Injection molding magic hook insert, mold structure and magic hook injection molding method

Abstract

The invention relates to the field of magic hook injection molding equipment, in particular to an injection molding magic hook insert which comprises a first locking block, a second locking block, N magic hook mold plates and N + 1 fixing plates. The magic hook model plates and the fixing plates are arranged at intervals in an abutting connection mode, the fixing plates clamp the magic hook model plate in the middle, and the first locking block and the second locking block fix an assembly of the magic hook model plates and the fixing plates by clamping the fixing plates at the two ends; a plurality of spaced hook-shaped grooves are formed in one end part of the magic hook mold plate; an exhaust groove communicated with the end surface is formed in the plate surface of the magic hook model plate; a vent groove communicated with the hook-shaped groove and the exhaust groove is further formed in the magic hook mold plate; the hook-and-loop model plate and the fixing plate are prevented from being melted by the unformed hook-and-loop, and the melting point of the hook-and-loop model plate and the fixing plate is far higher than that of injection molding. The hook-and-loop fastener is simple in process, low in manufacturing cost, convenient to clean, high in percent of pass and beneficial to economic development.

Description

Technical Field

[0001] The invention relates to the field of magic hook injection molding equipment, and in particular to an injection molding magic hook insert, a mold structure and a magic hook injection molding method. Background Art

[0002] As people's living standards improve, their pursuit of material things is also increasing. Velcro has a simple structure, low cost and is easy to use, so it is widely used in clothing, shoes, hats, gloves, bags, sofas, vehicles and ships, seat cushions, aviation supplies, raincoats, curtains, toys, sleeping bags, sports equipment, audio equipment, medical equipment, tents, BMX sheaths, various military products, electronic wires, chargers, display utensils, etc. Velcro includes a flexible surface and a burr surface, and the magic hook on the burr surface needs to be injection molded.

[0003] However, the existing magic hook molding injection molding inserts have a complex structure. Due to structural limitations and poor exhaust during the injection molding process, the magic hook molding is incomplete, a large number of defective products appear, and the magic hook often breaks. At the same time, the magic hook inserts are integrated based on high-precision machining equipment and high-precision diffusion welding technology, the process is complicated, and the production cost is high. If the aforementioned welding process is not used, the quality of the injection molded magic hook cannot be guaranteed, the scrap rate is high, which is not conducive to economic development. At the same time, the magic hook inserts are difficult to clean.

[0004] Therefore, it is necessary to provide an injection-molded magic hook insert, a mold structure and a magic hook injection molding method to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to overcome the problems of complex manufacturing process, high manufacturing cost, high scrap rate of injection molded magic hooks due to structural defects, being unfavorable to economic development and difficulty in cleaning the magic hook inserts, the present invention provides an injection molded magic hook insert, a mold structure and a magic hook injection molding method.

[0006] To solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0007] An injection-molded magic hook inlay comprises a first locking block, a second locking block, N magic hook model plates and N+1 fixed plates; the magic hook model plate and the fixed plate are arranged in a spaced-abutting connection with each other, the fixed plate clamps the magic hook model plate in the middle, and the first locking block and the second locking block fix the assembly of the magic hook model plate and the fixed plate by clamping the fixed plates at both ends; a plurality of spaced hook-shaped grooves are arranged at one end of the magic hook model plate; an exhaust groove connected to the end face is arranged on the surface of the magic hook model plate; a venting groove connecting the hook-shaped groove and the exhaust groove is also arranged on the magic hook model plate; to avoid melting the magic hook that has not yet been formed, the magic hook model plate and the fixed plate are made of high-melting-point metal materials with a melting point much greater than the injection melting point.

[0008] As a further solution of the present invention: the first locking block, the second locking block, the magic hook model plate and the fixed plate are all provided with fixing holes at corresponding positions in the thickness direction, and the first locking block and the second locking block are fixed to the assembly of the magic hook model plate and the fixed plate by clamping the fixed plates at both ends with bolts.

[0009] As a further solution of the present invention: the magic hook model plate and the fixing plate are made of stainless steel.

[0010] As a further solution of the present invention: positioning pin holes are provided at corresponding positions in the thickness direction of the first locking block, the second locking block, the magic hook model plate and the fixing plate.

[0011] As a further solution of the present invention: the exhaust groove is a double letter T shape connected together.

[0012] As a further solution of the present invention: the magic hook model plate and the fixed plate are both convex-shaped, and are respectively provided with a model plate boss and a fixed plate boss; the first locking block and the second locking block are respectively provided with a first locking block boss and a second locking block boss on the outer sides.

[0013] As a further solution of the present invention: the thickness of the magic hook model plate and the fixing plate is 0.4 mm.

[0014] A mold structure is used for assembling any of the above-mentioned injection-molded magic hook inserts.

[0015] As a further solution of the present invention: the mold structure includes a mold body and a support member, and the mold body and the support member are detachably connected; the mold structure is provided with at least one insert installation hole.

[0016] As a further solution of the present invention: the support member is provided with a plurality of rows of positive buckles and a plurality of rows of reverse buckles at positions corresponding to the injection-molded magic hook inserts, and each adjacent row of the positive buckles is separated by a row of the reverse buckles.

[0017] As a further solution of the present invention: a heat flow channel hole is arranged in the center thickness direction of the mold body; water channel holes and a plurality of installation holes for installing the injection magic hook insert are arranged around the heat flow channel hole.

[0018] A magic hook injection molding method comprises the following steps:

[0019] Laser cut magic hook template;

[0020] Coated magic hook template board;

[0021] Laser engraved magic hook model board;

[0022] Check the magic hook template;

[0023] Mould processing;

[0024] Injection molding production.

[0025] As a further solution of the present invention: the step of "laser cutting magic hook model plate step" specifically includes:

[0026] Magic hook template plate leveling;

[0027] The magic hook model plate is placed into the laser machine for laser cutting;

[0028] Detect the size of the magic hook model plate;

[0029] Polishing, magic hook template cleaning.

[0030] As a further solution of the present invention: the step of "coating magic hook model plate" specifically includes:

[0031] coating;

[0032] Detect coating.

[0033] As a further solution of the present invention: the step of "inspecting the magic hook model plate" specifically includes:

[0034] Sequencing and assembly;

[0035] Inspection number.

[0036] As a further solution of the present invention: the step "injection molding production" specifically includes:

[0037] Place the inserts according to the numbers;

[0038] Producing magic hooks.

[0039] The invention relates to an injection-molded magic hook insert, a mold structure and a magic hook injection molding method, and has the following beneficial effects:

[0040] Since the magic hook model plate and the fixed plate are arranged in parallel, an exhaust groove connected to the hook groove is arranged on the magic hook model plate, which solves the problem of difficult exhaust during injection molding. The process is simple, the production cost is low, the cleaning is convenient, the magic hook has a high pass rate, and is conducive to economic development. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a three-dimensional diagram of the structure of the injection-molded magic hook insert of the present invention;

[0042] Figure 2 The present invention Figure 1 A magnified view of part A;

[0043] Figure 3 The present invention Figure 2 Enlarged view of part B;

[0044] Figure 4 It is a front view of the fixing plate of the present invention;

[0045] Figure 5 This is a front view of the magic hook model plate of the present invention;

[0046] Figure 6 The present invention Figure 5 Enlarged view of part C;

[0047] Figure 7 This is an assembly diagram of the injection-molded magic hook insert of the present invention;

[0048] Figure 8 It is an exploded view of the mold structure of the present invention;

[0049] Fig. 9 The present invention Figure 8 Enlarged view of part D.

[0050] Fig.10 is a flow chart of an embodiment of the present invention.

[0051] In the figure: 100-injection magic hook inlay, 110-first locking block, 111-first locking block fixing hole, 112-first locking block positioning pin hole, 113-first locking block boss, 120-second locking block, 130-magic hook model plate, 131-model plate body, 132-model plate boss, 133-model plate fixing hole, 134-model plate positioning pin hole, 135-exhaust groove, 136-hook Groove, 137-ventilation groove, 140-fixed plate, 141-fixed plate body, 142-fixed plate boss, 143-fixed plate fixing hole, 144-fixed plate positioning pin hole, 200-mold structure, 210-mold body, 211-insert mounting hole, 212-mounting hole, 213-hot flow channel hole, 214-water channel hole, 220-support, 221-forward buckle, 222-reverse buckle. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the following is a further detailed description of an injection molding magic hook insert, a mold structure and a magic hook injection molding method of the present invention in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0055] like Figures 1 to 6As shown, an injection molded magic hook inlay 100 includes a first locking block 110, a second locking block 120, N magic hook model plates 130 and N+1 fixed plates 140; the magic hook model plates 130 and the fixed plates 140 are arranged in a spaced relationship and connected with each other, the fixed plates 140 clamp the magic hook model plate 130 in the middle, and the first locking block 110 and the second locking block 120 fix the assembly of the magic hook model plate 130 and the fixed plate 140 by clamping the fixed plates 140 at both ends; the first locking block 110 and the second locking block 120 are symmetrically arranged on the structural axis; the magic hook model plates One end of the magic hook 130 is provided with a plurality of spaced hook-shaped grooves 136; the magic hook model plate 130 is provided with an exhaust groove 135 connected to the end surface, and after the magic hook model plate 130 and the fixed plate 140 are reinforced into an assembly, the exhaust groove 135 becomes an exhaust hole; the magic hook model plate 130 is also provided with a venting groove 137 connecting the hook-shaped groove 136 and the exhaust groove 135; to prevent the magic hook that has not yet been formed from melting from melting the magic hook model plate 130 and the fixed plate 140, the magic hook model plate 130 and the fixed plate 140 are made of high melting point metal materials with a melting point much greater than the injection melting point, such as copper, gold, iron and other metals. When in use, apply a layer of anti-rust oil on the magic hook model plate 130 and the fixed plate 140 for lubrication. The injection molding effect is better. Preferably, the magic hook model plate 130 and the fixing plate 140 are made of stainless steel with a thickness of 0.3 mm-6.0 mm, preferably 0.3 mm, 0.4 mm and 0.5 mm.

[0056] Since the magic hook model plate 130 and the fixing plate 140 with a sheet structure are reinforced into a parallel abutment assembly, and an exhaust groove 135 connected to the hook-shaped groove 136 is provided on the magic hook model plate 130, the problem of difficult exhaust during injection molding is solved. The process is simple, the manufacturing cost is low, the disassembly is simple, and the cleaning is convenient. The problem of magic hook breakage during injection molding is solved, and the magic hook injection molding qualified rate is greatly increased, which is beneficial to economic development.

[0057] like Figures 1 to 6As shown, as a further solution of the present invention: the first locking block 110, the second locking block 120, the magic hook model plate 130 and the fixed plate 140 are all provided with fixing holes at corresponding positions in the thickness direction; the first locking block 110 is provided with at least one first locking block fixing hole 111, and the second locking block 120 is provided with a second locking block fixing hole (not shown in the figure) axially symmetrically arranged with the first locking block fixing hole 111; the magic hook model plate 130 and the fixed plate 140 are respectively provided with model plate fixing holes 133 and fixed plate fixing holes 143 corresponding to the positions of the first locking block fixing holes 111; the first locking block 110 and the second locking block 120 use bolts to fix the assembly of the magic hook model plate 130 and the fixed plate 140 by clamping the fixed plates 140 at both ends.

[0058] In addition, the existing magic hook inserts are large in size and high in cost. Due to the large size, the cooling water channel space is sacrificed, resulting in a long production cycle. Compared with the traditional complex welding process, the injection molding magic hook insert 100 has a simple structure, small size, low cost, and a short response order cycle.

[0059] like Figures 1 to 6 As shown, as a further solution of the present invention: the first locking block 110, the second locking block 120, the magic hook model plate 130 and the fixed plate 140 are all provided with positioning pin holes at corresponding positions in the thickness direction. The first locking block 110 is provided with at least one first locking block positioning pin hole 112, and the second locking block 120 is provided with a second locking block positioning pin hole (not shown) axially symmetrically arranged with the first locking block positioning pin hole 112; the magic hook model plate 130 and the fixed plate 140 are respectively provided with a model plate positioning pin hole 134 and a fixed plate positioning pin hole 144 corresponding to the position of the first locking block positioning pin hole 112.

[0060] like Figures 1 to 6 As shown, as a further solution of the present invention: the exhaust groove 135 is a double letter T shape that is adjacent to each other and connected.

[0061] Preferably, the depth of the vent groove 137 is shallower than the depth of the exhaust groove 135 and the hook-shaped groove 136 .

[0062] like Figures 1 to 6As shown, as a further solution of the present invention: the magic hook model plate 130 includes a model plate body 131, the fixed plate 140 includes a fixed plate body 141, the magic hook model plate 130 and the fixed plate 140 are both convex, and are respectively provided with a model plate boss 132 and a fixed plate boss 142; the first locking block 110 and the second locking block 120 are respectively provided with a first locking block boss 113 and a second locking block boss (not shown in the figure) on the outside, and the first locking block boss 113 and the second locking block boss are arranged in an axially symmetrical structure. The purpose of providing the model plate boss 132, the fixed plate boss 142, the first locking block boss 113 and the second locking block boss is to limit the height of the injection-molded magic hook insert 100 during injection molding.

[0063] like Figures 7 to 9 As shown, a mold structure 200 is used to assemble any of the injection-molded magic hook inserts 100 described above.

[0064] When in use, the injection molding magic hook insert 100 is installed in the mold structure 200. The first locking block 110 and the second locking block 120 not only fix the magic hook model plate 130 and the fixing plate 140, but also act as wedges in the mold structure 200 to secure the injection molding magic hook insert 100.

[0065] like Figures 7 to 9 As shown, as a further solution of the present invention: the mold structure 200 includes a mold body 210 and a support member 220, and the mold body 210 and the support member 220 are detachably connected. The detachable support member 220 is provided to facilitate the disassembly and replacement of the injection magic hook insert 100, which is low in cost, compact in space, and convenient for adding cooling water channels, thereby shortening the production cycle and improving production efficiency; the mold structure 200 is provided with at least one insert installation hole 211. When there are multiple insert installation holes 211, they are spaced apart from each other, which facilitates the installation and disassembly of the injection magic hook insert 100.

[0066] like Figures 7 to 9 As shown, as a further solution of the present invention: the support member 220 is provided with a plurality of columns of positive buckles 221 and a plurality of columns of reverse buckles 222 at the position corresponding to the injection-molded magic hook insert 100, and each adjacent column of the positive buckles 221 is separated by a column of the reverse buckles 222.

[0067] Several rows of the forward buckles 221 and the reverse buckles 222 are provided to lock and fasten the injection-molded magic hook insert 100 during installation, making it more secure and convenient for injection molding.

[0068] like Figures 7 to 9As shown, as a further solution of the present invention: a heat flow channel hole 213 is provided in the center thickness direction of the mold body 210; a water channel hole 214 and a plurality of mounting holes 212 for mounting the injection magic hook insert 100 are provided around the heat flow channel hole 213.

[0069] Providing the heat flow channel hole 213 and the water channel hole 214 is beneficial to extending the working time of the mold structure 200 and improving production efficiency.

[0070] like Fig.10 As shown, a magic hook injection molding method comprises the following steps:

[0071] S100: Laser cutting magic hook template, cutting out corresponding shapes and sizes according to different magic hook sizes;

[0072] S200: Coated magic hook model plate, which acts as a lubricant and makes the injection molding qualification rate higher;

[0073] S300: Laser engraving magic hook template, according to different shapes and sizes, laser engraving marks are made on the magic hook template to facilitate scientific management and improve production efficiency;

[0074] S400: Check the magic hook model board and manage scientifically;

[0075] S500: mold processing, preparing for injection molding;

[0076] S600: Injection molding production.

[0077] like Fig.10 As shown, as a further solution of the present invention: step "S100: laser cutting magic hook model plate step" specifically includes:

[0078] S110: Magic hook model plate leveling, to stabilize the size and improve cutting accuracy;

[0079] S120: Put the magic hook model plate into the laser machine for laser cutting, and cut the required size according to the different magic hook sizes;

[0080] S130: Detect the size of the magic hook model plate to facilitate quality control;

[0081] S140: Polishing, magic hook model plate cleaning, keep improving to improve the quality of injection molding.

[0082] like Fig.10 As shown, as a further solution of the present invention: step "S200: coating magic hook model plate" specifically includes:

[0083] S210: coating, applying anti-rust oil, playing a lubricating role, so as to improve the injection molding qualification rate;

[0084] S220: Check coating to prevent missing or insufficient coating which may affect the next process.

[0085] like Fig.10 As shown, as a further solution of the present invention: step "S400: inspecting the magic hook model plate" specifically includes:

[0086] S410: Sorting and assembly to facilitate scientific management and production;

[0087] S420: Check the serial number to prevent misplacement.

[0088] like Fig.10 As shown in the figure: As a further solution of the present invention: step "S600: injection molding production" specifically includes:

[0089] S610: Place inserts according to numbers to facilitate scientific management and reasonable planning of production cycles;

[0090] S620: Producing magic hooks.

[0091] The invention described above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An injection molded magic hook insert (100), characterized in that: The invention comprises a first locking block (110), a second locking block (120), N magic hook model plates (130) and N+1 fixing plates (140); the magic hook model plates (130) and the fixing plates (140) are arranged in a spaced-abutting relationship with each other, the fixing plates (140) clamp the magic hook model plates (130) in the middle, and the first locking block (110) and the second locking block (120) fix the magic hook model plates (130) and the fixing plates (140) by clamping the fixing plates (140) at both ends; the magic One end of the hook model plate (130) is provided with a plurality of spaced hook-shaped grooves (136); the magic hook model plate (130) is provided with an exhaust groove (135) connected to the end surface; the magic hook model plate (130) is also provided with a venting groove (137) connected to the hook-shaped groove (136) and the exhaust groove (135); to prevent the magic hook that has not yet been formed from melting from melting the magic hook model plate (130) and the fixing plate (140), the magic hook model plate (130) and the fixing plate (140) are made of high melting point metal material with a melting point much greater than the injection melting point.

2. The injection molded magic hook insert (100) according to claim 1, characterized in that: The first locking block (110), the second locking block (120), the magic hook model plate (130) and the fixing plate (140) are all provided with fixing holes at corresponding positions in the thickness direction, and the first locking block (110) and the second locking block (120) are fixed to the assembly of the magic hook model plate (130) and the fixing plate (140) by bolts through the fixing plates (140) clamped at both ends.

3. The injection-molded magic hook insert (100) according to claim 2, characterized in that: The magic hook model plate (130) and the fixing plate (140) are made of stainless steel.

4. The injection-molded magic hook insert (100) according to claim 3, characterized in that: Positioning pin holes are provided at corresponding positions in the thickness direction of the first locking block (110), the second locking block (120), the magic hook model plate (130) and the fixing plate (140).

5. The injection-molded magic hook insert (100) according to claim 4, characterized in that: The exhaust grooves (135) are in a double T-shape that are adjacent to each other and connected.

6. The injection-molded magic hook insert (100) according to claim 5, characterized in that: The magic hook model plate (130) and the fixed plate (140) are both convex-shaped, and are respectively provided with a model plate boss (132) and a fixed plate boss (142); the first locking block (110) and the second locking block (120) are respectively provided with a first locking block boss (113) and a second locking block boss on the outside.

7. The injection-molded magic hook insert (100) according to claim 6, characterized in that: The thickness of the magic hook model plate (130) and the fixing plate (140) is 0.4 mm.

8. A mold structure (200), characterized in that: Used for assembling the injection-molded magic hook insert (100) as claimed in any one of claims 1 to 7.

9. The mold structure (200) according to claim 8, characterized in that: The mold structure (200) comprises a mold body (210) and a support member (220), wherein the mold body (210) and the support member (220) are detachably connected; the mold structure (200) is provided with at least one insert mounting hole (211).

10. The mold structure (200) according to claim 9, characterized in that: The support member (220) is provided with a plurality of rows of positive buckles (221) and a plurality of rows of reverse buckles (222) at positions corresponding to the injection-molded magic hook insert (100), and each adjacent row of the positive buckles (221) is separated by a row of the reverse buckles (222).

11. The mold structure (200) according to claim 9 or 10, characterized in that: A heat flow channel hole (213) is provided in the center thickness direction of the mold body (210); and a water channel hole (214) and a plurality of mounting holes (212) for mounting the injection molding magic hook insert (100) are provided around the heat flow channel hole (213).

12. A magic hook injection molding method, characterized in that: The following steps are involved: Laser cut magic hook template; Coated magic hook template board; Laser engraved magic hook model board; Check the magic hook template; Mould processing; Injection molding production.

13. The magic hook injection molding method according to claim 12, characterized in that: The steps of "laser cutting magic hook template" specifically include: Magic hook template plate leveling; The magic hook model plate is placed into the laser machine for laser cutting; Detect the size of the magic hook model plate; Polishing, magic hook template cleaning.

14. The magic hook injection molding method according to claim 13, characterized in that: The steps of "coating magic hook template plate" specifically include: coating; Detect coating.

15. The magic hook injection molding method according to claim 14, characterized in that: The steps of "Inspecting the Magic Hook Model Plate" specifically include: Sequencing and assembly; Inspection number.

16. The magic hook injection molding method according to any one of claims 12 to 15, characterized in that: The step "injection molding production" specifically includes: Place the inserts according to the numbers; Producing magic hooks.

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