CN115339051B

CN115339051B - Prevent out of round modular fixture and processing equipment

Info

Publication number: CN115339051B
Application number: CN202211012085.6A
Authority: CN
Inventors: 杨凯磊; 罗秋霞; 叶磊
Original assignee: Yongkang Ansheng Plastic Products Co ltd
Current assignee: Yongkang Ansheng Plastic Products Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-03-10
Anticipated expiration: 2042-08-23
Also published as: CN115339051A

Abstract

The invention discloses a shaping clamp for preventing out-of-round and processing equipment, which comprise an injection molding machine, a mold and a production line, wherein a shaping piece is movably arranged on the production line in a guiding manner, the shaping piece comprises a supporting rod and a supporting plate, a hydraulic piece and a rack are arranged on the injection molding machine, the mold comprises an upper module and a lower module, the upper module is arranged on the injection molding machine, a mold cavity is arranged in the upper module, a mold core is arranged on the lower module, the lower module is arranged on the injection molding machine in a sliding manner, the rear end surface of the lower module is connected with the hydraulic piece, and the hydraulic piece can drive the lower module to move back and forth by means of expansion and contraction. The invention provides a shaping clamp and processing equipment for preventing out-of-round, which can automatically shape a cup after the injection molding of the cup is finished, and enable the cup to uniformly dissipate heat, thereby ensuring the cup to uniformly contract, ensuring the cup not to be out-of-round, further improving the production efficiency and simultaneously improving the product percent of pass.

Description

Prevent out of round modular fixture and processing equipment

Technical Field

The invention relates to the technical field of injection molding cup production, in particular to a shaping clamp for preventing out-of-round and processing equipment.

Background

The cup is an indispensable drinking tool in our daily life, it divide into plastics cup, stainless steel cup and ceramic cup etc. according to the material, and plastics cup is because its low in production cost, and has efficiency such as anticorrosion, therefore the application is very extensive, but plastics cup generally is injection moulding production, it often needs a period of cooling time after the injection moulding material pours into, and the operating personnel that moulds plastics often is in order to pursue production efficiency, direct die sinking when not reaching the regulation time, and the cup outside solidifies after cooling this moment, and inside often not solidifies completely, and it is after dropping, often can the shrinkage deformation, thereby make the cup out of round, thereby cause the cup to scrap.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a shaping clamp and processing equipment for preventing out-of-round.

In order to solve the technical problems, the invention is solved by the following technical scheme: a shaping clamp for preventing out-of-round and a processing device thereof comprise an injection molding machine, a mold and a production line, wherein a shaping piece is movably arranged on the production line in a guiding manner, the shaping piece comprises a supporting rod and a supporting plate, a hydraulic part and a rack are arranged on the injection molding machine, the mold comprises a left module and a right module, the left module is arranged on the injection molding machine, a mold cavity is arranged in the left module, a mold core is arranged on the right module, the right module is arranged on the injection molding machine in a sliding manner, the rear end surface of the right module is connected with the hydraulic part, the hydraulic part can stretch out and drive the right module to move back and forth, an ejection device and a locking device are arranged in the left module, the ejection device comprises a top contact rod and a first elastic part, the top contact rod is arranged in the left module in a sliding manner, the ejection rod can eject a cup in the mold cavity outwards due to the forward sliding, one end of the first elastic part is in a top contact with the top contact rod, the other end top is touched on left module, and it touches pole forward top for the top and touches power, locking device includes locking piece and electric putter, and the locking piece setting is on electric putter's telescopic link, and electric putter upwards stretches out, and the locking piece will push up the feeler lever locking, still be provided with jacking device on the injection molding machine, jacking device includes jacking piece and support frame, the support frame sets up on the injection molding machine, and the jacking piece slides and sets up on the support frame, the jacking piece upwards slides and can upwards jack-up the design, makes the die cavity axis on the support stick on the design and the left module unanimous, and is provided with first pressure on the jacking piece and touches the switch, and when support stick and die cavity axis align, first pressure touches the switch pressure and touches on the support frame, and its control electric putter shrink makes the top feeler lever outwards ejecting the dropping on the support stick of cup in the die cavity.

The cup has the advantages that when the injection molding machine opens the mold, the shaping piece is automatically jacked up, the cup is fixed out and falls on the shaping piece, and the cup body is ensured to be round through the shaping piece in the subsequent cooling process.

In the above-mentioned scheme, preferably, still be provided with the air compressor machine on the module of the right side, be provided with the gear in the air compressor machine pivot, it is connected with rack toothing, and the air inlet of air compressor machine is located the mold core periphery, be provided with one-way air inlet in the backup pad, be provided with first gas outlet on the jacking piece, when jacking piece top was touched the lower extreme at the type piece, first gas outlet on the jacking piece was linked together with one-way air inlet after.

In the above scheme, preferably, the support stick is fitted with a contraceptive ring and is equipped with the air bag, and its external diameter is unanimous with the cup internal diameter after the air bag is aerifyd, just be provided with the air vent on the support stick, the slip is provided with the air vent on the support stick, and its rear end is through deciding the inside pipe of type spare and one-way air inlet intercommunication, has seted up the second venthole on its circumference, and its front end surpasss support stick front end face, pushes out completely at the cup, and cup cavity bottom surface top is touched on the air vent, makes it slide backward, makes second venthole and air vent intercommunication.

The cup has the advantages that the cup body is supported by the inflatable bag and is not out of round, meanwhile, the cup cannot be suddenly cooled locally and rapidly shrunk by extracting hot air when being supported, meanwhile, a heat source is better transferred, the cup body is enabled to radiate more uniformly, and the roundness of the cup is guaranteed.

In the above scheme, preferably, the right module is provided with a pulling block, the support frame is provided with a rope hole, the pulling block is connected with one end of a pulling rope, the other end of the pulling rope is connected to the jacking block, and the right module can drive the jacking block to slide upwards by sliding backwards.

In the above scheme, preferably, the top touch rod comprises a cup ejecting rod and a reset top touch rod, the rear ends of the cup ejecting rod and the reset top touch rod are connected together, the reset top touch rod is provided with a convex block, and the two ends of the first elastic piece respectively push against the convex block and a slide way in the left module.

In the above-mentioned scheme, it is preferred, still be provided with first sloping block on the top of reseing the feeler lever, the locking piece includes the slide bar, and its direction slides and sets up on electric putter's telescopic link, and its lower extreme still elasticity top touches and has the second elastic component, and the slide bar upper end is provided with the second sloping block, and the top of reseing touches the first sloping block of pole lapse can push up and touch on the second sloping block.

In the above scheme, preferably, the plane on the first sloping block is propped against the plane on the second sloping block, the reset jacking rod is locked to prevent the reset jacking rod from sliding forwards, the front end face of the reset jacking rod is flush with the front end face of the left module, and the front end face of the jacking rod is flush with the bottom face of the mold cavity.

In the above scheme, preferably, the jacking block is provided with a plurality of positioning pins, and the supporting plate is provided with a plurality of positioning holes matched with the positioning pins.

The invention has the beneficial effects that: the invention provides a shaping clamp and processing equipment for preventing out-of-round, which can automatically shape a cup after the injection molding of the cup is finished, and enable the cup to uniformly dissipate heat, thereby ensuring the cup to uniformly contract, ensuring the cup not to be out-of-round, further improving the production efficiency and simultaneously improving the product percent of pass.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is a schematic view of the internal portion of the present invention.

Fig. 4 is a cross-sectional view of a shaped part according to the present invention.

FIG. 5 is a schematic view of the shape fixing member and the ejecting device of the present invention.

FIG. 6 is a schematic view of a jacking block of the present invention.

Detailed description of the preferred embodiments

The invention is described in further detail below with reference to the following figures and embodiments: referring to fig. 1-6, a shaping fixture and processing equipment for preventing out-of-round comprises an injection molding machine 1, a mold 2, a production line 3 and a shaping piece 4, wherein the production line 3 is a belt line and is provided with a guide convex block, the shaping piece 4 comprises a support rod 41 and a support plate 42, the support rod 41 is arranged on the support plate 42, a guide groove is arranged on the bottom surface of the support plate 42, and the guide groove is matched with the guide convex block to limit the shaping piece 4 on the production line 3.

Wherein assembly line 3 rotates, drives the removal of stereotype 4, and because the direction of direction lug, makes the moving direction of stereotype 4 unanimous, just assembly line 3 is located injection molding machine 1 below, is provided with laser sensor on injection molding machine 1, when assembly line 3 drives stereotype 4 and removes to injection molding machine 1 below, triggers laser sensor to control the assembly line stop to remove, make stereotype 4 stop under injection molding machine 1.

The injection molding machine 1 comprises a hydraulic part 11 and a guide post 14, the mold 2 comprises a left module 21 and a right module 22, the left module 21 is arranged on the injection molding machine 1, the right module 22 is arranged on the guide post 14 in a sliding mode, the front end of a telescopic rod of the hydraulic part 21 is arranged on the rear end face of the right module 22, the hydraulic part 21 is a hydraulic cylinder and stretches back and forth to drive the right module 22 to be folded or separated from the left module 21.

Still be provided with air compressor machine 23 on the right side module 22, unidirectional rotation is provided with gear 231 in the air compressor machine 23 pivot, just be provided with rack 12 on the injection molding machine 1, the remaining rack 12 meshing of gear 231 is connected, and wherein right side module 22 slides backward, makes gear 231 rotate on rack 12 to drive air compressor machine 23 pivot and rotate, and when right side module 22 slided forward, then relative rotation takes place for the pivot on gear 231 and the air compressor machine 23, thereby makes air compressor machine 23 pivot not take place to rotate.

The left module 21 is provided with a mold cavity 211, the right module 22 is socially provided with a mold core 221, the left module 21 and the right module 22 are matched to form a complete mold, the injection molding machine 1 injects injection molding liquid into the mold to form a cup, the right module 22 slides backwards to drive the mold core 221 to be drawn out, the cup is left in the mold cavity, the right module 22 drives the air compressor 23 to rotate in the backward sliding process, the air inlet of the air compressor 23 is positioned at the periphery of the mold core 221, and therefore hot air at the periphery of the mold core 221 is drawn into the air compressor 23 in the rotating process of the air compressor 23.

Still be provided with jacking device 13 on injection molding machine 1, jacking device 13 includes jacking piece 131 and support frame 132, support frame 132 sets up on injection molding machine 1, and jacking piece 131 slides and sets up on support frame 132, just be provided with 2 guiding axles on the jacking piece 131, slide through 2 guiding axles guiding and set up on support frame 132, rope hole 1321 has been seted up on support frame 132, be provided with on the module 22 of the right side and pull the piece, the last one end that is connected with the stay cord that pulls, the stay cord other end is connected on jacking piece 131, set up two locating pins 1312 on the jacking piece 131, just set up two locating holes with locating pin 1312 adaptations on the backup pad 42.

Wherein when right module 22 moves backward, drive jacking piece 131 rebound through the stay cord, and can not touch mold core 221 at the in-process that moves upward, when right module 22 moved to rearmost end, jacking piece 131 just rose to the highest end, and is provided with first pressure on the end plate under jacking piece 131 and touches switch 133, and first pressure touches switch 133 this moment and just presses and touch on the bottom surface of support frame 132.

And the shaping piece 4 is already positioned right below the injection molding machine 1 when the injection molding machine injects glue, so that in the process of upward jacking of the jacking block 131, the positioning pin 1312 on the jacking block is inserted into the positioning hole of the shaping piece 4, the upper surface of the jacking block 131 is jacked and contacted on the lower plane of the shaping piece 4, in the process of ascending of the jacking block 131, the shaping piece 4 is driven to move upward together, and when the jacking block 131 ascends to the highest point, the axis of the supporting rod 41 on the shaping piece 4 is just coincided with the axis of the mold cavity 211.

The bottom end of the jacking block 131 is provided with a first air inlet 1313, the upper end of the jacking block 131 is provided with a first air outlet 1311, the first air inlet 1313 is communicated with the first air outlet 1311 through an internal pipeline of the jacking block 131, the first air inlet 1313 is connected with an air outlet on the air compressor 23 through a hose, the bottom surface of the supporting plate 42 is provided with a one-way air inlet 421, the one-way air inlet 421 is provided with a one-way valve, air can only enter and can not be discharged, after the jacking block 131 is connected with the shaping piece 4 through a positioning pin 1312 in a matched mode, the first air outlet 1311 on the jacking block 131 is connected with the one-way air inlet 421 in a matched mode, the shaping piece 4 is internally provided with a first cavity 44, the right module 22 moves backwards to drive the air compressor 23 to rotate, and the air compressor 23 presses hot air into the first cavity 44 through a pipeline.

Support stick 41 and surround and be equipped with air bag 412, air bag 412 is unanimous with the cup internal diameter at its external diameter of back of aerifing, just be provided with air vent 411 on the support stick 41, support stick 41 goes up to slide and is provided with air bar 43, and air bar 43 has seted up second venthole 431 in the circumference, and air bar 43 rear end is the trompil setting, and it communicates with first cavity 44, and air bar 43 rear end still pushes up and touches and be provided with third elastic component 45, and its both ends push up respectively and touch on support stick 41 inside cavity wall and air bar 43.

The ventilation bar 43 is of a polygonal design, and in an initial state, under the action of the third elastic member 45, the ventilation bar 43 is pushed forward, the front end of the ventilation bar 43 exceeds the front end face of the support rod 41, and the second air outlet 431 of the ventilation bar 43 is staggered with the air outlet 411 of the support rod 41, so that the compressed air in the first cavity 44 cannot be discharged into the airbag 412 from the air outlet 411, and when the ventilation bar 43 is pressed and slides inward, the second air outlet 431 of the ventilation bar is aligned with the air outlet 411 of the support rod 41, and the compressed air in the first cavity 44 is introduced into the airbag 412, so that the airbag 412 is expanded instantly.

The ejection device 24 and the locking device 25 are arranged in the left module 21, the ejection device 24 comprises a top contact rod 241 and a first elastic piece 242, the top contact rod 241 comprises a cup ejection rod 2411 and a reset top contact rod 2412, the rear ends of the cup ejection rod 2411 and the reset top contact rod 2412 are connected together, the top contact rod 241 is arranged in the left module 21 in a sliding mode, a bump 2413 is arranged on the reset top contact rod 2412, two ends of the first elastic piece 242 respectively abut against the bump 2413 and a slideway in the left module 21, the first elastic piece 242 is used for providing elastic force for the top contact rod 241 to abut against outwards, a first inclined block 2414 is further arranged on the reset top contact rod 2412, the locking device 25 comprises a locking piece 251 and an electric push rod 252, the locking piece 251 comprises a sliding rod 2511, the sliding piece is arranged on a telescopic rod of the electric push rod 252 in a guiding mode, the lower end of the sliding piece is also elastically abutted against a second elastic piece, a second inclined block 2513 is arranged at the upper end of the sliding rod 2511, and the electric push rod 252 is controlled by a first pressure contact switch 133.

In a comfortable state, the electric push rod 252 is in an extended state, the ejector 24 is in a locked state, the front end plane of the ejector rod 2411 is flush with the bottom surface of the mold cavity 211, the front end plane of the reset ejector rod 2412 is flush with the front end plane of the left mold block 21, the rear end plane of the first inclined block 2414 is in abutting contact with the front end plane of the second inclined block 2513, and the locking member 251 locks the ejector rod 241.

When the lifting block 131 rises to the highest point, the axis of the supporting rod 41 on the shaping member 4 just coincides with the axis of the mold cavity 211, at this time, the first press-contact switch 13 is pressed and contacted, so that the electric push rod 252 is controlled to contract downwards, the locking member 251 slides downwards, the locking of the press-contact rod 241 is unlocked, the press-contact rod 241 pushes the finished cup in the mold cavity 211 forwards under the action of the first elastic member 242, the finished cup is pushed onto the supporting rod 41 of the shaping member 4, and when the press-contact rod 241 extends to the outermost end, the bottom surface of the inner wall of the cup just presses and contacts the front end surface of the supporting rod 41, so that the vent rod 43 is pressed inwards, the second vent hole 431 is aligned with the vent hole 411 on the supporting rod 41, the compressed air in the first cavity 44 is introduced into the air bag 412, the air bag 412 is instantly expanded, the air bag 412 is completely supported, and the air bag 44 is heated and can not slowly contract, so that the air in the cup can be cooled, and the cup can be cooled uniformly.

The working principle or the using method is as follows:

in the initial state, the assembly line 3 rotates to drive the fixed part 4 to move, so that the fixed part is positioned below the injection molding machine and above the jacking block 131.

Left module 21 and right module 22 merge this moment, injection molding machine 1 carries out the injecting glue for the mould, make its inside formation cup of moulding plastics, after the mould cools off the certain time, right module 22 backward moves, drive mold core 221 and take out from the die cavity 211, make the cup stay in die cavity 211, and at the gliding in-process backward of right module 22, drive jacking piece 131 rebound through the stay cord, and can not touch mold core 221 at the in-process that moves up, when right module 22 moves to the rearmost end, jacking piece 131 just rises to the highest end, and be provided with first pressure on the lower end plate of jacking piece 131 and touch switch 133, and first pressure touches switch 133 this moment just presses and touches on the bottom surface at support frame 132.

And in the process that the right module 22 slides backwards, the air compressor 23 is driven to rotate at the same time, and the air compressor 23 presses hot air obtained around the mold core 221 into the first cavity 44 through the pipeline.

After the first press-contact switch 133 is pressed, the electric push rod 252 is controlled to contract downwards, the locking member 251 slides downwards to unlock the locking of the top contact rod 241, the top contact rod 241 pushes out the finished cup in the mold cavity 211 forwards under the action of the first elastic member 242, the finished cup is pushed onto the support rod 41 of the shaping member 4, and when the top contact rod 241 extends to the outermost end, the bottom surface of the inner wall of the cup just presses against the front end surface of the support rod 41, so the vent rod 43 is pressed inwards, the second vent hole 431 is aligned with the vent hole 411 on the support rod 41, the compressed air in the first cavity 44 is introduced into the inflatable bag 412, the inflatable bag 412 is expanded instantly, the cup is completely supported, and the hot compressed air in the first cavity 44 has a large supporting force on the cup, and the cup can be cooled slowly and cannot contract instantly, and the air in the inflatable bag 412 can flow, so that the uniform cooling can be ensured, and the roundness of the cup can be ensured.

After the air vent rod 43 is pressed in, the second compression switch is pressed and contacted, so that the right module 2 is controlled to move forwards, so that the pull rope is loosened, the jacking block 131 slides downwards to leave the injection molding machine 1, meanwhile, the right module 2 moves forwards, the jacking contact rod 2412 is pressed and contacted on the resetting jacking contact rod 2412 to slide in the left module 21, at the moment, the first pressing contact switch 133 is loosened, so that the electric push rod 252 is upwards ejected, the locking piece 251 is positioned in the forming range of the resetting jacking contact rod 2412, at the moment, the resetting jacking contact rod 2412 slides in the left module 21 under the action of the right module 22, in the sliding process, the first inclined block 2414 on the resetting jacking contact rod 2412 is pressed and contacted on the second inclined block 2513 to slide the sliding rod 2511 downwards to compress the second elastic piece, after the first inclined block 2414 passes through, the first elastic piece is restored to the initial position under the action of the second elastic piece, at the moment, the left module 21 and the right module 22 are just merged, and the locking piece 251 just pushes the jacking contact rod 241.

And the shaping piece 4 with the cup falls on the production line 3, the production line 3 starts to rotate, so that the shaping piece 4 flows backwards and falls on a working table surface at the rear part of the production line, the shaping piece is naturally cooled and contracted, and the shaping piece is always kept in a round shape under the action of the inflatable bag 412, so that the shaping piece is not out of round in the contraction process.

And the shaping piece 4 of the rear assembly line enters the lower part of the injection molding machine.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a prevent processing equipment of out of round which characterized in that: the automatic cup filling machine comprises an injection molding machine (1), a mold (2) and a production line (3), wherein a fixed-size part (4) is movably arranged on the production line (3) in a guiding mode, the fixed-size part (4) comprises a support rod (41) and a support plate (42), an inflating bag (412) is annularly arranged on the support rod (41), the outer diameter of the inflating bag (412) is consistent with the inner diameter of a cup after inflation, a vent hole (411) is formed in the support rod (41), a vent rod (43) is arranged on the support rod (41) in a sliding mode, the rear end of the vent rod (43) is communicated with a one-way air inlet (421) through an inner pipeline of the fixed-size part (4), a second air outlet hole (431) is formed in the circumferential direction of the vent rod (43), the front end of the vent rod (43) exceeds the front end face of the support rod (41), the cup is completely pushed out, the bottom face of a cup cavity is in a propping contact with the vent rod (43), the vent rod (43) is made to slide backwards, and the second air outlet hole (431) is made to be communicated with the vent hole (411);

the injection molding machine is characterized in that a hydraulic part (11) and a rack (12) are arranged on the injection molding machine (1), the mold (2) comprises a left module (21) and a right module (22), the left module (21) is arranged on the injection molding machine (1), a mold cavity (211) is arranged in the left module (21), a mold core (221) is arranged on the right module (22), the right module (22) is arranged on the injection molding machine (1) in a sliding manner, the hydraulic part (11) is connected to the rear end face of the right module (22), and the hydraulic part (11) can stretch to drive the right module (22) to move back and forth;

an ejection device (24) and a locking device (25) are arranged in the left module (21), the ejection device (24) comprises a top contact rod (241) and a first elastic member (242), the top contact rod (241) is arranged in the left module (21) in a sliding mode, the top contact rod (241) can slide forwards to eject a cup in the cavity (211) outwards, one end of the first elastic member (242) is abutted to the top contact rod (241), the other end of the first elastic member (242) is abutted to the left module (21), the first elastic member (242) provides a forward abutting force for the top contact rod (241), the locking device (25) comprises a locking member (251) and an electric push rod (252), the locking member (251) is arranged on a telescopic rod of the electric push rod (252), the electric push rod (252) extends upwards, and the locking member (251) locks the top contact rod (241);

still be provided with jacking device (13) on injection molding machine (1), jacking device (13) are including jacking piece (131) and support frame (132), support frame (132) set up on injection molding machine (1), and jacking piece (131) slide to set up on support frame (132), jacking piece (131) upwards go up kinetic energy with the ejecting of fixed part (4), make supporting rod (41) on the fixed part (4) unanimous with die cavity (211) axis on left module (21), and be provided with first pressure touch switch (133) on jacking piece (131), when supporting rod (41) and die cavity (211) axis align, first pressure touch switch (133) press and touch on support frame (132), and first pressure touch switch (133) control electric putter (252) shrink makes top touch pole (241) outwards ejecting the cup in with die cavity (211) and falls on supporting rod (41).

2. The machining apparatus for preventing out-of-round as set forth in claim 1, wherein: still be provided with air compressor machine (23) on right side module (22), be provided with gear (231) in air compressor machine (23) the pivot, gear (231) and rack (12) meshing are connected, and the air inlet of air compressor machine (23) is located mold core (221) periphery, be provided with one-way air inlet (421) on backup pad (42), be provided with first gas outlet (1311) on jacking piece (131), jacking piece (131) top contacts when the lower extreme of design (4), and first gas outlet (1311) on jacking piece (131) and one-way air inlet (421) combine the back intercommunication.

3. The machining apparatus for preventing out-of-round as set forth in claim 1, wherein: the right module (22) is provided with a pulling block, the supporting frame (132) is provided with a rope hole (1321), the pulling block is connected with one end of a pulling rope, the other end of the pulling rope is connected to the jacking block (131), and the right module (22) can slide backwards to drive the jacking block (131) to slide upwards.

4. The machining apparatus for preventing out-of-round as set forth in claim 1, wherein: the top touch rod (241) comprises a cup ejecting rod (2411) and a reset top touch rod (2412), the rear ends of the cup ejecting rod and the reset top touch rod are connected together, a convex block (2413) is arranged on the reset top touch rod (2412), and two ends of the first elastic piece (242) respectively push against the convex block (2413) and a slide way in the left module (21).

5. The machining apparatus for preventing out-of-round as set forth in claim 4, wherein: still be provided with first sloping block (2414) on restoring to throne and pushing out feeler lever (2412), locking piece (251) include slide bar (2511), and slide bar (2511) direction is slided and is set up on electric putter's (252) telescopic link, and slide bar (2511) lower extreme still elasticity top touches the second elastic component, and slide bar (2511) upper end is provided with second sloping block (2513), and restoring to throne pushes out feeler lever (2412) and slides first sloping block (2414) backward and can push up and touch on second sloping block (2513).

6. The machining apparatus for preventing out-of-round according to claim 5, wherein: the plane on the first inclined block (2414) is abutted against the plane on the second inclined block (2513), the reset abutting rod (2412) is locked to prevent the reset abutting rod (2412) from sliding forwards, the front end face of the reset abutting rod (2412) is flush with the front end face of the left module (21), and the front end face of the cup ejecting rod (2411) is flush with the bottom face of the mold cavity (211).

7. The machining apparatus for preventing out-of-round as set forth in claim 1, wherein: the jacking block (131) is provided with a plurality of positioning pins (1312), and the supporting plate (42) is provided with a plurality of positioning holes matched with the positioning pins (1312).