Watch strap ear pin assembly device

Abstract

This invention discloses a method and apparatus for assembling watch strap lugs, used to sequentially insert lugs into watch lugs and watch strap body. The method includes: providing watch lugs and watch strap body assembled together; providing a guide plate with lug guide holes corresponding one-to-one with lug holes; moving the guide plate above the watch lugs so that the lug guide holes correspond to the lug holes; inserting the lugs into the lug guide holes; using a push pin corresponding to the lug guide hole to press the lugs into the lug guide hole to gradually insert the lugs into the lug holes of the watch lugs and watch head; removing the guide plate; measuring the height h of the upper surface of the watch lugs; using a flattening component to press the upper surface of the watch lugs according to the height h to completely press the lugs into the watch lugs and make the upper end face of the lugs flush with the upper surface of the watch lugs. Compared with the prior art, this invention can precisely insert the lugs into the watch lugs and watch head and make them flush with the upper surface of the watch lugs, resulting in a high yield rate.

Description

Technical Field

[0001] This invention relates to watch strap assembly, and more particularly to a watch strap ear pin assembly device for assembling ear pins onto a watch strap. Background Technology

[0002] While automated assembly equipment for metal watch bands is relatively mature, for nylon watch bands, which are quite soft, metal clips need to be installed at the head of the band and secured with pins. Traditionally, the metal clips and pins are manually attached to the head of the nylon watch band, which is inefficient and prone to errors.

[0003] To this end, Chinese Patent CN202023279422 discloses an ear pin assembly device and an automatic watch strap assembly machine for use in watch strap assembly machines. The ear pin assembly device for use in watch strap assembly machines includes a bracket and an ear pin mounting position provided on the bracket for placing the ear pins to be assembled; a pre-positioning component including a pre-positioning insert and a pusher for pushing the pre-positioning insert into the watch strap from one side; and a pusher component including a top post and a drive mechanism for driving the top post to reciprocate, which pushes the ear pin on the ear pin mounting position from the other side to the watch strap through the top post, and pushes out the pre-positioning insert located in the watch strap at the same time. This patent uses a pre-positioning component. When inserting the earring, a pre-positioning pin is inserted into the watch strap in place of the earring. The pre-positioning pin passes through the watch strap hole and the watch tongue hole. Then, by pushing the earring back against the pre-positioning pin, the pre-positioning pin is pushed out. This ensures that the earring can be smoothly inserted into the watch strap to form an automatic assembly. However, during this assembly method, the earring is pushed into the watch strap by the pusher on the pusher component. It is difficult to guarantee the accuracy of the insertion depth of the earring. As a result, the earring often extends into the watch strap or protrudes from the watch strap after assembly, resulting in defective products.

[0004] Therefore, there is an urgent need for a method and device for assembling watch strap lugs that can solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a watch strap lug assembly device that can precisely insert the lug into the lug and the watch head of the watch strap, and make it flush with the upper surface of the lug, resulting in a high yield rate.

[0006] To achieve the above objectives, this invention discloses a method for assembling watch strap lugs. During watch strap assembly, lugs are sequentially inserted into the lugs and the watch strap body to connect them together. The method includes: providing lugs and the watch strap body, with the watch head of the watch strap body inserted into the lugs, and the watch head and lugs having corresponding plurality of lug holes; providing a guide plate with lug guide holes corresponding one-to-one with the lug holes; and moving the guide plate above the lugs so that the lug guide holes align with the lug holes. The ear pin holes are positioned accordingly; the ear pin is inserted into the ear pin guide hole, and a push pin corresponding to the ear pin guide hole is inserted into the ear pin guide hole to press the ear pin, so that the ear pin is gradually inserted into the ear pin holes of the watch lug and the watch head; the guide plate is removed from above the watch lug to expose the watch lug, the height h of the upper surface of the watch lug is measured, and a flattening component is used to press the upper surface of the watch lug according to the height h, so that the ear pin is completely pressed into the watch lug and the upper end face of the ear pin is flush with the upper surface of the watch lug.

[0007] This invention also discloses a watch strap lug assembly device, used for assembling a watch strap by inserting the watch head into the lugs, and then sequentially inserting lugs into the lugs and the watch strap body to assemble the lugs and the watch strap body together. The watch head and lugs are provided with corresponding lug holes. The device includes: a positioning fixture for fixing the lug with the watch head inserted in the assembly position; and a guiding mechanism including a guide plate and a guiding drive unit. The guide plate is slidably mounted to the positioning fixture and can slide between a guiding clearance position and above the assembly position. The guide plate has lug guide holes corresponding to the lug holes. The guiding drive unit... The guide plate is slidable between the guide clearance position and the assembly position; the pressing mechanism includes a pressing member, a pressing drive unit that drives the pressing member to move up and down, and a first moving part that moves the pressing member horizontally. The lower pressing surface of the pressing member is provided with a pressing pin that corresponds to the ear pin guide hole and can be inserted into the ear pin guide hole. The first moving part can drive the pressing member to move between the assembly position and the first clearance position; the flattening mechanism includes a flattening member, a flattening drive unit that drives the flattening member to move up and down, and a second moving part that moves the flattening member horizontally. The lower end face of the flattening member is formed with a whole The second moving part can drive the flattening member to move between the assembly position and the second clearance position; the height detection mechanism detects the height h of the upper surface of the lug at the assembly position; the control mechanism is connected to the guiding mechanism, the pushing mechanism and the flattening mechanism. After the lug is fed to the lug guide hole, the control mechanism controls the guiding drive part to move so that the guide plate moves to the assembly position. Then, the control mechanism controls the first moving part to move so that the pushing member moves above the lug guide hole. The control mechanism controls the pushing drive part to move so that the pushing pin passes through the lug guide hole and pushes the lug, and the lug is gradually inserted. The lug is connected to the lug and the head of the watch. The first moving part is controlled to move the pushing member to the first clearance position. The guide driving part is controlled to move the guide plate to the guide clearance position. The height detection mechanism is controlled to detect the height h of the upper surface of the lug to obtain the value of the height h. The second moving part is controlled to move the flattening member to the assembly position. The flattening driving part is controlled to press the flattening member above the lug and press it down to the height h. The lug is fully pressed into the lug, and the upper end face of the lug is flush with the upper surface of the lug.

[0008] Preferably, the guide plate is provided with a plurality of guide positioning holes, the diameter of which is larger than the diameter of the ear pin guide hole, and the lower pressing surface of the pusher is provided with a plurality of guide posts corresponding to the guide positioning holes.

[0009] Preferably, the push pin and the ear needle guide hole correspond one-to-one, and the ear needle guide hole and the ear needle hole correspond one-to-one.

[0010] Preferably, the flattening mechanism further includes an upper top, which includes an upper push rod and an upper push drive unit that drives the upper push rod to move up and down. The control mechanism controls the upper push drive unit to move so that when the flattening member of the flattening mechanism presses down on the upper surface of the lug, the upper push drive unit drives the upper push rod to move up to fix the guide plate.

[0011] Preferably, the guide drive includes an elastic reset member, which is installed between the guide plate and the positioning fixture, and provides elastic force to the guide plate to slide from the guide clearance position to the assembly position.

[0012] Preferably, the guide drive unit includes a retraction drive unit and a roller rotatably mounted below the guide plate. The retraction drive unit includes a first lifting drive plate and a first lifting drive member that drives the first lifting drive plate to move up and down. The top end of the first lifting drive plate is formed with a first inclined drive surface that allows the roller to roll and slide. The first lifting drive member drives the first lifting drive plate to move up and down, and the first inclined drive surface pushes against the roller, so that while the roller is rolling, it drives the guide plate to move from the assembly position to the guide clearance position.

[0013] Specifically, the guide drive unit further includes an assembly drive unit, which includes a second lifting drive plate and a second lifting drive member that drives the second lifting drive plate to move up and down. The top end of the second lifting drive plate is formed with a second inclined drive surface that allows the roller to roll and slide. The second lifting drive member drives the second lifting drive plate to move up and down, and the second inclined drive surface pushes the roller so that while the roller is rolling, it provides a positioning force to the guide plate to move towards the assembly position.

[0014] More specifically, the watch strap lug assembly device further includes a conveying mechanism. The conveying mechanism drives the positioning fixture and the guide plate to be sequentially conveyed along the conveyor line to the primary pressing station and the secondary pressing station. The pressing mechanism and the assembly drive are installed at the primary pressing station, and the flattening mechanism and the retraction drive are installed at the secondary pressing station. The control mechanism controls the pressing mechanism and the assembly drive to move at the primary pressing station so that the guide plate is positioned at the assembly position, and the pressing pin pushes the lug through the lug guide hole. At the secondary pressing station, the control mechanism controls the flattening mechanism and the retraction drive to move, the guide plate moves to the guide clearance position, and the flattening part presses above the lug and down to a height h.

[0015] Preferably, the positioning fixture includes a lug positioning assembly and a strap positioning assembly. The lug positioning assembly is fixed on a first fixed frame and includes a lug fixing seat located at the assembly position and positioning the lug. The strap positioning assembly is mounted on a second fixed frame and includes a strap positioning platform for positioning the strap. The second fixed frame is slidably connected to the second fixed frame in the front-rear direction, and the strap positioning platform moves between a pre-loading position and a pre-assembly position, so that the watch head of the strap on the strap positioning platform moves between the strap loading position and the assembly position. A first elastic element provides a spring force to the second fixed frame to move towards the pre-assembly position.

[0016] Compared with the prior art, the present invention can first use a push pin to insert the ear pin into the watch strap and the lug through the ear pin guide hole, then detect the height of the upper surface of the lug, and use a flattening component to flatten the upper surface of the lug according to the height so that the ear pin is just inserted into the lug and the watch head of the watch strap and is flush with the upper surface of the lug, resulting in a high yield rate. Attached Figure Description

[0017] Figure 1 This is a partial structural diagram of the watch strap ear pin assembly device of the present invention at the first pressing station.

[0018] Figure 2 yes Figure 1 Enlarged view of part a.

[0019] Figure 3 yes Figure 1 Enlarged view of part b in the middle.

[0020] Figure 4 This is a structural diagram showing the guide plate moving to the assembly position.

[0021] Figure 5 yes Figure 4 The enlarged view shows that guide plate 21 is the assembly position.

[0022] Figure 6 This is a partial structural diagram of the watch strap ear pin assembly device of the present invention at the secondary pressing station, wherein the guide plate 21 is located in the clearance position.

[0023] Figure 7 This is a structural diagram of the flattening mechanism of the present invention.

[0024] Figure 8 This is a structural diagram of the lug fixing base of the present invention.

[0025] Figure 9 This is a structural diagram of the watch strap positioning component of the present invention.

[0026] Figure 10 This is a flowchart of the watch strap ear pin assembly method of the present invention. Detailed Implementation

[0027] To illustrate the technical content, structural features, objectives, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] refer to Figures 1 to 9 The present invention discloses a watch strap lug assembly device 100, which is used to assemble the watch strap body 201, after the watch head 2011 of the watch strap body 201 is inserted into the watch lug 202, and then the lugs are sequentially inserted into the watch lug 202 and the watch strap body 201 to connect the watch lug 202 and the watch strap body 201 together. The watch head 2011 is provided with a plurality of lug holes 2012, and the watch lug 202 is provided with a plurality of corresponding lug holes 2021.

[0029] refer to Figures 1 to 9 The watch strap lug assembly device 100 includes a positioning fixture 10, a guiding mechanism 20, a pushing mechanism 30, a flattening mechanism 40, a height detection mechanism, and a control mechanism. The positioning fixture 10 can fix the lug 202, to which the watch head 2011 is inserted, in the assembly position. The guiding mechanism 20 includes a guide plate 21 and a guiding drive unit 22. The guide plate 21 is slidably mounted to the positioning fixture 10 and can slide between a guide clearance position and above the assembly position. The guide plate 21 has lug guide holes 211 corresponding to the lug holes 2012 and 2021. The guiding drive unit 22 drives the guide plate 21 to slide between the guide clearance position and above the assembly position. The height detection mechanism detects the height h of the upper surface of the lug 202 at the assembly position. The pushing mechanism 30 is used to push the ear pins in the ear pin guide hole 211 sequentially into the ear pin holes 2012 and 2021 of the lug 202 and the watch head 2011. The flattening mechanism 40 is used to push the ear pins on the upper surface of the lug 202, making the upper surface of the ear pin flush with the upper surface of the lug. The control mechanism controls the actions of the guiding mechanism 20, the pushing mechanism 30, the flattening mechanism 40, and the height detection mechanism, respectively.

[0030] refer to Figure 1 and Figure 2 The pushing mechanism 30 includes a pushing member 31, a pushing drive part 32 that drives the pushing member 31 to move up and down, and a first moving part 33 that moves the pushing member 31 horizontally. The lower pressing surface of the pushing member 31 is provided with a pushing pin 311 that corresponds to the ear pin guide hole 211 and can be inserted into the ear pin guide hole 211. The first moving part 33 can drive the pushing member 31 to move between the assembly position and the first clearance position.

[0031] refer to Figure 6 and Figure 7The flattening mechanism 40 includes a flattening member 41, a flattening drive unit 42 that drives the flattening member 41 to move up and down, and a second moving part 43 that moves the flattening member 41 horizontally. The lower end surface of the flattening member 41 is formed with a flat surface. The second moving part 43 can drive the flattening member 41 to move between the assembly position and the second clearance position. The shape and tilt direction of the flat surface correspond to the upper surface of the lug 202.

[0032] The control mechanism is connected to the guide mechanism 20, the pushing mechanism 30, and the flattening mechanism 40. After the ear pin is fed into the ear pin guide hole 211, the guide drive unit 22 is controlled to move, so that the guide plate 21 moves to the assembly position. Then, the first moving part 33 is controlled to move, so that the pushing member 31 moves above the ear pin guide hole 211. The pushing drive unit 32 is then controlled to move, so that the pushing pin 311 passes through the ear pin guide hole 211 and pushes the ear pin. The ear pin is gradually inserted into the ear pin holes of the lug 202 and the watch head 2011. The first moving part 30 is then controlled to... 3. The action moves the pushing member 31 to the first clearance position, controls the guide drive 22 to move the guide plate 21 to the guide clearance position, controls the height detection mechanism to detect the height h of the upper surface of the lug 202 to obtain the value of the height h, controls the second moving part 43 to move the flattening member 41 to the assembly position, controls the flattening drive to press the flattening member 41 above the lug 202 and press it down to height h, the lug pin is completely pressed into the lug 202, and the upper end face of the lug pin is flush with the upper surface of the lug 202.

[0033] refer to Figure 5 The guide plate 21 has a plurality of guide positioning holes 212, the diameter of which is larger than the diameter of the ear pin guide hole 211. The lower pressing surface of the pusher 31 has a plurality of guide posts 312 corresponding to the guide positioning holes 212.

[0034] Preferably, the push pin 311 and the ear pin guide hole 211 correspond one-to-one, and the ear pin guide hole 211 and the ear pin holes 2012 and 2021 correspond one-to-one. The opening of the ear pin guide hole 211 is funnel-shaped to form a guide opening.

[0035] Preferably, the flattening mechanism 40 further includes an upper top, which includes an upper push rod and an upper push drive unit that drives the upper push rod to move up and down. The control mechanism controls the upper push drive unit to move so that when the flattening member 41 of the flattening mechanism 40 presses down on the upper surface of the lug 202, the upper push drive unit drives the upper push rod to move up to fix the guide plate 21.

[0036] Preferably, the guide drive unit 22 includes an elastic reset member, which is installed between the guide plate 21 and the positioning fixture 10, and provides elastic force to the guide plate 21 to slide from the guide clearance position to the assembly position. The guide plate 21 is mounted on a third fixing frame 23, and the elastic reset member connects the third fixing frame 23 to the first fixing frame 11 in the positioning fixture 10.

[0037] refer to Figure 6 The guide drive unit 22 includes a retraction drive unit and a roller 223 rotatably mounted below the guide plate 21. The retraction drive unit includes a first lifting drive plate 224 and a first lifting drive member 225 that drives the first lifting drive plate 224 to move up and down. The top end of the first lifting drive plate 224 has a first inclined drive surface 2241 that allows the roller 223 to roll and slide. The first lifting drive member 225 drives the first lifting drive plate 224 to move up and down. The first inclined drive surface 2241 pushes the roller 223 so that while the roller 223 is rolling, the guide plate 21 is moved from the assembly position to the guide clearance position through the roller 223.

[0038] refer to Figure 1 and Figure 3 The guide drive unit 22 further includes an assembly drive unit, which includes a second lifting drive plate 221 and a second lifting drive member 222 that drives the second lifting drive plate 221 to move up and down. The top end of the second lifting drive plate 221 is formed with a second inclined drive surface 2211 for the roller 223 to roll and slide. The second lifting drive member 222 drives the second lifting drive plate 221 to move up and down. The second inclined drive surface 2211 pushes the roller 222 so that while the roller 222 is rolling, it provides a positioning force to the guide plate 21 to move towards the assembly position.

[0039] The watch strap lug assembly device 100 further includes a conveying mechanism. The conveying mechanism drives the positioning fixture 10 and the guide plate 21 to be sequentially conveyed to the primary pressing station and the secondary pressing station along the conveying line. The pressing mechanism 30 and the assembly drive are installed at the primary pressing station, and the flattening mechanism 40 and the retraction drive are installed at the secondary pressing station. The control mechanism controls the pressing mechanism 30 and the assembly drive to move at the primary pressing station so that the guide plate 21 is positioned at the assembly position. The pressing pin 311 passes through the lug guide hole 211 to press the lug. At the secondary pressing station, the control mechanism controls the flattening mechanism 40 and the retraction drive to move, the guide plate 21 moves to the guide clearance position, and the flattening part 41 presses above the lug 202 and presses down to a height h.

[0040] refer to Figure 4 , Figure 8 and Figure 9 The positioning fixture 10 includes a lug positioning assembly and a strap positioning assembly. The lug positioning assembly is fixed on a first fixing frame 11 and includes a lug fixing seat 12 located at the assembly position and positioning the lug 202. The strap positioning assembly is mounted on a second fixing frame 13 and includes a strap positioning platform 14 for positioning the strap. The second fixing frame 13 is slidably connected to the second fixing frame 13 in the front-back direction, and the strap positioning platform 14 moves between the pre-loading position and the pre-assembly position, so that the watch head 2011 of the strap body 201 on the strap positioning platform 14 moves between the strap loading position and the assembly position. A first elastic member 15 provides elastic force to the second fixing frame 13 to move towards the pre-assembly position. In the positioning fixture 10, the sliding of the first fixing bracket 11 and the second fixing bracket 13, as well as the first elastic element 15, enable the automatic assembly and positioning of the watch head 2011 and the watch lug 202 of the watch strap body 201, preventing the watch head 2011 from moving after being assembled with the watch lug 202. The watch lug fixing seat 12 is provided with a positioning protrusion 121 that mates with the positioning hole on the watch lug 202.

[0041] The watch strap positioning platform 14 includes a support platform, left and right positioning members that are movably mounted on the first fixed frame 11 and can position the watch strap body 201 from the left and right directions, and a pressing block positioning member that is movably mounted on the first fixed frame 11 and can be pressed against the support platform to press down the watch strap body 201.

[0042] This invention discloses a method for assembling watch strap lugs, which involves sequentially inserting lugs into the lugs 202 and the watch strap body 201 during watch strap assembly to connect the lugs 202 and the watch strap body 201 together, including steps S1 to S7.

[0043] Step S1: Provide a lug 202 and a watch strap body 201, and insert the watch head 2011 of the watch strap body 201 into the lug 202. The watch head 2011 and the lug 202 are provided with a plurality of corresponding lug holes 2012 and 2021.

[0044] Step S2: A guide plate 21 is provided, wherein the guide plate 21 is provided with ear pin guide holes 211 corresponding one-to-one with the ear pin holes 2012 and 2021.

[0045] Step S3: Move the guide plate 21 above the lug 202 so that the lug guide hole 211 corresponds to the lug hole position.

[0046] Step S4: Insert the ear pin into the ear pin guide hole 211.

[0047] Step S5: Use a push pin 311 corresponding to the ear pin guide hole 211 to extend into the ear pin guide hole 211 to press the ear pin, so that the ear pin is gradually inserted into the ear pin hole of the watch lug 202 and the watch head 2011.

[0048] Step S6: Remove the guide plate 21 from above the lug 202 to expose the lug 202, and measure the height h of the upper surface of the lug 202.

[0049] Step S7: Use the flattening member 41 to press the upper surface of the lug 202 according to the height h, so that the lug pin is completely pressed into the lug 202 and the upper end face of the lug pin is flush with the upper surface of the lug 202.

[0050] In this embodiment, the order of steps S1 and S2 can be reversed or performed simultaneously. The guide plate 21 is installed on the positioning fixture 10 that fixes the watch lugs 202 and the watch strap body 201.

[0051] The watch strap lug assembly method can be performed by a watch strap lug assembly device.

[0052] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A watch strap lug assembly device, used for assembling a watch strap by inserting the watch head of the watch strap body into the lug, and then sequentially inserting lug pins into the lug pin holes of the lug and the watch strap body to assemble the lug and the watch strap body together, characterized in that: include: The positioning fixture can fix the lug with the meter head inserted into it in the assembly position; The guiding mechanism includes a guide plate and a guiding drive unit. The guide plate is slidably mounted to the positioning fixture and can slide between the guide clearance position and the assembly position. The guide plate is provided with an ear pin guide hole corresponding to the ear pin hole. The guiding drive unit drives the guide plate to slide between the guide clearance position and the assembly position. The pushing mechanism includes a pushing member, a pushing drive unit that drives the pushing member to move up and down, and a first moving part that moves the pushing member horizontally. The lower pressing surface of the pushing member is provided with a pushing pin that corresponds to the ear pin guide hole and can be inserted into the ear pin guide hole. The first moving part can drive the pushing member to move between the assembly position and the first clearance position. The flattening mechanism includes a flattening component, a flattening drive unit that drives the flattening component to move up and down, and a second moving part that moves the flattening component horizontally. The lower end surface of the flattening component is formed with a flat plane. The second moving part can drive the flattening component to move between the assembly position and the second clearance position. A height detection mechanism detects the height h of the upper surface of the lug at the assembly position; The control mechanism, connected to the guiding mechanism, pushing mechanism, and flattening mechanism, controls the guiding drive unit to move after the ear pin is fed into the ear pin guide hole, so that the guide plate moves to the assembly position. Then, it controls the first moving part to move the pushing member above the ear pin guide hole, and controls the pushing drive unit to move so that the pushing pin passes through the ear pin guide hole and pushes the ear pin. The ear pin is gradually inserted into the ear pin holes of the lug and the watch head. The first moving part is controlled to move the pushing member to the first clearance position, and the guiding drive unit is controlled to move the guide plate to the guiding clearance position. The height detection mechanism is controlled to detect the height h of the upper surface of the lug to obtain the value of the height h. The second moving part is controlled to move the flattening member to the assembly position, and the flattening drive unit is controlled to press the flattening member above the lug and down to a height h. The ear pin is completely pressed into the lug, and the upper end face of the ear pin is flush with the upper surface of the lug.

2. The watch strap ear pin assembly device as described in claim 1, characterized in that: The guide plate has multiple guide positioning holes, the diameter of which is larger than the diameter of the ear pin guide hole. The lower pressing surface of the pusher has multiple guide posts corresponding to the guide positioning holes.

3. The watch strap ear pin assembly device as described in claim 1, characterized in that: The push pin and the ear needle guide hole correspond one-to-one, and the ear needle guide hole and the ear needle hole correspond one-to-one.

4. The watch strap ear pin assembly device as described in claim 1, characterized in that: The flattening mechanism also includes an upper top, which includes an upper push rod and an upper push drive unit that drives the upper push rod to move up and down. The control mechanism controls the upper push drive unit to move so that when the flattening member of the flattening mechanism presses down on the upper surface of the lug, the upper push drive unit drives the upper push rod to move up to fix the guide plate.

5. The watch strap ear pin assembly device as described in claim 1, characterized in that: The guide drive unit includes an elastic reset member, which is installed between the guide plate and the positioning fixture, and provides elastic force to the guide plate to slide from the guide clearance position to the assembly position.

6. The watch strap ear pin assembly device as described in claim 1, characterized in that: The guide drive unit includes a retraction drive unit and a roller rotatably mounted below the guide plate. The retraction drive unit includes a first lifting drive plate and a first lifting drive member that drives the first lifting drive plate to move up and down. The top of the first lifting drive plate is formed with a first inclined drive surface that allows the roller to roll and slide. The first lifting drive member drives the first lifting drive plate to move up and down. The first inclined drive surface pushes the roller so that while the roller is rolling, it drives the guide plate to move from the assembly position to the guide clearance position.

7. The watch strap ear pin assembly device as described in claim 6, characterized in that: The guide drive unit further includes an assembly drive unit, which includes a second lifting drive plate and a second lifting drive member that drives the second lifting drive plate to move up and down. The top end of the second lifting drive plate is formed with a second inclined drive surface that allows the roller to roll and slide. The second lifting drive member drives the second lifting drive plate to move up and down, and the second inclined drive surface pushes the roller so that while the roller rolls, it provides a positioning force to the guide plate to move towards the assembly position.

8. The watch strap ear pin assembly device as described in claim 7, characterized in that: It also includes a conveying mechanism, which drives the positioning fixture and guide plate to be sequentially conveyed along the conveyor line to the primary pressing station and the secondary pressing station. The pressing mechanism and the assembly drive are installed at the primary pressing station, and the flattening mechanism and the retraction drive are installed at the secondary pressing station. The control mechanism controls the pressing mechanism and the assembly drive to move at the primary pressing station so that the guide plate is positioned at the assembly position, and the pressing pin pushes the ear pin through the ear pin guide hole. At the secondary pressing station, the control mechanism controls the flattening mechanism and the retraction drive to move the guide plate to the guide clearance position, and the flattening part is pressed above the lug and pressed down to a height h.

9. The watch strap ear pin assembly device as described in claim 1, characterized in that: The positioning fixture includes a lug positioning assembly and a strap positioning assembly. The lug positioning assembly is fixed on a first fixed frame and includes a lug fixing seat located at the assembly position and positioning the lugs. The strap positioning assembly is mounted on a second fixed frame and includes a strap positioning platform for positioning the strap. The second fixed frame is slidably connected to the second fixed frame in the front-rear direction, and the strap positioning platform moves between a pre-loading position and a pre-assembly position, so that the watch head of the strap on the strap positioning platform moves between the strap loading position and the assembly position. A first elastic element provides a spring force to the second fixed frame to move towards the pre-assembly position.

Images