Flat wire drawing equipment with mold temperature monitoring and alarming functions
By installing temperature measuring devices and alarms on the mold of the flat wire drawing equipment, the problems of product defects and mold damage caused by lubricating fluid rupture are solved, accurate monitoring of mold temperature and timely alarm are achieved, ensuring production stability and quality.
Patent Information
- Application Number
- CN202421923533.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-08-09
AI Technical Summary
Existing flat wire drawing equipment generates heat due to friction during multiple die passes, causing the lubricating fluid to break, resulting in the flat wire being pulled hard against the die, affecting product quality and damaging the die. It also lacks real-time temperature monitoring and alarm mechanisms.
Temperature measuring devices are installed on the dies of the pre-treatment and secondary treatment mechanisms of the flat wire drawing equipment, and real-time temperature monitoring is performed using thermocouple temperature transmitters or sensors. The alarm device is connected to the operation cabinet for accurate and stable alarms to ensure the normal operation of the equipment and product quality.
It realizes accurate monitoring and timely alarm of mold temperature, avoids product defects and mold damage caused by lubricating fluid rupture, and improves production stability and flat wire quality.
Smart Images

Figure CN223352558U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of enameled wire production equipment, in particular to flat wire drawing equipment with a mold temperature monitoring and alarm function. Background Art
[0002] The production of existing enameled flat wire typically involves several steps: metal wire preparation, wire processing, flat wire drawing, painting, drying and curing, and winding and packaging. In the third step, the flat bare wire must be drawn through a specialized wire drawing machine. A wire take-up machine then winds the wire into a reel. A wire pay-off machine then pays out the wire before cleaning and painting. As can be seen from the aforementioned production process, the take-up and pay-off processes can reduce production efficiency. Furthermore, these processes can easily damage the bare flat wire surface and may also cause wire breakage during the take-up and pay-off processes, ultimately impacting the quality of the enameled flat wire.
[0003] For example, Chinese patent application document CN201020279032.7 discloses an online flat wire drawing machine. The utility model relates to an online flat wire drawing machine, characterized in that it includes a frame, a first column and a second column disposed at each end of the frame, a wire inlet guide pulley disposed on the upper portion of the first column, and a wire outlet guide pulley disposed on the upper portion of the second column; a first drawing die frame, a first drawing drum, a second drawing die frame, and a second drawing drum sequentially mounted on the frame between the first and second columns; a first drawing die mounted on the first drawing die frame, and a second drawing die mounted on the second drawing die frame; a swing arm hinged to the second column, a tension guide pulley disposed at the front end of the swing arm, a counterweight disposed on a sliding sleeve on the swing arm, and a set screw securing the counterweight to an upper limit on the swing arm. After drawing, the flat bare wire directly enters the cleaning and painting process, eliminating the intermediate winding and unwinding processes and reducing intermediate links.
[0004] However, the applicant found that the above scheme used multiple drawing and molding methods to ensure the plastic quality of the flat wire and then directly entered the cleaning and painting process. However, due to the multiple molding operations, friction and heat generation with the metal wire are inevitable during the drawing and molding process, so a drawing lubricant is needed for cooling and lubrication. In the actual production process, due to external factors, the drawing liquid may occasionally break. When the drawing liquid breaks, the flat wire will be directly pulled hard with the mold, resulting in defective products and damage to the mold.
[0005] In response to the above problems, the utility model provides a flat wire drawing equipment that can install a temperature measuring device on the mold to measure the temperature of the mold in real time, connect an alarm to issue an accurate and stable alarm, ensure the normal working state of the wire drawing machine, and ensure the quality of the output flat wire. Utility Model Content
[0006] The utility model provides a flat wire drawing device which can install a temperature measuring device on the mold to measure the temperature of the mold in real time, connect an alarm to give an accurate and stable alarm, ensure the normal working state of the wire drawing machine, and ensure the quality of the output flat wire.
[0007] The above technical objectives of the present invention are achieved through the following technical solutions:
[0008] A flat wire drawing equipment with a mold temperature monitoring and alarm function includes a pretreatment mechanism, a calendering mechanism, a secondary treatment mechanism, an operating cabinet and an alarm device; the pretreatment mechanism includes a feed wheel, a pretreatment mold, and a traction wheel, and the pretreatment mold is provided with a first temperature measuring device; the secondary treatment mechanism includes a diameter gauge, a secondary treatment mold, a secondary traction wheel, and a discharge wheel, and the secondary treatment mold is provided with a second temperature measuring device; the alarm device is connected to a processing chip in the operating cabinet for prompting an alarm; the first temperature measuring device and the second temperature measuring device are connected to the processing chip.
[0009] As a preferred embodiment of the present invention, the first temperature measuring device and the second temperature measuring device are thermocouple temperature transmitters or thermocouple temperature sensors. A first mounting hole is provided on the first mold sleeve of the pretreatment mold corresponding to the first temperature measuring device. The measuring end of the first temperature measuring device is connected to the pretreatment mold through the first mounting hole. The junction box of the first temperature measuring device is arranged on the outside of the first mold sleeve. A second mounting hole is provided on the second mold sleeve of the secondary treatment mold corresponding to the second temperature measuring device. The measuring end of the second temperature measuring device is connected to the secondary treatment mold through the second mounting hole. The junction box of the second temperature measuring device is arranged on the outside of the second mold sleeve.
[0010] As a preferred embodiment of the present invention, the first mold sleeve is provided with a heat insulation layer on one side of the first temperature measuring device junction box, and the second mold sleeve is provided with the heat insulation layer on one side of the second temperature measuring device junction box.
[0011] As a preferred embodiment of the present invention, the first temperature measuring device is arranged on a side of the first die sleeve away from the wire drawing lubricating fluid supply portion, and an isolation plate for isolating the wire drawing lubricating fluid from directly contacting the first temperature measuring device is provided in the first die sleeve between the wire drawing lubricating fluid supply portion and the first temperature measuring device, the first temperature measuring device is arranged below the isolation plate, and the first temperature measuring device is not in contact with the isolation plate; the second temperature measuring device is arranged on a side of the second die sleeve away from the wire drawing lubricating fluid supply portion, and an isolation plate for isolating the wire drawing lubricating fluid from directly contacting the second temperature measuring device is provided in the second die sleeve between the wire drawing lubricating fluid supply portion and the second temperature measuring device, the second temperature measuring device is arranged below the isolation plate, and the second temperature measuring device is not in contact with the isolation plate.
[0012] As a preferred embodiment of the present invention, the pretreatment mechanism also includes a first positioning wheel arranged between the feed wheel and the pretreatment mold, and the discharge end of the first positioning wheel can be extended to coincide with the inlet of the pretreatment mold; the secondary treatment mechanism also includes a second positioning wheel arranged at the front end of the caliper, and the discharge end of the second positioning wheel can be extended to coincide with the inlet of the caliper.
[0013] As a preferred embodiment of the present invention, the pre-processing mechanism is further provided with a first line dividing wheel, the number of lines in the first line dividing wheel is less than or equal to the number of lines in the traction wheel; the secondary processing mechanism is further provided with a second line dividing wheel, the number of lines in the second line dividing wheel is less than or equal to the number of lines in the secondary traction wheel.
[0014] As a preferred embodiment of the present invention, the pretreatment mechanism is further provided with a first wire wheel and a first adjusting component for adjusting the movement of the first wire wheel, the first adjusting component includes a first rotating arm and a first telescopic arm, one end of the first rotating arm is axially connected to the side wall of the pretreatment mechanism, the first wire wheel and one end of the first telescopic arm are respectively connected to the other end of the first rotating arm, and the other end of the first telescopic arm is connected to the side wall of the pretreatment mechanism; the secondary treatment mechanism is further provided with a second wire wheel and a second adjusting component for adjusting the movement of the second wire wheel, the second adjusting component includes a second rotating arm and a second telescopic arm, one end of the second rotating arm is axially connected to the side wall of the pretreatment mechanism, the second wire wheel and one end of the second telescopic arm are respectively connected to the other end of the second rotating arm, and the other end of the second telescopic arm is connected to the side wall of the pretreatment mechanism.
[0015] In summary, the present invention can achieve the following multiple beneficial effects:
[0016] The flat wire drawing equipment provided in the solution of the present invention has temperature measuring devices added to the molds at various locations in the pretreatment mechanism and the secondary treatment mechanism in terms of structure, which directly measures the mold temperature and can obtain the mold temperature without being interfered with by other components of the equipment, thereby ensuring the accuracy of temperature measurement, the accuracy and timeliness of alarms, and the quality of the produced flat wires.
[0017] The utility model adopts the temperature measuring device of thermocouple temperature transmitter or thermocouple temperature sensor, which has the advantages of simple structure, wide measuring range, high precision, small inertia and convenient remote transmission of output signal, and stably ensures the stability and accuracy of temperature measurement.
[0018] An isolation plate is optimally set in the mold, and the wire drawing lubricant supply part is physically isolated from the temperature measuring device, thereby eliminating the direct contact of the wire drawing lubricant with the temperature measuring device, thereby affecting the temperature measurement data, thereby affecting the incorrect judgment of whether the wire drawing lubricant in the mold is cut off, and ensuring the accuracy of the judgment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the overall structure of a flat wire drawing equipment with a mold temperature monitoring and alarm function;
[0020] Figure 2 is a cross-sectional schematic diagram of a pretreatment mold connected to a first temperature measuring device;
[0021] Figure 3 It is a cross-sectional schematic diagram of the secondary processing mold and the second temperature measuring device in the connected state.
[0022] In the picture:
[0023] a——heat insulation layer, b——wire drawing lubricant supply part, c——isolation board;
[0024] 1 - pretreatment mechanism, 101 - feed wheel, 102 - pretreatment mold, 1021 - first mold sleeve, 1022 - first mounting hole, 103 - traction wheel, 104 - first positioning wheel, 105 - first line dividing wheel, 106 - first line drawing wheel, 107 - first adjustment assembly, 107a - first rotating arm, 107b - first telescopic arm;
[0025] 2——calendering mechanism;
[0026] 3 - secondary processing mechanism, 301 - caliper, 302 - secondary processing mold, 3021 - second mold sleeve, 3022 - second mounting hole, 303 - secondary traction wheel, 304 - discharge wheel, 305 - second positioning wheel, 306 - second line dividing wheel, 307 - second line drawing wheel, 308 - second adjustment assembly, 308a - second rotating arm, 308b - second telescopic arm;
[0027] 401 - first temperature measuring device, 402 - second temperature measuring device;
[0028] 5 - operating cabinet;
[0029] 6——Alarm device. DETAILED DESCRIPTION
[0030] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments as needed that do not contribute to creativity. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.
[0031] This solution is achieved through the following technical means:
[0032] Example 1: Refer to the attached Figure 1 In the production of flat wire drawing, lubricant is required for cooling and lubrication during the drawing process. If the lubricant is cut off during the drawing process, it will result in unstable product quality and damage to the mold. In this embodiment, a flat wire drawing machine is provided that can install a temperature measuring device on the mold to measure the mold temperature in real time, and connect an alarm to provide accurate and stable alarms, thereby ensuring the normal operation of the wire drawing machine and the quality of the flat wire produced. The equipment includes a pretreatment mechanism 1, a calendering mechanism 2, a secondary treatment mechanism 3, an operating cabinet 5, and an alarm device 6. The pretreatment mechanism 1 includes a feed wheel 101, a pretreatment mold 102, and a traction wheel 103. The pretreatment mold 102 is equipped with a first temperature measuring device 401. The secondary treatment mechanism 3 includes a caliper 301, a secondary treatment mold 302, a secondary traction wheel 303, and a discharge wheel 304. The secondary treatment mold 302 is equipped with a second temperature measuring device 402. The alarm device 6 is connected to a processing chip in the operating cabinet 5 to generate an alarm. The first and second temperature measuring devices 401 and 402 are connected to the processing chip. Temperature measuring devices are added to the molds at various locations in the pre-treatment mechanism and the secondary treatment mechanism to directly measure the mold temperature. This can obtain the mold temperature without being interfered with by other components of the equipment, ensuring the accuracy of temperature measurement, the accuracy and timeliness of alarms, and the quality of the produced flat wire.
[0033] The first temperature measuring device 401 and the second temperature measuring device 402 are thermocouple temperature transmitters or thermocouple temperature sensors. A first mounting hole 1022 is defined on the first mold sleeve 1021 of the pretreatment mold 102, corresponding to the first temperature measuring device 401. The measuring end of the first temperature measuring device 401 passes through the first mounting hole 1022 and connects to the pretreatment mold 102. The terminal box of the first temperature measuring device 401 is located outside the first mold sleeve 1021. A second mounting hole 3022 is defined on the second mold sleeve 3021 of the secondary treatment mold 302, corresponding to the second temperature measuring device 402. The measuring end of the second temperature measuring device 402 passes through the second mounting hole 3022 and connects to the secondary treatment mold 302. The terminal box of the second temperature measuring device 402 is located outside the second mold sleeve 3021. Since real-time detection is performed by inserting the device into the mold, the accuracy of temperature monitoring of the pretreatment mold 102 and the secondary treatment mold 302 is improved. Thermocouples are a popular temperature measurement element because they measure temperature based on the different electrical conductivity of different materials. They are made from two long lengths of dissimilar metal wire welded together. By contacting one end of the thermocouple with the object being measured and connecting the other end to a display or measuring instrument, the object's temperature can be calculated from the sensed temperature difference. They offer many advantages, including simple structure, ease of manufacture, a wide measurement range, high accuracy, low inertia, and convenient output signal transmission. They require no external power supply, making them very convenient to use. Therefore, they are often used to measure the temperature of gases or liquids in furnaces and pipelines, as well as the surface temperature of solids. Furthermore, while both thermocouple temperature sensors and thermocouple temperature transmitters measure temperature based on the thermocouple principle, their functions and uses differ significantly. A thermocouple temperature sensor is a detection device that senses temperature and converts it into a usable output signal. It typically uses the thermocouple principle to measure temperature, directly converting the measured temperature into an electrical signal for output. A thermocouple temperature transmitter, on the other hand, converts the temperature signal into a standard electrical signal for output. It uses temperature-measuring elements such as thermocouples, which, after a series of circuit processing, are converted into a current or voltage signal output that is linearly related to temperature. In short, thermocouple temperature sensors directly measure temperature and output a signal, while thermocouple temperature transmitters not only measure temperature but also convert this signal into a standard electrical output for easy transmission and processing. Thermocouple temperature sensors are preferred when temperature monitoring and data recording are not required. Thermocouple temperature transmitters are preferred when recording process data for future analysis or traceability in industrial production.
[0034] Reference Figures 1 to 3In order to further improve the accuracy of the temperature measurement results and protect the first temperature measuring device 401 and the second temperature measuring device 402, an insulation layer a is provided at the connection between the first mold sleeve 1021 and the junction box of the first temperature measuring device 401, and an insulation layer a is provided at the connection between the second mold sleeve 3021 and the junction box of the second temperature measuring device 402. The insulation layer a can be selected as expanded polystyrene board (EPS board) or extruded polystyrene board (XPS board). The expanded polystyrene board (EPS board) or extruded polystyrene board (XPS board) can be selected according to the actual use environment and production cost.
[0035] Since the wire lubricant is generally supplied in a flat wire drawing machine by flow in or spraying, and the wire lubricant is generally supplied at the flow inlet of the mold or above the mold, it is uniformly set as the wire drawing lubricant supply part b in this application. Therefore, this application is designed to install the temperature measuring device in a farther area from the direct effect area of lubrication and cooling of the mold by the wire drawing lubricant supply part b, that is, on the side away from the wire drawing lubricant supply part b, and at the same time, an isolation plate c is added to physically isolate the temperature measuring device and the wire drawing lubricant without contact, thereby eliminating direct contact between the wire drawing lubricant and the temperature measuring device, and eliminating the extreme situation where there is wire drawing lubricant on the temperature measuring device while the wire drawing lubricant in the mold is already out of liquid, thereby ensuring the accuracy of judging whether the wire drawing lubricant is cut off by temperature.
[0036] The first temperature measuring device 401 is arranged on the side of the first die sleeve 1021 away from the wire drawing lubricant supply part b, and an isolation plate c is provided in the first die sleeve 1021 between the wire drawing lubricant supply part b and the first temperature measuring device 401 for isolating the wire drawing lubricant from directly contacting the first temperature measuring device 401. The first temperature measuring device 401 is arranged below the isolation plate c, and the first temperature measuring device 401 is not in contact with the isolation plate c; the second temperature measuring device 402 is arranged on the side of the second die sleeve 3021 away from the wire drawing lubricant supply part b, and an isolation plate c is provided in the second die sleeve 3021 between the wire drawing lubricant supply part b and the second temperature measuring device 402 for isolating the wire drawing lubricant from directly contacting the second temperature measuring device 402. The second temperature measuring device 402 is arranged below the isolation plate c, and the second temperature measuring device 402 is not in contact with the isolation plate c.
[0037] The pretreatment mechanism 1 also includes a first positioning wheel 104 arranged between the feed wheel 101 and the pretreatment mold 102. The discharge end of the first positioning wheel 104 can be extended to coincide with the feed port of the pretreatment mold 102. The secondary treatment mechanism 3 also includes a second positioning wheel 305 arranged at the front end of the caliper 301. The discharge end of the second positioning wheel 305 can be extended to coincide with the feed port of the caliper 301.
[0038] The pre-processing mechanism 1 is also provided with a first line dividing wheel 105, and the number of lines in the first line dividing wheel 105 is less than or equal to the number of lines in the traction wheel 103; the secondary processing mechanism 3 is also provided with a second line dividing wheel 306, and the number of lines in the second line dividing wheel 306 is less than or equal to the number of lines in the secondary traction wheel 303.
[0039] The pretreatment mechanism 1 is also provided with a first wire drawing wheel 106 and a first adjusting component 107 for adjusting the movement of the first wire drawing wheel 106, the first adjusting component 107 includes a first rotating arm 107a and a first telescopic arm 107b, one end of the first rotating arm 107a is axially connected to the side wall of the pretreatment mechanism, the first wire drawing wheel 106 and one end of the first telescopic arm 107b are respectively connected to the other end of the first rotating arm 107a, and the other end of the first telescopic arm 107b is connected to the side wall of the pretreatment mechanism; the secondary treatment mechanism 3 is also provided with a second wire drawing wheel 307 and a second adjusting component 308 for adjusting the movement of the second wire drawing wheel 307, the second adjusting component 308 includes a second rotating arm 308a and a second telescopic arm 308b, one end of the second rotating arm 308a is axially connected to the side wall of the pretreatment mechanism, the second wire drawing wheel 307 and one end of the second telescopic arm 308b are respectively connected to the other end of the second rotating arm 308a, and the other end of the second telescopic arm 308b is connected to the side wall of the pretreatment mechanism.
[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.
Claims
1. A flat wire drawing equipment with a mold temperature monitoring and alarm function, characterized by: The invention comprises a pre-treatment mechanism (1), a calendering mechanism (2), a secondary treatment mechanism (3), an operating cabinet (5) and an alarm device (6); the pre-treatment mechanism (1) comprises a feed wheel (101), a pre-treatment mold (102) and a traction wheel (103); the pre-treatment mold (102) is provided with a first temperature measuring device (401); the secondary treatment mechanism (3) comprises a caliper (301), a secondary treatment mold (302), a secondary traction wheel (303) and a discharge wheel (304); the secondary treatment mold (302) is provided with a second temperature measuring device (402); the alarm device (6) is connected to a processing chip in the operating cabinet (5) for prompting an alarm; the first temperature measuring device (401) and the second temperature measuring device (402) are connected to the processing chip.
2. The flat wire drawing equipment with mold temperature monitoring and alarm function according to claim 1, characterized in that: The first temperature measuring device (401) and the second temperature measuring device (402) are thermocouple temperature transmitters or thermocouple temperature sensors. A first mounting hole (1022) is provided on the first mold sleeve (1021) of the pretreatment mold (102) corresponding to the first temperature measuring device (401). The measuring end of the first temperature measuring device (401) passes through the first mounting hole (1022) and is connected to the pretreatment mold (102). A junction box of the first temperature measuring device (401) is arranged on the outside of the first mold sleeve (1021). A second mounting hole (3022) is provided on the mold sleeve of the secondary treatment mold (302) corresponding to the second temperature measuring device (402). The measuring end of the second temperature measuring device (402) passes through the second mounting hole (3022) and is connected to the secondary treatment mold (302). The junction box of the second temperature measuring device (402) is arranged on the outside of the second mold sleeve (3021).
3. The flat wire drawing equipment with mold temperature monitoring and alarm function according to claim 2, characterized in that: The first mold sleeve (1021) is provided with a heat insulation layer (a) on one side of the first temperature measuring device (401) junction box, and the second mold sleeve (3021) is provided with the heat insulation layer (a) on one side of the second temperature measuring device (402) junction box.
4. The flat wire drawing equipment with mold temperature monitoring and alarm function according to claim 2, characterized in that: The first temperature measuring device (401) is arranged on a side of the first die sleeve (1021) away from the wire drawing lubricating liquid supply part (b), and an isolation plate (c) for isolating the wire drawing lubricating liquid from directly contacting the first temperature measuring device (401) is provided between the wire drawing lubricating liquid supply part (b) and the first temperature measuring device (401) in the first die sleeve (1021), and the first temperature measuring device (401) is arranged below the isolation plate (c), and the first temperature measuring device (401) is not in contact with the isolation plate (c); The second temperature measuring device (402) is arranged on a side of the second die sleeve (3021) away from the wire drawing lubricating fluid supply part (b), and an isolation plate (c) for isolating the wire drawing lubricating fluid from directly contacting the second temperature measuring device (402) is provided between the wire drawing lubricating fluid supply part (b) and the second temperature measuring device (402) in the second die sleeve (3021). The second temperature measuring device (402) is arranged below the isolation plate (c), and the second temperature measuring device (402) does not contact the isolation plate (c).
5. The flat wire drawing equipment with mold temperature monitoring and alarm function according to claim 1, 3 or 4, characterized in that: The pretreatment mechanism (1) further comprises a first positioning wheel (104) provided between the feed wheel (101) and the pretreatment mold (102), wherein the discharge end of the first positioning wheel (104) can be extended to coincide with the feed inlet of the pretreatment mold (102); the secondary treatment mechanism (3) further comprises a second positioning wheel (305) provided at the front end of the caliper (301), wherein the discharge end of the second positioning wheel (305) can be extended to coincide with the feed inlet of the caliper (301).
6. The flat wire drawing equipment with mold temperature monitoring and alarm function according to claim 1, characterized in that: The pre-processing mechanism (1) is further provided with a first line dividing wheel (105), the number of lines in the first line dividing wheel (105) being less than or equal to the number of lines in the traction wheel (103); the secondary processing mechanism (3) is further provided with a second line dividing wheel (306), the number of lines in the second line dividing wheel (306) being less than or equal to the number of lines in the secondary traction wheel (303).
7. The flat wire drawing equipment with mold temperature monitoring and alarm function according to claim 1 or 6, characterized in that: The pretreatment mechanism (1) is further provided with a first wire wheel (106) and a first adjustment component (107) for adjusting the movement of the first wire wheel (106), the first adjustment component (107) comprising a first rotating arm (107a) and a first telescopic arm (107b), one end of the first rotating arm (107a) being axially connected to the side wall of the pretreatment mechanism, one end of the first wire wheel (106) and the first telescopic arm (107b) being respectively connected to the other end of the first rotating arm (107a), and the other end of the first telescopic arm (107b) being connected to the side wall of the pretreatment mechanism; The secondary processing mechanism (3) is further provided with a second wire drawing wheel (307) and a second adjusting assembly (308) for adjusting the movement of the second wire drawing wheel (307), the second adjusting assembly (308) comprising a second rotating arm (308a) and a second telescopic arm (308b), one end of the second rotating arm (308a) being axially connected to the side wall of the pre-processing mechanism, one end of the second wire drawing wheel (307) and the second telescopic arm (308b) being respectively connected to the other end of the second rotating arm (308a), and the other end of the second telescopic arm (308b) being connected to the side wall of the pre-processing mechanism.
Citation Information
Patent Citations
Online sheet-wire drawbench
CN201744509U