Leakage-proof plugging structure for water path of injection mold
By installing water stop bolts, filler layers and secondary sealing structures at the end of the injection mold waterway, the water leakage problem caused by the low accuracy of the bottom hole of the core screw is solved, and the sealing performance is significantly improved.
Patent Information
- Application Number
- CN202421169203.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The processing accuracy of the screw bottom holes on the injection mold waterways is low, resulting in frequent water leakage.
Water stop bolts are provided at the end of the injection mold waterway, and a filler layer is added between its outer peripheral surface and the core, and sealing and pressing components such as cover plates or columnar water stop bolts are further added to form a secondary seal to improve sealing performance.
By adding the secondary sealing structure, the sealing performance of the injection mold waterway is significantly improved, effectively preventing cooling water from leaking.
Smart Images
Figure CN222521967U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of injection molds, in particular to a leak-proof plugging structure for a water channel of an injection mold. Background Art
[0002] Injection molds are usually equipped with multiple groups of cooling water channels 11 that are staggered horizontally and vertically for cooling during operation. Due to structural reasons, sealing structures are required at the intersections of some water channels and the outer peripheral surface of the mold to ensure that the cooling water flows along the designed path. Conventional sealing structures generally use PT-1 / 4" water stop bolts 12 plus sealing fillers to prevent water leakage. Although headless screws are easy to install and remove, due to the low machining accuracy of the screw bottom hole on the core 10, water leakage is prone to occur. Utility Model Content
[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a leak-proof sealing structure for the water channel of an injection mold, so as to further improve the sealing performance of the end of the cooling water channel.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A leak-proof sealing structure for the water channel of an injection mold, wherein a plurality of cooling water channels are provided through the core of the mold, and water-stop bolts are arranged at the ends of the cooling water channels to seal the cooling water channels and prevent the cooling water from leaking to the template, and a filling layer is provided between the outer peripheral surface of the water-stop bolt and the core to further prevent water leakage, and a sealing clamping component is also provided between the water-stop bolt and the template, and the sealing clamping component is fixed on the core and forms a secondary seal on the outer side of the water-stop bolt.
[0006] In a preferred embodiment of the present invention, the sealing and pressing component is a cover plate fixed to the core by at least one fastener.
[0007] In a preferred embodiment of the present invention, a sealing sheet for sealing is provided on the side of the cover plate facing the core.
[0008] In a preferred embodiment of the present invention, the sealing and clamping component is a columnar water stopper, a columnar hole is correspondingly opened at the end of the cooling water channel, and the water stopper is embedded in the columnar hole to achieve secondary sealing.
[0009] In a preferred embodiment of the present utility model, the columnar water stopper is an expansion type water stopper.
[0010] The beneficial effects of the utility model are:
[0011] The leak-proof sealing structure for the water channel of an injection mold provided by the utility model adds a secondary sealing structure on the outer side of a water stop bolt to improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.
[0013] Figure 1 It is a mold schematic diagram of the prior art.
[0014] Figure 2 yes Figure 1 Schematic diagram of the cooling water circuit.
[0015] Figure 3 It is a cooling water channel blocking structure diagram in the prior art.
[0016] Figure 4 yes Figure 1 Cross-sectional view of BB.
[0017] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle.
[0018] Figure 6 It is a schematic diagram of a second embodiment of the present utility model. DETAILED DESCRIPTION
[0019] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. The above description is simplified for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.
[0020] In the specification, when an element is said to be "on", "fixed" to, "connected" to, "engaged" to, etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or there may be intervening elements. In the specification, when a feature is arranged "adjacent" to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.
[0021] The following will describe exemplary embodiments of the present application with reference to the accompanying drawings. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all drawings, the same reference numerals represent the same or functionally identical elements.
[0022] refer to Figure 4 and Figure 5 In the end structure of the cooling water channel shown, the end of the cooling water channel 11 is still sealed once to prevent water leakage by setting a water stop bolt 12 and setting a filler 13 between the outer circumference of the water stop bolt 12 and the core 10. It is understandable that the filler 13 can be wound around the outer circumference of the water stop bolt 12 in the form of a raw tape. A cylindrical hole 14 is further opened at the end of the cooling water channel 11, and the cylindrical hole 14 is connected to the outside of the water stop bolt 12. A cylindrical water stop plug 15 is arranged in the cylindrical hole 14, thereby forming a second seal on the outside of the water stop bolt 12. It is understandable that the cylindrical water stop plug 15 can be an expansion water stop plug 15, so as to achieve better sealing.
[0023] Figure 6 A second embodiment of the utility model is provided, in which a sealing cover plate 30 is added to the core 10, and the cover plate 30 is locked on the core 10 by at least one fastener 32 and establishes a second seal between the water stop bolt 12 and the template 20. Furthermore, a sealing sheet is arranged on the adjacent surface of the cover plate 30 and the water stop bolt 12 to prevent cooling water from leaking from the water stop bolt 12 to the template 20. It is understandable that the fastener 32 can be fixed by standard parts such as hexagon socket bolts, so that the cover plate 30 can be quickly disassembled during maintenance.
Claims
1. A leak-proof plugging structure for water channels of an injection mold, wherein a plurality of cooling water channels are provided through the core of the mold, and water stop bolts are arranged at the ends of the cooling water channels to plug the cooling water channels and prevent cooling water from leaking to the mold plate, and a filler is further provided between the outer circumference of the water stop bolt and the core to further prevent water leakage, characterized in that: A sealing and pressing component is also provided between the water stop bolt and the template. The sealing and pressing component is fixed on the core and forms a secondary seal on the outer side surface of the water stop bolt.
2. The anti-leakage sealing structure for the water channel of the injection mold according to claim 1, characterized in that: The sealing and pressing component is a cover plate fixed on the core by at least one fastener.
3. The anti-leakage sealing structure for the water channel of the injection mold according to claim 2, characterized in that: A sealing sheet for sealing is arranged on the side of the cover plate facing the core.
4. The anti-leakage sealing structure for the water channel of the injection mold according to claim 1, characterized in that: The sealing and pressing component is a columnar water stopper, and a columnar hole is correspondingly opened at the end of the cooling water channel. The water stopper is embedded in the columnar hole to achieve secondary sealing.
5. The anti-leakage sealing structure for the water channel of the injection mold according to claim 4, characterized in that: The columnar water stopper is an expansion type water stopper.