CN212424811U - Reel positioning device of roll paper production line - Google Patents

Abstract

The utility model discloses a reel positioning device of a roll paper production line, in particular to the technical field of the roll paper production line, which comprises a motor, a fixed plate, a baffle plate, a rotating rod, a rotating block, a rotating shaft, a first limiting mechanism, a second limiting mechanism, a first supporting mechanism and a second supporting mechanism, wherein the top of the fixed plate is fixedly provided with the motor, one end of the motor is fixedly provided with the rotating rod, one end of the rotating rod is connected with the baffle plate, the rotating rod extends out of the fixed end to be fixedly connected with the rotating block, when the reel is inserted into the rotating shaft, the reel can not sway left and right through the limiting action of the first limiting mechanism and the second limiting mechanism, thereby fixing the position of the reel, leading the reel to be stably arranged on the device, leading to be better reeled with, the production cost is saved, and the production efficiency is enhanced.

Description

Reel positioning device of roll paper production line

Technical Field

The utility model relates to a roll web production line field, concretely relates to reel positioner of roll web production line.

Background

The roll paper is widely used as a common daily product in people's daily life, the width of the roll paper of China is 1575mm, 1092mm, 880mm, 787mm and the like, the roll paper is required to be consistent in tightness, neat in edge cutting, flat in joint and provided with a conspicuous mark for various industries such as rotary printing, automatic packaging and the like.

The prior art has the following defects: the perfect fit between the paper and the winding drum can not be guaranteed in the existing roll paper production, and the paper cannot be well guaranteed to be in orderly rotary connection with the winding drum due to the fact that a production line is not provided with a positioning device of the winding drum, so that finished products cannot be used in the market, secondary production has to be carried out, waste of the paper is caused, the production difficulty and the production cost are increased, the production efficiency is reduced, and the roll paper production line is simple in structure and beneficial to production.

Therefore, it is necessary to develop a roll positioning device for a web production line.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a reel positioner of roll web production line, through when the reel inserts the axis of rotation, through the use of button one and button two, spring one, spring two, spring three, spring four begins to externally stretch out, play the supporting role to the reel inside the reel, make the reel can not rock from top to bottom, through the limiting displacement of stop gear one and stop gear two, rock about making the reel can not going on, in order to solve the unable stable fixation of reel, thereby extravagant paper, increase the production degree of difficulty, increase manufacturing cost's problem.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a reel positioning device of a roll paper production line comprises a motor, a fixing plate, a baffle, a rotating rod, a rotating block, a rotating shaft, a first limiting mechanism, a second limiting mechanism, a first supporting mechanism and a second supporting mechanism.

Preferably, the fixed motor that is equipped with in fixed plate top, the fixed dwang that is equipped with of motor one end, dwang one end connection baffle, the dwang extends the baffle, dwang extension end fixed connection turning block, the fixed stop gear that is equipped with of turning block one end, a stop gear other end fixed connection axis of rotation, the fixed stop gear two that is equipped with in axis of rotation other end, the inside fixed supporting mechanism one and the supporting mechanism two that are equipped with of axis of rotation, the axis of rotation is all extended at supporting mechanism one and supporting mechanism two both ends, supporting mechanism one and supporting mechanism two include spring one, spring two, spring three, spring four, spring one-end fixed connection draw-in groove piece one, spring two one end fixed connection draw-in groove piece two.

Preferably, the first supporting mechanism and the first supporting mechanism comprise a first supporting block, a second supporting block, a third supporting block and a fourth supporting block, one end of the first supporting block is fixedly connected with the first clamping groove block, and one end of the second supporting block is fixedly connected with the second clamping groove block.

Preferably, the first support mechanism comprises a first support tube, a first clamping groove block, a second clamping groove block, a first small spring, a second small spring, a first Z-shaped rod, a second Z-shaped rod, a first fixed rod, a second fixed rod and a first button, one end of the inner part of the supporting tube is provided with a first clamping groove block, one end of the first clamping groove block can extend out of the outer part of the supporting tube, the other end of the clamping groove block is fixedly connected with a first small spring, one end of the first small spring is fixedly connected with a first fixing rod, the top end of the first fixed rod is connected with the first Z-shaped rod in a sliding way, one end of the first Z-shaped rod is inserted into the first clamping groove block, the other end of the inner part of the supporting tube is provided with a second clamping groove block, one end of the second clamping groove block can extend out of the supporting tube, the other end of the second clamping groove block is fixedly connected with a second small spring, one end of the second small spring is fixedly connected with a second fixing rod, the top end of the second fixed rod is connected with a second Z-shaped rod in a sliding mode, and one end of the second Z-shaped rod is inserted into the second clamping groove block.

Preferably, the second supporting mechanism comprises a second supporting tube, a third clamping groove block, a fourth clamping groove block, a third small spring, a fourth small spring, a third Z-shaped rod, a fourth Z-shaped rod, a third fixed rod, a fourth fixed rod and a second button, one end of the inner part of the second supporting tube is provided with a third clamping groove block, one end of the third clamping groove block can extend out of the second supporting tube, the other end of the three clamping groove blocks is fixedly connected with a third small spring, one end of the third small spring is fixedly connected with a third fixed rod, the top end of the third fixed rod is connected with a third Z-shaped rod in a sliding way, one end of the third Z-shaped rod is inserted into the third clamping groove block, the other end of the inner part of the second supporting tube is provided with a fourth clamping groove block, one end of the fourth clamping groove block can extend out of the outer part of the second supporting tube, the other end of the four clamping groove blocks is fixedly connected with a small spring four, one end of the small spring four is fixedly connected with a fixed rod four, the four top ends of the fixed rods are slidably connected with the four Z-shaped rods, and one ends of the four Z-shaped rods are inserted into the four clamping groove blocks.

Preferably, the first limiting mechanism comprises a first limiting plate, a first limiting block, a first limiting spring, a second limiting spring, a first triangular limiting block and a second triangular limiting block, the first limiting block is fixedly arranged on one side of the first limiting plate, the first limiting spring is fixedly arranged on one end of the first limiting block, the second limiting spring is fixedly arranged on the other end of the first limiting block, the first triangular limiting block is fixedly arranged at one end of the first limiting spring, and the second triangular limiting block is fixedly arranged at the end of the second limiting spring.

Preferably, the second limiting mechanism comprises a second limiting plate, a second limiting block, a third limiting spring, a fourth limiting spring, a third limiting block and a fourth triangular limiting block, the second limiting block is fixedly arranged on one side of the second limiting plate, the third limiting spring is fixedly arranged at one end of the second limiting block, the fourth limiting spring is fixedly arranged at the other end of the second limiting block, the third triangular limiting block is fixedly arranged at the three end of the third limiting spring, the fourth triangular limiting block is fixedly arranged at the four end of the fourth limiting spring, the first rotating shaft is arranged at one end of the second limiting plate, and the second rotating shaft is arranged at the other.

The embodiment of the utility model provides a have following advantage:

the utility model discloses an when the reel inserts the axis of rotation, through the use of button one and button two, spring one, spring two, spring three, spring four begins to externally stretch out, inside the reel play the supporting role, make the reel can not rock from top to bottom, limiting displacement through limiting mechanism one and limiting mechanism two, it rocks about making the reel can not go on, thereby the position of reel has been fixed, make the stable existence of reel on this device, thereby better be drawn into the paper, make the paper orderly be drawn into on the reel, thereby can not cause the waste of paper, the production cost is saved, and the production efficiency is strengthened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a cross-sectional view provided by the present invention;

FIG. 2 is a partial view of a limiting mechanism according to the present invention;

FIG. 3 is a partial view of a second limiting mechanism provided by the present invention;

FIG. 4 is a partial view of a support mechanism provided by the present invention;

FIG. 5 is a partial view of a second supporting mechanism provided by the present invention;

FIG. 6 is a cross-sectional view of the second embodiment of the present invention;

in the figure: 1 motor, 2 fixed plate, 3 baffle plate, 4 rotating rod, 5 rotating block, 6 rotating shaft, 7 limiting mechanism I, 71 limiting plate I, 72 limiting block I, 73 limiting spring I, 74 limiting spring II, 75 triangle limiting block I, 76 triangle limiting block II, 8 limiting mechanism II, 81 limiting plate II, 82 limiting block II, 83 limiting spring III, 84 limiting spring IV, 85 triangle limiting block III, 86 triangle limiting block IV, 9 supporting mechanism I, 91 spring I, 92 spring II, 93 supporting block I, 94 supporting block II, 95 supporting tube I, 96 clamping groove block I, 97 clamping groove block II, 98 small spring I, 99 small spring II, 10 supporting mechanism II, 101 spring III, 102 spring IV, 103 supporting block III, 104 supporting block IV, 105Z-shaped rod I, 106Z-shaped rod II, 107 fixed rod I, 108 fixed rod II, 109 button I, 110 supporting tube II, 111 clamping groove block III, 112, a fourth clamping groove block, 113, a third small spring, 114, a fourth small spring, 115, a third Z-shaped rod, 116, a fourth Z-shaped rod, 117, a third fixing rod, 118, a fourth fixing rod and 119, and a second button.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to the attached fig. 1-5 of the specification, the roll positioning device of the roll paper production line of the embodiment includes a motor 1, a fixing plate 2, a baffle 3, a rotating rod 4, a rotating block 5, a rotating shaft 6, a first limiting mechanism 7, a second limiting mechanism 8, a first supporting mechanism 9 and a second supporting mechanism 10;

further, a motor 1 is fixedly arranged at the top of the fixed plate 2, a rotating rod 4 is fixedly arranged at one end of the motor 1, one end of the rotating rod 4 is connected with a baffle 3, the rotating rod 4 extends out of the baffle 3, a rotating block 5 is fixedly connected with the extending end of the rotating rod 4, one end of the rotating block 5 is fixedly arranged at one end of a first limiting mechanism 7, the other end of the first limiting mechanism 7 is fixedly connected with a rotating shaft 6, the other end of the rotating shaft 6 is fixedly arranged with a second limiting mechanism 8, a first supporting mechanism 9 and a second supporting mechanism 10 are fixedly arranged in the rotating shaft 6, two ends of the first supporting mechanism 9 and the second supporting mechanism 10 both extend out of the rotating shaft 6, the first supporting mechanism 9 and the second supporting mechanism 10 comprise a first spring 91, a second spring 92, a third spring 101 and a fourth spring 102, specifically, the fixed plate 2, the rotating rod 4 plays a role in connection and driving rotation, the rotating shaft 6 plays a role in driving the winding drum to rotate, the first limiting mechanism 7 and the second limiting mechanism 8 play a role in limiting the winding drum to shake left and right, the first supporting mechanism 9 and the second supporting mechanism 10 play a role in limiting the winding drum to shake up and down, and the first spring 91, the second spring 92, the third spring 101 and the fourth spring 102 play a role in stably reinforcing the winding drum;

further, the first support mechanism 9 includes a first support tube 95, a first notch block 96, a second notch block 97, a first small spring 98, a second small spring 99, a first Z-shaped rod 105, a second Z-shaped rod 106, a first fixing rod 107, a second fixing rod 108, and a first button 109, the first notch block 96 is disposed at one end inside the first support tube 95, one end of the first notch block 96 can extend out of the first support tube 95, the other end of the first notch block 96 is fixedly connected with the first small spring 98, one end of the first small spring 98 is fixedly connected with the first fixing rod 107, the top end of the first fixing rod 107 is slidably connected with the first Z-shaped rod 105, one end of the first Z-shaped rod 105 is inserted into the first notch block 96, the other end inside the first support tube 95 is disposed with the second notch block 97, one end of the second notch block 97 can extend out of the first support tube 95, the other end of the second notch block 97 is fixedly connected with the second small spring 99, one end of the, the top end of the second fixing rod 108 is slidably connected with the second Z-shaped rod 106, one end of the second Z-shaped rod 106 is inserted into the second clamping groove block 97, specifically, the first supporting tube 95 plays a supporting role, the first small spring 98 and the second small spring 99 play a telescopic role, and the first fixing rod 107 and the second fixing rod 108 play a fixing role;

further, the second support mechanism 10 includes a second support tube 110, a third slot block 111, a fourth slot block 112, a third small spring 113, a fourth small spring 114, a third Z-shaped rod 115, a fourth Z-shaped rod 116, a third fixed rod 117, a fourth fixed rod 118, and a second button 119, the third slot block 111 is disposed at one end inside the second support tube 110, one end of the third slot block 111 can extend out of the second support tube 110, the other end of the third slot block 111 is fixedly connected with the third small spring 113, one end of the third small spring 113 is fixedly connected with the third fixed rod 117, the top end of the third fixed rod 117 is slidably connected with the third Z-shaped rod 115, one end of the third Z-shaped rod 115 is inserted into the third slot block 111, the other end inside the second support tube 110 is disposed with the fourth slot block 112, one end of the fourth slot block 112 can extend out of the second support tube 110, the other end of the fourth slot block 112 is fixedly connected with the fourth small spring 114, and one end of the, the top end of the fourth fixing rod 118 is slidably connected with a fourth Z-shaped rod 116, one end of the fourth Z-shaped rod 116 is inserted into the fourth clamping groove block 112, specifically, the second supporting tube 110 plays a supporting role, the third small spring 113 and the fourth small spring 114 play a telescopic role, and the third fixing rod 117 and the fourth fixing rod 118 play a fixing role;

further, the first limiting mechanism 7 comprises a first limiting plate 71, a first limiting block 72, a first limiting spring 73, a second limiting spring 74, a first triangular limiting block 75 and a second triangular limiting block 76, the first limiting block 72 is fixedly arranged on one side of the first limiting plate 71, the first limiting spring 73 is fixedly arranged at one end of the first limiting block 72, the second limiting spring 74 is fixedly arranged at the other end of the first limiting block 72, the first triangular limiting block 75 is fixedly arranged at the end of the first limiting spring 73, the second triangular limiting block 76 is fixedly arranged at the end of the second limiting spring 74, specifically, the first limiting plate 71 and the first limiting block 72 play a role in limiting and fixing, and the first limiting spring 73 and the second limiting spring 74 play a role in extending the first triangular limiting block 75 and the second triangular limiting block 76;

further, the second limiting mechanism 8 comprises a second limiting plate 81, a second limiting block 82, a third limiting spring 83, a fourth limiting spring 84, a third triangular limiting block 85 and a fourth triangular limiting block 86, the second limiting block 82 is fixedly arranged on one side of the second limiting plate 81, the third limiting spring 83 is fixedly arranged at one end of the second limiting block 82, the fourth limiting spring 84 is fixedly arranged at the other end of the second limiting block 82, the third triangular limiting block 85 is fixedly arranged at the end of the third limiting spring 83, the fourth triangular limiting block 86 is fixedly arranged at the end of the fourth limiting spring 84, a first rotating shaft 87 is arranged at one end of the second limiting block 81, a second rotating shaft 88 is arranged at the other end of the second limiting plate 81, the second limiting plate 81 and the second limiting block 82 play roles in limiting and fixing, and the third limiting spring 83 and the fourth limiting spring 84 play roles in extending and retracting the, the first rotating shaft 87 and the second rotating shaft 88 play a role of rotatable adjustment.

The implementation scenario is specifically as follows: use the utility model discloses the regulation of the first 87 of rotation axis and the second 88 of rotation axis on the time through the two 81 limiting plates, make the reel embolia, use through a 109 and a 119 button, make the connection of Z shape pole and draw-in groove piece bounce, thereby stretch out a 91 spring, a 92 spring, a 101 spring, a 102 spring supports the reel inboardly, and the spring can not be because of flexible damage reel too fast, make it can not rock from top to bottom, rethread a 7 and a two 8 stop gear's use, make the reel can not rock about can, and the scalable regulation of spacing spring on a 7 stop gear and the stop gear two 8, can carry out limiting displacement to the reel of different models, with this device can effectual saving paper, increase production efficiency, practice thrift manufacturing cost, and simple structure, do benefit to production.

Example 2:

referring to fig. 1-5 of the specification, the reel positioning device of the roll paper production line of the embodiment is different from the embodiment 1 in that the first supporting mechanism 9 and the second supporting mechanism 10 comprise a first supporting block 93, a second supporting block 94, a third supporting block 103 and a fourth supporting block 104;

further, a motor 1 is fixedly arranged at the top of the fixed plate 2, a rotating rod 4 is fixedly arranged at one end of the motor 1, one end of the rotating rod 4 is connected with the baffle 3, the rotating rod 4 extends out of the baffle 3, an extending end of the rotating rod 4 is fixedly connected with a rotating block 5, one end of the rotating block 5 is fixedly arranged with one end of a limiting mechanism I7, the other end of the limiting mechanism I7 is fixedly connected with a rotating shaft 6, the other end of the rotating shaft 6 is fixedly arranged with a limiting mechanism II 8, a supporting mechanism I9 and a supporting mechanism II 10 are fixedly arranged in the rotating shaft 6, two ends of the supporting mechanism I9 and the supporting mechanism II 10 both extend out of the rotating shaft 6, the supporting mechanism I9 and the supporting mechanism II 10 comprise a supporting block 93, a supporting block II 94, a supporting block III 103 and a supporting block IV 104, specifically, the, the dwang 4 plays and connects, drives rotatory effect, and axis of rotation 6 plays and drives the rotatory effect of reel, and stop gear 7 and stop gear two 8 play the effect of rocking about the restriction reel, and supporting mechanism 9 and supporting mechanism two 10 play the effect of rocking about the restriction reel, and supporting shoe 93, supporting shoe two 94, supporting shoe three 103, supporting shoe four 104 play and stabilize the reinforced effect to the reel.

The implementation scenario is specifically as follows: when the utility model is used, the reel is sleeved by adjusting the first rotating shaft 87 and the second rotating shaft 88 on the second limit plate 81, through the use of the first button 109 and the second button 119, the connection between the Z-shaped rod and the slot block is bounced off, thereby extending the first support block 93, the second support block 94, the third support block 103 and the fourth support block 104 to support the inner side of the winding drum, and the supporting of the first supporting block 93, the second supporting block 94, the third supporting block 103 and the fourth supporting block 104 to the reel is more stable, no slight up-and-down shaking is caused, the reel can not shake left and right through the use of the first limiting mechanism 7 and the second limiting mechanism 8, and the limiting springs on the first limiting mechanism 7 and the second limiting mechanism 8 can be telescopically adjusted, can carry out limiting displacement to the reel of different models, with this device can effectual saving paper, increase production efficiency, practice thrift manufacturing cost, and simple structure does benefit to production.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (6)

1. The utility model provides a reel positioner of roll web production line, includes motor (1), fixed plate (2), baffle (3), dwang (4), turning block (5), axis of rotation (6), stop gear one (7), stop gear two (8), supporting mechanism one (9), supporting mechanism two (10), its characterized in that: fixed plate (2) top is fixed and is equipped with motor (1), fixed dwang (4) that is equipped with of motor (1) one end, dwang (4) one end connection baffle (3), dwang (4) extend end fixed connection turning block (5), turning block (5) one end is fixed and is equipped with stop gear one (7), stop gear one (7) other end fixed connection axis of rotation (6), axis of rotation (6) other end fixed is equipped with stop gear two (8), axis of rotation (6) inside fixed be equipped with supporting mechanism one (9) and supporting mechanism two (10), supporting mechanism one (9) and supporting mechanism two (10) both ends all extend axis of rotation (6), supporting mechanism one (9) and supporting mechanism two (10) include spring one (91) The spring comprises a second spring (92), a third spring (101) and a fourth spring (102), one end of the first spring (91) is fixedly connected with the first clamping groove block (96), and one end of the second spring (92) is fixedly connected with the second clamping groove block (97).

2. The roll positioning device for a web production line as recited in claim 1, wherein: the first supporting mechanism (9) and the second supporting mechanism (10) comprise a first supporting block (93), a second supporting block (94), a third supporting block (103) and a fourth supporting block (104), one end of the first supporting block (93) is fixedly connected with a first clamping groove block (96), and one end of the second supporting block (94) is fixedly connected with a second clamping groove block (97).

3. The roll positioning device for a web production line as recited in claim 1, wherein: the supporting mechanism I (9) comprises a supporting tube I (95), a clamping groove block I (96), a clamping groove block II (97), a small spring I (98), a small spring II (99), a Z-shaped rod I (105), a Z-shaped rod II (106), a fixing rod I (107), a fixing rod II (108) and a button I (109), wherein the clamping groove block I (96) is arranged at one end inside the supporting tube I (95), one end of the clamping groove block I (96) can extend out of the supporting tube I (95), the small spring I (98) is fixedly connected at the other end of the clamping groove block I (96), one end of the small spring I (98) is fixedly connected with the fixing rod I (107), the top end of the fixing rod I (107) is slidably connected with the Z-shaped rod I (105), one end of the Z-shaped rod I (105) is inserted into the clamping groove block I (96), the clamping groove block II (97) is arranged at the other end inside the supporting tube I (95), and one end of the clamping groove block II (, the other end of the second clamping groove block (97) is fixedly connected with a second small spring (99), one end of the second small spring (99) is fixedly connected with a second fixing rod (108), the top end of the second fixing rod (108) is connected with a second Z-shaped rod (106) in a sliding mode, and one end of the second Z-shaped rod (106) is inserted into the second clamping groove block (97).

4. The roll positioning device for a web production line as recited in claim 1, wherein: the supporting mechanism II (10) comprises a supporting tube II (110), a clamping groove block III (111), a clamping groove block IV (112), a small spring III (113), a small spring IV (114), a Z-shaped rod III (115), a Z-shaped rod IV (116), a fixing rod III (117), a fixing rod IV (118) and a button II (119), wherein the clamping groove block III (111) is arranged at one end inside the supporting tube II (110), one end of the clamping groove block III (111) can extend out of the supporting tube II (110), the small spring III (113) is fixedly connected at the other end of the clamping groove block III (111), one end of the small spring III (113) is fixedly connected with the fixing rod III (117), the top end of the fixing rod III (117) is slidably connected with the Z-shaped rod III (115), one end of the Z-shaped rod III (115) is inserted into the clamping groove block III (111), the clamping groove block IV (112) is arranged at the other end inside the supporting tube II (110), and one end of the clamping groove block IV (, the other end of the four clamping groove blocks (112) is fixedly connected with a four small spring (114), one end of the four small spring (114) is fixedly connected with a four fixed rod (118), the top end of the four fixed rod (118) is connected with a four Z-shaped rod (116) in a sliding mode, and one end of the four Z-shaped rod (116) is inserted into the four clamping groove blocks (112).

5. The roll positioning device for a web production line as recited in claim 1, wherein: the first limiting mechanism (7) comprises a first limiting plate (71), a first limiting block (72), a first limiting spring (73), a second limiting spring (74), a first triangular limiting block (75) and a second triangular limiting block (76), the first limiting block (72) is fixedly arranged on one side of the first limiting plate (71), the first limiting spring (73) is fixedly arranged at one end of the first limiting block (72), the second limiting spring (74) is fixedly arranged at the other end of the first limiting block (72), the first triangular limiting block (75) is fixedly arranged at the end of the first limiting spring (73), and the second triangular limiting block (76) is fixedly arranged at the end of the second limiting spring (74).

6. The roll positioning device for a web production line as recited in claim 1, wherein: the second limiting mechanism (8) comprises a second limiting plate (81), a second limiting block (82), a third limiting spring (83), a fourth limiting spring (84), a third limiting block (85) and a fourth triangular limiting block (86), the second limiting plate (81) is fixed to one side of the second limiting plate (82), the third limiting spring (83) is fixed to one end of the second limiting block (82), the fourth limiting spring (84) is fixed to the other end of the second limiting block (82), the third triangular limiting block (85) is fixed to one end of the third limiting spring (83), the fourth triangular limiting block (86) is fixed to one end of the fourth limiting spring (84), the first rotating shaft (87) is arranged at one end of the second limiting plate (81), and the second rotating shaft (88) is arranged at the other end of the second limiting plate (.

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