Injection molding machine convenient to demould

Abstract

The utility model relates to the technical field of injection molding machines, and discloses an injection molding machine convenient to demould, which comprises a lower mould, the surface of the top of the lower mould is fixedly connected with an injection molding device, the surface of the top of the lower mould is provided with a mould groove, the middle end in the lower mould is provided with a circular groove, and the bottom of the inner wall of the circular groove is fixedly connected with a cylinder. The outer diameter of the cylinder is in sliding connection with an ejection column, and the outer diameter of the ejection column is in sliding connection with the interior of the mold groove. According to the injection molding machine convenient to demold, a worker pulls a pull rod upwards to drive a transmission rod to slide upwards on the outer diameter of a limiting plate, and meanwhile, the transmission rod drives an ejection column to move upwards to push out a molded model in a mold groove, so that the worker can take out the molded mold after injection molding of the mold; and a worker can conveniently use the injection molding machine for injection molding next time, so that the working efficiency of the injection molding machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an injection molding machine which is convenient for demoulding. 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 eject and fill the mold cavity. However, the model will overheat after molding and it is not convenient to remove it manually.

[0003] A Chinese patent discloses an injection molding machine that is easy to clean (authorization announcement number CN215039681 U). The patented technology includes a machine body and a mold installation mechanism. The mold installation mechanism is arranged on one side of the machine body. An injection tube is arranged on the top of the machine body. A screw is arranged inside the injection tube. A heating assembly is arranged on the periphery of the injection tube. A feeding barrel is arranged on the tail side of the injection tube. The tail of the injection tube is connected to a motor. A controller is arranged on the outside of the mold installation mechanism. The injection tube includes a first injection tube shell and a second injection tube shell. The cross section of the first injection tube shell is a three-quarter ring. The cross section of the second injection tube shell is a quarter ring. The upper part of the first injection tube shell is provided with a plurality of inlay grooves. The second injection tube shell is provided with a plurality of inlay blocks near the inlay groove. The inlay groove of the first injection tube shell and the second injection tube shell are spliced ​​with the inlay groove through the inlay blocks. The invention realizes the rapid cleaning of the inside of the injection tube through the injection tube that can be quickly disassembled and assembled, targeting the above-mentioned and existing related technologies.

[0004] The inventor believes that the following defects often exist: after the injection molding machine successfully injects, when the staff manually takes the injection molded parts out of the mold, the newly molded injection molded parts are overheated and can easily cause burns to the staff. Therefore, it is necessary to wait for the molded injection parts to cool down before taking them out, which makes the injection molding interval of the injection molding machine too long, resulting in reduced production efficiency of the injection molding machine. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the prior art has the disadvantage that it is inconvenient for workers to remove the injection-molded finished product from the mold, so we propose an injection molding machine that is convenient for demoulding.

[0006] The utility model adopts the following technical scheme to solve the technical problems: an injection molding machine which is convenient for demoulding, comprising a lower mold, the surface of the top of the lower mold is fixedly connected with an injection molding device, the surface of the top of the lower mold is provided with a mold groove, the middle end of the inner part of the lower mold is provided with a circular groove, the bottom of the inner wall of the circular groove is fixedly connected with a cylinder, the outer diameter of the cylinder is slidably connected with an ejector column, the outer diameter of the ejector column is slidably connected with the inside of the mold groove, the rear end of the outer diameter of the ejector column is fixedly connected with a transmission rod, the rear end of the inner wall of the lower mold is provided with an installation groove, the bottom of the inner wall of the installation groove is fixedly connected with a limiting plate, the outer diameter of the limiting plate is slidably connected with the inside of the transmission rod, the surface of the top of the lower mold is plugged with a pull rod, and the bottom of the pull rod is fixedly connected with the surface of the top of the limiting plate.

[0007] Preferably, a slot is provided on the surface of the rear end of the limiting plate, an insert rod is inserted into the surface of the rear end of the lower mold, the front end of the insert rod is inserted into the inner wall of the slot, a flat round block is fixedly connected to the surface of the rear end of the insert rod, a first spring is fixedly connected to the surface of the front end of the flat round block, and the front end of the first spring is fixedly connected to the surface of the rear end of the lower mold.

[0008] Preferably, a return spring is fixedly connected to the surface of the bottom of the inner wall of the circular groove, the top of the return spring is fixedly connected to the surface of the bottom of the ejector column, and the inner diameter of the return spring is slidably connected to the surface of the outer diameter of the cylinder.

[0009] Preferably, a slide groove is provided on the surface of the top of the lower mold, a slide rod is fixedly connected to the inner wall of the slide groove, a slider is slidably connected to the outer diameter of the slide rod, an extension plate is fixedly connected to the surface of the top of the slider, a brush is fixedly connected to the bottom of the extension plate, and the surface of the bottom of the brush is in contact with the surface of the top of the lower mold.

[0010] Preferably, a return spring is fixedly connected to the surface of the rear end of the inner wall of the slide groove, the inner diameter of the return spring is slidingly connected to the surface of the outer diameter of the slide rod, and the front end of the return spring is fixedly connected to the surface of the rear end of the slider.

[0011] Preferably, a material leakage groove is provided on the surface of the top of the lower mold, a placement groove is provided on the surface of the front end of the lower mold, and a collection box is inserted into the inner wall of the placement groove.

[0012] Technical effects and advantages of the utility model:

[0013] In the utility model, a worker pulls the pull rod upward to drive the transmission rod to slide in the outer radial direction of the limit plate, and at the same time, the transmission rod drives the ejection column to push the molded model in the mold groove upward, so that the worker can take out the molding mold after injection molding, preventing burns caused by manual removal of the model after molding, making it convenient for workers to use the injection molding machine for injection molding next time, thereby improving the working efficiency of the injection molding machine.

[0014] In the utility model, the sliding connection between the slider and the slide rod allows the worker to push the extension plate forward so that the brush can move closely against the top of the lower mold, thereby cleaning the burr waste generated by the injection molding of the top of the lower mold, and preventing the waste remaining on the surface of the lower mold from affecting the next operation of the injection molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure section of the utility model;

[0017] Figure 3 It is an enlarged schematic diagram of the structure part A of the utility model;

[0018] Figure 4 It is an enlarged schematic diagram of the structure part B of the utility model;

[0019] Figure 5 It is a partial structural schematic diagram of the utility model.

[0020] Legend: 1. Lower mold; 2. Injection molding device; 3. Mold groove; 4. Round groove; 5. Cylinder; 6. Ejector column; 7. Transmission rod; 8. Mounting groove; 9. Limit plate; 10. Pull rod; 11. Slot; 12. Insert rod; 13. Flat round block; 14. First spring; 15. Return spring; 16. Slide groove; 17. Slide rod; 18. Sliding block; 19. Extension plate; 20. Brush; 21. Return spring; 22. Leakage groove; 23. Placement groove; 24. Collection box. DETAILED DESCRIPTION

[0021] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the utility model provides a technical solution: an injection molding machine that is easy to demould, comprising a lower mold 1, an injection molding device 2 is fixedly connected to the surface of the top of the lower mold 1, a mold groove 3 is opened on the surface of the top of the lower mold 1, a circular groove 4 is opened at the middle end of the inner wall of the lower mold 1, a cylinder 5 is fixedly connected to the bottom of the inner wall of the circular groove 4, the outer diameter of the cylinder 5 is slidably connected to an ejector column 6, the outer diameter of the ejector column 6 is slidably connected to the inside of the mold groove 3, the rear end of the outer diameter of the ejector column 6 is fixedly connected to a transmission rod 7, an installation groove 8 is opened at the rear end of the inner wall of the lower mold 1, a limiting plate 9 is fixedly connected to the bottom of the inner wall of the installation groove 8, the outer diameter of the limiting plate 9 is slidably connected to the inside of the transmission rod 7, a pull rod 10 is inserted on the surface of the top of the lower mold 1, and the bottom of the pull rod 10 is fixedly connected to the surface of the top of the limiting plate 9.

[0023] Below we will discuss in detail the specific settings and functions of the main innovation name and auxiliary innovation name.

[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in this embodiment: the staff pulls the pull rod 10 upward to drive the transmission rod 7 to slide in the outer diameter of the limit plate 9, and at the same time, the transmission rod 7 drives the ejector column 6 to push the molded model in the mold groove 3 upward, so that the staff can take out the molding mold after the mold is injection molded, to prevent the injection molded part from being manually taken out of the model after molding, causing burns, and to facilitate the workers to use the injection molding machine for injection molding next time, thereby improving the working efficiency of the injection molding machine. A slot 11 is provided on the surface of the rear end of the limit plate 9, and a plug rod 12 is inserted into the surface of the rear end of the lower mold 1. The front end of the plug rod 12 is plugged into the inner wall of the slot 11, and the surface of the rear end of the plug rod 12 is fixedly connected with a flat round block 13, and the surface of the front end of the flat round block 13 is fixedly connected with a first spring 14, and the front end of the first spring 14 is fixedly connected with the surface of the rear end of the lower mold 1. The staff pushes the flat round block 13 forward to insert the plug rod 12 forward into the inner wall of the slot 11 to adjust the position of the ejector column 6. The first spring 14 holds the flat round block 13 to prevent the insertion rod 12 from detaching from the inner wall of the slot 11, thereby preventing the staff from accidentally touching the pull rod 10 when the injection molding machine is running, driving the transmission rod 7 to move the ejector column 6 and causing the position of the ejector column 6 to shift, causing the mold for injection molding to deform. The surface of the bottom of the inner wall of the circular groove 4 is fixedly connected with a pull-back spring 15, and the top of the pull-back spring 15 is fixedly connected to the surface of the bottom of the ejector column 6, and the inner diameter of the pull-back spring 15 is slidably connected to the surface of the outer diameter of the cylinder 5. When the staff pulls the pull rod 10 upward, the pull rod 10 drives the transmission rod 7 to make the ejector column 6 pull the pull-back spring 15 upward to extend and store force. When the staff uses the ejector column 6 to push out the mold after injection molding, the pull rod 10 is released again to release the force generated by the pull-back spring 15, so that the pull-back spring 15 rebounds downward to pull the ejector column 6 into the outer diameter of the cylinder 5, and the ejector column 6 is reset, so that it is convenient for the staff to use the injection molding machine for the next injection molding.

[0025] Reference Figure 1 , Figure 2 and Figure 5As shown, in this embodiment: a slide groove 16 is provided on the surface of the top of the lower mold 1, a slide rod 17 is fixedly connected to the inner wall of the slide groove 16, a slider 18 is slidably connected to the outer diameter of the slider 17, an extension plate 19 is fixedly connected to the surface of the top of the slider 18, a brush 20 is fixedly connected to the bottom of the extension plate 19, and the surface of the bottom of the brush 20 is in contact with the surface of the top of the lower mold 1. Through the sliding connection between the slider 18 and the slide rod 17, the staff can push the extension plate 19 forward to make the brush 20 move close to the top of the lower mold 1, thereby pressing the top of the lower mold 1. The burr waste generated by the lower injection molding is cleaned to prevent the waste remaining on the surface of the lower mold 1 from affecting the next operation of the injection molding machine. The surface of the rear end of the inner wall of the slide groove 16 is fixedly connected with a return spring 21. The inner diameter of the return spring 21 is slidably connected to the surface of the outer diameter of the slide rod 17. The front end of the return spring 21 is fixedly connected to the surface of the rear end of the slider 18. When the staff pulls the extension plate 19 forward and uses the brush 20 to clean the top of the lower mold 1, the extension plate 19 moves forward and drives the slider 18 to pull the return spring 21 to store force. When the slider 18 is moved to the specified position, the extension plate 19 is loosened to release the force generated by the reset spring 21, so that the reset spring 21 rebounds backwards to pull the extension plate 19 and the brush 20 back to the specified position for reset, so that it is convenient for the staff to pull the extension plate 19 forward next time so that the brush 20 can clean the waste on the surface of the lower mold 1 out of the working area of ​​the injection molding machine, and the reset spring 21 holds the slider 18 to prevent the extension plate 19 from moving when not in use and affecting the operation of the injection molding machine. A leakage groove 22 is provided on the surface of the top of the lower mold 1. A placement groove 23 is opened on the surface, and a collection box 24 is inserted into the inner wall of the placement groove 23. When the staff pulls the extension plate 19 forward to make the brush 20 clean the waste on the surface of the lower mold 1 to the specified position, the waste falls downward into the inner wall of the collection box 24 through the leakage groove 22, so that the collection box 24 collects the waste. The staff pulls the collection box 24 forward to take the collection box 24 out of the inner wall of the placement groove 23, so that the staff can centrally collect the waste left over from the injection molding machine production for reuse, thereby reducing manufacturing costs.

[0026] The practical working principle of the present invention is that the staff pulls the pull rod 10 upward to drive the transmission rod 7 to slide in the outer diameter direction of the limit plate 9, and at the same time, the transmission rod 7 drives the ejection column 6 upward to push the molded model in the mold groove 3, so that the staff can take out the molding mold after the mold is injection molded, and prevent the mold from being manually taken out after molding, which may cause burns, and is convenient for the workers to use the injection molding machine for injection molding next time, thereby improving the working efficiency of the injection molding machine. The staff pushes the flat round block 13 forward to make the insertion rod 12 inserted forward into the inner wall of the slot 11 to fix the position of the ejection column 6, and the first spring 14 pulls the flat round block 13 to prevent the insertion rod 12 from detaching from the inner wall of the slot 11. When the injection molding machine is running, the staff is prevented from accidentally touching the pull rod 10 and driving the transmission rod 7 to move the ejector column 6, causing the position of the ejector column 6 to shift and causing the mold for injection molding to deform. When the staff pulls the pull rod 10 upward, the pull rod 10 drives the transmission rod 7 to make the ejector column 6 pull the return spring 15 upward to extend and store force. When the staff uses the ejector column 6 to push out the mold after injection molding, the pull rod 10 is released again to release the force generated by the return spring 15, so that the return spring 15 rebounds downward and pulls the ejector column 6 to insert into the outer diameter of the cylinder 5, and the ejector column 6 is reset, so that it is convenient for the staff to use the injection molding machine for the next injection molding. The sliding connection between the slider 18 and the slide rod 17 allows the staff to move forward. The extension plate 19 is pushed so that the brush 20 can move close to the top of the lower mold 1 to clean the burrs and waste materials generated by the injection molding of the top of the lower mold 1, so as to prevent the waste materials remaining on the surface of the lower mold 1 from affecting the next operation of the injection molding machine. When the staff pulls the extension plate 19 forward and uses the brush 20 to clean the top of the lower mold 1, the extension plate 19 moves forward and drives the slider 18 to pull the reset spring 21 to store force. When the staff moves the slider 18 to the specified position, the extension plate 19 is released to release the force generated by the reset spring 21, so that the reset spring 21 rebounds backwards and pulls the extension plate 19 and the brush 20 back to the specified position for reset, so as to facilitate the staff to pull the extension plate 19 forward next time. The extension plate 19 enables the brush 20 to sweep the waste on the surface of the lower mold 1 out of the working area of ​​the injection molding machine, and the reset spring 21 holds the slider 18 to prevent the extension plate 19 from being displaced when not in use and affecting the operation of the injection molding machine. When the staff pulls the extension plate 19 forward to enable the brush 20 to sweep the waste on the surface of the lower mold 1 to the specified position, the waste falls downward through the leakage groove 22 into the inner wall of the collection box 24, so that the collection box 24 collects the waste. The staff pulls the collection box 24 forward to remove the collection box 24 from the inner wall of the placement groove 23, thereby facilitating the staff to centrally collect the waste remaining from the injection molding machine production for reuse, thereby reducing manufacturing costs.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding machine for easy demoulding, comprising a lower mold (1), characterized in that: The top surface of the lower mold (1) is fixedly connected to an injection molding device (2), the top surface of the lower mold (1) is provided with a mold groove (3), the middle end of the lower mold (1) is provided with a circular groove (4), the bottom of the inner wall of the circular groove (4) is fixedly connected to a cylinder (5), the outer diameter of the cylinder (5) is slidably connected to an ejector column (6), the outer diameter of the ejector column (6) is slidably connected to the inside of the mold groove (3), the rear end of the outer diameter of the ejector column (6) is fixedly connected to a transmission rod (7), the rear end of the inner wall of the lower mold (1) is provided with an installation groove (8), the bottom of the inner wall of the installation groove (8) is fixedly connected to a limit plate (9), the outer diameter of the limit plate (9) is slidably connected to the inside of the transmission rod (7), the top surface of the lower mold (1) is plugged with a pull rod (10), and the bottom of the pull rod (10) is fixedly connected to the top surface of the transmission rod (7).

2. The injection molding machine for easy demoulding according to claim 1, characterized in that: A slot (11) is provided on the surface of the rear end of the transmission rod (7); an insertion rod (12) is inserted into the surface of the rear end of the lower mold (1); the front end of the insertion rod (12) is inserted into the inner wall of the slot (11); a flat round block (13) is fixedly connected to the surface of the rear end of the insertion rod (12); a first spring (14) is fixedly connected to the surface of the front end of the flat round block (13); and the front end of the first spring (14) is fixedly connected to the surface of the rear end of the lower mold (1).

3. The injection molding machine for easy demoulding according to claim 1, characterized in that: A pull-back spring (15) is fixedly connected to the surface of the bottom of the inner wall of the circular groove (4), the top of the pull-back spring (15) is fixedly connected to the surface of the bottom of the ejection column (6), and the inner diameter of the pull-back spring (15) is slidably connected to the surface of the outer diameter of the cylinder (5).

4. The injection molding machine for easy demoulding according to claim 1, characterized in that: The top surface of the lower mold (1) is provided with a slide groove (16), the inner wall of the slide groove (16) is fixedly connected with a slide rod (17), the outer diameter of the slide rod (17) is slidably connected with a slider (18), the top surface of the slider (18) is fixedly connected with an extension plate (19), the bottom of the extension plate (19) is fixedly connected with a brush (20), and the bottom surface of the brush (20) is in contact with the top surface of the lower mold (1).

5. The injection molding machine for easy demoulding according to claim 4, characterized in that: A return spring (21) is fixedly connected to the surface of the rear end of the inner wall of the slide groove (16), the inner diameter of the return spring (21) is slidably connected to the surface of the outer diameter of the slide rod (17), and the front end of the return spring (21) is fixedly connected to the surface of the rear end of the slide block (18).

6. The injection molding machine for easy demoulding according to claim 1, characterized in that: A material leakage groove (22) is provided on the surface of the top of the lower mold (1), a placement groove (23) is provided on the surface of the front end of the lower mold (1), and a collection box (24) is inserted into the inner wall of the placement groove (23).

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