Injection mold easy to demold

Abstract

The utility model discloses an injection mold easy to demold, which comprises a [-shaped support frame, an upper mold arranged in the support frame in a sliding manner and a lower mold arranged below the upper mold, support legs are respectively fixed at four corners of the bottom surface of the lower mold, a product groove is formed in the top surface of the lower mold, an ejection part is arranged below the lower mold, and the ejection part is connected with the support frame. The injection mold is characterized by further comprising a cooperation part arranged on the inner side of the supporting frame, relates to the technical field of injection molds, and aims at solving the problems that in the prior art, after injection molding and cooling, an upper mold needs to be manually opened, then an injection molding part is ejected out by pushing a connecting plate, manual mold closing is needed during injection molding production, and the operation process is time-consuming and labor-consuming. The upper die and the lifting plate are driven by the lead screw to synchronously ascend until the lifting plate ascends to be in contact with the ejector plate, the ejector rod and the ejector block are driven by pushing the ejector plate to synchronously ascend, and a product cooled and formed in the product groove is gradually ejected out.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and specifically relates to an injection mold that is easy to demold. Background Technique

[0002] An injection mold is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some parts with complex shapes. Specifically, it means injecting the heat-melted plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidifying, the formed product is obtained. After the injection mold finishes working, the mold was previously tightly fitted, which is inconvenient for the staff to demold. The existing demolding mechanism is troublesome to demold during use and is likely to cause damage to the injection molded parts.

[0003] The existing patent publication number CN218948292U discloses an injection mold that is easy to demold. When an operator produces, the upper mold is placed above the lower mold so that the two are tightly fitted together. Subsequently, the threaded rod is passed through the inner parts of the two side fixing blocks, and the lower mold and the upper mold are tightly fixed together for injection molding. After the injection molding is completed, the operator opens the upper mold through the handle, and finally holds the handle and pushes the connecting rod upward, and the injection molded part inside the lower mold can be demolded through the top plate.

[0004] Although this patent solves the problem that the demolding mechanism of the existing mold is inconvenient to demold and is likely to cause damage to the injection molded parts, it is found in actual operation that after the injection molding cools down, it is necessary for the operator to open the upper mold manually, and then push out the injection molded part by pushing the connecting plate, and manual mold closing is also required during injection molding production. This operation process is time-consuming and laborious. Content of the Utility Model

[0005] To solve the above technical problems, an injection mold that is easy to demold is provided, which solves the problems in the prior art that after the injection molding cools down, it is necessary for the operator to open the upper mold manually, and then push out the injection molded part by pushing the connecting plate, and manual mold closing is also required during injection molding production, and the operation process is time-consuming and laborious.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: an injection mold that is easy to demold, including a support frame in a U-shaped shape, an upper mold slidably arranged inside the support frame, and a lower mold arranged below the upper mold. Four corners of the bottom surface of the lower mold are respectively fixed with legs. A product groove is opened on the top surface of the lower mold. A top-out component is arranged below the lower mold. An injection port is opened on the side wall of the upper mold. A discharge port facing the product groove is opened on the bottom surface of the upper mold. The injection port and the discharge port are communicated with each other. It is characterized in that: a cooperative component is also arranged inside the support frame;

[0007] The collaborative component includes a lifting plate slidably arranged below the ejecting component and two lead screws respectively threaded through the inner walls on both sides of the lifting plate. The two ends of each lead screw are respectively rotatably connected to the inner walls at both ends of the support frame. A moving block is sleeved on the lead screw in a threaded manner, and the moving block is fixedly connected to the upper mold.

[0008] Preferably, pulley wheels are fixedly sleeved on the tops of the two lead screws, and a transmission belt is connected between the two pulley wheels.

[0009] Preferably, a motor is installed on the top surface of the support frame. The output shaft of the motor rotatably penetrates into the support frame and is fixed to one of the lead screws.

[0010] Preferably, the ejecting component includes a top plate slidably arranged between the lower mold and the lifting plate. A plurality of ejector rods are fixed on the top surface of the top plate. The ejector rods slidably penetrate into the product grooves of the upper mold and are fixed with ejector blocks. Counterbores adapted to the ejector blocks are formed on the bottom surfaces of the inner walls of the product grooves.

[0011] Compared with the prior art, the advantages of the present utility model are as follows:

[0012] (1) Through the cooperative setting of the ejecting component and the collaborative component, the lead screw drives the upper mold and the lifting plate to rise synchronously until the lifting plate rises to contact the top plate. By pushing the top plate, the ejector rods and the ejector blocks are driven to rise synchronously. As the ejector rods and the ejector blocks rise, the products cooled and formed in the product grooves are gradually ejected. At this time, the upper mold also rises to a certain height, which does not prevent the operator from taking out the injection-molded products. Subsequently, when injection molding production is carried out again, when the lead screw drives the lifting plate to descend, the top plate can only descend under the action of its own gravity and drives the ejector rods and the ejector blocks to descend synchronously until the ejector blocks descend to abut against the bottom surface of the inner wall of the counterbore in the product groove. In this way, the problems in the prior art that after injection molding and cooling, manual opening of the upper mold is required, and then the injection-molded parts are ejected by pushing, and manual mold closing is also required during injection molding production, and the operation process is time-consuming and laborious can be solved.

[0013] (2) Through the setting of the pulley wheels and the motor, when injection molding production is required, the motor can be started to rotate to drive one of the lead screws to rotate. The rotation of one of the lead screws drives one of the pulley wheels to rotate synchronously. The rotation of one of the pulley wheels drives the other pulley wheel to rotate synchronously through the belt. The rotation of the two pulley wheels drives the two lead screws to rotate synchronously. In this way, the lead screws can be driven to rotate forward and backward synchronously by controlling the forward and reverse rotation of the starting motor, and then the upper mold and the lifting plate can be driven to rise or descend. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 Front view of the structure of the cooperative component of the present utility model cooperating with the upper mold

[0016] Figure 3 Front view of the structure of the cooperative component of the present utility model cooperating with the ejector component

[0017] Figure 4 Cross-sectional view of the ejector component structure of the present utility model

[0018] The reference numerals in the figure are as follows

[0019] 1. Support frame; 2. Upper mold; 3. Lower mold; 4. Lifting plate; 5. Top plate; 6. Leg; 7. Motor; 8. Lead screw; 9. Moving block; 10. Pulley; 11. Ejector rod; 12. Ejector block Specific implementation mode

[0020] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations

[0021] Refer to Figures 1 to 4 As shown, an injection mold that is easy to demold includes a support frame 1 in a U shape, an upper mold 2 slidably disposed in the support frame 1, and a lower mold 3 disposed below the upper mold 2. Four corners of the bottom surface of the lower mold 3 are respectively fixed with legs 6. A product groove is formed on the top surface of the lower mold 3. An ejector component is disposed below the lower mold 3. An injection port is formed on the side wall of the upper mold 2, and a discharge port facing the product groove is formed on the bottom surface of the upper mold 2. The injection port and the discharge port are communicated with each other. A cooperative component for providing kinetic energy for the ejector component is further included and disposed inside the support frame 1

[0022] The ejector component includes a top plate 5 slidably disposed between the lower mold 3 and the lifting plate 4. A plurality of ejector rods 11 are fixed on the top surface of the top plate 5. The ejector rods 11 slidably penetrate into the product groove of the upper mold 2 and are fixed with ejector blocks 12. A counterbore adapted to the ejector block 12 is formed on the bottom surface of the inner wall of the product groove

[0023] The cooperative component includes a lifting plate 4 slidably disposed below the ejector component and two lead screws 8 respectively threadedly penetrating through the inner walls on both sides of the lifting plate 4. The two ends of the lead screw 8 are respectively rotatably connected to the inner walls at both ends of the support frame 1. A moving block 9 is threadedly sleeved on the lead screw 8. The moving block 9 is fixedly connected to the upper mold 2

[0024] Through the cooperative setting of the ejection component and the cooperative component, when injection molding production is required, the two lead screws 8 can be rotated to drive the two moving blocks 9 to descend. The descent of the moving blocks 9 drives the upper mold 2 to descend. During this process, the lifting plate 4 descends synchronously with the upper mold 2 until the upper mold 2 descends to be clamped with the lower mold 3. Subsequently, the liquefied plastic is injected through the injection port on the side wall of the upper mold 2 and enters the product groove of the lower mold 3 through the discharge port. Then it is cooled and solidified. By rotating the two lead screws 8 in the reverse direction, the upper mold 2 and the lifting plate 4 are driven by the lead screws 8 to rise synchronously until the lifting plate 4 rises to contact the top plate 5. Subsequently, it continues to rise, and the ejector rod 11 and the ejector block 12 are driven to rise synchronously by pushing the top plate 5. As the ejector rod 11 and the ejector block 12 rise, the product cooled and formed in the product groove is gradually ejected. At this time, the upper mold 2 also rises to a certain height, which does not prevent the operator from taking out the injection molded product. Subsequently, when injection molding production is carried out again, when the lead screws 8 drive the lifting plate 4 to descend, the top plate 5 can only descend under the action of its own gravity and drives the ejector rod 11 and the ejector block 12 to descend synchronously until the ejector block 12 descends to abut against the bottom surface of the inner wall of the counterbore in the product groove. In this way, the problems in the prior art that after injection molding and cooling, it is necessary for manual labor to open the upper mold and then eject the injection molded part by pushing the connecting plate, and manual clamping is also required during injection molding production, and the operation process is time-consuming and laborious can be solved.

[0025] Further, referring to Figures 1 to 4 As shown, it is worth noting that pulley wheels 10 are fixedly sleeved on the tops of the two lead screws 8, and a transmission belt is connected between the two pulley wheels 10. A motor 7 is installed on the top surface of the support frame 1, and the output shaft of the motor 7 rotates through the support frame 1 and is fixed to one of the lead screws 8;

[0026] Through the setting of the pulley wheels 10 and the motor 7, when injection molding production is required, the motor 7 can be started to rotate to drive one of the lead screws 8 to rotate. The rotation of one of the lead screws 8 drives one of the pulley wheels 10 to rotate synchronously. The rotation of one of the pulley wheels 10 drives the other pulley wheel 10 to rotate synchronously through the transmission belt. The rotation of the two pulley wheels 10 drives the two lead screws 8 to rotate synchronously. In this way, the lead screws 8 can be driven to rotate forward and backward synchronously by controlling the forward and reverse rotation of the starting motor 7, and then the upper mold 2 and the lifting plate 4 can be driven to rise or descend.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold that is easy to demold, comprising a support frame (1) in a U-shaped configuration, an upper mold (2) slidably disposed within the support frame (1), and a lower mold (3) disposed below the upper mold (2). Four corners of the bottom surface of the lower mold (3) are respectively fixed with legs (6). A product groove is formed on the top surface of the lower mold (3). A ejecting member is disposed below the lower mold (3). An injection port is formed on the side wall of the upper mold (2), and a discharge port facing the product groove is formed on the bottom surface of the upper mold (2). The injection port is communicated with the discharge port. It is characterized in that: It also includes a cooperative component arranged on the inner side of the support frame (1); The cooperative component comprises a lifting plate (4) slidably arranged below the ejection component and two lead screws (8) respectively threadedly penetrated through the inner walls at both sides of the lifting plate (4), the two ends of the lead screw (8) are respectively rotatably connected to the inner walls at both ends of the support frame (1), and a moving block (9) is threadedly sleeved on the lead screw (8), and the moving block (9) is fixedly connected to the upper mold (2).

2. The easy-to-demold injection mold according to claim 1, characterized in that: The top ends of the two lead screws (8) are fixedly sleeved with pulleys (10), and a transmission belt is connected between the two pulleys (10).

3. The easy-to-demold injection mold according to claim 1, characterized in that: A motor (7) is mounted on the top surface of the support frame (1); an output shaft of the motor (7) is rotatably inserted into the support frame (1) and is fixed to one of the lead screws (8).

4. The easy-to-demold injection mold according to claim 1, characterized in that: The ejection component comprises a top plate (5) slidably arranged between the lower mold (3) and the lifting plate (4), a plurality of ejector rods (11) being fixed on the top surface of the top plate (5), the ejector rods (11) being slidably inserted into the product groove of the upper mold (2) and being fixed with an ejector block (12), and a countersunk hole matching the ejector block (12) being provided on the bottom surface of the inner wall of the product groove.

Images