Quick replacement mechanism for small insert of plastic mold

Abstract

The utility model discloses a quick replacement mechanism for a small insert of a plastic mold, and relates to the technical field of plastic molds. The mold comprises an injection molding base, an injection molding mold is installed on the injection molding base, an installation groove is formed in the injection molding mold, an insert is movably arranged in the installation groove, through grooves which are communicated are formed between the injection molding mold and the injection molding base, a positioning groove and an ejection groove are formed in one side of the injection molding base, and a positioning rod is arranged in the through groove. A mounting seat is mounted at the end, close to the insert, of the positioning rod, the insert is mounted on the mounting seat, a positioning hole is formed in the positioning rod, an insertion rod is mounted in the positioning groove, one end of the insertion rod can be inserted into the positioning hole, and the mounting portion of the insertion rod can be replaced from the positioning groove to an ejection groove. According to the utility model, the insert replacement time is greatly shortened, the disassembly and assembly working hours are saved, the working efficiency of production operation is remarkably improved, and a powerful guarantee is provided for quick mold replacement and continuous and efficient operation of injection molding production.

Description

Technical Field

[0001] This utility model belongs to the field of plastic mold technology, and more specifically, it relates to a quick-change mechanism for small inserts in plastic molds. Background Technology

[0002] Injection molds are specialized tools used in the plastic injection molding process. They are used to inject molten plastic into a mold cavity, which then cools and solidifies to obtain the finished product. They are widely used in the production of plastic parts and products, and are particularly suitable for mass production of products with complex geometries and high precision requirements, such as automotive parts, electronic casings, home appliances, and toys.

[0003] In the existing technology, in order to optimize mold costs, home appliance companies usually use a mold insert replacement scheme for plastic parts with a consistent overall shape and only local differences. By replacing different inserts on the mold, different plastic new product structures can be injection molded, so that one mold can produce multiple different products. Currently, replacing inserts usually requires removing the mold from the injection molding machine, then replacing the inserts, and finally hoisting it back onto the machine and heating it.

[0004] There are still significant limitations in the current insert replacement process. Replacing the insert still requires disassembling the mold, which takes a long time and results in a huge waste of time and low work efficiency in manufacturing.

[0005] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model is a quick-change mechanism for small inserts in plastic molds, including an injection base, an injection mold mounted on the injection base, an installation groove on the injection mold, an insert movably disposed in the installation groove, a through groove connecting the injection mold and the injection base, the through groove communicating with the inner cavity of the installation groove, a positioning groove and an ejection groove on one side of the injection base, the positioning groove and the ejection groove being perpendicular to the thickness direction of the injection base, and both the positioning groove and the ejection groove communicating with the inner cavity of the through groove, a positioning rod disposed in the through groove, an installation seat disposed at the end of the positioning rod near the insert, the insert being disposed on the installation seat, a positioning hole on the positioning rod, an insert rod disposed in the positioning groove, one end of the insert rod being able to be inserted into the positioning hole, at which time the insert rod can lock the position of the positioning rod, the end of the insert rod inserted into the positioning hole is frustum-shaped, the end of the positioning rod is provided with an inclination angle, the mounting part of the insert rod can be changed from the positioning groove to the ejection groove, the frustum-shaped end of the insert rod is adapted to the inclination angle end of the positioning rod.

[0007] The inner wall of the through groove is provided with a placement groove, which is axially opposite to the ejection groove, and the frustum-shaped end of the insertion rod can be completely inserted into the placement groove.

[0008] One end of the insertion rod is fitted with a threaded rod, which can be threaded into the opening of the positioning groove.

[0009] The mounting base and the insert are connected by screws.

[0010] A groove is coaxially opened at one end of the threaded rod.

[0011] The injection base has a "lock" symbol and a "take" symbol on one side. The "lock" symbol corresponds to the positioning groove, and the "take" symbol corresponds to the ejection groove.

[0012] This utility model has the following beneficial effects:

[0013] This invention securely fixes the insert by engaging the insertion rod with the positioning groove and positioning hole while the insert is locked. When replacement is needed, simply remove the insertion rod from the positioning groove, release the positioning rod lock, and then insert the insertion rod into the ejection groove. The contact between the frustum end of the insertion rod and the inclined surface of the positioning rod causes the positioning rod to slide, thereby allowing the mounting seat to disengage the insert from the mounting groove. This eliminates the need to disassemble the entire injection mold structure. The entire replacement process is simple, requiring no complex tools or significant manpower, greatly shortening the insert replacement time. It saves disassembly and installation time, reduces the labor intensity of operators, and significantly improves production efficiency, providing a strong guarantee for rapid mold changeover and continuous high-efficiency operation in injection molding production.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0017] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is the second three-dimensional cross-sectional structural schematic diagram of the present invention;

[0019] Figure 5 This is a schematic diagram of the positioning rod structure of this utility model;

[0020] Figure 6 For the present utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Injection base; 2. Injection mold; 3. Mounting groove; 4. Insert; 5. Through groove; 6. Positioning groove; 7. Ejection groove; 8. Positioning rod; 9. Mounting seat; 10. Positioning hole; 11. Insert rod; 12. Placement groove; 13. Threaded rod; 14. Slot. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-6 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] Please see Figures 1-5 As shown:

[0024] This embodiment provides a quick-change mechanism for a small plastic mold insert 4, including an injection base 1, an injection mold 2 mounted on the injection base 1, an installation groove 3 on the injection mold 2, an insert 4 movably disposed within the installation groove 3, a through groove 5 connecting the injection mold 2 and the injection base 1, the through groove 5 communicating with the inner cavity of the installation groove 3, a positioning groove 6 and an ejection groove 7 on one side of the injection base 1, the positioning groove 6 and the ejection groove 7 being perpendicularly arranged along the thickness direction of the injection base 1, and both the positioning groove 6 and the ejection groove 7 communicating with the inner cavity of the through groove 5, a positioning rod 8 disposed within the through groove 5, and an installation seat mounted on the end of the positioning rod 8 near the insert 4. 9. The insert 4 is installed on the mounting base 9. The positioning rod 8 has a positioning hole 10. The positioning groove 6 is equipped with an insert rod 11. One end of the insert rod 11 can be inserted into the positioning hole 10. At this time, the insert rod 11 can lock the position of the positioning rod 8. The end of the insert rod 11 inserted into the positioning hole 10 is truncated cone-shaped. One end of the positioning rod 8 is set with an inclination angle. The installation part of the insert rod 11 can be changed from the positioning groove 6 to the ejection groove 7. The truncated cone-shaped end of the insert rod 11 is matched with the inclination angle end of the positioning rod 8. Thus, during the installation of the insert rod 11 in the ejection groove 7, it can drive the positioning rod 8 to slide, so as to simultaneously drive the mounting base 9 and the insert 4 to disengage from the mounting groove 3.

[0025] With the insert 4 locked, the insert rod 11 is inside the positioning groove 6, with its frustum-shaped end inserted into the positioning hole 10 on the positioning rod 8, thus locking the positioning rod 8. The insert 4 is fixed in the mounting groove 3 by the mounting base 9. When the insert 4 needs to be replaced, the insert rod 11 is removed from the positioning groove 6, releasing the locking state of the positioning rod 8 and allowing it to move. Then, the frustum-shaped end of the insert rod 11 is aligned with the ejector groove 7, and the insert rod 11 is slid into the ejector groove 7. As the insert rod 11 gradually slides in, its frustum-shaped end will contact the inclined surface of the positioning rod 8. Thus, as the frustum-shaped end gradually slides in, it will be propelled by the inclined surface. The movable positioning rod 8 slides in the through groove 5 toward the mounting groove 3. The sliding of the positioning rod 8 causes the mounting base 9 to slide simultaneously with the insert 4, so that the insert 4 is disengaged from the mounting groove 3. At this time, the support personnel can easily remove the insert 4 and the positioning rod 8 to replace the different insert 4 onto the mounting base 9. Then, the positioning rod 8 is reinserted into the through groove 5, and the insertion rod 11 is reinserted into the positioning groove 6, so that the frustum-shaped end of the insertion rod 11 is reinserted into the positioning hole 10 to fix the position of the positioning rod 8, thereby completing the replacement of the insert 4. This can shorten the replacement time of the insert 4, eliminate the need to disassemble the entire injection mold 2, save time and effort, and improve work efficiency.

[0026] like Figure 2 , Figure 4 , Figure 5 As shown, a placement groove 12 is provided on the inner wall of the through groove 5. The placement groove 12 is axially opposite to the ejection groove 7. The frustum-shaped end of the insertion rod 11 can be completely inserted into the placement groove 12. As the frustum-shaped end of the insertion rod 11 is gradually slid in, after the frustum has been slid into the mounting groove 3 by the inclined surface of the positioning rod 8, the frustum-shaped end of the positioning rod 8 will be inserted into the placement groove 12, so that the outer circumferential surface of the insertion rod 11 contacts the inclined end of the positioning rod 8, thereby maximizing the sliding distance of the positioning rod 8 and making the insert 4 further away from the mounting groove 3, making it easier for the operator to pick it up.

[0027] like Figure 4 , Figure 5 As shown, a threaded rod 13 is installed at one end of the insertion rod 11. The threaded rod 13 can be threadedly connected to the opening of the positioning groove 6. By installing the threaded rod 13 at one end of the insertion rod 11, the insertion rod 11 can be fixed by the threaded rod 13 after it is inserted into the positioning groove 6, preventing it from loosening. This allows the insertion rod 11 to be stably locked onto the positioning rod 8.

[0028] like Figure 5As shown, the mounting base 9 and the insert 4 are connected by screws. The insert 4 is mounted on the mounting base 9 by screws, so that when the insert 4 is replaced, the insert 4 can be separated from the mounting base 9 by removing the screws. At the same time, different inserts 4 can also be replaced on the mounting base 9 by screws.

[0029] like Figure 4-6 As shown, a slot 14 is coaxially provided at one end of the threaded rod 13. The slot 14 allows the operator to use an external tool to rotate the threaded rod 13 and the insert rod 11 and remove them from the positioning slot 6.

[0030] like Figure 3 , Figure 4 , Figure 6 As shown, the injection base 1 has a "lock" mark and a "take" mark on one side. The "lock" mark corresponds to the positioning groove 6, and the "take" mark corresponds to the ejection groove 7. The "lock" mark and the "take" mark can make the operator more aware of the position of the positioning groove 6 and the ejection groove 7, and avoid accidentally inserting the insertion rod 11.

[0031] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A mechanism for quick replacement of small inserts (4) of plastic molds, comprising an injection base (1), characterized in that, An injection mold (2) is installed on the injection base (1). The injection mold (2) has an installation groove (3). An insert (4) is movably arranged in the installation groove (3). A through groove (5) is provided between the injection mold (2) and the injection base (1). The through groove (5) communicates with the inner cavity of the installation groove (3). A positioning groove (6) and an ejection groove (7) are provided on one side of the injection base (1). The positioning groove (6) and the ejection groove (7) are arranged perpendicularly to the thickness direction of the injection base (1). The positioning groove (6) and the ejection groove (7) communicate with the inner cavity of the through groove (5). A positioning rod (8) is provided in the through groove (5). A mounting base (9) is installed near the end of the insert (4). The insert (4) is mounted on the mounting base (9). A positioning hole (10) is provided on the positioning rod (8). An insert rod (11) is installed in the positioning groove (6). One end of the insert rod (11) can be inserted into the positioning hole (10). At this time, the insert rod (11) can lock the position of the positioning rod (8). The end of the insert rod (11) inserted into the positioning hole (10) is truncated cone-shaped. One end of the positioning rod (8) is provided with an inclination angle. The installation part of the insert rod (11) can be changed from the positioning groove (6) to the ejector groove (7). The truncated cone-shaped end of the insert rod (11) is adapted to the inclination angle end of the positioning rod (8).

2. The quick change mechanism for plastic mold inserts (4) according to claim 1, characterized in that, The inner wall of the through groove (5) is provided with a placement groove (12), the placement groove (12) is axially opposite to the ejection groove (7), and one end of the frustum-shaped insertion rod (11) can be completely inserted into the placement groove (12).

3. The quick change mechanism for plastic mold inserts (4) according to claim 2, characterized in that, One end of the insertion rod (11) is equipped with a threaded rod (13), which can be threadedly connected to the opening of the positioning groove (6).

4. The quick change mechanism for plastic mold inserts (4) according to claim 3, characterized in that, The mounting base (9) and the insert (4) are connected by screws.

5. The quick change mechanism for plastic mold inserts (4) according to claim 4, characterized in that, The threaded rod (13) has a groove (14) coaxially formed at one end.

6. The quick-change mechanism for the small insert (4) of the plastic mold according to claim 5, characterized in that, The injection base (1) has a "lock" mark and a "take" mark on one side. The "lock" mark corresponds to the positioning groove (6), and the "take" mark corresponds to the ejection groove (7).

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