Hook and preparation method thereof

Abstract

The invention belongs to the technical field of hook preparation, particularly relates to a hook and a preparation method thereof, and aims to solve the problems that when a high-temperature melt is in contact with a low-temperature hook, thermal expansion of a component is easily caused, thermal stress is generated, a mold is easily loosened, deformation cannot be compensated in real time, and the stability and the product quality of hook preparation are reduced. Comprising a hook body, and the middle part of the hook body is fixedly connected with a cylindrical separation blade; comprising the following steps: screening plastic particles, and carrying out pretreatment such as drying, coloring or adding color master batches to ensure that raw materials meet process requirements; and the plastic is heated to a molten state in the injection molding equipment. The hook and the preparation method thereof have the advantages that mold micro-looseness caused by thermal expansion of a traditional rigid mold locking mode is avoided, the sealing performance of a cavity is ensured, thermal expansion energy is converted into compensation power, the mold locking force is automatically enhanced, the defective rate such as sink marks and deformation caused by thermal stress is remarkably reduced, and flash and dimensional deviation are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hook manufacturing, in particular to a hook and a manufacturing method thereof. BACKGROUND

[0002] Currently, the hooks with a baffle on the market are realized by punching a hole in the center of the hook "8" and adding a spring, which is labor-intensive to manufacture and can only be opened in one direction, reducing the opening of the hook. The baffle is connected to the hook by injection molding with rubber or soft plastic material, and the baffle can be opened in all directions, and the manufacturing is simple. The injection molding equipment is needed in the hook manufacturing process.

[0003] When the existing hook injection molding equipment is in use, the high-temperature melt contacts the low-temperature hook, which can easily cause the parts to thermally expand and generate thermal stress, causing the mold to easily loosen and unable to compensate for the deformation in real time, thereby reducing the stability of the hook manufacturing and the product quality. SUMMARY

[0004] The present application discloses a hook and a manufacturing method thereof, which aims to solve the technical problem that the high-temperature melt contacts the low-temperature hook, which can easily cause the parts to thermally expand and generate thermal stress, causing the mold to easily loosen and unable to compensate for the deformation in real time, thereby reducing the stability of the hook manufacturing and the product quality.

[0005] The hook provided by the present application comprises:

[0006] The hook body is fixedly connected with a cylindrical baffle at the middle part.

[0007] A manufacturing method of the hook comprises the hook body as described above, and comprises the following steps:

[0008] S1, screen the plastic particles, and perform pretreatments such as drying, coloring or adding color master batches, to ensure that the raw materials meet the process requirements;

[0009] S2, heat the plastic to a molten state in the injection molding equipment, uniformly mix by a screw, and accurately control the temperature according to the material properties. The molten plastic is injected into the mold cavity under high pressure, and the filling speed and pressure need to match the product structure and mold design;

[0010] S3, keep the pressure compensation shrinkage, and then cool and solidify, and the time depends on the thermal conductivity of the material and the product thickness;

[0011] S4, take out the formed piece by the ejection mechanism after the mold is opened, and deformation or surface damage needs to be avoided, and then trim the burrs, polish or surface treat, to improve the product quality.

[0012] In a preferred scheme, the injection molding equipment comprises:

[0013] The injection molding machine table is provided with an injection molding head above it;

[0014] The compensation module is arranged above the injection molding machine table and is used for dynamically compensating for the thermal deformation of the mold and improving product quality.

[0015] The cleaning module is arranged above the injection molding head and is used for cleaning residual melt at the injection molding port.

[0016] In a preferred scheme, the compensation module comprises:

[0017] The injection molding tooling table is fixedly connected above the injection molding head, two slide grooves are symmetrically arranged above the injection molding tooling table, one guide cylinder is fixedly connected to each side of the plurality of slide grooves, and a horizontal moving block is slidably connected to the outside of each guide cylinder.

[0018] A plurality of supporting rods are fixedly connected to one side of the horizontal moving block, and each supporting rod is connected with an adaptive buffer rod through a bearing on both sides thereof, and each adaptive buffer rod on the same side is connected with an L-shaped rotating plate through a bearing on the opposite side thereof.

[0019] In a preferred scheme, the compensation module further comprises:

[0020] Two fixed plates are connected to both sides of the injection molding tooling table through bolts, and each fixed plate is connected with a double-shaft screw through a bearing on the opposite side thereof, one side of each horizontal moving block on the same side is fixedly connected with a screw rod adjusting rod, and one side of each fixed plate is fixedly connected with a screw rod motor, and the driving end of the screw rod motor is connected to one side of the double-shaft screw through a shaft coupling.

[0021] A fixed frame is fixedly connected to one side of the injection molding tooling table, two reset springs II are fixedly connected to one side of each supporting rod, one side of each reset spring II is fixedly connected to one side of each adaptive buffer rod, two circular slide holes are arranged on both sides of each L-shaped rotating plate, a circular slide column is slidably connected to the inside of each circular slide hole, an extension spring is fixedly connected to one side of each circular slide column, one side of each extension spring is fixedly connected to one side of each L-shaped rotating plate, and one end of each circular slide column on the same side is fixedly connected to one clamping panel.

[0022] In a preferred scheme, the compensation module further comprises:

[0023] A plurality of telescopic air cylinder plates are fixedly connected to one side of each hollow cylinder, two notches are arranged on one side of the fixed frame, an adaptive sliding block is slidably connected to the inside of each notch, a pressing rod is connected to one side of each adaptive sliding block through a bearing, and one pressing plate is movably connected to one side of each pressing rod.

[0024] Two air bags are fixedly connected to one side of the two notches respectively, one side of the air bag is fixedly connected with one side of the adaptive sliding block, one side of the two downward pressing rods is fixedly connected with the reset spring one, one side of the reset spring one is fixedly connected with one side of the fixed frame, one side of the plurality of air bags is fixedly connected with the inflation pipe, one end of the inflation pipe is fixedly connected to the inside of the hollow cylinder, the upper part of the injection molding tooling table is placed with the upper mold and the lower mold.

[0025] In a preferred scheme, the cleaning module comprises:

[0026] Two guide rails are fixedly connected to the two sides of the injection molding head symmetrically, and the sliding rods are slidably connected to the interiors of the two guide rails.

[0027] The hollow mounting frame is fixedly connected to one side of the two sliding rods, and the inner wall of the hollow mounting frame is equidistantly provided with the air blowing grooves.

[0028] In a preferred scheme, the cleaning module further comprises:

[0029] The two electrically driven rods are fixedly connected to the two sides of the injection molding head symmetrically, and the driving ends of the electrically driven rods are fixedly connected with one side of the sliding rods.

[0030] The pump body is fixedly connected to one side of the injection molding head, and the air blowing end of the pump body is fixedly connected to the inside of the hollow mounting frame through the metal telescopic pipe.

[0031] In a preferred scheme, the cleaning module further comprises:

[0032] The two reset springs three are fixedly connected to the inside of the hollow mounting frame, and the hollow mounting frame is fixedly connected with the two cleaning soft brush plates symmetrically in the inside, and one side of the reset spring three is fixedly connected with one side of the cleaning soft brush plate.

[0033] In a preferred scheme, the upper part of the injection molding machine table is provided with the protective window.

[0034] As can be seen from the above, the hook and the preparation method thereof provided by the present application have the beneficial effects of avoiding the mold slight loosening caused by thermal expansion of the traditional rigid mold locking, ensuring the cavity sealing, converting the thermal expansion energy into compensation power, automatically enhancing the mold locking force, significantly reducing the defective rate caused by thermal stress such as shrinkage and deformation, and reducing the beneficial effects of the flash and the size deviation. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structure schematic diagram of the hook provided by the present application;

[0036] Figure 2 It is an injection molding equipment main body structure schematic diagram of the preparation method of the hook provided by the present application;

[0037] Figure 3A side view structure schematic diagram of injection molding equipment of a hook manufacturing method proposed by the present application;

[0038] Figure 4 A compensation module structure schematic diagram of injection molding equipment of a hook manufacturing method proposed by the present application;

[0039] Figure 5 A compensation module partial structure schematic diagram of injection molding equipment of a hook manufacturing method proposed by the present application;

[0040] Figure 6 A self-adaptive buffer rod structure schematic diagram of injection molding equipment of a hook manufacturing method proposed by the present application;

[0041] Figure 7 A cleaning module structure schematic diagram of injection molding equipment of a hook manufacturing method proposed by the present application;

[0042] Figure 8 A cleaning module partial structure schematic diagram of injection molding equipment of a hook manufacturing method proposed by the present application.

[0043] In the figure: 1, hook body; 2, cylindrical baffle; 3, injection molding machine; 4, injection molding head; 5, protective window; 6, compensation module; 601, injection molding tooling table; 602, screw motor; 603, fixed frame; 604, self-adaptive slider; 605, air bag; 606, hollow cylinder; 607, telescopic air cylinder plate; 608, inflation pipe; 609, pressing rod; 610, reset spring one; 611, pressing plate; 612, fixed plate; 613, bidirectional screw; 614, screw adjusting rod; 615, guide cylinder; 616, horizontal moving block; 617, support rod; 618, L rotating plate; 619, round slide column; 620, telescopic spring; 621, clamping panel; 622, self-adaptive buffer rod; 623, reset spring two; 7, cleaning module; 701, electric drive rod; 702, guide rail; 703, slide rod; 704, pump body; 705, metal telescopic pipe; 706, hollow mounting frame; 707, air blowing groove; 708, reset spring three; 709, cleaning soft brush plate; 8, lower mold; 9, upper mold. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments.

[0045] The hook and the preparation method thereof disclosed by the application are mainly applied to the scene that high-temperature melt contacts the low-temperature hook, the part is prone to thermal expansion, thermal stress is generated, the mold is prone to looseness, real-time compensation deformation cannot be achieved, and thus the stability of the hook preparation and the product quality are reduced.

[0046] Referring to Figure 1 A hook comprises:

[0047] A hook body 1 is fixedly connected with a cylindrical baffle 2 at the middle part of the hook body 1.

[0048] A preparation method of a hook comprises the hook body 1 in the above, and comprises the following steps:

[0049] S1, screening plastic particles, performing pretreatment such as drying, coloring or adding color master batches, and ensuring that raw materials meet process requirements;

[0050] S2, the plastic is heated to a molten state in an injection molding device, is uniformly mixed through a screw, the temperature needs to be accurately controlled according to the material characteristics, the molten plastic is injected into a mold cavity under high pressure, and the filling speed and pressure need to match the product structure and the mold design;

[0051] S3, keeping pressure compensation shrinkage, and then cooling and solidifying, the time depends on the thermal conductivity of the material and the product thickness;

[0052] S4, the molded part is taken out through an ejection mechanism after the mold is opened, deformation or surface damage needs to be avoided, and then the burrs are trimmed, polished or surface treated, and the finished product quality is improved.

[0053] Referring to Figures 2-6 In a preferred embodiment, the injection molding device comprises:

[0054] An injection molding machine table 3 is provided with an injection molding head 4 above the injection molding machine table 3;

[0055] A compensation module 6 is arranged above the injection molding machine table 3, and the compensation module 6 is used for dynamically compensating the thermal deformation of the mold and improving the product quality;

[0056] A cleaning module 7 is arranged above the injection molding head 4, and the cleaning module 7 is used for removing residual melt from the injection molding port.

[0057] Through the synergistic effect of the compensation module 6 and the cleaning module 7, the mold thermal expansion looseness and the injection molding head blockage are solved.

[0058] In the application, the compensation module 6 comprises:

[0059] The injection molding tooling table 601 is fixedly connected above the injection molding machine head, two sliding grooves are symmetrically arranged above the injection molding tooling table 601, one guide cylinder 615 is fixedly connected to the opposite side of each sliding groove, and a horizontal moving block 616 is slidably connected to the outside of each guide cylinder 615;

[0060] A plurality of supporting rods 617 are fixedly connected to one side of the horizontal moving block 616, a self-adapting buffer rod 622 is connected to the two sides of each supporting rod 617 through a bearing, and one L-shaped rotating plate 618 is connected to the opposite side of the two self-adapting buffer rods 622 on the same side through a bearing.

[0061] In the present application, the compensation module 6 further comprises:

[0062] Two fixed plates 612 are connected to the two sides of the injection molding tooling table 601 through bolts, one bidirectional screw rod 613 is connected to the opposite side of each fixed plate 612 through a bearing, one screw rod adjusting rod 614 is fixedly connected to one side of each horizontal moving block 616 on the same side, and a screw motor 602 is fixedly connected to one side of each fixed plate 612.

[0063] A fixed frame 603 is fixedly connected to one side of the injection molding tooling table 601, two reset springs two 623 are fixedly connected to one side of each supporting rod 617, one side of the reset spring two 623 is fixedly connected to one side of the self-adapting buffer rod 622, two circular sliding holes are arranged on the two sides of each L-shaped rotating plate 618, a circular sliding column 619 is slidably connected to the inside of each circular sliding hole, an extension spring 620 is fixedly connected to one side of each circular sliding column 619, one side of the extension spring 620 is fixedly connected to one side of the L-shaped rotating plate 618, and one clamping panel 621 is fixedly connected to one end of each circular sliding column 619 on the same side.

[0064] In the present application, the compensation module 6 further comprises:

[0065] A plurality of extension air cylinder plates 607 are fixedly connected to one side of each hollow cylinder 606, two notches are arranged on one side of the fixed frame 603, a self-adapting sliding block 604 is slidably connected to the inside of each notch, a pressing rod 609 is connected to one side of each self-adapting sliding block 604 through a bearing, and one pressing plate 611 is movably connected to one side of each pressing rod 609.

[0066] Two air bags 605 are fixedly connected to one side of the two notches respectively, one side of the air bag 605 is fixedly connected with one side of the adaptive sliding block 604, one side of the two lower pressing rods 609 is fixedly connected with the reset spring one 610, one side of the reset spring one 610 is fixedly connected with one side of the fixed frame 603, one side of the plurality of air bags 605 is fixedly connected with the inflation pipe 608, one end of the inflation pipe 608 is fixedly connected in the inside of the hollow cylinder 606, the upper die 9 and the lower die 8 are placed above the injection molding tooling table 601

[0067] In a specific application scenario, the compensation module 6 drives the horizontal moving block 616 through the bidirectional screw rod 613 to drive the connecting rod 617, so that the L-shaped rotating plate 618 drives the clamping panel 621 to adaptively clamp the lower die 8 and the upper die 9; when the mold is heated and expanded during the injection molding process, the thermal stress drives the clamping panel 621 to displace, the elastic spring 620 is used for buffering the deformation impact, the reset spring two 623 is used for providing the reverse elastic force, the real-time adjustment of the dynamic locking force is realized, and when the lower pressing plate 611 is heated and expanded and moves upward, the lower pressing rod 609 is driven to press the adaptive sliding block 604, the air bag 605 is compressed to generate high-pressure gas, the gas is injected into the telescopic cylinder plate 607 through the inflation pipe 608, the telescopic cylinder plate 607 on the hollow cylinder 606 is driven to expand and tightly press the upper die 9, the mold is prevented from being slightly loosened due to thermal expansion in the traditional rigid mold clamping, the cavity tightness is ensured, the thermal expansion energy is converted into compensation power, the mold clamping force is automatically enhanced, the scrap rate caused by thermal stress such as shrinkage and deformation is significantly reduced, the flash and the size deviation are reduced, and the connection precision of the hook body 1 and the cylindrical baffle 2 is improved.

[0068] Referring to Figure 2 , Figure 7 and Figure 8 , in a preferred embodiment, the cleaning module 7 comprises:

[0069] Two guide rails 702 are fixedly connected to the two sides of the injection head 4, and the two guide rails 702 are symmetrically arranged; the two guide rails 702 are slidably connected with the slide rods 703.

[0070] The hollow mounting frame 706 is fixedly connected to one side of the two slide rods 703, and the inner wall of the hollow mounting frame 706 is equidistantly provided with the air blowing grooves 707.

[0071] In the present application, the cleaning module 7 further comprises:

[0072] Two electric drive rods 701 are fixedly connected to the two sides of the injection head 4, and the drive ends of the electric drive rods 701 are fixedly connected with one side of the slide rods 703.

[0073] The pump body 704 is fixedly connected to one side of the injection head 4, and the air blowing end of the pump body 704 is fixedly connected to the inside of the hollow mounting frame 706 through the metal telescopic pipe 705.

[0074] In the present application, the cleaning module 7 further comprises:

[0075] Two reset springs three 708 are fixedly connected to the inside of the hollow mounting frame 706, and the inside of the hollow mounting frame 706 is fixedly connected with two cleaning soft brush plates 709 in a symmetrical manner. One side of the reset spring three 708 is fixedly connected with one side of the cleaning soft brush plate 709.

[0076] In a specific application scenario, the cleaning module 7 pushes the slide rod 703 through the electric drive rod 701, drives the hollow mounting frame 706 to wrap the injection head 4, and the pump body 704 sprays high-pressure gas to the air slot 707 through the metal telescopic pipe 705. The cleaning soft brush plate 709 supported by the reset spring three 708 is scraped bidirectionally to completely remove the residual melt and prevent cold material from blocking the injection port, thereby ensuring the consistency of the injection filling amount each time and improving the batch stability.

[0077] Referring to Figure 2 In a preferred embodiment, a protective window 5 is arranged above the injection molding machine 3.

[0078] Working principle: when in use,

[0079] The compensation module 6 drives the horizontal moving block 616 through the bidirectional screw rod 613 to drive the connecting rod 617, so that the L-shaped rotating plate 618 drives the clamping panel 621 to adaptively clamp the lower mold 8 and the upper mold 9. When the mold is heated and expanded during the injection molding process, the thermal stress pushes the clamping panel 621 to displace, and the extension spring 620 buffers the deformation impact, while the reset spring two 623 provides a reverse springback force, thereby realizing real-time adjustment of the dynamic locking force. Meanwhile, when the lower pressing plate 611 is heated and expanded to move upward, the lower pressing rod 609 is pushed to extrude the self-adaptive sliding block 604, the gas bag 605 generates high-pressure gas, the gas is injected into the telescopic cylinder plate 607 through the inflation pipe 608, the telescopic cylinder plate 607 on the hollow cylinder 606 is expanded to tightly press the upper mold 9, thereby avoiding the mold loosening caused by thermal expansion in the traditional rigid locking, ensuring the cavity sealing performance, converting the thermal expansion energy into compensation power, automatically enhancing the locking force, significantly reducing the defect rate caused by thermal stress such as shrinkage and deformation, reducing the flash and size deviation, and improving the connection accuracy of the hook body 1 and the cylindrical baffle 2.

[0080] The cleaning module 7 pushes the slide rod 703 through the electric drive rod 701, drives the hollow mounting frame 706 to wrap the injection head 4, and the pump body 704 sprays high-pressure gas to the air slot 707 through the metal telescopic pipe 705. The cleaning soft brush plate 709 supported by the reset spring three 708 is scraped bidirectionally to completely remove the residual melt and prevent cold material from blocking the injection port, thereby ensuring the consistency of the injection filling amount each time and improving the batch stability.

[0081] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A hook, characterized in that The utility model relates to a hook body, the middle part of hook body is fixedly connected with the cylindrical baffle. The method comprises the following steps:

2. A method of manufacturing a hook comprising a hook body as in claim 1, characterized in that S1, screening plastic particles, drying, coloring or adding color master batch and other pretreatments to ensure that the raw materials meet the process requirements; S2, the plastic is heated to a molten state in the injection molding equipment, mixed uniformly through the screw, the temperature needs to be accurately controlled according to the material characteristics, the molten plastic is injected into the mold cavity under high pressure, the filling speed and pressure need to match the product structure and mold design; S3, keep pressure compensation shrinkage, then cool and solidify, the time depends on the thermal conductivity of the material and the product thickness; S4, the mold is opened and the molded part is taken out by the ejection mechanism, deformation or surface damage needs to be avoided, and then the flash is trimmed, polished or surface treated to improve the quality of the finished product. The injection molding equipment comprises:

3. A method of making a hook according to claim 2, wherein, an injection molding machine table provided with an injection molding head above; a compensation module arranged above the injection molding machine table, the compensation module is used for dynamically compensating the thermal deformation of the mold to improve the product quality; a cleaning module arranged above the injection molding head, the cleaning module is used for removing residual melt from the injection molding port. The compensation module comprises:

4. A method of making a hook according to claim 3, wherein, an injection molding tooling table fixedly connected to the top of the injection molding head, two symmetrical sliding grooves are formed in the top of the injection molding tooling table, a same guide cylinder is fixedly connected to the opposite side of the plurality of sliding grooves, and a horizontal moving block is slidably connected to the outside of the plurality of guide cylinders; a plurality of supporting rods are respectively fixedly connected to one side of the horizontal moving block, a self-adapting buffer rod is connected to the two sides of each supporting rod through a bearing, and a same L-shaped rotating plate is connected to the opposite side of the two self-adapting buffer rods on the same side through a bearing. The compensation module further comprises:

5. A method of making a hook according to claim 4, wherein, two fixed plates connected to the two sides of the injection molding tooling table through bolts, a same bidirectional screw rod is connected to the opposite side of each fixed plate through a bearing, a same screw rod adjusting rod is fixedly connected to one side of each horizontal moving block on the same side, a screw rod motor is fixedly connected to one side of one of the fixed plates, and the driving end of the screw rod motor is connected to one side of the bidirectional screw rod through a coupling; a fixed frame is fixedly connected to one side of the injection molding tooling table, two reset springs II are fixedly connected to one side of each supporting rod, one side of the reset spring II is fixedly connected to one side of the self-adapting buffer rod, two circular sliding holes are formed in the two sides of each L-shaped rotating plate, a circular sliding cylinder is slidably connected to the inside of each circular sliding hole, a telescopic spring is fixedly connected to one side of each circular sliding cylinder, one side of the telescopic spring is fixedly connected to one side of the L-shaped rotating plate, and a same clamping panel is fixedly connected to one end of each circular sliding cylinder on the same side. The compensation module further comprises:

6. A method of making a hook according to claim 5, wherein, a plurality of telescopic air cylinder plates are respectively fixedly connected to one side of the plurality of hollow cylinders, two notches are formed in one side of the fixed frame, a self-adapting sliding block is slidably connected to the inside of each notch, a lower pressing rod is connected to one side of each self-adapting sliding block through a bearing, and a same lower pressing plate is movably connected to one side of each lower pressing rod. ​ Two air bags are fixedly connected to one side of the two notches respectively, one side of the air bag is fixedly connected with one side of the adaptive sliding block, one side of the two downward pressing rods is fixedly connected with the reset spring one, one side of the reset spring one is fixedly connected with one side of the fixed frame, one side of the plurality of air bags is fixedly connected with the inflation pipe, one end of the inflation pipe is fixedly connected to the inside of the hollow cylinder, the upper part of the injection molding tooling table is placed with the upper mold and the lower mold.

7. A method of making a hook according to claim 6, wherein, The cleaning module comprises: Two guide rails are fixedly connected to the two sides of the injection head symmetrically, and the inside of the two guide rails is slidably connected with the slide rod; The hollow installation frame is fixedly connected to one side of the two slide rods, and the inner wall of the hollow installation frame is equidistantly provided with the air blowing groove.

8. A method of making a hook according to claim 7, wherein, The cleaning module further comprises: Two electric drive rods are fixedly connected to the two sides of the injection head symmetrically, and the driving end of the electric drive rod is fixedly connected with one side of the slide rod; The pump body is fixedly connected to one side of the injection head, and the air blowing end of the pump body is fixedly connected to the inside of the hollow installation frame through the metal telescopic pipe.

9. A method of making a hook according to claim 8, wherein, The cleaning module further comprises: Two reset springs three are fixedly connected to the inside of the hollow installation frame, the inside of the hollow installation frame is fixedly connected with two cleaning soft brush plates symmetrically, and one side of the reset spring three is fixedly connected with one side of the cleaning soft brush plate.

10. A method of making a hook according to claim 9, wherein, The upper part of the injection molding machine table is provided with a protective window.

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