Lifting head mechanism

Abstract

The present application relates to the field of platelet testing technology, and in particular to a lifting and lowering pressure head mechanism. A lifting and lowering pressure head mechanism includes a driving assembly, a pressure head member, and a sealing assembly corresponding to the pressure head member; the driving assembly can drive the pressure head member and the sealing assembly to move in a first direction so that the pressure head member is pressed against the test kit of the platelet analyzer; when the pressure head member moves to the first position, the pressure head member stops moving, and the driving assembly can drive the sealing assembly to move in the first direction so that the sealing assembly is pressed against the pressure head member so that the pressure head member moves to the second position and seals the test kit; after the pressure head member moves to the second position, the driving assembly can drive the sealing assembly to move away from the pressure head member in the second direction, and when the sealing assembly and the pressure head member move to the first position, the driving assembly simultaneously drives the pressure head member and the sealing assembly to move in the second direction. In summary, the present application has a simple structure.

Description

Technical Field

[0001] The present application relates to the technical field of platelet testing, and in particular to a lifting and lowering pressure head mechanism. Background Art

[0002] With the advancement of science and technology, the diagnosis and treatment of diseases are gradually improving. Platelet analyzers are widely used as important instruments for blood analysis. However, the lifting and lowering pressure head device of the existing platelet analyzer has a complex structure and poor flexibility. Summary of the invention

[0003] The purpose of the present application is to provide a pressure head lifting mechanism, which can solve the technical problem of the complex structure of the pressure head lifting device of the platelet analyzer in the prior art to a certain extent.

[0004] The present application provides a lifting pressure head mechanism for a platelet analyzer, comprising a driving assembly, a pressure head component, and a sealing assembly corresponding to the pressure head component;

[0005] The driving assembly is capable of driving the pressing head component and the sealing assembly to move along a first direction so that the pressing head component is pressed toward the reagent kit of the platelet analyzer;

[0006] When the pressing head member moves to the first position, the pressing head member stops moving, and the driving assembly can drive the sealing assembly to move along the first direction, so that the sealing assembly presses against the pressing head member, so that the pressing head member moves to the second position and seals the reagent box;

[0007] When the pressure head component moves to the second position, the driving assembly can drive the sealing assembly to move along the second direction away from the pressure head component. When the sealing assembly and the pressure head component move to the first position, the driving assembly simultaneously drives the pressure head component and the sealing assembly to move along the second direction.

[0008] In the above technical solution, further, a support member is included; the pressure head member and the sealing assembly are both arranged on the support member, and the pressure head member is movably connected to the support member;

[0009] The support member is connected to the driving end of the driving assembly, and the driving end drives the support member to move along the first direction or the second direction, so that the pressure head component and the sealing assembly can move along the first direction or the second direction.

[0010] In the above technical solution, further, the pressure head component includes a fixing portion, a connecting portion and an abutting portion connected in sequence;

[0011] The fixing portion can be mounted on the supporting member, the abutting portion is arranged toward the reagent box, and the end of the abutting portion can extend into the box opening of the reagent box to seal the reagent box, and the connecting portion is arranged toward the sealing component.

[0012] In the above technical solution, further, a sealing ring is sleeved on the end of the abutting portion.

[0013] In the above technical solution, further, the driving assembly includes a driving member and a guide column;

[0014] The driving end of the driving member is connected to the supporting member, the supporting member is sleeved on the guide column, and the supporting member and the sealing assembly can move on the guide column along the first direction or the second direction.

[0015] In the above technical solution, further, the sealing assembly includes a guide block, a guide shaft and an elastic member;

[0016] The guide block is placed on the support member and sleeved on the guide column; a mounting groove is provided on the side of the guide block facing the connecting portion; one end of the guide shaft passes through the guide block and forms a clamping portion, and the other end of the guide shaft is sleeved with a blocking member; the elastic member is placed in the mounting groove, and the two ends thereof are respectively abutted against the clamping portion and the guide block;

[0017] When the pressure head member is located at the first position and the driving end drives the sealing assembly to move along the first direction, the elastic member is compressed; when the pressure head member is located at the second position and the driving end drives the sealing assembly to move along the second direction, the elastic member is reset.

[0018] In the above technical solution, further, a first limit assembly is included, wherein the first limit assembly includes a first trigger and a first optical coupler;

[0019] The first optical coupler is arranged on the supporting member, one end of the first trigger member is placed between the clamping portion and the guide block, and the other end of the first trigger member extends toward the first optical coupler to form a first limiting portion;

[0020] A groove is formed on the first limiting portion, and a first limiting end surface and a second limiting end surface are sequentially formed on both sides of the groove along the second direction;

[0021] When the pressing head component moves to the second position along the first direction, and the first limiting end surface is able to trigger the first optical coupler, the driving component stops driving;

[0022] When the pressing head component moves to the first position along the second direction and the second limiting end surface triggers the first optical coupler, the driving component stops driving.

[0023] In the above technical solution, further, a second limiter assembly is included, the second limiter assembly includes a second trigger and a second optical coupler; the guide column extends along the second direction to form an extension portion, and the second optical coupler is placed on the extension portion;

[0024] The second triggering member is disposed on the guide block. When the second triggering member triggers the second optical coupler, the sealing assembly and the pressing head component simultaneously stop moving along the second direction, so that the pressing head component is reset to the first position.

[0025] In the above technical solution, further, it also includes a guide column support seat, and the guide column is placed on the guide column support seat.

[0026] In the above technical solution, further, it also includes a third limiting assembly, the third limiting assembly includes a limiting plate, one end of the limiting plate is fixedly set on the guide column support seat, and the other end extends along the first direction to form a second limiting portion, when the support member contacts the second limiting portion, the driving member stops driving the pressure head member to move along the first direction, so that the pressure head member moves to the first position.

[0027] Compared with the prior art, the beneficial effects of this application are:

[0028] The present application provides a lifting pressure head mechanism, which is used in a platelet analyzer, and includes a driving assembly, a pressure head component, and a sealing assembly corresponding to the pressure head component;

[0029] The driving assembly is capable of driving the pressing head component and the sealing assembly to move along a first direction so that the pressing head component is pressed toward the reagent kit of the platelet analyzer;

[0030] When the pressing head member moves to the first position, the pressing head member stops moving, and the driving assembly can drive the sealing assembly to move along the first direction, so that the sealing assembly presses against the pressing head member, so that the pressing head member moves to the second position and seals the reagent box;

[0031] When the pressure head component moves to the second position, the driving assembly can drive the sealing assembly to move along the second direction away from the pressure head component. When the sealing assembly and the pressure head component move to the first position, the driving assembly simultaneously drives the pressure head component and the sealing assembly to move along the second direction.

[0032] Specifically, the present application has a simple structure. The driving assembly can drive the pressing head component to press on the test kit, and can drive the sealing assembly to strengthen the sealing of the pressing head component on the test kit. After the first batch of platelet testing is completed, the driving assembly is used to drive the sealing assembly and the pressing head component to move in the second direction to prepare for the next platelet testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the structure of the lifting and lowering pressure head mechanism provided in Example 1 of the present application;

[0035] Figure 2 A schematic diagram of the structure of a pressure head component on a lifting pressure head mechanism provided in Example 1 of the present application;

[0036] Figure 3 A schematic diagram of the structure of a driving assembly on a lifting and lowering pressure head mechanism provided in Example 2 of the present application;

[0037] Figure 4 A schematic diagram of the structure of a sealing assembly on a lifting and lowering pressure head mechanism provided in Example 3 of the present application;

[0038] Figure 5 A schematic structural diagram of a first limit assembly on a lifting and lowering pressure head mechanism provided in Embodiment 4 of the present application;

[0039] Figure 6 A schematic diagram of the structure of a first position limiting assembly provided in Embodiment 4 of the present application;

[0040] Figure 7 A schematic diagram of the structure of a second limit assembly on a lifting and lowering pressure head mechanism provided in Example 5 of the present application;

[0041] Figure 8 This is a schematic diagram of the structure of the third limiting component provided in Example 6 of the present application.

[0042] In the figure: 100-driving assembly; 101-pressing head component; 103-first direction; 104-second direction; 105-supporting member; 106-fixing portion; 107-connecting portion; 108-abutting portion; 109-sealing ring; 110-driving member; 111-guide column; 112-guide block; 113-guide shaft; 114-elastic member; 115-clamping portion; 116-blocking member; 117-first limiting assembly; 118-first trigger member; 119-first optical coupler; 120-first limiting portion; 121-groove; 122-first limiting end face; 123-second limiting end face; 124-second limiting assembly; 125-second trigger member; 126-second optical coupler; 127-guide column supporting seat; 128-third limiting assembly; 129-limiting plate; 130-second limiting portion. DETAILED DESCRIPTION

[0043] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship described in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] Embodiment 1

[0047] See also Figure 1 and Figure 2The present application provides a lifting pressure head mechanism for a platelet analyzer, comprising a driving assembly 100, a pressure head component 101, and a sealing assembly corresponding to the pressure head component 101;

[0048] The driving assembly 100 can drive the pressing head component 101 and the sealing component to move along a first direction 103 (in this embodiment and the following embodiments, the first direction 103 is a vertical downward direction when the lifting pressing head mechanism is in a normal working state), so that the pressing head component 101 presses against the reagent kit of the platelet analyzer;

[0049] When the pressing head member 101 moves to the first position, that is, when the pressing head member 101 contacts the test kit of the platelet analyzer, the pressing head member 101 stops moving, and the driving assembly 100 can drive the sealing assembly to move along the first direction 103, so that the sealing assembly is pressed against the pressing head member 101, thereby causing the pressing head member 101 to move to the second position and seal the test kit; that is, the sealing assembly can further cause the pressing head member 101 to press the test kit tightly to ensure the sealing of the test kit.

[0050] When the pressure head component 101 moves to the second position, the driving assembly 100 can drive the sealing assembly to move along the second direction 104 away from the pressure head component 101 (in this embodiment and the following embodiments, the second direction 104 is the vertical upward direction when the lifting pressure head mechanism is in normal working state), and when the sealing assembly and the pressure head component 101 move to the first position, that is, the sealing assembly is separated from the pressure head component 101 at this time, the driving assembly 100 simultaneously drives the pressure head component 101 and the sealing assembly to move along the second direction 104.

[0051] In summary, the present application has a simple structure. The driving component 100 can drive the pressing head component 101 to press on the test kit, and can drive the sealing component to strengthen the sealing of the pressing head component 101 on the test kit. After the first batch of platelet testing is completed, the driving component 100 is used to drive the sealing component and the pressing head component 101 to move along the second direction 104 to prepare for the next platelet testing.

[0052] In this embodiment, in order to enhance the overall stability of the present application and the integrity of the connection, the present application also includes a support member 105; the pressing head member 101 and the sealing assembly are both arranged on the support member 105, and the pressing head member 101 is movably connected to the support member 105. In the actual working process, the pressing head member 101 is firstly in a free state. When the first batch of platelets needs to be tested, the driving assembly 100 is firstly used to drive the support member 105 to move in a vertical downward direction. The pressing head member 101 can also move in a vertical downward direction. When the pressing head member 101 moves to the first position, that is, when the pressing head member 101 contacts the test kit, the pressing head member 101 stops moving. At this time, the driving assembly 100 continues to work, and the driving assembly 100 can drive the sealing assembly to move toward the pressing head member 101.

[0053] Furthermore, the support member 105 is connected to the driving end of the driving assembly 100, and the driving end drives the support member 105 to move along the first direction 103 or the second direction 104, so that the pressure head member 101 and the sealing assembly can move along the first direction 103 or the second direction 104.

[0054] Preferably, the support member 105 is a support plate.

[0055] Combination Figure 2 As shown, in this embodiment, the pressing head member 101 includes a fixing portion 106, a connecting portion 107 and an abutting portion 108 connected in sequence; the fixing portion 106 can be mounted on the supporting member 105, the abutting portion 108 is arranged toward the reagent box, and the end of the abutting portion 108 can extend into the box opening of the reagent box to seal the reagent box, and the connecting portion 107 is arranged toward the sealing assembly.

[0056] Specifically, a mounting hole is provided on the support member 105, and the abutment portion 108 can pass through the mounting hole, and the fixing portion 106 is located above the support member 105, that is, when the pressing head component 101 is in a free state, the driving assembly 100 drives the pressing head component 101 to move in a vertical downward direction, and the fixing portion 106, the connecting portion 107 and the abutment portion 108 move downward at the same time, and when the abutment portion 108 abuts against the reagent box, the reagent box gives the abutment portion 108 a vertical upward force, that is, at this time, the fixing portion 106, the connecting portion 107 and the abutment portion 108 stop moving, and when the driving member 110 continues to drive, the support member 105 moves downward relative to the abutment portion 108.

[0057] Furthermore, in order to further improve the sealing performance between the abutting portion 108 and the reagent kit, a sealing ring 109 is sleeved on the end of the abutting portion 108. The sealing ring 109 is made of rubber. The sealing ring 109 is used to improve the sealing performance between the abutting portion 108 and the reagent kit.

[0058] Embodiment 2

[0059] The second embodiment is an improvement on the above embodiment. The technical contents disclosed in the above embodiment are not described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0060] See also Figure 3 In the optional solution of this embodiment, the driving assembly 100 includes a driving member 110 and a guide column 111;

[0061] The driving end of the driving member 110 is connected to the supporting member 105, and the supporting member 105 is sleeved on the guide column 111. The supporting member 105 and the sealing assembly can move along the first direction 103 or the second direction 104 on the guide column 111. The guiding effect of the supporting member 105 and the sealing assembly can be achieved by utilizing the guide column 111.

[0062] Preferably, the driving member 110 is a motor.

[0063] Embodiment 3

[0064] The third embodiment is an improvement on the above embodiment. The technical contents disclosed in the above embodiment are not described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the third embodiment.

[0065] See also Figure 4 The sealing assembly includes a guide block 112, a guide shaft 113 and an elastic member 114; the guide block 112 is preferably an inverted L-shaped structure, wherein one end of the guide column 111 is a sliding portion and the other end is a mounting portion, the guide block 112 is placed on the support member 105 and the sliding portion is sleeved on the guide column 111, and can move along the first direction 103 or the second direction 104 of the guide column 111.

[0066] Specifically, a mounting groove is provided on the mounting portion on the guide block 112 toward one side of the connecting portion 107; one end of the guide shaft 113 passes through the mounting portion on the guide block 112 and forms a clamping portion 115, and the other end of the guide shaft 113 is sleeved with a blocking member 116; the elastic member 114 is placed in the mounting groove, and both ends are respectively abutted against the clamping portion 115 and the guide block 112.

[0067] Preferably, the elastic member 114 is a spring.

[0068] When the pressing head member 101 is located at the first position, the driving end continues to drive the sealing assembly to move along the first direction 103 toward the pressing head member 101. Since the pressing head member 101 is in a stationary state when it is located at the first position, that is, when the sealing assembly moves toward the pressing head member 101 along the first direction 103, the pressing head member 101 will give the sealing assembly an upward force, that is, the elastic member 114 is compressed at this time; on the contrary, when the pressing head member 101 is located at the second position, when the driving end drives the sealing assembly to move along the second direction 104, the pressing head member 101 gradually separates from the sealing assembly, that is, the elastic member 114 is reset at this time.

[0069] Embodiment 4

[0070] This fourth embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment are not described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the fourth embodiment.

[0071] See also Figure 5 and Figure 6 As shown, the present application further includes a first limiting component 117, and the first limiting component 117 includes a first trigger 118 and a first optical coupler 119; the first optical coupler 119 is arranged on the support member 105, one end of the first trigger 118 is placed between the clamping portion 115 and the guide block 112, and the other end extends toward the first optical coupler 119 to form a first limiting portion 120; a groove 121 is formed on the first limiting portion 120, and both sides of the groove 121 are sequentially formed with a first limiting end face 122 and a second limiting end face 123 along the second direction 104;

[0072] In actual use, when the first limiting end face 122 triggers the first optical coupler 119, specifically, the first optical coupler 119 includes a signal receiving end and a signal transmitting end, and the signal receiving end is used to receive the signal of the signal transmitting end. When the first limiting end face 122 triggers the first optical coupler 119, that is, when the first limiting end face 122 is located between the signal receiving end and the signal transmitting end, the signal receiving end cannot receive the signal emitted by the signal transmitting end, that is, at this time, the driving member 110 stops driving the sealing assembly to move along the first direction 103, and the pressing head member 101 moves to the second position and seals the reagent box;

[0073] When the second limiting end face 123 triggers the first optical coupler 119, specifically, when the second limiting end face 123 triggers the first optical coupler 119, that is, when the second limiting end face 123 is located between the signal receiving end and the signal transmitting end, the signal receiving end cannot receive the signal emitted by the signal transmitting end, that is, at this time, the driving member 110 stops driving the sealing assembly to move along the second direction 104.

[0074] Embodiment 5

[0075] This fifth embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the fifth embodiment.

[0076] See also Figure 7 As shown, in an optional solution of this embodiment, a second limiter assembly 124 is further included, and the second limiter assembly 124 includes a second trigger 125 and a second optical coupler 126; the guide column 111 extends along the second direction 104 to form an extension portion, and the second optical coupler 126 is placed on the extension portion;

[0077] The second trigger member 125 is placed on the guide block 112. When the second trigger member 125 triggers the second optical coupler 126, the sealing assembly and the pressing head member 101 simultaneously stop moving along the second direction 104, so that the pressing head member 101 is reset to the initial position (the initial position here refers to the free state of the pressing head member and the sealing assembly before the first position) to prepare for testing the next batch of platelets.

[0078] In summary, the second limiting assembly 124 can return the pressing head member 101 and the sealing assembly to their original initial positions, which has a simple structure and is easy to control.

[0079] Embodiment 6

[0080] This sixth embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the sixth embodiment.

[0081] See also Figure 8 As shown, in an optional solution of this embodiment, a guide column support seat 127 is further included, and the guide column 111 is placed on the guide column support seat 127, and the guide column 111 extends in a vertical upward direction.

[0082] Specifically, it also includes a motor support frame, which is used to support the motor, and one end of the motor support frame is fixedly disposed on the guide column support seat 127.

[0083] In this embodiment, in order to ensure that the pressure head component 101 can stop moving at the first position, the present application also includes a third limiting assembly 128, and the third limiting assembly 128 includes a limiting plate 129, one end of the limiting plate 129 is fixedly arranged on the guide column support seat 127, and the other end extends along the first direction 103 to form a second limiting portion 130.

[0084] In actual use, when the support member 105 contacts the second limiting portion 130 , the driving member 110 stops driving the pressing head member 101 to move along the first direction 103 , so that the pressing head member 101 moves to the first position.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. A lifting and lowering pressure head mechanism for a platelet analyzer, characterized in that: It includes a driving assembly, a pressing head component and a sealing assembly corresponding to the pressing head component; The driving assembly is capable of driving the pressing head component and the sealing assembly to move along a first direction so that the pressing head component is pressed toward the reagent kit of the platelet analyzer; When the pressing head member moves to the first position, the pressing head member stops moving, and the driving assembly can drive the sealing assembly to move along the first direction, so that the sealing assembly presses against the pressing head member, so that the pressing head member moves to the second position and seals the reagent box; When the pressing head member moves to the second position, the driving assembly can drive the sealing assembly to move away from the pressing head member in the second direction, and when the sealing assembly and the pressing head member move to the first position, the driving assembly can simultaneously drive the pressing head member and the sealing assembly to move in the second direction, so that the pressing head member is separated from the reagent box; Also included is a support member; The pressure head component and the sealing assembly are both arranged on the support member, and the pressure head component is movably connected to the support member; The support member is connected to a driving end of the driving assembly, and the driving end can drive the support member to move along the first direction or the second direction, so that the pressure head member and the sealing assembly can move along the first direction or the second direction; The pressure head component includes a fixing portion, a connecting portion and an abutting portion connected in sequence; The fixing portion can be mounted on the supporting member, the abutting portion is arranged toward the reagent box, and the end of the abutting portion can extend into the box opening of the reagent box to seal the reagent box, and the connecting portion is arranged toward the sealing component; The driving assembly includes a driving member and a guide column; The driving end of the driving member is connected to the supporting member, the supporting member is sleeved on the guide column, and the supporting member and the sealing assembly can move along the first direction or the second direction on the guide column; The sealing assembly includes a guide block, a guide shaft and an elastic member; The guide block is arranged on the support member and sleeved on the guide column; a mounting groove is provided on the side of the guide block facing the connecting portion; one end of the guide shaft passes through the guide block and forms a clamping portion, and the other end of the guide shaft is sleeved with a blocking member; the elastic member is placed in the mounting groove, and the two ends thereof are respectively abutted against the clamping portion and the guide block; When the pressing head member is located at the first position and the driving end drives the sealing assembly to move along the first direction, the elastic member is compressed; when the pressing head member is located at the second position and the driving end drives the sealing assembly to move along the second direction, the elastic member is reset; It also includes a first limit assembly, which includes a first trigger and a first optical coupler; The first optical coupler is arranged on the supporting member, one end of the first trigger member is placed between the clamping portion and the guide block, and the other end of the first trigger member extends toward the first optical coupler to form a first limiting portion; A groove is formed on the first limiting portion, and a first limiting end surface and a second limiting end surface are sequentially formed on both sides of the groove along the second direction; When the pressing head component moves to the second position along the first direction, and the first limiting end surface is able to trigger the first optical coupler, the driving component stops driving; When the pressing head component moves to the first position along the second direction, and the second limit end surface triggers the first optical coupler, the driving component stops driving; It also includes a second limit assembly, the second limit assembly includes a second trigger and a second optical coupler; the guide column extends along the second direction to form an extension portion, and the second optical coupler is placed on the extension portion; The second triggering member is disposed on the guide block, and when the second triggering member triggers the second optical coupler, the driving member stops driving; It also includes a guide column support seat, and the guide column is placed on the guide column support seat; It also includes a third limiting assembly, which includes a limiting plate, one end of which is fixedly arranged on the guide column support seat, and the other end of which extends along the first direction to form a second limiting portion. When the support member contacts the second limiting portion, the driving member stops driving the pressure head component to move along the first direction, so that the pressure head component moves to the first position.

2. The lifting head mechanism according to claim 1, characterized in that: A sealing ring is sleeved on the end of the abutting portion.

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