Industrial detection sensor assembly auxiliary fixing jig

Abstract

This utility model discloses an auxiliary fixing fixture for assembling industrial detection sensors, including a first side plate, a top plate, and a second side plate. The first and second side plates are arranged vertically opposite each other, with the top plate located on top of the first and second side plates. The front end, rear end, and bottom end of the fixture are open. The sensor lens is assembled in the upper shell, and the fixture clamps the upper shell to prevent it from expanding outwards. The inner walls of the first and second side plates abut against the outer walls of the upper shell on both sides, and the inner wall of the top plate contacts the top surface of the upper shell. The fixture has an inlet that is wider at the bottom and narrower at the top, and the root of the fixture has a corner-clearing design. This utility model effectively solves the problem of upper shell expansion. After the lens is assembled into the upper shell, the fixture is engaged along the length of the upper shell, causing the upper shell to shrink inwards to an ideal state. While ensuring that the upper shell does not expand outwards, subsequent processes such as glue application and lower shell installation are then performed. The fixture is removed only after the glue has dried completely, greatly improving the yield rate.

Description

Technical Field

[0001] This utility model relates to the field of sensor assembly auxiliary tooling equipment technology, and more specifically to an auxiliary fixing fixture for assembling industrial detection sensors. Background Technology

[0002] Due to the unique structure of industrial scanning and inspection products, the lenses cannot be obstructed, therefore a groove needs to be cut in the middle of the upper housing. Specific products include... Figure 1 As shown in the figure: upper shell 101, lens 102, lower shell 103, substrate 104, sensor wafer 105. The upper shell 101 has a long slot, and the middle of the bottom of the slot also needs to be slotted. The lens 102 is installed in the slot of the upper shell 101. The sensor wafer 105 is installed on the substrate 104. The substrate 104 is installed on the lower shell 103. The lower shell 103 and the upper shell 101 are screwed together. The sensor wafer 105 needs to be located directly below the lens 102 and there should be no obstruction between the two.

[0003] The entire middle section of the upper shell 101 needs to be open, with only a small portion connecting the two ends. Figure 2 As shown, the line scan width is long, requiring the upper shell 101 to be very long as well. Currently, the common length is around 1 meter, with the longest reaching 3.5 meters. The upper shell is made of aluminum. Because existing equipment and technology cannot completely remove the internal stress of the aluminum shell during machining, the internal stress causes deformation, resulting in the upper shell expanding outwards. Figure 3 As shown, the product, commonly known as a "big belly," expands outwards more severely as the product length increases.

[0004] The upper shell 101 is expanded outwards, and the following problems will occur during product assembly: (1) When assembling the lens, the lens will tilt, such as Figure 4 As shown; (2) After expansion, it is not conducive to dispensing glue, and the glue is easy to flow to the bottom of the shell, which will affect the lens and other components; (3) When the expansion is severe, the lens and sensor wafer will be offset, affecting image transmission, such as Figure 5 As shown.

[0005] Since the upper shell's outward expansion cannot be reversed due to its own inherent limitations, external intervention is needed to mitigate the problem. Existing scanning and inspection products modify the lens assembly within the inspection product itself. While locking the upper shell onto the lower shell reduces the outward expansion, gaps remain in the screw holes, failing to fundamentally solve the problem. Current technology includes methods such as locking the lens from the side of the upper shell 101 with screw 106 to move it. Figure 6 As shown, the lens 102 is fixed to the inner wall on the other side, but the inner wall itself will be C-shaped or even S-shaped, so that the lens will deform according to the deformation of the inner wall of the upper shell, and will push the inner wall on the side of the shell screw to move further away from the lens, which is not conducive to glue application.

[0006] Therefore, a fixture needs to be developed to assist in the expansion of the shell until all the test products are assembled. Summary of the Invention

[0007] To address the aforementioned issues, this invention provides an auxiliary fixture for assembling industrial detection sensors. After the lens is assembled, the fixture is used to correct the outward expansion of the upper shell until the entire product is assembled.

[0008] According to one aspect of the present invention, an auxiliary fixing fixture for assembling an industrial detection sensor is provided for straightening the upper shell of the sensor. The fixture includes a first side plate, a top plate, and a second side plate, which are arranged vertically opposite each other. The top plate is located on top of the first and second side plates and is arranged perpendicularly to the first and second side plates. The front end, rear end, and bottom end of the fixture are open. The lens of the sensor is assembled in the upper shell. The fixture clamps the upper shell to prevent it from expanding outward. The inner walls of the first and second side plates abut against the outer walls of the upper shell on both sides, respectively. The inner wall of the top plate contacts the top surface of the upper shell. Therefore, during product assembly, the lens is first assembled into the upper shell, and then a jig is assembled on the upper shell. There can be multiple jigs distributed along the length of the upper shell to make the upper shell shrink inward to the ideal state. Glue is applied to both sides of the lens, and the sensor wafer is pre-fabricated on the substrate. The substrate is assembled onto the lower shell, and the upper shell is assembled onto the lower shell with screws. After the glue on both sides of the lens has completely dried, the jig is removed to complete the assembly. This solves the problem of the upper shell expanding outward.

[0009] In some embodiments, the lower part of the inner wall of the first side plate is provided with a first inclined surface, and the lower part of the inner wall of the second side plate is provided with a second inclined surface, forming an inlet that is wider at the bottom and narrower at the top. Therefore, when the fixture is attached to the upper shell, the inlet that is wider at the bottom and narrower at the top facilitates the upper shell's entry into the fixture.

[0010] In some embodiments, the connection between the first side plate and the top plate, and the connection between the second side plate and the top plate, are provided with corner clearing, which is a small arc structure that curves inward toward the fixture itself. Thus, by clearing the corners at the connection points, it can be ensured that the top surface of the upper shell fits snugly against the inner wall of the top plate of the fixture, so that the fixture is placed in place and stable.

[0011] In some embodiments, the first side plate, the top plate, and the second side plate are an integral structure.

[0012] In some embodiments, the top plate includes a left top plate and a right top plate. The left top plate is perpendicularly connected to the first side plate, and the right top plate is perpendicularly connected to the second side plate. The left and right top plates are spliced ​​and fixed together, and the inner walls of both the left and right top plates are in contact with the top surface of the upper shell. Therefore, in addition to a one-piece structure, the fixture can also adopt a split splicing structure, with the left top plate and the first side plate being one piece, and the right top plate and the second side plate being one piece. When the two parts are spliced, the gap at the splicing point can be adjusted according to the width of the upper shell to meet the adjustment requirements of small upper shell dimensions, thus improving the applicability of the fixture.

[0013] In some embodiments, the left top plate has a support portion and the right top plate has a pressing portion. The lower surface of the support portion is flush with the lower surface of the left top plate, and the support portion has a countersunk hole. The upper surface of the pressing portion is flush with the upper surface of the right top plate, and the pressing portion has a corresponding through hole. The support portion and the pressing portion are overlapped and assembled with screws that are locked from bottom to top. Multiple sets of through holes can be provided. Thus, the assembly and fixing points are selected according to the width of the upper shell, and screws are used from below, sequentially passing through the countersunk hole of the left top plate and the through hole of the right top plate, to lock and fix the assembly. The fixing points can be designed according to the commonly used upper shell width.

[0014] In some embodiments, the left top plate has an insertion part, and the right top plate has an insertion interface. A set screw is threadedly connected to the upper side of the insertion interface. The insertion part has a waist-shaped adjustment groove, and the insertion part is embedded in the insertion interface. The lower end of the set screw abuts against the bottom of the waist-shaped adjustment groove. Thus, the length of the insertion part embedded in the insertion interface changes the distance between the first side plate and the second side plate to accommodate upper shells of different widths.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the fixture provided by this utility model has a simple structure, but can effectively solve the problem of the upper shell expanding outward. The fixture can adopt an integrated structure or a modular structure. The fixture has an inlet that is wider at the bottom and narrower at the top, as well as a corner clearing design, to ensure that the fixture and the upper shell are assembled smoothly and can be installed in place. After the lens is assembled to the upper shell, the fixture is engaged along the length direction of the upper shell, so that the upper shell is retracted to the ideal state. While ensuring that the upper shell does not expand outward, subsequent processes such as glue application and lower shell installation are then performed until the glue is completely dry before removing the fixture. The product can be fixed by the glue on both sides of the lens and the screws of the upper and lower shells, resulting in a qualified product with qualified lens and wafer positions and easy glue application contamination. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an existing industrial detection sensor product. Figure 2 This is a schematic diagram of an existing industrial detection sensor product where the upper shell does not have an external expansion. Figure 3 yes Figure 2 A schematic diagram of the expansion of the upper and middle shells; Figure 4 This is a schematic diagram showing how the lens tilts due to the outward expansion of the upper shell; Figure 5 This is a schematic diagram showing the misalignment of the lens and sensor wafer caused by the outward expansion of the upper shell; Figure 6 This is a schematic diagram of the installation of the lens by locking screws on the side of the upper shell in the existing technology; Figure 7 This is a schematic diagram of the assembly structure of the fixture and industrial detection sensor according to one embodiment of the present invention; Figure 8 yes Figure 7 Exploded view; Figure 9A This is a schematic diagram of the fixture in Example 2; Figure 9B This is a top view of the fixture in Embodiment 2 having a set of connection points; Figure 9C This is a schematic diagram of the fixture in Example 2 having multiple sets of connection points; Figure 10 This is a schematic diagram of the fixture in Example 3. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments.

[0018] This utility model provides an auxiliary fixing fixture for assembling industrial detection sensors, which is used to straighten the upper shell 101 of the sensor during product assembly, solve the problem of the upper shell 101 expanding outward, and keep the upper shell 101 and lens 102 from bending and deformation, so as to obtain a qualified product in which the upper shell 101 does not expand outward, the lens 102 and the wafer are correctly positioned, the glue is free of contamination, and the whole is not bent and deformed.

[0019] Example 1 like Figure 7 and 8 As shown, the fixture includes a first side plate 11, a top plate 13, and a second side plate 12. The first side plate 11 and the second side plate 12 are separate and vertically opposite each other. The top plate 13 is located on top of the first side plate 11 and the second side plate 12 and is perpendicular to the first side plate 11 and the second side plate 12. The front end, rear end, and bottom end of the fixture are open. In this embodiment, the fixture composed of the first side plate 11, the top plate 13, and the second side plate 12 is an integral structure.

[0020] A first inclined surface 14 is machined on the lower inner wall of the first side plate 11, and a second inclined surface 15 is machined on the lower inner wall of the second side plate 12. An inlet 16, which is wider at the bottom and narrower at the top, is formed between the first inclined surface 14 and the second inclined surface 15. In this way, when the fixture is attached to the upper shell 101, the inlet 16, which is wider at the bottom and narrower at the top, can facilitate the upper shell 101 to enter the fixture.

[0021] The joints between the first side plate 11 and the top plate 13, and between the second side plate 12 and the top plate 13, have been cleaned at the corners. The corner 17 is a small arc structure that curves inward toward the fixture itself. Cleaning the corners at the joints ensures that when the fixture is assembled with the upper shell 101, the top surface 1011 of the upper shell 101 fits snugly against the inner wall of the top plate 13 of the fixture, so that the fixture is placed in place and stable.

[0022] The specific steps for assembling industrial inspection sensor products using the above-mentioned fixture are as follows: Step 1: Assemble the lens 102 into the upper shell 101; Step Two: Assemble the aforementioned assembly auxiliary fixing fixtures onto the upper shell 101. For an upper shell 101 approximately one meter in length, fixtures are typically installed at one-third and two-thirds of the length of the upper shell 101. For a longer upper shell 101, the number of fixtures can be increased appropriately based on its length to achieve the desired inward retraction of the upper shell 101. These fixtures clamp the upper shell 101 to prevent it from expanding outward. The inner walls of the first side plate 11 and the second side plate 12 abut against the outer walls of the upper shell 101 on both sides, respectively. The inner wall of the top plate 13 contacts the top surface 1011 of the upper shell 101.

[0023] Step 3: Apply glue to both sides of lens 102; Step 4: The sensor wafer 105 is fabricated on the substrate 104, and the substrate 104 is mounted on the lower shell 103, completing the assembly of the lower shell 103. This assembly of the lower shell 103 can be prefabricated. Then, the upper shell 101 is assembled onto the lower shell 103 with screws.

[0024] Step 5: After the glue on both sides of lens 102 has completely dried, remove the fixture from the upper shell 101 and the assembly is complete.

[0025] Although the fixture provided in this application has a simple structure, it can effectively solve the problem of the upper shell 101 expanding outward. The fixture has an inlet 16 that is wider at the bottom and narrower at the top, as well as a corner clearing design 17, to ensure that the fixture and the upper shell 101 are assembled smoothly and can be installed in place. After ensuring that the upper shell 101 does not expand outward, subsequent processes such as dispensing glue, installing the lower shell 103, and installing the end cap 107 are then performed until the glue is completely dry before removing the fixture. The product can be fixed by the glue on both sides of the lens 102 and the screws of the upper and lower shells 103, resulting in a qualified product with the lens 102 and wafer in the correct positions and the glue dispensing not easily contaminated.

[0026] Example 2 The difference between this embodiment 2 and embodiment 1 is that the fixture adopts a split splicing structure.

[0027] Specifically, such as Figure 9A As shown, the fixture is divided into two parts. The top plate 13 includes a left top plate 131 and a right top plate 132. The left top plate 131 is vertically connected to the first side plate 11 and is integral with the first side plate 11. The right top plate 132 is vertically connected to the second side plate 12 and is integral with the second side plate 12. The left top plate 131 and the right top plate 132 are spliced ​​and fixed. The inner walls of the left top plate 131 and the right top plate 132 are in contact with the top surface 1011 of the upper shell 101.

[0028] The left top plate 131 has a support portion 1311, the lower surface of which is flush with the lower surface of the left top plate 131. A countersunk hole 1312 is provided on the lower surface of the support portion 1311. The right top plate 132 has a pressing portion 1321, the upper surface of which is flush with the upper surface of the right top plate 132. A corresponding through hole 1322 is provided in the pressing portion 1321. The through hole 1322 corresponds to the countersunk hole 1312. The support portion 1311 and the pressing portion 1321 are overlapped and assembled. Screws 133 are used to pass through the countersunk hole 1312 of the left top plate 131 and the through hole 1322 of the right top plate 132 from below, and nuts 135 are used to lock and fix them.

[0029] To broaden the applicability of the fixture and accommodate different widths of the upper shell 101, multiple sets of through holes 1322 can be provided. This allows for adjustment of the gap between the two parts during splicing, based on the width of the upper shell 101, to meet the adjustment requirements of smaller sizes of the upper shell 101.

[0030] For a given width dimension, there are two sets of countersunk holes 1312 and through holes 1322, and these two sets are aligned on the same straight line, as shown below. Figure 9B As shown. If there are multiple sets of points, the position can be adjusted and spliced. There are multiple vias 1322, and the vias 1322 can be evenly distributed along the left and right directions (e.g. Figure 9C As shown), through holes 1322 can also be machined at the required size points according to the specifications of the company's internal upper shell 101, and the right top plate 132 can be moved. Different through holes 1322 can be adapted to the countersunk holes 1312 of the left top plate 131 to adjust the distance between the first side plate 11 and the second side plate 12, change the width of the fixture, and meet the size requirements of different products.

[0031] Example 3 The difference between Embodiment 3 and Embodiment 2 is that both adopt a split splicing structure, but the splicing connection structure is different.

[0032] Specifically, such as Figure 10 As shown, the left top plate 131 has an insertion part 1313, and the right top plate 132 has an insertion interface 1323. An internal thread connects a set screw 134 to the upper side of the insertion interface 1323. The set screw 134 is a stud with external threads. The insertion part 1313 has a waist-shaped adjustment groove 1314, which is elongated and positioned horizontally, but the bottom of the groove is not through. The insertion part 1313 is embedded in the insertion interface 1323, and the lower end of the set screw 134 abuts against the bottom of the waist-shaped adjustment groove 1314. The length of the insertion part 1313 embedded in the insertion interface 1323 changes the distance between the first side plate 11 and the second side plate 12 to accommodate upper shells 101 of different widths.

[0033] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An auxiliary fixing fixture for assembling industrial detection sensors, used to straighten the upper shell (101) of the sensor, characterized in that, The fixture includes a first side plate (11), a top plate (13), and a second side plate (12). The first side plate (11) and the second side plate (12) are arranged vertically opposite each other. The top plate (13) is located on top of the first side plate (11) and the second side plate (12). The top plate (13) is arranged perpendicularly to the first side plate (11) and the second side plate (12). The front end, rear end, and bottom end of the fixture are open. The lens (102) of the sensor is assembled in the upper shell (101). The fixture is clamped outside the upper shell (101) to prevent the upper shell (101) from expanding outward. The inner walls of the first side plate (11) and the second side plate (12) abut against the outer walls of the upper shell (101) on both sides. The inner wall of the top plate (13) contacts the top surface of the upper shell (101).

2. The industrial detection sensor assembly auxiliary fixing fixture according to claim 1, characterized in that, The lower part of the inner wall of the first side plate (11) is provided with a first inclined surface (14), and the lower part of the inner wall of the second side plate (12) is provided with a second inclined surface (15). An inlet (16) that is wider at the bottom and narrower at the top is formed between the first inclined surface (14) and the second inclined surface (15).

3. The industrial detection sensor assembly auxiliary fixing fixture according to claim 2, characterized in that, The connection between the first side plate (11) and the top plate (13) and the connection between the second side plate (12) and the top plate (13) are provided with clear corners (17), and the clear corners (17) are small arc structures that are turned inward toward the fixture itself.

4. The industrial detection sensor assembly auxiliary fixing fixture according to any one of claims 1 to 3, characterized in that, The first side plate (11), the top plate (13), and the second side plate (12) are an integral structure.

5. The industrial detection sensor assembly auxiliary fixing fixture according to any one of claims 1 to 3, characterized in that, The top plate (13) includes a left top plate (131) and a right top plate (132). The left top plate (131) is vertically connected to the first side plate (11), and the right top plate (132) is vertically connected to the second side plate (12). The left top plate (131) and the right top plate (132) are spliced ​​and fixed. The inner walls of the left top plate (131) and the right top plate (132) are in contact with the top surface of the upper shell (101).

6. The industrial detection sensor assembly auxiliary fixing fixture according to claim 5, characterized in that, The left top plate (131) has a supporting part (1311), and the right top plate (132) has a pressing part (1321). The lower surface of the supporting part (1311) is flush with the lower surface of the left top plate (131). The supporting part (1311) is provided with a countersunk hole (1312). The upper surface of the pressing part (1321) is flush with the upper surface of the right top plate (132). The pressing part (1321) is provided with a corresponding through hole (1322). The supporting part (1311) and the pressing part (1321) are overlapped and assembled with screws (133) from bottom to top. Multiple sets of through holes (1322) may be provided.

7. The industrial detection sensor assembly auxiliary fixing fixture according to claim 5, characterized in that, The left top plate (131) has an insertion part (1313), and the right top plate (132) has a plug interface (1323). The upper side of the plug interface (1323) is connected to a set screw (134) by a thread. The insertion part (1313) is provided with a waist-shaped adjustment groove (1314). The insertion part (1313) is embedded in the plug interface (1323), and the lower end of the set screw (134) abuts against the bottom of the waist-shaped adjustment groove (1314).

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