Injection mold for in-mold hot cutting

Abstract

The utility model discloses an injection mold for in-mold hot cutting, which belongs to the technical field of injection molds and comprises a lower mold, a limit rod is arranged on the lower mold, an upper mold is slidably connected onto the limit rod, a mounting frame is fixedly connected onto the upper mold, an air cylinder is fixedly connected onto the mounting frame, and a cutter is fixedly connected onto the output end of the air cylinder. The limiting rod is provided with a cutter groove, one side of the limiting rod is rotationally connected with a worm, the worm is in meshed connection with a worm gear, the worm gear is fixedly connected with a connecting shaft, the connecting shaft is fixedly connected with a baffle, and the baffle is rotationally connected into the cutter groove; raw materials can be prevented from rushing out of the cutter groove to damage the cutter through the baffle, the worm is rotated to open the baffle during cutting, a material handle can be cut off by starting the air cylinder, the raw materials can be effectively prevented from overflowing through the feeding plate and the check block, the cutter is effectively protected, the service life is prolonged, and the cutting efficiency is improved. And the forming efficiency of the grinding tool is also improved.

Description

Technical Field

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

[0002] Injection molds are tools for producing plastic products and also tools that give plastic products complete structures and precise dimensions. Usually, after plastic parts are injection molded, the sprue and the product are connected through a gate. Workers need to trim the gate, which is labor-intensive and the gate trimming is not beautiful.

[0003] Existing injection molded parts products generally have a gate handle attached to the product after the injection molding is completed and demolded. The gate handle is then cut off by manual knife cutting or tooling. Whether the gate is cut by manual knife cutting or tooling, it will cause the product quality to be reduced. At the same time, manual operation may cause burrs or different cutting positions, which affects the aesthetics of the product and causes unnecessary waste. Utility Model Content

[0004] The utility model solves the technical problems in the above-mentioned background technology and provides an injection mold for in-mold hot cutting.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] An injection mold for in-mold hot cutting comprises a lower mold, a limit rod is provided on the lower mold, an upper mold is slidably connected to the limit rod, a mounting frame is fixedly connected to the upper mold, a cylinder is fixedly connected to the mounting frame, a cutter is fixedly connected to the output end of the cylinder, a knife groove is provided on the limit rod, a worm is rotatably connected to one side of the limit rod, the worm is meshingly connected to a worm wheel, a connecting shaft is fixedly connected to the worm wheel, a baffle is fixedly connected to the connecting shaft, the baffle is rotatably connected to the knife groove, and a knob is provided at one end of the worm.

[0007] Preferably, a fixed block is provided on one side of the bottom of the lower mold, a spring 1 is fixedly connected in the fixed block, one end of the spring 1 is fixedly connected to a wedge block, a socket is provided on the lower mold, a limiting groove is provided on the lower mold, the fixed block is slidably connected in the socket, the wedge block slides in the fixed block, the wedge block slides in the limiting groove, a spring 2 is fixedly connected in the socket, and one end of the spring 2 is fixedly connected to the fixed block.

[0008] Preferably, a feed port is provided on one side of the lower die, a fixed cylinder is fixedly connected to one side of the feed port, a feed plate is rotatably connected inside the fixed cylinder, and a stopper is provided inside the fixed cylinder.

[0009] Preferably, a mounting block is provided at the bottom of one side of the lower mold, and the mounting blocks are provided in four groups, and mounting holes are provided on the mounting blocks.

[0010] Preferably, the limiting rods are provided with four groups, the mounting frame is in a U-shape, the cutting knife is located on the upper side of the knife groove, and the cutting knife is attached to the feed port.

[0011] Preferably, the fixing blocks are provided with two groups and are symmetrically arranged, and each group of the fixing blocks is respectively provided with two groups of springs one, and the sockets are provided with two groups, and each group of the sockets is respectively provided with two groups of springs two.

[0012] Preferably, the feed port is located below the insertion port, the fixing cylinder is located below the limiting groove, and the stopper is located on the outside of the feed plate and fits the feed plate.

[0013] With the above structure, the utility model has the following advantages:

[0014] 1. The utility model can prevent the raw material from gushing out of the knife groove and damaging the cutter through the baffle. When cutting, the worm is turned to open the baffle, and the cylinder is started to cut off the material handle. The feed plate and the baffle can also effectively prevent the raw material from overflowing, which not only effectively protects the cutter and increases its service life, but also improves the efficiency of mold forming.

[0015] 2. The utility model facilitates fixing the device through the mounting holes on the four groups of mounting blocks, and then the wedge-shaped block is pressed inward to disengage from the socket. Under the action of the second spring, the upper mold will automatically pop out to a certain height, which is convenient for taking out the injection molded mold, thereby improving the practicality of the device.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of an injection mold for in-mold hot cutting of the utility model;

[0019] Figure 2This is an exploded diagram of the structure of an injection mold for in-mold hot cutting of the utility model;

[0020] Figure 3 It is a cross-sectional view of an injection mold for in-mold hot cutting of the utility model;

[0021] Figure 4 yes Figure 2 A in the enlarged view;

[0022] Figure 5 yes Figure 3 Enlarged view of point B in .

[0023] As shown in the figure: 1. Lower die; 2. Limit rod; 3. Upper die; 4. Mounting bracket; 5. Cylinder; 6. Cutter; 7. Knife groove; 8. Worm; 9. Worm wheel; 10. Connecting shaft; 11. Baffle; 12. Knob; 13. Fixed block; 14. Spring 1; 15. Wedge block; 16. Socket; 17. Limit groove; 18. Spring 2; 19. Feed port; 20. Fixed cylinder; 21. Feed plate; 22. Baffle; 23. Mounting block; 24. Mounting hole. Specific implementation plan

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] The utility model is further described in detail below in conjunction with the full text:

[0027] Combined with Figures 1 to 5, an injection mold for in-mold hot cutting, comprising a lower mold 1, a limiting rod 2 is provided on the lower mold 1, an upper mold 3 is slidably connected to the limiting rod 2, the upper mold 3 is fixedly connected to a mounting frame 4, the mounting frame 4 is fixedly connected to a cylinder 5, a cutter 6 is fixedly connected to the output end of the cylinder 5, a knife groove 7 is provided on the limiting rod 2, a worm 8 is rotatably connected to one side of the limiting rod 2, the worm 8 is meshingly connected to a worm wheel 9, a connecting shaft 10 is fixedly connected to the worm wheel 9, a baffle 11 is fixedly connected to the connecting shaft 10, the baffle 11 is rotatably connected to the knife groove 7, a knob 12 is provided at one end of the worm 8, the baffle 11 can be used to prevent the raw material from gushing out of the knife groove 7 to damage the cutter 6, when cutting, the worm 8 is rotated to open the baffle 11, and the cylinder 5 is started to cut off the material handle, and the feed plate 21 and the stopper 22 can also effectively prevent the raw material from overflowing, which not only effectively protects the cutter 6 and enhances its service life, but also improves the efficiency of mold forming.

[0028] Among them, a fixed block 13 is provided on one side of the bottom of the lower mold 1, a spring 14 is fixedly connected in the fixed block 13, one end of the spring 14 is fixedly connected to a wedge block 15, a socket 16 is provided on the lower mold 1, a limiting groove 17 is provided on the lower mold 1, the fixed block 13 is slidably connected in the socket 16, the wedge block 15 slides in the fixed block 13, the wedge block 15 slides in the limiting groove 17, a spring 2 18 is fixedly connected in the socket 16, one end of the spring 2 18 is fixedly connected to the fixed block 13, a feed port 19 is provided on one side of the lower mold 1, a fixed cylinder 20 is fixedly connected to one side of the feed port 19, a feed plate 21 is rotatably connected in the fixed cylinder 20, a stopper 22 is provided in the fixed cylinder 20, a mounting block 23 is provided at the bottom of one side of the lower mold 1, the mounting block 23 is provided with four groups, and a mounting hole 24 is provided on the mounting block 23 , the limit rod 2 is provided with four groups, the shape of the mounting frame 4 is U-shaped, the cutter 6 is located on the upper side of the knife groove 7, the cutter 6 is fitted to the feed port 19, the fixing block 13 is provided with two groups and is symmetrically arranged, each group of the fixing block 13 is provided with two groups of springs 14, the socket 16 is provided with two groups, each group of the socket 16 is provided with two groups of springs 2 18, the feed port 19 is located below the socket 16, the fixing cylinder 20 is located below the limit groove 17, the stopper 22 is located on the outside of the feed plate 21 and fits the feed plate 21, and the mounting holes 24 on the four groups of mounting blocks 23 are used to fix the device, and then the wedge block 15 is pressed inward to disengage from the socket 16. Under the action of the spring 2 18, the upper mold 3 will automatically pop up to a certain height, which is convenient for removing the injection mold, thereby improving the practicality of the device.

[0029] Working principle of the utility model: when in use, first use bolts to fix the device through the mounting holes 24 on the mounting block 23, the operator first connects the raw material pipeline to the fixed cylinder 20, and injects the raw material, at this time the raw material will push the feed plate 21 to rotate in the fixed cylinder 20, and enter the lower mold 1 through the feed port 19, after all the injection is completed, the feed plate 21 will automatically reset and fit to the stopper 22 under the extrusion of the internal fillet, so that the raw material is cooled and formed, and then the knob 12 is manually turned to drive the worm 8 to rotate, so that the worm gear 9 drives the connecting shaft 10 to rotate, and drives the baffle 11 to rotate in the knife groove 7, open the knife groove 7, and then start The moving cylinder 5 pushes the cutter 6 to move downward to cut off the material handle. After the cutting is completed, the product formed in the lower mold 1 needs to be taken out. At the same time, the wedge blocks 15 on both sides are pressed and the spring 14 is squeezed to make the wedge blocks 15 completely slide into the fixed blocks 13 and disengage from the limit grooves 17. At this time, under the action of the spring 2 18, the upper mold 3 will be driven to slide upward in the limit rod 2 through the fixed block 13, so that the upper mold 3 can be removed and the product formed in the lower mold 1 can be taken out. After taking it out, the upper mold 3 is slid and inserted onto the limit rod 2 again, so that the fixed block 13 is inserted into the socket 16, and the wedge block 15 is inserted into the limit groove 17, so that the lower mold 1 and the upper mold 3 are fixed.

[0030] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. An injection mold for in-mold hot cutting, comprising a lower mold (1), characterized in that: The lower die (1) is provided with a limiting rod (2), the limiting rod (2) is slidably connected to an upper die (3), the upper die (3) is fixedly connected to a mounting frame (4), the mounting frame (4) is fixedly connected to a cylinder (5), the output end of the cylinder (5) is fixedly connected to a cutter (6), the limiting rod (2) is provided with a knife groove (7), one side of the limiting rod (2) is rotatably connected to a worm (8), the worm (8) is meshingly connected to a worm wheel (9), the worm wheel (9) is fixedly connected to a connecting shaft (10), the connecting shaft (10) is fixedly connected to a baffle (11), the baffle (11) is rotatably connected to the knife groove (7), and one end of the worm (8) is provided with a knob (12).

2. The injection mold for in-mold hot cutting according to claim 1, characterized in that: A fixed block (13) is provided on one side of the bottom of the lower mold (1), a spring 1 (14) is fixedly connected inside the fixed block (13), one end of the spring 1 (14) is fixedly connected to a wedge block (15), a socket (16) is provided on the lower mold (1), a limiting groove (17) is provided on the lower mold (1), the fixed block (13) is slidably connected inside the socket (16), the wedge block (15) slides inside the fixed block (13), the wedge block (15) slides inside the limiting groove (17), a spring 2 (18) is fixedly connected inside the socket (16), one end of the spring 2 (18) is fixedly connected to the fixed block (13).

3. The injection mold for in-mold hot cutting according to claim 2, characterized in that: A feed port (19) is provided on one side of the lower die (1), a fixed cylinder (20) is fixedly connected to one side of the feed port (19), a feed plate (21) is rotatably connected inside the fixed cylinder (20), and a stopper (22) is provided inside the fixed cylinder (20).

4. The injection mold for in-mold hot cutting according to claim 3, characterized in that: A mounting block (23) is provided at the bottom of one side of the lower mold (1), and the mounting block (23) is provided in four groups. The mounting block (23) is provided with a mounting hole (24).

5. The injection mold for in-mold hot cutting according to claim 4, characterized in that: The limiting rods (2) are provided with four groups, the mounting frame (4) is in a U-shape, the cutting knife (6) is located on one side above the knife groove (7), and the cutting knife (6) is attached to the feed port (19).

6. The injection mold for in-mold hot cutting according to claim 5, characterized in that: The fixing blocks (13) are provided in two groups and are symmetrically arranged. Two groups of springs (14) are respectively arranged in each group of the fixing blocks (13). The sockets (16) are provided in two groups. Two groups of springs (18) are respectively arranged in each group of the sockets (16).

7. The injection mold for in-mold hot cutting according to claim 6, characterized in that: The feed port (19) is located below the insertion port (16), the fixing cylinder (20) is located below the limiting groove (17), and the stopper (22) is located outside the feed plate (21) and is attached to the feed plate (21).

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