Injection mold
The injection molding die reduces size and cost by using a sliding mechanism to move core components with the upper mold, eliminating external power sources and simplifying the mechanism.
Patent Information
- Application Number
- CN202421940755.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-09
AI Technical Summary
When processing internal grooves of existing injection molds, power components such as cylinders and telescopic motors are required, resulting in large mold accumulation and high production costs.
The upper mold drive inlet is used to move to the injection molding space. When opening the mold, the upper mold drive inlet is separated from the mold-formed product, which reduces the mold specific accumulation and reduces the production cost. The upper mold moves and separation of the inlets are achieved through the upper mold lever and oblique hole structure.
The movement and separation of the inlets can be achieved without additional power sources, effectively reducing the specific volume of the module and reducing production costs.
Smart Images
Figure CN223099816U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of injection molding processing, and particularly relates to an injection mold. Background Art
[0002] Nowadays, the application scope of injection molds is becoming wider and wider. Injection molds can form different types of products, such as earphones, card holders, camera brackets, etc. When processing some products, it is necessary to process grooves inside the products to meet the design requirements. Currently, the commonly used method is to set an inverted hook-shaped movable insert between the male mold and the female mold of the injection mold, and drive the movable insert to move through a cylinder. When the male mold and the female mold are closed, the cylinder drives the movable insert to insert into the molding cavity. Before mold opening, the cylinder drives the movable insert to separate from the molded product first, and then the mold is opened. This method requires setting power components, such as cylinders, telescopic motors, etc., which results in a large mold volume, inconvenient movement, and an increase in the manufacturing cost of the mold. Summary of the Utility Model
[0003] In view of the above, it is necessary to provide an injection mold that can drive the insert to move to the injection space when the mold is closed and drive the insert to separate from the molded product when the mold is opened, so as to reduce the size of the injection mold and lower the manufacturing cost of the injection mold.
[0004] An embodiment of the present application provides an injection mold, including: a lower mold, including a lower template and inserts disposed on the lower template, the lower template is provided with a first molding cavity and a chute that communicate with each other, the insert is slidably disposed in the chute, the insert includes a sliding seat slidably connected to the chute, a first slider connected to the sliding seat, a second slider slidably disposed on the sliding seat, and barbs respectively connected to the first slider and the second slider, the sliding seat includes a bearing end and a driving end connected to each other, the driving end protrudes upward from an end of the bearing end away from the first molding cavity and protrudes above the bearing end, the driving end is provided with an inclined hole extending from top to bottom along an upper end of the driving end, the inclined hole includes a first end and a second end disposed opposite to each other, the first end is located at the driving end and abuts against a surface of the bottom of the chute, the second end is located on a surface of the driving end away from the bottom of the chute, and a distance between the first end and the bearing end is greater than a distance between the second end and the bearing end, the first slider is connected to the bearing end, the first slider is provided with a moving hole along a moving direction of the first slider, one end of the moving hole faces the driving end, and the other end faces the first molding cavity, an end of the moving hole facing the driving end is higher than an end of the moving hole facing the first molding cavity, the second slider is slidably disposed above the bearing end, the barb includes a connecting portion and a molding portion connected to each other, the connecting portion is slidably disposed in the moving hole and is movably connected to the second slider, the molding portion abuts against the first slider, and an upper end of the molding portion protrudes above the first slider; an upper mold, covering the lower mold, including an upper template and a push rod connected to a side of the upper template facing the lower template, the upper template is provided with a second molding cavity and an injection hole that communicate with each other, the second molding cavity is disposed on a side of the upper template facing the lower template; wherein, when the upper mold and the lower mold are clamped, the push rod is inserted into the inclined hole and pushes the sliding seat to move towards the first molding cavity, so that the first slider and the barb move into the first molding cavity, and further the first molding cavity and the second molding cavity are enclosed to form an injection space.
[0005] In the above-mentioned injection mold, when the mold is closed, the lever of the upper mold is inserted into the inclined hole of the mold, and then during the mold closing process, the lever pushes the sliding seat of the mold to move along the slide groove toward the first molding cavity, and the sliding seat drives the first slider and the barb to move toward the first molding cavity. After the mold closing is completed, the lever is inserted into the inclined hole to limit the position of the sliding seat, and then limit the position of the first slider and the barb, so that the first slider and the barb are located at the preset position of the first molding cavity, and the second molding cavity and the first molding cavity are combined to form an injection molding space. When the mold is opened, the upper mold is away from the lower mold, and then the lever drives the sliding seat away from the first molding cavity, and the sliding seat drives the first slider away from the first molding cavity. The molding part of the barb is clamped in the injection molded product, and the first slider pushes the connecting part of the barb downward through the hole wall of the movable hole until the molding part is separated from the product, and then the first slider abuts against the second slider, and then pushes the second slider away from the first molding cavity, and the second slider drives the barb away from the first molding cavity. When the lever moves out of the inclined hole, the first slider and the barb are separated from the product, and the mold opening is completed. The above-mentioned injection mold drives the injector to move to the injection space through the upper mold when the mold is closed, and drives the injector to separate from the molded product through the upper mold when the mold is opened. No additional power source is required, which effectively reduces the volume of the injection mold and reduces the production cost of the injection mold.
[0006] In some embodiments, the sliding seat is provided with two sliding protrusions, both of which extend along the movement direction of the sliding seat, and the two sliding protrusions are spaced apart on both sides of the groove wall of the sliding seat facing the sliding groove; the groove bottom of the sliding groove is provided with two supporting protrusions, both of which extend along the movement direction of the sliding seat and are respectively corresponding to the two sliding protrusions; the insert also includes two limiting components, each of which includes a first limiting piece, and the two first limiting pieces are respectively connected to the two supporting protrusions and abut against the corresponding upper sides of the sliding protrusions, and the first limiting piece cooperates with the groove bottom of the sliding groove to limit the movement trajectory of the sliding seat.
[0007] In some embodiments, each of the limiting components includes a second limiting member, and the two second limiting members are respectively arranged corresponding to the two first limiting members, and are both connected to the side of the corresponding first limiting member facing away from the bottom of the groove of the slide groove, and each of the second limiting members has a limiting groove on the side facing the sliding seat; limiting protrusions are provided at both ends of the second sliding block opposite to the two second limiting members, and each of the limiting protrusions is slidably arranged in the limiting groove of the corresponding second limiting member.
[0008] In some embodiments, the insert further includes a connecting piece, which is connected to one end of the connecting portion facing the second slider; the second slider is provided with a slot, and one end of the connecting piece away from the connecting portion is movably disposed in the slot.
[0009] In some embodiments, the insert further includes two first elastic members which are respectively disposed in the two limiting grooves. Each first elastic member abuts against a side of the corresponding limiting protrusion away from the first slider, and the first elastic member pushes the second slider towards the first slider.
[0010] In some embodiments, the insert further includes a second elastic member which is sleeved on the connecting member, and two ends of the second elastic member respectively abut against the connecting portion and the second slider. The second elastic member is configured to push the connecting portion away from the second slider.
[0011] In some embodiments, the lower template is further provided with a stop block which is disposed between the first forming cavity and the chute. The stop block stops the sliding seat to limit the distance that the sliding seat moves towards the first forming cavity.
[0012] In some embodiments, the insert further includes a third elastic member, and two ends of the third elastic member respectively abut against the stop block and the sliding seat. The third elastic member is configured to push the sliding seat away from the first forming cavity.
[0013] In some embodiments, the barb further includes a reinforcing portion which is disposed between the connecting portion and the forming portion. A receiving groove adapted to the reinforcing portion and the forming portion is defined at one end of the movable hole facing the first forming cavity.
[0014] In some embodiments, the lower template is further provided with a through hole which vertically extends downward from the bottom of the chute. The through hole receives one end of the shifting rod extending out of the inclined hole during mold closing. Description of the Drawings
[0015] Figure 1 It is a schematic structural view of an injection mold provided by an embodiment of the present application.
[0016] Figure 2 It is Figure 1 a schematic structural view of the lower mold of the injection mold shown.
[0017] Figure 3 It is Figure 2 a schematic exploded structural view of the lower mold of the injection mold shown.
[0018] Figure 4 It is Figure 2 a schematic exploded structural view of the insert of the lower mold of the injection mold shown.
[0019] Figure 5 It is Figure 1 a schematic structural view of the upper mold of the injection mold shown.
[0020] Figure 6 The Figure 1 sectional view of the injection mold shown along the VI-VI direction.
[0021] Figure 7 The Figure 6 schematic diagram of the state when the upper mold and the lower mold of the injection mold shown start to separate.
[0022] Figure 8 The Figure 7 schematic diagram of the state when the first slider of the injection mold shown abuts against the second slider.
[0023] Figure 9 The Figure 8 schematic diagram of the state after the upper mold and the lower mold of the injection mold shown are separated.
[0024] Description of main component symbols: injection mold 100, lower mold 10, lower template 11, first molding cavity 111, chute 112, bottom of the chute 1121, chute wall 1122, support protrusion 1123, stop block 113, through hole 114, insert 12, sliding seat 121, sliding protrusion 1211, bearing end 1212, driving end 1213, inclined hole 1214, first end 1214a, second end 1214b, first slider 122, moving hole 1221, receiving groove 1222, second slider 123, limiting protrusion 1231, clamping groove 1232, barb 124, connecting portion 1241, molding portion 1242, strengthening portion 1243, connecting member 125, limiting assembly 126, first limiting member 1261, second limiting member 1262, limiting groove 1262a, first elastic member 127, second elastic member 128, third elastic member 129, upper mold 20, upper template 21, second molding cavity 211, injection hole 212, lever 22, injection space 30, product 200. Detailed implementation manners
[0025] The following details the implementation manners of the present application. The examples of the implementation manners are shown in the drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The implementation manners described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.
[0026] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, in the description of the present application, it should be noted that the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0027] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0028] The embodiments of the present application will be further described below with reference to the accompanying drawings.
[0029] Please refer to Figure 1 and Figure 2 , an injection mold 100 is provided in an embodiment of the present application for injection molding products 200. The products 200 can be plastic products such as the middle frame of a mobile phone and the housing of a camera. The injection mold 100 includes a lower mold 10 and an upper mold 20 covering the lower mold 10.
[0030] Please refer to Figure 2 , the lower mold 10 includes a lower template 11 and inserts 12 provided on the lower template 11.
[0031] Please refer to Figure 2 and Figure 3 , the lower template 11 is provided with a first molding cavity 111 and a chute 112 that communicate with each other, and a through hole 114 extending vertically downward from the bottom 1121 of the chute 112. Two support protrusions 1123 are provided on the bottom 1121 of the chute 112. The lower template 11 is further provided with a stop block 113, and the stop block 113 is provided between the first molding cavity 111 and the chute 112. The lower template 11 is a plate-like structure, and the first molding cavity 111 is a cavity adapted to the structure of the product 200 for accommodating the injected plastic to form the product 200. The chute 112 is generally a through groove in the shape of a cuboid for the inserts 12 to move. In this embodiment, the chute 112 includes a bottom 1121 and two groove walls 1122 that are vertically connected to the bottom 1121 and are oppositely arranged.
[0032] Please refer to Figure 2 , Figure 3 and Figure 4 , the inserts 12 are slidably arranged in the chute 112. The inserts 12 include a sliding seat 121 slidably connected to the chute 112, a first slider 122 connected to the sliding seat 121, a second slider 123 slidably arranged on the sliding seat 121, and barbs 124 respectively connected to the first slider 122 and the second slider 123.
[0033] The sliding seat 121 is provided with two sliding protrusions 1211. Both of the two sliding protrusions 1211 extend along the moving direction of the sliding seat 121, and the two sliding protrusions 1211 are spaced apart and arranged on both sides of the groove wall 1122 of the sliding seat 121 facing the sliding groove 112. Both of the two supporting protrusions 1123 extend along the moving direction of the sliding seat 121 and are correspondingly arranged with the two sliding protrusions 1211 respectively. In this embodiment, the sliding protrusion 1211 is a strip-shaped structure, and its extending direction is the same as the extending direction of the sliding groove 112, that is, the extending direction of the sliding protrusion 1211 is the same as the moving direction of the sliding seat 121.
[0034] In this embodiment, please refer to Figure 2 and Figure 3 , the stopper 113 stops the sliding seat 121 to limit the distance that the sliding seat 121 moves towards the first forming cavity 111.
[0035] The sliding seat 121 includes a bearing end 1212 and a driving end 1213 which are connected to each other. The driving end 1213 vertically extends upwards from one end of the bearing end 1212 away from the first forming cavity 111. An inclined hole 1214 extending from top to bottom along the upper end of the driving end 1213 is formed on the driving end 1213. Please refer to Figure 9 together. The inclined hole 1214 includes an opposite first end 1214a and a second end 1214b. The first end 1214a is located on the side of the driving end 1213 abutting against the bottom 1121 of the sliding groove 112, and the second end 1214b is located on the side of the driving end 1213 away from the bottom 1121 of the sliding groove 112. And the distance between the first end 1214a and the bearing end 1212 is greater than the distance between the second end 1214b and the bearing end 1212. The sliding seat 121 is a block-shaped structure and can move along the sliding groove 112 close to or away from the first forming cavity 111. In this embodiment, the cross section of the inclined hole 1214 is a rectangular structure.
[0036] Please refer to Figure 2 , Figure 4 and Figure 6, the first slider 122 is connected to the bearing end 1212. The first slider 122 is provided with a movable hole 1221 along the sliding direction of the first slider 122. One end of the movable hole 1221 faces the driving end 1213, and the other end faces the first forming cavity 111. The end of the movable hole 1221 facing the driving end 1213 is higher than the end of the movable hole 1221 facing the first forming cavity 111. A receiving groove 1222 is provided at the end of the movable hole 1221 facing the first forming cavity 111. The first slider 122 and the bearing end 1212 of the sliding seat 121 can be fixedly connected by bolts or the like to facilitate the installation and disassembly of the first slider 122. A clamping structure can also be provided between the first slider 122 and the sliding seat 121 to improve the stability of the sliding seat 121 driving the first slider 122 to move. It can be understood that the extending direction of the movable hole 1221 is inclined with respect to the plane of the lower template 11, that is, the movable hole 1221 is also an inclined hole. In this embodiment, the cross-section of the movable hole 1221 is rectangular.
[0037] The second slider 123 is slidably disposed on the upper side of the bearing end 1212. The two ends of the second slider 123 along the direction perpendicular to the sliding direction of the sliding seat 121 are respectively provided with limiting protrusions 1231. The second slider 123 is also provided with a clamping groove 1232. In this embodiment, the second slider 123 is a strip-shaped structure, and both limiting protrusions 1231 are block-shaped structures, protruding from the body of the second slider 123 along the extending direction of the second slider 123. The clamping groove 1232 is provided at a position of the second slider 123 opposite to the movable hole 1221 of the first slider 122. The clamping groove 1232 is a U-shaped groove and has a stepped structure.
[0038] Please refer to Figure 2 , Figure 4 and Figure 7 , the barb 124 includes a connecting portion 1241 and a forming portion 1242 connected to each other. The connecting portion 1241 is slidably disposed in the movable hole 1221 and is movably connected to the second slider 123. The forming portion 1242 abuts against the first slider 122, and the upper end of the forming portion 1242 protrudes from the first slider 122. The barb 124 further includes a strengthening portion 1243. The strengthening portion 1243 is disposed between the connecting portion 1241 and the forming portion 1242. The receiving groove 1222 is adapted to the strengthening portion 1243 and the forming portion 1242. In this embodiment, the barb 124 is an L-shaped structure, and an acute angle is formed between the extending direction of the connecting portion 1241 and the extending direction of the forming portion 1242. The forming portion 1242 extends in the vertical direction. The strengthening portion 1243 can be a block-shaped structure to improve the structural strength of the connection between the connecting portion 1241 and the forming portion 1242. When the strengthening portion 1243 and the forming portion 1242 abut against the receiving groove 1222, the extending direction of the connecting portion 1241 is consistent with the extending direction of the movable hole 1221.
[0039] Please refer toFigure 4 and Figure 5 The insert 12 further includes a connecting member 125. The connecting member 125 is connected to one end of the connecting portion 1241 facing the second slider 123, and the end of the connecting member 125 away from the connecting portion 1241 is movably disposed in the card slot 1232. In this embodiment, the connecting member 125 is a bolt with a nut. The nut of the connecting member 125 is movably clamped in the card slot 1232. When the first slider 122 and the barb 124 move relative to each other, the end of the connecting member 125 disposed in the card slot 1232 can move, so that the connecting member 125 and the barb 124 can rotate around the position where the connecting member 125 and the card slot 1232 are connected.
[0040] Please refer to Figure 2 、 Figure 3 and Figure 4 The insert 12 further includes two limiting components 126. Each limiting component 126 includes a first limiting member 1261. The two first limiting members 1261 are respectively connected to the two supporting protrusions 1123 and are both abutted against the upper side of the corresponding sliding protrusion 1211. The first limiting member 1261 cooperates with the bottom 1121 of the chute 112 to limit the movement track of the sliding seat 121. The first limiting member 1261 is a strip-shaped structure. By providing the first limiting member 1261, the movement track of the sliding seat 121 can be limited, and the movement stability of the sliding seat 121 can be improved.
[0041] Please refer to Figure 2 、 Figure 3 and Figure 4 Each limiting component 126 further includes a second limiting member 1262. The two second limiting members 1262 are respectively arranged corresponding to the two first limiting members 1261, and are both connected to the side of the corresponding first limiting member 1261 facing away from the bottom 1121 of the chute 112. A limiting groove 1262a is formed on the side of each second limiting member 1262 facing the sliding seat 121. The two limiting protrusions 1231 at both ends of the second slider 123 are respectively arranged opposite to the two second limiting members 1262, and each limiting protrusion 1231 is slidably disposed in the limiting groove 1262a of the corresponding second limiting member 1262. The second limiting member 1262 is a strip-shaped structure, and the limiting groove 1262a is a strip-shaped groove. By providing the second limiting member 1262, the moving distance of the second slider 123 can be limited.
[0042] Please refer to Figure 2 、 Figure 3 and Figure 4The insert 12 further includes two first elastic members 127, which are respectively arranged in two limiting grooves 1262a. Each first elastic member 127 abuts against the side of the corresponding limiting protrusion 1231 away from the first slider 122, and the first elastic member 127 pushes the second slider 123 to move toward the first slider 122. The first elastic member 127 is a spring. By providing the first elastic member 127, the second slider 123 can be abutted. When the sliding seat 121 drives the first slider 122 to move away from the first molding cavity 111 and the first slider 122 does not abut against the second slider 123, the first elastic member 127 pushes the second slider 123 to keep the second slider 123 at one end of the limiting groove 1262a close to the first molding cavity 111. When the first slider 122 abuts against the second slider 123, the first slider 122 pushes the second slider 123 to move away from the first molding cavity 111. At this time, the first elastic member 127 can be compressed and does not affect the movement of the second slider 123. When the sliding seat 121 drives the first slider 122 to move toward the first molding cavity 111 , the first elastic member 127 can push the second slider 123 to move toward the first molding cavity 111 until the second slider 123 abuts against one end of the limiting groove 1262a close to the first molding cavity 111 .
[0043] The insert 12 further includes a second elastic member 128, which is sleeved on the connecting member 125, and the two ends of the second elastic member 128 are respectively in contact with the connecting portion 1241 and the second slider 123, and the second elastic member 128 is used to push the connecting portion 1241 away from the second slider 123. The second elastic member 128 is a spring, and by providing the second elastic member 128, the connecting portion 1241 can be pushed away from the second slider 123. The connecting portion 1241 is also engaged with the second slider 123 through the connecting member 125. Under the action of the second elastic member 128, the relative distance between the connecting portion 1241 and the second slider 123 can be kept stable, and when the connecting portion 1241 is subjected to a force applied by the first slider 122 toward the second slider 123, the second elastic member 128 can play a buffering role.
[0044] The insert 12 further includes a third elastic member 129, the two ends of which are respectively in contact with the stopper 113 and the sliding seat 121, and the third elastic member 129 is used to push the sliding seat 121 away from the first molding cavity 111. The third elastic member 129 is a spring, and in this embodiment, two third elastic members 129 are provided. When the sliding seat 121 is away from the first molding cavity 111, the third elastic member 129 can push the sliding seat 121 to keep the position of the sliding seat 121 stable, which is convenient for mold closing.
[0045] See also Figure 1 , Figure 2 and Figure 5, the upper mold 20 covers the lower mold 10. The upper mold 20 includes an upper template 21 and a lever 22 connected to one side of the upper template 21 facing the lower template 11. The upper template 21 is provided with a second molding cavity 211 and an injection hole 212 that communicate with each other. The second molding cavity 211 is disposed on the side of the upper template 21 facing the lower template 11. The upper template 21 is a plate-like structure, and the lever 22 is a strip-like structure. It can be understood that the structure of the lever 22 is adapted to the structure of the inclined hole 1214 so that the lever 22 can be inserted into the inclined hole 1214 during mold closing. In this embodiment, the included angle between the extending direction of the lever 22 and the plane where the upper template 21 is located is an acute angle.
[0046] Among them, when the lower mold 10 and the upper mold 20 are closed, the lever 22 is inserted into the inclined hole 1214 and then pushes the sliding seat 121 to move towards the first molding cavity 111, so that the first slider 122 and the barb 124 move into the first molding cavity 111, and then the first molding cavity 111 and the second molding cavity 211 enclose an injection space 30. The through hole 114 accommodates one end of the lever 22 extending out of the inclined hole 1214 during mold closing.
[0047] It can be understood that the number of inserts 12 can be multiple, such as two, three, four, etc. The specific number and the position on the lower template 11 can be set according to actual needs and are not limited herein. The number of levers 22 connected to the upper template 21 can also be multiple, such as two, three, four, etc. The specific number and position correspond to the number and position of the inserts 12. In this embodiment, two inserts 12 are provided, and the two inserts 12 are symmetrically arranged. Two levers 22 are provided, and the two levers 22 are symmetrically arranged and respectively correspond to the two inserts 12.
[0048] In the injection mold 100 provided by the embodiment of the present application, when the lower mold 10 and the upper mold 20 are closed, the ejector rod 22 of the upper mold 20 is inserted into the inclined hole 1214 of the insert 12. Then, during the mold closing process, the ejector rod 22 pushes against the sliding seat 121 of the insert 12 to move along the sliding groove 112 towards the first molding cavity 111. The sliding seat 121 drives the first slider 122 and the barb 124 to move towards the first molding cavity 111. After the mold closing is completed, the ejector rod 22 is inserted into the inclined hole 1214 to limit the position of the sliding seat 121, and further limit the positions of the first slider 122 and the barb 124, so that the first slider 122 and the barb 124 are located at the preset positions in the first molding cavity 111. The second molding cavity 211 and the first molding cavity 111 enclose an injection space 30. When the mold is opened, the upper mold 20 moves away from the lower mold 10, and then the ejector rod 22 drives the sliding seat 121 to move away from the first molding cavity 111. The sliding seat 121 drives the first slider 122 to move away from the first molding cavity 111. The forming portion 1242 of the barb 124 is clamped in the product 200 processed by injection molding. The first slider 122 pushes against the connecting portion 1241 of the barb 124 through the hole wall of the moving hole 1221 to move downward until the forming portion 1242 disengages from the product 200. Then the first slider 122 abuts against the second slider 123, and further pushes the second slider 123 away from the first molding cavity 111. The second slider 123 drives the barb 124 to move away from the first molding cavity 111. When the ejector rod 22 moves out of the inclined hole 1214, the first slider 122 and the barb 124 are separated from the product 200, and the mold opening is completed. In the injection mold 100 provided by the embodiment of the present application, when the lower mold 10 and the upper mold 20 are closed, the insert 12 is driven by the upper mold 20 to move into the injection space 30. When the mold is opened, the insert 12 is driven by the upper mold 20 to separate from the formed product 200 without an additional power source, effectively reducing the volume of the injection mold 100 and lowering the manufacturing cost of the injection mold 100.
[0049] The working process of the injection mold 100 provided by the embodiment of the present application is generally as follows:
[0050] Before the lower mold 10 and the upper mold 20 are closed, please refer to Figure 9, the sliding seat 121 in the insert 12 is located at a position away from the first molding cavity 111. At this time, the third elastic member 129 abuts against the sliding seat 121 to keep the sliding seat 121 stable in position. The first slider 122 is located at a position away from the first molding cavity 111 along with the sliding seat 121. At this time, the first slider 122 abuts against the second slider 123 to make the second slider 123 approach the driving end 1213 of the sliding seat 121. The second slider 123 compresses the first elastic member 127, and the second elastic member 128 abuts against the connecting portion 1241 of the retaining hook 124 to keep it away from the second slider 123, so that the molding portion 1242 is away from the receiving groove 1222. And under the pushing action of the moving hole 1221 of the first slider 122, the connecting portion 1241 and the connecting member 125 rotate, and further make the upper end of the molding portion 1242 not higher than the upper end of the first slider 122.
[0051] When the lower mold 10 and the upper mold 20 are closed, please refer to Figure 8 , the upper template 21 moves downward relative to the lower template 11, and the lever 22 is inserted into the inclined hole 1214 of the sliding seat 121, and then drives the sliding seat 121 to move toward the first molding cavity 111. The sliding seat 121 compresses the third elastic member 129, and at the same time drives the first slider 122 to move toward the first molding cavity 111. The first elastic member 127 abuts against the second slider 123 to move toward the first molding cavity 111. The second slider 123 abuts against the second elastic member 128 to move toward the first molding cavity 111. The second elastic member 128 abuts against the retaining hook 124 to move toward the first molding cavity 111. When the second slider 123 abuts against the side wall of the limiting groove 1262a close to the first molding cavity 111, the second slider 123 stops moving toward the first molding cavity 111, and then restricts the retaining hook 124 from continuing to move toward the first molding cavity 111 through the connecting member 125. Please refer to Figure 7 , at this time, the lever 22 continues to push the sliding seat 121 toward the first molding cavity 111. The sliding seat 121 drives the first slider 122 to continue to move toward the first molding cavity 111. The first slider 122 drives the retaining hook 124 to rotate around the connection between the connecting member 125 and the second slider 123 through the moving hole 1221, so that the molding portion 1242 of the retaining hook 124 extends upward out of the first slider 122 and makes the molding portion 1242 snap into the receiving groove 1222. When the upper template 21 abuts against the lower template 11, the lever 22 stops driving the sliding seat 121 to move. The first slider 122 extends into the first molding cavity 111, the molding portion 1242 of the retaining hook 124 snaps into the receiving groove 1222, and the upper end of the molding portion 1242 protrudes from the upper surface of the first chute 112. Please refer to Figure 6 , at this time, the first molding cavity 111 and the second molding cavity 211 are combined into an injection molding space 30. The insert 12 is inserted into the injection molding space 30 so that the structure of the product 200 is formed in the injection molding space 30.
[0052] After the lower mold 10 and the upper mold 20 are closed, injection molding can be carried out on the injection molding space 30 through the injection hole 212 of the upper template 21 to process and form the product 200.
[0053] When the lower mold 10 and the upper mold 20 are opened, please refer to Figure 6 and Figure 7 , the upper template 21 moves away from the lower template 11, the lever 22 moves out of the inclined hole 1214, and then drives the sliding seat 121 to move away from the first molding cavity 111. The third elastic member 129 pushes the sliding seat 121 away from the first molding cavity 111, facilitating the separation of the upper template 21 and the lower template 11. Please refer to Figure 7 and Figure 8 , in the first stage of mold opening, the second slider 123 is located at one end of the limiting groove 1262a close to the first molding cavity 111 under the pushing action of the first elastic member 127, and the position of the second slider 123 remains unchanged. The relative position of the barb 124 and the second slider 123 remains unchanged under the pushing of the second elastic member 128. At this time, the sliding seat 121 drives the first slider 122 away from the first molding cavity 111, and the first slider 122 drives the barb 124 to rotate around the connection part of the connecting member 125 and the second slider 123 through the moving hole 1221, so that the molding part 1242 of the barb 124 moves downward, and then the molding part 1242 is separated from the product 200. Please refer to Figure 8 and Figure 9 , in the second stage of mold opening, the sliding seat 121 continues to drive the first slider 122 away from the first molding cavity 111. The first slider 122 abuts against the second slider 123, and then pushes the second slider 123 away from the first molding cavity 111. The second slider 123 drives the barb 124 away from the first molding cavity 111, that is, away from the product 200, until the upper mold 20 and the lower mold 10 are separated, and the molding part 1242 of the barb 124 is separated from the product 200, facilitating material taking.
[0054] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.
Claims
1. An injection mold, characterized in that, Comprising: The lower mold, including a lower template and inserts disposed on the lower template. The lower template is provided with a first molding cavity and a chute that communicate with each other. The insert is slidably disposed in the chute. The insert includes a sliding seat slidably connected to the chute, a first slider connected to the sliding seat, a second slider slidably disposed on the sliding seat, and barbs respectively connected to the first slider and the second slider. The sliding seat includes a bearing end and a driving end connected to each other. The driving end protrudes upward from one end of the bearing end away from the first molding cavity and protrudes above the bearing end. The driving end is provided with an inclined hole extending from the upper end to the lower end along the driving end. The inclined hole includes a first end and a second end disposed opposite to each other. The first end is located at the driving end and abuts against one side of the bottom of the chute. The second end is located on the side of the driving end away from the bottom of the chute, and the distance between the first end and the bearing end is greater than the distance between the second end and the bearing end. The first slider is connected to the bearing end. The first slider is provided with a moving hole along the moving direction of the first slider. One end of the moving hole faces the driving end, and the other end faces the first molding cavity. The end of the moving hole facing the driving end is higher than the end of the moving hole facing the first molding cavity. The second slider is slidably disposed on the upper side of the bearing end. The barb includes a connecting portion and a molding portion connected to each other. The connecting portion is slidably disposed in the moving hole and is movably connected to the second slider. The molding portion abuts against the first slider, and the upper end of the molding portion protrudes above the first slider. The upper mold, covering the lower mold, includes an upper template and a lever connected to one side of the upper template facing the lower template. The upper template is provided with a second molding cavity and an injection hole that communicate with each other. The second molding cavity is disposed on one side of the upper template facing the lower template. Wherein, When the upper mold and the lower mold are closed, the lever is inserted into the inclined hole and pushes the sliding seat to move towards the first molding cavity, so that the first slider and the barb move into the first molding cavity, and further the first molding cavity and the second molding cavity enclose an injection space.
2. The injection mold according to claim 1, wherein The sliding seat is provided with two sliding protrusions, both of the two sliding protrusions extend along the moving direction of the sliding seat, and the two sliding protrusions are spaced apart on both sides of the sliding seat facing the groove wall of the chute; The bottom of the chute is provided with two supporting protrusions, both of the two supporting protrusions extend along the moving direction of the sliding seat and are respectively arranged corresponding to the two sliding protrusions; The insert further includes two limiting components, each of the limiting components includes a first limiting member, the two first limiting members are respectively connected corresponding to the two supporting protrusions and both abut against the upper sides of the corresponding sliding protrusions, and the first limiting member cooperates with the bottom of the chute to limit the movement track of the sliding seat.
3. The injection mold according to claim 2, wherein Each of the limiting components includes a second limiting member, two of the second limiting members are respectively arranged corresponding to the two first limiting members, and are both connected to the side of the corresponding first limiting member away from the bottom of the slot of the slide slot, and each of the second limiting members has a limiting slot formed on a side facing the sliding seat; Both ends of the second sliding block opposite to the two second limiting members are provided with limiting protrusions, and each of the limiting protrusions is slidably disposed in the limiting groove of the corresponding second limiting member.
4. The injection mold according to claim 3, characterized in that: The insert further includes a connecting member, and the connecting member is connected to one end of the connecting portion facing the second sliding block; The second sliding block is provided with a slot, and one end of the connecting member away from the connecting portion is movably disposed in the slot.
5. The injection mold according to claim 4, characterized in that: The insert also includes two first elastic members, which are respectively arranged in the two limiting grooves, each of the first elastic members abuts against a side of the corresponding limiting protrusion away from the first sliding block, and the first elastic member pushes the second sliding block to move toward the first sliding block.
6. The injection mold according to claim 4, characterized in that: The insert further includes a second elastic member, which is sleeved on the connecting member, and two ends of the second elastic member are respectively in contact with the connecting portion and the second sliding block, and the second elastic member is used to push the connecting portion away from the second sliding block.
7. The injection mold according to claim 1, characterized in that: The lower mold plate is further provided with a stopper, which is arranged between the first molding cavity and the slide groove, and the stopper stops the sliding seat to limit the distance that the sliding seat moves toward the first molding cavity.
8. The injection mold according to claim 7, characterized in that: The insert further includes a third elastic member, two ends of which are respectively in contact with the stopper and the sliding seat, and the third elastic member is used to push the sliding seat away from the first molding cavity.
9. The injection mold according to claim 1, characterized in that: The barb further includes a reinforcing portion, which is disposed between the connecting portion and the forming portion. An accommodating groove adapted to the reinforcing portion and the forming portion is formed at one end of the movable hole facing the first forming cavity.
10. The injection mold according to claim 1, characterized in that: The lower template is also provided with a through hole, which extends vertically downward from the bottom of the slide groove. The through hole accommodates one end of the lever extending out of the inclined hole when the mold is closed.