A universal mold for producing fastener sleeves

Abstract

The present invention relates to the field of sleeve molds, and in particular to a universal mold for producing fastener-type sleeves, comprising an upper mold shell and a lower mold shell, wherein the top of the upper mold shell is symmetrically provided with a plurality of upper mold grooves, the bottom of the lower mold shell is symmetrically provided with a plurality of lower mold grooves, the top of the lower mold shell is arrayed with a first mounting groove, the first mounting groove is located between the ends of two lower mold grooves, a sleeve is symmetrically fixedly connected in the first mounting groove, a sealing block is slidably connected in the sleeve, and an L-shaped pushing rod is fixedly connected to the side wall of the sealing block; the present invention arranges a sleeve, a sealing block and an L-shaped pushing rod, and the sealing block is pushed to a specified position by the L-shaped pushing rod, so that the mold can simultaneously produce a threaded sleeve with a flat end and a threaded sleeve with a convex end, thereby helping to reduce production costs.

Description

Technical Field

[0001] The invention relates to the field of sleeve moulds, and in particular to a universal mould for producing fastener sleeves. Background Art

[0002] Threaded sleeves are common fasteners and are plastic pipe fittings with a threaded structure. They are mainly used to connect and protect various lines or pipes. This type of sleeve is usually made of plastic and has the characteristics of corrosion resistance, wear resistance, and high temperature resistance. It is widely used in the protection and connection of wires and cables, water pipes, etc. The production process of threaded sleeves is to inject the molten material into the mold groove, and after the material cools and forms, the mold is opened to take out the threaded sleeve inside.

[0003] However, in the prior art, in order to adapt to different situations, it is necessary to produce threaded sleeves of various shapes, including threaded sleeves with flat ends or threaded sleeves with convex ends, which leads to the need to prepare sets of molds of various sizes, thereby increasing the production cost.

[0004] To this end, the present invention proposes a universal mold for producing fastener-type sleeves to solve the above-mentioned problems. Summary of the invention

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a universal mold for producing fastener sleeves, including an upper mold shell and a lower mold shell, the top of the upper mold shell is symmetrically provided with a plurality of upper mold grooves, the bottom of the lower mold shell is symmetrically provided with a plurality of lower mold grooves, the top of the lower mold shell is arrayed with a first mounting groove, the first mounting groove is located between the ends of the two lower mold grooves, a sleeve is symmetrically fixedly connected in the first mounting groove, a sealing block is slidably connected in the sleeve, an L-shaped push rod is fixedly connected to the side wall of the sealing block, a first elastic connector is provided between the L-shaped push rod and the side wall of the sleeve, a push plate is fixedly connected to the side wall of the L-shaped push rod, and a push inclined surface is provided on the surface of the push plate:

[0006] A second mounting groove is provided at a position corresponding to the first mounting groove at the bottom of the upper mold shell, a plurality of push blocks are slidably connected in an array at the bottom of the upper mold shell, a first push pin is fixedly connected at a position corresponding to the two push plates at the bottom of the push block, a bolt is threadedly connected to the top of the push block, and the top of the bolt is rotatably connected to the top of the upper mold shell;

[0007] Specifically, in the prior art, in order to adapt to different situations, it is necessary to produce threaded sleeves of various shapes, including screw ends with flat ends or screw ends with convex ends, which leads to the need to prepare sets of molds of various sizes and specifications, thereby increasing the production cost. The technical solution can solve the above problem, and the specific operation is as follows:

[0008] First, cover the upper mold shell on the top of the lower mold shell, and then turn the nut to connect the nut with the threaded sleeve, so that the upper mold shell is connected to the lower mold shell;

[0009] In the process of connecting the upper mold shell cover with the lower mold shell, the push block is inserted to the position between the two L-shaped push rods. At this time, the first push pin is located above the push plate and does not contact the push inclined surface. The sealing block is away from the end of the sleeve.

[0010] Then the injection molding material is injected into the mold groove through the feeding pipe. During the injection process, the air in the mold groove is discharged through the exhaust pipe to reduce the internal pores of the threaded sleeve after molding and improve the product quality.

[0011] After the material in the mold groove is cooled and formed, the nut is removed to separate the upper mold shell and the lower mold shell, and then the formed threaded sleeve is taken out, thereby producing a threaded sleeve with a convex end;

[0012] If it is necessary to produce a threaded sleeve with a flat end, before injecting the material, first turn the bolt, and under the connection of the thread, the push block moves downward, the first push pin moves downward, and the first push pin moves along the push inclined surface. Under the drive of the push inclined surface, the push plate drives the L-shaped push rod to move, so that the sealing block moves toward the end of the sleeve and seals it, and then the injection material is injected into the mold groove through the feed pipe. After the material in the mold groove is cooled and formed, the nut is removed to separate the upper mold shell and the lower mold shell, and then the formed threaded sleeve is taken out, so as to produce a threaded sleeve with a flat end;

[0013] If a threaded sleeve with a flat end and a threaded sleeve with a raised end are produced at the same time, a specified number of bolts can be rotated so that the sealing blocks at the corresponding positions seal the sleeve ends, while the sealing blocks at the remaining positions do not seal the sleeve ends, so that the mold can produce a threaded sleeve with a flat end and a threaded sleeve with a raised end at the same time, which is beneficial to reduce production costs.

[0014] Preferably, the first elastic connecting member includes a first sliding rod and a first spring, one end of the first sliding rod is fixedly connected to the side wall of the L-shaped pushing rod, and the other end is slidably connected to the side wall of the sleeve, and the two ends of the first spring are respectively fixedly connected to the end of the first sliding rod and the side wall of the sleeve.

[0015] Preferably, it also includes a pressure sensor, which is fixedly connected to the side wall of the sleeve, and the end of the pressure sensor is fixedly connected to the first spring. Two indicator lights are symmetrically arranged on both sides of the bolt at the top of the upper mold shell, and the indication color of the indicator light changes according to the pressure value of the pressure sensor.

[0016] Preferably, it also includes several threaded sleeves and nuts, wherein the several threaded sleeves are symmetrically fixedly connected to the top of the lower mold shell, and the several nuts are rotatably connected to the top of the upper mold shell at positions corresponding to the threaded sleeves.

[0017] Preferably, a picking groove is provided on the top of the lower mold shell corresponding to the end position of the lower mold groove, and a connecting block is fixedly connected to the position of the picking groove at the bottom end of the upper mold shell. The outer wall of the connecting block is rotatably connected to a shaping column, and the shaping column is connected to the connecting block through a thread on the side wall near the end of the connecting block, and the other end of the shaping column extends to the sleeve, and the side wall of the connecting block is symmetrically fixedly connected with a second spring, and the end of the second spring is fixedly connected with an annular sealing plate, and the annular sealing plate is slidably connected to the shaping column, and a pushing component is provided at the bottom of the upper mold shell, and the pushing component is used to push and adjust the annular sealing plate so that the annular sealing plate can seal the end of the picking groove.

[0018] Preferably, the pushing assembly includes a through groove, which is opened in the picking groove to connect the air inside several of the picking grooves, and the upper mold shell is symmetrically provided with air grooves, the bottom of the air groove is connected with one of the picking grooves, and the two tops of the air groove are symmetrically slidably connected with piston rods, and the top of the piston rod is fixedly connected with an annular mounting plate, and the annular mounting plate is sleeved on the nut surface at the corresponding position, and the bottom array of the annular mounting plate is fixedly connected with a second sliding rod, and the second sliding rod is slidably connected to the inner wall of the top end of the upper mold shell, and the bottom end of the second sliding rod is fixedly connected to a third spring, and the bottom end of the third spring is fixedly connected to the inner wall of the top end of the upper mold shell.

[0019] Preferably, it further comprises a limiting groove and a limiting block, wherein the limiting block is fixedly connected to the surface of the second slide bar, and the limiting groove is provided in the upper mold shell at a position corresponding to the limiting block.

[0020] Preferably, the sealing block includes a connecting column and a rotating sleeve, one end of the connecting column is fixedly connected to the end of the L-shaped push rod, the other end of the connecting column is symmetrically fixedly connected to the second push pin, the rotating sleeve is rotatably connected to the surface of the connecting column, a driving groove is symmetrically opened inside the rotating sleeve, the driving groove is an oblique groove, the second push pin is slidably connected in the driving groove, and a fourth spring is commonly connected between the connecting column and the rotating sleeve.

[0021] Preferably, the side wall of the annular sealing plate is rotatably connected to an annular rotating disk.

[0022] Preferably, a feed pipe is fixedly connected to the side wall of the lower mold shell at a position corresponding to the lower mold groove, and an exhaust pipe is fixedly connected to the top of the upper mold shell at a position corresponding to the upper mold groove.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a sleeve, a sealing block and an L-shaped push rod, and the sealing block is pushed to a specified position by the L-shaped push rod, so that the mold can simultaneously produce a threaded sleeve with a flat end and a threaded sleeve with a convex end, thereby helping to reduce production costs.

[0025] 2. The present invention sets a pressure sensor and an indicator light. When the L-shaped push rod does not move, the first spring is not compressed, the pressure value of the pressure sensor is zero, and the indicator light color can be green. When the L-shaped push rod pushes the sealing block to seal the end of the sleeve, the pressure value of the pressure sensor increases and reaches a specified value. At this time, the indicator light color can be red, which is convenient for assisting in judging the specific position of the sealing block, thereby producing a specified model of threaded sleeve, reducing the production difficulty.

[0026] 3. The present invention sets a connecting column and a rotating sleeve. During the process of injecting the material, the rotating sleeve is squeezed by the material so that it moves along the surface of the connecting column, and the fourth spring is compressed. During the movement, the rotating sleeve is driven by the driving groove to rotate. When the annular sealing plate is away from the end of the mold groove, the rotating sleeve moves and resets along the surface of the connecting column. The rotating sleeve pushes the threaded sleeve to move. At the same time, the rotating sleeve is driven by the driving groove to rotate, and the threaded sleeve rotates, thereby facilitating the separation of the threaded sleeve from the mold groove and reducing the difficulty of unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection between the lower mold shell and the threaded sleeve in the present invention;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 It is a schematic diagram of the connection between the upper mold shell and the nut in the present invention;

[0031] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0032] Figure 6 is a cross-sectional view of the sleeve in the present invention;

[0033] Figure 7 Schematic diagram of the connection between the connecting column and the rotating sleeve in the present invention Figure 1 ;

[0034] Figure 8 Schematic diagram of the connection between the connecting column and the rotating sleeve in the present invention Figure 2 ;

[0035] Fig. 9 The side section view of the upper mold shell in the present invention Figure 1 ;

[0036] Fig.10 for Fig. 9 Enlarged view of point C in the middle;

[0037] Fig.11 The side section view of the upper mold shell in the present invention Figure 2 ;

[0038] Fig.12 for Fig.11 Enlarged view of point D in the middle;

[0039] Fig.13 The threaded sleeve with a flat end in the present invention;

[0040] Fig.14 The present invention is a threaded sleeve with a convex end.

[0041] In the figure: upper mold shell 1, upper mold groove 2, second mounting groove 3, lower mold shell 4, lower mold groove 5, first mounting groove 6, sleeve 7, sealing block 8, connecting column 801, rotating sleeve 802, second push pin 803, driving groove 804, fourth spring 805, L-shaped pushing rod 9, pushing plate 10, pushing block 11, first pushing pin 12, bolt 13, first slide bar 14, first spring 15, pressure sensor 16, indicator light 17, threaded sleeve 18, nut 19, picking groove 20, connecting block 21, second spring 22, annular sealing plate 23, through groove 24, air groove 25, piston rod 26, annular mounting plate 27, second slide bar 28, third spring 29, limiting groove 30, limiting block 31, annular rotating disk 32, feeding pipe 33, exhaust pipe 34, threaded sleeve 3501 with flat end, threaded sleeve 3502 with raised end, and shaping column 36. DETAILED DESCRIPTION

[0042] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0043] like Figures 1 to 14A universal mold for producing a fastener sleeve is shown, comprising an upper mold shell 1 and a lower mold shell 4, wherein a plurality of upper mold grooves 2 are symmetrically opened on the top of the upper mold shell 1, a plurality of lower mold grooves 5 are symmetrically opened on the bottom of the lower mold shell 4, a first mounting groove 6 is opened in an array on the top of the lower mold shell 4, the first mounting groove 6 is located between the ends of the two lower mold grooves 5, a sleeve 7 is symmetrically fixedly connected in the first mounting groove 6, a sealing block 8 is slidably connected in the sleeve 7, an L-shaped push rod 9 is fixedly connected to the side wall of the sealing block 8, a first elastic connector is arranged between the L-shaped push rod 9 and the side wall of the sleeve 7, a push plate 10 is fixedly connected to the side wall of the L-shaped push rod 9, and a push inclined surface is arranged on the surface of the push plate 10:

[0044] A second mounting groove 3 is provided at a position corresponding to the first mounting groove 6 at the bottom of the upper mold shell 1. A plurality of push blocks 11 are slidably connected in an array at the bottom of the upper mold shell 1. A first push pin 12 is fixedly connected at a position corresponding to the two push plates 10 at the bottom of the push block 11. A bolt 13 is threadedly connected to the top of the push block 11. The top of the bolt 13 is rotatably connected to the top of the upper mold shell 1.

[0045] A feed pipe 33 is fixedly connected to the position of the lower mold groove 5 on the side wall of the lower mold shell 4, and an exhaust pipe 34 is fixedly connected to the position of the upper mold groove 2 on the top of the upper mold shell 1;

[0046] It also includes several threaded sleeves 18 and nuts 19. Several threaded sleeves 18 are symmetrically fixedly connected to the top of the lower mold shell 4, and several nuts 19 are rotatably connected to the top of the upper mold shell 1 at positions corresponding to the threaded sleeves 18.

[0047] Specifically, in the prior art, in order to adapt to different situations, it is necessary to produce threaded sleeves of various shapes, including threaded sleeves 3501 with flat ends or threaded sleeves 3502 with convex ends. This leads to the need to prepare sets of molds of various sizes, thereby increasing the production cost. The technical solution can solve the above problem, and the specific operation is as follows:

[0048] First, cover the upper mold shell 1 on the top of the lower mold shell 4, and then rotate the nut 19 to connect the nut 19 with the threaded sleeve 18, so that the upper mold shell 1 is connected with the lower mold shell 4;

[0049] In the process of connecting the upper mold shell 1 cover with the lower mold shell 4, the push block 11 is inserted to the position between the two L-shaped push rods 9. At this time, the first push pin 12 is located above the push plate 10 and does not contact the push inclined surface. The sealing block 8 is away from the end of the sleeve 7.

[0050] Then, the injection molding material is injected into the mold groove through the feed pipe 33, and the air in the mold groove is discharged through the exhaust pipe 34 during the injection process to reduce the internal pores of the threaded sleeve after molding and improve the product quality;

[0051] After the material in the mold groove is cooled and formed, the nut 19 is removed to separate the upper mold shell 1 and the lower mold shell 4, and then the formed threaded sleeve is taken out to produce the threaded sleeve 3502 with a convex end;

[0052] If it is necessary to produce a threaded sleeve 3501 with a flat end, before injecting the material, first turn the bolt 13, and under the connection of the thread, the push block 11 moves downward, and the first push pin 12 moves downward, so that the first push pin 12 moves along the push inclined plane, and under the drive of the push inclined plane, the push plate 10 drives the L-shaped push rod 9 to move, so that the sealing block 8 moves toward the end of the sleeve 7 and seals it, and then the injection material is injected into the mold groove through the feed pipe 33. After the material in the mold groove is cooled and formed, the nut 19 is removed to separate the upper mold shell 1 and the lower mold shell 4, and then the formed threaded sleeve is taken out, so as to produce the threaded sleeve 3501 with a flat end;

[0053] If a threaded sleeve 3501 with a flat end and a threaded sleeve 3502 with a raised end are produced at the same time, a specified number of bolts 13 can be rotated so that the sealing blocks 8 at the corresponding positions seal the end of the sleeve 7, while the sealing blocks 8 at the remaining positions do not seal the end of the sleeve 7, so that the mold can simultaneously produce a threaded sleeve 3501 with a flat end and a threaded sleeve 3502 with a raised end, which is beneficial to reduce production costs.

[0054] In a specific implementation process, the first elastic connecting member includes a first slide bar 14 and a first spring 15, one end of the first slide bar 14 is fixedly connected to the side wall of the L-shaped push rod 9, and the other end is slidably connected to the side wall of the sleeve 7, and the two ends of the first spring 15 are respectively fixedly connected to the end of the first slide bar 14 and the side wall of the sleeve 7;

[0055] Specifically, by setting the first sliding rod 14 and the first spring 15, when producing the threaded sleeve 3501 with a flat end, the L-shaped push rod 9 pushes the sealing block 8 to move toward the end of the sleeve 7. During the movement, the first spring 15 is compressed. After the material is cooled and formed, the upper mold shell 1 is removed, so that the first push pin 12 moves upward to cancel the contact with the push inclined surface. Under the elastic action of the first spring 15, the L-shaped push rod 9 and the push plate 10 are reset, and the sealing block 8 is reset.

[0056] As a further embodiment of the present invention, it also includes a pressure sensor 16, the pressure sensor 16 is fixedly connected to the side wall of the sleeve 7, the end of the pressure sensor 16 is fixedly connected to the first spring 15, and two indicator lights 17 are symmetrically arranged on both sides of the bolt 13 at the top of the upper mold shell 1, and the indication color of the indicator light 17 changes according to the pressure value of the pressure sensor 16;

[0057] Specifically, after the upper mold shell 1 and the lower mold shell 4 are installed, it is difficult to observe the specific position of the first push pin 12. If the first push pin 12 reaches the specified position, the annular sealing plate 23 will not be able to move to the specified position of the sleeve 7, thereby increasing the difficulty of producing the specified type of screws. The present technical solution can solve the above problems. The specific operation is as follows: by setting a pressure sensor 16 and an indicator light 17, when the L-shaped push rod 9 does not move, the first spring 15 is not compressed, and the pressure value of the pressure sensor 16 is zero. At this time, the color of the indicator light 17 can be green. In the process of the L-shaped push rod 9 pushing the sealing block 8 to seal the end of the sleeve 7, the pressure value of the pressure sensor 16 increases and reaches the specified value. At this time, the color of the indicator light 17 can be red, which is convenient for assisting in judging the specific position of the sealing block 8, thereby producing a threaded sleeve of a specified type, reducing the production difficulty.

[0058] As a further embodiment of the present invention, a pick-up groove 20 is provided at the top of the lower mold shell 4 corresponding to the end position of the lower mold groove 5, and a connecting block 21 is fixedly connected to the position of the picking groove 20 at the bottom end of the upper mold shell 1. A shaping column 36 is rotatably connected to the outer wall of the connecting block 21. The shaping column 36 is connected to the connecting block 21 through a thread on the side wall near the end of the connecting block 21. The other end of the shaping column 36 extends to the sleeve 7. The side wall of the connecting block 21 is symmetrically fixedly connected with a second spring 22. The end of the second spring 22 is fixedly connected with an annular sealing plate 23. The annular sealing plate 23 is slidably connected to the shaping column 36. A pushing component is provided at the bottom of the upper mold shell 1. The pushing component is used to push and adjust the annular sealing plate 23 so that the annular sealing plate 23 seals the end of the picking groove 20.

[0059] Specifically, after the upper mold shell 1 and the lower mold shell 4 are connected, the shaping column 36 is inserted into the mold groove, and the shaping column 36 is rotated so that the shaping column 36 is connected to the connecting block 21, and then the annular sealing plate 23 is moved toward the end of the mold groove by pushing the assembly, and the end of the mold groove is sealed, so that the produced screw end is smoother. Before the upper mold shell 1 and the lower mold shell 4 need to be separated, the shaping column 36 is first rotated to disengage the shaping column 36 from the mold groove, and then the annular sealing plate 23 is moved away from the end of the mold groove by pushing the assembly to facilitate the disengagement of the threaded sleeve from the annular sealing plate 23, and then the upper mold shell 1 and the lower mold shell 4 are separated, and the threaded sleeve is removed through the picking groove 20.

[0060] As a further embodiment of the present invention, the pushing component includes a through groove 24, which is opened in the picking groove 20 to allow the air inside several picking grooves 20 to be connected, and the upper mold shell 1 is symmetrically provided with air grooves 25, the bottom of the air groove 25 is connected with one of the picking grooves 20, and the two tops of the air groove 25 are symmetrically slidably connected with piston rods 26, and the top of the piston rod 26 is fixedly connected with an annular mounting plate 27, and the annular mounting plate 27 is sleeved on the surface of the nut 19 at the corresponding position, and the bottom array of the annular mounting plate 27 is fixedly connected with a second slide bar 28, and the second slide bar 28 is slidably connected to the inner wall of the top end of the upper mold shell 1, and the bottom end of the second slide bar 28 is fixedly connected with a third spring 29, and the bottom end of the third spring 29 is fixedly connected to the inner wall of the top end of the upper mold shell 1;

[0061] Specifically, after the upper mold shell 1 is covered on the lower mold shell 4, the nut 19 is rotated to move the nut 19 downward. During the downward movement of the nut 19, the nut 19 pushes the annular mounting plate 27 to move the annular mounting plate 27 downward. The third spring 29 is compressed, so that the piston rod 26 moves downward along the air groove 25, compressing the air in the air groove 25. Under the action of the air pressure, the annular sealing plate 23 moves toward the end of the mold groove, the second spring 22 is pulled, and the annular sealing plate 23 seals the end of the mold groove.

[0062] Before the upper mold shell 1 and the lower mold shell 4 need to be separated, the nut 19 is first rotated to move the nut 19 upward. Under the action of the third spring 29, the annular mounting plate 27 moves upward, and the piston rod 26 moves upward, so that the air pressure in the air groove 25 is reduced, and the annular sealing plate 23 is away from the end of the mold groove, so that the threaded sleeve can be disengaged from the annular sealing plate 23, and then the upper mold shell 1 and the lower mold shell 4 are separated.

[0063] As a further embodiment of the present invention, it also includes a limit groove 30 and a limit block 31, the limit block 31 is fixedly connected to the surface of the second slide bar 28, and the limit groove 30 is opened in the upper mold shell 1 at a position corresponding to the limit block 31;

[0064] Specifically, the limiting groove 30 and the limiting block 31 are provided to limit the second sliding rod 28 to prevent the piston rod 26 from being separated from the air groove 25 .

[0065] As a further embodiment of the present invention, the sealing block 8 includes a connecting column 801 and a rotating sleeve 802, one end of the connecting column 801 is fixedly connected to the end of the L-shaped push rod 9, the other end of the connecting column 801 is symmetrically fixedly connected to the second push pin 803, the rotating sleeve 802 is rotatably connected to the surface of the connecting column 801, and a driving groove 804 is symmetrically opened inside the rotating sleeve 802, the driving groove 804 is an oblique groove, the second push pin 803 is slidably connected in the driving groove 804, and a fourth spring 805 is commonly connected between the connecting column 801 and the rotating sleeve 802;

[0066] Specifically, by providing a connecting column 801 and a rotating sleeve 802, during the process of inserting the shaping column 36 into the mold groove, the rotating sleeve 802 is squeezed by the shaping column 36 so as to move along the surface of the connecting column 801, and the fourth spring 805 is compressed. During the movement, the rotating sleeve 802 is driven by the driving groove 804 to rotate. After the shaping column 36 is separated from the mold groove and the sealing plate 23 is away from the end of the mold groove, the rotating sleeve 802 is moved and reset along the surface of the connecting column 801 under the action of the fourth spring 805, and the rotating sleeve 802 pushes the threaded sleeve to move. At the same time, driven by the driving groove 804, the rotating sleeve 802 rotates, and the threaded sleeve rotates, thereby facilitating the separation of the threaded sleeve from the mold groove and reducing the difficulty of unloading.

[0067] As a further embodiment of the present invention, the side wall of the annular sealing plate 23 is rotatably connected with an annular rotating disk 32;

[0068] Specifically, by providing the annular rotating disk 32, the wear between the threaded sleeve and the annular sealing plate 23 during the rotation process is reduced.

[0069] The working principle of the present invention is as follows: first, the upper mold shell 1 is covered on the top of the lower mold shell 4, and then the nut 19 is rotated to connect the nut 19 with the threaded sleeve 18, so that the upper mold shell 1 is connected with the lower mold shell 4;

[0070] In the process of connecting the upper mold shell 1 cover with the lower mold shell 4, the push block 11 is inserted to the position between the two L-shaped push rods 9. At this time, the first push pin 12 is located above the push plate 10 and does not contact the push inclined surface. The sealing block 8 is away from the end of the sleeve 7.

[0071] Then, the injection molding material is injected into the mold groove through the feed pipe 33, and the air in the mold groove is discharged through the exhaust pipe 34 during the injection process to reduce the internal pores of the threaded sleeve after molding and improve the product quality;

[0072] After the material in the mold groove is cooled and formed, the nut 19 is removed to separate the upper mold shell 1 and the lower mold shell 4, and then the formed threaded sleeve is taken out to produce the threaded sleeve 3502 with a convex end;

[0073] If it is necessary to produce a threaded sleeve 3501 with a flat end, before injecting the material, first turn the bolt 13, and under the connection of the thread, the push block 11 moves downward, and the first push pin 12 moves downward, so that the first push pin 12 moves along the push inclined plane, and under the drive of the push inclined plane, the push plate 10 drives the L-shaped push rod 9 to move, so that the sealing block 8 moves toward the end of the sleeve 7 and seals it, and then the injection material is injected into the mold groove through the feed pipe 33. After the material in the mold groove is cooled and formed, the nut 19 is removed to separate the upper mold shell 1 and the lower mold shell 4, and then the formed threaded sleeve is taken out, so as to produce the threaded sleeve 3501 with a flat end;

[0074] If a threaded sleeve 3501 with a flat end and a threaded sleeve 3502 with a raised end are produced at the same time, a specified number of bolts 13 can be rotated so that the sealing blocks 8 at the corresponding positions seal the end of the sleeve 7, while the sealing blocks 8 at the remaining positions do not seal the end of the sleeve 7, so that the mold can simultaneously produce a threaded sleeve 3501 with a flat end and a threaded sleeve 3502 with a raised end, which is beneficial to reduce production costs.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A universal mold for producing fastener sleeves, comprising an upper mold shell (1) and a lower mold shell (4), wherein the upper mold shell (1) is symmetrically provided with a plurality of upper mold grooves (2) at the top, and the lower mold shell (4) is symmetrically provided with a plurality of lower mold grooves (5) at the bottom, characterized in that: The top array of the lower mold shell (4) is provided with a first mounting groove (6), the first mounting groove (6) is located between the ends of the two lower mold grooves (5), a sleeve (7) is symmetrically fixedly connected in the first mounting groove (6), a sealing block (8) is slidably connected in the sleeve (7), an L-shaped push rod (9) is fixedly connected to the side wall of the sealing block (8), a first elastic connecting piece is provided between the L-shaped push rod (9) and the side wall of the sleeve (7), a push plate (10) is fixedly connected to the side wall of the L-shaped push rod (9), and a push inclined surface is provided on the surface of the push plate (10): A second mounting groove (3) is provided at a position corresponding to the first mounting groove (6) at the bottom of the upper mold shell (1); a plurality of push blocks (11) are slidably connected in an array at the bottom of the upper mold shell (1); a first push pin (12) is fixedly connected at a position corresponding to the two push plates (10) at the bottom of the push block (11); a bolt (13) is threadedly connected to the top of the push block (11); and the top of the bolt (13) is rotatably connected to the top of the upper mold shell (1).

2. A universal mold for producing fastener sleeves according to claim 1, characterized in that: The first elastic connecting member comprises a first sliding rod (14) and a first spring (15); one end of the first sliding rod (14) is fixedly connected to the side wall of the L-shaped pushing rod (9), and the other end is slidably connected to the side wall of the sleeve (7); and the two ends of the first spring (15) are respectively fixedly connected to the end of the first sliding rod (14) and the side wall of the sleeve (7).

3. A universal mold for producing fastener sleeves according to claim 2, characterized in that: It also includes a pressure sensor (16), the pressure sensor (16) is fixedly connected to the side wall of the sleeve (7), the end of the pressure sensor (16) is fixedly connected to the first spring (15), and two indicator lights (17) are symmetrically arranged on both sides of the bolt (13) at the top of the upper mold shell (1), and the indication color of the indicator light (17) changes according to the pressure value of the pressure sensor (16).

4. A universal mold for producing fastener sleeves according to claim 1, characterized in that: It also comprises a plurality of threaded sleeves (18) and nuts (19), wherein the plurality of threaded sleeves (18) are symmetrically fixedly connected to the top end of the lower mold shell (4), and the plurality of nuts (19) are rotatably connected to the top end of the upper mold shell (1) at positions corresponding to the threaded sleeves (18).

5. A universal mold for producing fastener sleeves according to claim 4, characterized in that: A pick-up groove (20) is provided at the top of the lower mold shell (4) corresponding to the end position of the lower mold groove (5); a connecting block (21) is fixedly connected to the bottom of the upper mold shell (1) corresponding to the position of the pick-up groove (20); a shaping column (36) is rotatably connected to the outer wall of the connecting block (21); the shaping column (36) is connected to the connecting block (21) through a thread on the side wall near the end of the connecting block (21); the other end of the shaping column (36) extends to the sleeve (7); a second spring (22) is symmetrically fixedly connected to the side wall of the connecting block (21); an annular sealing plate (23) is fixedly connected to the end of the second spring (22); the annular sealing plate (23) is slidably connected to the shaping column (36); a pushing component is provided at the bottom of the upper mold shell (1); the pushing component is used to push and adjust the annular sealing plate (23) so that the annular sealing plate (23) seals the end of the pick-up groove (20).

6. A universal mold for producing fastener sleeves according to claim 5, characterized in that: The pushing assembly comprises a through groove (24), wherein the through groove (24) is provided in the picking groove (20) so that the air inside the plurality of picking grooves (20) is connected, and an air groove (25) is symmetrically provided in the upper mold shell (1), wherein the bottom of the air groove (25) is connected to one of the picking grooves (20), and the two tops of the air groove (25) are symmetrically slidably connected with piston rods (26), and the top of the piston rod (26) is fixedly connected with an annular mounting plate (27), and the annular mounting plate (27) is sleeved on the surface of a nut (19) at a corresponding position, and the bottom array of the annular mounting plate (27) is fixedly connected with a second slide bar (28), and the second slide bar (28) is slidably connected to the inner wall of the top end of the upper mold shell (1), and the bottom end of the second slide bar (28) is fixedly connected with a third spring (29), and the bottom end of the third spring (29) is fixedly connected to the inner wall of the top end of the upper mold shell (1).

7. A universal mold for producing fastener sleeves according to claim 6, characterized in that: It also includes a limiting groove (30) and a limiting block (31), wherein the limiting block (31) is fixedly connected to the surface of the second slide bar (28), and the limiting groove (30) is opened in the upper mold shell (1) at a position corresponding to the limiting block (31).

8. The universal mold for producing fastener sleeves according to claim 1, characterized in that: The sealing block (8) comprises a connecting column (801) and a rotating sleeve (802), one end of the connecting column (801) is fixedly connected to the end of the L-shaped pushing rod (9), the other end of the connecting column (801) is symmetrically fixedly connected to a second pushing pin (803), the rotating sleeve (802) is rotatably connected to the surface of the connecting column (801), a driving groove (804) is symmetrically opened inside the rotating sleeve (802), the driving groove (804) is an oblique groove, the second pushing pin (803) is slidably connected in the driving groove (804), and a fourth spring (805) is commonly connected between the connecting column (801) and the rotating sleeve (802).

9. A universal mold for producing fastener sleeves according to claim 5, characterized in that: The side wall of the annular sealing plate (23) is rotatably connected to an annular rotating disk (32).

10. A universal mold for producing fastener sleeves according to claim 1, characterized in that: A feed pipe (33) is fixedly connected to a position of the side wall of the lower mold shell (4) corresponding to the lower mold groove (5), and an exhaust pipe (34) is fixedly connected to a position of the top of the upper mold shell (1) corresponding to the upper mold groove (2).

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