Shell injection molding machine capable of reducing bubbles

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a shell injection molding machine capable of reducing bubbles. The mold comprises an upper mold body and a lower mold body, two exhaust grooves are formed in the surface of the lower mold body, a U-shaped frame is fixedly connected to the surface of the lower mold body, two sliding plates are slidably connected to the inner surface of the U-shaped frame, baffles are fixedly connected to the sides, close to each other, of the two sliding plates, and a short rod is fixedly connected to the surface of the U-shaped frame. And one end of the short rod is fixedly connected with an elliptical plate, a screw rod is inserted into the elliptical plate in a threaded mode, and one end of the screw rod is rotationally connected with a limiting block. The problems that when a worker injects materials into a lower mold from a charging barrel, air is contained between the materials and plastic particles in the charging barrel, when plastic enters the charging barrel from a hopper during plasticization, the air enters an inner cavity together, the mechanical strength of a shell or the weight of a product is weakened due to bubbles, and the product quality does not reach the standard are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a shell injection molding machine capable of reducing bubbles. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity. However, different molds will be used for different injection molded products. Attention should be paid to reducing the entry of bubbles into the mold during the injection molding process.

[0003] A Chinese patent application CN202320005064.5 discloses a cooling structure for an injection molding machine. The key points of its technical solution are: when the movable mold and the fixed mold are closed, the penetration rod is inserted into the sleeve rod, and the small rod is inserted into the sleeve rod to squeeze the block in the sleeve rod, and a gap is generated between the block in the sleeve rod and the retaining ring, and the block in the penetration rod is also squeezed, so that a gap is generated between the block in the penetration rod and the retaining ring, which facilitates the flow of water from the sleeve rod or the penetration rod, so that there is water in the bottom end of the fixed mold and the water tank of the movable mold, which is convenient for cooling the raw materials. When the movable mold and the fixed mold are separated, under the action of the limiting structure, the block blocks the retaining ring, so that the water in the water tank cannot flow out.

[0004] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when the staff injects the material from the barrel into the lower mold, because the material is in the barrel, there is air between the plastic particles. When the plastic enters the barrel from the hopper during plasticization, the air is brought into the inner cavity, resulting in bubbles and weakening the mechanical strength of the shell or the weight of the product, causing the product quality to fail to meet the standards; therefore, in view of the above problems, a shell injection molding machine that can reduce bubbles is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that there is air between the plastic particles. When the plastic is plasticized, it enters the barrel from the hopper and the air is brought into the inner cavity, resulting in bubbles and weakening the mechanical strength of the shell or the weight of the product, resulting in substandard product quality. The utility model proposes a shell injection molding machine that can reduce bubbles.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a shell injection molding machine that can reduce bubbles, comprising an upper mold and a lower mold, the surface of the lower mold is provided with two exhaust grooves, the surface of the lower mold is fixedly connected with a U-shaped frame, the inner surface of the U-shaped frame is slidably connected with two slides, the side of the two slides close to each other is fixedly connected with a baffle, the surface of the U-shaped frame is fixedly connected with a short rod, one end of the short rod is fixedly connected with an elliptical plate, the inner thread of the elliptical plate is inserted with a screw, one end of the screw is rotatably connected to a limiting block, and the surface of the baffle is provided with a limiting groove.

[0007] The effect achieved by the above components is: the air in the lower mold is discharged as much as possible, which avoids the situation when the staff injects the material from the barrel into the lower mold. Because the material is in the barrel, there is air between the plastic particles. When the plastic enters the barrel from the hopper during plasticization, the air is brought into the inner cavity together, resulting in bubbles and weakening the mechanical strength of the shell or the weight of the product, causing the product quality to fail to meet the standards, thereby improving the practicality of the device.

[0008] Preferably, a limiting rod is slidably inserted in the elliptical plate, and one end of the limiting rod is fixedly connected to the limiting block.

[0009] The effect achieved by the above components is that the limit block drives the limit rod to slide in the elliptical plate, so that the limit block moves up and down more stably.

[0010] Preferably, one end of the screw rod away from the limiting block is fixedly connected with a handle, and the size of the limiting block is matched with the size of the limiting groove of the baffle.

[0011] The effect achieved by the above components is: to facilitate the staff to accurately control the position of the limit block.

[0012] Preferably, a connecting rod is fixedly connected to the surface of the U-shaped frame, a movable plate is slidably connected to the arc surface of the connecting rod, a plug rod is fixedly connected to one side of the movable plate, and a fixing groove is provided on the surface of the baffle.

[0013] The effect achieved by the above-mentioned components is: achieving the effect of limiting the position of the baffle, thereby preventing the baffle from sliding and blocking the exhaust slot during the injection molding process of the shell.

[0014] Preferably, the arc surface of the connecting rod is sleeved with a spring, and two ends of the spring are respectively fixedly connected to the moving plate and the U-shaped frame.

[0015] The effects achieved by the above components are: the elastic force of the spring drives the moving plate to slide on the arc surface of the connecting rod, and the moving plate drives the insertion rod to automatically insert into the baffle fixing groove, thereby improving the stability of the device.

[0016] Preferably, one end of the connecting rod away from the U-shaped frame is fixedly connected to a mounting block, and the size of the plug rod is adapted to the size of the baffle fixing groove.

[0017] The effect achieved by the above components is: preventing the moving plate from falling off during the movement of the arc surface of the connecting rod.

[0018] Preferably, a sealing gasket is fixedly connected to the surface of the baffle, and the sealing gasket is made of rubber.

[0019] The effects achieved by the above components are: the rubber sealing pad has good sealing performance and can effectively prevent external gas, liquid or solid from entering the inner surface of the exhaust groove.

[0020] In summary, the beneficial effects of the utility model are:

[0021] In the utility model, the effect of exhausting the air in the lower mold is achieved as much as possible, and the staff is prevented from injecting the material from the barrel into the lower mold. Because the material contains air between the plastic particles in the barrel, when the plastic enters the barrel from the hopper during plasticization, the air is brought into the inner cavity together, resulting in bubbles and weakening the mechanical strength of the shell or the weight of the product, resulting in substandard product quality, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the baffle in the utility model;

[0024] Figure 3 For the utility model Figure 2 A magnified image of point A;

[0025] Figure 4 For the utility model Figure 2 Enlarged view of point B.

[0026] Legend: 1. Lower die; 2. Upper die; 3. Exhaust groove; 4. U-shaped frame; 5. Slide plate; 6. Baffle; 7. Short rod; 8. Oval plate; 9. Screw; 10. Limit block; 11. Limit rod; 12. Handle; 13. Connecting rod; 14. Moving plate; 15. Insert rod; 16. Spring; 17. Mounting block; 18. Sealing gasket. DETAILED DESCRIPTION

[0027] Reference Figure 1-4As shown, the utility model provides a technical solution: a shell injection molding machine capable of reducing bubbles, comprising an upper mold 2 and a lower mold 1, wherein two exhaust grooves 3 are provided on the surface of the lower mold 1, a U-shaped frame 4 is fixedly connected to the surface of the lower mold 1, two slide plates 5 are slidably connected to the inner surface of the U-shaped frame 4, a baffle 6 is fixedly connected to the side where the two slide plates 5 are close to each other, a short rod 7 is fixedly connected to the surface of the U-shaped frame 4, one end of the short rod 7 is fixedly connected to an elliptical plate 8, a screw 9 is inserted into the inner thread of the elliptical plate 8, one end of the screw 9 is rotatably connected to a limiting block 10, a limiting groove is provided on the surface of the baffle 6, a limiting rod 11 is slidably inserted into the elliptical plate 8, and one end of the limiting rod 11 is fixedly connected to the limiting block 10. The limiting block 10 drives the limiting rod 11 to slide in the elliptical plate 8, so that the limiting block 10 moves up and down more stably, and a handle 12 is fixedly connected to the end of the screw 9 away from the limiting block 10, and the size of the limiting block 10 is adapted to the size of the limiting groove of the baffle 6. The handle 12 is turned to drive the screw 9 to rotate in the elliptical plate 8, and the screw 9 drives the limit block 10 to move, so that the staff can accurately control the position of the limit block 10. The surface of the U-shaped frame 4 is fixedly connected with a connecting rod 13, and the arc surface of the connecting rod 13 is slidably connected with a moving plate 14. One side of the moving plate 14 is fixedly connected with an insertion rod 15, and a fixed groove is provided on the surface of the baffle 6. Pulling the baffle 6 drives the slide plate 5 to slide on the inner surface of the U-shaped frame 4, and pushing the moving plate 14 drives the insertion rod 15 to move and insert into the fixed groove of the baffle 6, so as to achieve the effect of limiting the position of the baffle 6, and avoid the situation that the baffle 6 slides and blocks the exhaust groove 3 during the injection molding process of the shell. The arc surface of the connecting rod 13 is covered with a spring 16, and the two ends of the spring 16 are respectively fixedly connected to the moving plate 14 and the U-shaped frame 4. Pull the baffle 6 and squeeze the plug 15. The elastic force of the spring 16 drives the movable plate 14 to slide on the arc surface of the connecting rod 13. The movable plate 14 drives the plug 15 to automatically insert into the fixed groove of the baffle 6, which improves the stability of the device. The end of the connecting rod 13 away from the U-shaped frame 4 is fixedly connected with a mounting block 17. The size of the plug 15 is adapted to the size of the fixed groove of the baffle 6. Pull the movable plate 14 to slide on the arc surface of the connecting rod 13 until the movable plate 14 contacts the mounting block 17, which avoids the movable plate 14 from falling off during the movement of the arc surface of the connecting rod 13. The surface of the baffle 6 is fixedly connected with a sealing gasket 18, and the material of the sealing gasket 18 is rubber. The rubber sealing gasket 18 has good sealing performance and can effectively prevent external gas, liquid or solid from entering the inner surface of the exhaust groove 3.

[0028] Working principle: when the staff needs to open the baffle 6, the handle 12 is turned to drive the screw 9 to rotate in the elliptical plate 8, the screw 9 drives the limit block 10 to move, and the limit block 10 drives the limit rod 11 to slide in the elliptical plate 8, so that the limit block 10 moves up and down more stably until the limit block 10 is out of the limit groove of the baffle 6. When the position of the baffle 6 needs to be limited, the baffle 6 is pulled to drive the slide plate 5 to slide on the inner surface of the U-shaped frame 4, and the moving plate 14 is pushed to drive the insertion rod 15 to move and insert into the fixed groove of the baffle 6, so as to achieve the baffle 6. The position of the plate 6 is limited to prevent the baffle 6 from sliding and blocking the exhaust groove 3 during the injection molding of the shell, and the air in the lower mold 1 is discharged as much as possible, which prevents the staff from injecting the material from the barrel into the lower mold 1. Because the material is in the barrel, there is air between the plastic particles. When the plastic enters the barrel from the hopper during plasticization, the air is brought into the inner cavity, resulting in bubbles and weakening the mechanical strength of the shell or the weight of the product, resulting in substandard product quality, thereby improving the practicability of the device.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A housing injection molding machine capable of reducing bubbles, comprising an upper mold (2) and a lower mold (1), characterized in that: The surface of the lower mold (1) is provided with two exhaust grooves (3); the surface of the lower mold (1) is fixedly connected to a U-shaped frame (4); the inner surface of the U-shaped frame (4) is slidably connected to two slide plates (5); a baffle plate (6) is fixedly connected to the side of the two slide plates (5) close to each other; a short rod (7) is fixedly connected to the surface of the U-shaped frame (4); one end of the short rod (7) is fixedly connected to an elliptical plate (8); a screw rod (9) is inserted into the internal thread of the elliptical plate (8); one end of the screw rod (9) is rotatably connected to a limiting block (10); and a limiting groove is provided on the surface of the baffle plate (6).

2. A shell injection molding machine capable of reducing bubbles according to claim 1, characterized in that: A limiting rod (11) is slidably inserted in the elliptical plate (8), and one end of the limiting rod (11) is fixedly connected to the limiting block (10).

3. The shell injection molding machine capable of reducing bubbles according to claim 1, characterized in that: One end of the screw rod (9) away from the limiting block (10) is fixedly connected to a handle (12), and the size of the limiting block (10) is adapted to the size of the limiting groove of the baffle plate (6).

4. The shell injection molding machine capable of reducing bubbles according to claim 1, characterized in that: A connecting rod (13) is fixedly connected to the surface of the U-shaped frame (4), a movable plate (14) is slidably connected to the arc surface of the connecting rod (13), an insertion rod (15) is fixedly connected to one side of the movable plate (14), and a fixing groove is provided on the surface of the baffle (6).

5. The shell injection molding machine capable of reducing bubbles according to claim 4, characterized in that: The arc surface of the connecting rod (13) is sleeved with a spring (16), and the two ends of the spring (16) are respectively fixedly connected to the moving plate (14) and the U-shaped frame (4).

6. The shell injection molding machine capable of reducing bubbles according to claim 4, characterized in that: One end of the connecting rod (13) away from the U-shaped frame (4) is fixedly connected to a mounting block (17), and the size of the insertion rod (15) is compatible with the size of the fixing groove of the baffle (6).

7. The shell injection molding machine capable of reducing bubbles according to claim 1, characterized in that: A sealing gasket (18) is fixedly connected to the surface of the baffle (6), and the sealing gasket (18) is made of rubber.

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