Equipment for manufacturing injection hook from PVC (polyvinyl chloride) raw material and manufacturing method of equipment

Abstract

The invention relates to the technical field of injection hook forming equipment, in particular to equipment for manufacturing an injection hook from PVC raw materials and a manufacturing method thereof.According to the technical scheme, the equipment comprises a forming mechanism, a shaping roller is arranged in the forming mechanism, and a double-roller mechanism is installed on the forming mechanism; the double-roller mechanism is used for forming materials through a shaping roller under constant pressure; a multi-station replacing mechanism is mounted on the forming mechanism and is used for quickly replacing shaping rollers with different sizes; a space adjusting mechanism is mounted on the forming mechanism and is used for adjusting the space between the double-roller mechanism and the shaping roller; and a transmission mechanism is mounted on the forming mechanism, and is matched with the spacing adjusting mechanism to synchronize the rotating speeds of the double-roller mechanism and the shaping rollers. The problems that according to existing equipment, the replacement efficiency of shaping rollers is low, and the distance between the rollers is not accurately adjusted are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection hook molding equipment, in particular to an injection hook equipment made of PVC raw materials and a manufacturing method thereof. Background Art

[0002] As an important functional component, injection hooks are widely used in PVC products such as Velcro, fasteners, and connectors. Currently, equipment for producing injection hooks from PVC raw materials typically uses a mechanical structure that combines a shaping roller and a pressure roller. Specifically, the hot-melt PVC sheet is squeezed between the shaping roller and two pressure rollers, and the toothed structure on the shaping roller surface forms the injection hook.

[0003] However, in order to adapt to the production needs of different specifications of injection-molded hooks, the shaping rollers with specific tooth structures need to be frequently replaced. However, the installation and positioning of the shaping rollers of existing equipment rely on manual measurement and bolt tightening, which is not only time-consuming and labor-intensive, but also prone to positioning errors that lead to a decrease in molding accuracy, resulting in excessive equipment downtime and significantly reduced production efficiency.

[0004] Therefore, a device for making an injection hook using PVC raw materials and a method for making the same are proposed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an injection hook device made of PVC raw materials and a manufacturing method thereof, which solves the problems of low efficiency in replacing shaping rollers and inaccurate adjustment of roller spacing in existing equipment.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an injection hook device made of PVC raw material, comprising a molding mechanism, wherein a shaping roller is provided in the molding mechanism, and a counter-roller mechanism is mounted on the molding mechanism, wherein the counter-roller mechanism is used to shape the material through the shaping roller under constant pressure; The forming mechanism is equipped with a multi-station replacement mechanism, which is used to adjust the specifications of the shaping roller; The forming mechanism is provided with a spacing adjustment mechanism, which is used to adjust the spacing between the roller mechanism and the shaping roller; A transmission mechanism is installed on the forming mechanism, and the transmission mechanism is used to drive the shaping roller and the roller mechanism to rotate synchronously.

[0007] Preferably, the forming mechanism includes a stand, which is symmetrically distributed on both sides of the roller mechanism and fixedly connected by a connecting rod. The stand is provided with a guide groove for guiding the movement of the roller mechanism. The stand is provided with a transfer shaft, which is used to install the shaping roller, and a plug-in slot is provided on the transfer shaft; A positioning frame is installed on the stand, and a first adapter frame and a second adapter frame are installed on the positioning frame.

[0008] Preferably, the first adapter frame is provided with an installation slide groove, and the first adapter frames at the upper and lower ends of the installation slide groove are respectively provided with first slide grooves; The second adapter frame is provided with a second slide groove, and the second slide groove and the first slide groove are used to connect the multi-station replacement mechanism.

[0009] Preferably, the multi-station replacement mechanism includes a first connecting shaft, both ends of the first connecting shaft are respectively installed in the first slide groove and the second slide groove, one end of the first connecting shaft is provided with a stepping motor, the stepping motor is used to drive the first connecting shaft to rotate according to an angle, and a motor bracket is installed on the stepping motor, and the motor bracket is slidably installed with the first adapter frame through the installation slide groove; A support frame is installed on the first connecting shaft, and a ring sleeve is installed on the support frame. The first connecting shaft is installed with a roller core through the ring sleeve on the support frame. The roller core and the support frame are rotatably installed. Connectors are provided at both ends of the roller core. A modular roller sleeve is installed on the outer side of the roller core. The modular roller sleeve is designed by splicing multiple groups of annular model pieces. The connecting piece cooperates with the insertion groove to form a key connection, which is used to form a coaxial rigid connection between the roller core and the transfer shaft.

[0010] Preferably, the spacing adjustment mechanism is installed parallel to one side of the stand, and the spacing adjustment mechanism includes a frame body, on which a second connecting shaft is installed, and the second connecting shaft is used to rotatably connect to the other end of the first connecting shaft; The first and second movable shear arms are rotatably mounted on both ends of the frame body on a side away from the second connecting axis. The first and second movable shear arms are mirror-imaged along the center of the frame body and can only swing in one direction. The second shear arm is rotatably mounted on one end of the first movable shear arm away from the frame, the third shear arm is rotatably mounted on one end of the second shear arm away from the first movable shear arm, and the third shear arm is rotatably mounted on one end of the third shear arm away from the second shear arm; The first scissor arm and the fourth scissor arm are rotatably mounted on the second scissor arm and the third scissor arm respectively. One end of the first scissor arm is rotatably connected to one end of the fourth scissor arm, and the other end of the first scissor arm and the other end of the fourth scissor arm are both connected to the roller mechanism.

[0011] Preferably, the transmission mechanism includes a mounting plate, the mounting plate is fixedly mounted on the stand, a servo motor is mounted on the mounting plate, the output shaft of the servo motor passes through the mounting plate and is provided with a driving sprocket, a first driven sprocket and a second driven sprocket are respectively provided on the mounting plates at the upper and lower ends of the driving sprocket, and the driving sprocket, the first driven sprocket and the second driven sprocket are connected by a transmission chain; A guide rail frame is installed on the mounting plate, a sliding frame is slidably installed on the guide rail frame, and a tension adjustment sprocket is provided on the sliding frame, and the tension adjustment sprocket is used to adjust the tension of the transmission chain; A connecting frame is installed on the sliding frame, and one end of the connecting frame away from the sliding frame is fixedly connected to the motor bracket.

[0012] Preferably, the pair of rollers includes a first pressure roller and a second pressure roller, both ends of the first pressure roller and the second pressure roller are respectively slidably installed in the guide groove, one end on the same side of the first pressure roller and the second pressure roller is respectively rotatably connected to the fourth shear arm and the first shear arm, and the other end on the same side of the first pressure roller and the second pressure roller is respectively rigidly connected to the first driven sprocket and the second driven sprocket.

[0013] Preferably, it also includes a horizontal adjustment mechanism, which is used to adjust the position of the multi-station replacement mechanism in the horizontal direction. The horizontal adjustment mechanism includes a mounting frame, which is fixedly connected to the vertical frame. An adjusting cylinder is fixedly installed on the mounting frame, and the piston end of the adjusting cylinder is rotatably installed with the first connecting shaft through the fixed frame.

[0014] A method for manufacturing an injection hook using PVC raw materials, wherein the shaping roller is composed of a roller core, a modular roller sleeve, and adapter shafts at both ends thereof, and three roller cores are circumferentially installed on the first connecting shaft of the multi-station replacement mechanism, specifically comprising the following steps: Step 1: Start the stepper motor to drive the first connecting shaft to rotate, so that the connecting piece and the insertion slot are on the same horizontal plane. The adjusting cylinder of the horizontal adjustment mechanism moves the first connecting shaft of the multi-station replacement mechanism in the horizontal direction, and accurately aligns the connecting pieces at both ends of the target roll core with the insertion slot of the adapter shaft on the stand, so that the connecting piece and the insertion slot form a key connection, and completes the coaxial rigid positioning of the modular roll sleeve and the adapter shaft; Step 2: Utilize the linkage structure of the frame, the first movable shear arm, the second movable shear arm, the second shear arm, the third shear arm, the first shear arm and the fourth shear arm of the spacing adjustment mechanism to drive the first pressing roller and the second pressing roller of the roller mechanism to slide longitudinally along the guide groove of the vertical frame, and accurately adjust the spacing between the roller mechanism and the shaping roller to the process setting value by swinging the shear arm; Step 3: Start the servo motor of the transmission mechanism, drive the first driven sprocket and the second driven sprocket through the active sprocket and the transmission chain, so that the adapter shaft drives the shaping roller and the first pressure roller and the second pressure roller of the roller mechanism to rotate synchronously; adjust the tension adjustment sprocket through the sliding frame on the guide frame, calibrate the tension of the transmission chain, and ensure that the speed difference between the shaping roller and the roller mechanism is controlled within the process allowable range; The operations of step 1, step 2 and step 3 are synchronized and linked by the horizontal displacement of the multi-station replacement mechanism, without the need for independent step-by-step control; Step 4: The PVC sheet heated to a molten state is conveyed to the forming mechanism, and the sheet is passed between the modular roller sleeve tooth structure of the shaping roller and the first and second pressing rollers of the counter-roller mechanism. Under the action of constant pressure, the tooth profile of the modular roller sleeve is used to squeeze and complete the one-step forming of the injection hook; Step 5. When it is necessary to switch the specifications of the injection hook, the cylinder is adjusted to disengage the key connection between the connector of the current working roll core and the insertion slot of the adapter shaft, and the stepper motor is started to drive the first connecting shaft of the multi-station replacement mechanism to rotate 120°, so that the station is rotated to the standby position; at the same time, the adjacent roll core stations to which the pre-installed modular roll sleeves of different specifications belong are turned to the working position, and the key connection between the connector and the insertion slot is re-realized through the horizontal adjustment mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges a multi-station replacement mechanism on the forming mechanism. The multi-station replacement mechanism can realize the station rotation and precise docking of the shaping roller through mechanical transmission, replacing the traditional roller changing method of manual measurement and bolt tightening, shortening the roller changing time from tens of minutes to several minutes, significantly improving production efficiency, and avoiding positioning errors caused by manual operation, solving the problem that replacing the shaping roller is time-consuming, labor-intensive and lacks precision.

[0016] The present invention realizes dynamic adjustment of the distance between the roller mechanism and the shaping roller through the distance adjustment mechanism on the forming mechanism. The distance adjustment mechanism drives the roller mechanism to slide along the preset track through the mechanical linkage structure, and can accurately adjust the distance according to the process requirements, ensuring that the hot-melt PVC sheet passes through the forming area under constant pressure, avoiding the deviation of the injection hook size caused by distance fluctuation, and solving the technical bottleneck of unstable pressure control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 The horizontal adjustment mechanism of the present invention; Figure 4 It is a structural schematic diagram of the multi-station replacement mechanism of the present invention; Figure 5 A schematic diagram of the support frame and connection structure of the present invention; Figure 6 Schematic diagram of the spacing adjustment mechanism structure of the present invention; Figure 7 It is a schematic diagram of the connection structure between the forming mechanism and the roller mechanism of the present invention; Figure 8 It is a schematic diagram of the transmission mechanism structure of the present invention.

[0018] In the figure: 1. Horizontal adjustment mechanism; 11. Mounting frame; 12. Adjusting cylinder; 121. Fixed frame; 2. Multi-station replacement mechanism; 21. First connecting shaft; 22. Support frame; 23. Roller core; 231. Modular roller sleeve; 232. Connector; 24. Stepper motor; 241. Motor bracket; 25. Ring sleeve; 3. Spacing adjustment mechanism; 31. Frame; 311. First movable shear arm; 312. Second movable shear arm; 313. Second connecting shaft; 32. First shear arm; 33. Second shear arm; 34. Third shear arm; 35. Fourth shear arm; 4. Forming mechanism; 41. Vertical Frame; 411, guide groove; 42, connecting rod; 43, transfer shaft; 431, insertion groove; 44, positioning frame; 45, first transfer frame; 451, mounting slide; 452, first slide; 46, second transfer frame; 461, second slide; 5, transmission mechanism; 51, connecting frame; 52, mounting plate; 53, servo motor; 531, driving sprocket; 54, first driven sprocket; 55, sliding frame; 551, tensioning and adjusting sprocket; 56, guide frame; 57, transmission chain; 58, second driven sprocket; 6, roller mechanism; 61, first pressure roller; 62, second pressure roller. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Figures 1 to 8 As shown, an embodiment of the present invention provides: an injection hook device made of PVC raw materials, including a forming mechanism 4, a shaping roller is provided in the forming mechanism 4, and a counter-roller mechanism 6 is installed on the forming mechanism 4, and the counter-roller mechanism 6 is used to form the material through the shaping roller under constant pressure; The forming mechanism 4 is equipped with a multi-station replacement mechanism 2, which is used to quickly replace shaping rollers of different sizes; The forming mechanism 4 is provided with a spacing adjustment mechanism 3, which is used to adjust the spacing between the roller mechanism 6 and the shaping roller; A transmission mechanism 5 is installed on the forming mechanism 4, and the transmission mechanism 5 is used to drive the shaping roller and the roller mechanism 6 to rotate synchronously.

[0021] Specifically, by setting up a multi-station replacement mechanism on the forming mechanism, the multi-station replacement mechanism can realize the station rotation and precise docking of the shaping roller through mechanical transmission, replacing the traditional manual measurement and bolt tightening roller changing method, shortening the roller changing time from tens of minutes to several minutes, significantly improving production efficiency, and avoiding positioning errors caused by manual operation, solving the problem of time-consuming, labor-intensive and insufficient precision in replacing the shaping roller.

[0022] The present invention realizes dynamic adjustment of the distance between the roller mechanism and the shaping roller through the distance adjustment mechanism on the forming mechanism. The distance adjustment mechanism drives the roller mechanism to slide along the preset track through the mechanical linkage structure, and can accurately adjust the distance according to the process requirements, ensuring that the hot-melt PVC sheet passes through the forming area under constant pressure, avoiding the deviation of the injection hook size caused by distance fluctuation, and solving the technical bottleneck of unstable pressure control.

[0023] Example 2: In order to quickly replace shaping rollers of different sizes, Figure 4 、 Figure 5 and Figure 7 As shown, in this embodiment, the shaping mechanism 4 includes vertical frames 41 symmetrically distributed on both sides of the roller mechanism 6. The vertical frames 41 on both sides are fixedly connected by a connecting rod 42. A guide groove 411 is provided on the vertical frame 41 for guiding the movement of the roller mechanism 6, and a transfer shaft 43 with an insertion groove 431 is installed to fix the shaping roller. The first adapter frame 45 on the positioning frame 44 is provided with a mounting slot 451 and first slots 452 at its upper and lower ends. The second slot 461 on the second adapter frame 46 cooperates with the first slot 452 to form a mounting guide rail for the multi-station replacement mechanism 2. The first connecting shaft 21 of the multi-station replacement mechanism 2 is mounted at both ends in the first slide groove 452 and the second slide groove 461 , and one end is driven to rotate by the stepper motor 24 . The stepper motor 24 is slidably mounted on the first adapter frame 45 through the motor bracket 241 and the mounting slide groove 451 . The first connecting shaft 21 carries a roller core 23 via a support frame 22 and a ring sleeve 25. A modular roller sleeve 231 is sleeved on the outer side of the roller core 23. The modular roller sleeve 231 is made up of multiple sets of annular model pieces. Connectors 232 are provided at both ends of the roller core 23. The connectors 232 are used to connect with the insertion slots 431 on the adapter shaft 43, thereby achieving coaxial rigid positioning. An adjusting cylinder 12 is installed on the horizontal adjustment mechanism 1 through a mounting frame 11, and a displacement sensor is installed on the piston end or cylinder body of the adjusting cylinder 12. The displacement sensor is used to detect the horizontal displacement of the multi-station replacement mechanism 2 in real time, and generate a displacement signal to feed back to the control system; the control system is electrically connected to the spacing adjustment mechanism 3 and the transmission mechanism 5, and is used to synchronously adjust the spacing of the roller mechanism 6 and the rotation speed of the shaping roller and the roller mechanism 6 according to the displacement signal; a fixing frame 121 is installed on the piston end of the adjusting cylinder 12, and the first connecting shaft 21 is pushed to move horizontally through the fixing frame 121 to coaxially rigidly position the roller core 23 and the modular roller sleeve 231 mounted on the outside of the roller core 23 with the adapter shaft 43.

[0024] The displacement sensor uses a magnetostrictive displacement sensor, model MTSR series, with a measuring range of 0-150mm and an accuracy of ±0.05mm. It communicates with the Siemens S7-300 PLC through the RS485 interface and transmits displacement data to the control system in real time to ensure the coordinated accuracy of multi-station replacement, spacing adjustment and transmission synchronization.

[0025] Example 3: In order to achieve precise adjustment of the distance between the roller and the shaping roller, as shown in FIG. Figure 6 and Figure 7 As shown, in this embodiment, the spacing adjustment mechanism 3 is installed in parallel with the stand 41, and the frame 31 is rotatably connected to the first connecting shaft 21 via the second connecting shaft 313. The first movable shear arm 311 and the second movable shear arm 312 on both sides of the frame 31 are mirror-imaged and swing unidirectionally. The first shear arm 32 and the fourth shear arm 35 are linked by the second shear arm 33 and the third shear arm 34, thereby driving the first pressing roller 61 and the second pressing roller 62 of the roller mechanism 6 to slide vertically along the direction of the guide groove 411, thereby realizing precise adjustment of the spacing between the roller mechanism 6 and the shaping roller; The two ends of the first pressing roller 61 and the second pressing roller 62 of the roller mechanism 6 are slidingly connected to the guide groove 411 and are connected to the spacing adjustment mechanism 3 to ensure that constant pressure can be applied during extrusion molding to avoid product size deviation caused by spacing fluctuation.

[0026] Example 4: In order to achieve synchronous rotation speed of the roller mechanism and the shaping roller, as shown in FIG. Figure 7 and Figure 8 As shown, in this embodiment, the mounting plate 52 of the transmission mechanism 5 is fixed to the stand 41, and the servo motor 53 drives the first driven sprocket 54 and the second driven sprocket 58 through the driving sprocket 531 and the transmission chain 57, and the other ends of the first pressing roller 61 and the second pressing roller 62 on the same side are rigidly connected to the first driven sprocket 54 and the second driven sprocket 58 respectively, so that the speed synchronization of the adapter shaft 43 on the shaping roller and the roller mechanism 6 is achieved; The sliding frame 55 on the guide rail frame 56 carries a tension adjustment sprocket 551, which is fixedly connected to the motor bracket 241 of the multi-station replacement mechanism 2 through the connecting frame 51. The chain tension is adjusted and calibrated with the horizontal movement of the multi-station replacement mechanism 2, so that the speed difference is controlled within the process allowable range. The transmission mechanism 5 is linked with the spacing adjustment mechanism 3 to ensure that when the hot-melt PVC sheet passes through the forming area, the shaping roller and the roller mechanism 6 run at a precisely synchronized speed, avoiding uneven stretching or extrusion caused by speed deviation, and ensuring the consistency of the injection hook forming quality.

[0027] Example five: Figures 1 to 8 As shown, another embodiment of the present invention provides a method for manufacturing an injection hook using PVC raw materials, wherein the shaping roller is composed of a roller core 23, a modular roller sleeve 231 and a transfer shaft 43 located at both ends thereof, and three roller cores 23 are circumferentially installed on the first connecting shaft 21 of the multi-station replacement mechanism 2, specifically comprising the following steps: Step 1: Start the stepper motor 24 to drive the first connecting shaft 21 to rotate, so that the connecting piece 232 and the insertion slot 431 are in the same horizontal plane, and the adjusting cylinder 12 of the horizontal adjustment mechanism 1 is used to move the first connecting shaft 21 of the multi-station replacement mechanism 2 in the horizontal direction, and accurately align the connecting pieces 232 at both ends of the target roller core 23 with the insertion slot 431 of the adapter shaft 43 on the stand 41, so that the connecting piece 232 and the insertion slot 431 form a key connection, and complete the coaxial rigid positioning of the modular roller sleeve 231 and the adapter shaft 43; Step 2: Utilize the linkage structure of the frame 31, the first movable shear arm 311, the second movable shear arm 312, the second shear arm 33, the third shear arm 34, the first shear arm 32, and the fourth shear arm 35 of the spacing adjustment mechanism 3 to drive the first pressing roller 61 and the second pressing roller 62 of the roller mechanism 6 to slide longitudinally along the guide groove 411 of the stand 41, and accurately adjust the spacing between the roller mechanism 6 and the shaping roller to the process set value by swinging the shear arms; Step 3: Start the servo motor 53 of the transmission mechanism 5, and drive the first driven sprocket 54 and the second driven sprocket 58 through the driving sprocket 531 and the transmission chain 57, so that the adapter shaft 43 drives the shaping roller and the first pressing roller 61 and the second pressing roller 62 of the roller-counter mechanism 6 to rotate synchronously; adjust the tension adjustment sprocket 551 through the sliding frame 55 on the guide rail frame 56, calibrate the tension of the transmission chain 57, and ensure that the speed difference between the shaping roller and the roller-counter mechanism 6 is controlled within the process allowable range; The operations of step 1, step 2 and step 3 are synchronized and linked by the horizontal displacement of the multi-station replacement mechanism 2, without the need for independent step-by-step control; The horizontal displacement of the multi-station replacement mechanism 2 is driven by the regulating cylinder 12 of the horizontal adjustment mechanism 1. A displacement sensor is installed on the piston end or cylinder body of the regulating cylinder 12 to collect the precise position data of the horizontal displacement in real time and generate a displacement signal. The displacement signal is fed back to the control system of the spacing adjustment mechanism 3 and the transmission mechanism 5, such as a PLC or an industrial computer, through a signal transmission line or a wireless transmission module. Through the preset program logic, the shear arm linkage structure of the spacing adjustment mechanism 3 adjusts the spacing of the roller mechanism 6 in real time according to the displacement signal. At the same time, the servo motor 53 of the transmission mechanism 5 synchronously calibrates the speed according to the displacement signal to ensure that the three automatically match the working status during the horizontal displacement process of the multi-station replacement mechanism 2, so as to realize the synchronous linkage of step one, step two and step three operations without the need for independent step-by-step control.

[0028] Step 4: The PVC sheet heated to a molten state is conveyed to the forming mechanism 4, where the sheet passes between the toothed structure of the modular roller sleeve 231 of the shaping roller and the first and second pressing rollers 61 and 62 of the counter-roller mechanism 6. Under constant pressure, the toothed structure of the modular roller sleeve 231 is used to squeeze the sheet into the primary molding of the injection hook. Step 5. When it is necessary to switch the specifications of the injection hook, the connecting piece 232 of the current working roller core 23 is disengaged from the key connection with the insertion slot 431 of the adapter shaft 43 by adjusting the cylinder 12, and the stepper motor 24 is started to drive the first connecting shaft 21 of the multi-station replacement mechanism 2 to rotate 120°, so that the station is rotated to the standby position; at the same time, the adjacent roller core 23 station to which the pre-installed modular roller sleeves 231 of different specifications belong is turned to the working position, and then the key connection between the connecting piece 232 and the insertion slot 431 is re-realized through the horizontal adjustment mechanism 1.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An injection hook device made of PVC raw material, comprising a forming mechanism (4), wherein a shaping roller is provided in the forming mechanism (4), and a counter-roller mechanism (6) is installed on the forming mechanism (4), wherein the counter-roller mechanism (6) is used to shape the material through the shaping roller under a constant pressure, and is characterized in that: The forming mechanism (4) is equipped with a multi-station replacement mechanism (2), and the multi-station replacement mechanism (2) is used to adjust the specifications of the shaping roller; The shaping mechanism (4) is provided with a spacing adjustment mechanism (3), and the spacing adjustment mechanism (3) is used to adjust the spacing between the counter-roller mechanism (6) and the shaping roller; A transmission mechanism (5) is installed on the shaping mechanism (4), and the transmission mechanism (5) is used to drive the shaping roller and the counter-roller mechanism (6) to rotate synchronously.

2. The device for producing an injection hook using PVC raw materials according to claim 1, characterized in that: The forming mechanism (4) includes a stand (41), which is symmetrically distributed on both sides of the roller mechanism (6) and fixedly connected via a connecting rod (42). A guide groove (411) is provided on the stand (41), and the guide groove (411) is used to guide the movement of the roller mechanism (6); A transfer shaft (43) is mounted on the stand (41), and the transfer shaft (43) is used to mount a shaping roller, and an insertion slot (431) is provided on the transfer shaft (43); A positioning frame (44) is mounted on the vertical frame (41), and a first adapter frame (45) and a second adapter frame (46) are mounted on the positioning frame (44).

3. The device for producing an injection hook using PVC raw materials according to claim 2, characterized in that: The first adapter frame (45) is provided with a mounting slot (451), and first slots (452) are respectively provided on the first adapter frame (45) at the upper and lower ends of the mounting slot (451); A second sliding groove (461) is provided on the second adapter frame (46), and the second sliding groove (461) and the first sliding groove (452) are used in conjunction with each other to connect the multi-station replacement mechanism (2).

4. The device for producing an injection hook using PVC raw materials according to claim 1, characterized in that: The multi-station replacement mechanism (2) includes a first connecting shaft (21), two ends of the first connecting shaft (21) are respectively installed in a first slide groove (452) and a second slide groove (461), one end of the first connecting shaft (21) is provided with a stepping motor (24), the stepping motor (24) is used to drive the first connecting shaft (21) to rotate according to an angle, a motor bracket (241) is installed on the stepping motor (24), and the motor bracket (241) is slidably installed with the first adapter frame (45) through the installation slide groove (451); A support frame (22) is mounted on the first connecting shaft (21), a ring sleeve (25) is mounted on the support frame (22), a roller core (23) is mounted on the first connecting shaft (21) through the ring sleeve (25) on the support frame (22), the roller core (23) and the support frame (22) are rotatably mounted, connecting pieces (232) are provided at both ends of the roller core (23), a modular roller sleeve (231) is mounted on the outside of the roller core (23), and the modular roller sleeve (231) is designed by splicing a plurality of groups of annular model pieces; The connecting member (232) cooperates with the insertion slot (431) to form a key connection, which is used to form a coaxial rigid connection between the roller core (23) and the adapter shaft (43).

5. The device for producing an injection hook using PVC raw materials according to claim 1, characterized in that: The spacing adjustment mechanism (3) is installed parallel to one side of the stand (41), and the spacing adjustment mechanism (3) includes a frame body (31), and a second connecting shaft (313) is installed on the frame body (31), and the second connecting shaft (313) is used to rotatably connect to the other end of the first connecting shaft (21); A first movable shear arm (311) and a second movable shear arm (312) are rotatably mounted on both ends of the frame (31) on a side away from the second connecting shaft (313). The first movable shear arm (311) and the second movable shear arm (312) are mirror-imaged along the center of the frame (31) and can only swing in one direction. The second shear arm (33) is rotatably mounted on one end of the first movable shear arm (311) away from the frame (31), the third shear arm (34) is rotatably mounted on one end of the second shear arm (33) away from the first movable shear arm (311), and the second movable shear arm (312) is rotatably mounted on one end of the third shear arm (34) away from the second shear arm (33); The first scissor arm (32) and the fourth scissor arm (35) are rotatably mounted on the second scissor arm (33) and the third scissor arm (34), respectively. One end of the first scissor arm (32) and one end of the fourth scissor arm (35) are rotatably connected, and the other end of the first scissor arm (32) and the other end of the fourth scissor arm (35) are both connected to the roller mechanism (6).

6. The device for producing an injection hook using PVC raw materials according to claim 1, characterized in that: The transmission mechanism (5) includes a mounting plate (52), the mounting plate (52) being fixedly mounted on the stand (41), a servo motor (53) being mounted on the mounting plate (52), an output shaft of the servo motor (53) passing through the mounting plate (52) and provided with a driving sprocket (531), a first driven sprocket (54) and a second driven sprocket (58) being respectively provided on the mounting plate (52) at the upper and lower ends of the driving sprocket (531), and the driving sprocket (531), the first driven sprocket (54) and the second driven sprocket (58) being connected in transmission via a transmission chain (57); A guide rail frame (56) is mounted on the mounting plate (52), a sliding frame (55) is slidably mounted on the guide rail frame (56), and a tension adjustment sprocket (551) is provided on the sliding frame (55), and the tension adjustment sprocket (551) is used to adjust the tension of the transmission chain (57); A connecting frame (51) is mounted on the sliding frame (55), and one end of the connecting frame (51) facing away from the sliding frame (55) is fixedly connected to the motor bracket (241).

7. The device for producing an injection hook using PVC raw materials according to claim 1, characterized in that: The roller mechanism (6) comprises a first pressing roller (61) and a second pressing roller (62), both ends of the first pressing roller (61) and the second pressing roller (62) are respectively slidably mounted in the guide groove (411), one end on the same side of the first pressing roller (61) and the second pressing roller (62) is rotatably connected to the fourth shear arm (35) and the first shear arm (32), respectively, and the other end on the same side of the first pressing roller (61) and the second pressing roller (62) is rigidly connected to the first driven sprocket (54) and the second driven sprocket (58), respectively.

8. The device for producing an injection hook using PVC raw materials according to claim 1, characterized in that: The apparatus further comprises a horizontal adjustment mechanism (1), wherein the horizontal adjustment mechanism (1) is used to adjust the position of the multi-station replacement mechanism (2) in the horizontal direction, and the horizontal adjustment mechanism (1) comprises a mounting frame (11), wherein the mounting frame (11) is fixedly connected to the vertical frame (41), and an adjustment cylinder (12) is fixedly mounted on the mounting frame (11), and a piston end of the adjustment cylinder (12) is rotatably mounted on the first connecting shaft (21) via a fixing frame (121).

9. A method for making an injection hook using PVC raw materials, characterized in that: The manufacturing method is based on the injection hook device made of PVC raw materials as described in any one of claims 1 to 8, wherein the shaping roller is composed of a roller core (23), a modular roller sleeve (231) and a transfer shaft (43) located at both ends thereof, and the first connecting shaft (21) of the multi-station replacement mechanism (2) is circumferentially mounted with three roller cores (23), and specifically comprises the following steps: Step 1: Start the stepper motor (24) to drive the first connecting shaft (21) to rotate, so that the connecting piece (232) and the insertion slot (431) are in the same horizontal plane, and the adjusting cylinder (12) of the horizontal adjustment mechanism (1) moves the first connecting shaft (21) of the multi-station replacement mechanism (2) in the horizontal direction, and accurately aligns the connecting pieces (232) at both ends of the target roller core (23) with the insertion slot (431) of the transfer shaft (43) on the stand (41), so that the connecting piece (232) and the insertion slot (431) form a key connection, and completes the coaxial rigid positioning of the modular roller sleeve (231) and the transfer shaft (43); Step 2: Using the linkage structure of the frame (31), the first movable shear arm (311), the second movable shear arm (312), the second shear arm (33), the third shear arm (34), the first shear arm (32) and the fourth shear arm (35) of the spacing adjustment mechanism (3), the first pressing roller (61) and the second pressing roller (62) of the roller mechanism (6) are driven to slide longitudinally along the guide groove (411) of the stand (41), and the spacing between the roller mechanism (6) and the shaping roller is precisely adjusted to the process setting value by swinging the shear arms; Step 3: Start the servo motor (53) of the transmission mechanism (5), and drive the first driven sprocket (54) and the second driven sprocket (58) through the driving sprocket (531) and the transmission chain (57), so that the adapter shaft (43) drives the shaping roller and the first pressure roller (61) and the second pressure roller (62) of the roller mechanism (6) to rotate synchronously; adjust the tension adjustment sprocket (551) through the sliding frame (55) on the guide frame (56), calibrate the tension of the transmission chain (57), and ensure that the speed difference between the shaping roller and the roller mechanism (6) is controlled within the process allowable range; The operations of step 1, step 2 and step 3 are synchronized and linked by the horizontal displacement of the multi-station replacement mechanism (2); Step 4: The PVC sheet heated to a molten state is conveyed to the forming mechanism (4), and the sheet is passed between the toothed structure of the modular roller sleeve (231) of the shaping roller and the first pressing roller (61) and the second pressing roller (62) of the counter-roller mechanism (6). Under the action of constant pressure, the toothed structure of the modular roller sleeve (231) is used to squeeze the sheet to complete the primary forming of the injection hook; Step 5. When it is necessary to switch the specifications of the injection hook, the connecting piece (232) of the current working roller core (23) is disconnected from the key connection with the insertion slot (431) of the transfer shaft (43) by adjusting the cylinder (12), and the stepper motor (24) is started to drive the first connecting shaft (21) of the multi-station replacement mechanism (2) to rotate 120 degrees, so that the station is rotated to the standby position; at the same time, the adjacent roller core (23) station to which the pre-installed modular roller sleeves (231) of different specifications belong is transferred to the working position, and then the key connection between the connecting piece (232) and the insertion slot (431) is re-realized through the horizontal adjustment mechanism (1).

Images