Nut assembling tool

Abstract

The utility model discloses a nut assembling tool, which belongs to the technical field of nut assembling, and comprises a fixed seat, a rotating disc and a plurality of clamping components uniformly arranged along the circumferential direction of the fixed seat are arranged on the fixed seat, each clamping component comprises a guide rod and a guide sleeve, the guide sleeve is elastically connected and slidably connected with the guide rod, a clamping rod is arranged outside the guide sleeve, and the clamping rod is connected with the rotating disc. Clamping parts are arranged on the sides, away from the guide sleeves, of the clamping rods. The clamping assembly can clamp a nut, a side hole in the nut is positioned and locked through the clamping part, the guide sleeve slides on the guide rod so that the clamping assembly can clamp or loosen the nut, and the elastic piece can exert certain clamping force on the clamping part and can reset the guide sleeve at the same time. The clamping assembly can drive the nut to rotate by rotating the rotating disc, and finally assembling of the nut is achieved. According to the scheme, the overall structure is simple, rapid clamping and assembling of the side hole nut on the injection molding equipment can be achieved, and the assembling efficiency of the nut is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nut mounting structure, more specifically, it relates to a nut assembly tool. BACKGROUND

[0002] Injection molding machine equipment as the important equipment of injection molding industry, each toggle lever type injection molding machine needs to assemble 8 nuts, contains 4 front nuts and 4 rear nuts respectively, at present, the assembling mode still is the manual mode that nut is screwed into pull rod, but this kind of method is not only very laborious (without fixed force point), and the assembling efficiency is very low, so efficient and convenient front and rear nut auxiliary mounting device will play a very key role to improve the nut assembling efficiency.

[0003] For example: China patent announcement number CN108312165A, announcement date is July 24, 2018, and the invention name is a nut class workpiece clamp that inner and outer rings are self-adaptive clamped, including coaxially arranged inner sleeve pipe and outer sleeve pipe, the inner sleeve pipe is arranged in the outer sleeve pipe, the outer sleeve pipe one end is equipped with inner sleeve pipe power device, the inner sleeve pipe power device is connected with the inner sleeve pipe one end, drives the inner sleeve pipe relative to the outer sleeve pipe axial reciprocating motion, the inner sleeve pipe tail end is equipped with at least three inner clamps, and the inner clamps are radially arranged and evenly arranged along the inner sleeve pipe wall circumference;The outer sleeve pipe tail end is equipped with a plurality of outer clamps, and the outer clamps are radially arranged and evenly arranged along the outer sleeve pipe outer surface circumference.The scheme first fixes the inner ring of nut class workpiece through the inner clamp and inner clamp power device, realizes preliminary grabbing, and then locks the outer ring of the nut class workpiece grabbed by the inner clamp through the outer clamp and outer clamp power device, realizes grabbing transmission;At the same time, compared with the existing nut class workpiece clamp, it has better adaptability, and is favorable to improve the grabbing efficiency;But the scheme not only has complex structure, and cannot effectively realize the assembly of nut. UTILITY MODEL CONTENTS

[0004] The utility model overcomes the problems of complex structure and low assembling efficiency of the existing nut assembly tool, and provides a nut assembly tool, which can realize rapid clamping and assembly of the side hole nut of the injection molding equipment, and greatly improves the assembling efficiency of the nut.

[0005] In order to solve the above technical problems, the utility model discloses the following technical scheme: A nut assembly tool, comprising a fixed seat, the fixed seat is equipped with a rotating disc and a plurality of clamping assemblies that are evenly arranged along the circumference of the fixed seat, the clamping assembly comprises a guide rod and a guide sleeve, the guide sleeve is elastically connected and slidingly connected to the guide rod, the guide sleeve is externally provided with a clamping rod, and the clamping rod is provided with a clamping portion on the side away from the guide sleeve. In the scheme, the clamping assembly can clamp the nut, the clamping portion can position and lock the side hole on the nut, the guide sleeve can slide on the guide rod to make the clamping assembly clamp or release the nut, and the elastic member can not only exert a certain clamping force on the clamping portion, but also reset the guide sleeve; the clamping assembly can drive the nut to rotate by rotating the rotating disc, and finally the nut is assembled; the overall structure of the scheme is simple, the side hole nut on the injection molding equipment can be quickly clamped and assembled, and the assembly efficiency of the nut is greatly improved.

[0006] As a preferred, one end of the guide rod is fixedly connected with the fixed seat, and the other end of the guide rod is provided with a limiting portion. The limiting portion on the guide rod can limit the elastic member or the guide sleeve, preventing the elastic member and the guide sleeve from being separated from the guide rod; in addition, the limiting portion also provides a force point for the elastic member, ensuring that the elastic member can play an elastic role.

[0007] As a preferred, an elastic member is sleeved on the guide rod, one end of the elastic member abuts against the limiting portion, the other end of the elastic member abuts against the guide sleeve, and the guide sleeve is located between the elastic member and the fixed seat. The elastic member can exert an elastic thrust on the guide sleeve, so that the guide sleeve can exert a clamping force on the nut, and the guide sleeve can also be reset.

[0008] As a preferred, one end of the clamping portion is fixed with the clamping rod, and the other end of the clamping portion is wedge-shaped and faces the position where the axis of the rotating disc is located. The clamping portion can position and clamp the side hole on the nut, and the wedge-shaped structure can better realize positioning and reduce the positioning position precision of the clamping portion.

[0009] As a preferred, a force applying pull ring is further arranged on the clamping rod. The force applying pull ring can be pulled by the staff to move the guide sleeve outward, so that the nut can be put into the clamping assembly.

[0010] As a preferred, a driving connection portion is further arranged on the fixed seat away from the clamping assembly. The driving connection portion can be connected with an external driving device, so that the fixed seat is driven to rotate by the driving device, and manual operation can be further reduced.

[0011] As preferred, the guide sleeve is circumferentially limited with the guide rod. The circumferential limitation between the guide sleeve and the guide rod can ensure the position of the clamping rod and the clamping part, thereby ensuring the clamping effect of the clamping assembly.

[0012] As preferred, the guide sleeve is provided with a limiting plane, the fixed seat is provided with a limiting sheet matched with the limiting plane, and the limiting plane and the limiting sheet are symmetrically distributed on two sides of the guide sleeve. The limiting plane on the guide sleeve and the limiting sheet on the fixed seat can effectively limit the circumferential rotation of the guide sleeve, and can also keep a certain friction between the guide sleeve and the limiting sheet, thereby preventing the guide sleeve from reciprocating and jumping during the rotation of the fixed seat, and ensuring the clamping and positioning effect.

[0013] As preferred, the rotating disc comprises a rotating ring and a rotating frame, one end of the rotating frame is fixedly connected with the fixed seat, and the other end of the rotating frame is connected to the inner side of the rotating ring. The circular ring-shaped rotating disc is more convenient for the operator to operate, and improves the operation performance of the device.

[0014] Compared with the prior art, the utility model has the advantages of (1) realizing the rapid clamping and assembly of the upper hole nut of the injection molding equipment, greatly improving the assembly efficiency of the nut; (2) the positioning effect of the nut is better and more stable, and the clamping assembly can be prevented from jumping; (3) convenient to use, more labor-saving, and the nut state can be adjusted in multiple ways, and the selectivity is higher. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the isometric view of the utility model.

[0016] Figure 2 It is the structural schematic view of the fixed seat and the guide rod of the utility model.

[0017] Figure 3 It is a structural schematic view of the guide sleeve and the guide rod of the utility model.

[0018] Figure 4 It is the schematic view of one embodiment of the utility model.

[0019] Figure 5 It is the schematic view of another embodiment of the utility model.

[0020] In the drawing: 1. fixed seat, 2. rotating disc, 2.1. rotating ring, 2.2. rotating frame, 3. clamping assembly, 3.1. guide rod, 3.1.1. limiting part, 3.2. guide sleeve, 3.2.1. limiting plane, 3.3. elastic piece, 3.4. clamping rod, 3.5. clamping part, 3.6. force applying ring, 3.7. limiting sheet, 4. driving connection part, 5. electric screw gun, 6. nut, 7. screw rod. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be further explained in combination with the drawings and specific embodiments.

[0022] Embodiment 1: a nut assembly tool as shown in the drawings, comprising a fixed seat 1, a clamping assembly 3 and a rotating disc 2, the rotating disc 2 and the clamping assembly 3 are respectively located on both sides of the fixed seat 1 and are fixedly connected together with the fixed seat 1 to form an integral whole. Figure 1 and Figure 2 The clamping assembly 3 can clamp and position the nut 6, when the rotating disc 2 is rotated, the clamping assembly 3 on the fixed seat 1 can be driven to rotate, thereby driving the nut 6 to rotate, and finally realizing the assembly of the nut 6.

[0023] Specifically, the clamping assembly 3 comprises a guide rod 3.1, a guide sleeve 3.2, an elastic piece 3.3, a clamping rod 3.4 and a clamping part 3.5. One end of the guide rod 3.1 is fixedly connected together with the fixed seat 1, and the other end of the guide rod 3.1 is provided with a limiting part 3.1.1. The guide sleeve 3.2 and the elastic piece 3.3 are sleeved on the guide rod 3.1, and the elastic piece 3.3 is close to the side of the position where the limiting part 3.1.1 is located, and the guide sleeve 3.2 is close to the side of the position where the fixed seat 1 is located; under the action of the elastic piece 3.3, the guide sleeve 3.2 abuts on the fixed seat 1. The guide sleeve 3.2 is slidingly connected relative to the guide rod 3.1, the limiting part 3.1.1 is a circular step shape, and the radial dimension of the limiting part 3.1.1 is greater than the radial dimension of the guide rod 3.1, so that the limiting part 3.1.1 can prevent the elastic piece 3.3 from slipping out of the guide rod 3.1. It should be noted that the limiting part 3.1.1 and the guide rod 3.1 are detachably connected, specifically, a screw connection mode can be adopted, or a nut piece can be provided, which is beneficial to the installation of the guide sleeve 3.2 and the elastic piece 3.3 into the guide rod 3.1, and is also convenient for the later maintenance work.

[0024] The clamping rod 3.4 is further provided outside the guide sleeve 3.2, one end of the clamping rod 3.4 is fixedly connected with the guide sleeve 3.2, and the other end of the clamping rod 3.4 is arranged with a clamping part 3.5, and the clamping rod 3.4 is perpendicular to the guide rod 3.1; when the guide sleeve 3.2 slides along the guide rod 3.1, the clamping rod 3.4 also moves radially along the length direction of the guide rod 3.1, thereby driving the clamping part 3.5 on the clamping rod 3.4 to position and fix the nut 6.

[0025] It should be noted that the clamping assembly 3 needs to be provided with at least two groups, and in the embodiment, the clamping assembly 3 is provided with four groups. The nut 6 on the injection molding equipment is circular, and a side hole is provided on the outer peripheral surface of the nut 6, so that when the guide sleeve 3.2 on the clamping assembly 3 moves radially inward, the clamping portion 3.5 drives the side hole on the outer peripheral surface of the nut 6 to be positioned and clamped, thereby ensuring the clamping effect of the clamping assembly 3 on the nut 6.

[0026] In addition, in order to ensure the positioning effect of the clamping portion 3.5 on the nut 6, the side of the clamping portion 3.5 towards the center is designed as a wedge structure. Since the end size of the wedge structure is small, the clamping portion 3.5 can more easily enter the side hole of the nut 6, thereby improving the clamping efficiency of the clamping assembly 3 on the nut 6.

[0027] A force applying pull ring 3.6 is further provided on the clamping rod 3.4, and the force applying pull ring 3.6 is circular, which facilitates the staff to pull the force applying pull ring 3.6. When the force applying pull ring 3.6 moves along the radial outside of the fixed seat 1, the guide sleeve 3.2 slides along the outside of the guide rod 3.1, thereby compressing the elastic member 3.3. The size of the circular ring formed by the four clamping rods 3.4 becomes larger than the radial size of the nut 6, so that the nut 6 can be placed in the four clamping assemblies 3. Then, the force applying pull ring 3.6 is slowly released, at this time, the elastic member 3.3 gradually expands and pushes the guide sleeve 3.2 to slide along the inside of the guide rod 3.1, so that the clamping portion 3.5 on the clamping rod 3.4 enters the side hole of the nut 6. At this time, rotating the rotating disc 2 can drive the fixed seat 1 to rotate, thereby driving the four clamping assemblies 3 to rotate as a whole, so as to realize the rotation of the nut 6 and the assembly of the nut 6.

[0028] It should be further noted that in order to prevent the guide sleeve 3.2 and the guide rod 3.1 from rotating circumferentially, causing the clamping portions 3.5 at the ends of the four clamping rods 3.4 to be unable to be coplanar and losing the clamping and positioning effect on the nut 6, the guide sleeve 3.2 and the guide rod 3.1 need to be designed as circumferential limiters. Specifically, as shown in Figure 3 the end section of the guide rod 3.1 can be designed as a waist round hole shape, and the inner hole of the guide sleeve 3.2 is designed as a waist round hole shape. When the guide sleeve 3.2 and the guide rod 3.1 cooperate, a circumferential limiter is formed. In addition, in addition to designing the end section of the guide sleeve 3.2 and the guide rod 3.1 as a waist round hole shape, the cross section thereof can also be designed as a polygonal structure, such as a quadrilateral, a pentagon or a hexagon.

[0029] The driving connection part 4 is arranged on the fixed seat 1 away from the clamping assembly 3, that is, the driving connection part 4 and the clamping assembly 3 are arranged on the two sides of the rotating disc 2 respectively. The driving connection part 4 can be used for connecting an external driving structure. Specifically, the driving connection part 4 is a hexagonal bolt head structure, so that a hexagonal sleeve can be matched on the driving connection part 4 by sleeving. As shown in Figure 5 , an electric screw gun 5 is connected with the driving connection part 4, and the output end of the electric screw gun 5 is provided with a hexagonal sleeve. Starting the electric screw gun 5 can output torque to drive the rotating disc 2 to rotate, so as to rotate the clamped nut 6 and complete the assembly of the nut 6. Similarly, in addition to using external facilities to drive the rotating disc 2 to rotate, the rotating disc 2 can also be manually rotated to realize the rotation of the nut 6, as shown in Figure 4 . The above two rotating modes can be selected according to the actual environmental requirements, and more scheme options are provided.

[0030] The rotating disc 2 is composed of a rotating frame 2.2 and a rotating ring 2.1. The rotating frame 2.2 connects the rotating ring 2.1 and the fixed seat 1. Specifically, the rotating frame 2.2 is provided with three roots and is uniformly distributed along the circumference of the fixed seat 1. One end of the rotating frame 2.2 is connected to the fixed seat 1, and the other end of the rotating frame 2.2 is fixed to the inner side of the rotating ring 2.1. This not only ensures the structural strength of the rotating disc 2, but also facilitates the staff to grasp and rotate the rotating disc 2, thereby improving the rotating efficiency.

[0031] Embodiment 2: as shown in Figure 1 and Figure 2 , a nut assembly tool includes a fixed seat 1, a clamping assembly 3 and a rotating disc 2. The rotating disc 2 and the clamping assembly 3 are respectively located on the two sides of the fixed seat 1 and are fixedly connected together to form an integral whole. The clamping assembly 3 can clamp and position the nut 6. When the rotating disc 2 is rotated, the clamping assembly 3 on the fixed seat 1 is driven to rotate together, thereby driving the nut 6 to rotate, and finally realizing the assembly of the nut 6.

[0032] Specifically, the clamping assembly 3 comprises a guide rod 3.1, a guide sleeve 3.2, an elastic member 3.3, a clamping rod 3.4 and a clamping portion 3.5. One end of the guide rod 3.1 is fixedly connected with the fixed seat 1, and the other end of the guide rod 3.1 is provided with a limiting portion 3.1.1. The guide sleeve 3.2 and the elastic member 3.3 are sleeved on the guide rod 3.1, and the elastic member 3.3 is close to the side of the position where the limiting portion 3.1.1 is located, and the guide sleeve 3.2 is close to the side of the position where the fixed seat 1 is located; under the action of the elastic member 3.3, the guide sleeve 3.2 abuts against the fixed seat 1. The guide sleeve 3.2 is slidably connected with the guide rod 3.1, the limiting portion 3.1.1 is a circular step, and the radial dimension of the limiting portion 3.1.1 is greater than the radial dimension of the guide rod 3.1, so that the limiting portion 3.1.1 can prevent the elastic member 3.3 from slipping out of the guide rod 3.1. It should be noted that the limiting portion 3.1.1 and the guide rod 3.1 are detachably connected, specifically, a screw connection mode can be adopted, or a nut member can be provided, which is beneficial to the installation of the guide sleeve 3.2 and the elastic member 3.3 into the guide rod 3.1, and is also convenient for the later maintenance work.

[0033] A clamping rod 3.4 is further arranged outside the guide sleeve 3.2, one end of the clamping rod 3.4 is fixedly connected with the guide sleeve 3.2, and the other end of the clamping rod 3.4 is arranged with a clamping portion 3.5, and the clamping rod 3.4 is perpendicular to the guide rod 3.1; when the guide sleeve 3.2 slides along the guide rod 3.1, the clamping rod 3.4 also moves radially along the length direction of the guide rod 3.1, so as to drive the clamping portion 3.5 on the clamping rod 3.4 to position and fix the nut 6.

[0034] It should be noted that the clamping assembly 3 needs to be provided with at least two groups, and in the embodiment, the clamping assembly 3 is provided with four groups. The nut 6 on the injection molding equipment is circular, and a side hole is arranged on the outer peripheral surface of the nut 6, so that when the guide sleeve 3.2 on the clamping assembly 3 moves radially inward, the clamping portion 3.5 drives the side hole on the outer peripheral surface of the nut 6 to be positioned and clamped, so as to ensure the clamping effect of the clamping assembly 3 on the nut 6.

[0035] In addition, in order to ensure the positioning effect of the clamping portion 3.5 on the nut 6, the side of the clamping portion 3.5 facing the center is provided with a wedge structure, and since the end dimension of the wedge structure is small, the clamping portion 3.5 can more easily enter the side hole of the nut 6, so as to improve the clamping efficiency of the clamping assembly 3 on the nut 6.

[0036] The force applying pull ring 3.6 is circular in shape, which facilitates the staff to pull the force applying pull ring 3.6. When the force applying pull ring 3.6 moves along the radial outer side of the fixed seat 1, the guide sleeve 3.2 slides along the outer side of the guide rod 3.1, thereby compressing the elastic member 3.3. The size of the circular ring formed by the four sets of clamping rods 3.4 becomes larger than the radial size of the nut 6, so that the nut 6 can be placed in the four sets of clamping assemblies 3, and then the force applying pull ring 3.6 is slowly released. At this time, the elastic member 3.3 gradually expands and pushes the guide sleeve 3.2 to slide along the inner side of the guide rod 3.1, so that the clamping portions 3.5 on the clamping rods 3.4 enter the side holes of the nut 6. At this time, rotating the rotating disc 2 can drive the fixed seat 1 to rotate, thereby driving the four sets of clamping assemblies 3 to rotate as a whole, so as to realize the rotation of the nut 6 and the assembly of the nut 6.

[0037] It should be further pointed out that, in order to prevent the guide sleeve 3.2 and the guide rod 3.1 from rotating circumferentially, causing the clamping portions 3.5 at the ends of the four sets of clamping rods 3.4 to be unable to be coplanar and losing the clamping and positioning effect on the nut 6, the guide sleeve 3.2 and the guide rod 3.1 need to be designed to be circumferentially limited. Specifically, as shown in Figure 1 two sets of symmetrically arranged limiting planes 3.2.1 are arranged outside the guide sleeve 3.2, and two sets of symmetrically arranged limiting pieces 3.7 are arranged on the fixed seat 1 and close to the guide rod 3.1. The positions of the limiting pieces 3.7 are aligned with the positions of the limiting planes 3.2.1. The limiting pieces 3.7 are L-shaped structures, one end of the limiting pieces 3.7 is fixedly connected with the fixed seat 1, and the other end of the limiting pieces 3.7 is parallel to and close to the guide rod 3.1 and maintains a certain interval, which can accommodate the wall thickness of the guide sleeve 3.2. In this way, the circumferential limitation of the guide sleeve 3.2 and the guide rod 3.1 can be ensured by the limiting planes 3.2.1 and the limiting pieces 3.7. In addition, a certain friction force can also be generated between the limiting pieces 3.7 and the guide sleeve 3.2, so as to ensure the cooperation degree of the guide sleeve 3.2 and the guide rod 3.1. In this way, when the clamping assembly 3 rotates as a whole, the guide sleeve 3.2 can be effectively prevented from jumping due to centrifugal force, and the clamping and positioning effect of the clamping assembly 3 on the nut 6 can be ensured.

[0038] The driving connection portion 4 is arranged on the fixed seat 1 away from the clamping assembly 3, that is, the driving connection portion 4 and the clamping assembly 3 are arranged on the two sides of the rotating disc 2, respectively. The driving connection portion 4 can be used to connect the external driving structure. Specifically, the driving connection portion 4 is a hexagonal bolt head structure, so that a hexagonal sleeve can be fitted on the driving connection portion 4 by sleeving. Figure 5As shown, the electric screw gun 5 is connected with the driving connection part 4, and the output end of the electric screw gun 5 is provided with a hexagonal sleeve. When the electric screw gun 5 is started, torque can be output to drive the rotating disc 2 to rotate, thereby rotating the clamped nut 6 and completing the assembly of the nut 6. Similarly, in addition to driving the rotating disc 2 to rotate by using external facilities, the rotating disc 2 can also be manually rotated to realize the rotation of the nut 6, such as Figure 4 As shown, the above two rotating modes can be selected according to the actual environmental requirements, providing more scheme options.

[0039] The rotating disc 2 is composed of a rotating frame 2.2 and a rotating ring 2.1. The rotating frame 2.2 connects the rotating ring 2.1 and the fixed seat 1. Specifically, the rotating frame 2.2 is provided with three roots and is uniformly distributed along the circumference of the fixed seat 1. One end of the rotating frame 2.2 is connected to the fixed seat 1, and the other end of the rotating frame 2.2 is fixed to the inner side of the rotating ring 2.1. This not only ensures the structural strength of the rotating disc 2, but also facilitates the staff to grasp and rotate the rotating disc 2, thereby improving the rotating efficiency.

Claims

1. A nut assembly tool characterized by, The utility model relates to a fixing seat is equipped with rotating disc and several clamping assemblies that are evenly arranged along the circumference of fixing seat, the clamping assembly includes guide rod and guide sleeve, the guide sleeve is elastically connected and slidingly connected on the guide rod, the guide sleeve is equipped with clamping rod outside, the clamping rod is equipped with clamping part away from the guide sleeve side.

2. The nut assembly tool of claim 1, wherein: One end of the guide rod is fixedly connected with the fixing seat, and the other end of the guide rod is provided with a limiting portion.

3. The nut assembly tool of claim 2, wherein: An elastic member is sleeved on the guide rod, one end of the elastic member abuts against the limiting portion, and the other end of the elastic member abuts against the guide sleeve, and the guide sleeve is located between the elastic member and the fixing seat.

4. The nut assembly tool of claim 1, wherein: One end of the clamping part is fixed with the clamping rod, and the other end of the clamping part is wedge-shaped and faces the position where the axis of the rotating disc is located.

5. The nut assembly tool according to claim 1 or 4, wherein The clamping rod is also provided with a force applying ring.

6. The nut assembly tool according to any one of claims 1 to 4, wherein The fixing seat is also provided with a driving connecting portion away from one end of the clamping assembly.

7. The nut assembly tool according to any one of claims 1 to 4, wherein The guide sleeve is circumferentially limited with the guide rod.

8. The nut assembly tool of claim 7, wherein: The guide sleeve is provided with a limiting plane, and the fixing seat is provided with a limiting sheet matched with the limiting plane, and the limiting plane and the limiting sheet are symmetrically distributed on both sides of the guide sleeve.

9. The nut assembly tool according to any one of claims 1 to 4, wherein The rotating disc includes a rotating ring and a rotating frame, one end of the rotating frame is fixedly connected with the fixing seat, and the other end of the rotating frame is connected to the inside of the rotating ring.

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