Push block side core-pulling structure and push block device for producing front lower bumper by using push block side core-pulling structure

Abstract

The utility model discloses a push block side core-pulling structure and a push block device used for producing a front lower bumper. The push block side core-pulling structure comprises an inclined sliding groove, an elastic telescopic piece, an elastic needle and a wear-resisting piece. The wear-resistant sheet can be fixed on the mold; the inclined chute is arranged in a push block device of the mold; the elastic needle is arranged in the inclined sliding groove, and the elastic needle can stretch out and draw back in the inclined sliding groove through the elastic telescopic piece; in the initial state, the wear-resisting piece abuts against the first end of the elastic needle, the elastic telescopic piece is compressed, and if a product is formed in the initial state, an inner hole of a Boss column of the product is restrained by an insertion core at the second end of the elastic needle; and in a non-initial state, the wear-resistant sheet does not abut against the elastic needle to compress the elastic telescopic piece any more, and under the action of the elastic telescopic piece and the inclined sliding groove, the second end of the elastic needle achieves the core pulling action till core insertion constraint is not formed on the Boss column inner hole of the formed product any more. The side core-pulling structure of the push block is simple in composition and beneficial to improving the production efficiency and saving the mold manufacturing cost and the product production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold design, and particularly relates to a push block side core pulling structure and a push block device for producing a front lower bumper. Background Art

[0002] During the product production process, the demolding direction of the four inner holes of the Boss columns in the middle of the large bumper mold product (such as the front lower bumper) is inconsistent with the demolding direction of the entire product. Specifically, the axis of the inner hole of the Boss column forms an angle of 1.73° with the demolding direction of the product (for ease of understanding, the explanation is as follows: assuming that the demolding direction of the product is vertically upward, the axis of the inner hole of the Boss column forms an angle of 1.73° with the vertically upward direction). This situation easily makes it difficult for the large bumper mold product to be ejected from the mold's pushing block device after molding. In the past, when encountering this technical problem, a separate "core pulling mechanism" would be made, but it would easily make the mold more complicated, thereby increasing the manufacturing cost of the mold. At present, there is a lack of a new type of "pushing block side core pulling structure" to improve the mold's core pulling capacity, improve product production efficiency, and save mold manufacturing costs and product production costs. At present, there is also a lack of a pushing block device for producing front lower bumpers to improve the product's ejection efficiency.

[0003] Therefore, a new technology is needed to solve the problem that the prior art lacks a new type of push block side core pulling structure; a new technology is needed to solve the problem that the prior art lacks a push block device for producing a front lower bumper. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, the utility model provides a push block side core pulling structure, which can realize the core pulling action through a simple structural composition, and complete the core pulling of the product (core pulling means reducing the constraints on the product when it is ejected), which is beneficial to improving production efficiency and saving mold manufacturing costs and product production costs.

[0005] The utility model adopts the following technical solutions:

[0006] A push block side core pulling structure, comprising an inclined chute, an elastic telescopic member, an elastic pin, and a wear-resistant sheet; the wear-resistant sheet can be fixed to a mold; the inclined chute is provided in a push block device of the mold; the elastic telescopic member and the elastic pin are provided in the inclined chute, and the elastic pin can be extended and retracted in the inclined chute via the elastic telescopic member;

[0007] In the initial state, the wear-resistant sheet abuts against the first end of the elastic needle, the elastic telescopic member is compressed, and if a product is formed in this initial state, the inner hole of the boss column of the formed product is constrained by the second end insert of the elastic needle;

[0008] When it is not in the initial state, the wear-resistant sheet no longer presses against the elastic needle to compress the elastic telescopic part. Under the action of the elastic telescopic part and the inclined slide groove, the second end of the elastic needle realizes a core-pulling action, and no longer constitutes a core-insertion constraint on the inner hole of the Boss column of the molded product.

[0009] Furthermore, the central axis of the inclined chute coincides with or is parallel to the central axis of the inner hole of the Boss column of the molded product.

[0010] Furthermore, the central axis of the inclined chute forms a set angle with the overall demoulding direction of the molded product.

[0011] Furthermore, the angle is 1.73°.

[0012] Furthermore, the elastic telescopic member is a spring.

[0013] Another object of the present invention is to provide a block pushing device for producing a front lower bumper, so as to improve the ejection efficiency of the product and reduce the production cost of the product.

[0014] A push block device for producing a front lower bumper, comprising a first push block, a pressure block, a first push rod and the push block side core pulling structure; the inclined slide comprises a first section inclined slide, a second section inclined slide, a third section inclined slide, a fourth section inclined slide and a fifth section inclined slide; the first section inclined slide, the second section inclined slide and the third section inclined slide are arranged in sections from top to bottom in the first push block; the fourth section inclined slide and the fifth section inclined slide are arranged in sections from top to bottom in the pressure block; the elastic telescopic member is arranged in the third section inclined slide; the first push block and the pressure block are detachably fixed, and after being fixed, the third section inclined slide is connected to the fourth section inclined slide;

[0015] The first push rod is connected to the pressing block and can drive the pressing block to move;

[0016] The wear-resistant sheet is located below the pressing block;

[0017] In the initial state, the second end of the elastic pin is in the first section of the inclined slot; if a product is being formed in the initial state, the boss column of the formed product can be located in the first section of the inclined slot, and the inner hole of the boss column of the formed product is constrained by the insert at the second end of the elastic pin;

[0018] When not in the initial state, the pressing block is away from the wear-resistant sheet, and under the action of the elastic telescopic member and the inclined slide groove, the second end of the spring pin can move downward from the first section of the inclined slide groove, thereby breaking away from the constraint on the inner hole of the boss column of the molded product.

[0019] Furthermore, it also includes a first fastener; the first push block and the pressing block are fixed to each other through the first fastener.

[0020] Furthermore, it also includes a second fastener; after one end of the first push rod passes through the wear-resistant plate, it is fixed to the pressing block through the second fastener.

[0021] Furthermore, it also includes a second push block and a second push rod; the first push block is provided with a groove; the second push block is arranged in the groove; one end of the second push rod passes through the wear-resistant plate, the pressure block and the first push block in sequence, is connected to the second push block, and can drive the second push block to move.

[0022] Furthermore, a third fastener is included; one end of the second push rod is fixed to the second push block through the third fastener.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The utility model discloses a push block side core pulling structure, which has a simple structural composition and can improve the core pulling ability of the mold for the inner hole of the Boss column of the "large bumper mold product". It does not complicate the structural composition of the mold. While improving the core pulling ability of the mold, it simplifies the mold core pulling structure (compared with the previous complex "core pulling mechanism"), which is beneficial to reducing the mold manufacturing cost; the utility model discloses a "push block side core pulling structure" which can improve the production efficiency of the mold for the "large bumper mold product" and reduce the product production cost.

[0025] The utility model discloses a block pushing device for producing a front lower bumper, which is provided with a novel "pushing block side core pulling structure", which can improve the ejection efficiency of "large bumper mold products" and reduce the production cost of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technology of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] Figure 1 It is a (side) sectional view of the core pulling structure on the push block side;

[0028] Figure 2 This is a schematic diagram of the back structure of the molded product (mainly showing the Boss column and its inner hole):

[0029] Figure 3 yes Figure 2 A partial enlarged view at point C (mainly showing the Boss column and its inner hole);

[0030] Figure 4 It is a three-dimensional schematic diagram of the push block device (can be based on Figure 4 Understand the positional arrangement relationship of components);

[0031] Figure 5yes Figure 4 (front) sectional view of the push block device (can be based on Figure 5 Understand the positional arrangement relationship of components);

[0032] Figure 6 yes Figure 4 The left side view of the push block device (can be based on Figure 6 Understand the positional arrangement relationship of components);

[0033] Figure 7 It is a three-dimensional schematic diagram of the first push block (showing its top surface features);

[0034] Figure 8 It is also a three-dimensional schematic diagram of the first push block (showing its bottom surface features);

[0035] Figure 9 The push block device with the formed product does not show the front view of the first push block (which can be based on Figure 9 Understand the positional arrangement relationship of components);

[0036] Figure 10 It is a front view of the push block device showing the first push block, the first fastener, the elastic member, the spring pin, the second push rod, and the third fastener (the figure is obtained by converting the three-dimensional model into a wireframe diagram, in which most of the lines belong to the normal phenomenon of the wireframe diagram) (can be based on Figure 10 Understand the positional arrangement relationship of components);

[0037] Figure 11 yes Figure 10 (wherein the first fastener is not shown);

[0038] Figure 12 is a three-dimensional schematic diagram of the push block device without showing the first push block;

[0039] Figure 13 yes Figure 12 (front) left side view of the second push rod (wherein the portion of the second push rod below the wear-resistant plate is not shown);

[0040] Figure 14 It is a three-dimensional schematic diagram of the second push block;

[0041] Figure 15 It is a three-dimensional schematic diagram of the briquette;

[0042] Figure 16 It is a three-dimensional schematic diagram of the pushing block device without showing the pressing block, the first pushing block, the first fastener, and the second pushing block.

[0043] Reference numerals:

[0044] 1-pushing block side core-pulling structure; 11-inclined chute; 111-first section of inclined chute; 112-second section of inclined chute; 113-third section of inclined chute; 114-fourth section of inclined chute; 115-fifth section of inclined chute; 12-elastic telescopic member; 13-elastic needle; 131-first shaft; 132-second shaft; 133-guide block; 134-third shaft; A-first end; B-second end; 14-wear-resistant sheet;

[0045] 2-product; 21-Boss column; 211-inner hole; C-partial enlarged view;

[0046] 3-push block device; 31-first push block; 311-groove; 32-pressing block; 33-first push rod; 34-first fastener; 35-second fastener; 36-second push block; 37-second push rod; 38-third fastener; 39-fourth fastener. DETAILED DESCRIPTION

[0047] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0048] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," and "right" used in this utility model are only used with respect to the relative positions of the components of the utility model in the accompanying drawings.

[0049] Reference Figures 1 to 16 A push block side core pulling structure 1 includes an inclined chute 11, an elastic telescopic member 12, an elastic pin 13, and a wear-resistant sheet 14; the wear-resistant sheet 14 can be fixed to the mold; the inclined chute 11 is provided in the push block device of the mold; the elastic telescopic member 12 and the elastic pin 13 are provided in the inclined chute 11, and the elastic pin 13 can be extended and retracted in the inclined chute 11 through the elastic telescopic member 12;

[0050] In the initial state, the wear-resistant sheet 14 abuts against the first end A of the elastic pin 13, and the elastic telescopic member 12 is compressed. If a product 2 is formed in this initial state, the inner hole 211 of the boss column 21 of the formed product 2 is constrained by the second end B of the elastic pin 13;

[0051] When it is not in the initial state, the wear-resistant plate 14 no longer presses against the elastic needle to compress the elastic telescopic part 12. Under the action of the elastic telescopic part 12 and the inclined slide 11 (wherein the elastic telescopic part 12 provides elastic force and the inclined slide 11 provides guiding action), the second end B of the elastic needle 13 realizes the core pulling action until it no longer constitutes a core insertion constraint on the inner hole 211 of the Boss column 21 of the molded product 2.

[0052] Reference Figures 1 to 16 In one embodiment, the central axis of the inclined chute 11 coincides with or is parallel to the central axis of the inner hole 211 of the boss column 21 of the molded product 2 .

[0053] Reference Figures 1 to 16 In one embodiment, the central axis of the inclined chute 11 forms a set angle with the overall demoulding direction of the molded product 2.

[0054] In one embodiment, the angle is 1.73°.

[0055] Reference Figures 1 to 16 In one embodiment, the elastic telescopic member 12 is a spring.

[0056] Reference Figures 1 to 16 In one embodiment, the elastic needle 13 includes multiple shaft sections with different diameters, with the section at the second end B of the elastic needle 13 having the smallest diameter. Specifically, the elastic needle 13 includes a first shaft 131, a second shaft 132, a guide block 133, and a third shaft 134. The first shaft 131, the second shaft 132, the guide block 133, and the third shaft 134 are sequentially connected to form the elastic needle 13, and the first shaft 131, the second shaft 132, and the third shaft 134 share a common central axis. The first shaft 131 has the smallest diameter.

[0057] Another object of the present invention is to provide a block pushing device 3 for producing a front lower bumper, so as to improve the ejection efficiency of the product 2 and reduce the production cost of the product 2.

[0058] Reference Figures 1 to 16 A push block device 3 for producing a front lower bumper includes a first push block 31, a pressure block 32, a first push rod 33 and the push block side core pulling structure 1; the inclined chute 11 includes a first section inclined chute 111, a second section inclined chute 112, a third section inclined chute 113, a fourth section inclined chute 114 and a fifth section inclined chute 115; the first section inclined chute 111, the second section inclined chute 112 and the third section inclined chute 113, from top to bottom (the "from top to bottom" is relative to the attached Figure 1The fourth section inclined chute 114 and the fifth section inclined chute 115 are arranged in the first push block 31 according to the section; the ... Figure 1 The first push block 31 and the press block 32 are arranged in sections in the press block 32; the elastic telescopic member 12 is arranged in the third section inclined chute 113; the first push block 31 and the press block 32 are detachably fixed, and after being fixed, the third section inclined chute 113 is connected to the fourth section inclined chute 114;

[0059] The first push rod 33 is connected to the pressing block 32 and can drive the pressing block 32 to move (i.e., the first push rod 33 drives the pressing block 32 away from or close to the wear-resistant plate 14);

[0060] The wear-resistant sheet 14 is located below the pressing block 32 (the "below (direction)" is relative to the adjacent Figure 1 (wherein, if the pressing block 32 is away from the wear-resistant sheet 14 under the action of the first push rod 33, the pressing block 32 has no contact relationship with the wear-resistant sheet 14; if the pressing block 32 is closely attached to the wear-resistant sheet 14 under the action of the first push rod 33, the pressing block 32 has a "surface" contact relationship with the wear-resistant sheet 14, and at this time, the first end A of the elastic pin 13 is against the wear-resistant sheet 14, and the elastic telescopic member 12 is compressed (this state is the initial state));

[0061] In the initial state, the second end B of the elastic pin 13 is in the first section of the inclined slot 111. If a product 2 is being formed in the initial state, the boss column 21 of the formed product 2 can be located in the first section of the inclined slot 111, and the inner hole 211 of the boss column 21 of the formed product 2 is constrained by the insert of the second end B of the elastic pin 13.

[0062] In the non-initial state, the pressing block 32 is away from the wear-resistant sheet 14, and the second end B of the spring pin 13 can move downward from the first section of the inclined slot 111 under the action of the elastic telescopic member 12 and the inclined slot 11 (the "downward (direction)" is relative to the attached Figure 1 (In terms of), it is free from the constraints on the inner hole 211 of the Boss column 21 of the molded product.

[0063] Reference Figures 1 to 16 In one embodiment, the first push block 31 and the pressure block 32 are further secured to each other via a first fastener 34 (e.g., the first fastener 34 is a bolt, and the first push block 31 and the pressure block 32 are secured to each other via the first fastener 34). A plurality of first fasteners 34 are provided. In this embodiment, four first fasteners 34 are provided.

[0064] Reference Figures 1 to 16In one embodiment, it further includes a second fastener 35; after one end of the first push rod 33 passes through the wear-resistant plate 14, it is fixed to the pressure block 32 through the second fastener 35 (such as the second fastener 35 is a bolt: one end of the first push rod 33 is locked with the pressure block 32 through the bolt).

[0065] Reference Figures 1 to 16 In one embodiment, it further includes a second push block 36 and a second push rod 37; the first push block 31 is provided with a groove 311; the second push block 36 is arranged in the groove 311; one end of the second push rod 37 passes through the wear-resistant plate 14, the pressure block 32 and the first push block 31 in sequence, and is connected to the second push block 36 (refer to Figure 5 and Figure 9 ), and can drive the second push block 36 to move (that is, under the action of the second push rod 37, the second push block 36 moves out of the groove 311 or moves back to be in the groove 311).

[0066] Reference Figures 1 to 16 In one embodiment, it further includes a third fastener 38; one end of the second push rod 37 is fixed to the second push block 36 through the third fastener 38 (such as the third fastener 38 is a bolt: one end of the second push rod 37 is locked to the second push block 36 through the bolt).

[0067] Reference Figures 1 to 16 In one embodiment, it further includes a fourth fastener 39; the wear-resistant sheet 14 is fixed to the set position of the mold by the fourth fastener 39 (e.g., the fourth fastener 39 is a bolt: the wear-resistant sheet 14 is locked to the set position of the mold by the bolt).

[0068] Reference Figures 1 to 16 In one embodiment, the specific working process of the pushing block device 3 includes the following working process:

[0069] After the mold is opened, during the ejection process of the molded product 2 (such as the front lower bumper), the first push rod 33 pushes the "pressing block 32 and the first pushing block 31" upward (the "upward (direction)" is relative to the attached Figure 1 In this case, the pressing block 32 is out of contact with the wear-resistant block 14. At this time, the spring pin 13, driven by the elastic telescopic member 12, moves along the guide direction of the inclined slide 11 until the second end B of the spring pin 13 is pulled out of the inner hole 211 of the boss column 21 of the molded product 2. Then, the second push rod 37 pushes the second push block 36 to push the molded product 2 away from the first push block 31, thereby completing a "one-time product ejection action".

[0070] Afterwards, the pusher device 3 can be driven by the second push rod 37 and the first push rod 33 to return to its initial state. In the initial state, the bottom of the first end A of the spring pin 13 is in close contact with the wear-resistant plate 14, and the elastic member 12 is compressed, causing the second end B of the spring pin 13 to return to its original position ("returning to its original position in the first section of the inclined slot 111").

[0071] For other contents of the push block side core-pulling structure and the push block device for producing the front lower bumper described in the present invention, please refer to the prior art and will not be described in detail here.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A push block side core pulling structure, characterized in that: The invention comprises an inclined chute, an elastic telescopic member, an elastic needle and a wear-resistant sheet; the wear-resistant sheet can be fixed to the mold; the inclined chute is arranged in the push block device of the mold; the elastic telescopic member and the elastic needle are arranged in the inclined chute, and the elastic needle can be extended and retracted in the inclined chute through the elastic telescopic member; In the initial state, the wear-resistant sheet abuts against the first end of the elastic needle, the elastic telescopic member is compressed, and if a product is formed in this initial state, the inner hole of the boss column of the formed product is constrained by the second end insert of the elastic needle; When it is not in the initial state, the wear-resistant sheet no longer presses against the elastic needle to compress the elastic telescopic part. Under the action of the elastic telescopic part and the inclined slide groove, the second end of the elastic needle realizes a core-pulling action, and no longer constitutes a core-insertion constraint on the inner hole of the Boss column of the molded product.

2. The push block side core pulling structure according to claim 1, characterized in that: The central axis of the inclined chute coincides with or is parallel to the central axis of the inner hole of the Boss column of the molded product.

3. The push block side core pulling structure according to claim 1, characterized in that: The central axis of the inclined chute forms a set angle with the overall demoulding direction of the molded product.

4. The push block side core pulling structure according to claim 3, characterized in that: The included angle is 1.73°.

5. The push block side core pulling structure according to claim 1, characterized in that: The elastic telescopic member is a spring.

6. A push block device for producing a front lower bumper, characterized in that: It includes a first push block, a pressure block, a first push rod and the push block side core pulling structure according to any one of claims 1 to 5; the inclined slide includes a first section inclined slide, a second section inclined slide, a third section inclined slide, a fourth section inclined slide and a fifth section inclined slide; the first section inclined slide, the second section inclined slide and the third section inclined slide are arranged in sections from top to bottom in the first push block; the fourth section inclined slide and the fifth section inclined slide are arranged in sections from top to bottom in the pressure block; the elastic telescopic member is arranged in the third section inclined slide; the first push block and the pressure block are detachably fixed, and after being fixed, the third section inclined slide is connected to the fourth section inclined slide; The first push rod is connected to the pressing block and can drive the pressing block to move; The wear-resistant sheet is located below the pressing block; In the initial state, the second end of the elastic pin is in the first section of the inclined slot; if a product is being formed in the initial state, the boss column of the formed product can be located in the first section of the inclined slot, and the inner hole of the boss column of the formed product is constrained by the insert at the second end of the elastic pin; When not in the initial state, the pressing block is away from the wear-resistant sheet, and under the action of the elastic telescopic member and the inclined slide groove, the second end of the spring pin can move downward from the first section of the inclined slide groove, thereby breaking away from the constraint on the inner hole of the boss column of the molded product.

7. The push block device for producing a front lower bumper according to claim 6, characterized in that: It also includes a first fastener; the first push block and the pressing block are fixed to each other through the first fastener.

8. The push block device for producing a front lower bumper according to claim 6, characterized in that: It also includes a second fastener; after one end of the first push rod passes through the wear-resistant plate, it is fixed to the pressing block through the second fastener.

9. The push block device for producing a front lower bumper according to claim 6, characterized in that: It also includes a second push block and a second push rod; the first push block is provided with a groove; the second push block is arranged in the groove; one end of the second push rod passes through the wear-resistant plate, the pressure block and the first push block in sequence, is connected to the second push block, and can drive the second push block to move.

10. The push block device for producing a front lower bumper according to claim 9, characterized in that: It also includes a third fastener; one end of the second push rod is fixed to the second push block through the third fastener.

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