Injection mold for folding spoon

Abstract

The utility model relates to the technical field of tableware injection molds, and provides an injection mold for a folding spoon, which comprises a fixed mold frame, a fixed mold frame, a movable mold frame and a movable mold frame, and the movable mold frame is movably matched with the fixed mold frame, a second insert and two third inserts are arranged on the movable mold frame, the end faces of the two third inserts are provided with convex parts for forming the clamping grooves, and the ends, away from each other, of the two third inserts are embedded into the first forming cavity and the third forming cavity correspondingly. Compared with the prior art, the spoon has the advantages that the first forming cavity, the second forming cavity and the third forming cavity which are sequentially communicated are formed through the middle insert, the second insert and the two first inserts, the spoon handle, the spoon handle and the spoon body are formed respectively, and the protrusions are arranged in the second forming cavity and used for forming the clamping grooves; and the two third inserts are arranged to be used for forming the clamping part, and injection molding production of the folding spoon capable of being folded for the second time is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of tableware injection moulds, in particular to an injection mould for a folding spoon. Background Art

[0002] Most of the existing folding spoons are manufactured by injection molding. For example, a Chinese utility model patent (grant announcement number: CN204398248U) discloses a design of an injection mold for a transparent plastic folding spoon. Another example is a Chinese utility model patent application (grant announcement number: CN209176100U), which shows a simplified structure of a folding spoon mold. However, the contents of these published patents are mainly aimed at the design of a folding spoon that can only be folded once. For example, Figure 1 and Figure 2 As shown, a folding spoon with a complex structure having a spoon body, a spoon handle and a spoon handle, wherein both the spoon body and the spoon handle can be folded relative to the spoon handle, is difficult to produce with current injection molding technology and mold design. In view of this, in order to enable the folding spoon to achieve more folding functions, it is particularly necessary to optimize and innovate the structure of the fixed mold cavity insert and the movable mold cavity insert in the injection mold. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an injection mold for a foldable spoon in view of the current status of the prior art.

[0004] The utility model solves the above technical problems by adopting a technical solution: an injection mold for a folding spoon is provided, wherein the folding spoon comprises a spoon body, a spoon handle and a spoon handle which are rotatably connected in sequence, both ends of the spoon handle have a clamping groove, and both the spoon body and the spoon handle have a clamping part which is movably clamped with the clamping groove, and the injection mold comprises:

[0005] A fixed mold frame, on which a middle insert and two first inserts symmetrically arranged on both sides of the middle insert are arranged, a first molding cavity is formed between the middle insert and the two first inserts, and the first molding cavity is vertically arranged to mold the spoon handle;

[0006] a movable mold frame, which is movably matched with the fixed mold frame, the movable mold frame is provided with a second insert, a second molding cavity and a third molding cavity are formed between the second insert and the two first inserts, the first molding cavity, the second molding cavity and the third molding cavity are sequentially connected, the second molding cavity is horizontally arranged, and is used to mold the spoon handle, the angle between the third molding cavity and the direction of the movable mold frame pointing to the fixed mold frame is an acute angle, and the third molding cavity is used to mold the spoon body;

[0007] Two third inserts are movably embedded in the second insert, and the two third inserts are respectively embedded in the first molding cavity and the second molding cavity, and the junction of the second molding cavity and the third molding cavity. The end faces of the two third inserts have convex parts for forming the clamping grooves, and the ends of the two third inserts away from each other are respectively embedded in the first molding cavity and the third molding cavity to form the two clamping parts.

[0008] The above-mentioned injection mold for a folding spoon also includes an ejection assembly arranged on one side of the movable mold frame, on which a first ejector rod and a second ejector rod are movably arranged, the end of the first ejector rod passes through the movable mold frame and abuts against the third insert, and is used to eject the third insert from the second insert, and the end of the second ejector rod sequentially passes through the movable mold frame and the third insert and is inserted into the second molding cavity, and is used to eject the molded folding spoon from the third insert.

[0009] In the above-mentioned injection mold for a folding spoon, the ejection assembly comprises:

[0010] Base plate;

[0011] Two pads are spaced apart and arranged on the bottom plate, the other sides of the two pads are connected to the movable mold frame, and the opposite sides of the two pads are designed with limiting grooves;

[0012] A first pushing member, which is movably arranged between the two pads and movably abuts against the limiting groove, and the first push rod is clamped on the first pushing member;

[0013] A first spring, which is disposed between the first pusher and the backing plate and is in a compressed state when the movable mold frame and the fixed mold frame are in contact with each other;

[0014] A second pushing member is movably disposed between the two pads and located between the first pushing member and the movable mold frame, and the second ejector rod is clamped on the second pushing member;

[0015] The second spring is arranged between the second pushing member and the movable mold frame and is in a compressed state when the second push rod pushes the folding spoon away from the third insert.

[0016] In the above-mentioned injection mold for a folding spoon, both the first pushing member and the bottom plate are provided with through holes, and the two through holes are coaxially arranged.

[0017] In the above-mentioned injection mold for a folding spoon, the first pushing member and the second pushing member both have a threaded push rod fixing plate and a push rod pushing plate, the two push rod fixing plates are respectively connected to the first push rod and the second push rod hanging platform, and the two push rod pushing plates are respectively movably abutted against the end surfaces of the first push rod and the second push rod.

[0018] Compared with the prior art, the advantage of the utility model lies in that a first molding cavity, a second molding cavity and a third molding cavity which are connected in sequence are formed by an intermediate insert, a second insert and two first inserts, and a spoon handle, a spoon handle and a spoon body are formed respectively. A protrusion is provided in the second molding cavity to form a snap-fit ​​groove, and two third inserts are provided to form a snap-fit ​​portion, thereby completing the injection molding production of a foldable spoon which can be folded twice. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional picture of a folding spoon;

[0020] Figure 2 This is a stereogram of the folding spoon from another direction;

[0021] Figure 3 It is a three-dimensional diagram of the injection mold of the present invention;

[0022] Figure 4 is a plan view of the injection mold of the present scheme;

[0023] Figure 5 yes Figure 4 Sectional view along AA direction;

[0024] Figure 6 yes Figure 4 Cross-sectional view along the BB direction;

[0025] Figure 7 is a stereoscopic diagram of the first insert and the second insert installed in the fixed mold frame;

[0026] Figure 8 The injection mold of this solution is hidden Figure 7 A three-dimensional view of the components in the figure;

[0027] Fig. 9 yes Figure 8 A three-dimensional diagram of the central structure.

[0028] In the figure, 1, spoon body; 2, spoon handle; 3, spoon handle; 4, snap-in groove; 5, snap-in part; 6, fixed mold frame; 7, middle insert; 8, first insert; 9, first molding cavity; 10, movable mold frame; 11, second insert; 12, second molding cavity; 13, third molding cavity; 14, third insert; 15, convex part; 16, ejector assembly; 17, first ejector pin; 18, second ejector pin; 19, bottom plate; 20, pad; 21, limit groove; 22, first push member; 23, first spring; 24, second push member; 25, second spring; 26, through hole; 27, ejector pin fixing plate; 28, ejector pin push plate. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] like Figure 1 and Figure 2 As shown, the folding spoon comprises a spoon body 1, a spoon handle 2 and a spoon grip 3 which are rotatably connected in sequence, both ends of the spoon handle 2 are provided with a snap-in groove 4, and the spoon body 1 and the spoon grip 3 are provided with a snap-in portion 5 which is movably snap-in with the snap-in groove 4, so as to keep the folding spoon in an extended state when the folding spoon is in use.

[0031] like Figures 3 to 9 As shown, an injection mold for a folding spoon comprises a fixed mold frame 6 and a movable mold frame 10 that are movably matched. The fixed mold frame 6 is provided with an intermediate insert 7 and first inserts 8 symmetrically arranged on both sides of the intermediate insert 7. A first molding cavity 9 is formed between the two first inserts 8 and the intermediate insert 7. The first molding cavity 9 is vertically arranged to mold the spoon handle 3 of the folding spoon, and the movable mold frame 10 is separated from the fixed mold frame 6 so that the spoon handle 3 formed in the first molding cavity 9 is separated from the first molding cavity 9. A second insert 11 is provided on the movable mold frame 10. A second molding cavity 12 and a third molding cavity 13 are formed between the second insert 11 and the two first inserts 8. The first molding cavity 9, the second molding cavity 9, and the third molding cavity 13 are formed between the second insert 11 and the two first inserts 8. The mold cavity 12 is connected with the third molding cavity 13 in sequence. The second molding cavity 12 is horizontally arranged and is used to mold the spoon handle 2. The angle between the third molding cavity 13 and the direction of the movable mold frame 10 pointing to the fixed mold frame 6 is an acute angle. The third molding cavity 13 is used to mold the spoon body 1; two third inserts 14 are movably embedded in the second insert 11, and the two third inserts 14 are respectively embedded in the first molding cavity 9 and the second molding cavity 12, and at the junction of the second molding cavity 12 and the third molding cavity 13. The end faces of the two third inserts 14 have a convex portion 15 for molding the clamping groove 4. The ends of the two third inserts 14 away from each other are respectively embedded in the first molding cavity 9 and the third molding cavity 13 to form two clamping parts 5.

[0032] Of course, in addition to the above components, the injection mold of the present invention also includes a cooling unit, a feeding unit, and guide pins and guide sleeves for positioning the fixed mold frame 6 and the movable mold frame 10, which are well known to technical personnel in this field. However, these components are not improved parts of the injection mold of the present invention, so these components are not described in the present invention.

[0033] In the present embodiment, an ejector assembly 16 is further included, which is arranged on one side of the movable mold frame 10, and a first ejector rod 17 and a second ejector rod 18 are movably arranged on the ejector assembly 16. The end of the first ejector rod 17 passes through the movable mold frame 10 and abuts against the third insert 14, so as to eject the third insert 14 from the second insert 11. The end of the second ejector rod 18 passes through the movable mold frame 10 and the third insert 14 in turn and is inserted into the second molding cavity 12, so as to eject the molded folding spoon from the third insert 14.

[0034] After the injection mold is filled and the folding spoon is solidified in the injection mold, the movable mold frame 10 is first separated from the fixed mold frame 6. When the movable mold frame 10 moves, it drives the second insert 11 set thereon to separate from the middle insert 7 and the two first inserts 8, and then the ejection assembly 16 is actuated. When the ejection assembly 16 starts to move, the first ejector rod 17 and the second ejector rod 18 move synchronously without relative displacement, and the third insert 14 and the folding spoon adhered to the third insert 14 are pushed away from the second insert 11. Then the ejection assembly 16 drives the second ejector rod 18 to move relative to the first ejector rod 17 to separate the folding spoon from the third insert 14, and the folding spoon is demolded.

[0035] Furthermore, the ejector assembly 16 includes: a bottom plate 19; two spaced-apart pads 20 disposed on the bottom plate 19, the other sides of the two pads 20 are connected to the movable mold frame 10, and the opposite sides of the two pads 20 are designed with limit grooves 21; a first pusher 22, which is movably disposed between the two pads 20 and movably abuts against the limit grooves 21, and the first ejector rod 17 is clamped on the first pusher 22; a first spring 23, which is disposed between the first pusher 22 and the pad 20, and is in the movable mold frame 1 0 is in a compressed state when it is in contact with the fixed mold frame 6; the second pushing member 24 is movably arranged between the two pads 20 and located between the first pushing member 22 and the movable mold frame 10, and the second push rod 18 is clamped on the second pushing member 24; the second spring 25 is arranged between the second pushing member 24 and the movable mold frame 10, and is in a compressed state when the second push rod 18 pushes the folding spoon away from the third insert 14, and the first pushing member 22 and the bottom plate 19 are both provided with a through hole 26, and the two through holes 26 are coaxially arranged.

[0036] During installation, the fixed mold frame 6 is installed on the fixed part of the injection molding machine, and the bottom plate 19 is installed on the movable part of the injection molding machine. The ejection assembly 16 and the movable mold frame 10 are driven to move closer to or farther from the fixed mold frame 6 through the movable part of the injection molding machine to realize the closing and opening of the injection mold. The ejection mechanism on the injection molding machine is connected to the second pusher 24 through the through hole 26. After the injection mold is closed, the ejection mechanism on the injection molding machine pulls the second pusher 24 to move to the side close to the bottom plate 19. At this time, under the compression of the first pusher 22, the first spring 23 is in a compressed state. After the injection mold is opened, the ejection mechanism of the injection molding machine pushes the second pusher 24 to drive the second ejector 18 to move toward the fixed mold frame 6, and the second spring 25 restores the extended state to push the first The pushing member 22 moves synchronously with the second pushing member 24, so that the first ejector rod 17 and the second ejector rod 18 move synchronously. After the first pushing member 22 moves to abut against the limiting groove 21, the first pushing member 22 stops moving. At this time, under the push of the ejection mechanism of the injection molding machine, the second pushing member 24 continues to move, so that the second ejector rod 18 and the first ejector rod 17 are relatively displaced. In the process of the ejection mechanism of the injection molding machine pushing the second pushing member 24 to move toward the fixed mold frame 6, the second pushing member 24 pushes the second spring 25, so that the second spring 25 is in a compressed state. When the folding spoon is taken out and the ejection mechanism of the injection molding machine is reset, the second spring 25 stretches and pushes the second pushing member 24 to move in the opposite direction, and drives the second pushing member 24 to reset together with the ejection mechanism of the injection molding machine.

[0037] Furthermore, the first pushing member 22 and the second pushing member 24 both have a threadedly connected push rod fixing plate 27 and a push rod pushing plate 28, and the threaded connection between the push rod fixing plate 27 and the push rod pushing plate 28 can be achieved by bolts. The two push rod fixing plates 27 are respectively connected to the first push rod 17 and the second push rod 18 hanging platforms, and the two push rod pushing plates 28 are respectively movably abutted against the end surfaces of the first push rod 17 and the second push rod 18, so as to achieve the fixation of the first push rod 17 and the second push rod 18 on the first pushing member 22 and the second pushing member 24, respectively.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. An injection mold for a folding spoon, the folding spoon comprising a spoon body, a spoon handle and a spoon handle which are rotatably connected in sequence, both ends of the spoon handle having a clamping groove, the spoon body and the spoon handle both having a clamping portion which is movably clamped with the clamping groove, characterized in that: The injection mold comprises: A fixed mold frame, on which a middle insert and two first inserts symmetrically arranged on both sides of the middle insert are arranged, a first molding cavity is formed between the middle insert and the two first inserts, and the first molding cavity is vertically arranged to mold the spoon handle; a movable mold frame, which is movably matched with the fixed mold frame, the movable mold frame is provided with a second insert, a second molding cavity and a third molding cavity are formed between the second insert and the two first inserts, the first molding cavity, the second molding cavity and the third molding cavity are sequentially connected, the second molding cavity is horizontally arranged, and is used to mold the spoon handle, the angle between the third molding cavity and the direction of the movable mold frame pointing to the fixed mold frame is an acute angle, and the third molding cavity is used to mold the spoon body; Two third inserts are movably embedded in the second insert, and the two third inserts are respectively embedded in the first molding cavity and the second molding cavity, and the junction of the second molding cavity and the third molding cavity. The end faces of the two third inserts have convex parts for forming the clamping grooves, and the ends of the two third inserts away from each other are respectively embedded in the first molding cavity and the third molding cavity to form the two clamping parts.

2. An injection mold for a foldable spoon as claimed in claim 1, characterized in that: It also includes an ejection assembly arranged on one side of the movable mold frame, on which a first ejector rod and a second ejector rod are movably arranged, the end of the first ejector rod passes through the movable mold frame and abuts against the third insert, so as to eject the third insert out of the second insert, and the end of the second ejector rod sequentially passes through the movable mold frame and the third insert and is inserted into the second molding cavity, so as to eject the molded folding spoon away from the third insert.

3. An injection mold for a foldable spoon as claimed in claim 2, characterized in that: The ejection assembly comprises: Base plate; Two pads are spaced apart and arranged on the bottom plate, the other sides of the two pads are connected to the movable mold frame, and the opposite sides of the two pads are designed with limiting grooves; A first pushing member, which is movably arranged between the two pads and movably abuts against the limiting groove, and the first push rod is clamped on the first pushing member; A first spring, which is disposed between the first pusher and the backing plate and is in a compressed state when the movable mold frame and the fixed mold frame are in contact with each other; A second pushing member is movably disposed between the two pads and located between the first pushing member and the movable mold frame, and the second ejector rod is clamped on the second pushing member; The second spring is arranged between the second pushing member and the movable mold frame and is in a compressed state when the second push rod pushes the folding spoon away from the third insert.

4. An injection mold for a foldable spoon as claimed in claim 3, characterized in that: The first pushing member and the bottom plate are both provided with through holes, and the two through holes are coaxially arranged.

5. An injection mold for a foldable spoon as claimed in claim 3, characterized in that: The first pusher and the second pusher both have a threadedly connected push rod fixing plate and a push rod pushing plate, the two push rod fixing plates are respectively connected to the first push rod and the second push rod hanging platform, and the two push rod pushing plates are respectively movably abutted against the end surfaces of the first push rod and the second push rod.

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