CN213972535U - Movable bottom die of thermal forming die - Google Patents

Abstract

The utility model relates to a hot forming die's activity die block, its characterized in that: comprises a movable bottom die main body and an insert; the upper surface of activity die block main part is equipped with the mounting groove of undercut, and the mold insert passes through at least one locking Assembly detachable and installs in the mounting groove. The movable bottom die of the thermal forming die can be conveniently and quickly replaced according to the forming requirements of different characters or patterns, and the replacement time of the movable bottom die is saved.

Description

Movable bottom die of thermal forming die

Technical Field

The utility model relates to a thermoforming equipment especially relates to a thermoforming mould's activity die block.

Background

The existing thermoforming mould for manufacturing plastic products (such as plastic cups, plastic boxes, plastic covers and the like) can complete the forming and shearing actions. The hot forming die comprises an upper die and a lower die; the upper die generally comprises an upper die plate, an upper die body, an upper shear die and a material pressing ring, wherein the upper die body is arranged on the upper die plate and is positioned below the upper die plate, the upper shear die is arranged on the upper die body and is positioned below the upper die body, the upper shear die is provided with a cavity, the inner edge of the lower end of the upper shear die is an upper shear blade, the material pressing ring can move up and down in the cavity of the upper shear die, and the material pressing ring presses the sheet material onto the lower die when the die is closed; the lower die comprises a lower die plate, a lower die body, a lower shearing die, a forming die and an ejector rod, wherein the lower die body is arranged on the lower die plate and is positioned above the lower die plate, the lower shearing die is arranged on the lower die body and is positioned above the lower die body, the outer edge of the upper end of the lower shearing die is a lower shearing cutting edge generally, the lower shearing cutting edge is matched with the upper shearing cutting edge (the upper shearing cutting edge and the lower shearing cutting edge are both annular cutting edges), the forming die comprises a side die and a movable bottom die, the side die is arranged on the lower die body and is positioned at the inner side of the lower shearing die, the movable bottom die is arranged at the inner side of the side die and is connected with the upper end of the ejector rod, and the lower end of the ejector rod extends out of the lower die plate and is connected with an ejector rod mounting plate.

When the plastic product is manufactured, firstly, the plastic sheet is heated to enable the plastic sheet to reach the molding temperature; the heated plastic sheet passes through a forming area, the thermal forming die is closed, and the plastic sheet is tightly attached to the forming die through positive pressure thermal forming or negative pressure thermal forming; the formed sheet material is sheared by an upper shearing blade and a lower shearing blade, and the plastic product is sheared from the formed sheet material to obtain a single plastic product; then the ejector rod mounting plate, the ejector rod and the movable bottom die are lifted relative to the lower die plate, and the plastic product is ejected from the forming die, so that the plastic product is separated from the forming die; then blowing air to the plastic product to blow the plastic product away from the thermal forming die to complete the one-step forming process.

When plastic containers such as plastic cups, plastic boxes and the like are manufactured, characters or patterns need to be formed at the bottoms of the containers sometimes; in the manufacture of plastic closures, it is sometimes necessary to form text or graphics on top of the plastic closure. In order to save equipment cost, in the design of the thermal forming die, one die is multipurpose by replacing the movable bottom die, namely, one set of thermal forming die is provided with a plurality of different movable bottom dies, and different characters or patterns are engraved on each movable bottom die according to production requirements. When another plastic product with different characters and patterns needs to be produced, the original whole movable bottom die needs to be detached from the ejector rod and then another movable bottom die needs to be installed. Because the movable bottom die is usually provided with a cooling water path which needs to be aligned and communicated with the cooling water path in the ejector rod, the whole disassembly and assembly process is more complicated, longer time is needed to be spent, and the normal operation of production is influenced.

Disclosure of Invention

The utility model aims to solve the problem that a hot forming die's activity die block is provided, this kind of hot forming die's activity die block can conveniently change fast according to the shaping requirement of different characters or pattern, saves the change time of activity die block. The technical scheme is as follows:

the utility model provides a movable die block of thermoforming mould which characterized in that: comprises a movable bottom die main body and an insert; the upper surface of activity die block main part is equipped with the mounting groove of undercut, and the mold insert passes through at least one locking Assembly detachable and installs in the mounting groove.

The above-mentioned thermoforming mold generally includes an upper mold and a lower mold; the upper die generally comprises an upper die plate, an upper die body, an upper shear die and a material pressing ring, wherein the upper die body is arranged on the upper die plate and is positioned below the upper die plate, the upper shear die is arranged on the upper die body and is positioned below the upper die body, the upper shear die is provided with a cavity, the inner edge of the lower end of the upper shear die is an upper shear blade, the material pressing ring can move up and down in the cavity of the upper shear die, and the material pressing ring presses the sheet material onto the lower die when the die is closed; the lower die comprises a lower die plate, a lower die body, a lower shearing die, a forming die and an ejector rod, the lower die body is arranged on the lower die plate and is positioned above the lower die plate, the lower shearing die is arranged on the lower die body and is positioned above the lower die body, the outer edge of the upper end of the lower shearing die is a lower shearing blade, and the lower shearing blade is matched with the upper shearing blade (the upper shearing blade and the lower shearing blade are both annular blades); the forming die comprises a side die and a movable bottom die, the side die is installed on the lower die body and is located on the inner side of the lower shear die, the movable bottom die is arranged on the inner side of the side die, the movable bottom die is connected with the upper end of the ejector rod, and the lower end of the ejector rod extends out of the lower die plate and is connected with the ejector rod mounting plate. The utility model discloses a when the activity die block was applied to thermoforming mould, its activity die block main part was connected with the upper end of knockout rod.

The mounting groove is generally shaped to match the insert, the side walls of the insert contacting the walls of the mounting groove, and the lower surface of the insert contacting the bottom of the mounting groove.

The movable bottom die is matched with a plurality of inserts, the upper surface of each insert is provided with different characters or patterns, the movable bottom die is modified in a mode of replacing the inserts, one die is multipurpose, and the movable bottom die is used for producing various plastic products with the same specification and different characters or patterns (for example, different shop names or patterns are arranged on the plastic covers, and different characters or patterns are arranged at the bottoms of the plastic containers). When another plastic product with different characters or patterns needs to be produced, the original insert can be taken out of the mounting groove on the main body of the movable bottom die and detached only by detaching the locking assembly, and then the other insert is put into the mounting groove and the locking assembly is locked, so that the replacement is very convenient and quick, and the replacement time of the movable bottom die is saved.

As the utility model discloses an optimal scheme, locking Assembly includes locking screw, sets up screw thread through-hole and setting on the cell wall of mounting groove are in screw thread blind hole on the lateral wall of mold insert, screw thread through-hole link up extremely from the cell wall level of mounting groove the lateral wall of activity die block main part, screw thread blind hole are corresponding with the screw thread through-hole, and locking screw passes the screw thread through-hole from the lateral wall of activity die block main part and gets into corresponding screw thread blind hole and locking.

As a further preferred scheme of the utility model, the tank bottom of mounting groove is equipped with at least one blind hole, is equipped with the elastic component in the blind hole, the lower extreme of elastic component and the bottom in close contact with of blind hole, the upper end of elastic component and the lower surface in close contact with of mold insert. When the insert is installed in the installation groove, the elastic piece in the blind hole is pressed, and the elastic piece is compressed; when the locking assembly is released, the elastic piece in the blind hole jacks up the insert due to the elastic action of the elastic piece, so that an operator can take out the insert conveniently.

As a further preferable aspect of the present invention, the elastic member is a compression spring.

Compared with the prior art, the utility model, have following advantage:

the utility model discloses thermoforming mold's movable bottom die is equipped with the mounting groove of recessing downwards at the upper surface of movable bottom die main part, the mold insert is installed in the mounting groove through at least one locking Assembly detachable, reequip the movable bottom die through the mode of changing the mold insert, realize that a mould is multi-purpose, for produce the multiple plastic products that the specification is the same and characters or pattern are different, when needs produce another kind of plastic products that have different characters or pattern, only need to demolish locking Assembly can take out original mold insert from the mounting groove on the movable bottom die main part and dismantle, pack into the mounting groove and lock locking Assembly with another mold insert again can; on the one hand, the cost and labor required by replacing the whole movable bottom die in the past are reduced, the work of connecting, calibrating, sealing and the like of a cooling water path after the whole movable bottom die is replaced is not needed, the replacement is very convenient and fast, and the replacement time of the movable bottom die is saved.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

fig. 2 is a schematic exploded view of the movable bottom die body 1 and the insert 2 in fig. 1;

wherein, each is marked as: 1-movable bottom die main body, 2-insert, 201-character and pattern for molding, 3-mounting groove, 301-blind hole, 302-compression spring, 4-locking component, 401-threaded through hole, 402-threaded blind hole, 403-locking screw, 5-side die and 6-ejector rod.

Detailed Description

The following further describes the preferred embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1, a movable bottom die of a thermoforming mold comprises a movable bottom die main body 1 and an insert 2, wherein the upper surface of the movable bottom die main body 1 is provided with a downward concave installation groove 3, the insert 2 is detachably installed in the installation groove 3 through two locking assemblies 4, the shape of the installation groove 3 is generally matched with that of the insert 2, the side wall of the insert 2 is in contact with the wall of the installation groove 3, and the lower surface of the insert 2 is in contact with the bottom of the installation groove 3; when activity die block was applied to thermoforming mold, the inboard of side forms 5 was located to the activity die block, its activity die block main part 1 is connected with the upper end of ejector pin 6.

As shown in fig. 1 and 2, the mounting groove 3 is disposed on the upper surface of the movable bottom die main body 1, two opposite threaded through holes 401 are disposed on the groove wall of the mounting groove 3, and the threaded through holes 401 horizontally penetrate from the groove wall of the mounting groove 3 to the outer side wall of the movable bottom die main body 1; the bottom of mounting groove 3 is equipped with two blind holes 301, is equipped with compression spring 302 in the blind hole 301, and compression spring 302's lower extreme and the bottom in close contact with of blind hole 301, the upper end of elastic component and the lower surface in close contact with of mold insert 2. As shown in fig. 2, the upper surface of the insert 2 is provided with a character pattern 201 for molding, and the opposite side walls of the insert 2 are correspondingly provided with two blind threaded holes 402. As shown in fig. 1 and 2, when the insert 2 is mounted on the movable bottom die body 1, the two threaded blind holes 402 correspond to the two threaded through holes 401 one to one, and are locked by the locking screws 403 passing through the threaded through holes 401 from the outer side wall of the movable bottom die body 1 into the corresponding threaded blind holes 402, and the threaded through holes 401, the threaded blind holes 402, and the locking screws 403 form the locking assembly 4.

When the insert 2 needs to be replaced, only the locking screw 403 needs to be unscrewed from the threaded blind hole 402, the compression spring 302 arranged in the blind hole 301 at the bottom of the mounting groove 3 jacks up the insert 2 due to the elastic action of the compression spring, so that an operator can conveniently take out and replace the insert 2, another insert with different character patterns is placed in the mounting groove 3, the threaded blind hole of the new insert corresponds to the threaded through hole 401 of the movable bottom die, and then the locking screw 403 is screwed down to lock the new insert with the movable bottom die main body 1, so that the replacement is very convenient and rapid, and the replacement time of the movable bottom die is saved.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (4)

1. The utility model provides a movable die block of thermoforming mould which characterized in that: comprises a movable bottom die main body and an insert; the upper surface of activity die block main part is equipped with the mounting groove of undercut, and the mold insert passes through at least one locking Assembly detachable and installs in the mounting groove.

2. The movable bottom die of the thermoforming mold according to claim 1, characterized in that: the locking assembly comprises a locking screw, a threaded through hole and a threaded blind hole, the threaded through hole is formed in the groove wall of the mounting groove, the threaded blind hole is formed in the side wall of the insert, the threaded through hole penetrates through the outer side wall of the movable bottom die main body from the groove wall level of the mounting groove, the threaded blind hole corresponds to the threaded through hole, and the locking screw penetrates through the threaded through hole from the outer side wall of the movable bottom die main body to enter the corresponding threaded blind hole and is locked.

3. The movable bottom die of a thermoforming mold according to claim 1 or 2, characterized in that: the bottom of the mounting groove is provided with at least one blind hole, an elastic piece is arranged in the blind hole, the lower end of the elastic piece is in close contact with the bottom of the blind hole, and the upper end of the elastic piece is in close contact with the lower surface of the insert.

4. The movable bottom die of a thermoforming mold according to claim 3, characterized in that: the elastic piece is a compression spring.

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