In-mold hot cutting injection mold

Abstract

The utility model discloses an in-mold hot cutting injection mold, which belongs to the technical field of molds and comprises a base, a lower mold is arranged at the upper end of the base, an upper mold is arranged on the upper side of the lower mold, a mold cavity is arranged at the upper end of the lower mold, a sprue is arranged on the upper side of one end of the lower mold, and an electric push rod is arranged on one side of the upper end of the upper mold and corresponds to the sprue. By arranging the water cooling assembly, opening the valve on the folding pipe, conveying water in the water storage tank into the water cooling cavity through the water pump I, discharging air in the water cooling cavity out of the water cooling cavity through the folding pipe, and closing the valve on the folding pipe, the temperature of the lower mold is increased when plastic is cooled and molded in the mold cavity; water in the water-cooling cavity can cool the lower mold in a water-cooling mode, used water is discharged into the water-cooling box to be cooled and can be conveyed back to the water storage box through the second water pump and the water return pipe, the lower mold can be cooled by arranging the water-cooling assembly, and the cooling forming speed of plastic in the mold cavity is increased.

Description

Technical Field

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

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry".

[0003] Chinese patent application No. 2020213711623 discloses an injection mold in-mold hot cutting mechanism, which relates to the technical field of in-mold hot cutting mechanism structure, and solves the problem that the existing injection mold in-mold hot cutting mechanism cannot quickly replace the cutter when the cutter is worn. The upper end of the lower mold is provided with a limited hole groove, one side of the limited hole groove is provided with a mold cavity, the mold cavity is provided with a molding groove, one side of the molding groove is provided with an inlet, the upper end of the inlet is installed with a limited stopper, the inside of the limited stopper is provided with a cutter groove, the upper mold is installed above the lower mold, the inside of the upper mold is provided with a limited slide, the upper end of the limited slide is installed with a hydraulic cylinder, the lower end of the hydraulic cylinder is installed with a telescopic rod, the lower end of the telescopic rod is installed with a fixed seat, the lower end of the fixed seat is installed with a cutter mounting seat, the inside of the cutter mounting seat is provided with a cutter mounting groove, and the inside of the cutter mounting groove is installed with a cutter.

[0004] The above-mentioned patent does not have the function of dissipating heat and cooling the lower mold, and the plastic is cooled and molded slowly in the mold cavity of the lower mold. At the same time, it is inconvenient to take out the plastic after cooling and molding in the mold cavity, and its practicality is poor. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides an in-mold hot-cut injection mold, which has the characteristics of being able to dissipate heat and cool the lower mold and quickly cool the plastic to form.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an in-mold hot-cut injection mold, comprising a base, a lower mold is arranged on the upper end of the base, an upper mold is arranged on the upper side of the lower mold, a mold cavity is arranged on the upper end of the lower mold, an inlet gate is arranged on the upper side of one end of the lower mold, an electric push rod is arranged at a position corresponding to the inlet gate on one side of the upper end of the upper mold, a cutter is arranged at the output end of the electric push rod, and water cooling components are arranged on both sides of the upper end of the base.

[0007] Preferably, the water cooling component includes a water storage tank, a first water pump, a water cooling box, a folded pipe, a second water pump, a return pipe, a water cooling chamber and a heat dissipation component, wherein a water storage tank is arranged on one side of the upper end of the base, a water cooling box is arranged on the other side of the upper end of the base, a water cooling chamber is arranged inside the lower mold, a first water pump is arranged between the water cooling chamber and the water storage tank and between the water cooling chamber and the water cooling box, a folded pipe is arranged on the upper side of the front end of the lower mold at a position corresponding to the water cooling chamber, a second water pump is arranged at the rear end of the water cooling box, a return pipe is arranged between the second water pump and the water storage tank, and a heat dissipation component is arranged inside the water cooling box.

[0008] Preferably, the heat dissipation assembly includes heat dissipation fins, inclined plates, heat absorbing rods and heat conducting rods, wherein a plurality of inclined plates are arranged on the upper side of the interior of the water cooling box, a plurality of heat absorbing rods are arranged on the lower side of the interior of the water cooling box, a heat conducting rod is arranged at the front end of the heat absorbing rod, and a heat dissipation fin is arranged at the front end of the heat absorbing rod.

[0009] Preferably, a valve is provided on the folded pipe, a water injection pipe is provided on one side of the upper end of the water storage tank, and the water storage tank and the base as well as the water cooling box and the base are connected by bolts.

[0010] Preferably, a motor is arranged in the middle position of the upper end of the base, a screw is arranged at the output end of the motor, a movable plate is arranged on the surface of the screw, push rods are arranged on both sides of the upper end of the movable plate, and limit strips are arranged at positions corresponding to the movable plate at both ends of the base.

[0011] Preferably, when the lower end of the movable plate contacts the upper end of the limiting strip, the upper end of the ejector rod is flush with the lower end of the interior of the mold cavity, and a bearing rotating seat is provided between the screw rod and the lower mold.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model sets a water cooling component, opens the valve on the folded pipe, and the water pump 1 delivers the water in the water tank to the water cooling chamber. The air in the water cooling chamber is discharged from the water cooling chamber through the folded pipe, and then the valve on the folded pipe is closed. When the plastic is cooled and formed in the mold cavity, the temperature of the lower mold will rise. The water in the water cooling chamber can cool the lower mold. The used water is discharged into the water cooling box for cooling, and can be delivered back to the water tank through the water pump 2 and the return pipe. The lower mold can be cooled and the cooling and molding speed of the plastic in the mold cavity can be improved by setting the water cooling component.

[0014] 2. The utility model sets a push rod. After the plastic is cooled and formed in the mold cavity, the motor is turned on to drive the screw to rotate. The rotation of the screw drives the movable plate to move upward. The movable plate pushes a number of push rods to move upward. The push rod can eject the molded plastic in the mold cavity. The limit bar resets the movable plate to position. By setting the push rod, the cooled and formed plastic in the mold cavity can be ejected, which is convenient for material removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a left-side stereogram of the utility model;

[0017] Figure 3 It is a cutaway stereogram of the upper mold and the lower mold of the utility model;

[0018] Figure 4 This is a cutaway perspective view of the water cooling box of the utility model;

[0019] In the figure: 1. Base; 2. Lower mold; 3. Water cooling assembly; 31. Water storage tank; 32. Water pump 1; 33. Water cooling box; 34. Folding pipe; 35. Water pump 2; 36. Return pipe; 37. Water cooling chamber; 38. Heat dissipation assembly; 381. Heat dissipation fin; 382. Inclined plate; 383. Heat absorbing rod; 384. Heat conducting rod; 4. Mold cavity; 5. Upper mold; 6. Electric push rod; 7. Inlet gate; 8. Motor; 9. Screw; 10. Moving plate; 11. Ejector rod; 12. Limit strip; 13. Cutter. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 1-4 The utility model provides the following technical solutions: an in-mold hot-cut injection mold, comprising a base 1, a lower mold 2 is arranged on the upper end of the base 1, an upper mold 5 is arranged on the upper side of the lower mold 2, a mold cavity 4 is arranged on the upper end of the lower mold 2, a gate 7 is arranged on the upper side of one end of the lower mold 2, an electric push rod 6 is arranged at a position corresponding to the gate 7 on one side of the upper end of the upper mold 5, a cutter 13 is arranged at the output end of the electric push rod 6, and water cooling components 3 are arranged on both sides of the upper end of the base 1.

[0023] Specifically, the water cooling assembly 3 includes a water storage tank 31, a water pump 1 32, a water cooling box 33, a folded pipe 34, a water pump 2 35, a return pipe 36, a water cooling chamber 37 and a heat dissipation assembly 38, wherein a water storage tank 31 is arranged on one side of the upper end of the base 1, a water cooling box 33 is arranged on the other side of the upper end of the base 1, a water cooling chamber 37 is arranged inside the lower mold 2, a water pump 1 32 is arranged between the water cooling chamber 37 and the water storage tank 31 and between the water cooling chamber 37 and the water cooling box 33, a folded pipe 34 is arranged on the upper side of the front end of the lower mold 2 at a position corresponding to the water cooling chamber 37, a water pump 2 35 is arranged at the rear end of the water cooling box 33, a return pipe 36 is arranged between the water pump 2 35 and the water storage tank 31, and a heat dissipation assembly 38 is arranged inside the water cooling box 33.

[0024] By adopting the above technical solution, the valve on the folded tube 34 is opened, and the water pump 1 32 transports the water in the water tank 31 to the water cooling chamber 37. The air in the water cooling chamber 37 is discharged from the water cooling chamber 37 through the folded tube 34, and then the valve on the folded tube 34 is closed. When the plastic is cooled and formed in the mold cavity 4, the temperature of the lower mold 2 will increase. The water in the water cooling chamber 37 can be used to cool the lower mold 2. The used water is discharged into the water cooling box 33 for cooling, and can be transported back to the water tank 31 through the water pump 2 35 and the return pipe 36. By setting the water cooling component 3, the lower mold 2 can be cooled, thereby improving the cooling and molding speed of the plastic in the mold cavity 4.

[0025] Specifically, the heat dissipation assembly 38 includes a heat dissipation fin 381, an inclined plate 382, ​​a heat absorbing rod 383 and a heat conducting rod 384, wherein a plurality of inclined plates 382 are arranged on the upper side of the water cooling box 33, a plurality of heat absorbing rods 383 are arranged on the lower side of the water cooling box 33, a heat conducting rod 384 is arranged at the front end of the heat absorbing rod 383, and a heat dissipation fin 381 is arranged at the front end of the heat absorbing rod 383.

[0026] By adopting the above technical solution and setting up the heat dissipation component 38, when used water enters the water cooling box 33, the water flows on several inclined plates 382 to increase the contact time with the air. At the same time, the heat absorbing rod 383 can absorb the heat in the water, and the heat conducting rod 384 transfers the heat to the heat dissipation fins 381 for heat dissipation, thereby increasing the cooling speed of the water in the water cooling box 33.

[0027] Specifically, a valve is provided on the folded pipe 34, a water injection pipe is provided on one side of the upper end of the water storage tank 31, and the water storage tank 31 and the base 1 as well as the water cooling box 33 and the base 1 are connected by bolts.

[0028] By adopting the above technical solution, a valve is provided to open and close the folding tube 34, a water injection pipe is provided to facilitate water replenishment in the water storage tank 31, and the bolt connection makes the water storage tank 31 and the water cooling box 33 more stable.

[0029] When the present embodiment is used, when the in-mold hot-cut injection mold is used, the device is installed in a suitable position, the upper mold 5 is connected to the driving mechanism, the driving mechanism pushes the upper mold 5 to the upper end of the lower mold 2, and the plastic is injected into the mold cavity 4 through the inlet gate 7. The plastic is cooled and formed in the mold cavity 4. After forming, the electric push rod 6 is turned on to push the cutter 13 to move downward to cut the plastic in the inlet gate 7. By setting a water cooling component 3, the valve on the folded tube 34 is opened, and the water pump 32 transports the water in the water tank 31 to the water cooling chamber 37. The air in the water cooling chamber 37 is discharged from the water cooling chamber 37 through the folded tube 34, and then the valve on the folded tube 34 is closed. When the plastic is cooled and formed in the mold cavity 4, This causes the temperature of the lower mold 2 to rise. The water in the water-cooling chamber 37 can cool the lower mold 2. The used water is discharged into the water-cooling box 33 for cooling, and can be transported back to the water storage tank 31 through the water pump 2 35 and the return pipe 36. By setting up the water-cooling component 3, the lower mold 2 can be cooled and the cooling and molding speed of the plastic in the mold cavity 4 can be improved. By setting up the heat dissipation component 38, when the used water enters the water-cooling box 33, the water flows on several inclined plates 382 to increase the contact time with the air. At the same time, the heat absorbing rod 383 can absorb the heat in the water, and the heat conducting rod 384 transfers the heat to the heat dissipation fins 381 for heat dissipation, thereby improving the cooling speed of the water in the water-cooling box 33.

[0030] Example 2

[0031] The difference between this embodiment and embodiment 1 is that a motor 8 is arranged in the middle position of the upper end of the base 1, a screw rod 9 is arranged at the output end of the motor 8, a movable plate 10 is arranged on the surface of the screw rod 9, top rods 11 are arranged on both sides of the upper end of the movable plate 10, and limit strips 12 are arranged at the positions corresponding to the movable plate 10 at the two ends of the base 1.

[0032] By adopting the above technical solution, after the plastic is cooled and formed in the mold cavity 4, the motor 8 is turned on to drive the screw 9 to rotate, and the rotation of the screw 9 drives the movable plate 10 to move upward. The movable plate 10 pushes a number of ejector rods 11 to move upward. The ejector rods 11 can eject the molded plastic in the mold cavity 4. The limit strips 12 reset the movable plate 10 to position it. By setting the ejector rods 11, the cooled and formed plastic in the mold cavity 4 can be ejected, which is convenient for material removal.

[0033] Specifically, when the lower end of the movable plate 10 contacts the upper end of the limiting strip 12 , the upper end of the ejector rod 11 is flush with the lower end of the interior of the mold cavity 4 , and a bearing rotating seat is provided between the screw rod 9 and the lower mold 2 .

[0034] By adopting the above technical solution, the upper end of the ejector rod 11 protrudes from the upper end of the mold cavity 4 to affect the plastic cooling molding quality, and the screw rod 9 can rotate on the lower mold 2.

[0035] When this embodiment is used, by setting the ejector rod 11, after the plastic is cooled and formed in the mold cavity 4, the motor 8 is turned on to drive the screw rod 9 to rotate, and the rotation of the screw rod 9 drives the movable plate 10 to move upward. The movable plate 10 pushes a number of ejector rods 11 to move upward, and the ejector rod 11 can eject the molded plastic in the mold cavity 4. The limit strip 12 resets the movable plate 10 to position it. By setting the ejector rod 11, the cooled and formed plastic in the mold cavity 4 can be ejected, which is convenient for material removal.

[0036] In the present utility model, water pump 1 32 and water pump 2 35 are existing disclosed technologies, and the selected model is BJZ037.

[0037] The motor 8 in the utility model is an existing disclosed technology, and the selected model is 5IK120GN-CF.

[0038] The structure and working principle of the base 1, lower mold 2, mold cavity 4, upper mold 5, electric push rod 6, gate 7 and cutter 13 in the utility model have been disclosed in an injection mold in-mold hot cutting mechanism disclosed in Chinese patent application No. 2020213711623. Its working principle is to connect the upper mold 5 with the driving mechanism, the driving mechanism pushes the upper mold 5 to the upper end of the lower mold 2, and injects the plastic into the mold cavity 4 through the gate 7. The plastic is cooled and formed in the mold cavity 4. After forming, the electric push rod 6 is turned on to push the cutter 13 to move downward to cut the plastic in the gate 7.

[0039] The working principle and use process of the utility model are as follows: when the in-mold hot-cut injection mold is used, the device is installed in a suitable position, the upper mold 5 is connected to the driving mechanism, the driving mechanism pushes the upper mold 5 to the upper end of the lower mold 2, and the plastic is injected into the mold cavity 4 through the inlet gate 7. The plastic is cooled and formed in the mold cavity 4. After forming, the electric push rod 6 is turned on to push the cutter 13 to move downward to cut the plastic in the inlet gate 7. By setting a water cooling component 3, the valve on the folded tube 34 is opened, and the water pump 1 32 transports the water in the water tank 31 to the water cooling chamber 37. The air in the water cooling chamber 37 is discharged from the water cooling chamber 37 through the folded tube 34, and then the valve on the folded tube 34 is closed. When the plastic is cooled and formed in the mold cavity 4, the temperature of the lower mold 2 will rise. The water in the water cooling chamber 37 can cool the lower mold 2. The used water is discharged into the water cooling box 33 for cooling, and can be transported back through the water pump 2 35 and the return pipe 36 The water storage tank 31 can cool down the lower mold 2 by setting a water cooling component 3, thereby improving the cooling and molding speed of the plastic in the mold cavity 4. By setting a heat dissipation component 38, when used water enters the water cooling box 33, the water flows on several inclined plates 382 to increase the contact time with the air. At the same time, the heat absorbing rod 383 can absorb the heat in the water, and the heat conducting rod 384 transfers the heat to the heat dissipation fins 381 for heat dissipation, thereby improving the cooling speed of the water in the water cooling box 33. By setting a push rod 11, after the plastic is cooled and molded in the mold cavity 4, the motor 8 is turned on to drive the screw rod 9 to rotate, and the rotation of the screw rod 9 drives the movable plate 10 to move upward. The movable plate 10 pushes several push rods 11 to move upward, and the push rod 11 can eject the molded plastic in the mold cavity 4. The limit strip 12 resets the movable plate 10 for positioning. By setting the push rod 11, the cooled and molded plastic in the mold cavity 4 can be ejected, which is convenient for material removal.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-mold hot-cut injection mold, comprising a base, characterized in that: The upper end of the base is provided with a lower mold, the upper side of the lower mold is provided with an upper mold, the upper end of the lower mold is provided with a mold cavity, the upper side of one end of the lower mold is provided with an inlet gate, one side of the upper end of the upper mold is provided with an electric push rod at a position corresponding to the inlet gate, the output end of the electric push rod is provided with a cutter, and both sides of the upper end of the base are provided with water cooling components; The water cooling component includes a water storage tank, a first water pump, a water cooling box, a folded pipe, a second water pump, a return pipe, a water cooling chamber and a heat dissipation component, wherein a water storage tank is arranged on one side of the upper end of the base, a water cooling box is arranged on the other side of the upper end of the base, a water cooling chamber is arranged inside the lower mold, a first water pump is arranged between the water cooling chamber and the water storage tank and between the water cooling chamber and the water cooling box, a folded pipe is arranged at a position corresponding to the water cooling chamber on the upper side of the front end of the lower mold, a second water pump is arranged at the rear end of the water cooling box, a return pipe is arranged between the second water pump and the water storage tank, and a heat dissipation component is arranged inside the water cooling box.

2. The in-mold hot-cut injection mold according to claim 1, characterized in that: The heat dissipation component includes heat dissipation fins, inclined plates, heat absorbing rods and heat conducting rods, wherein a plurality of inclined plates are arranged on the upper side of the interior of the water cooling box, a plurality of heat absorbing rods are arranged on the lower side of the interior of the water cooling box, a heat conducting rod is arranged at the front end of the heat absorbing rod, and a heat dissipation fin is arranged at the front end of the heat absorbing rod.

3. The in-mold hot-cut injection mold according to claim 1, characterized in that: A valve is arranged on the folded pipe, a water injection pipe is arranged on one side of the upper end of the water storage tank, and the water storage tank and the base as well as the water cooling box and the base are all connected by bolts.

4. The in-mold hot-cut injection mold according to claim 1, characterized in that: A motor is arranged at the middle position of the upper end of the base, a screw rod is arranged at the output end of the motor, a movable plate is arranged on the surface of the screw rod, push rods are arranged on both sides of the upper end of the movable plate, and limit strips are arranged at the positions corresponding to the movable plate at the two ends of the base.

5. The in-mold hot-cut injection mold according to claim 4, characterized in that: When the lower end of the movable plate contacts the upper end of the limiting strip, the upper end of the ejector rod is flush with the lower end of the mold cavity, and a bearing rotating seat is arranged between the screw rod and the lower mold.

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