Intra-mold hot cutting mechanism of injection mold

Abstract

The utility model discloses an in-mold hot cutting mechanism of an injection mold, which is characterized by comprising a cutter insert, an oil cylinder, a cutter, a cutter mounting piece and a mounting block which are mounted on the mold, and the cutter insert and the mounting block are fixedly mounted on the mold; the bottom of the cutter is connected with the cutter mounting piece, the middle of the cutter is movably inserted into the mold, and the top of the cutter is movably inserted into the cutter insert; the cutter mounting piece is movably arranged right above the mounting block; a plurality of springs are arranged on the cutter mounting part, the tops of the springs abut against the mold, the springs push the cutter mounting part and the cutter to move downwards, and the bottom of the cutter mounting part is arranged close to the top face of the mounting block; the oil cylinder is fixedly installed on the bottom face of the installation block and pushes the cutter installation piece and the cutter to move upwards through a transmission rod. According to the utility model, the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model relates to a mold, in particular to an injection mold in-mold hot cutting mechanism. Background Art

[0002] As the consumer market's demand for product quality continues to upgrade, it is not only about meeting functional requirements, but also about appearance. Plastic gate cutting is one of the most important items. Many plastic gates need to be trimmed manually or even machined to make them smooth, which will take up a lot of manpower and processing costs. In-mold hot-cut gate technology is an advanced injection molding processing technology that has long been popularized in Europe and the United States. In fact, the in-mold cutting mechanism mainly uses a cylinder or an oil cylinder to drive the cutter to move, and directly uses the output shaft of the oil cylinder to connect with the cutter through a transmission rod, and drives the cutter to move through the extension and retraction of the oil cylinder output shaft. In this structure, there are the following shortcomings: when the oil cylinder is driven, the precision control is not very good, and it is easy to cause the cutter and the mold runner to be damaged due to excessive contact force. When the cutter retracts, the cutter moves back too much, resulting in more injection plastic. Since the injection molding machine has a fixed amount of single injection, it is easy to have defective and unqualified products. Therefore, in many cases, the gate is repaired directly by equipment or manually instead of in-mold cutting, which results in high costs and high labor intensity for operators. Summary of the invention

[0003] The utility model aims to provide an injection mold in-mold hot cutting mechanism. By using the structure, the labor intensity of the staff can be reduced, the production efficiency can be improved, and the qualified rate of the products can be guaranteed.

[0004] To achieve the above object, the technical solution adopted by the utility model is: an injection mold in-mold hot cutting mechanism, comprising a cutter insert, a cylinder, a cutter, a cutter mounting member and a mounting block installed on the mold, wherein the cutter insert and the mounting block are fixedly installed on the mold;

[0005] The bottom of the cutter is connected to the cutter mounting member, the middle of the cutter is movably inserted in the mold, and the top of the cutter is movably inserted in the cutter insert;

[0006] The cutter mounting member is movably arranged just above the mounting block;

[0007] The cutter mounting member is provided with a plurality of springs, the tops of the springs are against the mold, the springs push the cutter mounting member and the cutter to move downward, and the bottom of the cutter mounting member is arranged close to the top surface of the mounting block;

[0008] The oil cylinder is fixedly mounted on the bottom surface of the mounting block, and the oil cylinder pushes the cutter mounting member and the cutter to move upwards via a transmission rod.

[0009] In the above technical solution, the mounting block is provided with guide holes with two ends passing through, the transmission rod is movably arranged in the guide holes, and the output shaft at the top of the oil cylinder is connected to the bottom of the transmission rod;

[0010] When the oil cylinder output shaft extends, it drives the top of the transmission rod to extend out of the guide hole, and pushes the cutter mounting member to move upward through the transmission rod;

[0011] When the oil cylinder output shaft retracts, it drives the top of the transmission rod to move downward away from the bottom surface of the cutter mounting member, and the spring pushes the cutter mounting member and the cutter to move downward.

[0012] In the above technical solution, the mold is provided with an upper groove, a middle groove and a lower groove which are interconnected, and the middle groove connects the upper groove with the lower groove;

[0013] The width of the upper groove is smaller than the width of the middle groove, and the width of the lower groove is larger than the width of the middle groove;

[0014] A mounting groove connected to the upper groove is provided on the mold beside the upper groove, the cutter insert is installed in the mounting groove, the mounting block is arranged directly below the lower groove, the cutter mounting piece is movably arranged in the lower groove, and the top of the cutter passes through the middle groove and is inserted in the upper groove.

[0015] In the above technical solution, the cutter mounting member includes a cutter panel and a cutter bottom plate, the bottom of the cutter panel is mounted on the top surface of the cutter bottom plate, and the cutter panel is provided with a cutter mounting groove with two ends passing through.

[0016] The bottom of the cutter base plate is provided with a bolt mounting hole connected to the cutter mounting groove, the bottom of the cutter is inserted in the cutter mounting groove, and the bottom of the cutter is against the top surface of the cutter base plate, a connecting bolt is inserted in the bolt mounting hole, and the top of the connecting bolt is screwed to the bottom of the cutter.

[0017] In the above technical solution, the cutter installation groove includes an upper cutter installation groove and a lower cutter installation groove which are interconnected, the bottom of the cutter passes through the upper cutter installation groove and is inserted into the lower cutter installation groove, and the outer wall of the cutter fits with the inner wall of the upper cutter installation groove;

[0018] An extension block is arranged on the outer side of the bottom of the cutter, the top surface of the extension block abuts against the top surface of the cutter installation lower groove, and the bottom surface of the extension block abuts against the top surface of the cutter bottom plate.

[0019] In the above technical solution, a connecting screw hole is provided at the bottom of the cutter, and the top of the connecting bolt passes through the bolt mounting hole and is screwed to the connecting screw hole;

[0020] The screw head at the bottom of the connecting bolt is arranged in the bolt mounting hole.

[0021] In the above technical solution, a plurality of spring mounting holes are provided on the top surface of the cutter panel, and the plurality of spring mounting holes are arranged in an array on the cutter panel outside the cutter, and the bottom of each spring is installed in one of the spring mounting holes;

[0022] And / or, a plurality of guide rods extending downward are provided on the top surface of the lower groove, each of the guide rods is arranged opposite to one of the spring mounting holes, and the upper part of each of the springs is sleeved on the outside of one of the guide rods;

[0023] When the oil cylinder output is extended, the top of the cutter mounting piece is arranged close to the top surface of the lower groove, and the bottom of the guide rod is inserted into the spring mounting hole.

[0024] In the above technical solution, a notch is provided on the side wall of the cutter bottom plate, the two ends of the notch are connected to the top surface and the bottom surface of the cutter bottom plate, and the notch is arranged directly below the cutter panel;

[0025] A clearance groove communicating with the lower groove is provided on the mold at the side of the lower groove, an adjusting bolt is screwed on the top of the clearance groove, an adjusting ring is sleeved on the adjusting bolt, and one side of the adjusting ring is arranged in the notch;

[0026] When the spring is in an extended state, the bottom surface of the cutter panel is close to or against the top surface of the adjusting ring.

[0027] In the above technical solution, an adjusting screw hole is provided on the top surface of the give way groove, the top of the adjusting bolt is threadedly connected to the adjusting screw hole, the adjusting ring is sleeved on the outside of the adjusting bolt, the top of the adjusting ring is arranged close to the top surface of the give way groove, and the bottom of the adjusting ring is against the screw head of the adjusting bolt.

[0028] In the above technical solution, a material channel is provided on the top of the cutter insert, and when the cutter moves upward, the top of the cutter passes through the material channel and is arranged above the material channel;

[0029] When the cutter moves downward, the top of the cutter is flush with the bottom of the material channel.

[0030] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0031] 1. In the utility model, the cutter mounting part is used to mount and fix the bottom of the cutter, the oil cylinder pushes the cutter mounting part and the cutter up through the transmission rod, and the spring is used to push the cutter mounting part and the cutter down. The oil cylinder does not need to be directly connected to the cutter, which improves the stability during use and ensures the product qualification rate. At the same time, the gate is cut off in the mold, which can reduce the material consumption, reduce the cost, and reduce the labor intensity of the operator;

[0032] 2. In the utility model, the bottom of the cutter is limited by the cutter panel and the cutter bottom plate, so that the cutter can be quickly installed and disassembled;

[0033] 3. In the utility model, the position of the adjusting ring can be adjusted by setting the adjusting ring and the adjusting bolt. In this way, even if the cutter is out of mode, there is no need to replace the cutter, and the position of the cutter can be quickly adjusted and limited, thereby reducing the cost of maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present utility model;

[0035] Figure 2 It is a schematic diagram of the structure of the first embodiment of the utility model (the mold is not shown).

[0036] Among them: 1. mold; 2. cutter insert; 3. cylinder; 4. cutter; 5. cutter mounting piece; 6. mounting block; 7. spring; 8. transmission rod; 9. guide hole; 10. upper groove; 11. middle groove; 12. lower groove; 13. mounting groove; 14. material channel; 15. cutter panel; 16. cutter bottom plate; 17. bolt mounting hole; 18. connecting bolt; 19. cutter mounting upper groove; 20. cutter mounting lower groove; 21. extension block; 22. spring mounting hole; 23. guide rod; 24. notch; 25. clearance groove; 26. adjusting bolt; 27. adjusting ring. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0038] Example 1: See Figure 1 , 2 As shown, an injection mold in-mold hot cutting mechanism comprises a cutter insert 2, a cylinder 3, a cutter 4, a cutter mounting member 5 and a mounting block 6 mounted on a mold 1, wherein the cutter insert 2 and the mounting block 6 are fixedly mounted on the mold 1;

[0039] The bottom of the cutter 4 is connected to the cutter mounting member 5, the middle of the cutter 4 is movably inserted in the mold 1, and the top of the cutter 4 is movably inserted in the cutter insert 2;

[0040] The cutter mounting member 5 is movably arranged just above the mounting block 6;

[0041] The cutter mounting member 5 is provided with a plurality of springs 7, the top of the springs 7 being against the mold 1, the springs 7 pushing the cutter mounting member 5 and the cutter 4 to move downward, and making the bottom of the cutter mounting member 5 close to the top surface of the mounting block 6;

[0042] The oil cylinder 3 is fixedly mounted on the bottom surface of the mounting block 6 , and the oil cylinder 3 pushes the cutter mounting member 5 and the cutter 4 to move upwards via the transmission rod 8 .

[0043] In this embodiment, the mold includes a male mold and a female mold (in this embodiment, the female mold is located above the male mold as an example, and can also be arranged horizontally or at other angles. Therefore, the front, rear, upper, lower, left, and right positions in the utility model are the positions in the attached drawings), the mold hot cutting mechanism is installed on the male mold, and the injection gate of the injection molding machine is located above the female mold. After the male mold and the female mold are molded together and before the plastic is injected, the cutter is lowered in advance, and the injection molding machine injects the plastic into the mold cavity of the male mold and the female mold. After the injection and pressure holding are completed, the cooling stage is not directly entered. The output shaft of the oil cylinder extends out, and through the ejection of the transmission rod, the cutter mounting part and the cutter are pushed upward, and the spring is compressed. In the process of the cutter moving upward, the gate of the injection molded product is thermally cut off. After the cutting is completed, the output shaft of the oil cylinder drives the transmission rod to retract to the original position. In this process, the restoring force of the spring pushes the cutter mounting part and the cutter to move down to the original position, and then cyclic cooling is performed. After the cooling is completed, the mold is opened and the separated product and gate are ejected. In this way, after the product is injected, there is no need to manually clean the gate, which reduces the labor intensity of the staff and improves production efficiency. At the same time, it can also reduce the waste of plastic and reduce costs.

[0044] See also Figure 1 As shown, the mounting block 6 is provided with a guide hole 9 with two ends passing through, the transmission rod 8 is movably arranged in the guide hole 9, and the output shaft at the top of the oil cylinder 3 is connected to the bottom of the transmission rod 8;

[0045] When the output shaft of the oil cylinder 3 extends out, it drives the top of the transmission rod 8 to extend out of the guide hole 9, and pushes the cutter mounting member 5 to move upward through the transmission rod 8;

[0046] When the output shaft of the oil cylinder 3 retracts, the top of the transmission rod 8 is driven to move downward away from the bottom surface of the cutter mounting member 5, and the spring 7 pushes the cutter mounting member 5 and the cutter 4 to move downward.

[0047] In this embodiment, when the cylinder output shaft retracts, the bottom of the transmission rod will retract into the guide hole, and the top of the transmission rod will be flush with the top of the guide hole, or below the top surface of the guide hole, without affecting the cutter mounting and the downward movement of the cutter.

[0048] See also Figure 1 As shown, the mold 1 is provided with an upper groove 10, a middle groove 11 and a lower groove 12 which are connected to each other, and the middle groove 11 connects the upper groove 10 with the lower groove 12;

[0049] The width of the upper groove 10 is smaller than the width of the middle groove 11, and the width of the lower groove 12 is larger than the width of the middle groove 11;

[0050] The mold 1 beside the upper groove 10 is provided with a mounting groove 13 connected to the upper groove 10, the cutter insert 2 is installed in the mounting groove 13, the mounting block 6 is arranged directly below the lower groove 12, the cutter mounting member 5 is movably arranged in the lower groove 12, and the top of the cutter 4 passes through the middle groove 11 and is inserted in the upper groove 10.

[0051] In this embodiment, the cutter insert is installed in the installation groove, and the top of the cutter slides in the upper groove, which matches the inner surface of the upper groove and the side wall of the cutter insert. In this way, during the injection molding process, it can prevent plastic from leaking out from the connection between the cutter and the upper groove and the cutter insert, thereby ensuring the injection molding quality. The width of the middle groove is greater than the width of the upper groove, which is convenient for the installation, disassembly, maintenance and replacement of the cutter, and also convenient for the production of the mold. On the mold at the position where the cutter is installed, the upper groove requires high processing accuracy, and the processing accuracy of the middle groove can be lower, the processing difficulty is lower, and the processing cost can be lower. The position where the cutter is processed with high precision can only be the position where it moves in the upper groove, thus reducing the processing difficulty and processing cost as much as possible. The cutter mounting piece is arranged in the lower groove, giving the cutter mounting piece space to move up and down, and reducing the space occupied below the mold as much as possible.

[0052] The top of the cutter insert 2 is provided with a material channel 14. When the cutter 4 moves upward, the top of the cutter 4 passes through the material channel 14 and is arranged above the material channel 14.

[0053] When the cutter moves downward, the top of the cutter is flush with the bottom of the material channel.

[0054] In this embodiment, the bottom of one side of the material channel is connected to the upper groove, and the material channel is connected to the mold cavity of the mold. When the cutter moves up, the cutter passes through the material channel and is located above the material channel, separating the connection between the material channel and the mold cavity and cutting off the gate. When the cutter moves down and the top of the cutter is flush with the bottom of the material channel, the material channel and the mold cavity are connected, and normal injection molding can be performed later.

[0055] See also Figure 1 , 2 As shown, the cutter mounting member 5 includes a cutter panel 15 and a cutter bottom plate 16. The bottom of the cutter panel 15 is mounted on the top surface of the cutter bottom plate 16. The cutter panel 15 is provided with a cutter mounting groove with two ends passing therethrough.

[0056] The bottom of the cutter base plate 16 is provided with a bolt mounting hole 17 connected to the cutter mounting groove, the bottom of the cutter 4 is inserted into the cutter mounting groove, and the bottom of the cutter 4 is against the top surface of the cutter base plate 16, and a connecting bolt 18 is inserted into the bolt mounting hole 17, and the top of the connecting bolt 18 is screwed to the bottom of the cutter 4.

[0057] The cutter installation groove includes an upper cutter installation groove 19 and a lower cutter installation groove 20 which are interconnected. The bottom of the cutter 4 passes through the upper cutter installation groove 19 and is inserted into the lower cutter installation groove 20, and the outer wall of the cutter 4 is in contact with the inner wall of the upper cutter installation groove 19.

[0058] An extension block 21 is provided on the outer side of the bottom of the cutter, the top surface of the extension block 21 abuts against the top surface of the cutter mounting lower groove 20 , and the bottom surface of the extension block 21 abuts against the top surface of the cutter bottom plate 16 .

[0059] In this embodiment, in order to facilitate the installation, disassembly, maintenance and replacement of the cutter, the cutter mounting part directly adopts a cutter panel and a cutter bottom plate, the top of the cutter passes through the cutter mounting lower groove and the cutter mounting upper groove and is located above the cutter panel, and then the extension block is located in the cutter mounting lower groove, and then the cutter bottom plate and the bottom of the cutter panel are connected by bolts to limit the bottom of the cutter and the extension block in the cutter mounting upper groove and the cutter mounting lower groove, the extension block and the cutter mounting lower groove can limit the upward movement of the cutter relative to the cutter panel, and the cutter bottom plate can limit the downward movement of the cutter relative to the cutter panel, thereby limiting the movement of the cutter relative to the cutter mounting part. More preferably, the cutter is not a columnar structure, but a square structure or other shapes, so that the cutter will not rotate relative to the cutter mounting part, thereby realizing the limit of the cutter by the cutter mounting part.

[0060] See also Figure 1 As shown, a connecting screw hole is provided at the bottom of the cutter 4, and the top of the connecting bolt passes through the bolt mounting hole 17 and is screwed to the connecting screw hole;

[0061] The screw head at the bottom of the connecting bolt is arranged in the bolt mounting hole.

[0062] In this embodiment, the cutter and the cutter mounting member are further connected and fixed by providing connecting bolts and connecting screw holes, thereby preventing the cutter and the cutter mounting groove from shaking relative to each other due to a gap.

[0063] See also Figure 1 , 2 As shown, a plurality of spring mounting holes 22 are provided on the top surface of the cutter panel 15, and the plurality of spring mounting holes 22 are arranged in an array on the cutter panel 15 outside the cutter 4, and the bottom of each spring 7 is installed in one of the spring mounting holes 22; preferably, at least two spring mounting holes are respectively installed on both sides of the cutter, and the spring mounting holes on both sides are symmetrically arranged on both sides of the cutter, and the top of the spring is against the top surface of the lower groove, always giving the cutter mounting piece and the cutter a thrust to move downward.

[0064] See also Figure 1 As shown, a plurality of guide rods 23 extending downward are provided on the top surface of the lower groove 12, each of the guide rods 23 is arranged opposite to one of the spring mounting holes 22, and the upper part of each of the springs 7 is sleeved on the outside of one of the guide rods 23;

[0065] When the oil cylinder 3 is extended, the top of the cutter mounting member 5 is disposed close to the top surface of the lower groove 12 , and the bottom of the guide rod 23 is inserted into the spring mounting hole 22 .

[0066] In this embodiment, the setting of the guide rod ensures that the spring is prevented from bending or breaking during the compression and extension process, ensures that the spring is compressed or extended along the axial direction, and ensures the stability and service life of the spring.

[0067] See also Figure 1 , 2 As shown, a notch 24 is provided on the side wall of the cutter bottom plate 16, and both ends of the notch 24 are connected to the top surface and the bottom surface of the cutter bottom plate 16, and the notch 24 is arranged directly below the cutter panel 15;

[0068] The mold 1 at the side of the lower groove 12 is provided with a clearance groove 25 connected to the lower groove 12, and an adjusting bolt 26 is screwed on the top of the clearance groove 25, and an adjusting ring 27 is sleeved on the adjusting bolt 26, and one side of the adjusting ring 27 is set in the notch;

[0069] When the spring 7 is in the extended state, the bottom surface of the cutter panel 15 is close to or against the top surface of the adjustment ring 27 .

[0070] An adjusting screw hole is provided on the top surface of the clearance groove, and the top of the adjusting bolt is threadedly connected to the adjusting screw hole. The adjusting ring is sleeved on the outside of the adjusting bolt, and the top of the adjusting ring is arranged close to the top surface of the clearance groove, and the bottom of the adjusting ring is against the screw head of the adjusting bolt.

[0071] Among them, after the cutter has been used for a period of time, the top of the cutter may be worn. If the top of the cutter is worn, after the cylinder output shaft retracts and the spring recovers, when the cutter is pushed down, the bottom of the cutter will be inside the lower groove, that is, it will be below the bottom surface of the material channel (when the cutter moves up, a concave cavity will be set in the mold, and the cutter will pass through the material channel and be in the concave cavity to stably cut off the gate). The injection molding amount of the product by the injection molding machine is fixed each time, and after the cutter is worn, some plastic will enter the upper groove between the cutter and the material channel, and the plastic in the mold cavity will not be filled, resulting in unqualified products. Therefore, the conventional method is to replace the cutter or to put something between the cutter base plate and the cutter, but the model volume is relatively small and the thickness of the gasket is difficult to process. Therefore, through the existence of the adjusting bolt and the adjusting ring, only the adjusting bolt needs to be slightly turned to adjust the distance between the top of the adjusting ring and the top surface of the lower groove, thereby adjusting the height of the cutter adjustment part and the cutter after moving down, ensuring that when the cutter moves down, the bottom surface of the cutter is flush with the bottom surface of the material channel, reducing the difficulty of maintenance and also reducing the cost of maintenance and replacement.

[0072] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0073] In the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral one; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, for example, the two can form a mechanical abutment or abutment connection through abutment, contact, etc., the two can also be directly hung or hung through an intermediate medium, etc., or it can be the internal connection of the two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An injection mold in-mold hot cutting mechanism, characterized in that: It includes a cutter insert, a cylinder, a cutter, a cutter mounting member and a mounting block installed on the mold, wherein the cutter insert and the mounting block are fixedly installed on the mold; The bottom of the cutter is connected to the cutter mounting member, the middle of the cutter is movably inserted in the mold, and the top of the cutter is movably inserted in the cutter insert; The cutter mounting member is movably arranged just above the mounting block; The cutter mounting member is provided with a plurality of springs, the tops of the springs are against the mold, the springs push the cutter mounting member and the cutter to move downward, and the bottom of the cutter mounting member is arranged close to the top surface of the mounting block; The oil cylinder is fixedly mounted on the bottom surface of the mounting block, and the oil cylinder pushes the cutter mounting member and the cutter to move upwards via a transmission rod.

2. The in-mold hot cutting mechanism of the injection mold according to claim 1, characterized in that: The mounting block is provided with guide holes with two ends passing through, the transmission rod is movably arranged in the guide holes, and the output shaft at the top of the oil cylinder is connected to the bottom of the transmission rod; When the oil cylinder output shaft extends, it drives the top of the transmission rod to extend out of the guide hole, and pushes the cutter mounting member to move upward through the transmission rod; When the oil cylinder output shaft retracts, it drives the top of the transmission rod to move downward away from the bottom surface of the cutter mounting member, and the spring pushes the cutter mounting member and the cutter to move downward.

3. The injection mold in-mold hot cutting mechanism according to claim 1, characterized in that: The mold is provided with an upper groove, a middle groove and a lower groove which are interconnected, and the middle groove connects the upper groove with the lower groove; The width of the upper groove is smaller than the width of the middle groove, and the width of the lower groove is larger than the width of the middle groove; A mounting groove connected to the upper groove is provided on the mold beside the upper groove, the cutter insert is installed in the mounting groove, the mounting block is arranged directly below the lower groove, the cutter mounting piece is movably arranged in the lower groove, and the top of the cutter passes through the middle groove and is inserted in the upper groove.

4. The injection mold in-mold hot cutting mechanism according to claim 3, characterized in that: The cutter mounting member comprises a cutter panel and a cutter bottom plate. The bottom of the cutter panel is mounted on the top surface of the cutter bottom plate. The cutter panel is provided with a cutter mounting groove with two ends passing through. The bottom of the cutter base plate is provided with a bolt mounting hole connected to the cutter mounting groove, the bottom of the cutter is inserted in the cutter mounting groove, and the bottom of the cutter is against the top surface of the cutter base plate, a connecting bolt is inserted in the bolt mounting hole, and the top of the connecting bolt is screwed to the bottom of the cutter.

5. The in-mold hot cutting mechanism of the injection mold according to claim 4, characterized in that: The cutter installation groove comprises an upper cutter installation groove and a lower cutter installation groove which are interconnected, the bottom of the cutter passes through the upper cutter installation groove and is inserted into the lower cutter installation groove, and the outer wall of the cutter is in contact with the inner wall of the upper cutter installation groove; An extension block is arranged on the outer side of the bottom of the cutter, the top surface of the extension block abuts against the top surface of the cutter installation lower groove, and the bottom surface of the extension block abuts against the top surface of the cutter bottom plate.

6. The in-mold hot cutting mechanism of the injection mold according to claim 4, characterized in that: A connecting screw hole is provided at the bottom of the cutter, and the top of the connecting bolt passes through the bolt mounting hole and is screwed to the connecting screw hole; The screw head at the bottom of the connecting bolt is arranged in the bolt mounting hole.

7. The in-mold hot cutting mechanism of the injection mold according to claim 4, characterized in that: A plurality of spring mounting holes are provided on the top surface of the cutter panel, and the plurality of spring mounting holes are arranged in an array on the cutter panel outside the cutter, and the bottom of each spring is installed in one of the spring mounting holes; And / or, a plurality of guide rods extending downward are provided on the top surface of the lower groove, each of the guide rods is arranged opposite to one of the spring mounting holes, and the upper part of each of the springs is sleeved on the outside of one of the guide rods; When the oil cylinder output is extended, the top of the cutter mounting piece is arranged close to the top surface of the lower groove, and the bottom of the guide rod is inserted into the spring mounting hole.

8. The in-mold hot cutting mechanism of the injection mold according to claim 4, characterized in that: A notch is provided on the side wall of the cutter bottom plate, the two ends of the notch are connected with the top surface and the bottom surface of the cutter bottom plate, and the notch is arranged directly below the cutter panel; A clearance groove communicating with the lower groove is provided on the mold at the side of the lower groove, an adjusting bolt is screwed on the top of the clearance groove, an adjusting ring is sleeved on the adjusting bolt, and one side of the adjusting ring is arranged in the notch; When the spring is in an extended state, the bottom surface of the cutter panel is close to or against the top surface of the adjusting ring.

9. The injection mold in-mold hot cutting mechanism according to claim 8, characterized in that: An adjusting screw hole is provided on the top surface of the clearance groove, and the top of the adjusting bolt is threadedly connected to the adjusting screw hole. The adjusting ring is sleeved on the outside of the adjusting bolt, and the top of the adjusting ring is arranged close to the top surface of the clearance groove, and the bottom of the adjusting ring is against the screw head of the adjusting bolt.

10. The injection mold in-mold hot cutting mechanism according to claim 1, characterized in that: A material channel is provided on the top of the cutter insert, and when the cutter moves upward, the top of the cutter passes through the material channel and is arranged above the material channel; When the cutter moves downward, the top of the cutter is flush with the bottom of the material channel.

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