided with a key molding groove 121, the molding mold plate 120 is configured to be mounted on the injection mold plate 110, so that the key molding groove 121 is communicated with the glue inlet 111, and the bottom of the key molding groove 121 is provided with a semicircular protruding portion 122.

Thus, it should be noted that the injection mold plate 110 is mounted on the injection molding machine, and is used for mounting and fixing the molding mold plate 120; the glue inlet 111 formed in the injection molding template 110 plays a role of guiding glue to flow into the key molding groove 121, and the glue injected from the injection molding machine to the glue inlet 111 flows into the key molding groove 121; the molding template 120 is used for being tightly attached to the fixed molding module 200, so that the purpose of mold closing is achieved; the key forming groove 121 is used for forming a key; the sizing material that flows into in button shaping groove 121 can hug closely in the lateral wall of semicircle bellying 122 for can form the semicircular recess corresponding with semicircle bellying 122 on the last fashioned button, thereby increase the area of contact of user's finger and button, and then can be under the condition that does not change button surface friction coefficient, increase the frictional force of finger and button, that is, semicircle bellying 122's setting, make the button can be under the condition of guaranteeing surface finish, the technical problem that takes place to skid easily when can solving user operation button.

Referring to fig. 4, the fixed mold module 200 includes a fixed mold base plate 210, a key cavity molding boss 220 and a plurality of fixed mold screws 230, wherein the fixed mold base plate 210 is provided with a plurality of mounting waist holes 211, the key cavity molding boss 220 is disposed on the fixed mold base plate 210, the end portions of the fixed mold screws 230 are correspondingly inserted through the mounting waist holes 21 one by one, and the end portions of the fixed mold screws 230 are screwed on the injection molding machine.

Thus, it should be noted that the fixed mold substrate 210 is mounted on an injection molding machine, and when the mold closing is completed, the fixed mold substrate 210 is in close contact with the molding template 120, so that the fixed mold substrate 210 and the molding template 120 together enclose a key molding cavity; the key cavity forming boss 220 is used for forming a cavity on the key, so that rubber materials required by key forming are reduced, and the manufacturing cost of the key is saved; the fixed mold screw 230 is used for penetrating through the installation waist hole 211 and then is in threaded connection with the injection molding machine, so that the fixed mold base plate 210 is fixed on the injection molding machine.

Secondly, it should be further noted that, during the cooling and forming process of the rubber material in the key forming groove 121, the rubber material tightly adhered to the groove wall of the key forming groove 121 can transfer heat to the forming template 120, and the rubber material tightly adhered to the key cavity forming boss 220 can transfer the rubber material to the fixed mold base plate 210, so that during the cooling and forming process of the key, the phenomenon that the cooling and forming speed of the local rubber material is low does not occur, and further, the phenomenon that the surface of the key is subjected to flower drawing and the like due to the fact that the local part of the key is not cooled and formed during demoulding is prevented.

In addition, it should be noted that when the fixed mold base plate 210 needs to be fixed on the injection molding machine, the fixed mold base plate 210 is difficult to reach an ideal installation position, so that a worker needs to repeatedly fine-tune the relative position of the fixed mold base plate 210 and the injection molding machine, so that the installation holes on the fixed mold base plate 210 can be aligned with the fixing holes on the injection molding machine in a one-to-one correspondence manner, which is very inconvenient; the installation waist holes 211 are formed, so that after a worker inserts a single fixed mold screw 230 into one installation waist hole 211 and screws the fixed mold screw on the injection molding machine, although the fixed mold base plate 210 deviates from a preset installation position, the rest installation waist holes 211 can be aligned with other fixing holes on the injection molding machine; the installation error of the fixed mold base plate 210 on the injection molding machine can be overcome to a certain extent by arranging the installation waist holes 211.

Referring to fig. 2 and 3, the elastic arm forming assembly 300 includes a fixed base 310 and an elastic arm forming block 320, the fixed base 310 is mounted on the forming mold 120, the elastic arm forming block 320 is mounted on the fixed base 310, an elastic arm forming groove 321 is formed in the elastic arm forming block 320, a reinforcing rib forming groove 322 is formed in the bottom of the elastic arm forming groove 321, and a reinforcing block forming groove 323 is formed in a side wall of the elastic arm forming groove 322.

Thus, it should be noted that the fixed base 310 is used for installing and fixing the elastic arm forming block 320; the elastic arm forming block 320 is used for forming an elastic arm of the finished key; the rubber material entering the elastic arm forming groove 321 forms the elastic arm of the finished key after cooling and forming; after the rubber material entering the reinforcing rib forming groove 322 is cooled and formed, reinforcing ribs are formed on the elastic arms, so that the overall mechanical strength of the elastic arms is improved; the reinforcing block forming groove 323 is adjacent to the key forming groove 121; after the rubber material in the reinforcing block forming groove 323 is cooled and formed, a reinforcing block is formed between the formed key in the key forming groove 121 and the formed elastic arm in the elastic arm forming groove 321, so that the connection reliability of the elastic arm and the key is improved, the cracking of the connection position of the elastic arm and the key in the use process of the finished key is prevented, and the use reliability of the finished key is effectively improved.

Referring to fig. 3 and 4, when the molding plate 120 is disposed on the fixed mold substrate 210, the key cavity molding protrusion 220 is inserted into the key molding groove 121, so that the fixed mold substrate 210, the key cavity molding protrusion 220 and the injection molding plate 110 jointly form a key molding cavity, and the key molding cavity is respectively communicated with the key molding groove 121 and the elastic arm molding groove 321.

Thus, it should be noted that, when it is necessary to perform injection molding, the injection molding machine may drive the molding template 120 to move toward a direction close to the fixed mold substrate 210, so that the molding template 120 is tightly attached to the fixed mold substrate 210, meanwhile, the key cavity molding boss 220 is further inserted into the key molding groove 121, and finally, the fixed mold substrate 210, the key cavity molding boss 220 and the injection molding template 110 together enclose a key molding cavity, and the key molding cavity is used for molding keys.

In addition, it should be particularly noted that after the glue is injected into the key forming cavity, the glue is formed between the groove wall of the key forming groove 121 and the key cavity forming boss 220 to form the key; meanwhile, the rubber material is also molded in the elastic arm molding groove 321 to form an elastic arm; at the same time, the rubber material is also molded in the reinforcing rib molding groove 322, so that the reinforcing ribs are formed on the elastic arms; at the same time, the glue material is molded in the reinforcing block molding groove 323, and finally the finished key is formed. Thereby form the reinforcement piece in the hookup location department of elastic arm and button, and then strengthen the joint strength between elastic arm and the button, improved the durability of finished product button.

Referring to fig. 4 again, the mounting waist holes 211 are axially symmetrically distributed about the central axis of the fixed mold base 210.

In this way, it should be noted that, the mounting waist holes 211 are axially symmetrically disposed on the fixed mold base plate 210 about the central axis of the fixed mold base plate 210, so that the locking forces exerted on the fixed mold base plate 210 by the fixed mold screws 230 are balanced, and the fixed mold base plate 210 is prevented from generating a fit clearance with the injection molding machine due to insufficient local locking force.

Referring to fig. 1 again, the forming mold plate 120 is provided with a guide post 240, the fixed mold base 210 is provided with a guide hole 123, and the guide post 240 penetrates through the guide hole 123.

In this way, the guide post 240 and the guide hole 123 together function to guide the moving direction of the molding plate 120 of the injection molding die set 100; when the mold clamping is required, the molding template 120 moves along the central axis of the guide post 240, so that the molding template 120 can be attached to the fixed mold base plate 210 along a predetermined track, and the mold clamping precision of the injection mold is improved.

Referring to fig. 1 again, the guide post 240 is provided with a plurality of oil reservoirs 241.

In this way, it should be noted that the oil storage tank 241 is used for storing lubricating grease, preventing the lubricating grease from directly flowing out of the die from the guide hole 123, and further preventing the guide post 240 and the hole wall of the guide hole 123 from being worn due to lack of lubricating grease.

Referring to fig. 3 again, the elastic arm forming block 320 further has a supporting rod forming groove 324, and the supporting rod forming groove 324 is communicated with the elastic arm forming groove 321.

Thus, it should be noted that the strut molding groove 324 is used to form the strut on the elastic arm; the support column is used for supporting the elastic arm.

Referring to fig. 1 again, the fixed mold base plate 210 is provided with a flat installation angle 212 at the corner position.

Thus, it should be noted that the installation flat corner 212 is formed, so that a worker can quickly determine the correct installation position of the fixed mold substrate 210 according to the position of the installation flat corner 212, and the efficiency of assembling the fixed mold substrate 210 by the worker is improved.

Referring to fig. 1 again, the fixed mold base plate 210 is provided with a water inlet 213 and a water outlet 214, and the water inlet 213 is communicated with the water outlet 214.

In this way, it should be noted that, in the practical application process of the injection mold, besides relying on the heat exchange between itself and the air, the injection mold needs to be actively cooled. In the practical application process, cooling water can flow into the fixed mold base plate 210 through the water inlet 213, and the cooling water flows in the fixed mold base plate 210 and then flows out of the mold from the water outlet 214.

Secondly, it should be further noted that the flowing of the cooling water can cool the fixed mold base plate 210, so as to reduce the temperature of the key cavity forming boss 220, and further increase the cooling forming speed of the glue contacting with the key cavity forming boss 220.

Referring to fig. 4 again, the width of the waist hole 211 is 18mm to 22 mm.

Referring to fig. 3 again, the bottom of the key forming groove 121 is further formed with a concave forming groove.

Therefore, it should be noted that, in the actual injection molding process, after the sizing material flowing into the concave forming groove is cooled and formed, the sizing material located in the concave forming groove can form a plurality of raised lines on the surface of the workpiece after being cooled and formed, so that the friction coefficient between the hand of the user and the key is increased, and the finger of the user and the key are prevented from slipping.

Referring again to fig. 3, the rib-forming grooves 322 have a rectangular cross-section.

In this manner, the rubber material located in the bead molding groove 322 is cooled and molded to form a rectangular parallelepiped bead.

In order to better understand the technical solution of the present invention, please refer to fig. 3 and fig. 5 together, fig. 5 is a schematic structural diagram of a finished key, and in the injection molding process, the forming process of each component of the finished key is as follows:

the glue in the key forming groove 121 will form a key 410 as shown in figure 5,

the glue in the spring arm forming groove 321 will form the spring arm 420 as shown in figure 5,

the glue in the rib forming grooves 322 forms the ribs 430 as shown in figure 5,

the glue in the reinforcing block forming groove 323 will form the reinforcing block 440 as shown in figure 5,

the glue in the post forming grooves 324 forms the posts 450 as shown in figure 5.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An injection mold for an elastic key, comprising:

2. The injection mold for an elastic button according to claim 1, wherein the mounting waist holes are axially symmetrically distributed about a central axis of the fixed mold base.

3. The injection mold for forming an elastic key of claim 1, wherein the forming mold plate is provided with guide posts, the fixed mold base plate is provided with guide holes, and the guide posts penetrate through the guide holes.

4. The injection mold for elastic keys of claim 3, wherein the guide post is provided with a plurality of oil reservoirs.

5. The injection mold for an elastic key of claim 1, wherein the elastic arm forming block further defines a pillar forming groove, and the pillar forming groove is communicated with the elastic arm forming groove.

6. The injection mold for the elastic key of claim 1, wherein a flat installation corner is formed at a corner position of the fixed mold base plate.

7. The injection mold for the elastic keys of claim 1, wherein the fixed mold base plate is provided with a water inlet and a water outlet, and the water inlet is communicated with the water outlet.

8. The injection mold for elastic keys of claim 1, wherein the width of the waist-mounting hole is 18 mm-22 mm.

9. The injection mold for an elastic key of claim 1, wherein the bottom of the key forming groove is further provided with a concave grain forming groove.

10. The injection mold for forming an elastic button of claim 1, wherein the rib forming groove has a rectangular cross section.