Die for manufacturing window-shaped cushion pad
By designing the mold structure of the lower mold, movable inserts, and outer mold, the problems of dimensional stability and demolding of irregularly shaped buffer pads after foaming were solved, realizing a damage-free production process and improving product quality and efficiency.
Patent Information
- Application Number
- CN202520210309.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing technologies make it difficult to control dimensional stability and demolding when manufacturing irregularly shaped cushioning pads, leading to product damage.
Design a mold structure that includes a lower mold, a movable insert, and an outer mold. Through the cooperation of protrusions and channels, ensure that the window-shaped buffer pad can maintain stable dimensions after foaming, and achieve non-destructive demolding by moving the movable insert.
This achieves dimensional stability of the window-shaped buffer pad and prevents damage during the demolding process, thereby improving production efficiency and product quality.
Smart Images
Figure CN223750096U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of cushion manufacturing, especially relates to a mold for manufacturing window-shaped cushion. BACKGROUND
[0002] During the transportation of equipment, due to the uncertainty of the transportation road conditions, in order to ensure the stable and intact transportation of the equipment, a cushion is needed to reduce vibration and impact and stabilize the equipment. The most commonly used at present are foamed rubber pad, foamed rubber EVA plate, foamed TPU pad, etc. Most of them are based on organic macromolecules, and are foamed by physical foaming or chemical foaming through a special shaped mold, so that the rubber becomes a porous product like a sponge. They are usually made of a single material and have different specifications.
[0003] The process of foamed rubber plate is relatively mature, but it is difficult to ensure the dimensional stability of the special-shaped cushion. Moreover, the demolding process is difficult.
[0004] Therefore, it is necessary to improve one or more problems in the above-mentioned related technical solutions.
[0005] It should be noted that this section aims to provide background or context for the technical solutions of the utility model stated in the claims. The description herein is not admitted as prior art merely because it is included in this section. UTILITY MODEL CONTENT
[0006] The purpose of the utility model embodiment is to provide a mold for manufacturing window-shaped cushion, thereby overcoming one or more problems caused by the limitations and defects of related technology to at least some extent.
[0007] The utility model embodiment provides a mold for manufacturing window-shaped cushion, comprising:
[0008] A lower mold horizontally arranged, a movable insert placed on the lower mold, and an outer mold sleeved on the movable insert and placed on the lower mold;
[0009] A protruding module is arranged on the bottom plate of the lower mold, a first groove is arranged on the top surface of the module, a protruding block matching the window of the window-shaped cushion is arranged in the first groove, and the protruding block is higher than the first groove;
[0010] A second groove matching the protruding block is arranged on the bottom surface of the movable insert;
[0011] The outer mold is longitudinally provided with a through hole sleeving the movable insert, the bottom surface of the outer mold is provided with a third groove, the side wall of the third groove is arranged on the bottom plate of the lower mold, and the third groove matches the top surface of the module;
[0012] The bottom surface of the movable insert and the bottom surface of the first channel form a first cavity, and the bottom surface of the outer mold and the bottom surface of the first channel form a second cavity, and the first cavity and the second cavity form a mold cavity for manufacturing the window-shaped cushion.
[0013] In an embodiment of the utility model, the mounting hole is connected with the connecting piece which passes through the connecting hole, and the lower mold and the movable insert are positioned and connected.
[0014] In an embodiment of the utility model, the window-shaped cushion comprises a sponge layer arranged between the first pure glue layer and the second pure glue layer and a polytetrafluoroethylene film which is pasted on the second pure glue layer by an adhesive.
[0015] In an embodiment of the utility model, the lower mold comprises:
[0016] The first lower mold is used for manufacturing the window-shaped cushion and the sponge layer.
[0017] The second lower mold is used for manufacturing the first pure glue layer of the window-shaped cushion.
[0018] The depth of the first channel of the first lower mold is greater than the depth of the first channel of the second lower mold.
[0019] In an embodiment of the utility model, the depth of the first channel of the first lower mold is 9mm-10mm.
[0020] In an embodiment of the utility model, the depth of the first channel of the second lower mold is 1.0mm-1.2mm.
[0021] In an embodiment of the utility model, the module is provided with two protruding blocks which match the windows of the window-shaped cushion.
[0022] In an embodiment of the utility model, the bottom surface of the movable insert is provided with two second channels which match the protruding blocks.
[0023] In an embodiment of the utility model, the top surface of the module is a convex curved surface.
[0024] In an embodiment of the utility model, the bottom surface of the movable insert is a concave curved surface which matches the convex curved surface.
[0025] The technical scheme provided by the embodiment of the utility model can have the following beneficial effects:
[0026] The utility model discloses an embodiment provides a kind of mould of making window-shaped cushion, one hand, the protruding block of the first channel is higher, protruding block supports second channel, window-shaped cushion is foamed after vulcanization, front and rear movement movable insert block is demoulded, avoid the extrusion injury caused by window-shaped cushion window protruding part upper and lower demoulding;On the other hand, the first cavity and the second cavity constitute the mould cavity of making window-shaped cushion, the foaming size of window-shaped cushion is stabilized. BRIEF DESCRIPTION OF DRAWINGS
[0027] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. It is apparent that the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.
[0028] Figure 1 A mould cross section schematic view of making window-shaped cushion with first lower mould in the exemplary embodiment of the utility model is shown.
[0029] Figure 2 A mould cross section schematic view of making window-shaped cushion with second lower mould in the exemplary embodiment of the utility model is shown.
[0030] Figure 3 A cross section schematic view of movable insert block in the exemplary embodiment of the utility model is shown.
[0031] Figure 4 A cross section schematic view of lower mould in the exemplary embodiment of the utility model is shown.
[0032] Figure 5 A structure schematic view of window-shaped cushion in the exemplary embodiment of the utility model is shown.
[0033] Reference signs: 100, lower mould; 101, protruding block; 102, first lower mould; 103, second lower mould; 104, mounting hole; 200, movable insert block; 201, connecting hole; 300, outer mould; 400, connecting piece. DETAILED DESCRIPTION
[0034] Example implementations will now be described with reference to the drawings. However, example implementations can be implemented in various forms and should not be construed as being limited to the examples set forth herein; rather, these implementations are provided so that the present application will be more thoroughly and completely understood, and so that various aspects of example implementations will be conveyed completely to those skilled in the art. Described features, structures, or characteristics can be combined in any suitable manner in one or more implementations.
[0035] In addition, the accompanying drawings are only schematic and are non-limiting. Identical components have been given the same reference numerals in the various drawings and will not be repeatedly described. Some embodiments are shown by way of example in the drawings and will be described in detail below. It goes without saying that the application is not restricted to the embodiments described hereinafter, which are presented by way of example only, but can be used in any of numerous other variations and embodiments. Changes in form and detail can be made without departing from the spirit, and the scope of the application, which can be defined in the appended claims.
[0036] A mold for making a window-shaped cushion is provided in the present example embodiment, and as shown in the drawings, the mold for making a window-shaped cushion can include a lower mold 100, a movable insert 200, and an outer mold 300. Figure 1
[0037] The lower mold 100 is horizontally arranged, the movable insert 200 is arranged on the lower mold 100, and the outer mold 300 is arranged on the movable insert 200 and the lower mold 100.
[0038] A protruding module is arranged on the bottom plate of the lower mold 100, a first groove is arranged on the top surface of the module, a protruding block 101 matching the window of the window-shaped cushion is arranged in the first groove, and the protruding block 101 is higher than the first groove.
[0039] A second groove matching the protruding block 101 is arranged on the bottom surface of the movable insert 200.
[0040] The outer mold 300 is longitudinally provided with a through hole for accommodating the movable insert 200, a third groove is arranged on the bottom surface of the outer mold 300, the side wall of the third groove is arranged on the bottom plate of the lower mold 100, and the third groove matches the top surface of the module.
[0041] The bottom surface of the movable insert 200 and the bottom surface of the first groove form a first cavity, the bottom surface of the outer mold 300 and the bottom surface of the first groove form a second cavity, and the first cavity and the second cavity form a mold cavity for making a window-shaped cushion.
[0042] The mold for making a window-shaped cushion has the following advantages. On the one hand, the protruding block 101 is higher than the first groove, the protruding block 101 supports the second groove, and after the window-shaped cushion is foamed, the movable insert 200 is moved forward and backward to demold, thereby avoiding the extrusion damage caused by the upward and downward demolding of the protruding part of the window of the window-shaped cushion. On the other hand, the first cavity and the second cavity form the mold cavity for making a window-shaped cushion, thereby stabilizing the foaming size of the window-shaped cushion.
[0043] The various parts of the mold for making a window-shaped cushion in the present example embodiment will be described in more detail below. Figures 1 to 5
[0044] In one embodiment, the protruding block 101 is provided with a mounting hole 104 in the longitudinal direction, and a connecting hole 201 is provided from the top surface of the movable insert 200 to the bottom surface of the second groove. The mounting hole 104 is connected with a connecting piece 400 passing through the connecting hole 201 to position and connect the lower mold 100 and the movable insert 200. It should be understood that the connecting piece 400 connects the movable insert 200 and the lower mold 100 and determines the position of the movable insert 200 on the lower mold 100, ensuring the accuracy of the size of the first cavity formed by the bottom surface of the movable insert 200 and the bottom surface of the first groove. It should also be understood that the bottom plate of the lower mold 100 is vertically provided with a positioning pin, the positioning pin is arranged on the side of the mold, and the side wall of the third groove of the outer mold 300 is longitudinally provided with a positioning hole. The side wall of the third groove of the outer mold 300 is arranged on the bottom plate of the lower mold 100 through the cooperation of the positioning pin and the positioning hole.
[0045] In one embodiment, as shown in Figure 5 The window-shaped cushion includes a sponge layer arranged between the first pure rubber layer and the second pure rubber layer, and a polytetrafluoroethylene film adhered to the second pure rubber layer by an adhesive. It should be understood that the first pure rubber layer and the second pure rubber layer are natural rubber 1152, and the formula of the natural rubber 1152 is: natural rubber 100 parts, zinc oxide 15 parts, stearic acid 1 part, antioxidant 4010NA 1 part, antioxidant D 1.5 parts, carbon black N330 35 parts, light calcium 10 parts, 46# machine oil 10 parts, accelerator TE 0.8 parts, accelerator S 1.5 parts, and accelerator DM 1 part.
[0046] The sponge layer is foamed natural rubber HM103, and the formula of the foamed natural rubber HM103 is: natural rubber 100 parts, zinc oxide 5 parts, stearic acid 7 parts, antioxidant D 1.5 parts, foaming agent OBSH 2 parts, expandable microspheres 920DU40 6 parts, carbon black 25 parts, light calcium 30 parts, barium sulfate 30 parts, dibutyl phthalate 15 parts, vaseline 6 parts, accelerator TT 0.5 parts, accelerator S 1.0 parts, and accelerator DM 1.2 parts.
[0047] The adhesive is adhesive 730, and the ratio of adhesive 730-1 to adhesive 730-2 is 1:3.
[0048] The polytetrafluoroethylene film is a single-side sodiumized polytetrafluoroethylene film with a thickness of 0.3 mm.
[0049] The formula of the natural rubber 1152 and the formula of the foamed natural rubber HM103 improve the synergy of the window-shaped cushion material, and the quality of the product is good, and the foaming size of the sponge rubber is stable.
[0050] In one embodiment, the lower mold 100 includes:
[0051] The first lower mold 102 is used for making the window-shaped cushion;
[0052] The second lower mold 103 is used for making the first pure rubber layer of the window-shaped cushion;
[0053] The depth of the first channel of the first lower mold 102 is greater than the depth of the first channel of the second lower mold 103. It should be understood that when making the window-shaped cushion, each layer of the window-shaped cushion needs to be made. When making the first pure rubber layer of the window-shaped cushion and making the window-shaped cushion, different lower molds 100 are needed to make them due to their different thickness requirements. The first lower mold 102 and the second lower mold 103 are replaced at the same time without changing other supporting components, so as to make the window-shaped cushion and the first pure rubber layer of the window-shaped cushion. On the one hand, the work efficiency is improved, and on the other hand, the production cost is reduced.
[0054] In one embodiment, the depth of the first channel of the first lower mold 102 is 9mm-10mm. The depth of the first channel of the second lower mold 103 is 1.0mm-1.2mm. It should be understood that the first pure rubber layer of the window-shaped cushion is made by vulcanization through the second lower mold 103, the movable insert 200 and the outer mold 300. The first pure rubber layer is a first pure rubber layer with a boss. Then the second pure rubber layer is made, and the second pure rubber layer is made by using other vulcanization molds. The natural rubber 1152 is made into a semi-finished product with a thickness of 0.70mm-0.80mm, a width of 560mm-580mm and a length of 560mm-600mm on an open mill. The rubber plate with a thickness of 600x600x0.7 is vulcanized under the conditions of a temperature of 149℃-153℃, a time of 15 minutes and a pressure of 12MPa-15MPa. The rubber plate is the second pure rubber layer. The second pure rubber layer is pasted with a polytetrafluoroethylene film. After the rubber plate is vulcanized, it is placed at room temperature for more than 72h until the size is stable. The surface is polished and treated with sandpaper. The surface is blown clean with a high-pressure air gun. A layer of adhesive 730 is applied. After 4-6 minutes of air drying at room temperature, the sodiumized surface of the polytetrafluoroethylene film is pasted with the adhesive-coated surface of the rubber plate to form a composite rubber plate, and the bubbles are removed. The composite rubber plate is placed in a vulcanization machine under the conditions of a temperature of 149℃-153℃, a time of 15 minutes and a pressure of 2MPa-5MPa for secondary vulcanization.
[0055] In one embodiment, the module is provided with two protrusions 101 matching the windows of the window-shaped cushion. The bottom surface of the movable insert 200 is provided with two second grooves matching the protrusions 101. The top surface of the module is a convex curved surface, and the bottom surface of the movable insert 200 is a concave curved surface matching the convex curved surface. It should be understood that the window-shaped cushion is a double-window curved surface structure, and the two protrusions 101 match the two windows of the window-shaped cushion. The top surface of the module is a convex curved surface. The bottom surface of the movable insert 200 is a concave curved surface matching the convex curved surface, and the mold cavity formed matches the curved surface structure of the window-shaped cushion.
[0056] Use process:
[0057] First, the first pure rubber layer with a boss is vulcanized by the second lower mold 103, the movable insert 200, and the outer mold 300. The semi-finished product of the first pure rubber layer is placed on the second lower mold 103, the movable insert 200 is covered, the connecting piece 400 is fastened, the outer mold 300 is sleeved, and the outer mold 300 is fastened. Under the conditions of a temperature of 149-153 DEG C, a time of 15 minutes, and a pressure of 12-15 MPa, the first pure rubber layer with a boss is vulcanized to a thickness of 1.0-1.2 mm. The second pure rubber layer is vulcanized by replacing the second lower mold with the first lower mold and using other vulcanizing molds. The second pure rubber layer is pasted with a polytetrafluoroethylene film, and then subjected to secondary vulcanization by using other vulcanizing molds. Finally, the second pure rubber layer pasted with the polytetrafluoroethylene film after secondary vulcanization is cut to form a window, placed on the first lower mold 102, and then placed on the sponge layer with a window and the first pure rubber layer with a boss. The movable insert 200 is covered, the connecting piece 400 is fastened, the outer mold 300 is sleeved, and the foaming vulcanization is carried out under the conditions of a temperature of 158-162 DEG C, a time of 30 minutes, and a pressure of 2-5 MPa, so as to form the window-shaped cushion.
[0058] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like in the above description indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the utility model.
[0059] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or an indicated number of features having a certain name. Thus, a feature defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" or "eighth" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.
[0060] In the embodiments of the present application, unless otherwise explicitly and specifically defined, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0061] In the embodiments of the present application, unless otherwise explicitly and specifically defined, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0062] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.
[0063] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
Claims
1. A mold for making a window cushion, comprising a lower mold disposed horizontally, a movable insert disposed on the lower mold, and an outer mold disposed outside the movable insert and on the lower mold, characterized in that, The application relates to a window-shaped cushion production device. The bottom plate of the lower mold is provided with a protruding module, the top surface of the module is provided with a first groove, the first groove is provided with a protruding block matching a window of a window-shaped cushion, and the protruding block is higher than the first groove; The bottom surface of the movable insert is provided with a second groove matching the protruding block; The outer mold is longitudinally provided with a through hole sleeving the movable insert, the bottom surface of the outer mold is provided with a third groove, the sidewall of the third groove is arranged on the bottom plate of the lower mold, and the third groove matches the top surface of the module; The bottom surface of the movable insert and the bottom surface of the first groove form a first cavity, the bottom surface of the outer mold and the bottom surface of the first groove form a second cavity, and the first cavity and the second cavity form a mold cavity for producing the window-shaped cushion.
2. The mold for making a windowed cushion according to claim 1, wherein, The protruding block is longitudinally provided with a mounting hole, a connecting hole is arranged from the top surface of the movable insert to the bottom surface of the second groove, the mounting hole is connected with a connecting piece penetrating through the connecting hole, and the lower mold and the movable insert are positioned and connected.
3. The mold for making a windowed cushion according to claim 1, wherein, The window-shaped cushion comprises a sponge layer arranged between a first pure rubber layer and a second pure rubber layer and a polytetrafluoroethylene film adhered to the second pure rubber layer by an adhesive.
4. The mold for making a windowed cushion according to claim 3, wherein, The lower mold comprises: A first lower mold for producing a window-shaped cushion; A second lower mold for producing a first pure rubber layer of a window-shaped cushion; The depth of the first groove of the first lower mold is greater than the depth of the first groove of the second lower mold.
5. The mold for making a windowed cushion according to claim 4, wherein, The depth of the first groove of the first lower mold is 9mm-10mm.
6. The mold for making a windowed cushion according to claim 5, wherein, The depth of the first groove of the second lower mold is 1.0mm-1.2mm.
7. The mold for making a windowed cushion according to claim 1, wherein, The module is provided with two protruding blocks matching windows of window-shaped cushions.
8. The mold for making a windowed cushion according to claim 7, wherein, The bottom surface of the movable insert is provided with two second grooves matching the protruding blocks.
9. The mold for making a windowed cushion according to claim 1, wherein, The top surface of the module is an upwardly protruding curved surface.
10. The mold for making a windowed cushion according to claim 9, wherein, The bottom surface of the movable insert is an inwardly concave curved surface matching the protruding curved surface.