Injection molding machine capable of quickly replacing injection molding head

Abstract

The utility model discloses an injection molding machine capable of quickly replacing an injection molding head, which comprises a base and an injection molding head body, a fixed mold is fixedly arranged at the upper end of the base, a plastic melting bin is arranged above the fixed mold, the lower end of the plastic melting bin is connected with a connecting pipe, a slidable upper fixed seat is arranged on the lower side of the connecting pipe, and a fixed pipe is fixedly arranged at the upper end of the fixed mold. A detachable lower fixing seat is arranged at the upper end of the fixing pipe, the injection molding head body is detachably connected between the upper fixing seat and the lower fixing seat, a sliding groove is formed in the inner side of the connecting pipe, a plurality of connecting springs are fixedly arranged in the sliding groove, a limiting protruding ring is fixedly arranged on the inner side of the upper fixing seat, an adjusting groove is formed in the inner side of the connecting pipe, and a clamping ring is fixedly arranged at the upper end of the lower fixing seat. A connecting column is fixedly arranged at the lower end of the lower fixing seat, a plurality of fixing holes are formed in the outer side of the connecting column, a plurality of fixing pins are arranged on the outer side of the fixing pipe in a penetrating mode, and a reset spring is arranged on each fixing pin in a penetrating mode.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an injection molding machine capable of quickly replacing an injection molding head. Background Art

[0002] The injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It inserts the injection head into the mold to deliver plastic liquid for injection molding, and the injection molding is achieved through the injection head. When producing injection molded parts, the hot melt plastic needs to be fed into the mold through the injection head, and the hot melt plastic is cooled and shaped through two matching molds. However, the injection head is easily damaged after being used for a period of time. At the same time, the injection head and the injection molding machine are generally fixedly connected, resulting in the need to disassemble and replace the injection molding part of the injection molding machine as a whole after the injection head is damaged, which increases the cost of using the injection molding machine. In response to the above problems, a solution is proposed below. Utility Model Content

[0003] The utility model aims to provide an injection molding machine which can quickly replace an injection molding head and has the advantage of convenient disassembly, assembly and replacement of the injection molding head.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] An injection molding machine with a quickly replaceable injection molding head comprises a base and an injection molding head body, wherein a fixed mold is fixedly arranged at the upper end of the base, a fixed plate is also fixedly arranged at the upper end of the base, a movable mold is arranged on one side of the fixed plate, and the movable mold cooperates with the fixed mold, an electric telescopic rod is installed on the other side of the fixed plate, the output shaft of the electric telescopic rod passes through the fixed plate and is fixedly connected to one side of the movable mold, a bracket is fixedly arranged at the upper end of the fixed mold, a molten plastic bin is installed on the inner side of the bracket, a connecting pipe is connected to the lower end of the molten plastic bin, a slidable upper fixed seat is arranged on the lower side of the connecting pipe, a fixed tube is fixedly arranged at the upper end of the fixed mold, a detachable lower fixed seat is arranged at the upper end of the fixed tube, and the injection molding head body is detachably connected between the upper fixed seat and the lower fixed seat.

[0006] Preferably, a slide groove is provided on the inner side of the connecting pipe, and a plurality of connecting springs are fixedly arranged in the slide groove. The top end of the upper fixed seat is passed through the connecting pipe and fixedly connected to the lower ends of the plurality of connecting springs. A limiting convex ring is provided on the inner side of the upper fixed seat, and the limiting convex ring abuts against the upper end of the injection head body. An adjusting groove is provided on the inner side of the connecting pipe, and the limiting convex ring is slidably located in the adjusting groove. A sealing ring is provided on the inner wall of the upper fixed seat, and the other side of the sealing ring fits with the outer wall of the injection head body.

[0007] Preferably, the upper end of the lower fixed seat is in conflict with the lower end of the injection head body, a clamping ring is fixedly provided on the upper end of the lower fixed seat, and the inner wall of the clamping ring is in contact with the outer side of the injection head body, a connecting column is fixedly provided at the lower end of the lower fixed seat, and the connecting column is located in a fixing tube, a plurality of fixing holes are arranged on the outer side of the connecting column, a plurality of fixing pins are passed through the outer side of the fixing tube, the top ends of the plurality of fixing pins are respectively located in the plurality of fixing holes, a reset spring is respectively passed through each of the fixing pins, and the reset spring is connected between the outer wall of the fixing tube and the tail end of the fixing pin.

[0008] Preferably, a plurality of guide posts are connected between the fixed plate and the fixed mold, and the movable mold can be slidably arranged on the plurality of guide posts.

[0009] The beneficial effects of the utility model are:

[0010] 1. By pushing the upper fixed seat upward, the upper fixed seat can be made to slide upward along the slide groove. At this time, several connecting springs are squeezed to generate elastic force, so that the upper end of the injection head body can be separated from the upper fixed seat, so as to facilitate the disassembly of the injection head body. After the injection head body is installed, the upper fixed seat is driven back to the initial position by the reset action of several connecting springs. At this time, the top of the injection head body is in contact with the limiting convex ring, and at the same time, the sealing ring can be used to increase the sealing between the upper fixed seat and the injection head body.

[0011] 2. By pulling several fixing pins, the top ends of the fixing pins can be disengaged from the fixing holes. At this time, the reset spring is stretched to generate elastic force, and then the lower fixing seat can be pushed upward to drive the connecting column to be pulled out of the fixing tube, so as to realize the rapid replacement of the injection head body. When the injection head body is reinstalled, the reset effect of the reset spring can drive several fixing pins to be pushed into the fixing holes again, so as to fix the connecting column and thus realize the fixed installation of the lower fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an embodiment;

[0013] Figure 2 It is a partial structural cross-sectional view of an embodiment.

[0014] 1. Base; 2. Injection head body; 3. Fixed mold; 4. Fixed plate; 5. Moving mold; 6. Electric telescopic rod; 7. Bracket; 8. Molding chamber; 9. Connecting pipe; 10. Upper fixing seat; 11. Fixed pipe; 12. Lower fixing seat; 13. Slide groove; 14. Connecting spring; 15. Limiting convex ring; 16. Adjusting groove; 17. Sealing ring; 18. Clamping ring; 19. Connecting column; 20. Fixing hole; 21. Fixing pin; 22. Reset spring; 23. Guide column. DETAILED DESCRIPTION

[0015] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0016] like Figure 1 to Figure 2 As shown, an injection molding machine capable of quickly replacing an injection molding head comprises a base 1 and an injection molding head body 2, a fixed mold 3 is fixedly arranged at the upper end of the base 1, a fixed plate 4 is also fixedly arranged at the upper end of the base 1, a movable mold 5 is arranged on one side of the fixed plate 4, and the movable mold 5 cooperates with the fixed mold 3, and an electric telescopic rod 6 is installed on the other side of the fixed plate 4, the output shaft of the electric telescopic rod 6 passes through the fixed plate 4, and is fixedly connected to one side of the movable mold 5, and the movable mold 5 can be driven to move forward and backward by the extension of the output shaft of the electric telescopic rod 6, so that the movable mold 5 can be combined with the fixed mold 3. A plurality of guide posts 23 are connected between the fixed plate 4 and the fixed mold 3, and the movable mold 5 can be slidably arranged on the plurality of guide posts 23, and when the movable mold 5 moves forward and backward, it can move forward and backward along the plurality of guide posts 23, so that the moving trajectory of the movable mold 5 can be made straighter and more stable, so that the position of the movable mold 5 combined with the movable mold 5 can be made more accurate to ensure the injection molding accuracy.

[0017] A bracket 7 is fixedly provided at the upper end of the fixed mold 3, and a molten plastic bin 8 is installed on the inner side of the bracket 7. The lower end of the molten plastic bin 8 is connected with a connecting pipe 9. A slidable upper fixed seat 10 is arranged on the lower side of the connecting pipe 9, and a slide groove 13 is arranged on the inner side of the connecting pipe 9. A plurality of connecting springs 14 are fixedly provided in the slide groove 13. The top end of the upper fixed seat 10 is passed through the connecting pipe 9 and is fixedly connected to the lower ends of the plurality of connecting springs 14. A fixing tube 11 is fixedly provided at the upper end of the fixed mold 3, and a detachable lower fixed seat 12 is arranged on the upper end of the fixing tube 11, and the injection head body 2 is detachably connected between the upper fixed seat 10 and the lower fixed seat 12. By pushing the upper fixed seat 10 upward, the upper fixed seat 10 can slide upward along the slide groove 13. At this time, the plurality of connecting springs 14 are squeezed to generate elastic force, so that the upper end of the injection head body 2 can be separated from the upper fixed seat 10, so as to facilitate the disassembly of the injection head body 2.

[0018] A limiting convex ring 15 is fixedly provided on the inner side of the upper fixed seat 10, and the limiting convex ring 15 conflicts with the upper end of the injection head body 2. An adjusting groove 16 is provided on the inner side of the connecting pipe 9, and the limiting convex ring 15 is slidably located in the adjusting groove 16. When the fixed seat slides upward along the slide groove 13, the limiting convex ring 15 can slide upward along the adjusting groove 16. A sealing ring 17 is fixedly provided on the inner wall of the upper fixed seat 10, and the other side of the sealing ring 17 fits with the outer wall of the injection head body 2. After the injection head body 2 is installed, the upper fixed seat 10 is driven back to the initial position by the reset action of a plurality of connecting springs 14. At this time, the top of the injection head body 2 fits with the limiting convex ring 15, and at the same time, the sealing ring 17 can increase the sealing between the upper fixed seat 10 and the injection head body 2.

[0019] The upper end of the lower fixing seat 12 is in contact with the lower end of the injection head body 2. A clamping ring 18 is fixedly provided on the upper end of the lower fixing seat 12, and the inner wall of the clamping ring 18 is in contact with the outer side of the injection head body 2. The clamping ring 18 can be used to position and install the lower end of the injection head body 2 to ensure that the lower end of the injection head body 2 will not shift after installation. A connecting column 19 is fixedly provided on the lower end of the lower fixing seat 12, and the connecting column 19 is located in the fixing tube 11. A plurality of fixing holes 20 are arranged on the outer side of the connecting column 19. A plurality of fixing pins 21 are passed through the outer side of the fixing tube 11. The top ends of the plurality of fixing pins 21 are respectively located in the plurality of fixing holes 20. A reset spring 22 is respectively passed through each fixing pin 21, and the reset spring 22 is connected between the outer wall of the fixing tube 11 and the tail end of the fixing pin 21. By pulling the plurality of fixing pins 21, the fixing tube 11 can be fixed. The top end of the pin 21 comes out of the fixing hole 20, and the reset spring 22 is stretched to generate elastic force, and then the lower fixing seat 12 can be pushed upward to facilitate the connection column 19 to be pulled out of the fixing tube 11, so that the injection head body 2 can be quickly replaced. When the injection head body 2 is reinstalled, the reset effect of the reset spring 22 can drive several fixing pins 21 to be pushed into the fixing hole 20 again, so as to fix the connection column 19 and thus achieve fixed installation of the lower fixing seat 12.

[0020] Working principle: The staff can push the upper fixing seat 10 upward to separate the upper fixing seat 10 from the upper end of the injection head body 2, and then pull a number of fixing pins 21 to make the top of the fixing pin 21 disengage from the fixing hole 20, and then push the lower fixing seat 12 upward to drive the connecting column 19 to be pulled out of the fixing tube 11, and finally the injection head body 2 can be pulled out from the clamping ring 18 to realize the disassembly of the injection head body 2, so that the injection head body 2 can be quickly and quickly replaced. Similarly, when replacing a new injection head body 2, you only need to The lower end of the injection head body 2 is first inserted into the clamping ring 18, and then the connecting column 19 can be reinstalled into the fixing tube 11, and the reset action of a plurality of reset springs 22 drives a plurality of fixing pins 21 to be pushed into the fixing hole 20 again, so as to fix the connecting column 19, thereby realizing the fixed installation of the lower fixing seat 12, and then the upper fixing seat 10 can be driven back to the initial position by the reset action of a plurality of connecting springs 14, at this time, the top end of the injection head body 2 is in contact with the limiting convex ring 15, so that the injection head body 2 can be fixed.

[0021] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding machine capable of quickly replacing an injection molding head, characterized in that: The invention comprises a base (1) and an injection head body (2), wherein a fixed mold (3) is fixedly arranged at the upper end of the base (1), a fixed plate (4) is also fixedly arranged at the upper end of the base (1), a movable mold (5) is arranged on one side of the fixed plate (4), and the movable mold (5) cooperates with the fixed mold (3), an electric telescopic rod (6) is installed on the other side of the fixed plate (4), an output shaft of the electric telescopic rod (6) passes through the fixed plate (4) and is fixedly connected to one side of the movable mold (5), and the fixed mold ( A bracket (7) is fixedly provided at the upper end of the fixed mold (3), a molten plastic bin (8) is installed on the inner side of the bracket (7), a connecting pipe (9) is connected to the lower end of the molten plastic bin (8), a slidable upper fixed seat (10) is provided on the lower side of the connecting pipe (9), a fixed tube (11) is fixedly provided at the upper end of the fixed mold (3), a detachable lower fixed seat (12) is provided at the upper end of the fixed tube (11), and the injection head body (2) is detachably connected between the upper fixed seat (10) and the lower fixed seat (12).

2. The injection molding machine capable of quickly replacing an injection molding head according to claim 1, characterized in that: The inner side of the connecting pipe (9) is provided with a slide groove (13), and a plurality of connecting springs (14) are fixedly arranged in the slide groove (13). The top end of the upper fixed seat (10) is inserted into the connecting pipe (9) and is fixedly connected to the lower ends of the plurality of connecting springs (14). The inner side of the upper fixed seat (10) is provided with a limiting convex ring (15), and the limiting convex ring (15) is in contact with the upper end of the injection head body (2). The inner side of the connecting pipe (9) is provided with an adjusting groove (16), and the limiting convex ring (15) is slidably located in the adjusting groove (16). The inner wall of the upper fixed seat (10) is provided with a sealing ring (17), and the other side of the sealing ring (17) is in contact with the outer wall of the injection head body (2).

3. The injection molding machine capable of quickly replacing an injection molding head according to claim 2, characterized in that: The upper end of the lower fixing seat (12) contacts the lower end of the injection head body (2); a clamping ring (18) is fixedly provided at the upper end of the lower fixing seat (12), and the inner wall of the clamping ring (18) is in contact with the outer side of the injection head body (2); a connecting column (19) is fixedly provided at the lower end of the lower fixing seat (12), and the connecting column (19) is located in the fixing tube (11); a plurality of fixing holes (20) are arranged on the outer side of the connecting column (19); a plurality of fixing pins (21) are passed through the outer side of the fixing tube (11), and the top ends of the plurality of fixing pins (21) are respectively located in the plurality of fixing holes (20); a return spring (22) is respectively passed through each of the fixing pins (21), and the return spring (22) is connected between the outer wall of the fixing tube (11) and the tail end of the fixing pin (21).

4. The injection molding machine capable of quickly replacing an injection molding head according to claim 3, characterized in that: A plurality of guide posts (23) are connected between the fixed plate (4) and the fixed mold (3), and the movable mold (5) can be slidably inserted into the plurality of guide posts (23).

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