Interval-variable staggered transfer clamp mechanism

Abstract

The utility model discloses a variable-spacing staggered transfer fixture mechanism, which relates to the technical field of automatic production, and comprises a frame, a mounting rack, two groups of mouth pipe fixture components and a push-pull piece, the mounting rack is slidably mounted on the frame, that is, the push-pull piece is mounted on the mounting rack, and the mouth pipe fixture components are mounted on the mounting rack. Materials are transferred in a staggered mode through sliding of the installation frame on the rack, the installation shaft is installed on the installation frame, the mouth pipe clamp assemblies are installed on the installation shaft, and the push-pull piece is used for driving the two mouth pipe clamp assemblies to be close to or away from each other so as to achieve adjustment of the distance between the two mouth pipe clamp assemblies. The push-pull piece can push the two sets of mouth pipe clamp assemblies to slide back and forth in the axis direction of the mounting shaft so as to adjust the distance between the two sets of mouth pipe clamp assemblies, so that the requirement for different distances in the staggered transferring process is met, the number of structures for adjusting the distance between the mouth pipe clamp assemblies is reduced, and the overall weight and assembly difficulty of the clamp are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic production, and more specifically, to a staggered transfer fixture mechanism with variable pitch. Background Art

[0002] In an automatic bag-making, filling and sealing machine production line, the bag type pitches of the bag-making machine and the filling and sealing machine are inconsistent. Therefore, a transfer fixture needs to be set between the bag-making machine and the filling and sealing machine to adjust the bag type pitch. The conventional powder-liquid double-chamber soft bag line adopts a linear layout and structures such as linear transfer, that is, the layout mode where two rows of conveyors are on the same straight line. This layout mode results in many components, heavy load of the electric cylinder, and slow speed. These structures seriously affect the operation speed of the equipment and also increase the requirements for the workshop site, making it difficult to meet the customer's requirements for production capacity.

[0003] In summary, how to provide a solution to the problems of the current transfer fixture with complex structure and long transfer time is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a staggered transfer fixture mechanism with variable pitch, reducing the overall number of fixture components and the overall operation time of the fixture.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A staggered transfer fixture mechanism with variable pitch includes a frame, a mounting frame, two groups of mouth tube fixture components, and a push-pull member. The mounting frame is slidably mounted on the frame. That is to say, the staggered transfer of materials is realized by the sliding of the mounting frame on the frame. A mounting shaft is mounted on the mounting frame, and the mouth tube fixture components are mounted on the mounting shaft and slide along the axis of the mounting shaft. The push-pull member is used to drive the two groups of mouth tube fixture components to approach or move away from each other to realize the adjustment of the distance between the two groups of mouth tube fixture components. That is to say, the push-pull member can push the two groups of mouth tube fixture components to slide back and forth along the axis of the mounting shaft to realize the adjustment of the distance between the two groups of mouth tube fixture components, thereby solving the requirement for different pitches during the staggered transfer process.

[0007] Further, the mounting shaft is rotatably mounted on the mounting frame, and further includes:

[0008] A flipping cylinder, which is mounted on the mounting frame and used to drive the mounting shaft to rotate along its axis.

[0009] Further, the mounting shaft is provided with a spline extending along its axis to limit the rotation of the two groups of mouth tube fixture components along the axis of the mounting shaft.

[0010] Further, for the present utility model, the cross-section of the mounting shaft is polygonal, and the two sets of orifice tube clamp assemblies are matched with the mounting shaft to restrict the rotation of the two sets of orifice tube clamp assemblies along the axis direction of the mounting shaft.

[0011] Further, for the present utility model, the two sets of orifice tube clamp assemblies are symmetrically arranged about the midpoint of the axis of the mounting shaft, and the two sets of orifice tube clamp assemblies each include:

[0012] A first orifice tube clamp and a second orifice tube clamp;

[0013] A connecting shaft, one end of the connecting shaft is connected to the first orifice tube clamp, and the other end of the connecting shaft is fixedly connected to the second orifice tube clamp;

[0014] The push-pull member is respectively fixedly connected to the first orifice tube clamps in the two sets of orifice tube clamp assemblies;

[0015] When the push-pull member expands and contracts, it drives the two first orifice tube clamps to approach or move away from each other, and synchronously drives the two second orifice tube clamps to approach or move away from each other through the connecting shaft.

[0016] Further, for the present utility model, a first limit plate is installed on the mounting shaft, and the first limit plate is located between the two sets of orifice tube clamp assemblies for restricting the minimum distance between the two second orifice tube clamps.

[0017] Further, for the present utility model, the two sets of orifice tube clamp assemblies further include:

[0018] A second limit plate, the second limit plate is located between the first orifice tube clamp and the second orifice tube clamp for restricting the maximum distance between the two second orifice tube clamps.

[0019] Further, for the present utility model, a sliding hole is provided on the first orifice tube clamp, the connecting shaft is slidably installed at the sliding hole, and a limit block for restricting the connecting shaft from moving out of the sliding hole is installed on the connecting shaft.

[0020] Further, for the present utility model, the push-pull member adopts an electric cylinder.

[0021] The variable-spacing staggered transfer fixture mechanism provided by the present utility model, when in use, the frame is installed at the use position, two rows of conveyors are placed side by side, and the size of the frame is reduced, and the frame is placed above the two rows of conveyors. The mounting frame is slidably mounted on the frame, and the staggered transfer of materials is realized by the sliding of the mounting frame on the frame, shortening the time in the material transfer process, which is beneficial to improving production efficiency. The mouth tube fixture assembly is installed on the mounting shaft and slides along the axis of the mounting shaft. The push-pull member is used to drive the two groups of mouth tube fixture assemblies to approach or move away from each other to realize the adjustment of the distance between the two groups of mouth tube fixture assemblies. Through this structure, the time for adjusting the distance between the mouth tube fixture assemblies can be reduced, and the number of structures for adjusting the distance between the mouth tube fixture assemblies can be reduced, so as to reduce the overall weight and assembly difficulty of the fixture. At the same time, the equal-spacing change between multiple mouth tube fixtures can also be realized to meet the needs of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 Structural schematic diagram of the overall installation structure of the frame and fixture provided by the present utility model;

[0024] Figure 2 Structural schematic diagram of the fixture when the distance between the fixtures is reduced provided by the present utility model;

[0025] Figure 3 Structural schematic diagram of the fixture when the distance between the fixtures is enlarged provided by the present utility model;

[0026] Figure 4 Provided by the present utility model Figure 2 Structural schematic diagram of the enlarged structure at position A in

[0027] Figures 1 - 4 In, the reference numerals include:

[0028] 1. Frame; 2. Mounting frame; 3. Mounting shaft; 4. Mouth tube fixture assembly; 401. First mouth tube fixture; 402. Second mouth tube fixture; 403. Connecting shaft; 404. Second limiting plate; 411. Sliding hole; 412. Limiting block; 5. Push-pull member; 6. Tipping cylinder; 7. Second limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] The core of the present invention is to provide a staggered transfer fixture mechanism with variable spacing, which reduces the number of overall fixture components and the overall operation time of the fixture.

[0031] Please refer to Figures 1 - 4 , a staggered transfer fixture mechanism with variable spacing, including a frame 1, a mounting frame 2, two groups of orifice tube fixture assemblies 4 and a push-pull member 5. The mounting frame 2 is slidably mounted on the frame 1. That is to say, the staggered transfer of materials is realized by the sliding of the mounting frame 2 on the frame 1. An installation shaft 3 is installed on the mounting frame 2. The orifice tube fixture assemblies 4 are installed on the installation shaft 3 and slide along the axis of the installation shaft 3. The push-pull member 5 is used to drive the two groups of orifice tube fixture assemblies 4 to approach or move away from each other to realize the adjustment of the spacing between the two groups of orifice tube fixture assemblies 4. That is to say, the push-pull member 5 can push the two groups of orifice tube fixture assemblies 4 to slide back and forth along the axis of the installation shaft 3 to realize the adjustment of the spacing between the two groups of orifice tube fixture assemblies 4, so as to solve the requirements for different spacings during the staggered transfer process.

[0032] For the staggered transfer fixture mechanism with variable spacing provided by the present invention, during use, the frame 1 is installed at the use position, two rows of conveyors are placed side by side, and the size of the frame 1 is reduced. The frame 1 is placed above the two rows of conveyors. The mounting frame 2 is slidably mounted on the frame 1. The staggered transfer of materials is realized by the sliding of the mounting frame 2 on the frame 1, which shortens the time during the material transfer process and is beneficial to improving production efficiency. The orifice tube fixture assemblies 4 are installed on the installation shaft 3 and slide along the axis of the installation shaft 3. The push-pull member 5 is used to drive the two groups of orifice tube fixture assemblies 4 to approach or move away from each other to realize the adjustment of the spacing between the two groups of orifice tube fixture assemblies 4. Through this structure, the time for adjusting the spacing of the orifice tube fixture assemblies 4 can be reduced, and the number of structures for adjusting the spacing of the orifice tube fixture assemblies 4 can be reduced, so as to reduce the overall weight and assembly difficulty of the fixture. At the same time, the equal-spacing change between multiple orifice tubes can also be realized to meet the needs of enterprises.

[0033] It should be noted that the specific structure of the push-pull member 5 is not limited in the embodiments of the present invention. In some embodiments, the push-pull member 5 is one of an electric cylinder, a pneumatic cylinder, and a hydraulic cylinder, or an electrode lead screw structure can be adopted.

[0034] In addition, in the embodiments of the present utility model, there is no limitation on the number of jigs in the two sets of mouth tube jig assemblies 4, which can be selected according to production requirements.

[0035] In addition, in the embodiments of the present utility model, the width of the frame 1 is adjusted according to the actual situation, that is, the widths of the two rows of conveyors are adjusted.

[0036] Please refer to Figures 1 - 3 , in order to realize the transfer of soft bags between the two rows of conveyors, in some embodiments, the jig assembly further includes a flipping cylinder 6. The mounting shaft 3 is rotatably mounted on the mounting frame 2, and the flipping cylinder 6 is mounted on the mounting frame 2 and used to drive the mounting shaft 3 to rotate along its axis. That is to say, the rotation of the mounting shaft 3 is realized through the flipping cylinder 6, so that it can drive the two sets of mouth tube jig assemblies 4 mounted on the mounting shaft 3 to complete flipping, so as to complete the application for the structures of the two different rows of conveyors.

[0037] It should be noted that the description of the flipping cylinder 6 in the embodiments of the present utility model is not a fixed limitation. In some embodiments, an electric cylinder, a hydraulic cylinder, etc. can be used to replace the flipping cylinder 6 to work, or a motor can be used to drive the rotation of the mounting shaft 3.

[0038] In some embodiments, a spline extending along the axis direction is provided on the mounting shaft 3 to limit the rotation of the mouth tube jig assembly 4 along the axis direction of the mounting shaft 3. That is to say, by setting a limit on the axis rotation direction of the mouth tube jig assembly 4 on the mounting shaft 3, the mouth tube jig assembly 4 can be ensured to rotate along with the rotation of the mounting shaft 3 when the mounting shaft 3 rotates.

[0039] It should be noted that the description of using a spline in the embodiments of the present utility model is not a fixed limitation. In some embodiments, a mounting shaft 3 with a cross-section of a polygonal structure can be used, and the cooperation between the mouth tube jig assembly 4 and the mounting shaft 3 with a polygonal structure realizes the limiting effect on the axis rotation direction of the mouth tube jig assembly 4.

[0040] In some other embodiments, a limiting rod parallel to the axis of the mounting shaft 3 can be mounted on the mounting frame 2, and the sliding cooperation between the mouth tube jig assembly 4 and the mounting shaft 3 and the limiting rod realizes the limiting effect on the axis rotation direction of the mouth tube jig assembly 4 on the mounting shaft 3.

[0041] In some other embodiments, the cross-section of the mounting shaft 3 is polygonal, and a number of mouth tube jigs are restricted to match the mounting shaft 3, realizing the restriction of the rotation of the mouth tube jig assembly 4 along the axis direction of the mounting shaft 3. That is to say, by using a mounting shaft 3 with a cross-section of a polygonal structure and the cooperation between the mouth tube jig assembly 4 and the mounting shaft 3, the rotation of the mouth tube jig assembly 4 along the axis direction of the mounting shaft 3 is restricted.

[0042] It should be noted that the cross-sectional polygon structure of the mounting shaft 3 in the embodiments of the present utility model is not specifically limited. In some embodiments, it may adopt a square, hexagonal or octagonal cross-sectional structure.

[0043] Please refer to Figure 2 and Figure 3 In some embodiments, the two sets of mouthpiece clamp assemblies 4 are symmetrically arranged about the midpoint of the axis of the mounting shaft 3. That is to say, the two sets of mouthpiece clamps are symmetrically arranged, and the symmetry plane is the symmetry plane perpendicular to the axis of the mounting shaft 3. The two sets of mouthpiece clamp assemblies 4 both include a first mouthpiece clamp 401, a second mouthpiece clamp 402 and a connecting shaft 403. That is to say, the arrangement of the two sets of mouthpiece clamp assemblies 4 on the mounting shaft 3 is: the first mouthpiece clamp 401, the second mouthpiece clamp 402, the second mouthpiece clamp 402 and the first mouthpiece clamp 401. One end of the connecting shaft 403 is connected to the first mouthpiece clamp 401, and the other end of the connecting shaft 403 is fixedly connected to the second mouthpiece clamp 402. That is to say, the two ends of the connecting shaft 403 are respectively connected to the first mouthpiece clamp 401 and the second mouthpiece clamp 402, so as to realize the synchronous movement of the first mouthpiece clamp 401 and the second mouthpiece clamp 402. The pusher 5 is fixedly connected to the first mouthpiece clamps 401 in the two sets of mouthpiece clamp assemblies 4 respectively. That is to say, the pusher 5 is connected to the two first mouthpiece clamps 401 at the head and tail ends on the mounting shaft 3 and is not connected to the two second mouthpiece clamps 402. When the pusher 5 expands and contracts, it drives the two first mouthpiece clamps 401 to approach or move away from each other, and drives the two second mouthpiece clamps 402 to approach or move away from each other synchronously through the connecting shaft 403. That is to say, only one pusher 5 is used to drive the synchronous movement of the four mouthpiece clamps, and limiting mechanisms are provided at both the head and tail ends on the mounting shaft 3 to limit the position when the distance between the two first mouthpiece clamps 401 is the largest.

[0044] It should be noted that the embodiments of the present utility model do not limit the connection manner between the connecting shaft 403 and the first mouthpiece clamp 401 and the second mouthpiece clamp 402. In some embodiments, both ends can be fixedly connected to keep the distance between the first mouthpiece clamp 401 and the second mouthpiece clamp 402 fixed, or both ends can be slidably connected to make the distance between the first mouthpiece clamp 401 and the second mouthpiece clamp 402 variable.

[0045] In addition, in the embodiments of the present utility model, the pusher 5 is only connected to the two first mouthpiece clamps 401. When the pusher 5 extends to the limit, it will push the two first mouthpiece clamps 401 to reach the maximum interval. When the pusher 5 retracts to the limit, it will indirectly drive the two second mouthpiece clamps 402 to reach the minimum interval.

[0046] Please continue to refer to Figure 2 and Figure 3, in order to make the spacing of the mouthpiece clamps more controllable. In some embodiments, a first limiting plate 7 is mounted on the mounting shaft 3. The first limiting plate 7 is located between two groups of mouthpiece clamp assemblies 4 and is used to limit the minimum spacing between the two second mouthpiece clamps 402. That is to say, by mounting the first limiting plate 7 on the mounting shaft 3, when the pushing and pulling member 5 retracts to the limit, it will indirectly drive the two second mouthpiece clamps 402 to approach the first limiting plate 7. When the two second mouthpiece clamps 402 contact the first limiting plate 7, the minimum interval is reached, and the width of the first limiting plate 7 can be adjusted according to production needs, so as to control the spacing between the two second mouthpiece clamps 402 and adapt to the requirements of more models and usage scenarios.

[0047] It should be noted that the embodiment of the present utility model does not limit the connection manner between the first limiting plate 7 and the mounting shaft 3. In some embodiments, a detachable connection manner can be adopted, such as a bolt or a buckle manner, which is beneficial to replacing the first limiting plate 7 according to needs.

[0048] In order to further control the positions of multiple mouthpiece clamps, in some embodiments, the two groups of mouthpiece clamp assemblies 4 further include a second limiting plate 404. The second limiting plate 404 is located between the first mouthpiece clamp 401 and the second mouthpiece clamp 402 and is used to limit the maximum spacing between the two second mouthpiece clamps 402. That is to say, when the pushing and pulling member 5 indirectly drives the two second mouthpiece clamps 402 to move away from each other, they will be limited by the two second limiting plates 404, so as to control the maximum spacing between the two second mouthpiece clamps 402. At the same time, in order to further achieve the purpose of controlling the spacing of multiple mouthpiece clamps at equal intervals, in some embodiments, a sliding hole 411 is provided on the first mouthpiece clamp 401. The connecting shaft 403 is slidably mounted at the sliding hole 411, and a limiting block 412 for limiting the connecting shaft 403 from moving out of the sliding hole 411 is mounted on the connecting shaft 403. That is to say, the connecting shaft 403 is slidably connected to the first mouthpiece clamp 401, and the sliding overlap length between the connecting shaft 403 and the first mouthpiece clamp 401 is controlled by the limiting block 412.

[0049] During operation, the pushing and pulling member 5 drives the two first mouthpiece clamps 401 to move away. At this time, the connecting shaft 403 slides relative to the first mouthpiece clamp 401. When the limiting block 412 is limited by the first mouthpiece clamp 401, the first mouthpiece clamp 401 will drive the second mouthpiece clamp 402 to move through the connecting shaft 403. When the second mouthpiece clamp 402 contacts the second limiting plate 404, the adjustment of the expansion of the spacing of multiple mouthpiece clamps is realized.

[0050] When the push-pull member 5 drives the two first pipe clamps 401 to approach each other, the connecting shaft 403 slides relative to the first pipe clamp 401. When the overlapping length between the connecting shaft 403 and the first pipe clamp 401 reaches the maximum, the first pipe clamp 401 will drive the second pipe clamp 402 to move through the connecting shaft 403. When the second pipe clamp 402 contacts the first limiting plate 7, the adjustment of reducing the spacing between multiple pipe clamps is achieved.

[0051] At the same time, according to experiments and calculations, the position of the second limiting plate 404, the slidable distance between the connecting shaft 403 and the first pipe clamp 401, and the spacing between the first limiting plate 7 and the second limiting plate 404 can be adjusted. By changing the above data, the control of the spacing between multiple pipe clamps can be realized. That is to say, when multiple pipe clamps approach or move away from each other, an equal-spacing result can be obtained.

[0052] Through a push-pull member 5, the synchronous movement and fixation of multiple components can be achieved, reducing the manufacturing cost of the device. At the same time, the components to be controlled are reduced, greatly reducing the number of parts, thereby reducing the overall weight of the fixture.

[0053] It should be noted that the embodiment of the present utility model does not limit the connection manner between the limiting block 412 and the connecting shaft 403. In some embodiments, the limiting block 412 can be a nut and is installed on the connecting shaft 403 by threading. Therefore, by only rotating the nut, the adjustment of the sliding distance between the limiting block 412 and the connecting shaft 403 relative to the first pipe clamp 401 can be realized, which is convenient, fast, and has a better use effect.

[0054] In some embodiments, the push-pull member 5 is an electric cylinder. In other embodiments, the push-pull member 5 can also be a cylinder, a hydraulic cylinder, or a lead screw structure.

[0055] The frame 1 is installed at the use position, two rows of conveyors are arranged side by side, and the size of the frame 1 is reduced. The frame 1 is placed above the two rows of conveyors. The mounting frame 2 is slidably installed on the frame 1. By sliding the mounting frame 2 on the frame 1, the staggered transfer of materials is realized, shortening the time in the material transfer process, which is beneficial to improving production efficiency. The pipe clamp assembly 4 is installed on the mounting shaft 3 and slides along the axis of the mounting shaft 3. The push-pull member 5 is used to drive the two groups of pipe clamp assemblies 4 to approach or move away from each other to realize the adjustment of the spacing between the two groups of pipe clamp assemblies 4. Through this structure, the time for adjusting the spacing of the pipe clamp assembly 4 can be reduced, and the number of structures for adjusting the spacing of the pipe clamp assembly 4 can be reduced, so as to reduce the overall weight and assembly difficulty of the fixture. At the same time, an equal-spacing change between multiple pipe clamps can also be realized to meet the needs of the enterprise.

[0056] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0057] The above has introduced in detail a variable-spacing staggered transfer fixture mechanism provided by the present utility model. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A staggered transfer fixture mechanism with variable spacing, characterized in that Comprising: A frame (1); A mounting bracket (2), slidably mounted on the frame (1), and a mounting shaft (3) is mounted on the mounting bracket (2); Two sets of mouth tube clamping assemblies (4), the mouth tube clamping assemblies (4) are mounted on the mounting shaft (3) and slide along the axial length direction of the mounting shaft (3); A push-pull member (5) for driving the two sets of mouth tube clamping assemblies (4) to approach or move away from each other, so as to adjust the distance between the two sets of mouth tube clamping assemblies (4).

2. The variable-spacing staggered transfer fixture mechanism according to claim 1, characterized in that, The mounting shaft (3) is rotatably mounted on the mounting bracket (2), and further comprising: A flipping cylinder (6), the flipping cylinder (6) is mounted on the mounting bracket (2) and is used for driving the mounting shaft (3) to rotate along its axis.

3. The variable-spacing staggered transfer fixture mechanism according to claim 2, wherein, A spline extending along the axial direction of the mounting shaft (3) is provided on the mounting shaft (3) to limit the rotation of the two sets of mouth tube clamping assemblies (4) along the axial direction of the mounting shaft (3).

4. The variable-spacing staggered transfer fixture mechanism according to claim 2, characterized in that, The cross-section of the mounting shaft (3) is polygonal, and the two sets of mouth tube clamping assemblies (4) are matched with the mounting shaft (3) to limit the rotation of the two sets of mouth tube clamping assemblies (4) along the axial direction of the mounting shaft (3).

5. A variable-spacing staggered transfer fixture mechanism according to claim 1, characterized in that The two sets of mouth tube clamping assemblies (4) are symmetrically arranged about the midpoint of the axis of the mounting shaft (3), and the two sets of mouth tube clamping assemblies (4) both include: A first mouth tube clamp (401) and a second mouth tube clamp (402); A connecting shaft (403), one end of the connecting shaft (403) is connected to the first mouth tube clamp (401), and the other end of the connecting shaft (403) is fixedly connected to the second mouth tube clamp (402); The push-pull member (5) is fixedly connected to the first mouth tube clamp (401) in the two sets of mouth tube clamping assemblies (4) respectively; When the push-pull member (5) expands and contracts, it drives the two first mouth tube clamps (401) to approach or move away from each other, and synchronously drives the two second mouth tube clamps (402) to approach or move away from each other through the connecting shaft (403).

6. The variable-spacing staggered transfer fixture mechanism according to claim 5, characterized in that A first limiting plate (7) is mounted on the mounting shaft (3), and the first limiting plate (7) is located between the two sets of mouth tube clamping assemblies (4) and is used for limiting the minimum distance between the two second mouth tube clamps (402).

7. The variable-spacing staggered transfer fixture mechanism according to claim 6, characterized in that, The two sets of mouth tube clamping assemblies (4) further include: A second limiting plate (404), the second limiting plate (404) is located between the first mouth tube clamp (401) and the second mouth tube clamp (402) and is used for limiting the maximum distance between the two second mouth tube clamps (402).

8. The variable-spacing staggered transfer fixture mechanism according to claim 7, characterized in that, A sliding hole (411) is provided on the first mouth tube clamp (401), the connecting shaft (403) is slidably mounted at the sliding hole (411), and a limiting block (412) for limiting the connecting shaft (403) from moving out of the sliding hole (411) is mounted on the connecting shaft (403).

9. A variable-spacing staggered transfer fixture mechanism according to any one of claims 1-8, characterized in that, The push-pull member (5) adopts an electric cylinder.

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