Injection mold with limiting structure

Abstract

The utility model provides an injection mold with a limiting structure, and relates to the technical field of injection molds, the injection mold comprises an upper mold, a lower mold and a plurality of limiting pieces for limiting the upper mold and the lower mold, when the upper mold and the lower mold are disassembled, a knob block and a limiting rod are pressed inwards, one side of the limiting rod applies pressure to a spring to enable the spring to contract, and the limiting piece is pressed; the limiting block on the side wall of the mounting hole slides out of the clamping groove formed in the limiting rod, at the moment, the knob block is rotated to drive the limiting rod to rotate by a certain angle, the knob block is loosened, the spring exerts thrust on the limiting rod, the through groove in the limiting rod passes through the limiting block, and at the moment, one end of the limiting rod slides out of the limiting hole of the upper mold. And the limiting rods can be pulled out of the mounting holes without limiting the upper mold, the structure is easy to operate, compared with a traditional mode that disassembly is conducted through bolts, the upper mold and the lower mold can be rapidly disassembled, and the working efficiency is improved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with a limiting structure. Background Art

[0002] An injection mold is a specialized tool used in the plastic injection molding process. It allows plastic to be heated and melted in a controlled environment and then injected into the mold cavity, where it cools and solidifies to form the desired plastic product. The design and manufacture of injection molds have an important impact on the quality, cost and production efficiency of the final product. Injection molds are widely used, covering the production of almost all plastic products, including daily necessities, electronic equipment, auto parts, medical equipment, etc.

[0003] An injection mold usually consists of key components such as an upper mold, a lower mold, an injection port and a molding cavity. The injection port is the channel connecting the injection molding machine and the mold. The molten plastic is injected into the molding cavity through the injection port. The molding cavity determines the shape and size of the final plastic product. During injection molding, the upper mold and the lower mold are generally fixedly connected by bolts to ensure that the upper and lower molds can be firmly closed during high-pressure injection molding, to ensure that the plastic melt is evenly filled in the mold cavity, and to maintain the shape unchanged during the cooling and solidification process. After the mold is fully cooled and solidified after injection molding, the operator needs to remove the bolts of the upper mold and the lower mold, and then manually rotate or pull the ejector pin or ejector mechanism on the mold to eject the mold after molding. This structure requires the mold to be opened for injection molding or to take out the finished product every time it is used, and the bolts need to be disassembled and reassembled. This process is cumbersome and takes a long time, reducing production efficiency.

[0004] Therefore, it is necessary to provide a new injection mold with a limiting structure to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an injection mold with a limiting structure.

[0006] The injection mold with a limiting structure provided by the utility model comprises: an upper mold, a lower mold and a plurality of limiting parts for limiting the upper mold and the lower mold;

[0007] The limit member includes a mounting block, two springs and two limit rods, the bottom side of the mounting block is provided with two bolt holes for fixing it to the lower mold, the upper side of the mounting block is provided with two mounting holes, the two limit rods are respectively inserted into the two mounting holes, one end of the limit rod matches the limit hole opened on the upper mold, the inner walls of the two mounting holes are fixedly connected to one end of the spring, the other end of the spring abuts against the side wall of the limit rod and applies thrust to it, a knob block is provided on the side of the limit rod away from the spring, and two limit blocks are relatively arranged on the side walls of the two mounting holes, the two limit blocks are respectively fitted with two slots relatively opened on one side of the limit rod, and the limit rod is also provided with one or more through slots, and the two limit blocks can move in one group of through slots.

[0008] Preferably, the two limit blocks are symmetrically arranged relative to the central axis of the mounting hole.

[0009] Preferably, one group of through grooves includes two through grooves, and the two through grooves are symmetrically opened on one side of the limiting rod with respect to the central axis of the limiting rod.

[0010] Preferably, the upper end of the upper mold is fixedly connected to a top plate, the bottom side of the lower mold is fixedly connected to a bottom plate, the bottom surface of the upper mold and the top surface of the lower mold fit together and form a molding cavity inside, and the upper part of the top plate is provided with an injection port connected to the molding cavity.

[0011] Preferably, the four bottom ends of the upper mold are each provided with a limiting guide post, and the four limiting guide posts are movably inserted into four mounting grooves respectively provided at the four corners of the upper end of the lower mold.

[0012] Preferably, one side of the upper mold and the lower mold is provided with an ejection mechanism for ejecting the injection molding mold.

[0013] Compared with the related art, the injection mold with a limiting structure provided by the utility model has the following advantages:

[0014] Beneficial effects:

[0015] The utility model provides an injection mold with a limiting structure. When the upper mold and the lower mold are disassembled, the knob block and the limiting rod are pressed inwardly, and one side of the limiting rod applies pressure to the spring to make it contract, and the limiting block on the side wall of the mounting hole slides out from the slot provided on the limiting rod. At this time, the knob block is rotated to drive the limiting rod to rotate a certain angle, and the knob block is released, and the spring applies a thrust to the limiting rod, and the through slot on the limiting rod passes through the limiting block. At this time, one end of the limiting rod slides out from the limiting hole of the upper mold, and the limiting rod does not limit the upper mold, so the limiting rod can be drawn out of the mounting hole. The structure is simple to operate, and can quickly disassemble the upper mold and the lower mold compared to the traditional disassembly method by bolts, thereby improving the work efficiency to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of an injection mold with a limiting structure provided by the utility model;

[0017] Figure 2 A schematic diagram of the structural disassembly of an injection mold with a limiting structure provided by the utility model;

[0018] Figure 3 for Figure 2 The enlarged view of point A is shown;

[0019] Figure 4 A schematic diagram of the disassembly of the limiter structure provided by the utility model;

[0020] Figure 5 A schematic diagram of the cross-sectional structure of the position limiting member provided by the utility model;

[0021] Figure 6 for Figure 5 The enlarged view of point B is shown;

[0022] Figure 7 This is a schematic diagram of the cross-sectional structure of the limiting rod provided by the utility model.

[0023] Numbers in the figure: 1. lower mold; 2. upper mold; 3. top plate; 4. bottom plate; 5. molding cavity; 6. injection port; 7. limiting guide pin; 8. mounting slot; 9. mounting block; 10. spring; 11. limiting rod; 12. mounting hole; 13. limiting hole; 14. limiting block; 15. slot; 16. through slot; 17. knob block; 18. bolt hole; 19. ejection mechanism. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Please refer to Figure 1-Figure 7 ,in, Figure 1A schematic diagram of the overall structure of an injection mold with a limiting structure provided by the utility model; Figure 2 A schematic diagram of the structural disassembly of an injection mold with a limiting structure provided by the utility model; Figure 3 for Figure 2 The enlarged view of point A is shown; Figure 4 A schematic diagram of the disassembly of the limiter structure provided by the utility model; Figure 5 A schematic diagram of the cross-sectional structure of the position limiting member provided by the utility model;

[0026] Figure 6 for Figure 5 The enlarged view of point B is shown; Figure 7 This is a schematic diagram of the cross-sectional structure of the limiting rod provided by the utility model.

[0027] In the specific implementation process, Figure 1-Figure 7 As shown, an injection mold with a limiting structure includes an upper mold 2, a lower mold 1, and a plurality of limiting members for limiting the upper mold 2 and the lower mold 1;

[0028] The limiting member includes a mounting block 9, two springs 10 and two limiting rods 11. The bottom side of the mounting block 9 is provided with two bolt holes 18 for fixing it to the lower mold 1. The upper side of the mounting block 9 is provided with two mounting holes 12. The two limiting rods 11 are respectively inserted into the two mounting holes 12. One end of the limiting rod 11 matches the limiting hole 13 opened on the upper mold 2. The inner walls of the two mounting holes 12 are fixedly connected with one end of the spring 10. The other end of the spring 10 abuts against the side wall of the limiting rod 11 and applies a thrust to it. The limiting rod 11 is away from the spring 1 0 is provided with a knob block 17 on one side, and two limit blocks 14 are relatively provided on the side walls of the two mounting holes 12, and the two limit blocks 14 are respectively fitted with two slots 15 relatively provided on one side of the limit rod 11, and the limit rod 11 is also provided with one or more through slots 16, and the two limit blocks 14 can move in one group of through slots 16, and the two limit blocks 14 are symmetrically arranged relative to the central axis of the mounting hole 12, and one group of through slots 16 includes two through slots 16, and the two through slots 16 are symmetrically provided on one side of the limit rod 11 relative to the central axis of the limit rod 11;

[0029] The upper end of the upper mold 2 is fixedly connected with a top plate 3, and the bottom side of the lower mold 1 is fixedly connected with a bottom plate 4. The bottom surface of the upper mold 2 and the top surface of the lower mold 1 fit each other and form a molding cavity 5 inside. The upper part of the top plate 3 is provided with an injection port 6 connected with the molding cavity 5. The molten plastic is injected into the molding cavity 5 through the injection port 6. The plastic melt is evenly filled in the mold cavity and cooled and solidified. The four bottom ends of the upper mold 2 are each provided with a limiting guide post 7. The four limiting guide posts 7 are respectively and movably inserted into four mounting grooves 8 respectively opened at the four corners of the upper end of the lower mold 1 to ensure that the positions of the upper mold 2 and the lower mold 1 are accurately aligned.

[0030] One side of the upper mold 2 and the lower mold 1 is provided with an ejection mechanism 19 for ejecting the injection molding mold. After the mold after injection molding is fully cooled and solidified, the upper mold 2 and the lower mold 1 are disassembled. The ejection mechanism 19 can eject the mold adhered to the molding cavity 5 of the upper mold 2 or the lower mold 1. The ejection mechanism 19 is usually composed of components such as an ejector pin, an ejector plate 3, and a return rod. The ejector pin or the ejector plate 3 ejects the product from the molding cavity 5 by applying a force. When a return stroke is required, the return rod will bring the ejection mechanism 19 back to its original position under the return action of the injection molding machine to prepare for the next injection molding operation. The ejection mechanism 19 is common knowledge of technicians in this field and will not be described in detail here.

[0031] The working principle provided by the utility model is as follows: when disassembling the upper mold 2 and the lower mold 1, the knob block 17 and the limit rod 11 are pressed inward, and one side of the limit rod 11 applies pressure to the spring 10 to shrink it, and the limit block 14 on the side wall of the mounting hole 12 slides out from the slot 15 provided on the limit rod 11. At this time, the knob block 17 is rotated to drive the limit rod 11 to rotate a certain angle, and the knob block 17 is released. The spring 10 applies a thrust to the limit rod 11, and the through slot 16 on the limit rod 11 passes through the limit block 14. At this time, one end of the limit rod 11 slides out from the limit hole 13 of the upper mold 2, and the limit rod 11 does not move toward the upper mold 2 can be limited by pulling the limit rod 11 out of the mounting hole 12, and the upper mold 2 and the lower mold 1 can be disassembled. When installing the upper mold 2 and the lower mold 1, the limit guide column 7 of the upper mold 2 is inserted into the limit hole 13 of the lower mold 1, and the limit rod 11 is inserted into the mounting hole 12 and squeezed, so that the through hole on the limit rod 11 passes through the limit block 14 on the side wall of the mounting hole 12. At this time, the knob block 17 is rotated at a certain angle and the knob block 17 is loosened, so that the slot 15 on the limit rod 11 is inserted into the limit block 14, and one end of the limit rod 11 is inserted into the limit hole 13 of the upper mold 2 to fix it.

[0032] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An injection mold with a limiting structure, characterized in that: include: An upper mold (2), a lower mold (1), and a plurality of limiting members for limiting the positions of the upper mold (2) and the lower mold (1); The limiting component comprises a mounting block (9), two springs (10) and two limiting rods (11); the bottom side of the mounting block (9) is provided with two bolt holes (18) for fixing it to the lower mold (1); the upper side of the mounting block (9) is provided with two mounting holes (12); the two limiting rods (11) are respectively inserted into the two mounting holes (12); one end of the limiting rod (11) matches the limiting hole (13) provided on the upper mold (2); the inner walls of the two mounting holes (12) are fixedly connected to one end of the spring (10); The other end of the spring (10) abuts against the side wall of the limit rod (11) and applies a thrust thereto; a knob block (17) is provided on the side of the limit rod (11) away from the spring (10); two limit blocks (14) are provided on the side walls of the two mounting holes (12) opposite to each other; the two limit blocks (14) are respectively fitted with two slots (15) opposite to each other on one side of the limit rod (11); the limit rod (11) is also provided with one or more through slots (16); the two limit blocks (14) can move in one of the through slots (16).

2. The injection mold with a limiting structure according to claim 1, characterized in that: The two limit blocks (14) are symmetrically arranged relative to the central axis of the mounting hole (12).

3. The injection mold with a limiting structure according to claim 2, characterized in that: One group of through grooves (16) includes two through grooves (16), and the two through grooves (16) are symmetrically opened on one side of the limiting rod (11) relative to the central axis of the limiting rod (11).

4. The injection mold with a limiting structure according to claim 3, characterized in that: The upper end of the upper mold (2) is fixedly connected to a top plate (3), the bottom side of the lower mold (1) is fixedly connected to a bottom plate (4), the bottom surface of the upper mold (2) and the top surface of the lower mold (1) are in contact with each other and a molding cavity (5) is formed inside thereof, and an injection port (6) connected to the molding cavity (5) is provided on the upper part of the top plate (3).

5. The injection mold with a limiting structure according to claim 4, characterized in that: The bottom of the upper mold (2) is provided with four limiting guide pillars (7), and the four limiting guide pillars (7) are movably inserted into four installation grooves (8) respectively opened at the four corners of the upper end of the lower mold (1).

6. The injection mold with a limiting structure according to claim 5, characterized in that: An ejection mechanism (19) for ejecting the injection-molding mold is provided on one side of the upper mold (2) and the lower mold (1).

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