Injection molding mold
By setting a combined structure of the toggle rod and the holder in the injection molding mold, the problem of the slider retreating under high pressure is solved, and the stability and sealing of the injection molding are improved.
Patent Information
- Application Number
- CN202422353492.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The existing injection molding molds are easily retracted under high pressure, resulting in damage to the sealing of the product molding cavity and affecting the molding stability.
By setting a toggle lever and a holder in the mold, the toggle lever is inserted into the toggle hole, and the holder part of the holder is inserted into the holder limit slot to limit the sliding stroke of the slider, and stably apply a repulsive force through the holder to prevent the slider from retreating and ensure the sealing of the product forming cavity.
Improves the stability of injection molding, prevents the slider from retreating under high pressure, maintains the sealing of the product molding cavity, and reduces maintenance and use costs.
Smart Images
Figure CN223199432U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding mold. Background Art
[0002] In current injection molding molds, the slider located in the lower mold plate is pushed to move closer to the middle of the lower mold plate by the toggle rod of the upper mold plate when the mold is closed. At the same time, the push member connected to the upper mold plate abuts against the upper surface of the lower mold plate and abuts against the outer side of the slider to ensure that the slider is stably closed to form the product molding cavity.
[0003] However, when the injection pressure is high, the slider is forced to retreat under the action of high pressure and squeeze the push piece, thereby damaging the sealing of the product molding cavity and affecting the stability of product molding. Utility Model Content
[0004] In view of the above situation, it is necessary to provide an injection molding die to improve molding stability.
[0005] The present invention provides an injection molding die, comprising:
[0006] The upper mold assembly includes an upper mold plate, a toggle rod, and a supporting member; wherein one end of the toggle rod is connected to the upper mold plate; one end of the supporting member is connected to the upper mold plate, and the other end of the supporting member is provided with a supporting portion;
[0007] The lower mold assembly includes a lower mold plate and a slider; wherein the slider is slidably arranged in the lower mold plate; a toggle hole is provided on the slider; a supporting limit groove is provided on the lower mold plate; the slider can slide toward the product molding cavity under the push of the supporting member during the mold closing process; the toggle rod can be inserted into the toggle hole during the mold closing process to limit the sliding stroke of the slider; the supporting portion can be inserted into the supporting limit groove during the mold closing process to limit the movement of the supporting member on the lower mold plate.
[0008] When the above-mentioned injection molding mold is closed, the toggle rod is inserted into the toggle hole, and the supporting member pushes the slider toward the product molding cavity, so that the slider pushes the workpiece to be injected in the product molding cavity under the drive of the toggle rod and the supporting member, so that the preset area of the workpiece to be injected is injection-molded into the plastic part, and the supporting part is inserted into the supporting limit groove so that the lower template supports the supporting member inserted into the supporting limit groove, so that the supporting member stably applies a supporting force to the slider, preventing the slider from retreating when the injection pressure is high and destroying the sealing of the product molding cavity, which is beneficial to ensure that the slider stably maintains the sealing of the product molding cavity, thereby improving the molding stability.
[0009] In some embodiments, the lower mold assembly further includes a push wear-resistant plate; wherein the push wear-resistant plate is arranged on a side of the sliding block close to the supporting member.
[0010] In some embodiments, the side of the resisting member close to the slider is provided with a resisting inclined portion;
[0011] The push inclined portion can abut against the push wear-resistant plate during the mold closing process to push the slider to slide toward the product molding cavity; the side of the supporting portion close to the slider belongs to the push inclined portion.
[0012] In some embodiments, the lower template includes a template body and a support insert, the template body is arranged relative to the upper template and is open and fitted, the slider is slidably arranged in the template body, and the support insert is arranged in the template body and is provided with the supporting limit groove.
[0013] In some embodiments, the lower mold assembly further includes a wear-resistant plate at the bottom of the slider; the wear-resistant plate at the bottom of the slider is arranged below the slider in the template body;
[0014] The side surfaces of the support insert close to the slider respectively abut against the slider and the wear-resistant plate at the bottom of the slider.
[0015] In some embodiments, the top of the support insert is higher than the bottom of the slider; the bottom of the support insert is not higher than the bottom of the wear-resistant plate at the bottom of the slider.
[0016] In some embodiments, a support insert is provided with an insert limiting groove on a side away from the upper template.
[0017] In some embodiments, the insert limiting groove is a step groove, which is located at the connection position between the side of the supporting insert away from the upper template and the side of the supporting insert away from the slider.
[0018] In some embodiments, the lower mold assembly further comprises a lower mold core; the lower mold core is disposed on the lower mold plate; a bottom pressing plate is disposed on the lower mold core;
[0019] Wherein, during the mold closing process, one side of the bottom pressing plate abuts against the slider, and the other opposite side of the bottom pressing plate abuts against the workpiece to be injected in the product molding cavity.
[0020] In some embodiments, the upper mold assembly is provided with a supporting connection groove; the supporting member includes a supporting connection portion; and the supporting connection portion is provided in the supporting connection groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic diagram of the three-dimensional structure of the injection molding mold provided in an embodiment of the present application.
[0022] Figure 2 for Figure 1 The schematic cross-sectional view of the injection molding die along the II-II direction is shown.
[0023] Figure 3 for Figure 2 The schematic diagram of the structural decomposition of the supporting part, support insert, slider, push wear plate and wear plate at the bottom of the slider in the injection molding mold shown.
[0024] Description of main component symbols
[0025] Injection molding mold 100
[0026] Upper mold assembly 101
[0027] Lower mold assembly 102
[0028] Upper template 10
[0029] Abutting connecting groove 11
[0030] Toggle lever 20
[0031] Abutment 30
[0032] Abutting portion 31
[0033] Push slope part 32
[0034] First lubrication groove 321
[0035] Abutting connecting portion 33
[0036] Lower template 40
[0037] Retaining limit groove 41
[0038] Template 42
[0039] Support insert 43
[0040] Insertion limit slot 431
[0041] Entry Section 432
[0042] Locking unit 433
[0043] Slider 50
[0044] Toggle hole 51
[0045] Supporting part 52
[0046] Push wear plate 60
[0047] Slider bottom wear plate 70
[0048] Second lubrication groove 71
[0049] Avoidance hole 72
[0050] Lower mold core 80
[0051] Bottom pressure plate 90 DETAILED DESCRIPTION
[0052] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.
[0053] 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 accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0054] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, or mutual communication; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0055] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0056] See also Figure 1 , an embodiment of the present application provides an injection molding die 100, comprising an upper mold assembly 101 and a lower mold assembly 102, for injection molding a product (not shown).
[0057] See also Figure 2 and Figure 3The upper mold assembly 101 includes an upper mold plate 10, a toggle rod 20 and a supporting member 30. One end of the toggle rod 20 is connected to the upper mold plate 10, one end of the supporting member 30 is connected to the upper mold plate 10, and the other end of the supporting member 30 is provided with a supporting portion 31. The lower mold assembly 102 includes a lower mold plate 40 and a slider 50. The slider 50 is slidably arranged in the lower mold plate 40. The slider 50 can slide toward the product molding cavity under the push of the supporting member 30. The lower mold plate 40 is provided with a supporting limit groove 41. The supporting portion 31 can be inserted into the supporting limit groove 41 to limit the movement of the supporting member 30 on the lower mold plate 40. The slider 50 is provided with a toggle hole 51. The toggle rod 20 can be inserted into the toggle hole 51 to limit the sliding stroke of the slider 50.
[0058] When the above-mentioned injection molding mold 100 is closed, the toggle rod 20 is inserted into the toggle hole 51, and the supporting member 30 supports the slider 50 to move toward the product molding cavity, so that the slider 50 is driven by the toggle rod 20 and the supporting member 30 to support the workpiece to be injected in the product molding cavity, so that the preset area of the workpiece to be injected is injection-molded into the plastic part, and the supporting portion 31 is inserted into the supporting limit groove 41 so that the lower template 40 supports the supporting member 30 inserted into the supporting limit groove 41, so that the supporting member 30 stably applies a supporting force to the slider 50, preventing the slider 50 from retreating when the injection pressure is large and destroying the sealing of the product molding cavity, which is beneficial to ensure that the slider 50 stably maintains the sealing of the product molding cavity, thereby improving the molding stability.
[0059] It should be noted that the product includes a workpiece and a plastic part injection molded in a preset area of the workpiece.
[0060] See also Figure 2 and Figure 3 In some embodiments, the lower mold assembly 102 further includes a push wear-resistant plate 60 , wherein the push wear-resistant plate 60 is disposed on a side of the slider 50 close to the support member 30 .
[0061] In this way, during the repeated operation of the injection molding mold 100, since the slider 50 and the supporting member 30 will rub against each other repeatedly, a push-resistant wear-resistant plate 60 is provided on the side of the slider 50 close to the supporting member 30 to prevent the slider 50 from being damaged due to repeated friction, which is conducive to maintaining the long-term operation of the slider 50 and reducing maintenance and use costs.
[0062] See also Figure 3 In some embodiments, the sliding body is further provided with a supporting portion 52 , which is protruding from the side of the slider 50 facing the abutting member 30 , and is used to abut against the abutting wear-resistant plate 60 .
[0063] In this way, the supporting portion 52 abuts against the abutting wear-resistant plate 60 , so that the supporting portion 52 can support the abutting wear-resistant plate 60 and prevent the abutting wear-resistant plate 60 from separating from the slider 50 during the friction process with the abutting member 30 .
[0064] See also Figure 3 In some embodiments, a side of the abutting member 30 close to the slider 50 is provided with an abutting inclined portion 32. The abutting inclined portion 32 can abut against the abutting wear-resistant plate 60 during the mold closing process to push the slider 50 toward the product molding cavity. The side of the abutting portion 31 close to the slider 50 belongs to the abutting inclined portion 32.
[0065] In this way, by providing a push inclined portion 32 on the side of the supporting member 30 close to the slider 50, and setting the side of the supporting portion 31 close to the slider 50 to belong to the push inclined portion 32, the contact area between the supporting member 30 and the push wear-resistant plate 60 connected to the slider 50 can be increased, so that the supporting member 30 can stably support the slider 50 through the push wear-resistant plate 60 when the mold is closed, so that the slider 50 can stably maintain the sealing of the product molding cavity when the mold is closed, thereby improving the molding stability.
[0066] See also Figure 2 and Figure 3 In some embodiments, a first lubrication groove 321 is formed on the side of the push ramp portion 32 close to the slider 50 and the side of the push wear plate 60 close to the push ramp portion 32. The first lubrication groove 321 is used to fill a lubricating liquid. For example, the lubricating liquid can be lubricating oil.
[0067] In this way, by opening a first lubrication groove 321 on the push bevel portion 32 and the push wear-resistant plate 60, and by filling the first lubrication groove 321 with lubricating liquid, the friction between the push bevel portion 32 and the push wear-resistant plate 60 can be reduced, avoiding damage caused by excessive friction between the push bevel portion 32 and the push wear-resistant plate 60, which is beneficial to repeated operations of the injection molding mold 100.
[0068] It can be understood that the first lubrication groove 321 is circular in shape, and there are multiple first lubrication grooves 321 , which are evenly arranged on the pushing inclined surface portion 32 and the pushing wear-resistant plate 60 .
[0069] See also Figure 2 In some embodiments, the lower template 40 includes a template body 42 and a support insert 43. The template body 42 is arranged relative to the upper template 10 and is open and fitted. The slider 50 is slidably arranged in the template body 42. The support insert 43 is arranged in the template body 42 and is provided with a supporting limit groove 41.
[0070] In this way, since the material of the template body 42 is generally soft, by setting the template body 42 and the support insert 43 as a split structure, the support insert 43 with a harder material can be used to support the supporting member 30, thereby improving the supporting stability of the support insert 43.
[0071] See also Figure 2 and Figure 3 In some embodiments, the lower mold assembly 102 further includes a slider bottom wear-resistant plate 70; the slider bottom wear-resistant plate 70 is arranged below the slider 50 in the template body 42, and the side of the support insert 43 close to the slider 50 respectively abuts the slider 50 and the slider bottom wear-resistant plate 70.
[0072] In this way, since the slider 50 and the template body 42 will repeatedly rub against each other during repeated operations, a slider bottom wear-resistant plate 70 is set below the slider 50 to prevent the slider 50 from repeatedly rubbing against the template body 42 and damaging the template body 42 made of a softer material, which is beneficial to maintaining the service life of the lower mold assembly 102.
[0073] See also Figure 3 In some embodiments, a second lubrication groove 71 is provided on a side of the wear-resistant plate 70 at the bottom of the slider close to the slider 50 , and the second lubrication groove 71 is used to be filled with lubricating liquid.
[0074] In this way, by filling the second lubrication groove 71 with lubricating liquid, the friction between the wear-resistant plate 70 at the bottom of the slider and the slider 50 can be reduced, thereby avoiding excessive friction between the slider 50 and the wear-resistant plate 70 at the bottom of the slider, which may cause damage to the slider 50 and is beneficial to the repeated operation of the injection molding mold 100.
[0075] It can be understood that the second lubrication groove 71 is circular in shape, and there are multiple second lubrication grooves 71 , which are evenly arranged on the wear-resistant plate 70 at the bottom of the slider.
[0076] See also Figure 2 In some embodiments, the wear-resistant plate 70 at the bottom of the slider is provided with avoidance holes 72 , which pass through opposite sides of the wear-resistant plate 70 at the bottom of the slider in a direction from the upper mold assembly 101 to the lower mold assembly 102 .
[0077] In this way, by setting the above-mentioned avoidance hole 72, the avoidance hole 72 can receive the toggle rod 20 extending out of the toggle hole 51 when the mold is closed, avoiding interference between the wear-resistant plate 70 at the bottom of the slider and the toggle rod 20 when the mold is closed, which is beneficial to the mold closing operation of the injection molding mold 100.
[0078] Please continue reading Figure 2 In some embodiments, the top of the support insert 43 is higher than the bottom of the slider 50, and the bottom of the support insert 43 is not higher than the bottom of the wear-resistant plate 70 at the bottom of the slider.
[0079] In this way, by setting the top of the support insert 43 higher than the bottom of the slider 50, the abutting portion 31 inserted into the abutting limiting groove 41 can correspond to the side of the side wall of the slider 50 close to the template body 42, keeping the side of the slider 50 close to the abutting member 30 completely abutted by the abutting inclined portion 32 of the abutting member 30, so that the abutting member 30 can stably push the slider 50. In addition, by setting the bottom of the support insert 43 not higher than the bottom of the slider bottom wear-resistant plate 70, the support insert 43 can stably abut the slider bottom wear-resistant plate 70 close to the support insert 43, so that the support insert 43 abuts the slider bottom wear-resistant plate 70 set in the template body 42, preventing the slider bottom wear-resistant plate 70 from shaking during the sliding process of the slider 50.
[0080] See also Figure 2 and Figure 3 In some embodiments, a support insert 43 is provided with an insert limiting groove 431 on a side away from the upper template 10 .
[0081] In this way, by opening an insert limiting groove 431 on one side of the support insert 43, the template body 42 can limit the installation position of the support insert 43 through the insert limiting groove 431, so that the abutting limiting groove 41 opened on the support insert 43 can accurately receive the abutting portion 31 when the mold is closed, to ensure that the support insert 43 stably supports the abutting portion 31 and the abutting member 30.
[0082] See also Figure 2 In some embodiments, the insert limiting groove 431 is a step groove, which is located at the connection position between the side of the support insert 43 away from the upper template 10 and the side of the support insert 43 away from the slider 50.
[0083] In this way, by setting the insert limiting groove 431 as a step groove, the contact area between the insert limiting groove 431 and the template body 42 can be increased, so that the template body 42 can provide a stable supporting force for the supporting insert 43, and then the template body 42 can stably support the supporting portion 31 through the supporting insert 43.
[0084] See also Figure 2 In some embodiments, the lower mold assembly 102 further includes a lower mold core 80, which is disposed on the lower mold plate 40. A bottom pressure plate 90 is disposed on the lower mold core 80. During the mold closing process, one side of the bottom pressure plate 90 abuts against the slider 50, and the other side of the bottom pressure plate 90 abuts against the workpiece to be injected in the product molding cavity.
[0085] In this way, by setting the lower mold core 80 and the bottom pressure plate 90, the bottom pressure plate 90 can be supported by the slider 50 to stably push the workpiece to be injected to the preset position of the template body 42, so that the molten plastic injected into the product molding cavity can be stably molded to the preset area of the workpiece to be injected.
[0086] See also Figure 2 In some embodiments, the upper mold assembly 101 is provided with a supporting connection groove 11 , and the supporting member 30 includes a supporting connection portion 33 , which is provided in the supporting connection groove 11 .
[0087] In this way, the supporting connection portion 33 is accommodated in the supporting connection groove 11, so that the supporting connection groove 11 limits the supporting connection portion 33, so that the supporting connection portion 33 is accurately installed to the predetermined position of the upper template 10, to ensure that the supporting portion 31 of the supporting member 30 is accurately inserted into the supporting limit groove 41 when the mold is closed.
[0088] See also Figure 3 In some embodiments, the support insert 43 includes an insert portion 432 and a locking portion 433. The insert portion 432 is disposed on the template body 42 and is provided with abutment and limiting grooves 41 and insert limiting grooves 431. One end of the locking portion 433 is passed through the insert portion 432 and is threadedly connected to the template body 42. The other end of the locking portion 433 abuts against the side of the insert portion 432 facing the upper template 10. For example, the locking portion 433 can be a screw.
[0089] In this way, the entry part 432 is locked to the template body 42 through the locking part 433, so that a split structure can be formed between the supporting entry 43 and the lower template 40, which is convenient for timely replacement of the entry part 432 according to usage requirements and damage of the entry part 432.
[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.
Claims
1. An injection molding mold, characterized in that, include: The upper mold assembly includes an upper mold plate, a toggle rod, and a supporting member; wherein one end of the toggle rod is connected to the upper mold plate; one end of the supporting member is connected to the upper mold plate, and the other end of the supporting member is provided with a supporting portion; The lower mold assembly includes a lower mold plate and a slider; wherein the slider is slidably arranged in the lower mold plate; a toggle hole is provided on the slider; a supporting limit groove is provided on the lower mold plate; the slider can slide toward the product molding cavity under the push of the supporting member during the mold closing process; the toggle rod can be inserted into the toggle hole during the mold closing process to limit the sliding stroke of the slider; the supporting portion can be inserted into the supporting limit groove during the mold closing process to limit the movement of the supporting member on the lower mold plate.
2. The injection molding die according to claim 1, wherein: The lower die assembly further comprises a push wear-resistant plate; wherein the push wear-resistant plate is arranged on a side of the sliding block close to the supporting member.
3. The injection molding die according to claim 2, wherein: The side of the supporting member close to the slider is provided with a resisting inclined portion; The push inclined portion can abut against the push wear-resistant plate during the mold closing process to push the slider to slide toward the product molding cavity; the side of the supporting portion close to the slider belongs to the push inclined portion.
4. The injection molding die according to claim 1, wherein: The lower template includes a template body and a supporting insert. The template body is arranged opposite to the upper template and is open and matched. The slider is slidably arranged in the template body. The supporting insert is arranged in the template body and is provided with the supporting limit groove.
5. The injection molding die according to claim 4, wherein: The lower die assembly further includes a wear-resistant plate at the bottom of the slider; the wear-resistant plate at the bottom of the slider is arranged below the slider in the template body; The side surfaces of the support insert close to the slider respectively abut against the slider and the wear-resistant plate at the bottom of the slider.
6. The injection molding die according to claim 5, wherein: The top of the support insert is higher than the bottom of the slider; the bottom of the support insert is not higher than the bottom of the wear-resistant plate at the bottom of the slider.
7. The injection molding die according to claim 4, wherein: A support insert limiting groove is provided on a side of the support insert away from the upper template.
8. The injection molding die according to claim 7, wherein: The insert limiting groove is a step groove, which is located at the connection position of the side of the supporting insert away from the upper template and the side of the supporting insert away from the slider.
9. The injection molding die according to claim 1, wherein: The lower mold assembly further includes a lower mold core; the lower mold core is arranged on the lower mold plate; the lower mold core is provided with a bottom pressing plate; Wherein, during the mold closing process, one side of the bottom pressing plate abuts against the slider, and the other opposite side of the bottom pressing plate abuts against the workpiece to be injected in the product molding cavity.
10. The injection molding die according to claim 1, wherein: The upper mold assembly is provided with a supporting connection groove; the supporting member includes a supporting connection portion, and the supporting connection portion is provided in the supporting connection groove.