Mold closing unit and injection molding machine with same

Abstract

The mold closing unit comprises a base, a second fixing frame and a first fixing frame are installed on the two sides of the top end of the base respectively, a second oil cylinder is installed on one side of the second fixing frame, a second movable mold plate is installed at the telescopic end of the second oil cylinder, and a second movable mold plate is installed at the telescopic end of the second oil cylinder. And a second movable mold plate is mounted on the side surface of the second movable mold plate. The mold rotating table capable of rotating is arranged, the fixed mold plates matched with the movable mold plates can be changed every time the mold rotating table rotates, so that the rear molds of the two fixed mold plates and the movable mold plates are alternately closed, the two movable mold plates oppositely move from the two sides and are closed with the corresponding fixed mold plate on the mold rotating table, and the fixed mold plates work in turn. When one fixed mold plate is matched with the corresponding movable mold plate for injection molding, the other fixed mold plate is used for taking pieces, and piece taking and injection are synchronous. And therefore, an alternate and synchronous working mode is creatively realized, the machine efficiency and the yield are improved, and the utilization rate of the mold is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, and in particular to a clamping unit and an injection molding machine having the clamping unit. Background Art

[0002] Thermoplastics or thermosetting plastics can be processed into plastic products of various shapes through plastic molding molds and various main molding equipment. These molding equipment mainly include injection molding machines, which can be divided into vertical, horizontal and all-electric types according to different arrangements. Injection molding machine is a very important molding equipment. It can heat the plastic to melt it, and then apply high pressure to the molten plastic to make it eject and fill the mold cavity. Therefore, injection molding machine is also called injection molding machine or injection machine in industrial production. In many factories, injection molding machine has another common name, that is, beer machine (píjī). The plastic products produced by injection molding machine are called beer parts.

[0003] The working principle of the injection molding machine is to inject thermoplastics or thermosetting plastics into the plastic molding mold by heating and high pressure to form plastic products of various shapes. According to the arrangement of the injection device and the clamping device, injection molding machines can be divided into vertical, horizontal, and vertical-horizontal composite types. The injection device and clamping device of the vertical injection molding machine are arranged vertically, while the injection device and clamping device of the horizontal injection molding machine are arranged horizontally. The vertical-horizontal composite injection molding machine combines the advantages of vertical and horizontal types and is suitable for more complex production needs. Regardless of the type of injection molding machine, their core function is to inject plastic raw materials into the mold by heating and high pressure to produce plastic products of various shapes and sizes.

[0004] In the prior art, after the mold is opened, the mold clamping unit of the injection molding needs to use an ejector mechanism or a manipulator to remove the workpiece, which consumes downtime and has low processing efficiency.

[0005] Therefore, how to provide a clamping unit and an injection molding machine having the clamping unit to solve the problems existing in the prior art is of great significance to its application. Summary of the invention

[0006] In view of this, an object of the present application is to provide a clamping unit and an injection molding machine having the clamping unit to solve the problem.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A mold clamping unit and an injection molding machine having the mold clamping unit, the mold clamping unit comprising a base, a second fixing frame and a first fixing frame are respectively installed on both sides of the top of the base, a second oil cylinder is installed on one side of the second fixing frame, a second movable platen is installed on the telescopic end of the second oil cylinder, a second movable platen is installed on the side of the second movable platen, a first oil cylinder is installed on one side of the first fixing frame, a first movable mold base is installed on the telescopic end of the first oil cylinder, and a first movable mold base is fixedly connected to one side of the first movable mold base;

[0009] A rotating shaft is installed and connected in the middle of the top of the base, a rotating die table is fixedly connected to the top of the rotating shaft, four fixed die plates are installed on the side of the rotating die table, and a rotating drive mechanism is installed at the bottom of the base.

[0010] Preferably, a support roller is installed at the top end of the base, and an annular support frame is installed at the bottom end of the rotary mold table, and the support roller is rollingly connected to the annular support frame.

[0011] Preferably, the rotary drive mechanism includes a cross, a rotating disk, a rotating shaft, and a one-way drive pulley; the cross is mounted on the bottom end of the rotating shaft, the top end of the rotating shaft is rotatably connected to the base, the bottom end of the rotating shaft is fixedly connected to the rotating disk, and the one-way drive pulley is transmission-connected to the middle part of the rotating shaft.

[0012] Preferably, the four corners at the bottom of the cross are fixedly connected with sliding columns, and the top side of the rotating disk is provided with a sliding bar, and the sliding bar is slidably connected with the four sliding columns.

[0013] Preferably, a rhombus is provided on one side of the top end of the rotating disk, an arc-shaped concave surface is provided on the outer side of the rhombus, and a shifting protrusion is provided on the outermost middle part of the rhombus.

[0014] Preferably, a strip groove is provided between the rhombus body and the sliding bar, and an arc-shaped convex surface is provided on the outer side of the annular support frame close to the strip groove, and the width of the strip groove is equal to the diameter of the sliding column.

[0015] Preferably, a pulley frame is fixedly connected to the bottom end of the base, the pulley frame is rotatably connected to a transmission pulley, and the transmission pulley is connected to the one-way transmission pulley via a transmission belt.

[0016] Preferably, a slide groove is provided on the surface of the base, a rack is fixedly connected to the bottom end of the first movable mold seat, a meshing gear is rotatably connected inside the slide groove, and the meshing gear is meshingly connected to the rack.

[0017] Preferably, the meshing gear is coaxially connected to the helical gear 2, the transmission pulley is coaxially connected to the helical gear 1, and the helical gear 2 is meshingly connected to the helical gear 1.

[0018] An injection molding machine, comprising a clamping unit; and also comprising a second injection molding mechanism, a second driving mechanism, a first frame, a first driving mechanism, a second frame, and a second frame, wherein the second driving mechanism is mounted on the top of the second frame, the second injection molding mechanism is mounted on the movable end of the second driving mechanism, the first driving mechanism is mounted above the first frame, the second frame is mounted on the movable end of the first driving mechanism, and the second injection molding mechanism and the second frame are respectively mounted on both sides of the clamping unit.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is provided with a rotatable rotary mold table. Each time the rotary mold table is rotated, the fixed mold plate that cooperates with the movable mold plate will change, so that the rear molds of the two fixed mold plates are alternately molded with the movable mold plate. The two movable mold plates move toward each other from both sides and mold with the corresponding fixed mold plate on the rotary mold table. The fixed mold plates work in turn. When one fixed mold plate cooperates with its corresponding movable mold plate for injection molding, the other fixed mold plate is taking out the parts, and the taking out and injection are synchronized. Thus, the alternating and synchronous working mode is creatively realized, which not only improves the machine efficiency and output, but also improves the utilization rate of the mold.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0022] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the mold clamping unit in the present invention;

[0026] Figure 3 It is a top view of the structure of the clamping unit in the present invention;

[0027] Figure 4 It is a structural diagram of the rotating disk in the present invention;

[0028] Figure 5 It is a structural diagram of the gear mechanism in the present invention.

[0029] In the figure: 1, base; 2, support roller; 3, rotating shaft; 4, cross; 5, rotating disk; 6, rotating shaft; 7, one-way drive pulley; 8, drive belt; 9, drive pulley; 10, meshing gear; 11, first fixed frame; 12, first oil cylinder; 13, first movable mold seat; 14, first movable mold plate; 15, fixed mold plate; 16, rotating mold table; 17, second movable mold plate; 18, second movable mold plate; 19, second fixed frame; 20, second oil cylinder ; 21. annular support frame; 22. slide groove; 23. sliding column; 24. arc convex surface; 25. strip groove; 26. arc concave surface; 27. toggle protrusion; 28. rhombus; 29. ​​sliding bar; 30. bevel gear 1; 31. bevel gear 2; 32. rack; 33. second injection molding mechanism; 34. second driving mechanism; 35. first frame; 36. first driving mechanism; 37. first injection molding mechanism; 38. second frame; 39. pulley frame. DETAILED DESCRIPTION

[0030] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0031] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0033] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0034] See also Figure 1-5 The present invention provides a technical solution of a clamping unit and an injection molding machine having the clamping unit:

[0035] The mold clamping unit includes a base 1, a second fixing frame 19 and a first fixing frame 11 are respectively installed on both sides of the top of the base 1, a second oil cylinder 20 is installed on one side of the second fixing frame 19, a second movable plate 18 is installed on the telescopic end of the second oil cylinder 20, a second movable plate 17 is installed on the side of the second movable plate 18, a first oil cylinder 12 is installed on one side of the first fixing frame 11, a first movable mold base 13 is installed on the telescopic end of the first oil cylinder 12, and a first movable mold base 14 is fixedly connected to one side of the first movable mold base 13;

[0036] A rotating shaft 3 is installed and connected in the middle of the top of the base 1, and a rotary die table 16 is fixedly connected to the top of the rotating shaft 3. Four fixed die plates 15 are installed on the side of the rotary die table 16. A rotating drive mechanism is installed at the bottom of the base 1.

[0037] A support roller 2 is installed at the top end of the base 1 , and an annular support frame 21 is installed at the bottom end of the rotary die table 16 . The support roller 2 is rollingly connected to the annular support frame 21 .

[0038] The rotary drive mechanism includes a cross 4, a rotating disk 5, a rotating shaft 6, and a one-way transmission pulley 7; the cross 4 is installed at the bottom end of the rotating shaft 3, the top end of the rotating shaft 6 is rotatably connected to the base 1, the bottom end of the rotating shaft 6 is fixedly connected to the rotating disk 5, and the one-way transmission pulley 7 is transmission-connected to the middle part of the rotating shaft 6.

[0039] The four corners at the bottom of the cross 4 are all fixedly connected with sliding columns 23 , and the top side of the rotating disk 5 is provided with a sliding bar 29 , which is slidably connected with the four sliding columns 23 .

[0040] A rhombus 28 is disposed on one side of the top of the rotating disk 5 , an arc-shaped concave surface 26 is disposed on the outer side of the rhombus 28 , and a shifting protrusion 27 is disposed at the outermost middle portion of the rhombus 28 .

[0041] A strip groove 25 is provided between the rhombus body 28 and the sliding bar 29 , and an arcuate convex surface 24 is provided on the outer side of the annular support frame 21 close to the strip groove 25 . The width of the strip groove 25 is equal to the diameter of the sliding column 23 .

[0042] The bottom end of the base 1 is fixedly connected with a pulley frame 39, and the pulley frame 39 is rotatably connected with a transmission pulley 9. The transmission pulley 9 is connected to the one-way transmission pulley 7 through a transmission belt 8.

[0043] A slide groove 22 is provided on the surface of the base 1 , a rack 32 is fixedly connected to the bottom end of the first movable mold base 13 , a meshing gear 10 is rotatably connected inside the slide groove 22 , and the meshing gear 10 is meshedly connected to the rack 32 .

[0044] The meshing gear 10 is coaxially connected to the bevel gear 2 31 , and the transmission pulley 9 is coaxially connected to the bevel gear 1 30 , and the bevel gear 2 31 is meshingly connected to the bevel gear 1 30 .

[0045] The rotary drive mechanism in the present invention is driven by the mold opening power. When the mold is opened, the first oil cylinder 12 drives the first movable mold base 13 to retreat. At this time, the first movable mold base 13 drives the rack 32 to slide, and the rack 32 drives the meshing gear 10 to rotate. The meshing gear drives the transmission pulley 9 to rotate through the bevel gear 2 31 and the bevel gear 1 30. The transmission pulley 9 drives the one-way transmission pulley 7 to rotate 360 ​​degrees through the transmission belt 8. The transmission pulley 7 drives the rotating disk 5 to rotate one circle through the rotating shaft 6. When the rotating disk 5 rotates, the four sliding columns 23 always slide with the sliding bar 29. When the four The outer sliding post 23 of the sliding posts 23 contacts the toggle protrusion 27, and then the outer sliding post 23 is toggled. At this time, the other sliding post 23 on the outer side slides to the inner side of the rhombus 28 through the strip groove 25, and the sliding post 23 on the symmetrical side of the sliding post 23 slides to the outside through the other strip groove 25, so that the entire cross 4 completes a 90° rotation. The cross 4 drives the rotary mold table 16 to rotate 90 degrees through the rotating shaft 3 to switch the fixed mold plate 15. The molded injection molded part rotates to the front and rear sides to facilitate unloading. The fixed mold plate 15 to be molded faces the two movable mold plates, and the molded injection molding is about to be completed.

[0046] An injection molding machine includes a mold clamping unit; a second injection molding mechanism 33, a second driving mechanism 34, a first frame 35, a first driving mechanism 36, a second frame 37 and a second frame 38, wherein the second driving mechanism 34 is mounted on the top of the second frame 38, the second injection molding mechanism 33 is mounted on the movable end of the second driving mechanism 34, the first driving mechanism 36 is mounted above the first frame 35, the second frame 37 is mounted on the movable end of the first driving mechanism 36, and the second injection molding mechanism 33 and the second frame 37 are respectively mounted on both sides of the mold clamping unit.

[0047] In specific use, when the mold is opened, the first oil cylinder 12 drives the first movable mold base 13 to retreat, and the first movable mold base 13 drives the rack 32 to slide, and the rack 32 drives the meshing gear 10 to rotate, and the meshing gear drives the transmission pulley 9 to rotate through the bevel gear 2 31 and the bevel gear 1 30, and the transmission pulley 9 drives the one-way transmission pulley 7 to rotate 360 ​​degrees through the transmission belt 8, and the transmission pulley 7 drives the rotating disk 5 to rotate one circle through the rotating shaft 6. When the rotating disk 5 rotates, the four sliding columns 23 always slide with the sliding bar 29. When the sliding column 23 on the outer side of the four sliding columns 23 contacts the toggle protrusion 27, and then the outer sliding column 23 is toggled, at this time, the other outer sliding column 23 The first sliding column 23 slides to the inner side of the rhombus 28 through the strip groove 25, and the sliding column 23 on the symmetrical side of the sliding column 23 slides to the outer side through another strip groove 25, so that the entire cross 4 completes a 90° rotation. The cross 4 drives the rotary mold table 16 to rotate 90 degrees through the rotating shaft 3 to switch the fixed mold plate 15. The molded injection molded parts are rotated to the front and rear sides for easy material removal. The fixed mold plate 15 to be molded faces the two movable mold plates, and the molded injection molding is about to be completed. Each time the fixed mold plate that cooperates with the movable mold plate is rotated, the rear mold of the two fixed mold plates is alternately molded with the movable mold plate. The two movable mold plates move toward each other from both sides and mold with the corresponding fixed mold plate on the rotary mold table. The fixed mold plates work in turn. When one fixed mold plate cooperates with its corresponding movable mold plate for injection molding, the other fixed mold plate is used to pick up the parts, and the picking up and injection are synchronized. Thus, the alternating and synchronous working mode is creatively realized, which not only improves the machine efficiency and output, but also improves the utilization rate of the mold.

[0048] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Within the spirit and principle of the present invention, any change, modification, replacement, integration and parameter change of these embodiments by conventional substitution or capable of achieving the same function without departing from the principle and spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A clamping unit and an injection molding machine having the clamping unit, characterized in that: The clamping unit comprises a base (1), a second fixed frame (19) and a first fixed frame (11) are respectively mounted on both sides of the top of the base (1), a second oil cylinder (20) is mounted on one side of the second fixed frame (19), a second movable platen (18) is mounted on the telescopic end of the second oil cylinder (20), a second movable platen (17) is mounted on the side of the second movable platen (18), a first oil cylinder (12) is mounted on one side of the first fixed frame (11), a first movable die seat (13) is mounted on the telescopic end of the first oil cylinder (12), and a first movable die seat (14) is fixedly connected to one side of the first movable die seat (13); A rotating shaft (3) is installed and connected in the middle of the top of the base (1), the top of the rotating shaft (3) is fixedly connected to a rotating die table (16), four fixed die plates (15) are installed on the side of the rotating die table (16), and a rotating drive mechanism is installed at the bottom of the base (1).

2. A clamping unit according to claim 1, characterized in that: A support roller (2) is installed at the top end of the base (1), an annular support frame (21) is installed at the bottom end of the rotary die table (16), and the support roller (2) is rollingly connected to the annular support frame (21).

3. A clamping unit according to claim 2, characterized in that: The rotary drive mechanism comprises a cross (4), a rotating disk (5), a rotating shaft (6), and a one-way transmission pulley (7); the cross (4) is mounted on the bottom end of the rotating shaft (3), the top end of the rotating shaft (6) is rotatably connected to the base (1), the bottom end of the rotating shaft (6) is fixedly connected to the rotating disk (5), and the one-way transmission pulley (7) is transmission-connected to the middle of the rotating shaft (6).

4. A clamping unit according to claim 3, characterized in that: The four corners at the bottom of the cross (4) are all fixedly connected with sliding columns (23), and the top side of the rotating disk (5) is provided with a sliding bar (29), and the sliding bar (29) is slidably connected with the four sliding columns (23).

5. A clamping unit according to claim 4, characterized in that: A rhombus (28) is arranged on one side of the top end of the rotating disk (5), an arc-shaped concave surface (26) is arranged on the outer side of the rhombus (28), and a shifting protrusion (27) is arranged on the outermost middle part of the rhombus (28).

6. A mold clamping unit as described in claim 5, wherein a strip groove (25) is arranged between the rhombus body (28) and the sliding bar (29), and an arc-shaped convex surface (24) is arranged on the outer side of the annular support frame (21) close to the strip groove (25), and the width of the strip groove (25) is equal to the diameter of the sliding column (23).

7. A clamping unit according to claim 6, characterized in that: The bottom end of the base (1) is fixedly connected to a pulley frame (39), and the pulley frame (39) is rotatably connected to a transmission pulley (9), and the transmission pulley (9) is connected to the one-way transmission pulley (7) through a transmission belt (8).

8. A clamping unit according to claim 7, characterized in that: A slide groove (22) is provided on the surface of the base (1); a rack (32) is fixedly connected to the bottom end of the first movable mold base (13); a meshing gear (10) is rotatably connected inside the slide groove (22); and the meshing gear (10) is meshingly connected to the rack (32).

9. A clamping unit according to claim 8, characterized in that: The meshing gear (10) is coaxially connected to the bevel gear 2 (31), and the transmission pulley (9) is coaxially connected to the bevel gear 1 (30), and the bevel gear 2 (31) is meshingly connected to the bevel gear 1 (30).

10. An injection molding machine according to claim 9, characterized in that: The injection molding machine comprises the clamping unit described in any one of claims 1 to 9; and also comprises a second injection molding mechanism (33), a second driving mechanism (34), a first frame (35), a first driving mechanism (36), a second frame (37) and a second frame (38), wherein the second driving mechanism (34) is mounted on the top of the second frame (38), the second injection molding mechanism (33) is mounted on the movable end of the second driving mechanism (34), the first driving mechanism (36) is mounted above the first frame (35), the second frame (37) is mounted on the movable end of the first driving mechanism (36), and the second injection molding mechanism (33) and the second frame (37) are respectively mounted on both sides of the clamping unit.

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