Combined screw

Abstract

The utility model discloses a combined screw, which comprises a first combined screw, an assembled circular plate and a second combined screw, the top of the first combined screw is provided with the second combined screw, the middle position of the top of the second combined screw is provided with an outer connecting rod insertion hole, the top of the first combined screw is provided with the assembled circular plate, and the top of the assembled circular plate is provided with an outer connecting rod insertion hole. And a fixing screw rod is mounted at the middle position of the top of the assembly circular plate. Due to the fact that the assembling circular plate, the fixing spring and the fixing clamping block are installed, the assembling circular plate can be inserted into the installing inserting groove in the installing process, the fixing clamping block is clamped into the fixing clamping groove at the same time, and in the using process, even if the fixing screw falls off from the interior of the fixing screw hole due to corrosion or thread slipping or the like, the fixing screw is limited through the fixing clamping block. And the assembling circular plate can be prevented from continuing to move, the first combined screw and the second combined screw can be firmly installed, the double-fixing effect is achieved, and the stability of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rods, in particular to a combined screw rod. Background Art

[0002] The outer surface of the screw is a cylinder with spiral grooves or a cone with spiral grooves on the conical surface. In the processing of injection molding and extrusion products, screws are widely used. The screw is driven by a motor to rotate, and the raw materials can be evenly extruded from the inside of the injection pipe, making it easier to injection mold the raw materials.

[0003] For example, the utility model: "Step-type combined extrusion screw", with the announcement number "CN2200529Y", can meet the needs of different special processing by replacing the auxiliary screws and kneading discs of different specifications and structures, thereby reducing the cost of the machine. However, during the implementation of this patent, the kneading disc and the connecting disc are threaded together only by peripheral screws. During use, the peripheral screws are easily fallen off due to rust and thread slippage, which affects the fixation of the kneading disc and the connecting disc, thereby making the screw unable to be used normally. Therefore, a new type of combined screw is urgently needed to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to provide a combined screw to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a combined screw, comprising a first combined screw, an assembly circular plate and a second combined screw, the second combined screw being installed on the top of the first combined screw, and an external connecting rod jack being provided at the middle position of the top of the second combined screw, the assembly circular plate being installed on the top of the first combined screw, and a fixed screw being installed at the middle position of the top of the assembly circular plate.

[0006] Preferably, a fixing screw hole is provided at the middle position of the bottom of the second combination screw.

[0007] Preferably, both ends of the assembling circular plate are provided with mounting grooves, and fixing springs are installed inside the mounting grooves, and a fixing block is installed at one end of the fixing spring away from the assembling circular plate.

[0008] Preferably, the outer sides of the fixing springs are all provided with an anti-rust layer.

[0009] Preferably, the outer sides of the fixed blocks are all provided with anti-slip grooves.

[0010] Preferably, mounting screw holes are provided at the tops of both ends of the second combination screw rod, and the mounting screw holes are both connected to the external connecting rod socket.

[0011] Preferably, a corrosion-resistant layer is provided on the outer side of the fixing screw.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The combined screw is installed with a first combined screw, a second combined screw and a fixed screw. During installation, the first combined screw can be connected to the second combined screw, and the fixed screw can be rotated by the first combined screw so that the fixed screw is screwed into the fixed screw hole. The first combined screw and the second combined screw can be firmly connected by the fixed screw, so that the first combined screw and the second combined screw can be used in combination;

[0014] 2. The combined screw is equipped with an assembly circular plate, a fixing spring and a fixing block. During installation, the assembly circular plate can be inserted into the installation slot, and the fixing block can be simultaneously inserted into the fixing slot. During use, even if the fixing screw falls off from the fixing screw hole due to rust or thread slippage, the fixing block can limit the assembly circular plate and prevent it from moving further. The first and second combination screws can be firmly installed, achieving a double fixing effect and improving the stability of the device.

[0015] 3. The combined screw is provided with a mounting screw hole and an external connecting rod socket. The external connecting rod can be inserted into the external connecting rod socket, and a bolt can be screwed into the mounting screw hole to fix the external connecting rod and the second combined screw, thereby facilitating the installation of the second combined screw on equipment such as an injection molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a main cross-sectional view of the present utility model;

[0017] Figure 2 For this utility model Figure 1 A magnified view of the structure at point A;

[0018] Figure 3 This is a schematic front and cross-sectional view of the assembled circular plate of the present invention.

[0019] In the figure: 1. First combination screw; 2. Assembly circular plate; 3. Mounting slot; 4. Fixing screw hole; 5. Second combination screw; 6. Mounting screw hole; 7. External connecting rod socket; 8. Fixing screw; 9. Mounting groove; 10. Fixing spring; 11. Fixing block; 12. Fixing slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-3 The utility model provides an embodiment: a combined screw, including a first combined screw 1, an assembly circular plate 2 and a second combined screw 5, the second combined screw 5 is installed on the top of the first combined screw 1, and an external connecting rod jack 7 is provided at the middle position of the top of the second combined screw 5, the top of the first combined screw 1 is installed with an assembly circular plate 2, and a fixed screw 8 is installed at the middle position of the top of the assembly circular plate 2, and the outer side of the fixed screw 8 is provided with a corrosion-resistant layer, which is beneficial to prolonging the service life of the fixed screw 8.

[0022] like Figure 1 As shown, a fixing screw hole 4 is provided at the middle position of the bottom of the second combination screw 5. During installation, the first combination screw 1 can be connected to the second combination screw 5, and the fixing screw 8 can be rotated through the first combination screw 1 so that the fixing screw 8 is screwed into the fixing screw hole 4. The first combination screw 1 and the second combination screw 5 can be firmly connected through the fixing screw 8, so that the first combination screw 1 and the second combination screw 5 can be used in combination.

[0023] like Figure 1-3 As shown, both ends of the assembly circular plate 2 are provided with mounting grooves 9, and the interior of the mounting grooves 9 are provided with fixing springs 10, and the end of the fixing spring 10 away from the assembly circular plate 2 is provided with a fixing block 11, the outer side of the fixing spring 10 is provided with an anti-rust layer, and the outer side of the fixing block 11 is provided with anti-slip grooves. During installation, the assembly circular plate 2 can be inserted into the installation slot 3, and the fixing block 11 can be simultaneously inserted into the fixing slot 12. During use, even if the fixing screw 8 falls off from the fixing screw hole 4 due to rust or stripping, the fixing block 11 is used to limit it, which can prevent the assembly circular plate 2 from continuing to move, and the first combination screw 1 and the second combination screw 5 can be firmly installed, which has a double fixing effect and is beneficial to improving the stability of the device.

[0024] like Figure 1 As shown, mounting screw holes 6 are provided at the tops of both ends of the second combination screw 5, and the mounting screw holes 6 are connected to the external connecting rod socket 7. The external connecting rod can be inserted into the external connecting rod socket 7, and the bolts can be screwed into the mounting screw holes 6 to fix the external connecting rod and the second combination screw 5, thereby facilitating the installation of the second combination screw 5 on equipment such as an injection molding machine.

[0025] Working principle:

[0026] During installation, first insert the fixing screw 8 into the fixing screw hole 4, then rotate the first assembly screw 1, which drives the fixing screw 8 to rotate, so that the fixing screw 8 is threadedly installed in the fixing screw hole 4;

[0027] The assembled circular plate 2 is simultaneously inserted into the mounting slot 3. When the fixing screw 8 is completely screwed into the fixing screw hole 4, the first assembly screw 1 and the second assembly screw 5 are tightly fitted together. At this time, the fixing block 11 moves to a position facing the fixing slot 12. The elastic action of the fixing spring 10 pushes the fixing block 11 to move, and the fixing block 11 can be snapped into the fixing slot 12. Then, the first assembly screw 1 and the second assembly screw 5 can be used in combination.

[0028] During use, the first combination screw 1 and the second combination screw 5 can be firmly connected by the fixing screw 8 and the fixing block 11. If the fixing screw 8 falls off from the fixing screw hole 4 due to rust or thread slippage, it can be limited by the fixing block 11 to prevent the assembly circular plate 2 from continuing to move. The first combination screw 1 and the second combination screw 5 can be firmly installed, which has a double fixing effect and is beneficial to improving the stability of the device.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A combined screw, comprising a first combined screw (1), an assembly circular plate (2) and a second combined screw (5), characterized in that: A second combined screw (5) is mounted on the top of the first combined screw (1), and an external connecting rod jack (7) is provided at the middle position of the top of the second combined screw (5); an assembly circular plate (2) is mounted on the top of the first combined screw (1), and a fixed screw (8) is mounted at the middle position of the top of the assembly circular plate (2).

2. A combined screw according to claim 1, characterized in that: A fixing screw hole (4) is provided at the middle position of the bottom of the second combined screw rod (5).

3. The combined screw according to claim 1, characterized in that: Both ends of the assembly circular plate (2) are provided with mounting grooves (9), and fixing springs (10) are installed inside the mounting grooves (9), and a fixing block (11) is installed at one end of the fixing spring (10) away from the assembly circular plate (2).

4. A combined screw according to claim 3, characterized in that: The outer sides of the fixing springs (10) are all provided with a rust-proof layer.

5. The combined screw according to claim 3, characterized in that: The outer sides of the fixed blocks (11) are all provided with anti-slip grooves.

6. The combined screw according to claim 1, characterized in that: The tops of both ends of the second combined screw rod (5) are both provided with mounting screw holes (6), and the mounting screw holes (6) are both connected to the external connecting rod socket (7).

7. The combined screw according to claim 1, characterized in that: The outer side of the fixing screw (8) is provided with a corrosion-resistant layer.

Images