Workpiece injection molding demolding device

Abstract

The utility model relates to the technical field of injection molding, in particular to a workpiece injection molding demolding device which comprises two sets of device frames and two sets of mounting plates, the mounting plates are arranged between the device frames, four sets of guide columns are fixedly connected between the device frames, the mounting plates are arranged on the peripheral end faces of the guide columns in a sliding and sleeving mode, and the guide columns are arranged on the mounting plates. A mounting groove is formed in the mounting plate, and a forming assembly is fixedly connected to the interior of the mounting groove through cooperation of bolts; the forming assembly comprises a movable mold and a fixed mold, the movable mold and the fixed mold are mutually clamped to form a mold, a plurality of groups of abutting blocks are fixedly connected in the movable mold, and a mold pushing assembly matched with the abutting blocks is arranged in the fixed mold. And the stability of the device is improved, and the workpiece cannot be left in the fixed die due to shrinkage.

Description

Technical Field

[0001] The utility model relates to the field of technical injection molding, in particular to a demoulding device for injection molding of a workpiece. Background Art

[0002] Chinese patent number "CN212498712U" discloses an injection mold molding structure, including a device body and a fixed frame, the top surface of the device body is provided with a fixed base, and the top of the fixed base is provided with a sliding plate, the injection mold pushes the movable mold downward by a first electric telescopic rod to make it fit with the fixed mold, and performs injection molding through the injection port, and the molded injection workpiece exerts an upward elastic force under the elastic action of the spring to lift the demolding plate, and the mold is demolded for the first time, and then the second electric telescopic rod at the bottom of the fixed mold pushes the top plate to lift the injection molded workpiece in the mold to perform secondary demolding, the injection mold adopts a split demolding method, which can not only demold the mold more conveniently and efficiently, but also avoids damage to the injection molded workpiece due to excessive force in the traditional direct demolding process.

[0003] The device can be used for the injection molding of workpieces. It adopts a split demoulding method to demould the mold conveniently and efficiently, avoiding damage to the injection-molded workpiece. However, the device does not have an ejection mechanism. When processing different workpieces, the plastic parts may remain in the fixed mold due to shrinkage, which makes the demoulding work impossible. Therefore, improvements are proposed. Utility Model Content

[0004] The utility model aims to solve the problem that the prior art has no ejection mechanism, and when facing different workpieces, the plastic parts may remain in the fixed mold due to shrinkage, thus making it impossible to perform the demoulding work, and proposes a workpiece injection molding demoulding device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A workpiece injection molding demoulding device is designed, comprising two sets of device frames and two sets of mounting plates, wherein the mounting plates are arranged between the device frames, four sets of guide columns are fixedly connected between the device frames, the mounting plates are slidably sleeved on the outer end surfaces of the guide columns, the mounting plates are provided with mounting grooves inside, and the inside of the mounting grooves is fixedly connected with a molding component through the cooperation of bolts;

[0007] The molding assembly includes a movable mold and a fixed mold. The movable mold and the fixed mold are engaged with each other to form a mold. The interior of the movable mold is fixedly connected to multiple groups of abutment blocks. The interior of the fixed mold is provided with a push mold assembly that cooperates with the abutment blocks.

[0008] Preferably, the ejection mold assembly includes a limiting groove opened inside the fixed mold, the inside of the limiting groove is slidably connected with a ejection mold part, the outer end surface of the ejection mold part movably abuts the abutment block, and the inside of the limiting groove is provided with a second elastic part that elastically abuts the ejection mold part to move outward.

[0009] Preferably, the mounting plate located on one side of the fixed mold is fixedly connected to the device frame by bolts, an injection through hole is provided inside the fixed mold, and an injection tube that cooperates with the injection through hole is fixedly connected inside the device frame.

[0010] Preferably, an ejector groove is provided inside the movable mold, an ejector plate is movably engaged inside the ejector groove, an ejector member penetrating the mounting plate is fixedly connected to the outer end surface of the ejector plate, and an ejector column is provided below the ejector member.

[0011] Preferably, the ejector column is fixedly connected to the device frame by means of bolts, and the upper end surface of the ejector column movably abuts against the lower end surface of the ejector member.

[0012] Preferably, a first elastic member is sleeved on the outer end surface of the ejection member, and the elastic member elastically abuts against the ejection member to move outward.

[0013] Preferably, a plurality of groups of cylinders are fixedly mounted on the inner end surface of the device frame, and the output ends of the cylinders are drivingly connected to the mounting plate located on one side of the movable mold.

[0014] The utility model provides a demoulding device for injection molding of workpieces, which has the beneficial effects of: a complete mold can be formed by the mutual cooperation of a movable mold and a fixed mold, and the mold is injected with the cooperation of an injection through hole and an injection tube. After the workpiece is cooled and formed, the movable mold is driven to separate from the fixed mold by a cylinder, and at this time, the mold pusher pushes the workpiece to separate from the fixed mold under the action of the second elastic member, so that the workpiece is taken away by the movable mold, and the ejector column abuts against the ejector member, and the first elastic member is compressed, so that the ejector plate can eject the workpiece, so that the demoulding work of the workpiece is completed, the stability of the device is improved, and the workpiece will not be left in the fixed mold due to shrinkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a workpiece injection molding demoulding device proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional structure diagram of a demoulding device for injection molding of a workpiece proposed by the utility model;

[0017] Figure 3 A workpiece injection molding demoulding device proposed by the utility model Figure 2 A partial enlarged view of the middle part;

[0018] Figure 4 A workpiece injection molding demoulding device proposed by the utility model Figure 2 A partial enlarged view of point B in the middle;

[0019] Figure 5 This is a schematic diagram of the exploded structure of a workpiece injection molding demoulding device proposed by the utility model;

[0020] Figure 6 The utility model discloses a structural schematic diagram of a molding component of a workpiece injection molding demoulding device.

[0021] In the figure: 1. device frame; 2. mounting plate; 201. mounting groove; 3. guide column; 4. movable mold; 401. ejector groove; 402. abutment block; 5. fixed mold; 501. limit groove; 502. injection through hole; 6. injection tube; 7. ejector column; 8. cylinder; 9. ejector member; 901. ejector plate; 10. first elastic member; 11. ejector member; 12. second elastic member. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-6 , a demoulding device for injection molding of workpieces, comprising two sets of device frames 1 and two sets of mounting plates 2, the mounting plates 2 are arranged between the device frames 1, four sets of guide columns 3 are fixedly connected between the device frames 1, the mounting plates 2 are slidably sleeved on the outer end surfaces of the guide columns 3, the interior of the mounting plates 2 is provided with mounting grooves 201, the interior of the mounting grooves 201 is fixedly connected with a molding component by the cooperation of bolts, the mounting plates 2 can be fixed by the cooperation of the device frames 1 and the guide columns 3, the device frames 1 can be fixedly installed inside the mechanical equipment on the left and right sides, the demoulded workpiece will fall down and be collected by itself, and then the mold is fixed by opening the mounting grooves 201, which is convenient for disassembly and replacement, can process and produce different workpieces, and improves the use scenarios of the device;

[0024] The molding assembly includes a movable mold 4 and a fixed mold 5. The movable mold 4 and the fixed mold 5 are engaged with each other to form a mold. The interior of the movable mold 4 is fixedly connected to multiple groups of abutment blocks 402. The interior of the fixed mold 5 is provided with a push mold assembly that cooperates with the abutment blocks 402. A complete mold can be formed by the movable mold 4 and the fixed mold 5. The cooperation between the abutment blocks 402 and the push mold assembly facilitates the demolding work and improves the demolding efficiency.

[0025] The ejection die assembly includes a limiting groove 501 opened inside the fixed die 5, and the internal sliding connection of the limiting groove 501 is provided with an ejection die member 11, and the outer end surface of the ejection die member 11 movably abuts against the abutment block 402, and the internal part of the limiting groove 501 is provided with a second elastic member 12 which elastically abuts against the ejection die member 11 to move outward. The second elastic member 12 abuts against the ejection die member 11, so that the ejection die member 11 moves outward, pushing the workpiece away from the fixed die 5, and having better stability.

[0026] The mounting plate 2 located on one side of the fixed mold 5 is fixedly connected to the device frame 1 by means of bolts. An injection through hole 502 is provided inside the fixed mold 5. An injection tube 6 cooperating with the injection through hole 502 is fixedly connected inside the device frame 1. The injection molding work of the workpiece can be completed through the injection through hole 502 and the injection tube 6.

[0027] An ejector groove 401 is provided inside the movable mold 4, and an ejector plate 901 is movably engaged inside the ejector groove 401. An ejector member 9 penetrating the mounting plate 2 is fixedly connected to the outer end surface of the ejector plate 901, and an ejector column 7 is provided below the ejector member 9. The ejector plate 901 is fixed by providing the ejector groove 401, which does not affect the molding of the workpiece and facilitates the demoulding of the workpiece.

[0028] The ejector column 7 is fixedly connected to the device frame 1 by means of bolts, and the upper end surface of the ejector column 7 movably abuts against the lower end surface of the ejector member 9, so that the ejector column 7 abuts against the ejector member 9 to complete the demoulding of the workpiece.

[0029] A first elastic member 10 is sleeved on the outer end surface of the ejection member 9, and the elastic member elastically abuts the ejection member 9 to move outward. The first elastic member 10 abuts against the ejection member 9, so that the ejection plate 901 is engaged in the ejection groove 401 without interference from external force.

[0030] A plurality of groups of cylinders 8 are fixedly mounted on the inner end surface of the device frame 1, and the output ends of the cylinders 8 are transmission-connected to the mounting plate 2 located on one side of the movable mold 4, so that the movable mold 4 and the mounting plate 2 can be driven to move by the cylinders 8.

[0031] Working mode: When working, the cylinder 8 will drive the mounting plate 2 and the movable mold 4 to move. When the movable mold 4 is engaged with the fixed mold 5, a complete mold can be formed. At this time, the abutment block 402 will abut the push mold piece 11 to prevent it from moving. The injection through hole 502 and the injection tube 6 are used to cooperate with the mold for injection molding. After cooling and molding, the movable mold 4 is driven by the cylinder 8 to separate from the fixed mold 5. At this time, under the action of the second elastic member 12, the push mold piece 11 will push the workpiece to separate from the fixed mold 5, and the workpiece will be taken away by the movable mold 4, and then the ejector column 7 will abut the ejector piece 9, thereby completing the complete demolding work, which greatly improves the stability of demolding and prevents the workpiece from remaining in the fixed mold 5 due to shrinkage.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A workpiece injection molding demoulding device, comprising two sets of device frames (1) and two sets of mounting plates (2), characterized in that: The mounting plate (2) is arranged between the device frames (1), four groups of guide columns (3) are fixedly connected between the device frames (1), the mounting plate (2) is slidably sleeved on the outer end surfaces of the guide columns (3), a mounting groove (201) is provided inside the mounting plate (2), and a forming component is fixedly connected inside the mounting groove (201) by means of bolts; The molding assembly comprises a movable mold (4) and a fixed mold (5); the movable mold (4) and the fixed mold (5) are engaged with each other to form a mold; a plurality of groups of abutment blocks (402) are fixedly connected inside the movable mold (4); and a push mold assembly that cooperates with the abutment blocks (402) is arranged inside the fixed mold (5).

2. A workpiece injection molding demoulding device according to claim 1, characterized in that: The ejection mold assembly comprises a limiting groove (501) provided inside the fixed mold (5); a ejection mold member (11) is slidably connected inside the limiting groove (501); an outer end surface of the ejection mold member (11) movably abuts against the abutment block (402); and a second elastic member (12) is provided inside the limiting groove (501) for elastically abutting against the ejection mold member (11) to move outward.

3. A workpiece injection molding demoulding device according to claim 1, characterized in that: The mounting plate (2) located on one side of the fixed mold (5) is fixedly connected to the device frame (1) by means of bolts, an injection molding through hole (502) is provided inside the fixed mold (5), and an injection molding tube (6) that cooperates with the injection molding through hole (502) is fixedly connected inside the device frame (1).

4. A workpiece injection molding demoulding device according to claim 1, characterized in that: An ejection groove (401) is provided inside the movable mold (4), an ejection plate (901) is movably engaged inside the ejection groove (401), an ejection piece (9) penetrating the mounting plate (2) is fixedly connected to the outer end surface of the ejection plate (901), and an ejection column (7) is provided below the ejection piece (9).

5. A workpiece injection molding demoulding device according to claim 4, characterized in that: The ejector column (7) is fixedly connected to the device frame (1) by means of bolts, and the upper end surface of the ejector column (7) movably abuts against the lower end surface of the ejector member (9).

6. A workpiece injection molding demoulding device according to claim 5, characterized in that: A first elastic member (10) is sleeved on the outer end surface of the ejection member (9), and the elastic member elastically abuts against the ejection member (9) to move outward.

7. A workpiece injection molding demoulding device according to claim 1, characterized in that: A plurality of groups of cylinders (8) are fixedly mounted on the inner end surface of the device frame (1), and the output ends of the cylinders (8) are drivingly connected to the mounting plate (2) located on one side of the movable mold (4).

Images