Anti-skid limiting point forming equipment for hinge shaft of air door baffle

Abstract

The air door baffle hinge shaft anti-skid limiting point forming equipment comprises a forming die, a thermal softening module and a chuck, is provided with a forming driver and a shaft cutting module, and is further provided with a shaft moving seat. In the working process, the thermal softening module conducts thermal softening on the rear portion of the first section of the metal shaft bar, the chuck clamps the metal shaft bar and conveys the metal shaft bar forwards, the forming driver drives the pressing head of the forming die to extrude the rear portion of the first section of the metal shaft bar to enable the rear portion to partially protrude, and the shaft cutting module cuts off the first section of the metal shaft bar to serve as a hinge shaft of an air door baffle. The outer wall of the rear portion of the hinge shaft is not a regular circular wall any more, and the hinge shaft is not prone to slipping with the baffle plate body under the common clamping of the baffle plate body and the auxiliary block during assembly. And the shaft moving seat drives the chuck to move backwards to be aligned with the second clamped part of the metal shaft bar, and synchronously drives the thermal softening module to move backwards to be aligned with the rear part of the second section of the metal shaft bar, so that the rear part of the second section of the metal shaft bar can be thermally softened by the thermal softening module without adjusting the axial positions of the thermal softening module and the metal shaft bar.

Description

Technical Field

[0001] This invention relates to the field of damper hinge shaft technology, and more specifically to a damper hinge shaft anti-slip limiting point forming equipment. Background Technology

[0002] A damper is a regulating device installed in a ventilation duct, primarily used to control airflow. It consists of a frame and a baffle hinged within the frame. Under normal conditions, the baffle remains closed to block airflow. In the event of a fire, the duct can be opened manually by rotating the baffle via a hinge shaft. The hinge shaft is typically made from a single, segmented shaft with a regular circular outer wall for hinged installation with the frame. During assembly, the baffle and an auxiliary block clamp the rear of the hinge shaft, which is then hinged to the frame via the front. However, due to the circular outer wall of the rear of the hinge shaft, slippage can easily occur between it and the baffle when transmitting torque, causing the hinge shaft to spin freely while the baffle fails to open and close synchronously, affecting operational reliability. To solve this problem, a common practice is to perform an additional localized heat fusion connection between the rear of the hinge shaft and the baffle. However, since the baffle is usually thin, it is prone to thermal deformation due to the localized high temperatures during the heat fusion process, affecting the sealing effect when the damper is closed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a forming device for anti-rotation limiting point of damper baffle hinge shaft. The damper baffle hinge shaft formed by this forming device is not easy to slip with the baffle plate after assembly.

[0004] To solve the above-mentioned technical problems, the present invention provides a forming device for anti-slip limiting points of the damper baffle hinge shaft, comprising a forming mold, a heat softening module, and a chuck arranged sequentially from front to back. The heat softening module is a cylindrical shape with a front-to-back axial direction, through which the rear part of the first section of the metal shaft rod is inserted. The heat softening module heat softens the rear part of the first section of the metal shaft rod. The chuck clamps the first clamped part of the metal shaft rod and transports the metal shaft rod forward to the forming chamber of the forming mold where the rear part of the first section reaches. A forming driver is provided to drive the pressure head of the forming mold to extend into the forming chamber and laterally squeeze the rear part of the first section of the metal shaft rod, causing it to deform locally and bulge vertically to form anti-slip limiting points. A shaft cutting module is provided to cut the first section of the metal shaft rod from the metal shaft rod body to serve as the damper baffle hinge shaft. A shaft shifting seat is provided, on which the heat softening module and the chuck are both mounted. The shaft shifting seat drives the chuck to move backward to align with the second clamped part of the metal shaft rod, and simultaneously drives the heat softening module to move backward to align with the rear part of the second section of the metal shaft rod.

[0005] Furthermore, the heat softening module is a C-shaped cylinder with its opening facing downwards, and the shaft shifter is equipped with a lifting and avoidance module to drive the heat softening module upwards and away from the heat softened metal shaft to avoid the forming mold.

[0006] Furthermore, the molding die includes a first molding template and a second molding template arranged horizontally side by side. The two molding templates close together to form a molding cavity. The molding driver drives the first molding template to move towards the second molding template until the two molding templates close together. Then, the two molding templates together hold the rear part of the first section of the metal shaft, and the first molding template is blocked by the second molding template and cannot continue to move towards the second molding template. After the two molding templates close together, the molding driver drives the pressure head to extend into the molding cavity of the molding die and laterally squeeze the metal shaft.

[0007] Furthermore, the forming mold includes a positioning template located behind the forming template. The positioning template has a through hole for the metal shaft to pass through and extend into the forming chamber. A top block is provided on the side of the second forming template away from the first forming template to abut against the second forming template. A top block is provided to drive the top block. The shaft cutting module mainly consists of the forming mold, the top block removal driver, and the forming driver. After the pressure head extends into the forming chamber, the top block is driven by the top block to remove the abutment against the second forming template, and the forming driver drives the first forming template to continue to approach the second forming template. Then, the two forming templates together drive the first section of the metal shaft to move laterally relative to the metal shaft body until the first section of the metal shaft is cut off from the metal shaft body.

[0008] Furthermore, an extrusion template is provided on the outside of the first forming template. The first forming template has a pressure head receiving groove. An extrusion column extends from the extrusion template toward the first forming template and extends into the pressure head receiving groove. A spring is sandwiched between the extrusion template and the first forming template. The forming driver drives the extrusion template. The extrusion template is driven to indirectly move the first forming template closer to the second forming template and close. When the extrusion template continues to move closer to the second forming template against the spring force, the extrusion column extends out of the pressure head receiving groove and acts as a pressure head, extending into the forming chamber to laterally extrude the metal shaft.

[0009] Furthermore, a conveyor belt and a storage box are provided in front of the molding die. The storage box has a J-shaped storage cavity with upper and lower openings. A sealing plate is hinged at the upper opening. The conveyor belt receives the formed damper hinge shaft and sends it to the upper opening of the storage box. The damper hinge shaft then presses down on the sealing plate, causing the sealing plate to rotate downwards and open the upper opening. With the upper opening open, the damper hinge shaft naturally falls into the storage cavity. A return torsion spring is provided at the sealing plate. When the damper hinge shaft falls into the storage cavity and no longer presses down on the sealing plate, the return torsion spring causes the sealing plate to reset and close the upper opening. The lower opening faces upwards and connects to the outside, serving as a material retrieval port for a person to reach into the storage cavity and retrieve the damper hinge shaft that has fallen into the storage cavity.

[0010] Furthermore, the conveyor belt is a metal mesh conveyor belt, and an upward-blowing cooling fan is installed below the conveyor belt. The airflow generated by the cooling fan passes through the conveyor belt and then flows through the hinged shaft of the damper to dissipate heat.

[0011] When the molding equipment of this invention is in operation, the heat softening module first softens the rear part of the first section of the metal shaft. Then, the chuck clamps the metal shaft and conveys it forward to the molding chamber of the molding mold. Next, the molding driver drives the pressure head of the molding mold to squeeze the rear part of the first section of the metal shaft, causing it to bulge locally. Finally, the shaft cutting module cuts the first section of the metal shaft off the metal shaft body to serve as the hinge shaft of the damper baffle. Because the rear part of the first section of the metal shaft is vertically bulging, the outer wall of the rear part of the hinge shaft is no longer a regular circular wall. During assembly, it is less likely to slip with the baffle body when clamped by the baffle plate and the auxiliary block. This vertical bulge serves as an anti-rotation limiting point for the first section of the metal shaft, playing an anti-rotation limiting role. Since both the heat softening module and the chuck are mounted on the shaft shifter, after the chuck completes the transport of the metal shaft, the shaft shifter moves the chuck backward to align with the second clamping part of the metal shaft. During this process, the heat softening module is simultaneously moved backward to align with the rear part of the second section of the metal shaft. Therefore, the rear part of the second section of the metal shaft can be heat softened by the heat softening module without adjusting the axial position of the heat softening module and the metal shaft. Attached Figure Description

[0012] Figure 1 This is a top view of the forming equipment for the anti-rotation limit point of the damper baffle hinge shaft.

[0013] Figure 2 It is a schematic diagram of the forming frame and the linear module, clamp, photoelectric switch, thermal softening module and forming module installed on it. In the diagram, the second drive rod of the lifting and avoidance module has extended downward.

[0014] Figure 3 This is a schematic diagram of the shaft being supported on the support structure of the support frame.

[0015] Figure 4 It is a schematic diagram of the forming frame and the linear module, clamp, heat softening module and forming module installed on it. In the figure: the second drive rod of the lifting and avoidance module is retracted upwards, and the second clamping finger and the first clamping finger together clamp the first clamped segment.

[0016] Figure 5 It is a schematic diagram of the forming frame and the linear module, clamp, heat softening module and forming module installed on it. In the diagram, the first clamping finger and the second clamping finger convey the shaft forward until its first section enters the forming module.

[0017] Figure 6 It is a schematic diagram of the forming frame and the linear module, clamp, heat softening module and forming module installed on it. In the diagram, the first clamping finger and the second clamping finger are aligned with the second clamped part and the heat softening module is aligned with the rear part of the second section.

[0018] Figure 7It is a cross-sectional view of the damper baffle plate and the auxiliary block jointly clamping the first hinge axis.

[0019] Figure 8 It is an exploded view of the forming mold, ejector block, ejection driver and spring return assembly.

[0020] Figure 9 yes Figure 8 A magnified view of a portion of the image, showing a larger area. Figure 8 Part A.

[0021] Figure 10 yes Figure 1 BB cross-sectional view.

[0022] Figure 11 yes Figure 10 CC section view.

[0023] Figure 12 This is a sectional view of the left and right forming templates after they have been joined together. The sectioning position is... Figure 11 Consistent.

[0024] Figure 13 This is a cross-sectional view showing the extrusion column extending into the molding chamber, laterally extruding the rear part of the first section and causing it to deform and bulge vertically. The sectioning position is... Figure 10 Consistent.

[0025] Figure 14 This is a cross-sectional view of the first segment cut off from the rod by the left and right forming templates, with the cutting position being... Figure 11 Consistent.

[0026] Figure 15 This is a cross-sectional view of the second segment cut off from the rod by the left and right forming templates, with the cutting position being... Figure 11 Consistent.

[0027] Figure 16 This is a schematic diagram of a conveyor belt receiving shaft material and sending it to the upper cavity of the storage box.

[0028] Figure 17 This is a cross-sectional view of the top of the storage box and storage rack. Detailed Implementation

[0029] See the equipment for forming anti-slip limiting points of the damper baffle hinge shaft. Figure 1 and Figure 2The system includes a forming frame 100, on which a forming module 1 is positioned at the front and a conventional linear module 21 is positioned at the rear. A shaft shifter 22 is mounted on the linear module 21, and the shaft shifter 22 can move axially back and forth under the drive of the linear module 21. The shaft shifter 22 has a first gripper 231 and a second gripper 232 facing each other, and also has a gripper driver 233. The first gripper 231 is fixedly mounted on the shaft shifter 22. The gripper driver 233 is a conventional hydraulic cylinder, fixedly mounted on the shaft shifter 22 and located to the right of the first gripper 231, with its first drive rod (not shown in the figure due to perspective) extending to the left. The second gripper 232 is fixedly mounted on the first drive rod and can move to the left towards the first gripper 231 under the drive of the gripper driver 233, forming a gripper together with the first gripper 231. An L-shaped mounting rod 241 is fixedly mounted on the shaft shifter 22, with its end extending to the front and above the shaft shifter 22 and mounting a lifting and avoidance module 242. The lifting and avoidance module 242 is an existing hydraulic cylinder, with its second drive rod 2421 extending downwards and mounting a lifting plate 243. This molding equipment includes a heat softening module 244, which is a C-shaped cylinder formed by existing high-frequency induction coils in a front-to-back axial direction and with the opening facing downwards. It is mounted on the lifting plate 243 via mounting terminals 2441, located between the first gripper finger 231 and the molding module 1, with an axial center distance of 100mm between it and the first gripper finger 231. A support frame 200 is provided on the rear side of the molding frame 100. Both the gripper finger driver 233 and the lifting and avoidance module 242 are powered by corresponding hydraulic pumps (not shown in the figure). This molding equipment includes a controller (not shown in the figure), which controls the molding module 1 and the linear module 21, and also controls the hydraulic pump connected to it, thereby indirectly controlling the finger clamping driver 233 and the lifting and avoidance module 242.

[0030] See Figure 1 and Figure 3 The metal shaft 8 to be formed is a cylinder 3 to 6 meters long and 12.5 mm in diameter, and is placed on the support structure 201 of the support frame 200. See Figure 2 The metal shaft 8 passes from back to front, first between the first clamping finger 231 and the second clamping finger 232, then through the heat softening module 244, and is inserted into the forming module 1. In this state, the first segment 81 of the metal shaft 8 is located behind the forming module 1. The rod body 80 has a first clamping part 85 behind the first segment 81, and the axial center distance between the rear part 812 of the first segment and the first clamping part 85 is 100mm.

[0031] The staff started the molding equipment. After starting, see Figure 14 and Figure 15The controller controls the forming equipment to perform forming processing. This embodiment takes the forming of the first hinge shaft 91 and the second hinge shaft 92 on the metal shaft bar 8 as an example. The rear part 912 of the first hinge shaft and the rear part 922 of the second hinge shaft are identical, used for clamping and installing onto a damper baffle 300 of the same specification (see...). Figure 7 On the first hinge shaft 911 and the second hinge shaft 921, the lengths of the front part are different. The controller control method is as follows.

[0032] See Figure 14 The forming module 1 acts as a shaft-cutting module, cutting off the front end of the metal shaft 8 from the rod body 80. (See...) Figure 4 Based on the current axial position of the shaft shifter 22, the axial positions of the thermal softening module 244, the first clamping finger 231, and the second clamping finger 232 are calculated, and the first hinged shaft 91 (see...) is then... Figure 14 Corresponding to the first segment 81, the axial position of the rear part 812 of the first segment is calculated, and the axial position of the first clamping part 85 is calculated based on the axial position of the rear part 812. Based on each axial position, the required axial movement length of the heat softening module 244, the first clamping finger 231, and the second clamping finger 232 in the next step is calculated. According to the calculation results, the linear module 21 drives the shaft shifter 22 to move the heat softening module 244 and the first and second clamping fingers 231 and 232 axially synchronously until the heat softening module 244 is aligned with the rear part 812 of the first segment for insertion, thus covering its outer side. At this point, if... Figure 2 As shown, the first clamping finger 231 and the second clamping finger 232 are aligned with the first clamped portion 85. The heat softening module 244 is controlled to heat soften the rear portion 812 of the first section. After heat softening, the second drive rod 2421 of the lifting and avoidance module 242 is controlled to retract upwards, thereby driving the heat softening module 244 upwards and away from the heat softened rear portion 812. The clamping finger driver 233 is controlled to drive the second clamping finger 232 closer to the first clamping finger 231 until the second clamping finger 232 and the first clamping finger 231 are aligned. Figure 4 The first clamped part 85 is clamped together as shown. According to the first hinge shaft 91 (see... Figure 14 The length is controlled by the linear module 21 driving the shaft shifter 22, which in turn drives the first gripper 231 and the second gripper 232 to jointly convey the metal shaft 8 forward until the rear part 812 of the first section is as shown. Figure 11 As shown, it reaches the forming module 1. During this process, see Figure 5 The heat softening module 244 moves forward synchronously with the shaft shifter 22, but because the heat softening module 244 is now facing upwards and away from the metal shaft 8, it will not collide with the forming module 1. The forming module 1 is controlled as follows: Figure 13 As shown, the rear part 812 of the first segment is horizontally compressed to cause local deformation and vertical bulge, and then as... Figure 14As shown, the control molding module 1 acts as a shaft-cutting module, cutting the first segment 81 from the rod body 80 to form the first hinge shaft 91, used for the hinged installation of the damper baffle 300. See Figure 7 Because the rear part 812 of the first section is vertically raised, the outer wall of the rear part 912 of the first hinge shaft is no longer a regular circular wall. During assembly, under the joint clamping of the baffle plate 301 of the damper baffle 300 and the auxiliary block 302, it is not easy to slip with the baffle plate 301. That is, the vertical bulge of the rear part 812 of the first section serves as the anti-slip limiting point 915 of the first hinge shaft 91, playing an anti-slip limiting role.

[0033] See Figure 6 The second segment 82 of the metal shaft 8 is located behind the forming module 1. The shaft body 80 has a second clamping part 86 behind the second segment 82. The axial center distance between the rear part 822 of the second segment and the second clamping part 86 is 100mm. After the first clamping finger 231 and the second clamping finger 232 complete the conveying of the metal shaft 8, the controller controls the clamping finger driver 233 to drive the second clamping finger 232 away from the first clamping finger 231 to reset, thereby releasing the metal shaft 8. The controller calculates the axial positions of the first clamping finger 231 and the second clamping finger 232 based on the current axial position of the shaft shifter 22, and moves the second hinged shaft 92 (see...) Figure 15 Corresponding to the second segment 82, the axial position of the rear part 822 of the second segment is calculated, and the axial position of the second clamping part 86 is calculated based on the axial position of the rear part 822 of the second segment. Based on each axial position, the axial movement length of the first clamping finger 231 and the second clamping finger 232 in the next step is calculated. The control linear module 21 drives the shaft shifter 22 to move the first clamping finger 231 and the second clamping finger 232 backward until the first clamping finger 231 and the second clamping finger 232 are as shown. Figure 6 The two sections are aligned together, with the second clamped portion 86 as shown. Since the heat softening module 244 is also mounted on the shaft shifter 22, as the shaft shifter 22 moves the first clamping finger 231 and the second clamping finger 232 backward, it simultaneously moves the heat softening module 244 backward to face downward and align with the rear portion 822 of the second section. Therefore, after the first clamping finger 231 and the second clamping finger 232 have moved backward, the controller does not need to adjust the axial position of the heat softening module 244 and the metal shaft 8. It only needs to control the second drive rod 2421 of the lifting and avoiding module 242 to extend downward and reset, driving the heat softening module 244 to descend and cover the rear portion 822 of the second section, thus controlling the heat softening module 244 to heat soften the rear portion 822 of the second section. In the forming module 1, the first section 81 (see...) Figure 14 After being cut from the rod body 80, the controller controls the gripper driver 233 to drive the second gripper 232 closer to the first gripper 231 until the first gripper 231 and the second gripper 232 together clamp the second clamped part 86, according to the second hinge shaft 92 (see Figure 15The length is controlled by the linear module 21 driving the shaft shifter 22, which in turn drives the first gripper 231 and the second gripper 232 to jointly convey the metal shaft 8 forward until the rear section 822 of the second segment reaches the forming module 1 (see...). Figure 11 The molding module 1 is controlled to laterally extrude the rear part 822 of the second section, causing it to deform and bulge vertically. Then, the molding module 1 is controlled as follows: Figure 15 As shown, the second segment 82 is cut off from the rod 80 and used as the second hinge shaft 92.

[0034] The controller controls the forming equipment to continue forming the third section of the metal shaft 8 to obtain the third hinge shaft in the same way. The control method is the same as above and will not be repeated.

[0035] See Figure 2 A U-shaped bracket 25 is provided at the rear end of the linear module 21, and the metal shaft 8 is supported on the bracket 25. A photoelectric switch 251 connected to the controller is installed on the bracket 25. The metal shaft 8 passes through the middle of the photoelectric switch 251 and is blocked there. When the rear end of the metal shaft 8 is conveyed forward and leaves the middle of the photoelectric switch 251, the photoelectric switch 251 is triggered. Based on this, the controller determines that the remaining length of the metal shaft 8 is too short, and controls the molding equipment to stop working, waiting for the operator to replace the metal shaft.

[0036] See Figure 2 The molding module 1 includes a mold fixing frame 11 fixed on the molding frame 100, and a molding mold 19 is fixed on the mold fixing frame 11. See Figure 8 The molding die 19 includes a front fixed template 121, a rear fixed template 122, an upper fixed template 123, a lower fixed template 124, and a left fixed template 125. These five parts are fixedly installed together to form a molding template mounting frame 12 with the opening facing right. The molding template mounting frame 12 is fixedly installed on the mold fixing frame 11, and its interior is provided with a left molding template 13 and a right molding template 14. Figure 10 The lateral distance between the right end of the left forming template 13 and the left end of the right forming template 14 is 10mm. The right end face of the left forming template 13 has a first groove 139, while the left end face of the right forming template 14 has a second groove 149. (See...) Figure 8 and Figure 11 A top block 15 is provided between the left forming template 13 and the left fixed template 125 to abut against the left forming template 13. A spring return assembly 16 is also provided. The spring return assembly 16 is a mature existing technology and includes a return spring 161, a sliding rod 162, and a nut 163. A top removal driver 17 is fixedly installed on the forming mold 19. The top removal driver 17 is an existing hydraulic cylinder. Its third drive rod 171 drives the top block 15, which can drive the top block 15 to move axially to the desired position. Figure 14The state shown removes the resistance to the left forming template 13, allowing it to move to the left under external force to compress the spring return assembly 16. After the external force is removed, the spring return assembly 16 drives it to return to its rightward position. See... Figure 10 A molding actuator 18 is provided on the right side of the molding die 19. The molding actuator 18 is an existing hydraulic cylinder, which is mounted on the die holder 11. Its fourth drive rod 181 extends to the left and is fixedly mounted with a transmission block 182. The left end of the transmission block 182 extends to the left into the molding template mounting bracket 12 and is fixedly mounted with an extrusion template 183. See Figure 11 The extrusion template 183 is located outside the right forming template 14, with a 7.5mm wide transverse gap between them. A push plate spring 184 is installed on the extrusion template 183, which is sandwiched between the extrusion template 183 and the right forming template 14, pushing the right forming template 14 to the left. A limit rod 141 is installed on the right forming template 14, and the head 1411 of the limit rod is blocked by the extrusion template 183 and cannot move to the left relative to the extrusion template 183. Therefore, under normal conditions, the right forming template 14 will not move away from the extrusion template 183 due to being pushed by the push plate spring 184. The top removal driver 17 and the forming driver 18 are both driven by corresponding hydraulic oil pumps. The controller controls the connected hydraulic oil pumps, thereby indirectly controlling the top removal driver 17 and the forming driver 18.

[0037] See Figure 11 The rear fixed template 122 has a through hole 1221, and the heat softening module 244 is aligned with the through hole 1221. The front fixed template 121 has a P-shaped material discharge groove 1211 (see...). Figure 8 The top of the metal shaft 8 is aligned with the through hole 1221. When the worker places the metal shaft 8, the first front section 811 is inserted into the through hole 1221. As the metal shaft 8 is conveyed forward, the first front section 811 first passes through the through hole 1221 into the forming template mounting bracket 12 and then extends into the discharge chute 1211. The first rear section 812 first passes through the through hole 1221 into the forming template mounting bracket 12 and then sinks to the left into the first groove 139 of the left forming template 13.

[0038] See Figure 10 and Figure 11 After the first section 812 reaches the molding template mounting bracket 12, the controller controls the fourth drive rod 181 of the molding driver 18 to extend 10mm to the left. The fourth drive rod 181 drives the extrusion template 183 to move to the left via the transmission block 182. The extrusion template 183 indirectly drives the right molding template 14 to move 10mm to the left via the push plate spring 184. In this way, the right molding template 14 and the left molding template 13 close together, and the groove wall of the first groove 139 and the groove wall of the second groove 149 form the molding chamber 190 of the molding mold 19. In this state, as Figure 12As shown: the rear part 812 of the first segment has entered the molding chamber 190 and is held by the right molding template 14 and the left molding template 13; the right molding template 14 cannot move to the left because it is blocked by the left molding template 13.

[0039] See Figure 8 The right molding template 14 has a pressure head storage groove 142 leading to the molding chamber 190 (see...). Figure 13 The extrusion template 183 extends to the left with an extrusion column 1831, which extends into the pressure head receiving groove 142. The part of the left forming template 13 aligned with the pressure head receiving groove 142 is as follows: Figure 9 As shown, corresponding limit point storage slots 132 are provided. After the right molding template 14 and the left molding template 13 are closed, the controller controls the molding driver 18 (see...) Figure 10 The fourth drive lever 181 (see) Figure 10 Extending 7.5mm to the left, fourth drive lever 181 (see...) Figure 10 The extrusion template 183, driven by the transmission block 182, continues to move to the left and rests against the right forming template 14, overcoming the elastic force of the push plate spring 184. During this process, the extrusion columns 1831 on the extrusion template 183 move as follows: Figure 13 As shown, the pressure head, extending to the left beyond the pressure head receiving groove 142, serves as the pressure head of the molding die 19. It extends into the molding chamber 190 and laterally presses the rear part 812 of the first section, causing it to deform locally and bulge vertically into the limiting point receiving groove 132. (See...) Figure 12 The fixed template 122 is used as a positioning template, and the rod 80 is inserted into the through hole 1221, where it is positioned by the hole wall and cannot move laterally. The controller first controls the ejector driver 17 to drive the ejector block 15 to move axially to remove the obstruction on the left forming template 13, and then controls the forming driver 18 (see...) Figure 10 The fourth drive lever 181 (see) Figure 10 Continue extending 16mm to the left, fourth drive lever 181 (see...) Figure 10 The transmission block 182, extrusion template 183, right forming template 14, and left forming template 13 move synchronously to the left. The right forming template 14 and left forming template 13 together drive the first segment 81 to move laterally to the left relative to the rod 80. Figure 14 As shown, the first segment 81 is cut off from the rod body 80. Finally, the controller controls the forming driver 18 (see... Figure 10 The right molding template 14 and the left molding template 13 are reset in sequence. During this process, the right molding template 14 and the left molding template 13 separate and no longer hold the rear part 812 of the first section. The first section 81, as the first hinge shaft 91, falls down to the bottom of the molding mold 19.

[0040] The controller controls the forming module 1 to cut the front end of the metal shaft 8 from the rod body 80 in the same way and controls the forming module 1 to form and process the second hinge shaft 92, which will not be described in detail.

[0041] See Figure 1 A storage rack 400 is provided in front of the forming rack 100, see Figure 16 The storage rack 400 is equipped with a storage box 41, which is located in front of the molding die 19. Figure 17 The container has a J-shaped storage cavity 410 with an upper cavity opening 411 and a lower cavity opening 412. The upper cavity opening 411 is on the right and the lower cavity opening 412 is on the left. A sealing plate 413 is provided at the upper cavity opening 411. The left end 4131 of the sealing plate 413 is hinged to the box body 415. A return torsion spring (not shown in the figure) is provided at the hinge to apply torque to the sealing plate 413 so that the sealing plate 413 is kept in a horizontal position and closes the upper cavity opening 411 under normal conditions. An existing metal mesh conveyor belt 42 is provided between the storage box 41 and the molding mold 19. A cooling fan 43 blowing upwards is provided below the conveyor belt 42. The rear end of the conveyor belt (not shown in the figure due to the perspective) extends to the bottom of the molding mold 19, and the front end 421 of the conveyor belt extends to the upper cavity opening 411 of the storage box 41. The conveyor belt 42 receives the shaft material 90 (i.e., the first hinge shaft 91, the second hinge shaft 92, and subsequent hinge shafts formed) falling from the molding die 19. Driven by the conveyor motor 420, the conveyor belt 42 transports the shaft material 90 forward to the upper cavity opening 411. During this process, the airflow generated by the cooling fan 43 flows upward through the conveyor belt 42 and over the shaft material 90 to dissipate heat and cool it down. The shaft material 90 falls from the front end 421 of the conveyor belt onto the sealing plate 413, applying downward pressure to the sealing plate 413, causing it to overcome the torque of the return torsion spring and rotate downward to open the upper cavity opening 411. After the upper cavity opening 411 is opened, the shaft material 90 falls from the upper cavity opening 411 into the receiving cavity 410, no longer pressing down on the sealing plate 413. The sealing plate 413 then rotates upward to reset under the torque of the return torsion spring. Because the storage cavity 410 is J-shaped, its lower cavity opening 412 is close to the bottom of the storage cavity 410 and faces upwards to connect to the outside, serving as a material retrieval port, making it easy for users to reach into the storage cavity 410 to retrieve the shaft material 90. As the amount of shaft material 90 in the storage cavity 410 gradually increases, the shaft material 90 that falls later will accumulate on the right side of the storage cavity 410. The later the shaft material 90 enters, the higher its temperature and the closer its position is to the upper cavity opening 411, and the further away from the lower cavity opening 412. The sealing plate 413 keeps the upper cavity opening 411 closed under the action of the return torsion spring, effectively preventing operators from accidentally putting their hands into the high-temperature area. Users retrieve the material from the lower cavity opening 412, which is cooler and located lower, to avoid burns. The top wall of the storage rack 400 has a first heat dissipation hole 51, the bottom wall of the storage cavity 410 has a second heat dissipation hole 52, and the sealing plate 413 has a third heat dissipation hole 53, all for heat dissipation of the shaft material 90.

[0042] In other embodiments, the conveyor belt 42 can be replaced with an existing metal chain conveyor belt, and the cooling fan 43 can be changed to be located on the side of the metal chain conveyor belt, with lateral airflow to cool the shaft material 90.

[0043] In a non-preferred embodiment, the storage rack 400, storage box 41, conveyor belt 42, and cooling fan 43 can be omitted.

Claims

1. A forming device for anti-slip limiting points of the hinge shaft of a damper baffle, characterized in that: The device includes a molding die, a heat softening module, and a chuck arranged sequentially from front to back. The heat softening module is a cylindrical shape with a front-to-back axial direction, through which the rear part of the first section of the metal shaft passes. The heat softening module softens the rear part of the first section of the metal shaft. The chuck clamps the first clamped part of the metal shaft and transports the metal shaft forward to the molding chamber of the molding die. A molding driver drives the pressure head of the molding die to extend into the molding chamber and laterally squeeze the rear part of the first section of the metal shaft, causing it to deform locally and bulge vertically to form anti-slip limiting points. A shaft cutting module cuts the first section of the metal shaft from the metal shaft body to serve as the hinge shaft of the damper baffle. A shaft shifting seat is provided, on which the heat softening module and the chuck are mounted. The shaft shifting seat moves the chuck backward to align with the second clamped part of the metal shaft, and simultaneously moves the heat softening module backward to align with the rear part of the second section of the metal shaft.

2. The molding equipment according to claim 1, characterized in that: The heat softening module is a C-shaped cylinder with its opening facing downwards. The shaft shifter is equipped with a lifting and avoidance module to drive the heat softening module upwards and away from the heat softened metal shaft to avoid the forming mold.

3. The molding equipment according to claim 1, characterized in that: The molding die includes a first molding template and a second molding template arranged horizontally side by side. The two molding templates close together to form a molding chamber. The molding driver drives the first molding template to move towards the second molding template until the two molding templates close together. Then, the two molding templates together hold the rear part of the first section of the metal shaft, and the first molding template is blocked by the second molding template and cannot continue to move towards the second molding template. After the two molding templates close together, the molding driver drives the pressure head to extend into the molding chamber of the molding die and laterally squeeze the metal shaft.

4. The molding equipment according to claim 3, characterized in that: The forming mold includes a positioning template located behind the forming template. The positioning template has a through hole for the metal shaft to pass through and extend into the forming chamber. A top block is provided on the side of the second forming template away from the first forming template to abut against the second forming template. A top block is provided to drive the top block. The shaft cutting module mainly consists of the forming mold, the top block removal driver, and the forming driver. After the pressure head extends into the forming chamber, the top block is driven by the top block to remove the abutment against the second forming template, and the forming driver drives the first forming template to continue to approach the second forming template. Then, the two forming templates together drive the first section of the metal shaft to move laterally relative to the metal shaft body until the first section of the metal shaft is cut off from the metal shaft body.

5. The molding equipment according to claim 3, characterized in that: An extrusion template is provided on the outside of the first forming template. The first forming template has a pressure head storage groove. An extrusion column extends from the extrusion template toward the first forming template and extends into the pressure head storage groove. A spring is sandwiched between the extrusion template and the first forming template. The forming driver drives the extrusion template. The extrusion template is driven to move the first forming template closer to the second forming template and close it. The extrusion template continues to move closer to the second forming template against the spring force, and the extrusion column extends out of the pressure head storage groove and acts as a pressure head, extending into the forming chamber to laterally extrude the metal shaft.

6. The molding equipment according to claim 1, characterized in that: A conveyor belt and a storage box are provided in front of the molding die. The storage box has a J-shaped storage cavity with upper and lower openings. A sealing plate is hinged at the upper opening. The conveyor belt receives the formed damper hinge shaft and sends it to the upper opening of the storage box. The damper hinge shaft then presses down on the sealing plate, causing the sealing plate to rotate downwards and open the upper opening. With the upper opening open, the damper hinge shaft naturally falls into the storage cavity. A return torsion spring is provided at the sealing plate. When the damper hinge shaft falls into the storage cavity and no longer presses down on the sealing plate, the return torsion spring causes the sealing plate to reset and close the upper opening. The lower opening faces upwards and connects to the outside, serving as a material retrieval port for a person to reach into the storage cavity and retrieve the damper hinge shaft that has fallen into the storage cavity.

7. The molding equipment according to claim 6, characterized in that: The conveyor belt is a metal mesh conveyor belt, and an upward-blowing cooling fan is installed below the conveyor belt. The airflow generated by the cooling fan passes through the conveyor belt and then flows through the hinged shaft of the damper to dissipate heat.

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