Mechanical arm for injection molding machine

Abstract

The application relates to the technical field of mechanical arms for injection molding machines, in particular to a mechanical arm for an injection molding machine which is convenient to disassemble and maintain; the mechanical arm comprises a mechanical arm body; the mechanical arm body can control two output ends to move at any point on the x-y-z axis; one output end of the mechanical arm body is connected with a water gap clamp; the other output end of the mechanical arm body is fixedly connected with a vertical motor; the lower end of the vertical motor is fixedly connected with an opening seat; the inner side of the opening seat is rotationally connected with a supporting block; the supporting block is driven by a horizontal motor; the supporting block is connected with the back surface of one square seat; the application is connected by the mutual insertion of two adjacent square seats, so that multiple square seats can be combined to form an adsorption plate which is suitable for injection molding products, thereby avoiding air leakage while ensuring the adsorption demand of the injection molding products, and the applicability of the mechanical arm is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical arms for injection molding machines, in particular to a mechanical arm for injection molding machines that is convenient to disassemble and maintain. BACKGROUND

[0002] Because the working environment of injection molding is relatively harsh, most enterprises are equipped with injection molding robots on the injection molding production line. The injection molding robot mainly completes the feeding and discharging tasks in the production process instead of workers; it can complete the specified tasks in the injection molding machine cavity according to the indication of the control system, has the characteristics of flexible structure and strong adaptability, and is mainly suitable for high repeatability, high strength and high precision operations. The application of injection molding robots to injection molding production lines not only improves the working conditions of workers, but also greatly reduces their physical labor; more importantly, it improves production efficiency and product qualification rate, thereby enhancing the competitiveness of enterprises in the industry.

[0003] The mechanical arm for injection molding machines includes a single arm and a double arm. For the double-arm mechanical arm for injection molding machines, the output end of the mechanical arm can realize point movement in x-y-z three-dimensional directions. One output end of the mechanical arm is fixedly connected with a water gap clamp, and the other output end of the mechanical arm is fixedly connected with a suction cup. The water gap clamp is used to clean the water gap material and other materials in the injection molding mold. The suction cup is used to grasp and transfer the product. Specifically, the suction cup is controlled to inhale air by a gas pump, so that the suction cup generates negative pressure against the product, the product is sucked and pulled under the action of the negative pressure of the suction cup, and the demolding process is completed. For example, the technology of a multi-axis linkage injection molding servo mechanical hand with the publication number CN114589872B and the technology of a side-taking mechanical arm with the publication number CN208052505U. Although the suction cup absorbs the product in a way that is convenient for demolding and transferring, the structure and adsorption area of the suction cup are fixed. For some special-shaped products such as L-shaped and T-shaped products, if one part of the product is adsorbed and demolded, the demolding force will be uneven, causing damage to the product. If the product is covered, the air suction position on the suction cup will not be in contact with the part of the product, which will cause air leakage and demolding failure. Therefore, the existing mechanical arm for injection molding machines has poor operation applicability. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, the present application provides a mechanical arm for injection molding machines that is convenient to disassemble and maintain. The present application connects adjacent two square seats by inserting them into each other, so that multiple square seats can be combined to form an adsorption plate that is suitable for injection molding products, thereby avoiding air leakage while ensuring the adsorption needs of injection molding products, and improving the applicability of the mechanical arm.

[0005] The technical scheme adopted by the present application to solve its technical problems is: the mechanical arm for injection molding machine convenient to disassemble and maintain, comprising a mechanical arm body; the mechanical arm body can control two output ends to move at any point on the x-y-z axis; one of the output ends of the mechanical arm body is connected with a water gap clamp; the other output end of the mechanical arm body is fixedly connected with a vertical motor; the lower end of the vertical motor is fixedly connected with an opening seat; the inner side of the opening seat is rotatably connected with a support block; the support block is driven by a horizontal motor; the support block is connected with the back of one of the square seats; the center of the suction surface of the square seat is provided with a suction hole; the suction hole in the square seat connected with the support block is communicated with the air pump through a hose; one of the side outer walls of the square seat is protrudingly provided with an insertion block; the other three side outer walls of the square seat are recessedly provided with insertion grooves; the insertion blocks on the adjacent two square seats can be inserted into the corresponding insertion grooves; the side wall of the insertion block is communicated with the inner wall of the suction hole through a first air hole; the first air hole is provided with an opening and closing groove; the opening and closing plate is slidably connected in the opening and closing groove; the opening and closing plate is connected with the bottom of the opening and closing groove through a second spring; the opening and closing plate is fixedly connected with an outwardly extending opening and closing rod at the end away from the center of the square seat; the opening and closing rod is movably connected with the insertion block; the inner side wall of the insertion groove is communicated with the inner wall of the suction hole through a second air hole; the inner side wall of the insertion groove is slidably and sealingly connected with a plugging block; the plugging block is connected with the bottom of the insertion groove through a first spring.

[0006] Preferably, the back of the square seat is provided with a first threaded hole communicated with the suction hole; a screw plug is threadedly and sealingly connected in the first threaded hole; the first threaded hole is threadedly and sealingly matched with the threaded joint at the end of the hose; the back of the square seat is provided with a second threaded hole; the support block is provided with a bolt hole corresponding to the second threaded hole; a bolt is threadedly connected in the bolt hole and with the second threaded hole.

[0007] Preferably, the first air hole is provided with a reinforcing groove at the position opposite to the opening and closing groove; the opening and closing plate extends into the reinforcing groove at the end away from the second spring; the opening and closing rod passes through the reinforcing groove.

[0008] Preferably, the end of the opening and closing rod away from the opening and closing plate is provided with a locking block; the locking block can enter the reinforcing groove; the locking block is provided with a rod groove on the side close to the opening and closing rod; the rod groove is hinged with the opening and closing rod through a torsional spring.

[0009] Preferably, the plugging block is provided with a guide groove corresponding to the locking block on the side away from the first spring; the cross section of the bottom of the guide groove is adapted to the cross section of the reinforcing groove; the inner cross section of the guide groove increases away from the bottom.

[0010] Preferably, the rear side of the plug block and the rear side of the square seat are communicated with a U-shaped groove; a U-shaped block is slidably connected in the front-rear direction in the U-shaped groove; the U-shaped block is connected with the inner wall of the U-shaped groove through a third spring; the end of the U-shaped block protrudes from the notch of the U-shaped groove; and the inner wall of the plug groove is provided with a clamping groove corresponding to the end of the U-shaped block.

[0011] Preferably, the U-shaped block is provided with a first chamfer at one end of the plug block, which is away from the square seat and inclined rearward.

[0012] Preferably, the plug block protrudes from the corresponding plug groove; the plurality of first springs in the same square seat have different elastic forces; the plug groove is provided with a push groove penetrating forward; a push block is slidably connected in the push groove; the push block can move towards or away from the center of the square seat along the push groove; the push block is fixedly connected with the corresponding plug block; and the edge of the square seat is provided with a second chamfer.

[0013] Preferably, the inner wall of the adsorption hole is fixedly connected with a first rotary disc; the front side of the first rotary disc is rotatably connected with a second rotary disc; the front side of the second rotary disc is connected with a sealing sleeve through a fourth spring; the sealing sleeve is movably and sealingly connected with the adsorption hole; the first rotary disc is provided with a first through hole penetrating front and back; and the second rotary disc is provided with a second through hole penetrating front and back.

[0014] Preferably, the inner wall of the second through hole is provided with an elastic ring extending rearward.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The present application realizes connection by inserting two adjacent square seats into each other, so that multiple square seats can be combined to form an adsorption plate suitable for injection molding products, thereby avoiding air leakage while ensuring the adsorption demand of the injection molding products, and improving the applicability of the mechanical arm.

[0017] 2. The present application guides the lock block through the guide groove on the side of the plug block away from the first spring during the process of inserting the plug block into the corresponding plug groove, thereby ensuring that the first air hole in the subsequent plug block can be smoothly opened, and ensuring the stability of the air path of the two adjacent square seats.

[0018] 3. In the present application, the plug block continues to enter the plug groove, so that the corresponding plug block in the plug groove moves away, the end of the U-shaped block on the plug block is aligned with the clamping groove on the inner wall of the plug groove, then the third spring pushes the U-shaped block to slide in the U-shaped groove, the end of the U-shaped block on the plug block is clamped into the clamping groove, realizing the locking of the plug block and the plug groove, so that the two adjacent square seats are locked and cannot fall off each other during the adsorption process, improving the stability of the operation of the mechanical arm. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 is a perspective view of the present application;

[0021] Figure 2 is Figure 1 is an enlarged view of A in the figure;

[0022] Figure 3 is a perspective view of the vertical motor, horizontal motor and square seat in the present application;

[0023] Figure 4 is a position diagram of the supporting block in the present application;

[0024] Figure 5 is a perspective view of the square seat in the present application;

[0025] Figure 6 is a position diagram of the locking block in the present application;

[0026] Figure 7 is a connection diagram of two adjacent square seats in the present application;

[0027] Figure 8 is Figure 7 is an enlarged view of B in the figure;

[0028] Figure 9 is a sectional view of two adjacent square seats in the present application;

[0029] Figure 10 is Figure 9 is an enlarged view of C in the figure.

[0030] In the figure: mechanical arm body 1, water gap clamp 11, vertical motor 12, opening seat 13, supporting block 14, horizontal motor 15, bolt hole 16, bolt 17, square seat 2, second chamfer 20, suction hole 21, insertion slot 22, second air hole 23, first threaded hole 24, screw plug 25, second threaded hole 26, U-shaped slot 27, clamping slot 28, pushing slot 29, hose 3, threaded joint 31, insertion block 4, first air hole 41, opening and closing slot 42, reinforcing slot 43, opening and closing plate 5, second spring 51, opening and closing rod 52, locking block 53, rod slot 54, torsional spring 55, plugging block 6, first spring 61, guide slot 62, pushing block 63, U-shaped block 7, third spring 71, first chamfer 72, first rotating disc 8, first through hole 81, second rotating disc 9, fourth spring 91, sealing sleeve 92, second through hole 93, elastic ring 94. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0032] As Figures 1 to 10 shown, the present application includes the following embodiments:

[0033] Embodiment 1: A mechanical arm for injection molding machine facilitating disassembly and maintenance, comprising a mechanical arm body 1; the mechanical arm body 1 can control two output ends to move at any point on the x-y-z axis; one of the output ends of the mechanical arm body 1 is connected with a water gap clamp 11; the other output end of the mechanical arm body 1 is fixedly connected with a vertical motor 12; the lower end of the vertical motor 12 is fixedly connected with an opening seat 13; the inner side of the opening seat 13 is rotatably connected with a support block 14; the support block 14 is driven by a horizontal motor 15; the support block 14 is connected with the back of one of the square seats 2; the suction hole 21 is arranged at the center of the suction surface of the square seat 2; the suction hole 21 in the square seat 2 connected with the support block 14 is communicated with a gas pump (not shown in the figure) through a hose 3; one of the side walls of the square seat 2 protrudes outwardly and is provided with an insertion block 4; the other three side walls of the square seat 2 are recessed and provided with insertion grooves 22; the insertion blocks 4 on the adjacent two square seats 2 can be inserted into the corresponding insertion grooves 22; the side wall of the insertion block 4 is communicated with the inner wall of the suction hole 21 through a first air hole 41; the orifice of the first air hole 41 is provided with an opening and closing groove 42; the opening and closing groove 42 is slidably connected with an opening and closing plate 5; the opening and closing plate 5 is connected with the groove bottom of the opening and closing groove 42 through a second spring 51; the end of the opening and closing plate 5 away from the center of the square seat 2 is fixedly connected with an outwardly extending opening and closing rod 52; the opening and closing rod 52 is movably connected with the insertion block 4; the inner wall of the insertion groove 22 is communicated with the inner wall of the suction hole 21 through a second air hole 23; the inner wall of the insertion groove 22 is slidably and sealingly connected with a plugging block 6; the plugging block 6 is connected with the groove bottom of the insertion groove 22 through a first spring 61.

[0034] Before injection molding, the shape of the adsorption plate is assembled according to the shape of the injection molded product, a plurality of square seats 2 are combined to form an adsorption plate, and the adsorption plate can be combined by a plurality of square seats 2 to form any shape suitable for the injection molded product to meet the demolding requirements of the injection molded product, wherein one square seat 2 is rotatably connected to the inner side of the open seat 13 through the support block 14, the support block 14 is driven by the horizontal motor 15, and the open seat 13 is driven by the vertical motor 12; The insert block 4 on the square seat 2 is provided with a first gas hole 41, the opening and closing of the first gas hole 41 is controlled by the opening and closing plate 5, the opening and closing plate 5 can block the first gas hole 41 on the exposed insert block 4, and the insert block 4 needs to move the opening and closing plate 5 away from the inner side of the first gas hole 41 to ensure the smoothness of the first gas hole 41, to ensure the gas path communication of the adjacent two square seats 2, in the case that the insert block 4 on one of the square seats 2 is inserted into the insert slot 22 on the other square seat 2, the opening and closing rod 52 on the insert block 4 is extruded by the blocking block 6 to drive the opening and closing plate 5 to slide along the opening and closing groove 42, the opening and closing plate 5 is pressed to move against the second spring 51, the opening and closing plate 5 is moved away from the opening and closing groove 42, the opening of the first gas hole 41 is realized, and the opening and closing plate 5 in the insert block 4 which is not inserted into the insert slot 22 blocks the first gas hole 41, in the case that the insert slot 22 is inserted by the insert block 4, the blocking block 6 in the insert slot 22 is pressed to move away from the second gas hole 23 opening position against the first spring 61, so that the second gas hole 23 is opened, after the insert block 4 is inserted into the insert slot 22 to the limit position, the first gas hole 41 on the insert block 4 is aligned with the second gas hole 23, realizing the gas path communication between the adjacent two square seats 2, and the blocking block 6 which is not inserted into the insert block 4 blocks and seals the second gas hole 23 in the insert slot 22; in the case that a plurality of square seats 2 are combined to form any shape suitable for the injection molded product, that is, in the case of forming the adsorption plate, the injection molding of the product will be started, after the combination of the male mold and the female mold is completed, the material is injected into the mold along the injection channel, the mold can be preheated before injection molding, after the injection molding is completed, the mold is controlled to cool, realizing the molding of the injection molded product in the mold, then the male mold and the female mold are away from each other, the injection molded product will adhere to the female mold, then the mechanical arm body 1 drives the adsorption plate to enter between the male mold and the female mold, the adsorption surface of the adsorption plate will face the injection molded product, because the shape of the injection molded product is suitable for the shape of the combined adsorption plate, so that the adsorption plate can contact the injection molded product, so that the adsorption hole 21 generates negative pressure under the condition that the air pump is started to pump, so that the injection molded product is tightly attached to the adsorption plate, finally the adsorption plate drives the injection molded product to be taken off from the female mold, completing the demolding of the injection molded product, after the injection molded product is demolded, it will be moved to the corresponding position by the adsorption plate, the air pump is reversed to supply air, so that the adsorption surface of the adsorption plate is exhausted, realizing the separation of the injection molded product and the adsorption plate, then the water gap clamp 11 takes away the residual material on the male mold and the female mold, and so on.

[0035] The application is connected by inserting two adjacent square seats 2 into each other, so that multiple square seats 2 can be combined to form a suction plate suitable for injection molding products, thereby avoiding air leakage while ensuring the suction demand of injection molding products, and improving the applicability of the mechanical arm.

[0036] In the embodiment 2, the back of the square seat 2 is provided with a first threaded hole 24 communicating with the suction hole 21; the first threaded hole 24 is threadedly and sealingly connected with a plug 25; the first threaded hole 24 is threadedly and sealingly matched with a threaded joint 31 at the end of the hose 3; the back of the square seat 2 is provided with a second threaded hole 26; the support block 14 is provided with a bolt hole 16 corresponding to the second threaded hole 26; the bolt hole 16 is threadedly connected with a bolt 17 passing through the second threaded hole 26.

[0037] In the case of reverse screwing of the bolt 17, the bolt 17 will be separated from the second threaded hole 26, and the connection between the square seat 2 and the support block 14 will be released. Then, in the case of reverse screwing of the threaded joint 31 at the end of the hose 3, the threaded joint 31 will be disconnected from the first threaded hole 24, so that the hose 3 is disconnected from the square seat 2. In the case of replacing a new square seat 2, the plug 25 is unscrewed from the first threaded hole 24, and then connected with the forwardly screwed threaded joint 31, so as to complete the connection between the square seat 2 and the hose 3. Finally, the forwardly screwed bolt 17 is used to complete the connection between the square seat 2 and the support block 14. In this embodiment, the square seat 2 is convenient to disassemble and maintain.

[0038] In the embodiment 3, the first air hole 41 is provided with a reinforcing groove 43 at a position opposite to the opening and closing groove 42; the opening and closing plate 5 extends to the reinforcing groove 43 away from one end of the second spring 51; and the opening and closing rod 52 passes through the reinforcing groove 43.

[0039] The opening and closing rod 52 is provided with a lock block 53 away from one end of the opening and closing plate 5; the lock block 53 can enter the reinforcing groove 43; the lock block 53 is provided with a rod groove 54 on the side close to the opening and closing rod 52; and the rod groove 54 is hingedly connected with the opening and closing rod 52 through a torsional spring 55 at the bottom.

[0040] The locking block 53 on the exposed insert 4 is located outside the reinforcing groove 43. Under the torque of the torsion spring 55, the locking block 53 is offset from the reinforcing groove 43, that is, the locking block 53 is misaligned with the reinforcing groove 43. This prevents the locking block 53 from being pressed into the reinforcing groove 43, avoiding accidental contact of the opening and closing rod 52 on the insert 4 and causing the first vent 41 to open, thus improving the sealing stability of the first vent 41 inside the exposed insert 4. When a negative pressure is generated in the first vent 41 inside the exposed insert 4, the opening and closing plate 5 can control the first vent 41. The vent 41 is blocked, and the opening and closing plate 5 spans the opening and closing groove 42 and the reinforcing groove 43, thereby increasing the strength of the opening and closing plate 5 and improving the stability of the first vent 41 being blocked. When it is necessary to control the insertion of the plug 4 into the corresponding slot 22, the locking block 53 needs to be moved to overcome the torsion spring 55 and the opening and closing rod 52 to rotate until the locking block 53 is aligned with the reinforcing groove 43. Then, the plug 4 is controlled to enter the slot 22, and the locking block 53 will enter the reinforcing groove 43 and drive the opening and closing rod 52 and the opening and closing plate 5 to move.

[0041] Example 4: The sealing block 6 is provided with a guide groove 62 corresponding to the locking block 53 on the side away from the first spring 61; the bottom cross section of the guide groove 62 is adapted to the cross section of the reinforcing groove 43; the inner cross section of the guide groove 62 increases as it moves away from the bottom of the groove.

[0042] When the insert 4 is inserted into the corresponding slot 22, the locking block 53 on the insert 4 corresponds to the guide groove 62. The locking block 53 on the insert 4 will enter the guide groove 62. The opening of the guide groove 62 increases as it moves away from the bottom of the guide groove 62, so that the guide groove 62 can cover the locking block 53. The locking block 53 will enter the guide groove 62 and move closer to the bottom of the guide groove 62 under the guidance of the guide groove 62. The locking block 53 will rotate against the torsion spring 55 under the guiding and squeezing of the guide groove wall of the guide groove 62. When the locking block 53 moves to the bottom of the guide groove 62... When the locking block 53 aligns with the reinforcing groove 43, as the insert block 4 continues to enter the slot 22, the locking block 53 will enter the reinforcing groove 43 and drive the opening and closing rod 52 and the opening and closing plate 5 to move, thereby opening the first air hole 41. In this embodiment, the locking block 53 is guided by the guide groove 62 on the side of the sealing block 6 away from the first spring 61, so that the locking block 53 can be guided to unlock during the process of the insert block 4 being inserted into the corresponding slot 22, thereby ensuring that the first air hole 41 in the subsequent insert block 4 can be opened smoothly, and ensuring the stability of the air path of the two adjacent square seats 2.

[0043] Example 5: A U-shaped groove 27 is provided on the rear side of the insert block 4 and the rear side of the square base 2; a U-shaped block 7 is slidably connected in the U-shaped groove 27 along the front-back direction; the U-shaped block 7 is connected to the inner wall of the U-shaped groove 27 by a third spring 71; the ends of the U-shaped block 7 protrude from the opening of the U-shaped groove 27; the inner wall of the slot 22 is provided with a slot 28 that is engaged with and corresponds to the end of the U-shaped block 7; the U-shaped block 7 is provided with a first chamfer 72 at one end of the insert block 4 that is away from the square base 2 and tilted backward.

[0044] During the insertion of the insert 4 into the corresponding slot 22, the first chamfer 72 at the end of the U-shaped block 7 on the insert 4 is squeezed by the opening of the slot 22, causing the U-shaped block 7 to overcome the third spring 71 and move along the U-shaped groove 27, causing the end of the U-shaped block 7 on the insert 4 to retract into the U-shaped groove 27. As the insert 4 continues to enter the slot 22, the corresponding sealing block 6 in the slot 22 is removed, and the end of the U-shaped block 7 on the insert 4 aligns with the slot 28 on the inner wall of the slot 22. Subsequently, the third spring 71 pushes the U-shaped block 7 to slide in the U-shaped groove 27, and the end of the U-shaped block 7 on the insert 4 will be engaged in the slot 28, realizing the alignment of the insert 4 with the slot. The locking mechanism 22 locks the two adjacent square seats 2, preventing them from detaching during the adsorption process and improving the stability of the robotic arm. When it is necessary to unlock the two adjacent square seats 2, simply press one end of the U-shaped block 7 on the square seat 2, causing the U-shaped block 7 to slide against the third spring 71 within the U-shaped groove 27. The U-shaped block 7 will then move the end of the U-shaped block 7 on the insert 4 out of the corresponding slot 28, thereby unlocking the insert 4 from the corresponding slot 22. This unlocks the two adjacent square seats 2. Finally, the insert 4 can be pulled out of the corresponding slot 22, thus separating the two adjacent square seats 2.

[0045] Example 6: The sealing block 6 protrudes from the corresponding slot 22; the multiple first springs 61 within the same square base 2 have different elastic forces; the slot 22 is provided with a forward-facing through groove 29; a lever 63 is slidably connected within the groove 29; the lever 63 can move closer to or further away from the center of the square base 2 along the groove 29; the lever 63 is fixedly connected to the corresponding sealing block 6; the edge of the square base 2 is provided with a second chamfer 20.

[0046] Due to the second chamfer 20 arranged at the edge position of the square seat 2, the second chamfer 20 of the square seat 2 can extrude the blocking block 6 on the surrounding square seat 2 in the process of inserting the plug-in block 4 on the square seat 2 into the corresponding slot 22; in the case that the slots 22 of the two square seats 2 in contact are aligned, the first spring 61 with greater elastic force can push the blocking block 6 from the self slot 22 into the other corresponding slot 22, so as to realize the reconnection of the two square seats 2 in contact and improve the connection strength of the two square seats 2 in contact; if the blocking block 6 is driven to approach the center of the square seat 2 along the push slot 29 by the push block 63, the blocking block 6 can be returned from the other slot 22 to the self corresponding slot 22, so as to realize the unlocking of the two square seats 2 in contact, and the air pressure in the slot 22 can be communicated with the outside through the push slot 29 and balanced.

[0047] In the embodiment 7, the inner wall of the adsorption hole 21 is fixedly connected with the first rotating disc 8; the front side of the first rotating disc 8 is rotationally connected with the second rotating disc 9; the front side of the second rotating disc 9 is connected with the sealing sleeve 92 through the fourth spring 91; the sealing sleeve 92 is movably and sealingly connected with the adsorption hole 21; the first through hole 81 is arranged through the first rotating disc 8; the second through hole 93 is arranged through the second rotating disc 9, and the inner wall of the second through hole 93 extends rearward and is provided with the elastic ring 94.

[0048] In the case of rotating the sealing sleeve 92, the sealing sleeve 92 drives the second rotating disc 9 to rotate through the fourth spring 91, and the second rotating disc 9 drives the second through hole 93 and the elastic ring 94 in the second through hole 93 to synchronously move in the process of rotating, until the second through hole 93 is aligned with the first through hole 81, the elastic ring 94 protrudes from the second through hole 93 and enters the first through hole 81, so as to realize the positioning of the second through hole 93 and the first through hole 81, so as to ensure that the inner side of the sealing sleeve 92 is communicated with the inner side of the adsorption hole 21 through the second through hole 93 and the first through hole 81; if it is needed to shield the adsorption hole 21 on the corresponding square seat 2, the elastic ring 94 is only needed to be rotated to drive the second through hole 93 to be deviated from the first through hole 81, so as to realize the closure of the hole of the adsorption hole 21 on the adsorption surface of the corresponding square seat 2, so as to meet the adsorption requirements at different positions, for example, the position of the injection product corresponding to one of the square seats 2 has a hole, and the adsorption cannot be performed, the corresponding adsorption hole 21 on the square seat 2 is closed, so as to prevent the air leakage in the process of adsorption of the adsorption plate and ensure the stability of the demolding of the injection product.

[0049] In the description of the present application, it should be noted that the terms “center”, “longitudinal”, “transverse”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the drawings, and the orientation or positional relationship is changed during different usage scenarios of the present application. Figure 3The shown orientation or positional relationship is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0050] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A robotic arm for an injection molding machine that is easy to disassemble and maintain, comprising a robotic arm body and a support block rotatably connected to the output end of the robotic arm body; characterized in that: The support block is connected to the back of one of the square bases; the square base has an adsorption hole on its adsorption surface that communicates with the air pump; one of the outer side walls of the square base has a protruding insert; the other three outer side walls of the square base have recessed slots for inserting the insert; the side wall of the insert is connected to the inner wall of the adsorption hole through a first air hole; the opening of the first air hole has an opening and closing groove; an opening and closing plate is elastically slidably connected in the opening and closing groove; an opening and closing rod extending outward is fixedly connected to the end of the opening and closing plate away from the center of the square base; the opening and closing rod is movably connected to the insert; the inner side wall of the slot is connected to the inner wall of the adsorption hole through a second air hole; a sealing block is elastically slidably sealed to the inner side wall of the slot. A reinforcing groove is provided on the inner wall of the first air hole at a position opposite to the opening and closing groove; the end of the opening and closing plate away from the second spring extends into the reinforcing groove; the opening and closing rod passes through the reinforcing groove. The opening and closing rod is provided with a locking block at the end away from the opening and closing plate; the locking block can enter the reinforcing groove; the side of the locking block near the opening and closing rod is provided with a rod groove; the bottom of the rod groove is hinged to the opening and closing rod by a torsion spring; The sealing block has a guide groove corresponding to the locking block on the side away from the first spring; the bottom cross-section of the guide groove is adapted to the cross-section of the reinforcing groove; the inner cross-section of the guide groove increases as it moves away from the bottom of the groove.

2. The robotic arm for injection molding machines that is easy to disassemble and maintain according to claim 1, characterized in that: The back of the square base is provided with a first threaded hole communicating with the adsorption hole; a screw plug is connected to the threaded hole in the first threaded hole; the first threaded hole is threadedly sealed to the threaded connector at the end of the hose; the back of the square base is provided with a second threaded hole; the support block is provided with a bolt hole corresponding to the second threaded hole; a bolt threaded to the second threaded hole passes through the bolt hole.

3. The robotic arm for injection molding machines that is easy to disassemble and maintain according to claim 1, characterized in that: The rear side of the insert block and the rear side of the square base are connected by a U-shaped groove; a U-shaped block is slidably connected in the U-shaped groove along the front-back direction; the U-shaped block is connected to the inner wall of the U-shaped groove by a third spring; the ends of the U-shaped block protrude out of the groove opening of the U-shaped groove; the inner wall of the slot is provided with a slot that is engaged with and corresponds to the end of the U-shaped block.

4. The robotic arm for injection molding machines that is easy to disassemble and maintain according to claim 3, characterized in that: The U-shaped block is located at one end of the insert block, facing away from the square base and tilted backward, and has a first chamfer.

5. The robotic arm for injection molding machines that is easy to disassemble and maintain according to claim 1, characterized in that: The sealing block protrudes from the corresponding slot; multiple first springs within the same square base have different elastic forces; the slot is provided with a through groove facing forward; a slidable block is connected within the groove; the slidable block can move closer to or further away from the center of the square base along the groove; the slidable block is fixedly connected to the corresponding sealing block; the edge of the square base is provided with a second chamfer.

6. The robotic arm for injection molding machines that is easy to disassemble and maintain according to claim 1, characterized in that: The first turntable is fixedly connected to the inner wall of the adsorption hole; the second turntable is rotatably connected to the front side of the first turntable; the sealing sleeve is connected to the front side of the second turntable by a fourth spring; the sealing sleeve is movably and sealingly connected to the adsorption hole; the first turntable has a first through hole running through its front and rear; the second turntable has a second through hole running through its front and rear.

7. The robotic arm for injection molding machines that is easy to disassemble and maintain according to claim 6, characterized in that: An elastic ring is provided on the inner wall of the second through hole extending rearward.

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