A mold bin pressure relief opening device
By setting vent holes and mounting slots on the upper plate of the mold hopper, and using high-pressure gas to lift the upper plate of the hopper, the problem of the hopper being difficult to open under high pressure is solved, and a damage-free opening effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN BOHAI RUBBER & PLASTIC CO LTD
- Filing Date
- 2025-07-06
- Publication Date
- 2026-06-12
AI Technical Summary
The existing mold hopper is difficult to open easily under high pressure, which makes the operation complicated and easily damages the mold and equipment, increasing maintenance costs.
A pressure relief and opening device for a mold hopper is adopted. By setting vent holes and mounting slots on the upper plate of the hopper, the upper plate of the hopper is lifted by high-pressure gas in a non-contact manner, so as to easily open the hopper.
It enables contactless opening of the hopper, avoiding damage to molds and equipment, and reducing maintenance costs and frequency.
Smart Images

Figure CN224349569U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of molds, specifically a mold hopper pressure relief and opening device. Background Technology
[0002] As companies become increasingly demanding in their cost-effectiveness control requirements, some mold structures have revealed inefficiencies in the production process. These mold structures are characterized by a sealed hopper under high pressure, which is difficult to open easily. This not only leads to operational complexity but also triggers a series of chain reactions.
[0003] Currently, the opening of hot press molds often requires manual prying, which is not only inefficient but also easily damages the mold and equipment. The use of prying not only causes scratches and wear on the mold itself but also damages the side pull plate of the device for opening the material hopper due to uneven force, increasing maintenance costs and replacement frequency. Utility Model Content
[0004] To overcome the above-mentioned shortcomings, this utility model provides a mold hopper pressure relief and opening device.
[0005] The technical solution adopted by this utility model is as follows:
[0006] A pressure relief and opening device for a mold hopper includes a hopper top plate; an installation groove is formed in the middle of the bottom of the hopper top plate, and a vent hole is formed in the middle of the top of the hopper top plate, the vent hole penetrating the hopper top plate; the installation groove is a recessed groove, the bottom end of the vent hole is connected to the middle of the installation groove, an overflow baffle is provided in the installation groove, the middle of the overflow baffle abuts against the bottom end of the vent hole, slots are formed at the left and right ends of the bottom of the overflow baffle, a pointed rod is provided in the slot, the pointed rod penetrates the slot, and the bottom of the pointed rod is fixedly connected to the slot; a circular hole is provided on the upper inner wall of the installation groove, the circular hole extends into the interior of the hopper top plate, the pointed rod is in the circular hole, the pointed rod slides with the inner wall of the circular hole, and the overflow baffle covers the circular hole; a baffle is fixedly connected to the outer wall of the hopper top plate.
[0007] The beneficial effects of this utility model are:
[0008] This invention achieves non-contact lifting by injecting high-pressure gas into the vent, solving the problem of opening sealed silos without requiring strenuous physical labor. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a sectional view of the present invention;
[0011] Figure 3 This is the left view of this utility model;
[0012] Figure 4 yes Figure 3 Cross-sectional view at point AA;
[0013] Figure 5 This is a schematic diagram of one embodiment of the present invention.
[0014] The reference numerals in all the attached drawings are as follows: 1. Upper plate of hopper; 2. Vent hole; 3. Mounting groove; 4. Overflow baffle; 5. Slot hole; 6. Pointed smooth rod; 7. Round hole; 8. Baffle; 9. Lower mold; 10. Rubber. Detailed Implementation
[0015] like Figure 1-5 As shown: A mold hopper pressure relief and opening device includes a hopper upper plate 1; an installation groove 3 is opened in the middle of the bottom of the hopper upper plate 1, and a vent hole 2 is opened in the middle of the top of the hopper upper plate 1, the vent hole 2 penetrates the hopper upper plate 1, the installation groove 3 is a groove shape, the bottom end of the vent hole 2 is connected to the middle of the installation groove 3, an overflow baffle 4 is provided in the installation groove 3, the middle of the overflow baffle 4 abuts against the bottom end of the vent hole 2, slots 5 are opened at the left and right ends of the bottom of the overflow baffle 4, a pointed rod 6 is provided in the slot 5, the pointed rod 6 penetrates the slot 5, the bottom of the pointed rod 6 is fixedly connected to the slot 5, a round hole 7 is provided on the upper inner wall of the installation groove 3, the round hole 7 extends into the interior of the hopper upper plate 1, the pointed rod 6 is in the round hole 7, the pointed rod 6 slides with the inner wall of the round hole 7, and the overflow baffle 4 covers the round hole 7; a baffle 8 is fixedly connected to the outer wall of the hopper upper plate 1.
[0016] The lower mold 9 is a square box with an opening at the top. The upper hopper plate 1 is a square plate, and its bottom is inserted into the upper opening of the lower mold 9. The baffle 8 is located on the upper part of the lower mold 9, and the rubber 10 is placed inside the lower mold 9. The upper hopper plate 1 and the lower mold 9 are pressed together by hot pressing to form the rubber 10. After the rubber 10 is pressed, a near-vacuum state is formed inside the lower mold 9, making it difficult to open the upper hopper plate 1 easily. High-pressure gas is then injected into the vent 2 by a high-pressure air pump, and the overflow baffle 4 pushes the upper hopper plate 1 open, separating it from the lower mold 9.
Claims
1. A pressure relief and opening device for a mold hopper, comprising a hopper upper plate (1), characterized in that, A mounting groove (3) is provided at the bottom center of the upper plate (1) of the silo, and a vent hole (2) is provided at the top center of the upper plate (1). The vent hole (2) penetrates the upper plate (1). The mounting groove (3) is a groove shape. The bottom end of the vent hole (2) is connected to the middle of the mounting groove (3). An overflow baffle (4) is provided in the mounting groove (3). The middle of the overflow baffle (4) abuts against the bottom end of the vent hole (2). Slots (5) are provided at the left and right ends of the bottom of the overflow baffle (4). The hopper has a pointed rod (6) inside, which passes through the slot (5). The bottom of the pointed rod (6) is fixedly connected to the slot (5). A round hole (7) is provided on the upper inner wall of the mounting slot (3). The round hole (7) extends into the upper plate (1) of the hopper. The pointed rod (6) is inside the round hole (7). The pointed rod (6) slides with the inner wall of the round hole (7). The overflow baffle (4) covers the round hole (7). A baffle (8) is fixedly connected to the outer wall of the upper plate (1) of the hopper.