Lunch box injection mold easy to assemble

Abstract

The lunch box injection mold comprises a top plate, an upper plate, an upper injection mold body and a lower injection mold body which are sequentially arranged from top to bottom, a plurality of longitudinal guide positioning strips are installed on the front outer side and the rear outer side of the top of the top plate respectively, and a clamping groove is formed in the bottom of each guide positioning strip. Clamping blocks corresponding to the clamping grooves are slidably connected to the front outer side and the rear outer side of the lower injection mold, a first inclined face is arranged on the outer side of the bottom of the guide positioning strip, a second inclined face corresponding to the first inclined face is arranged on the inner side of the top of each clamping block, and the clamping blocks are connected with connecting rods slidably connected with the lower injection mold front and back. The outer side of the connecting rod is sleeved with a spring abutting against the clamping block. The lunch box injection mold is simple in structure, low in production cost and accurate in alignment, position deviation is not prone to occurring during injection molding, the shape and size deviation of an injection molded lunch box is extremely small, the injection molding requirement of thin lunch boxes is met, the injection molding quality of the lunch boxes is improved, and batch production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a lunch box which is easy to assemble. Background Art

[0002] Injection molding is also called injection molding, which is a molding method of injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into parts with complex shapes. Injection molding is suitable for mass production and molding processing fields such as complex-shaped products. The injection mold refers to the mold used in injection molding, which generally has two upper molds and lower molds that can be docked with each other. After the upper and lower molds are docked, the shaping liquid is injected from the pouring port, and the injection molded product can be obtained after it is cooled and demoulded. However, during the installation process of the traditional lunch box injection mold, when the upper mold and the lower mold are assembled, the upper and lower molds are not accurately aligned, and the upper and lower molds are easily affected by the effects of thermal expansion and contraction during the injection molding process, and position deviations are prone to occur, resulting in deviations in the shape and size of the injection molded lunch box, which cannot meet the injection molding requirements of the lunch box with a relatively thin thickness, and affects the injection molding quality of the lunch box. Therefore, in order to avoid the shortcomings existing in the prior art, it is necessary to improve the prior art. Utility Model Content

[0003] The utility model aims to overcome the shortcomings and deficiencies in the prior art and to provide a lunch box injection mold which has the advantages of accurate assembly, stable injection molding and simple assembly.

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

[0005] A lunch box injection mold with simple assembly comprises a top plate, an upper plate, an upper injection mold and a lower injection mold which are arranged in sequence from top to bottom, a plurality of longitudinal guide and positioning strips are installed on the front and rear outer sides of the top of the top plate, the guide and positioning strips pass through the upper plate and the upper injection mold and extend to the lower injection mold, a card slot is provided at the bottom of the guide and positioning strip, a card block corresponding to the card slot is slidably connected to the front and rear outer sides of the lower injection mold, a first inclined surface is provided at the outer side of the bottom of the guide and positioning strip, a second inclined surface corresponding to the first inclined surface is provided at the inner side of the top of the card block, the card block is slidably connected to the lower injection mold front and back, the card block is connected to a connecting rod slidably connected to the lower injection mold front and back, a spring is sleeved on the outer side of the connecting rod to resist the card block, one end of the spring resists the card block, the other end of the spring resists the lower injection mold, and a blocking piece resisting the lower injection mold is connected to the outer end of the connecting rod.

[0006] Furthermore, the upper plate and the upper injection mold are both provided with through holes for the guide and positioning strip to pass through.

[0007] Furthermore, the lower injection mold is provided with a sleeve hole for the guide positioning strip to pass through, and the top of the sleeve hole is provided with a guiding inclined surface corresponding to the first inclined surface.

[0008] Furthermore, a supporting block is provided above the blocking piece, and the supporting block is rotatably connected to the lower injection mold.

[0009] Furthermore, the connecting rod is connected to a handle.

[0010] Furthermore, an anti-slip groove is provided on the outer side of the handle.

[0011] Furthermore, the connecting rod is screwed to the clamping block.

[0012] Furthermore, an upper molding die is installed at the bottom of the upper injection mold.

[0013] Furthermore, a lower injection mold base is installed on the top of the lower injection mold, and a lower molding mold is installed on the lower injection mold base.

[0014] Furthermore, the top plate, upper plate, upper injection mold and lower injection mold are all provided with corresponding guide post holes.

[0015] Compared with the prior art, the utility model is provided with a card slot at the bottom of the guide positioning strip, and the front and rear outer sides of the lower injection mold are slidably connected with a card block corresponding to the card slot, the outer side of the bottom of the guide positioning strip is provided with a first inclined surface, and the inner side of the top of the card block is provided with a second inclined surface corresponding to the first inclined surface, and the card block is connected with a connecting rod connected to the front and rear sliding connection of the lower injection mold, and the outer side of the connecting rod is provided with a spring that resists the card block, and the outer end of the connecting rod is connected with a blocking piece that resists the lower injection mold, so that the molding mold of the lunch box injection mold is easy to assemble, and the guide positioning strip plays a role in accurately guiding when the upper and lower molds are closed. The function of alignment is accurate, and position deviation is not easy to occur, which saves assembly time. After the mold is closed, the card block automatically presses against the guide positioning strip to prevent the upper and lower molds from loosening. When the upper and lower molds are affected by thermal expansion and contraction during the injection molding process, position deviation is not easy to occur. The shape and size deviation of the injection molded lunch box is extremely small, which meets the injection molding requirements of lunch boxes with relatively thin thickness and improves the injection molding quality of the lunch box. After the injection molding is completed and cooled, the connecting rod is pulled to pull the card block away from the card slot of the guide positioning strip to demould. At the same time, the structure of the entire lunch box injection mold is simple, the production cost is low, and it is conducive to mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural schematic diagram of a lunch box injection mold that is easy to assemble according to the utility model;

[0018] Figure 2 The utility model is a structural exploded view of a lunch box injection mold that is easy to assemble.

[0019] In the figure: 1-top plate; 2-upper plate; 3-upper injection mold; 4-lower injection mold; 5-guide positioning strip; 6-slot; 7-block; 8-first inclined plane; 9-second inclined plane; 10-connecting rod; 11-spring; 12-blocking piece; 13-through hole; 14-sleeve hole; 15-guide inclined plane; 16-rest block; 17-handle; 18-anti-slip groove; 19-lower injection mold base; 20-lower molding mold; 21-guide column hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 and Figure 2The utility model is shown as a lunch box injection mold with simple assembly, comprising a top plate 1, an upper plate 2, an upper injection mold 3 and a lower injection mold 4 which are arranged in sequence from top to bottom. A plurality of longitudinal guide and positioning strips 5 are installed on the front and rear outer sides of the top of the top plate 1. The guide and positioning strips 5 pass through the upper plate 2 and the upper injection mold 3 and extend to the lower injection mold 4. A card slot 6 is provided at the bottom of the guide and positioning strip 5. A card block 7 corresponding to the card slot 6 is slidably connected to the front and rear outer sides of the lower injection mold 4. A first inclined surface 8 is provided on the outer side of the bottom of the guide and positioning strip 5. A second inclined surface 9 corresponding to the first inclined surface 8 is provided on the inner side of the top of the card block 7. The card block 7 is slidably connected to the lower injection mold 4 front and back. The card block 7 is connected to a connecting rod 10 which is slidably connected to the lower injection mold 4 front and back. A spring 11 is sleeved on the outer side of the connecting rod 10 to resist the card block 7. One end of the spring 11 resists the card block 7, and the other end of the spring 11 resists the lower injection mold 4. A baffle 12 is connected to the outer end of the connecting rod 10 to resist the lower injection mold 4. A card slot 6 is provided at the bottom of the guide positioning strip 5, and a card block 7 corresponding to the card slot 6 is slidably connected to the front and rear outer sides of the lower injection mold 4. A first inclined surface 8 is provided on the outer side of the bottom of the guide positioning strip 5, and a second inclined surface 9 corresponding to the first inclined surface 8 is provided on the inner side of the top of the card block 7. The card block 7 is connected to a connecting rod 10 slidably connected to the lower injection mold 4 front and back. A spring 11 is sleeved on the outer side of the connecting rod 10 to resist the card block 7. A baffle 12 is connected to the outer end of the connecting rod 10 to resist the lower injection mold 4, so that the molding mold of the lunch box injection mold is easy to assemble, and the guide positioning strip 5 plays a role in the upper and lower molds when the upper and lower molds are closed. The precise guiding and positioning function makes the positioning precise and prevents position deviation from occurring easily, thus saving assembly time. After the mold is closed, the clamping block 7 automatically presses against the guide positioning strip 5 to prevent the upper and lower molds from loosening. When the upper and lower molds are subjected to the effects of thermal expansion and contraction during the injection molding process, position deviation is not likely to occur. The shape and size deviation of the molded lunch box are extremely small, thus meeting the injection molding requirements of lunch boxes with relatively thin thickness and improving the injection molding quality of the lunch box. After the injection molding is completed and cooled, the connecting rod 10 is pulled to pull the clamping block 7 away from the clamping groove 6 of the guide positioning strip 5 for demoulding. At the same time, the structure of the entire lunch box injection mold is simple, the production cost is low, and it is conducive to mass production.

[0022] The upper plate 2 and the upper injection mold 3 are both provided with through holes 13 for the guide and positioning strip 5 to pass through, so that the guide and positioning strip 5 can be installed more firmly and guided more stably.

[0023] The lower injection mold 4 is provided with a sleeve hole 14 for the guide positioning strip 5 to pass through, and the top of the sleeve hole 14 is provided with a guide inclined surface 15 corresponding to the first inclined surface 8, so that the guidance is smoother and the mold closing is more accurate when the upper and lower molds are closed.

[0024] A supporting block 16 is provided above the baffle 12, and the supporting block 16 is rotatably connected to the lower injection mold 4. When demolding is required, the connecting rod 10 is pulled to pull the block 7 away from the slot 6 of the guide positioning strip 5, and at the same time, the supporting block 16 is rotated to support the baffle 12 to prevent the block 7 from entering the slot 6 of the guide positioning strip 5 and affecting demolding.

[0025] The connecting rod 10 is connected to a handle 17 for conveniently pulling the connecting rod 10 .

[0026] The outer side of the handle 17 is provided with an anti-skid groove 18 to play an anti-skid role and make the pulling operation of the handle 17 more stable.

[0027] The connecting rod 10 is screwed to the clamping block 7 , which facilitates the installation of the clamping block 7 and facilitates the quick and firm connection between the clamping block 7 and the connecting rod 10 .

[0028] An upper molding die is installed at the bottom of the upper injection mold 3 to facilitate maintenance and replacement of the upper molding die.

[0029] A lower injection mold base 19 is installed on the top of the lower injection mold 4 , and a lower molding mold 20 is installed on the lower injection mold base 19 , which facilitates the maintenance and replacement of the lower molding mold 20 .

[0030] The top plate 1, the upper plate 2, the upper injection mold 3 and the lower injection mold 4 are all provided with corresponding guide post holes 21, and the guide posts are used for guiding to improve the stability of mold clamping.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lunch box injection mold with simple assembly, characterized by: The invention comprises a top plate, an upper plate, an upper injection mold and a lower injection mold which are arranged in sequence from top to bottom, wherein a plurality of longitudinal guide and positioning strips are installed on the front and rear outer sides of the top of the top plate, the guide and positioning strips pass through the upper plate and the upper injection mold and extend to the lower injection mold, a clamping slot is provided at the bottom of the guide and positioning strip, the front and rear outer sides of the lower injection mold are slidably connected with a clamping block corresponding to the clamping slot, a first inclined surface is provided on the outer side of the bottom of the guide and positioning strip, a second inclined surface corresponding to the first inclined surface is provided on the inner side of the top of the clamping block, the clamping block is slidably connected with the lower injection mold front and back, the clamping block is connected with a connecting rod slidably connected with the lower injection mold front and back, a spring is provided on the outer side of the connecting rod to resist the clamping block, one end of the spring resists the clamping block, the other end of the spring resists the lower injection mold, and a baffle that resists the lower injection mold is connected to the outer end of the connecting rod.

2. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: The upper plate and the upper injection mold are both provided with through holes for the guide and positioning strip to pass through.

3. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: The lower injection mold is provided with a sleeve hole for the guide positioning strip to pass through, and the top of the sleeve hole is provided with a guiding inclined surface corresponding to the first inclined surface.

4. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: A supporting block is arranged above the blocking piece, and the supporting block is rotatably connected with the lower injection mold.

5. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: The connecting rod is connected with a handle.

6. The easy-to-assemble lunch box injection mold according to claim 5, characterized in that: An anti-slip groove is arranged on the outer side of the handle.

7. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: The connecting rod is screwed to the clamping block.

8. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: An upper molding die is installed at the bottom of the upper injection mold.

9. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: A lower injection mold seat is installed on the top of the lower injection mold, and a lower molding mold is installed on the lower injection mold seat.

10. The easy-to-assemble lunch box injection mold according to claim 1, characterized in that: The top plate, the upper plate, the upper injection mold and the lower injection mold are all provided with corresponding guide post holes.

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