Guide structure for die assembly

Abstract

The utility model relates to a die structure, in particular to a guide structure for die assembly, which comprises a base, a lower die is mounted on the base, a positioning rod is fixedly arranged on the lower die, and an upper die is slidably arranged on the positioning rod; the base is further provided with a positioning guide mechanism, the positioning guide mechanism comprises a longitudinal positioning assembly and a transverse positioning assembly, and the transverse positioning assembly can position materials arranged on the lower die in the length direction of the lower die; the longitudinal positioning assembly comprises a longitudinal positioning structure and a pressing structure, the longitudinal positioning structure can position materials in the width direction of the lower die, the pressing structure comprises a guide part and a negative pressure suction part, the negative pressure suction part comprises a negative pressure cylinder communicating with the lower die, and in the positioning process of the longitudinal positioning assembly, the negative pressure cylinder is driven by the negative pressure cylinder to rotate. The guide piece can drive the interior of the negative pressure cylinder to form negative pressure, so that the material is attached to the lower mold, and under the cooperation of the positioning guide mechanism, the material can be located in the center of the mold, and subsequent mold closing injection molding is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die structure, specifically a die guiding structure of die closing. BACKGROUND

[0002] Die closing refers to the process of joining the upper and lower two parts of the die together by a die closing machine. This step is mainly used to debug the precision and stability of the die to ensure the normal operation of the die in subsequent production. For large integrated dies, the precision requirement of die closing is higher, so it is an important link before the die is delivered. The quality of die closing directly affects the quality of the product.

[0003] At present, when the die is closed, a numerical control machining center is used to control the precision. During the control process, manual operation is required to control the machine tool for alignment. If the worker's attention is not concentrated, the operation is not standardized, and the technology is not mastered, the die machining precision will be reduced. Although the servo drive system of the numerical control machining center can improve the machining precision, the gap problem may affect the machining quality, ultimately leading to a decrease in die closing precision and affecting the final product quality. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a die guiding structure of die closing to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A die guiding structure of die closing comprises a base, a lower die mounted on the base, a positioning rod arranged on the lower die, and an upper die slidably arranged on the positioning rod.

[0007] The base is further provided with a positioning guiding mechanism, which comprises a longitudinal positioning assembly and a transverse positioning assembly. The transverse positioning assembly can position the material placed on the lower die along the length direction of the lower die.

[0008] The longitudinal positioning assembly comprises a longitudinal positioning structure and a pressing structure. The longitudinal positioning structure can position the material along the width direction of the lower die. The pressing structure comprises a guide and a negative pressure suction piece. The negative pressure suction piece comprises a negative pressure cylinder in communication with the lower die. During the positioning process of the longitudinal positioning assembly, the guide can form a negative pressure inside the negative pressure cylinder, so that the material is attached to the lower die.

[0009] The guide structure of mold clamping: the transverse positioning assembly comprises a second positioning frame slidingly arranged on the base, two groups of the second positioning frames are symmetrically arranged along the length direction of the base, guide plates are arranged on the two groups of second positioning frames, inclined grooves are formed in the guide plates, protruding columns are slidingly arranged in the inclined grooves, and a connecting plate is arranged between the two groups of protruding columns and connected with a second cylinder arranged on the base.

[0010] The guide structure of mold clamping: the longitudinal positioning structure comprises two groups of elastic positioning members and driving members, and the elastic positioning members comprise first positioning frames and two groups of sleeve sockets arranged on the first positioning frames and slidingly connected with fixed rods arranged on the base.

[0011] The guide structure of mold clamping: the driving member comprises a first cylinder arranged on the base, the telescopic end of the first cylinder is fixedly connected with a sliding rail slidingly arranged on the base, a sliding rod is slidingly arranged in the sliding rail, and the sliding rod is arranged on the first positioning frame.

[0012] The guide structure of mold clamping: the guide member comprises two groups of guide plates arranged on the base, the guide plates are symmetrically arranged along the width direction of the base, the guide plates are provided with embedded groove bodies, the embedded groove bodies comprise limiting grooves, reset grooves, horizontal grooves, vertical grooves and moving grooves, and a deflection plate is elastically rotatably arranged at the connection position of the reset groove and the limiting groove.

[0013] The guide structure of mold clamping: the negative pressure suction member further comprises a suction rod slidingly arranged in the negative pressure cylinder, one end of the suction rod is provided with a suction disc, the other end is provided with a sliding groove, a spring is slidingly arranged in the suction rod, one end of the spring is in abutment with the inner wall of the negative pressure cylinder, the other end is in abutment with the suction disc, and the sliding groove is connected with the guide plate through a moving member.

[0014] The guide structure of mold clamping: the moving member comprises a moving plate, the moving plate is slidingly connected with a guide rod arranged on the sliding rail, one side of the moving plate is provided with a second moving rod, the second moving rod is slidingly arranged in the sliding groove, the other side of the moving plate is provided with a first moving rod, and the first moving rod is slidingly arranged in the embedded groove body.

[0015] Compared with the prior art, the guide structure of mold clamping has the advantages that:

[0016] By setting the positioning guide mechanism, the mutual cooperation between the longitudinal positioning assembly and the transverse positioning assembly can realize the positioning of the material on the lower mold. Compared with the positioning mode of manual operation of numerical control center, the precision is higher, and the material deviation on the lower mold can be avoided, which can cause the overflow or defects of the thermoplastic part edge and other problems.

[0017] Meanwhile, by setting the pressing structure, the negative pressure state in the lower mold is formed by the negative pressure cylinder to make the material and the lower mold closely adhere to each other, which can further avoid the deviation of the material due to the oscillation of the base when the longitudinal positioning assembly and the transverse positioning assembly are reset, so as to make the material in the center of the lower mold, thereby improving the production quality of the thermoplastic part. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of the guide structure of the mold clamping.

[0019] Figure 2 The structure diagram of the guide structure of the mold clamping on the base.

[0020] Figure 3 The structure diagram of the guide structure of the mold clamping of the transverse positioning assembly.

[0021] Figure 4 The structure diagram of the guide structure of the mold clamping of the connecting plate and the second positioning frame.

[0022] Figure 5 The structure diagram of the guide structure of the mold clamping of the longitudinal positioning assembly.

[0023] Figure 6 The structure diagram of the guide structure of the mold clamping of the longitudinal positioning assembly.

[0024] Figure 7 The structure diagram of the guide structure of the mold clamping of the longitudinal positioning structure.

[0025] Figure 8 The structure diagram of the guide structure of the mold clamping of the driving member and the pressing structure.

[0026] Figure 9 The structure diagram of the guide structure of the mold clamping of the pressing structure.

[0027] Figure 10 The structure diagram of the guide structure of the mold clamping of the guide member.

[0028] In the figure: 1, base; 101, clamping groove; 102, T-shaped groove; 2, upper die; 3, lower die; 301, air hole; 4, positioning rod; 5, material; 6, first cylinder; 7, guide plate; 701, limiting groove; 702, reset groove; 703, horizontal groove; 704, vertical groove; 705, moving groove; 706, elastic sheet; 707, deflection plate; 8, slide rail; 801, first vertical rail; 802, inclined rail; 803, second vertical rail; 804, T-shaped block; 9, second cylinder; 10, guide plate; 1001, inclined groove; 11, connecting plate; 1101, protruding column; 12, first positioning frame; 1201, sleeve; 1202, slide rod; 13, second positioning frame; 1301, clamping rod; 14, fixing rod; 15, guide rod; 16, negative pressure cylinder; 1601, elastic pressure valve; 17, first moving rod; 18, spring; 19, suction rod; 20, sliding groove; 21, second moving rod; 22, moving plate. DETAILED DESCRIPTION

[0029] Various exemplary embodiments, features, and aspects of the present application will be described herein below with reference to the accompanying drawings. The same reference numbers in the drawings represent the same elements or similar elements. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0030] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0031] In addition, for the purpose of convenience and brevity, detailed descriptions of well-known methods, apparatuses, and / or elements are omitted so as to avoid obscuring the concepts of the present application.

[0032] Please refer to Figures 1-10 In the embodiment of the utility model, a guide structure for die closing includes:

[0033] The base 1 is provided with the lower die 3, and the lower die 3 is provided with the positioning rod 4, and the positioning rod 4 is slidably provided with the upper die 2;

[0034] Specifically, the upper die 2 is driven by a hydraulic driving element (not shown in the figure) and can be lifted along the axial direction of the positioning rod 4 to complete the die closing and die opening operation of the upper die 2 and the lower die 3. Before die closing, the material 5 is placed on the lower die 3, and the center of the material 5 coincides with the center of the lower die 3. Then the upper die 2 is driven to descend. After the upper die 2 and the lower die 3 are pressed for a certain time, the thermoplastic operation of the material 5 is completed, and a thermoplastic part is obtained.

[0035] However, when the material 5 is placed, since the positioning is manually operated by the numerical control center, the center of the material 5 cannot be ensured to be aligned with the center of the lower mold 3, and when the thermoplastic is performed, the edges of the thermoplastic part are prone to defects or overflow, thereby reducing the production quality of the product.

[0036] The base 1 is further provided with a positioning guide mechanism, which comprises a longitudinal positioning assembly and a transverse positioning assembly, and the transverse positioning assembly can position the material 5 placed on the lower mold 3 along the length direction of the lower mold 3.

[0037] The transverse positioning assembly comprises a second positioning frame 13 slidingly arranged on the base 1, and the second positioning frame 13 is symmetrically arranged in two groups along the length direction of the base 1, and the two groups of second positioning frames 13 are both provided with a guide plate 10, the guide plate 10 is provided with an inclined groove 1001, and the inclined groove 1001 is slidingly provided with a protruding column 1101, and the two groups of protruding columns 1101 are provided with a connecting plate 11, and the connecting plate 11 is connected with a second air cylinder 9 arranged on the base 1.

[0038] Specifically, please refer to Figures 1-4 The second positioning frame 13 is rotatably installed with a roller on the side facing the lower mold 3, and the second positioning frame 13 is provided with a clamping rod 1301 slidingly arranged in a clamping groove 101 formed in the base 1, and under the limitation of the clamping groove 101, the second positioning frame 13 can only slide along the length direction of the base 1.

[0039] In particular, the two groups of second air cylinders 9 have the same performance and are controlled by the same motor, and in the initial state, the telescopic rod of the second air cylinder 9 is in the extended state, the two groups of second positioning frames 13 are away from the center of the lower mold 3, and the protruding column 1101 is located at the stroke end of the inclined groove 1001 close to the lower mold 3, and when the material 5 is placed on the lower mold 3, the second air cylinder 9 is started, and then the second air cylinder 9 is retracted to pull the connecting plate 11, at this time, the protruding column 1101 extrudes the inclined groove 1001, which can force the two groups of second positioning frames 13 to synchronously approach the center of the lower mold 3 until the second air cylinder 9 is retracted to the limit value, the protruding column 1101 moves to the stroke end of the inclined groove 1001, and the second positioning frame 13 completes the positioning operation of the material 5 along the length direction of the lower mold 3, and then the second air cylinder 9 stops waiting, and after the longitudinal positioning assembly completes the positioning of the material 5 in the width direction of the lower mold 3, the second air cylinder 9 drives the second positioning frame 13 to reset, so that the second positioning frame 13 does not interfere with the subsequent mold closing process.

[0040] In detail, please refer to Figure 1 , Figure 2 , Figure 5 ,Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 The longitudinal positioning component includes a longitudinal positioning structure and a pressing structure. The longitudinal positioning structure can position the material 5 along the width direction of the lower mold 3. The pressing structure includes a guide and a negative pressure suction component. The negative pressure suction component includes a negative pressure cylinder 16 that communicates with the lower mold 3. During the positioning process of the longitudinal positioning component, the guide can drive the negative pressure cylinder 16 to form a negative pressure, thereby making the material 5 fit with the lower mold 3.

[0041] Two sets of longitudinal positioning structures are symmetrically arranged along the width direction of the base 1. Each set of longitudinal positioning structures includes an elastic positioning component and a driving component. The elastic positioning component includes a first positioning frame 12. Two sets of sleeves 1201 are provided on the first positioning frame 12. The two sets of sleeves 1201 are slidably connected to the fixing rod 14 provided on the base 1.

[0042] The driving component includes a first cylinder 6 disposed on the base 1. The telescopic end of the first cylinder 6 is fixedly connected to a slide rail 8 slidably disposed on the base 1. A slide rod 1202 is slidably disposed in the slide rail 8 and is disposed on the first positioning frame 12.

[0043] Specifically, the slide rail 8 includes a first vertical rail 801, an inclined rail 802, and a second vertical rail 803. The slide rail 8 is also provided with a T-shaped block 804. The T-shaped block 804 is slidably disposed in a T-shaped groove 102 opened on the base 1. Under the restriction of the T-shaped groove 102, the slide rail 8 can only slide along the length direction of the lower mold 3. The two sets of first cylinders 6 have the same performance, are driven by the same motor, and establish a communication connection with the second cylinder 9.

[0044] In the initial state, the two sets of first positioning frames 12 are far from the center of the lower mold 3. At this time, the slide rod 1202 is located at the end of the stroke of the first vertical rail 801 away from the inclined rail 802. After the second positioning frame 13 completes the positioning of the material 5, the first cylinder 6 retracts. During this process, the slide rod 1202 can slide along the first vertical rail 801 first. After the inclined rail 802 contacts the slide rod 1202, the retracting first cylinder 6 can make the inclined rail 802 squeeze the slide rod 1202, thereby forcing the two sets of first positioning frames 12 to move closer to the center of the lower mold 3 along the width direction of the lower mold 3 until the inclined rail 802 separates from the slide rod 1202 and the second vertical rail 803 engages with the slide rod 1202. When the slide rod 1202 slides to the end of the stroke of the second vertical rail 803, the retraction amount of the first cylinder 6 reaches its maximum. At this time, the positioning operation of the first positioning frame 12 is completed, and the material 5 is aligned with the center of the lower mold 3.

[0045] Immediately afterwards, the second cylinder 9 and the first cylinder 6 are reset synchronously. When the first cylinder 6 and the second cylinder 9 return to their initial positions, the first positioning frame 12 and the second positioning frame 13 return to their initial positions to facilitate subsequent mold closing operations.

[0046] Meanwhile, during the positioning process of the first positioning frame 12, the clamping structure can adsorb the material 5 onto the lower mold 3, thereby preventing the material 5 from shifting when the first positioning frame 12 and the second positioning frame 13 are reset.

[0047] To elaborate, please refer to Figure 1 , Figure 2 , Figure 5 , Figure 8 , Figure 9 , Figure 10 Two sets of guide members are symmetrically arranged along the width direction of the base 1. Each set of guide members includes a guide plate 7 disposed on the base 1. Each guide plate 7 is provided with a fitting groove. The fitting groove includes a limiting groove 701, a reset groove 702, a horizontal groove 703, a vertical groove 704, and a moving groove 705. A deflection plate 707 is elastically rotatably installed at the connection between the reset groove 702 and the limiting groove 701.

[0048] The negative pressure suction component also includes a suction rod 19 that is slidably and sealed inside the negative pressure cylinder 16. One end of the suction rod 19, which is submerged in the negative pressure cylinder 16, is provided with a suction plate, and the other end is provided with a sliding groove 20. Specifically, the air outlet of the negative pressure cylinder 16 is connected to a vent 301 opened on the lower mold 3, and the air outlet of the negative pressure cylinder 16 is provided with an elastic pressure valve 1601. A spring 18 is also slidably disposed inside the suction rod 19. One end of the spring 18 abuts against the inner wall of the negative pressure cylinder 16, and the other end abuts against the suction plate. The sliding groove 20 is connected to the guide plate 7 through a moving part.

[0049] The moving component includes a moving plate 22, which is slidably connected to a guide rod 15 disposed on the slide rail 8. A second moving rod 21 is disposed on one side of the moving plate 22 facing the sliding groove 20, and the second moving rod 21 is slidably disposed in the sliding groove 20. A first moving rod 17 is disposed on the other side of the moving plate 22, and the first moving rod 17 is slidably disposed in the fitting groove.

[0050] The aforementioned limiting groove 701, reset groove 702, horizontal groove 703, vertical groove 704, and moving groove 705 constitute a near-right trapezoidal structure. The deflection plate 707 and guide plate 7 are connected by a spring piece 706. In the initial state, the spring piece 706 can block the reset groove 702, presenting... Figure 10As shown in the figure, at this time, the first moving rod 17 is located at the end of the stroke of the limiting groove 701 away from the vertical groove 704, the second moving rod 21 is located at the end of the stroke of the sliding groove 20 near the negative pressure cylinder 16, and the spring 18 is in the stretched state.

[0051] In summary, when the first cylinder 6 retracts, the slide rail 8 cooperates with the guide rod 15 to pull the first moving rod 17 along the limiting groove 701 and the moving groove 705. After the first cylinder 6 retracts to its maximum value, the first moving rod 17 moves to the end of its stroke in the moving groove 705. At the same time, the second moving rod 21 moves to the end of its stroke in the sliding groove 20. Then, the spring 18 releases its elastic potential energy, which drives the first moving rod 17 to slide along the vertical groove 704 until the first moving rod 17 engages with the horizontal groove 703. During this process, the first moving rod 17 pulls the moving plate 22, the second moving rod 21, the sliding groove 20, and the suction rod 19 to slide along the axial direction of the negative pressure cylinder 16, causing a negative pressure to be formed inside the negative pressure cylinder 16. When the negative pressure reaches a certain value, the elastic pressure valve 1601 is opened, connecting the negative pressure cylinder 16 with the vent 301. At this time, a negative pressure is formed on the lower mold 3, which can adsorb the material 5 onto the lower mold 3, thereby preventing the material 5 from shifting during the subsequent reset process of the first positioning frame 12 and the second positioning frame 13.

[0052] During the subsequent reset process of the first cylinder 6 and the second cylinder 9, the slide rail 8 can drive the first moving rod 17 to slide along the horizontal groove 703 until the first moving rod 17 engages with the reset groove 702. The compression of the first moving rod 17 by the reset groove 702 can force the first moving rod 17 to drive the moving plate 22 and the suction rod 19 to reset. After the first moving rod 17 contacts the deflection plate 707, the deflection plate 707 will deflect so that the first moving rod 17 can engage with the limiting groove 701. After the first cylinder 6 resets, the first moving rod 17, the suction rod 19, the first positioning frame 12, and the second positioning frame 13 all return to their initial positions. At this time, the elastic pressure valve 1601 on the negative pressure cylinder 16 is opened, which can make the negative pressure state formed in the lower mold 3 disappear, so as to facilitate the subsequent mold closing and injection molding operation.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A guide structure for mold clamping, characterized in that, include: A base (1) is provided with a lower mold (3) installed on the base (1), a positioning rod (4) is provided on the lower mold (3), and an upper mold (2) is slidably provided on the positioning rod (4). The base (1) is also provided with a material (5) positioning and guiding mechanism. The material (5) positioning and guiding mechanism includes a longitudinal positioning component and a transverse positioning component. The transverse positioning component can position the material (5) placed on the lower mold (3) along the length direction of the lower mold (3). The longitudinal positioning component includes a longitudinal positioning structure and a material (5) pressing structure. The longitudinal positioning structure can position the material (5) along the width direction of the lower mold (3). The material (5) pressing structure includes a guide and a negative pressure suction component. The negative pressure suction component includes a negative pressure cylinder (16) connected to the lower mold (3). During the positioning process of the longitudinal positioning component, the guide can drive the negative pressure cylinder (16) to form a negative pressure, thereby making the material (5) fit with the lower mold (3).

2. A mold clamping guide structure according to claim 1, characterized in that The lateral positioning component includes a second positioning frame (13) slidably disposed on the base (1). Two sets of the second positioning frames (13) are symmetrically arranged along the length direction of the base (1). Each set of the second positioning frames (13) is provided with a guide plate (10). The guide plate (10) is provided with an inclined groove (1001). A protruding post (1101) is slidably disposed in the inclined groove (1001). A connecting plate (11) is provided between the two sets of protruding posts (1101). The connecting plate (11) is connected to the second cylinder (9) disposed on the base (1).

3. The mold clamping guide structure according to claim 1, wherein Two sets of longitudinal positioning structures are symmetrically arranged along the width direction of the base (1). Each set of longitudinal positioning structures includes an elastic positioning component and a driving component. The elastic positioning component includes a first positioning frame (12). Two sets of sleeves (1201) are provided on the first positioning frame (12). The two sets of sleeves (1201) are slidably connected to the fixing rod (14) provided on the base (1).

4. A mold clamping guide structure according to claim 3, characterized in that The driving component includes a first cylinder (6) disposed on the base (1). The telescopic end of the first cylinder (6) is fixedly connected to a slide rail (8) slidably disposed on the base (1). A slide rod (1202) is slidably disposed inside the slide rail (8). The slide rod (1202) is disposed on the first positioning frame (12).

5. A mold clamping guide structure according to claim 4, characterized in that Two sets of guide members are symmetrically arranged along the width direction of the base (1). Each set of guide members includes a guide plate (7) disposed on the base (1). Each guide plate (7) is provided with a fitting groove. The fitting groove includes a limiting groove (701), a reset groove (702), a horizontal groove (703), a vertical groove (704), and a moving groove (705). A deflection plate (707) is elastically rotatably installed at the connection between the reset groove (702) and the limiting groove (701).

6. A mold clamping guide structure according to claim 5, characterized in that The negative pressure suction member further comprises a suction rod (19) sealingly and slidingly arranged in the negative pressure cylinder (16), one end of the suction rod (19) is provided with a suction disc, the other end is provided with a sliding groove (20), and a spring (18) is further slidingly arranged in the suction rod (19), one end of the spring (18) abuts against the inner wall of the negative pressure cylinder (16), the other end abuts against the suction disc, and the sliding groove (20) is connected with the guide plate (7) through a moving piece.

7. A mold clamping guide structure according to claim 6, characterized in that The moving piece comprises a moving plate (22), the moving plate (22) is slidingly connected with a guide rod (15) arranged on the sliding rail (8), one side of the moving plate (22) is provided with a second moving rod (21), the second moving rod (21) is slidingly arranged in the sliding groove (20), and the other side of the moving plate (22) is provided with a first moving rod (17), the first moving rod (17) is slidingly arranged in the embedded groove body.

Images