Isolation switch handle injection molding mold

Abstract

The utility model relates to an isolation switch handle injection molding mold which comprises a mold frame, a movable mold plate, a movable mold core, a static mold plate, a static mold core, a panel and a three-time ejection assembly, and a plurality of mold cavities used for handle injection molding are formed between the movable mold core and the static mold core. The third-time ejection assembly comprises an ejection plate, two primary ejection flat rods, a plurality of secondary ejection round rods, a third-time ejection sheet and a cold cutting rod arranged on the ejection plate, and the two primary ejection flat rods act along with the ejection plate, are inserted into the mold cavity in a penetrating mode and abut against one end of the handle; the secondary ejection round rods act along with the ejection plate and abut against the interior of a groove in the middle of the handle, the tertiary ejection piece acts along with the ejection plate and abuts against the other end of the handle, and one end of the cold cutting rod acts along with the ejection plate and is inserted into a runner of the static mold core in a penetrating mode. The utility model has the advantages of simple structure, stable and reliable performance and high production efficiency.

Description

Technical Field

[0001] This utility model relates to an injection molding mold, specifically to an injection molding mold for a disconnect switch handle. Background Technology

[0002] A disconnecting switch is a device that isolates a de-energized part from a energized part, creating a clear disconnect point to isolate faulty equipment or facilitate maintenance during power outages. During electrical equipment maintenance, isolating the equipment from the power source creates a clear disconnect point, preventing safety accidents. Disconnecting switches are widely used in power distribution and automation systems in construction, power, petrochemical, and other industries. A disconnecting switch consists of a housing, operating mechanism, and contact system. In the manufacturing process, the operating mechanism's handle needs to be manufactured using an injection molding mold. Existing injection molding molds for disconnecting switch handles have complex ejection structures, which can easily lead to breakage and deformation of the injection-molded product, compromising product quality stability. Furthermore, these molds also suffer from unreliable performance and low production efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide an injection molding mold for disconnect switch handles that is simple in structure, stable and reliable in performance, and has high production efficiency.

[0004] To achieve the above objectives, this utility model employs an injection molding mold for a disconnect switch handle, comprising a mold frame, a movable mold plate disposed on the mold frame, a movable mold core disposed within the movable mold plate, a stationary mold plate disposed on the movable mold plate, a stationary mold core disposed within the stationary mold plate, a panel disposed on the stationary mold plate, and a three-stage ejection assembly slidably disposed within the mold frame. Multiple mold cavities for injection molding the handle are formed between the movable mold core and the stationary mold core. The three-stage ejection assembly includes a top plate slidably disposed within the mold frame, two primary ejection flat rods symmetrically disposed on the top plate, multiple secondary ejection round rods arranged in a circular array on the top plate, a three-stage ejection plate linked to the top plate, and a cold-cutting rod disposed on the top plate. The two primary ejection flat rods move with the top plate and are inserted into the mold cavity, abutting against one end of the handle. The multiple secondary ejection round rods move with the top plate and abut against the groove in the middle of the handle. The three-stage ejection plate moves with the top plate and abuts against the other end of the handle. One end of the cold-cutting rod moves with the top plate and is inserted into the flow channel of the stationary mold core.

[0005] The beneficial effects of the above structure are as follows: The three-ejection assembly of this injection molding mold adopts a three-ejection structure design, which achieves smooth demolding of the isolating switch handle through two primary ejection flat rods, multiple secondary ejection round rods, and a tertiary ejection plate, avoiding problems such as handle breakage and deformation, thereby improving production efficiency and product quality. Furthermore, the three-ejection assembly adopts a modular structure design, making assembly more convenient. Therefore, this injection molding mold has the advantages of simple structure, stable and reliable performance, and high production efficiency.

[0006] Specifically, a backing plate is provided on one side of the top plate, and multiple guide rods are arranged in a rectangular array on the backing plate. These guide rods pass through the top plate and are inserted into guide holes in the moving mold plate. Each guide rod is fitted with a multiple return spring, and the two ends of each return spring abut against the top plate and the moving mold plate, respectively. The return springs ensure that the top plate and backing plate can reliably return to their original positions, thereby ensuring the reliable operation of the three-ejection assembly and improving the working reliability of the injection molding mold.

[0007] Specifically, the stationary template is rotatably equipped with a locking element, and the moving template is equipped with a locking bolt that mates with the locking element. The locking element is equipped with a locking groove that mates with the locking bolt. The locking groove engages with the locking bolt, forming a snap-fit ​​connection between the locking bolt and the locking element. During mold closing, the stationary template is locked with the locking bolt on the moving template via the locking element, thereby ensuring more reliable mold closing of the injection molding die.

[0008] Specifically, the stationary mold plate is provided with a sprue cup, one end of which extends into the injection hole of the stationary mold core. The panel is provided with a through hole that communicates with the other end of the sprue cup, and a positioning ring is provided on the panel corresponding to the through hole. The positioning ring of the panel can be engaged with the injection molding machine, thereby facilitating the installation of the injection molding mold and the injection molding machine, making installation more convenient.

[0009] Specifically, the panel facing the stationary template has multiple positioning grooves arranged in a rectangular array, and multiple compression springs are respectively arranged between the multiple positioning grooves and the stationary template. The multiple compression springs between the panel and the stationary template can increase the pressure on the stationary template, thereby ensuring more reliable mold closing between the stationary template and the moving template. Attached Figure Description

[0010] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0011] Figure 2 This is a cross-sectional view of an embodiment of the present utility model.

[0012] Figure 3 This is an exploded view of an embodiment of the present utility model. Detailed Implementation

[0013] like Figures 1-3 As shown, this utility model embodiment is an injection molding mold for a disconnect switch handle, including a mold frame 10, a movable template 11 disposed on the mold frame 10, a movable mold core 12 disposed within the movable template 11, a stationary template 13 disposed on the movable template 11, a stationary mold core 14 disposed within the stationary template 13, a panel 15 disposed on the stationary template 13, and a three-stage ejection assembly 20 slidably disposed within the mold frame 10. Multiple mold cavities 100 for injection molding a handle 16 are formed between the movable mold core 12 and the stationary mold core 14. The three-stage ejection assembly 20 includes a top plate 21 slidably disposed within the mold frame 10, and two... The top plate 21 has two primary ejector flat rods 22, multiple secondary ejector round rods 23 arranged in a ring on the top plate 21, a tertiary ejector plate 24 linked to the top plate 21, and a cold-cutting rod 25. The two primary ejector flat rods 22 move with the top plate 21 and are inserted into the mold cavity 100 and abut against one end of the handle 16. The multiple secondary ejector round rods 23 move with the top plate 21 and abut against the groove in the middle of the handle 16. The tertiary ejector plate 24 moves with the top plate 21 and abuts against the other end of the handle 16. One end of the cold-cutting rod 25 moves with the top plate 21 and is inserted into the flow channel 141 of the stationary mold core 14. A backing plate 26 is provided on one side of the top plate 21. Multiple guide rods 27 are arranged in a rectangular array on the backing plate 26. These guide rods 27 pass through the top plate 21 and are inserted into guide holes 111 in the moving template 11. Each guide rod 27 is fitted with a multiple return spring 28, with both ends of the return springs abutting against the top plate 21 and the moving template 11. The return springs ensure reliable reset of the top plate and backing plate, thereby ensuring reliable operation of the three-ejection assembly and improving the working reliability of the injection molding mold.

[0014] like Figure 1 As shown, a locking element 17 is rotatably mounted on the static template 13, and a locking bolt 18 that mates with the locking element 17 is mounted on the moving template 11. The locking element 17 has a locking groove 171 that mates with the locking bolt 18. The locking groove 171 engages with the locking bolt 18, forming a snap-fit ​​connection between the locking bolt 18 and the locking element 17. During mold closing, the static template is locked to the moving template by the locking element and the locking bolt, thus ensuring more reliable mold closing of the injection molding die.

[0015] like Figure 2 and 3As shown, a sprue cup 19 is provided on the stationary mold plate 13, with one end of the sprue cup 19 extending into the injection hole of the stationary mold core 13. A through hole 151 is provided on the panel 15, communicating with the other end of the sprue cup 19. A positioning ring 152 is provided on the panel 15 corresponding to the through hole 151. The positioning ring of the panel can engage with the injection molding machine, facilitating the installation of the injection mold and the injection molding machine, making installation more convenient. Multiple positioning grooves are arranged in a rectangular array on the side of the panel 15 facing the stationary mold plate 13, and multiple compression springs 153 are respectively provided between the multiple positioning grooves and the stationary mold plate 13. The multiple compression springs between the panel and the stationary mold plate increase the pressure on the stationary mold plate, thereby ensuring more reliable mold closing between the stationary and moving mold plates.

[0016] The injection mold's three-ejection assembly employs a three-ejection structure design. Through two primary ejector flat rods, multiple secondary ejector round rods, and a tertiary ejector plate, the isolating switch handle is smoothly demolded, preventing handle damage and deformation, thereby improving production efficiency and product quality. Furthermore, the three-ejection assembly utilizes a modular design, making assembly more convenient. Therefore, this injection mold boasts advantages such as simple structure, stable and reliable performance, and high production efficiency.

Claims

1. A mold for injection molding a disconnect switch handle, characterized in that: The device includes a mold base, a moving mold plate mounted on the mold base, a moving mold core mounted within the moving mold plate, a stationary mold plate mounted on the moving mold plate, a stationary mold core mounted within the stationary mold plate, a panel mounted on the stationary mold plate, and a three-stage ejection assembly slidably mounted within the mold base. Multiple mold cavities for injection molding a handle are formed between the moving mold core and the stationary mold core. The three-stage ejection assembly includes a top plate slidably mounted within the mold base, two primary ejection flat rods symmetrically mounted on the top plate, multiple secondary ejection round rods arranged in a circular array on the top plate, a three-stage ejection plate linked to the top plate, and a cold-cutting rod mounted on the top plate. The two primary ejection flat rods move with the top plate, penetrate the mold cavity, and abut against one end of the handle. The multiple secondary ejection round rods move with the top plate and abut against a groove in the middle of the handle. The three-stage ejection plate moves with the top plate and abuts against the other end of the handle. One end of the cold-cutting rod moves with the top plate and penetrates the flow channel of the stationary mold core.

2. The injection molding mold for the disconnect switch handle according to claim 1, characterized in that: A backing plate is provided on one side of the top plate. Multiple guide rods are arranged in a rectangular array on the backing plate. The multiple guide rods pass through the top plate and are inserted into the guide holes of the moving template. Multiple return springs are respectively fitted on the multiple guide rods. The two ends of the multiple return springs abut against the top plate and the moving template, respectively.

3. The injection molding mold for the disconnect switch handle according to claim 1 or 2, characterized in that: The static template is rotatably equipped with a locking element, the moving template is equipped with a locking bolt that cooperates with the locking element, the locking element is equipped with a locking groove that cooperates with the locking bolt, the locking groove is engaged with the locking bolt, and a snap-fit ​​engagement is formed between the locking bolt and the locking element.

4. The injection molding mold for the disconnect switch handle according to claim 1 or 2, characterized in that: The stationary mold plate is provided with a sprue cup, one end of which extends into the injection hole of the stationary mold core. The panel is provided with a through hole that communicates with the other end of the sprue cup, and a positioning ring is provided on the panel corresponding to the through hole.

5. The injection molding mold for the disconnect switch handle according to claim 1 or 2, characterized in that: The panel facing the stationary template has multiple positioning grooves arranged in a rectangular array, and multiple compression springs are respectively arranged between the multiple positioning grooves and the stationary template.

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