Fastener of mold insert and mold

Abstract

The utility model relates to the technical field of dies, and discloses a fastener of a die insert, which is characterized in that a first stop key and a second stop key are respectively arranged on two sides of a middle plate and protrude along opposite directions, and when the fastener is used, the fastener is positioned between the insert and the cavity wall of a cavity of a die body; the first stop key is attached to the insert, the second stop key is attached to the cavity wall of the cavity, and the first stop key and the second stop key are located on the two sides of the middle plate, so that a gap is formed between the middle plate and the cavity wall of the cavity, namely, a gap is formed between the second stop key and the cavity wall of the cavity; when feeding is abnormal and the insert is subjected to strong impact force, the first stop key is close to the cavity wall of the cavity at the moment, the fastener structure is damaged, collapses and absorbs the impact force, and therefore the insert and the mold body are protected, and the safety of the mold is improved. The utility model further provides a die with the fastener.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a fastener for a mold insert and a mold. Background Technology

[0002] For thick plate parts with high tensile strength, the industry generally adopts a modular approach for the working parts of cold stamping dies to ensure continuous, stable, and efficient operation during production. Currently, the modular approach in dies typically involves assembling the individual inserts sequentially, then using standard fastening keys on the final insert to ensure a tight fit between all inserts and eliminate gaps.

[0003] In existing molds, all inserts fit together tightly, with rigid fits between inserts and the mold body, between inserts themselves, and between inserts and fastening keys. When problems such as incorrect material feeding occur, the stamping process continues uninterrupted. The rigid fit between the parts, mold body, inserts, and fastening keys, with no gaps, ensures that each insert remains in a stable position during operation, preventing movement and resulting in no surplus material. This leads to excessive force on the inserts, causing damage to the inserts or the mold body. For example, current stamping processes are mostly automated. The insertion and removal of parts during production rely on sensors at each stage to detect whether everything is normal, ensuring smooth production line operation. However, in automated production, occasional sensor malfunctions can occur, potentially leading to two parts being loaded into a single process, a phenomenon known in the industry as "double loading." If the press continues to operate in this situation, it can cause damage to the inserts or the mold body.

[0004] The prior art (CN204525976U) discloses an injection mold with marking function. The key technical points are: it includes a fixed mold and an insert; the fixed mold has several cavities; one side of the insert has a notch consistent with the contour of the inner wall of the cavity; the notch has a raised and recessed portion for marking; and its key feature is that the fixed mold has a slot for engaging the insert; the side of the insert away from the notch is outside the cavity, and a fastener is inserted on the side of the insert away from the notch; the insert is detachably and fixedly connected to the fixed mold via the fastener. The slot design enhances the stability of the insert; during repeated opening and closing of the mold, the slot can omnidirectionally confine the insert, preventing deflection. The fastener ensures the insert is stably positioned within the slot and will not fall out. The fastener allows the insert to be removed when needed for replacement and to be fixed during production. The fasteners in this patent firmly fix the inserts in the mold cavity. When a part malfunctions, the part, inserts, fasteners and mold body are rigidly connected, which cannot eliminate the stress, causing the inserts or mold body to be damaged. Utility Model Content

[0005] The purpose of this invention is to provide a fastener and mold for a mold insert with high safety.

[0006] To achieve the above objectives, this utility model provides a fastener for a mold insert, including a first stop key, a second stop key, and an intermediate plate. The first stop key and the second stop key are disposed on both sides of the intermediate plate, and the first stop key and the second stop key protrude from the side of the intermediate plate in opposite directions.

[0007] As a preferred embodiment, the projections of the first stop key and the second stop key on the intermediate plate do not overlap.

[0008] As a preferred embodiment, there are two second stop buttons, which are located on the same side of the intermediate plate and on both sides of the first stop button.

[0009] As a preferred embodiment, the system further includes an overlap plate located above the intermediate plate, connected to the intermediate plate, and perpendicular to the intermediate plate. The width of the overlap plate is greater than the thickness of the intermediate plate, forming an L-shaped structure with the intermediate plate. The overlap plate extends relative to the intermediate plate toward the side where the second stop key is located.

[0010] As a preferred embodiment, the lap plate is provided with connecting holes that penetrate its top and bottom surfaces.

[0011] As a preferred embodiment, the projection of the first stop key onto the plane where the overlapping plate is located does not coincide with the overlapping plate.

[0012] As a preferred embodiment, both the first stop key and the second stop key are perpendicular to the overlapping plate.

[0013] As a preferred embodiment, the first key is provided with stress concentration holes.

[0014] As a preferred embodiment, the bottom of the second stop key is provided with a bevel.

[0015] This utility model also provides a mold, including a mold body, an insert and the fasteners mentioned above. The mold body has a cavity, the insert and the fasteners are placed in the cavity, and the fasteners are located between the insert and the cavity wall. The first stop key is in contact with the insert, and the second stop key is in contact with the cavity wall.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention features a first stop key and a second stop key on both sides of an intermediate plate, protruding in opposite directions. During use, the fastener is positioned between the insert and the cavity wall of the mold body, filling the gap between them and serving to position the insert. The first stop key is in contact with the insert, and the second stop key is in contact with the cavity wall. Because the first and second stop keys are located on opposite sides of the intermediate plate, there is a gap between the intermediate plate and the cavity wall, specifically between the second stop key and the cavity wall. When a feeding anomaly occurs and the insert is subjected to a strong impact, the first stop key, close to the cavity wall, causes the fastener structure to collapse, absorbing the impact and protecting both the insert and the mold body, thus improving mold safety. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the fastener of the mold insert according to an embodiment of the present utility model.

[0019] Figure 2 This is a first-view structural schematic diagram of the fastener of the mold insert according to an embodiment of the present utility model.

[0020] Figure 3 This is a wireframe diagram of the fastener of the mold insert according to an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the mold structure according to an embodiment of the present utility model.

[0022] In the figure, 1-first keyway; 101-stress concentration hole; 2-second keyway; 201-sloping surface; 3-intermediate plate; 301-second mounting hole; 4-lap plate; 401-connecting hole; 402-through hole; 5-mold body; 501-cavity; 6-insert; 7-mounting bolt. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0024] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] Example 1

[0028] like Figures 1 to 4 As shown, a fastener for a mold insert according to a preferred embodiment of the present invention includes a first stop key 1, a second stop key 2 and an intermediate plate 3. The first stop key 1 and the second stop key 2 are disposed on both sides of the intermediate plate 3, and the first stop key 1 and the second stop key 2 protrude from the side of the intermediate plate 3 in opposite directions. In this embodiment, a first stop key 1 and a second stop key 2 are respectively provided on both sides of the intermediate plate 3. The first stop key 1 and the second stop key 2 protrude in opposite directions. In use, the fastener is located between the insert 6 and the cavity wall of the mold body 5 cavity 501, filling the gap between the insert 6 and the mold body 5, and playing the role of positioning the insert 6. The first stop key 1 is attached to the insert 6, and the second stop key 2 is attached to the cavity wall of the cavity 501. Since the first stop key 1 and the second stop key 2 are located on both sides of the intermediate plate 3, there is a gap between the intermediate plate 3 and the cavity wall of the cavity 501, that is, there is a gap between the second stop key 2 and the cavity wall of the cavity 501. When an abnormal feeding occurs, the insert 6 is subjected to a strong impact force. At this time, the first stop key 1 is close to the cavity wall of the cavity 501, the fastener structure is damaged, and it collapses, absorbing the impact force, thereby protecting the insert 6 and the mold body 5 and improving the safety of the mold.

[0029] Furthermore, the projections of the first stop key 1 and the second stop key 2 on the intermediate plate 3 do not coincide. This means that the second stop key 2 lacks support behind the first stop key 1, making the fastener more susceptible to damage and achieving collapse-induced energy absorption. It should be noted that the edge distance between the first stop key 1 and the second stop key 2 in both the length and width directions of the intermediate plate 3 is greater than or equal to zero.

[0030] Furthermore, in this embodiment, two second stop keys 2 are provided, located on the same side of the intermediate plate 3, and on either side of the first stop key 1. Using two second stop keys 2 makes the fastener support more stable. During collapse, the first stop key 1, located in the middle position, approaches the cavity wall of the cavity 501 until it is crushed, thus absorbing energy and protecting the insert 6 and the mold body 5.

[0031] Optionally, the fastener can be a rigid part or an elastic part. When the fastener is a rigid part, it can be a steel part or a cast iron part, etc. When the fastener is an elastic part, it can be a rubber part, etc.

[0032] Example 2

[0033] The difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, this embodiment further explains the structure of the fastener.

[0034] In this embodiment, the fastener also includes an overlapping plate 4, which is located above the intermediate plate 3. The overlapping plate 4 is connected to the intermediate plate 3 and is perpendicular to the intermediate plate 3. The width of the overlapping plate 4 is greater than the thickness of the intermediate plate 3, forming an L-shaped structure with the intermediate plate 3. The overlapping plate 4 extends relative to the intermediate plate 3 towards the side where the second stop key 2 is located. In use, the overlapping plate 4 is located at the edge of the cavity 501. The first stop key 1, the intermediate plate 3, and the second stop key 2 are inserted between the insert 6 and the cavity wall of the cavity 501. The overlapping plate 4 serves a positioning function and facilitates the insertion and removal of the fastener.

[0035] Furthermore, the overlapping plate 4 is provided with a connecting hole 401 penetrating its top and bottom surfaces. The connecting hole 401 allows the overlapping plate 4 to be connected to the mold body 5 via mounting bolts 7. The mold body 5 is provided with a first mounting hole, which is located along the edge of the cavity 501. The mounting bolts 7 pass through the connecting hole 401 and are threaded into the first mounting hole, thereby achieving the connection between the overlapping plate 4 and the mold body 5, and thus positioning the fasteners.

[0036] Furthermore, in this embodiment, the projection of the first stop key 1 onto the plane where the lap plate 4 is located does not coincide with the lap plate 4. That is, the first stop key 1 is not connected to the lap plate 4, and the lap plate 4 does not provide support for the first stop key 1, thereby making the first stop key 1 more easily damaged and improving the collapse energy absorption performance.

[0037] Specifically, both the first stop key 1 and the second stop key 2 are perpendicular to the overlapping plate 4. This facilitates manufacturing and ensures that the first stop key 1 is in close contact with the insert 6 and the second stop key 2 is in close contact with the cavity wall of the cavity 501, thus guaranteeing the positioning and fastening function of the insert 6.

[0038] In this embodiment, two second stop keys 2 are provided, located on the same side of the intermediate plate 3. The two second stop keys 2 are situated on either side of the first stop key 1. The overlapping plate 4 has a U-shaped structure, with its protruding portion connecting to the intermediate plate 3. The U-shaped design of the overlapping plate 4 reduces its support for the first stop key 1, and since only its protruding portion connects to the intermediate plate 3, the small connection area makes the fasteners more prone to collapse. In this embodiment, the overlapping plate 4 and the intermediate plate 3 are detachably connected. Specifically, the overlapping plate 4 is connected to the intermediate plate 3 via connecting bolts. The intermediate plate 3 has a second mounting hole 301, and the overlapping plate 4 has a through hole 402. The connecting bolts pass through the through hole 402 and are threaded into the second mounting hole 301.

[0039] The first stop key 1, the second stop key 2, and the intermediate plate 3 are manufactured as a single piece, formed by three blocks staggered front to back. The portion where the left and right blocks overlap with the middle block in the left-right direction forms the intermediate plate 3, and the staggered protruding portion forms the first stop key 1 and the second stop key 2. At this point, the distance between the first stop key 1 and the second stop key 2 in the length direction of the intermediate plate 3 is zero. It should be noted that the first stop key 1 and the second stop key 2 are protruding portions integrally formed on the intermediate plate 3, and the distance between the first stop key 1 and the second stop key 2 in the length direction of the intermediate plate 3 is greater than zero.

[0040] In addition, the bottom of the second stop key 2 in this embodiment is provided with a bevel 201, which makes it easier for the fastener to be inserted between the insert 6 and the cavity wall of the cavity 501.

[0041] Furthermore, the first stop key 1 is provided with a stress concentration hole 101, which makes the first stop key 1 more likely to collapse and absorb energy when the insert 6 is impacted. The stress concentration hole 101 can also be provided on the first stop key 1 and the intermediate plate 3, with the first stop key 1 having a first half-hole and the intermediate plate 3 having a second half-hole, the first half-hole and the second half-hole forming a hole. In this embodiment, the second mounting hole 301 is also provided on the intermediate plate 3 with the upper half-hole and the half-hole provided on the second stop key 2 forming a hole.

[0042] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here.

[0043] Example 3

[0044] like Figure 4As shown, a mold according to a preferred embodiment of the present invention includes a mold body 5, an insert 6, and a fastener according to Embodiment 1 or Embodiment 2. The mold body 5 is provided with a cavity 501, the insert 6 and the fastener are placed in the cavity 501, and the fastener is located between the insert 6 and the cavity wall of the cavity 501. The first stop key 1 is attached to the insert 6, and the second stop key 2 is attached to the cavity wall of the cavity 501.

[0045] In this embodiment, the overlapping plate 4 is connected to the mold body 5 by mounting bolts 7. The mold body 5 is provided with a first mounting hole, which is set along the edge of the cavity 501. The mounting bolts 7 pass through the connecting hole 401 and are threadedly connected to the first mounting hole, thereby realizing the connection between the overlapping plate 4 and the mold body 5, and thus positioning the fastener.

[0046] The structure of the fastener in this embodiment is the same as that described in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0047] In summary, this utility model embodiment provides a fastener for a mold insert. It features a first stop key 1 and a second stop key 2 on both sides of an intermediate plate 3, protruding in opposite directions. During use, the fastener is positioned between the insert 6 and the cavity wall of the mold body 501, filling the gap between the insert 6 and the mold body 5, thus positioning the insert 6. The first stop key 1 is in contact with the insert 6, and the second stop key 2 is in contact with the cavity wall of the cavity 501. Because the first stop key 1 and the second stop key 2 are located on both sides of the intermediate plate 3, there is a gap between the intermediate plate 3 and the cavity wall of the cavity 501, specifically between the second stop key 2 and the cavity wall of the cavity 501. When a feeding abnormality occurs and the insert 6 is subjected to a strong impact, the first stop key 1 approaches the cavity wall of the cavity 501, causing the fastener structure to collapse and absorb the impact force, thereby protecting the insert 6 and the mold body 5 and improving the mold's safety. This embodiment of the invention also provides a mold, including a mold body 5, an insert 6, and the aforementioned fasteners. The mold body 5 has a cavity 501, and the insert 6 and fasteners are placed in the cavity 501. The fasteners are located between the insert 6 and the cavity wall of the cavity 501, and the first stop key 1 is in contact with the insert 6, while the second stop key 2 is in contact with the cavity wall of the cavity 501. Using the mold of this embodiment, in the event of abnormal material feeding, the fasteners will collapse and absorb energy, thus protecting the insert 6.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A fastener for a mold insert, characterized by, It includes a first stop key (1), a second stop key (2) and a middle plate (3). The first stop key (1) and the second stop key (2) are located on both sides of the middle plate (3), and the first stop key (1) and the second stop key (2) protrude from the side of the middle plate (3) in opposite directions.

2. The mold insert fastener of claim 1, wherein, The projections of the first stop key (1) and the second stop key (2) on the intermediate plate (3) do not coincide.

3. The mold insert fastener of claim 1, wherein, The second stop key (2) is set to two, and the two second stop keys (2) are located on the same side of the middle plate (3), and the two second stop keys (2) are located on both sides of the first stop key (1).

4. The mold block fastener of claim 1, wherein, It also includes an overlap plate (4), which is located above the intermediate plate (3). The overlap plate (4) is connected to the intermediate plate (3) and is perpendicular to the intermediate plate (3). The width of the overlap plate (4) is greater than the thickness of the intermediate plate (3), so that the overlap plate (4) and the intermediate plate (3) form an L-shaped structure. The overlap plate (4) extends relative to the intermediate plate (3) toward the side where the second stop key (2) is located.

5. The mold insert fastener of claim 4, wherein, The overlapping plate (4) is provided with connecting holes (401) that penetrate its top and bottom surfaces.

6. The mold insert fastener of claim 4, wherein, The projection of the first stop key (1) onto the plane where the overlapping plate (4) is located does not coincide with the overlapping plate (4).

7. The mold insert fastener of claim 4, wherein, Both the first stop key (1) and the second stop key (2) are perpendicular to the overlapping plate (4).

8. The fastener for a mold insert of claim 1, wherein, The first key (1) is provided with a stress concentration hole (101).

9. The fastener for a mold insert of claim 7, wherein, The bottom of the second stop key (2) is provided with a slope (201).

10. A mold characterized in that, The mold body (5), insert (6), and fastener as described in any one of claims 1-9 are provided. The mold body (5) is provided with a cavity (501). The insert (6) and the fastener are placed in the cavity (501). The fastener is located between the insert (6) and the cavity wall of the cavity (501). The first stop key (1) is attached to the insert (6), and the second stop key (2) is attached to the cavity wall of the cavity (501).

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