A key product mold

Abstract

The present invention discloses a key product mold, which relates to the field of molds, including a front mold core, a rear mold core and an insert. The front mold core and the rear mold core are combined to form a key injection space inside. The rear mold core is provided with a convex block, and the convex block is located in the key injection space; the rear mold core is provided with a mounting position for installing the insert, and the mounting position is located below the convex block. The insert is installed on the mounting position, and the convex block is provided with a contact bone position through hole, and the contact bone position through hole passes through the convex block, and the contact bone position through hole is connected with the inside of the mounting position; the insert is provided with a contact bone position groove on the end surface close to the contact bone position through hole. The key product mold can effectively solve the problems of air entrapment and burrs in the contact bone position of key products.

Description

Technical Field

[0001] The invention relates to the field of moulds, and in particular to a key product mould. Background Art

[0002] Key products are important plastic accessories for smart Bluetooth speakers. Key products are assembled on the host decorative parts of smart Bluetooth speakers. Key products can be used as the power button, volume adjustment button, etc. of smart Bluetooth speakers. Key products include contact bones. The contact position in the contact bones is an important factor affecting the key function of key products. The shape and size of the contact position in the contact bones have a direct impact on the key function. In existing key products, the following problems are prone to occur: the height of the contact bones of existing key products is generally 5mm-8mm. Therefore, when manufacturing key products, it is easy to trap air during injection molding of deep bones, which can easily cause glue shortage in the contact bones. In order to solve the above situation, inserts must be added to the mold for manufacturing key products. At present, there are molds for manufacturing key products with added inserts on the market. However, the current molds for manufacturing key products with added inserts are not mature enough and cannot meet the mass production and stability of key products. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a key product mold, which can effectively solve the problems of air trapping and burrs at the contact bone position of the key product.

[0004] The present invention is implemented by the following technical solutions:

[0005] A key product mold comprises a front mold core, a rear mold core and an insert, wherein the front mold core and the rear mold core are combined to form a key injection space inside, the rear mold core is provided with a protrusion, and the protrusion is located in the key injection space; the rear mold core is provided with a mounting position for installing the insert, the mounting position is located below the protrusion, the insert is installed on the mounting position, the protrusion is provided with a contact bone through hole, the contact bone through hole passes through the protrusion, and the contact bone through hole is connected with the inside of the mounting position; a contact bone groove is provided on the end surface of the insert close to the contact bone through hole, and the horizontal contour edge of the contact bone groove at one end close to the contact bone through hole is indented by 0.005mm-0.2mm compared with the horizontal contour edge of the contact bone through hole at one end close to the insert.

[0006] Preferably, the depth of the contact bone groove is 0.1 mm-2 mm.

[0007] Preferably, the horizontal contour edge of one end of the contact bone site groove near the contact bone site through hole is retracted by 0.05 mm compared with the horizontal contour edge of one end of the contact bone site through hole near the insert.

[0008] Preferably, the cross-sections of the contact bone position through hole and the contact bone position groove are both in a cross shape.

[0009] Preferably, the contact bone position through hole is gradually reduced in lateral size from an end close to the front mold core to an end close to the rear mold core.

[0010] Preferably, the insert includes an insert head and an insert tail, the insert head is connected to the insert tail, the insert head is flat, the insert tail is long, the cross-sectional area of ​​the insert head is larger than the cross-sectional area of ​​the insert tail, and the contact bone groove is arranged on the end face of the insert tail away from the insert head.

[0011] Preferably, the mounting position includes a first accommodating cavity for accommodating the head of the insert and a second accommodating cavity for accommodating the tail of the insert, the second accommodating cavity and the tail of the insert are both cylindrical, the second accommodating cavity and the tail of the insert have the same radius, and the length and width of the tail of the insert are respectively larger than the length and width of the contact bone position through hole near one end of the insert.

[0012] Preferably, the contact bone slot is arranged so that its lateral size gradually decreases from an end away from the insert head to an end close to the insert head.

[0013] Preferably, the depth of the contact bone position through hole is greater than the height of the protrusion.

[0014] Preferably, an injection hole is provided on the rear mold core, and the injection hole is connected to the key injection space.

[0015] Compared with the prior art, the beneficial effect of the present invention lies in that a contact bone position groove is arranged on the end face of the insert near the contact bone position through hole in the key product mold of the present invention, and the horizontal contour edge of the contact bone position groove near the contact bone position through hole is compared with the horizontal contour edge of the contact bone position through hole near the insert, and the horizontal contour edge of the contact bone position groove near the contact bone position through hole is retracted by 0.005mm-0.2mm. Even if there are slight burrs on the manufactured key product, it does not affect the assembly effect of the key product. The contact position of the key product manufactured by the key product mold of the present invention is flat, which meets the mass productivity and stability of the key product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of a key product mold in an embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the structure of the rear mold core in an embodiment of the present invention.

[0018] Figure 3 It is a front view of the rear mold core in an embodiment of the present invention.

[0019] Figure 4 It is a three-dimensional diagram of the insert in the embodiment of the present invention.

[0020] Figure 5 This is a schematic front view of a product manufactured by a key product mold in an embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the back side of a product manufactured by a key product mold in an embodiment of the present invention.

[0022] Figure numerals: 1, front mold core; 2, rear mold core; 3, insert; 4, key injection space; 5, bump; 6, mounting position; 7, contact bone position through hole; 8, insert head; 9, insert tail; 10, contact bone position groove. DETAILED DESCRIPTION

[0023] Combine the following Figure 1-6 The technical solution provided by the invention is explained in more detail.

[0024] like Figure 1-6 As shown, an embodiment of the present invention provides a key product mold, including a front mold core 1, a rear mold core 2 and an insert 3. The front mold core 1 and the rear mold core 2 are combined to form a key injection space 4 inside. The rear mold core 2 is provided with an injection hole, which is connected to the key injection space 4. There are four key injection spaces 4 in total. Twelve protrusions 5 are provided on the rear mold core 2. The twelve protrusions 5 are divided into four groups of three. The four groups of protrusions 5 are respectively located in the four key injection spaces 4.

[0025] The rear mold core 2 is provided with mounting positions 6 for installing the inserts 3, and there are twelve mounting positions 6 in total. The mounting positions 6 correspond one-to-one to the protrusions 5, and the mounting positions 6 are located below the protrusions 5. The inserts 3 correspond one-to-one to the mounting positions 6, and the inserts 3 are installed on the mounting positions 6. The protrusions 5 are provided with contact bone position through holes 7. The depth of the contact bone position through holes 7 is greater than the height of the protrusions 5. The cross-section of the contact bone position through holes 7 is in a cross shape. The lateral size of the contact bone position through holes 7 gradually decreases from one end close to the front mold core to the end close to the rear mold core. The contact bone position through holes 7 penetrate the protrusions 5, and the contact bone position through holes 7 are connected to the inside of the mounting positions 6.

[0026] The insert 3 includes an insert head 8 and an insert tail 9, the insert head 8 is connected to the insert tail 9, the insert head 8 and the insert tail 9 are integrally formed, the insert head 8 is flat, the insert tail 9 is long, the cross-sectional area of ​​the insert head 8 is larger than the cross-sectional area of ​​the insert tail 9, and the contact bone position groove 10 is arranged on the end surface of the insert tail 9 away from the insert head 8. The mounting position 6 includes a first accommodating cavity for accommodating the insert head 8 and a second accommodating cavity for accommodating the insert tail 9, the second accommodating cavity and the insert tail 9 are both cylindrical, the second accommodating cavity and the insert tail 9 have the same radius, and the length and width of the insert tail 9 are respectively larger than the length and width of the contact bone position through hole 7 near the end of the insert 3. The contact bone position groove 10 is gradually reduced in lateral size from the end away from the insert head 8 to the end near the insert head 8.

[0027] A contact bone position groove 10 is arranged on the end face of the insert 3 near the contact bone position through hole 7. The cross section of the contact bone position groove 10 is in a cross shape. The depth of the contact bone position groove 10 is 0.5 mm. The horizontal contour edge of the contact bone position groove 10 is retracted by 0.05 mm compared with the horizontal contour edge of the contact bone position through hole 7 at one end near the insert 3.

[0028] The advantages of the key product mold in this embodiment are as follows: a contact bone position groove 10 is arranged on the end face of the insert 3 in the key product mold of the present invention near the contact bone position through hole 7, and the horizontal contour edge of the contact bone position groove 10 near the contact bone position through hole 7 is compared with the horizontal contour edge of the contact bone position through hole 7 near the insert 3. The horizontal contour edge of the contact bone position groove 10 near the contact bone position through hole 7 is retracted by 0.05mm. Even if there are slight burrs on the manufactured key product, it does not affect the assembly effect of the key product. The contact position of the key product manufactured by the key product mold of the present invention is flat, which meets the mass productivity and stability of the key product.

[0029] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A key product mold, Features: It comprises a front mold core, a rear mold core and an insert, wherein the front mold core and the rear mold core are combined to form a key injection space inside, the rear mold core is provided with a protrusion, and the protrusion is located in the key injection space; the rear mold core is provided with a mounting position for installing the insert, the mounting position is located below the protrusion, the insert is installed on the mounting position, the protrusion is provided with a contact bone through hole, the contact bone through hole passes through the protrusion, and the contact bone through hole is connected with the inside of the mounting position; a contact bone groove is provided on the end surface of the insert close to the contact bone through hole, and the horizontal contour edge of the contact bone groove at one end close to the contact bone through hole is indented by 0.005mm-0.2mm compared with the horizontal contour edge of the contact bone through hole at one end close to the insert.

2. The key product mold according to claim 1, Features: The depth of the contact bone groove is 0.1mm-2mm.

3. The key product mold according to claim 1, Features: The horizontal contour edge of one end of the contact bone slot near the contact bone through hole is shrunk by 0.05 mm compared to the horizontal contour edge of one end of the contact bone through hole near the insert.

4. The key product mold according to claim 1, Features: The cross-sections of the contact bone position through hole and the contact bone position groove are both in a cross shape.

5. The key product mold according to claim 1, Features: The contact bone position through hole is arranged to gradually reduce in transverse size from an end close to the front mold core to an end close to the rear mold core.

6. The key product mold according to claim 1, Features: The insert includes an insert head and an insert tail, the insert head is connected to the insert tail, the insert head is flat, the insert tail is long, the cross-sectional area of ​​the insert head is larger than the cross-sectional area of ​​the insert tail, and the contact bone position groove is arranged on the end surface of the insert tail away from the insert head.

7. The key product mold according to claim 6, Features: The mounting position includes a first accommodating cavity for accommodating the head of the insert and a second accommodating cavity for accommodating the tail of the insert. The second accommodating cavity and the tail of the insert are both cylindrically arranged. The radius of the second accommodating cavity and the tail of the insert are the same. The length and width of the tail of the insert are respectively greater than the length and width of the contact bone position through hole near one end of the insert.

8. The key product mold according to claim 6, Features: The contact bone slot is arranged to gradually reduce in transverse dimension from an end away from the insert head to an end close to the insert head.

9. The key product mold according to claim 1, Features: The depth of the contact bone position through hole is greater than the height of the protrusion.

10. The key product mold according to claim 1, Features: The rear mold core is provided with an injection hole, and the injection hole is communicated with the key injection space.

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