A mold with a front mold slide automatic ejection mechanism

Abstract

This utility model relates to a mold with an automatic pop-out mechanism for the front mold slider, comprising a front mold and a rear mold. The front mold contains a pop-out mechanism, which includes a fixed block fixed within the front mold, a guide block formed on the fixed block, and at least one pair of sliders moving along the guide block. Each slider has a groove at its front end. The pair of sliders can move relative to each other or in opposite directions, and the groove forms a mold cavity as the sliders move relative to each other. The pop-out mechanism includes a reset member, which is elastic and has two ends that abut against the front mold and the sliders respectively. The rear mold contains a shaft mold that extends into or retracts from the groove. By placing the slider mechanism in the front mold, the automatic pop-out of the slider at the moment of mold opening is achieved using a reset spring and an inclined guide rail, avoiding damage and scratches to the product and improving finished product quality and yield. Simultaneously, the slider mechanism is independent of the rear mold, resulting in a more optimized structure. Its movement stroke is unrestricted and highly synchronized, effectively reducing the risk of slider jamming and wear, and extending the mold's service life.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and more particularly to a mold with an automatic pop-out mechanism for the front mold slider. Background Technology

[0002] In the field of injection molds, for plastic products with complex lateral cavities or irregular surfaces, a slider mechanism is usually required to achieve product molding and demolding.

[0003] Traditional molds typically place the slider mechanism on the rear mold side, relying on the ejection components or angled guide pillars during the mold opening stage to drive the slider for lateral core pulling. However, for the aforementioned PET pen holder-type products, the rear mold slider mechanism has significant drawbacks: Firstly, since the product is made of soft material, uneven ejection force or slider movement interference during rear mold ejection can easily cause the product to crush or scratch the slider, resulting in surface defects and wear on mold parts. Secondly, the movement stroke of the rear mold slider is limited by the space of the rear mold ejection system, making it difficult to adapt to the deep cavity lateral molding requirements of pen holder-type products. Furthermore, the synchronization of the slider driven by traditional angled guide pillars is poor, and jamming can easily occur during mold opening and closing, affecting production continuity.

[0004] Therefore, it is necessary to develop a mold with an automatic pop-out mechanism for the front mold slider to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a mold with an automatic pop-out mechanism for the front mold slider that reduces product tearing and mold wear.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold with an automatic pop-out mechanism for the front mold slider, comprising a front mold and a rear mold;

[0007] The front mold is provided with an ejection mechanism, which includes several fixed blocks fixed in the front mold, guide blocks formed on the fixed blocks and arranged obliquely, and at least one pair of sliders that move along the guide blocks. The front end of the sliders is provided with a groove. The pair of sliders move relative to each other or in opposite directions. The grooves move relative to each other with the sliders to form a mold cavity.

[0008] The ejection mechanism includes an obliquely arranged reset member, which is elastic and has two ends that respectively abut against the front mold and the slider;

[0009] The rear mold is provided with a shaft mold, which extends into or retracts from the groove.

[0010] Furthermore, the front mold is provided with a flow guiding component, which includes a support. The support has a flow tube penetrating its upper and lower surfaces and a recessed groove forming an anti-cavity groove from the surface inward. The flow tube communicates with the anti-cavity groove, the slider moves within the anti-cavity groove, and the groove communicates with the flow tube when the mold is closed.

[0011] Furthermore, the flow guiding component includes a first flow channel plate and a second flow channel plate. The second flow channel plate has a flow channel groove and a main flow channel. The flow channel groove fits into the bracket. The top of the main flow channel is connected to the injection port provided in the front mold, and the bottom is connected to the flow channel groove.

[0012] Furthermore, the reset component includes a fixing bolt and a spring. The fixing bolt fixes the position of the spring, one end of the spring abuts against the slider, and the other end abuts against the front mold.

[0013] Furthermore, the fixed block and the slider are configured as two sets, respectively located on both sides of the flow guiding component, and the two sets of sliders can move relative to or away from each other along the guide block.

[0014] Furthermore, the bracket is recessed inward from both sides to form the clearance groove, which penetrates the lower surface of the bracket.

[0015] Furthermore, the tilting direction of the guide block is the same as the arrangement direction of the reset member.

[0016] Furthermore, the first flow channel plate and the second flow channel plate are attached to each other, so that the flow channel grooves form a closed flow channel space.

[0017] Furthermore, the front mold and the rear mold drive the slider to close and open through the mold opening and closing action.

[0018] Furthermore, the groove shape of the slider matches the side surface shape of the product to be formed.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model is a mold with an automatic pop-out mechanism for the front mold slider, which has the characteristics of reducing product scratches and mold wear. By setting the slider mechanism in the front mold and using a return spring and inclined guide rail to realize the automatic and priority lateral pop-out of the slider at the moment of mold opening, the soft material product is completely freed from lateral constraints before ejection, thereby completely avoiding the crushing and scratching of the product caused by the traditional rear mold slider during the ejection process, and significantly improving the quality and yield of the finished product. At the same time, the front mold slider mechanism is independent of the rear mold, the structure is more optimized, its movement stroke is unrestricted and the synchronization is high, effectively reducing the risk of slider jamming and wear, and extending the service life of the mold. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a mold with an automatic pop-out mechanism for the front mold slider according to the present invention.

[0022] Figure 2 for Figure 1 A partial structural schematic diagram of a mold with an automatic front mold slider opening mechanism is shown.

[0023] Figure 3 for Figure 2 The exploded view of a portion of the mold structure shown is of a front mold slider with an automatic spring-off mechanism.

[0024] Figure 4 for Figure 1 The diagram shows another partial structural schematic of the mold with an automatic pop-out mechanism for the front mold slider.

[0025] In the diagram: 1. Front mold; 2. Rear mold; 11. Front mold fixing plate; 12. Stripper plate; 13. Front template; 14. Injection port; 15. Flow guide assembly; 151. First runner plate; 152. Second runner plate; 153. Runner groove; 154. Bracket; 155. Clearance groove; 156. Flow tube; 157. Main runner; 3. Pop-up mechanism; 31. Fixing block; 32. Slider; 321. Guide groove; 322. Molding groove; 33. Reset component; 331. Fixing bolt; 332. Spring; 34. Guide block; 21. Rear mold fixing plate; 22. Rear template; 23. Shaft mold. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the mold with an automatic front mold slider opening mechanism proposed according to this utility model. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] The following description, in conjunction with the accompanying drawings, details the specific solution of the mold with an automatic pop-out mechanism for the front mold slider provided by this utility model.

[0029] Please refer to Figures 1 to 4 This utility model is a mold with an automatic pop-out mechanism for the front mold slider, which includes a front mold 1 and a rear mold 2.

[0030] The front mold 1 includes a front mold fixing plate 11, a stripping plate 12, and a front template 13 connected in sequence.

[0031] Please refer to Figures 1 to 2 The front mold fixing plate 11 has an injection port 14. The stripper plate 12 and the front mold plate 13 are provided with a flow guiding component 15 inside. The flow guiding component 15 includes a first flow channel plate 151 and a second flow channel plate 152. The first flow channel plate 151 is located inside the stripper plate 12, and the second flow channel plate 152 is located inside the front mold plate 13. The second flow channel plate 152 has a flow channel groove 153, which is recessed inward from the side opposite to the first flow channel plate 151. The second flow channel plate 152 and the first flow channel plate 151 fit together to form a complete branch channel.

[0032] Please refer to Figures 2 to 3 The second flow channel plate 152 is fitted with a bracket 154, which is fixed inside the front template 13, with its bottom exposed on the lower surface of the front template 13. The bracket 154 also has recesses from both sides forming clearance grooves 155, which penetrate the lower surface of the bracket 154 and are also exposed on the lower surface of the front template 13. The bracket 154 has a flow tube 156, which penetrates the bracket 154, with one end connected to the flow channel 153 and the other end extending into the clearance groove 155.

[0033] Specifically, the second runner plate 152 has a main runner 157 that runs through its upper and lower surfaces. The top of the main runner 157 is connected to the injection port 14, and the bottom is connected to the runner groove 153.

[0034] Please refer to Figure 4 The front mold 1 is provided with an ejection mechanism 3, which is located on both sides of the flow guide assembly 15. Specifically, the ejection mechanism 3 includes several fixed blocks 31, several sliders 32 respectively disposed between the fixed blocks 31, and a reset member 33 that abuts against the sliders 32.

[0035] Several fixing blocks 31 are divided into two groups. The two groups of fixing blocks 31 are respectively fixed inside the front template 13 and located on both sides of the bracket 154, abutting against the bracket 154. A certain distance is maintained between each group of fixing blocks 31 to accommodate the slider 32. Specifically, a guide block 34 is formed on the opposite side of each group of fixing blocks 31. The guide block 34 is arranged obliquely, with one end close to the bracket 154 and the other end away from the bracket 154.

[0036] A slider 32 is installed between each set of fixed blocks 31. The slider 32 is recessed inward from both sides to form a guide groove 321. The guide groove 321 is arranged obliquely, and the guide block 34 extends into the guide groove 321. The slider 32 moves along the guide block 34 through the guide groove 321. The front end of the slider 32 is located in the clearance groove 155, and it has a groove 322 recessed inward from the front end surface. The shape of the groove 322 matches the surface shape of the product. The sliders 32 installed between each pair of fixed blocks 31 move relative to each other or in opposite directions along the guide block 34. When the relative movement and mold closing occur, the groove 322 forms a complete cavity and communicates with the flow tube 156.

[0037] The reset component 33 includes a fixing bolt 331 and a spring 332. Both the fixing bolt 331 and the spring 332 are arranged obliquely, and their inclination direction is the same as that of the guide block 34. The fixing bolt 331 fixes the position of the spring 332. One end of the spring 332 abuts against the slider 32, and the other end abuts against the front template 13.

[0038] The rear mold 2 includes a rear mold fixing plate 21 and a rear template 22 fixedly connected to the rear mold fixing plate 21.

[0039] The rear template 22 is provided with several shaft molds 23, which can extend into or exit the groove 322 formed by the slider 32, and together with the groove 322, they form a complete mold cavity.

[0040] When using the mold with an automatic pop-out mechanism for the front mold slider of this utility model, the front mold 1 and the rear mold 2 close together. During this process, the shaft mold 23 on the rear mold plate 22 is precisely inserted into the groove 322 formed at the front end of the front mold slider 32, together forming a complete mold cavity for the molded product. At the same time, the two sets of sliders 32 in the front mold slide relative to each other along the inclined guide block 34 on the fixed block 31 under the action of the mold closing force, and finally close completely. The groove 322 part of it also forms part of the mold cavity. After the mold is closed, molten plastic is injected from the injection nozzle of the injection molding machine through the injection port 14 of the front mold fixed plate 11. The plastic passes through the main runner 157, the runner groove 153 formed by the first runner plate 151 and the second runner plate 152, and the lower end of the main runner 157 on the second runner plate 152 in sequence, and finally enters the mold cavity surrounded by the groove 322 of the slider 32 and the shaft mold 23 of the rear mold through the flow pipe 156 on the bracket 154, completing the filling. The plastic cools and solidifies in the mold cavity to form the product.

[0041] During mold opening, several sliders 32 lose their restraint, and in this process, the energy stored in the compressed springs 332 begins to be released. The springs 332 push the sliders 32 they hold, causing them to slide to both sides along the track of the inclined guide block 34 on the fixed block 31. When the sliders 32 have fully springed open and retracted, the molded product is released from the lateral enclosure and can be removed.

[0042] This utility model relates to a mold with an automatic front mold slider opening mechanism, which reduces product scratches and mold wear. By setting the slider mechanism in the front mold and using a return spring and inclined guide rail, the slider automatically and preferentially opens laterally at the moment of mold opening. This allows soft material products to be completely freed from lateral constraints before ejection, thus completely avoiding the crushing and scratching caused to the product by the traditional rear mold slider during the ejection process, significantly improving the quality and yield of the finished product. At the same time, the front mold slider mechanism is independent of the rear mold, with a more optimized structure. Its movement stroke is unrestricted and highly synchronized, effectively reducing the risk of slider jamming and wear, and extending the service life of the mold.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold with an automatic spring-opening mechanism for the front mold slider, characterized in that: Includes a front mold (1) and a rear mold (2); The front mold (1) is provided with an ejection mechanism (3). The ejection mechanism (3) includes a plurality of fixed blocks (31) fixed in the front mold (1), a guide block (34) formed on the fixed block (31) and arranged obliquely, and at least one pair of sliders (32) moving along the guide block (34). The front end of the slider (32) is provided with a groove (322). The pair of sliders (32) move relative to each other or in opposite directions. The groove (322) moves relative to the sliders (32) to form a mold cavity. The pop-out mechanism (3) includes a resetting member (33) arranged at an angle. The resetting member (33) is elastic and its two ends abut against the front mold (1) and the slider (32) respectively. The rear mold (2) is provided with a shaft mold (23), which extends into or exits the groove (322).

2. The mold with an automatic front mold slider opening mechanism according to claim 1, characterized in that: The front mold (1) is provided with a flow guide assembly (15), the flow guide assembly (15) includes a bracket (154), the bracket (154) has a flow tube (156) penetrating its upper and lower surfaces and a recessed cavity (155) formed from the surface inward, the flow tube (156) is connected to the cavity (155), the slider (32) moves in the cavity (155), and the groove (322) is connected to the flow tube (156) when the mold is closed.

3. The mold with an automatic front mold slider opening mechanism according to claim 2, characterized in that: The flow guide assembly (15) includes a first flow channel plate (151) and a second flow channel plate (152). The second flow channel plate (152) has a flow channel groove (153) and a main flow channel (157). The flow channel groove (153) fits into the bracket (154). The top of the main flow channel (157) is connected to the injection port (14) provided in the front mold (1), and the bottom is connected to the flow channel groove (153).

4. The mold with an automatic spring-opening mechanism for the front mold slider according to claim 1, characterized in that: The reset component (33) includes a fixing bolt (331) and a spring (332). The fixing bolt (331) fixes the position of the spring (332). One end of the spring (332) abuts against the slider (32), and the other end abuts against the front mold (1).

5. The mold with an automatic front mold slider opening mechanism according to claim 2, characterized in that: The fixed block (31) and the slider (32) are configured as two sets, located on both sides of the flow guide assembly (15), and the two sets of sliders (32) can move relative to each other or away from each other along the guide block (34).

6. The mold with an automatic front mold slider opening mechanism according to claim 2, characterized in that: The bracket (154) is recessed inward from both sides to form the clearance groove (155), which penetrates the lower surface of the bracket (154).

7. The mold with an automatic front mold slider opening mechanism according to claim 1, characterized in that: The tilting direction of the guide block (34) is the same as the arrangement direction of the reset member (33).

8. The mold with an automatic spring-opening mechanism for the front mold slider according to claim 3, characterized in that: The first flow channel plate (151) and the second flow channel plate (152) are attached to each other, so that the flow channel groove (153) forms a closed flow channel space.

9. The mold with an automatic front mold slider opening mechanism according to claim 1, characterized in that: The front mold (1) and the rear mold (2) drive the slider (32) to close and open through the mold opening and closing action.

10. The mold with an automatic front mold slider opening mechanism according to claim 1, characterized in that: The shape of the groove (322) of the slider (32) matches the shape of the side surface of the product to be formed.

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