Joint sleeve structure

Abstract

The utility model belongs to the technical field of press machines, and particularly relates to a joint sleeve structure which comprises a device body, a worm is installed in the device body, a worm gear is further assembled in the device body, the worm gear is connected with the worm in a meshed mode, and an adjusting screw rod is arranged on the inner side of the worm gear. A joint pin shaft is installed on the inner side of the worm wheel and located at the position of the adjusting screw rod, the joint pin shaft and the adjusting screw rod are in interference fit, abrasion-resistant parts are assembled between the worm wheel and the joint pin shaft and between the adjusting screw rod and the joint pin shaft, the abrasion-resistant parts are used for protecting the joint pin shaft, the abrasion-resistant parts are joint sleeves, and the joint sleeves are arranged on the outer side of the joint pin shaft. A plurality of clamping structures are arranged between the joint sleeve and the joint pin shaft, the clamping structures are used for installing the joint sleeve on the outer side of the joint pin shaft, each clamping structure comprises a clamping strip, and the clamping strips are fixed on the inner side of the joint sleeve. The joint pin shaft can be prevented from being abraded, only the joint sleeve needs to be replaced, and maintenance and disassembly are convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of presses, and in particular relates to a joint sleeve structure. Background Art

[0002] A press is a mechanical device used to process metal or non-metal materials. It uses the pressure generated by a hydraulic system or a mechanical transmission system to generate relative movement between the worktable and the slide, thereby performing operations such as stamping, bending, stretching, and forming on the workpiece.

[0003] The slider mechanism of the press is an important part of the press. It is mainly composed of sliders, guide rails, worm gears, adjusting screws, joint pins and other components. The function of the slider mechanism is to transmit the power of the press to the workbench, and at the same time realize the up and down movement of the slider and the adjustment of the sealing height;

[0004] In the slider mechanism of the press machine, a worm gear is provided inside the slider, which can drive a sealing height adjustment device to move to adjust the sealing height. The sealing height refers to the distance between the slider and the workbench when the slider is at the lowest point, which directly affects the working efficiency of the press machine and the quality of the workpiece. The adjusting screw and the joint pin shaft adopt interference fit. One end of the adjusting screw is connected to the worm gear, and the other end is connected to the joint pin shaft. One end of the joint pin shaft is connected to the slider, and the other end is connected to the workbench. By rotating the worm gear, the length of the adjusting screw can be changed, thereby changing the size of the sealing height;

[0005] However, the existing press slider mechanism has some problems and disadvantages, mainly as follows: when the press is running, the adjusting screw makes a swinging motion, causing friction with the worm gear, which will wear out over time, resulting in inaccurate readings and affecting the adjustment accuracy of the sealing height;

[0006] Therefore, based on the existing technology, it is necessary to propose a novel joint sleeve structure. Utility Model Content

[0007] The utility model aims to provide a joint sleeve structure, which can avoid the wear of the joint pin shaft, and only needs to replace the joint sleeve, so the maintenance and disassembly are convenient and fast.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A joint sleeve structure, comprising a device body, a worm is installed inside the device body, a worm wheel is also installed inside the device body, and the worm wheel is meshed with the worm, an adjusting screw is arranged inside the worm wheel, a joint pin is installed inside the worm wheel and at the position of the adjusting screw, and the joint pin and the adjusting screw are in interference fit;

[0010] Wear-resistant parts are installed between the worm wheel, the adjusting screw and the joint pin shaft, and the wear-resistant parts are used to protect the joint pin shaft.

[0011] The wear-resistant part is a joint sleeve, which is arranged on the outside of the joint pin. A plurality of clamping structures are arranged between the joint sleeve and the joint pin, and the clamping structures are used to install the joint sleeve on the outside of the joint pin.

[0012] Each of the snap-in structures includes a snap-in strip fixed on the inner side of the joint sleeve, a snap-in block fixed on one end of the snap-in strip close to the joint pin, a plurality of slots matching the snap-in strip and the snap-in block are arranged on the outer side of the joint pin, and the snap-in strip and the snap-in block are snapped into the slots.

[0013] The joint sleeve is made of flexible material.

[0014] The outer diameter of the snap-in block is greater than the outer diameter of the snap-in strip.

[0015] The four end corners of the snap-in block are all provided with inclined surfaces.

[0016] The technical effects achieved by the utility model are:

[0017] The utility model adds a joint sleeve outside the original joint pin shaft to avoid the wear of the joint pin shaft. At the same time, because the joint pin shaft and the adjusting screw are installed by interference fit, it is inconvenient to disassemble during maintenance. This structure only needs to replace the joint sleeve, and maintenance and disassembly are convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the existing structure in the utility model;

[0020] Figure 3 It is a schematic diagram of the structure in the present application of the utility model;

[0021] Figure 4 This utility model Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 It is a schematic diagram of the structure among the snap-in strip, the snap-in block and the joint sleeve in the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Adjusting screw; 2. Worm gear; 3. Joint pin; 4. Worm; 5. Joint sleeve; 6. Snap-in strip; 7. Snap-in block; 8. Inclined surface; 9. Device body. DETAILED DESCRIPTION

[0025] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0026] like Figure 1-5 As shown, a joint sleeve structure includes a device body 9, a worm 4 is installed inside the device body 9, a worm wheel 2 is also installed inside the device body 9, and the worm wheel 2 is meshed and connected with the worm 4. Through the setting of the worm 4, the worm 4 drives the worm wheel 2 to rotate, an adjusting screw 1 is arranged on the inner side of the worm wheel 2, and a joint pin 3 is installed on the inner side of the worm wheel 2 and at the position of the adjusting screw 1, and the joint pin 3 and the adjusting screw 1 are interference fit;

[0027] Through the meshing connection between the worm 4 and the worm wheel 2, when the worm 4 rotates, the worm wheel 2 can be driven to rotate, and the adjusting screw 1 can be driven to rotate through the joint pin 3, thereby completing the driving step of rotating the adjusting screw 1;

[0028] Wear-resistant parts are installed between the worm wheel 2 and the adjusting screw 1 and the joint pin 3, and the wear-resistant parts are used to protect the joint pin 3.

[0029] See attached Figure 4 The wear-resistant part is a joint sleeve 5, which is made of a flexible material and is used to provide a corresponding wear-resistant effect for the joint pin 3 and prevent the joint pin 3 from being worn. The material of the joint sleeve 5 can be any one of rubber, silicone, etc. The joint sleeve 5 is arranged on the outside of the joint pin 3;

[0030] When the worm gear 2 drives the adjusting screw 1 to rotate through the joint pin 3, the joint pin 3 will be worn due to the interference fit between the adjusting screw 1 and the joint pin 3. The joint sleeve 5 is provided to protect the joint pin 3, thereby preventing the joint pin 3 from wearing.

[0031] A plurality of clamping structures are provided between the joint sleeve 5 and the joint pin 3 , and the clamping structures are used to install the joint sleeve 5 on the outside of the joint pin 3 .

[0032] See attached Figure 5Each snap-in structure includes a snap-in strip 6, and the snap-in strip 6 is fixed on the inner side of the joint sleeve 5, and a snap-in block 7 is fixed on one end of the snap-in strip 6 close to the joint pin 3. The material of the snap-in strip 6 and the snap-in block 7 is the same as that of the joint pin 3, which is a flexible material. A plurality of grooves matching with the snap-in strip 6 and the snap-in block 7 are arranged on the outer side of the joint pin 3, and the snap-in strip 6 and the snap-in block 7 are snapped into the grooves;

[0033] When inserted into the groove body on the inner side of the joint pin 3, the insertion block 7 can be used to tighten it to prevent the insertion strip 6 and the insertion block 7 from being separated, thereby achieving the effect of installing the joint sleeve 5 on the outer side of the joint pin 3. When the joint pin 3 needs to be removed, the joint sleeve 5 can be directly pulled, thereby causing the insertion strip 6 and the insertion block 7 to deform, and then the insertion strip 6 and the insertion block 7 can be pulled out of the groove body on the joint pin 3, so that the joint sleeve 5 can be replaced, and when the worm gear 2 drives the adjusting screw 1 to rotate, the joint sleeve can be directly adjusted. 5 is worn out. When replacing it, only the joint sleeve 5 needs to be replaced. The outer diameter of the snap-in block 7 is larger than the outer diameter of the snap-in strip 6. Through this arrangement, the snap-in strip 6 and the snap-in block 7 can be better stuck in the groove body inside the joint pin 3. In the absence of interference from external forces, there will be no separation. The four end corners of the snap-in block 7 are provided with inclined surfaces 8. Through the arrangement of the inclined surfaces 8, the snap-in block 7 can be better deformed through the inclined surfaces 8 when being pulled, thereby better disassembling the joint pin 3.

[0034] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A joint sleeve structure, comprising a device body (9), characterized in that: A worm (4) is installed inside the device body (9), a worm wheel (2) is also installed inside the device body (9), and the worm wheel (2) is meshed with the worm (4), an adjusting screw (1) is arranged inside the worm wheel (2), a joint pin (3) is installed inside the worm wheel (2) and at the position of the adjusting screw (1), and the joint pin (3) and the adjusting screw (1) are in interference fit; Wear-resistant parts are installed between the worm wheel (2), the adjusting screw (1) and the joint pin (3), and the wear-resistant parts are used to protect the joint pin (3).

2. A joint sleeve structure according to claim 1, characterized in that: The wear-resistant part is a joint sleeve (5), which is arranged on the outside of the joint pin (3). A plurality of clamping structures are arranged between the joint sleeve (5) and the joint pin (3), and the clamping structures are used to install the joint sleeve (5) on the outside of the joint pin (3).

3. A joint sleeve structure according to claim 2, characterized in that: Each of the snap-in structures comprises a snap-in strip (6), and the snap-in strip (6) is fixed on the inner side of the joint sleeve (5), and a snap-in block (7) is fixed on one end of the snap-in strip (6) close to the joint pin shaft (3), and a plurality of groove bodies matching with the snap-in strip (6) and the snap-in block (7) are arranged on the outer side of the joint pin shaft (3), and the snap-in strip (6) and the snap-in block (7) are snapped into the groove bodies.

4. A joint sleeve structure according to claim 2, characterized in that: The joint sleeve (5) is made of flexible material.

5. The joint sleeve structure according to claim 3, characterized in that: The outer diameter of the snap-in block (7) is greater than the outer diameter of the snap-in strip (6).

6. A joint sleeve structure according to claim 3, characterized in that: The four end corners of the snap-in block (7) are all provided with inclined surfaces (8).

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