Replacement device and replacement system for fitting tool

Abstract

The utility model provides a replacing device and a replacing system for an assembling tool. The replacing device comprises a replacing body and a connecting part, the connecting part comprises a first elastic component, an unlocking head, an unlocking core rod, an outer unlocking sleeve and a clamping component; the unlocking head is provided with a connecting end matched with the connected end of the assembling tool. The outer unlocking sleeve is arranged on the periphery of the unlocking head, connected to the outer wall of the unlocking head in a sliding mode and fixedly connected with the unlocking core rod. The clamping component is embedded in the side wall of the connecting end of the unlocking head and abuts against the limiting part of the unlocking core rod. When the assembling tool is replaced, external force is applied to the outer unlocking sleeve, the outer unlocking sleeve and the unlocking core rod move relative to the unlocking head, the clamping component is all located in the side wall of the connecting end, the connected end of the assembling tool can be clamped and matched with the connecting end, external force is not applied any more, and the first elastic component drives the unlocking core rod to move reversely; the clamping component abuts against the inner wall of the connected end of the assembling tool, automatic replacement of the assembling tool is achieved, and the replacement efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly technology, and specifically relates to a tool replacement device and replacement system for assembly tools. Background Technology

[0002] With the upgrading and transformation of modern industrial products, bolts on products are often tightened using assembly tools such as sockets and wrenches during the assembly process on the production line. Currently, robotic tightening equipment is mainly used to connect assembly tools to achieve the tightening of bolts corresponding to the specifications of the assembly tools. However, due to the diversified needs of products, when tightening bolts of different products at the same workstation, the specifications of the bolts are often different, requiring the change of assembly tools for tightening the bolts. This results in a high frequency and success rate of requiring the change of assembly tools on the production line.

[0003] However, the tool replacement for assembly in traditional robotic tightening equipment is often done manually, which is not only wasteful of manpower but also inefficient. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the prior art, the replacement of assembly tools is often done manually, which not only wastes manpower but is also inefficient.

[0005] To solve the above-mentioned technical problems, this utility model discloses a tool replacement device for assembly, comprising: a replacement body and a connecting part, the connecting part including a first elastic member, an unlocking head, an unlocking core rod, an outer unlocking sleeve, and a snap-fit ​​member; one end of the unlocking head is fixedly connected to one end of the replacement body, and the other end is provided with a connecting end, which is used to adapt to the connected end of the assembly tool, and the unlocking head has a connecting hole inside; the first elastic member and the unlocking core rod are located in the connecting hole of the unlocking head, and the two ends of the first elastic member abut against one end of the replacement body and one end of the unlocking core rod, respectively; the unlocking core rod is slidably connected to the inner wall of the unlocking head, and a limiting part is provided on the side wall of the end of the unlocking core rod away from the first elastic member; the outer unlocking sleeve is sleeved on the outer periphery of the unlocking head, slidably connected to the outer wall of the unlocking head, and fixedly connected to the unlocking core rod; the two ends of the unlocking head protrude from the two ends of the outer unlocking sleeve; the snap-fit ​​member is embedded in the side wall of the connecting end of the unlocking head and abuts against the limiting part of the unlocking core rod.

[0006] When changing the assembly tool, an external force is applied to the outer unlocking sleeve to move the outer unlocking sleeve and the unlocking core rod relative to the unlocking head in the direction of pressing the first elastic member, so that the locking member is completely located inside the side wall of the connecting end. The connected end of the assembly tool can be sleeved on the outer periphery of the connecting end and locked and matched with the connecting end. After the connected end of the assembly tool is locked with the connecting end, no external force is applied to the outer unlocking sleeve. Under the action of the first elastic member, the outer unlocking sleeve and the unlocking core rod move relative to the unlocking head in the direction of stretching the first elastic member, so that the locking member at least partially protrudes from the side wall of the connecting end and abuts against the inner wall of the connected end of the assembly tool. The connected end of the assembly tool is fixedly connected to the connecting part.

[0007] By adopting the above technical solution, when replacing the assembly tool, an external force is applied to the outer unlocking sleeve, causing the outer unlocking sleeve and the unlocking core rod to move relative to the unlocking head in the direction of pressing the first elastic member. This ensures that the locking member is entirely located within the side wall of the connecting end, allowing the connected end of the assembly tool to be locked and fitted with the connecting end. After the connected end of the assembly tool is locked with the connecting end, no further external force is applied to the outer unlocking sleeve. Under the action of the first elastic member, the outer unlocking sleeve and the unlocking core rod move relative to the unlocking head in the direction of stretching the first elastic member. This causes the locking member to at least partially protrude from the side wall of the connecting end and abut against the connected end of the assembly tool, thus fixing the assembly tool to the connecting part. This achieves rapid replacement of the assembly tool and improves replacement efficiency.

[0008] According to another specific embodiment of the present invention, the tool replacement device for assembly disclosed in the embodiment of the present invention further includes a connecting member in the connecting part. The unlocking head is provided with a through connecting groove. After the connecting member passes through the connecting groove, the unlocking core rod and the outer unlocking sleeve are fixedly connected.

[0009] By adopting the above technical solution, a connecting member that can pass through the connecting groove of the unlocking head is provided to fix the unlocking core rod and the outer unlocking sleeve, thereby enabling the outer unlocking sleeve and the unlocking core rod to move together relative to the unlocking head, thereby causing the snap-fit ​​member to at least partially protrude from the side wall of the connecting end or be entirely located within the side wall of the connecting end, so as to realize the snap-fit ​​adaptation and fixed connection between the assembly tool and the connecting part.

[0010] According to another specific embodiment of the present invention, the tool replacement device for assembly disclosed in the embodiment of the present invention includes a first limiting part and a second limiting part for the limiting part of the unlocking core rod, wherein the second limiting part is further away from the first elastic member relative to the first limiting part; when the locking member abuts against the first limiting part, the locking member at least partially protrudes from the side wall of the connecting end; when the locking member abuts against the second limiting part, the locking member is entirely located within the side wall of the connecting end.

[0011] By adopting the above technical solution, by setting a first limiting part and a second limiting part on the unlocking core rod, the locking member abuts against the first limiting part or the second limiting part, so that the locking member at least partially protrudes from the side wall of the connecting end or is entirely located within the side wall of the connecting end.

[0012] According to another specific embodiment of the present invention, the tool replacement device for assembly disclosed in the embodiment of the present invention has a third limiting part provided on the outer periphery of the connecting end.

[0013] By adopting the above technical solution, the third limiting part on the outer periphery of the connecting end can limit the position of the assembly tool to be stuck on the connecting part. This can avoid the problem of excessive sticking, which would make it inconvenient to replace the assembly tool, and also avoid the situation where the assembly tool is not securely stuck if the sticking is too small.

[0014] According to another specific embodiment of the present invention, the tool replacement device for assembly disclosed in this embodiment includes a replacement body comprising: a housing, a rotatable shaft, a second elastic member, and a connecting shaft. The housing is provided with a through shaft hole. The rotatable shaft, the second elastic member, and the connecting shaft are sequentially located within the through shaft hole of the housing and are clearance-fitted with the housing. One end of the connecting shaft protrudes from one end of the housing. One end of the unlocking head is fixedly connected to the groove inside one end of the connecting shaft. One end of the rotatable shaft is slidably connected to the inner wall of the groove at the other end of the connecting shaft. The second elastic member is located on the outer periphery of one end of the rotatable shaft, and its two ends abut against the rotatable shaft and the connecting shaft, respectively.

[0015] Using the above technical solution, one end of the unlocking head is fixedly connected to the groove at one end of the connecting shaft; one end of the rotatable shaft is slidably connected to the inner wall of the groove at the other end of the connecting shaft, so that the distance between the connecting end of the unlocking head and the rotatable shaft can be adjusted. When tightening bolts or screws with the assembly tool connected to the connecting end, the specific position of the assembly tool can be adjusted.

[0016] According to another specific embodiment of the present invention, the replacement device for assembly tools disclosed in the embodiment of the present invention further includes a first sensor and a positioning component. The positioning component is located inside the housing and fixed to the outer wall of the rotatable shaft, and the first sensor is fixed to the housing. During the rotation of the rotatable shaft, when the distance between the positioning component and the first sensor is less than or equal to a first distance threshold, the first sensor can sense the positioning component.

[0017] By adopting the above technical solution, before changing the assembly tool, the rotatable shaft rotates, causing the positioning component fixed to the outer wall of the rotatable shaft to rotate until the distance between the positioning component and the first sensor is less than or equal to the first distance threshold. The first sensor can sense the positioning component and thus obtain a signal. After the rotatable shaft stops rotating, the action of changing the assembly tool is then performed. This ensures that the connection angle between the connecting end of the unlocking head and the connected end of the assembly tool is just right, ensuring that the angle remains unchanged each time the tool is changed, and improving the accuracy of automatic tool changing.

[0018] This utility model discloses a tool replacement system, comprising: a tool replacement device and a storage device; the storage device includes a mounting part and a contact part, the mounting part being used to place the tool, and the contact part having a mounting hole; when replacing the tool, the connecting end of the unlocking head is located in the mounting hole, causing the outer unlocking sleeve to contact the contact part, and then a force is applied to the contact part, causing the outer unlocking sleeve and unlocking core rod to move relative to the unlocking head in the direction of pressing the first elastic member, so that the locking member is entirely located within the side wall of the connecting end, and the connected end of the tool can be sleeved on the outer periphery of the connecting end and locked and adapted to the connecting end; after the connected end of the tool is locked with the connecting end, the outer unlocking sleeve moves away from the contact part, and under the action of the first elastic member, the outer unlocking sleeve and unlocking core rod move relative to the unlocking head in the direction of stretching the first elastic member, so that the locking member at least partially protrudes from the side wall of the connecting end and contacts the inner wall of the connected end of the tool, and the connected end of the tool is fixedly connected to the connecting part.

[0019] By adopting the above technical solution, when replacing the assembly tool, the connecting end of the unlocking head is located in the mounting hole of the storage device. After the outer unlocking sleeve abuts against the abutting part, a force is applied to the abutting part. The outer unlocking sleeve and the unlocking core rod move relative to the unlocking head in the direction of squeezing the first elastic member, so that the locking member is completely located inside the side wall of the connecting end. The connected end of the assembly tool can be locked and matched with the connecting end. Afterwards, no force is applied to the abutting part. Under the action of the first elastic member, the outer unlocking sleeve and the unlocking core rod move relative to the unlocking head in the direction of stretching the first elastic member, so that the locking member at least partially protrudes from the side wall of the connecting end and abuts against the connected end of the assembly tool, so that the assembly tool is fixedly connected to the connecting part. This realizes the automatic replacement of the assembly tool and improves the replacement efficiency.

[0020] According to another specific embodiment of the present invention, the tool replacement system for assembly disclosed in this embodiment of the present invention further includes a column with a mounting groove on the column, and an abutment part and a mounting hole disposed in the mounting groove.

[0021] With the above technical solution, the abutment part and the mounting hole are set in the mounting groove on the column. When changing the assembly tool, the connecting end of the unlocking head can be more guided to be located in the mounting hole.

[0022] According to another specific embodiment of the present invention, the tool replacement system for assembly disclosed in the embodiment of the present invention further includes a limiting sleeve in the mounting part, the limiting sleeve being detachably fixed in the mounting groove; the limiting sleeve is provided with a limiting groove, and the limiting groove is provided with a limiting hole coaxial with the mounting hole.

[0023] Using the above technical solution, the abutting part can be set in the limiting groove of the limiting sleeve. Since the abutting part of the outer unlocking sleeve and the limiting sleeve will abut together every time the assembly tool is changed, the limiting sleeve is easily damaged if the assembly tool is changed too many times. The limiting sleeve can be detached and fixed in the installation groove for easy replacement of the limiting sleeve.

[0024] According to another specific embodiment of the present invention, the assembly tool replacement system disclosed in this embodiment of the present invention includes a storage device further comprising a base and a bracket; a column is fixed on the base, the bracket is fixed on the column, and a second sensor is provided; the mounting part includes a lifting component, a gripper assembly, a connecting plate, and a limiting block; the lifting component is fixed on the base, the gripper assembly and the connecting plate are fixed on the lifting component, the limiting block is fixed on the connecting plate, and the gripper assembly is closer to the mounting groove than the limiting block; the gripper assembly can be adapted to the side wall of the assembly tool, and the end of the assembly tool away from the connected end can be adapted to the end of the limiting block.

[0025] Using the above technical solution, the assembly tool can be placed on the limiting block and fixed to the lifting component by the gripper assembly. The lifting component can then drive the assembly tool to move up and down. The second sensor on the bracket can be used to determine whether an assembly tool is placed on the limiting block.

[0026] According to another specific embodiment of the present invention, the assembly tool replacement system disclosed in the present invention uses a sleeve or a shovel as the assembly tool. Attached Figure Description

[0027] Figure 1 A cross-sectional view of the tool replacement device for assembly provided in Embodiment 1 of this utility model;

[0028] Figure 2 A cross-sectional view of the assembly tool replacement device provided in Embodiment 1 of this utility model is shown.

[0029] Figure 3 A cross-sectional view of the storage device (containing the assembly tools) of the tool replacement system provided in Embodiment 2 of this utility model.

[0030] Figure 4 A cross-sectional view of the replacement device in the tool replacement system provided in Embodiment 2 of this utility model, wherein the outer unlocking sleeve of the replacement device abuts against the abutting part of the storage device, and all the snap-fit ​​components are located inside the side wall of the connecting end.

[0031] Figure 5 for Figure 4 A magnified view of a portion of position A in the middle;

[0032] Figure 6 A cross-sectional view of another embodiment of the tool replacement system provided in Embodiment 2 of this utility model, wherein the outer unlocking sleeve of the replacement device abuts against the abutting part of the storage device, and all the snap-fit ​​components are located inside the side wall of the connecting end.

[0033] Figure 7 The cross-sectional view of the replacement device in the tool replacement system provided in Embodiment 2 of this utility model, wherein all the snap-fit ​​components of the replacement device are located inside the side wall of the connection end, and the connected end of the assembly tool is sleeved on the outer periphery of the connection end of the replacement device.

[0034] Figure 8 for Figure 7 A magnified view of a portion of position B in the middle;

[0035] Figure 9 The snap-fit ​​component of the replacement device in the tool replacement system provided in Embodiment 2 of this utility model at least partially protrudes from the side wall of the connecting end and abuts against the inner wall of the connected end of the assembly tool. This is a cross-sectional view of the connected end of the assembly tool and the connecting part when they are fixedly connected.

[0036] Figure 10 for Figure 9 A magnified view of the area at position C.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10: Replacement device; 101: First elastic component; 102: Unlocking head; 103: Unlocking core rod; 104: Outer unlocking sleeve; 105: Snap-fit ​​component; 106: Connecting end; 107: Connecting component; 108: Connecting groove; 109: First limiting part; 110: Second limiting part; 111: Third limiting part; 112: Housing; 113: Rotatable shaft; 114: Second elastic component; 115: Connecting shaft; 116: First sensor; 117: Positioning component; 20: Storage device; 201: Abutment part; 202: Mounting hole; 203: Column; 204: Limiting sleeve; 205: Limiting hole; 206: Base; 207: Bracket; 208: Lifting component; 209: Gripper assembly; 210: Connecting plate; 211: Limiting block; 30: Assembly tool; 301: Connected end. Detailed Implementation

[0039] With the upgrading and transformation of modern industrial products, bolts on products are frequently tightened using assembly tools such as sockets and wrenches during the assembly process on the production line. Currently, robotic tightening equipment is mainly used to connect to these tools, enabling the tightening of bolts that correspond to the specifications of the tools. However, due to the diverse needs of products, different bolts on different products are often tightened at the same workstation, requiring the use of different assembly tools. This results in a high frequency (over 1000 times per shift) and a high success rate for changing assembly tools on the production line. However, the tool changes for traditional robotic tightening equipment are often done manually, which is not only wasteful of manpower but also inefficient.

[0040] To solve the above-mentioned technical problems, this utility model provides a tool replacement device for connecting assembly tools. The device includes an unlocking head with an unlocking core rod inside, connected to an outer unlocking sleeve by a pin. By abutting and pressing down on the outer unlocking sleeve or applying external force to it, the unlocking core rod is moved, thereby unlocking the steel ball at its end. The unlocking head can then connect with the assembly tool to be replaced, thus enabling tool replacement. When the outer unlocking sleeve is released, the spring abutting the unlocking core rod depresses, locking the steel ball and fixing the assembly tool to the unlocking head. This automatically completes the tool replacement, improving replacement efficiency.

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0042] Example 1

[0043] The tool replacement device for assembly provided by this utility model, such as Figure 1As shown, the device includes a replacement body and a connecting part. The connecting part includes a first elastic member 101, an unlocking head 102, an unlocking core rod 103, an outer unlocking sleeve 104, and a snap-fit ​​member 105. One end of the unlocking head 102 is fixedly connected to one end of the replacement body, and the other end is provided with a connecting end 106. The connecting end 106 is used to adapt to the connected end 301 of the assembly tool 30. The unlocking head 102 has a connecting hole inside. The first elastic member 101 and the unlocking core rod 103 are located in the connecting hole of the unlocking head 102. The two ends of the first elastic member 101 abut against one end of the replacement body and one end of the unlocking core rod 103, respectively. The unlocking core rod 103 is slidably connected to the inner wall of the unlocking head 102, and a limiting part is provided on the side wall of the end of the unlocking core rod 103 away from the first elastic member 101; the outer unlocking sleeve 104 is sleeved on the outer periphery of the unlocking head 102, slidably connected to the outer wall of the unlocking head 102, and fixedly connected to the unlocking core rod 103; the two ends of the unlocking head 102 protrude from the two ends of the outer unlocking sleeve 104; the snap-fit ​​member 105 is embedded in the side wall of the connecting end 106 of the unlocking head 102 and abuts against the limiting part of the unlocking core rod 103, and can at least partially protrude from the side wall of the connecting end 106 or be entirely located in the side wall of the connecting end 106.

[0044] It should be noted that, in this embodiment, one end of the replacement device 10 is used to connect to the assembly tool 30 to be replaced, and the other end is used to connect to the tightening system of the assembly tool 30 (specifically, the tightening shaft of the tightening system). The tightening system can tighten bolts, screws and other parts through the assembly tool 30. The assembly tool 30 can specifically be a socket or a sleeving.

[0045] Specifically, when changing the assembly tool 30, an external force is applied to the outer unlocking sleeve 104 to move the outer unlocking sleeve 104 and the unlocking core rod 103 relative to the unlocking head 102 in the direction of pressing the first elastic member 101 (e.g., Figure 1 The upward movement of the locking member 105 unlocks it, meaning the locking member 105 is entirely located within the side wall of the connecting end 106. The connected end 301 of the assembly tool 30 can be sleeved on the outer periphery of the connecting end 106 and engages with it. After the connected end 301 of the assembly tool 30 engages with the connecting end 106, no external force is applied to the outer unlocking sleeve 104. Under the action of the first elastic member 101, the outer unlocking sleeve 104 and the unlocking core rod 103 move relative to the unlocking head 102 in the direction of stretching the first elastic member 101 (i.e., the upward movement of the locking member 105 unlocks it). Figure 1 The upward movement of the middle component locks the snap-fit ​​member 105, i.e. Figure 2 As shown, the snap-fit ​​member 105 protrudes at least partially from the side wall of the connecting end 106 and abuts against the inner wall of the connected end 301 of the assembly tool 30, and the connected end 301 of the assembly tool 30 is fixedly connected to the connecting part.

[0046] In one embodiment of this utility model, such as Figure 1 As shown, the connecting part also includes a connecting member 107. The unlocking head 102 is provided with a connecting groove 108 that runs through both sides of its side wall. After the connecting member 107 passes through the connecting groove 108, it fixes the unlocking core rod 103 and the outer unlocking sleeve 104. The fixing connection method includes, but is not limited to, welding, bonding, threaded connection and snap-fit.

[0047] Specifically, by providing a connecting member 107 that can pass through the connecting groove 108 of the unlocking head 102, the unlocking core rod 103 and the outer unlocking sleeve 104 are fixedly connected, thereby enabling the outer unlocking sleeve 104 and the unlocking core rod 103 to move together relative to the unlocking head 102, thereby causing the snap-fit ​​member 105 to at least partially protrude from the side wall of the connecting end 106 or be entirely located within the side wall of the connecting end 106, so as to achieve snap-fit ​​adaptation and fixed connection between the assembly tool 30 and the connecting end of the connecting part.

[0048] In one embodiment of this utility model, such as Figure 1 As shown, the limiting portion of the unlocking core 103 includes a first limiting portion 109 and a second limiting portion 110. The second limiting portion 110 is further away from the first elastic member 101 relative to the first limiting portion 109. When the locking member 105 abuts against the first limiting portion 109, the locking member 105 is locked, and the locking member 105 at least partially protrudes from the side wall of the connecting end 106. When the locking member 105 abuts against the second limiting portion 110, the locking member 105 is unlocked, and the locking member 105 is entirely located within the side wall of the connecting end 106. In one specific embodiment, the locking member 105 can be a steel ball. The first limiting portion 109 and the second limiting portion 110 can both be limiting grooves. The connecting end 106 of the unlocking head 102 is provided with a transverse groove that extends through both ends. The diameter of one side of the transverse groove is the same as the diameter of the steel ball, and the other side of the transverse groove is an arc shape resembling a steel ball to prevent the steel ball from falling out. The first limiting part 109 or the second limiting part 110 may be located in the transverse groove.

[0049] In one embodiment of this utility model, such as Figure 1 As shown, a third limiting part 111 is provided on the outer periphery of the connecting end 106. Specifically, the third limiting part 111 can be as follows: Figure 1 The boss ring shown can also be of other shapes. The third limiting part 111 on the outer periphery of the connecting end 106 can limit the position of the assembly tool 30 when it is engaged with the connecting part. This can prevent the problem of excessive engagement causing inconvenience in replacing the assembly tool 30, and also prevent the assembly tool 30 from being engaged too insignificantly when it is engaged too insignificantly.

[0050] In one embodiment of this utility model, such as Figure 1As shown, the replacement body includes: a housing 112, a rotatable shaft 113, a second elastic member 114, and a connecting shaft 115. The housing 112 has a through shaft hole. The rotatable shaft 113, the second elastic member 114, and the connecting shaft 115 are sequentially located in the through shaft hole of the housing 112 and are clearance-fitted with the housing 112. One end of the connecting shaft 115 protrudes from one end of the housing 112. One end of the unlocking head 102 is fixedly connected to the groove at one end of the connecting shaft 115. One end of the rotatable shaft 113 is slidably connected to the inner wall of the groove at the other end of the connecting shaft 115. The second elastic member 114 is located on the outer periphery of one end of the rotatable shaft 113, and its two ends abut against the rotatable shaft 113 and the connecting shaft 115, respectively.

[0051] It should be noted that the other end of the rotatable shaft 113 can be connected to the tightening shaft of the tightening system of the assembly tool 30, and in one specific embodiment, this connection can be made via a dovetail pin. One end of the rotatable shaft 113 is slidably connected to the inner wall of the groove at the other end of the connecting shaft 115, and is in clearance fit with the groove. The second elastic member 114 is located on the outer periphery of one end of the rotatable shaft 113, and its two ends abut against the rotatable shaft 113 and the connecting shaft 115 respectively, facilitating the tightening of bolts or screws by means of the assembly tool 30 connected to the connecting end 106. The housing 112 can be fixedly connected to the tightening system, specifically via a threaded connection. In one specific embodiment, the unlocking head 102 is fixedly connected to the connecting shaft 115 via a threaded connection.

[0052] In one embodiment of this utility model, such as Figure 1 As shown, the replacement body also includes a first sensor 116 and a positioning component 117. The positioning component 117 is located inside the housing 112 and fixed to the outer wall of the rotatable shaft 113. The first sensor 116 is fixed to the housing 112. During the rotation of the rotatable shaft 113, when the distance between the positioning component 117 and the first sensor 116 is less than or equal to a first distance threshold, the first sensor 116 can sense the positioning component 117.

[0053] It should be noted that the connected end 301 of the assembly tool 30 is generally square, and the shape of the connecting end 106 of the replacement device 10 is adapted to the square shape. Therefore, when replacing the assembly tool 30, the docking deviation angle of the connecting end 106 of the replacement device 10 must be within 2° each time to achieve docking between the connecting end 106 of the replacement device 10 and the connected end 301 of the assembly tool 30. Therefore, before replacing the assembly tool 30, the rotatable shaft 113 rotates to drive the positioning member 117 to rotate until the distance between the positioning member 117 and the first sensor 116 is less than or equal to a first distance threshold. At this point, the first sensor 116 can sense the positioning member 117, receive a signal, and transmit it to the controller, thereby achieving the purpose of angle correction. The specific value of the first distance threshold can be determined through experimental calibration, which is the time distance between the first sensor 116 and the positioning member 117 when the first sensor 116 just senses the positioning member 117. After the rotatable shaft 113 stops rotating, the action of changing the assembly tool 30 is performed. This ensures that the connection angle between the connecting end 106 of the unlocking head 102 and the connected end 301 of the assembly tool 30 is just right, thus improving the accuracy of the automatic replacement of the assembly tool 30.

[0054] In one specific embodiment, the first sensor 116 can be an M4 proximity switch, and the positioning component 117 can be a lever, specifically a fan blade lever or something similar. Figure 1 The trapezoidal paddle shown can also be a square paddle. To reduce sensing error, the paddle thickness is approximately 1 mm.

[0055] Example 2

[0056] To achieve automatic replacement of assembly tools, this utility model also provides an assembly tool replacement system, including: the assembly tool replacement device 10 in Embodiment 1 and... Figure 3 The storage device 20 shown.

[0057] It should be noted that in this embodiment, the storage device 20 is used to place the assembly tool 30 to be replaced, and the specific structure of the replacement device 10 has been described in Embodiment 1, so it will not be repeated in this embodiment.

[0058] like Figure 3 As shown, the storage device 20 includes a mounting part and an abutment part 201. The mounting part is used to place the assembly tool 30, and the abutment part 201 is provided with a mounting hole 202.

[0059] Specifically, when replacing the assembly tool 30, the connecting end 106 of the unlocking head 102 of the replacement device 10 is located inside the mounting hole 202, causing the outer unlocking sleeve 104 to abut against the abutment part 201. Then, a force is continuously applied to the abutment part 201, causing the outer unlocking sleeve 104 and the unlocking core rod 103 to move relative to the unlocking head 102 in the direction of pressing the first elastic member 101, thereby unlocking the locking member 105, i.e. Figures 3-5 As shown, the snap-fit ​​component 105 is entirely located within the side wall of the connecting end 106, and the connected end 301 of the assembly tool 30 can be sleeved on the outer periphery of the connecting end 106 and snap-fitted with the connecting end 106. Figure 5 and Figure 6 As shown, after the connected end 301 of the assembly tool 30 is engaged with the connecting end 106, the outer unlocking sleeve 104 moves away from the abutment part. Under the action of the first elastic member 101, the outer unlocking sleeve 104 and the unlocking core rod 103 move relative to the unlocking head 102 in the direction of stretching the first elastic member 101, thereby locking the engaging member 105, i.e. Figure 8 and Figure 9 As shown, the snap-fit ​​member 105 protrudes at least partially from the side wall of the connecting end 106 and abuts against the inner wall of the connected end 301 of the assembly tool 30, and the connected end 301 of the assembly tool 30 is fixedly connected to the connecting part.

[0060] In one embodiment of this utility model, such as Figure 3 As shown, the storage device 20 also includes a column 203, on which a mounting groove is provided. An abutment portion 201 and a mounting hole 202 are disposed within the mounting groove. This allows for more precise guidance when changing the assembly tool 30, ensuring the connecting end 106 of the unlocking head 102 is positioned within the mounting hole 202. The abutment portion 201 can be the inner bottom wall of the mounting groove.

[0061] In one embodiment of this utility model, such as Figure 3 As shown, the mounting part also includes a limiting sleeve 204, which is detachably fixed in the mounting groove; the limiting sleeve 204 is provided with a limiting groove, and the limiting groove is provided with a limiting hole 205 coaxial with the mounting hole 202.

[0062] Specifically, such as Figure 3 As shown, the abutment part 201 can be disposed within the limiting groove of the limiting sleeve 204, specifically within the inner bottom wall of the limiting groove. Since each replacement of the assembly tool 30 involves the abutment part 201 of the outer unlocking sleeve 104 and the limiting sleeve 204 abutting, excessive replacement of the assembly tool 30 can easily damage the limiting sleeve 204. The limiting sleeve 204 can be detachably fixed within the mounting groove for easy replacement.

[0063] In one embodiment of this utility model, such as Figure 3As shown, the storage device 20 also includes a base 206 and a bracket 207; the column 203 is fixed on the base 206, the bracket 207 is fixed on the column 203, and a second sensor (not shown in the figure) is provided.

[0064] It should be noted that in this embodiment, the second sensor can be used to determine whether there is an assembly tool 30 on the limit block 211, specifically it can be a metal sensing or laser dotting sensor.

[0065] In one specific embodiment, the second sensor is a cylindrical proximity switch with external threads, which passes through a through hole provided on the bracket 207 and is fixed to the bracket 207 from the front and back by tightening nuts.

[0066] like Figure 3 As shown, the mounting section includes a lifting component 208, a gripper assembly 209, a connecting plate 210, and a limiting block 211. The lifting component 208 is fixed to the base 206, the gripper assembly 209 and the connecting plate 210 are fixed to the lifting component 208, and the limiting block 211 is fixed to the connecting plate 210. The gripper assembly 209 is closer to the mounting groove than the limiting block 211. The gripper assembly 209 can be adapted to the side wall of the assembly tool 30, and the end of the assembly tool 30 away from the connected end 301 can be adapted to one end of the limiting block 211. In this embodiment, the assembly tool 30 can be placed on the limiting block 211, and the gripper assembly 209 can be fixed to the side wall of the assembly tool 30. The lifting component 208 can drive the assembly tool 30 to rise and fall. After the assembly tool 30 is connected to the connecting end 106 of the replacement device 10, the gripper assembly 209 is released. It should be noted that the assembly tools 30 of different lengths can be made compatible by adjusting the height of the limit block 211 and the height of the gripper assembly 209, and the assembly tools 30 of different sizes can be made compatible by adjusting the shape of the end of the limit block 211 that needs to be adapted to the end of the assembly tool 30 that is away from the connected end 301.

[0067] It should be noted that, in this embodiment, the second sensor can also be used to determine the position of the connecting plate 210. The gripper assembly 209 can be fixed to the cylinder, and the cylinder can be fixed to the lifting component 208.

[0068] In one embodiment of this utility model, the assembly tool 30 is a sleeve or a sleeving.

[0069] It should be noted that when the assembly tool 30 is a sleeve, the shape of the end of the limiting block 211 that is adapted to the end of the assembly tool 30 away from the connected end 301 is as follows: Figure 3 As shown, it is convex. When the assembly tool 30 is a swivel, the shape of the end of the limiting block 211 that is adapted to the end of the assembly tool 30 away from the connected end 301 is as follows. Figure 6As shown, it is concave.

[0070] One operation for automatically changing assembly tools is as follows: First, the assembly tool is placed in the storage device. Then, the outer unlocking sleeve of the changing device contacts and presses down the abutting part of the storage device (e.g., the inner wall of the limiting groove of the limiting sleeve), causing the unlocking core rod to move upward, so that the steel ball retracts into the second limiting part (rear limiting). The unlocking head can then dock with the assembly tool, releasing the component that fixes the assembly tool (e.g., the gripper assembly). The changing device (and the assembly tool) moves upward, the first elastic member presses down, and the steel ball is squeezed into the first limiting part (front limiting), thus completing the automatic changing of the assembly tool.

[0071] Another operation for automatically changing assembly tools is as follows: First, the assembly tools are placed in the storage device. Then, the tightening system moves the entire tool changing device to a position coaxial with the limiting hole of the limiting sleeve. Next, the entire tool changing device moves downwards, causing the outer unlocking sleeve to contact and press down against the inner wall (i.e., the abutment part) of the limiting groove of the limiting sleeve. Under the reaction force of the abutment part, the outer unlocking sleeve drives the unlocking core rod upwards through the connecting component. Figure 4 and Figure 5 As shown, this causes the locking member to retract into the second limiting part, at which point the lifting member of the storage device is in the lower position. Then, the lifting member moves upward, causing the gripper assembly, connecting plate, limiting block, and assembly tool to move upward simultaneously, as shown... Figure 7 and Figure 8 As shown, the connecting end of the unlocking head can mate with the connected end of the assembly tool, and the gripper assembly can be released by a cylinder. Finally, the tightening system drives the entire assembly tool changing device to move upward, the first elastic member presses down, and squeezes the locking member into the first limiting part. At this time, after the locking member protrudes from the side wall of the connecting end, it mates with the hole of the assembly tool, and the automatic replacement of the assembly tool is completed.

[0072] The automatic angle correction operation is as follows: Before the replacement device automatically changes the assembly tool, the rotatable shaft rotates automatically until the positioning component (e.g., a lever) causes the first sensor to receive a signal, at which point the rotatable shaft stops rotating, ensuring that the structure of the connecting end at the bottom of the unlocking head (specifically, a quadrilateral structure) is consistent with the angle of the structure of the connected end of the assembly tool (specifically, a square hole).

[0073] The assembly tool replacement system disclosed in this utility model has the following beneficial effects: When replacing the assembly tool, the outer unlocking sleeve and unlocking core move relative to the unlocking head in the direction of pressing the first elastic member, so that the locking member is entirely located within the side wall of the connecting end, and the connected end of the assembly tool can be locked and fitted with the connecting end; no external force is applied to the outer unlocking sleeve, and under the action of the first elastic member, the outer unlocking sleeve and unlocking core move relative to the unlocking head in the direction of stretching the first elastic member, so that the locking member at least partially protrudes from the side wall of the connecting end and abuts against the connected end of the assembly tool, thereby fixing the assembly tool to the connecting part, realizing automatic replacement of the assembly tool, and improving replacement efficiency. For assembly tools of different lengths and sizes, the height and size of the mounting part can be adjusted to accommodate various types of assembly tools. In addition, through the first sensor and positioning member, the angle of the connecting end of the replacement device is controlled within 2° each time, thereby ensuring that the angle of the assembly tool is consistent each time.

[0074] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived from the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0075] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0076] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0077] The terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A tool changing device for assembly, characterized in that, include: The body and connecting part are replaced. The connecting part includes a first elastic member, an unlocking head, an unlocking core rod, an outer unlocking sleeve, and a snap-fit ​​member. One end of the unlocking head is fixedly connected to one end of the body, and the other end is provided with a connecting end. The connecting end is used to adapt to the connected end of the assembly tool. The unlocking head has a connecting hole inside. The first elastic member and the unlocking core rod are located in the connecting hole of the unlocking head. The two ends of the first elastic member abut against one end of the replacement body and one end of the unlocking core rod, respectively. The unlocking core rod is slidably connected to the inner wall of the unlocking head, and a limiting part is provided on the side wall of the end of the unlocking core rod away from the first elastic member. The outer unlocking sleeve is fitted around the outer periphery of the unlocking head, slidably connected to the outer wall of the unlocking head, and fixedly connected to the unlocking core rod; the two ends of the unlocking head protrude from the two ends of the outer unlocking sleeve. The snap-fit ​​component is embedded in the side wall of the connecting end of the unlocking head and abuts against the limiting part of the unlocking core rod; When replacing the assembly tool, an external force is applied to the outer unlocking sleeve to move the outer unlocking sleeve and the unlocking core rod relative to the unlocking head in the direction of pressing the first elastic member, so that the locking member is entirely located inside the side wall of the connecting end. The connected end of the assembly tool can be sleeved on the outer periphery of the connecting end and locked and adapted to the connecting end. After the connected end of the assembly tool is locked with the connecting end, no external force is applied to the outer unlocking sleeve. Under the action of the first elastic member, the outer unlocking sleeve and the unlocking core rod move relative to the unlocking head in the direction of stretching the first elastic member, so that the locking member at least partially protrudes from the side wall of the connecting end and abuts against the inner wall of the connected end of the assembly tool. The connected end of the assembly tool is fixedly connected to the connecting part.

2. The tool changing device for assembly as described in claim 1, characterized in that, The connecting part further includes a connecting member. The unlocking head is provided with a through connecting groove. After the connecting member passes through the connecting groove, it fixes the unlocking core rod and the outer unlocking sleeve together.

3. The tool changing device for assembly as described in claim 1, characterized in that: The limiting portion of the unlocking core rod includes a first limiting portion and a second limiting portion, wherein the second limiting portion is further away from the first elastic member relative to the first limiting portion; When the snap-fit ​​member abuts against the first limiting portion, the snap-fit ​​member protrudes at least partially from the side wall of the connecting end; when the snap-fit ​​member abuts against the second limiting portion, the snap-fit ​​member is entirely located within the side wall of the connecting end.

4. The tool changing device for assembly as described in claim 1, characterized in that, A third limiting part is provided on the outer periphery of the connecting end.

5. The tool changing device for assembly as described in claim 1, characterized in that, The replacement body includes: a housing, a rotatable shaft, a second elastic member, and a connecting shaft, wherein the housing is provided with a through shaft hole; The rotatable shaft, the second elastic member, and the connecting shaft are sequentially located within the through shaft hole of the housing and are clearance-fitted with the housing; one end of the connecting shaft protrudes from one end of the housing. One end of the unlocking head is fixedly connected to the groove at one end of the connecting shaft; One end of the rotatable shaft is slidably connected to the inner wall of the groove at the other end of the connecting shaft; The second elastic member is located on the outer periphery of one end of the rotatable shaft, and its two ends abut against the rotatable shaft and the connecting shaft, respectively.

6. The tool changing device for assembly as described in claim 5, characterized in that, The replacement body also includes a first sensor and a positioning component. The positioning component is located inside the housing and fixed to the outer wall of the rotatable shaft. The first sensor is fixed to the housing. During the rotation of the rotatable shaft, when the distance between the positioning component and the first sensor is less than or equal to a first distance threshold, the first sensor can sense the positioning component.

7. A tool changing system for assembly, characterized in that, include: The tool changing device and storage device for assembly tools as described in any one of claims 1-6; The storage device includes a mounting part and a contact part. The mounting part is used to place the assembly tool, and the contact part is provided with a mounting hole. When replacing the assembly tool, the connecting end of the unlocking head is located inside the mounting hole, causing the outer unlocking sleeve to abut against the abutment. Then, a force is applied to the abutment, causing the outer unlocking sleeve and the unlocking core rod to move relative to the unlocking head in the direction of pressing the first elastic member. This causes the locking member to be entirely located within the side wall of the connecting end. The connected end of the assembly tool can be sleeved around the outer periphery of the connecting end and locked into place. After the connected end of the assembly tool is locked into the connecting end, the outer unlocking sleeve moves away from the abutment. Under the action of the first elastic member, the outer unlocking sleeve and the unlocking core rod move relative to the unlocking head in the direction of stretching the first elastic member. This causes the locking member to at least partially protrude from the side wall of the connecting end and abut against the inner wall of the connected end of the assembly tool. The connected end of the assembly tool is then fixedly connected to the connecting part.

8. The tool changing system for assembly as described in claim 7, characterized in that, The storage device also includes a column, on which an installation groove is provided, and the abutment part and the installation hole are disposed in the installation groove.

9. The tool changing system for assembly as described in claim 8, characterized in that, The mounting part also includes a limiting sleeve, which is detachably fixed in the mounting groove; the limiting sleeve is provided with a limiting groove, and the limiting groove is provided with a limiting hole coaxial with the mounting hole.

10. The tool changing system for assembly as described in claim 8, characterized in that, The storage device also includes a base and a bracket; the column is fixed on the base, the bracket is fixed on the column, and a second sensor is provided. The mounting part includes a lifting component, a gripper assembly, a connecting plate, and a limiting block; the lifting component is fixed on the base, the gripper assembly and the connecting plate are fixed on the lifting component, the limiting block is fixed on the connecting plate, and the gripper assembly is closer to the mounting groove than the limiting block; the gripper assembly can be adapted to the side wall of the assembly tool, and the end of the assembly tool away from the connected end can be adapted to one end of the limiting block.

11. The tool changing system for assembly as described in any one of claims 7-10, characterized in that, The assembly tool is a sleeve or a squeegee.

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