Oil wax agent canned product paste crack detection equipment and oil wax agent canned product production line
By setting guide bars and multiple collision detection parts on the canned oil wax product line, the collision sound is used to detect whether there are cracks on the side of the paste, and the problem of difficulty in detecting side cracks in the prior art is solved, and an efficient and simple detection method is achieved.
Patent Information
- Application Number
- CN202510137067.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2025-05-09
AI Technical Summary
The prior art is difficult to detect whether there are cracks on the sides of the paste of the canned oil wax agent, especially because the packaging cans are low in light transmittance, making it difficult for the naked eye to detect the side cracks.
By providing guide strips and multiple collision detection parts on both sides of the conveyor belt, the collision sound is collected for detection by randomly rotating the canned product on the conveyor belt and colliding with the collision detection part.
It realizes effective detection of whether there are cracks on the sides of the paste of canned oil wax agents. It has a simple structure and a low failure rate, and can be efficiently applied on the production line.
Smart Images
Figure CN119951771A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of oil wax canned products, and in particular to a paste crack detection device for oil wax canned products and an oil wax canned product production line. Background Art
[0002] Oil-wax products, such as makeup removers, lip masks, and foundation creams, usually contain a high proportion of wax (about 5-15%) and oil. During the production process, such products must first be heated into a liquid state and then canned into glass or plastic packaging jars. After cooling and solidification, an oil-wax paste is formed. The oil-wax paste and the packaging jar constitute the oil-wax canned product. The packaging jar is usually made of a material with low light transmittance, which can provide effective light protection for the oil-wax paste and reduce problems such as deterioration of the paste ingredients or color changes of the paste caused by long-term light exposure. Due to the high wax content, the oil-wax product may shrink during the cooling period or within a few days after cooling, causing cracks in the paste, affecting the product quality. When cracks appear on the top surface of the paste, the staff can find them through visual inspection, but when cracks appear on the side of the paste, it is difficult to detect with the naked eye due to the low light transmittance of the oil-wax packaging jar. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a crack detection device for oil wax canned product paste, which can detect whether there are cracks on the side of the oil wax canned product paste. The present invention also provides an oil wax canned product production line, which can detect whether there are cracks on the side of the oil wax canned product paste.
[0004] After research, the inventor found that when there are no cracks on the side of the paste, the paste fits tightly with the oil wax agent packaging can, and there is no air. Therefore, the collision sound produced when the oil wax agent can collides with other objects is relatively dull and consistent. When there are cracks on the side of the paste, air will enter the cracks and form cavities, which causes the collision sound produced by the oil wax agent can when colliding with other objects to become crisper and irregular. Based on this discovery, the inventor thought of detecting whether there are cracks on the side of the paste of the oil wax agent can by collision.
[0005] The inventor initially considered conveying the canned oil wax agent through a conveyor belt, and using a hammer to knock the canned oil wax agent to detect whether there are cracks on the side of the paste. However, this detection device requires a complex driving mechanism to control the action of the hammer, including a knocking mechanism that drives the hammer to knock the canned oil wax agent and a movable mechanism that drives the hammer to move to knock different areas, resulting in a complex structure and a high failure rate. After further research, the inventor proposed a more concise and effective solution: guide strips are set on both sides of the conveyor belt, and multiple collision detection parts are set on the guide strips. During the detection, the canned oil wax agent conveyed by the conveyor belt collides with the collision detection part under the guidance of the guide strip. Each time the collision occurs, the canned oil wax agent will randomly rotate on the conveyor belt. At the next collision, the canned oil wax agent will hit the next collision detection part in different areas. Therefore, only multiple collision detection parts need to be set to perform collision detection on different areas of the canned product. This detection device does not require a complex driving mechanism, has a simple structure, and has a low failure rate.
[0006] In order to solve the above-mentioned technical problems, the oil wax agent canned product paste crack detection equipment of the present invention includes a detection conveyor belt for conveying the oil wax agent canned product forward, and two guide bars in the front-to-back direction are respectively provided at the left and right edges of the detection conveyor belt, and the first guide bar protrudes toward the second guide bar and has multiple first collision detection parts arranged in parallel front and back, and the two guide bars jointly guide the oil wax agent canned product conveyed forward by the detection conveyor belt so that the oil wax agent canned product successively collides with the multiple first collision detection parts.
[0007] Furthermore, the second guide bar protrudes toward the first guide bar and has multiple second collision detection parts arranged in parallel front and back, the multiple first collision detection parts and the multiple second collision detection parts are staggered front and back, and the two guide bars jointly guide the oil wax agent canned products so that the oil wax agent canned products collide with the multiple first collision detection parts and the multiple second collision detection parts in a staggered order.
[0008] Furthermore, the detection conveyor belt is a bidirectional conveyor belt, which can transport the oil wax canned products that have been transported forward backward. The two guide bars are bidirectional guide bars with front-to-back symmetrical structures, which together guide the oil wax canned products transported backward by the detection conveyor belt so that the oil wax canned products collide with multiple first collision detection parts in succession.
[0009] Furthermore, a channel for the oil wax canned products to pass through is reserved between the first collision detection part and the second guide bar. The rear end of the first collision detection part is narrow at the back and wide at the front to form an inclined guide wall, which guides the oil wax canned products that collide forward with the first collision detection part to the rear side of the channel, so that the oil wax canned products can pass through the channel forward under the transmission of the detection conveyor belt.
[0010] Furthermore, a sound collector for collecting collision sound is provided at each first collision detection portion.
[0011] Furthermore, a soundproof cover is provided to cover the conveyor belt and the two guide strips, and an entrance and exit for the oil wax agent canned products to enter and exit is opened at the rear end of the soundproof cover, and a curtain is provided at the entrance and exit.
[0012] Furthermore, it includes a driving motor for driving the connection detection conveyor belt, and also includes a controller, and the controller controls the connection driving motor.
[0013] The oil wax agent canned product production line of the present invention includes parallel oil wax agent filling equipment, hot air melting equipment and cooling equipment, and also includes a production conveyor belt for conveying oil wax agent packaging cans. The production conveyor belt conveys the oil wax agent packaging cans so that they pass through the oil wax agent filling machine, the hot air melting equipment and the cooling equipment in sequence. The oil wax agent filling machine heats the oil wax agent into a liquid state and then fills it into the oil wax agent packaging can to form an oil wax agent canned product. The hot air melting equipment blows hot air to the oil wax agent canned product to melt the top surface of the liquid oil wax agent. The cooling equipment cools the oil wax agent canned product to solidify the liquid oil wax agent into an oil wax agent paste. It also includes the oil wax agent canned product paste crack detection equipment as described above.
[0014] When it is necessary to detect whether there are cracks on the paste side of the oil wax agent canned product, the oil wax agent canned product is placed on the detection conveyor belt, and the detection conveyor belt is allowed to convey the oil wax agent canned product forward. During this process, the two guide bars jointly guide the oil wax agent canned product conveyed forward by the detection conveyor belt so that the oil wax agent canned product successively hits multiple first collision detection parts, and then detects whether there are cracks on the paste side according to the collision sound. Each time the oil wax agent canned product collides randomly on the detection conveyor belt, and at the next collision, the oil wax agent canned product will hit the next collision detection part in different areas. Therefore, the multiple first collision detection parts set by the detection equipment can perform collision detection on different areas of the oil wax agent canned product. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the oil wax canned product production line.
[0016] Figure 2 is a schematic diagram of a cache unit.
[0017] Figure 3 It is an exploded view of the sorting unit.
[0018] Figure 4 is a cross-sectional view of the sorting unit.
[0019] Figure 5 It is a schematic diagram of a sorting unit, a defective product placement table and a qualified product placement table, in which the sorting conveyor belt of the sorting unit is aligned with the defective product placement table.
[0020] Figure 6 It is a schematic diagram of a collision detection unit, in which a soundproof cover and a curtain are not drawn.
[0021] Figure 7 This is a top view of the rear of the collision detection unit. The soundproof cover and the curtain are not drawn in the figure. In the figure, the oil wax can enters between two guide strips.
[0022] Figure 8 It is a top view of the rear part of the collision detection unit. The soundproof cover and the curtain are not drawn in the figure. In the figure, the oil wax agent can enters the acceleration guide channel.
[0023] Fig. 9 It is a top view of the rear part of the collision detection unit. The soundproof cover and the curtain are not drawn in the figure. In the figure, the oil wax agent can collide with the first collision detection part.
[0024] Fig.10 This is a top view of the rear part of the collision detection unit. The soundproof cover and the curtain are not drawn in the figure. In the figure, the oil wax can enters the avoidance channel.
[0025] Fig.11 This is a top view of the front of the collision detection unit. The soundproof cover and the curtain are not drawn in the figure. In the figure, the oil wax canned product moves to the front end of the detection conveyor belt. DETAILED DESCRIPTION
[0026] The present invention is further described in detail below in conjunction with specific implementation methods.
[0027] Oil wax canned product production line Figure 1, including a left-right parallel oil wax filling device 101, a hot air melting device 102 and a cooling device 103, wherein the cooling device 103 includes a normal temperature air cooling unit 1031 and a cold air unit 1032. The oil wax canned product production line also includes a left-right production conveyor belt 1, which passes through the oil wax filling device 101, the hot air melting device 102 and the cooling device 103 from left to right. The oil wax filling device 101, the hot air melting device 102, the cooling device 103 and the production conveyor belt 1 are all prior art, wherein: the production conveyor belt 1 includes a conveyor belt support frame 11, a rotating shaft 12 mounted on the conveyor belt support frame 11 and a belt body 13 sleeved on the rotating shaft 12. The production line also includes a first drive motor 2, which drives the rotating shaft 12 connected to the production conveyor belt 1, drives the rotating shaft 12 to rotate, and thus drives the production conveyor belt 1 to move. During production, the staff starts the first drive motor 2, the oil wax agent filling device 101, the hot air melting device 102 and the cooling device 103, and then puts a plurality of oil wax agent packaging cans 91 on the left end of the production conveyor belt 1. The first drive motor 2 drives the production conveyor belt 1 to convey these oil wax agent packaging cans 91 to the right, so that the oil wax agent packaging cans 91 pass through the oil wax agent filling device 101, the hot air melting device 102 and the cooling device 103 to the right. During this process: the oil wax agent filling device 101 heats the oil wax agent 92 (in this embodiment, a makeup remover with a wax content of 15%) into a liquid state and then fills it into the oil wax agent packaging can 91. The oil wax agent 92 and the oil wax agent packaging can 91 together constitute the oil wax agent canned product 9; the hot air melting device 101 heats the oil wax agent 92 (in this embodiment, a makeup remover with a wax content of 15%) into a liquid state and then fills it into the oil wax agent packaging can 91. The oil wax agent 92 and the oil wax agent packaging can 91 together constitute the oil wax agent canned product 9; The leveling device 102 blows hot air toward the oil wax agent canned product 9 to melt the top surface of the liquid oil wax agent 92 in the oil wax agent packaging can 91; the normal temperature air cooling unit 1031 of the cooling device 103 blows normal temperature air toward the oil wax agent canned product 9 to preliminarily cool and solidify the liquid oil wax agent 92 in the oil wax agent packaging can 91, and then the cold air unit 1032 of the cooling device 103 blows cold air toward the oil wax agent canned product 9 to further cool the preliminarily cooled liquid oil wax agent 92 until it is completely solidified into an oil wax agent paste 93.
[0028] Due to the high wax content, Figure 1 During the cooling period, the oil wax agent 92 may shrink, resulting in cracks on the side of the paste 93, which affects the product quality. In view of this, the oil wax agent canned product production line is equipped with an oil wax agent canned product paste crack detection device 3, which is arranged on the right side of the production conveyor belt 1. The production conveyor belt 1 sends the cooled oil wax agent canned product 9 to the right into the detection device 3, and the detection device 3 detects whether there are cracks on the side of the paste 93 of each oil wax agent canned product 9 produced.
[0029] See Figure 1, the detection device 3 includes a buffer unit 4, a sorting unit 5 and a reciprocating collision detection unit 6 arranged from the back to the front. The buffer unit 4 is aligned with the right end of the production conveyor belt 1, and receives the oil wax agent canned product 9 sent to the right by the production conveyor belt 1. A defective product placement table 7 and a qualified product placement table 8 are respectively provided on the left and right sides of the sorting unit 5. The detection device 3 also includes a controller (not shown in the figure), which controls the connection of the buffer unit 4, the sorting unit 5 and the reciprocating collision detection unit 6, and controls the three units 4, 5, 6 to perform detection as follows:
[0030] The buffer unit 4 sends the received multiple oil wax agent canned products 9 to the sorting unit 5 one by one: first send the first oil wax agent canned product 9 to the sorting unit 5, and when the inspection process of the first oil wax agent canned product 9 is completed, send the second oil wax agent canned product 9 to the sorting unit 5, and so on. The sorting unit 5 sends the first oil wax agent canned product 9 to the collision detection unit 6 for collision detection. The collision detection unit 6 uses the collision detection method to detect whether there are cracks on the side of the paste 93 of the oil wax agent canned product 9. After the collision detection, the collision detection unit 6 sends the first oil wax agent canned product 9 back to the sorting unit 5. If the detection finds that there are cracks on the side of the paste 93 of the first oil wax agent canned product 9, the sorting unit 5 sends the first oil wax agent canned product 9 to the left to the defective product placement table 7, and then the inspection process of the first oil wax agent canned product 9 is completed, and the sorting unit 5 is ready to receive the second oil wax agent canned product 9 sent by the buffer unit 4. If the inspection does not find any cracks on the side of the paste 93 of the first oil wax agent canned product 9, the sorting unit 5 sends the first oil wax agent canned product 9 to the right to the qualified product placement table 8, and then the inspection process of the first oil wax agent canned product 9 is completed, and the sorting unit 5 is ready to receive the second oil wax agent canned product 9 sent by the cache unit 4.
[0031] Cache unit 4 Figure 1 and Figure 2, including a buffer conveyor belt 41. The buffer conveyor belt 41 is a prior art, which is roughly the same as the production conveyor belt 1. The difference lies in the size and direction. The production conveyor belt 1 is narrower and the buffer conveyor belt 41 is wider. The production conveyor belt 1 is in the left-right direction and the buffer conveyor belt 41 is in the front-back direction. It will not be repeated here. The buffer unit 4 also includes a second drive motor 42, which drives a rotating shaft 412 connected to the buffer conveyor belt 41. The right end of the production conveyor belt 1 is aligned with the left rear part of the buffer conveyor belt 41, and the multiple oil wax agent canned products 9 produced are conveyed to the right to the left rear part of the buffer conveyor belt 41. A left and a right cache guide bar 43, 44 are respectively provided on the left and right parts of the belt body 413 of the cache conveyor belt 41. The two cache guide bars 43, 44 are installed on the conveyor belt support frame 411 of the cache conveyor belt 41. The rear parts 431, 441 of the two cache guide bars 43, 44 are in an "eight" shape with a narrow front and a wide back. The rear end of the left cache guide bar 43 extends to the middle part of the belt body 413 of the cache conveyor belt 41, and the rear end of the right cache guide bar 44 extends to the rear end of the belt body 413 of the cache conveyor belt 41. The front parts 432, 442 of the two cache guide bars 43, 44 are both in the front-to-back direction and the distance between them is equal to the diameter of the oil wax canned product 9. The controller controls the second drive motor 42, and controls the second drive motor 42 to drive the buffer conveyor belt 41 to slowly convey multiple oil wax canned products 9 at a speed of 0.3 m / s. During this process, the two buffer guide bars 43 and 44 jointly guide the multiple oil wax canned products 9, so that the multiple oil wax canned products 9 are gathered together and arranged in a row along the front and rear directions at the front parts 432 and 442 of the two buffer guide bars 43 and 44. The controller controls the second drive motor 42 to continue to drive the buffer conveyor belt 41 to slowly convey multiple oil wax canned products 9 at the same speed until the first oil wax canned product 9 at the front is delivered to the sorting unit 5. When the detection process of the first oil wax canned product 9 is completed, the controller controls the second drive motor 42 again to drive the buffer conveyor belt 41 to slowly convey multiple oil wax canned products 9 on the buffer conveyor belt 41 at the same speed until the second oil wax canned product 9 is delivered to the sorting unit 5, and so on.
[0032] Sorting unit 5 Figure 3 and Figure 4, including a turntable frame 51 and a turntable 52 rotatably mounted on the turntable frame 51, a sorting conveyor belt 53 and a third driving motor 54 driving and connecting the sorting conveyor belt 53 are arranged on the turntable 52, and the sorting conveyor belt 53 is a prior art and is not described in detail. An internal gear 521 is arranged on the inner wall of the bottom of the turntable 52, and a fourth driving motor 55 is arranged on the turntable frame 51. An external gear 551 is arranged on the driving shaft of the fourth driving motor 55, and the external gear 551 meshes with the internal gear 521, so the fourth driving motor 55 can drive the turntable 52 to rotate by driving the external gear 551 to rotate. Two mounting plates 56 are respectively arranged on the left and right sides of the sorting conveyor belt 53, and two pairs of front and rear photoelectric sensors 57 are installed on the two mounting plates 56. Each pair of photoelectric sensors 57 includes a light signal transmitter 573 and a light signal receiver 574. This is a prior art. The light signal transmitter 573 is mounted on the left mounting plate 56, and the light signal receiver 574 is mounted on the right mounting plate 56, and is aligned with the light signal transmitter 573 to the left. The controller controls the connection of the third and fourth drive motors 54 and 55, and connects the two pairs of photoelectric sensors 57. Figure 1 and Figure 4 , the sorting conveyor belt 53 is aligned with the buffer conveyor belt 41, and receives the oil wax canned product 9 conveyed forward by the buffer conveyor belt 41. When the first oil wax canned product 9 is transported forward by the buffer conveyor belt 41 and is blocked between a pair of photoelectric sensors 571 at the rear, the controller determines that the buffer conveyor belt 41 has already delivered the first oil wax canned product 9 to the sorting unit 5, and controls the second drive motor 42 to stop working. In this state, since the transmission speed of the buffer conveyor belt 41 is relatively slow, the second oil wax canned product 9 and other oil wax canned products 9 thereon will quickly stop moving under the action of the friction force exerted by the buffer conveyor belt 41, and will not move forward to the sorting unit 5 under the action of inertia. After controlling the second drive motor 42 to stop working, the controller controls the third drive motor 54 to drive the sorting conveyor belt 53 to transport the first oil wax canned product 9 forward until it is delivered to the collision detection unit 6. See Figure 4 and Figure 5When the canned oil wax agent product 9 needs to be sent to the defective product placement table 7: the controller controls the fourth drive motor 55 to drive the turntable 52 to rotate to the left until the sorting conveyor belt 53 is aligned with the defective product placement table 7, and then controls the third drive motor 54 to drive the sorting conveyor belt 53 to work at a conveying speed of 1m / s for 1 second, and sends the first canned oil wax agent product 9 to the defective product placement table 7 to the left, and then controls the fourth drive motor 55 to drive the turntable 52 to rotate right to reset. The length of the sorting conveyor belt 53 is 20cm, so when the sorting conveyor belt 53 works at a conveying speed of 1m / s for 1 second, the first canned oil wax agent product 9 must have been sent to the defective product placement table 7. Since the conveying speed of the sorting conveyor belt 53 is 1m / s, which is a medium speed, the first canned oil wax agent product 9 can still move a short distance to the left under the action of inertia after leaving the sorting conveyor belt 53, ensuring that the first canned oil wax agent product 9 completely leaves the turntable 52. When the first oil wax canned product 9 needs to be sent to the qualified product placement table 8, the control method of the controller is basically the same as the former, with the difference that: the former is driven by the fourth drive motor 55 to drive the turntable 52 to rotate left until the sorting conveyor belt 53 is aligned with the defective product placement table 7, and the latter is driven by the fourth drive motor 55 to drive the turntable 52 to rotate right until the sorting conveyor belt 53 is aligned with the qualified product placement table 8, which will not be elaborated here.
[0033] See Figure 6 and Figure 7 The collision detection unit 6 includes a detection conveyor belt 61 and a fifth drive motor 62. The detection conveyor belt 61 is a prior art, and it is connected to the buffer conveyor belt 53 (see Figure 1) are roughly the same, and the fifth driving motor 62 drives the connected detection conveyor belt 61, which will not be elaborated. The collision detection unit 6 includes two detection guide strips 63 and 64 in the front-to-back direction. The two detection guide strips 63 and 64 are installed on the conveyor belt mounting frame 611 of the detection conveyor belt 61 and are respectively located at the left and right edges of the belt body 613 of the detection conveyor belt 611, with the first detection guide strip 63 being on the right and the second detection guide strip 64 being on the left. The first detection guide strip 63 has three first protrusions 631 arranged in parallel front and back protruding toward the left, and the distance between the first protrusion 631 and the second detection guide strip 64 is equal to the diameter of the oil wax canned product 9. The second detection guide strip 64 has four second protrusions 641 arranged in parallel front and back protruding toward the right, and the distance between the second protrusion 641 and the first detection guide strip 63 is equal to the diameter of the oil wax canned product 9. The three first protrusions 631 and the four second protrusions 641 are staggered front and back and the structure is symmetrical left and right. An acceleration guide channel 65 is left between each adjacent first protrusion 631 and second protrusion 641. The first protrusion 631 protrudes from the right side of the acceleration guide channel 65 and the second protrusion 641 protrudes from the left side of the acceleration guide channel 65. There are 7 acceleration guide channels 65 in total, and the width of each acceleration guide channel 65 is greater than the diameter of the oil wax can 9. Seven pairs of photoelectric sensors 66 are installed on the two detection guide strips 63 and 64. The 7 pairs of photoelectric sensors 66 are respectively arranged in the middle of the 7 acceleration guide channels 65, with a distance of 5 cm from the adjacent first protrusion 631 and a distance of 5 cm from the adjacent second protrusion 641. A bracket 67 is provided on the side of the detection conveyor belt 61, and seven sound collectors 68 are installed on the bracket 67 in parallel. The seven sound collectors 68 correspond to the seven protrusions 631 and 641 respectively, and are located above the seven protrusions 631 and 641 respectively. Figure 1 and Figure 6 A soundproof cover 69 is also installed on the bracket 67. The soundproof cover 69 covers the detection conveyor belt 61, two detection guide strips 63, 64 and seven sound collectors 68 from top to bottom. The rear end of the soundproof cover 69 is provided with an entrance 691, which is aligned with the rear end of the detection conveyor belt 61. A curtain 692 is provided at the entrance 691. The soundproof cover 69 is made of existing soundproof materials, which is a ceramic plate in this embodiment, and the curtain 692 is a PVC soft curtain. The controller controls the connection of the fifth drive motor 62, the seven pairs of photoelectric sensors 66 and the seven sound collectors 68.
[0034] See Figure 1 and Figure 7, the rear end of the detection conveyor belt 61 is aligned with the front end of the sorting conveyor belt 53, and receives the oil wax agent canned product 9 conveyed forward by the sorting conveyor belt 53. While the controller controls the third drive motor 54 to drive the sorting conveyor belt 53 to convey the oil wax agent canned product 9 forward, it controls the fifth drive motor 62 to drive the detection conveyor belt 61 to convey forward at a conveying speed of 1.5m / s. Therefore, when the oil wax agent canned product 9 is conveyed to the detection conveyor belt 61 by the sorting conveyor belt 53, the detection conveyor belt 61 can convey the oil wax agent canned product 9 forward at a faster speed so that the oil wax agent canned product 9 pushes the curtain 692 from the entrance and exit 691 to enter the soundproof cover 69, and also enters between the two guide strips 63, 64. When the detection conveyor belt 61 is conveyed forward, the three first protrusions 631 serve as the three first collision detection parts 635, the three front second protrusions 641 serve as the three second collision detection parts 645, and the rear ends of the two guide bars 63 and the rearmost second protrusion 641 serve as guide parts. Figure 8 , the wax agent canned product 9 moves forward under the guidance of the guide part into the first acceleration guide channel 65 from the back to the front. Since the second protrusion 641 protrudes from the left side of the acceleration guide channel 65, the wax agent canned product 9 will naturally move to the right side of the acceleration guide channel 65 under its guidance. The wax agent canned product 9 moves forward along the acceleration guide channel 65 under the transmission of the detection conveyor belt 61. Since the first protrusion 631 (i.e., the first collision detection part 635) protrudes from the right side of the acceleration guide channel 65, the wax agent canned product 9 moves forward along the acceleration guide channel 65 and will naturally collide with the first collision detection part 635 at the rear. In this process, the front right edge 91 of the wax agent canned product 9 is aligned with the first collision detection part 635, and the wax agent canned product 9 is blocked between the first pair of photoelectric sensors 66 from the back to the front. When the front edge 92 of the wax canned product 9 is blocked between the first pair of photoelectric sensors 66, the controller determines that the wax canned product 9 has been sorted by the conveyor belt 53 (see Figure 1 ) is sent to the detection conveyor belt 61, and the third drive motor 54 (see Figure 1 ) stops working; the distance between the front right edge 91 of the wax can 9 and the first collision detection portion 635 is exactly 7.5 cm, and the two are like this after 50 milliseconds Fig. 9 As shown, a collision occurs, so the controller controls the first sound collector 68 from the back to the front to start collecting the collision sound for 40 milliseconds after 50 milliseconds. An escape channel 640 is left between the first collision detection part 635 and the second guide bar 64. The rear end of the first collision detection part 635 is narrow at the back and wide at the front to form an inclined guide wall 630. When the oil wax agent canned product 9 collides with the rear end of the first collision detection part 635, the inclined guide wall 630 guides the oil wax agent canned product 9 to the rear side of the escape channel 640. The oil wax agent canned product 9 passes through the escape channel 640 under the transmission of the detection conveyor belt 61. Fig.10As shown. The canned product 9 of the oil wax agent may need to collide with the first collision detection part 635 multiple times before it can successfully enter the avoidance channel 640. However, since the sound collector 68 only collects sound at the moment of the first collision (i.e., within 40 milliseconds), only the collision sound of the first collision will be recorded for analysis, and subsequent collisions will not affect the detection results. The canned product 9 of the oil wax agent moves forward along the avoidance channel 640 and enters the second acceleration guide channel 65 under the transmission of the detection conveyor belt 61. During this process, the first protrusion 631 guides the canned product 9 of the oil wax agent. Since the first protrusion 631 protrudes from the right side of the acceleration guide channel 65, the canned product 9 of the oil wax agent will naturally move to the left side of the acceleration guide channel 65 under its guiding effect. The canned oil wax agent product 9 moves forward along the second acceleration guide channel 65 under the transmission of the detection conveyor belt 61. Since the second protrusion 641 protrudes from the right side of the acceleration guide channel 65, the canned oil wax agent product 9 moves forward along the acceleration guide channel 65 and will naturally collide with the rearmost second collision detection part 645. Similar to the first collision, the controller controls the second sound collector 68 to start collecting the collision sound for 40 milliseconds when the collision occurs. It will not be repeated here.
[0035] See Figure 6 and Fig. 9 , under the joint guidance of the two guide bars 63, 64, the canned oil wax product 9 hits the three first collision detection parts 635 and the three second collision detection parts 645 in a staggered order, and the controller controls the corresponding sound collector 68 to collect the collision sounds of the six collisions. Each time the collision occurs, the canned oil wax product 9 will randomly rotate on the detection conveyor belt 61. At the next collision, the canned oil wax product 9 will hit the next collision detection part 635, 645 in different areas. Therefore, the three first collision detection parts 635 and the three second collision detection parts 645 provided in the detection equipment can perform collision detection on different areas of the canned oil wax product 9. The detection conveyor belt 61 is a bidirectional conveyor belt, and the two guide bars 63, 64 are bidirectional guide bars with front-to-back symmetrical structures. See Figure 6 and Fig.11When the wax canned product 9 hits the last second collision detection part 645, the controller controls the fifth drive motor 62 to stop working for 2 seconds. At this time, the wax canned product 9 will continue to move forward a short distance under the action of inertia and enter between the front ends of the two guide strips 63 and 64. After 2 seconds, the controller controls the fifth drive motor 62 to rotate in the opposite direction to drive the detection conveyor belt 61 to convey the wax canned product 9 backward. When the detection conveyor belt 61 conveys backward, the three first protrusions 631 serve as the three first collision detection parts 635, the three rear second protrusions 641 serve as the three second collision detection parts 645, and the front ends of the two guide strips 63 and 64 and the second protrusion 641 closest to the front serve as guide parts. Under the guidance of the guide part, the wax agent canned product 9 moves backward into the sixth acceleration guide channel 65 from the back to the front. Since the second protrusion 641 protrudes from the left side of the acceleration guide channel 65, the wax agent canned product 9 will naturally move to the right side of the acceleration guide channel 65 under its guidance. The wax agent canned product 9 moves backward along the acceleration guide channel 62 under the transmission of the detection conveyor belt 61. Since the first protrusion 631 (i.e., the first collision detection part 635) protrudes from the right side of the acceleration guide channel 65, the wax agent canned product 9 moves backward along the acceleration guide channel 65 and will naturally collide with the first collision detection part 635 at the front. Similar to the first collision, the controller controls the corresponding sound collector 68 to start collecting collision sound for 40 milliseconds when the collision occurs, which will not be repeated here. Under the guidance of the two guide bars 63, 64, the canned wax product 9 hits the three first collision detection parts 635 and the three second collision detection parts 645 in a staggered order, and the controller controls the corresponding sound collector 68 to collect the collision sounds generated by the six collisions.
[0036] See Figure 1 and Figure 4, the oil wax agent canned product 9, under the transmission of the detection conveyor belt 61, pushes back the curtain 692 from the entrance and exit 691 of the soundproof cover 69, and then enters the sorting conveyor belt 53 from the rear end of the detection conveyor belt 61, and is blocked between the pair of photoelectric sensors 572 in front of the sorting unit 5. In this state, the controller determines that the oil wax agent canned product 9 has been sent to the sorting conveyor belt 53 by the detection conveyor belt 61, and controls the fifth drive motor 62 to stop working. When there are no cracks on the side of the paste 93, the paste 93 fits tightly with the oil wax agent packaging can 91, and there is no air. Therefore, the collision sound generated when the oil wax agent canned product 9 collides with other objects is relatively dull (lower frequency). When there are cracks on the side of the paste 93, air will enter the cracks to form a cavity, which causes the collision sound emitted by the oil wax agent canned product 9 when colliding with other objects to become crisper (higher frequency). The controller detects whether there are cracks on the side of the oil wax agent paste 93 based on the collision sound generated by the collision. Specifically, the controller analyzes whether a collision sound with a frequency higher than 2500hz is collected during the collision detection process: if so, it is determined that there are cracks on the side of the paste 93 of the detected oil wax agent canned product 9, and then the sorting unit 5 is controlled to send the oil wax agent canned product 9 to the defective product placement table 7; if not, it is determined that there are no cracks on the side of the paste 93 of the detected oil wax agent canned product 9, and then the sorting unit 5 is controlled to send the oil wax agent canned product 9 to the qualified product placement table 8.
[0037] See Figure 1 In this embodiment, the right end of the production conveyor belt 1 is aligned with the left rear part of the buffer conveyor belt 41, and the multiple oil wax agent canned products 9 produced are conveyed to the right to the left rear part of the buffer conveyor belt 41. Since the cracks may not be formed immediately after cooling and solidification, but may be formed after a period of time (usually within a week) after cooling. In other embodiments, the buffer conveyor belt 41 can be separated from the production conveyor belt 1. The production conveyor belt 1 delivers the produced oil wax agent canned products 9 to its right end and then the staff collects them. After storing them for 1 day / 3 days / 7 days, the oil wax agent canned products 9 are manually placed on the buffer conveyor belt 41 of the detection device 3 and detected by the detection device 3.
[0038] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.
Claims
1. Oil wax canned product paste crack detection equipment, characterized by: It includes a detection conveyor belt for conveying oil wax agent canned products forward, and two guide bars in the front-to-back direction are respectively provided at the left and right edges of the detection conveyor belt. The first guide bar protrudes toward the second guide bar and has multiple first collision detection parts arranged in parallel front and back. The two guide bars jointly guide the oil wax agent canned products conveyed forward by the detection conveyor belt so that the oil wax agent canned products successively collide with the multiple first collision detection parts.
2. The detection device according to claim 1, characterized in that: The second guide bar protrudes toward the first guide bar and has multiple second collision detection parts arranged in parallel front and back. The multiple first collision detection parts and the multiple second collision detection parts are staggered front and back. The two guide bars jointly guide the oil wax agent canned products so that the oil wax agent canned products collide with the multiple first collision detection parts and the multiple second collision detection parts in a staggered order.
3. The detection device according to claim 1, characterized in that: The detection conveyor belt is a bidirectional conveyor belt, which can transport the oil wax agent canned products that have been transported forward backward. The two guide bars are bidirectional guide bars with front-to-back symmetrical structures, which together guide the oil wax agent canned products transported backward by the detection conveyor belt so that the oil wax agent canned products collide with multiple first collision detection parts in succession.
4. The detection device according to claim 1, characterized in that: A channel is reserved between the first collision detection part and the second guide bar for the oil wax canned products to pass through. The rear end of the first collision detection part is narrow at the back and wide at the front to form an inclined guide wall, which guides the oil wax canned products that collide forward with the first collision detection part to the rear side of the channel, so that the oil wax canned products can pass through the channel forward under the transmission of the detection conveyor belt.
5. The detection device according to claim 1, characterized in that: A sound collector for collecting collision sound is provided at each first collision detection portion.
6. The detection device according to claim 5, characterized in that: A soundproof cover is provided to cover the conveyor belt and two guide strips, and an entrance and exit for oil and wax canned products to enter and exit is opened at the rear end of the soundproof cover, and a curtain is provided at the entrance and exit.
7. The detection device according to any one of claims 1 to 6, characterized in that: It includes a driving motor for driving the connection detection conveyor belt, and also includes a controller, which controls the connection driving motor.
8. A production line for canned oil wax agents, comprising parallel oil wax agent filling equipment, hot air melting equipment and cooling equipment, and also comprising a production conveyor belt for conveying oil wax agent packaging cans, the production conveyor belt conveys the oil wax agent packaging cans so that they pass through the oil wax agent filling machine, the hot air melting equipment and the cooling equipment in sequence, the oil wax agent filling machine heats the oil wax agent into a liquid state and then fills it into the oil wax agent packaging can to form an oil wax agent canned product, the hot air melting equipment blows hot air to the oil wax agent canned product to melt the top surface of the liquid oil wax agent flat, and the cooling equipment cools the oil wax agent canned product to solidify the liquid oil wax agent into an oil wax agent paste, characterized in that: It also includes the oil wax canned product paste crack detection equipment as described in any one of claims 1 to 7.