A patch type photoelectric switch and its manufacturing process

Abstract

The present invention relates to the field of photoelectric switch technology, specifically to a patch type photoelectric switch and its preparation process, including a transmitting part and a receiving part, wherein the transmitting part includes a shell, and the transmitting part also includes a self-cleaning component, which includes a rubber block embedded in one side of the top of an upper partition, a slot is horizontally opened in the middle of the rubber block, and a light-transmitting plate is matched inside the slot; the self-cleaning component also includes a metal elastic ring arranged on the other side of the top of the upper partition, the metal elastic ring is elliptical when there is no external force, and the short axis direction of the metal elastic ring is consistent with the length direction of the light-transmitting plate, and an elastic capsule is arranged inside the metal elastic ring. The optical axis adjustment component improves the efficiency of equipment installation, the self-cleaning component ensures the smooth propagation of light, and the modular design avoids the previous overall replacement and maintenance, thereby improving the material utilization rate.

Description

Technical Field

[0001] The invention relates to the technical field of photoelectric switches, in particular to a patch-type opposing-beam photoelectric switch and a preparation process thereof. Background Art

[0002] The through-beam photoelectric switch consists of a transmitter and a receiver. Its working principle is that the light emitted by the transmitter directly enters the receiver. When the object to be detected passes between the transmitter and the receiver and blocks the light, the photoelectric switch generates a switch signal.

[0003] In some existing application environments, especially those with high dust content, dust will inevitably be electrostatically adsorbed on the convex lens, thereby hindering the normal propagation of light and ultimately affecting the normal use of the equipment. In addition, the through-beam photoelectric switch is the one with the longest effective distance in the field of photoelectric switches. However, except for the slotted through-beam photoelectric switch, the split through-beam switch generally has the problem of difficulty in aligning light, especially the SMD through-beam photoelectric switch. Specifically, when the device is welded on the circuit board as one, it cannot be moved anymore, and the light emitted by most types of photoelectric switches is invisible, making it difficult to align with the window of the receiving end, resulting in low installation efficiency. Furthermore, after being connected to the circuit board, it almost becomes a whole, and it is difficult to adjust their relative positions. Therefore, in some specific installation environments, it is necessary to specially consider the size of the circuit board and the installation position so that after the circuit board is installed, the light can be propagated along the required optical path, which invisibly increases the design workload. Summary of the invention

[0004] In order to solve the problems that the existing SMD type through-beam photoelectric switch is difficult to adjust the light path during installation and is easily affected by dust, resulting in poor light propagation, the present invention provides a SMD type through-beam photoelectric switch and a preparation process thereof to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A patch type through-beam photoelectric switch, comprising a transmitting part and a receiving part, wherein the transmitting part comprises a shell, an upper partition plate is provided above the interior of the shell, a lower partition plate is provided below the interior of the shell, a transmitting hole is provided on one side of the top of the shell, and a transmitting hole is provided on one side of the upper partition plate directly below the transmitting hole.

[0007] The emitting part also includes a light emitting assembly, which includes a control circuit board 1 embedded in one side of the lower partition 1, and an infrared diode connected to the control circuit board 1, wherein the infrared diode is located between the upper partition 1 and the lower partition 1 and directly below the emitting hole 2;

[0008] The light emitting component also includes a lens 1 arranged between the emitting hole 2 and the infrared diode.

[0009] As a preferred solution of the present invention, the emitting part also includes an optical axis adjustment component and a self-cleaning component, which includes a metal spring embedded in a through groove on the other side of the lower partition.

[0010] As a preferred solution of the present invention, the optical axis adjustment component 1 also includes a base 1 arranged on the top of the metal spring sheet 1.

[0011] As a preferred solution of the present invention, the self-cleaning component includes a heat dissipation plate arranged on the top of the elastic bag.

[0012] As a preferred solution of the present invention, the receiving part includes shell 2.

[0013] As a preferred solution of the present invention, the second optical axis adjustment component also includes a second horizontal adjustment bolt threadedly connected to one side of the second housing.

[0014] As a preferred solution of the present invention, the receiving part also includes a second self-cleaning component.

[0015] As a preferred solution of the present invention, the receiving part also includes a mounting base 2.

[0016] As a preferred solution of the present invention, the light emitting assembly further includes an indicator light disposed on one side of an outer portion of the housing.

[0017] A preparation process of a patch type through-beam photoelectric switch comprises the following steps:

[0018] Step 1, filling kerosene or mercury into the bag and sealing it to prepare an elastic bag 1;

[0019] Step 2: Solder the required electronic components on the circuit board and solder the timing circuit to prepare the control circuit board 1;

[0020] Step 3: 3D modeling of the shell 1 according to the size;

[0021] Step 4: Prepare the bottom shell 1 by injection molding process;

[0022] Step 5, assembling and welding the components prepared in steps 1 to 4 accordingly;

[0023] Step 6: Use laser printing or labeling technology to display the text symbols of the instructions on the shell 1 and the bottom shell 1, and finally prepare the emission part;

[0024] Step 7: Follow steps 1 to 6 to finally prepare the receiving part.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention provides an elastic metal spring sheet, so that when the longitudinal adjustment bolt pushes the metal spring sheet, the metal spring sheet can be deflected along the axial direction of the longitudinal adjustment bolt, so that the optical axis direction of the diode thereon can be adjusted to deflect, thereby realizing one-dimensional adjustment. Similarly, when the transverse adjustment bolt or the reset adjustment bolt acts on the folding wing plate, the metal spring sheet can be driven to deflect with the pin as the center of the circle, thereby the optical axis direction of the diode thereon can be adjusted to deflect, thereby realizing another dimensional adjustment, facilitating the shooting, and ultimately improving the efficiency of equipment installation.

[0027] 2. In the present invention, the elastic bag expands when heated, so that the metal elastic ring can be stretched into a circle, so that the metal elastic ring stretches to the other side under the obstruction of the boss on one side, thereby driving the light-transmitting plate to slide inside the slot. When the heat of the heat sink is dissipated, the elastic bag shrinks, and the metal elastic ring is reset under the action of its own elasticity, so that when rubbing against the rubber block, the dust in the light-transmitting hole on the light-transmitting plate is wiped off, ensuring smooth light propagation. The purpose of abandoning the common motor transmission structure is to reduce the installation space required for the equipment, improve the miniaturization of the equipment, and thus adapt to more application scenarios.

[0028] 3. The present invention provides multiple docking grooves that match the shell on the mounting base device, so that after the patch is installed, there are more options for the installation position of the shell, thereby enriching the use scenarios, improving the convenience and practicality of use, and in the later equipment maintenance, only one of the modules needs to be selectively replaced to ensure the use, avoiding the previous overall replacement and maintenance, and improving material utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 for Figure 1 Another perspective diagram of the structure;

[0031] Figure 3 It is a schematic diagram of the external structure of a housing of the present invention;

[0032] Figure 4 It is a schematic diagram of the internal structure of a housing of the present invention;

[0033] Figure 5 It is a schematic diagram of a cross-sectional structure of a housing of the present invention;

[0034] Figure 6 It is an exploded schematic diagram of a shell structure of the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of a metal spring of the present invention;

[0036] Figure 8 It is a structural schematic diagram of a light-transmitting plate 1, a rubber block 1, and a metal elastic ring 1 of the present invention;

[0037] Fig. 9 It is a schematic structural diagram of a metal elastic ring 1 of the present invention;

[0038] Fig.10 It is a schematic diagram of the external structure of the bottom shell of the present invention;

[0039] Fig.11 It is a schematic diagram of the internal structure of the bottom shell of the present invention;

[0040] Fig.12 for Fig.11 Another perspective diagram of the structure;

[0041] Fig.13 It is a schematic diagram of the external structure of the second housing of the present invention;

[0042] Fig.14 It is a schematic diagram of the internal structure of the second housing of the present invention;

[0043] Fig.15 It is a schematic diagram of the second cross-sectional structure of the shell of the present invention;

[0044] Fig.16 It is an exploded schematic diagram of the second structure of the housing of the present invention;

[0045] Fig.17 It is a schematic diagram of the structure of the second metal spring of the present invention;

[0046] Fig.18 It is a structural schematic diagram of the second light-transmitting plate, the second rubber block and the second metal elastic ring of the present invention;

[0047] Fig.19 This is a schematic diagram of the external structure of the bottom shell 2 of the present invention;

[0048] Fig. 20 It is a schematic diagram of the internal structure of the bottom shell 2 of the present invention;

[0049] Fig.21 for Fig. 20 Schematic diagram of another perspective of the structure.

[0050] Among them, 1. transmitting part; 101. shell; 102. upper partition; 103. lower partition; 104. control circuit board; 105. transmitting hole; 106. transmitting hole 2; 107. infrared diode; 108. lens; 109. indicator light; 110. metal spring; 111. through hole; 112. pin; 113. folding wing; 114. base; 115. horizontal adjustment bolt; 116. reset adjustment bolt; 117. vertical adjustment bolt; 118, rubber block 1; 119, light hole 1; 120, slot 1; 121, light-transmitting plate 1; 122, metal elastic ring 1; 123, ear 1; 124, elastic capsule 1; 125, heat sink 1; 126, electric heating wire 1; 127, heat dissipation hole 1; 128, bottom shell 1; 129, contact 1; 130, wiring contact pin 1; 131, magnetic block 1; 132, contact 2; 133, wiring contact pin 2; 134, magnetic block 2; 135, contact 3; 136, magnet 1; 2, receiving part; 201, shell 2; 202, upper partition 2; 203, lower partition 2; 204, control circuit board 2; 205, receiving hole 1; 206, receiving hole 2; 207, photodiode; 208, lens 2; 209, indicator light 2; 210, metal spring 2; 211, through hole 2; 212, pin 2; 213, folding wing 2; 214, base 2; 215, horizontal adjustment bolt 2; 216, reset adjustment bolt 2; 217, vertical adjustment bolt 2; 2 18. Two rubber blocks; 219. Two light holes; 220. Two slots; 221. Two light-transmitting plates; 222. Two metal elastic rings; 223. Two hanging ears; 224. Two elastic capsules; 225. Two heat sinks; 226. Two electric heating wires; 227. Two heat dissipation holes; 228. Two bottom shells; 229. Four contacts; 230. Three wiring contacts; 231. Three magnetic blocks; 232. Five contacts; 233. Four wiring contacts; 234. Four magnetic blocks; 235. Six contacts; 236. Two magnets. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Example:

[0053] like Figure 1-2 As shown, an embodiment of the present invention provides a patch type through-beam photoelectric switch, including a transmitting part 1 and a receiving part 2.

[0054] In this embodiment, reference Figure 3-5The launching part 1 includes a shell 101, an upper partition 102 is provided on the upper part of the shell 101, a lower partition 103 is provided on the lower part of the shell 101, a launching hole 105 is opened on one side of the top of the shell 101, and a launching hole 2 106 is opened on one side of the upper partition 102 just below the launching hole 105.

[0055] In this embodiment, reference Figure 4-5 The emitting part 1 also includes a light emitting component, which includes a control circuit board 104 embedded in one side of the lower partition 103, and an infrared diode 107 connected to the control circuit board 104. The infrared diode 107 is located between the upper partition 102 and the lower partition 103 and directly below the emitting hole 106.

[0056] Furthermore, the light emitting assembly also includes a lens 108 disposed between the second emitting hole 106 and the infrared diode 107, which is used to converge the light and increase the radiation effect distance.

[0057] Furthermore, the light emitting assembly also includes an indicator light 109 disposed on one side of the outer shell 101. The indicator light 109 is connected to the control circuit board 104 and is used to indicate the working status. It belongs to the prior art and will not be described in detail here.

[0058] In this embodiment, continue to refer to Figure 4-7 The emitting part 1 also includes an optical axis adjustment component, which includes a metal spring 110 embedded in a through slot on the other side of the lower partition 103, a through hole 111 is opened in the middle below the metal spring 110, a pin 112 is matched inside the through hole 111, one end of the pin 112 is connected to a side wall of the through slot, and a folding wing plate 113 is provided in the middle of the metal spring 110 along its thickness direction.

[0059] Furthermore, the optical axis adjustment component 1 also includes a transverse adjustment bolt 115 threadedly connected to one side of the housing 101 , and the inner end of the transverse adjustment bolt 115 passes through the housing 101 and abuts against one side of the folding wing plate 113 .

[0060] The optical axis adjustment component 1 also includes a reset adjustment bolt 116 threadedly connected to the other side of the housing 101 , and the inner end of the reset adjustment bolt 116 passes through the housing 101 and abuts against the other side of the folding wing plate 113 .

[0061] The optical axis adjustment component 1 also includes a longitudinal adjustment bolt 117 threadedly connected to one side of the housing 101 . The inner end of the longitudinal adjustment bolt 117 penetrates the housing 101 and abuts against the middle of one side of the metal spring sheet 110 .

[0062] In existing applications, through-beam photoelectric switches have the longest operating distance in the field of photoelectric switches. However, except for slotted through-beam photoelectric switches, split through-beam switches generally have the problem of difficulty in aligning with light, especially SMD through-beam photoelectric switches. Specifically, after the device is welded on the circuit board as one, it can no longer be moved, and the light emitted by most types of photoelectric switches is invisible, making it difficult to align with the window of the receiving end, resulting in low installation efficiency.

[0063] In this embodiment, since the metal spring sheet 110 is elastic, when the longitudinal adjustment bolt 117 pushes the metal spring sheet 110, the metal spring sheet 110 can be deflected along the axial direction of the longitudinal adjustment bolt 117, so that the optical axis direction of the infrared diode 107 thereon can be adjusted to deflect, thereby realizing one-dimensional adjustment. Similarly, when the transverse adjustment bolt 115 or the reset adjustment bolt 116 acts on the folding wing plate 113, the metal spring sheet 110 can be driven to deflect with the pin 112 as the center of the circle, thereby the optical axis direction of the infrared diode 107 thereon can be adjusted to deflect, thereby realizing another dimension of adjustment, facilitating the shooting, and ultimately improving the efficiency of the equipment installation. The optical axis adjustment component 2 recorded in the receiving part 2 below also plays the same role and effect.

[0064] Furthermore, the optical axis adjustment component 1 also includes a base 114 disposed on the top of the metal spring sheet 110 for assembling the lens 108 .

[0065] Among them, the top of the metal spring 110 is a fork-shaped structure 1, the two sides of the bottom of the base 114 are respectively installed on the top of the two sides of the fork-shaped structure 1, the lens 108 is installed on the top of the base 114, and the infrared diode 107 is installed in the middle of the fork-shaped structure 1.

[0066] In order to improve the emission and receiving effects when light is incident, a convex lens for converging light is usually set at the front end of the diode. In order to keep the focus of the convex lens and the optical axis in a straight line, the lens 108 is set on the metal spring 110 so that it can be adjusted synchronously when the infrared diode 107 is adjusted. The corresponding structure recorded in the receiving part 2 below also plays the same role and effect.

[0067] In this embodiment, reference is made again to 4-5 and also to Figure 8-9 The emitting portion 1 further includes a self-cleaning component, which includes a rubber block 118 embedded in one side of the top of the upper partition 102, a light-through hole 119 connected to the emitting hole 105 and the emitting hole 2 106 is vertically opened in the middle of the rubber block 118, a slot 120 is horizontally opened in the middle of the rubber block 118, and a light-transmitting plate 121 for closing the light-through hole 119 is matched inside the slot 120.

[0068] Furthermore, the self-cleaning component 1 also includes a metal elastic ring 122 arranged on the other side of the top of the upper partition 102. The metal elastic ring 122 is elliptical when there is no external force, and the short axis direction of the metal elastic ring 122 is consistent with the length direction of the light-transmitting plate 121. Both sides of the metal elastic ring 122 are located at both ends of its short axis. There are ears 123 on both sides. The ear 123 on one side is correspondingly hooked in the middle of one end of the light-transmitting plate 121, and the ear 123 on the other side is correspondingly hooked in the top boss of the upper partition 102. An elastic capsule 124 is provided inside the metal elastic ring 122, and the interior of the elastic capsule 124 is filled with a liquid that expands easily when heated, including but not limited to mercury and kerosene.

[0069] In this embodiment, again refer to Figure 4-6 The self-cleaning component also includes a heat sink 125 arranged on the top of the elastic bag 124, an electric heating wire 126 connected to the control circuit board 104 is arranged in the middle of the top of the heat sink 125, the control circuit board 104 is connected to a timing circuit for controlling the heating interval of the electric heating wire 126, and heat sink fins are arranged on both sides of the electric heating wire 126 on the top of the heat sink 125, and a heat dissipation hole 127 is opened on the other side of the top of the shell 101 above the heat sink 125.

[0070] When using the through-beam photoelectric switch, the most worrying issue is whether the diode light can be transmitted smoothly. In some application environments, especially in dusty environments, dust will inevitably be electrostatically adsorbed on the convex lens, thereby hindering the normal transmission of light. In this embodiment, the principle of thermal expansion and contraction is used. When the elastic capsule 124 expands, the metal elastic ring 122 can be stretched to become a circle, so that the metal elastic ring 122 is blocked by the boss on one side, and then the light-transmitting plate 121 is driven to slide inside the slot 120. When the heat of the heat sink 125 is dissipated, the elastic capsule 124 shrinks, and the metal elastic ring 122 is reset under its own elastic action, so that when rubbing against the rubber block 118, the dust in the light-transmitting hole 119 on the light-transmitting plate 121 is wiped off, ensuring smooth light propagation. The purpose of abandoning the common motor transmission structure is to reduce the installation space required for the equipment and improve the miniaturization of the transmitting part 1, so as to adapt to more application scenarios. The self-cleaning component 2 described in the receiving part 2 below also plays the same role and effect.

[0071] In this embodiment, again refer to Figure 3 The transmitting part 1 also includes a mounting base 1, which includes a magnet 136 installed on one side of the bottom of the shell 101, and a plurality of contacts 135 installed on the other side of the bottom of the shell 101. The contacts 135 are connected to the control circuit board 104 correspondingly, and a flange 1 is set around the bottom edge of the shell 101.

[0072] In this embodiment, again refer to Figure 10-12 The mounting base also includes a bottom shell 128, and the top and one side of the bottom shell 128 are provided with a groove surface that is adapted to the bottom flange of the shell 101.

[0073] Among them, a magnetic block 131 is installed on one side of the top groove surface 1 of the bottom shell 128, and the magnetic block 131 can be magnetically attracted to the magnet 136. A plurality of contacts 129 are installed on the other side of the top groove surface 1 of the bottom shell 128, and the contacts 129 are all connected to the wiring contact pin 130. The bottom end of the wiring contact pin 130 passes through the bottom of the bottom shell 128 and is folded to one side of the bottom shell 128. A magnetic block 2 134 is installed below the groove surface 1 of the side surface of the bottom shell 128, and the magnetic block 2 134 can be magnetically attracted to the magnet 136. A plurality of contacts 2 132 are installed above the groove surface 1 of the side surface of the bottom shell 128, and the contacts 2 132 are all connected to the wiring contact pin 2 133. The bottom end of the wiring contact pin 2 133 passes through the bottom of the bottom shell 128 and is folded to the other side of the bottom shell 128.

[0074] As mentioned above, the surface-mounted photoelectric switch almost becomes a whole after being connected to the circuit board, and it is difficult to adjust their relative positions. Therefore, in some specific installation environments, it is necessary to specially consider the size of the circuit board and the installation position so that after the circuit board is installed, the light can propagate along the required optical path, which invisibly increases the design workload. In this embodiment, by providing a plurality of docking groove surfaces 1 that are adapted to the shell 101 on the mounting base, the installation position of the shell 101 can be more selected after the patch is installed, thereby enriching the use scenarios and improving the convenience and practicality of use. Moreover, in the later equipment maintenance, only one of the modules needs to be selectively replaced to ensure its use, avoiding the previous overall replacement and maintenance, and improving the material utilization rate. The mounting base 2 recorded in the receiving part 2 below also plays the same role and effect.

[0075] In this embodiment, reference Figure 13-15 The receiving part 2 includes a shell body 201, an upper partition plate 202 is provided on the upper part of the shell body 201, a lower partition plate 203 is provided on the lower part of the shell body 201, a receiving hole 205 is provided on one side of the top of the shell body 201, and a receiving hole 206 is provided on one side of the upper partition plate 202 directly below the receiving hole 205.

[0076] In this embodiment, reference Figure 14-15The receiving part 2 also includes a light receiving component, which includes a control circuit board 204 embedded in one side of the lower partition 203, and a photodiode 207 connected to the control circuit board 204. The photodiode 207 is located between the upper partition 202 and the lower partition 203 and directly below the receiving hole 206.

[0077] Furthermore, the light receiving component also includes a second lens 208 disposed between the second receiving hole 206 and the photodiode 207 .

[0078] Furthermore, the light receiving component also includes an indicator light 209 disposed on one side of the outer portion of the second housing 201 , and the indicator light 209 is connected to the second control circuit board 204 .

[0079] In this embodiment, continue to refer to Figure 14-17 The receiving part 2 also includes an optical axis adjustment component 2, which includes a metal spring 210 embedded in a through groove 2 on the other side of the lower partition 203, a through hole 211 is opened in the middle below the metal spring 210, and a pin 212 is matched inside the through hole 211, one end of the pin 212 is connected to the side wall of the through groove 2, and a folding wing plate 213 is provided in the middle of the metal spring 210 along its thickness direction.

[0080] Furthermore, the second optical axis adjustment component also includes a second transverse adjustment bolt 215 threadedly connected to one side of the second housing 201 , and the inner end of the second transverse adjustment bolt 215 penetrates the second housing 201 and abuts against one side of the second folding wing plate 213 .

[0081] The second optical axis adjustment component also includes a second reset adjustment bolt 216 threadedly connected to the other side of the second housing 201 . The inner end of the second reset adjustment bolt 216 penetrates the second housing 201 and contacts the other side of the second folding wing plate 213 .

[0082] The first optical axis adjustment component further includes a second longitudinal adjustment bolt 217 threadedly connected to one side of the second housing 201 . The inner end of the second longitudinal adjustment bolt 217 penetrates the second housing 201 and abuts against the middle of one side of the second metal spring sheet 210 .

[0083] The second optical axis adjustment assembly further includes a second base 214 disposed on the top of the second metal spring 210 for assembling the second lens 208 .

[0084] Among them, the top of the metal spring 210 is a fork-shaped structure 2, the two sides of the bottom of the base 214 are respectively installed on the top of the two sides of the fork-shaped structure 2, the lens 208 is installed on the top of the base 214, and the photodiode 207 is installed in the middle of the fork-shaped structure 2.

[0085] In this embodiment, reference is made again to 14-15, and also to Fig.18The receiving part 2 also includes a self-cleaning component 2, which includes a rubber block 218 embedded in one side of the top of the upper partition 202, a light-through hole 219 connected to the receiving hole 1 205 and the receiving hole 206 is vertically opened in the middle of the rubber block 218, and a slot 220 is horizontally opened in the middle of the rubber block 218. The interior of the slot 220 is matched with a light-transmitting plate 221 used to close the light-through hole 219.

[0086] Furthermore, the self-cleaning component 2 also includes a metal elastic ring 222 arranged on the other side of the top of the upper partition 202. The metal elastic ring 222 is elliptical when there is no external force, and the short axis direction of the metal elastic ring 222 is consistent with the length direction of the light-transmitting plate 221. Both sides of the metal elastic ring 222 are located at both ends of its short axis and are provided with ears 223. The ear 223 on one side is correspondingly hooked in the middle of one end of the light-transmitting plate 221, and the ear 223 on the other side is correspondingly hooked in the top boss of the upper partition 202. An elastic capsule 224 is provided inside the metal elastic ring 222, and the interior of the elastic capsule 224 is filled with a liquid that expands easily when heated, including but not limited to mercury and kerosene.

[0087] In this embodiment, again refer to Figure 14-16 The self-cleaning component 2 also includes a heat sink 225 arranged on the top of the elastic bag 224, and an electric heating wire 226 connected to the control circuit board 204 is arranged in the middle of the top of the heat sink 225. The control circuit board 204 is connected to a timing circuit 2 for controlling the heating interval of the electric heating wire 226. The top of the heat sink 225 is located on both sides of the electric heating wire 226, and a heat dissipation hole 227 is opened above the heat sink 225 on the other side of the top of the shell 201.

[0088] In this embodiment, again refer to Fig.13 The receiving part 2 also includes a mounting base 2, which includes a magnet 236 installed on one side of the bottom of the shell 201, and a plurality of contacts 6 235 installed on the other side of the bottom of the shell 201. The contacts 6 235 are connected to the control circuit board 204 correspondingly, and a flange 2 is set around the bottom edge of the shell 201.

[0089] In this embodiment, again refer to Figure 19-21 The mounting base 2 also includes a bottom shell 228 , and the top and one side of the bottom shell 228 are both provided with a groove surface 2 adapted to the bottom flange 2 of the shell 201 .

[0090] Among them, a magnetic block three 231 is installed on one side of the second groove surface at the top of the bottom shell 228, and the magnetic block three 231 can be magnetically attracted to the magnet two 236. A plurality of contacts four 229 are installed on the other side of the second groove surface at the top of the bottom shell 228, and the contacts four 229 are all connected to the wiring contact pin three 230. The bottom end of the wiring contact pin three 230 passes through the bottom of the bottom shell 228 and is folded to one side of the bottom shell 228. A magnetic block four 234 is installed below the second groove surface on a side surface of the bottom shell 228, and the magnetic block four 234 can be magnetically attracted to the magnet two 236. A plurality of contacts five 232 are installed above the second groove surface on a side surface of the bottom shell 228, and the contacts five 232 are all connected to the wiring contact pin four 233. The bottom end of the wiring contact pin four 233 passes through the bottom of the bottom shell 228 and is folded to the other side of the bottom shell 228.

[0091] Furthermore, this embodiment also provides a preparation process of a patch type through-beam photoelectric switch, comprising the following steps:

[0092] Step 1: Fill the inside of the bag with kerosene or mercury and seal it to prepare an elastic bag 124.

[0093] A metal strip is cut and two hanging ears 123 are punched out on the metal strip at an interval of half its length, which are then welded into a ring shape and extruded into an elliptical shape, and quenched and annealed to maintain its elasticity, thereby preparing a metal elastic ring 122.

[0094] The acrylic plate is cut and a hole is drilled in the middle of one end thereof for hooking with the hanging ear 123 to prepare a light-transmitting plate 121.

[0095] The rubber plate is cut, and a light-through hole 119 and a slot 120 are drilled inside the rubber plate to prepare a rubber block 118 .

[0096] The metal sheet is stamped to integrally manufacture a metal spring sheet 110 , a through hole 111 and a folding wing plate 113 .

[0097] A circular sheet of metal is punched to prepare a base 114, and the base 114 is welded to a metal spring sheet 110 to prepare a metal spring sheet 110 and a base 114 assembly.

[0098] Step 2: Solder the required electronic components on the circuit board and solder the timing circuit to prepare a control circuit board 104.

[0099] Step 3: Perform 3D modeling on the shell 101 according to the size.

[0100] A hole for installing an indicator light 109 is set on one side of the housing 101.

[0101] An emission hole 105 is disposed on one side of the top of the shell 101 , and an emission hole 2 106 is disposed inside one side of the upper partition 102 .

[0102] A heat dissipation hole 127 is provided on the other side of the top of the shell 101, a boss for hooking a metal elastic ring 122 is provided on the other side of the top of the upper partition 102, and limiting columns are provided on the top of the upper partition 102 and at the four corners of the boss. The height of the limiting column is consistent with the height of the metal elastic ring 122, and the gap between the limiting column and the heat dissipation hole 127 is used to embed the heat sink 125. A baffle is provided on one side of the emitting hole 106, and the gap between the upper partition 102 and the shell 101, as well as the baffle, is used to embed the rubber block 118.

[0103] An embedding groove is provided on one side of the inner portion of the lower partition plate 103 for embedding a control circuit board 104 .

[0104] A through slot 1 is provided on the other side of the lower partition 103 for embedding a metal spring sheet 110 , and the length of the through slot 1 is greater than the width of the metal spring sheet 110 , and the width of the through slot 1 is consistent with the thickness of the metal spring sheet 110 .

[0105] The shell 101 is divided into two parts, wherein a plurality of butt joint protrusions are arranged inside one half of the shell 101, and a plurality of butt joint grooves are arranged inside the other half of the shell 101.

[0106] The pin 112 is located on the through slot 1 of one half of the shell 101 , and a column groove is correspondingly provided on the through slot 1 of the other half of the shell 101 .

[0107] An internal thread column cooperating with a longitudinal adjustment bolt 117 is arranged at the middle of the metal spring sheet 110 inside one half of the shell 101, and internal thread columns cooperating with a transverse adjustment bolt 115 and a reset adjustment bolt 116 are arranged at both sides of the folding wing plate 113 inside the other half of the shell 101.

[0108] A hole for installing magnet 136 is set at the bottom of one half of the shell 101, and a hole for installing contact 3 135 is set at the bottom of the other half of the shell 101.

[0109] Finally, the shell 101 is prepared by injection molding process.

[0110] Step 4: 3D model the bottom shell 128 according to the size, and set the holes for installing contact 129, wiring contact pin 130, magnetic block 131, contact 2 132, wiring contact pin 2 133 and magnetic block 2 134, and divide the bottom shell 128 into two, wherein a plurality of docking protrusions are set inside one half of the bottom shell 128, and a plurality of docking grooves are set inside the other half of the bottom shell 128.

[0111] Finally, the bottom shell 128 is prepared by injection molding process.

[0112] Step 5: Assemble and weld the components prepared in steps 1 to 4 accordingly.

[0113] Step 6: Use laser printing or labeling technology to display the corresponding text symbols of the instructions on the shell 101 and the bottom shell 128, and finally prepare the emission part 1.

[0114] Step 7: Follow steps 1 to 6 to finally prepare the receiving part 2.

[0115] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chip-type through-beam photoelectric switch, comprising a transmitting part (1) and a receiving part (2), characterized in that: The transmitting part (1) comprises a shell body (101), an upper partition plate (102) is provided at the upper part of the shell body (101), a lower partition plate (103) is provided at the lower part of the shell body (101), a transmitting hole (105) is provided at one side of the top of the shell body (101), and a transmitting hole (106) is provided at one side of the upper partition plate (102) directly below the transmitting hole (105); The emitting portion (1) further comprises a light emitting assembly, comprising a control circuit board (104) embedded in one side of the lower partition (103), and an infrared diode (107) connected to the control circuit board (104), wherein the infrared diode (107) is located between the upper partition (102) and the lower partition (103) and directly below the emitting hole (106); The light emitting assembly further comprises a lens 1 (108) disposed between the second emitting hole (106) and the infrared diode (107); The transmitting part (1) further comprises an optical axis adjustment component (1), wherein the optical axis adjustment component (1) comprises a metal spring (110), a horizontal adjustment bolt (115), a reset adjustment bolt (116) and a vertical adjustment bolt (117); The metal spring sheet (110) is embedded in the through groove (1) on the other side of the lower partition (103), and a folding wing plate (113) is provided in the middle of the metal spring sheet (110) along its thickness direction; The transverse adjustment bolt 1 (115) is connected to one side of the shell 1 (101), and the inner end thereof passes through the shell 1 (101) and abuts against one side of the folding wing plate 1 (113); The reset adjustment bolt 1 (116) is connected to the other side of the shell 1 (101), and the inner end thereof passes through the shell 1 (101) and contacts the other side of the folding wing plate 1 (113); The longitudinal adjustment bolt 1 (117) is connected to one side of the shell 1 (101), and the inner end thereof passes through the shell 1 (101) and abuts against the middle of one side of the metal spring sheet 1 (110).

2. A SMD type through-beam photoelectric switch according to claim 1, characterized in that: The optical axis adjustment component 1 includes a base 1 (114) disposed on the top of a metal spring sheet 1 (110).

3. A SMD type through-beam photoelectric switch according to claim 2, characterized in that: The self-cleaning component 1 includes a heat dissipation plate 1 (125) disposed on the top of the elastic bag 1 (124).

4. The SMD type through-beam photoelectric switch according to claim 1, characterized in that: The receiving part (2) comprises a second housing (201).

5. The SMD type through-beam photoelectric switch according to claim 4, characterized in that: The second optical axis adjustment component also includes a second horizontal adjustment bolt (215) threadedly connected to one side of the second housing (201).

6. A SMD type through-beam photoelectric switch according to claim 5, characterized in that: The receiving part (2) includes a self-cleaning component 2.

7. A SMD type through-beam photoelectric switch according to claim 6, characterized in that: The receiving portion (2) also includes a mounting base 2.

8. The SMD type through-beam photoelectric switch according to claim 7, characterized in that: The light emitting assembly further comprises an indicator light 1 (109) arranged on one side of the exterior of the housing 1 (101), wherein the indicator light 1 (109) is connected to the control circuit board 1 (104).

9. A process for preparing a patch type through-beam photoelectric switch, implemented according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, filling the inside of the bag with kerosene or mercury and sealing it to prepare an elastic bag 1 (124); Step 2: soldering the required electronic components on the circuit board and soldering the timing circuit to prepare a control circuit board 1 (104); Step 3: 3D modeling of the shell 1 (101) according to the size; Step 4: Prepare the bottom shell 1 (128) by injection molding process; Step 5, assembling and welding the components prepared in steps 1 to 4 accordingly; Step 6: Use laser printing or labeling technology to display the text symbols of the instructions on the shell 1 (101) and the bottom shell 1 (128) to finally prepare the emission part (1); Step 7: Follow steps 1 to 6 to finally prepare the receiving part (2).

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