Injection shifting mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to an injection moving mechanism of an injection molding machine, the injection moving mechanism is arranged between an injection table and a rack, the injection moving mechanism is used for adjusting the position of the injection table, the injection table is in sliding connection with the rack, and the injection moving mechanism comprises a driving piece and an injection moving assembly; the injection moving assembly comprises a ball screw, a nut seat, a separator, a guide sleeve and a plurality of bearings, a mounting hole is formed in the injection table, the nut seat is arranged in the mounting hole, the ball screw is in threaded connection with the nut seat, the bearing sleeves the head end of the ball screw, the guide sleeve is arranged on the outer side of the bearing, and the guide sleeve is located between the peripheral surface of the bearing and the inner wall of the mounting hole; the separator is arranged between the nut seat and the guide sleeve, the separator is installed on the guide sleeve, through the design of the guide sleeve and the separator, the nut seat and the bearing do not need to be installed separately from the two sides and only need to be installed and disassembled from one side, the installation working hours are greatly shortened, and the disassembly time for later maintenance of the lead screw and the bearing is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a shot-shifting mechanism of an injection molding machine. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity. The design structure of the injection device of the existing injection molding machine is relatively complex. The separation of the nut seat and the bearing of the injection device is a boss protruding from the inner wall of its mounting hole, resulting in the need to enter the nut seat and the bearing from both ends of the mounting hole during assembly, which makes it inconvenient to assemble or repair, low production efficiency, and high cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the problem that the nut seat and the bearing of the shot-shifting device in the prior art are separated by a boss protruding from the inner wall of the mounting hole, resulting in the need to assemble the nut seat and the bearing from both ends of the mounting hole, which makes assembly or maintenance inconvenient, low production efficiency and high cost, a shot-shifting mechanism for an injection molding machine is provided.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a shooting and moving mechanism of an injection molding machine, the shooting and moving mechanism is installed between an injection table and a frame, the shooting and moving mechanism is used to adjust the position of the injection table, the injection table and the frame are slidably connected, the shooting and moving mechanism includes a driving member and a shooting and moving assembly, the output end of the driving member is transmission-connected with the shooting and moving assembly, and the driving member is used to provide power for the movement of the injection table;

[0005] The injection displacement assembly includes a ball screw, a nut seat, a spacer, a guide sleeve and several bearings. A mounting hole is opened on the injection table, the nut seat is arranged in the mounting hole, the ball screw and the nut seat are threadedly connected, the bearing sleeve is arranged on the head end of the ball screw, the guide sleeve is arranged on the outside of the bearing, and the guide sleeve is located between the outer circumferential surface of the bearing and the inner wall of the mounting hole, the spacer is arranged between the nut seat and the guide sleeve, and the spacer is installed on the guide sleeve. Through the design of the guide sleeve and the spacer, the nut seat and the bearing do not need to be installed separately from both sides, but only need to be installed and disassembled from one side, which greatly shortens the installation time and the disassembly time of the screw and bearing for later maintenance.

[0006] In order to solve the problem of inconvenient installation, connection and disassembly of the guide sleeve and the separator, the guide sleeve further includes a recessed engaging groove on one end close to the separator, and a protruding engaging block matching the engaging groove on one end close to the guide sleeve, and the engaging block is arranged in the engaging groove.

[0007] In order to solve the problem of inconvenient fitting of the partition, the partition is further comprised of two splicing pieces, the splicing piece is in a semicircular structure, and a fitting block is provided on the splicing piece.

[0008] In order to solve the problem that the guide sleeve is easy to fall out due to the lack of fixation at the mounting hole port, the shooting and displacement assembly further includes an end cover, the end cover is fixedly connected to the injection table, and the end cover is used to close one end of the mounting hole.

[0009] In order to solve the problem of loose installation of the sleeve, the first end of the guide sleeve is further folded outward to form a mounting portion, and the mounting portion is located between the end cover and the injection platform.

[0010] The shooting and moving assembly further includes a connecting frame, which is used for installing the ball screw. The connecting frame is fixedly connected to the frame, and the tail end of the ball screw is arranged in the connecting frame.

[0011] It further comprises a step surface protruding from the inner wall of the mounting hole, and the step surface is used to abut against the tail end surface of the partition.

[0012] The beneficial effect of the utility model is that the injection-shifting mechanism of the injection molding machine provided by the utility model can make the nut seat and the bearing no longer need to be installed separately from both sides, but only need to be installed and disassembled from one side, which greatly shortens the installation time and the disassembly time of the screw and the bearing for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the top view of the structure of the utility model in the installed state;

[0015] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0016] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the shooting and shifting mechanism of the utility model.

[0018] In the figure: 1. driving member, 2. shooting and shifting assembly, 21. ball screw, 22. nut seat, 23. partition, 231. fitting groove, 24. guide sleeve, 241. fitting block, 242. mounting portion, 25. bearing, 26. end cover, 27. connecting frame, 3. mounting hole, 31. step surface. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] like Figure 1 Schematic diagram of the structure of the utility model, a shot shift mechanism of an injection molding machine, the shot shift mechanism is installed between the injection table and the frame, the shot shift mechanism is used to adjust the position of the injection table, the injection table and the frame are slidably connected, the shot shift mechanism includes a driving member 1 and a shot shift assembly 2, the output end of the driving member 1 is transmission-connected to the shot shift assembly 2, such as Figure 4 As shown, the driving member 1 is used to provide power for the movement of the injection station. The driving member 1 is a motor. A transmission wheel is installed on the output shaft of the driving member 1. The head end of the ball screw 21 extends to the outside of the end cover 26. A driven wheel is installed on the extended part of the ball screw 21. The driving wheel and the driven wheel are connected by a transmission belt.

[0021] like Figure 2 , Figure 3 As shown, the injection displacement assembly 2 includes a ball screw 21, a nut seat 22, a separator 23, a guide sleeve 24 and a plurality of bearings 25. A mounting hole 3 is opened on the injection table, the nut seat 22 is arranged in the mounting hole 3, the ball screw 21 and the nut seat 22 are threadedly connected, the bearing 25 is sleeved on the head end of the ball screw 21, the guide sleeve 24 is arranged on the outside of the bearing 25, and the guide sleeve 24 is located between the outer circumferential surface of the bearing 25 and the inner wall of the mounting hole 3, the separator 23 is arranged between the nut seat 22 and the guide sleeve 24, and the separator 23 is installed on the guide sleeve 24, the separator 23 is used to separate the bearing 25 and the nut seat 22, through the design of the guide sleeve 24 and the separator 23, the guide sleeve 24 and the separator 23 adopt a detachable design, so that the nut seat 22 and the bearing 25 do not need to be installed separately from both sides, but only need to be installed and disassembled from one side, which greatly shortens the installation time and the disassembly time of the screw and the bearing for later maintenance.

[0022] like Figure 2 , Figure 3 As shown, an engaging groove 231 is recessed on one end of the guide sleeve 24 near the partition 23, and an engaging block 241 matching the engaging groove 231 is protruded on one end of the partition 23 near the guide sleeve 24. The engaging block 241 is arranged in the engaging groove 231, so that the guide sleeve 24 and the partition 23 can be quickly installed, thereby improving the installation and maintenance efficiency of the shooting and moving mechanism.

[0023] The partition 23 is composed of two splicing pieces, and the splicing pieces are semicircular in structure. The splicing pieces are provided with a fitting block 241, which further improves the installation efficiency and can prevent the partition 23 or the guide sleeve 24 from deforming under force during the fitting process.

[0024] like Figure 2 , Figure 3 As shown, the shooting and displacement assembly 2 includes an end cover 26, which is fixedly connected to the injection platform, and the end cover 26 is used to close one end of the mounting hole 3; the head end of the guide sleeve 24 is folded outward to form a mounting portion 242, and the mounting portion 242 is located between the end cover 26 and the injection platform. The guide sleeve 24 is clamped and fixed by the end cover 26 and the injection platform, so that the positions of the guide sleeve 24 and the partition 23 are fixed, and a step surface 31 is protruded on the inner wall of the mounting hole 3, and the step surface 31 is used to resist the tail end surface of the partition 23. The step surface 31 and the end cover 26 cooperate to clamp and fix the partition 23 and the guide sleeve 24.

[0025] The shooting and moving assembly 2 includes a connecting frame 27 , which is used for installing the ball screw 21 . The connecting frame 27 is fixedly connected to the frame, and the tail end of the ball screw 21 is arranged in the connecting frame 27 .

[0026] The connecting frame 27 is fixedly connected to the frame, and the connecting frame 27 is threadedly connected to the nut seat 22. The nut seat 22 is arranged in the mounting hole 3, and there is a gap between the nut seat 22 and the inner wall of the mounting hole 3. The nut seat 22 can move relative to the mounting hole 3. The ball screw 21 rotates and moves back and forth relative to the nut seat 22, thereby driving the injection table to move back and forth. During this process, the position of the nut seat 22 remains fixed.

[0027] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A shot shifting mechanism of an injection molding machine, the shot shifting mechanism is installed between an injection table and a frame, the shot shifting mechanism is used to adjust the position of the injection table, the injection table and the frame are slidably connected, and is characterized in that: The injection displacement mechanism comprises a driving member (1) and an injection displacement assembly (2), wherein the output end of the driving member (1) is drivingly connected to the injection displacement assembly (2), and the driving member (1) is used to provide power for the movement of the injection platform; The injection displacement assembly (2) includes a ball screw (21), a nut seat (22), a separator (23), a guide sleeve (24) and a plurality of bearings (25). A mounting hole (3) is provided on the injection platform. The nut seat (22) is arranged in the mounting hole (3). The ball screw (21) and the nut seat (22) are threadedly connected. The bearing (25) is sleeved on the head end of the ball screw (21). The guide sleeve (24) is arranged on the outside of the bearing (25), and the guide sleeve (24) is located between the outer peripheral surface of the bearing (25) and the inner wall of the mounting hole (3). The separator (23) is arranged between the nut seat (22) and the guide sleeve (24), and the separator (23) is installed on the guide sleeve (24).

2. The injection molding machine's injection-shifting mechanism according to claim 1, characterized in that: An engaging groove (231) is formed in a recessed manner on one end of the guide sleeve (24) close to the partition (23), and an engaging block (241) matching the engaging groove (231) is formed in a protruding manner on one end of the partition (23) close to the guide sleeve (24), and the engaging block (241) is arranged in the engaging groove (231).

3. The injection-shifting mechanism of an injection molding machine according to claim 2, characterized in that: The partition (23) is formed by splicing two splicing pieces, the splicing pieces are in a semicircular structure, and the splicing pieces are provided with a chiseled block (241).

4. The injection-shifting mechanism of an injection molding machine according to claim 1, characterized in that: The injection displacement assembly (2) comprises an end cover (26), the end cover (26) is fixedly connected to the injection platform, and the end cover (26) is used to close one end of the mounting hole (3).

5. The injection-shifting mechanism of an injection molding machine according to claim 4, characterized in that: The head end of the guide sleeve (24) is folded outward to form a mounting portion (242), and the mounting portion (242) is located between the end cover (26) and the injection platform.

6. The injection-shifting mechanism of an injection molding machine according to claim 1, characterized in that: The shooting and displacement assembly (2) comprises a connecting frame (27), wherein the connecting frame (27) is used for mounting a ball screw (21), the connecting frame (27) is fixedly connected to a frame, and the tail end of the ball screw (21) is arranged in the connecting frame (27).

7. The injection-shifting mechanism of an injection molding machine according to claim 1, characterized in that: A step surface (31) is protruded from the inner wall of the mounting hole (3), and the step surface (31) is used to abut against the rear end surface of the partition (23).

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