Multi-group top block floating structure

Abstract

The utility model belongs to the field of automobile injection molds, and particularly relates to a multi-group ejector block floating structure which comprises a plurality of ejector blocks, a plurality of ejector block guide sliding sleeves, a plurality of ejector block rods, a plurality of limiting blocks, a fixing plate, a plurality of springs and a plurality of guide columns, the ejector blocks are fixed to the tops of the ejector block rods, the ejector block guide sliding sleeves are connected to the ejector block rods in a sleeving mode, and the ejector block rods slide in the ejector block guide sliding sleeves; the bottom of the top block rod is fixed on the fixing plate, the fixing plate is movably arranged on the bottom plate, the guide column penetrates through the fixing plate, the lower portion of the guide column is fixed on the bottom plate, the upper portion of the guide column is arranged in the needle plate, and the spring is compressed in the bottom plate and the top of the spring makes contact with the bottom face of the fixing plate. The lower portions of the limiting blocks are fixed to the bottom plate, the upper portions of the limiting blocks are arranged in the needle plate, the lower portions of the limiting blocks are located on the outer side of the fixing plate, the tops of the limiting blocks extend into the fixing plate, the sections of the limiting blocks are inverted-L-shaped, and the fixing plate is limited with the tops of the limiting blocks after moving upwards under the action of the springs. The ejection block and the product stop moving after being ejected out together, and then the mold continues to eject out the product.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile injection mold, concretely relates to a multi-group top block floating structure. BACKGROUND

[0002] For the conventional top block structure of plastic mold (such as Figure 1 As shown) is limited by the product circular deep rib structure characteristics, the automobile product will design very deep functional rib and limit rib in order to increase product function and support own strength, generally will be above 40mm.When the product is circular or other forms of closed rib, if the mold is directly ejected with the top block, because the rib of the product is too deep, the risk of product sticking to the mold is greater, the stress of the top block is larger when ejecting and the top block is easy to produce the top block printing, the top block also wraps the circular rib, the product is clamped on the top block, causes difficult to take out, forcibly takes out and also can break the mouth of the rib, if a large amount of release agent is used to take out the product, different schemes need to be designed in the later period, a large amount of time and energy are spent to rectify. CONTENT OF UTILITY MODEL

[0003] In order to solve the above problems existing in the prior art, the utility model provides a multi-group top block floating structure, adopts the cooperation of the fixed plate and the spring, makes the top block move together with the product under the action of the spring and stop after moving a distance, makes the rib of the product and the mold itself separate, and then the mold continues to eject the product, so that the product and the top block are separated, and the problem of sticking to the mold is solved.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a multi-group top block floating structure, comprising a plurality of top blocks, a plurality of top block guide sleeves, a plurality of top block rods, a plurality of limit blocks, a fixed plate, a plurality of springs and a plurality of guide columns, the top block is fixed at the top of the top block rod, the top block guide sleeve is sleeved on the top block rod and the top block rod slides in the top block guide sleeve, the bottom of the top block rod is fixed on the fixed plate, the fixed plate is movably arranged on the bottom plate, the guide column is fixed at the lower part of the fixed plate after penetrating through the fixed plate, the upper part is arranged in the needle plate and the fixed plate slides on the guide column, the spring is arranged in the bottom plate and the top of the spring is in contact with the bottom surface of the fixed plate, the lower part of the limit block is fixed on the bottom plate, the upper part is arranged in the needle plate, the lower part of the limit block is located outside the fixed plate, the top extends to the inside of the fixed plate, and the cross section of the limit block is inverted L-shaped.

[0005] Further, a plurality of through holes and a plurality of waist round cavities are formed in the fixed plate, a guide sleeve is arranged in the through hole, the guide column penetrates through the guide sleeve on the fixed plate, and the bottom of the top block rod is inserted into the waist round cavity and fixed on the fixed plate.

[0006] Further, the bottom plate is provided with a cavity I matched with the fixed plate and a plurality of cavities II matched with the springs, the fixed plate is movably placed in the cavity I, the cavities II are formed by extending downward from the bottom surface of the cavity I, and the springs are placed in the cavities II.

[0007] Further, the needle plate is provided with a plurality of cavities III matched with the upper portions of the limiting blocks and a plurality of cavities IV matched with the guide columns, the upper portions of the limiting blocks are placed in the cavities III, and the upper portions of the guide columns are placed in the cavities IV.

[0008] Further, when the plurality of sets of floating structures of the top blocks are installed in the mold, the spacing between the fixed plate and the top portions of the limiting blocks is a, and a is 20 mm.

[0009] Compared with the prior art, the beneficial effects of the utility model are that: the utility model keeps a certain synchronization with the product in the process of ejection of the top block, compared with the prior art, the concentrated stress of the top block can be reduced, and the top block printing is not generated, after the synchronization is finished, other structures of the mold continue to be ejected upward, the ejection function is realized, the sticking of the mold and the clamping of the top block are improved, the quality of the product is improved, and the product taking difficulty is not caused; the utility model occupies small space, the ejection is balanced, and the structure is stable, so that the risk in the production process is greatly reduced, and the cost of the mold and the procurement cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a prior art structure schematic view;

[0011] Figure 2 It is an utility model structure explosion map;

[0012] Figure 3 It is an utility model structure schematic view installed on the mold;

[0013] Figure 4 It is an utility model top view when being installed on the mold;

[0014] Figure 5 It is Figure 4 the section view at F-F;

[0015] Figure 6 It is an utility model structure schematic view when ejecting the product on the mold;

[0016] Figure 7 It is an utility model top view when ejecting the product on the mold;

[0017] Figure 8 It is Figure 7 the section view at H-H;

[0018] Figure 9 It is Figure 5 the enlarged view at G;

[0019] Figure 10 for Figure 8 Enlarged view of section J in the middle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 2-10 This utility model provides the following technical solution: a multi-group floating top block structure, including several top blocks 2, several top block guide sleeves 3, several top block rods 4, several limiting blocks 5, a fixing plate 6, several springs 7, and several guide posts 9. The top surfaces of several top blocks 2 are distributed and supported by deep ribs around the product 1. The bottom of the top blocks 2 is fixed to the top of the top of the top block rods 4 by screws. The top block guide sleeves 3 are sleeved on the top block rods 4, and the top block rods 4 slide in the top block guide sleeves 3. The top block guide sleeves 3 have the functions of guiding and lubrication to prevent damage to the top block rods 4. The top block guide sleeves 4 are fixed in the mold. The bottom of the top block rods 4 is fixed to the fixing plate 6 by screws. The fixing plate 6 is movably set on the base plate 11. The guide posts 9 pass through the fixing plate 6 and are fixed to the base plate 11 by screws at the bottom and at the top. The fixing plate 6 is placed inside the needle plate 10 and slides up and down on the guide post 9. The guide post 6 is fixedly fixed on the base plate 11. When installed on the mold, the spring 7 is compressed and dispersed inside the base plate 11, and the top of the spring 7 contacts the bottom surface of the fixing plate 6. The spring 4 has an upward pushing force on the fixing plate 6. The lower part of the limiting block 5 is fixed on the base plate 11, the upper part is placed inside the needle plate 10, the lower part of the limiting block 5 is located outside the fixing plate 6, and the top extends into the fixing plate 6. The cross-section of the limiting block 5 is an inverted L-shape. The limiting blocks 5 are set on both sides of the fixing plate and are symmetrical to each other, and are generally set to four. After the fixing plate 6 moves up under the action of the spring 7, it is limited by the top of several limiting blocks 5. The number of top block 2, top block guide sleeve 3, top block rod 4 and oblong cavity 62 is the same, and is generally set to three. During the ejection process, the spring 7 pushes the fixed plate 6 to move upward along the guide post 9. Since the fixed plate 6, the ejector rod 4, and the ejector block 2 are connected in sequence, the ejector rod 4, the ejector block 2 and the fixed plate 6 move upward synchronously. The ejector block 2 and the product 1 are ejected synchronously. Then, when the fixed plate 6 moves upward to be limited by the limiting block 5, the fixed plate 6 stops moving. At this time, the rib of the product 1 is separated from the mold itself. Then the mold continues to eject the product 1, causing the product 1 and the ejector block 2 to separate.

[0022] Specifically, a plurality of through holes 61 and a plurality of waist round cavities 62 are formed on the fixed plate 6, a guide sleeve 8 is arranged in the through hole 61, the guide column 9 passes through the guide sleeve 8 on the fixed plate 6, the guide sleeve 8 has a guiding effect on the guide column 9, avoiding damage to the guide column 9, and the top block rod 4 is inserted into the waist round cavity 62 and then fixed on the fixed plate 6 by a screw.

[0023] Specifically, the bottom plate 11 is provided with a cavity one 111 matched with the fixed plate 6 and a plurality of cavity twos 112 matched with the springs 7, the fixed plate 6 is movably placed in the cavity one 111 and the upper part of the fixed plate 6 protrudes from the surface of the bottom plate 11, the cavity twos 112 are formed by extending downward from the bottom surface of the cavity one 111, the plurality of cavity twos 112 are dispersedly arranged below the cavity one 111, and the springs 7 are placed in the cavity twos 112.

[0024] Specifically, the needle plate 10 is provided with a plurality of cavity threes 101 matched with the upper part of the limiting block 5 and a plurality of cavity fours 102 matched with the guide column 9, the upper part of the limiting block 5 is placed in the cavity three 101 when the limiting block 5 is installed on the needle plate 10, the upper part of the guide column 9 is placed in the cavity four 102, and a gap is left between the needle plate 10 and the bottom plate 11 after the components on the needle plate 10 and the components on the bottom plate 11 are installed.

[0025] Specifically, when a plurality of groups of top block floating structures are installed in the mold, the distance between the fixed plate 6 and the top of the limiting block 5 is a, a is 20 mm, the fixed plate 6, the top block rod 4 and the top block 2 can synchronously move upward by 20 mm and then stop moving.

[0026] The utility model discloses the installation and movement process are as follows: first, the guide pillar 9 is fixed on the bottom plate 11 through screw, then the spring 7 is put into the cavity two 112 on the bottom plate 11 respectively, then the guide sleeve 8 is installed in the through hole 61 on the fixed plate 6 respectively, then the fixed plate 6 is installed in the cavity one 111 on the bottom plate 11 through the guide pillar 9, then the four limit blocks 5 are symmetrically screwed on the bottom plate 11, then the top block 2 is fixed on the top block rod 4 through screw, the top block guide sleeve 3 and the needle plate 10 on the mould are passed through in proper order, and finally the top block rod 4 is inserted in the waist cavity 62 on the fixed plate 6, then the top block rod 4 and the fixed plate 6 are connected through screw, and finally the bottom plate 11 is locked and fixed through screw and mould frame, so that the assembly is completed.When the mould is ejected, the needle plate 10 moves along, and since the guide pillar 9 and the limit block 5 are fixed on the bottom plate 11, the upper part of the guide pillar 9 and the limit block 5 gradually separate from the needle plate 10, the spring 7 pushes the fixed plate 6 to move upwards along the guide pillar 9, since the fixed plate 6, the top block rod 4 and the top block 2 are connected in proper order, the top block rod 4 and the top block 2 move upwards synchronously with the fixed plate 6, the top block 2 is ejected synchronously with the product 1, then when the fixed plate 6 moves upwards to the limit block 5, the fixed plate 6 stops moving, at this time, the muscle of the product 1 separates from the mould itself, the top block 2 is ejected 20mm synchronously with the product 1, the top block 2 and the mould eject the product 1 together, the stress of the top block 2 is small, the holding force of the product 1 on the top block 2 can be reduced, the top block mark on the product 1 is eliminated, the product 1 is not too serious to stick to the top block 2, and then the several top rods 12 on the mould continue to eject the product, so that the product and the top block 2 are separated easily, the product 1 is not clamped on the top block 2, causing difficult to take the product, and the mouth of the muscle of the product 1 is not damaged.

[0027] The utility model plays the role of ejection, improves the situation of sticking to the mould, improves the quality of the product 1, and does not cause the difficulty of taking the product, and the ejection is balanced, and the structure is stable, so that the risk in the production process is greatly reduced.When the product 1 has a circular or other form of closed muscle, and the height is more than 40mm, the utility model can solve the situation that the top block 2 is concentratedly stressed when being ejected, the product 1 sticks to the mould, and the product 1 is clamped on the top block 2 and the mouth is damaged, and the expensive cost of the mould in the later period of reform is avoided.

[0028] Finally, it should be pointed out that: the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part of technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-group floating top block structure, characterized in that, It includes several top blocks (2), several top block guide sleeves (3), several top block rods (4), several limiting blocks (5), a fixing plate (6), several springs (7), and several guide posts (9). The top blocks (2) are fixed to the top of the top block rods (4). The top block guide sleeves (3) are sleeved on the top block rods (4), and the top block rods (4) slide in the top block guide sleeves (3). The bottom of the top block rods (4) is fixed on the fixing plate (6). The fixing plate (6) is movably set on the base plate (11). The guide posts (9) pass through the fixing plate (6) and are fixed at the bottom on the base plate (11). The upper part is placed inside the needle plate (10) and the fixing plate (6) slides on the guide post (9). The spring (7) is compressed and set inside the base plate (11) and the top of the spring (7) contacts the bottom surface of the fixing plate (6). The lower part of the limiting block (5) is fixed on the base plate (11), the upper part is placed inside the needle plate (10), the lower part of the limiting block (5) is located outside the fixing plate (6), and the top extends into the fixing plate (6). The cross section of the limiting block (5) is an inverted L-shape. After the fixing plate (6) moves up under the action of the spring (7), it is limited by the top of several limiting blocks (5).

2. The multi-group floating top block structure according to claim 1, characterized in that, The fixing plate (6) has several through holes (61) and several oval cavities (62). A guide sleeve (8) is provided in the through hole (61). The guide post (9) passes through the guide sleeve (8) on the fixing plate (6). The bottom of the top block rod (4) is inserted into the oval cavity (62) and then fixed on the fixing plate (6).

3. The multi-group floating top block structure according to claim 2, characterized in that, The base plate (11) is provided with a cavity one (111) adapted to the fixing plate (6) and a plurality of cavities two (112) adapted to the spring (7). The fixing plate (6) is movably placed in the cavity one (111). The cavities two (112) are formed by extending downward from the bottom surface of the cavity one (111). The spring (7) is placed in the cavity two (112).

4. The multi-group floating top block structure according to claim 3, characterized in that, The needle plate (10) is provided with a plurality of cavities three (101) adapted to the upper part of the limiting block (5) and a plurality of cavities four (102) adapted to the guide post (9). The upper part of the limiting block (5) is placed in the cavity three (101) and the upper part of the guide post (9) is placed in the cavity four (102).

5. A multi-group floating top block structure according to claim 4, characterized in that, When the multiple sets of floating top blocks are installed in the mold, the distance between the top of the fixed plate (6) and the top of the limiting block (5) is a, where a is 20mm.

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