Feeding detection mechanism

Abstract

The utility model relates to the technical field of automatic equipment feeding, in particular to a feeding detection mechanism which comprises a feeding rack, the feeding rack is provided with a discharging roller used for installing a material coil, the feeding rack is further provided with a guide disc and a guide roller used for installing the guide disc, and the guide disc can move in the axial direction of the guide roller. The discharging roller feeding rack is further provided with an encoder for outputting signals, and a detection transmission structure is arranged between the input end of the encoder and one end of the discharging roller. A material belt of a material roll is unwound and advances continuously under the rotation of the guide roller, and the material belt can be prevented from deviating transversely under the guide of the guide disc; during unwinding, the input end of the encoder keeps one signal input all the time under the transmission connection of the detection transmission structure, if the phenomenon that a material belt is broken occurs, the unwinding roller stops rotating, the encoder receives the other signal input at the moment, an alarm signal can be transmitted through the encoder at the moment, and therefore the phenomenon that the material belt is broken is avoided. And a worker can be quickly reminded to inspect the equipment condition, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding of automatic equipment, in particular to a feeding detection mechanism. Background Art

[0002] The prepreg, also known as "PP sheet", is one of the main materials in the production of multilayer boards, mainly composed of resin and reinforcing materials. The reinforcing materials are divided into several types such as fiberglass cloth, paper base, and composite materials. Most of the prepregs (bonding sheets) used in the production of multilayer printed boards use fiberglass cloth as the reinforcing material.

[0003] In the preparation process of the prepreg, the prepreg raw materials are generally supplied in the form of a roll, and then after slitting and cutting, the corresponding specifications of prepregs are obtained to meet the customer requirements. At present, the above-mentioned prepregs are cut by a cutting machine. Usually, when cutting the rolled prepreg, it is necessary to heat the cutting part of the prepreg first, and then cut it with a transverse cutter and / or a longitudinal cutter. However, the whole process of the existing cutting machine from feeding to discharging is continuous. When using the transverse cutter for transverse cutting, the prepreg will have an instantaneous pause. At this time, if feeding is carried out, a certain section of the prepreg will be slightly stacked, resulting in uneven heating. When the prepreg is cut under the condition of uneven heating, white edge phenomenon is likely to occur.

[0004] The prior utility model application with the application number of CN202220486537.3 discloses a feeding mechanism for a cutting machine, including a first rack and a second rack arranged relatively parallel to each other, and a feeding component and a rewinding component located between the first rack and the second rack; the feeding component includes a feeding air shaft, a feeding shaft, a first feeding traction shaft and a second feeding traction shaft; a first buffer component is arranged between the first feeding traction shaft and the second feeding traction shaft; the rewinding component includes a guiding shaft, a pressing roller used in cooperation with the guiding shaft, and a discharging air shaft, and a second buffer component is arranged on one side of the feeding end of the guiding shaft. By adding the first buffer component, the utility model adds a buffer process for the continuous transportation process of the prepreg raw materials, avoiding the white edge phenomenon of the strip-shaped prepregs formed after transverse cutting; at the same time, by setting the rewinding component, the discarded part of the prepreg during the cutting process can be directly wound into a roll for recycling.

[0005] When feeding and unwinding, the reel is placed into the unwinding roller, and the unwinding roller rotates drivenly for unwinding. When the material tape breaks, it is impossible to judge whether it breaks, and the staff cannot reach the equipment area in time for detection. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a feeding detection mechanism aiming at the deficiencies of the prior art.

[0007] To achieve the above object, the technical solution of the present utility model is as follows:

[0008] The feeding and detecting mechanism includes a feeding rack, on which a feeding roller for installing a material roll is provided. The feeding rack is also provided with a guiding disc and a guiding roller for installing the guiding disc, and the guiding disc can axially move on the guiding roller; an encoder for outputting signals is further provided on the feeding rack of the feeding roller, and a detecting transmission structure is arranged between the input end of the encoder and one end of the feeding roller.

[0009] Further: The detecting transmission structure includes a first gear nested at one end of the feeding roller and a second gear installed at the input end of the encoder, and the first gear and the second gear are meshed for transmission.

[0010] Further: The feeding rack is also provided with a blocking mechanism for controlling the rotation of the feeding roller, and the blocking mechanism includes a friction block that can radially move closer to or away from the feeding roller.

[0011] Further: The friction block is formed with an arc-shaped groove that frictionally contacts the surface of the feeding roller, and the blocking mechanism further includes a blocking telescopic cylinder with a driving end connected to the friction block, and the blocking telescopic cylinder drives the friction block to radially move closer to or away from the feeding roller.

[0012] Further: The number of guiding rollers is two, which are respectively located on both sides of the material roll. A guiding connection sleeve is slidably installed on the guiding roller, the guiding disc is installed on the guiding connection sleeve, and the feeding rack is provided with a guiding motor for driving the guiding roller to rotate.

[0013] Further: The feeding rack is also provided with an installation structure for disassembling and installing the feeding roller, and the installation structure includes a notch groove formed on the feeding rack, and the notch groove is connected with a transverse support plate for slidably supporting the feeding roller.

[0014] Further: A support bearing is nested on the feeding roller, and the transverse support plate is formed with a sliding installation groove for installing the support bearing along the length direction.

[0015] Further: A pair of spaced-apart driving rollers are arranged above the guiding roller, and a gap for the feeding belt to pass through is formed between the two driving rollers. One of the inner driving rollers rotates actively, and the other outer driving roller rotates drivenly.

[0016] Further: The feeding rack includes a pair of spaced-apart feeding side plates, the two feeding side plates are arranged parallel to each other at intervals, and the feeding roller is installed between the two feeding side plates.

[0017] Advantages of the present utility model: The material roll to be unrolled is nested on the unwinding roller, and the unwinding roller is movably installed in the loading frame. The material tape of the material roll is continuously unrolled and advanced under the rotation of the guiding roller. Under the guidance of the guiding disc, the lateral deviation of the material tape can be prevented. When unwinding, one of the signal inputs is always maintained at the input end of the encoder under the transmission connection of the detection transmission structure. If the material tape breaks, the unwinding roller will stop rotating. At this time, the encoder will receive another signal input, and an alarm signal can be transmitted through the encoder, which can quickly remind the staff to check the equipment situation and improve the maintenance efficiency. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the loading and detection mechanism.

[0019] Figure 2 It is a partially enlarged schematic diagram of the loading and detection mechanism.

[0020] Reference numerals include:

[0021] 1 - Loading frame,

[0022] 11 - Loading side plate, 12 - Notch groove, 13 - Lateral support plate, 14 - Support bearing,

[0023] 15 - Sliding installation groove, 16 - Guiding roller, 17 - Guiding disc, 18 - Guiding connecting sleeve, 19 - Guiding motor, 2 - Detection transmission structure,

[0024] 21 - Unwinding roller, 22 - Encoder, 23 - First gear, 24 - Second gear, 25 - Blocking mechanism,

[0025] 26 - Friction block, 27 - Arc groove, 28 - Blocking telescopic cylinder, 29 - Driving roller. Detailed Embodiment

[0026] The present utility model is described in detail below with reference to the drawings.

[0027] As Figure 1-2 shown, the loading and detection mechanism includes a loading frame 1. The loading frame 1 is provided with an unwinding roller 21 for installing the material roll. The loading frame 1 is further provided with a guiding disc 17 and a guiding roller 16 for installing the guiding disc 17. The guiding disc 17 can move axially on the guiding roller 16. The loading frame 1 of the unwinding roller 21 is further provided with an encoder 22 for outputting signals. A detection transmission structure 2 is provided between the input end of the encoder 22 and one end of the unwinding roller 21.

[0028] The material roll that needs to be unrolled is nested on the unwinding roller 21. The unwinding roller 21 is movably installed in the loading frame 1. The material tape of the material roll is continuously unrolled and advanced under the rotation of the guiding roller 16. Under the guidance of the guiding disk 17, the lateral deviation of the material tape can be prevented. During unwinding, one of the signal inputs is always maintained at the input end of the encoder 22 under the driving connection of the detection driving structure 2. If the phenomenon of material tape breakage occurs, the unwinding roller 21 stops rotating. At this time, the encoder 22 will receive another signal input, and an alarm signal can be transmitted through the encoder 22 at this time, which can quickly remind the staff to check the equipment situation and improve the maintenance efficiency.

[0029] The loading frame 1 includes a pair of loading side plates 11 arranged at intervals. The two loading side plates 11 are arranged parallel to each other at intervals, and the unwinding roller 21 is installed between the two loading side plates 11.

[0030] The loading frame 1 is also provided with an installation structure for disassembling and installing the unwinding roller 21. The installation structure includes a notch groove 12 formed on the loading frame 1. The notch groove 12 is connected with a lateral support plate 13 for slidably supporting the unwinding roller 21. When it is necessary to disassemble and install the unwinding roller 21, the unwinding roller 21 is slidably supported by the lateral support plate 13, and the material tray after unwinding can be removed and replaced.

[0031] Further, the unwinding roller 21 is nested with a support bearing 14. The lateral support plate 13 is formed with a sliding installation groove 15 for installing the support bearing 14 along the length direction. The support bearing 14 can roll along the sliding installation groove 15, away from or close to the notch groove 12, so as to disassemble and install the unwinding roller 21 and facilitate the replacement of the material roll.

[0032] It should be noted that after the support bearing 14 is installed in the notch groove 12, it is positioned and installed through the clamping structure to prevent the unwinding roller 21 from shifting and improve the installation stability of the unwinding roller 21.

[0033] Specifically, the detection driving structure 2 includes a first gear 23 nested at one end of the unwinding roller 21 and a second gear 24 installed at the input end of the encoder 22. The first gear 23 and the second gear 24 are meshed and driven. During unwinding, the unwinding roller 21 is a driven roller. The first gear 23 rotates and meshes with the second gear 24 to input a first signal to the encoder 22 through the second gear 24. At this time, when the encoder 22 receives the first signal, it outputs a first pulse signal to confirm that the unwinding roller 21 is in a normal rotation and unwinding state. If the phenomenon of material tape breakage occurs, the unwinding roller 21 will pause rotating. At this time, both the first gear 23 and the second gear 24 stop rotating. At this time, the encoder 22 receives a second signal and outputs a second pulse signal. The second pulse signal can be connected to the alarm system signal to remind the staff to perform maintenance in time and prevent the suspension from affecting the production efficiency for too long.

[0034] The feeding rack 1 is also provided with a blocking mechanism 25 for controlling the rotation of the unwinding roller 21. The blocking mechanism 25 includes a friction block 26 that can move radially closer to or away from the unwinding roller 21. Under the friction of the friction block 26, the rotation speed of the unwinding roller 21 can be adjusted, thereby adjusting the unwinding speed of the material tape.

[0035] Specifically, the friction block 26 is formed with an arc-shaped groove 27 that frictionally contacts the surface of the unwinding roller 21. The blocking mechanism 25 also includes a blocking telescopic cylinder 28 whose driving end is connected to the friction block 26. The blocking telescopic cylinder 28 drives the friction block 26 to move radially closer to or away from the unwinding roller 21. A control board can be set, and the control board is signal-connected to the blocking telescopic cylinder 28. When the blocking telescopic cylinder 28 receives that the unwinding roller 21 unwinds too fast, the blocking telescopic cylinder 28 will extend, driving the friction block 26 to approach the unwinding roller 21. The formed arc-shaped groove 27 will frictionally contact the unwinding roller 21, which can increase the contact area, quickly reduce the rotation speed of the unwinding roller 21, or be able to quickly brake the unwinding roller 21.

[0036] The number of the guiding rollers 16 is two, which are respectively located on both sides of the material roll. The guiding rollers 16 are respectively installed on the feeding side plates 11. The guiding rollers 16 are slidably installed with guiding connection sleeves 18, and the guiding discs 17 are installed on the guiding connection sleeves 18. The feeding rack 1 is provided with a guiding motor 19 for driving the guiding rollers 16 to rotate. The guiding motor 19 drives the guiding rollers 16 to rotate, so as to guide the unwound material tape to move forward. Cooperating with the guiding discs 17, it can prevent the phenomenon of lateral displacement of the material tape during the unwinding and forward movement.

[0037] Above the guiding rollers 16, a pair of spaced transmission rollers 29 are provided. A gap for the material tape to pass through is formed between the two transmission rollers 29. One of the inner transmission rollers 29 rotates actively, and the other outer transmission roller 29 rotates drivenly. The material tape after passing through the guiding rollers 16 enters between the two transmission rollers 29 arranged with a gap. The transmission rollers 29 rotate under the drive of the motor to continue to convey the material tape forward, which is convenient for subsequent cutting.

[0038] In summary, it can be seen that the present utility model has the above-mentioned excellent characteristics, so that it can enhance the efficiency that has never existed in the prior art during use and has practicability, becoming a product with extremely high practical value.

[0039] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present utility model.

Claims

1. Loading and detecting mechanism, including a loading frame, wherein the loading frame is provided with a pay-off reel for installing a coil, and is characterized in that: The feeding rack is further provided with a guiding disc and guiding rollers for mounting the guiding disc, and the guiding disc can move axially on the guiding rollers; the feeding rack of the unwinding roller is further provided with an encoder for outputting signals, and a detection transmission structure is arranged between the input end of the encoder and one end of the unwinding roller.

2. The feeding and detecting mechanism according to claim 1, wherein: The detection transmission structure includes a first gear nested at one end of the unwinding roller and a second gear mounted on the input end of the encoder, and the first gear and the second gear are in meshing transmission.

3. The feeding and detecting mechanism according to claim 1, characterized in that: The feeding rack is further provided with a blocking mechanism for controlling the rotation of the unwinding roller, and the blocking mechanism includes friction blocks that can move radially closer to or away from the unwinding roller.

4. The feeding and detecting mechanism according to claim 3, wherein: The friction blocks are formed with arc-shaped grooves that are in frictional contact with the surface of the unwinding roller, and the blocking mechanism further includes a blocking telescopic cylinder with a driving end connected to the friction blocks, and the blocking telescopic cylinder drives the friction blocks to move radially closer to or away from the unwinding roller.

5. The feeding and detecting mechanism according to claim 1, wherein: The number of the guiding rollers is two, which are respectively located on both sides of the coil. The guiding rollers are slidably mounted with guiding connection sleeves, and the guiding disc is mounted on the guiding connection sleeves. The feeding rack is provided with a guiding motor for driving the guiding rollers to rotate.

6. The feeding and detecting mechanism according to claim 1, wherein: The feeding rack is further provided with a mounting structure for disassembling and installing the unwinding roller. The mounting structure includes a notch groove formed in the feeding rack, and the notch groove is connected with a transverse support plate for slidably supporting the unwinding roller.

7. The feeding and detecting mechanism according to claim 6, wherein: The unwinding roller is nested with a support bearing, and the transverse support plate is formed with a sliding mounting groove for mounting the support bearing along the length direction.

8. The feeding and detecting mechanism according to claim 1, wherein: A pair of spaced transmission rollers are arranged above the guiding rollers, and a gap for the feeding belt to pass through is formed between the two transmission rollers. One of the inner transmission rollers rotates actively, and the other outer transmission roller rotates passively.

9. The feeding and detecting mechanism according to any one of claims 1 to 8, characterized in that: The feeding rack includes a pair of spaced feeding side plates, and the two feeding side plates are arranged parallel to each other at intervals, and the unwinding roller is mounted between the two feeding side plates.

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