CN215661666U - Injection mold of secondary slide drawing of patterns - Google Patents

Abstract

The application relates to an injection mold for secondary slide demolding, belonging to the technical field of injection molds; the mould comprises a fixed mould plate and a movable mould plate, wherein a first slide assembly is arranged between the fixed mould plate and the movable mould plate, a second slide assembly is arranged below the first slide assembly, and when the mould is opened, the first slide assembly is opened firstly, and the second slide assembly is opened later; the first slide block assembly comprises two first slide blocks which are symmetrically arranged, the first slide block assembly also comprises two second slide blocks which are symmetrically arranged, row position insert pins are fixed on the sides, close to each other, of the two second slide blocks, semicircular connecting holes are formed in the sides, close to each other, of the two first slide blocks, after die assembly is carried out, the two semicircular connecting holes form a complete hole, the row position insert pins are located in the hole, the second slide block assembly comprises two third slide blocks which are symmetrically arranged, and the third slide blocks are located below the first slide blocks; this application has the effect of drawing of patterns smoothly with the product.

Description

Injection mold of secondary slide drawing of patterns

Technical Field

The application relates to the technical field of injection molds, in particular to an injection mold capable of realizing secondary slide demolding.

Background

An injection mold is a tool for producing plastic products, and is also a tool for giving the plastic products a finished structure and precise dimensions. Specifically, the plastic melted by heat is injected into a mold cavity of an injection mold by high pressure, and various products are obtained after cooling and solidification.

Some products have buckle positions, can not be directly demoulded, and need to adopt a slide structure to assist demoulding, but the structure can only be used for demoulding products with one-direction buckle positions, and if the products have buckle positions in multiple directions, the traditional slide structure can not demould the products, and the products can be damaged by pulling.

SUMMERY OF THE UTILITY MODEL

In order to demold the product smoothly, this application provides an injection mold of secondary slide drawing of patterns.

The application provides an injection mold of secondary slide drawing of patterns adopts following technical scheme:

an injection mold for secondary slide demolding comprises a fixed mold plate and a movable mold plate, wherein one side, close to the movable mold plate, of the fixed mold plate is in contact with the movable mold plate, a first slide assembly is arranged between the fixed mold plate and the movable mold plate, a second slide assembly is arranged below the first slide assembly, and when the mold is opened, the first slide assembly is opened firstly, and the second slide assembly is opened later;

the first row position assembly comprises two first sliding blocks which are symmetrically arranged, the first row position assembly also comprises two second sliding blocks which are symmetrically arranged, and the two first sliding blocks are positioned between the two second sliding blocks; the row position insert pins are fixed on the sides, close to each other, of the two second sliding blocks, semicircular connecting holes are formed in the sides, close to each other, of the two first sliding blocks, after the die assembly is carried out, the two semicircular connecting holes form a complete hole, and the row position insert pins are located in the hole;

the second slide block is positioned below the first slide block; during the die sinking, two first sliders move to the direction of keeping away from each other, and two second sliders move to the direction of keeping away from each other, and then two third sliders move to the direction of keeping away from each other.

Through adopting above-mentioned technical scheme, when the mould carries out the die sinking, the movable mould board removes to the direction of keeping away from the fixed die board, and when the movable mould board removed, two first sliders removed to the direction of keeping away from each other, and two second sliders removed to the direction of keeping away from each other, and then two third sliders removed to the direction of keeping away from each other. When the mold is opened, the first slide block moves first, the two first slide blocks go out of the slide from the left side and the right side of the upper surface of the product, then the second slide block moves, and the two third slide blocks go out of the slide from the left side and the right side of the lower surface of the product, so that the film is forcibly released.

Two first slider take out from the left and right sides above the product earlier, make things convenient for two third slider subassembly to detain position left and right sides below the product and take off the mould by force, give and take off the product when taking off the mould by force and warp the space, the smooth drawing of patterns of the product of being convenient for.

Optionally, a first slide groove is formed in one side, close to the movable template, of the fixed template, a second slide groove is formed in one side, close to the fixed template, of the movable template, and the two first slide blocks are located in the first slide groove and the second slide groove respectively; the fixed die plate is connected with four first inclined guide pillars, each first sliding block is provided with two first guide holes, and one end of each first inclined guide pillar, which is far away from the fixed die plate, is inserted into the corresponding first guide hole;

the two sides of the first line slot of the fixed die plate are respectively provided with a third line slot, the two sides of the second line slot of the movable die plate are respectively provided with a fourth line slot, the second slide block is positioned in the third line slot and the fourth line slot, the fixed die plate is connected with a second inclined guide post, and the second slide block is provided with a second guide hole for the second inclined guide post to be inserted;

a fifth slide groove is formed below the second slide groove of the movable template, the two third slide blocks are positioned in the fifth slide groove, an oil cylinder is arranged on one side, far away from each other, of each of the two third slide blocks, the oil cylinder is fixed on the side wall of the fixed template, and a piston rod of the oil cylinder is fixed with the third slide blocks.

By adopting the technical scheme, when the mold is opened, the movable mold plate moves towards the direction far away from the fixed mold plate, when the movable mold plate moves, the first inclined guide posts gradually extend out of the first guide holes, and the two first sliding blocks move towards the directions far away from each other under the action of the first inclined guide posts; in a similar way, the two second sliding blocks also move towards the direction away from each other under the action of the second inclined guide post. And then, the two third sliding blocks are driven by the respective oil cylinders to move towards the directions away from each other, and the first slide assembly and the second slide assembly are all opened, so that the product can be conveniently demoulded.

Optionally, two symmetrically arranged stop blocks are fixed on one side of the fixed die plate close to the movable die plate, the two stop blocks are respectively located in the two second slide grooves, and the two stop blocks respectively abut against the side walls of the two first slide blocks.

Through adopting above-mentioned technical scheme, after the compound die, two dogs support the lateral wall of two first sliders respectively tightly, and two dogs play and support tight effect respectively to two first sliders, and after the compound die, the dog supports tight first slider.

Optionally, a wear-resistant block is fixed on one side of the stop block close to the first slide block, a wear-resistant block is also fixed on a groove wall of the first slide groove, and after the mold is closed, the wear-resistant block is in contact with a side wall of the first slide block.

Through adopting above-mentioned technical scheme, when first slider slided, first slider and wear-resisting piece sliding friction, the friction condition between the cell wall of wear-resisting piece has reduced first slider and first line groove has been reduced in the setting of wear-resisting piece.

Optionally, the two ends of the first slider are provided with first pressing blocks, a first mounting groove is formed in one side, close to the fixed die plate, of the movable die plate, the first mounting groove is communicated with the second slide groove, the first pressing blocks are located in the first mounting groove, the first pressing blocks protrude out of the first mounting groove, the bottom of the first pressing blocks is higher than the bottom wall of the second slide groove, first guide blocks are fixed at the two ends of the first slider, and the first pressing blocks are located between the groove walls of the first slide groove and the second slide groove.

By adopting the technical scheme, when the first sliding block moves in the second slide groove, the first guide block slides between the groove walls of the first pressing block and the second slide groove, so that the stability of the first sliding block is improved.

Optionally, one side that the movable mould board kept away from the fixed mould board is provided with the movable mould bedplate, is fixed with the cushion that two symmetries set up between movable mould board and the movable mould bedplate, is provided with the push pedal between two cushions, and the push pedal is kept away from one side of movable mould bedplate is fixed with the thimble board, is fixed with the silk section of thick bamboo on the thimble board, is fixed with silk section of thick bamboo inner needle on the movable mould bedplate, and the silk section of thick bamboo overlaps on the silk section of thick bamboo inner needle.

Through adopting above-mentioned technical scheme, after two third sliders break away from with the product, push pedal and thimble board remove to the direction of keeping away from the movable mould bedplate under the effect of external force, and the silk section of thick bamboo moves along with the thimble board, breaks away from the product on the needle in the silk section of thick bamboo and the needle in the silk section of thick bamboo, and the product drops from the needle top in the silk section of thick bamboo.

Optionally, a first bolt is arranged on the side wall of the fixed template, a locking plate is arranged on the side wall of the fixed template, the first bolt penetrates through one end of the locking plate and is in threaded connection with the fixed template, a second bolt located right below the first bolt is arranged on the movable template, and a locking groove clamped with the second bolt is formed in one end, away from the first bolt, of the locking plate.

Through adopting above-mentioned technical scheme, behind the mould compound die, with locking groove and second bolt joint to it is fixed with movable mould board and fixed die plate, fixed die plate and fixed die plate are fixed through the locking board, and fixed die plate and movable mould board take place the possibility of rocking when reducing injection mold.

Optionally, one side of the fixed die plate, which is far away from the movable die plate, is provided with a fixed die base plate, the fixed die plate and the fixed die base plate are fixed through bolts, the side walls of the fixed die plate and the fixed die base plate are provided with a fixing assembly, the fixing assembly comprises an installation block, the installation block is provided with two locking bolts, one of the locking bolts penetrates through the installation block and is in threaded connection with the fixed die base plate, and the other locking bolt penetrates through the installation block and is in threaded connection with the fixed die plate.

Through adopting above-mentioned technical scheme, be provided with the installation piece on the lateral wall of fixed die plate and cover half bedplate, the installation piece is further fixed with fixed die plate and cover half bedplate, has increased the joint strength of fixed die plate and cover half bedplate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the two first sliding blocks are firstly pulled out from the left side and the right side of the upper surface of the product, so that the two third sliding block assemblies can be conveniently and forcibly stripped from the left side and the right side of the buckling position below the product, a space is provided for the deformation of the product during the forced stripping, and the smooth stripping of the product is facilitated;

2. when the first sliding block slides, the first sliding block and the wear-resistant block are in sliding friction, and the friction condition between the first sliding block and the groove wall of the first line slot is reduced due to the arrangement of the wear-resistant block;

3. after the mold is closed, the locking groove is clamped with the second bolt, so that the movable mold plate and the fixed mold plate are fixed, the movable mold plate and the fixed mold plate are fixed through the locking plate, and the possibility of shaking of the fixed mold plate and the movable mold plate during injection molding is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a cross-sectional view a-a of fig. 1.

Fig. 3 is a cross-sectional view B-B of fig. 1.

FIG. 4 is a schematic view of a first slider and a second slider embodying the present application.

FIG. 5 is a schematic view of a fifth row of slots and a third slider embodying the present invention.

Fig. 6 is an exploded schematic view of the first, second and third sliders.

FIG. 7 is a schematic view of a cartridge and thimble embodying the present application.

Figure 8 is a schematic view of a product embodying the present application.

Fig. 9 is a schematic view of a locking assembly and a securing assembly embodying the present application.

Description of reference numerals: 1. a stationary die assembly; 11. a fixed die base plate; 12, fixing a template; 121. a first line slot; 122. a third bit slot; 123. a first inclined guide post; 124. connecting columns; 125. a first jack; 126. a second jack; 127. a stopper; 128. a wear-resistant block; 129. a second inclined guide post; 2. a movable die assembly; 21. moving the template; 211. a second line slot; 212. a fourth bit slot; 213. a first pressing block; 214. a first mounting groove; 215. a second mounting groove; 216. a second pressing block; 217. a second guide block; 218. an accommodation hole; 219. a fifth column slot; 2191. a third mounting groove; 2192. a third pressing block; 22. a movable mould seat plate; 221. an inner needle of the ejector sleeve; 222. a through hole; 223. connecting blocks; 23. cushion blocks; 3. a slide demolding mechanism; 31. a first row bit assembly; 311. a first slider; 3111. a first guide hole; 3112. a first guide block; 3113. connecting holes; 312. a second slider; 3121. a second guide hole; 3122. inserting a pin in a line; 32. a second row bit assembly; 321. a third slider; 3211. a third guide block; 322. an oil cylinder; 323. mounting a plate; 4. a pouring gate; 41. a main flow channel; 42. a shunt channel; 5. pushing the plate; 51. an ejector plate; 511. a thimble; 52. a support pillar; 53. a wire barrel 6, a locking component; 61. a locking plate; 611. a locking groove; 62. a first bolt; 63. a second bolt; 7. a fixing assembly; 71. mounting blocks; 72. locking the bolt; 8. producing a product; 81. a first connecting pipe; 82. a second connecting pipe; 83. a first buckling position; 84. and a second buckling position.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

The embodiment of the application discloses injection mold of secondary slide drawing of patterns. Referring to fig. 1 and 2, the injection mold comprises a fixed mold component 1 and a movable mold component 2, a slide demolding mechanism 3 is arranged between the fixed mold component 1 and the movable mold component 2, the slide demolding mechanism 3 comprises a first slide component 31 and a second slide component 32, and the first slide component 31 is positioned above the second slide component 32.

The fixed die assembly 1 comprises a fixed die base plate 11 and a fixed die plate 12, and the fixed die base plate 11 and the fixed die plate 12 are fixed through bolts. The movable mould component 2 comprises a movable mould plate 21 and a movable mould base plate 22, two symmetrically arranged cushion blocks 23 are connected between the movable mould plate 21 and the movable mould base plate 22, a countersunk bolt is arranged on one side, away from the movable mould plate 21, of the movable mould base plate 22, and a bolt rod of the countersunk bolt penetrates through the movable mould base plate 22 and the cushion blocks 23 and is in threaded connection with the movable mould plate 21, so that the movable mould plate 21, the cushion blocks 23 and the movable mould base plate 22 are fixed. After the mold is closed, the bottom surface of the stationary platen 12 contacts the top surface of the movable platen 21.

Referring to fig. 3 and 4, a first alignment groove 121 is formed in one side of the fixed die plate 12 close to the movable die plate 21, a second alignment groove 211 is formed in one side of the movable die plate 21 close to the fixed die plate 12, and the first alignment groove 121 is communicated with the second alignment groove 211. Referring to fig. 2, the first row bit assembly 31 includes two first sliders 311. After the die is closed, the sides of the two first sliding blocks 311 which are close to each other are contacted with each other; the two first sliding blocks 311 are both connected with the movable mold plate 21 in a sliding manner, and when the mold is opened, the two first sliding blocks 311 move in the direction away from each other.

Referring to fig. 2 and 4, four first oblique guide posts 123 are arranged on the fixed die plate 12, a connecting post 124 is fixed at the top end of each first oblique guide post 123, and the diameter of each connecting post 124 is larger than that of each first oblique guide post 123. One end of the fixed die plate 12 close to the fixed die base plate 11 is provided with a first jack 125, the fixed die plate 12 is provided with a second jack 126, the second jack 126 is positioned below the first jack 125 and communicated with the first jack 125, and the axes of the first jack 125 and the second jack 126 are superposed. When the first inclined guide post 123 is installed, the first inclined guide post 123 is inserted into the first insertion hole 125, the first inclined guide post 123 penetrates through the second insertion hole 126, the connection post 124 is located in the first insertion hole 125, and then the fixed die plate 12 and the fixed die plate 11 are fixed through bolts, so that the fixed die plate 11 abuts against the top end of the connection post 124.

Each first slider 311 is provided with two first guide holes 3111, and one end of the first inclined guide post 123 far away from the fixed die plate 12 is located in the first guide hole 3111. When the movable die plate 21 moves in a direction away from the fixed die plate 12, the two first sliders 311 move in a direction away from each other by the first oblique guide posts 123.

Referring to fig. 5, the first pressing blocks 213 are disposed on both sides of the first sliding block 311, the movable die plate 21 is provided with a first mounting groove 214 for accommodating the first pressing block 213, and the first pressing block 213 and the movable die plate 21 are fixed by bolts. The first pressing block 213 protrudes out of the first mounting groove 214, the first guide block 3112 is fixed on both sides of the first sliding block 311, and the first guide block 3112 is located between the bottom wall of the first pressing block 213 and the groove wall of the second slide groove 211. When the first slider 311 moves on the movable die plate 21, the first guide block 3112 moves between the first presser block 213 and the groove wall of the second travel groove 211, increasing the stability of the first slider 311.

Referring to fig. 2, two stoppers 127 are disposed below the fixed die plate 12, the two stoppers 127 are symmetrically disposed about the center of the die, and the stoppers 127 are fixed to the fixed die plate 12 by bolts. The two stoppers 127 are respectively located on the sides of the two first sliding blocks 311 away from each other, a wear-resistant block 128 is fixed on the groove wall of the first displacement groove 121 through a bolt, and the wear-resistant block 128 is also fixed on the side of the stopper 127 close to the first sliding block 311.

During demolding, the outer wall of the first slider 311 rubs against the groove wall of the first tracking groove 121, and the wear-resistant block 128 can increase the wear resistance of the groove wall of the first tracking groove 121. When the mold is closed, the stopper 127 can tightly abut against the first slide blocks 311, so that the two first slide blocks 311 are more stable.

Referring to fig. 3 and 4, the first slide assembly 31 further includes two second sliders 312, the two second sliders 312 are respectively located at two ends of the first slider 311, a third position slot 122 is formed at one side of the fixed die plate 12 close to the movable die plate 21, a fourth position slot 212 is formed at one side of the movable die plate 21 close to the fixed die plate 12, the third position slot 122 is communicated with the fourth position slot 212, and the second sliders 312 are located in the third position slot 122 and the fourth position slot 212. The two sides of the fourth positioning groove 212 of the movable die plate 21 are provided with second mounting grooves 215, second press blocks 216 are fixed in the second mounting grooves 215, the second press blocks 216 protrude out of the second mounting grooves 215, second guide blocks 217 are fixed at two ends of the second sliding block 312, and the second guide blocks 217 are located between the second press blocks 216 and the bottom walls of the second mounting grooves 215.

And second inclined guide posts 129 are respectively arranged above the two second sliding blocks 312, and the second inclined guide posts 129 are connected with the fixed die plate 12. The second angle guide post 129 is connected to the fixed die plate 12 in the same manner as the first angle guide post 123 is connected to the fixed die plate 12. The two second sliding blocks 312 are both provided with second guide holes 3121. After the die is closed, one end of the second inclined guide post 129 far away from the fixed die plate 12 penetrates through the second guide hole 3121. The movable die plate 21 has a receiving hole 218 formed at a position opposite to the second slider 312, and after the die assembly, the second tilt guide post 129 is inserted into the receiving hole 218 through the second guide hole 3121.

When the movable die plate 21 moves in a direction away from the fixed die plate 12, the second angle guide post 129 is gradually separated from the second slider 312, and the two second sliders 312 move in a direction away from each other by the second angle guide post 129. The row position insert pins 3122 are fixed to the sides of the two second sliders 312 close to each other, and semicircular connecting holes 3113 are formed in the sides of the two first sliders 311 close to each other. After the die is closed, the two semicircular connecting holes 3113 form a circular hole, the row insert pins 3122 are located in the circular hole 3113, and one end of the row insert pins 3122 far away from the second slide block 312 is located in the product 8.

Referring to fig. 2 and 3, the second slide assembly 32 includes two third slide blocks 321 symmetrically disposed, the third slide blocks 321 are located below the first slide blocks 311, and the two third slide blocks 321 are slidably connected to the movable platen 21 respectively. The movable mold plate 21 is provided with a fifth slide groove 219, the fifth slide groove 219 is located below the second slide groove 211, and the third slide block 321 is located in the fifth slide groove 219. Referring to fig. 5 and 6, third installation grooves 2191 are formed in both sides of a fifth travel position groove 219 of the movable die plate 21, third press blocks 2192 are fixed in the third installation grooves 2191, the third press blocks 2192 protrude out of the third installation grooves 2191, third guide blocks 3211 are fixed at both ends of the third sliding block 321, and the third guide blocks 3211 are located between the third press blocks 2192 and the bottom wall of the fifth travel position groove 219.

After the mold is closed, the two third sliders 321 contact each other. The oil cylinders 322 are respectively arranged on the sides of the two third sliding blocks 321 far away from each other, the mounting plate 323 is fixed on the side wall of the movable template 21, and the oil cylinders 322 are fixed on the mounting plate 323. A piston rod of the oil cylinder 322 is fixed to the third sliding block 321, and the oil cylinder 322 can drive the third sliding block 321 to slide in the fifth travel slot 219.

Referring to fig. 3 and 7, a pouring gate 4 is opened on one side of the fixed mold base plate 11 away from the fixed mold plate 12, a main flow channel 41 is arranged below the pouring gate 4, and the main flow channel 41 is composed of semicircular holes opened by two first sliding blocks 311. The two sides of the main channel 41 are provided with the sub-channels 42, the sub-channels 42 are also formed by semicircular holes formed in the two first sliding blocks 311, a cavity is arranged in the mold, the two first sliding blocks 311 and the two second sliding blocks 312 form two cavities, the cavity is communicated with the sub-channels 42, and the mold can produce 7 products in two rows at a time.

Referring to fig. 8, the product 8 produced by the injection mold is a water pipe joint in a washing machine, the water pipe joint comprises a first connecting pipe 81 and a second connecting pipe 82, an umbrella-shaped first buckling position 83 is arranged on the second connecting pipe 82, three second buckling positions 84 are arranged below the first buckling position 83, and the three second buckling positions 84 are uniformly arranged along the circumferential direction of the second connecting pipe 81.

Referring to fig. 1 and 2, a push plate 5 is arranged between the two cushion blocks 23, an ejector plate 51 is arranged above the push plate 5, and the ejector plate 51 is fixed with the push plate 5. The movable mold base plate 22 is fixed with a support pillar 52, the support pillar 52 and the movable mold base plate 22 are fixed through bolts, and one side of the support pillar 52 far away from the movable mold base plate 22 is in contact with one side of the movable mold plate 21 close to the movable mold base plate 22.

Referring to fig. 3 and 7, an inner ejector pin 221 is fixed to the movable mold base plate 22, a thread cylinder 53 is fixed to the ejector plate 51, the inner thread cylinder pin 221 is fitted to the thread cylinder 53, and the thread cylinder 53 is fitted to the inner thread cylinder pin 221. The bobbin 53 is positioned below the molded product 8, and the molded product 8 is fitted over the tip of the needle 221 in the bobbin. One end of the line position insert needle 3122 near the inner needle 221 of the silk tube is contacted with the inner needle 221 of the silk tube. An ejector pin 511 is fixed at the middle position of the ejector plate 51, the ejector pin 511 upwards penetrates through the movable mould plate 21, and the top end of the ejector pin 511 is positioned at the bottom end of the intersection position of the main flow passage 41 and the sub flow passage 42.

The movable mold base plate 22 is provided with a through hole 222, a connecting block 223 is arranged in the through hole 222, the connecting block 223 and the push plate 5 are fixed through bolts, and one side of the movable mold base plate 22, which is far away from the movable mold plate 21, is connected with an ejector rod (not shown in the figure).

After the mold is closed, the melted plastic is injected into the sprue gate 4 at high pressure, the plastic enters the cavity through the main runner 41 and the sub-runner 42, after the plastic is molded, the movable mold plate 21 moves downwards, the two first slide blocks 311 move towards the direction away from each other, and the two second slide blocks 312 move towards the direction away from each other. Then, the oil cylinder 322 drives the third sliding block 321 to move, so that the third sliding block 321 is separated from the product 8. After the third sliding block 321 is pulled out below the product 8, in the process that the movable mold base plate 22 continues to move downwards, the ejector rod abuts against the push plate 5 and the ejector plate 51, the ejector plate 51 drives the screw cylinder 53 to move in the direction away from the movable mold base plate 22, the ejector plate 51 also drives the ejector pin 511 to move, the screw cylinder 53 pulls the product 8 out of the needle 221 in the screw cylinder, the ejector pin 511 ejects the plastic formed in the main flow passage 41 and the branch flow passage 42, and the product 8 and the plastic in the main flow passage 41 and the branch flow passage 42 fall off together.

Referring to fig. 9, a locking assembly 6 is disposed between the fixed die plate 12 and the movable die plate 21, the locking assembly 6 includes a locking plate 61, a first bolt 62 and a second bolt 63, the first bolt 62 penetrates through one end of the locking plate 61 and is inserted into the fixed die plate 12, the locking plate 61 can rotate around the first bolt 62, and the first bolt 62 is in threaded connection with the fixed die plate 12; the second bolt 63 is in threaded connection with the movable mold plate 21, the locking plate 61 is provided with a locking groove 611, and the second bolt 63 can be clamped in the locking groove 611 by rotating the locking plate 61. When the mold is removed, the locking groove 611 is separated from the second bolt 63, and then the movable mold plate 21 moves away from the fixed mold plate 12.

The fixed die plate 12 and the fixed die base plate 11 are provided with a fixing assembly 7 on the side wall, the fixing assembly 7 comprises an installation block 71, two locking bolts 72 are arranged on the installation block 71, one of the locking bolts 72 penetrates through the installation block 71 and is in threaded connection with the fixed die base plate 11, and the other locking bolt 72 penetrates through the installation block 71 and is in threaded connection with the fixed die plate 12. The mounting blocks 71 and the lock bolts 72 further increase the coupling strength of the stationary die plate 12 and the stationary die base plate 11.

The implementation principle of the injection mold for secondary slide demolding in the embodiment of the application is as follows: when the mold is opened, the movable mold base plate 22 is driven by an external force to move in a direction away from the movable mold plate 21, while the movable mold plate 21 moves, the two first sliders 311 move in a direction away from each other, the two second sliders 312 move in a direction away from each other, then the two third sliders 321 move in a direction away from each other under the driving of the respective oil cylinders 322, the two first sliders 311 are separated from two sides above the first buckling position 83 of the product 8, and then the third sliders 321 are separated from two sides below the first buckling position 83 of the product 8.

In the process that the movable die plate 21 moves away from the fixed die plate 12, the ejector rod applies force to the ejector plate 5 under the action of external force, the ejector plate 5 drives the ejector plate 51 to move towards the direction away from the movable die base plate 22, the ejector plate 51 drives the inner wire tube needle 221 and the ejector 511 to move towards the direction away from the movable die base plate 22, and the wire tube 53 applies upward force to the product 8, so that the product 8 is separated from the top end of the inner wire tube needle 221. After the product 8 falls off, the two oil cylinders 322 drive the respective third sliding blocks 321 to move towards the direction of approaching each other, the movable die base plate 22 moves towards the direction of approaching the fixed die plate 12 under the action of the external force, then the two second sliding blocks 312 move towards the direction of approaching each other under the action of the second inclined guide posts 129, and the two first sliding blocks 311 move towards the direction of approaching each other under the action of the first inclined guide posts 123.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an injection mold of secondary slide drawing of patterns, includes fixed die plate (12) and movable mould board (21), and one side that fixed die plate (12) are close to movable mould board (21) contacts with movable mould board (21), its characterized in that: a first slide assembly (31) is arranged between the fixed template (12) and the movable template (21), a second slide assembly (32) is arranged below the first slide assembly (31), and when the mold is opened, the first slide assembly (31) is opened firstly, and the second slide assembly (32) is opened later;

the first slide block assembly (31) comprises two first slide blocks (311) which are symmetrically arranged, the first slide block assembly (31) further comprises two second slide blocks (312) which are symmetrically arranged, and the two first slide blocks (311) are positioned between the two second slide blocks (312); row position insert needles (3122) are fixed on the sides, close to each other, of the two second sliding blocks (312), semicircular connecting holes (3113) are formed in the sides, close to each other, of the two first sliding blocks (311), after die assembly is carried out, the two semicircular connecting holes (3113) form a complete hole, and the row position insert needles (3122) are located in the hole;

the second slide block assembly (32) comprises two third slide blocks (321) which are symmetrically arranged, the third slide blocks (321) are located below the first slide blocks (311), when the mold is opened, the two first slide blocks (311) move towards the direction away from each other, the two second slide blocks (312) move towards the direction away from each other, and then the two third slide blocks (321) move towards the direction away from each other.

2. The injection mold of claim 1, wherein: a first line location groove (121) is formed in one side, close to the movable template (21), of the fixed template (12), a second line location groove (211) is formed in one side, close to the fixed template (12), of the movable template (21), and the two first sliding blocks (311) are respectively located in the first line location groove (121) and the second line location groove (211); the fixed die plate (12) is connected with four first inclined guide pillars (123), each first sliding block (311) is provided with two first guide holes (3111), and one end, far away from the fixed die plate (12), of each first inclined guide pillar (123) is inserted into the corresponding first guide hole (3111);

third line position grooves (122) are respectively arranged on two sides of a first line position groove (121) of the fixed die plate (12), fourth line position grooves (212) are respectively arranged on two sides of a second line position groove (211) of the movable die plate (21), a second sliding block (312) is positioned in the third line position groove (122) and the fourth line position grooves (212), a second inclined guide post (129) is connected to the fixed die plate (12), and a second guide hole (3121) for the insertion of the second inclined guide post (129) is formed in the second sliding block (312);

a fifth slide groove (219) is arranged below the second slide groove (211) of the movable template (21), the two third slide blocks (321) are positioned in the fifth slide groove (219), oil cylinders (322) are arranged on the sides, far away from each other, of the two third slide blocks (321), the oil cylinders (322) are fixed on the side wall of the fixed template (12), and piston rods of the oil cylinders (322) are fixed with the third slide blocks (321).

3. The injection mold of claim 2, wherein: two symmetrically-arranged stop blocks (127) are fixed on one side, close to the movable die plate (21), of the fixed die plate (12), the two stop blocks (127) are respectively located in the two second slide grooves (211), and the two stop blocks (127) respectively abut against the side walls of the two first slide blocks (311).

4. The injection mold of claim 3, wherein: and a wear-resistant block (128) is fixed on one side of the stop block (127) close to the first sliding block (311), the wear-resistant block (128) is also fixed on the groove wall of the first displacement groove (121), and after the mold is closed, the wear-resistant block (128) is in contact with the side wall of the first sliding block (311).

5. The injection mold of claim 2, wherein: the two ends of the first sliding block (311) are provided with first pressing blocks (213), one side, close to the fixed die plate (12), of the movable die plate (21) is provided with a first installation groove (214), the first installation groove (214) is communicated with the second line position groove (211), the first pressing blocks (213) are located in the first installation groove (214), the first pressing blocks (213) protrude from the first installation groove (214), the bottom of the first pressing blocks (213) is higher than the bottom wall of the second line position groove (211), the two ends of the first sliding block (311) are fixed with first guide blocks (3112), and the first guide blocks (3112) are located between the groove walls of the first pressing blocks (213) and the second line position groove (211).

6. The injection mold of claim 1, wherein: one side that fixed die plate (12) were kept away from in movable mould board (21) is provided with movable mould bedplate (22), is fixed with cushion (23) that two symmetries set up between movable mould board (21) and movable mould bedplate (22), is provided with push pedal (5) between two cushion (23), and push pedal (5) are kept away from one side of movable mould bedplate (22) is fixed with thimble board (51), is fixed with silk tube (53) on thimble board (51), is fixed with silk tube inner needle (221) on movable mould bedplate (22), and silk tube (53) cover is on silk tube inner needle (221).

7. The injection mold of claim 1, wherein: be provided with first bolt (62) on the fixed die plate (12) lateral wall, be provided with locking plate (61) on the lateral wall of fixed die plate (12), first bolt (62) run through the one end of locking plate (61) and with fixed die plate (12) threaded connection, be provided with second bolt (63) that are located under first bolt (62) on movable mould board (21), locking groove (611) with second bolt (63) joint is seted up to the one end that first bolt (62) were kept away from in locking plate (61).

8. The injection mold of claim 1, wherein: one side of the fixed die plate (12) far away from the movable die plate (21) is provided with a fixed die base plate (11), the fixed die plate (12) and the fixed die base plate (11) are fixed through bolts, a fixed component (7) is arranged on the side walls of the fixed die plate (12) and the fixed die base plate (11), the fixed component (7) comprises an installation block (71), two locking bolts (72) are arranged on the installation block (71), one of the locking bolts (72) penetrates through the installation block (71) to be in threaded connection with the fixed die base plate (11), and the other locking bolt (72) penetrates through the installation block (71) to be in threaded connection with the fixed die plate (12).

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