A packaging box die-cutting waste removal mechanism and a fully automatic waste removal machine

Abstract

The application belongs to the technical field of packaging equipment, and particularly discloses a packaging box die cutting and waste cleaning mechanism and a full-automatic waste cleaning machine. A die assembly is slidably arranged on the upper portion of a rack and connected with a driving end of a die driving unit fixed on the rack. A supporting plate is arranged below the die assembly and fixed with the rack. The supporting plate is provided with a plurality of ejector pin holes. An ejector pin assembly is slidably connected with the rack and arranged below the supporting plate. A jacking driving assembly is connected with the rack and has a driving end connected with the ejector pin assembly. The ejector pin assembly is provided with a plurality of ejector pins which can slide through the ejector pin holes. The screw rod of the jacking driving assembly is vertically arranged and supported at both ends by bearing seats. The driving motor and the bearing seats are fixed with the rack. The driven wheel is coaxially fixed with the screw rod. The driving shaft of the driving motor is fixedly connected with a driving wheel connected with the driven wheel. The nut is threadedly engaged with the screw rod, sleeved on the screw rod and fixed with a supporting frame. The top end of the supporting frame is connected with the lower portion of the ejector pin assembly. The application has the characteristics of compact structure, simple adjustment, quick needle replacement and good waste cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, specifically to a packaging box die-cutting waste removal mechanism and a fully automatic waste removal machine that is compact in structure, easy to adjust, quick to change needles, and has good waste removal effect. Background Technology

[0002] Die-cutting is a post-printing processing technique where printed materials or other paper products are made into a die-cutting plate according to a pre-designed pattern. Pressure is then applied to cut or crease the printed materials or other paper products, thus allowing the product to be shaped beyond straight edges and right angles. Typically, die-cutting combines the die-cutting blade and the crease cutter within the same template, performing both die-cutting and crease-forming simultaneously on a die-cutting machine.

[0003] After die-cutting printed materials or other paper products, some areas remain connected between the waste material and the raw material to be cleaned. This requires manual or mechanical pressing to separate the waste material from the raw material – a process known as waste removal. Current manual or mechanical waste removal methods apply pressure to the surface of the waste material to force it to separate from the raw material. However, this often results in only one side of the waste material separating from the raw material, while the other side remains connected. In this case, with only the top surface under pressure, the waste material will flip along the edge connected to the raw material, interrupting the waste removal process and impacting production efficiency.

[0004] Currently, to address the issue of interrupted waste removal caused by applying pressure to the surface of waste material, the general approach is to install a horizontal machine body with a clamping plate for holding the cardboard packaging boxes to be removed. A cavity is created within the machine body, and a push rod slides vertically within the cavity. A through hole is provided at one end of the machine body facing the clamping plate for the push rod to pass through. The machine body also has a pressing frame for pressing the cardboard packaging boxes. The pressing frame is then driven by a power source to press the cardboard packaging boxes firmly onto the clamping plate. The push rod is then driven to extend from the through hole to push the remaining portion of the packaging box out of the cardboard, while the waste material remains between the clamping plate and the pressing frame and is removed. However, existing ejector pin cleaning mechanisms have a large number of ejector pins. When cleaning different packaging paper or replacing some ejector pins, the different installation structures of the ejector pins will result in significantly different adjustment workloads. For example, existing ejector pins mostly adopt a double-layer clamping structure of a fixed plate and a pressure plate, with the bottom of the ejector pin designed as a stepped shaft. By inserting the large shaft at the bottom of each ejector pin into the corresponding through hole of the lower pressure plate, the small shaft of the ejector pin is tightly fitted through the through hole on the fixed plate, and finally the pressure plate is fastened to the bottom of the fixed plate with screws to clamp and fix the ejector pin, thereby fixing the ejector pin. However, since adjusting or replacing some ejector pins requires separating the entire pressure plate from the fixed plate, the replacement process is cumbersome and difficult, often taking half a day to complete. To address this, existing technologies have also incorporated multiple parallel sliding strips on the ejector mounting plate. On one side of the adjacent contact surface of the sliding strips, there are spaced mounting half-holes I or inclined surfaces I that tightly fit the ejector pins. Simultaneously, on the other side of the adjacent contact surface, there are corresponding spaced mounting half-holes II or inclined surfaces II with a diameter larger than the ejector pin and eccentrically positioned. Finally, the two sliding strips on adjacent contact surfaces slide and misalign to allow the ejector pins to be inserted between the mounting holes or inclined surfaces. Then, the two sliding strips are pushed to shift and clamp the ejector pins, completing the replacement of a row of ejector pins. Although this significantly improves replacement efficiency compared to a double-layer clamping structure, each replacement requires moving the entire row of ejector pins, making it difficult to achieve on-demand replacement. For situations where the ejector pins along the edge change significantly, the replacement efficiency remains cumbersome and low. In addition, existing technologies mostly use pneumatic or hydraulic cylinders to drive the push rod to move up and down. Although the drive structure is relatively simple, the stroke of pneumatic and hydraulic cylinders often requires the use of limit switches or grating rulers for effective control. Limit switches need to be readjusted when clearing waste from different cardboard boxes, making the adjustment process cumbersome and the control accuracy low. Although grating rulers do not require adjustment and have high control accuracy, they are too expensive. Moreover, the driving process of pneumatic and hydraulic cylinders is not smooth enough, which can easily lead to momentary overload and damage to the push rod. Although this can be improved by using proportional valves, buffer valves, etc., it will make the fluid control circuit too complex. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a packaging box die-cutting waste removal mechanism that is compact in structure, easy to adjust, quick to change needles, and has a good waste removal effect, and also provides a fully automatic packaging box die-cutting waste removal machine.

[0006] The packaging box die-cutting waste removal mechanism of the present invention is implemented as follows: it includes a frame, a mold assembly, a mold drive unit, a support plate, an ejector pin assembly, and a lifting drive assembly. The mold assembly is slidably disposed on the upper part of the frame. The mold drive unit is fixedly disposed on the frame and its drive end is connected to the mold assembly to drive the mold assembly to slide up and down. The support plate is placed parallel to the mold assembly below and is fixedly connected to the frame. The support plate is provided with a plurality of ejector pin holes through the top and bottom. The ejector pin assembly is slidably connected to the frame and disposed below the support plate. The lifting drive assembly is connected to the frame and its drive end is connected to the ejector pin assembly to drive the ejector pin assembly to slide up and down. The ejector pin assembly is detachably provided with a plurality of ejector pins that can slide through the ejector pin holes.

[0007] The lifting drive assembly includes a lead screw, a drive motor, a driven wheel, a nut, a support frame, and bearing seats. The lead screw is vertically arranged and supported at both ends by bearing seats. The drive motor and bearing seats are fixedly connected to the frame. The driven wheel is coaxially fixedly connected to the lead screw. The drive shaft of the drive motor is fixedly connected to a drive wheel. The driven wheel is connected to the drive wheel. The nut is threadedly sleeved on the lead screw and fixedly connected to the support frame. The top of the support frame is connected to the lower part of the ejector pin assembly.

[0008] Furthermore, the ejector assembly also includes an ejector clamping plate and an ejector mounting plate. The ejector includes an ejector rod, an ejector groove, and an ejector shank. The ejector rod is cylindrical, the ejector groove is circumferentially located at the lower part of the ejector rod, and the ejector shank has a waist-shaped cross-section. The ejector mounting plate is placed parallel to each other and has several mounting holes that can slide through and tightly fit the ejector shank. The ejector clamping plate is fixedly mounted on the top of the ejector mounting plate. The ejector clamping plate has several waist holes corresponding to the mounting holes of the ejector mounting plate. The length of the waist hole is greater than the diameter of the ejector shank, and the width of the waist hole is greater than the width of the ejector shank but less than the diameter of the ejector shank. The top of the support frame is fixedly connected to or hinged to the lower part of the ejector mounting plate.

[0009] Furthermore, the outer diameter of the waist-shaped structure of the ejector pin handle is not less than the inner diameter of the ejector pin groove, the width of the waist hole is greater than the diameter of the ejector pin groove and the width of the waist-shaped structure of the ejector pin handle, and the axial length of the ejector pin groove is not less than the depth of the waist hole.

[0010] Furthermore, the ejector pin is provided with a fixing handle at the bottom end of the ejector pin handle. The fixing handle is cylindrical and its diameter is not greater than the width of the waist-shaped structure of the ejector pin handle. The ejector pin mounting plate is also provided with a fixing hole at the lower end of the mounting hole. The fixing handle slides into the fixing hole. The axial length of the ejector pin handle is not greater than the depth of the mounting hole.

[0011] Furthermore, the outer circular surface of the fixing handle is provided with a circumferentially surrounding groove, and an elastic sealing ring is fitted in the groove. The outer diameter of the elastic sealing ring fitted in the groove is larger than the diameter of the fixing hole. A rubber nail with a diameter not larger than that of the ejector pin is fixedly installed at the end of the ejector pin rod away from the ejector pin handle.

[0012] Furthermore, the present invention also includes at least two guide rods fixedly connected to the frame and vertically arranged, and at least two corresponding guide sleeves fixedly arranged at intervals for the mold assembly and the ejector pin mounting plate, the guide sleeves sliding or rollingly sleeved on the guide rods, and the guide rods slidingly penetrating the support plate in tight fit.

[0013] Furthermore, the mold assembly includes a mold mounting plate and a mold. The mold is a plate-shaped structure and has a cavity that corresponds to the pre-reserved portion of the packaging box and extends through the top and bottom. The mold mounting plate is a frame-shaped plate and the inner cavity contour is larger than the cavity. The mold is fixedly mounted on the mold mounting plate. The mold mounting plate is also provided with a guide hole, and the guide sleeve is fixedly mounted in the guide hole.

[0014] The fully automatic waste removal machine for die-cutting packaging boxes of the present invention is implemented as follows: it includes the waste removal mechanism for die-cutting packaging boxes described in any of the preceding claims.

[0015] Furthermore, the present invention also includes a retrieval assembly, which includes a retrieval motor, a retrieval guide rail, a retrieval belt, a retrieval robot, and a lifting drive unit. The retrieval motor is fixedly mounted on the frame, the retrieval guide rail is horizontally fixedly mounted above the waste removal mechanism, the lifting drive unit is vertically mounted and slidably connected to the retrieval guide rail, the retrieval belt is fixedly connected to the lifting drive unit, the retrieval belt is sleeved on the drive wheel of the retrieval motor, the moving end of the lifting drive unit extends downward and is fixedly connected to the retrieval robot, and the retrieval robot has a comb-shaped support frame horizontally mounted.

[0016] Furthermore, the present invention also includes a fixed base and an auxiliary unit, wherein the fixed base is slidably connected to the object-retrieving guide rail, the lifting drive unit is fixedly mounted on the fixed base, and the object-retrieving robot is slidably connected to the fixed base;

[0017] The auxiliary unit includes an auxiliary fixing seat, a clamping cylinder, a pressure plate, and an adjusting cylinder. The auxiliary fixing seat is slidably connected to the picking guide rail and fixedly connected to the picking belt. The clamping cylinder is fixedly connected to the auxiliary fixing seat and the piston rod II extends vertically downward. The pressure plate is horizontally arranged above the mold assembly and fixedly connected to the piston rod II of the clamping cylinder. The adjusting cylinder is horizontally fixed on the auxiliary fixing seat and the piston rod III is fixedly connected to or hinged to the fixing seat.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention uses a mold assembly to press and position the die-cut products to be cleaned, ensuring consistent cleaning positions for all products and improving cleaning accuracy. It also avoids the problem of incorrect cleaning positions caused by movement of the die-cut products during the cleaning process. A drive motor rotates the lead screw, causing the nut to move the support frame. This allows the ejector pin assembly to move smoothly up and down under the support frame's influence. The motor-lead screw-nut structure of the lifting drive assembly is simple, and the smooth movement extends the service life of the ejector pin. Furthermore, the drive motor, connected to the servo control system of the cleaning machine, enables precise stroke control, effectively simplifying stroke control.

[0020] 2. This invention provides an ejector pin groove and ejector pin shank at the lower part of the ejector pin, and several mounting holes for the ejector pin shank to slide through on the ejector pin mounting plate. Furthermore, several slotted holes corresponding to the mounting holes on the ejector pin clamping plate are provided, with the length and width of the slotted holes matching the diameter and width of the ejector pin shank. This allows for the ejector pin to be fixed by loosening the ejector pin mounting plate and the ejector pin clamping plate, rotating the ejector pin to allow the ejector pin shank to pass through the slotted holes and insert into the mounting holes, then rotating the ejector pin again to restrict the axial freedom of the ejector pin shank, and finally tightening the ejector pin mounting plate and the ejector pin clamping plate. This not only enables independent replacement of the ejector pin as needed, effectively improving the efficiency and simplifying the replacement process, but also improves the positioning accuracy and stability of the ejector pin during use through the slotted hole limiting of the ejector pin clamping plate, the positioning of the mounting holes on the ejector pin mounting plate, and the clamping fixation of the two plates. This, in turn, improves the waste removal effect and extends the service life of the ejector pin.

[0021] 3. This invention features a fixed handle at the bottom of the ejector pin shank and a fixed hole at the lower end of the mounting hole on the ejector pin mounting plate, through which the fixed handle can slide. The cooperation between the fixed handle and the fixed hole guides the ejector rod inserted into the slot, preventing the ejector rod from tilting and affecting its smooth insertion and positioning. Specifically, a groove is provided around the fixed handle, and an elastic sealing ring is fitted with it. The outer diameter of the elastic sealing ring is larger than the diameter of the fixed hole. This creates damping between the guide rod and the fixed hole, preventing the guide rod from rotating on its own when the two plates are not clamped, thus preventing the slot from restricting the axial freedom of the guide rod. This effectively improves the reliability and positioning accuracy of the guide rod after replacement and further enhances its stability during use. Furthermore, a rubber nail is fixed to the end of the ejector pin away from the ejector pin shank. The elasticity of the rubber nail buffers the impact force on the ejector pin and increases friction with the cleaned product, preventing indentations and improving the surface quality of the cleaned product.

[0022] 4. The mold of the present invention is fixed by a mold mounting plate. It can adapt to the waste removal of different die-cut products by simply changing the mold as needed, thereby simplifying the structure and cost of the existing overall mold. Moreover, multiple identical or different molds can be installed at the same time to remove waste from multiple die-cut products simultaneously, which not only improves the waste removal efficiency, but also improves the adaptability of waste removal.

[0023] 5. This invention also includes a material-lifting component. A material-lifting motor drives a material-lifting belt, which in turn drives a lifting drive unit to slide horizontally. The lifting drive unit then drives a comb-shaped robotic arm to move up and down, enabling timely and reliable lifting of the cleaned finished product, lifted by the top rod, onto the subsequent palletizer feeding conveyor mechanism. This achieves automated waste removal and unloading operations. In particular, an auxiliary unit driven by a clamping cylinder is installed above the mold assembly, and an adjusting cylinder connects the auxiliary unit to the lifting drive unit. This auxiliary unit improves the reliability of waste removal and unloading.

[0024] In summary, the present invention features a compact structure, simple adjustment, quick needle replacement, and good waste removal effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the fully automatic waste removal machine of the present invention;

[0026] Figure 2 for Figure 1 Top left view;

[0027] Figure 3 for Figure 1 Longitudinal sectional view of the waste feed direction;

[0028] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0029] Figure 5 This is a schematic diagram of the waste removal mechanism of the present invention;

[0030] Figure 6 for Figure 5 The bottom right view;

[0031] Figure 7 for Figure 5 Top view;

[0032] Figure 8 for Figure 5 The front view;

[0033] Figure 9 for Figure 5 Exploded view;

[0034] Figure 10 for Figure 6 Exploded view;

[0035] Figure 11 for Figure 8 Exploded view;

[0036] Figure 12 This is a schematic diagram of the ejector pin structure of the present invention;

[0037] Figure 13 for Figure 2 A magnified view of a portion of the image;

[0038] In the diagram: 1-Frame, 2-Mold assembly, 21-Mold mounting plate, 22-Mold, 221-Cavity, 3-Mold drive unit, 4-Support plate, 41-Ejector hole, 5-Ejector assembly, 51-Ejector pin, 511-Ejector rod, 512-Ejector groove, 513-Ejector handle, 514-Fixing handle, 52-Ejector clamping plate, 521-Waist hole, 53-Ejector mounting plate, 531-Mounting hole, 532-Fixing hole, 54-Elastic sealing ring, 55-Glue pin, 6-Ejector drive assembly, 61-Screw, 62-Driver 63-Driven motor, 64-Nut, 65-Support frame, 66-Bearing seat, 7-Guide rod, 8-Guide sleeve, 9-Collecting assembly, 91-Collecting motor, 92-Collecting guide rail, 93-Collecting belt, 94-Collecting robot, 941-Shelf, 95-Lifting drive unit, 96-Fixed seat, 97-Auxiliary unit, 971-Auxiliary fixed seat, 972-Pressure cylinder, 973-Pressure plate, 974-Adjusting cylinder, 1A-Propulsion mechanism, 1B-Waste conveyor belt, 1C-Waste bin, 1D-Feeding roller. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] like Figures 1 to 13 As shown, the packaging box die-cutting and waste removal mechanism of the present invention includes a frame 1, a mold assembly 2, a mold drive unit 3, a support plate 4, an ejector pin assembly 5, and a lifting drive assembly 6. The mold assembly 2 is slidably disposed on the upper part of the frame 1. The mold drive unit 3 is fixedly disposed on the frame 1 and its drive end is connected to the mold assembly 2 to drive the mold assembly 2 to slide up and down. The support plate 4 is placed parallel to the mold assembly 2 and is fixedly connected to the frame 1. The support plate 4 is provided with a plurality of ejector pin holes 41 that pass through it vertically. The ejector pin assembly 5 is slidably connected to the frame 1 and disposed below the support plate 4. The lifting drive assembly 6 is connected to the frame 1 and its drive end is connected to the ejector pin assembly 5 to drive the ejector pin assembly 5 to slide up and down. The ejector pin assembly 5 is detachably provided with a plurality of ejector pins 51 that can slide through the ejector pin holes 41.

[0041] The lifting drive assembly 6 includes a lead screw 61, a drive motor 62, a driven wheel 63, a nut 64, a support frame 65, and a bearing seat 66. The lead screw 61 is vertically arranged and supported at both ends by the bearing seats 66. The drive motor 62 and the bearing seats 66 are fixedly connected to the frame 1. The driven wheel 63 is coaxially fixedly connected to the lead screw 61. The drive shaft of the drive motor 62 is fixedly connected to a drive wheel. The driven wheel 63 is connected to the drive wheel. The nut 64 is threadedly sleeved on the lead screw 61 and fixedly connected to the support frame 65. The top of the support frame 65 is connected to the lower part of the ejector pin assembly 5.

[0042] The driven wheel 63 is connected to the driving wheel by meshing of wheel teeth or by a synchronous belt or chain.

[0043] The ejector pin assembly 5 further includes an ejector pin clamping plate 52 and an ejector pin mounting plate 53. The ejector pin 51 includes an ejector pin rod 511, an ejector pin groove 512, and an ejector pin handle 513. The ejector pin rod 511 is cylindrical. The ejector pin groove 512 is circumferentially arranged at the lower part of the ejector pin rod 511. The ejector pin handle 513 has a waist-shaped cross-section. The ejector pin mounting plate 53 is placed parallel to each other and is provided with a plurality of mounting holes 531 that can slide through the ejector pin handle 513 and fit tightly. The ejector pin clamping plate 52 is fixedly installed on the top of the ejector pin mounting plate 53. The ejector pin clamping plate 52 is provided with a plurality of waist holes 521 corresponding to the mounting holes 531 of the ejector pin mounting plate 53. The length of the waist hole 521 is greater than the diameter of the ejector pin handle 513, and the width of the waist hole 521 is greater than the width of the ejector pin handle 513 and less than the diameter of the ejector pin handle 513. The top end of the support frame 65 is fixedly connected or hinged to the lower part of the ejector pin mounting plate 53.

[0044] The outer diameter of the waist-shaped structure of the ejector pin shank 513 is not less than the inner diameter of the ejector pin groove 512, the width of the waist hole 521 is greater than the diameter of the ejector pin groove 512 and the width of the waist-shaped structure of the ejector pin shank 513, and the axial length of the ejector pin groove 512 is not less than the depth of the waist hole 521.

[0045] The ejector pin 51 is further provided with a fixing handle 514 at the bottom end of the ejector pin handle 513. The fixing handle 514 is a cylinder and its diameter is not greater than the width of the waist-shaped structure of the ejector pin handle 513. The ejector pin mounting plate 53 is further provided with a fixing hole 532 at the lower end of the mounting hole 531. The fixing handle 514 slides into the fixing hole 532. The axial length of the ejector pin handle 513 is not greater than the depth of the mounting hole 531.

[0046] The outer surface of the fixing handle 514 is provided with a circumferentially surrounding groove, and an elastic sealing ring 54 is fitted in the groove. The outer diameter of the elastic sealing ring 54 fitted in the groove is larger than the diameter of the fixing hole 532. A rubber nail 55 with a diameter not larger than that of the ejector rod 511 is fixedly provided at the end of the ejector rod 511 away from the ejector handle 513.

[0047] The present invention also includes at least two guide rods 7 fixedly connected to the frame 1 and vertically arranged. The mold assembly 2 and the ejector pin mounting plate 53 are respectively fixedly provided with at least two corresponding guide sleeves 8 at intervals. The guide sleeves 8 are slidably or rollingly sleeved on the guide rods 7, and the guide rods 7 are tightly fitted to the sliding through support plate 4.

[0048] The mold assembly 2 includes a mold mounting plate 21 and a mold 22. The mold 22 is a plate-shaped structure and has a cavity 221 that corresponds to the pre-reserved part of the packaging box and extends through it from top to bottom. The mold mounting plate 21 is a frame-shaped plate and the inner cavity contour is larger than the cavity 221. The mold 22 is fixedly mounted on the mold mounting plate 21. The mold mounting plate 21 is also provided with a guide hole, and the guide sleeve 8 is fixedly mounted in the guide hole.

[0049] The mold driving unit 3 is a pneumatic cylinder or a hydraulic cylinder, and the piston rod I of the mold driving unit 3 is connected to the mold mounting plate 21.

[0050] like Figure 1 , 2 As shown in Figures 3 and 13, the fully automatic waste removal machine for die-cutting packaging boxes of the present invention includes the waste removal mechanism for die-cutting packaging boxes described in any of the preceding figures.

[0051] The present invention also includes a retrieval component 9, which includes a retrieval motor 91, a retrieval guide rail 92, a retrieval belt 93, a retrieval robot arm 94, and a lifting drive unit 95. The retrieval motor 91 is fixedly mounted on the frame 1. The retrieval guide rail 92 is horizontally fixed above the waste removal mechanism. The lifting drive unit 95 is vertically mounted and slidably connected to the retrieval guide rail 92. The retrieval belt 93 is fixedly connected to the lifting drive unit 95 and is sleeved on the drive wheel of the retrieval motor 91. The moving end of the lifting drive unit 95 extends downward and is fixedly connected to the retrieval robot arm 94. The retrieval robot arm 94 is horizontally mounted with a comb-shaped support frame 941.

[0052] The present invention also includes a fixed base 96 and an auxiliary unit 97. The fixed base 96 is slidably connected to the object-retrieving guide rail 92, the lifting drive unit 95 is fixedly mounted on the fixed base 96, and the object-retrieving robot 94 is slidably connected to the fixed base 96.

[0053] The auxiliary unit 97 includes an auxiliary fixing seat 971, a pressing cylinder 972, a pressure plate 973, and an adjusting cylinder 974. The auxiliary fixing seat 971 is slidably connected to the picking guide rail 92 and fixedly connected to the picking belt 93. The pressing cylinder 972 is fixedly connected to the auxiliary fixing seat 971 and the piston rod II extends vertically downward. The pressure plate 973 is horizontally arranged above the mold assembly 2 and fixedly connected to the piston rod II of the pressing cylinder 972. The adjusting cylinder 974 is horizontally fixed on the auxiliary fixing seat 971 and the piston rod III is fixedly connected to or hinged to the fixing seat 96.

[0054] Working principle and process of this invention:

[0055] like Figures 1 to 13 As shown, before waste removal, prepare mold 22 according to the shape of the die-cut product to be removed, and then install the corresponding mold 22 on the mold mounting plate 21. Then, according to the shape of the finished product to be retained, first loosen the ejector clamping plate 52 and the ejector mounting plate 53. Then, insert the ejector pin 51 into the waist hole 521 of the ejector clamping plate 52 where the ejector pin 51 needs to be added: first rotate the ejector pin 51 so that the ejector pin shank 513 passes through the waist hole 521. The fixing handle 514 is inserted into the mounting hole 531 of the ejector mounting plate 53. Then, the ejector 51 is rotated 90° again to make the ejector handle 513 misaligned with the waist hole 521 to restrict the axial freedom of the ejector handle 513. Then, the ejector 51 to be removed is rotated to separate it from the ejector clamping plate 52 and the ejector mounting plate 53. Finally, the ejector mounting plate 53 and the ejector clamping plate 52 are tightened to clamp each ejector 51, thus completing the removal and fixing of the ejector 51.

[0056] During waste removal, the die-cut products to be removed are first neatly stacked on the table of the pushing mechanism 1A. Then, the waste removal machine is started, and the pushing mechanism 1A sends the die-cut products to be removed on the table to the support plate 4 of the waste removal mechanism. Subsequently, the cylinder I (i.e., the mold drive unit 3) of the waste removal mechanism is started, which drives the mold mounting plate 21 and the mold 22 to move downward along the guide rod 7. The mold 22 presses the waste part of the die-cut products to be removed. Then, the drive motor 62 is started, which drives the lead screw 61 to rotate through the driven wheel 63. The rotating lead screw 61 drives the ejector assembly 5 to move upward along the guide rod 7 through the nut 64 and the support frame 65. The ejector pins 51 on the upward-moving ejector assembly 5 pass through the corresponding ejector pin holes 41 on the support plate 4, lifting the remaining part of the die-cut products to be removed, thus completing the separation of the waste from the finished products.

[0057] During discharge, after the waste material is separated from the finished product, the regulating cylinder 974 is activated to move the comb-shaped picking robot 94 to below the finished product after waste removal. Then, the cylinder II (i.e., the lifting drive unit 95) is activated to lift the finished product after waste removal through the picking robot 94. Subsequently, the picking motor 91 is activated to drive the fixed seat 96 to slide along the picking guide rail 92 via the synchronous belt (i.e., the picking belt 93). The sliding picking guide rail 92 drives the cylinder II to drag the auxiliary fixed seat 971 to slide along the picking guide rail 92, and drives the picking robot 94 and the finished product on it to the feeding roller 1D of the stacking mechanism. Finally, the stacking mechanism completes the stacking of the finished product. After the waste product is lifted upwards, the drive motor 62 reverses to drive the ejector pin assembly 5 to move downwards. At the same time, the cylinder I drives the mold mounting plate 21 and the mold 22 to move upwards along the guide rod 7, leaving the waste on the support plate 4. Then, the pushing mechanism 1A pushes the next stack of waste-to-be-cleaned die-cut products into the support plate 4. When the next stack of waste-to-be-cleaned die-cut products is pushed in, the waste is pushed away from the support plate 4 and enters the waste conveyor belt 1B and finally falls into the waste bin 1C. Then, the above process is repeated to complete the waste removal of the next stack of waste-to-be-cleaned die-cut products.

[0058] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A packaging box die cutting and waste removing mechanism comprising a frame (1), characterized in that Also include mold assembly (2), mold driving unit (3), support plate (4), ejector pin assembly (5), lift driving assembly (6), the mold assembly (2) is slidably arranged on the upper portion of the rack (1), the mold driving unit (3) is fixedly arranged on the rack (1) and the driving end is connected with the mold assembly (2) to drive the mold assembly (2) to slide up and down, the support plate (4) is placed in parallel below the mold assembly (2) and is fixedly connected with the rack (1), a plurality of ejector pin holes (41) are provided through the support plate (4) up and down, the ejector pin assembly (5) is slidably connected with the rack (1) and is arranged below the support plate (4), the lift driving assembly (6) is connected with the rack (1) and the driving end is connected with the ejector pin assembly (5) to drive the ejector pin assembly (5) to slide up and down, a plurality of ejector pins (51) which can be slidably passed through the ejector pin holes (41) are detachably provided on the ejector pin assembly (5); The lift driving assembly (6) includes a lead screw (61), a driving motor (62), a driven wheel (63), a nut (64), a support frame (65) and a bearing seat (66). The lead screw (61) is vertically arranged and both ends are supported by the bearing seat (66). The driving motor (62) and the bearing seat (66) are fixedly connected with the rack (1). The driven wheel (63) is coaxially fixedly connected with the lead screw (61). A driving shaft of the driving motor (62) is fixedly connected with a driving wheel. The driven wheel (63) is connected with the driving wheel. The nut (64) is threadedly engaged on the lead screw (61) and is fixedly connected with the support frame (65). The top end of the support frame (65) is connected with the lower part of the ejector pin assembly (5). The ejector pin assembly (5) further includes an ejector pin clamping plate (52) and an ejector pin mounting plate (53). The ejector pin (51) includes an ejector pin rod (511), an ejector pin groove (512) and an ejector pin handle (513). The ejector pin rod (511) is a cylinder. The ejector pin groove (512) is circumferentially arranged at the lower part of the ejector pin rod (511). The ejector pin handle (513) has a waist-shaped structure in cross section. The ejector pin mounting plate (53) is placed in parallel and is provided with a plurality of mounting holes (531) which can be slidably penetrated into the ejector pin handle (513) and are tightly fitted. The ejector pin clamping plate (52) is fixedly mounted on the top of the ejector pin mounting plate (53). The ejector pin clamping plate (52) is provided with a plurality of waist holes (521) corresponding to the mounting holes (531) of the ejector pin mounting plate (53). The length of the waist hole (521) is greater than the diameter of the ejector pin handle (513). The width of the waist hole (521) is greater than the width of the ejector pin handle (513) and less than the diameter of the ejector pin handle (513). The top end of the support frame (65) is fixedly connected or hingedly connected with the lower part of the ejector pin mounting plate (53).

2. The package die cutting and waste stripping mechanism of claim 1, wherein The diameter of the circumscribed circle of the waist-shaped structure of the ejector pin handle (513) is greater than the inner diameter of the ejector pin groove (512). The width of the waist hole (521) is not less than the diameter of the ejector pin groove (512) and the width of the waist-shaped structure of the ejector pin handle (513). The axial length of the ejector pin groove (512) is not less than the depth of the waist hole (521).

3. The package die cutting and waste stripping mechanism of claim 2, wherein The top pin (51) is further provided with a fixed handle (514) at the bottom end of the top pin handle (513), the fixed handle (514) is a cylinder and the diameter is not greater than the width of the waist-shaped structure of the top pin handle (513), the top pin mounting plate (53) is further provided with a fixed hole (532) at the lower end of the mounting hole (531), the fixed handle (514) slides into the fixed hole (532), and the axial length of the top pin handle (513) is not greater than the depth of the mounting hole (531).

4. The package die cutting and waste stripping mechanism of claim 3, wherein The outer cylindrical surface of the fixed handle (514) is provided with a circumferentially surrounding groove, the groove is sleeved with an elastic sealing ring (54), the outer diameter of the elastic sealing ring (54) sleeved in the groove is greater than the diameter of the fixed hole (532); and the end of the top pin rod (511) away from the top pin handle (513) is fixedly provided with a rubber nail (55) with a diameter not greater than that of the top pin rod (511).

5. The packaging die cutting and waste removing mechanism according to any one of claims 1 to 4, characterized in that Further comprising at least two guide rods (7) fixedly connected with the rack (1) and vertically arranged, the mold assembly (2) and the top pin mounting plate (53) are respectively and at least interval fixedly provided with two corresponding guide sleeves (8), the guide sleeves (8) are slidably or rollingly sleeved on the guide rods (7), and the guide rods (7) are tightly and slidably penetrated through the support plate (4).

6. The package die cutting and waste stripping mechanism of claim 5, wherein The mold assembly (2) comprises a mold mounting plate (21) and a mold (22), the mold (22) is a plate-shaped structure and is provided with a cavity (221) corresponding to the pre-reserved part of the packaging box and penetrating upward and downward, the mold mounting plate (21) is a frame-shaped plate and the inner cavity profile is greater than that of the cavity (221), the mold (22) is fixedly arranged on the mold mounting plate (21), and the mold mounting plate (21) is further provided with a guide hole, and the guide sleeve (8) is fixedly arranged in the guide hole.

7. A full-automatic waste removing machine for die cutting of a carton box, characterized in that The packaging box die cutting and waste removing mechanism comprises the packaging box die cutting and waste removing mechanism according to any one of claims 1 to 6.

8. The full-automatic waste removing machine for die cutting of the packaging box according to claim 7, characterized in that Further comprising a taking assembly (9), the taking assembly (9) comprises a taking motor (91), a taking guide rail (92), a taking belt (93), a taking manipulator (94) and a lifting driving unit (95), the taking motor (91) is fixedly arranged on the rack (1), the taking guide rail (92) is horizontally fixedly arranged above the waste removing mechanism, the lifting driving unit (95) is vertically arranged and slidably connected with the taking guide rail (92), the taking belt (93) is fixedly connected with the lifting driving unit (95), the taking belt (93) is sleeved on the driving wheel of the taking motor (91), the moving end of the lifting driving unit (95) extends downward and is fixedly connected with the taking manipulator (94), and the taking manipulator (94) is horizontally provided with a comb-shaped object supporting frame (941).

9. The full-automatic waste removing machine for die cutting of the packaging box according to claim 8, characterized in that Further comprising a fixed seat (96) and an auxiliary unit (97), the fixed seat (96) is slidably connected with the taking guide rail (92), the lifting driving unit (95) is fixedly arranged on the fixed seat (96), and the taking manipulator (94) is slidably connected with the fixed seat (96). The auxiliary unit (97) comprises an auxiliary fixing seat (971), a pressing cylinder (972), a pressing plate (973) and an adjusting cylinder (974), the auxiliary fixing seat (971) is in sliding connection with the taking guide rail (92) and in fixed connection with the taking belt (93), the pressing cylinder (972) is in fixed connection with the auxiliary fixing seat (971) and the piston rod II vertically extends downward, the pressing plate (973) is horizontally arranged above the mold assembly (2) and in fixed connection with the piston rod II of the pressing cylinder (972), and the adjusting cylinder (974) is horizontally fixed on the auxiliary fixing seat (971) and the piston rod III is in fixed connection or hinged connection with the fixing seat (96).

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