Lifting drive clamping mechanism and clamping method thereof

Abstract

The invention discloses a lifting type driven mold locking mechanism and a mold locking method thereof, which are used to lock the moving mold on the fixed mold, and include two groups of mold locking tie rods, two mold locking pull blocks, two groups of tie rod driving components and two groups of tie rod locking components located on both sides of the fixed mold, the tie rod driving components include ball screws and servo motors, one end of each group of mold locking tie rods is connected through a mold locking pull block, the other end of the mold locking tie rods passes through the fixed mold and the moving mold in turn and is connected to the tie rod locking component, one end of the ball screw is connected to the mold locking pull block, the other end of the ball screw passes through the fixed mold and is exposed outside the fixed mold, the moving mold is provided with a screw rod throughhole matching the ball screw, and the servo motor is connected to the ball nut of the ball screw. The invention can realize fast mold locking, low failure rate, low maintenance cost, cancel the hydraulic power component, there is no insufficient pressure holding and oil leakage, can prevent the workshop environment and the equipment working environment from being polluted, and has fast power transmission, high mold locking efficiency, and improves production efficiency.

Description

Technical Field

[0001] The invention relates to a component of a foaming machine, and in particular to a lifting type driving mold locking mechanism and a mold locking method thereof. Background Art

[0002] The mold locking mechanism is an essential mechanism for locking the shifting mold on the fixed mold in the foam molding machine. Conventional shifting mold locking mechanisms usually use hydraulic power components to tighten or push the shifting mold. This structure is greatly affected by the hydraulic power components, which have a high failure rate and high maintenance costs. At the same time, the use of a hydraulic mold locking structure often causes problems with the machine's mold locking pressure not maintaining pressure, and is prone to oil leakage, causing oil pollution in the workshop. In addition, the hydraulically driven mold locking stops directly when it reaches the position and cannot be adjusted by itself, which will cause unstable feeding position due to accumulated errors, wear of the machine guide rods and wear of the oil cylinder. In addition, the power transmission of the hydraulic power component is relatively slow, which affects the mold locking speed and reduces production efficiency. Summary of the invention

[0003] In order to solve the defects and shortcomings in the above-mentioned prior art, the present invention provides a method of locking the mold locking rod after lifting the pull rod locking assembly driven by a driving cylinder, and quickly tightening the mold locking rod by driving the ball screw through a servo motor, so as to achieve fast and stable mold locking, which not only has a low failure rate and low maintenance cost, but also eliminates the hydraulic power component, does not have insufficient pressure holding and oil leakage, and can prevent the workshop environment and the equipment working environment from being polluted. In addition, the servo motor drives the ball screw to automatically adjust the position of the mold moving into place according to the actual situation, so that the feeding control has high accuracy, the servo motor has low power, and the mold locking force is large and stable, so that the mold moving is smooth and has a long service life, and the power transmission is fast, thereby ensuring the mold locking efficiency, thereby improving the production efficiency of the lifting-type driven mold moving mechanism and its mold locking method.

[0004] The technical solution of the present invention is as follows: a lifting-type driven locking mechanism is used to lock the moving mold on the fixed mold, including two groups of locking rods located on both sides of the fixed mold, two locking pull blocks cooperating with the locking rods, two groups of pull rod driving assemblies driving the locking rods and two groups of pull rod locking assemblies cooperating with the locking rods, the pull rod driving assembly includes a ball screw and a servo motor driving the ball screw, one end of each group of locking rods is connected through a locking pull block, and the other end of the locking rod passes through the fixed mold and the moving mold in turn and is connected to the pull rod locking assembly, one end of the ball screw is connected to the locking pull block, and the other end of the ball screw passes through the fixed mold and is exposed outside the solid mold, a screw through hole cooperating with the ball screw is provided on the moving mold, and the servo motor is connected to the ball nut of the ball screw.

[0005] The present invention adopts a driving cylinder to drive the rod locking assembly to lock the locking rod after lifting, and drives the ball screw through the servo motor to quickly tighten the locking rod, so as to achieve fast and stable locking. It not only has a low failure rate and low maintenance cost, but also eliminates the hydraulic power component, does not have insufficient pressure holding and oil leakage, and can prevent the workshop environment and the equipment working environment from being polluted. In addition, the servo motor drives the ball screw to automatically adjust the position of the mold transfer according to the actual situation, so that the feeding control is high in precision, the servo motor has low power, and the locking force is large and stable, so that the mold transfer is smooth and has a long service life, and the power transmission is fast, so the locking efficiency is ensured, thereby improving the production efficiency.

[0006] Preferably, each group of tie rod locking assemblies comprises at least one tie rod locking slide plate, at least one slide plate pad and at least one driving cylinder for driving the tie rod locking slide plate to slide on the slide plate pad, the tie rod locking slide plate is provided with tie rod through holes and tie rod locking holes which are interconnected, the end of the locking tie rod is provided with a tie rod locking groove which matches the tie rod locking hole, and the width of the tie rod locking hole is smaller than the diameter of the locking tie rod.

[0007] This structure can ensure the locking effect of the tie rod locking assembly on the mold locking tie rod, thereby ensuring that the servo motor and the ball screw can better tighten the mold locking tie rod, further ensuring its mold locking effect.

[0008] Preferably, each group of mold locking tie rods is divided into an upper mold locking tie rod and a lower mold locking tie rod, each mold locking tie rod corresponds to a tie rod locking slide plate and a slide plate pad, and the two tie rod locking slide plates are driven by a common driving cylinder.

[0009] This structure further ensures the locking effect on the clamping rod, and has a simple structure and reliable locking.

[0010] Preferably, the two tie rod locking slides are divided into an upper tie rod locking slide for cooperating with the upper locking tie rod and a lower tie rod locking slide for cooperating with the lower locking tie rod, and the two slide plate pads are divided into an upper slide plate pad for cooperating with the upper tie rod locking slide and a lower slide plate pad for cooperating with the lower tie rod locking slide. An upper connecting plate is provided at the lower end of the upper slide plate pad, and a lower connecting plate is provided at the upper end of the lower slide plate pad. The two connecting plates are connected by two connecting rods, and the end of the piston rod of the driving cylinder is connected to the lower side of the upper connecting plate or to the upper side of the lower connecting plate.

[0011] This structure ensures that the linkage between the upper pull rod locking slide plate and the lower pull rod locking slide plate is more stable and reliable.

[0012] Preferably, upper skateboard limit blocks cooperating with the upper pull rod locking skateboard are provided on both sides of the upper skateboard pad, lower skateboard limit blocks cooperating with the lower pull rod locking skateboard are provided on both sides of the lower skateboard pad, an upper wear-resistant plate is provided between the upper pull rod locking skateboard and the upper skateboard pad, and a lower wear-resistant plate is provided between the lower pull rod locking skateboard and the lower skateboard pad.

[0013] This structure ensures that the upper pull rod locking slide plate slides more smoothly and reliably on the upper slide plate pad, and ensures that the lower pull rod locking slide plate slides more smoothly and reliably on the lower slide plate pad.

[0014] Preferably, the motor shaft of the servo motor is connected to the ball nut through a gear box, the gear box is installed on the fixed mold away from the mold transfer side through a gear transmission box, and one end of the ball screw is connected to the middle of the locking pull block through a screw seat.

[0015] This structure ensures that the servo motor drives the ball screw to move more smoothly and reliably.

[0016] Preferably, the upper end of the locking block is provided with an upper mounting elbow matching the upper locking rod, and the lower end of the locking block is provided with a lower mounting elbow matching the lower locking rod, one end of the upper locking rod passes through the upper mounting elbow and is locked by a locking nut, and one end of the lower locking rod passes through the lower mounting elbow and is locked by a locking nut.

[0017] This structure ensures that one end of each clamping tie rod is installed firmly and reliably, thereby further ensuring the tightening and clamping effect of the clamping tie rod.

[0018] Preferably, the driving cylinder is fixed on the transfer mold away from the fixed mold side through a cylinder frame, the piston rod of the driving cylinder faces downward, the end of the piston rod is connected to the middle of the lower linkage plate, and a proximity switch is provided on one side of the driving cylinder.

[0019] This structure ensures that the driving cylinder is installed firmly and reliably, and at the same time ensures that the action of the driving cylinder is timely and reliable.

[0020] A clamping method of a lifting-type driven clamping mechanism, the steps are as follows:

[0021] 1) When the mold transfer is moved to the specified position, each mold locking tie rod passes through the mold transfer and then passes through the tie rod through-hole of the corresponding tie rod locking slide plate, and the position of the tie rod locking groove on the mold locking tie rod is aligned with the position of the tie rod locking hole;

[0022] 2) The driving cylinder receives the command to drive the tie rod locking slide plate to slide down, so that the tie rod groove on the clamping tie rod is inserted into the tie rod locking hole;

[0023] 3) Then the servo motor starts to drive the ball nut to rotate, so that the ball screw drives the clamping pull block to move away from the fixed mold, tightening the corresponding clamping pull rod, so that the transfer mold is firmly locked on the fixed mold.

[0024] The present invention adopts a driving cylinder to drive the rod locking assembly to lock the locking rod after lifting, and drives the ball screw through the servo motor to quickly tighten the locking rod, so as to achieve fast and stable locking. It not only has a low failure rate and low maintenance cost, but also eliminates the hydraulic power component, does not have insufficient pressure holding and oil leakage, and can prevent the workshop environment and the equipment working environment from being polluted. In addition, the servo motor drives the ball screw to automatically adjust the position of the mold transfer according to the actual situation, so that the feeding control is high in precision, the servo motor has low power, and the locking force is large and stable, so that the mold transfer is smooth and has a long service life, and the power transmission is fast, so the locking efficiency is ensured, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of one angle of the present invention;

[0026] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the upper clamping tie rod and the lower clamping tie rod in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the pull rod locking assembly in the present invention;

[0029] In the figure, 1. mold transfer, 2. ball screw, 3. ball nut, 4. servo motor, 5. mold fixing, 6. driving cylinder, 7. mold locking pull block, 8. screw seat, 9. gear box, 10. screw rod perforation, 11. upper mold locking pull rod, 12. lower mold locking pull rod, 13. upper pull rod locking slide plate, 14. lower pull rod locking slide plate, 15. upper slide plate pad, 16. lower slide plate pad, 17. upper slide plate limit block, 18. lower slide plate limit block, 19. upper wear-resistant plate, 20. lower wear-resistant plate, 21. upper linkage plate, 22. lower linkage plate, 23. pull rod perforation, 24. pull rod locking hole, 25. pull rod locking groove, 26. connecting rod, 27. cylinder frame, 28. upper mounting elbow, 29. lower mounting elbow, 30. proximity switch. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings, but this does not limit the protection scope of the present invention.

[0031] like Figure 1-4As shown, a lifting-type driven clamping mechanism is used to lock the movable mold 1 on the fixed mold 5, which includes two groups of clamping rods located on both sides of the fixed mold 5, two clamping pull blocks 7 cooperating with the clamping rods, two groups of pull rod driving components for driving the clamping rods and two groups of pull rod locking components cooperating with the clamping rods, the pull rod driving component includes a ball screw 2 and a servo motor 4 for driving the ball screw 2, one end of each group of clamping rods is connected through a clamping pull block 7, the other end of the clamping rod 7 passes through the fixed mold 5 and the movable mold 1 in turn and is connected to the pull rod locking component, one end of the ball screw 2 is connected to the clamping pull block 7, the other end of the ball screw 2 passes through the fixed mold 5 and is exposed outside the fixed mold 5, a screw through hole 10 cooperating with the ball screw 2 is provided on the movable mold 1, and the servo motor 4 is connected to the ball nut 3 of the ball screw 2. Each set of tie rod locking components includes two tie rod locking slide plates, two slide plate pads and a driving cylinder 6 for driving the tie rod locking slide plate to slide on the slide plate pads. The tie rod locking slide plate is provided with a tie rod through hole 23 and a tie rod locking hole 24 that are interconnected. The end of the clamping tie rod is provided with a tie rod locking groove 25 that matches the tie rod locking hole 24. The width of the tie rod locking hole 24 is smaller than the diameter of the clamping tie rod. Each set of clamping tie rods is divided into an upper clamping tie rod 11 and a lower clamping tie rod 12. Each clamping tie rod corresponds to a tie rod locking slide plate and a slide plate pad, and the two tie rod locking slide plates are driven by a common driving cylinder. The two tie rod locking slides are divided into an upper tie rod locking slide 13 cooperating with the upper clamping tie rod 11 and a lower tie rod locking slide 14 cooperating with the lower locking tie rod 12, and the two slide plate pads are divided into an upper slide plate pad 15 cooperating with the upper tie rod locking slide 13 and a lower slide plate pad 16 cooperating with the lower tie rod locking slide 14. An upper connecting plate 21 is provided at the lower end of the upper slide plate pad 15, and a lower connecting plate 22 is provided at the upper end of the lower slide plate pad 16. The two connecting plates are connected by two connecting rods 26, and the piston rod end of the driving cylinder 6 is connected to the upper side of the lower connecting plate 22. The upper slide plate pad 15 is provided with upper slide limit blocks 17 for matching the upper pull rod locking slide plate 13 on both sides, and the lower slide plate pad 16 is provided with lower slide limit blocks 18 for matching the lower pull rod locking slide plate 14 on both sides, and an upper wear-resistant plate 19 is provided between the upper pull rod locking slide plate 13 and the upper slide plate pad 15, and a lower wear-resistant plate 20 is provided between the lower pull rod locking slide plate 14 and the lower slide plate pad 16. The motor shaft of the servo motor 4 is connected to the ball nut 3 through a gear box 9, and the box body of the gear box 9 is installed on the fixed mold 5 away from the side of the moving mold 1, and one end of the ball screw 2 is connected to the middle of the locking mold pull block 7 through the screw seat 8. The upper end of the locking block 7 is provided with an upper mounting elbow 28 that matches the upper locking rod 11, and the lower end of the locking block 7 is provided with a lower mounting elbow 29 that matches the lower locking rod 12. One end of the upper locking rod 11 passes through the upper mounting elbow 28 and is locked by a locking nut, and one end of the lower locking rod 12 passes through the lower mounting elbow 29 and is locked by a locking nut.The driving cylinder 6 is fixed on the transfer mold 1 away from the fixed mold 5 through a cylinder frame 27. The piston rod of the driving cylinder 6 faces downward, and the end of the piston rod is connected to the middle of the lower linkage plate 22. A proximity switch 30 is provided on one side of the driving cylinder 6.

[0032] A clamping method of a lifting-type driven clamping mechanism, the steps are as follows:

[0033] 1) When the mold transfer is moved to the specified position, each mold locking tie rod passes through the mold transfer and then passes through the tie rod through-hole of the corresponding tie rod locking slide plate, and the position of the tie rod locking groove on the mold locking tie rod is aligned with the position of the tie rod locking hole;

[0034] 2) The driving cylinder receives the command to drive the tie rod locking slide plate to slide down, so that the tie rod groove on the clamping tie rod is inserted into the tie rod locking hole;

[0035] 3) Then the servo motor starts to drive the ball nut to rotate, so that the ball screw drives the clamping pull block to move away from the fixed mold, tightening the corresponding clamping pull rod, so that the transfer mold is firmly locked on the fixed mold.

[0036] The servo motor, ball screw, gear box, drive cylinder and proximity switch in the present invention are all conventional components purchased on the market, and their specific structures and working processes are conventional means, so they are not described in detail.

[0037] A pair of direction-changing gears in the gear box are respectively connected to the motor shaft and the ball nut of the servo motor to transmit the power of the servo motor to the ball nut.

[0038] The present invention adopts a driving cylinder to drive the rod locking assembly to lock the locking rod after lifting, and drives the ball screw through the servo motor to quickly tighten the locking rod, so as to achieve fast and stable locking. It not only has a low failure rate and low maintenance cost, but also eliminates the hydraulic power component, does not have insufficient pressure holding and oil leakage, and can prevent the workshop environment and the equipment working environment from being polluted. In addition, the servo motor drives the ball screw to automatically adjust the position of the mold transfer according to the actual situation, so that the feeding control is high in precision, the servo motor has low power, and the locking force is large and stable, so that the mold transfer is smooth and has a long service life, and the power transmission is fast, so the locking efficiency is ensured, thereby improving the production efficiency.

Claims

1. A lifting drive clamping mechanism for locking the transfer mold on the fixed mold, characterized in that: It includes two sets of mold locking rods located on both sides of the solid mold, two mold locking pull blocks matching the mold locking rods, two sets of pull rod driving components for driving the mold locking rods, and two sets of pull rod locking components matching the mold locking rods. The pull rod driving components include ball screws and servo motors that drive the ball screws. One end of each set of mold locking rods is connected through a mold locking pull block, and the other end of the mold locking rod passes through the solid mold and the moving mold in turn and is connected to the pull rod locking component. One end of the ball screw is connected to the mold locking pull block, and the other end of the ball screw passes through the After the mold is fixed, it is exposed outside the mold. A screw through hole matching the ball screw is provided on the moving mold. The servo motor is connected to the ball nut of the ball screw. Each group of tie rod locking components includes at least one tie rod locking slide plate, at least one slide plate pad and at least one driving cylinder driving the tie rod locking slide plate to slide on the slide plate pad. The tie rod locking slide plate is provided with a tie rod through hole and a tie rod locking hole that are interconnected. The end of the clamping tie rod is provided with a tie rod locking groove matching the tie rod locking hole. The width of the tie rod locking hole is smaller than the diameter of the clamping tie rod. Each set of clamping tie rods is divided into an upper clamping tie rod and a lower clamping tie rod. Each clamping tie rod corresponds to a tie rod locking slide plate and a slide plate pad, and the two tie rod locking slide plates share a driving cylinder for driving; The two tie rod locking slides are divided into an upper tie rod locking slide for cooperating with the upper mold clamping tie rod and a lower tie rod locking slide for cooperating with the lower locking tie rod, and the two slide plate pads are divided into an upper slide plate pad for cooperating with the upper tie rod locking slide and a lower slide plate pad for cooperating with the lower tie rod locking slide. An upper linkage plate is provided at the lower end of the upper slide plate pad, and a lower linkage plate is provided at the upper end of the lower slide plate pad. The two linkage plates are connected by two connecting rods, and the piston rod end of the driving cylinder is connected to the lower side of the upper linkage plate or the upper side of the lower linkage plate. The upper slide plate pad is provided with upper slide limit blocks matching the upper pull rod locking slide plate on both sides, the lower slide plate pad is provided with lower slide limit blocks matching the lower pull rod locking slide plate on both sides, an upper wear-resistant plate is provided between the upper pull rod locking slide plate and the upper slide plate pad, and a lower wear-resistant plate is provided between the lower pull rod locking slide plate and the lower slide plate pad; The motor shaft of the servo motor is connected to the ball nut through a gear box, the gear box body is installed on the fixed mold away from the mold transfer side, and one end of the ball screw is connected to the middle of the clamping pull block through a screw seat.

2. The lifting type driven clamping mechanism according to claim 1, characterized in that: The upper end of the locking block is provided with an upper mounting elbow that matches the upper locking rod, and the lower end of the locking block is provided with a lower mounting elbow that matches the lower locking rod. One end of the upper locking rod passes through the upper mounting elbow and is locked by a locking nut, and one end of the lower locking rod passes through the lower mounting elbow and is locked by a locking nut.

3. The lifting drive clamping mechanism according to claim 1, characterized in that: The driving cylinder is fixed on the transfer mold away from the fixed mold side through a cylinder frame, the piston rod of the driving cylinder faces downward, the end of the piston rod is connected to the middle of the lower linkage plate, and a proximity switch is provided on one side of the driving cylinder.

4. A method for clamping a lifting-type driven clamping mechanism, which uses the lifting-type driven clamping mechanism as claimed in claims 1 to 3, characterized in that: The steps are as follows: 1) When the mold transfer is moved to the specified position, each mold locking tie rod passes through the mold transfer and then passes through the tie rod through-hole of the corresponding tie rod locking slide plate, and the position of the tie rod locking groove on the mold locking tie rod is aligned with the position of the tie rod locking hole; 2) The driving cylinder receives the command to drive the tie rod locking slide plate to slide down, so that the tie rod groove on the clamping tie rod is inserted into the tie rod locking hole; 3) Then the servo motor starts to drive the ball nut to rotate, so that the ball screw drives the clamping pull block to move away from the fixed mold, tightening the corresponding clamping pull rod, so that the transfer mold is firmly locked on the fixed mold.

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