A lock strip punching and cutting machine

Abstract

In order to solve the problems of low efficiency and precision in the lock bar punching process, the present invention provides a lock bar punching and cutting machine, including a base, a workbench fixedly connected to the top of the base, the workbench including a bottom plate, a feed guide device fixedly connected to the top of the bottom plate and arranged in sequence from front to back, a feeding device and a punching and cutting device, the feeding device drives the lock bar located between the driving wheel and the driven wheel to move back and forth through a motor, and also includes a clamping cylinder for adjusting the upper and lower position relationship between the driving wheel and the driven wheel, the punching and cutting device includes a tool, a tool mounting plate, a stamping cylinder for driving the tool to move up and down, a tool guide plate that serves as a tool guide, a profile guide plate fixedly connected to the bottom plate, and a clamping device for separately laterally clamping and releasing the tool, the device can complete the lock bar punching and cutting at one time, the punching and cutting positions can be adjusted according to actual conditions, and the processing precision and efficiency are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of lock bar processing devices, and in particular to a lock bar punching and cutting machine. Background Art

[0002] The lock strip is the connection and transmission part between the handle lock and the steel bolt in the window sash, and is an indispensable part of the window sash using the handle lock.

[0003] At present, there is no automatic processing equipment for lock strips in China. The processing of lock strips is still manual punching and cutting. Since window lock strips vary in length, the punching position and size are not fixed, so the production speed is slow and the processing accuracy is low. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a lock strip punching and cutting machine, and the technical solution adopted is as follows:

[0005] A lock bar punching and cutting machine, characterized in that it comprises a base, a workbench fixedly connected to the top of the base, the workbench comprises a bottom plate, a feed guide device, a feeding device and a punching and cutting device fixedly connected to the top of the bottom plate and arranged in sequence from front to back, specifically:

[0006] The feed guide device mainly comprises a guide block, which is fixedly connected to the top of the bottom plate and is provided with through holes distributed in the front-to-back direction for the locking strip to pass through;

[0007] The feeding device comprises a pressing cylinder fixedly connected above the bottom plate and with a piston rod vertically downwardly distributed, a cylinder push plate fixedly connected to the lower end of the piston rod of the pressing cylinder, a driving wheel rotatably connected below the cylinder push plate, a driven wheel located directly below the driving wheel, and a driving motor for driving the driving wheel to rotate, wherein the axis direction of the driving wheel is horizontally distributed along a direction perpendicular to the length direction of the lock bar, and the driven wheel is rotatably connected to the bottom plate;

[0008] The punching and cutting device is located behind the feeding device, and includes a stamping cylinder fixedly connected to the top of the base plate and with a piston rod vertically downwardly distributed, a tool mounting plate fixedly connected to the bottom of the stamping cylinder piston rod, a profile guide plate located below the tool mounting plate and fixedly connected to the top of the base plate, and a tool guide plate located above the profile guide plate. The tool mounting plate is provided with a plurality of punching knives and cutting knives distributed from front to back, and the punching knives and cutting knives are both slidably connected to the tool mounting plate up and down, and the tool guide plate is provided with through holes for the punching knives and cutting knives to pass up and down. The tool mounting plate is also provided with a plurality of clamping devices for clamping the punching knives and cutting knives in the left and right directions, and the plurality of clamping devices are distributed one-to-one with the punching knives and cutting knives.

[0009] Preferably, the feeding device further comprises a detection device for measuring the length of the lock bar, wherein the detection device is an encoder, and the encoder input shaft is coaxially fixedly connected to the driven wheel.

[0010] Preferably, a PLC controller is further included, the encoder is connected to the signal input end of the PLC controller, the air supply pipelines of the clamping cylinder, the stamping cylinder and the tightening cylinder are all provided with switch solenoid valves, and the switch solenoid valves and the drive motor are connected to the signal output end of the PLC controller.

[0011] Preferably, a guide plate mounting plate is fixedly connected to the base plate, the length of the guide plate mounting plate is distributed along the processing direction of the lock strip, the profile guide plate is fixedly connected to the groove on the upper surface of the guide plate mounting plate, and the tool guide plate is fixedly connected to the upper end of the guide plate mounting plate.

[0012] Preferably, the tool guide plate is composed of a first tool guide plate and a second tool guide plate connected to the upper end of the guide plate mounting plate, the first tool guide plate is provided with a through hole for the punching knife to pass through up and down, the rear side surface of the first tool guide plate is provided with a groove for the cutting knife to pass through from top to bottom, and the second tool guide plate is detachably fixedly connected to the rear end of the first tool guide plate.

[0013] Preferably, a first guide column and a second guide column are fixedly connected above the base plate, a cylinder mounting plate is fixedly connected above the first guide column and the second guide column, the clamping cylinder and the punching cylinder are both fixedly connected to the cylinder mounting plate, and the cylinder push plate and the tool mounting plate are respectively connected to the first guide column and the second guide column in an up and down sliding manner.

[0014] Preferably, two driving wheel mounting plates are fixedly connected below the cylinder push plate, the driving wheel is rotatably connected between the two driving wheel mounting plates, and the driving wheel is fixedly connected to the power output end of the driving motor, and two driven wheel mounting blocks are also fixedly connected to the bottom plate, and the driven wheel is rotatably connected between the two driven wheel mounting blocks.

[0015] Preferably, the clamping device includes a fastening cylinder and a connecting block, the axis of the fastening cylinder piston rod is horizontally distributed in a direction perpendicular to the height of the punching knife and the cutting knife, the fastening cylinder body is fixedly connected to the tool mounting plate, one end of the fastening cylinder piston rod is fixedly connected to the connecting block, and the connecting block is provided with a through hole for the punching knife or the cutting knife to pass through up and down, and the upper end diameter of the correspondingly distributed punching knife or the cutting knife is larger than the diameter of the through hole on the connecting block.

[0016] The beneficial effects of the present invention are:

[0017] 1. The punching and cutting of the lock strip can be completed at one time, and the cutting length and punching position of the lock strip can be adjusted at will, with high processing accuracy, fast processing speed, and high processing speed, which brings huge economic benefits to production;

[0018] 2. The active feeding device and the measuring device in the feeding device are separated, and the encoder is connected to the driven wheel, which effectively avoids the lock bar slipping during transportation and affects the length measurement;

[0019] 3. The tool moves up and down along the tool guide plate, which can prevent the tool from shaking during processing and improve the processing accuracy. After the lock bar enters the punching and cutting device, it is guided by the profile guide plate, which can effectively avoid the lock bar deformation during processing and further ensure the lock bar processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the overall device structure

[0021] Figure 2 Schematic diagram of the workbench structure

[0022] Figure 3 Schematic diagram of the feeding device structure

[0023] Figure 4 Right view schematic diagram of the connection between the clamping cylinder, the cylinder push plate and the driving wheel

[0024] Figure 5 The schematic diagram of the lock bar length detection device is shown in FIG.

[0025] Figure 6 Schematic diagram of the main view of the punching and cutting device

[0026] Figure 7 for Figure 6 Left view

[0027] Figure 8 Schematic diagram of PLC control principle

[0028] Among them, 1-base, 2-bottom plate, 3-guide block, 4-first guide column, 5-second guide column, 6-cylinder mounting plate, 7-pressing cylinder, 8-cylinder push plate, 9-driving wheel, 10-driving wheel mounting plate, 11-driving motor, 12-driven wheel, 13-driven wheel mounting block, 14-encoder, 15-punching cylinder, 16-connecting plate, 17-tool mounting plate, 18-fastening cylinder, 19-connecting block, 20-punching knife, 21-cutting knife, 22-first tool guide plate, 23-second tool guide plate, 24-profile guide plate, 25-guide plate mounting plate, 26-PLC controller, 27-first solenoid switch valve, 28-second switch solenoid valve, 29-third switch solenoid valve. DETAILED DESCRIPTION

[0029] The following will refer to the attached Figure 1-8Exemplary embodiments of the present disclosure are described in detail. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0030] In the description of the invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0031] like Figure 1 The lock strip punching and cutting machine shown in the figure comprises a base 1 and a workbench, the structure of the workbench is as follows Figure 2 As shown, the workbench consists of a base plate 2, a guide device fixed to the upper wall of the base plate 2 and distributed from front to back, a feeding device and a punching and cutting device, and a cylinder mounting plate 6 is fixedly connected to the top of the base plate 2 through multiple guide columns.

[0032] Specifically, the guide device mainly includes a guide block 3, which is a rectangular block structure, and a through hole is provided in the middle part thereof in the front-to-back direction. The shape and size of the through hole are consistent with the shape of the lock bar to be processed, and it guides the movement of the lock bar.

[0033] The feeding device includes a clamping cylinder 7, a cylinder push plate 8, a driving wheel 9, and a driven wheel 12. The cylinder body of the clamping cylinder 7 is fixedly connected to the lower end surface of the cylinder mounting plate 6. The piston rod of the clamping cylinder 7 is vertically distributed downward. The cylinder push plate 8 is fixedly connected to the lower end of the piston rod of the clamping cylinder 7. The two are vertically distributed to each other. The two guide columns distributed on the left and right sides of the front of the bottom plate 2 are the first guide columns. The cylinder push plate 8 is connected to the first guide column 4 for sliding up and down. The lower end surface of the cylinder push plate 8 is vertically fixedly connected to two driving wheel mounting plates 10. The driving wheel 9 is rotatably connected to the two main guide columns. Between the driven wheel mounting plates 10, the axis of the driving wheel 9 is distributed in the left and right directions, and the driving wheel is also coaxially fixedly connected to the power output shaft of the driving motor 11. The driving motor 11 is used to drive the driving wheel 9 to rotate. In addition, a driven wheel 12 is also arranged directly below the driving wheel 9. The axis of the driven wheel 12 is distributed parallel to the axis of the driving wheel 9. Two driven wheel mounting blocks 13 are fixedly connected to the front of the upper end surface of the bottom plate 2. The driven wheel 12 is rotatably connected between the two driven wheel mounting blocks 13, and the driven wheel 12 is also coaxially fixedly connected to the input shaft of the encoder 14.

[0034] The punching and cutting device includes a punching cylinder 15, a connecting plate 16, a tool mounting plate 17, a punching knife 20, a cutting knife 21, a tool guide plate, and a profile guide plate 24. The cylinder body of the punching cylinder 15 is fixedly connected to the cylinder mounting plate 6. The piston rod of the punching cylinder 15 is vertically downward and the lower end is vertically fixedly connected to the connecting plate 16. The tool mounting plate 17 is fixedly connected to the bottom of the connecting plate 16. Four second guide columns 5 are arranged around the punching and cutting device. The four corners of the tool mounting plate 17 are connected to the second guide columns 5 by sliding up and down. Two punching knives 20 and cutting knives of different sizes are arranged on the tool mounting plate 17 from front to back. 21, the tool mounting plate 17 is provided with mounting holes for the punching knife 20 and the cutting knife 21, and the punching knife 20 and the cutting knife 21 can be slid up and down and connected to the tool mounting plate 17. It should be noted that the diameter of the upper end of the punching knife 20 and the cutting knife 21 is larger than the diameter of the respective mounting holes. Three fastening cylinders 18 are also fixedly connected to the upper end surface of the tool mounting plate 17, and one end of the piston rod of the three fastening cylinders 18 is connected to a connecting block 19. The three connecting blocks 19 are respectively distributed corresponding to the two punching knives 20 and the one cutting knife 21. The connecting block 19 is provided with a through hole penetrating in the vertical direction, and the punching knife 20 or the cutting knife 21 is fixedly connected to the upper end surface of the tool mounting plate 17. The punching knife 20 and the cutting knife 21 are connected to the through hole on the connecting block 19 by sliding downward, and the upper end diameters of the punching knife 20 and the cutting knife 21 are larger than the through hole diameter on the connecting block 19, and the piston rod axis of the fastening cylinder 18 is distributed in the left and right directions, and the fastening cylinder 18 can drive the connecting block 19 to move left and right, so as to press and limit the punching knife 20 or the cutting knife 21 separately. In addition, a guide plate mounting plate 25 is arranged below the punching knife 20 and the cutting knife 21, and the length of the guide plate mounting plate 25 is distributed in the front-to-back direction. The guide mounting plate 25 is fixedly connected to the upper end surface of the bottom plate 2, and the upper end surface of the guide plate mounting plate 25 is provided with a front-to-back direction distributed A groove, in which a profile guide plate 24 is fixedly connected, in addition, a tool guide plate is also fixedly connected to the upper end surface of the guide plate mounting plate 25, and the tool guide plate consists of a first tool guide plate 22 and a second tool guide plate 23 distributed in the front-to-back direction, and the first tool guide plate 22 is provided with two through holes for the punching knife 20 to pass through, and a rectangular groove distributed in the vertical direction is provided on the rear side surface of the first tool guide plate 22, and the front end surface of the second tool guide plate 23 is connected to the rear side surface of the first tool guide plate 22, and the two are matched and connected, so as to facilitate the adjustment of the positional relationship between the cutting knife 21 and the rectangular groove and improve the product size accuracy.

[0035] In addition, a PLC controller 26 is also provided in the base 1, and the first solenoid switch valve 27, the second solenoid switch valve 28, and the third solenoid switch valve 29 are respectively provided on the air supply pipelines of the clamping cylinder 7, the stamping cylinder 15, and the fastening cylinder 18, so as to control the movement of the corresponding cylinders. The first solenoid switch valve 27, the second solenoid switch valve 28, the third solenoid switch valve 29, and the drive motor 11 are all connected to the signal output end of the PLC controller 26, and the encoder 14 is connected to the signal input end of the PLC controller 26.

[0036] The lock strip is processed using this device. The specific work flow and principle are as follows:

[0037] First, the lock bar is passed through the through hole on the guide block 2 to guide the lock bar. After passing through the guide block 2, the lock bar enters the feeding device and passes between the driving wheel 9 and the driven wheel 12. At this time, the PLC controller 26 controls the clamping cylinder 7 to clamp downward, thereby driving the driving wheel 9 to move downward and clamping the lock bar between the driving wheel 9 and the driven wheel 12. Then the PLC controller 26 controls the drive motor 11 to start, thereby driving the lock bar to continue to move backward through the driving wheel 9 and the driven wheel 12. When the driven wheel 12 rotates, the encoder 14 rotates the corresponding number of circles at the same time. The PLC controller 26 calculates the length of the lock bar moving backward through the encoder 14, and calculates the punching and cutting position of the lock bar. When the lock bar enters the punching and cutting device, first select punching knives 20 or cutting knives 21 of different sizes according to the process settings. When selecting a tool, the PLC controller 26 controls the action of the fastening cylinder 18 to drive the pressing block 19 to press the corresponding punching knife 20 or cutting knife 21 onto the tool mounting plate 17. Then, the PLC controller 26 controls the stamping cylinder 15 to move downward, and the stamping cylinder 15 drives the tool mounting plate 17 to move downward. Since the tool selected in the previous step is pressed on the tool mounting plate 17, the selected tool will move synchronously with the tool mounting plate 17 to perform punching or cutting actions. As for the remaining unselected or pressed tools, since the tools and the tool mounting plate 17 are connected by an up and down sliding connection, the unselected tools will not move synchronously with the tool mounting plate 17. Of course, the cutting knife 21 and multiple punching knives 20 can be controlled by the PLC controller 26 in any combination to complete punching or cutting actions.

[0038] The lock bar can complete the punching and cutting operations at one time. At the same time, the punching and cutting positions can be adjusted according to products of different specifications. The lock bar is provided with a guide mechanism in the direction of movement, and the tool is also provided with a guide mechanism in the vertical direction, thereby improving the product processing accuracy.

[0039] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. A lock bar punching and cutting machine, characterized in that: It includes a base, a workbench fixedly connected to the top of the base, and the workbench includes a bottom plate, a feed guide device, a feeding device and a punching and cutting device fixedly connected to the top of the bottom plate and arranged in sequence from front to back, specifically: The feed guide device mainly comprises a guide block, which is fixedly connected to the top of the bottom plate and is provided with through holes distributed in the front-to-back direction for the locking strip to pass through; The feeding device comprises a pressing cylinder fixedly connected above the bottom plate and with a piston rod vertically downwardly distributed, a cylinder push plate fixedly connected to the lower end of the piston rod of the pressing cylinder, a driving wheel rotatably connected below the cylinder push plate, a driven wheel located directly below the driving wheel, and a driving motor for driving the driving wheel to rotate, wherein the axis direction of the driving wheel is horizontally distributed along a direction perpendicular to the length direction of the lock bar, and the driven wheel is rotatably connected to the bottom plate; The punching and cutting device is located behind the feeding device, and includes a punching cylinder fixedly connected to the top of the bottom plate and with a piston rod vertically downwardly distributed, a tool mounting plate fixedly connected to the bottom of the punching cylinder piston rod, a profile guide plate located below the tool mounting plate and fixedly connected to the top of the bottom plate, and a tool guide plate located above the profile guide plate, wherein the tool mounting plate is provided with a plurality of punching knives and cutting knives distributed from front to back, wherein the punching knives and cutting knives are both slidably connected to the tool mounting plate up and down, wherein the tool guide plate is provided with through holes for the punching knives and cutting knives to pass up and down, and wherein the tool mounting plate is further provided with a plurality of clamping devices for clamping the punching knives and cutting knives in left and right directions, wherein the plurality of clamping devices are distributed one-to-one with the punching knives and cutting knives; The feeding device also includes a detection device for measuring the length of the lock bar, the detection device is an encoder, and the encoder input shaft is coaxially fixedly connected to the driven wheel; A guide plate mounting plate is fixedly connected to the bottom plate, the length of which is distributed along the processing direction of the lock strip, the profile guide plate is fixedly connected to the groove on the upper surface of the guide plate mounting plate, and the tool guide plate is fixedly connected to the upper end of the guide plate mounting plate.

2. The lock bar punching and cutting machine according to claim 1, characterized in that: It also includes a PLC controller, the encoder is connected to the signal input end of the PLC controller, the air supply pipelines of the clamping cylinder, the stamping cylinder and the fastening cylinder are all provided with switch solenoid valves, and the switch solenoid valves and the drive motor are connected to the signal output end of the PLC controller.

3. The lock bar punching and cutting machine according to claim 1, characterized in that: The tool guide plate is composed of a first tool guide plate and a second tool guide plate connected to the upper end of the guide plate mounting plate. The first tool guide plate is provided with a through hole for the punching knife to pass through up and down, and the rear side surface of the first tool guide plate is provided with a groove for the cutting knife to pass through from top to bottom. The second tool guide plate is detachably fixedly connected to the rear end of the first tool guide plate.

4. The lock bar punching and cutting machine according to claim 1, characterized in that: A first guide column and a second guide column are fixedly connected above the base plate, a cylinder mounting plate is fixedly connected above the first guide column and the second guide column, the clamping cylinder and the punching cylinder are fixedly connected to the cylinder mounting plate, and the cylinder push plate and the tool mounting plate are respectively connected to the first guide column and the second guide column in an up and down sliding manner.

5. The lock bar punching and cutting machine according to claim 1, characterized in that: Two driving wheel mounting plates are fixedly connected below the cylinder push plate, the driving wheel is rotatably connected between the two driving wheel mounting plates, and the driving wheel is fixedly connected to the power output end of the driving motor, and two driven wheel mounting blocks are also fixedly connected to the bottom plate, and the driven wheel is rotatably connected between the two driven wheel mounting blocks.

6. The lock bar punching and cutting machine according to claim 1, characterized in that: The clamping device includes a fastening cylinder and a connecting block. The axis of the fastening cylinder piston rod is horizontally distributed in a direction perpendicular to the height of the punching knife and the cutting knife. The fastening cylinder body is fixedly connected to the tool mounting plate. One end of the fastening cylinder piston rod is fixedly connected to the connecting block. The connecting block is provided with through holes for the punching knife or the cutting knife to pass through up and down, and the upper end diameter of the correspondingly distributed punching knife or the cutting knife is larger than the diameter of the through hole on the connecting block.

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