CN209493479U - A dual-mold structure for hot-bending glass - Google Patents

Abstract

The utility model discloses a hot bending glass double-mold structure, which comprises a female mold, a first male mold and a second male mold; the first male die is arranged on the upper portion of the female die in an openable and closable manner, the second male die is arranged on the lower portion of the female die in an openable and closable manner, a first die cavity and a second die cavity which are independent of each other are respectively formed between the first male die and the female die and between the second male die and the female die, and the first male die and the second male die move to a die assembly position relative to the female die to jointly clamp and thermally bend and form glass in the first die cavity and the second die cavity. The utility model has reasonable structure; the first die cavity and the second die cavity of the double dies enable the double dies to simultaneously hot-bend and process two pieces of glass, so that the space is saved, the production efficiency is greatly improved, the production time is reduced, and the productivity and the quality are improved; the double molds made of graphite are high temperature resistant, the graphite is easy to process, and the consistency of the product is higher.

Description

A dual-mold structure for hot-bending glass

technical field

The utility model relates to the field of mold manufacturing, in particular to a double mold structure for manufacturing 3D hot bending glass.

Background technique

Generally speaking, the glass material is a flat plate. If a shaped glass is produced, the known method is to arrange the flat glass between an upper mold and a lower mold, and then heat the upper and lower molds and the space between the upper and lower molds. After the temperature reaches the temperature to soften the glass, the upper and lower modules can be molded together to shape the shape of the glass as a single mold structure. The existing hot bending mold can only process one product at a time, which has low production efficiency and low product consistency.

Utility model content

The technical problem solved by the utility model is to provide a double-mold structure for manufacturing 3D hot-bending glass to solve the problems raised in the above-mentioned background technology in view of the defects in the above-mentioned prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is as follows: a double-mould structure for hot-bending glass, including a female mold, a first male mold and a second male mold; On the upper part of the female mold, the second male mold is arranged at the lower part of the female mold in an openable and closable manner, between the first male mold and the female mold, and between the second male mold and the female mold are respectively formed independent first The mold cavity and the second mold cavity, the first male mold and the second male mold move relative to the female mold to the clamping position to jointly clamp and heat-bend the glass in the first mold cavity and the second mold cavity.

As a further elaboration to the above-mentioned technical scheme:

In the above technical solution, the first mold cavity and the second mold cavity are arranged parallel to each other on the upper and lower sides of the mother mold, and the first mold cavity and the second mold cavity are centrally symmetrical.

In the above technical solution, the first male die is provided with a first bump downward, the second male die is provided with a second bump upward, and the upper surface of the female die is provided with a The first groove, the lower surface of the female mold is provided with a second groove that matches the second bump, a first mold cavity is formed between the first bump and the second groove, and the second A second mold cavity is formed between the protrusion and the second groove.

In the above technical solution, the bottom of the first groove is provided with a first plane, and one side of the first plane extends toward the direction of the first male die to have a first arc surface; the bottom of the second groove A second plane is provided, and one side of the second plane extends toward the direction of the second male mold with a second arc surface; the lower surface of the first bump is provided with a third plane, which corresponds to the first arc The surface is provided with a third arc surface; the upper surface of the second protrusion is provided with a fourth plane, and the fourth plane is provided with a fourth arc surface corresponding to the second arc surface; the first arc surface and the second arc surface The bending directions of the surfaces are opposite, and the bending directions of the first arc surface and the second arc surface are respectively the same as those of the third arc surface and the fourth arc surface.

In the above technical solution, the first groove is provided on the other side opposite to the first arc surface, and the second groove is provided with a corner-clearing groove on the other side opposite to the second arc surface.

In the above technical solution, the vertical distance between the first arc surface and the third arc surface is equal to the vertical distance between the first plane and the third plane; The vertical distance is equal to the vertical distance between the second plane and the fourth plane.

In the above technical solution, the upper surface and the lower surface of the female mold are respectively provided with a first positioning groove and a second positioning groove, the first male mold is provided with a first positioning block, and the second male mold is provided with a There is a second positioning block, the first positioning block is embedded in the first positioning groove to form a positioning structure between the first male mold and the female mold; the second positioning block is embedded in the second positioning groove to form the first The positioning structure between the second male mold and the female mold.

In the above technical solution, the first male mold, the second male mold and the female mold are all graphite molds.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is as follows: a method for manufacturing 3D hot-bending glass with a double-mould structure for hot-bending glass, comprising the following steps:

Step 1, place the first piece of flat glass, turn the double mold upside down so that the second male mold is on top, place the first piece of flat glass in the second groove in an oblique manner, and place the second male mold toward the female The mold direction moves to the position where the first sheet of flat glass is fixed in the second mold cavity, which is not the mold closing position;

Step 2, place the second piece of flat glass, reverse the double mold in step 1 by 180 degrees so that the first male mold is on top, place the second piece of flat glass in the first groove in an oblique manner, place the first The male mold moves toward the female mold to the position where the second sheet of flat glass is fixed in the first mold cavity, which is not the mold closing position;

Step 3, glass preheating, place the double mold in step 2 in the heating furnace of the hot bending machine, heat the first male mold, the second male mold, the female mold and the two flat plates in the first mold cavity and the second mold cavity Shaped glass, use the first male mold, second male mold and female mold made of graphite to evenly heat the two pieces of flat glass in the first cavity and the second cavity, and the heating furnace adopts continuous heating or slow heating way, so that the temperature in the furnace is consistent everywhere;

Step 4: The glass is hot-bent and formed, and the heating in Step 3 is continued, so that the two pieces of flat glass in the first cavity and the second cavity reach the temperature required for hot-bending forming, and the temperature is between 300-500 degrees Celsius , press down the first male mold, the first male mold drives the female mold to press down, so that both the first male mold and the second male mold reach the mold clamping position relative to the female mold, and the first male mold is in contact with the mold clamping position when moving to the mold clamping position The female mold clamps the second sheet of flat glass in the first cavity and bends the second sheet of flat glass between the first arc surface and the third arc surface, and the second male mold moves to the mold clamping position clamping the first piece of flat glass in the second mold cavity with the mother mold and bending the part of the first piece of flat glass between the second arc surface and the fourth arc surface;

Step 5: Glass annealing. After the glass is hot-bent and shaped, lower the temperature of the heating furnace to below 100°C at a uniform rate, raise the first male mold and the female mold, and take out the second piece of glass from the first mold cavity. , the master mold and the second male mold cannot be completely separated. The position of the master mold needs to be maintained at a position where the first piece of glass will not fall from the second mold cavity. Turn the double mold 180 degrees and raise the second male mold. The first piece of glass is taken out from the second mold cavity; the taken out first piece of glass and the second piece of glass are placed in a non-ventilated place to cool down to room temperature.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has a reasonable structure; the first cavity and the second cavity of the double mold enable the double mold to process two pieces of glass at the same time, saving space, The production efficiency is greatly improved, the production time is reduced, and the production capacity and quality are improved; the double mold made of graphite is resistant to high temperature, and the graphite is easy to process, so that the product consistency is high.

Description of drawings

Fig. 1 is the three-dimensional structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the mold clamping position of the utility model;

Fig. 3 is a structural schematic diagram of a state of fixing glass in a double mold.

In the figure: 1, the first male mold; 11, the first bump; 12, the third arc surface; 13, the first positioning block; 2, the female mold; 21, the first groove; 22, the first arc surface; 23. Avoidance groove; 24. Second groove; 25. Second arc surface; 26. First positioning groove; 27. Second positioning groove; 3. Second male mold; 31. Second bump; 32. The fourth curved surface; 33, the second positioning block; 4, glass.

Detailed ways

Below in conjunction with accompanying drawing 1 to accompanying drawing 3 the utility model is described in further detail.

The embodiments described by referring to the figures are exemplary and are intended to explain the present application and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "several" and "plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. In this application, unless otherwise expressly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, or include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "under" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

As shown in Figure 1-3, a hot-bending glass double mold structure includes a female mold 2, a first male mold 1 and a second male mold 3; the first male mold 1 is arranged on the upper part of the female mold 2 in an openable and closable manner , the second male mold 3 is arranged at the lower part of the female mold 2 in an openable and closable manner, between the first male mold 1 and the female mold 2, and between the second male mold 3 and the female mold 2 respectively form independent first mold cavities With the second mold cavity, the first male mold 1 and the second male mold 3 move relative to the female mold 2 to the clamping position to jointly clamp and heat-bend the glass in the first mold cavity and the second mold cavity.

The first mold cavity and the second mold cavity are arranged parallel to each other on the upper and lower sides of the female mold 2 , and the first mold cavity and the second mold cavity are centrally symmetrical.

The first male die 1 is provided with a first bump 11 downward, the second male die 3 is provided with a second bump 31 upward, and the upper surface of the female die 2 is provided with a first groove 21 that matches the first bump 11 , the lower surface of the master mold 2 is provided with a second groove 24 matching with the second bump 31, a first mold cavity is formed between the first bump 11 and the second groove 24, and the second bump 31 and the second A second mold cavity is formed between the grooves 24 .

The groove bottom of the first groove 21 is provided with a first plane, and one side of the first plane extends toward the first male mold 1 with a first arc surface 22; the groove bottom of the second groove 24 is provided with a second plane, One side of the second plane extends towards the direction of the second male mold 3 with a second arc surface 25; Three arc surfaces 12; the upper surface of the second protrusion 31 is provided with a fourth plane, and the fourth plane is provided with a fourth arc surface 32 corresponding to the second arc surface 25; the first arc surface 22 and the second arc surface 25 The bending directions are opposite, and the bending directions of the first arc surface 22 and the second arc surface 25 are respectively the same as those of the third arc surface 12 and the fourth arc surface 32 .

On the other side of the first groove 21 opposite to the first arcuate surface 22 , and on the other side of the second groove 24 opposite to the second arcuate surface 25 , escape grooves 23 are provided.

The vertical distance between the first arc surface 22 and the third arc surface 12 is equal to the vertical distance between the first plane and the third plane; the vertical distance between the second arc surface 25 and the fourth arc surface 32 and the second The vertical distance between the plane and the fourth plane is equal.

The upper surface and the lower surface of the female mold 2 are respectively opened with a first positioning groove 26 and a second positioning groove 27, the first male mold 1 is provided with a first positioning block 13, and the second male mold 3 is provided with a second positioning block 33 , the first positioning block 13 is embedded in the first positioning groove 26 to form a positioning structure between the first male mold 1 and the female mold 2; the second positioning block 33 is embedded in the second positioning groove 27 to form a second male mold 3 and the positioning structure between the master mold 2.

The first male mold 1, the second male mold 3 and the female mold 2 are all graphite molds.

The manufacturing process of the double mold is to select high-quality graphite material; then cut the whole piece of graphite material into the required size in the cutting room, one piece of 185*185*30mm is used as the master mold 2 blank material, two pieces of 185*185 *23mm is respectively used as the blank material of the first male mold 1 and the second male mold 3, and the blank material is put into the CNC machining center for molding and engraving, preferably using carbon CNC computer gongs; the first male mold 1 and the second male mold The male mold 3 is processed in the same way. The female mold 2 needs to be processed on two sides. After the first side is processed, the female mold 2 is rotated 180 degrees to process the other side. The graphite material CNC does not need lubricating oil and cutting during the engraving process. liquid; the engraved female mold 2, the first male mold 1 and the second male mold 3 are carried out on the polishing machine for graphite polishing for the first time. Secondary grinding, so that the surface of the graphite mold reaches a mirror effect, and after the dimensional inspection by the three-dimensional detector, it can be put into production.

A method for manufacturing 3D hot-bending glass with a double-mold structure for hot-bending glass, comprising the following steps:

Step 1, place the first sheet of flat glass, invert the double mold as a whole so that the second male mold 3 is above, place the first flat glass in the second groove 24 in an oblique manner, and place the second male mold 3 Move to the position where the first flat glass is fixed in the second mold cavity in the direction of the mother mold 2, which is not the position for mold closing (as shown in Figure 3);

Step 2, place the second piece of flat glass, reverse the double mold in step 1 by 180 degrees so that the first male mold 1 is on top, place the second piece of flat glass in the first groove 21 in an oblique manner, place the The first male mold 1 moves toward the female mold 2 direction to the position that the second sheet of flat glass is fixed in the first mold cavity, which is not the position of mold closing (as shown in Figure 3);

Step 3, glass preheating, place the double mold in step 2 in the heating furnace of the hot bending machine, heat the first male mold 1, the second male mold 3, the female mold 2 and the first mold cavity and the second mold cavity Two pieces of flat glass, the first male mold 1, the second male mold 3 and the female mold 2 made of graphite are used to uniformly heat the two pieces of flat glass in the first mold cavity and the second mold cavity, and the heating furnace adopts The method of continuous heating or slow heating makes the temperature in the furnace consistent everywhere;

Step 4: The glass is hot-bent and formed, and the heating in Step 3 is continued, so that the two pieces of flat glass in the first cavity and the second cavity reach the temperature required for hot-bending forming, and the temperature is between 300-500 degrees Celsius , press down the first male mold 1, the first male mold 1 drives the female mold 2 to press down, so that the first male mold 1 and the second male mold 3 reach the mold clamping position relative to the female mold 2 (as shown in Figure 2) , the first male mold 1 clamps the second piece of flat glass in the first mold cavity with the female mold 2 during the movement to the mold clamping position and makes the second flat glass on the first arc surface 22 and the third arc surface 12 During the movement of the second male mold 3 to the clamping position, the second male mold 3 clamps the first piece of flat glass in the second mold cavity with the female mold 2 and makes the first piece of flat glass on the second curved surface 25 and the part between the fourth arc surface 32 is bent;

Step 5: Glass annealing. After the glass is bent and formed, the furnace temperature of the heating furnace is lowered to below 100°C at a uniform rate, the first male mold 1 and the female mold 2 are raised, and the second piece of glass is removed from the first mold cavity. The female mold 2 and the second male mold 3 cannot be completely separated. The position of the female mold 2 needs to be maintained at a position where the first piece of glass will not fall from the second mold cavity. Turn the double mold 180 degrees and raise In the second male mold 3, the first piece of glass is taken out from the second mold cavity; the taken out first piece of glass and the second piece of glass are placed in a non-ventilated position to drop to room temperature.

In step 4, if the temperature in the heating furnace reaches 640-710°C, the glass will begin to deform under the action of its own gravity. In order to prevent the glass from suddenly settling when it is close to the softening temperature, and to avoid thermal bending ripples on the glass surface, the operator must always Observe the forming condition of the glass in the furnace, and control the number, area and time of the heating lamp switch in the heating furnace. Before closing the mold, the temperature in the heating furnace should not exceed 640-710°C. The temperature in the heating furnace is about 650°C.

In step 5, glass annealing should adopt slow cooling method, and the furnace temperature must be lowered to below 100°C before taking out the glass. When the glass is hot-bending, the original stress has been eliminated. The cooling rate in the annealing temperature range should be strictly controlled, especially in the higher temperature stage, the annealing curve should change uniformly, and the glass placed on the shelf after leaving the heating furnace should not be placed in the workshop or where the fan is directly blown. It should be placed in an unventilated room and slowly lowered to room temperature.

The utility model has a reasonable structure; through the first mold cavity and the second mold cavity of the double mold, the double mold can heat bend two pieces of glass at the same time, which saves space, greatly improves the production efficiency, reduces the production time, and improves the production capacity High and high quality; the double mold made of graphite is resistant to high temperature, graphite is easy to process, and ensures high product consistency.

The above is not any limitation to the technical scope of the present utility model, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims (8)

1. a kind of heat-bending glass bimodulus lamps structure, it is characterised in that: including master mold, the first male model and the second male model；Described first Male model is arranged in master mold top in a manner of retractable, and second male model is arranged in master mold lower part in a manner of retractable, and described Between one male model and master mold, mutually independent first die cavity and the second die cavity are respectively formed between the second male model and master mold, it is described First male model, the second male model with respect to master mold be moved to die-closed position clamp jointly and the first die cavity of hot bending shape in and the second die cavity Interior glass.

2. a kind of heat-bending glass bimodulus lamps structure according to claim 1, it is characterised in that, first die cavity and second The die cavity two sides arranged in parallel up and down in master mold, first die cavity are centrosymmetric with the second die cavity.

3. a kind of heat-bending glass bimodulus lamps structure according to claim 2, it is characterised in that, first male model is to dividing into It is equipped with the first convex block, second male model has set up the second convex block, and the master mold upper surface is provided with and the first convex block phase First groove of cooperation, the master mold lower surface are provided with the second groove matched with the second convex block, first convex block with The first die cavity is formed between second groove, forms the second die cavity between second convex block and the second groove.

4. a kind of heat-bending glass bimodulus lamps structure according to claim 3, it is characterised in that, the slot bottom of first groove It is provided with the first plane, the side of first plane is extended with the first cambered surface toward the first male model direction；The slot of second groove Bottom is provided with the second plane, and the side of second plane is extended with the second cambered surface toward the second male model direction；First convex block Lower surface is provided with third plane, and corresponding first cambered surface of the third plane is provided with third cambered surface；Second convex block it is upper Surface is provided with fourth plane, and corresponding second cambered surface of the fourth plane is provided with the 4th cambered surface；First cambered surface and second The bending direction of cambered surface on the contrary, first cambered surface, the second cambered surface respectively with third cambered surface, the curved direction phase of the 4th cambered surface Together.

5. a kind of heat-bending glass bimodulus lamps structure according to claim 4, it is characterised in that, first groove is with The opposite other side of one cambered surface, the second groove are provided with bit-avoiding slot in the other side opposite with the second cambered surface.

6. a kind of heat-bending glass bimodulus lamps structure according to claim 5, it is characterised in that, first cambered surface and third The vertical range between vertical range and the first plane and third plane between cambered surface is equal；Second cambered surface and the 4th arc The vertical range between vertical range and the second plane and fourth plane between face is equal.

7. a kind of heat-bending glass bimodulus lamps structure according to claim 6, it is characterised in that, the upper surface of the master mold and Lower surface is opened respectively is formed with the first locating slot and the second locating slot, and first male model is provided with the first locating piece, and described second Male model is provided with the second locating piece, and first locating piece is embedded to be formed between the first male model and master mold in the first locating slot Location structure；Second locating piece, which is embedded, is forming the location structure between the second male model and master mold in the second locating slot.

8. a kind of heat-bending glass bimodulus lamps structure according to claim 7, it is characterised in that, first male model, second Male model and master mold are graphite jig.