Molding die for rubber o-ring

Abstract

This utility model provides a molding die for rubber O-rings, belonging to the field of molding dies. It includes a base with replacement components inside the front and rear, and ejector components inside the sides. When O-rings of different thicknesses need to be molded, pressing the push plates on the front and rear sides causes them to slide into the slots, driving the side plates to slide within the side grooves. This pulls the mold plate upwards, causing the insert plate to disengage from the slot, completing the individual disassembly of the mold plate. When it is necessary to eject the molded O-rings from the mold groove, the motor is controlled to rotate, driving the second bevel gear connected to it to rotate. This meshes with the first bevel gear, driving the screw connected to it to rotate. Through the threaded engagement on the outer wall, the ejector plate moves upwards. With the limiting plate embedded in the limiting groove, the ejector plate stably moves upwards from the telescopic groove, ejecting the molded rubber rings from the mold groove upwards, achieving rapid ejection and improving the convenience of ejection from the molding die.

Description

Technical Field

[0001] This utility model relates to the field of molding dies, and more specifically, to molding dies for rubber O-rings. Background Technology

[0002] Molds are tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, stamping, and stretching. With the rapid development of polymer materials, rubber molds are closely related to people's lives. Small-diameter rubber rings are widely used in various applications to meet diverse needs. Rubber O-rings are piston seals used in reciprocating hydraulic cylinders and are made of polyurethane (TPU), CPU, and rubber.

[0003] A search revealed that Chinese patent CN222290807U discloses a molding die for a precision rubber O-ring, comprising a lower die and an upper die. Both the lower and upper dies have grooves on one side, and the upper die has an inlet at its top, connected to the grooves. In this design, to demold the finished rubber ring, the user can turn the handle. Turning the handle counter-clockwise causes the insertion rod to slide outwards from the mounting block, thus disengaging the limiting block from the insertion block. After the limiting block disengages, the upper die resets, and the finished rubber ring can then be removed from the groove. This design provides a limiting position between the upper and lower dies, and when demolding the rubber ring, turning the handle allows the upper die to automatically reset due to the spring return, facilitating the removal of the finished rubber ring and improving the ease of use. However, the following drawbacks remain:

[0004] (1) The mold groove size of the existing molding mold is fixed. When producing O-rings, multiple sizes of products are often required. However, the fixed mold groove size cannot produce rubber rings of different sizes. Therefore, multiple molds of different models are required, which increases the cost and reduces the versatility of the existing molding mold.

[0005] (2) The existing molding die rubber ring is stuck in the mold groove after molding, and manual material removal is required to complete the material discharge operation, which affects production efficiency in mass production.

[0006] Therefore, we made improvements and proposed a molding die for rubber O-rings. Utility Model Content

[0007] The purpose of this invention is to address the problem that existing molding dies have fixed mold groove dimensions. When producing O-rings, various sizes of products are often required, but the fixed mold groove dimensions cannot produce rubber rings of different sizes. This necessitates the use of multiple molds of different models, increasing costs, reducing the versatility of existing molding dies, and causing the rubber rings to become stuck in the mold groove after molding, requiring manual removal to complete the unloading operation, which affects production efficiency in mass production.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] A molding die for rubber O-rings was developed to improve the above-mentioned problems.

[0010] The present invention is as follows:

[0011] Includes a base, with replacement components installed inside the front and rear of the base, and top-feeding components installed inside the sides of the base;

[0012] The replacement component includes a mold groove inside the center of the base, a slot is provided on the lower side of the center of the mold groove, an insert plate is detachably inserted into the slot, and a mold plate is provided on the upper outer wall of the insert plate.

[0013] The ejector assembly includes telescopic grooves opened at the lower ends of the left and right sides of the mold groove. A screw is installed inside the telescopic groove. A discharge plate is fitted on the outer wall of the screw. A limit groove is opened on the side wall of the telescopic groove. A limit plate that cooperates with the limit groove is provided on the side wall of the discharge plate.

[0014] As a preferred technical solution of this utility model, the front and rear side walls of the insert plate are provided with inner grooves, and a card plate is movably arranged inside the inner grooves. A side groove is provided on the side of the inner groove near the center of the insert plate, and a side plate that cooperates with the side groove is provided on the side wall of the card plate.

[0015] As a preferred technical solution of this utility model, a first telescopic rod is provided on the side plate near the center of the insert plate, and a first spring is fitted on the outer wall of the first telescopic rod.

[0016] As a preferred technical solution of this utility model, the slot has a slot that cooperates with the card plate on the front and rear sides, a push plate is movably arranged inside the slot, a side groove is provided on the side wall of the slot, and a side plate that cooperates with the side groove is provided on the side wall of the push plate.

[0017] As a preferred technical solution of this utility model, a second telescopic rod is connected to the side wall of the side plate, and a second spring is fitted onto the outer wall of the second telescopic rod.

[0018] As a preferred technical solution of this utility model, a bottom groove is provided on the lower side of the telescopic groove, a first conical gear connected to the screw is provided on the inner wall of the upper end of the bottom groove, a second conical gear that cooperates with the first conical gear is provided on the inner wall of the bottom groove away from the center of the base, and a motor is connected to the outer end of the second conical gear.

[0019] As a preferred technical solution of this utility model, lifting rods are provided on both sides of the upper end of the base, and a top plate is slidably fitted on the upper end of the lifting rods, with an injection pipe provided inside the center of the top plate.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the solution of this utility model:

[0022] 1. Using a set of insert plates, clamping plates, side plates, a first telescopic rod, a push plate, side plates, and a mold plate, when different thicknesses of O-rings need to be formed, pressing the front and rear push plates causes them to slide into the clamping slots, driving the side plates to slide in the side grooves. This retracts the second telescopic rod and the second spring, simultaneously pushing the clamping plate out of the clamping slots, causing it to retract into the inner groove. This allows the mold plate to be pulled upwards, causing the insert plate to detach from the slot, completing the individual disassembly of the mold plate. After selecting a mold plate with the corresponding diameter, inserting its lower end into the slot, the inclined surfaces of the front and rear clamping plates are squeezed by the slot. The inclined surfaces convert the pressure into lateral force, causing the clamping plate to slide into the inner groove, driving the side plates to slide in the side grooves. This squeezes and retracts the first telescopic rod and the first spring. When the inserting plate is fully inserted into the slot, the first telescopic rod and the first spring push the side plates, causing the clamping plate to insert into the aligned clamping slots, thus completing the quick replacement and fixing of the mold plate. This allows for the replacement of mold plates with different diameters, improving the versatility of the molding die.

[0023] 2. By using the first bevel gear, second bevel gear, screw, discharge plate, and limiting plate, when it is necessary to discharge the O-ring rubber ring formed in the mold groove, the motor is controlled to rotate, driving the second bevel gear connected to it to rotate. This meshes with the first bevel gear, which in turn drives the screw connected to it to rotate. Through the threaded engagement on the outer wall, the discharge plate is driven to move upward. With the limiting plate embedded in the limiting groove, the discharge plate moves steadily upward from the telescopic groove, pushing the formed rubber ring in the mold groove upward, achieving rapid discharge and improving the discharge convenience of the molding mold. Attached Figure Description

[0024] Figure 1 A front view schematic diagram of the overall structure of the molding die for the rubber O-ring provided by this utility model;

[0025] Figure 2 A schematic diagram of the replacement component structure of the molding die for the rubber O-ring provided by this utility model;

[0026] Figure 3 The molding die for the rubber O-ring provided by this utility model Figure 2 A magnified schematic diagram of part A in the middle;

[0027] Figure 4 A schematic diagram of the ejector assembly structure of the molding die for the rubber O-ring provided by this utility model.

[0028] The image shows:

[0029] 1. Base; 2. Lifting rod; 3. Top plate; 4. Injection pipe; 501. Mold groove; 502. Slot; 503. Insert plate; 504. Inner groove; 505. Clamping plate; 506. Side groove; 507. Side plate; 508. First telescopic rod; 509. First spring; 510. Clamping groove; 511. Push plate; 512. Side groove; 513. Side plate; 514. Second telescopic rod; 515. Second spring; 516. Mold plate; 601. Telescopic groove; 602. Screw; 603. Discharge plate; 604. Limiting groove; 605. Limiting plate; 606. Bottom groove; 607. First bevel gear; 608. Second bevel gear; 609. Motor. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] like Figure 1-4 As shown, this embodiment proposes a molding die for a rubber O-ring, including a base 1, with replacement components arranged inside the front and rear of the base 1, and ejector components arranged inside the sides of the base 1.

[0035] The replacement components include a mold groove 501 opened inside the center of the base 1, a slot 502 opened on the lower side of the center of the mold groove 501, a detachable insert plate 503 inserted into the slot 502, and a mold plate 516 provided on the upper outer wall of the insert plate 503.

[0036] The ejector assembly includes telescopic grooves 601 opened at the lower ends of the left and right sides of the mold groove 501. A screw 602 is installed inside the telescopic groove 601. A discharge plate 603 is fitted on the outer wall of the screw 602. A limiting groove 604 is opened on the side wall of the telescopic groove 601. A limiting plate 605 that cooperates with the limiting groove 604 is provided on the side wall of the discharge plate 603.

[0037] like Figure 3 As shown, the front and rear side walls of the insert plate 503 are provided with inner grooves 504. A retaining plate 505 is movably disposed inside the inner groove 504. A side groove 506 is provided on the side of the inner groove 504 near the center of the insert plate 503. A side plate 507 is provided on the side wall of the retaining plate 505 to cooperate with the side groove 506. The retaining plate 505 slides into the inner groove 504, causing the side plate 507 to slide in the side groove 506, thus compressing and contracting the first telescopic rod 508 and the first spring 509.

[0038] like Figure 3 As shown, a first telescopic rod 508 is provided on the side plate 507 near the center of the insert plate 503. A first spring 509 is fitted on the outer wall of the first telescopic rod 508. The first telescopic rod 508 and the first spring 509 are compressed and contracted. When the insert plate 503 is fully inserted into the slot 502, the first telescopic rod 508 and the first spring 509 push the side plate 507 to drive the card plate 505 to insert into the aligned card slot 510, thereby completing the quick replacement and fixing of the mold plate 516.

[0039] like Figure 2 As shown, slot 502 has slots 510 on the front and back sides that cooperate with the card plate 505. A push plate 511 is movably installed inside the slot 510. A side groove 512 is provided on the side wall of the slot 510. A side plate 513 is provided on the side wall of the push plate 511 that cooperates with the side groove 512. When it is necessary to form O-rings of different thicknesses, press the push plates 511 on the front and back sides to make them slide into the slot 510, which drives the side plate 513 to slide in the side groove 512. This causes the second telescopic rod 514 and the second spring 515 to retract. At the same time, the card plate 505 is pushed out of the slot 510, causing the card plate 505 to retract into the inner groove 504. Then, the mold plate 516 can be pulled upward to drive the insert plate 503 out of the slot 502, completing the individual disassembly of the mold plate 516.

[0040] like Figure 2As shown, a second telescopic rod 514 is connected to the side wall of the side plate 513. A second spring 515 is fitted on the outer wall of the second telescopic rod 514. When the second telescopic rod 514 and the second spring 515 retract, the locking plate 505 is pushed out of the locking groove 510, causing the locking plate 505 to retract into the inner groove 504.

[0041] like Figure 4 As shown, a bottom groove 606 is provided on the lower side of the telescopic groove 601. A first bevel gear 607 connected to the screw 602 is provided on the inner wall of the upper end of the bottom groove 606. A second bevel gear 608 that cooperates with the first bevel gear 607 is provided on the inner wall of the bottom groove 606 away from the center of the base 1. A motor 609 is connected to the outer end of the second bevel gear 608. When it is necessary to discharge the O-ring formed in the mold groove 501, the motor 609 is controlled to run and drive the second bevel gear 608 connected to it to rotate, which in turn drives the first bevel gear 607 to rotate.

[0042] like Figure 4 As shown, lifting rods 2 are provided on both sides of the upper end of the base 1. A top plate 3 is slidably fitted on the upper end of the lifting rods 2. An injection pipe 4 is provided inside the center of the top plate 3. When the screw 602 rotates, the discharge plate 603 is driven to move upward through the thread engagement provided on the outer wall. Under the limitation of the limiting plate 605 embedded in the limiting groove 604, the discharge plate 603 moves upward stably from the telescopic groove 601, pushing the molded rubber ring in the mold groove 501 upward, thus achieving rapid material discharge.

[0043] Specifically, when using this molding die: When it is necessary to mold O-rings of different thicknesses, press the front and rear push plates 511 to make them slide into the slots 510, causing the side plates 513 to slide in the side grooves 512, retracting the second telescopic rod 514 and the second spring 515, and simultaneously pushing the clamping plate 505 out of the slots 510, causing the clamping plate 505 to retract into the inner groove 504. Then, pull the mold plate 516 upward to drive the insert plate 503 out of the slot 502 to complete the individual disassembly of the mold plate 516. After selecting the mold plate 516 with the corresponding diameter size as needed, insert the insert plate 503 at its lower end into the slot 502. At the same time as insertion, the inclined surfaces of the front and rear clamping plates 505 are squeezed by the slot 502. The inclined surfaces convert the pressure into lateral force, which allows the clamping plate 505 to slide into the inner groove 504, causing the side plate 507 to slide in the side groove 506, and retracting the first telescopic rod 508 and the first spring 515. 09. During compression and contraction, when the insert plate 503 is fully inserted into the slot 502, the first telescopic rod 508 and the first spring 509 push the side plate 507 to drive the clamping plate 505 to insert into the aligned clamping slot 510, thus completing the quick replacement and fixing of the mold plate 516. This allows for the replacement of the mold plate 516 with different diameter sizes, improving the versatility of the molding die. When it is necessary to discharge the O-ring rubber ring formed in the mold groove 501, the control motor 609 is turned to drive the second bevel gear 608 connected to it to rotate. This meshes and drives the first bevel gear 607 to rotate, which in turn drives the screw 602 connected to it to rotate. Through the threaded engagement on the outer wall, the discharge plate 603 is moved upward. Under the limitation of the limiting plate 605 embedded in the limiting groove 604, the discharge plate 603 is stably moved upward from the telescopic groove 601, pushing the formed rubber ring in the mold groove 501 upward, achieving rapid discharge and improving the discharge convenience of the molding die.

[0044] All technical features in this embodiment can be freely combined according to actual needs.

[0045] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A molding die for rubber O-rings, comprising a base (1), characterized in that: Replacement components are provided inside the front and rear of the base (1), and top material components are provided inside the sides of the base (1). The replacement component includes a mold groove (501) opened inside the center of the base (1), a slot (502) is opened on the lower side of the center of the mold groove (501), a plug plate (503) is detachably inserted inside the slot (502), and a mold plate (516) is provided on the upper outer wall of the plug plate (503). The top material assembly includes telescopic grooves (601) opened at the lower ends of the left and right sides of the mold groove (501). A screw (602) is installed inside the telescopic groove (601). A discharge plate (603) is fitted on the outer wall of the screw (602). A limiting groove (604) is opened on the side wall of the telescopic groove (601). A limiting plate (605) that cooperates with the limiting groove (604) is provided on the side wall of the discharge plate (603).

2. The molding die for the rubber O-ring according to claim 1, characterized in that, The insert plate (503) has an inner groove (504) on its front and rear side walls. A retaining plate (505) is movably installed inside the inner groove (504). A side groove (506) is provided on the side of the inner groove (504) near the center of the insert plate (503). A side plate (507) is provided on the side wall of the retaining plate (505) to cooperate with the side groove (506).

3. The molding die for the rubber O-ring according to claim 2, characterized in that, A first telescopic rod (508) is provided on the side plate (507) near the center of the insert plate (503), and a first spring (509) is fitted on the outer wall of the first telescopic rod (508).

4. The molding die for the rubber O-ring according to claim 2, characterized in that, The slot (502) has slots (510) on its front and rear sides that cooperate with the card plate (505). A push plate (511) is movably arranged inside the slot (510). A side groove (512) is provided on the side wall of the slot (510). A side plate (513) is provided on the side wall of the push plate (511) that cooperates with the side groove (512).

5. The molding die for the rubber O-ring according to claim 4, characterized in that, The side plate (513) is connected to a second telescopic rod (514), and a second spring (515) is fitted on the outer wall of the second telescopic rod (514).

6. The molding die for the rubber O-ring according to claim 1, characterized in that, The expansion groove (601) has a bottom groove (606) on its lower side. The inner wall of the upper end of the bottom groove (606) is provided with a first bevel gear (607) connected to the screw (602). The inner wall of the bottom groove (606) away from the center of the base (1) is provided with a second bevel gear (608) that cooperates with the first bevel gear (607). The outer end of the second bevel gear (608) is connected to a motor (609).

7. The molding die for the rubber O-ring according to claim 1, characterized in that, The base (1) has lifting rods (2) on both sides of its upper end. The upper end of the lifting rods (2) is slidably fitted with a top plate (3). The top plate (3) has an injection pipe (4) inside its center.

Images