In-mold injection molding assembly

Abstract

The utility model discloses an in-mold injection molding assembly, which belongs to the field of in-mold injection molding and comprises an injection molding mechanism and a molding assembly, the injection molding mechanism comprises a bottom plate, a hot runner is erected at the upper end of the bottom plate, a material pushing roller is rotatably connected in the hot runner, one end of the material pushing roller is connected with a servo motor, and the upper end of the hot runner is fixedly connected with a blanking hopper; according to the utility model, the injection molding mechanism is matched with the molding assembly, so that not only can in-mold injection molding be carried out, and a hard mold sheet and a camera decorating part are integrated to achieve a waterproof effect, but also the cutting work of the hard mold sheet can be carried out; and in addition, through mutual cooperation of the structures, the demolding operation can be automatically carried out, and the use convenience of the injection molding assembly is improved.

Description

Technical Field

[0001] The utility model relates to the field of in-mold injection molding, in particular to an in-mold injection molding component. Background Art

[0002] In-mold insert molding is referred to as IML process. Its most notable feature is that the surface is a hardened transparent film, the middle is a printed pattern layer, and the back is a plastic layer. Because the ink is sandwiched in the middle, the product can prevent the surface from being scratched and resistant to friction, and can maintain bright colors for a long time and is not easy to fade. Among them, the "in-mold injection molding component" disclosed in the application number "CN201821591702.1" is also an increasingly mature technology. Its "in-mold injection molding component provided by the utility model takes the hardened film as an insert, which is placed in the mold for injection molding. The hardened film is tightly attached to the back of the light display piece and becomes a whole with the light display piece. Then the hardened film and the light display piece as a whole are used as inserts and put into the mold for secondary injection molding to form a light box assembly with the light box body. The injection molding process is adopted, no The traditional double-sided adhesive is used for fixing, so the light box assembly is integrated without any gaps, which can effectively prevent beverages and rain from infiltrating and causing damage to the circuit board. "However, the injection molding component still has the following defects during use: the injection molding component is formed as a whole with the mold by the hardened film set as the insert, which can indeed achieve the purpose of waterproof infiltration, but after the hardened film and the workpiece are integrated, the edge needs to be trimmed additionally, which will affect the injection molding efficiency. Based on this, it is necessary to provide an injection molding component that can perform edge trimming while injection molding to improve the injection molding efficiency. In addition, the injection molding component is inconvenient to demold, which affects the convenience of use of the injection molding component. Therefore, it is necessary to use an injection molding component that is easy to automatically demold and improve the convenience of use. Utility Model Content

[0003] The embodiment of the utility model provides an in-mold injection molding component, which aims to solve the problem that the existing injection molding component is not convenient for simultaneously performing the trimming and demoulding work of the hard mold piece, which affects the injection molding efficiency and the convenience of use.

[0004] To achieve the above-mentioned purpose, the utility model provides an in-film injection molding component, comprising an injection molding mechanism and a molding component;

[0005] The injection molding mechanism includes a bottom plate, a hot runner is mounted on the upper end of the bottom plate, a push roller is rotatably connected inside the hot runner, one end of the push roller is connected to a servo motor, a lower hopper is fixedly connected to the upper end of the hot runner, an injection molding needle is fixedly connected to one end of the hot runner, a vertical plate is fixedly connected to the upper end of the bottom plate, a first hydraulic cylinder is installed on the surface of the vertical plate, and an output end of the first hydraulic cylinder is fixedly connected to a first connection plate;

[0006] The molding assembly includes a molding plate installed on the upper end of the base plate, a molding groove is provided on the surface of the molding plate, a plurality of demoulding holes are provided inside the molding groove, a demoulding plate is slidably connected to the upper end of the base plate, a demoulding rod is fixedly connected to the surface of the demoulding plate, a closing plate is slidably connected to the upper end of the base plate, an injection hole is provided on the surface of the closing plate, a hard mold piece is connected to the surface of the closing plate, a fixed plate is connected to the surface of the molding plate, a trimming knife is fixedly connected to the surface of the fixed plate, the first connecting plate is threadedly connected to the demoulding plate, and a plurality of demoulding rods are inserted into the inside of the demoulding hole.

[0007] As a preferred solution of the utility model, two strip grooves are provided at the upper end of the bottom plate, and guide rods are fixedly connected inside the two strip grooves.

[0008] As a preferred solution of the utility model, the upper end of the bottom plate is fixedly connected with a receiving plate and an arc plate respectively, and the hot runner is mounted on the upper end of the arc plate.

[0009] As a preferred solution of the utility model, a plurality of limit rods are fixedly connected to the surface of the forming plate, a plurality of limit holes are opened on the surfaces of the stripping plate, the closing plate and the hard mold piece, and a plurality of the limit rods are inserted into the inside of the limit holes.

[0010] As a preferred solution of the utility model, the lower ends of the forming plate, the stripping plate and the closing plate are fixedly connected with two guide blocks, one end of the two guide blocks is provided with a guide hole, the guide blocks are slidably connected inside the strip groove, and the guide rods are inserted into the guide holes.

[0011] As a preferred solution of the utility model, a second hydraulic cylinder is installed on the upper end of the receiving plate, an output end of the second hydraulic cylinder is fixedly connected to a second connecting disk, and the second connecting disk is threadedly connected to the closing mold plate.

[0012] As a preferred solution of the present invention, the hard mold piece is made of PET.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When performing in-mold injection molding, first install the hard mold piece on the surface of the closing mold plate, then insert the limit rod into the limit hole to limit and fix the hard mold piece, then start the second hydraulic cylinder to extend, and cooperate with the second connecting plate to control the closing mold plate and the molding plate to contact, then inject the plastic particles into the hot runner through the lower hopper, start the servo motor to rotate the push roller, and as the push roller rotates, the plastic particles can be moved along the push roller groove. In this process, the hot runner melts the plastic particles into a liquid state and pushes them into the injection needle by the push roller. At the same time, the injection needle transports the liquid into the molding groove through the injection hole to form a camera decoration workpiece. At the same time, the hard mold piece and the workpiece contact and form a whole, thereby completing the in-mold injection molding operation. At the same time, when the molding plate and the closing mold plate are in contact, the trimming knife on the surface of the fixed plate can cut the edge of the hard mold piece. Compared with the molding mechanism in the prior art "an in-mold injection molding component", the utility model can perform trimming operations at the same time after in-mold injection molding, so as to improve the injection molding efficiency;

[0015] 2. Before the demoulding operation, several demoulding plates are inserted into the demoulding holes and fit completely. At this time, there is a gap between the molding plate and the demoulding plate. Then the first hydraulic cylinder is started to extend, and the first connecting plate is cooperated to control the guide block to move along the strip groove. When the demoulding plate and the molding plate are fitted, several demoulding rods protrude from the demoulding holes, so that the molded camera interior workpiece can be ejected to complete the demoulding operation. Compared with the molding mechanism in the prior art "an in-membrane injection molding component", the utility model can automatically perform the demoulding work through the cooperation of the above-mentioned structures, thereby improving the convenience of using the injection molding component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a disassembled diagram of the injection molding mechanism and molding component structure of the utility model;

[0018] Figure 3 This is a disassembled diagram of the injection molding mechanism structure of the utility model;

[0019] Figure 4 This is a disassembly diagram of the molding component structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the cutting mechanism structure of the utility model.

[0021] In the figure: 100, injection molding mechanism; 101, bottom plate; 102, hot runner; 103, push roller; 104, servo motor; 105, lower hopper; 106, injection molding needle; 107, vertical plate; 108, first hydraulic cylinder; 109, first connecting plate; 111, strip groove; 112, guide rod; 121, receiving plate; 122, arc plate; 200, molding assembly; 201, molding plate; 202, molding groove; 203, demoulding hole; 204, demoulding plate; 205, demoulding rod; 206, closing plate; 207, injection molding hole; 208, hard mold piece; 209, fixing plate; 210, trimming knife; 211, limit rod; 212, limit hole; 221, guide block; 222, guide hole; 231, second hydraulic cylinder; 232, second connecting plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides an in-film injection molding component, including an injection molding mechanism 100 and a molding component 200;

[0024] The injection molding mechanism 100 includes a bottom plate 101, a hot runner 102 is mounted on the upper end of the bottom plate 101, a push roller 103 is rotatably connected inside the hot runner 102, one end of the push roller 103 is connected to a servo motor 104, a lower hopper 105 is fixedly connected to the upper end of the hot runner 102, an injection molding needle 106 is fixedly connected to one end of the hot runner 102, a vertical plate 107 is fixedly connected to the upper end of the bottom plate 101, a first hydraulic cylinder 108 is installed on the surface of the vertical plate 107, and a first connecting plate 109 is fixedly connected to the output end of the first hydraulic cylinder 108;

[0025] The molding assembly 200 includes a molding plate 201, which is installed on the upper end of the base plate 101. A plurality of demolding holes 203 are provided inside the molding groove 202. A demolding plate 204 is slidably connected to the upper end of the base plate 101. A demolding rod 205 is fixedly connected to the surface of the demolding plate 204. A closing plate 206 is slidably connected to the upper end of the base plate 101. An injection hole 207 is provided on the surface of the closing plate 206. A hard mold piece 208 is connected to the surface of the closing plate 206. A fixed plate 209 is connected to the surface of the molding plate 201. A trimming knife 210 is fixedly connected to the surface of the fixed plate 209. The first connecting plate 109 is threadedly connected to the demolding plate 204. A plurality of demolding rods 205 are inserted into the inside of the demolding hole 203.

[0026] In a specific embodiment, the provided injection molding mechanism 100 cooperates with the molding assembly 200 to not only perform in-mold injection molding so that the hard mold piece 208 and the camera decorative piece are integrated into one to achieve a waterproof effect, but also can perform cutting of the hard mold piece 208, thereby improving the injection molding efficiency. In addition, the above-mentioned structures cooperate with each other to automatically perform demoulding operations, thereby improving the convenience of using the injection molding assembly. When performing the injection molding operation, firstly, the hard mold piece 208 is installed on the surface of the closing plate 206, and then the limiting rod 211 is inserted into the limiting hole 212 to limit and fix the hard mold piece 208, and then the second hydraulic cylinder 231 is started to extend, and the second connecting plate 232 is cooperated to control the closing plate 206 and the molding plate 201 to contact, and then the plastic particles are injected into the hot runner 102 through the lower hopper 105, and the servo motor 104 is started to rotate with the push roller 103. As the push roller 103 rotates, the plastic particles can be pushed along the side surface of the push roller 103. During this process, the hot runner 102 melts the plastic particles into liquid and is pushed into the injection needle 106 by the push roller 103. At the same time, the injection needle 106 delivers the liquid into the molding groove 202 through the injection hole 207 to form a camera decoration workpiece. At the same time, the hard mold piece 208 contacts and forms a whole with the workpiece, so that the in-mold injection molding operation can be completed. When the molding plate 201 contacts the closing plate 206, the trimming knife 210 on the surface of the fixing plate 209 can trim the hard mold piece 208. The edge of the quality mold piece 208 is cut, so as to improve the injection molding efficiency. After the injection molding is completed, the first hydraulic cylinder 108 is started to extend, and the first connecting plate 109 is cooperated to control the guide block 221 to move along the strip groove 111. When the demolding plate 204 and the molding plate 201 are in contact with each other, a plurality of demolding rods 205 are extended from the demolding hole 203, so as to eject the molded camera interior workpiece from the molding groove 202 to complete the demolding operation, thereby improving the convenience of using the injection molding component.

[0027] See also Figure 2 and Figure 3Two strip grooves 111 are formed at the upper end of the bottom plate 101 , and guide rods 112 are fixedly connected inside the two strip grooves 111 .

[0028] In a specific embodiment, the strip groove 111 cooperates with the guide rod 112 to limit and guide the stripping plate 204 and the closing plate 206, so as to avoid injection failure and cost loss due to deviation during closing of the mold.

[0029] See also Figure 2 and Figure 3 The upper end of the bottom plate 101 is fixedly connected with a receiving plate 121 and an arc plate 122 , respectively, and the hot runner 102 is mounted on the upper end of the arc plate 122 .

[0030] In a specific embodiment, the arc plate 122 can limit the installation of the hot runner 102 to improve the injection molding stability.

[0031] See also Figure 2 , Figure 4 and Figure 5 A plurality of limiting rods 211 are fixedly connected to the surface of the forming plate 201 , and a plurality of limiting holes 212 are opened on the surfaces of the stripping plate 204 , the closing plate 206 and the hard mold piece 208 , and the plurality of limiting rods 211 are inserted into the limiting holes 212 .

[0032] In a specific embodiment, the limiting rod 211 inserted into the limiting hole 212 can further play a guiding role, and can also limit and fix the hard mold 208, so that the hard mold 208 and the camera decoration workpiece fit closely, thereby improving the injection molding quality.

[0033] See also Figure 2 , Figure 4 and Figure 5 The lower ends of the forming plate 201, the stripping plate 204 and the closing plate 206 are fixedly connected with two guide blocks 221, one end of each of the two guide blocks 221 is provided with a guide hole 222, the guide block 221 is slidably connected to the inside of the strip groove 111, and the guide rod 112 is inserted into the inside of the guide hole 222.

[0034] In a specific embodiment, when the closing plate 206 and the stripping plate 204 move, the guide block 221 can move along the strip groove 111, and the guide rod 112 plays a guiding and limiting role, further improving the injection molding quality.

[0035] See also Figure 2 , Figure 4 and Figure 5 A second hydraulic cylinder 231 is installed on the upper end of the receiving plate 121 , and a second connecting plate 232 is fixedly connected to the output end of the second hydraulic cylinder 231 . The second connecting plate 232 and the closing plate 206 are threadedly connected.

[0036] In a specific embodiment, the second hydraulic cylinder 231 controls the second connecting plate 232 to extend so as to push the closing plate 206 forward, so as to facilitate the hot runner 102 to perform injection molding operation.

[0037] See also Figure 4 The hard mold piece 208 is made of PET.

[0038] In a specific embodiment, PET is a polyethylene terephthalate plastic, commonly known as polyester resin, which has the characteristics of oil resistance, fat resistance, and dilute acid resistance, and has good bending resistance, so it can improve the injection molding quality of the workpiece.

[0039] Working principle: During the injection molding operation, the hard mold piece 208 is first mounted on the surface of the closing plate 206, and then the limiting rod 211 is inserted into the limiting hole 212 to limit and fix the hard mold piece 208, and then the second hydraulic cylinder 231 is started to extend, and the second connecting plate 232 is cooperated to control the closing plate 206 and the molding plate 201 to contact, and then the plastic particles are injected into the hot runner 102 through the lower hopper 105, and the servo motor 104 is started to rotate the push roller 103. As the push roller 103 rotates, the plastic particles can be moved along the grooves on the side surface of the push roller 103. At this time, the hot runner 102 melts the plastic particles into a liquid state and is pushed into the injection needle 106 by the push roller 103. At the same time, the injection needle 106 The liquid is transported to the molding groove 202 through the injection hole 207 to form a camera decoration workpiece. The hard mold piece 208 contacts the workpiece and forms a whole, thereby completing the in-mold injection molding operation. When the molding plate 201 and the closing plate 206 contact, the trimming knife 210 on the surface of the fixed plate 209 can cut the edge of the hard mold piece 208, thereby improving the injection molding efficiency. After the injection molding is completed, the first hydraulic cylinder 108 is started to extend, and the first connecting plate 109 is cooperated to control the guide block 221 to move along the strip groove 111. When the stripping plate 204 and the molding plate 201 are in contact, a number of demolding rods 205 protrude from the demolding hole 203, so that the molded camera interior workpiece can be ejected from the molding groove 202 to complete the demolding operation.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-mold injection molding component, characterized in that: include: An injection molding mechanism (100), the injection molding mechanism (100) comprising a base plate (101), a hot runner (102) being mounted on the upper end of the base plate (101), a push roller (103) being rotatably connected inside the hot runner (102), one end of the push roller (103) being connected to a servo motor (104), a lower hopper (105) being fixedly connected to the upper end of the hot runner (102), an injection molding needle (106) being fixedly connected to one end of the hot runner (102), a vertical plate (107) being fixedly connected to the upper end of the base plate (101), a first hydraulic cylinder (108) being mounted on the surface of the vertical plate (107), and a first connecting plate (109) being fixedly connected to the output end of the first hydraulic cylinder (108); A molding assembly (200), the molding assembly (200) comprising a molding plate (201) mounted on the upper end of a bottom plate (101), a molding groove (202) being provided on the surface of the molding plate (201), a plurality of demoulding holes (203) being provided inside the molding groove (202), a demoulding plate (204) being slidably connected to the upper end of the bottom plate (101), a demoulding rod (205) being fixedly connected to the surface of the demoulding plate (204), and a molding groove (202) being provided on the surface of the bottom plate (101). A clamping plate (206) is provided, an injection hole (207) is opened on the surface of the clamping plate (206), a hard mold sheet (208) is connected to the surface of the clamping plate (206), a fixing plate (209) is connected to the surface of the molding plate (201), a trimming knife (210) is fixedly connected to the surface of the fixing plate (209), the first connecting plate (109) and the stripping plate (204) are threadedly connected, and a plurality of stripping rods (205) are inserted into the interior of the stripping hole (203).

2. The in-mold injection molding component according to claim 1, characterized in that: Two strip-shaped grooves (111) are provided at the upper end of the bottom plate (101), and guide rods (112) are fixedly connected inside the two strip-shaped grooves (111).

3. The in-mold injection molding component according to claim 1, characterized in that: The upper end of the bottom plate (101) is fixedly connected to a receiving plate (121) and an arc-shaped plate (122), respectively, and the hot runner (102) is mounted on the upper end of the arc-shaped plate (122).

4. The in-mold injection molding component according to claim 1, characterized in that: A plurality of limiting rods (211) are fixedly connected to the surface of the forming plate (201), a plurality of limiting holes (212) are opened on the surfaces of the stripping plate (204), the closing plate (206) and the hard mold sheet (208), and the plurality of limiting rods (211) are inserted into the limiting holes (212).

5. The in-mold injection molding component according to claim 2, characterized in that: The lower ends of the forming plate (201), the stripping plate (204) and the closing plate (206) are fixedly connected to two guide blocks (221), one end of each of the two guide blocks (221) is provided with a guide hole (222), the guide blocks (221) are slidably connected inside the strip groove (111), and the guide rods (112) are inserted inside the guide holes (222).

6. The in-mold injection molding component according to claim 3, characterized in that: A second hydraulic cylinder (231) is installed at the upper end of the receiving plate (121); an output end of the second hydraulic cylinder (231) is fixedly connected to a second connecting plate (232); and the second connecting plate (232) is threadedly connected to the joint plate (206).

7. The in-mold injection molding component according to claim 1, characterized in that: The hard mold piece (208) is made of PET.

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