CN111716600A

CN111716600A - Mold convenient to replace for injection mold

Info

Publication number: CN111716600A
Application number: CN202010642028.0A
Authority: CN
Inventors: 高雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2020-09-29

Abstract

The invention belongs to the technical field of moulds, in particular to a mould for an injection mould convenient to replace, which aims at solving the problems that the existing injection mould is inconvenient to replace by a user, wastes a large amount of time of the user and is inconvenient to strip materials when in use, and the production efficiency of the injection mould is reduced, the invention provides a scheme which comprises a base mould seat and an upper mould seat, wherein the top of the base mould seat is movably provided with a lower mould, the top of the upper mould seat is fixedly connected with an upper mould cover, one side of the lower mould is communicated with an injection hole, the top of the lower mould is provided with a groove, the groove is internally provided with a stripper plate in a sliding way, the base mould seat is provided with a cavity, a thrust plate is internally provided in the cavity in a sliding way, four external thread rods are rotatably arranged on the inner wall of the bottom of the cavity, and are all in threaded connection with the thrust plate, and simultaneously, the material is convenient to take off, and the production efficiency of the injection mold is improved.

Description

Mold convenient to replace for injection mold

Technical Field

The invention relates to the technical field of molds, in particular to a mold for an injection mold, which is convenient to replace.

Background

The mold is a tool for producing plastic products, and the injection molding is a processing method used for producing some parts with complex shapes in batch production.

The existing injection mold is not convenient for a user to replace, a large amount of time of the user is wasted, and in the use process, the material is not convenient to take off, and the production efficiency of the injection mold is reduced.

Disclosure of Invention

The invention aims to solve the defects that the existing injection mold is inconvenient to replace by a user, wastes a large amount of time of the user, is inconvenient to strip materials during use and reduces the production efficiency of the injection mold, and provides a mold for the injection mold, which is convenient to replace.

In order to achieve the purpose, the invention adopts the following technical scheme:

a mold for an injection mold convenient to replace comprises a base and an upper mold base, wherein the top of the base is movably provided with a lower mold, the top of the upper mold base is fixedly connected with an upper mold cover, one side of the lower mold is communicated with an injection molding hole, the top of the lower mold is provided with a groove, the groove is internally provided with a stripper plate in a sliding manner, the base is provided with a cavity, the cavity is internally provided with a thrust plate in a sliding manner, the inner wall of the bottom of the cavity is rotatably provided with four external threaded rods, the four external threaded rods are all in threaded connection with the thrust plate, the tops of the four external threaded rods are all in threaded connection with an internal lead screw, the top ends of the four internal lead screws are all fixedly provided with a positioning block, the bottom of the base is symmetrically provided with two tension mechanisms, the tension mechanisms are matched with the corresponding two positioning blocks, the top of the thrust plate is fixedly provided with four stripper rods, the inner, the material taking-off rod is matched with the material taking-off plate, two sliding holes are formed in the top of the bottom die base, sliding blocks are arranged in the two sliding holes in a sliding mode, welding plates are fixedly arranged on the tops of the two sliding blocks, two side blocks are fixedly connected to one sides of the two welding plates, the two side grooves are formed in the two sides of the lower die, the side blocks are matched with the corresponding side grooves, a driving mechanism is arranged on the bottom die base, and the two sliding blocks are matched with the driving mechanism.

Preferably, the pulling force mechanism includes installed part, hook template, two bracing pieces, handspike, pressure spring, arc spring, stopper and hand push head, installed part fixed connection in the bottom of upper die base, two bracing pieces all with installed part fixed connection, hook template rotates with two bracing pieces to be connected, handspike and installed part sliding connection, handspike and handspike fixed connection, pressure spring fixed mounting is between handspike and installed part, the outside at the handspike is established to the pressure spring cover, one side contact of handspike and hook template, the handspike can extrude the upset of hook template.

Preferably, the installed part is L type structure, stopper fixed mounting on the top inner wall of installed part, and hook plate and stopper contact, one end of arc spring and one side fixed mounting of hook plate, the other end of arc spring and the inboard fixed mounting of installed part, arc spring provide upset elasticity for hook plate for the hook plate can be steady with the locating piece hook.

Preferably, actuating mechanism includes screw rod, motor and two bearings, and two equal fixed mounting of bearing are on the top inner wall of cavity, the inner circle fixed mounting of screw rod and two bearings, and motor fixed connection is in one side of die holder, and the output shaft of motor and the one end fixed mounting of screw rod all set up threaded hole on two sliding blocks, and the screw thread of two screw holes revolves to opposite, and two screw holes all with screw rod threaded connection, and the motor drives the screw rod and rotates, and the screw rod drives two sliding blocks through two screw holes and is close to each other or keep away from each other.

Preferably, four external thread holes are longitudinally formed in the thrust plate, the four external thread holes are in threaded connection with the four external thread rods respectively, the screw rod grooves are formed in the tops of the four external thread rods, the four internal thread rods are in threaded connection with the four screw rod grooves respectively, the internal thread rods can drive the corresponding external thread rods to rotate when moving, and the four external thread rods can drive the thrust plate to move when rotating simultaneously.

Preferably, four telescopic supporting rods are fixedly mounted at the top of the base seat, the top ends of the four telescopic supporting rods are fixedly connected with the bottoms of the four positioning blocks respectively, and the telescopic supporting rods limit the positioning blocks.

Preferably, the bottom of thrust plate is fixedly provided with one end of a plurality of extension springs, the other end of each extension spring is fixedly arranged with the inner wall of the bottom of the cavity, and the extension springs provide resetting tension for the thrust plate.

Preferably, the breach groove has all been seted up to the both sides of sliding block, and equal fixed mounting has spacing on the both sides inner wall of sliding hole, spacing and the breach groove sliding connection that corresponds, spacing and breach groove cooperation carry on spacingly to the sliding block.

Preferably, the top ends of the four stripping rods are fixedly provided with magnetic blocks, the four magnetic blocks attract the stripping plates, the inner wall of the bottom of the groove is fixedly provided with a plurality of elastic pads, and the magnetic blocks can drive the stripping plates to move up and down.

Preferably, the equal fixed mounting in both sides of upper die cover has the installation piece, and installation piece and upper die base fixed connection, two constant head tanks have been seted up at the top of die holder, and the bottom fixed mounting of lower mould has two locating pieces, locating piece and the constant head tank looks adaptation that corresponds, and the locating piece can be fixed a position the lower mould with the constant head tank, even on not unidimensional lower mould, the interval of two locating pieces is fixed to be set up, can adapt to and install with two constant head tanks.

Compared with the prior art, the invention has the advantages that:

(1) according to the scheme, the upper die cover is installed at the bottom of the upper die base through the screws and the installation blocks, the lower die is placed at the top of the bottom die base, the positioning blocks enter the corresponding positioning grooves, the lower die can be positioned, the screw is driven by the motor to rotate, the screw drives the two welding plates to be close to each other through the two sliding blocks, the welding plates drive the corresponding two side blocks to enter the corresponding two side grooves, and then the lower die can be installed;

(2) when the lower die is disassembled, the two welding plates can be mutually far away by reversely starting the motor, the side blocks are separated from the corresponding side grooves, the lower die can be taken down, and the lower die is convenient to replace;

(3) the upper die base and the upper die cover are driven to move downwards by the driving mechanism, the upper die cover is in contact with the lower die to seal the profile groove, the upper die base drives the two hook-shaped plates to move downwards by the two mounting pieces, the hook-shaped plates are in contact with the two corresponding positioning blocks, the hook-shaped plates are stably hooked with the two corresponding positioning blocks under the elastic action of the arc-shaped spring, after injection molding and cooling are completed, the upper die base moves upwards to leave the lower die, the upper die base drives the four positioning blocks to move upwards by the two mounting pieces and the two hook-shaped plates, the four positioning blocks respectively drive the four inner screw rods to move upwards, the inner screw rods drive the corresponding outer screw rods to rotate, the four outer screw rods simultaneously rotate to drive the thrust plate to move upwards, and the thrust plate drives materials to leave the profile groove by the four stripping rods and the;

(4) after taking off the material, two handspikes of this scheme extrusion are close to each other, and the handspike extrudees the upset of hook type board for the hook type board leaves two locating pieces that correspond, provides the pulling force that resets for the thrust plate through the extension spring, makes thrust plate downstream, and four take off the material pole and drive and take off flitch downstream and reset, and four internal thread poles downstream simultaneously resets and can continue to use.

The invention has simple structure and convenient operation, is convenient for replacing the lower die, saves time, is convenient for stripping materials and improves the production efficiency of the injection mold.

Drawings

FIG. 1 is a schematic structural view of a mold for an injection mold according to the present invention, which is easy to replace;

FIG. 2 is a schematic structural view of part A of a mold for an injection mold, which is provided by the present invention and is easy to replace;

FIG. 3 is a schematic structural view of a portion B of a mold for an injection mold, which is provided by the present invention and is easy to replace;

FIG. 4 is a schematic perspective view of the male screw rod, the female screw rod, the thrust plate and the positioning block of the mold for injection mold, which is provided by the present invention and is easy to replace;

FIG. 5 is a schematic perspective view of an installation member, a support rod, a hook plate, a hand push rod, a pressure spring and a hand push head of the mold for injection mold, which is provided by the invention and is convenient to replace;

fig. 6 is a schematic perspective view of a welding plate, a side block, and a sliding block of the mold for an injection mold, which are provided by the present invention and are easy to replace.

In the figure: the die comprises a base die holder 1, a lower die holder 2, an upper die holder 3, an upper die cover 4, a cavity 5, an external threaded rod 6, an internal screw rod 7, a thrust plate 8, a tension spring 9, a stripping rod 10, a groove 11, a stripping plate 12, a positioning groove 13, a positioning block 14, a pushing head 15, a mounting part 16, a supporting rod 17, a hook-shaped plate 18, a hand push rod 19, a pressure spring 20, an arc spring 21, a screw rod 22, a motor 23, a sliding hole 24, a sliding block 25, a threaded hole 26, a welding plate 27, a side block 28, a side groove 29, a screw rod groove 30, an external threaded hole 31, a telescopic supporting rod 32, a limiting strip 33, a notch groove 34, a bearing 35, a magnetic block 36, a stripping hole 37, a mounting block 38, a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-6, a mold for an injection mold convenient to replace comprises a base mold 1 and an upper mold base 3, wherein a lower mold 2 is movably installed at the top of the base mold 1, an upper mold cover 4 is fixedly connected to the top of the upper mold base 3, one side of the lower mold 2 is communicated with an injection hole, a groove 11 is formed at the top of the lower mold 2, a stripper plate 12 is slidably installed in the groove 11, a cavity 5 is formed in the base mold 1, a thrust plate 8 is slidably installed in the cavity 5, four external threaded rods 6 are rotatably installed on the inner wall of the bottom of the cavity 5, the four external threaded rods 6 are in threaded connection with the thrust plate 8, the tops of the four external threaded rods 6 are in threaded connection with inner lead screws 7, positioning blocks 14 are fixedly installed at the tops of the four inner lead screws 7, two tension mechanisms are symmetrically arranged at the bottom of the base mold 1 and are matched with the corresponding two positioning blocks 14, and four stripper rods, seted up four on the top inner wall of cavity 5 and taken off material hole 37, take off material pole 10 and take off material hole 37 sliding connection to taking off in one, take off material pole 10 and take off flitch 12 looks adaptation, two sliding holes 24 have been seted up at the top of die block seat 1, equal slidable mounting has sliding block 25 in two sliding holes 24, the equal fixed mounting in top of two sliding block 25 has weld plate 27, two equal fixedly connected with in one side that two weld plate 27 are close to each other have two side pieces 28, side groove 29 has all been seted up to the both sides of lower mould 2, side piece 28 and the 29 looks adaptations of corresponding side groove, be provided with actuating mechanism on the die block seat 1, two sliding blocks 25 all with actuating mechanism looks adaptations.

In this embodiment, the pulling force mechanism includes installed part 16, hook plate 18, two bracing pieces 17, handspike 19, pressure spring 20, arc spring 21, stopper 39 and hand push head 15, installed part 16 fixed connection is in the bottom of upper die base 3, two bracing pieces 17 all with installed part 16 fixed connection, hook plate 18 rotates with two bracing pieces 17 to be connected, handspike 19 and installed part 16 sliding connection, hand push head 15 and handspike 19 fixed connection, pressure spring 20 fixed mounting is between hand push head 15 and installed part 16, the outside at handspike 19 is established to pressure spring 20 cover, handspike 19 contacts with one side of hook plate 18, handspike 19 can extrude hook plate 18 upset.

In this embodiment, installed part 16 is L type structure, and stopper 39 fixed mounting is on the top inner wall of installed part 16, and hook plate 18 and stopper 39 contact, one end of arc spring 21 and one side fixed mounting of hook plate 18, the other end of arc spring 21 and the inboard fixed mounting of installed part 16, arc spring 21 provide upset elasticity for hook plate 18 can be steady with locating piece 14 hook.

In this embodiment, actuating mechanism includes screw rod 22, motor 23 and two bearings 35, the equal fixed mounting of two bearings 35 is on the top inner wall of cavity 5, screw rod 22 and the inner circle fixed mounting of two bearings 35, motor 23 fixed connection is in one side of die holder 1, the output shaft of motor 23 and the one end fixed mounting of screw rod 22, threaded hole 26 has all been seted up on two sliding blocks 25, the screw thread of two threaded hole 26 revolves to opposite, two threaded hole 26 all with screw rod 22 threaded connection, motor 23 drives screw rod 22 and rotates, screw rod 22 drives two sliding blocks 25 through two threaded hole 26 and is close to each other or keeps away from each other.

In this embodiment, four external screw holes 31 are longitudinally formed in the thrust plate 8, the four external screw holes 31 are respectively in threaded connection with the four external screw rods 6, the screw rod grooves 30 are formed in the tops of the four external screw rods 6, the four internal screw rods 7 are respectively in threaded connection with the four screw rod grooves 30, the internal screw rods 7 move to drive the corresponding external screw rods 6 to rotate, and the four external screw rods 6 rotate simultaneously to drive the thrust plate 8 to move.

In this embodiment, the top of the base die holder 1 is fixedly provided with four telescopic supporting rods 32, the top ends of the four telescopic supporting rods 32 are respectively fixedly connected with the bottoms of the four positioning blocks 14, and the telescopic supporting rods 32 limit the positioning blocks 14, so that the positioning blocks 14 and the inner screw 7 can only move vertically.

In this embodiment, the bottom fixed mounting of thrust plate 8 has the one end of a plurality of extension springs 9, and the other end of a plurality of extension springs 9 all with the bottom inner wall fixed mounting of cavity 5, extension spring 9 provides the pulling force that resets for thrust plate 8.

In this embodiment, breach groove 34 has all been seted up to sliding block 25's both sides, and equal fixed mounting has spacing 33 on the both sides inner wall of sliding hole 24, and spacing 33 and the 34 sliding connection in breach groove that corresponds, spacing 33 and the cooperation in breach groove 34 carry on spacingly to sliding block 25.

In this embodiment, the top ends of the four stripping rods 10 are fixedly provided with the magnetic blocks 36, the four magnetic blocks 36 attract the stripping plate 12, the inner wall of the bottom of the groove 11 is fixedly provided with the elastic pads 40, and the magnetic blocks 36 can drive the stripping plate 12 to move up and down.

In this embodiment, the equal fixed mounting in both sides of last mold cover 4 has installation piece 38, installation piece 38 and upper die base 3 fixed connection, two constant head tanks 13 have been seted up at the top of bottom die base 1, the bottom fixed mounting of lower mould 2 has two locating pieces 14, locating piece 14 and the constant head tank 13 looks adaptation that corresponds, locating piece 14 can fix a position lower mould 2 with constant head tank 13, even on not unidimensional lower mould 2, the interval of two locating pieces 14 is fixed to be set up, can adapt to and install with two constant head tanks 13.

Example two

Referring to fig. 1-6, a mold for an injection mold convenient to replace comprises a base mold 1 and an upper mold base 3, wherein a lower mold 2 is movably installed at the top of the base mold 1, the top of the upper mold base 3 is fixedly connected with an upper mold cover 4 through screws, one side of the lower mold 2 is communicated with an injection molding hole, a groove 11 is formed at the top of the lower mold 2, a stripper plate 12 is slidably installed in the groove 11, a cavity 5 is formed in the base mold 1, a thrust plate 8 is slidably installed in the cavity 5, four external threaded rods 6 are rotatably installed on the inner wall of the bottom of the cavity 5, the four external threaded rods 6 are in threaded connection with the thrust plate 8, the tops of the four external threaded rods 6 are in threaded connection with inner lead screws 7, positioning blocks 14 are fixedly installed at the tops of the four inner lead screws 7 through welding, two tension mechanisms are symmetrically arranged at the bottom of the base mold 1 and, four stripping rods 10 are installed at the top of the thrust plate 8 through welding and fixing, four stripping holes 37 are formed in the inner wall of the top of the cavity 5, the stripping rods 10 are connected with the stripping holes 37 in one in a sliding mode, the stripping rods 10 are matched with the stripping plates 12, two sliding holes 24 are formed in the top of the bottom die holder 1, sliding blocks 25 are installed in the two sliding holes 24 in a sliding mode, welding plates 27 are installed at the tops of the two sliding blocks 25 through welding and fixing, two side face blocks 28 are fixedly connected to one sides, close to each other, of the two welding plates 27, side face grooves 29 are formed in the two sides of the lower die 2, the side face blocks 28 are matched with the corresponding side face grooves 29, a driving mechanism is arranged on the bottom die holder 1, and the two sliding blocks 25 are matched with the driving mechanism.

In this embodiment, the pulling force mechanism includes installed part 16, hook plate 18, two bracing pieces 17, handspike 19, the pressure spring 20, arc spring 21, stopper 39 and hand push 15, installed part 16 passes through screw fixed connection in the bottom of upper die base 3, two bracing pieces 17 all pass through screw fixed connection with installed part 16, hook plate 18 rotates with two bracing pieces 17 to be connected, handspike 19 and installed part 16 sliding connection, hand push 15 passes through screw fixed connection with handspike 19, pressure spring 20 passes through welded fastening and installs between hand push 15 and installed part 16, the outside at handspike 19 is established to pressure spring 20 cover, handspike 19 contacts with one side of hook plate 18, handspike 19 can extrude hook plate 18 upset.

In this embodiment, installed part 16 is L type structure, and stopper 39 passes through welded fastening and installs on the top inner wall of installed part 16, and hook-shaped board 18 and stopper 39 contact, and welded fastening installs is passed through with one side of hook-shaped board 18 to the one end of arc spring 21, and welded fastening installs is passed through with the inboard of installed part 16 to the other end of arc spring 21, and arc spring 21 provides upset elasticity for hook-shaped board 18 can be steady with locating piece 14 hook.

In this embodiment, actuating mechanism includes screw rod 22, motor 23 and two bearings 35, two bearings 35 all install on the top inner wall of cavity 5 through welded fastening, screw rod 22 passes through welded fastening with the inner circle of two bearings 35 and installs, motor 23 passes through one side of screw fixed connection at die holder 1, welded fastening is passed through to the output shaft of motor 23 and the one end of screw rod 22, threaded hole 26 has all been seted up on two sliding blocks 25, the screw thread turning direction of two threaded hole 26 is opposite, two threaded hole 26 all with screw rod 22 threaded connection, motor 23 drives screw rod 22 and rotates, screw rod 22 drives two sliding blocks 25 through two threaded hole 26 and is close to each other or keep away from each other.

In this embodiment, four telescopic supporting rods 32 are fixedly installed at the top of the base seat 1 by welding, the top ends of the four telescopic supporting rods 32 are respectively connected with the bottoms of the four positioning blocks 14 by screws, and the telescopic supporting rods 32 limit the positioning blocks 14, so that the positioning blocks 14 and the inner screw 7 can only move vertically.

In this embodiment, the bottom of thrust plate 8 is through welded fastening installation with the one end of a plurality of extension springs 9, and the other end of a plurality of extension springs 9 all passes through welded fastening installation with the bottom inner wall of cavity 5, and extension spring 9 provides the pulling force that resets for thrust plate 8.

In this embodiment, breach groove 34 has all been seted up to sliding block 25's both sides, all installs spacing strip 33 through welded fastening on the both sides inner wall of sliding hole 24, spacing strip 33 and the 34 sliding connection in breach groove that corresponds, and spacing strip 33 and the cooperation in breach groove 34 carry on spacingly to sliding block 25.

In this embodiment, four tops of taking off material pole 10 all have magnetic block 36 through welded fastening, and four magnetic block 36 all attract mutually with taking off flitch 12, have a plurality of cushion 40 through welded fastening on the bottom inner wall of type groove 11, and magnetic block 36 can drive and take off flitch 12 and reciprocate.

In this embodiment, all there is installation piece 38 in the both sides of going up mold cover 4 through welded fastening, installation piece 38 passes through screw fixed connection with upper die base 3, two constant head tanks 13 have been seted up at the top of die holder 1, there are two locating pieces 14 in the bottom of lower mould 2 through welded fastening, locating piece 14 and the constant head tank 13 looks adaptation that corresponds, locating piece 14 can fix a position lower mould 2 with constant head tank 13, even on not unidimensional lower mould 2, the interval of two locating pieces 14 is fixed to be set up, can adapt to and install with two constant head tanks 13.

In this embodiment, when in use, the bottom die holder 1 is installed on a machine, the upper die holder 3 is installed on a lifting driving mechanism of the machine, the upper die cover 4 is installed at the bottom of the upper die holder 3 through screws and an installation block 38, the lower die 2 is placed at the top of the bottom die holder 1, so that the positioning block 14 enters the corresponding positioning slot 13, the lower die 2 can be positioned, the screw 22 is driven by the motor 23 to rotate, the screw 22 drives the two sliding blocks 25 to approach each other through the two threaded holes 26, the two sliding blocks 25 respectively drive the two welding plates 27 to approach each other, the welding plates 27 drive the corresponding two side blocks 28 to enter the corresponding two side slots 29, the lower die 2 can be installed, when in disassembly, only the motor 23 needs to be started reversely, the two welding plates 27 can be kept away from each other, the side blocks 28 leave the corresponding side slots 29, the lower die 2 can be taken down and replaced conveniently, wherein the upper die cover 4 can be adapted to the lower dies 2 with various sizes, when in use, the upper die base 3 and the upper die cover 4 are driven to move downwards by the lifting driving mechanism, the upper die cover 4 is in contact with the lower die 2 and is sealed against the groove 11, the upper die base 3 drives the two hook-shaped plates 18 to move downwards by the two mounting pieces 16, the hook-shaped plates 18 are in contact with the two corresponding positioning blocks 14, under the elastic action of the arc-shaped spring 21, the hook-shaped plates 18 are stably hooked with the two corresponding positioning blocks 14, injection molding is carried out through injection molding holes, after cooling is finished, the upper die base 3 is driven to move upwards by the driving mechanism to leave the lower die 2, the upper die base 3 drives the four positioning blocks 14 to move upwards by the two mounting pieces 16 and the two hook-shaped plates 18, the four positioning blocks 14 respectively drive the four inner lead screws 7 to move upwards, the inner lead screws 7 move upwards to drive the corresponding outer lead screws 6 to rotate, the thrust plate 8 pushes materials to leave the groove 11 through the four stripping rods 10 and the stripping plate 12, the materials can be conveniently stripped, after the materials are taken down, the two pushing rods 19 are pushed to be close to each other, the pushing rods 19 push the hook plate 18 to overturn, the hook plate 18 leaves the corresponding two positioning blocks 14, reset pulling force is provided for the thrust plate 8 through the tension spring 9, the thrust plate 8 moves downwards, the four stripping rods 10 drive the stripping plate 12 to move downwards to reset, and meanwhile, the four inner screw rods 7 move downwards to reset and can be continuously used.

Claims

1. A mold for an injection mold convenient to replace comprises a base seat (1) and an upper seat (3), wherein the top of the base seat (1) is movably provided with a lower mold (2), the top of the upper seat (3) is fixedly connected with an upper mold cover (4), one side of the lower mold (2) is communicated with an injection molding hole, the top of the lower mold (2) is provided with a shaped groove (11), the mold is characterized in that the shaped groove (11) is internally provided with a stripper plate (12) in a sliding manner, the base seat (1) is provided with a cavity (5), the cavity (5) is internally provided with a thrust plate (8) in a sliding manner, the inner wall of the bottom of the cavity (5) is rotatably provided with four external screw rods (6), the four external screw rods (6) are all in threaded connection with the thrust plate (8), the tops of the four external screw rods (6) are all in threaded connection with an internal screw rod (7), and, the bottom of the bottom die holder (1) is symmetrically provided with two tension mechanisms, the tension mechanisms are matched with two corresponding positioning blocks (14), the top of the thrust plate (8) is fixedly provided with four stripping rods (10), the inner wall of the top of the cavity (5) is provided with four stripping holes (37), the stripping rods (10) are in sliding connection with the stripping holes (37) in one die, the stripping rods (10) are matched with the stripping plate (12), the top of the bottom die holder (1) is provided with two sliding holes (24), sliding blocks (25) are respectively and slidably arranged in the two sliding holes (24), the tops of the two sliding blocks (25) are respectively and fixedly provided with a welding plate (27), one side of the two welding plates (27) close to each other is respectively and fixedly connected with two side face blocks (28), the two sides of the lower die (2) are respectively provided with side face grooves (29), the side face blocks (28) are matched with the corresponding side face grooves (29), the bottom die holder (1) is provided with a driving mechanism, and the two sliding blocks (25) are matched with the driving mechanism.

2. The mold for injection mold easy to replace according to claim 1, the tension mechanism comprises an installation piece (16), a hook-shaped plate (18), two support rods (17), a hand push rod (19), a pressure spring (20), an arc-shaped spring (21), a limiting block (39) and a hand push head (15), the installation piece (16) is fixedly connected to the bottom of the upper die base (3), the two support rods (17) are fixedly connected with the installation piece (16), the hook-shaped plate (18) is rotatably connected with the two support rods (17), the hand push rod (19) is slidably connected with the installation piece (16), the hand push head (15) is fixedly connected with the hand push rod (19), the pressure spring (20) is fixedly installed between the hand push head (15) and the installation piece (16), the pressure spring (20) is sleeved on the outer side of the hand push rod (19), and the hand push rod (19) is in contact with one side of the hook-shaped.

3. The mold for the injection mold convenient to replace according to claim 2, characterized in that the mounting member (16) is an L-shaped structure, the limiting block (39) is fixedly mounted on the inner wall of the top of the mounting member (16), the hook plate (18) is in contact with the limiting block (39), one end of the arc spring (21) is fixedly mounted on one side of the hook plate (18), and the other end of the arc spring (21) is fixedly mounted on the inner side of the mounting member (16).

4. The mold convenient to replace of claim 1, wherein the driving mechanism comprises a screw (22), a motor (23) and two bearings (35), the two bearings (35) are fixedly mounted on the inner wall of the top of the cavity (5), the screw (22) is fixedly mounted on the inner rings of the two bearings (35), the motor (23) is fixedly connected to one side of the base mold seat (1), the output shaft of the motor (23) is fixedly mounted on one end of the screw (22), the two sliding blocks (25) are respectively provided with a threaded hole (26), the thread directions of the two threaded holes (26) are opposite, and the two threaded holes (26) are respectively in threaded connection with the screw (22).

5. The mold for the injection mold convenient to replace according to claim 1, wherein the thrust plate (8) is longitudinally provided with four external threaded holes (31), the four external threaded holes (31) are respectively in threaded connection with four external threaded rods (6), the tops of the four external threaded rods (6) are respectively provided with screw grooves (30), and the four internal screw rods (7) are respectively in threaded connection with the four screw grooves (30).

6. The mold for the injection mold convenient to replace according to claim 1, wherein four telescopic supporting rods (32) are fixedly installed at the top of the base mold seat (1), and the top ends of the four telescopic supporting rods (32) are respectively and fixedly connected with the bottoms of the four positioning blocks (14).

7. The mold convenient to replace of claim 1, wherein one end of each of the plurality of tension springs (9) is fixedly mounted at the bottom of the thrust plate (8), and the other end of each of the plurality of tension springs (9) is fixedly mounted on the inner wall of the bottom of the cavity (5).

8. The mold convenient to replace of claim 1, wherein the sliding block (25) is provided with a notch groove (34) on each side, the inner walls of the sliding holes (24) on each side are fixedly provided with a limiting strip (33), and the limiting strips (33) are slidably connected with the corresponding notch grooves (34).

9. The mold for the injection mold convenient to replace according to claim 1, characterized in that the top ends of the four stripping rods (10) are fixedly provided with magnetic blocks (36), the four magnetic blocks (36) are attracted with the stripping plate (12), and the inner wall of the bottom of the shaped groove (11) is fixedly provided with a plurality of elastic pads (40).

10. The mold convenient to replace of claim 1, wherein the upper mold cover (4) is fixedly provided with mounting blocks (38) at both sides thereof, the mounting blocks (38) are fixedly connected with the upper mold base (3), the top of the lower mold base (1) is provided with two positioning grooves (13), the bottom of the lower mold (2) is fixedly provided with two positioning blocks (14), and the positioning blocks (14) are matched with the corresponding positioning grooves (13).