CN219006835U

CN219006835U - Secondary rubber coating forming injection mold for hose

Info

Publication number: CN219006835U
Application number: CN202223154190.1U
Authority: CN
Inventors: 王则锋
Original assignee: Zhuhai Cpt Precision Mold Co ltd
Current assignee: Zhuhai Cpt Precision Mold Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-05-12
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a secondary rubber coating forming injection mold for a hose, which comprises a front template, a rear template and a forming piece, wherein the front template is provided with a rubber injection port; the rear template is detachably connected with the front template, a first positioning groove and a second positioning groove are formed in one side, facing the front template, of the rear template, the first positioning groove and the second positioning groove are arranged at intervals along a first direction, and the rear template is provided with a glue injection channel communicated with the glue injection port; the shaping piece is installed in the back template and is located between first constant head tank and the second constant head tank, and the shaping piece is equipped with the die cavity, and die cavity and injecting glue passageway intercommunication. The first positioning groove, the second positioning groove and the forming piece are arranged, so that the sectional positioning of the hose die blank is realized, and the yield of a hose processing finished product is effectively improved.

Description

Secondary rubber coating forming injection mold for hose

Technical Field

The utility model relates to the technical field of hose manufacturing, in particular to a secondary rubber coating forming injection mold for a hose.

Background

The high-quality plastic hose products are divided into two-layer PE composite hoses and five-layer PE composite hoses. For the two-layer PE composite hose, the inner PE mould blank needs to be processed firstly during processing, and then the outer PE layer is cast outside the inner PE mould blank, so that the production and the manufacture of the two-layer PE composite hose are completed, and the hose mould blank, namely the inner PE material is soft and is coiled, can be bent and deformed when being placed on a mould, is easy to crush during mould closing, and influences the quality of a finished product.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model provides the secondary rubber coating forming injection mold for the hose, which can position hose mold blanks in multiple sections and improve the yield of finished hose processing products.

The secondary rubber coating forming injection mold for the hose comprises a front template, a rear template and a forming piece, wherein the front template is provided with a rubber injection port; the back template is detachably connected with the front template, a first positioning groove and a second positioning groove are formed in one side, facing the front template, of the back template, the first positioning groove and the second positioning groove are arranged at intervals along a first direction, and a glue injection channel communicated with the glue injection port is formed in the back template; the shaping piece is installed in the back template and is located between the first constant head tank and the second constant head tank, the shaping piece is equipped with the die cavity, the die cavity with the injecting glue passageway intercommunication.

The secondary rubber coating forming injection mold for the hose has at least the following beneficial effects: before the die assembly of a user, the hose die blank needs to be installed, specifically, the hose die blank is firstly penetrated into a cavity of a forming part, two ends of the hose die blank are penetrated out of the forming part, then the two ends of the hose die blank are correspondingly placed in a first positioning groove and a second positioning groove, then a front die plate and a rear die plate are connected for die assembly, then injection molding is carried out, and the user installs the hose die blank to respectively position the main body and two ends of the hose die blank by arranging the first positioning groove, the second positioning groove and the forming part, so that the sectional positioning of the hose die blank is realized, the problem that the hose die blank is crushed when the die assembly is caused by bending deformation of the hose die blank is avoided, and the yield of hose processing finished products is effectively improved.

According to some embodiments of the utility model, the hose secondary encapsulation injection mold further comprises a shaping rod, wherein the shaping rod sequentially penetrates through the first positioning groove, the cavity and the second positioning groove, and the outer diameter of the shaping rod is equal to the inner diameter of the hose to be processed.

According to some embodiments of the utility model, a guide part is arranged at one end of the molding part, which is close to the first positioning groove, and is provided with a guide channel, and the guide channel is respectively communicated with the glue injection channel and the cavity.

According to some embodiments of the present utility model, two guide channels are provided, the two guide channels are symmetrically disposed at two sides of the guide portion, the glue injection channel includes a main runner, a vertical runner, a first sub-runner and a second sub-runner, the main runner is connected with the vertical runner and is vertical, two ends of the first sub-runner are respectively connected with the main runner and one of the guide channels, and two ends of the second sub-runner are respectively connected with the vertical runner and the other guide channel.

According to some embodiments of the present utility model, the first positioning grooves are provided in plurality, the first positioning grooves are arranged at intervals along the second direction, a partition plate is arranged between adjacent first positioning grooves, the partition plate extends upwards and abuts against the front template, and the cavity and the second positioning grooves are respectively provided in plurality corresponding to the first positioning grooves.

According to some embodiments of the utility model, a plurality of the cavities are arranged in the molding member in a second direction, and the lengths of the plurality of cavities decrease in sequence in a direction away from the main runner.

According to some embodiments of the utility model, the plurality of molding pieces are arranged at intervals along the second direction, the glue injection channels are arranged between adjacent molding pieces, the first branch pouring channel and the second branch pouring channel are symmetrically arranged, and the first branch pouring channel and the second branch pouring channel on the same side of the glue injection channels are respectively connected with the same molding piece.

According to some embodiments of the utility model, the forming part is provided with a protruding part, the protruding part is arranged around the forming part, a limiting groove is symmetrically arranged on one side of the front template opposite to the rear template, and the protruding part is clamped in the limiting groove.

According to some embodiments of the utility model, the rear template is connected with a first positioning block, the rear template is provided with a mounting groove, the first positioning block is mounted in the mounting groove and is connected with the rear template through a bolt, the first positioning groove is formed in the first positioning block, and the glue injection channel is formed between the first positioning block and the rear template.

According to some embodiments of the utility model, the front template is connected with a plurality of guide posts, the guide posts are arranged at intervals along the circumferential direction of the front template, the rear template is provided with a plurality of guide holes, and the guide posts correspondingly penetrate through the guide holes.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a secondary overmold injection mold for a hose according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a molded article according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a glue injection channel according to an embodiment of the utility model;

fig. 4 is a schematic structural view of a rear form according to an embodiment of the present utility model.

Reference numerals: a front template 100; a glue injection port 101; a guide post 110; a rear form 200; a first positioning groove 201; a second positioning groove 202; a limit groove 203; a guide hole 204; a glue injection channel 210; a main runner 211; a sprue 212; a first runner 213; a second runner 214; a first positioning block 220; a partition 230; a molding member 300; a cavity 301; a guide channel 302; a guide 310; a protrusion 320; a shaped bar 400.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Embodiments of the present application are further described below with reference to the accompanying drawings.

Referring to fig. 1 to 4, a secondary encapsulation molding injection mold for a hose according to an embodiment of the present utility model includes a front mold plate 100, a rear mold plate 200, and a molding member 300, the front mold plate 100 being provided with an injection port 101; the rear template 200 is detachably connected with the front template 100, a first positioning groove 201 and a second positioning groove 202 are formed in one side, facing the front template 100, of the rear template 200, the first positioning groove 201 and the second positioning groove 202 are arranged at intervals along a first direction, and a glue injection channel 210 communicated with the glue injection port 101 is formed in the rear template 200; the molding member 300 is mounted on the rear mold plate 200 and located between the first positioning groove 201 and the second positioning groove 202, the molding member 300 is provided with a cavity 301, and the cavity 301 is communicated with the glue injection channel 210.

It can be understood that before the mold is closed, the hose mold blank needs to be installed, specifically, the hose mold blank is first inserted into the cavity 301 of the molding member 300, two ends of the hose mold blank are made to penetrate out of the molding member 300, then two ends of the hose mold blank are correspondingly placed in the first positioning groove 201 and the second positioning groove 202, then the front mold plate 100 and the rear mold plate 200 are connected for mold closing, then injection molding is performed, namely, glue solution is introduced into the glue injection port 101, the glue solution enters the cavity 301 through the glue injection channel 210, then the glue solution wraps the middle section of the hose mold blank in the molding member 300, then two ends of the hose mold blank are respectively flowed into the first positioning groove 201 and the second positioning groove 202 from two ends of the cavity 301, finally the glue solution is solidified and molded, and the injection molding of the hose is completed, and the user can position the main body and two ends of the hose mold blank respectively, so that the sectional positioning of the hose mold blank is realized, the problem of pressing and the mold blank is avoided when the hose mold blank is bent and deformed, and the mold is closed, and the processing yield of the hose mold is effectively improved.

Further, the front mold plate 100 is connected with a plurality of guide posts 110, the guide posts 110 are arranged at intervals along the circumferential direction of the front mold plate 100, the rear mold plate 200 is provided with a plurality of guide holes 204, and the guide posts 110 are correspondingly arranged in the guide holes 204 in a penetrating manner. Before die assembly, the guide pillar 110 is required to be installed on the front template 100, and then the guide pillar 110 is inserted into the corresponding guide hole 204, so that die assembly of the die is realized, the guide pillar 110 is arranged, the front template 100 can be guided, the moving stability of the front template 100 is improved, a user can conveniently and efficiently and stably move away the front template 100, the yield of hose processing finished products is indirectly improved, and the positioning connection of the front template 100 and the rear template 200 can be facilitated during die assembly, so that the die assembly efficiency of the die is effectively improved.

Referring to fig. 1, it can be understood that the injection mold for secondary encapsulation of a hose further includes a shaping bar 400, the shaping bar 400 is typically a high temperature resistant metal member, the shaping bar 400 is sequentially inserted into the first positioning groove 201, the cavity 301 and the second positioning groove 202, and the outer diameter of the shaping bar 400 is equal to the inner diameter of the hose to be processed. In the process of inserting the hose die blank into the cavity 301, the hose die blank is bent and is abutted against the inner wall of the cavity 301 due to the elasticity of the hose die blank, the user can insert the sizing rod 400 into the hose die blank firstly through the setting of the sizing rod 400, then insert the sized hose die blank into the cavity 301, the hose die blank can keep a straight shape through the setting of the sizing rod 400, the hose die blank can be conveniently installed into the forming piece 300 and the positioning groove by the user, and the installation efficiency of the hose die blank and the use experience of the user are further improved.

Further, the first positioning slots 201 are provided with a plurality of first positioning slots 201, the plurality of first positioning slots 201 are arranged along the second direction at intervals, a partition 230 is arranged between adjacent first positioning slots 201, the partition 230 extends upwards and is in abutment with the front template 100, and the cavity 301 and the second positioning slots 202 are respectively provided with a plurality of corresponding first positioning slots 201 (an isolation structure similar to the partition 230 is also arranged between the plurality of second positioning slots 202, and the structure of the front partition 230 is specifically referred to and will not be repeated herein). The setting like this makes the mould can process a plurality of hose mould blanks at a course of working, effectively improves the production efficiency of hose, in addition, baffle 230 between adjacent first constant head tank 201 separates first constant head tank 201 each other, simultaneously, the inside die cavity 301 of shaping piece 300 also is isolated setting (can set up the aperture and supply the glue solution circulation between the adjacent die cavity 301), set up like this, even the interval between the adjacent first constant head tank 201, the interval between the adjacent hose mould blanks is very little, also can not take place to interfere between pipe and the pipe, avoid the hose finished product to appear criticizing the front scheduling problem, effectively reduce the rejection rate of hose finished product.

Referring to fig. 2, it can be understood that the end of the molding member 300 near the first positioning groove 201 is provided with a guide portion 310, the guide portion 310 is provided with a guide passage 302, and the guide passage 302 communicates with the injection passage 210 and the cavity 301, respectively. If the glue solution flows out from the glue injection channel 210 and then directly enters the cavity 301, in the process of cooling the glue solution, the glue solution between the glue injection channel 210 and the cavity 301 is easy to overflow from a gap between the front template 100 and the rear template 200, namely, the quality of a hose finished product is influenced, the front template 100 or the rear template 200 is also easy to damage, the guide channel 302 is arranged, the guide channel 302 can guide the glue solution to enter the cavity 301 from the glue injection channel 210, and a transition area flows out between the glue injection channel 210 and the cavity 301, so that the glue solution cannot flow, the operation stability of the die is effectively improved, and the service life of the die is prolonged.

Referring to fig. 3, it can be understood that two guide channels 302 are provided, and the two guide channels 302 are symmetrically disposed at two sides of the guide portion 310, and the glue injection channel 210 includes a main runner 211, a vertical runner 212, a first sub-runner 213 and a second sub-runner 214, where the main runner 211 and the vertical runner 212 are connected and perpendicular, and two ends of the first sub-runner 213 are respectively connected with the main runner 211 and one of the guide channels 302, and two ends of the second sub-runner 214 are respectively connected with the vertical runner 212 and the other guide channel 302. By the arrangement, glue is enabled to enter the molding piece 300 from two sides, the problems of hose displacement and the like caused by impact pressure of the glue impacting the cavity 301 from a single direction during injection molding are avoided, and the operation stability of the mold and the yield of hose finished products are further improved.

Referring to fig. 1 and 3, it can be understood that a plurality of molding members 300 are arranged at intervals along the second direction, the glue injection channels 210 are disposed between adjacent molding members 300, two first sub-runners 213 and two second sub-runners 214 are symmetrically disposed, and the first sub-runner 213 and the second sub-runner 214 on the same side of the glue injection channels 210 are respectively connected with the same molding member 300. Through setting up a plurality of shaping pieces 300, further enlarge the processingquality of mould, make the mould can process more hoses in a processing flow, through setting up symmetrical first branch runner 213 and second branch runner 214, can make full use of the installation space in the mould, when simplifying the mould structure, improve the stability uniformity that the mould advances gluey, and then improve the uniformity of hose finished product.

Referring to fig. 2 and 3, it can be understood that the plurality of cavities 301 are arranged in the molding member 300 along the second direction, and the lengths of the plurality of cavities 301 decrease in sequence along the direction away from the main runner 211, that is, the end of the molding member 300 away from the injection molding channel 210 is arranged in a trapezoid shape. Since the second runner 214 is communicated with the main runner 211 through the vertical runner 212, compared with the first runner 213, the glue solution in the second runner 214 is more moved by one end, which results in that the glue solution in the two guide channels 302 on the molding member 300 is not synchronously flowed in at the initial stage of injection molding of the mold, the guide channels 302 close to the main runner 211 side, that is, the guide channels 302 communicated with the first runner 213, are advanced with glue, if the lengths of the plurality of cavities 301 in the molding member 300 are the same, the hoses in the cavities 301 close to the main runner 211 side and the hoses in the cavities 301 close to the main runner 211 side are not molded, which easily results in different lengths of hose finished products in the same batch, the consistency of the hose finished products is affected, the lengths of the plurality of cavities 301 are set to be sequentially reduced along the direction away from the main runner 211, so that the glue solution in the cavities 301 of the advanced glue is more flowed by one end distance, and the hoses in the cavities 301 of the advanced glue are synchronously molded.

Referring to fig. 4, it may be understood that the rear mold plate 200 is connected with a first positioning block 220, the rear mold plate 200 is provided with a mounting groove, the first positioning block 220 is mounted in the mounting groove and is connected with the rear mold plate 200 by a bolt, the first positioning groove 201 is disposed on the first positioning block 220 (the second positioning groove 202 is also disposed on a second positioning block similar to the first positioning block 220, the specific structure of which is referred to the first positioning block 220 and will not be described herein), and a glue injection channel 210 is formed between the first positioning block 220 and the rear mold plate 200. By the arrangement, the structure of the die is more modularized, a user can replace different first positioning blocks 220 and forming pieces 300 according to the hose size required to be processed, a new die is not required to be designed, and the production cost of the user is effectively saved.

Referring to fig. 2 and 4, it can be understood that the molding member 300 is provided with a plurality of protruding portions 320, the protruding portions 320 are disposed around the molding member 300, the plurality of protruding portions 320 are arranged at intervals in a first direction, a plurality of limiting grooves 203 corresponding to the protruding portions 320 one by one are symmetrically disposed on opposite sides of the front mold plate 100 and the rear mold plate 200, and the protruding portions 320 are clamped in the limiting grooves 203. Through setting up bulge 320 and spacing groove 203, after the mould compound die, front mould board 100 and back mould board 200 can tightly block shaping piece 300, effectively improve the installation stability of shaping piece 300, indirectly improve the yields of hose finished product.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims

1. A secondary encapsulation injection mold for a hose, comprising:

a front template provided with a glue injection port;

the rear template is detachably connected with the front template, a first positioning groove and a second positioning groove are formed in one side, facing the front template, of the rear template, the first positioning groove and the second positioning groove are arranged at intervals along a first direction, and a glue injection channel communicated with the glue injection port is formed in the rear template;

the molding piece is arranged on the rear template and located between the first positioning groove and the second positioning groove, and is provided with a cavity which is communicated with the glue injection channel.

2. The injection mold for secondary encapsulation of a hose according to claim 1, further comprising a shaping rod, wherein the shaping rod is sequentially inserted into the first positioning groove, the cavity and the second positioning groove, and the outer diameter of the shaping rod is equal to the inner diameter of the hose to be processed.

3. The injection mold for secondary encapsulation of a hose according to claim 2, wherein a guide portion is provided at an end of the molding member adjacent to the first positioning groove, the guide portion is provided with a guide passage, and the guide passage is respectively communicated with the injection passage and the cavity.

4. The injection mold for secondary encapsulation of a hose according to claim 3, wherein two guide channels are provided, the two guide channels are symmetrically provided at both sides of the guide portion, the injection channel comprises a main runner, a vertical runner, a first sub-runner and a second sub-runner, the main runner is connected with the vertical runner and is vertical, both ends of the first sub-runner are respectively connected with the main runner and one of the guide channels, and both ends of the second sub-runner are respectively connected with the vertical runner and the other guide channel.

5. The secondary plastic injection mold for hose encapsulation according to claim 1 or 4, wherein the first positioning grooves are provided in plurality, the first positioning grooves are provided at intervals along the second direction, a partition plate is provided between adjacent first positioning grooves, the partition plate extends upwards and is abutted to the front mold plate, and the cavity and the second positioning grooves are provided in plurality corresponding to the first positioning grooves.

6. The injection mold of claim 4, wherein a plurality of said cavities are aligned in a second direction in said molded part and the lengths of said cavities decrease in sequence in a direction away from said main runner.

7. The injection mold for secondary encapsulation of a hose according to claim 4, wherein a plurality of molding members are arranged at intervals along the second direction, the glue injection channels are arranged between adjacent molding members, the first runner and the second runner are symmetrically arranged, and the first runner and the second runner on the same side of the glue injection channels are respectively connected with the same molding member.

8. The secondary rubber coating molding injection mold for a hose according to claim 1 or 7, wherein the molding member is provided with a protruding portion, the protruding portion is disposed around the molding member, a limiting groove is symmetrically disposed on opposite sides of the front mold plate and the rear mold plate, and the protruding portion is clamped in the limiting groove.

9. The injection mold for secondary encapsulation of a hose according to claim 1, wherein the rear mold plate is connected with a first positioning block, the rear mold plate is provided with a mounting groove, the first positioning block is mounted in the mounting groove and is connected with the rear mold plate by a bolt, the first positioning groove is formed in the first positioning block, and the glue injection channel is formed between the first positioning block and the rear mold plate.

10. The secondary rubber coating forming injection mold for the hose according to claim 1, wherein the front mold plate is connected with a plurality of guide posts, the guide posts are arranged at intervals along the circumferential direction of the front mold plate, the rear mold plate is provided with a plurality of guide holes, and the guide posts correspondingly penetrate through the guide holes.