Forming die

Abstract

The utility model discloses a forming die which comprises a base, a shaping plate and a die assembly plate, a needle plate assembly is fixed to the top of the base, a plurality of ejector pins extending up and down are fixed to the needle plate assembly, a positioning ring assembly is installed in the shaping plate, the ejector pins abut against the lower end of the positioning ring assembly, and the die assembly plate is provided with a through hole penetrating up and down and allowing the positioning ring assembly to stretch into. The left end and the right end of the needle plate assembly are each fixedly connected with a lifting table, the left end and the right end of the base are each provided with a lifting device used for driving the lifting table to move up and down, the tops of the two lifting tables are each fixedly provided with a support, and the tops of the two supports are each fixedly provided with a first air cylinder extending left and right. The left end and the right end of the mold closing plate are each provided with a movable groove, the left end and the right end of each movable block are each provided with an insertion groove, the two insertion grooves are communicated with the movable grooves respectively, and the insertion blocks are inserted into the insertion grooves. According to the utility model, the demoulding efficiency is obviously improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model relates to a forming mold, in particular to a silicone forming mold. Background Art

[0002] In the field of silicone molding, traditional silicone molding molds are mainly composed of key components such as the base, shaping plate, closing plate, and circular movable block. The specific production process is as follows:

[0003] During the injection molding stage, the closing plate is pressed downward to tightly fit the base, forming a closed molding space. Subsequently, silicone material is injected into the molding groove. At this point, a circular movable block is inserted into the pre-set mounting hole until it engages and stops, ensuring the silicone material acquires the correct shape and size within the mold. After a period of cooling within the mold, the silicone material gradually solidifies and takes the desired shape. After cooling and setting, the demolding process begins. First, the closing plate is lifted upward to relieve pressure on the silicone product. Then, by lifting the bottom ejector block, the entire needle plate system is lifted, pushing each sizing ring upward and through the mounting hole. This process ejects the movable block, achieving a preliminary separation of the silicone product from the mold. Next, by pulling down the outermost ejector block in the active demolding assembly, the connected needle plates are reset, and the corresponding sizing ring is then pulled out of the product using the reset lever. This process proceeds from the outside inward until all sizing rings are ejected. Finally, the reset lever can be directly removed, allowing the molded product to be removed.

[0004] The silicone molding mold designed with the above technical solution has played an important role in the molding process of silicone products, but there are still some obvious problems: in the process of inserting the movable block into the mounting hole and limiting it with the mounting groove, if the movable block is stuck too tightly, it will directly affect the flow and distribution of the silicone material, which may cause defects in the silicone product, such as bubbles, cracks or uneven shapes. When the movable block is stuck, it becomes very difficult to manually remove the movable block, which not only increases the labor intensity of the operator, but may also damage the mold or product due to improper operation. Due to the obstruction that the movable block may cause and the difficulty of manual removal, the traditional demolding process often takes a long time, thereby reducing the overall production efficiency.

[0005] In summary, existing silicone molding molds have certain limitations during the injection and demolding processes, particularly in terms of handling the interaction between the movable block and the silicone material, as well as demolding efficiency. Therefore, it is necessary to improve and optimize existing molding molds to address these issues and improve production efficiency. Utility Model Content

[0006] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a forming mold.

[0007] The technical solution of the utility model is: a forming mold, including a base, a shaping plate and a closing mold plate, a needle plate assembly is fixed on the top of the base, a plurality of ejector pins extending up and down are fixed on the needle plate assembly, a positioning ring assembly is installed in the shaping plate, the ejector pin leans against the lower end of the positioning ring assembly, the closing mold plate leans against the top of the shaping plate, the closing mold plate has a through hole that runs through the top and down for the positioning ring assembly to extend into, a movable block is placed in the through hole, the left and right ends of the needle plate assembly are fixedly connected to a lifting platform, the left and right ends of the base are equipped with a lifting device for driving the lifting platform to move up and down, a bracket is fixed on the top of the two lifting platforms, a first cylinder extending left and right is fixed on the top of the two brackets, an insert block is fixed on the end of the piston rod of the two first cylinders, the left and right ends of the closing mold plate are provided with a movable groove that runs through the left and right for the insert block to extend into, the left and right ends of the movable block have a slot, the two slots are respectively connected to a movable slot, and the slots are for inserting the insert block.

[0008] Furthermore, the lifting device includes a second cylinder and a lifting plate. The second cylinder is fixed on the upper end of the base extending up and down. The piston rod end of the upper end of the second cylinder is fixedly connected to the lifting plate, and the lifting plate is fixedly connected to the bottom of the lifting platform.

[0009] Furthermore, the upper end of the movable groove is open.

[0010] Furthermore, during demoulding, the first cylinder controls the insert block to be inserted into the slot of the movable block, the second cylinder controls the lifting platform to move upward and drives the first cylinder and the insert block to move upward together, and the insert block drives the movable block to move upward so that the movable block moves out of the through hole.

[0011] The beneficial effects of applying a forming mold provided by the utility model are as follows: By introducing an insert block controlled by a first cylinder and a lifting device driven by a second cylinder, the utility model realizes the automatic removal process of the movable block. During the demolding stage, the first cylinder can control the insert block to be inserted into the slot of the movable block, and then the second cylinder drives the lifting platform to rise, driving the insert block and the movable block to move up together, so that the movable block can be easily moved out of the through hole. This process greatly simplifies the complex steps of traditional manual disassembly of the movable block, significantly improves the demolding efficiency, and reduces the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle;

[0014] Figure 3 It is a structural schematic diagram of the combined template of the present utility model;

[0015] Figure 4This is a structural diagram of the utility model after removing the movable block.

[0016] As shown in the figure: 1-base, 2-forming plate, 3-combining template, 31-through hole, 32-movable groove, 4-needle plate assembly, 5-thimble, 6-positioning ring assembly, 7-movable block, 71-slot, 8-lifting platform, 9-first cylinder, 10-insertion block, 11-second cylinder, 12-lifting plate, 13-bracket. DETAILED DESCRIPTION

[0017] In order to more intuitively and completely understand the technical solution of the present invention, the following non-limiting features are described in conjunction with the accompanying drawings of the present invention:

[0018] like Figure 1 — Figure 4 As shown, a forming mold includes a base 1, a shaping plate 2 and a closing plate 3. A needle plate assembly 4 is fixed on the top of the base 1. A plurality of ejector pins 5 extending up and down are fixed on the needle plate assembly 4. A positioning ring assembly 6 is installed in the shaping plate 2. The ejector pin 5 leans against the lower end of the positioning ring assembly 6. The closing plate 3 leans against the top of the shaping plate 2. The closing plate 3 has a through hole 31 that passes through from top to bottom and is for the positioning ring assembly 6 to extend into. A movable block 7 is placed in the through hole 31. The left and right ends of the needle plate assembly 4 are fixedly connected to a lifting platform 8. The base 1 is Each end of the assembly is equipped with a lifting device for moving the lifting platform 8 up and down. A bracket 13 is fixed to the top of each lifting platform 8. A first cylinder 9 extending left and right is fixed to the top of each bracket 13. An insert 10 is fixed to the end of the piston rod of each first cylinder 9. Each end of the assembly 3 is provided with a movable groove 32 that extends left and right and into which the insert 10 extends. Each end of the movable block 7 has a slot 71, which is connected to a movable groove 32 and receives the insert 10. The positioning ring assembly 6 is provided with a molding groove (position shown in the figure), into which silicone material can be injected.

[0019] like Figure 1 As shown, the lifting device includes a second cylinder 11 and a lifting plate 12. The second cylinder 11 extends vertically and is fixed to the top of the base 1. The piston rod end of the second cylinder 11 is fixedly connected to the lifting plate 12, and the lifting plate 12 is fixedly connected to the bottom of the lifting platform 8. When the second cylinder 11 is in operation, the vertical movement of the lifting plate 12 can drive the lifting platform 8 to move up and down. The lifting platform 8 then drives the bracket 13, the first cylinder 9, and the insert 10 to move up and down.

[0020] like Figure 3 As shown, the upper end of the movable groove 32 is open. The purpose of the upper end of the movable groove 32 is to facilitate the upward and downward movement of the piston rod of the first cylinder 9 and the insert block 10 during the upward and downward movement of the first cylinder 9.

[0021] During demoulding, the first cylinder 9 controls the insert block 10 to be inserted into the slot 71 of the movable block 7, and the second cylinder 11 controls the lifting platform 8 to move upward and drives the first cylinder 9 and the insert block 10 to move upward together. The insert block 10 drives the movable block 7 to move upward, so that the movable block 7 moves out of the through hole 31.

[0022] During use, the present invention automates the removal of the movable block 7 by introducing an insert block 10 controlled by the first cylinder 9 and a lifting mechanism driven by the second cylinder 11. During the demolding phase, the first cylinder 9 controls the insert block 10 to be inserted into the slot 71 of the movable block 7. The second cylinder 11 then drives the lifting platform 8 upward, driving the insert block 10 and the movable block 7 upward together, allowing the movable block 7 to be easily removed from the through-hole 31. This process greatly simplifies the complex steps of traditional manual removal of the movable block 7, significantly improves demolding efficiency, and reduces the operator's labor intensity.

[0023] Of course, the above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All simple modifications and equivalent structural changes made using the contents of the description and drawings of the present invention should be included in the patent protection scope of the present invention.

Claims

1. A forming mold, comprising a base, a shaping plate and a closing plate, a needle plate assembly fixed to the top of the base, a plurality of ejector pins extending up and down are fixed to the needle plate assembly, a positioning ring assembly is installed in the shaping plate, the ejector pins lean against the lower end of the positioning ring assembly, the closing plate leans against the top of the shaping plate, the closing plate has a through hole that passes through from top to bottom and is for the positioning ring assembly to extend into, a movable block is placed in the through hole, the left and right ends of the needle plate assembly are fixedly connected to a lifting platform, and the left and right ends of the base are equipped with a lifting device for driving the lifting platform to move up and down, characterized in that: A bracket is fixed on the top of each lifting platform, and a first cylinder extending left and right is fixed on the top of each bracket. An insert block is fixed on the end of the piston rod of each first cylinder. The left and right ends of the template are provided with a movable groove that runs through the left and right and is for the insert block to extend into. The left and right ends of the movable block have a slot, and the two slots are connected to a movable slot respectively, and the slots are for the insert block to be inserted.

2. A molding die according to claim 1, characterized in that: The lifting device includes a second cylinder and a lifting plate. The second cylinder is fixed on the upper end of the base extending up and down. The piston rod end of the upper end of the second cylinder is fixedly connected to the lifting plate, and the lifting plate is fixedly connected to the bottom of the lifting platform.

3. A molding die according to claim 1, characterized in that: The upper end of the movable groove is open.

4. A forming mold according to claim 1, characterized in that: During demoulding, the first cylinder controls the insert block to be inserted into the slot of the movable block, the second cylinder controls the lifting platform to move upward and drives the first cylinder and the insert block to move upward together, and the insert block drives the movable block to move upward so that the movable block moves out of the through hole.

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