CN216465971U

CN216465971U - Cutting injection mold in mold

Info

Publication number: CN216465971U
Application number: CN202122783551.8U
Authority: CN
Inventors: 彭永生; 潘连兴; 姜发明
Original assignee: Shenzhen Australis Electronic Technology Co Ltd
Current assignee: Shenzhen Australis Electronic Technology Co Ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-10
Anticipated expiration: 2031-11-12

Abstract

The utility model provides an in-mold cutting injection mold, which comprises a fixed mold and a movable mold, wherein the movable mold is connected with the fixed mold to form a mold cavity, and the in-mold cutting injection mold also comprises: the water gap plate is arranged on the movable die and provided with a water gap communicated with the die cavity; the ejection mechanism is movably arranged on the movable die; and one end of the cutting tool is connected with the ejection mechanism, the other end of the cutting tool is positioned at the connecting position of the water gap plate and the die cavity, and the cutting tool is driven by the ejection mechanism to cut the water gap material at the connecting position of the water gap plate and the die cavity. Through setting up cutting tool and through ejection mechanism's drive, realized the mouth of a river material of being connected with injection moulding product of automatic excision in the mould, eliminated the operation degree of difficulty of manual excision and promoted production efficiency, realized simultaneously that the mouth of a river material is amputated when injection moulding product is the cooling hardening not completely, eliminated the rupture vestige that appears on the injection moulding product.

Description

Cutting injection mold in mold

Technical Field

The utility model relates to the technical field of injection molding production, in particular to an in-mold cutting injection mold.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding process can be roughly divided into the following 6 stages: closing the mold, injecting glue, maintaining the pressure, cooling, opening the mold and taking out the product. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of forming products with complex shapes, and suitability for the molding processing fields of mass production, products with complex shapes and the like.

An injection mold is formed in an injection molding mode, a water gap is usually arranged on the injection mold, molten glue for injection molding is filled in a mold cavity through the water gap, a plastic product is formed in the mold cavity after pressure maintaining, and meanwhile, the molten glue remained at the water gap forms a water gap material which is adhered with the injection product; after moulding plastics, the mouth of a river material after the cooling is firm with the injection moulding product adhesion, needs operating personnel to carry out manual excision to the mouth of a river material of cooling, and whole process is wasted time and energy, often presents the rupture vestige easily on the injection moulding product after the manual excision in addition, and follow-up needs operating personnel to handle the rupture vestige again, and is very troublesome.

Therefore, how to provide an in-mold cutting injection mold which realizes in-mold automatic cutting and effectively eliminates the broken marks becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that in the prior art, the water feeding opening material of an injection product needs to be manually cut off, and the injection product is easy to have broken marks.

The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides an injection mold cuts in mould, includes cover half and movable mould, the movable mould with the cover half is connected and is formed the die cavity, cut injection mold still includes in the mould:

the water gap plate is arranged on the movable die and provided with a water gap communicated with the die cavity;

the ejection mechanism is movably arranged on the movable die;

and one end of the cutting tool is connected with the ejection mechanism, the other end of the cutting tool is positioned at the connecting position of the water gap plate and the die cavity, and the cutting tool is driven by the ejection mechanism to cut the water gap material at the connecting position of the water gap plate and the die cavity.

Further, the in-mold cutting injection mold further comprises:

the nozzle plate is arranged on the fixed die and provided with a glue injection hole communicated with the water gap;

the cutting tool comprises a first cutter and a second cutter which are symmetrically arranged; the first cutter and the second cutter both include:

a cutter body;

the cutter orientation column is connected to one end, away from the ejection mechanism, of the cutter body;

the nozzle plate is provided with a plurality of guide grooves along the width direction, the guide grooves are arranged along the height direction, and the cutter orientation column is inserted into the guide grooves.

Furthermore, one end, deviating from the cutter body, of the cutter directional column is provided with a directional column guiding cone, and the thickness of the directional column guiding cone is gradually reduced along the direction deviating from the cutter body.

Further, first cutter and second cutter all still include:

the cutting edge part, the cutting edge part with this body coupling of cutter, the cutting edge part is located the die cavity with the position department that meets at the mouth of a river, just the cutting edge part along length direction's both ends respectively with two the directional post connection of cutter.

Further, the blade portion includes:

a blade body;

the position avoiding groove is positioned on one side, facing the water gap, of the blade body, and is concave along the height direction;

the end face of the cutting edge body, which deviates from the water gap, is abutted against the die cavity, and the end face of the cutting edge body, which deviates from the cutter body, is arranged in parallel with the top surface of the fixed die and is connected with the groove wall of the avoiding groove.

Furthermore, the nozzle plate is provided with a clearance slope corresponding to the position of the blade part, the two ends of the clearance slope along the length direction are respectively connected with the two guide grooves, and the slope bottom of the clearance slope is lower than the top surface of the fixed die along the height direction.

Further, the in-mold cutting injection mold further comprises:

the first fine positioning pieces are arranged on the movable die;

and the plurality of second fine positioning pieces correspond to the plurality of first fine positioning pieces and are arranged on the fixed die in a matching way.

Further, the ejection mechanism includes:

the top plate is externally connected with an ejector rod of the injection molding machine;

one ends of the plurality of reset guide rods are connected with the top plate, and the other ends of the plurality of reset guide rods are connected with the movable die in a sliding manner;

the reset springs are sleeved on the reset guide rods, one ends of the reset springs are connected with the top plate, and the other ends of the reset springs are connected with the movable die;

and one end face, close to the fixed die, of the top plate is connected with the cutting tool.

Further, the ejection mechanism further comprises:

the ejector pin, the one end of ejector pin with the roof is connected, the other end of ejector pin is just right the mouth of a river sets up, and runs through in proper order the movable mould with the mouth of a river board.

Further, the ejection mechanism further comprises:

the cutter fixing plate is arranged on one end face, close to the fixed die, of the top plate, and a plurality of cutter fixing holes with steps are formed in the cutter fixing plate;

the first cutter and the second cutter all still include:

the cutter comprises a cutter body, a top plate, a hook part and a connecting part, wherein the hook part is connected to one end, close to the top plate, of the cutter body, the cutter body is arranged in the cutter fixing hole, and the hook part is located on a step of the cutter fixing hole.

The utility model provides an in-mold cutting injection mold, which comprises a fixed mold and a movable mold, wherein the movable mold is connected with the fixed mold to form a mold cavity, and the in-mold cutting injection mold further comprises: the water gap plate is arranged on the movable die and provided with a water gap communicated with the die cavity; the ejection mechanism is movably arranged on the movable die; and one end of the cutting tool is connected with the ejection mechanism, the other end of the cutting tool is positioned at the connecting position of the water gap plate and the die cavity, and the cutting tool is driven by the ejection mechanism to cut the water gap material at the connecting position of the water gap plate and the die cavity. The water gap plate is arranged, so that the water gap, the cutting tool and the die cavity form a pouring channel, and guarantee is provided for an injection mold to form an injection product through injection molding; the ejection mechanism is movably arranged on the movable die, so that the ejection mechanism can move after the movable die and the fixed die are assembled, and the cutting tool is driven to perform cutting action, so that guarantee is provided for cutting the nozzle material in the die; set up the cutting tool through the department of meeting position at mouth of a river board and die cavity for the cutting tool realizes the mouth of a river material that automatic excision and injection moulding product are connected in the mould under ejection mechanism's drive, the effectual operation degree of difficulty that has eliminated artifical excision mouth of a river material has just promoted production efficiency, make simultaneously the cutting tool can amputate mouth of a river material when injection moulding product is not the complete cooling and hardening after the suppression, and then the effectual injection moulding product who has eliminated excision mouth of a river material presents the rupture vestige, the effectual follow-up processing degree of difficulty that has reduced.

Drawings

FIG. 1 is a schematic perspective view of an in-mold cutting injection mold provided in the present invention;

FIG. 2 is a schematic view of a partial three-dimensional structure of an in-mold cutting injection mold provided in the present invention;

FIG. 3 is a schematic view of another partial perspective structure of the in-mold cutting injection mold provided in the present invention;

FIG. 4 is a schematic diagram of a three-dimensional exploded structure of an in-mold cutting injection mold provided in the present invention;

FIG. 5 is a schematic perspective view of a first cutter, a second cutter, a cutter fixing plate, a nozzle plate and a nozzle plate of the in-mold cutting injection mold provided in the present invention;

FIG. 6 is a schematic, partial cross-sectional view of an in-mold cut-out injection mold provided in the present invention;

FIG. 7 is a schematic illustration in cross-section of another embodiment of an in-mold cut injection mold provided in the present invention;

FIG. 8 is a schematic flow chart of a method of using an in-mold cutting injection mold provided in the present invention;

description of reference numerals:

10. cutting an injection mold in the mold; 11. moving the mold; 12. fixing a mold; 13. a water gap plate; 14. an ejection mechanism; 15. cutting tools; 16. a nozzle plate; 17. a crucian mouth piece; 18. a first precision positioning element; 19. a second precision positioning element; 19a, a cooling channel; 19b, a die cavity; 111. a movable mold fixing plate; 112. sizing block; 113. moving the template; 114. a movable mould core; 115. a guide post; 121. fixing a die fixing plate; 122. fixing a template; 123. fixing a mold core; 124. a guide sleeve; 131. a water gap; 132. a cutter slideway; 141. a top plate; 142. resetting the guide rod; 143. a return spring; 144. a sliding guide bar; 145. a sliding sleeve; 146. a cutter fixing plate; 147. a thimble; 1411. an upper top plate; 1412. a lower top plate; 1461. a cutter fixing hole; 151. a first cutter; 152. a second cutter; 153. a cutter body; 154. a cutter orientation post; 155. a knife edge part; 156. a hook portion; 1541. the directional column is guided to the cone; 1551. a blade body; 1552. a position avoiding groove; 161. injecting glue holes; 162. a guide groove; 163. a position avoiding slope; 171. and (4) a tapered hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding process can be roughly divided into the following 6 stages: closing the mold, injecting glue, maintaining the pressure, cooling, opening the mold and taking out the product. The injection molding method has the advantages of high production speed, high efficiency, automation in operation, multiple designs and varieties, simple and complex shapes, small and precise product size, easy replacement of products, capability of forming workpieces with complex shapes, and suitability for the fields of mass production, products with complex shapes and the like. An injection mold is formed in an injection molding mode, a water gap is usually arranged on the injection mold, molten glue for injection molding is filled in a mold cavity through the water gap, a plastic product is formed in the mold cavity after pressure maintaining, and meanwhile, the molten glue remained at the water gap forms a water gap material which is adhered with the injection product; after moulding plastics, the mouth of a river material after the cooling is firm with the injection moulding product adhesion, needs operating personnel to carry out manual excision to the mouth of a river material of cooling, and whole process is wasted time and energy, often presents the rupture vestige easily on the injection moulding product after the manual excision in addition, and follow-up needs operating personnel to handle the rupture vestige again, and is very troublesome.

Based on the problems that the material of a water gap on an injection product needs to be manually cut off and the injection product is easy to have broken marks in the prior art, the utility model provides the in-mold cutting injection mold, wherein the water gap, the cutting tool and the mold cavity form a pouring channel by arranging the water gap plate, so that the injection mold is guaranteed to form the injection product through injection molding; the ejection mechanism is movably arranged on the movable die, so that the ejection mechanism can move after the movable die and the fixed die are assembled, and the cutting tool is driven to perform cutting action, so that guarantee is provided for cutting the nozzle material in the die; the cutting tool is arranged at the connecting position of the nozzle plate and the die cavity, so that the cutting tool is driven by the ejection mechanism to automatically cut the nozzle material connected with the injection product in the die, the operation difficulty of manually cutting the nozzle material is effectively eliminated, the production efficiency is improved, meanwhile, the cutting tool can cut the nozzle material when the injection product is not completely cooled and hardened after the pressing is finished, the broken trace on the injection product with the nozzle material cut off is effectively eliminated, and the subsequent processing difficulty is effectively reduced; for details, reference will be made to the following embodiments.

Referring to fig. 1 to 3, a first embodiment of the present invention provides an in-mold cutting injection mold 10, which includes a fixed mold 12, a movable mold 11, a nozzle plate 13, an ejection mechanism 14, and a cutting tool 15; the movable die 11 is connected with the fixed die 12 to form a die cavity 19 b; the water gap plate 13 is arranged on the movable die 11, and a water gap 131 communicated with the die cavity 19b is arranged on the water gap plate 13; the ejection mechanism 14 is movably arranged on the movable die 11; one end of the cutting tool 15 is connected with the ejection mechanism 14, the other end of the cutting tool 15 is located at the connecting position of the nozzle plate 13 and the die cavity 19b, and the cutting tool 15 is driven by the ejection mechanism 14 to cut the nozzle material at the connecting position of the nozzle plate 13 and the die cavity 19 b.

It can be understood that the movable mold 11 and the fixed mold 12 in the injection mold are matched to form the mold cavity 19b, the number of the mold cavities 19b is not limited in the utility model, and the number of the mold cavities 19b can be set to be 1, 2 or 4 according to actual production requirements; the ejection mechanism 14 is movably arranged on the movable die 11, and the ejection mechanism 14 can move on the movable die 11; the ejection mechanism 14 is connected with a cutting tool 15, the cutting tool 15 is arranged at the joint of the nozzle plate 13 and the die cavity 19b, and the nozzle plate 13 is provided with a nozzle 131 communicated with the die cavity 19b, namely the cutting tool 15 is arranged at the joint of the nozzle 131 and the die cavity 19 b; the cutting tool 15 is driven by the ejection mechanism 14, and the cutting tool 15 performs cutting action at the connecting position of the water gap 131 and the die cavity 19 b; before the cutting tool 15 performs the cutting action, the water gap 131 is communicated with the die cavity 19 b; after the fixed die 12 and the movable die 11 are closed, the injection molding molten glue enters the die cavity 19b through the water gap 131 and the cutting tool 15 in sequence to fill the die cavity 19 b; after the injection molding and pressure maintaining are finished, an injection molding product is formed in the mold cavity 19b, a nozzle material is formed by the molten glue in the nozzle 131, and the injection molding product is connected with the nozzle material; when the mold is not opened, the cutting tool 15 is driven by the ejection mechanism 14 to cut the nozzle material, so that the nozzle material connected with the injection molding product is cut in the mold, and the nozzle material can be cut when the injection molding product is not completely cooled and hardened after the mold is pressed, so that the phenomenon that the cut injection molding product shows a breaking mark due to the influence of the hardness of the injection molding product is avoided; by arranging the water gap plate 13, the water gap 131, the cutting tool 15 and the die cavity 19b form a pouring channel for circulation of injection molding molten glue, so that guarantee is provided for injection molding of injection molding products in an injection mold; the ejection mechanism 14 is arranged and the ejection mechanism 14 is movably arranged on the movable die 11, so that the ejection mechanism 14 can move after the movable die 11 and the fixed die 12 are assembled, and then the cutting tool 15 is driven to perform cutting action, and guarantee is provided for cutting the nozzle material in the die; through set up cutting tool 15 in the department of meeting position at mouth of a river board 13 and die cavity 19b for cutting tool 15 realizes the mouth of a river material that automatic excision and injection moulding product are connected in the mould under ejection mechanism 14's drive, the effectual operation degree of difficulty that has eliminated artifical excision mouth of a river material has just promoted production efficiency, make cutting tool 15 can amputate mouth of a river material when the injection moulding product is not cooled off the sclerosis completely after the suppression simultaneously, and then the effectual injection moulding product who has eliminated excision mouth of a river material presents the rupture vestige, the effectual follow-up processing degree of difficulty that has reduced.

Referring to fig. 2 to 4, in some preferred embodiments, the movable mold 11 includes a movable mold fixing plate 111, a sizing block 112, a movable mold plate 113 and a movable mold core 114, which are sequentially disposed along a height direction, and the two sizing blocks 112 are disposed on a bottom surface of the movable mold fixing plate 111 along the height direction and are located at two ends of the movable mold fixing plate 111 along a length direction; the movable die plate 113 is arranged at one end of the sizing block 112, which is far away from the movable die fixing plate 111; the movable die core 114 is embedded on the bottom surface of the movable die plate 113; the fixed die 12 comprises a fixed die fixing plate 121, a fixed die plate 122 and a fixed die core 123 which are sequentially arranged along the height direction, the fixed die plate 122 is arranged on the top surface of the fixed die fixing plate 121 along the height direction, and the fixed die core 123 is embedded on the top surface of the fixed die plate 122; after the movable mold 11 and the fixed mold 12 are assembled, the movable mold core 114 and the fixed mold core 123 are connected to form a mold cavity 19 b; the water gap plate 13 is embedded in the movable die core 114, and an end surface of the water gap plate 13 departing from the fixed die core 123 is connected with the movable die plate 113; the ejection mechanism 14 is arranged between the movable mold fixing plate 111 and the movable mold plate 113, one end of the ejection mechanism 14 in the height direction abuts against the movable mold fixing plate 111, and the ejection mechanism 14 is connected with the movable mold fixing plate 111 and the movable mold plate 113 in a sliding manner, so that the ejection mechanism 14 can move on the movable mold 11, and a guarantee is provided for driving the cutting tool 15 to cut off the sprue material on the injection-molded product; one end of the cutting tool 15 is connected with the ejection mechanism 14, and the other end of the cutting tool 15 sequentially penetrates through the movable die plate 113, the movable die core 114 and the water gap plate 13 along the height direction; the moving die 11 further comprises a plurality of guide posts 115, and the fixed die 12 further comprises a plurality of guide sleeves 124 arranged corresponding to the guide posts 115; after the movable mold 11 and the fixed mold 12 are closed, the guide pillar 115 is connected with the guide sleeve 124 in a matching way; through setting up a plurality of guide pillars 115 and a plurality of guide pin bushing 124, promoted the compound die precision of movable mould 11 with the cover half 12, and then promoted injection mold's injection moulding product's yields.

With continuing reference to fig. 2 and 3, in some preferred embodiments, the stationary mold 12 and the movable mold 11 are provided with a plurality of cooling channels 19a, and in particular, the movable mold plate 113 and the stationary mold plate 122 are provided with a plurality of cooling channels 19 a; through setting up a plurality of cooling channel 19a for the coolant liquid is via a plurality of cooling channel 19a cools off injection mold realizes the cooling to injection moulding product and mouth of a river material behind the pressurize, does injection mold's injection moulding process provides effective guarantee, and accessible control is a plurality of simultaneously time and the speed etc. of letting in the coolant liquid among the cooling channel 19a can realize the control to injection mold's cooling rate, and then promote injection mold injection moulding process's nimble controllability.

With continuing reference to fig. 3 and 5, in another preferred embodiment, the in-mold cutting injection mold 10 further includes a nozzle plate 16, the nozzle plate 16 is disposed on the fixed mold 12, and the nozzle plate 16 is provided with a glue injection hole 161 communicating with the water gap 131; the cutting tool 15 comprises a first cutter 151 and a second cutter 152 which are symmetrically arranged; the first cutter 151 and the second cutter 152 each include a cutter body 153 and a cutter orientation column 154; the cutter orientation column 154 is connected to one end of the cutter body 153 away from the ejection mechanism 14; the two side surfaces of the nozzle plate 16 along the width direction are both provided with guide grooves 162, the guide grooves 162 are provided along the height direction, and the cutter orientation column 154 is inserted into the guide grooves 162.

It can be understood that the nozzle plate 16 is disposed on the fixed mold 12, the nozzle plate 16 is provided with a glue injection hole 161 communicated with the water gap 131, specifically, the nozzle plate 16 is embedded on the fixed mold 12, the nozzle plate 16 is disposed corresponding to the water gap plate 13, the nozzle plate 16 is provided with the glue injection hole 161 communicated with the water gap 131, the nozzle plate 16, the water gap plate 13 and the cutting tool 15 form a pouring system, and the injection melt glue is injected into the water gap 131 through the glue injection hole 161 and is injected into the mold cavity 19b through the cutting tool 15, thereby providing a guarantee for injection molding of the injection mold; the number of the die cavities 19b is two, the cutting tool 15 comprises a first cutter 151 and a second cutter 152, and the injection molding products and the nozzle materials in the two die cavities 19b can be separated at one time through the first cutter 151 and the second cutter 152, so that the production efficiency is effectively improved; the first cutter 151 and the second cutter 152 both include a cutter body 153 and a cutter orientation column 154, specifically, the cutter body 153 of the first cutter 151 and the cutter body 153 of the second cutter 152 are symmetrically arranged on two side surfaces of the water gap plate 13 along the width direction, the water gap plate 13 is provided with cutter slideways 132 for the cutter body 153 to slide, the two cutter slideways 132 are arranged on two side surfaces of the water gap plate 13 along the width direction, and the two cutter slideways 132 are arranged along the height direction; the cutter orientation column 154 of the first cutter 151 and the cutter orientation column 154 of the second cutter 152 are symmetrically arranged on two lateral surfaces of the nozzle plate 16 along the width direction, a guide groove 162 for the cutter orientation column 154 to slide is formed in the nozzle plate 16, the two guide grooves 162 are formed in two lateral surfaces of the water gap plate 13 along the width direction, and both the two guide grooves 162 are formed along the height direction; when the movable die 11 and the fixed die 12 are assembled, the cutter orientation column 154 is inserted in the guide groove 162; through the arrangement of the cutter orientation column 154 and the guide groove 162, the guide groove 162 limits the cutter orientation column 154, so that the accurate positioning of the first cutter 151 and the second cutter 152 for cutting off the feeding nozzle material of the injection molding product under the driving of the ejection mechanism 14 is ensured, and further, the effective guarantee is provided for eliminating the breaking mark of the cutting nozzle material on the injection molding product.

Referring to fig. 6, in some preferred embodiments, the in-mold cutting injection mold 10 further includes a crucian mouth piece 17 disposed in the glue injection hole 161, the crucian mouth piece 17 is provided with a tapered hole 171 communicated with the water gap 131, and a diameter of the tapered hole 171 gradually decreases along a direction away from the water gap plate 13; through setting up crucian mouth spare 17 and setting up bell mouth 171 for the melten gel of moulding plastics sprays to mouth of a river board 13 both sides through bell mouth 171, ensures that the melten gel of moulding plastics evenly flows to both sides die cavity 19b, is favorable to promoting injection mold moulds plastics the process penetrate gluey effect.

In some preferred embodiments, the cutting tool 15 further includes a third cutter and a fourth cutter which are symmetrically arranged, correspondingly, the number of the mold cavities 19b is four, the structures of the first cutter 151, the second cutter 152, the third cutter and the fourth cutter are the same, and by arranging the first cutter 151, the second cutter 152, the third cutter and the fourth cutter, the injection molding products and the nozzle materials in the four mold cavities 19b can be separated at one time, so that the production efficiency is effectively improved; the cutter body 153 of the third cutter and the cutter body 153 of the fourth cutter are symmetrically arranged on two side surfaces of the water gap plate 13 along the length direction, the water gap plate 13 is provided with cutter slideways 132 for the cutter body 153 to slide, and the two cutter slideways 132 are arranged on two side surfaces of the water gap plate 13 along the length direction and are arranged along the height direction; the cutter orientation column 154 of the third cutter and the cutter orientation column 154 of the fourth cutter are symmetrically arranged on two side surfaces of the nozzle plate 16 along the length direction, a guide groove 162 for the cutter orientation column 154 to slide is formed in the nozzle plate 16, the two guide grooves 162 are formed in two side surfaces of the water gap plate 13 along the length direction, and both the two guide grooves 162 are formed along the height direction; when the movable mold 11 and the fixed mold 12 are closed, the third cutter and the fourth cutter are inserted into the guide groove 162 through the cutter orientation column 154; the number of the cutters included in the cutting tool 15 can be set according to actual production requirements, the number of the cutting tools 15 corresponding to the die cavity 19b can be specifically set to be 1, 2 or 4, and the like, the number of the cutters is not limited in the utility model, and the number of the cutters is set to be 1 or more, which belongs to the protection scope of the utility model.

Continuing to refer to fig. 5, in other preferred embodiments, an end of the cutter orientation post 154 facing away from the cutter body 153 is provided with an orientation post guide cone 1541, and the thickness of the orientation post guide cone 1541 decreases in a direction facing away from the cutter body 153.

It is understood that the thickness of the directional column guiding cone 1541 gradually decreases in a direction away from the cutter body 153, and specifically, the thickness of the directional column guiding cone 1541 may be a width-wise thickness, a length-wise thickness, or a width-wise thickness and a length-wise thickness; by arranging the orientation post guide cone 1541, the cutter orientation post 154 is ensured to accurately enter the guide groove 162 when the movable mold 11 and the fixed mold 12 are closed, and the nozzle plate 16 is prevented from being damaged.

Referring to fig. 5 and 6, in another preferred embodiment, each of the first and

second cutters

151 and 152 further includes a blade portion 155, the blade portion 155 is connected to the cutter body 153, the blade portion 155 is located at a position where the mold cavity 19b is connected to the nozzle 131, and two ends of the blade portion 155 along the length direction are respectively connected to two cutter orientation columns 154.

It can be understood that the knife edge portion 155 is located at the connecting position of the mold cavity 19b and the gate 131, and two ends of the knife edge portion 155 along the length direction are respectively connected with the two cutter orientation columns 154, specifically, after the movable mold 11 and the fixed mold 12 are closed, the knife edge portion 155, the two cutter orientation columns 154 and the nozzle plate 16 enclose a channel for injecting the injection molding molten glue from the gate 131 into the mold cavity 19 b; after the pressure maintaining is finished, the first cutter 151 and the second cutter 152 cut the nozzle material through the blade part 155 under the driving of the ejection mechanism 14, so that the injection molding product and the nozzle material are separated in the mold without opening the mold; through setting up cutting edge portion 155 and being connected cutting edge portion 155's both ends and two directional posts 154 of cutter, provide the guarantee for realizing not the die sinking at intramode separation injection moulding product and mouth of a river material for two guide posts provide accurate location for cutting of cutting edge portion 155, and then the effectual accurate nature that has promoted cutting edge portion 155 excision mouth of a river material, and then the effectual rupture vestige that has avoided cutting to present on the injection moulding product.

Referring to fig. 6 and 7, in other preferred embodiments, the blade portion 155 includes a blade body 1551 and a clearance groove 1552; the position avoiding groove 1552 is positioned on one side, facing the water gap 131, of the blade body 1551, and the position avoiding groove 1552 is concave along the height direction; an end face of the blade body 1551, which is far away from the water gap 131, abuts against the die cavity 19b, and an end face of the blade body 1551, which is far away from the cutter body 153, is arranged in parallel with the top surface of the fixed die 12 and is connected with the wall of the avoiding groove 1552.

It can be understood that the blade body 1551 abuts against the mold cavity 19b, the avoiding groove 1552 is connected with the nozzle 131, the blade body 1551 cuts the nozzle material connected with the injection molded product under the driving of the ejection mechanism 14, and specifically, the blade body 1551 cuts the nozzle material on the injection molded product through the shearing action between one end surface of the blade body 1551, which is far away from the cutter body 153, and the top surface of the fixed mold 12; the width D of one end face, away from the cutter body 153, of the blade body 1551 can be set to be 0.20-0.50 mm; the end face, away from the cutter body 153, of the blade body 1551 is parallel to the top face of the fixed die 12, so that the shearing action of the blade body 1551 and the fixed die 12 is guaranteed, and effective guarantee is provided for the blade body 1551 to cut off a nozzle material on an injection molding product; the shearing action of the blade body 1551 on the nozzle material is realized by extruding the nozzle material to deform, the shearing force acts on the nozzle material to extrude the nozzle material to deform, and when the deformation exceeds the limit, the nozzle material is disconnected from a product; through setting up and keeping away position recess 1552, for cutting action of cutting edge body 1551 to mouth of a river material provides the deformation space, the effectual guarantee cutting action of cutting edge body 1551 to mouth of a river material provides effective guarantee for realizing not the die sinking cuts off mouth of a river material in the mould.

With continuing reference to fig. 5 and 7, in another preferred embodiment, the nozzle plate 16 is provided with a clearance slope 163 at a position corresponding to the blade portion 155, two ends of the clearance slope 163 along the length direction are respectively connected to the two guide slots 162, and a bottom of the clearance slope 163 is lower than a top surface of the fixed mold 12 along the height direction.

It can be understood that, keep away position slope 163 through setting up, just keep away the slope bottom of position slope 163 and be less than the top surface of cover half 12 along direction of height, for cutting edge body 1551 provides the space of feeding, the effectual guarantee cutting effect of cutting edge body 1551 to the mouth of a river material provides effective guarantee for realizing not the die sinking cuts off the mouth of a river material in the mould.

With continued reference to fig. 2 and 3, in other preferred embodiments, the in-mold cutting injection mold 10 further includes a plurality of first fine positioning elements 18 and a plurality of second fine positioning elements 19; a plurality of first precise positioning pieces 18 are arranged on the movable mold 11; the plurality of second precise positioning parts 19 are arranged on the fixed die 12 corresponding to the plurality of first precise positioning parts 18, and the plurality of second precise positioning parts 19 are arranged in a matching way with the plurality of first precise positioning parts 18.

It is understood that the first precise positioning element 18 can be provided in 2 or 4, etc.; the number of the second fine positioning pieces 19 is 2 or 4 corresponding to the number of the first fine positioning pieces 18; and a plurality of second precise positioning pieces 19, a plurality of second precise positioning pieces 19 are arranged in a matching way with a plurality of first precise positioning pieces 18, specifically, the sizes of the second precise positioning pieces 19 and the first precise positioning pieces 18 are matched, and after the movable die 11 and the fixed die 12 are assembled, the plurality of second precise positioning pieces 19 are connected with the plurality of first precise positioning pieces 18 in a matching way; through setting up a plurality of first smart locating piece 18 and a plurality of second smart locating piece 19, the effectual centering positioning accuracy who promotes movable mould 11 and cover half 12 compound die can make centering positioning accuracy be less than 0.005mm, and then the effectual quality of moulding plastics that promotes injection moulding product has promoted cutting tool 15's alignment accuracy simultaneously, and then the effectual rupture vestige that causes when having eliminated cutting tool 15 and cutting injection moulding product and supplying water the mouth material.

Specifically, a plurality of first precise positioning pieces 18 are provided with first positioning bulges or first positioning grooves, a plurality of second precise positioning pieces 19 are correspondingly provided with second positioning grooves or second positioning bulges, the first positioning bulge is matched with the first positioning groove, the first positioning groove is matched with the second positioning bulge, when the movable die 11 and the fixed die 12 are assembled, the first positioning bulge is connected with the first positioning groove in a matching way, the first positioning groove is matched and connected with the second positioning bulge, so that the centering and positioning accuracy of the matched die of the movable die 11 and the fixed die 12 is effectively improved, the centering and positioning accuracy can be smaller than 0.005mm, thereby effectively improving the injection molding quality of the injection molding product, simultaneously improving the alignment precision of the cutting tool 15, thereby effectively eliminating the breaking marks caused when the cutting tool 15 cuts the material at the water inlet of the injection molding product.

With reference to fig. 2 and fig. 3, in some preferred embodiments, a plurality of the first precise positioning elements 18 are embedded in the movable mold core 114, a plurality of the second precise positioning elements 19 are embedded in the fixed mold core 123 corresponding to the plurality of the first precise positioning elements 18, and the plurality of the first precise positioning elements 18 and the plurality of the second precise positioning elements 19 are arranged in a matching manner, so that the mold closing accuracy of the movable mold core 114 and the fixed mold core 123 is effectively improved, and the injection molding quality of the injection molded product in the mold cavity 19b is further ensured.

With continued reference to fig. 2 and 4, in other preferred embodiments, the ejection mechanism 14 includes a top plate 141, a plurality of return guide rods 142, and a plurality of return springs 143; the top plate 141 is externally connected with an ejector rod of the injection molding machine; one end of each of the plurality of reset guide rods 142 is connected to the top plate 141, and the other end of each of the plurality of reset guide rods 142 is slidably connected to the movable mold 11; the reset springs 143 are sleeved on the reset guide rods 142, one ends of the reset springs 143 are connected with the top plate 141, and the other ends of the reset springs 143 are connected with the movable mold 11; one end surface of the top plate 141 close to the fixed die 12 is connected with the cutting tool 15.

It can be understood that the ejection mechanism 14 drives the cutting tool 15 to cut off the nozzle material under the ejection action of the ejector rod of the injection molding machine, specifically, the ejector rod of the injection molding machine pushes the top plate 141, and the top plate 141 is slidably connected with the movable mold 11 through the connected reset guide rods 142, so that the top plate 141 moves on the movable mold 11, and further, the cutting tool 15 connected to the top plate 141 is driven to cut the nozzle material; when the ejector rod of the injection molding machine is not ejected, one end surface of the top plate 141 departing from the fixed die 12 abuts against the movable die 11; by arranging the top plate 141 and the plurality of reset guide rods 142, the stable movement of the top plate 141 is ensured under the guiding action of the plurality of reset guide rods 142, and effective guarantee is provided for the top plate 141 to drive the cutting tool 15 to cut off the nozzle material; through the reset springs 143 sleeved on the reset guide rods 142, the ejector rod of the injection molding machine is not ejected any more after the top plate 141 drives the cutting tool 15 to cut off the nozzle material, and the top plate 141 is pushed to recover through the elastic action of the reset springs 143, so that the top plate 141 drives the cutting tool 15 to return to the position before cutting, smooth proceeding of next cutting action is guaranteed, meanwhile, the cutting tool 15 is ensured not to block the circulation of molten rubber between the nozzle 131 and the mold cavity 19b, and effective guarantee is provided for next injection molding.

With continuing reference to fig. 2 and fig. 4, in some preferred embodiments, the top plate 141 is disposed between the movable mold fixing plate 111 and the movable mold plate 113, a top surface of the top plate 141 in the height direction abuts against the movable mold fixing plate 111, a bottom surface of the top plate 141 in the height direction is connected to one end of the cutting tool 15, and the other end of the cutting tool 15 is slidably connected to the movable mold plate 113 and the water gap plate 13; through setting up roof 141 and cutting tool 15, for injection mold does not realize that the mould cuts and provides effective guarantee in the mould for cutting tool 15 can amputate mouth of a river material when injection moulding product is not the complete cooling and hardening after the end of the holding pressure, and then the effectual rupture vestige that appears on the injection moulding product who amputates mouth of a river material that has eliminated, the effectual follow-up processing degree of difficulty that has reduced.

Referring to fig. 4, in some preferred embodiments, the movable mold fixing plate 111 and the movable mold plate 113 are slidably connected to the top plate 141 through a plurality of sliding guide rods 144, one end of each of the plurality of sliding guide rods 144 is connected to the movable mold fixing plate 111, the other end of each of the plurality of sliding guide rods 144 is connected to the movable mold plate 113, the ejection mechanism 14 is correspondingly provided with a plurality of sliding sleeves 145, the top plate 141 includes an upper top plate 1411 and a lower top plate 1412 which are sequentially connected, the plurality of sliding sleeves 145 are disposed at the connecting position of the upper top plate 1411 and the lower top plate 1412, and the sliding sleeves 145 are slidably connected to the sliding guide rods 144; through setting up a plurality of sliding guide 144 and a plurality of sliding sleeve 145, further promoted roof 141 drive cutting tool 15 cuts the stability of mouth of a river material, provides effective guarantee for the effectual rupture vestige that appears on the injection moulding product who has amputated mouth of a river material that has eliminated.

With continuing reference to fig. 5 and fig. 6, in another preferred embodiment, the ejection mechanism 14 further includes a cutter fixing plate 146, the cutter fixing plate 146 is disposed on an end surface of the top plate 141 close to the fixed mold 12, and a plurality of cutter fixing holes 1461 having steps are formed in the cutter fixing plate 146; each of the first cutter 151 and the second cutter 152 further includes a hook 156, the hook 156 is connected to one end of the cutter body 153 close to the top plate 141, the cutter body 153 is disposed in the cutter fixing hole 1461, and the hook 156 is located on a step of the cutter fixing hole 1461.

It can be understood that the hook portion 156 is connected with the cutter body 153 to form an L shape, and the cutter fixing hole 1461 is formed in the cutter fixing plate 146, and the hook portion 156 is formed in the first cutter 151 and the second cutter 152, so that the cutting cutter 15 can be conveniently mounted and replaced, and the use and maintenance convenience of the injection mold is improved.

Referring to fig. 6, in another preferred embodiment, the ejection mechanism 14 further includes an ejector pin 147, one end of the ejector pin 147 is connected to the top plate 141, and the other end of the ejector pin 147 is disposed opposite to the water gap 131 and sequentially penetrates through the movable mold 11 and the water gap plate 13.

It can be understood that the thimble 147 is disposed between the first cutter 151 and the second cutter, one end of the thimble 147 is connected to the top plate 141, and the other end of the thimble 147 is communicated with the water gap 131; specifically, when the ejection mechanism 14 is not ejected and the ejection mechanism 14 drives the cutting tool 15 to cut the nozzle material, the ejector pin 147 does not extend into the nozzle 131; only after the fixed die 12 and the movable die 11 are opened, the ejection mechanism 14 ejects again, and the ejector pin 147 is used for ejecting the sprue material from the sprue 131 after the fixed die 12 and the movable die 11 are opened; through setting up thimble 147, ensure the automation of mouth of a river material and take out after the die sinking, make ejection mechanism 14 has realized that the mould is automatic cuts mouth of a river material to and take out mouth of a river material automatically after the die sinking, effectual promotion injection mold's automation level, and then the effectual operation degree of difficulty of having eliminated artifical excision mouth of a river material has just promoted production efficiency.

Referring to fig. 8, a second embodiment of the present invention further provides a method for using the in-mold cutting injection mold 10, which includes the following steps:

s100, finishing injection molding pressure maintaining, cooling for a first preset time, then ejecting an ejector rod of an injection molding machine for the first time, and driving the cutting tool 15 to cut off the water gap material by the ejection mechanism 14 to obtain an injection molding product separated from the water gap material.

The method has the advantages that the sprue material is cut off in the mold when the injection mold is not opened through the first ejection of the ejector rod of the injection molding machine, so that the sprue material is cut off by the cutting tool 15 when the injection molding product is not completely cooled and hardened, the fracture marks on the injection molding product with the sprue material cut off are effectively eliminated, and the subsequent processing difficulty is effectively reduced; the injection molding machine is characterized in that the ejector rod of the injection molding machine is ejected for the first time when an injection molding product has certain hardness after the injection molding and pressure maintaining are finished, the injection mold is not opened at the moment, the injection molding product is also shaped but is not completely hardened, and the water gap material on the injection molding product is conveniently cut off; the first ejection time of the ejector rod of the injection molding machine is determined according to the cooling condition of injection molding molten gel, can be adjusted according to the actual production condition, and can be ejected for the first time after pressure maintaining if the injection molding product is shaped and has certain hardness after pressure maintaining is finished; if the injection molding product is shaped and has certain hardness after the pressure maintaining is finished and needs to be cooled for a first preset time, the first preset time can be ejected for the first time after the first preset time is cooled, wherein the first preset time refers to the time from the pressure maintaining is finished to the time when the injection molding molten adhesive is cooled and shaped in the mold cavity 19b and the water gap 131 and has certain hardness, the first preset time is determined according to the cooling condition of the injection molding molten adhesive, belongs to the cooling characteristic of the injection molding molten adhesive, and is not described in detail.

With reference to fig. 7, in some preferred embodiments, the cutting distance H of the cutting tool 15 is 0.10 to 0.15mm, and the cutting distance is a distance between an end surface of the blade body 1551 of the first cutter 151 and the second cutter 152, which is away from the cutter body 153, and the top surface of the fixed mold 12, at this time, the blade body 1551 and the fixed mold 12 complete sequential cutting actions, so as to cut off the nozzle material connected to the injection molded product; through setting up the feed distance, provide effective guarantee for cutting tool 15 realizes the excision of the mouth of a river material of connecting on the injection moulding product.

S200, continuing to cool the nozzle material and the injection molding product, opening the fixed die 12 and the movable die 11 after cooling for a second preset time, ejecting the ejector rod of the injection molding machine for a second time, and driving the ejector pin 147 by the top plate 141 to eject the nozzle material from the nozzle 131.

It is understood that the second predetermined time refers to the time from the end of the pressure maintaining to the time when the injection molded product and the nozzle material can be taken out; the ejector rod of the injection molding machine is ejected for the second time after the movable mold 11 and the fixed mold 12 are completely opened, the ejector rod of the injection molding machine pushes the top plate 141 to move, and the top plate 141 drives the ejector pin 147 to extend into the water gap 131 so as to eject the water gap material from the water gap 131; the ejector rod of the injection molding machine is used for ejecting for the second time, so that the water gap material is separated from the water gap 131, the complete separation of the water gap material and an injection molding product is guaranteed, and meanwhile, the smooth proceeding of the next injection molding is guaranteed.

S300, taking out the injection molding product.

The injection molding product is taken out, and the whole injection molding process of the injection mold is completed; the injection-molded product can be removed from the injection mold by suction by a robot.

In summary, the present invention provides an in-mold cutting injection mold, which includes a fixed mold and a movable mold, wherein the movable mold is connected to the fixed mold to form a mold cavity, and the in-mold cutting injection mold further includes: the water gap plate is arranged on the movable die and provided with a water gap communicated with the die cavity; the ejection mechanism is movably arranged on the movable die; and one end of the cutting tool is connected with the ejection mechanism, the other end of the cutting tool is positioned at the connecting position of the water gap plate and the die cavity, and the cutting tool is driven by the ejection mechanism to cut the water gap material at the connecting position of the water gap plate and the die cavity. The water gap plate is arranged, so that the water gap, the cutting tool and the die cavity form a pouring channel, and guarantee is provided for an injection mold to form an injection product through injection molding; the ejection mechanism is movably arranged on the movable die, so that the ejection mechanism can move after the movable die and the fixed die are assembled, and the cutting tool is driven to perform cutting action, so that guarantee is provided for cutting the nozzle material in the die; set up the cutting tool through the department of meeting position at mouth of a river board and die cavity for the cutting tool realizes the mouth of a river material that automatic excision and injection moulding product are connected in the mould under ejection mechanism's drive, the effectual operation degree of difficulty that has eliminated artifical excision mouth of a river material has just promoted production efficiency, make simultaneously the cutting tool can amputate mouth of a river material when injection moulding product is not the complete cooling and hardening after the suppression, and then the effectual rupture vestige that presents on the injection moulding product who amputates mouth of a river material of having eliminated, the effectual follow-up processing degree of difficulty that has reduced.

It is to be understood that the utility model is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides an injection mold cuts in mould, includes cover half and movable mould, the movable mould with the cover half is connected and is formed the die cavity, its characterized in that, the injection mold cuts in the mould still includes:

the ejection mechanism is movably arranged on the movable die;

2. The in-mold cutting injection mold according to claim 1, further comprising:

a cutter body;

3. The in-mold cutting injection mold according to claim 2, wherein an end of the cutter orientation column facing away from the cutter body is provided with an orientation column guide cone, and the thickness of the orientation column guide cone gradually decreases in a direction facing away from the cutter body.

4. The in-mold cutting injection mold according to claim 2, wherein the first and second cutters each further comprise:

5. The in-mold cutting injection mold according to claim 4, wherein the blade portion comprises:

a blade body;

6. The in-mold cutting injection mold according to claim 5,

the nozzle plate is provided with a position avoiding slope corresponding to the position of the blade part, two ends of the position avoiding slope in the length direction are respectively connected with the two guide grooves, and the slope bottom of the position avoiding slope is lower than the top surface of the fixed die in the height direction.

7. The in-mold cutting injection mold according to any one of claims 2 to 6, further comprising:

the first fine positioning pieces are arranged on the movable die;

8. The in-mold cutting injection mold of claim 7, wherein the ejection mechanism comprises:

9. The in-mold cutting injection mold according to claim 8, wherein the ejection mechanism further comprises:

10. The in-mold cutting injection mold according to claim 8,

the ejection mechanism further includes:

the first cutter and the second cutter all still include: