Hydraulic part withdrawing device of injection mold

Abstract

The utility model discloses a hydraulic retreating device for an injection mold, which relates to the technical field of injection molds and comprises a mold, and a sliding chute is formed in one side of the mold; a main sliding block is installed in the sliding groove in a sliding mode. An auxiliary sliding block is slidably arranged at the top end of one side of the main sliding block in a limiting mode. Limiting blocks are fixedly connected to the front side and the rear side of the auxiliary sliding block. L-shaped limiting grooves are formed in the front side and the rear side of the inner wall of the sliding groove. The limiting block is slidably mounted in the L-shaped limiting groove; grooves are formed in the positions, corresponding to the two L-shaped limiting grooves, of the upper end face of the mold. Liquid storage tanks are fixedly mounted in the grooves; rotating grooves are formed in the positions, corresponding to the L-shaped limiting grooves, of the side wall of the liquid storage tank; a liquid storage tank, a rotating groove, a gear, a first through hole, a second through hole, a third through hole and a toothed plate are arranged; in the workpiece returning process, lubricating oil can be automatically added, clamping or stopping in the workpiece returning process is avoided, manual operation is not needed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to a hydraulic part ejection device for an injection mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are high production speed, high efficiency, automated operation, a variety of flower patterns and colors, the shape can range from simple to complex, the size can range from large to small, and the product size is precise, the product is easy to update, and it can form parts with complex shapes.

[0003] A hydraulic part ejection device for an injection mold disclosed in Chinese Patent CN220198452U includes a mold. A part ejection mechanism is provided on one side of the mold. The part ejection mechanism includes a main slider. One end of the top of the main slider is slidably connected with a secondary slider. A transverse shaping part is provided on one side of the main slider. A longitudinal shaping part is provided on the top of the secondary slider. A slide rod is fixedly installed on one side of the secondary slider. A blocking block is fixedly installed at the top end of the slide rod. A sliding sleeve is sleeved outside the slide rod. The sliding sleeve is fixedly connected with the main slider.

[0004] The above-mentioned existing device has the following defects when in use: the part ejection device makes the secondary slider move horizontally with the main slider only after moving downward relative to the mold body to a certain position by setting a limiting groove; the limiting block on the secondary slider needs to keep the lubrication state with the limiting groove. If the lubrication degree between the limiting block and the limiting groove is insufficient, it is easy to cause the secondary slider to get stuck or stop during the movement, thereby affecting the production efficiency. Therefore, it is necessary to supplement lubricant in the limiting groove to ensure the lubrication degree in the limiting groove, and the part ejection device can only supplement lubricant manually by an operator; thus, the production efficiency is relatively low.

[0005] To solve the above problems, the utility model proposes a hydraulic part ejection device for an injection mold. Content of the Utility Model

[0006] To solve the problems in the background art, the utility model proposes a hydraulic part ejection device for an injection mold.

[0007] To achieve the above object, the utility model provides the following technical solution: A hydraulic part ejection device for an injection mold includes a mold. A chute is formed on one side of the mold; a main slider is slidably installed inside the chute; a secondary slider is slidably and limitedly arranged at the top end of one side of the main slider; limiting blocks are fixedly connected to both the front and rear sides of the secondary slider; L-shaped limiting grooves are formed on both the front and rear sides of the inner wall of the chute; the limiting blocks are slidably installed inside the L-shaped limiting grooves.

[0008] Grooves are provided on the upper end surface of the mold at positions corresponding to the two L-shaped limit grooves; liquid storage tanks are fixedly installed inside the grooves; rotating grooves are provided on the side walls of the liquid storage tanks at positions corresponding to the L-shaped limit grooves; gears are sealed and rotatably installed inside the rotating grooves.

[0009] There is a gap between one side of the liquid storage tank corresponding to the gear and the groove; the side of the gear away from the rotating groove extends out of the rotating groove; the gear is sealed and rotatably connected with the side wall of the groove.

[0010] A first through hole is provided at the inner top of the L-shaped limiting groove; a second through hole is provided on the gear; a third through hole is provided inside the rotating groove; the third through hole is communicated with the inside of the liquid storage tank; the first through hole, the second through hole and the third through hole correspond to each other.

[0011] A toothed plate is slidably inserted at the position corresponding to the gear inside the mold; the toothed plate is meshed and connected with the gear; the toothed plate slides through the inside of the mold; one end of the toothed plate is fixedly connected with the main slide block through a connecting rod.

[0012] Preferably, a cavity is formed on the upper end surface of the mold; the cavity is connected to the slide groove.

[0013] Preferably, a slope is provided on one side of the top of the main slider corresponding to the cavity; the auxiliary slider is slidably mounted on the slope of the main slider; a guide groove is provided on the slope; a guide block is fixedly connected to the bottom surface of the auxiliary slider; and the guide block is slidably mounted inside the guide groove.

[0014] Preferably, a bracket is fixedly mounted on the side wall of the mold corresponding to the slide groove; a hydraulic telescopic cylinder is fixedly mounted on the bracket; and the telescopic end of the hydraulic telescopic cylinder is fixedly connected to the side wall of the main slide block.

[0015] Preferably, a longitudinal shaping piece is fixedly mounted on the top of the auxiliary slider; and a transverse shaping piece is fixedly mounted on one side of the main slider.

[0016] Preferably, the output stroke of the hydraulic telescopic cylinder is greater than the extension length of the transverse shaping member.

[0017] Preferably, the change in height of the guide block when it moves in the guide groove is greater than the height of the longitudinal shaping member.

[0018] Beneficial Effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The hydraulic ejection device for injection molds is provided with a liquid storage tank, a rotating groove, a gear, a first through hole, a second through hole, a third through hole and a tooth plate, so that lubricating oil can be automatically added during the ejection process to avoid jamming or stopping during the ejection process, without manual operation, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the guide groove and the guide block of the present utility model;

[0024] Figure 3 It is a schematic diagram of the partial sectional structure of the present utility model;

[0025] Figure 4 For the present utility model Figure 3 The enlarged schematic diagram at position A;

[0026] Figure 5 For the present utility model Figure 4 The enlarged schematic diagram at position A-1.

[0027] Reference numerals: 1, mold; 2, chute; 3, main slider; 4, sub-slider; 5, limit block; 6, L-shaped limit groove; 7, liquid storage tank; 8, rotating groove; 9, gear; 10, first through hole; 11, second through hole; 12, third through hole; 13, toothed plate; 14, cavity; 15, hydraulic telescopic cylinder; 16, longitudinal shaping member; 17, transverse shaping member; 18, guide groove; 19, guide block. Specific embodiments

[0028] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be construed as a limitation on the protection scope of the present utility model.

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution: a hydraulic part ejection device for an injection mold, including a mold 1, and a chute 2 is provided on one side of the mold 1. A main slider 3 is slidably installed inside the chute 2.

[0030] A sub-slider 4 is slidably and limitably arranged at the top end of one side of the main slider 3.

[0031] Specifically, a slope is provided at the top end of the main slider 3 corresponding to one side of the cavity 14. The sub-slider 4 is slidably installed on the slope of the main slider 3. A guide groove 18 is provided on the slope. A guide block 19 is fixedly connected to the bottom surface of the sub-slider 4. The guide block 19 is slidably installed inside the guide groove 18.

[0032] Limit blocks 5 are fixedly connected to both the front and rear sides of the secondary slider 4. L-shaped limit grooves 6 are provided on both the front and rear sides of the inner wall of the sliding groove 2, and the limit blocks 5 are slidably installed inside the L-shaped limit grooves 6.

[0033] Grooves are provided on the upper end face of the mold 1 at positions corresponding to the two L-shaped limit grooves 6, and liquid storage tanks 7 are fixedly installed inside the grooves. Rotating grooves 8 are provided on the side walls of the liquid storage tanks 7 at positions corresponding to the L-shaped limit grooves 6. Gears 9 are rotatably installed inside the rotating grooves 8 in a sealed manner.

[0034] There is a gap between one side of the liquid storage tank 7 corresponding to the gear 9 and the groove. The side of the gear 9 facing away from the rotating groove 8 extends out of the rotating groove 8. The gear 9 is rotatably connected to the side wall of the groove in a sealed manner.

[0035] A first through hole 10 is provided at the top end inside the L-shaped limit groove 6. A second through hole 11 is provided on the gear 9. A third through hole 12 is provided inside the rotating groove 8. The third through hole 12 is communicated with the inside of the liquid storage tank 7. The first through hole 10, the second through hole 11, and the third through hole 12 correspond to each other.

[0036] Rack plates 13 are slidably inserted into the mold 1 at positions corresponding to the gears 9. The rack plates 13 are meshed with the gears 9. The rack plates 13 slide through the inside of the mold 1. One end of the rack plate 13 is fixedly connected to the main slider 3 through a connecting rod.

[0037] A cavity 14 is provided on the upper end face of the mold 1. The cavity 14 is communicated with the sliding groove 2. The plastic part is arranged inside the cavity 14.

[0038] Furthermore, a bracket is fixedly installed on the side wall of the mold 1 corresponding to the sliding groove 2. A hydraulic telescopic cylinder 15 is fixedly installed on the bracket. The telescopic end of the hydraulic telescopic cylinder 15 is fixedly connected to the side wall of the main slider 3.

[0039] Furthermore, a longitudinal shaping part 16 is fixedly installed at the top end of the secondary slider 4. A transverse shaping part 17 is fixedly installed on one side of the main slider 3.

[0040] To ensure that the transverse shaping part 17 can completely withdraw from the plastic part, the output stroke of the hydraulic telescopic cylinder 15 is greater than the extension length of the transverse shaping part 17.

[0041] To ensure that the longitudinal shaping part 16 can completely withdraw from the plastic part, the height change amount of the guide block 19 moving in the guide groove 18 is greater than the height of the longitudinal shaping part 16.

[0042] Working principle:

[0043] During use, the hydraulic telescopic cylinder 15 is started, and the telescopic end of the hydraulic telescopic cylinder 15 drives the main slider 3 to slide out of the interior of the mold 1 along the chute 2; thereby driving the transverse shaping member 17 to completely withdraw from the shaping member; during this process, through the arrangement of the guide groove 18 and the guide block 19, the secondary slider 4 slides downward relative to the main slider 3 along the guide groove 18; thereby causing the secondary slider 4 to move downward relative to the mold 1 to a certain position before following the main slider 3 to move horizontally. At this time, the limiting block 5 moves downward inside the L-shaped limiting groove 6. When the limiting block 5 moves to the bottom side of the L-shaped limiting groove 6, the secondary slider 4 moves horizontally to drive the limiting block 5 to move horizontally inside the L-shaped limiting groove 6; causing the longitudinal shaping member 16 to completely withdraw from the shaping member, completing the part withdrawal.

[0044] During this process; the movement of the main slider 3 drives the movement of the toothed plate 13 through the connecting rod; the movement of the toothed plate 13 drives the rotation of the gear 9; the rotation of the gear 9 causes the second through hole 11 on the gear 9 to correspond to the first through hole 10 and the third through hole 12; enabling the lubricating oil in the liquid storage tank 7 to flow out; entering the interior of the L-shaped limiting groove 6 through the first through hole 10, the second through hole 11, and the third through hole 12; at this time, the gear 9 continues to rotate driven by the toothed plate 13, causing the second through hole 11 to be misaligned with the first through hole 10 and the third through hole 12; causing the first through hole 10, the second through hole 11, and the third through hole 12 to be briefly connected, preventing excessive introduction of lubricating oil; making the lubricity of the connection between the interior of the L-shaped limiting groove 6 and the limiting block 5 extremely good, preventing the secondary slider 4 from jamming or stopping during movement, achieving the effect of automatically replenishing lubricant, and improving the working efficiency of the device.

[0045] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. A hydraulic part ejection device for an injection mold, comprising a mold (1), and a chute (2) is provided on one side of the mold (1); a main slider (3) is slidably installed inside the chute (2); a secondary slider (4) is provided with limit sliding on the top end of one side of the main slider (3); limiting blocks (5) are fixedly connected to both the front and rear sides of the secondary slider (4); L-shaped limiting grooves (6) are provided on both the front and rear sides of the inner wall of the chute (2); the limiting blocks (5) are slidably installed inside the L-shaped limiting grooves (6); it is characterized in that: At the positions corresponding to the two L-shaped limiting grooves (6) on the upper end face of the mold (1), grooves are provided; liquid storage tanks (7) are fixedly installed inside the grooves; at the positions corresponding to the L-shaped limiting grooves (6) on the side walls of the liquid storage tanks (7), rotation grooves (8) are provided; gears (9) are hermetically and rotatably installed inside the rotation grooves (8); There is a gap between one side of the liquid storage tank (7) corresponding to the gear (9) and the groove; the side of the gear (9) facing away from the rotation groove (8) extends out of the inside of the rotation groove (8); the gear (9) is hermetically and rotatably connected to the side wall of the groove; at the inner top end of the L-shaped limiting groove (6), a first through hole (10) is provided; a second through hole (11) is provided on the gear (9); a third through hole (12) is provided inside the rotation groove (8); the third through hole (12) communicates with the inside of the liquid storage tank (7); the first through hole (10), the second through hole (11) and the third through hole (12) correspond to each other; at the positions corresponding to the gears (9) inside the mold (1), toothed plates (13) are slidably inserted; the toothed plates (13) are meshed with the gears (9); the toothed plates (13) slide through the inside of the mold (1); one end of the toothed plate (13) is fixedly connected to the main slider (3) through a connecting rod.

2. The hydraulic part ejection device of an injection mold according to claim 1, wherein: On the upper end face of the mold (1), a cavity (14) is provided; the cavity (14) communicates with the chute (2).

3. The hydraulic ejection device for an injection mold according to claim 1, characterized in that: On the top end of the main slider (3), a slope is provided on one side corresponding to the cavity (14); the secondary slider (4) is slidably installed on the slope of the main slider (3); a guiding groove (18) is provided on the slope; a guiding block (19) is fixedly connected to the bottom surface of the secondary slider (4); the guiding block (19) is slidably installed inside the guiding groove (18).

4. The hydraulic part ejection device of an injection mold according to claim 1, characterized in that: On the side wall of the mold (1) corresponding to the chute (2), a bracket is fixedly installed; a hydraulic telescopic cylinder (15) is fixedly installed on the bracket; the telescopic end of the hydraulic telescopic cylinder (15) is fixedly connected to the side wall of the main slider (3).

5. The hydraulic ejection device for an injection mold according to claim 1, wherein: On the top end of the secondary slider (4), a longitudinal shaping member (16) is fixedly installed; on one side of the main slider (3), a transverse shaping member (17) is fixedly installed.

6. The hydraulic ejection device of an injection mold according to claim 4, wherein: The output stroke of the hydraulic telescopic cylinder (15) is greater than the extension length of the transverse shaping member (17).

7. The hydraulic part ejection device of an injection mold according to claim 3, characterized in that: The height change amount of the guiding block (19) moving inside the guiding groove (18) is greater than the height of the longitudinal shaping member (16).

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