A positioning fixture for oil rail distribution pipe

Abstract

The utility model provides an oil rail distribution pipe positioning fixture, comprising a fixed bottom plate, the upper end of which is fixedly connected with a pipe end limiting base block; further comprising a side push moving block, the side push moving block is connected with a side push cylinder driving the side push moving block to move back and forth toward the pipe end limiting base block; the pipe end limiting base block and the side push moving block are distributed left and right, and a plurality of clamping blocks are arranged between the pipe end limiting base block and the side push moving block; the lower end of the clamping block is connected with a clamping cylinder driving the clamping block to move up and down; the front and rear end faces of the clamping block are both inclined surfaces; a pipe wall limiting base block is respectively arranged on the front side of the front end face of the clamping block and the rear side of the clamping block; the pipe wall limiting base block is fixedly connected to the upper end of the fixed bottom plate. The positioning fixture of the utility model is used to position and clamp the oil rail distribution pipe, which can cause fewer scratches on the pipe wall of the oil rail distribution pipe, is simple to operate, and has a stable clamping effect.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile oil rail processing and manufacturing, in particular to an oil rail distribution pipe positioning fixture. Background Art

[0002] During the processing and manufacturing of automobile oil rails, we need to drill several oil holes at specific positions on the oil rail distribution pipe body. The general steps are: first use a positioning fixture to fix the straight pipe of the distribution pipe so that it cannot move, especially cannot rotate in the radial direction, and then use a tool to drill holes on the oil rail distribution straight pipe.

[0003] The existing positioning fixture generally includes a bottom plate, a pressing component, and a support block disposed at the upper end of the bottom plate; the support block is provided with a positioning groove, and the pressing component generally includes an inverted U-shaped pressing block with an opening facing downward and a pressing cylinder that drives the inverted U-shaped pressing block downward. The operation is generally to place the oil rail distribution pipe into the positioning groove for preliminary positioning, and then start the pressing cylinder, and the inverted U-shaped pressing block is pressed downward and sleeved on the outer wall of the oil rail distribution pipe, thereby locking the position of the oil rail distribution pipe. In the above process, since the pressing block is an inverted U-shaped pressing block, it is sleeved on the outer wall of the oil rail distribution pipe in the pressed state, and has more contact with the outer wall of the oil rail distribution pipe, and it is easier to form more obvious indentations or scratches. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning fixture for an oil rail distribution pipe, which can be used to solve the technical problem that the existing positioning fixtures easily form too many indentations or scratches on the wall of the oil rail distribution pipe. The utility model has a simple structure and can be used to position and clamp the oil rail distribution pipe.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A positioning fixture for an oil rail distribution pipe comprises a fixed bottom plate, the upper end of which is fixedly connected to a pipe end limiting base block; and a side push moving block, the side push moving block is connected to a side push cylinder for driving the side push moving block to move back and forth toward the pipe end limiting base block;

[0007] The pipe end limiting base block and the side push moving block are distributed on the left and right, and a plurality of clamping blocks are arranged between the pipe end limiting base block and the side push moving block; the lower end of the clamping block is connected to a clamping cylinder for driving the clamping block to move up and down; the front and rear end faces of the clamping block are both inclined surfaces; a pipe wall limiting base block is respectively arranged on the front side of the front end face of the clamping block and the rear side of the clamping block;

[0008] The tube wall limiting base block is fixedly connected to the upper end of the fixed bottom plate.

[0009] Furthermore, a plurality of tube end side push blocks are arranged at one end of the side push moving block facing the tube end limiting base block; and an elastic component is also connected between the tube end side push block and the side push moving block.

[0010] Furthermore, a slide rail is provided at the upper end of the fixed bottom plate below the side-pushing moving block; a slide groove is provided at the lower end of the side-pushing moving block, and the slide rail and the slide groove are slidably connected.

[0011] Furthermore, a limiting side block is provided on the left side or the right side of the clamping block, and the limiting side block is fixedly connected to the upper end of the fixed bottom plate.

[0012] Furthermore, a distribution pipe support block is also provided at the upper end of the fixed bottom plate between the pipe end limiting base block and the side push moving block.

[0013] Furthermore, a plurality of ventilation holes are provided on the side wall of the tube end limiting base block facing the side push moving block, and the diameter of the ventilation holes on the side wall of the tube end limiting base block is smaller than the wall thickness of the oil rail distribution pipe; a ventilation cavity is provided in the tube end limiting base block, and the ventilation holes are connected with the ventilation cavity; an air inlet is provided on one end of the ventilation cavity.

[0014] Compared with the prior art, the utility model provides a fuel rail distribution pipe positioning fixture, which has the following

[0015] Beneficial effects:

[0016] In the oil rail distribution pipe positioning fixture of the utility model, a clamping block with inclined front and rear end faces is used, and a tube wall limiting base block is provided on one side of the front and rear end faces of the clamping block, and the tube wall limiting base block is fixedly connected to the upper end of the fixed bottom plate. When the oil rail distribution pipe is placed between the tube wall limiting base block and the clamping block, the clamping block is driven by the clamping cylinder to press down and cause the inclined surface to be in close contact with the tube wall of the oil rail distribution pipe and push and clamp it toward the tube wall limiting base block. Since the tube wall limiting base block is fixed to the upper end of the fixed bottom plate, the front and rear positions of the oil rail distribution pipe can be locked after the oil rail distribution pipe is clamped between the inclined surface and the tube wall limiting base block.

[0017] In the above clamping mode, since the end surface of the clamping block in contact with the wall of the oil rail distribution pipe is an inclined surface, the contact surface between the clamping block and the wall of the oil rail distribution pipe is relatively small in the clamping state. In addition, when the clamping cylinder drives the clamping block to move upward and reset, the clamping block blocks the top of the oil rail distribution pipe relatively less, and the distribution pipe can be more conveniently removed from the distribution pipe placement position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of the oil rail distribution pipe positioning fixture in the use state of the utility model.

[0019] Figure 2It is a top view of the oil rail distribution pipe positioning fixture in the use state of the utility model.

[0020] Figure 3 It is a sectional view taken along AA direction.

[0021] Figure 4 It is a side view of the oil rail distribution pipe positioning fixture in the use state of the utility model.

[0022] Figure 5 It is a side view of the connection structure among the clamping block, the clamping cylinder, the distribution pipe support block and the pipe wall limiting base block in the utility model.

[0023] Figure 6 The utility model is a schematic diagram of the connection structure among the side-thrust cylinder, the side-thrust moving block, the slide rail, the pipe end side-thrust block and the spring.

[0024] In the picture:

[0025] 1-fixed base plate, 2-side push moving block, 3-tube end limiting base block, 4-distribution pipe supporting block, 5-tube wall limiting base block, 6-limiting side block, 7-clamping block, 8-clamping cylinder, 9-tube end side push block, 10-slide rail, 11-oil rail distribution pipe, 12-spring, 13-side push cylinder, 14-front end face, 15-rear end face, 16-ventilation hole, 17-ventilation cavity, 18-air inlet, 19-distribution pipe placement position. DETAILED DESCRIPTION

[0026] 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 of 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.

[0027] like Figure 1-6 As shown, the utility model provides a positioning fixture for an oil rail distribution pipe. Figure 1 , Figure 2 and Figure 4 In the schematic diagram of the oil rail distribution pipe positioning fixture, the oil rail distribution pipe 11 is assembled.

[0028] like Figure 1 , 4 As shown, in this embodiment, the oil rail distribution pipe positioning fixture includes a fixed base plate 1, the upper end of which is fixedly connected to a pipe end limiting base block 3; it also includes a side push moving block 2, to which is connected a side push cylinder 13 that drives the side push moving block 2 to move back and forth left and right toward the pipe end limiting base block 3.

[0029] The pipe end limit base block 3 and the side push moving block 2 are distributed on the upper end of the fixed bottom plate 1. The pipe end limit base block 3 is fixedly connected to the upper end of the fixed bottom plate 1, and the side push moving block 2 can move horizontally left and right under the drive of the side push cylinder 13. During operation, the oil rail distribution pipe 11 is placed between the pipe end limit base block 3 and the side push moving block 2 and extends horizontally left and right.

[0030] like Figure 4 As shown, in this embodiment, the side push moving block 2 is connected to the moving end of the side push cylinder 13 through the connecting block, and the side push cylinder 13 is connected to the lower end of the fixed bottom plate 1. At the same time, in order to better guide the movement of the side push moving block 2, a slide rail 10 extending left and right is further provided at the upper end of the fixed bottom plate 1 below the side push moving block 2; a slide groove is provided at the lower end of the side push moving block 2, and the slide rail 10 is slidably connected to the slide groove, so that the side push moving block 2 can move left and right along the slide rail 10.

[0031] like Figure 1 , 2 As shown, a plurality of clamping blocks 7 are further provided between the tube end limiting base block 3 and the side push movable block 2. The lower end of the clamping block 7 is connected to a clamping cylinder 8 that drives the clamping block 7 to move up and down. In this embodiment, the clamping block 7 as a whole is in the shape of a block that is larger at the top and smaller at the bottom, and the front and rear end surfaces of the clamping block 7 (i.e., the front end surface 14 and the rear end surface 15) are both inclined surfaces. A tube wall limiting base block 5 is provided on one side of each inclined surface, that is, a tube wall limiting base block 5 is provided on the front side of the front end surface 14 and the rear side of the rear end surface 15. At the same time, the inclined surface is inclined upward toward the direction of the tube wall limiting base block 5 (such as Figure 5 shown).

[0032] A distribution pipe resting position 19 is provided between the clamping block 7 and the pipe wall limiting base block 5. During operation, the oil rail distribution pipe 11 is placed in the distribution pipe resting position 19, and the oil rail distribution pipe 11 located in the distribution pipe resting position 19 will be placed between the inclined surface and the pipe wall limiting base block 5. When the clamping block 7 is pressed down, the front end face 14 and the rear end face 15 of the same clamping block 7 will simultaneously push the two oil rail distribution pipes 11 toward the two pipe wall limiting base blocks 5 respectively. When pushed into place, the oil rail distribution pipe 11 will be pressed tightly against the side end of the pipe wall limiting base block 5, and the front and rear positions of the oil rail distribution pipe 11 will be locked, such as Figure 1 shown.

[0033] like Figure 1 , 5 As shown, in this embodiment, a distribution pipe support block 4 is also included. The distribution pipe support block 4 is used to support the oil rail distribution pipe 11 and is located below the distribution pipe placement position 19. In this embodiment, the pipe wall limiting base block 5 is integrally connected to the distribution pipe support block 4, as shown in FIG. Figure 5 shown.

[0034] Since the pipe end limiting block 3 is fixedly connected to the upper end of the fixed bottom plate 1, the side end surface of the pipe end limiting block 3 facing the side push moving block 2 can be used as the positioning reference of the left end of the oil rail distribution pipe 11. The pipe wall limiting block 5 is fixedly connected to the upper end of the fixed bottom plate 1, and the side end surface of the pipe wall limiting block 5 facing the clamping block 7 can be used as the positioning reference of the pipe wall of the oil rail distribution pipe 11.

[0035] Preferably, in this embodiment, in order to preliminarily limit the position of the oil rail distribution pipe 11 before the clamping block 7 is pressed down, we can also add a limiting side block 6 on the left or right side of the clamping block 7, and the limiting side block 6 is fixedly connected to the upper end of the fixed bottom plate 1. When the oil rail distribution pipe 11 is placed in the distribution pipe resting position 19, the limiting side block 6 and the pipe wall limiting base block 5 will form a block on the pipe wall of the oil rail distribution pipe 11 at the front and rear sides of the oil rail distribution pipe 11, respectively, to limit the forward and backward movement of the oil rail distribution pipe 11.

[0036] Preferably, in this embodiment, a plurality of tube end side push blocks 9 are provided on one end of the side push moving block 2 facing the tube end limiting base block 3; an elastic component is also connected between the tube end side push block 9 and the side push moving block 2. The elastic component in this embodiment is a spring 12, such as Figure 1 , 2 shown.

[0037] like Figure 2 As shown, when four oil rail distribution pipes 11 are placed in the positioning fixture at the same time, the four pipe end side push blocks 9 can be respectively aligned with the right end of one oil rail distribution pipe 11 and pushed to the left. At this time, even if the four oil rail distribution pipes 11 have slight differences in length, due to the presence of the spring 12, when the side push moving block 2 is pushed to the left, the four pipe end side push blocks 9 can still press the four oil rail distribution pipes 11 toward the right end surface of the pipe end limiting base block 3 at the same time, so that the left end surfaces of the four oil rail distribution pipes 11 are all pressed tightly against the right end surface of the pipe end limiting base block 3.

[0038] If the spring 12 is missing and there are slight differences in the lengths of the four oil rail distribution pipes 11, after the side push moving block 2 moves to the left, the shorter oil rail distribution pipe may not be pushed to the left into place, that is, the left end face of the shorter oil rail distribution pipe may not be pressed tightly against the right end face of the pipe end limiting base block 3, so that in the subsequent drilling operation, the shorter oil rail distribution pipe is prone to displacement, resulting in drilling failure.

[0039] Preferably, in this embodiment, four ventilation holes 16 with two ends connected are further provided on the side wall of the tube end limiting base block 3 in the direction of the side push moving block 2; a ventilation cavity 17 is provided inside the tube end limiting base block 3, and each ventilation hole 16 is connected to the ventilation cavity 17; an air inlet 18 is provided at one end of the ventilation cavity 17, such as Figure 3As shown. The air inlet 18 can be connected to the air tightness detection device through the ventilation pipe. Specifically, a thread can be set at the air inlet 18 for threaded connection with the air inlet joint, and then the air inlet joint is connected to the ventilation pipe, and the ventilation pipe is connected to the air tightness detection device.

[0040] In this embodiment, the opening of the vent hole 16 is circular, and the opening of one end of the vent hole 16 is located on the side wall of the tube end limiting base block 3, and the opening of the other end of the vent hole 16 is connected to the ventilation cavity 17. In addition, the opening diameter of the vent hole 16 located on the side wall of the tube end limiting base block 3 is smaller than the wall thickness of the oil rail distribution pipe 11. When the left end face of the oil rail distribution pipe 11 is pressed against the right end face of the tube end limiting base block 3, the end face of the tube opening of the left end of the oil rail distribution pipe 11 will be tightly attached to the right end face of the tube end limiting base block 3 and cover the opening of the vent hole 16, and the opening of the vent hole 16 located on the right end face of the tube end limiting base block 3 is blocked. At this time, the oil rail distribution pipe 11 is in a preset clamping state.

[0041] We introduce gas into the ventilation cavity 17 from the air inlet 18. If the air tightness detection equipment gives a leakage prompt, it means that the ventilation hole 16 is not blocked or not completely blocked. Based on this, we can judge that the oil rail distribution pipe 11 is not in the preset clamping state.

[0042] The operation steps of the oil rail distribution pipe positioning fixture in this embodiment are briefly as follows:

[0043] First, four oil rail distribution pipes 11 are placed in a distribution pipe placement position 19 respectively, as shown in FIG. Figure 2 shown.

[0044] Next, the side thrust cylinder 13 is started, and the side thrust moving block 2 moves leftward, driving the pipe end side thrust block 9 to push leftward, pressing the left end of the oil rail distribution pipe 11 tightly against the right end surface of the pipe end limiting base block 3.

[0045] Next, the four clamping cylinders 8 are started to drive the four clamping blocks 7 to be pressed down at the same time, and the four oil rail distribution pipes 11 are pushed toward the corresponding pipe wall limiting base blocks 5 at the same time.

[0046] Finally, the air tightness detection equipment is started to introduce gas into the ventilation cavity 17 from the air inlet 18 to detect whether the four oil rail distribution pipes 11 are all in the preset clamping state.

[0047] If the four oil rail distribution pipes 11 are in a preset clamping state, a tool can be used to punch holes on the distribution straight pipes. Since the relative positions of the oil rail distribution pipes 11 in the positioning fixture have been locked, the oil rail distribution pipes 11 will not easily move or rotate radially during the punching operation.

Claims

1. A fuel rail distribution pipe positioning fixture, characterized in that: It includes a fixed bottom plate, the upper end of which is fixedly connected to a pipe end limiting base block; it also includes a side push moving block, the side push moving block is connected to a side push cylinder that drives the side push moving block to move back and forth toward the pipe end limiting base block; The pipe end limiting base block and the side push moving block are distributed on the left and right, and a plurality of clamping blocks are arranged between the pipe end limiting base block and the side push moving block; the lower end of the clamping block is connected to a clamping cylinder for driving the clamping block to move up and down; the front and rear end faces of the clamping block are both inclined surfaces; a pipe wall limiting base block is respectively arranged on the front side of the front end face of the clamping block and the rear side of the clamping block; The tube wall limiting base block is fixedly connected to the upper end of the fixed bottom plate.

2. The oil rail distribution pipe positioning fixture according to claim 1, characterized in that: A plurality of tube end side push blocks are arranged at one end of the side push moving block facing the tube end limiting base block; and an elastic component is also connected between the tube end side push block and the side push moving block.

3. The oil rail distribution pipe positioning fixture according to claim 2, characterized in that: A slide rail is also provided at the upper end of the fixed bottom plate below the side push moving block; a slide groove is provided at the lower end of the side push moving block, and the slide rail is slidably connected to the slide groove.

4. The oil rail distribution pipe positioning fixture according to claim 3, characterized in that: A limiting side block is also provided on the left side or the right side of the clamping block, and the limiting side block is fixedly connected to the upper end of the fixed bottom plate.

5. The oil rail distribution pipe positioning fixture according to claim 4, characterized in that: A distribution pipe supporting block is also provided at the upper end of the fixed bottom plate between the pipe end limiting base block and the side push moving block.

6. A fuel rail distribution pipe positioning fixture according to any one of claims 1 to 5, characterized in that: A plurality of ventilation holes are also provided on the side wall of the tube end limiting base block facing the side push moving block, and the diameter of the opening of the ventilation holes on the side wall of the tube end limiting base block is smaller than the wall thickness of the oil rail distribution pipe; a ventilation cavity is provided in the tube end limiting base block, and the ventilation holes are connected with the ventilation cavity; an air inlet is provided on one end of the ventilation cavity.

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