An injection mold for molding loose-part plastic lettering products

Abstract

This application relates to an injection mold for molding loose lettering plastic products, comprising: a lower mold, which includes a male mold frame, a male mold core and a slider at the top of the male mold frame, the slider being slidably connected to the male mold frame, and forming multiple injection gate channels when the slider is in contact with the male mold core; and an upper mold, which includes a female mold frame located at the top of the male mold frame, a female mold core and a downward pressure slope at the bottom of the female mold frame driving the slider to slide towards the male mold core, the male mold core, the female mold core and / or the slider together forming multiple loose part molding cavities and / or flow channels; the flow channels extend along the length direction of the male mold core and communicate with the multiple injection gate channels, the multiple loose part molding cavities are arranged sequentially at intervals along the length direction of the male mold core and their bottoms are connected to the multiple injection gate channels one by one. The injection mold can injection mold multiple injection molded parts at one time, and the multiple injection molded parts are connected to each other to form a whole, solving the problem of separate injection molding and electroplating of loose letters.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molds, in particular to an injection mold for forming a plastic product with scattered characters. BACKGROUND

[0002] More and more electroplated or painted character products are used on automobile plastic products. Figure 1 For a certain character LOGO product, the front surface of the character a is processed by electroplating, and the back surface of the character a is provided with a welding rib b, which is assembled with other parts. As can be seen from the figure, the product set includes eight characters in a scattered state. How to ensure stable injection molding production and electroplating production of such products is the subject of our study.

[0003] In related art, the conventional production process of such products is to develop a set of injection molds for each character respectively, and to electroplate each character one by one. This scheme has simple mold structure, small mold size, low cost of single mold, and simple electroplating process.

[0004] However, the above technical scheme has the following technical problems:

[0005] 1. High cost of injection tooling: multiple molds need to be developed, the cumulative cost of tooling is high, and the production organization is complicated.

[0006] 2. Difficulty in controlling injection precision: the volume of a single character is too small, and the product consumes too little raw material during injection molding, which belongs to precision injection molding. It is difficult to control the gram weight and precision of the injection molded product using conventional automobile product injection molding equipment.

[0007] 3. Low electroplating process efficiency: multiple small characters are electroplated separately, resulting in low electroplating efficiency.

[0008] 4. Poor electroplating consistency: multiple characters are electroplated separately, making it difficult to ensure uniform consistency of the plating layer of each electroplated character.

[0009] 5. High risk of secondary quality: after electroplating a single character, the scattered characters are mixed together after packaging, which is easy to scratch the surface of the product and cause secondary quality defects. SUMMARY

[0010] The injection mold for forming a plastic product with scattered characters provided by the embodiments of the present application solves the problem of multiple molds needed for character products in related art, high cumulative cost of tooling, and complicated production organization.

[0011] The injection mold for forming a plastic product with scattered characters provided by the embodiments of the present application includes:

[0012] a lower mold, the lower mold comprising a male mold frame, the top of the male mold frame being provided with a male mold core and a slider, the slider being in sliding connection with the male mold frame and moving in the direction of approaching or moving away from the male mold core, and when the slider is attached to the male mold core, a plurality of glue port channels are formed between them;

[0013] an upper mold, the upper mold comprising a female mold frame located at the top of the male mold frame, the bottom of the female mold frame being provided with a female mold core and a downward slope surface for sliding the slider towards the male mold core, the male mold core, the female mold core and / or the slider collectively forming a plurality of part forming cavities and / or shunt flow channels;

[0014] The shunt flow channels extend along the length direction of the male mold core and communicate with the plurality of glue port channels, and the plurality of part forming cavities are arranged in sequence along the length direction of the male mold core and the bottom of each part forming cavity corresponds to one of the plurality of glue port channels.

[0015] In some embodiments: the female mold frame and the female mold core are further provided with a main flow channel in communication with the shunt flow channel, the slider comprises a left slider and a right slider located on both sides of the male mold core, and the left slider and the right slider each form a plurality of glue port channels with the male mold core;

[0016] The left slider, the male mold core and the female mold core collectively form the shunt flow channel and the plurality of part forming cavities, and the right slider, the male mold core and the female mold core collectively form the shunt flow channel and the plurality of part forming cavities.

[0017] In some embodiments: the shunt flow channel comprises a transverse section located at the top of the male mold core and a longitudinal section located below the sidewall of the male mold core, the position of the longitudinal section being lower than that of the transverse section, and the sidewall of the male mold core is provided with a vertical section in communication with the transverse section and the longitudinal section, and the longitudinal section communicates with the plurality of glue port channels.

[0018] In some embodiments: the position of the transverse section is flush with the position of the plurality of part forming cavities, and the plurality of glue port channels are connected between the plurality of part forming cavities and the longitudinal section;

[0019] The plurality of glue port channels each have an "L" shape structure, and the bottom of each of the plurality of part forming cavities is provided with a glue inlet in communication with the glue port channel, and the hole diameter of the glue inlet is smaller than that of the glue port channel.

[0020] In some embodiments: the male mold frame and the male mold core are provided with a first vertical pin hole in communication with the transverse section and a plurality of second vertical pin holes arranged at intervals in communication with the longitudinal section, and the first vertical pin hole and the second vertical pin hole are each provided with a ejector pin for ejecting an injection molded letter semi-finished material piece upward.

[0021] In some embodiments: the top of the male mold frame is further provided with a sliding surface in sliding connection with the bottom of the slider and a stop surface for limiting the sliding of the slider in the direction away from the male mold core.

[0022] The slider is provided with an elastic member near one end of the male die stem, which is connected with the male die stem and drives the slider to slide away from the male die stem;

[0023] The other end of the slider away from the male die stem is provided with a guide slope surface parallel to the pressing slope surface and slidingly connected therewith, and a limiting surface parallel to the stop surface.

[0024] In some embodiments: the maximum gap between the stop surface and the limiting surface is greater than the required space width for the injection-molded letter semi-finished material piece to separate from the male die stem after the slider retreats.

[0025] In some embodiments: the elastic member is a spiral spring, and a plurality of elastic members are provided and arranged in sequence along the length direction of the male die stem.

[0026] In some embodiments: the bottom of the female die frame is fixedly provided with an inclined guide column, and the axis direction of the inclined guide column is parallel to the direction of the pressing slope surface.

[0027] The top of the slider is provided with a guide hole penetrating the inclined guide column and slidingly connected with the inclined guide column.

[0028] In some embodiments: an electroplating protection angle cavity is formed between the male die stem and the female die stem, and the electroplating protection angle cavity is communicated with the end of the shunt flow channel through the glue port channel.

[0029] The technical scheme provided by the present application has the beneficial effects of:

[0030] The injection mold for forming a loose-piece letter plastic product provided by the embodiments of the present application is provided with a lower mold, which includes a male die frame, a male die stem and a slider are arranged on the top of the male die frame, the slider is slidingly connected with the male die frame and moves in the direction of approaching or moving away from the male die stem, when the slider is attached to the male die stem, a plurality of glue port channels are formed between the slider and the male die stem; an upper mold, which includes a female die frame located on the top of the male die frame, a female die stem and a pressing slope surface for driving the slider to slide in the direction of the male die stem are arranged on the bottom of the female die frame, the male die stem, the female die stem and / or the slider jointly form a plurality of loose-piece forming cavities and / or shunt flow channels; the shunt flow channel extends along the length direction of the male die stem and is communicated with the plurality of glue port channels, and the plurality of loose-piece forming cavities are arranged in sequence along the length direction of the male die stem and the bottoms thereof are communicated with the plurality of glue port channels one by one.

[0031] Therefore, when the sliding block is attached to the male mold core, a plurality of glue port channels are formed between the sliding block and the male mold core, and when the male mold core, the female mold core and the sliding block are attached to each other, a plurality of loose piece forming cavities and a shunt flow channel are formed between the male mold core, the female mold core and the sliding block; the shunt flow channel extends along the length direction of the male mold core and communicates with the plurality of glue port channels, and the plurality of loose piece forming cavities are arranged in sequence along the length direction of the male mold core and the bottoms thereof communicate with the plurality of glue port channels one by one. A plurality of injection molded parts can be integrated on a set of molds for one-time injection molding production, reducing the number of molds and effectively reducing the investment in mold cost. The injection mold can one-time injection molding of a plurality of injection molded parts, and the plurality of injection molded parts are connected to each other to form a whole, solving the problem of loose piece letter injection molding and electroplating production, one-time realizing the whole injection molding production process and electroplating process of all letter mark products, improving the production efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 The structure diagram of the letter mark product in the background art;

[0034] Figure 2 The structure diagram of the injection mold of the embodiment of the present application;

[0035] Figure 3 The structure diagram of the injection letter semi-finished material part of the embodiment of the present application; Figure 2 The sectional view along the A-A direction in the closed mold state;

[0036] Figure 4 The structure diagram of the injection letter semi-finished material part of the embodiment of the present application; Figure 3 The enlarged view of the M part in the embodiment of the present application;

[0037] Figure 5 The sectional view along the A-A direction in the open mold state; Figure 2 The sectional view along the A-A direction in the open mold state;

[0038] Figure 6 The structure diagram of the injection letter semi-finished material part of the embodiment of the present application;

[0039] Reference signs:

[0040] 1, female mold frame; 2, cavity for molding of loose parts; 3, female mold core; 4, main flow channel; 5, sub-flow channel; 6, glue port channel; 6-1, right slider; 6-2, left slider; 7, inclined guide pillar; 8, downward slope; 9, male mold frame; 10, stop surface; 11, sliding surface; 12, male mold core; 13, glue inlet; 14-1, first vertical pinhole; 14-2, second vertical pinhole; 15, elastic member; a, character mark; b, welding rib; c, injection molded part; d, glue of main flow channel; e, glue of horizontal section; f, glue of longitudinal section; g, glue of glue port channel; h, electroplating protection corner; i, flow channel condensate. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] The injection mold for molding of a character mark plastic product of loose parts provided in the embodiments of the present application can solve the problems of high cumulative cost of tooling and complicated production organization in the related art that multiple sets of molds need to be developed for a character mark product of loose parts.

[0043] Referring to Figures 2 to 6 The injection mold for molding of a character mark plastic product of loose parts provided in the embodiments of the present application can solve the problems of high cumulative cost of tooling and complicated production organization in the related art that multiple sets of molds need to be developed for a character mark product of loose parts.

[0044] The lower mold includes the male mold frame 9, and the male mold core 12 and the slider are arranged on the top of the male mold frame 9, wherein the male mold core 12 is fixedly connected with the male mold frame 9, and the slider is slidably connected with the male mold frame 9, and the slider moves in the direction of approaching or moving away from the male mold core 12, and when the slider is attached to the male mold core 12, the multiple glue port channels 6 are formed between the slider and the male mold core 12, and the multiple glue port channels 6 are used for injecting glue into the multiple cavity for molding of loose parts 2 to injection mold the injection molded part c.

[0045] The upper mold includes the female mold frame 1 arranged on the top of the male mold frame 9, and the female mold core 3 and the downward slope 8 for driving the slider to slide in the direction of the male mold core 12 are arranged on the bottom of the female mold frame 1. The female mold core 3 is located directly above the male mold core 12 and parallel to each other, and the male mold core 12, the female mold core 3, and the slider jointly form the multiple cavity for molding of loose parts 2 and the sub-flow channel 5 when they are attached to each other. The cavity for molding of loose parts 2 is used for molding the injection molded part c, and the sub-flow channel 5 is used for injecting glue into the multiple glue port channels 6.

[0046] The shunt flow channel 5 extends along the length direction of the male die stem 12 and communicates with the plurality of glue port channels 6. The plurality of component forming cavities 2 are arranged in sequence and in intervals along the length direction of the male die stem 12 at the top of the male die stem 12, and the bottoms of the plurality of component forming cavities 2 correspond to the plurality of glue port channels 6 in one-to-one correspondence. After the upper die and the lower die are closed, the glue in the molten state enters the shunt flow channel 5, passes through the shunt flow channel 5 from the bottom of the slider, and penetrates in the length direction of the entire injection mold, together with the injection molded part c to form a frame structure.

[0047] With the continuous entry of the glue in the molten state, the glue enters the component forming cavity 2 where each injection molded part c is located along the shunt flow channel 5 of the slider bottom and through the plurality of glue port channels 6. Finally, after the glue cools, each component forming cavity 2 forms an injection molded letter semi-finished material part.

[0048] The injection mold for forming the component letter plastic product of the embodiment of the application forms a plurality of glue port channels 6 between the slider and the male die stem 12 when the slider is attached to the male die stem 12, and forms a plurality of component forming cavities 2 and a shunt flow channel 5 between the male die stem 12, the female die stem 3 and the slider when the male die stem 12, the female die stem 3 and the slider are attached to each other. The shunt flow channel 5 extends along the length direction of the male die stem 12 and communicates with the plurality of glue port channels 6. The plurality of component forming cavities 2 are arranged in sequence and in intervals along the length direction of the male die stem 12 and the bottoms thereof correspond to the plurality of glue port channels 6 in one-to-one correspondence.

[0049] The plurality of injection molded parts c can be integrated into a set of molds for one-time injection molding production, reducing the number of molds and effectively reducing the investment in mold cost. The injection mold can one-time injection molding form a plurality of injection molded parts c, and the plurality of injection molded parts c are connected to each other to form a whole, solving the problem of separate injection molding production and electroplating production of the component letters, one-time realizing the whole injection molding production process and electroplating process of all letter products, and improving the production efficiency and product quality.

[0050] In some optional embodiments, referring to Figures 2 to 6 As shown in the figure, the embodiment of the application provides an injection mold for forming a component letter plastic product, and the female die frame 1 and the female die stem 3 are further provided with a main flow channel 4 communicating with the shunt flow channel 5, and the main flow channel 4 communicates with the shunt flow channel 5 in a vertical direction. The slider includes a left slider 6-2 and a right slider 6-1 located on both sides of the male die stem 12, and the left slider 6-2 and the right slider 6-1 form a plurality of glue port channels 6 with the male die stem 12.

[0051] The left slider 6-2, the male die stem 12 and the female die stem 3 jointly form the branch flow channel 5 and the plurality of loose piece forming cavities 2, and the right slider 6-1, the male die stem 12 and the female die stem 3 also jointly form the branch flow channel 5 and the plurality of loose piece forming cavities 2. The injection mold is arranged according to a 1x2 process scheme, that is, one injection molding production cycle, and two groups of plastic semi-finished products can be produced at the same time, and the two groups of plastic semi-finished products form Figure 6 the middle injection molded letter semi-finished material piece.

[0052] The injection mold is used for injection molding by feeding glue from the middle main flow channel 4, the main flow channel 4 is communicated with the branch flow channel 5 and feeds glue to the branch flow channel 5 for injection molding, the branch flow channel 5 is communicated with the plurality of glue port channels 6 and feeds glue to the plurality of glue port channels 6 for injection molding, the plurality of glue port channels 6 are communicated with the plurality of loose piece forming cavities 2 one by one and feed glue to the plurality of loose piece forming cavities 2 for injection molding, and finally form an integral injection molded letter semi-finished material piece.

[0053] In some optional embodiments, referring to Figures 2 to 6 the injection mold for forming a loose piece letter plastic product, the branch flow channel 5 of the injection mold includes a horizontal section located at the top of the male die stem 12 and a vertical section located below the side wall of the male die stem 12, the vertical section is located at a lower height than the horizontal section, the side wall of the male die stem 12 is provided with a vertical section communicated with the horizontal section and the vertical section, and the vertical section is communicated with the plurality of glue port channels 6.

[0054] The middle part of the horizontal section is communicated with the main flow channel 4, and the glue fed from the main flow channel 4 enters the horizontal section and is respectively fed to two injection paths, one of which is communicated with the vertical section on the left side of the male die stem 12 and then enters the vertical section on the left side of the male die stem 12, and the vertical section on the left side injects the glue into the plurality of glue port channels 6 on the left side and the plurality of loose piece forming cavities 2 on the left side. The other is communicated with the vertical section on the right side of the male die stem 12 and then enters the vertical section on the right side of the male die stem 12, and the vertical section on the right side injects the glue into the plurality of glue port channels 6 on the right side and the plurality of loose piece forming cavities 2 on the right side. Finally, the glue cools down, and each cavity jointly forms an injection molded letter semi-finished material piece.

[0055] The horizontal section is located at a height equal to the height of the plurality of loose piece forming cavities 2, and the plurality of glue port channels 6 are connected between the plurality of loose piece forming cavities 2 and the vertical section. The plurality of glue port channels 6 are all in an "L" shape structure, the bottom of the plurality of loose piece forming cavities 2 is provided with a glue inlet 13 communicated with the glue port channel 6, and the hole diameter of the glue inlet 13 is smaller than the hole diameter of the glue port channel 6.

[0056] The glue inlet 13 is arranged on the back of the muscle piece of the loose piece forming cavity 2, and the width of the glue inlet 13 and the width h of the muscle piece are about 0.8 mm, and the width L of the glue port channel 6 must be greater than the width h of the glue inlet 13 and must be provided with a right-angled bend to facilitate the glue to buffer and reduce the injection speed at the right-angled bend, such asFigure 4 As shown by the curved arrow, the high-speed melt is prevented from directly impacting the cavity of the loose piece, thereby avoiding the formation of gate air marks on the surface of the product.

[0057] In some alternative embodiments, referring to Figures 2 to 6 As shown, the embodiment of the present application provides an injection mold for forming a loose piece letter mark plastic product. The male mold frame 9 and the male mold core 12 are provided with a first vertical pin hole 14-1 communicating with the transverse section and a plurality of second vertical pin holes 14-2 spaced apart and communicating with the longitudinal section. The first vertical pin hole 14-1 and the second vertical pin hole 14-2 are each provided with a ejector pin for ejecting an injection letter semi-finished material piece upward.

[0058] The top of the male mold frame 9 is further provided with a sliding surface 11 slidingly connected with the bottom of the left sliding block 6-2 and the right sliding block 6-1, and a stop surface 10 limiting the sliding of the left sliding block 6-2 and the right sliding block 6-1 away from the male mold core 12. The end of the left sliding block 6-2 and the right sliding block 6-1 close to the male mold core 12 is provided with an elastic member 15 connected with the male mold core 12 and driving the left sliding block 6-2 and the right sliding block 6-1 to slide away from the male mold core 12.

[0059] The end of the left sliding block 6-2 and the right sliding block 6-1 away from the male mold core 12 is provided with a guide slope surface parallel to the downward slope surface 8 and slidingly connected therewith, and a limiting surface parallel to the stop surface 10. When the female mold frame 1 drives the female mold core 3 to move towards the male mold core 12, the downward slope surface 8 and the guide slope surface of the left sliding block 6-2 and the right sliding block 6-1 cooperate to drive the left sliding block 6-2 and the right sliding block 6-1 to move towards the male mold core 12. At this time, the elastic member 15 is compressed to store energy, and the width between the stop surface 10 and the limiting surface gradually increases.

[0060] When the female mold frame 1 drives the female mold core 3 to move away from the male mold core 12, the left sliding block 6-2 and the right sliding block 6-1 are driven to move away from the male mold core 12 under the elastic potential energy release of the elastic member 15, until the limiting surface of the left sliding block 6-2 and the right sliding block 6-1 abuts against the stop surface 10. The maximum gap m between the stop surface 10 and the limiting surface is greater than the required space width n for the injection letter semi-finished material piece to separate from the male mold core 12 after the left sliding block 6-2 and the right sliding block 6-1 retreat to the stop surface 10. When the left sliding block 6-2 and the right sliding block 6-1 retreat to the stop surface 10, the injection letter semi-finished material piece can be easily taken out of the injection mold.

[0061] The elastic members 15 are preferably, but not limited to, helical springs. The elastic members 15 are provided in plurality and are arranged in sequence and at intervals along the length direction of the male die core 12 to elastically support the left slider 6-2 and the right slider 6-1 to move away from the male die core 12. Two inclined guide posts 7 are fixedly arranged at the bottom of the female die frame 1, and the axis direction of the inclined guide posts 7 is parallel to the direction of the downward inclined surface 8. The top of the left slider 6-2 and the right slider 6-1 is provided with a guide hole penetrating into the inclined guide post 7 and in sliding connection with the inclined guide post 7. The inclined guide post 7 provides guidance for the left slider 6-2 and the right slider 6-1 to move towards and away from the male die core 12.

[0062] As shown in Figure 5 : After the injection molding of the injection molded letter semi-finished material piece is completed, the female die frame 1 drives the female die core 3 to open. At this time, the inclined guide posts 7 fixed to the female die frame 1 drive the left slider 6-2 and the right slider 6-1 to horizontally move to the left and right sides. At this time, the elastic members 15 in the left slider 6-2 and the right slider 6-1 also push the left slider 6-2 and the right slider 6-1 to slide away from the male die core 12 due to elastic recovery. The left slider 6-2 and the right slider 6-1 retreat to the position of the stop surface 10 and are fixedly arranged. The product and the out-mold space of the flow distribution channel 5 are withdrawn, and the ejector pin fixed to the lower die is driven by the ejection force of the injection molding machine to upwardly eject the injection molded letter semi-finished material piece. The mechanical hand is convenient for grabbing the injection molded letter semi-finished material piece. At this time, one injection molding production cycle is completed.

[0063] In some optional embodiments, as shown in Figures 2 to 6 , the present application provides an injection mold for forming a loose piece letter plastic product. The injection mold is provided with a plating protection angle cavity between the male die core 12 and the female die core 3. The plating protection angle cavity is in communication with the end of the flow distribution channel 5 through the glue port channel 6. The plating protection angle cavity is used to form a plating protection angle h at the end of the injection molded letter semi-finished material piece. The plating protection angle h is beneficial to avoid poor plating defects at the end of the product and protect the product from being bumped.

[0064] As shown in Figure 6 , the injection molded letter semi-finished material piece includes two groups of injection molded pieces c arranged side by side. The bottom of each injection molded piece c is connected with a glue port channel glue body g. The glue port channel glue body g is connected with a longitudinal section glue body f. The longitudinal section glue body f is connected with a vertical flow channel glue body through a vertical flow channel glue body. The vertical flow channel glue body is connected with a horizontal section glue body e. The horizontal section glue body e is connected with a main flow channel glue body d. The longitudinal section glue body f is connected with a plating protection angle h at both ends. The longitudinal section glue body f is connected with a flow channel coagulum i at the bottom. The flow channel coagulum i is used to cooperate with the ejector pin to eject the injection molded letter semi-finished material piece.

[0065] Working principle

[0066] The embodiment of the present application provides a kind of injection mold of letter-mark plastic product forming of loose parts, since the injection mold of letter-mark plastic product forming of loose parts of the present application is provided with lower mould, the lower mould includes male mould frame 9, male mould frame 9 top is equipped with male mould 12 and slider, slider is slidably connected with male mould frame 9, and it moves in the direction of approaching or away from male mould 12, when slider is attached to male mould 12, multiple glue port passages 6 are formed between slider and male mould 12.

[0067] Upper mould, the upper mould includes female mould frame 1 located in the top of male mould frame 9, the bottom of female mould frame 1 is equipped with female mould 3 and the lower pressing slope 8 of slider driving in the direction of male mould 12, male mould 12, female mould 3 and / or slider jointly form multiple loose parts forming cavities 2 and / or shunt flow passages 5;Shunt flow passage 5 extends along the length direction of male mould 12 and is communicated with multiple glue port passages 6, and multiple loose parts forming cavities 2 are sequentially arranged in the length direction of male mould 12 and are communicated with multiple glue port passages 6 one by one in bottom.

[0068] Therefore, the injection mold of letter-mark plastic product forming of loose parts of the present application when slider is attached to male mould 12, multiple glue port passages 6 are formed between slider and male mould 12, when male mould 12, female mould 3 and slider are attached to each other, male mould 12, female mould 3 and slider jointly form multiple loose parts forming cavities 2 and shunt flow passages 5;Shunt flow passage 5 extends along the length direction of male mould 12 and is communicated with multiple glue port passages 6, and multiple loose parts forming cavities 2 are sequentially arranged in the length direction of male mould 12 and are communicated with multiple glue port passages 6 one by one in bottom.

[0069] Multiple injection molded parts c of the present application can be integrated into a set of mold for one-time injection molding production, reduce the number of mould, effectively reduce the investment of mould cost.The injection mold can be one-time injection molding multiple injection molded parts c, and multiple injection molded parts c are connected into a whole, solve the trouble of loose parts letter respectively injection molding production and electroplating production, one-time realization of the whole injection molding production process and electroplating process of all letter-mark products, improve production efficiency and product quality.

[0070] In the description of the present application, it should be noted that the terms "upper", "lower", and the like are used for indicating the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0071] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0072] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. An injection mold for molding loose-part plastic lettering products, characterized in that, The injection mold for forming the plastic product with the character label and the separated parts comprises: a lower mold, which comprises a male mold frame (9), a top of the male mold frame (9) is provided with a male mold core (12) and a slider, the slider is in sliding connection with the male mold frame (9) and moves in the direction of approaching or moving away from the male mold core (12), when the slider is attached to the male mold core (12), a plurality of glue port channels (6) are formed between the slider and the male mold core (12); an upper mold, which comprises a female mold frame (1) located on the top of the male mold frame (9), a bottom of the female mold frame (1) is provided with a female mold core (3) and a downward slope (8) for driving the slider to slide in the direction of the male mold core (12), the male mold core (12), the female mold core (3) and / or the slider jointly form a plurality of separated part forming cavities (2) and / or a shunt flow channel (5); the shunt flow channel (5) extends along the length direction of the male mold core (12) and communicates with the plurality of glue port channels (6), the plurality of separated part forming cavities (2) are arranged in sequence along the length direction of the male mold core (12) and the bottom of the plurality of separated part forming cavities (2) communicates with the plurality of glue port channels (6) one by one; the top of the male mold frame (9) is further provided with a sliding surface (11) in sliding connection with the bottom of the slider and a stop surface (10) for limiting the slider to slide in the direction of moving away from the male mold core (12); one end of the slider close to the male mold core (12) is provided with an elastic member (15) connected with the male mold core (12) and driving the slider to slide in the direction of moving away from the male mold core (12); one end of the slider away from the male mold core (12) is provided with a guide slope surface in parallel with the downward slope (8) and in sliding connection with the guide slope surface and a limiting surface in parallel with the stop surface (10).

2. The injection mold for forming the plastic product with the character label and the separated parts according to claim 1, wherein: the female mold frame (1) and the female mold core (3) are further provided with a main flow channel (4) in communication with the shunt flow channel (5), the slider comprises a left slider (6-2) and a right slider (6-1) located on both sides of the male mold core (12), the left slider (6-2) and the right slider (6-1) form a plurality of glue port channels (6) with the male mold core (12); the left slider (6-2), the male mold core (12) and the female mold core (3) jointly form the shunt flow channel (5) and the plurality of separated part forming cavities (2), the right slider (6-1), the male mold core (12) and the female mold core (3) jointly form the shunt flow channel (5) and the plurality of separated part forming cavities (2).

3. The injection mold for forming the plastic product with the character label and the separated parts according to claim 1 or 2, wherein: the shunt flow channel (5) comprises a horizontal section located on the top of the male mold core (12) and a vertical section located below the side wall of the male mold core (12), the vertical section is located lower than the horizontal section, the side wall of the male mold core (12) is provided with a vertical section in communication with the horizontal section and the vertical section, and the vertical section communicates with the plurality of glue port channels (6).

4. The injection mold for forming the plastic product with the character label and the separated parts according to claim 3, wherein: the horizontal section is located at the same height as the plurality of separated part forming cavities (2), and the plurality of glue port channels (6) are connected between the plurality of separated part forming cavities (2) and the vertical section. The plurality of glue port channels (6) are all in "L" shape structure, and the bottom of the plurality of loose piece forming cavities (2) is provided with a glue inlet (13) communicating with the glue port channel (6), and the hole diameter of the glue inlet (13) is smaller than the hole diameter of the glue port channel (6).

5. The injection mold for forming a loose piece letter mark plastic product according to claim 3, characterized in that: The male mold frame (9) and the male mold core (12) are provided with a first vertical pin hole (14-1) communicating with the transverse section and a plurality of second vertical pin holes (14-2) spaced apart and communicating with the longitudinal section, and the first vertical pin hole (14-1) and the second vertical pin hole (14-2) are both provided with a pin for upwardly ejecting the injection letter semi-finished material piece.

6. The injection mold for forming a loose piece letter mark plastic product according to claim 1, characterized in that: The maximum gap between the stop surface (10) and the limiting surface is greater than the required space width for the injection letter semi-finished material piece to separate from the male mold core (12) after the slider retreats.

7. The injection mold for forming a loose piece letter mark plastic product according to claim 1, characterized in that: The elastic member (15) is a spiral spring, and a plurality of elastic members (15) are sequentially and spaced apart along the length direction of the male mold core (12).

8. The injection mold for forming a loose piece letter mark plastic product according to claim 1 or 2, characterized in that: The bottom of the female mold frame (1) is fixedly provided with an inclined guide column (7), and the axis direction of the inclined guide column (7) is parallel to the direction of the downward pressing slope surface (8); The top of the slider is provided with a guide hole penetrating into the inclined guide column (7) and slidingly connected with the inclined guide column (7).

9. The injection mold for forming a loose piece letter mark plastic product according to claim 1, characterized in that: The male mold core (12) and the female mold core (3) form a plating protection corner cavity, and the plating protection corner cavity communicates with the end of the shunt flow channel (5) through the glue port channel (6).

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