A screwdriver jig for a watch assembly line

Abstract

This utility model relates to a screwdriver fixture for a watch assembly line, belonging to the field of watch assembly equipment. It includes a mounting base, a support frame, a hanging rack, a shelf, and a locking component. The mounting base includes a base, and a mounting cylinder and a mounting rod coaxially mounted on the base. The support frame includes a supporting cylinder rotatably disposed within the mounting cylinder. The hanging rack includes several hanging rods fixedly disposed at the top of the supporting cylinder, with an electric screwdriver suspended from the end of each hanging rod away from the supporting cylinder via a cylindrical spring. Each hanging rod has a different type of screwdriver bit installed on its electric screwdriver. The shelf is mounted on the supporting cylinder and corresponds to the hanging rods, having the same number as the hanging rods. The locking component connects the mounting cylinder and the supporting cylinder, used to lock the mounting cylinder and the supporting cylinder. The locking component is configured one-to-one with the shelf and is linked to the shelf. This utility model can improve the assembly efficiency of watch back covers.

Description

Technical Field

[0001] This utility model relates to the field of watch assembly equipment, and in particular to a screwdriver fixture for watch assembly lines. Background Technology

[0002] In the watch assembly process, securing the watch case back is a crucial step in ensuring the watch's sealing, water resistance, and the safety of its internal components. Currently, the industry commonly uses screws to connect and secure the watch case back to the watch case. This method requires the use of a screwdriver, with operators manually screwing the screws into the pre-drilled threads on the watch case back to complete the assembly and securing of the case back. However, in actual operation, due to the small size of watches, the screws on the watch case back are usually small, and the screw tightening accuracy required during assembly is high. This requires operators to precisely control the position and force of the screwdriver. In the current operating mode, the worker needs to hold the screwdriver with their hand the entire time, bearing the weight of the screwdriver, and keeping the screwdriver suspended in the air, aligned with the screw hole, to tighten it. In mass production scenarios, workers often need to repeat this operation for several hours in a row. The long-term suspension of holding the screwdriver will keep the worker's arm muscles in a state of continuous tension, which can easily lead to problems such as arm soreness and muscle fatigue. This will reduce the worker's control accuracy of the screwdriver, which may not only cause assembly quality problems such as screw deviation and stripped screws, but also affect the fixing effect of the watch case back and the overall quality of the watch, and reduce the overall assembly efficiency. Based on this, the present invention provides a screwdriver fixture for watch assembly lines to solve the above problems. Utility Model Content

[0003] Based on this, the present invention provides a screwdriver fixture for a watch assembly line, including a mounting base, a support frame, a hanging bracket, a storage rack, and a locking component; the mounting base includes a base, and a mounting cylinder and a mounting rod vertically arranged on the base, the mounting rod being located inside the mounting cylinder and coaxial with the mounting cylinder; the support frame includes a support cylinder inserted into the mounting cylinder and coaxial with the mounting cylinder, the support cylinder being rotatably mounted to the mounting rod via bearings; the hanging bracket includes a plurality of hanging rods fixedly arranged at the top end of the support cylinder, the hanging rods being arranged along the radial direction of the support cylinder. Furthermore, an electric screwdriver is suspended from the end of the hanging rod away from the supporting cylinder via a cylindrical spring, and each hanging rod has a different type of screwdriver bit installed on it; a shelf is installed on the supporting cylinder and corresponding to the hanging rod, and has the same number as the hanging rod, for placing the electric screwdrivers on the corresponding hanging rod; a locking assembly is connected to the mounting cylinder and the supporting cylinder, for locking the mounting cylinder and the supporting cylinder; the locking assembly is provided one-to-one with the shelf and is linked to the shelf, so as to release the locking of the mounting cylinder and the supporting cylinder when an electric screwdriver is placed on the shelf.

[0004] In this invention, a screwdriver fixture is used to hang an electric screwdriver. The electric screwdriver is suspended from a hanging rod on a bracket by a cylindrical spring. The cylindrical spring supports the weight of the electric screwdriver. By ensuring that the screwdriver head is positioned at the correct screw-tightening height when the electric screwdriver hangs naturally, the operator does not need to bear the weight of the electric screwdriver itself when operating it. This effectively alleviates arm soreness and muscle fatigue caused by bearing the weight of the electric screwdriver, thereby improving the assembly efficiency of watch back covers.

[0005] Furthermore, in this invention, the supporting cylinder is rotatably mounted on the mounting rod. Therefore, by moving the hanging bracket, an electric screwdriver with screwdriver bits of different specifications can be rotated to the operator's face for screw-tightening operations. This facilitates the tightening of different types of screws and saves time compared to changing screwdriver bits, thereby further improving the assembly efficiency of the watch back cover. A locking assembly is provided between the mounting cylinder and the supporting cylinder to fix them together. Only when all the shelves have electric screwdrivers can the locking assembly be released, allowing the supporting cylinder to rotate relative to the mounting cylinder. Therefore, before rotating the hanging bracket to change to a different electric screwdriver, the used electric screwdriver must be returned to the shelf. This prevents the operator from rotating the hanging bracket while the electric screwdriver is hanging naturally, thus preventing the electric screwdriver from being thrown up and colliding with other structures on the workbench, and thus avoiding damage to the electric screwdriver and other parts of the workbench.

[0006] Furthermore, the shelf includes a connecting arm disposed on the supporting cylinder, the connecting arm being disposed along the radial direction of the supporting cylinder, and a storage tube for inserting an electric screwdriver being fixedly disposed at one end of the connecting arm away from the supporting cylinder.

[0007] In this embodiment, the storage tube is used for inserting an electric screwdriver, thereby enabling the electric screwdriver to be placed on the shelf. Preferably, the lower end of the storage tube has a through hole for the screwdriver bit to pass through, so as to avoid the bottom of the screwdriver bit from contacting the storage tube.

[0008] Furthermore, the side wall of the supporting cylinder has a mounting hole corresponding to the connecting arm. The connecting arm is rotatably mounted in the mounting hole via a pivot perpendicular to the connecting arm. One end of the connecting arm extends into the supporting cylinder towards the mounting rod, forming a mounting end. The locking assembly includes a vertical rod fixedly mounted on the mounting end. The vertical rod is vertically positioned, and its bottom end is bent outward to form a limiting section. The limiting section passes through a through hole on the side wall of the supporting cylinder. The inner side wall of the mounting cylinder has several insertion holes corresponding to the limiting section for inserting the limiting section. The insertion holes are evenly arranged around the axis of the mounting cylinder. An abutment seat is also fixedly mounted on the inner side wall of the supporting cylinder. A cylindrical spring is connected between the abutment seat and the bottom end of the vertical rod to push the limiting section into the insertion hole.

[0009] In this embodiment, the connecting arm is pivotally connected to the mounting hole via a pivot. When an electric screwdriver is placed in the storage tube, the weight applied to the connecting arm by the electric screwdriver will cause the mounting end of the connecting arm to tilt upwards. At this time, the lower end of the vertical rod will swing inwards, thereby causing the end of the limiting section to leave the insertion hole on the mounting cylinder, thus releasing the locking component. When the electric screwdriver is removed from the storage tube, the cylindrical spring between the abutment seat and the vertical rod can push the limiting section outwards, causing the limiting section to re-insert into the insertion hole, thus re-locking the mounting cylinder and the support cylinder.

[0010] Furthermore, the abutment seat is rotatably fitted onto the mounting rod via a bearing structure.

[0011] In this embodiment, the abutment seat is rotatably mounted on the mounting rod via a bearing structure, which can further strengthen the strength of the rotational connection structure between the supporting cylinder and the mounting rod, thereby improving the overall structural reliability of the fixture.

[0012] Furthermore, the mounting base also includes a horizontally arranged base plate, on the upper surface of which a connecting cylinder is fixedly arranged. The inner side wall of the connecting cylinder is provided with an internal thread, and a connecting screw is threadedly connected to it through the internal thread. The top end of the connecting screw is fixedly connected to the bottom end of the base.

[0013] In this embodiment, the base plate serves as a support structure for the fixture. By rotating the base and the base plate relative to each other, the height of the hanger can be adjusted, thereby adjusting the height of the electric screwdriver when it hangs down naturally, which means that the height of the screwdriver bit on the electric screwdriver can be adjusted.

[0014] Furthermore, a guide rod coaxial with the top of the mounting rod is fixedly connected, the guide rod extends upward beyond the supporting cylinder, and a connecting plate is fixedly sleeved on the top of the guide rod. A first guide ring coaxial with the guide rod is embedded in the connecting plate, and the lower end of the first guide ring extends to the lower surface of the connecting plate. An abutment plate is fixedly provided on the top of the supporting cylinder, and a second guide ring is embedded at the center of the abutment plate. The inner wall of the second guide ring is fitted against the guide rod, and... The connecting rod is conductive; a third conductive ring coaxial with the connecting rod is also embedded in the abutment plate, the upper end of the third conductive ring abuts against the lower end of the first conductive ring and is conductive with the first conductive ring; a first wire and a second wire are embedded in the hanging rod, both of which extend into the abutment plate and are conductive with the second conductive ring and the third conductive ring respectively, and the ends of the first wire and the second wire away from the abutment plate extend out of the end of the hanging rod away from the supporting cylinder to form a terminal.

[0015] In this embodiment, the first and second wires extend from the terminals formed by the hanging rod to connect to the power cord of the electric screwdriver, thereby supplying power to the electric screwdriver. The conductive rod at the top of the mounting rod and the first conductive ring in the connecting plate on the conductive rod connect to the positive and negative terminals of the power supply. The second and third conductive rings in the abutment plate respectively connect the conductive rod and the first conductive ring. Therefore, when the supporting cylinder rotates relative to the mounting rod, the first and second wires inside the hanging rod can always be connected to the positive and negative terminals of the power supply, thus providing power to the electric screwdriver. Compared to directly connecting the electric screwdriver to an external power source, this avoids the power cord of the electric screwdriver from becoming entangled with the fixture when the hanging bracket is rotated.

[0016] Furthermore, a rubber retaining ring is provided at the top of the inner wall of the mounting cylinder, and the inner wall of the rubber retaining ring is attached to the outer wall of the supporting cylinder.

[0017] In this embodiment, the rubber retaining ring on the inner wall of the mounting cylinder can protect the gap between the mounting cylinder and the supporting cylinder, preventing dust from entering.

[0018] The principle and effects of this utility model will be further explained below with reference to the above technical solution and the accompanying drawings: In this invention, a screwdriver fixture is used to hang an electric screwdriver. The electric screwdriver is suspended from a hanging rod on a bracket by a cylindrical spring. The cylindrical spring supports the weight of the electric screwdriver. By ensuring that the screwdriver head is positioned at the correct screw-tightening height when the electric screwdriver hangs naturally, the operator does not need to bear the weight of the electric screwdriver itself when operating it. This effectively alleviates arm soreness and muscle fatigue caused by bearing the weight of the electric screwdriver, thereby improving the assembly efficiency of watch back covers. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of the screwdriver fixture for a watch assembly line as described in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of part A in the middle; Figure 3 for Figure 1 A magnified view of part B in the middle section; Figure 4 This is a cross-sectional structural diagram of the mounting cylinder described in an embodiment of the present utility model.

[0020] Attached Figure

[0021] 11-Base, 12-Mounting cylinder, 121-Slot, 13-Mounting rod, 131-Bearing, 132-Connecting plate, 1321-First channel ring, 133-Conducting rod, 14-Base plate, 15-Connecting cylinder, 16-Connecting screw, 21-Supporting cylinder, 211-Mounting hole, 212-Through hole, 231-Abutting seat, 214-Abutting plate, 2141-Second conducting ring, 2142-Third conducting ring, 31-Hanging rod, 311-First wire, 312-Second wire, 41-Connecting arm, 42-Storage cylinder, 51-Vertical rod, 52-Limiting section, 6-Electric screwdriver, 7-Cylindrical spring. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1-4 A screwdriver fixture for a watch assembly line includes a mounting base, a support frame, a hanging bracket, a shelf, and a locking assembly. The mounting base includes a base 11, and a mounting cylinder 12 and a mounting rod 13 vertically mounted on the base 11. The mounting rod 13 is located inside the mounting cylinder 12 and is coaxial with the mounting cylinder 12. The support frame includes a support cylinder 21 inserted into the mounting cylinder 12 and coaxial with the mounting cylinder 12. The support cylinder 21 is rotatably mounted to the mounting rod 13 via a bearing 131. The hanging bracket includes several hanging rods 31 fixedly mounted on the top of the support cylinder 21. The hanging rods 31 are arranged along the radial direction of the support cylinder 21. An electric screwdriver 6 is hung on the end of the hanging rod 31 away from the supporting cylinder 21 via a cylindrical spring 7, and each hanging rod 6 has a different type of screwdriver bit installed on it. The shelf is installed on the supporting cylinder 21 and is set corresponding to the hanging rod 31, and has the same number as the hanging rod 31, for placing the electric screwdriver 6 on the corresponding hanging rod 31. The locking assembly is set to connect the mounting cylinder 12 and the supporting cylinder 21, and is used to lock the mounting cylinder 12 and the supporting cylinder 21. The locking assembly is set one-to-one with the shelf and is linked to the shelf, so as to release the locking of the mounting cylinder 12 and the supporting cylinder 21 when an electric screwdriver 6 is placed on the shelf.

[0023] In this invention, a screwdriver fixture is used to hang an electric screwdriver 6. The electric screwdriver 6 is hung on a hanging rod 31 of a bracket via a cylindrical spring 7. The cylindrical spring 7 supports the weight of the electric screwdriver 6. By ensuring that the screwdriver head is positioned at the correct screw-tightening height when the electric screwdriver 6 hangs naturally, the operator does not need to bear the weight of the electric screwdriver 6 when tightening screws. This effectively alleviates arm soreness and muscle fatigue caused by bearing the weight of the electric screwdriver 6, thereby improving the assembly efficiency of the watch back cover.

[0024] Furthermore, in this invention, the supporting cylinder 21 is rotatably mounted on the mounting rod 13. Therefore, by moving the bracket, the electric screwdriver 6, which is mounted on the bracket with screwdriver bits of different specifications, can be rotated to the front for screw tightening operations. This makes it convenient for operators to tighten different types of screws. Compared to changing the screwdriver bits on the electric screwdriver 6, it can save time for changing screwdriver bits, thereby further improving the assembly efficiency of the watch back cover. A locking assembly is provided between the mounting cylinder 12 and the supporting cylinder 21 to fix them together. Only when all the shelves are filled with electric screwdrivers 6 can the locking assembly be released from the mounting cylinder 12 and the supporting cylinder 21. Only then can the supporting cylinder 21 be rotated relative to the mounting cylinder 12. Therefore, before the operator rotates the rack to change to a different electric screwdriver 6, the used electric screwdriver 6 needs to be put back on the shelf. This prevents the operator from rotating the rack when the electric screwdriver 6 is hanging down, thus preventing the electric screwdriver 6 from being thrown up and colliding with other structures on the workbench, and thus preventing damage to the electric screwdriver 6 and other parts on the workbench.

[0025] In one embodiment, the shelf includes a connecting arm 41 disposed on the supporting cylinder 21. The connecting arm 41 is disposed along the radial direction of the supporting cylinder 21, and a storage tube 42 for inserting an electric screwdriver 6 is fixedly disposed at one end of the connecting arm 41 away from the supporting cylinder 21.

[0026] In this embodiment, the storage tube 42 is used for inserting the electric screwdriver 6, thereby realizing the placement of the electric screwdriver 6 on the shelf. Preferably, the lower end of the storage tube 42 has a through hole for the screwdriver bit to pass through, so as to avoid the bottom of the screwdriver bit from contacting the storage tube 42.

[0027] In one embodiment, a mounting hole 211 is provided on the side wall of the supporting cylinder 21 corresponding to the connecting arm 41. The connecting arm 41 is rotatably mounted in the mounting hole 211 via a pivot perpendicular to the connecting arm 41. One end of the connecting arm 41 extends into the supporting cylinder 21 towards the mounting rod 13, forming a mounting end. The locking assembly includes a vertical rod 51 fixedly disposed at the mounting end. The vertical rod 51 is vertically disposed, and its bottom end is bent outward to form a limiting section 52. The limiting segment 52 passes through the through hole 212 opened on the side wall of the supporting cylinder 21; the inner side wall of the mounting cylinder 12 is provided with a plurality of insertion holes for the limiting segment 52 to be inserted, and the insertion holes are evenly arranged around the axis of the mounting cylinder 12. The inner side wall of the supporting cylinder 21 is also fixedly provided with an abutment seat 231, and a cylindrical spring 7 is connected between the abutment seat 231 and the bottom end of the vertical rod 51 for pushing the limiting segment 52 into the insertion hole.

[0028] In this embodiment, the connecting arm 41 is pivotally connected to the mounting hole 211 via a pivot. When the electric screwdriver 6 is placed in the storage tube 42, the weight applied by the electric screwdriver 6 to the connecting arm 41 will cause the mounting end of the connecting arm 41 to tilt upwards. At this time, the lower end of the vertical rod 51 will swing inwards, thereby causing the end of the limiting section 52 to leave the insertion hole on the mounting cylinder 12, thus releasing the locking assembly. When the electric screwdriver 6 is removed from the storage tube 42, the cylindrical spring 7 between the abutment seat 231 and the vertical rod 51 can push the limiting section 52 outwards, causing the limiting section 52 to be reinserted into the insertion hole, thus relocking the mounting cylinder 12 and the support cylinder 21.

[0029] In one embodiment, the abutment seat 231 is rotatably sleeved on the mounting rod 13 via a bearing structure.

[0030] In this embodiment, the abutment seat 231 is rotatably mounted on the mounting rod 13 through a bearing structure, which can further strengthen the strength of the rotational connection structure between the supporting cylinder 21 and the mounting rod 13, thereby improving the overall structural reliability of the fixture.

[0031] In one embodiment, the mounting base further includes a horizontally arranged base plate 14, and a connecting cylinder 15 is fixedly arranged on the upper surface of the base plate 14. The inner sidewall of the connecting cylinder 15 is provided with an internal thread, and a connecting screw 16 is threadedly connected to it through the internal thread. The top end of the connecting screw 16 is fixedly connected to the bottom end of the base 11.

[0032] In this embodiment, the base plate 14 serves as a support structure for the fixture. By rotating the base 11 and the base plate 14 relative to each other, the height of the hanger can be adjusted, thereby adjusting the height of the electric screwdriver 6 when it hangs down naturally, which means that the height of the screwdriver bit on the electric screwdriver 6 can be adjusted.

[0033] In one embodiment, the top end of the mounting rod 13 is fixedly connected to a guide rod 133 coaxial with it. The guide rod 133 extends upward from the supporting cylinder 21. A connecting plate 132 is fixedly sleeved on the top end of the guide rod 133. A first guide ring coaxial with the guide rod 133 is embedded in the connecting plate 132, and the lower end of the first guide ring extends to the lower surface of the connecting plate 132. An abutment plate 214 is fixedly provided on the top end of the supporting cylinder 21. A second guide ring 2141 is embedded in the center of the abutment plate 214. The inner sidewall of the second guide ring 2141 is attached to the guide rod 133. 3. Conductivity; The abutment plate 214 is also embedded with a third conducting ring 2142 coaxial with the conducting rod 133. The upper end of the third conducting ring 2142 abuts against the lower end of the first conducting ring and conducts with the first conducting ring; The hanging rod 31 is embedded with a first wire 311 and a second wire 312. The first wire 311 and the second wire 312 both extend into the abutment plate 214 and conduct with the second conducting ring 2141 and the third conducting ring 2142 respectively. The ends of the first wire 311 and the second wire 312 away from the abutment plate 214 extend out of the end of the hanging rod 31 away from the supporting cylinder 21 to form a terminal.

[0034] In this embodiment, the first wire 311 and the second wire 312 extend from the terminal formed by the hanging rod 31 to connect to the power cord of the electric screwdriver 6, thereby supplying power to the electric screwdriver 6. The conductive rod 133 at the top of the mounting rod 13 and the first conductive ring in the connecting plate 132 on the conductive rod 133 are used to connect the positive and negative terminals of the power supply. The second conductive ring 2141 and the third conductive ring 2142 in the abutment plate 214 respectively connect the conductive rod 133 and the first conductive ring. Therefore, when the supporting cylinder 21 rotates relative to the mounting rod 13, the first wire 311 and the second wire 312 inside the hanging rod 31 can always be connected to the positive and negative terminals of the power supply, thereby providing power to the electric screwdriver 6. Compared to directly connecting the electric screwdriver 6 to an external power source, this avoids the power cord of the electric screwdriver 6 from becoming entangled with the fixture when the hanging bracket is rotated.

[0035] In one embodiment, a rubber retaining ring is provided at the top of the inner sidewall of the mounting cylinder 12, and the inner sidewall of the rubber retaining ring is attached to the outer sidewall of the supporting cylinder 21.

[0036] In this embodiment, the rubber retaining ring on the inner wall of the mounting cylinder 12 can protect the gap between the mounting cylinder 12 and the supporting cylinder 21, preventing dust from entering.

[0037] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A screwdriver jig for a watch assembly line, characterized by, include: The mounting base includes a base, and a mounting cylinder and a mounting rod vertically disposed on the base. The mounting rod is located inside the mounting cylinder and is coaxial with the mounting cylinder. The support frame includes a support cylinder inserted into the mounting cylinder and coaxial with the mounting cylinder, the support cylinder being rotatably mounted to the mounting rod via bearings; The bracket includes several hanging rods fixedly installed at the top of the supporting cylinder. The hanging rods are arranged along the radial direction of the supporting cylinder, and an electric screwdriver is hung on the end of the hanging rod away from the supporting cylinder by a cylindrical spring. Each hanging bracket has an electric screwdriver with a different type of screwdriver bit installed on it. A shelf, installed on the supporting cylinder and corresponding to the hanging rod, has the same number as the hanging rod and is used to place the electric screwdrivers on the corresponding hanging rod; A locking assembly is provided, connected to the mounting cylinder and the supporting cylinder, for locking the mounting cylinder and the supporting cylinder; the locking assembly is provided in a one-to-one correspondence with the shelf and is linked to the shelf, for releasing the locking of the mounting cylinder and the supporting cylinder when an electric screwdriver is placed on the shelf.

2. A screwdriver fixture for a watch assembly line according to claim 1, characterized in that, The shelf includes a connecting arm disposed on the supporting cylinder, the connecting arm being disposed along the radial direction of the supporting cylinder, and a storage tube for inserting an electric screwdriver being fixedly disposed at one end of the connecting arm away from the supporting cylinder.

3. A screwdriver fixture for a watch assembly line according to claim 2, characterized in that, The supporting cylinder has mounting holes on its sidewall corresponding to the connecting arm. The connecting arm is rotatably mounted in the mounting holes via a pivot perpendicular to the connecting arm. One end of the connecting arm extends into the supporting cylinder towards the mounting rod, forming a mounting end. The locking assembly includes a vertical rod fixedly mounted on the mounting end. The vertical rod is vertically positioned, and its bottom end is bent outward to form a limiting section. The limiting section passes through a through hole on the sidewall of the supporting cylinder. The inner sidewall of the mounting cylinder has several insertion holes corresponding to the limiting section for insertion. The insertion holes are evenly distributed around the axis of the mounting cylinder. An abutment is also fixedly mounted on the inner sidewall of the supporting cylinder. A cylindrical spring is connected between the abutment and the bottom end of the vertical rod to push the limiting section into the insertion hole.

4. A screwdriver fixture for a watch assembly line according to claim 3, characterized in that, The abutment seat is rotatably fitted onto the mounting rod via a bearing structure.

5. A screwdriver fixture for a watch assembly line according to claim 1, characterized in that, The mounting base also includes a horizontally arranged base plate, on the upper surface of which a connecting cylinder is fixedly mounted. The inner side wall of the connecting cylinder is provided with an internal thread, and a connecting screw is threadedly connected to it through the internal thread. The top end of the connecting screw is fixedly connected to the bottom end of the base.

6. A screwdriver fixture for a watch assembly line according to claim 1, characterized in that, The top end of the mounting rod is fixedly connected to a guide rod coaxial with it. The guide rod extends upward beyond the supporting cylinder. A connecting plate is fixedly sleeved on the top end of the guide rod. A first guide ring coaxial with the guide rod is embedded in the connecting plate, and the lower end of the first guide ring extends to the lower surface of the connecting plate. An abutment plate is fixedly installed on the top end of the supporting cylinder. A second guide ring is embedded in the center of the abutment plate. The inner sidewall of the second guide ring is attached to the guide rod and guides it. The connecting plate is further embedded with a third conductive ring coaxial with the conductive rod. The upper end of the third conductive ring abuts against the lower end of the first conductive ring and is conductive with the first conductive ring. A first wire and a second wire are embedded in the hanging rod. The first wire and the second wire both extend into the connecting plate and are conductive with the second conductive ring and the third conductive ring, respectively. The ends of the first wire and the second wire away from the connecting plate extend out of the end of the hanging rod away from the supporting cylinder to form a terminal.

7. A screwdriver fixture for a watch assembly line according to claim 1, characterized in that, A rubber retaining ring is also provided at the top of the inner wall of the mounting cylinder, and the inner wall of the rubber retaining ring is attached to the outer wall of the supporting cylinder.

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