Inner sliding block forming injection mold

Abstract

The utility model discloses an injection mold for forming an inner sliding block. The injection mold comprises a bottom plate, a rear mold assembly, a group of forming pieces and a front mold assembly, the rear mold assembly is arranged on the bottom plate; the rear mold assembly comprises a group of iron blocks, a base plate, a plate B, a rear mold and a group of inner sliding block mechanisms; the square iron is arranged on the bottom plate and located on the two sides of the bottom plate. The base plate is arranged on the square iron; the plate B is arranged on the base plate; the rear mold is arranged on the plate B, and an inner sliding block mechanism is arranged between the rear mold and the plate B; the forming piece is arranged above the rear mold; an inverted buckle is arranged at one end of the forming piece; the front mold assembly comprises a front mold, a plate A, a group of elastic block mechanisms and a top plate; the front mold is arranged above the forming piece; the plate A is arranged above the front mold; the plate A is connected with the front mold; a group of elastic block through holes are formed in the front mold; the elastic block mechanism penetrates through the elastic block through hole and is arranged between the plate A and the forming piece; and the top plate is arranged above the plate A. According to the inner sliding block molding injection mold, the inner sliding block mechanism ensures that the inverted buckle is separated before the molded part is completely demolded, and the elastic block mechanism prevents the molded part from being adhered to the front mold during mold opening.

Description

Technical Field

[0001] The utility model belongs to the field of molding and injection molding, and particularly relates to an inner slider molding injection mold. Background Art

[0002] With the global emphasis on clean energy and increased environmental awareness, the outlook for the new energy battery casing market is very optimistic. The battery casing is an important component of the battery and directly affects the battery's safety performance and lifespan. Therefore, the new energy battery casing market has huge development potential.

[0003] However, some new energy battery shell products have an undercut problem. When developing plastic molds, using the conventional inclined top method to develop the mold can easily cause the product to stick to the inclined top. At the same time, due to the structural characteristics and appearance requirements of this product, the clamping force of the front mold in the mold opening direction is much greater than that of the rear mold. This means that the product will stick to the front mold when the mold is opened, and the product appearance surface will have a stretching problem. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of the utility model is to provide an inner slider molding injection mold, which solves the undercut problem through the setting of the inner slider structure, and pushes the molded part toward the rear mold at the moment of mold opening through the spring block structure to avoid sticking to the front mold.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides an inner slider molding injection mold, comprising a base plate, a rear mold assembly, a group of molding parts and a front mold assembly; the rear mold assembly is arranged on the base plate; the rear mold assembly comprises a group of square irons, a pad, a B plate, a rear mold and a group of inner slider mechanisms; the square irons are arranged on the base plate and are located on both sides of the base plate; the pad is arranged on the square irons; the B plate is arranged on the pad; the rear mold is arranged on the B plate, and an inner slider mechanism is arranged between the two; The molding part is arranged above the rear mold; an undercut is provided at one end of the molding part; the front mold assembly includes a front mold, an A-plate, a group of spring block mechanisms and a top plate; the front mold is arranged above the molding part; the A-plate is arranged above the front mold; the A-plate is connected to the front mold; a group of spring block through holes are provided on the front mold; the spring block mechanism passes through the spring block through holes and is arranged between the A-plate and the molding part; the top plate is arranged above the A-plate; the inner slider mechanism is used to disengage the undercut before the molding part is completely demolded; the spring block mechanism is used to prevent the molding part from sticking to the front mold when the mold is opened.

[0006] Furthermore, the inner slider mechanism includes an inner slider guide block, a guide block connecting block, an inner slider, a set of pressure strips, and a wear plate. The inner slider guide block is mounted on a backing plate and connected to the backing plate via a guide block connecting block. Pressure strips are provided on both sides of the inner slider. The inner slider is mounted on plate B and connected to plate B via pressure strips. The inner slider is slidably connected to the inner slider guide block. The wear plate is mounted at the lower end of the inner slider. The undercut is located on the side of the inner slider away from the inner slider guide block. The inner slider is slidably connected to the inner slider guide block, ensuring that the inner slider can move along the inner slider guide block and that the undercut is released before the molded part is completely demolded.

[0007] Furthermore, the spring mechanism includes a front mold spring and a spring; the front mold spring is located within the front mold, with its lower end abutting the upper surface of the molded part; and the spring is located on the lower surface of plate A, with its lower end abutting the upper end of the front mold spring. The spring mechanism pushes the molded part toward the rear mold at the moment of mold opening to prevent it from sticking to the front mold.

[0008] Furthermore, a limiting protrusion is provided on the upper end of the front mold spring block; a limiting platform is provided on the side wall of the spring block through hole; the limiting protrusion and the limiting platform cooperate to limit the front mold spring block. The spring block through hole cooperates with the limiting protrusion to ensure that the front mold spring block can cooperate with the spring to create a certain expansion and contraction space.

[0009] Furthermore, the rear mold assembly also includes an ejector mechanism and several limiting bolts. The ejector mechanism is located on the bottom plate and between the square irons. The limiting bolts are located on the backing plate and pass through the B plate. When the B plate is lifted upward, it is limited by the limiting bolts, providing support for the subsequent ejector plate to eject the molded part.

[0010] Furthermore, the ejector mechanism includes a set of ejector plates and a plurality of ejector pins; the set of ejector plates is stacked on the bottom plate; the ejector pins are mounted on the ejector plates; the ejector pins pass through the backing plate, plate B, and rear mold in sequence, with their upper ends contacting the lower surface of the molded part. The ejector plate is used to eject the molded part and complete demolding.

[0011] Furthermore, a driving mechanism is provided between the ejector plate and plate B; the driving mechanism includes a driving mechanism connecting block, a limiting center column, a group of driving columns, and a group of limiting blocks; the driving mechanism connecting block is provided on the backing plate; the limiting center column is provided on the bottom plate and sequentially passes through the ejector plate, the backing plate, and the driving mechanism connecting block; the driving columns are provided on both sides of the limiting center column; the driving columns are provided on the ejector plate and sequentially pass through the backing plate and the driving mechanism connecting block; the limiting block is provided between the limiting center column and the driving columns and is located within the driving mechanism connecting block. The driving mechanism ensures that the ejector plate can drive plate B upward. At the same time, after moving upward for a certain distance, plate B is limited by the limiting bolts. At this time, the ejector plate can still continue to move upward to eject the molded part.

[0012] Furthermore, the driving mechanism connecting block is provided with a plurality of transverse guide holes; the limiting block is provided with a set of transverse limit posts, which are disposed in the transverse guide holes. The limit block moves left and right within the transverse guide holes of the driving mechanism connecting block via the limit posts, thereby ensuring that plate B is driven upward by the ejector plate, and that the ejector plate can continue to move upward to eject the molded part even after plate B is restrained by the limit bolts.

[0013] Furthermore, both sides of the backing plate and the B plate are provided with snap-fit ​​machines, which ensure that the B plate and the backing plate are closed during the molding and injection molding process.

[0014] Furthermore, heat insulation plates are provided below the bottom plate and above the top plate to reduce heat transfer between the mold and the injection molding machine during the molding process, thereby maintaining a stable mold temperature.

[0015] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0016] 1. The utility model provides an inner slider molding injection mold. By setting an inner slider mechanism, the undercut is disengaged before the molded part is ejected, thereby reducing the probability of damage to the molded part due to undercut;

[0017] 2. The utility model is an injection mold for forming an inner slider. By setting a spring block mechanism, the molded part is pushed toward the rear mold at the moment of mold opening to avoid sticking to the front mold.

[0018] 3. The utility model provides an inner slider molding injection mold, which improves work efficiency and quality and improves the qualified rate of molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of an inner slider molding injection mold according to the present utility model;

[0020] Figure 2 This is a cross-sectional view of an inner slider molding injection mold according to the present invention;

[0021] Figure 3 This is a structural schematic diagram of an inner slider mechanism in an inner slider molding injection mold according to the present invention;

[0022] Figure 4 This is a structural schematic diagram of a molded part in an injection mold for forming an inner slider according to the present invention;

[0023] Figure 5 This is an enlarged structural diagram of the bullet block mechanism in an inner slider molding injection mold described in the present utility model;

[0024] Figure 6This is a schematic diagram of a limiting bolt in an inner slider molding injection mold according to the present invention;

[0025] Figure 7 This is a structural schematic diagram of a driving mechanism in an inner slider molding injection mold according to the present utility model;

[0026] Figure 8 This is an enlarged schematic diagram of a driving mechanism in an inner slider molding injection mold according to the present invention;

[0027] Figure 9 This is an enlarged schematic diagram of the driving mechanism in the inner slider molding injection mold described in the present utility model (the driving mechanism connecting block is hidden);

[0028] Figure 10 This is a schematic diagram of the mold opening of the front mold component of the inner slider molding injection mold described in the utility model;

[0029] Figure 11 This is a schematic diagram of the B plate ejection state of an inner slider molding injection mold described in the present invention:

[0030] Figure 12 This is an enlarged schematic diagram of the inner slider mechanism of the inner slider molding injection mold of the present invention with the B plate ejected;

[0031] Figure 13 This is a schematic diagram of the ejection state of a molded part of an inner slider molding injection mold according to the present invention;

[0032] In the picture:

[0033] 1- bottom plate;

[0034] 2-rear mold assembly; 21-square iron; 22-pad; 23-B plate; 24-rear mold; 25-inner slider mechanism; 26-throw pin mechanism; 27-limit bolt;

[0035] 251-inner slider guide block; 252-guide block connecting block; 253-inner slider; 254-pressing strip; 255-wear-resistant plate; 261-thimble plate; 262-thimble;

[0036] 3-molded part; 31-undercut;

[0037] 4-front mold assembly; 41-front mold; 42-A plate; 43-spring block mechanism; 44-top plate;

[0038] 411-spring block through hole; 431-front mold spring block; 432-spring; 4111-limiting platform; 4311-limiting protrusion;

[0039] 5-driving mechanism; 51-driving mechanism connecting block; 52-limiting center column; 53-driving column; 54-limiting block;

[0040] 511- transverse guide through hole; 541- transverse limiting column;

[0041] 6-button machine;

[0042] 7- Heat insulation board. DETAILED DESCRIPTION

[0043] The following describes in detail embodiments of the present invention, examples of which 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0044] Example 1

[0045] In this embodiment, Figure 1 、 Figure 2 Figure 4 and Figure 5 , the utility model discloses an inner slider molding injection mold, comprising a base plate 1, a rear mold assembly 2, a group of molding parts 3 and a front mold assembly 4;

[0046] The rear mold assembly 2 is arranged on the bottom plate 1; the rear mold assembly 2 includes a set of square irons 21, a backing plate 22, a B plate 23, a rear mold 24 and a set of inner slider mechanisms 25; the square irons 21 are arranged on the bottom plate 1 and are located on both sides of the bottom plate 1; the backing plate 22 is arranged on the square irons 21; the B plate 23 is arranged on the backing plate 22; the rear mold 24 is arranged on the B plate 23, and the inner slider mechanism 25 is arranged between the two; The molding part 3 is arranged above the rear mold 24; an undercut 31 is provided at one end of the molding part 3; the front mold assembly 4 includes a front mold 41, an A plate 42, a group of spring block mechanisms 43 and a top plate 44; the front mold 41 is arranged above the molding part 3; the A plate 42 is arranged above the front mold 41; the A plate 42 is connected to the front mold 41; a group of spring block through holes 411 are provided on the front mold 41; the spring block mechanism 43 passes through the spring block through holes 411 and is arranged between the A plate 42 and the molding part 3; the top plate 44 is arranged above the A plate 42; the inner slider mechanism 25 is used to disengage the undercut 31 before the molding part 3 is completely demolded; the spring block mechanism 43 is used to prevent the molding part 3 from sticking to the front mold 41 when the mold is opened.

[0047] Example 2

[0048] On the basis of Example 1, in this embodiment, as Figure 2 and Figure 3The utility model discloses an inner slider molding injection mold, the inner slider mechanism 25 includes an inner slider guide block 251, a guide block connecting block 252, an inner slider 253, a group of pressure strips 254 and a wear-resistant plate 255; the inner slider guide block 251 is arranged on the pad 22 and is connected to the pad 22 through the guide block connecting block 252; pressure strips 254 are provided on both sides of the inner slider 253; the inner slider 253 is arranged on the B plate 23 and is connected to the B plate 23 through the pressure strips 254; the inner slider 253 is slidably connected to the inner slider guide block 251; the wear-resistant plate 255 is arranged at the lower end of the inner slider 253; the undercut 31 is arranged on the side of the inner slider 253 away from the inner slider guide block 251.

[0049] Specifically, the angle of the sliding connection between the inner slider 253 and the guide block connecting block 252 can be adjusted according to the direction of the undercut 31 of the molded part 3; the length of the sliding connection between the inner slider 253 and the guide block connecting block 252 can be adjusted according to the length of the undercut 31 of the molded part 3.

[0050] In particular, a water channel may be added to the slider guide block 252 to improve the cooling cycle of the molded part 3 and to address the dimensional instability problem caused by the warping of the molded part 3 .

[0051] In this embodiment, if Figure 2 and Figure 5 The spring block mechanism 43 includes a front mold spring block 431 and a spring 432; the front mold spring block 431 is arranged in the front mold 41, and the lower end is against the upper surface of the molded part 3; the spring 432 is arranged on the lower surface of the A plate 42, and the lower end is against the upper end of the front mold spring block 431.

[0052] In this embodiment, if Figure 2 and Figure 5 The upper end of the front mold spring block 431 is provided with a limiting protrusion 4311; the side wall of the spring block through hole 411 is provided with a limiting platform 4111; the limiting protrusion 4311 and the limiting platform 4111 cooperate to limit the front mold spring block 431.

[0053] In particular, the radius of the lower end of the spring block through hole 411 is slightly larger than the radius of the lower end of the front mold spring block 431 , ensuring that the front mold spring block 431 can move up and down in the spring block through hole 411 .

[0054] In this embodiment, if Figure 2 and Figure 6 The rear mold assembly 2 also includes a pin mechanism 26 and a plurality of limiting bolts 27; the pin mechanism 26 is provided on the bottom plate 1 and is located between the square irons 21; the limiting bolts 27 are provided on the pad 22 and pass through the B plate 23; the B plate 23 is limited by the limiting bolts 27 when it is lifted upward.

[0055] Specifically, the ejector mechanism 26 can adopt various ejection forms according to the shape and requirements of the molded part 3, such as round ejector ejection, ejector ejection with support, flat ejector ejection, etc.

[0056] In this embodiment, if Figure 2 and Figure 6 The ejector mechanism 26 includes a group of ejector plates 261 and a plurality of ejector pins 262; the group of ejector plates 261 are stacked on the base plate 1; the ejector pins 262 are arranged on the ejector plates 261; the ejector pins 262 pass through the pad 22, the B plate 23 and the rear mold 24 in sequence, and the upper ends are pressed against the lower surface of the molded part 3.

[0057] In particular, it is preferred to select ejector pins 262 with a larger diameter to protect the surface of the molded part 3 .

[0058] In this embodiment, if Figure 7 A group of driving mechanisms 5 is provided between the ejector plate 261 and the B plate 23; the driving mechanism 5 includes a driving mechanism connecting block 51, a limiting middle column 52, a group of driving columns 53, and a group of limiting blocks 54; the driving mechanism connecting block 51 is provided on the pad 22; the limiting middle column 52 is provided on the bottom plate 1, and passes through the ejector plate 261, the pad 22 and the driving mechanism connecting block 51 in sequence; the driving columns 53 are provided on both sides of the limiting middle column 52; the driving columns 53 are provided on the ejector plate 261, and pass through the pad 22 and the driving mechanism connecting block 51 in sequence; the limiting block 54 is provided between the limiting middle column 52 and the driving column 53, and is located in the driving mechanism connecting block 51.

[0059] In this embodiment, if Figure 7 、 Figure 8 and Figure 9 The driving mechanism connecting block 51 is provided with a plurality of transverse guide through holes 511 ; the limiting block 54 is provided with a group of transverse limiting columns 541 ; the transverse limiting columns 541 are arranged in the transverse guide through holes 511 .

[0060] In this embodiment, if Figure 1 , buckle machines 6 are respectively provided on both sides of the pad 22 and the B plate 23.

[0061] In particular, the opening and closing accuracy of the button machine 6 needs to be guaranteed. When the front mold 41 is opened, the button machine 6 needs to be opened synchronously.

[0062] In this embodiment, if Figure 1 A heat insulation plate 7 is provided below the bottom plate 1 and above the top plate 44 .

[0063] Specifically, the size and shape of the heat insulation board 7 should be determined according to the size and shape of the bottom plate 1 and the top plate 44 to ensure that the heat insulation board 7 can completely cover the space between the two plates.

[0064] In particular, the thickness of the heat insulation board 7 can be selected according to the required heat insulation effect and mechanical strength, and the thickness is usually in the range of 1.0 mm to 50 mm.

[0065] The working principle of the above embodiment is:

[0066] The utility model discloses an inner slider molding injection mold. At the moment when the front mold 41 is opened, the front mold spring block 431 on the front mold 41 moves toward the rear mold 24 under the action of the spring 432, pressing the molded part 3 onto the rear mold 24;

[0067] like Figure 10 After the front mold 41 is opened, the buckle machine 6 is fully opened, and the ejector plate 261 starts to move upward, driving the column 53 to push against the side of the limit block 54 and drive the B plate 23 to move upward;

[0068] like Figure 6 、 Figure 7 、 Figure 8 and Figure 9 After the ejector plate 261 moves up a distance, the limit block 54 moves to the top of the limit center column 52. Driven by the driving column 53, the limit block 54 moves toward the limit center column 52 and closes. At this time, the B plate 23 is limited by the limit bolt 27. At the same time, a part of the limit block 54 moves to the top of the limit center column 52 to ensure that the B plate 23 does not fall. At the same time, Figure 11 and Figure 12 , the inner slider 253 slides along the inner slider guide block 251 under the drive of the B plate 23, completing the separation of the undercut 31 of the molded part 3;

[0069] Finally, if Figure 13 , the ejector plate 261 continues to move upward, driving the ejector 262 to eject the molded part 3, completing the demoulding.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. An inner slider molding injection mold, characterized by: include: A bottom plate (1), a rear mold assembly (2), wherein the rear mold assembly (2) is arranged on the bottom plate (1); the rear mold assembly (2) comprises a set of square irons (21), a backing plate (22), a B plate (23), a rear mold (24), and a set of inner slider mechanisms (25); the square irons (21) are arranged on the bottom plate (1) and are located on both sides of the bottom plate (1); the backing plate (22) is arranged on the square irons (21); the B plate (23) is arranged on the backing plate (22); the rear mold (24) is arranged on the B plate (23), and an inner slider mechanism (25) is arranged between the two; A group of molding parts (3), wherein the molding parts (3) are arranged above the rear mold (24); one end of the molding parts (3) is provided with an undercut (31); A front mold assembly (4), the front mold assembly (4) comprising a front mold (41), an A-plate (42), a group of spring block mechanisms (43) and a top plate (44); the front mold (41) is arranged above the molded part (3); the A-plate (42) is arranged above the front mold (41); the A-plate (42) is connected to the front mold (41); a group of spring block through holes (411) are provided on the front mold (41); the spring block mechanisms (43) pass through the spring block through holes (411) and are arranged between the A-plate (42) and the molded part (3); the top plate (44) is arranged above the A-plate (42); The inner slider mechanism (25) is used to disengage the undercut (31) before the molded part (3) is completely demoulded; the spring block mechanism (43) is used to prevent the molded part (3) from adhering to the front mold (41) when the mold is opened.

2. The inner slider molding injection mold according to claim 1, characterized in that: The inner slider mechanism (25) includes an inner slider guide block (251), a guide block connecting block (252), an inner slider (253), a group of pressure strips (254) and a wear-resistant plate (255); The inner slider guide block (251) is provided on the backing plate (22) and is connected to the backing plate (22) through the guide block connecting block (252); pressure strips (254) are provided on both sides of the inner slider (253); the inner slider (253) is provided on the B plate (23) and is connected to the B plate (23) through the pressure strips (254); the inner slider (253) is slidably connected to the inner slider guide block (251); the wear-resistant plate (255) is provided at the lower end of the inner slider (253); and the undercut (31) is provided on a side of the inner slider (253) away from the inner slider guide block (251).

3. The inner slider molding injection mold according to claim 1, characterized in that: The spring block mechanism (43) includes a front mold spring block (431) and a spring (432); The front mold spring block (431) is arranged in the front mold (41), and the lower end thereof abuts against the upper surface of the molded part (3); the spring (432) is arranged on the lower surface of the A plate (42), and the lower end thereof abuts against the upper end of the front mold spring block (431).

4. The inner slider molding injection mold according to claim 3, characterized in that: A limiting protrusion (4311) is provided at the upper end of the front mold spring block (431); a limiting platform (4111) is provided on the side wall of the spring block through hole (411); the limiting protrusion (4311) cooperates with the limiting platform (4111) to limit the front mold spring block (431).

5. The inner slider molding injection mold according to claim 1, characterized in that: The rear mold assembly (2) further includes an ejector pin mechanism (26) and a plurality of limiting bolts (27); The ejector mechanism (26) is provided on the bottom plate (1) and is located between the square irons (21); the limiting bolt (27) is provided on the backing plate (22) and passes through the B plate (23); and the B plate (23) is limited by the limiting bolt (27) when it is lifted upward.

6. The inner slider molding injection mold according to claim 5, characterized in that: The ejector mechanism (26) includes a set of ejector plates (261) and a plurality of ejector pins (262); The group of ejector plates (261) are stacked on the bottom plate (1); the ejector pins (262) are arranged on the ejector plates (261); the ejector pins (262) pass through the backing plate (22), the B plate (23) and the rear mold (24) in sequence, and the upper ends thereof are pressed against the lower surface of the molded part (3).

7. The inner slider molding injection mold according to claim 6, characterized in that: A driving mechanism (5) is provided between the ejector plate (261) and the B plate (23); the driving mechanism (5) comprises a driving mechanism connecting block (51), a limiting center column (52), a group of driving columns (53), and a group of limiting blocks (54); The driving mechanism connecting block (51) is provided on the backing plate (22); the limiting middle column (52) is provided on the bottom plate (1) and sequentially passes through the ejector plate (261), the backing plate (22) and the driving mechanism connecting block (51); the driving column (53) is provided on both sides of the limiting middle column (52); the driving column (53) is provided on the ejector plate (261) and sequentially passes through the backing plate (22) and the driving mechanism connecting block (51); the limiting block (54) is provided between the limiting middle column (52) and the driving column (53) and is located in the driving mechanism connecting block (51).

8. The inner slider molding injection mold according to claim 7, characterized in that: The driving mechanism connecting block (51) is provided with a plurality of transverse guide through holes (511); the limiting block (54) is provided with a group of transverse limiting columns (541); and the transverse limiting columns (541) are arranged in the transverse guide through holes (511).

9. The inner slider molding injection mold according to claim 1, characterized in that: The backing plate (22) and the B plate (23) are respectively provided with buckle machines (6) on both sides.

10. The inner slider molding injection mold according to claim 1, characterized in that: Heat insulation plates (7) are provided below the bottom plate (1) and above the top plate (44).

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