Penched roof spring ejection mechanism of tray mold

Abstract

The utility model belongs to the technical field of dies, and relates to a tray die pitched roof spring ejection mechanism. The tray forming mold comprises a forming mold plate, and a tray forming surface is arranged in the forming mold plate. In the injection molding process, the tray molding surface is used for assisting in molding a tray plastic part, the mold is opened after injection molding, the molding mold plate is moved away from one end of the plastic part, and at the moment, the synchronous reverse pulling structure can synchronously pull the side inclined ejector block to move together with the molding mold plate, so that reverse pulling is realized, and enough mold opening space is formed; at the moment, the synchronous reverse pulling structure is rotated towards one end far away from the convex part, so that the synchronous reverse pulling structure is separated from the convex part, the side part inclined ejection block can perform inclined ejection demolding, and the side part and the end part of the plastic part are subjected to inclined ejection demolding in cooperation with the end part inclined ejection block, so that on one hand, enough space can be ensured during ejection demolding; on the other hand, position deviation of the ejection structure during demolding can be avoided, and the demolding accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an inclined ejector spring ejection mechanism for a tray mold. Background Art

[0002] A tray is a very widely used plastic product for people to carry items in daily life and products in factories, and the tray is mainly injection-molded by a tray injection mold. After injection molding, the existing tray mold needs to be ejected and demolded. When ejecting, it is difficult to ensure sufficient demolding space after the ejection structure moves with the mold opening, and position deviation is likely to occur, and the demolding accuracy is relatively general. Therefore, there is an urgent need to design an inclined ejector spring ejection mechanism for a tray mold that can overcome the above defects.

[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a fast food restaurant tray mold [Application No.: 201410151124.X], which adopts an injection mold method, and the gating system adopts a hot runner system. The fast food restaurant tray mold includes an upper template and a lower template. The lower template is provided with 4 cavities, and the cavities are in a cross-shaped cavity. Two circular cavities and two oval cavities are arranged in the cross-shaped cavity. Summary of the Invention

[0004] The purpose of the utility model is to provide an inclined ejector spring ejection mechanism for a tray mold in view of the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An inclined ejector spring ejection mechanism for a tray mold includes a forming template. A tray forming surface is arranged in the forming template. A plurality of end inclined ejector blocks and a plurality of side inclined ejector blocks are arranged on the forming template. The end inclined ejector blocks and the side inclined ejector blocks are arranged alternately. The extension lines of the end inclined ejector blocks and the side inclined ejector blocks intersect with the projection surface of the tray forming surface. A sliding plate is arranged below the forming template. A synchronous reverse pulling structure is arranged on the side of the forming template. A protruding portion is arranged on the outer wall surface of the side inclined ejector block. One end of the synchronous reverse pulling structure is in abutting and cooperating connection with the protruding portion, and the other end is in rotational cooperation with the sliding plate.

[0007] In the above-mentioned inclined ejector spring ejection mechanism for a tray mold, the synchronous reverse pulling structure includes a reverse pulling rod arranged on the side of the forming template. A clamping portion is arranged at the head of the reverse pulling rod. The clamping portion is in abutting and cooperating connection with the protruding portion.

[0008] In the above-mentioned inclined ejector spring ejection mechanism for a tray mold, the tail of the reverse pulling rod is connected to the sliding plate through a tail connecting piece, and the tail of the reverse pulling rod is in rotational cooperation with the tail connecting piece.

[0009] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, a pull rod limiting member is further provided on the side of the forming template, and the middle part of the inverted pull rod is slidably matched with the pull rod limiting member.

[0010] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, the protruding portion includes a clamping convex block and an embedded block arranged in the side inclined ejector block. A clamping space is formed between the clamping convex block and the embedded block, and the clamping portion is in abutting fit with the clamping convex block.

[0011] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, the tail connecting member includes a plurality of connecting seats arranged on the sliding plate, and the connecting seats and the tail of the inverted pull rod are rotationally matched through a rotating shaft.

[0012] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, the pull rod limiting member includes a plurality of limiting clamping plates arranged on the side of the forming template. A limiting sliding groove is arranged in the limiting clamping plate, and a shaft sliding sleeve extending into the limiting sliding groove is arranged in the middle of the inverted pull rod. The shaft sliding sleeve is slidably matched with the limiting sliding groove.

[0013] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, an anti-detachment clamping block staggered with the shaft sliding sleeve is further arranged in the middle of the inverted pull rod, and the anti-detachment clamping block is slidably matched with the limiting sliding groove.

[0014] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, two end limiting strips symmetrical about the center line of the end inclined ejector block are arranged on the end inclined ejector block.

[0015] In the ejector mechanism of the inclined ejector spring of the above-mentioned tray mold, two side limiting strips symmetrical about the center line of the side inclined ejector block are arranged on the side inclined ejector block.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows:

[0017] 1. During the injection molding process of the present utility model, the tray forming surface is used to assist in forming the tray plastic part. After injection molding and mold opening, the forming template is moved away from the end of the plastic part. At this time, the synchronous inverted pulling structure will synchronously pull the side inclined ejector block and the forming template to move together to achieve inverted pulling. After forming enough mold opening space, at this time, the synchronous inverted pulling structure is rotated away from the protruding portion, so that the synchronous inverted pulling structure is separated from the protruding portion, and the side inclined ejector block can perform inclined ejector demolding. Cooperating with the end inclined ejector block, the side and end of the plastic part are inclined ejector demolded. On the one hand, it can ensure that there is enough space during ejection demolding, and on the other hand, it can avoid the position deviation of the ejection structure during demolding and improve the accuracy of demolding.

[0018] 2. During the rotation of the inverted pull rod of the present utility model, the shaft sliding sleeve in the middle of the inverted pull rod slides along the limiting sliding groove, so that the middle part of the inverted pull rod is displaced along the defined track, and the anti-detachment clamping block can prevent the inverted pull rod from detaching from the limiting sliding groove.

[0019] Other advantages, objectives and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the present utility model.

[0021] Figure 2 is a schematic partial structural view of the present utility model.

[0022] Figure 3 is a schematic partial structural view of the present utility model in another direction.

[0023] Figure 4 is a schematic structural view of the synchronous reverse pulling structure.

[0024] In the figure: forming template 1, tray forming surface 2, end inclined ejector block 3, side inclined ejector block 4, sliding plate 5, synchronous reverse pulling structure 6, convex portion 7, reverse pull rod 8, snap portion 9, tail connecting member 10, pull rod limiting member 11, clamping convex block 12, embedded block 13, connecting seat 14, limiting clamping plate 15, limiting sliding groove 16, shaft sliding sleeve 17, anti - detachment snap block 18, end limiting strip 19, side limiting strip 20. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below with reference to the accompanying drawings.

[0026] As Figures 1-4 shown, a tray mold inclined ejector spring ejection mechanism includes a forming template 1. A tray forming surface 2 is provided inside the forming template 1. A plurality of end inclined ejector blocks 3 and a plurality of side inclined ejector blocks 4 are provided on the forming template 1. The end inclined ejector blocks 3 and the side inclined ejector blocks 4 are arranged alternately. The extension lines of the end inclined ejector blocks 3 and the side inclined ejector blocks 4 intersect with the projection surface of the tray forming surface 2. A sliding plate 5 is provided below the forming template 1. A synchronous reverse pulling structure 6 is provided on the side of the forming template 1. A convex portion 7 is provided on the outer wall surface of the side inclined ejector block 4. One end of the synchronous reverse pulling structure 6 is in abutting and cooperating connection with the convex portion 7, and the other end is in rotational cooperation with the sliding plate 5.

[0027] In this embodiment, during the injection molding process, the tray forming surface 2 is used to assist in forming the tray plastic part. After injection molding and mold opening, the forming template 1 is moved away from the end of the plastic part. At this time, the synchronous reverse pulling structure 6 will synchronously pull the side inclined ejector block 4 to move together with the forming template 1 to achieve reverse pulling. After forming enough mold opening space, the synchronous reverse pulling structure 6 is rotated away from the protruding part 7 at this time, so that the synchronous reverse pulling structure 6 is disengaged from the protruding part 7, enabling the side inclined ejector block 4 to perform inclined ejection demolding. Cooperating with the end inclined ejector block 3, the side and end of the plastic part are subjected to inclined ejection demolding. On the one hand, it can ensure that there is enough space during ejection demolding, and on the other hand, it can avoid the position deviation of the ejection structure during demolding, improving the accuracy of demolding.

[0028] Combined with Figures 1-4 As shown, the synchronous reverse pulling structure 6 includes a reverse pull rod 8 provided on the side of the forming template 1. The head of the reverse pull rod 8 is provided with a buckle part 9, and the buckle part 9 is in abutting cooperation with the protruding part 7.

[0029] Specifically, after injection molding and mold opening, the forming template 1 is moved away from the end of the plastic part. At this time, due to the abutting cooperation between the reverse pull rod 8 and the protruding part 7 through the buckle part 9, the side inclined ejector block 4 will be synchronously pulled to move together with the forming template 1 to achieve reverse pulling. After forming enough mold opening space, the synchronous reverse pulling structure 6 is rotated away from the protruding part 7 at this time, so that the synchronous reverse pulling structure 6 is disengaged from the protruding part 7, enabling the side inclined ejector block 4 to perform inclined ejection demolding. Cooperating with the end inclined ejector block 3, the side and end of the plastic part are subjected to inclined ejection demolding. On the one hand, it can ensure that there is enough space during ejection demolding, and on the other hand, it can avoid the position deviation of the ejection structure during demolding, improving the accuracy of demolding.

[0030] Combined with Figure 1 、 Figure 4 As shown, the tail of the reverse pull rod 8 is connected to the sliding plate 5 through a tail connecting piece 10, and the tail of the reverse pull rod 8 is rotationally matched with the tail connecting piece 10.

[0031] In this embodiment, the tail of the reverse pull rod 8 is connected to the sliding plate 5 through the tail connecting piece 10, which is convenient for rotating the reverse pull rod 8 for angle adjustment.

[0032] A pull rod limiting piece 11 is further provided on the side of the forming template 1, and the middle part of the reverse pull rod 8 is slidably matched with the pull rod limiting piece 11.

[0033] In this embodiment, the pull rod limiting piece 11 is used to limit the middle part of the reverse pull rod 8 to ensure that the middle part of the reverse pull rod 8 is displaced within a limited range.

[0034] Combined with Figure 2 、 Figure 4As shown, the protruding portion 7 includes a clamping convex block 12 and an embedded block 13 arranged in the side inclined ejector block 4. A clamping space is formed between the clamping convex block 12 and the embedded block 13, and the clamping portion 9 is in abutting fit with the clamping convex block 12.

[0035] In this embodiment, during the demolding process, the clamping portion 9 is in abutting fit with the clamping convex block 12, which will synchronously pull the side inclined ejector block 4 and the forming template 1 to move together to achieve reverse pulling and form sufficient mold opening space.

[0036] The tail connecting member 10 includes a plurality of connecting seats 14 arranged on the sliding plate 5, and the connecting seats 14 and the tail of the reverse pull rod 8 are rotatably matched through a rotating shaft.

[0037] In this embodiment, the connecting seats 14 and the tail of the reverse pull rod 8 are rotatably matched through a rotating shaft, which is convenient for rotating the tail of the reverse pull rod 8 to adjust the angle.

[0038] The pull rod limiting member 11 includes a plurality of limiting clamping plates 15 arranged on the side of the forming template 1. A limiting sliding groove 16 is arranged in the limiting clamping plate 15. An axial sliding sleeve 17 extending into the limiting sliding groove 16 is arranged in the middle of the reverse pull rod 8. The axial sliding sleeve 17 is in sliding fit with the limiting sliding groove 16. An anti-detachment clamping block 18 staggered with the axial sliding sleeve 17 is also arranged in the middle of the reverse pull rod 8. The anti-detachment clamping block 18 is in sliding fit with the limiting sliding groove 16.

[0039] In this embodiment, during the rotation of the reverse pull rod 8, the axial sliding sleeve 17 in the middle of the reverse pull rod 8 slides along the limiting sliding groove 16, so that the middle part of the reverse pull rod 8 displaces along a defined track, and the anti-detachment clamping block 18 can prevent the reverse pull rod 8 from detaching from the limiting sliding groove 16.

[0040] Combined Figure 1 As shown, two end limiting strips 19 symmetrically arranged along the center line of the end inclined ejector block 3 are arranged on the end inclined ejector block 3.

[0041] In this embodiment, the end limiting strip 19 can limit the end inclined ejector block 3.

[0042] Combined Figure 1 As shown, two side limiting strips 20 symmetrically arranged along the center line of the side inclined ejector block 4 are arranged on the side inclined ejector block 4.

[0043] In this embodiment, the side limiting strip 20 can limit the side inclined ejector block 4.

[0044] The working principle of the present utility model is:

[0045] During the injection molding process, the tray forming surface 2 is used to assist in forming the tray plastic part. After injection molding and mold opening, the forming template 1 is moved away from the end of the plastic part. At this time, due to the abutting cooperation between the inverted pull rod 8 and the convex part 7 through the buckle part 9, the side inclined ejector block 4 will be synchronously pulled to move together with the forming template 1 to achieve inverted pulling. After forming enough mold opening space, the synchronous inverted pulling structure 6 is rotated away from the convex part 7, so that the synchronous inverted pulling structure 6 is disengaged from the convex part 7, enabling the side inclined ejector block 4 to perform inclined ejection demolding. Cooperating with the end inclined ejector block 3, the side and end parts of the plastic part are subjected to inclined ejection demolding. On the one hand, it can ensure that there is enough space during ejection demolding, and on the other hand, it can avoid the position deviation of the ejection structure during demolding, improving the accuracy of demolding.

[0046] During the demolding process, the buckle part 9 abuts and cooperates with the clamping convex block 12, and will synchronously pull the side inclined ejector block 4 to move together with the forming template 1 to achieve inverted pulling and form enough mold opening space.

[0047] The connecting seat 14 and the tail of the inverted pull rod 8 are rotationally matched through a rotating shaft, which facilitates rotating the tail of the inverted pull rod 8 for angle adjustment.

[0048] During the rotation of the inverted pull rod 8, the shaft sliding sleeve 17 in the middle of the inverted pull rod 8 slides along the limit sliding groove 16, so that the middle part of the inverted pull rod 8 is displaced along a defined track. The anti-disengagement block 18 can prevent the inverted pull rod 8 from disengaging from the limit sliding groove 16, and the end limit strip 19 can limit the end inclined ejector block 3, and the side limit strip 20 can limit the side inclined ejector block 4.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention.

[0050] Although terms such as forming template 1, tray forming surface 2, end inclined ejector block 3, side inclined ejector block 4, sliding plate 5, synchronous inverted pulling structure 6, convex part 7, inverted pull rod 8, buckle part 9, tail connecting part 10, pull rod limiting part 11, clamping convex block 12, embedded block 13, connecting seat 14, limit clamping plate 15, limit sliding groove 16, shaft sliding sleeve 17, anti-disengagement block 18, end limit strip 19, and side limit strip 20 are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. An ejector mechanism for a lifter spring of a pallet mold, comprising a forming template (1), characterized in that, The forming template (1) is provided with a tray forming surface (2) therein. The forming template (1) is provided with a plurality of end lifters (3) and a plurality of side lifters (4). The end lifters (3) and the side lifters (4) are arranged alternately. The extension lines of the end lifters (3) and the side lifters (4) intersect with the projection surface of the tray forming surface (2). A sliding plate (5) is arranged below the forming template (1). A synchronous reverse pulling structure (6) is arranged on the side of the forming template (1). A convex portion (7) is arranged on the outer wall surface of the side lifter (4). One end of the synchronous reverse pulling structure (6) is in abutting and cooperating connection with the convex portion (7), and the other end is in rotational cooperation with the sliding plate (5).

2. The ejector mechanism of the inclined ejector spring of the tray mold according to claim 1, wherein, The synchronous reverse pulling structure (6) includes a reverse pulling rod (8) arranged on the side of the forming template (1). A clamping portion (9) is arranged at the head of the reverse pulling rod (8). The clamping portion (9) is in abutting and cooperating connection with the convex portion (7).

3. The lifter spring ejection mechanism of the tray mold according to claim 2, characterized in that, The tail of the reverse pulling rod (8) is connected to the sliding plate (5) through a tail connecting member (10). The tail of the reverse pulling rod (8) is in rotational cooperation with the tail connecting member (10).

4. The ejector mechanism of the inclined ejector spring for the tray mold according to claim 3, characterized in that, A rod limiting member (11) is further arranged on the side of the forming template (1). The middle part of the reverse pulling rod (8) is in sliding cooperation with the rod limiting member (11).

5. The ejector mechanism of the lifter spring for the tray mold according to claim 4, characterized in that, The convex portion (7) includes a clamping convex block (12) and an embedded block (13) arranged in the side lifter (4). A clamping space is formed between the clamping convex block (12) and the embedded block (13). The clamping portion (9) is in abutting and cooperating connection with the clamping convex block (12).

6. The ejector mechanism of the lifter spring for the tray mold according to claim 5, wherein, The tail connecting member (10) includes a plurality of connecting seats (14) arranged on the sliding plate (5). The connecting seats (14) are in rotational cooperation with the tail of the reverse pulling rod (8) through a rotating shaft.

7. The ejector mechanism of the inclined lifter spring of the tray mold according to claim 6, characterized in that, The rod limiting member (11) includes a plurality of limiting clamping plates (15) arranged on the side of the forming template (1). A limiting sliding groove (16) is arranged in the limiting clamping plate (15). An axial sliding sleeve (17) extending into the limiting sliding groove (16) is arranged in the middle part of the reverse pulling rod (8). The axial sliding sleeve (17) is in sliding cooperation with the limiting sliding groove (16).

8. The ejector mechanism of the inclined lifter spring of the tray mold according to claim 7, characterized in that, An anti - detachment clamping block (18) arranged alternately with the axial sliding sleeve (17) is further arranged in the middle part of the reverse pulling rod (8). The anti - detachment clamping block (18) is in sliding cooperation with the limiting sliding groove (16).

9. The ejector mechanism of the inclined ejector spring of the tray mold according to claim 8, characterized in that Two end limiting strips (19) symmetrically arranged along the center line of the end lifter (3) are arranged on the end lifter (3).

10. The ejector mechanism of the lifter spring for the tray mold according to claim 9, wherein, Two side limiting strips (20) symmetrically arranged along the center line of the side lifter (4) are arranged on the side lifter (4).

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