Novel plastic spring mold structure with four-side sliding blocks
By designing a new plastic spring mold structure with four-sided sliders, the combination of inclined top sliders and push blocks is used to solve the problems of complex structure and high cost of the existing mold, and the mold is compact, easy to process and short forming cycle.
Patent Information
- Application Number
- CN202421400970.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing plastic spring mold has a complex structure, requiring secondary ejection, resulting in a large ejection structure, high mold cost and high maintenance costs.
A new type of plastic spring mold structure with four-sided sliders is designed. By setting an oblique top slider and push block in the upper and lower molds, the springs and rolling members are used to achieve smooth movement of the oblique top slider, reducing the number of ejection structures.
The mold structure is achieved, and the same hole number mold is smaller, saving resources; the mold opening moves smoothly, easy processing, and shorter forming cycle; the upper and lower molds adopt a modular design for easy maintenance and maintenance.
Smart Images
Figure CN222662501U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a new mold structure of a plastic spring with four-sided sliding blocks. Background Art
[0002] For plastic springs, injection molds are usually used for production. The molten raw materials are injected into the cavity of the mold for molding. The workpiece is ejected by the ejector pin in the mold. However, for Figure 1 The workpiece 1 shown in the figure is provided with a plurality of cross elastic ribs 2, so a mold structure with four-sided sliders 5' is required, such as Figure 2 and Figure 3 As shown, when the upper mold 3 and the lower mold 4 are separated, the inclined top slider 5' located on the outside of the workpiece 1 is ejected by the ejector pin 8', and the inclined top slider 5' uses the dovetail structure at the tail to slide with the mold core 9' to move the inclined top slider 5' to the outside of the workpiece 1. At this time, the workpiece 1 located at the top is ejected by the sleeve needle 6' and the sleeve 7' structure to discharge the material.
[0003] However, when the inventor of the present invention implemented this device, he found the following defects: due to the need for secondary ejection, there are at least two sets of ejection structures, such as the ejector pin 8', the sleeve needle 6' and the sleeve 7', to eject the product, which makes the mold structure complicated and also causes the sleeve 7' to be lengthened, making processing difficult, the mold cost high, and the maintenance cost high. Utility Model Content
[0004] Based on this, it is necessary to provide a new plastic spring mold structure with a four-sided slider to address the above technical problems. The structure is compact, the mold with the same number of cavities is smaller, and it can be produced with a smaller machine, saving resources; the mold opening action is smooth, the processing is convenient, and the molding cycle is shorter; the upper and lower molds adopt a modular design and can be maintained and repaired on the machine.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A novel mold structure of a plastic spring with four-sided sliders, comprising:
[0007] An upper mold, a mold core is installed below the upper mold, a mold cavity is arranged in the middle of the mold core, and a plurality of inclined top sliders are arranged around the outer periphery of the mold cavity, with the tops inclined toward the mold cavity, the outer inclined surfaces of the inclined top sliders are in contact with the inner walls of the mold core, and each of the inclined top sliders is connected to the bottom of the upper mold through a spring;
[0008] The lower mold is arranged below the upper mold, and a push plate with a top that matches the lower end surface of the cavity is vertically installed in the lower mold. A plurality of push blocks corresponding to the inclined top sliders are fixed to the outer ring of the push plate, and a buckle position matching the push block is opened on the inner side of each inclined top slider.
[0009] As a preferred embodiment of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, the bottom of the inclined top slider contacts the upper end surface of the lower mold, and a rolling piece is installed at the bottom of each inclined top slider.
[0010] As a preferred implementation of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, the spring is parallel to the outer side surface of the inclined top slider.
[0011] As a preferred implementation of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, the upper end surface of the push block is an inclined surface.
[0012] As a preferred implementation of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, a lower die punch is installed in the middle of the push plate.
[0013] As a preferred implementation of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, a cooling liquid channel is opened in the mold core.
[0014] As a preferred embodiment of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, cooling channels are provided in the lower die punch and the lower die.
[0015] As a preferred implementation of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, the outer ring of each cavity is provided with four inclined top sliders.
[0016] As a preferred implementation of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, four mold cavities are arranged in each mold core.
[0017] As a preferred embodiment of the novel mold structure of a plastic spring with four-sided sliders provided by the utility model, an injection hot nozzle is installed on the upper mold, and the output end of the injection hot nozzle extends to the top of the cavity.
[0018] Compared with the prior art, the utility model has the following beneficial effects:
[0019] The utility model provides a new mold structure for a plastic spring with four-sided sliders, which has a compact structure, a smaller mold with the same number of cavities, and can be produced with a smaller machine, saving resources; the mold opening action is smooth, the processing is convenient, and the molding cycle is shorter; the upper mold and the lower mold adopt a modular design and can be maintained and repaired on the machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 It is a schematic diagram of the plastic spring structure;
[0022] Figure 2 It is a schematic diagram of the structure of the mold core and the inclined top slider in the existing mold;
[0023] Figure 3 It is a schematic diagram of the existing mold structure;
[0024] Figure 4 A cross-sectional view of the mold provided by the utility model;
[0025] Figure 5 The structure of the mold core and the inclined top slider provided by the utility model is schematically shown Figure 1 ;
[0026] Figure 6 The structure of the mold core and the inclined top slider provided by the utility model is schematically shown Figure 2 ;
[0027] Figure 7 This is a cross-sectional view of the push plate and the inclined top sliding block provided by the utility model.
[0028] The markings in the figure are as follows:
[0029] 1. Workpiece; 2. Rib position; 3. Upper die; 4. Lower die; 5', inclined top slider; 6', sleeve needle; 7', sleeve; 8', ejector pin; 9', mold core; 5. Push plate; 6. Spring; 7. Mold core; 8. Push block; 9. Buckle position; 10. Rolling element; 11. inclined top slider; 12. Lower die punch; 13. Coolant channel; 14. Injection hot nozzle. DETAILED DESCRIPTION
[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0031] As described in the background technology, due to the need for secondary ejection, there are at least two groups of ejection structures such as the ejector pin 8', the sleeve needle 6' and the sleeve 7' to eject the product, which makes the mold structure complicated and also causes the sleeve 7' to be lengthened, making processing difficult, the mold cost high, and the maintenance cost high.
[0032] Specifically, please refer to Figures 4 to 7 A new mold structure for a plastic spring with four-sided sliders, comprising: an upper mold 3 and a lower mold 4; a mold core 7 is installed below the upper mold 3, a cavity is arranged in the middle of the mold core 7, and a plurality of inclined top sliders 11 are arranged around the outer periphery of the cavity, and the tops of the inclined top sliders 11 are inclined toward the cavity, and the outer inclined surfaces of the inclined top sliders 11 are in contact with the inner walls of the mold core 7, and each of the inclined top sliders 11 is connected to the bottom of the upper mold 3 through a spring 6; the lower mold 4 is arranged below the upper mold 3, and a push plate 5 whose top matches the lower end surface of the cavity is vertically installed in the lower mold 4, and a plurality of push blocks 8 corresponding to the inclined top sliders 11 are fixed to the outer ring of the push plate 5, and a buckle position 9 matching the push block 8 is opened on the inner side of each of the inclined top sliders 11.
[0033] The utility model provides a new mold structure of a plastic spring with four-sided sliders. After the injection molding of the cavity is completed, the mold core 7 is driven to move upward when the upper mold 3 is opened upward. At this time, the upper mold 3 drives the upper end of the spring 6 to move, and the elastic force of the spring 6 is used to push the bottom of the inclined top slider 11 to fit the top of the lower mold 4. In the process, since a push block 8 is provided on the outer wall of the push plate 5, the inclined top slider 11 will be moved outward by the guiding effect of the push block 8 during the process of pushing the inclined top slider 11 to move, so that the outer wall of the inclined top slider 11 is always in contact with the inner wall of the mold core 7. Therefore, the inclined top slider 11 can be controlled to move toward the periphery of the cavity and completely separate from the cavity, and the workpiece 1 is pushed out by the push plate 5.
[0034] The mold of the present application has the following advantages: compact structure, smaller molds with the same number of cavities, can be produced with smaller machines, saving resources; smooth mold opening action, convenient processing, and shorter molding cycle; the upper and lower molds adopt a modular design and can be maintained and repaired on the machine.
[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0038] Please refer to Figures 4 to 7 A new mold structure for a plastic spring with four-sided sliders, a mold core 7 is installed below the upper mold 3, a mold core 7 is provided in the middle of the mold core 7, and a plurality of inclined top sliders 11 are arranged around the outer periphery of the mold core, with the top inclined toward the mold cavity, the outer inclined surface of the inclined top slider 11 is in contact with the inner wall of the mold core 7, each inclined top slider 11 is connected to the bottom of the upper mold 3 through a spring 6, the bottom of the inclined top slider 11 is in contact with the upper end surface of the lower mold 4, and a rolling member 10 is installed at the bottom of each inclined top slider 11, when the spring 6 pushes the inclined top slider 11 to move, the rolling member 10 at the bottom of the inclined top slider 11 rolls along the top of the lower mold 4, and the traditional inclined top mold closing is changed to rolling friction, which ensures smooth mold opening and avoids burning.
[0039] Furthermore, the spring 6 is parallel to the outer side surface of the inclined top slider 11 , so that the elastic force of the spring 6 can better push the inclined top slider 11 toward the outside of the cavity, so that it is separated from the workpiece 1 in the cavity.
[0040] It is worth mentioning that the lower mold 4 is arranged below the upper mold 3, and a push plate 5 whose top matches the lower end surface of the cavity is vertically installed in the lower mold 4. A plurality of push blocks 8 corresponding to the inclined top slider 11 are fixed to the outer ring of the push plate 5. A buckle position 9 matching the push block 8 is provided on the inner side of each inclined top slider 11. The upper end surface of the push block 8 is an inclined surface. When the spring 6 pushes the inclined top slider 11 to move, the buckle position 9 provided on the inclined top slider 11 will move along the top inclined surface of the push block 8, and will be pushed to the outside of the cavity by the top inclined surface of the push block 8, so that it can move horizontally stably.
[0041] Preferably, the outer ring of each cavity is provided with four inclined top sliders 11, and each mold core 7 is provided with four cavities, so as to better produce the workpiece 1 quickly and efficiently, with a simple structure, smooth mold opening action, convenient processing and a shorter molding cycle.
[0042] In this embodiment, a lower die punch 12 is installed in the middle of the push plate 5, and the lower die punch 12 is used to position and support the workpiece 1 in the cavity.
[0043] In addition, a cooling liquid channel 13 is opened in the mold core 7, and a cooling liquid channel 13 is opened in the lower mold punch 12 and the lower mold 4. The mold structure of the present application is compact, simple, and the mold opening action is smooth. It is convenient to design a variety of cooling water channels in the mold for rapid cooling of the mold, so that it can achieve the effect of convenient processing and shorter molding cycle.
[0044] In addition, an injection nozzle 14 is installed on the upper mold 3 , and the output end of the injection nozzle 14 extends to the top of the cavity. The injection molding machine injects the molten raw material into the cavity through the injection nozzle 14 to achieve rapid molding of the workpiece 1 .
[0045] The mold designed in this application has a compact structure, and the mold with the same number of cavities is smaller, so it can be produced with a smaller machine, saving resources; the mold core has added a water channel, and the inclined top mold closing is changed to rolling friction to ensure smooth mold opening and avoid burning; the structure is simple, the mold opening action is smooth, the processing is convenient, and the molding cycle is shorter; full hot glue feeding can be used to eliminate waste and shorten the cycle; the upper and lower molds adopt a modular design, and can be maintained and repaired on the machine, which is convenient for subsequent repairs and maintenance.
[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0047] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.
Claims
1. A new mold structure for a plastic spring with four-sided sliders, characterized in that: It includes: An upper mold (3), wherein a mold core (7) is installed below the upper mold (3), a mold core (7) is provided in the middle of the mold core (7), and a plurality of inclined top sliders (11) are arranged around the periphery of the mold core and are inclined toward the mold cavity, wherein the outer inclined surfaces of the inclined top sliders (11) are in contact with the inner wall of the mold core (7), and each of the inclined top sliders (11) is connected to the bottom of the upper mold (3) via a spring (6); The lower mold (4) is arranged below the upper mold (3), and a push plate (5) whose top matches the lower end surface of the cavity is vertically installed in the lower mold (4). A plurality of push blocks (8) corresponding to the inclined top sliders (11) are fixed to the outer ring of the push plate (5), and a buckle position (9) matching the push block (8) is formed on the inner side of each inclined top slider (11).
2. A novel mold structure for a plastic spring with four-sided sliders according to claim 1, characterized in that: The bottom of the inclined top slider (11) contacts the upper end surface of the lower mold (4), and a rolling element (10) is installed at the bottom of each inclined top slider (11).
3. The novel mold structure of a plastic spring with four-sided sliders according to claim 1, characterized in that: The spring (6) is parallel to the outer side surface of the inclined top slider (11).
4. The novel mold structure of a plastic spring with four-sided sliders according to claim 1, characterized in that: The upper end surface of the push block (8) is an inclined surface.
5. The novel mold structure of a plastic spring with four-sided sliders according to claim 1, characterized in that: A lower die punch (12) is installed in the middle of the push plate (5).
6. The novel mold structure of a plastic spring with four-sided sliders according to claim 5, characterized in that: A cooling liquid channel (13) is provided in the mold core (7).
7. The novel mold structure of a plastic spring with four-sided sliders according to claim 6, characterized in that: A cooling liquid channel (13) is provided in the lower die punch (12) and the lower die (4).
8. The novel mold structure of a plastic spring with four-sided sliders according to claim 1, characterized in that: The outer ring of each cavity is provided with four inclined top sliding blocks (11).
9. The novel mold structure of a plastic spring with four-sided sliders according to claim 1, characterized in that: Four cavities are arranged in each mold core (7).
10. The novel mold structure of a plastic spring with four-sided sliders according to claim 1, characterized in that: An injection hot nozzle (14) is mounted on the upper mold (3), and an output end of the injection hot nozzle (14) extends to the top of the mold cavity.