Simple injection mold capable of rapidly replacing mold core

Abstract

The simple injection mold comprises a bottom mold frame, a lower mold core, an upper mold body, an upper mold core and an injection molding pipe, the lower mold core is tightly attached to the middle of the upper surface of the bottom mold frame, the upper mold body is fixed to the upper portion of the bottom mold frame through a screw rod, and the upper mold core is fixed to the middle of the bottom end of the upper mold body; injection molding pipes are embedded into the left end and the right end of the interior of the upper mold, a lower mold is fixed to the middle of the upper surface of the bottom mold frame, a limiting column is vertically fixed to the outer side of the bottom end of the upper mold, a connecting cylinder is fixed to the outer side of the upper surface of the bottom mold frame, and an auxiliary mechanism is arranged on the lower portion of the interior of the bottom mold frame. After the lower mold core is jacked up, the lower mold core with the high temperature is rapidly cooled, a worker can conveniently and rapidly take out the mold core, the mold core replacement efficiency is improved, and use and operation are easier and more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, and in particular to a simple injection mold for quickly replacing a mold core. Background Art

[0002] A mold is a tool used to shape objects. This tool consists 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 used for compression molding or injection molding of engineering plastics, rubber, ceramics and other products. It is used to make the blank into a plastic product with a specific shape and size under the action of external force. Injection molding is also called injection molding. It is a molding method of injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automation of operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and molding fields such as complex-shaped products. In the prior art, during re-injection molding, because the silicone and glue on the mold are baked at high temperature and in contact for a long time, the silicone on the mold will fail after a certain number of uses. The mold needs to remove the old glue and re-encapsulate before it can be used, which is not only troublesome but also inefficient in mold use. Therefore, the prior art proposes an injection mold with a replaceable mold core with patent number CN202321080331.1, which replaces the traditional injection mold. The mold frame and the mold core are of detachable design, and the mold core can be replaced quickly without the aid of external equipment. When replacing, it is only necessary to insert the card block on the mold core into the card slot in the mold frame, and then turn the handle so that the screw fixes the card block to complete the replacement of the mold core. At the same time, when the mold core needs to be replaced, the mold core that needs to be replaced can be lifted up through the setting of the jacking structure, which is convenient for the staff to take out the mold core, thereby improving the efficiency of replacing the mold core and facilitating the operation of the staff.

[0003] However, in actual use of this device, due to the high internal temperature of the mold core after injection molding, the mold core needs to be placed for a long time to cool naturally to room temperature before it can be taken out. Otherwise, the high temperature mold core is very likely to cause harm to the staff. Long-term placement leads to low replacement efficiency and is not convenient for staff to operate. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a simple injection mold with a quick replacement mold core to solve the problems described in the above background technology.

[0005] The present invention discloses a simple injection mold for quickly replacing mold cores, which is achieved by the following specific technical means: a simple injection mold for quickly replacing mold cores, comprising a bottom mold frame, a lower mold core, an upper mold, an upper mold core and an injection tube, the middle of the upper surface of the bottom mold frame is tightly attached to the lower mold core, the upper mold is fixed to the top of the bottom mold frame by a screw, the upper mold core is fixed to the middle of the bottom end of the upper mold, the injection tube is embedded in the left and right ends of the upper mold, the lower mold is fixed to the middle of the upper surface of the bottom mold frame, a limiting column is vertically fixed to the outer side of the bottom end of the upper mold, a connecting tube is fixed to the outer side of the upper surface of the bottom mold frame, and an auxiliary mechanism is arranged at the lower part of the inside of the bottom mold frame.

[0006] As a further solution of the present invention: the limiting columns at the four corners of the bottom of the upper mold are vertically embedded in the connecting tubes at the four corners above the bottom mold frame, the outer wall of the limiting column is close to the inner wall of the connecting tube, and the screw on the connecting tube is horizontally embedded in the limiting hole inside the limiting column.

[0007] As a further solution of the present invention: a guide cylinder is embedded at the top of the connecting cylinder, and a "trumpet" shaped hollow guide groove which is larger at the top and smaller at the bottom is provided at the top of the guide cylinder. The cross-sectional area of ​​the hollow groove at the bottom of the guide cylinder is consistent with the cross-sectional area of ​​the limiting column.

[0008] As a further solution of the present invention: the auxiliary mechanism is composed of a mounting plate, a limit block, a support column, a support plate, an outer retaining ring, a micro servo motor, a screw, an induced draft fan and a guide rod; Specifically, mounting plates are laterally embedded at the left and right ends of the lower interior of the bottom mold frame, limiting blocks are laterally fixed at the middle part of the outer side of the mounting plates, support columns are fixed on the upper surfaces of the two mounting plates, support plates are fixed on the tops of the support columns, outer retaining rings are fixed below the outer walls of the support columns, micro servo motors are fixed at the left and right ends of the bottom of the bottom mold frame, screw rods are vertically rotatably connected to the left and right ends of the bottom of the bottom mold frame, induced draft fans are fixed at the front and rear ends of the bottom of the bottom mold frame, and guide rods are vertically fixed to the left and right ends of the bottom of the bottom mold frame.

[0009] As a further solution of the present invention: the screw rod is vertically embedded in the interior of the limit block, the outer wall of the screw rod is connected to the inner wall of the limit block by a thread, the micro servo motor is rotationally connected to the screw rod by a chain belt, and the mounting plate is lifted and lowered vertically on the outer wall of the guide rod.

[0010] As a further solution of the present invention: the interior of the support plate is in a truncated cone shape that is larger at the top and smaller at the bottom, the interior of the support plate is hollow, the interior of the support column is provided with a hollow channel that is connected to the interior of the support plate, and the exhaust end of the induced draft fan is connected to the interior of the support plate through a pipe.

[0011] As a further solution of the present invention: the left and right tight openings at the top of the bottom mold frame are provided with hidden grooves, the support columns pass through the hidden grooves so that the support plates above them are embedded in the hidden grooves, and the volume of the hidden grooves is consistent with the volume of the support plates.

[0012] As a further solution of the present invention: the inner outer opening of the support plate is provided with an upwardly inclined exhaust groove, the interior of the exhaust groove is connected to the interior of the support plate, and the exhaust groove is arranged in a circular ring around the middle of the support plate.

[0013] As a further solution of the present invention: the upper surface of the support plate and the bottom end of the lower mold are both on the same horizontal plane, the upper surface of the support plate is close to the bottom end of the lower mold core, and the cross-sectional area of ​​the outer retaining ring is larger than the cross-sectional area of ​​the bottom of the hidden groove.

[0014] As a further solution of the present invention: the inner wall of the lower mold is provided with a plurality of exhaust channels at equidistant vertical openings, adjacent exhaust channels are provided with conducting flow channels at transverse or longitudinal openings, and the top ends of the exhaust channels are all provided with exhaust ports.

[0015] 1. When the lower mold core needs to be replaced after the upper mold is taken out, the two micro servo motors simultaneously drive the screw to rotate in the limit block, so that the mounting plate moves upward along the guide rod between the guide rod and the screw. During the rising process of the mounting plate, the lower mold core is lifted up by the support column and the support plate, so that the lower mold core is quickly moved upward from the lower mold, and the replacement of the lower mold core is more convenient. If the temperature of the lower mold core is high when it is lifted up, the airflow generated by the induced draft fan is discharged from the exhaust groove at the bottom of the support plate along the pipeline and the support column and blows to the bottom of the lower mold core, which can quickly dissipate heat and cool the lower mold core. By replacing the support plates on different mounting plates to support the lower mold core, it is avoided that the two support plates are in contact with the lower mold core for a long time, resulting in a large heat dissipation and cooling dead angle at the bottom of the lower mold core, which further improves the efficiency of replacing the lower mold core and makes it easier for the staff to operate.

[0016] 2. Since the vertical opening on the inner wall of the lower mold is provided with multiple exhaust channels and adjacent exhaust channels are connected with guide channels, when the airflow is discharged from the exhaust groove at the bottom of the support plate along the pipeline and the support column and blows to the bottom of the lower mold core, the airflow will flow along the exhaust channel and the guide channel in the lower mold on the outer wall of the lower mold core due to the action of air pressure, and then flow from bottom to top to take away the heat, thereby reducing the dead corners of heat dissipation and cooling of the lower mold core, further improving the replacement speed of the lower mold core, and the replacement efficiency is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front schematic diagram of the overall structure of the present invention; Figure 2 It is a front cross-sectional schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the local structure of the lower mold and the lower mold core in the present invention; Figure 4 It is a schematic diagram of the local structure of the lower mold in the present invention; Figure 5 It is a front cross-sectional schematic diagram of the local structure of the connecting cylinder and the limiting column in the present invention; Figure 6 It is a schematic diagram of the explosion of the local structure of the mounting plate and the supporting column in the present invention; Figure 7 It is a schematic diagram of the bottom surface of the local structure of the support column in the present invention.

[0018] Legend: Bottom mold frame 1, lower mold core 101, lower mold 102, upper mold 103, upper mold core 104, injection tube 105, limiting column 106, connecting tube 107, guide tube 108, mounting plate 2, limiting block 201, support column 202, support plate 203, outer retaining ring 204, micro servo motor 205, screw 206, induced draft fan 208, guide rod 209. DETAILED DESCRIPTION

[0019] Example 1, please refer to Figure 1-7 A simple injection mold for quickly replacing mold cores comprises a bottom mold frame 1, a lower mold core 101, an upper mold 103, an upper mold core 104 and an injection tube 105. The lower mold core 101 is tightly attached to the middle of the upper surface of the bottom mold frame 1, the upper mold 103 is fixed to the top of the bottom mold frame 1 by a screw, the upper mold core 104 is fixed to the middle of the bottom end of the upper mold 103, the injection tube 105 is embedded in the left and right ends of the upper mold 103, the lower mold 102 is fixed to the middle of the upper surface of the bottom mold frame 1, a limiting column 106 is vertically fixed to the outer side of the bottom end of the upper mold 103, a connecting tube 107 is fixed to the outer side of the upper surface of the bottom mold frame 1, and an auxiliary mechanism is arranged at the lower part of the bottom mold frame 1.

[0020] The limiting columns 106 at the four corners of the bottom of the upper mold 103 are vertically embedded in the connecting tubes 107 at the four corners above the bottom mold frame 1, the outer wall of the limiting column 106 is close to the inner wall of the connecting tube 107, and the screw on the connecting tube 107 is horizontally embedded in the limiting hole inside the limiting column 106; When the limiting column 106 of the upper mold 103 is embedded in the connecting tube 107, the screw on the outside of the connecting tube 107 is screwed to be laterally embedded in the limiting column 106, so that the limiting column 106 and the connecting tube 107 are quickly locked and fixed together, so that the upper mold 103 can be closely attached to the top of the lower mold 102; The front, rear, left and right ends of the lower mold 102 are embedded with limiting screws, and the other ends of the limiting screws are embedded in the limiting holes at the front, rear, left and right ends of the lower mold core 101 to limit and fix the lower mold core 101 to prevent the lower mold core 101 from shaking in the lower mold 102 during the injection molding process; A guide cylinder 108 is embedded at the top of the connecting cylinder 107. A hollow guide groove shaped like a trumpet with a larger top and a smaller bottom is provided at the top of the guide cylinder 108. The cross-sectional area of ​​the hollow groove at the bottom of the guide cylinder 108 is consistent with the cross-sectional area of ​​the limiting column 106. The main function of the guide cylinder 108 is to guide the limiting column 106 , so that the limiting column 106 can quickly enter the connecting cylinder 107 under the guidance of the guide cylinder 108 when embedded in the guide cylinder 108 .

[0021] Example 2, please refer to Figure 1-7 , Embodiment 2 is different from Embodiment 1 in that the auxiliary mechanism is composed of a mounting plate 2, a limit block 201, a support column 202, a support plate 203, an outer retaining ring 204, a micro servo motor 205, a screw 206, an induced draft fan 208 and a guide rod 209; The left and right ends of the lower part of the bottom mold frame 1 are both laterally embedded with mounting plates 2, and the middle part of the outer side of the mounting plates 2 is laterally fixed with a limit block 201, the upper surfaces of the two mounting plates 2 are fixed with support columns 202, the tops of the support columns 202 are fixed with support plates 203, and the lower outer walls of the support columns 202 are fixed with outer retaining rings 204, the left and right ends of the bottom of the bottom mold frame 1 are fixed with micro servo motors 205, the left and right ends of the bottom of the bottom mold frame 1 are vertically rotatably connected with screw rods 206, the front and rear ends of the bottom of the bottom mold frame 1 are fixed with induced draft fans 208, and the left and right ends of the bottom of the bottom mold frame 1 are vertically fixed with guide rods 209; The screw rod 206 is vertically embedded in the inner wall of the limit block 201, the outer wall of the screw rod 206 is connected to the inner wall of the limit block 201 by a thread, the micro servo motor 205 is rotatably connected to the screw rod 206 by a chain belt, and the mounting plate 2 is lifted up and down in the vertical direction on the outer wall of the guide rod 209; When the lower mold core 101 needs to be replaced after the upper mold 103 is taken out, the two micro servo motors 205 simultaneously drive the screw rod 206 to rotate in the limit block 201, so that the mounting plate 2 moves upward along the guide rod 209 between the guide rod 209 and the screw rod 206. During the rising process of the mounting plate 2, the lower mold core 101 is lifted up by the support column 202 and the support plate 203, so that the lower mold core 101 is quickly moved upward from the lower mold 102, and the replacement of the lower mold core 101 is more convenient; The interior of the support plate 203 is in a truncated cone shape with a larger top and a smaller bottom. The interior of the support plate 203 is hollow. The interior of the support column 202 is provided with a hollow passage that is in communication with the interior of the support plate 203. The exhaust end of the induced draft fan 208 is in communication with the interior of the support plate 203 through a pipeline. If the temperature of the lower mold core 101 is high when it is lifted up by the support plate 203, the airflow generated by the induced draft fan 208 is discharged from the exhaust slot at the bottom of the support plate 203 along the pipeline and the support column 202 and blown to the bottom of the lower mold core 101, so that the lower mold core 101 can be quickly cooled down, avoiding the need to leave it for a long time to cool down before replacing it due to the high temperature of the lower mold core 101, and the replacement efficiency is high; Hidden grooves are provided at the left and right end openings of the top of the bottom mold frame 1, and the support column 202 passes through the hidden grooves so that the support plate 203 above it is embedded in the hidden grooves, and the volume of the hidden grooves is consistent with the volume of the support plate 203; The inner and outer openings of the support plate 203 are provided with an upwardly inclined exhaust groove, the interior of the exhaust groove is connected to the interior of the support plate 203, and the exhaust groove is arranged in a circular ring around the middle of the support plate 203; When the support plate 203 on one mounting plate 2 lifts up the lower mold core 101, the support plate 203 on the other mounting plate 2 partially rises and does not contact the lower mold core 101. Then, the airflow generated by the induced draft fan 208 is discharged from the exhaust slot at the bottom of the support plate 203 along the pipeline and the support column 202 and blows to the bottom of the lower mold core 101 to dissipate heat for the lower mold core 101. Subsequently, the support plate 203 in contact with the lower mold core 101 moves down, and the support plate 203 not in contact with the lower mold core 101 moves up to lift up the lower mold core 101. By replacing the support plates 203 on different mounting plates 2 to support the lower mold core 101, it is avoided that the two support plates 203 are in contact with the lower mold core 101 for a long time, causing a large heat dissipation and cooling dead angle at the bottom of the lower mold core 101, further improving the efficiency of replacing the lower mold core 101, and making it easier for the staff to operate. The upper surface of the support plate 203 and the bottom end of the lower mold 102 are both on the same horizontal plane, the upper surface of the support plate 203 is close to the bottom end of the lower mold core 101, and the cross-sectional area of ​​the outer retaining ring 204 is larger than the cross-sectional area of ​​the bottom of the hidden groove; The main function of the outer retaining ring 204 is to prevent the pipeline connecting the induced draft fan 208 and the support column 202 from contacting the bottom of the hidden groove and causing damage to the pipeline when the support column 202 rises to a higher position.

[0022] Example 3, please refer to Figure 1-7 , Embodiment 3 is different from Embodiment 2 in that a plurality of exhaust channels are provided at equidistant vertical openings on the inner wall of the lower mold 102, adjacent exhaust channels are provided with conducting flow channels at transverse or longitudinal openings, and exhaust ports are provided at the top ends of the exhaust channels; When the upper mold 103 needs to be replaced with the lower mold core 101 after being taken out, the airflow generated by the induced draft fan 208 is discharged from the exhaust groove at the bottom of the support plate 203 along the pipeline and the support column 202 and blown to the bottom of the lower mold core 101. Due to the action of air pressure, the airflow will flow along the exhaust channel and the guide channel in the lower mold 102 on the outer wall of the lower mold core 101, and then flow from bottom to top to be discharged and take away the heat, thereby reducing the dead corners of heat dissipation and cooling of the lower mold core, further improving the replacement speed of the lower mold core 101, and the replacement efficiency is relatively high.

[0023] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A simple injection mold for quickly replacing mold cores, comprising a bottom mold frame (1), a lower mold core (101), an upper mold (103), an upper mold core (104) and an injection tube (105), wherein the lower mold core (101) is tightly attached to the middle of the upper surface of the bottom mold frame (1), the upper mold (103) is fixed to the top of the bottom mold frame (1) by a screw, the upper mold core (104) is fixed to the middle of the bottom end of the upper mold (103), and the injection tube (105) is embedded in the left and right ends of the upper mold (103), characterized in that: A lower mould (102) is fixed to the middle of the upper surface of the bottom mould frame (1), a limiting column (106) is vertically fixed to the outer side of the bottom end of the upper mould (103), a connecting cylinder (107) is fixed to the outer side of the upper surface of the bottom mould frame (1), and an auxiliary mechanism is arranged at the lower part of the bottom mould frame (1).

2. The simple injection mold for quickly changing mold core according to claim 1, characterized in that: The limiting columns (106) at the four corners of the bottom of the upper mold (103) are vertically embedded in the connecting tubes (107) at the four corners above the bottom mold frame (1), the outer walls of the limiting columns (106) are tightly attached to the inner walls of the connecting tubes (107), and the screws on the connecting tubes (107) are horizontally embedded in the limiting holes inside the limiting columns (106).

3. The simple injection mold for quickly changing mold core according to claim 1, characterized in that: A guide cylinder (108) is embedded at the top of the connecting cylinder (107), and a hollow guide groove in the shape of a "horn" with a larger top and a smaller bottom is provided at the top of the guide cylinder (108). The cross-sectional area of ​​the hollow groove at the bottom of the guide cylinder (108) is the same as the cross-sectional area of ​​the limiting column (106).

4. The simple injection mold for quickly changing mold core according to claim 1, characterized in that: The auxiliary mechanism is composed of a mounting plate (2), a limit block (201), a support column (202), a support plate (203), an outer retaining ring (204), a micro servo motor (205), a screw rod (206), an induced draft fan (208), and a guide rod (209); Mounting plates (2) are transversely embedded at the left and right ends of the lower interior of the bottom mold frame (1), a limit block (201) is transversely fixed to the middle of the outer side of the mounting plate (2), a support column (202) is fixed to the upper surface of the two mounting plates (2), a support plate (203) is fixed to the top of the support column (202), an outer retaining ring (204) is fixed to the lower outer wall of the support column (202), a micro servo motor (205) is fixed to the left and right ends of the bottom of the bottom mold frame (1), a screw rod (206) is vertically rotatably connected to the left and right ends of the bottom of the bottom mold frame (1), an induced draft fan (208) is fixed to the front and rear ends of the bottom of the bottom mold frame (1), and a guide rod (209) is vertically fixed to the left and right ends of the bottom of the bottom mold frame (1).

5. The simple injection mold for quickly changing mold core according to claim 4, characterized in that: The screw rod (206) is vertically embedded in the interior of the limit block (201); the outer wall of the screw rod (206) is connected to the inner wall of the limit block (201) via a thread; the micro servo motor (205) is rotationally connected to the screw rod (206) via a chain belt; and the mounting plate (2) is lifted up and down in a vertical direction on the outer wall of the guide rod (209).

6. The simple injection mold for quickly changing mold core according to claim 4, characterized in that: The interior of the support plate (203) is arranged in a truncated cone shape with a larger top and a smaller bottom; the interior of the support plate (203) is hollow; a hollow passage communicating with the interior of the support plate (203) is arranged inside the support column (202); and an exhaust end of the induced draft fan (208) is communicated with the interior of the support plate (203) via a pipeline.

7. The simple injection mold for quickly changing mold core according to claim 4, characterized in that: Hidden grooves are provided at the left and right end openings of the top of the bottom mold frame (1), and the support column (202) passes through the hidden grooves so that the support plate (203) above it is embedded in the hidden grooves, and the volume of the hidden grooves is consistent with the volume of the support plate (203).

8. The simple injection mold for quickly changing mold core according to claim 4 or 6, characterized in that: An upwardly inclined exhaust groove is provided at the inner outer opening of the support plate (203); the interior of the exhaust groove is communicated with the interior of the support plate (203); and the exhaust groove is arranged in a circular ring shape around the middle of the support plate (203).

9. The simple injection mold for quickly changing mold core according to claim 4 or 7, characterized in that: The upper surface of the support plate (203) and the bottom end of the lower mold (102) are both located on the same horizontal plane, the upper surface of the support plate (203) is in close contact with the bottom end of the lower mold core (101), and the cross-sectional area of ​​the outer retaining ring (204) is greater than the cross-sectional area of ​​the bottom of the hidden groove.

10. The simple injection mold for quickly changing mold core according to claim 1, characterized in that: The inner wall of the lower mold (102) is provided with a plurality of exhaust channels at equidistant vertical openings, and mutually communicating guide channels are provided at the transverse or longitudinal openings between adjacent exhaust channels, and exhaust ports are provided at the top ends of the exhaust channels.

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