Parting secondary ejection mechanism of handle ring injection mold

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By using a secondary ejection mechanism for the injection mold of the handle ring, the straight handle section and the annular section of the handle ring are ejected once and twice respectively, which solves the problems of high ejection cost and parting line in the existing injection molding technology, and achieves the guarantee of appearance quality of electroplated surface and cost reduction.

CN223763707UActive Publication Date: 2026-01-06CIXI XINTONGDA MOLD

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Patent Information

Application Number: CN202520556064.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-03-27
Publication Date: 2026-01-06
Estimated Expiration: 2035-03-27

AI Technical Summary

Technical Problem

The existing injection molding parting pattern for the handle ring of the mite remover has problems such as high injection molding ejection cost, complex structure, and easy formation of obvious parting lines, which affects the quality of the electroplated surface.

Method used

A two-stage ejection mechanism for the handle ring injection mold is adopted. The first and second oil cylinders respectively realize the first and second ejection of the non-electroplated surface of the straight handle section and the annular section of the handle ring, avoiding the formation of parting lines and ensuring the appearance quality of the electroplated surface.

Benefits of technology

It effectively avoids parting lines on the electroplated surface of the handle ring, reduces product costs, ensures the appearance quality of the electroplated surface, and has a simple structure.

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Abstract

The utility model discloses a parting secondary ejection mechanism for a handle ring injection mold, which is characterized in that a first oil cylinder, an ejector pin and a first sliding block are used for realizing primary ejection of a side surface of a non-electroplating appearance surface of a straight handle section of a handle ring, and a second oil cylinder and a second sliding block are used for realizing secondary ejection of a non-electroplating appearance surface of an annular inner side of the handle ring; the ejection ejector pins and the positioning ejector pins are arranged in parallel in space, the first oil cylinder is in driving connection with the first sliding block through the ejection ejector pins, and the first sliding block is arranged on the multiple positioning ejector pins and can slide in the length direction of pin rods of the multiple positioning ejector pins in a limited mode. The other ends of the positioning ejector pins abut against the side face of the non-electroplating appearance face of the straight handle section of the handle ring connected with the annular inner side face of the handle ring; the second oil cylinder and the second sliding block are arranged on the outer side of the annular outer side face of the handle ring, the rear mold core is arranged on the annular section of the handle ring, and the rear mold core is connected with the second sliding block. Parting lines can be prevented from appearing after the product is subjected to injection molding, mold splitting, demolding and ejection, the appearance quality of the electroplated surface of the product can be effectively guaranteed, and the structure is simple.

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Description

TECHNICAL FIELD

[0001] The utility model relates to a handle ring injection mold, especially a handle ring injection mold parting secondary ejection mechanism for a handle ring component product of a mite removing instrument and the like. BACKGROUND

[0002] For the handle ring component product of a mite removing instrument and the like, the handle ring product after injection molding usually needs to be treated by post-plating process, so as to obtain higher product quality, thus the surface to be treated by plating needs to be kept in good appearance quality after injection molding ejection demolding, and the plating treatment quality or treatment efficiency of the handle ring cannot be affected by the appearance of parting lines. Since the handle ring A1 of the mite removing instrument is a connected combination whole (see Figure 6 、 Figure 7 ) with a straight handle section 01 and a ring section 02 extending and connecting (or an arc section), and the two narrow side surfaces 011 of the straight handle section, the arc outer side surface 021 of the ring section 02 (or the arc section), and the two narrow side surfaces 022 thereof are all plating surfaces to be treated by plating, the injection mold parting mode of the existing mite removing instrument handle ring usually has the following two types, A parting scheme (see Figure 6 ): the ring section inner side of the handle ring is completely undercut and parting ejection, the mold needs to be made very thick and large, a large-tonnage injection molding machine is needed to meet the requirement, the injection molding cost is high, and the two narrow side surfaces of the ring section (or the arc section) after molding ejection have obvious parting lines 025, affecting the plating surface treatment quality of the product, or pre-treatment is needed before plating treatment, resulting in high product cost; B parting scheme: the inner side of the straight handle section and the ring section (or the arc section) of the handle ring is completely undercut and parting ejection, the mold structure is complex, and the ring section (or the arc section) after molding ejection has obvious parting lines 023 on the ring or arc outer side surface 021, affecting the plating surface treatment quality of the product, or pre-treatment is needed before plating treatment, resulting in high product cost. INVENTION CONTENTS

[0003] The utility model provides a handle ring injection mold parting secondary ejection mechanism, which can avoid the appearance of parting lines after product injection molding parting demolding, effectively ensure the appearance quality of the plating surface of the product, has a simple structure, and can reduce the product cost.

[0004] The utility model discloses a specific technical scheme that is adopted for solving the above technical problem is: a handle ring injection mold parting secondary ejection mechanism, its characterized in that: including rear mould, first oil cylinder, locating ejector pin, ejector pin, first slider, ejector pin locating seat, second oil cylinder and second slider, wherein first oil cylinder, ejector pin and first slider are used to realize the one-time ejection of handle ring straight handle section non-electroplating appearance side, and second oil cylinder and second slider are used to realize the secondary ejection of handle ring's annular inside non-electroplating appearance face, ejector pin and locating ejector pin are parallelly arranged in space, first oil cylinder, locating ejector pin, ejector pin and first slider are arranged at the side direction of the non-electroplating appearance side of handle ring straight handle section that is connected with the annular inside face of handle ring, first oil cylinder is driven and is connected first slider through ejector pin, first slider is arranged on a plurality of locating ejector pins and can limit sliding along the needle stem length direction of a plurality of locating ejector pins, and the one end of a plurality of locating ejector pins is connected with the ejector pin locating seat, and the other end of locating ejector pin is all top to the non-electroplating appearance side of handle ring straight handle section that is connected with the annular inside face of handle ring, second oil cylinder drive connects second slider, and second oil cylinder and second slider are arranged at the outside of the annular outside face of handle ring, rear mould is arranged at the annular section of handle ring, and rear mould has the annular rear mould that cooperates with the annular section inside face of handle ring, and rear mould is connected with second slider. Through setting different parting demolding ejection mode to handle ring straight handle section non-electroplating appearance side and the annular section inside face of handle ring respectively, carry out the secondary ejection mechanism of different position, eject the non-electroplating appearance side of straight handle section after ejecting, and then eject the non-electroplating inside face of the annular section of handle ring, effectively guarantee to avoid the electroplating surface of handle ring from being influenced by ejection, can avoid the parting line after product injection molding parting demolding ejection, can effectively guarantee the appearance quality of the electroplating surface of acaridium meter handle ring product, simple structure, can reduce product cost.

[0005] As preferred, the ejector pin locating seat is arranged at the inside of the annular section tail end of handle ring, and is close to the annular rear mould where the annular section is located, the ejector pin locating seat is provided with the ejector pin through hole, the ejector pin tail end is connected with the first oil cylinder drive output end, and the ejector pin front end is connected with the first slider. The positioning and limiting of the ejector pin locating seat to the locating ejector pin and the ejector pin are simple, reliable and effective, and the first slider is simple, reliable and effective to the straight handle section non-electroplating appearance side.

[0006] As preferred, the first slider includes a first slider body and a first slider connecting seat, the first slider body and the first slider connecting seat are connected together, the first slider body and the first slider seat are both provided with the locating ejector pin through hole, the first slider connecting seat is connected together with the ejector pin front end, and the ejector pin tail end is connected with the first oil cylinder drive output end. The first slider is simple and effective to the straight handle section non-electroplating appearance side, and the electroplating appearance side is avoided from appearing the parting line problem.

[0007] As preferred, the second oil cylinder and the second sliding block are arranged at the outside of the annular outer side of the handle ring and are arranged towards the side where the ejector pin positioning seat, the ejector pin and the first oil cylinder are located.

[0008] As preferred, the annular rear mold core is provided with two annular limiting grooves at the annular outer side thereof, the groove lengths of the two annular limiting grooves are parallel to each other and are arranged along the annular direction of the annular outer side, and the two annular limiting grooves are used for limiting and positioning connection with the annular limiting convex lip arranged on the annular inner side of the handle ring.

[0009] The beneficial effects of the utility model are as follows: different parting and demolding ejection modes are arranged on the non-electroplated appearance surface side of the straight handle section of the handle ring and the inner side of the annular section of the handle ring respectively, secondary ejection mechanisms at different positions are arranged, the non-electroplated appearance surface side of the straight handle section is ejected first and then the non-electroplated inner side of the annular section of the handle ring is ejected, the electroplated surface of the handle ring is effectively ensured not to be affected by ejection, the parting line after demolding ejection of the product after injection molding can be avoided, the appearance quality of the electroplated surface of the handle ring of the acarid removing instrument can be effectively ensured, the structure is simple, and the product cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0011] Figure 1 is the structure schematic diagram of the parting secondary ejection mechanism of the handle ring injection mold of the utility model.

[0012] Figure 2 is the structure schematic diagram of the parting secondary ejection mechanism of the handle ring injection mold of the utility model from another direction.

[0013] Figure 3 is the structure schematic diagram of the annular section of the rear mold core in the parting secondary ejection mechanism of the handle ring injection mold of the utility model.

[0014] Figure 4 is the structure schematic diagram of the parting secondary ejection mechanism of the handle ring injection mold of the utility model in the mold part.

[0015] Figure 5 is the structure schematic diagram of the parting secondary ejection mechanism of the handle ring injection mold of the utility model in the mold part.

[0016] Figure 6is a product structure schematic diagram of the handle ring in the prior art after the A parting scheme produces a parting line.

[0017] Figure 7 is a product structure schematic diagram of the handle ring in the prior art after the B parting scheme produces a parting line. DETAILED DESCRIPTION

[0018] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 In the embodiment shown, a handle ring injection mold parting secondary ejection mechanism includes a back mold core 22, a first oil cylinder 10, a positioning ejector pin 13, an ejection ejector pin 11, a first sliding block, an ejector pin positioning seat 12, a second oil cylinder 20, and a second sliding block 21. The first oil cylinder 10, the positioning ejector pin 13, and the first sliding block are used to realize one-time ejection of the non-electroplated appearance side surface 013 of the straight handle section 01 of the handle ring. The second oil cylinder 20 and the second sliding block 21 are used to realize secondary ejection of the non-electroplated appearance surface 024 of the annular inner side of the handle ring. The ejection ejector pin 11 and the positioning ejector pin 13 are installed in parallel in space. The first oil cylinder 10, the positioning ejector pin 13, the ejection ejector pin 11, and the first sliding block are arranged on the side of the non-electroplated appearance surface 013 of the straight handle section of the handle ring A1 connected to the annular inner surface 024 of the handle ring A1. The first oil cylinder 10 is drivingly connected to the first sliding block through the ejection ejector pin 11. The first sliding block is installed and connected to a plurality of positioning ejector pins 13 and can slide along the length direction of the needle rod of the plurality of positioning ejector pins 13. One end of each of the plurality of positioning ejector pins 13 is installed and connected to the ejector pin positioning seat 12. The other end of each of the positioning ejector pins 13 is directed towards the non-electroplated appearance surface 013 of the straight handle section of the handle ring product A1 connected to the annular inner surface 024 of the handle ring A1. The second oil cylinder 20 is drivingly connected to the second sliding block 21. The second oil cylinder 20 and the second sliding block 21 are installed and arranged on the annular outer side of the handle ring. The back mold core 22 is installed on the annular section 02 of the handle ring A1. The back mold core 22 has an annular back mold core 23 matched with the inner surface of the annular section of the handle ring. The back mold core 22 is connected to the second sliding block 21.

[0019] The ejector pin positioning seat 12 is installed at the inner side of the tail end of the ring segment 02 of the handle ring and is close to the annular rear mold core 22 where the ring segment 02 is located. A through hole for ejector pin is formed on the ejector pin positioning seat 12. The tail end of the ejector pin 11 is connected with the driving output end of the first oil cylinder 10 through the through hole for ejector pin. The front end of the ejector pin 11 is connected with the first sliding block. The first sliding block includes a first sliding block body 15 and a first sliding block connecting seat 14. The first sliding block body 15 and the first sliding block connecting seat 14 are connected together. The first sliding block body 15 and the first sliding block connecting seat 14 are both provided with a positioning pin through hole. The first sliding block connecting seat 14 is connected with the front end of the ejector pin 11. The tail end of the ejector pin 11 is connected with the driving output end of the first oil cylinder 10. The first sliding block body 15 is provided with a shaped surface on the sliding block body side which is located on the side of the non-electroplated appearance side 013 of the straight handle segment of the handle ring. The second oil cylinder 20 and the second sliding block 21 are installed at the outer side of the ring outer side 02 of the handle ring and are arranged towards the side where the ejector pin positioning seat 12, the ejector pin 11 and the first oil cylinder 10 are located. The annular rear mold core 23 is provided with two annular limiting grooves 24 at the annular outer side. The groove lengths of the two annular limiting grooves 24 are parallel to each other and are arranged along the annular direction of the annular outer side. The two annular limiting grooves 24 are used for limiting and positioning connection with the annular limiting convex lip arranged on the annular inner side of the handle ring.

[0020] In use, the first oil cylinder 10 drives the first sliding block to separate from the non-electroplated appearance side 013 of the straight handle segment of the handle ring through the ejector pin 11, thereby achieving the first ejection of the handle ring product. The second oil cylinder 20 synchronously drives the second sliding block 21 to move towards the annular outer side of the handle ring, i.e. drives the ring segment 02 of the handle ring to separate from the annular outer side of the annular rear mold core 23, thereby achieving the second ejection of the handle ring product. This can effectively ensure that the electroplated surface appearance quality of the handle ring product does not have the problem of parting line defects. Before the second ejection of the product, the injection mold itself has a molding and parting action: the handle ring product after injection molding is first parted from the mold panel 30 and the mold A plate 40, then the corresponding sliding block is driven by the shovel in the mold to separate from the product, and then the mold A plate 40 and the mold B plate 50 are parted (this can adopt or use the parting of the mold panel and the mold A plate, the parting of the mold A plate 40 and the mold B plate 50 and the technology of driving the corresponding sliding block to separate from the product by the shovel in the prior art, which will not be described in detail here). The mold opening and demolding action of the entire handle ring product can be achieved.

[0021] In the position relation description of the utility model, such as the terms "inner", "outer", "upper", "lower", "left", "right" and the like indicating the orientation or position relation are based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the embodiments and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0022] The above content and structure describe the basic principle, main features and advantages of the utility model product, which should be understood by the skilled in the art. The above examples and descriptions in the specification are only illustrative of the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all belong to the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A parting secondary ejection mechanism for a handle ring injection mold, characterized in that: The back mould core, the first oil cylinder, the positioning ejector pin, the ejector pin, the first sliding block, the ejector pin positioning seat, the second oil cylinder and the second sliding block are used to realize the first ejection of the non-electroplated appearance surface side of the straight handle section of the handle ring, and the second oil cylinder and the second sliding block are used to realize the second ejection of the non-electroplated appearance surface of the inner side of the handle ring; the ejector pin and the positioning ejector pin are arranged in parallel in space, the first oil cylinder, the positioning ejector pin, the ejector pin and the first sliding block are arranged on the side of the non-electroplated appearance surface side of the straight handle section of the handle ring connected with the inner side of the handle ring, the first oil cylinder is drivenly connected with the first sliding block through the ejector pin, the first sliding block is arranged on the plurality of positioning ejector pins and can slide along the needle rod length direction of the plurality of positioning ejector pins, one end of the plurality of positioning ejector pins is connected with the ejector pin positioning seat, and the other end of the positioning ejector pin is arranged on the ejector pin positioning seat and is arranged on the non-electroplated appearance surface side of the straight handle section of the handle ring connected with the inner side of the handle ring.

2. The parting secondary ejection mechanism for a handle loop injection mold according to claim 1, characterized in that: The ejector pin positioning seat is arranged on the inner side of the tail end of the ring section of the handle ring and is close to the ring-shaped rear mould core, the ejector pin positioning seat is provided with an ejector pin through hole, the ejector pin is connected with the first oil cylinder drive output end, and the ejector pin is connected with the first sliding block.

3. The parting secondary ejection mechanism for a handle loop injection mold according to claim 1, characterized in that: The first sliding block comprises a first sliding block body and a first sliding block connecting seat, the first sliding block body and the first sliding block connecting seat are connected together, the first sliding block body and the first sliding block connecting seat are provided with positioning ejector pin through holes, the first sliding block connecting seat is connected with the front end of the ejector pin, and the tail end of the ejector pin is connected with the first oil cylinder drive output end.

4. The parting secondary ejection mechanism for a handle loop injection mold according to claim 1, characterized in that: The second oil cylinder and the second sliding block are arranged on the outer side of the outer side of the ring section of the handle ring and are arranged on the side of the ejector pin positioning seat, the ejector pin and the first oil cylinder.

5. The parting secondary ejection mechanism for a handle loop injection mold according to claim 1 or 2, characterized in that: The ring-shaped rear mould core is provided with two ring-shaped limiting grooves at the outer side of the ring-shaped outer side, the groove lengths of the two ring-shaped limiting grooves are parallel to each other and are arranged along the ring-shaped direction of the ring-shaped outer side, and the two ring-shaped limiting grooves are used for limiting and positioning connection with the ring-shaped limiting lip arranged on the inner side of the handle ring.