Precise injection mold with automatic stripping function

Abstract

The utility model discloses an automatic stripping precise injection mold, which is characterized in that a plurality of inner forming rods horizontally extending rightwards are mounted on a left mold base, a clamping plate is arranged on the right side of the left mold base, a stripping plate is mounted on the clamping plate, and the stripping plate is mounted on a horizontal track on which the clamping plate moves in the front-back direction; the front part and the rear part of the left die holder are respectively provided with a degerming guide rod which extends rightwards, and the degerming guide rod is provided with a track groove; a track plate extending outwards is installed on the outer side of the stripper plate, and the sliding end of the track plate is located in the track groove. Semicircular stripping cavities which are arranged in pairs are mounted on the stripping plate; the right mold base is provided with a fixing cavity which is opened towards the left side and is opposite to the inner forming rod, a cooling device is arranged in the right mold base and surrounds the fixing cavity, and a material injection opening used for feeding is formed in the rightmost end of the fixing cavity. According to the utility model, automatic batch production of products is realized, automatic and rapid mold closing, demolding and stripping are realized, the injection mold structure is high in precision, and the whole production process is efficient and energy-saving.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and in particular relates to a precision injection mold with automatic material removal. Background Art

[0002] Injection molds are used to produce plastic products. The molds have the characteristics of rapid manufacturing, short molding cycle, simple process, easy promotion, and low molding cost. However, for some small-sized and high-precision PET or PP products, the optimized design of the mold cavity combination structure and the structure of rapid and automatic stripping can meet the precision and specific functional requirements and achieve rapid and automatic production, thereby making the entire production process efficient and energy-saving. Utility Model Content

[0003] The utility model aims to solve the above problems and provide a precision injection mold with automatic material stripping, which can achieve rapid and automatic production while meeting the accuracy and specific functional requirements, making the entire production process efficient and energy-saving.

[0004] The utility model is realized by the following technical solutions:

[0005] A precision injection mold for automatic stripping, comprising a left mold base capable of horizontal movement on the left side and a right mold base fixed on the right side, the left mold base being provided with a plurality of inner molding rods extending horizontally to the right, the right side of the left mold base being provided with a clamping plate movable left and right relative to the left mold base, the clamping plate being provided with a stripping plate, the stripping plate being provided on a horizontal track that moves in the front-back direction of the clamping plate; the front and rear parts of the left mold base being provided with stripping guide rods extending rightward respectively, the stripping guide rods being provided with a track groove extending outward on the right side; a track plate extending outward is provided on the outer side of the stripping plate, the sliding end of the track plate being located in the track groove; the stripping plate is provided with semi-annular stripping rods arranged in pairs a stripping cavity; the right mold base is provided with a fixed cavity which is open to the left and opposite to the inner forming rod, a cooling device is provided around the fixed cavity in the right mold base, and an injection port for feeding is provided at the rightmost end of the fixed cavity; when the left mold base is pressed against the right mold base, the inner forming rod, the fixed cavity and the two stripping cavities form a closed mold cavity for product molding, wherein the stripping cavity is located on the periphery of the middle section of the inner forming rod and connects the inner forming rod and the fixed cavity; a plurality of inner grooves corresponding to the shape of the product are provided on the inner surface of the stripping cavity; when the track plate moves rightward along the track groove under the push of the splint, the stripping plate drives the stripping cavity to separate in the front-to-back direction.

[0006] Furthermore, the inner forming rods installed on the left mold base are distributed in a matrix shape, which is convenient for the stripping plate to strip the material.

[0007] Furthermore, the inner molded rod includes an inner cylindrical rod and a rod sleeve sleeved on the cylindrical rod, and a cavity is provided between the cylindrical rod and the rod sleeve to facilitate heat dissipation.

[0008] Furthermore, a step-shaped connecting portion is provided between the inner molding rod, the fixed cavity and the stripping cavity.

[0009] Furthermore, the exterior of the stripping cavity is an arc surface structure with a large outer diameter in the middle and gradually decreasing outer diameters toward the left and right ends, so that the clamping plate and the fixed cavity can press the stripping cavity from the outside.

[0010] The beneficial effects of the utility model are as follows: the automatic stripping precision injection mold designed by the utility model designs the inner molding rod, the fixed cavity and the stripping cavity according to the product characteristics, realizes the batch automatic production of products, and automatically and quickly closes the mold, strips the mold and strips the materials. The injection mold has a high structural precision, and the entire production process is efficient and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an internal cross-sectional structural diagram of the utility model in the horizontal plane direction.

[0012] Figure 2 for Figure 1 Enlarged view of the dashed line range.

[0013] In the figure, 1, left mold base, 2, right mold base, 3, stripping cavity, 11, inner molding rod, 12, clamping plate, 13, stripping plate, 14, track plate, 15, embryo stripping guide rod, 21, fixed cavity, 22, injection port, 23, cooling device, 31, inner groove, 151, track groove. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with specific examples and accompanying drawings.

[0015] like Figure 1 , Figure 2As shown, a precision injection mold for automatic stripping comprises a left mold base 1 which can move horizontally on the left side and a right mold base 2 which is fixed on the right side, the left mold base 1 is provided with inner molding rods 11 which are distributed in a matrix shape and extend horizontally to the right, the right side of the left mold base 1 is provided with a clamping plate 12 which moves left and right relative to the left mold base 1, the clamping plate 12 is provided with a stripping plate 13, and the stripping plate 13 is installed on a horizontal track which moves in the front and rear directions of the clamping plate 12; the front and rear parts of the left mold base 1 are respectively provided with stripping guide rods 15 which extend to the right, and the stripping guide rods 15 are provided with a track groove 151 which extends outward on the right side; the outer side of the stripping plate 13 is provided with a track plate 14 which extends outward, and the sliding end of the track plate 14 is located in the track groove 151; the stripping plate 13 is provided with semi-annular stripping cavities 3 which are arranged in pairs; The right mold base 2 is provided with a fixed cavity 21 which is open to the left and opposite to the inner molding rod 11, and a cooling device 23 is provided around the fixed cavity 21 in the right mold base 2, and a filling port 22 for feeding is provided at the rightmost end of the fixed cavity 21; when the left mold base 1 is pressed against the right mold base 2, the inner molding rod 11, the fixed cavity 21 and the two stripping cavities 3 form a closed mold cavity for product molding, wherein the stripping cavity 3 is located on the periphery of the middle section of the inner molding rod 11 and connects the inner molding rod 11 and the fixed cavity 21; a step-shaped connecting part is provided between the inner molding rod 11, the fixed cavity 21 and the stripping cavity 3, and the outside of the stripping cavity 3 is an arc surface structure with a large outer diameter in the middle and an outer diameter gradually decreasing toward the left and right ends, so that the clamping plate 12 and the fixed cavity 21 can press the stripping cavity 3 from the outside. The inner surface of the stripping cavity 3 is provided with a plurality of inner grooves 31 corresponding to the shape of the product; when the track plate 14 moves rightward along the track groove 151 under the push of the clamping plate 12, the stripping plate 13 drives the stripping cavity 3 to separate in the front-to-back direction.

[0016] The inner forming rod 11 includes an inner cylindrical rod and a rod sleeve sleeved on the cylindrical rod, and a cavity is provided between the cylindrical rod and the rod sleeve to facilitate heat dissipation and cooling for forming.

[0017] The automatic stripping precision injection mold designed by the utility model has the following working process in processing test tube products: Figure 1In the state shown, the left mold base 1 is pressed against the right mold base 2 fixed on the right side, and the inner molding rod 11, the fixed cavity 21 and the two stripping cavities 3 form a closed mold cavity for product molding, wherein the stripping cavity 3 is located at the periphery of the middle section of the inner molding rod 11 and connects the inner molding rod 11 and the fixed cavity 21; a step-shaped connecting part is provided between the inner molding rod 11, the fixed cavity 21 and the stripping cavity 3 to facilitate pressing to form a closed molding cavity, the inner molding rod 11 is used for molding the inner surface of the product, and the fixed cavity 21 and the stripping cavity 3 are used for molding the outer surface of the product. The liquid plastic enters the fixed cavity 21 from the injection port 22. After the cooling device 23 cools and molds the fixed cavity 21, the left mold base 1 drives the inner molding rod 11, the clamping plate 12, the stripping plate 13 and the stripping cavity 3 to move to the left as a whole and separate from the fixed cavity 21. Since the inner surface of the stripping cavity 3 is provided with an inner groove 31 corresponding to the shape of the product, the product is attached to the inner molding rod 11 and separated together. During the separation process, the product is further cooled. Then, the left mold base 1 stops moving, the clamping plate 12 moves to the right, and the track plate 14 moves to the right along the track groove 151 under the push of the clamping plate 12. The stripping plate 13 drives the stripping cavity 3 to separate in the front and back directions while moving to the right, and the product is pushed out from the inner molding rod 11 and falls. After that, the clamping plate 12 moves back to the left and is close to the left mold base 1. The track plate 14 moves to the left along the track groove 151 under the drive of the clamping plate 12, and the stripping plate 13 drives the stripping cavity 3 to hold tightly in the front and back directions while moving to the left. After that, the left mold base 1 moves to the right fixed right mold base 2 and returns to Figure 1 state, and so on is repeated. Therefore, the automatic stripping precision injection mold designed by the utility model makes the injection mold structure high in precision. According to the product characteristics, it can realize batch automatic production of products, automatic and fast mold closing, demoulding and stripping, and the whole production process is efficient and energy-saving.

[0018] The above embodiments are only preferred implementation modes of the present invention and are only used to explain the present invention rather than to limit the present invention. Any changes, substitutions, combinations, simplifications, modifications, etc. made by those skilled in the art without departing from the spirit and principle of the present invention shall be equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A precision injection mold with automatic stripping, comprising a left mold base that can move horizontally on the left side and a right mold base that is fixed on the right side, characterized in that: The left mold base is provided with a plurality of inner forming rods extending horizontally to the right, the right side of the left mold base is provided with a clamping plate which can move left and right relative to the left mold base, the clamping plate is provided with a stripping plate, and the stripping plate is provided on a horizontal track which can move in the front-rear direction of the clamping plate; the front and rear parts of the left mold base are respectively provided with stripping guide rods extending to the right, the stripping guide rods are provided with a track groove which runs outward to the right; a track plate extending outward is provided on the outer side of the stripping plate, and the sliding end of the track plate is located in the track groove; the stripping plate is provided with semi-annular stripping cavities arranged in pairs; the right mold base is provided with a stripping guide rod which opens to the left And a fixed cavity opposite to the inner forming rod, a cooling device is provided around the fixed cavity in the right mold base, and a filling port for feeding is provided at the rightmost end of the fixed cavity; when the left mold base is pressed against the right mold base, the inner forming rod, the fixed cavity and the two stripping cavities form a closed mold cavity for product molding, wherein the stripping cavity is located at the periphery of the middle section of the inner forming rod and connects the inner forming rod and the fixed cavity; a plurality of inner grooves corresponding to the shape of the product are provided on the inner surface of the stripping cavity; when the track plate moves to the right along the track groove under the push of the splint, the stripping plate drives the stripping cavity to separate in the front and rear directions.

2. The automatic stripping precision injection mold according to claim 1, characterized in that: The inner forming rods installed on the left mold base are distributed in a matrix shape.

3. The automatic stripping precision injection mold according to claim 1, characterized in that: The inner molded rod comprises an inner cylindrical rod and a rod sleeve sleeved on the cylindrical rod, and a cavity is present between the cylindrical rod and the rod sleeve.

4. The automatic stripping precision injection mold according to claim 1, characterized in that: A step-shaped connecting portion is provided between the inner forming rod, the fixed cavity and the stripping cavity.

5. The automatic stripping precision injection mold according to claim 1, characterized in that: The exterior of the stripping cavity is a curved surface structure with a large outer diameter in the middle and gradually decreasing outer diameters toward the left and right ends.

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