Turnover jig

Abstract

The present invention relates to the field of intelligent fixture technology, in particular to a flip mold clamping fixture, which includes a base plate, on which a supporting flip assembly, a bearing assembly, a clamping assembly and a rotating assembly are arranged. The supporting flip assembly has a flip support seat and a supporting frame that rotates around the flip support seat and supports the plastic part of the workpiece to be processed, and the flip support seat is fixed on a receiving plate; the bearing assembly is fixed on the receiving plate, and has a bearing seat that limits the plug-in part of the workpiece to be processed; the clamping assembly is fixed on the front side end of the receiving plate, and has a mounting frame and a clamping frame that rotates around the mounting frame and clamps the workpiece to be processed; the rotating assembly includes a rotating frame, a driving module that drives the rotating frame to rotate, and a limiting frame that limits the maximum rotation angle of the rotating frame. The fixture of the present invention clamps the workpiece to be processed by the clamping assembly, rotates the workpiece by the rotating assembly to perform tinning and laser spot welding, and finally clamps the workpiece. It has a high degree of automation, which improves the production efficiency and product quality of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent jigs, in particular to a flip mold clamping jig. Background Art

[0002] Temperature and pressure sensors are installed inside a vehicle (e.g., in the engine), sealed with a threaded interface and simultaneously detecting medium pressure and temperature. These sensors consist of a ceramic pressure module with a signal processing chip and a thermistor. The thermistor is encapsulated within an NTC base, which snaps into place with a connector to form a cavity for positioning the ceramic pressure module. This cavity is protected by a protective housing. After the circuit and housing are manufactured, they are spot welded and then molded, followed by gluing and testing. The existing spot welding process for automotive temperature and pressure sensors uses a two-step process, followed by manual mold closing, resulting in low efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, such as low process efficiency, low degree of standardization and low product qualification rate, and to provide an automated flip mold clamping fixture.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a flip mold clamping fixture, including a bottom plate, on which is provided:

[0005] A supporting flip assembly, comprising a flip support seat and a supporting frame rotating around the flip support seat and supporting the plastic workpiece to be processed, wherein the flip support seat is fixed on a receiving plate;

[0006] A bearing assembly, which is fixed on the receiving plate and has a bearing seat for limiting the position of the connector of the workpiece to be processed, and a magnetic member is provided on the bearing seat;

[0007] A pressing assembly is fixed to the front end of the receiving plate and comprises a mounting frame and a pressing frame that rotates around the mounting frame and presses the workpiece to be processed;

[0008] The rotating assembly includes a rotating frame, a driving module for driving the rotating frame to rotate, and a limiting frame for limiting the maximum rotation angle of the rotating frame. The rotating frame is fixed under the receiving plate, the driving module is arranged on one side of the rotating frame, and the limiting frame is arranged under the rotating frame.

[0009] Furthermore, the cross section of the supporting frame is wedge-shaped, and its bottom surface is an inclined surface. The lower edge of the inclined surface extends outward and downward to form an outer protrusion, and one end edge of the receiving plate protrudes upward to form a bump that presses against the outer protrusion.

[0010] Furthermore, the supporting frame is provided with at least one supporting groove, which is U-shaped, with an avoidance step at its upper opening and a groove at its bottom that matches the protruding section of the plastic workpiece to be processed.

[0011] Furthermore, there are two flip support seats, which are respectively arranged on both sides of the supporting frame. The middle parts of both sides of the supporting frame are protruded to form mounting parts, and the mounting parts are connected to the flip support seats through a flip shaft.

[0012] Furthermore, the bearing seat is provided with a receiving cavity with the same number of upper and lower openings as the supporting grooves, and a clearance groove is provided opposite to the upper opening edge of the receiving cavity, and a convex strip is protruded on the inner wall of the receiving cavity to cooperate with the groove portion of the connector of the workpiece to be processed.

[0013] Furthermore, a plunger extending into the accommodating cavity is provided on the upper portion of the front end surface of the bearing seat, and the plunger cooperates with the notch portion of the connector of the workpiece to be processed.

[0014] Furthermore, a boss for mounting a magnetic component is provided in the middle of the front end edge of the supporting seat.

[0015] Furthermore, the clamping frame includes two connecting arms, clamping arm 1 and clamping arm 2, the connecting arm is L-shaped, the clamping arm 1 is connected to one end of the horizontal section on the connecting arm, and the clamping arm 1 is provided with a sinking section with the same number as the accommodating cavities, and the sinking section contacts the upper end surface of the connector of the workpiece to be processed, and the clamping arm 2 is connected to the connection between the horizontal section and the vertical section on the connecting arm, and the clamping arm 2 is provided with a clamping strip with the same number as the accommodating cavities.

[0016] Furthermore, spring pins are respectively provided on the end of the pressing strip, on the pressing arms at both ends of the sinking section, and on the front end surface of the sinking section.

[0017] Furthermore, the pressing frame further includes a reinforcing arm connected between the first pressing arm and the second pressing arm, and the reinforcing arm is provided with a magnetic block attracted to the magnetic component.

[0018] Furthermore, a bent pick is provided at one end of the pressing arm.

[0019] Furthermore, the driving module includes a rotating shaft, a rotating bearing seat, a gear, a rack, a slider and a guide rail. The rotating shaft passes through the rotating frame, and both ends of the rotating shaft extend out of the rotating frame. One end of the rotating shaft is installed on the rotating bearing seat through a bearing, and the other end of the rotating shaft is also installed on the rotating bearing seat through a bearing near the end. A gear is installed at the end of the other end of the rotating shaft, and a rack meshing with the gear is provided below the gear. The rack is installed on a rack connecting plate, and the rack connecting plate is fixed on the slider. The slider is set on the guide rail, and the guide rail is connected to the base plate through a guide rail connector.

[0020] Furthermore, the rotating frame includes two connecting plates and a limiting plate, the two connecting plates are fixed to the two side edges of the limiting plate, the top of the connecting plate is connected to the receiving plate, and the rotating shaft is set through the two connecting plates.

[0021] Furthermore, the limiting frame supports the rotating frame, the width of the limiting frame is less than half the width of the limiting plate, and a limiting inclined surface is provided at the rear end of the limiting frame, and a magnet is provided on the limiting inclined surface.

[0022] The beneficial effects of the present invention are:

[0023] The jig of the present invention presses the workpiece to be processed by a pressing component, rotates the workpiece by a rotating component to perform tinning and laser spot welding, and finally closes the mold on the workpiece. The process is simple, the floor space is small, and the degree of automation and standardization is high, which greatly improves the production efficiency and product quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 It is a structural schematic diagram of a workpiece to be processed according to the present invention.

[0026] Figure 2 It is a structural schematic diagram of the present invention.

[0027] Figure 3 (a) is a schematic structural diagram of the supporting flip assembly in the present invention.

[0028] Figure 3 (b) Yes Figure 3 (a) Schematic diagram of the structure in another direction.

[0029] Figure 4 It is a structural diagram of the load-bearing component in the present invention.

[0030] Figure 5 It is a structural schematic diagram of the compression assembly in the present invention.

[0031] Figure 6 It is a structural diagram of the driving module in the present invention.

[0032] Figure 7 It is a structural schematic diagram of the limiting frame in the present invention.

[0033] In the picture:

[0034] 1. Bottom plate,

[0035] 2. Support flip assembly, 21. Flip support seat, 22. Support frame, 221. Outer protrusion, 222. Support groove, 2221. Avoidance step, 2222. Groove, 223. Mounting part, 23. Flip axis,

[0036] 3. Bearing assembly, 31. Bearing seat, 311. Accommodation cavity, 3111. Giving way groove, 3112. Raised strip, 312. Boss, 32. Magnetic member, 33. Plunger,

[0037] 4. Clamping assembly, 41. Mounting frame, 42. Clamping frame, 421. Connecting arm, 4221. Sinking section, 422. Clamping arm 1, 4222. Bending pick, 423. Clamping arm 2, 4231. Clamping strip, 43. Spring pin, 44. Magnetic block,

[0038] 5. Rotating assembly, 51. Rotating frame, 511. Connecting plate, 512. Limiting plate, 52. Driving module, 521. Rotating shaft, 522. Rotating bearing seat, 523. Gear, 524. Rack, 525. Guide rail, 526. Rack connecting plate, 527. Slider, 528. Guide rail connector, 53. Limiting frame, 531. Limiting ramp, 54. Magnet,

[0039] 6. Adapter plate, 61. Bump,

[0040] 10. Workpiece, 101. Piezoelectric ceramics, 102. Connectors, 103. Flexible printed circuit boards, 104. Plastic parts. DETAILED DESCRIPTION

[0041] The present invention will now be further described with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] like Figure 1 As shown, the workpiece 10 to be processed is a temperature and pressure sensor, mainly including a piezoelectric ceramic 101, a connector 102, a flexible circuit board 103, and a plastic part 104. The workpiece needs to be spot-tinned on a jig, with the flexible circuit board 103 connected to the connector 102 and the plastic part 104 respectively. After spot-tinning and laser welding, the mold needs to be closed, and the connector 102 and the plastic part 104 are snapped together. The flexible circuit board 103 integrates the pressure module and the temperature sensor module, and the piezoelectric ceramic 101 and the flexible circuit board 103 are already fixed. Before spot welding, the existing technology first spot-welds the piezoelectric ceramic 101 to the base surface of the connector 102, then transfers it to the next workstation. The semi-finished product is then snapped onto the NTC base and placed on a jig for spot welding. Finally, the solder joint quality is manually visually inspected, and qualified products are transported to the next station for manual mold closing.

[0043] like Figure 2 As shown, a flip mold fixture includes a base plate 1, on which are provided a supporting flip assembly 2, a bearing assembly 3, a clamping assembly 4 and a rotating assembly 5. The supporting flip assembly 2 has a flip support seat 21 and a supporting frame 22 that rotates around the flip support seat 21 and supports the plastic part of the workpiece 10 to be processed. The flip support seat 21 is fixed on a receiving plate 6; the bearing assembly 3 is fixed on the receiving plate 6, and it has a bearing seat 31 for limiting the plug-in parts of the workpiece 10 to be processed, and a magnetic member 32 is provided on the bearing seat 31; the clamping assembly 4 is fixed on the front side end of the receiving plate 6, and it has a mounting frame 41 and a clamping frame 42 that rotates around the mounting frame 41 and presses the workpiece 10 to be processed; the rotating assembly 5 includes a rotating frame 51, a driving module 52 that drives the rotating frame 51 to rotate, and a limiting frame 53 that limits the maximum rotation angle of the rotating frame 51. The rotating frame 51 is fixed below the receiving plate 6, the driving module 52 is arranged on one side of the rotating frame 51, and the limiting frame 53 is arranged below the rotating frame 51.

[0044] like Figure 3 (a) and Figure 3 As shown in (b), the supporting flip assembly 2 comprises a supporting frame 22 having a wedge-shaped cross-section and an inclined bottom surface. The lower edge of the inclined surface extends outward and downward to form an external protrusion 221. One end edge of the receiving plate 6 protrudes upward to form a bump 61 that abuts against the external protrusion 221. In this embodiment, the supporting frame 22 has two U-shaped supporting grooves 222, each with a relief step 2221 at its upper opening and a groove 2222 at its bottom that mates with the protruding section of the plastic workpiece to be processed. Two flip support seats 21 are provided, one on each side of the supporting frame 22. Mounting portions 223 protrude from the middle of each side of the supporting frame 22. The mounting portions 223 are connected to the flip support seat 21 via a flip shaft 23.

[0045] like Figure 4 As shown, the support base 31 of the support assembly 3 is provided with a receiving cavity 311 with two upper and lower openings. A recess 3111 is provided at the edge of the upper opening of the receiving cavity 311. A protruding strip 3112 is formed on the inner wall of the receiving cavity 311 to mate with the groove of the connector of the workpiece 10 to be processed. A plunger 33 is provided at the upper front end of the supporting base 31, extending into the receiving cavity 311. The plunger 33 mates with the notch of the connector of the workpiece 10 to be processed. A boss 312 is provided in the middle of the front edge of the supporting base 31 for mounting the magnetic member 32.

[0046] like Figure 5As shown, the clamping frame 42 of the clamping assembly 4 includes two connecting arms 421, a clamping arm 1 422, and a clamping arm 2 423. The connecting arm 421 is L-shaped. The clamping arm 1 422 is connected to one end of the horizontal section of the connecting arm 421. The clamping arm 1 422 is provided with two sinking sections 4221. The sinking sections 4221 are in contact with the upper end surface of the connector of the workpiece 10 to be processed. The clamping arm 2 423 is connected to the connection between the horizontal section and the vertical section of the connecting arm 421. The clamping arm 2 423 is provided with two clamping strips 4231. Spring pins 43 are respectively provided on the ends of the clamping strips 4231, on the clamping arm 1 422 at both ends of the sinking section 4221, and on the front end surface of the sinking section 4221. Preferably, the pressing frame 42 further comprises a reinforcing arm 424 connected between the first pressing arm 422 and the second pressing arm 423, and the reinforcing arm 424 is provided with a magnetic block 44 attracted to the magnetic member 32. A bent pick 4222 is provided at one end of the first pressing arm 422.

[0047] like Figure 6 As shown, the driving module 52 includes a rotating shaft 521, a rotating bearing seat 522, a gear 523, a rack 524, a slider 527 and a guide rail 525. The rotating shaft 521 passes through the rotating frame 51, and both ends of the rotating shaft 521 extend out of the rotating frame 51. One end of the rotating shaft 521 is mounted on the rotating bearing seat 522 through a bearing, and the other end thereof is also mounted on the rotating bearing seat 522 through a bearing near the end. A gear 523 is mounted on the end of the other end of the rotating shaft 521, and a rack 524 meshing with the gear 523 is provided below the gear 523. The rack 524 is mounted on a rack connecting plate 526, and the rack connecting plate 526 is fixed on the slider 527. The slider 527 is set on the guide rail 525, and the guide rail 525 is connected to the base plate 1 through a guide rail connector 528. The rotating frame 51 includes two connecting plates 511 and a limiting plate 512 . The two connecting plates 511 are fixed to the two side edges of the limiting plate 512 . The top of the connecting plates 511 is connected to the receiving plate 6 . The rotating shaft 521 is set through the two connecting plates 511 .

[0048] like Figure 7 As shown, the limiting frame 53 supports the rotating frame 51 , the width of the limiting frame 53 is less than half the width of the limiting plate 512 , and a limiting inclined surface 531 is provided at the rear end of the limiting frame 53 , on which a magnet 54 is provided.

[0049] Specific working process:

[0050] The flip mold clamping fixture of this embodiment can simultaneously place two workpieces 10 to be processed. After manual material discharge is completed, the cylinder on the external device (the device on which the fixture is installed) pushes the bent paddle 4222 of the clamping frame 42 to close the clamping frame 42. The workpieces 10 to be processed are pressed tightly by the magnetic attraction between the magnetic member 32 and the magnetic block 44. The eight spring pins 43 connected to the clamping frame 42 can prevent excessive clamping force from damaging the workpieces 10 to be processed. After clamping, the protrusion 61 of the receiving plate 6 is in close contact with the outer protrusion 221 of the support frame 22, limiting the support frame 22 from rotating backward.

[0051] After the connector 102 and the flexible circuit board 103 are connected by spot tinning and laser welding, the workpiece 10 needs to be rotated. Another cylinder on an external device (a device mounted on a jig) pushes the rack 524. The rack 524 moves along the guide rail 525 via the slider 527. The engagement of the gear 523 and the rack 524 drives the rotating shaft 521 to rotate successively, finally achieving the rotation of the entire workpiece 10.

[0052] When the rotating shaft 521 rotates, it drives the limiting plate 512 to rotate together until the limiting plate 512 contacts the limiting frame 53. Due to the limiting effect of the upper limit inclined surface 531 of the limiting frame 53, the workpiece 10 stops rotating. At this time, the workpiece 10 has rotated exactly 90 degrees. The spot tinning and laser welding positions of the plastic part 104 are in a horizontal state, and subsequent process steps can be carried out. The magnet 54 provided on the limiting inclined surface 531 uses magnetic attraction to prevent the workpiece 10 from rotating reversely during spot tinning.

[0053] After the soldering is completed, the cylinder on the external device (the device where the jig is installed) pushes the workpiece 10 to return to its original state. At this time, another cylinder on the external device pushes the support frame 22, driving the workpiece 10 to flip around the flip axis 23 until it is close to the vertical position. Then, another cylinder on the external device pushes it to achieve the locking and engagement of the connector 102 and the plastic part 104, thus completing the mold closing.

[0054] The entire process is simple, the fixture occupies a small area, and the degree of automation and standardization is high, which greatly improves the production efficiency and product quality of the workpiece 10.

[0055] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flip mold clamping fixture, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with: A supporting flip assembly (2), the supporting flip assembly (2) comprising a flip support seat (21) and a supporting frame (22) rotating around the flip support seat (21) and supporting a plastic part of a workpiece (10) to be processed, the flip support seat (21) being fixed on a receiving plate (6); A bearing assembly (3), the bearing assembly (3) being fixed on the receiving plate (6), and having a bearing seat (31) for limiting the position of the connector of the workpiece (10) to be processed, and a magnetic member (32) being provided on the bearing seat (31); A pressing assembly (4), the pressing assembly (4) being fixed to the front end of the receiving plate (6), and comprising a mounting frame (41) and a pressing frame (42) rotating around the mounting frame (41) and pressing the workpiece (10) to be processed; A rotating assembly (5), the rotating assembly (5) comprising a rotating frame (51), a driving module (52) for driving the rotating frame (51) to rotate, and a limiting frame (53) for limiting the maximum rotation angle of the rotating frame (51), the rotating frame (51) being fixed below the receiving plate (6), the driving module (52) being arranged on one side of the rotating frame (51), and the limiting frame (53) being arranged below the rotating frame (51); The driving module (52) includes a rotating shaft (521); The supporting frame (22) has a wedge-shaped cross section, and its bottom surface is an inclined surface. The lower edge of the inclined surface extends outward and downward to form an outer protrusion (221). One end edge of the receiving plate (6) protrudes upward to form a protrusion (61) that abuts against the outer protrusion (221). The rotating frame (51) includes two connecting plates (511) and a limiting plate (512), the two connecting plates (511) are fixed to the edges of both sides of the limiting plate (512), the top of the connecting plate (511) is connected to the receiving plate (6), and the rotating shaft (521) is set through the two connecting plates (511); The limiting frame (53) supports the rotating frame (51), the width of the limiting frame (53) is less than half the width of the limiting plate (512), and a limiting inclined surface (531) is provided at the rear end of the limiting frame (53), and a magnet (54) is provided on the limiting inclined surface (531).

2. The flip mold clamping fixture according to claim 1, characterized in that: The supporting frame (22) is provided with at least one supporting groove (222), the supporting groove (222) being U-shaped, having an avoidance step (2221) at its upper opening, and a groove (2222) at its bottom that matches the protruding section of the plastic part of the workpiece (10) to be processed.

3. The flip mold clamping fixture according to claim 1 or 2, characterized in that: Two flip support seats (21) are provided, and the two flip support seats (21) are respectively provided on both sides of the support frame (22). The middle parts of both sides of the support frame (22) are protruded to form mounting portions (223), and the mounting portions (223) are connected to the flip support seats (21) via a flip shaft (23).

4. The flip mold clamping fixture according to claim 2, characterized in that: The bearing seat (31) is provided with accommodating cavities (311) with the same number as the supporting grooves (222) and upper and lower openings. A clearance groove (3111) is provided opposite to the upper opening edge of the accommodating cavity (311). A convex strip (3112) is formed on the inner wall of the accommodating cavity (311) to cooperate with the groove portion of the connector of the workpiece (10) to be processed.

5. The flip mold clamping fixture according to claim 4, characterized in that: A plunger (33) extending into the accommodating cavity (311) is provided on the upper portion of the front end surface of the bearing seat (31), and the plunger (33) cooperates with the notch portion of the connector of the workpiece (10) to be processed.

6. The flip mold clamping fixture according to claim 4, characterized in that: A boss (312) for mounting the magnetic component (32) is provided in the middle of the front edge of the supporting seat (31).

7. The flip mold clamping fixture according to claim 4, characterized in that: The pressing frame (42) includes two connecting arms (421), a pressing arm 1 (422) and a pressing arm 2 (423), wherein the connecting arm (421) is L-shaped, the pressing arm 1 (422) is connected to one end of the horizontal section of the connecting arm (421), the pressing arm 1 (422) is provided with a number of sinking sections (4221) equal to the number of the accommodating cavities (311), the sinking sections (4221) are in contact with the upper end surface of the connector of the workpiece (10) to be processed, the pressing arm 2 (423) is connected to the connection between the horizontal section and the vertical section of the connecting arm (421), and the pressing arm 2 (423) is provided with a number of pressing strips (4231) equal to the number of the accommodating cavities (311).

8. The flip mold clamping fixture according to claim 7, characterized in that: Spring needles (43) are respectively provided at the end of the pressing strip (4231), on the pressing arms (422) at both ends of the sinking section (4221), and on the front end surface of the sinking section (4221).

9. The flip mold clamping fixture according to claim 7, characterized in that: The pressing frame (42) further includes a reinforcing arm (424) connected between the first pressing arm (422) and the second pressing arm (423), and a magnetic block (44) that attracts the magnetic member (32) is provided on the reinforcing arm (424).

10. The flip mold clamping fixture according to claim 7, characterized in that: One end of the clamping arm (422) is provided with a bent paddle (4222).

11. The flip mold clamping fixture according to claim 1, characterized in that: The driving module (52) includes a rotating shaft (521), a rotating bearing seat (522), a gear (523), a rack (524), a slider (527) and a guide rail (525). The rotating shaft (521) passes through the rotating frame (51), and both ends thereof extend out of the rotating frame (51). One end of the rotating shaft (521) is mounted on the rotating bearing seat (522) via a bearing, and the other end thereof is also mounted on the rotating bearing seat (522) via a bearing near the end. The end of the other end of the rotating shaft (521) is mounted with a gear (523). A rack (524) meshing with the gear (523) is provided below the gear (523). The rack (524) is mounted on a rack connecting plate (526). The rack connecting plate (526) is fixed on the slider (527). The slider (527) is arranged on the guide rail (525), and the guide rail (525) is connected to the base plate (1) via a guide rail connecting member (528).

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