Positioning and rod removing machine of petal type mold

Abstract

According to the positioning and rod removing machine of the petal type mold, the positioning and rod removing machine is arranged below a pressing machine, a discharging hole is vertically formed in the center of a supporting frame in a penetrating mode, a plurality of discharging grooves are annularly formed in the periphery of the discharging hole at equal intervals in a vertically-penetrating mode, and a supporting bevel edge is arranged at the top end of a movable supporting base; a positioning tip is vertically arranged at the front end of the top of the supporting frame, the positioning tip is arranged on the inner side of a positioning groove of the injection molding base in an embedded mode, and all contact lens molds on a petal-shaped mold are directly separated at a time through cooperation of a one-time downward pressing mode and a material distribution arc plate. According to the contact lens mold separation device, the waste runner can be integrally separated through the discharging hole and the discharging groove so that subsequent production can be facilitated, the contact lens molds can be directly classified and distinguished through the positioning tip before cutting and rod separation are conducted on the annular structures which are originally inconvenient to classify, and therefore quick connection and convenient classification are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of contact lens mold stripping, and specifically relates to a positioning stripping machine for petal-shaped molds. Background Art

[0002] When contact lenses are produced, resin molds are needed to shape the contact lenses, so that the silicone hydrogel can be injected into the resin mold for curing and molding. When the resin molds of contact lenses are produced, injection molding machines are needed for batch processing. When the resin molds of contact lenses are molded, the molds are also needed to cure the resin, so that the resin molds can mold the contact lens raw materials.

[0003] Usually, in order to facilitate subsequent work such as die stamping, pattern pad printing and demoulding in subsequent production, and also to maximize the material output during a single mold injection, the molds are mostly in the form of multiple petals, that is, the mold shape is equidistantly distributed in a ring, and the middle of the mold is connected by a runner.

[0004] During the production process of contact lenses inside the mold, the same pad printing pattern is pad printed on each petal-shaped mold inside a pad printing device. However, in order to improve the production efficiency of contact lenses, contact lens molds of different degrees are set on the same group of petal molds. That is to say, the degree of each mold in the circular equidistantly distributed molds is different. When pad printing the pattern, the same pattern will be directly pad printed on these contact lenses of different degrees at the same time, so that the same type of products can be produced at the same time.

[0005] Although the above form can increase production efficiency without opening multiple molds with different degrees and setting up pad printing classification production lines with different degrees, it is possible to achieve production of the same category only according to the pattern. However, since the molds on each petal-shaped mold are contact lenses with different degrees, simple cutting cannot be done when cutting the mold runner. If simple cutting is done, the molds with different degrees will fall and mix into the molds with other degrees after cutting. If they are cut one by one and moved to the storage box of the corresponding degree each time they are cut, it will be extremely cumbersome and complicated, and it will be difficult to automate.

[0006] Therefore, a convenient and fast rod removal device is needed, which can quickly remove the runner rod, quickly classify contact lens molds of different degrees, and quickly discharge the runner. Utility Model Content

[0007] In order to solve the above problems, this paper proposes a positioning and stripping machine for a petal-type mold. The positioning and stripping machine is arranged below a lower press machine, a petal-type mold is arranged above the positioning and stripping machine, an injection molding seat is arranged in the middle of the petal-type mold, and a positioning groove is arranged at the front end of the injection molding seat. The positioning and stripping machine comprises a support frame, a material dividing arc plate, a positioning tip and a movable support seat. The shape of the support frame is a conical vertical support, a discharge hole is vertically penetrated in the center of the support frame, a plurality of discharge grooves are equidistantly penetrated in a circular manner around the discharge hole, a movable slot is arranged on the inner side of the top of the discharge hole, the outer side of the discharge groove is evenly divided by a material arc plate, the side shape of the movable slot is an oblique slot, the inside of the movable slot is provided with a movable support seat, and the movable support seat and the inner surface of the movable slot are connected by a slide groove A return spring is provided on the inner side between the movable support seat and the movable slot, a supporting bevel is provided on the top of the movable support seat, a positioning tip is vertically provided on the front end of the top of the support frame, and the positioning tip is embedded in the inner side of the positioning slot of the injection molding seat, and the middle part of the dividing arc plate is aligned with the middle part of the discharge slot. By using a one-time downward pressure and the cooperation between the dividing arc plates, all the contact lens molds on the petal-shaped mold can be directly separated at one time, and the waste flow channel can be overall removed through the discharge hole and the discharge slot for subsequent production. The positioning tip can also be used to classify the annular structure that was originally inconvenient to classify, and the contact lens molds can be directly classified and distinguished before the cutting and stripping rod, thereby realizing quick and convenient classification.

[0008] The petal-shaped mold is a split contact lens mold with equidistant annular shapes. An injection molding seat is provided in the center of the petal-shaped mold. A plurality of runner rods are equidistantly provided in a diffused and forked annular shape around the injection molding seat. The outer ends of the runner rods are connected to the contact lens mold. A positioning groove is vertically provided on the front side of the injection molding seat. A conical top clamping groove is provided on the bottom surface of the injection molding seat. The positioning groove is in the shape of an equilateral triangle groove with a sharp angle running through the top and bottom. The angle of the positioning groove is the same as the angle of the positioning tip. The petal-shaped mold can not only be easily distributed on contact lens molds of different degrees, but also the central injection molding seat can assist in positioning support and prevent injection defects during the injection molding process. The diffused runner rods can also facilitate the grabbing and transfer of the automated assembly line. The positioning groove and the clamping groove can not only achieve precise positioning to ensure the accurate distribution of the contact lens mold, but also enable its support and installation to be secure.

[0009] The support frame is in the shape of a vertical conical upright bracket, the curved bevel on the top of the support frame has the same slope and curvature as the positioning groove on the bottom of the injection molding seat, the support frame is divided into several parts by the discharge hole and the discharge groove at equal intervals, and each divided support frame is provided with a right-angled triangular oblique groove on the top, the discharge hole diameter is larger than the diameter of the injection molding seat, the discharge groove diameter is larger than the width of the runner rod of the petal-type mold, the inner bevel of the oblique groove is an arc-shaped edge, the arc-shaped edge of the oblique groove is parallel to the arc-shaped edge on the outside of the support frame, and the arc-shaped edge surface of the oblique groove is connected to the movable support seat through a slide groove, and the divided support frame can conveniently and quickly allow the petal-type mold to be directly dropped, which can ensure that the runner waste is integrated for subsequent recycling and processing, and the conical design can also facilitate the placement and positioning of the petal-type mold.

[0010] The dividing arc plate is an outward-expanding arc plate made of hard metal. A cutting blade is provided on the top of the dividing arc plate. The longitudinal center lines of the dividing guard plates are flush with the runner rods of the petal-shaped mold. The top surface of the dividing guard plates is lower than the top surface of the movable support seat. The dividing arc plate with a cutting blade can not only conveniently guide the cut contact lens mold into the corresponding material frame in a dividing manner, but the cutting blade can also conveniently cut off the runner rod directly by pressing down without the need to set up additional tools.

[0011] The movable support seat is in the shape of an arc-shaped right-angled triangle block. The movable support seat is arranged on the top of each separated support frame. The outer arc surface of the movable support seat is connected to the oblique groove on the inner side of the top of the main support frame through a slide groove. The outer arc surface of the top of the movable support seat fits with the arc surface of the positioning groove of the injection molding seat. The inner side of the movable support seat is connected to the support frame through a reset spring. The reset spring is a compression spring. The jacking support is realized through the movable support seat, thereby ensuring that the petal-type mold can be smoothly set above the dividing arc plate, which is convenient for subsequent downward pressure and cutting. The movable support seat can move obliquely downward due to the downward pressure, thereby realizing an avoidance space, which makes it convenient for the injection molding seat to avoid during the downward pressure process, so as to be smoothly discharged from the bottom of the support frame.

[0012] The positioning tip is in the shape of a vertical triangular column, and the top surface of the positioning tip is higher than the top surface of the movable support. The positioning tip can accurately locate the position of the annular petal-shaped mold, ensuring that the contact lens mold can be positioned for unloading before being placed on the support frame, thereby ensuring the convenience of subsequent unloading.

[0013] The down-pressing machine is a vertical down-pressing machine, which includes a middle pressure head and an outer ring pressure head. The middle pressure head is aligned with the top of the injection molding seat, and the outer ring pressure head is in the shape of a ring. The outer arc of the outer ring pressure head is arranged on the inner side of the annular dividing arc plate. The direct down-pressing machine can conveniently press down vertically, realize the downward pressing and discharging of the injection molding seat and the runner rod, and also give force between the contact lens mold and the runner rod to achieve cutting and separation.

[0014] Beneficial effects:

[0015] By using a one-time downward pressure and the cooperation between the dividing arc plates, all the contact lens molds on the petal-shaped mold can be directly separated at one time, and the waste flow channel can be completely removed through the discharge hole and the discharge trough to facilitate subsequent production. The ring structure that was originally inconvenient to classify can also be directly classified and distinguished by the positioning tip before the cutting and stripping rod, thereby realizing quick and convenient classification.

[0016] The petal-shaped mold can not only be easily distributed on contact lens molds of different degrees, but the central injection seat can also assist in positioning and support, and can also prevent injection defects during the injection process. The diffused runner rods on all sides can also facilitate the grabbing and transfer of the automated assembly line. The positioning grooves and card slots can not only achieve precise positioning to ensure the accurate distribution of the contact lens mold, but also enable its support and installation to be secure.

[0017] The split support frame can make the petal-shaped mold drop materials directly and quickly, and can ensure that the runner waste is integrated for subsequent recycling and processing. The conical design can also facilitate the placement and positioning of the petal-shaped mold.

[0018] The dividing arc plate with the cutting blade can not only conveniently guide the cut contact lens mold into the corresponding material frame in a dividing manner, but the cutting blade can also conveniently cut off the runner rod directly by pressing down, without the need to set up additional tools.

[0019] The movable support seat is used to realize the lifting support, thereby ensuring that the petal-shaped mold can be smoothly set above the dividing arc plate, which is convenient for the subsequent downward pressure and cutting. The movable support seat can move obliquely downward due to the downward pressure, thereby realizing an avoidance space, so that the injection molding seat can avoid it during the downward pressure process, so as to be smoothly discharged from the bottom of the support frame.

[0020] The positioning tip can accurately locate the position of the annular petal-shaped mold, ensuring that the contact lens mold can be positioned for unloading before being placed on the support frame, thereby ensuring that subsequent unloading is convenient.

[0021] The direct downward pressing machine can conveniently press downward vertically to realize the downward pressing and discharging of the injection molding seat and the runner rod, and at the same time, it can also give force between the contact lens mold and the runner rod to achieve cutting and separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a positioning and stripping machine for a petal-shaped mold;

[0023] Figure 2 It is a cross-sectional view of a positioning and stripping machine for a petal-shaped mold;

[0024] Figure 3 It is a partially enlarged cross-sectional view of a positioning and stripping machine for a petal-shaped mold;

[0025] In the figure; 1. support frame, 2. dividing arc plate, 3. positioning tip, 4. contact lens mold, 5. runner rod, 6. injection molding seat, 7. movable support seat, 8. return spring. DETAILED DESCRIPTION

[0026] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0027] Support frame 1, dividing arc plate 2, positioning tip 3, contact lens mold 4, runner rod 5, injection molding seat 6, movable support seat 7, reset spring 8.

[0028] like Figure 1 , 2 , as shown in 3;

[0029] A positioning and stripping machine for a petal-shaped mold, the positioning and stripping machine is arranged below a lower press, a petal-shaped mold is arranged above the positioning and stripping machine, an injection molding seat 6 is arranged in the middle of the petal-shaped mold, a positioning groove is arranged at the front end of the injection molding seat 6, the positioning and stripping machine comprises a support frame 1, a material dividing arc plate 2, a positioning tip 3 and a movable support seat 7, the support frame 1 is in the shape of a conical vertical support, a discharge hole is vertically penetrated in the center of the support frame 1, a plurality of discharge grooves are equidistantly penetrated up and down around the discharge hole, a movable slot is arranged on the inner side of the top of the discharge hole, the outer side of the discharge groove is evenly divided by the material arc plate 2, the side shape of the movable slot is an oblique slot, the inside of the movable slot is provided with a movable support seat 7, the movable support seat 7 and the inner surface of the movable slot are connected by a slide groove The movable support seat 7 and the movable slot are connected, and a return spring 8 is provided on the inner side between the movable support seat 7 and the movable slot for movement. The top of the movable support seat 7 is provided with a supporting bevel. A positioning tip 3 is vertically provided at the front end of the top of the support frame. The positioning tip 3 is embedded in the inner side of the positioning groove of the injection molding seat 6. The middle part of the dividing arc plate 2 is aligned with the middle part of the discharge groove. The petal-shaped mold is a split-type contact lens mold 4 with equal spacing in an annular shape. An injection molding seat 6 is provided in the center of the petal-shaped mold. A plurality of runner rods 5 are provided in an annular shape with equal spacing around the injection molding seat 6. The outer end of the runner rod 5 is connected to the contact lens mold 4. A positioning groove is vertically provided on the front side of the injection molding seat 6. A conical top clamping groove is provided on the bottom surface of the injection molding seat 6. The shape of the positioning groove is a sharp-angled equilateral side that runs through from top to bottom. The angle of the positioning groove is the same as that of the positioning tip 3. The shape of the support frame 1 is a vertical conical vertical bracket. The arc-shaped hypotenuse on the top of the support frame 1 is the same as the slope and curvature of the positioning groove on the bottom of the injection molding seat 6. The support frame 1 is divided into several parts by the discharge hole and the discharge trough at equal intervals. The top of each divided support frame 1 is provided with a right-angled triangular oblique groove. The diameter of the discharge hole is larger than the diameter of the injection molding seat 6, and the diameter of the discharge trough is larger than the width of the runner rod 5 of the petal-type mold. The inner hypotenuse of the oblique groove is an arc-shaped edge, and the arc-shaped edge of the oblique groove is parallel to the arc-shaped edge on the outside of the support frame 1. The arc-shaped edge surface of the oblique groove is connected to the movable support seat 7 through a slide groove. The dividing arc plate 2 is an outward-expanding arc plate, and the material of the dividing arc plate 2 is hard. The material of the mold is made of high-quality metal. A cutting blade is provided on the top of the dividing arc plate 2. The longitudinal center line of the dividing guard plate is flush with the runner rod 5 of the petal-shaped mold. The top surface of the dividing guard plate is lower than the top surface of the movable support seat 7. The movable support seat 7 is in the shape of an arc-shaped right-angled triangle block. The movable support seat 7 is arranged on the top of each separated support frame 1. The outer arc surface of the movable support seat 7 is connected to the oblique groove on the inner side of the top of the main support frame through a slide groove. The outer arc surface of the top of the movable support seat 7 fits with the arc surface of the positioning groove of the injection molding seat 6. The inner side of the movable support seat 7 is connected to the support frame 1 through a reset spring 8. The reset spring is a compression spring. The shape of the positioning tip 3 is a vertical triangular column. The top surface of the positioning tip 3 is higher than the top surface of the movable support seat 7. The down press is a vertical down press, and the down press includes a middle pressure head and an outer ring pressure head.The middle pressure head is aligned with the top of the injection seat 6, and the outer ring pressure head is in the shape of a ring, and the outer arc of the outer ring pressure head is arranged on the inner side of the annular dividing arc plate 2.

[0030] Implementation examples;

[0031] When in use, the petal-shaped mold is placed on top of the support frame 1 from the back to the front, the positioning groove of the injection molding seat 6 is inserted into the positioning tip 3, and each contact lens mold 4 is set on different material dividing arc plates 2 according to different degrees. Then the injection molding seat 6 is put down, and the positioning groove at the bottom of the injection molding seat 6 and the arc on the outer side of the top of the movable support seat 7 support each other, thereby completing the arrangement work before removing the rod.

[0032] After that, it is only necessary to press down the pressing machine to press the injection molding seat 6 and the runner rod 5 downward together. At this time, the runner rod 5 on the outside of the contact lens mold 4 is cut off by the cutting edge at the top of the dividing arc plate 2, thereby realizing the rod removal operation of the contact lens mold 4, and the contact lens mold 4 enters the storage basket along the dividing arc plate 2. The injection molding seat 6 squeezes the movable support seat 7 downward during the pressing process, so that the inward inclined groove of the movable support seat 7 moves to make the movable support seat 7 shrink, thereby releasing the support of the movable support seat 7 for the injection molding seat 6, and it can fall smoothly, and the remaining injection molding seat 6 and runner rod 5 are discharged downward from the discharge hole and discharge trough of the support frame 1 together to obtain a complete injection molding waste.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning and stripping machine for a petal-shaped mold, the positioning and stripping machine is arranged below a lower press, a petal-shaped mold is arranged above the positioning and stripping machine, an injection molding seat is arranged in the middle of the petal-shaped mold, and a positioning groove is arranged at the front end of the injection molding seat, It is characterized in that The positioning and stripping machine includes a support frame, a material dividing arc plate, a positioning tip and a movable support seat. The support frame is in the shape of a conical vertical support. A discharge hole is vertically penetrated in the center of the support frame. A plurality of discharge troughs are equidistantly penetrated in a circular manner around the discharge hole. A movable slot is provided on the inner side of the top of the discharge hole. The outer side of the discharge trough is evenly divided by a material dividing arc plate. The side edges of the movable slot are in the shape of an oblique slot. A movable support seat is provided inside the movable slot. The movable support seat and the inner surface of the movable slot are connected by a slide slot. A reset spring is provided on the inner side between the movable support seat and the movable slot. A supporting bevel is provided on the top of the movable support seat. A positioning tip is vertically provided at the front end of the top of the support frame. The positioning tip is embedded in the inner side of the positioning slot of the injection molding seat. The middle part of the material dividing arc plate is aligned with the middle part of the discharge trough.

2. A positioning and stripping machine for a petal-shaped mold according to claim 1, It is characterized in that The petal-shaped mold is a split contact lens mold with equidistant annular surfaces. An injection molding seat is provided in the center of the petal-shaped mold. A plurality of runner rods are provided in equidistant annular surfaces around the injection molding seat. The outer ends of the runner rods are connected to the contact lens mold. A positioning groove is vertically provided on the front side of the injection molding seat. A conical top clamping groove is provided on the bottom surface of the injection molding seat. The positioning groove is in the shape of a sharp-angled equilateral triangular groove that runs through the top and bottom. The angle of the positioning groove is the same as the angle of the positioning tip.

3. A positioning and stripping machine for a petal-shaped mold according to claim 2, It is characterized in that The support frame is in the shape of a vertical conical upright bracket, the arc-shaped hypotenuse on the top of the support frame has the same inclination and curvature as the positioning groove on the bottom of the injection molding seat, the support frame is divided into several parts by the discharge hole and the discharge groove at equal intervals, and the top of each divided support frame is provided with a right-angled triangular oblique groove, the diameter of the discharge hole is larger than the diameter of the injection molding seat, the diameter of the discharge groove is larger than the width of the runner rod of the petal-type mold, the inner hypotenuse of the oblique groove is an arc-shaped edge, the arc-shaped edge of the oblique groove is parallel to the arc-shaped edge of the outer side of the support frame, and the arc-shaped edge surface of the oblique groove is connected to the movable support seat through a slide groove.

4. A positioning and stripping machine for a petal-shaped mold according to claim 2, It is characterized in that The dividing arc plate is an outward-expanding arc plate made of hard metal, with a cutting blade at the top. The longitudinal center line of the dividing guard plate is flush with the runner rod of the petal-shaped mold, and the top surface of the dividing guard plate is lower than the top surface of the movable support seat.

5. A positioning and stripping machine for a petal-shaped mold according to claim 3, It is characterized in that The movable support seat is shaped like an arc-shaped right-angled triangle block. The movable support seat is arranged on the top of each cut support frame. The outer arc surface of the movable support seat is connected to the oblique groove on the inner side of the top of the main support frame through a slide groove. The outer arc surface of the top end of the movable support seat is in contact with the arc surface of the positioning groove of the injection molding seat. The inner side of the movable support seat is connected to the support frame through a reset spring, and the reset spring is a compression spring.

6. A positioning and stripping machine for a petal-shaped mold according to claim 1, It is characterized in that The positioning tip is in the shape of a vertical triangular column, and the top surface of the positioning tip is higher than the top surface of the movable support seat.

7. A positioning and stripping machine for a petal-shaped mold according to claim 1, It is characterized in that The down press is a vertical down press, which includes a middle pressure head and an outer ring pressure head. The middle pressure head is aligned with the top of the injection molding seat, and the outer ring pressure head is annular in shape. The outer arc of the outer ring pressure head is arranged on the inner side of the annular material dividing arc plate.

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