Automatic material head taking-out mechanism of plastic double-color forming machine

Abstract

The utility model relates to an automatic material head taking-out mechanism for a plastic double-color forming machine, in particular to an automatic material head taking-out mechanism for a plastic double-color forming machine. Comprising a plurality of parallel machine tables, a lower die is arranged on each machine table, an upper die A and an upper die B which are perpendicular to each other by 90 degrees are arranged above the lower dies, the upper die A and the upper die B can rotate by 90 degrees under the driving of a rotating shaft, two concave die cavities are symmetrically formed in each lower die, two protruding shoe blanks are symmetrically arranged on each upper die A and each upper die B respectively, and the upper die A and the lower die B are arranged on the upper die A and the lower die B respectively. Glue injection runners are arranged on the contact surfaces between the two protruding shoe blanks of the upper mold A and the upper mold B and between the two mold cavities of the lower mold respectively, and a hopper platform which is provided with a double-color hopper and can move along a track parallel to the multiple machine tables is arranged behind the multiple parallel machine tables. Each machine table is provided with an automatic material taking device, a groove is formed in the portion, between the two mold cavities, of the glue injection runner of the lower mold, and protrusions matched with the grooves are arranged at the positions, corresponding to the grooves, of the glue injection runner of the portion, between the two protruding shoe blanks, of the upper mold B.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an automatic material head removing mechanism for a plastic two-color molding machine. Background Art

[0002] With the continuous innovation of new materials and new technologies for plastic products, the rubber shoes people wear on their feet have developed from the original single rain shoes and tourist shoes to various functional shoes such as running shoes, hiking shoes, sports shoes, and casual shoes. Soles made of various different rubber materials endow the shoes with different characteristics and shapes.

[0003] Two-color soles are widely used in the soles of rubber shoes. As the name implies, due to requirements such as the wear resistance and anti-slip properties of the soles, two-color soles are made of two different colors or materials of rubber compounds through two upper molds on a lower mold in a two-color molding machine for injection molding twice (as shown in the attached... Figure 1 、 2 ). There is a lower mold 2 on the machine table 1 of the two-color molding machine. Above the lower mold 2, there are an A upper mold 3 and a B upper mold 4 that are perpendicular to each other at 90°. Driven by a rotating shaft 5, the A upper mold 3 and the B upper mold 4 can rotate by 90°. That is, when the A upper mold 3 moves downward to the upper part of the lower mold 2, the shoe blanks 31 protruding on the A upper mold 3 are pressed into the set positions in the mold cavities 21 of the lower mold 2. Injection channels are respectively arranged on the contact surfaces between the two protruding shoe blanks 31 on the A upper mold 3 and the two mold cavities 21 on the lower mold 2. The external injection machine injects the rubber compound into the cavity formed by the protruding shoe blanks 31 on the A upper mold 3 and the mold cavities 21 of the lower mold 2 through the injection ports at their edges and the injection channels. After the rubber compound to be molded cools to the set temperature, the A upper mold 3 moves upward to a predetermined position; the rotating shaft 5 rotates, and the B upper mold 4 rotates counterclockwise by 90°. The B upper mold 4 rotates until the protruding shoe blank 41 faces the mold cavity 21 of the lower mold 2, and the same actions as those of the above-mentioned A upper mold 3 are repeated. The difference is that another kind of rubber compound is injected after reaching the position; at the same time, the A upper mold 3 rotates synchronously by 90°, and the protruding shoe blank 31 on the A upper mold 3 rotates to face the operator. The operator can easily remove the material head T from the surface of the injection channel of the A upper mold 3 to facilitate the next cycle of processing of the A upper mold 3; similarly, after the B upper mold 4 finishes processing, the rotating shaft 5 rotates clockwise, so that the protruding shoe blank 41 on the B upper mold 4 rotates to the other side of the machine table 1. If the material head T on the surface of the injection channel of the B upper mold 4 is to be removed, the operator must bypass the machine table 1 to the other side to remove the material head T on the surface of the injection channel of the B upper mold 4, or another operator is equipped on the other side of the machine table 1 for operation. This is a time-consuming, laborious, and difficult-to-solve practical problem for manufacturers. Summary of the Invention

[0004] The purpose of the present utility model is to overcome the defects of the prior art and provide an automatic material head removal mechanism for a plastic two-color molding machine.

[0005] The present utility model adopts the following technical solutions:

[0006] The automatic material head removal mechanism for a plastic two-color molding machine includes multiple parallel machine platforms. Each machine platform is provided with a lower mold. Above the lower mold, there are an A upper mold and a B upper mold that are perpendicular to each other at 90°. Driven by a rotating shaft, the A upper mold and the B upper mold can rotate by 90°. Two concave mold cavities are symmetrically arranged on the lower mold. Two protruding shoe blanks are symmetrically arranged on the A upper mold and the B upper mold respectively. Injection channels are respectively arranged on the contact surfaces between the two protruding shoe blanks of the A upper mold and the B upper mold and the two mold cavities of the lower mold. Behind the multiple parallel machine platforms, there is a hopper platform with a two-color hopper and can move along a track parallel to the multiple machine platforms; Each machine platform is also provided with an automatic material taking device. A groove is arranged on the injection channel between the two mold cavities of the lower mold, and a protruding part that coincides with the groove is arranged at a corresponding position on the injection channel between the two protruding shoe blanks of the B upper mold;

[0007] The automatic material taking device is composed of a fixed seat, a moving seat, a lifting cylinder, a fixed bracket and a chuck. The fixed seat is fixed on the machine platform. The moving seat is movably arranged on the fixed seat through a horizontal cylinder. The cylinder body of the lifting cylinder is fixed on the outside of the fixed bracket. The chuck is fixed at the free end of the lifting cylinder. A pneumatic clamping piece is arranged at the front end of the chuck;

[0008] There are two chucks, one on top and one at the bottom, and each chuck is provided with a clamping piece;

[0009] There are two grooves between the two mold cavities of the lower mold, and protruding parts that coincide with the grooves are arranged at corresponding positions between the two protruding shoe blanks of the B upper mold;

[0010] The two material head bumps on the material head on the surface of the injection channel formed by the groove and the protruding part during the injection process correspond to the clamping pieces on the two chucks.

[0011] Without making any changes to the original machine platform, the present utility model only installs an automatic material taking device at the rear of the machine platform and cooperates with some modifications to the original B upper mold and lower mold, so that there are material head bumps on the formed material head that can be grabbed by the clamping pieces of the automatic material taking device, thereby achieving the purpose of automatically discharging the material head at the rear of the machine platform during the production process. Description of the Drawings

[0012] Attached Figure 1 is a structural schematic diagram of the prior art;

[0013] Attached Figure 2 is a three-dimensional view of the material head in the prior art;

[0014] Attached Figure 3 A stereogram for use in combination with the utility model;

[0015] Attached Figure 4 This is another three-dimensional diagram of the present invention in a display state;

[0016] Attached Figure 5 For attachment Figure 3 A is the enlarged picture;

[0017] Attached Figure 6 It is a three-dimensional diagram of the utility model;

[0018] Attached Figure 7 It is a three-dimensional diagram of the automatic material taking device;

[0019] Attached Figure 8 For attachment Figure 6 The enlarged view of point B;

[0020] Attached Figure 9 This is a three-dimensional image of the material head after the upper and lower molds are modified. DETAILED DESCRIPTION

[0021] See attached Figures 3 to 9 The automatic material removal mechanism of the plastic two-color molding machine includes a plurality of parallel machines 1, each machine 1 is provided with a lower mold 2, and an upper mold A 3 and an upper mold B 4 are provided above the lower mold 2, which are perpendicular to each other by 90 degrees. The upper mold A 3 and the upper mold B 4 can rotate 90 degrees under the drive of a rotating shaft 5, and the lower mold 2 is symmetrically provided with two concave mold cavities 21, and the upper mold A 3 and the upper mold B 4 are symmetrically provided with two protruding shoe blanks 31 and 41, respectively. The contact surface between the middle and the two mold cavities 21 of the lower mold 2 is respectively provided with a glue injection flow channel, and a hopper platform 6 with a two-color hopper 61 and movable along a track 62 parallel to the multiple machines 1 is arranged behind the multiple parallel machines 1; it also includes an automatic material taking device 7 on each machine 1, a groove 22 is provided on the glue injection flow channel between the two mold cavities 21 of the lower mold 2, and a protrusion 42 corresponding to the position of the groove 22 is provided on the glue injection flow channel between the two protruding shoe blanks 41 of the upper mold 4;

[0022] The automatic material taking device 7 is composed of a fixed seat 71, a movable seat 72, a lifting cylinder 73, a fixed bracket 74 and a chuck 75. The fixed seat 71 is fixed on the machine platform 1, the movable seat 72 moves on the slide rail 711 of the fixed seat 71, the cylinder body of the lifting cylinder 73 is fixed on the outer side of the fixed bracket 74, the chuck 75 is fixed on the free end of the lifting cylinder 73, and the front end of the chuck 75 is provided with a pneumatic clamping piece 751;

[0023] The clamping heads 75 are two, one above the other, and each clamping head 75 is provided with a clamping piece 751;

[0024] There are two grooves 22 in the middle of the two mold cavities 21 of the lower mold 2. At the positions corresponding to the grooves 22 between the two raised shoe blanks 41 of the upper mold 4B, there are matching protrusions 42;

[0025] The two material head bumps T1 on the material head T on the surface of the injection channel formed by the groove 22 and the protrusion 41 during the injection process correspond to the positions of the clamping pieces 751 on the two chucks 75.

[0026] When the present utility model is applied, when the upper mold 3A moves downward to the upper part of the lower mold 2, the raised shoe blank 31 on the upper mold 3A is pressed into the set position in the mold cavity 21 of the lower mold 2. Injection channels are respectively provided on the contact surfaces between the two raised shoe blanks 31 of the upper mold 3A and the two mold cavities 21 of the lower mold 2. At this time, the hopper platform 6 drives one of the hoppers 61 in the two-color hopper 61 to the injection port at the edge of the upper mold 3A and the lower mold 2 along the track 62 parallel to the multi-station machine 1, for injection, and the injection is carried out through the injection channel into the cavity formed by the raised shoe blank 31 on the upper mold 3A and the mold cavity 21 of the lower mold 2. After the rubber material to be molded cools to the set temperature, the upper mold 3A moves upward to the predetermined position;

[0027] When the rubber material in the raised shoe blank 31 on the upper mold 3A and the mold cavity 21 of the lower mold 2 cools, the hopper platform 6 drives the other hopper 61 in the two-color hopper 61 to the injection port at the edge of the upper mold 4B and the lower mold 2 along the track 62 parallel to the multi-station machine 1;

[0028] The rotating shaft 5 rotates, and the upper die B 4 rotates counterclockwise by 90°. The upper die B 4 rotates until the upwardly protruding shoe blank 41 faces the cavity 21 of the lower die 2. The protrusion 42 corresponding to the groove 22 of the lower die 2 between the two protruding shoe blanks 41 of the upper die B 4 extends into the groove 22, and another type of rubber material is injected. The injected rubber material is injected into the cavity formed by the upwardly protruding shoe blank 31 of the upper die B 4 and the cavity 21 of the lower die 2 through the injection runner. When the rubber material to be molded cools to the set temperature, the rotating shaft 5 rotates clockwise, causing the upwardly protruding shoe blank 41 on the upper die B 4 to rotate to the other side of the machine table 1. At this time, since the protrusion 42 in the middle of the shoe blank 41 and the groove 22 of the lower die 2 form a sprue bump T1 on the sprue T, and the entire sprue T faces the automatic material taking device 7, the moving seat 72 is respectively started to move on the slide rail 711 of the fixed seat 71, and the position of the fixed bracket 74 away from or close to the machine table 1 is adjusted. The lifting cylinder 73 is started to adjust the upper and lower positions of the chuck 75. Since the positions of the clamping pieces 751 on the two chucks 75 correspond to the two sprue bumps T1 on the sprue T, the pneumatic clamping pieces 751 on the two chucks 75 respectively clamp the sprue bumps T1 on the sprue T. The moving seat 72 is started to move away from the machine table 1 on the slide rail 711 of the fixed seat 71, and also synchronously drives the clamping piece 751 to move away from the machine table 1, so as to remove the sprue T from the protrusion 42 between the two protruding shoe blanks 41 of the upper die B 4, achieving the purpose of automatic blanking.

Claims

1. The automatic material removal mechanism of the plastic two-color molding machine comprises a plurality of parallel machines, each of which is provided with a lower mold, and an upper mold A and an upper mold B which are perpendicular to each other by 90 degrees are provided above the lower mold, and the upper mold A and the upper mold B can rotate 90 degrees under the drive of the rotating shaft, and two concave mold cavities are symmetrically provided on the lower mold, and two convex shoe blanks are symmetrically provided on the upper mold A and the upper mold B, respectively, and the contact surfaces between the two convex shoe blanks of the upper mold A and the upper mold B and the two mold cavities of the lower mold are respectively provided with injection channels, and a hopper platform with a two-color hopper and movable along a track parallel to the plurality of machines is provided behind the plurality of parallel machines; the characteristics are as follows: It also includes an automatic material taking device on each machine, a groove is provided on the glue injection flow channel between the two mold cavities of the lower mold, and a protrusion corresponding to the position of the groove is provided on the glue injection flow channel between the two protruding shoe blanks of the upper mold B.

2. The automatic material removal mechanism for a plastic two-color molding machine according to claim 1, characterized in that: The automatic material picking device consists of a fixed seat, a movable seat, a lifting cylinder, a fixed bracket and a chuck. The fixed seat is fixed on the machine platform, the movable seat moves on the slide rail of the fixed seat through a horizontal cylinder, the cylinder body of the lifting cylinder is fixed on the outside of the fixed bracket, the chuck is fixed on the free end of the lifting cylinder, and a pneumatic clamping piece is provided at the front end of the chuck.

3. The automatic material removal mechanism for a plastic two-color molding machine according to claim 2 is characterized in that: The clamps are two, one above the other, and each clamp is provided with a clamping sheet.

4. The automatic material removal mechanism for a plastic two-color molding machine according to claim 1, characterized in that: There are two grooves in the middle of the two mold cavities of the lower mold, and the positions between the two raised shoe blanks of the upper mold B corresponding to the grooves are provided with matching protrusions.

5. The automatic material removal mechanism for a plastic two-color molding machine according to claim 1, characterized in that: The two material head protrusions on the material head on the surface of the glue injection flow channel formed by the grooves and protrusions during the glue injection process correspond to the positions of the clamping pieces on the two clamps.

Images