A round cover mold

Abstract

The application relates to the field of molds, in particular to a round cover mold which comprises a fixed mold and a movable mold, the fixed mold is connected to the movable mold in a vertical sliding mode, a first forming block is arranged on the movable mold, the fixed mold is provided with a second forming block corresponding to the first forming block, an upper surface of the first forming block is provided with a forming cavity, when the fixed mold moves downwards, the fixed mold is provided with an injection flow channel which extends to a lower surface of the second forming block. The application has the effect that convex points cannot be generated on the end surface of the round cover after injection.

Description

Technical Field

[0001] This application relates to the field of molds, and more particularly to a round cap mold. Background Technology

[0002] In existing round cap molds, the injection point is on the outside of the round cap during injection molding. This results in a small protrusion on the outer end face of the round cap after injection molding. If a trademark is to be affixed to the end face of the round cap, it will affect the flatness of the trademark. Utility Model Content

[0003] In order to prevent bumps from forming on the end face of the round cap after injection molding, this application provides a round cap mold.

[0004] This application provides a round cap mold, which adopts the following technical solution: A round cap mold includes a fixed mold and a movable mold. The fixed mold is slidably connected to the movable mold in a vertical direction. The movable mold is provided with a first molding block. The fixed mold is provided with a second molding block corresponding to the first molding block. A molding cavity is formed on the upper surface of the first molding block. When the fixed mold moves downward, an injection channel is formed on the fixed mold, and the injection channel extends to the lower surface of the second molding block.

[0005] By adopting the above technical solution, the injection runner is set on the fixed mold. During injection, the injection is performed from the lower surface of the second molding block into the molding cavity. This ensures that after the round cap is formed, the small protrusions formed by injection are on the inner side of the round cap, so as not to affect the labeling on the end face of the round cap.

[0006] Optionally, the moving mold is provided with an insert rod, which slides along the width direction of the moving mold and is connected to the moving mold. The insert rod can be inserted into the molding cavity.

[0007] By adopting the above technical solution, in order to facilitate the setting of a handle on the round cover, mounting holes are set on both sides of the round cover. Therefore, a rod is set on the moving mold. During injection molding, the rod can be inserted into the injection runner to form a mounting hole during injection molding.

[0008] Optionally, it also includes a base, and the moving mold is slidably connected to the base in a vertical direction. The moving mold is provided with a first driving assembly that forces the insert rod to slide. The first driving assembly includes a driving block and a driving rod. The driving block is slidably connected to the moving mold, the insert rod is disposed on the driving block, and the driving rod is disposed on the base. The driving block is provided with a guide groove, and the driving rod can be inserted into the guide groove. When the driving rod is inserted into the guide groove, the driving block slides towards the molding cavity.

[0009] By adopting the above technical solution, the moving mold is set on the template of the injection molding machine. During injection, the moving mold and the base move upward, and the fixed mold abuts against the moving mold. The moving mold and the base continue to move upward. Since the moving mold stops moving after abutting against the fixed mold, the base continues to move upward relative to the moving mold. Therefore, the drive rod moves upward relative to the drive block, so that the drive rod is inserted into the guide groove, thereby forcing the drive block to slide towards the molding cavity.

[0010] Optionally, the first drive assembly further includes a first spring that forces the drive block to slide away from the molding cavity.

[0011] By adopting the above technical solution, the first spring can force the drive block to slide away from the molding cavity, thereby causing the drive block to drive the insertion rod to reset.

[0012] Optionally, the moving mold is provided with a limiting block for limiting the position of the driving block on the side of the driving block away from the first forming block.

[0013] By adopting the above technical solution, the position of the drive block is adjusted by the limiting block, so that the guide groove of the drive block can be aligned with the drive rod under normal conditions, so that when the base moves upward relative to the moving mold, the drive rod can be inserted into the guide groove.

[0014] Optionally, the limiting block is provided with an adjusting block, the adjusting block being slidably connected to the limiting block along the width direction of the moving mold, and the limiting block being provided with a second driving component for driving the adjusting block to slide.

[0015] By adopting the above technical solution, an adjustment block is provided on the limiting block, and a second driving component is provided to drive the adjustment block to slide. This facilitates the adjustment block to slide through the second driving component, so that when the base moves upward relative to the moving mold, the driving rod can be inserted into the guide groove.

[0016] Optionally, the second drive assembly includes a lead screw, which is rotatably connected to a limiting block. The axial direction of the lead screw is parallel to the sliding direction of the adjusting block, and one end of the lead screw is rotatably connected to the adjusting block.

[0017] By adopting the above technical solution, the adjusting block can be forced to slide by rotating the transmission screw, thereby fine-tuning the position of the adjusting block.

[0018] Optionally, the second drive assembly further includes a knob, which is coaxially disposed at the end of the transmission lead screw, and the outer peripheral wall of the knob is provided with an actuation groove.

[0019] By adopting the above technical solution, the knob is rotated by moving the slot, which in turn drives the transmission screw to rotate.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. The injection runner is set on the fixed mold. During injection, the injection is performed from the lower surface of the second molding block into the molding cavity. This ensures that after the round cap is formed, the small protrusions formed by injection are on the inner side of the round cap, so as not to affect the labeling on the end face of the round cap. 2. An adjustment block is provided on the limiting block, and a second driving component is provided to drive the adjustment block to slide, so that the adjustment block can slide through the second driving component, and the driving rod can be inserted into the guide groove when the base moves upward relative to the moving mold. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Example 1; Figure 2 This is a schematic diagram of the structure of the first driving component in Embodiment 1; Figure 3 This is a schematic diagram of the structure of Example 2.

[0022] Explanation of reference numerals in the attached drawings: 1. Base; 2. Moving mold; 21. First mounting slot; 3. Fixed mold; 31. Injection runner; 4. First molding block; 41. Molding cavity; 5. Second molding block; 6. Insert rod; 61. First drive assembly; 611. Drive block; 612. Drive rod; 613. First spring; 62. Guide groove; 63. Limiting block; 631. Third mounting slot; 632. Fourth mounting slot; 64. Second mounting slot; 65. Adjusting block; 66. Second drive assembly; 661. Transmission screw; 662. Knob. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0024] Example 1: Embodiment 1 of this application discloses a round cap mold. (Refer to...) Figure 1 and Figure 2 It includes a base 1, a fixed mold 3 and a moving mold 2. The moving mold 2 is connected to the base 1 by sliding along the vertical direction through a guide post. The base 1 is also provided with a second spring that forces the moving mold 2 to slide away from the base 1. The moving mold 2 is connected to the fixed mold 3 by sliding along the vertical direction.

[0025] Reference Figure 1 and Figure 2A first molding block 4 is fixedly mounted on the moving mold 2, and a second molding block 5 corresponding to the first molding block 4 is fixed on the fixed mold 3. A molding cavity 41 is formed on the upper surface of the first molding block 4. During injection molding, the moving mold 2 moves upward, so that the second molding block 5 is located in the molding cavity 41, and there is a gap between the second molding block 5 and the cavity wall of the molding cavity 41. The fixed mold 3 has an injection runner 31 that extends to the lower surface of the second molding block 5. During injection molding, liquid plastic is injected into the injection runner 31 and then passes through the second molding block 5 to the gap between the second molding block 5 and the cavity wall of the molding cavity 41, so that the workpiece is formed.

[0026] Reference Figure 1 and Figure 2 The moving mold 2 has insert rods 6 on both sides of the first molding block 4, with the length direction of the insert rods 6 parallel to the width direction of the moving mold 2. The insert rods 6 slide along the width direction of the moving mold 2 and are connected to the moving mold 2, and can pass into the molding cavity 41. The moving mold 2 is provided with a first driving assembly 61 that forces the insert rods 6 to slide. The first driving assembly 61 includes a driving block 611 and a driving rod 612. The moving mold 2 has a first mounting groove 21 on one side of the first molding block 4, and the driving block 611 is located in the first mounting groove 21 and is slidably connected to the first mounting groove 21.

[0027] Reference Figure 1 and Figure 2 The end of the insert rod 6 away from the molding block is fixedly connected to the drive block 611. The drive rod 612 is fixedly installed on the base 1. The drive rod 612 is inclined from top to bottom towards the first molding block 4. The lower surface of the drive block 611 is provided with a guide groove 62. The guide groove 62 and the drive rod 612 are coaxially arranged. When the base 1 slides upward relative to the moving mold 2, the drive rod 612 can be inserted into the guide groove 62, thereby causing the drive block 611 to slide towards the molding cavity 41.

[0028] Reference Figure 1 and Figure 2 The first drive assembly 61 also includes a first spring 613. The drive block 611 has a second mounting groove 64 on its side near the first molding block 4. The first spring 613 is located in the second mounting groove 64. One end of the first spring 613 abuts against the groove wall of the second mounting groove 64, and the other end of the first spring 613 abuts against the groove wall of the first mounting groove 21. The first spring 613 forces the drive block 611 to slide away from the first molding block 4.

[0029] Reference Figure 1 and Figure 2A limiting block 63 is fixedly installed on one side of the mounting groove. One end of the limiting block 63 abuts against the driving block 611. The initial position of the driving block 611 is limited by the limiting block 63, so that the guide groove 62 and the driving rod 612 are coaxially arranged.

[0030] The implementation principle of Embodiment 1 of this application is as follows: the injection channel 31 is set on the fixed mold 3. During injection molding, the injection is performed from the lower surface of the second molding block 5 into the molding cavity 41, so that after the round cover is formed, the small protrusions formed by injection are on the inner side of the round cover, so as not to affect the labeling on the end face of the round cover.

[0031] Example 2: The difference between Example 2 and Example 1 is that, referring to Figure 3 The limiting block 63 is provided with an adjusting block 65. The side of the limiting block 63 near the driving block 611 has a third mounting groove 631. The adjusting block 65 slides along the axis of the first spring 613 and is connected to the third mounting groove 631. The limiting block 63 is provided with a second driving component 66 to drive the adjusting block 65 to slide.

[0032] Reference Figure 3 The second drive assembly 66 includes a transmission screw 661, the axis of which is parallel to the axis of the first spring 613. The transmission screw 661 is threaded to the limiting block 63, and one end of the transmission screw 661 extends into the third mounting groove 631 and is rotatably connected to the adjusting block 65.

[0033] Reference Figure 3 The second drive assembly 66 also includes a knob 662. A fourth mounting groove 632 is provided on the upper surface of the limiting block 63. The knob 662 is located within the fourth mounting groove 632 and is coaxially fixedly connected to the end of the transmission screw 661 away from the adjusting block 65. The diameter of the knob 662 is smaller than the thickness of the limiting block 63, ensuring that the knob 662 does not protrude from the upper surface of the limiting block 63. Several actuation grooves are arranged around the outer peripheral wall of the knob 662 to facilitate rotation of the knob 662 through these grooves.

[0034] The implementation principle of Embodiment 2 is as follows: An adjustment block 65 is provided on the limiting block 63, and a second driving component 66 is provided to drive the adjustment block 65 to slide, so that the adjustment block 65 can slide through the second driving component 66, and the driving rod 612 can be inserted into the guide groove 62 when the base moves upward relative to the moving mold 2.

[0035] 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 round cap mold, characterized in that: The mold includes a fixed mold (3) and a movable mold (2). The fixed mold (3) is slidably connected to the movable mold (2) in the vertical direction. The movable mold (2) is provided with a first molding block (4). The fixed mold (3) is provided with a second molding block (5) corresponding to the first molding block (4). The upper surface of the first molding block (4) is provided with a molding cavity (41). When the fixed mold (3) moves downward, the fixed mold (3) is provided with an injection channel (31). The injection channel (31) extends to the lower surface of the second molding block (5).

2. A round cap mold according to claim 1, characterized in that: The moving mold (2) is provided with a rod (6), which slides along the width direction of the moving mold (2) and is connected to the moving mold (2). The rod (6) can be inserted into the molding cavity (41).

3. A round cap mold according to claim 2, characterized in that: It also includes a base (1), the moving mold (2) is slidably connected to the base (1) in the vertical direction, the moving mold (2) is provided with a first driving assembly (61) that forces the insert rod (6) to slide, the first driving assembly (61) includes a driving block (611) and a driving rod (612), the driving block (611) is slidably connected to the moving mold (2), the insert rod (6) is provided on the driving block (611), the driving rod (612) is provided on the base (1), the driving block (611) is provided with a guide groove (62), the driving rod (612) can be inserted into the guide groove (62), when the driving rod (612) is inserted into the guide groove (62), the driving block (611) slides towards the molding cavity (41).

4. A round cap mold according to claim 3, characterized in that: The first drive assembly (61) further includes a first spring (613) that forces the drive block (611) to slide away from the molding cavity (41).

5. A round cap mold according to claim 4, characterized in that: The moving mold (2) is provided with a limiting block (63) on the side of the driving block (611) away from the first forming block (4) for limiting the position of the driving block (611).

6. A round cap mold according to claim 5, characterized in that: The limiting block (63) is provided with an adjusting block (65), the adjusting block (65) slides along the width direction of the moving mold (2) and is connected to the limiting block (63), and the limiting block (63) is provided with a second driving component (66) to drive the adjusting block (65) to slide.

7. A round cap mold according to claim 6, characterized in that: The second drive assembly (66) includes a transmission screw (661), which is rotatably connected to a limiting block (63). The axial direction of the transmission screw (661) is parallel to the sliding direction of the adjusting block (65), and one end of the transmission screw (661) is rotatably connected to the adjusting block (65).

8. A round cap mold according to claim 7, characterized in that: The second drive assembly (66) further includes a knob (662), which is coaxially disposed at the end of the transmission screw (661), and the outer peripheral wall of the knob (662) is provided with a toggle groove.

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