Broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines

Abstract

The present invention relates to the technical field of clamping mechanisms, and in particular to a broken band buffer clamping mechanism suitable for small and medium-sized stretching machines, comprising a clamping seat, an upper guide groove, an upper jaw, a lower guide groove and a lower jaw; the upper guide groove is installed on the top of the clamping cavity through a plurality of first upper elastic members; the upper jaw is provided with one or more second upper elastic members capable of abutting against the side wall of the clamping cavity; the lower guide groove is installed on the bottom of the clamping cavity through a plurality of first lower elastic members; the lower jaw is provided with one or more second lower elastic members capable of abutting against the side wall of the clamping cavity. When a sheet material breaks, the first upper elastic member can be deformed along its own axial direction to protect the top of the clamping cavity. The second upper elastic member and the second lower elastic member can be deformed along their own axial direction to protect the side wall of the clamping cavity. The first lower elastic member can be deformed along its own axial direction to protect the bottom of the clamping cavity.

Description

Technical Field

[0001] The invention relates to the technical field of clamping mechanisms, and in particular to a broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines. Background Art

[0002] As a key equipment in the production line of high-quality aluminum alloy plates, the aluminum alloy plate stretching machine stretches the plate by clamping it with the jaws, which improves the stress distribution inside the plate and determines the quality of the finished plate. During the stretching process of the plate, the plate may break due to quality defects inside the plate or cracks on the edge of the plate. When the plate breaks, the clamp seat may be damaged. The maintenance of the clamp seat is time-consuming and costly. Therefore, how to extend the service life of the clamp seat has become a technical problem that needs to be solved urgently by technicians in this field. Summary of the invention

[0003] The invention provides a broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines, which is used to solve the problem of how to prolong the service life of a clamping seat.

[0004] The present invention provides a broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines, comprising:

[0005] A clamping seat, formed with a clamping cavity;

[0006] An upper guide groove is mounted on the top of the clamping cavity through a plurality of first upper elastic members;

[0007] The upper jaw is slidably mounted on the bottom of the upper guide groove, and is provided with one or more second upper elastic members capable of abutting against the side wall of the clamping cavity;

[0008] A lower guide groove is installed at the bottom of the clamping cavity through a plurality of first lower elastic members;

[0009] The lower jaw is slidably mounted on the top of the lower guide groove, and is provided with one or more second lower elastic members capable of abutting against the side wall of the clamping cavity.

[0010] In some of the embodiments, a plurality of upper threaded holes are formed on the top of the clamping cavity, and correspondingly, a plurality of upper threaded holes are also formed on the upper guide groove;

[0011] Each first upper elastic member comprises:

[0012] An upper threaded sleeve is threaded into an upper threaded hole in the clamping cavity;

[0013] An upper bolt is screwed into an upper threaded hole in the upper guide groove and an upper threaded sleeve, and an upper nut is arranged on the top;

[0014] The upper disc spring is sleeved on the upper bolt, with the top end abutting against the upper nut and the bottom end abutting against the upper threaded sleeve;

[0015] A plurality of lower threaded holes are formed at the bottom of the clamping cavity, and correspondingly, a plurality of lower threaded holes are also formed on the lower guide groove;

[0016] Each first lower elastic member comprises:

[0017] A lower threaded sleeve is threaded into a lower threaded hole in the clamping cavity;

[0018] A lower bolt is threadedly connected in a lower threaded hole of the lower guide groove and in a lower threaded sleeve, and a lower nut is arranged at the bottom end;

[0019] The lower disc spring is sleeved on the lower bolt, with the bottom end abutting against the lower nut and the top end abutting against the lower threaded sleeve.

[0020] In some embodiments, each first upper elastic member further comprises:

[0021] An upper slotted nut, screwed to the bottom end of the upper bolt;

[0022] An upper cotter pin is mounted on an upper slotted nut;

[0023] Each first lower elastic member further comprises:

[0024] A lower slotted nut, screwed onto the top end of the lower bolt;

[0025] Lower cotter pin, installed on the lower slotted nut.

[0026] In some embodiments, the second upper elastic member and the second lower elastic member are elastic damping body buffers.

[0027] In some of the embodiments, an upper slide rail is provided at the bottom of the upper guide groove;

[0028] An upper slide groove matching the upper slide rail is provided at the top of the upper jaw;

[0029] A lower slide rail is provided at the top of the lower guide groove;

[0030] The bottom of the lower jaw is provided with a sliding groove matched with the lower sliding rail.

[0031] In some embodiments, the clamping base includes:

[0032] Middle matrix;

[0033] An upper base body, mounted on an upper portion of one side of the middle base body;

[0034] The lower base is installed at the lower part of one side of the middle base; the clamping cavity is formed between the lower base and the upper base.

[0035] In some embodiments, an upper rope hole is formed on the upper portion of the clamp seat, and a lower rope hole is formed on the lower portion;

[0036] Also includes:

[0037] The upper drive cylinder has an inclined axis;

[0038] An upper traction rope, one end of which is connected to the output shaft of the upper driving cylinder, and the other end of which passes through the upper rope threading hole and is connected to the upper jaw;

[0039] The lower driving cylinder has an inclined axis;

[0040] One end of the lower traction rope is connected to the output shaft of the lower driving cylinder, and the other end passes through the lower rope hole and is connected to the lower jaw.

[0041] In some embodiments, an upper clearance hole and a lower clearance hole are opened in the middle of the clamp seat;

[0042] Also includes:

[0043] Synchronous hydraulic cylinder, with output shaft facing toward the clamping seat;

[0044] The synchronous frame is mounted on the output shaft of the synchronous hydraulic cylinder and can move toward or away from the clamping seat;

[0045] The upper clamping hydraulic cylinder is installed on the upper part of the synchronous frame and can move toward or away from the clamping seat along with the synchronous frame;

[0046] An upper push rod, one end of which is fixedly connected to the output shaft of the upper clamping hydraulic cylinder, and the other end of which passes through the upper clearance hole and can abut against the upper jaw;

[0047] The lower clamping hydraulic cylinder is installed at the lower part of the synchronous frame and can move toward or away from the clamping seat along with the synchronous frame;

[0048] One end of the lower push rod is fixedly connected to the output shaft of the lower clamping hydraulic cylinder, and the other end can abut against the lower jaw after passing through the lower clearance hole.

[0049] The beneficial effects of the present invention are as follows: The broken belt buffer clamping mechanism of the present invention, which is suitable for small and medium-sized stretching machines, is provided with an upper guide groove, and the upper guide groove is installed on the top of the clamping cavity through a plurality of first upper elastic members. One or more second upper elastic members capable of abutting against the side wall of the clamping cavity are passed through the upper jaw. The lower guide groove is installed on the bottom of the clamping cavity through a plurality of first lower elastic members. One or more second lower elastic members capable of abutting against the side wall of the clamping cavity are passed through the lower jaw. When the sheet material breaks, the first upper elastic member can be deformed along its own axial direction to buffer the second force component, so as to protect the top of the clamping cavity. The second upper elastic member can be deformed along its own axial direction to buffer the first force component that will act on the side wall of the clamping cavity, so as to protect the side wall of the clamping cavity. The first lower elastic member can be deformed along its own axial direction to buffer the fourth force component, so as to protect the bottom of the clamping cavity. The second lower elastic member can deform along its own axial direction to buffer the third force component that will act on the side wall of the clamping cavity, so as to protect the side wall of the clamping cavity. Moreover, when the upper guide groove / lower guide groove is subjected to excessive force, the first upper elastic member / first lower elastic member can break before the top / bottom of the clamping cavity is damaged, thereby avoiding damage to the clamping cavity. Overall, the service life of the clamping seat can be greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a partial cross-sectional view of a broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines according to the present invention along a first cross-sectional plane;

[0051] Figure 2 yes Figure 1 A partial cross-sectional view of a broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines along a second cross-sectional plane is shown;

[0052] Figure 3 yes Figure 1 A partial enlarged view of the middle A area;

[0053] Figure 4 yes Figure 1 A partial enlarged view of area B in the middle.

[0054] In the accompanying drawings, 110, clamping seat; 111, middle base; 112, upper base; 113, lower base; 121, upper guide groove; 1211, upper slide rail; 122, lower guide groove; 1221, lower slide rail; 131, upper jaw; 132, lower jaw; 141, first upper elastic member; 1411, upper threaded sleeve; 1412, upper bolt; 14121, upper nut; 1413, upper disc spring; 1414, upper slotted nut; 1415, upper cotter pin; 142, first lower elastic member; 1421 , lower threaded sleeve; 1422, lower bolt; 14221, lower nut; 1423, lower disc spring; 1424, lower slotted nut; 1425, lower cotter pin; 151, second upper elastic member; 152, second lower elastic member; 161, upper driving cylinder; 162, lower driving cylinder; 171, upper traction rope; 172, lower traction rope; 181, synchronous hydraulic cylinder; 182, synchronous frame; 183, upper clamping hydraulic cylinder; 184, upper push rod; 185, lower clamping hydraulic cylinder; 186, lower push rod. DETAILED DESCRIPTION

[0055] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] It should be noted that the first cross section and the second cross section are parallel to each other.

[0057] As described in the background art, when the plate is broken, the clamp seat may be damaged. The maintenance of the clamp seat is time-consuming and expensive. Therefore, how to extend the service life of the clamp seat has become a technical problem that needs to be solved urgently by those skilled in the art.

[0058] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention provides a broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines, including a clamping seat 110, an upper guide groove 121, an upper jaw 131, a lower guide groove 122 and a lower jaw 132. The clamping seat 110 forms a clamping cavity. The upper guide groove 121 is installed on the top of the clamping cavity through a plurality of first upper elastic members 141. The upper jaw 131 is slidably installed on the bottom of the upper guide groove 121, and one or more second upper elastic members 151 that can abut against the side wall of the clamping cavity are penetrated inside. The lower guide groove 122 is installed on the bottom of the clamping cavity through a plurality of first lower elastic members 142. The lower jaw 132 is slidably installed on the top of the lower guide groove 122, and one or more second lower elastic members 152 that can abut against the side wall of the clamping cavity are penetrated inside. Figure 1As shown, when the sheet material breaks, the upper jaw 131 is subjected to an impact force F1 to the right, which can be decomposed into a first component force F2 directed obliquely upward and a second component force F3 directed obliquely downward. The lower jaw 132 is subjected to an impact force F4 to the right, which can be decomposed into a third component force F5 directed obliquely downward and a fourth component force F6 directed obliquely upward. The second component force F3 directed obliquely downward is first transmitted from the upper jaw 131 to the upper guide groove 121, and the upper guide groove 121 is transmitted to the top of the clamping cavity through the first upper elastic member 141. In this process, the first upper elastic member 141 can be deformed along its own axial direction to buffer the second component force F3, so as to protect the top of the clamping cavity. The second upper elastic member 151 can be deformed along its own axial direction to buffer the first component force F2 that is about to act on the side wall of the clamping cavity, so as to protect the side wall of the clamping cavity. The fourth force component F6 which is obliquely upward is first transmitted from the lower jaw 132 to the lower guide groove 122, and the lower guide groove 122 is transmitted to the bottom of the clamping cavity through the first lower elastic member 142. In this process, the first lower elastic member 142 can be deformed along its own axial direction to buffer the fourth force component F6, so as to protect the bottom of the clamping cavity. The second lower elastic member 152 can be deformed along its own axial direction to buffer the third force component F5 which is about to act on the side wall of the clamping cavity, so as to protect the side wall of the clamping cavity. Moreover, when the upper guide groove 121 / lower guide groove 122 is subjected to excessive force, the first upper elastic member 141 / first lower elastic member 142 can break before the top / bottom of the clamping cavity is damaged, thereby avoiding damage to the clamping cavity. Overall, the service life of the clamping seat 110 can be greatly extended, the equipment maintenance and repair costs can be reduced, and the operation rhythm can be guaranteed.

[0059] Specifically, in the example, Figure 3 and Figure 4As shown, a plurality of upper threaded holes are formed on the top of the clamping cavity, and correspondingly, a plurality of upper threaded holes are also formed on the upper guide groove 121. A plurality of first upper elastic members 141 correspond to the plurality of upper threaded holes one by one. Each first upper elastic member 141 includes an upper threaded sleeve 1411, an upper bolt 1412, an upper disc spring 1413, an upper slotted nut 1414 and an upper cotter pin 1415. The upper threaded sleeve 1411 is screwed into an upper threaded hole in the clamping cavity. The upper bolt 1412 is screwed into an upper threaded hole in the upper guide groove 121 and into the upper threaded sleeve 1411, and an upper nut 14121 is provided at the top. The upper disc spring 1413 is sleeved on the upper bolt 1412, and the top end abuts against the upper nut 14121, and the bottom end abuts against the upper threaded sleeve 1411. The upper disc spring 1413 can buffer the second component force F3. Since the outer diameter of the upper threaded sleeve 1411 is larger than the diameter of the cross section of the upper bolt 1412, when the force is too large, the upper bolt 1412 is more likely to break relative to the upper threaded sleeve 1411, thereby preventing the top of the clamping cavity from being damaged. The upper slotted nut 1414 is screwed to the bottom end of the upper bolt 1412. The upper cotter pin 1415 is installed on the upper slotted nut 1414. The upper cotter pin 1415 cooperates with the upper slotted nut 1414 to prevent the first upper elastic member 141 from rotating around its own axis. A plurality of lower threaded holes are formed at the bottom of the clamping cavity, and correspondingly, a plurality of lower threaded holes are also formed on the lower guide groove 122. The plurality of first lower elastic members 142 correspond to the plurality of lower threaded holes one by one. Each first lower elastic member 142 includes a lower threaded sleeve 1421, a lower bolt 1422, a lower disc spring 1423, a lower slotted nut 1424 and a lower cotter pin 1425. The lower threaded sleeve 1421 is screwed into a lower threaded hole of the clamping cavity. The lower bolt 1422 is screwed into a lower threaded hole of the lower guide groove 122 and the lower threaded sleeve 1421, and a lower nut 14221 is provided at the bottom end. The lower disc spring 1423 is sleeved on the lower bolt 1422, and the bottom end abuts against the lower nut 14221, and the top end abuts against the lower threaded sleeve 1421. The lower disc spring 1423 can buffer the fourth component force F6. Since the outer diameter of the lower threaded sleeve 1421 is larger than the diameter of the cross section of the lower bolt 1422, when the force is too large, the lower bolt 1422 is more likely to break relative to the lower threaded sleeve 1421, thereby preventing the bottom of the clamping cavity from being damaged. The lower slotted nut 1424 is screwed to the top end of the lower bolt 1422. The lower cotter pin 1425 is installed on the lower slotted nut 1424. The lower cotter pin 1425 cooperates with the lower slotted nut 1424 to prevent the first lower elastic member 142 from rotating around its own axis.

[0060] Preferably, the second upper elastic member 151 and the second lower elastic member 152 are elastic damping body buffers. Compared with other buffers, under the same stroke and capacity, the elastic damping body buffer has the advantages of large deformation, small reaction force, high energy absorption rate and fast response speed. Moreover, the elastic damping body buffer is small in size, light in weight, compact in structure, easy to install, does not require daily maintenance, and can adapt to various harsh working conditions.

[0061] Preferably, there are two second upper elastic members 151 disposed in parallel, and there are two second lower elastic members 152 disposed in parallel.

[0062] Specifically, in the example, Figure 2 As shown, an upper slide rail 1211 is provided at the bottom of the upper guide groove 121. An upper slide groove adapted to the upper slide rail 1211 is provided at the top of the upper jaw 131. The upper slide groove and the upper slide rail 1211 cooperate to effectively improve the smoothness of movement of the upper jaw 131 when the belt is broken. A lower slide rail 1221 is provided at the top of the lower guide groove 122. A lower slide groove adapted to the lower slide rail 1221 is provided at the bottom of the lower jaw 132. The lower slide groove and the lower slide rail 1221 cooperate to effectively improve the smoothness of movement of the lower jaw 132 when the belt is broken.

[0063] Specifically, in the example, Figure 2 As shown, the clamping seat 110 includes a middle base 111, an upper base 112 and a lower base 113. The upper base 112 is fixedly mounted on the upper part of one side of the middle base 111. The lower base 113 is fixedly mounted on the lower part of one side of the middle base 111. A clamping cavity is formed between the lower base 113 and the upper base 112.

[0064] Specifically, in the example, Figure 1 or Figure 2As shown, the upper portion of the clamp seat 110 is formed with an upper rope threading hole, the lower portion is formed with a lower rope threading hole, and the middle portion is provided with an upper clearance hole and a lower clearance hole. The broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines also includes an upper driving cylinder 161, an upper traction rope 171, a lower driving cylinder 162, a lower traction rope 172, a synchronous hydraulic cylinder 181, a synchronous frame 182, an upper clamping hydraulic cylinder 183, an upper push rod 184, a lower clamping hydraulic cylinder 185 and a lower push rod 186. The axis of the upper driving cylinder 161 is tilted. One end of the upper traction rope 171 is connected to the output shaft of the upper driving cylinder 161, and the other end is connected to the upper jaw 131 after passing through the upper rope threading hole. The upper driving cylinder 161 provides traction for the upper jaw 131 through the upper traction rope 171. The axis of the lower driving cylinder 162 is tilted. One end of the lower traction rope 172 is connected to the output shaft of the lower driving oil cylinder 162, and the other end is connected to the lower jaw 132 after passing through the lower rope hole. The lower driving oil cylinder 162 provides traction for the lower jaw 132 through the lower traction rope 172. The output shaft of the synchronous hydraulic cylinder 181 faces the clamp seat 110. The synchronous frame 182 is fixedly mounted on the output shaft of the synchronous hydraulic cylinder 181 and can move toward or away from the clamp seat 110. The upper clamping hydraulic cylinder 183 is mounted on the upper part of the synchronous frame 182 and can move toward or away from the clamp seat 110 with the synchronous frame 182. One end of the upper push rod 184 is fixedly connected to the output shaft of the upper clamping hydraulic cylinder 183, and the other end can abut against the upper jaw 131 after passing through the upper clearance hole. The lower clamping hydraulic cylinder 185 is mounted on the lower part of the synchronous frame 182 and can move toward or away from the clamp seat 110 with the synchronous frame 182. One end of the lower push rod 186 is fixedly connected to the output shaft of the lower clamping hydraulic cylinder 185 , and the other end thereof can abut against the lower jaw 132 after passing through the lower clearance hole.

[0065] The working process and principle of the broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines are as follows:

[0066] First, the synchronous hydraulic cylinder 181 drives the synchronous frame 182 to move toward the clamping seat 110, so as to drive the upper clamping hydraulic cylinder 183 and the lower clamping hydraulic cylinder 185 to move toward the clamping seat 110, thereby driving the upper push rod 184 to move toward the upper jaw 131, and driving the lower push rod 186 to move toward the lower jaw 132. Next, the upper clamping hydraulic cylinder 183 drives the upper push rod 184 to move leftward to push the upper jaw 131 to move leftward. The lower clamping hydraulic cylinder 185 drives the lower push rod 186 to move leftward to push the lower jaw 132 to move leftward. The upper jaw 131 cooperates with the lower jaw 132 to clamp the plate. Afterwards, the upper clamping hydraulic cylinder 183 drives the upper push rod 184 to move rightward to disengage the upper push rod 184 from the upper jaw 131. The lower clamping hydraulic cylinder 185 drives the lower push rod 186 to move rightward so that the lower push rod 186 is separated from the lower jaw 132. When the sheet material is broken, the first upper elastic member 141 can be deformed along its own axial direction to buffer the second force component F3, so as to protect the top of the clamping cavity. The second upper elastic member 151 can be deformed along its own axial direction to buffer the first force component F2 that will act on the side wall of the clamping cavity, so as to protect the side wall of the clamping cavity. The first lower elastic member 142 can be deformed along its own axial direction to buffer the fourth force component F6, so as to protect the bottom of the clamping cavity. The second lower elastic member 152 can be deformed along its own axial direction to buffer the third force component F5 that will act on the side wall of the clamping cavity, so as to protect the side wall of the clamping cavity. When the upper guide groove 121 / lower guide groove 122 is subjected to excessive force, the first upper elastic member 141 / first lower elastic member 142 can break before the top / bottom of the clamping cavity is damaged, thereby preventing the clamping cavity from being damaged. Overall, the service life of the clamping seat 110 can be greatly extended, the equipment maintenance cost can be reduced, and the operation rhythm can be guaranteed.

[0067] Preferably, the upper traction rope 171 and the lower traction rope 172 are steel wire ropes with relatively high strength.

[0068] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines, characterized in that: include: A clamping seat, formed with a clamping cavity; An upper guide groove, mounted on the top of the clamping cavity through a plurality of first upper elastic members; An upper jaw is slidably mounted on the bottom of the upper guide groove, and is provided with one or more second upper elastic members capable of abutting against the side wall of the clamping cavity; A lower guide groove, mounted on the bottom of the clamping cavity through a plurality of first lower elastic members; A lower jaw is slidably mounted on the top of the lower guide groove, and is provided with one or more second lower elastic members capable of abutting against the side wall of the clamping cavity; A plurality of upper threaded holes are formed on the top of the clamping cavity, and correspondingly, a plurality of upper threaded holes are also formed on the upper guide groove; Each of the first upper elastic members comprises: An upper threaded sleeve, threadedly connected to one of the upper threaded holes in the clamping cavity; An upper bolt is screwed into one of the upper threaded holes of the upper guide groove and the upper threaded sleeve, and an upper nut is arranged on the top; the outer diameter of the upper threaded sleeve is larger than the diameter of the cross section of the upper bolt; An upper disc spring is sleeved on the upper bolt, with a top end abutting against the upper nut and a bottom end abutting against the upper threaded sleeve; The bottom of the clamping cavity is formed with a plurality of lower threaded holes, and correspondingly, the lower guide groove is also formed with a plurality of lower threaded holes; Each of the first lower elastic members comprises: A lower threaded sleeve, threadedly connected to one of the lower threaded holes in the clamping cavity; A lower bolt is screwed into one of the lower threaded holes of the lower guide groove and the lower threaded sleeve, and a lower nut is arranged at the bottom end; the outer diameter of the lower threaded sleeve is larger than the diameter of the cross section of the lower bolt; A lower disc spring is sleeved on the lower bolt, with a bottom end abutting against the lower nut and a top end abutting against the lower threaded sleeve; Each of the first upper elastic members further comprises: An upper slotted nut, threadedly connected to the bottom end of the upper bolt; An upper cotter pin is mounted on the upper slotted nut; the upper cotter pin and the upper slotted nut can prevent the first upper elastic member from rotating around its own axis; Each of the first lower elastic members further comprises: A lower slotted nut, threadedly connected to the top end of the lower bolt; A lower cotter pin is mounted on the lower slotted nut; the lower cotter pin and the lower slotted nut can prevent the first lower elastic member from rotating around its own axis.

2. The broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines according to claim 1 is characterized in that: The second upper elastic member and the second lower elastic member are elastic damping body buffers.

3. The broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines according to claim 1 is characterized in that: An upper slide rail is provided at the bottom of the upper guide groove; The top of the upper jaw is provided with an upper slide groove adapted to the upper slide rail; A lower sliding rail is provided on the top of the lower guide groove; A lower slide groove matched with the lower slide rail is arranged at the bottom of the lower jaw.

4. The broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines according to claim 1 is characterized in that: The clamping seat comprises: Middle matrix; An upper base body, mounted on an upper portion of one side of the middle base body; The lower base is installed at the lower part of one side of the middle base; the clamping cavity is formed between the lower base and the upper base.

5. The broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines according to claim 1 is characterized in that: The upper portion of the clamp seat is formed with an upper rope threading hole, and the lower portion is formed with a lower rope threading hole; Also includes: The upper drive cylinder has an inclined axis; An upper traction rope, one end of which is connected to the output shaft of the upper driving cylinder, and the other end of which passes through the upper rope threading hole and is connected to the upper jaw; The lower driving cylinder has an inclined axis; A lower traction rope has one end connected to the output shaft of the lower driving oil cylinder, and the other end is connected to the lower jaw after passing through the lower rope hole.

6. The broken belt buffer clamping mechanism suitable for small and medium-sized stretching machines according to claim 1 is characterized in that: An upper clearance hole and a lower clearance hole are provided in the middle of the clamp seat; Also includes: A synchronous hydraulic cylinder, the output shaft of which faces the clamping seat; A synchronous frame, mounted on the output shaft of the synchronous hydraulic cylinder, capable of moving toward or away from the clamping seat; An upper clamping hydraulic cylinder is installed on the upper part of the synchronous frame and can move toward or away from the clamping seat along with the synchronous frame; An upper push rod, one end of which is fixedly connected to the output shaft of the upper clamping hydraulic cylinder, and the other end of which is able to abut against the upper jaw after passing through the upper clearance hole; A lower clamping hydraulic cylinder is installed at the lower part of the synchronous frame and can move toward or away from the clamping seat along with the synchronous frame; A lower push rod has one end fixedly connected to the output shaft of the lower clamping hydraulic cylinder, and the other end can abut against the lower jaw after passing through the lower clearance hole.

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