A press rod structure for preventing a pre-embedded nut in a part from toppling
Patent Information
- Application Number
- CN202522407635.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-13
AI Technical Summary
[0002]目前，注塑零件需要上模具和下模具进行合并，并从上模具的进料口倒入目标零件流动材料，进而经过冷却形成目标零件，但是，有的目标零件上需要放置目标预埋螺母，将目标预埋螺母放置在下模具的模具销上，随后进行目标零件流动材料的倒入，由于目标零件流动材料的流动性，有时会使目标预埋螺母发生倾斜，造成目标零件无法使用，从而降低目标零件的合格率
通过设置压杆和复位弹簧，压杆的底端将目标预埋螺母进行固定，防止目标流体材料在填加过程使目标预埋螺母发生倾斜，同时，复位弹簧具有一定的弹力，能够使压杆在固定目标预埋螺母时，压杆不会压坏预设螺母，进而提高目标零件的合格率。
Smart Images
Figure CN224827376U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of injection molds, and more particularly to a pressure bar structure for preventing pre-embedded nuts in parts from tipping over. Background Technology
[0002] Currently, injection molded parts require the merging of upper and lower molds, and the flow material of the target part is poured into the feed port of the upper mold. After cooling, the target part is formed. However, some target parts require the placement of a target embedded nut. The target embedded nut is placed on the mold pin of the lower mold, and then the flow material of the target part is poured in. Due to the fluidity of the flow material of the target part, the target embedded nut may sometimes tilt, making the target part unusable and thus reducing the pass rate of the target part. Utility Model Content
[0003] In order to prevent the target embedded nut from tilting and improve the pass rate of the target part, this application provides a pressure bar structure to prevent the embedded nut in the part from tilting.
[0004] The pressure bar structure for preventing the pre-embedded nut in a part provided in this application adopts the following technical solution: A pressure rod structure for preventing the tipping of a pre-embedded nut in a part includes an upper mold, a lower mold, and a target pre-embedded nut placed between the upper and lower molds. It also includes a connecting block, a pressure rod, and a return spring. The upper mold has a connecting hole located directly above the target pre-embedded nut. The connecting block is located directly above the connecting hole. A sliding groove is formed at the bottom of the connecting block, and a receiving groove is formed at the bottom of the groove. One end of the pressure rod is slidably installed in the receiving groove, and the other end is slidably installed in the connecting hole, with the bottom end of the pressure rod abutting against the target pre-embedded nut. One end of the return spring abuts against the bottom of the receiving groove, and the other end is fixedly connected to the pressure rod.
[0005] Optionally, the connecting block is provided with a limiting component for limiting the pressure rod.
[0006] Optionally, the pressure rod has a limiting groove, the connecting block has a placement groove, the bottom of the placement groove has a limiting hole, the limiting assembly includes a limiting rod, a limiting spring and a limiting plate, one end of the limiting rod is located in the placement groove, the other end passes through the limiting hole and is located in the limiting groove, the limiting plate is located at the opening of the placement groove, the limiting plate is fixedly connected to the limiting rod, the limiting spring is looped on the limiting rod, one end of the limiting spring is fixedly connected to the bottom of the placement groove, and the other end is rotatably connected to the limiting plate.
[0007] Optionally, the end of the limiting rod inserted into the limiting groove is inclined.
[0008] Optionally, the limiting plate has a T-shaped circular groove, the limiting rod is fixedly installed at the bottom of the T-shaped circular groove, and an H-shaped ring is fixedly installed on the limiting spring. The H-shaped ring is rotatably connected to the limiting plate through the T-shaped circular groove.
[0009] Optionally, the end of the limiting plate opposite to the limiting rod is engraved with a directional mark corresponding to the inclined end of the limiting rod.
[0010] In summary, this application includes at least one of the following beneficial technical effects: By setting up a pressure rod and a return spring, the bottom end of the pressure rod fixes the target pre-embedded nut, preventing the target fluid material from causing the target pre-embedded nut to tilt during the filling process. At the same time, the return spring has a certain elasticity, which ensures that the pressure rod will not damage the pre-embedded nut when fixing it, thereby improving the pass rate of the target parts. Attached Figure Description
[0011] Figure 1 This is a cross-sectional view of a pressure bar structure for preventing the pre-embedded nut in a part from tipping over, according to an embodiment of this application.
[0012] Figure 2 This is a cross-sectional view of a connecting block of a pressure rod structure for preventing the pre-embedded nut in a part from tipping over, according to an embodiment of this application.
[0013] Explanation of reference numerals in the attached drawings: 1. Upper mold; 11. Feed port; 2. Lower mold; 21. Mold pin; 3. Target embedded nut; 4. Connecting block; 41. Slide groove; 42. Receiving groove; 43. Placement groove; 44. Limiting hole; 5. Pressure rod; 51. Limiting groove; 6. Return spring; 7. Limiting assembly; 71. Limiting rod; 72. Limiting spring; 721. H-shaped ring; 73. Limiting plate; 731. T-shaped circular groove; 732. Indicator. Detailed Implementation
[0014] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0015] This application discloses a pressure bar structure to prevent the pre-embedded nut in a part from tipping over.
[0016] Reference Figure 1 and Figure 2 A pressure rod structure for preventing the pre-embedded nut in a part from tipping over consists of an upper mold 1, a lower mold 2, a target pre-embedded nut 3, a connecting block 4, a pressure rod 5, and a return spring 6.
[0017] The lower mold 2 is placed on the target platform (not shown). A mold pin 21 is vertically fixed inside the lower mold 2. The target pre-embedded nut 3 is placed on the mold pin 21 of the lower mold 2. The upper mold 1 is located directly above the lower mold 2. A target pressing device is installed on the lower mold 2. The target pressing device is used to drive the upper mold 1 to move downward, causing the upper mold 1 and the lower mold 2 to close together. The upper mold 1 is also provided with a feed port 11. The target part fluid material flows into the space between the upper mold 1 and the lower mold 2 through the feed port 11, and then is cooled to form the target part.
[0018] When the target part fluid material is poured into the feed port 11, the target embedded nut 3 placed on the mold pin 21 tilts due to the fluidity of the target part fluid material. Therefore, a connecting hole is provided on the upper mold 1, which is located directly above the target embedded nut 3. The connecting block 4 is installed directly above the connecting hole through an auxiliary telescopic device (not shown). A sliding groove 41 is provided at the bottom of the connecting block 4, and a receiving groove 42 is provided at the bottom of the sliding groove 41. One end of the pressure rod 5 is slidably installed in the receiving groove 42, and the other end is slidably installed in the connecting hole. The bottom end of the pressure rod 5 abuts against the target embedded nut 3. One end of the return spring 6 abuts against the bottom of the receiving groove 42, and the other end is fixedly connected to the pressure rod 5.
[0019] By setting up the pressure rod 5 and the return spring 6, the bottom end of the pressure rod 5 fixes the target pre-embedded nut 3, preventing the target pre-embedded nut 3 from tilting during the filling process of the target fluid material. At the same time, the return spring 6 has a certain elasticity, which ensures that the pressure rod 5 will not crush the pre-embedded nut 3 when fixing it.
[0020] It should also be noted that when placing the target pre-embedded nut 3, the pressure rod 5 can be moved upward, causing the pressure rod 5 to compress the return spring 6. Then, the target pre-embedded nut 3 is placed on the mold pin 21. Finally, the pressure rod 5 is released, the return spring 6 is reset, and the bottom end of the pressure rod 5 abuts against the target pre-embedded nut 3.
[0021] To limit the elastic range of the return spring 6 and limit the position of the pressure rod 5, a limiting groove 51 is formed on the corresponding side wall of the pressure rod 5. The limiting groove 51 is vertically formed. A placement groove 43 is formed on the corresponding side wall of the connecting block 4. A limiting hole 44 is formed horizontally at the bottom of the placement groove 43. A set of limiting components 7 is installed at each limiting hole 44. A set of limiting components 7 includes a limiting rod 71, a limiting spring 72, and a limiting plate 73. One end of the limiting rod 71 is located in the limiting groove 51, and the other end passes through the corresponding limiting hole 44 and is located in the placement groove 43. The limiting plate 73 is located at the corresponding placement groove 43. At the opening of groove 43, a T-shaped circular groove 731 is formed on the limiting plate 73. The limiting rod 71 is fixedly installed at the bottom of the T-shaped circular groove 731, so that when the limiting plate 73 rotates, it can drive the limiting rod 71 to rotate. The limiting spring 72 is located inside the placement groove 43, and the limiting spring 72 is looped around the corresponding limiting rod 71. One end of the limiting spring 72 is fixedly connected to the bottom of the corresponding placement groove 43, and the other end is fixedly installed with an H-shaped ring. The H-shaped ring is rotatably connected to the limiting plate 73 through the T-shaped circular groove 731, so that when the limiting plate 73 rotates, it cannot drive the limiting spring 72 to rotate. It should be noted that the end of the limiting plate 73 opposite to the limiting rod 71 is engraved with an indicator 732 corresponding to the inclined end of the limiting rod 71.
[0022] Because the limiting groove 51 is vertically oriented and the limiting rod 71 is inserted into the limiting groove 51, the sliding distance of the pressure rod 5 in the vertical direction is limited only by the length of the limiting groove 51 in the vertical direction, which also limits the elastic range of the return spring 6. It should be noted that when using the pressure rod 5, the inclined end of the limiting rod 71 faces forward or backward, and the auxiliary telescopic device is in a fixed state, that is, it does not perform vertical telescopic operation.
[0023] When the pressure rod 5 is damaged and needs to be disassembled, the auxiliary telescopic device works, which drives the connecting rod to move upward, so that the bottom end of the pressure rod 5 slides out of the connecting hole of the upper mold 1. Then, the operator rotates the limiting plate 73, so that the indicator 732 faces upward, and the inclined end of the limiting rod 71 faces upward. The pressure rod 5 moves downward, so that the groove wall of the upper limiting groove 51 of the pressure rod 5 applies a pressure to the inclined end of the limiting rod 71, so that the inclined end of the limiting rod 71 slides into the corresponding limiting hole 44. The pressure rod 5 continues to move downward until the pressure rod 5 and the return spring 6 slide out of the slide groove 41.
[0024] When the pressure rod 5 needs to be installed, the operator rotates the limiting plate 73, causing the indicator 732 to face downwards, and the inclined end of the limiting rod 71 to face downwards. The pressure rod 5 and the return spring 6 are then slid upwards and installed into the slide groove 41. The top of the pressure rod 5 applies pressure to the inclined end of the limiting rod 71, causing the inclined end of the limiting rod 71 to slide into the corresponding limiting hole 44. The two limiting rods 71 drive the limiting plate 73 to move in opposite directions, and the limiting plate 73 stretches the limiting spring 72. When the limiting groove 51 corresponds to the limiting hole 44, the limiting spring 72 returns to its original position, the limiting plate 73 returns to its original position, and the inclined end of the limiting rod 71 slides into the corresponding limiting groove 51. Then, the limiting plate 73 is rotated, causing the inclined end of the limiting rod 71 to face forward and backward. Finally, the auxiliary telescopic device works, driving the connecting rod downwards, so that the bottom end of the pressure rod 5 slides into the connecting hole of the upper mold 1.
[0025] The implementation principle of the pressure rod structure for preventing the pre-embedded nut in a part according to the embodiment of this application is as follows: by setting pressure rod 5 and return spring 6, the bottom end of pressure rod 5 fixes the target pre-embedded nut 3, preventing the target pre-embedded nut 3 from tilting during the filling process of the target fluid material. At the same time, the return spring 6 has a certain elasticity, which ensures that the pressure rod 5 will not crush the pre-embedded nut when fixing the target pre-embedded nut 3, thereby improving the pass rate of the target part.
[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A pressure bar structure for preventing the pre-embedded nut in a part from tipping over, comprising an upper mold (1), a lower mold (2), and a target pre-embedded nut (3) placed between the upper and lower molds (2), characterized in that: It also includes a connecting block (4), a pressure rod (5), and a return spring (6). The upper mold (1) has a connecting hole, which is located directly above the target pre-embedded nut (3). The connecting block (4) is located directly above the connecting hole. The bottom end of the connecting block (4) has a sliding groove (41), and the bottom of the sliding groove (41) has a receiving groove (42). One end of the pressure rod (5) is slidably installed in the receiving groove (42), and the other end is slidably installed in the connecting hole. The bottom end of the pressure rod (5) abuts against the target pre-embedded nut (3). One end of the return spring (6) abuts against the bottom of the receiving groove (42), and the other end is fixedly connected to the pressure rod (5).
2. The pressure bar structure for preventing the pre-embedded nut in a part from tilting according to claim 1, characterized in that: The connecting block (4) is provided with a limiting component (7) for limiting the pressure rod (5).
3. The pressure rod structure for preventing the pre-embedded nut in a part from tilting according to claim 2, characterized in that: The pressure rod (5) has a limiting groove (51), the connecting block (4) has a placement groove (43), the bottom of the placement groove (43) has a limiting hole (44), the limiting component (7) includes a limiting rod (71), a limiting spring (72) and a limiting plate (73), one end of the limiting rod (71) is located in the placement groove (43), and the other end passes through the limiting hole (44) and is located in the limiting groove (51), the limiting plate (73) is located at the opening of the placement groove (43), the limiting plate (73) is fixedly connected to the limiting rod (71), the limiting spring (72) is looped on the limiting rod (71), one end of the limiting spring (72) is fixedly connected to the bottom of the placement groove (43), and the other end is rotatably connected to the limiting plate (73).
4. A pressure bar structure for preventing the pre-embedded nut in a part from tilting, as described in claim 3, is characterized in that: The end of the limiting rod (71) inserted into the limiting groove (51) is inclined.
5. A pressure bar structure for preventing the pre-embedded nut in a part from tilting, as described in claim 4, is characterized in that: The limiting plate (73) has a T-shaped circular groove (731), the limiting rod (71) is fixedly installed at the bottom of the T-shaped circular groove (731), and an H-shaped ring is fixedly installed on the limiting spring (72). The H-shaped ring is rotatably connected to the limiting plate (73) through the T-shaped circular groove (731).
6. A pressure bar structure for preventing the pre-embedded nut in a part from tilting, as described in claim 5, is characterized in that: The end of the limiting plate (73) facing away from the limiting rod (71) is engraved with an index (732) corresponding to the inclined end of the limiting rod (71).