CN117245729B - Punching equipment for automobile sealing strips - Google Patents
Punching equipment for automobile sealing strips Download PDFInfo
- Publication number
- CN117245729B CN117245729B CN202311520051.2A CN202311520051A CN117245729B CN 117245729 B CN117245729 B CN 117245729B CN 202311520051 A CN202311520051 A CN 202311520051A CN 117245729 B CN117245729 B CN 117245729B
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- avoidance
- punching
- hole
- block
- sealing strip
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- 238000004080 punching Methods 0.000 title claims abstract description 158
- 238000007789 sealing Methods 0.000 title claims abstract description 92
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims description 19
- 239000002699 waste material Substances 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/018—Holding the work by suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/02—Means for holding or positioning work with clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to the technical field of part punching and blanking, in particular to automobile sealing strip punching equipment; comprises a punching mechanism driven by a transmission mechanism and a transmission mechanism right below the punching mechanism; the punching mechanism comprises a base and a load piece fixedly connected with the lower end face of the base; a punching head connected below the load piece; the upper end of the transmission mechanism is transmitted with a sealing strip with a gasket inside; the upper surface of the cushion piece is provided with an avoidance hole in the middle in the width direction of the sealing strip; the inner diameter of the avoidance hole is matched with the outer diameter of the punching head; the avoidance holes are multiple; the avoidance holes are arranged at equal intervals in the length direction of the sealing strip; according to the invention, the avoidance hole is used for avoiding the punching head in the process of punching the sealing strip by the punching head, so that the punching head can protect the punching head while finishing the punching process, the punching head is not easy to damage, and the smooth operation of the subsequent sealing strip punching is ensured.
Description
Technical Field
The invention relates to the technical field of punching and blanking of sealing pieces, in particular to automobile sealing strip punching equipment.
Background
The automobile sealing strip is required to be punched by punching equipment to form evenly distributed round holes, and is used for drainage in rainy weather. The automobile sealing strip is an elastic and flexible middle hollow strip-shaped object, the punching efficiency of round holes on the automobile sealing strip is low when manual work is completed, the hole punching depth of the sealing strip is adjusted and controlled poorly by the existing punching equipment, therefore, the patent name is an automobile sealing strip punching equipment, the bottom end of a punching head is used for punching the top of a crawler belt and finally punching the top of a pad, and the device can be used for punching the sealing strip efficiently.
However, the inventor of my department finds out that in the process of punching round holes on the automobile sealing strip by using the technology in the patent, the punching head moving downwards at high speed can cause serious abrasion and even slight deformation in the process of impacting the top of the cushion piece for a long time, and the damaged punching head can influence the punching effect of the round holes on the following automobile sealing strip; the cushion piece is directly replaced by the rigidity and the flexibility, so that the automobile sealing strip is difficult to break to form a round hole.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides the automobile sealing strip punching equipment, and the punching head is avoided in the process of punching the sealing strip by the punching head through the avoiding holes, so that the punching head protects the punching head when the punching process is finished, the punching head is not easy to damage, and the smooth operation of the subsequent sealing strip punching is ensured.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to automobile sealing strip punching equipment, which comprises a punching mechanism driven by a transmission mechanism and a transmission mechanism right below the punching mechanism; the punching mechanism comprises a base and a load piece fixedly connected with the lower end face of the base; a punching head connected below the load piece; the upper end of the transmission mechanism is transmitted with a sealing strip with a gasket inside;
the upper surface of the cushion piece is provided with an avoidance hole in the middle in the width direction of the sealing strip; the inner diameter of the avoidance hole is matched with the outer diameter of the punching head; the avoidance holes are multiple; the avoidance holes are arranged at equal intervals in the length direction of the sealing strip; the avoidance holes are driven by the transmission mechanism to sequentially move to the position right below the punching head; the punching head can enter the corresponding avoidance hole to realize avoidance in the process of punching the sealing strip.
Preferably, the avoidance hole is vertically movably connected with the avoidance block; the lower surface of the avoidance block is connected with the hole bottom of the avoidance hole through a first spring; the upper surface of the avoidance block is matched with the upper surface of the cushion piece under the support of the first spring; the avoidance block pushes out the chips in the avoidance hole under the action of the elasticity of the first spring.
Preferably, the avoidance block is movably and hermetically connected with the avoidance hole; the avoidance block is provided with a one-way air outlet hole in a penetrating way up and down; the bottom of the avoidance hole is communicated with the lower surface of the cushion piece through a one-way air inlet hole; the one-way air inlet hole generates negative pressure in the resetting process of the avoidance block, so that the lower surface of the cushion piece is tightly sucked with the inner wall of the sealing strip.
Preferably, the cross section of the avoidance hole and the avoidance block is circular; the bottom of the avoidance hole is provided with a threaded hole; the screw rod is connected with the threaded hole in a threaded transmission manner; one end of the screw rod close to the upper part is fixedly connected to the lower surface of the avoidance block; the avoidance block rotates and moves downwards in the avoidance hole in the compression process, so that the punching waste material and the sealing strip are torn off in a rotating mode.
Preferably, the pad is in a segment shape; the plurality of cushion pieces are provided with two through holes along the length direction of the sealing strip; a sliding rod is movably connected in the through hole; one end of each sliding rod jointly passes through and is connected with the end block; the end block is of a semicircular structure; the other ends of the two sliding rods are connected with a limiting strip together; the plurality of cushion pieces can move along the axial direction of the sliding rod, so that the distance between adjacent avoidance holes is adjusted.
Preferably, the two slide bars consist of a first slide bar and a second slide bar; one end of the first sliding rod is rotationally connected with the end block through a torsion spring, and the other end of the first sliding rod is rotationally connected with the limit bar; clamping grooves are uniformly formed in the outer wall of the first sliding rod along the axial direction; one of the through hole walls is provided with a groove corresponding to the clamping groove; the clamping block is connected in a sliding way in the groove; the clamping block is connected with the bottom of the groove through a second spring; the clamping block is arranged away from one end face of the second spring in an inclined mode and is partially clamped into the corresponding clamping groove, and therefore the cushion piece is locked with the position of the first sliding rod in the length direction.
Preferably, one end of the second sliding rod is rotationally connected with the end block, and the other end of the second sliding rod is rotationally connected with the limit strip; the outer wall of the second sliding rod is provided with external threads; the other end of the second sliding rod is positioned at the inner side of the limit strip and is in threaded transmission connection with the push plate; the push plate is movably connected with the first sliding rod; third springs are arranged between the push plate and the adjacent cushion, between the two adjacent cushion, and between the end block and the adjacent cushion; the third spring is sleeved on the outer wall of the second sliding rod; the second sliding rod can adjust the distance between two adjacent cushion pieces in the rotating process; one end of each sliding rod is fixedly connected with a knob.
Preferably, the punching head is in a ring sleeve shape, and the lower port is a knife edge; the inner side of the punching head is movably connected with a movable rod; one end of the movable rod, which is close to the upper end, is connected with the load part through a fourth spring; the length of the movable rod is smaller than that of the punching head; the movable rod pushes out scraps on the inner side of the punching head under the action of a fourth spring; the outside of the movable rod is matched with the inner diameter of the punching head.
Preferably, the elastic force of the fourth spring is greater than the elastic force of the first spring; the lower end of the movable rod is provided with a chamfer angle; the movable rod pushes away the avoiding block in advance under the action of the fourth spring and falls into the avoiding hole through the sealing strip, so that the punching head is guided and positioned.
The beneficial effects of the invention are as follows:
1. according to the invention, the avoidance hole is used for avoiding the punching head in the process of punching the sealing strip by the punching head, so that the punching head can protect the punching head while finishing the punching process, the punching head is not easy to damage, and the smooth operation of the subsequent sealing strip punching is ensured.
2. According to the invention, the avoidance block can drive the waste cut by the punching head to rotate through friction in the rotating process, so that the waste and the circular notch of the sealing strip form tearing, and the waste is separated from the circular notch on the sealing strip under the punching action of the punching head and the tearing action of the avoidance block to form a circular hole.
3. According to the invention, the space in the avoidance hole is enlarged to form negative pressure in the upward moving process of the avoidance block, so that the negative pressure is formed by the unidirectional air inlet, and the inner wall of the sealing strip is tightly sucked with the lower surface of the cushion piece in the negative pressure forming process of the unidirectional air inlet, so that the cushion piece cannot shift in the sealing strip, the distance between round holes formed under adjacent punching is kept constant, and the smooth completion of punching of round holes on the follow-up sealing strip is ensured.
Drawings
The invention will be further described with reference to the drawings and embodiments.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic illustration of the position of the fourth spring;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an enlarged view at B in fig. 2;
FIG. 5 is a perspective view of the engagement of the pad with the slide bar;
FIG. 6 is a perspective view of the spacer at another angle to the slide bar;
FIG. 7 is a view showing the position of the screw and the latch according to the present invention;
fig. 8 is an enlarged view at C in fig. 7.
In the figure: the punching mechanism 1, the base 11, the load piece 12, the punching head 13, the movable rod 14, the chamfering 141, the fourth spring 15, the transmission mechanism 2, the cushion 3, the avoidance hole 31, the unidirectional air inlet hole 311, the avoidance block 32, the unidirectional air outlet hole 321, the first spring 33, the threaded hole 34, the screw rod 35, the through hole 36, the groove 37, the clamping block 38, the second spring 39, the sealing strip 4, the sliding rod 5, the limiting strip 51, the torsion spring 52, the clamping groove 53, the push plate 54, the third spring 55 and the end block 6.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 8, the present invention includes the following embodiments:
example 1:
the automobile sealing strip punching equipment comprises a punching mechanism 1 driven by a transmission mechanism and a transmission mechanism 2 right below the punching mechanism 1; the punching mechanism 1 comprises a base 11 and a load piece 12 fixedly connected with the lower end surface of the base 11; a punching head 13 connected below the weight 12; the upper end of the transmission mechanism 2 is transmitted with a sealing strip 4 internally provided with a cushion 3;
the upper surface of the cushion 3 is provided with an avoidance hole 31 in the middle in the width direction of the sealing strip 4; the inner diameter of the avoidance hole 31 is matched with the outer diameter of the punching head 13; the number of the avoidance holes 31 is plural; the avoidance holes 31 are equidistantly arranged at intervals in the length direction of the sealing strip 4; the avoidance holes 31 are driven by the transmission mechanism 2 to sequentially move to the position right below the punching head 13; the punching head 13 can enter the corresponding avoidance hole 31 to realize avoidance in the process of punching the sealing strip 4.
In this embodiment, the avoidance hole 31 is movably connected to the avoidance block 32 up and down; the lower surface of the avoidance block 32 is connected with the hole bottom of the avoidance hole 31 through a first spring 33; the upper surface of the avoidance block 32 is matched with the upper surface of the cushion piece 3 under the support of the first spring 33; the avoidance block 32 pushes out the scraps in the avoidance hole 31 under the elastic force of the first spring 33.
In this embodiment, the avoidance block 32 is movably connected with the avoidance hole 31 in a sealing manner; the avoidance block 32 is provided with a one-way air outlet 321 which penetrates from top to bottom; the bottom of the avoidance hole 31 is communicated with the lower surface of the cushion piece 3 through a one-way air inlet hole 311; the one-way air inlet hole 311 generates negative pressure in the resetting process of the avoidance block 32, so that the lower surface of the cushion piece 3 is tightly sucked with the inner wall of the sealing strip 4.
In this embodiment, the cross section of the avoidance hole 31 and the avoidance block 32 is circular; the bottom of the avoidance hole 31 is provided with a threaded hole 34; the threaded hole 34 is internally and in threaded transmission connection with a screw rod 35; the upper end of the screw rod 35 is fixedly connected to the lower surface of the avoidance block 32; the avoidance block 32 moves downwards in the avoidance hole 31 in a rotation manner in the compression process, so that the punching waste and the sealing strip 4 are torn off in a rotation manner;
when the automobile sealing strip is in operation, the punching head 13 moving downwards at a high speed can be seriously worn and even slightly deformed in the process of impacting the top of the cushion piece 3 for a long time, and the damaged punching head 13 can influence the punching effect of the round holes on the following automobile sealing strip 4; the cushion 3 is directly replaced by the flexibility from rigidity, so that the automobile sealing strip 4 is difficult to break to form a round hole;
therefore, the staff of the invention inserts the cushion 3 into the inner cavity of the sealing strip 4 to form a sealing strip combination, then places the sealing strip combination on the upper surface of the transmission mechanism 2, then starts the controller in the punching equipment, the controller is used for controlling the automatic operation of the punching equipment, the controller can drive the transmission mechanism 2 to work, the transmission mechanism 2 can move the first avoidance hole 31 on the cushion 3 to the position right below the punching head 13, then the controller controls the transmission mechanism to drive the punching mechanism 1 to move downwards, the base 11, the load part 12 and the punching head 13 in the punching mechanism 1 move downwards under the control of the controller, the lower end of the punching head 13 is contacted with the upper surface of the sealing strip 4 after moving downwards, and as the punching head 13 moves downwards, the punching head 13 can press the avoidance block 32 against the elastic force of the first spring 33 and enter into the avoidance hole 31 through the upper surface of the sealing strip 4, and the upper surface of the sealing strip 4 is broken at the lower part of the punching head 13;
with the continuous downward movement of the punching head 13, the avoidance block 32 can extrude the gas in the avoidance hole 31, so that the gas in the avoidance hole 31 is compressed and discharged along the unidirectional gas outlet 321, the gas flow washes away the fragments cut by the punching head 13, the punching head 13 extrudes the avoidance block 32 through the unbroken sealing strip 4, the avoidance block 32 can drive the screw rod 35 to synchronously move downwards, the screw rod 35 can carry out screw transmission with the threaded hole 34 in the downward movement process, the screw rod 35 can rotate and move downwards under the screw transmission, the screw rod 35 can drive the avoidance block 32 to rotate and move downwards in the avoidance hole 31, the avoidance block 32 can drive the waste cut by the punching head 13 to rotate through friction in the rotation process, so that the waste forms tearing with the circular notch of the sealing strip 4, and the round hole is formed after the waste is separated from the circular notch on the sealing strip 4 under the punching action of the punching head 13 and the tearing action of the avoidance block 32;
the controller can control the punched punching head 13 to move upwards and away from the transmission mechanism 2, the transmission mechanism 2 can drive the sealing strip 4 internally provided with the cushion piece 3 to move continuously, so that the next avoidance hole 31 of the cushion piece 3 moves to be right below the punching head 13, the controller can control the punching head 13 to move downwards again to realize punching of the next round hole of the sealing strip 4, the avoidance block 32 in the last avoidance hole 31 moves upwards under the action of the first spring 33, the upper surface of the avoidance block 32 moves upwards under the action of inertia after being flushed with the upper surface of the cushion piece 3 under the action of elastic force, the avoidance block 32 pushes out scraps in the avoidance hole 31 in the upward movement process, and the upper surface of the avoidance block 32 is restored to the initial state after the avoidance block 32 is balanced under the action of the first spring 33 and the self gravity, so that the upper surface of the avoidance block 32 is flush with the upper surface of the cushion piece 3;
after the sealing strip 4 is punched with a round hole, the transmission mechanism 2 drives the sealing strip 4 to move on the upper surface of the sealing strip, the avoidance block 32 moves upwards under the action of the first spring 33 to reset, the space in the avoidance hole 31 is enlarged to form negative pressure in the upward moving process of the avoidance block 32, the one-way air inlet hole 311 forms negative pressure, and the inner wall of the sealing strip 4 is tightly sucked with the lower surface of the sealing strip 3 in the negative pressure forming process of the one-way air inlet hole 311 due to the limited clearance between the lower surface of the sealing strip 3, so that the sealing strip 3 cannot shift in the sealing strip 4, the distance between round holes formed under adjacent punching is kept constant, the round holes on the following sealing strip 4 are smoothly punched, and the avoidance block 32 is only reset in the avoidance hole 31 slowly and cannot reset, so that the impurity in the avoidance hole 31 cannot be pushed out; after punching all round holes on the sealing strip 4, the cushion 3 is pulled out from the inner cavity of the sealing strip 4;
according to the invention, the avoidance holes 31 avoid the punching head 13 in the process of punching the sealing strip 4 by the punching head 13, so that the punching head 13 protects the punching head 13 while the punching process is finished, the punching head 13 is not easy to damage, and the smooth operation of the subsequent punching of the sealing strip 4 is ensured.
Example 2, this example differs from example 1 in that:
the pad 3 is in a segment shape; the plurality of cushion pieces 3 are provided with two through holes 36 along the length direction of the sealing strip 4; the through hole 36 is movably connected with the slide bar 5; one end of the two sliding rods 5 jointly passes through and is connected with an end block 6; the end block 6 is of a semicircular structure; the other ends of the two slide bars 5 are connected with a limit bar 51; the plurality of cushion pieces 3 can move along the axial direction of the slide rod 5, so that the distance between the adjacent avoidance holes 31 is adjusted.
In this embodiment, the two slide bars 5 are composed of a first slide bar and a second slide bar; one end of the first sliding rod is rotationally connected with the end block 6 through a torsion spring 52, and the other end of the first sliding rod is rotationally connected with a limit strip 51; clamping grooves 53 are uniformly formed in the outer wall of the first sliding rod along the axial direction; a groove 37 corresponding to the clamping groove 53 is formed in the wall of one through hole 36; the groove 37 is connected with a clamping block 38 in a sliding way; the clamping block 38 is connected with the bottom of the groove 37 through a second spring 39; the clamping block 38 is arranged away from one end face of the second spring 39 in an inclined way and is partially clamped into the corresponding clamping groove 53, so that the cushion piece 3 and the first sliding rod are locked in the length direction.
In this embodiment, one end of the second sliding rod is rotatably connected with the end block 6, and the other end is rotatably connected with the limit strip 51; the outer wall of the second sliding rod is provided with external threads; the other end of the second sliding rod is positioned at the inner side of the limit strip 51 and is in threaded transmission connection with the push plate 54; the push plate 54 is movably connected with the first slide bar; third springs 55 are arranged between the push plate 54 and the adjacent cushion 3, between the two adjacent cushion 3, and between the end block 6 and the adjacent cushion 3; the third spring 55 is sleeved on the outer wall of the second sliding rod; the second slide bar can adjust the distance between two adjacent cushion pieces 3 in the rotating process; one end of the two slide bars 5 is fixedly connected with a knob;
when the gasket 3 is inserted into the inner cavity of the sealing strip 4, the distance between adjacent avoidance holes 31 is adjusted according to the punching distance requirement of round holes on the sealing strip 4, specifically, a knob connected with a first slide bar is rotated, so that the first slide bar is driven to rotate, the rotating first slide bar can overcome the torsion force of a torsion spring 52 to drive a clamping groove 53 to squeeze one end inclined surface of a clamping block 38, the clamping block 38 can overcome a second spring 39 to retract into a groove 37 under the extrusion of the rotating clamping groove 53, one end of the clamping block 38 is moved out of the clamping groove 53, and the unlocking of the axial freedom degree of the gasket 3 and the first slide bar is realized;
the staff can rotate a knob connected with the second slide bar so as to drive the second slide bar to rotate, the second slide bar drives the push plate 54 to approach or separate from the end block 6 through spiral transmission in the rotation process of the second slide bar, the distance between the push plate 54 and the end block 6 can be reduced in the process that the push plate 54 approaches the end block 6, so that a plurality of third springs 55 are extruded, the plurality of third springs 55 are compressed after being compressed, the distances between the push plate 54 and the adjacent cushion 3, between the two adjacent cushion 3 and between the end block 6 and the adjacent cushion 3 are reduced, the distance between the adjacent avoidance holes 31 is reduced, the distance between the push plate 54 and the end block 6 is increased in the process that the push plate 54 is separated from the end block 6, so that the plurality of third springs 55 are unfolded under the elastic force, the distances between the push plate 54 and the adjacent cushion 3, the two adjacent cushion 3 and the distance between the end block 6 and the adjacent cushion 3 are increased, and the distance between the adjacent avoidance holes 31 is increased;
so only need rotate the second slide bar and can control pad 3 along second slide bar axial motion to accomplish the distance between the adjacent hole of dodging 31 that changes, then the staff unclamps first slide bar, first slide bar rotates the reduction under the effect of torsional spring 52, recess 37 on the pad 3 corresponds at the corresponding draw-in groove 53 of rotation after the reduction, second spring 39 can promote fixture block 38 and keep away from the recess 37 tank bottom, make fixture block 38 one end by second spring 39 card income draw-in groove 53 again, realize the locking of pad 3 and first slide bar, make pad 3 along first slide bar axial motion degree of freedom by the locking, so make the distance between the adjacent hole of dodging 31 obtain the locking, guarantee that sealing strip 4 stably accomplishes the die-cut process of equidistant round hole.
Example 3, this example differs from example 1 in that:
the punching head 13 is in a ring sleeve shape, and the lower port is a knife edge; the inner side of the punching head 13 is movably connected with a movable rod 14; the upper end of the movable rod 14 is connected with the weight 12 through a fourth spring 15; the length of the movable rod 14 is smaller than that of the punching head 13; the movable rod 14 pushes out scraps inside the punching head 13 under the action of the fourth spring 15; the outer periphery of the movable rod 14 is matched with the inner diameter of the punching head 13.
In this embodiment, the elastic force of the fourth spring 15 is greater than the elastic force of the first spring 33; the lower end of the movable rod 14 is provided with a chamfer 141; the movable rod 14 pushes away the avoiding block 32 in advance under the action of the fourth spring 15 and falls into the avoiding hole 31 through the sealing strip 4, so that the punching head 13 is guided and positioned;
when the movable rod 14 in the initial state protrudes out of the punching head 13, after the transmission mechanism 2 drives the avoidance hole 31 on the upper surface of the cushion piece 3 to move to the position right below the punching head 13, the controller controls the punching head 13 to move downwards for punching, the punching head 13 moves downwards to drive the fourth spring 15 and the movable rod 14 to move downwards, the lower end of the movable rod 14 is abutted against the avoidance block 32 through the upper surface of the sealing strip 4 in the downward movement process, and as the fourth spring 15 is larger than the first spring 33 and the lower end of the movable rod 14 is provided with the chamfer 141, the lower end of the movable rod 14 overcomes the elasticity of the first spring 33 to press the avoidance block 32 to the avoidance hole 31 through the sealing strip 4 under the guiding action of the chamfer 141;
because the sealing strip 4 is not cut by punching, the lower end of the movable rod 14 can only extrude part of the sealing strip 4 to be recessed into the avoidance hole 31, so that guiding is performed for the subsequent punching process of downward moving the punching head 13, the punching head 13 enters the avoidance hole 31 in the punching process to smoothly finish avoidance, and the avoidance accuracy is ensured; in the punching process of the punching head 13, the movable rod 14 overcomes the defect that the fourth spring 15 enters the inner side of the punching head 13 to form avoidance, so that the movable rod 14 is prevented from obstructing the punching of the punching head 13; and after the controller controls the punching head 13 and the movable rod 14 to move out of the corresponding avoidance hole 31, the fourth spring 15 pushes the movable rod 14 to extend out of the inner side of the punching head 13 under the action of self elastic force, so that the chips remained on the inner side of the punching head 13 are pushed out, and the influence of the chips remained on the inner side of the punching head 13 on the punching effect of the punching head 13 is avoided.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention, and furthermore, the terms "first", "second", "third", etc. are merely used for distinguishing the description, and should not be construed as indicating or implying relative importance.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A punching device for automobile sealing strips comprises a punching mechanism driven by a transmission mechanism and a transmission mechanism right below the punching mechanism; the punching mechanism comprises a base and a load piece fixedly connected with the lower end face of the base; a punching head connected below the load piece; the upper end of the transmission mechanism is transmitted with a sealing strip with a gasket inside; the method is characterized in that:
the upper surface of the cushion piece is provided with an avoidance hole in the middle in the width direction of the sealing strip; the inner diameter of the avoidance hole is matched with the outer diameter of the punching head; the avoidance holes are multiple; the avoidance holes are arranged at equal intervals in the length direction of the sealing strip; the avoidance holes are driven by the transmission mechanism to sequentially move to the position right below the punching head; the punching head can enter the corresponding avoidance hole to realize avoidance in the process of punching the sealing strip;
the avoidance hole is vertically movably connected with the avoidance block; the lower surface of the avoidance block is connected with the hole bottom of the avoidance hole through a first spring; the upper surface of the avoidance block is matched with the upper surface of the cushion piece under the support of the first spring; the avoidance block pushes out the scraps in the avoidance hole under the action of the elasticity of the first spring;
the avoidance block is movably and hermetically connected with the avoidance hole; the avoidance block is provided with a one-way air outlet hole in a penetrating way up and down; the bottom of the avoidance hole is communicated with the lower surface of the cushion piece through a one-way air inlet hole; the one-way air inlet hole generates negative pressure in the resetting process of the avoidance block, so that the lower surface of the cushion piece is tightly sucked with the inner wall of the sealing strip;
the pad is in a segment shape; the plurality of cushion pieces are provided with two through holes along the length direction of the sealing strip; a sliding rod is movably connected in the through hole; one end of each sliding rod jointly passes through and is connected with the end block; the end block is of a semicircular structure; the other ends of the two sliding rods are connected with a limiting strip together; the plurality of cushion pieces can move along the axial direction of the sliding rod, so that the distance between adjacent avoidance holes is adjusted.
2. The automotive weatherstrip die cutting apparatus of claim 1, wherein: the cross sections of the avoidance holes and the avoidance blocks are all round; the bottom of the avoidance hole is provided with a threaded hole; the screw rod is connected with the threaded hole in a threaded transmission manner; one end of the screw rod close to the upper part is fixedly connected to the lower surface of the avoidance block; the avoidance block rotates and moves downwards in the avoidance hole in the compression process, so that the punching waste material and the sealing strip are torn off in a rotating mode.
3. The automotive weatherstrip die cutting apparatus according to claim 2, characterized in that: the two sliding rods consist of a first sliding rod and a second sliding rod; one end of the first sliding rod is rotationally connected with the end block through a torsion spring, and the other end of the first sliding rod is rotationally connected with the limit bar; clamping grooves are uniformly formed in the outer wall of the first sliding rod along the axial direction; one of the through hole walls is provided with a groove corresponding to the clamping groove; the clamping block is connected in a sliding way in the groove; the clamping block is connected with the bottom of the groove through a second spring; the clamping block is arranged away from one end face of the second spring in an inclined mode and is partially clamped into the corresponding clamping groove, and therefore the cushion piece is locked with the position of the first sliding rod in the length direction.
4. A vehicle weatherstrip die cutting apparatus according to claim 3, wherein: one end of the second sliding rod is rotationally connected with the end block, and the other end of the second sliding rod is rotationally connected with the limit strip; the outer wall of the second sliding rod is provided with external threads; the other end of the second sliding rod is positioned at the inner side of the limit strip and is in threaded transmission connection with the push plate; the push plate is movably connected with the first sliding rod; third springs are arranged between the push plate and the adjacent cushion, between the two adjacent cushion, and between the end block and the adjacent cushion; the third spring is sleeved on the outer wall of the second sliding rod; the second slide bar can adjust the distance between two adjacent cushion pieces in the rotating process.
5. The automotive weatherstrip die cutting apparatus of claim 4, wherein: the punching head is in a ring sleeve shape, and the lower port is a knife edge; the inner side of the punching head is movably connected with a movable rod; one end of the movable rod, which is close to the upper end, is connected with the load part through a fourth spring; the length of the movable rod is smaller than that of the punching head; the movable rod pushes out scraps on the inner side of the punching head under the action of the fourth spring.
6. The automotive weatherstrip die cutting apparatus of claim 5, wherein: the elastic force of the fourth spring is larger than that of the first spring; the lower end of the movable rod is provided with a chamfer angle; the movable rod pushes away the avoiding block in advance under the action of the fourth spring and falls into the avoiding hole through the sealing strip, so that the punching head is guided and positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311520051.2A CN117245729B (en) | 2023-11-15 | 2023-11-15 | Punching equipment for automobile sealing strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311520051.2A CN117245729B (en) | 2023-11-15 | 2023-11-15 | Punching equipment for automobile sealing strips |
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| Publication Number | Publication Date |
|---|---|
| CN117245729A CN117245729A (en) | 2023-12-19 |
| CN117245729B true CN117245729B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311520051.2A Active CN117245729B (en) | 2023-11-15 | 2023-11-15 | Punching equipment for automobile sealing strips |
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| CN219095340U (en) * | 2022-12-23 | 2023-05-30 | 东信和平科技股份有限公司 | Strip module punching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR1387203A (en) * | 1962-12-17 | 1965-01-29 | Royal Packaging Equipment | Packaging machine and process |
| JPH0529697U (en) * | 1991-09-27 | 1993-04-20 | 池田物産株式会社 | Drilling device |
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| Publication number | Publication date |
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| CN117245729A (en) | 2023-12-19 |
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