CN211251158U - Injection mold for lock buckle box - Google Patents

Abstract

A lock buckle box injection mold comprises an upper mold, a lower mold and a plurality of inner cores arranged between the upper mold and the lower mold, wherein a forming cavity matched with the lock buckle box in shape is formed between the inner cores and the upper mold and the lower mold; the inner core is provided with a plurality of sliding grooves in the vertical direction, an inward-inclined ejector rod is inserted in each sliding groove, and an inner forming protrusion matched with the groove in the inner wall of the lower cavity is arranged on the outer surface of the top of each inward-inclined ejector rod. The product ejecting device has the advantages that the grooves in the inner wall and the outer wall of the lower cavity can be formed, the product can be ejected upwards and released from a die, the product is automatically separated from the inverted buckle structure in the upward ejecting process, the die release is simple and efficient, damages such as scratches to the surface of the product are avoided, and the product quality is guaranteed.

Description

Injection mold for lock buckle box

The technical field is as follows:

the utility model relates to a box injection mold is detained to tool to lock.

Background art:

the existing lock buckle box 1 structure is shown in fig. 1-2, and comprises an upper cavity and a lower cavity, wherein the upper cavity 2 is easy to form and demold, and can be realized by utilizing the conventional mold structure, but due to the structural particularity of the lower cavity 3, the inner wall and the outer wall of the lower cavity are both provided with grooves 4, the forming is easy to realize, but the inside and the outside can form a back-off structure during demolding, the structure is very difficult to demold in the existing mold, generally, an operator is required to forcedly demold by means of other tools, the operation space in the mold is very narrow, the demolding operation difficulty is high, scratches and other damages to the surface of a product are easily caused, the quality of the finished product is influenced, and therefore, the design and the transformation of the lock buckle box mold become a technical problem which needs to be solved urge.

The utility model has the following contents:

the utility model discloses a remedy prior art not enough, provide a box injection mold is detained to tool to lock, reasonable in design both can carry out the shaping to the recess of cavity inner wall and outer wall down, can upwards ejecting drawing of patterns with the product again, and the product upwards breaks away from back-off structure voluntarily at ejecting in-process, and the drawing of patterns is simple high-efficient, has avoided causing damages such as mar to the product surface, has guaranteed product quality, has solved the problem that exists among the prior art.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

a lock buckle box injection mold comprises an upper mold, a lower mold and a plurality of inner cores arranged between the upper mold and the lower mold, wherein a forming cavity matched with the lock buckle box in shape is formed between the inner cores and the upper mold and the lower mold; the inner core is provided with a plurality of sliding grooves along the vertical direction, each sliding groove is internally and respectively inserted with an inward-inclined ejector rod, the outer surface of the top of each inner-inclined ejector rod is provided with an inner forming bulge matched with the groove of the inner wall of the lower cavity, the lower dies on the two sides of the inner core are respectively provided with outward-inclined ejector rods, the tops of the outward-inclined ejector rods are provided with cross rods extending towards the inner core, the ends of the cross rods are provided with outer forming bulges matched with the grooves of the outer wall of the lower cavity, the bottom of the lower die is provided with a lower die fixing plate, and the bottoms of the inner-inclined ejector rods and the outward-inclined ejector rods both downwards penetrate through the lower die fixing plate and a connecting plate arranged at; the push rod push plate is provided with a push rod bottom plate and a push rod mounting plate, a plurality of straight push rods are mounted on the push rod mounting plate, the straight push rods upwards penetrate through the connecting plate, the lower die fixing plate and the lower die and are used for upwards ejecting the formed lock buckle box, a reset rod and a reset spring sleeved outside the reset rod are arranged between the push rod mounting plate and the lower die, the bottom of the lower die fixing plate is provided with die legs, and the bottom of the die legs is provided with a lower panel.

The two sides of the ejector rod push plate are respectively provided with a mounting groove, a sliding block is movably arranged in the mounting groove, a spring is arranged between the sliding block and the bottom of the mounting groove, the sliding block can extend out of the mounting groove under the action of the spring, a pull block is arranged on the ejector rod bottom plate corresponding to the position of the sliding block, a drag hook matched with the bottom of the sliding block is arranged at the bottom of the pull block, a guide pillar is vertically arranged on the lower die fixing plate, a guide groove is formed in the guide pillar, the pull block is slidably arranged in the guide groove, and inclined planes matched with.

And the inner core is provided with a positioning column for positioning with the lower die.

The above technical scheme is adopted in the utility model, following advantage has:

in view of the utility model discloses the lock detains the particularity of the lower cavity structure of box, has carried out the design improvement to the mould, through mutually supporting of interior slope ejector pin and camber ejector pin, both can make progress the shaping to the recess of cavity internal wall and outer wall down, can make progress ejecting drawing of patterns with the product again, and the product makes progress ejecting in-process and breaks away from the back-off structure automatically, and the drawing of patterns is simple high-efficient, has avoided causing damages such as mar to the product surface, has guaranteed product quality.

Description of the drawings:

fig. 1 is a schematic top perspective view of a lock buckle box.

Fig. 2 is a schematic bottom perspective view of the lock buckle box.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic sectional view of the structure of fig. 3 taken along line D-D.

FIG. 5 is a schematic cross-sectional view of E-E in FIG. 3.

Fig. 6 is a schematic sectional structure view of F-F in fig. 3.

Fig. 7 is a schematic view of the three-dimensional structure of the inner core, the outer inclined mandril and the inner inclined mandril of the utility model.

Fig. 8 is a schematic diagram of the right-side perspective structure of the slide block, the guide pillar and the drag hook of the present invention.

Fig. 9 is a schematic left-view three-dimensional structure diagram of the slide block, the guide pillar and the drag hook of the present invention.

In the figure, 1, a lock buckle box, 2, an upper cavity, 3, a lower cavity, 4, a groove, 5, an upper die, 6, a lower die, 7, an inner core, 8, a forming cavity, 9, an upper die fixing plate, 10, an upper panel, 11, a positioning ring, 12, an injection molding port, 13, an inner inclined ejector rod, 14, an inner forming protrusion, 15, an outer inclined ejector rod, 16, a cross rod, 17, an outer forming protrusion, 18, a lower die fixing plate, 19, a connecting plate, 20, an ejector rod push plate, 21, an ejector rod bottom plate, 22, an ejector rod mounting plate, 23, a straight ejector rod, 24, a reset rod, 25, a reset spring, 26, a die leg, 27, a lower panel, 28, a mounting groove, 29, a sliding block, 30, a spring, 31, a pulling block, 32, a draw hook, 33, a guide pillar, 34, a guide groove, 35, an.

The specific implementation mode is as follows:

in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in fig. 3-9, an injection mold for a lock catch box comprises an upper mold 5, a lower mold 6 and a plurality of inner cores 7 arranged between the upper mold 5 and the lower mold 6, wherein a forming cavity 8 matched with the lock catch box in shape is formed between the inner cores 7 and the upper mold 5 and the lower mold 6, an upper mold fixing plate 9 is arranged at the top of the upper mold 5, an upper panel 10 is arranged at the top of the upper mold fixing plate 9, a positioning ring 11 is arranged in the middle of the upper panel 10, and an injection port 12 communicated with the forming cavity 8 through the upper mold fixing plate 9 and the upper mold 5 is arranged in; a plurality of sliding grooves are formed in the inner core 7 in the vertical direction, an inward-inclined ejector rod 13 which inclines inwards is respectively inserted into each sliding groove, an inner forming bulge 14 which is matched with the groove 4 in the inner wall of the lower cavity 3 is arranged on the outer surface of the top of the inner inclined ejector rod 13, outward-inclined ejector rods 15 which incline outwards are respectively arranged in the lower dies 6 on two sides of the inner core 7, a cross rod 16 which extends towards the inner core 7 is arranged at the top of each outward-inclined ejector rod 15, an outer forming bulge 17 which is matched with the groove 4 in the outer wall of the lower cavity 3 is arranged at the end of each cross rod 16, a lower die fixing plate 18 is arranged at the bottom of each lower die 6, and the bottoms of each inward-inclined ejector rod 13 and each outward-inclined ejector rod 15 downwards penetrate through the lower die fixing plate; the lock catch box is characterized in that an ejector rod bottom plate 21 and an ejector rod mounting plate 22 are arranged on the ejector rod push plate 20, a plurality of straight ejector rods 23 are mounted on the ejector rod mounting plate 22, the straight ejector rods 23 upwards penetrate through a connecting plate 19, a lower die fixing plate 18 and a lower die 6 and are used for upwards ejecting the formed lock catch box 1, a reset rod 24 and a reset spring 25 sleeved outside the reset rod 24 are arranged between the ejector rod mounting plate 22 and the lower die 6, die legs 26 are arranged at the bottom of the lower die fixing plate 18, and a lower panel 27 is arranged at the bottoms.

The two sides of the ejector rod push plate 20 are respectively provided with a mounting groove 28, a sliding block 29 is movably arranged in the mounting groove 28, a spring 30 is arranged between the sliding block 29 and the bottom of the mounting groove 28, the sliding block 29 can extend out of the mounting groove 28 under the action of the spring 30, a pull block 31 is arranged on the ejector rod bottom plate 21 corresponding to the sliding block 29, a pull hook 32 matched with the bottom of the sliding block 29 is arranged at the bottom of the pull block 31, a guide pillar 33 is vertically arranged on the lower die fixing plate 18, a guide groove 34 is formed in the guide pillar 33, the pull block 31 is slidably arranged in the guide groove 34, and inclined surfaces 35 matched with each other are respectively arranged on.

And a positioning column 36 is arranged on the inner core 7 and used for positioning with the lower die.

During injection molding, raw materials pass through an upper mold fixing plate 9 and an upper mold 5 from an injection molding opening 12 to enter a molding cavity 8, the inner shape of a lower cavity 3 of a lock buckle box 1 is molded through an inner core 7, a groove 4 on the inner wall of the lower cavity 3 is molded through an inner molding protrusion 14 on the outer surface of the top of an inner inclined ejector rod 13, a groove 4 on the outer wall of the lower cavity 3 is molded through an outer molding protrusion 17 on the end part of a cross rod 16 of an outer inclined ejector rod 15, inverted buckling structures are formed among the inner molding protrusion 14, the outer molding protrusion 17 and the groove 4, after products are molded for a period of time, the upper mold 5 and the upper mold fixing plate 9 are lifted upwards through an air cylinder, then an ejector rod bottom plate 21 is driven to move upwards through the air cylinder, under the action of a pulling block 31, the pulling block 31 drives a sliding block 29 and an ejector rod push plate 20 to move upwards through a pulling hook 32, and simultaneously pushes the inner inclined ejector rod 13 and the outer inclined ejector rod 15 to move, the inner inclined mandril 13 can continuously incline inwards in the upward moving process, so that the inner forming bulge 14 is separated from the groove 4 on the inner wall, the outer inclined mandril 16 can continuously incline outwards in the upward moving process, so that the outer forming bulge 17 is separated from the groove 4 on the outer wall, the back-off structure is separated, when the slide block 29 moves upwards, the inclined surface 35 of the slide block 29 is contacted with the inclined surface 35 on the side wall of the guide post 33, the slide block 29 can compress the spring 30 to be separated from the draw hook 32 of the pull block 31 and enter the installation groove 28, the whole mandril push plate 20 can not move upwards and fall back to the original position after the slide block 29 loses the pulling force, at the moment, the cylinder drives the mandril bottom plate 21 to continuously move upwards, the mandril bottom plate 21 drives the mandril installation plate 22 and a plurality of straight mandril 23 on the mandril installation plate 22 to push the formed lock buckle box 1 upwards, at the moment, and finishing the whole forming and demolding process.

The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (3)

1. The utility model provides a box injection mold is detained to tool to lock which characterized in that: the lock catch box comprises an upper die, a lower die and a plurality of inner cores arranged between the upper die and the lower die, wherein a forming cavity matched with the lock catch box in shape is formed between the inner cores and the upper die and the lower die; the inner core is provided with a plurality of sliding grooves along the vertical direction, each sliding groove is internally and respectively inserted with an inward-inclined ejector rod, the outer surface of the top of each inner-inclined ejector rod is provided with an inner forming bulge matched with the groove of the inner wall of the lower cavity, the lower dies on the two sides of the inner core are respectively provided with outward-inclined ejector rods, the tops of the outward-inclined ejector rods are provided with cross rods extending towards the inner core, the ends of the cross rods are provided with outer forming bulges matched with the grooves of the outer wall of the lower cavity, the bottom of the lower die is provided with a lower die fixing plate, and the bottoms of the inner-inclined ejector rods and the outward-inclined ejector rods both downwards penetrate through the lower die fixing plate and a connecting plate arranged at; the push rod push plate is provided with a push rod bottom plate and a push rod mounting plate, a plurality of straight push rods are mounted on the push rod mounting plate, the straight push rods upwards penetrate through the connecting plate, the lower die fixing plate and the lower die and are used for upwards ejecting the formed lock buckle box, a reset rod and a reset spring sleeved outside the reset rod are arranged between the push rod mounting plate and the lower die, the bottom of the lower die fixing plate is provided with die legs, and the bottom of the die legs is provided with a lower panel.

2. The lock catch box injection mold of claim 1, wherein: the two sides of the ejector rod push plate are respectively provided with a mounting groove, a sliding block is movably arranged in the mounting groove, a spring is arranged between the sliding block and the bottom of the mounting groove, the sliding block can extend out of the mounting groove under the action of the spring, a pull block is arranged on the ejector rod bottom plate corresponding to the position of the sliding block, a drag hook matched with the bottom of the sliding block is arranged at the bottom of the pull block, a guide pillar is vertically arranged on the lower die fixing plate, a guide groove is formed in the guide pillar, the pull block is slidably arranged in the guide groove, and inclined planes matched with.

3. The lock catch box injection mold of claim 1, wherein: and the inner core is provided with a positioning column for positioning with the lower die.

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