In-mold hot cutting injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an in-mold hot cutting injection mold, which solves the problem that tailings in a feed port and an exhaust port cannot be automatically cleared out, and comprises a lower mold and an upper mold, two injection mold grooves are formed in the upper mold, the bottom surface of the upper mold is fixedly connected with an extension frame, and the bottom surface of the extension frame is fixedly connected with an upper mold. A supporting slotting block is arranged outside the extending frame, the outer surface of the extending frame is rotationally connected with a slot in the supporting slotting block through a rotating shaft, and an ejection mechanism is arranged above the supporting slotting block. According to the utility model, the two lead screws can be driven to rotate by starting the double-shaft positive and negative rotation motor, so that the two guide plates and the two ejector rods can be respectively inserted into the two injection mold grooves in the direction close to the upper mold, and therefore, tailings in the two injection mold grooves can be ejected out, and the tailings can be automatically taken out; and the time and labor for workers to take out the tailings are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an in-mold hot-cut injection mold. Background Art

[0002] After the plastic parts are injection molded, workers need to trim the gate. In order to save more effort, a cutter is ejected from the top plate to cut off the gate when the mold is opened. Both methods are shearing after the mold is opened. Since the plastic has cooled at this time, the gate surface after shearing is not beautiful, and multiple manual trimming is still required to trim the gate flat. In-mold hot cutting is to shear or squeeze the gate before the plastic mold is opened, so as to realize the mold injection automation process of part-material separation after the plastic mold is opened.

[0003] According to the Chinese patent with the announcement number CN220348954U, an in-mold hot-cut injection mold is disclosed, which includes a lower mold and an upper mold. The upper mold has an injection mold groove, and the two sides of the upper mold are provided with a feed port, an exhaust port and a cutting groove; the upper mold has a double-output shaft motor, the two ends of the double-output shaft motor have eccentric shafts, the eccentric shaft has a transmission rod, a baffle plate is provided in the cutting groove, the upper mold has a cylinder, and the cylinder has a cutting knife.

[0004] The above scheme can protect the cutter and extend the service life of the cutter. When cutting the finished product, the cut tailings will be retained inside the feed port and the exhaust port, requiring workers to manually clear out the tailings inside the feed port and the exhaust port one by one, which is time-consuming and labor-intensive, and the tailings inside the feed port and the exhaust port cannot be automatically cleared out. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an in-mold hot-cut injection mold to solve the above-mentioned problem that the tailings inside the feed port and the exhaust port cannot be automatically cleared out.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An in-mold hot-cut injection mold comprises a lower mold and an upper mold, wherein two injection mold grooves are provided inside the upper mold, an extension frame is fixedly connected to the bottom surface of the upper mold, a supporting slot block is arranged outside the extension frame, the outer surface of the extension frame is rotatably connected to the slot inside the supporting slot block through a rotating shaft, an ejection mechanism is arranged above the supporting slot block, and the ejection mechanism comprises a double-axis forward and reverse motor, the double-axis forward and reverse motor is mounted on the upper surface of the supporting slot block, and both side output ends of the double-axis forward and reverse motor are fixedly connected to screw rods, and the two The outer surfaces of the screw rods are threadedly connected with guide plates, and the sides of the two guide plates close to each other are fixedly connected with ejector rods, and the front of the ejection mechanism is provided with an anti-interference mechanism, and the upper surface of the upper mold is fixedly connected with a positioning plate, and the second electric push rods are installed inside the two positioning plates, and the output ends of the two second electric push rods are fixedly connected with mounting long blocks, and the two mounting long blocks are fixedly connected with cutting knives by bolts, and two knife grooves are provided inside the upper mold, and the outer surfaces of the two cutters are in contact with the inner walls of the two knife grooves respectively.

[0008] Preferably, the inner walls of the two guide plates are slidably connected with transverse guide rods, and the side surfaces of the two transverse guide rods close to each other are fixedly connected to the outer surface of the supporting slotted block.

[0009] Preferably, the anti-interference mechanism includes a first electric push rod and a connecting slot block, the output end of the first electric push rod is fixedly connected to a driving block, the outer surface of the driving block is in contact with the slot inside the connecting slot block, the back side of the connecting slot block is fixedly connected to the front side of the supporting slot block, and the top end of the driving block is fixedly connected to a pressing rod, and the outer surface of the pressing rod is in contact with the upper surface of the connecting slot block.

[0010] Preferably, a support block is fixedly connected to the outer surface of the first electric push rod, and the outer surface of the support block is fixedly connected to the extension frame.

[0011] Preferably, two first springs are fixedly connected to the upper surface of the support block, and the top ends of the two first springs are fixedly connected to the bottom surface of the connecting slot block.

[0012] Preferably, two blocking slides are provided inside the upper mold, and the outer surfaces of the two blocking slides are slidably connected to the grooves inside the upper mold. The outer surfaces of the two blocking slides are fixedly connected to second springs, and the ends of the two second springs away from the blocking slides are fixedly connected to the grooves inside the upper mold.

[0013] Preferably, a male mold is fixedly connected to the upper surface of the lower mold, and four vertical guide rods are fixedly connected to the upper surface of the lower mold, and outer surfaces of the four vertical guide rods are slidably connected to the grooves inside the upper mold.

[0014] The beneficial effects of the utility model are:

[0015] 1. By starting the dual-axis forward and reverse motor, the two screws can be driven to rotate, so that the two guide plates and the two ejector rods can be inserted into the two injection mold grooves in the direction close to the upper mold, so that the tailings in the two injection mold grooves can be ejected, and the tailings can be automatically removed, saving the workers' time and effort in removing the tailings.

[0016] 2. By starting the first electric push rod, the driving block and the pressure rod can be driven to move downward. The pressure rod can slide on the upper surface of the connecting groove block and pull down the connecting groove block. The connecting groove block can drive the supporting slot block and the ejection mechanism to rotate, thereby avoiding the influence of the guide plate and the ejection rod on the early injection molding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A in the enlarged view;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the extension frame, the supporting slotted block and the ejection mechanism of the utility model;

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the anti-interference mechanism of the utility model.

[0022] In the figure: 1. lower mold; 2. upper mold; 3. injection mold groove; 4. extension frame; 5. support slot block; 6. ejector mechanism; 601. double-axis forward and reverse motor; 602. screw; 603. guide plate; 604. ejector rod; 605. transverse guide rod; 7. anti-interference mechanism; 701. first electric push rod; 702. driving block; 703. pressure rod; 704. connecting slot block; 705. support block; 706. first spring; 8. positioning plate; 9. second electric push rod; 10. installation long block; 11. cutting knife; 12. knife groove; 13. blocking slider; 14. second spring; 15. punch; 16. vertical guide rod. DETAILED DESCRIPTION

[0023] The following will describe various embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0024] An in-mold hot-cut injection mold, as shown in the attached Figure 1-5 As shown, it includes a lower mold 1 and an upper mold 2. Two injection mold grooves 3 are opened inside the upper mold 2. The injection mold groove 3 on one side is a feed port, and the injection mold groove 3 on the other side is an exhaust port.

[0025] An extension frame 4 is fixedly connected to the bottom surface of the upper mold 2, and a supporting slot block 5 is arranged outside the extension frame 4. The outer surface of the extension frame 4 is rotatably connected to the slot inside the supporting slot block 5 through a rotating shaft. The extension frame 4 is U-shaped, and the inner wall of the extension frame 4 is provided with a rotating shaft that penetrates the extension frame 4 itself and is connected to the supporting slot block 5.

[0026] An ejection mechanism 6 is arranged above the supporting slot block 5, and the ejection mechanism 6 includes a double-axis forward and reverse motor 601, and the double-axis forward and reverse motor 601 is installed on the upper surface of the supporting slot block 5, and the output ends on both sides of the double-axis forward and reverse motor 601 are fixedly connected with screw rods 602, and the outer surfaces of the two screw rods 602 are threadedly connected with guide plates 603, and the side surfaces of the two guide plates 603 close to each other are fixedly connected with ejector rods 604. In a natural state, the two ejector rods 604 should be aligned with the two injection mold grooves 3, and the size of the two ejector rods 604 is smaller than the diameter of the injection mold groove 3.

[0027] The inner walls of the two guide plates 603 are slidably connected with transverse guide rods 605, and the side surfaces of the two transverse guide rods 605 that are close to each other are fixedly connected to the outer surface of the supporting slotted block 5. By using two transverse guide rods 605, the sliding of the guide plates 603 can be guided.

[0028] The front of the ejection mechanism 6 is provided with an anti-interference mechanism 7, which includes a first electric push rod 701 and a connecting slot block 704. The output end of the first electric push rod 701 is fixedly connected with a driving block 702, the outer surface of the driving block 702 is in contact with the slot inside the connecting slot block 704, the back of the connecting slot block 704 is fixedly connected with the front of the supporting slot block 5, and the top of the driving block 702 is fixedly connected with a pressing rod 703, the outer surface of the pressing rod 703 is in contact with the upper surface of the connecting slot block 704. The outer surface of the pressing rod 703 should be set relatively smooth, so that the pressing rod 703 can easily press down the connecting slot block 704, and the connecting slot block 704 can drive the supporting slot block 5 and the ejection mechanism 6 to rotate as a whole, thereby avoiding interference with the two injection mold grooves 3.

[0029] A support block 705 is fixedly connected to the outer surface of the first electric push rod 701 . The outer surface of the support block 705 is fixedly connected to the extension frame 4 . The support block 705 can support and position the first electric push rod 701 .

[0030] Two first springs 706 are fixedly connected to the upper surface of the support block 705, and the top ends of the two first springs 706 are fixedly connected to the bottom surface of the connecting groove block 704. By using the elastic force of the two first springs 706, the connecting groove block 704 can be driven to reset when the tail material inside the injection mold groove 3 needs to be ejected.

[0031] A positioning plate 8 is fixedly connected to the upper surface of the upper mold 2, and a second electric push rod 9 is installed inside the two positioning plates 8. The output ends of the two second electric push rods 9 are fixedly connected to a mounting long block 10. The two mounting long blocks 10 are fixedly connected to a cutter 11 by bolts. The threaded connection between the mounting long block 10 and the cutter 11 can facilitate the replacement of the worn cutter 11.

[0032] Two knife grooves 12 are formed inside the upper mold 2. The outer surfaces of the two cutters 11 are in contact with the inner walls of the two knife grooves 12 respectively. The cutters 11 are arranged to fit the inner walls of the knife grooves 12 so that the cutters 11 can cut the finished product more neatly.

[0033] Two blocking sliders 13 are arranged inside the upper mold 2, and a groove which is laterally matched with the blocking slider 13 is arranged inside the upper mold 2. The outer surfaces of the two blocking sliders 13 are slidably connected to the groove inside the upper mold 2, and the outer surfaces of the two blocking sliders 13 are fixedly connected with second springs 14, and the ends of the two second springs 14 away from the blocking sliders 13 are fixedly connected to the groove inside the upper mold 2. By using the second springs 14, the blocking slider 13 can be abutted against the outer surface of the cutter 11, and the blocking slider 13 can prevent the raw material from entering the interior of the knife groove 12, thereby avoiding affecting the durability of the cutter 11.

[0034] A punch 15 is fixedly connected to the upper surface of the lower mold 1, and four vertical guide rods 16 are fixedly connected to the upper surface of the lower mold 1. Four slots adapted to the vertical guide rods 16 are arranged inside the upper mold 2. The outer surfaces of the four vertical guide rods 16 are slidably connected to the slots inside the upper mold 2. The four vertical guide rods 16 can guide the lifting and lowering of the upper mold 2.

[0035] Working principle: When the finished product is injection molded, by synchronously starting the two second electric push rods 9, the two installation long blocks 10 and the cutter 11 can be driven to move downward, so that the tail material and the finished product can be cut off, so as to avoid the unsightly cut after the finished product is cooled. After the finished product in the mold is taken out, by starting the first electric push rod 701, the driving block 702 and the pressure rod 703 can be driven to move upward, and under the elastic force of the two first springs 706, the connecting groove block 704 and the supporting slot block 5 can be driven to rotate, so that the two ejector rods 604 can be driven to align with the two injection mold grooves 3. By starting the double-axis forward and reverse motor 601, the two screw rods 602 can be driven to rotate, so that the two guide plates 603 and the ejector rod 604 can be driven to move in a direction close to each other, so that the tail material remaining in the injection mold groove 3 can be ejected, thereby realizing the automatic ejection of the tail material, and then saving the time and effort of the workers when taking out the tail material.

[0036] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In addition, it should be noted that in the description of the present invention, 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An in-mold hot-cut injection mold, comprising a lower mold (1) and an upper mold (2), characterized in that: Two injection mold grooves (3) are provided inside the upper mold (2); an extension frame (4) is fixedly connected to the bottom surface of the upper mold (2); a supporting slot block (5) is provided outside the extension frame (4); the outer surface of the extension frame (4) is rotatably connected to the slot inside the supporting slot block (5) via a rotating shaft; an ejection mechanism (6) is provided above the supporting slot block (5); the ejection mechanism (6) comprises a double-axis forward and reverse motor (601); the double-axis forward and reverse motor (601) is mounted on the upper surface of the supporting slot block (5); both side output ends of the double-axis forward and reverse motor (601) are fixedly connected to screw rods (602); the outer surfaces of the two screw rods (602) are threadedly connected to the screw rods (602); A guide plate (603) is connected, and the side surfaces of the two guide plates (603) close to each other are fixedly connected to an ejector rod (604), and an anti-interference mechanism (7) is arranged on the front of the ejector mechanism (6). A positioning plate (8) is fixedly connected to the upper surface of the upper mold (2), and a second electric push rod (9) is installed inside the two positioning plates (8). The output ends of the two second electric push rods (9) are fixedly connected to a mounting long block (10), and the two mounting long blocks (10) are fixedly connected to a cutter (11) by bolts. Two knife grooves (12) are provided inside the upper mold (2), and the outer surfaces of the two cutters (11) are in contact with the inner walls of the two knife grooves (12) respectively.

2. The in-mold hot-cut injection mold according to claim 1, characterized in that: The inner walls of the two guide plates (603) are slidably connected to a transverse guide rod (605), and the side surfaces of the two transverse guide rods (605) that are close to each other are fixedly connected to the outer surface of the supporting slotted block (5).

3. The in-mold hot-cut injection mold according to claim 1, characterized in that: The anti-interference mechanism (7) comprises a first electric push rod (701) and a connecting slot block (704); the output end of the first electric push rod (701) is fixedly connected to a driving block (702); the outer surface of the driving block (702) contacts the slot inside the connecting slot block (704); the back surface of the connecting slot block (704) is fixedly connected to the front surface of the supporting slot block (5); the top end of the driving block (702) is fixedly connected to a pressing rod (703); the outer surface of the pressing rod (703) contacts the upper surface of the connecting slot block (704).

4. The in-mold hot-cut injection mold according to claim 3, characterized in that: The outer surface of the first electric push rod (701) is fixedly connected to a support block (705), and the outer surface of the support block (705) is fixedly connected to the extension frame (4).

5. The in-mold hot-cut injection mold according to claim 4, characterized in that: Two first springs (706) are fixedly connected to the upper surface of the support block (705), and the top ends of the two first springs (706) are fixedly connected to the bottom surface of the connecting slot block (704).

6. The in-mold hot-cut injection mold according to claim 1, characterized in that: Two blocking slide blocks (13) are arranged inside the upper mold (2); the outer surfaces of the two blocking slide blocks (13) are slidably connected to the slots inside the upper mold (2); the outer surfaces of the two blocking slide blocks (13) are fixedly connected to second springs (14); and the ends of the two second springs (14) away from the blocking slide blocks (13) are fixedly connected to the slots inside the upper mold (2).

7. The in-mold hot-cut injection mold according to claim 1, characterized in that: The upper surface of the lower mold (1) is fixedly connected to a punch (15), and the upper surface of the lower mold (1) is fixedly connected to four vertical guide rods (16), and the outer surfaces of the four vertical guide rods (16) are slidably connected to the slots inside the upper mold (2).

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