Adsorption type bolt pre-tightening machine

Abstract

The adsorption type bolt pre-tightening machine comprises a mounting frame and a rotating shaft mechanism. The rotating shaft mechanism comprises a rotating shaft assembly mounted on one face of the mounting frame and an adsorption assembly composed of an adsorption shaft, an outer barrel and two sealing rings. The other side of the mounting rack is provided with a motor mounting position for mounting a motor for driving the rotating shaft assembly. One end and the side wall of the adsorption shaft are provided with an adsorption hole and a first air exhaust hole respectively, the two sealing rings are sleeved on two sides of the first air exhaust hole, the outer cylinder is sleeved outside the adsorption shaft and forms an air exhaust space with the sealing rings, and a second air exhaust hole in the side wall of the outer cylinder is communicated with the air exhaust space. During use, the second exhaust hole is connected with an air pump to exhaust air, so that the adsorption hole generates negative pressure to adsorb the CKD bolt; during replacement, the air pump is controlled to suspend, and the bolt can be taken down after negative pressure disappears, so that the downtime of equipment is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt pre-tightening device technical field, specifically, relate to a kind of adsorption type bolt pre-tightening machine. BACKGROUND

[0002] CKD bolt is a kind of bolt specially used for automobile connecting rod screw hole detection, referring to Figures 1-2 , Figure 1 for the pre-tightening device structure diagram of CKD bolt in prior art, Figure 2 for the rotating shaft mechanism schematic diagram of CKD bolt pre-tightening device in prior art, when using, CKD bolt is installed in the rotating shaft 01 of pre-tightening device 0, CKD bolt is screwed into the screw hole of automobile connecting rod by the rotating shaft 01 of pre-tightening device 0 driven by motor, and whether the screw hole of automobile connecting rod is qualified is obtained by the sensor feedback data built in motor.

[0003] And in prior art, CKD bolt 00 tail end is usually drilled into threaded hole, then CKD bolt 00 is inserted into one end of transmission square head assembly 02, then M4 bolt is connected to the threaded hole of CKD bolt 00 by passing through transmission square head assembly 02 from the other end of transmission square head assembly 02, so that CKD bolt 00 is fixed on transmission square head assembly 02, finally transmission square head assembly 02 is inserted into the transmission hole of rotating shaft 02, and pin 03 is hit to connect transmission square head assembly 02 and rotating shaft 01.

[0004] However, when CKD bolt needs to be replaced due to damage, pin 03 connecting transmission square head assembly 02 and rotating shaft 01 is usually removed first, and M4 bolt is removed, then new CKD bolt is drilled and replaced on transmission square head assembly, which is not only complicated, but also inefficient, resulting in long production equipment downtime, which is not conducive to production. INVENTION CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of adsorption type bolt pre-tightening machine, comprising:

[0006] mounting frame, which has vertical fixed plate;

[0007] rotating shaft mechanism, including rotating shaft assembly and adsorption assembly, one end of rotating shaft assembly is installed on one side of vertical fixed plate, the other side of vertical fixed plate has motor installation site, and motor installation site can be used to install motor to drive rotating shaft assembly;

[0008] The adsorption assembly comprises an adsorption shaft, an outer cylinder and two sealing rings, one end of the adsorption shaft is connected to the rotating shaft assembly, the other end of the adsorption shaft is provided with an adsorption hole, the side wall of the adsorption shaft is further provided with a first air extraction hole, the adsorption hole and the first air extraction hole are communicated through an air extraction channel in the adsorption shaft, the two sealing rings are sleeved outside the adsorption shaft and located on the two sides of the first air extraction hole, the outer cylinder is also sleeved outside the adsorption shaft, an air extraction space is formed between the outer cylinder, the sealing rings and the adsorption shaft, and the side wall of the outer cylinder is provided with a second air extraction hole, which is communicated with the air extraction space.

[0009] According to an embodiment of the utility model, the adsorption assembly further comprises two bearings, the two bearings are also sleeved on the adsorption shaft and located outside the two sealing rings, the outer cylinder comprises a sealing section and a bearing mounting section, and the inner diameter of the sealing section is smaller than the inner diameter of the bearing mounting section, the bearing mounting section is separately arranged at the two ends of the sealing section, the sealing section is sleeved outside the sealing ring and forms the air extraction space, and the bearing mounting section is sleeved outside the bearing.

[0010] According to an embodiment of the utility model, the adsorption shaft comprises a shaft body, an adsorption head assembly and a first transmission square head, the adsorption head assembly and the first transmission square head are separately arranged at the two ends of the shaft body, the first transmission square head is drivingly connected to the rotating shaft assembly, the adsorption hole is arranged at one end of the adsorption head assembly, the first air extraction hole is arranged on the side wall of the shaft body, and the air extraction channel penetrates through the inside of the adsorption head assembly and the shaft body to communicate the first air extraction hole with the adsorption hole.

[0011] According to an embodiment of the utility model, the end of the rotating shaft assembly away from the vertical fixing plate is provided with a first transmission square hole, and the first transmission square head is inserted into the first transmission square hole.

[0012] According to an embodiment of the utility model, the adsorption head assembly comprises a second transmission square head and an adsorption head, one end of the second transmission square head is fixed to one end of the shaft body, one end of the second transmission square head is provided with a third air extraction hole, the air extraction channel penetrates through the inside of the second transmission square head and the shaft body to communicate the first air extraction hole with the third air extraction hole, the adsorption hole is arranged at one end of the adsorption head, the other end of the adsorption head is provided with a second transmission square hole, the adsorption head is communicated with the second transmission square hole, and the second transmission square hole is sleeved on the second transmission square head.

[0013] According to an embodiment of the utility model, a transmission tooth is arranged in the adsorption hole, and the transmission tooth is arranged in the circumferential wall of the adsorption hole.

[0014] According to an embodiment of the utility model, the side wall of the first transmission square head is provided with a first through hole, the first transmission square hole is provided with a second through hole corresponding to the first through hole, the first through hole and the second through hole are opposite to each other when the first transmission square head is inserted into the first transmission square hole, and the first through hole and the second through hole are fixedly connected through a pin.

[0015] According to the embodiment of the utility model, the second transmission square head has fixing holes on two sides, the second transmission square hole has third through holes corresponding to the fixing holes on two sides, when the second transmission square hole is sleeved on the second transmission square head, the third through holes are opposite to the fixing holes, and the third through holes and the fixing holes are also fixedly connected through the pins.

[0016] The utility model has the advantages that: the adsorption assembly is arranged on the rotating shaft assembly, and the CKD bolt is adsorbed through the negative pressure generated by the adsorption assembly; when the CKD bolt needs to be replaced, the air pump only needs to be controlled to stop working, at this time, the negative pressure in the adsorption hole disappears, and the CKD bolt can be taken down and quickly replaced, so that the equipment downtime is greatly reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, will be described in detail together with the specification.

[0018] Figure 1 It is a schematic diagram of the pre-tightening device of the CKD bolt in the prior art;

[0019] Figure 2 It is a schematic diagram of the rotating shaft mechanism of the CKD bolt pre-tightening device in the prior art;

[0020] Figure 3 It is a schematic diagram of the structure of the adsorption type bolt pre-tightening machine in the embodiment;

[0021] Figure 4 It is a schematic diagram of the explosion structure of the rotating shaft mechanism in the embodiment;

[0022] Figure 5 It is a longitudinal sectional view of the adsorption assembly in the embodiment. DETAILED DESCRIPTION

[0023] The utility model will be disclosed in the following with multiple embodiments, and many practical details will be described in the following description for the purpose of clear illustration. However, it should be understood that these practical details should not be used to limit the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be drawn in a simple schematic way in the drawings.

[0024] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application, which is only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0025] Reference Figures 3-5 , Figure 3 The structure schematic diagram of the bolt pre-tightening machine is shown in the embodiment, Figure 4 The exploded structure schematic diagram of the rotating shaft mechanism is shown in the embodiment, Figure 5 The longitudinal sectional view of the adsorption assembly is shown in the embodiment. The bolt pre-tightening machine includes a mounting frame 1 and a rotating shaft mechanism 2. The mounting frame has a vertical fixed plate 11. The rotating shaft mechanism 2 includes a rotating shaft assembly 21 and an adsorption assembly 22. One end of the rotating shaft assembly 21 is installed on one side of the vertical fixed plate 11. The other side of the vertical fixed plate 11 has a motor installation position 12 for installing a motor to drive the rotating shaft assembly 21. The adsorption assembly 22 includes an adsorption shaft 221, an outer cylinder 222 and two sealing rings 223. One end of the adsorption shaft 221 is connected to the rotating shaft assembly 21, and the other end has an adsorption hole 221221. The side wall of the adsorption shaft 221 also has a first air extraction hole 22111. The adsorption hole 221221 and the first air extraction hole 22121 are connected through an air extraction channel 224 inside the adsorption shaft 221. The two sealing rings 223 are sleeved outside the adsorption shaft 221 and located on both sides of the first air extraction hole 22111. The outer cylinder 222 is also sleeved outside the adsorption shaft 221. An air extraction space 225 is formed between the outer cylinder 222, the sealing ring 223 and the adsorption shaft 21. The side wall of the outer cylinder 222 has a second air extraction hole 22211, which is connected with the air extraction space 225. In use, the second air extraction hole 22211 is connected with an air pump for air extraction, so that a negative pressure is generated in the adsorption hole 221221. At this time, one end of the CKD bolt is installed in the adsorption hole 221221, and the negative pressure in the adsorption hole 221221 adsorbs the CKD bolt in the adsorption hole. Then, the motor drives the rotating shaft assembly 21 to rotate to drive the CKD bolt to rotate, so that the automobile connecting rod screw hole detection work can be carried out. It can be understood that when the CKD bolt needs to be replaced, the air pump only needs to be controlled to stop working, at this time, the negative pressure in the adsorption hole 221221 disappears, and the CKD bolt can be taken down for quick replacement, greatly reducing the equipment downtime and improving the production efficiency.

[0026] The adsorption assembly 22 further comprises two bearings 226, which are sleeved on the adsorption shaft 221 and located outside the two sealing rings 223. The outer cylinder 222 comprises a sealing section 2221 and a bearing mounting section 2222, and the inner diameter of the sealing section 2221 is smaller than that of the bearing mounting section 2222. The bearing mounting section 2222 is arranged at two ends of the sealing section 2221. The sealing section 2221 is sleeved outside the sealing ring 223 to form the air extraction space 225, and the bearing mounting section 2222 is sleeved outside the bearing 226. In a specific implementation, the bearing 226 is fixed in the bearing mounting section 2222 by using a clasp spring.

[0027] Further, the adsorption shaft 221 comprises a shaft body 2211, an adsorption head assembly 2212 and a first transmission square head 2213. The adsorption head assembly 2212 and the first transmission square head 2213 are arranged at two ends of the shaft body 2211. The first transmission square head 2213 is in transmission connection with the rotating shaft assembly 21. An adsorption hole 221221 is arranged at one end of the adsorption head assembly 2212. A first air extraction hole 22111 is arranged on the side wall of the shaft body 2211. The air extraction channel 224 penetrates the inside of the adsorption head assembly 2212 and the shaft body 2211 to make the first air extraction hole 22111 and the adsorption hole 221221 communicate.

[0028] Specifically, one end of the rotating shaft assembly 21 away from the vertical fixed plate 11 has a first transmission square hole 211, and the first transmission square head 2213 is inserted into the first transmission square hole 211. The side wall of the first transmission square head 2213 is provided with a first through hole 22131. The first transmission square hole 211 is provided with a second through hole 2111 corresponding to the first through hole 22131. When the first transmission square head 2213 is inserted into the first transmission square hole 211, the first through hole 22131 and the second through hole 2111 are opposite to each other, and the first through hole 22131 and the second through hole 2111 are fixedly connected by a pin. In this way, during use, the adsorption shaft 221 can be completely disassembled for maintenance by removing the pin and pulling out the first transmission square head 2213 from the first transmission square hole 211, which is convenient for use.

[0029] Similarly, the adsorption head assembly 2212 comprises a second transmission square head 22121 and an adsorption head 22122. One end of the second transmission square head 22121 is fixed to one end of the shaft body 2211. One end of the second transmission square head 22121 has a third air extraction hole 221211. The air extraction channel 224 penetrates the inside of the second transmission square head 22121 and the shaft body 2211 to make the first air extraction hole 22111 and the third air extraction hole 221211 communicate. The adsorption hole 221221 is arranged at one end of the adsorption head 22122. The other end of the adsorption head 22122 has a second transmission square hole 221222. The adsorption head 221221 is in communication with the second transmission square hole 221222. The second transmission square hole 221222 is sleeved on the second transmission square head 22121.

[0030] The second transmission square head 22121 has a fixed hole 221212 on each side, and the second transmission square hole 221222 has a third through hole 221223 corresponding to the fixed hole 221212 on each side. When the second transmission square hole 221222 is sleeved on the second transmission square head 22121, the third through hole 221223 is opposite to the fixed hole 221212, and the third through hole 221223 and the fixed hole 221212 are also fixedly connected through a pin. When the adsorption head 22122 is damaged, the pin connecting the third through hole 221223 and the fixed hole 221212 can be removed, so that the adsorption head 22122 can be taken off and replaced, which is convenient to use.

[0031] Referring to the drawings. Further, the adsorption hole 221221 is provided with a transmission tooth 2212211, and the transmission tooth 2212211 is arranged in the circumferential direction of the inner wall of the adsorption hole 221221. Among them, the transmission tooth 2212211 corresponds to the teeth at the tail of the CKD bolt, and when the CKD bolt is inserted into the adsorption hole 221221, the negative pressure in the adsorption hole 221221 will suck the CKD bolt tightly, and at the same time, the transmission tooth 2212211 is engaged with the teeth at the tail of the CKD bolt, so as to transmit the torque of the rotating shaft assembly 21 to the CKD bolt for pre-tightening detection of the automobile connecting rod screw hole.

[0032] In summary, in the present application, the adsorption assembly 22 is arranged on the rotating shaft assembly 21, and the CKD bolt is adsorbed by the negative pressure generated by the adsorption assembly 22. When the CKD bolt needs to be replaced, the air pump only needs to be controlled to stop working, at this time the negative pressure in the adsorption hole 221221 disappears, and the CKD bolt can be taken off and quickly replaced, which greatly reduces the downtime of the equipment and improves the production efficiency.

[0033] The above is only an embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. An adsorptive bolt pre-tightening machine characterized by comprising: The application relates to a vertical fixed plate, a rotating shaft mechanism and an adsorption assembly. The rotating shaft mechanism comprises a rotating shaft assembly and an adsorption assembly, one end of the rotating shaft assembly is fixed to one side of the vertical fixed plate, and the other side of the vertical fixed plate is provided with a motor installation position which can be used for installing a motor to drive the rotating shaft assembly. The adsorption assembly comprises an adsorption shaft, an outer cylinder and two sealing rings, one end of the adsorption shaft is connected to the rotating shaft assembly, the other end of the adsorption shaft is provided with an adsorption hole, the side wall of the adsorption shaft is further provided with a first air extraction hole, the adsorption hole and the first air extraction hole are communicated through an air extraction channel in the adsorption shaft, the two sealing rings are arranged outside the adsorption shaft and located on the two sides of the first air extraction hole, the outer cylinder is also arranged outside the adsorption shaft, an air extraction space is formed between the outer cylinder, the sealing rings and the adsorption shaft, and the side wall of the outer cylinder is provided with a second air extraction hole which is communicated with the air extraction space. The adsorption assembly further comprises two bearings which are also arranged outside the two sealing rings on the adsorption shaft, the outer cylinder comprises a sealing section and a bearing installation section, and the inner diameter of the sealing section is smaller than the inner diameter of the bearing installation section, the bearing installation section is arranged at the two ends of the sealing section, the sealing section is arranged outside the sealing rings and forms the air extraction space, and the bearing installation section is arranged outside the bearings.

2. The adsorption type bolt pre-tightening machine according to claim 1, characterized by, The adsorption shaft comprises a shaft body, an adsorption head assembly and a first transmission square head, the adsorption head assembly and the first transmission square head are arranged at the two ends of the shaft body, the first transmission square head is in transmission connection with the rotating shaft assembly, the adsorption hole is arranged at one end of the adsorption head assembly, the first air extraction hole is arranged on the side wall of the shaft body, and the air extraction channel penetrates the inside of the adsorption head assembly and the shaft body to make the first air extraction hole communicated with the adsorption hole.

3. The adsorption type bolt pre-tightening machine according to claim 2, characterized by, One end of the rotating shaft assembly away from the vertical fixed plate is provided with a first transmission square hole, and the first transmission square head is inserted into the first transmission square hole.

4. The adsorption type bolt pre-tightening machine according to claim 3, characterized by, The adsorption head assembly comprises a second transmission square head and an adsorption head, one end of the second transmission square head is fixed to one end of the shaft body, one end of the second transmission square head is provided with a third air extraction hole, the air extraction channel penetrates the inside of the second transmission square head and the shaft body to make the first air extraction hole communicated with the third air extraction hole, the adsorption hole is arranged at one end of the adsorption head, the other end of the adsorption head is provided with a second transmission square hole, the adsorption head is communicated with the second transmission square hole, and the second transmission square hole is arranged outside the second transmission square head.

5. The adsorption type bolt pre-tightening machine according to claim 4, characterized by, A transmission tooth is arranged in the adsorption hole, and the transmission tooth is arranged on the inner wall of the adsorption hole in a circumferential direction.

6. The adsorption type bolt pre-tightening machine according to claim 5, characterized by A first through hole is arranged on the side wall of the first transmission square head, a second through hole is arranged on the first transmission square hole corresponding to the first through hole, the first through hole is opposite to the second through hole when the first transmission square head is inserted into the first transmission square hole, and the first through hole and the second through hole are fixedly connected through a pin.

7. The adsorption type bolt pre-tightening machine according to claim 5, characterized by, The two sides of the second transmission square head are respectively provided with fixed holes, the two sides of the second transmission square hole are respectively provided with third through holes corresponding to the fixed holes, the third through holes are opposite to the fixed holes when the second transmission square hole is arranged outside the second transmission square head, and the third through holes and the fixed holes are also fixedly connected through pins.

8. The adsorption type bolt pre-tightening machine according to claim 5, characterized by, ​

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