Unthreaded hole sealing clamp

Abstract

The utility model discloses an unthreaded hole sealing clamp which comprises a first unthreaded hole sealing unit and a second unthreaded hole sealing unit. The first unthreaded hole sealing unit comprises a bearing hole plugging block and plugging silica gel and is further provided with a plurality of first sealing bolts, and the first sealing bolts penetrate out of the plugging silica gel; the second unthreaded hole sealing unit comprises a first pressing and expanding head and a second pressing and expanding head, the second pressing and expanding head is connected to the open end of the first pressing and expanding head in a sleeving mode, the second pressing and expanding head comprises an expanding head block, a second slope and an expanding head bottom which are coaxially connected, and the expanding head block extends into the first pressing and expanding head; according to the unthreaded hole sealing clamp, the first unthreaded hole sealing unit and the second unthreaded hole sealing unit are arranged, different structures are adopted, the end face of a sealing casting blank face hole and the end face of a machining face hole can be sealed at the same time, sealing is simple and stable, and then a good foundation is laid for follow-up leakage testing detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing detection technical field, concretely relates to a light hole sealing fixture. BACKGROUND

[0002] With the development of the light weight of the automobile, the light weight requirement of the part is higher and higher. The aluminum alloy shell type part in the gearbox increases. In order to prevent the gearbox from leaking in the running process, the aluminum alloy shell needs to be detected after being processed.

[0003] When the shell type part is in the sample and small batch stage, the output is low, and the product structure has not been solidified. When the leak detection is carried out at this stage, if the special airtight machine is purchased, the cost is higher, and the manual plugging is generally adopted to seal the shell type part. The sealing quality determines whether the part leak detection result is stable. There are some light holes in the shell type part, which need to be sealed. There are the following problems in the plugging process:

[0004] (1) if the end face of the light hole is a machining surface, the bolt is used to seal by fixing the silica gel plate on the hole end face. But the connection thread is easy to leak, which leads to unstable sealing

[0005] (2) if the hole end face is a casting blank surface, the surface is uneven, and the end face cannot be sealed. The light hole of this type is difficult to plug, easy to leak, and causes unstable leak detection result. SUMMARY

[0006] In view of the defects of the prior art, the purpose of the utility model is to provide a light hole sealing fixture, which solves the problem that the sealing device in the prior art is not suitable for sealing the casting blank hole end face and the machining hole end face at the same time.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme: a light hole sealing fixture, comprising a first light hole sealing unit and a second light hole sealing unit installed on one side of the first light hole sealing unit through a connecting plate.

[0008] The first light hole sealing unit comprises a bearing hole plugging block and a plugging silica gel installed on one side of the bearing hole plugging block, and a plurality of first sealing bolts are installed on the bearing hole plugging block, and the first sealing bolts pass through the plugging silica gel.

[0009] The second light hole sealing unit comprises a first pressure head installed on the connecting plate and a second pressure head sleeved on one side of the first pressure head, the first pressure head is a hollow cylindrical body with one end open, the second pressure head is sleeved on the open end of the first pressure head, and the outer edge of the open end of the first pressure head is chamfered to form a first slope.

[0010] The second pressure expansion head comprises coaxially connected expansion head block, second slope and expansion head bottom, the expansion head block and the expansion head bottom are both cylindrical, the diameter of the expansion head bottom is larger than that of the expansion head block, the second slope is circular truncated cone, and a sealing ring is sleeved on the second slope and contacts the first slope.

[0011] The expansion head block extends into the first pressure expansion head.

[0012] The second light hole sealing unit further comprises a second sealing bolt, and the second sealing bolt is connected with the expansion head block through the connecting plate and the first pressure expansion head.

[0013] The utility model further has the following technical features:

[0014] The first pressure expansion head comprises coaxially connected expansion head connecting plate and expansion head body, and further comprises expansion head block cavity, square cavity and bolt cavity which are sequentially coaxially and through in the expansion head connecting plate and the expansion head body.

[0015] The first slope is located at the end of the expansion head body away from the connecting plate.

[0016] The expansion head block cavity and the bolt cavity are both cylindrical, the square cavity is cylindrical with both sides being radially parallel and narrowing, and the square cavity is formed with limiting surfaces along the radial direction at both sides.

[0017] The diameters of the expansion head block cavity, the square cavity and the bolt cavity are sequentially reduced.

[0018] The expansion head block comprises sequentially coaxially connected first expansion head block and second expansion head block, and the first expansion head block is connected with the second slope.

[0019] The first expansion head block is cylindrical, the second expansion head block is cylindrical with both sides being radially parallel and narrowing, limiting surfaces are formed along the radial direction at both sides of the second expansion head block, and the second expansion head block extends into the square cavity and cooperates with the square cavity.

[0020] The expansion head block further comprises threaded hole which is formed in the first expansion head block and the second expansion head block, and the second sealing bolt is connected with the threaded hole through the bolt cavity.

[0021] The expansion head connecting plate is cylindrical with both sides being radially parallel and narrowing, and is installed in cooperation with the expansion head mounting groove formed on the connecting plate.

[0022] The bearing hole plugging block is disc-shaped, a plurality of bolt holes are formed along the circumferential surface of the bearing hole plugging block, the bolt hole comprises large end and small end, a step is formed between the large end and the small end, and the large end is away from the sealing silica gel side.

[0023] The first sealing bolt is installed in the bolt hole, and a sealing ring is installed between the first sealing bolt and the step.

[0024] The handle is installed on the side of the bearing hole blocking block away from the blocking silica gel.

[0025] The connecting plate is connected with the bearing hole blocking block through bolts.

[0026] Compared with the prior art, the utility model has the following technical effects:

[0027] (I) the utility model provides a kind of light hole sealing fixture, by setting first light hole sealing unit and second light hole sealing unit, using different structures, it can be realized simultaneously to sealing cast blank face hole end face and machining face hole end face, sealing is simple and stable, and then lay good foundation for subsequent leak detection.

[0028] (II) the utility model provides a kind of light hole sealing fixture, for the light hole feature in shell type parts, block stable, easy to operate, and low production cost.

[0029] (III) the utility model provides a kind of light hole sealing fixture, simple structure, convenient operation, safe and reliable, strong adaptability. DRAWINGS

[0030] Figure 1 It is the overall structure schematic diagram of a kind of light hole sealing fixture of the utility model.

[0031] Figure 2 It is the overhead structure schematic diagram of the utility model.

[0032] Figure 3 It is the section view schematic diagram of second light hole sealing unit.

[0033] Figure 4 It is the detail structure schematic diagram of second light hole sealing unit.

[0034] Figure 5 It is the angle schematic diagram of first slope and second slope.

[0035] Figure 6 It is the structure schematic diagram of first bulge head block.

[0036] Figure 7 It is the structure schematic diagram of connecting plate.

[0037] Figure 8 It is the structure schematic diagram of the blocked shell.

[0038] Figure 9 It is Figure 8 section view schematic diagram

[0039] Meaning of each label in drawing:

[0040] 1-First light hole sealing unit, 2-Second light hole sealing unit, 3-Connecting plate, 4-Sealing ring, 5-Bulb mounting groove, 6-Φ120 hole to be sealed, 7-Φ30 hole to be sealed, 8-Blocked housing.

[0041] 1-1-Bearing hole blocking block, 1-2-Blocking silica gel, 1-3-First sealing bolt, 1-4-Bolt hole, 1-5-Handle.

[0042] 2-1-First pressure bulb, 2-2-Second pressure bulb, 2-3-First slope, 2-4-Second sealing bolt.

[0043] 2-1-1-Bulb connecting plate, 2-1-2-Bulb body, 2-1-3-Bulb block cavity, 2-1-4-Square cavity, 2-1-5-Bolt cavity.

[0044] 2-2-1-Bulb block, 2-2-2-Second slope, 2-2-3-Bulb bottom.

[0045] 2-2-1-1-First bulb block, 2-2-1-2-Second bulb block.

[0046] The specific content of the utility model is further explained and described in detail in combination with the embodiments. DETAILED DESCRIPTION

[0047] All components in the utility model, if not specially stated, all adopt the components known in the prior art.

[0048] The specific embodiments of the utility model are given below, and it should be noted that the utility model is not limited to the following specific embodiments, and any equivalent transformation made on the basis of the technical solutions of the application falls within the protection scope of the utility model.

[0049] Example 1:

[0050] This embodiment gives a kind of light hole sealing fixture, as shown in 1-, including first light hole sealing unit 1 and the second light hole sealing unit 2 of being installed in the side of first light hole sealing unit 1 by connecting plate 3. Figure 4 The first light hole sealing unit 1 described includes bearing hole blocking block 1-1 and blocking silica gel 1-2 installed in the side of bearing hole blocking block 1-1, the bearing hole blocking block 1-1 is also installed with a plurality of first sealing bolt 1-3, the first sealing bolt 1-3 is worn out blocking silica gel 1-2.

[0051] The first light hole sealing unit 1 described includes bearing hole blocking block 1-1 and blocking silica gel 1-2 installed in the side of bearing hole blocking block 1-1, the bearing hole blocking block 1-1 is also installed with a plurality of first sealing bolt 1-3, the first sealing bolt 1-3 is worn out blocking silica gel 1-2.

[0052] The second light hole sealing unit 2 includes a first pressing head 2-1 installed on the connecting plate 3 and a second pressing head 2-2 sleeved on one side of the first pressing head 2-1. The first pressing head 2-1 is a hollow cylinder with one end open, and the second pressing head 2-2 is sleeved on the open end of the first pressing head 2-1. The outer edge of the open end of the first pressing head 2-1 is chamfered to form a first slope 2-3.

[0053] The second inflation head 2-2 includes a coaxially connected inflation head block 2-2-1, a second slope 2-2-2 and an inflation head bottom 2-2-3. The inflation head block 2-2-1 and the inflation head bottom 2-2-3 are both cylindrical, and the diameter of the inflation head bottom 2-2-3 is larger than the diameter of the inflation head block 2-2-1. The second slope 2-2-2 is a truncated cone. A sealing ring 4 is also sleeved on the second slope 2-2-2, and the sealing ring 4 is in contact with the first slope 2-3.

[0054] The expanding head block 2-2-1 extends into the first expanding head 2-1.

[0055] The second light hole sealing unit 2 further includes a second sealing bolt 2-4, which passes through the connecting plate 3 and the first expanding head 2-1 and is connected to the expanding head block 2-2-1.

[0056] The second sealing bolt 2-4 can drive the expansion block 2-2-1 to move.

[0057] like Figure 1 As shown, during sealing, the sealing silicone 1-2 contacts the end face of the Φ120 hole 6 to be sealed, the bearing hole sealing block 1-1 is pressed on the sealing silicone 1-2, and the first sealing bolt 1-3 connects the bearing hole sealing block 1-1 and the sealing silicone 1-2 with the blocked shell 8. By twisting the first sealing bolt 1-3, the sealing silicone 1-2 is clamped and deformed to achieve the sealing of the Φ120 hole 6 to be sealed.

[0058] The first sealing bolts 1-3 are M10 bolts.

[0059] like Figure 2 As shown, when sealing, the second sealing bolt 2-4 is screwed, the second expanding head 2-2 moves upward, the sealing ring 4 contacts the first expanding head 2-1, and then the inner hole of the sealing ring 4 is expanded along the 130° slope structure, and the outer circle also increases accordingly. The outer circle of the sealing ring 4 undergoes plastic deformation and fits tightly with the inner side surface of the Φ30 hole 7 to be sealed, thereby achieving sealing of the Φ30 hole 7 to be sealed.

[0060] The second sealing bolts 2-4 are M10 bolts.

[0061] The sealing ring 4 adopts the specification of Φ20×3.55G.

[0062] As a preferred embodiment of the present application:

[0063] As shown in Figure 4 The first pressure head 2-1 includes coaxially connected head connector plate 2-1-1 and head body 2-1-2, and further includes head block cavity 2-1-3, square cavity 2-1-4 and bolt cavity 2-1-5 which are sequentially coaxially provided in head connector plate 2-1-1 and head body 2-1-2.

[0064] The first slope 2-3 is located at the end of head body 2-1-2 away from the connector plate 3.

[0065] The head block cavity 2-1-3 and the bolt cavity 2-1-5 are both cylindrical, and the square cavity 2-1-4 is a cylindrical shape with both sides narrowing radially, and the square cavity 2-1-4 forms a limiting surface along the radial direction on both sides.

[0066] The diameters of the head block cavity 2-1-3, the square cavity 2-1-4 and the bolt cavity 2-1-5 decrease sequentially.

[0067] As a preferred embodiment of the present application:

[0068] The head block 2-2-1 includes first head block 2-2-1-1 and second head block 2-2-1-2 which are sequentially coaxially connected, and the first head block 2-2-1-1 is connected with the second slope 2-2-2.

[0069] As shown in Figure 6 The first head block 2-2-1-1 is cylindrical, and the second head block 2-2-1-2 is a cylindrical shape with both sides narrowing radially, and the second head block 2-2-1-2 forms a limiting surface along the radial direction on both sides, and the second head block 2-2-1-2 extends into the square cavity 2-1-4 and cooperates with the square cavity 2-1-4.

[0070] The head block 2-2-1 further includes a threaded hole provided in the first head block 2-2-1-1 and the second head block 2-2-1-2, and the second sealing bolt 2-4 is connected with the threaded hole through the bolt cavity 2-1-5.

[0071] The first head block 2-2-1-1 of the second pressure head 2-2 is a cylindrical shape with both sides narrowing radially, which is similar to a square block structure, and the square cavity 2-1-4 is a cylindrical shape with both sides narrowing radially, which is similar in structure to the first head block 2-2-1-1. The first head block 2-2-1-1 is inserted into the square cavity 2-1-4, effectively preventing the second pressure head 2-2 from rotating during work, and ensuring the stability of the seal.

[0072] As a preferred embodiment of the present application:

[0073] The rising head connecting plate 2-1-1 is a cylinder with two sides narrowing radially, which is matched with the rising head mounting groove 5 on the connecting plate 3.

[0074] The rising head connecting plate 2-1-1 is designed with a square structure with two sides narrowing radially, and the connecting plate 3 is designed with a square rising head mounting groove 5, the square structure is matched with the square rising head mounting groove 5, preventing the first pressure rising head 2-1 from rotating during work, and ensuring the stability of the seal.

[0075] As a preferred embodiment of the present application:

[0076] The bearing hole plugging block 1-1 is disc-shaped, and a plurality of bolt holes 1-4 are formed in the circumferential direction of the surface thereof, the bolt hole 1-4 includes a large end and a small end, and a step is formed between the large end and the small end, and the large end is away from the side of the plugging silica gel 1-2.

[0077] The first sealing bolt 1-3 is installed in the bolt hole 1-4, and a sealing ring 4 is installed between the first sealing bolt 1-3 and the step.

[0078] The side of the bearing hole plugging block 1-1 away from the plugging silica gel 1-2 is also provided with a handle 1-5.

[0079] As a preferred embodiment of the present application:

[0080] The connecting plate 3 is connected to the bearing hole plugging block 1-1 by bolts.

[0081] The second light hole sealing unit 2 is fixed to the bearing hole plugging block 1-1 by the connecting plate 3, preventing the Φ30 hole 7 to be sealed from being pulled out of the Φ30 hole 7 to be sealed during leak detection.

[0082] As shown in Figure 1 , Figure 8 and Figure 9 , the specific operation steps of the present application are as follows:

[0083] ① Place the light hole sealing clamp on the sealed shell 8.

[0084] ② The plugging silica gel 1-2 on one side of the bearing hole plugging block 1-1 is placed on the end surface of the Φ120 hole 6 to be sealed, and the second light hole sealing unit 2 is placed in the Φ30 hole 7 to be sealed.

[0085] ③ Lock the six first sealing bolts 1-3 to achieve sealing of the Φ120 hole 6 to be sealed.

[0086] ④ Lock the second sealing bolt 2-4 to achieve sealing of the Φ30 hole 7 to be sealed.

[0087] ⑤ Leak detection is carried out.

[0088] ⑥ Leak detection is completed, and the first sealing bolt 1-3 and the first sealing bolt 1-3 are loosened.

[0089] ⑦ The light hole sealing fixture is taken off from the plugged shell 8.

[0090] End.

[0091] The beneficial effects of the embodiment are: first, the plugging silica gel is used to plug the light hole end face, the M10 sealing bolt + O-ring is used to plug the threaded hole, and the slope expansion mechanism + O-ring is used to plug the light hole diameter, so that the sealing stability is ensured. Second, the operation is convenient, and the labor intensity is reduced. Third, the standard O-ring is used for plugging, and the cost is low.

[0092] The above technical scheme is only a relatively optimal specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can think of changes or replacements within the technical range disclosed by the utility model without creative labor, which is covered in the protection scope of the utility model.

Claims

1. A light hole sealing fixture, characterized in that: It comprises a first light hole sealing unit (1) and a second light hole sealing unit (2) installed on one side of the first light hole sealing unit (1) via a connecting plate (3); The first light hole sealing unit (1) comprises a bearing hole sealing block (1-1) and a sealing silica gel (1-2) mounted on one side of the bearing hole sealing block (1-1); a plurality of first sealing bolts (1-3) are also mounted on the bearing hole sealing block (1-1); the first sealing bolts (1-3) pass through the sealing silica gel (1-2); The second light hole sealing unit (2) comprises a first pressing head (2-1) mounted on the connecting plate (3) and a second pressing head (2-2) sleeved on one side of the first pressing head (2-1); the first pressing head (2-1) is in the shape of a hollow cylinder with one end open; the second pressing head (2-2) sleeved on the open end of the first pressing head (2-1); the outer edge of the open end of the first pressing head (2-1) is chamfered to form a first slope (2-3); The second pressure-inflating head (2-2) comprises a coaxially connected inflation head block (2-2-1), a second slope (2-2-2) and an inflation head bottom (2-2-3); the inflation head block (2-2-1) and the inflation head bottom (2-2-3) are both cylindrical; the diameter of the inflation head bottom (2-2-3) is larger than the diameter of the inflation head block (2-2-1); the second slope (2-2-2) is a truncated cone; a sealing ring (4) is further sleeved on the second slope (2-2-2); and the sealing ring (4) is in contact with the first slope (2-3); The expanding head block (2-2-1) extends into the first expanding head (2-1); The second light hole sealing unit (2) further comprises a second sealing bolt (2-4), and the second sealing bolt (2-4) passes through the connecting plate (3) and the first expanding head (2-1) and is connected to the expanding head block (2-2-1).

2. The light hole sealing fixture according to claim 1, characterized in that: The first expanding head (2-1) comprises a coaxially connected expanding head connecting plate (2-1-1) and an expanding head body (2-1-2), and the first expanding head (2-1) further comprises an expanding head block cavity (2-1-3), a square cavity (2-1-4) and a bolt cavity (2-1-5) coaxially penetrating the expanding head connecting plate (2-1-1) and the expanding head body (2-1-2). The first slope (2-3) is located at one end of the expanding head body (2-1-2) facing away from the connecting plate (3); The expanding head block cavity (2-1-3) and the bolt cavity (2-1-5) are both cylindrical, and the square cavity (2-1-4) is cylindrical with both sides narrowed in parallel along the radial direction. Both sides of the square cavity (2-1-4) form limiting surfaces along the radial direction. The diameters of the expanding head block cavity (2-1-3), the square cavity (2-1-4) and the bolt cavity (2-1-5) decrease in sequence.

3. The light hole sealing fixture according to claim 2, characterized in that: The expanding head block (2-2-1) comprises a first expanding head block (2-2-1-1) and a second expanding head block (2-2-1-2) which are coaxially connected in sequence, and the first expanding head block (2-2-1-1) is connected to the second slope (2-2-2); The first expanding head block (2-2-1-1) is cylindrical, the second expanding head block (2-2-1-2) is cylindrical with two sides radially narrowed in parallel, limiting surfaces are formed on both sides of the second expanding head block (2-2-1-2) along the radial direction, and the second expanding head block (2-2-1-2) extends into the square cavity (2-1-4) and cooperates with the square cavity (2-1-4); The expanding head block (2-2-1) further comprises threaded holes provided in the first expanding head block (2-2-1-1) and the second expanding head block (2-2-1-2), and the second sealing bolt (2-4) passes through the bolt cavity (2-1-5) and is connected to the threaded holes.

4. The light hole sealing fixture according to claim 2, characterized in that: The expanding head connecting plate (2-1-1) is in the shape of a cylinder with two sides radially narrowed in parallel, and is installed in conjunction with the expanding head installation groove (5) provided on the connecting plate (3).

5. The light hole sealing fixture according to claim 1, characterized in that: The bearing hole blocking block (1-1) is disc-shaped and has a plurality of bolt holes (1-4) formed along the circumference of its surface. The bolt holes (1-4) include a large end and a small end, a step is formed between the large end and the small end, and the large end faces away from the side of the blocking silica gel (1-2). The first sealing bolt (1-3) is installed in the bolt hole (1-4), and a sealing ring (4) is installed between the first sealing bolt (1-3) and the step; A handle (1-5) is also installed on the side of the bearing hole blocking block (1-1) facing away from the blocking silica gel (1-2).

6. The light hole sealing fixture according to claim 1, characterized in that: The connecting plate (3) is connected to the bearing hole blocking block (1-1) via bolts.

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