External gas detection structure for oil cylinder detection

Abstract

The utility model relates to the technical field of gas detection, and provides an external gas detection structure for oil cylinder detection, which comprises a gas detection seat provided with a cavity, the cavity is provided with a gas outlet hole and a gas inlet hole, the inner wall of the cavity is provided with a first sealing part, the gas outlet hole and the gas inlet hole are respectively positioned on two sides of the first sealing part, and a gas detection core is arranged in the cavity in a sliding manner. The gas detection core is provided with a first sealing part and an extending part, the extending part extends to the outside of the gas detection seat, the gas detection core is further provided with a second sealing part, after the gas detection core slides, the first sealing part and the second sealing part abut against each other or cancel the abutting, the gas outlet hole and the gas inlet hole are communicated when the abutting is canceled, and the gas outlet hole and the gas inlet hole are separated when the abutting is carried out. By means of the technical scheme, the problems that an existing accessory is single in function, difficult to effectively detect various conditions, large in occupied area and inconvenient to use are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, and in particular to an external gas detection structure for oil cylinder detection. Background Art

[0002] When using a machine tool to process a workpiece, a clamp is required to clamp and fix the workpiece. An airtightness detection accessory is required when the clamp is in use and during factory debugging to detect whether the cylinder clamp can clamp or release the workpiece normally. In the actual production process, the cylinder clamp may not clamp the workpiece accurately due to a malfunction. However, since the existing auxiliary parts have a single function, it is difficult to effectively detect multiple situations, and they occupy a large area and are inconvenient to use. Utility Model Content

[0003] The utility model provides an external gas detection structure for oil cylinder detection, which solves the problems that the existing auxiliary parts have single functions, are difficult to effectively detect various situations, occupy a large area, and are inconvenient to use.

[0004] The technical solution of the utility model is as follows: an external air inspection structure for oil cylinder inspection, comprising: an air inspection seat, having a cavity, the cavity having an air outlet and an air inlet, the inner wall of the cavity having a first sealing portion, the air outlet and the air inlet are respectively located on both sides of the first sealing portion, an air inspection core, the air inspection core is slidably arranged in the cavity, and has an extension portion, the extension portion extends to the outside of the air inspection seat, the air inspection core also has a second sealing portion, after the air inspection core slides, the first sealing portion abuts against or cancels the abutment with the second sealing portion, and when the abutment is canceled, the air outlet and the air inlet are connected, and when abutting, the air outlet and the air inlet are separated.

[0005] Optionally, it further comprises: an elastic member, one end of which is arranged in the cavity, and the other end of which is arranged on the gas inspection core, for providing a force in the opposite direction of the cylinder pressure plate abutting against the gas inspection core.

[0006] Optionally, there is a gap between the peripheral side of the second sealing portion and the inner wall of the cavity.

[0007] Optionally, the first sealing portion and the gas inspection seat are provided separately, the first sealing portion is a sealing ring, and the inner diameter of the first sealing portion is smaller than the inner diameter of the cavity.

[0008] Optionally, the air inspection core has a ventilation portion, the diameter of the ventilation portion is smaller than the diameter of the second sealing portion, the ventilation portion is located on the side of the second sealing portion away from the air inlet, the two sides of the ventilation portion respectively have a first limiting portion and a second limiting portion, and also include a limiting member, the limiting member is arranged on the air inspection seat, after the air inspection core moves, the limiting member abuts against the first limiting portion or the second limiting portion.

[0009] Optionally, there is a gap between the limiting member and the vent portion.

[0010] Optionally, the air inspection core has a connecting portion, which is located at one end of the air inspection core close to the air inlet, and one end of the elastic member is arranged on the connecting portion, and the connecting portion, the first limiting portion and the second limiting portion have an abutting surface, and the abutting surface is used to abut with the first sealing portion.

[0011] Optionally, the gas inspection core has a groove, the groove is arranged on the connecting part, and the groove faces the air inlet.

[0012] Optionally, the gas inspection seat has a threaded portion, and the gas inspection seat is used to be connected to the oil cylinder through the threaded portion.

[0013] Optionally, the gas inspection seat has an inner mounting portion and an outer mounting portion, the inner mounting portion is arranged at the bottom of the cavity, and the outer mounting portion is arranged outside the gas inspection seat.

[0014] The working principle and beneficial effects of the utility model are:

[0015] In the utility model, the air inspection seat can be installed on the cylinder mounting seat, and the extended part of the air inspection core abuts against the cylinder pressure plate. When the cylinder clamp is clamped, the cylinder pressure plate presses the air inspection core downward, and the air inspection core slides in the cavity, so the connection state of the air inlet and the air outlet can be changed, so that the clamping state of the cylinder clamp can be detected through the connection state, and various fault states can be detected, with small space occupation, easy use, and improved detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model (the relationship between the position of the oil cylinder and the oil cylinder pressure plate);

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0019] Figure 3This is a schematic diagram of the structure of the gas inspection seat and the gas inspection core of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the gas inspection core of the utility model;

[0021] Figure 5 It is a cross-sectional structural diagram of the gas inspection seat and the gas inspection core of the utility model structure (the gas inspection core is in the middle stroke);

[0022] Figure 6 It is a cross-sectional structural diagram of the gas inspection seat and the gas inspection core of the utility model (the gas inspection core is in the upper stroke);

[0023] Figure 7 It is a cross-sectional structural diagram of the gas inspection seat and the gas inspection core of the utility model structure (the gas inspection core is in the lower stroke);

[0024] In the figure: 1. gas inspection seat; 101. cavity; 102. air outlet; 103. air inlet; 104. first sealing part; 105. threaded part; 106. inner mounting part; 107. outer mounting part; 2. gas inspection core; 201. extension part; 202. second sealing part; 203. ventilation part; 204. first limiting part; 205. second limiting part; 206. connecting part; 207. abutting surface; 208. groove; 3. elastic member; 4. limiting member; 5. cylinder pressure plate. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0026] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0027] In this article, 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 utility model can be understood according to specific circumstances.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] Reference Figure 1 to Figure 7 , an external gas inspection structure for oil cylinder inspection is proposed, comprising: a gas inspection seat 1, having a cavity 101, the cavity 101 having an air outlet 102 and an air inlet 103, the inner wall of the cavity 101 having a first sealing portion 104, the air outlet 102 and the air inlet 103 are respectively located on both sides of the first sealing portion 104, a gas inspection core 2, the gas inspection core 2 is slidably arranged in the cavity 101, and has an extension portion 201, the extension portion 201 extends to the outside of the gas inspection seat 1, the gas inspection core 2 also has a second sealing portion 202, after the gas inspection core 2 slides, the first sealing portion 104 and the second sealing portion 202 are abutted or canceled, and when the abutment is canceled, the air outlet 102 and the air inlet 103 are connected, and when the abutment is abutted, the air outlet 102 and the air inlet 103 are separated.

[0030] In this embodiment, the gas inspection seat 1 can be installed on the oil cylinder, and the installation position includes the oil cylinder mounting seat, the oil cylinder body or the oil cylinder screw mounting position, etc. The extension part 201 extends out of the cavity 101, and the oil cylinder pressure plate 5 can be abutted against the extension part 201. When the oil cylinder clamp clamps the workpiece, the oil cylinder pressure plate 5 moves synchronously, and drives the gas inspection core 2 to move in the cavity 101 by abutting with the extension part 201. When the moving distance of the oil cylinder pressure plate 5 changes, the moving distance of the gas inspection core 2 will also change accordingly. When the gas inspection core 2 moves different distances, the sealing abutment of the second sealing part 202 and the first sealing part 104 can be respectively corresponded or the sealing abutment can be cancelled, that is, the air outlet 102 and the inlet 104 are realized. The air hole 103 is connected or disconnected. The air inlet 103 can be connected to the air inspection air path. After the air outlet 102 and the air inlet 103 are disconnected, the cylinder clamp is in the normal clamping state. At this time, the gas flow of the air inspection air path connected to the air inlet 103 is in a closed state. When the cylinder clamp does not clamp the workpiece, or the workpiece is not installed on the workstation, and the cylinder clamp is empty, it will cause the movement distance of the cylinder pressure plate 5 to change, and the movement distance of the air inspection core 2 to change, thereby causing the first sealing part 104 and the second sealing part 202 to cancel the sealing abutment, and the air inlet 103 and the air outlet 102 are connected. The gas flow rate of the air inspection air path connected to the air inlet 103 is increased, and a safety alarm device can be further set to alarm. The detection range is large, and different fault states can be detected. It occupies a small area, is easy to use, and improves the detection efficiency;

[0031] As a possible technical solution, the first sealing portion 104 and the interior of the cavity 101 can be integrally or separately arranged. Preferably, the first sealing portion 104 is a sealing ring.

[0032] Furthermore, it also includes: an elastic member 3 , one end of which is arranged in the cavity 101 , and the other end is arranged on the gas inspection core 2 , for providing a force in the opposite direction of the cylinder pressure plate 5 abutting against the gas inspection core 2 .

[0033] In this embodiment, the cylinder pressure plate 5 presses the extension part 201 to drive the gas inspection core 2 to move. When the cylinder pressure plate 5 moves in the opposite direction, the elastic force of the elastic member 3 pushes the gas inspection core 2 to move with the cylinder pressure plate 5. Preferably, the elastic member 3 is a compression spring.

[0034] Furthermore, there is a gap between the peripheral side of the second sealing portion 202 and the inner wall of the cavity 101 .

[0035] Regarding the design of the second sealing portion 202 , this embodiment points out that there is a gap between its circumference and the inner wall of the cavity 101 . Such a design ensures the sealing effect while not hindering the normal sliding of the gas inspection core 2 .

[0036] Furthermore, the first sealing portion 104 is provided separately from the gas inspection seat 1 , the first sealing portion 104 is a sealing ring, and the inner diameter of the first sealing portion 104 is smaller than the inner diameter of the cavity 101 .

[0037] In the present embodiment, with respect to the first sealing portion 104, the present embodiment illustrates that it is separately arranged from the gas inspection seat 1. The first sealing portion 104 and the elastic member 3 can be installed and placed in the cavity 101 in sequence, and the gas inspection core 2 can be further placed. The specific form of the first sealing portion 104 is a sealing ring. Since there is a gap between the peripheral side of the second sealing portion 202 and the inner wall of the cavity 101, the inner diameter of the sealing ring is smaller than the inner diameter of the cavity 101, ensuring that the second sealing portion 202 and the sealing ring can effectively seal and abut while the gas inspection core 2 slides smoothly, thereby effectively sealing the air outlet 102 and the air inlet 103.

[0038] Furthermore, the air inspection core 2 has a ventilation portion 203, the diameter of the ventilation portion 203 is smaller than the diameter of the second sealing portion 202, the ventilation portion 203 is located on the side of the second sealing portion 202 away from the air inlet 103, and the two sides of the ventilation portion 203 respectively have a first limiting portion 204 and a second limiting portion 205, and also include a limiting member 4, the limiting member 4 is arranged on the air inspection seat 1, after the air inspection core 2 moves, the limiting member 4 abuts against the first limiting portion 204 or the second limiting portion 205.

[0039] In this embodiment, the limit member 4 is arranged on the gas inspection seat 1, and is used to limit the moving distance of the gas inspection core 2 within an appropriate range. Specifically, the cylinder pressure plate 5 pushes the protruding part 201 to drive the gas inspection core 2 to move toward the air inlet hole 103 to the bottom of the cavity 101. At this time, the first sealing part 104 and the second sealing part 202 cancel the sealing abutment, and the limit member 4 abuts against the second limiting part 205 to limit the further movement of the gas inspection core 2; when the cylinder pressure plate 5 cancels the push, the elastic member 3 pushes the gas inspection core 2 away from the air inlet hole 103 to the upper part of the cavity 101. At this time, the first sealing part 104 and the second sealing part 202 cancel the sealing abutment, and the limit member 4 abuts against the first limiting part 204 to limit the further movement of the gas inspection core 2; preferably, the limit member 4 is a top screw, and the axial side of the top screw abuts against the first limiting part 204 or the second limiting part 205.

[0040] Furthermore, there is a gap between the limiting member 4 and the vent 203 .

[0041] In this embodiment, the limiting member 4 is preferably a top screw to ensure that when the limiting member is in effect, the end of the top screw does not produce abutment friction with the vent 203, so that the gas inspection core 2 can move smoothly.

[0042] Furthermore, the air inspection core 2 has a connecting portion 206, which is located at one end of the air inspection core 2 close to the air inlet 103, and one end of the elastic member 3 is arranged on the connecting portion 206. The connecting portion 206, the first limiting portion 204 and the second limiting portion 205 have an abutting surface 207, and the abutting surface 207 is used to abut with the first sealing portion 104.

[0043] In this embodiment, preferably, the first sealing portion 104 is a rubber sealing ring, and the abutting surface 207 is an inclined surface, an arc surface, etc., so that during the movement of the air inspection core 2, the abutting surface 207 will not damage the rubber sealing ring and affect the subsequent sealing effect.

[0044] Furthermore, the gas inspection core 2 has a groove 208 , and the groove 208 is disposed on the connecting portion 206 , and the groove 208 faces the gas inlet hole 103 .

[0045] In this embodiment, in order to increase the gas flow rate, a groove 208 is designed. The groove 208 can avoid the first sealing part 104 and make it more sensitive to gas leakage.

[0046] Furthermore, the gas inspection seat 1 has a threaded portion 105 , and the gas inspection seat 1 is used to be connected to the oil cylinder through the threaded portion 105 .

[0047] In this embodiment, the connection between the gas detection seat 1 and the oil cylinder is described in detail. The gas detection seat 1 is designed with a threaded portion 105 in its structure. The threaded portion 105 is located at a proper position of the gas detection seat 1, usually selected on the outer diameter of the gas detection seat 1, so as to cooperate with the internal threaded hole of the oil cylinder.

[0048] The specific connection operation is as follows: when the gas inspection seat 1 needs to be connected to the oil cylinder, first align the threaded portion 105 of the gas inspection seat 1 with the preset internal thread hole on the oil cylinder. Use appropriate tools, such as a wrench or a screwdriver, to rotate the gas inspection seat 1 in a clockwise direction, so that it is gradually screwed into the internal thread hole of the oil cylinder until the gas inspection seat 1 is tightly connected to the oil cylinder and reaches the predetermined tightening torque. Through this threaded connection method, not only is the good sealing between the gas inspection structure and the oil cylinder guaranteed, but it also ensures the convenience of installation and the feasibility of disassembly, which is convenient for later maintenance and repair.

[0049] Furthermore, the gas inspection seat 1 has an inner mounting portion 106 and an outer mounting portion 107 , the inner mounting portion 106 is disposed at the bottom of the cavity 101 , and the outer mounting portion 107 is disposed outside the gas inspection seat 1 .

[0050] In this embodiment, as a preference, the inner mounting portion 106 is a polygonal groove, such as an inner hexagon, an inner pentagon, etc., and the outer mounting portion 107 is the same, except that the outer mounting portion 107 is installed on one side of the outside of the gas inspection seat 1, and is located on both sides of the gas inspection seat 1 with the threaded portion 105. The settings of the inner mounting portion 106 and the outer mounting portion 107 can be adapted to different space requirements and are convenient for disassembly and assembly.

[0051] Working principle: Clamping (pressing) state: After being separated by the air outlet 102 and the air inlet 103, the cylinder clamp is in the normal clamping state. At this time, the cylinder pressure plate 5 is pressed as required, the second sealing part 202 is sealed against the first sealing part 104, and the gas flow in the air inspection air path connected to the air inlet 103 is in a closed state. After the gas enters through the air inlet 103, it cannot be discharged from the air outlet 102, thus forming a seal.

[0052] Relaxed state (when the cylinder clamp does not clamp the workpiece): the cylinder pressure plate 5 is lifted, the gas inspection core 2 slides away from the air inlet hole 103, the first sealing part 104 and the second sealing part 202 cancel the sealing abutment, the gas enters through the air inlet hole 103, and is discharged at the air outlet hole 102.

[0053] Over-clamping (pressing) state: the cylinder pressure plate 5 is not pressed as required and exceeds the specified pressing distance. The gas inspection core 2 slides close to the air inlet 103, and the connecting part 206 contacts the bottom of the cavity 101. After the gas enters through the air inlet 103, it passes through the groove 208 and the gap between the second sealing part 202 and the cavity 101, and is discharged from the air outlet 102.

[0054] As long as the gas can enter from the air inlet 103 and be discharged from the air outlet 102, it will be regarded as the cylinder clamp is not properly tightened, thereby causing an external alarm.

[0055] 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 external gas detection structure for oil cylinder detection, characterized in that: include: A gas inspection seat (1) comprises a cavity (101), the cavity (101) comprises an air outlet (102) and an air inlet (103), the inner wall of the cavity (101) comprises a first sealing portion (104), the air outlet (102) and the air inlet (103) are respectively located on two sides of the first sealing portion (104), A gas inspection core (2), wherein the gas inspection core (2) is slidably arranged in the cavity (101) and has an extension portion (201), wherein the extension portion (201) extends to the outside of the gas inspection seat (1), and the gas inspection core (2) also has a second sealing portion (202). After the gas inspection core (2) slides, the first sealing portion (104) abuts against or cancels the abutment with the second sealing portion (202), and when the abutment is canceled, the gas outlet (102) and the gas inlet (103) are connected, and when the abutment is abutted, the gas outlet (102) and the gas inlet (103) are separated.

2. The external gas detection structure for oil cylinder detection according to claim 1 is characterized in that: Also includes: An elastic member (3), one end of which is arranged in the cavity (101) and the other end of which is arranged on the gas inspection core (2), and is used to provide a force in the opposite direction of the oil cylinder pressure plate (5) abutting against the gas inspection core (2).

3. The external gas detection structure for oil cylinder detection according to claim 1 is characterized in that: There is a gap between the peripheral side of the second sealing portion (202) and the inner wall of the cavity (101).

4. The external gas detection structure for oil cylinder detection according to claim 1 is characterized in that: The first sealing part (104) is arranged separately from the gas inspection seat (1); the first sealing part (104) is a sealing ring; and the inner diameter of the first sealing part (104) is smaller than the inner diameter of the cavity (101).

5. The external gas detection structure for oil cylinder detection according to claim 2 is characterized in that: The gas inspection core (2) comprises a venting portion (203), the diameter of the venting portion (203) being smaller than the diameter of the second sealing portion (202), the venting portion (203) being located on a side of the second sealing portion (202) away from the gas inlet hole (103), the two sides of the venting portion (203) respectively comprising a first limiting portion (204) and a second limiting portion (205), and further comprising a limiting member (4), the limiting member (4) being arranged on the gas inspection seat (1), and after the gas inspection core (2) moves, the limiting member (4) abuts against the first limiting portion (204) or the second limiting portion (205).

6. The external gas detection structure for oil cylinder detection according to claim 5, characterized in that: There is a gap between the limiting member (4) and the vent (203).

7. The external gas detection structure for oil cylinder detection according to claim 5, characterized in that: The gas detection core (2) has a connecting portion (206), the connecting portion (206) is located at one end of the gas detection core (2) close to the gas inlet hole (103), one end of the elastic member (3) is arranged on the connecting portion (206), the connecting portion (206), the first limiting portion (204) and the second limiting portion (205) have a contact surface (207), and the contact surface (207) is used to contact the first sealing portion (104).

8. The external gas detection structure for oil cylinder detection according to claim 7, characterized in that: The gas inspection core (2) has a groove (208), the groove (208) is arranged on the connecting portion (206), and the groove (208) faces the gas inlet hole (103).

9. The external gas detection structure for oil cylinder detection according to claim 1, characterized in that: The gas inspection seat (1) has a threaded portion (105), and the gas inspection seat (1) is used to be connected to the oil cylinder via the threaded portion (105).

10. The external gas detection structure for oil cylinder detection according to claim 1, characterized in that: The gas inspection seat (1) comprises an inner mounting portion (106) and an outer mounting portion (107); the inner mounting portion (106) is arranged at the bottom of the cavity (101), and the outer mounting portion (107) is arranged outside the gas inspection seat (1).

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