Steel shell inner diameter detection device

Abstract

The utility model provides a steel shell inner diameter detection device which comprises a rotating shaft, a steel shell positioning assembly and a detection assembly, and the rotating shaft can rotate around the axis of the rotating shaft. The steel shell positioning assembly is arranged in the circumferential direction of the rotating shaft and comprises a first positioning assembly and a second positioning assembly, a steel shell jig for clamping a steel shell is arranged on the first positioning assembly, the second positioning assembly is connected with the first positioning assembly, and the second positioning assembly is located above the first positioning assembly; the second positioning assembly is used for positioning the steel shell, so that the steel shell and the detection assembly are coaxially arranged; the detection assembly is connected with the first positioning assembly, the detection assembly is located below the first positioning assembly, and the detection assembly can extend into the steel shell and detect the inner diameter of the steel shell. According to the utility model, the problems that the detection precision of the existing steel shell inner diameter detection device is low and the inner diameter of the steel shell is easily misjudged are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery processing equipment technical field, specifically, relate to a steel shell inner diameter detection device. BACKGROUND

[0002] The battery generally includes the roll core and the steel shell, and the roll core is contained in the steel shell.

[0003] In the production process of the battery, in order to avoid that the steel shell scratches or extrudes the battery core when the battery core is put into the steel shell, produces the bad battery, needs to detect the steel shell inner diameter size before the battery core is loaded into the steel shell. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem of low detection precision of the existing steel shell inner diameter detection device and easy misjudgment of the steel shell inner diameter.

[0005] To solve the above problem, the utility model provides a steel shell inner diameter detection device, which comprises:

[0006] A rotating shaft, which can rotate around its axis;

[0007] A steel shell positioning assembly is arranged in the circumferential direction of the rotating shaft, and the steel shell positioning assembly comprises a first positioning assembly and a second positioning assembly.

[0008] The detection assembly is connected with the first positioning assembly, and the detection assembly is located below the first positioning assembly.

[0009] Further, a first mounting seat is arranged around the outer periphery of the rotating shaft, and the first mounting seat is connected with the rotating shaft.

[0010] Furthermore, the second positioning assembly includes a first cam follower and a secondary positioning jig connected to each other. The secondary positioning jig is coaxially arranged with the detection assembly. The interior of the secondary positioning jig is hollow. The first cam follower can drive the secondary positioning jig to move in a vertical direction, so that the secondary positioning jig is mounted on the steel shell to position the steel shell.

[0011] Furthermore, the second positioning assembly also includes a first connecting rod, a connecting block and a fixed block. The two first connecting rods are arranged in parallel and spaced apart in the vertical direction. The lower ends of the two first connecting rods are connected to the first positioning assembly. The upper ends of the two first connecting rods are connected through the fixed block. The connecting block is passed through the first connecting rod. The first cam follower and the secondary positioning fixture are both arranged on the connecting block. The first cam follower can drive the connecting block to move in the vertical direction relative to the first connecting rod.

[0012] Furthermore, the inner diameter of the secondary positioning jig is the same as the outer diameter of the steel shell.

[0013] Furthermore, the second positioning assembly also includes a first elastic member, which is sleeved on the first connecting rod, and one end of the first elastic member abuts against the fixing block, and the other end of the first elastic member abuts against the connecting block.

[0014] Furthermore, it also includes a photoelectric sensor, which is arranged on the connecting block and connected to a detection rod. The detection rod passes through the connecting block and extends to the interior of the secondary positioning fixture, and the detection rod can contact the upper end of the steel shell.

[0015] Furthermore, the detection assembly includes a second cam follower and a detection jig connected to each other, and the second cam follower can drive the detection jig to move in a vertical direction, so that the detection jig extends into the interior of the steel shell to detect the inner diameter of the steel shell.

[0016] Furthermore, the detection assembly also includes a second connecting rod and a sleeve, the sleeve is connected to the first positioning assembly, the interior of the sleeve is hollow, the second connecting rod is arranged inside the sleeve, the detection fixture is arranged at the upper end of the second connecting rod, the second cam follower is arranged at the lower end of the second connecting rod, and the second cam follower passes through the interior of the sleeve and is arranged outside the sleeve, and the second cam follower can drive the second connecting rod to move in a vertical direction relative to the sleeve.

[0017] Furthermore, it also includes a first cam and a second cam, the first cam is arranged above the first mounting seat, and the second cam is arranged below the first mounting seat, the first cam and the second cam both take the rotating shaft as the center axis, the first cam is provided with a first groove for guiding the first cam follower to move back and forth in the vertical direction, the first cam follower is arranged in the first groove, the second cam is provided with a second groove for guiding the second cam follower to move back and forth in the vertical direction, and the second cam follower is arranged in the second groove.

[0018] In the steel shell inner diameter detection device described in the present invention, the second positioning component and the detection component are both connected to the first positioning component. The steel shell is positioned by the second positioning component so that the steel shell and the detection component are coaxially arranged, which can ensure the coaxiality between the steel shell and the detection component, and is beneficial to improving the accuracy of steel shell positioning, thereby improving the accuracy of detection, and can avoid the friction between the detection component and the inner wall of the steel shell caused by low detection accuracy, damaging the steel shell, and affecting the quality of the battery cell; in addition, the first positioning component, the second positioning component and the detection component are all arranged on the circumference of the rotating shaft, and the accuracy of repeated positioning is high, and the first positioning component, the second positioning component and the detection component can form an integrated independent connection structure, which is more convenient to assemble on the rotating shaft, and is also beneficial to maintenance and debugging, which is beneficial to reducing the production cost of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the steel shell inner diameter detection device provided in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the steel shell inner diameter detection device provided in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the top view of the steel shell inner diameter detection device provided in an embodiment of the present utility model;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of the steel shell detection component and the detection component provided in an embodiment of the present utility model;

[0023] Figure 5 for Figure 4 A side structural diagram of

[0024] Figure 6 for Figure 4 Schematic diagram of the rear view structure;

[0025] Figure 7 for Figure 4 Schematic diagram of the cross-sectional structure. DETAILED DESCRIPTION

[0026] The technical solutions of the utility model are clearly and fully described below with reference to the drawings. In the description of the utility model, it should be noted that the directions or position relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed in a specific direction and be operated, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In addition, in the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly and specifically limited.

[0027] In the description of the present specification, the description of the term "as an optional embodiment" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one optional embodiment or optional example of the utility model. In the present specification, the illustrative description of the above-mentioned term does not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] In combination with Figures 1 to 3 The embodiment shown provides a steel shell inner diameter detection device, which comprises: a rotating shaft 10, a steel shell positioning assembly and a detection assembly 40, wherein:

[0029] The rotating shaft 10 can rotate around its axis, the steel shell positioning assembly is arranged in the circumferential direction of the rotating shaft 10, the steel shell positioning assembly comprises a first positioning assembly 20 and a second positioning assembly 30, the first positioning assembly 20 is provided with a steel shell jig 21 for clamping the steel shell 1, the second positioning assembly 30 is connected with the first positioning assembly 20, and the second positioning assembly 30 is located above the first positioning assembly 20, the second positioning assembly 30 is used for positioning the steel shell 1, so that the steel shell 1 is coaxially arranged with the detection assembly 40, the detection assembly 40 is connected with the first positioning assembly 20, the detection assembly 40 is located below the first positioning assembly 20, the detection assembly 40 can extend into the inside of the steel shell 1, and the inner diameter of the steel shell 1 is detected.

[0030] In the steel shell inner diameter detection device provided by this embodiment, the second positioning component and the detection component are both connected to the first positioning component. The steel shell is positioned by the second positioning component so that the steel shell and the detection component are coaxially arranged, which can ensure the coaxiality between the steel shell and the detection component, and is beneficial to improving the accuracy of steel shell positioning, thereby improving the accuracy of detection, and avoiding the friction between the detection component and the inner wall of the steel shell caused by low detection accuracy, damaging the steel shell, and affecting the quality of the battery cell; in addition, the first positioning component, the second positioning component and the detection component are all arranged on the circumference of the rotating shaft, and the accuracy of repeated positioning is high. The first positioning component, the second positioning component and the detection component can form an integrated independent connection structure, which is more convenient to assemble on the rotating shaft, and is also beneficial to maintenance and debugging, which is beneficial to reducing the production cost of the battery cell.

[0031] In this embodiment, one end of the steel shell 1 facing the detection component 40 is open, and the end of the steel shell 1 facing the second positioning component 30 is closed, that is, the upper end of the steel shell 1 is closed and the lower end of the steel shell 1 is open, thereby facilitating the detection component 40 to extend into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1.

[0032] Based on the above embodiment, as an optional implementation, it further includes a first mounting seat 50, which is arranged around the outer circumference of the rotating shaft 10. The first mounting seat 50 is fixedly connected to the rotating shaft 10. When the rotating shaft 10 rotates, it can drive the first mounting seat 50 to rotate around its axis. The first mounting seat 50 is evenly arranged with multiple mounting positions along its circumference, and each mounting position is installed with a first positioning component 20. The number of second positioning components 30 and detection components 40 is the same as the number of first positioning components 20, and the upper end of each first positioning component 20 is connected to the second positioning component 30, and the lower end of each first positioning component 20 is connected to the detection component 40. Therefore, by installing multiple first positioning components 20 on the first mounting seat 50, and each first positioning component 20 having its upper end connected to the second positioning component 30 and its lower end connected to the detection component 40, it is possible to achieve multi-station rapid and continuous detection of the inner diameter of the steel shell, which is conducive to improving the detection efficiency of the inner diameter of the steel shell, thereby improving the production efficiency of the battery cell.

[0033] On the basis of the above embodiment, as an optional implementation, the first positioning assembly 20 includes a mounting plate 22, the mounting plate 22 is mounted on the first mounting seat 50, and two steel shell jigs 21 are fixedly arranged on the mounting plate 22 in the vertical direction. The steel shell jig 21 is provided with a magnetic component on the side facing the placement position of the steel shell 1, and the magnetic component is used to adsorb the side wall of the steel shell 1. Specifically, the steel shell jig 21 is provided with an adsorption groove on the side facing the placement position of the steel shell 1, and the adsorption groove is used to accommodate the steel shell 1. The shape of the adsorption groove matches the shape of the outer wall of the steel shell 1. A magnetic component is provided on the inner wall of the steel shell jig 21, and the steel shell 1 accommodated in the adsorption groove is adsorbed by the magnetic component, so that the steel shell 1 can be stably adsorbed on the magnetic component, so that the steel shell jig 21 can clamp the steel shell. As an optional implementation, the magnetic component is a magnet. Therefore, by clamping the steel shell 1 together with two steel shell jigs 21, it can be ensured that the steel shell jig 21 clamps the steel shell 1 more stably. By setting a magnetic suction part to adsorb the steel shell 1, the steel shell jig 21 clamps the steel shell 1. When separating the steel shell 1 and the steel shell jig 21, it is beneficial to reduce the friction between the steel shell 1 and the steel shell jig 21, thereby reducing the wear on the outside of the steel shell.

[0034] Based on the above embodiment, as an optional implementation method, Figures 4 to 7 As shown, the second positioning assembly 30 includes a first cam follower 31 and a secondary positioning jig 32 connected to each other. The secondary positioning jig 32 is coaxially arranged with the detection assembly 40. The interior of the secondary positioning jig 32 is hollow. The first cam follower 31 can drive the secondary positioning jig 32 to move downward in the vertical direction, so that the secondary positioning jig 32 is sleeved on the steel shell 1 to position the steel shell 1, so that the steel shell 1 clamped by the steel shell jig 21 is coaxial with the secondary positioning jig 32, thereby avoiding inaccurate inner diameter detection due to the offset of the steel shell 1 when the detection assembly 40 detects the inner diameter of the steel shell 1.

[0035] On the basis of the above embodiment, as an optional implementation manner, the second positioning assembly 30 also includes a first connecting rod 33, a connecting block 34 and a fixed block 35. The two first connecting rods 33 are arranged in parallel and spaced apart in the vertical direction. The lower ends of the two first connecting rods 33 are fixedly connected to the mounting plate 22 of the first positioning assembly 20. The upper ends of the two first connecting rods 33 are connected through the fixed block 35. The connecting block 34 is passed through the two first connecting rods 33. The first cam follower 31 and the secondary positioning fixture 32 are both arranged on the connecting block 34, wherein the first cam follower 31 is arranged at the rear end of the connecting block 34, and the secondary positioning fixture 32 is arranged at the lower end of the connecting block 34. The first cam follower 31 can drive the connecting block 34 to move relative to the first connecting rod 33 in the vertical direction, thereby driving the secondary positioning fixture 32 to move in the vertical direction, so that the secondary positioning fixture 32 can be sleeved on the upper end of the steel shell 1 to position the steel shell 1. Therefore, by setting the first connecting rod 33, the second positioning assembly 30 and the first positioning assembly 20 can be fixedly connected, and the position tolerance between the first positioning assembly 20 and the second positioning assembly 30 can be reduced. By passing the connecting block 33 through the first connecting rod 33, and setting the first cam follower 31 and the secondary positioning fixture 32 on the connecting block 33, the secondary positioning fixture 32 can be moved in the vertical direction relative to the steel shell 1, so that the secondary positioning fixture 32 can be mounted on the upper end of the steel shell 1 to correct the position of the steel shell 1.

[0036] On the basis of the above embodiment, as an optional implementation, the inner diameter of the secondary positioning jig 32 is the same as the outer diameter of the steel shell 1. Thus, when the secondary positioning jig 32 is sleeved on the upper end of the steel shell 1, the outer wall of the steel shell can be brought into contact with the inner wall of the secondary positioning jig 32, so that the steel shell 1 and the secondary positioning jig 32 are coaxially arranged, thereby making the steel shell 1 and the detection component 40 coaxially arranged. Of course, those skilled in the art can also adjust the inner diameter of the secondary positioning jig 32 and the outer diameter of the steel shell 1 according to actual conditions, so that the inner diameter of the secondary positioning jig 32 is slightly larger than the outer diameter of the steel shell 1, but the secondary positioning jig 32 can still position the steel shell 1. In this embodiment, the specific difference between the outer diameters of the secondary positioning jig 32 and the steel shell 1 is not further limited, and those skilled in the art can make adjustments according to actual conditions.

[0037] Based on the above embodiment, as an optional implementation, the second positioning assembly 30 further includes a first elastic member 36. The first elastic member 36 is sleeved on the first connecting rod 33, with one end of the first elastic member 36 abutting against the fixing block 35, and the other end of the first elastic member 36 abutting against the connecting block 34. Thus, sleeved on the first connecting rod 33, the first elastic member 36 is advantageously used to improve the repeatable positioning accuracy of the first cam follower 31 and to facilitate the resetting of the secondary positioning jig 32.

[0038] On the basis of the above embodiment, as an optional implementation manner, the steel shell inner diameter detection device also includes a first cam 70, the first cam 70 is arranged above the first mounting seat 50, the first cam 70 is arranged on the second mounting seat (not marked in the figure), and the second mounting seat is sleeved on the outside of the rotating shaft 10. When the rotating shaft 10 rotates, the second mounting seat and the first cam 70 will not rotate with the rotating shaft 10. The first cam 70 takes the rotating shaft 10 as the center axis, and the first cam 70 is provided with a first groove 71 around its outer peripheral wall to guide the first cam follower 31 to move back and forth in the vertical direction. The first cam follower 31 is arranged in the first groove 71. Therefore, by setting the first groove 71 and the first cam follower 31, when the second positioning assembly 30 rotates around the rotating shaft 10, the first cam follower 31 can make a rotational motion along the first groove 71, so that the first cam follower 31 drives the secondary positioning fixture 32 to rise and fall periodically, so as to improve the accuracy of the repeated positioning of the secondary positioning fixture 32, and can also realize the positioning of the steel shell 1 during the process of conveying the steel shell 1, and can realize continuous loading of the steel shell 1, thereby improving the efficiency of battery cell production.

[0039] Based on the above embodiment, as an optional implementation, the first groove 71 has a first position and a second position, and the first position and the second position are located at different heights. When the first cam follower 31 moves from the second position to the first position, the first cam follower 31 drives the steel shell jig 32 to move downward in the vertical direction, so that the secondary positioning jig 32 is mounted on the steel shell 1 to position the steel shell 1. In this embodiment, the height difference between the first position and the second position is not further limited. Those skilled in the art can set it according to actual circumstances, as long as it can ensure that the secondary positioning jig 32 can be mounted on the steel shell 1 to position the steel shell 1.

[0040] Based on the above embodiment, as an optional implementation, the detection assembly 40 includes a second cam follower 41 and a detection jig 42 connected to each other. The second cam follower 41 can drive the detection jig 42 to move upward in the vertical direction, so that the detection jig 42 extends into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1. Therefore, when the second cam follower 41 rotates to an appropriate position, it can drive the detection jig 42 to move vertically, thereby realizing the detection of the inner diameter of the steel shell 1.

[0041] Based on the above embodiment, as an optional implementation method, Figures 4 to 7As shown, the detection assembly 40 also includes a second connecting rod 43 and a sleeve 44. The sleeve 44 is fixedly connected to the mounting plate 22 of the first positioning assembly 20. The interior of the sleeve 44 is hollow, and one end of the mounting plate 22 connected to the sleeve 44 has a through hole that passes through its upper and lower end surfaces. The through hole is connected to the interior of the sleeve 44, and a part of the detection fixture 42 is accommodated in the through hole. The second connecting rod 43 is arranged inside the sleeve 44, and the upper end of the second connecting rod 43 is connected to the detection fixture 42. The lower end of the second connecting rod 43 is connected to the second cam follower 41, and the second cam follower 41 passes through the interior of the sleeve 44 and is arranged on the outside of the sleeve 44. The second cam follower 41 can drive the second connecting rod 43 to move relative to the sleeve 44 in the vertical direction, thereby driving the detection fixture 42 to move in the vertical direction, so that the detection fixture 42 can extend into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1. Therefore, by setting the shaft sleeve 44, the fixed connection between the detection component 40 and the first positioning component 20 can be achieved, and the position tolerance between the detection component 40 and the first positioning component 20 can be reduced. By setting the second connecting rod 43 inside the shaft sleeve 44, and setting the detection fixture 42 and the second cam follower 41 on the second connecting rod 43, the detection fixture 42 can be moved in the vertical direction relative to the steel shell 1, so that the detection fixture 42 can be extended into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1.

[0042] Based on the above embodiment, as an optional embodiment, the detection assembly 40 further includes a second elastic member 45, which is sleeved on the second connecting rod 43. One end of the second elastic member 45 abuts the inner wall of the sleeve 44, and the other end abuts the second connecting rod 43. Specifically, the sleeve 44 has a first accommodating chamber and a second accommodating chamber within it. The first accommodating chamber is connected to the through hole. The second connecting rod 43 is disposed within the first and second accommodating chambers. The second elastic member 45 is located within the second accommodating chamber, and the upper end of the second elastic member 45 abuts the inner wall of the sleeve 44. The connecting rod 44 is provided with a flange portion, which is located near the lower end of the connecting rod 44. The lower end of the second elastic member 45 abuts the flange portion. Thus, by sleeved on the second connecting rod 43, the repeatable positioning accuracy of the second cam follower 41 is improved, and the reset of the detection jig 42 is facilitated.

[0043] On the basis of the above embodiment, as an optional implementation manner, the steel shell inner diameter detection device also includes a second cam 80, and the second cam 80 is arranged below the first mounting seat 50. The second cam 80 is arranged on a third mounting seat (not marked in the figure), and the third mounting seat is sleeved on the outside of the rotating shaft 10. When the rotating shaft 10 rotates, the third mounting seat and the second cam 80 will not rotate with the rotating shaft 10. The second cam 80 takes the rotating shaft 10 as the center axis, and the second cam 80 is provided with a second groove 81 around its outer peripheral wall to guide the second cam follower 41 to move back and forth in the vertical direction. The second cam follower 41 is arranged in the second groove 81. Therefore, by setting the second groove 81 and the second cam follower 41, when the detection component 40 rotates around the rotating shaft 10, the second cam follower 41 can make a rotational motion along the second groove 81, so that the second cam follower 41 drives the detection fixture 42 to rise and fall periodically, so as to improve the accuracy of the repeated positioning of the detection fixture 42, and it can also realize the detection of the inner diameter of the steel shell 1 during the transportation of the steel shell 1, which is beneficial to improve the efficiency of battery cell production.

[0044] Based on the above embodiment, as an optional implementation, the second groove 81 has a third position and a fourth position, and the third and fourth positions are located at different heights. When the second cam follower 41 moves from the fourth position to the third position, the second cam follower 41 drives the detection jig 42 to move upward in the vertical direction, allowing the detection jig 42 to extend into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1. In this embodiment, the height difference between the third and fourth positions is not further specified. Those skilled in the art can adjust the height difference according to actual conditions, as long as it ensures that the detection jig 42 can extend into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1.

[0045] On the basis of the above embodiment, as an optional implementation manner, when the inner diameter of the steel shell 1 is within the preset range, the inner diameter of the steel shell 1 is defined as the preset inner diameter value, and the outer diameter of the detection fixture 42 is less than or equal to the preset inner diameter value. Thus, it can be ensured that the detection fixture 42 can be extended into the interior of the steel shell 1 to exclude the steel shell 1 with a smaller inner diameter, thereby avoiding the battery cell from scratching the inner wall of the steel shell 1 when it is placed inside the steel shell 1, or causing the battery cell to be squeezed, thereby reducing the productivity of defective battery cells.

[0046] On the basis of the above embodiment, as an optional implementation, the steel shell inner diameter detection device also includes a photoelectric sensor 60. The photoelectric sensor 60 is set on the connecting block 34, and the photoelectric sensor 60 is connected to the detection rod 61. The detection rod 61 extends through the connecting block 34 to the inside of the secondary positioning fixture 32. The detection rod 61 can contact the upper end of the steel shell 1. The photoelectric sensor 60 can judge whether the inner diameter of the steel shell 1 is too small through the detection rod 61. Specifically, by setting the photoelectric sensor 60 and the detection rod 61, when the inner diameter of the steel shell 1 is too small, the detection fixture 42 cannot extend into the interior of the steel shell 1. The detection fixture 42 will push the steel shell 1 to move upward in the vertical direction, so that the upper end of the steel shell 1 contacts the detection rod 61, thereby triggering the photoelectric sensor 60 to issue a reminder, so that the staff can mark the steel shell 1 with poor size and remove it later, so as to avoid the steel shell 1 with poor size from flowing to the subsequent process, which is beneficial to improving the production quality of the battery cell. It should be noted that when the inner diameter of the steel shell 1 is within the preset range, the upper end of the steel shell 1 will not contact the detection rod 61 , and the photoelectric sensor 60 will not be triggered.

[0047] Based on the above embodiment, as an optional implementation, the steel shell ejection device further includes a driving member 90, which is connected to the rotating shaft 10 and is used to drive the rotating shaft 10 to rotate. As an optional implementation, the driving member 90 can be a motor, and is matched with a transmission member such as a transmission wheel or a synchronous belt to achieve a transmission connection.

[0048] The following combination Figures 1 to 7 The working principle of the steel shell inner diameter detection device provided in this embodiment is described as follows:

[0049] After the steel shell 1 is transferred from the previous workstation to the steel shell jig 21, the driving member 90 drives the rotating shaft 10 to rotate, and the rotating shaft 10 drives the first positioning assembly 20, the second positioning assembly 30 and the detection assembly 40 to rotate, and the first cam follower 31 rotates along the first groove 71, and the first cam follower 31 drives the secondary positioning jig 32 to move downward in the vertical direction, so that the secondary positioning jig 32 is sleeved on the upper end of the steel shell 1 to position the steel shell 1, and then the second cam follower 41 rotates along the second groove 81, so that the second cam follower 41 drives the detection jig 42 to move upward in the vertical direction, so that the second cam follower 41 The secondary positioning jig 32 extends into the interior of the steel shell 1 to detect the inner diameter of the steel shell 1. Subsequently, the rotating shaft 10 continues to drive the first positioning component 20, the second positioning component 30 and the detection component 40 to rotate, and the detection jig 42 moves downward in the vertical direction. The detection jig 42 is separated from the interior of the steel shell 1, and the secondary positioning jig 32 moves upward in the vertical direction. The secondary positioning jig 32 is separated from the steel shell 1. The steel shell 1 that passes the inner diameter detection is transferred to the next workstation. The rotating shaft 10 drives the first positioning component 20, the second positioning component 30 and the detection component 40 to continue to rotate to perform the next inner diameter detection of the steel shell 1, and repeat the above operation.

[0050] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present utility model.

Claims

1. A steel shell inner diameter detection device, characterized in that: include: a rotating shaft capable of rotating about its axis; A steel shell positioning assembly, the steel shell positioning assembly is arranged on the circumference of the rotating shaft, and the steel shell positioning assembly includes a first positioning assembly and a second positioning assembly. The first positioning assembly is provided with a steel shell fixture for clamping the steel shell. The second positioning assembly is connected to the first positioning assembly and is located above the first positioning assembly. The second positioning assembly is used to position the steel shell so that the steel shell and the detection assembly are coaxially arranged; The detection component is connected to the first positioning component and is located below the first positioning component. The detection component can extend into the interior of the steel shell and detect the inner diameter of the steel shell.

2. The steel shell inner diameter detection device according to claim 1, characterized in that: It also includes a first mounting seat, which is arranged around the outer circumference of the rotating shaft. The first mounting seat is connected to the rotating shaft, and the rotating shaft can drive the first mounting seat to rotate around its axis. Multiple first positioning components are evenly arranged on the circumference of the first mounting seat, and the number of the second positioning components and the detection components is the same as the number of the first positioning components.

3. The steel shell inner diameter detection device according to claim 2, characterized in that: The second positioning assembly includes a first cam follower and a secondary positioning jig connected to each other. The secondary positioning jig is coaxially arranged with the detection assembly. The interior of the secondary positioning jig is hollow. The first cam follower can drive the secondary positioning jig to move in a vertical direction so that the secondary positioning jig is sleeved on the steel shell to position the steel shell.

4. The steel shell inner diameter detection device according to claim 3, characterized in that: The second positioning assembly also includes a first connecting rod, a connecting block and a fixed block. The two first connecting rods are arranged in parallel and spaced apart in the vertical direction. The lower ends of the two first connecting rods are connected to the first positioning assembly. The upper ends of the two first connecting rods are connected through the fixed block. The connecting block is passed through the first connecting rod. The first cam follower and the secondary positioning fixture are both arranged on the connecting block. The first cam follower can drive the connecting block to move in the vertical direction relative to the first connecting rod.

5. The steel shell inner diameter detection device according to claim 3, characterized in that: The inner diameter of the secondary positioning fixture is the same as the outer diameter of the steel shell.

6. The steel shell inner diameter detection device according to claim 4, characterized in that: The second positioning assembly further includes a first elastic member, which is sleeved on the first connecting rod, and one end of the first elastic member abuts against the fixing block, and the other end of the first elastic member abuts against the connecting block.

7. The steel shell inner diameter detection device according to claim 4, characterized in that: It also includes a photoelectric sensor, which is arranged on the connecting block and connected to a detection rod. The detection rod passes through the connecting block and extends to the interior of the secondary positioning fixture, and the detection rod can contact the upper end of the steel shell.

8. The steel shell inner diameter detection device according to claim 3, characterized in that: The detection assembly includes a second cam follower and a detection jig connected to each other. The second cam follower can drive the detection jig to move in a vertical direction, so that the detection jig extends into the interior of the steel shell to detect the inner diameter of the steel shell.

9. The steel shell inner diameter detection device according to claim 8, characterized in that: The detection assembly also includes a second connecting rod and a sleeve. The sleeve is connected to the first positioning assembly. The interior of the sleeve is hollow. The second connecting rod is arranged inside the sleeve. The detection fixture is arranged at the upper end of the second connecting rod. The second cam follower is arranged at the lower end of the second connecting rod, and the second cam follower passes through the interior of the sleeve and is arranged outside the sleeve. The second cam follower can drive the second connecting rod to move in a vertical direction relative to the sleeve.

10. The steel shell inner diameter detection device according to claim 8, characterized in that: It also includes a first cam and a second cam, the first cam is arranged above the first mounting seat, and the second cam is arranged below the first mounting seat, the first cam and the second cam both take the rotating shaft as the center axis, the first cam is provided with a first groove for guiding the first cam follower to move back and forth in the vertical direction, and the first cam follower is arranged in the first groove, the second cam is provided with a second groove for guiding the second cam follower to move back and forth in the vertical direction, and the second cam follower is arranged in the second groove.

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