High-precision gear mold

Abstract

The utility model relates to the technical field of gear molds, in particular to a high-precision gear mold which comprises a bottom plate and first supporting columns, the two sides of the upper end of the bottom plate are fixedly connected with the first supporting columns, the upper ends of the two first supporting columns are fixedly connected with a top plate, and the two sides of the lower end of the top plate are fixedly connected with first electric push rods. An injection molding structure is arranged below the first electric push rod, an ejection structure is arranged above the bottom plate, and a plurality of second supporting columns are fixedly connected to the upper end of the bottom plate. Through cooperation of the ejection structure and workers, the lower mold and the injection-molded gear are ejected out together, it is avoided that the gear is directly ejected out through an ejector pin, raw materials are prevented from flowing out of the ejector pin, and resources are saved. Through cooperation of the injection molding structure and the mold, uneven filling caused by difference of flowing paths is avoided, air in the mold is exhausted from the upper ventilation hole, raw materials can flow evenly, and the gear production precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear mould technical field, concretely is a kind of high-precision gear mould. BACKGROUND

[0002] Gear injection mould is a kind of precision mould specially used for producing plastic gear, and its design and manufacture need to consider the precision of gear, material properties and injection molding process requirements.

[0003] For example, a gear mould with announcement number "CN117021503A", by first ejection mechanism, the excess part in the middle of gear is ejected and cut, so that the hole in the middle of gear is communicated, and then the gear is ejected by second ejection mechanism, so as to demould, reduce manual labor and save labor cost. However, after the gear is injection molded, the injection molded mould is directly ejected by the second ejection structure, the thimble and the lower mould are slidingly connected, so there is a certain gap between the thimble and the lower mould, and during injection molding, the raw material will flow out from the thimble, and during injection molding, the raw material is injection molded from the center of the mould to the inside of the mould, and it is necessary to rely on the flowability of the raw material to fill the mould, which can easily cause uneven flow of raw material during injection molding, affecting injection molding precision. SUMMARY

[0004] The utility model aims at solving the problem that there is a certain gap between the thimble and the lower mould, and the raw material will flow out from the thimble during injection molding, and the problem that uneven flow of raw material during injection molding can affect injection molding precision, and provides a kind of high-precision gear mould.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of high-precision gear mould is designed, including bottom plate and first support, the upper end both sides of bottom plate are fixedly connected with first support, the upper end of two first supports is fixedly connected with top plate, the lower end both sides of top plate are fixedly connected with first electric push rod, the lower of first electric push rod is equipped with injection structure, the upper of bottom plate is equipped with ejection structure, the upper end of bottom plate is fixedly connected with a plurality of second supports.

[0007] Preferably, the ejection structure includes a second electric push rod, the lower end of the second electric push rod is fixedly connected with the bottom plate, the output end of the second electric push rod is fixedly connected with a circular plate, the upper end of the circular plate is fixedly connected with two top rods, the outer wall of the top rod is slidingly connected with a sliding bearing, and the outer wall of the sliding bearing is fixedly connected with a mounting groove.

[0008] Preferably, the injection molding structure comprises an upper mold, the upper end of the upper mold is fixedly connected with the output end of the first electric push rod on both sides, the upper end of the upper mold is fixedly communicated with the feeding port, the lower end of the feeding port is fixedly communicated with the distribution pipe, the end of the distribution pipe is fixedly communicated with a plurality of injection ports, the lower end of the injection port is fixedly communicated with the upper mold, and the upper end of the upper mold is fixedly communicated with the gas outlet on the right side.

[0009] Preferably, the upper end of each of the plurality of second struts is fixedly connected with the mounting groove.

[0010] Preferably, the upper end of each of the plurality of second struts is fixedly connected with the mounting groove.

[0011] Preferably, the mounting groove is internally placed with a lower mold.

[0012] Preferably, the two ends of the mounting groove are threadedly connected with bolts, and the ends of the two bolts are abuttingly tight with the lower mold.

[0013] The high-precision gear mold has the beneficial effects that: through the cooperation of the ejection structure and the worker, the output end of the second electric push rod is controlled to move upward to drive the circular plate to move upward, the circular plate moves upward to drive the ejector rod to move upward, the lower mold and the injection-molded gear are ejected together, then the worker can take away the lower mold and the gear together, the output end of the second electric push rod is controlled to shorten to drive the ejector rod to return to the initial position, the worker places a new lower mold in the mounting groove, rotates the bolts on both sides, and makes the bolts abuttingly tight with the lower mold, so that the next injection molding work can be performed, the gear is avoided from being directly ejected by the ejector pin, the raw material is avoided from flowing out from the ejector pin, and resources are saved.

[0014] Through the cooperation of the injection molding structure and the mold, the feeding port is communicated with the raw material production device outside, the raw material is conveyed into the feeding port, then the raw material is distributed through the distribution pipe, and finally the raw material is uniformly discharged from the plurality of injection ports, the plurality of injection ports can realize multi-point balanced glue feeding at the same time, filling unevenness caused by flow path difference is avoided, the air in the mold is discharged from the upper air inlet hole, the raw material flow is uniform, and the gear production precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a front view of Figure 1

[0017] Figure 3 It is a sectional view of Figure 2

[0018] Figure 4 It is a sectional view of Figure 3 ​​Fig. 1 is a schematic view of the middle A part;

[0019] Figure 5 Fig. 1 is a schematic view of the middle A part; Figure 3 Fig. 1 is a schematic view of the middle A part;

[0020] Figure 6 Fig. 1 is a schematic view of the middle A part; Figure 3 Fig. 1 is a schematic view of the middle A part.

[0021] Fig. 1 is a schematic view of the middle A part. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings:

[0023] Referring to the accompanying Figures 1-6 :

[0024] In the embodiment, a high-precision gear mold includes a bottom plate 1 and a first support 3, the upper ends of the bottom plate 1 are fixedly connected with the first support 3 on both sides, the upper ends of the two first supports 3 are fixedly connected with a top plate 4, the lower end of the top plate 4 is fixedly connected with a first electric push rod 5 on both sides, the model of the first electric push rod 5 is selected, according to actual work requirements, work needs can be met, a first electric push rod 5 is arranged below the injection molding structure 6, the output end of the first electric push rod 5 can drive the injection molding structure 6 to move, a top-out structure 2 is arranged above the bottom plate 1, a plurality of second supports 7 are fixedly connected with the upper end of the bottom plate 1, the upper ends of the plurality of second supports 7 are fixedly connected with a mounting groove 8, the mounting groove 8 is fixedly connected with a clamping block 9 on both sides of the upper end, a lower mold 11 is placed in the mounting groove 8, both ends of the mounting groove 8 are threadedly connected with a bolt 10, and the end portions of the two bolts 10 are in abutment with the lower mold 11.

[0025] Referring to the accompanying Figures 1-3 and 5:

[0026] The ejection structure 2 comprises a second electric push rod 201, the model of the second electric push rod 201 is selected according to the actual work requirement, and the work requirement is met. The lower end of the second electric push rod 201 is fixedly connected with the bottom plate 1. The output end of the second electric push rod 201 is fixedly connected with a circular plate 202. The output end of the second electric push rod 202 can drive the circular plate 202 to move. The upper end of the circular plate 202 is fixedly connected with two ejector rods 203. The outer wall of the ejector rod 203 is in sliding connection with a sliding bearing 204. The outer wall of the sliding bearing 204 is fixedly connected with the mounting groove 8. The movement of the circular plate 202 can drive the two ejector rods 203 to move.

[0027] Referring to the accompanying drawings Figures 1-3 and 6:

[0028] The injection molding structure 6 comprises an upper mold 601. The upper end of the upper mold 601 is fixedly connected with the output end of the first electric push rod 5 on both sides. The upper end of the upper mold 601 is fixedly communicated with a feeding port 602 in the middle. The feeding port 602 is communicated with the external raw material production device. The lower end of the feeding port 602 is fixedly communicated with a distribution pipe 603. The end of the distribution pipe 603 is fixedly communicated with a plurality of injection ports 604. The raw material can be uniformly discharged from the plurality of injection ports 604 after passing through the feeding port 602 and the distribution pipe 603. The lower end of the injection port 604 is fixedly communicated with the upper mold 601. The upper end of the upper mold 601 is fixedly communicated with an air outlet 605 on the right side.

[0029] Working principle:

[0030] The two first electric push rods 5 are connected to the same plc controller. Through programming and other operations, the simultaneous start of the two first electric push rods 5 is controlled, so that the output ends of the two second electric push rods 5 move downward at the same time. The output end of the first electric push rod 5 drives the upper mold 601 to move downward, so that the groove at the lower end of the upper mold 601 is aligned with the clamping block 9. The clamping block 9 is inserted into the groove at the lower end of the upper mold 601, and the upper mold 601 and the lower mold 11 are tightly closed. The first electric push rod 5 is closed.

[0031] Injection work:

[0032] The feeding port 602 is communicated with the external raw material production device. The raw material is conveyed into the inside of the feeding port 602, and then the raw material is distributed through the distribution pipe 603 and finally uniformly discharged from the plurality of injection ports 604. Since the plurality of injection ports 604 are arranged, multi-point balanced glue feeding can be realized at the same time, so as to avoid uneven filling caused by flow path difference. The air in the mold is discharged from the air outlet 605.

[0033] Discharging work:

[0034] When the gear is injection molded, after the gear is cooled, the output end of the two first electric push rods 5 is shortened to drive the upper mold 601 to move upwards, the upper mold 601 is moved to the initial position, then the staff rotates the bolts 10 on both sides, so that the bolts 10 are no longer tightly contacted with the lower mold 11, then the second electric push rod 201 is started, the output end of the second electric push rod 201 is controlled to move upwards to drive the circular plate 202 to move upwards, the circular plate 202 moves upwards to drive the ejector pin 203 to move upwards, the lower mold 11 and the injection molded gear are ejected together, then the staff can take away the lower mold and the gear together, the output end of the second electric push rod 201 is shortened to drive the ejector pin 203 to return to the initial position, the staff places a new lower mold into the mounting groove 8, rotates the bolts 10 on both sides again, so that the bolts 10 are tightly contacted with the lower mold 11, and the next injection work can be carried out.

[0035] When the injection work is carried out, the staff can demold the taken-out lower mold 11 and the gear, and the next work will not be delayed.

[0036] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A high-precision gear mold, comprising a base plate (1) and a first support column (3), wherein both sides of the upper end of the base plate (1) are fixedly connected to the first support column (3), characterized in that: The upper ends of the two first pillars (3) are fixedly connected to the top plate (4). The lower ends of the top plate (4) are fixedly connected to the two sides of the top plate (4). The first electric push rod (5) is provided with an injection molding structure (6) below the first electric push rod (5). The bottom plate (1) is provided with an ejection structure (2) above the bottom plate (1). The upper end of the bottom plate (1) is fixedly connected to multiple second pillars (7).

2. The high-precision gear mold according to claim 1, characterized in that: The ejection structure (2) includes a second electric push rod (201), the lower end of which is fixedly connected to the base plate (1), and the output end of which is fixedly connected to a circular plate (202). The upper end of the circular plate (202) is fixedly connected to two push rods (203), the outer wall of which is slidably connected to a sliding bearing (204), and the outer wall of which is fixedly connected to the mounting groove (8).

3. The high-precision gear mold according to claim 1, characterized in that: The injection molding structure (6) includes an upper mold (601). The upper two sides of the upper mold (601) are fixedly connected to the output ends of the first electric push rod (5). The upper middle part of the upper mold (601) is fixedly connected to the feed port (602). The lower end of the feed port (602) is fixedly connected to the distribution pipe (603). The end of the distribution pipe (603) is fixedly connected to multiple injection ports (604). The lower end of the injection port (604) is fixedly connected to the upper mold (601). The upper right side of the upper mold (601) is fixedly connected to the air outlet (605).

4. The high-precision gear mold according to claim 1, characterized in that: The upper ends of multiple second pillars (7) are fixedly connected to the mounting groove (8).

5. The high-precision gear mold according to claim 4, characterized in that: Both sides of the upper end of the mounting groove (8) are fixedly connected with a locking block (9).

6. The high-precision gear mold according to claim 4, characterized in that: The lower mold (11) is placed inside the mounting slot (8).

7. The high-precision gear mold according to claim 6, characterized in that: Both ends of the mounting groove (8) are threadedly connected to bolts (10), and the ends of the two bolts (10) are pressed against the lower mold (11).

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