Automatic shuttle peg replacing device

Abstract

The utility model discloses an automatic shuttle peg changing device, which relates to the technical field of textile equipment and comprises a support plate and a motor, the output end of the motor is fixedly connected with a transmission rotating rod, the transmission rotating rod is positioned at one end, far away from the motor, of the support plate, and the outer wall of the transmission rotating rod is slidably sleeved with a shuttle disc. And a plurality of supporting rods are fixedly connected to the end, away from the supporting plate, of the shuttle disc at equal intervals in the circumferential direction, the outer walls of the multiple supporting rods are slidably connected with shuttle shells in a sleeving mode, and a positioning mechanism used for preventing the multiple shuttle shells from displacing and falling off when the shuttle disc is replaced is arranged on the shuttle disc. Through the positioning mechanism, the outer walls of the bobbin cases are synchronously extruded while locking and fixing of the shuttle disc are relieved, so that the situation that the bobbin cases displace and fall off in the displacement process of the shuttle disc is effectively avoided, overall replacement of the bobbin cases in the empty case state is facilitated, and the replacement efficiency of the bobbin cases in the empty case state is improved. Therefore, the time required for replacing the bobbin case can be further shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of textile equipment, in particular to an automatic bobbin changing device. Background Art

[0002] The bobbin is a key component of a sewing machine for storing thread. The bobbin is located inside the bobbin case and is wound with a coil. During the sewing process, the bobbin will cooperate with the bobbin to help the coil pass through the needle hole smoothly.

[0003] The bobbin is then automatically replaced by the new one after the bobbin has been used up, and the new one is then manually removed from the shuttle disc and replaced with a new one, so that the sewing machine can continue to work.

[0004] During the installation and disassembly of the existing shuttle disc, the bobbin case and the support rod on the shuttle disc are slidably connected to facilitate the clamping claws to take and place the bobbin case. Therefore, during the process of replacing the shuttle disc, the shuttle disc may slide and fall off due to displacement and vibration of the shuttle disc. Based on this, an automatic bobbin core changing device is now provided to eliminate the disadvantages of the existing device. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic bobbin changing device to solve the problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An automatic bobbin changing device comprises a support plate, one end of which is mounted a motor, an output end of which is fixedly connected to a transmission rotating rod, the transmission rotating rod being located at an end of the support plate away from the motor, an outer wall of the transmission rotating rod being slidably sleeved with a shuttle disc, an end of the shuttle disc away from the support plate being fixedly connected to a plurality of support rods equidistantly in the circumferential direction, a plurality of support rods being slidably sleeved with a bobbin case on their outer walls, and a positioning mechanism being provided on the shuttle disc for preventing the plurality of bobbin cases from being displaced and falling off when the shuttle disc is replaced;

[0008] The positioning mechanism includes: a limit stop ring sleeved on the outer wall of the transmission rotating rod, the limit stop ring is fixedly connected to the transmission rotating rod, the limit stop ring is located between the support plate and the shuttle disc, the limit stop ring is in contact with the outer wall of the shuttle disc, and the limit stop ring is formed with a plurality of limit blocks equidistantly around one end away from the support plate, and the plurality of limit blocks all penetrate into the interior of the shuttle disc.

[0009] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0010] In an optional solution: the positioning mechanism further includes: an anti-displacement component provided on the shuttle disc, the anti-displacement component being used to squeeze the outer wall of the bobbin case when the shuttle disc is replaced;

[0011] The anti-displacement assembly includes: a plurality of connecting pull blocks equidistantly arranged on the outside of the shuttle disc in the circumferential direction, the plurality of connecting pull blocks respectively corresponding to the plurality of support rods, the ends of the plurality of connecting pull blocks away from the support plate are fixedly connected to anti-slip rubber pads, the ends of the plurality of connecting pull blocks close to the shuttle disc are fixedly connected to connecting push rods, the connecting push rods penetrate into the interior of the shuttle disc, and the connecting push rods are slidably connected to the shuttle disc;

[0012] A reset assembly is provided at one end of the connecting push rod away from the connecting pull block, and the reset assembly is used to drive the connecting push rod to move back and forth.

[0013] In an optional solution, the reset assembly includes: a connecting pressure plate fixedly connected to the end of the connecting push rod away from the connecting pull block, the connecting pressure plate is located inside the shuttle disk, the connecting pressure plate is slidably connected to the shuttle disk, the outer wall of the connecting push rod is sleeved with a spring, one end of the spring is in contact with the outer wall of the connecting pressure plate, and the other end of the spring is in contact with the inner wall of the shuttle disk;

[0014] An extrusion assembly is provided at one end of the connecting pressure plate away from the connecting push rod, and the extrusion assembly is used to squeeze the connecting pressure plate to move it.

[0015] In an optional solution, the extrusion assembly includes: two connecting push plates symmetrically fixedly connected to the end of the connecting pressure plate away from the connecting push rod, the two connecting push plates are used for sliding connection of the shuttle disc, a movable push block is fixedly connected between the two connecting push plates, the outer wall of the movable push block is sleeved with the movable push plate, the movable push plate is located between the two connecting push plates, and a guide inclined groove for sliding of the movable push block is opened at the connection position between the movable push plate and the movable push block;

[0016] A limiting component is provided at the bottom end of the movable push plate, and the limiting component is used to drive the movable push plate to move and limit.

[0017] In an optional solution, the limiting assembly includes: a fixed rod provided below the movable push plate, the fixed rod being fixedly connected to the shuttle disc, a connecting slider being slidably sleeved on the outer wall of the fixed rod, and the connecting slider being fixedly connected to the movable push plate;

[0018] A moving component is provided at the bottom end of the connecting slider, and the moving component is used to push the connecting slider to move.

[0019] In an optional solution, the moving assembly includes: a first sliding push block provided below the connecting slider, the first sliding push block in contact with the outer wall of the connecting slider, the first sliding push block being slidably connected to the shuttle disc and the connecting slider, a lifting push rod being fixedly connected to the bottom end of the first sliding push block, and the lifting push rod being slidably connected to the shuttle disc;

[0020] The bottom end of the lifting push rod is provided with a clamping assembly, and the clamping assembly is used to push the lifting push rod to move.

[0021] In an optional solution, the engaging assembly includes: a movable insert block provided below the lifting push rod, the movable insert block being in contact with the outer wall of the lifting push rod, the movable insert block passing through the shuttle disc to the interior of the transmission rotating rod, the bottom end of the movable insert block being fixedly connected to a second sliding push block, the second sliding push block being slidably connected to the transmission rotating rod;

[0022] A pressing assembly is provided inside the transmission rotating rod, and the pressing assembly is used to press the second sliding push block to move.

[0023] In an optional solution: the pressing assembly includes: a movable pressure plate arranged inside the transmission rotating rod, the outer wall of one end of the movable pressure plate is in a frustum shape, the outer wall of the second sliding push block and the movable pressure plate at the connection position is in contact with each other, the movable pressure plate is slidably connected to the transmission rotating rod and the second sliding push block, one end of the movable pressure plate is fixedly connected to a limiting slider, and the limiting slider is slidably connected to the transmission rotating rod;

[0024] A locking assembly is provided at one end of the transmission rotating rod away from the supporting plate, and the locking assembly is used to squeeze and fix the limiting sliding block.

[0025] In an optional solution: the locking assembly is a bolt arranged at one end of the transmission rod away from the support plate, the bolt passes through the interior of the transmission rod, the bolt contacts the outer wall of the limiting slider, and the bolt is threadedly connected to the transmission rod.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] The utility model uses a positioning mechanism to release the lock of the shuttle disc and simultaneously squeeze the outer walls of the multiple shuttle cases, thereby effectively preventing the multiple shuttle cases from being displaced and falling off during the displacement of the shuttle disc, so that the multiple shuttle cases in the empty shell state can be replaced as a whole, thereby further reducing the time required for replacing the shuttle cases. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the present utility model.

[0029] Figure 2It is a schematic diagram of the cross-sectional structure of the shuttle disc of the present utility model.

[0030] Figure 3 It is a schematic cross-sectional structure diagram of a positioning mechanism in one embodiment of the present utility model.

[0031] Figure 4 In one embodiment of the present invention Figure 2 Schematic diagram of the locally enlarged structure at point A in the figure.

[0032] Notes on the accompanying drawings: 1. Support plate; 201. Bolt; 202. Anti-slip rubber pad; 203. Fixed rod; 204. First sliding push block; 205. Lifting push rod; 206. Limiting slider; 207. Moving pressure plate; 208. Second sliding push block; 209. Moving plug block; 2010. Limiting block; 2011. Limiting ring; 2012. Connecting slider; 2013. Guide inclined groove; 2014. Moving push plate; 2015. Connecting push plate; 2016. Connecting pressure plate; 2017. Spring; 2018. Connecting push rod; 2019. Connecting pull block; 2020. Moving push block; 3. Bobbin case; 4. Transmission rotating rod; 5. Support rod; 6. Shuttle; 7. Motor. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0034] In one embodiment, Figure 1-Figure 4 The outer wall of the transmission rotating rod 4 is truncated and the outer wall of the transmission rotating rod 4 is slidably sleeved with a shuttle disc 6. The shuttle disc 6 can accurately sleeve the outer wall of the transmission rotating rod 4. The end of the shuttle disc 6 away from the support plate 1 is fixedly connected with a plurality of support rods 5 at equal intervals around the circumference. The outer walls of the plurality of support rods 5 are all slidably sleeved with a bobbin case 3. The outer walls of the plurality of support rods 5 are all provided with a first anti-slip rubber ring that contacts the inner wall of the bobbin case 3. The first anti-slip rubber ring effectively prevents the bobbin case 3 from separating from the support rod 5 during the rotation of the shuttle disc 6. A positioning mechanism is provided on the shuttle disc 6 for preventing the plurality of bobbin cases 3 from being displaced and falling off when the shuttle disc 6 is replaced.

[0035] The positioning mechanism includes: a limit stop ring 2011 sleeved on the outer wall of the transmission rotating rod 4, the limit stop ring 2011 is fixedly connected to the transmission rotating rod 4, the limit stop ring 2011 is located between the support plate 1 and the shuttle disc 6, the limit stop ring 2011 contacts the outer wall of the shuttle disc 6, and the limit stop ring 2011 is circumferentially equidistantly formed with a plurality of limit blocks 2010 at one end away from the support plate 1. The plurality of limit blocks 2010 all penetrate the interior of the shuttle disc 6, and the outer walls of the plurality of limit blocks 2010 are all hemispherical. The position where the shuttle disc 6 and the limit block 2010 meet is provided with a positioning sleeve groove that matches the outer wall of the limit block 2010. Through the mutual cooperation of the hemispherical outer wall and the positioning sleeve groove, the shuttle disc 6 can be limitedly connected to the limit stop ring 2011 through the limit block 2010;

[0036] In this embodiment, when in use, the motor 7 is started to drive the transmission rod 4 to rotate, and at the same time, the limit ring 2011 is driven by the transmission rod 4 to drive the shuttle disc 6 to rotate intermittently through the limit block 2010, so that multiple bobbin cases 3 can be switched;

[0037] When the multiple bobbin cases 3 at one end of the shuttle disc 6 are all in an empty shell state, the motor 7 is stopped, and the locking and fixing of the shuttle disc 6 can be released by the positioning mechanism, and the outer walls of the multiple bobbin cases 3 are synchronously squeezed, thereby effectively preventing the multiple bobbin cases 3 from being displaced and falling off during the displacement of the shuttle disc 6;

[0038] Then, one shuttle disc 6 is pulled away from the outer wall of the transmission rotating rod 4, and then the other shuttle disc 6 is pushed to engage with the outer wall of the transmission rotating rod 4. Then, the above operation is reversed, and multiple bobbin cases 3 in the empty shell state can be replaced as a whole, thereby further reducing the time required for replacing the bobbin cases 3;

[0039] In one embodiment, Figure 1-Figure 4 As shown, the positioning mechanism further includes: an anti-displacement component provided on the shuttle disc 6, the anti-displacement component being used to squeeze the outer wall of the bobbin case 3 when the shuttle disc 6 is replaced;

[0040] The anti-displacement component includes: a plurality of connecting pull blocks 2019 equidistantly arranged on the outside of the shuttle disc 6 in the circumferential direction, the plurality of connecting pull blocks 2019 respectively corresponding to the plurality of support rods 5, the ends of the plurality of connecting pull blocks 2019 away from the support plate 1 are fixedly connected to the anti-slip rubber pad 202, the ends of the plurality of connecting pull blocks 2019 close to the shuttle disc 6 are fixedly connected to the connecting push rod 2018, the connecting push rod 2018 passes through the interior of the shuttle disc 6, the connecting push rod 2018 is slidably connected to the shuttle disc 6, and is used to squeeze the outer wall of the bobbin case 3 through the anti-slip rubber pad 202, thereby effectively preventing the bobbin case 3 from sliding off during the displacement of the shuttle disc 6;

[0041] A reset assembly is provided at one end of the connecting push rod 2018 away from the connecting pull block 2019, and the reset assembly is used to drive the connecting push rod 2018 to move back and forth;

[0042] In one embodiment, Figure 2-Figure 4 As shown, the reset assembly includes: a connecting pressure plate 2016 fixedly connected to the end of the connecting push rod 2018 away from the connecting pull block 2019, the connecting pressure plate 2016 is located inside the shuttle disc 6, the connecting pressure plate 2016 is slidably connected to the shuttle disc 6, the outer wall of the connecting push rod 2018 is sleeved with a spring 2017, one end of the spring 2017 is in contact with the outer wall of the connecting pressure plate 2016, and the other end of the spring 2017 is in contact with the inner wall of the shuttle disc 6, and the spring 2017 can push the connecting pressure plate 2016 to automatically reset;

[0043] An extrusion assembly is provided at one end of the connecting pressing plate 2016 away from the connecting push rod 2018, and the extrusion assembly is used to squeeze the connecting pressing plate 2016 to move;

[0044] In one embodiment, Figure 2-Figure 4 As shown, the extrusion assembly includes: two connecting push plates 2015 symmetrically fixedly connected to the connecting pressure plate 2016 at one end away from the connecting push rod 2018, the two connecting push plates 2015 are both used for sliding connection of the shuttle disc 6, a mobile push block 2020 is fixedly connected between the two connecting push plates 2015, the outer wall of the mobile push block 2020 is sleeved with a mobile push plate 2014, the mobile push plate 2014 is located between the two connecting push plates 2015, and a guide inclined groove 2013 for sliding of the mobile push block 2020 is opened at the connecting position of the mobile push plate 2014 and the mobile push block 2020. Through the mutual cooperation of the mobile push block 2020 and the guide inclined groove 2013, the mobile push plate 2014 can push the two connecting push plates 2015 to slide up and down during the movement process;

[0045] A limit assembly is provided at the bottom end of the movable push plate 2014, and the limit assembly is used to drive the movable push plate 2014 to move and limit;

[0046] In one embodiment, Figure 2-Figure 4 As shown, the limiting assembly includes: a fixed rod 203 provided below the movable push plate 2014, the fixed rod 203 is fixedly connected to the shuttle disc 6, the outer wall of the fixed rod 203 is slidably sleeved with a connecting slider 2012, the connecting slider 2012 is fixedly connected to the movable push plate 2014, and the fixed rod 203 allows the connecting slider 2012 to slide within the shuttle disc 6;

[0047] A moving component is provided at the bottom end of the connecting slider 2012, and the moving component is used to push the connecting slider 2012 to move;

[0048] In one embodiment, Figure 2-Figure 4As shown, the moving assembly includes: a first sliding push block 204 arranged below the connecting slider 2012, the first sliding push block 204 contacts the outer wall of the connecting slider 2012, the first sliding push block 204 is slidably connected to the shuttle disc 6 and the connecting slider 2012, the lower surface of the connecting slider 2012 is inclined, the first sliding push block 204 and the inclined outer wall of the connecting slider 2012 fit together, the bottom end of the first sliding push block 204 is fixedly connected to a lifting push rod 205, the lifting push rod 205 is slidably connected to the shuttle disc 6, and the connecting slider 2012 can be squeezed and pushed by the first sliding push block 204 to slide along the inner wall of the shuttle disc 6 and the outer wall of the fixed rod 203 for limited sliding;

[0049] The bottom end of the lifting push rod 205 is provided with a clamping assembly, which is used to push the lifting push rod 205 to move;

[0050] In one embodiment, Figure 2-Figure 4 As shown, the engaging assembly includes: a movable plug-in block 209 provided below the lifting push rod 205, the movable plug-in block 209 contacts the outer wall of the lifting push rod 205, the movable plug-in block 209 passes through the shuttle disc 6 to the interior of the transmission rotating rod 4, the top outer wall of the movable plug-in block 209 is hemispherical, the outer wall of the movable plug-in block 209 is provided with a second anti-slip rubber ring, the bottom end of the movable plug-in block 209 is fixedly connected to the second sliding push block 208, the second sliding push block 208 is slidably connected to the transmission rotating rod 4, and the movable plug-in block 209 can be accurately inserted into the interior of the shuttle disc 6 through the hemispherical outer wall;

[0051] A pressing component is provided inside the transmission rotating rod 4, and the pressing component is used to squeeze the second sliding push block 208 to move;

[0052] In one embodiment, Figure 2 As shown, the pressing assembly includes: a mobile pressure plate 207 arranged inside the transmission rotating rod 4, the outer wall of one end of the mobile pressure plate 207 is in a frustum shape, the second sliding push block 208 and the outer wall of the mobile pressure plate 207 at the connection position are in contact with each other, the mobile pressure plate 207 is slidably connected to the transmission rotating rod 4 and the second sliding push block 208, one end of the mobile pressure plate 207 is fixedly connected to the limiting slider 206, the limiting slider 206 is slidably connected to the transmission rotating rod 4, and the mobile pressure plate 207 can be movably supported by the limiting slider 206;

[0053] A locking assembly is provided at one end of the transmission rotating rod 4 away from the support plate 1, and the locking assembly is used to squeeze and fix the limiting slider 206;

[0054] In one embodiment, Figure 1-Figure 2As shown, the locking assembly is a bolt 201 arranged at the end of the transmission rod 4 away from the support plate 1. The bolt 201 penetrates into the interior of the transmission rod 4, contacts the outer wall of the limiting slider 206, and is threadedly connected to the transmission rod 4.

[0055] The above embodiment discloses an automatic bobbin changing device, wherein, when in use, the motor 7 is started to drive the transmission rotating rod 4 to rotate, and at the same time, the limit ring 2011, driven by the transmission rotating rod 4, drives the shuttle disc 6 to rotate intermittently through the limit block 2010, thereby switching between multiple bobbin cases 3;

[0056] When the multiple bobbin cases 3 at one end of the shuttle disc 6 are in the empty shell state, the motor 7 is stopped and the bolt 201 is driven to rotate by the tool. At this time, the bolt 201 is connected to the transmission rotating rod 4 through the threaded connection, and moves to the outside of one end of the transmission rotating rod 4. In this process, the spring 2017 pushes the connecting pressure plate 2016 to move along the inner wall of the shuttle disc 6 through the rebound. At this time, the connecting pull block 2019 drives the anti-slip rubber pad 202 to move through the connecting push rod 2018 under the drive of the connecting pressure plate 2016. At the same time, the moving push block 2020 moves through the two connecting push plates 2015 under the push of the connecting pressure plate 2016. At this time, the moving push plate 2014 drives the connecting slider 2012 to slide along the outer wall of the fixed rod 203 through the guide inclined groove 2013 under the extrusion of the moving push block 2020. The push block 204 is squeezed by the outer wall of the connecting slider 2012, pushing the lifting push rod 205 to slide along the outer wall of the shuttle disc 6. At this time, the moving insert block 209 is pushed by the lifting push rod 205 to push the second sliding push block 208 to slide along the inner wall of the transmission rotating rod 4. At the same time, the moving pressure plate 207 is squeezed by the outer wall of the second sliding push block 208 to push the limiting slider 206 to slide along the inner wall of the transmission rotating rod 4. At this time, the limiting slider 206 moves synchronously with the displacement of the bolt 201 until the connecting pull block 2019 contacts the outer wall of the shuttle disc 6. At the same time, the anti-slip rubber pad 202 squeezes the outer wall of the bobbin case 3 by moving, thereby releasing the lock and fixation of the shuttle disc 6 and synchronously squeezing the outer walls of multiple bobbin cases 3, thereby effectively preventing multiple bobbin cases 3 from being displaced and falling off during the displacement of the shuttle disc 6.

[0057] Then, one shuttle disc 6 is pulled to separate from the outer walls of the transmission rotating rod 4, the limit block 2010, and the limit ring 2011, and then the other shuttle disc 6 is pushed to engage the outer walls of the transmission rotating rod 4 and the limit block 2010. Then, the above operation is reversed by rotating the bolt 201 by a tool, so that multiple bobbin cases 3 in the empty shell state can be replaced as a whole, thereby further reducing the time required for replacing the bobbin case 3. At the same time, by pulling the connecting pull block 2019, the squeezing of the anti-slip rubber pad 202 on the bobbin case 3 can be released, so that multiple bobbin cases 3 in the empty shell state can be conveniently replaced separately.

[0058] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An automatic shuttle core changing device, comprising a support plate (1), one end of the support plate (1) is mounted with a motor (7), the output end of the motor (7) is fixedly connected with a transmission rotating rod (4), the transmission rotating rod (4) is located at the end of the support plate (1) away from the motor (7), the outer wall of the transmission rotating rod (4) is slidably sleeved with a shuttle disc (6), the end of the shuttle disc (6) away from the support plate (1) is fixedly connected with a plurality of support rods (5) at equal intervals in the circumferential direction, the outer walls of the plurality of support rods (5) are all slidably sleeved with a shuttle case (3), characterized in that: The shuttle disc (6) is provided with a positioning mechanism for preventing the plurality of shuttle cases (3) from being displaced and falling off when the shuttle disc (6) is replaced; The positioning mechanism comprises: a limit stop ring (2011) sleeved on the outer wall of the transmission rotating rod (4), the limit stop ring (2011) being fixedly connected to the transmission rotating rod (4), the limit stop ring (2011) being located between the support plate (1) and the shuttle disc (6), the limit stop ring (2011) being in contact with the outer wall of the shuttle disc (6), and a plurality of limit blocks (2010) being equidistantly formed in the circumferential direction on one end of the limit stop ring (2011) away from the support plate (1), the plurality of limit blocks (2010) all penetrating into the interior of the shuttle disc (6).

2. The automatic bobbin changing device according to claim 1, characterized in that: The positioning mechanism further comprises: an anti-displacement component arranged on the shuttle disc (6), the anti-displacement component being used to squeeze the outer wall of the bobbin case (3) when the shuttle disc (6) is replaced; The anti-displacement assembly comprises: a plurality of connecting pull blocks (2019) equidistantly arranged on the outside of the shuttle disc (6) in the circumferential direction, the plurality of connecting pull blocks (2019) respectively corresponding to the plurality of support rods (5), the ends of the plurality of connecting pull blocks (2019) away from the support plate (1) are fixedly connected to the anti-slip rubber pad (202), the ends of the plurality of connecting pull blocks (2019) close to the shuttle disc (6) are fixedly connected to the connecting push rod (2018), the connecting push rod (2018) penetrates the interior of the shuttle disc (6), and the connecting push rod (2018) is slidably connected to the shuttle disc (6); A reset assembly is provided at one end of the connecting push rod (2018) away from the connecting pull block (2019), and the reset assembly is used to drive the connecting push rod (2018) to move back and forth.

3. The automatic bobbin changing device according to claim 2, characterized in that: The reset assembly comprises: a connecting pressure plate (2016) fixedly connected to an end of the connecting push rod (2018) away from the connecting pull block (2019), the connecting pressure plate (2016) is located inside the shuttle disc (6), the connecting pressure plate (2016) is slidably connected to the shuttle disc (6), the outer wall of the connecting push rod (2018) is sleeved with a spring (2017), one end of the spring (2017) is in contact with the outer wall of the connecting pressure plate (2016), and the other end of the spring (2017) is in contact with the inner wall of the shuttle disc (6); An extrusion assembly is provided at one end of the connecting pressure plate (2016) away from the connecting push rod (2018), and the extrusion assembly is used to squeeze the connecting pressure plate (2016) to move it.

4. The automatic bobbin changing device according to claim 3, characterized in that: The extrusion assembly comprises: two connecting push plates (2015) symmetrically fixedly connected to one end of the connecting pressure plate (2016) away from the connecting push rod (2018), the two connecting push plates (2015) are both used for sliding connection with the shuttle disc (6), a movable push block (2020) is fixedly connected between the two connecting push plates (2015), the outer wall of the movable push block (2020) is sleeved with a movable push plate (2014), the movable push plate (2014) is located between the two connecting push plates (2015), and a guide inclined groove (2013) for sliding of the movable push block (2020) is provided at the connecting position of the movable push plate (2014) and the movable push block (2020); A limiting component is provided at the bottom end of the movable push plate (2014), and the limiting component is used to drive the movable push plate (2014) to move and limit.

5. The automatic bobbin changing device according to claim 4, characterized in that: The limiting assembly comprises: a fixed rod (203) arranged below the movable push plate (2014), the fixed rod (203) being fixedly connected to the shuttle disc (6), a connecting slider (2012) being slidably sleeved on the outer wall of the fixed rod (203), and the connecting slider (2012) being fixedly connected to the movable push plate (2014); A moving component is provided at the bottom end of the connecting slider (2012), and the moving component is used to push the connecting slider (2012) to move.

6. The automatic bobbin changing device according to claim 5, characterized in that: The moving assembly comprises: a first sliding push block (204) arranged below the connecting slider (2012), the first sliding push block (204) being in contact with the outer wall of the connecting slider (2012), the first sliding push block (204) being slidably connected to the shuttle disc (6) and the connecting slider (2012), a lifting push rod (205) being fixedly connected to the bottom end of the first sliding push block (204), and the lifting push rod (205) being slidably connected to the shuttle disc (6); The bottom end of the lifting push rod (205) is provided with a clamping assembly, and the clamping assembly is used to push the lifting push rod (205) to move.

7. The automatic bobbin changing device according to claim 6, characterized in that: The engaging assembly comprises: a movable insert block (209) arranged below the lifting push rod (205), the movable insert block (209) contacts the outer wall of the lifting push rod (205), the movable insert block (209) passes through the shuttle disc (6) to the interior of the transmission rotating rod (4), the bottom end of the movable insert block (209) is fixedly connected to a second sliding push block (208), and the second sliding push block (208) is slidably connected to the transmission rotating rod (4); A pressing assembly is provided inside the transmission rotating rod (4), and the pressing assembly is used to press the second sliding push block (208) to move.

8. The automatic bobbin changing device according to claim 7, characterized in that: The pressing assembly comprises: a movable pressure plate (207) arranged inside the transmission rotating rod (4); the outer wall of one end of the movable pressure plate (207) is in a truncated cone shape; the outer wall of the second sliding push block (208) and the movable pressure plate (207) at the connecting position fits each other; the movable pressure plate (207) is slidably connected to the transmission rotating rod (4) and the second sliding push block (208); one end of the movable pressure plate (207) is fixedly connected to a limiting slider (206); and the limiting slider (206) is slidably connected to the transmission rotating rod (4); A locking assembly is provided at one end of the transmission rotating rod (4) away from the support plate (1), and the locking assembly is used to squeeze and fix the limiting slider (206).

9. The automatic bobbin changing device according to claim 8, characterized in that: The locking assembly is a bolt (201) provided at one end of the transmission rotating rod (4) away from the support plate (1); the bolt (201) penetrates into the interior of the transmission rotating rod (4); the bolt (201) contacts the outer wall of the limiting slider (206); and the bolt (201) is threadedly connected to the transmission rotating rod (4).

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