Die for forming silica gel product
By improving the mold design and utilizing hinge connections and ejector pin slide structures, the problem of difficult demolding in traditional molds has been solved, enabling efficient and non-destructive demolding and precise molding of silicone products, thereby improving production efficiency and yield.
Patent Information
- Application Number
- CN202520115736.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Traditional silicone product molding molds are prone to product deformation and cracking during demolding, and inserts may wear and loosen, affecting yield and production efficiency.
The design employs an upper and lower mold, with first and second molding inserts on the lower mold. The second molding insert is movably connected to the first molding insert via a hinge, and combined with the ejector pin and slide groove design, flexible demolding is achieved.
It improved the yield rate of silicone products, shortened the demolding time, reduced mold maintenance costs and replacement frequency, and ensured the molding accuracy and production efficiency of the products.
Smart Images
Figure CN223812242U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mould technical field, concretely is a mould for silicone product forming. BACKGROUND
[0002] In the modern industrial production field, silicone products have been widely used in many industries such as electronics, medical treatment, food and so on due to their excellent flexibility, corrosion resistance and good insulation performance. Especially tubular silicone products, due to their special structure and performance requirements, play an irreplaceable role in some specific scenarios. With the continuous rise of market demand for such tubular silicone products, the requirements for their forming process and mould technology are becoming increasingly stringent.
[0003] The traditional silicone product forming mould exposes many problems when dealing with the production of tubular products. In the demoulding link, due to the special wrapped shape of the tubular product, the conventional demoulding method is difficult to realize efficient and damage-free demoulding. The traditional mould often adopts a simple whole ejection structure, when the tubular silicone product is ejected, the product is tightly wrapped on the forming insert, and it is difficult to separate smoothly, which easily leads to product deformation and rupture, greatly reducing the yield of the product. Moreover, this ejection method also prolongs the demoulding time, seriously affecting the production efficiency.
[0004] In terms of forming inserts, the insert structure design for forming tubular products in the traditional mould is not reasonable. For example, the forming inserts are usually fixedly connected, which cannot adapt to the complex demoulding requirements of tubular products. When the product is wrapped on the insert, due to the inability of the insert to flexibly separate, the demoulding process is difficult. Moreover, after the traditional mould is used for many times, the insert is prone to wear, looseness and other problems, which not only affects the forming precision of the product, but also increases the maintenance cost and replacement frequency of the mould.
[0005] Therefore, it is necessary to provide an improved technical scheme to solve the above problems. UTILITY MODEL CONTENT
[0006] The utility model aims at providing a technical scheme that can solve the above problems.
[0007] A mould for silicone product forming, comprising an upper mould and a lower mould, the upper mould and the lower mould are mutually butted to form a mould cavity for forming products, the lower mould is provided with a first forming insert and a second forming insert at a position corresponding to the mould cavity, a first sliding groove corresponding to the first forming insert and a second sliding groove corresponding to the second forming insert are opened along the parting surface of the lower mould;
[0008] A hinge is installed on the second sliding groove, the second forming insert has a first end and a second end, the first end of the second forming insert is hinged to the hinge, and the second end of the second forming insert is movably connected to one side of the first forming insert.
[0009] A top plate is movably connected in the lower mold, a top rod is connected in a longitudinal direction along an end surface of the top plate, and an upper end of the top rod is connected and matched with one end of the first forming insert.
[0010] As a further scheme of the utility model, the first forming insert has a third end and a fourth end, a sleeve opening is formed in the bottom of the third end of the first forming insert, and the sleeve opening is sleeved and matched with the upper end of the top rod.
[0011] The third end of the first forming insert is outwardly extended to form a connecting portion, and the connecting portion movably abuts against the second end of the second forming insert.
[0012] As a further scheme of the utility model, a first positioning block corresponding to the fourth end of the first forming insert is installed in the first sliding groove, and a first positioning groove that is docked with the first positioning block is formed in the lower end of the fourth end of the first forming insert.
[0013] A second positioning groove is formed in the upper end of the fourth end of the first forming insert, and a second positioning block that is docked with the second positioning groove is installed in the lower end of the upper mold.
[0014] As a further scheme of the utility model, the shape of the first sliding groove matches the shape of the first forming insert, and the shape of the second sliding groove matches the shape of the second forming insert.
[0015] As a further scheme of the utility model, the two sides of the top plate are respectively outwardly extended to form connecting ends of the lower mold, and a driving plate is connected to the connecting ends, so that the driving plate is externally connected to a driving component.
[0016] The lower mold is provided with a movable groove corresponding to the top plate, movable openings corresponding to the connecting ends are formed in the two sides of the lower mold, and the movable openings are corresponded to the connecting ends.
[0017] As a further scheme of the utility model, the connecting portion is obliquely abutted against the second end of the second forming insert.
[0018] Compared with the prior art, the utility model has the beneficial effects as follows:
[0019] 1) Compared with the simple overall ejection structure of the traditional mold, the mold effectively solves the problem that the tubular silica gel product is difficult to demold due to being tightly wrapped on the forming insert through the special connection mode of the first forming insert and the second forming insert and the ejection design; in the ejection process, the second forming insert can be automatically separated, so that the deformation and cracking of the product caused by uneven force during demolding are avoided, the yield of the product is greatly improved, and meanwhile, the design makes the demolding process more smooth, shortens the demolding time and improves the production efficiency;
[0020] 2) The fixed connection mode between the forming inserts of the traditional mold cannot adapt to the complex demolding requirement of the tubular product, while the first forming insert and the second forming insert in the mold are movably connected, and the second forming insert is installed through a hinge, so that the demolding process of the product can be flexibly adapted; in addition, the inserts are installed in the sliding groove, compared with the traditional fixed mode, the wear and loosening problems caused by frequent use are reduced, the stability of the inserts is improved, the forming precision of the product is ensured, and the maintenance cost and replacement frequency of the mold are reduced.
[0021] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying the creative labor.
[0023] Figure 1 It is the structure schematic diagram of the utility model;
[0024] Figure 2 It is the structure schematic diagram of the lower mold of the utility model;
[0025] Figure 3 It is the structure schematic diagram inside the lower mold of the utility model;
[0026] Figure 4 It is the structure schematic diagram of the first forming insert, the second forming insert and the ejector rod cooperation of the utility model;
[0027] Figure 5 It is the sectional structure schematic diagram of one viewing angle of the utility model;
[0028] Figure 6 It is the sectional structure schematic diagram of another viewing angle of the utility model.
[0029] The reference signs and names in the figures are as follows:
[0030] 1, upper die; 2, lower die; 3, die cavity; 4, first forming insert; 5, second forming insert; 6, first sliding groove; 7, second sliding groove; 8, hinge; 9, first end; 10, second end; 11, top plate; 12, ejector pin; 13, third end; 14, fourth end; 15, sleeve; 16, connecting portion; 17, first positioning block; 18, first positioning groove; 19, second positioning groove; 20, second positioning block; 21, connecting end; 22, driving plate; 23, movable slot; 24, movable port. DETAILED DESCRIPTION
[0031] 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, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0032] Please refer to Figures 1-6 In the embodiments of the present application, a mold for forming a silica gel product comprises an upper die 1 and a lower die 2. The upper die 1 and the lower die 2 are mutually butted to form a die cavity 3 for forming a product. The lower die 2 is provided with a first forming insert 4 and a second forming insert 5 at a position corresponding to the die cavity 3. First sliding grooves 6 corresponding to the first forming insert 4 and second sliding grooves 7 corresponding to the second forming insert 5 are formed along the parting surface of the lower die 2.
[0033] A hinge 8 is installed on the second sliding groove 7. The second forming insert 5 has a first end 9 and a second end 10. The first end 9 of the second forming insert 5 is hingedly connected to the hinge 8. The second end 10 of the second forming insert 5 is movably connected to one side of the first forming insert 4.
[0034] A top plate 11 is movably connected in the lower die 2. An ejector pin 12 is connected in a longitudinal direction along the end surface of the top plate 11. The upper end of the ejector pin 12 is connected and matched with one end of the first forming insert 4.
[0035] The utility model discloses technical scheme, the upper die 1 and the lower die 2 mutually butt joint and form the mould cavity 3, and the lower die 2 sets up the first forming insert piece 4 and the second forming insert piece 5 in the position corresponding mould cavity 3, and they are commonly used for forming silica gel product, and the first sliding groove 6 and the second sliding groove 7 are set up along the parting surface of the lower die 2, and provide the space of installation and activity for the first forming insert piece 4 and the second forming insert piece 5 respectively, the first forming insert piece 4 can move in the first sliding groove 6, and the second forming insert piece 5 is connected with the second sliding groove 7 through the hinge 8, and this design makes the first forming insert piece 4 and the second forming insert piece 5 can be flexible to a certain extent, to adapt to the forming and stripping requirement of tubular product,
[0036] The first end 9 of the second forming insert piece 5 is hinged to the hinge 8, and the second end 10 is movably connected to one side of the first forming insert piece 4, and this connection mode makes the second forming insert piece 5 can rotate around the hinge 8, and in the product ejection process, when the first forming insert piece 4 is pushed upward by the ejector rod 12, the second forming insert piece 5 is movably connected with the first forming insert piece 4, and in combination with the soft characteristics of the silica gel product, the movement of the first forming insert piece 4 will force the second forming insert piece 5 to rotate around the hinge 8, so as to realize the separation of the second forming insert piece 5 and the first forming insert piece 4, that is, the separation of the product, and create conditions for the smooth stripping of the product,
[0037] The top plate 11 in the lower die 2 is movably connected, and the ejector rod 12 longitudinally connected on the end face of the top plate 11 is connected and matched with one end of the first forming insert piece 4, when the product needs to be ejected, the top plate 11 is pushed, the top plate 11 drives the ejector rod 12 to move upward, and the ejector rod 12 in turn pushes the first forming insert piece 4 to eject in the longitudinal direction; since the product is wrapped in the first forming insert piece 4 and the second forming insert piece 5, in the process of ejecting the first forming insert piece 4, the second forming insert piece 5 is separated from the product in the above manner, and finally the product and the first forming insert piece 4 are ejected together, and the preliminary stripping is completed;
[0038] After the preliminary stripping, the product and the first forming insert piece 4 are separated from the ejector rod 12, at this time, they are moved to the outside of the production line for further processing, and finally the product and the first forming insert piece 4 are separated outside the line, so that the stripping process of the product is completely completed; in the clamping stage, in order to improve the production efficiency, the standby first forming insert piece 4 can be prepared in advance, and after completing the stripping once, the standby first forming insert piece 4 is quickly installed into the first sliding groove 6, so that the next round of production can be quickly entered, the time wasted due to waiting for the first forming insert piece 4 to reset is reduced, and the overall production efficiency is improved.
[0039] In summary, compared with the simple overall ejection structure of the traditional mold, the mold effectively solves the problem that the tubular silica gel product is difficult to demold due to being tightly wrapped on the forming insert through the special connection mode and ejection design of the first forming insert 4 and the second forming insert 5; in the ejection process, the second forming insert 5 can be automatically separated, avoiding deformation, cracking and other situations caused by uneven force when the product is demolded, greatly improving the yield of the product, and at the same time, this design makes the demolding process more smooth, shortens the demolding time, and improves the production efficiency; the fixed connection mode between the forming inserts of the traditional mold cannot adapt to the complex demolding requirements of the tubular product, while the first forming insert 4 and the second forming insert 5 in the mold are movably connected, and the second forming insert 5 is installed through the hinge 8, which can flexibly adapt to the demolding process of the product; in addition, the inserts are installed in the sliding groove, compared with the traditional fixed mode, the wear, loosening and other problems caused by frequent use are reduced, the stability of the inserts is improved, and then the forming precision of the product is ensured, and the maintenance cost and replacement frequency of the mold are reduced.
[0040] In the embodiment of the utility model, the first forming insert 4 has third end 13 and fourth end 14, the third end 13 bottom of first forming insert 4 is provided with sleeve mouth 15, sleeve mouth 15 and the upper end of ejector rod 12 sleeve joint cooperation;
[0041] The third end 13 of the first forming insert 4 extends outward on one side to form a connecting portion 16, and the connecting portion 16 movably abuts against the second end 10 of the second forming insert 5.
[0042] The sleeve mouth 15 provided at the bottom of the third end 13 of the first forming insert 4 is specially used for sleeve joint cooperation with the upper end of the ejector rod 12. This sleeve joint structure establishes a stable and accurate connection between the ejector rod 12 and the first forming insert 4. When the ejection force is transmitted from the top plate 11 to the ejector rod 12, the ejector rod 12 can accurately apply the pushing force to the first forming insert 4 through the sleeve mouth 15, ensuring that the first forming insert 4 moves smoothly along the predetermined longitudinal direction during ejection, avoiding unstable conditions such as deviation and shaking.
[0043] The connecting portion 16 formed by extending the third end 13 of the first forming insert 4 outward on one side movably abuts against the second end 10 of the second forming insert 5. During the operation of the mold, when the first forming insert 4 is pushed upward by the ejector rod 12, the connecting portion 16 will move synchronously with the first forming insert 4. Since the connecting portion 16 movably abuts against the second end 10 of the second forming insert 5, the movement of the first forming insert 4 will drive the second forming insert 5 to rotate around the hinge 8 through the connecting portion 16 and the wrapping action of the product. This ingenious design enables the second forming insert 5 to separate from the product in a predetermined manner during the ejection of the first forming insert 4, laying a foundation for the smooth demolding of the product.
[0044] The utility model discloses an embodiment, be located in the first sliding slot 6 install corresponding to the first forming insert 4 fourth end 14 first locating block 17, the fourth end 14 of first forming insert 4 is equipped with the first locating groove 18 of butt joint in first locating block 17 lower end,
[0045] The fourth end 14 of first forming insert 4 is equipped with the second locating groove 19 of upper end, and the lower end of the upper die 1 is provided with the second locating block 20 butt joint in the second locating groove 19.
[0046] The first locating block 17 corresponding to the fourth end 14 of the first forming insert 4 is installed in the first sliding slot 6, and the first locating groove 18 butt jointing the first locating block 17 is formed in the lower end of the fourth end 14 of the first forming insert 4, which constructs a precise positioning relationship, the first locating block 17 is embedded in the first locating groove 18, and the transverse movement freedom of the first forming insert 4 in the first sliding slot 6 is limited; when the first forming insert 4 moves longitudinally under the pushing of the ejector rod 12, the first locating block 17 is tightly matched with the first locating groove 18, so that the first forming insert 4 can only move along the predetermined longitudinal trajectory, and deviation to left and right during movement is avoided, thereby ensuring the accuracy and stability of product ejection;
[0047] The second locating groove 19 formed in the upper end of the fourth end 14 of the first forming insert 4 is butt jointed with the second locating block 20 installed at the lower end of the upper die 1, and during mold closing, the upper die 1 moves downward, and the second locating block 20 is accurately embedded in the second locating groove 19, and this matching mode enables the first forming insert 4 to be precisely positioned in the vertical direction, so that the first forming insert 4 can be in the correct position when the upper die 1 and the lower die 2 are closed, and the shape accuracy of the mold cavity 3 is ensured, thereby providing protection for accurate molding of products.
[0048] In the embodiment of the utility model, the shape of the first sliding slot 6 matches the shape of the first forming insert 4, and the shape of the second sliding slot 7 matches the shape of the second forming insert 5.
[0049] The shape of the first sliding slot 6 precisely matches the shape of the first forming insert 4, and this design provides a closely fitted mounting space for the first forming insert 4, and when the first forming insert 4 is installed in the first sliding slot 6, the closely fitted relationship between the two can effectively limit the first forming insert 4 in the other degrees of freedom except the longitudinal movement direction; when the first forming insert 4 is pushed by the ejector rod 12 to move longitudinally, the shape-matched first sliding slot 6 can play a good guiding role, so that the first forming insert 4 can move stably along the predetermined longitudinal trajectory, and unnecessary shaking, deviation or rotation during movement is avoided;
[0050] Similarly, the shape of the second sliding groove 7 matches the second forming insert 5, which makes the second forming insert 5 keep a stable installation state in the second sliding groove 7, and the shape-matched second sliding groove 7 can provide stable support and constraint for the second forming insert 5 during the mold working process, so as to ensure that the second forming insert 5 moves in a predetermined manner and cannot be displaced or deformed accidentally due to external factors, thereby ensuring the smooth progress of the entire demolding process.
[0051] Meanwhile, it is also beneficial to the accurate butt joint of the first forming insert 4 and the second forming insert 5, thereby being beneficial to the molding of the product.
[0052] In the embodiment of the utility model, the two sides of the top plate 11 extend downward to the outside of the lower mold 2 to form a connecting end 21, and a driving plate 22 is connected to the connecting end 21 to be connected to an external driving part through the driving plate 22.
[0053] The lower mold 2 is provided with a movable slot 23 corresponding to the top plate 11, and the two sides of the lower mold 2 are provided with a movable opening 24 connected to the movable slot 23, and the movable opening 24 corresponds to the connecting end 21.
[0054] The two sides of the top plate 11 extend to the outside of the lower mold 2 to form a connecting end 21, and a driving plate 22 is connected to the connecting end 21, which forms a bridge for transmitting external driving force to the top plate 11.
[0055] The lower mold 2 is provided with a movable slot 23 corresponding to the top plate 11, and the two sides of the lower mold 2 are provided with a movable opening 24 connected to the movable slot 23, and the movable opening 24 corresponds to the connecting end 21.
[0056] In the embodiment of the utility model, the connecting part 16 and the second end 10 of the second forming insert 5 are in inclined surface abutment.
[0057] Due to the existence of the inclined surface, the connecting part 16 will exert a force along the direction of the inclined surface on the second end 10 of the second forming insert 5 during the movement, which will promote the second forming insert 5 to rotate around the hinge 8, so as to realize the separation from the product.
[0058] It is obvious for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalency of the essential elements of the claims are intended to be embraced therein.
Claims
1. A mold for molding silicone products, characterized in that, It includes an upper mold and a lower mold, which are connected to each other to form a mold cavity for molding products. A first molding insert and a second molding insert are provided on the lower mold at positions corresponding to the mold cavity. A first groove corresponding to the first molding insert and a second groove corresponding to the second molding insert are provided along the parting surface of the lower mold. A hinge is installed on the second slide groove. The second molded insert has a first end and a second end. The first end of the second molded insert is hinged to the hinge, and the second end of the second molded insert is movably connected to one side of the first molded insert. A top plate is movably connected inside the lower mold, and a push rod is longitudinally connected along the end face of the top plate. The upper end of the push rod is connected and engaged with one end of the first molding insert.
2. The mold for molding silicone products according to claim 1, characterized in that, The first molded insert has a third end and a fourth end. The bottom of the third end of the first molded insert is provided with a sleeve opening, which is sleeved and fitted with the upper end of the top rod. The third end of the first molded insert extends outward to form a connecting portion, which movably abuts against the second end of the second molded insert.
3. The mold for molding silicone products according to claim 2, characterized in that, A first positioning block corresponding to the fourth end of the first molded insert is installed in the first groove, and a first positioning groove that engages with the first positioning block is opened at the lower end of the fourth end of the first molded insert. The upper end of the fourth end of the first molded insert is provided with a second positioning groove, and the lower end of the upper mold is provided with a second positioning block that mates with the second positioning groove.
4. A mold for molding silicone products according to any one of claims 1-3, characterized in that, The shape of the first groove matches the shape of the first molded insert, and the shape of the second groove matches the shape of the second molded insert.
5. A mold for molding silicone products according to any one of claims 1-3, characterized in that, Both sides of the top plate extend outward toward the lower mold to form connecting ends, and a drive plate is connected to the connecting ends to connect external drive components. The lower mold has a movable groove corresponding to the top plate, and both sides of the lower mold have movable openings that connect to the movable groove, with the movable openings corresponding to the connecting ends.
6. A mold for molding silicone products according to claim 2, characterized in that, The connecting portion abuts against the second end of the second molded insert at an angle.