CN217495024U - Forming injection mold for back plate support of reader - Google Patents

Abstract

The utility model discloses a forming injection mold of a backboard bracket of a reader, which comprises an upper mold core, a lower mold core and a forming block, wherein the lower mold comprises a lower forming groove and a mounting groove, the forming block is movably arranged in the mounting groove, and the lower forming groove is positioned on the moving path of the forming block; the upper die core is provided with a movable limiting rod, and the forming block is provided with a movable limiting hole; one end of the movable limiting rod is fixed on the upper die core, and the other end of the movable limiting rod moves in the movable limiting hole and is in contact with the inner wall of the movable limiting hole; the movable limiting rod and the movable limiting hole are obliquely arranged, and the movable limiting rod is driven by the upper template to move in the movable limiting hole through closing the upper template and the lower template in the die; the utility model does not need to arrange a driving device for moving the forming block, and simultaneously saves the link of controlling the time point when the forming block enters the mold core; make the utility model discloses holistic operation is simpler, also makes the utility model discloses a use cost is lower.

Description

Forming injection mold for back plate support of reader

Technical Field

The utility model relates to an injection mold's manufacturing and designing field, more specifically says, it relates to a shaping injection mold who reads the backplate support of ware.

Background

An injection mold is a tool for producing plastic products; also a tool for endowing the plastic product with complete structure and accurate dimension; injection molding is a processing method used for mass production of parts with complex shapes; generally, in an injection mold, plastic melted by heating is injected into a mold cavity at high pressure by an injection molding machine, and a molded product is obtained after cooling and solidification; but when aiming at some products needing to be provided with holes, the holes cannot be formed only by cooling and solidification; forming holes through subsequent processing steps; therefore, the processing steps are increased, the processing efficiency is reduced, and the production cost is improved; in order to solve the above problems, a driving device such as an air cylinder or a motor is usually disposed on the mold; the forming structure corresponding to the hole is sent into the mold to form the hole in the injection molding process by the driving device; but the additional arrangement of the driving device can make the practical cost of the device higher; meanwhile, the driving equipment is controlled to send the forming structure of the corresponding hole into the die; if manual control is adopted, if the time for feeding and taking out the forming structure is too early or too late, the product quality is not high easily, and if a control system is specially arranged for the forming structure, the use cost of the equipment is higher; there is therefore a need for an injection mould that is efficient and less costly to produce.

Disclosure of Invention

The utility model overcomes prior art's is not enough, provides a simple structure, reasonable in design, production high efficiency, lower shaping injection mold of the backplate support of reading the ware.

In order to solve the technical problem, the technical scheme of the utility model as follows:

a molding injection mold for a back plate bracket of a reader is provided, wherein the back plate bracket is provided with an assembling hole for assembling and controlling the back plate bracket to unfold and fold; the molding injection mold comprises an upper mold core, a lower mold core and a molding block, wherein the lower mold core comprises a lower molding groove and a mounting groove, the molding block is movably arranged in the mounting groove, and the lower molding groove is positioned on a moving path of the molding block; the upper die core is provided with a movable limiting rod, and the forming block is provided with a movable limiting hole; one end of the movable limiting rod is fixed on the upper die core; the other end of the movable limiting rod moves in the movable limiting hole and is in contact with the inner wall of the movable limiting hole; the movable limiting rod and the movable limiting hole are obliquely arranged.

Furthermore, one end of the forming block, which is far away from the lower forming groove, is provided with a first inclined plane; a matching space corresponding to the mounting groove is arranged on the upper template, and a second inclined plane corresponding to the first inclined plane is arranged in the matching space; one end of the forming block close to the lower forming groove is provided with a forming rod; the diameter of the molding rod corresponds to the inner diameter of the assembly hole.

Further, a lower forming groove is formed in the upper surface of the lower mold core, an upper forming groove is formed in the lower surface of the upper mold core, the lower forming groove and the upper forming groove correspond to each other, and the upper forming groove and the lower forming groove are overlapped and communicated when the upper mold core and the lower mold core are closed; a lower injection molding groove is formed in the upper surface of the lower mold core, and an upper injection molding groove is formed in the lower surface of the upper mold core; the lower injection molding groove is communicated with the lower molding groove, the upper injection molding groove is communicated with the upper molding groove, the lower injection molding groove and the upper injection molding groove are correspondingly arranged, and the lower injection molding groove and the upper injection molding groove are superposed and communicated when the upper mold core and the lower mold core are closed; the upper mold core is also provided with an injection molding hole which is communicated with the upper injection molding groove.

Further, the molding injection mold comprises an upper template and a lower template, wherein an upper assembling space is arranged in the upper template, a lower assembling space is arranged in the lower template, an upper mold core is arranged in the upper assembling space, a lower mold core is arranged in the lower assembling space, and the upper mold core is contacted with the upper mold core when the upper template is contacted with the lower template; the upper die plate is provided with injection molding holes, and the injection molding holes of the upper die plate are communicated with the injection molding holes of the upper die core.

Further, cooling channels are arranged in the upper die plate, the lower die plate, the upper die core and the lower die core, and cooling pipes are arranged in the cooling channels; the cooling channel of the upper template is communicated with the cooling channel of the upper mold core, and the cooling channel of the lower template is communicated with the cooling channel of the lower mold core; the cooling pipes comprise an upper cooling pipe and a lower cooling pipe, the upper cooling pipe is arranged in the cooling channel of the upper template and the cooling channel of the upper mold core, and the lower cooling pipe is arranged in the cooling channel of the lower template and the cooling channel of the lower mold core; the openings of the cooling channel of the upper template and the cooling channel of the upper mold core are arranged on the outer surface of the upper template, and the openings of the cooling channel of the lower template and the cooling channel of the lower mold core are arranged on the outer surface of the lower template.

The injection molding pipeline is laid along the injection molding hole, the upper injection molding groove and the lower injection molding groove, and the injection molding pipeline is communicated with the lower injection molding groove.

Furthermore, a hand holding space convenient to grasp is arranged on the back plate support, and an upper shaping block corresponding to the hand holding space is arranged in the upper shaping groove.

Further, a hollow part is arranged on the lower surface of the back plate bracket; a lower shaping block which is correspondingly hollowed out is arranged in the lower shaping groove.

Further, the molding injection mold comprises a lower mold base, and a lower template is arranged above the lower mold base; a first guide rod is arranged on the lower die base, one end of the first guide rod is fixed on the lower die base, and the other end of the first guide rod penetrates through the lower die plate; a guide sleeve which moves along the first guide rod is arranged at one end of the first guide rod, which penetrates through the lower template, and the guide sleeve is connected with the upper template; the lower die base is provided with a first positioning rod, one end of the first positioning rod is fixed on the lower die base, the other end of the first positioning rod is exposed out of the upper surface of the lower die base, the lower surface of the lower die plate is provided with a first positioning hole, and when the lower die plate is contacted with the lower die base, one end of the first positioning rod, which is exposed out of the upper surface of the lower die base, enters the first positioning hole; the lower die base is also provided with a second guide rod, one end of the second guide rod is fixed on the lower die base, the other end of the second guide rod penetrates through the lower die plate, the second guide rod is sleeved with a compression spring, and two ends of the compression spring are respectively in contact with the lower surface of the lower die plate and the upper surface of the lower die base.

The injection molding die comprises an upper die base, an upper die plate, a lower die plate, a feeding through hole and a feeding through hole, wherein the feeding through hole corresponds to the injection molding hole; the upper die base is provided with a second positioning rod, one end of the second positioning rod is fixed to the upper die base, the other end of the second positioning rod is exposed out of the lower surface of the upper die base, a second positioning hole is formed in the upper surface of the upper die plate, and when the upper die plate is in contact with the upper die base, the end, exposed out of the lower surface of the upper die base, of the second positioning rod enters the second positioning hole.

The utility model has the advantages that:

in the utility model, the movable limiting rod can move in the movable limiting hole under the driving of the upper template through the closing of the upper template and the lower template in the mould; meanwhile, a movable limiting rod and a movable limiting hole are obliquely arranged, and the acting direction of the acting force in the vertical direction is changed when the upper template and the lower template are closed; the utility model does not need to arrange a driving device for moving the forming block, and simultaneously saves the link of controlling the time point when the forming block enters the mold core; make the utility model discloses holistic operation is simpler, also makes the utility model discloses a use cost is lower.

In the utility model, the force in the vertical direction is converted into the force in the horizontal direction when the upper template is pressed down through the matching of the first inclined plane and the second inclined plane and the matching of the movable limiting rod and the movable limiting hole; enabling the forming rod to enter the lower forming groove to form an assembling hole; meanwhile, due to the arrangement of the matching space, when the upper template and the lower template are closed, the upper template and the lower template are not closed tightly due to the forming block; make the utility model discloses overall structure intensity is higher.

In the utility model, when the upper mold core and the lower mold core are closed, the upper forming groove and the lower forming groove are superposed and communicated, so that the whole product formed by the utility model is more integrated, and the structural strength is higher; go up the groove of moulding plastics and last shaping groove communicates with each other, and the groove of moulding plastics communicates with each other with lower shaping groove down for the material can be more even get into go up shaping groove and lower shaping groove, make the utility model discloses a product overall structure intensity is higher.

In the utility model, the injection molding pipeline is arranged, so that the injection molding pipeline can be quickly replaced when a problem occurs; the problem that the later cleaning is time-consuming and labor-consuming due to blockage caused by material residues in the injection molding holes, the upper injection molding groove and the lower injection molding groove can be avoided; or avoid the loose fit between the templates and the mold cores.

In the utility model, cooling channels are arranged in the upper template, the lower template, the upper mold core and the lower mold core, thereby enhancing the heat dissipation capability of the utility model; compare in only carrying out radiating mode to last mold core and lower mold core the utility model discloses in all can dispel the heat with the cope match-plate pattern and the lower bolster of last mold core and lower mold core contact, and then at the promotion of at utmost the utility model discloses a heat-sinking capability.

In the utility model, the arrangement of the first guide rod and the second guide rod further limits the moving range of the upper template and the lower template, and further limits the moving range of the upper mold core and the lower mold core through the upper template and the lower template, so that the whole matching of the utility model is more compact; the compression spring can relieve the acting force applied when the utility model works, so that the utility model has smaller wear; the arrangement of the first positioning rod enables the lower die holder and the lower die plate to be matched more tightly; the setting of second locating lever for the cooperation between upper die base and the cope match-plate pattern is more inseparable.

Drawings

Fig. 1 is a top view of a back plate holder.

Fig. 2 is a bottom view of the back plate holder.

Fig. 3 is an overall structure diagram of the present invention.

Fig. 4 is a structural view of the upper die base.

Fig. 5 is a structural view of the upper die plate in cooperation with the upper die core.

Fig. 6 is a top surface structure view of the upper die plate.

Fig. 7 is a bottom surface structure view of the upper die plate.

Fig. 8 is a lower surface structure view of the upper core.

FIG. 9 is a block diagram of an injection molded pipe.

FIG. 10 is a diagram showing the structure of the lower mold plate, the lower mold base, the lower mold core and the molding block.

Fig. 11 is a top view of the lower plate.

Fig. 12 is a mold block pattern.

Fig. 13 is a view showing the upper surface structure of the lower core.

FIG. 14 is a view showing the structure of the mounting groove.

FIG. 15 is a view showing the lower surface of the lower plate

FIG. 16 is a view showing the structure of the lower die base.

Reference numbers in the figures:

1. a back plate holder; 2. an upper mold core; 3. a lower mold core; 4. forming a block; 5. mounting a template; 6. a lower template; 7. a cooling tube; 8. injection molding a pipeline; 9. a lower die holder; 10. an upper die holder; 11. an assembly hole; 12. a hand holding space; 13. hollowing out; 21. a movable limiting rod; 22. a fitting space; 23. a second inclined surface; 24. an upper molding groove; 25. an upper injection molding groove; 26. injection molding holes; 27. a heat sink; 28. an upper shaping block; 31. a lower forming groove; 32. mounting grooves; 33. a lower injection molding groove; 34. a first region; 35. a second region; 36. assembling the block; 37. a lower shaping block; 41. a movable limiting hole; 42. a first inclined plane; 43. forming a rod; 44. an assembling portion; 51. an upper assembly space; 52. a second positioning hole; 61. a lower assembly space; 62. a first positioning hole; 71. a cooling channel; 72. an upper cooling pipe; 73. a lower cooling tube; 91. a first guide bar; 92. a guide sleeve; 93. a first positioning rod; 94. a second guide bar; 95. a compression spring; 101. a feed through hole; 102. and a second positioning rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific illustrations of the present invention, and the purpose of the present invention is to make the technical solutions of the present invention better understood by those skilled in the art, and should not be considered as limitations of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1-16, an injection mold for forming a back plate bracket 1 of a reader, the back plate bracket 1 is provided with an assembly hole 11 for assembling and controlling the back plate bracket 1 to unfold and fold; the forming injection mold comprises an upper mold core 2, a lower mold core 3 and a forming block 4, wherein the lower mold core 3 comprises a lower forming groove 31 and a mounting groove 32, the forming block 4 is movably arranged in the mounting groove 32, and the lower forming groove 31 is positioned on a moving path of the forming block 4; the upper mold core 2 is provided with a movable limiting rod 21, and the forming block 4 is provided with a movable limiting hole 41; one end of the movable limiting rod 21 is fixed on the upper die core 2; the other end of the movable limiting rod 21 moves in the movable limiting hole 41 and is in contact with the inner wall of the movable limiting hole 41; the movable limiting rod 21 and the movable limiting hole 41 are obliquely arranged; in the utility model, the movable limiting rod 21 is driven by the upper template 5 to move in the movable limiting hole 41 by closing the upper template 5 and the lower template 6 in the mould; meanwhile, the movable limiting rod 21 and the movable limiting hole 41 are obliquely arranged, so that the acting direction of the acting force in the vertical direction is changed when the upper template 5 and the lower template 6 are closed; the utility model does not need to arrange a driving device for moving the forming block 4, and simultaneously saves the link of controlling the time point when the forming block 4 enters the mold core; make the utility model discloses holistic operation is simpler, also makes the utility model discloses a use cost is lower.

In this embodiment, the movable limiting rod 21 and the movable limiting hole 41 are both cylindrical, so that a larger contact surface is formed between the movable limiting rod 21 and the movable limiting hole 41, the forming block 4 and the upper template 5 can move synchronously, the time for the forming rod 43 of the forming block 4 to enter and exit the mold core can be accurately controlled, and the arrangement of a driving device is also avoided; the product quality is improved while the cost is reduced.

One end of the forming block 4, which is far away from the lower forming groove 31, is provided with a first inclined surface 42; the upper template 5 is provided with a matching space 22 corresponding to the mounting groove 32, and a second inclined surface 23 corresponding to the first inclined surface 42 is arranged in the matching space 22; a forming rod 43 is arranged at one end of the forming block 4 close to the lower forming groove 31; the diameter of the forming rod 43 corresponds to the inner diameter of the assembling hole 11; the force in the vertical direction is converted into the force in the horizontal direction when the upper template 5 is pressed down through the matching of the first inclined surface 42 and the second inclined surface 23 and the matching of the movable limiting rod 21 and the movable limiting hole 41; enabling the molding rod 43 to enter the lower molding groove 31 to form the fitting hole 11; meanwhile, the arrangement of the matching space 22 ensures that when the upper template 5 and the lower template 6 are closed, the upper template 5 and the lower template 6 are not closed too tightly due to the forming block 4; make the utility model discloses overall structure intensity is higher.

In the present embodiment, the mounting groove 32 includes a first region 34 and a second region 35, wherein the depth of the first region 34 is greater than the depth of the second region 35, and the second region 35 is disposed at both sides of the first region 34; the forming block 4 comprises a fitting portion 44, the fitting portion 44 being disposed in the first region 34; a fitting block 36 is provided on the second region 35, the fitting block 36 being in contact with both the fitting portion 44 and the second region 35; the movable limiting rod 21 and the first inclined surface 42 are exposed out of the space between the assembling blocks 36

The lower forming groove 31 is arranged on the upper surface of the lower mold core 3, the upper forming groove 24 is arranged on the lower surface of the upper mold core 2, the lower forming groove 31 and the upper forming groove 24 correspond to each other, and the upper forming groove 24 and the lower forming groove 31 are superposed and communicated when the upper mold core 2 and the lower mold core 3 are closed, so that the whole product formed by the utility model is more integrated, and the structural strength is higher; a lower injection molding groove 33 is formed in the upper surface of the lower mold core 3, and an upper injection molding groove 25 is formed in the lower surface of the upper mold core 2; the lower injection molding groove 33 is communicated with the lower molding groove 31, the upper injection molding groove 25 is communicated with the upper molding groove 24, the lower injection molding groove 33 is arranged corresponding to the upper injection molding groove 25, and when the upper mold core 2 and the lower mold core 3 are closed, the lower injection molding groove 33 is superposed and communicated with the upper injection molding groove 25, so that materials can more uniformly enter the upper molding groove 24 and the lower molding groove 31, and the integral structure strength of the product is higher; the upper mold core 2 is also provided with an injection molding hole 26, and the injection molding hole 26 is communicated with the upper injection molding groove 25.

The lower surface of the upper mold core 2 is provided with a heat dissipation groove 27 arranged around the upper molding groove 24, so that the upper mold core 2 and the lower mold core 3 can be conveniently dissipated.

The forming injection mold comprises an upper template 5 and a lower template 6, an upper assembling space 51 is arranged in the upper template 5, a lower assembling space 61 is arranged in the lower template 6, an upper mold core 2 is arranged in the upper assembling space 51, a lower mold core 3 is arranged in the lower assembling space 61, and the upper mold core 2 is contacted with the upper mold core 2 when the upper template 5 is contacted with the lower template 6, so that the integral assembling strength of the utility model is higher; the upper mold plate 5 is provided with injection holes 26, and the injection holes 26 of the upper mold plate 5 communicate with the injection holes 26 of the upper core 2.

Cooling channels 71 are arranged in the upper template 5, the lower template 6, the upper mold core 2 and the lower mold core 3, and cooling pipes 7 are arranged in the cooling channels 71, so that the heat dissipation capacity of the utility model is enhanced; the cooling channel 71 of the upper template 5 is communicated with the cooling channel 71 of the upper mold core 2, and the cooling channel 71 of the lower template 6 is communicated with the cooling channel 71 of the lower mold core 3; the cooling pipe 7 comprises an upper cooling pipe 72 and a lower cooling pipe 73, the upper cooling pipe 72 is arranged in the cooling channel 71 of the upper template 5 and the cooling channel 71 of the upper mold core 2, and the lower cooling pipe 73 is arranged in the cooling channel 71 of the lower template 6 and the cooling channel 71 of the lower mold core 3; openings of the cooling channel 71 of the upper die plate 5 and the cooling channel 71 of the upper die core 2 are arranged on the outer surface of the upper die plate 5, and openings of the cooling channel 71 of the lower die plate 6 and the cooling channel 71 of the lower die core 3 are arranged on the outer surface of the lower die plate 6; compare in only carrying out radiating mode to last mould core 2 and lower mould core 3 the utility model discloses in and the cope match-plate pattern 5 and the lower bolster 6 of last mould core 2 and the contact of lower mould core 3 all can dispel the heat, and then promote at maximum the utility model discloses a heat dissipation can.

The utility model also comprises an injection molding pipeline 8, wherein the injection molding pipeline 8 is laid along the injection molding hole 26, the upper injection molding groove 25 and the lower injection molding groove 33, and the injection molding pipeline 8 is communicated with the lower injection molding groove 33; the injection molding pipeline 8 is arranged, so that the injection molding pipeline can be quickly replaced when problems occur; the problem that the later cleaning is time-consuming and labor-consuming due to blockage caused by material residues in the injection molding holes 26, the upper injection molding grooves 25 and the lower injection molding grooves 33 can be avoided; or avoid the loose fit between the templates and the mold cores.

In the utility model, a hand holding space 12 convenient for grasping is arranged on the back plate bracket 1, and an upper shaping block 28 corresponding to the hand holding space 12 is arranged in the upper shaping groove 24; the lower surface of the back plate bracket 1 is provided with a hollow part 13; a lower shaping block 37 corresponding to the hollow 13 is arranged in the lower shaping groove 31.

In the utility model, the molding injection mold comprises a lower mold base 9, and a lower template 6 is arranged above the lower mold base 9; a first guide rod 91 is arranged on the lower die holder 9, one end of the first guide rod 91 is fixed on the lower die holder 9, and the other end of the first guide rod 91 penetrates through the lower die plate 6; a guide sleeve 92 which moves along the first guide rod 91 is arranged at one end of the first guide rod 91 which penetrates through the lower template 6, and the guide sleeve 92 is connected with the upper template 5; a first positioning rod 93 is arranged on the lower die holder 9, one end of the first positioning rod 93 is fixed on the lower die holder 9, the other end of the first positioning rod 93 is exposed out of the upper surface of the lower die holder 9, a first positioning hole 62 is arranged on the lower surface of the lower die plate 6, and when the lower die plate 6 is in contact with the lower die holder 9, the end of the first positioning rod 93 exposed out of the upper surface of the lower die holder 9 enters the first positioning hole 62; a second guide rod 94 is further arranged on the lower die holder 9, one end of the second guide rod 94 is fixed on the lower die holder 9, the other end of the second guide rod 94 penetrates through the lower die plate 6, a compression spring 95 is sleeved on the second guide rod 94, and two ends of the compression spring 95 are respectively in contact with the lower surface of the lower die plate 6 and the upper surface of the lower die holder 9; the arrangement of the first guide rod 91 and the second guide rod 94 further limits the moving range of the upper template 5 and the lower template 6, and further limits the moving range of the upper mold core 2 and the lower mold core 3 through the upper template 5 and the lower template 6, so that the integral matching of the utility model is more compact; the compression spring 95 can relieve the acting force applied when the utility model works, so that the utility model has smaller wear; the first positioning rod 93 is arranged to enable the lower die holder 9 to be matched with the lower die plate 6 more tightly.

The utility model discloses a forming injection mold, which comprises an upper mold base 10, wherein the upper mold base 10 is arranged above an upper template 5, and a feed through hole 101 corresponding to an injection molding hole 26 is arranged in the upper mold base 10 and the upper template 5; a second positioning rod 102 is arranged on the upper die holder 10, one end of the second positioning rod 102 is fixed on the upper die holder 10, the other end of the second positioning rod 102 is exposed from the lower surface of the upper die holder 10, a second positioning hole 52 is arranged on the upper surface of the upper die plate 5, and when the upper die plate 5 is in contact with the upper die holder 10, the end of the second positioning rod 102 exposed from the lower surface of the upper die holder 10 enters the second positioning hole 52; the second positioning rod 102 is arranged, so that the upper die holder 10 and the upper die plate 5 are matched more closely.

Generally, the feed through hole 82 is provided with a cover plate for shielding the feed through hole, so that foreign matters are prevented from entering the feed through hole 82, and impurities are prevented from being mixed in the product.

It should be noted that other technical solutions of the present invention all belong to the prior art, and therefore are not described in detail.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A molding injection mold for a back plate bracket of a reader is provided, wherein the back plate bracket is provided with an assembling hole for assembling and controlling the back plate bracket to unfold and fold; the injection molding die is characterized by comprising an upper die core, a lower die core and a molding block, wherein the lower die core comprises a lower molding groove and a mounting groove, the molding block is movably arranged in the mounting groove, and the lower molding groove is positioned on a movable path of the molding block; the upper die core is provided with a movable limiting rod, and the forming block is provided with a movable limiting hole; one end of the movable limiting rod is fixed on the upper die core; the other end of the movable limiting rod moves in the movable limiting hole and is in contact with the inner wall of the movable limiting hole; the movable limiting rod and the movable limiting hole are obliquely arranged.

2. The injection mold for molding the back plate bracket of the reader according to claim 1, wherein one end of the molding block, which is far away from the lower molding groove, is provided with a first inclined surface; a matching space corresponding to the mounting groove is arranged on the upper template, and a second inclined plane corresponding to the first inclined plane is arranged in the matching space; one end of the forming block close to the lower forming groove is provided with a forming rod; the diameter of the molding rod corresponds to the inner diameter of the assembly hole.

3. The injection mold for molding the back plate bracket of the reader as claimed in claim 2, wherein the lower molding groove is formed in an upper surface of the lower mold core, the lower surface of the upper mold core is provided with the upper molding groove, the lower molding groove and the upper molding groove correspond to each other, and the upper molding groove and the lower molding groove are overlapped and communicated when the upper mold core and the lower mold core are closed; a lower injection molding groove is formed in the upper surface of the lower mold core, and an upper injection molding groove is formed in the lower surface of the upper mold core; the lower injection molding groove is communicated with the lower molding groove, the upper injection molding groove is communicated with the upper molding groove, the lower injection molding groove and the upper injection molding groove are correspondingly arranged, and the lower injection molding groove and the upper injection molding groove are superposed and communicated when the upper mold core and the lower mold core are closed; the upper mold core is also provided with an injection molding hole which is communicated with the upper injection molding groove.

4. The forming injection mold of the back plate bracket of the reader according to claim 3, characterized in that the forming injection mold comprises an upper mold plate and a lower mold plate, wherein an upper assembling space is arranged in the upper mold plate, a lower assembling space is arranged in the lower mold plate, the upper mold core is arranged in the upper assembling space, the lower mold core is arranged in the lower assembling space, and the upper mold core is contacted with the lower mold core when the upper mold plate is contacted with the lower mold plate; the upper die plate is provided with injection molding holes, and the injection molding holes of the upper die plate are communicated with the injection molding holes of the upper die core.

5. The forming injection mold of the back plate bracket of the reader as claimed in claim 4, wherein the upper mold plate, the lower mold plate, the upper mold core and the lower mold core are all provided with cooling channels, and cooling pipes are arranged in the cooling channels; the cooling channel of the upper template is communicated with the cooling channel of the upper mold core, and the cooling channel of the lower template is communicated with the cooling channel of the lower mold core; the cooling pipes comprise an upper cooling pipe and a lower cooling pipe, the upper cooling pipe is arranged in the cooling channel of the upper template and the cooling channel of the upper mold core, and the lower cooling pipe is arranged in the cooling channel of the lower template and the cooling channel of the lower mold core; openings of the cooling channel of the upper template and the cooling channel of the upper mold core are arranged on the outer surface of the upper template, and openings of the cooling channel of the lower template and the cooling channel of the lower mold core are arranged on the outer surface of the lower template.

6. The injection mold for molding a back plate bracket of a reader according to claim 4, further comprising an injection pipe which is laid along the injection hole, the upper injection groove and the lower injection groove and is communicated with the lower injection groove.

7. The injection mold for molding a back plate holder of a reader as claimed in claim 4, wherein a hand-held space for easy grasping is provided on the back plate holder, and an upper molding block corresponding to the hand-held space is provided in the upper molding groove.

8. The forming injection mold for the back plate bracket of the reader according to claim 7, wherein a hollow is arranged on the lower surface of the back plate bracket; a lower shaping block which is correspondingly hollowed out is arranged in the lower shaping groove.

9. The forming injection mold of the backboard bracket of the reader according to claim 5, wherein the forming injection mold comprises a lower die holder, and the lower template is arranged above the lower die holder; a first guide rod is arranged on the lower die base, one end of the first guide rod is fixed on the lower die base, and the other end of the first guide rod penetrates through the lower die plate; a guide sleeve which moves along the first guide rod is arranged at one end of the first guide rod, which penetrates through the lower template, and the guide sleeve is connected with the upper template; the lower die base is provided with a first positioning rod, one end of the first positioning rod is fixed on the lower die base, the other end of the first positioning rod is exposed out of the upper surface of the lower die base, the lower surface of the lower die plate is provided with a first positioning hole, and when the lower die plate is contacted with the lower die base, one end of the first positioning rod, which is exposed out of the upper surface of the lower die base, enters the first positioning hole; the lower die base is also provided with a second guide rod, one end of the second guide rod is fixed on the lower die base, the other end of the second guide rod penetrates through the lower die plate, the second guide rod is sleeved with a compression spring, and two ends of the compression spring are respectively in contact with the lower surface of the lower die plate and the upper surface of the lower die base.

10. The injection mold for molding the back plate bracket of the reader according to claim 9, wherein the injection mold comprises an upper mold base disposed above the upper mold plate, and feed through holes corresponding to the injection molding holes are disposed in the upper mold base and the upper mold plate; the upper die base is provided with a second positioning rod, one end of the second positioning rod is fixed to the upper die base, the other end of the second positioning rod is exposed out of the lower surface of the upper die base, a second positioning hole is formed in the upper surface of the upper die plate, and when the upper die plate is in contact with the upper die base, the end, exposed out of the lower surface of the upper die base, of the second positioning rod enters the second positioning hole.

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