Rubber molding easy-release mold

Abstract

The utility model discloses an easy demoulding mould for rubber forming relates to forming mould technical field, including the lower mould of fixed in base and the upper mould of vertical lift, the lower mould is fixed with the form plate in, is set up with a plurality of forming grooves on the form plate, and the bottom of every forming groove is equipped with the opening and is provided with the movable forming block in the opening, the lower portion of form plate is provided with the floating plate through spring floating, and the movable forming block is fixed at the top of floating plate, and the floating plate is synchronous and moves down until the movable forming block and forming groove form smooth forming face in the closing mould process of upper mould, and the movable forming block of floating plate top is lifted rubber part separation under the action of spring in the mould -split process of upper mould, the utility model discloses the cooperation of elastic reset mechanism and movable forming block, and the forming product is automatically ejected from forming groove when opening mould, does not need manual intervention, and the demoulding process is fast and stable, and the production efficiency is improved significantly, and the product damage or deformation caused by uneven external force is avoided.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, specifically to an easy-release mold for rubber molding. Background Technology

[0002] Rubber molding dies are key pieces of equipment in the production of rubber products, used to mold liquid or semi-solid rubber materials into products of specific shapes.

[0003] In existing technologies, rubber molding dies often suffer from several problems during the demolding process: First, traditional molds mostly use fixed molding cavities, relying on manual or simple mechanical ejection devices for demolding. This can easily lead to product damage or deformation due to uneven demolding forces, especially for products with complex shapes, deep cavities, or undercut structures, where demolding becomes even more difficult. Second, the cooling systems of existing molds are inefficient, prolonging the molding cycle and affecting production efficiency. Furthermore, uneven material distribution during injection can result in inconsistent product density, impacting product quality. Although some molds attempt to improve demolding by using ejector pins or angled ejector mechanisms, these are complex in structure, costly to manufacture, and still suffer from uneven ejection. Therefore, we propose an easy-demolding mold for rubber molding. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-release mold for rubber molding.

[0005] The technical problem solved by this utility model is: how to solve the problem that traditional molds are prone to damaging products during demolding, as well as the problems of low efficiency, slow cooling speed, and long molding cycle of manual demolding or simple ejection mechanisms.

[0006] This utility model can be achieved through the following technical solution: an easy-to-demold mold for rubber molding, including a lower mold fixed to a base and an upper mold that can be vertically lifted and lowered. A template is fixed inside the lower mold, and multiple molding grooves are opened on the template. Each molding groove has an opening at the bottom and a movable molding block is set inside the opening. A floating plate is floating below the template by means of a spring. The movable molding block is fixed on the top of the floating plate. During the mold closing process of the upper mold, the floating plate moves down synchronously until the movable molding block and the molding groove form a smooth molding surface. During the mold opening process of the upper mold, the movable molding block on the top of the floating plate lifts the rubber part and separates it under the action of the spring.

[0007] A further technical improvement of this utility model is that: a positioning pin is provided at the bottom of the upper mold, a positioning hole corresponding to the positioning pin is provided at the top of the lower mold, and a pressing pin shaft that slides with the positioning hole is provided at the top of the floating plate. During the mold closing process, the positioning pin and the pressing pin shaft abut against each other to transmit pressure and drive the floating plate to move downward.

[0008] A further technical improvement of this utility model is that a fixed sleeve is fixed at the bottom middle position of the lower mold, a spring is provided inside the fixed sleeve, and a movable pin is provided above the spring. The movable pin slides up and down along the inner wall of the fixed sleeve under the action of the spring, and the top of the movable pin is fixed to the floating plate.

[0009] A further technical improvement of this utility model is that: sliders are symmetrically installed at the four corners of the bottom of the lower mold cavity by means of two floating springs, and a connecting rod is rotatably connected to the top of each slider, and the other end of the connecting rod is rotatably connected to the bottom of the floating plate.

[0010] A further technical improvement of this utility model is that a cooling water channel is embedded in the template inside the lower mold, and a cooling liquid inlet and a cooling liquid outlet are provided on the outer wall of the lower mold.

[0011] A further technical improvement of this utility model is that: a homogenizing injection strip is provided on the top of the upper mold, the homogenizing injection strip corresponds to the molding groove, and the homogenizing injection strip is connected to a liquid material pipe and has a vent hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, through the cooperation of the elastic reset mechanism and the movable molding block, automatically ejects the molded product from the molding groove when the mold is opened, without the need for manual intervention. The demolding process is fast and stable, which significantly improves production efficiency and avoids damage or deformation of the product caused by uneven external force. It is especially suitable for rubber products with complex shapes.

[0013] 2. This utility model employs a precise matching of multiple extrusion pins and positioning pins to ensure that the floating plate compresses the spring during mold closing and releases its elastic potential energy during mold opening, pushing the floating plate upwards evenly. This allows the movable forming blocks to synchronously lift the product, achieving balanced ejection at multiple points, preventing localized stress concentration, and ensuring product integrity. Furthermore, the guide pillar design ensures accurate alignment of the upper and lower molds, improving mold closing precision. The cooling water system enables rapid and uniform cooling, shortening molding time. The homogenizing injection strip ensures uniform material injection, improving product consistency and quality. The overall structure is compact, with low manufacturing costs and easy maintenance. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure connection of the lower mold of this utility model; Figure 3 This is a schematic diagram of the horizontal buffer structure at the bottom of the lower mold of this utility model.

[0016] In the diagram: 1. Lower mold; 2. Upper mold; 3. Lower fixed block; 4. Upper fixed block; 5. Guide post; 6. Template; 7. Forming groove; 8. Movable forming block; 9. Floating plate; 10. Positioning pin; 11. Extrusion pin; 12. Fixed sleeve; 13. Spring 1; 14. Movable pin; 15. Slider; 16. Connecting rod; 17. Spring 2; 18. Cooling inlet; 19. Cooling outlet; 101. Positioning hole; 20. Homogenizing injection strip. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] Please see Figure 1-3 As shown, an easy-to-demold mold for rubber molding includes an upper mold 1 and a lower mold 2, wherein the lower mold 1 is fixed on a base, the top middle position of the upper mold 2 is fixedly connected to the output end of a hydraulic lifting rod, lower fixing blocks 3 are symmetrically fixedly installed on both sides of the lower mold 1, and upper fixing blocks 4 are symmetrically fixedly installed on both sides of the upper mold 2. Each lower fixed block 3 has a guide post 5 vertically fixed at its top. The top of the guide post 5 passes through the corresponding upper fixed block 4 and can slide relative to it, so that the upper mold 2 slides up and down relative to the lower mold 1 under the guidance of the guide post 5. Both the lower mold 1 and the upper mold 2 have templates 6 fixed inside, and each template 6 has a forming groove 7. The bottom of the forming groove 7 of the template 6 in the lower mold 1 has an opening, and a movable forming block 8 is provided in the opening area to block it. The top arc surface of the movable forming block 8 cooperates with the forming groove 7 to form a smooth forming surface. A floating plate 9 is horizontally arranged directly below the template 6. Multiple movable forming blocks 8 are fixed together on the top of the floating plate 9. Multiple extrusion pins 11 are evenly fixed on the top edge of the floating plate 9. Multiple positioning holes 101 are evenly opened on the top edge of the lower mold 1. The extrusion pins 11 are slidably arranged in the positioning holes 101, and the extrusion pins 11 correspond one-to-one with the positioning holes 101. A fixed sleeve 12 is fixed inside the lower mold 1 at the lower center of the floating plate 9. A movable pin 14 is slidably mounted on the top of the fixed sleeve 12. The top of the movable pin 14 is fixed to the bottom of the floating plate 9, and the bottom of the movable pin 14 abuts against a spring 13 located inside the fixed sleeve 12. The other end of the spring 13 abuts against the lower mold 1. Slider blocks 15 are symmetrically mounted at the four corners of the bottom of the lower mold 1 via springs 17. A connecting rod 16 is rotatably connected to the top of each slider 15, and the other end of the connecting rod 16 is rotatably connected to the bottom of the floating plate 9. Under the action of springs 17, the four sliders 15 tend to move closer to each other. Furthermore, multiple positioning pins 10 are evenly fixed at the bottom edge of the upper mold 2, with each positioning pin 10 corresponding to a positioning hole 101. Cooling water channels are embedded in the template 6 inside the lower mold 1, and cooling liquid inlet 18 and cooling liquid outlet 19 are respectively provided on the outer wall of the lower mold 1 for connecting to the external circulating water channel. The top of the upper mold 2 is provided with multiple homogenizing injection strips 20, each homogenizing injection strip 20 corresponding to the molding groove 7. The homogenizing injection strip 20 is connected to a liquid material pipe, and the top of the homogenizing injection strip 20 is provided with a vent hole.

[0019] In use, this utility model drives the hydraulic lifting rod to move downward, causing the upper mold 2 to move downward and thus close with the lower mold 1. During the mold closing process, the positioning pin 10 enters the positioning hole 101 under the guidance and abuts against the top of the extrusion pin 11. Then, it presses down on the floating plate 9, and the two springs at the slider 15 and the movable pin 14 are compressed to obtain elastic potential energy. After the mold is closed, the movable forming block 8 just matches the forming groove 7 to form a smooth forming surface. Liquid material is injected into the corresponding molding tank 7 by multiple homogenizing injection strips 20. After the material is filled, the material in the molding tank 7 is solidified and cooled by the cooling water channel. After a certain period of time, the hydraulic lifting rod is driven to move upward, which drives the upper mold 2 to move upward. During the upward movement of the upper mold 2, the movable molding block 8 moves upward under the release of the elastic potential energy of the two springs, and lifts the molded rubber product to separate from the molding tank 7, thereby completing the automatic demolding operation.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A rubber molding die with easy demolding, comprising a lower die (1) fixed to a base and an upper die (2) capable of vertical lifting, characterized in that, The lower mold (1) has a template (6) fixed inside. The template (6) has multiple forming grooves (7). Each forming groove (7) has an opening at the bottom and a movable forming block (8) is set inside the opening. A floating plate (9) is set below the template (6) by a spring. The movable forming block (8) is fixed on the top of the floating plate (9). The floating plate (9) moves down synchronously during the mold closing process of the upper mold (2) until the movable forming block (8) and the forming groove (7) form a smooth forming surface. During the mold opening process of the upper mold (2), the movable forming block (8) on the top of the floating plate (9) lifts the rubber part and separates it under the action of the spring.

2. The easy-release mold for rubber molding according to claim 1, characterized in that, The bottom of the upper mold (2) is provided with a positioning pin (10), and the top of the lower mold is provided with a positioning hole (101) corresponding to the positioning pin (10). The top of the floating plate (9) is provided with a pressing pin (11) that slides with the positioning hole (101). During the mold closing process, the positioning pin (10) and the pressing pin (11) abut against each other to transmit pressure and drive the floating plate (9) to move down.

3. The easy-release mold for rubber molding according to claim 1, characterized in that, A fixed sleeve (12) is fixed at the bottom middle position of the lower mold (1). A spring (13) is provided inside the fixed sleeve (12). A movable pin (14) is provided above the spring (13). The movable pin (14) slides up and down along the inner wall of the fixed sleeve (12) under the action of the spring, and the top of the movable pin (14) is fixed to the floating plate (9).

4. The easy-release mold for rubber molding according to claim 1, characterized in that, At the four symmetrical positions of the bottom of the inner cavity of the lower mold (1), sliders (15) are slidably installed by springs (17). The top of each slider (15) is rotatably connected to a connecting rod (16), and the other end of the connecting rod (16) is rotatably connected to the bottom of the floating plate (9).

5. The easy-release mold for rubber molding according to claim 1, characterized in that, Cooling water channels are embedded in the template (6) inside the lower mold (1), and a cooling inlet (18) and a cooling outlet (19) are provided on the outer wall of the lower mold (1).

6. The easy-release mold for rubber molding according to claim 1, characterized in that, The top of the upper mold (2) is provided with a homogenizing injection strip (20), which corresponds to the molding groove (7), and the homogenizing injection strip (20) is connected to a liquid material pipe and has a vent hole.

Images