CN113199225A - Clamp for punching connection of grinding head rod and grinding head seat - Google Patents

Clamp for punching connection of grinding head rod and grinding head seat Download PDF

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Publication number
CN113199225A
CN113199225A CN202110575520.5A CN202110575520A CN113199225A CN 113199225 A CN113199225 A CN 113199225A CN 202110575520 A CN202110575520 A CN 202110575520A CN 113199225 A CN113199225 A CN 113199225A
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CN
China
Prior art keywords
grinding head
cutter
head rod
sleeve
head seat
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Granted
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CN202110575520.5A
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Chinese (zh)
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CN113199225B (en
Inventor
鲁墨武
唐祚旻
周欢
叶长龙
姜春英
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Shenyang Aerospace University
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Shenyang Aerospace University
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Priority to CN202110575520.5A priority Critical patent/CN113199225B/en
Publication of CN113199225A publication Critical patent/CN113199225A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A clamp for punching connection of a grinding head rod and a grinding head seat belongs to the technical field of part machining equipment. A anchor clamps that is used for bistrique pole and bistrique seat punching press to be connected includes the base and sets gradually in the bistrique pole clamping machine of base constructs, tool setting mechanism and bistrique seat advancing mechanism, bistrique pole clamping machine constructs including the kickboard and sets up in the mechanism that reciprocates of kickboard, spacing curb plate and clamping mechanism, tool setting mechanism includes the cutter housing and sets up in the last cutter and the lower cutter of cutter housing, go up the cutter and slide from top to bottom along the cutter housing, bistrique seat advancing mechanism includes the U-shaped board, set up in the tight mechanism in top of U-shaped board and set up in the propulsion piece that tightly constructs in top, the propulsion piece is used for pushing up the bistrique seat that embolias the bistrique pole tightly. The fixture for punching and connecting the grinding head rod and the grinding head seat has the advantages of accurate tool setting, simple operation, low cost and high efficiency, can complete the clamping of the grinding head rod and the grinding head seat, and can assist the press machine to complete the connection of the grinding head rod and the grinding head seat, thereby realizing the batch production of the grinding head.

Description

Clamp for punching connection of grinding head rod and grinding head seat
Technical Field
The invention relates to the technical field of part processing equipment, in particular to a clamp for stamping connection of a grinding head rod and a grinding head seat.
Background
In the process of machining the grinding head, the prior art usually adopts manual operation, a grinding head rod is inserted into a grinding head seat, a stamping tool is externally used on the grinding head seat to extrude partial materials of the grinding head seat into a groove reserved on the grinding head rod, so that the grinding head seat and the grinding head rod are connected, the stamping tool needs to be aligned to the groove of the grinding head rod before stamping, the relative position of the grinding head rod and the stamping tool needs to be fixed in the operations such as sleeving the grinding head seat and stamping after tool setting, but the machining quality and the machining efficiency are difficult to guarantee by the manual operation.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a clamp for stamping connection of a grinding head rod and a grinding head seat, which is accurate in tool setting, simple to operate, low in cost and high in efficiency, can clamp the grinding head rod and the grinding head seat, assists a press machine to complete connection of the grinding head rod and the grinding head seat, and realizes batch production of a grinding head.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a clamp for connecting a grinding head rod and a grinding head seat in a stamping manner comprises a base, and a grinding head rod clamping mechanism, a tool setting mechanism and a grinding head seat propelling mechanism which are sequentially arranged on the base;
the grinding head rod clamping mechanism comprises a floating plate, an up-down moving mechanism, a limiting side plate and a clamping mechanism, wherein the up-down moving mechanism, the limiting side plate and the clamping mechanism are arranged on the floating plate;
the tool setting mechanism comprises a tool sleeve, an upper tool and a lower tool, wherein the upper tool and the lower tool are arranged on the tool sleeve;
the grinding head seat propelling mechanism comprises a U-shaped plate, a jacking mechanism arranged on the U-shaped plate and a propelling block arranged on the jacking mechanism, and the propelling block is used for jacking a grinding head seat sleeved into a grinding head rod.
Furthermore, the up-down moving mechanism comprises a first spring, a first guide pillar and a first guide sleeve, and the guide pillar penetrates through the floating plate and is in threaded connection with the base; the spring is sleeved outside the guide post and positioned between the base and the floating plate; the first guide sleeve is fixedly arranged at the top of the floating plate.
Further, clamping mechanism including assemble in left fixed block, right fixed block, slider and the locking handle of spacing curb plate, left side fixed block is fixed a position through the locating pin with spacing curb plate, right side fixed block spiro union is on spacing curb plate, the slide cooperation of slider and spacing curb plate, right side fixed block passes through screw-thread fit with the locking handle, makes the slider slide in the slide of spacing curb plate through rotatory locking handle.
Furthermore, a first cylindrical groove is formed in the top of the limiting side plate, so that the position of the grinding head rod can be conveniently adjusted when the grinding head rod is not clamped, the tool setting task is completed, a second cylindrical groove is formed in the left fixing block, the sliding block is provided with a third cylindrical groove, the second cylindrical groove and the third cylindrical groove are concentric with the first cylindrical groove after being matched, and the sliding block is pushed to slide leftwards by rotating the locking handle, so that the sliding block and the left fixing block can clamp the grinding head rod.
Further, the upper cutter slides up and down along the cutter sleeve, and the specific setting is as follows: the utility model discloses a cutter structure, including cutter cover, upper cutter, limiting rod, spring three, upper cutter, cutter cover, limiting groove, upper cutter and cutter cover top, the limiting groove has been seted up to cutter cover both sides, the through-hole has been seted up to the upper cutter, and the gag lever post passes the through-hole of upper cutter and the gag lever post of cutter cover, be provided with spring three between upper cutter and the cutter cover top, the upper cutter penetrates spring three and cutter cover and carries on spacingly through gag lever post and limiting groove, makes the upper cutter slide from top to bottom and do not take place the rotation, and spring three makes the upper cutter accomplish to kick-back after the extrusion.
Further, the lower cutter is in threaded connection with the base, and the lower cutter is in welded connection with the cutter sleeve.
Furthermore, a second guide sleeve is embedded in the cutter sleeve.
Furthermore, the cutter sleeve is provided with an observation window.
Furthermore, the both ends trompil of gag lever post is equipped with the fixed pin, prevents it and deviates from.
Furthermore, the jacking mechanism comprises a threaded positioning pin arranged at the top of the U-shaped plate and a second spring sleeved on the threaded positioning pin, and the threaded positioning pin is connected with the propelling block in a sliding manner.
The invention has the beneficial effects that:
1) the upper cutter and the lower cutter are arranged in the same cutter sleeve, so that the cutter setting accuracy can be better ensured;
2) according to the invention, the upper cutter presses the spring III downwards, so that automatic springback after stamping is realized, and the processing efficiency is improved;
3) the floating plate can move up and down along with the workpiece, can adapt to the movement of the workpiece in the stamping process, and ensures the processing precision;
4) the grinding head rod is placed in the first cylindrical groove to be adjusted before clamping, the first cylindrical groove and the limiting side plate are used for supporting the grinding head rod and an operator, and the grinding head rod is clamped by rotating the locking handle after adjustment through the second cylindrical groove and the third cylindrical groove, so that rod parts can be conveniently clamped, and the tool setting accuracy can be improved.
Additional features and advantages of the invention will be set forth in part in the detailed description which follows.
Drawings
Fig. 1 is a schematic structural diagram of a clamp for stamping connection of a grinding head rod and a grinding head seat, provided by an embodiment of the invention;
fig. 2 is a schematic structural view of a grinding head rod clamping mechanism provided by the embodiment of the invention;
fig. 3 is a schematic structural diagram of a tool setting mechanism provided in an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a tool setting mechanism provided in an embodiment of the present invention;
fig. 5 is a schematic structural view of a grinding head base advancing mechanism provided by the embodiment of the invention.
Reference numerals in the drawings of the specification include:
1-base, 2-guide post, 3-guide sleeve I, 4-grinding head rod, 5-grinding head seat, 6-propelling block, 7-spring I, 8-floating plate, 9-limiting side plate, 10-left fixing block, 11-sliding block, 12-locking handle, 13-cylindrical groove I, 14-cylindrical groove II, 15-cylindrical groove III, 16-U-shaped plate, 17-lower cutter, 18-spring II, 19-threaded positioning pin, 20-cutter sleeve, 21-observation window, 22-spring III, 23-upper cutter, 24-guide sleeve II, 25-limiting rod and 26-limiting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "two," and "three" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to solve the problems in the prior art, as shown in fig. 1 to 5, the invention provides a clamp for connecting a grinding head rod and a grinding head seat in a stamping manner, which comprises a base 1, and a grinding head rod clamping mechanism, a tool setting mechanism and a grinding head seat propelling mechanism which are sequentially arranged on the base 1, wherein a grinding head rod 4 is clamped on the grinding head rod clamping mechanism, and a grinding head seat 5 is jacked by the grinding head seat propelling mechanism after being sleeved into the grinding head rod 4;
the grinding head rod clamping mechanism comprises a floating plate 8, an up-down moving mechanism arranged on the floating plate 8, a limiting side plate 9 and a clamping mechanism;
the tool setting mechanism comprises a tool sleeve 20, an upper tool 23 and a lower tool 17 which are arranged on the tool sleeve 20, and the upper tool 23 slides up and down along the tool sleeve 20;
the grinding head seat propelling mechanism comprises a U-shaped plate 16, a jacking mechanism arranged on the U-shaped plate 16 and a propelling block 6 arranged on the jacking mechanism, wherein the propelling block 6 is used for jacking and sleeving a grinding head seat 5 of a grinding head rod 4.
As shown in fig. 1 and 2, the up-down moving mechanism comprises a spring I7, a guide post 2 and a guide sleeve I3, wherein the guide post 2 penetrates through a floating plate 8 to be in threaded connection with the base 1; the first spring 7 is sleeved outside the guide post 2 and is positioned between the base 1 and the floating plate 8; the first guide sleeve 3 is fixedly arranged at the top of the floating plate 8. Guide pin bushing 3 adopts the copper product, guarantees the stability and the smoothness when kickboard 8 reciprocates along guide pillar 2, and then improves the tool setting precision, and spring 7, guide pillar 2 and the cooperation of guide pin bushing 3 make kickboard 8 reciprocate and accomplish the automatic resilience of work back at the press. Clamping mechanism is including assembling in left fixed block 10 of spacing curb plate 9, right fixed block, slider 11 and locking handle 12, and left fixed block 10 is fixed a position through the locating pin with spacing curb plate 9, and right fixed block spiro union is on spacing curb plate 9, and slider 11 cooperates with the slide of spacing curb plate 9, and right fixed block passes through screw-thread fit with locking handle 12, makes slider 11 slide in the slide of spacing curb plate 9 through rotatory locking handle 12. The top of the limiting side plate 9 is provided with a first cylindrical groove 13, so that the position of the grinding head rod 4 can be adjusted when the grinding head rod is not clamped, the tool setting task can be completed, the left fixing block 10 is provided with a second cylindrical groove 14, the sliding block 11 is provided with a third cylindrical groove 15, the second cylindrical groove 14 and the third cylindrical groove 15 are concentric with the first cylindrical groove 13 after being matched, and the sliding block 11 is pushed to slide leftwards by rotating the locking handle 12, so that the sliding block 11 and the left fixing block 10 can complete clamping of the grinding head rod 4.
In this embodiment, bistrique pole clamping machine constructs including kickboard 8, spring 7, guide pillar 2, guide pin bushing 3, spacing curb plate 9, slider 11, left side fixed block 10, right side fixed block and locking handle 12, guide pillar 2 is connected on base 1, guide pin bushing 3 is connected on kickboard 8, spring 7, guide pillar 2 makes kickboard 8 reciprocate and kick-back automatically after the work is accomplished to the press with the cooperation of guide pin bushing 3, spacing curb plate 9 is fixed in on kickboard 8, be equipped with slider 11 on the spacing curb plate 9, left side fixed block 10, right side fixed block and locking handle 12, left side fixed block 10 passes through locating pin and spacing curb plate 9 location, right side fixed block spiro union is on spacing curb plate 9, and cooperate with locking handle 12 through the screw hole, make slider 11 slide in the slide of spacing curb plate 9 through rotatory locking handle 12.
As shown in fig. 3 and 4, the upper knife 23 slides up and down along the knife sleeve 20, and is specifically configured as follows: limiting grooves 26 are formed in two sides of the cutter sleeve 20, the upper cutter 23 is provided with a through hole, a limiting rod 25 penetrates through the through hole of the upper cutter 23 and the limiting groove 26 of the cutter sleeve 20, a spring III 22 is arranged between the upper cutter 23 and the top of the cutter sleeve 20, the upper cutter 23 penetrates through the spring III 22 and the cutter sleeve 20 and is limited through the limiting rod 25 and the limiting groove 26, the upper cutter 23 slides up and down and does not rotate, and the spring III 22 enables the upper cutter 23 to rebound after extrusion. The lower cutter 17 is screwed with the base 1, and the lower cutter 17 is welded with the cutter sleeve 20. When the lower tool 17 is welded to the tool sleeve 20, the lower tool 17 and the tool sleeve 20 need to be positioned by the limiting rod, and then the welding is performed, so that the relative position of the lower tool 17 and the tool sleeve 20 is fixed when the welding is performed. The cutter sleeve 20 is embedded with the second guide sleeve 24, the second guide sleeve 24 is made of copper, the second guide sleeve 24 is in interference fit with the cutter sleeve 20, the second guide sleeve 24 and the upper cutter 23 are in contact to form a sliding pair, stability and smoothness when the upper cutter 23 moves up and down along the cutter sleeve 20 are guaranteed, and tool setting accuracy is improved. The cutter sleeve 20 is provided with an observation window 21, so that the cutter setting and the punching process can be observed conveniently. The two ends of the limiting rod 25 are provided with holes and are provided with fixing pins to prevent the limiting rod from falling off.
As shown in fig. 5, the tightening mechanism includes a threaded positioning pin 19 disposed on the top of the U-shaped plate 16 and a second spring 18 sleeved on the threaded positioning pin 19, and the threaded positioning pin 19 is slidably connected to the pushing block 6. In this embodiment, the bottom of the U-shaped plate 16 is fixed to the base 1, two threaded positioning pins 19 are disposed between two side plates at the upper portion of the U-shaped plate, the threaded positioning pins 19 penetrate through the second spring 18 and the pushing block 6, and the second spring 18 is located between the pushing block 6 and the rear side plate of the U-shaped plate 16 and can push the pushing block 6 forward to push the grinding head rod 4 and the grinding head seat 5 tightly.
The use method of the clamp for the punching connection of the grinding head rod and the grinding head seat comprises the following steps:
firstly, placing a grinding head rod 4 into a first cylindrical groove 13 on a limiting side plate 9 and adjusting a groove on the grinding head rod 4 to enable two grooves on the grinding head rod 4 to respectively correspond to an upper cutter 23 and a lower cutter 17;
secondly, the locking handle 12 is rotated to push the sliding block 11 to lock the grinding head rod 4;
thirdly, the pushing block 6 is pushed backwards to sleeve the grinding head seat 5 on the grinding head rod 4, and the grinding head seat 5 is pushed tightly by loosening and pushing;
finally, the press is operated to punch the upper cutter 23, the floating plate 8 maintains the level of the grinding head rod 4 and the grinding head seat 5 along with downward movement when the upper cutter 23 falls, then the floating plate 8 rebounds along with rebounding of the upper cutter 23, the punching process is finished, and the locking handle 12 is rotated to take down the workpiece.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A clamp for connecting a grinding head rod and a grinding head seat in a stamping manner is characterized by comprising a base, a grinding head rod clamping mechanism, a tool setting mechanism and a grinding head seat propelling mechanism, wherein the grinding head rod clamping mechanism, the tool setting mechanism and the grinding head seat propelling mechanism are sequentially arranged on the base;
the grinding head rod clamping mechanism comprises a floating plate, an up-down moving mechanism, a limiting side plate and a clamping mechanism, wherein the up-down moving mechanism, the limiting side plate and the clamping mechanism are arranged on the floating plate;
the tool setting mechanism comprises a tool sleeve, an upper tool and a lower tool, wherein the upper tool and the lower tool are arranged on the tool sleeve;
the grinding head seat propelling mechanism comprises a U-shaped plate, a jacking mechanism arranged on the U-shaped plate and a propelling block arranged on the jacking mechanism, and the propelling block is used for jacking a grinding head seat sleeved into a grinding head rod.
2. The clamp for the punch connection of the grinding head rod and the grinding head seat as claimed in claim 1, wherein the up-down moving mechanism comprises a first spring, a first guide pillar and a first guide sleeve, the first guide pillar penetrates through the floating plate and is in threaded connection with the base; the spring is sleeved outside the guide post and positioned between the base and the floating plate; the first guide sleeve is fixedly arranged at the top of the floating plate.
3. The clamp for the punching connection of the grinding head rod and the grinding head seat according to claim 2, wherein the clamping mechanism comprises a left fixing block, a right fixing block, a sliding block and a locking handle which are assembled on the limiting side plate, the left fixing block and the limiting side plate are positioned through a positioning pin, the right fixing block is screwed on the limiting side plate, the sliding block is matched with a slide way of the limiting side plate, the right fixing block and the locking handle are in threaded fit, and the sliding block slides in the slide way of the limiting side plate through rotating the locking handle.
4. The clamp for the punching connection of the grinding head rod and the grinding head seat as claimed in claim 3, wherein a first cylindrical groove is formed in the top of the limiting side plate, a second cylindrical groove is formed in the left fixing block, a third cylindrical groove is formed in the slider, and the second cylindrical groove and the third cylindrical groove are concentric with the first cylindrical groove after being matched.
5. The clamp for the punch connection of the grinding head rod and the grinding head seat as claimed in any one of claims 1 to 4, wherein the upper cutter slides up and down along the cutter sleeve specifically set as follows: the cutter sleeve is characterized in that limiting grooves are formed in two sides of the cutter sleeve, the upper cutter is provided with a through hole, a limiting rod penetrates through the through hole of the upper cutter and the limiting groove of the cutter sleeve, a third spring is arranged between the upper cutter and the top of the cutter sleeve, the upper cutter penetrates through the third spring and the cutter sleeve and is limited through the limiting rod and the limiting groove, and the upper cutter slides up and down without rotating.
6. The jig for press-connecting a grinding head bar with a grinding head seat according to any one of claims 1 to 4, wherein the lower cutter is threadedly engaged with the base, and the lower cutter is welded to the cutter sleeve.
7. The clamp for the punch connection of the grinding head rod and the grinding head seat as claimed in any one of claims 1 to 4, wherein a second guide sleeve is embedded in the tool sleeve.
8. The clamp for the punch connection of the grinding head rod and the grinding head seat as claimed in any one of claims 1 to 4, wherein the tool sleeve is provided with an observation window.
9. The jig for the press-fitting connection of a grinding head rod and a grinding head seat according to claim 5, wherein both ends of the stopper rod are opened with fixing pins.
10. The clamp for the stamping connection of the grinding head rod and the grinding head seat as claimed in any one of claims 1 to 4, wherein the jacking mechanism comprises a threaded positioning pin arranged at the top of the U-shaped plate and a second spring sleeved on the threaded positioning pin, and the threaded positioning pin is slidably connected with the pushing block.
CN202110575520.5A 2021-05-26 2021-05-26 Clamp for punching connection of grinding head rod and grinding head seat Active CN113199225B (en)

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Application Number Priority Date Filing Date Title
CN202110575520.5A CN113199225B (en) 2021-05-26 2021-05-26 Clamp for punching connection of grinding head rod and grinding head seat

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Application Number Priority Date Filing Date Title
CN202110575520.5A CN113199225B (en) 2021-05-26 2021-05-26 Clamp for punching connection of grinding head rod and grinding head seat

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CN113199225A true CN113199225A (en) 2021-08-03
CN113199225B CN113199225B (en) 2022-03-18

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862725A (en) * 1988-01-29 1989-09-05 Dayco Products, Inc. Crimping device, adjusting ring therefor
CN201768841U (en) * 2010-08-24 2011-03-23 上海汽车制动系统有限公司 Air valve and push rod riveting equipment and riveting knife feed mechanism thereof
CN203061731U (en) * 2013-02-01 2013-07-17 广西柳州宇明汽车零部件有限公司 Riveting press for tail pedal pipe
CN107584034A (en) * 2017-09-30 2018-01-16 江阴市蒋氏汽摩部件有限公司 A kind of aluminum alloy sleeve pipe thread pressure device of vehicle air conditioning
CN109127925A (en) * 2018-10-26 2019-01-04 河北科技大学 Convey roller shaft head automatic stamping equipment
CN208758489U (en) * 2018-08-23 2019-04-19 武汉华美高新材料有限公司 A kind of red needle equipment for tungsten electrode processing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862725A (en) * 1988-01-29 1989-09-05 Dayco Products, Inc. Crimping device, adjusting ring therefor
CN201768841U (en) * 2010-08-24 2011-03-23 上海汽车制动系统有限公司 Air valve and push rod riveting equipment and riveting knife feed mechanism thereof
CN203061731U (en) * 2013-02-01 2013-07-17 广西柳州宇明汽车零部件有限公司 Riveting press for tail pedal pipe
CN107584034A (en) * 2017-09-30 2018-01-16 江阴市蒋氏汽摩部件有限公司 A kind of aluminum alloy sleeve pipe thread pressure device of vehicle air conditioning
CN208758489U (en) * 2018-08-23 2019-04-19 武汉华美高新材料有限公司 A kind of red needle equipment for tungsten electrode processing
CN109127925A (en) * 2018-10-26 2019-01-04 河北科技大学 Convey roller shaft head automatic stamping equipment

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