Electronic detonator defective product removing and replacing equipment

Abstract

The invention discloses electronic detonator defective product removing and replacing equipment which is arranged close to an upper and lower double-line conveying line, an upper-layer line of the upper and lower double-line conveying line is used for conveying a conveying jig loaded with a semi-finished product, a lower-layer line of the upper and lower double-line conveying line is used for conveying an unloaded conveying jig, and the equipment comprises visual detection equipment, material replacing equipment, a first camera and a push-pull device; the first camera is used for shooting end faces of injection molding bodies in semi-finished products conveyed on the upper-layer line; the visual detection equipment comprises a first machine table and a visual detection device arranged on the first machine table, the visual detection device is located above the upper-layer line, and the visual detection device is used for shooting an injection molding body at one end of a semi-finished product conveyed by the upper-layer line, a middle binding line and a line end at the other end of the semi-finished product; the material replacing device comprises a second machine table, a material taking mechanical arm, a lifting mechanism and a first shifting mechanism, and the material taking mechanical arm, the lifting mechanism and the first shifting mechanism are arranged on the second machine table. The defective electronic detonator rejecting and replacing equipment can reduce the manufacturing cost of the electronic detonators.

Description

Technical Field

[0001] This invention relates to the field of civilian explosives manufacturing equipment technology, and in particular to equipment for rejecting and replacing defective electronic detonators. Background Technology

[0002] CN109443116B discloses an electronic detonator production line. In this production line, after the injection molding equipment completes the injection molding of semi-finished products, there is a lack of an appearance inspection process. As a result, semi-finished products with poor injection molding and poor wire stripping and shaping are processed in subsequent stations, causing material waste, slowing down the production cycle, and resulting in an unnecessary increase in the manufacturing cost of electronic detonators. Summary of the Invention

[0003] The technical problem solved by this invention is to provide a device for rejecting and replacing defective electronic detonators that helps reduce the manufacturing cost of electronic detonators.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A defective electronic detonator rejection and replacement device is installed near the upper and lower double-line conveyor lines. The upper line of the double-line conveyor lines is used to transport conveyor fixtures carrying semi-finished products, and the lower line is used to transport empty conveyor fixtures. The device includes a visual inspection device, a material replacement device, a first camera, and a push-pull device. The first camera is used to photograph the end face of the injection molded part in the semi-finished product transported on the upper line. The visual inspection device includes a first machine base and a visual inspection device mounted on the first machine base. The visual inspection device is located above the upper line and is used to photograph the injection molded part at one end, the middle binding wire, and the wire end at the other end of the semi-finished product transported on the upper line. Material replacement... The equipment includes a second machine and a material handling robot, a lifting mechanism, and a first shifting mechanism respectively mounted on the second machine. The second machine has a replacement position, a preparation position, and a fixture unloading position corresponding to the lower line. The lifting mechanism includes a lifting platform and a lifting drive component that drives the lifting platform to switch between the preparation position and the fixture unloading position. The material handling robot is used to remove visually defective semi-finished products from the conveyor fixture at the replacement position and to take out visually defective semi-finished products carried by the conveyor fixture at the preparation position to fill the empty space left on the conveyor fixture at the replacement position due to the removal of defective semi-finished products. The first shifting mechanism is used to move the conveyor fixture at the replacement position to the preparation position. The push-pull device is used to transfer the conveyor fixture between the replacement position and the upper line.

[0005] The beneficial effects of this invention are as follows: By integrating a first camera, a visual inspection device, and a material replacement device on the side of the upper conveyor line, the injection molding end face, injection molding top surface, binding wire, and wire end of the semi-finished product are photographed and identified, allowing for the immediate detection of defects such as insufficient injection molding, flash, and improper wire end shaping. When all the semi-finished products carried by the conveyor fixture on the upper line pass the visual inspection, the conveyor fixture flows directly to the lower station via the upper line. When the conveyor fixture on the upper line carries defective semi-finished products that have not passed the visual inspection, the push-pull device moves the conveyor fixture to the replacement position. The picking robot precisely removes the defective semi-finished products from the conveyor fixture at the replacement position and simultaneously fills the empty position with the qualified semi-finished products already confirmed in the conveyor fixture at the preparation position. Subsequently, the push-pull device replaces the defective semi-finished products at the replacement position. The fully loaded conveyor fixture is moved back to the upper line; when the conveyor fixture at the preparation position is empty, the lifting mechanism lowers the empty conveyor fixture to the unloading position, and then the empty conveyor fixture is sent to the lower line. The lifting mechanism then raises the lifting platform back to the preparation position, and then the first shifting mechanism moves the conveyor fixture in the replacement position to the preparation position. In this way, defective semi-finished products are identified and replaced before flowing into subsequent high-value stations such as welding and clamping, avoiding ineffective processing and material scrapping caused by continuing to process defective products. It also saves the risk of downstream shutdown and rework or scrapping of the entire batch due to the discovery of defects. The empty conveyor fixture is returned and recycled in a timely manner through the lower line, reducing the probability of line blockage, ensuring the stability of the upper line's cycle time, and thus reducing the overall manufacturing cost of electronic detonators. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the overall structure of the electronic detonator defective product rejection and replacement equipment in Example 1; Figure 2 This is a schematic diagram of the structure of the visual inspection device in Example 1; Figure 3 This is a schematic diagram of the material replacement equipment in Example 1; Figure 4 This is a top view of a portion of the structure of the material replacement device in Embodiment 1; Figure 5 This is a partial schematic diagram of the upper and lower double-line conveyor line in Embodiment 1.

[0008] Explanation of icon numbers: 1. Double-line conveyor system; 11. Upper layer line; 12. Lower layer line; 2. Conveying fixtures; 3. Visual inspection equipment; 31. First machine platform; 32. Visual inspection device; 321. Second camera; 322. Third camera; 323. Fourth camera; 324. Mounting bracket; 325. Visual inspection drive unit; 326. Supplemental lighting; 4. Material replacement equipment; 41. Second machine platform; 42. Material handling robot; 43. Lifting mechanism; 431. Lifting platform; 432. Lifting drive component; 44. First shifting mechanism; 451. Replacement position; 452. Material preparation position; 453. Fixture unloading position; 46. Inclined push positioning mechanism; 461. Push positioning drive component; 462. Positioning push block; 47. Positioning assembly; 48. Second shifting mechanism; 481. Linear drive component; 482. Push plate; 5. First camera; 6. Push-pull device; 7. Defective product collection box. Detailed Implementation

[0009] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0011] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0012] Furthermore, if the embodiments of the present invention involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0013] Furthermore, if the meaning of "and / or" in the entire text is to include three parallel solutions, taking "and A / or B" as an example, it includes solution A, solution B, and a solution that simultaneously satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0014] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0015] Example 1 Please refer to Figures 1 to 5Embodiment 1 of the present invention is: a defective electronic detonator rejection and replacement device, which is set near the upper and lower double-line conveyor line 1. The upper line 11 of the upper and lower double-line conveyor line 1 is used to convey the conveying fixture 2 carrying semi-finished products, and the lower line 12 is used to convey the empty conveying fixture 2. The defective electronic detonator rejection and replacement device includes a visual inspection device 3, a material replacement device 4, a first camera 5, and a push-pull device 6. The first camera 5 is used to photograph the end face of the injection molded body in the semi-finished product conveyed by the upper line 11. The visual inspection device 3 includes a first machine base 31 and a visual inspection device 32 set on the first machine base 31. The visual inspection device 32 is located above the upper line 11 and is used to photograph the injection molded body at one end, the middle binding wire, and the wire end at the other end of the semi-finished product conveyed by the upper line 11. The material replacement device 4 includes a second machine base 41 and a picking robot 42, a lifting mechanism 43, and a first transfer machine respectively set on the second machine base 41. Structure 44, the second machine base 41 has a replacement position 451, a preparation position 452, and an unloading fixture position 453 corresponding to the lower line 12. The unloading fixture position 453 is located below the preparation position 452. The lifting mechanism 43 includes a lifting platform 431 and a lifting drive component 432 that drives the lifting platform 431 to switch between the preparation position 452 and the unloading fixture position 453. The lifting drive component 432 can be a cylinder, an electric push rod, a motor screw assembly, etc. The material handling robot 42 is used for picking. The first shifting mechanism 44 is used to move the conveying fixture 2 at the replacement position 451 to the preparation position 452, and removes the visually inspected semi-finished products carried by the conveying fixture 2 at the preparation position 452 to fill the empty space left on the conveying fixture 2 at the replacement position 451 due to the removal of the defective semi-finished products. The push-pull device 6 is used to transfer the conveying fixture 2 between the replacement position 451 and the upper line 11.

[0016] The push-pull device 6 for pushing and pulling the conveying fixture 2, the first shifting mechanism 44 for linearly pushing the conveying fixture 2, and the material handling robot 42 for picking up and placing electronic detonator wire handles are all common material handling mechanisms in the art. The specific structure of these material handling mechanisms will not be described in detail in this article. In this embodiment, the push-pull device 6 adopts a two-stage push-pull to increase its push-pull stroke.

[0017] In a preferred embodiment, the visual inspection device 3 and the material replacement device 4 are respectively located on both sides of the upper and lower double-line conveyor line 1. The push-pull device 6 is located on the first machine base 31 and is positioned corresponding to the replacement position 451. The moving direction of the push-pull device 6 is perpendicular to the conveying direction of the upper and lower double-line conveyor line 1. The visual inspection device 3 and the material replacement device 4 are located on both sides of the line, and the push-pull device 6 is located on the first machine base 31 and pulls the fixture perpendicular to the conveying direction, forming the shortest path of "inspection-pallet transfer-replacement-pallet return". This reduces the length and cycle time of the robotic arm that crosses the line. The layout on both sides also helps to shorten the occupation of the electronic detonator defective product rejection and replacement device on the upper and lower double-line conveyor line 1, and helps to shorten the overall length of the upper and lower double-line conveyor line 1.

[0018] In this embodiment, the first camera 5 is fixed on the second machine base 41; in other embodiments, the first camera 5 may also be fixed on the upper and lower double-line conveyor line 1.

[0019] The replacement position 451 and the preparation position 452 are arranged side by side along the conveying direction of the upper and lower double-line conveyor line 1, and the shifting direction of the first shifting mechanism 44 is consistent with the conveying direction of the upper and lower double-line conveyor line 1. The replacement position 451 and the preparation position 452 are arranged side by side along the line direction, and the first shifting mechanism 44 can directly translate to complete the transfer of the conveying fixture 2 without rotation or lifting, which simplifies the structure and shortens the movement time.

[0020] Optionally, the second machine base 41 is provided with an oblique pushing and positioning mechanism 46. The oblique pushing and positioning mechanism 46 is set at the corner of the replacement position 451, which is close to both the upper line 11 and the preparation position 452. The oblique pushing and positioning mechanism 46 includes a connected pushing and positioning drive 461 and a positioning push block 462. The positioning push block 462 has a right-angle positioning groove. Specifically, the second machine base 41 is provided with positioning bosses on both sides away from the oblique pushing and positioning mechanism 46. The driving direction of the pushing and positioning drive 461 is set along the diagonal of the replacement position 451. The pushing and positioning drive 461 can be a cylinder, an electric push rod, etc. The oblique pushing and positioning mechanism 46 completes the X and Y bidirectional pushing and tightening at the corner in one go, ensuring the gripping and placing accuracy of the picking robot 42, avoiding the risk of picking and placing failure or line pressing due to the slight movement of the conveying fixture 2, and improving the replacement success rate and equipment utilization rate. More importantly, the inclined push positioning mechanism 46 can avoid the movement path between the upper line 11 and the replacement position 451, ensuring that the push-pull device 6 can work smoothly.

[0021] To improve the material handling accuracy of the picking robot 42 at the material preparation position 452, the second machine base 41 is provided with a positioning component 47 for positioning the conveying fixture 2 at the material preparation position 452.

[0022] The defective electronic detonator rejection and replacement equipment also includes a defective product collection box 7 placed on the second machine 41. By placing the defective product collection box 7 directly on the second machine 41, defective semi-finished products rejected by the material handling robot 42 can immediately fall into the defective product collection box 7, avoiding scattering on the equipment or the ground, reducing the number of manual cleanings, keeping the site clean, and facilitating centralized recycling and analysis to provide data for process improvement.

[0023] The material replacement device 4 also includes a second shifting mechanism 48. In this embodiment, the second shifting mechanism 48 is mounted on the second machine base 41. The second shifting mechanism 48 is used to shift the conveying fixture 2 located at the unloading fixture position 453 to the lower line 12. The second shifting mechanism 48 includes a connected linear drive component 481 and a push plate 482. The linear drive component 481 includes, but is not limited to, a cylinder, an electric push rod, a motor lead screw assembly, etc. The driving direction of the linear drive component 481 is perpendicular to the conveying direction of the upper and lower double-line conveyor lines 1. The second shifting mechanism 48 actively pushes the empty conveying fixture 2 at the unloading fixture position 453 into the lower line 12 without relying on gravity or manual picking, ensuring seamless connection between the transfer rhythm of the empty conveying fixture 2 and the lifting action of the lifting platform 431, improving the return efficiency of the lower line 12, and avoiding the phenomenon of the replacement position 451 being empty for a long time due to the empty conveying fixture 2 remaining at the unloading fixture position 453.

[0024] Specifically, the visual inspection device 32 includes a second camera 321, a third camera 322, and a fourth camera 323 arranged sequentially along the conveying direction perpendicular to the upper and lower double-line conveyor lines 1. The second camera 321 is used to photograph the injection molded body in the semi-finished product conveyed by the upper line 11 from top to bottom. The third camera 322 is used to photograph the middle binding wire of the semi-finished product conveyed by the upper line 11 from top to bottom. The fourth camera 323 is used to photograph the wire end in the semi-finished product conveyed by the upper line 11 from top to bottom. By using the second camera 321, the third camera 322, and the fourth camera 323 to photograph the injection molded body, the binding wire, and the wire end in segments, the inspection field of view of the entire semi-finished product is divided into three fixed focal lengths. Each camera only needs to cover a local area, which can reduce pixel requirements and lens costs, while improving the imaging resolution of each part, making defects such as missing glue, loose binding, and inadequate shaping easier to identify.

[0025] In this embodiment, the visual inspection device 32 further includes a mounting frame 324 and a visual inspection drive 325 that drives the mounting component to move along the conveying direction of the upper and lower double-line conveyor line 1. The second camera 321, the third camera 322, and the fourth camera 323 are all fixed on the mounting frame 324. The visual inspection drive 325 includes, but is not limited to, cylinders, electric push rods, and motor lead screw assemblies. The visual inspection drive 325 drives the mounting frame 324 to reciprocate along the line direction, so that the second camera 321 / third camera 322 / fourth camera 323 can be aligned with each semi-finished product in the conveying fixture 2 to perform step-by-step shooting, effectively ensuring the inspection accuracy.

[0026] In one or more embodiments, the visual inspection device 32 further includes two sets of supplementary lights 326. One set of supplementary lights 326 is configured corresponding to the second camera 321, and the other set of supplementary lights 326 is configured corresponding to the fourth camera 323. The two sets of supplementary lights 326 provide controllable illumination to the second camera 321 and the fourth camera 323 respectively, which helps to reduce the false detection rate. In this embodiment, the two sets of supplementary lights 326 are respectively fixed on the upper and lower double-line conveyor lines 1.

[0027] The working process of this electronic detonator defective product rejection and replacement equipment is as follows: After the upper and lower double-line conveyor line 1 is working normally, when the visual inspection detects for the first time that a defective product exists in a certain conveyor fixture 2 on the upper line 11, the push-pull device 6 moves the conveyor fixture 2 (hereinafter referred to as the first fixture) to the replacement position 451, and then the first shifting mechanism 44 moves the first fixture to the preparation position 452. The picking robot 42 removes the defective product from the first fixture at the replacement position 451 or the preparation position 452, and the first fixture stops at the preparation position 452. Subsequently, when visual inspection detects a defective product in a certain conveyor fixture 2 on the upper line 11, the push-pull device 6 moves the conveyor fixture 2 (hereinafter referred to as the second fixture) to the replacement position 451. The picking robot 42 removes the defective product from the second fixture at the replacement position 451, takes out the visually qualified semi-finished product from the first fixture, and places the qualified semi-finished product into the empty space left by the removal of the defective product in the second fixture. Then, the push-pull device 6 moves the second fixture, which is fully loaded with qualified semi-finished products, back to the upper line 11. Until the first fixture is unloaded, the lifting mechanism 43 lowers the unloaded first fixture to the unloading fixture position 453. Then, the second shifting mechanism 48 moves the unloaded first fixture in the unloading fixture position 453 to the lower line 12. Then, the lifting platform 431 resets and returns to the preparation position 452. Next, the first shifting mechanism 44 moves the conveying fixture 2 in the replacement position 451 to the preparation position 452. The electronic detonator defective product rejection and replacement equipment continues to perform the transfer-rejection-replacement-return steps. Here, transfer refers to the push-pull device 6 moving the conveying fixture 2 from the upper line 11 to the replacement position 451, and return refers to the push-pull device 6 returning the conveying fixture 2 from the replacement position 451 to the upper line 11.

[0028] In addition, since the electronic detonator defective product rejection and replacement equipment has the function of online replacement of defective products, this electronic detonator defective product rejection and replacement equipment can be added after multiple workstations on the production line, such as after injection molding of the injection body, after wire stripping by the wire stripper, after chip soldering, after the wire end is fixed to the terminal block in the bottom shell of the junction box, etc.

[0029] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A defective electronic detonator rejection and replacement device, located near an upper and lower double-line conveyor system, wherein the upper line of the double-line conveyor system is used to transport a conveyor fixture carrying semi-finished products, and the lower line is used to transport an empty conveyor fixture, characterized in that... Includes visual inspection equipment, material replacement equipment, a first camera, and a push-pull device. The first camera is used to photograph the end face of the injection molded part in the semi-finished product conveyed on the upper line; The visual inspection equipment includes a first machine base and a visual inspection device mounted on the first machine base. The visual inspection device is located above the upper layer line and is used to photograph the injection molded body at one end, the binding wire in the middle, and the wire end at the other end of the semi-finished product conveyed by the upper layer line. The material replacement equipment includes a second machine and a picking robot, a lifting mechanism, and a first shifting mechanism respectively installed on the second machine. The second machine has a replacement position, a preparation position, and an unloading fixture position corresponding to the lower line. The lifting mechanism includes a lifting platform and a lifting drive component that drives the lifting platform to switch between the preparation position and the unloading fixture position. The picking robot is used to remove visually defective semi-finished products from the conveying fixture at the replacement position and to take out visually defective semi-finished products carried by the conveying fixture at the preparation position to fill the empty space left on the conveying fixture at the replacement position due to the removal of defective semi-finished products. The first shifting mechanism is used to move the conveying fixture at the replacement position to the preparation position. The push-pull device is used to transfer the conveyor fixture between the replacement position and the upper line.

2. The electronic detonator defective product rejection and replacement equipment according to claim 1, characterized in that, It also includes a defective product collection box placed on the second machine.

3. The electronic detonator defective product rejection and replacement device according to claim 1, characterized in that, The material replacement equipment further includes a second shifting mechanism, which is disposed on the second machine platform and is used to shift the conveying fixture in the unloading fixture position to the lower line.

4. The electronic detonator defective product rejection and replacement device according to claim 1, characterized in that, The visual inspection device includes a second camera, a third camera, and a fourth camera arranged sequentially along the conveying direction perpendicular to the upper and lower double conveyor lines. The second camera is used to photograph the injection molded body in the semi-finished product conveyed by the upper line, the third camera is used to photograph the middle binding wire of the semi-finished product conveyed by the upper line, and the fourth camera is used to photograph the wire end in the semi-finished product conveyed by the upper line.

5. The electronic detonator defective product rejection and replacement device according to claim 4, characterized in that, The visual inspection device also includes a mounting frame and a visual inspection drive unit that drives the mounting component to move along the conveying direction of the upper and lower double-line conveyor lines. The second camera, the third camera and the fourth camera are all fixed on the mounting frame.

6. The electronic detonator defective product rejection and replacement device according to claim 4, characterized in that, The visual inspection device also includes two sets of supplementary lights, one set of which corresponds to the second camera and the other set of which corresponds to the fourth camera.

7. The electronic detonator defective product rejection and replacement device according to claim 1, characterized in that, The visual inspection device and the material replacement device are respectively located on both sides of the upper and lower double-line conveyor. The push-pull device is located on the first machine platform and is set corresponding to the replacement position. The moving direction of the push-pull device is perpendicular to the conveying direction of the upper and lower double-line conveyor.

8. The electronic detonator defective product rejection and replacement device according to claim 7, characterized in that, The first camera is fixed on the second machine platform; or, the first camera is fixed on the upper and lower double-line conveyor lines.

9. The electronic detonator defective product rejection and replacement device according to claim 7, characterized in that, The replacement position and the preparation position are arranged side by side along the conveying direction of the upper and lower double-line conveyor lines, and the shifting direction of the first shifting mechanism is consistent with the conveying direction of the upper and lower double-line conveyor lines.

10. The electronic detonator defective product rejection and replacement device according to claim 9, characterized in that, The second machine base is provided with an oblique push positioning mechanism, which is located at the corner of the replacement position and close to both the upper line and the material preparation position. The oblique push positioning mechanism includes a push positioning drive and a positioning push block connected together, and the positioning push block has a right-angle positioning groove.

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