Exposure equipment for foil type resistance strain gauge production

Abstract

The utility model relates to the technical field of exposure equipment, in particular to exposure equipment for producing a foil type resistance strain gauge, which comprises an operation table, a supporting seat, a gland, a tensioning assembly, a push plate, a linear driving assembly and a lifting driving assembly. A case is arranged on the operating table, an exposure assembly and a vacuumizing assembly are arranged in the case, and a door opening is formed in the case; a sliding base is arranged at the bottom of the supporting base and slidably connected with the operation table, and a perforated plate is arranged in the supporting base. The gland is rotatably arranged on and attached to the supporting seat and is rotatably connected with the connecting rod, and the connecting rod is rotatably connected with the first sliding block; the tensioning assembly is connected with the supporting base and the first sliding block. The push plate is in sliding connection with the porous plate; the linear driving assembly is arranged on the operation table and drives the supporting base and the gland to penetrate through the door opening. The lifting driving assembly is in driving connection with the push plate. According to the utility model, the gland can be automatically opened and closed, and the exposed strain gauge can be automatically ejected out after the gland is opened.

Description

Technical Field

[0001] This utility model relates to the field of exposure equipment technology, and in particular to an exposure equipment for the production of foil resistance strain gauges. Background Technology

[0002] A strain gauge is a sensor used to measure the strain on the surface of an object. It is widely used in engineering, construction, machinery, and other fields, converting minute deformations of materials into measurable electrical signals or other forms of data using principles such as resistance, vibrating wire, or optical fiber. Strain gauges are commonly used as sensing elements in precision load cells and are among the most accurate load measuring devices. During the manufacturing process, strain gauges require exposure to solidify a pattern from an exposure template onto the workpiece; however, traditional exposure equipment is too simple in structure and needs improvement.

[0003] The technical solution disclosed in Chinese Patent No. CN211979420U increases exposure efficiency by setting up a structure with multiple lamp tubes, enabling exposure processing with strain gauges of various sizes and expanding adaptability.

[0004] However, the device still has shortcomings: it requires frequent opening and closing of the drawer-type adsorption plate and manual transfer of the strain gauge, which is cumbersome to operate and the strain gauge body is easily damaged during the transfer of the strain gauge on the adsorption plate. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an exposure device for the production of foil resistance strain gauges.

[0006] The technical solution of this utility model is: an exposure device for producing foil resistance strain gauges, including an operating table, a machine box on the operating table, an exposure component and a vacuuming component inside the machine box, and a door opening on the machine box.

[0007] The support base has a slide at its bottom, which is slidably connected to the operating table. An air guide chamber is provided inside the support base, and a perforated plate is provided on the inner wall of the air guide chamber.

[0008] A pressure cap is rotatably mounted on and fits against a support base. The pressure cap is rotatably connected to a connecting rod, which is rotatably connected to a first slider. The first slider is slidably connected to the support base.

[0009] The tensioning component is mounted on the support base, and its movable end is connected to the first slider.

[0010] Push plate, the push plate is slidably connected to the perforated plate, and the upper surface of each push plate is flush with the upper surface of the perforated plate;

[0011] A linear drive assembly is mounted on the control panel and drives the support base and the pressure cover through the doorway;

[0012] And a lifting drive assembly, which connects the control panel, slide and push plate to push the push plate up after the pressure cover is opened.

[0013] Preferably, the exposure assembly includes a movable frame, a first cylinder, and an exposure lamp; the movable frame is disposed inside the housing and slidably connected to its inner wall; the body of the first cylinder is connected to the housing, and the push rod of the first cylinder is connected to the movable frame; the exposure lamp is disposed on the movable frame, a through hole is provided on the movable frame below the exposure lamp, and a heat sink is provided on the movable frame, the heat sink being connected to the heating end of the exposure lamp.

[0014] Preferably, the movable frame is provided with a sliding cover that is slidably connected to it, and the movable frame is designed with a second cylinder to drive the sliding cover to slide. The sliding cover is pushed or pulled by the second cylinder to open or close the through hole.

[0015] Preferably, a heat sink is installed on the chassis, and an air intake vent is provided on the chassis that communicates with the interior of the heat sink. A dust filter is installed inside the air intake vent, and a light shield is installed outside the air intake vent.

[0016] Preferably, the vacuum pump assembly includes a vacuum pump, the body of which is housed inside a chassis, the exhaust end of which is connected to the outside, the input end of which is connected to a bellows, and the other end of which is inserted into the air guide chamber and connected to its interior.

[0017] Preferably, the tensioning assembly includes a fixed seat and a spring; the fixed seat is connected to a support seat, and a slide rod is slidably connected to the fixed seat. One end of the slide rod is connected to a first slider, and the other end of the slide rod is connected to a second slider. The fixed seat is located between the first slider and the second slider; the spring is sleeved on the slide rod, and both ends of the spring abut against the fixed seat and the second slider, respectively.

[0018] Preferably, a sliding groove is provided on the slide block.

[0019] Preferably, the lifting drive assembly includes a movable plate, a lead screw, a worm gear, a worm, a gear, and a rack; the movable plate is located in a slide groove and slidably connected to its inner wall, and a plurality of limit rods are provided on the movable plate, each limit rod passing through the support seat and connected to the push plate on the corresponding side; the lead screw is located in the slide groove and rotatably connected to the slide, the lead screw passing through the movable plate and helically connected to it; the worm gear is coaxially connected to the lead screw, the worm is rotatably connected to the slide, and the worm and worm gear mesh; the gear is coaxially connected to the worm, and the rack is connected to the operating table.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] By setting a rotating connection structure between the pressure cap and the support base, and connecting the two through a connecting rod, a first slider, and a tensioning component, the pressure cap remains open when the support base is outside the chassis, and automatically closes to the support base when the support base is inside the chassis, eliminating the need for manual opening and closing. Furthermore, by setting a lifting drive component, after the support base is pulled out of the chassis, the lifting drive component automatically activates and pushes up the top plate to lift the strain gauge that has completed exposure, facilitating non-contact transfer of the strain gauge by the operator. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the chassis;

[0024] Figure 3 A schematic diagram of the connection structure of the various components on the movable frame;

[0025] Figure 4 This is a schematic diagram of the connection structure of the various components on the support base;

[0026] Figure 5 This is a schematic diagram of the connection structure between the lifting drive mechanism and the push plate.

[0027] Reference numerals: 1. Operating table; 2. Chassis; 201. Doorway; 3. Movable frame; 301. Through hole; 4. First cylinder; 5. Heat sink; 6. Exposure lamp; 7. Sliding cover; 8. Second cylinder; 9. Guide wheel; 10. Bellows; 11. Vacuum pump; 12. Support base; 121. Slide block; 122. Perforated plate; 13. Linear module; 14. Pressure cover; 15. Connecting rod; 16. First slider; 17. Slide rod; 18. Second slider; 19. Fixed base; 20. Spring; 21. Push plate; 22. Lifting drive assembly; 221. Movable plate; 222. Limiting rod; 223. Lead screw; 224. Worm gear; 225. Worm; 226. Gear; 227. Rack. Detailed Implementation

[0028] Example 1

[0029] like Figures 1-4As shown, this utility model proposes an exposure device for producing resistance strain gauges, including an operating table 1, a support base 12, a pressure cap 14, a tensioning assembly, a push plate 21, a linear drive assembly, and a lifting drive assembly 22. The operating table 1 has support feet at its bottom, with casters at the bottom of the support feet and self-locking components on the casters. A housing 2 is mounted on the operating table 1, housing the exposure assembly and a vacuum assembly, and a doorway 201 is provided on the housing 2. The exposure assembly includes a movable frame 3, a first cylinder 4, and an exposure lamp 6. The movable frame 3 is located inside the housing 2 and slidably connected to its inner wall. The body of the first cylinder 4 is connected to the housing 2, and the push rod of the first cylinder 4 is connected to the movable frame 3. The exposure lamp 6 is mounted on the movable frame 3, with a through hole 301 below the exposure lamp 6, and a heat sink 5 is mounted on the movable frame 3, connected to the heating end of the exposure lamp 6. A heat sink is installed on the chassis 2, and an air inlet communicating with its interior is provided on the chassis 2. A dust filter is installed inside the air inlet, and a light shield is installed outside the air inlet. The vacuum assembly includes a vacuum pump 11, the body of which is located inside the chassis 2. The exhaust end of the vacuum pump 11 is connected to the outside, and the input end of the vacuum pump 11 is connected to a bellows 10. The other end of the bellows 10 is inserted into the air guide cavity and communicates with its interior. A slide 121 is provided at the bottom of the support base 12. The slide 121 is slidably connected to the operating table 1. A sliding groove is provided on the slide 12. An air guide cavity is provided inside the support base 12, and a perforated plate 122 is provided on the inner wall of the air guide cavity. A pressure cap 14 is rotatably mounted on the support base 12 and fits against it. The pressure cap 14 is rotatably connected to a connecting rod 15, and the connecting rod 15 is rotatably connected to a first slider 16. The first slider 16 is slidably connected to the support base 12. A tensioning assembly is mounted on the support base 12, and the movable end of the tensioning assembly is connected to the first slider 16. The tensioning assembly includes a fixed base 19 and a spring 20. The fixed base 19 is connected to the support base 12, and a slide rod 17 is slidably connected to it. One end of the slide rod 17 is connected to the first slider 16, and the other end is connected to the second slider 18. The fixed base 19 is located between the first slider 16 and the second slider 18. The spring 20 is sleeved on the slide rod 17, and both ends of the spring 20 abut against the fixed base 19 and the second slider 18, respectively. The push plate 21 is slidably connected to the perforated plate 122, and the upper surface of each push plate 21 is flush with the upper surface of the perforated plate 122. The linear drive assembly includes, but is not limited to, a linear module 13. The body of the linear module 13 is connected to the operating table, and the linear module 13 extends into the interior of the housing 2 along the doorway 201. The output end of the linear module 13 is connected to the slide base 121. The lifting drive assembly 22 is connected to the slide base 121 and drives the push plate 21 to rise or fall.

[0030] In this embodiment, the strain gauge to be exposed is placed flat on the porous plate 122. Then, the linear module 13 is activated, which drives the slide 121 to slide and pushes the support 12 into the housing 2 along the doorway 201. At this time, since the cover 14 is in the open state, the back plate of the cover 14 is blocked by the housing 2 and gradually fits against the support 12, thereby pressing the strain gauge onto the porous plate 122. After the support 12 is moved into place, the vacuum pump 11 is activated to evacuate the air guide cavity, thereby making the strain gauge fit tightly and fixed. Then, the exposure lamp 6 is turned on, and the height of the lamp source is adjusted by the first cylinder 4. After the strain gauge is exposed, the linear module 13 is activated to move the support 12 outward. After the support 12 is separated from the housing 2, the cover 14 is automatically opened by the spring tension pushing the second slider 18. Then, the lifting drive assembly 22 drives the push plate 21 to move upward, which can lift the strain gauge that has been exposed from the porous plate 122.

[0031] Example 2

[0032] like Figure 2 and Figure 3 As shown, the present invention proposes an exposure device for producing foil resistance strain gauges. Compared with the first embodiment, the movable frame 3 is provided with a sliding cover 7 that is slidably connected to it, and the movable frame 3 is designed with a second cylinder 8 to drive the sliding cover 7 to slide. The sliding cover 7 is pushed and pulled by the second cylinder 8 to open or close the through hole 301.

[0033] In this embodiment, the light source of the exposure lamp 6 is isolated by pushing and pulling the sliding cover 7, so as to avoid frequently switching the exposure lamp 6 on and off during the continuous exposure of multiple strain gauges.

[0034] Example 3

[0035] like Figure 4 and Figure 5 As shown, the exposure equipment for producing foil resistance strain gauges proposed in this utility model, compared with Embodiment 1, includes a lifting drive assembly 22 comprising a movable plate 221, a lead screw 223, a worm gear 224, a worm 225, a gear 226, and a rack 227 in its lifting drive assembly 221. The movable plate 221 is located within a sliding groove and slidably connected to its inner wall. Several limiting rods 222 are provided on the movable plate 221, each of which passes through the support base 12 and is connected to the push plate 21 on the corresponding side. The lead screw 223 is located within the sliding groove and rotatably connected to the slide base 121. The lead screw 223 passes through the movable plate 221 and is helically connected to it. The worm gear 224 is coaxially connected to the lead screw 223, and the worm 225 is rotatably connected to the slide base 121, with the worm 225 meshing with the worm gear 224. The gear 226 is coaxially connected to the worm 225, and the rack 227 is connected to the operating table 1, located outside the machine housing 2.

[0036] In this embodiment, with the support base 12 outside the housing 2 and the pressure cover 14 in the open state, the drive linear module 13 continues to move the support base 12 away from the housing 2. During the movement of the support base 12, the gear 226 meshes with the rack 227 and drives the gear 226 to rotate through the rack 227, which in turn drives the worm gear 225 to rotate. The worm gear 225 then drives the worm wheel 224 and the lead screw 223 to rotate. The rotating lead screw 223 drives the movable plate 221 to rise and pushes the push plate 21 through the limit rod 222, lifting the strain gauge that has been exposed on the perforated plate 122. This facilitates the non-contact transfer of the strain gauge by the operator. Furthermore, this structure has a reverse self-locking function, which can effectively ensure the precise height of the push plate 21 in each state.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An exposure device for producing foil resistance strain gauges, characterized in that, include An operating table (1) is provided on the operating table (1), and a machine box (2) is provided inside the machine box (2). An exposure component and a vacuum component are provided inside the machine box (2), and a doorway (201) is provided on the machine box (2). Support base (12), slide (121) is provided at the bottom of support base (12), slide (121) is slidably connected to operating table (1), air guide cavity is provided inside support base (12), and perforated plate (122) is provided on the inner wall of air guide cavity. A pressure cap (14) is rotatably mounted on a support base (12) and fits against it. The pressure cap (14) is rotatably connected to a connecting rod (15). The connecting rod (15) is rotatably connected to a first slider (16). The first slider (16) is slidably connected to the support base (12). The tensioning assembly is mounted on the support base (12), and the movable end of the tensioning assembly is connected to the first slider (16); Push plate (21) is slidably connected to perforated plate (122), and the upper surface of each push plate (21) is flush with the upper surface of perforated plate (122). A linear drive assembly is mounted on the control panel (1) and drives the support base (12) and the pressure cap (14) through the doorway (201). And a lifting drive assembly (22) that connects the operating table (1), the slide (121) and the push plate (21) to push the push plate (21) after the pressure cover (14) is opened.

2. The exposure equipment for producing foil resistance strain gauges according to claim 1, characterized in that, The exposure assembly includes a movable frame (3), a first cylinder (4), and an exposure lamp (6); the movable frame (3) is set inside the housing (2) and slidably connected to its inner wall; the body of the first cylinder (4) is connected to the housing (2), and the push rod of the first cylinder (4) is connected to the movable frame (3); the exposure lamp (6) is set on the movable frame (3), and a through hole (301) is provided on the movable frame (3) below the exposure lamp (6), and a heat sink (5) is provided on the movable frame (3), and the heat sink (5) is connected to the heating end of the exposure lamp (6).

3. The exposure equipment for producing foil resistance strain gauges according to claim 2, characterized in that, The movable frame (3) is provided with a sliding cover (7) that is slidably connected to it, and the movable frame (3) is designed with a second cylinder (8) to drive the sliding cover (7) to slide. The sliding cover (7) is pushed and pulled by the second cylinder (8) to open or close the through hole (301).

4. The exposure equipment for producing foil resistance strain gauges according to claim 1, characterized in that, A heat sink is installed on the chassis (2), and an air inlet is provided on the chassis (2) that communicates with its interior. A dustproof mesh is installed inside the air inlet, and a light shield is installed outside the air inlet.

5. The exposure equipment for producing foil resistance strain gauges according to claim 1, characterized in that, The vacuum pump assembly includes a vacuum pump (11), the body of which is located inside the housing (2). The exhaust end of the vacuum pump (11) is connected to the outside, and the input end of the vacuum pump (11) is connected to the bellows (10). The other end of the bellows (10) is inserted into the air guide chamber and connected to its interior.

6. The exposure equipment for producing foil resistance strain gauges according to claim 1, characterized in that, The tensioning assembly includes a fixed seat (19) and a spring (20); the fixed seat (19) is connected to the support seat (12), and a slide rod (17) is provided on the fixed seat (19) and slidably connected thereto. One end of the slide rod (17) is connected to the first slider (16), and the other end of the slide rod (17) is connected to the second slider (18). The fixed seat (19) is located between the first slider (16) and the second slider (18); the spring (20) is sleeved on the slide rod (17), and both ends of the spring (20) abut against the fixed seat (19) and the second slider (18) respectively.

7. The exposure equipment for producing foil resistance strain gauges according to claim 1, characterized in that, A sliding groove is provided on the slide (121).

8. The exposure equipment for producing foil resistance strain gauges according to claim 7, characterized in that, The lifting drive assembly (22) includes a movable plate (221), a lead screw (223), a worm gear (224), a worm (225), a gear (226), and a rack (227); the movable plate (221) is located in the slide groove and is slidably connected to its inner wall; several limiting rods (222) are provided on the movable plate (221), and each limiting rod (222) passes through the support base (12) and is connected to the push plate (21) on the corresponding side; the lead screw ( 223) is located in the slide groove and is rotatably connected to the slide block (121). The lead screw (223) passes through the movable plate (221) and is helically connected to it. The worm wheel (224) is coaxially connected to the lead screw (223). The worm (225) is rotatably connected to the slide block (121) and the worm (225) meshes with the worm wheel (224). The gear (226) is coaxially connected to the worm (225). The rack (227) is connected to the operating table (1).

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