Exhaust structure of injection mold
By designing the exhaust structure of the injection mold, the vibration motor and automatic exhaust components are used to solve the problems of poor connectivity and poor exhaust effect of the injection mold, and high-quality injection molding is achieved, avoiding bubbles or depressions on the surface of the molded product. , and stabilizes the injection molding pressure.
Patent Information
- Application Number
- CN202421025645.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The connection between the mold on the injection mold and the lower mold is poor, resulting in butt deviation during injection molding and poor exhaust effect, resulting in bubbles or depressions on the surface of the molded product, affecting product quality.
An injection mold exhaust structure is designed, including a base, a lower mold, an upper mold, a vibration motor, a connecting assembly, an injection molding assembly, an air guide groove, an exhaust assembly and a closure assembly. The vibrating motor quickly vibrates the mold to discharge the air in the plastic solution, and the air conductor tank and exhaust components realize automatic exhaust gas, ensuring that the gas is effectively discharged at high pressure and avoiding air being interspersed in the plastic melt.
Improve the connectivity between the upper mold and the lower mold, avoid butt deviation during injection molding, improve the injection molding quality, and prevent air from being interspersed in the plastic melt through automatic exhaust function, reducing bubbles or depressions on the surface of the molded product, and stabilizing Injection molding pressure improves product quality.
Smart Images
Figure CN222431471U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold exhaust structure. Background Art
[0002] An injection mold is a tool used to produce plastic products. It is obtained by injecting thermoplastic or thermosetting materials into the mold to shape and solidify them, thereby obtaining the desired plastic product. An injection mold usually consists of two parts: a fixed mold and a movable mold. During the injection molding process, these two parts will close to form a closed cavity, and the material is injected into this cavity. The design and manufacture of injection molds are the key links in injection molding, which directly affect production efficiency, product quality and production cost. Therefore, the flow characteristics of the material, the cooling process, the demoulding method and other factors need to be fully considered during the design to ensure that the final molded plastic product meets the requirements. The application range of injection molds is very wide, and they can be used to manufacture various plastic parts, such as automotive accessories, electronic product housings, household appliances, toys, etc. With the development of the plastics industry, the technology of injection molds is also constantly improving, including the improvement of mold materials, the innovation of processing methods and the optimization of mold structures.
[0003] Although the injection mold has many advantages, it still has some shortcomings. For example, the connectivity between the upper mold and the lower mold is not good, which easily causes the docking deviation between the upper mold and the lower mold during injection molding, making it difficult to ensure the injection molding quality, and its exhaust effect is not good. During the injection molding process, the hot plastic melt is injected into the mold under high pressure. If the air in the mold is not discharged in time, it will be compressed and mixed in the plastic melt, resulting in bubbles or depressions on the surface of the molded product. At the same time, too much air will also cause fluctuations in the injection molding pressure, affecting the product quality. Therefore, an injection mold exhaust structure is proposed to address the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide an injection mold exhaust structure, which has better connectivity between the upper mold and the lower mold, so it is not easy to cause docking deviation between the upper mold and the lower mold during injection molding, thereby ensuring the injection molding quality, and its exhaust effect is better, and it can automatically exhaust when the internal air pressure reaches a certain level, avoiding air from being compressed and mixed in the plastic melt, resulting in bubbles or depressions on the surface of the molded product, and at the same time avoiding fluctuations in injection pressure caused by excessive air, thereby ensuring product quality, so as to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An injection mold exhaust structure comprises a base, a lower mold is arranged above the base, a vibration motor is arranged at the bottom of the lower mold, an upper mold is arranged above the lower mold, connecting components are symmetrically arranged on the lower mold and the upper mold, an injection cavity is arranged in the inner cavity of the lower mold and the upper mold, an injection component is arranged at the center of the upper mold, air guide grooves are symmetrically opened on the inner side wall of the upper mold, the inner cavity of the air guide grooves is provided with exhaust components and the top of the air guide grooves is connected to an exhaust groove, and a closing component is arranged above the exhaust groove.
[0007] Preferably, a connecting rod is provided between the base and the lower mold, and upper and lower ends of the connecting rod are flexibly connected to the four corners of the bottom of the lower mold and the four corners of the top of the base.
[0008] Preferably, the connecting assembly includes a T-shaped card block fixedly connected to the bottom of the upper mold, and the two side walls of the T-shaped card block are symmetrically and fixedly connected with rubber card blocks, and the top of the lower mold is provided with a connecting card groove corresponding to the position of the T-shaped card block and the rubber card block and matching the specifications.
[0009] Preferably, the injection molding assembly includes an injection molding bucket fixedly connected to the top center of the upper mold and an injection molding groove opened at the center of the top wall of the upper mold, the bottom of the injection molding bucket is connected to the injection molding groove and the top of the injection molding bucket is hinged with a bucket cover.
[0010] Preferably, the exhaust assembly includes a hinge shaft arranged symmetrically in the longitudinal direction, an exhaust baffle is hinged on the hinge shaft and an attractive magnetic sheet is provided at the end of the exhaust baffle, a return spring is provided on the rear side of the exhaust baffle, one end of the return spring is fixedly connected to the rear wall of the exhaust baffle through a connecting seat, and the other end is fixedly connected to the inner wall of the air guide groove through a connecting seat.
[0011] Preferably, the sealing component includes rubber connecting strips arranged at both ends of the top of the upper mold, and the ends of the rubber connecting strips are fixedly connected with sealing plugs. The sealing plugs are arranged to match the specifications of the exhaust grooves and the sealing plugs are inserted at the top of the exhaust grooves.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] In the utility model, the lower mold can be connected and supported by the provided base and connecting support rod, the lower mold can be quickly vibrated during or after injection molding by the provided vibration motor, so that the air in the plastic melt can be quickly discharged, the plastic melt can be shaped by the provided lower mold and upper mold, and the provided connection component can provide good connectivity between the lower mold and the upper mold, so it is not easy to cause docking deviation between the upper mold and the lower mold during injection molding, thereby ensuring the injection molding quality, and the provided injection molding component can introduce the plastic melt into the injection molding cavity for injection molding, and the provided air guide groove can introduce the air into the exhaust groove and finally discharge it through the exhaust groove, and the provided exhaust component can automatically exhaust when the air pressure inside the injection molding cavity reaches a certain level, so as to avoid air being compressed and mixed in the plastic melt, resulting in bubbles or depressions on the surface of the molded product, and at the same time, it can also avoid fluctuations in injection pressure caused by excessive air, thereby ensuring product quality, and the provided closing component can close and protect the exhaust groove when no exhaust is required, so as to prevent other impurities from entering the air guide groove through the exhaust groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is the front view of the utility model;
[0015] Figure 2 The structure of the utility model is shown in FIG. Figure 1 ;
[0016] Figure 3 The structure of the utility model is shown in FIG. Figure 2 ;
[0017] Figure 4 It is a structural schematic diagram of the connection assembly of the utility model;
[0018] Figure 5 It is a structural schematic diagram of the air guide groove of the utility model;
[0019] Figure 6 It is a schematic structural diagram of the exhaust assembly of the utility model.
[0020] In the figure: 1. base; 2. lower mold; 3. vibration motor; 4. connecting support rod; 5. upper mold; 6. connecting assembly; 601. T-shaped block; 602. rubber block; 603. connecting slot; 7. injection molding assembly; 701. injection molding bucket; 702. injection molding slot; 8. air guide slot; 9. exhaust assembly; 901. exhaust baffle; 902. attraction magnetic sheet; 903. reset spring; 10. exhaust slot; 11. closing assembly; 1101. rubber connecting strip; 1102. sealing plug. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0024] See also Figure 1-6 , the utility model provides a technical solution:
[0025] An injection mold exhaust structure includes a base 1, a lower mold 2 is provided above the base 1, a vibration motor 3 is provided at the bottom of the lower mold 2, an upper mold 5 is provided above the lower mold 2, a connecting component 6 is symmetrically provided on the lower mold 2 and the upper mold 5, an injection cavity is provided in the inner cavity of the lower mold 2 and the upper mold 5, an injection component 7 is provided at the center of the upper mold 5, an air guide groove 8 is symmetrically opened on the inner side wall of the upper mold 5, an exhaust component 9 is provided in the inner cavity of the air guide groove 8, and an exhaust groove 10 is connected to the top of the air guide groove 8, and a closing component 11 is provided above the exhaust groove 10.
[0026] A connecting rod 4 is provided between the base 1 and the lower mold 2, and the upper and lower ends of the connecting rod 4 are flexibly connected to the four corners of the bottom of the lower mold 2 and the four corners of the top of the base 1. The flexible connection can reduce the vibration stress generated by the vibration motor 3 when driving the lower mold 2 to vibrate; the connecting component 6 includes a T-shaped card block 601 fixedly connected to the bottom of the upper mold 5, and the two side walls of the T-shaped card block 601 are symmetrically and fixedly connected with a rubber card block 602, and the top of the lower mold 2 is provided with a rubber card block 602 corresponding to the position of the T-shaped card block 601 and the rubber card block 602 and matching the specifications. The connecting card slot 603 of the connecting component 6 can provide good connectivity between the lower mold 2 and the upper mold 5, so it is not easy to cause docking deviation between the upper mold 2 and the lower mold 5 during injection molding, thereby ensuring the injection molding quality; the injection molding component 7 includes an injection molding bucket 701 fixedly connected to the center of the top of the upper mold 5 and an injection molding groove 702 opened at the center of the top wall of the upper mold 5. The bottom of the injection molding bucket 701 is connected to the injection molding groove 702 and the top of the injection molding bucket 701 is hinged with a bucket cover. The injection molding component 7 can introduce the plastic melt into the injection molding cavity for injection. Plastic molding; the exhaust component 9 includes a hinge shaft arranged symmetrically in the longitudinal direction, an exhaust baffle 901 is hinged on the hinge shaft, and an attractive magnetic sheet 902 is provided at the end of the exhaust baffle 901, and a return spring 903 is provided on the rear side of the exhaust baffle 901, one end of the return spring 903 is fixedly connected to the rear wall of the exhaust baffle 901 through a connecting seat, and the other end is fixedly connected to the inner wall of the air guide groove 8 through a connecting seat. The exhaust component 9 can automatically exhaust when the air pressure inside the injection molding cavity reaches a certain level, so as to avoid air being compressed and mixed in the plastic melt, resulting in the surface of the molded product being damaged. Bubbles or depressions can be avoided, and at the same time, fluctuations in injection pressure caused by excessive air can be avoided, thereby ensuring product quality; the closing component 11 includes rubber connecting strips 1101 arranged at both ends of the top of the upper mold 5, and the ends of the rubber connecting strips 1101 are fixedly connected with sealing plugs 1102. The sealing plug 1102 is matched with the exhaust groove 10 in specifications and the sealing plug 1102 is inserted at the top of the exhaust groove 10. The closing component 11 can seal and protect the exhaust groove 10 when no exhaust is required, so as to prevent other impurities from entering the air guide groove 8 through the exhaust groove 10.
[0027] Working process: the base 1 and the connecting support rod 4 can connect and support the lower mold 2, the vibration motor 3 can quickly vibrate the lower mold 2 during or after injection molding, so as to quickly discharge the air in the plastic melt, the lower mold 2 and the upper mold 5 can shape the plastic melt, the connecting component 6 can provide good connectivity between the lower mold 2 and the upper mold 5, so it is not easy to cause docking deviation between the upper mold 2 and the lower mold 5 during injection molding, thereby ensuring the injection molding quality, when connecting, it is only necessary to align the upper mold 5 with the lower mold 2, at this time the T-shaped card block 601 and the rubber card block 602 will be inserted into the connecting card slot 603 and connected with the connecting card slot 603, the injection molding bucket 701 in the injection molding component 7 can introduce the plastic melt into the injection molding cavity through the injection molding groove 702 for injection molding, the air guide groove 8 can introduce the air into the exhaust groove 10 and finally discharge it through the exhaust groove 10, the exhaust component 9 can automatically exhaust when the air pressure inside the injection molding cavity reaches, The air is prevented from being compressed and mixed in the plastic melt, resulting in bubbles or depressions on the surface of the molded product. At the same time, it can also prevent fluctuations in injection pressure caused by excessive air, thereby ensuring product quality. During exhaust, when the air pressure inside the injection molding cavity reaches a certain level, the air will enter the air guide groove 8 and squeeze the exhaust baffle 901. After being squeezed, the exhaust baffle 901 rotates through the hinge shaft, so that the air guide groove 8 closed by the two exhaust baffles 901 that conflict with each other is opened, and the air is finally discharged through the exhaust groove 10. When the air pressure in the injection molding cavity decreases, the exhaust baffle 901 will rotate and reset through the rebound force of the reset spring 903 itself, and at the same time, it will be magnetically attracted to each other by the attraction magnetic sheet 902, so that the air guide groove 8 is closed. The sealing component 11 can seal and protect the exhaust groove 10 when not exhausting, to prevent other impurities from entering the air guide groove 8 through the exhaust groove 10. When closing, just insert the sealing plug 1102 into the exhaust groove 10 for sealing.
[0028] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and scope of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An injection mold exhaust structure, comprising a base (1), characterized in that: A lower mold (2) is provided above the base (1), a vibration motor (3) is provided at the bottom of the lower mold (2), an upper mold (5) is provided above the lower mold (2), a connecting component (6) is symmetrically provided on the lower mold (2) and the upper mold (5), an injection cavity is provided in the inner cavity of the lower mold (2) and the upper mold (5), an injection component (7) is provided at the center of the upper mold (5), an air guide groove (8) is symmetrically provided on the inner side wall of the upper mold (5), an exhaust component (9) is provided in the inner cavity of the air guide groove (8), and an exhaust groove (10) is provided at the top of the air guide groove (8), and a closing component (11) is provided above the exhaust groove (10).
2. The injection mold exhaust structure according to claim 1, characterized in that: A connecting rod (4) is provided between the base (1) and the lower mold (2), and the upper and lower ends of the connecting rod (4) are flexibly connected to the four corners of the bottom of the lower mold (2) and the four corners of the top of the base (1).
3. The injection mold exhaust structure according to claim 1, characterized in that: The connecting assembly (6) comprises a T-shaped card block (601) fixedly connected to the bottom of the upper mold (5), and two side walls of the T-shaped card block (601) are symmetrically and fixedly connected with rubber card blocks (602), and the top of the lower mold (2) is provided with a connecting card slot (603) corresponding to the position of the T-shaped card block (601) and the rubber card block (602) and matching in specifications.
4. The injection mold exhaust structure according to claim 1, characterized in that: The injection molding assembly (7) comprises an injection molding bucket (701) fixedly connected to the top center of the upper mold (5) and an injection molding groove (702) opened at the center of the top wall of the upper mold (5); the bottom of the injection molding bucket (701) is connected to the injection molding groove (702) and the top of the injection molding bucket (701) is hinged with a bucket cover.
5. The injection mold exhaust structure according to claim 1, characterized in that: The exhaust assembly (9) comprises a hinge shaft which is symmetrically arranged in the longitudinal direction, an exhaust baffle (901) is hingedly connected to the hinge shaft, and an end of the exhaust baffle (901) is provided with an attracting magnetic sheet (902), a return spring (903) is provided on the rear side of the exhaust baffle (901), one end of the return spring (903) is fixedly connected to the rear wall of the exhaust baffle (901) via a connecting seat, and the other end is fixedly connected to the inner wall of the air guide groove (8) via a connecting seat.
6. The injection mold exhaust structure according to claim 1, characterized in that: The sealing component (11) comprises rubber connecting strips (1101) arranged at both ends of the top of the upper mold (5), and the ends of the rubber connecting strip (1101) are fixedly connected with sealing plugs (1102), the sealing plugs (1102) and the exhaust grooves (10) are arranged with matching specifications and the sealing plugs (1102) are inserted into the top of the exhaust grooves (10).