CN202399512U - Thermal forming die - Google Patents

Abstract

The utility model relates to a thermal forming die, which comprises an upper die and a lower die; the upper die comprises an upper die frame and an upper inner die, the lower die comprises a lower die frame and a lower inner die, the upper die frame and the lower die frame are respectively provided with a cavity, the upper inner die and the lower inner die are respectively embedded in the corresponding cavities in a movable mode, the periphery of the cavity of the upper die frame and the lower die frame is provided with a guide mechanism, the upper inner die and the lower inner die are respectively movably connected with the upper die frame and the lower die frame through the guide mechanisms, and the lower end surface of the upper inner die is matched with the upper end surface of the lower inner die and. The die carrier and the inner die are in sliding fit through the T-shaped guide structure, the standardization of the die carrier can be realized, the inner die is replaced according to production requirements, and the design and manufacturing cost of the die is saved; the mould frame is provided with the baffle assembly and the pressing block assembly, the inner mould can be fixed in the cavity of the mould frame, the guide groove and the fine positioning block can also realize accurate positioning of the inner mould, quick installation and positioning can be conveniently realized, and the production efficiency is effectively improved.

Description

A thermoforming mold

technical field

The utility model relates to a thermoforming mold, in particular to a thermoforming mold which can realize rapid positioning and installation and use. the

Background technique

With the development of the economy, the mold industry has also developed rapidly. Various molds are industrial equipment widely used in the mass production of various industrial products. There are many types of molds and various shapes. The main feature is that each set of molds needs to be designed once, and the quality of the mold design directly affects the quality of its products. With the development of the mobile phone and POS machine market, more and more light guide plates or circuit board products require different shapes of KEY type to avoid LED or other protruding structures. Features, the industry generally uses PC or TPE sheets of standard thickness to form various shapes required by the product through a thermoforming process. Manufacturers need a relatively low-cost, high-efficiency molding die to meet the needs of this thermoforming process. the

Contents of the invention

The utility model provides a thermoforming mold, which can be quickly positioned and clamped on the molding machine, fully realizes the standardization of the mold base, and only needs to design the inner mold part for each specific project, which greatly shortens the production time. The cycle of the mold and the cost of the mold making are improved, and the productivity is improved to solve the above problems.

The utility model is realized by adopting the following technical proposals: a thermoforming mold includes an upper mold and a lower mold; the upper mold includes an upper mold frame and an upper inner mold, and the lower mold includes a lower mold frame and a lower inner mold. Both the upper mold base and the lower mold base have a cavity, and the upper inner mold and the lower inner mold are respectively embedded in the corresponding cavities in a movable manner. It is characterized in that the cavities of the upper mold base and the lower mold base The periphery is provided with a guide mechanism, and the upper inner mold and the lower inner mold are respectively movably connected with the upper mold frame and the lower mold frame through the guide mechanism, and the lower end surface of the upper inner mold matches and corresponds to the upper end surface of the lower inner mold.

Preferably, the guide mechanism is a structure of a guide groove and a guide bar.

Further, the guide mechanism is provided with a T-shaped guide groove on the periphery of the cavity of the upper mold base and the lower mold base, and a guide bar matching the guide groove is provided on the corresponding side of the upper inner mold and the lower inner mold. .

Preferably, it also includes a fine positioning block and a guiding groove, the fine positioning block is arranged on the bottom of the cavity on the upper mold base and the lower mold base, and the described guiding groove is arranged on the upper end surface of the upper inner mold and the lower inner mold. On the lower end face of the guide groove, the position of the groove bottom of the guide groove coincides with the fine positioning block, and the two realize a sliding fit.

Preferably, a block assembly is further included, and one end of the block assembly is arranged on the end surfaces of the cavity outlets of the upper mold frame and the lower mold frame perpendicular to the direction of the guide mechanism.

Preferably, it also includes a pressing plate assembly, the pressing plate assembly is arranged on the T-shaped groove edge of the upper mold base and the lower mold base, the pressing plate assembly includes a pressing plate fitting on the edge of the groove, springs under the pressing plate, distance screws and Set screw.

Preferably, it also includes a positioning column and a positioning hole, the positioning column is arranged on the lower inner mold, and the positioning column is higher than the upper end surface of the lower inner mold; the positioning hole is arranged on the upper inner mold, and its position corresponds to the positioning column .

Preferably, it also includes a soft binder ring on the lower end surface of the upper inner mold.

The beneficial effect of the utility model is that the mold base and the inner mold realize sliding fit through the T-shaped guiding structure, which can realize the standardization of the mold base, and the inner mold can be replaced according to production needs, which saves the cost of mold design and manufacture; the mold base is provided with The baffle assembly and the pressing block assembly can fix the inner film in the cavity of the mold frame, and the guide groove and the precise positioning block can also realize the precise positioning of the inner mold, which is convenient for quick installation and positioning, and effectively improves production efficiency.

Description of drawings

Fig. 1 is the upper formwork structure schematic diagram of the embodiment of the present utility model;

Fig. 2 is the structural representation of the pressing plate assembly of the embodiment of the present utility model;

Fig. 3 is the structural representation of upper inner mold of the embodiment of the utility model;

Fig. 4 is the schematic diagram of the structure of the lower end surface of the upper inner mold of the embodiment of the present utility model;

Fig. 5 is a schematic diagram of an upper die assembly structure of an embodiment of the present utility model;

Fig. 6 is the schematic diagram of the assembly structure of the lower mold of the embodiment of the present utility model;

Reference signs: 1 upper mold base; 2 upper inner mold; 3 lower mold base; 4 lower inner mold; 11 fixing screw; 12 pressure plate assembly; 121 fixing screw; 122 distance screw; 123 spring; Block assembly; 15 positioning pin; 16 fine positioning block; 17 cavity; 21 binder ring; 22 positioning hole; 23 guide bar;

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figure 1-6, the thermoforming mold includes an upper mold and a lower mold; as shown in Figure 5, the upper mold includes an upper mold frame 1 and an upper inner mold 2, and as shown in Figure 6, the lower mold includes a lower mold frame 3 and lower inner mold 4. The structure of the upper mold base 1 and the lower mold base 3 is the same, except that there is a positioning pin 15 on the upper mold base 1 and a large positioning hole 35 at the position corresponding to the lower mold base 3 . The following mainly takes the upper mold structure as an example. As shown in Figures 1 and 3, the upper mold frame 1 has a cavity 17, and the upper inner mold 2 is embedded in the cavity 17 in a movable manner. T-shaped guide grooves 13 are provided on both sides of the cavity 17, and the upper inner mold 2 The surface connected to the cavity 17 is provided with a guide bar 23 matched with the guide groove 13, and the guide groove 13 and the guide bar 23 constitute a guide mechanism to realize the flexible connection of the upper mold base 1 and the upper inner mold 2. Further, a block assembly 14 is provided on the end face of the cavity 17 outlet of the upper mold frame 1 and the lower mold frame 3 perpendicular to the direction of the guide mechanism, and the center of one end of the block assembly 14 is fixed on the upper mold frame 1, The other end is rotatable and is used to fix the inner mold in the mold base, as shown in Figure 5. On the bottom plane of the cavity 17 of the upper mold frame 1, a precise positioning block 16 is arranged, and a guiding groove 24 is provided on the upper end surface of the upper inner mold 2 oppositely, as shown in Figure 4, the groove bottom of the guiding groove 24 The position coincides with the fine positioning block 16, and the two realize sliding fit. As shown in Figure 2, a platen assembly 12 is provided on the side of the guide groove 13 of the cavity 17. The platen assembly 12 includes a movable platen that fits on the edge of the groove, a spring 123, a distance screw 122 and a set screw under the platen. 121 , the distance screw 122 is used to limit the position of the pressing plate away from the guide groove 13 . As shown in FIG. 6 , the connection structure of the lower mold base 3 and the lower inner mold 4 is as described above.

Both ends of the upper mold frame 1 and the lower mold frame 3 are provided with fixing screws 11 for fixing the mold frame on the molding machine. A positioning column 42, a positioning hole 22 and a binder ring 21 are also provided for fixing materials and products on the mould. The positioning column 42 is arranged on the lower inner mold 2, and the positioning column 42 is higher than the upper end surface of the lower inner membrane 2; the positioning hole 22 is arranged on the upper inner mold 2, and its position corresponds to the positioning column 42; the soft binder ring 21 is set On the lower end face of the upper inner mold 2.

In the working state, the upper mold frame and the lower mold frame are pre-fixed on the thermoforming machine table by fixing screws; the stopper assembly is rotated in the open position shown in Figure 1. Loosen the fixing screws on the pressing block components on both sides of the upper mold base and the lower mold base, under the action of the spring, the pressing block is bounced upwards, and the distance of the springing is controlled by the distance screw. At this time, push the upper inner mold and the lower inner membrane horizontally into the cavity of the corresponding mold base through the guidance of the T-shaped guide groove, and accurately fix the inner mold through the guide grooves on the back of the upper inner mold and the lower inner mold. horizontal position. After the upper inner mold and the lower inner mold are pushed to the bottom, lock the pressing block assemblies on both sides of the mold base by tightening the fixing screws, and rotate the stopper assembly on the front of the mold base to the closed position shown in Figure 5, and the entire mold is clamped The process is now complete. After the upper and lower molds are opened, the standard sheet is placed on the horizontal surface of the lower inner mold through the positioning column. When the mold is closed, the pressing ring first presses the sheet tightly. When the mold continues to close, the KEY type of the inner mold contacts the sheet, and finally Form the sheet into the desired shape. During the mold opening process, the binder ring continues to press the product until the KEY type of the inner mold is completely separated. During the whole process, the sheet is completely pressed continuously by the binder ring, and the position and shape are completely controlled.

Although the present utility model has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the present utility model defined by the appended claims, changes in form and details have been made to the present utility model. Various changes are made in the utility model, all of which are within the protection scope of the utility model.

Claims (8)

1. a hot forming tool comprises upper die and lower die; Said patrix comprises top mold frame and last internal mold; Said counterdie comprises mould bases and core insert down, and said top mold frame all has a cavity with following mould bases, and said upward internal mold and core insert are embedded in respectively in the corresponding cavity with manner; It is characterized in that; The cavity periphery of said top mold frame and following mould bases is provided with guiding mechanism, and last internal mold and core insert be respectively through guiding mechanism and top mold frame and following mould bases realization flexible connection, the lower surface of last internal mold be complementary with the upper surface of core insert and the position corresponding.

2. a kind of hot forming tool according to claim 1 is characterized in that, said guiding mechanism is the structure of guide groove sliver.

3. a kind of hot forming tool according to claim 2 is characterized in that, said guiding mechanism is the guide groove that is provided with the T type at the periphery of the cavity of top mold frame and following mould bases, on the limit of last internal mold and core insert correspondence, is provided with the sliver with the guide groove coupling.

4. a kind of hot forming tool according to claim 1; It is characterized in that; Also comprise fine positioning piece and guiding groove, said fine positioning piece is located at the cavity bottom on top mold frame and the following mould bases, and said guiding groove is located on the lower surface of upper surface, core insert of internal mold; The bottom land position and the fine positioning piece of said guiding groove match, and both are slidingly matched in realization.

5. a kind of hot forming tool according to claim 1 is characterized in that, also comprises the block assembly, and an end of said block assembly is arranged on the end face at top mold frame and the following mould bases cavity outlet place vertical with the guiding mechanism direction.

6. a kind of hot forming tool according to claim 1; It is characterized in that; Also comprise Anchor plate kit, said Anchor plate kit is arranged on the T type trough rim of top mold frame and following mould bases, and said Anchor plate kit comprises the pressing plate, the spring under the pressing plate, distance screws and the fixed screw that agree with at trough rim.

7. a kind of hot forming tool according to claim 1 is characterized in that, also comprises reference column and locating hole, and said reference column is arranged on the core insert, and reference column exceeds the upper surface of core insert; Said locating hole is arranged on the internal mold, and its position is corresponding with reference column.

8. a kind of hot forming tool according to claim 1 is characterized in that, also is included in the soft holding pad on the lower surface of internal mold.

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