A nut detection machine for energy vehicle battery terminal parts

Abstract

The present invention belongs to the field of energy vehicle technology, and is particularly a nut detection machine for battery terminal parts of energy vehicles, comprising a base, a lifting assembly for contact detection provided on the upper end of the base, a pusher assembly for product detection provided between the base and the lifting assembly, a flip assembly provided in the middle of the base relative to the pusher assembly, and a plastic product provided on the upper end of the base. The conductivity of the nut is used to form an electrical circuit to perform a synchronous detection of glue overflow and surface glue coating on the screw thread. The front end depth of the screw thread at the lower end of the fixing rod is designed to be 12.3MM, which is the actual requirement of 12MM with a positive tolerance of 0.3. When there is glue overflow on the product thread, the front end of the gauge cannot be completely screwed into the nut, and the circuit is blocked and a short circuit is formed. Similarly, when there is glue overflow on the end face of the nut, a short circuit will also be formed. By adding an indicator light to the equipment, it is very clear which product has a problem.

Description

Technical Field

[0001] The invention belongs to the technical field of energy vehicles, and in particular relates to a nut detection machine for battery terminal parts of energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source (or use conventional automotive fuels and new onboard power units), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures.

[0003] Nut inserts are widely used in injection molded parts. However, after the injection molding process is completed, glue may overflow from the nut surface and the threads. Although the probability of this phenomenon is low, it poses a serious threat to the safety performance of automotive products, directly affecting the conductivity of the battery pack of energy vehicles, and may cause components to heat up or even spontaneously combust.

[0004] Currently, most common methods for detecting nut overflow on the market use CCD testing, with a smaller number using go / no-go gauges. Due to the confined space inside the nut, CCD testing is not entirely reliable, with a high rate of false detections, while go / no-go gauge testing is inefficient. Therefore, some manufacturers use a combination of CCD and go / no-go gauges. This solution is reliable, but it significantly impacts detection efficiency. Manual loading is slow, equipment costs remain high, and a dedicated inspection area is required, making it difficult to connect to production equipment for continuous output. When the nut is inserted into the injection molding process, the needle inside the mold is an optical core (which, if threaded, affects injection molding efficiency and the mold structure is relatively complex). Molten plastic will flow upward along the gap between the threads (where the overflow occurs). The greater the pressure on the injection molding machine, the higher the upward movement. This phenomenon results in a defect rate of approximately 0.02%. This phenomenon is significantly affected by the precision of the injection molding machine and the dimensional consistency of the nut. There is no way to completely eliminate this problem. Once it enters the OEM, it directly impacts loading safety. Summary of the Invention

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a nut detection machine for battery terminal parts of energy vehicles, which has the characteristics of reducing the detection mechanism, changing the detection method, integrating the detection equipment with the automated production line, and improving production efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a nut detection machine for battery terminal parts of energy vehicles, comprising a base, a lifting assembly for detecting contact is provided on the upper end of the base, a pushing assembly for product detection is provided between the base and the lifting assembly, a flipping assembly is also provided at the middle of the base relative to the pushing assembly, a plastic product is also provided on the upper end of the base, a nut is provided inside the plastic product, and an indicator light is fixedly installed on the upper end of the base relative to the installation of the lifting assembly.

[0007] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the lifting assembly includes a lifting cylinder fixed to the upper end of the base through a bracket, and a lifting frame fixed to the telescopic end of the lifting cylinder. The lifting frame also slides on the bracket on which the lifting cylinder is installed. The lifting end of the lifting assembly is also provided with a transmission assembly.

[0008] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the transmission assembly includes a servo motor and a synchronous belt fixed to the upper end of the lifting frame, and a synchronous wheel rotatably arranged inside the lifting frame, and a driven wheel is also meshed inside the synchronous wheel, and a support rod is fixedly connected to the driven wheel. The output end of the servo motor is meshed with the inner side of the synchronous belt for transmission, and the outer side of the synchronous belt is meshed with the synchronous wheel for transmission. A detection head is also provided at the lower end of the support rod.

[0009] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, upper and lower support springs are also fixedly arranged on the top of the transmission assembly, the upper ends of the upper and lower support springs are connected to one end of the lifting frame, and the driven wheel at the upper end of the transmission assembly is in elastic contact with the lifting frame through the upper and lower support springs.

[0010] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the detection head includes an insulating sleeve mounted on the lower end of the support rod surface, and a metal outer sleeve mounted on the outer end of the insulating sleeve. One end of the support rod is connected to the positive pole of the power supply, and one end of the metal outer sleeve is connected to the negative pole of the power supply.

[0011] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the upper and lower support springs are electrically connected to the negative pole and the positive pole of the power supply.

[0012] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the pushing assembly includes a pushing cylinder and a pushing cylinder fixed on both sides of the upper surface of the base, and the pushing cylinder and the pushing cylinder are symmetrically distributed.

[0013] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the flipping assembly includes a loading platform arranged on the inner side of the base through a rotating shaft rod, and a flipping cylinder fixed on one side of the base. The telescopic end of the flipping cylinder is used in conjunction with the rotating shaft rod on which the loading platform is installed at the upper end of the base.

[0014] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, the two sides of the loading platform cooperate with the telescopic ends of the pushing cylinder and the pushing cylinder. The loading platform is sent into the lower end of the detection device through the pushing cylinder and is sent out through the pushing cylinder after detection.

[0015] As an optimal technical solution of the energy vehicle battery terminal parts nut detection machine of the present invention, a threaded bar is provided at the bottom of the support rod, and the threaded bar is screwed with the nut under the action of the transmission assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Utilize the properties of the ratchet wheel to maintain appropriate torque during the insertion of the probe. If the probe still cannot be screwed in even after exceeding the torque, it can be considered defective. However, this does not affect the inspection of other products. At the same time, a large torque is maintained when unscrewing it out. This can solve the problem of the probe being over-tightened due to inertia during forward rotation and being unable to be unscrewed.

[0018] 2. The characteristics of the equipment are: first, its cost is low, it occupies a small area, and it is flexible to operate. When used with a robotic arm, the signal can be connected to a manual switch, or it can be operated by a single person, thus avoiding the high cost and low efficiency of the current CCD+nut go / no-go gauge detection equipment.

[0019] 3. Utilizing the nut's conductivity, an electrical circuit is constructed to simultaneously detect glue overflow on the thread and glue coating on the surface. The depth of the front end of the thread at the lower end of the fixing rod is designed to be 12.3mm, which is the required 12mm with a positive tolerance of 0.3. When glue overflows on the product thread, the front end of the thread gauge cannot be fully screwed into the nut, resulting in a circuit break. Similarly, glue overflow on the end face of the nut will also cause a circuit break. Adding an indicator light to the device will clearly indicate which product has a problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the stereoscopic main view of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the side view of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a partial cross-section of the side view of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a partial enlargement of part A in the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the product and nut in the present invention from a top view;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of a local section;

[0027] Figure 7 Schematic diagram of the structure of a local cross section of the detection head in the present invention;

[0028] In the figure: 1. Base; 21. Lifting cylinder; 22. Lifting frame; 31. Servo motor; 32. Synchronous belt; 33. Synchronous pulley; 34. Driven pulley; 35. Support rod; 41. Push cylinder; 42. Push cylinder; 51. Loading table; 52. Flip cylinder; 61. Insulation sleeve; 62. Metal outer bushing; 63. Negative power supply; 64. Positive power supply; 7. Plastic product; 8. Nut; 9. Upper and lower support springs; 10. Indicator light. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] See also Figure 1-7The present invention provides the following technical solutions: a nut inspection machine for battery terminal parts of energy vehicles, comprising a base 1, a lifting assembly for contact detection disposed at the upper end of the base 1, a pusher assembly for product inspection disposed between the base 1 and the lifting assembly, a flip assembly disposed in the middle of the base 1 relative to the pusher assembly, a plastic product 7 disposed at the upper end of the base 1, a nut 8 disposed within the plastic product 7, and an indicator light 10 fixedly mounted at the upper end of the base 1 relative to the installation of the lifting assembly. In this embodiment, the device is not very versatile and is not suitable for multiple specifications of nuts on the same injection molded part. It is only suitable for current new energy terminal parts, which are mostly single-nut parts and have high requirements for the nut surface and internal thread of the product. The advantages of this invention are, first, solving the bottleneck problem of inspection during the production process, and second, reducing the labor and equipment costs during the production process. The height of the upper end of the nut 8 is slightly greater than the height of the inner upper end of the plastic product 7, and the height of the thread at the lower end of the support rod 35 is 12.3mm, which is the required 12mm with a positive tolerance of 0.3.

[0032] Specifically, the lifting assembly includes a lifting cylinder 21 fixed to the upper end of the base 1 through a bracket, and a lifting frame 22 fixed to the telescopic end of the lifting cylinder 21. The lifting frame 22 also slides on the bracket on which the lifting cylinder 21 is installed. The lifting end of the lifting assembly is also provided with a transmission assembly.

[0033] Specifically, the transmission assembly includes a servo motor 31 and a synchronous belt 32 fixed to the upper end of the lifting frame 22, and a synchronous wheel 33 rotatably arranged inside the lifting frame 22. A driven wheel 34 is also meshed inside the synchronous wheel 33, and a support rod 35 is fixedly connected to the driven wheel 34. The output end of the servo motor 31 is meshed with the inner side of the synchronous belt 32 for transmission, and the outer side of the synchronous belt 32 is meshed with the synchronous wheel 33 for transmission. A detection head is also provided at the lower end of the support rod 35.

[0034] Specifically, upper and lower support springs 9 are fixedly provided on the top of the transmission assembly, and the upper ends of the upper and lower support springs 9 are connected to one end of the lifting frame 22. The driven wheel 34 at the upper end of the transmission assembly is in elastic contact with the lifting frame 22 through the upper and lower support springs 9.

[0035] Specifically, the detection head includes an insulating sleeve 61 mounted on the lower end of the support rod 35, and a metal outer sleeve 62 mounted on the outer end of the insulating sleeve 61. One end of the support rod 35 is connected to the positive pole 64 of the power supply, and one end of the metal outer sleeve 62 is connected to the negative pole 63 of the power supply.

[0036] Specifically, the upper and lower support springs 9 are electrically connected to the negative pole 63 and the positive pole 64 of the power supply. In this embodiment, the support rod 35 and the metal outer sleeve 62 are both metal components. After contacting the nut 8, the indicator light 10 will only light up when there is no glue overflow on the surface of the nut 8. If the indicator light is not on, it proves that glue overflow has occurred, reminding the operator to ensure product quality.

[0037] Specifically, the pushing assembly includes a pushing cylinder 41 and a pushing cylinder 42 fixed on both sides of the upper surface of the base 1. The pushing cylinder 41 and the pushing cylinder 42 are symmetrically distributed. In this embodiment, the pushing cylinder 41 acts to move the template to the bottom of the detection head.

[0038] Specifically, the flipping assembly includes a loading platform 51 that is rotated on the inner side of the base 1 by a rotating shaft rod, and a flipping cylinder 52 fixed on one side of the base 1. The telescopic end of the flipping cylinder 52 is used in conjunction with the rotating shaft rod on which the loading platform 51 is installed at the upper end of the base 1. In this embodiment, the upper and lower surfaces of the loading platform 51 are provided with limit strips for clamping the product template to prevent the template from falling during flipping. The disengagement and clamping are controlled by pushing the cylinder 41 and pushing the cylinder 42.

[0039] Specifically, the two sides of the loading platform 51 cooperate with the telescopic ends of the pushing cylinder 41 and the pushing cylinder 42. The loading platform 51 is sent to the lower end of the detection device by the pushing cylinder 41, and is sent out by the pushing cylinder 42 after detection.

[0040] Specifically, a threaded strip is provided at the bottom of the support rod 35 , and the threaded strip is screwed together with the nut 8 under the action of the transmission assembly.

[0041] The working principle and use process of the present invention: This equipment is designed according to the number of detection needles and the size of the loading tray of the multi-cavity mold. After the robot takes out the product from the mold, it is placed on the discharge table and pushed into the equipment by the propulsion cylinder. The lifting cylinder begins to descend, and at the same time the main power motor starts, driving all the synchronous wheels through the synchronous belt, and then transferring the power to the driven wheel. The driven wheel drives the probe to rotate into the product nut. After it is fully screwed in, the positive and negative power supplies are connected, and the indicator light lights up. If a product is covered with glue, the probe cannot be powered, the indicator light does not light up, and the equipment alarms. After the detection is completed, the main power servo motor reverses and the cylinder rises. The ejection cylinder pushes the loading table to the loading position, and the flip cylinder drives the loading table to rotate 180 degrees. The loading table on the back returns to the front, and the robot signal discharges the material again.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A nut detection machine for battery terminal parts of energy vehicles, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a lifting assembly for detecting contact, a pushing assembly for product detection is provided between the base (1) and the lifting assembly, a flip assembly is also provided in the middle of the base (1) relative to the pushing assembly, a plastic product (7) is also provided on the upper end of the base (1), a nut (8) is provided inside the plastic product (7), an indicator light (10) is fixedly installed on the upper end of the base (1) relative to the installation of the lifting assembly, and a transmission assembly is also provided on the lifting end of the lifting assembly, the transmission assembly includes a servo motor (31) and a synchronous belt (32) fixed on the upper end of the lifting frame (22), and a synchronous wheel (33) rotatably provided inside the lifting frame (22), and the synchronous wheel (33) is also meshed inside. A driven wheel (34) is provided, and a support rod (35) is fixedly connected to the inside of the driven wheel (34). The output end of the servo motor (31) is meshed with the inner side of the synchronous belt (32) for transmission, and the outer side of the synchronous belt (32) is meshed with the synchronous wheel (33) for transmission. A detection head is also provided at the lower end of the support rod (35), and the detection head includes an insulating sleeve (61) sleeved on the lower end of the surface of the support rod (35), and a metal outer sleeve (62) sleeved on the outer end of the insulating sleeve (61). One end of the support rod (35) is connected to the positive electrode (64) of the power supply, and one end of the metal outer sleeve (62) is connected to the negative electrode (63) of the power supply. A threaded bar is provided at the bottom of the support rod (35), and the threaded bar is screwed with the nut (8) under the action of the transmission component.

2. The energy vehicle battery terminal parts nut detection machine according to claim 1 is characterized in that: The lifting assembly comprises a lifting cylinder (21) fixed to the upper end of the base (1) via a bracket, and a lifting frame (22) fixed to the telescopic end of the lifting cylinder (21), wherein the lifting frame (22) also slides on the bracket on which the lifting cylinder (21) is mounted.

3. The energy vehicle battery terminal parts nut detection machine according to claim 1 is characterized in that: Upper and lower support springs (9) are also fixedly provided on the top of the transmission assembly. The upper ends of the upper and lower support springs (9) are connected to one end of the lifting frame (22). The driven wheel (34) at the upper end of the transmission assembly is in elastic contact with the lifting frame (22) through the upper and lower support springs (9).

4. The energy vehicle battery terminal parts nut detection machine according to claim 3 is characterized in that: The upper and lower support springs (9) are electrically connected to the negative power supply electrode (63) and the positive power supply electrode (64).

5. The energy vehicle battery terminal parts nut detection machine according to claim 1, characterized in that: The pushing assembly comprises a pushing cylinder (41) and a pushing cylinder (42) fixed on both sides of the upper surface of the base (1), wherein the pushing cylinder (41) and the pushing cylinder (42) are symmetrically distributed.

6. The energy vehicle battery terminal parts nut detection machine according to claim 1, characterized in that: The turning assembly comprises a loading platform (51) which is arranged on the inner side of the base (1) and is rotated by a rotating shaft rod, and a turning cylinder (52) which is fixed to one side of the base (1), wherein the telescopic end of the turning cylinder (52) cooperates with the rotating shaft rod on which the loading platform (51) is mounted on the upper end of the base (1).

7. The energy vehicle battery terminal parts nut detection machine according to claim 6, characterized in that: The two sides of the loading platform (51) cooperate with the telescopic ends of the push cylinder (41) and the push cylinder (42) to be used. The loading platform (51) is sent to the lower end of the detection device through the push cylinder (41) and is sent out through the push cylinder (42) after detection.

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