Ejection device for injection moulds

Abstract

A kind of pull-off device for injection mold, including the material taking mechanism corresponding to injection molding machine mold setting, the material taking mechanism removes the hand-held buckle material band in it when injection molding machine mold completes injection molding and opens, the material taking mechanism is fixed in the hand-held buckle closest to the hand-held buckle of injection molding machine mold opening position in the hand-held buckle material band during injection molding process to prevent the hand-held buckle material band outside injection molding machine mold and the hand-held buckle material band inside injection molding machine mold fracture.The beneficial effects of the utility model are: through the automation design of material taking mechanism, replace traditional manual material taking mode, effectively improve production efficiency.Material taking mechanism fixes the hand-held buckle close to opening position during injection molding, avoids the fracture problem of material band due to uneven stress, guarantees the continuity of production.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for injection molds, and more particularly to a pull-button device for injection molds. Background Technology

[0002] In the injection molding industry, handle buckle strips are typically mass-produced using injection molds. After molding, the handle buckle strips need to be removed from the mold for further processing. In existing technologies, the removal of handle buckle strips largely relies on manual operation. Operators must manually remove the strip from the mold after the injection molding machine opens, and then feed a new strip into the mold for the next injection molding cycle.

[0003] However, manual material handling suffers from low production efficiency and cannot meet the demands of large-scale automated production. Furthermore, uneven stress on the conveyor belt during manual operation can easily lead to breakage at joints, affecting the continuity of subsequent production and increasing production costs and material waste. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pull-tab device for injection molds that enables automatic material handling and prevents material strip breakage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pull buckle device for injection molds, comprising a material-retrieving mechanism corresponding to the injection mold, wherein the material-retrieving mechanism retrieves the handle buckle material strip when the injection mold is opened after injection molding, and the material-retrieving mechanism is fixed at the handle buckle closest to the mold opening position of the handle buckle material strip during the injection molding process to prevent the handle buckle material strip located on the outside of the injection mold from breaking with the handle buckle material strip located on the inside of the injection mold.

[0006] The beneficial effects of this invention are: by automating the material handling mechanism, the traditional manual material handling method is replaced, effectively improving production efficiency. During injection molding, the material handling mechanism secures the handle near the mold opening position, preventing breakage of the material strip due to uneven stress and ensuring production continuity. As a preferred method, a positioning component can be installed in the material handling mechanism to precisely position the material strip through a mechanical structure; as another preferred method, a pneumatic drive can be used to automate the material handling action, further improving operational stability.

[0007] Furthermore, the material handling mechanism includes a feeding plate and a pressing plate abutting against the feeding plate, with a handle buckle located between the feeding plate and the pressing plate.

[0008] The mating structure of the feed plate and the clamping plate provides stable guidance and support for the handle strap conveyor belt, effectively preventing the belt from shifting or coming off during transport. As a preferred method, anti-slip textures can be provided on the surface of the feed plate to increase the friction between the belt and the feed plate; as another preferred method, the clamping plate can be designed as an adjustable structure to accommodate handle strap conveyor belts of different thicknesses.

[0009] Furthermore, one end of the clamping plate is inclinedly provided with a guide plate, and this inclination causes the opening between the feeding plate and the clamping plate to be enlarged towards the injection molding mold.

[0010] The inclined design of the guide plate widens the inlet between the feeding plate and the clamping plate, facilitating the smooth entry of the conveyor belt between them, reducing manual alignment operations, and improving feeding smoothness. As a preferred method, the inclination angle of the guide plate can be set to 30°-45° to accommodate the feeding requirements of conveyor belts of different specifications; as another preferred method, the surface of the guide plate can be made of a smooth and wear-resistant material to reduce frictional resistance during conveyor belt feeding.

[0011] Furthermore, the material handling mechanism also includes a fixing plate, which is fixed to a non-moving template in the injection molding machine mold. A clamping cylinder is provided on the fixing plate, and one retractable end of the clamping cylinder is fixed to the clamping plate.

[0012] Dynamic clamping is achieved by driving the clamping plate with a clamping cylinder. The clamping force can be adjusted in real time according to the thickness of the material strip and the conveying status, avoiding the material strip damage or loosening problems that may occur with traditional fixed clamping methods. As a preferred method, a pressure sensor can be installed on the clamping cylinder to achieve precise control of the clamping force; as another preferred method, the fixed plate and the mold template are connected by bolts, which facilitates installation, disassembly and maintenance.

[0013] Furthermore, the material handling mechanism also includes a movable plate, which is fixed to an openable template in the injection molding machine mold. A positioning plate that moves with the movable plate is fixed on the movable plate, and a positioning post is provided on the positioning plate corresponding to the number of handle buckles. The positioning post is inserted into the handle hole at the center of the handle buckle.

[0014] The movable plate moves synchronously with the mold opening and closing template, causing the positioning pin on the positioning plate to insert into the handle hole of the handle buckle, achieving precise positioning of the handle buckle during injection molding and ensuring reliable fixing effect. As a preferred method, the diameter of the positioning pin is slightly smaller than the inner diameter of the handle hole, which ensures positioning stability and avoids excessive compression of the material strip; as another preferred method, the positioning plate and the movable plate are fixed by welding, which enhances the structural strength.

[0015] Furthermore, a number of movable guide posts are fixed on the fixed plate, and the other end of each guide post is fixed to the movable plate.

[0016] The guide posts provide stable guidance for the movement of the movable plate, ensuring the accuracy of the positioning posts when inserting into the handle holes of the carrying buckle and preventing deviation during movement. As a preferred method, the guide post surface is provided with a lubricating coating to reduce frictional resistance during movement; as another preferred method, four guide posts are set, located at the four corners of the movable plate, to improve guiding stability.

[0017] Furthermore, the feeding plate is provided with a material lifting cylinder and a material feeding plate fixed to the extendable end of the material lifting cylinder on the side facing away from the material carrying buckle. The material feeding plate is provided with a material conveying telescopic cylinder corresponding to the number of carrying buckles. The material conveying telescopic cylinder can be inserted into the handle hole at the center of the carrying buckle.

[0018] The combination of the material lifting cylinder and the material telescopic cylinder enables the automated removal of the material belt by the handle. The material belt is moved by inserting a handle hole, preventing damage during removal. As a preferred method, the stroke of the material lifting cylinder can be adjusted according to the mold height; as another preferred method, the material conveying plate is made of lightweight alloy material, reducing the cylinder load.

[0019] Furthermore, the end of the material handling mechanism away from the injection molding machine mold also includes a conveyor plate, and a pressure belt cylinder is provided on the conveyor plate. An anti-detachment plate with the same width as the conveyor plate is fixed to the telescopic end of the pressure belt cylinder.

[0020] The pressure belt cylinder drives the anti-detachment plate to adjust the distance between itself and the conveyor plate, effectively preventing the material belt from slipping off during the conveying process and ensuring smooth subsequent processing. As a preferred method, the bottom of the anti-detachment plate is equipped with an elastic buffer layer to avoid indentation on the surface of the material belt; as another preferred method, the surface of the conveyor plate is equipped with guide grooves to further improve the stability of the material belt conveying. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an isometric view of the material handling mechanism in the open and closed state according to an embodiment of this utility model; Figure 3 This is a partial enlarged view of the positioning plate in an embodiment of this utility model; Figure 4 This is a partial enlarged view of the guide plate in an embodiment of the present invention; Figure 5 This is a partial enlarged view of the material conveying and lifting cylinder in an embodiment of this utility model; Figure 6 This is a partial enlarged view of the clamping cylinder in an embodiment of this utility model; Figure 7 This is a partial enlarged view of the cylinder of the pressing belt in an embodiment of this utility model. Detailed Implementation

[0022] This utility model embodiment provides a pull-tab device for injection molds, such as... Figure 1-7 As shown: A material handling mechanism 1 is included, which is configured to automatically retrieve and secure the handle strap material, corresponding to the injection molding machine mold 2. The material handling mechanism 1 includes a feeding plate 11 and a pressing plate 12. The feeding plate 11 is horizontally positioned, and the pressing plate 12 is located above and abuts against the feeding plate 11. The handle strap material is located between the feeding plate 11 and the pressing plate 12, which together form the material conveying channel. A guide plate 121 is inclinedly positioned at the end of the pressing plate 12 closest to the injection molding machine mold 2. The guide plate 121 widens the opening between the feeding plate 11 and the pressing plate 12 towards the injection molding machine mold 2, facilitating the smooth entry of the material into the conveying channel.

[0023] The material handling mechanism 1 also includes a fixed plate 13 and a movable plate 14. The fixed plate 13 is bolted to the stationary template 21 in the injection molding machine mold 2. A clamping cylinder 131 is installed on the fixed plate 13. One extendable end of the clamping cylinder 131 is fixedly connected to the clamping plate 12. The extension and retraction of the clamping cylinder 131 drives the clamping plate 12 to move up and down, thereby dynamically clamping the material strip. The movable plate 14 is fixed to the openable template 22 in the injection molding machine mold 2. A positioning plate 141 is fixed on the movable plate 14. Positioning posts 142 are vertically arranged on the positioning plate 141 corresponding to the number of handles. The positioning posts 142 can be inserted into the handle holes at the center of the handles to fix the material strip during the injection molding process. Four movable guide posts 132 are fixed on the fixed plate 13. The other end of the guide posts 132 is fixed to the four corners of the movable plate 14 to guide the movement of the movable plate 14.

[0024] A material conveying lifting cylinder 15 is provided on the side of the feeding plate 11 facing away from the material conveying direction. The telescopic end of the material conveying lifting cylinder 15 is fixed with a material conveying plate 151. A material conveying telescopic cylinder 152 is provided on the material conveying plate 151 corresponding to the number of handles. The material conveying telescopic cylinder 152 can be inserted into the handle hole at the center of the handle for taking out the material conveyor belt. A conveying plate 16 is also provided at the end of the material taking mechanism 1 away from the injection molding mold 2. A material pressing cylinder 161 is provided on the conveying plate 16. The telescopic end of the material pressing cylinder 161 is fixed with an anti-detachment plate 162 of the same width as the conveying plate 16 to prevent the material conveyor belt from detaching during the conveying process.

[0025] The working principle of this embodiment is as follows: When the injection molding machine mold 2 is closed for injection, the moving plate 14 moves with the openable template 22, driving the positioning pin 142 on the positioning plate 141 to insert into the handle hole closest to the mold opening position, thereby fixing the material strip; when the injection molding is completed and the mold is opened, the moving plate 14 opens with the openable template 22, the positioning pin 142 disengages from the handle hole, the material conveying lifting cylinder 15 drives the material conveying plate 151 to move down, the material conveying telescopic cylinder 152 extends out of the handle hole, and then the material conveying lifting cylinder 15 rises to drive the material strip out, and so on to carry out all the material strip; the material strip is conveyed to the conveying plate 16 via the feeding plate 11, and the pressing strip cylinder 161 drives the anti-detachment plate 162 to press down to prevent the material strip from coming out.

[0026] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A pull-tab device for injection molds, comprising a material handling mechanism corresponding to the injection molding machine mold, characterized in that: The material handling mechanism removes the handle strap when the injection molding machine mold is opened after injection molding. During the injection molding process, the material handling mechanism is fixed at the handle strap closest to the mold opening position of the injection molding machine mold to prevent the handle strap located on the outside of the injection molding machine mold from breaking with the handle strap located on the inside of the injection molding machine mold.

2. The pull-tab device for injection molds according to claim 1, characterized in that: The material handling mechanism includes a feeding plate and a pressing plate abutting against the feeding plate, with a handle buckle located between the feeding plate and the pressing plate.

3. The pull-tab device for injection molds according to claim 2, characterized in that: One end of the clamping plate is inclined with a guide plate, and this inclination causes the opening between the feeding plate and the clamping plate to be enlarged towards the injection molding mold.

4. The pull-tab device for injection molds according to claim 2, characterized in that: The material handling mechanism also includes a fixing plate, which is fixed to a non-moving template in the injection molding machine mold. A clamping cylinder is provided on the fixing plate, and one retractable end of the clamping cylinder is fixed to the clamping plate.

5. The pull-tab device for injection molds according to claim 4, characterized in that: The material handling mechanism also includes a movable plate, which is fixed to an openable template in the injection molding machine mold. A positioning plate that moves with the movable plate is fixed on the movable plate. Positioning pins are provided on the positioning plate corresponding to the number of handle buckles. The positioning pins are inserted into the handle holes at the center of the handle buckles.

6. The pull-tab device for injection molds according to claim 5, characterized in that: Several movable guide posts are fixed on the fixed plate, and the other end of each guide post is fixed to the movable plate.

7. The pull-tab device for injection molds according to claim 5, characterized in that: The feeding plate is provided with a material lifting cylinder and a material feeding plate fixed to the extendable end of the material lifting cylinder on the side facing away from the material carrying buckle. The material feeding plate is provided with a material conveying telescopic cylinder corresponding to the number of handle buckles. The material conveying telescopic cylinder can be inserted into the handle hole at the center of the handle buckle.

8. The pull-tab device for injection molds according to claim 1, characterized in that: The end of the material handling mechanism away from the injection molding machine mold also includes a conveyor plate. The conveyor plate is equipped with a pressure belt cylinder, and the retractable end of the pressure belt cylinder is fixed with an anti-detachment plate of the same width as the conveyor plate.

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