Street lamp switch shell injection mold

Abstract

The application relates to a street lamp switch shell injection mold, which comprises a fixed mold and a movable mold, the fixed mold and the movable mold form an injection cavity, a first sealing rod is arranged in the fixed mold, a second sealing rod is arranged in the movable mold, the first sealing rod and the second sealing rod are respectively used for contacting two ends of an embedded nut, the first sealing rod is connected with a first elastic piece, and the second sealing rod is connected with a second elastic piece. In use, the first elastic piece drives the first sealing rod to abut against the embedded nut, and the second elastic piece drives the second sealing rod to abut against the embedded nut, so that the two ends of the embedded nut abut against the first sealing rod and the second sealing rod respectively during injection, thereby avoiding the situation that plastic enters the embedded nut as much as possible, and improving product quality.

Description

Technical Field

[0001] This application relates to the field of injection molds, and more particularly to an injection mold for a street light switch housing. Background Technology

[0002] Injection molding is a highly efficient process widely used in the production of plastic products. This process primarily relies on the coordinated operation of an injection molding machine and an injection mold. The injection molding machine heats and melts solid plastic granules to a fluid state, then injects the molten plastic into a closed mold cavity under high pressure.

[0003] In the production of plastic components such as street light switch housings, injection molding machines are typically used for injection molding. (See reference...) Figure 1 and Figure 2 A street light switch housing includes a first housing and a second housing. The first housing has a first threaded hole, and the second housing has a second threaded hole. The first housing and the second housing are detachably connected by bolts. The bolts pass through the first housing and the second housing, and the bolts are threadedly connected to the inner walls of the first threaded hole and the second threaded hole.

[0004] During injection molding, the first shell and the second shell are produced by placing the embedded nut in the corresponding position on the mold before injection molding, thereby producing the first shell with the first threaded hole and the second shell with the second threaded hole.

[0005] Regarding the aforementioned technologies, there is a possibility that plastic may enter the nut during the production process, which could prevent the bolt from being screwed into the first or second threaded hole, thus affecting product quality. Utility Model Content

[0006] To reduce the amount of plastic entering the nut and improve product quality, this application provides an injection mold for a street light switch housing.

[0007] The technical solution for the injection mold of a street light switch housing provided in this application is as follows:

[0008] A street light switch housing injection mold includes a fixed mold and a moving mold, the fixed mold and the moving mold forming an injection cavity. The fixed mold is provided with a first sealing rod, and the moving mold is provided with a second sealing rod. The first sealing rod and the second sealing rod are respectively used to contact the two ends of a nut. The first sealing rod is connected to a first elastic element, which is used to drive the first sealing rod to move and abut against the nut. The second sealing rod is connected to a second elastic element, which is used to drive the second sealing rod to move and abut against the nut.

[0009] By adopting the above technical solution, during use, the first elastic element drives the first sealing rod to press against the nut, and the second elastic element drives the second sealing rod to press against the nut, so that during injection molding, both ends of the nut abut against the first sealing rod and the second sealing rod respectively, thereby minimizing the possibility of plastic entering the nut and minimizing the possibility of thread hole blockage, thus improving product quality.

[0010] Optionally, one end of the first sealing rod is connected to a first protrusion, which is used to contact the nut, and one end of the second sealing rod is connected to a second protrusion, which is used to contact the nut.

[0011] By adopting the above technical solution, during use, the first protrusion contacts the nut and extrudes a corresponding groove at one end of the nut. When the first sealing rod is pressed against the nut, the first protrusion presses against the groove, thereby increasing the contact area between the first sealing rod and the nut and improving the sealing performance between them. During use, the second protrusion contacts the nut and extrudes a corresponding groove at one end of the nut. When the second sealing rod is pressed against the nut, the second protrusion presses against the groove, thereby increasing the contact area between the second sealing rod and the nut and improving the sealing performance between them. This further reduces the possibility of plastic entering the nut.

[0012] Optionally, the moving mold is provided with a molding component for manufacturing the panel undercut structure. The molding component includes a side top block and a driving component. The side top block is slidably connected to the moving mold. When the moving mold and the fixed mold are closed, the driving component drives the side top block and the moving mold to form the injection space of the panel undercut structure. When the fixed mold and the moving mold are separated, the driving component drives the side top block to detach from the panel undercut structure.

[0013] By adopting the above technical solution, the undercut structure of the panel is used to install equipment. During the injection molding process, the plastic enters the injection space between the side top and the moving mold to form the undercut structure. When the injection molding is completed and the mold is demolded, the drive component drives the side top block to move and move the side top block away from the undercut mechanism, thereby facilitating the demolding of the product.

[0014] Optionally, a base is connected to the end of the moving mold away from the fixed mold. The base is slidably fitted to the moving mold. The driving component is a guide block. The guide block is connected to the base and slidably fitted to the moving mold. A guide surface is provided at one end of the guide block. The side top block is slidably fitted to the guide surface. The guide surface is used to guide the undercut structure of the side top block away from the panel.

[0015] By adopting the above technical solution, during demolding, the base moves and the guide block moves with the base, so that the guide block slides and engages with the base, and the side top block slides and engages with the guide surface, thereby making it easier for the side top block to move away from the undercut structure.

[0016] Optionally, the guide surface is provided with a dovetail groove, and a dovetail block is connected to one end of the side top block near the guide block. The dovetail block slides and fits into the dovetail groove.

[0017] By adopting the above technical solution, during demolding, the dovetail block slides and fits into the dovetail groove, thereby limiting the movement direction of the guide block and making the guide block move stably in the predetermined direction.

[0018] Optionally, the moving mold is connected to a positioning block, and the fixed mold has a positioning groove, through which the positioning block is inserted into the fixed mold.

[0019] By adopting the above technical solution, when the moving mold and the fixed mold are closed, the positioning block is inserted into the positioning groove, thereby making the closing position of the fixed mold and the moving mold more accurate and improving product quality.

[0020] Optionally, the first protrusion is connected to the first sealing rod via a first cylinder, the first cylinder being slidably connected to the first sealing rod, and the first sealing rod being connected to a first movable member. The first movable member is used to drive the first protrusion to move and bring the first protrusion closer to the nut. The second protrusion is connected to the second sealing rod via a second cylinder, the second cylinder being slidably connected to the second sealing rod, and the second sealing rod being connected to a second movable member. The second movable member is used to drive the second protrusion to move and bring the second protrusion closer to the nut.

[0021] By adopting the above technical solution, when there is a certain distance between the first protrusion and the nut, the first moving part moves the first cylinder so that the first cylinder and the first protrusion are close to the nut and abut against the nut, thereby minimizing the impact of the installation error of the first sealing rod on the sealing performance between the nut and the first sealing rod. When there is a certain distance between the second protrusion and the nut, the second moving part moves the second cylinder so that the second cylinder and the second protrusion are close to the nut and abut against the nut, thereby minimizing the impact of the installation error of the second sealing rod on the sealing performance between the nut and the second sealing rod.

[0022] Optionally, the first moving part includes a first bolt, which is rotatably connected to the first sealing rod, and the first cylindrical thread is threaded onto the first bolt. The second moving part includes a second bolt, which is rotatably connected to the second sealing rod, and the second cylindrical thread is threaded onto the second bolt.

[0023] By adopting the above technical solution, rotating the first bolt causes the first cylinder to slide and engage with the first sealing rod, thereby driving the first cylinder and the first protrusion to approach and abut against the nut, thus improving the sealing performance between the first sealing rod and the nut. Rotating the second bolt causes the second cylinder to slide and engage with the second sealing rod, thereby driving the second cylinder and the second protrusion to approach and abut against the nut, thus improving the sealing performance between the second sealing rod and the nut.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. In use, the first elastic element drives the first sealing rod to press against the nut, and the second elastic element drives the second sealing rod to press against the nut, so that during injection molding, both ends of the nut abut against the first sealing rod and the second sealing rod respectively, thereby reducing the possibility of plastic entering the nut and improving product quality;

[0026] 2. During use, the first protrusion contacts the nut and extrudes a corresponding groove at one end of the nut. When the first sealing rod is pressed against the nut, the first protrusion presses against the groove, thereby increasing the contact area between the first sealing rod and the nut and improving the sealing performance. During use, the second protrusion contacts the nut and extrudes a corresponding groove at one end of the nut. When the second sealing rod is pressed against the nut, the second protrusion presses against the groove, thereby increasing the contact area between the second sealing rod and the nut and improving the sealing performance. This further reduces the possibility of plastic entering the nut.

[0027] 3. The undercut structure of the panel is used for installing equipment. During the injection molding process, the plastic enters the injection space between the side top and the moving mold, thus forming the undercut structure. When the injection molding is completed and the mold is demolded, the drive component moves the side top block away from the undercut mechanism, thereby facilitating the demolding of the product. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the first shell in a street light switch housing in the prior art.

[0029] Figure 2 This is a three-dimensional structural diagram of the second shell in a street light switch housing in the prior art.

[0030] Figure 3 This is a three-dimensional structural schematic diagram of Example 1.

[0031] Figure 4 This is a cross-sectional structural diagram of Embodiment 1, used to show the first sealing rod, the second sealing rod, the guide block, and the side top block.

[0032] Figure 5 This is Example 1 Figure 4 Enlarged view of part A in the middle.

[0033] Figure 6 This is a cross-sectional view of Embodiment 1, used to show the sliding rod and the sliding groove.

[0034] Figure 7 This is a three-dimensional structural diagram of the guide block and the side top block in Embodiment 1.

[0035] Figure 8 This is a three-dimensional structural diagram of the first sealing rod and the second sealing rod in Embodiment 2.

[0036] Figure 9 This is Example 2 Figure 8 A sectional view used to show the first cylinder and the second cylinder.

[0037] Explanation of reference numerals in the attached drawings: 1. First shell; 2. First threaded hole; 3. Second shell; 4. Second threaded hole; 100. Fixed mold; 110. Injection chamber; 120. First sealing rod; 121. Support rod; 122. First protrusion; 130. First spring; 140. Positioning groove; 150. First mounting groove; 160. First cylinder; 170. First adjusting groove; 171. First fixing rod; 172. First bolt; 200. Moving mold; 220. Second sealing rod; 221. Second protrusion; 2 30. Second spring; 240. Positioning block; 241. Second mounting groove; 250. Sliding groove; 251. Limiting groove; 260. Moving groove; 270. Second cylinder; 280. Second adjusting groove; 281. Second fixing rod; 282. Second bolt; 300. Base; 310. Sliding rod; 311. Stop block; 400. Molding component; 410. Side top block; 411. Second guide surface; 412. Dovetail block; 420. Guide block; 421. First guide surface; 422. Dovetail groove. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 3-9 This application will be described in further detail.

[0039] This application discloses an injection mold for a street light switch housing.

[0040] Example 1

[0041] Reference Figure 3 and Figure 4A street light switch housing injection mold includes a fixed mold 100, a movable mold 200, and a base 300. The movable mold 200 is connected to the base 300, and the base 300 is used to connect to the injection molding machine body. The fixed mold 100 is also used to connect to the injection molding machine body. After the fixed mold 100 and the movable mold 200 are closed, an injection cavity 110 is formed. The fixed mold 100 is provided with a first sealing rod 120 and a first elastic element. The first elastic element is used to move the first sealing rod 120 and drive it to abut against one end of the nut. The movable mold 200 is provided with a second sealing rod 220 and a second elastic element. The second elastic element is used to move the second sealing rod 220 and drive it to abut against the other end of the nut. The first elastic element drives the first sealing rod 120 to abut against one end of the nut, and the second elastic element drives the second sealing rod 220 to abut against the other end of the nut, thereby reducing the possibility of plastic entering the nut, minimizing the possibility of thread hole blockage, and improving product quality.

[0042] Reference Figure 3 The moving mold 200 has positioning blocks 240 connected to both ends in the width direction, and the fixed mold 100 has positioning grooves 140 opened at both ends in the width direction. The positioning blocks 240 are inserted into the fixed mold 100 through the positioning grooves 140. When the moving mold 200 and the fixed mold 100 are closed, the positioning blocks 240 are inserted into the positioning grooves 140.

[0043] Reference Figure 4 and Figure 5 The fixed mold 100 has a first mounting groove 150, the depth direction of which is consistent with the thickness direction of the fixed mold 100. A first sealing rod 120 is connected within the first mounting groove 150, and the first elastic element is a first spring 130, the length direction of which is consistent with the depth direction of the first mounting groove 150. One end of the first spring 130 is connected to the inner wall of the first mounting groove 150, and the other end of the first spring 130 is connected to the first sealing rod 120. A support rod 121 is connected to the end of the first sealing rod 120 away from the first spring 130. The length direction of the support rod 121 is consistent with the length direction of the first sealing rod 120, and the central axis of the support rod 121 is collinear with the central axis of the first sealing rod 120. In use, a nut is fitted onto the support rod 121. One end of the first sealing rod 120 is connected to a first protrusion 122, which is annular in shape. The central axis of the first protrusion 122 is collinear with the central axis of the first sealing rod 120. The first protrusion 122 is used to contact one end of the nut. The addition of the first protrusion 122 increases the contact area between the first sealing rod 120 and the nut, thereby improving the sealing performance between them.

[0044] Reference Figure 4 and Figure 5The moving mold 200 has a second mounting groove 241, the depth of which is aligned with the thickness of the moving mold 200. A second sealing rod 220 is connected within the second mounting groove 241, and a second elastic element is a second spring 230. The length of the second spring 230 is aligned with the depth of the second mounting groove 241. One end of the second spring 230 is connected to the inner wall of the second mounting groove 241, and the other end is connected to the second sealing rod 220. A second protrusion 221 is connected to one end of the second sealing rod 220. The second protrusion 221 is annular, and its central axis is collinear with the central axis of the second sealing rod 220. The second protrusion 221 is used to contact one end of the nut. The addition of the second protrusion 221 increases the contact area between the second sealing rod 220 and the nut, thereby improving the sealing performance between them.

[0045] Reference Figure 3 and Figure 6 The base 300 slides along the thickness direction of the moving mold 200 and is fitted to the moving mold 200. A sliding rod 310 is connected to the base 300, with its length aligned with the thickness direction of the moving mold 200. One end of the sliding rod 310 is connected to the base 300. A sliding groove 250 is formed on the side of the moving mold 200 near the base 300, with its depth aligned with the thickness direction of the moving mold 200. The end of the sliding rod 310 away from the base 300 slides along its length and is fitted into the sliding groove 250. A limiting groove 251 is formed on the inner wall of the sliding groove 250, with its depth aligned with the depth direction of the sliding groove 250. A stop block 311 is connected to the end of the sliding rod 310 away from the base 300, and the stop block 311 slides along the length of the sliding rod 310 and is fitted into the limiting groove 251.

[0046] Reference Figure 4 and Figure 7 The moving mold 200 is equipped with a molding component 400 for manufacturing the panel undercut structure. The moving mold 200 has a moving groove 260, the depth direction of which is consistent with the thickness direction of the moving mold 200, and the moving groove 260 is connected to the injection molding chamber 110. The molding component 400 includes a side top block 410 and a driving component. The side top block 410 is slidably connected to the inner wall of the moving groove 260 along the length direction of the moving mold 200. The driving component is a guide block 420, one end of which is connected to the base 300, and the other end of which slides along the thickness direction of the moving mold 200 and fits in the moving groove 260. One end of the guide block 420 is provided with a first guide surface 421, which is inclined. The side top block 410 is provided with a second guide surface 411 near the guide block 420, which is also inclined. The first guide surface 421 and the second guide surface 411 are parallel to each other and are in contact with each other.

[0047] Reference Figure 4 and Figure 7 A dovetail groove 422 is formed on one side of the first guide surface 421 of the guide block 420, and the length direction of the dovetail groove 422 is consistent with the extension direction of the first guide surface 421. A dovetail block 412 is connected to one side of the second guide surface 411 of the side top block 410. The length direction of the dovetail block 412 is consistent with the length direction of the dovetail groove 422, and the dovetail block 412 slides along the length direction to fit into the inner wall of the dovetail groove 422. When the moving mold 200 and the fixed mold 100 are closed, the guide block 420 drives the side top block 410 and the moving mold 200 to form the injection space of the panel undercut structure. When the fixed mold 100 and the moving mold 200 are separated, the guide block 420 drives the side top block 410 to disengage from the panel undercut structure. After injection molding, the base 300 moves away from the moving mold 200 by a certain distance, so that the guide block 420 slides into the moving groove 260, thereby driving the side top block 410 away from the undercut structure, thus facilitating the demolding of the product.

[0048] The implementation principle of Embodiment 1 of this application is as follows: In use, the first spring 130 drives the first sealing rod 120 to press against one end of the nut, and the first protrusion 122 presses against one end of the nut. The first protrusion 122 presses against one end of the nut and creates a corresponding groove at one end of the nut. The first protrusion 122 presses against the inner wall of the groove, thereby improving the sealing performance between the nut and the first sealing rod 120. The second spring 230 drives the second sealing rod 220 to press against one end of the nut, and the second protrusion 221 presses against one end of the nut. The second protrusion 221 presses against one end of the nut and creates a corresponding groove at one end of the nut. The second protrusion 221 presses against the inner wall of the groove, thereby improving the sealing performance between the nut and the second sealing rod 220, reducing the possibility of plastic entering the nut, and thus improving product quality.

[0049] Example 2

[0050] The difference between this embodiment and Embodiment 1 is that:

[0051] Reference Figure 8 and Figure 9 The first protrusion 122 is connected to the first sealing rod 120 via the first cylinder 160. The first sealing rod 120 has a first adjusting groove 170, the depth direction of which is consistent with the length direction of the first sealing rod 120. The central axis of the first cylinder 160 is collinear with the central axis of the first protrusion 122, and the first protrusion 122 is connected to the open end of the first cylinder 160. The first cylinder 160 slides along the depth direction of the first sealing rod 120 and is connected to the first adjusting groove 170.

[0052] Reference Figure 8 and Figure 9A first fixing rod 171 is connected inside the first adjusting groove 170. The length direction of the first fixing rod 171 is consistent with the length direction of the first sealing rod 120. The two ends of the length direction of the first fixing rod 171 are respectively connected to the inner walls of the two ends of the first adjusting groove 170. The first cylinder 160 slides along the length direction of the first sealing rod 120 and is sleeved on the first fixing rod 171.

[0053] Reference Figure 8 and Figure 9 The first sealing rod 120 is connected to a first movable component, which is a first bolt 172. The length direction of the first bolt 172 is consistent with the length direction of the first sealing rod 120. One end of the first bolt 172 passes through the support rod 121 and is rotatably connected to the inner wall of the first adjusting groove 170. The first cylinder 160 is threaded onto the first bolt 172.

[0054] Reference Figure 8 and Figure 9 The second protrusion 221 is connected to the second sealing rod 220 via the second cylinder 270. The second sealing rod 220 has a second adjusting groove 280, the depth direction of which is consistent with the length direction of the second sealing rod 220. The central axis of the second cylinder 270 is collinear with the central axis of the second protrusion 221, and the second protrusion 221 is connected to the open end of the second cylinder 270. The second cylinder 270 slides along the depth direction of the second sealing rod and is connected to the second adjusting groove 280.

[0055] Reference Figure 8 and Figure 9 The second adjusting groove 280 is connected to the second fixing rod 281. The length direction of the second fixing rod 281 is consistent with the length direction of the second sealing rod 220. The two ends of the length direction of the second fixing rod 281 are respectively connected to the inner walls of the two ends of the second adjusting groove 280. The second cylinder 270 slides along the length direction of the second sealing rod 220 and is sleeved on the second fixing rod 281.

[0056] Reference Figure 8 and Figure 9 The second sealing rod 220 is connected to a second movable component, which is a second bolt 282. The length direction of the second bolt 282 is consistent with the length direction of the second sealing rod 220. One end of the second bolt 282 passes through the second adjusting groove 280 and is close to the inner wall of one end of the second sealing rod 220. The second bolt 282 is rotatably connected to the inner wall of the second adjusting groove 280. The second cylinder 270 is threaded onto the second bolt 282.

[0057] The implementation principle of Embodiment 2 of this application is as follows: During use, when there is a certain distance between the first protrusion 122 or the second protrusion 221 and the nut, causing the first protrusion 122 or the second protrusion 221 to be unable to abut against the nut, the first bolt 172 is rotated, causing the first cylinder 160 to move along the length direction of the first sealing rod 120, so that the first cylinder 160 and the first protrusion 122 approach the nut and abut against one end of the nut. The second bolt 282 is rotated, causing the second cylinder 270 to move along the length direction of the second sealing rod 220, so that the second cylinder 270 and the second protrusion 221 approach the nut and abut against one end of the nut. This reduces the impact of installation errors on the sealing performance between the first sealing rod 120 and the nut, and improves product quality.

[0058] 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 street light switch housing injection mold, comprising a fixed mold (100) and a moving mold (200), wherein the fixed mold (100) and the moving mold (200) form an injection cavity (110), characterized in that: The fixed mold (100) is provided with a first sealing rod (120), and the moving mold (200) is provided with a second sealing rod (220). The first sealing rod (120) and the second sealing rod (220) are respectively used to contact the two ends of the nut. The first sealing rod (120) is connected to a first elastic element. The first elastic element is used to drive the first sealing rod (120) to move and drive the first sealing rod (120) to abut against the nut. The second sealing rod (220) is connected to a second elastic element. The second elastic element is used to drive the second sealing rod (220) to move and drive the second sealing rod (220) to abut against the nut.

2. The injection mold for a street light switch housing according to claim 1, characterized in that: The first sealing rod (120) has a first protrusion (122) connected to one end, which is used to contact the nut. The second sealing rod (220) has a second protrusion (221) connected to one end, which is used to contact the nut.

3. The injection mold for a street light switch housing according to claim 1, characterized in that: The moving mold (200) is provided with a molding component (400) for manufacturing the panel undercut structure. The molding component (400) includes a side top block (410) and a driving member. The side top block (410) is slidably connected to the moving mold (200). When the moving mold (200) and the fixed mold (100) are closed, the driving member drives the side top block (410) and the moving mold (200) to form the injection space of the panel undercut structure. When the fixed mold (100) and the moving mold (200) are separated, the driving member drives the side top block (410) to separate from the panel undercut structure.

4. The injection mold for a street light switch housing according to claim 3, characterized in that: The moving mold (200) is connected to a base (300) at one end away from the fixed mold (100). The base (300) is slidably fitted to the moving mold (200). The driving component is a guide block (420). The guide block (420) is connected to the base (300) and slidably fitted to the moving mold (200). One end of the guide block is provided with a guide surface. The side top block (410) is slidably fitted to the guide surface. The guide surface is used to guide the side top block (410) away from the undercut structure of the panel.

5. The injection mold for a street light switch housing according to claim 4, characterized in that: The guide surface is provided with a dovetail groove (422), and the side top block (410) is connected to a dovetail block (412) at one end near the guide block (420). The dovetail block (412) slides and fits in the dovetail groove (422).

6. The injection mold for a street light switch housing according to claim 1, characterized in that: The moving mold (200) is connected to a positioning block (240), and the fixed mold (100) has a positioning groove (140). The positioning block (240) is inserted into the fixed mold (100) through the positioning groove (140).

7. The injection mold for a street light switch housing according to claim 2, characterized in that: The first protrusion (122) is connected to the first sealing rod (120) via the first cylinder (160). The first cylinder (160) is slidably connected to the first sealing rod (120). The first sealing rod (120) is connected to a first moving member. The first moving member is used to drive the first protrusion (122) to move and drive the first protrusion (122) closer to the nut. The second protrusion (221) is connected to the second sealing rod (220) via the second cylinder (270). The second cylinder (270) is slidably connected to the second sealing rod (220). The second sealing rod (220) is connected to a second moving member. The second moving member is used to drive the second protrusion (221) to move and drive the second protrusion (221) closer to the nut.

8. The injection mold for a street light switch housing according to claim 7, characterized in that: The first movable component includes a first bolt (172), which is rotatably connected to a first sealing rod (120), and a first cylinder (160) is threaded onto the first bolt (172). The second movable component includes a second bolt (282), which is rotatably connected to a second sealing rod (220), and a second cylinder (270) is threaded onto the second bolt (282).

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