Fixing mechanism and paper tube production apparatus

Abstract

The utility model provides a kind of fixed mechanism and paper tube production equipment, the fixed mechanism includes fixed plate, bracket assembly and at least two oppositely arranged tensioning blocks, bracket assembly is fixedly connected with fixed plate;Tensioning block is elastically connected with bracket assembly, and tensioning block can do elastic movement along the radial of bracket assembly;When fixed fixture, fixture port extrudes tensioning block along the outer edge of tensioning block, and tensioning block clamps fixture under the action of elastic force.The present application is elastically connected with bracket assembly by setting tensioning block, so that fixture will extrude tensioning block when fixture is installed outside tensioning block, so that tensioning block is always subjected to elastic force, and under the action of elastic force, tensioning block moves to the direction of fixture to clamp fixture, so as to realize automatic fixing clamping fixture, easy to operate, save time and effort, to improve production efficiency, and fixed clamping mode is reliable, save space position;At the same time, the structure of fixed mechanism is simple, easy to machine, less investment, easy to industrialization.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing, and in particular to a fixing mechanism and paper tube production equipment. Background Technology

[0002] In specific processing stages of paper ring products such as paper cores and paper tubes, the scribing lines on the surface of the semi-finished paper rings produced by the ring cutter are usually in a spiral upward state. To meet subsequent usage requirements, a special fixture is needed to remove the rings from the equipment, and a straightening process is required to straighten the spiral scribing lines. During this process, the fixture needs to be firmly positioned by a fixing mechanism, and then a rotating mechanism drives the paper rings, using their relative movement with the fixed fixture to straighten the scribing lines.

[0003] Currently, fixed fixtures generally use manual mechanical clamping. Although this method can ensure that the fixture is fixed in position during operation, it has the problems of cumbersome operation, high labor intensity, long single-step operation time, and low overall production efficiency.

[0004] To address these issues, an automatic clamping and fixing mechanism is typically used, which requires an external power source and occupies additional space. In this application scenario, there is often insufficient space below the fixing mechanism to accommodate drive components such as cylinders and motors; or, since there is a rotating device below, if an external power line is forcibly introduced, complex mechanisms such as rotary joints (slip rings) must be added. This not only significantly increases the complexity and manufacturing cost of the system but also introduces new points of failure and maintenance requirements. Summary of the Invention

[0005] The present invention provides a fixing mechanism and paper tube production equipment. The fixing mechanism has a simple structure, can realize automated fixing of clamping fixtures, is easy to operate, and thus improves production efficiency.

[0006] This utility model provides a fixing mechanism, which includes: Fixing plate; The bracket assembly is fixedly connected to the fixing plate; At least two tensioning blocks are arranged opposite each other, the tensioning blocks are elastically connected to the support assembly, and the tensioning blocks can elastically move along the radial direction of the support assembly; When fixing the fixture, the fixture port presses the tension block along the outer edge of the tension block, and the tension block clamps the fixture under the action of elastic force.

[0007] In the fixing mechanism provided by this utility model, the bracket assembly includes a guide bracket, which is fixedly connected to the fixing plate. The guide bracket is provided with a guide portion, which extends radially outward from the center of the guide bracket. The guide portion is elastically connected to the tensioning block, and the tensioning block slides between the two ends of the guide portion.

[0008] In the fixing mechanism provided by this utility model, the bracket assembly further includes an elastic element, which is sleeved on the outside of the guide portion, and the tensioning block is sleeved on the outside of the elastic element and compresses the elastic element.

[0009] In the fixing mechanism provided by this utility model, the tensioning block is provided with a through hole extending along its length and penetrating both ends. The bracket assembly also includes a locking member, one end of which is locked to the outside of the through hole, and the other end passes through the through hole and is locked and fixed to the guide portion.

[0010] In the fixing mechanism provided by this utility model, the inner side of the tensioning block is an arc structure, and the center of the guide bracket is provided with an abutment part, which is a cylindrical structure and abuts against the inner side of the tensioning block.

[0011] In the fixing mechanism provided by this utility model, the diameter of the inner side of the tensioning block is larger than the diameter of the outer side of the abutment.

[0012] In the fixing mechanism provided by this utility model, the tensioning block has a fan-shaped structure.

[0013] In the fixing mechanism provided by this utility model, the difference between the inner diameter of the port of the fixture and the outer diameter of the tensioning block is between 0.15mm and 0.25mm.

[0014] In the fixing mechanism provided by this utility model, the fixing mechanism further includes a fixing seat, which is fixedly connected to the bottom end of the fixing plate.

[0015] This utility model also provides a paper tube production device, which includes: A fixing mechanism, wherein the fixing mechanism is any of the fixing mechanisms described above.

[0016] This application achieves automated fixture clamping by setting the tensioning block and the support assembly to be elastically connected. When the fixture is installed outside the tensioning block, the fixture will squeeze the tensioning block, so that the tensioning block is always subjected to elastic force. Under the action of elastic force, the tensioning block moves towards the fixture to clamp the fixture, thereby realizing automated fixture clamping. The operation is simple, time-saving and labor-saving, thus improving production efficiency. The clamping method is reliable and saves space. At the same time, the structure of the fixing mechanism is simple, easy to machine, requires less investment, and is easy to industrialize. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the fixing mechanism and fixture in the embodiments of this utility model; Figure 2 This is a cross-sectional view of the fixing mechanism and fixture in the embodiments of this utility model; Figures 3a-3c This is an assembly drawing of the fixing mechanism and fixture in an embodiment of this utility model; Figure 4 This is a structural diagram of the fixing mechanism in an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the fixing mechanism in an embodiment of this utility model; Figure 6 This is an exploded view of the fixing mechanism in an embodiment of this utility model.

[0019] The labels for the attached figures are as follows: 1. Fixing mechanism; 11. Fixing plate; 12. Support assembly; 121. Guide support; 1211. Guide part; 122. Elastic element; 123. Locking element; 124. Abutment part; 13. Tensioning block; 131. Through hole; 14. Fixing seat; 2. Fixture. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] Reference Figures 1 to 6 The diagram illustrates an embodiment of the fixing mechanism 1 and paper tube production equipment of this utility model. The fixing mechanism 1 includes a fixing plate 11, a support assembly 12, and at least two opposing tension blocks 13. The support assembly 12 is fixedly connected to the fixing plate 11. The tension blocks 13 are elastically connected to the support assembly 12, and the tension blocks 13 can elastically move along the radial direction of the support assembly 12. When fixing the fixture 2, the port of the fixture 2 presses the tension blocks 13 along the outer edge of the tension blocks 13, and the tension blocks 13 clamp the fixture 2 under the action of elastic force.

[0022] Specifically, the fixing mechanism 1 is used to fix the fixture 2 so that the fixture 2 does not move, rotate, or shake during use, thereby ensuring that the operator can use the fixture 2 to perform a series of production activities. The specific fixture 2 is not limited here. Since the fixing mechanism 1 currently used requires manual operation, it results in cumbersome operation and low production efficiency. Therefore, this embodiment provides a fixing mechanism 1 that can automatically fix and clamp the fixture 2. It has a simple structure, can automatically fix and clamp the fixture 2, is easy to operate, and thus improves production efficiency.

[0023] The fixing mechanism 1 includes a fixing plate 11, a support assembly 12, and at least two opposing tension blocks 13. The fixing plate 11 is used to support and fix other structural components of the fixing mechanism 1. The support assembly 12 is fixedly connected to the fixing plate 11 and is used to connect to and support the tension blocks 13, allowing the tension blocks 13 to move elastically on it.

[0024] The tensioning blocks 13 are used to fix the fixture 2. The pressure exerted by the tensioning blocks 13 under elastic force clamps the fixture 2, preventing it from moving. There are at least two tensioning blocks 13, arranged opposite each other on both sides of the support assembly 12, thereby clamping and fixing the opposite sides of the fixture 2 to increase stability. If there are more than two tensioning blocks 13, they are spaced apart circumferentially around the support assembly 12, allowing them to be evenly distributed around the perimeter of the fixture 2 and clamping it circumferentially, further increasing stability. In the initial state, the tensioning blocks 13 are separated; in the installed state of the fixing mechanism 1 and the fixture 2, the tensioning blocks 13 are close together.

[0025] The tensioning block 13 is elastically connected to the support assembly 12, and the tensioning block 13 can move elastically along the radial direction of the support assembly 12, that is, the tensioning block 13 can move closer to or away from the center of the support assembly 12 along the radial direction of the support assembly 12, thereby clamping the fixture 2 under the elastic force of each tensioning block 13.

[0026] To ensure that the fixture 2 can be clamped and fixed by the fixing mechanism 1, the fixture 2 is configured as a hollow cylindrical structure. The port of the fixture 2 is connected to the outside and the inside of the fixture 2, and the radius of the port of the fixture 2 needs to be smaller than the radius of the tension block 13 to the center of the support assembly 12 in the initial state, so as to ensure that the fixture 2 can squeeze the tension block 13 to generate elastic force.

[0027] Therefore, when assembling the fixture 2 and the fixing mechanism 1, the port of the fixture 2 is directly aligned with the outer edge of the tensioning block 13 to fit over the outside of each tensioning block 13. At this time, the fixture 2 will squeeze each tensioning block 13, so that the tensioning block 13 will make elastic movement under the action of external force, that is, the tensioning block 13 is compressed and moves towards the center of the support assembly 12; when the fixture 2 does not apply force to the tensioning block 13, the tensioning block 13 will be subjected to elastic force. The spring force directed towards the outside of the fixture 2 causes the tensioning block 13 to move toward the fixture 2 until it abuts against the inner wall of the fixture 2. Under the combined action of multiple tensioning blocks 13, the multiple tensioning blocks 13 will clamp the fixture 2. Due to the spring force of the tensioning blocks 13, the inner diameter surface of the fixture 2 is kept in a fixed state, thereby fixing the fixture 2 and the fixing mechanism 1 to ensure that the fixture 2 will not move or shake.

[0028] This application sets the tensioning block 13 and the support assembly 12 in an elastic connection so that when the fixture 2 is installed outside the tensioning block 13, the fixture 2 will squeeze the tensioning block 13, so that the tensioning block 13 is always subjected to elastic force. Under the action of elastic force, the tensioning block 13 moves towards the fixture 2 to clamp the fixture 2, thereby realizing the automated fixing and clamping of the fixture 2. The operation is simple, time-saving and labor-saving, thereby improving production efficiency. The fixing and clamping method is reliable and saves space. At the same time, the fixing mechanism 1 has a simple structure, is easy to machine, requires less investment, and is easy to industrialize.

[0029] In one embodiment, reference is made to Figure 2 , Figures 5 to 6As shown, the support assembly 12 includes a guide bracket 121, which is fixedly connected to the fixing plate 11. The guide bracket 121 has a guide portion 1211, which extends radially outward from the center of the guide bracket 121. The guide portion 1211 is elastically connected to the tensioning block 13, and the tensioning block 13 slides between the two ends of the guide portion 1211. Specifically, the support assembly 12 includes a guide bracket 121, which guides the movement of the tensioning block 13, ensuring that the tensioning block 13 can move elastically along the radial direction of the guide bracket 121. The guide bracket 121 is fixedly connected to the fixing plate 11, thereby stably fixing the guide bracket 121 to the fixing plate 11. The guide bracket 121 is provided with a guide portion 1211, which is used to guide the movement of the tension block 13. The number of guide portions 1211 is the same as the number of tension blocks 13, and one guide portion 1211 is elastically connected to one tension block 13, thereby ensuring that each tension block 13 can move elastically along the guide portion 1211.

[0030] The guide portion 1211 extends radially outward from the center of the guide bracket 121, and multiple guide portions 1211 are spaced apart. The guide portion 1211 is elastically connected to the tensioning block 13, so that the tensioning block 13 can move elastically along the length direction of the guide portion 1211, and the tensioning block 13 can slide between the two ends of the guide portion 1211. That is, the tensioning block 13 can slide close to or away from the center of the guide bracket 121 at the two ends of the guide portion 1211, thereby realizing the automated clamping and fixing fixture 2.

[0031] In this embodiment, by setting the guide bracket 121, the tensioning block 13 can move elastically on the guide portion 1211 of the guide bracket 121, thereby improving the stability of the movement of the tensioning block 13 and preventing the tensioning block 13 from deviating from the movement path and affecting the fixing function of the fixing mechanism 1.

[0032] More specifically, the guide bracket 121 is provided with a countersunk hole, which is located between the center of the guide bracket 121 and the guide portion 1211. The countersunk hole is used for the fixed connection between the guide bracket 121 and the fixing plate 11, thereby improving the stability of the guide bracket 121 and the fixing plate 11.

[0033] In another embodiment, the guide bracket 121 and the fixing plate 11 are integrally formed.

[0034] In a specific embodiment, refer to Figure 2 , Figures 5 to 6 As shown, the support assembly 12 further includes an elastic element 122, which is sleeved on the outside of the guide portion 1211. The tensioning block 13 is sleeved on the outside of the elastic element 122 and compresses the elastic element 122. Specifically, the support assembly 12 and the tensioning block 13 are elastically connected. The support assembly 12 further includes the elastic element 122, which is used to connect the guide support 121 and the tensioning block 13, so that the tensioning block 13 can elastically move on the guide support 121. The elastic element 122 is sleeved on the outside of the guide portion 1211, that is, the elastic element 122 extends along the length direction of the guide portion 1211, and the elastic element 122 can perform elastic movement on the outside of the guide portion 1211, that is, the elastic element 122 can extend or compress along the length direction of the guide portion 1211 on the outside of the guide portion 1211; the tensioning block 13 is sleeved on the outside of the elastic element 122, and the tensioning block 13 compresses the elastic element 122, and the elastic element 122 slides between the tensioning block 13 and the guide portion 1211.

[0035] When the fixture 2 compresses the tension block 13, the tension block 13 moves toward the center of the guide bracket 121. At this time, the tension block 13 compresses the elastic element 122, thereby causing the tension block 13 to be subjected to elastic force. Under the action of elastic force, the tension block 13 moves toward the fixture 2 and clamps the fixture 2.

[0036] The support assembly 12 in this embodiment has a simple and compact structure with a high degree of integration, which can reduce the space occupied by the fixing mechanism 1.

[0037] In one embodiment, reference is made to Figure 2 , Figures 5 to 6As shown, the tensioning block 13 has a through hole 131 extending along its length and penetrating both ends. The bracket assembly 12 also includes a locking member 123. One end of the locking member 123 is engaged outside the through hole 131, and the other end passes through the through hole 131 and is locked and fixed to the guide portion 1211. Specifically, the tensioning block 13 is sleeved on the outside of the elastic member 122, and the elastic member 122 is sleeved on the outside of the guide portion 1211. That is, the tensioning block 13 is sleeved on the outside of the guide portion 1211, and the elastic member 122 slides between the tensioning block 13 and the guide portion 1211. The tensioning block 13 is provided with through holes 131 extending through both ends of it, and the through holes 131 extend along the length direction of the tensioning block 13. The elastic member 122 and the guide portion 1211 are both located inside the through holes 131. The bracket assembly 12 also includes a locking member 123, which is used to limit the tensioning block 13 and prevent the tensioning block 13 from disengaging from the guide portion 1211 due to the action of the elastic member 122. One end of the locking member 123 is engaged with the outside of the through hole 131, and the other end of the locking member 123 passes through the through hole 131 and is locked and fixed with the guide portion 1211, so that one side of the tensioning block 13 is engaged with one end of the locking member 123, and the tensioning block 13 slides between the end of the guide portion 1211 near the center of the guide bracket 121 and the locking member 123, so as to improve the sliding stability of the tensioning block 13 and improve the structural stability of the fixing mechanism 1.

[0038] More specifically, the diameter of the through hole 131 is larger than the diameter of the elastic element 122, the diameter of the elastic element 122 is larger than the diameter of the guide portion 1211, and the diameter of the locking member 123 is smaller than the diameter of the guide portion 1211. In this embodiment, the locking member 123 is a screw, and the guide portion 1211 is provided with a threaded hole. The screw is threadedly connected to the threaded hole, making installation simple.

[0039] In one embodiment, reference is made to Figure 6As shown, the inner surface of the tension block 13 is an arc structure, and the center of the guide bracket 121 is provided with an abutment portion 124, which is a cylindrical structure. The abutment portion 124 abuts against the inner surface of the tension block 13. Specifically, the inner surface of the tension block 13 refers to the side of the tension block 13 near the center of the guide bracket 121, and the inner surface of the tension block 13 is set as an arc structure; the center of the guide bracket 121 is provided with an abutment portion 124, which is an upwardly protruding cylindrical structure. The abutment portion 124 is used to abut against the inner surface of the tension block 13. When the tension block 13 is squeezed by the fixture 2, the tension block 13 slides towards the center of the guide bracket 121 until the tension block 13 abuts against the abutment portion 124 of the guide bracket 121. At this time, the tension block 13 stops sliding, and this state is the maximum compression of the tension block 13.

[0040] Therefore, when the tensioning block 13 and the abutting part 124 abut, the arc surface of the tensioning block 13 abuts with the arc surface of the abutting part 124, so that the inner side of the tensioning block 13 can completely fit the outer side of the abutting part 124, thereby improving the stability of the tensioning block 13 and the guide bracket 121, as well as the smoothness of the tensioning block 13 during movement.

[0041] In a specific embodiment, the diameter of the inner side of the tensioning block 13 is larger than the diameter of the outer side of the abutment portion 124 (not shown in the figure). Specifically, under the pressing action of the fixture 2, the tensioning block 13 will converge towards the abutment portion 124. The inner side of the tensioning block 13 has an arc structure, and the abutment portion 124 has a cylindrical structure. The diameter of the inner side of the tensioning block 13 is larger than the diameter of the outer side of the abutment portion 124 to ensure that there is a margin between the tensioning block 13 and the abutment portion 124, preventing the tensioning block 13 from hitting the abutment portion 124 when converging towards it. This improves the smoothness and stability of the operation of the tensioning block 13 and also increases the service life of the fixing mechanism 1.

[0042] In a specific embodiment, refer to Figures 1 to 6As shown, the tensioning block 13 has a fan-shaped structure. Specifically, since the fixture 2 in this embodiment has a cylindrical structure and a hollow structure, when the fixture 2 is installed onto the fixing mechanism 1, the port of the fixture 2 is aligned with the outer edge of the tensioning block 13 to fit over the outside of each tensioning block 13. At this time, the fixture 2 will squeeze each tensioning block 13, so that the tensioning block 13 makes elastic movement under the action of external force, that is, the tensioning block 13 is compressed and moves towards the center of the support assembly 12; when the fixture 2 does not apply force to the tensioning block 13, the tensioning block 13 is in Under the action of elastic force, the tensioning block 13 will be subjected to elastic force towards the outside of the fixture 2, thereby causing the tensioning block 13 to move towards the fixture 2 until it abuts against the inner wall of the fixture 2. Under the combined action of multiple tensioning blocks 13, multiple tensioning blocks 13 will clamp the fixture 2. Due to the action of the tensioning blocks 13 under the elastic force of the spring, the inner diameter surface of the fixture 2 is kept in a fixed state, thereby making the fixture 2 and the fixing mechanism 1 fixedly connected, so as to ensure that the fixture 2 will not move or shake.

[0043] Therefore, when assembling the fixture 2 and the fixing mechanism 1, the tensioning block 13 is located inside the fixture 2, and the outer edge of the tensioning block 13 abuts against the inner wall of the fixture 2. To ensure that the tensioning block 13 is in close contact with the inner wall of the fixture 2, in this embodiment, the tensioning block 13 is set as a fan-shaped structure, that is, the outer wall of the tensioning block 13 is an arc structure, thereby ensuring that the outer side of the tensioning block 13 is in close contact with the fixture 2, so as to better clamp the fixture 2. At the same time, when the user presses the fixture 2 onto the tensioning block 13, it can save time and effort and improve installation efficiency; and the structure of the tensioning block 13 is simple and compact, reducing production costs and space occupation.

[0044] More specifically, there are four tensioning blocks 13, and the four tensioning blocks 13 are located in the four directions of the guide bracket 121, that is, the four tensioning blocks 13 are located in the east, west, south and north directions of the guide bracket 121, so that the tensioning blocks 13 can better clamp the fixture 2 in various directions and improve the fixation of the fixing mechanism 1.

[0045] In one embodiment, reference is made to Figure 2As shown, the difference between the inner diameter of the port of the fixture 2 and the outer diameter of the tension block 13 is between 0.15mm and 0.25mm. Specifically, since the fixture 2 in this embodiment is a cylindrical structure and is hollow, when the fixture 2 is installed on the fixing mechanism 1, the port of the fixture 2 is aligned with the outer edge of the tension block 13 to fit over the outer side of each tension block 13. At this time, the fixture 2 will squeeze each tension block 13 so that the tension block 13 can move elastically under the action of external force. Therefore, when assembling the fixture 2 and the fixing mechanism 1, the tensioning block 13 is located inside the fixture 2, and the outer side of the tensioning block 13 abuts against the inner side of the port of the fixture 2. The inner diameter of the port of the fixture 2 is larger than the diameter of the outer side of the tensioning block 13. The inner side of the port of the fixture 2 refers to the inner side of the port of the fixture 2 that is fitted onto the outer side of the tensioning block 13. The outer side of the tensioning block 13 refers to the side of the tensioning block 13 that abuts against the fixture 2. The difference between the inner diameter of the port of the fixture 2 and the diameter of the outer side of the tensioning block 13 is between 0.15mm and 0.25mm, so that the tensioning block 13 can be smoothly inserted into the port of the fixture 2, thereby better fixing the fixture 2 and improving the fixing stability of the fixing mechanism 1.

[0046] Furthermore, the difference between the inner diameter of the port of the fixture 2 and the outer diameter of the tensioning block 13 is 0.2 mm.

[0047] In one embodiment, reference is made to Figure 2 , Figure 3b and Figure 6 As shown, the fixing mechanism 1 further includes a fixing base 14, which is fixedly connected to the bottom end of the fixing plate 11. Specifically, the fixing mechanism 1 also includes a fixing base 14, which is used to connect the fixing plate 11 and other mechanisms. That is, the fixing base 14 allows the entire fixing mechanism 1 to be mounted on other mechanisms, or it allows the fixing mechanism 1 to be used independently. Therefore, the fixing base 14 improves the practicality and ease of installation of the fixing mechanism 1.

[0048] More specifically, the fixing plate 11 is provided with a plurality of countersunk holes along the outer periphery of the guide bracket 121, the countersunk holes being used to fix the fixing plate 11 and the fixing base 14.

[0049] This application also provides a paper tube production device (not shown in the figure), which includes a fixing mechanism 1. The fixing mechanism 1 is any of the fixing mechanisms described above. Since the fixing mechanism 1 has been described in detail in the above embodiments, it will not be described again here.

[0050] The paper tube production equipment described in this application employs the fixing mechanism 1, which has a simple structure and can automatically fix the clamping fixture 2. It is easy to operate, thereby making the paper tube production equipment highly efficient and improving its competitiveness.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A fixing mechanism, characterized in that, include: Fixing plate; The bracket assembly is fixedly connected to the fixing plate; At least two tensioning blocks are arranged opposite each other, the tensioning blocks are elastically connected to the support assembly, and the tensioning blocks can elastically move along the radial direction of the support assembly; When fixing the fixture, the fixture port presses the tension block along the outer edge of the tension block, and the tension block clamps the fixture under the action of elastic force.

2. The fixing mechanism according to claim 1, characterized in that, The support assembly includes a guide bracket, which is fixedly connected to the fixing plate. The guide bracket has a guide portion that extends radially outward from the center of the guide bracket. The guide portion is elastically connected to the tensioning block, and the tensioning block slides between the two ends of the guide portion.

3. The fixing mechanism according to claim 2, characterized in that, The support assembly also includes an elastic element, which is sleeved on the outside of the guide portion, and the tensioning block is sleeved on the outside of the elastic element and compresses the elastic element.

4. The fixing mechanism according to claim 2, characterized in that, The tensioning block has through holes extending along its length and penetrating both ends. The bracket assembly also includes a locking member, one end of which is engaged outside the through hole, and the other end of which passes through the through hole and is locked and fixed to the guide portion.

5. The fixing mechanism according to claim 2, characterized in that, The inner side of the tensioning block has an arc structure, and the center of the guide bracket has an abutment part, which has a cylindrical structure and abuts against the inner side of the tensioning block.

6. The fixing mechanism according to claim 5, characterized in that, The diameter of the inner side of the tensioning block is larger than the diameter of the outer side of the abutment.

7. The fixing mechanism according to claim 1, characterized in that, The tensioning block has a fan-shaped structure.

8. The fixing mechanism according to claim 7, characterized in that, The difference between the inner diameter of the port of the fixture and the outer diameter of the tensioning block is between 0.15mm and 0.25mm.

9. The fixing mechanism according to claim 1, characterized in that, The fixing mechanism also includes a fixing seat, which is fixedly connected to the bottom end of the fixing plate.

10. A paper tube production equipment, characterized in that, include: A fixing mechanism, wherein the fixing mechanism is any one of claims 1-9.

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