Extrusion die

Abstract

The utility model discloses an extrusion die in the field of extrusion dies, which comprises an upper die and a lower die which are distributed up and down, a stripping plate insert is arranged in the upper die, an inclined sliding block and an ejection block are arranged in the lower die, and the ejection block can be switched between a pressing position and a separating position; when the ejection block is located at the separation position, the ejection block is not in contact with the product to be extruded, and the stripping plate insert and the inclined sliding block are matched to clamp the bent section of the product to be extruded; and when the material jacking block is located at the pressing position, the material jacking block flaps the flapping section of the product to be extruded. The utility model solves the problems that the product is deformed and the size of the product is unstable due to the fact that the ejection block is contacted with the product and flattens the flattened part of the product under the condition that the product is not completely wrapped by the mold when the existing extrusion mold is half-opened, and ensures that the product to be extruded is not completely wrapped by the mold before the product to be extruded is completely wrapped by the mold. And the ejection block does not apply unnecessary pressure or deformation force to the product to be extruded, so that the product is prevented from being deformed, and the stability of the product size is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion dies, in particular to an extrusion die. Background Art

[0002] With the rapid development of polymer plastics, plastic molds are closely related to people's lives. As an important component that connects the front and back covers of mobile phones and protects internal components, the manufacturing process of mobile phone frames is particularly critical. A bending portion is provided on the mobile phone frame, and buckle feet are provided at the ends of the bending portion. In the production process of mobile phone accessories, an extrusion mold is often needed to press the bending portion of the mobile phone frame, and then the buckle feet of the mobile phone frame are squeezed and flattened and bent through the top material block, so that the buckle feet of the mobile phone frame can be buckled on the mobile phone to prevent the frame from falling. However, when the existing extrusion mold is half-opened, the top material block has already contacted the product and flattened the flattened part of the product when the bending portion of the product has not been completely covered by the mold, resulting in deformation of the product and instability of the product size.

[0003] The above defects need to be solved urgently. Utility Model Content

[0004] In order to solve the problem that when the existing extrusion die is half-opened, the ejector block has already contacted the product and flattened the flattened part of the product before the product is completely covered by the die, resulting in product deformation and unstable product size, the utility model provides an extrusion die.

[0005] The technical solution of the utility model is as follows:

[0006] An extrusion die comprises an upper die and a lower die which are arranged in an upper and lower position, wherein a stripping insert is arranged in the upper die, and an inclined sliding block and a material ejecting block are arranged in the lower die, and the material ejecting block can be switched between a pressing position and a separation position;

[0007] When the ejecting block is in the separated position, the ejecting block does not contact the product to be extruded, and the stripping insert cooperates with the inclined slider to clamp the curved section of the product to be extruded;

[0008] When the ejecting block is in the pressing position, the ejecting block flattens the flattened section of the product to be extruded.

[0009] According to the utility model of the above scheme, a first force transmission block is arranged in the lower mold, a second force transmission block is arranged below the first force transmission block, and the first force transmission block abuts against one end of the second force transmission block, and the ejecting block abuts against the other end of the second force transmission block;

[0010] When the first force transmission block moves downward, it drives the second force transmission block to rotate along its own central axis, so that the lifting block moves upward, so as to switch the lifting block from the separation position to the pressing position.

[0011] According to the utility model of the above scheme, a punch is also provided in the upper die, and the position of the punch corresponds to that of the first force transmission block up and down. When the upper die and the lower die are closed, the punch pushes the first force transmission block to move downward.

[0012] According to the utility model of the above scheme, the punch includes a base, and the base protrudes outward to form an extrusion portion. When the upper mold and the lower mold are closed, the extrusion portion abuts against the first force transmission block.

[0013] According to the above-mentioned solution of the utility model, the width of the extrusion portion is smaller than the width of the base portion.

[0014] According to the above scheme of the utility model, the middle of the top of the second force transmission block protrudes outward to form a rotating part, and the rotating part is connected to the lower mold through a rotating shaft. The first abutment part and the second abutment part are respectively provided at both ends of the rotating part. The bottom of the first force transmission block abuts against the first abutment part, and the bottom of the top material block abuts against the second abutment part.

[0015] According to the utility model of the above scheme, a first elastic member is further provided in the lower mold, one end of the first elastic member is connected to the top material block, and the other end of the first elastic member is connected to the lower mold through a connecting member.

[0016] According to the above-mentioned solution of the utility model, a mounting groove is provided on the top material block, and at least a part of the first elastic member is disposed in the mounting groove.

[0017] According to the utility model of the above scheme, a ejection pin is provided at the bottom of the inclined sliding block, and a second elastic member is provided at the bottom of the ejection pin to facilitate separation of the product from the inclined sliding block.

[0018] According to the utility model of the above scheme, a bending groove is provided on the stripping insert, and a bending portion is correspondingly provided on the inclined sliding block. When the top material block is in the separation position, the bending groove cooperates with the bending portion to clamp the curved section of the product to be extruded.

[0019] The utility model according to the above scheme has the following beneficial effects:

[0020] In the above extrusion die, when the ejector block is in the separated position, the ejector block does not contact the product to be extruded, and the stripping insert cooperates with the inclined slider to clamp the curved section of the product to be extruded, that is, when the upper die and the lower die are in the half-open die, the upper die and the lower die can completely wrap the bent part of the product to be extruded, and the ejector block will not contact the product to be extruded, ensuring that before the product to be extruded is completely wrapped by the die, the ejector block will not apply unnecessary pressure or deformation force to the product to be extruded, preventing product deformation, ensuring the stability of product size, and avoiding the phenomenon of dimensional deviation after mass production. In addition, when the ejector block is in the pressing position, the ejector block flattens the flattened section of the product to be extruded, thereby squeezing the buckle feet of the mobile phone frame and flattening and bending them. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of the existing extrusion die when the die is half-opened;

[0022] Figure 2 for Figure 1 A magnified view of part A;

[0023] Figure 3 This is the second structural schematic diagram of the existing extrusion die when the die is half-opened;

[0024] Figure 4 for Figure 3 A magnified view of part B;

[0025] Figure 5 This is one of the structural schematic diagrams of the utility model when the mold is half opened;

[0026] Figure 6 for Figure 5 Enlarged view of part C;

[0027] Figure 7 This is the second structural schematic diagram of the utility model when the mold is half opened;

[0028] Figure 8 for Figure 7 A magnified view of part D in the middle;

[0029] Fig. 9 It is a schematic diagram of the structure of the utility model when the mold is closed;

[0030] Fig.10 for Fig. 9 Enlarged view of part E in the middle;

[0031] Fig.11 It is a schematic diagram of the structure of the product to be extruded.

[0032] In the figure, 10, upper die; 101, stripping insert; 102, punch; 1021, base; 1022, extrusion part;

[0033] 20, lower die; 201, inclined slide block; 202, ejector block; 2021, mounting groove; 203, ejector pin; 204, second elastic member; 205, first force transmission block; 206, second force transmission block; 2061, rotating part; 2062, first abutting part; 2063, second abutting part; 207, first elastic member;

[0034] 30. Product to be extruded; 301. Bending section; 302. Flattening section. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] like Figures 1 to 4 As shown, in the existing extrusion mold, when the upper mold 10 and the lower mold 20 are in a semi-open mold state, for example, when the stripper plate is still 2mm away from being pressed and closed, the stripper plate insert 101 in the upper mold 10 and the inclined slider 201 in the lower mold 20 do not completely cover the product 30 to be extruded, and the ejector block 202 has already contacted the product 30 to be extruded and flattened the product upwards, which can easily lead to product deformation and unstable product size.

[0037] like Figures 5 to 11 As shown, in order to solve the above technical problems, the utility model provides an extrusion die, including an upper die 10 and a lower die 20 distributed in an upper and lower manner, wherein a stripping insert 101 is arranged in the upper die 10, and an inclined slider 201 and a top block 202 are arranged in the lower die 20, and the top block 202 can be switched between a pressing position and a separation position; when the top block 202 is in the separation position, the top block 202 does not contact the product 30 to be extruded, and the stripping insert 101 cooperates with the inclined slider 201 to clamp the product 30 to be extruded. 0, that is, when the upper mold 10 and the lower mold 20 are in a semi-open mold state, the upper mold 10 and the lower mold 20 can completely cover the bending part of the product 30 to be extruded, and the top material block 202 will not contact the product 30 to be extruded, ensuring that before the product 30 to be extruded is not completely wrapped by the mold, the top material block 202 will not apply unnecessary pressure or deformation force to the product 30 to be extruded, preventing product deformation, ensuring the stability of product size, and avoiding the phenomenon of dimensional deviation after mass production. In addition, when the top material block 202 is in the pressing position, the top material block 202 flattens the flattening section 302 of the product 30 to be extruded, thereby squeezing and flattening the buckle foot of the mobile phone frame.

[0038] like Figure 5 , Figure 6As shown, in the present embodiment, a bending groove is provided on the stripping insert 101, and a bending portion is correspondingly provided on the inclined sliding block 201. When the ejecting block 202 is in the separated position, that is, when the upper mold 10 and the lower mold 20 are in a semi-open mold state, the bending groove cooperates with the bending portion to clamp the bending section 301 of the product to be extruded 30, thereby ensuring that the product to be extruded 30 can maintain its original shape and dimensional accuracy in subsequent processing steps, and preventing the product to be extruded 30 from deformation. In addition, a push pin 203 is provided at the bottom of the inclined slide block 201, and a second elastic member 204 is provided at the bottom of the push pin 203. When the upper mold 10 and the lower mold 20 are in a closed mold state, the second elastic member 204 is deformed, and when the upper mold 10 and the lower mold 20 are in an open mold state, the second elastic member 204 recovers its deformation, and the second elastic member 204 pushes the push pin 203 to move upward, so that the push pin 203 pushes the inclined slide block 201 to move to the upper left, so as to separate the processed product from the inclined slide block 201. In addition, the second elastic member 204 can be designed as a spring. Of course, in actual design, the structure of the second elastic member 204 can be designed according to actual needs.

[0039] It should be noted that the product 30 to be extruded is provided with a plurality of bending portions, and the buckle feet at the end of each bending portion are flattened by a corresponding extrusion die.

[0040] like Figure 6 , Figure 8 As shown, in this embodiment, a first force transmission block 205 is arranged in the lower mold 20, and a second force transmission block 206 is arranged below the first force transmission block 205, and the first force transmission block 205 abuts against one end of the second force transmission block 206, and the top material block 202 abuts against the other end of the second force transmission block 206. When the first force transmission block 205 moves downward, it drives the second force transmission block 206 to rotate along its own central axis, so that the top material block 202 moves upward, so as to switch the top material block 202 from the separation position to the pressing position, that is, the mutual cooperation movement of the first force transmission block 205 and the second force transmission block 206 not only ensures the smooth transmission of force, but also makes the whole structure have certain flexibility and adjustability. In the process of the top material block 202 moving upward, the bottom of the top material block 202 is in close contact with the flattening section 302 of the product 30 to be extruded, and sufficient pressure is applied. As the pressure gradually increases, the flattening section 302 is extruded to a predetermined shape.

[0041] like Figures 5 to 11As shown, in this embodiment, the middle of the top of the second force transmission block 206 protrudes outward to form a rotating part 2061, and the rotating part 2061 is connected to the lower mold 20 through a rotating shaft, and the rotating part 2061 can rotate around the rotating shaft. In addition, the two ends of the rotating part 2061 are respectively provided with a first abutting part 2062 and a second abutting part 2063, the bottom of the first force transmission block 205 abuts against the first abutting part 2062, and the bottom of the top material block 202 abuts against the second abutting part 2063. The rotating part 2061, the first abutting part 2062, the second abutting part 2063, and the first force transmission block 205 and the top material block 202 that are closely matched therewith together constitute a transmission system, so as to flatten the flattened section 302 of the product 30 to be extruded.

[0042] In this embodiment, a punch 102 is further provided in the upper die 10, and the position of the punch 102 corresponds to that of the first force transmission block 205, that is, the punch 102 in the upper die 10 and the first force transmission block 205 in the lower die 20 are distributed up and down in the vertical direction, ensuring that when the upper die 10 and the lower die 20 are closed, the punch 102 can accurately contact the first force transmission block 205, thereby triggering the subsequent mechanical transmission process. When the upper die 10 and the lower die 20 are closed, the punch 102 uses its lower end as a fulcrum and utilizes the pressure generated by the closing of the molds to apply a downward pushing force to the first force transmission block 205 to push the first force transmission block 205 downward, and the second force transmission block 206 converts the force applied by the punch 102 into the rotational power of the second force transmission block 206, and the rotation of the second force transmission block 206 further drives the upward movement of the ejection block 202, and finally realizes the rapid switching of the ejection block 202 from the separation position to the pressing position, so that the ejection block 202 flattens the flattened section 302 of the product 30 to be extruded.

[0043] like Figures 5 to 11 As shown, in this embodiment, the punch 102 includes a base 1021, and the base 1021 protrudes outward to form an extrusion portion 1022. The extrusion portion 1022 protrudes from the surface of the upper mold 10, so that at the moment when the upper mold 10 and the lower mold 20 are in mold closing, the extrusion portion 1022 can accurately form a close contact with the first force transmission block 205 in the lower mold 20. When the upper mold 10 and the lower mold 20 are in mold closing, the extrusion portion 1022 abuts against the first force transmission block 205. In addition, the width of the extrusion portion 1022 is smaller than the width of the base 1021, so that the extrusion portion 1022 can act more concentratedly on the first force transmission block 205 when applying pressure, ensuring accurate docking with the first force transmission block 205, and avoiding interference or misalignment problems caused by excessive size.

[0044] like Figures 5 to 11As shown, in this embodiment, a first elastic member 207 is further provided in the lower die 20, a mounting groove 2021 is provided on the ejecting block 202, at least a portion of the first elastic member 207 is provided in the mounting groove 2021, one end of the first elastic member 207 is connected to the ejecting block 202, and the other end of the first elastic member 207 is connected to the lower die 20 through a connecting member, so that the ejecting block 202 moves along with the second force transmission block 206. When the upper die 10 and the lower die 20 are molded, the punch 102 moves downward, the punch 102 pushes the first force transmission block 205 to move downward, the first force transmission block 205 pushes the first abutment portion 2062 of the second force transmission block 206 to move downward, and the second abutment portion 2063 of the second force transmission block 206 moves upward, the first elastic member 207 is compressed, so that the ejecting block 202 flattens the flattening section 302 of the product 30 to be extruded. When the upper die 10 and the lower die 20 are opened, the punch 102 moves upward, the first force transmission block 205 moves upward, the first abutment portion 2062 of the second force transmission block 206 moves upward, the second abutment portion 2063 of the second force transmission block 206 moves downward, and the first elastic member 207 recovers, so that the ejecting block 202 moves downward.

[0045] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0046] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An extrusion die, comprising an upper die and a lower die arranged in an upper and lower position, characterized in that: The upper die is provided with a stripping insert, the lower die is provided with an inclined slide block and a material ejection block, and the material ejection block can be switched between a pressing position and a separation position; When the ejecting block is in the separated position, the ejecting block does not contact the product to be extruded, and the stripping insert cooperates with the inclined slider to clamp the curved section of the product to be extruded; When the ejecting block is in the pressing position, the ejecting block flattens the flattened section of the product to be extruded.

2. The extrusion die according to claim 1, characterized in that: A first force transmission block is arranged in the lower mold, a second force transmission block is arranged below the first force transmission block, and the first force transmission block abuts against one end of the second force transmission block, and the ejecting block abuts against the other end of the second force transmission block; When the first force transmission block moves downward, it drives the second force transmission block to rotate along its own central axis, so that the lifting block moves upward, so as to switch the lifting block from the separation position to the pressing position.

3. The extrusion die according to claim 2, characterized in that: A punch is also provided in the upper die, and the position of the punch corresponds to that of the first force transmission block. When the upper die and the lower die are closed, the punch pushes the first force transmission block to move downward.

4. The extrusion die according to claim 3, characterized in that: The punch includes a base portion, which protrudes outward to form an extrusion portion. When the upper die and the lower die are clamped, the extrusion portion abuts against the first force transmission block.

5. The extrusion die according to claim 4, characterized in that: The extrusion portion has a width smaller than that of the base portion.

6. The extrusion die according to claim 2, characterized in that: The middle of the top of the second force transmission block protrudes outward to form a rotating part, and the rotating part is connected to the lower mold through a rotating shaft. The first abutment part and the second abutment part are respectively provided at both ends of the rotating part. The bottom of the first force transmission block abuts against the first abutment part, and the bottom of the top material block abuts against the second abutment part.

7. The extrusion die according to claim 1, characterized in that: A first elastic member is also provided in the lower mold, one end of the first elastic member is connected to the ejecting block, and the other end of the first elastic member is connected to the lower mold via a connecting member.

8. The extrusion die according to claim 7, characterized in that: The lifting block is provided with a mounting groove, and at least a portion of the first elastic member is disposed in the mounting groove.

9. The extrusion die according to claim 1, characterized in that: A material ejection pin is arranged at the bottom of the inclined sliding block, and a second elastic member is arranged at the bottom of the material ejection pin to facilitate separation of the product from the inclined sliding block.

10. The extrusion die according to claim 1, characterized in that: The stripping insert is provided with a bending groove, and the inclined sliding block is correspondingly provided with a bending portion. When the ejecting block is in the separation position, the bending groove cooperates with the bending portion to clamp the bending section of the product to be extruded.

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