CN223199435U - An injection mold structure for a pet traction chain - Google Patents

Abstract

The utility model discloses an injection mold structure for a pet leash chain, comprising: a lower mold assembly including a fixed mold base, a lower mold plate, a lower mold core, and a first translation drive mechanism; the lower mold cavity having a first longitudinal lower cavity, the lower mold core having a second longitudinal lower cavity, and the lower mold core being connected to the first translation drive mechanism; an upper mold assembly including a movable mold base, a sliding guide mechanism, an upper mold plate, two steering linkage blocks, and two upper mold cores; the sliding guide mechanisms respectively connecting the movable mold base and the upper mold plate; the two steering linkage blocks being connected below the movable mold base; the bottoms of the steering linkage blocks being provided with a first inclined surface; the upper mold cores being slidably connected to the upper mold cavity; the bottoms of the upper mold cores being provided with a transverse cavity; one side of the upper mold core being provided with a longitudinal upper cavity; the tops of the upper mold cores being provided with a second inclined surface; and a transverse spring being connected between the two upper mold cores. The utility model has high injection molding production efficiency, a simple and compact structure, can effectively ensure the effect of stripping and separation, and achieves good injection molding production results.

Description

Injection mold structure of pet traction chain

Technical Field

The utility model relates to the field of injection molds, in particular to an injection mold structure of a pet traction chain.

Background

The mold is used for manufacturing molded articles, the injection mold is used for molding molten plastics, and the molten plastics material stirred by a screw rod is injected into a mold cavity at a certain temperature under high pressure, and the molded articles are obtained after cooling and solidifying.

The pet traction chain is an appliance for traction of pets, and is formed by connecting and combining a plurality of annular buckles, and in the related art, the manufacturing of the chain is usually realized by adopting an injection molding mode to manufacture a plurality of independent annular buckles, and the assembly of the chain is realized by arranging notch parts on the annular buckles, so that the assembly action is complex, and the production efficiency is low.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the injection mold structure of the pet traction chain provided by the utility model can effectively simplify the production steps of the chain, and has the advantages of high production efficiency and low production cost.

According to an embodiment of the utility model, an injection mold structure of a pet traction chain comprises:

The lower die assembly comprises a fixed die holder, a lower die plate, a lower die core and a first translation driving mechanism, wherein the lower die plate is connected to the fixed die holder, the lower die plate is provided with a lower die cavity, a first longitudinal lower die cavity is formed in a cavity wall of one side of the lower die cavity, the lower die core is arranged in the lower die cavity, a second longitudinal lower die cavity matched with the first longitudinal lower die cavity is formed in one side of the lower die core, the lower die core is connected to the first translation driving mechanism, and the first translation driving mechanism is used for driving the lower die core to translate relative to the second longitudinal lower die cavity;

The upper die assembly comprises a movable die holder, a sliding guide mechanism, an upper die plate, two steering linkage blocks and two upper die cores, wherein the sliding guide mechanism is respectively connected with the movable die holder and the upper die plate, the sliding guide mechanism is used for limiting the longitudinal position of the upper die plate relative to the movable die holder, the upper die plate is positioned right above the lower die plate, the upper die plate is provided with an upper die cavity, the two steering linkage blocks are connected under the movable die holder, the bottom of each steering linkage block is provided with a first inclined plane which inclines from top to bottom and deviates from the center of the upper die cavity, the two upper die cores are respectively connected in the upper die cavity in a sliding manner, the bottom of each upper die core is provided with a transverse die cavity, the two transverse die cavities are used for being matched with the top surface of the lower die plate to form a transverse injection molding cavity, the upper die cores are arranged on the two sides of the upper die cores, which are close to the center of the upper die cavity, are respectively provided with a longitudinal upper die cavity, the two longitudinal upper die cavities are used for being matched with the first longitudinal lower die cavity and the second longitudinal lower die cavity to form a longitudinal injection cavity, the transverse injection cavity and the longitudinal injection cavity are used for injection molding of the pet traction chain, the top of each upper die core is respectively provided with a second inclined surface matched with the corresponding first inclined surface, the second inclined surfaces are abutted under the first inclined surfaces, the two steering linkage blocks are used for pushing the two upper die cores to be close to each other, a transverse spring is connected between the two upper die cores, the transverse spring is used for enabling the two upper die cores to form a movement trend deviating from each other, and one side of each upper die core, which is close to the center of the upper die cavity, is respectively provided with an injection molding runner used for connecting the longitudinal upper die cavity and the transverse die cavity.

In the embodiment, the first longitudinal lower cavity comprises n independent first semi-annular grooves, n is an integer larger than 1, the second longitudinal lower cavity comprises n independent second semi-annular grooves, the longitudinal upper cavity comprises n independent third semi-annular grooves, the first semi-annular grooves, the second semi-annular grooves and the third semi-annular grooves all extend along the direction vertical to the horizontal plane, the longitudinal injection cavity comprises n longitudinal annular cavities all vertical to the horizontal plane, the transverse cavity comprises m independent transverse semi-annular grooves, m is an integer larger than 1, the transverse semi-annular grooves extend along the direction parallel to the horizontal plane, the transverse injection cavity comprises m transverse annular cavities all parallel to the horizontal plane, and the longitudinal annular cavities are connected with the transverse annular cavities in a ring buckling mode.

In this embodiment, the runner of moulding plastics includes sprue, first subchannel, second subchannel and third subchannel, first subchannel is connected to the one end of sprue, and the other end of sprue is used for connecting the injection head of injection molding machine, and the second subchannel is equipped with n, and first subchannel is all connected to the one end of each second subchannel, and the corresponding third semi-annular groove is connected respectively to the other end of each second subchannel, and the third subchannel is equipped with n, and the third subchannel is the reverse T font, and third semi-annular groove and two adjacent horizontal semi-annular grooves are connected respectively to the three end of third subchannel.

In this embodiment, the first semi-annular groove, the second semi-annular groove, the third semi-annular groove and the transverse semi-annular groove are all semi-annular groove structures with wavy edges.

In this embodiment, lower die assembly still includes second translation actuating mechanism, takes off the material roof and takes off the material thimble, the lower bolster still is equipped with takes off the material and steps down the chamber and take off the material jack, take off the relative both ends in material jack and communicate first vertical lower die cavity and take off the material respectively and step down the chamber, take off the material roof and locate take off the material and step down the chamber, take off the material roof and be connected in second translation actuating mechanism, take off the material thimble and be connected in taking off the material roof and be close to one side of first vertical lower die cavity, take off the material thimble and wear to locate in taking off the material jack.

In this embodiment, a first receiving groove is formed on one side of each upper mold core near the center of the upper mold cavity, and opposite ends of the transverse spring are respectively disposed in the two opposite first receiving grooves.

In this embodiment, guide sliding blocks are disposed on inner walls of two opposite sides of the upper mold cavity, guide sliding grooves are disposed on two opposite sides of each upper mold core, and each guide sliding block is slidably connected to a corresponding guide sliding groove.

In this embodiment, the top of the upper mold core is provided with an inclined chute, the bottom of the steering linkage block is provided with an inclined slide block, the inclined slide block is slidably connected in the inclined chute, and the inclined chute inclines from top to bottom away from the center of the upper mold cavity.

In this embodiment, the movable die holder is provided with a guide hole, the upper die plate is connected with a guide pillar, the upper die assembly further comprises a longitudinal spring, the guide pillar is arranged in the guide hole in a penetrating manner, a limiting block is arranged at the top of the guide pillar, the longitudinal spring is sleeved outside the guide pillar, and two opposite ends of the longitudinal spring are respectively connected with the movable die holder and the upper die plate, so that the upper die plate forms a trend of moving away from the movable die holder.

In this embodiment, the top of the movable mold base is provided with a second storage groove connected to the top of the guide hole, and the limiting block is slidably connected in the second storage groove.

The embodiment of the utility model has at least the following beneficial effects:

The pet traction chain has the advantages that the complex structure of the pet traction chain can be formed in one step through each cavity distributed along the transverse direction and the longitudinal direction, the production flow can be effectively simplified, the production period is shortened, the injection molding production efficiency is high, the production cost can be effectively reduced, during mold closing, the lower mold core is matched with the lower mold plate through the first translation driving mechanism, the mold clamping force drives the two upper mold cores to be mutually close to and abutted to each other through the action of the steering linkage block, the complete ring buckle type chain injection molding space for producing the pet traction chain through injection molding is formed through matching, the reliability of injection molding processing action can be effectively ensured, the structure is compact, the mold cost can be effectively reduced, during mold opening, the upper mold plate and the lower mold plate are mutually far away, the lower mold cores are separated from the inner wall of the lower mold cavity where the first longitudinal lower mold cavity is located, the two upper mold cores are mutually separated under the action of the transverse spring, the mold cavities are separated from each other from the pet traction chain produced through injection molding through different dimensions, the stripping separation effect of the pet traction chain can be effectively ensured, and the injection molding production effect is good.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic perspective view of an injection mold structure of a pet traction chain according to an embodiment of the present utility model when the injection mold structure is opened;

Fig. 2 is a schematic perspective view of an injection mold structure of a pet traction chain according to an embodiment of the present utility model at another view angle when the injection mold structure is opened;

Fig. 3 is a schematic perspective view of an injection mold structure of a pet traction chain according to an embodiment of the present utility model when the injection mold structure is closed;

fig. 4 is an exploded view of an injection mold structure of a pet traction chain according to an embodiment of the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 4A;

FIG. 6 is a schematic perspective view of the injection mold structure of the pet traction chain according to the embodiment of the present utility model in a top view when the injection mold structure is closed;

FIG. 7 is a schematic cross-sectional view taken along line B-B' of FIG. 6;

FIG. 8 is a schematic cross-sectional view taken along line C-C' of FIG. 6;

Fig. 9 is an enlarged schematic view of the structure D in fig. 8.

Reference numerals:

The lower die assembly 1000, the fixed die seat 1100, the lower die plate 1200, the lower die cavity 1210, the first longitudinal lower die cavity 1220, the first half annular groove 1221, the stripping abdication cavity 1230, the stripping top hole 1240, the lower die core 1300, the second longitudinal lower die cavity 1310, the second half annular groove 1311, the first translation driving mechanism 1400, the second translation driving mechanism 1500, the stripping top plate 1600 and the stripping thimble 1700;

The upper die assembly 2000, the movable die holder 2100, the guide hole 2110, the second receiving groove 2120, the sliding guide mechanism 2200, the guide post 2210, the stopper 2211, the longitudinal spring 2220, the upper die plate 2300, the upper die cavity 2310, the guide slide 2320, the steering linkage block 2400, the first inclined surface 2410, the inclined slide 2420, the upper die core 2500, the transverse die cavity 2510, the transverse semi-annular groove 2511, the longitudinal upper die cavity 2520, the third semi-annular groove 2521, the second inclined surface 2530, the first receiving groove 2540, the guide chute 2550, the inclined chute 2560, the transverse spring 2600, the injection runner 2700, the main runner 2710, the first split runner 2720, the second split runner 2730, and the third split runner 2740.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, left, right, front, rear, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The mold is used for manufacturing molded articles, the injection mold is used for molding molten plastics, and the molten plastics material stirred by a screw rod is injected into a mold cavity at a certain temperature under high pressure, and the molded articles are obtained after cooling and solidifying. The pet traction chain is an appliance for drawing pets, and is formed by connecting and combining a plurality of annular buckles, in the related art, a plurality of independent annular buckles are usually manufactured in an injection molding mode, and the assembly of the chain is realized by arranging notch parts on the annular buckles, so that the assembly action is complex, the production efficiency is low, the production cost is high, and the stability of the pet traction chain can be reduced due to the notch parts of the chain structure.

The following describes the injection mold structure of the pet traction chain according to the embodiment of the utility model with reference to fig. 1 to 9, which can effectively simplify the production steps of the chain, and has high production efficiency and low production cost.

Referring to fig. 1 to 9, an injection mold structure of a pet traction chain according to an embodiment of the present utility model includes:

The lower die assembly 1000 comprises a fixed die holder 1100, a lower die plate 1200, a lower die core 1300 and a first translation driving mechanism 1400, wherein the lower die plate 1200 is connected to the fixed die holder 1100, the fixed die holder 1100 is used for being connected with a machine table fixed plate of an external injection molding machine, the lower die plate 1200 is provided with a lower die cavity 1210, a first longitudinal lower die cavity 1220 is arranged at one side cavity wall of the lower die cavity 1210, the lower die core 1300 is arranged in the lower die cavity 1210, a second longitudinal lower die cavity 1310 matched with the first longitudinal lower die cavity 1220 is arranged at one side of the lower die core 1300, the second longitudinal lower die cavity 1310 is arranged at one side of the lower die core 1300 close to the first longitudinal lower die cavity 1220, the lower die core 1300 is connected to the first translation driving mechanism 1400, the first translation driving mechanism 1400 is used for driving the lower die core 1300 to move close to or away from the translation relative to the second longitudinal lower die cavity 1310 so as to realize combination and separation between the first longitudinal lower die cavity 1220 and the second longitudinal lower die cavity 1310, and after the first longitudinal lower die cavity 1220 and the second longitudinal lower die cavity 1310 are combined, a lower die cavity with only an opening is formed at the top, and preferably, the first translation driving mechanism 1400 is an air cylinder driven along the horizontal direction;

The upper die assembly 2000 comprises a movable die holder 2100, a sliding guide mechanism 2200, an upper die plate 2300, two steering linkage blocks 2400 and two upper die cores 2500, wherein the movable die holder 2100 is used for being connected with a pushing movable plate of an external injection molding machine, the upper die assembly 2000 is positioned right above the lower die assembly 1000, the upper die plate 2300 is positioned below the movable die holder 2100, the sliding guide mechanism 2200 is respectively connected with the movable die holder 2100 and the upper die plate 2300, the sliding guide mechanism 2200 is used for limiting the longitudinal position of the upper die plate 2300 relative to the movable die holder 2100, namely, the longitudinal position is the height position vertical to the horizontal plane, the upper die plate 2300 is positioned right above the lower die plate 1200, an upper die cavity 2310 is arranged below the upper die plate 2300, the two steering linkage blocks 2400 are fixedly connected under the movable die holder 2100, a first inclined surface 2410 inclined from top to bottom and deviating from the center of the upper die cavity 2310 is arranged at the bottom of each steering linkage block 2400, the two upper die cores 2500 are transversely and slidingly connected in the upper die cavity 2310, the two upper mold cores 2500 are limited in the upper mold cavity 2310 to horizontally slide, the bottom of each upper mold core 2500 is provided with a transverse mold cavity 2510, the two transverse mold cavities 2510 are used for being matched with the top surface of the lower mold plate 1200 to form a transverse injection mold cavity, one side of each upper mold core 2500 close to the center of the upper mold cavity 2310 is provided with a longitudinal upper mold cavity 2520, the two longitudinal upper mold cavities 2520 are used for being matched with the first longitudinal lower mold cavity 1220 and the second longitudinal lower mold cavity 1310 to form a longitudinal injection mold cavity, the transverse injection mold cavity and the longitudinal injection mold cavity are mutually independent in a three-dimensional space, the horizontal projection of the transverse injection mold cavity is intersected with the horizontal projection of the longitudinal injection mold cavity, the transverse injection mold cavity and the longitudinal injection mold cavity obtained by mold closing form a ring buckle type chain injection mold space, the transverse injection mold cavity and the longitudinal injection mold cavity are used for combined injection molding of the pet traction chain, the top of each upper mold core 2500 is provided with a second inclined surface 2530 matched with the corresponding first inclined surface 2410, the second inclined plane 2530 is abutted under the first inclined plane 2410, the two steering linkage blocks 2400 are used for pushing the two upper mold cores 2500 to be close to each other through the guiding of the first inclined plane 2410 and the second inclined plane 2530, so that the two upper mold cores 2500 are abutted to each other, the two longitudinal upper mold cavities 2520 are combined to form an upper injection molding cavity with an opening only on the bottom surface, the upper injection molding cavity is used for being matched with the lower injection molding cavity to form a longitudinal injection molding cavity, the upper mold assembly 2000 further comprises a transverse spring 2600, the transverse spring 2600 is connected between the two upper mold cores 2500, the transverse spring 2600 is used for enabling the two upper mold cores 2500 to form a movement trend deviating from each other along the horizontal direction, and one side, close to the center of the upper mold cavity 2310, of each upper mold core 2500 is provided with an injection runner 2700 used for connecting the longitudinal upper mold cavity 2520 and the transverse mold cavity 2510, and the demolding effect of runner waste can be effectively ensured through the arrangement of the injection runner 2700 on one side of the upper mold core 2500.

The working process is as follows:

The mold closing, referring to fig. 3, 7, 8 and 9, the first translational driving mechanism 1400 drives the lower mold core 1300 to move close to the first longitudinal lower mold cavity 1220, so that the first longitudinal lower mold cavity 1220 and the second longitudinal lower mold cavity 1310 are combined to form a lower injection molding cavity with an opening on the top surface, the external injection molding machine drives the movable mold base 2100 to descend through pushing the movable plate, the upper mold plate 2300 is abutted to the lower mold base 1200, the upper mold base 2100 is close to each other in the gradual descending process of the movable mold base 2100, the longitudinal driving force of the steering linkage block 2400 is converted into the transverse driving force acting on the upper mold core 2500 through the interaction of the first inclined surface 2410 and the second inclined surface 2530, the two upper mold cores 2500 are close to each other and abutted against each other, the two longitudinal upper mold cavities 2520 are combined and matched with the first longitudinal lower mold cavity 1220 and the second longitudinal lower mold cavity 1310 to form a longitudinal injection molding cavity, the two transverse mold cavities 2510 are combined and matched with the top surface of the lower mold base 1200 to form a transverse injection molding cavity, and the injection molding machine injects molten material into the longitudinal upper mold cavity 2520 and the transverse mold cavity 2510 through the injection molding channel 2700, and the pet chain is cooled to obtain traction;

The mold is opened, referring to fig. 1 and 2, the external injection molding machine drives the movable mold base 2100 to rise by pushing the movable plate, the upper mold plate 2300 is separated from the lower mold plate 1200 to rise, the two longitudinal upper mold cavities 2520 and the two transverse mold cavities 2510 are separated from the lower mold plate 1200 to rise, in the process that the movable mold base 2100 gradually rises, the two upper mold cores 2500 deviate from each other under the elastic force of the transverse spring 2600, the two longitudinal upper mold cavities 2520 are separated from each other, at this time, the pet traction chain is separated from the longitudinal upper mold cavities 2520 and the transverse mold cavities 2510 of the upper mold core 2500, the first translation driving mechanism 1400 drives the lower mold core 1300 to deviate from the first longitudinal lower mold cavity 1220 to move, so that the first longitudinal lower mold cavity 1220 is separated from the second longitudinal lower mold cavity 1310, and the pet traction chain is obtained by separation.

The complex structure of the pet traction chain can be molded once through the cavities distributed along the transverse direction and the longitudinal direction, the production flow can be effectively simplified, the production period is shortened, the injection molding production efficiency is high, the production cost can be effectively reduced, during mold closing, the lower mold insert 1300 is matched with the lower mold plate 1200 through the first translation driving mechanism 1400, and the mold closing force drives the two upper mold inserts 2500 to be mutually close to and abutted against each other through the action of the steering linkage block 2400, so that the complete ring-buckle type chain injection molding space for producing the pet traction chain through injection molding is formed through matching, the reliability of injection molding processing action can be effectively ensured, the action is coherent and reliable, the injection molding precision is high, the structure is compact, and the mold cost can be effectively reduced; when the mold is opened, the upper mold plate 2300 and the lower mold plate 1200 are mutually far away, the lower mold core 1300 is separated from the inner wall of the lower mold cavity 1210 where the first longitudinal lower mold cavity 1220 is located, the two upper mold cores 2500 are mutually separated under the action of the transverse springs 2600, the first longitudinal lower mold cavity 1220, the second longitudinal lower mold cavity 1310 and the two longitudinal upper mold cavities 2520 respectively move along different directions, the two transverse mold cavities 2510 are mutually separated and synchronously move far away from the lower mold plate 1200, each mold cavity can separate from the pet traction chain manufactured by injection molding from different dimensions, the stripping and separating effects of the pet traction chain with a complex structure can be effectively ensured, and the injection molding production effect is good.

It will be appreciated that the first lower longitudinal cavity 1220 includes n independent first half annular grooves 1221, a space is formed between each adjacent two first half annular grooves 1221, each first half annular groove 1221 is independent of each other, n is an integer greater than 1, that is, n is an integer of at least 2, the second lower longitudinal cavity 1310 includes n independent second half annular grooves 1311, a space is formed between each adjacent two second half annular grooves 1311, each second half annular groove 1311 is independent of each other, each upper longitudinal cavity 2520 includes n independent third half annular grooves 2521, a space is formed between each adjacent two third half annular grooves 2521, each third half annular groove 2521 is independent of each other, all of the first half annular grooves 1221, the second half annular grooves 1311 and the third half annular grooves 2521 extend in a direction perpendicular to a horizontal plane, the notch of the first semi-annular groove 1221 and the notch of the second semi-annular groove 1311 face the center of the lower die cavity 1210, the two ends of the first semi-annular groove 1221 are located at the top surface of the lower die plate 1200, the two ends of the second semi-annular groove 1311 are located at the top surface of the lower die core 1300, after the first longitudinal lower die cavity 1220 and the second longitudinal lower die cavity 1310 are combined, n lower injection molding cavities with openings at the top and in semi-annular shape are formed, the notch of the third semi-annular groove 2521 faces the center of the upper die cavity 2310, the two ends of the third semi-annular groove 2521 are located at the bottom surface of the upper die core 2500, after the two longitudinal upper die cavities 2520 are combined, n upper injection molding cavities with openings at the bottom and in semi-annular shape are formed, each longitudinal injection molding cavity comprises n longitudinal annular cavities which are perpendicular to the horizontal plane and are mutually independent, namely, after the upper injection molding cavities and the lower injection molding cavities are combined, longitudinal injection molding cavities with n independent longitudinal annular cavities are formed, each of the longitudinal annular cavities is perpendicular to the horizontal plane.

Each transverse cavity 2510 comprises m independent transverse semi-annular grooves 2511, m is an integer larger than 1, namely m is an integer smaller than 2, n-1 is smaller than or equal to m and is smaller than or equal to n+1, all the transverse semi-annular grooves 2511 extend along the direction parallel to the horizontal plane, each transverse injection cavity comprises m transverse annular cavities which are parallel to the horizontal plane and are independent from each other, namely, the transverse cavity 2510 is matched with the top surface of the lower template 1200 to form a transverse injection cavity with m independent transverse annular cavities, each annular structure in the transverse injection cavity is parallel to the horizontal plane, the longitudinal annular cavities and the transverse annular cavities are connected in a ring-shaped manner in a three-dimensional space, the transverse injection cavity and the longitudinal injection cavity form a ring-shaped chain injection space for fastening pets alternately in a transverse and longitudinal manner, a ring-shaped traction chain can be manufactured through the ring-shaped chain injection space, the step of assembling a ring-shaped buckle in the traditional technology can be effectively omitted, the production efficiency can be remarkably improved, and the production difficulty can be effectively reduced.

It is to be understood that the injection molding runner 2700 includes a main runner 2710, a first split runner 2720, a second split runner 2730 and a third split runner 2740, one end of the main runner 2710 is connected with the first split runner 2720, the other end of the main runner 2710 is used for connecting an injection head of an external injection molding machine, the injection head of the injection molding machine injects molten plastic into the main runner 2710, the second split runner 2730 is provided with n, one end of each second split runner 2730 is connected with the first split runner 2720, the other end of each second split runner 2730 is respectively connected with each corresponding third semi-ring groove 2521, the third split runner 2740 is provided with n, the third split runner 2740 is in an inverted T shape, and three ends of each third split runner 2740 are respectively connected with each corresponding third semi-ring groove 2521 and two semi-ring grooves 2511 on two adjacent sides, namely, each third split runner 2740 is connected with one third split runner 2740, and two adjacent semi-ring grooves 2511 are respectively connected at two ends of the bottom of the third split runner 2740. Preferably, the movable mold base 2100 is further provided with an injection hole for connecting the other end of the main runner 2710, and the main runner 2710 is connected with an injection head of an external injection molding machine through the injection hole.

Specifically, the cross-sectional area of the second diversion channel 2730 gradually decreases from the first diversion channel 2720 to the direction of the third semi-annular groove 2521, the three-end opening area of the third diversion channel 2740 is smaller than the middle cross-sectional area of the third diversion channel 2740, the difficulty of separating the waste materials at the water gap of the flow channel from the pet traction chain body can be effectively reduced, and the separation efficiency is high.

It is appreciated that the first half annular groove 1221, the second half annular groove 1311, the third half annular groove 2521 and the transverse half annular groove 2511 are all in a half annular groove structure with concave-convex wavy edges, and a pet traction chain with a wavy-shaped ring buckle can be manufactured.

It can be appreciated that the lower die assembly 1000 further includes a second translational driving mechanism 1500, a stripper top plate 1600 and a stripper ejector pin 1700, the lower die plate 1200 is further provided with a stripper relief cavity 1230 and a stripper ejector hole 1240, the stripper relief cavity 1230 is located at one side of the lower die cavity 1210, opposite ends of the stripper ejector hole 1240 are respectively communicated with the first longitudinal lower die cavity 1220 and the stripper relief cavity 1230, the stripper top plate 1600 is slidably connected to the stripper relief cavity 1230, the stripper top plate 1600 is connected to the driving end of the second translational driving mechanism 1500, the stripper ejector pin 1700 is connected to one side of the stripper top plate 1600 close to the first longitudinal lower die cavity 1220, the stripper ejector pin 1700 is inserted into the stripper ejector hole 1240, and the second translational driving mechanism 1500 is used for driving the stripper top plate 1600 to horizontally move in the stripper relief cavity 1230, so as to drive the stripper ejector pin 1700 to horizontally slide in the stripper ejector hole 1240, preferably, the second translational driving mechanism 1500 is a cylinder driven along the horizontal direction.

After injection molding is completed, the external injection molding machine drives the movable mold base 2100 to rise through pushing the movable plate, the upper mold plate 2300 is separated from the lower mold plate 1200 to rise, the two longitudinal upper mold cavities 2520 and the two transverse mold cavities 2510 are separated from the lower mold plate 1200 to rise, the transverse springs 2600 drive the two upper mold cores 2500 to deviate from each other in the process that the movable mold base 2100 gradually rises, the two longitudinal upper mold cavities 2520 are separated from each other, at this time, the pet traction chain is separated from the longitudinal upper mold cavities 2520 and the transverse mold cavities 2510 of the upper mold cores 2500, the first translation driving mechanism 1400 drives the lower mold cores 1300 to deviate from the first longitudinal lower mold cavities 1220, the pet traction chain is separated from the second longitudinal lower mold cavities 1310 to move, the second translation driving mechanism 1500 drives the stripping top plate 1600 to move along the stripping giving way cavity 1230 to be close to the lower mold cavity 1210, and the stripping thimble 1700 moves along the stripping top hole 1240 to be close to the first longitudinal lower mold cavity 1220, so that the pet traction chain is separated from the first longitudinal lower mold cavities 1220, and reliable stripping action can be realized.

Specifically, a translational limiting structure is disposed between the lower mold core 1300 and the lower mold cavity 1210, for limiting a movement track of the lower mold core 1300 in the lower mold cavity 1210, for example, first limiting strips are disposed at bottoms of two opposite sides of the lower mold core 1300, second limiting strips are disposed at tops of two opposite sides of the lower mold cavity 1210, the two first limiting strips are respectively abutted under the two second limiting strips, and the fixed mold seat 1100 is abutted under the two first limiting strips.

It can be appreciated that the side of each upper mold core 2500, which is close to the center of the upper mold cavity 2310, is provided with a first receiving groove 2540, opposite ends of the transverse spring 2600 are respectively disposed in two opposite first receiving grooves 2540, the transverse spring 2600 is received by the first receiving grooves 2540, and when the mold is closed, the transverse spring 2600 is completely received in the first receiving grooves 2540, so that the two upper mold cores 2500 can be ensured to be tightly abutted, and thus the two longitudinal upper mold cavities 2520 can be tightly spliced to form an upper injection molding cavity with only an opening at the bottom.

It can be appreciated that the inner walls of two opposite sides of the upper mold cavity 2310 are provided with guide sliding blocks 2320, two opposite sides of each upper mold core 2500 are provided with guide sliding grooves 2550, each guide sliding block 2320 is slidably connected to the corresponding guide sliding groove 2550, the movement track of the upper mold core 2500 can be effectively limited to be parallel to the horizontal plane and parallel to the connecting line between the two upper mold cores 2500 by matching the guide sliding blocks 2320 with the guide sliding grooves 2550, so that the two upper mold cores 2500 can only move along the horizontal plane to approach or depart from each other, and the reliability of the movable action of the upper mold cores 2500 can be effectively improved. The guide chute 2550 may be provided as a T-shaped chute and the guide slider 2320 may be provided as a T-shaped slider.

Specifically, cope match-plate pattern 2300 includes semi-annular frame and sealing strip, semi-annular frame is the U font, sealing strip connects in semi-annular frame's U font opening department and realizes semi-annular frame's closure, go up die cavity 2310 and be the space around between sealing strip and the semi-annular frame, set up cope match-plate pattern 2300 into semi-annular frame and sealing strip through the components of a whole that can function independently, can effectively conveniently install last mould benevolence 2500, ensure that direction slider 2320 can effectively wear to establish in direction spout 2550, preferably, can carry out fixed connection through the screw between sealing strip and the semi-annular frame.

It can be appreciated that the top of the upper mold 2500 is provided with a diagonal sliding groove 2560, the bottom of the steering linkage block 2400 is provided with a diagonal sliding block 2420, the diagonal sliding block 2420 is slidably connected in the diagonal sliding groove 2560, the diagonal sliding groove 2560 extends obliquely from top to bottom away from the center of the upper mold cavity 2310, the extending direction of the diagonal sliding groove 2560 is parallel to the first diagonal surface 2410, the diagonal sliding block 2420 can slide obliquely in the diagonal sliding groove 2560, the relative sliding track between the diagonal sliding block 2420 and the diagonal sliding groove 2560 is parallel to the first diagonal surface 2410, and the reliability of the steering linkage action between the steering linkage block 2400 and the upper mold 2500 can be effectively improved by matching the diagonal sliding block 2420 with the diagonal sliding groove 2560. Specifically, the inclined slide 2420 is a dovetail slide, the inclined slide 2560 is a dovetail slide, and in addition, the inclined slide 2420 may be an inverted T-shaped slide, and the inclined slide 2560 is an inverted T-shaped slide.

It can be appreciated that the movable die holder 2100 is provided with a guide hole 2110, the sliding guide mechanism 2200 includes a guide pillar 2210 and a longitudinal spring 2220, the guide pillar 2210 is fixedly connected to the upper die plate 2300, the guide pillar 2210 is arranged in the guide hole 2110 in a penetrating manner, a limiting block 2211 is arranged at the top of the guide pillar 2210, the relative position between the upper die plate 2300 and the movable die holder 2100 can be effectively limited, the upper die plate 2300 can be effectively prevented from being completely separated from the movable die holder 2100, the longitudinal spring 2220 is sleeved outside the guide pillar 2210, the opposite ends of the longitudinal spring 2220 are respectively connected with the movable die holder 2100 and the upper die plate 2300, so that the upper die plate 2300 forms a trend deviating from the movement of the movable die holder 2100, and the stability of die closing and opening actions during the integral injection molding process can be effectively improved through the longitudinal spring 2220.

Specifically, the guide post 2210 and the upper template 2300 may be fixedly mounted by screws, and four guide posts 2210, four longitudinal springs 2220 and four guide holes 2110 are respectively provided and correspond to each other.

It can be appreciated that the top of the movable die holder 2100 is provided with a second receiving groove 2120 connected to the top of the guide hole 2110, the guide hole 2110 is connected to the bottom of the second receiving groove 2120, the limiting block 2211 is slidably connected to the second receiving groove 2120, the linear distance between the movable die holder 2100 and the upper die plate 2300 capable of moving relatively is h, the thickness of the limiting block 2211 is d, the depth of the second receiving groove 2120 is greater than the sum of h and d, the limiting block 2211 can be effectively prevented from being completely separated from the second receiving groove 2120 and protruding out of the movable die holder 2100, and the reliability of the opening and closing operation can be effectively improved. When the guide post 2210, the longitudinal spring 2220, and the guide hole 2110 are all provided with four, the second receiving groove 2120 is also provided with corresponding four.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims (10)

1. An injection mold structure of a pet traction chain, comprising:

The lower die assembly (1000) comprises a fixed die holder (1100), a lower die plate (1200), a lower die core (1300) and a first translation driving mechanism (1400), wherein the lower die plate (1200) is connected to the fixed die holder (1100), the lower die plate (1200) is provided with a lower die cavity (1210), a first longitudinal lower die cavity (1220) is arranged at one side cavity wall of the lower die cavity (1210), the lower die core (1300) is arranged in the lower die cavity (1210), a second longitudinal lower die cavity (1310) matched with the first longitudinal lower die cavity (1220) is arranged at one side of the lower die core (1300), the lower die core (1300) is connected to the first translation driving mechanism (1400), and the first translation driving mechanism (1400) is used for driving the lower die core (1300) to translate relative to the second longitudinal lower die cavity (1310);

The upper die assembly (2000) comprises a movable die holder (2100), a sliding guide mechanism (2200), an upper die plate (2300), two steering linkage blocks (2400) and two upper die cores (2500), wherein the sliding guide mechanism (2200) is respectively connected with the movable die holder (2100) and the upper die plate (2300), the sliding guide mechanism (2200) is used for limiting the longitudinal position of the upper die plate (2300) relative to the movable die holder (2100), the upper die plate (2300) is positioned right above the lower die plate (1200), the upper die plate (2300) is provided with an upper die cavity (2310), the two steering linkage blocks (2400) are connected under the movable die holder (2100), the bottom of each steering linkage block (2400) is provided with a first inclined surface (2410) inclined from top to bottom and deviating from the center of the upper die cavity (2310), the two upper die cores (2500) are respectively connected in a sliding mode in the upper die cavity (2310), the bottom of each upper die core (2500) is provided with a transverse die cavity (2510) and a transverse die cavity (2510) is arranged at the bottom of each upper die cavity (2500) and is matched with the upper die cavity (2310), the two vertical upper cavities (2520) are used for matching the first vertical lower cavities (1220) and the second vertical lower cavities (1310) to form a vertical injection cavity, the horizontal injection cavity and the vertical injection cavity are used for injecting a pet traction chain, the top of each upper cavity (2500) is provided with a second inclined surface (2530) matched with the corresponding first inclined surface (2410), the second inclined surface (2530) is abutted under the first inclined surface (2410), the two steering linkage blocks (2400) are used for pushing the two upper cavities (2500) to be close to each other, a horizontal spring (2600) is connected between the two upper cavities (2500), the horizontal spring (2600) is used for enabling the two upper cavities (2500) to form a movement trend deviating from each other, and one side of each upper cavity (2500) close to the center of the upper cavity (2310) is provided with an injection runner (2700) used for connecting the vertical upper cavities (2520) and the horizontal cavities (2510).

2. The injection mold structure of the pet traction chain according to claim 1, wherein the first longitudinal lower cavity (1220) comprises n independent first semi-annular grooves (1221), n is an integer greater than 1, the second longitudinal lower cavity (1310) comprises n independent second semi-annular grooves (1311), the longitudinal upper cavity (2520) comprises n independent third semi-annular grooves (2521), the first semi-annular grooves (1221), the second semi-annular grooves (1311) and the third semi-annular grooves (2521) all extend in a direction perpendicular to a horizontal plane, the longitudinal injection cavity comprises n longitudinal annular cavities all perpendicular to the horizontal plane, the transverse cavity (2510) comprises m independent transverse semi-annular grooves (2511), m is an integer greater than 1, the transverse semi-annular grooves (2511) extend in a direction parallel to the horizontal plane, the transverse injection cavity comprises m transverse annular cavities all parallel to the horizontal plane, and the longitudinal annular cavities and the transverse annular cavities are connected in a ring-buckling manner.

3. The injection mold structure of the pet traction chain according to claim 2, wherein the injection molding runner (2700) comprises a main runner (2710), a first sub runner (2720), a second sub runner (2730) and a third sub runner (2740), one end of the main runner (2710) is connected with the first sub runner (2720), the other end of the main runner (2710) is used for being connected with an injection head of an injection molding machine, the second sub runners (2730) are provided with n, one end of each second sub runner (2730) is connected with the first sub runner (2720), the other end of each second sub runner (2730) is connected with the corresponding third semi-ring groove (2521), the third sub runner (2740) is provided with n, the third sub runner (2740) is in an inverted T shape, and three ends of the third sub runner (2740) are respectively connected with the third semi-ring groove (2521) and two adjacent semi-ring grooves (2511).

4. An injection mold structure of a pet traction chain according to claim 3, wherein the first semi-annular groove (1221), the second semi-annular groove (1311), the third semi-annular groove (2521) and the transverse semi-annular groove (2511) are all semi-annular groove structures with wavy edges.

5. The injection mold structure of the pet traction chain according to claim 1, wherein the lower mold assembly (1000) further comprises a second translational driving mechanism (1500), a stripping top plate (1600) and a stripping thimble (1700), the lower mold plate (1200) is further provided with a stripping yield cavity (1230) and a stripping top hole (1240), opposite ends of the stripping top hole (1240) are respectively communicated with the first longitudinal lower cavity (1220) and the stripping yield cavity (1230), the stripping top plate (1600) is arranged in the stripping yield cavity (1230), the stripping top plate (1600) is connected to the second translational driving mechanism (1500), the stripping thimble (1700) is connected to one side, close to the first longitudinal lower cavity (1220), of the stripping top plate (1600), and the stripping thimble (1700) is arranged in the stripping top hole (1240).

6. The injection mold structure of a pet traction chain according to claim 1, wherein a first receiving groove (2540) is formed on one side of each upper mold core (2500) close to the center of the upper mold cavity (2310), and opposite ends of the transverse spring (2600) are respectively disposed in two opposite first receiving grooves (2540).

7. The injection mold structure of a pet traction chain according to claim 1, wherein guide sliding blocks (2320) are respectively arranged on inner walls of two opposite sides of the upper mold cavity (2310), guide sliding grooves (2550) are respectively arranged on two opposite sides of each upper mold core (2500), and each guide sliding block (2320) is slidably connected in the corresponding guide sliding groove (2550).

8. The injection mold structure of the pet traction chain according to claim 1, wherein an inclined chute (2560) is formed in the top of the upper mold core (2500), an inclined slide block (2420) is formed in the bottom of the steering linkage block (2400), the inclined slide block (2420) is slidably connected to the inclined chute (2560), and the inclined chute (2560) is inclined from top to bottom away from the center of the upper mold cavity (2310).

9. The injection mold structure of the pet traction chain according to claim 1, wherein the movable mold base (2100) is provided with a guide hole (2110), the sliding guide mechanism (2200) comprises a guide pillar (2210) and a longitudinal spring (2220), the guide pillar (2210) is connected to the upper mold plate (2300), the guide pillar (2210) is arranged in the guide hole (2110) in a penetrating manner, a limiting block (2211) is arranged at the top of the guide pillar (2210), the longitudinal spring (2220) is sleeved outside the guide pillar (2210), and two opposite ends of the longitudinal spring (2220) are respectively connected with the movable mold base (2100) and the upper mold plate (2300) so that the upper mold plate (2300) forms a trend of moving away from the movable mold base (2100).

10. The injection mold structure of the pet traction chain according to claim 9, wherein a second receiving groove (2120) connected to the top of the guide hole (2110) is formed in the top of the movable mold base (2100), and the limiting block (2211) is slidably connected to the second receiving groove (2120).