New automatic stripping stamping die with rotatable die core

Abstract

The invention discloses a novel automatic strip pasting stamping die with a rotatable die core, comprising an upper die, a lower die, an automatic damping strip feeding mechanism for conveying a damping strip and an automatic riveting brush feeding mechanism for conveying a riveting brush, an upper die is provided with an automatic material cutting and pasting mechanism, the automatic material cutting and pasting mechanism comprises a main shaft rotatably arranged on the upper die, a ratchet connected to the main shaft through a pin key, a cutter disc connected to the main shaft through a pin key, a ratchet rotation driving mechanism for driving the ratchet and the cutter disc to rotate, and a rotation-in-place positioning mechanism for positioning after the cutter disc rotates, the cutter disc is located below the ratchet, the cutter disc is provided with a plurality of upright blades, the blades are evenly arranged on the cutter disc in a circular ring shape, the cutter disc is located directly above the damping strip and the riveting brush input on the lower die, and the automatic material cutting and pasting mechanism also comprises a discharge mechanism for ejecting the damping strip sheet in the blade and pasting it to the corresponding position of the riveting brush. The invention can improve the product qualification rate and production efficiency.

Description

Technical Field

[0001] The invention relates to a mould, in particular to a novel automatic stripping stamping mould with a rotatable mould core. Background Art

[0002] Traditional brush strip processing usually adopts the manual stripping method. The riveted brush is a single piece and needs to be manually picked up piece by piece with tweezers and placed in the stripping fixture for positioning. Then the damping strips are removed piece by piece with tweezers and pasted on the required fixed position of the brush arm. After pasting, the riveted brushes are taken out piece by piece and placed in a qualified product container.

[0003] The manual operation process is relatively cumbersome. Workers need to use tweezers to pick up the brushes one by one and put them into the fixture. Since the brushes are thin and small, they greatly affect the operation speed. Similarly, when clamping the damping strips, it is also time-consuming to stick the damping strips straight. After working for a period of time, workers will suffer from visual fatigue, energy consumption, and distraction, resulting in lower and lower subsequent work efficiency, and it is impossible to guarantee product quality and qualified rate. The manual stripping process requires four steps. Under normal circumstances, the average per capita stripping efficiency is about 5 pieces per minute, a total of about 300 pieces per hour. Calculated as an 8-hour work day, a worker will have a total of about 2,400 pieces per day. It is difficult to meet market demand with such production.

[0004] Therefore, there is an urgent need in the prior art for an automatic stripping stamping die that can improve product qualification rate and production efficiency. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new type of automatic stripping stamping die with a rotatable die core which can improve product qualification rate and production efficiency.

[0006] The present invention is realized through the following technical scheme: a new type of automatic strip pasting stamping die with a rotatable mold core, comprising an upper mold, a lower mold, an automatic damping strip feeding mechanism for conveying a damping strip and an automatic riveting brush feeding mechanism for conveying a riveting brush, the upper mold is provided with an automatic material cutting and strip pasting mechanism, the automatic material cutting and strip pasting mechanism comprises a main shaft rotatably arranged on the upper mold, a ratchet connected to the main shaft through a pin key, a cutter disc connected to the main shaft through a pin key, a ratchet rotation driving mechanism for driving the ratchet and the cutter disc to rotate, and a rotation into position positioning mechanism for positioning after the cutter disc rotates, the cutter disc is located below the ratchet, the cutter disc is provided with a plurality of upright blades, which are evenly arranged on the cutter disc in a circular ring shape, the cutter disc is located directly above the damping strip and the riveting brush input on the lower mold, the automatic material cutting and strip pasting mechanism also comprises a discharge mechanism for ejecting the damping strip sheet in the blade and pasting it to the corresponding position of the riveting brush.

[0007] The ratchet rotation drive mechanism includes a slider arranged on the upper mold, a return spring arranged on the rear end of the slider, a roller arranged on the front end of the slider and an inclined wedge connected to the lower mold, the inclined wedge extends upward to the upper mold, the roller contacts the inclined surface of the inclined wedge, the slider is connected to a pawl via a rotating shaft and a return spring, and the pawl cooperates with the ratchet link.

[0008] A pawl groove is provided on the side of the sliding block, and the pawl is installed in the pawl groove.

[0009] The rotation-to-position positioning mechanism includes a plurality of positioning grooves evenly arranged on the outer circumference of the cutter disc, a pre-positioning member arranged on the outer circumference of the cutter disc corresponding to the positioning grooves, and a positioning pin arranged on the outer circumference of the cutter disc corresponding to the positioning grooves.

[0010] The upper die includes an upper die seat, an upper clamping plate, a pad, a bearing fixing plate and a stripping plate which are arranged in sequence from top to bottom. The upper die seat is connected to the upper clamping plate by a first connecting bolt of the upper die, the bearing fixing plate is connected to the stripping plate by a second connecting bolt of the upper die, and the bearing fixing plate is connected to the pad by a third connecting bolt of the upper die. A stripping spring is arranged in the spring hole of the upper die seat, and a contour sleeve is arranged at the lower end of the stripping spring. The contour sleeve passes through the through hole of the upper clamping plate and extends downward, and the lower end surface of the contour sleeve abuts against the upper surface of the pad, and a locking bolt passes through the bearing fixing plate, the pad and the contour sleeve in sequence upward to be connected.

[0011] The unloading mechanism includes a push rod spring arranged in the upper die seat mounting hole and a push rod arranged at the lower end of the push rod spring. The push rod is downwardly penetrated through the upper clamping plate, the pad and the bearing fixing plate in sequence, and the lower end of the push rod is opposite to one of the cutting edges.

[0012] The main shaft is inserted into the pad, the bearing fixing plate and the stripping plate, an upper locking shaft plate is arranged in the middle through hole of the upper clamping plate, the upper end of the main shaft is connected to the upper locking shaft plate by an upper bolt, the upper locking shaft plate is located above the pad, a pressure bearing is arranged between the upper locking shaft plate and the pad, a first main shaft bearing is arranged between the main shaft and the pad, the ratchet is located in the middle shaft hole of the bearing fixing plate, a second main shaft bearing is arranged between the main shaft and the bearing fixing plate, the cutter disc is located in the middle shaft hole of the stripping plate, and the main shaft is connected to a lower locking shaft plate by a lower bolt below the cutter disc.

[0013] A guide sleeve and a guide column are also arranged between the upper die and the lower die.

[0014] The damping strip automatic feeding mechanism and the riveting brush automatic feeding mechanism are both roller-type feeding mechanisms.

[0015] The lower die comprises a lower die base, a lower pad and a lower mold plate which are arranged in sequence from bottom to top. The lower die base, the lower pad and the lower mold plate are connected with each other through lower die connecting bolts.

[0016] The beneficial effects of the present invention are as follows: the application of the present invention changes the traditional manual stripping to automatic mold stripping, and the quality and production efficiency of the product are improved. The quality qualification rate of the product is increased from the original 90% to 99.9%, and the production efficiency is increased from the original 300 pieces per person per hour to 13,800 pieces per mold per hour, which is 45 times higher than the original manual stripping. It saves 97.8% of labor costs and 97.8% of time costs for actual production, reduces the scrap rate by 9.9%, solves the problems of low production capacity, large demand for workers, slow delivery, etc., meets the market's production capacity needs, and improves market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first side structural schematic diagram of the present invention;

[0018] Figure 2 It is a second side structural schematic diagram of the present invention;

[0019] Figure 3 It is a top view schematic diagram of the present invention;

[0020] Figure 4 This is a structural diagram of an automatic material cutting and stripping mechanism;

[0021] Figure 5 is a schematic diagram of the structure of a ratchet rotation drive mechanism;

[0022] Figure 6 It is a structural diagram of the coordination between the ratchet and the cutter disc.

[0023] In the figure: 1-guide sleeve; 2-guide column; 3-knife disc; 4-first spindle bearing; 5-ratchet; 6-second spindle bearing; 7-pressure bearing; 8-upper locking plate; 9-die handle; 10-screw plug; 11-unloading spring; 12-equal height sleeve; 13-spindle; 14-slider; 15-pin key; 16-knife edge; 17-lower locking plate; 18-guide plate; 19-wedge; 20-locking bolt; 21-roller; 22-upper die seat; 23-upper clamping plate; 24-shim plate; 25-bearing fixing plate; 26-stripping plate; 27-lower die plate; 28 -lower pad; 29-lower die seat; 30-positioning pin; 31-damping strip; 32-riveting brush automatic feeding mechanism; 33-pre-positioning member; 34-damping strip; 35-pawl; 36-elevator spring; 37-riveting brush; 38-first connecting bolt of upper die; 39-reset spring; 40-elevator; 41-second connecting bolt of upper die; 42-third connecting bolt of upper die; 43-connecting bolt of lower die; 44-upper bolt; 45-lower bolt; 46-die handle bolt; 47-pawl groove; 48-positioning groove; 49-damping strip automatic feeding mechanism. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-Figure 5 As shown, a new type of automatic strip pasting stamping die with a rotatable mold core includes an upper mold, a lower mold, an automatic damping strip feeding mechanism 49 for conveying a damping strip 34 and an automatic riveting brush feeding mechanism 32 for conveying a riveting brush 37. The upper mold is provided with an automatic material cutting and strip pasting mechanism, which includes a main shaft 13 rotatably arranged on the upper mold, a ratchet 5 connected to the main shaft 13 through a pin key 15, a cutter disc 3 connected to the main shaft 13 through a pin key 15, and a drive mechanism for driving the ratchet 5. The ratchet rotation driving mechanism rotates with the cutter disc 3 and the rotation into position positioning mechanism is used to position the cutter disc 3 after it rotates. The cutter disc 3 is located below the ratchet 5. The cutter disc 3 is provided with a plurality of upright cutting edges 16. These cutting edges 16 are evenly arranged on the cutter disc 3 in a circular shape. The cutter disc 3 is located directly above the damping strip 34 and the riveting brush 37 input on the lower die. The automatic cutting and strip sticking mechanism also includes a unloading mechanism for ejecting the damping strip 31 in the cutting edge 16 and sticking it to the corresponding position of the riveting brush 37.

[0026] The present invention can automatically complete the working process of material conveying, material cutting of the damping strip 34, and attaching the damping strip sheet 31 to the corresponding position of the riveting brush 37. During operation, the damping strip 34 is fed into the mold by the damping strip automatic feeding mechanism 49, and the riveting brush 37 is fed into the mold by the riveting brush automatic feeding mechanism 32. The damping strip 34 and the riveting brush 37 are located parallel to each other on the lower mold, and the lower mold is provided with a material guide plate 18 to ensure that the material is in the correct position.

[0027] like Figure 2 , Figure 5 , Figure 6 As shown, the ratchet rotation drive mechanism includes a slider 14 disposed on the upper die, a reset spring 39 disposed at the rear end of the slider 14, a roller 21 disposed at the front end of the slider 14, and an inclined wedge 19 connected to the lower die, the inclined wedge 19 extends upward to the upper die, the roller 21 contacts the inclined surface of the inclined wedge 19, the slider 14 is connected to a pawl 35 through a rotating shaft and a reset spring, and the pawl 35 is linked to the ratchet 5. A pawl groove 47 is disposed on the side of the slider 14, and the pawl 35 is installed in the pawl groove 47.

[0028] like Figure 3 , Figure 4 As shown, the rotation-to-position positioning mechanism includes a plurality of positioning grooves 48 evenly arranged on the outer circumference of the cutter disc 3, a pre-positioning member 33 arranged on the outer circumference of the cutter disc 3 corresponding to the positioning grooves 48, and a positioning pin 30 arranged on the outer circumference of the cutter disc 3 corresponding to the positioning grooves 48. The outer circumference of the cutter disc 3 has eight equally divided positioning grooves 48, and the positioning grooves 48 and the ratchet 5 each have eight indexing teeth.

[0029] like Figure 1 , Figure 2 As shown, the upper die includes an upper die base 22, an upper clamping plate 23, a pad 24, a bearing fixing plate 25 and a stripping plate 26 which are arranged in sequence from top to bottom. The upper die base 22 is connected to the upper clamping plate 23 by the first upper die connecting bolt 38, the bearing fixing plate 25 is connected to the stripping plate 26 by the second upper die connecting bolt 41, and the bearing fixing plate 25 is connected to the pad 24 by the third upper die connecting bolt 42. A stripping spring 11 is arranged in the spring hole of the upper die base 22, and a contour sleeve 12 is arranged at the lower end of the stripping spring 11. The contour sleeve 12 extends downward through the through hole of the upper clamping plate 23, and the lower end surface of the contour sleeve 12 abuts against the upper surface of the pad 24. A locking bolt 20 passes through the bearing fixing plate 25 and the pad 24 upward in sequence to be connected to the contour sleeve 12.

[0030] like Figure 2 As shown, the unloading mechanism includes a push rod spring 36 arranged in the mounting hole of the upper mold base 22 and a push rod 40 arranged at the lower end of the push rod spring 36. The push rod 40 is downwardly penetrated through the upper clamping plate 23, the pad 24 and the bearing fixing plate 25 in sequence, and the lower end of the push rod 40 is opposite to a knife edge 16.

[0031] The main shaft 13 is passed through the pad 24, the bearing fixing plate 25 and the stripping plate 26. The upper locking shaft plate 8 is arranged in the middle through hole of the upper clamping plate 23. The upper end of the main shaft 13 is connected to the upper locking shaft plate 8 through the upper bolt 44. The upper locking shaft plate 8 is located above the pad 24. A pressure bearing 7 is arranged between the upper locking shaft plate 8 and the pad 24. A first main shaft bearing 4 is arranged between the main shaft 13 and the pad 24. The ratchet 5 is located in the middle shaft hole of the bearing fixing plate 25. A second main shaft bearing 6 is arranged between the main shaft 13 and the bearing fixing plate 25. The cutter disc 3 is located in the middle shaft hole of the stripping plate 26. The main shaft 13 is connected to the lower locking shaft plate 17 through the lower bolt 45 below the cutter disc 3.

[0032] In the present invention, a guide sleeve 1 and a guide column 2 are further provided between the upper die and the lower die. A die handle 9 is provided at the middle of the upper end of the upper die seat 22 through a die handle bolt. A screw plug 10 is provided at the upper end of the unloading spring 11.

[0033] The damping strip automatic feeding mechanism 49 and the riveting brush automatic feeding mechanism 32 are both roller-type feeding mechanisms, and both drive the material forward through an upper and a lower pair of rollers, and the rollers are driven by motors.

[0034] See also Figure 1 , Figure 2 The lower die includes a lower die base 29, a lower pad 28 and a lower mold plate 27 which are arranged in sequence from bottom to top. The lower die base 29, the lower pad 28 and the lower mold plate 27 are connected by lower die connecting bolts 43.

[0035] When the upper die moves downward, the wedge 19 first acts on the roller 21, causing the slider 14 to move while compressing the reset spring 39. The upper die continues to move downward, and the blade 16 above the damping strip 34 cuts the damping strip 34 into sheets under the action of pressure, and the damping strip sheet 31 is stuck in the blade 16. The upper die continues to move downward, and under the action of the ejector 40, the damping strip 34 in the blade 16 above the riveted brush 37 is ejected and attached to the brush arm (this step is after the damping strip 34 is punched four times, and the damping strip 34 is rotated and sent to this station by the cutter disc 3), completing a strip attachment action. When the upper die moves upward, the above-mentioned parts are reset. At the same time, under the action of the reset spring 39, the slider 14 and the pawl 35 push the ratchet 5 to make the knife disc 3 rotate 45° counterclockwise to the required position and be pre-positioned by the pre-positioner. At the same time, the positioning pin 30 driven by the driving mechanism is inserted into the positioning groove 48 for positioning, waiting for the next cycle punching action.

[0036] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A new type of automatic stripping stamping die with a rotatable die core, characterized in that: The new automatic strip pasting stamping die with a rotatable mold core comprises an upper mold, a lower mold, an automatic damping strip feeding mechanism for conveying damping strips and an automatic riveting brush feeding mechanism for conveying riveting brushes. The upper mold is provided with an automatic material cutting and strip pasting mechanism, and the automatic material cutting and strip pasting mechanism comprises a main shaft rotatably arranged on the upper mold, a ratchet connected to the main shaft through a pin key, a cutter disc connected to the main shaft through a pin key, a ratchet rotation driving mechanism for driving the ratchet and the cutter disc to rotate, and a rotation into position positioning mechanism for positioning the cutter disc after rotation. The cutter disc is located below the ratchet, and the cutter disc is provided with a plurality of upright cutting edges. The knife edges are evenly arranged in a circular ring shape on the knife disc, and the knife disc is located directly above the damping strip and the riveting brush input on the lower die. The automatic cutting and strip sticking mechanism also includes a unloading mechanism for ejecting the damping strip in the knife edge and sticking it to the corresponding position of the riveting brush; the ratchet rotation drive mechanism includes a slider arranged on the upper die, a return spring arranged at the rear end of the slider, a roller arranged at the front end of the slider, and an inclined wedge connected to the lower die, the inclined wedge extends upward to the upper die, the roller contacts the inclined surface of the inclined wedge, and the slider is connected to a ratchet through a rotating shaft and a return spring , the pawl is linked to the ratchet wheel; the rotation-to-position positioning mechanism includes a plurality of positioning grooves evenly arranged on the outer circumference of the cutter disc, a pre-positioning member corresponding to the positioning groove and arranged on the outer circumference of the cutter disc, and a positioning pin corresponding to the positioning groove and arranged on the outer circumference of the cutter disc; the upper die includes an upper die seat, an upper clamping plate, a pad, a bearing fixing plate and a stripping plate arranged in sequence from top to bottom, the upper die seat is connected to the upper clamping plate by a first upper die connecting bolt, the bearing fixing plate is connected to the stripping plate by a second upper die connecting bolt, and the bearing fixing plate is connected to the pad by a third upper die connecting bolt. The upper die seat is connected by a connecting bolt, and a discharge spring is arranged in the spring hole of the upper die seat, and a contour sleeve is arranged at the lower end of the discharge spring, and the contour sleeve passes through the through hole of the upper clamping plate and extends downward, and the lower end surface of the contour sleeve abuts against the upper surface of the pad, and a locking bolt passes through the bearing fixing plate, the pad and the contour sleeve in sequence upward; the discharge mechanism comprises a push rod spring arranged in the mounting hole of the upper die seat and a push rod arranged at the lower end of the push rod spring, and the push rod is downwardly penetrated through the upper clamping plate, the pad and the bearing fixing plate in sequence, and the lower end portion of the push rod is directly opposite to the knife edge.

2. The novel automatic stripping stamping die with a rotatable core according to claim 1 is characterized in that: A pawl groove is provided on the side of the sliding block, and the pawl is installed in the pawl groove.

3. The novel automatic stripping stamping die with a rotatable core according to claim 1 is characterized in that: The main shaft is inserted into the pad, the bearing fixing plate and the stripping plate, an upper locking shaft plate is arranged in the middle through hole of the upper clamping plate, the upper end of the main shaft is connected to the upper locking shaft plate by an upper bolt, the upper locking shaft plate is located above the pad, a pressure bearing is arranged between the upper locking shaft plate and the pad, a first main shaft bearing is arranged between the main shaft and the pad, the ratchet is located in the middle shaft hole of the bearing fixing plate, a second main shaft bearing is arranged between the main shaft and the bearing fixing plate, the cutter disc is located in the middle shaft hole of the stripping plate, and the main shaft is connected to a lower locking shaft plate by a lower bolt below the cutter disc.

4. The novel automatic stripping stamping die with a rotatable core according to claim 3 is characterized in that: A guide sleeve and a guide column are also arranged between the upper die and the lower die.

5. The novel automatic stripping stamping die with a rotatable core according to claim 4 is characterized in that: The damping strip automatic feeding mechanism and the riveting brush automatic feeding mechanism are both roller-type feeding mechanisms.

6. The novel automatic stripping stamping die with a rotatable core according to claim 5 is characterized in that: The lower die comprises a lower die base, a lower pad and a lower mold plate which are arranged in sequence from bottom to top. The lower die base, the lower pad and the lower mold plate are connected with each other through lower die connecting bolts.

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