Diamond pattern traceless injection mold

Abstract

The utility model provides a diamond pattern traceless injection mold which comprises an upper mold and a lower mold, and the upper mold comprises an upper mold core; the lower mold comprises a lower mold core, a mold core and at least two slide assemblies, each slide assembly comprises a slide part, a sliding part and a driving part, the mold core is arranged on the lower mold core and located among all the slide parts, an annular cavity is defined by all the slide parts and the mold core, the driving parts are connected with the upper mold, and the slide parts are connected with the sliding parts. The driving piece can drive the sliding piece and the slide piece to move in the direction perpendicular to the mold opening direction. Arc-shaped parts with diamond patterns are arranged at the ends, facing the cavity, of the slide pieces, clinging parts are arranged on at least one sides of the arc-shaped parts of the slide pieces, the clinging parts of every two adjacent slide pieces are attached together, a plurality of planes are arranged on the clinging parts, the planes extend along the attaching lines of every two adjacent slide pieces, and a plurality of diamond patterns are arranged on the planes. The plurality of planes are arranged along the lines of the diamond lines; according to the utility model, the diamond lines can be prevented from being broken by the slide lines, and the continuity of the diamond lines is ensured.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a diamond pattern seamless injection mold. Background Art

[0002] Some plastic products, such as knobs, have diamond patterns on their outer surfaces. Due to the structure of the knobs, the appearance requirements are very high. The diamond patterns must be obvious, but they must not scratch hands.

[0003] During the injection molding process of the existing knob, due to design problems, obvious line is generally formed on the surface of the knob, which affects the continuity and aesthetics of the diamond pattern of the knob. Summary of the invention

[0004] The utility model aims to provide a diamond pattern seamless injection mould which can avoid the row and position lines from interrupting the diamond pattern.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a diamond-patterned seamless injection mold, comprising an upper mold and a lower mold, the upper mold comprising an upper mold core; the lower mold comprising a lower mold core, a mold core and at least two slide assemblies, the slide assembly comprising a slide member, a sliding member and a driving member, all of the slide members are arranged between the upper mold core and the lower mold core, the mold core is arranged on the lower mold core and arranged between all the slide members, an annular chamber is enclosed between all the slide members and the mold core, the driving member is connected to the upper mold, the slide member is connected to the sliding member, and the sliding member is slidably connected to the driving member, when the mold is opened, the driving member can drive the sliding member and the slide member to move along a direction perpendicular to the mold opening direction; the slide member is provided with an arc portion at one end facing the chamber, the arc portion is provided with a diamond pattern, the slide member is provided with a close-fitting portion on at least one side of the arc portion, the close-fitting portions of two adjacent slide members are bonded together, a plurality of planes are provided on the close-fitting portion, the planes extend along the bonding line of two adjacent slide members, and the plurality of planes are arranged along the lines of the diamond pattern.

[0006] It can be seen from the above scheme that by arranging diamond patterns on the arc-shaped portion, diamond patterns can be formed on the surface of the product; by arranging multiple planes between the close-fitting portions of two adjacent positioning members, and the multiple planes are arranged along the patterns of the diamond patterns, on the one hand, the two adjacent close-fitting portions can be closely matched, and on the other hand, the positioning lines of the product after molding extend along the patterns of the diamond patterns, thereby achieving the purpose of hiding the positioning lines and avoiding the positioning lines interrupting the patterns of the diamond patterns, which is beneficial to improving the continuity of the diamond patterns and the aesthetics of the products.

[0007] A further solution is that the diamond pattern includes a plurality of polygonal patterns arranged in an array, and an edge line at one end of the plane constitutes a side of the polygonal pattern.

[0008] A further solution is that the upper mold core is provided with an annular groove connected to the cavity, and the annular groove and the cavity form a product cavity.

[0009] A further solution is that the slider is provided with two protrusions arranged in the axial direction of the arc-shaped portion, the diamond pattern is provided between the two protrusions, and one of the protrusions is provided between the annular groove and the chamber and extends into the chamber.

[0010] A further solution is that the sliding member is provided with an inclined slot on one end facing away from the sliding member, and the inclined slot extends outwardly along the mold opening direction; an inclined sliding block is provided on one side of the driving member, and the inclined sliding block is slidably connected to the inclined slot.

[0011] It can be seen from the above scheme that by setting the inclined sliding block and the inclined sliding groove to slide together, when the mold is opened, the driving member can directly drive the sliding member and the sliding member to move along the vertical mold opening direction, so that the sliding member is separated from the product, which is convenient for demolding.

[0012] A further solution is that the lower mold is provided with a fixing part on at least one side of the sliding member, and an elastic component is provided on the fixing part, and one end of the elastic component elastically protrudes out of the surface of the fixing part; two positioning grooves are provided on the side wall of the sliding member or the sliding member, and the two positioning grooves are arranged along the moving direction of the sliding member and spaced by a preset distance, and one end of the elastic component can be embedded in any positioning groove.

[0013] It can be seen from the above scheme that the preset distance is equal to the spacing between position one of the sliding member when the mold is closed and position two of the sliding member when the product is ejected. By setting one end of the elastic component to be able to be embedded in any positioning groove, it is beneficial to limit the two end point positions on the moving path of the sliding member and ensure the accuracy of its moving position.

[0014] A further solution is that the mold core is provided with a first glue inlet channel and a second glue inlet channel, the first glue inlet channel extends from the middle of the mold core end wall along the radial direction of the mold core, the first end of the second glue inlet channel is connected to the first glue inlet channel, the second end of the second glue inlet channel extends obliquely and passes through the outer peripheral wall of the mold core, and the second end of the second glue inlet channel is connected to the chamber.

[0015] It can be seen from the above scheme that by setting the second end of the second glue inlet channel to extend obliquely and pass through the outer peripheral wall of the mold core and connect with the chamber, after the mold is opened, when the product and the sprue material are pushed upward, the channel wall of the second glue inlet channel can automatically separate the sprue material and the product, which is beneficial to save the subsequent operation of cutting the sprue material.

[0016] A further solution is that a protrusion is provided on one end of the first glue inlet flow channel close to the second glue inlet flow channel.

[0017] It can be seen from the above scheme that by setting the raised portion, after the product is formed, a groove is formed on the sprue material formed in the first glue inlet channel, so that when the product and the sprue material are demolded, the sprue material formed in the second glue inlet channel will not bounce upward due to deformation, which is beneficial to avoid the sprue material from damaging the product.

[0018] A further solution is that an ejector is provided in the mold core, the ejector extends obliquely along the mold opening direction, a supporting portion is provided on one end of the ejector, the supporting portion extends to the end of the cavity, and when the mold is opened, the ejector can push the product in the cavity to move toward the upper mold direction.

[0019] A further solution is that an ejector pin is further arranged in the mold core, and the ejector pin is arranged corresponding to the first glue inlet flow channel. When the mold is opened, the ejector pin can push the sprue material in the first glue inlet flow channel to move toward the upper mold direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of an embodiment of the utility model.

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0022] Figure 3 It is a structural diagram of the lower mold and slide assembly in an embodiment of the utility model.

[0023] Figure 4 It is a structural diagram of an upper die core, a slide assembly and a lower die core in an embodiment of the utility model.

[0024] Figure 5 It is an exploded view of the upper die core, the slide assembly and the lower die core in the embodiment of the utility model.

[0025] Figure 6 It is a cross-sectional view of the upper die core, the slide assembly and the lower die core in the embodiment of the utility model.

[0026] Figure 7 It is a structural diagram of the mold core and two slide components in the embodiment of the utility model.

[0027] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0028] Fig. 9 It is a structural diagram of the mold core in the embodiment of the utility model.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0030] See also Figures 1 to 3The present embodiment provides a diamond pattern seamless injection mold, comprising an upper mold and a lower mold. The upper mold comprises a top plate 10, a diverter plate 20, an upper mold seat 30 and an upper mold plate 40 from top to bottom, and at least one upper mold core 1 is arranged on the upper mold plate 40. The lower mold comprises a bottom plate 50, a first ejector plate 60, a second ejector plate 70 and a lower mold plate 80 from bottom to top, and a lower mold core 2 is arranged on the lower mold plate 80 corresponding to each upper mold core 1. In the present embodiment, four upper mold cores 1 and four lower mold cores 2 are arranged to form four independent product cavities. The mold of the present embodiment can form four products 7 at one time. A glue inlet is arranged on the upper mold, and a plurality of branch flow channels are arranged on the diverter plate 20. Each product cavity corresponds to at least one branch flow channel, and the glue inlet is connected to the product cavity through the branch flow channel.

[0031] See also Figures 4 to 8 , and combined with Figure 2 , the lower mold is provided with a mold core 3, an ejection assembly 4 and at least two slide assemblies 5 corresponding to each product cavity. In this embodiment, three slide assemblies 5 are taken as an example. The slide assembly 5 includes a slide member 51, a sliding member 52 and a driving member 53. The three sliding members 51 are arranged between the upper mold core 1 and the lower mold core 2 and enclose a circle. The mold core 3 is arranged on the lower mold core 2 and between the three slide members 51. The three slide members 51 and the mold core 3 enclose an annular chamber 6. The driving member 53 is connected to the upper mold, the slide member 51 is connected to the sliding member 52, and the driving member 52 is slidably connected to the sliding member 52. When the mold is opened, the upper mold is separated from the lower mold, so that the driving member 53 and the sliding member 52 slide relative to each other, so as to drive the sliding member 52 and the slide member 51 to move back to the chamber 6 along the vertical mold opening direction, so that the slide member 51 is separated from the product 7.

[0032] The slider 51 is provided with an arc portion 511 at one end facing the chamber 6, and the arc portion 511 is provided with diamond patterns, and the patterns of the diamond patterns are provided according to the patterns of the outer peripheral wall of the product 7. In other embodiments, other uneven patterns may also be provided on the arc surface provided on the arc portion 511. The slider 51 is provided with a close-fitting portion on both sides of the arc portion 511, and the close-fitting portions of two adjacent sliders 51 are closely fitted together.

[0033] The close-fitting portion is provided with a plurality of planes 512, the planes 512 extending along the fitting line of two adjacent slide members 51, and the plurality of planes 512 are arranged along the pattern of the diamond pattern. The diamond pattern includes a plurality of arranged polygonal patterns, and the polygonal pattern can be a triangle or a quadrilateral or a combination thereof. The edge line of the plane 512 at one end close to the chamber 6 constitutes one side of the polygonal pattern.

[0034] exist Figure 2 In the figure, the upper mold core 1 is provided with an annular groove 11 communicating with the cavity 6 on the side facing the cavity 6, the annular groove 11 is coaxially arranged with the mold core 3, and the annular groove 11 and the cavity 6 form a product cavity.

[0035] Combination Figure 2 and Figure 8 The slider 51 is provided with two protrusions 513 arranged in the axial direction of the arc-shaped portion 511, the diamond pattern is provided between the two protrusions 513, the upper protrusion 513 is provided between the annular groove 11 and the chamber 6 and extends into the chamber 6 to form a first annular groove on the upper part of the product 7. The lower protrusion 513 is embedded in the chamber 6 to form a second annular groove on the lower part of the product 7.

[0036] Combination Figure 1 , Figure 5 and Figure 6 The sliding member 52 is provided with an inclined groove 521 on the end thereof facing away from the sliding member 51. The inclined groove 521 extends obliquely outward and downward along the mold opening direction, and the cross-sectional shape of the inclined groove 521 is set to be "T"-shaped. The upper part of the driving member 53 is connected to the upper mold plate 40 through a connecting member, and an inclined slider 531 is provided on one side of the driving member 53. The inclined slider 531 and the inclined groove 521 are matched with each other in a concave-convex manner and are slidably connected. When the mold is opened, the driving member 53 slides relative to the sliding member 52, and with the cooperation of the inclined slider 531 and the inclined groove 521, the sliding member 52 and the sliding member 51 are driven to translate outward along the vertical mold opening direction. In other embodiments, an inclined slider may be provided on the sliding member 52, and an inclined groove may be provided on the driving member 53. The inclined slider and the inclined groove are matched with each other in a concave-convex manner and are slidably connected.

[0037] The lower mold is provided with fixing members 8 on both sides of the slide assembly 5, and a limiting groove for limiting the moving direction of the sliding member 52 is provided between the two fixing members 8. An elastic member 81 is provided on at least one fixing member 8, and the elastic member 81 is preferably a spring wave ball, and one end of the elastic member 81 protrudes from the surface of the fixing member 8 and can elastically expand and contract on the surface of the fixing member 8. Correspondingly, two positioning grooves 522 are provided on the side wall of the sliding member 52 or the slide member 51. In this embodiment, two positioning grooves 522 are preferably provided on the side wall of the sliding member 52. The two positioning grooves 522 are arranged along the moving direction of the sliding member 52 and are spaced by a preset distance. During the back and forth translation of the sliding member 52, one end of the elastic member 81 can be embedded in the corresponding positioning groove 522 to realize the positioning of the slide member 51 and the sliding member 52 at two positions in their moving direction. When one end of the elastic component 81 is embedded in the positioning groove 522 close to the cavity 6, the sliding member 51 is in the mold closing position, at which time the molten material can be injected into the product cavity; when one end of the elastic component 81 is embedded in the positioning groove 522 away from the cavity 6, the sliding member 51 is in the demolding position, at which time the product 7 can be demolded.

[0038] Combination Figure 8 and Fig. 9The core 3 is provided with a first glue inlet channel 31 and a second glue inlet channel 32. The first glue inlet channel 31 extends from the middle of the end wall of the core 3 along the radial direction of the core 3, and the first glue inlet channel 31 does not directly pass through the peripheral wall of the core 3. The first end of the second glue inlet channel 32 is connected with the first glue inlet channel 31, and the second end of the second glue inlet channel 32 extends obliquely downward and passes through the outer peripheral wall of the core 3, and the second end of the second glue inlet channel 32 is connected with the chamber 6. The first glue inlet channel 31 is provided with a protrusion 311 on one end close to the second glue inlet channel 32. The protrusion 311 protrudes upward from the bottom wall of the first glue inlet channel 31 by a preset height, and the preset height is less than the diameter of the first glue inlet channel 31, so that the molten material can flow through the top of the protrusion 311.

[0039] After injection molding, the first sprue material 91 and the second sprue material 92 connected to each other will be formed in the first glue feed channel 31 and the second glue feed channel 32 respectively. The first sprue material 91 is formed with a groove 911 at one end close to the second sprue material 92, and the opening of the groove 911 corresponds to the direction of the second sprue material 92. During demolding, the first sprue material 91 drives the second sprue material 92 to move upward together. Due to the limitation of the second glue feed channel 32, the second sprue material 92 is subjected to the downward force applied by the second glue feed channel 32. Generally, when the second sprue material 92 escapes from the second glue feed channel 32, the second sprue material 92 has a tendency to bounce upward. In this embodiment, since the protrusion 311 is provided, the groove 911 is formed on the first sprue material 91. During the upward movement of the second sprue material 92, the first sprue material 91 will be partially deformed downward from the groove 911, so that the second sprue material 92 will not easily bounce upward, avoiding bouncing and damaging the product 7 adjacent to it.

[0040] Combination Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 The ejector assembly 4 includes an ejector 41 and an ejector pin 42. At least one ejector 41 is arranged in the mold core 3. In this embodiment, four ejectors are taken as an example. The four ejectors 41 are arranged along the circumference of the mold core 3, and the ejectors 41 extend obliquely downward and outward along the mold opening direction. When the ejector 41 moves upward relative to the mold core 3, the upper part of the ejector 41 moves toward the center of the mold core 3, so that the ejector 41 is separated from the inner wall of the product 7. A supporting portion 411 is provided at one end of the ejector 41. The supporting portion 411 protrudes from the outer peripheral wall of the mold core 3, and the supporting portion 411 extends to the end of the cavity 6 to form a partial bottom wall of the cavity 6, which can push the product 7 to move toward the upper mold direction when the mold is opened.

[0041] An ejector pin 42 is also provided in the middle of the mold core 3. The ejector pin 42 extends along the mold opening direction. The ejector pin 42 and the first glue inlet flow channel 31 are arranged correspondingly up and down, and can push the first sprue material 91 to move toward the upper mold direction when the mold is opened.

[0042] The lower parts of the ejector 41 and the ejector pin 42 are connected to the second ejector plate 70, and when the mold is opened, they are driven to move toward the upper mold direction by the second ejector plate 70. When the mold is opened, the ejector 41 can push the product 7 in the chamber 6 to move toward the upper mold direction to eject the product 7; at this time, the ejector pin 42 can push the first sprue material 91 in the first glue inlet channel 31 to move toward the upper mold direction to drive the second sprue material 92 to separate from the product 7.

[0043] In summary, the utility model is used to form diamond patterns on the surface of the product by arranging diamond patterns on the arc-shaped portion; and by arranging multiple planes between the close-fitting portions of two adjacent positioning members, and the multiple planes are arranged along the patterns of the diamond patterns. On the one hand, the two adjacent close-fitting portions can be closely matched, and on the other hand, the positioning lines of the product after molding extend along the patterns of the diamond patterns, thereby achieving the purpose of hiding the positioning lines and avoiding the positioning lines interrupting the patterns of the diamond patterns, which is beneficial to improving the continuity of the diamond patterns and the aesthetics of the product.

[0044] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A diamond pattern seamless injection mold, comprising an upper mold and a lower mold, characterized in that: The upper mold includes an upper mold core; The lower mold comprises a lower mold core, a mold core and at least two slide assemblies, the slide assembly comprises a slide member, a sliding member and a driving member, all of the sliding members are arranged between the upper mold core and the lower mold core, the mold core is arranged on the lower mold core and between all of the sliding members, and an annular chamber is enclosed between all of the sliding members and the mold core, the driving member is connected to the upper mold, the sliding member is connected to the sliding member, and the sliding member is slidably connected to the driving member, and when the mold is opened, the driving member can drive the sliding member and the sliding member to move along a direction perpendicular to the mold opening direction; The slider is provided with an arc portion at one end facing the chamber, and the arc portion is provided with diamond patterns. The slider is provided with a close-fitting portion on at least one side of the arc portion, and the close-fitting portions of two adjacent sliders are fitted together. A plurality of planes are provided on the close-fitting portion, and the planes extend along the fitting line of two adjacent sliders, and the plurality of planes are arranged along the patterns of the diamond patterns.

2. The diamond pattern seamless injection mold according to claim 1, characterized in that: The diamond pattern includes a plurality of polygonal patterns arranged in an array, and an edge line at one end of the plane constitutes a side of the polygonal pattern.

3. The diamond pattern seamless injection mold according to claim 1, characterized in that: The upper mold core is provided with an annular groove connected with the cavity, and the annular groove and the cavity form a product cavity.

4. The diamond pattern seamless injection mold according to claim 3, characterized in that: The slider is provided with two protrusions arranged in the axial direction of the arc portion, the diamond pattern is provided between the two protrusions, and one of the protrusions is provided between the annular groove and the chamber and extends into the chamber.

5. The diamond pattern seamless injection mold according to any one of claims 1 to 4, characterized in that: The sliding member is provided with an inclined slide groove on one end facing away from the sliding member, and the inclined slide groove extends outwardly along the mold opening direction; An inclined sliding block is provided on one side of the driving member, and the inclined sliding block is slidably connected with the inclined sliding groove.

6. The diamond pattern seamless injection mold according to any one of claims 1 to 4, characterized in that: The lower mold is provided with a fixing piece on at least one side of the slide assembly, and an elastic component is provided on the fixing piece, and one end of the elastic component elastically protrudes from the surface of the fixing piece; Two positioning grooves are arranged on the side wall of the sliding member or the sliding member. The two positioning grooves are arranged in an aligned manner along the moving direction of the sliding member and are spaced apart by a preset distance. One end of the elastic component can be embedded in any of the positioning grooves.

7. The diamond pattern seamless injection mold according to any one of claims 1 to 4, characterized in that: The mold core is provided with a first glue inlet channel and a second glue inlet channel, the first glue inlet channel extends from the middle of the mold core end wall along the radial direction of the mold core, the first end of the second glue inlet channel is connected with the first glue inlet channel, the second end of the second glue inlet channel extends obliquely and passes through the outer peripheral wall of the mold core, and the second end of the second glue inlet channel is connected with the chamber.

8. The diamond pattern seamless injection mold according to claim 7, characterized in that: The first glue inlet flow channel is provided with a protrusion on one end close to the second glue inlet flow channel.

9. The diamond pattern seamless injection mold according to claim 7, characterized in that: An ejector is arranged in the mold core, and the ejector extends obliquely along the mold opening direction. A supporting portion is arranged on one end of the ejector, and the supporting portion extends to the end of the cavity. When the mold is opened, the ejector can push the product in the cavity to move toward the upper mold direction.

10. The diamond pattern seamless injection mold according to claim 9, characterized in that: An ejector pin is also arranged in the mold core. The ejector pin is arranged corresponding to the first glue inlet flow channel. When the mold is opened, the ejector pin can push the sprue material in the first glue inlet flow channel to move toward the upper mold.

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