A separation membrane cutting and positioning structure

Abstract

The utility model discloses a separation membrane cutting and positioning structure, which belongs to the technical field of separation membrane processing, and includes a lower positioning plate, wherein an upper positioning plate is arranged above the lower positioning plate; the utility model is provided with a protection component and a placement component, and the protection tube is pulled downward, and the protection tube moves to drive the first spring to stretch, and when the protection tube covers the periphery of the cutting knife, the plug-in rod is pulled again, and the plug-in rod moves to drive the second spring to stretch, and then the pressing plate is moved to make it away from the protection cover, and then the protection cover is removed from the L-shaped plate, and the protection cover is fitted to one end of the protection tube, and the plug-in block is then plugged into the plug-in slot, and then the plug-in rod is released, and the second spring restores its original appearance and drives the plug-in rod to move and plug into the inside of the limiting slot. Under the action of the protection tube and the protection cover, the cutting knife can be protected, so that the operator is prevented from touching the cutting knife during the subsequent positioning operation of the separation membrane, thereby preventing the operator from being injured.

Description

Technical Field

[0001] The utility model belongs to the technical field of separation membrane processing, and in particular relates to a separation membrane cutting and positioning structure. Background Art

[0002] Separation membrane: a membrane material with selective permeability. Usually, it can be divided into microfiltration membrane, ultrafiltration membrane, nanofiltration membrane, reverse osmosis membrane, pervaporation membrane, ion exchange membrane, etc. according to the separation mechanism and application scope.

[0003] Chinese patent application No. 202320148276.9 discloses a cutting positioning assembly for release film processing, including an upper positioning plate, the four corners of the upper positioning plate are threadedly connected with bolts for adjusting the height, the top of one side of the upper positioning plate is fixedly connected with a cutting assembly for cutting the release film, the top of the upper positioning plate away from the cutting assembly is provided with a sliding groove for installing a cutting knife, and the bottom of the upper positioning plate is provided with a lower positioning plate for cooperating and fixing the release film. The utility model is provided with a positioning plate and a screw rod, the four corners of the upper positioning plate are threadedly connected with bolts, the top of one side of the upper positioning plate is fixedly connected with a cutting assembly for cutting the release film, the bottom of the upper positioning plate is provided with a lower positioning plate for cooperating and fixing the release film, and the outer surface of the screw rod away from the motor is threadedly connected with a moving ring, so that the release film can be tightly fixed and cut, and the cutting knife can move forward, backward, left and right to cut, thereby meeting the user's various size requirements.

[0004] In the above patent, a cutting knife is used to cut the separation membrane, but the cutting knife is directly exposed to the outside. When the staff is placing and positioning the separation membrane, the cutting knife may be accidentally touched, which may easily cause injury to the staff. In addition, after the upper positioning plate is moved up, the upper positioning plate needs to be supported manually before the separation membrane can be placed on the lower positioning plate, which increases the labor burden of the staff and affects the cutting and positioning efficiency of the separation membrane. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a separation membrane cutting and positioning structure, which has the characteristics of protection and support.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a separation membrane cutting and positioning structure, comprising a lower positioning plate, an upper positioning plate is arranged above the lower positioning plate, a fixing mechanism is arranged between the lower positioning plate and the upper positioning plate, a total of four fixing mechanisms are arranged in a rectangular array, support components are arranged on the outer walls of the upper positioning plate and the lower positioning plate, a moving mechanism is arranged above the upper positioning plate, a mounting plate is arranged on one side of the moving mechanism, a placing component is arranged on the side wall of the mounting plate, a cutting knife is connected to the bottom of the mounting plate, and a protective component is arranged inside the mounting plate and at the periphery of the cutting knife.

[0007] Preferably, the protective assembly includes a first spring, a storage cavity, a protective cylinder, a protective cover, a plug-in block, a plug-in rod, a second spring, a plug-in slot and a limit slot. A storage cavity is provided inside the mounting plate, a protective cylinder is plugged into the storage cavity, a first spring is connected between the storage cavity and the protective cylinder, a protective cover is provided at one end of the protective cylinder, a plug-in block is connected to one end of the protective cover close to the protective cylinder, a plug-in slot is provided inside the protective cylinder and at a position corresponding to the plug-in block, a plug-in rod is plugged into one side of the plug-in slot, a second spring is connected between the plug-in rod and the protective cylinder, and a limit slot is provided on the side wall of the plug-in block and at a position corresponding to the plug-in rod.

[0008] Preferably, the placement assembly includes an L-shaped plate, a fixed cylinder, a third spring, a clamping plate and a moving rod, the L-shaped plate is connected to the side wall of the mounting plate, a clamping plate is arranged above the L-shaped plate, the moving rod is connected to the side wall of the clamping plate, a fixed cylinder is connected to the side wall of the L-shaped plate and at a position corresponding to the moving rod, and a third spring is connected between the moving rod and the L-shaped plate and inside the fixed cylinder.

[0009] Preferably, one end of the abutting plate close to the L-shaped plate is connected to a guide slide block, and a guide groove is provided on the side wall of the L-shaped plate at a position corresponding to the guide slide block.

[0010] Preferably, the supporting assembly includes a fixed box, a lifting block, a lifting cylinder, a threaded sleeve, a first gear, a second gear, a rotating rod and a threaded rod. The fixed box is connected to the side wall of the lower positioning plate, the lifting block is connected to the side wall of the upper positioning plate and at a position corresponding to the fixed box, the rotating rod is connected to the side wall of the fixed box, one end of the rotating rod is connected to the second gear, a threaded rod is connected above the fixed box, one end of the threaded rod close to the second gear is connected to the first gear, a threaded sleeve is connected to the outer wall of the threaded rod, and a lifting cylinder is connected to the side of the lifting block close to the threaded rod and located on the periphery of the threaded rod.

[0011] Preferably, guide posts are connected to both sides of the upper portion of the fixing box, and guide holes are provided on the threaded sleeve at positions corresponding to the guide posts.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a protection component and a placement component. The protection tube is pulled downward, and the protection tube moves to drive the first spring to stretch. When the protection tube covers the periphery of the cutting knife, the plug-in rod is pulled again, and the plug-in rod moves to drive the second spring to stretch, and then the pressing plate is moved to make it away from the protection cover, and then the protection cover is removed from the L-shaped plate, and the protection cover is attached to one end of the protection tube, and the plug-in block is then plugged into the plug-in slot, and then the plug-in rod is released, and the second spring returns to its original appearance and drives the plug-in rod to move and plug into the inside of the limit slot. Under the action of the protection tube and the protection cover, the cutting knife can be protected to avoid contact between the operator and the cutting knife during the subsequent positioning operation of the separation membrane, thereby avoiding injury to the operator.

[0014] 2. The utility model is provided with a supporting assembly. When the upper positioning plate and the lower positioning plate are needed to perform a positioning operation on the separation membrane, the rotating rod is rotated first. The rotation of the rotating rod drives the first gear to rotate. The rotation of the first gear drives the second gear to rotate. The rotation of the second gear drives the threaded rod to rotate. The rotation of the threaded rod drives the threaded sleeve to move upward. The upward movement of the threaded sleeve pushes the lifting cylinder upward. The upward movement of the lifting cylinder drives the lifting block upward. The upward movement of the lifting block drives the upper positioning plate upward. The upper positioning plate is supported, and then the separation membrane is placed on the lower positioning plate to prevent the upper positioning plate from affecting the placement operation of the separation membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the mounting plate of the utility model;

[0018] Figure 4 For this utility model Figure 3 The enlarged view of point A in the middle;

[0019] Figure 5 It is a cross-sectional view of the L-shaped plate of the utility model;

[0020] Figure 6 It is a cross-sectional view of the connection state of the end block and the lifting block of the utility model.

[0021] In the figure: 1. fixing mechanism; 2. moving mechanism; 3. mounting plate; 4. upper positioning plate; 5. lower positioning plate; 6. supporting assembly; 61. fixing box; 62. lifting block; 63. lifting cylinder; 64. threaded sleeve; 65. first gear; 66. second gear; 67. rotating rod; 68. threaded rod; 7. protective assembly; 71. first spring; 72. storage chamber; 73. protective cylinder; 74. protective cover; 75. plug-in block; 76. plug-in rod; 77. second spring; 78. plug-in slot; 79. limiting slot; 8. cutting knife; 9. placing assembly; 91. L-shaped plate; 92. fixing cylinder; 93. third spring; 94. pressing plate; 95. moving rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-6 The utility model provides the following technical solutions: a separation membrane cutting and positioning structure, comprising a lower positioning plate 5, an upper positioning plate 4 is arranged above the lower positioning plate 5, a fixing mechanism 1 is arranged between the lower positioning plate 5 and the upper positioning plate 4, a total of four fixing mechanisms 1 are arranged, and the four fixing mechanisms 1 are arranged in a rectangular array, a supporting assembly 6 is arranged on the outer side walls of the upper positioning plate 4 and the lower positioning plate 5, a moving mechanism 2 is arranged above the upper positioning plate 4, a mounting plate 3 is arranged on one side of the moving mechanism 2, a placing assembly 9 is arranged on the side wall of the mounting plate 3, a cutting knife 8 is connected to the bottom of the mounting plate 3, and a protective assembly 7 is arranged inside the mounting plate 3 and outside the cutting knife 8.

[0025] Specifically, the protective assembly 7 includes a first spring 71, a storage cavity 72, a protective cylinder 73, a protective cover 74, a plug-in block 75, a plug-in rod 76, a second spring 77, a plug-in slot 78 and a limiting slot 79. The mounting plate 3 is provided with a storage cavity 72 inside, the protective cylinder 73 is plugged into the storage cavity 72, the first spring 71 is connected between the storage cavity 72 and the protective cylinder 73, one end of the protective cylinder 73 is provided with a protective cover 74, the end of the protective cover 74 close to the protective cylinder 73 is connected to the plug-in block 75, the inside of the protective cylinder 73 and the position of the plug-in block 75 are provided with a plug-in slot 78, a plug-in rod 76 is plugged into one side of the plug-in slot 78, a second spring 77 is connected between the plug-in rod 76 and the protective cylinder 73, and a limiting slot 79 is provided on the side wall of the plug-in block 75 and at the position of the plug-in rod 76.

[0026] When the locking cam 73 is in the unlocking state, the locking cam 73 is unlocked and the locking cam 73 is in the unlocking state, so that the locking cam 73 can be unlocked easily.

[0027] Specifically, the placement assembly 9 includes an L-shaped plate 91, a fixed cylinder 92, a third spring 93, a clamping plate 94 and a moving rod 95. The side wall of the mounting plate 3 is connected with the L-shaped plate 91, the upper part of the L-shaped plate 91 is provided with a clamping plate 94, the side wall of the clamping plate 94 is connected with the moving rod 95, the side wall of the L-shaped plate 91 and the position corresponding to the moving rod 95 is connected with the fixed cylinder 92, and the third spring 93 is connected between the moving rod 95 and the L-shaped plate 91 and located inside the fixed cylinder 92.

[0028] By adopting the above-mentioned technical solution, after removing the protective cover 74 from one end of the protective tube 73, the protective cover 74 is placed on the L-shaped plate 91 and is located on one side of the clamping plate 94. The clamping plate 94 moves due to the squeezing action of the protective cover 74. The movement of the clamping plate 94 drives the moving rod 95 to move into the fixed tube 92. The moving rod 95 moves to squeeze the third spring 93. The clamping plate 94 can be used to clamp and fix the protective cover 74 to ensure the stability of the placement of the protective cover 74.

[0029] Specifically, one end of the abutting plate 94 close to the L-shaped plate 91 is connected to a guide slider, and a guide slot is provided on the side wall of the L-shaped plate 91 at a position corresponding to the guide slider.

[0030] By adopting the above technical solution, the movement of the clamping plate 94 drives the guide slider to move inside the guide slot. Under the sliding cooperation of the guide slider and the guide slot, a guiding effect can be provided for the movement of the clamping plate 94, thereby improving the stability of the movement of the clamping plate 94.

[0031] When the present embodiment is used, the separation film to be cut is placed on the lower positioning plate 5, and then the fixing mechanism 1 is used to drive the upper positioning plate 4 to move downward to position the separation film, and then the plug-in rod 76 is pulled, and the plug-in rod 76 moves to drive the second spring 77 to stretch. When the plug-in rod 76 is away from the limiting groove 79, the external fixing force between the plug-in block 75 and the protective tube 73 is lost, and then the protective cover 74 is removed from one end of the protective tube 73, and the protective cover 74 is placed on the L-shaped plate 91 and positioned against the plate On one side of 94, the pressing plate 94 is pressed by the protective cover 74 to move, and the pressing plate 94 moves to drive the moving rod 95 to move into the fixed cylinder 92, and the moving rod 95 moves to squeeze the third spring 93, and the pressing plate 94 can be used to press and fix the protective cover 74, and then the moving mechanism 2 is used to drive the mounting plate 3 to move, and the mounting plate 3 moves to drive the cutting knife 8 to move to cut the separation membrane. After the separation membrane is cut, the protective cylinder 73 is pulled downward to the mounting plate 3 to keep it away from the storage The protective tube 73 moves to stretch the first spring 71. When the protective tube 73 covers the periphery of the cutting knife 8, the abutting plate 94 is moved to keep it away from the protective cover 74. The abutting plate 94 moves to drive the moving rod 95 to move inside the fixed tube 92. The moving rod 95 moves to squeeze the third spring 93, and then pulls the plug rod 76. The plug rod 76 moves to stretch the second spring 77, and then removes the protective cover 74 from the L-shaped plate 91. Then, the protective cover 74 is attached to one end of the protective tube 73, and the protective cover 74 is removed from the L-shaped plate 91. The plug-in block 75 is plugged into the plug-in slot 78, and then the plug-in rod 76 is released, and the second spring 77 is restored to its original state to drive the plug-in rod 76 to move and plug into the limiting slot 79, so that the protective cover 74 can be plugged and fixed. Under the action of the protective cylinder 73 and the protective cover 74, the cutting knife 8 can be protected to avoid contact between the operator and the cutting knife 8 when the upper positioning plate 4 and the lower positioning plate 5 are used to position the separation membrane, thereby avoiding injury to the operator;

[0032] Example 2

[0033] The present embodiment is different from the embodiment 1 in that: the support assembly 6 includes a fixed box 61, a lifting block 62, a lifting cylinder 63, a threaded sleeve 64, a first gear 65, a second gear 66, a rotating rod 67 and a threaded rod 68. The fixed box 61 is connected to the side wall of the lower positioning plate 5, the lifting block 62 is connected to the side wall of the upper positioning plate 4 and at a position corresponding to the fixed box 61, the rotating rod 67 is connected to the side wall of the fixed box 61, one end of the rotating rod 67 is connected to the second gear 66, the top of the fixed box 61 is connected to the threaded rod 68, the end of the threaded rod 68 close to the second gear 66 is connected to the first gear 65, the outer wall of the threaded rod 68 is connected to the threaded sleeve 64, and the lifting cylinder 63 is connected to the lifting block 62 on one side close to the threaded rod 68 and located on the periphery of the threaded rod 68.

[0034] Specifically, guide posts are connected to both sides of the upper part of the fixing box 61, and guide holes are provided on the threaded sleeve 64 at positions corresponding to the guide posts.

[0035] By adopting the above technical solution, in the process of using the threaded rod 68 to drive the threaded sleeve 64 to move, under the guiding action of the guide column and the guide hole, the stability of the movement of the threaded sleeve 64 can be ensured, and the threaded sleeve 64 can be prevented from rotating with the rotation of the threaded rod 68.

[0036] When the present embodiment is used, when the upper positioning plate 4 and the lower positioning plate 5 are needed to perform positioning operation on the separation membrane, the rotating rod 67 is rotated first, and the rotating rod 67 rotates to drive the first gear 66 to rotate, and the first gear 66 rotates to drive the second gear 65 to rotate, and the second gear 65 rotates to drive the threaded rod 68 to rotate, and the threaded rod 68 rotates to drive the threaded sleeve 64 to move upward, and the threaded sleeve 64 moves upward to push the lifting cylinder 63 to move upward, and the lifting cylinder 63 moves upward to drive the lifting block 62 to move upward, and the lifting block 62 moves upward to drive the upper positioning plate 4 to move upward, and the upper positioning plate 4 is supported, and then the separation membrane is placed on the lower positioning plate 4. The upper positioning plate 5 is placed on the positioning plate 5 to prevent the upper positioning plate 4 from affecting the placement operation of the separation membrane. After the separation membrane is placed, the rotating rod 67 is rotated again. The rotation of the rotating rod 67 drives the first gear 66 to rotate. The rotation of the first gear 66 drives the second gear 65 to rotate. The rotation of the second gear 65 drives the threaded rod 68 to rotate. The rotation of the threaded rod 68 drives the threaded sleeve 64 to move upward. The upward movement of the threaded sleeve 64 pushes the lifting cylinder 63 to move downward. The downward movement of the lifting cylinder 63 drives the lifting block 62 to move downward. The downward movement of the lifting block 62 drives the upper positioning plate 4 to move downward. Then the fixing mechanism 1 is used to fix the upper positioning plate 4 and the lower positioning plate 5.

[0037] The structure and principle of the fixing mechanism 1 composed of a stud and a nut in the utility model have been disclosed in a cutting and positioning assembly for release film processing disclosed in Chinese patent application No. 202320148276.9, and its working principle is: a stud is connected to the top of the lower positioning plate 5, and one end of the stud passes through the upper positioning plate 4 and is connected to a nut. When in use, the upper positioning plate 4 is moved down along the stud, and then the nut is rotated to rotate and move down along the stud. When the nut is in contact with the upper positioning plate 4, stop rotating the nut. Under the action of the nut and the stud, the upper positioning plate 4 and the lower positioning plate 5 can be fixed.

[0038] The structure and principle of the moving mechanism 2 composed of a sliding groove, a fixed ring, a motor, a screw rod, a moving ring, a fixed plate, a connecting rod, a sliding plate, a moving block, and a handle in the utility model have been disclosed in a cutting and positioning assembly for release film processing disclosed in Chinese patent application number 202320148276.9. Its working principle is: the fixed ring is fixedly connected to one side of the top of the upper positioning plate 4, the motor is fixedly connected to the fixed ring, the output end of the motor is fixedly connected to the screw rod, the outer surface of one end of the screw rod is threadedly connected to the moving ring, the end of the screw rod away from the motor is rotatably connected to a fixed plate that stabilizes the screw rod through a bearing, the fixed plate is fixedly connected to the upper positioning plate 4, and one side of the moving ring is fixedly connected A connecting rod is connected, a moving block is sleeved on the surface of the connecting rod, a handle is connected above the moving block, and a sliding plate is fixedly connected to the end of the connecting rod away from the moving ring, and a sliding groove is provided above the upper positioning disk 4 and at a position corresponding to the sliding plate. When in use, the motor is started, the motor rotates and drives the lead screw at the output end to rotate around its own axis, the lead screw rotates and drives the moving ring on the surface to move along the axis of the lead screw, the moving ring moves and drives the connecting rod on one side to move along the axis of the lead screw, and the moving block on the surface of the connecting rod reciprocates along the axis of the lead screw. Hold the handle so that the moving block can slide along the axis of the connecting rod, thereby changing the front, back, left, and right positions of the cutting knife 8, and cutting the desired size.

[0039] The working principle and use process of the utility model: when the utility model needs to use the upper positioning plate 4 and the lower positioning plate 5 to perform the positioning operation on the separation membrane, first rotate the rotating rod 67, the rotating rod 67 rotates to drive the first gear 66 to rotate, the first gear 66 rotates to drive the second gear 65 to rotate, the second gear 65 rotates to drive the threaded rod 68 to rotate, the threaded rod 68 rotates to drive the threaded sleeve 64 to move up, the threaded sleeve 64 moves up to push the lifting cylinder 63 to move up, the lifting cylinder 63 moves up to drive the lifting block 62 to move up, the lifting block 62 moves up to drive the upper positioning plate 4 to move up, the upper positioning plate 4 is supported, and then the separation membrane is placed on the lower positioning plate 5 to prevent the upper positioning plate 4 from affecting the placement operation of the separation membrane. After the separation membrane is placed, the rotating rod 67 is rotated again, and the rotating rod 67 rotates to drive The first gear 66 is driven to rotate, and the rotation of the first gear 66 drives the second gear 65 to rotate. The rotation of the second gear 65 drives the threaded rod 68 to rotate. The rotation of the threaded rod 68 drives the threaded sleeve 64 to move upward. The upward movement of the threaded sleeve 64 pushes the lifting cylinder 63 to move downward. The downward movement of the lifting cylinder 63 drives the lifting block 62 to move downward. The downward movement of the lifting block 62 drives the upper positioning plate 4 to move downward, and then the fixing mechanism 1 is used to fix the upper positioning plate 4 and the lower positioning plate 5, and then the plug-in rod 76 is pulled. The plug-in rod 76 moves to drive the second spring 77 to stretch. When the plug-in rod 76 is away from the limiting groove 79, the external fixing force between the plug-in block 75 and the protective cylinder 73 is lost, and then the protective cover 74 is removed from one end of the protective cylinder 73, and the protective cover 74 is placed on the L-shaped plate 91 and positioned. On one side of the clamping plate 94, the clamping plate 94 is squeezed by the protective cover 74 and moves. The movement of the clamping plate 94 drives the moving rod 95 to move into the fixed cylinder 92. The moving rod 95 moves and squeezes the third spring 93. The clamping plate 94 can be used to clamp and fix the protective cover 74, and then the moving mechanism 2 is used to drive the mounting plate 3 to move. The movement of the mounting plate 3 drives the cutting knife 8 to move to cut the separation membrane. After the separation membrane is cut, the protective cylinder 73 is pulled downwardly from the mounting plate 3 to keep it away from the storage chamber 72. The movement of the protective cylinder 73 drives the first spring 71 to stretch. When the protective cylinder 73 covers the periphery of the cutting knife 8, the clamping plate 94 is moved again to keep it away from the protective cover 74. The movement of the clamping plate 94 drives the moving rod 95 to move into the fixed cylinder 92. The movable rod 95 moves to squeeze the third spring 93, and then pulls the plug-in rod 76. The plug-in rod 76 moves to drive the second spring 77 to stretch, and then remove the protective cover 74 from the L-shaped plate 91, and then fit the protective cover 74 to one end of the protective cylinder 73, and make the plug-in block 75 plug into the plug-in slot 78, and then release the plug-in rod 76. The second spring 77 returns to its original appearance and drives the plug-in rod 76 to move and plug into the limiting slot 79, so that the protective cover 74 can be plugged and fixed. Under the action of the protective cylinder 73 and the protective cover 74, the cutting knife 8 can be protected to avoid contact between the operator and the cutting knife 8 when the upper positioning plate 4 and the lower positioning plate 5 are used to position the separation membrane, thereby avoiding injury to the operator.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separation membrane cutting and positioning structure, comprising a lower positioning plate, characterized in that: An upper positioning plate is arranged above the lower positioning plate, a fixing mechanism is arranged between the lower positioning plate and the upper positioning plate, a total of four fixing mechanisms are arranged, and the four fixing mechanisms are arranged in a rectangular array, a supporting assembly is arranged on the outer side walls of the upper positioning plate and the lower positioning plate, a moving mechanism is arranged above the upper positioning plate, a mounting plate is arranged on one side of the moving mechanism, a placing assembly is arranged on the side wall of the mounting plate, a cutting knife is connected to the lower side of the mounting plate, and a protective assembly is arranged inside the mounting plate and outside the cutting knife; The protective assembly includes a first spring, a storage cavity, a protective cylinder, a protective cover, a plug-in block, a plug-in rod, a second spring, a plug-in slot and a limit slot. The mounting plate is provided with a storage cavity inside, the protective cylinder is plugged into the storage cavity, the first spring is connected between the storage cavity and the protective cylinder, one end of the protective cylinder is provided with a protective cover, the end of the protective cover close to the protective cylinder is connected to the plug-in block, the inside of the protective cylinder is provided with a plug-in slot corresponding to the plug-in block, a plug-in rod is plugged into one side of the plug-in slot, a second spring is connected between the plug-in rod and the protective cylinder, and a limit slot is provided on the side wall of the plug-in block corresponding to the plug-in rod; The supporting assembly includes a fixed box, a lifting block, a lifting cylinder, a threaded sleeve, a first gear, a second gear, a rotating rod and a threaded rod. The fixed box is connected to the side wall of the lower positioning plate, the lifting block is connected to the side wall of the upper positioning plate and at a position corresponding to the fixed box, the rotating rod is connected to the side wall of the fixed box, one end of the rotating rod is connected to the second gear, the top of the fixed box is connected to the threaded rod, the end of the threaded rod close to the second gear is connected to the first gear, the threaded sleeve is connected to the outer wall of the threaded rod, and the lifting cylinder is connected to a side of the lifting block close to the threaded rod and located on the periphery of the threaded rod.

2. A separation membrane cutting and positioning structure according to claim 1, characterized in that: The placement assembly includes an L-shaped plate, a fixed cylinder, a third spring, a clamping plate and a moving rod. The L-shaped plate is connected to the side wall of the mounting plate, a clamping plate is arranged above the L-shaped plate, the moving rod is connected to the side wall of the clamping plate, a fixed cylinder is connected to the side wall of the L-shaped plate and at a position corresponding to the moving rod, and a third spring is connected between the moving rod and the L-shaped plate and inside the fixed cylinder.

3. A separation membrane cutting and positioning structure according to claim 2, characterized in that: One end of the abutting plate close to the L-shaped plate is connected with a guide sliding block, and a guide sliding groove is arranged on the side wall of the L-shaped plate at a position corresponding to the guide sliding block.

4. A separation membrane cutting and positioning structure according to claim 1, characterized in that: Both sides of the upper part of the fixing box are connected with guide posts, and guide holes are arranged on the threaded sleeve at positions corresponding to the guide posts.

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