Injection mold

Abstract

The injection mold comprises a mold core assembly and an elastic connecting piece, the mold core assembly comprises a first mold core and a second mold core which are oppositely arranged, the first mold core and the second mold core jointly define and form a containing hole, the containing hole is used for containing a workpiece, and the mold core assembly is provided with a containing groove and an injection molding channel. The injection molding channel communicates with the containing hole, the containing hole is formed in the groove bottom of the containing groove and communicates with the containing groove, and the containing groove is used for containing a workpiece; the elastic connecting piece is connected with the first mold core and the second mold core and used for providing elastic force for the first mold core and the second mold core to be close to each other, so that the first mold core and the second mold core clamp a workpiece in the containing hole, and the workpiece is clamped by the elastic connecting piece under the action of external force. The first die core and the second die core can overcome the elastic force provided by the elastic connecting piece to be away from each other so as to broach the containing hole, and therefore a workpiece can enter the containing hole conveniently. The workpiece feeding device can improve the workpiece feeding efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding technical field, especially a kind of injection mold. BACKGROUND

[0002] With the development of the times, the popularization of mobile phone equipment makes the competition of manufacturing industry more and more fierce. Among them, the card holder push rod in mobile phone type electronic product is mainly composed of a cylindrical workpiece and part of liquid silicone, and due to the relatively small volume of the workpiece, in the related art, when the workpiece is placed in the accommodating hole of the injection mold, the worker often needs to manually clamp and place with tweezers, and accordingly, the workpiece loading process in the injection mold is relatively cumbersome, which is difficult to meet the production demand. UTILITARIAN CONTENT

[0003] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the utility model provides an injection mold for improving workpiece loading efficiency.

[0004] According to the injection mold of the utility model embodiment, the first die core and the second die core are connected by the elastic connecting piece, and the elastic connecting piece provides the elastic force for the first die core and the second die core to move close to each other, so that the first die core and the second die core can clamp the workpiece in the accommodating hole, and the first die core and the second die core can overcome the elastic force provided by the elastic connecting piece to move away from each other under the action of external force, so as to expand the accommodating hole, so as to facilitate the workpiece to enter the accommodating hole.

[0005] According to the injection mold of the utility model embodiment, at least the following technical effects are achieved:

[0006] In the use process of the injection mold, the workpiece is placed in the accommodating groove, an external force is applied on the first mold core and the second mold core by the worker, so that the first mold core and the second mold core can overcome the elastic force of the elastic connecting piece and move away from each other, the diameter of the accommodating hole is increased, then the workpiece in the accommodating groove can be smoothly put into the accommodating hole by shaking the mold core assembly, when the workpiece is completely accommodated in the accommodating hole, the external force applied on the first mold core and the second mold core is removed, under the action of the elastic force of the elastic connecting piece, the first mold core and the second mold core move close to each other, so that the diameter of the accommodating hole is reduced, and the first mold core and the second mold core can clamp the workpiece in the accommodating hole, then liquid silicone is injected into the accommodating hole through the injection channel, so as to form a silicone ring on the peripheral surface of the workpiece, thereby completing the injection of the workpiece. From the above use process of the injection mold, it can be clearly known that in the injection mold, after the worker places the workpiece in the accommodating groove, the workpiece in the accommodating groove can be automatically loaded into the accommodating hole by driving the first mold core and the second mold core to move away from each other and shaking the mold core assembly. For small-sized workpieces, the worker does not need to place the workpieces in the accommodating holes one by one, and the workpiece loading process in the accommodating hole is more simple and convenient, and the workpiece loading efficiency of the mold core assembly is improved.

[0007] According to the injection mold of some embodiments of the present application, the first mold core and the second mold core are formed with a groove therebetween, and under the action of an external force, the extrusion block can be inserted into the groove to push the first mold core and the second mold core away from each other.

[0008] According to the injection mold of some embodiments of the present application, the mold base is provided with a heating structure, and the mold core assembly is detachably arranged on the mold base.

[0009] According to the injection mold of some embodiments of the present application, the mold base is provided with a sliding groove, and the mold core assembly is slidably arranged in the sliding groove.

[0010] According to the injection mold of some embodiments of the present application, the groove wall of the sliding groove is provided with a first protruding portion, and the first protruding portion is slidably arranged in the accommodating groove.

[0011] According to the injection mold of some embodiments of the present application, the mold base comprises a seat body, a first limiting piece and a second limiting piece, the first limiting piece and the second limiting piece are detachably arranged on the seat body, the first limiting piece and the second limiting piece form a sliding groove therebetween, and the first limiting piece is provided with a first protruding portion at one end close to the sliding groove.

[0012] According to the injection mold of some embodiments of the present application, the first mold core is provided with a first heat insulating piece, the second mold core is provided with a second heat insulating piece, and the elastic connecting piece is detachably connected with the first heat insulating piece and the second heat insulating piece.

[0013] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of embodiments, given by way of example, and from the appended drawings.

[0015] Figure 1 Structure diagram of the injection mold of one embodiment of the present application;

[0016] Figure 2 Structure diagram of the mold core assembly in the injection mold of the present application; Figure 1

[0017] Structure diagram of the mold core assembly in the injection mold of the present application; Figure 3 Figure 2 Structure diagram of the mold core assembly in the injection mold of the present application;

[0018] Figure 4 Structure diagram of the mold core assembly in the injection mold of the present application; Figure 2 Structure diagram of the mold core assembly in the injection mold of the present application;

[0019] Figure 5 Structure diagram of the injection mold of the present application with one mold core assembly removed; Figure 1

[0020] Flow chart of the use of the injection mold of the present application. Figure 6 Reference signs:

[0021] Mold core assembly 100, accommodating hole 100a, accommodating groove 100b, injection channel 100c, groove 100d, first mold core 110, first heat insulation piece 111, second mold core 120, second heat insulation piece 121;

[0022] Mold base 200, sliding groove 200a, first protruding part 200b, seat body 210, first limiting piece 220, second limiting piece 230.

[0023] DETAILED DESCRIPTION

[0024] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0025] ​​In the description of the utility model, it is understood that, if the direction description, for example, the direction or position relation of the indication such as upper, lower, left, right, front, back is based on the direction or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and therefore can not be understood as the restriction of the utility model.

[0026] In the description of the utility model, if the first, second is described for the purpose of distinguishing technical features, it can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood broadly, and the person skilled in the art can determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0028] In the related art, the injection mold comprises an upper mold and a lower mold, the lower mold is provided with a heating structure, and the lower mold is provided with a plurality of positioning grooves, for the injection of small size workpieces, the workers need to clamp the workpieces in turn by using tweezers and other tools to feed the workpieces to the lower mold, then the upper mold and the lower mold are closed, and then the injection of the workpieces is completed. Since the workpieces need to be clamped and fed one by one by the workers using tweezers, on the one hand, the feeding efficiency of the workpieces is low, on the other hand, the heating time of the workpieces fed to the lower mold first is longer, accordingly, the size difference caused by the thermal expansion of the workpieces fed to the lower mold first is larger, thereby causing a certain difference between the sizes of the workpieces, affecting the quality of the finished product after the subsequent injection is completed.

[0029] The utility model discloses an injection mold and a workpiece feeding device thereof. Figures 1 to 5 The utility model discloses an injection mold and a workpiece feeding device thereof.

[0030] The utility model discloses an injection mold and a workpiece feeding device thereof. Figures 1 to 3The utility model discloses a kind of injection mould, including die pin subassembly 100 and elastic connecting piece, die pin subassembly 100 includes oppositely arranged first die pin 110 and second die pin 120, first die pin 110 and second die pin 120 are jointly defined to form and accommodate hole 100a, accommodate hole 100a is used to place workpiece, die pin subassembly 100 is provided with accommodating groove 100b and injection channel 100c, injection channel 100c is communicated with accommodate hole 100a, accommodate hole 100a is located in the groove bottom of accommodating groove 100b, and in accommodating groove 100b communication, accommodating groove 100b is used to accommodate workpiece;Elastic connecting piece is connected with first die pin 110 and second die pin 120 respectively, and elastic connecting piece is used to provide first die pin 110 and second die pin 120 with elastic force to each other to make first die pin 110 and second die pin 120 clamp workpiece in accommodate hole 100a, under external force, first die pin 110 and second die pin 120 can overcome the elastic force provided by elastic connecting piece to each other to be far away, to reaming accommodate hole 100a, so as to facilitate workpiece to enter accommodate hole 100a.

[0031] In the use process of the injection mould of the application, the workpiece is placed in the accommodating groove 100b, and the staff applies external force on the first die pin 110 and the second die pin 120, so that the first die pin 110 and the second die pin 120 can overcome the elastic force of the elastic connecting piece to be far away from each other, so that the hole diameter of the accommodate hole 100a is increased, then by shaking the die pin subassembly 100, the workpiece in the accommodating groove 100b can smoothly enter the accommodate hole 100a, when the workpiece is completely accommodated in the accommodate hole 100a, the external force applied on the first die pin 110 and the second die pin 120 is removed, under the action of the elastic force of the elastic connecting piece, the first die pin 110 and the second die pin 120 are close to each other, so that the hole diameter of the accommodate hole 100a is reduced, and the first die pin 110 and the second die pin 120 can clamp the workpiece in the accommodate hole 100a, then liquid silicone is injected into the accommodate hole 100a through the injection channel 100c to form a silicone ring on the peripheral surface of the workpiece, thereby completing the injection of the workpiece. From the above use process of the injection mould, it can be clearly known that in the injection mould of the application, after the staff places the workpiece in the accommodating groove 100b, by driving the first die pin 110 and the second die pin 120 to separate from each other and shaking the die pin subassembly 100, the workpiece in the accommodating groove 100b can be automatically loaded into the accommodate hole 100a, for the workpiece with small size, the staff does not need to clamp and place the workpiece in the accommodate hole 100a one by one, the feeding process of the workpiece in the accommodate hole 100a is more simple and convenient, and the feeding efficiency of the workpiece in the die pin subassembly 100 is improved.

[0032] It can be understood that, in the process of shaking the workpiece, the two side groove walls of the containing groove 100b can reduce the possibility of the workpiece leaving the containing groove 100b, thereby increasing the possibility of the workpiece falling into the containing hole 100a.

[0033] Reference Figure 4 In some embodiments of the utility model, the injection mold further comprises a squeezing block, a groove 100d is formed between the first mold core 110 and the second mold core 120, under the action of external force, the squeezing block can be inserted into the groove 100d to push the first mold core 110 and the second mold core 120 away from each other. It can be understood that the staff can drive the injection mold to approach the squeezing block and make the squeezing block inserted into the groove 100d, at this time, the first mold core 110 and the second mold core 120 can be separated from each other under the support of the squeezing block, so that the aperture of the containing hole 100a is increased, at this time, the workpiece in the containing groove 100b is more easily into the containing hole 100a.

[0034] In further embodiments of the utility model, the squeezing block is a wedge-shaped block, during the process of inserting the wedge-shaped block into the groove 100d, the two opposite inclined surfaces of the wedge-shaped block can push the first mold core 110 and the second mold core 120 away from each other respectively.

[0035] In some embodiments of the utility model, the groove bottom of the containing groove 100b is provided with a plurality of containing holes 100a in communication with the containing groove 100b.

[0036] It can be understood that, since the groove bottom of the containing groove 100b is provided with a plurality of containing holes 100a in communication with the containing groove 100b, after the staff separates the first mold core 110 and the second mold core 120 from each other to complete the reaming of the containing hole 100a, the staff can make the plurality of workpieces in the containing groove 100b be contained in the respective containing holes 100a by shaking the mold core assembly 100, thereby completing the feeding of the workpieces in the plurality of containing holes 100a at one time.

[0037] It should be noted that, after the workpiece is fed into the containing hole 100a in the mold core assembly 100, the workpiece in the containing hole 100a needs to be injection molded, and during the injection molding process, the workpiece needs to be heated.

[0038] Reference Figure 1 And Figure 5 In some embodiments of the utility model, the injection mold further comprises a mold base 200, the mold base 200 is provided with a heating structure, and the mold core assembly 100 is detachably arranged on the mold base 200.

[0039] It can be understood that, since the heating structure is arranged on the mold base 200, and the mold core assembly 100 is detachably arranged on the mold base 200, after the various workpieces are loaded on the mold core assembly 100, the mold core assembly 100 can be installed on the mold base 200, so that the various workpieces in the mold core assembly 100 can start heating at the same time, the heating time difference of the various workpieces on the mold core assembly 100 is smaller, the size difference between the various workpieces is smaller, and after the injection molding of the various workpieces on the mold core assembly 100 is completed, the quality of the finished product is higher.

[0040] As shown in Figure 3 and Figure 4 In some embodiments, a sliding groove 200a is arranged on the mold base 200, and the mold core assembly 100 is slidably arranged in the sliding groove 200a. It can be understood that, by slidably arranging the mold core assembly 100 in the sliding groove 200a, the mold core assembly 100 can be moved to a predetermined position on the mold base 200, which facilitates the installation of the mold core assembly 100 on the mold base 200, and reduces the possibility of position deviation of the mold core assembly 100 relative to the mold base 200.

[0041] As shown in Figure 5 In some embodiments, the groove wall of the sliding groove 200a is provided with a first protruding portion 200b, and the first protruding portion 200b is slidably arranged in the accommodating groove 100b.

[0042] It can be understood that, during the sliding of the mold core assembly 100 relative to the mold base 200 along the sliding groove 200a, the first protruding portion 200b can be arranged in the accommodating groove 100b, at this time, under the limiting resistance of the first protruding portion 200b, the probability of the mold core assembly 100 being separated from the sliding groove 200a can be reduced, so as to further reduce the probability of position deviation of the mold core assembly 100 relative to the mold base 200; at the same time, since the first protruding portion 200b is arranged in the accommodating groove 100b, after the mold core assembly 100 is installed on the mold base 200, the first protruding portion 200b can close the aperture of the accommodating hole 100a, so as to reduce the probability of the workpiece in the accommodating hole 100a being automatically separated from the accommodating hole 100a during the injection molding.

[0043] As shown in Figure 5As shown, in one embodiment, the mold base 200 comprises a base body 210, a first limiting piece 220 and a second limiting piece 230, the first limiting piece 220 and the second limiting piece 230 are detachably arranged on the base body 210, a sliding groove 200a is formed between the first limiting piece 220 and the second limiting piece 230, and the first limiting piece 220 is provided with a first protruding part 200b at one end close to the sliding groove 200a. It can be understood that for different specifications of the mold core assembly 100, the workers replace the first limiting piece 220 and the second limiting piece 230 of different sizes to adjust the width size of the sliding groove 200a between the first limiting piece 220 and the second limiting piece 230, so that the mold core assembly 100 of different sizes can be installed on the mold base 200, and the versatility of the mold base 200 is improved.

[0044] Reference Figure 1 In some embodiments of the present application, the first mold core 110 is provided with a first heat insulation piece 111, the second mold core 120 is provided with a second heat insulation piece 121, and the elastic connecting piece is detachably connected with the first heat insulation piece 111 and the second heat insulation piece 121. It can be understood that by connecting the elastic connecting piece with the first heat insulation piece 111 and the second heat insulation piece 121, the possibility of damage of the elastic connecting piece due to heating can be reduced; by arranging the first heat insulation piece 111 and the second heat insulation piece 121 on the first mold core 110 and the second mold core 120 respectively, the workers can conveniently place the mold core assembly 100 on the mold base 200 or take it off from the mold base 200.

[0045] In further embodiments of the present application, the first heat insulation piece 111 is threadedly connected to the first mold core 110, and the second heat insulation piece 121 is threadedly connected to the second mold core 120.

[0046] The following reference Figure 6 A kind of injection molding method of the present application is described in detail.

[0047] Reference Figure 6 A kind of injection molding method, applied to the injection mold of the above-mentioned embodiments, specifically comprising the following steps:

[0048] Step S100, place multiple workpieces in the containing groove 100b;

[0049] Step S200, apply external force to the first mold core 110 and the second mold core 120, so that the first mold core 110 and the second mold core 120 overcome the elastic force of the elastic connecting piece to move away from each other, and complete the reaming of the containing hole 100a;

[0050] Step S300, shake the mold core assembly 100, so that the workpieces in the containing groove 100b completely fall into the containing hole 100a;

[0051] Step S400, the external force applied to the first die 110 and the second die 120 is cancelled, the first die 110 and the second die 120 are close to each other under the elastic force of the elastic connecting piece, and the shrinkage hole of the containing hole 100a is completed, so as to clamp the workpiece in the containing hole 100a.

[0052] It can be understood that the worker places the workpiece in the containing groove 100b, and then applies an external force on the first die 110 and the second die 120, so that the first die 110 and the second die 120 overcome the elastic force of the elastic connecting piece to move away from each other, the aperture of the containing hole 100a is increased, and then the workpiece in the containing groove 100b can smoothly enter the containing hole 100a by shaking the die assembly 100. When the workpiece is completely contained in the containing hole 100a, the external force applied to the first die 110 and the second die 120 is cancelled, the first die 110 and the second die 120 are close to each other under the elastic force of the elastic connecting piece, so as to clamp the workpiece in the containing hole 100a. Then, the injection molding channel 100c is used to inject the containing hole 100a, so as to realize the injection molding of the workpiece.

[0053] It can be understood that after the reaming of the containing hole 100a is completed, the workpiece in the containing groove 100b can automatically fall into each containing hole 100a by shaking the die assembly 100, so as to complete the feeding of the workpiece in each containing hole 100a. The workpiece personnel do not need to clamp and feed the workpiece one by one into each containing hole 100a, the feeding speed of the workpiece in the die assembly 100 is faster, and the working strength of the worker is reduced.

[0054] In some embodiments of the utility model, the injection mold further comprises a squeezing block, and a groove 100d is formed between the first die 110 and the second die 120; in step S200, the following steps are included:

[0055] Step S210, the die assembly 100 and the squeezing block are driven to move close to each other, so that the squeezing block is inserted into the groove 100d, and the first die 110 and the second die 120 are moved away from each other under the internal support of the squeezing block.

[0056] It can be understood that the worker can drive the die assembly 100 to move close to the squeezing block, so that the squeezing block is inserted into the groove 100d of the die assembly 100, so that the first die 110 and the second die 120 are moved away from each other under the internal support of the squeezing block. At this time, the aperture of the containing hole 100a is increased, and the workpiece can more smoothly fall into the containing hole 100a.

[0057] Reference Figure 6In some embodiments of the utility model, the injection mold further comprises a mold base 200; the injection method further comprises the following steps:

[0058] Step S500, install the mold core assembly 100 loaded with the workpieces on the mold base 200;

[0059] Step S600, input the injection liquid into the injection channel 100c to complete the injection of the workpieces;

[0060] Step S700, take off the mold core assembly 100 from the mold base 200;

[0061] Step S800, take out the workpieces after injection from the mold core assembly 100.

[0062] It should be noted that the mold base 200 is provided with a heating structure, after the mold core assembly 100 is installed on the mold base 200, the mold base 200 can synchronously heat each workpiece in the mold core assembly 100, so that the heating time of each workpiece in the mold core assembly 100 is basically the same, so as to reduce the size difference between each workpiece due to thermal expansion and cold shrinkage.

[0063] It can be understood that the mold core assembly 100 loaded with the workpieces is placed on the mold base 200, then the injection liquid is input into the injection channel 100c, so that the injection liquid flows into the accommodation hole 100a, so that the injection part is formed on the peripheral surface of the workpiece in the accommodation hole 100a, then the mold core assembly 100 is taken off from the mold base 200, and the workpiece after injection is taken out from the mold core assembly 100.

[0064] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. An injection mold, characterized in that, include: A mold core assembly includes a first mold core and a second mold core disposed opposite to each other. The first mold core and the second mold core together define a receiving hole for placing a workpiece. The mold core assembly is provided with a receiving groove and an injection channel. The injection channel communicates with the receiving hole. The receiving hole is located at the bottom of the receiving groove and communicates with the receiving groove. The receiving groove is used to receive a workpiece. An elastic connector is provided, which is connected to the first mold core and the second mold core respectively. The elastic connector is used to provide an elastic force to bring the first mold core and the second mold core closer to each other, so that the first mold core and the second mold core clamp the workpiece in the receiving hole. Under the action of external force, the first mold core and the second mold core can overcome the elastic force provided by the elastic connector and move away from each other, so as to enlarge the receiving hole, so as to facilitate the workpiece entering the receiving hole.

2. The injection mold according to claim 1, characterized in that, It also includes a clamping block, and a groove is formed between the first mold core and the second mold core. Under the action of external force, the clamping block can be inserted into the groove to push the first mold core and the second mold core away from each other.

3. The injection mold according to claim 1, characterized in that, It also includes a mold base, on which a heating structure is provided, and the mold core assembly is detachably mounted on the mold base.

4. The injection mold according to claim 3, characterized in that, The mold base is provided with a sliding groove, and the mold core assembly is slidably disposed in the sliding groove.

5. The injection mold according to claim 4, characterized in that, The groove wall is provided with a first protrusion, which is slidably inserted into the receiving groove.

6. The injection mold according to claim 5, characterized in that, The mold base includes a base body, a first limiting member and a second limiting member. Both the first limiting member and the second limiting member are detachably mounted on the base body. A sliding groove is formed between the first limiting member and the second limiting member. The first limiting member has a first protrusion at one end near the sliding groove.

7. The injection mold according to claim 3, characterized in that, The first mold core is provided with a first heat insulation component, and the second mold core is provided with a second heat insulation component. The elastic connector is detachably connected to the first heat insulation component and the second heat insulation component respectively.

Images