A glue feeding structure at the bottom of a row position

Abstract

The utility model relates to the field of mould structure discloses a kind of row position bottom glue feeding structure, comprising: rear mould kernel;Row position, install on the rear mould kernel, the row position is set as can be linearly moved on rear mould kernel;Runner, install on the rear mould kernel, the runner is at least partially embedded and set in the bottom of row position, and runner and the gate of row position bottom are communicated;Shovel machine, being set in the upper of rear mould kernel, the shovel machine is set as when being away from rear mould kernel, row position moves on rear mould kernel and separates from water port.The utility model in the middle, by runner at least partially embedding row position bottom, the path of glue from runner to cavity is shorter, reduces flow resistance, reduces pressure loss, so that glue can more smoothly fill cavity, so that glue is more stable when filling cavity pressure, help to improve the quality of product forming.

Description

Technical Field

[0001] This utility model relates to the field of mold structure, and in particular to a bottom injection structure for a slide. Background Technology

[0002] In injection molding, the mold's injection structure plays a crucial role in the quality of plastic products. Currently, surface injection is widely used in mold design, with submersible injection and dot injection being two common forms.

[0003] Submersible gates, with their gates located below the parting line, introduce the material into the mold cavity through a submarine gate. Because the material must pass through a bent and small gate to enter the cavity, the resistance to flow is significantly increased, requiring higher injection pressure to ensure proper filling. Submersible gates are typically designed to be extremely narrow, resulting in a sharp increase in pressure drop as the material enters the cavity, highlighting pressure loss issues. To achieve complete cavity filling, it is often necessary to increase the injection pressure, placing higher demands on mold strength and equipment performance.

[0004] Existing glue injection structures suffer from pressure loss, which affects material flow and filling effect, leading to product defects. Furthermore, glue injection requires breaking the glue nozzle, which can easily leave marks on the product surface and affect its appearance. Utility Model Content

[0005] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0006] A bottom-gating structure for a slide includes: a rear mold core; a slide mounted on the rear mold core, the slide being configured to move linearly on the rear mold core; a runner mounted on the rear mold core, the runner being at least partially embedded in the bottom of the slide and communicating with a gate at the bottom of the slide; and a shovel disposed above the rear mold core, the shovel being configured to move the slide on the rear mold core and disengage from the gate when it moves away from the rear mold core.

[0007] Preferably, the shovel includes: an inclined guide post, which is installed on the shovel, and the slide is provided with an inclined hole that cooperates with the inclined guide post. The inclined guide post cooperates with the inclined hole, and when the shovel moves relative to the rear mold core, the slide moves on the rear mold core by sliding the inclined guide post in the inclined hole.

[0008] Preferably, it further includes: a front mold core, installed above the rear mold core, and the shovel is installed on the front mold core.

[0009] Preferably, the rear mold core includes a retraction groove formed on the rear mold core, and the slide is connected in the retraction groove.

[0010] Preferably, it further includes: a rear mold blank, on which a groove is formed, and the rear mold core is installed in the groove; and two spacers, which are installed at the bottom of the rear mold blank.

[0011] Preferably, the spacer plate includes: an ejector base plate, installed between two spacer plates; an ejector panel, installed on top of the ejector base plate; and a demolding ejector pin, disposed on the ejector panel, the demolding ejector pin penetrating the rear mold blank.

[0012] Preferably, the ejector plate includes: a mounting groove formed on the ejector plate; a secondary top plate installed in the mounting groove, wherein the demolding ejector pin is installed on the secondary top plate; and an electromagnetic actuator installed in the mounting groove, wherein the electromagnetic actuator is connected to the secondary top plate.

[0013] Preferably, a guide rail is installed in the retraction groove, and the slide position is slidably connected to the guide rail via a slider.

[0014] This invention provides a bottom-feeding structure for the slide. Compared with the prior art, it has the following advantages: by embedding the flow channel at least partially into the bottom of the slide, the path of the adhesive from the flow channel to the cavity is shorter, reducing flow resistance and pressure loss, allowing the adhesive to fill the cavity more smoothly, and making the pressure of the adhesive more stable when filling the cavity, which helps to improve the quality of product molding. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram from another perspective of the present invention.

[0017] Figure 3 This is an exploded view of the rear mold blank and the front mold core proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the spacer plate, ejector base plate, ejector panel, and sub-top plate structure proposed in this utility model.

[0019] Figure 5 This is a schematic diagram of the cross-section of the ejector plate proposed in this utility model.

[0020] The attached figures are labeled as follows: 100. Rear mold blank; 101. Groove; 102. Rear mold core; 103. Recessing groove; 200. Front mold core; 201. Shovel; 202. Angled guide post; 300. Partition plate; 301. Ejector pin base plate; 302. Ejector pin face plate; 303. Demolding ejector pin; 304. Secondary ejector plate; 305. Electromagnetic actuator; 306. Mounting slot; 400, row position; 401, flow channel. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0023] Reference Figures 1-5 A bottom-gating structure for a sliding block includes: a rear mold core 102; a sliding block 400 mounted on the rear mold core 102, the sliding block 400 being configured to move linearly on the rear mold core 102; a runner 401 mounted on the rear mold core 102, the runner 401 being at least partially embedded in the bottom of the sliding block 400, and the runner 401 communicating with a gate at the bottom of the sliding block 400; and a shovel 201 disposed above the rear mold core 102, the shovel 201 being configured to move the sliding block 400 on the rear mold core 102 and disengage from the gate when the shovel moves away from the rear mold core 102.

[0024] In this embodiment, the rear mold core 102 is a crucial foundational component of the entire mold structure. It not only provides mounting support for components such as the slide 400 and runner 401, but also works with the front mold core 200 to construct the product cavity during the molding process. A recess groove 103 is specifically provided on the rear mold core 102. This groove provides space and guidance for the movement of the slide 400. A guide rail is installed within the groove, and the guide rail and slide 400 are slidably connected via a slider. This design allows the slide 400 to move smoothly and precisely in a straight line on the rear mold core 102, ensuring that the slide 400 moves along a predetermined trajectory during mold opening and closing, creating conditions for smooth sprue removal and product molding and demolding.

[0025] The slide block 400 is installed in the ejector groove 103 of the rear mold core 102, and can move linearly through the cooperation of the slider and the guide rail. The key function of the slide block 400 lies in its special connection design between its bottom and the runner 401 and the gate. The runner 401 is at least partially embedded in the bottom of the slide block 400, and the runner 401 is interconnected with the gate at the bottom of the slide block 400. During the injection molding process, the plastic material enters the product cavity from the runner 401 through the gate, and the slide block 400 plays an important role in guiding the plastic material into the cavity and disengaging from the gate during the demolding stage. When the mold opens, the slide block 400 moves backward under the action of the ejector 201, thereby disengaging from the gate and facilitating the ejection of the gate and the product.

[0026] The design of the runner 401, which is mounted on the rear mold core 102 and is at least partially embedded in the bottom of the slide 400, is one of the innovations of this injection structure. This design allows the molten material to be delivered more directly and efficiently from the runner 401 to the gate at the bottom of the slide 400, and then into the product cavity. The bottom injection structure of the slide 400 shortens the melt flow path (compared to the path of traditional point injection which requires penetration of the mold core), reducing flow resistance. Simultaneously, moving the injection point to a concealed area at the bottom of the product fundamentally avoids surface scars. The slide 400's retraction demolding mechanism automatically cuts off the gate, eliminating stress marks caused by the breakage of traditional point gates. Controlling the clearance between the mold core and the slide 400 effectively prevents air bubbles.

[0027] The shovel 201 is positioned above the rear mold core 102 and mounted on the front mold core 200. An inclined guide post 202 is installed on the shovel 201, which engages with an inclined hole on the slide 400. When the mold opens, the front mold core 200 drives the shovel 201 upwards. At this time, the inclined guide post 202 slides within the inclined hole. Due to the special angle design between the inclined guide post 202 and the inclined hole, this relative motion is converted into a linear movement of the slide 400 behind the rear mold core 102, thus allowing the slide 400 to disengage from the sprue. This design of the shovel 201 cleverly utilizes the movement of the front mold core 200 during mold opening. Through the mechanical transmission between the inclined guide post 202 and the inclined hole, the movement of the slide 400 is precisely controlled, ensuring smooth separation of the sprue from the slide 400 and laying the foundation for subsequent demolding processes.

[0028] The shovel 201 includes: an inclined guide post 202, which is installed on the shovel 201. The slide 400 is provided with an inclined hole that cooperates with the inclined guide post 202. The inclined guide post 202 cooperates with the inclined hole. When the shovel 201 moves relative to the rear mold core 102, the slide 400 is driven to move on the rear mold core 102 by sliding the inclined guide post 202 in the inclined hole.

[0029] The front mold core 200 is installed above the rear mold core 102, and the shovel 201 is installed on the front mold core 200.

[0030] The front mold core 200 is installed above the rear mold core 102, and together with the rear mold core 102, they form the cavity of the mold, used to shape the product's outline. Simultaneously, the front mold core 200 also plays a crucial role in driving the movement of the shovel 201. During mold opening and closing, the movement of the front mold core 200 is transmitted to the shovel 201 through its connection with it, thereby driving the shovel 201 to move the slide 400. The coordinated work of the front mold core 200, the rear mold core 102, the shovel 201, and other components ensures the normal operation of the entire mold in all stages, including injection molding, mold opening, and demolding, making it one of the key components for achieving efficient and high-quality product molding.

[0031] The rear mold core 102 includes: a retraction groove 103, which is formed on the rear mold core 102, and the slide 400 is connected in the retraction groove 103; a guide rail is installed in the retraction groove 103, and the slide 400 is slidably connected to the guide rail by a slider.

[0032] It also includes: a rear mold blank 100, on which a groove 101 is provided, and the rear mold core 102 is installed in the groove 101; and two spacer plates 300, which are installed at the bottom of the rear mold blank 100.

[0033] The rear mold blank 100 has a groove 101, within which the rear mold core 102 is installed. The rear mold blank 100 provides a stable mounting base for the rear mold core 102, enhancing the strength and stability of the entire mold structure. Simultaneously, the rear mold blank 100 plays a role in connecting and supporting other components within the overall mold structure. The rational design and application of the rear mold blank 100 make the entire mold structure more compact and stable, capable of withstanding the high pressure and mechanical impact during injection molding, ensuring the long-term stable operation of the mold.

[0034] The spacer plate 300 includes: an ejector base plate 301, installed between two spacer plates 300; an ejector panel 302, installed on top of the ejector base plate 301; and a demolding ejector pin 303, disposed on the ejector panel 302, the demolding ejector pin 303 penetrating the rear mold blank 100. The ejector panel 302 includes: a mounting groove 306, formed on the ejector panel 302; a secondary ejector plate 304, installed in the mounting groove 306, the demolding ejector pin 303 installed on the secondary ejector plate 304; and an electromagnetic actuator 305, installed in the mounting groove 306, the electromagnetic actuator 305 being connected to the secondary ejector plate 304.

[0035] During the mold demolding stage, the ejector base plate 301 and ejector panel 302 move upward under the action of external power (such as the ejection device of the injection molding machine), driving the demolding ejector pin 303 to eject the product and sprue from the mold cavity.

[0036] The function of the secondary ejector plate 304 is to transmit the driving force of the electromagnetic actuator 305 to the ejector pin 303, and at the same time adjust the movement direction and force of the ejector pin 303 to a certain extent. Through the connection of the secondary ejector plate 304, the electromagnetic actuator 305 can more effectively control the movement of the ejector pin 303, and achieve precise control of the product demolding process. As a controllable power source, the electromagnetic actuator 305 can first drive the secondary ejector plate 304 and the ejector pin 303 to move when the mold is opened, complete the 0.1s pre-ejection, and precisely control the movement of the secondary ejector plate 304, thereby driving the ejector pin 303 to achieve different ejection actions. Subsequently, the ejector plate 302 continues to drive the ejector pin 303 to move and complete the product separation.

[0037] During operation, the injection molding machine injects the plastic material into the runner 401 mounted on the rear mold core 102. Since the runner 401 is at least partially embedded in the bottom of the slide 400 and connected to the gate at the bottom of the slide 400, the plastic material can smoothly enter the product cavity from the runner 401 through the gate with a shorter path and lower pressure loss. This injection method shortens the melt flow path and reduces flow resistance, offering significant advantages compared to traditional point injection which requires penetrating the mold core. Simultaneously, the injection point is located in a concealed area at the bottom of the product, fundamentally avoiding surface defects.

[0038] The mold begins to open, and the front mold core 200 drives the shovel 201 mounted on it to move upward. The inclined guide post 202 on the shovel 201 engages with the inclined hole on the slide 400. Due to the special angle design of the inclined guide post 202 and the inclined hole, the upward movement of the shovel 201 is converted into a linear movement of the slide 400 behind the rear mold core 102. During the rearward movement, the slide 400 gradually disengages from the sprue, completing the separation of the sprue from the slide 400, creating conditions for the subsequent demolding process.

[0039] During mold opening, the electromagnetic actuator 305, acting as a controllable power source, is activated first, driving the secondary ejector plate 304 and the ejector pin 303 to move, completing a 0.1s pre-ejection. The secondary ejector plate 304 transmits the driving force of the electromagnetic actuator 305 to the ejector pin 303, while simultaneously adjusting the direction and force of the ejector pin 303's movement to a certain extent, thereby achieving precise control over the product demolding process.

[0040] The ejector base plate 301 and ejector plate 302 move upward under the action of external power such as the ejection device of the injection molding machine. Since the ejector pin 303 is mounted on the ejector plate 302 and passes through the rear mold blank 100, the upward movement of the ejector plate 302 drives the ejector pin 303 to continue ejecting the product and sprue from the mold cavity. The electromagnetic actuator 305 continuously and precisely controls the movement of the secondary ejector plate 304, thereby driving the ejector pin 303 to achieve different ejection actions, ensuring that the product is smoothly separated from the mold cavity, completing the entire demolding process, and improving the production efficiency and quality of the product.

[0041] In summary, compared with existing technologies, it has the following beneficial effects: By embedding the flow channel 401 at least partially into the bottom of the slide 400, the path of the rubber material from the flow channel 401 to the cavity is shorter, reducing flow resistance and pressure loss, allowing the rubber material to fill the cavity more smoothly, resulting in more stable pressure when the rubber material fills the cavity, which helps to improve the quality of product molding.

[0042] This solution moves the injection point to the bottom area of ​​the product, eliminating the problem of scars on the visible surface of the product caused by injection. The 400mm retraction demolding mechanism automatically cuts off the gate, preventing stress marks and further improving the smoothness and aesthetics of the product surface.

[0043] The electromagnetic actuator 305 first drives the secondary top plate 304 and the demolding pin 303 to complete the pre-ejection, and precisely controls the movement of the secondary top plate 304 to drive the demolding pin 303 to achieve different ejection actions, which can better adapt to the demolding requirements of different products.

[0044] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A bottom-feed adhesive structure for a sliding position, characterized in that, include: Post-modalin (102); A slide (400) is mounted on the rear mold core (102), and the slide (400) is configured to move linearly on the rear mold core (102); A runner (401) is installed on the rear mold core (102), and the runner (401) is at least partially embedded in the bottom of the slide (400), and the runner (401) is connected to the gate at the bottom of the slide (400); A shovel (201) is positioned above the rear mold core (102). The shovel (201) is configured to move away from the rear mold core (102) and move the slide (400) on the rear mold core (102) and disengage from the sprue.

2. The bottom glue inlet structure according to claim 1, characterized in that, The shovel (201) includes: An inclined guide post (202) is installed on the shovel (201). The slide (400) is provided with an inclined hole that cooperates with the inclined guide post (202). The inclined guide post (202) cooperates with the inclined hole. When the shovel (201) moves relative to the rear mold core (102), the slide (400) moves on the rear mold core (102) by sliding the inclined guide post (202) in the inclined hole.

3. The bottom glue inlet structure according to claim 1, characterized in that, Also includes: The front mold core (200) is installed above the rear mold core (102), and the shovel (201) is installed on the front mold core (200).

4. The bottom glue inlet structure according to claim 1, characterized in that, The rear mold core (102) includes: The retraction groove (103) is formed on the rear mold core (102), and the slide (400) is connected in the retraction groove (103).

5. The bottom glue inlet structure according to claim 1, characterized in that, Also includes: A rear mold blank (100) is provided with a groove (101), and the rear mold core (102) is installed in the groove (101); Two spacers (300) are installed at the bottom of the rear mold blank (100).

6. The bottom glue inlet structure according to claim 5, characterized in that, The spacer plate (300) includes: The ejector base plate (301) is installed between two spacer plates (300); The ejector plate (302) is mounted on top of the ejector base plate (301); A demolding ejector pin (303) is disposed on the ejector pin panel (302), and the demolding ejector pin (303) penetrates the rear mold blank (100).

7. The bottom glue inlet structure according to claim 6, characterized in that, The ejector plate (302) includes: The mounting slot (306) is provided on the ejector plate (302); A secondary top plate (304) is installed in the mounting groove (306), and the ejector pin (303) is installed on the secondary top plate (304); An electromagnetic actuator (305) is installed in the mounting slot (306) and is connected to the sub-top plate (304).

8. The bottom glue inlet structure according to claim 4, characterized in that, The retraction groove (103) is equipped with a guide rail, and the slide position (400) is slidably connected to the guide rail by a slider.

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