Adjustable automatic sawing machine device for radiator

Abstract

The utility model discloses an adjustable automatic sawing machine device for a radiator, comprising a main body component, including a sawing machine body, a placing frame and a sawing knife, wherein the placing frame is arranged at one side of the sawing machine body, and the sawing knife is located in the sawing machine body; a pushing component is arranged on the sawing machine body, and comprises a pushing member and a protective member, wherein the pushing member is located at one side of the sawing knife, and the protective member is arranged on the pushing member. The utility model has the following beneficial effects: after cutting the steel plate of the radiator, the sawing knife will rise, and the steel plate after cutting can be pushed out by the rising of the sawing knife, and the steel plate does not need to be taken out manually, thereby preventing the risk of the operator being cut, and minimizing the chance of the operator directly contacting the sawing knife, thereby effectively avoiding the occurrence of dangerous situations such as being cut.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to an adjustable automatic sawing machine device for a radiator. Background Art

[0002] The automatic sawing machine device can realize automatic cutting of the radiator. The operator carefully places the radiator steel plate to be cut on the specific workbench of the automatic sawing machine to ensure its accurate and stable position to avoid shaking or shifting during the sawing process. The sawing knife will follow the precisely designed path and, under the command of the control system, approach the top of the steel plate in a stable and uniform manner so as to cut the steel plate. After the cutting is completed, the cut steel plate needs to be manually removed. The operator may accidentally touch the sawing knife when reaching out to take the steel plate due to negligence, etc., which may lead to the risk of hand cuts. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above problems and / or the problems existing in the existing adjustable automatic sawing machine device for radiators, the present utility model is proposed.

[0005] Therefore, the problem to be solved by the present invention is that after cutting is completed, the cut steel plate needs to be taken out manually. The operator may accidentally touch the saw blade when reaching out to take the steel plate due to negligence, etc., thereby causing the risk of cutting the hand.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an adjustable automatic sawing machine device for a radiator, comprising a main assembly, including a sawing machine body, a placing frame and a sawing knife, wherein the placing frame is arranged on one side of the sawing machine body, and the sawing knife is located in the sawing machine body;

[0007] The pushing component is arranged on the sawing machine body and comprises a pushing member and a protecting member. The pushing member is located at one side of the sawing blade, and the protecting member is arranged on the pushing member.

[0008] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the pushing member includes a moving plate and a push plate, the moving plate is arranged on one side of the sawing blade, and the push plate is fixed to one side of the moving plate.

[0009] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the pushing member also includes a first support shaft and a first torsion spring, the first support shaft is inserted into the bottom of the movable plate, the first support shaft is movably connected to the top of the sawing machine body, one end of the first torsion spring is fixed to the bottom of the movable plate, and the other end is fixed to the top of the sawing machine body.

[0010] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the pushing member further includes a first gear and a second gear, the first gear is fixed to the top of the movable plate, and the second gear is located on the top of the first gear.

[0011] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the pushing member also includes a spring and a positioning sleeve, the positioning sleeve is arranged on the outside of the second gear, the positioning sleeve and the second gear are movably connected, one end of the spring is fixed to the top of the second gear, and the other end is fixed to the bottom of the positioning sleeve.

[0012] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the pushing member also includes a rotating sleeve and a driving bar, the rotating sleeve is fixed to the top of the second gear, the driving bar is inserted into the top of the rotating sleeve, and the driving bar and the rotating sleeve are movably connected.

[0013] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the pushing member also includes a moving rod, a supporting sleeve and a driving block, the moving rod is fixed to the top of the driving bar, the supporting sleeve is sleeved on the outside of the moving rod, the supporting sleeve and the moving rod are movably connected, and the driving block is sleeved on the outside of the supporting sleeve.

[0014] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the protective member includes a protective door, a second support shaft and a second torsion spring, the protective door is arranged on one side of the sawing machine body, the second support shaft is inserted into the bottom of the protective door, the second support shaft is movably connected to the top of the sawing machine body, one end of the second torsion spring is fixed to the bottom of the protective door, and the other end is fixed to the top of the sawing machine body.

[0015] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the protective member also includes a driving plate, a driving rod and a protective shell, the driving plate is fixed to one side of the protective door, the driving rod is arranged on one side of the driving plate, and the protective shell is fixed to one side of the sawing machine body.

[0016] As a preferred solution of the adjustable automatic sawing machine device for the radiator of the utility model, the protective member also includes a positioning shaft and a movable rod, the positioning shaft is inserted into the bottom of the driving rod, the positioning shaft and the driving rod are movably connected, and the movable rod is fixed to one side of the movable plate.

[0017] The beneficial effects of the utility model are as follows: after cutting the radiator steel plate, the saw blade will rise, and the steel plate after cutting can be pushed out by the rising of the saw blade. There is no need to manually take out the steel plate, which prevents the operator from being cut. The chance of the operator directly contacting the saw blade is reduced to the greatest extent, thereby effectively avoiding the occurrence of dangerous situations such as being cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 The overall structure diagram of the adjustable automatic sawing machine device for radiators.

[0020] Figure 2 Structural diagram of a protective door for an adjustable automatic sawing machine device for a radiator.

[0021] Figure 3 Adjustable automatic sawing machine device for radiators Figure 2 A partial enlarged structural diagram in the middle.

[0022] Figure 4 Adjustable automatic sawing machine device for radiators Figure 2 A partial enlarged structural diagram of point B in the middle.

[0023] Figure 5 Figure 1. A diagram of a movable plate structure for an adjustable automatic sawing machine device for a radiator.

[0024] Figure 6 A cross-sectional view of a support sleeve for an adjustable automatic sawing machine device for a radiator. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figure 1 to Figure 6 , which is the first embodiment of the utility model, provides an adjustable automatic sawing machine device for a radiator. The adjustable automatic sawing machine device for a radiator includes a main body component 100 and a pushing component 200. The two can cooperate to push out the cut steel plate after cutting the radiator steel plate, without the need for manual removal of the steel plate.

[0030] The main assembly 100 includes a sawing machine body 101 , a placement rack 102 and a sawing blade 103 . The placement rack 102 is disposed on one side of the sawing machine body 101 , and the sawing blade 103 is located inside the sawing machine body 101 .

[0031] The sawing machine body 101 is used to cut the radiator steel plate according to specific sizes and shapes, and to divide large pieces of material into required smaller parts. The radiator steel plate is placed on the placement rack 102, and the radiator steel plate is moved into the sawing machine body 101 through the setting of the placement rack 102, and then the radiator steel plate is fixed by the fixing device on the placement rack 102, so that the radiator steel plate can be cut. The sawing knife 103 is used to cut the radiator steel plate. It can divide large pieces of steel plates into required smaller parts. A cylinder is provided on the top of the sawing knife 103, which can drive the sawing knife 103 to move. The radiator steel plate can be cut by moving the sawing knife 103 to the top of the radiator steel plate. The placement rack 102 and the sawing knife 103 are both existing technologies, so they will not be elaborated in detail.

[0032] The pushing assembly 200 is disposed on the sawing machine body 101 , and includes a pushing member 201 and a protective member 202 . The pushing member 201 is located at one side of the sawing blade 103 , and the protective member 202 is disposed on the pushing member 201 .

[0033] There are two groups of pushing components 200, both of which are located on the sawing machine body 101. After the radiator steel plate is cut, the sawing knife 103 will rise, and the sawing knife 103 can drive the pushing member 201 to move when rising. The radiator steel plate after cutting will be pushed out of the sawing machine body 101 through the movement of the pushing member 201 to prevent the operator from being cut due to manual picking. When the radiator steel plate is cut, the sawing machine body 101 can be closed by setting the protective member 202 to prevent sparks generated during cutting from flying. When the pushing member 201 moves to push the radiator steel plate out, the protective member 202 will open, so that the radiator steel plate can be moved out of the sawing machine body 101. When the sawing knife 103 descends to cut the radiator steel plate, it will not drive the pushing member 201 to move.

[0034] Example 2

[0035] Reference Figure 1 to Figure 6 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0036] Specifically, the pushing member 201 includes a moving plate 201 a and a pushing plate 201 b . The moving plate 201 a is disposed on one side of the saw blade 103 , and the pushing plate 201 b is fixed to one side of the moving plate 201 a .

[0037] After the cutting of the radiator steel plate is completed, the saw blade 103 will rise, and the saw blade 103 will drive the movable plate 201a to move when rising, and the movement of the movable plate 201a will drive the push plate 201b to move, and the movement of the push plate 201b can push out the radiator steel plate after cutting. One side of the push plate 201b is set as a slope to facilitate contact with one side of the radiator steel plate.

[0038] Specifically, the pushing member 201 also includes a first support shaft 201c and a first torsion spring 201d. The first support shaft 201c is inserted into the bottom of the movable plate 201a, and the first support shaft 201c is movably connected to the top of the sawing machine body 101. One end of the first torsion spring 201d is fixed to the bottom of the movable plate 201a, and the other end is fixed to the top of the sawing machine body 101.

[0039] When moving, the movable plate 201a can drive the first support shaft 201c to rotate. The rotation of the first support shaft 201c can support the movable plate 201a to prevent the movable plate 201a from shifting when moving. When the first support shaft 201c rotates, a torsional force can be applied to the first torsion spring 201d. After the movable plate 201a moves to push out the radiator steel plate, the rotational force of the first torsion spring 201d can drive the movable plate 201a to return to its original position for next use.

[0040] Specifically, the pusher 201 further includes a first gear 201e and a second gear 201f. The first gear 201e is fixed to the top of the moving plate 201a, and the second gear 201f is located on the top of the first gear 201e.

[0041] Bevel teeth are provided on the first gear 201e and the second gear 201f. The first gear 201e and the second gear 201f are meshed. After the sawing knife 103 completes cutting of the radiator steel plate, it rises. The rise of the sawing knife 103 can drive the second gear 201f to rotate. The second gear 201f can drive the first gear 201e to rotate by rotating. The rotation of the first gear 201e can drive the movable plate 201a to rotate. When the sawing knife 103 descends to cut the radiator steel plate, the second gear 201f will reverse. When the second gear 201f reverses on the first gear 201e, due to the bevel teeth provided on the first gear 201e and the second gear 201f, the second gear 201f will not drive the first gear 201e to rotate.

[0042] Specifically, the pusher 201 also includes a spring 201g and a positioning sleeve 201h. The positioning sleeve 201h is sleeved on the outside of the second gear 201f. The positioning sleeve 201h is movably connected to the second gear 201f. One end of the spring 201g is fixed to the top of the second gear 201f, and the other end is fixed to the bottom of the positioning sleeve 201h.

[0043] When the second gear 201f reverses on the first gear 201e, the setting of the bevel teeth can make the second gear 201f move when the first gear 201e squeezes the second gear 201f, and the second gear 201f can apply a squeezing force to the spring 201g when moving, and then the rebound force of the spring 201g can make the second gear 201f and the first gear 201e re-engage, so that the second gear 201f and the first gear 201e can always maintain an engaged state, and when the second gear 201f rotates forward, it can drive the first gear 201e to rotate, and the positioning sleeve 201h is fixed to the inner wall of the sawing machine body 101, and the second gear 201f can be supported by the setting of the positioning sleeve 201h to prevent the second gear 201f from deviating.

[0044] Specifically, the pusher 201 further includes a rotating sleeve 201i and a driving bar 201j. The rotating sleeve 201i is fixed to the top of the second gear 201f. The driving bar 201j is plugged into the top of the rotating sleeve 201i. The driving bar 201j and the rotating sleeve 201i are movably connected.

[0045] A driving groove is provided in the rotating sleeve 201i, and a driving block is provided on the driving bar 201j. When the saw blade 103 moves, it will drive the driving bar 201j to move in the rotating sleeve 201i. At this time, the driving block can be used to squeeze the driving groove to rotate the rotating sleeve 201i. The rotation of the rotating sleeve 201i can drive the second gear 201f to rotate.

[0046] Specifically, the pushing member 201 also includes a moving rod 201k, a supporting sleeve 201l and a driving block 201m. The moving rod 201k is fixed to the top of the driving bar 201j, the supporting sleeve 201l is sleeved on the outside of the moving rod 201k, the supporting sleeve 201l and the moving rod 201k are movably connected, and the driving block 201m is sleeved on the outside of the supporting sleeve 201l.

[0047] The driving block 201m is fixed to one side of the saw blade 103, and a clamping block is provided at one end of the moving rod 201k. When the saw blade 103 moves, it can drive the driving block 201m to move. The movement of the driving block 201m can drive the supporting sleeve 201l to move. The supporting sleeve 201l is moved to the inner wall to contact one end of the moving rod 201k, so that the moving rod 201k can be squeezed to make the moving rod 201k move. The movement of the moving rod 201k can drive the driving bar 201j to move. When the saw blade 103 rises, the supporting sleeve 201l is moved to contact the clamping block at one end of the moving rod 201k to squeeze it, thereby driving the moving rod 201k to rise.

[0048] Example 3

[0049] Reference Figure 2 to Figure 5 , which is the third embodiment of the utility model, and this embodiment is based on the first two embodiments.

[0050] Specifically, the protective member 202 includes a protective door 202a, a second support shaft 202b and a second torsion spring 202c. The protective door 202a is arranged on one side of the sawing machine body 101, the second support shaft 202b is inserted into the bottom of the protective door 202a, the second support shaft 202b is movably connected to the top of the sawing machine body 101, one end of the second torsion spring 202c is fixed to the bottom of the protective door 202a, and the other end is fixed to the top of the sawing machine body 101.

[0051] When cutting the radiator steel plate, the protection door 202a can be used to protect the interior of the sawing machine body 101 to prevent sparks from flying during cutting. After cutting the radiator steel plate, the radiator steel plate can be taken out by opening the protection door 202a. When the protection door 202a is opened, it can drive the second support shaft 202b to rotate. When the second support shaft 202b rotates, it can apply a torsional force to the second torsion spring 202c. After the radiator steel plate is taken out, the protection door 202a can be closed by the rotation force of the second torsion spring 202c.

[0052] Specifically, the protective member 202 also includes a driving plate 202d, a driving rod 202e and a protective shell 202f. The driving plate 202d is fixed to one side of the protective door 202a. The driving rod 202e is arranged on one side of the driving plate 202d. The protective shell 202f is fixed to one side of the sawing machine body 101.

[0053] When the movable plate 201a moves to push out the radiator steel plate, the movable plate 201a will move the driving rod 202e. The movement of the driving rod 202e can squeeze the driving plate 202d to move the driving plate 202d. The movement of the driving plate 202d can drive the protective door 202a to move and open the protective door 202a. The protective shell 202f is used to protect the driving rod 202e to prevent the driving rod 202e from being hit by external debris and causing damage.

[0054] Specifically, the protective member 202 further includes a positioning shaft 202g and a movable rod 202h. The positioning shaft 202g is plugged into the bottom of the driving rod 202e. The positioning shaft 202g and the driving rod 202e are movably connected. The movable rod 202h is fixed to one side of the movable plate 201a.

[0055] The positioning shaft 202g is fixed to the inner wall of the protective shell 202f. The positioning shaft 202g can support the driving rod 202e to prevent the driving rod 202e from being offset when moving. The movable plate 201a will drive the movable rod 202h to move when moving. The movement of the movable rod 202h can squeeze the driving rod 202e to move it.

[0056] During use, when the radiator steel plate needs to be cut, first place the radiator steel plate on the placement rack 102, move the radiator steel plate into the sawing machine body 101 through the setting of the placement rack 102, and then fix the radiator steel plate through the fixing device on the placement rack 102, and then drive the sawing knife 103 to move through the cylinder on the top of the sawing knife 103, so that the sawing knife 103 can be cut.

[0057] After the radiator steel plate is cut, the saw blade 103 will rise. When the saw blade 103 rises, it will drive the driving block 201m to move. The movement of the driving block 201m can drive the support sleeve 201l to move. The support sleeve 201l is moved to contact the block at one end of the moving rod 201k to squeeze it, so that the moving rod 201k can be driven to rise. The movement of the moving rod 201k can drive the driving bar 201j to move. The driving bar 201j moves in the rotating sleeve 201i, so that the driving block can squeeze the driving groove to rotate the rotating sleeve 201i. The rotation of the rotating sleeve 201i can drive the second gear 201f to rotate, and the second gear 201f can drive the first gear 201e to rotate by rotating. The rotation of the first gear 201e can drive the movable plate 201a to rotate. When the movable plate 201a moves, it can drive the first support shaft 201c to rotate. When the first support shaft 201c rotates, a torsional force can be applied to the first torsion spring 201d. The movement of the movable plate 201a will drive the push plate 201b to move. The movement of the push plate 201b can push out the radiator steel plate after cutting.

[0058] When the movable plate 201a moves, it will drive the movable rod 202h to move. The movement of the movable rod 202h can squeeze the driving rod 202e to move the driving rod 202e. The movement of the driving rod 202e can squeeze the driving plate 202d to move the driving plate 202d. The movement of the driving plate 202d can drive the protective door 202a to move and open the protective door 202a. When the protective door 202a is opened, it can drive the second support shaft 202b to rotate. When the second support shaft 202b rotates, it can apply a torsional force to the second torsion spring 202c. When the protective door 202a is opened, the radiator steel plate can be taken out.

[0059] A moving block is provided on one side of the second gear 201f, and a trigger rod is provided on one side of the saw blade 103. After the radiator steel plate is pushed out, the saw blade 103 will continue to rise, and the rising of the saw blade 103 drives the trigger rod to move. After the trigger rod is moved to contact with the moving block, it drives the second gear 201f to move. When the second gear 201f moves, it can apply a pulling force to the spring 201g. The second gear 201f moves and separates from the first gear 201e. At this time, the rotating force of the first torsion spring 201d can drive the moving plate 201a to return to its original position. After the moving block is moved to separate from the trigger rod, the spring 20 The 1g rebound force can drive the second gear 201f to move and engage with the first gear 201e. When the saw blade 103 is pressed down, the trigger rod will squeeze the moving block. The moving block is set to be movable. When the moving block is squeezed, the moving block will move. A reset torsion spring is set on one side of the moving block. When the trigger rod is separated from the moving block, the rotation force of the reset torsion spring can drive the moving block to return to its original position. The rotation force of the first torsion spring 201d can drive the moving plate 201a to return to its original position. At this time, the squeezing of the driving plate 202d can be released, and then the protection door 202a will be driven to close by the rotation force of the second torsion spring 202c.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An adjustable automatic sawing machine device for a radiator, characterized in that: include, A main body component (100) comprises a sawing machine body (101), a placement rack (102), and a sawing blade (103), wherein the placement rack (102) is arranged on one side of the sawing machine body (101), and the sawing blade (103) is located inside the sawing machine body (101); The pushing component (200) is arranged on the sawing machine body (101), and comprises a pushing member (201) and a protective member (202); the pushing member (201) is located on one side of the sawing blade (103), and the protective member (202) is arranged on the pushing member (201).

2. The adjustable automatic sawing machine device for radiator according to claim 1, characterized in that: The pushing member (201) comprises a moving plate (201a) and a push plate (201b); the moving plate (201a) is arranged on one side of the sawing blade (103); and the push plate (201b) is fixed to one side of the moving plate (201a).

3. The adjustable automatic sawing machine device for radiator according to claim 2, characterized in that: The pushing member (201) further comprises a first supporting shaft (201c) and a first torsion spring (201d); the first supporting shaft (201c) is plugged into the bottom of the movable plate (201a); the first supporting shaft (201c) is movably connected to the top of the sawing machine body (101); one end of the first torsion spring (201d) is fixed to the bottom of the movable plate (201a), and the other end is fixed to the top of the sawing machine body (101).

4. The adjustable automatic sawing machine device for radiator according to claim 3, characterized in that: The pushing member (201) further comprises a first gear (201e) and a second gear (201f), wherein the first gear (201e) is fixed to the top of the moving plate (201a), and the second gear (201f) is located on the top of the first gear (201e).

5. The adjustable automatic sawing machine device for radiator according to claim 4, characterized in that: The pushing member (201) further comprises a spring (201g) and a positioning sleeve (201h); the positioning sleeve (201h) is sleeved on the outside of the second gear (201f); the positioning sleeve (201h) and the second gear (201f) are movably connected; one end of the spring (201g) is fixed to the top of the second gear (201f), and the other end is fixed to the bottom of the positioning sleeve (201h).

6. The adjustable automatic sawing machine device for radiator according to claim 4 or 5, characterized in that: The pushing member (201) further comprises a rotating sleeve (201i) and a driving bar (201j), wherein the rotating sleeve (201i) is fixed to the top of the second gear (201f), the driving bar (201j) is plugged into the top of the rotating sleeve (201i), and the driving bar (201j) and the rotating sleeve (201i) are movably connected.

7. The adjustable automatic sawing machine device for radiator according to claim 6, characterized in that: The pushing member (201) further comprises a moving rod (201k), a supporting sleeve (201l) and a driving block (201m); the moving rod (201k) is fixed to the top of the driving bar (201j); the supporting sleeve (201l) is sleeved on the outside of the moving rod (201k); the supporting sleeve (201l) and the moving rod (201k) are movably connected; and the driving block (201m) is sleeved on the outside of the supporting sleeve (201l).

8. The adjustable automatic sawing machine device for radiator according to claim 7, characterized in that: The protective member (202) comprises a protective door (202a), a second support shaft (202b) and a second torsion spring (202c); the protective door (202a) is arranged on one side of the sawing machine body (101); the second support shaft (202b) is plugged into the bottom of the protective door (202a); the second support shaft (202b) is movably connected to the top of the sawing machine body (101); one end of the second torsion spring (202c) is fixed to the bottom of the protective door (202a) and the other end is fixed to the top of the sawing machine body (101).

9. The adjustable automatic sawing machine device for radiator according to claim 8, characterized in that: The protective member (202) further comprises a driving plate (202d), a driving rod (202e) and a protective shell (202f); the driving plate (202d) is fixed to one side of the protective door (202a); the driving rod (202e) is arranged on one side of the driving plate (202d); and the protective shell (202f) is fixed to one side of the sawing machine body (101).

10. The adjustable automatic sawing machine device for radiator according to claim 9, characterized in that: The protective member (202) further comprises a positioning shaft (202g) and a movable rod (202h), wherein the positioning shaft (202g) is plugged into the bottom of the driving rod (202e), the positioning shaft (202g) and the driving rod (202e) are movably connected, and the movable rod (202h) is fixed to one side of the movable plate (201a).

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