Shovel base matching structure and mold for forming inner convex buckle product

Abstract

The embodiment of the utility model discloses a shovel base matching structure, which comprises a shovel base, a sliding groove, a sliding block, a sliding block and a sliding block, wherein the outer side wall of the shovel base is axially provided with the sliding groove; a T-shaped sliding block is arranged on the side, close to the shovel base, of the inward shrinkage slide, and the T-shaped sliding block is connected to the sliding groove in a sliding mode; a convex buckle groove is formed in one side, far away from the shovel base, of the internal shrinkage slide; the convex buckle groove is used for allowing a melt to enter to form an internal convex buckle of a product; the sliding groove is gradually close to the central axis of the shovel base in the direction towards the top end of the shovel base. According to the shovel base matching structure, the shovel base and the axial sliding groove in the outer side wall of the shovel base are tightly matched with the T-shaped sliding block on the inward shrinkage slide, sliding and positioning of the inward shrinkage slide in the mold opening and closing process are achieved, meanwhile, the sliding groove gradually gets close to the center axis of the shovel base in the top end direction of the shovel base, and the sliding groove is tightly matched with the T-shaped sliding block on the inward shrinkage slide. The inner shrinkage slide can smoothly and stably retreat after injection molding is completed, so that damage to an inner convex buckle of a product is avoided, and the applicability of the mold and the forming quality of the product are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding molds, in particular to a mold for molding an inner convex buckle product with a shovel base matching structure. Background Art

[0002] In the plastic product manufacturing industry, traditional mold design concepts have encountered significant technical bottlenecks for complex product designs with full-circle inward buckles and four or more inward convex buckles arranged at specific angles. Specifically, the traditional six-petal inward-shrinking explosion-type full-circle inward buckle molding mold structure is difficult to directly apply to the manufacturing of such high-density, multi-angle inward convex buckle layout products due to its inherent structural constraints. This limitation has a profound impact on the freedom of product design, forcing designers to make compromise adjustments in the early design stage, that is, reducing the number of inward convex buckles to only three and arranging them in a 120-degree uniform distribution to adapt to the limitations of the mold structure. Although this compromise measure can barely meet the manufacturing requirements of the mold, it inevitably weakens the functional performance of the product, deviates from the integrity and aesthetic pursuit of the original design, and sacrifices part of the product's functionality and the perfection of the original design intent. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a mold for a shovel-base-coordinated structure for forming an inner convex buckle product, so as to solve the problem that the traditional six-petal inward-shrinking and explosive full-circle inner-buckle forming mold structure is difficult to be directly applied to the manufacture of complex products with full-circle inner buckles and four or more inner convex buckle features arranged at specific angles due to its inherent structural constraints.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An embodiment of the utility model provides a shovel base matching structure, which includes: a shovel base, an outer side wall of the shovel base is provided with a slide groove along the axial direction; an inwardly retracted position, a T-shaped slider is provided on the side of the inwardly retracted position close to the shovel base, and the T-shaped slider is slidably connected to the slide groove; a convex buckle groove is provided on the side of the inwardly retracted position away from the shovel base, and the convex buckle groove is used for allowing the melt to enter to form an inner convex buckle of the product; wherein the slide groove gradually approaches the central axis of the shovel base in the direction toward the top end of the shovel base.

[0006] As a preferred technical solution of the utility model, it also includes an ejector block, and the ejector block and the retracted position are arranged at intervals along the circumference of the shovel base.

[0007] As a preferred technical solution of the utility model, the fitting surface between the shovel base and the ejection block is an inclined surface which gradually approaches the central axis of the shovel base toward the top end of the shovel base.

[0008] As a preferred technical solution of the utility model, the shovel base, the retracted row, and the upper surface of the ejection block are combined to form a circle with the center of the shovel base as the center.

[0009] As a preferred technical solution of the present utility model, at least four retracted rows are provided.

[0010] The utility model embodiment also proposes a mold for forming an inner convex buckle product, including a shovel base matching structure as described above, and also includes: a base frame, and a lifting plate, a partition, a rear mold and a front mold arranged on the upper side of the base frame in sequence, the lifting plate, the rear mold and the front mold are movably connected to the base frame along the vertical direction, and the partition is fixedly connected to the base frame; when the front mold and the rear mold are fitted together, a cavity is formed on the fitting side, the shovel base matching structure is passed through the rear mold and the upper part is located in the cavity, the shovel base, the retracted position, the ejection block and the inner wall of the cavity enclose a molding cavity for injection molding products.

[0011] As a preferred technical solution of the utility model, it also includes a connecting piece, one end of which is fixedly connected to the lifting plate, and the other end of the connecting piece is connected to a controllable locking device, and the controllable locking device is used to connect or disconnect the connecting piece and the rear mold; the lower end of the shovel base is fixedly connected to the partition.

[0012] As a preferred technical solution of the utility model, it also includes an inclined ejector seat and an inclined ejector rod, the inclined ejector seat is installed on the lifting plate, the rear mold is provided with an inclined guide hole, the inclined ejector rod is passed through the inclined guide hole and one end is rotatably connected to the inclined ejector seat, and the other end is connected to the ejection block.

[0013] As a preferred technical solution of the utility model, a limit screw is provided between the rear mold and the partition, a threaded hole is provided on the partition, and a coaxial first through-hole and a second through-hole are provided on the rear mold, and the second through-hole is close to the partition; the limit screw is penetrated from top to bottom through the first through-hole, the second through-hole and the threaded hole, and the lower threaded end of the limit screw is screwed to the threaded hole, the diameter of the upper nut end of the limit screw is smaller than the hole diameter of the first through-hole, and the diameter of the upper nut end of the limit screw is larger than the hole diameter of the second through-hole, and when the rear mold is attached to the partition, the distance between the upper nut end of the limit screw and the upper end opening of the second through-hole is a preset sliding demolding distance.

[0014] As a preferred technical solution of the utility model, it also includes a driving device, and the driving device is used to drive the lifting plate to approach or move away from the partition along the vertical direction.

[0015] Compared with the prior art, the shovel base matching structure of the utility model, through the axial sliding groove on the shovel base and its outer side wall, closely cooperates with the T-shaped slider on the retracted position, thereby realizing the sliding and positioning of the retracted position during the opening and closing process of the mold. At the same time, the sliding groove gradually approaches the central axis of the shovel base toward the top end of the shovel base, ensuring that the retracted position can retreat smoothly and steadily after the injection molding is completed, thereby avoiding damage to the inner convex buckle of the product, and effectively improving the applicability of the mold and the molding quality of the product.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a product with a full-circle inner buckle and four inner convex buckles;

[0019] Figure 2 It is a top view structural perspective view of a product with full circumference inner buckle and four inner convex buckles;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of a shovel base matching structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the separation structure of the inwardly retracted row, the ejection block and the shovel base in a shovel base matching structure of the utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of a mold for forming an inner convex buckle product of the utility model;

[0023] Figure 6 This is a cross-sectional view of a mold for forming an inner convex buckle product of the utility model;

[0024] Description of the symbols in the figure:

[0025] 10. Product; 11. Full-circle inward buckle; 12. Inward convex buckle; 20. Shovel base matching structure; 21. Shovel base; 211. Slide groove; 22. Inward retracted position; 221. T-shaped slider; 222. Convex buckle groove; 23. Ejector block; 231. Slanted ejector rod; 232. Slanted ejector seat; 30. Base frame; 31. Lifting plate; 32. Partition plate; 33. Rear mold; 331. Inclined guide hole; 332. First perforation; 333. Rear mold shell; 334. Rear mold core; 34. Front mold; 341. Front mold shell; 342. Front mold core; 35. Connector; 36. Controllable locking device; 37. Limit screw; 371. Threaded end; 372. Nut end. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0033] like Figure 1 and Figure 2 As shown, Figure 1 and Figure 2 The present invention relates to a product 10 having a full-circle inward buckle 11 and four inward convex buckles 12. The conventional six-petal inward-shrinking explosive full-circle inward buckle 11 forming mold structure is difficult to be directly applied to the production of such a product 10 due to its inherent structural constraints. The main reason is that demolding is difficult. Therefore, the inventor has proposed the following improvement plan after research, which is explained below.

[0034] See also Figure 3 and Figure 4The embodiment of the utility model discloses a shovel base matching structure 20, which includes: a shovel base 21, an outer side wall of the shovel base 21 is provided with a slide groove 211 along the axial direction; an inwardly retracted position 22, a T-shaped slider 221 is provided on the side of the inwardly retracted position 22 close to the shovel base 21, and the T-shaped slider 221 is slidably connected to the slide groove 211; a convex buckle groove 222 is provided on the side of the inwardly retracted position 22 away from the shovel base 21, and the convex buckle groove 222 is used for allowing the melt to enter the inner convex buckle 12 of the product 10; wherein the slide groove 211 gradually approaches the central axis of the shovel base 21 in the direction toward the top of the shovel base 21. It should be explained that, during the injection molding stage, the shovel base 21 and the retracted position 22 are relatively stationary, the T-shaped slider 221 remains in the initial position of the slide groove 211, and the melt is injected into the mold through the injection molding machine, filling the surface space of the shovel base 21 and the retracted position 22, including the convex buckle groove 222; then, the melt gradually cools and solidifies in the mold to form the final shape of the product 10. At this stage, the shovel base 21 and the retracted position 22 remain relatively stationary to ensure the dimensional accuracy and shape stability of the product 10; when the product 10 is completely cooled and solidified, the mold enters the mold opening stage. At this time, the relative position between the shovel base 21 and the retracted position 22 changes. Specifically, the T-shaped slider 221 slides in the slide groove 211 toward the top of the shovel base 21, so that the retracted position 22 moves toward the top of the shovel base 21 and also moves toward the central axis of the shovel base 21, and the buckle groove 222 is smoothly separated from the inner buckle 12 of the product 10, thereby reducing the difficulty of demoulding and the risk of damage to the product 10 caused by the complex structure of the product 10. Preferably, the initial position of the T-shaped slider 221 in the slide groove 211 is the lowest end of the slide groove 211. Specifically, at least four retracted positions 22 are provided.

[0035] Furthermore, the shovel base matching structure 20 also includes an ejector block 23, and the ejector block 23 and the retracted row 22 are arranged at intervals along the circumference of the shovel base 21. It should be explained that the upper surfaces of the shovel base 21, the retracted row 22, and the ejector block 23 serve as the inner top support surface of the product 10, and the outer peripheral side surfaces of the shovel base 21, the retracted row 22, and the ejector block 23 serve as the inner peripheral side support surface of the product 10, thereby forming a product 10 with a full-circle inner buckle 11. When the ejector block 23 moves toward the product 10 under the action of the driving device, it will apply an ejection force to the product 10, so that the product 10 can be smoothly separated from the shovel base 21, the retracted row 22, and the rear mold 33.

[0036] Specifically, in order to further optimize the demoulding process, especially for the product 10 with a complex inner convex buckle 12 structure, the fitting surface between the shovel base 21 and the ejector block 23 in this embodiment is an inclined surface gradually approaching the central axis of the shovel base 21 toward the top of the shovel base 21. This design aims to better adapt to the shape of the product 10 by adjusting the contact angle between the ejector block 23 and the shovel base 21, reduce the resistance and stress concentration during demoulding, and thus improve the demoulding efficiency and the quality of the product 10.

[0037] Specifically, the upper surfaces of the shovel base 21 , the retracted row 22 , and the ejection block 23 are combined to form a circle with the center of the shovel base 21 as the center.

[0038] See also Figure 5 and Figure 6 The embodiment of the utility model also proposes a mold for forming an inner convex buckle product, including a shovel base matching structure 20 as above, and also including: a base frame 30, and a lifting plate 31, a partition 32, a rear mold 33 and a front mold 34 arranged on the upper side of the base frame 30 in sequence, the lifting plate 31, the rear mold 33, and the front mold 34 are movably connected to the base frame 30 in the vertical direction, the partition 32 is fixedly connected to the base frame 30, and the shovel base 21 is fixedly connected to the partition 32; when the front mold 34 and the rear mold 33 are fitted together, a cavity is formed on the fitting side, the shovel base matching structure 20 is penetrated by the rear mold 33 and the upper part is located in the cavity, and the shovel base 21, the retracted row position 22, the ejection block 23 and the inner wall of the cavity enclose a molding cavity for the injection molding product 10. Optionally, the front mold 34 includes a front mold shell 341 and a front mold core 342 located between the front mold shell 341 and the rear mold 33, and the rear mold 33 includes a rear mold shell 333 and a rear mold core 334 located between the rear mold shell 333 and the front mold 34. It should be explained that the settings of the front mold shell 341, the front mold core 324, the rear mold shell 333, and the rear mold core 334 are prior arts and will not be elaborated here.

[0039] Furthermore, it also includes a connecting member 35, one end of which is fixedly connected to the lifting plate 31, and the other end of the connecting member 35 is connected to a controllable locking device 36, which is used to connect or disconnect the connecting member 35 and the rear mold 33; the lower end of the shovel base 21 is fixedly connected to the partition 32.

[0040] In a possible working process, it includes: 1. Injection molding: the injection molding machine injects the melt into the molding cavity, fills the space between the shovel base 21, the retracted position 22, the ejector block 23 and the inner wall of the cavity, and forms the preliminary shape of the product 10; 2. Cooling and shaping: the melt cools and solidifies in the molding cavity to form the final shape of the product 10, including the precise inner convex buckle 12 structure; 3. Mold opening: the front mold 34 is separated from the rear mold 33 in the vertical direction, the cavity is opened, and the product 10 is exposed upward; 4. Demolding: the controllable locking device 36 enables the connecting member 35 to establish a connection with the rear mold 33, the lifting plate 31 rises under the action of the driving device, and the connecting member 35 drives the rear mold 33 and the retracted position 22 and the ejector block 23 to rise together with the lifting plate 31. The shovel base 21 is fixedly connected to the partition 32 and does not move in place. The retracted position 22 and the shovel base 21 produce relative movement and slide toward the top of the shovel base 21 while retracting, and the inner convex buckle 12 and the convex buckle groove 222 are separated smoothly. It should be explained that the controllable locking device 36 is a prior art, and can be an electromagnet adsorption structure or a telescopic member socket docking structure, which will not be described in detail here.

[0041] Furthermore, it also includes an inclined ejector seat 232 and an inclined ejector rod 231, wherein the inclined ejector seat 232 is mounted on the lifting plate 31, an inclined guide hole 331 is provided on the rear mold 33, and the inclined ejector rod 231 is passed through the inclined guide hole 331 and one end of the inclined ejector seat 232 is rotatably connected, and the other end is connected to the ejection block 23. The inclined direction of the other end of the inclined ejector rod 231 is toward the shovel base 21. In this embodiment, when the retracted slide position 22 and the shovel base 21 produce relative movement and slide inward toward the top of the shovel base 21, the inner convex buckle 12 and the convex buckle groove 222 are successfully separated, and the controllable locking device 36 releases the connection between the connecting rod and the rear mold 33, and the lifting plate 31 continues to rise and drives the inclined ejector rod 231 to move upward. With the rise of the inclined ejector rod 231 and its cooperation with the inclined guide hole 331, the upper end of the inclined ejector rod 231 drives the ejection block 23 to move upward, and at the same time, it moves along the fitting surface of the shovel base 21 and the ejection block 23 toward the shovel base 21.

[0042] Furthermore, a limiting screw 37 is provided between the rear mold 33 and the partition 32, a threaded hole is provided on the partition 32, and a coaxial first through hole 332 and a second through hole are provided on the rear mold 33, and the second through hole is close to the partition 32; the limiting screw 37 is penetrated from top to bottom in the first through hole 332, the second through hole and the threaded hole, and the lower threaded end 371 of the limiting screw 37 is screwed into the threaded hole, and the upper nut end 372 of the limiting screw 37 has a diameter smaller than the aperture of the first through hole 332, and a diameter larger than the aperture of the second through hole. When the rear mold 33 is attached to the partition 32, the distance between the upper nut end 372 of the limiting screw 37 and the upper end opening of the second through hole is a preset row position demoulding distance. It should be explained that the preset slide demoulding distance refers to the distance that the inner slide 22 moves vertically upward when the convex buckle groove 222 on the inner slide 22 is disengaged from the inner convex buckle 12 on the product 10 .

[0043] Specifically, a driving device is also included, and the driving device is used to drive the lifting plate 31 to approach or move away from the partition plate 32 in the vertical direction.

[0044] Compared with the prior art, the shovel base matching structure of the utility model, through the axial sliding groove on the shovel base and its outer side wall, closely cooperates with the T-shaped slider on the retracted position, thereby realizing the sliding and positioning of the retracted position during the opening and closing process of the mold. At the same time, the sliding groove gradually approaches the central axis of the shovel base toward the top end of the shovel base, ensuring that the retracted position can retreat smoothly and steadily after the injection molding is completed, thereby avoiding damage to the inner convex buckle of the product, and effectively improving the applicability of the mold and the molding quality of the product.

[0045] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A shovel base matching structure, characterized in that: include: A shovel base, wherein the outer side wall of the shovel base is provided with a slide groove along the axial direction; An inwardly retracted position, wherein a T-shaped slider is provided on one side of the inwardly retracted position close to the shovel base, and the T-shaped slider is slidably connected to the slide groove; a convex buckle groove is provided on one side of the inwardly retracted position away from the shovel base, and the convex buckle groove is used for the melt to enter the inner convex buckle of the product; Wherein, the slide groove gradually approaches the central axis of the shovel base in the direction toward the top end of the shovel base.

2. A shovel-base matching structure according to claim 1, characterized in that: It also includes an ejector block, which is spaced apart from the indentation position along the circumference of the shovel base.

3. A shovel-base matching structure according to claim 2, characterized in that: The fitting surface between the shovel base and the ejection block is an inclined surface which gradually approaches the central axis of the shovel base toward the top end of the shovel base.

4. A shovel-base matching structure according to claim 3, characterized in that: The shovel base, the retracted row, and the upper surface of the ejection block are combined to form a circle with the center of the shovel base as the center.

5. A shovel-base matching structure according to claim 3, characterized in that: At least four indented rows are provided.

6. A mold for forming an inner convex buckle product, characterized in that: It comprises a shovel base matching structure as described in any one of claims 3-5, and also comprises: a base frame, and a lifting plate, a partition, a rear mold and a front mold which are sequentially arranged on the upper side of the base frame, the lifting plate, the rear mold and the front mold are movably connected to the base frame in the vertical direction, the partition is fixedly connected to the base frame, and the shovel base is fixedly connected to the partition; when the front mold and the rear mold are fitted together, a cavity is formed on the fitting side, the shovel base matching structure is passed through the rear mold and the upper part is located in the cavity, the shovel base, the retracted row position, the ejection block and the inner wall of the cavity enclose a molding cavity for injection molding products.

7. A mold for forming an inner convex buckle product according to claim 6, characterized in that: It also includes a connecting piece, one end of which is fixedly connected to the lifting plate, and the other end of the connecting piece is connected to a controllable locking device, and the controllable locking device is used to connect or disconnect the connecting piece and the rear mold; the lower end of the shovel base is fixedly connected to the partition.

8. The mold for forming an inner convex buckle product according to claim 6, characterized in that: It also includes an inclined ejector seat and an inclined ejector rod, wherein the inclined ejector seat is installed on the lifting plate, an inclined guide hole is provided on the rear mold, the inclined ejector rod is passed through the inclined guide hole and one end is rotatably connected to the inclined ejector seat, and the other end is connected to the ejection block.

9. A mold for forming an inner convex buckle product according to claim 6, characterized in that: A limiting screw is provided between the rear mold and the partition, a threaded hole is provided on the partition, and a coaxial first through-hole and a second through-hole are provided on the rear mold, and the second through-hole is close to the partition; the limiting screw is penetrated from top to bottom through the first through-hole, the second through-hole and the threaded hole, and the lower threaded end of the limiting screw is screwed to the threaded hole, the diameter of the upper nut end of the limiting screw is smaller than the hole diameter of the first through-hole, and the diameter of the upper nut end of the limiting screw is larger than the hole diameter of the second through-hole. When the rear mold is attached to the partition, the distance between the upper nut end of the limiting screw and the upper end opening of the second through-hole is a preset sliding demoulding distance.

10. A mold for forming an inner convex buckle product according to claim 6, characterized in that: It also includes a driving device, which is used to drive the lifting plate to approach or move away from the partition along the vertical direction.

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