CN214448182U

CN214448182U - Improved injection mold

Info

Publication number: CN214448182U
Application number: CN202023093620.4U
Authority: CN
Inventors: 李荣洲; 谭沿河; 姚雅兰
Original assignee: Dongguan Jingcai Optics Co ltd
Current assignee: Dongguan Jingcai Optics Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-10-22
Anticipated expiration: 2030-12-21

Abstract

The utility model provides an improved injection mold, including last die structure and lower die structure, last die structure includes last die mounting panel, cope match-plate pattern, terrace die, lower die structure includes lower mould bottom plate, lower mould backing plate, die cavity, multistation die structure, lower mould backing plate pass through the bracing piece with lower mould bottom plate, the die cavity is installed the upper surface of lower mould backing plate, the activity of multistation die structure sets up on the die cavity, multistation die structure includes the bar plate body, the linear array of extension its length direction on the bar plate body is provided with a plurality of injection molding die cavities that correspond with the terrace die; the upper die structure is provided with a cooling structure, the inner cavity of the female die holder is provided with a liquid storage cavity, and a cold liquid supply structure and a liquid recovery structure which are connected with the liquid storage cavity and the cooling structure are respectively arranged on the lower die base plate; the utility model has the advantages that: the lifting cooling structure is arranged, so that the mould can have a good cooling function.

Description

Improved injection mold

Technical Field

The utility model relates to an injection mold technical field especially relates to an improvement type injection mold.

Background

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. In the prior art, in order to improve the production efficiency, a cooling and heat dissipation structure is generally arranged on the die, so that the cooling and heat dissipation speed of the die is increased, and the production time of a product is shortened. Therefore, various cooling structures can be provided for different types of mold structures. For a multi-cavity mold, an ideal cooling structure is not available for a while, and therefore improvement is urgently needed.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing an improvement type injection mold sets up liftable cooling structure to many die structures to ensure that the mould can have good cooling function.

The utility model provides an improved injection mold, which comprises an upper mold structure and a lower mold structure, wherein the upper mold structure and the lower mold structure are connected through a screw rod structure, the upper die structure is provided with a pouring gate and comprises an upper die mounting plate, an upper die plate and a male die, the upper die plate is arranged on the lower surface of the upper die mounting plate, the convex die is arranged on the lower surface of the upper die plate, the lower die structure comprises a lower die bottom plate, a lower die base plate, a die holder and a multi-station die structure, wherein the lower die base plate is connected with the lower die bottom plate through a support rod and forms an interval space, the female die holder is arranged on the upper surface of the lower die base plate, the multi-station female die structure is movably arranged on the female die holder through a driving structure, the multi-station female die structure comprises a strip-shaped plate body, wherein a plurality of injection molding cavities corresponding to the male die are arranged on the strip-shaped plate body in a linear array along the length direction of the strip-shaped plate body; the upper die structure is provided with a cooling structure, the inner cavity of the female die holder is provided with a liquid storage cavity, and a cold liquid supply structure and a liquid recovery structure which are connected with the liquid storage cavity and the cooling structure are respectively arranged on the lower die base plate; the cooling structure comprises a plurality of connecting rods and an annular liquid storage cavity corresponding to the outline of the male die, the upper die plate is provided with a spring accommodating groove in a penetrating mode, a spring is arranged in the spring accommodating groove, one end of the spring is connected with the upper die mounting plate, the other end of the spring is connected with the connecting rods, the connecting ends of the connecting rods and the spring extend into the spring accommodating groove, and the other end of the connecting rods is fixedly arranged on the upper surface of the annular liquid storage cavity; after the upper die structure and the lower die structure are assembled, the annular liquid storage cavity is abutted and contacted with the upper surface of the strip-shaped plate body, and at the moment, the spring is in a maximum compressed state; after the upper die structure and the lower die structure are opened, the annular liquid storage cavity is positioned below the male die, and at the moment, the spring is in a maximum opening state.

As a preferred scheme, the cold liquid providing structure comprises a cold liquid storage tank and a pump body, wherein the cold liquid storage tank is installed on the lower die base plate, the pump body is connected with the cold liquid storage tank, and the pump body is respectively connected with the water inlets of the liquid storage cavity and the annular liquid storage cavity through pipelines.

Preferably, the liquid recovery structure comprises a recovery tank and a pump body, the recovery tank is mounted on the lower die base plate and on the other side opposite to the cold liquid supply structure, the pump body is connected with the recovery tank, and the pump body is respectively connected with the liquid storage cavity and the water outlet of the annular liquid storage cavity through pipelines.

Preferably, the opposite two side surfaces of the die holder are respectively provided with a push-pull cylinder, the power output ends of the push-pull cylinders are respectively connected with a push-pull rod, and the opposite two side surfaces of the strip-shaped plate body are respectively and correspondingly provided with a positioning groove A for inserting the push-pull rod.

As a preferred scheme, the lower surface of the annular liquid storage cavity is provided with a plurality of positioning convex columns, and positioning grooves B for inserting the positioning convex columns are formed in the upper surface of the strip-shaped plate body and located between every two adjacent injection molding cavities.

As a preferred scheme, the screw rod structure includes screw rod driving motor, screw rod driving motor installs on the lower mould bottom plate, the one end of screw rod with screw rod driving motor's power take off end is connected, the other end of screw rod run through go up the mould mounting panel and with go up mould mounting panel swing joint.

As a preferred scheme, be provided with the jack-up structure on the lower mould bottom plate, the jack-up structure includes push rod, push pedal, fixed plate, many ejector pins, the push rod runs through the lower mould bottom plate with the push pedal is connected, the fixed plate is installed the upper surface of push pedal, many the one end of ejector pin runs through the fixed plate with push pedal fixed connection, each the free end of ejector pin all runs through in proper order lower mould backing plate, die cavity, the strip plate body is located the confession has all been seted up to the position of the die cavity of moulding plastics ejector pin male through-hole.

As a preferred scheme, an ejection structure is arranged at one end, positioned at the discharge port, of the lower die bottom plate, and the ejection structure comprises ejection cylinders, connecting rods, mounting seats and ejection columns corresponding to the number of the through holes in the injection molding cavity; the ejection cylinder is installed on the lower die bottom plate, one end of the connecting rod is connected with the installation seat, the other end of the connecting rod is connected with the power output end of the ejection cylinder, and the ejection columns are sequentially arranged on the installation seat in a linear array mode.

The utility model has the advantages that:

1. the cooling structure is driven by the upper die structure to realize up-and-down displacement, after the upper die structure and the lower die structure are assembled, the annular liquid storage cavity is abutted and contacted with the upper surface of the strip-shaped plate body, and after the injection molding action is finished, cooling liquid is injected into the cooling structure and the liquid storage cavity through the cold liquid supply structure, and meanwhile, the male die and the injection molding cavity are cooled through heat dissipation, so that the good cooling function of the die is ensured;

2. the opposite two side surfaces of the female die holder are respectively provided with a push-pull cylinder, the power output ends of the push-pull cylinders are respectively connected with a push-pull rod, the opposite two side surfaces of the strip-shaped plate body are respectively and correspondingly provided with a positioning groove A into which the push-pull rod is inserted, and after the strip-shaped plate body is driven to a set die closing position by the driving structure, the push-pull cylinders enable the push-pull rod to be inserted into the positioning groove A so as to realize positioning, ensure that the male die can accurately move to the position of the injection molding cavity, and improve the precision of injection molding action;

3. the lower surface in annular stock solution chamber is provided with many location projections, and the upper surface of bar plate body is located and all sets up between the two adjacent die cavities of moulding plastics and supplies location projection male constant head tank B, and during the compound die action, the location projection corresponds and inserts in the constant head tank B to ensure that annular stock solution chamber can accurate displacement to established position and cool off the action.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional view of the utility model in the mold opening state.

Fig. 4 is a sectional view of the present invention in a mold clamping state.

The reference signs are: the device comprises an upper die mounting plate 10, an upper die plate 11, an annular liquid storage cavity 12, an injection molding cavity 13, a positioning groove B14, a strip plate body 15, a screw driving motor 17, a screw 16, a lower die bottom plate 18, a lower die base plate 20, a die holder 19, a push rod 21, a push plate 22, a cold liquid storage box 23, a pump body 24, a pipeline 25, an ejection cylinder 26, a support rod 27, a mounting seat 28, a top column 29, a positioning groove A30, a push-pull cylinder 31, a connecting rod A32, a male die 33, a convex column 34, a fixing plate 35, a spring 36, a spring accommodating groove 37, a push rod 38, a connecting rod B39, a pouring gate 40, a recovery box 42, a liquid storage cavity 44 and a through hole 41.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Referring to fig. 1-4, an improved injection mold comprises an upper mold structure and a lower mold structure, wherein the upper mold structure and the lower mold structure are connected through a screw structure, the upper mold structure is provided with a sprue 40, the upper mold structure comprises an upper mold mounting plate 10, an upper mold plate 11 and a male mold 33, the upper mold plate 11 is mounted on the lower surface of the upper mold mounting plate 10, the male mold 33 is mounted on the lower surface of the upper mold plate 11, the lower mold structure comprises a lower mold base plate 18, a lower mold base plate 20, a female mold seat 19 and a multi-station female mold structure, the lower mold base plate 20 is connected with the lower mold base plate 18 through a support rod 27 and forms an interval space, the female mold seat 19 is mounted on the upper surface of the lower mold base plate 20, the multi-station female mold structure is movably arranged on the female mold seat 19 through a driving structure, and the driving structure can be a conveyor belt or a driving motor; the multi-station female die structure comprises a strip-shaped plate body 15, wherein a plurality of injection molding cavities 13 corresponding to the male die 33 are linearly arranged on the strip-shaped plate body 15 along the length direction of the strip-shaped plate body; the upper die structure is provided with a cooling structure, the inner cavity of the female die holder 19 is provided with a liquid storage cavity 44, and the lower die base plate 18 is respectively provided with a cold liquid providing structure and a liquid recycling structure which are connected with the liquid storage cavity 44 and the cooling structure; the cooling structure comprises a plurality of connecting rods A32 and an annular liquid storage cavity 12 corresponding to the outline of the male die 33, the upper die plate 11 is provided with a spring accommodating groove 37 in a penetrating manner, a spring 36 is arranged in the spring accommodating groove 37, one end of the spring 36 is connected with the upper die mounting plate 10, the other end of the spring 36 is connected with a connecting rod A32, the connecting end of the connecting rod A32 and the spring 36 extends into the spring accommodating groove 37, and the other end of the connecting rod A32 is fixedly arranged on the upper surface of the annular liquid storage cavity 12; after the upper die structure and the lower die structure are assembled, the annular liquid storage cavity 12 is abutted against the upper surface of the strip-shaped plate body 15, and the spring 36 is in a maximum compressed state; after the upper and lower die structures are opened, the annular liquid storage cavity 12 is located below the male die 33, and the spring 36 is in a maximum open state at this time.

The cold liquid supply structure comprises a cold liquid storage tank 23 and a pump body 24, wherein the cold liquid storage tank 23 is installed on the lower die base plate 18, the pump body 24 is connected with the cold liquid storage tank 23, and the pump body 24 is respectively connected with the liquid storage cavity 44 and the water inlet of the annular liquid storage cavity 12 through a pipeline 25.

The liquid recovery structure comprises a recovery tank 42 and a pump body 24, wherein the recovery tank 42 is installed on the lower die base plate 18 and is arranged on the other side opposite to the cold liquid supply structure, the pump body 24 is connected with the recovery tank 42, and the pump body 24 is respectively connected with a liquid storage cavity 44 and a water outlet of the annular liquid storage cavity 12 through a pipeline 25.

The opposite two side surfaces of the concave die holder 19 are respectively provided with a push-pull cylinder 31, the power output ends of the push-pull cylinders 31 are respectively connected with a push-pull rod, and the opposite two side surfaces of the strip-shaped plate body 15 are respectively and correspondingly provided with a positioning groove A30 for the insertion of the push-pull rod. After the bar plate 15 is driven to a predetermined position by the driving structure, the push-pull cylinder 31 outputs power to drive the push-pull rod to move in the direction of the bar plate 15 until the push-pull rod is inserted into the positioning groove a30, so that positioning is realized, the male die can be accurately moved to the position of the injection molding cavity, and the precision of injection molding action is improved.

The lower surface of annular stock solution chamber 12 is provided with many location projections 34, and the upper surface of bar plate body 15 and be located and all offer between two adjacent die cavity 13 of moulding plastics and supply location projection 34 male constant head tank B14. When the mold is closed, the positioning convex column is correspondingly inserted into the positioning groove B, so that the annular liquid storage cavity can be accurately displaced to a preset position for cooling.

The screw structure includes screw drive motor 17, screw rod 16, and screw drive motor 17 installs on lower mould bottom plate 18, and the one end of screw rod 16 is connected with screw drive motor 17's power take off end, and the other end of screw rod 16 runs through last mould mounting panel 10 and with last mould mounting panel 10 swing joint. When the mold closing action is required, the driving motor 17 drives the screw 16 to act, and the screw 16 drives the upper mold mounting plate 10, the upper mold plate 11 and the male mold 33 to move towards the lower mold structure until the male mold 33 is correspondingly embedded into the injection mold cavity 13 to complete the mold closing action. Through the structure arrangement, the upper die structure can be ensured to be capable of stably performing displacement action, so that the accuracy of die assembly is improved.

Be provided with the jack-up structure on the lower mould bottom plate 18, the jack-up structure includes push rod 38, push pedal 22, fixed plate 35, many ejector pins 21, push rod 38 runs through lower mould bottom plate 18 and is connected with push pedal 22, the upper surface at push pedal 22 is installed to fixed plate 35, fixed plate 35 and push pedal 22 fixed connection are run through to the one end of many ejector pins 21, the free end of each ejector pin 21 all runs through lower mould backing plate 20 in proper order, die cavity 19, the through-hole 41 that supplies ejector pin 21 male has all been seted up in the position that the strip plate body 15 is located injection molding cavity 13. After the injection molding action is completed, the push rod 38 synchronously drives the fixing plate 35 and the plurality of ejector rods 21 to move upwards through the push plate 22, the ejector rods 21 jack up the molded product in the injection molding cavity 13, so that the material removing action is completed, and then the push rod 38 synchronously drives the fixing plate 35 and the plurality of ejector rods 21 to reset to the initial position through the push plate 22 to prepare for the next material removing action.

An ejection structure is arranged at one end of the lower die bottom plate 18 positioned at the discharge port, and comprises ejection cylinders 26, connecting rods B39, a mounting seat 28 and ejection columns 29 with the number corresponding to that of through holes in the injection molding cavity 13; the ejection cylinder 26 is arranged on the lower die base plate 18, one end of the connecting rod B39 is connected with the mounting seat 28, the other end of the connecting rod B39 is connected with the power output end of the ejection cylinder 26, and the ejection columns 29 are sequentially arranged on the mounting seat 28 in a linear array. After the injection molding cavity 13 which finishes injection molding is moved to the upper part of the ejection structure, the ejection cylinder 26 drives the mounting seat 28 to ascend to a set position through the connecting rod B39, and the ejection column 29 ejects a molded product in the injection molding cavity 13 to a set height so as to allow a material taking structure to take materials; after the material-taking action is completed, the ejecting cylinder 26 drives the mounting seat 28 to return to the initial position through the connecting rod B39, so as to prepare for the next ejecting action.

The operating principle of the present embodiment is: the upper die structure moves towards the lower die structure to carry out die assembly, when the male die 33 is tightly embedded with the injection molding cavity 13 at the corresponding position on the strip-shaped plate body 15, the die assembly is finished, and at the moment, the annular liquid storage cavity 12 is abutted and contacted with the upper surface of the strip-shaped plate body 15; after the injection molding action is completed, the cold liquid providing structure simultaneously injects cooling liquid into the annular liquid storage cavity 12 and the liquid storage cavity 44, and in order to accelerate the heat dissipation speed, the liquid recycling structure pumps the cooling liquid heated in the annular liquid storage cavity 12 and the liquid storage cavity 44 back into the recycling box 42, and after the circulation operation is carried out for a set time, the structure is jacked up to jack up a molded product, so that the stripping action is formed; and the upper die structure and the lower die structure are opened, after the upper die structure is reset to the initial position, the driving structure enables the multi-station female die structure to move a station towards the direction of the discharge port, the injection molding cavity 13 to be used next is moved to the position corresponding to the male die 33, the station with the molded product is moved to the lower part of the ejection structure, the ejection structure ejects the molded product in the injection molding cavity 13 to the set height so as to allow the material taking structure to take the material, and the operation is repeated.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an improvement type injection mold, includes mould structure and lower mould structure, go up the mould structure with lower mould structure passes through screw rod structural connection, it is provided with runner (40) to go up the mould structure, it includes mould mounting panel (10), cope match-plate pattern (11), terrace die (33) to go up the mould structure, install cope match-plate pattern (11) the lower surface of mould mounting panel (10), install terrace die (33) the lower surface of cope match-plate pattern (11), its characterized in that: the lower die structure comprises a lower die base plate (18), a lower die base plate (20), a die holder (19) and a multi-station die structure, wherein the lower die base plate (20) is connected with the lower die base plate (18) through a support rod (27) and forms an interval space, the die holder (19) is installed on the upper surface of the lower die base plate (20), the multi-station die structure is movably arranged on the die holder (19) through a driving structure, the multi-station die structure comprises a strip-shaped plate body (15), and a plurality of injection molding cavities (13) corresponding to the male die (33) are arranged on the strip-shaped plate body (15) in a linear array along the length direction of the strip-shaped plate body; the upper die structure is provided with a cooling structure, the inner cavity of the die holder (19) is provided with a liquid storage cavity (44), and the lower die base plate (18) is respectively provided with a cold liquid supply structure and a liquid recovery structure which are connected with the liquid storage cavity (44) and the cooling structure; the cooling structure comprises a plurality of connecting rods A (32) and an annular liquid storage cavity (12) corresponding to the outer contour of the male die (33), a spring accommodating groove (37) penetrates through the upper die plate (11), a spring (36) is arranged in the spring accommodating groove (37), one end of the spring (36) is connected with the upper die mounting plate (10), the other end of the spring (36) is connected with the connecting rods A (32), the connecting end of the connecting rods A (32) and the spring (36) extends into the spring accommodating groove (37), and the other end of the connecting rods A (32) is fixedly arranged on the upper surface of the annular liquid storage cavity (12); after the upper die structure and the lower die structure are assembled, the annular liquid storage cavity (12) is abutted to the upper surface of the strip-shaped plate body (15), and at the moment, the spring (36) is in a maximum compressed state; after the upper die structure and the lower die structure are opened, the annular liquid storage cavity (12) is located below the male die (33), and at the moment, the spring (36) is in a maximum opening state.

2. An improved injection mold as claimed in claim 1, characterized in that: the cold liquid provides the structure and includes cold liquid reserve tank (23), the pump body (24), cold liquid reserve tank (23) are installed on lower mould bottom plate (18), the pump body (24) with cold liquid reserve tank (23) are connected, pump body (24) pass through pipeline (25) respectively with the water inlet of stock solution chamber (44), annular stock solution chamber (12) is connected.

3. An improved injection mold as claimed in claim 2, characterized in that: the liquid recovery structure includes collection box (42), pump body (24), collection box (42) are installed on lower mould bottom plate (18) and with cold liquid provides the opposite side that the structure is relative, pump body (24) with collection box (42) are connected, pump body (24) pass through pipeline (25) respectively with the delivery port of stock solution chamber (44), annular stock solution chamber (12) is connected.

4. An improved injection mold as claimed in claim 1, characterized in that: the opposite two side surfaces of the female die holder (19) are respectively provided with a push-pull cylinder (31), the power output ends of the push-pull cylinders (31) are respectively connected with a push-pull rod, and the opposite two side surfaces of the strip-shaped plate body (15) are respectively and correspondingly provided with a positioning groove A (30) for the push-pull rod to be inserted into.

5. An improved injection mold as claimed in claim 1, characterized in that: the lower surface of annular stock solution chamber (12) is provided with many location convex columns (34), the upper surface of bar plate body (15) and be located adjacent two all offer the confession between moulding plastics die cavity (13) location convex column (34) male constant head tank B (14).

6. An improved injection mold as claimed in claim 1, characterized in that: the screw rod structure includes screw rod driving motor (17), screw rod (16), install screw rod driving motor (17) on lower mould bottom plate (18), the one end of screw rod (16) with the power take off end of screw rod driving motor (17) is connected, the other end of screw rod (16) runs through go up mould mounting panel (10) and with go up mould mounting panel (10) swing joint.

7. An improved injection mold as claimed in claim 1, characterized in that: be provided with the jack-up structure on lower mould bottom plate (18), the jack-up structure includes push rod (38), push pedal (22), fixed plate (35), many ejector pins (21), push rod (38) run through lower mould bottom plate (18) with push pedal (22) are connected, install fixed plate (35) the upper surface of push pedal (22), many the one end of ejector pin (21) is run through fixed plate (35) with push pedal (22) fixed connection, each the free end of ejector pin (21) all runs through in proper order lower mould backing plate (20), die cavity (19), bar plate body (15) are located the confession has all been seted up to the position of the die cavity of moulding plastics (13) ejector pin (21) male through-hole.

8. An improved injection mold as defined in claim 7, wherein: one end, positioned at the discharge port, of the lower die bottom plate (18) is provided with an ejection structure, and the ejection structure comprises ejection cylinders (26), connecting rods B (39), a mounting seat (28) and ejection columns (29) with the number corresponding to that of through holes in the injection molding cavity (13); the ejection cylinder (26) is installed on the lower die bottom plate (18), one end of the connecting rod B (39) is connected with the installation seat (28), the other end of the connecting rod B (39) is connected with the power output end of the ejection cylinder (26), and the ejection columns (29) are sequentially arranged on the installation seat (28) in a linear array mode.