Punching system and side punching method

Abstract

The invention discloses a punching system and a side punching method. The punching system comprises an upper die frame and a lower die frame. A first side punching station and a second side punching station are arranged between the upper die frame and the lower die frame. The side punching device further comprises a feeding carrying table, a discharging carrying table and a transferring mechanism used for transferring workpieces. A group of punching modules is arranged in each of the first side punching station and the second side punching station; each punching module comprises a pushing positioning mechanism connected to the lower end of the upper die frame and a side punching mechanism connected to the upper end of the lower die frame and located below the pushing positioning mechanism. The side punching mechanism comprises a female die, a workpiece carrier block arranged on the outer ring of the female die and two sets of male die assemblies symmetrically distributed on the two sides of the female die. The male die assembly in the first side punching station can be used for forming a pair of punching holes in the left-right direction in a workpiece. The male die assembly in the second side punching station can be used for forming a pair of punching holes in the front-back direction in the workpiece. Two blanking holes can be blanked in the side wall of the workpiece at the same time, and efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of punching, in particular to a punching system and a side punching method. Background Art

[0002] In the process of processing and manufacturing the workpiece, it is necessary to perform a punching process on the workpiece to realize the formation of preset punching holes on the workpiece. When the workpiece is a rotating body, it is hollow inside and the outer wall is circular. When it is necessary to punch out a number of punching holes radially on the circular outer wall of the workpiece, the existing punching tooling mostly adopts a top-down punching method, that is, the die extends left and right, the punching holes on the die are connected up and down, and the punch is connected to the upper die frame; during operation, the workpiece is sleeved on the outer ring of the die, and the lower end of the punch is driven by the upper die frame to punch vertically downward toward the die punching hole, and punching holes are formed on the arc-shaped outer wall of the workpiece.

[0003] If you want to punch out multiple punching holes on the side wall of the workpiece, the final result will be as follows: Figure 1 The punched workpiece A shown has four radially distributed punching holes A1 formed on its outer wall. Using the existing punching tool and following the above-mentioned punching method, only one punching hole can be formed on the side wall of the workpiece after each punching operation. After each punching operation, the workpiece needs to be rotated circumferentially to align the next punching surface on the outer wall of the workpiece with the lower end of the punch, and then the second punching operation is performed. This cycle is repeated to form multiple punching holes in the circumferential direction of the side wall of the workpiece in turn. In the above-mentioned manner, four punching operations and three workpiece rotation operations are required to complete four punching holes on the workpiece, which results in relatively low punching efficiency. Summary of the invention

[0004] Technical issues solved

[0005] The purpose of the present invention is to provide a punching system to solve the technical problem of low punching efficiency when using existing punching tools to punch multiple punching holes in the radial direction of the side wall of a rotating workpiece. The present invention has a simple structure and lower cost.

[0006] Technical Solution

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A punching system, comprising an upper die frame and a lower die frame distributed up and down; a first side punching station and a second side punching station distributed left and right are arranged between the upper die frame and the lower die frame; and further comprising a loading platform, a unloading platform and a transfer mechanism for transferring workpieces;

[0009] A group of punching modules with the same structure is respectively arranged in the first side punching station and the second side punching station; each group of punching modules includes a push positioning mechanism connected to the lower end of the upper die frame and a side punching mechanism connected to the upper end of the lower die frame and located below the push positioning mechanism;

[0010] Each of the side punching mechanisms comprises a die, a workpiece carrier disposed on the outer ring of the die, and two groups of punch assemblies symmetrically distributed on both sides of the die; two die punching holes are symmetrically distributed on the side wall of the die, and the two ends of the die punching holes are horizontally connected; a discharge cavity connected to the die punching holes is also provided in the die; each group of punch assemblies comprises a punch extending horizontally in the direction of the die punching holes; in each group of punching modules, the push positioning mechanism can push the workpiece after pressing down and drive the punch to move;

[0011] The punching module in the first side punching station is used to form a first pair of punching holes on the side wall of the workpiece, and the punching module in the second side punching station is used to form a second pair of punching holes on different parts of the side wall of the workpiece.

[0012] Furthermore, each group of the punch assembly also includes a punch fixing block, a slide block, a punch side push block, a reset pull rod and a side stop block;

[0013] The punch is connected to the punch fixing block and extends laterally in the punching direction of the die; the slide block is provided with a slide groove for the punch fixing block to slide laterally, and the punch fixing block is placed in the slide groove; the punch side push block is located between the side stop block and the punch fixing block, and one end of the punch fixing block facing the punch side push block is provided with a guide slide slope 1, and one end of the punch side push block facing the punch fixing block is provided with a guide slide slope 2 corresponding to the guide slide slope 1; the lower end of the punch side push block is also connected to a longitudinally telescopic side push block spring;

[0014] One end of the reset rod passes through the side block and the punch side push block in sequence and is connected to the punch fixing block; the other end of the reset rod is provided with a rear blocking part, the side block is also provided with a front blocking part, and a rod reset spring is also connected between the front blocking part and the rear blocking part; the workpiece carrier block is movably connected to the die; a carrier block reset spring is also provided under the workpiece carrier block;

[0015] Each push positioning mechanism comprises a workpiece push rod located above the workpiece carrier block and a side push block push rod located above the punch side push block.

[0016] Further, the transfer mechanism includes a front-to-rear parallel moving rod 1 and a moving rod 2; the left and right ends of the moving rod 1 are respectively connected to a left and right linear slide rail 1 and a left and right linear slide rail 2 for driving the moving rod 1 to move left and right; the left and right ends of the moving rod 2 are respectively connected to a left and right linear slide rail 3 and a left and right linear slide rail 4 for driving the moving rod 2 to move left and right; the left and right linear slide rails 1 and the left and right linear slide rails 3 are simultaneously connected to the front and rear linear slide rails 1; the left and right linear slide rails 2 and the left and right linear slide rails 4 are simultaneously connected to the front and rear linear slide rails 2;

[0017] The first side punching station and the second side punching station are located between the moving rod one and the moving rod two; three clamping parts one are provided on the moving rod one, and three clamping parts two are provided on the moving rod two; one clamping part one and one clamping part two together constitute a group of clamping components that can clamp the workpiece after centering movement; the left and right lateral spacings between two adjacent groups of clamping components are the same; and after the moving rod one and the moving rod two are centeringly moved, the three groups of clamping components can simultaneously clamp three different workpieces that are respectively located on the loading platform, the upper end of the workpiece carrier block in the first side punching station, and the upper end of the workpiece carrier block in the second side punching station.

[0018] Furthermore, the gripping component 1 and the gripping component 2 have the same structure, and are both lifting claw manipulators; the lifting claw manipulators include a main body connector, a lifting claw, a lifting claw guide block, a lifting claw limit block, a limit screw and a first spring;

[0019] An inclined surface is provided on the main connecting member, the lifting claw guide block is arranged on the inclined surface, and a guide groove is provided between the lifting claw guide block and the inclined surface; the lifting claw passes through the guide groove, and the rear end of the lifting claw is connected to the lifting claw limit block; the rear end of the lifting claw limit block is connected to the limit screw, and the limit screw is movably connected to the main connecting member; the first spring is arranged on the outer ring of the limit screw and is located at the rear side of the lifting claw limit block;

[0020] The lifting claw comprises an inclined rear portion and a transverse front portion, and an angle between the inclined rear portion and the transverse front portion is an obtuse angle.

[0021] Furthermore, the main connecting member is also connected to an ejector pin sensing assembly; the ejector pin sensing assembly includes an ejector pin, an ejector pin guide block, a second spring, a second spring stop block, a photoelectric sensing head and a photoelectric sensor;

[0022] The ejector guide block is fixedly connected to the main connecting piece, and the ejector is slidably connected to the ejector guide block; the second spring limit block is connected to the ejector, and the second spring is arranged on the outer ring of the ejector and is located between the second spring limit block and the ejector guide block; the front end of the ejector is located at the rear side of the lifting claw limit block; the photoelectric sensing head is connected to the rear end of the ejector, and the photoelectric sensor is located at the rear side of the photoelectric sensing head.

[0023] Furthermore, the upper end of the workpiece carrier is also provided with a die sleeve hole which passes through from top to bottom and two parallel protruding ends which protrude upward; a limiting component which limits the further upward movement of the workpiece carrier is also provided above the workpiece carrier; the limiting component is two parallel limiting strips, the limiting strip is located between the two protruding ends, and the die sleeve hole is located between the two limiting strips; the limiting strip extends laterally, and the limiting strip is fixedly connected to the side block.

[0024] A side punching method is completed using the punching system; the upper end of the workpiece carrier is provided with a workpiece punching position, and after the workpiece is placed in the workpiece punching position, it is placed at the upper end of the workpiece carrier and above the die; the workpiece punching position in the first side punching station is the first punching position, and the workpiece punching position in the second side punching station is the second punching position; the side punching method includes the following operating steps:

[0025] Step 1: The transfer mechanism transfers the workpiece in the loading platform to the first punching position;

[0026] Step 2: The upper die frame is pressed downward, and the punching module in the first side punching station punches the workpiece in the first punching station to form a first pair of punching holes on the side wall of the workpiece;

[0027] Step 3: The upper mold frame is reset and moved upward;

[0028] Step 4: The transfer mechanism transfers the workpiece in the first punching position to the second punching position, and transfers the next workpiece in the loading platform to the first punching position;

[0029] Step 5: Press down the upper mold frame;

[0030] Step 6: The punching module in the first side punching station punches the workpiece in the first punching station to form a first pair of punching holes on the side wall of the workpiece; at the same time, the punching module in the second side punching station punches the workpiece in the second punching station to form a second pair of punching holes on the side wall of the workpiece;

[0031] Step 7: The upper mold frame is reset and moved upward;

[0032] Step 8: The transfer mechanism transfers the workpiece in the second punching position to the unloading platform, transfers the workpiece in the first punching position to the second punching position, and transfers the next workpiece in the loading platform to the first punching position;

[0033] Step 9. Repeat steps 5 to 8.

[0034] Furthermore, each group of the punch assembly also includes a punch fixing block, a slide block, a punch side push block, a reset pull rod and a side stop block;

[0035] The punch is connected to the punch fixing block and extends laterally in the punching direction of the die; the slide block is provided with a slide groove for the punch fixing block to slide laterally, and the punch fixing block is placed in the slide groove; the punch side push block is located between the side stop block and the punch fixing block, and one end of the punch fixing block facing the punch side push block is provided with a guide slide slope 1, and one end of the punch side push block facing the punch fixing block is provided with a guide slide slope 2 corresponding to the guide slide slope 1; the lower end of the punch side push block is also connected to a longitudinally telescopic side push block spring;

[0036] One end of the reset rod passes through the side block and the punch side push block in sequence and is connected to the punch fixing block; the other end of the reset rod is provided with a rear blocking part, the side block is also provided with a front blocking part, and a rod reset spring is also connected between the front blocking part and the rear blocking part; the workpiece carrier block is movably connected to the die; a carrier block reset spring is also provided under the workpiece carrier block;

[0037] Each set of the push positioning mechanism comprises a workpiece push rod located above the workpiece carrier block and a side push block push rod located above the punch side push block;

[0038] The steps of punching operation of each punching module on the workpiece are as follows:

[0039] First, after the upper die frame is pressed down, the workpiece pressing rod presses the upper end of the workpiece located on the workpiece carrier from top to bottom;

[0040] Then, the upper die frame continues to press down, the workpiece and the workpiece carrier block move downward under the push of the workpiece pressing rod, the punch side push block moves downward under the push of the side push block pressing rod, and the punch fixing block moves horizontally, driving the punch to move horizontally toward the punching direction of the die;

[0041] Finally, when the side wall of the workpiece is located between the punch holes of the punch and the die, the two punches in the side punch mechanism perform centering punching to form a pair of punch holes on the side wall of the workpiece;

[0042] After the upper die frame is reset and moved upward, the punch side push block is reset and moved upward driven by the side push block spring, the punch fixing block is reset and moved under the action of the pull rod reset spring, and the workpiece carrier block is reset and moved upward under the action of the carrier block reset spring.

[0043] Further, the transfer mechanism includes a front-to-rear parallel moving rod 1 and a moving rod 2; the left and right ends of the moving rod 1 are respectively connected to a left and right linear slide rail 1 and a left and right linear slide rail 2 for driving the moving rod 1 to move left and right; the left and right ends of the moving rod 2 are respectively connected to a left and right linear slide rail 3 and a left and right linear slide rail 4 for driving the moving rod 2 to move left and right; the left and right linear slide rails 1 and the left and right linear slide rails 3 are simultaneously connected to the front and rear linear slide rails 1; the left and right linear slide rails 2 and the left and right linear slide rails 4 are simultaneously connected to the front and rear linear slide rails 2;

[0044] The first side punching station and the second side punching station are located between the moving rod one and the moving rod two; three clamping parts one are provided on the moving rod one, and three clamping parts two are provided on the moving rod two; one clamping part one and one clamping part two together constitute a group of clamping components that can clamp the workpiece after centering movement; the left and right lateral spacings between two adjacent groups of clamping components are the same; and after the moving rod one and the moving rod two are centeringly moved, the three groups of clamping components can simultaneously clamp three different workpieces that are respectively located on the loading platform, the upper end of the workpiece carrier block in the first side punching station, and the upper end of the workpiece carrier block in the second side punching station.

[0045] Furthermore, the clamping component 1 and the clamping component 2 have the same structure, and both are lifting claw manipulators; the lifting claw manipulator comprises a main body connecting member, a lifting claw, a lifting claw guide block, a lifting claw limit block, a limit screw and a first spring; an inclined surface is provided on the main body connecting member, the lifting claw guide block is arranged on the inclined surface, and a guide groove is provided between the lifting claw guide block and the inclined surface; the lifting claw passes through the guide groove, and the rear end of the lifting claw is connected to the lifting claw limit block; the rear end of the lifting claw limit block is connected to the limit screw, and the limit screw is movably connected to the main body connecting member; the first spring is arranged on the outer ring of the limit screw and is located at the rear side of the lifting claw limit block;

[0046] The lifting claw comprises an inclined rear portion and a transverse front portion, and an angle between the inclined rear portion and the transverse front portion is an obtuse angle.

[0047] During the operation of the moving mechanism moving the workpiece, the three groups of clamping components move left and right synchronously; after the clamping component one and the clamping component two align and clamp the workpiece, the first spring is compressed and contracts, and the lifting claw moves backward and upward, driving the clamped workpiece to be lifted upward.

[0048] Compared with the prior art, the present invention provides a punching system having the following beneficial effects:

[0049] The punching system of the present invention includes two side punching stations, namely a first side punching station and a second side punching station distributed on the left and right, and a group of punching modules are respectively arranged in the first side punching station and the second side punching station. The punch assembly in the first side punching station can be used to form a pair of punching holes in the left-right direction on the workpiece; the punch assembly in the second side punching station can be used to form a pair of punching holes in the front-back direction on the workpiece. The present invention can realize punching out two pairs of punching holes in the side wall of the workpiece successively, and a pair of punching holes can be formed in each punching operation, which is highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the structure of the punched workpiece in the invention.

[0051] Figure 2It is an exploded view of the punching module, the upper mounting block 1, the upper mounting block 2 and the lower mold frame in the present invention.

[0052] Figure 3 It is a cross-sectional view of the connection structure of the punching module of the present invention when in use (including the upper mold frame and the lower mold frame).

[0053] Figure 4 It is a cross-sectional view of the side punch mechanism of the present invention (including the lower mold frame).

[0054] Figure 5 It is a schematic diagram of the structural distribution of two groups of punch components (excluding side blocks, reset pull rods and side push block springs) in the side punch mechanism of the present invention.

[0055] Figure 6 It is a structural schematic diagram of the punch assembly 2 in the side punch mechanism of the present invention.

[0056] Figure 7 It is a structural schematic diagram of the punch assembly 1 in the side punch mechanism of the present invention.

[0057] Figure 8 It is a structural schematic diagram of the punch side push block 1 in the present invention.

[0058] Fig. 9 It is a structural schematic diagram of the punch fixing block 1 in the present invention.

[0059] Fig.10 It is a schematic diagram of the top view of the punching system in the present invention (the push positioning mechanism, the upper mold frame and the lower mold frame are not shown).

[0060] Fig.11 It is a three-dimensional view of the lifting claw manipulator in the present invention. Figure 1 (Lifting claw is not lifted).

[0061] Fig.12 It is a three-dimensional view of the lifting claw manipulator in the present invention. Figure 2 (After clamping the workpiece, the lifting claw is lifted up under force).

[0062] Fig.13 It is a side view of the lifting claw manipulator in the present invention.

[0063] Fig.14 It is a top view of the lifting claw manipulator in the present invention.

[0064] In the figure:

[0065] 1-side punching mechanism in the first side punching station, 2-side punching mechanism in the second side punching station, 3-loading position, 4-unloading position, 11-first punching position, 21-second punching position;

[0066] 100-upper die frame, 101-upper mounting block 1, 102-upper mounting block 2, 200-lower die frame, 201-lower mounting block, 300-die, 301-die punching hole 1, 302-die punching hole 2, 303-discharging cavity, 400-punch 1, 401-punch pressing block 1, 402-punch fixing seat 1, 403-punch side push block 1, 404-side push block spring 1, 405-slide block 1, 406-side stop block 1, 407-spring limit plate 1, 408-reset pull rod 1, 409-pull rod reset spring 1, 4012-guide slide slope 1, 4031-side push block upper part, 4032-side push block lower part, 4033-through hole, 4034-guide slide slope 2;

[0067] 500-Punch 2, 501-Punch pressing block 2, 502-Punch fixing seat 2, 503-Punch side push block 2, 504-Side push block spring 2, 505-Slide block 2, 506-Side stop block 2, 507-Spring limit plate 2, 508-Reset rod 2, 509-Reset spring 2 of rod;

[0068] 600-workpiece push rod, 601-side push block push rod, 602-guide pin, 603-carrier block push rod, 604-rod sleeve, 605-pull rod buffer spring, 606-head, 607-accommodation cavity;

[0069] 700-workpiece carrier, 701-limit rod, 702-carrier return spring, 703-limit pressure strip, 800-workpiece;

[0070] 901-moving rod one, 902-moving rod two, 903-gripping component one, 904-gripping component two, 905-left and right linear slide rails one, 906-left and right linear slide rails two, 907-left and right linear slide rails three, 908-left and right linear slide rails four, 909-front and rear linear slide rails one, 910-front and rear linear slide rails two; 911-main body connecting part, 912-lifting claw guide block, 913-lifting claw, 914-lifting claw limit block, 915-first spring, 916-limiting screw, 917-thrust pin, 918-thrust pin guide block, 919-photoelectric sensor head, 920-arc-shaped slot, 921-second spring, 922-second spring limit block. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] like Figure 2-12As shown, the present invention provides a punching system, which includes an upper mold frame 100 and a lower mold frame 200 distributed up and down; a first side punching station and a second side punching station distributed left and right are provided between the upper mold frame 100 and the lower mold frame 200; and also includes a loading platform, a unloading platform and a transfer mechanism for transferring workpieces.

[0073] A set of punching modules with the same structure is provided in each of the first side punching station and the second side punching station, that is, the same punching system includes a total of two sets of punching modules with the same structure, and the two sets of punching modules are respectively located in the first side punching station and the second side punching station. The connection structure between the punching module and the upper mold frame and the lower mold frame is as shown in FIG. Figure 2-3 As shown, each punching module group includes a push positioning mechanism connected to the lower end of the upper mold frame 100 and a side punching mechanism connected to the upper end of the lower mold frame 200 and located below the push positioning mechanism. Figure 4 It is a cross-sectional view of the connection structure between the side punch mechanism and the lower mold frame. Figure 3 The push-and-position mechanism is located directly above the side punch mechanism. Each punching module includes a push-and-position mechanism and a side punch mechanism. When the upper die frame is pressed down, it will drive the push-and-position mechanism to move downward as a whole. The push-and-position mechanism and the side punch mechanism work together to realize the punching operation.

[0074] Preferably, Figure 2-4 The structures of the upper mold frame 100 and the lower mold frame 200 shown are for illustration only. In actual production, we can design and adjust the sizes of the upper mold frame 100 and the lower mold frame 200 as needed to achieve that in the same punching system, the punching module in the first side punching station and the punching module in the second side punching station are connected between the same upper mold frame and the same lower mold frame, that is, two pushing and positioning mechanisms are connected at the lower end of the same upper mold frame and two side punching mechanisms are connected at the upper end of the same lower mold frame, and each pushing and positioning mechanism and each side punching mechanism together form a group of punching modules, totaling two punching modules.

[0075] From a top view, the structural diagram of the punching system in this embodiment is as follows: Fig.10 As shown, Fig.10 The upper mold frame, lower mold frame and two push positioning mechanisms are not shown. Fig.10 As shown, in the punching system, the loading position 3 (located at the upper end of the loading platform), the first punching position 11 (located in the side punching mechanism 1 in the first side punching station), the second punching position 21 (located in the side punching mechanism 2 in the second side punching station), and the unloading position 4 (located at the upper end of the unloading platform) are arranged in sequence from left to right.

[0076] Specifically, Figure 4 : is a cross-sectional view of the side punch mechanism of the present invention (including the lower mold frame). Figure 4As shown, the side punch mechanism includes a die 300, a workpiece carrier 700 disposed on the outer ring of the die 300, and two sets of convex die assemblies with the same structure symmetrically distributed on both sides of the die 300. The structural schematic diagram of the convex die assembly is shown in FIG. Figure 7 .

[0077] like Figure 4 As shown, in the same side punch mechanism, a group of male mold components with the same structure are respectively provided on the left and right sides of the female mold 300. Figure 4 In the embodiment, the male mold component located on the left side of the female mold 300 is the male mold component 1, and the male mold component located on the right side of the female mold 300 is the male mold component 2; the structure and size of the male mold component 1 and the male mold component 2 are the same (such as Figure 4 , 5 The two are symmetrically distributed on both sides of the female mold 300. Specifically, the cross-sectional view of the male mold component 1 is as shown in FIG. Figure 7 As shown, the cross-sectional view of the male mold component 2 is as follows Figure 6 shown.

[0078] We take the punch assembly 1 as an example to explain the structure and operation of the punch assembly. The structure and operation of the punch assembly 2 refer to the punch assembly 1. Figure 7 As shown, Figure 4 The schematic diagram of the structure of the male mold assembly 1 located on the left side of the female mold 300 includes a male mold fixing block 1 (such as Fig. 9 As shown), a punch 400, a slide block 405, a punch side push block 403, a reset pull rod 408 and a side stop block 406; the punch 400 is connected to the punch fixing block 1 and extends toward the die punching hole 301; the slide block 405 is provided with a slide groove (as shown) for the punch fixing block 1 to slide horizontally Figure 2 As shown), the punch fixing block 1 is placed in the slide groove 1; Figure 7-9 As shown, the punch side push block 403 is located between the side stop block 406 and the punch fixed block 1, and the end of the punch fixed block 1 facing the punch side push block 403 is provided with a guide sliding slope 4012, and the end of the punch side push block 403 facing the punch fixed block 1 is provided with a guide sliding slope 2 4034 corresponding to the guide sliding slope 4012; the lower end of the punch side push block 403 is also connected to a longitudinally retractable side push block spring 404; one end of the reset rod 408 is fixedly connected to the punch fixed block 1.

[0079] like Figure 2 As shown, in this embodiment, the punch fixing block 1 is composed of a punch fixing seat 1 401 and a punch pressing block 1 402, and the punch fixing seat 1 401 and the punch pressing block 1 402 are detachably connected, and the punch 1 400 is fixed between the punch fixing seat 1 401 and the punch pressing block 1 402. At the same time, the punch 1 400 extends horizontally toward the direction of the die punching hole 1 301 set on the side wall of the die 300, as shown in FIG. Figure 4Correspondingly, the second male mold 500 extends laterally toward the second female mold punching hole 302 disposed on the side wall of the female mold 300 .

[0080] In this embodiment, each side punch mechanism includes a die 300 and two sets of punch assemblies, and the two sets of punch assemblies include two punches (i.e., punch 1 400 and punch 2 500). A discharge cavity 303 is also provided in the die 300, and two die punching holes (die punching hole 1 301 and die punching hole 2 302, respectively) are symmetrically distributed on the side wall of the die 300. Figure 4 The discharge cavity 303 is connected to the two die punching holes. After the punching operation, the waste will enter the discharge cavity 303.

[0081] Furthermore, the punches in each set of punch assemblies are aligned with a die for punching. Figure 4 As shown, the punch 1 400 extends laterally toward the die punch 1 301, and the punch 2 500 extends laterally toward the die punch 2 302. Since the punch 1 400 and the punch 2 500 are symmetrically distributed on both sides of the die 300, during operation, the punch 1 400 and the punch 2 500 will be centered and moved horizontally for punching.

[0082] like Figure 7 As shown, it is a schematic cross-sectional view of the male mold component 1. In this embodiment, the first guide slide slope 4012 and the second guide slide slope 4034 are in close contact with each other. Figure 8 As shown, the male mold side push block 403 includes two parts, the upper part is the side push block upper part 4031, and its cross section is trapezoidal; the lower part is the side push block lower part 4032, and its cross section is long strip. The side push block upper part 4031 is also provided with a through hole 4033 that passes through the left and right ends, and the height of the through hole 4033 is greater than the thickness of the reset pull rod 408, as shown in FIG. Figure 7 As shown, when the reset rod 408 is laterally inserted into the through hole 4033, there is still a spacing space between the reset rod 408 and the side wall of the through hole 4033. That is, when the reset rod 408 is fixed up and down, the male mold side push block 403 can move relative to the reset rod 408 in the up and down direction.

[0083] Likewise, if Figure 7 As shown, in this embodiment, the reset rod 408 sequentially passes through the side block 406, the spring stop plate 407 and the through hole 4033 and is fixedly connected to the punch fixing seat 401, and the reset rod 408 is slidably connected to the side block 406, the spring stop plate 407 and the through hole 4033. Fig. 9As shown, a mounting hole 4011 is provided on the guide slide inclined surface 1 4012. In this embodiment, the right end of the reset rod 1 408 is inserted into the mounting hole 4011 and fixedly connected to the punch fixing block 1. In this way, when the punch fixing block 1 moves laterally along the slide groove 1, the reset rod 1 408 will be driven to move synchronously. In addition, since the reset rod 1 408 passes through the side block 1 406 laterally and one end of the reset rod 1 408 is fixedly connected to the punch fixing block 1, the movement of the reset rod 1 408 in the up-and-down direction is limited, and thus the displacement of the punch fixing block 1 in the up-and-down direction can also be limited.

[0084] The left end of the reset rod 408 is located outside the left side of the side stopper 406, and a limiting protrusion is provided on the left end. A rod reset spring 409 is provided between the limiting protrusion and the spring limiting plate 407. The rod reset spring 409 is sleeved on the outer ring of the reset rod 408. Figure 7 When the punch side push block 403 is pressed downward by the downward force, the side push block spring 404 is forced to shrink, and at the same time, the punch side push block 403 pushes the punch fixing block 1 to move toward the die 300, and the pull rod reset spring 409 is forced to shrink; after the punch fixing block 1 moves toward the die 300, the punch 400 can align with the die punch hole 301 for punching.

[0085] When the downward force on the punch side push block 403 is removed, the side push block spring 404 is reset and extended, the punch side push block 403 is reset and moved upward, the reset spring 409 is reset and extended, and the reset pull rod 408 is reset and moved to the left under the action of the reset spring 409, thereby driving the punch fixing block 1 to reset and move away from the die 300, and the punch 400 withdraws from the die punching hole 301.

[0086] In this embodiment, a workpiece carrier block 700 is further connected to the outer ring of the die 300 for supporting the workpiece 800. The structure of the workpiece carrier block 700 is as follows: Figure 2 As shown in . The workpiece carrier 700 is movably connected to the die 300, and four limiting rods 701 are also connected to the lower end of the workpiece carrier 700, and the outer ring of each limiting rod 701 is sleeved with a carrier reset spring 702, the upper end of the carrier reset spring 702 is fixedly connected to the lower end of the workpiece carrier 700, and the length of the limiting rod 701 is shorter than the length of the carrier reset spring 702. Since the carrier reset spring 702 is sleeved on the outer ring of the limiting rod 701, and the limiting rod 701 is a straight rod extending longitudinally, it plays a certain limiting role on the carrier reset spring 702.

[0087] When the workpiece carrier 700 is pressed and moved downward, the limit rod 701 is synchronously moved downward, and the carrier reset spring 702 is forced to shrink. When the downward pressure acting on the upper end of the carrier reset spring 702 disappears, the carrier reset spring 702 is reset and extended, and drives the workpiece carrier 700 to reset and move upward. In the above process, when the workpiece carrier 700 moves downward, the space between the punch 1 400 and the die punch 1 301 and the space between the punch 2 500 and the die punch 2 302 can be vacated, so that the punch 1 400 and the punch 2 500 can be conveniently moved toward the die 300 and punched into the die punch 1 301 and the die punch 2 302 respectively. At the same time, after the punch 1 400 and the punch 2 500 are reset and moved, the workpiece carrier 700 is reset and moved upward, and the workpiece 800 located at the upper end of the workpiece carrier 700 can be reset and moved upward to the initial height. At this time, the workpiece carrier 700 is also at the initial height.

[0088] like Figure 4 As shown in the figure, the workpiece carrier 700 is at the initial height. At the same time, in order to limit the height of the workpiece carrier 700 moving upward, in this embodiment, a limiting component is added to limit the workpiece carrier from moving upward, that is, two parallel limiting pressure strips 703.

[0089] like Figure 2 , 4 As shown, the upper end of the workpiece carrier 700 is provided with a die sleeve hole that passes through from top to bottom and two parallel protruding ends that protrude upward; the upper end of the die 300 is inserted upward into the die sleeve hole, and two limiting pressure strips 703 are located between the two protruding ends, and the die sleeve hole is located between the two limiting pressure strips 703; the limiting pressure strip 703 extends horizontally, and the two ends of the limiting pressure strip 703 are respectively fixedly connected to the side stopper 406 and the side stopper 506. The limiting pressure strip 703 is connected to the upper part of the workpiece carrier 700, which can prevent the workpiece carrier 700 from continuing to move upward under the drive of the carrier reset spring 702, thereby limiting the movable height of the workpiece carrier 700.

[0090] At the same time, the two limiting pressure strips 703 extend horizontally and are parallel to each other and spaced apart. Figure 2 , 3 As shown, the upper portion of the first punch fixing block and the upper portion of the second punch fixing block are both confined between two limiting pressure strips 703 .

[0091] In this punching module, during the punching operation, the punch moves laterally to perform side punching, rather than punching from top to bottom toward the die. In addition, we simultaneously arrange two sets of punch assemblies with the same structure and size on the symmetrical sides of a die, and simultaneously press down the punch side push block 1 403 and the punch side push block 2 503 through the top push positioning mechanism, so that the punch 1 400 and the punch 2 500 are centered and punched synchronously, and the same side punch mechanism punches out two symmetrical punching holes on the outer wall of the workpiece 800 at one time, which can realize the steps of quickly performing the punching operation on the rotating body.

[0092] In this embodiment, each punching module includes a push positioning mechanism, each push positioning mechanism includes a workpiece push component located above the workpiece carrier 700 and a side push block push rod located above the punch side push block. A side push block push rod 601 is connected to the top of the punch side push block 1 403 and the top of the punch side push block 2 503, respectively.

[0093] At the same time, if Figure 3 As shown, in this embodiment, the workpiece pressing component includes a workpiece pressing rod 600 , a pressing rod buffer spring 605 , a rod sleeve 604 penetrating the upper and lower ends, and a top head 606 connected to the lower end of the workpiece pressing rod 600 .

[0094] like Figure 2 , 3 As shown, the lower end of the workpiece pressing rod 600 is inserted into the rod sleeve 604 and is fastened to the rod sleeve 604 through the plug 606. Specifically, the plug 606 is threadedly connected to the lower end of the workpiece pressing rod 600, and the outer wall of the plug 606 is threadedly connected to the inner wall of the lower end of the rod sleeve 604. At the same time, an accommodating cavity 607 for accommodating a push rod buffer spring 605 and the upper part of the rod sleeve 604 is provided in the upper mold frame 100 and the upper mounting blocks (upper mounting block 1 101 and upper mounting block 2 102). The accommodating cavity 607 is connected from top to bottom, the upper part of the rod sleeve 604 is placed in the accommodating cavity 607, and the lower end of the rod sleeve 604 extends downward and is located outside the accommodating cavity 607; above the rod sleeve 604 in the accommodating cavity 607 is a push rod buffer spring 605, which is sleeved on the outer ring of the workpiece push rod 600; a circle of transverse protrusions is circumferentially provided on the upper end of the rod sleeve 604 to limit the rod sleeve 604 from falling downward out of the accommodating cavity 607, such as Figure 3 As shown, the lower end of the transverse protrusion is clamped on the upper end of the upper mounting block 101, and the lower end of the push rod buffer spring 605 is placed on the upper end of the transverse protrusion, thereby preventing the push rod buffer spring 605 from falling downward. At the same time, the workpiece push rod 600 is movably connected to the upper through hole on the upper mold frame 100, and the rod sleeve 604 is movably connected to the upper mounting block 101. When the upper mold frame 100 is pressed downward, the top head 606 will contact the upper end of the workpiece 800, and the push rod buffer spring 605 will be contracted under force to achieve a certain buffering and unloading effect.

[0095] Of course, we can also directly use the solution of workpiece push rod plus elastic component, that is, the upper end of the workpiece push rod is connected to the elastic component, and the elastic component is connected to the lower end of the upper mold frame, and the elastic component can also be used to achieve buffering and unloading effect.

[0096] The workpiece can be pressed by the workpiece pressing component; the side push block can be pushed to move and finally drive the punch to move horizontally through the side push block pressing rod. Thus, the push positioning mechanism can press the workpiece and drive the punch to move horizontally after pressing down.

[0097] At the same time, if Figure 2 , 3 As shown, we also add four carrier block pressing rods 603 in the push positioning mechanism, the carrier block pressing rods 603 are connected to the lower end of the upper mold frame 100 through the upper mounting block, and the lower ends of the carrier block pressing rods 603 are located above the workpiece carrier block 700. During operation, the downwardly pressed carrier block pressing rods 603 can be used to press the workpiece carrier block 700 downward.

[0098] like Fig.10 As shown, the side punching mechanism in the first side punching station and the side punching mechanism in the second side punching station are identical in structure and size, except that the two die punching holes in the first side punching station are distributed left and right, and the two punches in the first side punching station punch and cut in the left and right direction; the two die punching holes in the second side punching station are distributed front and back, and the two punches in the second side punching station punch and cut in the front and back direction.

[0099] At the same time, if Fig.10 As shown, in this embodiment, the material moving mechanism includes a front-to-rear parallel moving rod 1 901 and a second moving rod 902; the left and right ends of the moving rod 1 901 are respectively connected to a left and right linear slide rail 1 905 and a left and right linear slide rail 2 906, and the left and right linear slide rail 1 905 and the left and right linear slide rail 2 906 can be used to drive the moving rod 1 901 to move left and right; the left and right ends of the moving rod 2 902 are respectively connected to a left and right linear slide rail 3 907 and a left and right linear slide rail 4 908, and the left and right linear slide rail 3 907 and the left and right linear slide rail 4 908 can be used to drive the moving rod 2 902 to move left and right.

[0100] In this embodiment, two sliders that can move in the center are provided in the front and rear linear slide rails 1 909 and the front and rear linear slide rails 2 910. The left and right linear slide rails 1 905 are connected to one slider of the front and rear linear slide rails 1 909, and the left and right linear slide rails 3 907 are connected to the other slider of the front and rear linear slide rails 1 909; the left and right linear slide rails 2 906 are connected to one slider of the front and rear linear slide rails 2 910, and the left and right linear slide rails 4 908 are connected to the other slider of the front and rear linear slide rails 2 910.

[0101] The front and rear linear slide rail 1 909 can drive the left and right linear slide rail 1 905 and the left and right linear slide rail 3 907 to move in the front and rear direction; the front and rear linear slide rail 2 910 can drive the left and right linear slide rail 2 906 and the left and right linear slide rail 4 908 to move in the front and rear direction.

[0102] In this embodiment, the left and right linear slide rails 1 905, the left and right linear slide rails 2 906, the left and right linear slide rails 3 907, the left and right linear slide rails 4 908, the front and rear linear slide rails 1 909 and the front and rear linear slide rails 2 910 all use servo motors as power drive components.

[0103] Through the above structure, the movement of the moving rod 1 901 and the moving rod 2 902 in the left and right directions can be realized, and the centering movement of the moving rod 1 901 and the moving rod 2 902 in the front and back directions can also be realized.

[0104] like Fig.10 As shown, the side punch mechanism 1 in the first side punch station and the side punch mechanism 2 in the second side punch station are located between the moving rod 1 901 and the moving rod 2 902, that is, the first side punch station and the second side punch station are located between the moving rod 1 901 and the moving rod 2 902. At the same time, the loading position 3 can be the upper end of the loading platform, and the unloading position 4 can be the upper end of the unloading platform. During the operation, the workpiece will move successively along the path of the loading position 3, the first punching position 11, the second punching position 21 and the unloading position 4.

[0105] The moving rod 1 901 is provided with three clamping components 1 903 , and the moving rod 2 902 is provided with three clamping components 2 904 ; one clamping component 1 903 and one clamping component 2 904 together constitute a clamping assembly that can clamp a workpiece after centering and moving.

[0106] like Fig.10 As shown, in this embodiment, there are three groups of clamping components, which are respectively the first group of clamping components, the second group of clamping components and the third group of clamping components from left to right, and the left and right lateral spacings between two adjacent groups of clamping components are the same. Fig.10 As shown, the lateral spacing between the two dies in the two side punching stations is equal. The left and right lateral spacing between two adjacent groups of clamping components, the lateral spacing from the loading position 3 to the first punching position 11, the lateral spacing from the second punching position 21 to the unloading position 4, and the lateral spacing between the two dies in the two side punching stations are all equal.

[0107] Specifically, Fig.10As shown, a clamping component 1 903 and a clamping component 2 904 are respectively provided on the front and rear sides of the loading position 3, the first punching position 11, the second punching position 21 and the unloading position 4. When a workpiece is placed in the loading position 3, the first punching position 11 and the second punching position 21 at the same time, after the moving rod 1 901 and the moving rod 2 902 move in alignment, the workpieces in the loading position 3, the first punching position 11 and the second punching position 21 can be clamped by the three groups of clamping components at the same time, and then driven to move synchronously to the right. When the workpiece clamped by the clamping component on the right side of the figure is located above the unloading position 4, the three workpieces can be released synchronously, and the workpiece originally located in the second punching position 21 can be moved to the unloading position 4, and the workpiece originally located in the first punching position 11 can be moved to the second punching position 21, and the workpiece originally located in the loading position 3 can be moved into the first punching position 11.

[0108] In this embodiment, the gripping member 1 903 and the gripping member 2 904 are identical in structure and size. Figure 11-14 The lifting claw robot shown.

[0109] like Fig.11 As shown, the lifting claw manipulator includes a main body connecting part 911, a lifting claw 913, a lifting claw guide block 912, a lifting claw limit block 914, a limit screw 916 and a first spring 915.

[0110] like Fig.11 As shown, an inclined surface is provided on the main connecting member 911, and a lifting claw guide block 912 is arranged on the inclined surface, and a guide groove is provided between the lifting claw guide block 912 and the inclined surface; the lifting claw 913 passes through the guide groove, and the rear end of the lifting claw 913 is connected to the lifting claw limit block 914; the rear end of the lifting claw limit block 914 is connected to the front end of the limit screw 916, and the limit screw 916 is movably connected to the main connecting member 911; the first spring 915 is arranged on the outer circle of the limit screw 916 and is located on the rear side of the lifting claw limit block 914.

[0111] At the same time, if Fig.11As shown, the lifting claw 913 includes an inclined rear portion and a transverse front portion, and the angle between the inclined rear portion and the transverse front portion is an obtuse angle. The front end of the transverse front portion is provided with an arc-shaped slot 920, and the inclined rear portion is movably connected to the guide groove. During the workpiece clamping operation, the arc-shaped slot 920 is pressed against the side wall of the workpiece, the lifting claw 913 is pressed and moved backward, and the inclined rear portion moves backward and upward along the inclined surface on the main connecting member 911, thereby driving the transverse front portion to lift upward. Since the workpiece is clamped by the two lifting claws 913, the workpiece is clamped by the two lifting claws 913 and lifted upward, so that the bottom of the workpiece is in a suspended state, and no friction occurs with other end faces below during the subsequent transverse movement. When the workpiece moves into place, the two lifting claws 913 in the clamping assembly reset and move, release the workpiece, and the workpiece falls downward into the specified position. At the same time, the first spring 915 resets and moves, and the lifting claw 913 resets and moves.

[0112] The clamping assembly in this embodiment can not only clamp the workpiece, but also lift the workpiece upward while clamping it.

[0113] At the same time, preferably, Figure 11-14 As shown, in this embodiment, in the lifting claw manipulator, a pin sensor assembly is also connected to the main connecting member 911. The pin sensor assembly includes a pin 917, a pin guide block 918, a second spring 921, a second spring stop block 922, a photoelectric sensor head 919 and a photoelectric sensor (not shown in the figure). The photoelectric sensor in this embodiment is also a photoelectric sensor.

[0114] Specifically, the ejector guide block 918 is fixedly connected to the main connecting member 911, and the ejector 917 is slidably connected to the ejector guide block 918; the second spring stopper 922 is connected to the ejector 917, and the second spring 921 is arranged on the outer ring of the ejector 917 and is located between the second spring stopper 922 and the ejector guide block 918; the front end of the ejector 917 is located at the rear side of the lifting claw stopper 914; the photoelectric sensing head 919 is connected to the rear end of the ejector 917, and the photoelectric sensor (or "photoelectric sensor") is located at the rear side of the photoelectric sensing head 919. In the process of clamping the workpiece, we will connect the photoelectric sensor to the PLC control system, and the lifting claw 913 will press the workpiece and move upward and backward, and the lifting claw stopper 914 will press the ejector 917 backward, and the ejector 917 will move backward, thereby driving the photoelectric sensing head 919 to move toward the photoelectric sensor. When the photoelectric sensor head 919 enters the sensing range set by the photoelectric sensor, the photoelectric sensor will be triggered, indicating that the mechanical lifting hand has fully grasped the workpiece, and the PLC control system will control the punching system to continue to operate. At the same time, if the mechanical lifting hand has not fully grasped the workpiece, the PLC control system will not receive the corresponding sensing signal, and the operation of the entire punching system can be stopped in time.

[0115] The ejector pin sensing assembly can be used to determine whether the lifting claw 913 has moved into place, and to timely control the operating rhythm of the punching system.

[0116] During operation, when the lifting claw limit block 914 presses the ejector pin 917 backward, the ejector pin 917 will move backward, and at the same time, the second spring limit block 922 will move backward synchronously and squeeze the second spring 921 to shrink it.

[0117] In this embodiment, a workpiece blanking position is provided at the upper end of the workpiece carrier, and after the workpiece is placed in the workpiece blanking position, it will be placed at the upper end of the workpiece carrier and above the die. Figure 3 , 4 As shown, the workpiece 800 is located in the workpiece punching position. At this time, the lower end of the workpiece 800 is placed on the upper end of the workpiece carrier 700, and the lower end opening of the workpiece 800 is facing the upper opening of the die sleeve hole on the workpiece carrier 700. Correspondingly, the workpiece punching position in the first side punching station is the first punching position 11, and the workpiece punching position in the second side punching station is the second punching position 21. The approximate positions are as shown in the specific example. Fig.10 The operation steps of the punching system in the present invention are briefly as follows:

[0118] Step 1: The transfer mechanism transfers the workpiece in the loading platform (i.e., the loading position 3) to the first punching position 11;

[0119] Step 2: The upper mold frame 100 is pressed downward, and the punching module in the first side punching station performs a punching operation on the workpiece located in the first punching station 11, forming a first pair of punching holes on the side wall of the workpiece;

[0120] Step 3: The upper mold frame 100 is reset and moved upward;

[0121] Step 4: The transfer mechanism transfers the workpiece in the first side punching station to the second punching station 21, and transfers the next workpiece in the loading platform to the first punching station 11;

[0122] Step 5: Press the upper mold frame 100 downward;

[0123] Step 6: The punching module in the first side punching station punches the workpiece in the first punching station 11 to form a first pair of punching holes on the side wall of the workpiece; at the same time, the punching module in the second side punching station punches the workpiece in the second punching station 21 to form a second pair of punching holes on the side wall of the workpiece;

[0124] After step six is ​​completed, two pairs of punching holes will exist on the side wall of the workpiece located in the second punching position 21 at the same time, that is, there are four radially distributed punching holes on the side wall of the workpiece.

[0125] Step 7: The upper mold frame 100 is reset and moved upward;

[0126] Step 8: The transfer mechanism transfers the workpiece in the second punching position 21 to the unloading platform (i.e., the unloading position 4), transfers the workpiece in the first punching position 11 to the second punching position 21, and transfers the next workpiece in the loading platform to the first punching position 11;

[0127] Then, in step nine, repeat steps five to eight.

[0128] Through the above steps, each workpiece is first moved from the loading position 3 to the first punching position 11 for punching operation, and after forming a first pair of punching holes in the first punching position 11, it is transferred to the second punching position 21 for a second punching operation, and after forming a second pair of punching holes in the second punching position 21, it is transferred to the unloading position 4. Through the two punching operations in the first side punching station and the second side punching station, four punching holes are radially formed on the side wall of the workpiece entering the unloading position 4.

[0129] The punching operation in the two side punching stations is completed by the punching module located in the side punching station. Specifically, the steps of a single punching module punching the workpiece are as follows (with Figure 3 Take the structure of the punching module as an example):

[0130] First, the workpiece 800 is located in the workpiece punching position, that is, the workpiece 800 is located at the upper end of the workpiece carrier 700 and the lower end of the workpiece 800 is located above the die 300; the pressure equipment drives the upper mold frame 100 to press down, and the push head 606 presses the upper end of the workpiece 800 located on the workpiece carrier 700 from top to bottom, and the four carrier pressing rods 603 press the upper end of the workpiece carrier 700 downward.

[0131] Then, the upper die frame 100 continues to press down, and under the push of the workpiece pressing rod 606, the workpiece 800 and the workpiece carrier block 700 are pressed downward, and the workpiece 800 moves downward and the side wall of the workpiece 800 is pressed against the outer side of the die punching hole. At the same time, the punch side push block 1 403 and the punch side push block 2 503 move downward under the pressure of the push block pressing rod 601, driving the punch fixing block 1 (composed of the punch pressing block 1 401 and the punch fixing seat 1 402) and the punch fixing block 2 (composed of the punch pressing block 2 501 and the punch fixing seat 2 502) to move in the center, thereby driving the punch 1 400 and the punch 2 500 to move in the center and push laterally. When the side wall of the workpiece 800 is located between the die punching hole and the punch (i.e., the side wall of the workpiece 800 is against the outside of the die punching hole), the punch 1 400 and the punch 2 500 are centrally punched to punch out two symmetrical punching holes on the side wall of the workpiece 800, and the cut waste falls into the unloading chamber 303.

[0132] Finally, the pressure device drives the upper die frame 100 to reset and move upward, and each component in the punching module resets and moves. For example, the punch side push block resets and moves upward under the drive of the corresponding side push block spring, and the punch fixed block resets and moves under the action of the corresponding pull rod reset spring; the workpiece carrier 700 resets and moves upward under the action of the carrier reset spring 702.

[0133] In this embodiment, if Figure 2-3 As shown, a lower mounting block 201 is further provided on the upper end of the lower mold frame 200, and the lower mounting block 201 is located below the first slide block 405 and the second slide block 505. At the same time, the lower ends of the first side push block spring 404 and the second side push block spring 504 pass through the lower mounting block 201 downward and are placed in a groove provided on the lower mold frame 200.

[0134] In the present embodiment, the push positioning mechanism also includes two guide pins 602 fixedly connected to the lower end of the upper mold frame 100 through the upper mounting block 101, and a limit socket corresponding to the guide pin 602 is provided at the upper end of the workpiece carrier 700, and the guide pin 602 is located directly above the limit socket. During operation, the workpiece 800 is placed on the upper end of the workpiece carrier 700, and the existing holes on the workpiece 800 are aligned with the limit sockets. When the guide pins 602 move downward, they will be inserted into the holes and the limit sockets on the workpiece 800 in turn to prevent the workpiece 800 from moving radially, thereby achieving the function of locking the position of the workpiece 800. In the present embodiment, before the workpiece 800 is side-punched, a hole has been opened in the workpiece. When the workpiece 800 is placed on the upper end of the workpiece carrier 700 (such as Figure 3 The hole is through-hole and can be aligned with the limit socket.

[0135] The punching module in this embodiment can realize the lateral punching operation of the punch, and each punching module can punch out two punching holes on the side wall of the workpiece at the same time during the one-time pressing process of the upper die frame 100. The two punching holes are symmetrically distributed on the left and right side walls of the workpiece, which is convenient and efficient to operate. The punching system including two groups of punching modules distributed on the left and right sides can realize the operation of forming two pairs of symmetrical punching holes on the workpiece in steps.

[0136] For the specific structure of the punching module, see Figure 3. In the present punching system, the punching module in the first side punching station and the punching module in the second side punching station are the same in structure and size, except that the horizontal placement angles of the two punching modules are different. Specifically, the punching module in the first side punching station is placed and installed as a whole extending along the left-right direction, that is, the two punches in the first side punching station can be punched against each other along the left-right direction, so as to realize the punching operation that the punching module in the first side punching station can form a pair of left-right symmetrical punching holes on the workpiece. The punching module in the second side punching station is placed and installed as a whole extending along the front-to-back direction, that is, the two punches in the first side punching station can be punched against each other along the front-to-back direction, so as to realize the punching operation that the punching module in the second side punching station can form a pair of front-to-back symmetrical punching holes on the workpiece.

[0137] After the same workpiece forms two symmetrical punching holes (the first pair of punching holes) in the first side punching station, it is laterally translated by the transfer mechanism into the second side punching station, and then two symmetrical punching holes (the second pair of punching holes) are formed in the second side punching station. The first pair of punching holes and the second pair of punching holes are located at different parts of the side wall of the same workpiece. After the punching operation of the punching modules in the two side punching stations, the side wall of the same workpiece will form four punching holes evenly distributed in the radial direction, and its structure is as follows: Figure 1 shown.

[0138] Correspondingly, if Fig.10 As shown, the side punching mechanism 1 in the first side punching station and the side punching mechanism 2 in the second side punching station are the same in structure and size, but the horizontal placement angles are different. The side punching mechanism 1 in the first side punching station extends horizontally from left to right as a whole, and the side punching mechanism 2 in the second side punching station extends horizontally from front to back as a whole. Specifically, in the side punching mechanism 1 in the first side punching station, the two die punching holes on the die are distributed left to right, and the two punches can punch and cut in the left and right directions; in the side punching mechanism 2 in the second side punching station, the two die punching holes on the die are distributed front to back, and the two punches can punch and cut in the front to back directions.

[0139] At the same time, the unloading platform can also be composed of an unloading chute and a regular box located below the unloading chute, and the unloading position 4 is located above the unloading chute. In step eight, the transfer mechanism first transfers the workpiece in the second side punching station to the top of the unloading chute, and then releases the workpiece, the workpiece falls into the unloading chute and rolls down, and finally enters the regular box. In addition, we can also use feeding mechanisms such as manipulators to continuously feed the workpieces to the feeding position 3 in sequence, and at the same time connect the feeding mechanism, the power mechanism that drives the upper mold frame to move up and down, and the transfer mechanism to the PLC control system, so that the coordination between the mechanisms can be controlled to realize the continuous punching operation of batch workpieces.

Claims

1. A punching system, characterized in that: It includes an upper die frame and a lower die frame distributed up and down; a first side punching station and a second side punching station distributed left and right are arranged between the upper die frame and the lower die frame; it also includes a loading platform, a unloading platform and a transfer mechanism for transferring workpieces; A group of punching modules with the same structure is respectively arranged in the first side punching station and the second side punching station; each group of punching modules includes a push positioning mechanism connected to the lower end of the upper die frame and a side punching mechanism connected to the upper end of the lower die frame and located below the push positioning mechanism; Each of the side punching mechanisms comprises a die, a workpiece carrier disposed on the outer ring of the die, and two groups of punch assemblies symmetrically distributed on both sides of the die; two die punching holes are symmetrically distributed on the side wall of the die, and the two ends of the die punching holes are horizontally connected; a discharge cavity connected to the die punching holes is also provided in the die; each group of punch assemblies comprises a punch extending horizontally in the direction of the die punching holes; in each group of punching modules, the push positioning mechanism can push the workpiece after pressing down and drive the punch to move; The punching module in the first side punching station is used to form a first pair of punching holes on the side wall of the workpiece, and the punching module in the second side punching station is used to form a second pair of punching holes on different parts of the side wall of the workpiece.

2. A punching system according to claim 1, characterized in that: Each group of the punch assembly also includes a punch fixing block, a slide block, a punch side push block, a reset pull rod and a side stop block; The punch is connected to the punch fixing block and extends laterally in the punching direction of the die; the slide block is provided with a slide groove for the punch fixing block to slide laterally, and the punch fixing block is placed in the slide groove; the punch side push block is located between the side stop block and the punch fixing block, and one end of the punch fixing block facing the punch side push block is provided with a guide slide slope 1, and one end of the punch side push block facing the punch fixing block is provided with a guide slide slope 2 corresponding to the guide slide slope 1; the lower end of the punch side push block is also connected to a longitudinally telescopic side push block spring; One end of the reset rod passes through the side block and the punch side push block in sequence and is connected to the punch fixing block; the other end of the reset rod is provided with a rear blocking part, the side block is also provided with a front blocking part, and a rod reset spring is also connected between the front blocking part and the rear blocking part; the workpiece carrier block is movably connected to the die; a carrier block reset spring is also provided under the workpiece carrier block; Each push positioning mechanism comprises a workpiece push rod located above the workpiece carrier block and a side push block push rod located above the punch side push block.

3. A side punching system according to claim 2, characterized in that: The transfer mechanism comprises a front-to-rear parallel moving rod 1 and a moving rod 2; the left and right ends of the moving rod 1 are respectively connected to a left and right linear guide rail 1 and a left and right linear guide rail 2 for driving the moving rod 1 to move left and right; the left and right ends of the moving rod 2 are respectively connected to a left and right linear guide rail 3 and a left and right linear guide rail 4 for driving the moving rod 2 to move left and right; the left and right linear guide rails 1 and 3 are simultaneously connected to the front and rear linear guide rails 1; the left and right linear guide rails 2 and 4 are simultaneously connected to the front and rear linear guide rails 2; The first side punching station and the second side punching station are located between the moving rod one and the moving rod two; three clamping parts one are provided on the moving rod one, and three clamping parts two are provided on the moving rod two; one clamping part one and one clamping part two together constitute a group of clamping components that can clamp the workpiece after centering movement; the left and right lateral spacings between two adjacent groups of clamping components are the same; and after the moving rod one and the moving rod two are centeringly moved, the three groups of clamping components can simultaneously clamp three different workpieces that are respectively located on the loading platform, the upper end of the workpiece carrier block in the first side punching station, and the upper end of the workpiece carrier block in the second side punching station.

4. A side punching system according to claim 3, characterized in that: The gripping component 1 and the gripping component 2 have the same structure, and are both lifting claw manipulators; the lifting claw manipulator comprises a main body connecting member, a lifting claw, a lifting claw guide block, a lifting claw limit block, a limit screw and a first spring; An inclined surface is provided on the main connecting member, the lifting claw guide block is arranged on the inclined surface, and a guide groove is provided between the lifting claw guide block and the inclined surface; the lifting claw passes through the guide groove, and the rear end of the lifting claw is connected to the lifting claw limit block; the rear end of the lifting claw limit block is connected to the limit screw, and the limit screw is movably connected to the main connecting member; the first spring is arranged on the outer ring of the limit screw and is located at the rear side of the lifting claw limit block; The lifting claw comprises an inclined rear portion and a transverse front portion, and an angle between the inclined rear portion and the transverse front portion is an obtuse angle.

5. A side punching system according to claim 4, characterized in that: The main connecting piece is also connected to an ejector sensing assembly; the ejector sensing assembly includes an ejector, an ejector guide block, a second spring, a second spring stop block, a photoelectric sensing head and a photoelectric sensor; The ejector guide block is fixedly connected to the main connecting piece, and the ejector is slidably connected to the ejector guide block; the second spring limit block is connected to the ejector, and the second spring is arranged on the outer ring of the ejector and is located between the second spring limit block and the ejector guide block; the front end of the ejector is located at the rear side of the lifting claw limit block; the photoelectric sensing head is connected to the rear end of the ejector, and the photoelectric sensor is located at the rear side of the photoelectric sensing head.

6. A punching system according to claim 5, characterized in that: The upper end of the workpiece carrier is also provided with a die sleeve hole which passes through from top to bottom and two parallel protruding ends which protrude upward; a limiting component which limits the further upward movement of the workpiece carrier is also provided above the workpiece carrier; the limiting component is two parallel limiting strips, the limiting strip is located between the two protruding ends, and the die sleeve hole is located between the two limiting strips; the limiting strip extends laterally, and the limiting strip is fixedly connected to the side block.

7. A side punching method, characterized in that: The punching system as claimed in claim 1 is used to complete the process; the upper end of the workpiece carrier is provided with a workpiece punching position, and after the workpiece is placed in the workpiece punching position, it will be placed at the upper end of the workpiece carrier and above the die; the workpiece punching position in the first side punching station is the first punching position, and the workpiece punching position in the second side punching station is the second punching position; the side punching method includes the following steps: Step 1: The transfer mechanism transfers the workpiece in the loading platform to the first punching position; Step 2: The upper mold frame is pressed downward, and the punching module in the first side punching station punches the workpiece in the first punching station to form a first pair of punching holes on the side wall of the workpiece; Step 3: The upper mold frame is reset and moved upward; Step 4: The transfer mechanism transfers the workpiece in the first punching position to the second punching position, and transfers the next workpiece in the loading platform to the first punching position; Step 5: Press down the upper mold frame; Step 6: The punching module in the first side punching station punches the workpiece in the first punching station to form a first pair of punching holes on the side wall of the workpiece; at the same time, the punching module in the second side punching station punches the workpiece in the second punching station to form a second pair of punching holes on the side wall of the workpiece; Step 7: The upper mold frame is reset and moved upward; Step 8: The transfer mechanism transfers the workpiece in the second punching position to the unloading platform, transfers the workpiece in the first punching position to the second punching position, and transfers the next workpiece in the loading platform to the first punching position; Step 9. Repeat steps 5 to 8.

8. A side punching method according to claim 7, characterized in that: Each group of the punch assembly also includes a punch fixing block, a slide block, a punch side push block, a reset pull rod and a side stop block; The punch is connected to the punch fixing block and extends laterally in the punching direction of the die; the slide block is provided with a slide groove for the punch fixing block to slide laterally, and the punch fixing block is placed in the slide groove; the punch side push block is located between the side stop block and the punch fixing block, and one end of the punch fixing block facing the punch side push block is provided with a guide slide slope 1, and one end of the punch side push block facing the punch fixing block is provided with a guide slide slope 2 corresponding to the guide slide slope 1; the lower end of the punch side push block is also connected to a longitudinally telescopic side push block spring; One end of the reset rod passes through the side block and the punch side push block in sequence and is connected to the punch fixing block; the other end of the reset rod is provided with a rear blocking part, the side block is also provided with a front blocking part, and a rod reset spring is also connected between the front blocking part and the rear blocking part; the workpiece carrier block is movably connected to the die; a carrier block reset spring is also provided under the workpiece carrier block; Each set of the push positioning mechanism comprises a workpiece push rod located above the workpiece carrier block and a side push block push rod located above the punch side push block; The steps of punching operation of each punching module on the workpiece are as follows: First, after the upper die frame is pressed down, the workpiece pressing rod presses the upper end of the workpiece located on the workpiece carrier from top to bottom; Then, the upper die frame continues to press down, the workpiece and the workpiece carrier block move downward under the push of the workpiece pressing rod, the punch side push block moves downward under the push of the side push block pressing rod, and the punch fixing block moves horizontally, driving the punch to move horizontally toward the punching direction of the die; Finally, when the side wall of the workpiece is located between the punch holes of the punch and the die, the two punches in the side punch mechanism perform centering punching to form a pair of punch holes on the side wall of the workpiece; After the upper die frame is reset and moved upward, the punch side push block is reset and moved upward driven by the side push block spring, the punch fixing block is reset and moved under the action of the pull rod reset spring, and the workpiece carrier block is reset and moved upward under the action of the carrier block reset spring.

9. A side punching method according to claim 8, characterized in that: The transfer mechanism comprises a front-to-rear parallel moving rod 1 and a moving rod 2; the left and right ends of the moving rod 1 are respectively connected to a left and right linear guide rail 1 and a left and right linear guide rail 2 for driving the moving rod 1 to move left and right; the left and right ends of the moving rod 2 are respectively connected to a left and right linear guide rail 3 and a left and right linear guide rail 4 for driving the moving rod 2 to move left and right; the left and right linear guide rails 1 and 3 are simultaneously connected to the front and rear linear guide rails 1; the left and right linear guide rails 2 and 4 are simultaneously connected to the front and rear linear guide rails 2; The first side punching station and the second side punching station are located between the moving rod one and the moving rod two; three clamping parts one are provided on the moving rod one, and three clamping parts two are provided on the moving rod two; one clamping part one and one clamping part two together constitute a group of clamping components that can clamp the workpiece after centering movement; the left and right lateral spacings between two adjacent groups of clamping components are the same; and after the moving rod one and the moving rod two are centeringly moved, the three groups of clamping components can simultaneously clamp three different workpieces that are respectively located on the loading platform, the upper end of the workpiece carrier block in the first side punching station, and the upper end of the workpiece carrier block in the second side punching station.

10. A side punching method according to claim 9, characterized in that: The clamping component one and the clamping component two have the same structure, and both are lifting claw manipulators; the lifting claw manipulator comprises a main connecting member, a lifting claw, a lifting claw guide block, a lifting claw limit block, a limit screw and a first spring; an inclined surface is provided on the main connecting member, the lifting claw guide block is arranged on the inclined surface, and a guide groove is provided between the lifting claw guide block and the inclined surface; the lifting claw passes through the guide groove, and the rear end of the lifting claw is connected to the lifting claw limit block; the rear end of the lifting claw limit block is connected to the limit screw, and the limit screw is movably connected to the main connecting member; the first spring is arranged on the outer ring of the limit screw and is located at the rear side of the lifting claw limit block; The lifting claw comprises an inclined rear portion and a transverse front portion, and an angle between the inclined rear portion and the transverse front portion is an obtuse angle. During the operation of the moving mechanism moving the workpiece, the three groups of clamping components move left and right synchronously; after the clamping component one and the clamping component two align and clamp the workpiece, the first spring is compressed and contracts, and the lifting claw moves backward and upward, driving the clamped workpiece to be lifted upward.

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