A finished product conveyor line for injection molding machines

Abstract

The present invention relates to the field of material conveying technology, specifically to a finished product conveyor line for an injection molding machine, comprising a plurality of rollers rotatably mounted on the base frame, the plurality of rollers forming a conveying path with a bent angle on the base frame, a conveyor belt wound around the plurality of rollers, a driving assembly for driving the plurality of rollers to rotate provided on the base frame, an outer baffle and an inner baffle coaxially arranged on the base frame, the outer baffle and the inner baffle being respectively arranged on both sides of the conveyor belt. The present invention provides a driving assembly on the conveyor belt, utilizes the driving force of the conveyor belt to drive the synchronous crawler transmission on the inner and outer baffles, and gives the main power to the oblong workpiece away from the inner and outer baffles. The workpiece stably passes through the corner conveyor line in the form of dynamic swinging, avoiding damage to the workpiece caused by rigid friction collision between the workpiece and the inner or outer baffle, thereby improving the stability of the conveyor line in conveying finished injection molded parts and reducing the probability of defective and defective products.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying, in particular to a finished product conveying line for an injection molding machine. Background Art

[0002] The conveyor line is a modern automated production equipment that transports finished or semi-finished products from one production process to the next. It is usually composed of conveyor belts, conveyor wheels, electronic control equipment, etc. In the production line of injection molded parts, the finished products of the injection molding machine need to be processed multiple times after demolding. The conveyor line can connect the two production processes. It is an indispensable automated production equipment and improves the efficiency of automated production.

[0003] However, there are some small processing plants with relatively small production capacity. Due to limited space, they cannot place large conveyor lines. In order to ensure the smoothness of the production steps, the conveyor lines need to be set up as conveyor lines that require multiple turns. Generally, baffles are provided on both sides of the conveyor belt to prevent items from falling off the conveyor belt. When the existing conveyor belt is transporting long and thin workpieces whose processing length is greater than the width of the conveyor belt, in order to prevent the workpieces from colliding or rubbing with the baffles on both sides and causing damage to the workpieces, the baffles on both sides of the conveyor belt can be removed to facilitate the workpieces to pass through the turns safely. However, this existing practice requires reducing the overall transportation speed of the conveyor belt to avoid the workpieces from falling off the conveyor belt due to centrifugal force due to excessive speed, thereby reducing the overall transportation efficiency of the conveyor belt; direct rigid impact and friction between the workpieces and the baffles on both sides cannot be avoided, and the speed of the conveyor belt needs to be limited. The workpieces are frequently damaged due to impact and friction and become defective or defective products. The transportation efficiency cannot be guaranteed, and the yield rate of the injection molded parts produced by the conveyor line is also reduced.

[0004] To this end, a finished product conveyor line for an injection molding machine is proposed to solve the problem that the conveyor belt's transportation speed is reduced under the premise that the long and flat workpiece passes safely through the conveyor belt's bend, thereby reducing the efficiency of the finished injection molding parts produced by the conveyor line. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: when the existing conveyor belt transports long and flat workpieces through the conveyor belt bend, in order to ensure the yield rate and safety, the conveyor belt's transportation speed needs to be reduced, which leads to a decrease in the efficiency of the finished injection molded parts produced by the conveyor line, and also affects the problem of too low yield rate during transportation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: the present invention provides a finished product conveying line of an injection molding machine, comprising a frame, rollers, a conveyor belt, an outer baffle, an inner baffle, a feed port and a discharge port; a plurality of rollers are rotatably mounted on the top of the frame, a conveyor belt is slidably mounted on the side of the roller, the outer baffle and the inner baffle are coaxially fixedly mounted on the top of the base frame, a plurality of rollers are rotatably mounted on the frame, a plurality of the rollers form a conveying path with a bending angle on the frame, a conveyor belt is commonly wound around the plurality of the rollers, a driving unit for driving the plurality of rollers to rotate is provided on the frame, an outer baffle and an inner baffle arranged coaxially are provided on the frame, the outer baffle The plate and the inner baffle are respectively arranged on both sides of the conveyor belt, and the two sides of the conveyor belt are the feed port and the discharge port respectively; preferably, a guide plate is provided on the side of the outer baffle close to the feed port, and the guide plate is inclined 30°-45° toward the side of the inner baffle. The workpiece enters the turning through the feed port, and is driven by the synchronous crawler transmission on both sides to drive the workpiece out of the discharge port. The guide rod is arranged to be inclined 30°-45° toward the side of the inner baffle, so that the workpiece can enter the turning with an inclined posture of 30°-45°. Because the synchronous crawlers on both sides have the same linear speed as the conveyor belt, and maintain the same posture when detaching from the discharge port, it is convenient for multiple workpieces to pass through, and pile-up problems are not likely to occur, thereby improving the stability of transmission.

[0007] It also includes a driving assembly and a tensioning assembly. The driving assembly, which is internally provided with a guide wheel and a synchronous crawler, is fixedly installed under the inner and outer baffles; the driving force of the conveyor belt drives the guide wheel and the synchronous crawler to rotate, and the synchronous crawler gives the workpiece power toward the center of the conveyor belt, so that the workpiece passes through the corner conveyor line stably in the form of dynamic swing; the tensioning assembly drives the synchronous crawler to continuously tighten through the elastic force of the elastic part, and the tensioning assembly continuously buffers the movement of the workpiece, so that the workpiece always maintains a certain gap with the inner and outer baffles during the transportation process.

[0008] The driving assembly also includes a fixed rod, a ball, a rotating gear disc, a telescopic rod and a base; the fixed rod is fixedly mounted on the lower ends of the inner baffle and the outer baffle, the ball is rotatably mounted on the fixed lower end, the ball and the upper side of the conveyor belt are interference fit, a guide wheel is rotatably mounted above the fixed rod, the rotating gear disc is fixedly mounted below the guide wheel, the outer surface of the guide wheel is rotatably mounted with the synchronous crawler, the area of ​​the guide wheel covered by the synchronous crawler is s, and the side area of ​​the guide wheel is S, which is numerically twice that of s, so as to ensure the continuity of rotation; the telescopic rod is clamped in the middle of the rotating gear disc, and the lower end of the telescopic rod is clamped to the base.

[0009] The outer surface of the guide wheel is provided with a circumferential array of clamping grooves, and the inner vertical linear array of the clamping grooves is provided with rectangular protrusions; 6-10 latching teeth are fixedly installed around the rotating gear disc. If there are less than 6 latching teeth, the sense of frustration during rotation will be strong. If there are more than 10 latching teeth, the space between the latching teeth is small and cannot accommodate the clamping of the telescopic rod. The cross-sectional shape of the latching teeth is an isosceles trapezoid; the lower ends of the outer baffle and the inner baffle are both provided with multiple fixing rods, each of which is provided with a guide wheel for assisting the long workpiece to stably pass through the turning conveyor line, and each guide wheel is provided with multiple Grooves, multiple guide wheels are all covered with synchronous crawlers, and multiple belt teeth on the synchronous crawlers are engaged with the grooves. When the conveyor belt is transporting workpieces, it only needs to be able to fully carry the workpieces. However, when some long and thin workpieces are placed perpendicular to the conveyor belt, they will collide with the racks on both sides of the conveyor belt, that is, the length is greater than the width of the conveyor belt. When such workpieces pass through the conveyor belt that needs to turn, such as 90 degrees, they are prone to collision and friction with the baffles on both sides of the conveyor belt at the turning point, causing the workpiece to be easily damaged and become defective or defective, especially for injection molding. For plastic parts, it is even worse. The circumferential edge of each guide wheel exceeds the circumferential edge of the guide wheel by 1-2 cm. When the long and flat workpiece enters the bend, because the length of the workpiece is greater than the width of the conveyor belt, it will first contact the guide wheel and the synchronous crawler. The synchronous crawler is generally made of rubber material and has a certain buffering capacity. When the workpiece contacts it, there will be no rigid friction, reducing the wear of the workpiece; the outer baffle and the inner baffle are both provided with a tensioning component that continuously tightens the synchronous crawler. The synchronous crawler will experience tensile fatigue during long-term use, which is prone to synchronous crawler stretching. In the case of a long track and the synchronous crawler is in a vertical state relative to the ground, the teeth of the synchronous crawler may be out of the groove due to gravity. A clamping block is fixedly installed on the inner side of the synchronous crawler, and a rectangular groove is provided on the clamping block. The rectangular groove and the rectangular protrusion are clamped to enhance the stability in the vertical direction. The upper end of the guide wheel exceeds the lower end of the outer baffle and the inner baffle by 1-2 cm, and the distance between them is less than 1 cm, which will make the guide wheel close to the inner and outer baffles, and it is easy to accidentally touch and cause equipment failure; if the distance is greater than 2 cm, the rotation process of the synchronous crawler is more inconvenient.

[0010] The telescopic rod includes a contact rod, a rotating gear disc, a contact ball, a limiting spring, a sliding cavity, an elastic protrusion, a movable cavity and a telescopic block. The contact ball is rotatably installed on the upper end of the telescopic rod. The mass of the lower half of the contact ball is less than the mass of its upper half. A sliding cavity is provided on the upper inner side of the telescopic rod. An elastic protrusion is fixedly installed in the sliding cavity. The cross-sectional shape of the elastic protrusion is crescent-shaped, which is conducive to matching the outer surface of the contact ball. The end of the elastic protrusion close to the contact ball has the same curvature as the contact ball. An movable cavity is provided inside the telescopic rod. A limiting spring is clamped inside the movable cavity, and the lower end of the limiting spring is clamped with a telescopic block.

[0011] Preferably, each of the contact rods is made of rigid material, and a limiting spring is provided inside each contact rod. When the contact rod or the rotating sprocket is worn, or the contact rod and the rotating sprocket are engaged due to external reasons, interference between multiple contact rods and the rotating sprocket is likely to occur, thereby affecting the transportation efficiency of the entire conveyor belt. The contact rod is a telescopic rod and a limiting spring is provided inside. When the engagement occurs, the limiting spring inside the contact rod is quickly compressed to cause the contact rod to contract and conveniently disengage from the rotating sprocket, thereby avoiding affecting the normal operation of the conveyor belt and ensuring the operational stability of the conveyor belt to a certain extent. Each of the rotating sprockets in contact with the contact rod is provided with an inclined surface inclined toward the transmission direction of the conveyor belt. It plays a guiding role. When the rotating sprocket and the contact rod interfere with each other, the spherical contact ball can cooperate with the contact rod to easily disengage from the teeth of the rotating sprocket. The part of each contact ball that extends beyond the contact rod is equal to the thickness of the rotating sprocket. During normal operation, while ensuring stable transmission, the contact ball can be easily disengaged from the engagement of the rotating sprocket, thereby improving stability. The radial position of each contact ball is at the center of the teeth on the rotating sprocket. The engagement principle of the rotating sprocket is to transmit force and rotation direction through the teeth of different rotating sprockets. When the contact ball is at the center of the teeth on the rotating sprocket, the meshing point between them is farthest from the center of the rotating shaft, which means that their meshing force is the largest and the rotation stability is also higher.

[0012] Preferably, each of the contact balls is connected to the contact rod through a rotating rod, and each rotating rod is parallel to the direction of movement of the conveyor belt. Each of the contact balls is a ball with uneven mass, and the mass of the lower half is less than that of the upper half. An elastic protrusion is provided on the lower half of each contact ball, and two concave cavities that cooperate with the elastic protrusion are provided in the top of each contact rod, which are symmetrical with the rotating rod as the dividing line. Although the contact ball is limited to a spherical shape, the contact ball and the rotating gear disc are rigidly connected. If it gets stuck, the contact ball will continue to directly confront the rotating gear disc, resulting in damage. Through the cooperation of the rotating rod, When stuck, the contact ball can be rotated with the help of the counterforce, and the telescopic characteristics of the contact rod can make the contact ball easily disengage from the rotating sprocket. The contact ball is an unbalanced ball with a mass of the lower half less than that of the upper half, so this process is accelerated under the action of gravity. The function of the elastic protrusion and the two concave cavities is to ensure normal operation and prevent the contact ball from accidentally flipping over. The outer surface of the lower half of each contact ball is coated with a paint different from the color of the upper surface. When manually inspecting the conveyor belt, the color exposed by the contact ball is observed to quickly locate the rotating sprocket with interfering engagement, thereby improving the inspection efficiency.

[0013] A strong magnetic block is fixedly installed at the bottom of the base, and the upper surface of the strong magnetic block is coated to enhance its wear resistance. A limiting sleeve is fixedly installed on the outer surface of the strong magnetic block. The cross-sectional shape of the limiting sleeve is concave, which is conducive to the clamping of the limiting block and the telescopic block. An opening is opened on the top of the limiting sleeve, and the diameter of the opening is 1.1 times the diameter of the telescopic block, so as to ensure that the opening can accommodate the strong magnetic block.

[0014] An annular groove is provided at the top of the synchronous crawler, and a plurality of limiting rods cooperating with the annular groove are evenly distributed on the bottom of the outer baffle and the inner baffle. The cross-section of each annular groove is convex, and the curvature of the annular groove is the same as the curvature of the conveyor belt, and the lower end of each limiting rod is provided with a plurality of rollers cooperating with the annular groove. A ring groove is provided on the top side of each synchronous crawler, and a plurality of limit rods cooperating with the ring groove are evenly distributed on the bottom of the outer baffle or the inner baffle. The synchronous crawler is relatively long. Although it cooperates with the grooves on the plurality of guide wheels, it is in a rotating state and is prone to deviation. By evenly distributing a plurality of limit rods at the lower ends of the inner and outer baffles and cooperating with the ring groove on the synchronous crawler, multiple fulcrums are provided during the movement of the synchronous crawler to ensure the stable operation of the synchronous crawler. The cross-section of each ring groove is convex, and the opening at the upper end of the ring groove is contracted, which can engage the limit rod to prevent the limit rod from detaching, and the lower end of each limit rod is provided with a plurality of rollers cooperating with the ring groove. When the synchronous crawler is driven, the multiple rollers on the limit rod roll in the ring groove, reducing the friction between the ring groove and the limit rod, making the synchronous crawler move smoother.

[0015] The roller is made of rubber mixed with 5-8% of a special antistatic agent to enhance its antistatic properties. Rubber has good rotational friction performance, but it generates static electricity during rotation. Adding a special antistatic agent during its manufacturing process can effectively avoid static electricity and ensure operational stability. The cross-section of the roller is cylindrical, and multiple V-shaped grooves are provided on the outer surface of the roller along the central axis of the roller. The V-shaped grooves are used to enhance friction during rotation.

[0016] The tensioning assembly includes a slide, a compression spring, a slider, and a buffer pad. The slide is located at the front and rear ends of the inner and outer baffles. One end of the compression spring is clamped within the slide, and the other end of the compression spring is clamped to the slider. The lower end of the slider is fixedly connected to the upper end of the fixed rod, with the fixed rod being closest to the front and rear ends of the inner and outer baffles. The buffer pad is fixedly mounted on one side of the slider. The buffer pad has an isosceles trapezoidal cross-section. The isosceles trapezoidal shape facilitates the use of a larger surface to mate with the slider, thereby absorbing the slider's kinetic energy, ensuring stable movement while reducing impact on the baffles. Preferably, the bottom of each contact rod is made of alloy, the outer shell of each contact rod is made of PVE plastic, and the bottom end is connected to an alloy base. The slide is located 1 / 3 of the way to the compression spring at point A, and 1 / 5 of the way away from the compression spring at point B. The slider's displacement range is limited between points A and B, ensuring that the fixed rod, to which the other end of the slider is fixed, can move within a certain range, ensuring stability and continuity during material transportation.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention provides a driving component on the conveyor belt, and utilizes the driving force of the conveyor belt to drive the multiple guide wheels on the inner and outer baffles to rotate. The synchronous crawler belts mounted on the multiple guide wheels follow the rotation, giving the main power to the oblong workpiece away from the inner and outer baffles, and the two synchronous crawler belts rotate toward each other toward the center of the conveyor belt. The main power given to the workpiece is in the direction of the center of the conveyor belt. The workpiece passes through the corner conveyor line stably in the form of dynamic swing, avoiding damage to the workpiece caused by rigid friction and collision with the inner or outer baffle, improving the stability of the conveyor line in transporting finished injection molded parts, and reducing the probability of defective and defective products.

[0019] 2. The present invention evenly distributes multiple limiting rods and rollers at the lower ends of the inner and outer baffles, cooperates with the convex-shaped annular groove on the side section of the synchronous crawler, and uses the positions of the multiple limiting rods as fulcrums to provide support for the synchronous crawler, thereby ensuring the stable operation of the synchronous crawler and avoiding deviation. The rollers are engaged with both sides of the convex-shaped annular groove, and the rolling friction of the rollers is used to reduce the friction between the annular groove and the limiting rods, making the synchronous crawler move smoother, improving the stability of the synchronous crawler, continuously providing buffering for passing workpieces, and improving the stability of the conveyor line in transporting finished injection molded parts.

[0020] 3. The present invention provides tensioning components at both ends of the inner and outer baffles, and drives the synchronous crawler to be continuously tensioned by the elastic force of the elastic member, so as to avoid the synchronous crawler from contacting the workpiece too many times or after long-term use, which may cause the fatigue strength of the synchronous crawler to increase and lead to loosening or falling off. The belt teeth on the synchronous crawler can stably engage with the grooves on the multiple guide wheels, and the synchronous crawler can run stably, continuously providing buffering for the passing workpiece, preventing the workpiece from colliding with the inner and outer baffles and being damaged, thereby improving the stability of the conveyor line in transporting finished injection molded parts and reducing the probability of defective and defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] It is obvious to those skilled in the art that other figures can be derived from these figures without inventive effort. The above and other aspects of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This invention Figure 1 A magnified view of area A in the middle;

[0024] Figure 3 It is a schematic diagram of the structure of the drive assembly of the present invention;

[0025] Figure 4 This is a schematic diagram of the matching structure of the telescopic rod and the base of the present invention;

[0026] Figure 5 This invention Figure 4 A magnified view of the middle B area;

[0027] Figure 6 This invention Figure 2 Local cross-section along the AA direction.

[0028] In the figure: 1. frame; 2. roller; 3. conveyor belt; 4. outer baffle; 5. inner baffle; 6. feed port; 7. discharge port; 8. drive assembly; 81. fixing rod; 82. ball; 83. guide wheel; 831. clamping groove; 84. rotating gear plate; 841. latching tooth; 85. telescopic rod; 851. contact rod; 852. contact ball; 853. limiting spring; 854. sliding cavity; 855. elastic protrusion; 856. movable cavity; 857. telescopic block; 86. base; 861. strong magnetic block; 862. limiting sleeve; 863. opening; 87. synchronous crawler; 871. clamping block; 872. ring groove; 873. limiting rod; 874. roller. DETAILED DESCRIPTION

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0030] like Figures 1 to 6 As shown, a finished product conveyor line of an injection molding machine includes a frame 1, rollers 2, a conveyor belt 3, an outer baffle 4, an inner baffle 5, a feed port 6 and a discharge port 7; a plurality of rollers 2 are rotatably mounted on the top of the frame 1, and a conveyor belt 3 is slidably mounted on the side of the roller 2, the outer baffle 4 and the inner baffle 5 are coaxially fixedly mounted on the top of the base frame, a plurality of rollers 2 are rotatably mounted on the frame 1, and a plurality of the rollers 2 form a conveying path with a bending angle on the frame 1, and a conveyor belt 3 is commonly wound around the plurality of the rollers 2, and a driving unit for driving the plurality of rollers 2 to rotate is provided on the frame 1, and an outer baffle 4 and an inner baffle 5 arranged coaxially are provided on the frame 1, and the outer baffle 4 and the inner baffle 5 They are respectively arranged on both sides of the conveyor belt 3, and the two sides of the conveyor belt 3 are respectively provided with a feed port 6 and a discharge port 7; a guide plate is provided on the side of the outer baffle 4 close to the feed port 6, and the guide plate is inclined 30°-45° toward the side of the inner baffle 5. The workpiece enters the turning part through the feed port 6, and is driven by the synchronous crawlers 87 on both sides to drive the workpiece out of the discharge port 7. The guide rod is arranged to be inclined 30°-45° toward the side of the inner baffle 5, so that the workpiece can enter the turning part with an inclination of 30°-45°. Because the synchronous crawlers 87 on both sides have the same linear speed as the conveyor belt 3, and maintain the same posture when detaching from the discharge port 7, it is convenient for multiple workpieces to pass through, and it is not easy to have accumulation problems, thereby improving the stability of transmission.

[0031] It also includes a driving component 8 and a tensioning component 9. The driving component 8, which is internally provided with a guide wheel 83 and a synchronous crawler 87, is fixedly installed under the inner baffle 5 and the outer baffle 4; the driving force of the conveyor belt 3 drives the guide wheel 83 and the synchronous crawler 87 to rotate, and the synchronous crawler 87 gives the workpiece power toward the center of the conveyor belt 3, so that the workpiece passes through the corner conveyor line stably in the form of dynamic swing; the tensioning component 9 drives the synchronous crawler 87 to be continuously tensioned through the elastic force of the elastic part, and the tensioning component 9 continuously buffers the movement of the workpiece, so that the workpiece always maintains a certain gap with the inner and outer baffles 4 during the transportation process.

[0032] like Figure 2 、 Figure 3 and Figure 4As shown, the driving assembly 8 also includes a fixed rod 81, a ball 82, a rotating gear disc 84, a telescopic rod 85 and a base 86; the fixed rod 81 is fixedly mounted on the lower ends of the inner baffle 5 and the outer baffle 4, the ball 82 is rotatably mounted on the fixed lower end, the ball 82 and the upper side of the conveyor belt 3 are interference fit, a guide wheel 83 is rotatably mounted above the fixed rod 81, the rotating gear disc 84 is fixedly mounted below the guide wheel 83, the outer surface of the guide wheel 83 is rotatably mounted with the synchronous crawler 87, the area covered by the synchronous crawler 87 of the guide wheel 83 is s, the side area of ​​the guide wheel 83 is S, and numerically S is twice s, so as to ensure the continuity of rotation; the telescopic rod 85 is clamped in the middle of the rotating gear disc 84, and the lower end of the telescopic rod 85 is clamped with the base 86.

[0033] During operation, when the conveyor belt 3 repeatedly rotates through multiple rollers 2, multiple contact rods 851 arranged on the conveyor belt 3 move linearly along with the conveyor belt 3. During the process, the multiple contact rods 851 continuously engage with the rotating gear plates 84 at the lower ends of the multiple guide wheels 83, driving the multiple guide wheels 83 to rotate at the same linear speed, that is, the synchronous crawler 87 mounted on the multiple guide wheels 83 rotates along the same linear speed. When the workpiece passes through the feed port 6 and enters the corner and contacts the synchronous crawler 87, the synchronous crawler 87 can actively give the workpiece a force toward the middle of the conveyor belt 3, so that it stays away from the inner and outer baffles 4, reducing unnecessary friction and improving the service life of the synchronous crawler 87.

[0034] like Figure 3 As shown, the driving assembly 8 includes a plurality of contact rods 851 evenly distributed on the left and right sides of the conveyor belt 3, and a rotating toothed disc 84 is provided at the lower end of each guide wheel 83. The tooth top of each rotating toothed disc 84 is located between the outer circumference of the fixed rod 81 and the outer circumference of the guide wheel 83, and a plurality of contact rods 851 are in transmission engagement with the rotating toothed disc 84. A spherical contact ball 852 is provided at the top of each contact rod 851 to reduce the friction between the contact ball 852 and the rotating toothed disc 84, so that the contact rod 851 can easily enter / disengage the rotating toothed disc 84, thereby improving the transmission stability of the contact rod 851 and the rotating toothed disc 84; each contact rod 851 is arranged near the center of the conveyor belt 3 On one side, the contact rod 851 drives the multiple guide wheels 83 on the outer baffle 4 to rotate counterclockwise, and drives the multiple guide wheels 83 on the inner baffle 5 to rotate clockwise. During the movement, the conveyor belt 3 drives the multiple guide wheels 83 and the synchronous crawler belt 87 to rotate through the contact rod 851 and the rotating gear plate 84, giving the workpiece an active force to keep it away from the inner and outer baffles 4, driving the guide wheel 83 at the outer baffle 4 to rotate counterclockwise, and the guide wheel 83 at the inner baffle 5 to rotate clockwise. When the workpiece enters the corner and contacts the inner and outer baffles 4, it can give the workpiece an active force toward the center of the conveyor belt 3, allowing the workpiece to pass through the corner stably, avoiding friction contact with the inner and outer baffles 4, and improving the conveying stability of the conveyor line.

[0035] The outer surface of the guide wheel 83 is provided with a circumferential array of clamping grooves 831, and the inner vertical linear array of the clamping grooves 831 has rectangular protrusions; 8 latching teeth 841 are fixedly installed around the rotating gear disc 84. If there are less than 6 latching teeth 841, the sense of frustration during rotation will be strong. If there are more than 10 latching teeth 841, the space between the latching teeth 841 is small and cannot accommodate the clamping of the telescopic rod 85. The cross-sectional shape of the latching teeth 841 is an isosceles trapezoid; the lower ends of the outer baffle 4 and the inner baffle 5 are evenly distributed with multiple fixing rods 81, and each of the fixing rods 81 is sleeved with a guide wheel 83 that assists the long workpiece to stably pass through the turning conveyor line. The guide wheels 83 are provided with a plurality of grooves, and the guide wheels 83 are all provided with a synchronous crawler 87, and the plurality of belt teeth on the synchronous crawler 87 are engaged with the grooves. When the conveyor belt 3 is conveying the workpiece, it only needs to be able to fully carry the workpiece. However, when some oblong workpieces are placed perpendicular to the conveyor belt 3, they will collide with the racks 1 on both sides of the conveyor belt 3, that is, the length is greater than the width of the conveyor belt 3. When such workpieces pass through the conveyor belt 3 that needs to turn, for example 90 degrees, they are prone to collide and rub against the baffles on both sides of the conveyor belt 3 at the turning point, causing the workpiece to be easily damaged and become defective or defective, especially for For injection molded parts, it is even worse. The circumferential edge of each guide wheel 83 exceeds the circumferential edge of the guide wheel 83 by 1.5 cm. When the long and flat workpiece enters the bend, because the length of the workpiece is greater than the width of the conveyor belt 3, it will preferentially contact the guide wheel 83 and the synchronous crawler 87. The synchronous crawler 87 is generally made of rubber material and has a certain buffering capacity. When the workpiece contacts it, there will be no rigid friction, which reduces the wear of the workpiece. The outer baffle plate 4 and the inner baffle plate 5 are both provided with a tensioning component 9 for continuously tensioning the synchronous crawler 87. The synchronous crawler 87 will experience tensile fatigue during long-term use, which is prone to stretching of the synchronous crawler 87. In the case of a long track, and the synchronous crawler 87 is in a vertical state relative to the ground, the teeth of the synchronous crawler 87 may be out of the groove due to gravity. A clamping block 871 is fixedly installed on the inner side of the synchronous crawler 87. The clamping block 871 is provided with a rectangular groove, and the rectangular groove and the rectangular protrusion are clamped to enhance the stability in the vertical direction. The upper end of the guide wheel 83 exceeds the lower end of the outer baffle 4 and the inner baffle 5 by 1-2 cm, and the distance therebetween is less than 1 cm, which will make the guide wheel 83 close to the inner baffle 5 and the outer baffle 4, which is prone to accidental touch and cause equipment failure; if the distance is greater than 2 cm, the rotation process of the synchronous crawler 87 is relatively inconvenient.

[0036] like Figure 3 and Figure 4As shown, the telescopic rod 85 includes a contact rod 851, a rotating gear plate 84, a contact ball 852, a limiting spring 853, a sliding cavity 854, an elastic protrusion 855, an active cavity 856 and a telescopic block 857. The contact ball 852 is rotatably installed on the upper end of the telescopic rod 85. The mass of the lower half of the contact ball 852 is less than the mass of its upper half. A sliding cavity 854 is provided on the upper inner side surface of the telescopic rod 85. An elastic protrusion 855 is fixedly installed in the sliding cavity 854. The cross-sectional shape of the elastic protrusion 855 is crescent-shaped, which is conducive to matching the outer surface of the contact ball 852. The end of the elastic protrusion 855 close to the contact ball 852 has the same curvature as the contact ball 852. An active cavity 856 is provided inside the telescopic rod 85. The limiting spring 853 is clamped inside the active cavity 856, and the lower end of the limiting spring 853 is clamped with the telescopic block 857.

[0037] During operation, when the contact rod 851 or the rotating sprocket 84 is worn, or the contact rod 851 and the rotating sprocket 84 are engaged due to external reasons, it is easy to cause interference between multiple contact rods 851 and the rotating sprocket 84, thereby affecting the transportation efficiency of the entire conveyor belt 3. The contact rod 851 is a telescopic rod 85 and is provided with a limiting spring 853 inside. When an engagement occurs, the limiting spring 853 inside the contact rod 851 is quickly compressed to cause the contact rod 851 to shrink and easily disengage from the rotating sprocket 84, thereby avoiding affecting the normal operation of the conveyor belt 3 and ensuring the operating stability of the conveyor belt 3 to a certain extent.

[0038] like Figure 4 As shown, each of the contact rods 851 is made of rigid material, and a limiting spring 853 is provided inside each contact rod 851. A slope inclined toward the transmission direction of the conveyor belt 3 is provided on the side of each rotating toothed disc 84 that contacts the contact rod 851. The slope plays a guiding role. When the rotating toothed disc 84 and the contact rod 851 interfere with each other, the spherical contact ball 852 can be used to allow the contact rod 851 to be easily disengaged from the teeth of the rotating toothed disc 84. The portion of each contact ball 852 that exceeds the contact rod 851 is equal to the thickness of the rotating toothed disc 84. Degree, during normal operation, under the premise of ensuring stable transmission, the contact ball 852 can be easily disengaged from the rotating gear plate 84 to improve stability; and the radial position of each contact ball 852 is at the center position of the teeth on the rotating gear plate 84. The meshing principle of the rotating gear plate 84 is to transmit force and rotation direction through the teeth of different rotating gear plates 84. When the contact ball 852 is at the center position of the teeth on the rotating gear plate 84, the meshing point between them is farthest from the center of the rotating shaft, which means that their meshing force is the largest and the rotation stability is also higher.

[0039] like Figure 5As shown, each of the contact balls 852 is connected to the contact rod 851 through a rotating rod, and each rotating rod is parallel to the movement direction of the conveyor belt 3. Each of the contact balls 852 is a ball with uneven mass, and the mass of the lower half is less than that of the upper half. An elastic protrusion 855 is provided on the lower half of each contact ball 852, and two concave cavities that are symmetrical with the rotating rod as the dividing line and cooperate with the elastic protrusion 855 are provided in the top of each contact rod 851. Although the contact ball 852 is limited to a spherical shape, the contact ball 852 and the rotating gear disc 84 are rigidly connected. If it gets stuck, the contact ball 852 will continue to directly confront the rotating gear disc 84, resulting in damage. The contact ball 852 can rotate with the help of the counterforce when it is stuck, and the contact ball 852 can be easily separated from the rotating toothed disc 84 by cooperating with the telescopic characteristics of the contact rod 851. The contact ball 852 is an unbalanced ball with a mass of the lower half less than that of the upper half, and this process is accelerated under the action of gravity. The role of the elastic protrusion 855 and the two concave cavities is to ensure normal operation and avoid the situation where the contact ball 852 accidentally flips over. The outer surface of the lower half of each contact ball 852 is coated with a paint different from the color of the upper surface. When manually inspecting the conveyor belt 3, the color exposed by the contact ball 852 is observed, and the rotating toothed disc 84 with interfering engagement can be quickly located, thereby improving the inspection efficiency.

[0040] like Figure 3 As shown, a strong magnetic block 861 is fixedly installed at the bottom of the base 86, and the upper surface of the strong magnetic block 861 is coated to enhance the wear resistance. A limiting sleeve 862 is fixedly installed on the outer surface of the strong magnetic block 861. The cross-sectional shape of the limiting sleeve 862 is concave, which is conducive to the clamping of the limiting block and the telescopic block 857. An opening 863 is provided on the top of the limiting sleeve 862, and the diameter of the opening 863 is 1.1 times the diameter of the telescopic block 857, thereby ensuring that the opening 863 can accommodate the strong magnetic block 861.

[0041] like Figure 6As shown, an annular groove 872 is provided at the top of the synchronous crawler 87, and a plurality of limiting rods 873 cooperating with the annular groove 872 are evenly distributed on the bottom of the outer baffle 4 and the inner baffle 5. The cross section of each annular groove 872 is convex-shaped, and the curvature of the annular groove 872 is the same as the curvature of the conveyor belt 3. The lower end of each limiting rod 873 is provided with a plurality of rollers 874 cooperating with the annular groove 872. An annular groove 872 is provided on the top side of each synchronous crawler 87, and a plurality of limiting rods 873 cooperating with the annular groove 872 are evenly distributed on the bottom of the outer baffle 4 or the inner baffle 5. The length of the synchronous crawler 87 is long. Although it cooperates with the grooves on the plurality of guide wheels 83, it is easy to deviate when in a rotating state. By evenly distributing a plurality of limiting rods 873 at the lower ends of the inner and outer baffles 4 and cooperating with the annular groove 872 on the synchronous crawler 87, the synchronous crawler 87 is provided with multiple fulcrums for support during its movement, ensuring For the stable operation of the synchronous crawler 87, the cross-section of each of the annular grooves 872 is convex-shaped, and the opening 863 at the upper end of the annular groove 872 is contracted, which can engage the limiting rod 873 to prevent the limiting rod 873 from detaching, and the lower end of each limiting rod 873 is provided with a plurality of rollers 874 that cooperate with the annular groove 872. When the synchronous crawler 87 is transmitted, the plurality of rollers 874 on the limiting rod 873 roll in the annular groove 872, reducing the friction between the annular groove 872 and the limiting rod 873, allowing the synchronous crawler 87 to move more smoothly.

[0042] The roller 874 is made of rubber mixed with 5-8% of a special antistatic agent to enhance its antistatic properties. Rubber has good rotational friction performance, but static electricity will be generated during the rotation process. Adding a special antistatic agent during its manufacturing process will effectively avoid static electricity and ensure operational stability. The cross-sectional shape of the roller 874 is cylindrical, and a plurality of V-shaped grooves are provided on the outer surface of the roller 874 along the central axis of the roller 874. The V-shaped grooves are used to enhance friction during rotation.

[0043] The tensioning assembly includes a slide groove, an extrusion spring, a slider and a buffer pad; the slide groove is opened at the head and tail ends of the inner baffle 5 and the outer baffle 4, and one end of the extrusion spring is clamped inside the slide groove, and the other end of the extrusion spring is clamped with the slider, and the lower end of the slider is fixedly connected to the upper end of the fixed rod 81, and the fixed rod 81 here is closest to the head and tail ends of the inner baffle 5 and the outer baffle 4. The buffer pad is fixedly installed on one side of the slider, and the cross-sectional shape of the buffer pad is an isosceles trapezoid. The isosceles trapezoid is conducive to using a larger side to fit with the slider, so as to realize the absorption of the kinetic energy of the slider, ensure the stability of the movement while reducing the impact on the baffle. The bottom of each contact rod 851 is made of alloy material, the outer shell of each contact rod 851 is made of PVE plastic material, and the bottom end is connected to a base 86 made of alloy material. The slide groove is close to 1 / 3 of the extrusion spring as point A, and the slide groove is away from 1 / 5 of the extrusion spring as point B. The displacement area of ​​the slider is limited between points A and B, so as to ensure that the fixed rod 81 fixed at the other end of the slider can move within a certain range, ensuring stability and continuity in the material transportation process.

[0044] During operation, each of the contact rods 851 extends through the conveyor belt 3 to the lower end of the conveyor belt 3, and each contact rod 851 is fixed to the conveyor belt 3 by a strong magnetic block 861. The contact rod 851 and the rotating gear disc 84 will wear out after long-term contact. The strong magnetic block 861 and the contact rod 851 are directly fixed, which is equivalent to clamping the conveyor belt 3. When replacement is needed, the contact rod 851 can be removed by simply removing the strong magnetic block 861, thereby achieving the effect of convenient replacement. Each of the strong magnetic blocks 861 is wrapped with a limiting sleeve 862 made of non-magnetic material, and each limiting sleeve 862 has an opening 863 on one side that matches the shape of the bottom of the contact rod 851. The limiting sleeve 862 can avoid the magnetic attraction of the strong magnetic block 861 on other parts, allowing the strong magnetic block 861 to simply be magnetically attracted to the bottom of the contact rod 851 through the opening 863, thereby avoiding the strong magnetic block 861 affecting the operation of other mechanisms, thereby affecting the transportation stability of the conveyor belt 3.

[0045] During the working process of the present invention, when the conveyor belt 3 repeatedly rotates the conveyor belt 3 through the multiple rollers 2, the multiple contact rods 851 arranged on the conveyor belt 3 move linearly with the conveyor belt 3. During the process, the multiple contact rods 851 continuously engage with the rotating toothed discs 84 at the lower ends of the multiple guide wheels 83, driving the multiple guide wheels 83 to rotate at the same linear speed, that is, the synchronous crawler 87 set on the multiple guide wheels 83 rotates at the same linear speed. When the workpiece passes through the feed port 6 and enters the corner and contacts the synchronous crawler 87, the synchronous crawler 87 can actively give the workpiece a force toward the middle of the conveyor belt 3, so that it is away from the inner and outer baffles 4. When the contact rod 851 or the rotating sprocket 84 is worn, or the contact rod 851 and the rotating sprocket 84 are engaged due to external reasons, it is easy to cause interference between multiple contact rods 851 and the rotating sprocket 84, thereby affecting the transportation efficiency of the entire conveyor belt 3. The contact rod 851 is a telescopic rod 85 and is provided with a limiting spring 853 inside. When the engagement occurs, the limiting spring 853 inside the contact rod 851 is quickly compressed to cause the contact rod 851 to shrink and easily disengage from the rotating sprocket 84, avoiding affecting the normal operation of the conveyor belt 3 and ensuring the operating stability of the conveyor belt 3 to a certain extent. During operation, each of the contact rods 851 extends through the conveyor belt 3 to the lower end of the conveyor belt 3, and each contact rod 851 is fixed to the conveyor belt 3 by a strong magnetic block 861. The contact rod 851 and the rotating gear disc 84 will wear out after long-term contact. The strong magnetic block 861 and the contact rod 851 are directly fixed, which is equivalent to clamping the conveyor belt 3. When replacement is needed, the contact rod 851 can be removed by simply removing the strong magnetic block 861, thereby achieving the effect of convenient replacement. Each of the strong magnetic blocks 861 is wrapped with a limiting sleeve 862 made of non-magnetic material, and each limiting sleeve 862 has an opening 863 on one side that matches the shape of the bottom of the contact rod 851. The limiting sleeve 862 can avoid the magnetic attraction of the strong magnetic block 861 on other parts, allowing the strong magnetic block 861 to be simply magnetically attracted to the bottom of the contact rod 851 through the opening 863.

[0046] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and those skilled in the art may also make other combinations of the various technical features based on the disclosed purpose, so as to achieve the purpose of the present disclosure.

Claims

1. A finished product conveying line for an injection molding machine, comprising a frame (1), rollers (2), a conveyor belt (3), an outer baffle (4), an inner baffle (5), a feed port (6), and a discharge port (7); a plurality of rollers (2) are rotatably mounted on the top of the frame (1), a conveyor belt (3) is slidably mounted on the side of the rollers (2), the outer baffle (4) and the inner baffle (5) are fixedly mounted on the top of the frame (1), and the feed port (6) and the discharge port (7) are located on both sides of the conveyor belt (3); characterized in that, The invention also includes a driving assembly (8) and a tensioning assembly (9), wherein the driving assembly (8) is fixedly mounted below the inner baffle (5) and the outer baffle (4); the driving force of the conveyor belt (3) drives the guide wheel (83) and the synchronous crawler (87) to rotate, and the synchronous crawler (87) gives the workpiece a force toward the center of the conveyor belt (3), so that the workpiece passes the corner stably in the form of dynamic swing, and the tensioning assembly (9) is fixedly mounted inside the outer baffle (4); The driving assembly (8) further comprises a fixed rod (81), a ball (82), a rotating toothed disc (84), a telescopic rod (85) and a base (86); the fixed rod (81) is fixedly mounted on the lower end of the inner baffle (5); the ball (82) is rotatably mounted on the lower end of the fixed rod (81); the ball (82) is used to be interference fit with the conveyor belt (3) so that the ball (82) can rotate under the drive of the conveyor belt; a guide wheel (83) is rotatably mounted above the fixed rod (81); and a guide wheel (83) is fixed below the guide wheel (83). The rotating toothed disc (84) is installed, and the outer surface of the guide wheel (83) is rotatably installed with the synchronous crawler (87). The telescopic rod (85) is clamped in the middle of the rotating toothed disc (84), and the lower end of the telescopic rod (85) is clamped with the base (86); the multiple telescopic rods (85) arranged on the conveyor belt (3) move linearly following the conveyor belt (3). During the process, the multiple telescopic rods (85) continuously engage with the rotating toothed discs (84) at the lower ends of the multiple guide wheels (83), driving the multiple guide wheels (83) to rotate at the same linear speed.

2. The finished product conveying line of an injection molding machine according to claim 1, characterized in that: The tensioning assembly (9) drives the synchronous crawler (87) to be continuously tensioned by the elastic force of the elastic member. The tensioning assembly (9) continuously buffers the movement of the workpiece, so that a certain gap is always maintained between the workpiece and the inner and outer baffles (4) during the conveying process.

3. The finished product conveying line of an injection molding machine according to claim 1, characterized in that: The outer surface of the guide wheel (83) is provided with a circumferential array of clamping grooves (831), the rotating gear disc (84) is fixedly provided with clamping teeth (841) around it, and the inner side surface of the synchronous crawler (87) is fixedly provided with a clamping block (871), and the clamping block (871) is used to cooperate with the clamping groove (831) to push the synchronous crawler (87) to move, so that the driving component (8) can continuously obtain power to rotate synchronously with the conveyor belt (3).

4. The finished product conveying line of an injection molding machine according to claim 1, characterized in that: The telescopic rod (85) includes a contact rod (851), a contact ball (852), a limiting spring (853), a sliding cavity (854), an elastic protrusion (855), an active cavity (856) and a telescopic block (857). The contact ball (852) is rotatably mounted on the upper end of the telescopic rod (85). The inner side surface of the telescopic rod (85) is provided with a sliding cavity (854). A crescent-shaped elastic protrusion (855) is fixedly mounted in the sliding cavity (854). The elastic protrusion (855) is crescent-shaped and is used to cooperate with the surface of the contact ball (852), thereby improving the stability and continuity of the movement process of the drive component (8). The interior of the telescopic rod (85) is provided with an active cavity (856). The interior of the active cavity (856) is clamped with a limiting spring (853) for helping the contact ball (852) to reset. The lower end of the limiting spring (853) is clamped with a telescopic block (857).

5. The finished product conveying line of an injection molding machine according to claim 3, characterized in that: The cross-sectional shape of the latching teeth (841) is an isosceles trapezoid, and the positions of the contact balls (852) are fixed between adjacent latching teeth (841) by the limiting effect of the isosceles trapezoidal hypotenuse, thereby providing continuous power output to the driving component (8).

6. The finished product conveying line of an injection molding machine according to claim 1, characterized in that: A strong magnetic block (861) is fixedly installed below the base (86), and a limiting sleeve (862) is fixedly installed on the outer surface of the strong magnetic block (861). The cross-sectional shape of the limiting sleeve (862) is a "concave" shape. An opening (863) is provided at the upper end of the "concave" limiting sleeve (862). The opening (863) is used to protect the moving telescopic block (857) from contacting the conveyor belt (3), thereby avoiding damage to the drive component (8).

7. The finished product conveying line of an injection molding machine according to claim 3, characterized in that: The top of the synchronous crawler (87) is provided with an annular groove (872), and the bottoms of the outer baffle (4) and the inner baffle (5) are evenly distributed with a plurality of limiting rods (873) that cooperate with the annular groove (872), and the lower end of each limiting rod (873) is provided with a plurality of rollers (874) that cooperate with the annular groove (872), and the outer surface of the roller (874) is provided with a plurality of V-shaped grooves along the central axis of the roller (874), and the V-shaped grooves are used to strengthen the friction between the roller (874) and the synchronous crawler (87) to prevent slipping and thus displacement of a specified distance.

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