CN219213921U

CN219213921U - Core-pulling feeding square bolt injection mold

Info

Publication number: CN219213921U
Application number: CN202223451117.0U
Authority: CN
Inventors: 李云进
Original assignee: Jinjiang Zhongquan Mould Trading Co ltd
Current assignee: Jinjiang Zhongquan Mould Trading Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-20
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to a core-pulling feeding square bolt injection mold which comprises a mold base, a lower mold arranged on the mold base, an upper mold arranged corresponding to the lower mold, a material runner arranged on the lower mold, a square lower cavity for forming squares and a bolt lower cavity arranged on the lower mold, a square upper cavity and a bolt upper cavity arranged on the upper mold, and a first core pulling and a second core pulling and driving mechanism arranged corresponding to the square lower cavity. The utility model can improve the product quality.

Description

Core-pulling feeding square bolt injection mold

Technical Field

The utility model relates to a core-pulling feeding square bolt injection mold.

Background

The square and the bolt are often matched and used in the zipper, the zipper generally comprises a first chain belt, a second chain belt and a pull head arranged on the first chain belt or the second chain belt, which are matched with each other, the square is arranged on the first chain belt, the bolt is arranged on the second chain belt, the bolt is inserted into the square, the positioning of the first chain belt and the second chain belt can be realized, and then the pull head is pulled again, so that the engagement of the first chain belt and the second chain belt is realized. For blocks and pins of the plastic type, injection molding is usually performed by means of a mold. For example, in the grant publication CN209365199U, the utility model discloses an injection molding die for upper stop of zipper block, which comprises a die holder, an upper die and a lower die which are arranged on the die holder and are arranged oppositely, wherein the upper die comprises a material injection hole for injecting raw materials, a runner for flowing raw materials, a first cavity group and a second cavity group for forming the upper stop and the block respectively and two accommodating spaces for accommodating a zipper strip are formed when the upper die and the lower die are clamped, the first cavity group and the second cavity group are overlapped with the two accommodating spaces in the clamping direction, the first cavity group comprises a first cavity and a second cavity which are arranged oppositely at intervals, and the first cavity and the second cavity are overlapped with the two accommodating spaces in the clamping direction respectively.

In the above patent, the third cavity is used for forming a square cavity on the zipper tape, the fourth cavity is used for forming a plug pin cavity, the third cavity is of a hollow structure, when the mold is closed, the first loose core and the second loose core are required to be matched for forming, and the feed liquid flows into the third cavity from a position between the first loose core and the second loose core through the runner. The first core-pulling device and the second core-pulling device need to be accurately positioned in the third cavity, and when the positions of the first core-pulling device and the second core-pulling device are shifted, the quality of the formed square block is affected, and even the square block becomes a defective product. The existing injection mold is not perfect in design, and when the core pulling position is abnormal, the quality of the formed square is sometimes difficult to detect. In addition, the driving mechanism adopts an air cylinder, and when the pressure of the feed liquid is large or the air pressure is unstable, the first core pulling and the second core pulling can be retracted, so that the injection molding quality is influenced.

In view of this, the present inventors have conducted intensive studies on the above problems, and have produced the present utility model.

Disclosure of Invention

The utility model aims to provide a core-pulling feeding square plug pin injection mold capable of improving product quality.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a feeding square bolt injection mold, including the die holder, the lower mould of setting on the die holder and correspond the last mould that the lower mould set up, be equipped with the material runner on the lower mould, it is equipped with the feed inlet to correspond the material runner on the upper mould, be equipped with square die cavity and bolt lower die cavity under being used for shaping square die on the lower mould, correspond square die cavity and be equipped with square die cavity and bolt upper die cavity on the upper mould, still include the first loose core and the second loose core that correspond square die cavity setting and be used for driving first loose core and the second loose core business turn over die cavity down, first loose core includes first basal portion and can stretch into or stretch out the first core of square die cavity, the second loose core includes second basal portion and can stretch into or stretch out the second core of square die cavity down, first core, the second core, square die cavity is gone up and square die cavity is enclosed to become with the shaping cavity that waits to take shape matching down, be equipped with first guide port on the second basal portion, be equipped with the second guide port on the second basal portion, the both ends of first guide port communicate respectively with material runner and shaping cavity and the first guide port, second loose core are equipped with the first positioning block and second positioning block and are equipped with the restriction groove on the first basal portion and second positioning groove are equipped with the first positioning groove and second positioning groove and are used for restricting the upper basal portion.

As a preferred mode of the present utility model, a first mounting groove and a second mounting groove in a vertical direction are provided on the upper die, the first positioning block is provided in the first mounting groove so as to be movable up and down by a first spring, and the second positioning block is provided in the second mounting groove so as to be movable up and down by a second spring.

As a preferable mode of the utility model, the first core pulling device and the second core pulling device are respectively arranged at two sides of the square lower cavity, the driving mechanism is a double-rod cylinder, the first core pulling device is connected to one piston rod of the double-rod cylinder through a first connecting rod, and the second core pulling device is connected to the other piston rod of the double-rod cylinder through a second connecting rod.

As a preferable mode of the utility model, the upper die is provided with a guide post, and the lower die is provided with a guide hole corresponding to the guide post.

In a preferred embodiment of the present utility model, the lower die is provided with a first guide groove for guiding the fastener element of the slide fastener, and the square lower cavity is provided on an extending path of the first guide groove.

In a preferred mode of the utility model, the lower die is further provided with a second guide groove for guiding the zipper teeth of the zipper, and the lower plug pin cavity is arranged on the extending path of the second guide groove.

As a preferable mode of the utility model, the lower die is provided with the adjusting groove corresponding to the chain belt of the zipper, the upper die is provided with the pressing block for pressing the chain belt of the zipper corresponding to the adjusting groove, and the pressing block is matched with the adjusting groove.

As a preferable mode of the utility model, the lower die is provided with the correction block, the correction block comprises a mounting part along the horizontal direction and an adjusting part along the vertical direction, the adjusting part is arranged in the second guide groove, the lower die is provided with the sliding groove, the mounting part can be arranged in the sliding groove in a mode of horizontally moving along the direction vertical to the second guide groove, the mounting part is provided with a strip-shaped hole, an adjusting screw for positioning the mounting part in the sliding groove is arranged in the strip-shaped hole, and the adjusting screw is in threaded connection with the lower die.

After the technical scheme of the utility model is adopted, through the matching of the first positioning block and the first positioning groove, the second positioning block and the second positioning groove, when the first core body and the second core body are inserted into the square lower cavity, the first core body and the second core body can be positioned more stably and are not easy to retract, the product forming quality is ensured, through arranging the first material guide opening on the first base part and arranging the second material guide opening on the second base part, the material liquid for injection molding enters the first material guide opening and the second material guide opening through the material flow channel and then enters the square upper cavity and the square lower cavity, and when the positions of the first core body and the second core body in the square upper cavity and the square lower cavity are not accurate enough, the material conveying is influenced, so that the product quality is influenced, an operator is reminded of timely adjusting the positions of the first core body and the second core body, and the product quality is ensured.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a top view of the lower mold of the present utility model (the first core and the second core extend into the square lower cavity);

FIG. 3 is a top view of the lower mold of the present utility model (first core and second core extending out of the square lower cavity);

fig. 4 is a bottom view of the upper die of the present utility model.

In the figure:

lower die 20 of die holder 10

Lower square cavity 21 and lower plug cavity 22

Guide hole 24 of material runner 23

Adjustment slot 25 first guide slot 26

Second guide groove 28 of slide groove 27

First positioning groove 291 and second positioning groove 292

Upper die 30 square upper cavity 31

Insert pin type cavity 32 feed port 33

First positioning block 34 second positioning block 35

Guide post 37 of press block 36

First core-pulling 40 first base 41

First core 42 first feed opening 43

Second core back 50 a second base 51

Second core 52 cylinder 60

First connecting rod 61 and second connecting rod 62

Adjustment part 81 of clamping mechanism 70

Mounting portion 82 bar-shaped hole 83

Locking screw 84

Detailed Description

In order to further explain the technical scheme of the present utility model, the following is described in detail with reference to examples.

Referring to fig. 1 to 4, a core-pulling feeding block plug pin injection mold comprises a mold base 10, a lower mold 20 arranged on the mold base 10 and an upper mold 30 arranged corresponding to the lower mold 20, wherein a material runner 23 is arranged on the lower mold 20, a feeding port 33 is arranged on the upper mold 30 corresponding to the material runner 23, and molten plastic enters the material runner 23 from the feeding port 33. The lower die 20 is provided with a square lower cavity 21 and a latch lower cavity 22 for forming squares, and the upper die 30 is provided with a square upper cavity 31 and a latch upper cavity 32 corresponding to the square lower cavity 21, which are constructed in the prior art and will not be described in detail herein. The utility model further comprises a first core-pulling device 40, a second core-pulling device 50 and a driving mechanism, wherein the first core-pulling device 40 and the second core-pulling device 50 are arranged corresponding to the square lower cavity 21, and the driving mechanism is used for driving the first core-pulling device 40 and the second core-pulling device 50 to enter and exit the square lower cavity 21, and the first core-pulling device 40 and the second core-pulling device 50 are arranged along the horizontal direction. The first core-pulling device 40 comprises a first base 41 and a first core 42 which can extend into or extend out of the square lower cavity 21, the second core-pulling device 50 comprises a second base 51 and a second core 52 which can extend into or extend out of the square lower cavity 21, the first core 42, the second core 52, the square upper cavity 31 and the square lower cavity 21 enclose a forming cavity matched with the shape of the square to be formed, and the first base 41 and the second base 51 are both positioned outside the square lower cavity 21 during injection molding. The first base 41 is provided with a first material guiding opening 43, the second base 51 is provided with a second material guiding opening 53, two ends of the first material guiding opening 43 are respectively communicated with the material flow channel 23 and the forming chamber, two ends of the second material guiding opening 53 are respectively communicated with the material flow channel 23 and the forming chamber, and molten plastic flowing out of the material flow channel 23 enters the forming chamber again through the first material guiding opening 43 and the second material guiding opening 53. In the utility model, the first positioning groove 291 for limiting the retraction of the first core-pulling unit 40 is arranged on the first base 41, the first positioning block 34 is arranged on the upper die 30 corresponding to the first positioning groove 291, the second positioning groove 292 for limiting the retraction of the second core-pulling unit 50 is arranged on the second base 51, the second positioning block 35 is arranged on the upper die 30 corresponding to the second positioning groove 292, and during injection molding, the first positioning block 34 is embedded into the first positioning groove 291 so as to limit the retraction of the first base 41 and the first core-pulling unit 40, and the second positioning block 35 is embedded into the second positioning groove 292 so as to limit the retraction of the second base 51 and the second core-pulling unit 50, so that the first core body 42 and the second core body 52 can be stably positioned during injection molding.

As a preferred mode of the present utility model, a first mounting groove (not shown) in a vertical direction in which the first positioning block 34 is provided to be movable up and down by a first spring (not shown) and a second mounting groove (not shown) in which the second positioning block 35 is provided to be movable up and down by a second spring (not shown) are provided to the upper die 30. The first positioning block 34 and the second positioning block 35 can be made to move upwards within a certain range by the first spring and the second spring, so that the first positioning block 34 is prevented from damaging the first positioning groove 291 and the second positioning block 35 is prevented from damaging the second positioning groove 292 when the mold is closed.

As a preferable mode of the present utility model, the first core-pulling device 40 and the second core-pulling device 50 are separately disposed at two sides of the square lower cavity 21, the driving mechanism is a double-rod cylinder 60, the first core-pulling device 40 is connected to a piston rod of the double-rod cylinder 60 through a first connecting rod 61, the second core-pulling device 50 is connected to another piston rod of the double-rod cylinder 60 through a second connecting rod 62, and the first connecting rod 61 and the second connecting rod 62 are disposed in parallel. In the double-rod air cylinder 60, the movement directions of the two piston rods are opposite, and the two piston rods are distributed along the horizontal direction.

As a preferred mode of the present utility model, the upper die 30 is provided with guide posts 37, and the lower die 20 is provided with guide holes 24 corresponding to the guide posts 37, and in an embodiment, the number of the guide posts 37 and the number of the guide holes 24 are 4.

In a preferred embodiment of the present utility model, the lower die 20 is provided with a first guide groove 26 for guiding the fastener element of the slide fastener, and the square lower cavity 21 is provided on an extending path of the first guide groove 26. In a preferred embodiment of the present utility model, the lower die 20 is further provided with a second guide groove 28 for guiding the fastener element of the slide fastener, and the insert pin lower cavity 22 is provided on an extending path of the second guide groove 28.

The first guide groove 26 and the second guide groove 28 are each provided along the conveying direction of the slide fastener.

As a preferable mode of the present utility model, the lower die 20 is provided with an adjusting groove 25 corresponding to the fastener tape of the slide fastener, the upper die 30 is provided with a pressing block 36 corresponding to the adjusting groove 25 for pressing the fastener tape of the slide fastener, and the pressing block 36 is arranged in cooperation with the adjusting groove 25. The two adjusting grooves 25 are arranged, one adjusting groove 25 is arranged corresponding to the square lower cavity 21, and the other adjusting groove 25 is arranged corresponding to the bolt lower cavity 22, so that when the pressing block 36 is pressed against the chain belt of the zipper, the inclination angle of the chain belt of the zipper can be adjusted, and the square and the bolt can be more accurately injection molded at the edge of the chain belt. Preferably, the press block 36 is provided such that the position thereof can be adjusted up and down, so that the degree of pressing of the press block 36 can be adjusted as needed.

As a preferred mode of the present utility model, the lower die 20 is provided with a calibration block, the calibration block includes a mounting portion 82 along a horizontal direction and an adjusting portion 81 along a vertical direction, the adjusting portion 81 is disposed in the second guide groove 28, the lower die 20 is provided with a chute 27, the mounting portion 82 is disposed in the chute 27 in a manner of horizontally moving along a direction perpendicular to the second guide groove 28, the mounting portion 82 is provided with a bar-shaped hole 83, a length direction of the bar-shaped hole 83 is perpendicular to an extending direction of the second guide groove 28, an adjusting screw 84 for positioning the mounting portion 82 in the chute 27 is disposed in the bar-shaped hole 83, and the adjusting screw 84 is screwed on the lower die 20. With this structure, by loosening the adjusting screw 84, the mounting portion 82 and the adjusting portion 81 can be moved, the adjusting portion 81 pushes the edge of the fastener tape of the slide fastener, adjustment of the edge of the fastener tape is achieved, and thereafter, the adjusting screw 84 is locked, thereby achieving positioning of the adjusting portion 84.

The present utility model also includes a clamping mechanism 70 for clamping the zipper, which is described in the prior art and will not be described in detail herein.

The product form of the present utility model is not limited to the embodiments described herein, and any suitable variations or modifications of the similar concept should be regarded as not departing from the scope of the utility model.

Claims

1. The utility model provides a feeding square bolt injection mold of loosing core, including the die holder, set up the lower mould on the die holder and correspond the last mould that the lower mould set up, be equipped with the material runner on the lower mould, correspond the material runner on the last material runner and be equipped with feed inlet, be equipped with the square lower die cavity and the bolt lower die cavity that are used for the shaping square on the lower mould, correspond square lower die cavity on last mould and be equipped with square upper die cavity and bolt upper die cavity, still including the first mechanism of loosing core and the second of loosing core that correspond square lower die cavity setting and be used for driving first mechanism of loosing core and second business turn over square lower die cavity, its characterized in that: the first core pulling device comprises a first base and a first core body which can extend into or extend out of a square lower cavity, the second core pulling device comprises a second base and a second core body which can extend into or extend out of the square lower cavity, the first core body, the second core body, the square upper cavity and the square lower cavity are enclosed to form a forming cavity matched with the shape of the square to be formed, the first base is provided with a first material guiding port, the second base is provided with a second material guiding port, two ends of the first material guiding port are respectively communicated with a material flow channel and the forming cavity, two ends of the second material guiding port are respectively communicated with the material flow channel and the forming cavity, a first positioning groove for limiting the first core pulling back is formed in the first base, a first positioning block is arranged on the upper die corresponding to the first positioning groove, a second positioning groove for limiting the second core pulling back is formed in the second base, and a second positioning block is arranged on the upper die corresponding to the second positioning groove.

2. The core-pulling feeding square plug pin injection mold according to claim 1, wherein: the upper die is provided with a first mounting groove and a second mounting groove along the vertical direction, the first positioning block is arranged in the first mounting groove in a vertically movable manner through a first spring, and the second positioning block is arranged in the second mounting groove in a vertically movable manner through a second spring.

3. A loose core feed block insert injection mold as set forth in claim 2, wherein: the first core pulling device comprises a driving mechanism, a second core pulling device, a first connecting rod, a second connecting rod, a driving mechanism and a second core pulling device, wherein the first core pulling device and the second core pulling device are respectively arranged on two sides of the square lower cavity, the driving mechanism is a double-rod cylinder, the first core pulling device is connected to one piston rod of the double-rod cylinder through the first connecting rod, and the second core pulling device is connected to the other piston rod of the double-rod cylinder through the second connecting rod.

4. A loose core feed block insert injection mold as set forth in claim 3, wherein: the upper die is provided with a guide post, and the lower die is provided with a guide hole corresponding to the guide post.

5. The core-pulling feeding square plug pin injection mold according to claim 4, wherein: the lower die is provided with a first guide groove for guiding the zipper teeth of the zipper, and the square lower die cavity is arranged on the extending path of the first guide groove.

6. The core-pulling feeding square plug pin injection mold according to claim 5, wherein: the lower die is also provided with a second guide groove for guiding the zipper teeth of the zipper, and the lower cavity of the bolt is arranged on the extending path of the second guide groove.

7. The core-pulling feeding square plug pin injection mold according to claim 6, wherein: the lower die is provided with adjusting grooves corresponding to the chain belts of the zippers, the upper die is provided with pressing blocks for pressing the chain belts of the zippers corresponding to the adjusting grooves, and the pressing blocks are matched with the adjusting grooves.

8. The core-pulling feeding square plug pin injection mold according to claim 7, wherein: the lower die is provided with a correction block, the correction block comprises a mounting part along the horizontal direction and an adjusting part along the vertical direction, the adjusting part is arranged in a second guide groove, the lower die is provided with a sliding groove, the mounting part can be arranged in the sliding groove in a mode of horizontally moving along the direction perpendicular to the second guide groove, the mounting part is provided with a strip-shaped hole, an adjusting screw used for positioning the mounting part in the sliding groove is arranged in the strip-shaped hole, and the adjusting screw is in threaded connection with the lower die.