Secondary needle removing slide mechanism applied to mold

Abstract

The utility model relates to the technical field of dies, in particular to a secondary needle release slide mechanism applied to a die, which comprises a slide mechanism arranged on a lower die main body, the slide mechanism comprises a slide slider, a slide push block, a limiting rod and at least one straight needle; the slide slider is connected to the lower die main body in a sliding manner and is used for forming the side part of a product; the slide push block is connected to the lower die main body in a sliding manner and is in butt joint with the rear end of the slide slider; the limiting rod is connected to the rear end of the slide slider and is driven after the slide push block slides for a certain distance; the inclined needle is arranged at the front end of the slide slide block in a guiding and penetrating manner along the slide slide block and is in sliding fit with the slide push block; the limiter is fixed on the lower die main body and is used for elastically propping against the slide slide block; in order to solve the problems that one side of a product is provided with a straight hole structure and an inclined hole structure at the same time and demolding is difficult to achieve through a traditional method, ordered demolding of a straight hole mold core and an inclined needle in different stages is achieved through the unique secondary needle demolding slide mechanism design, and the problem of mold core movement interference is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a secondary ejection pin sliding mechanism applied to molds. Background Technology

[0002] In modern industrial production, mold forming is a key process in manufacturing many products. During the mold forming process, products with open structures are frequently encountered. For the forming and demolding of such open structures, the traditional method uses a sliding block combined with a core. When the mold opens after the product has been formed, the sliding block plays a crucial role, driving the core out of the product and facilitating smooth demolding. This method has demonstrated good effectiveness and reliability when handling relatively simple open structure products.

[0003] However, with the continuous development of industrial products, the structural complexity of products is increasing. Currently, a new situation has emerged: some products simultaneously possess both straight and oblique hole structures on one side. This presents unprecedented challenges in mold design and manufacturing for such products. For straight and oblique hole structures, if cores are used for molding, the different directions of the straight and oblique holes prevent them from being placed on the same sliding block. This is because the movement directions and trajectories of the straight and oblique hole cores differ, and placing them on the same slider cannot meet their respective demolding requirements. Furthermore, simultaneously setting multiple sliding blocks at the same molding position on the same side of the product is extremely difficult. Due to the limited space on one side of the product, setting multiple sliding blocks not only leads to an overly complex mold structure but also makes it difficult to resolve the motion interference problem between the sliders. This series of problems ultimately results in the straight and oblique hole cores hindering product demolding during movement, severely affecting production efficiency and quality, increasing production costs, and complicating mold design and manufacturing. A new solution is urgently needed to address the demolding problem of such complex product opening structures. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A secondary ejector sliding mechanism for molds includes a sliding mechanism disposed on a lower mold body. The sliding mechanism includes a sliding slider slidably connected to the lower mold body for molding the side of the product, a sliding push block slidably connected to the lower mold body and abutting the rear end of the sliding slider, a limiting rod connected to the rear end of the sliding slider and driven by the sliding push block after sliding a certain distance, at least one straight needle connected to the front end of the sliding slider, at least one oblique needle passing through the sliding slider guide to its front end and slidingly cooperating with the sliding push block, and a limiter fixed to the lower mold body for elastically abutting the sliding slider.

[0006] The sliding block has a T-shaped groove corresponding to the oblique needle at the front end and a T-shaped slider at the rear end. The oblique needle and the sliding block slide together through the T-shaped slider and the T-shaped groove.

[0007] Preferably, a limiting through hole is provided inside the sliding push block, the limiting rod slides in conjunction with the limiting through hole, and the rear end of the limiting rod is provided with a limiting part that engages with the limiting hole, so that the limiting rod is driven after the sliding push block slides a certain distance.

[0008] Preferably, the lower end of the slide block is provided with a snap-fit ​​groove, and the limiter is elastically connected with a snap-fit ​​protrusion. The snap-fit ​​protrusion engages with the snap-fit ​​groove to keep the slide block in the mold closed state.

[0009] Preferably, a fixing plate for inserting oblique needles is installed at the rear end of the sliding block, a limiting rod is fixedly connected to the fixing plate, or the limiting rod passes through the fixing plate and is fixedly connected to the sliding block, the rear end of the straight needle passes through the rear end of the sliding block, and the rear end of the straight needle is provided with a fixing part, which restricts the fixing part between the fixing plate and the sliding block.

[0010] Preferably, there are multiple oblique needles and multiple corresponding T-shaped slides, and the T-shaped slides are mutually offset or staggered, wherein the oblique needles corresponding to the staggered T-shaped slides are mutually offset.

[0011] Preferably, a deepened slide is provided on the sliding push block at the position corresponding to the T-shaped slide groove. The T-shaped slide is located inside the deepened slide, and the deepened sliding cooperates with the rear guide sliding of the inclined needle.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] To address the issue of products having both straight and oblique holes on one side, which are difficult to demold using traditional methods, a unique secondary ejection mechanism design was implemented. This design enables the straight hole core and oblique pins to be demolded in an orderly manner at different stages, effectively avoiding core movement interference and ensuring that the product can be smoothly ejected from the mold.

[0014] Compared to the solution of setting multiple complex sliding blocks on the same side of the product, this mechanism has a relatively simple structure. Through reasonable component layout and motion design, it reduces the complexity of the mold, lowers the difficulty of mold design and manufacturing, and also reduces production costs.

[0015] Because it can achieve stable and accurate demolding, it reduces product damage caused by demolding problems and improves product quality; moreover, the smooth demolding process optimizes the mold opening and closing time, thereby improving production efficiency.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model installed on the lower mold body;

[0019] Figure 2 This is a structural schematic diagram of the present invention from one perspective;

[0020] Figure 3 This is a structural schematic diagram from another perspective of the present invention;

[0021] Figure 4 This is a cross-sectional structural diagram of the product when it is docked with the present invention;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the product when it is docked.

[0023] The reference numerals and names in the figure are as follows:

[0024] The lower mold body 10, sliding block 21, snap-fit ​​groove 211, sliding push block 22, T-shaped slide 221, deepened slide 222, limiting rod 23, limiting part 231, straight needle 24, fixing part 241, oblique needle 25, T-shaped sliding block 251, limiter 26, snap-fit ​​protrusion 261, and fixing plate 27. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figure 1-5In this embodiment of the utility model, a secondary needle ejection mechanism for molds is proposed, including a sliding mechanism disposed on the lower mold body 10. The sliding mechanism includes a sliding slider 21 slidably connected to the lower mold body 10 for molding the side of the product, a sliding push block 22 slidably connected to the lower mold body 10 and mating with the rear end of the sliding slider 21, a limiting rod 23 connected to the rear end of the sliding slider 21 and driven by the sliding push block 22 after sliding a certain distance, at least one straight needle 24 connected to the front end of the sliding slider 21, at least one oblique needle 25 guided along the sliding slider 21 to its front end and slidingly engaged with the sliding push block 22, and a limiter 26 fixed on the lower mold body 10 for elastically abutting the sliding slider 21.

[0027] The sliding push block 22 has a T-shaped groove 221 corresponding to the oblique needle 25 at the front end, and a T-shaped slider 251 at the rear end of the oblique needle 25. The oblique needle 25 and the sliding push block 22 slide together through the T-shaped slider 251 and the T-shaped groove 221.

[0028] In the initial state, components such as the sliding block 21 and the sliding push block 22 are positioned in their respective positions on the lower mold body 10. A straight pin 24 is connected to the front end of the sliding block 21, and an angled pin 25 passes through the sliding block 21 along its guide to its front end and slides with the sliding push block 22 via a T-shaped slider and a T-shaped groove. A limiting rod 23 is connected to the rear end of the sliding block 21, and a limiting device 26 is fixed to the lower mold body 10 and elastically abuts against the sliding block 21. At this time, the entire mechanism is ready for mold closing to form the product. During mold opening, when the mold opens, the sliding push block 22 begins to move. In the initial stage of movement, the sliding push block 22 slides a certain distance. Because the rear T-shaped slider of the angled pin 25 slides with the T-shaped groove at the front end of the sliding push block 22, the movement of the sliding push block 22 will cause the angled pin 25 to move forward relative to the sliding block 21 along its guide, causing the angled pin 25 to disengage from the angled hole of the product. As the sliding push block 22 continues to move, after sliding a certain distance, it will drive the limiting rod 23, thereby causing the sliding block 21 to move as a whole. At this time, the straight pin 24 connected to the front end of the sliding block 21 will disengage from the straight hole of the product as the sliding block 21 moves, completing the entire demolding process. During this process, the elastic contact of the limiting device 26 with the sliding block 21 ensures the smoothness and accuracy of the movement.

[0029] Therefore, in the above technical solution, in response to the problem that the product has both straight hole and oblique hole structures on one side and is difficult to demold using traditional methods, a unique secondary ejection pin sliding mechanism design is used to achieve orderly demolding of the straight hole core and oblique pin 25 at different stages, effectively avoiding the problem of core movement interference and ensuring that the product can be smoothly ejected from the mold.

[0030] Compared to the solution of setting multiple complex sliding blocks 21 on the same side of the product, this mechanism is relatively simple. Through reasonable component layout and motion design, it reduces the complexity of the mold, lowers the difficulty of mold design and manufacturing, and also reduces production costs.

[0031] Because it can achieve stable and accurate demolding, it reduces product damage caused by demolding problems and improves product quality; moreover, the smooth demolding process optimizes the mold opening and closing time, thereby improving production efficiency.

[0032] Please see Figure 4 Based on the above technical solution, it is further proposed to set a limiting through hole inside the sliding push block 22, and the limiting rod 23 slides with the limiting through hole. The rear end of the limiting rod 23 is provided with a limiting part 231 that limits the limiting hole. The limiting rod 23 is driven by the sliding push block 22 after sliding a certain distance. In terms of design, a countersunk hole matching the limiting part 231 can be set inside the limiting through hole, so that the limiting part 231 can move to the bottom of the countersunk hole and then abut against the limiting through hole, thereby improving the utilization rate of the overall structural space.

[0033] Please see Figure 2-4 Based on the above technical solution, it is further proposed that the lower end of the slide block 21 is provided with a snap-fit ​​groove 211, and the limiter 26 is elastically connected with a snap-fit ​​protrusion 261. The snap-fit ​​protrusion 261 engages with the snap-fit ​​groove 211 to keep the slide block 21 in the mold-closed state. This allows the slide block 21 to be fixed in the appropriate position very precisely and firmly in the mold-closed state. This helps ensure that during the product molding process, the slide block 21 will not experience unnecessary displacement or shaking due to external forces such as injection pressure, thus ensuring the stability of the internal structure of the mold and facilitating the molding of the product according to accurate shape and size.

[0034] Please see Figure 2-5Based on the above technical solution, a further proposed method is to install a fixing plate 27 at the rear end of the sliding block 21, through which the inclined needle 25 can pass. A limiting rod 23 is fixedly connected to the fixing plate 27, or the limiting rod 23 passes through the fixing plate 27 and is fixedly connected to the sliding block 21. The rear end of the straight needle 24 passes through the rear end of the sliding block 21, and a fixing part 241 is provided at the rear end of the straight needle 24, which restricts the movement between the fixing plate 27 and the sliding block 21. The setting of the fixing plate 27 and the connection method between the limiting rod 23, the straight needle 24, and the sliding block 21 make the entire structure more stable. During mold opening and closing, it can better withstand various forces, reduce loosening or displacement between components, and ensure the accuracy and reliability of the demolding action. This connection design optimizes the relationship between the limiting rod 23, the straight needle 24, and the sliding block 21, making their coordinated action during demolding smoother. The movements of each component are interconnected and orderly, which further improves demolding efficiency and reduces the risk of product demolding failure or mold damage due to uncoordinated component movements.

[0035] Please see Figure 2-5 Based on the above technical solution, it is further proposed that multiple oblique needles 25 are provided, and multiple T-shaped slides 221 are correspondingly provided. The T-shaped slides 221 are mutually offset or staggered, with the oblique needles 25 corresponding to the staggered T-shaped slides 221 mutually offset. By setting multiple oblique needles 25 and various T-shaped slide combinations, the complex oblique hole structure on the product can be better adapted. Regardless of the distribution or direction differences of the oblique holes, this design allows the oblique needles 25 to accurately perform forming and demolding operations on the oblique holes, improving the mold's adaptability to complex product structures. Furthermore, a deepened slide 222 is provided on the sliding push block 22 at the position corresponding to the T-shaped slide 221. The T-shaped slide 221 is located inside the deepened slide 222, and the deepened sliding engages with the rear guide sliding of the oblique needles 25. The design of the deepened slide 222 enhances the stability of the oblique needle movement. It provides additional guiding support for the oblique pin 25, reducing the risk of wobbling and offset during movement. This not only facilitates the smooth ejection of the oblique pin 25 from the oblique hole, but also extends the service life of the oblique pin 25 and the entire demolding mechanism, reducing the probability of mold damage caused by unstable movement of the oblique pin 25.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A secondary ejection sliding mechanism for a mold, comprising a sliding mechanism disposed on the lower mold body (10), characterized in that, The sliding mechanism includes a sliding block (21) slidably connected to the lower mold body (10) for molding the side of the product, a sliding push block (22) slidably connected to the lower mold body (10) and mated to the rear end of the sliding block (21), a limiting rod (23) connected to the rear end of the sliding block (21) and driven by the sliding push block (22) sliding a certain distance, at least one straight needle (24) connected to the front end of the sliding block (21), at least one oblique needle (25) guided along the sliding block (21) to its front end and slidably engaged with the sliding push block (22), and a limiter (26) fixed to the lower mold body (10) for elastically abutting the sliding block (21). Among them, a T-shaped groove (221) corresponding to the oblique needle (25) is provided at the front end of the row push block (22), and a T-shaped slider (251) is provided at the rear end of the oblique needle (25). The oblique needle (25) and the row push block (22) slide together through the T-shaped slider (251) and the T-shaped groove (221).

2. The secondary ejection sliding mechanism for a mold according to claim 1, characterized in that, A limiting through hole is provided inside the push block (22), and the limiting rod (23) slides with the limiting through hole. The rear end of the limiting rod (23) is provided with a limiting part (231) that cooperates with the limiting hole to limit the movement, so that the limiting rod (23) is driven by the push block (22) after sliding a certain distance.

3. The secondary ejection sliding mechanism for a mold according to claim 1, characterized in that, The lower end of the slide block (21) is provided with a snap-fit ​​groove (211), and the limiter (26) is elastically connected with a snap-fit ​​protrusion (261). The snap-fit ​​protrusion (261) and the snap-fit ​​groove (211) engage in a snap-fit ​​engagement to keep the slide block (21) in the mold closed state.

4. The secondary ejection sliding mechanism for a mold according to claim 1, characterized in that, A fixing plate (27) for inserting oblique needles (25) is installed at the rear end of the sliding block (21). A limiting rod (23) is fixedly connected to the fixing plate (27), or the limiting rod (23) passes through the fixing plate (27) and is fixedly connected to the sliding block (21). The rear end of the straight needle (24) is inserted into the rear end of the sliding block (21), and a fixing part (241) is provided at the rear end of the straight needle (24). The fixing part (241) is restricted between the fixing plate (27) and the sliding block (21).

5. A secondary ejection sliding mechanism for a mold according to claim 1, characterized in that, There are multiple oblique needles (25) and multiple T-shaped grooves (221). The T-shaped grooves (221) are mutually offset or interlocked. The oblique needles (25) corresponding to the interlocked T-shaped grooves (221) are mutually offset.

6. A secondary ejection sliding mechanism for a mold according to claim 1, characterized in that, A deepened slide (222) is provided on the push block (22) at the position corresponding to the T-shaped slide (221). The T-shaped slide (221) is located inside the deepened slide (222), and the deepened slide cooperates with the rear guide slide of the oblique needle (25).

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